From 0a58d2ae572adaec8d046f8d35b40c2c32ac7468 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Tue, 16 Aug 2022 15:46:12 +0200 Subject: [PATCH 001/111] drm/msm: Make .remove and .shutdown HW shutdown consistent Drivers' .remove and .shutdown callbacks are executed on different code paths. The former is called when a device is removed from the bus, while the latter is called at system shutdown time to quiesce the device. This means that some overlap exists between the two, because both have to take care of properly shutting down the hardware. But currently the logic used in these two callbacks isn't consistent in msm drivers, which could lead to kernel panic. For example, on .remove the component is deleted and its .unbind callback leads to the hardware being shutdown but only if the DRM device has been marked as registered. That check doesn't exist in the .shutdown logic and this can lead to the driver calling drm_atomic_helper_shutdown() for a DRM device that hasn't been properly initialized. A situation like this can happen if drivers for expected sub-devices fail to probe, since the .bind callback will never be executed. If that is the case, drm_atomic_helper_shutdown() will attempt to take mutexes that are only initialized if drm_mode_config_init() is called during a device bind. This bug was attempted to be fixed in commit 623f279c7781 ("drm/msm: fix shutdown hook in case GPU components failed to bind"), but unfortunately it still happens in some cases as the one mentioned above, i.e: systemd-shutdown[1]: Powering off. kvm: exiting hardware virtualization platform wifi-firmware.0: Removing from iommu group 12 platform video-firmware.0: Removing from iommu group 10 ------------[ cut here ]------------ WARNING: CPU: 6 PID: 1 at drivers/gpu/drm/drm_modeset_lock.c:317 drm_modeset_lock_all_ctx+0x3c4/0x3d0 ... Hardware name: Google CoachZ (rev3+) (DT) pstate: a0400009 (NzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_modeset_lock_all_ctx+0x3c4/0x3d0 lr : drm_modeset_lock_all_ctx+0x48/0x3d0 sp : ffff80000805bb80 x29: ffff80000805bb80 x28: ffff327c00128000 x27: 0000000000000000 x26: 0000000000000000 x25: 0000000000000001 x24: ffffc95d820ec030 x23: ffff327c00bbd090 x22: ffffc95d8215eca0 x21: ffff327c039c5800 x20: ffff327c039c5988 x19: ffff80000805bbe8 x18: 0000000000000034 x17: 000000040044ffff x16: ffffc95d80cac920 x15: 0000000000000000 x14: 0000000000000315 x13: 0000000000000315 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff80000805bc28 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : ffff327c00128000 x1 : 0000000000000000 x0 : ffff327c039c59b0 Call trace: drm_modeset_lock_all_ctx+0x3c4/0x3d0 drm_atomic_helper_shutdown+0x70/0x134 msm_drv_shutdown+0x30/0x40 platform_shutdown+0x28/0x40 device_shutdown+0x148/0x350 kernel_power_off+0x38/0x80 __do_sys_reboot+0x288/0x2c0 __arm64_sys_reboot+0x28/0x34 invoke_syscall+0x48/0x114 el0_svc_common.constprop.0+0x44/0xec do_el0_svc+0x2c/0xc0 el0_svc+0x2c/0x84 el0t_64_sync_handler+0x11c/0x150 el0t_64_sync+0x18c/0x190 ---[ end trace 0000000000000000 ]--- Unable to handle kernel NULL pointer dereference at virtual address 0000000000000018 Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=000000010eab1000 [0000000000000018] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 96000004 [#1] PREEMPT SMP ... Hardware name: Google CoachZ (rev3+) (DT) pstate: a0400009 (NzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ww_mutex_lock+0x28/0x32c lr : drm_modeset_lock_all_ctx+0x1b0/0x3d0 sp : ffff80000805bb50 x29: ffff80000805bb50 x28: ffff327c00128000 x27: 0000000000000000 x26: 0000000000000000 x25: 0000000000000001 x24: 0000000000000018 x23: ffff80000805bc10 x22: ffff327c039c5ad8 x21: ffff327c039c5800 x20: ffff80000805bbe8 x19: 0000000000000018 x18: 0000000000000034 x17: 000000040044ffff x16: ffffc95d80cac920 x15: 0000000000000000 x14: 0000000000000315 x13: 0000000000000315 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff80000805bc28 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : ffff327c00128000 x1 : 0000000000000000 x0 : 0000000000000018 Call trace: ww_mutex_lock+0x28/0x32c drm_modeset_lock_all_ctx+0x1b0/0x3d0 drm_atomic_helper_shutdown+0x70/0x134 msm_drv_shutdown+0x30/0x40 platform_shutdown+0x28/0x40 device_shutdown+0x148/0x350 kernel_power_off+0x38/0x80 __do_sys_reboot+0x288/0x2c0 __arm64_sys_reboot+0x28/0x34 invoke_syscall+0x48/0x114 el0_svc_common.constprop.0+0x44/0xec do_el0_svc+0x2c/0xc0 el0_svc+0x2c/0x84 el0t_64_sync_handler+0x11c/0x150 el0t_64_sync+0x18c/0x190 Code: aa0103f4 d503201f d2800001 aa0103e3 (c8e37c02) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b Kernel Offset: 0x495d77c00000 from 0xffff800008000000 PHYS_OFFSET: 0xffffcd8500000000 CPU features: 0x800,00c2a015,19801c82 Memory Limit: none ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]--- Fixes: 9d5cbf5fe46e ("drm/msm: add shutdown support for display platform_driver") Signed-off-by: Javier Martinez Canillas Reviewed-by: Abhinav Kumar Link: https://patchwork.freedesktop.org/patch/msgid/20220816134612.916527-1-javierm@redhat.com --- drivers/gpu/drm/msm/msm_drv.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 1d0bafedd585..226d8d4629d2 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -1242,10 +1242,15 @@ void msm_drv_shutdown(struct platform_device *pdev) struct msm_drm_private *priv = platform_get_drvdata(pdev); struct drm_device *drm = priv ? priv->dev : NULL; - if (!priv || !priv->kms) - return; - - drm_atomic_helper_shutdown(drm); + /* + * Shutdown the hw if we're far enough along where things might be on. + * If we run this too early, we'll end up panicking in any variety of + * places. Since we don't register the drm device until late in + * msm_drm_init, drm_dev->registered is used as an indicator that the + * shutdown will be successful. + */ + if (drm && drm->registered) + drm_atomic_helper_shutdown(drm); } static struct platform_driver msm_platform_driver = { From 544432703b2fe73a07f387c0b883da03ffa5671e Mon Sep 17 00:00:00 2001 From: Arunpravin Paneer Selvam Date: Sat, 20 Aug 2022 00:32:59 -0700 Subject: [PATCH 002/111] drm/ttm: Add new callbacks to ttm res mgr MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We are adding two new callbacks to ttm resource manager function to handle intersection and compatibility of placement and resources. v2: move the amdgpu and ttm_range_manager changes to separate patches (Christian) v3: rename "intersect" to "intersects" (Matthew) v4: move !place check to the !res if and return false in ttm_resource_compatible() function (Christian) v5: move bits of code from patch number 6 to avoid temporary driver breakup (Christian) Signed-off-by: Christian König Signed-off-by: Arunpravin Paneer Selvam Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20220820073304.178444-1-Arunpravin.PaneerSelvam@amd.com --- drivers/gpu/drm/ttm/ttm_bo.c | 9 ++-- drivers/gpu/drm/ttm/ttm_resource.c | 77 +++++++++++++++++++++++++++++- include/drm/ttm/ttm_resource.h | 40 ++++++++++++++++ 3 files changed, 119 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index c1bd006a5525..f066e8124c50 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -518,6 +518,9 @@ out: bool ttm_bo_eviction_valuable(struct ttm_buffer_object *bo, const struct ttm_place *place) { + struct ttm_resource *res = bo->resource; + struct ttm_device *bdev = bo->bdev; + dma_resv_assert_held(bo->base.resv); if (bo->resource->mem_type == TTM_PL_SYSTEM) return true; @@ -525,11 +528,7 @@ bool ttm_bo_eviction_valuable(struct ttm_buffer_object *bo, /* Don't evict this BO if it's outside of the * requested placement range */ - if (place->fpfn >= (bo->resource->start + bo->resource->num_pages) || - (place->lpfn && place->lpfn <= bo->resource->start)) - return false; - - return true; + return ttm_resource_intersects(bdev, res, place, bo->base.size); } EXPORT_SYMBOL(ttm_bo_eviction_valuable); diff --git a/drivers/gpu/drm/ttm/ttm_resource.c b/drivers/gpu/drm/ttm/ttm_resource.c index 20f9adcc3235..0d1f862a582b 100644 --- a/drivers/gpu/drm/ttm/ttm_resource.c +++ b/drivers/gpu/drm/ttm/ttm_resource.c @@ -253,10 +253,84 @@ void ttm_resource_free(struct ttm_buffer_object *bo, struct ttm_resource **res) } EXPORT_SYMBOL(ttm_resource_free); +/** + * ttm_resource_intersects - test for intersection + * + * @bdev: TTM device structure + * @res: The resource to test + * @place: The placement to test + * @size: How many bytes the new allocation needs. + * + * Test if @res intersects with @place and @size. Used for testing if evictions + * are valueable or not. + * + * Returns true if the res placement intersects with @place and @size. + */ +bool ttm_resource_intersects(struct ttm_device *bdev, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct ttm_resource_manager *man; + + if (!res) + return false; + + if (!place) + return true; + + man = ttm_manager_type(bdev, res->mem_type); + if (!man->func->intersects) { + if (place->fpfn >= (res->start + res->num_pages) || + (place->lpfn && place->lpfn <= res->start)) + return false; + + return true; + } + + return man->func->intersects(man, res, place, size); +} + +/** + * ttm_resource_compatible - test for compatibility + * + * @bdev: TTM device structure + * @res: The resource to test + * @place: The placement to test + * @size: How many bytes the new allocation needs. + * + * Test if @res compatible with @place and @size. + * + * Returns true if the res placement compatible with @place and @size. + */ +bool ttm_resource_compatible(struct ttm_device *bdev, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct ttm_resource_manager *man; + + if (!res || !place) + return false; + + man = ttm_manager_type(bdev, res->mem_type); + if (!man->func->compatible) { + if (res->start < place->fpfn || + (place->lpfn && (res->start + res->num_pages) > place->lpfn)) + return false; + + return true; + } + + return man->func->compatible(man, res, place, size); +} + static bool ttm_resource_places_compat(struct ttm_resource *res, const struct ttm_place *places, unsigned num_placement) { + struct ttm_buffer_object *bo = res->bo; + struct ttm_device *bdev = bo->bdev; unsigned i; if (res->placement & TTM_PL_FLAG_TEMPORARY) @@ -265,8 +339,7 @@ static bool ttm_resource_places_compat(struct ttm_resource *res, for (i = 0; i < num_placement; i++) { const struct ttm_place *heap = &places[i]; - if (res->start < heap->fpfn || (heap->lpfn && - (res->start + res->num_pages) > heap->lpfn)) + if (!ttm_resource_compatible(bdev, res, heap, bo->base.size)) continue; if ((res->mem_type == heap->mem_type) && diff --git a/include/drm/ttm/ttm_resource.h b/include/drm/ttm/ttm_resource.h index ca89a48c2460..5afc6d664fde 100644 --- a/include/drm/ttm/ttm_resource.h +++ b/include/drm/ttm/ttm_resource.h @@ -88,6 +88,38 @@ struct ttm_resource_manager_func { void (*free)(struct ttm_resource_manager *man, struct ttm_resource *res); + /** + * struct ttm_resource_manager_func member intersects + * + * @man: Pointer to a memory type manager. + * @res: Pointer to a struct ttm_resource to be checked. + * @place: Placement to check against. + * @size: Size of the check. + * + * Test if @res intersects with @place + @size. Used to judge if + * evictions are valueable or not. + */ + bool (*intersects)(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size); + + /** + * struct ttm_resource_manager_func member compatible + * + * @man: Pointer to a memory type manager. + * @res: Pointer to a struct ttm_resource to be checked. + * @place: Placement to check against. + * @size: Size of the check. + * + * Test if @res compatible with @place + @size. Used to check of + * the need to move the backing store or not. + */ + bool (*compatible)(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size); + /** * struct ttm_resource_manager_func member debug * @@ -329,6 +361,14 @@ int ttm_resource_alloc(struct ttm_buffer_object *bo, const struct ttm_place *place, struct ttm_resource **res); void ttm_resource_free(struct ttm_buffer_object *bo, struct ttm_resource **res); +bool ttm_resource_intersects(struct ttm_device *bdev, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size); +bool ttm_resource_compatible(struct ttm_device *bdev, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size); bool ttm_resource_compat(struct ttm_resource *res, struct ttm_placement *placement); void ttm_resource_set_bo(struct ttm_resource *res, From 75ba3121acd58b71ee1d2f6e30ab44748d4397de Mon Sep 17 00:00:00 2001 From: Arunpravin Paneer Selvam Date: Sat, 20 Aug 2022 00:33:00 -0700 Subject: [PATCH 003/111] drm/ttm: Implement intersect/compatible functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implemented a new intersect and compatible callback functions to ttm range manager fetching start offset from drm mm range allocator. Signed-off-by: Christian König Signed-off-by: Arunpravin Paneer Selvam Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20220820073304.178444-2-Arunpravin.PaneerSelvam@amd.com --- drivers/gpu/drm/ttm/ttm_range_manager.c | 33 +++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/gpu/drm/ttm/ttm_range_manager.c b/drivers/gpu/drm/ttm/ttm_range_manager.c index d91666721dc6..4cfef2b3514d 100644 --- a/drivers/gpu/drm/ttm/ttm_range_manager.c +++ b/drivers/gpu/drm/ttm/ttm_range_manager.c @@ -113,6 +113,37 @@ static void ttm_range_man_free(struct ttm_resource_manager *man, kfree(node); } +static bool ttm_range_man_intersects(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct drm_mm_node *node = &to_ttm_range_mgr_node(res)->mm_nodes[0]; + u32 num_pages = PFN_UP(size); + + /* Don't evict BOs outside of the requested placement range */ + if (place->fpfn >= (node->start + num_pages) || + (place->lpfn && place->lpfn <= node->start)) + return false; + + return true; +} + +static bool ttm_range_man_compatible(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct drm_mm_node *node = &to_ttm_range_mgr_node(res)->mm_nodes[0]; + u32 num_pages = PFN_UP(size); + + if (node->start < place->fpfn || + (place->lpfn && (node->start + num_pages) > place->lpfn)) + return false; + + return true; +} + static void ttm_range_man_debug(struct ttm_resource_manager *man, struct drm_printer *printer) { @@ -126,6 +157,8 @@ static void ttm_range_man_debug(struct ttm_resource_manager *man, static const struct ttm_resource_manager_func ttm_range_manager_func = { .alloc = ttm_range_man_alloc, .free = ttm_range_man_free, + .intersects = ttm_range_man_intersects, + .compatible = ttm_range_man_compatible, .debug = ttm_range_man_debug }; From ded910f368a52b64a3c0eb12da085058b55f61a1 Mon Sep 17 00:00:00 2001 From: Arunpravin Paneer Selvam Date: Sat, 20 Aug 2022 00:33:01 -0700 Subject: [PATCH 004/111] drm/amdgpu: Implement intersect/compatible functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implemented a new intersect and compatible callback function fetching start offset from backend drm buddy allocator. Signed-off-by: Christian König Signed-off-by: Arunpravin Paneer Selvam Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20220820073304.178444-3-Arunpravin.PaneerSelvam@amd.com --- drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c | 38 +++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 68 ++++++++++++++++++++ 2 files changed, 106 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c index 8c6b2284cf56..1f3302aebeff 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c @@ -204,6 +204,42 @@ void amdgpu_gtt_mgr_recover(struct amdgpu_gtt_mgr *mgr) amdgpu_gart_invalidate_tlb(adev); } +/** + * amdgpu_gtt_mgr_intersects - test for intersection + * + * @man: Our manager object + * @res: The resource to test + * @place: The place for the new allocation + * @size: The size of the new allocation + * + * Simplified intersection test, only interesting if we need GART or not. + */ +static bool amdgpu_gtt_mgr_intersects(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + return !place->lpfn || amdgpu_gtt_mgr_has_gart_addr(res); +} + +/** + * amdgpu_gtt_mgr_compatible - test for compatibility + * + * @man: Our manager object + * @res: The resource to test + * @place: The place for the new allocation + * @size: The size of the new allocation + * + * Simplified compatibility test. + */ +static bool amdgpu_gtt_mgr_compatible(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + return !place->lpfn || amdgpu_gtt_mgr_has_gart_addr(res); +} + /** * amdgpu_gtt_mgr_debug - dump VRAM table * @@ -225,6 +261,8 @@ static void amdgpu_gtt_mgr_debug(struct ttm_resource_manager *man, static const struct ttm_resource_manager_func amdgpu_gtt_mgr_func = { .alloc = amdgpu_gtt_mgr_new, .free = amdgpu_gtt_mgr_del, + .intersects = amdgpu_gtt_mgr_intersects, + .compatible = amdgpu_gtt_mgr_compatible, .debug = amdgpu_gtt_mgr_debug }; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c index 28ec5f8ac1c1..d1a2619fa89f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c @@ -720,6 +720,72 @@ uint64_t amdgpu_vram_mgr_vis_usage(struct amdgpu_vram_mgr *mgr) return atomic64_read(&mgr->vis_usage); } +/** + * amdgpu_vram_mgr_intersects - test each drm buddy block for intersection + * + * @man: TTM memory type manager + * @res: The resource to test + * @place: The place to test against + * @size: Size of the new allocation + * + * Test each drm buddy block for intersection for eviction decision. + */ +static bool amdgpu_vram_mgr_intersects(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct amdgpu_vram_mgr_resource *mgr = to_amdgpu_vram_mgr_resource(res); + struct drm_buddy_block *block; + + /* Check each drm buddy block individually */ + list_for_each_entry(block, &mgr->blocks, link) { + unsigned long fpfn = + amdgpu_vram_mgr_block_start(block) >> PAGE_SHIFT; + unsigned long lpfn = fpfn + + (amdgpu_vram_mgr_block_size(block) >> PAGE_SHIFT); + + if (place->fpfn < lpfn && + (place->lpfn && place->lpfn > fpfn)) + return true; + } + + return false; +} + +/** + * amdgpu_vram_mgr_compatible - test each drm buddy block for compatibility + * + * @man: TTM memory type manager + * @res: The resource to test + * @place: The place to test against + * @size: Size of the new allocation + * + * Test each drm buddy block for placement compatibility. + */ +static bool amdgpu_vram_mgr_compatible(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct amdgpu_vram_mgr_resource *mgr = to_amdgpu_vram_mgr_resource(res); + struct drm_buddy_block *block; + + /* Check each drm buddy block individually */ + list_for_each_entry(block, &mgr->blocks, link) { + unsigned long fpfn = + amdgpu_vram_mgr_block_start(block) >> PAGE_SHIFT; + unsigned long lpfn = fpfn + + (amdgpu_vram_mgr_block_size(block) >> PAGE_SHIFT); + + if (fpfn < place->fpfn || + (place->lpfn && lpfn > place->lpfn)) + return false; + } + + return true; +} + /** * amdgpu_vram_mgr_debug - dump VRAM table * @@ -753,6 +819,8 @@ static void amdgpu_vram_mgr_debug(struct ttm_resource_manager *man, static const struct ttm_resource_manager_func amdgpu_vram_mgr_func = { .alloc = amdgpu_vram_mgr_new, .free = amdgpu_vram_mgr_del, + .intersects = amdgpu_vram_mgr_intersects, + .compatible = amdgpu_vram_mgr_compatible, .debug = amdgpu_vram_mgr_debug }; From 92b2b55e68c8cb88588073434ff3e3240e98504c Mon Sep 17 00:00:00 2001 From: Arunpravin Paneer Selvam Date: Sat, 20 Aug 2022 00:33:02 -0700 Subject: [PATCH 005/111] drm/i915: Implement intersect/compatible functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implemented a new intersect and compatible callback function fetching start offset from drm buddy allocator. v3: move the bits that are specific to buddy_man (Matthew) v4: consider the block size /range (Matthew) Signed-off-by: Christian König Signed-off-by: Arunpravin Paneer Selvam Reviewed-by: Matthew Auld Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20220820073304.178444-4-Arunpravin.PaneerSelvam@amd.com --- drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 41 +---------- drivers/gpu/drm/i915/i915_ttm_buddy_manager.c | 73 +++++++++++++++++++ 2 files changed, 74 insertions(+), 40 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c index 5a5cf332d8a5..bc9c432edffe 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c @@ -361,7 +361,6 @@ static bool i915_ttm_eviction_valuable(struct ttm_buffer_object *bo, const struct ttm_place *place) { struct drm_i915_gem_object *obj = i915_ttm_to_gem(bo); - struct ttm_resource *res = bo->resource; if (!obj) return false; @@ -378,45 +377,7 @@ static bool i915_ttm_eviction_valuable(struct ttm_buffer_object *bo, if (!i915_gem_object_evictable(obj)) return false; - switch (res->mem_type) { - case I915_PL_LMEM0: { - struct ttm_resource_manager *man = - ttm_manager_type(bo->bdev, res->mem_type); - struct i915_ttm_buddy_resource *bman_res = - to_ttm_buddy_resource(res); - struct drm_buddy *mm = bman_res->mm; - struct drm_buddy_block *block; - - if (!place->fpfn && !place->lpfn) - return true; - - GEM_BUG_ON(!place->lpfn); - - /* - * If we just want something mappable then we can quickly check - * if the current victim resource is using any of the CPU - * visible portion. - */ - if (!place->fpfn && - place->lpfn == i915_ttm_buddy_man_visible_size(man)) - return bman_res->used_visible_size > 0; - - /* Real range allocation */ - list_for_each_entry(block, &bman_res->blocks, link) { - unsigned long fpfn = - drm_buddy_block_offset(block) >> PAGE_SHIFT; - unsigned long lpfn = fpfn + - (drm_buddy_block_size(mm, block) >> PAGE_SHIFT); - - if (place->fpfn < lpfn && place->lpfn > fpfn) - return true; - } - return false; - } default: - break; - } - - return true; + return ttm_bo_eviction_valuable(bo, place); } static void i915_ttm_evict_flags(struct ttm_buffer_object *bo, diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c index 427de1aaab36..e19452f0e100 100644 --- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c +++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c @@ -173,6 +173,77 @@ static void i915_ttm_buddy_man_free(struct ttm_resource_manager *man, kfree(bman_res); } +static bool i915_ttm_buddy_man_intersects(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res); + struct i915_ttm_buddy_manager *bman = to_buddy_manager(man); + struct drm_buddy *mm = &bman->mm; + struct drm_buddy_block *block; + + if (!place->fpfn && !place->lpfn) + return true; + + GEM_BUG_ON(!place->lpfn); + + /* + * If we just want something mappable then we can quickly check + * if the current victim resource is using any of the CPU + * visible portion. + */ + if (!place->fpfn && + place->lpfn == i915_ttm_buddy_man_visible_size(man)) + return bman_res->used_visible_size > 0; + + /* Check each drm buddy block individually */ + list_for_each_entry(block, &bman_res->blocks, link) { + unsigned long fpfn = + drm_buddy_block_offset(block) >> PAGE_SHIFT; + unsigned long lpfn = fpfn + + (drm_buddy_block_size(mm, block) >> PAGE_SHIFT); + + if (place->fpfn < lpfn && place->lpfn > fpfn) + return true; + } + + return false; +} + +static bool i915_ttm_buddy_man_compatible(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res); + struct i915_ttm_buddy_manager *bman = to_buddy_manager(man); + struct drm_buddy *mm = &bman->mm; + struct drm_buddy_block *block; + + if (!place->fpfn && !place->lpfn) + return true; + + GEM_BUG_ON(!place->lpfn); + + if (!place->fpfn && + place->lpfn == i915_ttm_buddy_man_visible_size(man)) + return bman_res->used_visible_size == res->num_pages; + + /* Check each drm buddy block individually */ + list_for_each_entry(block, &bman_res->blocks, link) { + unsigned long fpfn = + drm_buddy_block_offset(block) >> PAGE_SHIFT; + unsigned long lpfn = fpfn + + (drm_buddy_block_size(mm, block) >> PAGE_SHIFT); + + if (fpfn < place->fpfn || lpfn > place->lpfn) + return false; + } + + return true; +} + static void i915_ttm_buddy_man_debug(struct ttm_resource_manager *man, struct drm_printer *printer) { @@ -200,6 +271,8 @@ static void i915_ttm_buddy_man_debug(struct ttm_resource_manager *man, static const struct ttm_resource_manager_func i915_ttm_buddy_manager_func = { .alloc = i915_ttm_buddy_man_alloc, .free = i915_ttm_buddy_man_free, + .intersects = i915_ttm_buddy_man_intersects, + .compatible = i915_ttm_buddy_man_compatible, .debug = i915_ttm_buddy_man_debug, }; From 73b984d8722e3ee077a8591b27d8c4d1a2d72020 Mon Sep 17 00:00:00 2001 From: Arunpravin Paneer Selvam Date: Sat, 20 Aug 2022 00:33:03 -0700 Subject: [PATCH 006/111] drm/nouveau: Implement intersect/compatible functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implemented a new intersect and compatible callback function fetching the start offset from struct ttm_resource. Signed-off-by: Christian König Signed-off-by: Arunpravin Paneer Selvam Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20220820073304.178444-5-Arunpravin.PaneerSelvam@amd.com --- drivers/gpu/drm/nouveau/nouveau_mem.c | 29 +++++++++++++++++++++++++++ drivers/gpu/drm/nouveau/nouveau_mem.h | 6 ++++++ drivers/gpu/drm/nouveau/nouveau_ttm.c | 24 ++++++++++++++++++++++ 3 files changed, 59 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c index 2e517cdc24c9..76f8edefa637 100644 --- a/drivers/gpu/drm/nouveau/nouveau_mem.c +++ b/drivers/gpu/drm/nouveau/nouveau_mem.c @@ -187,3 +187,32 @@ nouveau_mem_new(struct nouveau_cli *cli, u8 kind, u8 comp, *res = &mem->base; return 0; } + +bool +nouveau_mem_intersects(struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + u32 num_pages = PFN_UP(size); + + /* Don't evict BOs outside of the requested placement range */ + if (place->fpfn >= (res->start + num_pages) || + (place->lpfn && place->lpfn <= res->start)) + return false; + + return true; +} + +bool +nouveau_mem_compatible(struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + u32 num_pages = PFN_UP(size); + + if (res->start < place->fpfn || + (place->lpfn && (res->start + num_pages) > place->lpfn)) + return false; + + return true; +} diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.h b/drivers/gpu/drm/nouveau/nouveau_mem.h index 325551eba5cd..1ee6cdb9ad9b 100644 --- a/drivers/gpu/drm/nouveau/nouveau_mem.h +++ b/drivers/gpu/drm/nouveau/nouveau_mem.h @@ -25,6 +25,12 @@ int nouveau_mem_new(struct nouveau_cli *, u8 kind, u8 comp, struct ttm_resource **); void nouveau_mem_del(struct ttm_resource_manager *man, struct ttm_resource *); +bool nouveau_mem_intersects(struct ttm_resource *res, + const struct ttm_place *place, + size_t size); +bool nouveau_mem_compatible(struct ttm_resource *res, + const struct ttm_place *place, + size_t size); int nouveau_mem_vram(struct ttm_resource *, bool contig, u8 page); int nouveau_mem_host(struct ttm_resource *, struct ttm_tt *); void nouveau_mem_fini(struct nouveau_mem *); diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c index 85f1f5a0fe5d..9602c30928f2 100644 --- a/drivers/gpu/drm/nouveau/nouveau_ttm.c +++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c @@ -42,6 +42,24 @@ nouveau_manager_del(struct ttm_resource_manager *man, nouveau_mem_del(man, reg); } +static bool +nouveau_manager_intersects(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + return nouveau_mem_intersects(res, place, size); +} + +static bool +nouveau_manager_compatible(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + return nouveau_mem_compatible(res, place, size); +} + static int nouveau_vram_manager_new(struct ttm_resource_manager *man, struct ttm_buffer_object *bo, @@ -73,6 +91,8 @@ nouveau_vram_manager_new(struct ttm_resource_manager *man, const struct ttm_resource_manager_func nouveau_vram_manager = { .alloc = nouveau_vram_manager_new, .free = nouveau_manager_del, + .intersects = nouveau_manager_intersects, + .compatible = nouveau_manager_compatible, }; static int @@ -97,6 +117,8 @@ nouveau_gart_manager_new(struct ttm_resource_manager *man, const struct ttm_resource_manager_func nouveau_gart_manager = { .alloc = nouveau_gart_manager_new, .free = nouveau_manager_del, + .intersects = nouveau_manager_intersects, + .compatible = nouveau_manager_compatible, }; static int @@ -130,6 +152,8 @@ nv04_gart_manager_new(struct ttm_resource_manager *man, const struct ttm_resource_manager_func nv04_gart_manager = { .alloc = nv04_gart_manager_new, .free = nouveau_manager_del, + .intersects = nouveau_manager_intersects, + .compatible = nouveau_manager_compatible, }; static int From 6d3c900c12d72667341bcff338c252e22728b942 Mon Sep 17 00:00:00 2001 From: Arunpravin Paneer Selvam Date: Sat, 20 Aug 2022 00:33:04 -0700 Subject: [PATCH 007/111] drm/ttm: Switch to using the new res callback MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Apply new intersect and compatible callback instead of having a generic placement range verfications. v2: Added a separate callback for compatiblilty checks (Christian) v3: Cleanups and removal of workarounds Signed-off-by: Christian König Signed-off-by: Arunpravin Paneer Selvam Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20220820073304.178444-6-Arunpravin.PaneerSelvam@amd.com --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 47 ++++++++----------------- drivers/gpu/drm/ttm/ttm_resource.c | 17 ++------- 2 files changed, 16 insertions(+), 48 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 170935c294f5..7d25a10395c0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -1328,11 +1328,12 @@ uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm, static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo, const struct ttm_place *place) { - unsigned long num_pages = bo->resource->num_pages; struct dma_resv_iter resv_cursor; - struct amdgpu_res_cursor cursor; struct dma_fence *f; + if (!amdgpu_bo_is_amdgpu_bo(bo)) + return ttm_bo_eviction_valuable(bo, place); + /* Swapout? */ if (bo->resource->mem_type == TTM_PL_SYSTEM) return true; @@ -1351,39 +1352,19 @@ static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo, return false; } - switch (bo->resource->mem_type) { - case AMDGPU_PL_PREEMPT: - /* Preemptible BOs don't own system resources managed by the - * driver (pages, VRAM, GART space). They point to resources - * owned by someone else (e.g. pageable memory in user mode - * or a DMABuf). They are used in a preemptible context so we - * can guarantee no deadlocks and good QoS in case of MMU - * notifiers or DMABuf move notifiers from the resource owner. - */ - return false; - case TTM_PL_TT: - if (amdgpu_bo_is_amdgpu_bo(bo) && - amdgpu_bo_encrypted(ttm_to_amdgpu_bo(bo))) - return false; - return true; - - case TTM_PL_VRAM: - /* Check each drm MM node individually */ - amdgpu_res_first(bo->resource, 0, (u64)num_pages << PAGE_SHIFT, - &cursor); - while (cursor.remaining) { - if (place->fpfn < PFN_DOWN(cursor.start + cursor.size) - && !(place->lpfn && - place->lpfn <= PFN_DOWN(cursor.start))) - return true; - - amdgpu_res_next(&cursor, cursor.size); - } + /* Preemptible BOs don't own system resources managed by the + * driver (pages, VRAM, GART space). They point to resources + * owned by someone else (e.g. pageable memory in user mode + * or a DMABuf). They are used in a preemptible context so we + * can guarantee no deadlocks and good QoS in case of MMU + * notifiers or DMABuf move notifiers from the resource owner. + */ + if (bo->resource->mem_type == AMDGPU_PL_PREEMPT) return false; - default: - break; - } + if (bo->resource->mem_type == TTM_PL_TT && + amdgpu_bo_encrypted(ttm_to_amdgpu_bo(bo))) + return false; return ttm_bo_eviction_valuable(bo, place); } diff --git a/drivers/gpu/drm/ttm/ttm_resource.c b/drivers/gpu/drm/ttm/ttm_resource.c index 0d1f862a582b..a729c32a1e48 100644 --- a/drivers/gpu/drm/ttm/ttm_resource.c +++ b/drivers/gpu/drm/ttm/ttm_resource.c @@ -276,17 +276,9 @@ bool ttm_resource_intersects(struct ttm_device *bdev, if (!res) return false; - if (!place) - return true; - man = ttm_manager_type(bdev, res->mem_type); - if (!man->func->intersects) { - if (place->fpfn >= (res->start + res->num_pages) || - (place->lpfn && place->lpfn <= res->start)) - return false; - + if (!place || !man->func->intersects) return true; - } return man->func->intersects(man, res, place, size); } @@ -314,13 +306,8 @@ bool ttm_resource_compatible(struct ttm_device *bdev, return false; man = ttm_manager_type(bdev, res->mem_type); - if (!man->func->compatible) { - if (res->start < place->fpfn || - (place->lpfn && (res->start + res->num_pages) > place->lpfn)) - return false; - + if (!man->func->compatible) return true; - } return man->func->compatible(man, res, place, size); } From fcfd3e5fb2f052f6f466285107f449d462277a99 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Fri, 19 Aug 2022 16:08:49 +0200 Subject: [PATCH 008/111] drm/lcdif: Clean up headers Drop unneeded headers, sort rest alphabetically, no functional change. Acked-by: Sam Ravnborg Reviewed-by: Liu Ying Reported-by: Liu Ying Tested-by: Martyn Welch Fixes: 9db35bb349a0e ("drm: lcdif: Add support for i.MX8MP LCDIF variant") Signed-off-by: Marek Vasut Cc: Alexander Stein Cc: Laurent Pinchart Cc: Liu Ying Cc: Lucas Stach Cc: Marek Vasut Cc: Martyn Welch Cc: Peng Fan Cc: Robby Cai Cc: Sam Ravnborg Cc: Stefan Agner Reviewed-by: Alexander Stein Link: https://patchwork.freedesktop.org/patch/msgid/20220819140852.255187-1-marex@denx.de --- drivers/gpu/drm/mxsfb/lcdif_drv.c | 3 --- drivers/gpu/drm/mxsfb/lcdif_drv.h | 1 + drivers/gpu/drm/mxsfb/lcdif_kms.c | 2 +- 3 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/mxsfb/lcdif_drv.c b/drivers/gpu/drm/mxsfb/lcdif_drv.c index 05db135800db..4f16947212b6 100644 --- a/drivers/gpu/drm/mxsfb/lcdif_drv.c +++ b/drivers/gpu/drm/mxsfb/lcdif_drv.c @@ -8,7 +8,6 @@ #include #include #include -#include #include #include #include @@ -16,10 +15,8 @@ #include #include -#include #include #include -#include #include #include #include diff --git a/drivers/gpu/drm/mxsfb/lcdif_drv.h b/drivers/gpu/drm/mxsfb/lcdif_drv.h index cb916341e845..6cdba6e20c02 100644 --- a/drivers/gpu/drm/mxsfb/lcdif_drv.h +++ b/drivers/gpu/drm/mxsfb/lcdif_drv.h @@ -8,6 +8,7 @@ #ifndef __LCDIF_DRV_H__ #define __LCDIF_DRV_H__ +#include #include #include #include diff --git a/drivers/gpu/drm/mxsfb/lcdif_kms.c b/drivers/gpu/drm/mxsfb/lcdif_kms.c index c7efc0d27f0e..750e7e7ea8e8 100644 --- a/drivers/gpu/drm/mxsfb/lcdif_kms.c +++ b/drivers/gpu/drm/mxsfb/lcdif_kms.c @@ -17,9 +17,9 @@ #include #include #include -#include #include #include +#include #include #include #include From 5e6723ef3fda07b4d586965af3c7af2a957480a2 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Fri, 19 Aug 2022 16:08:50 +0200 Subject: [PATCH 009/111] drm/lcdif: Consistently use plain timings Drop the crtc_ prefix from mode, consistently use the plain one. Acked-by: Sam Ravnborg Reviewed-by: Liu Ying Reported-by: Liu Ying Tested-by: Martyn Welch Fixes: 9db35bb349a0e ("drm: lcdif: Add support for i.MX8MP LCDIF variant") Signed-off-by: Marek Vasut Cc: Alexander Stein Cc: Laurent Pinchart Cc: Liu Ying Cc: Lucas Stach Cc: Marek Vasut Cc: Martyn Welch Cc: Peng Fan Cc: Robby Cai Cc: Sam Ravnborg Cc: Stefan Agner Link: https://patchwork.freedesktop.org/patch/msgid/20220819140852.255187-2-marex@denx.de --- drivers/gpu/drm/mxsfb/lcdif_kms.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/mxsfb/lcdif_kms.c b/drivers/gpu/drm/mxsfb/lcdif_kms.c index 750e7e7ea8e8..db7a90e5497c 100644 --- a/drivers/gpu/drm/mxsfb/lcdif_kms.c +++ b/drivers/gpu/drm/mxsfb/lcdif_kms.c @@ -122,8 +122,8 @@ static void lcdif_set_mode(struct lcdif_drm_private *lcdif, u32 bus_flags) writel(ctrl, lcdif->base + LCDC_V8_CTRL); - writel(DISP_SIZE_DELTA_Y(m->crtc_vdisplay) | - DISP_SIZE_DELTA_X(m->crtc_hdisplay), + writel(DISP_SIZE_DELTA_Y(m->vdisplay) | + DISP_SIZE_DELTA_X(m->hdisplay), lcdif->base + LCDC_V8_DISP_SIZE); writel(HSYN_PARA_BP_H(m->htotal - m->hsync_end) | @@ -138,8 +138,8 @@ static void lcdif_set_mode(struct lcdif_drm_private *lcdif, u32 bus_flags) VSYN_HSYN_WIDTH_PW_H(m->hsync_end - m->hsync_start), lcdif->base + LCDC_V8_VSYN_HSYN_WIDTH); - writel(CTRLDESCL0_1_HEIGHT(m->crtc_vdisplay) | - CTRLDESCL0_1_WIDTH(m->crtc_hdisplay), + writel(CTRLDESCL0_1_HEIGHT(m->vdisplay) | + CTRLDESCL0_1_WIDTH(m->hdisplay), lcdif->base + LCDC_V8_CTRLDESCL0_1); writel(CTRLDESCL0_3_PITCH(lcdif->crtc.primary->state->fb->pitches[0]), From 71c627c0a87acb13080317c5bae1f1423bebd5ef Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Fri, 19 Aug 2022 16:08:51 +0200 Subject: [PATCH 010/111] drm/lcdif: Clean up debug prints and comments Update debug print to report bridge timings over connector ones. Drop missed comment commit from mxsfb. Acked-by: Sam Ravnborg Reviewed-by: Liu Ying Reported-by: Liu Ying Tested-by: Martyn Welch Fixes: 9db35bb349a0e ("drm: lcdif: Add support for i.MX8MP LCDIF variant") Signed-off-by: Marek Vasut Cc: Alexander Stein Cc: Laurent Pinchart Cc: Liu Ying Cc: Lucas Stach Cc: Marek Vasut Cc: Martyn Welch Cc: Peng Fan Cc: Robby Cai Cc: Sam Ravnborg Cc: Stefan Agner Link: https://patchwork.freedesktop.org/patch/msgid/20220819140852.255187-3-marex@denx.de --- drivers/gpu/drm/mxsfb/lcdif_kms.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mxsfb/lcdif_kms.c b/drivers/gpu/drm/mxsfb/lcdif_kms.c index db7a90e5497c..b1092aab1423 100644 --- a/drivers/gpu/drm/mxsfb/lcdif_kms.c +++ b/drivers/gpu/drm/mxsfb/lcdif_kms.c @@ -203,7 +203,7 @@ static void lcdif_crtc_mode_set_nofb(struct lcdif_drm_private *lcdif, DRM_DEV_DEBUG_DRIVER(drm->dev, "Pixel clock: %dkHz (actual: %dkHz)\n", m->crtc_clock, (int)(clk_get_rate(lcdif->clk) / 1000)); - DRM_DEV_DEBUG_DRIVER(drm->dev, "Connector bus_flags: 0x%08X\n", + DRM_DEV_DEBUG_DRIVER(drm->dev, "Bridge bus_flags: 0x%08X\n", bus_flags); DRM_DEV_DEBUG_DRIVER(drm->dev, "Mode flags: 0x%08X\n", m->flags); From 6e1853589ea627490f85435b9e81843129b08c10 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Fri, 19 Aug 2022 16:08:52 +0200 Subject: [PATCH 011/111] drm/lcdif: switch to devm_drm_of_get_bridge The function "drm_of_find_panel_or_bridge" has been deprecated in favor of "devm_drm_of_get_bridge". Switch to the new function and reduce boilerplate. Acked-by: Sam Ravnborg Reviewed-by: Liu Ying Reported-by: Liu Ying Tested-by: Martyn Welch Fixes: 9db35bb349a0e ("drm: lcdif: Add support for i.MX8MP LCDIF variant") Signed-off-by: Marek Vasut Cc: Alexander Stein Cc: Laurent Pinchart Cc: Liu Ying Cc: Lucas Stach Cc: Marek Vasut Cc: Martyn Welch Cc: Peng Fan Cc: Robby Cai Cc: Sam Ravnborg Cc: Stefan Agner Reviewed-by: Alexander Stein Link: https://patchwork.freedesktop.org/patch/msgid/20220819140852.255187-4-marex@denx.de --- drivers/gpu/drm/mxsfb/lcdif_drv.c | 18 +++--------------- 1 file changed, 3 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/mxsfb/lcdif_drv.c b/drivers/gpu/drm/mxsfb/lcdif_drv.c index 4f16947212b6..075002ed6fb0 100644 --- a/drivers/gpu/drm/mxsfb/lcdif_drv.c +++ b/drivers/gpu/drm/mxsfb/lcdif_drv.c @@ -42,23 +42,11 @@ static int lcdif_attach_bridge(struct lcdif_drm_private *lcdif) { struct drm_device *drm = lcdif->drm; struct drm_bridge *bridge; - struct drm_panel *panel; int ret; - ret = drm_of_find_panel_or_bridge(drm->dev->of_node, 0, 0, &panel, - &bridge); - if (ret) - return ret; - - if (panel) { - bridge = devm_drm_panel_bridge_add_typed(drm->dev, panel, - DRM_MODE_CONNECTOR_DPI); - if (IS_ERR(bridge)) - return PTR_ERR(bridge); - } - - if (!bridge) - return -ENODEV; + bridge = devm_drm_of_get_bridge(drm->dev, drm->dev->of_node, 0, 0); + if (IS_ERR(bridge)) + return PTR_ERR(bridge); ret = drm_bridge_attach(&lcdif->encoder, bridge, NULL, 0); if (ret) From ee50b00244086453dfb7076e4b80214948cd0507 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 11 Jul 2022 09:52:02 +0200 Subject: [PATCH 012/111] drm/panel-edp: add AUO B133UAN02.1 panel entry Add an eDP panel entry for AUO B133UAN02.1. Due to lack of documentation, use the delay_200_500_e50 timings like some other AUO entries for now. Signed-off-by: Johan Hovold Reviewed-by: Douglas Anderson Signed-off-by: Douglas Anderson Link: https://patchwork.freedesktop.org/patch/msgid/20220711075202.21775-1-johan+linaro@kernel.org --- drivers/gpu/drm/panel/panel-edp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c index e6645d6e9b59..5263d11de952 100644 --- a/drivers/gpu/drm/panel/panel-edp.c +++ b/drivers/gpu/drm/panel/panel-edp.c @@ -1877,6 +1877,7 @@ static const struct panel_delay delay_200_500_e200 = { */ static const struct edp_panel_entry edp_panels[] = { EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"), + EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"), EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01"), EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"), EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"), From 008973fcbce429a2b0929108b6f9495d885bb1a3 Mon Sep 17 00:00:00 2001 From: Beniamin Sandu Date: Mon, 15 Aug 2022 13:40:28 +0300 Subject: [PATCH 013/111] drm/nouveau/hwmon: use simplified HWMON_CHANNEL_INFO macro This makes the code look cleaner and easier to read. Signed-off-by: Beniamin Sandu Reviewed-by: Lyude Paul Signed-off-by: Lyude Paul Link: https://patchwork.freedesktop.org/patch/msgid/20220815104028.381271-1-beniaminsandu@gmail.com --- drivers/gpu/drm/nouveau/nouveau_hwmon.c | 85 +++++-------------------- 1 file changed, 17 insertions(+), 68 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_hwmon.c b/drivers/gpu/drm/nouveau/nouveau_hwmon.c index 1c3104d20571..a7db7c31064b 100644 --- a/drivers/gpu/drm/nouveau/nouveau_hwmon.c +++ b/drivers/gpu/drm/nouveau/nouveau_hwmon.c @@ -211,75 +211,24 @@ static const struct attribute_group temp1_auto_point_sensor_group = { #define N_ATTR_GROUPS 3 -static const u32 nouveau_config_chip[] = { - HWMON_C_UPDATE_INTERVAL, - 0 -}; - -static const u32 nouveau_config_in[] = { - HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_LABEL, - 0 -}; - -static const u32 nouveau_config_temp[] = { - HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | - HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_EMERGENCY | - HWMON_T_EMERGENCY_HYST, - 0 -}; - -static const u32 nouveau_config_fan[] = { - HWMON_F_INPUT, - 0 -}; - -static const u32 nouveau_config_pwm[] = { - HWMON_PWM_INPUT | HWMON_PWM_ENABLE, - 0 -}; - -static const u32 nouveau_config_power[] = { - HWMON_P_INPUT | HWMON_P_CAP_MAX | HWMON_P_CRIT, - 0 -}; - -static const struct hwmon_channel_info nouveau_chip = { - .type = hwmon_chip, - .config = nouveau_config_chip, -}; - -static const struct hwmon_channel_info nouveau_temp = { - .type = hwmon_temp, - .config = nouveau_config_temp, -}; - -static const struct hwmon_channel_info nouveau_fan = { - .type = hwmon_fan, - .config = nouveau_config_fan, -}; - -static const struct hwmon_channel_info nouveau_in = { - .type = hwmon_in, - .config = nouveau_config_in, -}; - -static const struct hwmon_channel_info nouveau_pwm = { - .type = hwmon_pwm, - .config = nouveau_config_pwm, -}; - -static const struct hwmon_channel_info nouveau_power = { - .type = hwmon_power, - .config = nouveau_config_power, -}; - static const struct hwmon_channel_info *nouveau_info[] = { - &nouveau_chip, - &nouveau_temp, - &nouveau_fan, - &nouveau_in, - &nouveau_pwm, - &nouveau_power, + HWMON_CHANNEL_INFO(chip, + HWMON_C_UPDATE_INTERVAL), + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT | + HWMON_T_MAX | HWMON_T_MAX_HYST | + HWMON_T_CRIT | HWMON_T_CRIT_HYST | + HWMON_T_EMERGENCY | HWMON_T_EMERGENCY_HYST), + HWMON_CHANNEL_INFO(fan, + HWMON_F_INPUT), + HWMON_CHANNEL_INFO(in, + HWMON_I_INPUT | + HWMON_I_MIN | HWMON_I_MAX | + HWMON_I_LABEL), + HWMON_CHANNEL_INFO(pwm, + HWMON_PWM_INPUT | HWMON_PWM_ENABLE), + HWMON_CHANNEL_INFO(power, + HWMON_P_INPUT | HWMON_P_CAP_MAX | HWMON_P_CRIT), NULL }; From 83ebec7e0b4c2847d9cff2bcf1324cfc5287dfcb Mon Sep 17 00:00:00 2001 From: wangjianli Date: Sun, 21 Aug 2022 22:30:38 +0800 Subject: [PATCH 014/111] subdev/clk: fix repeated words in comments Delete the redundant word 'at'. Signed-off-by: wangjianli Reviewed-by: Karol Herbst Signed-off-by: Karol Herbst Link: https://patchwork.freedesktop.org/patch/msgid/20220821143038.46589-1-wangjianli@cdjrlc.com --- drivers/gpu/drm/nouveau/nvkm/subdev/clk/gm20b.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gm20b.c b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gm20b.c index a139dafffe06..7c33542f651b 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gm20b.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gm20b.c @@ -581,7 +581,7 @@ gm20b_clk_prog(struct nvkm_clk *base) /* * Interim step for changing DVFS detection settings: low enough - * frequency to be safe at at DVFS coeff = 0. + * frequency to be safe at DVFS coeff = 0. * * 1. If voltage is increasing: * - safe frequency target matches the lowest - old - frequency From 0f9fa5f58c78426a93983a2cc0127fd98b020403 Mon Sep 17 00:00:00 2001 From: Steev Klimaszewski Date: Wed, 20 Jul 2022 00:41:52 -0500 Subject: [PATCH 015/111] drm/panel-edp: add IVO M133NW4J-R3 panel entry Add an eDP panel entry for IVO M133NW4J-R3. Due to lack of documentation, use the delay_200_500_p2e100 timings for now. Signed-off-by: Steev Klimaszewski [dianders: fixed typo in commit message] Reviewed-by: Douglas Anderson Signed-off-by: Douglas Anderson Link: https://patchwork.freedesktop.org/patch/msgid/20220720054152.2450-1-steev@kali.org --- drivers/gpu/drm/panel/panel-edp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c index 5263d11de952..a95db0cfa43c 100644 --- a/drivers/gpu/drm/panel/panel-edp.c +++ b/drivers/gpu/drm/panel/panel-edp.c @@ -1891,6 +1891,7 @@ static const struct edp_panel_entry edp_panels[] = { EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"), EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"), + EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "M133NW4J-R3"), EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"), EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"), From 8c5e9bbb3662b09fb9b5353dc48d2f871f13127f Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:30 -0400 Subject: [PATCH 016/111] drm/amdgpu/dc/mst: Rename dp_mst_stream_allocation(_table) Just to make this more clear to outside contributors that these are DC-specific structs, as this also threw me into a loop a number of times before I figured out the purpose of this. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Fangzhi Zuo Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-2-lyude@redhat.com --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 9 ++++----- drivers/gpu/drm/amd/display/dc/core/dc_link.c | 10 +++++----- drivers/gpu/drm/amd/display/dc/dm_helpers.h | 4 ++-- .../gpu/drm/amd/display/include/link_service_types.h | 11 ++++++++--- 4 files changed, 19 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index d66e3cd64ebd..b2e7e1630a4b 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -153,9 +153,8 @@ enum dc_edid_status dm_helpers_parse_edid_caps( return result; } -static void get_payload_table( - struct amdgpu_dm_connector *aconnector, - struct dp_mst_stream_allocation_table *proposed_table) +static void get_payload_table(struct amdgpu_dm_connector *aconnector, + struct dc_dp_mst_stream_allocation_table *proposed_table) { int i; struct drm_dp_mst_topology_mgr *mst_mgr = @@ -177,7 +176,7 @@ static void get_payload_table( mst_mgr->payloads[i].payload_state == DP_PAYLOAD_REMOTE) { - struct dp_mst_stream_allocation *sa = + struct dc_dp_mst_stream_allocation *sa = &proposed_table->stream_allocations[ proposed_table->stream_count]; @@ -201,7 +200,7 @@ void dm_helpers_dp_update_branch_info( bool dm_helpers_dp_mst_write_payload_allocation_table( struct dc_context *ctx, const struct dc_stream_state *stream, - struct dp_mst_stream_allocation_table *proposed_table, + struct dc_dp_mst_stream_allocation_table *proposed_table, bool enable) { struct amdgpu_dm_connector *aconnector; diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 9e51338441d0..e01424fb02ba 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -3516,7 +3516,7 @@ static void update_mst_stream_alloc_table( struct dc_link *link, struct stream_encoder *stream_enc, struct hpo_dp_stream_encoder *hpo_dp_stream_enc, // TODO: Rename stream_enc to dio_stream_enc? - const struct dp_mst_stream_allocation_table *proposed_table) + const struct dc_dp_mst_stream_allocation_table *proposed_table) { struct link_mst_stream_allocation work_table[MAX_CONTROLLER_NUM] = { 0 }; struct link_mst_stream_allocation *dc_alloc; @@ -3679,7 +3679,7 @@ enum dc_status dc_link_allocate_mst_payload(struct pipe_ctx *pipe_ctx) { struct dc_stream_state *stream = pipe_ctx->stream; struct dc_link *link = stream->link; - struct dp_mst_stream_allocation_table proposed_table = {0}; + struct dc_dp_mst_stream_allocation_table proposed_table = {0}; struct fixed31_32 avg_time_slots_per_mtp; struct fixed31_32 pbn; struct fixed31_32 pbn_per_slot; @@ -3784,7 +3784,7 @@ enum dc_status dc_link_reduce_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t bw struct fixed31_32 avg_time_slots_per_mtp; struct fixed31_32 pbn; struct fixed31_32 pbn_per_slot; - struct dp_mst_stream_allocation_table proposed_table = {0}; + struct dc_dp_mst_stream_allocation_table proposed_table = {0}; uint8_t i; const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res); DC_LOGGER_INIT(link->ctx->logger); @@ -3873,7 +3873,7 @@ enum dc_status dc_link_increase_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t struct fixed31_32 avg_time_slots_per_mtp; struct fixed31_32 pbn; struct fixed31_32 pbn_per_slot; - struct dp_mst_stream_allocation_table proposed_table = {0}; + struct dc_dp_mst_stream_allocation_table proposed_table = {0}; uint8_t i; enum act_return_status ret; const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res); @@ -3957,7 +3957,7 @@ static enum dc_status deallocate_mst_payload(struct pipe_ctx *pipe_ctx) { struct dc_stream_state *stream = pipe_ctx->stream; struct dc_link *link = stream->link; - struct dp_mst_stream_allocation_table proposed_table = {0}; + struct dc_dp_mst_stream_allocation_table proposed_table = {0}; struct fixed31_32 avg_time_slots_per_mtp = dc_fixpt_from_int(0); int i; bool mst_mode = (link->type == dc_connection_mst_branch); diff --git a/drivers/gpu/drm/amd/display/dc/dm_helpers.h b/drivers/gpu/drm/amd/display/dc/dm_helpers.h index fb6a2d7b6470..8173f4b80424 100644 --- a/drivers/gpu/drm/amd/display/dc/dm_helpers.h +++ b/drivers/gpu/drm/amd/display/dc/dm_helpers.h @@ -33,7 +33,7 @@ #include "dc_types.h" #include "dc.h" -struct dp_mst_stream_allocation_table; +struct dc_dp_mst_stream_allocation_table; struct aux_payload; enum aux_return_code_type; @@ -77,7 +77,7 @@ void dm_helpers_dp_update_branch_info( bool dm_helpers_dp_mst_write_payload_allocation_table( struct dc_context *ctx, const struct dc_stream_state *stream, - struct dp_mst_stream_allocation_table *proposed_table, + struct dc_dp_mst_stream_allocation_table *proposed_table, bool enable); /* diff --git a/drivers/gpu/drm/amd/display/include/link_service_types.h b/drivers/gpu/drm/amd/display/include/link_service_types.h index 79fabc51c991..f75ed6f8fcb8 100644 --- a/drivers/gpu/drm/amd/display/include/link_service_types.h +++ b/drivers/gpu/drm/amd/display/include/link_service_types.h @@ -246,8 +246,13 @@ union dpcd_training_lane_set { }; +/* AMD's copy of various payload data for MST. We have two copies of the payload table (one in DRM, + * one in DC) since DRM's MST helpers can't be accessed here. This stream allocation table should + * _ONLY_ be filled out from DM and then passed to DC, do NOT use these for _any_ kind of atomic + * state calculations in DM, or you will break something. + */ /* DP MST stream allocation (payload bandwidth number) */ -struct dp_mst_stream_allocation { +struct dc_dp_mst_stream_allocation { uint8_t vcp_id; /* number of slots required for the DP stream in * transport packet */ @@ -255,11 +260,11 @@ struct dp_mst_stream_allocation { }; /* DP MST stream allocation table */ -struct dp_mst_stream_allocation_table { +struct dc_dp_mst_stream_allocation_table { /* number of DP video streams */ int stream_count; /* array of stream allocations */ - struct dp_mst_stream_allocation stream_allocations[MAX_CONTROLLER_NUM]; + struct dc_dp_mst_stream_allocation stream_allocations[MAX_CONTROLLER_NUM]; }; #endif /*__DAL_LINK_SERVICE_TYPES_H__*/ From dbaadb3cebaad49c37e3fec937e73e6e41054404 Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:31 -0400 Subject: [PATCH 017/111] drm/amdgpu/dm/mst: Rename get_payload_table() This function isn't too confusing if you see the comment around the call-site for it, but if you don't then it's not at all obvious this is meant to copy DRM's payload table over to DC's internal state structs. Seeing this function before finding that comment definitely threw me into a loop a few times. So, let's rename this to make it's purpose more obvious regardless of where in the code you are. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Fangzhi Zuo Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-3-lyude@redhat.com --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index b2e7e1630a4b..0177a275b4df 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -153,8 +153,9 @@ enum dc_edid_status dm_helpers_parse_edid_caps( return result; } -static void get_payload_table(struct amdgpu_dm_connector *aconnector, - struct dc_dp_mst_stream_allocation_table *proposed_table) +static void +fill_dc_mst_payload_table_from_drm(struct amdgpu_dm_connector *aconnector, + struct dc_dp_mst_stream_allocation_table *proposed_table) { int i; struct drm_dp_mst_topology_mgr *mst_mgr = @@ -252,7 +253,7 @@ bool dm_helpers_dp_mst_write_payload_allocation_table( * stream. AMD ASIC stream slot allocation should follow the same * sequence. copy DRM MST allocation to dc */ - get_payload_table(aconnector, proposed_table); + fill_dc_mst_payload_table_from_drm(aconnector, proposed_table); return true; } From 48b6b3726fb7c189410959d2b8915c209fbf9e7c Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:32 -0400 Subject: [PATCH 018/111] drm/display/dp_mst: Rename drm_dp_mst_vcpi_allocation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In retrospect, the name I chose for this originally is confusing, as there's a lot more info in here then just the VCPI. This really should be called a payload. Let's make it more obvious that this is meant to be related to the atomic state and is about payloads by renaming it to drm_dp_mst_atomic_payload. Also, rename various variables throughout the code that use atomic payloads. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-4-lyude@redhat.com --- drivers/gpu/drm/display/drm_dp_mst_topology.c | 96 +++++++++---------- include/drm/display/drm_dp_mst_helper.h | 4 +- 2 files changed, 50 insertions(+), 50 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index 7a94a5288e8d..f448e3e5ec6e 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -4370,7 +4370,7 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, int pbn_div) { struct drm_dp_mst_topology_state *topology_state; - struct drm_dp_vcpi_allocation *pos, *vcpi = NULL; + struct drm_dp_mst_atomic_payload *pos, *payload = NULL; int prev_slots, prev_bw, req_slots; topology_state = drm_atomic_get_mst_topology_state(state, mgr); @@ -4378,11 +4378,11 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, return PTR_ERR(topology_state); /* Find the current allocation for this port, if any */ - list_for_each_entry(pos, &topology_state->vcpis, next) { + list_for_each_entry(pos, &topology_state->payloads, next) { if (pos->port == port) { - vcpi = pos; - prev_slots = vcpi->vcpi; - prev_bw = vcpi->pbn; + payload = pos; + prev_slots = payload->vcpi; + prev_bw = payload->pbn; /* * This should never happen, unless the driver tries @@ -4399,7 +4399,7 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, break; } } - if (!vcpi) { + if (!payload) { prev_slots = 0; prev_bw = 0; } @@ -4417,17 +4417,17 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, port, prev_bw, pbn); /* Add the new allocation to the state */ - if (!vcpi) { - vcpi = kzalloc(sizeof(*vcpi), GFP_KERNEL); - if (!vcpi) + if (!payload) { + payload = kzalloc(sizeof(*payload), GFP_KERNEL); + if (!payload) return -ENOMEM; drm_dp_mst_get_port_malloc(port); - vcpi->port = port; - list_add(&vcpi->next, &topology_state->vcpis); + payload->port = port; + list_add(&payload->next, &topology_state->payloads); } - vcpi->vcpi = req_slots; - vcpi->pbn = pbn; + payload->vcpi = req_slots; + payload->pbn = pbn; return req_slots; } @@ -4464,21 +4464,21 @@ int drm_dp_atomic_release_vcpi_slots(struct drm_atomic_state *state, struct drm_dp_mst_port *port) { struct drm_dp_mst_topology_state *topology_state; - struct drm_dp_vcpi_allocation *pos; + struct drm_dp_mst_atomic_payload *pos; bool found = false; topology_state = drm_atomic_get_mst_topology_state(state, mgr); if (IS_ERR(topology_state)) return PTR_ERR(topology_state); - list_for_each_entry(pos, &topology_state->vcpis, next) { + list_for_each_entry(pos, &topology_state->payloads, next) { if (pos->port == port) { found = true; break; } } if (WARN_ON(!found)) { - drm_err(mgr->dev, "no VCPI for [MST PORT:%p] found in mst state %p\n", + drm_err(mgr->dev, "No payload for [MST PORT:%p] found in mst state %p\n", port, &topology_state->base); return -EINVAL; } @@ -5060,7 +5060,7 @@ drm_dp_mst_duplicate_state(struct drm_private_obj *obj) { struct drm_dp_mst_topology_state *state, *old_state = to_dp_mst_topology_state(obj->state); - struct drm_dp_vcpi_allocation *pos, *vcpi; + struct drm_dp_mst_atomic_payload *pos, *payload; state = kmemdup(old_state, sizeof(*state), GFP_KERNEL); if (!state) @@ -5068,25 +5068,25 @@ drm_dp_mst_duplicate_state(struct drm_private_obj *obj) __drm_atomic_helper_private_obj_duplicate_state(obj, &state->base); - INIT_LIST_HEAD(&state->vcpis); + INIT_LIST_HEAD(&state->payloads); - list_for_each_entry(pos, &old_state->vcpis, next) { + list_for_each_entry(pos, &old_state->payloads, next) { /* Prune leftover freed VCPI allocations */ if (!pos->vcpi) continue; - vcpi = kmemdup(pos, sizeof(*vcpi), GFP_KERNEL); - if (!vcpi) + payload = kmemdup(pos, sizeof(*payload), GFP_KERNEL); + if (!payload) goto fail; - drm_dp_mst_get_port_malloc(vcpi->port); - list_add(&vcpi->next, &state->vcpis); + drm_dp_mst_get_port_malloc(payload->port); + list_add(&payload->next, &state->payloads); } return &state->base; fail: - list_for_each_entry_safe(pos, vcpi, &state->vcpis, next) { + list_for_each_entry_safe(pos, payload, &state->payloads, next) { drm_dp_mst_put_port_malloc(pos->port); kfree(pos); } @@ -5100,9 +5100,9 @@ static void drm_dp_mst_destroy_state(struct drm_private_obj *obj, { struct drm_dp_mst_topology_state *mst_state = to_dp_mst_topology_state(state); - struct drm_dp_vcpi_allocation *pos, *tmp; + struct drm_dp_mst_atomic_payload *pos, *tmp; - list_for_each_entry_safe(pos, tmp, &mst_state->vcpis, next) { + list_for_each_entry_safe(pos, tmp, &mst_state->payloads, next) { /* We only keep references to ports with non-zero VCPIs */ if (pos->vcpi) drm_dp_mst_put_port_malloc(pos->port); @@ -5135,7 +5135,7 @@ static int drm_dp_mst_atomic_check_mstb_bw_limit(struct drm_dp_mst_branch *mstb, struct drm_dp_mst_topology_state *state) { - struct drm_dp_vcpi_allocation *vcpi; + struct drm_dp_mst_atomic_payload *payload; struct drm_dp_mst_port *port; int pbn_used = 0, ret; bool found = false; @@ -5143,9 +5143,9 @@ drm_dp_mst_atomic_check_mstb_bw_limit(struct drm_dp_mst_branch *mstb, /* Check that we have at least one port in our state that's downstream * of this branch, otherwise we can skip this branch */ - list_for_each_entry(vcpi, &state->vcpis, next) { - if (!vcpi->pbn || - !drm_dp_mst_port_downstream_of_branch(vcpi->port, mstb)) + list_for_each_entry(payload, &state->payloads, next) { + if (!payload->pbn || + !drm_dp_mst_port_downstream_of_branch(payload->port, mstb)) continue; found = true; @@ -5176,7 +5176,7 @@ static int drm_dp_mst_atomic_check_port_bw_limit(struct drm_dp_mst_port *port, struct drm_dp_mst_topology_state *state) { - struct drm_dp_vcpi_allocation *vcpi; + struct drm_dp_mst_atomic_payload *payload; int pbn_used = 0; if (port->pdt == DP_PEER_DEVICE_NONE) @@ -5185,10 +5185,10 @@ drm_dp_mst_atomic_check_port_bw_limit(struct drm_dp_mst_port *port, if (drm_dp_mst_is_end_device(port->pdt, port->mcs)) { bool found = false; - list_for_each_entry(vcpi, &state->vcpis, next) { - if (vcpi->port != port) + list_for_each_entry(payload, &state->payloads, next) { + if (payload->port != port) continue; - if (!vcpi->pbn) + if (!payload->pbn) return 0; found = true; @@ -5208,7 +5208,7 @@ drm_dp_mst_atomic_check_port_bw_limit(struct drm_dp_mst_port *port, return -EINVAL; } - pbn_used = vcpi->pbn; + pbn_used = payload->pbn; } else { pbn_used = drm_dp_mst_atomic_check_mstb_bw_limit(port->mstb, state); @@ -5233,25 +5233,25 @@ static inline int drm_dp_mst_atomic_check_vcpi_alloc_limit(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_topology_state *mst_state) { - struct drm_dp_vcpi_allocation *vcpi; + struct drm_dp_mst_atomic_payload *payload; int avail_slots = mst_state->total_avail_slots, payload_count = 0; - list_for_each_entry(vcpi, &mst_state->vcpis, next) { - /* Releasing VCPI is always OK-even if the port is gone */ - if (!vcpi->vcpi) { + list_for_each_entry(payload, &mst_state->payloads, next) { + /* Releasing payloads is always OK-even if the port is gone */ + if (!payload->vcpi) { drm_dbg_atomic(mgr->dev, "[MST PORT:%p] releases all VCPI slots\n", - vcpi->port); + payload->port); continue; } drm_dbg_atomic(mgr->dev, "[MST PORT:%p] requires %d vcpi slots\n", - vcpi->port, vcpi->vcpi); + payload->port, payload->vcpi); - avail_slots -= vcpi->vcpi; + avail_slots -= payload->vcpi; if (avail_slots < 0) { drm_dbg_atomic(mgr->dev, "[MST PORT:%p] not enough VCPI slots in mst state %p (avail=%d)\n", - vcpi->port, mst_state, avail_slots + vcpi->vcpi); + payload->port, mst_state, avail_slots + payload->vcpi); return -ENOSPC; } @@ -5284,7 +5284,7 @@ drm_dp_mst_atomic_check_vcpi_alloc_limit(struct drm_dp_mst_topology_mgr *mgr, int drm_dp_mst_add_affected_dsc_crtcs(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr) { struct drm_dp_mst_topology_state *mst_state; - struct drm_dp_vcpi_allocation *pos; + struct drm_dp_mst_atomic_payload *pos; struct drm_connector *connector; struct drm_connector_state *conn_state; struct drm_crtc *crtc; @@ -5295,7 +5295,7 @@ int drm_dp_mst_add_affected_dsc_crtcs(struct drm_atomic_state *state, struct drm if (IS_ERR(mst_state)) return -EINVAL; - list_for_each_entry(pos, &mst_state->vcpis, next) { + list_for_each_entry(pos, &mst_state->payloads, next) { connector = pos->port->connector; @@ -5349,7 +5349,7 @@ int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, bool enable) { struct drm_dp_mst_topology_state *mst_state; - struct drm_dp_vcpi_allocation *pos; + struct drm_dp_mst_atomic_payload *pos; bool found = false; int vcpi = 0; @@ -5358,7 +5358,7 @@ int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, if (IS_ERR(mst_state)) return PTR_ERR(mst_state); - list_for_each_entry(pos, &mst_state->vcpis, next) { + list_for_each_entry(pos, &mst_state->payloads, next) { if (pos->port == port) { found = true; break; @@ -5544,7 +5544,7 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, mst_state->start_slot = 1; mst_state->mgr = mgr; - INIT_LIST_HEAD(&mst_state->vcpis); + INIT_LIST_HEAD(&mst_state->payloads); drm_atomic_private_obj_init(dev, &mgr->base, &mst_state->base, diff --git a/include/drm/display/drm_dp_mst_helper.h b/include/drm/display/drm_dp_mst_helper.h index 10adec068b7f..5671173f9f37 100644 --- a/include/drm/display/drm_dp_mst_helper.h +++ b/include/drm/display/drm_dp_mst_helper.h @@ -542,7 +542,7 @@ struct drm_dp_payload { #define to_dp_mst_topology_state(x) container_of(x, struct drm_dp_mst_topology_state, base) -struct drm_dp_vcpi_allocation { +struct drm_dp_mst_atomic_payload { struct drm_dp_mst_port *port; int vcpi; int pbn; @@ -552,7 +552,7 @@ struct drm_dp_vcpi_allocation { struct drm_dp_mst_topology_state { struct drm_private_state base; - struct list_head vcpis; + struct list_head payloads; struct drm_dp_mst_topology_mgr *mgr; u8 total_avail_slots; u8 start_slot; From df78f7f660cdd5974b68649a95dbb34da4d4dfa7 Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:33 -0400 Subject: [PATCH 019/111] drm/display/dp_mst: Call them time slots, not VCPI slots MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit VCPI is only sort of the correct term here, originally the majority of this code simply referred to timeslots vaguely as "slots" - and since I started working on it and adding atomic functionality, the name "VCPI slots" has been used to represent time slots. Now that we actually have consistent access to the DisplayPort spec thanks to VESA, I now know this isn't actually the proper term - as the specification refers to these as time slots. Since we're trying to make this code as easy to figure out as possible, let's take this opportunity to correct this nomenclature and call them by their proper name - timeslots. Likewise, we rename various functions appropriately, along with replacing references in the kernel documentation and various debugging messages. It's important to note that this patch series leaves the legacy MST code untouched for the most part, which is fine since we'll be removing it soon anyhow. There should be no functional changes in this series. v2: * Add note that Wayne Lin from AMD suggested regarding slots being between the source DP Tx and the immediate downstream DP Rx Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-5-lyude@redhat.com --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +- .../display/amdgpu_dm/amdgpu_dm_mst_types.c | 28 ++--- drivers/gpu/drm/display/drm_dp_mst_topology.c | 106 +++++++++--------- drivers/gpu/drm/i915/display/intel_dp_mst.c | 5 +- drivers/gpu/drm/nouveau/dispnv50/disp.c | 4 +- include/drm/display/drm_dp_mst_helper.h | 12 +- 6 files changed, 81 insertions(+), 76 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 85fdd6baf803..cd30b02af8ee 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6401,7 +6401,7 @@ static int dm_encoder_helper_atomic_check(struct drm_encoder *encoder, clock = adjusted_mode->clock; dm_new_connector_state->pbn = drm_dp_calc_pbn_mode(clock, bpp, false); } - dm_new_connector_state->vcpi_slots = drm_dp_atomic_find_vcpi_slots(state, + dm_new_connector_state->vcpi_slots = drm_dp_atomic_find_time_slots(state, mst_mgr, mst_port, dm_new_connector_state->pbn, diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 2e74ccf7df5b..655d63b20b33 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -472,7 +472,7 @@ static int dm_dp_mst_atomic_check(struct drm_connector *connector, return 0; } - return drm_dp_atomic_release_vcpi_slots(state, + return drm_dp_atomic_release_time_slots(state, mst_mgr, mst_port); } @@ -785,7 +785,7 @@ static bool increase_dsc_bpp(struct drm_atomic_state *state, if (initial_slack[next_index] > fair_pbn_alloc) { vars[next_index].pbn += fair_pbn_alloc; - if (drm_dp_atomic_find_vcpi_slots(state, + if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, vars[next_index].pbn, @@ -795,7 +795,7 @@ static bool increase_dsc_bpp(struct drm_atomic_state *state, vars[next_index].bpp_x16 = bpp_x16_from_pbn(params[next_index], vars[next_index].pbn); } else { vars[next_index].pbn -= fair_pbn_alloc; - if (drm_dp_atomic_find_vcpi_slots(state, + if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, vars[next_index].pbn, @@ -804,7 +804,7 @@ static bool increase_dsc_bpp(struct drm_atomic_state *state, } } else { vars[next_index].pbn += initial_slack[next_index]; - if (drm_dp_atomic_find_vcpi_slots(state, + if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, vars[next_index].pbn, @@ -814,7 +814,7 @@ static bool increase_dsc_bpp(struct drm_atomic_state *state, vars[next_index].bpp_x16 = params[next_index].bw_range.max_target_bpp_x16; } else { vars[next_index].pbn -= initial_slack[next_index]; - if (drm_dp_atomic_find_vcpi_slots(state, + if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, vars[next_index].pbn, @@ -872,7 +872,7 @@ static bool try_disable_dsc(struct drm_atomic_state *state, break; vars[next_index].pbn = kbps_to_peak_pbn(params[next_index].bw_range.stream_kbps); - if (drm_dp_atomic_find_vcpi_slots(state, + if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, vars[next_index].pbn, @@ -884,7 +884,7 @@ static bool try_disable_dsc(struct drm_atomic_state *state, vars[next_index].bpp_x16 = 0; } else { vars[next_index].pbn = kbps_to_peak_pbn(params[next_index].bw_range.max_kbps); - if (drm_dp_atomic_find_vcpi_slots(state, + if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, vars[next_index].pbn, @@ -971,11 +971,11 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps); vars[i + k].dsc_enabled = false; vars[i + k].bpp_x16 = 0; - if (drm_dp_atomic_find_vcpi_slots(state, - params[i].port->mgr, - params[i].port, - vars[i + k].pbn, - dm_mst_get_pbn_divider(dc_link)) < 0) + if (drm_dp_atomic_find_time_slots(state, + params[i].port->mgr, + params[i].port, + vars[i + k].pbn, + dm_mst_get_pbn_divider(dc_link)) < 0) return false; } if (!drm_dp_mst_atomic_check(state) && !debugfs_overwrite) { @@ -989,7 +989,7 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.min_kbps); vars[i + k].dsc_enabled = true; vars[i + k].bpp_x16 = params[i].bw_range.min_target_bpp_x16; - if (drm_dp_atomic_find_vcpi_slots(state, + if (drm_dp_atomic_find_time_slots(state, params[i].port->mgr, params[i].port, vars[i + k].pbn, @@ -999,7 +999,7 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps); vars[i + k].dsc_enabled = false; vars[i + k].bpp_x16 = 0; - if (drm_dp_atomic_find_vcpi_slots(state, + if (drm_dp_atomic_find_time_slots(state, params[i].port->mgr, params[i].port, vars[i + k].pbn, diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index f448e3e5ec6e..fad80ab2b9db 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -4293,11 +4293,11 @@ struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_ EXPORT_SYMBOL(drm_dp_mst_get_edid); /** - * drm_dp_find_vcpi_slots() - Find VCPI slots for this PBN value + * drm_dp_find_vcpi_slots() - Find time slots for this PBN value * @mgr: manager to use * @pbn: payload bandwidth to convert into slots. * - * Calculate the number of VCPI slots that will be required for the given PBN + * Calculate the number of time slots that will be required for the given PBN * value. This function is deprecated, and should not be used in atomic * drivers. * @@ -4334,17 +4334,17 @@ static int drm_dp_init_vcpi(struct drm_dp_mst_topology_mgr *mgr, } /** - * drm_dp_atomic_find_vcpi_slots() - Find and add VCPI slots to the state + * drm_dp_atomic_find_time_slots() - Find and add time slots to the state * @state: global atomic state * @mgr: MST topology manager for the port - * @port: port to find vcpi slots for + * @port: port to find time slots for * @pbn: bandwidth required for the mode in PBN * @pbn_div: divider for DSC mode that takes FEC into account * - * Allocates VCPI slots to @port, replacing any previous VCPI allocations it + * Allocates time slots to @port, replacing any previous timeslot allocations it * may have had. Any atomic drivers which support MST must call this function * in their &drm_encoder_helper_funcs.atomic_check() callback to change the - * current VCPI allocation for the new state, but only when + * current timeslot allocation for the new state, but only when * &drm_crtc_state.mode_changed or &drm_crtc_state.connectors_changed is set * to ensure compatibility with userspace applications that still use the * legacy modesetting UAPI. @@ -4354,17 +4354,17 @@ static int drm_dp_init_vcpi(struct drm_dp_mst_topology_mgr *mgr, * * Additionally, it is OK to call this function multiple times on the same * @port as needed. It is not OK however, to call this function and - * drm_dp_atomic_release_vcpi_slots() in the same atomic check phase. + * drm_dp_atomic_release_time_slots() in the same atomic check phase. * * See also: - * drm_dp_atomic_release_vcpi_slots() + * drm_dp_atomic_release_time_slots() * drm_dp_mst_atomic_check() * * Returns: * Total slots in the atomic state assigned for this port, or a negative error * code if the port no longer exists */ -int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, +int drm_dp_atomic_find_time_slots(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, int pbn, int pbn_div) @@ -4381,17 +4381,17 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, list_for_each_entry(pos, &topology_state->payloads, next) { if (pos->port == port) { payload = pos; - prev_slots = payload->vcpi; + prev_slots = payload->time_slots; prev_bw = payload->pbn; /* * This should never happen, unless the driver tries - * releasing and allocating the same VCPI allocation, + * releasing and allocating the same timeslot allocation, * which is an error */ if (WARN_ON(!prev_slots)) { drm_err(mgr->dev, - "cannot allocate and release VCPI on [MST PORT:%p] in the same state\n", + "cannot allocate and release time slots on [MST PORT:%p] in the same state\n", port); return -EINVAL; } @@ -4409,7 +4409,7 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, req_slots = DIV_ROUND_UP(pbn, pbn_div); - drm_dbg_atomic(mgr->dev, "[CONNECTOR:%d:%s] [MST PORT:%p] VCPI %d -> %d\n", + drm_dbg_atomic(mgr->dev, "[CONNECTOR:%d:%s] [MST PORT:%p] TU %d -> %d\n", port->connector->base.id, port->connector->name, port, prev_slots, req_slots); drm_dbg_atomic(mgr->dev, "[CONNECTOR:%d:%s] [MST PORT:%p] PBN %d -> %d\n", @@ -4426,20 +4426,20 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, payload->port = port; list_add(&payload->next, &topology_state->payloads); } - payload->vcpi = req_slots; + payload->time_slots = req_slots; payload->pbn = pbn; return req_slots; } -EXPORT_SYMBOL(drm_dp_atomic_find_vcpi_slots); +EXPORT_SYMBOL(drm_dp_atomic_find_time_slots); /** - * drm_dp_atomic_release_vcpi_slots() - Release allocated vcpi slots + * drm_dp_atomic_release_time_slots() - Release allocated time slots * @state: global atomic state * @mgr: MST topology manager for the port - * @port: The port to release the VCPI slots from + * @port: The port to release the time slots from * - * Releases any VCPI slots that have been allocated to a port in the atomic + * Releases any time slots that have been allocated to a port in the atomic * state. Any atomic drivers which support MST must call this function in * their &drm_connector_helper_funcs.atomic_check() callback when the * connector will no longer have VCPI allocated (e.g. because its CRTC was @@ -4448,18 +4448,18 @@ EXPORT_SYMBOL(drm_dp_atomic_find_vcpi_slots); * It is OK to call this even if @port has been removed from the system. * Additionally, it is OK to call this function multiple times on the same * @port as needed. It is not OK however, to call this function and - * drm_dp_atomic_find_vcpi_slots() on the same @port in a single atomic check + * drm_dp_atomic_find_time_slots() on the same @port in a single atomic check * phase. * * See also: - * drm_dp_atomic_find_vcpi_slots() + * drm_dp_atomic_find_time_slots() * drm_dp_mst_atomic_check() * * Returns: * 0 if all slots for this port were added back to * &drm_dp_mst_topology_state.avail_slots or negative error code */ -int drm_dp_atomic_release_vcpi_slots(struct drm_atomic_state *state, +int drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port) { @@ -4483,16 +4483,16 @@ int drm_dp_atomic_release_vcpi_slots(struct drm_atomic_state *state, return -EINVAL; } - drm_dbg_atomic(mgr->dev, "[MST PORT:%p] VCPI %d -> 0\n", port, pos->vcpi); - if (pos->vcpi) { + drm_dbg_atomic(mgr->dev, "[MST PORT:%p] TU %d -> 0\n", port, pos->time_slots); + if (pos->time_slots) { drm_dp_mst_put_port_malloc(port); - pos->vcpi = 0; + pos->time_slots = 0; pos->pbn = 0; } return 0; } -EXPORT_SYMBOL(drm_dp_atomic_release_vcpi_slots); +EXPORT_SYMBOL(drm_dp_atomic_release_time_slots); /** * drm_dp_mst_update_slots() - updates the slot info depending on the DP ecoding format @@ -4546,7 +4546,7 @@ bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, ret = drm_dp_init_vcpi(mgr, &port->vcpi, pbn, slots); if (ret) { - drm_dbg_kms(mgr->dev, "failed to init vcpi slots=%d ret=%d\n", + drm_dbg_kms(mgr->dev, "failed to init time slots=%d ret=%d\n", DIV_ROUND_UP(pbn, mgr->pbn_div), ret); drm_dp_mst_topology_put_port(port); goto out; @@ -5071,8 +5071,8 @@ drm_dp_mst_duplicate_state(struct drm_private_obj *obj) INIT_LIST_HEAD(&state->payloads); list_for_each_entry(pos, &old_state->payloads, next) { - /* Prune leftover freed VCPI allocations */ - if (!pos->vcpi) + /* Prune leftover freed timeslot allocations */ + if (!pos->time_slots) continue; payload = kmemdup(pos, sizeof(*payload), GFP_KERNEL); @@ -5104,7 +5104,7 @@ static void drm_dp_mst_destroy_state(struct drm_private_obj *obj, list_for_each_entry_safe(pos, tmp, &mst_state->payloads, next) { /* We only keep references to ports with non-zero VCPIs */ - if (pos->vcpi) + if (pos->time_slots) drm_dp_mst_put_port_malloc(pos->port); kfree(pos); } @@ -5230,28 +5230,28 @@ drm_dp_mst_atomic_check_port_bw_limit(struct drm_dp_mst_port *port, } static inline int -drm_dp_mst_atomic_check_vcpi_alloc_limit(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_topology_state *mst_state) +drm_dp_mst_atomic_check_payload_alloc_limits(struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_topology_state *mst_state) { struct drm_dp_mst_atomic_payload *payload; int avail_slots = mst_state->total_avail_slots, payload_count = 0; list_for_each_entry(payload, &mst_state->payloads, next) { /* Releasing payloads is always OK-even if the port is gone */ - if (!payload->vcpi) { - drm_dbg_atomic(mgr->dev, "[MST PORT:%p] releases all VCPI slots\n", + if (!payload->time_slots) { + drm_dbg_atomic(mgr->dev, "[MST PORT:%p] releases all time slots\n", payload->port); continue; } - drm_dbg_atomic(mgr->dev, "[MST PORT:%p] requires %d vcpi slots\n", - payload->port, payload->vcpi); + drm_dbg_atomic(mgr->dev, "[MST PORT:%p] requires %d time slots\n", + payload->port, payload->time_slots); - avail_slots -= payload->vcpi; + avail_slots -= payload->time_slots; if (avail_slots < 0) { drm_dbg_atomic(mgr->dev, - "[MST PORT:%p] not enough VCPI slots in mst state %p (avail=%d)\n", - payload->port, mst_state, avail_slots + payload->vcpi); + "[MST PORT:%p] not enough time slots in mst state %p (avail=%d)\n", + payload->port, mst_state, avail_slots + payload->time_slots); return -ENOSPC; } @@ -5262,7 +5262,7 @@ drm_dp_mst_atomic_check_vcpi_alloc_limit(struct drm_dp_mst_topology_mgr *mgr, return -EINVAL; } } - drm_dbg_atomic(mgr->dev, "[MST MGR:%p] mst state %p VCPI avail=%d used=%d\n", + drm_dbg_atomic(mgr->dev, "[MST MGR:%p] mst state %p TU avail=%d used=%d\n", mgr, mst_state, avail_slots, mst_state->total_avail_slots - avail_slots); return 0; @@ -5351,7 +5351,7 @@ int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, struct drm_dp_mst_topology_state *mst_state; struct drm_dp_mst_atomic_payload *pos; bool found = false; - int vcpi = 0; + int time_slots = 0; mst_state = drm_atomic_get_mst_topology_state(state, port->mgr); @@ -5367,30 +5367,30 @@ int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, if (!found) { drm_dbg_atomic(state->dev, - "[MST PORT:%p] Couldn't find VCPI allocation in mst state %p\n", + "[MST PORT:%p] Couldn't find payload in mst state %p\n", port, mst_state); return -EINVAL; } if (pos->dsc_enabled == enable) { drm_dbg_atomic(state->dev, - "[MST PORT:%p] DSC flag is already set to %d, returning %d VCPI slots\n", - port, enable, pos->vcpi); - vcpi = pos->vcpi; + "[MST PORT:%p] DSC flag is already set to %d, returning %d time slots\n", + port, enable, pos->time_slots); + time_slots = pos->time_slots; } if (enable) { - vcpi = drm_dp_atomic_find_vcpi_slots(state, port->mgr, port, pbn, pbn_div); + time_slots = drm_dp_atomic_find_time_slots(state, port->mgr, port, pbn, pbn_div); drm_dbg_atomic(state->dev, - "[MST PORT:%p] Enabling DSC flag, reallocating %d VCPI slots on the port\n", - port, vcpi); - if (vcpi < 0) + "[MST PORT:%p] Enabling DSC flag, reallocating %d time slots on the port\n", + port, time_slots); + if (time_slots < 0) return -EINVAL; } pos->dsc_enabled = enable; - return vcpi; + return time_slots; } EXPORT_SYMBOL(drm_dp_mst_atomic_enable_dsc); /** @@ -5400,15 +5400,15 @@ EXPORT_SYMBOL(drm_dp_mst_atomic_enable_dsc); * * Checks the given topology state for an atomic update to ensure that it's * valid. This includes checking whether there's enough bandwidth to support - * the new VCPI allocations in the atomic update. + * the new timeslot allocations in the atomic update. * * Any atomic drivers supporting DP MST must make sure to call this after * checking the rest of their state in their * &drm_mode_config_funcs.atomic_check() callback. * * See also: - * drm_dp_atomic_find_vcpi_slots() - * drm_dp_atomic_release_vcpi_slots() + * drm_dp_atomic_find_time_slots() + * drm_dp_atomic_release_time_slots() * * Returns: * @@ -5424,7 +5424,7 @@ int drm_dp_mst_atomic_check(struct drm_atomic_state *state) if (!mgr->mst_state) continue; - ret = drm_dp_mst_atomic_check_vcpi_alloc_limit(mgr, mst_state); + ret = drm_dp_mst_atomic_check_payload_alloc_limits(mgr, mst_state); if (ret) break; diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 14d2a64193b2..1cebbc51d8fa 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -70,7 +70,7 @@ static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder, crtc_state->pipe_bpp, false); - slots = drm_dp_atomic_find_vcpi_slots(state, &intel_dp->mst_mgr, + slots = drm_dp_atomic_find_time_slots(state, &intel_dp->mst_mgr, connector->port, crtc_state->pbn, drm_dp_get_vc_payload_bw(&intel_dp->mst_mgr, @@ -344,8 +344,7 @@ intel_dp_mst_atomic_check(struct drm_connector *connector, } mgr = &enc_to_mst(to_intel_encoder(old_conn_state->best_encoder))->primary->dp.mst_mgr; - ret = drm_dp_atomic_release_vcpi_slots(&state->base, mgr, - intel_connector->port); + ret = drm_dp_atomic_release_time_slots(&state->base, mgr, intel_connector->port); return ret; } diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index c8fedd7d227f..1d54f2cd38b2 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -1065,7 +1065,7 @@ nv50_msto_atomic_check(struct drm_encoder *encoder, false); } - slots = drm_dp_atomic_find_vcpi_slots(state, &mstm->mgr, mstc->port, + slots = drm_dp_atomic_find_time_slots(state, &mstm->mgr, mstc->port, asyh->dp.pbn, 0); if (slots < 0) return slots; @@ -1277,7 +1277,7 @@ nv50_mstc_atomic_check(struct drm_connector *connector, return 0; } - return drm_dp_atomic_release_vcpi_slots(state, mgr, mstc->port); + return drm_dp_atomic_release_time_slots(state, mgr, mstc->port); } static int diff --git a/include/drm/display/drm_dp_mst_helper.h b/include/drm/display/drm_dp_mst_helper.h index 5671173f9f37..9cdd2def56a1 100644 --- a/include/drm/display/drm_dp_mst_helper.h +++ b/include/drm/display/drm_dp_mst_helper.h @@ -544,7 +544,13 @@ struct drm_dp_payload { struct drm_dp_mst_atomic_payload { struct drm_dp_mst_port *port; - int vcpi; + + /** + * @time_slots: + * The number of timeslots allocated to this payload from the source DP Tx to + * the immediate downstream DP Rx + */ + int time_slots; int pbn; bool dsc_enabled; struct list_head next; @@ -846,7 +852,7 @@ void drm_dp_mst_connector_early_unregister(struct drm_connector *connector, struct drm_dp_mst_topology_state *drm_atomic_get_mst_topology_state(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr); int __must_check -drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, +drm_dp_atomic_find_time_slots(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, int pbn, int pbn_div); @@ -858,7 +864,7 @@ int __must_check drm_dp_mst_add_affected_dsc_crtcs(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr); int __must_check -drm_dp_atomic_release_vcpi_slots(struct drm_atomic_state *state, +drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port); int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, From 946c701407c33867573767db7a23e2b6696b5d9b Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:34 -0400 Subject: [PATCH 020/111] drm/display/dp_mst: Fix confusing docs for drm_dp_atomic_release_time_slots() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit For some reason we mention returning 0 if "slots have been added back to drm_dp_mst_topology_state->avail_slots". This is totally misleading, avail_slots is simply for figuring out the total number of slots available in total on the topology and has no relation to the current payload allocations. So, let's get rid of that comment. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-6-lyude@redhat.com --- drivers/gpu/drm/display/drm_dp_mst_topology.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index fad80ab2b9db..8a2ddfde594a 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -4456,8 +4456,7 @@ EXPORT_SYMBOL(drm_dp_atomic_find_time_slots); * drm_dp_mst_atomic_check() * * Returns: - * 0 if all slots for this port were added back to - * &drm_dp_mst_topology_state.avail_slots or negative error code + * 0 on success, negative error code otherwise */ int drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr, From 0bee2ae29eb4bdeaf5fb80b4ef48877bc448485a Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:35 -0400 Subject: [PATCH 021/111] drm/display/dp_mst: Add some missing kdocs for atomic MST structs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since we're about to start adding some stuff here, we may as well fill in any missing documentation that we forgot to write. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-7-lyude@redhat.com --- include/drm/display/drm_dp_mst_helper.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/include/drm/display/drm_dp_mst_helper.h b/include/drm/display/drm_dp_mst_helper.h index 9cdd2def56a1..3b155ad3eee4 100644 --- a/include/drm/display/drm_dp_mst_helper.h +++ b/include/drm/display/drm_dp_mst_helper.h @@ -542,7 +542,14 @@ struct drm_dp_payload { #define to_dp_mst_topology_state(x) container_of(x, struct drm_dp_mst_topology_state, base) +/** + * struct drm_dp_mst_atomic_payload - Atomic state struct for an MST payload + * + * The primary atomic state structure for a given MST payload. Stores information like current + * bandwidth allocation, intended action for this payload, etc. + */ struct drm_dp_mst_atomic_payload { + /** @port: The MST port assigned to this payload */ struct drm_dp_mst_port *port; /** @@ -551,16 +558,32 @@ struct drm_dp_mst_atomic_payload { * the immediate downstream DP Rx */ int time_slots; + /** @pbn: The payload bandwidth for this payload */ int pbn; + /** @dsc_enabled: Whether or not this payload has DSC enabled */ bool dsc_enabled; + + /** @next: The list node for this payload */ struct list_head next; }; +/** + * struct drm_dp_mst_topology_state - DisplayPort MST topology atomic state + * + * This struct represents the atomic state of the toplevel DisplayPort MST manager + */ struct drm_dp_mst_topology_state { + /** @base: Base private state for atomic */ struct drm_private_state base; + + /** @payloads: The list of payloads being created/destroyed in this state */ struct list_head payloads; + /** @mgr: The topology manager */ struct drm_dp_mst_topology_mgr *mgr; + + /** @total_avail_slots: The total number of slots this topology can handle (63 or 64) */ u8 total_avail_slots; + /** @start_slot: The first usable time slot in this topology (1 or 0) */ u8 start_slot; }; From 0b4e477e08a14ef852d5a633cee10e4187730005 Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:36 -0400 Subject: [PATCH 022/111] drm/display/dp_mst: Add helper for finding payloads in atomic MST state MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We already open-code this quite often, and will be iterating through payloads even more once we've moved all of the payload tracking into the atomic state. So, let's add a helper for doing this. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-8-lyude@redhat.com --- drivers/gpu/drm/display/drm_dp_mst_topology.c | 109 ++++++++---------- 1 file changed, 45 insertions(+), 64 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index 8a2ddfde594a..1c054a5e2e77 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -1738,6 +1738,19 @@ drm_dp_mst_dump_port_topology_history(struct drm_dp_mst_port *port) {} #define save_port_topology_ref(port, type) #endif +static struct drm_dp_mst_atomic_payload * +drm_atomic_get_mst_payload_state(struct drm_dp_mst_topology_state *state, + struct drm_dp_mst_port *port) +{ + struct drm_dp_mst_atomic_payload *payload; + + list_for_each_entry(payload, &state->payloads, next) + if (payload->port == port) + return payload; + + return NULL; +} + static void drm_dp_destroy_mst_branch_device(struct kref *kref) { struct drm_dp_mst_branch *mstb = @@ -4370,39 +4383,31 @@ int drm_dp_atomic_find_time_slots(struct drm_atomic_state *state, int pbn_div) { struct drm_dp_mst_topology_state *topology_state; - struct drm_dp_mst_atomic_payload *pos, *payload = NULL; - int prev_slots, prev_bw, req_slots; + struct drm_dp_mst_atomic_payload *payload = NULL; + int prev_slots = 0, prev_bw = 0, req_slots; topology_state = drm_atomic_get_mst_topology_state(state, mgr); if (IS_ERR(topology_state)) return PTR_ERR(topology_state); /* Find the current allocation for this port, if any */ - list_for_each_entry(pos, &topology_state->payloads, next) { - if (pos->port == port) { - payload = pos; - prev_slots = payload->time_slots; - prev_bw = payload->pbn; + payload = drm_atomic_get_mst_payload_state(topology_state, port); + if (payload) { + prev_slots = payload->time_slots; + prev_bw = payload->pbn; - /* - * This should never happen, unless the driver tries - * releasing and allocating the same timeslot allocation, - * which is an error - */ - if (WARN_ON(!prev_slots)) { - drm_err(mgr->dev, - "cannot allocate and release time slots on [MST PORT:%p] in the same state\n", - port); - return -EINVAL; - } - - break; + /* + * This should never happen, unless the driver tries + * releasing and allocating the same timeslot allocation, + * which is an error + */ + if (WARN_ON(!prev_slots)) { + drm_err(mgr->dev, + "cannot allocate and release time slots on [MST PORT:%p] in the same state\n", + port); + return -EINVAL; } } - if (!payload) { - prev_slots = 0; - prev_bw = 0; - } if (pbn_div <= 0) pbn_div = mgr->pbn_div; @@ -4463,30 +4468,24 @@ int drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, struct drm_dp_mst_port *port) { struct drm_dp_mst_topology_state *topology_state; - struct drm_dp_mst_atomic_payload *pos; - bool found = false; + struct drm_dp_mst_atomic_payload *payload; topology_state = drm_atomic_get_mst_topology_state(state, mgr); if (IS_ERR(topology_state)) return PTR_ERR(topology_state); - list_for_each_entry(pos, &topology_state->payloads, next) { - if (pos->port == port) { - found = true; - break; - } - } - if (WARN_ON(!found)) { + payload = drm_atomic_get_mst_payload_state(topology_state, port); + if (WARN_ON(!payload)) { drm_err(mgr->dev, "No payload for [MST PORT:%p] found in mst state %p\n", port, &topology_state->base); return -EINVAL; } - drm_dbg_atomic(mgr->dev, "[MST PORT:%p] TU %d -> 0\n", port, pos->time_slots); - if (pos->time_slots) { + drm_dbg_atomic(mgr->dev, "[MST PORT:%p] TU %d -> 0\n", port, payload->time_slots); + if (payload->time_slots) { drm_dp_mst_put_port_malloc(port); - pos->time_slots = 0; - pos->pbn = 0; + payload->time_slots = 0; + payload->pbn = 0; } return 0; @@ -5182,18 +5181,8 @@ drm_dp_mst_atomic_check_port_bw_limit(struct drm_dp_mst_port *port, return 0; if (drm_dp_mst_is_end_device(port->pdt, port->mcs)) { - bool found = false; - - list_for_each_entry(payload, &state->payloads, next) { - if (payload->port != port) - continue; - if (!payload->pbn) - return 0; - - found = true; - break; - } - if (!found) + payload = drm_atomic_get_mst_payload_state(state, port); + if (!payload) return 0; /* @@ -5348,34 +5337,26 @@ int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, bool enable) { struct drm_dp_mst_topology_state *mst_state; - struct drm_dp_mst_atomic_payload *pos; - bool found = false; + struct drm_dp_mst_atomic_payload *payload; int time_slots = 0; mst_state = drm_atomic_get_mst_topology_state(state, port->mgr); - if (IS_ERR(mst_state)) return PTR_ERR(mst_state); - list_for_each_entry(pos, &mst_state->payloads, next) { - if (pos->port == port) { - found = true; - break; - } - } - - if (!found) { + payload = drm_atomic_get_mst_payload_state(mst_state, port); + if (!payload) { drm_dbg_atomic(state->dev, "[MST PORT:%p] Couldn't find payload in mst state %p\n", port, mst_state); return -EINVAL; } - if (pos->dsc_enabled == enable) { + if (payload->dsc_enabled == enable) { drm_dbg_atomic(state->dev, "[MST PORT:%p] DSC flag is already set to %d, returning %d time slots\n", - port, enable, pos->time_slots); - time_slots = pos->time_slots; + port, enable, payload->time_slots); + time_slots = payload->time_slots; } if (enable) { @@ -5387,7 +5368,7 @@ int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, return -EINVAL; } - pos->dsc_enabled = enable; + payload->dsc_enabled = enable; return time_slots; } From a5c2c0d164e96d24f73faffcd3b7bbb607e701a9 Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:37 -0400 Subject: [PATCH 023/111] drm/display/dp_mst: Add nonblocking helpers for DP MST MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit As Daniel Vetter pointed out, if we only use the atomic modesetting locks with MST it's technically possible for a driver with non-blocking modesets to race when it comes to MST displays - as we make the mistake of not doing our own CRTC commit tracking in the topology_state object. This could potentially cause problems if something like this happens: * User starts non-blocking commit to disable CRTC-1 on MST topology 1 * User starts non-blocking commit to enable CRTC-2 on MST topology 1 There's no guarantee here that the commit for disabling CRTC-2 will only occur after CRTC-1 has finished, since neither commit shares a CRTC - only the private modesetting object for MST. Keep in mind this likely isn't a problem for blocking modesets, only non-blocking. So, begin fixing this by keeping track of which CRTCs on a topology have changed by keeping track of which CRTCs we release or allocate timeslots on. As well, add some helpers for: * Setting up the drm_crtc_commit structs in the ->commit_setup hook * Waiting for any CRTC dependencies from the previous topology state v2: * Use drm_dp_mst_atomic_setup_commit() directly - Jani Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-9-lyude@redhat.com --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 5 +- drivers/gpu/drm/display/drm_dp_mst_topology.c | 93 +++++++++++++++++++ drivers/gpu/drm/i915/display/intel_display.c | 6 ++ drivers/gpu/drm/nouveau/dispnv50/disp.c | 7 ++ include/drm/display/drm_dp_mst_helper.h | 15 +++ 5 files changed, 124 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index cd30b02af8ee..c97a4d759b94 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2808,7 +2808,8 @@ static const struct drm_mode_config_funcs amdgpu_dm_mode_funcs = { }; static struct drm_mode_config_helper_funcs amdgpu_dm_mode_config_helperfuncs = { - .atomic_commit_tail = amdgpu_dm_atomic_commit_tail + .atomic_commit_tail = amdgpu_dm_atomic_commit_tail, + .atomic_commit_setup = drm_dp_mst_atomic_setup_commit, }; static void update_connector_ext_caps(struct amdgpu_dm_connector *aconnector) @@ -7959,6 +7960,7 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) DRM_ERROR("Waiting for fences timed out!"); drm_atomic_helper_update_legacy_modeset_state(dev, state); + drm_dp_mst_atomic_wait_for_dependencies(state); dm_state = dm_atomic_get_new_state(state); if (dm_state && dm_state->context) { @@ -8357,7 +8359,6 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) dc_release_state(dc_state_temp); } - static int dm_force_atomic_commit(struct drm_connector *connector) { int ret = 0; diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index 1c054a5e2e77..d701e5b819b8 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -4384,12 +4384,16 @@ int drm_dp_atomic_find_time_slots(struct drm_atomic_state *state, { struct drm_dp_mst_topology_state *topology_state; struct drm_dp_mst_atomic_payload *payload = NULL; + struct drm_connector_state *conn_state; int prev_slots = 0, prev_bw = 0, req_slots; topology_state = drm_atomic_get_mst_topology_state(state, mgr); if (IS_ERR(topology_state)) return PTR_ERR(topology_state); + conn_state = drm_atomic_get_new_connector_state(state, port->connector); + topology_state->pending_crtc_mask |= drm_crtc_mask(conn_state->crtc); + /* Find the current allocation for this port, if any */ payload = drm_atomic_get_mst_payload_state(topology_state, port); if (payload) { @@ -4469,11 +4473,15 @@ int drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, { struct drm_dp_mst_topology_state *topology_state; struct drm_dp_mst_atomic_payload *payload; + struct drm_connector_state *conn_state; topology_state = drm_atomic_get_mst_topology_state(state, mgr); if (IS_ERR(topology_state)) return PTR_ERR(topology_state); + conn_state = drm_atomic_get_old_connector_state(state, port->connector); + topology_state->pending_crtc_mask |= drm_crtc_mask(conn_state->crtc); + payload = drm_atomic_get_mst_payload_state(topology_state, port); if (WARN_ON(!payload)) { drm_err(mgr->dev, "No payload for [MST PORT:%p] found in mst state %p\n", @@ -4492,6 +4500,83 @@ int drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, } EXPORT_SYMBOL(drm_dp_atomic_release_time_slots); +/** + * drm_dp_mst_atomic_setup_commit() - setup_commit hook for MST helpers + * @state: global atomic state + * + * This function saves all of the &drm_crtc_commit structs in an atomic state that touch any CRTCs + * currently assigned to an MST topology. Drivers must call this hook from their + * &drm_mode_config_helper_funcs.atomic_commit_setup hook. + * + * Returns: + * 0 if all CRTC commits were retrieved successfully, negative error code otherwise + */ +int drm_dp_mst_atomic_setup_commit(struct drm_atomic_state *state) +{ + struct drm_dp_mst_topology_mgr *mgr; + struct drm_dp_mst_topology_state *mst_state; + struct drm_crtc *crtc; + struct drm_crtc_state *crtc_state; + int i, j, commit_idx, num_commit_deps; + + for_each_new_mst_mgr_in_state(state, mgr, mst_state, i) { + if (!mst_state->pending_crtc_mask) + continue; + + num_commit_deps = hweight32(mst_state->pending_crtc_mask); + mst_state->commit_deps = kmalloc_array(num_commit_deps, + sizeof(*mst_state->commit_deps), GFP_KERNEL); + if (!mst_state->commit_deps) + return -ENOMEM; + mst_state->num_commit_deps = num_commit_deps; + + commit_idx = 0; + for_each_new_crtc_in_state(state, crtc, crtc_state, j) { + if (mst_state->pending_crtc_mask & drm_crtc_mask(crtc)) { + mst_state->commit_deps[commit_idx++] = + drm_crtc_commit_get(crtc_state->commit); + } + } + } + + return 0; +} +EXPORT_SYMBOL(drm_dp_mst_atomic_setup_commit); + +/** + * drm_dp_mst_atomic_wait_for_dependencies() - Wait for all pending commits on MST topologies + * @state: global atomic state + * + * Goes through any MST topologies in this atomic state, and waits for any pending commits which + * touched CRTCs that were/are on an MST topology to be programmed to hardware and flipped to before + * returning. This is to prevent multiple non-blocking commits affecting an MST topology from racing + * with eachother by forcing them to be executed sequentially in situations where the only resources + * the modeset objects in these commits share are an MST topology. + * + * This function also prepares the new MST state for commit by performing some state preparation + * which can't be done until this point, such as reading back the final VC start slots (which are + * determined at commit-time) from the previous state. + * + * All MST drivers must call this function after calling drm_atomic_helper_wait_for_dependencies(), + * or whatever their equivalent of that is. + */ +void drm_dp_mst_atomic_wait_for_dependencies(struct drm_atomic_state *state) +{ + struct drm_dp_mst_topology_state *old_mst_state; + struct drm_dp_mst_topology_mgr *mgr; + int i, j, ret; + + for_each_old_mst_mgr_in_state(state, mgr, old_mst_state, i) { + for (j = 0; j < old_mst_state->num_commit_deps; j++) { + ret = drm_crtc_commit_wait(old_mst_state->commit_deps[j]); + if (ret < 0) + drm_err(state->dev, "Failed to wait for %s: %d\n", + old_mst_state->commit_deps[j]->crtc->name, ret); + } + } +} +EXPORT_SYMBOL(drm_dp_mst_atomic_wait_for_dependencies); + /** * drm_dp_mst_update_slots() - updates the slot info depending on the DP ecoding format * @mst_state: mst_state to update @@ -5067,6 +5152,9 @@ drm_dp_mst_duplicate_state(struct drm_private_obj *obj) __drm_atomic_helper_private_obj_duplicate_state(obj, &state->base); INIT_LIST_HEAD(&state->payloads); + state->commit_deps = NULL; + state->num_commit_deps = 0; + state->pending_crtc_mask = 0; list_for_each_entry(pos, &old_state->payloads, next) { /* Prune leftover freed timeslot allocations */ @@ -5099,6 +5187,7 @@ static void drm_dp_mst_destroy_state(struct drm_private_obj *obj, struct drm_dp_mst_topology_state *mst_state = to_dp_mst_topology_state(state); struct drm_dp_mst_atomic_payload *pos, *tmp; + int i; list_for_each_entry_safe(pos, tmp, &mst_state->payloads, next) { /* We only keep references to ports with non-zero VCPIs */ @@ -5107,6 +5196,10 @@ static void drm_dp_mst_destroy_state(struct drm_private_obj *obj, kfree(pos); } + for (i = 0; i < mst_state->num_commit_deps; i++) + drm_crtc_commit_put(mst_state->commit_deps[i]); + + kfree(mst_state->commit_deps); kfree(mst_state); } diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index bf170bd83ef7..2a45a25e42fb 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -7532,6 +7532,7 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state) intel_atomic_commit_fence_wait(state); drm_atomic_helper_wait_for_dependencies(&state->base); + drm_dp_mst_atomic_wait_for_dependencies(&state->base); if (state->modeset) wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_MODESET); @@ -8600,6 +8601,10 @@ out: return ret; } +static const struct drm_mode_config_helper_funcs intel_mode_config_funcs = { + .atomic_commit_setup = drm_dp_mst_atomic_setup_commit, +}; + static void intel_mode_config_init(struct drm_i915_private *i915) { struct drm_mode_config *mode_config = &i915->drm.mode_config; @@ -8614,6 +8619,7 @@ static void intel_mode_config_init(struct drm_i915_private *i915) mode_config->prefer_shadow = 1; mode_config->funcs = &intel_mode_funcs; + mode_config->helper_private = &intel_mode_config_funcs; mode_config->async_page_flip = HAS_ASYNC_FLIPS(i915); diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index 1d54f2cd38b2..c55af5d78ea2 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -2136,6 +2136,7 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state) nv50_crc_atomic_stop_reporting(state); drm_atomic_helper_wait_for_fences(dev, state, false); drm_atomic_helper_wait_for_dependencies(state); + drm_dp_mst_atomic_wait_for_dependencies(state); drm_atomic_helper_update_legacy_modeset_state(dev, state); drm_atomic_helper_calc_timestamping_constants(state); @@ -2616,6 +2617,11 @@ nv50_disp_func = { .atomic_state_free = nv50_disp_atomic_state_free, }; +static const struct drm_mode_config_helper_funcs +nv50_disp_helper_func = { + .atomic_commit_setup = drm_dp_mst_atomic_setup_commit, +}; + /****************************************************************************** * Init *****************************************************************************/ @@ -2699,6 +2705,7 @@ nv50_display_create(struct drm_device *dev) nouveau_display(dev)->fini = nv50_display_fini; disp->disp = &nouveau_display(dev)->disp; dev->mode_config.funcs = &nv50_disp_func; + dev->mode_config.helper_private = &nv50_disp_helper_func; dev->mode_config.quirk_addfb_prefer_xbgr_30bpp = true; dev->mode_config.normalize_zpos = true; diff --git a/include/drm/display/drm_dp_mst_helper.h b/include/drm/display/drm_dp_mst_helper.h index 3b155ad3eee4..0ef7d0e6cf0c 100644 --- a/include/drm/display/drm_dp_mst_helper.h +++ b/include/drm/display/drm_dp_mst_helper.h @@ -581,6 +581,19 @@ struct drm_dp_mst_topology_state { /** @mgr: The topology manager */ struct drm_dp_mst_topology_mgr *mgr; + /** + * @pending_crtc_mask: A bitmask of all CRTCs this topology state touches, drivers may + * modify this to add additional dependencies if needed. + */ + u32 pending_crtc_mask; + /** + * @commit_deps: A list of all CRTC commits affecting this topology, this field isn't + * populated until drm_dp_mst_atomic_wait_for_dependencies() is called. + */ + struct drm_crtc_commit **commit_deps; + /** @num_commit_deps: The number of CRTC commits in @commit_deps */ + size_t num_commit_deps; + /** @total_avail_slots: The total number of slots this topology can handle (63 or 64) */ u8 total_avail_slots; /** @start_slot: The first usable time slot in this topology (1 or 0) */ @@ -890,6 +903,8 @@ int __must_check drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port); +void drm_dp_mst_atomic_wait_for_dependencies(struct drm_atomic_state *state); +int __must_check drm_dp_mst_atomic_setup_commit(struct drm_atomic_state *state); int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, bool power_up); int drm_dp_send_query_stream_enc_status(struct drm_dp_mst_topology_mgr *mgr, From ffac9721939dca3f0ac7bfa90f3dc484b19c2706 Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:38 -0400 Subject: [PATCH 024/111] drm/display/dp_mst: Don't open code modeset checks for releasing time slots MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit I'm not sure why, but at the time I originally wrote the find/release time slot helpers I thought we should avoid keeping modeset tracking out of the MST helpers. In retrospect though there's no actual good reason to do this, and the logic has ended up being identical across all the drivers using the helpers. Also, it needs to be fixed anyway so we don't break things when going atomic-only with MST. So, let's just move this code into drm_dp_atomic_release_time_slots() and stop open coding it. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-10-lyude@redhat.com --- .../display/amdgpu_dm/amdgpu_dm_mst_types.c | 29 +++---------------- drivers/gpu/drm/display/drm_dp_mst_topology.c | 21 ++++++++++++-- drivers/gpu/drm/i915/display/intel_dp_mst.c | 24 +-------------- drivers/gpu/drm/nouveau/dispnv50/disp.c | 21 -------------- 4 files changed, 23 insertions(+), 72 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 655d63b20b33..7a0d6cfa77f5 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -447,34 +447,13 @@ dm_dp_mst_detect(struct drm_connector *connector, } static int dm_dp_mst_atomic_check(struct drm_connector *connector, - struct drm_atomic_state *state) + struct drm_atomic_state *state) { - struct drm_connector_state *new_conn_state = - drm_atomic_get_new_connector_state(state, connector); - struct drm_connector_state *old_conn_state = - drm_atomic_get_old_connector_state(state, connector); struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector); - struct drm_crtc_state *new_crtc_state; - struct drm_dp_mst_topology_mgr *mst_mgr; - struct drm_dp_mst_port *mst_port; + struct drm_dp_mst_topology_mgr *mst_mgr = &aconnector->mst_port->mst_mgr; + struct drm_dp_mst_port *mst_port = aconnector->port; - mst_port = aconnector->port; - mst_mgr = &aconnector->mst_port->mst_mgr; - - if (!old_conn_state->crtc) - return 0; - - if (new_conn_state->crtc) { - new_crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); - if (!new_crtc_state || - !drm_atomic_crtc_needs_modeset(new_crtc_state) || - new_crtc_state->enable) - return 0; - } - - return drm_dp_atomic_release_time_slots(state, - mst_mgr, - mst_port); + return drm_dp_atomic_release_time_slots(state, mst_mgr, mst_port); } static const struct drm_connector_helper_funcs dm_dp_mst_connector_helper_funcs = { diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index d701e5b819b8..aa6dcd9ff6a5 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -4473,14 +4473,29 @@ int drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, { struct drm_dp_mst_topology_state *topology_state; struct drm_dp_mst_atomic_payload *payload; - struct drm_connector_state *conn_state; + struct drm_connector_state *old_conn_state, *new_conn_state; + + old_conn_state = drm_atomic_get_old_connector_state(state, port->connector); + if (!old_conn_state->crtc) + return 0; + + /* If the CRTC isn't disabled by this state, don't release it's payload */ + new_conn_state = drm_atomic_get_new_connector_state(state, port->connector); + if (new_conn_state->crtc) { + struct drm_crtc_state *crtc_state = + drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); + + if (!crtc_state || + !drm_atomic_crtc_needs_modeset(crtc_state) || + crtc_state->enable) + return 0; + } topology_state = drm_atomic_get_mst_topology_state(state, mgr); if (IS_ERR(topology_state)) return PTR_ERR(topology_state); - conn_state = drm_atomic_get_old_connector_state(state, port->connector); - topology_state->pending_crtc_mask |= drm_crtc_mask(conn_state->crtc); + topology_state->pending_crtc_mask |= drm_crtc_mask(old_conn_state->crtc); payload = drm_atomic_get_mst_payload_state(topology_state, port); if (WARN_ON(!payload)) { diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 1cebbc51d8fa..1b067cd73261 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -308,13 +308,10 @@ intel_dp_mst_atomic_check(struct drm_connector *connector, struct drm_atomic_state *_state) { struct intel_atomic_state *state = to_intel_atomic_state(_state); - struct drm_connector_state *new_conn_state = - drm_atomic_get_new_connector_state(&state->base, connector); struct drm_connector_state *old_conn_state = drm_atomic_get_old_connector_state(&state->base, connector); struct intel_connector *intel_connector = to_intel_connector(connector); - struct drm_crtc *new_crtc = new_conn_state->crtc; struct drm_dp_mst_topology_mgr *mgr; int ret; @@ -326,27 +323,8 @@ intel_dp_mst_atomic_check(struct drm_connector *connector, if (ret) return ret; - if (!old_conn_state->crtc) - return 0; - - /* We only want to free VCPI if this state disables the CRTC on this - * connector - */ - if (new_crtc) { - struct intel_crtc *crtc = to_intel_crtc(new_crtc); - struct intel_crtc_state *crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - - if (!crtc_state || - !drm_atomic_crtc_needs_modeset(&crtc_state->uapi) || - crtc_state->uapi.enable) - return 0; - } - mgr = &enc_to_mst(to_intel_encoder(old_conn_state->best_encoder))->primary->dp.mst_mgr; - ret = drm_dp_atomic_release_time_slots(&state->base, mgr, intel_connector->port); - - return ret; + return drm_dp_atomic_release_time_slots(&state->base, mgr, intel_connector->port); } static void clear_act_sent(struct intel_encoder *encoder, diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index c55af5d78ea2..5669c8d747d7 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -1255,27 +1255,6 @@ nv50_mstc_atomic_check(struct drm_connector *connector, { struct nv50_mstc *mstc = nv50_mstc(connector); struct drm_dp_mst_topology_mgr *mgr = &mstc->mstm->mgr; - struct drm_connector_state *new_conn_state = - drm_atomic_get_new_connector_state(state, connector); - struct drm_connector_state *old_conn_state = - drm_atomic_get_old_connector_state(state, connector); - struct drm_crtc_state *crtc_state; - struct drm_crtc *new_crtc = new_conn_state->crtc; - - if (!old_conn_state->crtc) - return 0; - - /* We only want to free VCPI if this state disables the CRTC on this - * connector - */ - if (new_crtc) { - crtc_state = drm_atomic_get_new_crtc_state(state, new_crtc); - - if (!crtc_state || - !drm_atomic_crtc_needs_modeset(crtc_state) || - crtc_state->enable) - return 0; - } return drm_dp_atomic_release_time_slots(state, mgr, mstc->port); } From 083351e963865a7eab55158042b81b8f8c0316b6 Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:39 -0400 Subject: [PATCH 025/111] drm/display/dp_mst: Fix modeset tracking in drm_dp_atomic_release_vcpi_slots() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently with the MST helpers we avoid releasing payloads _and_ avoid pulling in the MST state if there aren't any actual payload changes. While we want to keep the first step, we need to now make sure that we're always pulling in the MST state on all modesets that can modify payloads - even if the resulting payloads in the atomic state are identical to the previous ones. This is mainly to make it so that if a CRTC is still assigned to a connector but is set to DPMS off, the CRTC still holds it's payload allocation in the atomic state and still appropriately pulls in the MST state for commit tracking. Otherwise, we'll occasionally forget to update MST payloads from changes caused by non-atomic DPMS changes. Doing this also allows us to track bandwidth limitations in a state correctly even between DPMS changes, so that there's no chance of a simple ->active change being rejected by the atomic check. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-11-lyude@redhat.com --- drivers/gpu/drm/display/drm_dp_mst_topology.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index aa6dcd9ff6a5..2f7c43f88d74 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -4474,6 +4474,7 @@ int drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, struct drm_dp_mst_topology_state *topology_state; struct drm_dp_mst_atomic_payload *payload; struct drm_connector_state *old_conn_state, *new_conn_state; + bool update_payload = true; old_conn_state = drm_atomic_get_old_connector_state(state, port->connector); if (!old_conn_state->crtc) @@ -4485,10 +4486,12 @@ int drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); - if (!crtc_state || - !drm_atomic_crtc_needs_modeset(crtc_state) || - crtc_state->enable) + /* No modeset means no payload changes, so it's safe to not pull in the MST state */ + if (!crtc_state || !drm_atomic_crtc_needs_modeset(crtc_state)) return 0; + + if (!crtc_state->mode_changed && !crtc_state->connectors_changed) + update_payload = false; } topology_state = drm_atomic_get_mst_topology_state(state, mgr); @@ -4496,6 +4499,8 @@ int drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, return PTR_ERR(topology_state); topology_state->pending_crtc_mask |= drm_crtc_mask(old_conn_state->crtc); + if (!update_payload) + return 0; payload = drm_atomic_get_mst_payload_state(topology_state, port); if (WARN_ON(!payload)) { From 11d2738940ebeb3fd3abc78d44684d5edb400a6e Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:40 -0400 Subject: [PATCH 026/111] drm/nouveau/kms: Cache DP encoders in nouveau_connector Post-NV50, the only kind of encoder you'll find for DP connectors on Nvidia GPUs are SORs (serial output resources). Because SORs have fixed associations with their connectors, we can correctly assume that any DP connector on a nvidia GPU will have exactly one SOR encoder routed to it for DisplayPort. Since we're going to need to be able to retrieve this fixed SOR DP encoder much more often as a result of hooking up MST helpers for tracking SST<->MST transitions in atomic states, let's simply cache this encoder in nouveau_connector for any DP connectors on the system to avoid looking it up each time. This isn't safe for NV50 since PIORs then come into play, however there's no code pre-NV50 that would need to look this up anyhow - so it's not really an issue. Signed-off-by: Lyude Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-12-lyude@redhat.com --- drivers/gpu/drm/nouveau/nouveau_connector.c | 4 +++- drivers/gpu/drm/nouveau/nouveau_connector.h | 3 +++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c index 8100c75ee731..b8ee2173ca8f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -1368,7 +1368,7 @@ nouveau_connector_create(struct drm_device *dev, return ERR_PTR(-ENOMEM); } drm_dp_aux_init(&nv_connector->aux); - fallthrough; + break; default: funcs = &nouveau_connector_funcs; break; @@ -1431,6 +1431,8 @@ nouveau_connector_create(struct drm_device *dev, switch (type) { case DRM_MODE_CONNECTOR_DisplayPort: + nv_connector->dp_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP); + fallthrough; case DRM_MODE_CONNECTOR_eDP: drm_dp_cec_register_connector(&nv_connector->aux, connector); break; diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.h b/drivers/gpu/drm/nouveau/nouveau_connector.h index 4bf0c703eee7..f4e17ff68bf9 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.h +++ b/drivers/gpu/drm/nouveau/nouveau_connector.h @@ -128,6 +128,9 @@ struct nouveau_connector { struct drm_dp_aux aux; + /* The fixed DP encoder for this connector, if there is one */ + struct nouveau_encoder *dp_encoder; + int dithering_mode; int scaling_mode; From 21167510605470d53c94e7162ae886c8fb67d93d Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:41 -0400 Subject: [PATCH 027/111] drm/nouveau/kms: Pull mst state in for all modesets Since we're going to be relying on atomic locking for payloads now (and the MST mgr needs to track CRTCs), pull in the topology state for all modesets in nv50_msto_atomic_check(). Signed-off-by: Lyude Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-13-lyude@redhat.com --- drivers/gpu/drm/nouveau/dispnv50/disp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index 5669c8d747d7..24807aa9da5f 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -1049,7 +1049,7 @@ nv50_msto_atomic_check(struct drm_encoder *encoder, if (ret) return ret; - if (!crtc_state->mode_changed && !crtc_state->connectors_changed) + if (!drm_atomic_crtc_needs_modeset(crtc_state)) return 0; /* From a76eb4297f90301fa9e4c888fb06749ef1be1c86 Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:42 -0400 Subject: [PATCH 028/111] drm/display/dp_mst: Add helpers for serializing SST <-> MST transitions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There's another kind of situation where we could potentially race with nonblocking modesets and MST, especially if we were to only use the locking provided by atomic modesetting: * Display 1 begins as enabled on DP-1 in SST mode * Display 1 switches to MST mode, exposes one sink in MST mode * Userspace does non-blocking modeset to disable the SST display * Userspace does non-blocking modeset to enable the MST display with a different CRTC, but the SST display hasn't been fully taken down yet * Execution order between the last two commits isn't guaranteed since they share no drm resources We can fix this however, by ensuring that we always pull in the atomic topology state whenever a connector capable of driving an MST display performs its atomic check - and then tracking CRTC commits happening on the SST connector in the MST topology state. So, let's add some simple helpers for doing that and hook them up in various drivers. v2: * Use intel_dp_mst_source_support() to check for MST support in i915, fixes CI failures Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-14-lyude@redhat.com --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 7 +++ drivers/gpu/drm/display/drm_dp_mst_topology.c | 59 +++++++++++++++++++ drivers/gpu/drm/i915/display/intel_dp.c | 9 +++ drivers/gpu/drm/nouveau/dispnv50/disp.c | 2 +- drivers/gpu/drm/nouveau/dispnv50/disp.h | 2 + drivers/gpu/drm/nouveau/nouveau_connector.c | 14 +++++ include/drm/display/drm_dp_mst_helper.h | 2 + 7 files changed, 94 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index c97a4d759b94..789748739d79 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6291,10 +6291,17 @@ amdgpu_dm_connector_atomic_check(struct drm_connector *conn, drm_atomic_get_old_connector_state(state, conn); struct drm_crtc *crtc = new_con_state->crtc; struct drm_crtc_state *new_crtc_state; + struct amdgpu_dm_connector *aconn = to_amdgpu_dm_connector(conn); int ret; trace_amdgpu_dm_connector_atomic_check(new_con_state); + if (conn->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { + ret = drm_dp_mst_root_conn_atomic_check(new_con_state, &aconn->mst_mgr); + if (ret < 0) + return ret; + } + if (!crtc) return 0; diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index 2f7c43f88d74..97e8f8a83ed4 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -4597,6 +4597,65 @@ void drm_dp_mst_atomic_wait_for_dependencies(struct drm_atomic_state *state) } EXPORT_SYMBOL(drm_dp_mst_atomic_wait_for_dependencies); +/** + * drm_dp_mst_root_conn_atomic_check() - Serialize CRTC commits on MST-capable connectors operating + * in SST mode + * @new_conn_state: The new connector state of the &drm_connector + * @mgr: The MST topology manager for the &drm_connector + * + * Since MST uses fake &drm_encoder structs, the generic atomic modesetting code isn't able to + * serialize non-blocking commits happening on the real DP connector of an MST topology switching + * into/away from MST mode - as the CRTC on the real DP connector and the CRTCs on the connector's + * MST topology will never share the same &drm_encoder. + * + * This function takes care of this serialization issue, by checking a root MST connector's atomic + * state to determine if it is about to have a modeset - and then pulling in the MST topology state + * if so, along with adding any relevant CRTCs to &drm_dp_mst_topology_state.pending_crtc_mask. + * + * Drivers implementing MST must call this function from the + * &drm_connector_helper_funcs.atomic_check hook of any physical DP &drm_connector capable of + * driving MST sinks. + * + * Returns: + * 0 on success, negative error code otherwise + */ +int drm_dp_mst_root_conn_atomic_check(struct drm_connector_state *new_conn_state, + struct drm_dp_mst_topology_mgr *mgr) +{ + struct drm_atomic_state *state = new_conn_state->state; + struct drm_connector_state *old_conn_state = + drm_atomic_get_old_connector_state(state, new_conn_state->connector); + struct drm_crtc_state *crtc_state; + struct drm_dp_mst_topology_state *mst_state = NULL; + + if (new_conn_state->crtc) { + crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); + if (crtc_state && drm_atomic_crtc_needs_modeset(crtc_state)) { + mst_state = drm_atomic_get_mst_topology_state(state, mgr); + if (IS_ERR(mst_state)) + return PTR_ERR(mst_state); + + mst_state->pending_crtc_mask |= drm_crtc_mask(new_conn_state->crtc); + } + } + + if (old_conn_state->crtc) { + crtc_state = drm_atomic_get_new_crtc_state(state, old_conn_state->crtc); + if (crtc_state && drm_atomic_crtc_needs_modeset(crtc_state)) { + if (!mst_state) { + mst_state = drm_atomic_get_mst_topology_state(state, mgr); + if (IS_ERR(mst_state)) + return PTR_ERR(mst_state); + } + + mst_state->pending_crtc_mask |= drm_crtc_mask(old_conn_state->crtc); + } + } + + return 0; +} +EXPORT_SYMBOL(drm_dp_mst_root_conn_atomic_check); + /** * drm_dp_mst_update_slots() - updates the slot info depending on the DP ecoding format * @mst_state: mst_state to update diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 32292c0be2bd..a4e113253df3 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -4992,12 +4992,21 @@ static int intel_dp_connector_atomic_check(struct drm_connector *conn, { struct drm_i915_private *dev_priv = to_i915(conn->dev); struct intel_atomic_state *state = to_intel_atomic_state(_state); + struct drm_connector_state *conn_state = drm_atomic_get_new_connector_state(_state, conn); + struct intel_connector *intel_conn = to_intel_connector(conn); + struct intel_dp *intel_dp = enc_to_intel_dp(intel_conn->encoder); int ret; ret = intel_digital_connector_atomic_check(conn, &state->base); if (ret) return ret; + if (intel_dp_mst_source_support(intel_dp)) { + ret = drm_dp_mst_root_conn_atomic_check(conn_state, &intel_dp->mst_mgr); + if (ret) + return ret; + } + /* * We don't enable port sync on BDW due to missing w/as and * due to not having adjusted the modeset sequence appropriately. diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index 24807aa9da5f..7e9a0b50bb42 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -1813,7 +1813,7 @@ nv50_sor_func = { .destroy = nv50_sor_destroy, }; -static bool nv50_has_mst(struct nouveau_drm *drm) +bool nv50_has_mst(struct nouveau_drm *drm) { struct nvkm_bios *bios = nvxx_bios(&drm->client.device); u32 data; diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.h b/drivers/gpu/drm/nouveau/dispnv50/disp.h index 38dec11e7dda..9d66c9c726c3 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.h +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.h @@ -106,6 +106,8 @@ void nv50_dmac_destroy(struct nv50_dmac *); */ struct nouveau_encoder *nv50_real_outp(struct drm_encoder *encoder); +bool nv50_has_mst(struct nouveau_drm *drm); + u32 *evo_wait(struct nv50_dmac *, int nr); void evo_kick(u32 *, struct nv50_dmac *); diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c index b8ee2173ca8f..1991bbb1d05c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -1106,11 +1106,25 @@ nouveau_connector_best_encoder(struct drm_connector *connector) return NULL; } +static int +nouveau_connector_atomic_check(struct drm_connector *connector, struct drm_atomic_state *state) +{ + struct nouveau_connector *nv_conn = nouveau_connector(connector); + struct drm_connector_state *conn_state = + drm_atomic_get_new_connector_state(state, connector); + + if (!nv_conn->dp_encoder || !nv50_has_mst(nouveau_drm(connector->dev))) + return 0; + + return drm_dp_mst_root_conn_atomic_check(conn_state, &nv_conn->dp_encoder->dp.mstm->mgr); +} + static const struct drm_connector_helper_funcs nouveau_connector_helper_funcs = { .get_modes = nouveau_connector_get_modes, .mode_valid = nouveau_connector_mode_valid, .best_encoder = nouveau_connector_best_encoder, + .atomic_check = nouveau_connector_atomic_check, }; static const struct drm_connector_funcs diff --git a/include/drm/display/drm_dp_mst_helper.h b/include/drm/display/drm_dp_mst_helper.h index 0ef7d0e6cf0c..b9c361b242ea 100644 --- a/include/drm/display/drm_dp_mst_helper.h +++ b/include/drm/display/drm_dp_mst_helper.h @@ -911,6 +911,8 @@ int drm_dp_send_query_stream_enc_status(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, struct drm_dp_query_stream_enc_status_ack_reply *status); int __must_check drm_dp_mst_atomic_check(struct drm_atomic_state *state); +int __must_check drm_dp_mst_root_conn_atomic_check(struct drm_connector_state *new_conn_state, + struct drm_dp_mst_topology_mgr *mgr); void drm_dp_mst_get_port_malloc(struct drm_dp_mst_port *port); void drm_dp_mst_put_port_malloc(struct drm_dp_mst_port *port); From 2482fceed27b6951287e92e9f733533a657c2923 Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:43 -0400 Subject: [PATCH 029/111] drm/display/dp_mst: Drop all ports from topology on CSNs before queueing link address work MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We want to start cutting down on all of the places that we use port validation, so that ports may be removed from the topology as quickly as possible to minimize the number of errors we run into as a result of being out of sync with the current topology status. This isn't a very typical scenario and I don't think I've ever even run into it - but since the next commit is going to make some changes to payload updates depending on their hotplug status I think it's a probably good idea to take precautions. Let's do this with CSNs by moving some code around so that we only queue link address probing work at the end of handling all CSNs - allowing us to make sure we drop as many topology references as we can beforehand. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-15-lyude@redhat.com --- drivers/gpu/drm/display/drm_dp_mst_topology.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index 97e8f8a83ed4..a5460cadf2c8 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -2509,7 +2509,7 @@ fail_put: return ret; } -static void +static int drm_dp_mst_handle_conn_stat(struct drm_dp_mst_branch *mstb, struct drm_dp_connection_status_notify *conn_stat) { @@ -2522,7 +2522,7 @@ drm_dp_mst_handle_conn_stat(struct drm_dp_mst_branch *mstb, port = drm_dp_get_port(mstb, conn_stat->port_number); if (!port) - return; + return 0; if (port->connector) { if (!port->input && conn_stat->input_port) { @@ -2575,8 +2575,7 @@ drm_dp_mst_handle_conn_stat(struct drm_dp_mst_branch *mstb, out: drm_dp_mst_topology_put_port(port); - if (dowork) - queue_work(system_long_wq, &mstb->mgr->work); + return dowork; } static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device(struct drm_dp_mst_topology_mgr *mgr, @@ -4060,7 +4059,7 @@ drm_dp_mst_process_up_req(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_branch *mstb = NULL; struct drm_dp_sideband_msg_req_body *msg = &up_req->msg; struct drm_dp_sideband_msg_hdr *hdr = &up_req->hdr; - bool hotplug = false; + bool hotplug = false, dowork = false; if (hdr->broadcast) { const u8 *guid = NULL; @@ -4083,11 +4082,14 @@ drm_dp_mst_process_up_req(struct drm_dp_mst_topology_mgr *mgr, /* TODO: Add missing handler for DP_RESOURCE_STATUS_NOTIFY events */ if (msg->req_type == DP_CONNECTION_STATUS_NOTIFY) { - drm_dp_mst_handle_conn_stat(mstb, &msg->u.conn_stat); + dowork = drm_dp_mst_handle_conn_stat(mstb, &msg->u.conn_stat); hotplug = true; } drm_dp_mst_topology_put_mstb(mstb); + + if (dowork) + queue_work(system_long_wq, &mgr->work); return hotplug; } From 6366fc70deb9aaf1db4a46916af14fa3c5a115ab Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:44 -0400 Subject: [PATCH 030/111] drm/display/dp_mst: Maintain time slot allocations when deleting payloads MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently, we set drm_dp_atomic_payload->time_slots to 0 in order to indicate that we're about to delete a payload in the current atomic state. Since we're going to be dropping all of the legacy code for handling the payload table however, we need to be able to ensure that we still keep track of the current time slot allocations for each payload so we can reuse this info when asking the root MST hub to delete payloads. We'll also be using it to recalculate the start slots of each VC. So, let's keep track of the intent of a payload in drm_dp_atomic_payload by adding ->delete, which we set whenever we're planning on deleting a payload during the current atomic commit. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-16-lyude@redhat.com --- drivers/gpu/drm/display/drm_dp_mst_topology.c | 14 +++++++------- include/drm/display/drm_dp_mst_helper.h | 5 ++++- 2 files changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index a5460cadf2c8..c4073d733c59 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -4407,7 +4407,7 @@ int drm_dp_atomic_find_time_slots(struct drm_atomic_state *state, * releasing and allocating the same timeslot allocation, * which is an error */ - if (WARN_ON(!prev_slots)) { + if (drm_WARN_ON(mgr->dev, payload->delete)) { drm_err(mgr->dev, "cannot allocate and release time slots on [MST PORT:%p] in the same state\n", port); @@ -4512,10 +4512,10 @@ int drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, } drm_dbg_atomic(mgr->dev, "[MST PORT:%p] TU %d -> 0\n", port, payload->time_slots); - if (payload->time_slots) { + if (!payload->delete) { drm_dp_mst_put_port_malloc(port); - payload->time_slots = 0; payload->pbn = 0; + payload->delete = true; } return 0; @@ -5239,7 +5239,7 @@ drm_dp_mst_duplicate_state(struct drm_private_obj *obj) list_for_each_entry(pos, &old_state->payloads, next) { /* Prune leftover freed timeslot allocations */ - if (!pos->time_slots) + if (pos->delete) continue; payload = kmemdup(pos, sizeof(*payload), GFP_KERNEL); @@ -5271,8 +5271,8 @@ static void drm_dp_mst_destroy_state(struct drm_private_obj *obj, int i; list_for_each_entry_safe(pos, tmp, &mst_state->payloads, next) { - /* We only keep references to ports with non-zero VCPIs */ - if (pos->time_slots) + /* We only keep references to ports with active payloads */ + if (!pos->delete) drm_dp_mst_put_port_malloc(pos->port); kfree(pos); } @@ -5400,7 +5400,7 @@ drm_dp_mst_atomic_check_payload_alloc_limits(struct drm_dp_mst_topology_mgr *mgr list_for_each_entry(payload, &mst_state->payloads, next) { /* Releasing payloads is always OK-even if the port is gone */ - if (!payload->time_slots) { + if (payload->delete) { drm_dbg_atomic(mgr->dev, "[MST PORT:%p] releases all time slots\n", payload->port); continue; diff --git a/include/drm/display/drm_dp_mst_helper.h b/include/drm/display/drm_dp_mst_helper.h index b9c361b242ea..8b847836a0b4 100644 --- a/include/drm/display/drm_dp_mst_helper.h +++ b/include/drm/display/drm_dp_mst_helper.h @@ -560,8 +560,11 @@ struct drm_dp_mst_atomic_payload { int time_slots; /** @pbn: The payload bandwidth for this payload */ int pbn; + + /** @delete: Whether or not we intend to delete this payload during this atomic commit */ + bool delete : 1; /** @dsc_enabled: Whether or not this payload has DSC enabled */ - bool dsc_enabled; + bool dsc_enabled : 1; /** @next: The list node for this payload */ struct list_head next; From 01ad1d9c2888d51f2fb5b5ac88af8bd47d76937e Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:45 -0400 Subject: [PATCH 031/111] drm/radeon: Drop legacy MST support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Right now, radeon is technically the only non-atomic driver still making use of the MST helpers - and thus the final user of all of the legacy MST helpers. Originally I was going to look into seeing if we could move legacy MST into the radeon driver itself, however: * SI and CIK both can use amdgpu, which still supports MST * It currently doesn't work according to my own testing. I'm sure with some troubleshooting we could likely fix it, but that brings me to point #2: * It was never actually enabled by default, and is still marked as experimental in the module parameter description * If people were using it, someone probably would have probably seen a bug report about how it is currently not functional by now. That certainly doesn't appear to be the case, since before getting access to my own hardware I had to go out of my way to try finding someone to help test whether this legacy MST code even works - even amongst AMD employees. * Getting rid of this code and only having atomic versions of the MST helpers to maintain is likely going to be a lot easier in the long run, and will make it a lot easier for others contributing to this code to follow along with what's happening. FWIW - if anyone still wants this code to be in the tree and has a good idea of how to support this without needing to maintain the legacy MST helpers (trying to move them would probably be acceptable), I'm happy to suggestions. But my hope is that we can just drop this code and forget about it. I've already run this idea by Harry Wentland and Alex Deucher a few times as well. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Alex Deucher Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-17-lyude@redhat.com --- drivers/gpu/drm/radeon/Makefile | 2 +- drivers/gpu/drm/radeon/atombios_crtc.c | 11 +- drivers/gpu/drm/radeon/atombios_encoders.c | 59 -- drivers/gpu/drm/radeon/radeon_atombios.c | 2 - drivers/gpu/drm/radeon/radeon_connectors.c | 61 +- drivers/gpu/drm/radeon/radeon_device.c | 1 - drivers/gpu/drm/radeon/radeon_dp_mst.c | 778 --------------------- drivers/gpu/drm/radeon/radeon_drv.c | 4 - drivers/gpu/drm/radeon/radeon_encoders.c | 14 +- drivers/gpu/drm/radeon/radeon_irq_kms.c | 10 +- drivers/gpu/drm/radeon/radeon_mode.h | 40 -- 11 files changed, 7 insertions(+), 975 deletions(-) delete mode 100644 drivers/gpu/drm/radeon/radeon_dp_mst.c diff --git a/drivers/gpu/drm/radeon/Makefile b/drivers/gpu/drm/radeon/Makefile index e3ab3aca1396..bb4e56f2f170 100644 --- a/drivers/gpu/drm/radeon/Makefile +++ b/drivers/gpu/drm/radeon/Makefile @@ -49,7 +49,7 @@ radeon-y += radeon_device.o radeon_asic.o radeon_kms.o \ rv770_smc.o cypress_dpm.o btc_dpm.o sumo_dpm.o sumo_smc.o trinity_dpm.o \ trinity_smc.o ni_dpm.o si_smc.o si_dpm.o kv_smc.o kv_dpm.o ci_smc.o \ ci_dpm.o dce6_afmt.o radeon_vm.o radeon_ucode.o radeon_ib.o \ - radeon_sync.o radeon_audio.o radeon_dp_auxch.o radeon_dp_mst.o + radeon_sync.o radeon_audio.o radeon_dp_auxch.o radeon-$(CONFIG_MMU_NOTIFIER) += radeon_mn.o diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 69f1bc073902..d28d3acb3ba1 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -617,13 +617,6 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, } } - if (radeon_encoder->is_mst_encoder) { - struct radeon_encoder_mst *mst_enc = radeon_encoder->enc_priv; - struct radeon_connector_atom_dig *dig_connector = mst_enc->connector->con_priv; - - dp_clock = dig_connector->dp_clock; - } - /* use recommended ref_div for ss */ if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) { if (radeon_crtc->ss_enabled) { @@ -972,9 +965,7 @@ static bool atombios_crtc_prepare_pll(struct drm_crtc *crtc, struct drm_display_ radeon_crtc->bpc = 8; radeon_crtc->ss_enabled = false; - if (radeon_encoder->is_mst_encoder) { - radeon_dp_mst_prepare_pll(crtc, mode); - } else if ((radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) || + if ((radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) || (radeon_encoder_get_dp_bridge_encoder_id(radeon_crtc->encoder) != ENCODER_OBJECT_ID_NONE)) { struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; struct drm_connector *connector = diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c index c93040e60d04..0eae05dfb385 100644 --- a/drivers/gpu/drm/radeon/atombios_encoders.c +++ b/drivers/gpu/drm/radeon/atombios_encoders.c @@ -667,15 +667,7 @@ atombios_get_encoder_mode(struct drm_encoder *encoder) struct drm_connector *connector; struct radeon_connector *radeon_connector; struct radeon_connector_atom_dig *dig_connector; - struct radeon_encoder_atom_dig *dig_enc; - if (radeon_encoder_is_digital(encoder)) { - dig_enc = radeon_encoder->enc_priv; - if (dig_enc->active_mst_links) - return ATOM_ENCODER_MODE_DP_MST; - } - if (radeon_encoder->is_mst_encoder || radeon_encoder->offset) - return ATOM_ENCODER_MODE_DP_MST; /* dp bridges are always DP */ if (radeon_encoder_get_dp_bridge_encoder_id(encoder) != ENCODER_OBJECT_ID_NONE) return ATOM_ENCODER_MODE_DP; @@ -1723,10 +1715,6 @@ radeon_atom_encoder_dpms_dig(struct drm_encoder *encoder, int mode) case DRM_MODE_DPMS_SUSPEND: case DRM_MODE_DPMS_OFF: - /* don't power off encoders with active MST links */ - if (dig->active_mst_links) - return; - if (ASIC_IS_DCE4(rdev)) { if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(encoder)) && connector) atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_OFF, 0); @@ -1992,53 +1980,6 @@ atombios_set_encoder_crtc_source(struct drm_encoder *encoder) radeon_atombios_encoder_crtc_scratch_regs(encoder, radeon_crtc->crtc_id); } -void -atombios_set_mst_encoder_crtc_source(struct drm_encoder *encoder, int fe) -{ - struct drm_device *dev = encoder->dev; - struct radeon_device *rdev = dev->dev_private; - struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc); - int index = GetIndexIntoMasterTable(COMMAND, SelectCRTC_Source); - uint8_t frev, crev; - union crtc_source_param args; - - memset(&args, 0, sizeof(args)); - - if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev)) - return; - - if (frev != 1 && crev != 2) - DRM_ERROR("Unknown table for MST %d, %d\n", frev, crev); - - args.v2.ucCRTC = radeon_crtc->crtc_id; - args.v2.ucEncodeMode = ATOM_ENCODER_MODE_DP_MST; - - switch (fe) { - case 0: - args.v2.ucEncoderID = ASIC_INT_DIG1_ENCODER_ID; - break; - case 1: - args.v2.ucEncoderID = ASIC_INT_DIG2_ENCODER_ID; - break; - case 2: - args.v2.ucEncoderID = ASIC_INT_DIG3_ENCODER_ID; - break; - case 3: - args.v2.ucEncoderID = ASIC_INT_DIG4_ENCODER_ID; - break; - case 4: - args.v2.ucEncoderID = ASIC_INT_DIG5_ENCODER_ID; - break; - case 5: - args.v2.ucEncoderID = ASIC_INT_DIG6_ENCODER_ID; - break; - case 6: - args.v2.ucEncoderID = ASIC_INT_DIG7_ENCODER_ID; - break; - } - atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); -} - static void atombios_apply_encoder_quirks(struct drm_encoder *encoder, struct drm_display_mode *mode) diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 28c4413f4dc8..204127bad89c 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -826,8 +826,6 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev) } radeon_link_encoder_connector(dev); - - radeon_setup_mst_connector(dev); return true; } diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c index 58db79921cd3..f7431d224604 100644 --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -37,33 +37,12 @@ #include #include -static int radeon_dp_handle_hpd(struct drm_connector *connector) -{ - struct radeon_connector *radeon_connector = to_radeon_connector(connector); - int ret; - - ret = radeon_dp_mst_check_status(radeon_connector); - if (ret == -EINVAL) - return 1; - return 0; -} void radeon_connector_hotplug(struct drm_connector *connector) { struct drm_device *dev = connector->dev; struct radeon_device *rdev = dev->dev_private; struct radeon_connector *radeon_connector = to_radeon_connector(connector); - if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { - struct radeon_connector_atom_dig *dig_connector = - radeon_connector->con_priv; - - if (radeon_connector->is_mst_connector) - return; - if (dig_connector->is_mst) { - radeon_dp_handle_hpd(connector); - return; - } - } /* bail if the connector does not have hpd pin, e.g., * VGA, TV, etc. */ @@ -1664,9 +1643,6 @@ radeon_dp_detect(struct drm_connector *connector, bool force) struct drm_encoder *encoder = radeon_best_single_encoder(connector); int r; - if (radeon_dig_connector->is_mst) - return connector_status_disconnected; - if (!drm_kms_helper_is_poll_worker()) { r = pm_runtime_get_sync(connector->dev->dev); if (r < 0) { @@ -1729,21 +1705,12 @@ radeon_dp_detect(struct drm_connector *connector, bool force) radeon_dig_connector->dp_sink_type = radeon_dp_getsinktype(radeon_connector); if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) { ret = connector_status_connected; - if (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) { + if (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) radeon_dp_getdpcd(radeon_connector); - r = radeon_dp_mst_probe(radeon_connector); - if (r == 1) - ret = connector_status_disconnected; - } } else { if (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) { - if (radeon_dp_getdpcd(radeon_connector)) { - r = radeon_dp_mst_probe(radeon_connector); - if (r == 1) - ret = connector_status_disconnected; - else - ret = connector_status_connected; - } + if (radeon_dp_getdpcd(radeon_connector)) + ret = connector_status_connected; } else { /* try non-aux ddc (DP to DVI/HDMI/etc. adapter) */ if (radeon_ddc_probe(radeon_connector, false)) @@ -2561,25 +2528,3 @@ radeon_add_legacy_connector(struct drm_device *dev, connector->display_info.subpixel_order = subpixel_order; drm_connector_register(connector); } - -void radeon_setup_mst_connector(struct drm_device *dev) -{ - struct radeon_device *rdev = dev->dev_private; - struct drm_connector *connector; - struct radeon_connector *radeon_connector; - - if (!ASIC_IS_DCE5(rdev)) - return; - - if (radeon_mst == 0) - return; - - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - radeon_connector = to_radeon_connector(connector); - - if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) - continue; - - radeon_dp_mst_init(radeon_connector); - } -} diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 2b12389f841a..a215ff1363cd 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -1438,7 +1438,6 @@ int radeon_device_init(struct radeon_device *rdev, goto failed; radeon_gem_debugfs_init(rdev); - radeon_mst_debugfs_init(rdev); if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) { /* Acceleration not working on AGP card try again diff --git a/drivers/gpu/drm/radeon/radeon_dp_mst.c b/drivers/gpu/drm/radeon/radeon_dp_mst.c deleted file mode 100644 index 54ced1f4ff67..000000000000 --- a/drivers/gpu/drm/radeon/radeon_dp_mst.c +++ /dev/null @@ -1,778 +0,0 @@ -// SPDX-License-Identifier: MIT - -#include -#include -#include -#include - -#include "atom.h" -#include "ni_reg.h" -#include "radeon.h" - -static struct radeon_encoder *radeon_dp_create_fake_mst_encoder(struct radeon_connector *connector); - -static int radeon_atom_set_enc_offset(int id) -{ - static const int offsets[] = { EVERGREEN_CRTC0_REGISTER_OFFSET, - EVERGREEN_CRTC1_REGISTER_OFFSET, - EVERGREEN_CRTC2_REGISTER_OFFSET, - EVERGREEN_CRTC3_REGISTER_OFFSET, - EVERGREEN_CRTC4_REGISTER_OFFSET, - EVERGREEN_CRTC5_REGISTER_OFFSET, - 0x13830 - 0x7030 }; - - return offsets[id]; -} - -static int radeon_dp_mst_set_be_cntl(struct radeon_encoder *primary, - struct radeon_encoder_mst *mst_enc, - enum radeon_hpd_id hpd, bool enable) -{ - struct drm_device *dev = primary->base.dev; - struct radeon_device *rdev = dev->dev_private; - uint32_t reg; - int retries = 0; - uint32_t temp; - - reg = RREG32(NI_DIG_BE_CNTL + primary->offset); - - /* set MST mode */ - reg &= ~NI_DIG_FE_DIG_MODE(7); - reg |= NI_DIG_FE_DIG_MODE(NI_DIG_MODE_DP_MST); - - if (enable) - reg |= NI_DIG_FE_SOURCE_SELECT(1 << mst_enc->fe); - else - reg &= ~NI_DIG_FE_SOURCE_SELECT(1 << mst_enc->fe); - - reg |= NI_DIG_HPD_SELECT(hpd); - DRM_DEBUG_KMS("writing 0x%08x 0x%08x\n", NI_DIG_BE_CNTL + primary->offset, reg); - WREG32(NI_DIG_BE_CNTL + primary->offset, reg); - - if (enable) { - uint32_t offset = radeon_atom_set_enc_offset(mst_enc->fe); - - do { - temp = RREG32(NI_DIG_FE_CNTL + offset); - } while ((temp & NI_DIG_SYMCLK_FE_ON) && retries++ < 10000); - if (retries == 10000) - DRM_ERROR("timed out waiting for FE %d %d\n", primary->offset, mst_enc->fe); - } - return 0; -} - -static int radeon_dp_mst_set_stream_attrib(struct radeon_encoder *primary, - int stream_number, - int fe, - int slots) -{ - struct drm_device *dev = primary->base.dev; - struct radeon_device *rdev = dev->dev_private; - u32 temp, val; - int retries = 0; - int satreg, satidx; - - satreg = stream_number >> 1; - satidx = stream_number & 1; - - temp = RREG32(NI_DP_MSE_SAT0 + satreg + primary->offset); - - val = NI_DP_MSE_SAT_SLOT_COUNT0(slots) | NI_DP_MSE_SAT_SRC0(fe); - - val <<= (16 * satidx); - - temp &= ~(0xffff << (16 * satidx)); - - temp |= val; - - DRM_DEBUG_KMS("writing 0x%08x 0x%08x\n", NI_DP_MSE_SAT0 + satreg + primary->offset, temp); - WREG32(NI_DP_MSE_SAT0 + satreg + primary->offset, temp); - - WREG32(NI_DP_MSE_SAT_UPDATE + primary->offset, 1); - - do { - unsigned value1, value2; - udelay(10); - temp = RREG32(NI_DP_MSE_SAT_UPDATE + primary->offset); - - value1 = temp & NI_DP_MSE_SAT_UPDATE_MASK; - value2 = temp & NI_DP_MSE_16_MTP_KEEPOUT; - - if (!value1 && !value2) - break; - } while (retries++ < 50); - - if (retries == 10000) - DRM_ERROR("timed out waitin for SAT update %d\n", primary->offset); - - /* MTP 16 ? */ - return 0; -} - -static int radeon_dp_mst_update_stream_attribs(struct radeon_connector *mst_conn, - struct radeon_encoder *primary) -{ - struct drm_device *dev = mst_conn->base.dev; - struct stream_attribs new_attribs[6]; - int i; - int idx = 0; - struct radeon_connector *radeon_connector; - struct drm_connector *connector; - - memset(new_attribs, 0, sizeof(new_attribs)); - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - struct radeon_encoder *subenc; - struct radeon_encoder_mst *mst_enc; - - radeon_connector = to_radeon_connector(connector); - if (!radeon_connector->is_mst_connector) - continue; - - if (radeon_connector->mst_port != mst_conn) - continue; - - subenc = radeon_connector->mst_encoder; - mst_enc = subenc->enc_priv; - - if (!mst_enc->enc_active) - continue; - - new_attribs[idx].fe = mst_enc->fe; - new_attribs[idx].slots = drm_dp_mst_get_vcpi_slots(&mst_conn->mst_mgr, mst_enc->port); - idx++; - } - - for (i = 0; i < idx; i++) { - if (new_attribs[i].fe != mst_conn->cur_stream_attribs[i].fe || - new_attribs[i].slots != mst_conn->cur_stream_attribs[i].slots) { - radeon_dp_mst_set_stream_attrib(primary, i, new_attribs[i].fe, new_attribs[i].slots); - mst_conn->cur_stream_attribs[i].fe = new_attribs[i].fe; - mst_conn->cur_stream_attribs[i].slots = new_attribs[i].slots; - } - } - - for (i = idx; i < mst_conn->enabled_attribs; i++) { - radeon_dp_mst_set_stream_attrib(primary, i, 0, 0); - mst_conn->cur_stream_attribs[i].fe = 0; - mst_conn->cur_stream_attribs[i].slots = 0; - } - mst_conn->enabled_attribs = idx; - return 0; -} - -static int radeon_dp_mst_set_vcp_size(struct radeon_encoder *mst, s64 avg_time_slots_per_mtp) -{ - struct drm_device *dev = mst->base.dev; - struct radeon_device *rdev = dev->dev_private; - struct radeon_encoder_mst *mst_enc = mst->enc_priv; - uint32_t val, temp; - uint32_t offset = radeon_atom_set_enc_offset(mst_enc->fe); - int retries = 0; - uint32_t x = drm_fixp2int(avg_time_slots_per_mtp); - uint32_t y = drm_fixp2int_ceil((avg_time_slots_per_mtp - x) << 26); - - val = NI_DP_MSE_RATE_X(x) | NI_DP_MSE_RATE_Y(y); - - WREG32(NI_DP_MSE_RATE_CNTL + offset, val); - - do { - temp = RREG32(NI_DP_MSE_RATE_UPDATE + offset); - udelay(10); - } while ((temp & 0x1) && (retries++ < 10000)); - - if (retries >= 10000) - DRM_ERROR("timed out wait for rate cntl %d\n", mst_enc->fe); - return 0; -} - -static int radeon_dp_mst_get_ddc_modes(struct drm_connector *connector) -{ - struct radeon_connector *radeon_connector = to_radeon_connector(connector); - struct radeon_connector *master = radeon_connector->mst_port; - struct edid *edid; - int ret = 0; - - edid = drm_dp_mst_get_edid(connector, &master->mst_mgr, radeon_connector->port); - radeon_connector->edid = edid; - DRM_DEBUG_KMS("edid retrieved %p\n", edid); - if (radeon_connector->edid) { - drm_connector_update_edid_property(&radeon_connector->base, radeon_connector->edid); - ret = drm_add_edid_modes(&radeon_connector->base, radeon_connector->edid); - return ret; - } - drm_connector_update_edid_property(&radeon_connector->base, NULL); - - return ret; -} - -static int radeon_dp_mst_get_modes(struct drm_connector *connector) -{ - return radeon_dp_mst_get_ddc_modes(connector); -} - -static enum drm_mode_status -radeon_dp_mst_mode_valid(struct drm_connector *connector, - struct drm_display_mode *mode) -{ - /* TODO - validate mode against available PBN for link */ - if (mode->clock < 10000) - return MODE_CLOCK_LOW; - - if (mode->flags & DRM_MODE_FLAG_DBLCLK) - return MODE_H_ILLEGAL; - - return MODE_OK; -} - -static struct -drm_encoder *radeon_mst_best_encoder(struct drm_connector *connector) -{ - struct radeon_connector *radeon_connector = to_radeon_connector(connector); - - return &radeon_connector->mst_encoder->base; -} - -static int -radeon_dp_mst_detect(struct drm_connector *connector, - struct drm_modeset_acquire_ctx *ctx, - bool force) -{ - struct radeon_connector *radeon_connector = - to_radeon_connector(connector); - struct radeon_connector *master = radeon_connector->mst_port; - - if (drm_connector_is_unregistered(connector)) - return connector_status_disconnected; - - return drm_dp_mst_detect_port(connector, ctx, &master->mst_mgr, - radeon_connector->port); -} - -static const struct drm_connector_helper_funcs radeon_dp_mst_connector_helper_funcs = { - .get_modes = radeon_dp_mst_get_modes, - .mode_valid = radeon_dp_mst_mode_valid, - .best_encoder = radeon_mst_best_encoder, - .detect_ctx = radeon_dp_mst_detect, -}; - -static void -radeon_dp_mst_connector_destroy(struct drm_connector *connector) -{ - struct radeon_connector *radeon_connector = to_radeon_connector(connector); - struct radeon_encoder *radeon_encoder = radeon_connector->mst_encoder; - - drm_encoder_cleanup(&radeon_encoder->base); - kfree(radeon_encoder); - drm_connector_cleanup(connector); - kfree(radeon_connector); -} - -static const struct drm_connector_funcs radeon_dp_mst_connector_funcs = { - .dpms = drm_helper_connector_dpms, - .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = radeon_dp_mst_connector_destroy, -}; - -static struct drm_connector *radeon_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_port *port, - const char *pathprop) -{ - struct radeon_connector *master = container_of(mgr, struct radeon_connector, mst_mgr); - struct drm_device *dev = master->base.dev; - struct radeon_connector *radeon_connector; - struct drm_connector *connector; - - radeon_connector = kzalloc(sizeof(*radeon_connector), GFP_KERNEL); - if (!radeon_connector) - return NULL; - - radeon_connector->is_mst_connector = true; - connector = &radeon_connector->base; - radeon_connector->port = port; - radeon_connector->mst_port = master; - DRM_DEBUG_KMS("\n"); - - drm_connector_init(dev, connector, &radeon_dp_mst_connector_funcs, DRM_MODE_CONNECTOR_DisplayPort); - drm_connector_helper_add(connector, &radeon_dp_mst_connector_helper_funcs); - radeon_connector->mst_encoder = radeon_dp_create_fake_mst_encoder(master); - - drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0); - drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0); - drm_connector_set_path_property(connector, pathprop); - - return connector; -} - -static const struct drm_dp_mst_topology_cbs mst_cbs = { - .add_connector = radeon_dp_add_mst_connector, -}; - -static struct -radeon_connector *radeon_mst_find_connector(struct drm_encoder *encoder) -{ - struct drm_device *dev = encoder->dev; - struct drm_connector *connector; - - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - struct radeon_connector *radeon_connector = to_radeon_connector(connector); - if (!connector->encoder) - continue; - if (!radeon_connector->is_mst_connector) - continue; - - DRM_DEBUG_KMS("checking %p vs %p\n", connector->encoder, encoder); - if (connector->encoder == encoder) - return radeon_connector; - } - return NULL; -} - -void radeon_dp_mst_prepare_pll(struct drm_crtc *crtc, struct drm_display_mode *mode) -{ - struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); - struct drm_device *dev = crtc->dev; - struct radeon_device *rdev = dev->dev_private; - struct radeon_encoder *radeon_encoder = to_radeon_encoder(radeon_crtc->encoder); - struct radeon_encoder_mst *mst_enc = radeon_encoder->enc_priv; - struct radeon_connector *radeon_connector = radeon_mst_find_connector(&radeon_encoder->base); - int dp_clock; - struct radeon_connector_atom_dig *dig_connector = mst_enc->connector->con_priv; - - if (radeon_connector) { - radeon_connector->pixelclock_for_modeset = mode->clock; - if (radeon_connector->base.display_info.bpc) - radeon_crtc->bpc = radeon_connector->base.display_info.bpc; - else - radeon_crtc->bpc = 8; - } - - DRM_DEBUG_KMS("dp_clock %p %d\n", dig_connector, dig_connector->dp_clock); - dp_clock = dig_connector->dp_clock; - radeon_crtc->ss_enabled = - radeon_atombios_get_asic_ss_info(rdev, &radeon_crtc->ss, - ASIC_INTERNAL_SS_ON_DP, - dp_clock); -} - -static void -radeon_mst_encoder_dpms(struct drm_encoder *encoder, int mode) -{ - struct drm_device *dev = encoder->dev; - struct radeon_device *rdev = dev->dev_private; - struct radeon_encoder *radeon_encoder, *primary; - struct radeon_encoder_mst *mst_enc; - struct radeon_encoder_atom_dig *dig_enc; - struct radeon_connector *radeon_connector; - struct drm_crtc *crtc; - struct radeon_crtc *radeon_crtc; - int slots; - s64 fixed_pbn, fixed_pbn_per_slot, avg_time_slots_per_mtp; - if (!ASIC_IS_DCE5(rdev)) { - DRM_ERROR("got mst dpms on non-DCE5\n"); - return; - } - - radeon_connector = radeon_mst_find_connector(encoder); - if (!radeon_connector) - return; - - radeon_encoder = to_radeon_encoder(encoder); - - mst_enc = radeon_encoder->enc_priv; - - primary = mst_enc->primary; - - dig_enc = primary->enc_priv; - - crtc = encoder->crtc; - DRM_DEBUG_KMS("got connector %d\n", dig_enc->active_mst_links); - - switch (mode) { - case DRM_MODE_DPMS_ON: - dig_enc->active_mst_links++; - - radeon_crtc = to_radeon_crtc(crtc); - - if (dig_enc->active_mst_links == 1) { - mst_enc->fe = dig_enc->dig_encoder; - mst_enc->fe_from_be = true; - atombios_set_mst_encoder_crtc_source(encoder, mst_enc->fe); - - atombios_dig_encoder_setup(&primary->base, ATOM_ENCODER_CMD_SETUP, 0); - atombios_dig_transmitter_setup2(&primary->base, ATOM_TRANSMITTER_ACTION_ENABLE, - 0, 0, dig_enc->dig_encoder); - - if (radeon_dp_needs_link_train(mst_enc->connector) || - dig_enc->active_mst_links == 1) { - radeon_dp_link_train(&primary->base, &mst_enc->connector->base); - } - - } else { - mst_enc->fe = radeon_atom_pick_dig_encoder(encoder, radeon_crtc->crtc_id); - if (mst_enc->fe == -1) - DRM_ERROR("failed to get frontend for dig encoder\n"); - mst_enc->fe_from_be = false; - atombios_set_mst_encoder_crtc_source(encoder, mst_enc->fe); - } - - DRM_DEBUG_KMS("dig encoder is %d %d %d\n", dig_enc->dig_encoder, - dig_enc->linkb, radeon_crtc->crtc_id); - - slots = drm_dp_find_vcpi_slots(&radeon_connector->mst_port->mst_mgr, - mst_enc->pbn); - drm_dp_mst_allocate_vcpi(&radeon_connector->mst_port->mst_mgr, - radeon_connector->port, - mst_enc->pbn, slots); - drm_dp_update_payload_part1(&radeon_connector->mst_port->mst_mgr, 1); - - radeon_dp_mst_set_be_cntl(primary, mst_enc, - radeon_connector->mst_port->hpd.hpd, true); - - mst_enc->enc_active = true; - radeon_dp_mst_update_stream_attribs(radeon_connector->mst_port, primary); - - fixed_pbn = drm_int2fixp(mst_enc->pbn); - fixed_pbn_per_slot = drm_int2fixp(radeon_connector->mst_port->mst_mgr.pbn_div); - avg_time_slots_per_mtp = drm_fixp_div(fixed_pbn, fixed_pbn_per_slot); - radeon_dp_mst_set_vcp_size(radeon_encoder, avg_time_slots_per_mtp); - - atombios_dig_encoder_setup2(&primary->base, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0, - mst_enc->fe); - drm_dp_check_act_status(&radeon_connector->mst_port->mst_mgr); - - drm_dp_update_payload_part2(&radeon_connector->mst_port->mst_mgr); - - break; - case DRM_MODE_DPMS_STANDBY: - case DRM_MODE_DPMS_SUSPEND: - case DRM_MODE_DPMS_OFF: - DRM_ERROR("DPMS OFF %d\n", dig_enc->active_mst_links); - - if (!mst_enc->enc_active) - return; - - drm_dp_mst_reset_vcpi_slots(&radeon_connector->mst_port->mst_mgr, mst_enc->port); - drm_dp_update_payload_part1(&radeon_connector->mst_port->mst_mgr, 1); - - drm_dp_check_act_status(&radeon_connector->mst_port->mst_mgr); - /* and this can also fail */ - drm_dp_update_payload_part2(&radeon_connector->mst_port->mst_mgr); - - drm_dp_mst_deallocate_vcpi(&radeon_connector->mst_port->mst_mgr, mst_enc->port); - - mst_enc->enc_active = false; - radeon_dp_mst_update_stream_attribs(radeon_connector->mst_port, primary); - - radeon_dp_mst_set_be_cntl(primary, mst_enc, - radeon_connector->mst_port->hpd.hpd, false); - atombios_dig_encoder_setup2(&primary->base, ATOM_ENCODER_CMD_DP_VIDEO_OFF, 0, - mst_enc->fe); - - if (!mst_enc->fe_from_be) - radeon_atom_release_dig_encoder(rdev, mst_enc->fe); - - mst_enc->fe_from_be = false; - dig_enc->active_mst_links--; - if (dig_enc->active_mst_links == 0) { - /* drop link */ - } - - break; - } - -} - -static bool radeon_mst_mode_fixup(struct drm_encoder *encoder, - const struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) -{ - struct radeon_encoder_mst *mst_enc; - struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); - struct radeon_connector_atom_dig *dig_connector; - int bpp = 24; - - mst_enc = radeon_encoder->enc_priv; - - mst_enc->pbn = drm_dp_calc_pbn_mode(adjusted_mode->clock, bpp, false); - - mst_enc->primary->active_device = mst_enc->primary->devices & mst_enc->connector->devices; - DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n", - mst_enc->primary->active_device, mst_enc->primary->devices, - mst_enc->connector->devices, mst_enc->primary->base.encoder_type); - - - drm_mode_set_crtcinfo(adjusted_mode, 0); - dig_connector = mst_enc->connector->con_priv; - dig_connector->dp_lane_count = drm_dp_max_lane_count(dig_connector->dpcd); - dig_connector->dp_clock = drm_dp_max_link_rate(dig_connector->dpcd); - DRM_DEBUG_KMS("dig clock %p %d %d\n", dig_connector, - dig_connector->dp_lane_count, dig_connector->dp_clock); - return true; -} - -static void radeon_mst_encoder_prepare(struct drm_encoder *encoder) -{ - struct radeon_connector *radeon_connector; - struct radeon_encoder *radeon_encoder, *primary; - struct radeon_encoder_mst *mst_enc; - struct radeon_encoder_atom_dig *dig_enc; - - radeon_connector = radeon_mst_find_connector(encoder); - if (!radeon_connector) { - DRM_DEBUG_KMS("failed to find connector %p\n", encoder); - return; - } - radeon_encoder = to_radeon_encoder(encoder); - - radeon_mst_encoder_dpms(encoder, DRM_MODE_DPMS_OFF); - - mst_enc = radeon_encoder->enc_priv; - - primary = mst_enc->primary; - - dig_enc = primary->enc_priv; - - mst_enc->port = radeon_connector->port; - - if (dig_enc->dig_encoder == -1) { - dig_enc->dig_encoder = radeon_atom_pick_dig_encoder(&primary->base, -1); - primary->offset = radeon_atom_set_enc_offset(dig_enc->dig_encoder); - atombios_set_mst_encoder_crtc_source(encoder, dig_enc->dig_encoder); - - - } - DRM_DEBUG_KMS("%d %d\n", dig_enc->dig_encoder, primary->offset); -} - -static void -radeon_mst_encoder_mode_set(struct drm_encoder *encoder, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) -{ - DRM_DEBUG_KMS("\n"); -} - -static void radeon_mst_encoder_commit(struct drm_encoder *encoder) -{ - radeon_mst_encoder_dpms(encoder, DRM_MODE_DPMS_ON); - DRM_DEBUG_KMS("\n"); -} - -static const struct drm_encoder_helper_funcs radeon_mst_helper_funcs = { - .dpms = radeon_mst_encoder_dpms, - .mode_fixup = radeon_mst_mode_fixup, - .prepare = radeon_mst_encoder_prepare, - .mode_set = radeon_mst_encoder_mode_set, - .commit = radeon_mst_encoder_commit, -}; - -static void radeon_dp_mst_encoder_destroy(struct drm_encoder *encoder) -{ - drm_encoder_cleanup(encoder); - kfree(encoder); -} - -static const struct drm_encoder_funcs radeon_dp_mst_enc_funcs = { - .destroy = radeon_dp_mst_encoder_destroy, -}; - -static struct radeon_encoder * -radeon_dp_create_fake_mst_encoder(struct radeon_connector *connector) -{ - struct drm_device *dev = connector->base.dev; - struct radeon_device *rdev = dev->dev_private; - struct radeon_encoder *radeon_encoder; - struct radeon_encoder_mst *mst_enc; - struct drm_encoder *encoder; - const struct drm_connector_helper_funcs *connector_funcs = connector->base.helper_private; - struct drm_encoder *enc_master = connector_funcs->best_encoder(&connector->base); - - DRM_DEBUG_KMS("enc master is %p\n", enc_master); - radeon_encoder = kzalloc(sizeof(*radeon_encoder), GFP_KERNEL); - if (!radeon_encoder) - return NULL; - - radeon_encoder->enc_priv = kzalloc(sizeof(*mst_enc), GFP_KERNEL); - if (!radeon_encoder->enc_priv) { - kfree(radeon_encoder); - return NULL; - } - encoder = &radeon_encoder->base; - switch (rdev->num_crtc) { - case 1: - encoder->possible_crtcs = 0x1; - break; - case 2: - default: - encoder->possible_crtcs = 0x3; - break; - case 4: - encoder->possible_crtcs = 0xf; - break; - case 6: - encoder->possible_crtcs = 0x3f; - break; - } - - drm_encoder_init(dev, &radeon_encoder->base, &radeon_dp_mst_enc_funcs, - DRM_MODE_ENCODER_DPMST, NULL); - drm_encoder_helper_add(encoder, &radeon_mst_helper_funcs); - - mst_enc = radeon_encoder->enc_priv; - mst_enc->connector = connector; - mst_enc->primary = to_radeon_encoder(enc_master); - radeon_encoder->is_mst_encoder = true; - return radeon_encoder; -} - -int -radeon_dp_mst_init(struct radeon_connector *radeon_connector) -{ - struct drm_device *dev = radeon_connector->base.dev; - int max_link_rate; - - if (!radeon_connector->ddc_bus->has_aux) - return 0; - - if (radeon_connector_is_dp12_capable(&radeon_connector->base)) - max_link_rate = 0x14; - else - max_link_rate = 0x0a; - - radeon_connector->mst_mgr.cbs = &mst_cbs; - return drm_dp_mst_topology_mgr_init(&radeon_connector->mst_mgr, dev, - &radeon_connector->ddc_bus->aux, 16, 6, - 4, drm_dp_bw_code_to_link_rate(max_link_rate), - radeon_connector->base.base.id); -} - -int -radeon_dp_mst_probe(struct radeon_connector *radeon_connector) -{ - struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv; - struct drm_device *dev = radeon_connector->base.dev; - struct radeon_device *rdev = dev->dev_private; - int ret; - u8 msg[1]; - - if (!radeon_mst) - return 0; - - if (!ASIC_IS_DCE5(rdev)) - return 0; - - if (dig_connector->dpcd[DP_DPCD_REV] < 0x12) - return 0; - - ret = drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, DP_MSTM_CAP, msg, - 1); - if (ret) { - if (msg[0] & DP_MST_CAP) { - DRM_DEBUG_KMS("Sink is MST capable\n"); - dig_connector->is_mst = true; - } else { - DRM_DEBUG_KMS("Sink is not MST capable\n"); - dig_connector->is_mst = false; - } - - } - drm_dp_mst_topology_mgr_set_mst(&radeon_connector->mst_mgr, - dig_connector->is_mst); - return dig_connector->is_mst; -} - -int -radeon_dp_mst_check_status(struct radeon_connector *radeon_connector) -{ - struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv; - int retry; - - if (dig_connector->is_mst) { - u8 esi[16] = { 0 }; - int dret; - int ret = 0; - bool handled; - - dret = drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, - DP_SINK_COUNT_ESI, esi, 8); -go_again: - if (dret == 8) { - DRM_DEBUG_KMS("got esi %3ph\n", esi); - ret = drm_dp_mst_hpd_irq(&radeon_connector->mst_mgr, esi, &handled); - - if (handled) { - for (retry = 0; retry < 3; retry++) { - int wret; - wret = drm_dp_dpcd_write(&radeon_connector->ddc_bus->aux, - DP_SINK_COUNT_ESI + 1, &esi[1], 3); - if (wret == 3) - break; - } - - dret = drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, - DP_SINK_COUNT_ESI, esi, 8); - if (dret == 8) { - DRM_DEBUG_KMS("got esi2 %3ph\n", esi); - goto go_again; - } - } else - ret = 0; - - return ret; - } else { - DRM_DEBUG_KMS("failed to get ESI - device may have failed %d\n", ret); - dig_connector->is_mst = false; - drm_dp_mst_topology_mgr_set_mst(&radeon_connector->mst_mgr, - dig_connector->is_mst); - /* send a hotplug event */ - } - } - return -EINVAL; -} - -#if defined(CONFIG_DEBUG_FS) - -static int radeon_debugfs_mst_info_show(struct seq_file *m, void *unused) -{ - struct radeon_device *rdev = (struct radeon_device *)m->private; - struct drm_device *dev = rdev->ddev; - struct drm_connector *connector; - struct radeon_connector *radeon_connector; - struct radeon_connector_atom_dig *dig_connector; - int i; - - drm_modeset_lock_all(dev); - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) - continue; - - radeon_connector = to_radeon_connector(connector); - dig_connector = radeon_connector->con_priv; - if (radeon_connector->is_mst_connector) - continue; - if (!dig_connector->is_mst) - continue; - drm_dp_mst_dump_topology(m, &radeon_connector->mst_mgr); - - for (i = 0; i < radeon_connector->enabled_attribs; i++) - seq_printf(m, "attrib %d: %d %d\n", i, - radeon_connector->cur_stream_attribs[i].fe, - radeon_connector->cur_stream_attribs[i].slots); - } - drm_modeset_unlock_all(dev); - return 0; -} - -DEFINE_SHOW_ATTRIBUTE(radeon_debugfs_mst_info); -#endif - -void radeon_mst_debugfs_init(struct radeon_device *rdev) -{ -#if defined(CONFIG_DEBUG_FS) - struct dentry *root = rdev->ddev->primary->debugfs_root; - - debugfs_create_file("radeon_mst_info", 0444, root, rdev, - &radeon_debugfs_mst_info_fops); - -#endif -} diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c index 956c72b5aa33..a28d5ceab628 100644 --- a/drivers/gpu/drm/radeon/radeon_drv.c +++ b/drivers/gpu/drm/radeon/radeon_drv.c @@ -172,7 +172,6 @@ int radeon_use_pflipirq = 2; int radeon_bapm = -1; int radeon_backlight = -1; int radeon_auxch = -1; -int radeon_mst = 0; int radeon_uvd = 1; int radeon_vce = 1; @@ -263,9 +262,6 @@ module_param_named(backlight, radeon_backlight, int, 0444); MODULE_PARM_DESC(auxch, "Use native auxch experimental support (1 = enable, 0 = disable, -1 = auto)"); module_param_named(auxch, radeon_auxch, int, 0444); -MODULE_PARM_DESC(mst, "DisplayPort MST experimental support (1 = enable, 0 = disable)"); -module_param_named(mst, radeon_mst, int, 0444); - MODULE_PARM_DESC(uvd, "uvd enable/disable uvd support (1 = enable, 0 = disable)"); module_param_named(uvd, radeon_uvd, int, 0444); diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c index 46549d5179ee..35c535e48b8d 100644 --- a/drivers/gpu/drm/radeon/radeon_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_encoders.c @@ -244,16 +244,7 @@ radeon_get_connector_for_encoder(struct drm_encoder *encoder) list_for_each_entry(connector, &dev->mode_config.connector_list, head) { radeon_connector = to_radeon_connector(connector); - if (radeon_encoder->is_mst_encoder) { - struct radeon_encoder_mst *mst_enc; - - if (!radeon_connector->is_mst_connector) - continue; - - mst_enc = radeon_encoder->enc_priv; - if (mst_enc->connector == radeon_connector->mst_port) - return connector; - } else if (radeon_encoder->active_device & radeon_connector->devices) + if (radeon_encoder->active_device & radeon_connector->devices) return connector; } return NULL; @@ -399,9 +390,6 @@ bool radeon_dig_monitor_is_duallink(struct drm_encoder *encoder, case DRM_MODE_CONNECTOR_DVID: case DRM_MODE_CONNECTOR_HDMIA: case DRM_MODE_CONNECTOR_DisplayPort: - if (radeon_connector->is_mst_connector) - return false; - dig_connector = radeon_connector->con_priv; if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) || (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP)) diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c index 3907785d0798..da2173435edd 100644 --- a/drivers/gpu/drm/radeon/radeon_irq_kms.c +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c @@ -100,16 +100,8 @@ static void radeon_hotplug_work_func(struct work_struct *work) static void radeon_dp_work_func(struct work_struct *work) { - struct radeon_device *rdev = container_of(work, struct radeon_device, - dp_work); - struct drm_device *dev = rdev->ddev; - struct drm_mode_config *mode_config = &dev->mode_config; - struct drm_connector *connector; - - /* this should take a mutex */ - list_for_each_entry(connector, &mode_config->connector_list, head) - radeon_connector_hotplug(connector); } + /** * radeon_driver_irq_preinstall_kms - drm irq preinstall callback * diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h index b34cffc162e2..6a6a73204226 100644 --- a/drivers/gpu/drm/radeon/radeon_mode.h +++ b/drivers/gpu/drm/radeon/radeon_mode.h @@ -31,7 +31,6 @@ #define RADEON_MODE_H #include -#include #include #include #include @@ -436,24 +435,12 @@ struct radeon_encoder_atom_dig { int panel_mode; struct radeon_afmt *afmt; struct r600_audio_pin *pin; - int active_mst_links; }; struct radeon_encoder_atom_dac { enum radeon_tv_std tv_std; }; -struct radeon_encoder_mst { - int crtc; - struct radeon_encoder *primary; - struct radeon_connector *connector; - struct drm_dp_mst_port *port; - int pbn; - int fe; - bool fe_from_be; - bool enc_active; -}; - struct radeon_encoder { struct drm_encoder base; uint32_t encoder_enum; @@ -475,8 +462,6 @@ struct radeon_encoder { enum radeon_output_csc output_csc; bool can_mst; uint32_t offset; - bool is_mst_encoder; - /* front end for this mst encoder */ }; struct radeon_connector_atom_dig { @@ -487,7 +472,6 @@ struct radeon_connector_atom_dig { int dp_clock; int dp_lane_count; bool edp_on; - bool is_mst; }; struct radeon_gpio_rec { @@ -531,11 +515,6 @@ enum radeon_connector_dither { RADEON_FMT_DITHER_ENABLE = 1, }; -struct stream_attribs { - uint16_t fe; - uint16_t slots; -}; - struct radeon_connector { struct drm_connector base; uint32_t connector_id; @@ -558,14 +537,6 @@ struct radeon_connector { enum radeon_connector_audio audio; enum radeon_connector_dither dither; int pixelclock_for_modeset; - bool is_mst_connector; - struct radeon_connector *mst_port; - struct drm_dp_mst_port *port; - struct drm_dp_mst_topology_mgr mst_mgr; - - struct radeon_encoder *mst_encoder; - struct stream_attribs cur_stream_attribs[6]; - int enabled_attribs; }; #define ENCODER_MODE_IS_DP(em) (((em) == ATOM_ENCODER_MODE_DP) || \ @@ -767,8 +738,6 @@ extern void atombios_dig_transmitter_setup(struct drm_encoder *encoder, extern void atombios_dig_transmitter_setup2(struct drm_encoder *encoder, int action, uint8_t lane_num, uint8_t lane_set, int fe); -extern void atombios_set_mst_encoder_crtc_source(struct drm_encoder *encoder, - int fe); extern void radeon_atom_ext_encoder_setup_ddc(struct drm_encoder *encoder); extern struct drm_encoder *radeon_get_external_encoder(struct drm_encoder *encoder); void radeon_atom_copy_swap(u8 *dst, u8 *src, u8 num_bytes, bool to_le); @@ -986,15 +955,6 @@ void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id); int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled); -/* mst */ -int radeon_dp_mst_init(struct radeon_connector *radeon_connector); -int radeon_dp_mst_probe(struct radeon_connector *radeon_connector); -int radeon_dp_mst_check_status(struct radeon_connector *radeon_connector); -void radeon_mst_debugfs_init(struct radeon_device *rdev); -void radeon_dp_mst_prepare_pll(struct drm_crtc *crtc, struct drm_display_mode *mode); - -void radeon_setup_mst_connector(struct drm_device *dev); - int radeon_atom_pick_dig_encoder(struct drm_encoder *encoder, int fe_idx); void radeon_atom_release_dig_encoder(struct radeon_device *rdev, int enc_idx); #endif From 4d07b0bc403403438d9cf88450506240c5faf92f Mon Sep 17 00:00:00 2001 From: Lyude Paul Date: Wed, 17 Aug 2022 15:38:46 -0400 Subject: [PATCH 032/111] drm/display/dp_mst: Move all payload info into the atomic state MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Now that we've finally gotten rid of the non-atomic MST users leftover in the kernel, we can finally get rid of all of the legacy payload code we have and move as much as possible into the MST atomic state structs. The main purpose of this is to make the MST code a lot less confusing to work on, as there's a lot of duplicated logic that doesn't really need to be here. As well, this should make introducing features like fallback link retraining and DSC support far easier. Since the old payload code was pretty gnarly and there's a Lot of changes here, I expect this might be a bit difficult to review. So to make things as easy as possible for reviewers, I'll sum up how both the old and new code worked here (it took me a while to figure this out too!). The old MST code basically worked by maintaining two different payload tables - proposed_vcpis, and payloads. proposed_vcpis would hold the modified payload we wanted to push to the topology, while payloads held the payload table that was currently programmed in hardware. Modifications to proposed_vcpis would be handled through drm_dp_allocate_vcpi(), drm_dp_mst_deallocate_vcpi(), and drm_dp_mst_reset_vcpi_slots(). Then, they would be pushed via drm_dp_mst_update_payload_step1() and drm_dp_mst_update_payload_step2(). Furthermore, it's important to note how adding and removing VC payloads actually worked with drm_dp_mst_update_payload_step1(). When a VC payload is removed from the VC table, all VC payloads which come after the removed VC payload's slots must have their time slots shifted towards the start of the table. The old code handles this by looping through the entire payload table and recomputing the start slot for every payload in the topology from scratch. While very much overkill, this ends up doing the right thing because we always order the VCPIs for payloads from first to last starting timeslot. It's important to also note that drm_dp_mst_update_payload_step2() isn't actually limited to updating a single payload - the driver can use it to queue up multiple payload changes so that as many of them can be sent as possible before waiting for the ACT. This is -technically- not against spec, but as Wayne Lin has pointed out it's not consistently implemented correctly in hubs - so it might as well be. drm_dp_mst_update_payload_step2() is pretty self explanatory and basically the same between the old and new code, save for the fact we don't have a second step for deleting payloads anymore -and thus rename it to drm_dp_mst_add_payload_step2(). The new payload code stores all of the current payload info within the MST atomic state and computes as much of the state as possible ahead of time. This has the one exception of the starting timeslots for payloads, which can't be determined at atomic check time since the starting time slots will vary depending on what order CRTCs are enabled in the atomic state - which varies from driver to driver. These are still stored in the atomic MST state, but are only copied from the old MST state during atomic commit time. Likewise, this is when new start slots are determined. Adding/removing payloads now works much more closely to how things are described in the spec. When we delete a payload, we loop through the current list of payloads and update the start slots for any payloads whose time slots came after the payload we just deleted. Determining the starting time slots for new payloads being added is done by simply keeping track of where the end of the VC table is in drm_dp_mst_topology_mgr->next_start_slot. Additionally, it's worth noting that we no longer have a single update_payload() function. Instead, we now have drm_dp_mst_add_payload_step1|2() and drm_dp_mst_remove_payload(). As such, it's now left it up to the driver to figure out when to add or remove payloads. The driver already knows when it's disabling/enabling CRTCs, so it also already knows when payloads should be added or removed. Changes since v1: * Refactor around all of the completely dead code changes that are happening in amdgpu for some reason when they really shouldn't even be there in the first place… :\ * Remove mention of sending one ACT per series of payload updates. As Wayne Lin pointed out, there are apparently hubs on the market that don't work correctly with this scheme and require a separate ACT per payload update. * Fix accidental drop of mst_mgr.lock - Wayne Lin * Remove mentions of allowing multiple ACT updates per payload change, mention that this is a result of vendors not consistently supporting this part of the spec and requiring a unique ACT for each payload change. * Get rid of reference to drm_dp_mst_port in DC - turns out I just got myself confused by DC and we don't actually need this. Changes since v2: * Get rid of fix for not sending payload deallocations if ddps=0 and just go back to wayne's fix Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-18-lyude@redhat.com --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 56 +- .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 100 +-- .../display/amdgpu_dm/amdgpu_dm_mst_types.c | 84 +- .../amd/display/include/link_service_types.h | 3 + drivers/gpu/drm/display/drm_dp_mst_topology.c | 736 ++++++------------ drivers/gpu/drm/i915/display/intel_dp_mst.c | 64 +- drivers/gpu/drm/i915/display/intel_hdcp.c | 24 +- drivers/gpu/drm/nouveau/dispnv50/disp.c | 163 ++-- include/drm/display/drm_dp_mst_helper.h | 177 ++--- 9 files changed, 529 insertions(+), 878 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 789748739d79..9ab01c58bedb 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6385,6 +6385,7 @@ static int dm_encoder_helper_atomic_check(struct drm_encoder *encoder, const struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode; struct drm_dp_mst_topology_mgr *mst_mgr; struct drm_dp_mst_port *mst_port; + struct drm_dp_mst_topology_state *mst_state; enum dc_color_depth color_depth; int clock, bpp = 0; bool is_y420 = false; @@ -6398,6 +6399,13 @@ static int dm_encoder_helper_atomic_check(struct drm_encoder *encoder, if (!crtc_state->connectors_changed && !crtc_state->mode_changed) return 0; + mst_state = drm_atomic_get_mst_topology_state(state, mst_mgr); + if (IS_ERR(mst_state)) + return PTR_ERR(mst_state); + + if (!mst_state->pbn_div) + mst_state->pbn_div = dm_mst_get_pbn_divider(aconnector->mst_port->dc_link); + if (!state->duplicated) { int max_bpc = conn_state->max_requested_bpc; is_y420 = drm_mode_is_420_also(&connector->display_info, adjusted_mode) && @@ -6409,11 +6417,10 @@ static int dm_encoder_helper_atomic_check(struct drm_encoder *encoder, clock = adjusted_mode->clock; dm_new_connector_state->pbn = drm_dp_calc_pbn_mode(clock, bpp, false); } - dm_new_connector_state->vcpi_slots = drm_dp_atomic_find_time_slots(state, - mst_mgr, - mst_port, - dm_new_connector_state->pbn, - dm_mst_get_pbn_divider(aconnector->dc_link)); + + dm_new_connector_state->vcpi_slots = + drm_dp_atomic_find_time_slots(state, mst_mgr, mst_port, + dm_new_connector_state->pbn); if (dm_new_connector_state->vcpi_slots < 0) { DRM_DEBUG_ATOMIC("failed finding vcpi slots: %d\n", (int)dm_new_connector_state->vcpi_slots); return dm_new_connector_state->vcpi_slots; @@ -6483,18 +6490,12 @@ static int dm_update_mst_vcpi_slots_for_dsc(struct drm_atomic_state *state, dm_conn_state->pbn = pbn; dm_conn_state->vcpi_slots = slot_num; - drm_dp_mst_atomic_enable_dsc(state, - aconnector->port, - dm_conn_state->pbn, - 0, + drm_dp_mst_atomic_enable_dsc(state, aconnector->port, dm_conn_state->pbn, false); continue; } - vcpi = drm_dp_mst_atomic_enable_dsc(state, - aconnector->port, - pbn, pbn_div, - true); + vcpi = drm_dp_mst_atomic_enable_dsc(state, aconnector->port, pbn, true); if (vcpi < 0) return vcpi; @@ -9336,8 +9337,6 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev, struct dm_crtc_state *dm_old_crtc_state, *dm_new_crtc_state; #if defined(CONFIG_DRM_AMD_DC_DCN) struct dsc_mst_fairness_vars vars[MAX_PIPES]; - struct drm_dp_mst_topology_state *mst_state; - struct drm_dp_mst_topology_mgr *mgr; #endif trace_amdgpu_dm_atomic_check_begin(state); @@ -9576,33 +9575,6 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev, lock_and_validation_needed = true; } -#if defined(CONFIG_DRM_AMD_DC_DCN) - /* set the slot info for each mst_state based on the link encoding format */ - for_each_new_mst_mgr_in_state(state, mgr, mst_state, i) { - struct amdgpu_dm_connector *aconnector; - struct drm_connector *connector; - struct drm_connector_list_iter iter; - u8 link_coding_cap; - - if (!mgr->mst_state ) - continue; - - drm_connector_list_iter_begin(dev, &iter); - drm_for_each_connector_iter(connector, &iter) { - int id = connector->index; - - if (id == mst_state->mgr->conn_base_id) { - aconnector = to_amdgpu_dm_connector(connector); - link_coding_cap = dc_link_dp_mst_decide_link_encoding_format(aconnector->dc_link); - drm_dp_mst_update_slots(mst_state, link_coding_cap); - - break; - } - } - drm_connector_list_iter_end(&iter); - - } -#endif /** * Streams and planes are reset when there are changes that affect * bandwidth. Anything that affects bandwidth needs to go through diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index 0177a275b4df..988b9bf34c93 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -27,6 +27,7 @@ #include #include +#include #include #include #include @@ -154,40 +155,27 @@ enum dc_edid_status dm_helpers_parse_edid_caps( } static void -fill_dc_mst_payload_table_from_drm(struct amdgpu_dm_connector *aconnector, - struct dc_dp_mst_stream_allocation_table *proposed_table) +fill_dc_mst_payload_table_from_drm(struct drm_dp_mst_topology_state *mst_state, + struct amdgpu_dm_connector *aconnector, + struct dc_dp_mst_stream_allocation_table *table) { - int i; - struct drm_dp_mst_topology_mgr *mst_mgr = - &aconnector->mst_port->mst_mgr; + struct dc_dp_mst_stream_allocation_table new_table = { 0 }; + struct dc_dp_mst_stream_allocation *sa; + struct drm_dp_mst_atomic_payload *payload; - mutex_lock(&mst_mgr->payload_lock); + /* Fill payload info*/ + list_for_each_entry(payload, &mst_state->payloads, next) { + if (payload->delete) + continue; - proposed_table->stream_count = 0; - - /* number of active streams */ - for (i = 0; i < mst_mgr->max_payloads; i++) { - if (mst_mgr->payloads[i].num_slots == 0) - break; /* end of vcp_id table */ - - ASSERT(mst_mgr->payloads[i].payload_state != - DP_PAYLOAD_DELETE_LOCAL); - - if (mst_mgr->payloads[i].payload_state == DP_PAYLOAD_LOCAL || - mst_mgr->payloads[i].payload_state == - DP_PAYLOAD_REMOTE) { - - struct dc_dp_mst_stream_allocation *sa = - &proposed_table->stream_allocations[ - proposed_table->stream_count]; - - sa->slot_count = mst_mgr->payloads[i].num_slots; - sa->vcp_id = mst_mgr->proposed_vcpis[i]->vcpi; - proposed_table->stream_count++; - } + sa = &new_table.stream_allocations[new_table.stream_count]; + sa->slot_count = payload->time_slots; + sa->vcp_id = payload->vcpi; + new_table.stream_count++; } - mutex_unlock(&mst_mgr->payload_lock); + /* Overwrite the old table */ + *table = new_table; } void dm_helpers_dp_update_branch_info( @@ -205,11 +193,9 @@ bool dm_helpers_dp_mst_write_payload_allocation_table( bool enable) { struct amdgpu_dm_connector *aconnector; - struct dm_connector_state *dm_conn_state; + struct drm_dp_mst_topology_state *mst_state; + struct drm_dp_mst_atomic_payload *payload; struct drm_dp_mst_topology_mgr *mst_mgr; - struct drm_dp_mst_port *mst_port; - bool ret; - u8 link_coding_cap = DP_8b_10b_ENCODING; aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context; /* Accessing the connector state is required for vcpi_slots allocation @@ -220,40 +206,21 @@ bool dm_helpers_dp_mst_write_payload_allocation_table( if (!aconnector || !aconnector->mst_port) return false; - dm_conn_state = to_dm_connector_state(aconnector->base.state); - mst_mgr = &aconnector->mst_port->mst_mgr; - - if (!mst_mgr->mst_state) - return false; - - mst_port = aconnector->port; - -#if defined(CONFIG_DRM_AMD_DC_DCN) - link_coding_cap = dc_link_dp_mst_decide_link_encoding_format(aconnector->dc_link); -#endif - - if (enable) { - - ret = drm_dp_mst_allocate_vcpi(mst_mgr, mst_port, - dm_conn_state->pbn, - dm_conn_state->vcpi_slots); - if (!ret) - return false; - - } else { - drm_dp_mst_reset_vcpi_slots(mst_mgr, mst_port); - } + mst_state = to_drm_dp_mst_topology_state(mst_mgr->base.state); /* It's OK for this to fail */ - drm_dp_update_payload_part1(mst_mgr, (link_coding_cap == DP_CAP_ANSI_128B132B) ? 0:1); + payload = drm_atomic_get_mst_payload_state(mst_state, aconnector->port); + if (enable) + drm_dp_add_payload_part1(mst_mgr, mst_state, payload); + else + drm_dp_remove_payload(mst_mgr, mst_state, payload); /* mst_mgr->->payloads are VC payload notify MST branch using DPCD or * AUX message. The sequence is slot 1-63 allocated sequence for each * stream. AMD ASIC stream slot allocation should follow the same * sequence. copy DRM MST allocation to dc */ - - fill_dc_mst_payload_table_from_drm(aconnector, proposed_table); + fill_dc_mst_payload_table_from_drm(mst_state, aconnector, proposed_table); return true; } @@ -310,8 +277,9 @@ bool dm_helpers_dp_mst_send_payload_allocation( bool enable) { struct amdgpu_dm_connector *aconnector; + struct drm_dp_mst_topology_state *mst_state; struct drm_dp_mst_topology_mgr *mst_mgr; - struct drm_dp_mst_port *mst_port; + struct drm_dp_mst_atomic_payload *payload; enum mst_progress_status set_flag = MST_ALLOCATE_NEW_PAYLOAD; enum mst_progress_status clr_flag = MST_CLEAR_ALLOCATED_PAYLOAD; @@ -320,19 +288,16 @@ bool dm_helpers_dp_mst_send_payload_allocation( if (!aconnector || !aconnector->mst_port) return false; - mst_port = aconnector->port; - mst_mgr = &aconnector->mst_port->mst_mgr; + mst_state = to_drm_dp_mst_topology_state(mst_mgr->base.state); - if (!mst_mgr->mst_state) - return false; - + payload = drm_atomic_get_mst_payload_state(mst_state, aconnector->port); if (!enable) { set_flag = MST_CLEAR_ALLOCATED_PAYLOAD; clr_flag = MST_ALLOCATE_NEW_PAYLOAD; } - if (drm_dp_update_payload_part2(mst_mgr)) { + if (enable && drm_dp_add_payload_part2(mst_mgr, mst_state->base.state, payload)) { amdgpu_dm_set_mst_status(&aconnector->mst_status, set_flag, false); } else { @@ -342,9 +307,6 @@ bool dm_helpers_dp_mst_send_payload_allocation( clr_flag, false); } - if (!enable) - drm_dp_mst_deallocate_vcpi(mst_mgr, mst_port); - return true; } diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 7a0d6cfa77f5..bd9606307dc7 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -597,15 +597,8 @@ void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm, dc_link_dp_get_max_link_enc_cap(aconnector->dc_link, &max_link_enc_cap); aconnector->mst_mgr.cbs = &dm_mst_cbs; - drm_dp_mst_topology_mgr_init( - &aconnector->mst_mgr, - adev_to_drm(dm->adev), - &aconnector->dm_dp_aux.aux, - 16, - 4, - max_link_enc_cap.lane_count, - drm_dp_bw_code_to_link_rate(max_link_enc_cap.link_rate), - aconnector->connector_id); + drm_dp_mst_topology_mgr_init(&aconnector->mst_mgr, adev_to_drm(dm->adev), + &aconnector->dm_dp_aux.aux, 16, 4, aconnector->connector_id); drm_connector_attach_dp_subconnector_property(&aconnector->base); } @@ -710,6 +703,7 @@ static int bpp_x16_from_pbn(struct dsc_mst_fairness_params param, int pbn) } static bool increase_dsc_bpp(struct drm_atomic_state *state, + struct drm_dp_mst_topology_state *mst_state, struct dc_link *dc_link, struct dsc_mst_fairness_params *params, struct dsc_mst_fairness_vars *vars, @@ -722,12 +716,9 @@ static bool increase_dsc_bpp(struct drm_atomic_state *state, int min_initial_slack; int next_index; int remaining_to_increase = 0; - int pbn_per_timeslot; int link_timeslots_used; int fair_pbn_alloc; - pbn_per_timeslot = dm_mst_get_pbn_divider(dc_link); - for (i = 0; i < count; i++) { if (vars[i + k].dsc_enabled) { initial_slack[i] = @@ -758,17 +749,17 @@ static bool increase_dsc_bpp(struct drm_atomic_state *state, link_timeslots_used = 0; for (i = 0; i < count; i++) - link_timeslots_used += DIV_ROUND_UP(vars[i + k].pbn, pbn_per_timeslot); + link_timeslots_used += DIV_ROUND_UP(vars[i + k].pbn, mst_state->pbn_div); - fair_pbn_alloc = (63 - link_timeslots_used) / remaining_to_increase * pbn_per_timeslot; + fair_pbn_alloc = + (63 - link_timeslots_used) / remaining_to_increase * mst_state->pbn_div; if (initial_slack[next_index] > fair_pbn_alloc) { vars[next_index].pbn += fair_pbn_alloc; if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, - vars[next_index].pbn, - pbn_per_timeslot) < 0) + vars[next_index].pbn) < 0) return false; if (!drm_dp_mst_atomic_check(state)) { vars[next_index].bpp_x16 = bpp_x16_from_pbn(params[next_index], vars[next_index].pbn); @@ -777,8 +768,7 @@ static bool increase_dsc_bpp(struct drm_atomic_state *state, if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, - vars[next_index].pbn, - pbn_per_timeslot) < 0) + vars[next_index].pbn) < 0) return false; } } else { @@ -786,8 +776,7 @@ static bool increase_dsc_bpp(struct drm_atomic_state *state, if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, - vars[next_index].pbn, - pbn_per_timeslot) < 0) + vars[next_index].pbn) < 0) return false; if (!drm_dp_mst_atomic_check(state)) { vars[next_index].bpp_x16 = params[next_index].bw_range.max_target_bpp_x16; @@ -796,8 +785,7 @@ static bool increase_dsc_bpp(struct drm_atomic_state *state, if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, - vars[next_index].pbn, - pbn_per_timeslot) < 0) + vars[next_index].pbn) < 0) return false; } } @@ -854,8 +842,7 @@ static bool try_disable_dsc(struct drm_atomic_state *state, if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, - vars[next_index].pbn, - dm_mst_get_pbn_divider(dc_link)) < 0) + vars[next_index].pbn) < 0) return false; if (!drm_dp_mst_atomic_check(state)) { @@ -866,8 +853,7 @@ static bool try_disable_dsc(struct drm_atomic_state *state, if (drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, - vars[next_index].pbn, - dm_mst_get_pbn_divider(dc_link)) < 0) + vars[next_index].pbn) < 0) return false; } @@ -881,17 +867,27 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, struct dc_state *dc_state, struct dc_link *dc_link, struct dsc_mst_fairness_vars *vars, + struct drm_dp_mst_topology_mgr *mgr, int *link_vars_start_index) { - int i, k; struct dc_stream_state *stream; struct dsc_mst_fairness_params params[MAX_PIPES]; struct amdgpu_dm_connector *aconnector; + struct drm_dp_mst_topology_state *mst_state = drm_atomic_get_mst_topology_state(state, mgr); int count = 0; + int i, k; bool debugfs_overwrite = false; memset(params, 0, sizeof(params)); + if (IS_ERR(mst_state)) + return false; + + mst_state->pbn_div = dm_mst_get_pbn_divider(dc_link); +#if defined(CONFIG_DRM_AMD_DC_DCN) + drm_dp_mst_update_slots(mst_state, dc_link_dp_mst_decide_link_encoding_format(dc_link)); +#endif + /* Set up params */ for (i = 0; i < dc_state->stream_count; i++) { struct dc_dsc_policy dsc_policy = {0}; @@ -950,11 +946,8 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps); vars[i + k].dsc_enabled = false; vars[i + k].bpp_x16 = 0; - if (drm_dp_atomic_find_time_slots(state, - params[i].port->mgr, - params[i].port, - vars[i + k].pbn, - dm_mst_get_pbn_divider(dc_link)) < 0) + if (drm_dp_atomic_find_time_slots(state, params[i].port->mgr, params[i].port, + vars[i + k].pbn) < 0) return false; } if (!drm_dp_mst_atomic_check(state) && !debugfs_overwrite) { @@ -968,21 +961,15 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.min_kbps); vars[i + k].dsc_enabled = true; vars[i + k].bpp_x16 = params[i].bw_range.min_target_bpp_x16; - if (drm_dp_atomic_find_time_slots(state, - params[i].port->mgr, - params[i].port, - vars[i + k].pbn, - dm_mst_get_pbn_divider(dc_link)) < 0) + if (drm_dp_atomic_find_time_slots(state, params[i].port->mgr, + params[i].port, vars[i + k].pbn) < 0) return false; } else { vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps); vars[i + k].dsc_enabled = false; vars[i + k].bpp_x16 = 0; - if (drm_dp_atomic_find_time_slots(state, - params[i].port->mgr, - params[i].port, - vars[i + k].pbn, - dm_mst_get_pbn_divider(dc_link)) < 0) + if (drm_dp_atomic_find_time_slots(state, params[i].port->mgr, + params[i].port, vars[i + k].pbn) < 0) return false; } } @@ -990,7 +977,7 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, return false; /* Optimize degree of compression */ - if (!increase_dsc_bpp(state, dc_link, params, vars, count, k)) + if (!increase_dsc_bpp(state, mst_state, dc_link, params, vars, count, k)) return false; if (!try_disable_dsc(state, dc_link, params, vars, count, k)) @@ -1136,8 +1123,9 @@ bool compute_mst_dsc_configs_for_state(struct drm_atomic_state *state, continue; mutex_lock(&aconnector->mst_mgr.lock); - if (!compute_mst_dsc_configs_for_link(state, dc_state, stream->link, - vars, &link_vars_start_index)) { + if (!compute_mst_dsc_configs_for_link(state, dc_state, stream->link, vars, + &aconnector->mst_mgr, + &link_vars_start_index)) { mutex_unlock(&aconnector->mst_mgr.lock); return false; } @@ -1195,10 +1183,8 @@ static bool continue; mutex_lock(&aconnector->mst_mgr.lock); - if (!compute_mst_dsc_configs_for_link(state, - dc_state, - stream->link, - vars, + if (!compute_mst_dsc_configs_for_link(state, dc_state, stream->link, vars, + &aconnector->mst_mgr, &link_vars_start_index)) { mutex_unlock(&aconnector->mst_mgr.lock); return false; diff --git a/drivers/gpu/drm/amd/display/include/link_service_types.h b/drivers/gpu/drm/amd/display/include/link_service_types.h index f75ed6f8fcb8..d76ab72baf0c 100644 --- a/drivers/gpu/drm/amd/display/include/link_service_types.h +++ b/drivers/gpu/drm/amd/display/include/link_service_types.h @@ -251,6 +251,9 @@ union dpcd_training_lane_set { * _ONLY_ be filled out from DM and then passed to DC, do NOT use these for _any_ kind of atomic * state calculations in DM, or you will break something. */ + +struct drm_dp_mst_port; + /* DP MST stream allocation (payload bandwidth number) */ struct dc_dp_mst_stream_allocation { uint8_t vcp_id; diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index c4073d733c59..1de438151cc3 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -68,8 +68,7 @@ static bool dump_dp_payload_table(struct drm_dp_mst_topology_mgr *mgr, static void drm_dp_mst_topology_put_port(struct drm_dp_mst_port *port); static int drm_dp_dpcd_write_payload(struct drm_dp_mst_topology_mgr *mgr, - int id, - struct drm_dp_payload *payload); + int id, u8 start_slot, u8 num_slots); static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, @@ -1235,57 +1234,6 @@ build_query_stream_enc_status(struct drm_dp_sideband_msg_tx *msg, u8 stream_id, return 0; } -static int drm_dp_mst_assign_payload_id(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_vcpi *vcpi) -{ - int ret, vcpi_ret; - - mutex_lock(&mgr->payload_lock); - ret = find_first_zero_bit(&mgr->payload_mask, mgr->max_payloads + 1); - if (ret > mgr->max_payloads) { - ret = -EINVAL; - drm_dbg_kms(mgr->dev, "out of payload ids %d\n", ret); - goto out_unlock; - } - - vcpi_ret = find_first_zero_bit(&mgr->vcpi_mask, mgr->max_payloads + 1); - if (vcpi_ret > mgr->max_payloads) { - ret = -EINVAL; - drm_dbg_kms(mgr->dev, "out of vcpi ids %d\n", ret); - goto out_unlock; - } - - set_bit(ret, &mgr->payload_mask); - set_bit(vcpi_ret, &mgr->vcpi_mask); - vcpi->vcpi = vcpi_ret + 1; - mgr->proposed_vcpis[ret - 1] = vcpi; -out_unlock: - mutex_unlock(&mgr->payload_lock); - return ret; -} - -static void drm_dp_mst_put_payload_id(struct drm_dp_mst_topology_mgr *mgr, - int vcpi) -{ - int i; - - if (vcpi == 0) - return; - - mutex_lock(&mgr->payload_lock); - drm_dbg_kms(mgr->dev, "putting payload %d\n", vcpi); - clear_bit(vcpi - 1, &mgr->vcpi_mask); - - for (i = 0; i < mgr->max_payloads; i++) { - if (mgr->proposed_vcpis[i] && - mgr->proposed_vcpis[i]->vcpi == vcpi) { - mgr->proposed_vcpis[i] = NULL; - clear_bit(i + 1, &mgr->payload_mask); - } - } - mutex_unlock(&mgr->payload_lock); -} - static bool check_txmsg_state(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_sideband_msg_tx *txmsg) { @@ -1738,7 +1686,7 @@ drm_dp_mst_dump_port_topology_history(struct drm_dp_mst_port *port) {} #define save_port_topology_ref(port, type) #endif -static struct drm_dp_mst_atomic_payload * +struct drm_dp_mst_atomic_payload * drm_atomic_get_mst_payload_state(struct drm_dp_mst_topology_state *state, struct drm_dp_mst_port *port) { @@ -1750,6 +1698,7 @@ drm_atomic_get_mst_payload_state(struct drm_dp_mst_topology_state *state, return NULL; } +EXPORT_SYMBOL(drm_atomic_get_mst_payload_state); static void drm_dp_destroy_mst_branch_device(struct kref *kref) { @@ -3252,6 +3201,8 @@ int drm_dp_send_query_stream_enc_status(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, struct drm_dp_query_stream_enc_status_ack_reply *status) { + struct drm_dp_mst_topology_state *state; + struct drm_dp_mst_atomic_payload *payload; struct drm_dp_sideband_msg_tx *txmsg; u8 nonce[7]; int ret; @@ -3268,6 +3219,10 @@ int drm_dp_send_query_stream_enc_status(struct drm_dp_mst_topology_mgr *mgr, get_random_bytes(nonce, sizeof(nonce)); + drm_modeset_lock(&mgr->base.lock, NULL); + state = to_drm_dp_mst_topology_state(mgr->base.state); + payload = drm_atomic_get_mst_payload_state(state, port); + /* * "Source device targets the QUERY_STREAM_ENCRYPTION_STATUS message * transaction at the MST Branch device directly connected to the @@ -3275,7 +3230,7 @@ int drm_dp_send_query_stream_enc_status(struct drm_dp_mst_topology_mgr *mgr, */ txmsg->dst = mgr->mst_primary; - build_query_stream_enc_status(txmsg, port->vcpi.vcpi, nonce); + build_query_stream_enc_status(txmsg, payload->vcpi, nonce); drm_dp_queue_down_tx(mgr, txmsg); @@ -3292,6 +3247,7 @@ int drm_dp_send_query_stream_enc_status(struct drm_dp_mst_topology_mgr *mgr, memcpy(status, &txmsg->reply.u.enc_status, sizeof(*status)); out: + drm_modeset_unlock(&mgr->base.lock); drm_dp_mst_topology_put_port(port); out_get_port: kfree(txmsg); @@ -3300,238 +3256,162 @@ out_get_port: EXPORT_SYMBOL(drm_dp_send_query_stream_enc_status); static int drm_dp_create_payload_step1(struct drm_dp_mst_topology_mgr *mgr, - int id, - struct drm_dp_payload *payload) + struct drm_dp_mst_atomic_payload *payload) { - int ret; - - ret = drm_dp_dpcd_write_payload(mgr, id, payload); - if (ret < 0) { - payload->payload_state = 0; - return ret; - } - payload->payload_state = DP_PAYLOAD_LOCAL; - return 0; + return drm_dp_dpcd_write_payload(mgr, payload->vcpi, payload->vc_start_slot, + payload->time_slots); } static int drm_dp_create_payload_step2(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_port *port, - int id, - struct drm_dp_payload *payload) + struct drm_dp_mst_atomic_payload *payload) { int ret; + struct drm_dp_mst_port *port = drm_dp_mst_topology_get_port_validated(mgr, payload->port); - ret = drm_dp_payload_send_msg(mgr, port, id, port->vcpi.pbn); - if (ret < 0) - return ret; - payload->payload_state = DP_PAYLOAD_REMOTE; + if (!port) + return -EIO; + + ret = drm_dp_payload_send_msg(mgr, port, payload->vcpi, payload->pbn); + drm_dp_mst_topology_put_port(port); return ret; } static int drm_dp_destroy_payload_step1(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_port *port, - int id, - struct drm_dp_payload *payload) + struct drm_dp_mst_topology_state *mst_state, + struct drm_dp_mst_atomic_payload *payload) { drm_dbg_kms(mgr->dev, "\n"); + /* it's okay for these to fail */ - if (port) { - drm_dp_payload_send_msg(mgr, port, id, 0); - } + drm_dp_payload_send_msg(mgr, payload->port, payload->vcpi, 0); + drm_dp_dpcd_write_payload(mgr, payload->vcpi, payload->vc_start_slot, 0); - drm_dp_dpcd_write_payload(mgr, id, payload); - payload->payload_state = DP_PAYLOAD_DELETE_LOCAL; - return 0; -} - -static int drm_dp_destroy_payload_step2(struct drm_dp_mst_topology_mgr *mgr, - int id, - struct drm_dp_payload *payload) -{ - payload->payload_state = 0; return 0; } /** - * drm_dp_update_payload_part1() - Execute payload update part 1 - * @mgr: manager to use. - * @start_slot: this is the cur slot + * drm_dp_add_payload_part1() - Execute payload update part 1 + * @mgr: Manager to use. + * @mst_state: The MST atomic state + * @payload: The payload to write * - * NOTE: start_slot is a temporary workaround for non-atomic drivers, - * this will be removed when non-atomic mst helpers are moved out of the helper + * Determines the starting time slot for the given payload, and programs the VCPI for this payload + * into hardware. After calling this, the driver should generate ACT and payload packets. * - * This iterates over all proposed virtual channels, and tries to - * allocate space in the link for them. For 0->slots transitions, - * this step just writes the VCPI to the MST device. For slots->0 - * transitions, this writes the updated VCPIs and removes the - * remote VC payloads. - * - * after calling this the driver should generate ACT and payload - * packets. + * Returns: 0 on success, error code on failure. In the event that this fails, + * @payload.vc_start_slot will also be set to -1. */ -int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr, int start_slot) +int drm_dp_add_payload_part1(struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_topology_state *mst_state, + struct drm_dp_mst_atomic_payload *payload) { - struct drm_dp_payload req_payload; struct drm_dp_mst_port *port; - int i, j; - int cur_slots = start_slot; - bool skip; + int ret; - mutex_lock(&mgr->payload_lock); - for (i = 0; i < mgr->max_payloads; i++) { - struct drm_dp_vcpi *vcpi = mgr->proposed_vcpis[i]; - struct drm_dp_payload *payload = &mgr->payloads[i]; - bool put_port = false; + port = drm_dp_mst_topology_get_port_validated(mgr, payload->port); + if (!port) + return 0; - /* solve the current payloads - compare to the hw ones - - update the hw view */ - req_payload.start_slot = cur_slots; - if (vcpi) { - port = container_of(vcpi, struct drm_dp_mst_port, - vcpi); + if (mgr->payload_count == 0) + mgr->next_start_slot = mst_state->start_slot; - mutex_lock(&mgr->lock); - skip = !drm_dp_mst_port_downstream_of_branch(port, mgr->mst_primary); - mutex_unlock(&mgr->lock); + payload->vc_start_slot = mgr->next_start_slot; - if (skip) { - drm_dbg_kms(mgr->dev, - "Virtual channel %d is not in current topology\n", - i); - continue; - } - /* Validated ports don't matter if we're releasing - * VCPI - */ - if (vcpi->num_slots) { - port = drm_dp_mst_topology_get_port_validated( - mgr, port); - if (!port) { - if (vcpi->num_slots == payload->num_slots) { - cur_slots += vcpi->num_slots; - payload->start_slot = req_payload.start_slot; - continue; - } else { - drm_dbg_kms(mgr->dev, - "Fail:set payload to invalid sink"); - mutex_unlock(&mgr->payload_lock); - return -EINVAL; - } - } - put_port = true; - } - - req_payload.num_slots = vcpi->num_slots; - req_payload.vcpi = vcpi->vcpi; - } else { - port = NULL; - req_payload.num_slots = 0; - } - - payload->start_slot = req_payload.start_slot; - /* work out what is required to happen with this payload */ - if (payload->num_slots != req_payload.num_slots) { - - /* need to push an update for this payload */ - if (req_payload.num_slots) { - drm_dp_create_payload_step1(mgr, vcpi->vcpi, - &req_payload); - payload->num_slots = req_payload.num_slots; - payload->vcpi = req_payload.vcpi; - - } else if (payload->num_slots) { - payload->num_slots = 0; - drm_dp_destroy_payload_step1(mgr, port, - payload->vcpi, - payload); - req_payload.payload_state = - payload->payload_state; - payload->start_slot = 0; - } - payload->payload_state = req_payload.payload_state; - } - cur_slots += req_payload.num_slots; - - if (put_port) - drm_dp_mst_topology_put_port(port); + ret = drm_dp_create_payload_step1(mgr, payload); + drm_dp_mst_topology_put_port(port); + if (ret < 0) { + drm_warn(mgr->dev, "Failed to create MST payload for port %p: %d\n", + payload->port, ret); + payload->vc_start_slot = -1; + return ret; } - for (i = 0; i < mgr->max_payloads; /* do nothing */) { - if (mgr->payloads[i].payload_state != DP_PAYLOAD_DELETE_LOCAL) { - i++; - continue; - } - - drm_dbg_kms(mgr->dev, "removing payload %d\n", i); - for (j = i; j < mgr->max_payloads - 1; j++) { - mgr->payloads[j] = mgr->payloads[j + 1]; - mgr->proposed_vcpis[j] = mgr->proposed_vcpis[j + 1]; - - if (mgr->proposed_vcpis[j] && - mgr->proposed_vcpis[j]->num_slots) { - set_bit(j + 1, &mgr->payload_mask); - } else { - clear_bit(j + 1, &mgr->payload_mask); - } - } - - memset(&mgr->payloads[mgr->max_payloads - 1], 0, - sizeof(struct drm_dp_payload)); - mgr->proposed_vcpis[mgr->max_payloads - 1] = NULL; - clear_bit(mgr->max_payloads, &mgr->payload_mask); - } - mutex_unlock(&mgr->payload_lock); + mgr->payload_count++; + mgr->next_start_slot += payload->time_slots; return 0; } -EXPORT_SYMBOL(drm_dp_update_payload_part1); +EXPORT_SYMBOL(drm_dp_add_payload_part1); /** - * drm_dp_update_payload_part2() - Execute payload update part 2 - * @mgr: manager to use. + * drm_dp_remove_payload() - Remove an MST payload + * @mgr: Manager to use. + * @mst_state: The MST atomic state + * @payload: The payload to write * - * This iterates over all proposed virtual channels, and tries to - * allocate space in the link for them. For 0->slots transitions, - * this step writes the remote VC payload commands. For slots->0 - * this just resets some internal state. + * Removes a payload from an MST topology if it was successfully assigned a start slot. Also updates + * the starting time slots of all other payloads which would have been shifted towards the start of + * the VC table as a result. After calling this, the driver should generate ACT and payload packets. */ -int drm_dp_update_payload_part2(struct drm_dp_mst_topology_mgr *mgr) +void drm_dp_remove_payload(struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_topology_state *mst_state, + struct drm_dp_mst_atomic_payload *payload) +{ + struct drm_dp_mst_atomic_payload *pos; + bool send_remove = false; + + /* We failed to make the payload, so nothing to do */ + if (payload->vc_start_slot == -1) + return; + + mutex_lock(&mgr->lock); + send_remove = drm_dp_mst_port_downstream_of_branch(payload->port, mgr->mst_primary); + mutex_unlock(&mgr->lock); + + if (send_remove) + drm_dp_destroy_payload_step1(mgr, mst_state, payload); + else + drm_dbg_kms(mgr->dev, "Payload for VCPI %d not in topology, not sending remove\n", + payload->vcpi); + + list_for_each_entry(pos, &mst_state->payloads, next) { + if (pos != payload && pos->vc_start_slot > payload->vc_start_slot) + pos->vc_start_slot -= payload->time_slots; + } + payload->vc_start_slot = -1; + + mgr->payload_count--; + mgr->next_start_slot -= payload->time_slots; +} +EXPORT_SYMBOL(drm_dp_remove_payload); + +/** + * drm_dp_add_payload_part2() - Execute payload update part 2 + * @mgr: Manager to use. + * @state: The global atomic state + * @payload: The payload to update + * + * If @payload was successfully assigned a starting time slot by drm_dp_add_payload_part1(), this + * function will send the sideband messages to finish allocating this payload. + * + * Returns: 0 on success, negative error code on failure. + */ +int drm_dp_add_payload_part2(struct drm_dp_mst_topology_mgr *mgr, + struct drm_atomic_state *state, + struct drm_dp_mst_atomic_payload *payload) { - struct drm_dp_mst_port *port; - int i; int ret = 0; - bool skip; - mutex_lock(&mgr->payload_lock); - for (i = 0; i < mgr->max_payloads; i++) { - - if (!mgr->proposed_vcpis[i]) - continue; - - port = container_of(mgr->proposed_vcpis[i], struct drm_dp_mst_port, vcpi); - - mutex_lock(&mgr->lock); - skip = !drm_dp_mst_port_downstream_of_branch(port, mgr->mst_primary); - mutex_unlock(&mgr->lock); - - if (skip) - continue; - - drm_dbg_kms(mgr->dev, "payload %d %d\n", i, mgr->payloads[i].payload_state); - if (mgr->payloads[i].payload_state == DP_PAYLOAD_LOCAL) { - ret = drm_dp_create_payload_step2(mgr, port, mgr->proposed_vcpis[i]->vcpi, &mgr->payloads[i]); - } else if (mgr->payloads[i].payload_state == DP_PAYLOAD_DELETE_LOCAL) { - ret = drm_dp_destroy_payload_step2(mgr, mgr->proposed_vcpis[i]->vcpi, &mgr->payloads[i]); - } - if (ret) { - mutex_unlock(&mgr->payload_lock); - return ret; - } + /* Skip failed payloads */ + if (payload->vc_start_slot == -1) { + drm_dbg_kms(state->dev, "Part 1 of payload creation for %s failed, skipping part 2\n", + payload->port->connector->name); + return -EIO; } - mutex_unlock(&mgr->payload_lock); - return 0; + + ret = drm_dp_create_payload_step2(mgr, payload); + if (ret < 0) { + if (!payload->delete) + drm_err(mgr->dev, "Step 2 of creating MST payload for %p failed: %d\n", + payload->port, ret); + else + drm_dbg_kms(mgr->dev, "Step 2 of removing MST payload for %p failed: %d\n", + payload->port, ret); + } + + return ret; } -EXPORT_SYMBOL(drm_dp_update_payload_part2); +EXPORT_SYMBOL(drm_dp_add_payload_part2); static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, @@ -3711,7 +3591,6 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms int ret = 0; struct drm_dp_mst_branch *mstb = NULL; - mutex_lock(&mgr->payload_lock); mutex_lock(&mgr->lock); if (mst_state == mgr->mst_state) goto out_unlock; @@ -3719,10 +3598,6 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms mgr->mst_state = mst_state; /* set the device into MST mode */ if (mst_state) { - struct drm_dp_payload reset_pay; - int lane_count; - int link_rate; - WARN_ON(mgr->mst_primary); /* get dpcd info */ @@ -3733,16 +3608,6 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms goto out_unlock; } - lane_count = min_t(int, mgr->dpcd[2] & DP_MAX_LANE_COUNT_MASK, mgr->max_lane_count); - link_rate = min_t(int, drm_dp_bw_code_to_link_rate(mgr->dpcd[1]), mgr->max_link_rate); - mgr->pbn_div = drm_dp_get_vc_payload_bw(mgr, - link_rate, - lane_count); - if (mgr->pbn_div == 0) { - ret = -EINVAL; - goto out_unlock; - } - /* add initial branch device at LCT 1 */ mstb = drm_dp_add_mst_branch_device(1, NULL); if (mstb == NULL) { @@ -3762,9 +3627,8 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms if (ret < 0) goto out_unlock; - reset_pay.start_slot = 0; - reset_pay.num_slots = 0x3f; - drm_dp_dpcd_write_payload(mgr, 0, &reset_pay); + /* Write reset payload */ + drm_dp_dpcd_write_payload(mgr, 0, 0, 0x3f); queue_work(system_long_wq, &mgr->work); @@ -3776,19 +3640,11 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms /* this can fail if the device is gone */ drm_dp_dpcd_writeb(mgr->aux, DP_MSTM_CTRL, 0); ret = 0; - memset(mgr->payloads, 0, - mgr->max_payloads * sizeof(mgr->payloads[0])); - memset(mgr->proposed_vcpis, 0, - mgr->max_payloads * sizeof(mgr->proposed_vcpis[0])); - mgr->payload_mask = 0; - set_bit(0, &mgr->payload_mask); - mgr->vcpi_mask = 0; mgr->payload_id_table_cleared = false; } out_unlock: mutex_unlock(&mgr->lock); - mutex_unlock(&mgr->payload_lock); if (mstb) drm_dp_mst_topology_put_mstb(mstb); return ret; @@ -4307,62 +4163,18 @@ struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_ } EXPORT_SYMBOL(drm_dp_mst_get_edid); -/** - * drm_dp_find_vcpi_slots() - Find time slots for this PBN value - * @mgr: manager to use - * @pbn: payload bandwidth to convert into slots. - * - * Calculate the number of time slots that will be required for the given PBN - * value. This function is deprecated, and should not be used in atomic - * drivers. - * - * RETURNS: - * The total slots required for this port, or error. - */ -int drm_dp_find_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, - int pbn) -{ - int num_slots; - - num_slots = DIV_ROUND_UP(pbn, mgr->pbn_div); - - /* max. time slots - one slot for MTP header */ - if (num_slots > 63) - return -ENOSPC; - return num_slots; -} -EXPORT_SYMBOL(drm_dp_find_vcpi_slots); - -static int drm_dp_init_vcpi(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_vcpi *vcpi, int pbn, int slots) -{ - int ret; - - vcpi->pbn = pbn; - vcpi->aligned_pbn = slots * mgr->pbn_div; - vcpi->num_slots = slots; - - ret = drm_dp_mst_assign_payload_id(mgr, vcpi); - if (ret < 0) - return ret; - return 0; -} - /** * drm_dp_atomic_find_time_slots() - Find and add time slots to the state * @state: global atomic state * @mgr: MST topology manager for the port * @port: port to find time slots for * @pbn: bandwidth required for the mode in PBN - * @pbn_div: divider for DSC mode that takes FEC into account * - * Allocates time slots to @port, replacing any previous timeslot allocations it - * may have had. Any atomic drivers which support MST must call this function - * in their &drm_encoder_helper_funcs.atomic_check() callback to change the - * current timeslot allocation for the new state, but only when - * &drm_crtc_state.mode_changed or &drm_crtc_state.connectors_changed is set - * to ensure compatibility with userspace applications that still use the - * legacy modesetting UAPI. + * Allocates time slots to @port, replacing any previous time slot allocations it may + * have had. Any atomic drivers which support MST must call this function in + * their &drm_encoder_helper_funcs.atomic_check() callback unconditionally to + * change the current time slot allocation for the new state, and ensure the MST + * atomic state is added whenever the state of payloads in the topology changes. * * Allocations set by this function are not checked against the bandwidth * restraints of @mgr until the driver calls drm_dp_mst_atomic_check(). @@ -4381,8 +4193,7 @@ static int drm_dp_init_vcpi(struct drm_dp_mst_topology_mgr *mgr, */ int drm_dp_atomic_find_time_slots(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_port *port, int pbn, - int pbn_div) + struct drm_dp_mst_port *port, int pbn) { struct drm_dp_mst_topology_state *topology_state; struct drm_dp_mst_atomic_payload *payload = NULL; @@ -4415,10 +4226,7 @@ int drm_dp_atomic_find_time_slots(struct drm_atomic_state *state, } } - if (pbn_div <= 0) - pbn_div = mgr->pbn_div; - - req_slots = DIV_ROUND_UP(pbn, pbn_div); + req_slots = DIV_ROUND_UP(pbn, topology_state->pbn_div); drm_dbg_atomic(mgr->dev, "[CONNECTOR:%d:%s] [MST PORT:%p] TU %d -> %d\n", port->connector->base.id, port->connector->name, @@ -4427,7 +4235,7 @@ int drm_dp_atomic_find_time_slots(struct drm_atomic_state *state, port->connector->base.id, port->connector->name, port, prev_bw, pbn); - /* Add the new allocation to the state */ + /* Add the new allocation to the state, note the VCPI isn't assigned until the end */ if (!payload) { payload = kzalloc(sizeof(*payload), GFP_KERNEL); if (!payload) @@ -4435,6 +4243,7 @@ int drm_dp_atomic_find_time_slots(struct drm_atomic_state *state, drm_dp_mst_get_port_malloc(port); payload->port = port; + payload->vc_start_slot = -1; list_add(&payload->next, &topology_state->payloads); } payload->time_slots = req_slots; @@ -4451,10 +4260,12 @@ EXPORT_SYMBOL(drm_dp_atomic_find_time_slots); * @port: The port to release the time slots from * * Releases any time slots that have been allocated to a port in the atomic - * state. Any atomic drivers which support MST must call this function in - * their &drm_connector_helper_funcs.atomic_check() callback when the - * connector will no longer have VCPI allocated (e.g. because its CRTC was - * removed) when it had VCPI allocated in the previous atomic state. + * state. Any atomic drivers which support MST must call this function + * unconditionally in their &drm_connector_helper_funcs.atomic_check() callback. + * This helper will check whether time slots would be released by the new state and + * respond accordingly, along with ensuring the MST state is always added to the + * atomic state whenever a new state would modify the state of payloads on the + * topology. * * It is OK to call this even if @port has been removed from the system. * Additionally, it is OK to call this function multiple times on the same @@ -4516,6 +4327,7 @@ int drm_dp_atomic_release_time_slots(struct drm_atomic_state *state, drm_dp_mst_put_port_malloc(port); payload->pbn = 0; payload->delete = true; + topology_state->payload_mask &= ~BIT(payload->vcpi - 1); } return 0; @@ -4566,7 +4378,8 @@ int drm_dp_mst_atomic_setup_commit(struct drm_atomic_state *state) EXPORT_SYMBOL(drm_dp_mst_atomic_setup_commit); /** - * drm_dp_mst_atomic_wait_for_dependencies() - Wait for all pending commits on MST topologies + * drm_dp_mst_atomic_wait_for_dependencies() - Wait for all pending commits on MST topologies, + * prepare new MST state for commit * @state: global atomic state * * Goes through any MST topologies in this atomic state, and waits for any pending commits which @@ -4584,17 +4397,30 @@ EXPORT_SYMBOL(drm_dp_mst_atomic_setup_commit); */ void drm_dp_mst_atomic_wait_for_dependencies(struct drm_atomic_state *state) { - struct drm_dp_mst_topology_state *old_mst_state; + struct drm_dp_mst_topology_state *old_mst_state, *new_mst_state; struct drm_dp_mst_topology_mgr *mgr; + struct drm_dp_mst_atomic_payload *old_payload, *new_payload; int i, j, ret; - for_each_old_mst_mgr_in_state(state, mgr, old_mst_state, i) { + for_each_oldnew_mst_mgr_in_state(state, mgr, old_mst_state, new_mst_state, i) { for (j = 0; j < old_mst_state->num_commit_deps; j++) { ret = drm_crtc_commit_wait(old_mst_state->commit_deps[j]); if (ret < 0) drm_err(state->dev, "Failed to wait for %s: %d\n", old_mst_state->commit_deps[j]->crtc->name, ret); } + + /* Now that previous state is committed, it's safe to copy over the start slot + * assignments + */ + list_for_each_entry(old_payload, &old_mst_state->payloads, next) { + if (old_payload->delete) + continue; + + new_payload = drm_atomic_get_mst_payload_state(new_mst_state, + old_payload->port); + new_payload->vc_start_slot = old_payload->vc_start_slot; + } } } EXPORT_SYMBOL(drm_dp_mst_atomic_wait_for_dependencies); @@ -4679,119 +4505,8 @@ void drm_dp_mst_update_slots(struct drm_dp_mst_topology_state *mst_state, uint8_ } EXPORT_SYMBOL(drm_dp_mst_update_slots); -/** - * drm_dp_mst_allocate_vcpi() - Allocate a virtual channel - * @mgr: manager for this port - * @port: port to allocate a virtual channel for. - * @pbn: payload bandwidth number to request - * @slots: returned number of slots for this PBN. - */ -bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_port *port, int pbn, int slots) -{ - int ret; - - if (slots < 0) - return false; - - port = drm_dp_mst_topology_get_port_validated(mgr, port); - if (!port) - return false; - - if (port->vcpi.vcpi > 0) { - drm_dbg_kms(mgr->dev, - "payload: vcpi %d already allocated for pbn %d - requested pbn %d\n", - port->vcpi.vcpi, port->vcpi.pbn, pbn); - if (pbn == port->vcpi.pbn) { - drm_dp_mst_topology_put_port(port); - return true; - } - } - - ret = drm_dp_init_vcpi(mgr, &port->vcpi, pbn, slots); - if (ret) { - drm_dbg_kms(mgr->dev, "failed to init time slots=%d ret=%d\n", - DIV_ROUND_UP(pbn, mgr->pbn_div), ret); - drm_dp_mst_topology_put_port(port); - goto out; - } - drm_dbg_kms(mgr->dev, "initing vcpi for pbn=%d slots=%d\n", pbn, port->vcpi.num_slots); - - /* Keep port allocated until its payload has been removed */ - drm_dp_mst_get_port_malloc(port); - drm_dp_mst_topology_put_port(port); - return true; -out: - return false; -} -EXPORT_SYMBOL(drm_dp_mst_allocate_vcpi); - -int drm_dp_mst_get_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port) -{ - int slots = 0; - - port = drm_dp_mst_topology_get_port_validated(mgr, port); - if (!port) - return slots; - - slots = port->vcpi.num_slots; - drm_dp_mst_topology_put_port(port); - return slots; -} -EXPORT_SYMBOL(drm_dp_mst_get_vcpi_slots); - -/** - * drm_dp_mst_reset_vcpi_slots() - Reset number of slots to 0 for VCPI - * @mgr: manager for this port - * @port: unverified pointer to a port. - * - * This just resets the number of slots for the ports VCPI for later programming. - */ -void drm_dp_mst_reset_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port) -{ - /* - * A port with VCPI will remain allocated until its VCPI is - * released, no verified ref needed - */ - - port->vcpi.num_slots = 0; -} -EXPORT_SYMBOL(drm_dp_mst_reset_vcpi_slots); - -/** - * drm_dp_mst_deallocate_vcpi() - deallocate a VCPI - * @mgr: manager for this port - * @port: port to deallocate vcpi for - * - * This can be called unconditionally, regardless of whether - * drm_dp_mst_allocate_vcpi() succeeded or not. - */ -void drm_dp_mst_deallocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_port *port) -{ - bool skip; - - if (!port->vcpi.vcpi) - return; - - mutex_lock(&mgr->lock); - skip = !drm_dp_mst_port_downstream_of_branch(port, mgr->mst_primary); - mutex_unlock(&mgr->lock); - - if (skip) - return; - - drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi); - port->vcpi.num_slots = 0; - port->vcpi.pbn = 0; - port->vcpi.aligned_pbn = 0; - port->vcpi.vcpi = 0; - drm_dp_mst_put_port_malloc(port); -} -EXPORT_SYMBOL(drm_dp_mst_deallocate_vcpi); - static int drm_dp_dpcd_write_payload(struct drm_dp_mst_topology_mgr *mgr, - int id, struct drm_dp_payload *payload) + int id, u8 start_slot, u8 num_slots) { u8 payload_alloc[3], status; int ret; @@ -4801,8 +4516,8 @@ static int drm_dp_dpcd_write_payload(struct drm_dp_mst_topology_mgr *mgr, DP_PAYLOAD_TABLE_UPDATED); payload_alloc[0] = id; - payload_alloc[1] = payload->start_slot; - payload_alloc[2] = payload->num_slots; + payload_alloc[1] = start_slot; + payload_alloc[2] = num_slots; ret = drm_dp_dpcd_write(mgr->aux, DP_PAYLOAD_ALLOCATE_SET, payload_alloc, 3); if (ret != 3) { @@ -5017,8 +4732,9 @@ static void fetch_monitor_name(struct drm_dp_mst_topology_mgr *mgr, void drm_dp_mst_dump_topology(struct seq_file *m, struct drm_dp_mst_topology_mgr *mgr) { - int i; - struct drm_dp_mst_port *port; + struct drm_dp_mst_topology_state *state; + struct drm_dp_mst_atomic_payload *payload; + int i, ret; mutex_lock(&mgr->lock); if (mgr->mst_primary) @@ -5027,36 +4743,35 @@ void drm_dp_mst_dump_topology(struct seq_file *m, /* dump VCPIs */ mutex_unlock(&mgr->lock); - mutex_lock(&mgr->payload_lock); - seq_printf(m, "\n*** VCPI Info ***\n"); - seq_printf(m, "payload_mask: %lx, vcpi_mask: %lx, max_payloads: %d\n", mgr->payload_mask, mgr->vcpi_mask, mgr->max_payloads); + ret = drm_modeset_lock_single_interruptible(&mgr->base.lock); + if (ret < 0) + return; - seq_printf(m, "\n| idx | port # | vcp_id | # slots | sink name |\n"); + state = to_drm_dp_mst_topology_state(mgr->base.state); + seq_printf(m, "\n*** Atomic state info ***\n"); + seq_printf(m, "payload_mask: %x, max_payloads: %d, start_slot: %u, pbn_div: %d\n", + state->payload_mask, mgr->max_payloads, state->start_slot, state->pbn_div); + + seq_printf(m, "\n| idx | port | vcpi | slots | pbn | dsc | sink name |\n"); for (i = 0; i < mgr->max_payloads; i++) { - if (mgr->proposed_vcpis[i]) { + list_for_each_entry(payload, &state->payloads, next) { char name[14]; - port = container_of(mgr->proposed_vcpis[i], struct drm_dp_mst_port, vcpi); - fetch_monitor_name(mgr, port, name, sizeof(name)); - seq_printf(m, "%10d%10d%10d%10d%20s\n", + if (payload->vcpi != i || payload->delete) + continue; + + fetch_monitor_name(mgr, payload->port, name, sizeof(name)); + seq_printf(m, " %5d %6d %6d %02d - %02d %5d %5s %19s\n", i, - port->port_num, - port->vcpi.vcpi, - port->vcpi.num_slots, + payload->port->port_num, + payload->vcpi, + payload->vc_start_slot, + payload->vc_start_slot + payload->time_slots - 1, + payload->pbn, + payload->dsc_enabled ? "Y" : "N", (*name != 0) ? name : "Unknown"); - } else - seq_printf(m, "%6d - Unused\n", i); + } } - seq_printf(m, "\n*** Payload Info ***\n"); - seq_printf(m, "| idx | state | start slot | # slots |\n"); - for (i = 0; i < mgr->max_payloads; i++) { - seq_printf(m, "%10d%10d%15d%10d\n", - i, - mgr->payloads[i].payload_state, - mgr->payloads[i].start_slot, - mgr->payloads[i].num_slots); - } - mutex_unlock(&mgr->payload_lock); seq_printf(m, "\n*** DPCD Info ***\n"); mutex_lock(&mgr->lock); @@ -5102,7 +4817,7 @@ void drm_dp_mst_dump_topology(struct seq_file *m, out: mutex_unlock(&mgr->lock); - + drm_modeset_unlock(&mgr->base.lock); } EXPORT_SYMBOL(drm_dp_mst_dump_topology); @@ -5423,9 +5138,22 @@ drm_dp_mst_atomic_check_payload_alloc_limits(struct drm_dp_mst_topology_mgr *mgr mgr, mst_state, mgr->max_payloads); return -EINVAL; } + + /* Assign a VCPI */ + if (!payload->vcpi) { + payload->vcpi = ffz(mst_state->payload_mask) + 1; + drm_dbg_atomic(mgr->dev, "[MST PORT:%p] assigned VCPI #%d\n", + payload->port, payload->vcpi); + mst_state->payload_mask |= BIT(payload->vcpi - 1); + } } - drm_dbg_atomic(mgr->dev, "[MST MGR:%p] mst state %p TU avail=%d used=%d\n", - mgr, mst_state, avail_slots, mst_state->total_avail_slots - avail_slots); + + if (!payload_count) + mst_state->pbn_div = 0; + + drm_dbg_atomic(mgr->dev, "[MST MGR:%p] mst state %p TU pbn_div=%d avail=%d used=%d\n", + mgr, mst_state, mst_state->pbn_div, avail_slots, + mst_state->total_avail_slots - avail_slots); return 0; } @@ -5496,7 +5224,6 @@ EXPORT_SYMBOL(drm_dp_mst_add_affected_dsc_crtcs); * @state: Pointer to the new drm_atomic_state * @port: Pointer to the affected MST Port * @pbn: Newly recalculated bw required for link with DSC enabled - * @pbn_div: Divider to calculate correct number of pbn per slot * @enable: Boolean flag to enable or disable DSC on the port * * This function enables DSC on the given Port @@ -5507,8 +5234,7 @@ EXPORT_SYMBOL(drm_dp_mst_add_affected_dsc_crtcs); */ int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, struct drm_dp_mst_port *port, - int pbn, int pbn_div, - bool enable) + int pbn, bool enable) { struct drm_dp_mst_topology_state *mst_state; struct drm_dp_mst_atomic_payload *payload; @@ -5534,7 +5260,7 @@ int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, } if (enable) { - time_slots = drm_dp_atomic_find_time_slots(state, port->mgr, port, pbn, pbn_div); + time_slots = drm_dp_atomic_find_time_slots(state, port->mgr, port, pbn); drm_dbg_atomic(state->dev, "[MST PORT:%p] Enabling DSC flag, reallocating %d time slots on the port\n", port, time_slots); @@ -5547,6 +5273,7 @@ int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, return time_slots; } EXPORT_SYMBOL(drm_dp_mst_atomic_enable_dsc); + /** * drm_dp_mst_atomic_check - Check that the new state of an MST topology in an * atomic update is valid @@ -5604,7 +5331,6 @@ EXPORT_SYMBOL(drm_dp_mst_topology_state_funcs); /** * drm_atomic_get_mst_topology_state: get MST topology state - * * @state: global atomic state * @mgr: MST topology manager, also the private object in this case * @@ -5623,6 +5349,31 @@ struct drm_dp_mst_topology_state *drm_atomic_get_mst_topology_state(struct drm_a } EXPORT_SYMBOL(drm_atomic_get_mst_topology_state); +/** + * drm_atomic_get_new_mst_topology_state: get new MST topology state in atomic state, if any + * @state: global atomic state + * @mgr: MST topology manager, also the private object in this case + * + * This function wraps drm_atomic_get_priv_obj_state() passing in the MST atomic + * state vtable so that the private object state returned is that of a MST + * topology object. + * + * Returns: + * + * The MST topology state, or NULL if there's no topology state for this MST mgr + * in the global atomic state + */ +struct drm_dp_mst_topology_state * +drm_atomic_get_new_mst_topology_state(struct drm_atomic_state *state, + struct drm_dp_mst_topology_mgr *mgr) +{ + struct drm_private_state *priv_state = + drm_atomic_get_new_private_obj_state(state, &mgr->base); + + return priv_state ? to_dp_mst_topology_state(priv_state) : NULL; +} +EXPORT_SYMBOL(drm_atomic_get_new_mst_topology_state); + /** * drm_dp_mst_topology_mgr_init - initialise a topology manager * @mgr: manager struct to initialise @@ -5630,8 +5381,6 @@ EXPORT_SYMBOL(drm_atomic_get_mst_topology_state); * @aux: DP helper aux channel to talk to this device * @max_dpcd_transaction_bytes: hw specific DPCD transaction limit * @max_payloads: maximum number of payloads this GPU can source - * @max_lane_count: maximum number of lanes this GPU supports - * @max_link_rate: maximum link rate per lane this GPU supports in kHz * @conn_base_id: the connector object ID the MST device is connected to. * * Return 0 for success, or negative error code on failure @@ -5639,14 +5388,12 @@ EXPORT_SYMBOL(drm_atomic_get_mst_topology_state); int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, struct drm_device *dev, struct drm_dp_aux *aux, int max_dpcd_transaction_bytes, int max_payloads, - int max_lane_count, int max_link_rate, int conn_base_id) { struct drm_dp_mst_topology_state *mst_state; mutex_init(&mgr->lock); mutex_init(&mgr->qlock); - mutex_init(&mgr->payload_lock); mutex_init(&mgr->delayed_destroy_lock); mutex_init(&mgr->up_req_lock); mutex_init(&mgr->probe_lock); @@ -5676,19 +5423,7 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, mgr->aux = aux; mgr->max_dpcd_transaction_bytes = max_dpcd_transaction_bytes; mgr->max_payloads = max_payloads; - mgr->max_lane_count = max_lane_count; - mgr->max_link_rate = max_link_rate; mgr->conn_base_id = conn_base_id; - if (max_payloads + 1 > sizeof(mgr->payload_mask) * 8 || - max_payloads + 1 > sizeof(mgr->vcpi_mask) * 8) - return -EINVAL; - mgr->payloads = kcalloc(max_payloads, sizeof(struct drm_dp_payload), GFP_KERNEL); - if (!mgr->payloads) - return -ENOMEM; - mgr->proposed_vcpis = kcalloc(max_payloads, sizeof(struct drm_dp_vcpi *), GFP_KERNEL); - if (!mgr->proposed_vcpis) - return -ENOMEM; - set_bit(0, &mgr->payload_mask); mst_state = kzalloc(sizeof(*mst_state), GFP_KERNEL); if (mst_state == NULL) @@ -5721,19 +5456,12 @@ void drm_dp_mst_topology_mgr_destroy(struct drm_dp_mst_topology_mgr *mgr) destroy_workqueue(mgr->delayed_destroy_wq); mgr->delayed_destroy_wq = NULL; } - mutex_lock(&mgr->payload_lock); - kfree(mgr->payloads); - mgr->payloads = NULL; - kfree(mgr->proposed_vcpis); - mgr->proposed_vcpis = NULL; - mutex_unlock(&mgr->payload_lock); mgr->dev = NULL; mgr->aux = NULL; drm_atomic_private_obj_fini(&mgr->base); mgr->funcs = NULL; mutex_destroy(&mgr->delayed_destroy_lock); - mutex_destroy(&mgr->payload_lock); mutex_destroy(&mgr->qlock); mutex_destroy(&mgr->lock); mutex_destroy(&mgr->up_req_lock); diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 1b067cd73261..13abe2b2170e 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -52,6 +52,7 @@ static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder, struct drm_atomic_state *state = crtc_state->uapi.state; struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder); struct intel_dp *intel_dp = &intel_mst->primary->dp; + struct drm_dp_mst_topology_state *mst_state; struct intel_connector *connector = to_intel_connector(conn_state->connector); struct drm_i915_private *i915 = to_i915(connector->base.dev); @@ -60,22 +61,28 @@ static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder, bool constant_n = drm_dp_has_quirk(&intel_dp->desc, DP_DPCD_QUIRK_CONSTANT_N); int bpp, slots = -EINVAL; + mst_state = drm_atomic_get_mst_topology_state(state, &intel_dp->mst_mgr); + if (IS_ERR(mst_state)) + return PTR_ERR(mst_state); + crtc_state->lane_count = limits->max_lane_count; crtc_state->port_clock = limits->max_rate; + // TODO: Handle pbn_div changes by adding a new MST helper + if (!mst_state->pbn_div) { + mst_state->pbn_div = drm_dp_get_vc_payload_bw(&intel_dp->mst_mgr, + limits->max_rate, + limits->max_lane_count); + } + for (bpp = limits->max_bpp; bpp >= limits->min_bpp; bpp -= 2 * 3) { crtc_state->pipe_bpp = bpp; crtc_state->pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, crtc_state->pipe_bpp, false); - slots = drm_dp_atomic_find_time_slots(state, &intel_dp->mst_mgr, - connector->port, - crtc_state->pbn, - drm_dp_get_vc_payload_bw(&intel_dp->mst_mgr, - crtc_state->port_clock, - crtc_state->lane_count)); + connector->port, crtc_state->pbn); if (slots == -EDEADLK) return slots; if (slots >= 0) @@ -360,21 +367,17 @@ static void intel_mst_disable_dp(struct intel_atomic_state *state, struct intel_dp *intel_dp = &dig_port->dp; struct intel_connector *connector = to_intel_connector(old_conn_state->connector); + struct drm_dp_mst_topology_state *mst_state = + drm_atomic_get_mst_topology_state(&state->base, &intel_dp->mst_mgr); struct drm_i915_private *i915 = to_i915(connector->base.dev); - int start_slot = intel_dp_is_uhbr(old_crtc_state) ? 0 : 1; - int ret; drm_dbg_kms(&i915->drm, "active links %d\n", intel_dp->active_mst_links); intel_hdcp_disable(intel_mst->connector); - drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, connector->port); - - ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr, start_slot); - if (ret) { - drm_dbg_kms(&i915->drm, "failed to update payload %d\n", ret); - } + drm_dp_remove_payload(&intel_dp->mst_mgr, mst_state, + drm_atomic_get_mst_payload_state(mst_state, connector->port)); intel_audio_codec_disable(encoder, old_crtc_state, old_conn_state); } @@ -402,8 +405,6 @@ static void intel_mst_post_disable_dp(struct intel_atomic_state *state, intel_disable_transcoder(old_crtc_state); - drm_dp_update_payload_part2(&intel_dp->mst_mgr); - clear_act_sent(encoder, old_crtc_state); intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder), @@ -411,8 +412,6 @@ static void intel_mst_post_disable_dp(struct intel_atomic_state *state, wait_for_act_sent(encoder, old_crtc_state); - drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, connector->port); - intel_ddi_disable_transcoder_func(old_crtc_state); if (DISPLAY_VER(dev_priv) >= 9) @@ -479,7 +478,8 @@ static void intel_mst_pre_enable_dp(struct intel_atomic_state *state, struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_connector *connector = to_intel_connector(conn_state->connector); - int start_slot = intel_dp_is_uhbr(pipe_config) ? 0 : 1; + struct drm_dp_mst_topology_state *mst_state = + drm_atomic_get_new_mst_topology_state(&state->base, &intel_dp->mst_mgr); int ret; bool first_mst_stream; @@ -505,16 +505,13 @@ static void intel_mst_pre_enable_dp(struct intel_atomic_state *state, dig_port->base.pre_enable(state, &dig_port->base, pipe_config, NULL); - ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr, - connector->port, - pipe_config->pbn, - pipe_config->dp_m_n.tu); - if (!ret) - drm_err(&dev_priv->drm, "failed to allocate vcpi\n"); - intel_dp->active_mst_links++; - ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr, start_slot); + ret = drm_dp_add_payload_part1(&intel_dp->mst_mgr, mst_state, + drm_atomic_get_mst_payload_state(mst_state, connector->port)); + if (ret < 0) + drm_err(&dev_priv->drm, "Failed to create MST payload for %s: %d\n", + connector->base.name, ret); /* * Before Gen 12 this is not done as part of @@ -537,7 +534,10 @@ static void intel_mst_enable_dp(struct intel_atomic_state *state, struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder); struct intel_digital_port *dig_port = intel_mst->primary; struct intel_dp *intel_dp = &dig_port->dp; + struct intel_connector *connector = to_intel_connector(conn_state->connector); struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + struct drm_dp_mst_topology_state *mst_state = + drm_atomic_get_new_mst_topology_state(&state->base, &intel_dp->mst_mgr); enum transcoder trans = pipe_config->cpu_transcoder; drm_WARN_ON(&dev_priv->drm, pipe_config->has_pch_encoder); @@ -565,7 +565,8 @@ static void intel_mst_enable_dp(struct intel_atomic_state *state, wait_for_act_sent(encoder, pipe_config); - drm_dp_update_payload_part2(&intel_dp->mst_mgr); + drm_dp_add_payload_part2(&intel_dp->mst_mgr, &state->base, + drm_atomic_get_mst_payload_state(mst_state, connector->port)); if (DISPLAY_VER(dev_priv) >= 12 && pipe_config->fec_enable) intel_de_rmw(dev_priv, CHICKEN_TRANS(trans), 0, @@ -949,8 +950,6 @@ intel_dp_mst_encoder_init(struct intel_digital_port *dig_port, int conn_base_id) struct intel_dp *intel_dp = &dig_port->dp; enum port port = dig_port->base.port; int ret; - int max_source_rate = - intel_dp->source_rates[intel_dp->num_source_rates - 1]; if (!HAS_DP_MST(i915) || intel_dp_is_edp(intel_dp)) return 0; @@ -966,10 +965,7 @@ intel_dp_mst_encoder_init(struct intel_digital_port *dig_port, int conn_base_id) /* create encoders */ intel_dp_create_fake_mst_encoders(dig_port); ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, &i915->drm, - &intel_dp->aux, 16, 3, - dig_port->max_lanes, - max_source_rate, - conn_base_id); + &intel_dp->aux, 16, 3, conn_base_id); if (ret) { intel_dp->mst_mgr.cbs = NULL; return ret; diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c index 8ea66a2e1b09..7dbc9f0bb24f 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c @@ -30,8 +30,30 @@ static int intel_conn_to_vcpi(struct intel_connector *connector) { + struct drm_dp_mst_topology_mgr *mgr; + struct drm_dp_mst_atomic_payload *payload; + struct drm_dp_mst_topology_state *mst_state; + int vcpi = 0; + /* For HDMI this is forced to be 0x0. For DP SST also this is 0x0. */ - return connector->port ? connector->port->vcpi.vcpi : 0; + if (!connector->port) + return 0; + mgr = connector->port->mgr; + + drm_modeset_lock(&mgr->base.lock, NULL); + mst_state = to_drm_dp_mst_topology_state(mgr->base.state); + payload = drm_atomic_get_mst_payload_state(mst_state, connector->port); + if (drm_WARN_ON(mgr->dev, !payload)) + goto out; + + vcpi = payload->vcpi; + if (drm_WARN_ON(mgr->dev, vcpi < 0)) { + vcpi = 0; + goto out; + } +out: + drm_modeset_unlock(&mgr->base.lock); + return vcpi; } /* diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index 7e9a0b50bb42..33c97d510999 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -932,6 +932,7 @@ struct nv50_msto { struct nv50_head *head; struct nv50_mstc *mstc; bool disabled; + bool enabled; }; struct nouveau_encoder *nv50_real_outp(struct drm_encoder *encoder) @@ -947,57 +948,37 @@ struct nouveau_encoder *nv50_real_outp(struct drm_encoder *encoder) return msto->mstc->mstm->outp; } -static struct drm_dp_payload * -nv50_msto_payload(struct nv50_msto *msto) -{ - struct nouveau_drm *drm = nouveau_drm(msto->encoder.dev); - struct nv50_mstc *mstc = msto->mstc; - struct nv50_mstm *mstm = mstc->mstm; - int vcpi = mstc->port->vcpi.vcpi, i; - - WARN_ON(!mutex_is_locked(&mstm->mgr.payload_lock)); - - NV_ATOMIC(drm, "%s: vcpi %d\n", msto->encoder.name, vcpi); - for (i = 0; i < mstm->mgr.max_payloads; i++) { - struct drm_dp_payload *payload = &mstm->mgr.payloads[i]; - NV_ATOMIC(drm, "%s: %d: vcpi %d start 0x%02x slots 0x%02x\n", - mstm->outp->base.base.name, i, payload->vcpi, - payload->start_slot, payload->num_slots); - } - - for (i = 0; i < mstm->mgr.max_payloads; i++) { - struct drm_dp_payload *payload = &mstm->mgr.payloads[i]; - if (payload->vcpi == vcpi) - return payload; - } - - return NULL; -} - static void -nv50_msto_cleanup(struct nv50_msto *msto) +nv50_msto_cleanup(struct drm_atomic_state *state, + struct drm_dp_mst_topology_state *mst_state, + struct drm_dp_mst_topology_mgr *mgr, + struct nv50_msto *msto) { struct nouveau_drm *drm = nouveau_drm(msto->encoder.dev); - struct nv50_mstc *mstc = msto->mstc; - struct nv50_mstm *mstm = mstc->mstm; - - if (!msto->disabled) - return; + struct drm_dp_mst_atomic_payload *payload = + drm_atomic_get_mst_payload_state(mst_state, msto->mstc->port); NV_ATOMIC(drm, "%s: msto cleanup\n", msto->encoder.name); - drm_dp_mst_deallocate_vcpi(&mstm->mgr, mstc->port); - - msto->mstc = NULL; - msto->disabled = false; + if (msto->disabled) { + msto->mstc = NULL; + msto->disabled = false; + } else if (msto->enabled) { + drm_dp_add_payload_part2(mgr, state, payload); + msto->enabled = false; + } } static void -nv50_msto_prepare(struct nv50_msto *msto) +nv50_msto_prepare(struct drm_atomic_state *state, + struct drm_dp_mst_topology_state *mst_state, + struct drm_dp_mst_topology_mgr *mgr, + struct nv50_msto *msto) { struct nouveau_drm *drm = nouveau_drm(msto->encoder.dev); struct nv50_mstc *mstc = msto->mstc; struct nv50_mstm *mstm = mstc->mstm; + struct drm_dp_mst_atomic_payload *payload; struct { struct nv50_disp_mthd_v1 base; struct nv50_disp_sor_dp_mst_vcpi_v0 vcpi; @@ -1009,17 +990,21 @@ nv50_msto_prepare(struct nv50_msto *msto) (0x0100 << msto->head->base.index), }; - mutex_lock(&mstm->mgr.payload_lock); - NV_ATOMIC(drm, "%s: msto prepare\n", msto->encoder.name); - if (mstc->port->vcpi.vcpi > 0) { - struct drm_dp_payload *payload = nv50_msto_payload(msto); - if (payload) { - args.vcpi.start_slot = payload->start_slot; - args.vcpi.num_slots = payload->num_slots; - args.vcpi.pbn = mstc->port->vcpi.pbn; - args.vcpi.aligned_pbn = mstc->port->vcpi.aligned_pbn; - } + + payload = drm_atomic_get_mst_payload_state(mst_state, mstc->port); + + // TODO: Figure out if we want to do a better job of handling VCPI allocation failures here? + if (msto->disabled) { + drm_dp_remove_payload(mgr, mst_state, payload); + } else { + if (msto->enabled) + drm_dp_add_payload_part1(mgr, mst_state, payload); + + args.vcpi.start_slot = payload->vc_start_slot; + args.vcpi.num_slots = payload->time_slots; + args.vcpi.pbn = payload->pbn; + args.vcpi.aligned_pbn = payload->time_slots * mst_state->pbn_div; } NV_ATOMIC(drm, "%s: %s: %02x %02x %04x %04x\n", @@ -1028,7 +1013,6 @@ nv50_msto_prepare(struct nv50_msto *msto) args.vcpi.pbn, args.vcpi.aligned_pbn); nvif_mthd(&drm->display->disp.object, 0, &args, sizeof(args)); - mutex_unlock(&mstm->mgr.payload_lock); } static int @@ -1038,6 +1022,7 @@ nv50_msto_atomic_check(struct drm_encoder *encoder, { struct drm_atomic_state *state = crtc_state->state; struct drm_connector *connector = conn_state->connector; + struct drm_dp_mst_topology_state *mst_state; struct nv50_mstc *mstc = nv50_mstc(connector); struct nv50_mstm *mstm = mstc->mstm; struct nv50_head_atom *asyh = nv50_head_atom(crtc_state); @@ -1065,8 +1050,18 @@ nv50_msto_atomic_check(struct drm_encoder *encoder, false); } - slots = drm_dp_atomic_find_time_slots(state, &mstm->mgr, mstc->port, - asyh->dp.pbn, 0); + mst_state = drm_atomic_get_mst_topology_state(state, &mstm->mgr); + if (IS_ERR(mst_state)) + return PTR_ERR(mst_state); + + if (!mst_state->pbn_div) { + struct nouveau_encoder *outp = mstc->mstm->outp; + + mst_state->pbn_div = drm_dp_get_vc_payload_bw(&mstm->mgr, + outp->dp.link_bw, outp->dp.link_nr); + } + + slots = drm_dp_atomic_find_time_slots(state, &mstm->mgr, mstc->port, asyh->dp.pbn); if (slots < 0) return slots; @@ -1098,7 +1093,6 @@ nv50_msto_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *st struct drm_connector *connector; struct drm_connector_list_iter conn_iter; u8 proto; - bool r; drm_connector_list_iter_begin(encoder->dev, &conn_iter); drm_for_each_connector_iter(connector, &conn_iter) { @@ -1113,10 +1107,6 @@ nv50_msto_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *st if (WARN_ON(!mstc)) return; - r = drm_dp_mst_allocate_vcpi(&mstm->mgr, mstc->port, asyh->dp.pbn, asyh->dp.tu); - if (!r) - DRM_DEBUG_KMS("Failed to allocate VCPI\n"); - if (!mstm->links++) nv50_outp_acquire(mstm->outp, false /*XXX: MST audio.*/); @@ -1129,6 +1119,7 @@ nv50_msto_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *st nv50_dp_bpc_to_depth(asyh->or.bpc)); msto->mstc = mstc; + msto->enabled = true; mstm->modified = true; } @@ -1139,8 +1130,6 @@ nv50_msto_atomic_disable(struct drm_encoder *encoder, struct drm_atomic_state *s struct nv50_mstc *mstc = msto->mstc; struct nv50_mstm *mstm = mstc->mstm; - drm_dp_mst_reset_vcpi_slots(&mstm->mgr, mstc->port); - mstm->outp->update(mstm->outp, msto->head->base.index, NULL, 0, 0); mstm->modified = true; if (!--mstm->links) @@ -1360,7 +1349,9 @@ nv50_mstc_new(struct nv50_mstm *mstm, struct drm_dp_mst_port *port, } static void -nv50_mstm_cleanup(struct nv50_mstm *mstm) +nv50_mstm_cleanup(struct drm_atomic_state *state, + struct drm_dp_mst_topology_state *mst_state, + struct nv50_mstm *mstm) { struct nouveau_drm *drm = nouveau_drm(mstm->outp->base.base.dev); struct drm_encoder *encoder; @@ -1368,14 +1359,12 @@ nv50_mstm_cleanup(struct nv50_mstm *mstm) NV_ATOMIC(drm, "%s: mstm cleanup\n", mstm->outp->base.base.name); drm_dp_check_act_status(&mstm->mgr); - drm_dp_update_payload_part2(&mstm->mgr); - drm_for_each_encoder(encoder, mstm->outp->base.base.dev) { if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST) { struct nv50_msto *msto = nv50_msto(encoder); struct nv50_mstc *mstc = msto->mstc; if (mstc && mstc->mstm == mstm) - nv50_msto_cleanup(msto); + nv50_msto_cleanup(state, mst_state, &mstm->mgr, msto); } } @@ -1383,20 +1372,34 @@ nv50_mstm_cleanup(struct nv50_mstm *mstm) } static void -nv50_mstm_prepare(struct nv50_mstm *mstm) +nv50_mstm_prepare(struct drm_atomic_state *state, + struct drm_dp_mst_topology_state *mst_state, + struct nv50_mstm *mstm) { struct nouveau_drm *drm = nouveau_drm(mstm->outp->base.base.dev); struct drm_encoder *encoder; NV_ATOMIC(drm, "%s: mstm prepare\n", mstm->outp->base.base.name); - drm_dp_update_payload_part1(&mstm->mgr, 1); + /* Disable payloads first */ drm_for_each_encoder(encoder, mstm->outp->base.base.dev) { if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST) { struct nv50_msto *msto = nv50_msto(encoder); struct nv50_mstc *mstc = msto->mstc; - if (mstc && mstc->mstm == mstm) - nv50_msto_prepare(msto); + if (mstc && mstc->mstm == mstm && msto->disabled) + nv50_msto_prepare(state, mst_state, &mstm->mgr, msto); + } + } + + /* Add payloads for new heads, while also updating the start slots of any unmodified (but + * active) heads that may have had their VC slots shifted left after the previous step + */ + drm_for_each_encoder(encoder, mstm->outp->base.base.dev) { + if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST) { + struct nv50_msto *msto = nv50_msto(encoder); + struct nv50_mstc *mstc = msto->mstc; + if (mstc && mstc->mstm == mstm && !msto->disabled) + nv50_msto_prepare(state, mst_state, &mstm->mgr, msto); } } @@ -1593,9 +1596,7 @@ nv50_mstm_new(struct nouveau_encoder *outp, struct drm_dp_aux *aux, int aux_max, mstm->mgr.cbs = &nv50_mstm; ret = drm_dp_mst_topology_mgr_init(&mstm->mgr, dev, aux, aux_max, - max_payloads, outp->dcb->dpconf.link_nr, - drm_dp_bw_code_to_link_rate(outp->dcb->dpconf.link_bw), - conn_base_id); + max_payloads, conn_base_id); if (ret) return ret; @@ -2047,20 +2048,20 @@ nv50_pior_create(struct drm_connector *connector, struct dcb_output *dcbe) static void nv50_disp_atomic_commit_core(struct drm_atomic_state *state, u32 *interlock) { + struct drm_dp_mst_topology_mgr *mgr; + struct drm_dp_mst_topology_state *mst_state; struct nouveau_drm *drm = nouveau_drm(state->dev); struct nv50_disp *disp = nv50_disp(drm->dev); struct nv50_core *core = disp->core; struct nv50_mstm *mstm; - struct drm_encoder *encoder; + int i; NV_ATOMIC(drm, "commit core %08x\n", interlock[NV50_DISP_INTERLOCK_BASE]); - drm_for_each_encoder(encoder, drm->dev) { - if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST) { - mstm = nouveau_encoder(encoder)->dp.mstm; - if (mstm && mstm->modified) - nv50_mstm_prepare(mstm); - } + for_each_new_mst_mgr_in_state(state, mgr, mst_state, i) { + mstm = nv50_mstm(mgr); + if (mstm->modified) + nv50_mstm_prepare(state, mst_state, mstm); } core->func->ntfy_init(disp->sync, NV50_DISP_CORE_NTFY); @@ -2069,12 +2070,10 @@ nv50_disp_atomic_commit_core(struct drm_atomic_state *state, u32 *interlock) disp->core->chan.base.device)) NV_ERROR(drm, "core notifier timeout\n"); - drm_for_each_encoder(encoder, drm->dev) { - if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST) { - mstm = nouveau_encoder(encoder)->dp.mstm; - if (mstm && mstm->modified) - nv50_mstm_cleanup(mstm); - } + for_each_new_mst_mgr_in_state(state, mgr, mst_state, i) { + mstm = nv50_mstm(mgr); + if (mstm->modified) + nv50_mstm_cleanup(state, mst_state, mstm); } } diff --git a/include/drm/display/drm_dp_mst_helper.h b/include/drm/display/drm_dp_mst_helper.h index 8b847836a0b4..43f58cef4eec 100644 --- a/include/drm/display/drm_dp_mst_helper.h +++ b/include/drm/display/drm_dp_mst_helper.h @@ -48,20 +48,6 @@ struct drm_dp_mst_topology_ref_history { struct drm_dp_mst_branch; -/** - * struct drm_dp_vcpi - Virtual Channel Payload Identifier - * @vcpi: Virtual channel ID. - * @pbn: Payload Bandwidth Number for this channel - * @aligned_pbn: PBN aligned with slot size - * @num_slots: number of slots for this PBN - */ -struct drm_dp_vcpi { - int vcpi; - int pbn; - int aligned_pbn; - int num_slots; -}; - /** * struct drm_dp_mst_port - MST port * @port_num: port number @@ -142,7 +128,6 @@ struct drm_dp_mst_port { struct drm_dp_aux aux; /* i2c bus for this port? */ struct drm_dp_mst_branch *parent; - struct drm_dp_vcpi vcpi; struct drm_connector *connector; struct drm_dp_mst_topology_mgr *mgr; @@ -527,19 +512,6 @@ struct drm_dp_mst_topology_cbs { void (*poll_hpd_irq)(struct drm_dp_mst_topology_mgr *mgr); }; -#define DP_MAX_PAYLOAD (sizeof(unsigned long) * 8) - -#define DP_PAYLOAD_LOCAL 1 -#define DP_PAYLOAD_REMOTE 2 -#define DP_PAYLOAD_DELETE_LOCAL 3 - -struct drm_dp_payload { - int payload_state; - int start_slot; - int num_slots; - int vcpi; -}; - #define to_dp_mst_topology_state(x) container_of(x, struct drm_dp_mst_topology_state, base) /** @@ -552,6 +524,34 @@ struct drm_dp_mst_atomic_payload { /** @port: The MST port assigned to this payload */ struct drm_dp_mst_port *port; + /** + * @vc_start_slot: The time slot that this payload starts on. Because payload start slots + * can't be determined ahead of time, the contents of this value are UNDEFINED at atomic + * check time. This shouldn't usually matter, as the start slot should never be relevant for + * atomic state computations. + * + * Since this value is determined at commit time instead of check time, this value is + * protected by the MST helpers ensuring that async commits operating on the given topology + * never run in parallel. In the event that a driver does need to read this value (e.g. to + * inform hardware of the starting timeslot for a payload), the driver may either: + * + * * Read this field during the atomic commit after + * drm_dp_mst_atomic_wait_for_dependencies() has been called, which will ensure the + * previous MST states payload start slots have been copied over to the new state. Note + * that a new start slot won't be assigned/removed from this payload until + * drm_dp_add_payload_part1()/drm_dp_remove_payload() have been called. + * * Acquire the MST modesetting lock, and then wait for any pending MST-related commits to + * get committed to hardware by calling drm_crtc_commit_wait() on each of the + * &drm_crtc_commit structs in &drm_dp_mst_topology_state.commit_deps. + * + * If neither of the two above solutions suffice (e.g. the driver needs to read the start + * slot in the middle of an atomic commit without waiting for some reason), then drivers + * should cache this value themselves after changing payloads. + */ + s8 vc_start_slot; + + /** @vcpi: The Virtual Channel Payload Identifier */ + u8 vcpi; /** * @time_slots: * The number of timeslots allocated to this payload from the source DP Tx to @@ -579,8 +579,6 @@ struct drm_dp_mst_topology_state { /** @base: Base private state for atomic */ struct drm_private_state base; - /** @payloads: The list of payloads being created/destroyed in this state */ - struct list_head payloads; /** @mgr: The topology manager */ struct drm_dp_mst_topology_mgr *mgr; @@ -597,10 +595,21 @@ struct drm_dp_mst_topology_state { /** @num_commit_deps: The number of CRTC commits in @commit_deps */ size_t num_commit_deps; + /** @payload_mask: A bitmask of allocated VCPIs, used for VCPI assignments */ + u32 payload_mask; + /** @payloads: The list of payloads being created/destroyed in this state */ + struct list_head payloads; + /** @total_avail_slots: The total number of slots this topology can handle (63 or 64) */ u8 total_avail_slots; /** @start_slot: The first usable time slot in this topology (1 or 0) */ u8 start_slot; + + /** + * @pbn_div: The current PBN divisor for this topology. The driver is expected to fill this + * out itself. + */ + int pbn_div; }; #define to_dp_mst_topology_mgr(x) container_of(x, struct drm_dp_mst_topology_mgr, base) @@ -640,14 +649,6 @@ struct drm_dp_mst_topology_mgr { * @max_payloads: maximum number of payloads the GPU can generate. */ int max_payloads; - /** - * @max_lane_count: maximum number of lanes the GPU can drive. - */ - int max_lane_count; - /** - * @max_link_rate: maximum link rate per lane GPU can output, in kHz. - */ - int max_link_rate; /** * @conn_base_id: DRM connector ID this mgr is connected to. Only used * to build the MST connector path value. @@ -690,6 +691,20 @@ struct drm_dp_mst_topology_mgr { */ bool payload_id_table_cleared : 1; + /** + * @payload_count: The number of currently active payloads in hardware. This value is only + * intended to be used internally by MST helpers for payload tracking, and is only safe to + * read/write from the atomic commit (not check) context. + */ + u8 payload_count; + + /** + * @next_start_slot: The starting timeslot to use for new VC payloads. This value is used + * internally by MST helpers for payload tracking, and is only safe to read/write from the + * atomic commit (not check) context. + */ + u8 next_start_slot; + /** * @mst_primary: Pointer to the primary/first branch device. */ @@ -703,10 +718,6 @@ struct drm_dp_mst_topology_mgr { * @sink_count: Sink count from DEVICE_SERVICE_IRQ_VECTOR_ESI0. */ u8 sink_count; - /** - * @pbn_div: PBN to slots divisor. - */ - int pbn_div; /** * @funcs: Atomic helper callbacks @@ -723,32 +734,6 @@ struct drm_dp_mst_topology_mgr { */ struct list_head tx_msg_downq; - /** - * @payload_lock: Protect payload information. - */ - struct mutex payload_lock; - /** - * @proposed_vcpis: Array of pointers for the new VCPI allocation. The - * VCPI structure itself is &drm_dp_mst_port.vcpi, and the size of - * this array is determined by @max_payloads. - */ - struct drm_dp_vcpi **proposed_vcpis; - /** - * @payloads: Array of payloads. The size of this array is determined - * by @max_payloads. - */ - struct drm_dp_payload *payloads; - /** - * @payload_mask: Elements of @payloads actually in use. Since - * reallocation of active outputs isn't possible gaps can be created by - * disabling outputs out of order compared to how they've been enabled. - */ - unsigned long payload_mask; - /** - * @vcpi_mask: Similar to @payload_mask, but for @proposed_vcpis. - */ - unsigned long vcpi_mask; - /** * @tx_waitq: Wait to queue stall for the tx worker. */ @@ -820,9 +805,7 @@ struct drm_dp_mst_topology_mgr { int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, struct drm_device *dev, struct drm_dp_aux *aux, int max_dpcd_transaction_bytes, - int max_payloads, - int max_lane_count, int max_link_rate, - int conn_base_id); + int max_payloads, int conn_base_id); void drm_dp_mst_topology_mgr_destroy(struct drm_dp_mst_topology_mgr *mgr); @@ -845,28 +828,17 @@ int drm_dp_get_vc_payload_bw(const struct drm_dp_mst_topology_mgr *mgr, int drm_dp_calc_pbn_mode(int clock, int bpp, bool dsc); -bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_port *port, int pbn, int slots); - -int drm_dp_mst_get_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port); - - -void drm_dp_mst_reset_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port); - void drm_dp_mst_update_slots(struct drm_dp_mst_topology_state *mst_state, uint8_t link_encoding_cap); -void drm_dp_mst_deallocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_port *port); - - -int drm_dp_find_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, - int pbn); - - -int drm_dp_update_payload_part1(struct drm_dp_mst_topology_mgr *mgr, int start_slot); - - -int drm_dp_update_payload_part2(struct drm_dp_mst_topology_mgr *mgr); +int drm_dp_add_payload_part1(struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_topology_state *mst_state, + struct drm_dp_mst_atomic_payload *payload); +int drm_dp_add_payload_part2(struct drm_dp_mst_topology_mgr *mgr, + struct drm_atomic_state *state, + struct drm_dp_mst_atomic_payload *payload); +void drm_dp_remove_payload(struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_topology_state *mst_state, + struct drm_dp_mst_atomic_payload *payload); int drm_dp_check_act_status(struct drm_dp_mst_topology_mgr *mgr); @@ -888,17 +860,22 @@ int drm_dp_mst_connector_late_register(struct drm_connector *connector, void drm_dp_mst_connector_early_unregister(struct drm_connector *connector, struct drm_dp_mst_port *port); -struct drm_dp_mst_topology_state *drm_atomic_get_mst_topology_state(struct drm_atomic_state *state, - struct drm_dp_mst_topology_mgr *mgr); +struct drm_dp_mst_topology_state * +drm_atomic_get_mst_topology_state(struct drm_atomic_state *state, + struct drm_dp_mst_topology_mgr *mgr); +struct drm_dp_mst_topology_state * +drm_atomic_get_new_mst_topology_state(struct drm_atomic_state *state, + struct drm_dp_mst_topology_mgr *mgr); +struct drm_dp_mst_atomic_payload * +drm_atomic_get_mst_payload_state(struct drm_dp_mst_topology_state *state, + struct drm_dp_mst_port *port); int __must_check drm_dp_atomic_find_time_slots(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_port *port, int pbn, - int pbn_div); + struct drm_dp_mst_port *port, int pbn); int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, struct drm_dp_mst_port *port, - int pbn, int pbn_div, - bool enable); + int pbn, bool enable); int __must_check drm_dp_mst_add_affected_dsc_crtcs(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr); @@ -922,6 +899,12 @@ void drm_dp_mst_put_port_malloc(struct drm_dp_mst_port *port); struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port); +static inline struct drm_dp_mst_topology_state * +to_drm_dp_mst_topology_state(struct drm_private_state *state) +{ + return container_of(state, struct drm_dp_mst_topology_state, base); +} + extern const struct drm_private_state_funcs drm_dp_mst_topology_state_funcs; /** From 227295df4e37de66b61bbb3d1f10436f0acd33cc Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Wed, 24 Aug 2022 18:13:24 +0200 Subject: [PATCH 033/111] drm/vc4: hdmi: unlock mutex when device is unplugged In vc4_hdmi_encoder_{pre,post}_crtc_enable() commit cd00ed5187bf ("drm/vc4: hdmi: Protect device resources after removal") missed to unlock the mutex before returning due to drm_dev_enter() indicating the device being unplugged. Fixes: cd00ed5187bf ("drm/vc4: hdmi: Protect device resources after removal") Signed-off-by: Danilo Krummrich Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20220824161327.330627-2-dakr@redhat.com --- drivers/gpu/drm/vc4/vc4_hdmi.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 84e5a91c2ea7..4d3ff51ad2a8 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -1425,7 +1425,7 @@ static void vc4_hdmi_encoder_pre_crtc_enable(struct drm_encoder *encoder, mutex_lock(&vc4_hdmi->mutex); if (!drm_dev_enter(drm, &idx)) - return; + goto out; if (vc4_hdmi->variant->csc_setup) vc4_hdmi->variant->csc_setup(vc4_hdmi, conn_state, mode); @@ -1436,6 +1436,7 @@ static void vc4_hdmi_encoder_pre_crtc_enable(struct drm_encoder *encoder, drm_dev_exit(idx); +out: mutex_unlock(&vc4_hdmi->mutex); } @@ -1455,7 +1456,7 @@ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder, mutex_lock(&vc4_hdmi->mutex); if (!drm_dev_enter(drm, &idx)) - return; + goto out; spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); @@ -1516,6 +1517,8 @@ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder, vc4_hdmi_enable_scrambling(encoder); drm_dev_exit(idx); + +out: mutex_unlock(&vc4_hdmi->mutex); } From 6acb416bf49f818dbf0aa71aee9f6cae93a505a4 Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Wed, 24 Aug 2022 18:13:25 +0200 Subject: [PATCH 034/111] drm/vc4: plane: protect device resources after removal (Hardware) resources which are bound to the driver and device lifecycle must not be accessed after the device and driver are unbound. However, the DRM device isn't freed as long as the last user closed it, hence userspace can still call into the driver. Therefore protect the critical sections which are accessing those resources with drm_dev_enter() and drm_dev_exit(). Fixes: 9872c7a31921 ("drm/vc4: plane: Switch to drmm_universal_plane_alloc()") Signed-off-by: Danilo Krummrich Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20220824161327.330627-3-dakr@redhat.com --- drivers/gpu/drm/vc4/vc4_plane.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c index eff9c63adfa7..8b92a45a3c89 100644 --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -1219,6 +1220,10 @@ u32 vc4_plane_write_dlist(struct drm_plane *plane, u32 __iomem *dlist) { struct vc4_plane_state *vc4_state = to_vc4_plane_state(plane->state); int i; + int idx; + + if (!drm_dev_enter(plane->dev, &idx)) + goto out; vc4_state->hw_dlist = dlist; @@ -1226,6 +1231,9 @@ u32 vc4_plane_write_dlist(struct drm_plane *plane, u32 __iomem *dlist) for (i = 0; i < vc4_state->dlist_count; i++) writel(vc4_state->dlist[i], &dlist[i]); + drm_dev_exit(idx); + +out: return vc4_state->dlist_count; } @@ -1245,6 +1253,10 @@ void vc4_plane_async_set_fb(struct drm_plane *plane, struct drm_framebuffer *fb) struct vc4_plane_state *vc4_state = to_vc4_plane_state(plane->state); struct drm_gem_dma_object *bo = drm_fb_dma_get_gem_obj(fb, 0); uint32_t addr; + int idx; + + if (!drm_dev_enter(plane->dev, &idx)) + return; /* We're skipping the address adjustment for negative origin, * because this is only called on the primary plane. @@ -1263,6 +1275,8 @@ void vc4_plane_async_set_fb(struct drm_plane *plane, struct drm_framebuffer *fb) * also use our updated address. */ vc4_state->dlist[vc4_state->ptr0_offset] = addr; + + drm_dev_exit(idx); } static void vc4_plane_atomic_async_update(struct drm_plane *plane, @@ -1271,6 +1285,10 @@ static void vc4_plane_atomic_async_update(struct drm_plane *plane, struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane); struct vc4_plane_state *vc4_state, *new_vc4_state; + int idx; + + if (!drm_dev_enter(plane->dev, &idx)) + return; swap(plane->state->fb, new_plane_state->fb); plane->state->crtc_x = new_plane_state->crtc_x; @@ -1333,6 +1351,8 @@ static void vc4_plane_atomic_async_update(struct drm_plane *plane, &vc4_state->hw_dlist[vc4_state->pos2_offset]); writel(vc4_state->dlist[vc4_state->ptr0_offset], &vc4_state->hw_dlist[vc4_state->ptr0_offset]); + + drm_dev_exit(idx); } static int vc4_plane_atomic_async_check(struct drm_plane *plane, From e0c953034a35b85b60ccc792a7d6e5fd802d944b Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Wed, 24 Aug 2022 18:13:26 +0200 Subject: [PATCH 035/111] drm/vc4: crtc: protect device resources after removal (Hardware) resources which are bound to the driver and device lifecycle must not be accessed after the device and driver are unbound. However, the DRM device isn't freed as long as the last user closed it, hence userspace can still call into the driver. Therefore protect the critical sections which are accessing those resources with drm_dev_enter() and drm_dev_exit(). Fixes: 7cc4214c27cf ("drm/vc4: crtc: Switch to drmm_kzalloc") Signed-off-by: Danilo Krummrich Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20220824161327.330627-4-dakr@redhat.com --- drivers/gpu/drm/vc4/vc4_crtc.c | 41 +++++++++++++++++++++++++++++++++- 1 file changed, 40 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 2def6e2ad6f0..0108613e79d5 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -39,6 +39,7 @@ #include #include #include +#include #include #include #include @@ -295,10 +296,17 @@ struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc, static void vc4_crtc_pixelvalve_reset(struct drm_crtc *crtc) { struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + struct drm_device *dev = crtc->dev; + int idx; + + if (!drm_dev_enter(dev, &idx)) + return; /* The PV needs to be disabled before it can be flushed */ CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) & ~PV_CONTROL_EN); CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) | PV_CONTROL_FIFO_CLR); + + drm_dev_exit(idx); } static void vc4_crtc_config_pv(struct drm_crtc *crtc, struct drm_encoder *encoder, @@ -321,6 +329,10 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc, struct drm_encoder *encode u32 format = is_dsi1 ? PV_CONTROL_FORMAT_DSIV_24 : PV_CONTROL_FORMAT_24; u8 ppc = pv_data->pixels_per_clock; bool debug_dump_regs = false; + int idx; + + if (!drm_dev_enter(dev, &idx)) + return; if (debug_dump_regs) { struct drm_printer p = drm_info_printer(&vc4_crtc->pdev->dev); @@ -410,6 +422,8 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc, struct drm_encoder *encode drm_crtc_index(crtc)); drm_print_regset32(&p, &vc4_crtc->regset); } + + drm_dev_exit(idx); } static void require_hvs_enabled(struct drm_device *dev) @@ -430,7 +444,10 @@ static int vc4_crtc_disable(struct drm_crtc *crtc, struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); struct drm_device *dev = crtc->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); - int ret; + int idx, ret; + + if (!drm_dev_enter(dev, &idx)) + return -ENODEV; CRTC_WRITE(PV_V_CONTROL, CRTC_READ(PV_V_CONTROL) & ~PV_VCONTROL_VIDEN); @@ -464,6 +481,8 @@ static int vc4_crtc_disable(struct drm_crtc *crtc, if (vc4_encoder && vc4_encoder->post_crtc_powerdown) vc4_encoder->post_crtc_powerdown(encoder, state); + drm_dev_exit(idx); + return 0; } @@ -588,10 +607,14 @@ static void vc4_crtc_atomic_enable(struct drm_crtc *crtc, struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc, new_state); struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder); + int idx; drm_dbg(dev, "Enabling CRTC %s (%u) connected to Encoder %s (%u)", crtc->name, crtc->base.id, encoder->name, encoder->base.id); + if (!drm_dev_enter(dev, &idx)) + return; + require_hvs_enabled(dev); /* Enable vblank irq handling before crtc is started otherwise @@ -619,6 +642,8 @@ static void vc4_crtc_atomic_enable(struct drm_crtc *crtc, if (vc4_encoder->post_crtc_enable) vc4_encoder->post_crtc_enable(encoder, state); + + drm_dev_exit(idx); } static enum drm_mode_status vc4_crtc_mode_valid(struct drm_crtc *crtc, @@ -711,17 +736,31 @@ static int vc4_crtc_atomic_check(struct drm_crtc *crtc, static int vc4_enable_vblank(struct drm_crtc *crtc) { struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + struct drm_device *dev = crtc->dev; + int idx; + + if (!drm_dev_enter(dev, &idx)) + return -ENODEV; CRTC_WRITE(PV_INTEN, PV_INT_VFP_START); + drm_dev_exit(idx); + return 0; } static void vc4_disable_vblank(struct drm_crtc *crtc) { struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + struct drm_device *dev = crtc->dev; + int idx; + + if (!drm_dev_enter(dev, &idx)) + return; CRTC_WRITE(PV_INTEN, 0); + + drm_dev_exit(idx); } static void vc4_crtc_handle_page_flip(struct vc4_crtc *vc4_crtc) From b3be4520d81e7dc820de5fdab0d7d697231cf517 Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Wed, 24 Aug 2022 18:13:27 +0200 Subject: [PATCH 036/111] drm/vc4: hvs: protect drm_print_regset32() In vc4_hvs_dump_state() potentially freed resources are protected from being accessed with drm_dev_enter()/drm_dev_exit(). Also include drm_print_regset32() in the protected section, since drm_print_regset32() does access memory that is typically mapped via devm_* calls. Fixes: 969cfae1f01d ("drm/vc4: hvs: Protect device resources after removal") Signed-off-by: Danilo Krummrich Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20220824161327.330627-5-dakr@redhat.com --- drivers/gpu/drm/vc4/vc4_hvs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c index 9e823e0de197..4ac9f5a2d5f9 100644 --- a/drivers/gpu/drm/vc4/vc4_hvs.c +++ b/drivers/gpu/drm/vc4/vc4_hvs.c @@ -71,11 +71,11 @@ void vc4_hvs_dump_state(struct vc4_hvs *hvs) struct drm_printer p = drm_info_printer(&hvs->pdev->dev); int idx, i; - drm_print_regset32(&p, &hvs->regset); - if (!drm_dev_enter(drm, &idx)) return; + drm_print_regset32(&p, &hvs->regset); + DRM_INFO("HVS ctx:\n"); for (i = 0; i < 64; i += 4) { DRM_INFO("0x%08x (%s): 0x%08x 0x%08x 0x%08x 0x%08x\n", From d9c04a1b7a15b5e74b2977461d9511e497f05d8f Mon Sep 17 00:00:00 2001 From: Vivek Kasireddy Date: Wed, 24 Aug 2022 23:35:22 -0700 Subject: [PATCH 037/111] udmabuf: Set ubuf->sg = NULL if the creation of sg table fails When userspace tries to map the dmabuf and if for some reason (e.g. OOM) the creation of the sg table fails, ubuf->sg needs to be set to NULL. Otherwise, when the userspace subsequently closes the dmabuf fd, we'd try to erroneously free the invalid sg table from release_udmabuf resulting in the following crash reported by syzbot: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 3609 Comm: syz-executor487 Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:dma_unmap_sgtable include/linux/dma-mapping.h:378 [inline] RIP: 0010:put_sg_table drivers/dma-buf/udmabuf.c:89 [inline] RIP: 0010:release_udmabuf+0xcb/0x4f0 drivers/dma-buf/udmabuf.c:114 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 2b 04 00 00 48 8d 7d 0c 4c 8b 63 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 e2 RSP: 0018:ffffc900037efd30 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffffff8cb67800 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff84ad27e0 RDI: 0000000000000000 RBP: fffffffffffffff4 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000008c07c R12: ffff88801fa05000 R13: ffff888073db07e8 R14: ffff888025c25440 R15: 0000000000000000 FS: 0000555555fc4300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc1c0ce06e4 CR3: 00000000715e6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dma_buf_release+0x157/0x2d0 drivers/dma-buf/dma-buf.c:78 __dentry_kill+0x42b/0x640 fs/dcache.c:612 dentry_kill fs/dcache.c:733 [inline] dput+0x806/0xdb0 fs/dcache.c:913 __fput+0x39c/0x9d0 fs/file_table.c:333 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 ptrace_notify+0x114/0x140 kernel/signal.c:2353 ptrace_report_syscall include/linux/ptrace.h:420 [inline] ptrace_report_syscall_exit include/linux/ptrace.h:482 [inline] syscall_exit_work kernel/entry/common.c:249 [inline] syscall_exit_to_user_mode_prepare+0x129/0x280 kernel/entry/common.c:276 __syscall_exit_to_user_mode_work kernel/entry/common.c:281 [inline] syscall_exit_to_user_mode+0x9/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc1c0c35b6b Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007ffd78a06090 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007fc1c0c35b6b RDX: 0000000020000280 RSI: 0000000040086200 RDI: 0000000000000006 RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000000c R13: 0000000000000003 R14: 00007fc1c0cfe4a0 R15: 00007ffd78a06140 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dma_unmap_sgtable include/linux/dma-mapping.h:378 [inline] RIP: 0010:put_sg_table drivers/dma-buf/udmabuf.c:89 [inline] RIP: 0010:release_udmabuf+0xcb/0x4f0 drivers/dma-buf/udmabuf.c:114 Reported-by: syzbot+c80e9ef5d8bb45894db0@syzkaller.appspotmail.com Cc: Gerd Hoffmann Signed-off-by: Vivek Kasireddy Link: http://patchwork.freedesktop.org/patch/msgid/20220825063522.801264-1-vivek.kasireddy@intel.com Signed-off-by: Gerd Hoffmann --- drivers/dma-buf/udmabuf.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index 38e8767ec371..bf11d32205f3 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -124,17 +124,20 @@ static int begin_cpu_udmabuf(struct dma_buf *buf, { struct udmabuf *ubuf = buf->priv; struct device *dev = ubuf->device->this_device; + int ret = 0; if (!ubuf->sg) { ubuf->sg = get_sg_table(dev, buf, direction); - if (IS_ERR(ubuf->sg)) - return PTR_ERR(ubuf->sg); + if (IS_ERR(ubuf->sg)) { + ret = PTR_ERR(ubuf->sg); + ubuf->sg = NULL; + } } else { dma_sync_sg_for_cpu(dev, ubuf->sg->sgl, ubuf->sg->nents, direction); } - return 0; + return ret; } static int end_cpu_udmabuf(struct dma_buf *buf, From 3007dc2af6e86ac00b4daf7414142637fdf50bfa Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Fri, 12 Aug 2022 15:40:00 -0700 Subject: [PATCH 038/111] drm/virtio: Fix same-context optimization When VIRTGPU_EXECBUF_RING_IDX is used, we should be considering the timeline that the EB if running on rather than the global driver fence context. Fixes: 85c83ea915ed ("drm/virtio: implement context init: allocate an array of fence contexts") Signed-off-by: Rob Clark Link: http://patchwork.freedesktop.org/patch/msgid/20220812224001.2806463-1-robdclark@gmail.com Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/virtio/virtgpu_ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c index 9b2702116f93..3b1701607aae 100644 --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c @@ -168,7 +168,7 @@ static int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data, * array contains any fence from a foreign context. */ ret = 0; - if (!dma_fence_match_context(in_fence, vgdev->fence_drv.context)) + if (!dma_fence_match_context(in_fence, fence_ctx + ring_idx)) ret = dma_fence_wait(in_fence, true); dma_fence_put(in_fence); From 84dfc46594b0167e5d3736273b0e0e05365da641 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 22 Aug 2022 17:42:27 -0700 Subject: [PATCH 039/111] drm/panel: use 'select' for Ili9341 panel driver helpers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use 'select' instead of 'depends on' for DRM helpers for the Ilitek ILI9341 panel driver. This is what is done in the vast majority of other cases and this makes it possible to fix a build error with drm_mipi_dbi. Fixes: 5a04227326b0 ("drm/panel: Add ilitek ili9341 panel driver") Signed-off-by: Randy Dunlap Cc: Dillon Min Cc: Linus Walleij Cc: Sam Ravnborg Cc: Noralf Trønnes Cc: Thomas Zimmermann Cc: Thierry Reding Cc: dri-devel@lists.freedesktop.org Cc: David Airlie Cc: Daniel Vetter Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20220823004227.10820-1-rdunlap@infradead.org --- drivers/gpu/drm/panel/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 584a69f99af6..a582ddd583c2 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -165,8 +165,8 @@ config DRM_PANEL_ILITEK_IL9322 config DRM_PANEL_ILITEK_ILI9341 tristate "Ilitek ILI9341 240x320 QVGA panels" depends on OF && SPI - depends on DRM_KMS_HELPER - depends on DRM_GEM_DMA_HELPER + select DRM_KMS_HELPER + select DRM_GEM_DMA_HELPER depends on BACKLIGHT_CLASS_DEVICE select DRM_MIPI_DBI help From eb7de496451bd969e203f02f66585131228ba4ae Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 22 Aug 2022 17:42:43 -0700 Subject: [PATCH 040/111] drm: fix drm_mipi_dbi build errors MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit drm_mipi_dbi needs lots of DRM_KMS_HELPER support, so select that Kconfig symbol like it is done is most other uses, and the way that it was before MIPS_DBI was moved from tinydrm to its core location. Fixes these build errors: ld: drivers/gpu/drm/drm_mipi_dbi.o: in function `mipi_dbi_buf_copy': drivers/gpu/drm/drm_mipi_dbi.c:205: undefined reference to `drm_gem_fb_get_obj' ld: drivers/gpu/drm/drm_mipi_dbi.c:211: undefined reference to `drm_gem_fb_begin_cpu_access' ld: drivers/gpu/drm/drm_mipi_dbi.c:215: undefined reference to `drm_gem_fb_vmap' ld: drivers/gpu/drm/drm_mipi_dbi.c:222: undefined reference to `drm_fb_swab' ld: drivers/gpu/drm/drm_mipi_dbi.c:224: undefined reference to `drm_fb_memcpy' ld: drivers/gpu/drm/drm_mipi_dbi.c:227: undefined reference to `drm_fb_xrgb8888_to_rgb565' ld: drivers/gpu/drm/drm_mipi_dbi.c:235: undefined reference to `drm_gem_fb_vunmap' ld: drivers/gpu/drm/drm_mipi_dbi.c:237: undefined reference to `drm_gem_fb_end_cpu_access' ld: drivers/gpu/drm/drm_mipi_dbi.o: in function `mipi_dbi_dev_init_with_formats': ld: drivers/gpu/drm/drm_mipi_dbi.o:/X64/../drivers/gpu/drm/drm_mipi_dbi.c:469: undefined reference to `drm_gem_fb_create_with_dirty' Fixes: 174102f4de23 ("drm/tinydrm: Move mipi-dbi") Signed-off-by: Randy Dunlap Reported-by: kernel test robot Cc: Dillon Min Cc: Linus Walleij Cc: Sam Ravnborg Cc: Noralf Trønnes Cc: Thomas Zimmermann Cc: Thierry Reding Cc: dri-devel@lists.freedesktop.org Cc: David Airlie Cc: Daniel Vetter Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20220823004243.11596-1-rdunlap@infradead.org --- drivers/gpu/drm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 0b2ad7212ee6..2f52e8941074 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -31,6 +31,7 @@ menuconfig DRM config DRM_MIPI_DBI tristate depends on DRM + select DRM_KMS_HELPER config DRM_MIPI_DSI bool From 4d054ca9ad01004901f3ba988d77f7d298819c12 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 1 Aug 2022 15:15:55 +0200 Subject: [PATCH 041/111] drm: bridge: icn6211: Add and use hs_rate and lp_rate Fill in hs_rate and lp_rate to struct mipi_dsi_device for this bridge and adjust DSI input frequency calculations such that they expect the DSI host to configure HS clock according to hs_rate. This is an optimization for the DSI burst mode case. In case the DSI device supports DSI burst mode, it is recommended to operate the DSI interface at the highest possible HS clock frequency which the DSI device supports. This permits the DSI host to send as short as possible bursts of data on the DSI link and keep the DSI data lanes in LP mode otherwise, which reduces power consumption. Signed-off-by: Marek Vasut Cc: Jagan Teki Cc: Laurent Pinchart Cc: Linus Walleij Cc: Robert Foss Cc: Sam Ravnborg Cc: dri-devel@lists.freedesktop.org Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20220801131555.182969-1-marex@denx.de --- drivers/gpu/drm/bridge/chipone-icn6211.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bridge/chipone-icn6211.c b/drivers/gpu/drm/bridge/chipone-icn6211.c index b07d2d16c3cf..5db0224d783f 100644 --- a/drivers/gpu/drm/bridge/chipone-icn6211.c +++ b/drivers/gpu/drm/bridge/chipone-icn6211.c @@ -259,7 +259,7 @@ static void chipone_configure_pll(struct chipone *icn, /* * DSI byte clock frequency (input into PLL) is calculated as: - * DSI_CLK = mode clock * bpp / dsi_data_lanes / 8 + * DSI_CLK = HS clock / 4 * * DPI pixel clock frequency (output from PLL) is mode clock. * @@ -273,8 +273,7 @@ static void chipone_configure_pll(struct chipone *icn, * It seems the PLL input clock after applying P pre-divider have * to be lower than 20 MHz. */ - fin = mode_clock * mipi_dsi_pixel_format_to_bpp(icn->dsi->format) / - icn->dsi->lanes / 8; /* in Hz */ + fin = icn->dsi->hs_rate / 4; /* in Hz */ /* Minimum value of P predivider for PLL input in 5..20 MHz */ p_min = clamp(DIV_ROUND_UP(fin, 20000000), 1U, 31U); @@ -515,6 +514,8 @@ static int chipone_dsi_attach(struct chipone *icn) dsi->format = MIPI_DSI_FMT_RGB888; dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET; + dsi->hs_rate = 500000000; + dsi->lp_rate = 16000000; ret = mipi_dsi_attach(dsi); if (ret < 0) From a2d6447a4a8ab314a6f82ab99f218689f9b0c306 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 1 Aug 2022 15:17:46 +0200 Subject: [PATCH 042/111] dt-bindings: display: bridge: icn6211: Add support for external REFCLK The ICN6211 is capable of deriving its internal PLL clock from either MIPI DSI HS clock, external REFCLK clock, or even internal oscillator. Currently supported is only the first option. Document support for external REFCLK clock input in addition to that. Signed-off-by: Marek Vasut Cc: Jagan Teki Cc: Laurent Pinchart Cc: Linus Walleij Cc: Rob Herring Cc: Robert Foss Cc: Sam Ravnborg Cc: dri-devel@lists.freedesktop.org Cc: devicetree@vger.kernel.org Reviewed-by: Rob Herring Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20220801131747.183041-1-marex@denx.de --- .../bindings/display/bridge/chipone,icn6211.yaml | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/devicetree/bindings/display/bridge/chipone,icn6211.yaml b/Documentation/devicetree/bindings/display/bridge/chipone,icn6211.yaml index 4f0b7c71313c..5fb54375aeb6 100644 --- a/Documentation/devicetree/bindings/display/bridge/chipone,icn6211.yaml +++ b/Documentation/devicetree/bindings/display/bridge/chipone,icn6211.yaml @@ -24,6 +24,15 @@ properties: maxItems: 1 description: virtual channel number of a DSI peripheral + clock-names: + const: refclk + + clocks: + maxItems: 1 + description: | + Optional external clock connected to REF_CLK input. + The clock rate must be in 10..154 MHz range. + enable-gpios: description: Bridge EN pin, chip is reset when EN is low. From 378e0f9f0b3e03a84db5ed5d3da3850871e9209e Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 1 Aug 2022 15:17:47 +0200 Subject: [PATCH 043/111] drm: bridge: icn6211: Add support for external REFCLK The ICN6211 is capable of deriving its internal PLL clock from either MIPI DSI HS clock, external REFCLK clock, or even internal oscillator. Currently supported is only the first option. Add support for external REFCLK clock input in addition to that. There is little difference between these options, except that in case of MIPI DSI HS clock input, the HS clock are pre-divided by a fixed /4 divider before being fed to the PLL input, while in case of external REFCLK, the RECLK clock are fed directly into the PLL input. Per exceptionally poor documentation, the REFCLK must be in range of 10..154 MHz. Signed-off-by: Marek Vasut Cc: Jagan Teki Cc: Laurent Pinchart Cc: Linus Walleij Cc: Robert Foss Cc: Sam Ravnborg Cc: dri-devel@lists.freedesktop.org Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20220801131747.183041-2-marex@denx.de --- drivers/gpu/drm/bridge/chipone-icn6211.c | 39 +++++++++++++++++++++--- 1 file changed, 34 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/bridge/chipone-icn6211.c b/drivers/gpu/drm/bridge/chipone-icn6211.c index 5db0224d783f..bf920c3503aa 100644 --- a/drivers/gpu/drm/bridge/chipone-icn6211.c +++ b/drivers/gpu/drm/bridge/chipone-icn6211.c @@ -11,6 +11,7 @@ #include #include +#include #include #include #include @@ -151,6 +152,8 @@ struct chipone { struct regulator *vdd1; struct regulator *vdd2; struct regulator *vdd3; + struct clk *refclk; + unsigned long refclk_rate; bool interface_i2c; }; @@ -273,7 +276,10 @@ static void chipone_configure_pll(struct chipone *icn, * It seems the PLL input clock after applying P pre-divider have * to be lower than 20 MHz. */ - fin = icn->dsi->hs_rate / 4; /* in Hz */ + if (icn->refclk) + fin = icn->refclk_rate; + else + fin = icn->dsi->hs_rate / 4; /* in Hz */ /* Minimum value of P predivider for PLL input in 5..20 MHz */ p_min = clamp(DIV_ROUND_UP(fin, 20000000), 1U, 31U); @@ -318,16 +324,18 @@ static void chipone_configure_pll(struct chipone *icn, best_p_pot = !(best_p & 1); dev_dbg(icn->dev, - "PLL: P[3:0]=%d P[4]=2*%d M=%d S[7:5]=2^%d delta=%d => DSI f_in=%d Hz ; DPI f_out=%d Hz\n", + "PLL: P[3:0]=%d P[4]=2*%d M=%d S[7:5]=2^%d delta=%d => DSI f_in(%s)=%d Hz ; DPI f_out=%d Hz\n", best_p >> best_p_pot, best_p_pot, best_m, best_s + 1, - min_delta, fin, (fin * best_m) / (best_p << (best_s + 1))); + min_delta, icn->refclk ? "EXT" : "DSI", fin, + (fin * best_m) / (best_p << (best_s + 1))); ref_div = PLL_REF_DIV_P(best_p >> best_p_pot) | PLL_REF_DIV_S(best_s); if (best_p_pot) /* Prefer /2 pre-divider */ ref_div |= PLL_REF_DIV_Pe; - /* Clock source selection fixed to MIPI DSI clock lane */ - chipone_writeb(icn, PLL_CTRL(6), PLL_CTRL_6_MIPI_CLK); + /* Clock source selection either external clock or MIPI DSI clock lane */ + chipone_writeb(icn, PLL_CTRL(6), + icn->refclk ? PLL_CTRL_6_EXTERNAL : PLL_CTRL_6_MIPI_CLK); chipone_writeb(icn, PLL_REF_DIV, ref_div); chipone_writeb(icn, PLL_INT(0), best_m); } @@ -463,6 +471,11 @@ static void chipone_atomic_pre_enable(struct drm_bridge *bridge, "failed to enable VDD3 regulator: %d\n", ret); } + ret = clk_prepare_enable(icn->refclk); + if (ret) + DRM_DEV_ERROR(icn->dev, + "failed to enable RECLK clock: %d\n", ret); + gpiod_set_value(icn->enable_gpio, 1); usleep_range(10000, 11000); @@ -473,6 +486,8 @@ static void chipone_atomic_post_disable(struct drm_bridge *bridge, { struct chipone *icn = bridge_to_chipone(bridge); + clk_disable_unprepare(icn->refclk); + if (icn->vdd1) regulator_disable(icn->vdd1); @@ -618,6 +633,20 @@ static int chipone_parse_dt(struct chipone *icn) struct device *dev = icn->dev; int ret; + icn->refclk = devm_clk_get_optional(dev, "refclk"); + if (IS_ERR(icn->refclk)) { + ret = PTR_ERR(icn->refclk); + DRM_DEV_ERROR(dev, "failed to get REFCLK clock: %d\n", ret); + return ret; + } else if (icn->refclk) { + icn->refclk_rate = clk_get_rate(icn->refclk); + if (icn->refclk_rate < 10000000 || icn->refclk_rate > 154000000) { + DRM_DEV_ERROR(dev, "REFCLK out of range: %ld Hz\n", + icn->refclk_rate); + return -EINVAL; + } + } + icn->vdd1 = devm_regulator_get_optional(dev, "vdd1"); if (IS_ERR(icn->vdd1)) { ret = PTR_ERR(icn->vdd1); From 61a9fa154d217c13eea90aa5bc635bc4b1fcb66e Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 5 May 2022 23:50:19 +0200 Subject: [PATCH 044/111] drm/tve200: Fix smatch warning The "ret" variable is ambiguously returning something that could be zero in the tve200_modeset_init() function, assign it an explicit error return code to make this unambiguous. Reported-by: Dan Carpenter Signed-off-by: Linus Walleij Reviewed-by: Dan Carpenter Link: https://patchwork.freedesktop.org/patch/msgid/20220505215019.2332613-1-linus.walleij@linaro.org --- drivers/gpu/drm/tve200/tve200_drv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/tve200/tve200_drv.c b/drivers/gpu/drm/tve200/tve200_drv.c index 79d790ae1670..04db72e3fa9c 100644 --- a/drivers/gpu/drm/tve200/tve200_drv.c +++ b/drivers/gpu/drm/tve200/tve200_drv.c @@ -64,7 +64,7 @@ static int tve200_modeset_init(struct drm_device *dev) struct tve200_drm_dev_private *priv = dev->dev_private; struct drm_panel *panel; struct drm_bridge *bridge; - int ret = 0; + int ret; drm_mode_config_init(dev); mode_config = &dev->mode_config; @@ -92,6 +92,7 @@ static int tve200_modeset_init(struct drm_device *dev) * method to get the connector out of the bridge. */ dev_err(dev->dev, "the bridge is not a panel\n"); + ret = -EINVAL; goto out_bridge; } From a7c7d23649f1fc3a73507d2aab3a5010a7b6745d Mon Sep 17 00:00:00 2001 From: Patrik Jakobsson Date: Fri, 10 Jun 2022 15:09:25 +0200 Subject: [PATCH 045/111] drm/gma500: Fix SDVO command debug printing At some point the DRM printers started adding a newline after each print. This caused SDVO command debug printing to look weird. Fix this by using snprintf to print into a buffer which can be printed as a whole by DRM_DEBUG_KMS(). Code is heavily inspired by i915. Signed-off-by: Patrik Jakobsson Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220610130925.8650-1-patrik.r.jakobsson@gmail.com --- drivers/gpu/drm/gma500/psb_intel_sdvo.c | 62 ++++++++++++++++--------- 1 file changed, 41 insertions(+), 21 deletions(-) diff --git a/drivers/gpu/drm/gma500/psb_intel_sdvo.c b/drivers/gpu/drm/gma500/psb_intel_sdvo.c index a85aace25548..bdced46dd333 100644 --- a/drivers/gpu/drm/gma500/psb_intel_sdvo.c +++ b/drivers/gpu/drm/gma500/psb_intel_sdvo.c @@ -400,26 +400,38 @@ static const struct _sdvo_cmd_name { #define IS_SDVOB(reg) (reg == SDVOB) #define SDVO_NAME(svdo) (IS_SDVOB((svdo)->sdvo_reg) ? "SDVOB" : "SDVOC") -static void psb_intel_sdvo_debug_write(struct psb_intel_sdvo *psb_intel_sdvo, u8 cmd, - const void *args, int args_len) +static void psb_intel_sdvo_debug_write(struct psb_intel_sdvo *psb_intel_sdvo, + u8 cmd, const void *args, int args_len) { - int i; + struct drm_device *dev = psb_intel_sdvo->base.base.dev; + int i, pos = 0; + char buffer[73]; + +#define BUF_PRINT(args...) \ + pos += snprintf(buffer + pos, max_t(int, sizeof(buffer) - pos, 0), args) + + for (i = 0; i < args_len; i++) { + BUF_PRINT("%02X ", ((u8 *)args)[i]); + } + + for (; i < 8; i++) { + BUF_PRINT(" "); + } - DRM_DEBUG_KMS("%s: W: %02X ", - SDVO_NAME(psb_intel_sdvo), cmd); - for (i = 0; i < args_len; i++) - DRM_DEBUG_KMS("%02X ", ((u8 *)args)[i]); - for (; i < 8; i++) - DRM_DEBUG_KMS(" "); for (i = 0; i < ARRAY_SIZE(sdvo_cmd_names); i++) { if (cmd == sdvo_cmd_names[i].cmd) { - DRM_DEBUG_KMS("(%s)", sdvo_cmd_names[i].name); + BUF_PRINT("(%s)", sdvo_cmd_names[i].name); break; } } + if (i == ARRAY_SIZE(sdvo_cmd_names)) - DRM_DEBUG_KMS("(%02X)", cmd); - DRM_DEBUG_KMS("\n"); + BUF_PRINT("(%02X)", cmd); + + drm_WARN_ON(dev, pos >= sizeof(buffer) - 1); +#undef BUF_PRINT + + DRM_DEBUG_KMS("%s: W: %02X %s\n", SDVO_NAME(psb_intel_sdvo), cmd, buffer); } static const char *cmd_status_names[] = { @@ -490,13 +502,13 @@ static bool psb_intel_sdvo_write_cmd(struct psb_intel_sdvo *psb_intel_sdvo, u8 c } static bool psb_intel_sdvo_read_response(struct psb_intel_sdvo *psb_intel_sdvo, - void *response, int response_len) + void *response, int response_len) { + struct drm_device *dev = psb_intel_sdvo->base.base.dev; + char buffer[73]; + int i, pos = 0; u8 retry = 5; u8 status; - int i; - - DRM_DEBUG_KMS("%s: R: ", SDVO_NAME(psb_intel_sdvo)); /* * The documentation states that all commands will be @@ -520,10 +532,13 @@ static bool psb_intel_sdvo_read_response(struct psb_intel_sdvo *psb_intel_sdvo, goto log_fail; } +#define BUF_PRINT(args...) \ + pos += snprintf(buffer + pos, max_t(int, sizeof(buffer) - pos, 0), args) + if (status <= SDVO_CMD_STATUS_SCALING_NOT_SUPP) - DRM_DEBUG_KMS("(%s)", cmd_status_names[status]); + BUF_PRINT("(%s)", cmd_status_names[status]); else - DRM_DEBUG_KMS("(??? %d)", status); + BUF_PRINT("(??? %d)", status); if (status != SDVO_CMD_STATUS_SUCCESS) goto log_fail; @@ -534,13 +549,18 @@ static bool psb_intel_sdvo_read_response(struct psb_intel_sdvo *psb_intel_sdvo, SDVO_I2C_RETURN_0 + i, &((u8 *)response)[i])) goto log_fail; - DRM_DEBUG_KMS(" %02X", ((u8 *)response)[i]); + BUF_PRINT(" %02X", ((u8 *)response)[i]); } - DRM_DEBUG_KMS("\n"); + + drm_WARN_ON(dev, pos >= sizeof(buffer) - 1); +#undef BUF_PRINT + + DRM_DEBUG_KMS("%s: R: %s\n", SDVO_NAME(psb_intel_sdvo), buffer); return true; log_fail: - DRM_DEBUG_KMS("... failed\n"); + DRM_DEBUG_KMS("%s: R: ... failed %s\n", + SDVO_NAME(psb_intel_sdvo), buffer); return false; } From 291f269a49916a8494526edca92afed69270241f Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Thu, 4 Aug 2022 19:47:51 +0800 Subject: [PATCH 046/111] drm/gma500: Fix comment typo The double `the' is duplicated in the comment, remove one. Signed-off-by: Jason Wang Signed-off-by: Patrik Jakobsson Link: https://patchwork.freedesktop.org/patch/msgid/20220804114751.46714-1-wangborong@cdjrlc.com --- drivers/gpu/drm/gma500/cdv_intel_dp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/gma500/cdv_intel_dp.c b/drivers/gpu/drm/gma500/cdv_intel_dp.c index bb2e9d64018a..53b967282d6a 100644 --- a/drivers/gpu/drm/gma500/cdv_intel_dp.c +++ b/drivers/gpu/drm/gma500/cdv_intel_dp.c @@ -115,7 +115,7 @@ i2c_algo_dp_aux_stop(struct i2c_adapter *adapter, bool reading) /* * Write a single byte to the current I2C address, the - * the I2C link must be running or this returns -EIO + * I2C link must be running or this returns -EIO */ static int i2c_algo_dp_aux_put_byte(struct i2c_adapter *adapter, u8 byte) From f8e1fa0fc8bd13122324da7d1e80d66641220680 Mon Sep 17 00:00:00 2001 From: Xin Ji Date: Tue, 26 Jul 2022 11:30:58 +0800 Subject: [PATCH 047/111] drm/bridge: anx7625: Support HDMI_I2S audio format 1. Support HDMI_I2S audio format. 2. Return 0 if there is no sink connection in .hw_param callback. Signed-off-by: Xin Ji Acked-by: Hsin-Yi Wang Acked-by: Jiaxin Yu Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220726033058.403715-1-xji@analogixsemi.com --- drivers/gpu/drm/bridge/analogix/anx7625.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c index 79fc7a50b497..c74b5df4cade 100644 --- a/drivers/gpu/drm/bridge/analogix/anx7625.c +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -1797,8 +1797,13 @@ static int anx7625_audio_hw_params(struct device *dev, void *data, int wl, ch, rate; int ret = 0; - if (fmt->fmt != HDMI_DSP_A) { - DRM_DEV_ERROR(dev, "only supports DSP_A\n"); + if (anx7625_sink_detect(ctx) == connector_status_disconnected) { + DRM_DEV_DEBUG_DRIVER(dev, "DP not connected\n"); + return 0; + } + + if (fmt->fmt != HDMI_DSP_A && fmt->fmt != HDMI_I2S) { + DRM_DEV_ERROR(dev, "only supports DSP_A & I2S\n"); return -EINVAL; } @@ -1806,10 +1811,16 @@ static int anx7625_audio_hw_params(struct device *dev, void *data, params->sample_rate, params->sample_width, params->cea.channels); - ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, - AUDIO_CHANNEL_STATUS_6, - ~I2S_SLAVE_MODE, - TDM_SLAVE_MODE); + if (fmt->fmt == HDMI_DSP_A) + ret = anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, + AUDIO_CHANNEL_STATUS_6, + ~I2S_SLAVE_MODE, + TDM_SLAVE_MODE); + else + ret = anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, + AUDIO_CHANNEL_STATUS_6, + ~TDM_SLAVE_MODE, + I2S_SLAVE_MODE); /* Word length */ switch (params->sample_width) { From d688f6b5525d5bc1b88c198959274d53a1a24204 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 25 Jul 2022 00:43:17 +0200 Subject: [PATCH 048/111] drm/bridge: tc358767: Handle bridge past DPI output Currently the driver only handles panel directly connected to the DPI output. Handle the case where a bridge is connected past DPI output of this bridge. This could be e.g. DPI to LVDS encoder chip. Signed-off-by: Marek Vasut Cc: Jonas Karlman Cc: Laurent Pinchart Cc: Lucas Stach Cc: Maxime Ripard Cc: Neil Armstrong Cc: Robert Foss Cc: Sam Ravnborg Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220724224317.288727-1-marex@denx.de --- drivers/gpu/drm/bridge/tc358767.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index baaed4d37911..89e060b273ef 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1913,22 +1913,23 @@ static int tc_mipi_dsi_host_attach(struct tc_data *tc) static int tc_probe_dpi_bridge_endpoint(struct tc_data *tc) { struct device *dev = tc->dev; + struct drm_bridge *bridge; struct drm_panel *panel; int ret; /* port@1 is the DPI input/output port */ - ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL); + ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, &bridge); if (ret && ret != -ENODEV) return ret; if (panel) { - struct drm_bridge *panel_bridge; + bridge = devm_drm_panel_bridge_add(dev, panel); + if (IS_ERR(bridge)) + return PTR_ERR(bridge); + } - panel_bridge = devm_drm_panel_bridge_add(dev, panel); - if (IS_ERR(panel_bridge)) - return PTR_ERR(panel_bridge); - - tc->panel_bridge = panel_bridge; + if (bridge) { + tc->panel_bridge = bridge; tc->bridge.type = DRM_MODE_CONNECTOR_DPI; tc->bridge.funcs = &tc_dpi_bridge_funcs; From 81dae1f34d56b5a25659d03ffe63be69aca87352 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 1 Aug 2022 14:54:19 +0200 Subject: [PATCH 049/111] drm/bridge: lvds-codec: Fix error checking of drm_of_lvds_get_data_mapping() The drm_of_lvds_get_data_mapping() returns either negative value on error or MEDIA_BUS_FMT_* otherwise. The check for 'ret' would also catch the positive case of MEDIA_BUS_FMT_* and lead to probe failure every time 'data-mapping' DT property is specified. Fixes: 7c4dd0a266527 ("drm: of: Add drm_of_lvds_get_data_mapping") Signed-off-by: Marek Vasut Cc: Laurent Pinchart Cc: Sam Ravnborg To: dri-devel@lists.freedesktop.org Reviewed-by: Neil Armstrong Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220801125419.167562-1-marex@denx.de --- drivers/gpu/drm/bridge/lvds-codec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/lvds-codec.c b/drivers/gpu/drm/bridge/lvds-codec.c index 702ea803a743..39e7004de720 100644 --- a/drivers/gpu/drm/bridge/lvds-codec.c +++ b/drivers/gpu/drm/bridge/lvds-codec.c @@ -180,7 +180,7 @@ static int lvds_codec_probe(struct platform_device *pdev) of_node_put(bus_node); if (ret == -ENODEV) { dev_warn(dev, "missing 'data-mapping' DT property\n"); - } else if (ret) { + } else if (ret < 0) { dev_err(dev, "invalid 'data-mapping' DT property\n"); return ret; } else { From da09daf881082266e4075657fac53c7966de8e4d Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Fri, 26 Aug 2022 20:57:33 +0200 Subject: [PATCH 050/111] drm: bridge: dw_hdmi: only trigger hotplug event on link change There are two events that signal a real change of the link state: HPD going high means the sink is newly connected or wants the source to re-read the EDID, RX sense going low is a indication that the link has been disconnected. Ignore the other two events that also trigger interrupts, but don't need immediate attention: HPD going low does not necessarily mean the link has been lost and should not trigger a immediate read of the status. RX sense going high also does not require a detect cycle, as HPD going high is the right point in time to read the EDID. Signed-off-by: Lucas Stach Reviewed-by: Neil Armstrong (v1) Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220826185733.3213248-1-l.stach@pengutronix.de --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 25a60eb4d67c..40d8ca37f5bc 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -3096,6 +3096,7 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id) { struct dw_hdmi *hdmi = dev_id; u8 intr_stat, phy_int_pol, phy_pol_mask, phy_stat; + enum drm_connector_status status = connector_status_unknown; intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0); phy_int_pol = hdmi_readb(hdmi, HDMI_PHY_POL0); @@ -3134,13 +3135,15 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id) cec_notifier_phys_addr_invalidate(hdmi->cec_notifier); mutex_unlock(&hdmi->cec_notifier_mutex); } + + if (phy_stat & HDMI_PHY_HPD) + status = connector_status_connected; + + if (!(phy_stat & (HDMI_PHY_HPD | HDMI_PHY_RX_SENSE))) + status = connector_status_disconnected; } - if (intr_stat & HDMI_IH_PHY_STAT0_HPD) { - enum drm_connector_status status = phy_int_pol & HDMI_PHY_HPD - ? connector_status_connected - : connector_status_disconnected; - + if (status != connector_status_unknown) { dev_dbg(hdmi->dev, "EVENT=%s\n", status == connector_status_connected ? "plugin" : "plugout"); From 55453c0914d9b81e75c5c83adb2dd9382da2c79d Mon Sep 17 00:00:00 2001 From: Hsin-Yi Wang Date: Mon, 15 Aug 2022 17:39:07 +0800 Subject: [PATCH 051/111] drm/bridge: ps8640: Add double reset T4 and T5 to power-on sequence The double reset power-on sequence is a workaround for the hardware flaw in some chip that SPI Clock output glitch and cause internal MPU unable to read firmware correctly. The sequence is suggested in ps8640 application note. Signed-off-by: Hsin-Yi Wang Reviewed-by: Rock Chiu Signed-off-by: Douglas Anderson Link: https://patchwork.freedesktop.org/patch/msgid/20220815093905.134164-1-hsinyi@chromium.org --- drivers/gpu/drm/bridge/parade-ps8640.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c index 49107a6cdac1..d7483c13c569 100644 --- a/drivers/gpu/drm/bridge/parade-ps8640.c +++ b/drivers/gpu/drm/bridge/parade-ps8640.c @@ -375,6 +375,11 @@ static int __maybe_unused ps8640_resume(struct device *dev) gpiod_set_value(ps_bridge->gpio_reset, 1); usleep_range(2000, 2500); gpiod_set_value(ps_bridge->gpio_reset, 0); + /* Double reset for T4 and T5 */ + msleep(50); + gpiod_set_value(ps_bridge->gpio_reset, 1); + msleep(50); + gpiod_set_value(ps_bridge->gpio_reset, 0); /* * Mystery 200 ms delay for the "MCU to be ready". It's unclear if From 5b04aab6d49578eacd6d341e281c70a769f96126 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Mon, 15 Aug 2022 11:58:34 +0300 Subject: [PATCH 052/111] drm/dp: add drm_dp_phy_name() for getting DP PHY name MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a helper for getting the DP PHY name. In the interest of caller simplicity and to avoid allocations and passing in of buffers, duplicate the const strings to return. It's a minor penalty to pay for simplicity in all the call sites. v2: Rebase, add kernel-doc, ensure non-NULL always Cc: Ville Syrjälä Reviewed-by: Ville Syrjälä Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/b08dc12a7e621a48ec35546d6cd1ed4b1434810d.1660553850.git.jani.nikula@intel.com --- drivers/gpu/drm/display/drm_dp_helper.c | 32 +++++++++++++++++++++++++ include/drm/display/drm_dp_helper.h | 2 ++ 2 files changed, 34 insertions(+) diff --git a/drivers/gpu/drm/display/drm_dp_helper.c b/drivers/gpu/drm/display/drm_dp_helper.c index 32b295003f49..92990a3d577a 100644 --- a/drivers/gpu/drm/display/drm_dp_helper.c +++ b/drivers/gpu/drm/display/drm_dp_helper.c @@ -390,6 +390,38 @@ void drm_dp_link_train_channel_eq_delay(const struct drm_dp_aux *aux, } EXPORT_SYMBOL(drm_dp_link_train_channel_eq_delay); +/** + * drm_dp_phy_name() - Get the name of the given DP PHY + * @dp_phy: The DP PHY identifier + * + * Given the @dp_phy, get a user friendly name of the DP PHY, either "DPRX" or + * "LTTPR ", or "" on errors. The returned string is always + * non-NULL and valid. + * + * Returns: Name of the DP PHY. + */ +const char *drm_dp_phy_name(enum drm_dp_phy dp_phy) +{ + static const char * const phy_names[] = { + [DP_PHY_DPRX] = "DPRX", + [DP_PHY_LTTPR1] = "LTTPR 1", + [DP_PHY_LTTPR2] = "LTTPR 2", + [DP_PHY_LTTPR3] = "LTTPR 3", + [DP_PHY_LTTPR4] = "LTTPR 4", + [DP_PHY_LTTPR5] = "LTTPR 5", + [DP_PHY_LTTPR6] = "LTTPR 6", + [DP_PHY_LTTPR7] = "LTTPR 7", + [DP_PHY_LTTPR8] = "LTTPR 8", + }; + + if (dp_phy < 0 || dp_phy >= ARRAY_SIZE(phy_names) || + WARN_ON(!phy_names[dp_phy])) + return ""; + + return phy_names[dp_phy]; +} +EXPORT_SYMBOL(drm_dp_phy_name); + void drm_dp_lttpr_link_train_clock_recovery_delay(void) { usleep_range(100, 200); diff --git a/include/drm/display/drm_dp_helper.h b/include/drm/display/drm_dp_helper.h index db0fe9f8a612..ab55453f2d2c 100644 --- a/include/drm/display/drm_dp_helper.h +++ b/include/drm/display/drm_dp_helper.h @@ -69,6 +69,8 @@ bool drm_dp_128b132b_link_training_failed(const u8 link_status[DP_LINK_STATUS_SI u8 drm_dp_link_rate_to_bw_code(int link_rate); int drm_dp_bw_code_to_link_rate(u8 link_bw); +const char *drm_dp_phy_name(enum drm_dp_phy dp_phy); + /** * struct drm_dp_vsc_sdp - drm DP VSC SDP * From 1ff673333d46d2c1b053ebd0c1c7c7c79e36943e Mon Sep 17 00:00:00 2001 From: Zheyu Ma Date: Tue, 30 Aug 2022 15:34:50 +0800 Subject: [PATCH 053/111] drm/bridge: megachips: Fix a null pointer dereference bug When removing the module we will get the following warning: [ 31.911505] i2c-core: driver [stdp2690-ge-b850v3-fw] unregistered [ 31.912484] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 31.913338] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 31.915280] RIP: 0010:drm_bridge_remove+0x97/0x130 [ 31.921825] Call Trace: [ 31.922533] stdp4028_ge_b850v3_fw_remove+0x34/0x60 [megachips_stdpxxxx_ge_b850v3_fw] [ 31.923139] i2c_device_remove+0x181/0x1f0 The two bridges (stdp2690, stdp4028) do not probe at the same time, so the driver does not call ge_b850v3_resgiter() when probing, causing the driver to try to remove the object that has not been initialized. Fix this by checking whether both the bridges are probed. Fixes: 11632d4aa2b3 ("drm/bridge: megachips: Ensure both bridges are probed before registration") Signed-off-by: Zheyu Ma Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220830073450.1897020-1-zheyuma97@gmail.com --- drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c b/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c index cce98bf2a4e7..72248a565579 100644 --- a/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c +++ b/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c @@ -296,7 +296,9 @@ static void ge_b850v3_lvds_remove(void) * This check is to avoid both the drivers * removing the bridge in their remove() function */ - if (!ge_b850v3_lvds_ptr) + if (!ge_b850v3_lvds_ptr || + !ge_b850v3_lvds_ptr->stdp2690_i2c || + !ge_b850v3_lvds_ptr->stdp4028_i2c) goto out; drm_bridge_remove(&ge_b850v3_lvds_ptr->bridge); From 7c1dceaffd99247bf443606730515b54d6285969 Mon Sep 17 00:00:00 2001 From: Pin-yen Lin Date: Tue, 30 Aug 2022 12:57:56 +0800 Subject: [PATCH 054/111] drm/bridge: it6505: Fix the order of DP_SET_POWER commands Send DP_SET_POWER_D3 command to the downstream before stopping DP, so the suspend process will not be interrupted by the HPD interrupt. Also modify the order in .atomic_enable callback to make the callbacks symmetric. Fixes: 46ca7da7f1e8 ("drm/bridge: it6505: Send DPCD SET_POWER to downstream") Signed-off-by: Pin-yen Lin Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220830045756.1655954-1-treapking@chromium.org --- drivers/gpu/drm/bridge/ite-it6505.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c index f9251ec49bf0..2bb957cffd94 100644 --- a/drivers/gpu/drm/bridge/ite-it6505.c +++ b/drivers/gpu/drm/bridge/ite-it6505.c @@ -2951,9 +2951,6 @@ static void it6505_bridge_atomic_enable(struct drm_bridge *bridge, if (ret) dev_err(dev, "Failed to setup AVI infoframe: %d", ret); - it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link, - DP_SET_POWER_D0); - it6505_update_video_parameter(it6505, mode); ret = it6505_send_video_infoframe(it6505, &frame); @@ -2963,6 +2960,9 @@ static void it6505_bridge_atomic_enable(struct drm_bridge *bridge, it6505_int_mask_enable(it6505); it6505_video_reset(it6505); + + it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link, + DP_SET_POWER_D0); } static void it6505_bridge_atomic_disable(struct drm_bridge *bridge, @@ -2974,9 +2974,9 @@ static void it6505_bridge_atomic_disable(struct drm_bridge *bridge, DRM_DEV_DEBUG_DRIVER(dev, "start"); if (it6505->powered) { - it6505_video_disable(it6505); it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link, DP_SET_POWER_D3); + it6505_video_disable(it6505); } } From e6545831a17beaa724f29e79d8a12050b45da243 Mon Sep 17 00:00:00 2001 From: Douglas Anderson Date: Mon, 22 Aug 2022 10:53:59 -0700 Subject: [PATCH 055/111] MAINTAINERS: Add myself as a reviewer for panel-edp.c panel-edp changes go through the drm-misc tree (as per the "DRM PANEL DRIVERS" entry in MAINTAINERS), but ever since splitting panel-edp out of panel-simple I've been trying to keep a close eye on it. Make that official by listing me as a reviewer. Signed-off-by: Douglas Anderson Acked-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20220822105340.1.I66a9a5577f9b0af66492ef13c47bc78ed85e5d6b@changeid --- MAINTAINERS | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 0f9366144d31..fc62434f693f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6343,6 +6343,11 @@ S: Maintained F: Documentation/devicetree/bindings/display/panel/feiyang,fy07024di26a30d.yaml F: drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c +DRM DRIVER FOR GENERIC EDP PANELS +R: Douglas Anderson +F: Documentation/devicetree/bindings/display/panel/panel-edp.yaml +F: drivers/gpu/drm/panel/panel-edp.c + DRM DRIVER FOR GENERIC USB DISPLAY M: Noralf Trønnes S: Maintained From 3740b081795a2e03a75a1b7573291e10378bd892 Mon Sep 17 00:00:00 2001 From: Robin Murphy Date: Mon, 22 Aug 2022 23:01:27 +0100 Subject: [PATCH 056/111] drm/panfrost: Update io-pgtable API Convert to io-pgtable's bulk {map,unmap}_pages() APIs, to help the old single-page interfaces eventually go away. Unmapping heap BOs still wants to be done a page at a time, but everything else can get the full benefit of the more efficient interface. Signed-off-by: Robin Murphy Acked-by: Alyssa Rosenzweig Reviewed-by: Steven Price Signed-off-by: Steven Price Link: https://patchwork.freedesktop.org/patch/msgid/daef7f8c134d989c55636a5790d8c0fcaca1bae3.1661205687.git.robin.murphy@arm.com --- drivers/gpu/drm/panfrost/panfrost_mmu.c | 40 +++++++++++++++---------- 1 file changed, 25 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c index d3f82b26a631..963d8e1997d5 100644 --- a/drivers/gpu/drm/panfrost/panfrost_mmu.c +++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c @@ -248,11 +248,15 @@ void panfrost_mmu_reset(struct panfrost_device *pfdev) mmu_write(pfdev, MMU_INT_MASK, ~0); } -static size_t get_pgsize(u64 addr, size_t size) +static size_t get_pgsize(u64 addr, size_t size, size_t *count) { - if (addr & (SZ_2M - 1) || size < SZ_2M) - return SZ_4K; + size_t blk_offset = -addr % SZ_2M; + if (blk_offset || size < SZ_2M) { + *count = min_not_zero(blk_offset, size) / SZ_4K; + return SZ_4K; + } + *count = size / SZ_2M; return SZ_2M; } @@ -287,12 +291,16 @@ static int mmu_map_sg(struct panfrost_device *pfdev, struct panfrost_mmu *mmu, dev_dbg(pfdev->dev, "map: as=%d, iova=%llx, paddr=%lx, len=%zx", mmu->as, iova, paddr, len); while (len) { - size_t pgsize = get_pgsize(iova | paddr, len); + size_t pgcount, mapped = 0; + size_t pgsize = get_pgsize(iova | paddr, len, &pgcount); - ops->map(ops, iova, paddr, pgsize, prot, GFP_KERNEL); - iova += pgsize; - paddr += pgsize; - len -= pgsize; + ops->map_pages(ops, iova, paddr, pgsize, pgcount, prot, + GFP_KERNEL, &mapped); + /* Don't get stuck if things have gone wrong */ + mapped = max(mapped, pgsize); + iova += mapped; + paddr += mapped; + len -= mapped; } } @@ -344,15 +352,17 @@ void panfrost_mmu_unmap(struct panfrost_gem_mapping *mapping) mapping->mmu->as, iova, len); while (unmapped_len < len) { - size_t unmapped_page; - size_t pgsize = get_pgsize(iova, len - unmapped_len); + size_t unmapped_page, pgcount; + size_t pgsize = get_pgsize(iova, len - unmapped_len, &pgcount); - if (ops->iova_to_phys(ops, iova)) { - unmapped_page = ops->unmap(ops, iova, pgsize, NULL); - WARN_ON(unmapped_page != pgsize); + if (bo->is_heap) + pgcount = 1; + if (!bo->is_heap || ops->iova_to_phys(ops, iova)) { + unmapped_page = ops->unmap_pages(ops, iova, pgsize, pgcount, NULL); + WARN_ON(unmapped_page != pgsize * pgcount); } - iova += pgsize; - unmapped_len += pgsize; + iova += pgsize * pgcount; + unmapped_len += pgsize * pgcount; } panfrost_mmu_flush_range(pfdev, mapping->mmu, From 0538fa09bb1073b19b197509c51c55496091d125 Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Thu, 28 Jul 2022 10:40:57 +0900 Subject: [PATCH 057/111] gpu/drm/bridge/cadence: avoid flush_scheduled_work() usage Like commit c4f135d643823a86 ("workqueue: Wrap flush_workqueue() using a macro") says, flush_scheduled_work() is dangerous and will be forbidden. We are on the way for removing all flush_scheduled_work() callers from the kernel, and this patch is for removing flush_scheduled_work() call from cadence driver. Since cdns-mhdp8546 driver uses 4 works mhdp->modeset_retry_work mhdp->hpd_work mhdp->hdcp.check_work mhdp->hdcp.prop_work I assume that flush_scheduled_work() in cdns_mhdp_remove() needs to wait for only these 4 works. Since mhdp->modeset_retry_work already uses cancel_work_sync(), I assume that flush_scheduled_work() needs to wait for only 3 works. But I came to wonder whether mhdp->hdcp.check_work should be flushed or cancelled. While flush_scheduled_work() waits for completion of works which were already queued to system_wq, mhdp->hdcp.check_work is a delayed work. That is, this work won't be queued to system_wq unless timeout expires. Current code will wait for mhdp->hdcp.check_work only if timeout already expired. If timeout is not expired yet, flush_scheduled_work() will fail to cancel mhdp->hdcp.check_work, and cdns_mhdp_hdcp_check_work() which is triggered by mhdp->hdcp.check_work will schedule hdcp->check_work, which is too late for flush_scheduled_work() to wait for completion of cdns_mhdp_hdcp_prop_work(). But since I couldn't get comments on how do we want to handle this race window [1], this patch chose "do nothing" for mhdp->hdcp.check_work and mhdp->hdcp.prop_work. That is, I assume that flush_scheduled_work() in cdns_mhdp_remove() needs to wait for only mhdp->hpd_work work. Link: https://lkml.kernel.org/r/943273cb-c2ec-24e3-5edb-64eacc6e2d30@I-love.SAKURA.ne.jp [1] Signed-off-by: Tetsuo Handa Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/216591bc-28bb-0453-10bb-59e268dff540@I-love.SAKURA.ne.jp --- drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c index ab63e7b11944..31442a922502 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c @@ -2605,7 +2605,8 @@ static int cdns_mhdp_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); cancel_work_sync(&mhdp->modeset_retry_work); - flush_scheduled_work(); + flush_work(&mhdp->hpd_work); + /* Ignoring mhdp->hdcp.check_work and mhdp->hdcp.prop_work here. */ clk_disable_unprepare(mhdp->clk); From 0af02a0e52030ca0b5acc4da6d3ee3303077277c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Winiarski?= Date: Wed, 17 Aug 2022 23:12:35 +0200 Subject: [PATCH 058/111] drm/cmdline-parser: Merge negative tests MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Negative tests can be expressed as a single parameterized test case, which highlights that we're following the same test logic (passing invalid cmdline and expecting drm_mode_parse_command_line_for_connector to fail), which improves readability. v2: s/negative/invalid to be consistent with other testcases in DRM Signed-off-by: Michał Winiarski Reviewed-by: Maíra Canal Signed-off-by: Maíra Canal Link: https://patchwork.freedesktop.org/patch/msgid/20220817211236.252091-1-michal.winiarski@intel.com --- .../gpu/drm/tests/drm_cmdline_parser_test.c | 293 ++++++------------ 1 file changed, 103 insertions(+), 190 deletions(-) diff --git a/drivers/gpu/drm/tests/drm_cmdline_parser_test.c b/drivers/gpu/drm/tests/drm_cmdline_parser_test.c index 59b29cdfdd35..3a46c7d6f2aa 100644 --- a/drivers/gpu/drm/tests/drm_cmdline_parser_test.c +++ b/drivers/gpu/drm/tests/drm_cmdline_parser_test.c @@ -109,24 +109,6 @@ static void drm_cmdline_test_force_d_only(struct kunit *test) KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_OFF); } -static void drm_cmdline_test_margin_only(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "m"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - -static void drm_cmdline_test_interlace_only(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "i"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - static void drm_cmdline_test_res(struct kunit *test) { struct drm_cmdline_mode mode = { }; @@ -149,42 +131,6 @@ static void drm_cmdline_test_res(struct kunit *test) KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); } -static void drm_cmdline_test_res_missing_x(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "x480"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - -static void drm_cmdline_test_res_missing_y(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "1024x"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - -static void drm_cmdline_test_res_bad_y(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "1024xtest"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - -static void drm_cmdline_test_res_missing_y_bpp(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "1024x-24"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - static void drm_cmdline_test_res_vesa(struct kunit *test) { struct drm_cmdline_mode mode = { }; @@ -274,15 +220,6 @@ static void drm_cmdline_test_res_bpp(struct kunit *test) KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); } -static void drm_cmdline_test_res_bad_bpp(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480-test"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - static void drm_cmdline_test_res_refresh(struct kunit *test) { struct drm_cmdline_mode mode = { }; @@ -306,15 +243,6 @@ static void drm_cmdline_test_res_refresh(struct kunit *test) KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); } -static void drm_cmdline_test_res_bad_refresh(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480@refresh"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - static void drm_cmdline_test_res_bpp_refresh(struct kunit *test) { struct drm_cmdline_mode mode = { }; @@ -411,15 +339,6 @@ static void drm_cmdline_test_res_bpp_refresh_force_off(struct kunit *test) KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_OFF); } -static void drm_cmdline_test_res_bpp_refresh_force_on_off(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480-24@60de"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - static void drm_cmdline_test_res_bpp_refresh_force_on(struct kunit *test) { struct drm_cmdline_mode mode = { }; @@ -563,24 +482,6 @@ static void drm_cmdline_test_res_vesa_margins(struct kunit *test) KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); } -static void drm_cmdline_test_res_invalid_mode(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480f"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - -static void drm_cmdline_test_res_bpp_wrong_place_mode(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480e-24"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - static void drm_cmdline_test_name(struct kunit *test) { struct drm_cmdline_mode mode = { }; @@ -608,42 +509,6 @@ static void drm_cmdline_test_name_bpp(struct kunit *test) KUNIT_EXPECT_EQ(test, mode.bpp, 24); } -static void drm_cmdline_test_name_bpp_refresh(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "NTSC-24@60"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - -static void drm_cmdline_test_name_refresh(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "NTSC@60"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - -static void drm_cmdline_test_name_refresh_wrong_mode(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "NTSC@60m"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - -static void drm_cmdline_test_name_refresh_invalid_mode(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "NTSC@60f"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - static void drm_cmdline_test_name_option(struct kunit *test) { struct drm_cmdline_mode mode = { }; @@ -762,33 +627,6 @@ static void drm_cmdline_test_rotate_270(struct kunit *test) KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); } -static void drm_cmdline_test_rotate_multiple(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480,rotate=0,rotate=90"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - -static void drm_cmdline_test_rotate_invalid_val(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480,rotate=42"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - -static void drm_cmdline_test_rotate_truncated(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480,rotate="; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - static void drm_cmdline_test_hmirror(struct kunit *test) { struct drm_cmdline_mode mode = { }; @@ -885,15 +723,6 @@ static void drm_cmdline_test_multiple_options(struct kunit *test) KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); } -static void drm_cmdline_test_invalid_option(struct kunit *test) -{ - struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480,test=42"; - - KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(cmdline, - &no_connector, &mode)); -} - static void drm_cmdline_test_bpp_extra_and_option(struct kunit *test) { struct drm_cmdline_mode mode = { }; @@ -1006,64 +835,148 @@ static void drm_cmdline_test_panel_orientation(struct kunit *test) KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); } +struct drm_cmdline_invalid_test { + const char *name; + const char *cmdline; +}; + +static void drm_cmdline_test_invalid(struct kunit *test) +{ + const struct drm_cmdline_invalid_test *params = test->param_value; + struct drm_cmdline_mode mode = { }; + + KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(params->cmdline, + &no_connector, + &mode)); +} + +static const struct drm_cmdline_invalid_test drm_cmdline_invalid_tests[] = { + { + .name = "margin_only", + .cmdline = "m", + }, + { + .name = "interlace_only", + .cmdline = "i", + }, + { + .name = "res_missing_x", + .cmdline = "x480", + }, + { + .name = "res_missing_y", + .cmdline = "1024x", + }, + { + .name = "res_bad_y", + .cmdline = "1024xtest", + }, + { + .name = "res_missing_y_bpp", + .cmdline = "1024x-24", + }, + { + .name = "res_bad_bpp", + .cmdline = "720x480-test", + }, + { + .name = "res_bad_refresh", + .cmdline = "720x480@refresh", + }, + { + .name = "res_bpp_refresh_force_on_off", + .cmdline = "720x480-24@60de", + }, + { + .name = "res_invalid_mode", + .cmdline = "720x480f", + }, + { + .name = "res_bpp_wrong_place_mode", + .cmdline = "720x480e-24", + }, + { + .name = "name_bpp_refresh", + .cmdline = "NTSC-24@60", + }, + { + .name = "name_refresh", + .cmdline = "NTSC@60", + }, + { + .name = "name_refresh_wrong_mode", + .cmdline = "NTSC@60m", + }, + { + .name = "name_refresh_invalid_mode", + .cmdline = "NTSC@60f", + }, + { + .name = "rotate_multiple", + .cmdline = "720x480,rotate=0,rotate=90", + }, + { + .name = "rotate_invalid_val", + .cmdline = "720x480,rotate=42", + }, + { + .name = "rotate_truncated", + .cmdline = "720x480,rotate=", + }, + { + .name = "invalid_option", + .cmdline = "720x480,test=42", + }, +}; + +static void drm_cmdline_invalid_desc(const struct drm_cmdline_invalid_test *t, + char *desc) +{ + sprintf(desc, "%s", t->name); +} + +KUNIT_ARRAY_PARAM(drm_cmdline_invalid, drm_cmdline_invalid_tests, drm_cmdline_invalid_desc); + static struct kunit_case drm_cmdline_parser_tests[] = { KUNIT_CASE(drm_cmdline_test_force_d_only), KUNIT_CASE(drm_cmdline_test_force_D_only_dvi), KUNIT_CASE(drm_cmdline_test_force_D_only_hdmi), KUNIT_CASE(drm_cmdline_test_force_D_only_not_digital), KUNIT_CASE(drm_cmdline_test_force_e_only), - KUNIT_CASE(drm_cmdline_test_margin_only), - KUNIT_CASE(drm_cmdline_test_interlace_only), KUNIT_CASE(drm_cmdline_test_res), - KUNIT_CASE(drm_cmdline_test_res_missing_x), - KUNIT_CASE(drm_cmdline_test_res_missing_y), - KUNIT_CASE(drm_cmdline_test_res_bad_y), - KUNIT_CASE(drm_cmdline_test_res_missing_y_bpp), KUNIT_CASE(drm_cmdline_test_res_vesa), KUNIT_CASE(drm_cmdline_test_res_vesa_rblank), KUNIT_CASE(drm_cmdline_test_res_rblank), KUNIT_CASE(drm_cmdline_test_res_bpp), - KUNIT_CASE(drm_cmdline_test_res_bad_bpp), KUNIT_CASE(drm_cmdline_test_res_refresh), - KUNIT_CASE(drm_cmdline_test_res_bad_refresh), KUNIT_CASE(drm_cmdline_test_res_bpp_refresh), KUNIT_CASE(drm_cmdline_test_res_bpp_refresh_interlaced), KUNIT_CASE(drm_cmdline_test_res_bpp_refresh_margins), KUNIT_CASE(drm_cmdline_test_res_bpp_refresh_force_off), - KUNIT_CASE(drm_cmdline_test_res_bpp_refresh_force_on_off), KUNIT_CASE(drm_cmdline_test_res_bpp_refresh_force_on), KUNIT_CASE(drm_cmdline_test_res_bpp_refresh_force_on_analog), KUNIT_CASE(drm_cmdline_test_res_bpp_refresh_force_on_digital), KUNIT_CASE(drm_cmdline_test_res_bpp_refresh_interlaced_margins_force_on), KUNIT_CASE(drm_cmdline_test_res_margins_force_on), KUNIT_CASE(drm_cmdline_test_res_vesa_margins), - KUNIT_CASE(drm_cmdline_test_res_invalid_mode), - KUNIT_CASE(drm_cmdline_test_res_bpp_wrong_place_mode), KUNIT_CASE(drm_cmdline_test_name), KUNIT_CASE(drm_cmdline_test_name_bpp), - KUNIT_CASE(drm_cmdline_test_name_refresh), - KUNIT_CASE(drm_cmdline_test_name_bpp_refresh), - KUNIT_CASE(drm_cmdline_test_name_refresh_wrong_mode), - KUNIT_CASE(drm_cmdline_test_name_refresh_invalid_mode), KUNIT_CASE(drm_cmdline_test_name_option), KUNIT_CASE(drm_cmdline_test_name_bpp_option), KUNIT_CASE(drm_cmdline_test_rotate_0), KUNIT_CASE(drm_cmdline_test_rotate_90), KUNIT_CASE(drm_cmdline_test_rotate_180), KUNIT_CASE(drm_cmdline_test_rotate_270), - KUNIT_CASE(drm_cmdline_test_rotate_multiple), - KUNIT_CASE(drm_cmdline_test_rotate_invalid_val), - KUNIT_CASE(drm_cmdline_test_rotate_truncated), KUNIT_CASE(drm_cmdline_test_hmirror), KUNIT_CASE(drm_cmdline_test_vmirror), KUNIT_CASE(drm_cmdline_test_margin_options), KUNIT_CASE(drm_cmdline_test_multiple_options), - KUNIT_CASE(drm_cmdline_test_invalid_option), KUNIT_CASE(drm_cmdline_test_bpp_extra_and_option), KUNIT_CASE(drm_cmdline_test_extra_and_option), KUNIT_CASE(drm_cmdline_test_freestanding_options), KUNIT_CASE(drm_cmdline_test_freestanding_force_e_and_options), KUNIT_CASE(drm_cmdline_test_panel_orientation), + KUNIT_CASE_PARAM(drm_cmdline_test_invalid, drm_cmdline_invalid_gen_params), {} }; From 169a32b76842c10fbe532cde6cc25e89bbf54341 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Winiarski?= Date: Wed, 17 Aug 2022 23:12:36 +0200 Subject: [PATCH 059/111] drm/cmdline-parser: Use assert when needed MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Expecting to observe a specific value, when the function responsible for setting the value has failed will lead to extra noise in test output. Use assert when the situation calls for it. Also - very small tidying up around the changed areas (whitespace). v2: Leave out the locals (drm_connector is huge) (lkp) Signed-off-by: Michał Winiarski Reviewed-by: Maíra Canal Signed-off-by: Maíra Canal Link: https://patchwork.freedesktop.org/patch/msgid/20220817211236.252091-2-michal.winiarski@intel.com --- .../gpu/drm/tests/drm_cmdline_parser_test.c | 80 +++++++++---------- 1 file changed, 40 insertions(+), 40 deletions(-) diff --git a/drivers/gpu/drm/tests/drm_cmdline_parser_test.c b/drivers/gpu/drm/tests/drm_cmdline_parser_test.c index 3a46c7d6f2aa..09b806e27506 100644 --- a/drivers/gpu/drm/tests/drm_cmdline_parser_test.c +++ b/drivers/gpu/drm/tests/drm_cmdline_parser_test.c @@ -16,7 +16,7 @@ static void drm_cmdline_test_force_e_only(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "e"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_FALSE(test, mode.specified); KUNIT_EXPECT_FALSE(test, mode.refresh_specified); @@ -34,7 +34,7 @@ static void drm_cmdline_test_force_D_only_not_digital(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "D"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_FALSE(test, mode.specified); KUNIT_EXPECT_FALSE(test, mode.refresh_specified); @@ -56,7 +56,7 @@ static void drm_cmdline_test_force_D_only_hdmi(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "D"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &connector_hdmi, &mode)); KUNIT_EXPECT_FALSE(test, mode.specified); KUNIT_EXPECT_FALSE(test, mode.refresh_specified); @@ -78,7 +78,7 @@ static void drm_cmdline_test_force_D_only_dvi(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "D"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &connector_dvi, &mode)); KUNIT_EXPECT_FALSE(test, mode.specified); KUNIT_EXPECT_FALSE(test, mode.refresh_specified); @@ -96,7 +96,7 @@ static void drm_cmdline_test_force_d_only(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "d"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_FALSE(test, mode.specified); KUNIT_EXPECT_FALSE(test, mode.refresh_specified); @@ -114,7 +114,7 @@ static void drm_cmdline_test_res(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -136,7 +136,7 @@ static void drm_cmdline_test_res_vesa(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480M"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -158,7 +158,7 @@ static void drm_cmdline_test_res_vesa_rblank(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480MR"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -180,7 +180,7 @@ static void drm_cmdline_test_res_rblank(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480R"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -202,7 +202,7 @@ static void drm_cmdline_test_res_bpp(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480-24"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -225,7 +225,7 @@ static void drm_cmdline_test_res_refresh(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480@60"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -248,7 +248,7 @@ static void drm_cmdline_test_res_bpp_refresh(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480-24@60"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -272,7 +272,7 @@ static void drm_cmdline_test_res_bpp_refresh_interlaced(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480-24@60i"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -294,9 +294,9 @@ static void drm_cmdline_test_res_bpp_refresh_interlaced(struct kunit *test) static void drm_cmdline_test_res_bpp_refresh_margins(struct kunit *test) { struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480-24@60m"; + const char *cmdline = "720x480-24@60m"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -318,9 +318,9 @@ static void drm_cmdline_test_res_bpp_refresh_margins(struct kunit *test) static void drm_cmdline_test_res_bpp_refresh_force_off(struct kunit *test) { struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480-24@60d"; + const char *cmdline = "720x480-24@60d"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -342,9 +342,9 @@ static void drm_cmdline_test_res_bpp_refresh_force_off(struct kunit *test) static void drm_cmdline_test_res_bpp_refresh_force_on(struct kunit *test) { struct drm_cmdline_mode mode = { }; - const char *cmdline = "720x480-24@60e"; + const char *cmdline = "720x480-24@60e"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -368,7 +368,7 @@ static void drm_cmdline_test_res_bpp_refresh_force_on_analog(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480-24@60D"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -395,7 +395,7 @@ static void drm_cmdline_test_res_bpp_refresh_force_on_digital(struct kunit *test }; const char *cmdline = "720x480-24@60D"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -443,7 +443,7 @@ static void drm_cmdline_test_res_margins_force_on(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480me"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -465,7 +465,7 @@ static void drm_cmdline_test_res_vesa_margins(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480Mm"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -487,7 +487,7 @@ static void drm_cmdline_test_name(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "NTSC"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_STREQ(test, mode.name, "NTSC"); KUNIT_EXPECT_FALSE(test, mode.refresh_specified); @@ -499,7 +499,7 @@ static void drm_cmdline_test_name_bpp(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "NTSC-24"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_STREQ(test, mode.name, "NTSC"); @@ -514,7 +514,7 @@ static void drm_cmdline_test_name_option(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "NTSC,rotate=180"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_STREQ(test, mode.name, "NTSC"); @@ -526,7 +526,7 @@ static void drm_cmdline_test_name_bpp_option(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "NTSC-24,rotate=180"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_STREQ(test, mode.name, "NTSC"); @@ -540,7 +540,7 @@ static void drm_cmdline_test_rotate_0(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480,rotate=0"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -563,7 +563,7 @@ static void drm_cmdline_test_rotate_90(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480,rotate=90"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -586,7 +586,7 @@ static void drm_cmdline_test_rotate_180(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480,rotate=180"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -609,7 +609,7 @@ static void drm_cmdline_test_rotate_270(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480,rotate=270"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -632,7 +632,7 @@ static void drm_cmdline_test_hmirror(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480,reflect_x"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -655,7 +655,7 @@ static void drm_cmdline_test_vmirror(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480,reflect_y"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -679,7 +679,7 @@ static void drm_cmdline_test_margin_options(struct kunit *test) const char *cmdline = "720x480,margin_right=14,margin_left=24,margin_bottom=36,margin_top=42"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -705,7 +705,7 @@ static void drm_cmdline_test_multiple_options(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480,rotate=270,reflect_x"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -728,7 +728,7 @@ static void drm_cmdline_test_bpp_extra_and_option(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480-24e,rotate=180"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -752,7 +752,7 @@ static void drm_cmdline_test_extra_and_option(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "720x480e,rotate=180"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_TRUE(test, mode.specified); KUNIT_EXPECT_EQ(test, mode.xres, 720); @@ -774,7 +774,7 @@ static void drm_cmdline_test_freestanding_options(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "margin_right=14,margin_left=24,margin_bottom=36,margin_top=42"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_FALSE(test, mode.specified); KUNIT_EXPECT_FALSE(test, mode.refresh_specified); @@ -797,7 +797,7 @@ static void drm_cmdline_test_freestanding_force_e_and_options(struct kunit *test struct drm_cmdline_mode mode = { }; const char *cmdline = "e,margin_right=14,margin_left=24,margin_bottom=36,margin_top=42"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_FALSE(test, mode.specified); KUNIT_EXPECT_FALSE(test, mode.refresh_specified); @@ -820,7 +820,7 @@ static void drm_cmdline_test_panel_orientation(struct kunit *test) struct drm_cmdline_mode mode = { }; const char *cmdline = "panel_orientation=upside_down"; - KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, &no_connector, &mode)); KUNIT_EXPECT_FALSE(test, mode.specified); KUNIT_EXPECT_FALSE(test, mode.refresh_specified); From e06a46087d8bbde7ca31361789edfe026b08fdce Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Thu, 1 Sep 2022 19:19:33 +0300 Subject: [PATCH 060/111] drm/i915/dp_mst: Fix mst_mgr lookup during atomic check If an MST connector was disabled in the old state during a commit, the connector's best_encoder will be NULL, so we can't look up mst_mgr via it. Do the lookup instead via intel_connector->mst_port which always points to the primary encoder. This fixes the following: [ 58.922866] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 58.922867] #PF: supervisor read access in kernel mode [ 58.922868] #PF: error_code(0x0000) - not-present page [ 58.922869] PGD 0 P4D 0 [ 58.922870] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 58.922872] CPU: 0 PID: 133 Comm: kworker/0:2 Tainted: G U 6.0.0-rc3-imre+ #560 [ 58.922874] Hardware name: Intel Corporation Alder Lake Client Platform/AlderLake-P DDR5 RVP, BIOS ADLPFWI1.R00.3135.A00.2203251419 03/25/2022 [ 58.922874] Workqueue: events output_poll_execute [drm_kms_helper] [ 58.922879] RIP: 0010:intel_dp_mst_atomic_check+0xbb/0x1c0 [i915] [ 58.922955] Code: 5b 7b f6 ff 84 c0 75 41 48 8b 44 24 18 65 48 2b 04 25 28 00 00 00 0f 85 ff 00 00 00 48 8b 45 10 48 8b 93 10 07 00 00 4c 89 e7 <48> 8b b0 70 01 00 00 48 83 c4 20 5b 5d 48 81 c6 f0 0c 00 00 41 5c [ 58.922956] RSP: 0018:ffffc90000633a88 EFLAGS: 00010246 [ 58.922957] RAX: 0000000000000000 RBX: ffff888117d19000 RCX: ffff888101893308 [ 58.922958] RDX: ffff888122981000 RSI: ffffffff82309ecc RDI: ffff888114da6800 [ 58.922959] RBP: ffff8881094bab48 R08: 0000000081917436 R09: 0000000068191743 [ 58.922960] R10: 0000000000000001 R11: 0000000000000001 R12: ffff888114da6800 [ 58.922960] R13: ffff8881143f8000 R14: 0000000000000000 R15: ffff888119bf2000 [ 58.922961] FS: 0000000000000000(0000) GS:ffff888496200000(0000) knlGS:0000000000000000 [ 58.922962] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.922962] CR2: 0000000000000170 CR3: 0000000005612004 CR4: 0000000000770ef0 [ 58.922963] PKRU: 55555554 [ 58.922963] Call Trace: [ 58.922964] [ 58.922966] drm_atomic_helper_check_modeset+0x3f8/0xc70 [drm_kms_helper] [ 58.922972] intel_atomic_check+0xb1/0x3180 [i915] [ 58.923059] ? find_held_lock+0x2b/0x80 [ 58.923064] drm_atomic_check_only+0x5d3/0xa60 [drm] [ 58.923082] drm_atomic_commit+0x56/0xc0 [drm] [ 58.923097] ? drm_plane_get_damage_clips.cold+0x1c/0x1c [drm] [ 58.923114] drm_client_modeset_commit_atomic+0x235/0x280 [drm] [ 58.923132] drm_client_modeset_commit_locked+0x5b/0x190 [drm] [ 58.923148] drm_client_modeset_commit+0x24/0x50 [drm] [ 58.923164] drm_fb_helper_set_par+0xae/0xe0 [drm_kms_helper] [ 58.923171] drm_fb_helper_hotplug_event+0xd5/0xf0 [drm_kms_helper] [ 58.923178] output_poll_execute+0xac/0x200 [drm_kms_helper] [ 58.923187] process_one_work+0x268/0x580 [ 58.923190] ? process_one_work+0x580/0x580 [ 58.923191] worker_thread+0x52/0x3b0 [ 58.923193] ? process_one_work+0x580/0x580 [ 58.923195] kthread+0xf0/0x120 [ 58.923196] ? kthread_complete_and_exit+0x20/0x20 [ 58.923198] ret_from_fork+0x1f/0x30 [ 58.923202] Fixes: ffac9721939d ("drm/display/dp_mst: Don't open code modeset checks for releasing time slots") Cc: Lyude Paul Signed-off-by: Imre Deak Reviewed-by: Lyude Paul Link: https://patchwork.freedesktop.org/patch/msgid/20220901161933.1004778-1-imre.deak@intel.com --- drivers/gpu/drm/i915/display/intel_dp_mst.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 13abe2b2170e..7713c19042f3 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -315,11 +315,8 @@ intel_dp_mst_atomic_check(struct drm_connector *connector, struct drm_atomic_state *_state) { struct intel_atomic_state *state = to_intel_atomic_state(_state); - struct drm_connector_state *old_conn_state = - drm_atomic_get_old_connector_state(&state->base, connector); struct intel_connector *intel_connector = to_intel_connector(connector); - struct drm_dp_mst_topology_mgr *mgr; int ret; ret = intel_digital_connector_atomic_check(connector, &state->base); @@ -330,8 +327,9 @@ intel_dp_mst_atomic_check(struct drm_connector *connector, if (ret) return ret; - mgr = &enc_to_mst(to_intel_encoder(old_conn_state->best_encoder))->primary->dp.mst_mgr; - return drm_dp_atomic_release_time_slots(&state->base, mgr, intel_connector->port); + return drm_dp_atomic_release_time_slots(&state->base, + &intel_connector->mst_port->mst_mgr, + intel_connector->port); } static void clear_act_sent(struct intel_encoder *encoder, From 3fc307dcec8b9aeecae8c1bf2c97f770805daf4e Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Wed, 31 Aug 2022 11:26:51 +0300 Subject: [PATCH 061/111] drm/bridge: ti-sn65dsi86: Reject modes with too large blanking The front and back porch registers are 8 bits, and pulse width registers are 15 bits, so reject any modes with larger periods. Signed-off-by: Tomi Valkeinen Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220831082653.20449-2-tomi.valkeinen@ideasonboard.com --- drivers/gpu/drm/bridge/ti-sn65dsi86.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index 90bbabde1595..09d3c65fa2ba 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -747,6 +747,29 @@ ti_sn_bridge_mode_valid(struct drm_bridge *bridge, if (mode->clock > 594000) return MODE_CLOCK_HIGH; + /* + * The front and back porch registers are 8 bits, and pulse width + * registers are 15 bits, so reject any modes with larger periods. + */ + + if ((mode->hsync_start - mode->hdisplay) > 0xff) + return MODE_HBLANK_WIDE; + + if ((mode->vsync_start - mode->vdisplay) > 0xff) + return MODE_VBLANK_WIDE; + + if ((mode->hsync_end - mode->hsync_start) > 0x7fff) + return MODE_HSYNC_WIDE; + + if ((mode->vsync_end - mode->vsync_start) > 0x7fff) + return MODE_VSYNC_WIDE; + + if ((mode->htotal - mode->hsync_end) > 0xff) + return MODE_HBLANK_WIDE; + + if ((mode->vtotal - mode->vsync_end) > 0xff) + return MODE_VBLANK_WIDE; + return MODE_OK; } From e43d5864f36ab32f831b1af7bc2171031e58e2ac Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 31 Aug 2022 11:26:52 +0300 Subject: [PATCH 062/111] drm/bridge: ti-sn65dsi86: Support DisplayPort (non-eDP) mode Despite the SN65DSI86 being an eDP bridge, on some systems its output is routed to a DisplayPort connector. Enable DisplayPort mode when the next component in the display pipeline is detected as a DisplayPort connector, and disable eDP features in that case. Signed-off-by: Laurent Pinchart Reworked to set bridge type based on the next bridge/connector. Signed-off-by: Kieran Bingham Reviewed-by: Laurent Pinchart Reviewed-by: Douglas Anderson Signed-off-by: Tomi Valkeinen -- Changes since v1/RFC: - Rebased on top of "drm/bridge: ti-sn65dsi86: switch to devm_drm_of_get_bridge" - eDP/DP mode determined from the next bridge connector type. Changes since v2: - Remove setting of Standard DP Scrambler Seed. (It's read-only). - Prevent setting DP_EDP_CONFIGURATION_SET in ti_sn_bridge_atomic_enable() - Use Doug's suggested text for disabling ASSR on DP mode. Changes since v3: - Remove ASSR_CONTROL definition Changes since v4: - Refactor code to configure the DP/eDP scrambler in one place. Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220831082653.20449-3-tomi.valkeinen@ideasonboard.com --- drivers/gpu/drm/bridge/ti-sn65dsi86.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index 09d3c65fa2ba..6e053e2af229 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -92,6 +92,8 @@ #define SN_DATARATE_CONFIG_REG 0x94 #define DP_DATARATE_MASK GENMASK(7, 5) #define DP_DATARATE(x) ((x) << 5) +#define SN_TRAINING_SETTING_REG 0x95 +#define SCRAMBLE_DISABLE BIT(4) #define SN_ML_TX_MODE_REG 0x96 #define ML_TX_MAIN_LINK_OFF 0 #define ML_TX_NORMAL_MODE BIT(0) @@ -1070,12 +1072,23 @@ static void ti_sn_bridge_atomic_enable(struct drm_bridge *bridge, /* * The SN65DSI86 only supports ASSR Display Authentication method and - * this method is enabled by default. An eDP panel must support this + * this method is enabled for eDP panels. An eDP panel must support this * authentication method. We need to enable this method in the eDP panel * at DisplayPort address 0x0010A prior to link training. + * + * As only ASSR is supported by SN65DSI86, for full DisplayPort displays + * we need to disable the scrambler. */ - drm_dp_dpcd_writeb(&pdata->aux, DP_EDP_CONFIGURATION_SET, - DP_ALTERNATE_SCRAMBLER_RESET_ENABLE); + if (pdata->bridge.type == DRM_MODE_CONNECTOR_eDP) { + drm_dp_dpcd_writeb(&pdata->aux, DP_EDP_CONFIGURATION_SET, + DP_ALTERNATE_SCRAMBLER_RESET_ENABLE); + + regmap_update_bits(pdata->regmap, SN_TRAINING_SETTING_REG, + SCRAMBLE_DISABLE, 0); + } else { + regmap_update_bits(pdata->regmap, SN_TRAINING_SETTING_REG, + SCRAMBLE_DISABLE, SCRAMBLE_DISABLE); + } bpp = ti_sn_bridge_get_bpp(connector); /* Set the DP output format (18 bpp or 24 bpp) */ @@ -1241,6 +1254,8 @@ static int ti_sn_bridge_probe(struct auxiliary_device *adev, pdata->bridge.funcs = &ti_sn_bridge_funcs; pdata->bridge.of_node = np; + pdata->bridge.type = pdata->next_bridge->type == DRM_MODE_CONNECTOR_DisplayPort + ? DRM_MODE_CONNECTOR_DisplayPort : DRM_MODE_CONNECTOR_eDP; drm_bridge_add(&pdata->bridge); From c312b0df3b13e4c533743bb2c37fd1bc237368e5 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 31 Aug 2022 11:26:53 +0300 Subject: [PATCH 063/111] drm/bridge: ti-sn65dsi86: Implement bridge connector operations for DP Implement the bridge connector-related .get_edid() and .detect() operations for full DP mode, and report the related bridge capabilities and type. Signed-off-by: Laurent Pinchart Signed-off-by: Kieran Bingham Signed-off-by: Tomi Valkeinen Reviewed-by: Douglas Anderson Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220831082653.20449-4-tomi.valkeinen@ideasonboard.com --- drivers/gpu/drm/bridge/ti-sn65dsi86.c | 28 +++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index 6e053e2af229..3c3561942eb6 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include #include @@ -68,6 +69,7 @@ #define BPP_18_RGB BIT(0) #define SN_HPD_DISABLE_REG 0x5C #define HPD_DISABLE BIT(0) +#define HPD_DEBOUNCED_STATE BIT(4) #define SN_GPIO_IO_REG 0x5E #define SN_GPIO_INPUT_SHIFT 4 #define SN_GPIO_OUTPUT_SHIFT 0 @@ -1158,10 +1160,33 @@ static void ti_sn_bridge_atomic_post_disable(struct drm_bridge *bridge, pm_runtime_put_sync(pdata->dev); } +static enum drm_connector_status ti_sn_bridge_detect(struct drm_bridge *bridge) +{ + struct ti_sn65dsi86 *pdata = bridge_to_ti_sn65dsi86(bridge); + int val = 0; + + pm_runtime_get_sync(pdata->dev); + regmap_read(pdata->regmap, SN_HPD_DISABLE_REG, &val); + pm_runtime_put_autosuspend(pdata->dev); + + return val & HPD_DEBOUNCED_STATE ? connector_status_connected + : connector_status_disconnected; +} + +static struct edid *ti_sn_bridge_get_edid(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + struct ti_sn65dsi86 *pdata = bridge_to_ti_sn65dsi86(bridge); + + return drm_get_edid(connector, &pdata->aux.ddc); +} + static const struct drm_bridge_funcs ti_sn_bridge_funcs = { .attach = ti_sn_bridge_attach, .detach = ti_sn_bridge_detach, .mode_valid = ti_sn_bridge_mode_valid, + .get_edid = ti_sn_bridge_get_edid, + .detect = ti_sn_bridge_detect, .atomic_pre_enable = ti_sn_bridge_atomic_pre_enable, .atomic_enable = ti_sn_bridge_atomic_enable, .atomic_disable = ti_sn_bridge_atomic_disable, @@ -1257,6 +1282,9 @@ static int ti_sn_bridge_probe(struct auxiliary_device *adev, pdata->bridge.type = pdata->next_bridge->type == DRM_MODE_CONNECTOR_DisplayPort ? DRM_MODE_CONNECTOR_DisplayPort : DRM_MODE_CONNECTOR_eDP; + if (pdata->bridge.type == DRM_MODE_CONNECTOR_DisplayPort) + pdata->bridge.ops = DRM_BRIDGE_OP_EDID | DRM_BRIDGE_OP_DETECT; + drm_bridge_add(&pdata->bridge); ret = ti_sn_attach_host(pdata); From a4be71430c76eca43679e8485085c230afa84460 Mon Sep 17 00:00:00 2001 From: Chris Morgan Date: Fri, 2 Sep 2022 10:39:05 -0500 Subject: [PATCH 064/111] dt-bindings: Add byteswap order to chrontel ch7033 Update dt-binding documentation to add support for setting byteswap of chrontel ch7033. New property name of chrontel,byteswap added to set the byteswap order. This property is optional. Signed-off-by: Chris Morgan Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220902153906.31000-2-macroalpha82@gmail.com --- .../bindings/display/bridge/chrontel,ch7033.yaml | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/devicetree/bindings/display/bridge/chrontel,ch7033.yaml b/Documentation/devicetree/bindings/display/bridge/chrontel,ch7033.yaml index bb6289c7d375..984b90893583 100644 --- a/Documentation/devicetree/bindings/display/bridge/chrontel,ch7033.yaml +++ b/Documentation/devicetree/bindings/display/bridge/chrontel,ch7033.yaml @@ -14,6 +14,19 @@ properties: compatible: const: chrontel,ch7033 + chrontel,byteswap: + $ref: /schemas/types.yaml#/definitions/uint8 + enum: + - 0 # BYTE_SWAP_RGB + - 1 # BYTE_SWAP_RBG + - 2 # BYTE_SWAP_GRB + - 3 # BYTE_SWAP_GBR + - 4 # BYTE_SWAP_BRG + - 5 # BYTE_SWAP_BGR + description: | + Set the byteswap value of the bridge. This is optional and if not + set value of BYTE_SWAP_BGR is used. + reg: maxItems: 1 description: I2C address of the device From ce9564cfc9aea65e68eb343c599317633bc2321a Mon Sep 17 00:00:00 2001 From: Chris Morgan Date: Fri, 2 Sep 2022 10:39:06 -0500 Subject: [PATCH 065/111] drm/bridge: chrontel-ch7033: Add byteswap order setting Add the option to set the byteswap order in the devicetree. For the official HDMI DIP for the NTC CHIP the byteswap order needs to be RGB, however the driver sets it as BGR. With this patch the driver will remain at BGR unless manually specified via devicetree. Signed-off-by: Chris Morgan Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220902153906.31000-3-macroalpha82@gmail.com --- drivers/gpu/drm/bridge/chrontel-ch7033.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/chrontel-ch7033.c b/drivers/gpu/drm/bridge/chrontel-ch7033.c index ba060277c3fd..c5719908ce2d 100644 --- a/drivers/gpu/drm/bridge/chrontel-ch7033.c +++ b/drivers/gpu/drm/bridge/chrontel-ch7033.c @@ -68,6 +68,7 @@ enum { BYTE_SWAP_GBR = 3, BYTE_SWAP_BRG = 4, BYTE_SWAP_BGR = 5, + BYTE_SWAP_MAX = 6, }; /* Page 0, Register 0x19 */ @@ -355,6 +356,8 @@ static void ch7033_bridge_mode_set(struct drm_bridge *bridge, int hsynclen = mode->hsync_end - mode->hsync_start; int vbporch = mode->vsync_start - mode->vdisplay; int vsynclen = mode->vsync_end - mode->vsync_start; + u8 byte_swap; + int ret; /* * Page 4 @@ -398,8 +401,16 @@ static void ch7033_bridge_mode_set(struct drm_bridge *bridge, regmap_write(priv->regmap, 0x15, vbporch); regmap_write(priv->regmap, 0x16, vsynclen); - /* Input color swap. */ - regmap_update_bits(priv->regmap, 0x18, SWAP, BYTE_SWAP_BGR); + /* Input color swap. Byte order is optional and will default to + * BYTE_SWAP_BGR to preserve backwards compatibility with existing + * driver. + */ + ret = of_property_read_u8(priv->bridge.of_node, "chrontel,byteswap", + &byte_swap); + if (!ret && byte_swap < BYTE_SWAP_MAX) + regmap_update_bits(priv->regmap, 0x18, SWAP, byte_swap); + else + regmap_update_bits(priv->regmap, 0x18, SWAP, BYTE_SWAP_BGR); /* Input clock and sync polarity. */ regmap_update_bits(priv->regmap, 0x19, 0x1, mode->clock >> 16); From a2ce58e8f9e4cef389a04077d052f8135f380c5c Mon Sep 17 00:00:00 2001 From: Markus Schneider-Pargmann Date: Thu, 1 Sep 2022 12:41:40 +0800 Subject: [PATCH 066/111] dt-bindings: mediatek,dp: Add Display Port binding This controller is present on several mediatek hardware. Currently mt8195 and mt8395 have this controller without a functional difference, so only one compatible field is added. The controller can have two forms, as a normal display port and as an embedded display port. Signed-off-by: Markus Schneider-Pargmann Signed-off-by: Guillaume Ranquet Signed-off-by: Bo-Chen Chen Reviewed-by: Rob Herring Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Dmitry Osipenko Link: https://patchwork.freedesktop.org/patch/msgid/20220901044149.16782-2-rex-bc.chen@mediatek.com --- .../display/mediatek/mediatek,dp.yaml | 116 ++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml new file mode 100644 index 000000000000..ff781f2174a0 --- /dev/null +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml @@ -0,0 +1,116 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/mediatek/mediatek,dp.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek Display Port Controller + +maintainers: + - Chun-Kuang Hu + - Jitao shi + +description: | + MediaTek DP and eDP are different hardwares and there are some features + which are not supported for eDP. For example, audio is not supported for + eDP. Therefore, we need to use two different compatibles to describe them. + In addition, We just need to enable the power domain of DP, so the clock + of DP is generated by itself and we are not using other PLL to generate + clocks. + +properties: + compatible: + enum: + - mediatek,mt8195-dp-tx + - mediatek,mt8195-edp-tx + + reg: + maxItems: 1 + + nvmem-cells: + maxItems: 1 + description: efuse data for display port calibration + + nvmem-cell-names: + const: dp_calibration_data + + power-domains: + maxItems: 1 + + interrupts: + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: Input endpoint of the controller, usually dp_intf + + port@1: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: Output endpoint of the controller + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + properties: + data-lanes: + description: | + number of lanes supported by the hardware. + The possible values: + 0 - For 1 lane enabled in IP. + 0 1 - For 2 lanes enabled in IP. + 0 1 2 3 - For 4 lanes enabled in IP. + minItems: 1 + maxItems: 4 + required: + - data-lanes + + required: + - port@0 + - port@1 + + max-linkrate-mhz: + enum: [ 1620, 2700, 5400, 8100 ] + description: maximum link rate supported by the hardware. + +required: + - compatible + - reg + - interrupts + - ports + - max-linkrate-mhz + +additionalProperties: false + +examples: + - | + #include + #include + dptx@1c600000 { + compatible = "mediatek,mt8195-dp-tx"; + reg = <0x1c600000 0x8000>; + power-domains = <&spm MT8195_POWER_DOMAIN_DP_TX>; + interrupts = ; + max-linkrate-mhz = <8100>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + dptx_in: endpoint { + remote-endpoint = <&dp_intf0_out>; + }; + }; + port@1 { + reg = <1>; + dptx_out: endpoint { + data-lanes = <0 1 2 3>; + }; + }; + }; + }; From f89aa0b6db18dea3c3c8ef266cc6c9fd8dff2d72 Mon Sep 17 00:00:00 2001 From: Markus Schneider-Pargmann Date: Thu, 1 Sep 2022 12:41:41 +0800 Subject: [PATCH 067/111] video/hdmi: Add audio_infoframe packing for DP Similar to HDMI, DP uses audio infoframes as well which are structured very similar to the HDMI ones. This patch adds a helper function to pack the HDMI audio infoframe for DP, called hdmi_audio_infoframe_pack_for_dp(). hdmi_audio_infoframe_pack_only() is split into two parts. One of them packs the payload only and can be used for HDMI and DP. Also constify the frame parameter in hdmi_audio_infoframe_check() as it is passed to hdmi_audio_infoframe_check_only() which expects a const. Signed-off-by: Markus Schneider-Pargmann Signed-off-by: Guillaume Ranquet Signed-off-by: Bo-Chen Chen Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Dmitry Osipenko Link: https://patchwork.freedesktop.org/patch/msgid/20220901044149.16782-3-rex-bc.chen@mediatek.com --- drivers/video/hdmi.c | 82 +++++++++++++++++++++++++++--------- include/drm/display/drm_dp.h | 2 + include/linux/hdmi.h | 7 ++- 3 files changed, 71 insertions(+), 20 deletions(-) diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c index 947be761dfa4..03c7f27dde49 100644 --- a/drivers/video/hdmi.c +++ b/drivers/video/hdmi.c @@ -21,6 +21,7 @@ * DEALINGS IN THE SOFTWARE. */ +#include #include #include #include @@ -381,12 +382,34 @@ static int hdmi_audio_infoframe_check_only(const struct hdmi_audio_infoframe *fr * * Returns 0 on success or a negative error code on failure. */ -int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame) +int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame) { return hdmi_audio_infoframe_check_only(frame); } EXPORT_SYMBOL(hdmi_audio_infoframe_check); +static void +hdmi_audio_infoframe_pack_payload(const struct hdmi_audio_infoframe *frame, + u8 *buffer) +{ + u8 channels; + + if (frame->channels >= 2) + channels = frame->channels - 1; + else + channels = 0; + + buffer[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); + buffer[1] = ((frame->sample_frequency & 0x7) << 2) | + (frame->sample_size & 0x3); + buffer[2] = frame->coding_type_ext & 0x1f; + buffer[3] = frame->channel_allocation; + buffer[4] = (frame->level_shift_value & 0xf) << 3; + + if (frame->downmix_inhibit) + buffer[4] |= BIT(7); +} + /** * hdmi_audio_infoframe_pack_only() - write HDMI audio infoframe to binary buffer * @frame: HDMI audio infoframe @@ -404,7 +427,6 @@ EXPORT_SYMBOL(hdmi_audio_infoframe_check); ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, void *buffer, size_t size) { - unsigned char channels; u8 *ptr = buffer; size_t length; int ret; @@ -420,28 +442,13 @@ ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, memset(buffer, 0, size); - if (frame->channels >= 2) - channels = frame->channels - 1; - else - channels = 0; - ptr[0] = frame->type; ptr[1] = frame->version; ptr[2] = frame->length; ptr[3] = 0; /* checksum */ - /* start infoframe payload */ - ptr += HDMI_INFOFRAME_HEADER_SIZE; - - ptr[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); - ptr[1] = ((frame->sample_frequency & 0x7) << 2) | - (frame->sample_size & 0x3); - ptr[2] = frame->coding_type_ext & 0x1f; - ptr[3] = frame->channel_allocation; - ptr[4] = (frame->level_shift_value & 0xf) << 3; - - if (frame->downmix_inhibit) - ptr[4] |= BIT(7); + hdmi_audio_infoframe_pack_payload(frame, + ptr + HDMI_INFOFRAME_HEADER_SIZE); hdmi_infoframe_set_checksum(buffer, length); @@ -479,6 +486,43 @@ ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, } EXPORT_SYMBOL(hdmi_audio_infoframe_pack); +/** + * hdmi_audio_infoframe_pack_for_dp - Pack a HDMI Audio infoframe for DisplayPort + * + * @frame: HDMI Audio infoframe + * @sdp: Secondary data packet for DisplayPort. + * @dp_version: DisplayPort version to be encoded in the header + * + * Packs a HDMI Audio Infoframe to be sent over DisplayPort. This function + * fills the secondary data packet to be used for DisplayPort. + * + * Return: Number of total written bytes or a negative errno on failure. + */ +ssize_t +hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame, + struct dp_sdp *sdp, u8 dp_version) +{ + int ret; + + ret = hdmi_audio_infoframe_check(frame); + if (ret) + return ret; + + memset(sdp->db, 0, sizeof(sdp->db)); + + /* Secondary-data packet header */ + sdp->sdp_header.HB0 = 0; + sdp->sdp_header.HB1 = frame->type; + sdp->sdp_header.HB2 = DP_SDP_AUDIO_INFOFRAME_HB2; + sdp->sdp_header.HB3 = (dp_version & 0x3f) << 2; + + hdmi_audio_infoframe_pack_payload(frame, sdp->db); + + /* Return size = frame length + four HB for sdp_header */ + return frame->length + 4; +} +EXPORT_SYMBOL(hdmi_audio_infoframe_pack_for_dp); + /** * hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe * @frame: HDMI vendor infoframe diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h index 9e3aff7e68bb..6c0871164771 100644 --- a/include/drm/display/drm_dp.h +++ b/include/drm/display/drm_dp.h @@ -1536,6 +1536,8 @@ enum drm_dp_phy { #define DP_SDP_VSC_EXT_CEA 0x21 /* DP 1.4 */ /* 0x80+ CEA-861 infoframe types */ +#define DP_SDP_AUDIO_INFOFRAME_HB2 0x1b + /** * struct dp_sdp_header - DP secondary data packet header * @HB0: Secondary Data Packet ID diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h index c8ec982ff498..2f4dcc8d060e 100644 --- a/include/linux/hdmi.h +++ b/include/linux/hdmi.h @@ -336,7 +336,12 @@ ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, void *buffer, size_t size); ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, void *buffer, size_t size); -int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame); +int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame); + +struct dp_sdp; +ssize_t +hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame, + struct dp_sdp *sdp, u8 dp_version); enum hdmi_3d_structure { HDMI_3D_STRUCTURE_INVALID = -1, From f70ac097a2cf5d4b67b2c1bbb73196c573ffcb7b Mon Sep 17 00:00:00 2001 From: Markus Schneider-Pargmann Date: Thu, 1 Sep 2022 12:41:42 +0800 Subject: [PATCH 068/111] drm/mediatek: Add MT8195 Embedded DisplayPort driver This patch adds a embedded displayport driver for the MediaTek mt8195 SoC. It supports the MT8195, the embedded DisplayPort units. It offers DisplayPort 1.4 with up to 4 lanes. The driver creates a child device for the phy. The child device will never exist without the parent being active. As they are sharing a register range, the parent passes a regmap pointer to the child so that both can work with the same register range. The phy driver sets device data that is read by the parent to get the phy device that can be used to control the phy properties. This driver is based on an initial version by Jitao shi Signed-off-by: Markus Schneider-Pargmann Signed-off-by: Guillaume Ranquet Signed-off-by: Bo-Chen Chen Reviewed-by: CK Hu Tested-by: AngeloGioacchino Del Regno Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Dmitry Osipenko Link: https://patchwork.freedesktop.org/patch/msgid/20220901044149.16782-4-rex-bc.chen@mediatek.com --- drivers/gpu/drm/mediatek/Kconfig | 9 + drivers/gpu/drm/mediatek/Makefile | 2 + drivers/gpu/drm/mediatek/mtk_dp.c | 1999 +++++++++++++++++++++++++ drivers/gpu/drm/mediatek/mtk_dp_reg.h | 305 ++++ 4 files changed, 2315 insertions(+) create mode 100644 drivers/gpu/drm/mediatek/mtk_dp.c create mode 100644 drivers/gpu/drm/mediatek/mtk_dp_reg.h diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig index 6d7d0e207082..369e495d0c3e 100644 --- a/drivers/gpu/drm/mediatek/Kconfig +++ b/drivers/gpu/drm/mediatek/Kconfig @@ -21,6 +21,15 @@ config DRM_MEDIATEK This driver provides kernel mode setting and buffer management to userspace. +config DRM_MEDIATEK_DP + tristate "DRM DPTX Support for MediaTek SoCs" + depends on DRM_MEDIATEK + select PHY_MTK_DP + select DRM_DISPLAY_HELPER + select DRM_DISPLAY_DP_HELPER + help + DRM/KMS Display Port driver for MediaTek SoCs. + config DRM_MEDIATEK_HDMI tristate "DRM HDMI Support for Mediatek SoCs" depends on DRM_MEDIATEK diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile index 6e604a933ed0..3517d1c65cd7 100644 --- a/drivers/gpu/drm/mediatek/Makefile +++ b/drivers/gpu/drm/mediatek/Makefile @@ -23,3 +23,5 @@ mediatek-drm-hdmi-objs := mtk_cec.o \ mtk_hdmi_ddc.o obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o + +obj-$(CONFIG_DRM_MEDIATEK_DP) += mtk_dp.o diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c new file mode 100644 index 000000000000..e2ec9b02b1aa --- /dev/null +++ b/drivers/gpu/drm/mediatek/mtk_dp.c @@ -0,0 +1,1999 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2019-2022 MediaTek Inc. + * Copyright (c) 2022 BayLibre + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include