For some power domains like vpu_core on MT8183 whose sram need to do clock
and internal isolation while power on/off sram. We add a cap
"MTK_SCPD_SRAM_ISO" to judge if we need to do the extra sram isolation
control or not.
Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20201030113622.201188-8-enric.balletbo@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Apart from the infracfg block, the SMI block is used to enable the bus
protection for some power domains. Add support for this block.
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20201030113622.201188-7-enric.balletbo@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Bus protection is not exclusively done by calling the infracfg misc driver.
Make the calls for setting and clearing the bus protection generic so
that we can use other blocks for it as well.
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20201030113622.201188-6-enric.balletbo@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Bus protection will need to update more then one register
in infracfg. Add support for several operations.
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20201030113622.201188-5-enric.balletbo@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
The System Control Processor System (SCPSYS) has several power management
related tasks in the system. This driver implements support to handle
the different power domains supported in order to meet high performance
and low power requirements.
Co-developed-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20201030113622.201188-3-enric.balletbo@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
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Merge tag 'ib-mfd-mediatek-v5.11' into HEAD
Immutable branch between MFD and MediaTek due for the v5.11 merge window
The SMI (Smart Multimedia Interface) Common is a bridge between the m4u
(Multimedia Memory Management Unit) and the Multimedia HW. This block is
needed to support different multimedia features, like display, video
decode, and camera. Also is needed to control the power domains of such
HW blocks.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20201030113622.201188-13-enric.balletbo@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Any record with a trailing newline (LOG_NEWLINE flag) cannot
be continued because the newline has been stripped and will
not be visible if the message is appended. This was already
handled correctly when committing in log_output() but was
not handled correctly when committing in log_store().
Fixes: f5f022e53b ("printk: reimplement log_cont using record extension")
Link: https://lore.kernel.org/r/20201126114836.14750-1-john.ogness@linutronix.de
Reported-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Tested-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
The System Control Processor System (SCPSYS) has several power management
related tasks in the system. Add the bindings to define the power
domains for the SCPSYS power controller.
Co-developed-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201030113622.201188-2-enric.balletbo@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Since tomoyo_memory_ok() will check for null pointer returned by
kzalloc() in tomoyo_assign_profile(), tomoyo_assign_namespace(),
tomoyo_get_name() and tomoyo_commit_ok(), then emit OOM warnings
if needed. And this is the expected behavior as informed by
Tetsuo Handa.
Let's add __GFP_NOWARN to kzalloc() in those related functions.
Besides, to achieve this goal, remove the null check for entry
right after kzalloc() in tomoyo_assign_namespace().
Reported-by: Hulk Robot <hulkci@huawei.com>
Suggested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
These writes to 0x162, 0x163 already appear earlier in the struct for
the 1920x1080 mode and do not need to be repeated.
Signed-off-by: Sameer Puri <purisame@spuri.io>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The variable err is being initialized with a value that is never read
and it is being updated later with a new value. The initialization is
redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
In order to setup its PCI component, the driver needs any node private
instance in order to get a reference to the PCI device and hand that
into edac_pci_create_generic_ctl(). For convenience, it uses the 0th
memory controller descriptor under the assumption that if any, the 0th
will be always present.
However, this assumption goes wrong when the 0th node doesn't have
memory and the driver doesn't initialize an instance for it:
EDAC amd64: F17h detected (node 0).
...
EDAC amd64: Node 0: No DIMMs detected.
But looking up node instances is not really needed - all one needs is
the pointer to the proper device which gets discovered during instance
init.
So stash that pointer into a variable and use it when setting up the
EDAC PCI component.
Clear that variable when the driver needs to unwind due to some
instances failing init to avoid any registration imbalance.
Cc: <stable@vger.kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20201122150815.13808-1-bp@alien8.de
redact XFRM SA secret in the netlink response to xfrm_get_sa()
or dumpall sa.
Enable lockdown, confidentiality mode, at boot or at run time.
e.g. when enabled:
cat /sys/kernel/security/lockdown
none integrity [confidentiality]
ip xfrm state
src 172.16.1.200 dst 172.16.1.100
proto esp spi 0x00000002 reqid 2 mode tunnel
replay-window 0
aead rfc4106(gcm(aes)) 0x0000000000000000000000000000000000000000 96
note: the aead secret is redacted.
Redacting secret is also a FIPS 140-2 requirement.
v1->v2
- add size checks before memset calls
v2->v3
- replace spaces with tabs for consistency
v3->v4
- use kernel lockdown instead of a /proc setting
v4->v5
- remove kconfig option
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This is supposed to return negative error codes but the type is bool so
it returns true instead.
Fixes: b47b79d8a2 ("[media] media: i2c: max2175: Add MAX2175 support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reserve memory from &_text to &_end. Otherwise if kernel address
was modified, the memory range of start_pfn to kernel_start_pfn
would be reserved. Then we could not use this range.
Signed-off-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/iommu/intel/iommu.c:5643:27: warning: variable 'last_pfn' set but not used [-Wunused-but-set-variable]
5643 | unsigned long start_pfn, last_pfn;
| ^~~~~~~~
This variable is never used, so remove it.
Fixes: 2a2b8eaa5b ("iommu: Handle freelists when using deferred flushing in iommu drivers")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20201127013308.1833610-1-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
To detect potential bugs in CAN protocol implementations (double removal of
receiver entries) a WARN() statement has been used if no matching list item was
found for removal.
The fault injection issued by syzkaller was able to create a situation where
the closing of a socket runs simultaneously to the notifier call chain for
removing the CAN network device in use.
This case is very unlikely in real life but it doesn't break anything.
Therefore we just replace the WARN() statement with pr_warn() to preserve the
notification for the CAN protocol development.
Reported-by: syzbot+381d06e0c8eaacb8706f@syzkaller.appspotmail.com
Reported-by: syzbot+d0ddd88c9a7432f041e6@syzkaller.appspotmail.com
Reported-by: syzbot+76d62d3b8162883c7d11@syzkaller.appspotmail.com
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/r/20201126192140.14350-1-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Add support for mcan bit timing and control mode according to bosch mcan IP
version 3.3.0. The mcan version read from the Core Release field of CREL
register would be 33. Accordingly the properties are to be set for mcan v3.3.0
Signed-off-by: Pankaj Sharma <pankj.sharma@samsung.com>
Link: https://lore.kernel.org/r/1606366302-5520-1-git-send-email-pankj.sharma@samsung.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
At lest the revision 3.3.0 of the bosch m_can IP core specifies that valid
register values for "Nominal Time segment after sample point (NTSEG2)" are from
1 to 127. As the hardware uses a value of one more than the programmed value,
mean tseg2_min is 2.
This patch fixes the tseg2_min value accordingly.
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Mario Huettel <mario.huettel@gmx.net>
Acked-by: Sriram Dash <sriram.dash@samsung.com>
Link: https://lore.kernel.org/r/20201124190751.3972238-1-mkl@pengutronix.de
Fixes: b03cfc5bb0 ("can: m_can: Enable M_CAN version dependent initialization")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
The threaded IRQ handler is used for the tcan4x5x driver only. The IRQ pin of
the tcan4x5x controller is active low, so better not use IRQF_TRIGGER_FALLING
when requesting the IRQ. As this can result in missing interrupts.
Further, if the device tree specified the interrupt as "IRQ_TYPE_LEVEL_LOW",
unloading and reloading of the driver results in the following error during
ifup:
| irq: type mismatch, failed to map hwirq-31 for gpio@20a8000!
| tcan4x5x spi1.1: m_can device registered (irq=0, version=32)
| tcan4x5x spi1.1 can2: TCAN4X5X successfully initialized.
| tcan4x5x spi1.1 can2: failed to request interrupt
This patch fixes the problem by removing the IRQF_TRIGGER_FALLING from the
request_threaded_irq().
Fixes: f524f829b7 ("can: m_can: Create a m_can platform framework")
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Sriram Dash <sriram.dash@samsung.com>
Cc: Pankaj Sharma <pankj.sharma@samsung.com>
Link: https://lore.kernel.org/r/20201127093548.509253-1-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
The "seg_num," line wasn't indented. All the arguments can fit nicely
on two lines.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
After commit 9cce844abf ("MIPS: CPU#0 is not hotpluggable"),
c->hotpluggable is 0 for CPU 0 and it will not generate a control
file in sysfs for this CPU:
[root@linux loongson]# cat /sys/devices/system/cpu/cpu0/online
cat: /sys/devices/system/cpu/cpu0/online: No such file or directory
[root@linux loongson]# echo 0 > /sys/devices/system/cpu/cpu0/online
bash: /sys/devices/system/cpu/cpu0/online: Permission denied
So no need to check CPU 0 in {loongson3,bmips,octeon}_cpu_disable(),
just remove them.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
kfree(dev) has been called inside put_device so anther
kfree would cause a use-after-free bug/
Fixes: 8286ae0330 ("MIPS: Add CDMM bus support")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Acked-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This patch provides the test application for DMA_MAP_BENCHMARK.
Before running the test application, we need to bind a device to dma_map_
benchmark driver. For example, unbind "xxx" from its original driver and
bind to dma_map_benchmark:
echo dma_map_benchmark > /sys/bus/platform/devices/xxx/driver_override
echo xxx > /sys/bus/platform/drivers/xxx/unbind
echo xxx > /sys/bus/platform/drivers/dma_map_benchmark/bind
Another example for PCI devices:
echo dma_map_benchmark > /sys/bus/pci/devices/0000:00:01.0/driver_override
echo 0000:00:01.0 > /sys/bus/pci/drivers/xxx/unbind
echo 0000:00:01.0 > /sys/bus/pci/drivers/dma_map_benchmark/bind
The below command will run 16 threads on numa node 0 for 10 seconds on
the device bound to dma_map_benchmark platform_driver or pci_driver:
./dma_map_benchmark -t 16 -s 10 -n 0
dma mapping benchmark: threads:16 seconds:10
average map latency(us):1.1 standard deviation:1.9
average unmap latency(us):0.5 standard deviation:0.8
Cc: Will Deacon <will@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Nowadays, there are increasing requirements to benchmark the performance
of dma_map and dma_unmap particually while the device is attached to an
IOMMU.
This patch enables the support. Users can run specified number of threads
to do dma_map_page and dma_unmap_page on a specific NUMA node with the
specified duration. Then dma_map_benchmark will calculate the average
latency for map and unmap.
A difficulity for this benchmark is that dma_map/unmap APIs must run on
a particular device. Each device might have different backend of IOMMU or
non-IOMMU.
So we use the driver_override to bind dma_map_benchmark to a particual
device by:
For platform devices:
echo dma_map_benchmark > /sys/bus/platform/devices/xxx/driver_override
echo xxx > /sys/bus/platform/drivers/xxx/unbind
echo xxx > /sys/bus/platform/drivers/dma_map_benchmark/bind
For PCI devices:
echo dma_map_benchmark > /sys/bus/pci/devices/0000:00:01.0/driver_override
echo 0000:00:01.0 > /sys/bus/pci/drivers/xxx/unbind
echo 0000:00:01.0 > /sys/bus/pci/drivers/dma_map_benchmark/bind
Cc: Will Deacon <will@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
[hch: folded in two fixes from Colin Ian King <colin.king@canonical.com>]
Signed-off-by: Christoph Hellwig <hch@lst.de>
When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
So far we have been using huge DMA windows to map all the RAM available.
The RAM is normally mapped to the VM address space contiguously, and
there is always a reasonable upper limit for possible future hot plugged
RAM which makes it easy to map all RAM via IOMMU.
Now there is persistent memory ("ibm,pmemory" in the FDT) which (unlike
normal RAM) can map anywhere in the VM space beyond the maximum RAM size
and since it can be used for DMA, it requires extending the huge window
up to MAX_PHYSMEM_BITS which requires hypervisor support for:
1. huge TCE tables;
2. multilevel TCE tables;
3. huge IOMMU pages.
Certain hypervisors cannot do either so the only option left is
restricting the huge DMA window to include only RAM and fallback to
the default DMA window for persistent memory.
This defines arch_dma_map_direct/etc to allow generic DMA code perform
additional checks on whether direct DMA is still possible.
This checks if the system has persistent memory. If it does not,
the DMA bypass mode is selected, i.e.
* dev->bus_dma_limit = 0
* dev->dma_ops_bypass = true <- this avoid calling dma_ops for mapping.
If there is such memory, this creates identity mapping only for RAM and
sets the dev->bus_dma_limit to let the generic code decide whether to
call into the direct DMA or the indirect DMA ops.
This should not change the existing behaviour when no persistent memory
as dev->dma_ops_bypass is expected to be set.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Christoph Hellwig <hch@lst.de>
At the moment we allow bypassing DMA ops only when we can do this for
the entire RAM. However there are configs with mixed type memory
where we could still allow bypassing IOMMU in most cases;
POWERPC with persistent memory is one example.
This adds an arch hook to determine where bypass can still work and
we invoke direct DMA API. The following patch checks the bus limit
on POWERPC to allow or disallow direct mapping.
This adds a ARCH_HAS_DMA_MAP_DIRECT config option to make the arch_xxxx
hooks no-op by default.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Provide a weak plat_get_fdt() in relocate.c in case some platform enable
USE_OF while plat_get_fdt() is useless.
1MB RELOCATION_TABLE_SIZE is small for Loongson64 because too many
instructions should be relocated. 2MB is enough in present.
Add KASLR support for Loongson64.
KASLR(kernel address space layout randomization)
To enable KASLR on Loongson64:
First, make loongson3_defconfig.
Then, enable CONFIG_RELOCATABLE and CONFIG_RANDOMIZE_BASE.
Finally, compile the kernel.
To test KASLR on Loongson64:
Start machine with KASLR kernel.
The first time:
# cat /proc/iomem
00200000-0effffff : System RAM
02f30000-03895e9f : Kernel code
03895ea0-03bc7fff : Kernel data
03e30000-04f43f7f : Kernel bss
The second time:
# cat /proc/iomem
00200000-0effffff : System RAM
022f0000-02c55e9f : Kernel code
02c55ea0-02f87fff : Kernel data
031f0000-04303f7f : Kernel bss
We see that code, data and bss sections become randomize.
Signed-off-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Apply_r_mips_26_rel() relocates instructions like j, jal and etc. These
instructions consist of 6bits function field and 26bits address field.
The value of target_addr as follows,
=================================================================
| high 4bits | low 28bits |
=================================================================
|the high 4bits of this PC | the low 26bits of instructions << 2|
=================================================================
Thus, loc_orig and log_new both need high 4bits rather than high 6bits.
Signed-off-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Stop video streaming when requested.
When s_stream is called to stop the video streaming, if/else condition calls
start_streaming function instead of the one for stopping it.
Fixes: 4361905962 ("media: imx214: Add imx214 camera sensor driver")
Signed-off-by: Daniel Gomez <daniel@qtec.com>
Signed-off-by: Ricardo Ribalda <ribalda@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The pumpkin board is made by Gossamer Engineering and is using
a MediaTek SoC. The board currently comes in two available version:
MT8516 SoC and MT8167 SoC.
The board provides the following IOs: eMMC, NAND, SD card, USB type-A,
Ethernet, Wi-Fi, Bluetooth, Audio (jack out, 2 PDM port, 1 analog in),
serial over USB, HDMI, DSI, CSI, and an expansion header.
The board can be powered by battery and/or via a USB Type-C port and
is using a PMIC MT6392.
The eMMC and NAND are sharing pins and cannot be used together.
This commit is adding the basic boot support for the Pumpkin MT8167
board.
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Link: https://lore.kernel.org/r/20201027194816.1227654-3-fparent@baylibre.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
The MT8167 SoC provides the following peripherals: GPIO, UART, USB2,
SPI, eMMC, SDIO, NAND, Flash, ADC, I2C, PWM, TImers, IR, Ethernet,
Audio (I2S, SPDIF, TDM, HDMI), HDMI, DSI, CSI, MDP (Multimedia Data
Path), Video encoding (H.264), Video Decoding (H.264, VP8).
The MT8167 is compatible with MT8516 but provides multimedia IPs to it.
This commit is just adding the basic dtsi file with the support of the
following IOs: GPIO, Clocks.
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Link: https://lore.kernel.org/r/20201027194816.1227654-2-fparent@baylibre.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
The driver references of_device_id table via of_match_device() so it
will be unused for !CONFIG_OF builds:
drivers/mfd/twl6030-irq.c:359:34: warning: ‘twl6030_of_match’ defined but not used [-Wunused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
