dma-mapping updates for 5.9
- make support for dma_ops optional - move more code out of line - add generic support for a dma_ops bypass mode - misc cleanups -----BEGIN PGP SIGNATURE----- iQI/BAABCgApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAl8oGscLHGhjaEBsc3Qu ZGUACgkQD55TZVIEUYNfEhAAmFwd6BBHGwAhXUchoIue5vdNnuY3GiBFRzUdz67W zRYYgZYiPjl+MwflRmwPcoWEnGzmweRa2s6OnyDostiCRauioa8BuQfGqJasf1yZ D36dFNVHGW0o6pRDUQkd688k/4A6szwuwpq83qi4e8X2I9QzAITHtW8izjfPM923 FlJzxEFggbB2TvwfUXOZhmpuG4Dog8S7VZ1Uz4QAg0Z/5FDqIKAAG2aZMqCXBbiX 01E8tr0AqU/jn2xpc8O+DJGFiYIRhqhyNxQbH6qz1Q3xGFSokcLYm3YqkqVOgpn1 DLs2UFDxWkly/F+wGnYtju7OD9VGPywzOcW125/LIsApYN5R/rYrtQzK41eq7Mp5 HY3tqgNTIMdnl4so7QXeU4Vxj+lUdPlI26NZGszcM5AVftdTX8KjGdS+0+PBza6i i7trwG7J5/DnwiBCvEKoul7Ul1psUMTSvYwINTXRqsU4mZXhhx/mwyXbtruELnkj 3agM98u6hoalLNjd2aueh+NjMZi1r+MchTrfRvTcxJ+yQ5BoR5kF+iz7eT/LtZ72 AqWwimsPGNkLHUa0TrqWql5tv90cdDkBZzWXVbixwxRfgynWYLE6jugeIy8hwjFf GjO5XKbBwnWPjdSzFsVMPeuNpmr7ZjVHHewy2Q/jWQAIOyeof0VztEl23LN5yUkx pc8= =90UK -----END PGP SIGNATURE----- Merge tag 'dma-mapping-5.9' of git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping updates from Christoph Hellwig: - make support for dma_ops optional - move more code out of line - add generic support for a dma_ops bypass mode - misc cleanups * tag 'dma-mapping-5.9' of git://git.infradead.org/users/hch/dma-mapping: dma-contiguous: cleanup dma_alloc_contiguous dma-debug: use named initializers for dir2name powerpc: use the generic dma_ops_bypass mode dma-mapping: add a dma_ops_bypass flag to struct device dma-mapping: make support for dma ops optional dma-mapping: inline the fast path dma-direct calls dma-mapping: move the remaining DMA API calls out of line
This commit is contained in:
Linus Torvalds
commit
2ed90dbbf7
26 changed files with 415 additions and 416 deletions
|
|
@ -525,6 +525,11 @@ struct dev_links_info {
|
|||
* sync_state() callback.
|
||||
* @dma_coherent: this particular device is dma coherent, even if the
|
||||
* architecture supports non-coherent devices.
|
||||
* @dma_ops_bypass: If set to %true then the dma_ops are bypassed for the
|
||||
* streaming DMA operations (->map_* / ->unmap_* / ->sync_*),
|
||||
* and optionall (if the coherent mask is large enough) also
|
||||
* for dma allocations. This flag is managed by the dma ops
|
||||
* instance from ->dma_supported.
|
||||
*
|
||||
* At the lowest level, every device in a Linux system is represented by an
|
||||
* instance of struct device. The device structure contains the information
|
||||
|
|
@ -574,8 +579,9 @@ struct device {
|
|||
#ifdef CONFIG_GENERIC_MSI_IRQ
|
||||
struct list_head msi_list;
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_DMA_OPS
|
||||
const struct dma_map_ops *dma_ops;
|
||||
#endif
|
||||
u64 *dma_mask; /* dma mask (if dma'able device) */
|
||||
u64 coherent_dma_mask;/* Like dma_mask, but for
|
||||
alloc_coherent mappings as
|
||||
|
|
@ -628,6 +634,9 @@ struct device {
|
|||
defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL)
|
||||
bool dma_coherent:1;
|
||||
#endif
|
||||
#ifdef CONFIG_DMA_OPS_BYPASS
|
||||
bool dma_ops_bypass : 1;
|
||||
#endif
|
||||
};
|
||||
|
||||
static inline struct device *kobj_to_dev(struct kobject *kobj)
|
||||
|
|
|
|||
|
|
@ -1,10 +1,16 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Internals of the DMA direct mapping implementation. Only for use by the
|
||||
* DMA mapping code and IOMMU drivers.
|
||||
*/
|
||||
#ifndef _LINUX_DMA_DIRECT_H
|
||||
#define _LINUX_DMA_DIRECT_H 1
|
||||
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <linux/dma-noncoherent.h>
|
||||
#include <linux/memblock.h> /* for min_low_pfn */
|
||||
#include <linux/mem_encrypt.h>
|
||||
#include <linux/swiotlb.h>
|
||||
|
||||
extern unsigned int zone_dma_bits;
|
||||
|
||||
|
|
@ -87,4 +93,102 @@ int dma_direct_mmap(struct device *dev, struct vm_area_struct *vma,
|
|||
unsigned long attrs);
|
||||
int dma_direct_supported(struct device *dev, u64 mask);
|
||||
bool dma_direct_need_sync(struct device *dev, dma_addr_t dma_addr);
|
||||
int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
|
||||
enum dma_data_direction dir, unsigned long attrs);
|
||||
dma_addr_t dma_direct_map_resource(struct device *dev, phys_addr_t paddr,
|
||||
size_t size, enum dma_data_direction dir, unsigned long attrs);
|
||||
size_t dma_direct_max_mapping_size(struct device *dev);
|
||||
|
||||
#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \
|
||||
defined(CONFIG_SWIOTLB)
|
||||
void dma_direct_sync_sg_for_device(struct device *dev, struct scatterlist *sgl,
|
||||
int nents, enum dma_data_direction dir);
|
||||
#else
|
||||
static inline void dma_direct_sync_sg_for_device(struct device *dev,
|
||||
struct scatterlist *sgl, int nents, enum dma_data_direction dir)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \
|
||||
defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL) || \
|
||||
defined(CONFIG_SWIOTLB)
|
||||
void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sgl,
|
||||
int nents, enum dma_data_direction dir, unsigned long attrs);
|
||||
void dma_direct_sync_sg_for_cpu(struct device *dev,
|
||||
struct scatterlist *sgl, int nents, enum dma_data_direction dir);
|
||||
#else
|
||||
static inline void dma_direct_unmap_sg(struct device *dev,
|
||||
struct scatterlist *sgl, int nents, enum dma_data_direction dir,
|
||||
unsigned long attrs)
|
||||
{
|
||||
}
|
||||
static inline void dma_direct_sync_sg_for_cpu(struct device *dev,
|
||||
struct scatterlist *sgl, int nents, enum dma_data_direction dir)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
static inline void dma_direct_sync_single_for_device(struct device *dev,
|
||||
dma_addr_t addr, size_t size, enum dma_data_direction dir)
|
||||
{
|
||||
phys_addr_t paddr = dma_to_phys(dev, addr);
|
||||
|
||||
if (unlikely(is_swiotlb_buffer(paddr)))
|
||||
swiotlb_tbl_sync_single(dev, paddr, size, dir, SYNC_FOR_DEVICE);
|
||||
|
||||
if (!dev_is_dma_coherent(dev))
|
||||
arch_sync_dma_for_device(paddr, size, dir);
|
||||
}
|
||||
|
||||
static inline void dma_direct_sync_single_for_cpu(struct device *dev,
|
||||
dma_addr_t addr, size_t size, enum dma_data_direction dir)
|
||||
{
|
||||
phys_addr_t paddr = dma_to_phys(dev, addr);
|
||||
|
||||
if (!dev_is_dma_coherent(dev)) {
|
||||
arch_sync_dma_for_cpu(paddr, size, dir);
|
||||
arch_sync_dma_for_cpu_all();
|
||||
}
|
||||
|
||||
if (unlikely(is_swiotlb_buffer(paddr)))
|
||||
swiotlb_tbl_sync_single(dev, paddr, size, dir, SYNC_FOR_CPU);
|
||||
}
|
||||
|
||||
static inline dma_addr_t dma_direct_map_page(struct device *dev,
|
||||
struct page *page, unsigned long offset, size_t size,
|
||||
enum dma_data_direction dir, unsigned long attrs)
|
||||
{
|
||||
phys_addr_t phys = page_to_phys(page) + offset;
|
||||
dma_addr_t dma_addr = phys_to_dma(dev, phys);
|
||||
|
||||
if (unlikely(swiotlb_force == SWIOTLB_FORCE))
|
||||
return swiotlb_map(dev, phys, size, dir, attrs);
|
||||
|
||||
if (unlikely(!dma_capable(dev, dma_addr, size, true))) {
|
||||
if (swiotlb_force != SWIOTLB_NO_FORCE)
|
||||
return swiotlb_map(dev, phys, size, dir, attrs);
|
||||
|
||||
dev_WARN_ONCE(dev, 1,
|
||||
"DMA addr %pad+%zu overflow (mask %llx, bus limit %llx).\n",
|
||||
&dma_addr, size, *dev->dma_mask, dev->bus_dma_limit);
|
||||
return DMA_MAPPING_ERROR;
|
||||
}
|
||||
|
||||
if (!dev_is_dma_coherent(dev) && !(attrs & DMA_ATTR_SKIP_CPU_SYNC))
|
||||
arch_sync_dma_for_device(phys, size, dir);
|
||||
return dma_addr;
|
||||
}
|
||||
|
||||
static inline void dma_direct_unmap_page(struct device *dev, dma_addr_t addr,
|
||||
size_t size, enum dma_data_direction dir, unsigned long attrs)
|
||||
{
|
||||
phys_addr_t phys = dma_to_phys(dev, addr);
|
||||
|
||||
if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
|
||||
dma_direct_sync_single_for_cpu(dev, addr, size, dir);
|
||||
|
||||
if (unlikely(is_swiotlb_buffer(phys)))
|
||||
swiotlb_tbl_unmap_single(dev, phys, size, size, dir, attrs);
|
||||
}
|
||||
#endif /* _LINUX_DMA_DIRECT_H */
|
||||
|
|
|
|||
|
|
@ -188,76 +188,10 @@ static inline int dma_mmap_from_global_coherent(struct vm_area_struct *vma,
|
|||
}
|
||||
#endif /* CONFIG_DMA_DECLARE_COHERENT */
|
||||
|
||||
static inline bool dma_is_direct(const struct dma_map_ops *ops)
|
||||
{
|
||||
return likely(!ops);
|
||||
}
|
||||
|
||||
/*
|
||||
* All the dma_direct_* declarations are here just for the indirect call bypass,
|
||||
* and must not be used directly drivers!
|
||||
*/
|
||||
dma_addr_t dma_direct_map_page(struct device *dev, struct page *page,
|
||||
unsigned long offset, size_t size, enum dma_data_direction dir,
|
||||
unsigned long attrs);
|
||||
int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
|
||||
enum dma_data_direction dir, unsigned long attrs);
|
||||
dma_addr_t dma_direct_map_resource(struct device *dev, phys_addr_t paddr,
|
||||
size_t size, enum dma_data_direction dir, unsigned long attrs);
|
||||
|
||||
#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \
|
||||
defined(CONFIG_SWIOTLB)
|
||||
void dma_direct_sync_single_for_device(struct device *dev,
|
||||
dma_addr_t addr, size_t size, enum dma_data_direction dir);
|
||||
void dma_direct_sync_sg_for_device(struct device *dev,
|
||||
struct scatterlist *sgl, int nents, enum dma_data_direction dir);
|
||||
#else
|
||||
static inline void dma_direct_sync_single_for_device(struct device *dev,
|
||||
dma_addr_t addr, size_t size, enum dma_data_direction dir)
|
||||
{
|
||||
}
|
||||
static inline void dma_direct_sync_sg_for_device(struct device *dev,
|
||||
struct scatterlist *sgl, int nents, enum dma_data_direction dir)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \
|
||||
defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL) || \
|
||||
defined(CONFIG_SWIOTLB)
|
||||
void dma_direct_unmap_page(struct device *dev, dma_addr_t addr,
|
||||
size_t size, enum dma_data_direction dir, unsigned long attrs);
|
||||
void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sgl,
|
||||
int nents, enum dma_data_direction dir, unsigned long attrs);
|
||||
void dma_direct_sync_single_for_cpu(struct device *dev,
|
||||
dma_addr_t addr, size_t size, enum dma_data_direction dir);
|
||||
void dma_direct_sync_sg_for_cpu(struct device *dev,
|
||||
struct scatterlist *sgl, int nents, enum dma_data_direction dir);
|
||||
#else
|
||||
static inline void dma_direct_unmap_page(struct device *dev, dma_addr_t addr,
|
||||
size_t size, enum dma_data_direction dir, unsigned long attrs)
|
||||
{
|
||||
}
|
||||
static inline void dma_direct_unmap_sg(struct device *dev,
|
||||
struct scatterlist *sgl, int nents, enum dma_data_direction dir,
|
||||
unsigned long attrs)
|
||||
{
|
||||
}
|
||||
static inline void dma_direct_sync_single_for_cpu(struct device *dev,
|
||||
dma_addr_t addr, size_t size, enum dma_data_direction dir)
|
||||
{
|
||||
}
|
||||
static inline void dma_direct_sync_sg_for_cpu(struct device *dev,
|
||||
struct scatterlist *sgl, int nents, enum dma_data_direction dir)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
size_t dma_direct_max_mapping_size(struct device *dev);
|
||||
|
||||
#ifdef CONFIG_HAS_DMA
|
||||
#include <asm/dma-mapping.h>
|
||||
|
||||
#ifdef CONFIG_DMA_OPS
|
||||
static inline const struct dma_map_ops *get_dma_ops(struct device *dev)
|
||||
{
|
||||
if (dev->dma_ops)
|
||||
|
|
@ -270,165 +204,16 @@ static inline void set_dma_ops(struct device *dev,
|
|||
{
|
||||
dev->dma_ops = dma_ops;
|
||||
}
|
||||
|
||||
static inline dma_addr_t dma_map_page_attrs(struct device *dev,
|
||||
struct page *page, size_t offset, size_t size,
|
||||
enum dma_data_direction dir, unsigned long attrs)
|
||||
#else /* CONFIG_DMA_OPS */
|
||||
static inline const struct dma_map_ops *get_dma_ops(struct device *dev)
|
||||
{
|
||||
const struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
dma_addr_t addr;
|
||||
|
||||
BUG_ON(!valid_dma_direction(dir));
|
||||
if (dma_is_direct(ops))
|
||||
addr = dma_direct_map_page(dev, page, offset, size, dir, attrs);
|
||||
else
|
||||
addr = ops->map_page(dev, page, offset, size, dir, attrs);
|
||||
debug_dma_map_page(dev, page, offset, size, dir, addr);
|
||||
|
||||
return addr;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static inline void dma_unmap_page_attrs(struct device *dev, dma_addr_t addr,
|
||||
size_t size, enum dma_data_direction dir, unsigned long attrs)
|
||||
static inline void set_dma_ops(struct device *dev,
|
||||
const struct dma_map_ops *dma_ops)
|
||||
{
|
||||
const struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
|
||||
BUG_ON(!valid_dma_direction(dir));
|
||||
if (dma_is_direct(ops))
|
||||
dma_direct_unmap_page(dev, addr, size, dir, attrs);
|
||||
else if (ops->unmap_page)
|
||||
ops->unmap_page(dev, addr, size, dir, attrs);
|
||||
debug_dma_unmap_page(dev, addr, size, dir);
|
||||
}
|
||||
|
||||
/*
|
||||
* dma_maps_sg_attrs returns 0 on error and > 0 on success.
|
||||
* It should never return a value < 0.
|
||||
*/
|
||||
static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
|
||||
int nents, enum dma_data_direction dir,
|
||||
unsigned long attrs)
|
||||
{
|
||||
const struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
int ents;
|
||||
|
||||
BUG_ON(!valid_dma_direction(dir));
|
||||
if (dma_is_direct(ops))
|
||||
ents = dma_direct_map_sg(dev, sg, nents, dir, attrs);
|
||||
else
|
||||
ents = ops->map_sg(dev, sg, nents, dir, attrs);
|
||||
BUG_ON(ents < 0);
|
||||
debug_dma_map_sg(dev, sg, nents, ents, dir);
|
||||
|
||||
return ents;
|
||||
}
|
||||
|
||||
static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,
|
||||
int nents, enum dma_data_direction dir,
|
||||
unsigned long attrs)
|
||||
{
|
||||
const struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
|
||||
BUG_ON(!valid_dma_direction(dir));
|
||||
debug_dma_unmap_sg(dev, sg, nents, dir);
|
||||
if (dma_is_direct(ops))
|
||||
dma_direct_unmap_sg(dev, sg, nents, dir, attrs);
|
||||
else if (ops->unmap_sg)
|
||||
ops->unmap_sg(dev, sg, nents, dir, attrs);
|
||||
}
|
||||
|
||||
static inline dma_addr_t dma_map_resource(struct device *dev,
|
||||
phys_addr_t phys_addr,
|
||||
size_t size,
|
||||
enum dma_data_direction dir,
|
||||
unsigned long attrs)
|
||||
{
|
||||
const struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
dma_addr_t addr = DMA_MAPPING_ERROR;
|
||||
|
||||
BUG_ON(!valid_dma_direction(dir));
|
||||
|
||||
/* Don't allow RAM to be mapped */
|
||||
if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr))))
|
||||
return DMA_MAPPING_ERROR;
|
||||
|
||||
if (dma_is_direct(ops))
|
||||
addr = dma_direct_map_resource(dev, phys_addr, size, dir, attrs);
|
||||
else if (ops->map_resource)
|
||||
addr = ops->map_resource(dev, phys_addr, size, dir, attrs);
|
||||
|
||||
debug_dma_map_resource(dev, phys_addr, size, dir, addr);
|
||||
return addr;
|
||||
}
|
||||
|
||||
static inline void dma_unmap_resource(struct device *dev, dma_addr_t addr,
|
||||
size_t size, enum dma_data_direction dir,
|
||||
unsigned long attrs)
|
||||
{
|
||||
const struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
|
||||
BUG_ON(!valid_dma_direction(dir));
|
||||
if (!dma_is_direct(ops) && ops->unmap_resource)
|
||||
ops->unmap_resource(dev, addr, size, dir, attrs);
|
||||
debug_dma_unmap_resource(dev, addr, size, dir);
|
||||
}
|
||||
|
||||
static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
|
||||
size_t size,
|
||||
enum dma_data_direction dir)
|
||||
{
|
||||
const struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
|
||||
BUG_ON(!valid_dma_direction(dir));
|
||||
if (dma_is_direct(ops))
|
||||
dma_direct_sync_single_for_cpu(dev, addr, size, dir);
|
||||
else if (ops->sync_single_for_cpu)
|
||||
ops->sync_single_for_cpu(dev, addr, size, dir);
|
||||
debug_dma_sync_single_for_cpu(dev, addr, size, dir);
|
||||
}
|
||||
|
||||
static inline void dma_sync_single_for_device(struct device *dev,
|
||||
dma_addr_t addr, size_t size,
|
||||
enum dma_data_direction dir)
|
||||
{
|
||||
const struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
|
||||
BUG_ON(!valid_dma_direction(dir));
|
||||
if (dma_is_direct(ops))
|
||||
dma_direct_sync_single_for_device(dev, addr, size, dir);
|
||||
else if (ops->sync_single_for_device)
|
||||
ops->sync_single_for_device(dev, addr, size, dir);
|
||||
debug_dma_sync_single_for_device(dev, addr, size, dir);
|
||||
}
|
||||
|
||||
static inline void
|
||||
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
|
||||
int nelems, enum dma_data_direction dir)
|
||||
{
|
||||
const struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
|
||||
BUG_ON(!valid_dma_direction(dir));
|
||||
if (dma_is_direct(ops))
|
||||
dma_direct_sync_sg_for_cpu(dev, sg, nelems, dir);
|
||||
else if (ops->sync_sg_for_cpu)
|
||||
ops->sync_sg_for_cpu(dev, sg, nelems, dir);
|
||||
debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir);
|
||||
}
|
||||
|
||||
static inline void
|
||||
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
|
||||
int nelems, enum dma_data_direction dir)
|
||||
{
|
||||
const struct dma_map_ops *ops = get_dma_ops(dev);
|
||||
|
||||
BUG_ON(!valid_dma_direction(dir));
|
||||
if (dma_is_direct(ops))
|
||||
dma_direct_sync_sg_for_device(dev, sg, nelems, dir);
|
||||
else if (ops->sync_sg_for_device)
|
||||
ops->sync_sg_for_device(dev, sg, nelems, dir);
|
||||
debug_dma_sync_sg_for_device(dev, sg, nelems, dir);
|
||||
|
||||
}
|
||||
#endif /* CONFIG_DMA_OPS */
|
||||
|
||||
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
|
||||
{
|
||||
|
|
@ -439,6 +224,28 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
|
|||
return 0;
|
||||
}
|
||||
|
||||
dma_addr_t dma_map_page_attrs(struct device *dev, struct page *page,
|
||||
size_t offset, size_t size, enum dma_data_direction dir,
|
||||
unsigned long attrs);
|
||||
void dma_unmap_page_attrs(struct device *dev, dma_addr_t addr, size_t size,
|
||||
enum dma_data_direction dir, unsigned long attrs);
|
||||
int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg, int nents,
|
||||
enum dma_data_direction dir, unsigned long attrs);
|
||||
void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,
|
||||
int nents, enum dma_data_direction dir,
|
||||
unsigned long attrs);
|
||||
dma_addr_t dma_map_resource(struct device *dev, phys_addr_t phys_addr,
|
||||
size_t size, enum dma_data_direction dir, unsigned long attrs);
|
||||
void dma_unmap_resource(struct device *dev, dma_addr_t addr, size_t size,
|
||||
enum dma_data_direction dir, unsigned long attrs);
|
||||
void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr, size_t size,
|
||||
enum dma_data_direction dir);
|
||||
void dma_sync_single_for_device(struct device *dev, dma_addr_t addr,
|
||||
size_t size, enum dma_data_direction dir);
|
||||
void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
|
||||
int nelems, enum dma_data_direction dir);
|
||||
void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
|
||||
int nelems, enum dma_data_direction dir);
|
||||
void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
|
||||
gfp_t flag, unsigned long attrs);
|
||||
void dma_free_attrs(struct device *dev, size_t size, void *cpu_addr,
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue