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dma-mapping: consolidate dma_{alloc,free}_{attrs,coherent} 

Since 2009 we have a nice asm-generic header implementing lots of DMA API
functions for architectures using struct dma_map_ops, but unfortunately
it's still missing a lot of APIs that all architectures still have to
duplicate.

This series consolidates the remaining functions, although we still need
arch opt outs for two of them as a few architectures have very
non-standard implementations.

This patch (of 5):

The coherent DMA allocator works the same over all architectures supporting
dma_map operations.

This patch consolidates them and converges the minor differences:

 - the debug_dma helpers are now called from all architectures, including
   those that were previously missing them
 - dma_alloc_from_coherent and dma_release_from_coherent are now always
   called from the generic alloc/free routines instead of the ops
   dma-mapping-common.h always includes dma-coherent.h to get the defintions
   for them, or the stubs if the architecture doesn't support this feature
 - checks for ->alloc / ->free presence are removed.  There is only one
   magic instead of dma_map_ops without them (mic_dma_ops) and that one
   is x86 only anyway.

Besides that only x86 needs special treatment to replace a default devices
if none is passed and tweak the gfp_flags.  An optional arch hook is provided
for that.

[linux@roeck-us.net: fix build]
[jcmvbkbc@gmail.com: fix xtensa]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2015-09-09 15:39:39 -07:00 коммит произвёл Linus Torvalds
Родитель fb6dd5fa41
Коммит 6894258eda
25 изменённых файлов: 70 добавлений и 569 удалений
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18
arch/alpha/include/asm/dma-mapping.h
Просмотреть файл

@ -12,24 +12,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp,
struct dma_attrs *attrs)
{
return get_dma_ops(dev)->alloc(dev, size, dma_handle, gfp, attrs);
}
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
get_dma_ops(dev)->free(dev, size, vaddr, dma_handle, attrs);
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return get_dma_ops(dev)->mapping_error(dev, dma_addr);

29
arch/arm/include/asm/dma-mapping.h
Просмотреть файл

@ -8,7 +8,6 @@
#include <linux/dma-attrs.h>
#include <linux/dma-debug.h>
#include <asm-generic/dma-coherent.h>
#include <asm/memory.h>
#include <xen/xen.h>
@ -209,21 +208,6 @@ extern int arm_dma_set_mask(struct device *dev, u64 dma_mask);
extern void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
gfp_t gfp, struct dma_attrs *attrs);
#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *cpu_addr;
BUG_ON(!ops);
cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
return cpu_addr;
}
/**
* arm_dma_free - free memory allocated by arm_dma_alloc
* @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
@ -241,19 +225,6 @@ static inline void *dma_alloc_attrs(struct device *dev, size_t size,
extern void arm_dma_free(struct device *dev, size_t size, void *cpu_addr,
dma_addr_t handle, struct dma_attrs *attrs);
#define dma_free_coherent(d, s, c, h) dma_free_attrs(d, s, c, h, NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!ops);
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
/**
* arm_dma_mmap - map a coherent DMA allocation into user space
* @dev: valid struct device pointer, or NULL for ISA and EISA-like devices

12
arch/arm/mm/dma-mapping.c
Просмотреть файл

@ -676,10 +676,6 @@ void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
gfp_t gfp, struct dma_attrs *attrs)
{
pgprot_t prot = __get_dma_pgprot(attrs, PAGE_KERNEL);
void *memory;
if (dma_alloc_from_coherent(dev, size, handle, &memory))
return memory;
return __dma_alloc(dev, size, handle, gfp, prot, false,
attrs, __builtin_return_address(0));
@ -688,11 +684,6 @@ void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
static void *arm_coherent_dma_alloc(struct device *dev, size_t size,
dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs)
{
void *memory;
if (dma_alloc_from_coherent(dev, size, handle, &memory))
return memory;
return __dma_alloc(dev, size, handle, gfp, PAGE_KERNEL, true,
attrs, __builtin_return_address(0));
}
@ -752,9 +743,6 @@ static void __arm_dma_free(struct device *dev, size_t size, void *cpu_addr,
struct page *page = pfn_to_page(dma_to_pfn(dev, handle));
bool want_vaddr = !dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, attrs);
if (dma_release_from_coherent(dev, get_order(size), cpu_addr))
return;
size = PAGE_ALIGN(size);
if (nommu()) {

33
arch/arm64/include/asm/dma-mapping.h
Просмотреть файл

@ -22,8 +22,6 @@
#include <linux/types.h>
#include <linux/vmalloc.h>
#include <asm-generic/dma-coherent.h>
#include <xen/xen.h>
#include <asm/xen/hypervisor.h>
@ -120,37 +118,6 @@ static inline void dma_mark_clean(void *addr, size_t size)
{
}
#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
#define dma_free_coherent(d, s, h, f) dma_free_attrs(d, s, h, f, NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flags,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *vaddr;
if (dma_alloc_from_coherent(dev, size, dma_handle, &vaddr))
return vaddr;
vaddr = ops->alloc(dev, size, dma_handle, flags, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, vaddr);
return vaddr;
}
static inline void dma_free_attrs(struct device *dev, size_t size,
void *vaddr, dma_addr_t dev_addr,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
if (dma_release_from_coherent(dev, get_order(size), vaddr))
return;
debug_dma_free_coherent(dev, size, vaddr, dev_addr);
ops->free(dev, size, vaddr, dev_addr, attrs);
}
/*
* There is no dma_cache_sync() implementation, so just return NULL here.
*/

26
arch/h8300/include/asm/dma-mapping.h
Просмотреть файл

@ -1,8 +1,6 @@
#ifndef _H8300_DMA_MAPPING_H
#define _H8300_DMA_MAPPING_H
#include <asm-generic/dma-coherent.h>
extern struct dma_map_ops h8300_dma_map_ops;
static inline struct dma_map_ops *get_dma_ops(struct device *dev)
@ -25,30 +23,6 @@ static inline int dma_set_mask(struct device *dev, u64 mask)
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *memory;
memory = ops->alloc(dev, size, dma_handle, flag, attrs);
return memory;
}
#define dma_free_coherent(d, s, c, h) dma_free_attrs(d, s, c, h, NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return 0;

33
arch/hexagon/include/asm/dma-mapping.h
Просмотреть файл

@ -70,37 +70,4 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
return (dma_addr == bad_dma_address);
}
#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
void *ret;
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!dma_ops);
ret = ops->alloc(dev, size, dma_handle, flag, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, ret);
return ret;
}
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
BUG_ON(!dma_ops);
dma_ops->free(dev, size, cpu_addr, dma_handle, attrs);
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
}
#endif

25
arch/ia64/include/asm/dma-mapping.h
Просмотреть файл

@ -23,31 +23,6 @@ extern void machvec_dma_sync_single(struct device *, dma_addr_t, size_t,
extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
enum dma_data_direction);
#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *daddr, gfp_t gfp,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = platform_dma_get_ops(dev);
void *caddr;
caddr = ops->alloc(dev, size, daddr, gfp, attrs);
debug_dma_alloc_coherent(dev, size, *daddr, caddr);
return caddr;
}
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *caddr, dma_addr_t daddr,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = platform_dma_get_ops(dev);
debug_dma_free_coherent(dev, size, caddr, daddr);
ops->free(dev, size, caddr, daddr, attrs);
}
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)

31
arch/microblaze/include/asm/dma-mapping.h
Просмотреть файл

@ -27,7 +27,6 @@
#include <linux/dma-debug.h>
#include <linux/dma-attrs.h>
#include <asm/io.h>
#include <asm-generic/dma-coherent.h>
#include <asm/cacheflush.h>
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
@ -102,36 +101,6 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *memory;
BUG_ON(!ops);
memory = ops->alloc(dev, size, dma_handle, flag, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
return memory;
}
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d, s, c, h, NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!ops);
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction)
{

8
arch/mips/cavium-octeon/dma-octeon.c
Просмотреть файл

@ -161,9 +161,6 @@ static void *octeon_dma_alloc_coherent(struct device *dev, size_t size,
{
void *ret;
if (dma_alloc_from_coherent(dev, size, dma_handle, &ret))
return ret;
/* ignore region specifiers */
gfp &= ~(__GFP_DMA | __GFP_DMA32 | __GFP_HIGHMEM);
@ -194,11 +191,6 @@ static void *octeon_dma_alloc_coherent(struct device *dev, size_t size,
static void octeon_dma_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle, struct dma_attrs *attrs)
{
int order = get_order(size);
if (dma_release_from_coherent(dev, order, vaddr))
return;
swiotlb_free_coherent(dev, size, vaddr, dma_handle);
}

31
arch/mips/include/asm/dma-mapping.h
Просмотреть файл

@ -4,7 +4,6 @@
#include <linux/scatterlist.h>
#include <asm/dma-coherence.h>
#include <asm/cache.h>
#include <asm-generic/dma-coherent.h>
#ifndef CONFIG_SGI_IP27 /* Kludge to fix 2.6.39 build for IP27 */
#include <dma-coherence.h>
@ -65,36 +64,6 @@ dma_set_mask(struct device *dev, u64 mask)
extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction);
#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp,
struct dma_attrs *attrs)
{
void *ret;
struct dma_map_ops *ops = get_dma_ops(dev);
ret = ops->alloc(dev, size, dma_handle, gfp, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, ret);
return ret;
}
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
ops->free(dev, size, vaddr, dma_handle, attrs);
debug_dma_free_coherent(dev, size, vaddr, dma_handle);
}
void *dma_alloc_noncoherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag);

8
arch/mips/loongson64/common/dma-swiotlb.c
Просмотреть файл

@ -14,9 +14,6 @@ static void *loongson_dma_alloc_coherent(struct device *dev, size_t size,
{
void *ret;
if (dma_alloc_from_coherent(dev, size, dma_handle, &ret))
return ret;
/* ignore region specifiers */
gfp &= ~(__GFP_DMA | __GFP_DMA32 | __GFP_HIGHMEM);
@ -46,11 +43,6 @@ static void *loongson_dma_alloc_coherent(struct device *dev, size_t size,
static void loongson_dma_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle, struct dma_attrs *attrs)
{
int order = get_order(size);
if (dma_release_from_coherent(dev, order, vaddr))
return;
swiotlb_free_coherent(dev, size, vaddr, dma_handle);
}

7
arch/mips/mm/dma-default.c
Просмотреть файл

@ -137,9 +137,6 @@ static void *mips_dma_alloc_coherent(struct device *dev, size_t size,
struct page *page = NULL;
unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT;
if (dma_alloc_from_coherent(dev, size, dma_handle, &ret))
return ret;
gfp = massage_gfp_flags(dev, gfp);
if (IS_ENABLED(CONFIG_DMA_CMA) && !(gfp & GFP_ATOMIC))
@ -176,13 +173,9 @@ static void mips_dma_free_coherent(struct device *dev, size_t size, void *vaddr,
dma_addr_t dma_handle, struct dma_attrs *attrs)
{
unsigned long addr = (unsigned long) vaddr;
int order = get_order(size);
unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT;
struct page *page = NULL;
if (dma_release_from_coherent(dev, order, vaddr))
return;
plat_unmap_dma_mem(dev, dma_handle, size, DMA_BIDIRECTIONAL);
if (!plat_device_is_coherent(dev) && !hw_coherentio)

10
arch/mips/netlogic/common/nlm-dma.c
Просмотреть файл

@ -47,11 +47,6 @@ static char *nlm_swiotlb;
static void *nlm_dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs)
{
void *ret;
if (dma_alloc_from_coherent(dev, size, dma_handle, &ret))
return ret;
/* ignore region specifiers */
gfp &= ~(__GFP_DMA | __GFP_DMA32 | __GFP_HIGHMEM);
@ -69,11 +64,6 @@ static void *nlm_dma_alloc_coherent(struct device *dev, size_t size,
static void nlm_dma_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle, struct dma_attrs *attrs)
{
int order = get_order(size);
if (dma_release_from_coherent(dev, order, vaddr))
return;
swiotlb_free_coherent(dev, size, vaddr, dma_handle);
}

30
arch/openrisc/include/asm/dma-mapping.h
Просмотреть файл

@ -23,7 +23,6 @@
*/
#include <linux/dma-debug.h>
#include <asm-generic/dma-coherent.h>
#include <linux/kmemcheck.h>
#include <linux/dma-mapping.h>
@ -38,35 +37,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *memory;
memory = ops->alloc(dev, size, dma_handle, gfp, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
return memory;
}
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp)
{

33
arch/powerpc/include/asm/dma-mapping.h
Просмотреть файл

@ -137,39 +137,6 @@ extern int dma_set_mask(struct device *dev, u64 dma_mask);
extern int __dma_set_mask(struct device *dev, u64 dma_mask);
extern u64 __dma_get_required_mask(struct device *dev);
#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
void *cpu_addr;
BUG_ON(!dma_ops);
cpu_addr = dma_ops->alloc(dev, size, dma_handle, flag, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
return cpu_addr;
}
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
BUG_ON(!dma_ops);
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
dma_ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);

31
arch/s390/include/asm/dma-mapping.h
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@ -56,35 +56,4 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
return dma_addr == DMA_ERROR_CODE;
}
#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flags,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *cpu_addr;
BUG_ON(!ops);
cpu_addr = ops->alloc(dev, size, dma_handle, flags, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
return cpu_addr;
}
#define dma_free_coherent(d, s, c, h) dma_free_attrs(d, s, c, h, NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!ops);
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
#endif /* _ASM_S390_DMA_MAPPING_H */

37
arch/sh/include/asm/dma-mapping.h
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@ -9,7 +9,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return dma_ops;
}
#include <asm-generic/dma-coherent.h>
#include <asm-generic/dma-mapping-common.h>
static inline int dma_supported(struct device *dev, u64 mask)
@ -53,42 +52,6 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
return dma_addr == 0;
}
#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *memory;
if (dma_alloc_from_coherent(dev, size, dma_handle, &memory))
return memory;
if (!ops->alloc)
return NULL;
memory = ops->alloc(dev, size, dma_handle, gfp, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
return memory;
}
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
if (dma_release_from_coherent(dev, get_order(size), vaddr))
return;
debug_dma_free_coherent(dev, size, vaddr, dma_handle);
if (ops->free)
ops->free(dev, size, vaddr, dma_handle, attrs);
}
/* arch/sh/mm/consistent.c */
extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t flag,

26
arch/sparc/include/asm/dma-mapping.h
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@ -41,32 +41,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *cpu_addr;
cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
return cpu_addr;
}
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
debug_dma_mapping_error(dev, dma_addr);

27
arch/tile/include/asm/dma-mapping.h
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@ -116,34 +116,7 @@ dma_set_mask(struct device *dev, u64 mask)
return 0;
}
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
void *cpu_addr;
cpu_addr = dma_ops->alloc(dev, size, dma_handle, flag, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
return cpu_addr;
}
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
dma_ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
#define dma_free_coherent(d, s, v, h) dma_free_attrs(d, s, v, h, NULL)
#define dma_free_noncoherent(d, s, v, h) dma_free_attrs(d, s, v, h, NULL)
/*

24
arch/unicore32/include/asm/dma-mapping.h
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@ -18,8 +18,6 @@
#include <linux/scatterlist.h>
#include <linux/swiotlb.h>
#include <asm-generic/dma-coherent.h>
#include <asm/memory.h>
#include <asm/cacheflush.h>
@ -82,28 +80,6 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask)
return 0;
}
#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
return dma_ops->alloc(dev, size, dma_handle, flag, attrs);
}
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
dma_ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)

16
arch/x86/include/asm/dma-mapping.h
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@ -12,7 +12,6 @@
#include <linux/dma-attrs.h>
#include <asm/io.h>
#include <asm/swiotlb.h>
#include <asm-generic/dma-coherent.h>
#include <linux/dma-contiguous.h>
#ifdef CONFIG_ISA
@ -41,6 +40,9 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#endif
}
bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp);
#define arch_dma_alloc_attrs arch_dma_alloc_attrs
#include <asm-generic/dma-mapping-common.h>
/* Make sure we keep the same behaviour */
@ -125,16 +127,4 @@ static inline gfp_t dma_alloc_coherent_gfp_flags(struct device *dev, gfp_t gfp)
return gfp;
}
#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
void *
dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t gfp, struct dma_attrs *attrs);
#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
void dma_free_attrs(struct device *dev, size_t size,
void *vaddr, dma_addr_t bus,
struct dma_attrs *attrs);
#endif

49
arch/x86/kernel/pci-dma.c
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@ -140,50 +140,19 @@ void dma_generic_free_coherent(struct device *dev, size_t size, void *vaddr,
free_pages((unsigned long)vaddr, get_order(size));
}
void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t gfp, struct dma_attrs *attrs)
bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *memory;
*gfp = dma_alloc_coherent_gfp_flags(*dev, *gfp);
*gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
if (!*dev)
*dev = &x86_dma_fallback_dev;
if (!is_device_dma_capable(*dev))
return false;
return true;
if (dma_alloc_from_coherent(dev, size, dma_handle, &memory))
return memory;
if (!dev)
dev = &x86_dma_fallback_dev;
if (!is_device_dma_capable(dev))
return NULL;
if (!ops->alloc)
return NULL;
memory = ops->alloc(dev, size, dma_handle,
dma_alloc_coherent_gfp_flags(dev, gfp), attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
return memory;
}
EXPORT_SYMBOL(dma_alloc_attrs);
void dma_free_attrs(struct device *dev, size_t size,
void *vaddr, dma_addr_t bus,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
WARN_ON(irqs_disabled()); /* for portability */
if (dma_release_from_coherent(dev, get_order(size), vaddr))
return;
debug_dma_free_coherent(dev, size, vaddr, bus);
if (ops->free)
ops->free(dev, size, vaddr, bus, attrs);
}
EXPORT_SYMBOL(dma_free_attrs);
EXPORT_SYMBOL(arch_dma_alloc_attrs);
/*
* See <Documentation/x86/x86_64/boot-options.txt> for the iommu kernel

31
arch/xtensa/include/asm/dma-mapping.h
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@ -34,37 +34,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
#define dma_free_noncoherent(d, s, v, h) dma_free_attrs(d, s, v, h, NULL)
#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
#define dma_free_coherent(d, s, c, h) dma_free_attrs(d, s, c, h, NULL)
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp,
struct dma_attrs *attrs)
{
void *ret;
struct dma_map_ops *ops = get_dma_ops(dev);
if (dma_alloc_from_coherent(dev, size, dma_handle, &ret))
return ret;
ret = ops->alloc(dev, size, dma_handle, gfp, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, ret);
return ret;
}
static inline void dma_free_attrs(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
if (dma_release_from_coherent(dev, get_order(size), vaddr))
return;
ops->free(dev, size, vaddr, dma_handle, attrs);
debug_dma_free_coherent(dev, size, vaddr, dma_handle);
}
static inline int
dma_mapping_error(struct device *dev, dma_addr_t dma_addr)

6
drivers/xen/swiotlb-xen.c
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@ -311,9 +311,6 @@ xen_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
*/
flags &= ~(__GFP_DMA | __GFP_HIGHMEM);
if (dma_alloc_from_coherent(hwdev, size, dma_handle, &ret))
return ret;
/* On ARM this function returns an ioremap'ped virtual address for
* which virt_to_phys doesn't return the corresponding physical
* address. In fact on ARM virt_to_phys only works for kernel direct
@ -356,9 +353,6 @@ xen_swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
phys_addr_t phys;
u64 dma_mask = DMA_BIT_MASK(32);
if (dma_release_from_coherent(hwdev, order, vaddr))
return;
if (hwdev && hwdev->coherent_dma_mask)
dma_mask = hwdev->coherent_dma_mask;

58
include/asm-generic/dma-mapping-common.h
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@ -6,6 +6,7 @@
#include <linux/scatterlist.h>
#include <linux/dma-debug.h>
#include <linux/dma-attrs.h>
#include <asm-generic/dma-coherent.h>
static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr,
size_t size,
@ -237,4 +238,61 @@ dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt, void *cpu_addr,
#define dma_get_sgtable(d, t, v, h, s) dma_get_sgtable_attrs(d, t, v, h, s, NULL)
#ifndef arch_dma_alloc_attrs
#define arch_dma_alloc_attrs(dev, flag) (true)
#endif
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
void *cpu_addr;
BUG_ON(!ops);
if (dma_alloc_from_coherent(dev, size, dma_handle, &cpu_addr))
return cpu_addr;
if (!arch_dma_alloc_attrs(&dev, &flag))
return NULL;
if (!ops->alloc)
return NULL;
cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs);
debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
return cpu_addr;
}
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
struct dma_map_ops *ops = get_dma_ops(dev);
BUG_ON(!ops);
WARN_ON(irqs_disabled());
if (dma_release_from_coherent(dev, get_order(size), cpu_addr))
return;
if (!ops->free)
return;
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
ops->free(dev, size, cpu_addr, dma_handle, attrs);
}
static inline void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
return dma_alloc_attrs(dev, size, dma_handle, flag, NULL);
}
static inline void dma_free_coherent(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle)
{
return dma_free_attrs(dev, size, cpu_addr, dma_handle, NULL);
}
#endif