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dma-mapping: cosolidate dma_mapping_error 

Currently there are three valid implementations of dma_mapping_error:

 (1) call ->mapping_error
 (2) check for a hardcoded error code
 (3) always return 0

This patch provides a common implementation that calls ->mapping_error
if present, then checks for DMA_ERROR_CODE if defined or otherwise
returns 0.

[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: 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 15:39:46 -07:00 committed by Linus Torvalds
parent 1e8937526e
commit efa21e432c
18 changed files with 19 additions and 146 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/alpha/include/asm/dma-mapping.h
View File

@ -12,11 +12,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return get_dma_ops(dev)->mapping_error(dev, dma_addr);
}
static inline int dma_supported(struct device *dev, u64 mask)
{
return get_dma_ops(dev)->dma_supported(dev, mask);

9
arch/arm/include/asm/dma-mapping.h
View File

@ -172,15 +172,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
static inline void dma_mark_clean(void *addr, size_t size) { }
/*
* DMA errors are defined by all-bits-set in the DMA address.
*/
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
debug_dma_mapping_error(dev, dma_addr);
return dma_addr == DMA_ERROR_CODE;
}
extern int dma_supported(struct device *dev, u64 mask);
extern int arm_dma_set_mask(struct device *dev, u64 dma_mask);

7
arch/arm64/include/asm/dma-mapping.h
View File

@ -84,13 +84,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr)
return (phys_addr_t)dev_addr;
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dev_addr)
{
struct dma_map_ops *ops = get_dma_ops(dev);
debug_dma_mapping_error(dev, dev_addr);
return ops->mapping_error(dev, dev_addr);
}
static inline int dma_supported(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);

5
arch/h8300/include/asm/dma-mapping.h
View File

@ -20,9 +20,4 @@ static inline int dma_set_mask(struct device *dev, u64 mask)
return 0;
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return 0;
}
#endif

11
arch/hexagon/include/asm/dma-mapping.h
View File

@ -31,6 +31,7 @@
struct device;
extern int bad_dma_address;
#define DMA_ERROR_CODE bad_dma_address
extern struct dma_map_ops *dma_ops;
@ -57,14 +58,4 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
return addr + size - 1 <= *dev->dma_mask;
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
if (dma_ops->mapping_error)
return dma_ops->mapping_error(dev, dma_addr);
return (dma_addr == bad_dma_address);
}
#endif

7
arch/ia64/include/asm/dma-mapping.h
View File

@ -27,13 +27,6 @@ extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
#include <asm-generic/dma-mapping-common.h>
static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr)
{
struct dma_map_ops *ops = platform_dma_get_ops(dev);
debug_dma_mapping_error(dev, daddr);
return ops->mapping_error(dev, daddr);
}
static inline int dma_supported(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = platform_dma_get_ops(dev);

11
arch/microblaze/include/asm/dma-mapping.h
View File

@ -87,17 +87,6 @@ static inline void __dma_sync(unsigned long paddr,
}
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
struct dma_map_ops *ops = get_dma_ops(dev);
debug_dma_mapping_error(dev, dma_addr);
if (ops->mapping_error)
return ops->mapping_error(dev, dma_addr);
return (dma_addr == DMA_ERROR_CODE);
}
static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction)
{

8
arch/mips/include/asm/dma-mapping.h
View File

@ -37,14 +37,6 @@ static inline int dma_supported(struct device *dev, u64 mask)
return ops->dma_supported(dev, mask);
}
static inline int dma_mapping_error(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);
debug_dma_mapping_error(dev, mask);
return ops->mapping_error(dev, mask);
}
static inline int
dma_set_mask(struct device *dev, u64 mask)
{

5
arch/openrisc/include/asm/dma-mapping.h
View File

@ -43,11 +43,6 @@ static inline int dma_supported(struct device *dev, u64 dma_mask)
return dma_mask == DMA_BIT_MASK(32);
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return 0;
}
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
{
if (!dev->dma_mask || !dma_supported(dev, dma_mask))

17
arch/powerpc/include/asm/dma-mapping.h
View File

@ -18,7 +18,9 @@
#include <asm/io.h>
#include <asm/swiotlb.h>
#ifdef CONFIG_PPC64
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
#endif
/* Some dma direct funcs must be visible for use in other dma_ops */
extern void *__dma_direct_alloc_coherent(struct device *dev, size_t size,
@ -137,21 +139,6 @@ 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);
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
debug_dma_mapping_error(dev, dma_addr);
if (dma_ops->mapping_error)
return dma_ops->mapping_error(dev, dma_addr);
#ifdef CONFIG_PPC64
return (dma_addr == DMA_ERROR_CODE);
#else
return 0;
#endif
}
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
#ifdef CONFIG_SWIOTLB

10
arch/s390/include/asm/dma-mapping.h
View File

@ -43,14 +43,4 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
return addr + size - 1 <= *dev->dma_mask;
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
debug_dma_mapping_error(dev, dma_addr);
if (dma_ops->mapping_error)
return dma_ops->mapping_error(dev, dma_addr);
return dma_addr == DMA_ERROR_CODE;
}
#endif /* _ASM_S390_DMA_MAPPING_H */

13
arch/sh/include/asm/dma-mapping.h
View File

@ -9,6 +9,8 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return dma_ops;
}
#define DMA_ERROR_CODE 0
#include <asm-generic/dma-mapping-common.h>
static inline int dma_supported(struct device *dev, u64 mask)
@ -38,17 +40,6 @@ static inline int dma_set_mask(struct device *dev, u64 mask)
void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction dir);
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
struct dma_map_ops *ops = get_dma_ops(dev);
debug_dma_mapping_error(dev, dma_addr);
if (ops->mapping_error)
return ops->mapping_error(dev, dma_addr);
return dma_addr == 0;
}
/* 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,

6
arch/sparc/include/asm/dma-mapping.h
View File

@ -38,12 +38,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
debug_dma_mapping_error(dev, dma_addr);
return (dma_addr == DMA_ERROR_CODE);
}
static inline int dma_set_mask(struct device *dev, u64 mask)
{
#ifdef CONFIG_PCI

7
arch/tile/include/asm/dma-mapping.h
View File

@ -74,13 +74,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
return addr + size - 1 <= *dev->dma_mask;
}
static inline int
dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
debug_dma_mapping_error(dev, dma_addr);
return get_dma_ops(dev)->mapping_error(dev, dma_addr);
}
static inline int
dma_supported(struct device *dev, u64 mask)
{

10
arch/unicore32/include/asm/dma-mapping.h
View File

@ -38,16 +38,6 @@ static inline int dma_supported(struct device *dev, u64 mask)
return dma_ops->dma_supported(dev, mask);
}
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
if (dma_ops->mapping_error)
return dma_ops->mapping_error(dev, dma_addr);
return 0;
}
#include <asm-generic/dma-mapping-common.h>
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)

11
arch/x86/include/asm/dma-mapping.h
View File

@ -45,17 +45,6 @@ bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp);
#include <asm-generic/dma-mapping-common.h>
/* Make sure we keep the same behaviour */
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
struct dma_map_ops *ops = get_dma_ops(dev);
debug_dma_mapping_error(dev, dma_addr);
if (ops->mapping_error)
return ops->mapping_error(dev, dma_addr);
return (dma_addr == DMA_ERROR_CODE);
}
extern int dma_supported(struct device *hwdev, u64 mask);
extern int dma_set_mask(struct device *dev, u64 mask);

9
arch/xtensa/include/asm/dma-mapping.h
View File

@ -32,15 +32,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
static inline int
dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
struct dma_map_ops *ops = get_dma_ops(dev);
debug_dma_mapping_error(dev, dma_addr);
return ops->mapping_error(dev, dma_addr);
}
static inline int
dma_supported(struct device *dev, u64 mask)
{

14
include/asm-generic/dma-mapping-common.h
View File

@ -313,4 +313,18 @@ static inline void dma_free_noncoherent(struct device *dev, size_t size,
dma_free_attrs(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);
if (get_dma_ops(dev)->mapping_error)
return get_dma_ops(dev)->mapping_error(dev, dma_addr);
#ifdef DMA_ERROR_CODE
return dma_addr == DMA_ERROR_CODE;
#else
return 0;
#endif
}
#endif