dma-mapping: consolidate dma_set_mask

Almost everyone implements dma_set_mask the same way, although some time
that's hidden in ->set_dma_mask methods.

This patch consolidates those into a common implementation that either
calls ->set_dma_mask if present or otherwise uses the default
implementation.  Some architectures used to only call ->set_dma_mask
after the initial checks, and those instance have been fixed to do the
full work.  h8300 implemented dma_set_mask bogusly as a no-ops and has
been fixed.

Unfortunately some architectures overload unrelated semantics like changing
the dma_ops into it so we still need to allow for an architecture override
for now.

[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 15:39:53 -07:00 committed by Linus Torvalds
parent ee196371d5
commit 452e06af1f
24 changed files with 28 additions and 169 deletions

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_set_mask(struct device *dev, u64 mask)
{
return get_dma_ops(dev)->set_dma_mask(dev, mask);
}
#define dma_cache_sync(dev, va, size, dir) ((void)0)
#endif /* _ALPHA_DMA_MAPPING_H */

View file

@ -166,15 +166,6 @@ static int alpha_noop_supported(struct device *dev, u64 mask)
return mask < 0x00ffffffUL ? 0 : 1;
}
static int alpha_noop_set_mask(struct device *dev, u64 mask)
{
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
struct dma_map_ops alpha_noop_ops = {
.alloc = alpha_noop_alloc_coherent,
.free = alpha_noop_free_coherent,
@ -182,7 +173,6 @@ struct dma_map_ops alpha_noop_ops = {
.map_sg = alpha_noop_map_sg,
.mapping_error = alpha_noop_mapping_error,
.dma_supported = alpha_noop_supported,
.set_dma_mask = alpha_noop_set_mask,
};
struct dma_map_ops *dma_ops = &alpha_noop_ops;

View file

@ -939,16 +939,6 @@ static int alpha_pci_mapping_error(struct device *dev, dma_addr_t dma_addr)
return dma_addr == 0;
}
static int alpha_pci_set_mask(struct device *dev, u64 mask)
{
if (!dev->dma_mask ||
!pci_dma_supported(alpha_gendev_to_pci(dev), mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
struct dma_map_ops alpha_pci_ops = {
.alloc = alpha_pci_alloc_coherent,
.free = alpha_pci_free_coherent,
@ -958,7 +948,6 @@ struct dma_map_ops alpha_pci_ops = {
.unmap_sg = alpha_pci_unmap_sg,
.mapping_error = alpha_pci_mapping_error,
.dma_supported = alpha_pci_supported,
.set_dma_mask = alpha_pci_set_mask,
};
struct dma_map_ops *dma_ops = &alpha_pci_ops;

View file

@ -48,11 +48,6 @@ extern int dma_supported(struct device *dev, u64 mask);
*/
#include <asm-generic/dma-mapping-common.h>
static inline int dma_set_mask(struct device *dev, u64 mask)
{
return get_dma_ops(dev)->set_dma_mask(dev, mask);
}
#ifdef __arch_page_to_dma
#error Please update to __arch_pfn_to_dma
#endif

View file

@ -84,15 +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_set_mask(struct device *dev, u64 mask)
{
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
if (!dev->dma_mask)

View file

@ -10,9 +10,4 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
static inline int dma_set_mask(struct device *dev, u64 mask)
{
return 0;
}
#endif

View file

@ -45,7 +45,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#define HAVE_ARCH_DMA_SUPPORTED 1
extern int dma_supported(struct device *dev, u64 mask);
extern int dma_set_mask(struct device *dev, u64 mask);
extern int dma_is_consistent(struct device *dev, dma_addr_t dma_handle);
extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction);

View file

@ -44,17 +44,6 @@ int dma_supported(struct device *dev, u64 mask)
}
EXPORT_SYMBOL(dma_supported);
int dma_set_mask(struct device *dev, u64 mask)
{
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
EXPORT_SYMBOL(dma_set_mask);
static struct gen_pool *coherent_pool;

View file

@ -27,15 +27,6 @@ extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
#include <asm-generic/dma-mapping-common.h>
static inline int
dma_set_mask (struct device *dev, u64 mask)
{
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
if (!dev->dma_mask)

View file

@ -46,20 +46,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);
if (unlikely(ops == NULL))
return -EIO;
if (ops->set_dma_mask)
return ops->set_dma_mask(dev, dma_mask);
if (!dev->dma_mask || !dma_supported(dev, dma_mask))
return -EIO;
*dev->dma_mask = dma_mask;
return 0;
}
static inline void __dma_sync(unsigned long paddr,
size_t size, enum dma_data_direction direction)
{

View file

@ -31,22 +31,6 @@ static inline void dma_mark_clean(void *addr, size_t size) {}
#include <asm-generic/dma-mapping-common.h>
static inline int
dma_set_mask(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);
if(!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
if (ops->set_dma_mask)
return ops->set_dma_mask(dev, mask);
*dev->dma_mask = mask;
return 0;
}
extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction);

View file

@ -85,6 +85,9 @@ static void loongson_dma_sync_sg_for_device(struct device *dev,
static int loongson_dma_set_mask(struct device *dev, u64 mask)
{
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
if (mask > DMA_BIT_MASK(loongson_sysconf.dma_mask_bits)) {
*dev->dma_mask = DMA_BIT_MASK(loongson_sysconf.dma_mask_bits);
return -EIO;

View file

@ -44,13 +44,4 @@ static inline int dma_supported(struct device *dev, u64 dma_mask)
#include <asm-generic/dma-mapping-common.h>
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
{
if (!dev->dma_mask || !dma_supported(dev, dma_mask))
return -EIO;
*dev->dma_mask = dma_mask;
return 0;
}
#endif /* __ASM_OPENRISC_DMA_MAPPING_H */

View file

@ -122,9 +122,11 @@ static inline void set_dma_offset(struct device *dev, dma_addr_t off)
/* this will be removed soon */
#define flush_write_buffers()
#define HAVE_ARCH_DMA_SET_MASK 1
extern int dma_set_mask(struct device *dev, u64 dma_mask);
#include <asm-generic/dma-mapping-common.h>
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);

View file

@ -18,8 +18,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &s390_dma_ops;
}
extern int dma_set_mask(struct device *dev, u64 mask);
static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction)
{

View file

@ -262,16 +262,6 @@ out:
spin_unlock_irqrestore(&zdev->iommu_bitmap_lock, flags);
}
int dma_set_mask(struct device *dev, u64 mask)
{
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
EXPORT_SYMBOL_GPL(dma_set_mask);
static dma_addr_t s390_dma_map_pages(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction direction,

View file

@ -13,20 +13,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
static inline int dma_set_mask(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
if (ops->set_dma_mask)
return ops->set_dma_mask(dev, mask);
*dev->dma_mask = mask;
return 0;
}
void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction dir);

View file

@ -37,7 +37,7 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return dma_ops;
}
#include <asm-generic/dma-mapping-common.h>
#define HAVE_ARCH_DMA_SET_MASK 1
static inline int dma_set_mask(struct device *dev, u64 mask)
{
@ -52,4 +52,6 @@ static inline int dma_set_mask(struct device *dev, u64 mask)
return -EINVAL;
}
#include <asm-generic/dma-mapping-common.h>
#endif

View file

@ -59,8 +59,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
static inline void dma_mark_clean(void *addr, size_t size) {}
#include <asm-generic/dma-mapping-common.h>
static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops)
{
dev->archdata.dma_ops = ops;
@ -74,6 +72,10 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
return addr + size - 1 <= *dev->dma_mask;
}
#define HAVE_ARCH_DMA_SET_MASK 1
#include <asm-generic/dma-mapping-common.h>
static inline int
dma_set_mask(struct device *dev, u64 mask)
{

View file

@ -50,16 +50,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
static inline void dma_mark_clean(void *addr, size_t size) {}
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
{
if (!dev->dma_mask || !dma_supported(dev, dma_mask))
return -EIO;
*dev->dma_mask = dma_mask;
return 0;
}
static inline void dma_cache_sync(struct device *dev, void *vaddr,
size_t size, enum dma_data_direction direction)
{

View file

@ -48,8 +48,6 @@ extern int dma_supported(struct device *hwdev, u64 mask);
#include <asm-generic/dma-mapping-common.h>
extern int dma_set_mask(struct device *dev, u64 mask);
extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t flag,
struct dma_attrs *attrs);

View file

@ -58,17 +58,6 @@ EXPORT_SYMBOL(x86_dma_fallback_dev);
/* Number of entries preallocated for DMA-API debugging */
#define PREALLOC_DMA_DEBUG_ENTRIES 65536
int dma_set_mask(struct device *dev, u64 mask)
{
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
EXPORT_SYMBOL(dma_set_mask);
void __init pci_iommu_alloc(void)
{
struct iommu_table_entry *p;

View file

@ -32,17 +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_set_mask(struct device *dev, u64 mask)
{
if(!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction);

View file

@ -340,4 +340,19 @@ static inline int dma_supported(struct device *dev, u64 mask)
}
#endif
#ifndef HAVE_ARCH_DMA_SET_MASK
static inline int dma_set_mask(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);
if (ops->set_dma_mask)
return ops->set_dma_mask(dev, mask);
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
#endif
#endif