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| author | Tejun Heo <tj@kernel.org> | 2009-07-04 07:13:18 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-07-04 07:13:18 +0900 |
| commit | c43768cbb7655ea5ff782ae250f6e2ef4297cf98 (patch) | |
| tree | 3982e41dde3eecaa3739a5d1a8ed18d04bd74f01 /arch/blackfin/include/asm/uaccess.h | |
| parent | 1a8dd307cc0a2119be4e578c517795464e6dabba (diff) | |
| parent | 746a99a5af60ee676afa2ba469ccd1373493c7e7 (diff) | |
| download | kernel_samsung_tuna-c43768cbb7655ea5ff782ae250f6e2ef4297cf98.zip kernel_samsung_tuna-c43768cbb7655ea5ff782ae250f6e2ef4297cf98.tar.gz kernel_samsung_tuna-c43768cbb7655ea5ff782ae250f6e2ef4297cf98.tar.bz2 | |
Merge branch 'master' into for-next
Pull linus#master to merge PER_CPU_DEF_ATTRIBUTES and alpha build fix
changes. As alpha in percpu tree uses 'weak' attribute instead of
inline assembly, there's no need for __used attribute.
Conflicts:
arch/alpha/include/asm/percpu.h
arch/mn10300/kernel/vmlinux.lds.S
include/linux/percpu-defs.h
Diffstat (limited to 'arch/blackfin/include/asm/uaccess.h')
| -rw-r--r-- | arch/blackfin/include/asm/uaccess.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/uaccess.h b/arch/blackfin/include/asm/uaccess.h index 8894e9f..2f469a1 100644 --- a/arch/blackfin/include/asm/uaccess.h +++ b/arch/blackfin/include/asm/uaccess.h @@ -265,4 +265,26 @@ __clear_user(void *to, unsigned long n) #define clear_user(to, n) __clear_user(to, n) +/* How to interpret these return values: + * CORE: can be accessed by core load or dma memcpy + * CORE_ONLY: can only be accessed by core load + * DMA: can only be accessed by dma memcpy + * IDMA: can only be accessed by interprocessor dma memcpy (BF561) + * ITEST: can be accessed by isram memcpy or dma memcpy + */ +enum { + BFIN_MEM_ACCESS_CORE = 0, + BFIN_MEM_ACCESS_CORE_ONLY, + BFIN_MEM_ACCESS_DMA, + BFIN_MEM_ACCESS_IDMA, + BFIN_MEM_ACCESS_ITEST, +}; +/** + * bfin_mem_access_type() - what kind of memory access is required + * @addr: the address to check + * @size: number of bytes needed + * @return: <0 is error, >=0 is BFIN_MEM_ACCESS_xxx enum (see above) + */ +int bfin_mem_access_type(unsigned long addr, unsigned long size); + #endif /* _BLACKFIN_UACCESS_H */ |