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| author | Franck Bui-Huu <vagabon.xyz@gmail.com> | 2006-10-19 13:20:00 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2006-11-30 01:14:41 +0000 |
| commit | 620a4802be8ee7989b1b6684b7198ebae02af854 (patch) | |
| tree | 4ded5391f23ab02cddcd9d40c3017340c9af027d /include/asm-mips/page.h | |
| parent | 99e3b942c62f42c8d5added63305e12372b06daf (diff) | |
| download | blackbird-op-linux-620a4802be8ee7989b1b6684b7198ebae02af854.tar.gz blackbird-op-linux-620a4802be8ee7989b1b6684b7198ebae02af854.zip | |
[MIPS] Make __pa() aware of XKPHYS/CKSEG0 address mix for 64 bit kernels
During early boot mem init, some configs couldn't use __pa() to
convert virtual into physical addresses. Specially for 64 bit
kernel cases when CONFIG_BUILD_ELF64=n. This patch make __pa()
work for _all_ configs and thus make CPHYSADDR() useless.
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips/page.h')
| -rw-r--r-- | include/asm-mips/page.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h index edb33a14ae9e..c3b13dedf21a 100644 --- a/include/asm-mips/page.h +++ b/include/asm-mips/page.h @@ -136,8 +136,13 @@ typedef struct { unsigned long pgprot; } pgprot_t; /* to align the pointer to the (next) page boundary */ #define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK) -#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET) -#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) +#if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64) +#define __pa_page_offset(x) ((unsigned long)(x) < CKSEG0 ? PAGE_OFFSET : CKSEG0) +#else +#define __pa_page_offset(x) PAGE_OFFSET +#endif +#define __pa(x) ((unsigned long)(x) - __pa_page_offset(x)) +#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET)) #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) |
