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| author | Paul Mundt <lethal@linux-sh.org> | 2007-07-24 06:28:26 +0200 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2007-07-24 06:28:26 +0200 |
| commit | 8cf1a74305688c85fc8d23ab7432a0c447ee6413 (patch) | |
| tree | d43af5f2515db35ef6a705e5929780f91d34e898 /include/asm-sh | |
| parent | Linux 2.6.23-rc1 (diff) | |
| download | linux-8cf1a74305688c85fc8d23ab7432a0c447ee6413.tar.xz linux-8cf1a74305688c85fc8d23ab7432a0c447ee6413.zip | |
sh: Add kmap_coherent()/kunmap_coherent() interface for SH-4.
This wires up kmap_coherent() and kunmap_coherent() on SH-4, and
moves away from the p3map_mutex and reserved P3 space, opting to
use fixmaps for colouring instead.
The copy_user_page()/clear_user_page() implementations are moved
to this, which fixes the nasty blowups with spinlock debugging
as a result of having some of these calls nested under the page
table lock.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh')
| -rw-r--r-- | include/asm-sh/fixmap.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/asm-sh/fixmap.h b/include/asm-sh/fixmap.h index 458e9fa59545..8a566177ad96 100644 --- a/include/asm-sh/fixmap.h +++ b/include/asm-sh/fixmap.h @@ -46,6 +46,9 @@ * fix-mapped? */ enum fixed_addresses { +#define FIX_N_COLOURS 16 + FIX_CMAP_BEGIN, + FIX_CMAP_END = FIX_CMAP_BEGIN + FIX_N_COLOURS, #ifdef CONFIG_HIGHMEM FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */ FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1, @@ -53,8 +56,8 @@ enum fixed_addresses { __end_of_fixed_addresses }; -extern void __set_fixmap (enum fixed_addresses idx, - unsigned long phys, pgprot_t flags); +extern void __set_fixmap(enum fixed_addresses idx, + unsigned long phys, pgprot_t flags); #define set_fixmap(idx, phys) \ __set_fixmap(idx, phys, PAGE_KERNEL) @@ -106,5 +109,4 @@ static inline unsigned long virt_to_fix(const unsigned long vaddr) BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START); return __virt_to_fix(vaddr); } - #endif |