diff options
Diffstat (limited to 'arch/sh/include/asm/fixmap.h')
| -rw-r--r-- | arch/sh/include/asm/fixmap.h | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/arch/sh/include/asm/fixmap.h b/arch/sh/include/asm/fixmap.h index 721fcc4d5e9..bd7e79a1265 100644 --- a/arch/sh/include/asm/fixmap.h +++ b/arch/sh/include/asm/fixmap.h @@ -14,9 +14,9 @@ #define _ASM_FIXMAP_H #include <linux/kernel.h> +#include <linux/threads.h> #include <asm/page.h> #ifdef CONFIG_HIGHMEM -#include <linux/threads.h> #include <asm/kmap_types.h> #endif @@ -46,19 +46,38 @@ * fix-mapped? */ enum fixed_addresses { -#define FIX_N_COLOURS 16 + /* + * The FIX_CMAP entries are used by kmap_coherent() to get virtual + * addresses which are of a known color, and so their values are + * important. __fix_to_virt(FIX_CMAP_END - n) must give an address + * which is the same color as a page (n<<PAGE_SHIFT). + */ +#define FIX_N_COLOURS 8 FIX_CMAP_BEGIN, - FIX_CMAP_END = FIX_CMAP_BEGIN + FIX_N_COLOURS, - FIX_UNCACHED, + FIX_CMAP_END = FIX_CMAP_BEGIN + (FIX_N_COLOURS * NR_CPUS) - 1, + #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, + FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_TYPE_NR * NR_CPUS) - 1, #endif + +#ifdef CONFIG_IOREMAP_FIXED + /* + * FIX_IOREMAP entries are useful for mapping physical address + * space before ioremap() is useable, e.g. really early in boot + * before kmalloc() is working. + */ +#define FIX_N_IOREMAPS 32 + FIX_IOREMAP_BEGIN, + FIX_IOREMAP_END = FIX_IOREMAP_BEGIN + FIX_N_IOREMAPS - 1, +#endif + __end_of_fixed_addresses }; extern void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t flags); +extern void __clear_fixmap(enum fixed_addresses idx, pgprot_t flags); #define set_fixmap(idx, phys) \ __set_fixmap(idx, phys, PAGE_KERNEL) |