diff options
Diffstat (limited to 'arch/mips/include/asm/fixmap.h')
| -rw-r--r-- | arch/mips/include/asm/fixmap.h | 48 |
1 files changed, 6 insertions, 42 deletions
diff --git a/arch/mips/include/asm/fixmap.h b/arch/mips/include/asm/fixmap.h index 9cc8522a394..6842ffafd1e 100644 --- a/arch/mips/include/asm/fixmap.h +++ b/arch/mips/include/asm/fixmap.h @@ -14,6 +14,7 @@ #define _ASM_FIXMAP_H #include <asm/page.h> +#include <spaces.h> #ifdef CONFIG_HIGHMEM #include <linux/threads.h> #include <asm/kmap_types.h> @@ -47,11 +48,7 @@ enum fixed_addresses { #define FIX_N_COLOURS 8 FIX_CMAP_BEGIN, -#ifdef CONFIG_MIPS_MT_SMTC - FIX_CMAP_END = FIX_CMAP_BEGIN + (FIX_N_COLOURS * NR_CPUS), -#else - FIX_CMAP_END = FIX_CMAP_BEGIN + FIX_N_COLOURS, -#endif + FIX_CMAP_END = FIX_CMAP_BEGIN + (FIX_N_COLOURS * 2), #ifdef CONFIG_HIGHMEM /* reserved pte's for temporary kernel mappings */ FIX_KMAP_BEGIN = FIX_CMAP_END + 1, @@ -67,52 +64,19 @@ enum fixed_addresses { * the start of the fixmap, and leave one page empty * at the top of mem.. */ -#if defined(CONFIG_CPU_TX39XX) || defined(CONFIG_CPU_TX49XX) -#define FIXADDR_TOP ((unsigned long)(long)(int)(0xff000000 - 0x20000)) -#else -#define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000) -#endif #define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) #define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) -#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) -#define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT) - -extern void __this_fixmap_does_not_exist(void); - -/* - * 'index to address' translation. If anyone tries to use the idx - * directly without tranlation, we catch the bug with a NULL-deference - * kernel oops. Illegal ranges of incoming indices are caught too. - */ -static inline unsigned long fix_to_virt(const unsigned int idx) -{ - /* - * this branch gets completely eliminated after inlining, - * except when someone tries to use fixaddr indices in an - * illegal way. (such as mixing up address types or using - * out-of-range indices). - * - * If it doesn't get removed, the linker will complain - * loudly with a reasonably clear error message.. - */ - if (idx >= __end_of_fixed_addresses) - __this_fixmap_does_not_exist(); - - return __fix_to_virt(idx); -} +#include <asm-generic/fixmap.h> -static inline unsigned long virt_to_fix(const unsigned long vaddr) -{ - BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START); - return __virt_to_fix(vaddr); -} +#define kmap_get_fixmap_pte(vaddr) \ + pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr)), (vaddr)) /* * Called from pgtable_init() */ extern void fixrange_init(unsigned long start, unsigned long end, - pgd_t *pgd_base); + pgd_t *pgd_base); #endif |