diff options
Diffstat (limited to 'arch/arc/include/asm/highmem.h')
| -rw-r--r-- | arch/arc/include/asm/highmem.h | 44 |
1 files changed, 20 insertions, 24 deletions
diff --git a/arch/arc/include/asm/highmem.h b/arch/arc/include/asm/highmem.h index 1af00accb37f..a6b8e2c352c4 100644 --- a/arch/arc/include/asm/highmem.h +++ b/arch/arc/include/asm/highmem.h @@ -9,49 +9,45 @@ #ifdef CONFIG_HIGHMEM #include <uapi/asm/page.h> -#include <asm/kmap_types.h> +#include <asm/kmap_size.h> + +#define FIXMAP_SIZE PGDIR_SIZE +#define PKMAP_SIZE PGDIR_SIZE /* start after vmalloc area */ #define FIXMAP_BASE (PAGE_OFFSET - FIXMAP_SIZE - PKMAP_SIZE) -#define FIXMAP_SIZE PGDIR_SIZE /* only 1 PGD worth */ -#define KM_TYPE_NR ((FIXMAP_SIZE >> PAGE_SHIFT)/NR_CPUS) -#define FIXMAP_ADDR(nr) (FIXMAP_BASE + ((nr) << PAGE_SHIFT)) + +#define FIX_KMAP_SLOTS (KM_MAX_IDX * NR_CPUS) +#define FIX_KMAP_BEGIN (0UL) +#define FIX_KMAP_END ((FIX_KMAP_BEGIN + FIX_KMAP_SLOTS) - 1) + +#define FIXADDR_TOP (FIXMAP_BASE + (FIX_KMAP_END << PAGE_SHIFT)) + +/* + * This should be converted to the asm-generic version, but of course this + * is needlessly different from all other architectures. Sigh - tglx + */ +#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) +#define __virt_to_fix(x) (((FIXADDR_TOP - ((x) & PAGE_MASK))) >> PAGE_SHIFT) /* start after fixmap area */ #define PKMAP_BASE (FIXMAP_BASE + FIXMAP_SIZE) -#define PKMAP_SIZE PGDIR_SIZE #define LAST_PKMAP (PKMAP_SIZE >> PAGE_SHIFT) #define LAST_PKMAP_MASK (LAST_PKMAP - 1) #define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) #define PKMAP_NR(virt) (((virt) - PKMAP_BASE) >> PAGE_SHIFT) -#define kmap_prot PAGE_KERNEL - - #include <asm/cacheflush.h> -extern void *kmap(struct page *page); -extern void *kmap_high(struct page *page); -extern void *kmap_atomic(struct page *page); -extern void __kunmap_atomic(void *kvaddr); -extern void kunmap_high(struct page *page); - extern void kmap_init(void); +#define arch_kmap_local_post_unmap(vaddr) \ + local_flush_tlb_kernel_range(vaddr, vaddr + PAGE_SIZE) + static inline void flush_cache_kmaps(void) { flush_cache_all(); } - -static inline void kunmap(struct page *page) -{ - BUG_ON(in_interrupt()); - if (!PageHighMem(page)) - return; - kunmap_high(page); -} - - #endif #endif |