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Diffstat (limited to 'include/asm-i386/highmem.h')
-rw-r--r-- | include/asm-i386/highmem.h | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/include/asm-i386/highmem.h b/include/asm-i386/highmem.h deleted file mode 100644 index 13cdcd66fff2..000000000000 --- a/include/asm-i386/highmem.h +++ /dev/null @@ -1,85 +0,0 @@ -/* - * highmem.h: virtual kernel memory mappings for high memory - * - * Used in CONFIG_HIGHMEM systems for memory pages which - * are not addressable by direct kernel virtual addresses. - * - * Copyright (C) 1999 Gerhard Wichert, Siemens AG - * Gerhard.Wichert@pdb.siemens.de - * - * - * Redesigned the x86 32-bit VM architecture to deal with - * up to 16 Terabyte physical memory. With current x86 CPUs - * we now support up to 64 Gigabytes physical RAM. - * - * Copyright (C) 1999 Ingo Molnar <mingo@redhat.com> - */ - -#ifndef _ASM_HIGHMEM_H -#define _ASM_HIGHMEM_H - -#ifdef __KERNEL__ - -#include <linux/interrupt.h> -#include <linux/threads.h> -#include <asm/kmap_types.h> -#include <asm/tlbflush.h> -#include <asm/paravirt.h> - -/* declarations for highmem.c */ -extern unsigned long highstart_pfn, highend_pfn; - -extern pte_t *kmap_pte; -extern pgprot_t kmap_prot; -extern pte_t *pkmap_page_table; - -/* - * Right now we initialize only a single pte table. It can be extended - * easily, subsequent pte tables have to be allocated in one physical - * chunk of RAM. - */ -#ifdef CONFIG_X86_PAE -#define LAST_PKMAP 512 -#else -#define LAST_PKMAP 1024 -#endif -/* - * Ordering is: - * - * FIXADDR_TOP - * fixed_addresses - * FIXADDR_START - * temp fixed addresses - * FIXADDR_BOOT_START - * Persistent kmap area - * PKMAP_BASE - * VMALLOC_END - * Vmalloc area - * VMALLOC_START - * high_memory - */ -#define PKMAP_BASE ( (FIXADDR_BOOT_START - PAGE_SIZE*(LAST_PKMAP + 1)) & PMD_MASK ) -#define LAST_PKMAP_MASK (LAST_PKMAP-1) -#define PKMAP_NR(virt) ((virt-PKMAP_BASE) >> PAGE_SHIFT) -#define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) - -extern void * FASTCALL(kmap_high(struct page *page)); -extern void FASTCALL(kunmap_high(struct page *page)); - -void *kmap(struct page *page); -void kunmap(struct page *page); -void *kmap_atomic_prot(struct page *page, enum km_type type, pgprot_t prot); -void *kmap_atomic(struct page *page, enum km_type type); -void kunmap_atomic(void *kvaddr, enum km_type type); -void *kmap_atomic_pfn(unsigned long pfn, enum km_type type); -struct page *kmap_atomic_to_page(void *ptr); - -#ifndef CONFIG_PARAVIRT -#define kmap_atomic_pte(page, type) kmap_atomic(page, type) -#endif - -#define flush_cache_kmaps() do { } while (0) - -#endif /* __KERNEL__ */ - -#endif /* _ASM_HIGHMEM_H */ |