diff options
Diffstat (limited to 'arch/metag/include/asm/highmem.h')
-rw-r--r-- | arch/metag/include/asm/highmem.h | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/arch/metag/include/asm/highmem.h b/arch/metag/include/asm/highmem.h deleted file mode 100644 index 8b0dfd6..0000000 --- a/arch/metag/include/asm/highmem.h +++ /dev/null @@ -1,62 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_HIGHMEM_H -#define _ASM_HIGHMEM_H - -#include <asm/cacheflush.h> -#include <asm/kmap_types.h> -#include <asm/fixmap.h> - -/* - * 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. - */ -/* - * Ordering is (from lower to higher memory addresses): - * - * high_memory - * Persistent kmap area - * PKMAP_BASE - * fixed_addresses - * FIXADDR_START - * FIXADDR_TOP - * Vmalloc area - * VMALLOC_START - * VMALLOC_END - */ -#define PKMAP_BASE (FIXADDR_START - PMD_SIZE) -#define LAST_PKMAP PTRS_PER_PTE -#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)) - -#define kmap_prot PAGE_KERNEL - -static inline void flush_cache_kmaps(void) -{ - flush_cache_all(); -} - -/* declarations for highmem.c */ -extern unsigned long highstart_pfn, highend_pfn; - -extern pte_t *pkmap_page_table; - -extern void *kmap_high(struct page *page); -extern void kunmap_high(struct page *page); - -extern void kmap_init(void); - -/* - * The following functions are already defined by <linux/highmem.h> - * when CONFIG_HIGHMEM is not set. - */ -#ifdef CONFIG_HIGHMEM -extern void *kmap(struct page *page); -extern void kunmap(struct page *page); -extern void *kmap_atomic(struct page *page); -extern void __kunmap_atomic(void *kvaddr); -extern void *kmap_atomic_pfn(unsigned long pfn); -#endif - -#endif |