| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Copyright (C) 2015 Synopsys, Inc. (www.synopsys.com) |
| */ |
| |
| #ifndef _ASM_HIGHMEM_H |
| #define _ASM_HIGHMEM_H |
| |
| #ifdef CONFIG_HIGHMEM |
| |
| #include <uapi/asm/page.h> |
| #include <asm/kmap_types.h> |
| |
| /* 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)) |
| |
| /* 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) |
| |
| #include <asm/cacheflush.h> |
| |
| extern void kmap_init(void); |
| |
| static inline void flush_cache_kmaps(void) |
| { |
| flush_cache_all(); |
| } |
| |
| #endif |
| |
| #endif |
