1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Copyright (C) 2015 Synopsys, Inc. (www.synopsys.com) 4 */ 5 6#ifndef _ASM_HIGHMEM_H 7#define _ASM_HIGHMEM_H 8 9#ifdef CONFIG_HIGHMEM 10 11#include <uapi/asm/page.h> 12#include <asm/kmap_types.h> 13 14/* start after vmalloc area */ 15#define FIXMAP_BASE (PAGE_OFFSET - FIXMAP_SIZE - PKMAP_SIZE) 16#define FIXMAP_SIZE PGDIR_SIZE /* only 1 PGD worth */ 17#define KM_TYPE_NR ((FIXMAP_SIZE >> PAGE_SHIFT)/NR_CPUS) 18#define FIXMAP_ADDR(nr) (FIXMAP_BASE + ((nr) << PAGE_SHIFT)) 19 20/* start after fixmap area */ 21#define PKMAP_BASE (FIXMAP_BASE + FIXMAP_SIZE) 22#define PKMAP_SIZE PGDIR_SIZE 23#define LAST_PKMAP (PKMAP_SIZE >> PAGE_SHIFT) 24#define LAST_PKMAP_MASK (LAST_PKMAP - 1) 25#define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) 26#define PKMAP_NR(virt) (((virt) - PKMAP_BASE) >> PAGE_SHIFT) 27 28#include <asm/cacheflush.h> 29 30extern void kmap_init(void); 31 32static inline void flush_cache_kmaps(void) 33{ 34 flush_cache_all(); 35} 36 37#endif 38 39#endif 40