linux/arch/csky/include/asm/highmem.h
Guo Ren 6607aa6f6b csky: Fixup compile error
: error: C++ style comments are not allowed in ISO C90
 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
 ^
error: (this will be reported only once per input file)

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
2021-02-27 22:04:14 +08:00

45 lines
1.1 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_CSKY_HIGHMEM_H
#define __ASM_CSKY_HIGHMEM_H
#ifdef __KERNEL__
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/uaccess.h>
#include <asm/kmap_size.h>
#include <asm/cache.h>
/* undef for production */
#define HIGHMEM_DEBUG 1
/* declarations for highmem.c */
extern unsigned long highstart_pfn, highend_pfn;
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.
*/
#define LAST_PKMAP 1024
#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 ARCH_HAS_KMAP_FLUSH_TLB
extern void kmap_flush_tlb(unsigned long addr);
#define flush_cache_kmaps() do {} while (0)
#define arch_kmap_local_post_map(vaddr, pteval) kmap_flush_tlb(vaddr)
#define arch_kmap_local_post_unmap(vaddr) kmap_flush_tlb(vaddr)
extern void kmap_init(void);
#endif /* __KERNEL__ */
#endif /* __ASM_CSKY_HIGHMEM_H */