1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
87 lines
3 KiB
C
87 lines
3 KiB
C
/*
|
|
* include/asm-sh/cpu-sh3/cacheflush.h
|
|
*
|
|
* Copyright (C) 1999 Niibe Yutaka
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
#ifndef __ASM_CPU_SH3_CACHEFLUSH_H
|
|
#define __ASM_CPU_SH3_CACHEFLUSH_H
|
|
|
|
/*
|
|
* Cache flushing:
|
|
*
|
|
* - flush_cache_all() flushes entire cache
|
|
* - flush_cache_mm(mm) flushes the specified mm context's cache lines
|
|
* - flush_cache_page(mm, vmaddr, pfn) flushes a single page
|
|
* - flush_cache_range(vma, start, end) flushes a range of pages
|
|
*
|
|
* - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
|
|
* - flush_icache_range(start, end) flushes(invalidates) a range for icache
|
|
* - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
|
|
*
|
|
* Caches are indexed (effectively) by physical address on SH-3, so
|
|
* we don't need them.
|
|
*/
|
|
|
|
#if defined(CONFIG_SH7705_CACHE_32KB)
|
|
|
|
/* SH7705 is an SH3 processor with 32KB cache. This has alias issues like the
|
|
* SH4. Unlike the SH4 this is a unified cache so we need to do some work
|
|
* in mmap when 'exec'ing a new binary
|
|
*/
|
|
/* 32KB cache, 4kb PAGE sizes need to check bit 12 */
|
|
#define CACHE_ALIAS 0x00001000
|
|
|
|
struct page;
|
|
struct mm_struct;
|
|
struct vm_area_struct;
|
|
|
|
extern void flush_cache_all(void);
|
|
extern void flush_cache_mm(struct mm_struct *mm);
|
|
extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
|
|
unsigned long end);
|
|
extern void flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn);
|
|
extern void flush_dcache_page(struct page *pg);
|
|
extern void flush_icache_range(unsigned long start, unsigned long end);
|
|
extern void flush_icache_page(struct vm_area_struct *vma, struct page *page);
|
|
|
|
#define flush_dcache_mmap_lock(mapping) do { } while (0)
|
|
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
|
|
|
|
/* SH3 has unified cache so no special action needed here */
|
|
#define flush_cache_sigtramp(vaddr) do { } while (0)
|
|
#define flush_page_to_ram(page) do { } while (0)
|
|
#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
|
|
|
|
#define p3_cache_init() do { } while (0)
|
|
|
|
#define PG_mapped PG_arch_1
|
|
|
|
/* We provide our own get_unmapped_area to avoid cache alias issue */
|
|
#define HAVE_ARCH_UNMAPPED_AREA
|
|
|
|
#else
|
|
|
|
#define flush_cache_all() do { } while (0)
|
|
#define flush_cache_mm(mm) do { } while (0)
|
|
#define flush_cache_range(vma, start, end) do { } while (0)
|
|
#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
|
|
#define flush_dcache_page(page) do { } while (0)
|
|
#define flush_dcache_mmap_lock(mapping) do { } while (0)
|
|
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
|
|
#define flush_icache_range(start, end) do { } while (0)
|
|
#define flush_icache_page(vma,pg) do { } while (0)
|
|
#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
|
|
#define flush_cache_sigtramp(vaddr) do { } while (0)
|
|
|
|
#define p3_cache_init() do { } while (0)
|
|
|
|
#define HAVE_ARCH_UNMAPPED_AREA
|
|
|
|
#endif
|
|
|
|
#endif /* __ASM_CPU_SH3_CACHEFLUSH_H */
|
|
|