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cacheflush.h

/*
 * include/asm-sh/cpu-sh2/cacheflush.h
 *
 * Copyright (C) 2003 Paul Mundt
 *
 * 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_SH2_CACHEFLUSH_H
#define __ASM_CPU_SH2_CACHEFLUSH_H

/*
 * Cache flushing:
 *
 *  - flush_cache_all() flushes entire cache
 *  - flush_cache_mm(mm) flushes the specified mm context's cache lines
 *  - flush_cache_dup mm(mm) handles cache flushing when forking
 *  - 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-2, so
 *  we don't need them.
 */
#define flush_cache_all()                 do { } while (0)
#define flush_cache_mm(mm)                do { } while (0)
#define flush_cache_dup_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)

#endif /* __ASM_CPU_SH2_CACHEFLUSH_H */

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