1/* MN10300 Cache flushing
  2 *
  3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
  4 * Written by David Howells (dhowells@redhat.com)
  5 *
  6 * This program is free software; you can redistribute it and/or
  7 * modify it under the terms of the GNU General Public Licence
  8 * as published by the Free Software Foundation; either version
  9 * 2 of the Licence, or (at your option) any later version.
 10 */
 11#ifndef _ASM_CACHEFLUSH_H
 12#define _ASM_CACHEFLUSH_H
 13
 14#ifndef __ASSEMBLY__
 15
 16/* Keep includes the same across arches.  */
 17#include <linux/mm.h>
 18
 19/*
 20 * Primitive routines
 21 */
 22#ifdef CONFIG_MN10300_CACHE_ENABLED
 23extern void mn10300_local_icache_inv(void);
 24extern void mn10300_local_icache_inv_page(unsigned long start);
 25extern void mn10300_local_icache_inv_range(unsigned long start, unsigned long end);
 26extern void mn10300_local_icache_inv_range2(unsigned long start, unsigned long size);
 27extern void mn10300_local_dcache_inv(void);
 28extern void mn10300_local_dcache_inv_page(unsigned long start);
 29extern void mn10300_local_dcache_inv_range(unsigned long start, unsigned long end);
 30extern void mn10300_local_dcache_inv_range2(unsigned long start, unsigned long size);
 31extern void mn10300_icache_inv(void);
 32extern void mn10300_icache_inv_page(unsigned long start);
 33extern void mn10300_icache_inv_range(unsigned long start, unsigned long end);
 34extern void mn10300_icache_inv_range2(unsigned long start, unsigned long size);
 35extern void mn10300_dcache_inv(void);
 36extern void mn10300_dcache_inv_page(unsigned long start);
 37extern void mn10300_dcache_inv_range(unsigned long start, unsigned long end);
 38extern void mn10300_dcache_inv_range2(unsigned long start, unsigned long size);
 39#ifdef CONFIG_MN10300_CACHE_WBACK
 40extern void mn10300_local_dcache_flush(void);
 41extern void mn10300_local_dcache_flush_page(unsigned long start);
 42extern void mn10300_local_dcache_flush_range(unsigned long start, unsigned long end);
 43extern void mn10300_local_dcache_flush_range2(unsigned long start, unsigned long size);
 44extern void mn10300_local_dcache_flush_inv(void);
 45extern void mn10300_local_dcache_flush_inv_page(unsigned long start);
 46extern void mn10300_local_dcache_flush_inv_range(unsigned long start, unsigned long end);
 47extern void mn10300_local_dcache_flush_inv_range2(unsigned long start, unsigned long size);
 48extern void mn10300_dcache_flush(void);
 49extern void mn10300_dcache_flush_page(unsigned long start);
 50extern void mn10300_dcache_flush_range(unsigned long start, unsigned long end);
 51extern void mn10300_dcache_flush_range2(unsigned long start, unsigned long size);
 52extern void mn10300_dcache_flush_inv(void);
 53extern void mn10300_dcache_flush_inv_page(unsigned long start);
 54extern void mn10300_dcache_flush_inv_range(unsigned long start, unsigned long end);
 55extern void mn10300_dcache_flush_inv_range2(unsigned long start, unsigned long size);
 56#else
 57#define mn10300_local_dcache_flush()			do {} while (0)
 58#define mn10300_local_dcache_flush_page(start)		do {} while (0)
 59#define mn10300_local_dcache_flush_range(start, end)	do {} while (0)
 60#define mn10300_local_dcache_flush_range2(start, size)	do {} while (0)
 61#define mn10300_local_dcache_flush_inv() \
 62		mn10300_local_dcache_inv()
 63#define mn10300_local_dcache_flush_inv_page(start) \
 64		mn10300_local_dcache_inv_page(start)
 65#define mn10300_local_dcache_flush_inv_range(start, end) \
 66		mn10300_local_dcache_inv_range(start, end)
 67#define mn10300_local_dcache_flush_inv_range2(start, size) \
 68		mn10300_local_dcache_inv_range2(start, size)
 69#define mn10300_dcache_flush()				do {} while (0)
 70#define mn10300_dcache_flush_page(start)		do {} while (0)
 71#define mn10300_dcache_flush_range(start, end)		do {} while (0)
 72#define mn10300_dcache_flush_range2(start, size)	do {} while (0)
 73#define mn10300_dcache_flush_inv()			mn10300_dcache_inv()
 74#define mn10300_dcache_flush_inv_page(start) \
 75	mn10300_dcache_inv_page((start))
 76#define mn10300_dcache_flush_inv_range(start, end) \
 77	mn10300_dcache_inv_range((start), (end))
 78#define mn10300_dcache_flush_inv_range2(start, size) \
 79	mn10300_dcache_inv_range2((start), (size))
 80#endif /* CONFIG_MN10300_CACHE_WBACK */
 81#else
 82#define mn10300_local_icache_inv()			do {} while (0)
 83#define mn10300_local_icache_inv_page(start)		do {} while (0)
 84#define mn10300_local_icache_inv_range(start, end)	do {} while (0)
 85#define mn10300_local_icache_inv_range2(start, size)	do {} while (0)
 86#define mn10300_local_dcache_inv()			do {} while (0)
 87#define mn10300_local_dcache_inv_page(start)		do {} while (0)
 88#define mn10300_local_dcache_inv_range(start, end)	do {} while (0)
 89#define mn10300_local_dcache_inv_range2(start, size)	do {} while (0)
 90#define mn10300_local_dcache_flush()			do {} while (0)
 91#define mn10300_local_dcache_flush_inv_page(start)	do {} while (0)
 92#define mn10300_local_dcache_flush_inv()		do {} while (0)
 93#define mn10300_local_dcache_flush_inv_range(start, end)do {} while (0)
 94#define mn10300_local_dcache_flush_inv_range2(start, size) do {} while (0)
 95#define mn10300_local_dcache_flush_page(start)		do {} while (0)
 96#define mn10300_local_dcache_flush_range(start, end)	do {} while (0)
 97#define mn10300_local_dcache_flush_range2(start, size)	do {} while (0)
 98#define mn10300_icache_inv()				do {} while (0)
 99#define mn10300_icache_inv_page(start)			do {} while (0)
100#define mn10300_icache_inv_range(start, end)		do {} while (0)
101#define mn10300_icache_inv_range2(start, size)		do {} while (0)
102#define mn10300_dcache_inv()				do {} while (0)
103#define mn10300_dcache_inv_page(start)			do {} while (0)
104#define mn10300_dcache_inv_range(start, end)		do {} while (0)
105#define mn10300_dcache_inv_range2(start, size)		do {} while (0)
106#define mn10300_dcache_flush()				do {} while (0)
107#define mn10300_dcache_flush_inv_page(start)		do {} while (0)
108#define mn10300_dcache_flush_inv()			do {} while (0)
109#define mn10300_dcache_flush_inv_range(start, end)	do {} while (0)
110#define mn10300_dcache_flush_inv_range2(start, size)	do {} while (0)
111#define mn10300_dcache_flush_page(start)		do {} while (0)
112#define mn10300_dcache_flush_range(start, end)		do {} while (0)
113#define mn10300_dcache_flush_range2(start, size)	do {} while (0)
114#endif /* CONFIG_MN10300_CACHE_ENABLED */
115
116/*
117 * Virtually-indexed cache management (our cache is physically indexed)
118 */
119#define flush_cache_all()			do {} while (0)
120#define flush_cache_mm(mm)			do {} while (0)
121#define flush_cache_dup_mm(mm)			do {} while (0)
122#define flush_cache_range(mm, start, end)	do {} while (0)
123#define flush_cache_page(vma, vmaddr, pfn)	do {} while (0)
124#define flush_cache_vmap(start, end)		do {} while (0)
125#define flush_cache_vunmap(start, end)		do {} while (0)
126#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
127#define flush_dcache_page(page)			do {} while (0)
128#define flush_dcache_mmap_lock(mapping)		do {} while (0)
129#define flush_dcache_mmap_unlock(mapping)	do {} while (0)
130
131/*
132 * Physically-indexed cache management
133 */
134#if defined(CONFIG_MN10300_CACHE_FLUSH_ICACHE)
135extern void flush_icache_page(struct vm_area_struct *vma, struct page *page);
136extern void flush_icache_range(unsigned long start, unsigned long end);
137#elif defined(CONFIG_MN10300_CACHE_INV_ICACHE)
138static inline void flush_icache_page(struct vm_area_struct *vma,
139				     struct page *page)
140{
141	mn10300_icache_inv_page(page_to_phys(page));
142}
143extern void flush_icache_range(unsigned long start, unsigned long end);
144#else
145#define flush_icache_range(start, end)		do {} while (0)
146#define flush_icache_page(vma, pg)		do {} while (0)
147#endif
148
149
150#define flush_icache_user_range(vma, pg, adr, len) \
151	flush_icache_range(adr, adr + len)
152
153#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
154	do {					\
155		memcpy(dst, src, len);		\
156		flush_icache_page(vma, page);	\
157	} while (0)
158
159#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
160	memcpy(dst, src, len)
161
162/*
163 * Internal debugging function
164 */
165#ifdef CONFIG_DEBUG_PAGEALLOC
166extern void kernel_map_pages(struct page *page, int numpages, int enable);
167#endif
168
169#endif /* __ASSEMBLY__ */
170
171#endif /* _ASM_CACHEFLUSH_H */