/* MN10300 Cache flushing * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public Licence * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ #ifndef _ASM_CACHEFLUSH_H #define _ASM_CACHEFLUSH_H #ifndef __ASSEMBLY__ /* Keep includes the same across arches. */ #include <linux/mm.h> /* * virtually-indexed cache managment (our cache is physically indexed) */ #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(mm, start, end) do {} while (0) #define flush_cache_page(vma, vmaddr, pfn) do {} while (0) #define flush_cache_vmap(start, end) do {} while (0) #define flush_cache_vunmap(start, end) 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) /* * physically-indexed cache managment */ #ifndef CONFIG_MN10300_CACHE_DISABLED extern void flush_icache_range(unsigned long start, unsigned long end); extern void flush_icache_page(struct vm_area_struct *vma, struct page *pg); #else #define flush_icache_range(start, end) do {} while (0) #define flush_icache_page(vma, pg) do {} while (0) #endif #define flush_icache_user_range(vma, pg, adr, len) \ flush_icache_range(adr, adr + len) #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ do { \ memcpy(dst, src, len); \ flush_icache_page(vma, page); \ } while (0) #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ memcpy(dst, src, len) /* * primitive routines */ #ifndef CONFIG_MN10300_CACHE_DISABLED extern void mn10300_icache_inv(void); extern void mn10300_dcache_inv(void); extern void mn10300_dcache_inv_page(unsigned start); extern void mn10300_dcache_inv_range(unsigned start, unsigned end); extern void mn10300_dcache_inv_range2(unsigned start, unsigned size); #ifdef CONFIG_MN10300_CACHE_WBACK extern void mn10300_dcache_flush(void); extern void mn10300_dcache_flush_page(unsigned start); extern void mn10300_dcache_flush_range(unsigned start, unsigned end); extern void mn10300_dcache_flush_range2(unsigned start, unsigned size); extern void mn10300_dcache_flush_inv(void); extern void mn10300_dcache_flush_inv_page(unsigned start); extern void mn10300_dcache_flush_inv_range(unsigned start, unsigned end); extern void mn10300_dcache_flush_inv_range2(unsigned start, unsigned size); #else #define mn10300_dcache_flush() do {} while (0) #define mn10300_dcache_flush_page(start) do {} while (0) #define mn10300_dcache_flush_range(start, end) do {} while (0) #define mn10300_dcache_flush_range2(start, size) do {} while (0) #define mn10300_dcache_flush_inv() mn10300_dcache_inv() #define mn10300_dcache_flush_inv_page(start) \ mn10300_dcache_inv_page((start)) #define mn10300_dcache_flush_inv_range(start, end) \ mn10300_dcache_inv_range((start), (end)) #define mn10300_dcache_flush_inv_range2(start, size) \ mn10300_dcache_inv_range2((start), (size)) #endif /* CONFIG_MN10300_CACHE_WBACK */ #else #define mn10300_icache_inv() do {} while (0) #define mn10300_dcache_inv() do {} while (0) #define mn10300_dcache_inv_page(start) do {} while (0) #define mn10300_dcache_inv_range(start, end) do {} while (0) #define mn10300_dcache_inv_range2(start, size) do {} while (0) #define mn10300_dcache_flush() do {} while (0) #define mn10300_dcache_flush_inv_page(start) do {} while (0) #define mn10300_dcache_flush_inv() do {} while (0) #define mn10300_dcache_flush_inv_range(start, end) do {} while (0) #define mn10300_dcache_flush_inv_range2(start, size) do {} while (0) #define mn10300_dcache_flush_page(start) do {} while (0) #define mn10300_dcache_flush_range(start, end) do {} while (0) #define mn10300_dcache_flush_range2(start, size) do {} while (0) #endif /* CONFIG_MN10300_CACHE_DISABLED */ /* * internal debugging function */ #ifdef CONFIG_DEBUG_PAGEALLOC extern void kernel_map_pages(struct page *page, int numpages, int enable); #endif #endif /* __ASSEMBLY__ */ #endif /* _ASM_CACHEFLUSH_H */