2 * Copyright (C) 2006 Atmel Corporation
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 #ifndef __ASM_AVR32_CACHEFLUSH_H
23 #define __ASM_AVR32_CACHEFLUSH_H
26 * Invalidate any cacheline containing virtual address vaddr without
27 * writing anything back to memory.
29 * Note that this function may corrupt unrelated data structures when
30 * applied on buffers that are not cacheline aligned in both ends.
32 static inline void dcache_invalidate_line(volatile void *vaddr)
34 asm volatile("cache %0[0], 0x0b" : : "r"(vaddr) : "memory");
38 * Make sure any cacheline containing virtual address vaddr is written
41 static inline void dcache_clean_line(volatile void *vaddr)
43 asm volatile("cache %0[0], 0x0c" : : "r"(vaddr) : "memory");
47 * Make sure any cacheline containing virtual address vaddr is written
48 * to memory and then invalidate it.
50 static inline void dcache_flush_line(volatile void *vaddr)
52 asm volatile("cache %0[0], 0x0d" : : "r"(vaddr) : "memory");
56 * Invalidate any instruction cacheline containing virtual address
59 static inline void icache_invalidate_line(volatile void *vaddr)
61 asm volatile("cache %0[0], 0x01" : : "r"(vaddr) : "memory");
65 * Applies the above functions on all lines that are touched by the
66 * specified virtual address range.
68 void dcache_invalidate_range(volatile void *start, size_t len);
69 void dcache_clean_range(volatile void *start, size_t len);
70 void dcache_flush_range(volatile void *start, size_t len);
71 void icache_invalidate_range(volatile void *start, size_t len);
73 static inline void dcache_flush_unlocked(void)
75 asm volatile("cache %0[5], 0x08" : : "r"(0) : "memory");
79 * Make sure any pending writes are completed before continuing.
81 #define sync_write_buffer() asm volatile("sync 0" : : : "memory")
83 #endif /* __ASM_AVR32_CACHEFLUSH_H */