1 /* 2 * arch/sh/mm/cache-sh2.c 3 * 4 * Copyright (C) 2002 Paul Mundt 5 * 6 * Released under the terms of the GNU GPL v2.0. 7 */ 8 9 #include <linux/init.h> 10 #include <linux/mm.h> 11 12 #include <asm/cache.h> 13 #include <asm/addrspace.h> 14 #include <asm/processor.h> 15 #include <asm/cacheflush.h> 16 #include <asm/io.h> 17 18 void __flush_wback_region(void *start, int size) 19 { 20 unsigned long v; 21 unsigned long begin, end; 22 23 begin = (unsigned long)start & ~(L1_CACHE_BYTES-1); 24 end = ((unsigned long)start + size + L1_CACHE_BYTES-1) 25 & ~(L1_CACHE_BYTES-1); 26 for (v = begin; v < end; v+=L1_CACHE_BYTES) { 27 /* FIXME cache purge */ 28 ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008); 29 } 30 } 31 32 void __flush_purge_region(void *start, int size) 33 { 34 unsigned long v; 35 unsigned long begin, end; 36 37 begin = (unsigned long)start & ~(L1_CACHE_BYTES-1); 38 end = ((unsigned long)start + size + L1_CACHE_BYTES-1) 39 & ~(L1_CACHE_BYTES-1); 40 for (v = begin; v < end; v+=L1_CACHE_BYTES) { 41 ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008); 42 } 43 } 44 45 void __flush_invalidate_region(void *start, int size) 46 { 47 unsigned long v; 48 unsigned long begin, end; 49 50 begin = (unsigned long)start & ~(L1_CACHE_BYTES-1); 51 end = ((unsigned long)start + size + L1_CACHE_BYTES-1) 52 & ~(L1_CACHE_BYTES-1); 53 for (v = begin; v < end; v+=L1_CACHE_BYTES) { 54 ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008); 55 } 56 } 57 58