diff options
Diffstat (limited to 'arch/ia64/sn/kernel/sn1/cache.c')
| -rw-r--r-- | arch/ia64/sn/kernel/sn1/cache.c | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/arch/ia64/sn/kernel/sn1/cache.c b/arch/ia64/sn/kernel/sn1/cache.c deleted file mode 100644 index c0894b03fca091..00000000000000 --- a/arch/ia64/sn/kernel/sn1/cache.c +++ /dev/null @@ -1,81 +0,0 @@ -/* - * - * 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. - * - * Copyright (C) 2001-2002 Silicon Graphics, Inc. All rights reserved. - * - */ - -#include <linux/kernel.h> -#include <asm/pgalloc.h> -#include <asm/sn/arch.h> -#include <asm/sn/sn_cpuid.h> -#include <asm/sn/sn1/synergy.h> -#include <asm/delay.h> - -#ifndef MB -#define MB (1024*1024) -#endif - -/* - * Lock for protecting SYN_TAG_DISABLE_WAY. - * Consider making this a per-FSB lock. - */ -static spinlock_t flush_lock = SPIN_LOCK_UNLOCKED; - -/** - * sn_flush_all_caches - flush a range of addresses from all caches (incl. L4) - * @flush_addr: identity mapped region 7 address to start flushing - * @bytes: number of bytes to flush - * - * Flush a range of addresses from all caches including L4. All addresses - * fully or partially contained within @flush_addr to @flush_addr + @bytes - * are flushed from the all caches. - */ -void -sn_flush_all_caches(long flush_addr, long bytes) -{ - ulong addr, baddr, eaddr, bitbucket; - int way, alias; - - /* - * Because of the way synergy implements "fc", this flushes the - * data from all caches on all cpus & L4's on OTHER FSBs. It also - * flushes both cpus on the local FSB. It does NOT flush it from - * the local FSB. - */ - flush_icache_range(flush_addr, flush_addr+bytes); - - /* - * Memory DIMMs are a minimum of 256MB and start on 256MB - * boundaries. Convert the start address to an address - * that is between +0MB & +128 of the same DIMM. - * Then add 8MB to skip the uncached MinState areas if the address - * is on the master node. - */ - if (bytes > SYNERGY_L4_BYTES_PER_WAY) - bytes = SYNERGY_L4_BYTES_PER_WAY; - baddr = TO_NODE(smp_physical_node_id(), PAGE_OFFSET + (flush_addr & (128*MB-1)) + 8*MB); - eaddr = (baddr+bytes+SYNERGY_BLOCK_SIZE-1) & ~(SYNERGY_BLOCK_SIZE-1); - baddr = baddr & ~(SYNERGY_BLOCK_SIZE-1); - - /* - * Now flush the local synergy. - */ - spin_lock(&flush_lock); - for(way=0; way<SYNERGY_L4_WAYS; way++) { - WRITE_LOCAL_SYNERGY_REG(SYN_TAG_DISABLE_WAY, 0xffL ^ (1L<<way)); - mb(); - for(alias=0; alias < 9; alias++) - for(addr=baddr; addr<eaddr; addr+=SYNERGY_BLOCK_SIZE) - bitbucket = *(volatile ulong *)(addr+alias*8*MB); - mb(); - } - WRITE_LOCAL_SYNERGY_REG(SYN_TAG_DISABLE_WAY, 0); - spin_unlock(&flush_lock); - -} - - |