patch-2.4.22 linux-2.4.22/arch/ia64/sn/kernel/sn1/cache.c

• Lines: 82
• Date: 1969-12-31 16:00:00.000000000 -0800
• Orig file: linux-2.4.21/arch/ia64/sn/kernel/sn1/cache.c
• Orig date: 2002-08-02 17:39:43.000000000 -0700

diff -urN linux-2.4.21/arch/ia64/sn/kernel/sn1/cache.c linux-2.4.22/arch/ia64/sn/kernel/sn1/cache.c
@@ -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);
-
-}
-
-