patch-2.4.22 linux-2.4.22/arch/mips/sibyte/sb1/cache_err_handler.S

• Lines: 91
• Date: 1969-12-31 16:00:00.000000000 -0800
• Orig file: linux-2.4.21/arch/mips/sibyte/sb1/cache_err_handler.S
• Orig date: 2002-11-28 15:53:10.000000000 -0800

diff -urN linux-2.4.21/arch/mips/sibyte/sb1/cache_err_handler.S linux-2.4.22/arch/mips/sibyte/sb1/cache_err_handler.S
@@ -1,90 +0,0 @@
-/*
- * Copyright (C) 2001 Broadcom Corporation
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- */
-#include <linux/config.h>
-
-#include <asm/asm.h>
-#include <asm/regdef.h>
-#include <asm/mipsregs.h>
-#include <asm/sibyte/board.h>
-
-	.text
-	/* Special Cache Error handler for SB1 for now */
-	LEAF(except_vec2_sb1)
-	.set	noat
-	.set	mips0
-	/*
-	 * This is a very bad place to be.  Our cache error detection has
-	 * triggered.  If we have write-back data in the cache, we may not be
-	 * able to recover.  As a first-order desperate measure, turn off KSEG0
-	 * cacheing.
-	 */
-	.set	push
-	#.set	mips64
-	.set	mips4
-	.set	reorder
-#ifdef CONFIG_SB1_CERR_IGNORE_RECOVERABLE
-	mfc0	k1, $26				# mfc0	k1, $26, 0
-	# check if error was recoverable
-	# XXXKW - count them
-	bltz	k1, leave_cerr
-#endif
-#ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
-	# look for signature of spurious CErr
-	lui	k0, 0x4000
-	bne	k0, k1, real_cerr
-	.word	0x401Bd801			# mfc0	k1, $27, 1
-	lui	k0, 0xffe0
-	and	k1, k0, k1
-	lui	k0, 0x0200
-	beq	k0, k1, leave_cerr
-	# XXXKW - count them
-#endif
-
-real_cerr:
-#ifdef CONFIG_SB1_CERR_SPIN
-        setleds(k0,k1,'C','E','R','R')
-
-1:	b	1b
-#else
-	mfc0	k0,CP0_CONFIG
-	li	k1,~CONF_CM_CMASK
-	and	k0,k0,k1
-	ori	k0,k0,CONF_CM_UNCACHED
-	mtc0	k0,CP0_CONFIG
-
-	SSNOP
-	SSNOP
-	SSNOP
-	SSNOP
-	bnezl	$0, 1f
-1:
-	j	sb1_cache_error
-#endif
-
-#if defined(CONFIG_SB1_PASS_1_WORKAROUNDS) || defined(CONFIG_SB1_CERR_IGNORE_RECOVERABLE)
-leave_cerr:
-	# clear/unlock the registers
-	mtc0	zero, $26			# mtc0	zero, $26, 0
-	mtc0	zero, $27			# mtc0	zero, $27, 0
-	.word	0x4080d801			# mtc0	zero, $27, 1
-	.word	0x4080d803			# mtc0	zero, $27, 3
-	eret
-#endif
-
-	.set	pop
-	END(except_vec2_sb1)