ip27-berr.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:3k
- /*
- * 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) 1994, 1995, 1996, 1999, 2000 by Ralf Baechle
- * Copyright (C) 1999, 2000 by Silicon Graphics
- * Copyright (C) 2002 Maciej W. Rozycki
- */
- #include <linux/init.h>
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <asm/module.h>
- #include <asm/sn/addrs.h>
- #include <asm/sn/arch.h>
- #include <asm/sn/sn0/hub.h>
- #include <asm/traps.h>
- #include <asm/uaccess.h>
- extern void dump_tlb_addr(unsigned long addr);
- extern void dump_tlb_all(void);
- static void dump_hub_information(unsigned long errst0, unsigned long errst1)
- {
- static char *err_type[2][8] = {
- { NULL, "Uncached Partial Read PRERR", "DERR", "Read Timeout",
- NULL, NULL, NULL, NULL },
- { "WERR", "Uncached Partial Write", "PWERR", "Write Timeout",
- NULL, NULL, NULL, NULL }
- };
- int wrb = errst1 & PI_ERR_ST1_WRBRRB_MASK;
- if (!(errst0 & PI_ERR_ST0_VALID_MASK)) {
- printk("Hub does not contain valid error informationn");
- return;
- }
- printk("Hub has valid error information:n");
- if (errst0 & PI_ERR_ST0_OVERRUN_MASK)
- printk("Overrun is set. Error stack may contain additional "
- "information.n");
- printk("Hub error address is %08lxn",
- (errst0 & PI_ERR_ST0_ADDR_MASK) >> (PI_ERR_ST0_ADDR_SHFT - 3));
- printk("Incoming message command 0x%lxn",
- (errst0 & PI_ERR_ST0_CMD_MASK) >> PI_ERR_ST0_CMD_SHFT);
- printk("Supplemental field of incoming message is 0x%lxn",
- (errst0 & PI_ERR_ST0_SUPPL_MASK) >> PI_ERR_ST0_SUPPL_SHFT);
- printk("T5 Rn (for RRB only) is 0x%lxn",
- (errst0 & PI_ERR_ST0_REQNUM_MASK) >> PI_ERR_ST0_REQNUM_SHFT);
- printk("Error type is %sn", err_type[wrb]
- [(errst0 & PI_ERR_ST0_TYPE_MASK) >> PI_ERR_ST0_TYPE_SHFT]
- ? : "invalid");
- }
- int be_ip27_handler(struct pt_regs *regs, int is_fixup)
- {
- unsigned long errst0, errst1;
- int data = regs->cp0_cause & 4;
- int cpu = LOCAL_HUB_L(PI_CPU_NUM);
- if (is_fixup)
- return MIPS_BE_FIXUP;
- printk("Slice %c got %cbe at 0x%lxn", 'A' + cpu, data ? 'd' : 'i',
- regs->cp0_epc);
- printk("Hub information:n");
- printk("ERR_INT_PEND = 0x%06lxn", LOCAL_HUB_L(PI_ERR_INT_PEND));
- errst0 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS0_B : PI_ERR_STATUS0_A);
- errst1 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS1_B : PI_ERR_STATUS1_A);
- dump_hub_information(errst0, errst1);
- show_regs(regs);
- dump_tlb_all();
- while(1);
- force_sig(SIGBUS, current);
- }
- void __init bus_error_init(void)
- {
- /* XXX Initialize all the Hub & Bridge error handling here. */
- int cpu = LOCAL_HUB_L(PI_CPU_NUM);
- int cpuoff = cpu << 8;
- be_board_handler = be_ip27_handler;
- LOCAL_HUB_S(PI_ERR_INT_PEND,
- cpu ? PI_ERR_CLEAR_ALL_B : PI_ERR_CLEAR_ALL_A);
- LOCAL_HUB_S(PI_ERR_INT_MASK_A + cpuoff, 0);
- LOCAL_HUB_S(PI_ERR_STACK_ADDR_A + cpuoff, 0);
- LOCAL_HUB_S(PI_ERR_STACK_SIZE, 0); /* Disable error stack */
- LOCAL_HUB_S(PI_SYSAD_ERRCHK_EN, PI_SYSAD_CHECK_ALL);
- }