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96 lines
3.0 KiB
96 lines
3.0 KiB
/* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file "COPYING" in the main directory of this archive |
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* for more details. |
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* |
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* Copyright (C) 1994, 1995, 1996, 1999, 2000 by Ralf Baechle |
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* Copyright (C) 1999, 2000 by Silicon Graphics |
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* Copyright (C) 2002 Maciej W. Rozycki |
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*/ |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/signal.h> /* for SIGBUS */ |
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#include <linux/sched.h> /* schow_regs(), force_sig() */ |
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#include <linux/sched/debug.h> |
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#include <linux/sched/signal.h> |
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#include <asm/ptrace.h> |
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#include <asm/sn/addrs.h> |
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#include <asm/sn/agent.h> |
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#include <asm/sn/arch.h> |
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#include <asm/tlbdebug.h> |
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#include <asm/traps.h> |
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#include <linux/uaccess.h> |
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static void dump_hub_information(unsigned long errst0, unsigned long errst1) |
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{ |
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static char *err_type[2][8] = { |
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{ NULL, "Uncached Partial Read PRERR", "DERR", "Read Timeout", |
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NULL, NULL, NULL, NULL }, |
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{ "WERR", "Uncached Partial Write", "PWERR", "Write Timeout", |
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NULL, NULL, NULL, NULL } |
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}; |
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union pi_err_stat0 st0; |
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union pi_err_stat1 st1; |
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st0.pi_stat0_word = errst0; |
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st1.pi_stat1_word = errst1; |
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if (!st0.pi_stat0_fmt.s0_valid) { |
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pr_info("Hub does not contain valid error information\n"); |
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return; |
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} |
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pr_info("Hub has valid error information:\n"); |
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if (st0.pi_stat0_fmt.s0_ovr_run) |
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pr_info("Overrun is set. Error stack may contain additional " |
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"information.\n"); |
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pr_info("Hub error address is %08lx\n", |
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(unsigned long)st0.pi_stat0_fmt.s0_addr); |
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pr_info("Incoming message command 0x%lx\n", |
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(unsigned long)st0.pi_stat0_fmt.s0_cmd); |
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pr_info("Supplemental field of incoming message is 0x%lx\n", |
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(unsigned long)st0.pi_stat0_fmt.s0_supl); |
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pr_info("T5 Rn (for RRB only) is 0x%lx\n", |
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(unsigned long)st0.pi_stat0_fmt.s0_t5_req); |
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pr_info("Error type is %s\n", err_type[st1.pi_stat1_fmt.s1_rw_rb] |
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[st0.pi_stat0_fmt.s0_err_type] ? : "invalid"); |
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} |
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int ip27_be_handler(struct pt_regs *regs, int is_fixup) |
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{ |
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unsigned long errst0, errst1; |
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int data = regs->cp0_cause & 4; |
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int cpu = LOCAL_HUB_L(PI_CPU_NUM); |
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if (is_fixup) |
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return MIPS_BE_FIXUP; |
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printk("Slice %c got %cbe at 0x%lx\n", 'A' + cpu, data ? 'd' : 'i', |
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regs->cp0_epc); |
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printk("Hub information:\n"); |
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printk("ERR_INT_PEND = 0x%06llx\n", LOCAL_HUB_L(PI_ERR_INT_PEND)); |
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errst0 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS0_B : PI_ERR_STATUS0_A); |
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errst1 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS1_B : PI_ERR_STATUS1_A); |
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dump_hub_information(errst0, errst1); |
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show_regs(regs); |
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dump_tlb_all(); |
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while(1); |
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force_sig(SIGBUS); |
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} |
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void __init ip27_be_init(void) |
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{ |
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/* XXX Initialize all the Hub & Bridge error handling here. */ |
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int cpu = LOCAL_HUB_L(PI_CPU_NUM); |
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int cpuoff = cpu << 8; |
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board_be_handler = ip27_be_handler; |
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LOCAL_HUB_S(PI_ERR_INT_PEND, |
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cpu ? PI_ERR_CLEAR_ALL_B : PI_ERR_CLEAR_ALL_A); |
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LOCAL_HUB_S(PI_ERR_INT_MASK_A + cpuoff, 0); |
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LOCAL_HUB_S(PI_ERR_STACK_ADDR_A + cpuoff, 0); |
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LOCAL_HUB_S(PI_ERR_STACK_SIZE, 0); /* Disable error stack */ |
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LOCAL_HUB_S(PI_SYSAD_ERRCHK_EN, PI_SYSAD_CHECK_ALL); |
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}
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