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1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1994, 1995, 1996, 1999, 2000 by Ralf Baechle
7 * Copyright (C) 1999, 2000 by Silicon Graphics
8 * Copyright (C) 2002 Maciej W. Rozycki
9 */
10#include <linux/init.h>
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/signal.h> /* for SIGBUS */
14#include <linux/sched.h> /* schow_regs(), force_sig() */
15
16#include <asm/module.h>
17#include <asm/sn/addrs.h>
18#include <asm/sn/arch.h>
19#include <asm/sn/sn0/hub.h>
20#include <asm/tlbdebug.h>
21#include <asm/traps.h>
22#include <asm/uaccess.h>
23
24static void dump_hub_information(unsigned long errst0, unsigned long errst1)
25{
26 static char *err_type[2][8] = {
27 { NULL, "Uncached Partial Read PRERR", "DERR", "Read Timeout",
28 NULL, NULL, NULL, NULL },
29 { "WERR", "Uncached Partial Write", "PWERR", "Write Timeout",
30 NULL, NULL, NULL, NULL }
31 };
32 int wrb = errst1 & PI_ERR_ST1_WRBRRB_MASK;
33
34 if (!(errst0 & PI_ERR_ST0_VALID_MASK)) {
35 printk("Hub does not contain valid error information\n");
36 return;
37 }
38
39
40 printk("Hub has valid error information:\n");
41 if (errst0 & PI_ERR_ST0_OVERRUN_MASK)
42 printk("Overrun is set. Error stack may contain additional "
43 "information.\n");
44 printk("Hub error address is %08lx\n",
45 (errst0 & PI_ERR_ST0_ADDR_MASK) >> (PI_ERR_ST0_ADDR_SHFT - 3));
46 printk("Incoming message command 0x%lx\n",
47 (errst0 & PI_ERR_ST0_CMD_MASK) >> PI_ERR_ST0_CMD_SHFT);
48 printk("Supplemental field of incoming message is 0x%lx\n",
49 (errst0 & PI_ERR_ST0_SUPPL_MASK) >> PI_ERR_ST0_SUPPL_SHFT);
50 printk("T5 Rn (for RRB only) is 0x%lx\n",
51 (errst0 & PI_ERR_ST0_REQNUM_MASK) >> PI_ERR_ST0_REQNUM_SHFT);
52 printk("Error type is %s\n", err_type[wrb]
53 [(errst0 & PI_ERR_ST0_TYPE_MASK) >> PI_ERR_ST0_TYPE_SHFT]
54 ? : "invalid");
55}
56
57int ip27_be_handler(struct pt_regs *regs, int is_fixup)
58{
59 unsigned long errst0, errst1;
60 int data = regs->cp0_cause & 4;
61 int cpu = LOCAL_HUB_L(PI_CPU_NUM);
62
63 if (is_fixup)
64 return MIPS_BE_FIXUP;
65
66 printk("Slice %c got %cbe at 0x%lx\n", 'A' + cpu, data ? 'd' : 'i',
67 regs->cp0_epc);
68 printk("Hub information:\n");
69 printk("ERR_INT_PEND = 0x%06llx\n", LOCAL_HUB_L(PI_ERR_INT_PEND));
70 errst0 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS0_B : PI_ERR_STATUS0_A);
71 errst1 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS1_B : PI_ERR_STATUS1_A);
72 dump_hub_information(errst0, errst1);
73 show_regs(regs);
74 dump_tlb_all();
75 while(1);
76 force_sig(SIGBUS, current);
77}
78
79void __init ip27_be_init(void)
80{
81 /* XXX Initialize all the Hub & Bridge error handling here. */
82 int cpu = LOCAL_HUB_L(PI_CPU_NUM);
83 int cpuoff = cpu << 8;
84
85 board_be_handler = ip27_be_handler;
86
87 LOCAL_HUB_S(PI_ERR_INT_PEND,
88 cpu ? PI_ERR_CLEAR_ALL_B : PI_ERR_CLEAR_ALL_A);
89 LOCAL_HUB_S(PI_ERR_INT_MASK_A + cpuoff, 0);
90 LOCAL_HUB_S(PI_ERR_STACK_ADDR_A + cpuoff, 0);
91 LOCAL_HUB_S(PI_ERR_STACK_SIZE, 0); /* Disable error stack */
92 LOCAL_HUB_S(PI_SYSAD_ERRCHK_EN, PI_SYSAD_CHECK_ALL);
93}
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1994, 1995, 1996, 1999, 2000 by Ralf Baechle
7 * Copyright (C) 1999, 2000 by Silicon Graphics
8 * Copyright (C) 2002 Maciej W. Rozycki
9 */
10#include <linux/init.h>
11#include <linux/kernel.h>
12#include <linux/signal.h> /* for SIGBUS */
13#include <linux/sched.h> /* schow_regs(), force_sig() */
14#include <linux/sched/debug.h>
15#include <linux/sched/signal.h>
16
17#include <asm/ptrace.h>
18#include <asm/sn/addrs.h>
19#include <asm/sn/agent.h>
20#include <asm/sn/arch.h>
21#include <asm/tlbdebug.h>
22#include <asm/traps.h>
23#include <linux/uaccess.h>
24
25static void dump_hub_information(unsigned long errst0, unsigned long errst1)
26{
27 static char *err_type[2][8] = {
28 { NULL, "Uncached Partial Read PRERR", "DERR", "Read Timeout",
29 NULL, NULL, NULL, NULL },
30 { "WERR", "Uncached Partial Write", "PWERR", "Write Timeout",
31 NULL, NULL, NULL, NULL }
32 };
33 union pi_err_stat0 st0;
34 union pi_err_stat1 st1;
35
36 st0.pi_stat0_word = errst0;
37 st1.pi_stat1_word = errst1;
38
39 if (!st0.pi_stat0_fmt.s0_valid) {
40 pr_info("Hub does not contain valid error information\n");
41 return;
42 }
43
44 pr_info("Hub has valid error information:\n");
45 if (st0.pi_stat0_fmt.s0_ovr_run)
46 pr_info("Overrun is set. Error stack may contain additional "
47 "information.\n");
48 pr_info("Hub error address is %08lx\n",
49 (unsigned long)st0.pi_stat0_fmt.s0_addr);
50 pr_info("Incoming message command 0x%lx\n",
51 (unsigned long)st0.pi_stat0_fmt.s0_cmd);
52 pr_info("Supplemental field of incoming message is 0x%lx\n",
53 (unsigned long)st0.pi_stat0_fmt.s0_supl);
54 pr_info("T5 Rn (for RRB only) is 0x%lx\n",
55 (unsigned long)st0.pi_stat0_fmt.s0_t5_req);
56 pr_info("Error type is %s\n", err_type[st1.pi_stat1_fmt.s1_rw_rb]
57 [st0.pi_stat0_fmt.s0_err_type] ? : "invalid");
58}
59
60int ip27_be_handler(struct pt_regs *regs, int is_fixup)
61{
62 unsigned long errst0, errst1;
63 int data = regs->cp0_cause & 4;
64 int cpu = LOCAL_HUB_L(PI_CPU_NUM);
65
66 if (is_fixup)
67 return MIPS_BE_FIXUP;
68
69 printk("Slice %c got %cbe at 0x%lx\n", 'A' + cpu, data ? 'd' : 'i',
70 regs->cp0_epc);
71 printk("Hub information:\n");
72 printk("ERR_INT_PEND = 0x%06llx\n", LOCAL_HUB_L(PI_ERR_INT_PEND));
73 errst0 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS0_B : PI_ERR_STATUS0_A);
74 errst1 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS1_B : PI_ERR_STATUS1_A);
75 dump_hub_information(errst0, errst1);
76 show_regs(regs);
77 dump_tlb_all();
78 while(1);
79 force_sig(SIGBUS);
80}
81
82void __init ip27_be_init(void)
83{
84 /* XXX Initialize all the Hub & Bridge error handling here. */
85 int cpu = LOCAL_HUB_L(PI_CPU_NUM);
86 int cpuoff = cpu << 8;
87
88 board_be_handler = ip27_be_handler;
89
90 LOCAL_HUB_S(PI_ERR_INT_PEND,
91 cpu ? PI_ERR_CLEAR_ALL_B : PI_ERR_CLEAR_ALL_A);
92 LOCAL_HUB_S(PI_ERR_INT_MASK_A + cpuoff, 0);
93 LOCAL_HUB_S(PI_ERR_STACK_ADDR_A + cpuoff, 0);
94 LOCAL_HUB_S(PI_ERR_STACK_SIZE, 0); /* Disable error stack */
95 LOCAL_HUB_S(PI_SYSAD_ERRCHK_EN, PI_SYSAD_CHECK_ALL);
96}