^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * License. See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 1994, 1995, 1996, 1999, 2000 by Ralf Baechle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 1999, 2000 by Silicon Graphics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 2002 Maciej W. Rozycki
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/signal.h> /* for SIGBUS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/sched.h> /* schow_regs(), force_sig() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/sched/debug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/sched/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/sn/addrs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/sn/agent.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/sn/arch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/tlbdebug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/traps.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static void dump_hub_information(unsigned long errst0, unsigned long errst1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static char *err_type[2][8] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) { NULL, "Uncached Partial Read PRERR", "DERR", "Read Timeout",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) NULL, NULL, NULL, NULL },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) { "WERR", "Uncached Partial Write", "PWERR", "Write Timeout",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) NULL, NULL, NULL, NULL }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) union pi_err_stat0 st0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) union pi_err_stat1 st1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) st0.pi_stat0_word = errst0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) st1.pi_stat1_word = errst1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (!st0.pi_stat0_fmt.s0_valid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) pr_info("Hub does not contain valid error information\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) pr_info("Hub has valid error information:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) if (st0.pi_stat0_fmt.s0_ovr_run)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) pr_info("Overrun is set. Error stack may contain additional "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) "information.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) pr_info("Hub error address is %08lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) (unsigned long)st0.pi_stat0_fmt.s0_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) pr_info("Incoming message command 0x%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) (unsigned long)st0.pi_stat0_fmt.s0_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) pr_info("Supplemental field of incoming message is 0x%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) (unsigned long)st0.pi_stat0_fmt.s0_supl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) pr_info("T5 Rn (for RRB only) is 0x%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) (unsigned long)st0.pi_stat0_fmt.s0_t5_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) pr_info("Error type is %s\n", err_type[st1.pi_stat1_fmt.s1_rw_rb]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) [st0.pi_stat0_fmt.s0_err_type] ? : "invalid");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) int ip27_be_handler(struct pt_regs *regs, int is_fixup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) unsigned long errst0, errst1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int data = regs->cp0_cause & 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int cpu = LOCAL_HUB_L(PI_CPU_NUM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (is_fixup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return MIPS_BE_FIXUP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) printk("Slice %c got %cbe at 0x%lx\n", 'A' + cpu, data ? 'd' : 'i',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) regs->cp0_epc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) printk("Hub information:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) printk("ERR_INT_PEND = 0x%06llx\n", LOCAL_HUB_L(PI_ERR_INT_PEND));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) errst0 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS0_B : PI_ERR_STATUS0_A);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) errst1 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS1_B : PI_ERR_STATUS1_A);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) dump_hub_information(errst0, errst1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) show_regs(regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) dump_tlb_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) while(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) force_sig(SIGBUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) void __init ip27_be_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* XXX Initialize all the Hub & Bridge error handling here. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int cpu = LOCAL_HUB_L(PI_CPU_NUM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int cpuoff = cpu << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) board_be_handler = ip27_be_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) LOCAL_HUB_S(PI_ERR_INT_PEND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) cpu ? PI_ERR_CLEAR_ALL_B : PI_ERR_CLEAR_ALL_A);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) LOCAL_HUB_S(PI_ERR_INT_MASK_A + cpuoff, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) LOCAL_HUB_S(PI_ERR_STACK_ADDR_A + cpuoff, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) LOCAL_HUB_S(PI_ERR_STACK_SIZE, 0); /* Disable error stack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) LOCAL_HUB_S(PI_SYSAD_ERRCHK_EN, PI_SYSAD_CHECK_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags