| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Ivan Kokshaysky | 741 | 75.69% | 3 | 13.64% |
| Richard Henderson | 152 | 15.53% | 2 | 9.09% |
| Linus Torvalds (pre-git) | 69 | 7.05% | 13 | 59.09% |
| Joe Perches | 9 | 0.92% | 1 | 4.55% |
| Al Viro | 5 | 0.51% | 1 | 4.55% |
| Randy Dunlap | 2 | 0.20% | 1 | 4.55% |
| Greg Kroah-Hartman | 1 | 0.10% | 1 | 4.55% |
| Total | 979 | 22 |
// SPDX-License-Identifier: GPL-2.0 /* * linux/arch/alpha/kernel/err_ev6.c * * Copyright (C) 2000 Jeff Wiedemeier (Compaq Computer Corporation) * * Error handling code supporting Alpha systems */ #include <linux/sched.h> #include <asm/io.h> #include <asm/irq_regs.h> #include <asm/hwrpb.h> #include <asm/smp.h> #include <asm/err_common.h> #include <asm/err_ev6.h> #include "err_impl.h" #include "proto.h" static int ev6_parse_ibox(u64 i_stat, int print) { int status = MCHK_DISPOSITION_REPORT; #define EV6__I_STAT__PAR (1UL << 29) #define EV6__I_STAT__ERRMASK (EV6__I_STAT__PAR) if (!(i_stat & EV6__I_STAT__ERRMASK)) return MCHK_DISPOSITION_UNKNOWN_ERROR; if (!print) return status; if (i_stat & EV6__I_STAT__PAR) printk("%s Icache parity error\n", err_print_prefix); return status; } static int ev6_parse_mbox(u64 mm_stat, u64 d_stat, u64 c_stat, int print) { int status = MCHK_DISPOSITION_REPORT; #define EV6__MM_STAT__DC_TAG_PERR (1UL << 10) #define EV6__MM_STAT__ERRMASK (EV6__MM_STAT__DC_TAG_PERR) #define EV6__D_STAT__TPERR_P0 (1UL << 0) #define EV6__D_STAT__TPERR_P1 (1UL << 1) #define EV6__D_STAT__ECC_ERR_ST (1UL << 2) #define EV6__D_STAT__ECC_ERR_LD (1UL << 3) #define EV6__D_STAT__SEO (1UL << 4) #define EV6__D_STAT__ERRMASK (EV6__D_STAT__TPERR_P0 | \ EV6__D_STAT__TPERR_P1 | \ EV6__D_STAT__ECC_ERR_ST | \ EV6__D_STAT__ECC_ERR_LD | \ EV6__D_STAT__SEO) if (!(d_stat & EV6__D_STAT__ERRMASK) && !(mm_stat & EV6__MM_STAT__ERRMASK)) return MCHK_DISPOSITION_UNKNOWN_ERROR; if (!print) return status; if (mm_stat & EV6__MM_STAT__DC_TAG_PERR) printk("%s Dcache tag parity error on probe\n", err_print_prefix); if (d_stat & EV6__D_STAT__TPERR_P0) printk("%s Dcache tag parity error - pipe 0\n", err_print_prefix); if (d_stat & EV6__D_STAT__TPERR_P1) printk("%s Dcache tag parity error - pipe 1\n", err_print_prefix); if (d_stat & EV6__D_STAT__ECC_ERR_ST) printk("%s ECC error occurred on a store\n", err_print_prefix); if (d_stat & EV6__D_STAT__ECC_ERR_LD) printk("%s ECC error occurred on a %s load\n", err_print_prefix, c_stat ? "" : "speculative "); if (d_stat & EV6__D_STAT__SEO) printk("%s Dcache second error\n", err_print_prefix); return status; } static int ev6_parse_cbox(u64 c_addr, u64 c1_syn, u64 c2_syn, u64 c_stat, u64 c_sts, int print) { static const char * const sourcename[] = { "UNKNOWN", "UNKNOWN", "UNKNOWN", "MEMORY", "BCACHE", "DCACHE", "BCACHE PROBE", "BCACHE PROBE" }; static const char * const streamname[] = { "D", "I" }; static const char * const bitsname[] = { "SINGLE", "DOUBLE" }; int status = MCHK_DISPOSITION_REPORT; int source = -1, stream = -1, bits = -1; #define EV6__C_STAT__BC_PERR (0x01) #define EV6__C_STAT__DC_PERR (0x02) #define EV6__C_STAT__DSTREAM_MEM_ERR (0x03) #define EV6__C_STAT__DSTREAM_BC_ERR (0x04) #define EV6__C_STAT__DSTREAM_DC_ERR (0x05) #define EV6__C_STAT__PROBE_BC_ERR0 (0x06) /* both 6 and 7 indicate... */ #define EV6__C_STAT__PROBE_BC_ERR1 (0x07) /* ...probe bc error. */ #define EV6__C_STAT__ISTREAM_MEM_ERR (0x0B) #define EV6__C_STAT__ISTREAM_BC_ERR (0x0C) #define EV6__C_STAT__DSTREAM_MEM_DBL (0x13) #define EV6__C_STAT__DSTREAM_BC_DBL (0x14) #define EV6__C_STAT__ISTREAM_MEM_DBL (0x1B) #define EV6__C_STAT__ISTREAM_BC_DBL (0x1C) #define EV6__C_STAT__SOURCE_MEMORY (0x03) #define EV6__C_STAT__SOURCE_BCACHE (0x04) #define EV6__C_STAT__SOURCE__S (0) #define EV6__C_STAT__SOURCE__M (0x07) #define EV6__C_STAT__ISTREAM__S (3) #define EV6__C_STAT__ISTREAM__M (0x01) #define EV6__C_STAT__DOUBLE__S (4) #define EV6__C_STAT__DOUBLE__M (0x01) #define EV6__C_STAT__ERRMASK (0x1F) #define EV6__C_STS__SHARED (1 << 0) #define EV6__C_STS__DIRTY (1 << 1) #define EV6__C_STS__VALID (1 << 2) #define EV6__C_STS__PARITY (1 << 3) if (!(c_stat & EV6__C_STAT__ERRMASK)) return MCHK_DISPOSITION_UNKNOWN_ERROR; if (!print) return status; source = EXTRACT(c_stat, EV6__C_STAT__SOURCE); stream = EXTRACT(c_stat, EV6__C_STAT__ISTREAM); bits = EXTRACT(c_stat, EV6__C_STAT__DOUBLE); if (c_stat & EV6__C_STAT__BC_PERR) { printk("%s Bcache tag parity error\n", err_print_prefix); source = -1; } if (c_stat & EV6__C_STAT__DC_PERR) { printk("%s Dcache tag parity error\n", err_print_prefix); source = -1; } if (c_stat == EV6__C_STAT__PROBE_BC_ERR0 || c_stat == EV6__C_STAT__PROBE_BC_ERR1) { printk("%s Bcache single-bit error on a probe hit\n", err_print_prefix); source = -1; } if (source != -1) printk("%s %s-STREAM %s-BIT ECC error from %s\n", err_print_prefix, streamname[stream], bitsname[bits], sourcename[source]); printk("%s Address: 0x%016llx\n" " Syndrome[upper.lower]: %02llx.%02llx\n", err_print_prefix, c_addr, c2_syn, c1_syn); if (source == EV6__C_STAT__SOURCE_MEMORY || source == EV6__C_STAT__SOURCE_BCACHE) printk("%s Block status: %s%s%s%s\n", err_print_prefix, (c_sts & EV6__C_STS__SHARED) ? "SHARED " : "", (c_sts & EV6__C_STS__DIRTY) ? "DIRTY " : "", (c_sts & EV6__C_STS__VALID) ? "VALID " : "", (c_sts & EV6__C_STS__PARITY) ? "PARITY " : ""); return status; } void ev6_register_error_handlers(void) { /* None right now. */ } int ev6_process_logout_frame(struct el_common *mchk_header, int print) { struct el_common_EV6_mcheck *ev6mchk = (struct el_common_EV6_mcheck *)mchk_header; int status = MCHK_DISPOSITION_UNKNOWN_ERROR; status |= ev6_parse_ibox(ev6mchk->I_STAT, print); status |= ev6_parse_mbox(ev6mchk->MM_STAT, ev6mchk->DC_STAT, ev6mchk->C_STAT, print); status |= ev6_parse_cbox(ev6mchk->C_ADDR, ev6mchk->DC1_SYNDROME, ev6mchk->DC0_SYNDROME, ev6mchk->C_STAT, ev6mchk->C_STS, print); if (!print) return status; if (status != MCHK_DISPOSITION_DISMISS) { char *saved_err_prefix = err_print_prefix; /* * Dump some additional information from the frame */ printk("%s EXC_ADDR: 0x%016lx IER_CM: 0x%016lx" " ISUM: 0x%016lx\n" " PAL_BASE: 0x%016lx I_CTL: 0x%016lx" " PCTX: 0x%016lx\n", err_print_prefix, ev6mchk->EXC_ADDR, ev6mchk->IER_CM, ev6mchk->ISUM, ev6mchk->PAL_BASE, ev6mchk->I_CTL, ev6mchk->PCTX); if (status == MCHK_DISPOSITION_UNKNOWN_ERROR) { printk("%s UNKNOWN error, frame follows:\n", err_print_prefix); } else { /* had decode -- downgrade print level for frame */ err_print_prefix = KERN_NOTICE; } mchk_dump_logout_frame(mchk_header); err_print_prefix = saved_err_prefix; } return status; } void ev6_machine_check(unsigned long vector, unsigned long la_ptr) { struct el_common *mchk_header = (struct el_common *)la_ptr; /* * Sync the processor */ mb(); draina(); /* * Parse the logout frame without printing first. If the only error(s) * found are have a disposition of "dismiss", then just dismiss them * and don't print any message */ if (ev6_process_logout_frame(mchk_header, 0) != MCHK_DISPOSITION_DISMISS) { char *saved_err_prefix = err_print_prefix; err_print_prefix = KERN_CRIT; /* * Either a nondismissable error was detected or no * recognized error was detected in the logout frame * -- report the error in either case */ printk("%s*CPU %s Error (Vector 0x%x) reported on CPU %d:\n", err_print_prefix, (vector == SCB_Q_PROCERR)?"Correctable":"Uncorrectable", (unsigned int)vector, (int)smp_processor_id()); ev6_process_logout_frame(mchk_header, 1); dik_show_regs(get_irq_regs(), NULL); err_print_prefix = saved_err_prefix; } /* * Release the logout frame */ wrmces(0x7); mb(); }
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