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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 | /* * 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(); } |