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   1 /*
   2  *      linux/arch/alpha/kernel/err_ev7.c
   3  *
   4  *      Copyright (C) 2000 Jeff Wiedemeier (Compaq Computer Corporation)
   5  *
   6  *      Error handling code supporting Alpha systems
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/sched.h>
  11
  12 #include <asm/io.h>
  13 #include <asm/hwrpb.h>
  14 #include <asm/smp.h>
  15 #include <asm/err_common.h>
  16 #include <asm/err_ev7.h>
  17
  18 #include "err_impl.h"
  19 #include "proto.h"
  20
  21 struct ev7_lf_subpackets *
  22 ev7_collect_logout_frame_subpackets(struct el_subpacket *el_ptr,
  23                                     struct ev7_lf_subpackets *lf_subpackets)
  24 {
  25         struct el_subpacket *subpacket;
  26         int i;
  27
  28         /*
  29          * A Marvel machine check frame is always packaged in an
  30          * el_subpacket of class HEADER, type LOGOUT_FRAME.
  31          */
  32         if (el_ptr->class != EL_CLASS__HEADER ||
  33             el_ptr->type != EL_TYPE__HEADER__LOGOUT_FRAME)
  34                 return NULL;
  35
  36         /*
  37          * It is a logout frame header. Look at the one subpacket.
  38          */
  39         el_ptr = (struct el_subpacket *)
  40                 ((unsigned long)el_ptr + el_ptr->length);
  41
  42         /*
  43          * It has to be class PAL, type LOGOUT_FRAME.
  44          */
  45         if (el_ptr->class != EL_CLASS__PAL ||
  46             el_ptr->type != EL_TYPE__PAL__LOGOUT_FRAME)
  47                 return NULL;
  48
  49         lf_subpackets->logout = (struct ev7_pal_logout_subpacket *)
  50                 el_ptr->by_type.raw.data_start;
  51
  52         /*
  53          * Process the subpackets.
  54          */
  55         subpacket = (struct el_subpacket *)
  56                 ((unsigned long)el_ptr + el_ptr->length);
  57         for (i = 0;
  58              subpacket && i < lf_subpackets->logout->subpacket_count;
  59              subpacket = (struct el_subpacket *)
  60                      ((unsigned long)subpacket + subpacket->length), i++) {
  61                 /*
  62                  * All subpackets should be class PAL.
  63                  */
  64                 if (subpacket->class != EL_CLASS__PAL) {
  65                         printk("%s**UNEXPECTED SUBPACKET CLASS %d "
  66                                "IN LOGOUT FRAME (packet %d\n",
  67                                err_print_prefix, subpacket->class, i);
  68                         return NULL;
  69                 }
  70
  71                 /*
  72                  * Remember the subpacket.
  73                  */
  74                 switch(subpacket->type) {
  75                 case EL_TYPE__PAL__EV7_PROCESSOR:
  76                         lf_subpackets->ev7 =
  77                                 (struct ev7_pal_processor_subpacket *)
  78                                 subpacket->by_type.raw.data_start;
  79                         break;
  80
  81                 case EL_TYPE__PAL__EV7_RBOX:
  82                         lf_subpackets->rbox = (struct ev7_pal_rbox_subpacket *)
  83                                 subpacket->by_type.raw.data_start;
  84                         break;
  85
  86                 case EL_TYPE__PAL__EV7_ZBOX:
  87                         lf_subpackets->zbox = (struct ev7_pal_zbox_subpacket *)
  88                                 subpacket->by_type.raw.data_start;
  89                         break;
  90
  91                 case EL_TYPE__PAL__EV7_IO:
  92                         lf_subpackets->io = (struct ev7_pal_io_subpacket *)
  93                                 subpacket->by_type.raw.data_start;
  94                         break;
  95
  96                 case EL_TYPE__PAL__ENV__AMBIENT_TEMPERATURE:
  97                 case EL_TYPE__PAL__ENV__AIRMOVER_FAN:
  98                 case EL_TYPE__PAL__ENV__VOLTAGE:
  99                 case EL_TYPE__PAL__ENV__INTRUSION:
 100                 case EL_TYPE__PAL__ENV__POWER_SUPPLY:
 101                 case EL_TYPE__PAL__ENV__LAN:
 102                 case EL_TYPE__PAL__ENV__HOT_PLUG:
 103                         lf_subpackets->env[ev7_lf_env_index(subpacket->type)] =
 104                                 (struct ev7_pal_environmental_subpacket *)
 105                                 subpacket->by_type.raw.data_start;
 106                         break;
 107
 108                 default:
 109                         /*
 110                          * Don't know what kind of frame this is.
 111                          */
 112                         return NULL;
 113                 }
 114         }
 115
 116         return lf_subpackets;
 117 }
 118
 119 void
 120 ev7_machine_check(u64 vector, u64 la_ptr)
 121 {
 122         struct el_subpacket *el_ptr = (struct el_subpacket *)la_ptr;
 123         char *saved_err_prefix = err_print_prefix;
 124
 125         /*
 126          * Sync the processor
 127          */
 128         mb();
 129         draina();
 130
 131         err_print_prefix = KERN_CRIT;
 132         printk("%s*CPU %s Error (Vector 0x%x) reported on CPU %d\n",
 133                err_print_prefix,
 134                (vector == SCB_Q_PROCERR) ? "Correctable" : "Uncorrectable",
 135                (unsigned int)vector, (int)smp_processor_id());
 136         el_process_subpacket(el_ptr);
 137         err_print_prefix = saved_err_prefix;
 138
 139         /*
 140          * Release the logout frame
 141          */
 142         wrmces(0x7);
 143         mb();
 144 }
 145
 146 static char *el_ev7_processor_subpacket_annotation[] = {
 147         "Subpacket Header",     "I_STAT",       "DC_STAT",
 148         "C_ADDR",               "C_SYNDROME_1", "C_SYNDROME_0",
 149         "C_STAT",               "C_STS",        "MM_STAT",
 150         "EXC_ADDR",             "IER_CM",       "ISUM",
 151         "PAL_BASE",             "I_CTL",        "PROCESS_CONTEXT",
 152         "CBOX_CTL",             "CBOX_STP_CTL", "CBOX_ACC_CTL",
 153         "CBOX_LCL_SET",         "CBOX_GLB_SET", "BBOX_CTL",
 154         "BBOX_ERR_STS",         "BBOX_ERR_IDX", "CBOX_DDP_ERR_STS",
 155         "BBOX_DAT_RMP",         NULL
 156 };
 157
 158 static char *el_ev7_zbox_subpacket_annotation[] = {
 159         "Subpacket Header",
 160         "ZBOX(0): DRAM_ERR_STATUS_2 / DRAM_ERR_STATUS_1",
 161         "ZBOX(0): DRAM_ERROR_CTL    / DRAM_ERR_STATUS_3",
 162         "ZBOX(0): DIFT_TIMEOUT      / DRAM_ERR_ADR",
 163         "ZBOX(0): FRC_ERR_ADR       / DRAM_MAPPER_CTL",
 164         "ZBOX(0): reserved          / DIFT_ERR_STATUS",
 165         "ZBOX(1): DRAM_ERR_STATUS_2 / DRAM_ERR_STATUS_1",
 166         "ZBOX(1): DRAM_ERROR_CTL    / DRAM_ERR_STATUS_3",
 167         "ZBOX(1): DIFT_TIMEOUT      / DRAM_ERR_ADR",
 168         "ZBOX(1): FRC_ERR_ADR       / DRAM_MAPPER_CTL",
 169         "ZBOX(1): reserved          / DIFT_ERR_STATUS",
 170         "CBOX_CTL",             "CBOX_STP_CTL",
 171         "ZBOX(0)_ERROR_PA",     "ZBOX(1)_ERROR_PA",
 172         "ZBOX(0)_ORED_SYNDROME","ZBOX(1)_ORED_SYNDROME",
 173         NULL
 174 };
 175
 176 static char *el_ev7_rbox_subpacket_annotation[] = {
 177         "Subpacket Header",     "RBOX_CFG",     "RBOX_N_CFG",
 178         "RBOX_S_CFG",           "RBOX_E_CFG",   "RBOX_W_CFG",
 179         "RBOX_N_ERR",           "RBOX_S_ERR",   "RBOX_E_ERR",
 180         "RBOX_W_ERR",           "RBOX_IO_CFG",  "RBOX_IO_ERR",
 181         "RBOX_L_ERR",           "RBOX_WHOAMI",  "RBOX_IMASL",
 182         "RBOX_INTQ",            "RBOX_INT",     NULL
 183 };
 184
 185 static char *el_ev7_io_subpacket_annotation[] = {
 186         "Subpacket Header",     "IO_ASIC_REV",  "IO_SYS_REV",
 187         "IO7_UPH",              "HPI_CTL",      "CRD_CTL",
 188         "HEI_CTL",              "PO7_ERROR_SUM","PO7_UNCRR_SYM",
 189         "PO7_CRRCT_SYM",        "PO7_UGBGE_SYM","PO7_ERR_PKT0",
 190         "PO7_ERR_PKT1",         "reserved",     "reserved",
 191         "PO0_ERR_SUM",          "PO0_TLB_ERR",  "PO0_SPL_COMPLT",
 192         "PO0_TRANS_SUM",        "PO0_FIRST_ERR","PO0_MULT_ERR",
 193         "DM CSR PH",            "DM CSR PH",    "DM CSR PH",
 194         "DM CSR PH",            "reserved",
 195         "PO1_ERR_SUM",          "PO1_TLB_ERR",  "PO1_SPL_COMPLT",
 196         "PO1_TRANS_SUM",        "PO1_FIRST_ERR","PO1_MULT_ERR",
 197         "DM CSR PH",            "DM CSR PH",    "DM CSR PH",
 198         "DM CSR PH",            "reserved",
 199         "PO2_ERR_SUM",          "PO2_TLB_ERR",  "PO2_SPL_COMPLT",
 200         "PO2_TRANS_SUM",        "PO2_FIRST_ERR","PO2_MULT_ERR",
 201         "DM CSR PH",            "DM CSR PH",    "DM CSR PH",
 202         "DM CSR PH",            "reserved",
 203         "PO3_ERR_SUM",          "PO3_TLB_ERR",  "PO3_SPL_COMPLT",
 204         "PO3_TRANS_SUM",        "PO3_FIRST_ERR","PO3_MULT_ERR",
 205         "DM CSR PH",            "DM CSR PH",    "DM CSR PH",
 206         "DM CSR PH",            "reserved",
 207         NULL
 208 };
 209
 210 static struct el_subpacket_annotation el_ev7_pal_annotations[] = {
 211         SUBPACKET_ANNOTATION(EL_CLASS__PAL,
 212                              EL_TYPE__PAL__EV7_PROCESSOR,
 213                              1,
 214                              "EV7 Processor Subpacket",
 215                              el_ev7_processor_subpacket_annotation),
 216         SUBPACKET_ANNOTATION(EL_CLASS__PAL,
 217                              EL_TYPE__PAL__EV7_ZBOX,
 218                              1,
 219                              "EV7 ZBOX Subpacket",
 220                              el_ev7_zbox_subpacket_annotation),
 221         SUBPACKET_ANNOTATION(EL_CLASS__PAL,
 222                              EL_TYPE__PAL__EV7_RBOX,
 223                              1,
 224                              "EV7 RBOX Subpacket",
 225                              el_ev7_rbox_subpacket_annotation),
 226         SUBPACKET_ANNOTATION(EL_CLASS__PAL,
 227                              EL_TYPE__PAL__EV7_IO,
 228                              1,
 229                              "EV7 IO Subpacket",
 230                              el_ev7_io_subpacket_annotation)
 231 };
 232
 233 static struct el_subpacket *
 234 ev7_process_pal_subpacket(struct el_subpacket *header)
 235 {
 236         struct ev7_pal_subpacket *packet;
 237
 238         if (header->class != EL_CLASS__PAL) {
 239                 printk("%s  ** Unexpected header CLASS %d TYPE %d, aborting\n",
 240                        err_print_prefix,
 241                        header->class, header->type);
 242                 return NULL;
 243         }
 244
 245         packet = (struct ev7_pal_subpacket *)header->by_type.raw.data_start;
 246
 247         switch(header->type) {
 248         case EL_TYPE__PAL__LOGOUT_FRAME:
 249                 printk("%s*** MCHK occurred on LPID %ld (RBOX %lx)\n",
 250                        err_print_prefix,
 251                        packet->by_type.logout.whami,
 252                        packet->by_type.logout.rbox_whami);
 253                 el_print_timestamp(&packet->by_type.logout.timestamp);
 254                 printk("%s  EXC_ADDR: %016lx\n"
 255                          "  HALT_CODE: %lx\n",
 256                        err_print_prefix,
 257                        packet->by_type.logout.exc_addr,
 258                        packet->by_type.logout.halt_code);
 259                 el_process_subpackets(header,
 260                                       packet->by_type.logout.subpacket_count);
 261                 break;
 262         default:
 263                 printk("%s  ** PAL TYPE %d SUBPACKET\n",
 264                        err_print_prefix,
 265                        header->type);
 266                 el_annotate_subpacket(header);
 267                 break;
 268         }
 269
 270         return (struct el_subpacket *)((unsigned long)header + header->length);
 271 }
 272
 273 struct el_subpacket_handler ev7_pal_subpacket_handler =
 274         SUBPACKET_HANDLER_INIT(EL_CLASS__PAL, ev7_process_pal_subpacket);
 275
 276 void __init
 277 ev7_register_error_handlers(void)
 278 {
 279         int i;
 280
 281         for (i = 0; i < ARRAY_SIZE(el_ev7_pal_annotations); i++)
 282                 cdl_register_subpacket_annotation(&el_ev7_pal_annotations[i]);
 283
 284         cdl_register_subpacket_handler(&ev7_pal_subpacket_handler);
 285 }
 286