err_ev7.c

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/*
 *  linux/arch/alpha/kernel/err_ev7.c
 *
 *  Copyright (C) 2000 Jeff Wiedemeier (Compaq Computer Corporation)
 *
 *  Error handling code supporting Alpha systems
 */

#include <linux/init.h>
#include <linux/sched.h>

#include <asm/io.h>
#include <asm/hwrpb.h>
#include <asm/smp.h>
#include <asm/err_common.h>
#include <asm/err_ev7.h>

#include "err_impl.h"
#include "proto.h"

struct ev7_lf_subpackets *
ev7_collect_logout_frame_subpackets(struct el_subpacket *el_ptr,
                    struct ev7_lf_subpackets *lf_subpackets)
{
    struct el_subpacket *subpacket;
    int i;

    /*
     * A Marvel machine check frame is always packaged in an
     * el_subpacket of class HEADER, type LOGOUT_FRAME.
     */
    if (el_ptr->class != EL_CLASS__HEADER || 
        el_ptr->type != EL_TYPE__HEADER__LOGOUT_FRAME)
        return NULL;

    /*
     * It is a logout frame header. Look at the one subpacket.
     */
    el_ptr = (struct el_subpacket *)
        ((unsigned long)el_ptr + el_ptr->length);

    /*
     * It has to be class PAL, type LOGOUT_FRAME.
     */
    if (el_ptr->class != EL_CLASS__PAL ||
        el_ptr->type != EL_TYPE__PAL__LOGOUT_FRAME)
        return NULL;

    lf_subpackets->logout = (struct ev7_pal_logout_subpacket *)
        el_ptr->by_type.raw.data_start;

    /*
     * Process the subpackets.
     */
    subpacket = (struct el_subpacket *)
        ((unsigned long)el_ptr + el_ptr->length);
    for (i = 0;
         subpacket && i < lf_subpackets->logout->subpacket_count;
         subpacket = (struct el_subpacket *)
             ((unsigned long)subpacket + subpacket->length), i++) {
        /*
         * All subpackets should be class PAL.
         */
        if (subpacket->class != EL_CLASS__PAL) {
            printk("%s**UNEXPECTED SUBPACKET CLASS %d "
                   "IN LOGOUT FRAME (packet %d\n",
                   err_print_prefix, subpacket->class, i);
            return NULL;
        }

        /*
         * Remember the subpacket.
         */
        switch(subpacket->type) {
        case EL_TYPE__PAL__EV7_PROCESSOR:
            lf_subpackets->ev7 =
                (struct ev7_pal_processor_subpacket *)
                subpacket->by_type.raw.data_start;
            break;

        case EL_TYPE__PAL__EV7_RBOX:
            lf_subpackets->rbox = (struct ev7_pal_rbox_subpacket *)
                subpacket->by_type.raw.data_start;
            break;

        case EL_TYPE__PAL__EV7_ZBOX:
            lf_subpackets->zbox = (struct ev7_pal_zbox_subpacket *)
                subpacket->by_type.raw.data_start;
            break;

        case EL_TYPE__PAL__EV7_IO:
            lf_subpackets->io = (struct ev7_pal_io_subpacket *)
                subpacket->by_type.raw.data_start;
            break;

        case EL_TYPE__PAL__ENV__AMBIENT_TEMPERATURE:
        case EL_TYPE__PAL__ENV__AIRMOVER_FAN:
        case EL_TYPE__PAL__ENV__VOLTAGE:
        case EL_TYPE__PAL__ENV__INTRUSION:
        case EL_TYPE__PAL__ENV__POWER_SUPPLY:
        case EL_TYPE__PAL__ENV__LAN:
        case EL_TYPE__PAL__ENV__HOT_PLUG:
            lf_subpackets->env[ev7_lf_env_index(subpacket->type)] =
                (struct ev7_pal_environmental_subpacket *)
                subpacket->by_type.raw.data_start;
            break;
                
        default:
            /*
             * Don't know what kind of frame this is.
             */
            return NULL;
        }
    }

    return lf_subpackets;
}

void
ev7_machine_check(unsigned long vector, unsigned long la_ptr)
{
    struct el_subpacket *el_ptr = (struct el_subpacket *)la_ptr;
    char *saved_err_prefix = err_print_prefix;

    /*
     * Sync the processor
     */
    mb();
    draina();

    err_print_prefix = KERN_CRIT;
    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());
    el_process_subpacket(el_ptr);
    err_print_prefix = saved_err_prefix;

    /* 
     * Release the logout frame 
     */
    wrmces(0x7);
    mb();
}

static char *el_ev7_processor_subpacket_annotation[] = {
    "Subpacket Header", "I_STAT",   "DC_STAT",
    "C_ADDR",       "C_SYNDROME_1", "C_SYNDROME_0",
    "C_STAT",       "C_STS",    "MM_STAT",
    "EXC_ADDR",     "IER_CM",   "ISUM",
    "PAL_BASE",     "I_CTL",    "PROCESS_CONTEXT",
    "CBOX_CTL",     "CBOX_STP_CTL", "CBOX_ACC_CTL",
    "CBOX_LCL_SET",     "CBOX_GLB_SET", "BBOX_CTL",
    "BBOX_ERR_STS",     "BBOX_ERR_IDX", "CBOX_DDP_ERR_STS",
    "BBOX_DAT_RMP",     NULL
};

static char *el_ev7_zbox_subpacket_annotation[] = {
    "Subpacket Header",     
    "ZBOX(0): DRAM_ERR_STATUS_2 / DRAM_ERR_STATUS_1",
    "ZBOX(0): DRAM_ERROR_CTL    / DRAM_ERR_STATUS_3",
    "ZBOX(0): DIFT_TIMEOUT      / DRAM_ERR_ADR",
    "ZBOX(0): FRC_ERR_ADR       / DRAM_MAPPER_CTL",
    "ZBOX(0): reserved          / DIFT_ERR_STATUS",
    "ZBOX(1): DRAM_ERR_STATUS_2 / DRAM_ERR_STATUS_1",
    "ZBOX(1): DRAM_ERROR_CTL    / DRAM_ERR_STATUS_3",
    "ZBOX(1): DIFT_TIMEOUT      / DRAM_ERR_ADR",
    "ZBOX(1): FRC_ERR_ADR       / DRAM_MAPPER_CTL",
    "ZBOX(1): reserved          / DIFT_ERR_STATUS",
    "CBOX_CTL",     "CBOX_STP_CTL",
    "ZBOX(0)_ERROR_PA", "ZBOX(1)_ERROR_PA",
    "ZBOX(0)_ORED_SYNDROME","ZBOX(1)_ORED_SYNDROME",
    NULL
};

static char *el_ev7_rbox_subpacket_annotation[] = {
    "Subpacket Header", "RBOX_CFG", "RBOX_N_CFG",
    "RBOX_S_CFG",       "RBOX_E_CFG",   "RBOX_W_CFG",
    "RBOX_N_ERR",       "RBOX_S_ERR",   "RBOX_E_ERR",
    "RBOX_W_ERR",       "RBOX_IO_CFG",  "RBOX_IO_ERR",
    "RBOX_L_ERR",       "RBOX_WHOAMI",  "RBOX_IMASL",
    "RBOX_INTQ",        "RBOX_INT", NULL
};

static char *el_ev7_io_subpacket_annotation[] = {
    "Subpacket Header", "IO_ASIC_REV",  "IO_SYS_REV",
    "IO7_UPH",      "HPI_CTL",  "CRD_CTL",
    "HEI_CTL",      "PO7_ERROR_SUM","PO7_UNCRR_SYM",
    "PO7_CRRCT_SYM",    "PO7_UGBGE_SYM","PO7_ERR_PKT0",
    "PO7_ERR_PKT1",     "reserved", "reserved",
    "PO0_ERR_SUM",      "PO0_TLB_ERR",  "PO0_SPL_COMPLT",
    "PO0_TRANS_SUM",    "PO0_FIRST_ERR","PO0_MULT_ERR",
    "DM CSR PH",        "DM CSR PH",    "DM CSR PH",
    "DM CSR PH",        "reserved",
    "PO1_ERR_SUM",      "PO1_TLB_ERR",  "PO1_SPL_COMPLT",
    "PO1_TRANS_SUM",    "PO1_FIRST_ERR","PO1_MULT_ERR",
    "DM CSR PH",        "DM CSR PH",    "DM CSR PH",
    "DM CSR PH",        "reserved",
    "PO2_ERR_SUM",      "PO2_TLB_ERR",  "PO2_SPL_COMPLT",
    "PO2_TRANS_SUM",    "PO2_FIRST_ERR","PO2_MULT_ERR",
    "DM CSR PH",        "DM CSR PH",    "DM CSR PH",
    "DM CSR PH",        "reserved",
    "PO3_ERR_SUM",      "PO3_TLB_ERR",  "PO3_SPL_COMPLT",
    "PO3_TRANS_SUM",    "PO3_FIRST_ERR","PO3_MULT_ERR",
    "DM CSR PH",        "DM CSR PH",    "DM CSR PH",
    "DM CSR PH",        "reserved", 
    NULL
};
    
static struct el_subpacket_annotation el_ev7_pal_annotations[] = {
    SUBPACKET_ANNOTATION(EL_CLASS__PAL,
                 EL_TYPE__PAL__EV7_PROCESSOR,
                 1,
                 "EV7 Processor Subpacket",
                 el_ev7_processor_subpacket_annotation),
    SUBPACKET_ANNOTATION(EL_CLASS__PAL,
                 EL_TYPE__PAL__EV7_ZBOX,
                 1,
                 "EV7 ZBOX Subpacket",
                 el_ev7_zbox_subpacket_annotation),
    SUBPACKET_ANNOTATION(EL_CLASS__PAL,
                 EL_TYPE__PAL__EV7_RBOX,
                 1,
                 "EV7 RBOX Subpacket",
                 el_ev7_rbox_subpacket_annotation),
    SUBPACKET_ANNOTATION(EL_CLASS__PAL,
                 EL_TYPE__PAL__EV7_IO,
                 1,
                 "EV7 IO Subpacket",
                 el_ev7_io_subpacket_annotation)
};

static struct el_subpacket *
ev7_process_pal_subpacket(struct el_subpacket *header)
{
    struct ev7_pal_subpacket *packet;

    if (header->class != EL_CLASS__PAL) {
        printk("%s  ** Unexpected header CLASS %d TYPE %d, aborting\n",
               err_print_prefix,
               header->class, header->type);
        return NULL;
    }

    packet = (struct ev7_pal_subpacket *)header->by_type.raw.data_start;

    switch(header->type) {
    case EL_TYPE__PAL__LOGOUT_FRAME:
        printk("%s*** MCHK occurred on LPID %lld (RBOX %llx)\n",
               err_print_prefix,
               packet->by_type.logout.whami, 
               packet->by_type.logout.rbox_whami);
        el_print_timestamp(&packet->by_type.logout.timestamp);
        printk("%s  EXC_ADDR: %016llx\n"
                 "  HALT_CODE: %llx\n",
               err_print_prefix,
               packet->by_type.logout.exc_addr,
               packet->by_type.logout.halt_code);
        el_process_subpackets(header,
                                      packet->by_type.logout.subpacket_count);
        break;
    default:
        printk("%s  ** PAL TYPE %d SUBPACKET\n", 
               err_print_prefix,
               header->type);
        el_annotate_subpacket(header);
        break;
    }
    
    return (struct el_subpacket *)((unsigned long)header + header->length);
}

struct el_subpacket_handler ev7_pal_subpacket_handler =
    SUBPACKET_HANDLER_INIT(EL_CLASS__PAL, ev7_process_pal_subpacket);

void __init
ev7_register_error_handlers(void)
{
    int i;

    for (i = 0; i < ARRAY_SIZE(el_ev7_pal_annotations); i++)
        cdl_register_subpacket_annotation(&el_ev7_pal_annotations[i]);

    cdl_register_subpacket_handler(&ev7_pal_subpacket_handler);
}