// SPDX-License-Identifier: GPL-2.0
/*
 * 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);
}