LXR linux/arch/x86/kernel/acpi/apei.c

   1/*
   2 * Arch-specific APEI-related functions.
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License as published by
   6 * the Free Software Foundation; either version 2 of the License, or
   7 * (at your option) any later version.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 */
  14
  15#include <acpi/apei.h>
  16
  17#include <asm/mce.h>
  18#include <asm/tlbflush.h>
  19
  20int arch_apei_enable_cmcff(struct acpi_hest_header *hest_hdr, void *data)
  21{
  22#ifdef CONFIG_X86_MCE
  23        int i;
  24        struct acpi_hest_ia_corrected *cmc;
  25        struct acpi_hest_ia_error_bank *mc_bank;
  26
  27        cmc = (struct acpi_hest_ia_corrected *)hest_hdr;
  28        if (!cmc->enabled)
  29                return 0;
  30
  31        /*
  32         * We expect HEST to provide a list of MC banks that report errors
  33         * in firmware first mode. Otherwise, return non-zero value to
  34         * indicate that we are done parsing HEST.
  35         */
  36        if (!(cmc->flags & ACPI_HEST_FIRMWARE_FIRST) ||
  37            !cmc->num_hardware_banks)
  38                return 1;
  39
  40        pr_info("HEST: Enabling Firmware First mode for corrected errors.\n");
  41
  42        mc_bank = (struct acpi_hest_ia_error_bank *)(cmc + 1);
  43        for (i = 0; i < cmc->num_hardware_banks; i++, mc_bank++)
  44                mce_disable_bank(mc_bank->bank_number);
  45#endif
  46        return 1;
  47}
  48
  49void arch_apei_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
  50{
  51#ifdef CONFIG_X86_MCE
  52        apei_mce_report_mem_error(sev, mem_err);
  53#endif
  54}
  55