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

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Arch-specific APEI-related functions.
   4 */
   5
   6#include <acpi/apei.h>
   7
   8#include <asm/mce.h>
   9#include <asm/tlbflush.h>
  10
  11int arch_apei_enable_cmcff(struct acpi_hest_header *hest_hdr, void *data)
  12{
  13#ifdef CONFIG_X86_MCE
  14        int i;
  15        struct acpi_hest_ia_corrected *cmc;
  16        struct acpi_hest_ia_error_bank *mc_bank;
  17
  18        cmc = (struct acpi_hest_ia_corrected *)hest_hdr;
  19        if (!cmc->enabled)
  20                return 0;
  21
  22        /*
  23         * We expect HEST to provide a list of MC banks that report errors
  24         * in firmware first mode. Otherwise, return non-zero value to
  25         * indicate that we are done parsing HEST.
  26         */
  27        if (!(cmc->flags & ACPI_HEST_FIRMWARE_FIRST) ||
  28            !cmc->num_hardware_banks)
  29                return 1;
  30
  31        pr_info("HEST: Enabling Firmware First mode for corrected errors.\n");
  32
  33        mc_bank = (struct acpi_hest_ia_error_bank *)(cmc + 1);
  34        for (i = 0; i < cmc->num_hardware_banks; i++, mc_bank++)
  35                mce_disable_bank(mc_bank->bank_number);
  36#endif
  37        return 1;
  38}
  39
  40void arch_apei_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
  41{
  42#ifdef CONFIG_X86_MCE
  43        apei_mce_report_mem_error(sev, mem_err);
  44#endif
  45}
  46
  47int arch_apei_report_x86_error(struct cper_ia_proc_ctx *ctx_info, u64 lapic_id)
  48{
  49        return apei_smca_report_x86_error(ctx_info, lapic_id);
  50}
  51