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
  11 int 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
  40 void 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
  47 int 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 }