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 20 int 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 49 void 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 56 void arch_apei_flush_tlb_one(unsigned long addr) 57 { 58 __flush_tlb_one(addr); 59 } 60