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	mce_save_apei_thr_limit(cmc->notify.error_threshold_value);
23
24	/*
25	 * We expect HEST to provide a list of MC banks that report errors
26	 * in firmware first mode. Otherwise, return non-zero value to
27	 * indicate that we are done parsing HEST.
28	 */
29	if (!(cmc->flags & ACPI_HEST_FIRMWARE_FIRST) ||
30	    !cmc->num_hardware_banks)
31		return 1;
32
33	pr_info("HEST: Enabling Firmware First mode for corrected errors.\n");
34
35	mc_bank = (struct acpi_hest_ia_error_bank *)(cmc + 1);
36	for (i = 0; i < cmc->num_hardware_banks; i++, mc_bank++)
37		mce_disable_bank(mc_bank->bank_number);
38#endif
39	return 1;
40}
41
42void arch_apei_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
43{
44#ifdef CONFIG_X86_MCE
45	apei_mce_report_mem_error(sev, mem_err);
46#endif
47}
48
49int arch_apei_report_x86_error(struct cper_ia_proc_ctx *ctx_info, u64 lapic_id)
50{
51	return apei_smca_report_x86_error(ctx_info, lapic_id);
52}