| Felix Held | 2ecf156 | 2021-07-14 00:30:53 +0200 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | #include <amdblocks/mca.h> |
| 4 | #include <amdblocks/msr_zen.h> |
| 5 | #include <cpu/x86/msr.h> |
| 6 | #include <acpi/acpi.h> |
| 7 | #include <console/console.h> |
| 8 | #include <arch/bert_storage.h> |
| 9 | #include <cper.h> |
| 10 | #include <types.h> |
| 11 | |
| 12 | /* MISC4 is the last used register in the MCAX banks of Picasso */ |
| 13 | #define MCAX_USED_REGISTERS_PER_BANK (MCAX_MISC4_OFFSET + 1) |
| 14 | |
| 15 | static inline size_t mca_report_size_reqd(void) |
| 16 | { |
| 17 | size_t size; |
| 18 | |
| 19 | size = sizeof(acpi_generic_error_status_t); |
| 20 | |
| 21 | size += sizeof(acpi_hest_generic_data_v300_t); |
| 22 | size += sizeof(cper_proc_generic_error_section_t); |
| 23 | |
| 24 | size += sizeof(acpi_hest_generic_data_v300_t); |
| 25 | size += sizeof(cper_ia32x64_proc_error_section_t); |
| 26 | |
| 27 | /* Check Error */ |
| 28 | size += cper_ia32x64_check_sz(); |
| 29 | |
| 30 | /* Context of MCG_CAP, MCG_STAT, MCG_CTL */ |
| 31 | size += cper_ia32x64_ctx_sz_bytype(CPER_IA32X64_CTX_MSR, 3); |
| 32 | |
| 33 | /* Context of CTL, STATUS, ADDR, MISC0, CONFIG, IPID, SYND, RESERVED, DESTAT, DEADDR, |
| 34 | MISC1, MISC2, MISC3, MISC4 */ |
| 35 | size += cper_ia32x64_ctx_sz_bytype(CPER_IA32X64_CTX_MSR, MCAX_USED_REGISTERS_PER_BANK); |
| 36 | |
| 37 | /* Context of CTL_MASK */ |
| 38 | size += cper_ia32x64_ctx_sz_bytype(CPER_IA32X64_CTX_MSR, 1); |
| 39 | |
| 40 | return size; |
| 41 | } |
| 42 | |
| 43 | static enum cper_x86_check_type error_to_chktype(struct mca_bank_status *mci) |
| 44 | { |
| 45 | int error = mca_err_type(mci->sts); |
| 46 | |
| 47 | if (error == MCA_ERRTYPE_BUS) |
| 48 | return X86_PROCESSOR_BUS_CHK; |
| 49 | if (error == MCA_ERRTYPE_INT) |
| 50 | return X86_PROCESSOR_MS_CHK; |
| 51 | if (error == MCA_ERRTYPE_MEM) |
| 52 | return X86_PROCESSOR_CACHE_CHK; |
| 53 | if (error == MCA_ERRTYPE_TLB) |
| 54 | return X86_PROCESSOR_TLB_CHK; |
| 55 | |
| 56 | return X86_PROCESSOR_MS_CHK; /* unrecognized */ |
| 57 | } |
| 58 | |
| 59 | /* Fill additional information in the Generic Processor Error Section. */ |
| 60 | static void fill_generic_section(cper_proc_generic_error_section_t *sec, |
| 61 | struct mca_bank_status *mci) |
| 62 | { |
| 63 | int type = mca_err_type(mci->sts); |
| 64 | |
| 65 | if (type == MCA_ERRTYPE_BUS) /* try to map MCA errors to CPER types */ |
| 66 | sec->error_type = GENPROC_ERRTYPE_BUS; |
| 67 | else if (type == MCA_ERRTYPE_INT) |
| 68 | sec->error_type = GENPROC_ERRTYPE_UARCH; |
| 69 | else if (type == MCA_ERRTYPE_MEM) |
| 70 | sec->error_type = GENPROC_ERRTYPE_CACHE; |
| 71 | else if (type == MCA_ERRTYPE_TLB) |
| 72 | sec->error_type = GENPROC_ERRTYPE_TLB; |
| 73 | else |
| 74 | sec->error_type = GENPROC_ERRTYPE_UNKNOWN; |
| 75 | sec->validation |= GENPROC_VALID_PROC_ERR_TYPE; |
| 76 | } |
| 77 | |
| 78 | /* Convert an error reported by an MCA bank into BERT information to be reported |
| 79 | * by the OS. The ACPI driver doesn't recognize/parse the IA32/X64 structure, |
| 80 | * which is the best method to report MSR context. As a result, add two |
| 81 | * structures: A "processor generic error" that is parsed, and an IA32/X64 one |
| 82 | * to capture complete information. |
| 83 | */ |
| 84 | void build_bert_mca_error(struct mca_bank_status *mci) |
| 85 | { |
| 86 | acpi_generic_error_status_t *status; |
| 87 | acpi_hest_generic_data_v300_t *gen_entry; |
| 88 | acpi_hest_generic_data_v300_t *x86_entry; |
| 89 | cper_proc_generic_error_section_t *gen_sec; |
| 90 | cper_ia32x64_proc_error_section_t *x86_sec; |
| 91 | cper_ia32x64_proc_error_info_t *chk; |
| 92 | cper_ia32x64_context_t *ctx; |
| 93 | |
| 94 | if (mca_report_size_reqd() > bert_storage_remaining()) |
| 95 | goto failed; |
| 96 | |
| 97 | status = bert_new_event(&CPER_SEC_PROC_GENERIC_GUID); |
| 98 | if (!status) |
| 99 | goto failed; |
| 100 | |
| 101 | gen_entry = acpi_hest_generic_data3(status); |
| 102 | gen_sec = section_of_acpientry(gen_sec, gen_entry); |
| 103 | |
| 104 | fill_generic_section(gen_sec, mci); |
| 105 | |
| 106 | x86_entry = bert_append_ia32x64(status); |
| 107 | x86_sec = section_of_acpientry(x86_sec, x86_entry); |
| 108 | |
| 109 | chk = new_cper_ia32x64_check(status, x86_sec, error_to_chktype(mci)); |
| 110 | if (!chk) |
| 111 | goto failed; |
| 112 | |
| 113 | ctx = cper_new_ia32x64_context_msr(status, x86_sec, IA32_MCG_CAP, 3); |
| 114 | if (!ctx) |
| 115 | goto failed; |
| 116 | ctx = cper_new_ia32x64_context_msr(status, x86_sec, MCAX_CTL_MSR(mci->bank), |
| 117 | MCAX_USED_REGISTERS_PER_BANK); |
| 118 | if (!ctx) |
| 119 | goto failed; |
| 120 | ctx = cper_new_ia32x64_context_msr(status, x86_sec, MCA_CTL_MASK_MSR(mci->bank), 1); |
| 121 | if (!ctx) |
| 122 | goto failed; |
| 123 | |
| 124 | return; |
| 125 | |
| 126 | failed: |
| 127 | /* We're here because of a hardware error, don't break something else */ |
| 128 | printk(BIOS_ERR, "Error: Not enough room in BERT region for Machine Check error\n"); |
| 129 | } |