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Tsirkin" , Ani Sinha , Dongjiu Geng , linux-kernel@vger.kernel.org, qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH 09/15] acpi/ghes: make the GHES record generation more generic Date: Wed, 25 Sep 2024 06:04:14 +0200 Message-ID: <9b256923695e2202f549cbbb11dc22982cb22abf.1727236561.git.mchehab+huawei@kernel.org> X-Mailer: git-send-email 2.46.1 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=147.75.193.91; envelope-from=mchehab+huawei@kernel.org; helo=nyc.source.kernel.org X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.09, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Split the code into separate functions to allow using the common CPER filling code by different error sources. The generic code was moved to ghes_record_cper_errors(), and ghes_gen_err_data_uncorrectable_recoverable() now contains only a logic to fill GEGB part of the record. The remaining code to generate a memory error now belongs to acpi_ghes_record_errors() function. A further patch will give it a better name. Signed-off-by: Mauro Carvalho Chehab --- hw/acpi/ghes.c | 118 +++++++++++++++++++++++++---------------- include/hw/acpi/ghes.h | 3 ++ 2 files changed, 74 insertions(+), 47 deletions(-) diff --git a/hw/acpi/ghes.c b/hw/acpi/ghes.c index 340a0263faf8..307b5a41d539 100644 --- a/hw/acpi/ghes.c +++ b/hw/acpi/ghes.c @@ -181,51 +181,30 @@ static void acpi_ghes_build_append_mem_cper(GArray *table, build_append_int_noprefix(table, 0, 7); } -static int acpi_ghes_record_mem_error(uint64_t error_block_address, - uint64_t error_physical_addr) +static void +ghes_gen_err_data_uncorrectable_recoverable(GArray *block, + const uint8_t *section_type, + int data_length) { - GArray *block; - - /* Memory Error Section Type */ - const uint8_t uefi_cper_mem_sec[] = - UUID_LE(0xA5BC1114, 0x6F64, 0x4EDE, 0xB8, 0x63, 0x3E, 0x83, \ - 0xED, 0x7C, 0x83, 0xB1); - /* invalid fru id: ACPI 4.0: 17.3.2.6.1 Generic Error Data, * Table 17-13 Generic Error Data Entry */ QemuUUID fru_id = {}; - uint32_t data_length; - block = g_array_new(false, true /* clear */, 1); - - /* This is the length if adding a new generic error data entry*/ - data_length = ACPI_GHES_DATA_LENGTH + ACPI_GHES_MEM_CPER_LENGTH; /* - * It should not run out of the preallocated memory if adding a new generic - * error data entry + * Calculate the size with this block. No need to check for + * too big CPER, as CPER size is checked at ghes_record_cper_errors() */ - assert((data_length + ACPI_GHES_GESB_SIZE) <= - ACPI_GHES_MAX_RAW_DATA_LENGTH); + data_length += ACPI_GHES_GESB_SIZE; /* Build the new generic error status block header */ acpi_ghes_generic_error_status(block, ACPI_GEBS_UNCORRECTABLE, 0, 0, data_length, ACPI_CPER_SEV_RECOVERABLE); /* Build this new generic error data entry header */ - acpi_ghes_generic_error_data(block, uefi_cper_mem_sec, + acpi_ghes_generic_error_data(block, section_type, ACPI_CPER_SEV_RECOVERABLE, 0, 0, ACPI_GHES_MEM_CPER_LENGTH, fru_id, 0); - - /* Build the memory section CPER for above new generic error data entry */ - acpi_ghes_build_append_mem_cper(block, error_physical_addr); - - /* Write the generic error data entry into guest memory */ - cpu_physical_memory_write(error_block_address, block->data, block->len); - - g_array_free(block, true); - - return 0; } /* @@ -399,14 +378,19 @@ void acpi_ghes_add_fw_cfg(AcpiGhesState *ags, FWCfgState *s, ags->present = true; } -int acpi_ghes_record_errors(uint16_t source_id, uint64_t physical_address) +void ghes_record_cper_errors(const void *cper, size_t len, + uint16_t source_id, Error **errp) { uint64_t error_block_addr, read_ack_register_addr, read_ack_register = 0; uint64_t start_addr; - bool ret = -1; AcpiGedState *acpi_ged_state; AcpiGhesState *ags; + if (len > ACPI_GHES_MAX_RAW_DATA_LENGTH) { + error_setg(errp, "GHES CPER record is too big: %ld", len); + return; + } + acpi_ged_state = ACPI_GED(object_resolve_path_type("", TYPE_ACPI_GED, NULL)); g_assert(acpi_ged_state); @@ -422,6 +406,10 @@ int acpi_ghes_record_errors(uint16_t source_id, uint64_t physical_address) sizeof(error_block_addr)); error_block_addr = le64_to_cpu(error_block_addr); + if (!error_block_addr) { + error_setg(errp, "can not find Generic Error Status Block"); + return; + } /* * As the current version supports only one source, the ack offset is @@ -434,24 +422,60 @@ int acpi_ghes_record_errors(uint16_t source_id, uint64_t physical_address) /* zero means OSPM does not acknowledge the error */ if (!read_ack_register) { - error_report("OSPM does not acknowledge previous error," - " so can not record CPER for current error anymore"); - } else if (error_block_addr) { - read_ack_register = cpu_to_le64(0); - /* - * Clear the Read Ack Register, OSPM will write it to 1 when - * it acknowledges this error. - */ - cpu_physical_memory_write(read_ack_register_addr, - &read_ack_register, sizeof(uint64_t)); - - ret = acpi_ghes_record_mem_error(error_block_addr, - physical_address); - } else { - error_report("can not find Generic Error Status Block"); + error_setg(errp, + "OSPM does not acknowledge previous error," + " so can not record CPER for current error anymore"); + return; } - return ret; + read_ack_register = cpu_to_le64(0); + /* + * Clear the Read Ack Register, OSPM will write it to 1 when + * it acknowledges this error. + */ + cpu_physical_memory_write(read_ack_register_addr, + &read_ack_register, sizeof(uint64_t)); + + /* Write the generic error data entry into guest memory */ + cpu_physical_memory_write(error_block_addr, cper, len); + + return; +} + +int acpi_ghes_record_errors(uint16_t source_id, uint64_t physical_address) +{ + /* Memory Error Section Type */ + const uint8_t guid[] = + UUID_LE(0xA5BC1114, 0x6F64, 0x4EDE, 0xB8, 0x63, 0x3E, 0x83, \ + 0xED, 0x7C, 0x83, 0xB1); + Error *errp = NULL; + GArray *block; + + if (!physical_address) { + error_report("can not find Generic Error Status Block for source id %d", + source_id); + return -1; + } + + block = g_array_new(false, true /* clear */, 1); + + ghes_gen_err_data_uncorrectable_recoverable(block, guid, + ACPI_GHES_MAX_RAW_DATA_LENGTH); + + /* Build the memory section CPER for above new generic error data entry */ + acpi_ghes_build_append_mem_cper(block, physical_address); + + /* Report the error */ + ghes_record_cper_errors(block->data, block->len, source_id, &errp); + + g_array_free(block, true); + + if (errp) { + error_report_err(errp); + return -1; + } + + return 0; } bool acpi_ghes_present(void) diff --git a/include/hw/acpi/ghes.h b/include/hw/acpi/ghes.h index d6e2801d9cd9..1b988ac1e2f2 100644 --- a/include/hw/acpi/ghes.h +++ b/include/hw/acpi/ghes.h @@ -23,6 +23,7 @@ #define ACPI_GHES_H #include "hw/acpi/bios-linker-loader.h" +#include "qapi/error.h" /* * Values for Hardware Error Notification Type field @@ -80,6 +81,8 @@ void acpi_build_hest(GArray *table_data, GArray *hardware_errors, const char *oem_id, const char *oem_table_id); void acpi_ghes_add_fw_cfg(AcpiGhesState *vms, FWCfgState *s, GArray *hardware_errors); +void ghes_record_cper_errors(const void *cper, size_t len, + uint16_t source_id, Error **errp); int acpi_ghes_record_errors(uint16_t source_id, uint64_t error_physical_addr); /**