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Message-ID: <e3e5f093e97508a1e668f90203d6ef0c496d0dc1.1727766088.git.mchehab+huawei@kernel.org>
Date: Tue, 1 Oct 2024 09:03:46 +0200
From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To: Igor Mammedov <imammedo@...hat.com>
Cc: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
"Michael S. Tsirkin" <mst@...hat.com>,
Ani Sinha <anisinha@...hat.com>,
Dongjiu Geng <gengdongjiu1@...il.com>,
linux-kernel@...r.kernel.org,
qemu-arm@...gnu.org,
qemu-devel@...gnu.org
Subject: [PATCH v2 09/15] acpi/ghes: make the GHES record generation more generic
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 <mchehab+huawei@...nel.org>
---
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 f3d0283beb3b..628fa9b22f4b 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);
/**
--
2.46.0
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