Em Thu, 14 Nov 2019 21:39:14 +0800
Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> escreveu:
> CCIX defines a number of different error types
> (See CCIX spec 1.0) and UEFI 2.8 defines a CPER record to allow
> for them to be reported when firmware first handling is in use.
> The last part of that record is a copy of the CCIX protocol
> error record which can provide very detailed information.
>
> This patch introduces infrastructure and support for one of those
> error types, CCIX Memory Errors. Later patches will supply
> equivalent support for the other error types.
>
> The variable length and content of the different messages makes
> a single tracepoint impractical. As such the RAS tracepoint introduced
> in this patch only covers the memory error. Additional trace points
> will be introduced for other error types along with their
> cper handling in the rest of this series.
>
> Updated RAS daemon support to be posted shortly.
> qemu injection patches also available but not currently planing
> to upstream those.
>
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
> ---
>
> Changes since v4
> * Fixed length array parameters
> * Take advantage of being first print to string and simplify code.
> * Fix buffer overflow risk in snprintf calls.
>
> drivers/acpi/apei/Kconfig | 8 +
> drivers/acpi/apei/ghes.c | 39 ++++
> drivers/firmware/efi/Kconfig | 5 +
> drivers/firmware/efi/Makefile | 1 +
> drivers/firmware/efi/cper-ccix.c | 362 +++++++++++++++++++++++++++++++
> drivers/firmware/efi/cper.c | 6 +
> include/linux/cper.h | 118 ++++++++++
> include/ras/ras_event.h | 79 +++++++
> 8 files changed, 618 insertions(+)
>
> diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig
> index 6b18f8bc7be3..e687b18dee34 100644
> --- a/drivers/acpi/apei/Kconfig
> +++ b/drivers/acpi/apei/Kconfig
> @@ -68,3 +68,11 @@ config ACPI_APEI_ERST_DEBUG
> error information to and from a persistent store. Enable this
> if you want to debugging and testing the ERST kernel support
> and firmware implementation.
> +
> +config ACPI_APEI_CCIX
> + bool "APEI CCIX error recovery support"
> + depends on ACPI_APEI && MEMORY_FAILURE
> + help
> + CCIX has a number of defined error types. This option enables
> + the handling of CPER records generated by a firmware performing
> + firmware first error handling of these CCIX errors.
> diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
> index 777f6f7122b4..75a177ae9de3 100644
> --- a/drivers/acpi/apei/ghes.c
> +++ b/drivers/acpi/apei/ghes.c
> @@ -490,6 +490,42 @@ static void ghes_handle_aer(struct acpi_hest_generic_data *gdata)
> #endif
> }
>
> +static void ghes_handle_ccix_per(struct acpi_hest_generic_data *gdata, int sev)
> +{
> +#ifdef CONFIG_ACPI_APEI_CCIX
> + struct cper_sec_ccix_header *header = acpi_hest_get_payload(gdata);
> + __u32 *dw;
> + enum ccix_per_type per_type;
> + static u32 err_seq;
> + void *payload;
> +
> + /* Check if space for CCIX CPER header and 8 DW of a PER log header */
> + if (gdata->error_data_length <
> + sizeof(*header) + CCIX_PER_LOG_HEADER_DWS * sizeof(__u32))
> + return;
> +
> + if ((header->validation_bits & CPER_CCIX_VALID_PER_LOG) == 0)
> + return;
> +
> + dw = (__u32 *)(header + 1);
> +
> + per_type = FIELD_GET(CCIX_PER_LOG_DW1_PER_TYPE_M, dw[1]);
> + payload = acpi_hest_get_payload(gdata);
> +
> + switch (per_type) {
> + case CCIX_MEMORY_ERROR:
> + trace_ccix_memory_error_event(payload, err_seq, sev,
> + ccix_mem_err_ven_len_get(payload));
> + break;
> + default:
> + /* Unknown error type */
> + pr_info("CCIX error of unknown or vendor defined type\n");
Hmm... maybe this could generate a trace too.
On another matter, IMHO, it would make sense to add the value of "per_type"
at the error message, as this can be a lot helpful if this part of the code
is ever reached.
> + break;
> + }
> + err_seq++;
> +#endif
> +}
> +
> static void ghes_do_proc(struct ghes *ghes,
> const struct acpi_hest_generic_status *estatus)
> {
> @@ -520,6 +556,9 @@ static void ghes_do_proc(struct ghes *ghes,
> else if (guid_equal(sec_type, &CPER_SEC_PCIE)) {
> ghes_handle_aer(gdata);
> }
> + else if (guid_equal(sec_type, &CPER_SEC_CCIX)) {
> + ghes_handle_ccix_per(gdata, estatus->error_severity);
> + }
> else if (guid_equal(sec_type, &CPER_SEC_PROC_ARM)) {
> struct cper_sec_proc_arm *err = acpi_hest_get_payload(gdata);
>
> diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
> index b248870a9806..096e693a9522 100644
> --- a/drivers/firmware/efi/Kconfig
> +++ b/drivers/firmware/efi/Kconfig
> @@ -209,6 +209,11 @@ config UEFI_CPER_X86
> depends on UEFI_CPER && X86
> default y
>
> +config UEFI_CPER_CCIX
> + bool
> + depends on UEFI_CPER
> + default y
> +
> config EFI_DEV_PATH_PARSER
> bool
> depends on ACPI
> diff --git a/drivers/firmware/efi/Makefile b/drivers/firmware/efi/Makefile
> index 4ac2de4dfa72..9a52c7d01e94 100644
> --- a/drivers/firmware/efi/Makefile
> +++ b/drivers/firmware/efi/Makefile
> @@ -34,3 +34,4 @@ obj-$(CONFIG_EFI_CAPSULE_LOADER) += capsule-loader.o
> obj-$(CONFIG_EFI_EARLYCON) += earlycon.o
> obj-$(CONFIG_UEFI_CPER_ARM) += cper-arm.o
> obj-$(CONFIG_UEFI_CPER_X86) += cper-x86.o
> +obj-$(CONFIG_UEFI_CPER_CCIX) += cper-ccix.o
> diff --git a/drivers/firmware/efi/cper-ccix.c b/drivers/firmware/efi/cper-ccix.c
> new file mode 100644
> index 000000000000..588a7aaa6a72
> --- /dev/null
> +++ b/drivers/firmware/efi/cper-ccix.c
> @@ -0,0 +1,362 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * UEFI Common Platform Error Record (CPER) support for CCIX
> + * protocol errors.
> + *
> + * Copyright (C) 2019, Huawei
> + * Author: Jonathan Cameron <jonathan.cameron@xxxxxxxxxx>
> + *
> + * The CCIX® trademark and CCIX trade name are owned solely by
> + * CCIX CONSORTIUM, INC. and all rights are reserved therein.
> + *
> + * CPER is the format used to describe platform hardware error by
> + * various tables, such as ERST, BERT and HEST etc.
> + *
> + * For more information about CPER, please refer to Appendix N of UEFI
> + * Specification version 2.9.
> + *
> + * CCIX defines a number of Protocol Error Messages which for the
> + * main body of the CCIX CPER records. These are defined in the
> + * CCIX Specification 1.0.
> + */
> +
> +#include <acpi/ghes.h>
> +#include <linux/acpi.h>
> +#include <linux/bitfield.h>
> +#include <linux/cper.h>
> +#include <linux/kernel.h>
> +#include <linux/printk.h>
> +#include <ras/ras_event.h>
> +
> +static char rcd_decode_str[CPER_REC_LEN];
> +
> +static const char * const ccix_comp_type_strs[] = {
> + "Request Agent",
> + "Home Agent",
> + "Slave Agent",
> + "Port",
> + "Link",
> +};
> +
> +const char *cper_ccix_comp_type_str(u8 comp_type)
> +{
> + return comp_type < ARRAY_SIZE(ccix_comp_type_strs) ?
> + ccix_comp_type_strs[comp_type] : "Reserved";
> +}
> +
> +static const char * const ccix_per_type_strs[] = {
> + "Memory Error",
> + "Cache Error",
> + "ATC Error",
> + "Port Error",
> + "Link Error",
> + "Agent Internal",
> +};
> +
> +static const char * const ccix_mem_pool_gen_type_strs[] = {
> + "Other, Non-specified",
> + "ROM",
> + "Volatile",
> + "Non-volatile",
> + "Device",
> +};
> +
> +static const char *cper_ccix_mem_err_generic_type_str(u16 type)
> +{
> + const char *gen_type_str;
> +
> + if (type < ARRAY_SIZE(ccix_mem_pool_gen_type_strs))
> + gen_type_str = ccix_mem_pool_gen_type_strs[type];
> + else if (type >= 0x80)
> + gen_type_str = "Vendor";
> + else
> + gen_type_str = "Reserved";
> +
> + return gen_type_str;
> +}
> +
> +static const char * const ccix_mem_op_type_strs[] = {
> + "Generic",
> + "Read",
> + "Write",
> + "Reserved",
> + "Scrub",
> +};
> +
> +static const char *cper_ccix_mem_err_op_str(u8 op_type)
> +{
> + return op_type < ARRAY_SIZE(ccix_mem_op_type_strs) ?
> + ccix_mem_op_type_strs[op_type] :
> + "Reserved";
> +}
> +
> +/* Sightly different from the generic version */
> +static const char * const ccix_mem_err_type_strs[] = {
> + "Unknown",
> + "No Error",
> + "Single-bit ECC",
> + "Multi-bit ECC",
> + "Single-symbol ChipKill ECC",
> + "Multi-symbol ChipKill ECC",
> + "Master Abort",
> + "Target Abort",
> + "Parity Error",
> + "Watchdog Timeout",
> + "Invalid Address",
> + "Mirror Broken",
> + "Memory Sparing",
> + "Scrub",
> + "Physical Memory Map-out Event",
> +};
> +
> +const char *cper_ccix_mem_err_type_str(unsigned int error_type)
> +{
> + return error_type < ARRAY_SIZE(ccix_mem_err_type_strs) ?
> + ccix_mem_err_type_strs[error_type] : "Reserved";
> +}
> +
> +static const char * const ccix_mem_spec_type_strs[] = {
> + "Other, Not-specified",
> + "SRAM",
> + "DDR",
> + "NVDIMM-F",
> + "NVDIMM-N",
> + "HBM",
> + "Flash"
> +};
> +
> +static const char *cper_ccix_mem_err_spec_type_str(u8 specific_type)
> +{
> + if (specific_type < ARRAY_SIZE(ccix_mem_spec_type_strs))
> + return ccix_mem_spec_type_strs[specific_type];
> + else if (specific_type >= 0x80)
> + return "Vendor";
> + else
> + return "Reserved";
> +}
> +
> +/*
> + * We pack up everything except those that are needed for software handling:
> + * - error_type, physical_addr
> + * and header values that would require additional validation bits:
> + * - source, component, severity,
> + * implicit: protocol error type (mem)
> + */
> +void cper_ccix_mem_err_pack(const struct cper_sec_ccix_mem_error *mem_record,
> + struct cper_ccix_mem_err_compact *cmem_err,
> + const u16 vendor_data_len,
> + u8 *vendor_data)
> +{
> + cmem_err->validation_bits = mem_record->validation_bits;
> + cmem_err->mem_err_type = mem_record->memory_error_type;
> + cmem_err->pool_generic_type = mem_record->pool_generic_type;
> + cmem_err->op_type = mem_record->op_type;
> + cmem_err->card = mem_record->card;
> + cmem_err->module = mem_record->module;
> + cmem_err->bank = mem_record->bank;
> + cmem_err->device = mem_record->device;
> + cmem_err->row = mem_record->row;
> + cmem_err->column = mem_record->column;
> + cmem_err->rank = mem_record->rank;
> + cmem_err->bit_pos = mem_record->bit_pos;
> + cmem_err->chip_id = mem_record->chip_id;
> + cmem_err->pool_specific_type = mem_record->pool_specific_type;
> + cmem_err->fru = mem_record->fru;
> + memcpy(vendor_data, &mem_record->vendor_data[1], vendor_data_len);
Hmm... I was unable to identify where you allocated mem_record, but
on a quicker view, I suspect you need to have some tests here, in
order to check if the length of the mem_record matches vendor_data_len.
> +}
> +
> +static int cper_ccix_err_location(struct cper_ccix_mem_err_compact *cmem_err,
> + char msg[CPER_REC_LEN])
> +{
> + u32 len = CPER_REC_LEN - 1;
> + u32 n = 0;
> +
> + if (!msg)
> + return 0;
> +
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_GENERIC_MEM_VALID)
> + n = snprintf(msg, len, "Pool Generic Type: %s ",
> + cper_ccix_mem_err_generic_type_str(cmem_err->pool_generic_type));
> +
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_MEM_ERR_TYPE_VALID)
> + n += snprintf(msg + n, len - n, "Err Type: %s ",
> + cper_ccix_mem_err_type_str(cmem_err->mem_err_type));
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_OP_VALID)
> + n += snprintf(msg + n, len - n, "Operation: %s ",
> + cper_ccix_mem_err_op_str(cmem_err->op_type));
> +
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_CARD_VALID)
> + n += snprintf(msg + n, len - n, "Card: %d ", cmem_err->card);
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_MOD_VALID)
> + n += snprintf(msg + n, len - n, "Mod: %d ", cmem_err->module);
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_BANK_VALID)
> + n += snprintf(msg + n, len - n, "Bank: %d ", cmem_err->bank);
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_DEVICE_VALID)
> + n += snprintf(msg + n, len - n, "Device: %d ",
> + cmem_err->device);
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_ROW_VALID)
> + n += snprintf(msg + n, len - n, "Row: %d ", cmem_err->row);
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_COL_VALID)
> + n += snprintf(msg + n, len - n, "Col: %d ", cmem_err->column);
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_RANK_VALID)
> + n += snprintf(msg + n, len - n, "Rank: %d ", cmem_err->rank);
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_BIT_POS_VALID)
> + n += snprintf(msg + n, len - n, "BitPos: %d ",
> + cmem_err->bit_pos);
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_CHIP_ID_VALID)
> + n += snprintf(msg + n, len - n, "ChipID: %d ",
> + cmem_err->chip_id);
> + if (cmem_err->validation_bits & CCIX_MEM_ERR_SPEC_TYPE_VALID)
> + n += snprintf(msg + n, len - n, "Pool Specific Type: %s ",
> + cper_ccix_mem_err_spec_type_str(cmem_err->pool_specific_type));
> + n += snprintf(msg + n, len - n, "FRU: %d ", cmem_err->fru);
> +
> + return n;
> +}
> +
> +const char *cper_ccix_mem_err_unpack(struct trace_seq *p,
> + struct cper_ccix_mem_err_compact *cmem_err)
> +{
> + const char *ret = trace_seq_buffer_ptr(p);
> +
> + if (cper_ccix_err_location(cmem_err, rcd_decode_str))
> + trace_seq_printf(p, "%s", rcd_decode_str);
> + trace_seq_putc(p, '\0');
> +
> + return ret;
> +}
> +
> +static int cper_ccix_mem_err_details(const char *pfx,
> + struct acpi_hest_generic_data *gdata)
> +{
> + struct cper_ccix_mem_error *full_mem_err;
> + struct cper_sec_ccix_mem_error *mem_err;
> + u16 vendor_data_len;
> + int i;
> +
Are you just printing here the same message that would be sent to trace?
If so, I would add here something like:
if (ras_userspace_consumers())
return; /* do not printk */
> + if (gdata->error_data_length < sizeof(*full_mem_err))
> + return -ENOSPC;
> +
> + full_mem_err = acpi_hest_get_payload(gdata);
> +
> + mem_err = &full_mem_err->mem_record;
> + printk("%s""FRU ID: %u, Length: %u\n", pfx,
> + mem_err->fru, mem_err->length);
> + if (mem_err->validation_bits & CCIX_MEM_ERR_GENERIC_MEM_VALID)
> + printk("%s""Pool Generic Type: %s\n", pfx,
> + cper_ccix_mem_err_generic_type_str(mem_err->pool_generic_type));
Please don't call printk() directly. Instead, use the higher level debug
macros,like pr_error().
The same two notes apply to all other similar code on this patch and at
the next ones.
> +
> + if (mem_err->validation_bits & CCIX_MEM_ERR_OP_VALID)
> + printk("%s""Operation: %s\n", pfx,
> + cper_ccix_mem_err_op_str(mem_err->op_type));
> +
> + if (mem_err->validation_bits & CCIX_MEM_ERR_MEM_ERR_TYPE_VALID) {
> + printk("%s""Mem Error Type: %s\n", pfx,
> + cper_ccix_mem_err_type_str(mem_err->memory_error_type));
> + }
> + if (mem_err->validation_bits & CCIX_MEM_ERR_CARD_VALID)
> + printk("%s""Card: %u\n", pfx, mem_err->card);
> + if (mem_err->validation_bits & CCIX_MEM_ERR_MOD_VALID)
> + printk("%s""Module: %u\n", pfx, mem_err->module);
> + if (mem_err->validation_bits & CCIX_MEM_ERR_BANK_VALID)
> + printk("%s""Bank: %u\n", pfx, mem_err->bank);
> + if (mem_err->validation_bits & CCIX_MEM_ERR_DEVICE_VALID)
> + printk("%s""Device: %u\n", pfx, mem_err->device);
> + if (mem_err->validation_bits & CCIX_MEM_ERR_ROW_VALID)
> + printk("%s""Row: %u\n", pfx, mem_err->row);
> + if (mem_err->validation_bits & CCIX_MEM_ERR_COL_VALID)
> + printk("%s""Column: %u\n", pfx, mem_err->column);
> + if (mem_err->validation_bits & CCIX_MEM_ERR_RANK_VALID)
> + printk("%s""Rank: %u\n", pfx, mem_err->rank);
> + if (mem_err->validation_bits & CCIX_MEM_ERR_BIT_POS_VALID)
> + printk("%s""Bit Pos: %u\n", pfx, mem_err->bit_pos);
> + if (mem_err->validation_bits & CCIX_MEM_ERR_CHIP_ID_VALID)
> + printk("%s""Chip ID: %u\n", pfx, mem_err->chip_id);
> + if (mem_err->validation_bits & CCIX_MEM_ERR_SPEC_TYPE_VALID)
> + printk("%s""Specific Type: %s\n", pfx,
> + cper_ccix_mem_err_spec_type_str(mem_err->pool_specific_type));
> +
> + if (mem_err->validation_bits & CCIX_MEM_ERR_VENDOR_DATA_VALID) {
> + if (gdata->error_data_length < sizeof(*full_mem_err) + 4)
> + return -ENOSPC;
> +
> + vendor_data_len = mem_err->vendor_data[0] & GENMASK(15, 0);
> + if (gdata->error_data_length <
> + sizeof(*full_mem_err) + vendor_data_len)
> + return -ENOSPC;
> +
> + for (i = 0; i < vendor_data_len / 4 - 1; i++)
> + printk("%s""Vendor%d: 0x%08x\n", pfx, i,
> + mem_err->vendor_data[i + 1]);
> + }
> +
> + return 0;
> +}
> +
> +int cper_print_ccix_per(const char *pfx, struct acpi_hest_generic_data *gdata)
> +{
> + struct cper_sec_ccix_header *header = acpi_hest_get_payload(gdata);
> + __u32 *dw;
> + __u32 comp_type;
> + enum ccix_per_type per_type;
> + bool vendor_per;
> +
> + if (gdata->error_data_length < sizeof(*header))
> + return -ENOSPC;
> +
> + printk("%s""CPER Length: %u\n", pfx, header->length);
> + if (header->validation_bits & CPER_CCIX_VALID_SOURCE_ID)
> + printk("%s""Source: %u\n", pfx, header->source_id);
> + if (header->validation_bits & CPER_CCIX_VALID_PORT_ID)
> + printk("%s""Port: %u\n", pfx, header->port_id);
> + /* Not much use if we don't have the per log, in theory it's optional */
> + if ((header->validation_bits & CPER_CCIX_VALID_PER_LOG) == 0)
> + return 0;
> +
> + /* The per log header is a packed structure so needs breaking up */
> + if (gdata->error_data_length < sizeof(*header) + 8 * 4)
> + return -ENOSPC;
> +
> + dw = (__u32 *)(header + 1);
> +
> + printk("%s""PER Rev: %lu, Log Length: %lu\n", pfx,
> + FIELD_GET(CCIX_PER_LOG_DW0_REV_M, dw[0]),
> + FIELD_GET(CCIX_PER_LOG_DW0_LEN_M, dw[0]));
> + comp_type = FIELD_GET(CCIX_PER_LOG_DW1_COMP_TYPE_M, dw[1]);
> + printk("%s""Component: %s\n", pfx, cper_ccix_comp_type_str(comp_type));
> + printk("%s""ME: %lu, SevUE: %lu, SevNoComm: %lu, SevDegraded: %lu, SevDeferred %lu\n",
> + pfx,
> + FIELD_GET(CCIX_PER_LOG_DW0_ME_M, dw[0]),
> + FIELD_GET(CCIX_PER_LOG_DW1_SEV_UE_M, dw[1]),
> + FIELD_GET(CCIX_PER_LOG_DW1_SEV_NO_COMM_M, dw[1]),
> + FIELD_GET(CCIX_PER_LOG_DW1_SEV_DEGRADED_M, dw[1]),
> + FIELD_GET(CCIX_PER_LOG_DW1_SEV_DEFFERABLE_M, dw[1]));
> +
> + /* per_type is vendor defined if VEN is set */
> + vendor_per = FIELD_GET(CCIX_PER_LOG_DW1_VEN_VAL_M, dw[1]) ?
> + true : false;
> + per_type = FIELD_GET(CCIX_PER_LOG_DW1_PER_TYPE_M, dw[1]);
> + if (vendor_per)
> + printk("%s""Protocol Error Type: Vendor%u", pfx, per_type);
> + else
> + printk("%s""Protocol Error Type: %s\n", pfx,
> + per_type < ARRAY_SIZE(ccix_per_type_strs) ?
> + ccix_per_type_strs[per_type] : "Reserved");
> +
> + if (FIELD_GET(CCIX_PER_LOG_DW1_ADDR_VAL_M, dw[1]))
> + printk("%s""Address: 0x%llx\n", pfx,
> + (((__u64)dw[2]) << 32) | (dw[3] & 0xFFFFFFFC));
> +
> + /* Vendor defined PER message, perhaps we could print it out */
> + if (vendor_per)
> + return 0;
> +
> + switch (per_type) {
> + case CCIX_MEMORY_ERROR:
> + return cper_ccix_mem_err_details(pfx, gdata);
> + default:
> + /* Vendor defined so no formatting be done */
> + break;
> + }
> + return 0;
> +}
> diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
> index b1af0de2e100..03bb27db2e87 100644
> --- a/drivers/firmware/efi/cper.c
> +++ b/drivers/firmware/efi/cper.c
> @@ -474,6 +474,12 @@ cper_estatus_print_section(const char *pfx, struct acpi_hest_generic_data *gdata
> cper_print_pcie(newpfx, pcie, gdata);
> else
> goto err_section_too_small;
> + } else if (guid_equal(sec_type, &CPER_SEC_CCIX)) {
> + int ret;
> + /* CCIX CPER entries are variable length */
> + ret = cper_print_ccix_per(newpfx, gdata);
> + if (ret)
> + goto err_section_too_small;
> #if defined(CONFIG_ARM64) || defined(CONFIG_ARM)
> } else if (guid_equal(sec_type, &CPER_SEC_PROC_ARM)) {
> struct cper_sec_proc_arm *arm_err = acpi_hest_get_payload(gdata);
> diff --git a/include/linux/cper.h b/include/linux/cper.h
> index 4f005d95ce88..df7a34c3ba4f 100644
> --- a/include/linux/cper.h
> +++ b/include/linux/cper.h
> @@ -174,6 +174,9 @@ enum {
> #define CPER_SEC_PCIE \
> GUID_INIT(0xD995E954, 0xBBC1, 0x430F, 0xAD, 0x91, 0xB4, 0x4D, \
> 0xCB, 0x3C, 0x6F, 0x35)
> +#define CPER_SEC_CCIX \
> + GUID_INIT(0x91335EF6, 0xEBFB, 0x4478, 0xA6, 0xA6, 0x88, 0xB7, \
> + 0x28, 0xCF, 0x75, 0xD7)
> /* Firmware Error Record Reference */
> #define CPER_SEC_FW_ERR_REC_REF \
> GUID_INIT(0x81212A96, 0x09ED, 0x4996, 0x94, 0x71, 0x8D, 0x72, \
> @@ -242,6 +245,10 @@ enum {
>
> #define CPER_PCIE_SLOT_SHIFT 3
>
> +#define CPER_CCIX_VALID_SOURCE_ID BIT(0)
> +#define CPER_CCIX_VALID_PORT_ID BIT(1)
> +#define CPER_CCIX_VALID_PER_LOG BIT(2)
> +
> #define CPER_ARM_VALID_MPIDR BIT(0)
> #define CPER_ARM_VALID_AFFINITY_LEVEL BIT(1)
> #define CPER_ARM_VALID_RUNNING_STATE BIT(2)
> @@ -521,6 +528,105 @@ struct cper_sec_pcie {
> u8 aer_info[96];
> };
>
> +struct cper_sec_ccix_header {
> + __u32 length;
> + __u64 validation_bits;
> + __u8 source_id;
> + __u8 port_id;
> + __u8 reserved[2];
> +};
> +
> +#define CCIX_PER_LOG_DW0_REV_M GENMASK(7, 0)
> +#define CCIX_PER_LOG_DW0_LEN_M GENMASK(14, 8)
> +#define CCIX_PER_LOG_DW0_ME_M BIT(15)
> +#define CCIX_PER_LOG_DW1_COMP_TYPE_M GENMASK(15, 12)
> +#define CCIX_PER_LOG_DW1_SEV_UE_M BIT(16)
> +#define CCIX_PER_LOG_DW1_SEV_NO_COMM_M BIT(17)
> +#define CCIX_PER_LOG_DW1_SEV_DEGRADED_M BIT(18)
> +#define CCIX_PER_LOG_DW1_SEV_DEFFERABLE_M BIT(19)
> +#define CCIX_PER_LOG_DW1_PER_TYPE_M GENMASK(27, 24)
> +#define CCIX_PER_LOG_DW1_ADDR_VAL_M BIT(30)
> +#define CCIX_PER_LOG_DW1_VEN_VAL_M BIT(31)
> +enum ccix_per_type {
> + CCIX_MEMORY_ERROR = 0,
> + CCIX_CACHE_ERROR = 1,
> + CCIX_ATC_ERROR = 2,
> + CCIX_PORT_ERROR = 3,
> + CCIX_LINK_ERROR = 4,
> + CCIX_AGENT_INTERNAL_ERROR = 5,
> +};
> +
> +#define CCIX_PER_LOG_HEADER_DWS 8
> +
> +struct cper_sec_ccix_mem_error {
> + __u32 validation_bits;
> +#define CCIX_MEM_ERR_GENERIC_MEM_VALID BIT(0)
> +#define CCIX_MEM_ERR_OP_VALID BIT(1)
> +#define CCIX_MEM_ERR_MEM_ERR_TYPE_VALID BIT(2)
> +#define CCIX_MEM_ERR_CARD_VALID BIT(3)
> +#define CCIX_MEM_ERR_BANK_VALID BIT(4)
> +#define CCIX_MEM_ERR_DEVICE_VALID BIT(5)
> +#define CCIX_MEM_ERR_ROW_VALID BIT(6)
> +#define CCIX_MEM_ERR_COL_VALID BIT(7)
> +#define CCIX_MEM_ERR_RANK_VALID BIT(8)
> +#define CCIX_MEM_ERR_BIT_POS_VALID BIT(9)
> +#define CCIX_MEM_ERR_CHIP_ID_VALID BIT(10)
> +#define CCIX_MEM_ERR_VENDOR_DATA_VALID BIT(11)
> +#define CCIX_MEM_ERR_MOD_VALID BIT(12)
> +#define CCIX_MEM_ERR_SPEC_TYPE_VALID BIT(13)
> +
> + __u8 fru;
> + __u8 reserved;
> + __u16 length; /* Includes vendor specific log info */
> + __u8 pool_generic_type;
> + __u8 op_type;
> + __u8 memory_error_type;
> + __u8 card;
> + __u16 module;
> + __u16 bank;
> + __u32 device;
> + __u32 row;
> + __u32 column;
> + __u32 rank;
> + __u8 bit_pos;
> + __u8 chip_id;
> + __u8 pool_specific_type;
> + __u32 vendor_data[];
> +};
> +
> +struct cper_ccix_mem_error {
> + struct cper_sec_ccix_header header;
> + __u32 ccix_header[CCIX_PER_LOG_HEADER_DWS];
> + struct cper_sec_ccix_mem_error mem_record;
> +};
> +
> +static inline u16 ccix_mem_err_ven_len_get(struct cper_ccix_mem_error *mem_err)
> +{
> + if (mem_err->mem_record.validation_bits &
> + CCIX_MEM_ERR_VENDOR_DATA_VALID)
> + return mem_err->mem_record.vendor_data[0] & 0xFFFF;
> + else
> + return 0;
> +}
> +
> +struct cper_ccix_mem_err_compact {
> + __u32 validation_bits;
> + __u8 mem_err_type;
> + __u8 pool_generic_type;
> + __u8 pool_specific_type;
> + __u8 op_type;
> + __u8 card;
> + __u16 module;
> + __u16 bank;
> + __u32 device;
> + __u32 row;
> + __u32 column;
> + __u32 rank;
> + __u8 bit_pos;
> + __u8 chip_id;
> + __u8 fru;
> +};
> +
> /* Reset to default packing */
> #pragma pack()
>
> @@ -535,6 +641,18 @@ void cper_mem_err_pack(const struct cper_sec_mem_err *,
> struct cper_mem_err_compact *);
> const char *cper_mem_err_unpack(struct trace_seq *,
> struct cper_mem_err_compact *);
> +void cper_ccix_mem_err_pack(const struct cper_sec_ccix_mem_error *mem_record,
> + struct cper_ccix_mem_err_compact *cmem_err,
> + const u16 vendor_data_len,
> + u8 *vendor_data);
> +const char *cper_ccix_mem_err_unpack(struct trace_seq *p,
> + struct cper_ccix_mem_err_compact *cmem_err);
> +const char *cper_ccix_mem_err_type_str(unsigned int error_type);
> +const char *cper_ccix_comp_type_str(u8 comp_type);
> +struct acpi_hest_generic_data;
> +int cper_print_ccix_per(const char *pfx,
> + struct acpi_hest_generic_data *gdata);
> +
> void cper_print_proc_arm(const char *pfx,
> const struct cper_sec_proc_arm *proc);
> void cper_print_proc_ia(const char *pfx,
> diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h
> index 36c5c5e38c1d..560e55958561 100644
> --- a/include/ras/ras_event.h
> +++ b/include/ras/ras_event.h
> @@ -14,6 +14,7 @@
> #include <linux/cper.h>
> #include <linux/mm.h>
>
> +#include <linux/bitfield.h>
> /*
> * MCE Extended Error Log trace event
> *
> @@ -338,6 +339,84 @@ TRACE_EVENT(aer_event,
> "Not available")
> );
>
> +#if defined(CONFIG_ACPI_APEI_CCIX)
> +/*
> + * CCIX PER log memory error trace event
> + *
> + * These events are generated when hardware detects a corrected or
> + * uncorrected event.
> + *
> + * Some elements of the record are not included
> + * - PER version (tracepoint should remain compatible across versions)
> + * - Multiple Error
> + */
> +TRACE_EVENT(ccix_memory_error_event,
> + TP_PROTO(struct cper_ccix_mem_error *mem,
> + u32 err_seq,
> + u8 sev,
> + u16 ven_len),
> +
> + TP_ARGS(mem, err_seq, sev, ven_len),
> +
> + TP_STRUCT__entry(
> + __field(u32, err_seq)
> + __field(u8, sev)
> + __field(u8, sevdetail)
> + __field(u8, source)
> + __field(u8, component)
> + __field(u64, pa)
> + __field(u8, pa_mask_lsb)
> + __field_struct(struct cper_ccix_mem_err_compact, data)
> + __field(u16, vendor_data_length)
> + __dynamic_array(u8, vendor_data, ven_len)
> + ),
> +
> + TP_fast_assign(
> + __entry->err_seq = err_seq;
> + __entry->sev = sev;
> + __entry->sevdetail =
> + FIELD_GET(CCIX_PER_LOG_DW1_SEV_UE_M |
> + CCIX_PER_LOG_DW1_SEV_NO_COMM_M |
> + CCIX_PER_LOG_DW1_SEV_DEGRADED_M |
> + CCIX_PER_LOG_DW1_SEV_DEFFERABLE_M,
> + mem->ccix_header[1]);
> + if (mem->header.validation_bits & 0x1)
> + __entry->source = mem->header.source_id;
> + else
> + __entry->source = ~0;
> + __entry->component = FIELD_GET(CCIX_PER_LOG_DW1_COMP_TYPE_M,
> + mem->ccix_header[1]);
> + if (mem->ccix_header[1] & CCIX_PER_LOG_DW1_ADDR_VAL_M) {
> + __entry->pa = (u64)mem->ccix_header[2] << 32 |
> + (mem->ccix_header[3] & 0xfffffffc);
> + __entry->pa_mask_lsb = mem->ccix_header[4] & 0xff;
> + } else {
> + __entry->pa = ~0ull;
> + __entry->pa_mask_lsb = ~0;
> + }
> + __entry->vendor_data_length = ven_len ? ven_len - 4 : 0;
> + cper_ccix_mem_err_pack(&mem->mem_record, &__entry->data,
> + __entry->vendor_data_length,
> + __get_dynamic_array(vendor_data));
> + ),
> +
> + TP_printk("{%d} %s CCIX PER Memory Error in %s SevUE:%d SevNoComm:%d SevDegraded:%d SevDeferred:%d physical addr: %016llx (mask: %x) %s vendor:%s",
> + __entry->err_seq,
> + cper_severity_str(__entry->sev),
> + cper_ccix_comp_type_str(__entry->component),
> + __entry->sevdetail & BIT(0) ? 1 : 0,
> + __entry->sevdetail & BIT(1) ? 1 : 0,
> + __entry->sevdetail & BIT(2) ? 1 : 0,
> + __entry->sevdetail & BIT(3) ? 1 : 0,
> + __entry->pa,
> + __entry->pa_mask_lsb,
> + cper_ccix_mem_err_unpack(p, &__entry->data),
> + __print_hex(__get_dynamic_array(vendor_data),
> + __entry->vendor_data_length)
> + )
> +);
> +#endif
> +
> /*
> * memory-failure recovery action result event
> *
Cheers,
Mauro
