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* [PATCH 0/6 V2] CCIX Protocol error reporting.
@ 2019-08-20 14:47 Jonathan Cameron
  2019-08-20 14:47 ` [PATCH 1/6 V2] efi / ras: CCIX Memory " Jonathan Cameron
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: Jonathan Cameron @ 2019-08-20 14:47 UTC (permalink / raw)
  To: linux-edac, linux-acpi, linux-efi, Borislav Petkov,
	Mauro Carvalho Chehab, james.morse
  Cc: rjw, tony.luck, linuxarm, ard.biesheuvel, nariman.poushin, jcm,
	linux-kernel, peter.maydell, Jonathan Cameron

Note this will clash with:
[PATCH RFC 0/4] ACPI: APEI: Add support to notify the vendor specific HW errors
so a rebase will be needed.

Changes since V1:

Addressed comments from James Morse
- Dropped kernel logging of vendor data. We just push it to the tracepoints.
- Tidied up this cover letter and added information to address questions
  raised. Includes removing questions where James and I agreed ;)

Note, this initial series attempts no 'handling' of errors.
That will follow later.

EFI 2.8 defines a new CPER record Appendix N for CCIX Protocol Error Records
(PER). www.uefi.org

These include Protocol Error Record logs which are defined in the
CCIX 1.0 Base Specification www.ccixconsortium.com.  A public evaluation
version is now available.

Handling of coherency protocol errors is complex and how Linux does this
will take some time to evolve.  For now, fatal errors are handled via the
usual means and everything else is reported.

There are 6 types of error defined, covering:
* Memory errors
* Cache errors
* Address translation unit errors
* CCIX port errors
* CCIX link errors
* Agent internal errors.

These errors are concerned (mostly) wth things happening in the CCIX
protocol layer.  They are parallel to AER errors which should be only
concerned with the PCIe layer (which is underneath CCIX).
The ATS errors break this rule slightly. You may get an error
occurring that results in problems at both layers of the protocol
stack and hence have to handle AER and PER errors simultaneously.

Some of these errors can 'almost' be mapped onto standard existing error
types but only at the loss of information specific to CCIX such as
where in the topology they occurred.

The set includes tracepoints to report the errors to RAS Daemon and a patch
set for RAS Daemon will follow shortly.

Several design decisions that people may disagree with.
1. Reporting of vendor data.  We have little choice but to do this via a
   dynamic array as these blocks can take arbitrary size. I had hoped
   no one would actually use these given the odd mismatch between a
   standard error structure and non standard element, but there are
   already designs out there that do use it. James suggested that
   it made sense to put these in the tracepoints, but we shouldn't spam
   the kernel log with them (done in V2).
2. The trade off between explicit tracepoint fields, on which we might
   want to filter in kernel, and the simplicity of a blob.
   I have gone for having the whole of the block specific to the PER
   error type in an opaque blob.
   The key elements that may be filtered on are the physical address
   and the source and component fields which allow you to identify
   faulty devices. Note that you have to know how the devices were
   enumerated to be able to do so.
3. Defined 6 new tracepoints rather than cramming everything into one.
   * They are all defined by the CCIX specification as independent error
     classes.
   * Many of them can only be generated by particular types of agent.
   * The handling required will vary widely depending on types.
     In the kernel some map cleanly onto existing handling. Keeping the
     whole flow separate will aide this. They vary by a similar amount
     in scope to the RAS errors found on an existing system which have
     independent tracepoints.
   * Separating them out allows for filtering on the tracepoints by
     elements that are not shared between them.
   * Muxing the lot into one record type can lead to ugly code both in
     kernel and in userspace.

Rasdaemon patches posted.
https://www.spinics.net/lists/linux-edac/msg10616.html

The following boilerplate is granting rights to the kernel.
Note that I haven't applied the CCIX copyright notice anywhere in this
series because we aren't quoting from the specification.  That is
much more likely to happen in documentation patches than in code.

Like anything else in this series it is open to comment.

This patch is being distributed by the CCIX Consortium, Inc. (CCIX) to
you and other parties that are participating (the "participants") in the
Linux kernel with the understanding that the participants will use CCIX's
name and trademark only when this patch is used in association with the
Linux kernel and associated user space.

CCIX is also distributing this patch to these participants with the
understanding that if any portion of the CCIX specification will be
used or referenced in the Linux kernel, the participants will not modify
the cited portion of the CCIX specification and will give CCIX proper
copyright attribution by including the following copyright notice with
the cited part of the CCIX specification:
"© 2019 CCIX CONSORTIUM, INC. ALL RIGHTS RESERVED."

Jonathan Cameron (6):
  efi / ras: CCIX Memory error reporting
  efi / ras: CCIX Cache error reporting
  efi / ras: CCIX Address Translation Cache error reporting
  efi / ras: CCIX Port error reporting
  efi / ras: CCIX Link error reporting
  efi / ras: CCIX Agent internal error reporting

 drivers/acpi/apei/Kconfig        |   8 +
 drivers/acpi/apei/ghes.c         |  59 +++
 drivers/firmware/efi/Kconfig     |   5 +
 drivers/firmware/efi/Makefile    |   1 +
 drivers/firmware/efi/cper-ccix.c | 817 +++++++++++++++++++++++++++++++
 drivers/firmware/efi/cper.c      |   6 +
 include/linux/cper.h             | 333 +++++++++++++
 include/ras/ras_event.h          | 405 +++++++++++++++
 8 files changed, 1634 insertions(+)
 create mode 100644 drivers/firmware/efi/cper-ccix.c

-- 
2.20.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH 1/6 V2] efi / ras: CCIX Memory error reporting
  2019-08-20 14:47 [PATCH 0/6 V2] CCIX Protocol error reporting Jonathan Cameron
@ 2019-08-20 14:47 ` " Jonathan Cameron
  2019-08-20 14:47 ` [PATCH 2/6 V2] efi / ras: CCIX Cache " Jonathan Cameron
                   ` (5 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: Jonathan Cameron @ 2019-08-20 14:47 UTC (permalink / raw)
  To: linux-edac, linux-acpi, linux-efi, Borislav Petkov,
	Mauro Carvalho Chehab, james.morse
  Cc: rjw, tony.luck, linuxarm, ard.biesheuvel, nariman.poushin, jcm,
	linux-kernel, peter.maydell, Jonathan Cameron

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 current RAS
tracepoint only covers the memory error. Additional trace points
will be introduced for other error types along with their
cper handling in a follow up series.

RAS daemon posted. qemu injection patches also available
but not currently planing to upstream those.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 Changes since v1.
	Drop printing of vendor data to kernel log.
	
 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 | 342 +++++++++++++++++++++++++++++++
 drivers/firmware/efi/cper.c      |   6 +
 include/linux/cper.h             | 118 +++++++++++
 include/ras/ras_event.h          |  77 +++++++
 8 files changed, 596 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 a66e00fe31fe..1ae36d836a77 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -477,6 +477,42 @@ 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");
+		break;
+	}
+	err_seq++;
+#endif
+}
+
 static void ghes_do_proc(struct ghes *ghes,
 			 const struct acpi_hest_generic_status *estatus)
 {
@@ -507,6 +543,9 @@ 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 d4ea929e8b34..9ea161f68da8 100644
--- a/drivers/firmware/efi/Kconfig
+++ b/drivers/firmware/efi/Kconfig
@@ -195,6 +195,11 @@ 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 d2d0d2030620..69287da9664b 100644
--- a/drivers/firmware/efi/Makefile
+++ b/drivers/firmware/efi/Makefile
@@ -33,3 +33,4 @@ 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..0be2630b2712
--- /dev/null
+++ b/drivers/firmware/efi/cper-ccix.c
@@ -0,0 +1,342 @@
+// 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@huawei.com>
+ *
+ * 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);
+}
+
+static int cper_ccix_err_location(struct cper_ccix_mem_err_compact *cmem_err,
+				  char *msg)
+{
+	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 + n, 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, "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, "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, "Card: %d ", cmem_err->card);
+	if (cmem_err->validation_bits & CCIX_MEM_ERR_MOD_VALID)
+		n += snprintf(msg + n, len, "Mod: %d ", cmem_err->module);
+	if (cmem_err->validation_bits & CCIX_MEM_ERR_BANK_VALID)
+		n += snprintf(msg + n, len, "Bank: %d ", cmem_err->bank);
+	if (cmem_err->validation_bits & CCIX_MEM_ERR_DEVICE_VALID)
+		n += snprintf(msg + n, len, "Device: %d ", cmem_err->device);
+	if (cmem_err->validation_bits & CCIX_MEM_ERR_ROW_VALID)
+		n += snprintf(msg + n, len, "Row: %d ", cmem_err->row);
+	if (cmem_err->validation_bits & CCIX_MEM_ERR_COL_VALID)
+		n += snprintf(msg + n, len, "Col: %d ", cmem_err->column);
+	if (cmem_err->validation_bits & CCIX_MEM_ERR_RANK_VALID)
+		n += snprintf(msg + n, len, "Rank: %d ", cmem_err->rank);
+	if (cmem_err->validation_bits & CCIX_MEM_ERR_BIT_POS_VALID)
+		n += snprintf(msg + n, len, "BitPos: %d ", cmem_err->bit_pos);
+	if (cmem_err->validation_bits & CCIX_MEM_ERR_CHIP_ID_VALID)
+		n += snprintf(msg + n, len, "ChipID: %d ", cmem_err->chip_id);
+	if (cmem_err->validation_bits & CCIX_MEM_ERR_SPEC_TYPE_VALID)
+		n += snprintf(msg + n, len, "Pool Specific Type: %s ",
+			      cper_ccix_mem_err_spec_type_str(cmem_err->pool_specific_type));
+	n += snprintf(msg + n, len, "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;
+
+	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));
+
+	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));
+
+	/* Vendor data is not printed to the kernel log */
+
+	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 8fa977c7861f..52f0954a4577 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -459,6 +459,12 @@ 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..128728eaeef4 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 +339,82 @@ TRACE_EVENT(aer_event,
 			"Not available")
 );
 
+/*
+ * 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)
+	)
+);
+
 /*
  * memory-failure recovery action result event
  *
-- 
2.20.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH 2/6 V2] efi / ras: CCIX Cache error reporting
  2019-08-20 14:47 [PATCH 0/6 V2] CCIX Protocol error reporting Jonathan Cameron
  2019-08-20 14:47 ` [PATCH 1/6 V2] efi / ras: CCIX Memory " Jonathan Cameron
@ 2019-08-20 14:47 ` " Jonathan Cameron
  2019-08-20 14:47 ` [PATCH 3/6 V2] efi / ras: CCIX Address Translation " Jonathan Cameron
                   ` (4 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: Jonathan Cameron @ 2019-08-20 14:47 UTC (permalink / raw)
  To: linux-edac, linux-acpi, linux-efi, Borislav Petkov,
	Mauro Carvalho Chehab, james.morse
  Cc: rjw, tony.luck, linuxarm, ard.biesheuvel, nariman.poushin, jcm,
	linux-kernel, peter.maydell, Jonathan Cameron

As CCIX Request Agents have fully cache coherent caches,
the CCIX 1.0 Base Specification defines detailed error
reporting for these caches.

A CCIX cache error is reported via a CPER record as defined in the
UEFI 2.8 specification. The PER log section is defined in the
CCIX 1.0 Base Specification.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 Changes since v1.
	Drop printing of vendor data to kernel log.
	
 drivers/acpi/apei/ghes.c         |   4 +
 drivers/firmware/efi/cper-ccix.c | 156 +++++++++++++++++++++++++++++++
 include/linux/cper.h             |  57 +++++++++++
 include/ras/ras_event.h          |  66 +++++++++++++
 4 files changed, 283 insertions(+)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 1ae36d836a77..5bda94e48b1b 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -504,6 +504,10 @@ static void ghes_handle_ccix_per(struct acpi_hest_generic_data *gdata, int sev)
 		trace_ccix_memory_error_event(payload, err_seq, sev,
 					      ccix_mem_err_ven_len_get(payload));
 		break;
+	case CCIX_CACHE_ERROR:
+		trace_ccix_cache_error_event(payload, err_seq, sev,
+					     ccix_cache_err_ven_len_get(payload));
+		break;
 	default:
 		/* Unknown error type */
 		pr_info("CCIX error of unknown or vendor defined type\n");
diff --git a/drivers/firmware/efi/cper-ccix.c b/drivers/firmware/efi/cper-ccix.c
index 0be2630b2712..fa3fafac402b 100644
--- a/drivers/firmware/efi/cper-ccix.c
+++ b/drivers/firmware/efi/cper-ccix.c
@@ -273,6 +273,96 @@ static int cper_ccix_mem_err_details(const char *pfx,
 	return 0;
 }
 
+static const char * const ccix_cache_type_strs[] = {
+	"Instruction Cache",
+	"Data Cache",
+	"Generic / Unified Cache",
+	"Snoop Filter Directory",
+};
+
+static const char *cper_ccix_cache_type_str(__u8 type)
+{
+	return type < ARRAY_SIZE(ccix_cache_type_strs) ?
+		ccix_cache_type_strs[type] : "Reserved";
+}
+
+static const char * const ccix_cache_err_type_strs[] = {
+	"Data",
+	"Tag",
+	"Timeout",
+	"Hang",
+	"Data Lost",
+	"Invalid Address",
+};
+
+const char *cper_ccix_cache_err_type_str(__u8 error_type)
+{
+	return error_type < ARRAY_SIZE(ccix_cache_err_type_strs) ?
+		ccix_cache_err_type_strs[error_type] : "Reserved";
+}
+
+static const char * const ccix_cache_err_op_strs[] = {
+	"Generic",
+	"Generic Read",
+	"Generic Write",
+	"Data Read",
+	"Data Write",
+	"Instruction Fetch",
+	"Prefetch",
+	"Eviction",
+	"Snooping",
+	"Snooped",
+	"Management / Command Error",
+};
+
+static const char *cper_ccix_cache_err_op_str(__u8 op)
+{
+	return op < ARRAY_SIZE(ccix_cache_err_op_strs) ?
+		ccix_cache_err_op_strs[op] : "Reserved";
+}
+
+static int cper_ccix_cache_err_details(const char *pfx,
+				     struct acpi_hest_generic_data *gdata)
+{
+	struct cper_ccix_cache_error *full_cache_err;
+	struct cper_sec_ccix_cache_error *cache_err;
+
+	if (gdata->error_data_length < sizeof(*full_cache_err))
+		return -ENOSPC;
+
+	full_cache_err = acpi_hest_get_payload(gdata);
+
+	cache_err = &full_cache_err->cache_record;
+
+	if (cache_err->validation_bits & CCIX_CACHE_ERR_TYPE_VALID)
+		printk("%s""Cache Type: %s\n", pfx,
+		       cper_ccix_cache_type_str(cache_err->cache_type));
+
+	if (cache_err->validation_bits & CCIX_CACHE_ERR_OP_VALID)
+		printk("%s""Operation: %s\n", pfx,
+		       cper_ccix_cache_err_op_str(cache_err->op_type));
+
+	if (cache_err->validation_bits & CCIX_CACHE_ERR_CACHE_ERR_TYPE_VALID)
+		printk("%s""Cache Error Type: %s\n", pfx,
+		       cper_ccix_cache_err_type_str(cache_err->cache_error_type));
+
+	if (cache_err->validation_bits & CCIX_CACHE_ERR_LEVEL_VALID)
+		printk("%s""Level: %d\n", pfx, cache_err->cache_level);
+
+	if (cache_err->validation_bits & CCIX_CACHE_ERR_SET_VALID)
+		printk("%s""Set: %d\n", pfx, cache_err->set);
+
+	if (cache_err->validation_bits & CCIX_CACHE_ERR_WAY_VALID)
+		printk("%s""Way: %d\n", pfx, cache_err->way);
+
+	if (cache_err->validation_bits & CCIX_CACHE_ERR_INSTANCE_ID_VALID)
+		printk("%s""Instance ID: %d\n", pfx, cache_err->instance);
+
+	/* Vendor data is not printed to the kernel log */
+
+	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);
@@ -334,9 +424,75 @@ int cper_print_ccix_per(const char *pfx, struct acpi_hest_generic_data *gdata)
 	switch (per_type) {
 	case CCIX_MEMORY_ERROR:
 		return cper_ccix_mem_err_details(pfx, gdata);
+	case CCIX_CACHE_ERROR:
+		return cper_ccix_cache_err_details(pfx, gdata);
 	default:
 		/* Vendor defined so no formatting be done */
 		break;
 	}
 	return 0;
 }
+
+void cper_ccix_cache_err_pack(const struct cper_sec_ccix_cache_error *cache_record,
+			      struct cper_ccix_cache_err_compact *ccache_err,
+			      const u16 vendor_data_len,
+			      u8 *vendor_data)
+{
+	ccache_err->validation_bits = cache_record->validation_bits;
+	ccache_err->set = cache_record->set;
+	ccache_err->way = cache_record->way;
+	ccache_err->cache_type = cache_record->cache_type;
+	ccache_err->op_type = cache_record->op_type;
+	ccache_err->cache_error_type = cache_record->cache_error_type;
+	ccache_err->cache_level = cache_record->cache_level;
+	ccache_err->instance = cache_record->instance;
+	memcpy(vendor_data, &cache_record->vendor_data[1], vendor_data_len);
+}
+
+static int cper_ccix_err_cache_location(struct cper_ccix_cache_err_compact *ccache_err,
+					char *msg)
+{
+	u32 len = CPER_REC_LEN - 1;
+	u32 n = 0;
+
+	if (!msg)
+		return 0;
+
+	if (ccache_err->validation_bits & CCIX_CACHE_ERR_CACHE_ERR_TYPE_VALID)
+		n += snprintf(msg + n, len, "Error: %s ",
+			     cper_ccix_cache_err_type_str(ccache_err->cache_error_type));
+
+	if (ccache_err->validation_bits & CCIX_CACHE_ERR_TYPE_VALID)
+		n += snprintf(msg + n, len, "Type: %s ",
+			     cper_ccix_cache_type_str(ccache_err->cache_type));
+
+	if (ccache_err->validation_bits & CCIX_CACHE_ERR_OP_VALID)
+		n += snprintf(msg + n, len, "Op: %s ",
+			      cper_ccix_cache_err_op_str(ccache_err->op_type));
+
+	if (ccache_err->validation_bits & CCIX_CACHE_ERR_LEVEL_VALID)
+		n += snprintf(msg + n, len, "Level: %d ",
+			      ccache_err->cache_level);
+	if (ccache_err->validation_bits & CCIX_CACHE_ERR_SET_VALID)
+		n += snprintf(msg + n, len, "Set: %d ", ccache_err->set);
+	if (ccache_err->validation_bits & CCIX_CACHE_ERR_WAY_VALID)
+		n += snprintf(msg + n, len, "Way: %d ", ccache_err->way);
+	if (ccache_err->validation_bits & CCIX_CACHE_ERR_INSTANCE_ID_VALID)
+		n += snprintf(msg + n, len, "Instance: %d ",
+			      ccache_err->instance);
+
+	return n;
+}
+
+const char *cper_ccix_cache_err_unpack(struct trace_seq *p,
+				       struct cper_ccix_cache_err_compact *ccache_err)
+{
+	const char *ret = trace_seq_buffer_ptr(p);
+
+	if (cper_ccix_err_cache_location(ccache_err, rcd_decode_str))
+		trace_seq_printf(p, "%s", rcd_decode_str);
+
+	trace_seq_putc(p, '\0');
+
+	return ret;
+}
diff --git a/include/linux/cper.h b/include/linux/cper.h
index df7a34c3ba4f..eef254b8b8b7 100644
--- a/include/linux/cper.h
+++ b/include/linux/cper.h
@@ -627,6 +627,54 @@ struct cper_ccix_mem_err_compact {
 	__u8	fru;
 };
 
+struct cper_sec_ccix_cache_error {
+	__u32	validation_bits;
+#define CCIX_CACHE_ERR_TYPE_VALID		BIT(0)
+#define CCIX_CACHE_ERR_OP_VALID			BIT(1)
+#define CCIX_CACHE_ERR_CACHE_ERR_TYPE_VALID	BIT(2)
+#define CCIX_CACHE_ERR_LEVEL_VALID		BIT(3)
+#define CCIX_CACHE_ERR_SET_VALID		BIT(4)
+#define CCIX_CACHE_ERR_WAY_VALID		BIT(5)
+#define CCIX_CACHE_ERR_INSTANCE_ID_VALID	BIT(6)
+#define CCIX_CACHE_ERR_VENDOR_DATA_VALID	BIT(7)
+	__u16	length; /* Includes vendor specific log info */
+	__u8	cache_type;
+	__u8	op_type;
+	__u8	cache_error_type;
+	__u8	cache_level;
+	__u32	set;
+	__u32	way;
+	__u8	instance;
+	__u8	reserved;
+	__u32	vendor_data[];
+};
+
+struct cper_ccix_cache_error {
+	struct cper_sec_ccix_header header;
+	__u32 ccix_header[CCIX_PER_LOG_HEADER_DWS];
+	struct cper_sec_ccix_cache_error cache_record;
+};
+
+static inline u16 ccix_cache_err_ven_len_get(struct cper_ccix_cache_error *cache_err)
+{
+	if (cache_err->cache_record.validation_bits &
+	    CCIX_CACHE_ERR_VENDOR_DATA_VALID)
+		return cache_err->cache_record.vendor_data[0] & 0xFFFF;
+	else
+		return 0;
+}
+
+struct cper_ccix_cache_err_compact {
+	__u32	validation_bits;
+	__u32	set;
+	__u32	way;
+	__u8	cache_type;
+	__u8	op_type;
+	__u8	cache_error_type;
+	__u8	cache_level;
+	__u8	instance;
+};
+
 /* Reset to default packing */
 #pragma pack()
 
@@ -649,6 +697,15 @@ 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);
+
+void cper_ccix_cache_err_pack(const struct cper_sec_ccix_cache_error *cache_record,
+			      struct cper_ccix_cache_err_compact *ccache_err,
+			      const u16 vendor_data_len,
+			      u8 *vendor_data);
+const char *cper_ccix_cache_err_unpack(struct trace_seq *p,
+				       struct cper_ccix_cache_err_compact *ccache_err);
+const char *cper_ccix_cache_err_type_str(__u8 error_type);
+
 struct acpi_hest_generic_data;
 int cper_print_ccix_per(const char *pfx,
 			struct acpi_hest_generic_data *gdata);
diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h
index 128728eaeef4..55f2c1900c54 100644
--- a/include/ras/ras_event.h
+++ b/include/ras/ras_event.h
@@ -415,6 +415,72 @@ TRACE_EVENT(ccix_memory_error_event,
 	)
 );
 
+TRACE_EVENT(ccix_cache_error_event,
+	TP_PROTO(struct cper_ccix_cache_error *err,
+		 u32 err_seq,
+		 u8 sev,
+		 u16 ven_len),
+
+	TP_ARGS(err, 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_cache_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,
+			err->ccix_header[1]);
+		if (err->header.validation_bits & 0x1)
+			__entry->source = err->header.source_id;
+		else
+			__entry->source = ~0;
+		__entry->component = FIELD_GET(CCIX_PER_LOG_DW1_COMP_TYPE_M,
+					       err->ccix_header[1]);
+		if (err->ccix_header[1] & CCIX_PER_LOG_DW1_ADDR_VAL_M) {
+			__entry->pa = (u64)err->ccix_header[2] << 32 |
+				(err->ccix_header[3] & 0xfffffffc);
+			__entry->pa_mask_lsb = err->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_cache_err_pack(&err->cache_record, &__entry->data,
+					 __entry->vendor_data_length,
+					 __get_dynamic_array(vendor_data));
+	),
+
+	TP_printk("{%d} %s CCIX PER Cache 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_cache_err_unpack(p, &__entry->data),
+		__print_hex(__get_dynamic_array(vendor_data),
+			    __entry->vendor_data_length)
+	)
+);
 /*
  * memory-failure recovery action result event
  *
-- 
2.20.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH 3/6 V2] efi / ras: CCIX Address Translation Cache error reporting
  2019-08-20 14:47 [PATCH 0/6 V2] CCIX Protocol error reporting Jonathan Cameron
  2019-08-20 14:47 ` [PATCH 1/6 V2] efi / ras: CCIX Memory " Jonathan Cameron
  2019-08-20 14:47 ` [PATCH 2/6 V2] efi / ras: CCIX Cache " Jonathan Cameron
@ 2019-08-20 14:47 ` " Jonathan Cameron
  2019-08-20 14:47 ` [PATCH 4/6 V2] efi / ras: CCIX Port " Jonathan Cameron
                   ` (3 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: Jonathan Cameron @ 2019-08-20 14:47 UTC (permalink / raw)
  To: linux-edac, linux-acpi, linux-efi, Borislav Petkov,
	Mauro Carvalho Chehab, james.morse
  Cc: rjw, tony.luck, linuxarm, ard.biesheuvel, nariman.poushin, jcm,
	linux-kernel, peter.maydell, Jonathan Cameron

CCIX devices tend to make heavy use of ATCs. The CCIX base
specification defines a protocol error message (PER) that
describes errors reported by such caches. The UEFI 2.8
specification includes a CCIX CPER record for firmware first
handling to report these errors to the operating system.

This patch is very similar to the support previously added
for CCIX Memory Errors and provides both logging and RAS
tracepoint for this error class.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 Changes since v1.
	Drop printing of vendor data to kernel log.
	
 drivers/acpi/apei/ghes.c         |  4 ++
 drivers/firmware/efi/cper-ccix.c | 72 ++++++++++++++++++++++++++++++++
 include/linux/cper.h             | 39 +++++++++++++++++
 include/ras/ras_event.h          | 67 +++++++++++++++++++++++++++++
 4 files changed, 182 insertions(+)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 5bda94e48b1b..a2ae9311ffee 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -508,6 +508,10 @@ static void ghes_handle_ccix_per(struct acpi_hest_generic_data *gdata, int sev)
 		trace_ccix_cache_error_event(payload, err_seq, sev,
 					     ccix_cache_err_ven_len_get(payload));
 		break;
+	case CCIX_ATC_ERROR:
+		trace_ccix_atc_error_event(payload, err_seq, sev,
+					   ccix_atc_err_ven_len_get(payload));
+		break;
 	default:
 		/* Unknown error type */
 		pr_info("CCIX error of unknown or vendor defined type\n");
diff --git a/drivers/firmware/efi/cper-ccix.c b/drivers/firmware/efi/cper-ccix.c
index fa3fafac402b..da8b7e1bb3a9 100644
--- a/drivers/firmware/efi/cper-ccix.c
+++ b/drivers/firmware/efi/cper-ccix.c
@@ -363,6 +363,31 @@ static int cper_ccix_cache_err_details(const char *pfx,
 	return 0;
 }
 
+static int cper_ccix_atc_err_details(const char *pfx,
+				     struct acpi_hest_generic_data *gdata)
+{
+	struct cper_ccix_atc_error *full_atc_err;
+	struct cper_sec_ccix_atc_error *atc_err;
+
+	if (gdata->error_data_length < sizeof(*full_atc_err))
+		return -ENOSPC;
+
+	full_atc_err = acpi_hest_get_payload(gdata);
+
+	atc_err = &full_atc_err->atc_record;
+
+	if (atc_err->validation_bits & CCIX_ATC_ERR_OP_VALID)
+		printk("%s""Operation: %s\n", pfx,
+		       cper_ccix_cache_err_op_str(atc_err->op_type));
+
+	if (atc_err->validation_bits & CCIX_ATC_ERR_INSTANCE_ID_VALID)
+		printk("%s""Instance ID: %d\n", pfx, atc_err->instance);
+
+	/* Vendor data is not printed to the kernel log */
+
+	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);
@@ -426,6 +451,8 @@ int cper_print_ccix_per(const char *pfx, struct acpi_hest_generic_data *gdata)
 		return cper_ccix_mem_err_details(pfx, gdata);
 	case CCIX_CACHE_ERROR:
 		return cper_ccix_cache_err_details(pfx, gdata);
+	case CCIX_ATC_ERROR:
+		return cper_ccix_atc_err_details(pfx, gdata);
 	default:
 		/* Vendor defined so no formatting be done */
 		break;
@@ -496,3 +523,48 @@ const char *cper_ccix_cache_err_unpack(struct trace_seq *p,
 
 	return ret;
 }
+
+void cper_ccix_atc_err_pack(const struct cper_sec_ccix_atc_error *atc_record,
+			    struct cper_ccix_atc_err_compact *catc_err,
+			    const u16 vendor_data_len,
+			    u8 *vendor_data)
+{
+	catc_err->validation_bits = atc_record->validation_bits;
+	catc_err->op_type = atc_record->op_type;
+	catc_err->instance = atc_record->instance;
+	memcpy(vendor_data, &atc_record->vendor_data[1], vendor_data_len);
+}
+
+static int cper_ccix_err_atc_location(struct cper_ccix_atc_err_compact *catc_err,
+				      char *msg)
+{
+	u32 len = CPER_REC_LEN - 1;
+	u32 n = 0;
+
+	if (!msg)
+		return 0;
+
+	if (catc_err->validation_bits & CCIX_ATC_ERR_OP_VALID)
+		n += snprintf(msg + n, len, "Op: %s ",
+			     cper_ccix_cache_err_op_str(catc_err->op_type));
+
+	if (catc_err->validation_bits & CCIX_ATC_ERR_INSTANCE_ID_VALID)
+		n += snprintf(msg + n, len, "Instance: %d ",
+			      catc_err->instance);
+
+	return n;
+}
+
+const char *cper_ccix_atc_err_unpack(struct trace_seq *p,
+				     struct cper_ccix_atc_err_compact *catc_err)
+{
+	const char *ret = trace_seq_buffer_ptr(p);
+
+	if (cper_ccix_err_atc_location(catc_err, rcd_decode_str))
+		trace_seq_printf(p, "%s", rcd_decode_str);
+
+	trace_seq_putc(p, '\0');
+
+	return ret;
+}
+
diff --git a/include/linux/cper.h b/include/linux/cper.h
index eef254b8b8b7..6bb603e9a97a 100644
--- a/include/linux/cper.h
+++ b/include/linux/cper.h
@@ -675,6 +675,38 @@ struct cper_ccix_cache_err_compact {
 	__u8	instance;
 };
 
+struct cper_sec_ccix_atc_error {
+	__u32	validation_bits;
+#define CCIX_ATC_ERR_OP_VALID			BIT(0)
+#define CCIX_ATC_ERR_INSTANCE_ID_VALID		BIT(1)
+#define CCIX_ATC_ERR_VENDOR_DATA_VALID		BIT(2)
+	__u16	length; /* Includes vendor specific log info */
+	__u8	op_type;
+	__u8	instance;
+	__u32	reserved;
+	__u32	vendor_data[];
+};
+
+struct cper_ccix_atc_error {
+	struct cper_sec_ccix_header header;
+	__u32 ccix_header[CCIX_PER_LOG_HEADER_DWS];
+	struct cper_sec_ccix_atc_error atc_record;
+};
+
+static inline u16 ccix_atc_err_ven_len_get(struct cper_ccix_atc_error *atc_err)
+{
+	if (atc_err->atc_record.validation_bits & CCIX_ATC_ERR_VENDOR_DATA_VALID)
+		return atc_err->atc_record.vendor_data[0] & 0xFFFF;
+	else
+		return 0;
+}
+
+struct cper_ccix_atc_err_compact {
+	__u32	validation_bits;
+	__u8	op_type;
+	__u8	instance;
+};
+
 /* Reset to default packing */
 #pragma pack()
 
@@ -706,6 +738,13 @@ const char *cper_ccix_cache_err_unpack(struct trace_seq *p,
 				       struct cper_ccix_cache_err_compact *ccache_err);
 const char *cper_ccix_cache_err_type_str(__u8 error_type);
 
+void cper_ccix_atc_err_pack(const struct cper_sec_ccix_atc_error *atc_record,
+			    struct cper_ccix_atc_err_compact *catc_err,
+			    const u16 vendor_data_len,
+			    u8 *vendor_data);
+const char *cper_ccix_atc_err_unpack(struct trace_seq *p,
+				     struct cper_ccix_atc_err_compact *catc_err);
+
 struct acpi_hest_generic_data;
 int cper_print_ccix_per(const char *pfx,
 			struct acpi_hest_generic_data *gdata);
diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h
index 55f2c1900c54..bab49e297551 100644
--- a/include/ras/ras_event.h
+++ b/include/ras/ras_event.h
@@ -481,6 +481,73 @@ TRACE_EVENT(ccix_cache_error_event,
 			    __entry->vendor_data_length)
 	)
 );
+
+TRACE_EVENT(ccix_atc_error_event,
+	TP_PROTO(struct cper_ccix_atc_error *err,
+		 u32 err_seq,
+		 u8 sev,
+		 u16 ven_len),
+
+	TP_ARGS(err, 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_atc_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,
+			err->ccix_header[1]);
+		if (err->header.validation_bits & 0x1)
+			__entry->source = err->header.source_id;
+		else
+			__entry->source = ~0;
+		__entry->component = FIELD_GET(CCIX_PER_LOG_DW1_COMP_TYPE_M,
+					       err->ccix_header[1]);
+		if (err->ccix_header[1] & CCIX_PER_LOG_DW1_ADDR_VAL_M) {
+			__entry->pa = (u64)err->ccix_header[2] << 32 |
+				(err->ccix_header[3] & 0xfffffffc);
+			__entry->pa_mask_lsb = err->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_atc_err_pack(&err->atc_record, &__entry->data,
+				       __entry->vendor_data_length,
+				       __get_dynamic_array(vendor_data));
+	),
+
+	TP_printk("{%d} %s CCIX PER ATC 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_atc_err_unpack(p, &__entry->data),
+		__print_hex(__get_dynamic_array(vendor_data), __entry->vendor_data_length)
+	)
+);
+
 /*
  * memory-failure recovery action result event
  *
-- 
2.20.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH 4/6 V2] efi / ras: CCIX Port error reporting
  2019-08-20 14:47 [PATCH 0/6 V2] CCIX Protocol error reporting Jonathan Cameron
                   ` (2 preceding siblings ...)
  2019-08-20 14:47 ` [PATCH 3/6 V2] efi / ras: CCIX Address Translation " Jonathan Cameron
@ 2019-08-20 14:47 ` " Jonathan Cameron
  2019-08-20 14:47 ` [PATCH 5/6 V2] efi / ras: CCIX Link " Jonathan Cameron
                   ` (2 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: Jonathan Cameron @ 2019-08-20 14:47 UTC (permalink / raw)
  To: linux-edac, linux-acpi, linux-efi, Borislav Petkov,
	Mauro Carvalho Chehab, james.morse
  Cc: rjw, tony.luck, linuxarm, ard.biesheuvel, nariman.poushin, jcm,
	linux-kernel, peter.maydell, Jonathan Cameron

The CCIX 1.0 base specification defines a CCIX protocol layer port.
The specification provides a mechanism for detailed error logging
for these ports.  The UEFI 2.8 specification includes a CCIX CPER
record for firmware first handling to report these errors to the
operating system.

This patch is very similar to the support previously added for
for CCIX Memory Errors and provides both logging and RAS tracepoint
for this error class.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 Changes since v1.
	Drop printing of vendor data to kernel log.

drivers/acpi/apei/ghes.c         |   4 ++
 drivers/firmware/efi/cper-ccix.c | 110 +++++++++++++++++++++++++++++++
 include/linux/cper.h             |  42 ++++++++++++
 include/ras/ras_event.h          |  66 +++++++++++++++++++
 4 files changed, 222 insertions(+)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index a2ae9311ffee..42b7d47c3454 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -512,6 +512,10 @@ static void ghes_handle_ccix_per(struct acpi_hest_generic_data *gdata, int sev)
 		trace_ccix_atc_error_event(payload, err_seq, sev,
 					   ccix_atc_err_ven_len_get(payload));
 		break;
+	case CCIX_PORT_ERROR:
+		trace_ccix_port_error_event(payload, err_seq, sev,
+					    ccix_port_err_ven_len_get(payload));
+		break;
 	default:
 		/* Unknown error type */
 		pr_info("CCIX error of unknown or vendor defined type\n");
diff --git a/drivers/firmware/efi/cper-ccix.c b/drivers/firmware/efi/cper-ccix.c
index da8b7e1bb3a9..8a815cf3b929 100644
--- a/drivers/firmware/efi/cper-ccix.c
+++ b/drivers/firmware/efi/cper-ccix.c
@@ -388,6 +388,68 @@ static int cper_ccix_atc_err_details(const char *pfx,
 	return 0;
 }
 
+static const char * const ccix_port_err_type_strs[] = {
+	"Generic Bus / Slave Error",
+	"Bus Parity / ECC Error",
+	"BDF Not Present",
+	"Invalid Address",
+	"Invalid AgentID",
+	"Bus Timeout",
+	"Hang",
+	"Egress Blocked",
+};
+
+static const char *cper_ccix_port_err_type_str(__u8 op)
+{
+	return op < ARRAY_SIZE(ccix_port_err_type_strs) ?
+		ccix_port_err_type_strs[op] : "Reserved";
+}
+
+static const char * const ccix_port_err_op_strs[] = {
+	"Command",
+	"Read",
+	"Write",
+};
+
+static const char *cper_ccix_port_err_op_str(__u8 op)
+{
+	return op < ARRAY_SIZE(ccix_port_err_op_strs) ?
+		ccix_port_err_op_strs[op] : "Reserved";
+}
+
+static int cper_ccix_port_err_details(const char *pfx,
+				     struct acpi_hest_generic_data *gdata)
+{
+	struct cper_ccix_port_error *full_port_err;
+	struct cper_sec_ccix_port_error *port_err;
+	int i;
+
+	if (gdata->error_data_length < sizeof(*full_port_err))
+		return -ENOSPC;
+
+	full_port_err = acpi_hest_get_payload(gdata);
+
+	port_err = &full_port_err->port_record;
+
+	if (port_err->validation_bits & CCIX_PORT_ERR_TYPE_VALID)
+		printk("%s""Error Type: %s\n", pfx,
+		       cper_ccix_port_err_type_str(port_err->err_type));
+
+	if (port_err->validation_bits & CCIX_PORT_ERR_OP_VALID)
+		printk("%s""Operation: %s\n", pfx,
+		       cper_ccix_port_err_op_str(port_err->op_type));
+
+	if (port_err->validation_bits & CCIX_PORT_ERR_MESSAGE_VALID) {
+		for (i = 0; i < ARRAY_SIZE(port_err->message); i++)
+			printk("%s""Message%d: 0x%08x\n", pfx, i,
+			       port_err->message[i]);
+	}
+
+	/* Vendor data is not printed to the kernel log */
+
+	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);
@@ -453,6 +515,8 @@ int cper_print_ccix_per(const char *pfx, struct acpi_hest_generic_data *gdata)
 		return cper_ccix_cache_err_details(pfx, gdata);
 	case CCIX_ATC_ERROR:
 		return cper_ccix_atc_err_details(pfx, gdata);
+	case CCIX_PORT_ERROR:
+		return cper_ccix_port_err_details(pfx, gdata);
 	default:
 		/* Vendor defined so no formatting be done */
 		break;
@@ -568,3 +632,49 @@ const char *cper_ccix_atc_err_unpack(struct trace_seq *p,
 	return ret;
 }
 
+void cper_ccix_port_err_pack(const struct cper_sec_ccix_port_error *port_record,
+			     struct cper_ccix_port_err_compact *cport_err,
+			     const u16 vendor_data_len,
+			     u8 *vendor_data)
+{
+	cport_err->validation_bits = port_record->validation_bits;
+	cport_err->err_type = port_record->err_type;
+	cport_err->op_type = port_record->op_type;
+	memcpy(cport_err->message, port_record->message,
+	       sizeof(cport_err->message));
+	memcpy(vendor_data, &port_record->vendor_data[1], vendor_data_len);
+}
+
+static int cper_ccix_err_port_location(struct cper_ccix_port_err_compact *cport_err,
+				       char *msg)
+{
+	u32 len = CPER_REC_LEN - 1;
+	u32 n = 0;
+
+	if (!msg)
+		return 0;
+
+	if (cport_err->validation_bits & CCIX_PORT_ERR_TYPE_VALID)
+		n += snprintf(msg + n, len, "Error Type: %s ",
+			      cper_ccix_port_err_type_str(cport_err->err_type));
+
+
+	if (cport_err->validation_bits & CCIX_PORT_ERR_OP_VALID)
+		n += snprintf(msg + n, len, "Op: %s ",
+			     cper_ccix_port_err_op_str(cport_err->op_type));
+
+	return n;
+}
+
+const char *cper_ccix_port_err_unpack(struct trace_seq *p,
+				      struct cper_ccix_port_err_compact *cport_err)
+{
+	const char *ret = trace_seq_buffer_ptr(p);
+
+	if (cper_ccix_err_port_location(cport_err, rcd_decode_str))
+		trace_seq_printf(p, "%s", rcd_decode_str);
+
+	trace_seq_putc(p, '\0');
+
+	return ret;
+}
diff --git a/include/linux/cper.h b/include/linux/cper.h
index 6bb603e9a97a..5e315afc210e 100644
--- a/include/linux/cper.h
+++ b/include/linux/cper.h
@@ -707,6 +707,41 @@ struct cper_ccix_atc_err_compact {
 	__u8	instance;
 };
 
+
+struct cper_sec_ccix_port_error {
+	__u32	validation_bits;
+#define CCIX_PORT_ERR_OP_VALID			BIT(0)
+#define CCIX_PORT_ERR_TYPE_VALID		BIT(1)
+#define CCIX_PORT_ERR_MESSAGE_VALID		BIT(2)
+#define CCIX_PORT_ERR_VENDOR_DATA_VALID		BIT(3)
+	__u16	length; /* Includes vendor specific log info */
+	__u8	op_type;
+	__u8	err_type;
+	__u32	message[8];
+	__u32	vendor_data[];
+};
+
+struct cper_ccix_port_error {
+	struct cper_sec_ccix_header header;
+	__u32 ccix_header[CCIX_PER_LOG_HEADER_DWS];
+	struct cper_sec_ccix_port_error port_record;
+};
+
+static inline u16 ccix_port_err_ven_len_get(struct cper_ccix_port_error *port_err)
+{
+	if (port_err->port_record.validation_bits & CCIX_PORT_ERR_VENDOR_DATA_VALID)
+		return port_err->port_record.vendor_data[0] & 0xFFFF;
+	else
+		return 0;
+}
+
+struct cper_ccix_port_err_compact {
+	__u32	validation_bits;
+	__u32	message[8];
+	__u8	err_type;
+	__u8	op_type;
+};
+
 /* Reset to default packing */
 #pragma pack()
 
@@ -745,6 +780,13 @@ void cper_ccix_atc_err_pack(const struct cper_sec_ccix_atc_error *atc_record,
 const char *cper_ccix_atc_err_unpack(struct trace_seq *p,
 				     struct cper_ccix_atc_err_compact *catc_err);
 
+void cper_ccix_port_err_pack(const struct cper_sec_ccix_port_error *port_record,
+			     struct cper_ccix_port_err_compact *cport_err,
+			     const u16 vendor_data_len,
+			     u8 *vendor_data);
+const char *cper_ccix_port_err_unpack(struct trace_seq *p,
+				      struct cper_ccix_port_err_compact *cport_err);
+
 struct acpi_hest_generic_data;
 int cper_print_ccix_per(const char *pfx,
 			struct acpi_hest_generic_data *gdata);
diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h
index bab49e297551..52ac3f2d4c11 100644
--- a/include/ras/ras_event.h
+++ b/include/ras/ras_event.h
@@ -548,6 +548,72 @@ TRACE_EVENT(ccix_atc_error_event,
 	)
 );
 
+TRACE_EVENT(ccix_port_error_event,
+	TP_PROTO(struct cper_ccix_port_error *err,
+		 u32 err_seq,
+		 u8 sev,
+		 u16 ven_len),
+
+	TP_ARGS(err, 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_port_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,
+			err->ccix_header[1]);
+		if (err->header.validation_bits & 0x1)
+			__entry->source = err->header.source_id;
+		else
+			__entry->source = ~0;
+
+		__entry->component = FIELD_GET(CCIX_PER_LOG_DW1_COMP_TYPE_M,
+					       err->ccix_header[1]);
+		if (err->ccix_header[1] & CCIX_PER_LOG_DW1_ADDR_VAL_M) {
+			__entry->pa = (u64)err->ccix_header[2] << 32 |
+				(err->ccix_header[3] & 0xfffffffc);
+			__entry->pa_mask_lsb = err->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_port_err_pack(&err->port_record, &__entry->data,
+					__entry->vendor_data_length,
+					__get_dynamic_array(vendor_data));
+	),
+
+	TP_printk("{%d} %s CCIX PER Port 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_port_err_unpack(p, &__entry->data),
+		__print_hex(__get_dynamic_array(vendor_data), __entry->vendor_data_length)
+	)
+);
+
 /*
  * memory-failure recovery action result event
  *
-- 
2.20.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH 5/6 V2] efi / ras: CCIX Link error reporting
  2019-08-20 14:47 [PATCH 0/6 V2] CCIX Protocol error reporting Jonathan Cameron
                   ` (3 preceding siblings ...)
  2019-08-20 14:47 ` [PATCH 4/6 V2] efi / ras: CCIX Port " Jonathan Cameron
@ 2019-08-20 14:47 ` " Jonathan Cameron
  2019-08-20 14:47 ` [PATCH 6/6 V2] efi / ras: CCIX Agent internal " Jonathan Cameron
  2019-08-27 13:44 ` [PATCH 0/6 V2] CCIX Protocol " Thomas Gleixner
  6 siblings, 0 replies; 8+ messages in thread
From: Jonathan Cameron @ 2019-08-20 14:47 UTC (permalink / raw)
  To: linux-edac, linux-acpi, linux-efi, Borislav Petkov,
	Mauro Carvalho Chehab, james.morse
  Cc: rjw, tony.luck, linuxarm, ard.biesheuvel, nariman.poushin, jcm,
	linux-kernel, peter.maydell, Jonathan Cameron

The CCIX 1.0 Base Specification defines a protocol layer
CCIX link and related error reporting mechanism.
The UEFI 2.8 specification includes a CCIX CPER record for
firmware first handling to report these errors to the
operating system.

This patch is very similar to the support previously added
for CCIX Memory Errors and provides both logging and RAS
tracepoint for this error class.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 Changes since v1.
	Drop printing of vendor data to kernel log.

 drivers/acpi/apei/ghes.c         |   4 +
 drivers/firmware/efi/cper-ccix.c | 125 +++++++++++++++++++++++++++++++
 include/linux/cper.h             |  48 ++++++++++++
 include/ras/ras_event.h          |  65 ++++++++++++++++
 4 files changed, 242 insertions(+)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 42b7d47c3454..3cdca0c0f4ae 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -516,6 +516,10 @@ static void ghes_handle_ccix_per(struct acpi_hest_generic_data *gdata, int sev)
 		trace_ccix_port_error_event(payload, err_seq, sev,
 					    ccix_port_err_ven_len_get(payload));
 		break;
+	case CCIX_LINK_ERROR:
+		trace_ccix_link_error_event(payload, err_seq, sev,
+					    ccix_link_err_ven_len_get(payload));
+		break;
 	default:
 		/* Unknown error type */
 		pr_info("CCIX error of unknown or vendor defined type\n");
diff --git a/drivers/firmware/efi/cper-ccix.c b/drivers/firmware/efi/cper-ccix.c
index 8a815cf3b929..5820a58ec382 100644
--- a/drivers/firmware/efi/cper-ccix.c
+++ b/drivers/firmware/efi/cper-ccix.c
@@ -450,6 +450,71 @@ static int cper_ccix_port_err_details(const char *pfx,
 	return 0;
 }
 
+static const char * const ccix_link_err_type_strs[] = {
+	"Generic Error",
+	"Credit Underflow",
+	"Credit Overflow",
+	"Unusable Credit Received",
+	"Link Credit Timeout",
+};
+
+static const char *cper_ccix_link_err_type_str(__u8 op)
+{
+	return op < ARRAY_SIZE(ccix_link_err_type_strs) ?
+		ccix_link_err_type_strs[op] : "Reserved";
+}
+
+static const char * const ccix_link_credit_type_strs[] = {
+	"Memory",
+	"Snoop",
+	"Data",
+	"Misc",
+};
+
+static const char *cper_ccix_link_credit_type_str(__u8 op)
+{
+	return op < ARRAY_SIZE(ccix_link_credit_type_strs) ?
+		ccix_link_credit_type_strs[op] : "Reserved";
+}
+
+static int cper_ccix_link_err_details(const char *pfx,
+				     struct acpi_hest_generic_data *gdata)
+{
+	struct cper_ccix_link_error *full_link_err;
+	struct cper_sec_ccix_link_error *link_err;
+	int i;
+
+	if (gdata->error_data_length < sizeof(*full_link_err))
+		return -ENOSPC;
+
+	full_link_err = acpi_hest_get_payload(gdata);
+
+	link_err = &full_link_err->link_record;
+
+	if (link_err->validation_bits & CCIX_LINK_ERR_TYPE_VALID)
+		printk("%s""Error Type: %s\n", pfx,
+		       cper_ccix_link_err_type_str(link_err->err_type));
+
+	if (link_err->validation_bits & CCIX_LINK_ERR_OP_VALID)
+		printk("%s""Operation: %s\n", pfx,
+		       cper_ccix_port_err_op_str(link_err->op_type));
+
+	if (link_err->validation_bits & CCIX_LINK_ERR_LINK_ID_VALID)
+		printk("%s""Link ID: %d\n", pfx, link_err->link_id);
+
+	if (link_err->validation_bits & CCIX_LINK_ERR_CREDIT_TYPE_VALID)
+		printk("%s""Credit Type: %s\n", pfx,
+		       cper_ccix_link_credit_type_str(link_err->credit_type));
+
+	if (link_err->validation_bits & CCIX_LINK_ERR_MESSAGE_VALID) {
+		for (i = 0; i < ARRAY_SIZE(link_err->message); i++)
+			printk("%s""Message%d: 0x%08x\n", pfx, i, link_err->message[i]);
+	}
+	/* Vendor data is not printed to the kernel log */
+
+	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);
@@ -517,6 +582,8 @@ int cper_print_ccix_per(const char *pfx, struct acpi_hest_generic_data *gdata)
 		return cper_ccix_atc_err_details(pfx, gdata);
 	case CCIX_PORT_ERROR:
 		return cper_ccix_port_err_details(pfx, gdata);
+	case CCIX_LINK_ERROR:
+		return cper_ccix_link_err_details(pfx, gdata);
 	default:
 		/* Vendor defined so no formatting be done */
 		break;
@@ -678,3 +745,61 @@ const char *cper_ccix_port_err_unpack(struct trace_seq *p,
 
 	return ret;
 }
+
+void cper_ccix_link_err_pack(const struct cper_sec_ccix_link_error *link_record,
+			     struct cper_ccix_link_err_compact *clink_err,
+			     const u16 vendor_data_len,
+			     u8 *vendor_data)
+{
+	clink_err->validation_bits = link_record->validation_bits;
+	clink_err->err_type = link_record->err_type;
+	clink_err->op_type = link_record->op_type;
+	clink_err->link_id = link_record->link_id;
+	clink_err->credit_type = link_record->credit_type;
+	memcpy(clink_err->message, link_record->message,
+	       sizeof(clink_err->message));
+
+	memcpy(vendor_data, &link_record->vendor_data[1], vendor_data_len);
+}
+
+static int cper_ccix_err_link_location(struct cper_ccix_link_err_compact *clink_err,
+				       char *msg)
+{
+	u32 len = CPER_REC_LEN - 1;
+	u32 n = 0;
+
+	if (!msg)
+		return 0;
+
+	if (clink_err->validation_bits & CCIX_LINK_ERR_TYPE_VALID)
+		n += snprintf(msg + n, len, "Error Type: %s ",
+			      cper_ccix_link_err_type_str(clink_err->err_type));
+
+
+	if (clink_err->validation_bits & CCIX_LINK_ERR_OP_VALID)
+		n += snprintf(msg + n, len, "Op: %s ",
+			     cper_ccix_port_err_op_str(clink_err->op_type));
+
+	if (clink_err->validation_bits & CCIX_LINK_ERR_LINK_ID_VALID)
+		n += snprintf(msg + n, len, "Link ID: %d ", clink_err->link_id);
+
+	if (clink_err->validation_bits & CCIX_LINK_ERR_CREDIT_TYPE_VALID)
+		n += snprintf(msg + n, len, "Credit Type: %s ",
+			      cper_ccix_link_credit_type_str(clink_err->credit_type));
+
+	/* MESSAGE TODO */
+	return n;
+}
+
+const char *cper_ccix_link_err_unpack(struct trace_seq *p,
+				      struct cper_ccix_link_err_compact *clink_err)
+{
+	const char *ret = trace_seq_buffer_ptr(p);
+
+	if (cper_ccix_err_link_location(clink_err, rcd_decode_str))
+		trace_seq_printf(p, "%s", rcd_decode_str);
+
+	trace_seq_putc(p, '\0');
+
+	return ret;
+}
diff --git a/include/linux/cper.h b/include/linux/cper.h
index 5e315afc210e..d35be55351e3 100644
--- a/include/linux/cper.h
+++ b/include/linux/cper.h
@@ -742,6 +742,47 @@ struct cper_ccix_port_err_compact {
 	__u8	op_type;
 };
 
+struct cper_sec_ccix_link_error {
+	__u32	validation_bits;
+#define CCIX_LINK_ERR_OP_VALID			BIT(0)
+#define CCIX_LINK_ERR_TYPE_VALID		BIT(1)
+#define CCIX_LINK_ERR_LINK_ID_VALID		BIT(2)
+#define CCIX_LINK_ERR_CREDIT_TYPE_VALID		BIT(3)
+#define CCIX_LINK_ERR_MESSAGE_VALID		BIT(4)
+#define CCIX_LINK_ERR_VENDOR_DATA_VALID		BIT(5)
+	__u16	length; /* Includes vendor specific log info */
+	__u8	op_type;
+	__u8	err_type;
+	__u8	link_id;
+	__u8	credit_type;
+	__u16	reserved;
+	__u32	message[8];
+	__u32	vendor_data[];
+};
+
+struct cper_ccix_link_error {
+	struct cper_sec_ccix_header header;
+	__u32 ccix_header[CCIX_PER_LOG_HEADER_DWS];
+	struct cper_sec_ccix_link_error link_record;
+};
+
+static inline u16 ccix_link_err_ven_len_get(struct cper_ccix_link_error *link_err)
+{
+	if (link_err->link_record.validation_bits & CCIX_LINK_ERR_VENDOR_DATA_VALID)
+		return link_err->link_record.vendor_data[0] & 0xFFFF;
+	else
+		return 0;
+}
+
+struct cper_ccix_link_err_compact {
+	__u32	validation_bits;
+	__u32	message[8];
+	__u8	err_type;
+	__u8	op_type;
+	__u8	link_id;
+	__u8	credit_type;
+};
+
 /* Reset to default packing */
 #pragma pack()
 
@@ -787,6 +828,13 @@ void cper_ccix_port_err_pack(const struct cper_sec_ccix_port_error *port_record,
 const char *cper_ccix_port_err_unpack(struct trace_seq *p,
 				      struct cper_ccix_port_err_compact *cport_err);
 
+void cper_ccix_link_err_pack(const struct cper_sec_ccix_link_error *link_record,
+			     struct cper_ccix_link_err_compact *clink_err,
+			     const u16 vendor_data_len,
+			     u8 *vendor_data);
+const char *cper_ccix_link_err_unpack(struct trace_seq *p,
+				      struct cper_ccix_link_err_compact *clink_err);
+
 struct acpi_hest_generic_data;
 int cper_print_ccix_per(const char *pfx,
 			struct acpi_hest_generic_data *gdata);
diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h
index 52ac3f2d4c11..bfe1c64b9db0 100644
--- a/include/ras/ras_event.h
+++ b/include/ras/ras_event.h
@@ -614,6 +614,71 @@ TRACE_EVENT(ccix_port_error_event,
 	)
 );
 
+TRACE_EVENT(ccix_link_error_event,
+	TP_PROTO(struct cper_ccix_link_error *err,
+		 u32 err_seq,
+		 u8 sev, u16 ven_len),
+
+	TP_ARGS(err, 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_link_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,
+			err->ccix_header[1]);
+		if (err->header.validation_bits & 0x1)
+			__entry->source = err->header.source_id;
+		else
+			__entry->source = ~0;
+		__entry->component = FIELD_GET(CCIX_PER_LOG_DW1_COMP_TYPE_M,
+						   err->ccix_header[1]);
+		if (err->ccix_header[1] & CCIX_PER_LOG_DW1_ADDR_VAL_M) {
+			__entry->pa = (u64)err->ccix_header[2] << 32 |
+				(err->ccix_header[3] & 0xfffffffc);
+			__entry->pa_mask_lsb = err->ccix_header[4] & 0xff;
+		} else {
+			__entry->pa = ~0ull;
+			__entry->pa_mask_lsb = ~0;
+		}
+		/* Do not store the vendor data header length */
+		__entry->vendor_data_length = ven_len ? ven_len - 4 : 0;
+		cper_ccix_link_err_pack(&err->link_record, &__entry->data,
+					__entry->vendor_data_length,
+					__get_dynamic_array(vendor_data));
+	),
+
+	TP_printk("{%d} %s CCIX PER Link 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_link_err_unpack(p, &__entry->data),
+		__print_hex(__get_dynamic_array(vendor_data), __entry->vendor_data_length)
+	)
+);
+
 /*
  * memory-failure recovery action result event
  *
-- 
2.20.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH 6/6 V2] efi / ras: CCIX Agent internal error reporting
  2019-08-20 14:47 [PATCH 0/6 V2] CCIX Protocol error reporting Jonathan Cameron
                   ` (4 preceding siblings ...)
  2019-08-20 14:47 ` [PATCH 5/6 V2] efi / ras: CCIX Link " Jonathan Cameron
@ 2019-08-20 14:47 ` " Jonathan Cameron
  2019-08-27 13:44 ` [PATCH 0/6 V2] CCIX Protocol " Thomas Gleixner
  6 siblings, 0 replies; 8+ messages in thread
From: Jonathan Cameron @ 2019-08-20 14:47 UTC (permalink / raw)
  To: linux-edac, linux-acpi, linux-efi, Borislav Petkov,
	Mauro Carvalho Chehab, james.morse
  Cc: rjw, tony.luck, linuxarm, ard.biesheuvel, nariman.poushin, jcm,
	linux-kernel, peter.maydell, Jonathan Cameron

The CCIX 1.0 Base specification defines an internal agent error,
for which the specific data present afte the header is vendor
defined.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 Changes since v1.
	Drop printing of vendor data to kernel log.

 drivers/acpi/apei/ghes.c         |  4 ++
 drivers/firmware/efi/cper-ccix.c | 12 ++++++
 include/linux/cper.h             | 29 +++++++++++++++
 include/ras/ras_event.h          | 64 ++++++++++++++++++++++++++++++++
 4 files changed, 109 insertions(+)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 3cdca0c0f4ae..f7b3c4777df3 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -520,6 +520,10 @@ static void ghes_handle_ccix_per(struct acpi_hest_generic_data *gdata, int sev)
 		trace_ccix_link_error_event(payload, err_seq, sev,
 					    ccix_link_err_ven_len_get(payload));
 		break;
+	case CCIX_AGENT_INTERNAL_ERROR:
+		trace_ccix_agent_error_event(payload, err_seq, sev,
+					     ccix_agent_err_ven_len_get(payload));
+		break;
 	default:
 		/* Unknown error type */
 		pr_info("CCIX error of unknown or vendor defined type\n");
diff --git a/drivers/firmware/efi/cper-ccix.c b/drivers/firmware/efi/cper-ccix.c
index 5820a58ec382..b2ad55291dc4 100644
--- a/drivers/firmware/efi/cper-ccix.c
+++ b/drivers/firmware/efi/cper-ccix.c
@@ -584,6 +584,9 @@ int cper_print_ccix_per(const char *pfx, struct acpi_hest_generic_data *gdata)
 		return cper_ccix_port_err_details(pfx, gdata);
 	case CCIX_LINK_ERROR:
 		return cper_ccix_link_err_details(pfx, gdata);
+	case CCIX_AGENT_INTERNAL_ERROR:
+		/* Agent errors contain only vendor data, so nothing to do here */
+		return 0;
 	default:
 		/* Vendor defined so no formatting be done */
 		break;
@@ -803,3 +806,12 @@ const char *cper_ccix_link_err_unpack(struct trace_seq *p,
 
 	return ret;
 }
+
+void cper_ccix_agent_err_pack(const struct cper_sec_ccix_agent_err *agent_record,
+			      struct cper_ccix_agent_err_compact *cagent_err,
+			      const u16 vendor_data_len,
+			      u8 *vendor_data)
+{
+	cagent_err->validation_bits = agent_record->validation_bits;
+	memcpy(vendor_data, &agent_record->vendor_data[1], vendor_data_len);
+}
diff --git a/include/linux/cper.h b/include/linux/cper.h
index d35be55351e3..373c1d387a70 100644
--- a/include/linux/cper.h
+++ b/include/linux/cper.h
@@ -783,6 +783,30 @@ struct cper_ccix_link_err_compact {
 	__u8	credit_type;
 };
 
+struct cper_sec_ccix_agent_err {
+	__u32	validation_bits;
+#define CCIX_AGENT_INTERNAL_ERR_VENDOR_DATA_VALID	BIT(0)
+	__u32	vendor_data[];
+};
+
+struct cper_ccix_agent_err {
+	struct cper_sec_ccix_header header;
+	__u32 ccix_header[CCIX_PER_LOG_HEADER_DWS];
+	struct cper_sec_ccix_agent_err agent_record;
+};
+
+static inline u16 ccix_agent_err_ven_len_get(struct cper_ccix_agent_err *agent_err)
+{
+	if (agent_err->agent_record.validation_bits & CCIX_AGENT_INTERNAL_ERR_VENDOR_DATA_VALID)
+		return agent_err->agent_record.vendor_data[0] & 0xFFFF;
+	else
+		return 0;
+}
+
+struct cper_ccix_agent_err_compact {
+	__u32	validation_bits;
+};
+
 /* Reset to default packing */
 #pragma pack()
 
@@ -835,6 +859,11 @@ void cper_ccix_link_err_pack(const struct cper_sec_ccix_link_error *link_record,
 const char *cper_ccix_link_err_unpack(struct trace_seq *p,
 				      struct cper_ccix_link_err_compact *clink_err);
 
+void cper_ccix_agent_err_pack(const struct cper_sec_ccix_agent_err *agent_record,
+			      struct cper_ccix_agent_err_compact *cagent_err,
+			      const u16 vendor_data_len,
+			      u8 *vendor_data);
+
 struct acpi_hest_generic_data;
 int cper_print_ccix_per(const char *pfx,
 			struct acpi_hest_generic_data *gdata);
diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h
index bfe1c64b9db0..d09e5389a1e6 100644
--- a/include/ras/ras_event.h
+++ b/include/ras/ras_event.h
@@ -679,6 +679,70 @@ TRACE_EVENT(ccix_link_error_event,
 	)
 );
 
+TRACE_EVENT(ccix_agent_error_event,
+	TP_PROTO(struct cper_ccix_agent_err *err,
+		 u32 err_seq,
+		 u8 sev, u16 ven_len),
+
+	TP_ARGS(err, 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(u16, vendor_data_length)
+		__field_struct(struct cper_ccix_agent_err_compact, data)
+		__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,
+			err->ccix_header[1]);
+		if (err->header.validation_bits & 0x1)
+			__entry->source = err->header.source_id;
+		else
+			__entry->source = ~0;
+		__entry->component = FIELD_GET(CCIX_PER_LOG_DW1_COMP_TYPE_M,
+						   err->ccix_header[1]);
+		if (err->ccix_header[1] & CCIX_PER_LOG_DW1_ADDR_VAL_M) {
+			__entry->pa = (u64)err->ccix_header[2] << 32 |
+				(err->ccix_header[3] & 0xfffffffc);
+			__entry->pa_mask_lsb = err->ccix_header[4] & 0xff;
+		} else {
+			__entry->pa = ~0ull;
+			__entry->pa_mask_lsb = ~0;
+		}
+		/* Do not store the vendor data header length */
+		__entry->vendor_data_length = ven_len ? ven_len - 4 : 0;
+		cper_ccix_agent_err_pack(&err->agent_record, &__entry->data,
+					__entry->vendor_data_length,
+					__get_dynamic_array(vendor_data));
+	),
+
+	TP_printk("{%d} %s CCIX PER Agent Internal Error in %s SevUE:%d SevNoComm:%d SevDegraded:%d SevDeferred:%d physical addr: %016llx (mask: %x) 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,
+		__print_hex(__get_dynamic_array(vendor_data), __entry->vendor_data_length)
+	)
+);
+
 /*
  * memory-failure recovery action result event
  *
-- 
2.20.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH 0/6 V2] CCIX Protocol error reporting.
  2019-08-20 14:47 [PATCH 0/6 V2] CCIX Protocol error reporting Jonathan Cameron
                   ` (5 preceding siblings ...)
  2019-08-20 14:47 ` [PATCH 6/6 V2] efi / ras: CCIX Agent internal " Jonathan Cameron
@ 2019-08-27 13:44 ` " Thomas Gleixner
  6 siblings, 0 replies; 8+ messages in thread
From: Thomas Gleixner @ 2019-08-27 13:44 UTC (permalink / raw)
  To: Jonathan Cameron
  Cc: linux-edac, linux-acpi, linux-efi, Borislav Petkov,
	Mauro Carvalho Chehab, james.morse, rjw, Tony Luck, linuxarm,
	ard.biesheuvel, nariman.poushin, Jon Masters, LKML,
	peter.maydell, linux-spdx, Greg KH

[-- Attachment #1: Type: text/plain, Size: 1644 bytes --]

Jonathan,

On Tue, 20 Aug 2019, Jonathan Cameron wrote:

Cc+ linux-spdx@vger.kernel.org

> The following boilerplate is granting rights to the kernel.
> Note that I haven't applied the CCIX copyright notice anywhere in this
> series because we aren't quoting from the specification.  That is
> much more likely to happen in documentation patches than in code.
> 
> Like anything else in this series it is open to comment.
> 
> This patch is being distributed by the CCIX Consortium, Inc. (CCIX) to
> you and other parties that are participating (the "participants") in the
> Linux kernel with the understanding that the participants will use CCIX's
> name and trademark only when this patch is used in association with the
> Linux kernel and associated user space.

The code is licensed under GPLV2, so what precludes any other GPLV2 project
to import that code?

If there is a mentioning of CCIX Consortium in the imported code then you
cannot impose that this needs to be removed because it ends up in something
which is neither Linux kernel nor associated user space. And that's
especially true when this ends up being a copyright notice.
 
> CCIX is also distributing this patch to these participants with the
> understanding that if any portion of the CCIX specification will be
> used or referenced in the Linux kernel, the participants will not modify
> the cited portion of the CCIX specification and will give CCIX proper
> copyright attribution by including the following copyright notice with
> the cited part of the CCIX specification:
> "© 2019 CCIX CONSORTIUM, INC. ALL RIGHTS RESERVED."

Just to prove the point.

Thanks,

	tglx

^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, back to index

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-08-20 14:47 [PATCH 0/6 V2] CCIX Protocol error reporting Jonathan Cameron
2019-08-20 14:47 ` [PATCH 1/6 V2] efi / ras: CCIX Memory " Jonathan Cameron
2019-08-20 14:47 ` [PATCH 2/6 V2] efi / ras: CCIX Cache " Jonathan Cameron
2019-08-20 14:47 ` [PATCH 3/6 V2] efi / ras: CCIX Address Translation " Jonathan Cameron
2019-08-20 14:47 ` [PATCH 4/6 V2] efi / ras: CCIX Port " Jonathan Cameron
2019-08-20 14:47 ` [PATCH 5/6 V2] efi / ras: CCIX Link " Jonathan Cameron
2019-08-20 14:47 ` [PATCH 6/6 V2] efi / ras: CCIX Agent internal " Jonathan Cameron
2019-08-27 13:44 ` [PATCH 0/6 V2] CCIX Protocol " Thomas Gleixner

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