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Message-ID: <20240109034755.100555-2-Smita.KoralahalliChannabasappa@amd.com>
Date: Tue, 9 Jan 2024 03:47:52 +0000
From: Smita Koralahalli <Smita.KoralahalliChannabasappa@....com>
To: <linux-efi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-cxl@...r.kernel.org>
CC: Ard Biesheuvel <ardb@...nel.org>, Alison Schofield
<alison.schofield@...el.com>, Vishal Verma <vishal.l.verma@...el.com>, "Ira
Weiny" <ira.weiny@...el.com>, Dan Williams <dan.j.williams@...el.com>,
Jonathan Cameron <Jonathan.Cameron@...wei.com>, Yazen Ghannam
<yazen.ghannam@....com>, Smita Koralahalli
<Smita.KoralahalliChannabasappa@....com>
Subject: [PATCH v2 1/4] acpi/ghes, cxl: Create a common CXL struct to handle different CXL CPER records
Currently defined cxl_cper_callback interface between CXL subsystem and
GHES module is just confined to handling CXL Component errors only.
Extend this callback to process CXL Protocol errors as well. Achieve
by defining a new struct cxl_cper_event_info to include cxl_cper_event_rec
and other fields of CXL protocol errors which will be defined in future
patches.
Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@....com>
---
v2:
cxl_cper_rec_data -> cxl_cper_event_info
data -> info
---
drivers/acpi/apei/ghes.c | 6 +++++-
drivers/cxl/pci.c | 8 ++++----
include/linux/cxl-event.h | 6 +++++-
3 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index aed465d2fd68..60b615d361d3 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -693,6 +693,10 @@ static cxl_cper_callback cper_callback;
static void cxl_cper_post_event(enum cxl_event_type event_type,
struct cxl_cper_event_rec *rec)
{
+ struct cxl_cper_event_info info;
+
+ info.rec = *(struct cxl_cper_event_rec *)rec;
+
if (rec->hdr.length <= sizeof(rec->hdr) ||
rec->hdr.length > sizeof(*rec)) {
pr_err(FW_WARN "CXL CPER Invalid section length (%u)\n",
@@ -707,7 +711,7 @@ static void cxl_cper_post_event(enum cxl_event_type event_type,
guard(rwsem_read)(&cxl_cper_rw_sem);
if (cper_callback)
- cper_callback(event_type, rec);
+ cper_callback(event_type, &info);
}
int cxl_cper_register_callback(cxl_cper_callback callback)
diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index b14237f824cf..1ad240ead4fd 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -972,9 +972,9 @@ static struct pci_driver cxl_pci_driver = {
#define CXL_EVENT_HDR_FLAGS_REC_SEVERITY GENMASK(1, 0)
static void cxl_cper_event_call(enum cxl_event_type ev_type,
- struct cxl_cper_event_rec *rec)
+ struct cxl_cper_event_info *info)
{
- struct cper_cxl_event_devid *device_id = &rec->hdr.device_id;
+ struct cper_cxl_event_devid *device_id = &info->rec.hdr.device_id;
struct pci_dev *pdev __free(pci_dev_put) = NULL;
enum cxl_event_log_type log_type;
struct cxl_dev_state *cxlds;
@@ -996,11 +996,11 @@ static void cxl_cper_event_call(enum cxl_event_type ev_type,
return;
/* Fabricate a log type */
- hdr_flags = get_unaligned_le24(rec->event.generic.hdr.flags);
+ hdr_flags = get_unaligned_le24(info->rec.event.generic.hdr.flags);
log_type = FIELD_GET(CXL_EVENT_HDR_FLAGS_REC_SEVERITY, hdr_flags);
cxl_event_trace_record(cxlds->cxlmd, log_type, ev_type,
- &uuid_null, &rec->event);
+ &uuid_null, &info->rec.event);
}
static int __init cxl_pci_driver_init(void)
diff --git a/include/linux/cxl-event.h b/include/linux/cxl-event.h
index 17eadee819b6..6ce839c59749 100644
--- a/include/linux/cxl-event.h
+++ b/include/linux/cxl-event.h
@@ -141,8 +141,12 @@ struct cxl_cper_event_rec {
union cxl_event event;
} __packed;
+struct cxl_cper_event_info {
+ struct cxl_cper_event_rec rec;
+};
+
typedef void (*cxl_cper_callback)(enum cxl_event_type type,
- struct cxl_cper_event_rec *rec);
+ struct cxl_cper_event_info *info);
#ifdef CONFIG_ACPI_APEI_GHES
int cxl_cper_register_callback(cxl_cper_callback callback);
--
2.17.1
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