[PATCH v5 1/6] cxl/events: Update Common Event Record to CXL spec rev 3.1

shiju.jose
2025-01-10T11:56:16Z

From: Shiju Jose <shiju.jose@huawei.com>

CXL spec 3.1 section 8.2.9.2.1 Table 8-42, Common Event Record format has
updated with Maintenance Operation Subclass information.

Add updates for the above spec change in the CXL events record and CXL
common trace event implementations.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
---
drivers/cxl/core/trace.h | 13 +++++++++----
include/cxl/event.h | 3 ++-
2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/cxl/core/trace.h b/drivers/cxl/core/trace.h
index 8389a94adb1a..7305974e2301 100644
--- a/drivers/cxl/core/trace.h
+++ b/drivers/cxl/core/trace.h
@@ -166,11 +166,13 @@ TRACE_EVENT(cxl_overflow,
#define CXL_EVENT_RECORD_FLAG_MAINT_NEEDED BIT(3)
#define CXL_EVENT_RECORD_FLAG_PERF_DEGRADED BIT(4)
#define CXL_EVENT_RECORD_FLAG_HW_REPLACE BIT(5)
+#define CXL_EVENT_RECORD_FLAG_MAINT_OP_SUB_CLASS_VALID BIT(6)
#define show_hdr_flags(flags) __print_flags(flags, " | ", \
{ CXL_EVENT_RECORD_FLAG_PERMANENT, "PERMANENT_CONDITION" }, \
{ CXL_EVENT_RECORD_FLAG_MAINT_NEEDED, "MAINTENANCE_NEEDED" }, \
{ CXL_EVENT_RECORD_FLAG_PERF_DEGRADED, "PERFORMANCE_DEGRADED" }, \
- { CXL_EVENT_RECORD_FLAG_HW_REPLACE, "HARDWARE_REPLACEMENT_NEEDED" } \
+ { CXL_EVENT_RECORD_FLAG_HW_REPLACE, "HARDWARE_REPLACEMENT_NEEDED" }, \
+ { CXL_EVENT_RECORD_FLAG_MAINT_OP_SUB_CLASS_VALID, "MAINT_OP_SUB_CLASS_VALID" } \
)

/*
@@ -197,7 +199,8 @@ TRACE_EVENT(cxl_overflow,
__field(u16, hdr_related_handle) \
__field(u64, hdr_timestamp) \
__field(u8, hdr_length) \
- __field(u8, hdr_maint_op_class)
+ __field(u8, hdr_maint_op_class) \
+ __field(u8, hdr_maint_op_sub_class)

#define CXL_EVT_TP_fast_assign(cxlmd, l, hdr) \
__assign_str(memdev); \
@@ -209,17 +212,19 @@ TRACE_EVENT(cxl_overflow,
__entry->hdr_handle = le16_to_cpu((hdr).handle); \
__entry->hdr_related_handle = le16_to_cpu((hdr).related_handle); \
__entry->hdr_timestamp = le64_to_cpu((hdr).timestamp); \
- __entry->hdr_maint_op_class = (hdr).maint_op_class
+ __entry->hdr_maint_op_class = (hdr).maint_op_class; \
+ __entry->hdr_maint_op_sub_class = (hdr).maint_op_sub_class

#define CXL_EVT_TP_printk(fmt, ...) \
TP_printk("memdev=%s host=%s serial=%lld log=%s : time=%llu uuid=%pUb " \
"len=%d flags='%s' handle=%x related_handle=%x " \
- "maint_op_class=%u : " fmt, \
+ "maint_op_class=%u maint_op_sub_class=%u : " fmt, \
__get_str(memdev), __get_str(host), __entry->serial, \
cxl_event_log_type_str(__entry->log), \
__entry->hdr_timestamp, &__entry->hdr_uuid, __entry->hdr_length,\
show_hdr_flags(__entry->hdr_flags), __entry->hdr_handle, \
__entry->hdr_related_handle, __entry->hdr_maint_op_class, \
+ __entry->hdr_maint_op_sub_class, \
##__VA_ARGS__)

TRACE_EVENT(cxl_generic_event,
diff --git a/include/cxl/event.h b/include/cxl/event.h
index 0bea1afbd747..e1d485ad376b 100644
--- a/include/cxl/event.h
+++ b/include/cxl/event.h
@@ -18,7 +18,8 @@ struct cxl_event_record_hdr {
__le16 related_handle;
__le64 timestamp;
u8 maint_op_class;
- u8 reserved[15];
+ u8 maint_op_sub_class;
+ u8 reserved[14];
} __packed;

struct cxl_event_media_hdr {
--
2.43.0