cxl/events: Add Component Identifier formatting for CXL spec rev 3.1

Add Component Identifier formatting for CXL spec rev 3.1, Section
8.2.9.2.1, Table 8-44.

Examples for Component Identifier format in trace log,

validity_flags='CHANNEL|RANK|DEVICE|COMPONENT|COMPONENT PLDM FORMAT' \
comp_id=03 74 c5 08 9a 1a 0b fc d2 7e 2f 31 9b 3c 81 4d \
comp_id_pldm_valid_flags='PLDM Entity ID | Resource ID' \
pldm_entity_id=74 c5 08 9a 1a 0b pldm_resource_id=fc d2 7e 2f \

validity_flags='COMPONENT|COMPONENT PLDM FORMAT' \
comp_id=02 74 c5 08 9a 1a 0b fc d2 7e 2f 31 9b 3c 81 4d \
comp_id_pldm_valid_flags='Resource ID' \
pldm_entity_id=0x00 pldm_resource_id=fc d2 7e 2f

If the validity flags for component ID/component ID format or PLDM ID or
resource ID are not set, then pldm_entity_id=0x00 or pldm_resource_id=0x00
would be printed.

Component identifier formatting is used in the subsequent patches.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Link: https://patch.msgid.link/20250111091756.1682-3-shiju.jose@huawei.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>

drivers/cxl/core/trace.h

@@ -268,6 +268,28 @@ TRACE_EVENT(cxl_generic_event,
 	{ CXL_DPA_NOT_REPAIRABLE,		"NOT_REPAIRABLE"	}  \
 )
 
+/*
+ * Component ID Format
+ * CXL 3.1 section 8.2.9.2.1; Table 8-44
+ */
+#define CXL_PLDM_COMPONENT_ID_ENTITY_VALID	BIT(0)
+#define CXL_PLDM_COMPONENT_ID_RES_VALID		BIT(1)
+
+#define show_comp_id_pldm_flags(flags)  __print_flags(flags, " | ",	\
+	{ CXL_PLDM_COMPONENT_ID_ENTITY_VALID,   "PLDM Entity ID" },	\
+	{ CXL_PLDM_COMPONENT_ID_RES_VALID,      "Resource ID" }		\
+)
+
+#define show_pldm_entity_id(flags, valid_comp_id, valid_id_format, comp_id)	\
+	(flags & valid_comp_id && flags & valid_id_format) ?			\
+	(comp_id[0] & CXL_PLDM_COMPONENT_ID_ENTITY_VALID) ?			\
+	__print_hex(&comp_id[1], 6) : "0x00" : "0x00"
+
+#define show_pldm_resource_id(flags, valid_comp_id, valid_id_format, comp_id)	\
+	(flags & valid_comp_id && flags & valid_id_format) ?			\
+	(comp_id[0] & CXL_PLDM_COMPONENT_ID_RES_VALID) ?			\
+	__print_hex(&comp_id[7], 4) : "0x00" : "0x00"
+
 /*
  * General Media Event Record - GMER
  * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43