include/cxl/event.h

Source file repositories/reference/linux-study-clean/include/cxl/event.h

File Facts

System
Linux kernel
Corpus path
include/cxl/event.h
Extension
.h
Size
7929 bytes
Lines
346
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

struct cxl_event_record_hdr {
	u8 length;
	u8 flags[3];
	__le16 handle;
	__le16 related_handle;
	__le64 timestamp;
	u8 maint_op_class;
	u8 maint_op_sub_class;
	__le16 ld_id;
	u8 head_id;
	u8 reserved[11];
} __packed;

struct cxl_event_media_hdr {
	struct cxl_event_record_hdr hdr;
	__le64 phys_addr;
	u8 descriptor;
	u8 type;
	u8 transaction_type;
	/*
	 * The meaning of Validity Flags from bit 2 is
	 * different across DRAM and General Media records
	 */
	u8 validity_flags[2];
	u8 channel;
	u8 rank;
} __packed;

#define CXL_EVENT_RECORD_DATA_LENGTH 0x50
struct cxl_event_generic {
	struct cxl_event_record_hdr hdr;
	u8 data[CXL_EVENT_RECORD_DATA_LENGTH];
} __packed;

/*
 * General Media Event Record
 * CXL rev 3.1 Section 8.2.9.2.1.1; Table 8-45
 */
#define CXL_EVENT_GEN_MED_COMP_ID_SIZE	0x10
struct cxl_event_gen_media {
	struct cxl_event_media_hdr media_hdr;
	u8 device[3];
	u8 component_id[CXL_EVENT_GEN_MED_COMP_ID_SIZE];
	u8 cme_threshold_ev_flags;
	u8 cme_count[3];
	u8 sub_type;
	u8 reserved[41];
} __packed;

/*
 * DRAM Event Record - DER
 * CXL rev 3.1 section 8.2.9.2.1.2; Table 8-46
 */
#define CXL_EVENT_DER_CORRECTION_MASK_SIZE	0x20
struct cxl_event_dram {
	struct cxl_event_media_hdr media_hdr;
	u8 nibble_mask[3];
	u8 bank_group;
	u8 bank;
	u8 row[3];
	u8 column[2];
	u8 correction_mask[CXL_EVENT_DER_CORRECTION_MASK_SIZE];
	u8 component_id[CXL_EVENT_GEN_MED_COMP_ID_SIZE];
	u8 sub_channel;
	u8 cme_threshold_ev_flags;
	u8 cvme_count[3];
	u8 sub_type;
	u8 reserved;
} __packed;

/*
 * Get Health Info Record
 * CXL rev 3.1 section 8.2.9.9.3.1; Table 8-133
 */
struct cxl_get_health_info {
	u8 health_status;
	u8 media_status;
	u8 add_status;
	u8 life_used;
	u8 device_temp[2];
	u8 dirty_shutdown_cnt[4];
	u8 cor_vol_err_cnt[4];
	u8 cor_per_err_cnt[4];
} __packed;

/*
 * Memory Module Event Record
 * CXL rev 3.1 section 8.2.9.2.1.3; Table 8-47
 */
struct cxl_event_mem_module {

Annotation

Implementation Notes