From d54a531a430b775ae505563934a03720329fa5bd Mon Sep 17 00:00:00 2001 From: Ira Weiny Date: Tue, 17 Jan 2023 21:53:38 -0800 Subject: [PATCH] cxl/mem: Trace General Media Event Record CXL rev 3.0 section 8.2.9.2.1.1 defines the General Media Event Record. Determine if the event read is a general media record and if so trace the record as a General Media Event Record. Reviewed-by: Dan Williams Reviewed-by: Davidlohr Bueso Reviewed-by: Jonathan Cameron Signed-off-by: Ira Weiny Link: https://lore.kernel.org/r/20221216-cxl-ev-log-v7-3-2316a5c8f7d8@intel.com Signed-off-by: Dan Williams --- drivers/cxl/core/mbox.c | 29 ++++++++++- drivers/cxl/core/trace.h | 124 +++++++++++++++++++++++++++++++++++++++++++++++ drivers/cxl/cxlmem.h | 19 ++++++++ 3 files changed, 170 insertions(+), 2 deletions(-) diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c index c329c1e..d5fe2f2 100644 --- a/drivers/cxl/core/mbox.c +++ b/drivers/cxl/core/mbox.c @@ -718,6 +718,31 @@ out: } EXPORT_SYMBOL_NS_GPL(cxl_enumerate_cmds, CXL); +/* + * General Media Event Record + * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43 + */ +static const uuid_t gen_media_event_uuid = + UUID_INIT(0xfbcd0a77, 0xc260, 0x417f, + 0x85, 0xa9, 0x08, 0x8b, 0x16, 0x21, 0xeb, 0xa6); + +static void cxl_event_trace_record(const struct device *dev, + enum cxl_event_log_type type, + struct cxl_event_record_raw *record) +{ + uuid_t *id = &record->hdr.id; + + if (uuid_equal(id, &gen_media_event_uuid)) { + struct cxl_event_gen_media *rec = + (struct cxl_event_gen_media *)record; + + trace_cxl_general_media(dev, type, rec); + } else { + /* For unknown record types print just the header */ + trace_cxl_generic_event(dev, type, record); + } +} + static int cxl_clear_event_record(struct cxl_dev_state *cxlds, enum cxl_event_log_type log, struct cxl_get_event_payload *get_pl) @@ -821,8 +846,8 @@ static void cxl_mem_get_records_log(struct cxl_dev_state *cxlds, break; for (i = 0; i < nr_rec; i++) - trace_cxl_generic_event(cxlds->dev, type, - &payload->records[i]); + cxl_event_trace_record(cxlds->dev, type, + &payload->records[i]); if (payload->flags & CXL_GET_EVENT_FLAG_OVERFLOW) trace_cxl_overflow(cxlds->dev, type, payload); diff --git a/drivers/cxl/core/trace.h b/drivers/cxl/core/trace.h index 1805936..ece4161 100644 --- a/drivers/cxl/core/trace.h +++ b/drivers/cxl/core/trace.h @@ -222,6 +222,130 @@ TRACE_EVENT(cxl_generic_event, __print_hex(__entry->data, CXL_EVENT_RECORD_DATA_LENGTH)) ); +/* + * Physical Address field masks + * + * General Media Event Record + * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43 + * + * DRAM Event Record + * CXL rev 3.0 section 8.2.9.2.1.2; Table 8-44 + */ +#define CXL_DPA_FLAGS_MASK 0x3F +#define CXL_DPA_MASK (~CXL_DPA_FLAGS_MASK) + +#define CXL_DPA_VOLATILE BIT(0) +#define CXL_DPA_NOT_REPAIRABLE BIT(1) +#define show_dpa_flags(flags) __print_flags(flags, "|", \ + { CXL_DPA_VOLATILE, "VOLATILE" }, \ + { CXL_DPA_NOT_REPAIRABLE, "NOT_REPAIRABLE" } \ +) + +/* + * General Media Event Record - GMER + * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43 + */ +#define CXL_GMER_EVT_DESC_UNCORECTABLE_EVENT BIT(0) +#define CXL_GMER_EVT_DESC_THRESHOLD_EVENT BIT(1) +#define CXL_GMER_EVT_DESC_POISON_LIST_OVERFLOW BIT(2) +#define show_event_desc_flags(flags) __print_flags(flags, "|", \ + { CXL_GMER_EVT_DESC_UNCORECTABLE_EVENT, "UNCORRECTABLE_EVENT" }, \ + { CXL_GMER_EVT_DESC_THRESHOLD_EVENT, "THRESHOLD_EVENT" }, \ + { CXL_GMER_EVT_DESC_POISON_LIST_OVERFLOW, "POISON_LIST_OVERFLOW" } \ +) + +#define CXL_GMER_MEM_EVT_TYPE_ECC_ERROR 0x00 +#define CXL_GMER_MEM_EVT_TYPE_INV_ADDR 0x01 +#define CXL_GMER_MEM_EVT_TYPE_DATA_PATH_ERROR 0x02 +#define show_mem_event_type(type) __print_symbolic(type, \ + { CXL_GMER_MEM_EVT_TYPE_ECC_ERROR, "ECC Error" }, \ + { CXL_GMER_MEM_EVT_TYPE_INV_ADDR, "Invalid Address" }, \ + { CXL_GMER_MEM_EVT_TYPE_DATA_PATH_ERROR, "Data Path Error" } \ +) + +#define CXL_GMER_TRANS_UNKNOWN 0x00 +#define CXL_GMER_TRANS_HOST_READ 0x01 +#define CXL_GMER_TRANS_HOST_WRITE 0x02 +#define CXL_GMER_TRANS_HOST_SCAN_MEDIA 0x03 +#define CXL_GMER_TRANS_HOST_INJECT_POISON 0x04 +#define CXL_GMER_TRANS_INTERNAL_MEDIA_SCRUB 0x05 +#define CXL_GMER_TRANS_INTERNAL_MEDIA_MANAGEMENT 0x06 +#define show_trans_type(type) __print_symbolic(type, \ + { CXL_GMER_TRANS_UNKNOWN, "Unknown" }, \ + { CXL_GMER_TRANS_HOST_READ, "Host Read" }, \ + { CXL_GMER_TRANS_HOST_WRITE, "Host Write" }, \ + { CXL_GMER_TRANS_HOST_SCAN_MEDIA, "Host Scan Media" }, \ + { CXL_GMER_TRANS_HOST_INJECT_POISON, "Host Inject Poison" }, \ + { CXL_GMER_TRANS_INTERNAL_MEDIA_SCRUB, "Internal Media Scrub" }, \ + { CXL_GMER_TRANS_INTERNAL_MEDIA_MANAGEMENT, "Internal Media Management" } \ +) + +#define CXL_GMER_VALID_CHANNEL BIT(0) +#define CXL_GMER_VALID_RANK BIT(1) +#define CXL_GMER_VALID_DEVICE BIT(2) +#define CXL_GMER_VALID_COMPONENT BIT(3) +#define show_valid_flags(flags) __print_flags(flags, "|", \ + { CXL_GMER_VALID_CHANNEL, "CHANNEL" }, \ + { CXL_GMER_VALID_RANK, "RANK" }, \ + { CXL_GMER_VALID_DEVICE, "DEVICE" }, \ + { CXL_GMER_VALID_COMPONENT, "COMPONENT" } \ +) + +TRACE_EVENT(cxl_general_media, + + TP_PROTO(const struct device *dev, enum cxl_event_log_type log, + struct cxl_event_gen_media *rec), + + TP_ARGS(dev, log, rec), + + TP_STRUCT__entry( + CXL_EVT_TP_entry + /* General Media */ + __field(u64, dpa) + __field(u8, descriptor) + __field(u8, type) + __field(u8, transaction_type) + __field(u8, channel) + __field(u32, device) + __array(u8, comp_id, CXL_EVENT_GEN_MED_COMP_ID_SIZE) + __field(u16, validity_flags) + /* Following are out of order to pack trace record */ + __field(u8, rank) + __field(u8, dpa_flags) + ), + + TP_fast_assign( + CXL_EVT_TP_fast_assign(dev, log, rec->hdr); + + /* General Media */ + __entry->dpa = le64_to_cpu(rec->phys_addr); + __entry->dpa_flags = __entry->dpa & CXL_DPA_FLAGS_MASK; + /* Mask after flags have been parsed */ + __entry->dpa &= CXL_DPA_MASK; + __entry->descriptor = rec->descriptor; + __entry->type = rec->type; + __entry->transaction_type = rec->transaction_type; + __entry->channel = rec->channel; + __entry->rank = rec->rank; + __entry->device = get_unaligned_le24(rec->device); + memcpy(__entry->comp_id, &rec->component_id, + CXL_EVENT_GEN_MED_COMP_ID_SIZE); + __entry->validity_flags = get_unaligned_le16(&rec->validity_flags); + ), + + CXL_EVT_TP_printk("dpa=%llx dpa_flags='%s' " \ + "descriptor='%s' type='%s' transaction_type='%s' channel=%u rank=%u " \ + "device=%x comp_id=%s validity_flags='%s'", + __entry->dpa, show_dpa_flags(__entry->dpa_flags), + show_event_desc_flags(__entry->descriptor), + show_mem_event_type(__entry->type), + show_trans_type(__entry->transaction_type), + __entry->channel, __entry->rank, __entry->device, + __print_hex(__entry->comp_id, CXL_EVENT_GEN_MED_COMP_ID_SIZE), + show_valid_flags(__entry->validity_flags) + ) +); + #endif /* _CXL_EVENTS_H */ #define TRACE_INCLUDE_FILE trace diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index c7db2fa..1713b43 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -444,6 +444,25 @@ struct cxl_mbox_clear_event_payload { } __packed; #define CXL_CLEAR_EVENT_MAX_HANDLES U8_MAX +/* + * General Media Event Record + * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43 + */ +#define CXL_EVENT_GEN_MED_COMP_ID_SIZE 0x10 +struct cxl_event_gen_media { + struct cxl_event_record_hdr hdr; + __le64 phys_addr; + u8 descriptor; + u8 type; + u8 transaction_type; + u8 validity_flags[2]; + u8 channel; + u8 rank; + u8 device[3]; + u8 component_id[CXL_EVENT_GEN_MED_COMP_ID_SIZE]; + u8 reserved[46]; +} __packed; + struct cxl_mbox_get_partition_info { __le64 active_volatile_cap; __le64 active_persistent_cap; -- 2.7.4