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Date: Mon, 10 Oct 2022 15:41:25 -0700 From: ira.weiny@...el.com To: Dan Williams <dan.j.williams@...el.com> Cc: Ira Weiny <ira.weiny@...el.com>, Alison Schofield <alison.schofield@...el.com>, Vishal Verma <vishal.l.verma@...el.com>, Ben Widawsky <bwidawsk@...nel.org>, Steven Rostedt <rostedt@...dmis.org>, Jonathan Cameron <Jonathan.Cameron@...wei.com>, Davidlohr Bueso <dave@...olabs.net>, linux-kernel@...r.kernel.org, linux-cxl@...r.kernel.org Subject: [RFC V2 PATCH 05/11] cxl/mem: Trace General Media Event Record From: Ira Weiny <ira.weiny@...el.com> 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. Signed-off-by: Ira Weiny <ira.weiny@...el.com> --- Changes from RFC: Add reserved byte array Use common CXL event header record macros Jonathan Use unaligned_le{24,16} for unaligned fields Don't use the inverse of phy addr mask Dave Jiang s/cxl_gen_media_event/general_media s/cxl_evt_gen_media/cxl_event_gen_media --- drivers/cxl/core/mbox.c | 30 ++++++++++- drivers/cxl/cxlmem.h | 20 +++++++ include/trace/events/cxl.h | 108 +++++++++++++++++++++++++++++++++++++ 3 files changed, 156 insertions(+), 2 deletions(-) diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c index bc4e42b3e01b..1097250c115a 100644 --- a/drivers/cxl/core/mbox.c +++ b/drivers/cxl/core/mbox.c @@ -712,6 +712,32 @@ int cxl_enumerate_cmds(struct cxl_dev_state *cxlds) } 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_trace_event_record(const char *dev_name, + enum cxl_event_log_type type, + struct cxl_get_event_payload *payload) +{ + uuid_t *id = &payload->record.hdr.id; + + if (uuid_equal(id, &gen_media_event_uuid)) { + struct cxl_event_gen_media *rec = + (struct cxl_event_gen_media *)&payload->record; + + trace_general_media(dev_name, type, rec); + return; + } + + /* For unknown record types print just the header */ + trace_generic_event(dev_name, type, &payload->record); +} + static int cxl_clear_event_record(struct cxl_dev_state *cxlds, enum cxl_event_log_type log, __le16 handle) @@ -745,8 +771,8 @@ static void cxl_mem_get_records_log(struct cxl_dev_state *cxlds, } if (le16_to_cpu(payload.record_count) == 1) { - trace_generic_event(dev_name(cxlds->dev), type, - &payload.record); + cxl_trace_event_record(dev_name(cxlds->dev), type, + &payload); rc = cxl_clear_event_record(cxlds, type, payload.record.hdr.handle); if (rc) { diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index 75aea34f3ffb..b5c120bd4068 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -411,6 +411,26 @@ struct cxl_mbox_clear_event_payload { __le16 handle; }; +/* + * 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 +#define CXL_EVENT_GEN_MED_RES_SIZE 0x2e +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[CXL_EVENT_GEN_MED_RES_SIZE]; +} __packed; + struct cxl_mbox_get_partition_info { __le64 active_volatile_cap; __le64 active_persistent_cap; diff --git a/include/trace/events/cxl.h b/include/trace/events/cxl.h index 318ba5fe046e..82a8d3b750a2 100644 --- a/include/trace/events/cxl.h +++ b/include/trace/events/cxl.h @@ -122,6 +122,114 @@ TRACE_EVENT(generic_event, __print_hex(__entry->data, CXL_EVENT_RECORD_DATA_LENGTH)) ); +/* + * General Media Event Record - GMER + * CXL v2.0 Section 8.2.9.1.1.1; Table 154 + */ +#define CXL_GMER_PHYS_ADDR_VOLATILE BIT(0) +#define CXL_GMER_PHYS_ADDR_MASK 0xFFFFFFFFFFFFFF80 + +#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(general_media, + + TP_PROTO(const char *dev_name, enum cxl_event_log_type log, + struct cxl_event_gen_media *rec), + + TP_ARGS(dev_name, log, rec), + + TP_STRUCT__entry( + CXL_EVT_TP_entry + /* General Media */ + __field(u64, phys_addr) + __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) + __array(u8, reserved, CXL_EVENT_GEN_MED_RES_SIZE) + __field(u16, validity_flags) + __field(u8, rank) /* Out of order to pack trace record */ + ), + + TP_fast_assign( + CXL_EVT_TP_fast_assign(dev_name, log, rec->hdr); + + /* General Media */ + __entry->phys_addr = le64_to_cpu(rec->phys_addr); + __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); + memcpy(__entry->reserved, &rec->reserved, + CXL_EVENT_GEN_MED_RES_SIZE); + __entry->validity_flags = get_unaligned_le16(&rec->validity_flags); + ), + + CXL_EVT_TP_printk("phys_addr=%llx volatile=%s desc='%s' type='%s' " \ + "trans_type='%s' channel=%u rank=%u device=%x comp_id=%s " \ + "valid_flags='%s' reserved=%s", + __entry->phys_addr & CXL_GMER_PHYS_ADDR_MASK, + (__entry->phys_addr & CXL_GMER_PHYS_ADDR_VOLATILE) ? "TRUE" : "FALSE", + 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), + __print_hex(__entry->reserved, CXL_EVENT_GEN_MED_RES_SIZE) + ) +); + #endif /* _CXL_TRACE_EVENTS_H */ /* This part must be outside protection */ -- 2.37.2
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