@@ -5,6 +5,80 @@
# = CXL devices
##
+##
+# @CxlEventLog:
+#
+# CXL has a number of separate event logs for different types of
+# events. Each such event log is handled and signaled independently.
+#
+# @informational: Information Event Log
+#
+# @warning: Warning Event Log
+#
+# @failure: Failure Event Log
+#
+# @fatal: Fatal Event Log
+#
+# Since: 8.1
+##
+{ 'enum': 'CxlEventLog',
+ 'data': ['informational',
+ 'warning',
+ 'failure',
+ 'fatal']
+ }
+
+##
+# @cxl-inject-general-media-event:
+#
+# Inject an event record for a General Media Event (CXL r3.0
+# 8.2.9.2.1.1). This event type is reported via one of the event logs
+# specified via the log parameter.
+#
+# @path: CXL type 3 device canonical QOM path
+#
+# @log: event log to add the event to
+#
+# @flags: Event Record Flags. See CXL r3.0 Table 8-42 Common Event
+# Record Format, Event Record Flags for subfield definitions.
+#
+# @dpa: Device Physical Address (relative to @path device). Note
+# lower bits include some flags. See CXL r3.0 Table 8-43 General
+# Media Event Record, Physical Address.
+#
+# @descriptor: Memory Event Descriptor with additional memory event
+# information. See CXL r3.0 Table 8-43 General Media Event
+# Record, Memory Event Descriptor for bit definitions.
+#
+# @type: Type of memory event that occurred. See CXL r3.0 Table 8-43
+# General Media Event Record, Memory Event Type for possible
+# values.
+#
+# @transaction-type: Type of first transaction that caused the event
+# to occur. See CXL r3.0 Table 8-43 General Media Event Record,
+# Transaction Type for possible values.
+#
+# @channel: The channel of the memory event location. A channel is an
+# interface that can be independently accessed for a transaction.
+#
+# @rank: The rank of the memory event location. A rank is a set of
+# memory devices on a channel that together execute a transaction.
+#
+# @device: Bitmask that represents all devices in the rank associated
+# with the memory event location.
+#
+# @component-id: Device specific component identifier for the event.
+# May describe a field replaceable sub-component of the device.
+#
+# Since: 8.1
+##
+{ 'command': 'cxl-inject-general-media-event',
+ 'data': { 'path': 'str', 'log': 'CxlEventLog', 'flags': 'uint8',
+ 'dpa': 'uint64', 'descriptor': 'uint8',
+ 'type': 'uint8', 'transaction-type': 'uint8',
+ '*channel': 'uint8', '*rank': 'uint8',
+ '*device': 'uint32', '*component-id': 'str' } }
+
##
# @cxl-inject-poison:
#
@@ -103,4 +103,24 @@ typedef struct CXLEventInterruptPolicy {
/* DCD is optional but other fields are not */
#define CXL_EVENT_INT_SETTING_MIN_LEN 4
+/*
+ * 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
+typedef struct CXLEventGenMedia {
+ CXLEventRecordHdr hdr;
+ uint64_t phys_addr;
+ uint8_t descriptor;
+ uint8_t type;
+ uint8_t transaction_type;
+ uint16_t validity_flags;
+ uint8_t channel;
+ uint8_t rank;
+ uint8_t device[3];
+ uint8_t component_id[CXL_EVENT_GEN_MED_COMP_ID_SIZE];
+ uint8_t reserved[CXL_EVENT_GEN_MED_RES_SIZE];
+} QEMU_PACKED CXLEventGenMedia;
+
#endif /* CXL_EVENTS_H */
@@ -1181,6 +1181,117 @@ void qmp_cxl_inject_correctable_error(const char *path, CxlCorErrorType type,
pcie_aer_inject_error(PCI_DEVICE(obj), &err);
}
+static void cxl_assign_event_header(CXLEventRecordHdr *hdr,
+ const QemuUUID *uuid, uint32_t flags,
+ uint8_t length, uint64_t timestamp)
+{
+ st24_le_p(&hdr->flags, flags);
+ hdr->length = length;
+ memcpy(&hdr->id, uuid, sizeof(hdr->id));
+ stq_le_p(&hdr->timestamp, timestamp);
+}
+
+static const QemuUUID gen_media_uuid = {
+ .data = UUID(0xfbcd0a77, 0xc260, 0x417f,
+ 0x85, 0xa9, 0x08, 0x8b, 0x16, 0x21, 0xeb, 0xa6),
+};
+
+#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)
+
+static int ct3d_qmp_cxl_event_log_enc(CxlEventLog log)
+{
+ switch (log) {
+ case CXL_EVENT_LOG_INFORMATIONAL:
+ return CXL_EVENT_TYPE_INFO;
+ case CXL_EVENT_LOG_WARNING:
+ return CXL_EVENT_TYPE_WARN;
+ case CXL_EVENT_LOG_FAILURE:
+ return CXL_EVENT_TYPE_FAIL;
+ case CXL_EVENT_LOG_FATAL:
+ return CXL_EVENT_TYPE_FATAL;
+/* DCD not yet supported */
+ default:
+ return -EINVAL;
+ }
+}
+/* Component ID is device specific. Define this as a string. */
+void qmp_cxl_inject_general_media_event(const char *path, CxlEventLog log,
+ uint8_t flags, uint64_t dpa,
+ uint8_t descriptor, uint8_t type,
+ uint8_t transaction_type,
+ bool has_channel, uint8_t channel,
+ bool has_rank, uint8_t rank,
+ bool has_device, uint32_t device,
+ const char *component_id,
+ Error **errp)
+{
+ Object *obj = object_resolve_path(path, NULL);
+ CXLEventGenMedia gem;
+ CXLEventRecordHdr *hdr = &gem.hdr;
+ CXLDeviceState *cxlds;
+ CXLType3Dev *ct3d;
+ uint16_t valid_flags = 0;
+ uint8_t enc_log;
+ int rc;
+
+ if (!obj) {
+ error_setg(errp, "Unable to resolve path");
+ return;
+ }
+ if (!object_dynamic_cast(obj, TYPE_CXL_TYPE3)) {
+ error_setg(errp, "Path does not point to a CXL type 3 device");
+ return;
+ }
+ ct3d = CXL_TYPE3(obj);
+ cxlds = &ct3d->cxl_dstate;
+
+ rc = ct3d_qmp_cxl_event_log_enc(log);
+ if (rc < 0) {
+ error_setg(errp, "Unhandled error log type");
+ return;
+ }
+ enc_log = rc;
+
+ memset(&gem, 0, sizeof(gem));
+ cxl_assign_event_header(hdr, &gen_media_uuid, flags, sizeof(gem),
+ cxl_device_get_timestamp(&ct3d->cxl_dstate));
+
+ stq_le_p(&gem.phys_addr, dpa);
+ gem.descriptor = descriptor;
+ gem.type = type;
+ gem.transaction_type = transaction_type;
+
+ if (has_channel) {
+ gem.channel = channel;
+ valid_flags |= CXL_GMER_VALID_CHANNEL;
+ }
+
+ if (has_rank) {
+ gem.rank = rank;
+ valid_flags |= CXL_GMER_VALID_RANK;
+ }
+
+ if (has_device) {
+ st24_le_p(gem.device, device);
+ valid_flags |= CXL_GMER_VALID_DEVICE;
+ }
+
+ if (component_id) {
+ strncpy((char *)gem.component_id, component_id,
+ sizeof(gem.component_id) - 1);
+ valid_flags |= CXL_GMER_VALID_COMPONENT;
+ }
+
+ stw_le_p(&gem.validity_flags, valid_flags);
+
+ if (cxl_event_insert(cxlds, enc_log, (CXLEventRecordRaw *)&gem)) {
+ cxl_event_irq_assert(ct3d);
+ }
+}
+
static void ct3_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
@@ -3,6 +3,16 @@
#include "qapi/error.h"
#include "qapi/qapi-commands-cxl.h"
+void qmp_cxl_inject_general_media_event(const char *path, CxlEventLog log,
+ uint8_t flags, uint64_t dpa,
+ uint8_t descriptor, uint8_t type,
+ uint8_t transaction_type,
+ bool has_channel, uint8_t channel,
+ bool has_rank, uint8_t rank,
+ bool has_device, uint32_t device,
+ const char *component_id,
+ Error **errp) {}
+
void qmp_cxl_inject_poison(const char *path, uint64_t start, uint64_t length,
Error **errp)
{