From: Jonathan Cameron <jonathan.came...@huawei.com>
Defined in CXL r3.0 8.2.9.2.1.2 DRAM Event Record, this event
provides information related to DRAM devices.
Example injection command in QMP:
{ "execute": "cxl-inject-dram-event",
"arguments": {
"path": "/machine/peripheral/cxl-mem0",
"log": "informational",
"flags": 1,
"dpa": 1000,
"descriptor": 3,
"type": 3,
"transaction-type": 192,
"channel": 3,
"rank": 17,
"nibble-mask": 37421234,
"bank-group": 7,
"bank": 11,
"row": 2,
"column": 77,
"correction-mask": [33, 44, 55,66]
}}
Acked-by: Markus Armbruster <arm...@redhat.com>
Reviewed-by: Fan Ni <fan...@samsung.com>
Reviewed-by: Ira Weiny <ira.we...@intel.com>
Signed-off-by: Jonathan Cameron <jonathan.came...@huawei.com>
Message-Id: <20230530133603.16934-7-jonathan.came...@huawei.com>
Reviewed-by: Michael S. Tsirkin <m...@redhat.com>
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
---
qapi/cxl.json | 61 +++++++++++++++++++
include/hw/cxl/cxl_events.h | 23 +++++++
hw/mem/cxl_type3.c | 116 ++++++++++++++++++++++++++++++++++++
hw/mem/cxl_type3_stubs.c | 13 ++++
4 files changed, 213 insertions(+)
diff --git a/qapi/cxl.json b/qapi/cxl.json
index d509430844..2ad310387c 100644
--- a/qapi/cxl.json
+++ b/qapi/cxl.json
@@ -79,6 +79,67 @@
'*channel': 'uint8', '*rank': 'uint8',
'*device': 'uint32', '*component-id': 'str' } }
+##
+# @cxl-inject-dram-event:
+#
+# Inject an event record for a DRAM Event (CXL r3.0 8.2.9.2.1.2).
+# 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 8-44 DRAM
+# Event Record, Physical Address.
+#
+# @descriptor: Memory Event Descriptor with additional memory event
+# information. See CXL r3.0 Table 8-44 DRAM Event Record, Memory
+# Event Descriptor for bit definitions.
+#
+# @type: Type of memory event that occurred. See CXL r3.0 Table 8-44
+# DRAM 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 8-44 DRAM 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.
+#
+# @nibble-mask: Identifies one or more nibbles that the error affects
+#
+# @bank-group: Bank group of the memory event location, incorporating
+# a number of Banks.
+#
+# @bank: Bank of the memory event location. A single bank is accessed
+# per read or write of the memory.
+#
+# @row: Row address within the DRAM.
+#
+# @column: Column address within the DRAM.
+#
+# @correction-mask: Bits within each nibble. Used in order of bits
+# set in the nibble-mask. Up to 4 nibbles may be covered.
+#
+# Since: 8.1
+##
+{ 'command': 'cxl-inject-dram-event',
+ 'data': { 'path': 'str', 'log': 'CxlEventLog', 'flags': 'uint8',
+ 'dpa': 'uint64', 'descriptor': 'uint8',
+ 'type': 'uint8', 'transaction-type': 'uint8',
+ '*channel': 'uint8', '*rank': 'uint8', '*nibble-mask': 'uint32',
+ '*bank-group': 'uint8', '*bank': 'uint8', '*row': 'uint32',
+ '*column': 'uint16', '*correction-mask': [ 'uint64' ]
+ }}
+
##
# @cxl-inject-poison:
#
diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h
index b189193f4c..a39e30d973 100644
--- a/include/hw/cxl/cxl_events.h
+++ b/include/hw/cxl/cxl_events.h
@@ -123,4 +123,27 @@ typedef struct CXLEventGenMedia {
uint8_t reserved[CXL_EVENT_GEN_MED_RES_SIZE];
} QEMU_PACKED CXLEventGenMedia;
+/*
+ * DRAM Event Record
+ * CXL Rev 3.0 Section 8.2.9.2.1.2: Table 8-44
+ * All fields little endian.
+ */
+typedef struct CXLEventDram {
+ 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 nibble_mask[3];
+ uint8_t bank_group;
+ uint8_t bank;
+ uint8_t row[3];
+ uint16_t column;
+ uint64_t correction_mask[4];
+ uint8_t reserved[0x17];
+} QEMU_PACKED CXLEventDram;
+
#endif /* CXL_EVENTS_H */
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index b1618779d2..3c07b1b7a3 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -1196,6 +1196,11 @@ static const QemuUUID gen_media_uuid = {
0x85, 0xa9, 0x08, 0x8b, 0x16, 0x21, 0xeb, 0xa6),
};
+static const QemuUUID dram_uuid = {
+ .data = UUID(0x601dcbb3, 0x9c06, 0x4eab, 0xb8, 0xaf,
+ 0x4e, 0x9b, 0xfb, 0x5c, 0x96, 0x24),
+};
+
#define CXL_GMER_VALID_CHANNEL BIT(0)
#define CXL_GMER_VALID_RANK BIT(1)
#define CXL_GMER_VALID_DEVICE BIT(2)
@@ -1292,6 +1297,117 @@ void qmp_cxl_inject_general_media_event(const char
*path, CxlEventLog log,
}
}
+#define CXL_DRAM_VALID_CHANNEL BIT(0)
+#define CXL_DRAM_VALID_RANK BIT(1)
+#define CXL_DRAM_VALID_NIBBLE_MASK BIT(2)
+#define CXL_DRAM_VALID_BANK_GROUP BIT(3)
+#define CXL_DRAM_VALID_BANK BIT(4)
+#define CXL_DRAM_VALID_ROW BIT(5)
+#define CXL_DRAM_VALID_COLUMN BIT(6)
+#define CXL_DRAM_VALID_CORRECTION_MASK BIT(7)
+
+void qmp_cxl_inject_dram_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_nibble_mask, uint32_t nibble_mask,
+ bool has_bank_group, uint8_t bank_group,
+ bool has_bank, uint8_t bank,
+ bool has_row, uint32_t row,
+ bool has_column, uint16_t column,
+ bool has_correction_mask, uint64List
*correction_mask,
+ Error **errp)
+{
+ Object *obj = object_resolve_path(path, NULL);
+ CXLEventDram dram;
+ CXLEventRecordHdr *hdr = &dram.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(&dram, 0, sizeof(dram));
+ cxl_assign_event_header(hdr, &dram_uuid, flags, sizeof(dram),
+ cxl_device_get_timestamp(&ct3d->cxl_dstate));
+ stq_le_p(&dram.phys_addr, dpa);
+ dram.descriptor = descriptor;
+ dram.type = type;
+ dram.transaction_type = transaction_type;
+
+ if (has_channel) {
+ dram.channel = channel;
+ valid_flags |= CXL_DRAM_VALID_CHANNEL;
+ }
+
+ if (has_rank) {
+ dram.rank = rank;
+ valid_flags |= CXL_DRAM_VALID_RANK;
+ }
+
+ if (has_nibble_mask) {
+ st24_le_p(dram.nibble_mask, nibble_mask);
+ valid_flags |= CXL_DRAM_VALID_NIBBLE_MASK;
+ }
+
+ if (has_bank_group) {
+ dram.bank_group = bank_group;
+ valid_flags |= CXL_DRAM_VALID_BANK_GROUP;
+ }
+
+ if (has_bank) {
+ dram.bank = bank;
+ valid_flags |= CXL_DRAM_VALID_BANK;
+ }
+
+ if (has_row) {
+ st24_le_p(dram.row, row);
+ valid_flags |= CXL_DRAM_VALID_ROW;
+ }
+
+ if (has_column) {
+ stw_le_p(&dram.column, column);
+ valid_flags |= CXL_DRAM_VALID_COLUMN;
+ }
+
+ if (has_correction_mask) {
+ int count = 0;
+ while (correction_mask && count < 4) {
+ stq_le_p(&dram.correction_mask[count],
+ correction_mask->value);
+ count++;
+ correction_mask = correction_mask->next;
+ }
+ valid_flags |= CXL_DRAM_VALID_CORRECTION_MASK;
+ }
+
+ stw_le_p(&dram.validity_flags, valid_flags);
+
+ if (cxl_event_insert(cxlds, enc_log, (CXLEventRecordRaw *)&dram)) {
+ cxl_event_irq_assert(ct3d);
+ }
+ return;
+}
+
static void ct3_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
diff --git a/hw/mem/cxl_type3_stubs.c b/hw/mem/cxl_type3_stubs.c
index 4dfbdf9268..e904c5d089 100644
--- a/hw/mem/cxl_type3_stubs.c
+++ b/hw/mem/cxl_type3_stubs.c
@@ -13,6 +13,19 @@ void qmp_cxl_inject_general_media_event(const char *path,
CxlEventLog log,
const char *component_id,
Error **errp) {}
+void qmp_cxl_inject_dram_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_nibble_mask, uint32_t nibble_mask,
+ bool has_bank_group, uint8_t bank_group,
+ bool has_bank, uint8_t bank,
+ bool has_row, uint32_t row,
+ bool has_column, uint16_t column,
+ bool has_correction_mask, uint64List
*correction_mask,
+ Error **errp) {}
+
void qmp_cxl_inject_poison(const char *path, uint64_t start, uint64_t length,
Error **errp)
{
--
MST
