* [PATCH v9 0/7] QEMU CXL Provide mock CXL events and irq support
@ 2023-05-30 13:35 ` Jonathan Cameron via
0 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron @ 2023-05-30 13:35 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
v9: A few remaining QMP documentation formatting fixes from Markus.
Fingers crossed it's now clean!
Based on:
[PATCH v8 0/4] hw/cxl: Poison get, inject, clear
Based on: Message-ID: 20230526170010.574-1-Jonathan.Cameron@huawei.com
Updated cover letter from earlier versions:
One challenge here is striking the right balance between lots of constraints
in the injection code to enforce particular reserved bits etc by breaking
out all the flags as individual parameters vs having a reasonably concise
API. I think this set strikes the right balance but others may well
disagree :) Note that Ira raised the question of whether we should be
automatically establishing the volatile flag based on the Device Physical
Address of the injected error. My proposal is to not do so for now, but
to possibly revisit tightening the checking of injected errors in future.
Whilst the volatile flag is straight forwards, some of the other flags that
could be automatically set (or perhaps checked for validiaty) are much more
complex. Adding verification at this stage would greatly increase the
complexity of the patch + we are missing other elements that would interact
with this. I'm not concerned about potential breaking of backwards compatibility
if it only related to the injection of errors that make no sense for a real
device.
CXL Event records inform the OS of various CXL device events. Thus far CXL
memory devices are emulated and therefore don't naturally generate events.
Add an event infrastructure and mock event injection. Previous versions
included a bulk insertion of lots of events. However, this series focuses on
providing the ability to inject individual events through QMP. Only the
General Media Event is included in this series as an example. Other events can
be added pretty easily once the infrastructure is acceptable.
In addition, this version updates the code to be in line with the
specification based on discussions around the kernel patches.
Injection examples;
{ "execute": "cxl-inject-general-media-event",
"arguments": {
"path": "/machine/peripheral/cxl-mem0",
"log": "informational",
"flags": 1,
"dpa": 1000,
"descriptor": 3,
"type": 3,
"transaction-type": 192,
"channel": 3,
"device": 5,
"component-id": "iras mem"
}}
{ "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]
}}
{ "execute": "cxl-inject-memory-module-event",
"arguments": {
"path": "/machine/peripheral/cxl-mem0",
"log": "informational",
"flags": 1,
"type": 3,
"health-status": 3,
"media-status": 7,
"additional-status": 33,
"life-used": 30,
"temperature": -15,
"dirty-shutdown-count": 4,
"corrected-volatile-error-count": 3233,
"corrected-persistent-error-count": 1300
}}
Ira Weiny (4):
hw/cxl/events: Add event status register
hw/cxl/events: Wire up get/clear event mailbox commands
hw/cxl/events: Add event interrupt support
hw/cxl/events: Add injection of General Media Events
Jonathan Cameron (3):
hw/cxl: Move CXLRetCode definition to cxl_device.h
hw/cxl/events: Add injection of DRAM events
hw/cxl/events: Add injection of Memory Module Events
qapi/cxl.json | 188 +++++++++++++++++++++++
include/hw/cxl/cxl_device.h | 80 +++++++++-
include/hw/cxl/cxl_events.h | 168 +++++++++++++++++++++
hw/cxl/cxl-device-utils.c | 43 +++++-
hw/cxl/cxl-events.c | 248 ++++++++++++++++++++++++++++++
hw/cxl/cxl-mailbox-utils.c | 166 ++++++++++++++------
hw/mem/cxl_type3.c | 292 +++++++++++++++++++++++++++++++++++-
hw/mem/cxl_type3_stubs.c | 35 +++++
hw/cxl/meson.build | 1 +
9 files changed, 1165 insertions(+), 56 deletions(-)
create mode 100644 include/hw/cxl/cxl_events.h
create mode 100644 hw/cxl/cxl-events.c
--
2.39.2
^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH v9 0/7] QEMU CXL Provide mock CXL events and irq support
@ 2023-05-30 13:35 ` Jonathan Cameron via
0 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron via @ 2023-05-30 13:35 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
v9: A few remaining QMP documentation formatting fixes from Markus.
Fingers crossed it's now clean!
Based on:
[PATCH v8 0/4] hw/cxl: Poison get, inject, clear
Based on: Message-ID: 20230526170010.574-1-Jonathan.Cameron@huawei.com
Updated cover letter from earlier versions:
One challenge here is striking the right balance between lots of constraints
in the injection code to enforce particular reserved bits etc by breaking
out all the flags as individual parameters vs having a reasonably concise
API. I think this set strikes the right balance but others may well
disagree :) Note that Ira raised the question of whether we should be
automatically establishing the volatile flag based on the Device Physical
Address of the injected error. My proposal is to not do so for now, but
to possibly revisit tightening the checking of injected errors in future.
Whilst the volatile flag is straight forwards, some of the other flags that
could be automatically set (or perhaps checked for validiaty) are much more
complex. Adding verification at this stage would greatly increase the
complexity of the patch + we are missing other elements that would interact
with this. I'm not concerned about potential breaking of backwards compatibility
if it only related to the injection of errors that make no sense for a real
device.
CXL Event records inform the OS of various CXL device events. Thus far CXL
memory devices are emulated and therefore don't naturally generate events.
Add an event infrastructure and mock event injection. Previous versions
included a bulk insertion of lots of events. However, this series focuses on
providing the ability to inject individual events through QMP. Only the
General Media Event is included in this series as an example. Other events can
be added pretty easily once the infrastructure is acceptable.
In addition, this version updates the code to be in line with the
specification based on discussions around the kernel patches.
Injection examples;
{ "execute": "cxl-inject-general-media-event",
"arguments": {
"path": "/machine/peripheral/cxl-mem0",
"log": "informational",
"flags": 1,
"dpa": 1000,
"descriptor": 3,
"type": 3,
"transaction-type": 192,
"channel": 3,
"device": 5,
"component-id": "iras mem"
}}
{ "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]
}}
{ "execute": "cxl-inject-memory-module-event",
"arguments": {
"path": "/machine/peripheral/cxl-mem0",
"log": "informational",
"flags": 1,
"type": 3,
"health-status": 3,
"media-status": 7,
"additional-status": 33,
"life-used": 30,
"temperature": -15,
"dirty-shutdown-count": 4,
"corrected-volatile-error-count": 3233,
"corrected-persistent-error-count": 1300
}}
Ira Weiny (4):
hw/cxl/events: Add event status register
hw/cxl/events: Wire up get/clear event mailbox commands
hw/cxl/events: Add event interrupt support
hw/cxl/events: Add injection of General Media Events
Jonathan Cameron (3):
hw/cxl: Move CXLRetCode definition to cxl_device.h
hw/cxl/events: Add injection of DRAM events
hw/cxl/events: Add injection of Memory Module Events
qapi/cxl.json | 188 +++++++++++++++++++++++
include/hw/cxl/cxl_device.h | 80 +++++++++-
include/hw/cxl/cxl_events.h | 168 +++++++++++++++++++++
hw/cxl/cxl-device-utils.c | 43 +++++-
hw/cxl/cxl-events.c | 248 ++++++++++++++++++++++++++++++
hw/cxl/cxl-mailbox-utils.c | 166 ++++++++++++++------
hw/mem/cxl_type3.c | 292 +++++++++++++++++++++++++++++++++++-
hw/mem/cxl_type3_stubs.c | 35 +++++
hw/cxl/meson.build | 1 +
9 files changed, 1165 insertions(+), 56 deletions(-)
create mode 100644 include/hw/cxl/cxl_events.h
create mode 100644 hw/cxl/cxl-events.c
--
2.39.2
^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH v9 1/7] hw/cxl/events: Add event status register
2023-05-30 13:35 ` Jonathan Cameron via
@ 2023-05-30 13:35 ` Jonathan Cameron via
-1 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron @ 2023-05-30 13:35 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
From: Ira Weiny <ira.weiny@intel.com>
The device status register block was defined. However, there were no
individual registers nor any data wired up.
Define the event status register [CXL 3.0; 8.2.8.3.1] as part of the
device status register block. Wire up the register and initialize the
event status for each log.
To support CXL 3.0 the version of the device status register block needs
to be 2. Change the macro to allow for setting the version.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
include/hw/cxl/cxl_device.h | 23 +++++++++++++++++---
include/hw/cxl/cxl_events.h | 28 ++++++++++++++++++++++++
hw/cxl/cxl-device-utils.c | 43 ++++++++++++++++++++++++++++++++-----
3 files changed, 86 insertions(+), 8 deletions(-)
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index 73328a52cf..16993f7098 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -13,6 +13,7 @@
#include "hw/cxl/cxl_component.h"
#include "hw/pci/pci_device.h"
#include "hw/register.h"
+#include "hw/cxl/cxl_events.h"
/*
* The following is how a CXL device's Memory Device registers are laid out.
@@ -86,7 +87,16 @@ typedef struct cxl_device_state {
MemoryRegion device_registers;
/* mmio for device capabilities array - 8.2.8.2 */
- MemoryRegion device;
+ struct {
+ MemoryRegion device;
+ union {
+ uint8_t dev_reg_state[CXL_DEVICE_STATUS_REGISTERS_LENGTH];
+ uint16_t dev_reg_state16[CXL_DEVICE_STATUS_REGISTERS_LENGTH / 2];
+ uint32_t dev_reg_state32[CXL_DEVICE_STATUS_REGISTERS_LENGTH / 4];
+ uint64_t dev_reg_state64[CXL_DEVICE_STATUS_REGISTERS_LENGTH / 8];
+ };
+ uint64_t event_status;
+ };
MemoryRegion memory_device;
struct {
MemoryRegion caps;
@@ -141,6 +151,9 @@ REG64(CXL_DEV_CAP_ARRAY, 0) /* Documented as 128 bit register but 64 byte access
FIELD(CXL_DEV_CAP_ARRAY, CAP_VERSION, 16, 8)
FIELD(CXL_DEV_CAP_ARRAY, CAP_COUNT, 32, 16)
+void cxl_event_set_status(CXLDeviceState *cxl_dstate, CXLEventLogType log_type,
+ bool available);
+
/*
* Helper macro to initialize capability headers for CXL devices.
*
@@ -175,7 +188,7 @@ CXL_DEVICE_CAPABILITY_HEADER_REGISTER(MEMORY_DEVICE,
void cxl_initialize_mailbox(CXLDeviceState *cxl_dstate);
void cxl_process_mailbox(CXLDeviceState *cxl_dstate);
-#define cxl_device_cap_init(dstate, reg, cap_id) \
+#define cxl_device_cap_init(dstate, reg, cap_id, ver) \
do { \
uint32_t *cap_hdrs = dstate->caps_reg_state32; \
int which = R_CXL_DEV_##reg##_CAP_HDR0; \
@@ -183,7 +196,7 @@ void cxl_process_mailbox(CXLDeviceState *cxl_dstate);
FIELD_DP32(cap_hdrs[which], CXL_DEV_##reg##_CAP_HDR0, \
CAP_ID, cap_id); \
cap_hdrs[which] = FIELD_DP32( \
- cap_hdrs[which], CXL_DEV_##reg##_CAP_HDR0, CAP_VERSION, 1); \
+ cap_hdrs[which], CXL_DEV_##reg##_CAP_HDR0, CAP_VERSION, ver); \
cap_hdrs[which + 1] = \
FIELD_DP32(cap_hdrs[which + 1], CXL_DEV_##reg##_CAP_HDR1, \
CAP_OFFSET, CXL_##reg##_REGISTERS_OFFSET); \
@@ -192,6 +205,10 @@ void cxl_process_mailbox(CXLDeviceState *cxl_dstate);
CAP_LENGTH, CXL_##reg##_REGISTERS_LENGTH); \
} while (0)
+/* CXL 3.0 8.2.8.3.1 Event Status Register */
+REG64(CXL_DEV_EVENT_STATUS, 0)
+ FIELD(CXL_DEV_EVENT_STATUS, EVENT_STATUS, 0, 32)
+
/* CXL 2.0 8.2.8.4.3 Mailbox Capabilities Register */
REG32(CXL_DEV_MAILBOX_CAP, 0)
FIELD(CXL_DEV_MAILBOX_CAP, PAYLOAD_SIZE, 0, 5)
diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h
new file mode 100644
index 0000000000..aeb3b0590e
--- /dev/null
+++ b/include/hw/cxl/cxl_events.h
@@ -0,0 +1,28 @@
+/*
+ * QEMU CXL Events
+ *
+ * Copyright (c) 2022 Intel
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See the
+ * COPYING file in the top-level directory.
+ */
+
+#ifndef CXL_EVENTS_H
+#define CXL_EVENTS_H
+
+/*
+ * CXL rev 3.0 section 8.2.9.2.2; Table 8-49
+ *
+ * Define these as the bit position for the event status register for ease of
+ * setting the status.
+ */
+typedef enum CXLEventLogType {
+ CXL_EVENT_TYPE_INFO = 0,
+ CXL_EVENT_TYPE_WARN = 1,
+ CXL_EVENT_TYPE_FAIL = 2,
+ CXL_EVENT_TYPE_FATAL = 3,
+ CXL_EVENT_TYPE_DYNAMIC_CAP = 4,
+ CXL_EVENT_TYPE_MAX
+} CXLEventLogType;
+
+#endif /* CXL_EVENTS_H */
diff --git a/hw/cxl/cxl-device-utils.c b/hw/cxl/cxl-device-utils.c
index 86e1cea8ce..517f06d869 100644
--- a/hw/cxl/cxl-device-utils.c
+++ b/hw/cxl/cxl-device-utils.c
@@ -41,7 +41,20 @@ static uint64_t caps_reg_read(void *opaque, hwaddr offset, unsigned size)
static uint64_t dev_reg_read(void *opaque, hwaddr offset, unsigned size)
{
- return 0;
+ CXLDeviceState *cxl_dstate = opaque;
+
+ switch (size) {
+ case 1:
+ return cxl_dstate->dev_reg_state[offset];
+ case 2:
+ return cxl_dstate->dev_reg_state16[offset / size];
+ case 4:
+ return cxl_dstate->dev_reg_state32[offset / size];
+ case 8:
+ return cxl_dstate->dev_reg_state64[offset / size];
+ default:
+ g_assert_not_reached();
+ }
}
static uint64_t mailbox_reg_read(void *opaque, hwaddr offset, unsigned size)
@@ -236,7 +249,27 @@ void cxl_device_register_block_init(Object *obj, CXLDeviceState *cxl_dstate)
&cxl_dstate->memory_device);
}
-static void device_reg_init_common(CXLDeviceState *cxl_dstate) { }
+void cxl_event_set_status(CXLDeviceState *cxl_dstate, CXLEventLogType log_type,
+ bool available)
+{
+ if (available) {
+ cxl_dstate->event_status |= (1 << log_type);
+ } else {
+ cxl_dstate->event_status &= ~(1 << log_type);
+ }
+
+ ARRAY_FIELD_DP64(cxl_dstate->dev_reg_state64, CXL_DEV_EVENT_STATUS,
+ EVENT_STATUS, cxl_dstate->event_status);
+}
+
+static void device_reg_init_common(CXLDeviceState *cxl_dstate)
+{
+ CXLEventLogType log;
+
+ for (log = 0; log < CXL_EVENT_TYPE_MAX; log++) {
+ cxl_event_set_status(cxl_dstate, log, false);
+ }
+}
static void mailbox_reg_init_common(CXLDeviceState *cxl_dstate)
{
@@ -258,13 +291,13 @@ void cxl_device_register_init_common(CXLDeviceState *cxl_dstate)
ARRAY_FIELD_DP64(cap_hdrs, CXL_DEV_CAP_ARRAY, CAP_VERSION, 1);
ARRAY_FIELD_DP64(cap_hdrs, CXL_DEV_CAP_ARRAY, CAP_COUNT, cap_count);
- cxl_device_cap_init(cxl_dstate, DEVICE_STATUS, 1);
+ cxl_device_cap_init(cxl_dstate, DEVICE_STATUS, 1, 2);
device_reg_init_common(cxl_dstate);
- cxl_device_cap_init(cxl_dstate, MAILBOX, 2);
+ cxl_device_cap_init(cxl_dstate, MAILBOX, 2, 1);
mailbox_reg_init_common(cxl_dstate);
- cxl_device_cap_init(cxl_dstate, MEMORY_DEVICE, 0x4000);
+ cxl_device_cap_init(cxl_dstate, MEMORY_DEVICE, 0x4000, 1);
memdev_reg_init_common(cxl_dstate);
cxl_initialize_mailbox(cxl_dstate);
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 1/7] hw/cxl/events: Add event status register
@ 2023-05-30 13:35 ` Jonathan Cameron via
0 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron via @ 2023-05-30 13:35 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
From: Ira Weiny <ira.weiny@intel.com>
The device status register block was defined. However, there were no
individual registers nor any data wired up.
Define the event status register [CXL 3.0; 8.2.8.3.1] as part of the
device status register block. Wire up the register and initialize the
event status for each log.
To support CXL 3.0 the version of the device status register block needs
to be 2. Change the macro to allow for setting the version.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
include/hw/cxl/cxl_device.h | 23 +++++++++++++++++---
include/hw/cxl/cxl_events.h | 28 ++++++++++++++++++++++++
hw/cxl/cxl-device-utils.c | 43 ++++++++++++++++++++++++++++++++-----
3 files changed, 86 insertions(+), 8 deletions(-)
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index 73328a52cf..16993f7098 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -13,6 +13,7 @@
#include "hw/cxl/cxl_component.h"
#include "hw/pci/pci_device.h"
#include "hw/register.h"
+#include "hw/cxl/cxl_events.h"
/*
* The following is how a CXL device's Memory Device registers are laid out.
@@ -86,7 +87,16 @@ typedef struct cxl_device_state {
MemoryRegion device_registers;
/* mmio for device capabilities array - 8.2.8.2 */
- MemoryRegion device;
+ struct {
+ MemoryRegion device;
+ union {
+ uint8_t dev_reg_state[CXL_DEVICE_STATUS_REGISTERS_LENGTH];
+ uint16_t dev_reg_state16[CXL_DEVICE_STATUS_REGISTERS_LENGTH / 2];
+ uint32_t dev_reg_state32[CXL_DEVICE_STATUS_REGISTERS_LENGTH / 4];
+ uint64_t dev_reg_state64[CXL_DEVICE_STATUS_REGISTERS_LENGTH / 8];
+ };
+ uint64_t event_status;
+ };
MemoryRegion memory_device;
struct {
MemoryRegion caps;
@@ -141,6 +151,9 @@ REG64(CXL_DEV_CAP_ARRAY, 0) /* Documented as 128 bit register but 64 byte access
FIELD(CXL_DEV_CAP_ARRAY, CAP_VERSION, 16, 8)
FIELD(CXL_DEV_CAP_ARRAY, CAP_COUNT, 32, 16)
+void cxl_event_set_status(CXLDeviceState *cxl_dstate, CXLEventLogType log_type,
+ bool available);
+
/*
* Helper macro to initialize capability headers for CXL devices.
*
@@ -175,7 +188,7 @@ CXL_DEVICE_CAPABILITY_HEADER_REGISTER(MEMORY_DEVICE,
void cxl_initialize_mailbox(CXLDeviceState *cxl_dstate);
void cxl_process_mailbox(CXLDeviceState *cxl_dstate);
-#define cxl_device_cap_init(dstate, reg, cap_id) \
+#define cxl_device_cap_init(dstate, reg, cap_id, ver) \
do { \
uint32_t *cap_hdrs = dstate->caps_reg_state32; \
int which = R_CXL_DEV_##reg##_CAP_HDR0; \
@@ -183,7 +196,7 @@ void cxl_process_mailbox(CXLDeviceState *cxl_dstate);
FIELD_DP32(cap_hdrs[which], CXL_DEV_##reg##_CAP_HDR0, \
CAP_ID, cap_id); \
cap_hdrs[which] = FIELD_DP32( \
- cap_hdrs[which], CXL_DEV_##reg##_CAP_HDR0, CAP_VERSION, 1); \
+ cap_hdrs[which], CXL_DEV_##reg##_CAP_HDR0, CAP_VERSION, ver); \
cap_hdrs[which + 1] = \
FIELD_DP32(cap_hdrs[which + 1], CXL_DEV_##reg##_CAP_HDR1, \
CAP_OFFSET, CXL_##reg##_REGISTERS_OFFSET); \
@@ -192,6 +205,10 @@ void cxl_process_mailbox(CXLDeviceState *cxl_dstate);
CAP_LENGTH, CXL_##reg##_REGISTERS_LENGTH); \
} while (0)
+/* CXL 3.0 8.2.8.3.1 Event Status Register */
+REG64(CXL_DEV_EVENT_STATUS, 0)
+ FIELD(CXL_DEV_EVENT_STATUS, EVENT_STATUS, 0, 32)
+
/* CXL 2.0 8.2.8.4.3 Mailbox Capabilities Register */
REG32(CXL_DEV_MAILBOX_CAP, 0)
FIELD(CXL_DEV_MAILBOX_CAP, PAYLOAD_SIZE, 0, 5)
diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h
new file mode 100644
index 0000000000..aeb3b0590e
--- /dev/null
+++ b/include/hw/cxl/cxl_events.h
@@ -0,0 +1,28 @@
+/*
+ * QEMU CXL Events
+ *
+ * Copyright (c) 2022 Intel
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See the
+ * COPYING file in the top-level directory.
+ */
+
+#ifndef CXL_EVENTS_H
+#define CXL_EVENTS_H
+
+/*
+ * CXL rev 3.0 section 8.2.9.2.2; Table 8-49
+ *
+ * Define these as the bit position for the event status register for ease of
+ * setting the status.
+ */
+typedef enum CXLEventLogType {
+ CXL_EVENT_TYPE_INFO = 0,
+ CXL_EVENT_TYPE_WARN = 1,
+ CXL_EVENT_TYPE_FAIL = 2,
+ CXL_EVENT_TYPE_FATAL = 3,
+ CXL_EVENT_TYPE_DYNAMIC_CAP = 4,
+ CXL_EVENT_TYPE_MAX
+} CXLEventLogType;
+
+#endif /* CXL_EVENTS_H */
diff --git a/hw/cxl/cxl-device-utils.c b/hw/cxl/cxl-device-utils.c
index 86e1cea8ce..517f06d869 100644
--- a/hw/cxl/cxl-device-utils.c
+++ b/hw/cxl/cxl-device-utils.c
@@ -41,7 +41,20 @@ static uint64_t caps_reg_read(void *opaque, hwaddr offset, unsigned size)
static uint64_t dev_reg_read(void *opaque, hwaddr offset, unsigned size)
{
- return 0;
+ CXLDeviceState *cxl_dstate = opaque;
+
+ switch (size) {
+ case 1:
+ return cxl_dstate->dev_reg_state[offset];
+ case 2:
+ return cxl_dstate->dev_reg_state16[offset / size];
+ case 4:
+ return cxl_dstate->dev_reg_state32[offset / size];
+ case 8:
+ return cxl_dstate->dev_reg_state64[offset / size];
+ default:
+ g_assert_not_reached();
+ }
}
static uint64_t mailbox_reg_read(void *opaque, hwaddr offset, unsigned size)
@@ -236,7 +249,27 @@ void cxl_device_register_block_init(Object *obj, CXLDeviceState *cxl_dstate)
&cxl_dstate->memory_device);
}
-static void device_reg_init_common(CXLDeviceState *cxl_dstate) { }
+void cxl_event_set_status(CXLDeviceState *cxl_dstate, CXLEventLogType log_type,
+ bool available)
+{
+ if (available) {
+ cxl_dstate->event_status |= (1 << log_type);
+ } else {
+ cxl_dstate->event_status &= ~(1 << log_type);
+ }
+
+ ARRAY_FIELD_DP64(cxl_dstate->dev_reg_state64, CXL_DEV_EVENT_STATUS,
+ EVENT_STATUS, cxl_dstate->event_status);
+}
+
+static void device_reg_init_common(CXLDeviceState *cxl_dstate)
+{
+ CXLEventLogType log;
+
+ for (log = 0; log < CXL_EVENT_TYPE_MAX; log++) {
+ cxl_event_set_status(cxl_dstate, log, false);
+ }
+}
static void mailbox_reg_init_common(CXLDeviceState *cxl_dstate)
{
@@ -258,13 +291,13 @@ void cxl_device_register_init_common(CXLDeviceState *cxl_dstate)
ARRAY_FIELD_DP64(cap_hdrs, CXL_DEV_CAP_ARRAY, CAP_VERSION, 1);
ARRAY_FIELD_DP64(cap_hdrs, CXL_DEV_CAP_ARRAY, CAP_COUNT, cap_count);
- cxl_device_cap_init(cxl_dstate, DEVICE_STATUS, 1);
+ cxl_device_cap_init(cxl_dstate, DEVICE_STATUS, 1, 2);
device_reg_init_common(cxl_dstate);
- cxl_device_cap_init(cxl_dstate, MAILBOX, 2);
+ cxl_device_cap_init(cxl_dstate, MAILBOX, 2, 1);
mailbox_reg_init_common(cxl_dstate);
- cxl_device_cap_init(cxl_dstate, MEMORY_DEVICE, 0x4000);
+ cxl_device_cap_init(cxl_dstate, MEMORY_DEVICE, 0x4000, 1);
memdev_reg_init_common(cxl_dstate);
cxl_initialize_mailbox(cxl_dstate);
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 2/7] hw/cxl: Move CXLRetCode definition to cxl_device.h
2023-05-30 13:35 ` Jonathan Cameron via
@ 2023-05-30 13:35 ` Jonathan Cameron via
-1 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron @ 2023-05-30 13:35 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
Following patches will need access to the mailbox return code
type so move it to the header.
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
include/hw/cxl/cxl_device.h | 28 ++++++++++++++++++++++++++++
hw/cxl/cxl-mailbox-utils.c | 28 ----------------------------
2 files changed, 28 insertions(+), 28 deletions(-)
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index 16993f7098..9f8ee85f8a 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -83,6 +83,34 @@
(CXL_DEVICE_CAP_REG_SIZE + CXL_DEVICE_STATUS_REGISTERS_LENGTH + \
CXL_MAILBOX_REGISTERS_LENGTH + CXL_MEMORY_DEVICE_REGISTERS_LENGTH)
+/* 8.2.8.4.5.1 Command Return Codes */
+typedef enum {
+ CXL_MBOX_SUCCESS = 0x0,
+ CXL_MBOX_BG_STARTED = 0x1,
+ CXL_MBOX_INVALID_INPUT = 0x2,
+ CXL_MBOX_UNSUPPORTED = 0x3,
+ CXL_MBOX_INTERNAL_ERROR = 0x4,
+ CXL_MBOX_RETRY_REQUIRED = 0x5,
+ CXL_MBOX_BUSY = 0x6,
+ CXL_MBOX_MEDIA_DISABLED = 0x7,
+ CXL_MBOX_FW_XFER_IN_PROGRESS = 0x8,
+ CXL_MBOX_FW_XFER_OUT_OF_ORDER = 0x9,
+ CXL_MBOX_FW_AUTH_FAILED = 0xa,
+ CXL_MBOX_FW_INVALID_SLOT = 0xb,
+ CXL_MBOX_FW_ROLLEDBACK = 0xc,
+ CXL_MBOX_FW_REST_REQD = 0xd,
+ CXL_MBOX_INVALID_HANDLE = 0xe,
+ CXL_MBOX_INVALID_PA = 0xf,
+ CXL_MBOX_INJECT_POISON_LIMIT = 0x10,
+ CXL_MBOX_PERMANENT_MEDIA_FAILURE = 0x11,
+ CXL_MBOX_ABORTED = 0x12,
+ CXL_MBOX_INVALID_SECURITY_STATE = 0x13,
+ CXL_MBOX_INCORRECT_PASSPHRASE = 0x14,
+ CXL_MBOX_UNSUPPORTED_MAILBOX = 0x15,
+ CXL_MBOX_INVALID_PAYLOAD_LENGTH = 0x16,
+ CXL_MBOX_MAX = 0x17
+} CXLRetCode;
+
typedef struct cxl_device_state {
MemoryRegion device_registers;
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index e3401b6be8..d7e114aaae 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -68,34 +68,6 @@ enum {
#define CLEAR_POISON 0x2
};
-/* 8.2.8.4.5.1 Command Return Codes */
-typedef enum {
- CXL_MBOX_SUCCESS = 0x0,
- CXL_MBOX_BG_STARTED = 0x1,
- CXL_MBOX_INVALID_INPUT = 0x2,
- CXL_MBOX_UNSUPPORTED = 0x3,
- CXL_MBOX_INTERNAL_ERROR = 0x4,
- CXL_MBOX_RETRY_REQUIRED = 0x5,
- CXL_MBOX_BUSY = 0x6,
- CXL_MBOX_MEDIA_DISABLED = 0x7,
- CXL_MBOX_FW_XFER_IN_PROGRESS = 0x8,
- CXL_MBOX_FW_XFER_OUT_OF_ORDER = 0x9,
- CXL_MBOX_FW_AUTH_FAILED = 0xa,
- CXL_MBOX_FW_INVALID_SLOT = 0xb,
- CXL_MBOX_FW_ROLLEDBACK = 0xc,
- CXL_MBOX_FW_REST_REQD = 0xd,
- CXL_MBOX_INVALID_HANDLE = 0xe,
- CXL_MBOX_INVALID_PA = 0xf,
- CXL_MBOX_INJECT_POISON_LIMIT = 0x10,
- CXL_MBOX_PERMANENT_MEDIA_FAILURE = 0x11,
- CXL_MBOX_ABORTED = 0x12,
- CXL_MBOX_INVALID_SECURITY_STATE = 0x13,
- CXL_MBOX_INCORRECT_PASSPHRASE = 0x14,
- CXL_MBOX_UNSUPPORTED_MAILBOX = 0x15,
- CXL_MBOX_INVALID_PAYLOAD_LENGTH = 0x16,
- CXL_MBOX_MAX = 0x17
-} CXLRetCode;
-
struct cxl_cmd;
typedef CXLRetCode (*opcode_handler)(struct cxl_cmd *cmd,
CXLDeviceState *cxl_dstate, uint16_t *len);
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 2/7] hw/cxl: Move CXLRetCode definition to cxl_device.h
@ 2023-05-30 13:35 ` Jonathan Cameron via
0 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron via @ 2023-05-30 13:35 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
Following patches will need access to the mailbox return code
type so move it to the header.
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
include/hw/cxl/cxl_device.h | 28 ++++++++++++++++++++++++++++
hw/cxl/cxl-mailbox-utils.c | 28 ----------------------------
2 files changed, 28 insertions(+), 28 deletions(-)
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index 16993f7098..9f8ee85f8a 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -83,6 +83,34 @@
(CXL_DEVICE_CAP_REG_SIZE + CXL_DEVICE_STATUS_REGISTERS_LENGTH + \
CXL_MAILBOX_REGISTERS_LENGTH + CXL_MEMORY_DEVICE_REGISTERS_LENGTH)
+/* 8.2.8.4.5.1 Command Return Codes */
+typedef enum {
+ CXL_MBOX_SUCCESS = 0x0,
+ CXL_MBOX_BG_STARTED = 0x1,
+ CXL_MBOX_INVALID_INPUT = 0x2,
+ CXL_MBOX_UNSUPPORTED = 0x3,
+ CXL_MBOX_INTERNAL_ERROR = 0x4,
+ CXL_MBOX_RETRY_REQUIRED = 0x5,
+ CXL_MBOX_BUSY = 0x6,
+ CXL_MBOX_MEDIA_DISABLED = 0x7,
+ CXL_MBOX_FW_XFER_IN_PROGRESS = 0x8,
+ CXL_MBOX_FW_XFER_OUT_OF_ORDER = 0x9,
+ CXL_MBOX_FW_AUTH_FAILED = 0xa,
+ CXL_MBOX_FW_INVALID_SLOT = 0xb,
+ CXL_MBOX_FW_ROLLEDBACK = 0xc,
+ CXL_MBOX_FW_REST_REQD = 0xd,
+ CXL_MBOX_INVALID_HANDLE = 0xe,
+ CXL_MBOX_INVALID_PA = 0xf,
+ CXL_MBOX_INJECT_POISON_LIMIT = 0x10,
+ CXL_MBOX_PERMANENT_MEDIA_FAILURE = 0x11,
+ CXL_MBOX_ABORTED = 0x12,
+ CXL_MBOX_INVALID_SECURITY_STATE = 0x13,
+ CXL_MBOX_INCORRECT_PASSPHRASE = 0x14,
+ CXL_MBOX_UNSUPPORTED_MAILBOX = 0x15,
+ CXL_MBOX_INVALID_PAYLOAD_LENGTH = 0x16,
+ CXL_MBOX_MAX = 0x17
+} CXLRetCode;
+
typedef struct cxl_device_state {
MemoryRegion device_registers;
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index e3401b6be8..d7e114aaae 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -68,34 +68,6 @@ enum {
#define CLEAR_POISON 0x2
};
-/* 8.2.8.4.5.1 Command Return Codes */
-typedef enum {
- CXL_MBOX_SUCCESS = 0x0,
- CXL_MBOX_BG_STARTED = 0x1,
- CXL_MBOX_INVALID_INPUT = 0x2,
- CXL_MBOX_UNSUPPORTED = 0x3,
- CXL_MBOX_INTERNAL_ERROR = 0x4,
- CXL_MBOX_RETRY_REQUIRED = 0x5,
- CXL_MBOX_BUSY = 0x6,
- CXL_MBOX_MEDIA_DISABLED = 0x7,
- CXL_MBOX_FW_XFER_IN_PROGRESS = 0x8,
- CXL_MBOX_FW_XFER_OUT_OF_ORDER = 0x9,
- CXL_MBOX_FW_AUTH_FAILED = 0xa,
- CXL_MBOX_FW_INVALID_SLOT = 0xb,
- CXL_MBOX_FW_ROLLEDBACK = 0xc,
- CXL_MBOX_FW_REST_REQD = 0xd,
- CXL_MBOX_INVALID_HANDLE = 0xe,
- CXL_MBOX_INVALID_PA = 0xf,
- CXL_MBOX_INJECT_POISON_LIMIT = 0x10,
- CXL_MBOX_PERMANENT_MEDIA_FAILURE = 0x11,
- CXL_MBOX_ABORTED = 0x12,
- CXL_MBOX_INVALID_SECURITY_STATE = 0x13,
- CXL_MBOX_INCORRECT_PASSPHRASE = 0x14,
- CXL_MBOX_UNSUPPORTED_MAILBOX = 0x15,
- CXL_MBOX_INVALID_PAYLOAD_LENGTH = 0x16,
- CXL_MBOX_MAX = 0x17
-} CXLRetCode;
-
struct cxl_cmd;
typedef CXLRetCode (*opcode_handler)(struct cxl_cmd *cmd,
CXLDeviceState *cxl_dstate, uint16_t *len);
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 3/7] hw/cxl/events: Wire up get/clear event mailbox commands
2023-05-30 13:35 ` Jonathan Cameron via
@ 2023-05-30 13:35 ` Jonathan Cameron via
-1 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron @ 2023-05-30 13:35 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
From: Ira Weiny <ira.weiny@intel.com>
CXL testing is benefited from an artificial event log injection
mechanism.
Add an event log infrastructure to insert, get, and clear events from
the various logs available on a device.
Replace the stubbed out CXL Get/Clear Event mailbox commands with
commands that operate on the new infrastructure.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
include/hw/cxl/cxl_device.h | 25 +++++
include/hw/cxl/cxl_events.h | 55 +++++++++
hw/cxl/cxl-events.c | 217 ++++++++++++++++++++++++++++++++++++
hw/cxl/cxl-mailbox-utils.c | 40 ++++++-
hw/mem/cxl_type3.c | 1 +
hw/cxl/meson.build | 1 +
6 files changed, 337 insertions(+), 2 deletions(-)
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index 9f8ee85f8a..d3aec1bc0e 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -111,6 +111,20 @@ typedef enum {
CXL_MBOX_MAX = 0x17
} CXLRetCode;
+typedef struct CXLEvent {
+ CXLEventRecordRaw data;
+ QSIMPLEQ_ENTRY(CXLEvent) node;
+} CXLEvent;
+
+typedef struct CXLEventLog {
+ uint16_t next_handle;
+ uint16_t overflow_err_count;
+ uint64_t first_overflow_timestamp;
+ uint64_t last_overflow_timestamp;
+ QemuMutex lock;
+ QSIMPLEQ_HEAD(, CXLEvent) events;
+} CXLEventLog;
+
typedef struct cxl_device_state {
MemoryRegion device_registers;
@@ -161,6 +175,8 @@ typedef struct cxl_device_state {
uint64_t mem_size;
uint64_t pmem_size;
uint64_t vmem_size;
+
+ CXLEventLog event_logs[CXL_EVENT_TYPE_MAX];
} CXLDeviceState;
/* Initialize the register block for a device */
@@ -353,6 +369,15 @@ MemTxResult cxl_type3_write(PCIDevice *d, hwaddr host_addr, uint64_t data,
uint64_t cxl_device_get_timestamp(CXLDeviceState *cxlds);
+void cxl_event_init(CXLDeviceState *cxlds);
+bool cxl_event_insert(CXLDeviceState *cxlds, CXLEventLogType log_type,
+ CXLEventRecordRaw *event);
+CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
+ uint8_t log_type, int max_recs,
+ uint16_t *len);
+CXLRetCode cxl_event_clear_records(CXLDeviceState *cxlds,
+ CXLClearEventPayload *pl);
+
void cxl_set_poison_list_overflowed(CXLType3Dev *ct3d);
#endif
diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h
index aeb3b0590e..d4aaa894f1 100644
--- a/include/hw/cxl/cxl_events.h
+++ b/include/hw/cxl/cxl_events.h
@@ -10,6 +10,8 @@
#ifndef CXL_EVENTS_H
#define CXL_EVENTS_H
+#include "qemu/uuid.h"
+
/*
* CXL rev 3.0 section 8.2.9.2.2; Table 8-49
*
@@ -25,4 +27,57 @@ typedef enum CXLEventLogType {
CXL_EVENT_TYPE_MAX
} CXLEventLogType;
+/*
+ * Common Event Record Format
+ * CXL rev 3.0 section 8.2.9.2.1; Table 8-42
+ */
+#define CXL_EVENT_REC_HDR_RES_LEN 0xf
+typedef struct CXLEventRecordHdr {
+ QemuUUID id;
+ uint8_t length;
+ uint8_t flags[3];
+ uint16_t handle;
+ uint16_t related_handle;
+ uint64_t timestamp;
+ uint8_t maint_op_class;
+ uint8_t reserved[CXL_EVENT_REC_HDR_RES_LEN];
+} QEMU_PACKED CXLEventRecordHdr;
+
+#define CXL_EVENT_RECORD_DATA_LENGTH 0x50
+typedef struct CXLEventRecordRaw {
+ CXLEventRecordHdr hdr;
+ uint8_t data[CXL_EVENT_RECORD_DATA_LENGTH];
+} QEMU_PACKED CXLEventRecordRaw;
+#define CXL_EVENT_RECORD_SIZE (sizeof(CXLEventRecordRaw))
+
+/*
+ * Get Event Records output payload
+ * CXL rev 3.0 section 8.2.9.2.2; Table 8-50
+ */
+#define CXL_GET_EVENT_FLAG_OVERFLOW BIT(0)
+#define CXL_GET_EVENT_FLAG_MORE_RECORDS BIT(1)
+typedef struct CXLGetEventPayload {
+ uint8_t flags;
+ uint8_t reserved1;
+ uint16_t overflow_err_count;
+ uint64_t first_overflow_timestamp;
+ uint64_t last_overflow_timestamp;
+ uint16_t record_count;
+ uint8_t reserved2[0xa];
+ CXLEventRecordRaw records[];
+} QEMU_PACKED CXLGetEventPayload;
+#define CXL_EVENT_PAYLOAD_HDR_SIZE (sizeof(CXLGetEventPayload))
+
+/*
+ * Clear Event Records input payload
+ * CXL rev 3.0 section 8.2.9.2.3; Table 8-51
+ */
+typedef struct CXLClearEventPayload {
+ uint8_t event_log; /* CXLEventLogType */
+ uint8_t clear_flags;
+ uint8_t nr_recs;
+ uint8_t reserved[3];
+ uint16_t handle[];
+} CXLClearEventPayload;
+
#endif /* CXL_EVENTS_H */
diff --git a/hw/cxl/cxl-events.c b/hw/cxl/cxl-events.c
new file mode 100644
index 0000000000..5da1b76b97
--- /dev/null
+++ b/hw/cxl/cxl-events.c
@@ -0,0 +1,217 @@
+/*
+ * CXL Event processing
+ *
+ * Copyright(C) 2023 Intel Corporation.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See the
+ * COPYING file in the top-level directory.
+ */
+
+#include <stdint.h>
+
+#include "qemu/osdep.h"
+#include "qemu/bswap.h"
+#include "qemu/typedefs.h"
+#include "qemu/error-report.h"
+#include "hw/cxl/cxl.h"
+#include "hw/cxl/cxl_events.h"
+
+/* Artificial limit on the number of events a log can hold */
+#define CXL_TEST_EVENT_OVERFLOW 8
+
+static void reset_overflow(CXLEventLog *log)
+{
+ log->overflow_err_count = 0;
+ log->first_overflow_timestamp = 0;
+ log->last_overflow_timestamp = 0;
+}
+
+void cxl_event_init(CXLDeviceState *cxlds)
+{
+ CXLEventLog *log;
+ int i;
+
+ for (i = 0; i < CXL_EVENT_TYPE_MAX; i++) {
+ log = &cxlds->event_logs[i];
+ log->next_handle = 1;
+ log->overflow_err_count = 0;
+ log->first_overflow_timestamp = 0;
+ log->last_overflow_timestamp = 0;
+ qemu_mutex_init(&log->lock);
+ QSIMPLEQ_INIT(&log->events);
+ }
+}
+
+static CXLEvent *cxl_event_get_head(CXLEventLog *log)
+{
+ return QSIMPLEQ_FIRST(&log->events);
+}
+
+static CXLEvent *cxl_event_get_next(CXLEvent *entry)
+{
+ return QSIMPLEQ_NEXT(entry, node);
+}
+
+static int cxl_event_count(CXLEventLog *log)
+{
+ CXLEvent *event;
+ int rc = 0;
+
+ QSIMPLEQ_FOREACH(event, &log->events, node) {
+ rc++;
+ }
+
+ return rc;
+}
+
+static bool cxl_event_empty(CXLEventLog *log)
+{
+ return QSIMPLEQ_EMPTY(&log->events);
+}
+
+static void cxl_event_delete_head(CXLDeviceState *cxlds,
+ CXLEventLogType log_type,
+ CXLEventLog *log)
+{
+ CXLEvent *entry = cxl_event_get_head(log);
+
+ reset_overflow(log);
+ QSIMPLEQ_REMOVE_HEAD(&log->events, node);
+ if (cxl_event_empty(log)) {
+ cxl_event_set_status(cxlds, log_type, false);
+ }
+ g_free(entry);
+}
+
+/*
+ * return true if an interrupt should be generated as a result
+ * of inserting this event.
+ */
+bool cxl_event_insert(CXLDeviceState *cxlds, CXLEventLogType log_type,
+ CXLEventRecordRaw *event)
+{
+ uint64_t time;
+ CXLEventLog *log;
+ CXLEvent *entry;
+
+ if (log_type >= CXL_EVENT_TYPE_MAX) {
+ return false;
+ }
+
+ time = cxl_device_get_timestamp(cxlds);
+
+ log = &cxlds->event_logs[log_type];
+
+ QEMU_LOCK_GUARD(&log->lock);
+
+ if (cxl_event_count(log) >= CXL_TEST_EVENT_OVERFLOW) {
+ if (log->overflow_err_count == 0) {
+ log->first_overflow_timestamp = time;
+ }
+ log->overflow_err_count++;
+ log->last_overflow_timestamp = time;
+ return false;
+ }
+
+ entry = g_new0(CXLEvent, 1);
+
+ memcpy(&entry->data, event, sizeof(*event));
+
+ entry->data.hdr.handle = cpu_to_le16(log->next_handle);
+ log->next_handle++;
+ /* 0 handle is never valid */
+ if (log->next_handle == 0) {
+ log->next_handle++;
+ }
+ entry->data.hdr.timestamp = cpu_to_le64(time);
+
+ QSIMPLEQ_INSERT_TAIL(&log->events, entry, node);
+ cxl_event_set_status(cxlds, log_type, true);
+
+ /* Count went from 0 to 1 */
+ return cxl_event_count(log) == 1;
+}
+
+CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
+ uint8_t log_type, int max_recs,
+ uint16_t *len)
+{
+ CXLEventLog *log;
+ CXLEvent *entry;
+ uint16_t nr;
+
+ if (log_type >= CXL_EVENT_TYPE_MAX) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ log = &cxlds->event_logs[log_type];
+
+ QEMU_LOCK_GUARD(&log->lock);
+
+ entry = cxl_event_get_head(log);
+ for (nr = 0; entry && nr < max_recs; nr++) {
+ memcpy(&pl->records[nr], &entry->data, CXL_EVENT_RECORD_SIZE);
+ entry = cxl_event_get_next(entry);
+ }
+
+ if (!cxl_event_empty(log)) {
+ pl->flags |= CXL_GET_EVENT_FLAG_MORE_RECORDS;
+ }
+
+ if (log->overflow_err_count) {
+ pl->flags |= CXL_GET_EVENT_FLAG_OVERFLOW;
+ pl->overflow_err_count = cpu_to_le16(log->overflow_err_count);
+ pl->first_overflow_timestamp = cpu_to_le64(log->first_overflow_timestamp);
+ pl->last_overflow_timestamp = cpu_to_le64(log->last_overflow_timestamp);
+ }
+
+ pl->record_count = cpu_to_le16(nr);
+ *len = CXL_EVENT_PAYLOAD_HDR_SIZE + (CXL_EVENT_RECORD_SIZE * nr);
+
+ return CXL_MBOX_SUCCESS;
+}
+
+CXLRetCode cxl_event_clear_records(CXLDeviceState *cxlds, CXLClearEventPayload *pl)
+{
+ CXLEventLog *log;
+ uint8_t log_type;
+ CXLEvent *entry;
+ int nr;
+
+ log_type = pl->event_log;
+
+ if (log_type >= CXL_EVENT_TYPE_MAX) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ log = &cxlds->event_logs[log_type];
+
+ QEMU_LOCK_GUARD(&log->lock);
+ /*
+ * Must itterate the queue twice.
+ * "The device shall verify the event record handles specified in the input
+ * payload are in temporal order. If the device detects an older event
+ * record that will not be cleared when Clear Event Records is executed,
+ * the device shall return the Invalid Handle return code and shall not
+ * clear any of the specified event records."
+ * -- CXL 3.0 8.2.9.2.3
+ */
+ entry = cxl_event_get_head(log);
+ for (nr = 0; entry && nr < pl->nr_recs; nr++) {
+ uint16_t handle = pl->handle[nr];
+
+ /* NOTE: Both handles are little endian. */
+ if (handle == 0 || entry->data.hdr.handle != handle) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+ entry = cxl_event_get_next(entry);
+ }
+
+ entry = cxl_event_get_head(log);
+ for (nr = 0; entry && nr < pl->nr_recs; nr++) {
+ cxl_event_delete_head(cxlds, log_type, log);
+ entry = cxl_event_get_head(log);
+ }
+
+ return CXL_MBOX_SUCCESS;
+}
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index d7e114aaae..3f46538048 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -9,6 +9,7 @@
#include "qemu/osdep.h"
#include "hw/cxl/cxl.h"
+#include "hw/cxl/cxl_events.h"
#include "hw/pci/pci.h"
#include "qemu/cutils.h"
#include "qemu/log.h"
@@ -95,11 +96,46 @@ struct cxl_cmd {
return CXL_MBOX_SUCCESS; \
}
-DEFINE_MAILBOX_HANDLER_ZEROED(events_get_records, 0x20);
-DEFINE_MAILBOX_HANDLER_NOP(events_clear_records);
DEFINE_MAILBOX_HANDLER_ZEROED(events_get_interrupt_policy, 4);
DEFINE_MAILBOX_HANDLER_NOP(events_set_interrupt_policy);
+static CXLRetCode cmd_events_get_records(struct cxl_cmd *cmd,
+ CXLDeviceState *cxlds,
+ uint16_t *len)
+{
+ CXLGetEventPayload *pl;
+ uint8_t log_type;
+ int max_recs;
+
+ if (cmd->in < sizeof(log_type)) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ log_type = *((uint8_t *)cmd->payload);
+
+ pl = (CXLGetEventPayload *)cmd->payload;
+ memset(pl, 0, sizeof(*pl));
+
+ max_recs = (cxlds->payload_size - CXL_EVENT_PAYLOAD_HDR_SIZE) /
+ CXL_EVENT_RECORD_SIZE;
+ if (max_recs > 0xFFFF) {
+ max_recs = 0xFFFF;
+ }
+
+ return cxl_event_get_records(cxlds, pl, log_type, max_recs, len);
+}
+
+static CXLRetCode cmd_events_clear_records(struct cxl_cmd *cmd,
+ CXLDeviceState *cxlds,
+ uint16_t *len)
+{
+ CXLClearEventPayload *pl;
+
+ pl = (CXLClearEventPayload *)cmd->payload;
+ *len = 0;
+ return cxl_event_clear_records(cxlds, pl);
+}
+
/* 8.2.9.2.1 */
static CXLRetCode cmd_firmware_update_get_info(struct cxl_cmd *cmd,
CXLDeviceState *cxl_dstate,
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index d751803188..ec5a384885 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -724,6 +724,7 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp)
goto err_release_cdat;
}
+ cxl_event_init(&ct3d->cxl_dstate);
return;
err_release_cdat:
diff --git a/hw/cxl/meson.build b/hw/cxl/meson.build
index cfa95ffd40..71059972d4 100644
--- a/hw/cxl/meson.build
+++ b/hw/cxl/meson.build
@@ -5,6 +5,7 @@ softmmu_ss.add(when: 'CONFIG_CXL',
'cxl-mailbox-utils.c',
'cxl-host.c',
'cxl-cdat.c',
+ 'cxl-events.c',
),
if_false: files(
'cxl-host-stubs.c',
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 3/7] hw/cxl/events: Wire up get/clear event mailbox commands
@ 2023-05-30 13:35 ` Jonathan Cameron via
0 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron via @ 2023-05-30 13:35 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
From: Ira Weiny <ira.weiny@intel.com>
CXL testing is benefited from an artificial event log injection
mechanism.
Add an event log infrastructure to insert, get, and clear events from
the various logs available on a device.
Replace the stubbed out CXL Get/Clear Event mailbox commands with
commands that operate on the new infrastructure.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
include/hw/cxl/cxl_device.h | 25 +++++
include/hw/cxl/cxl_events.h | 55 +++++++++
hw/cxl/cxl-events.c | 217 ++++++++++++++++++++++++++++++++++++
hw/cxl/cxl-mailbox-utils.c | 40 ++++++-
hw/mem/cxl_type3.c | 1 +
hw/cxl/meson.build | 1 +
6 files changed, 337 insertions(+), 2 deletions(-)
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index 9f8ee85f8a..d3aec1bc0e 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -111,6 +111,20 @@ typedef enum {
CXL_MBOX_MAX = 0x17
} CXLRetCode;
+typedef struct CXLEvent {
+ CXLEventRecordRaw data;
+ QSIMPLEQ_ENTRY(CXLEvent) node;
+} CXLEvent;
+
+typedef struct CXLEventLog {
+ uint16_t next_handle;
+ uint16_t overflow_err_count;
+ uint64_t first_overflow_timestamp;
+ uint64_t last_overflow_timestamp;
+ QemuMutex lock;
+ QSIMPLEQ_HEAD(, CXLEvent) events;
+} CXLEventLog;
+
typedef struct cxl_device_state {
MemoryRegion device_registers;
@@ -161,6 +175,8 @@ typedef struct cxl_device_state {
uint64_t mem_size;
uint64_t pmem_size;
uint64_t vmem_size;
+
+ CXLEventLog event_logs[CXL_EVENT_TYPE_MAX];
} CXLDeviceState;
/* Initialize the register block for a device */
@@ -353,6 +369,15 @@ MemTxResult cxl_type3_write(PCIDevice *d, hwaddr host_addr, uint64_t data,
uint64_t cxl_device_get_timestamp(CXLDeviceState *cxlds);
+void cxl_event_init(CXLDeviceState *cxlds);
+bool cxl_event_insert(CXLDeviceState *cxlds, CXLEventLogType log_type,
+ CXLEventRecordRaw *event);
+CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
+ uint8_t log_type, int max_recs,
+ uint16_t *len);
+CXLRetCode cxl_event_clear_records(CXLDeviceState *cxlds,
+ CXLClearEventPayload *pl);
+
void cxl_set_poison_list_overflowed(CXLType3Dev *ct3d);
#endif
diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h
index aeb3b0590e..d4aaa894f1 100644
--- a/include/hw/cxl/cxl_events.h
+++ b/include/hw/cxl/cxl_events.h
@@ -10,6 +10,8 @@
#ifndef CXL_EVENTS_H
#define CXL_EVENTS_H
+#include "qemu/uuid.h"
+
/*
* CXL rev 3.0 section 8.2.9.2.2; Table 8-49
*
@@ -25,4 +27,57 @@ typedef enum CXLEventLogType {
CXL_EVENT_TYPE_MAX
} CXLEventLogType;
+/*
+ * Common Event Record Format
+ * CXL rev 3.0 section 8.2.9.2.1; Table 8-42
+ */
+#define CXL_EVENT_REC_HDR_RES_LEN 0xf
+typedef struct CXLEventRecordHdr {
+ QemuUUID id;
+ uint8_t length;
+ uint8_t flags[3];
+ uint16_t handle;
+ uint16_t related_handle;
+ uint64_t timestamp;
+ uint8_t maint_op_class;
+ uint8_t reserved[CXL_EVENT_REC_HDR_RES_LEN];
+} QEMU_PACKED CXLEventRecordHdr;
+
+#define CXL_EVENT_RECORD_DATA_LENGTH 0x50
+typedef struct CXLEventRecordRaw {
+ CXLEventRecordHdr hdr;
+ uint8_t data[CXL_EVENT_RECORD_DATA_LENGTH];
+} QEMU_PACKED CXLEventRecordRaw;
+#define CXL_EVENT_RECORD_SIZE (sizeof(CXLEventRecordRaw))
+
+/*
+ * Get Event Records output payload
+ * CXL rev 3.0 section 8.2.9.2.2; Table 8-50
+ */
+#define CXL_GET_EVENT_FLAG_OVERFLOW BIT(0)
+#define CXL_GET_EVENT_FLAG_MORE_RECORDS BIT(1)
+typedef struct CXLGetEventPayload {
+ uint8_t flags;
+ uint8_t reserved1;
+ uint16_t overflow_err_count;
+ uint64_t first_overflow_timestamp;
+ uint64_t last_overflow_timestamp;
+ uint16_t record_count;
+ uint8_t reserved2[0xa];
+ CXLEventRecordRaw records[];
+} QEMU_PACKED CXLGetEventPayload;
+#define CXL_EVENT_PAYLOAD_HDR_SIZE (sizeof(CXLGetEventPayload))
+
+/*
+ * Clear Event Records input payload
+ * CXL rev 3.0 section 8.2.9.2.3; Table 8-51
+ */
+typedef struct CXLClearEventPayload {
+ uint8_t event_log; /* CXLEventLogType */
+ uint8_t clear_flags;
+ uint8_t nr_recs;
+ uint8_t reserved[3];
+ uint16_t handle[];
+} CXLClearEventPayload;
+
#endif /* CXL_EVENTS_H */
diff --git a/hw/cxl/cxl-events.c b/hw/cxl/cxl-events.c
new file mode 100644
index 0000000000..5da1b76b97
--- /dev/null
+++ b/hw/cxl/cxl-events.c
@@ -0,0 +1,217 @@
+/*
+ * CXL Event processing
+ *
+ * Copyright(C) 2023 Intel Corporation.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See the
+ * COPYING file in the top-level directory.
+ */
+
+#include <stdint.h>
+
+#include "qemu/osdep.h"
+#include "qemu/bswap.h"
+#include "qemu/typedefs.h"
+#include "qemu/error-report.h"
+#include "hw/cxl/cxl.h"
+#include "hw/cxl/cxl_events.h"
+
+/* Artificial limit on the number of events a log can hold */
+#define CXL_TEST_EVENT_OVERFLOW 8
+
+static void reset_overflow(CXLEventLog *log)
+{
+ log->overflow_err_count = 0;
+ log->first_overflow_timestamp = 0;
+ log->last_overflow_timestamp = 0;
+}
+
+void cxl_event_init(CXLDeviceState *cxlds)
+{
+ CXLEventLog *log;
+ int i;
+
+ for (i = 0; i < CXL_EVENT_TYPE_MAX; i++) {
+ log = &cxlds->event_logs[i];
+ log->next_handle = 1;
+ log->overflow_err_count = 0;
+ log->first_overflow_timestamp = 0;
+ log->last_overflow_timestamp = 0;
+ qemu_mutex_init(&log->lock);
+ QSIMPLEQ_INIT(&log->events);
+ }
+}
+
+static CXLEvent *cxl_event_get_head(CXLEventLog *log)
+{
+ return QSIMPLEQ_FIRST(&log->events);
+}
+
+static CXLEvent *cxl_event_get_next(CXLEvent *entry)
+{
+ return QSIMPLEQ_NEXT(entry, node);
+}
+
+static int cxl_event_count(CXLEventLog *log)
+{
+ CXLEvent *event;
+ int rc = 0;
+
+ QSIMPLEQ_FOREACH(event, &log->events, node) {
+ rc++;
+ }
+
+ return rc;
+}
+
+static bool cxl_event_empty(CXLEventLog *log)
+{
+ return QSIMPLEQ_EMPTY(&log->events);
+}
+
+static void cxl_event_delete_head(CXLDeviceState *cxlds,
+ CXLEventLogType log_type,
+ CXLEventLog *log)
+{
+ CXLEvent *entry = cxl_event_get_head(log);
+
+ reset_overflow(log);
+ QSIMPLEQ_REMOVE_HEAD(&log->events, node);
+ if (cxl_event_empty(log)) {
+ cxl_event_set_status(cxlds, log_type, false);
+ }
+ g_free(entry);
+}
+
+/*
+ * return true if an interrupt should be generated as a result
+ * of inserting this event.
+ */
+bool cxl_event_insert(CXLDeviceState *cxlds, CXLEventLogType log_type,
+ CXLEventRecordRaw *event)
+{
+ uint64_t time;
+ CXLEventLog *log;
+ CXLEvent *entry;
+
+ if (log_type >= CXL_EVENT_TYPE_MAX) {
+ return false;
+ }
+
+ time = cxl_device_get_timestamp(cxlds);
+
+ log = &cxlds->event_logs[log_type];
+
+ QEMU_LOCK_GUARD(&log->lock);
+
+ if (cxl_event_count(log) >= CXL_TEST_EVENT_OVERFLOW) {
+ if (log->overflow_err_count == 0) {
+ log->first_overflow_timestamp = time;
+ }
+ log->overflow_err_count++;
+ log->last_overflow_timestamp = time;
+ return false;
+ }
+
+ entry = g_new0(CXLEvent, 1);
+
+ memcpy(&entry->data, event, sizeof(*event));
+
+ entry->data.hdr.handle = cpu_to_le16(log->next_handle);
+ log->next_handle++;
+ /* 0 handle is never valid */
+ if (log->next_handle == 0) {
+ log->next_handle++;
+ }
+ entry->data.hdr.timestamp = cpu_to_le64(time);
+
+ QSIMPLEQ_INSERT_TAIL(&log->events, entry, node);
+ cxl_event_set_status(cxlds, log_type, true);
+
+ /* Count went from 0 to 1 */
+ return cxl_event_count(log) == 1;
+}
+
+CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
+ uint8_t log_type, int max_recs,
+ uint16_t *len)
+{
+ CXLEventLog *log;
+ CXLEvent *entry;
+ uint16_t nr;
+
+ if (log_type >= CXL_EVENT_TYPE_MAX) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ log = &cxlds->event_logs[log_type];
+
+ QEMU_LOCK_GUARD(&log->lock);
+
+ entry = cxl_event_get_head(log);
+ for (nr = 0; entry && nr < max_recs; nr++) {
+ memcpy(&pl->records[nr], &entry->data, CXL_EVENT_RECORD_SIZE);
+ entry = cxl_event_get_next(entry);
+ }
+
+ if (!cxl_event_empty(log)) {
+ pl->flags |= CXL_GET_EVENT_FLAG_MORE_RECORDS;
+ }
+
+ if (log->overflow_err_count) {
+ pl->flags |= CXL_GET_EVENT_FLAG_OVERFLOW;
+ pl->overflow_err_count = cpu_to_le16(log->overflow_err_count);
+ pl->first_overflow_timestamp = cpu_to_le64(log->first_overflow_timestamp);
+ pl->last_overflow_timestamp = cpu_to_le64(log->last_overflow_timestamp);
+ }
+
+ pl->record_count = cpu_to_le16(nr);
+ *len = CXL_EVENT_PAYLOAD_HDR_SIZE + (CXL_EVENT_RECORD_SIZE * nr);
+
+ return CXL_MBOX_SUCCESS;
+}
+
+CXLRetCode cxl_event_clear_records(CXLDeviceState *cxlds, CXLClearEventPayload *pl)
+{
+ CXLEventLog *log;
+ uint8_t log_type;
+ CXLEvent *entry;
+ int nr;
+
+ log_type = pl->event_log;
+
+ if (log_type >= CXL_EVENT_TYPE_MAX) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ log = &cxlds->event_logs[log_type];
+
+ QEMU_LOCK_GUARD(&log->lock);
+ /*
+ * Must itterate the queue twice.
+ * "The device shall verify the event record handles specified in the input
+ * payload are in temporal order. If the device detects an older event
+ * record that will not be cleared when Clear Event Records is executed,
+ * the device shall return the Invalid Handle return code and shall not
+ * clear any of the specified event records."
+ * -- CXL 3.0 8.2.9.2.3
+ */
+ entry = cxl_event_get_head(log);
+ for (nr = 0; entry && nr < pl->nr_recs; nr++) {
+ uint16_t handle = pl->handle[nr];
+
+ /* NOTE: Both handles are little endian. */
+ if (handle == 0 || entry->data.hdr.handle != handle) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+ entry = cxl_event_get_next(entry);
+ }
+
+ entry = cxl_event_get_head(log);
+ for (nr = 0; entry && nr < pl->nr_recs; nr++) {
+ cxl_event_delete_head(cxlds, log_type, log);
+ entry = cxl_event_get_head(log);
+ }
+
+ return CXL_MBOX_SUCCESS;
+}
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index d7e114aaae..3f46538048 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -9,6 +9,7 @@
#include "qemu/osdep.h"
#include "hw/cxl/cxl.h"
+#include "hw/cxl/cxl_events.h"
#include "hw/pci/pci.h"
#include "qemu/cutils.h"
#include "qemu/log.h"
@@ -95,11 +96,46 @@ struct cxl_cmd {
return CXL_MBOX_SUCCESS; \
}
-DEFINE_MAILBOX_HANDLER_ZEROED(events_get_records, 0x20);
-DEFINE_MAILBOX_HANDLER_NOP(events_clear_records);
DEFINE_MAILBOX_HANDLER_ZEROED(events_get_interrupt_policy, 4);
DEFINE_MAILBOX_HANDLER_NOP(events_set_interrupt_policy);
+static CXLRetCode cmd_events_get_records(struct cxl_cmd *cmd,
+ CXLDeviceState *cxlds,
+ uint16_t *len)
+{
+ CXLGetEventPayload *pl;
+ uint8_t log_type;
+ int max_recs;
+
+ if (cmd->in < sizeof(log_type)) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ log_type = *((uint8_t *)cmd->payload);
+
+ pl = (CXLGetEventPayload *)cmd->payload;
+ memset(pl, 0, sizeof(*pl));
+
+ max_recs = (cxlds->payload_size - CXL_EVENT_PAYLOAD_HDR_SIZE) /
+ CXL_EVENT_RECORD_SIZE;
+ if (max_recs > 0xFFFF) {
+ max_recs = 0xFFFF;
+ }
+
+ return cxl_event_get_records(cxlds, pl, log_type, max_recs, len);
+}
+
+static CXLRetCode cmd_events_clear_records(struct cxl_cmd *cmd,
+ CXLDeviceState *cxlds,
+ uint16_t *len)
+{
+ CXLClearEventPayload *pl;
+
+ pl = (CXLClearEventPayload *)cmd->payload;
+ *len = 0;
+ return cxl_event_clear_records(cxlds, pl);
+}
+
/* 8.2.9.2.1 */
static CXLRetCode cmd_firmware_update_get_info(struct cxl_cmd *cmd,
CXLDeviceState *cxl_dstate,
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index d751803188..ec5a384885 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -724,6 +724,7 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp)
goto err_release_cdat;
}
+ cxl_event_init(&ct3d->cxl_dstate);
return;
err_release_cdat:
diff --git a/hw/cxl/meson.build b/hw/cxl/meson.build
index cfa95ffd40..71059972d4 100644
--- a/hw/cxl/meson.build
+++ b/hw/cxl/meson.build
@@ -5,6 +5,7 @@ softmmu_ss.add(when: 'CONFIG_CXL',
'cxl-mailbox-utils.c',
'cxl-host.c',
'cxl-cdat.c',
+ 'cxl-events.c',
),
if_false: files(
'cxl-host-stubs.c',
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 4/7] hw/cxl/events: Add event interrupt support
2023-05-30 13:35 ` Jonathan Cameron via
@ 2023-05-30 13:36 ` Jonathan Cameron via
-1 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron @ 2023-05-30 13:36 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
From: Ira Weiny <ira.weiny@intel.com>
Replace the stubbed out CXL Get/Set Event interrupt policy mailbox
commands. Enable those commands to control interrupts for each of the
event log types.
Skip the standard input mailbox length on the Set command due to DCD
being optional. Perform the checks separately.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
include/hw/cxl/cxl_device.h | 6 +-
include/hw/cxl/cxl_events.h | 23 ++++++++
hw/cxl/cxl-events.c | 33 ++++++++++-
hw/cxl/cxl-mailbox-utils.c | 106 +++++++++++++++++++++++++++++-------
hw/mem/cxl_type3.c | 4 +-
5 files changed, 147 insertions(+), 25 deletions(-)
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index d3aec1bc0e..1978730fba 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -121,6 +121,8 @@ typedef struct CXLEventLog {
uint16_t overflow_err_count;
uint64_t first_overflow_timestamp;
uint64_t last_overflow_timestamp;
+ bool irq_enabled;
+ int irq_vec;
QemuMutex lock;
QSIMPLEQ_HEAD(, CXLEvent) events;
} CXLEventLog;
@@ -369,7 +371,7 @@ MemTxResult cxl_type3_write(PCIDevice *d, hwaddr host_addr, uint64_t data,
uint64_t cxl_device_get_timestamp(CXLDeviceState *cxlds);
-void cxl_event_init(CXLDeviceState *cxlds);
+void cxl_event_init(CXLDeviceState *cxlds, int start_msg_num);
bool cxl_event_insert(CXLDeviceState *cxlds, CXLEventLogType log_type,
CXLEventRecordRaw *event);
CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
@@ -378,6 +380,8 @@ CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
CXLRetCode cxl_event_clear_records(CXLDeviceState *cxlds,
CXLClearEventPayload *pl);
+void cxl_event_irq_assert(CXLType3Dev *ct3d);
+
void cxl_set_poison_list_overflowed(CXLType3Dev *ct3d);
#endif
diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h
index d4aaa894f1..4bf8b7aa08 100644
--- a/include/hw/cxl/cxl_events.h
+++ b/include/hw/cxl/cxl_events.h
@@ -80,4 +80,27 @@ typedef struct CXLClearEventPayload {
uint16_t handle[];
} CXLClearEventPayload;
+/**
+ * Event Interrupt Policy
+ *
+ * CXL rev 3.0 section 8.2.9.2.4; Table 8-52
+ */
+typedef enum CXLEventIntMode {
+ CXL_INT_NONE = 0x00,
+ CXL_INT_MSI_MSIX = 0x01,
+ CXL_INT_FW = 0x02,
+ CXL_INT_RES = 0x03,
+} CXLEventIntMode;
+#define CXL_EVENT_INT_MODE_MASK 0x3
+#define CXL_EVENT_INT_SETTING(vector) ((((uint8_t)vector & 0xf) << 4) | CXL_INT_MSI_MSIX)
+typedef struct CXLEventInterruptPolicy {
+ uint8_t info_settings;
+ uint8_t warn_settings;
+ uint8_t failure_settings;
+ uint8_t fatal_settings;
+ uint8_t dyn_cap_settings;
+} QEMU_PACKED CXLEventInterruptPolicy;
+/* DCD is optional but other fields are not */
+#define CXL_EVENT_INT_SETTING_MIN_LEN 4
+
#endif /* CXL_EVENTS_H */
diff --git a/hw/cxl/cxl-events.c b/hw/cxl/cxl-events.c
index 5da1b76b97..d161d57456 100644
--- a/hw/cxl/cxl-events.c
+++ b/hw/cxl/cxl-events.c
@@ -13,6 +13,8 @@
#include "qemu/bswap.h"
#include "qemu/typedefs.h"
#include "qemu/error-report.h"
+#include "hw/pci/msi.h"
+#include "hw/pci/msix.h"
#include "hw/cxl/cxl.h"
#include "hw/cxl/cxl_events.h"
@@ -26,7 +28,7 @@ static void reset_overflow(CXLEventLog *log)
log->last_overflow_timestamp = 0;
}
-void cxl_event_init(CXLDeviceState *cxlds)
+void cxl_event_init(CXLDeviceState *cxlds, int start_msg_num)
{
CXLEventLog *log;
int i;
@@ -37,9 +39,16 @@ void cxl_event_init(CXLDeviceState *cxlds)
log->overflow_err_count = 0;
log->first_overflow_timestamp = 0;
log->last_overflow_timestamp = 0;
+ log->irq_enabled = false;
+ log->irq_vec = start_msg_num++;
qemu_mutex_init(&log->lock);
QSIMPLEQ_INIT(&log->events);
}
+
+ /* Override -- Dynamic Capacity uses the same vector as info */
+ cxlds->event_logs[CXL_EVENT_TYPE_DYNAMIC_CAP].irq_vec =
+ cxlds->event_logs[CXL_EVENT_TYPE_INFO].irq_vec;
+
}
static CXLEvent *cxl_event_get_head(CXLEventLog *log)
@@ -215,3 +224,25 @@ CXLRetCode cxl_event_clear_records(CXLDeviceState *cxlds, CXLClearEventPayload *
return CXL_MBOX_SUCCESS;
}
+
+void cxl_event_irq_assert(CXLType3Dev *ct3d)
+{
+ CXLDeviceState *cxlds = &ct3d->cxl_dstate;
+ PCIDevice *pdev = &ct3d->parent_obj;
+ int i;
+
+ for (i = 0; i < CXL_EVENT_TYPE_MAX; i++) {
+ CXLEventLog *log = &cxlds->event_logs[i];
+
+ if (!log->irq_enabled || cxl_event_empty(log)) {
+ continue;
+ }
+
+ /* Notifies interrupt, legacy IRQ is not supported */
+ if (msix_enabled(pdev)) {
+ msix_notify(pdev, log->irq_vec);
+ } else if (msi_enabled(pdev)) {
+ msi_notify(pdev, log->irq_vec);
+ }
+ }
+}
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index 3f46538048..02f9b5a870 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -80,25 +80,6 @@ struct cxl_cmd {
uint8_t *payload;
};
-#define DEFINE_MAILBOX_HANDLER_ZEROED(name, size) \
- uint16_t __zero##name = size; \
- static CXLRetCode cmd_##name(struct cxl_cmd *cmd, \
- CXLDeviceState *cxl_dstate, uint16_t *len) \
- { \
- *len = __zero##name; \
- memset(cmd->payload, 0, *len); \
- return CXL_MBOX_SUCCESS; \
- }
-#define DEFINE_MAILBOX_HANDLER_NOP(name) \
- static CXLRetCode cmd_##name(struct cxl_cmd *cmd, \
- CXLDeviceState *cxl_dstate, uint16_t *len) \
- { \
- return CXL_MBOX_SUCCESS; \
- }
-
-DEFINE_MAILBOX_HANDLER_ZEROED(events_get_interrupt_policy, 4);
-DEFINE_MAILBOX_HANDLER_NOP(events_set_interrupt_policy);
-
static CXLRetCode cmd_events_get_records(struct cxl_cmd *cmd,
CXLDeviceState *cxlds,
uint16_t *len)
@@ -136,6 +117,88 @@ static CXLRetCode cmd_events_clear_records(struct cxl_cmd *cmd,
return cxl_event_clear_records(cxlds, pl);
}
+static CXLRetCode cmd_events_get_interrupt_policy(struct cxl_cmd *cmd,
+ CXLDeviceState *cxlds,
+ uint16_t *len)
+{
+ CXLEventInterruptPolicy *policy;
+ CXLEventLog *log;
+
+ policy = (CXLEventInterruptPolicy *)cmd->payload;
+ memset(policy, 0, sizeof(*policy));
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_INFO];
+ if (log->irq_enabled) {
+ policy->info_settings = CXL_EVENT_INT_SETTING(log->irq_vec);
+ }
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_WARN];
+ if (log->irq_enabled) {
+ policy->warn_settings = CXL_EVENT_INT_SETTING(log->irq_vec);
+ }
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_FAIL];
+ if (log->irq_enabled) {
+ policy->failure_settings = CXL_EVENT_INT_SETTING(log->irq_vec);
+ }
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_FATAL];
+ if (log->irq_enabled) {
+ policy->fatal_settings = CXL_EVENT_INT_SETTING(log->irq_vec);
+ }
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_DYNAMIC_CAP];
+ if (log->irq_enabled) {
+ /* Dynamic Capacity borrows the same vector as info */
+ policy->dyn_cap_settings = CXL_INT_MSI_MSIX;
+ }
+
+ *len = sizeof(*policy);
+ return CXL_MBOX_SUCCESS;
+}
+
+static CXLRetCode cmd_events_set_interrupt_policy(struct cxl_cmd *cmd,
+ CXLDeviceState *cxlds,
+ uint16_t *len)
+{
+ CXLEventInterruptPolicy *policy;
+ CXLEventLog *log;
+
+ if (*len < CXL_EVENT_INT_SETTING_MIN_LEN) {
+ return CXL_MBOX_INVALID_PAYLOAD_LENGTH;
+ }
+
+ policy = (CXLEventInterruptPolicy *)cmd->payload;
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_INFO];
+ log->irq_enabled = (policy->info_settings & CXL_EVENT_INT_MODE_MASK) ==
+ CXL_INT_MSI_MSIX;
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_WARN];
+ log->irq_enabled = (policy->warn_settings & CXL_EVENT_INT_MODE_MASK) ==
+ CXL_INT_MSI_MSIX;
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_FAIL];
+ log->irq_enabled = (policy->failure_settings & CXL_EVENT_INT_MODE_MASK) ==
+ CXL_INT_MSI_MSIX;
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_FATAL];
+ log->irq_enabled = (policy->fatal_settings & CXL_EVENT_INT_MODE_MASK) ==
+ CXL_INT_MSI_MSIX;
+
+ /* DCD is optional */
+ if (*len < sizeof(*policy)) {
+ return CXL_MBOX_SUCCESS;
+ }
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_DYNAMIC_CAP];
+ log->irq_enabled = (policy->dyn_cap_settings & CXL_EVENT_INT_MODE_MASK) ==
+ CXL_INT_MSI_MSIX;
+
+ *len = sizeof(*policy);
+ return CXL_MBOX_SUCCESS;
+}
+
/* 8.2.9.2.1 */
static CXLRetCode cmd_firmware_update_get_info(struct cxl_cmd *cmd,
CXLDeviceState *cxl_dstate,
@@ -611,9 +674,10 @@ static struct cxl_cmd cxl_cmd_set[256][256] = {
[EVENTS][CLEAR_RECORDS] = { "EVENTS_CLEAR_RECORDS",
cmd_events_clear_records, ~0, IMMEDIATE_LOG_CHANGE },
[EVENTS][GET_INTERRUPT_POLICY] = { "EVENTS_GET_INTERRUPT_POLICY",
- cmd_events_get_interrupt_policy, 0, 0 },
+ cmd_events_get_interrupt_policy, 0, 0 },
[EVENTS][SET_INTERRUPT_POLICY] = { "EVENTS_SET_INTERRUPT_POLICY",
- cmd_events_set_interrupt_policy, 4, IMMEDIATE_CONFIG_CHANGE },
+ cmd_events_set_interrupt_policy,
+ ~0, IMMEDIATE_CONFIG_CHANGE },
[FIRMWARE_UPDATE][GET_INFO] = { "FIRMWARE_UPDATE_GET_INFO",
cmd_firmware_update_get_info, 0, 0 },
[TIMESTAMP][GET] = { "TIMESTAMP_GET", cmd_timestamp_get, 0, 0 },
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index ec5a384885..c9e347f42b 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -659,7 +659,7 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp)
ComponentRegisters *regs = &cxl_cstate->crb;
MemoryRegion *mr = ®s->component_registers;
uint8_t *pci_conf = pci_dev->config;
- unsigned short msix_num = 1;
+ unsigned short msix_num = 6;
int i, rc;
QTAILQ_INIT(&ct3d->error_list);
@@ -723,8 +723,8 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp)
if (rc) {
goto err_release_cdat;
}
+ cxl_event_init(&ct3d->cxl_dstate, 2);
- cxl_event_init(&ct3d->cxl_dstate);
return;
err_release_cdat:
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 4/7] hw/cxl/events: Add event interrupt support
@ 2023-05-30 13:36 ` Jonathan Cameron via
0 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron via @ 2023-05-30 13:36 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
From: Ira Weiny <ira.weiny@intel.com>
Replace the stubbed out CXL Get/Set Event interrupt policy mailbox
commands. Enable those commands to control interrupts for each of the
event log types.
Skip the standard input mailbox length on the Set command due to DCD
being optional. Perform the checks separately.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
include/hw/cxl/cxl_device.h | 6 +-
include/hw/cxl/cxl_events.h | 23 ++++++++
hw/cxl/cxl-events.c | 33 ++++++++++-
hw/cxl/cxl-mailbox-utils.c | 106 +++++++++++++++++++++++++++++-------
hw/mem/cxl_type3.c | 4 +-
5 files changed, 147 insertions(+), 25 deletions(-)
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index d3aec1bc0e..1978730fba 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -121,6 +121,8 @@ typedef struct CXLEventLog {
uint16_t overflow_err_count;
uint64_t first_overflow_timestamp;
uint64_t last_overflow_timestamp;
+ bool irq_enabled;
+ int irq_vec;
QemuMutex lock;
QSIMPLEQ_HEAD(, CXLEvent) events;
} CXLEventLog;
@@ -369,7 +371,7 @@ MemTxResult cxl_type3_write(PCIDevice *d, hwaddr host_addr, uint64_t data,
uint64_t cxl_device_get_timestamp(CXLDeviceState *cxlds);
-void cxl_event_init(CXLDeviceState *cxlds);
+void cxl_event_init(CXLDeviceState *cxlds, int start_msg_num);
bool cxl_event_insert(CXLDeviceState *cxlds, CXLEventLogType log_type,
CXLEventRecordRaw *event);
CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
@@ -378,6 +380,8 @@ CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
CXLRetCode cxl_event_clear_records(CXLDeviceState *cxlds,
CXLClearEventPayload *pl);
+void cxl_event_irq_assert(CXLType3Dev *ct3d);
+
void cxl_set_poison_list_overflowed(CXLType3Dev *ct3d);
#endif
diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h
index d4aaa894f1..4bf8b7aa08 100644
--- a/include/hw/cxl/cxl_events.h
+++ b/include/hw/cxl/cxl_events.h
@@ -80,4 +80,27 @@ typedef struct CXLClearEventPayload {
uint16_t handle[];
} CXLClearEventPayload;
+/**
+ * Event Interrupt Policy
+ *
+ * CXL rev 3.0 section 8.2.9.2.4; Table 8-52
+ */
+typedef enum CXLEventIntMode {
+ CXL_INT_NONE = 0x00,
+ CXL_INT_MSI_MSIX = 0x01,
+ CXL_INT_FW = 0x02,
+ CXL_INT_RES = 0x03,
+} CXLEventIntMode;
+#define CXL_EVENT_INT_MODE_MASK 0x3
+#define CXL_EVENT_INT_SETTING(vector) ((((uint8_t)vector & 0xf) << 4) | CXL_INT_MSI_MSIX)
+typedef struct CXLEventInterruptPolicy {
+ uint8_t info_settings;
+ uint8_t warn_settings;
+ uint8_t failure_settings;
+ uint8_t fatal_settings;
+ uint8_t dyn_cap_settings;
+} QEMU_PACKED CXLEventInterruptPolicy;
+/* DCD is optional but other fields are not */
+#define CXL_EVENT_INT_SETTING_MIN_LEN 4
+
#endif /* CXL_EVENTS_H */
diff --git a/hw/cxl/cxl-events.c b/hw/cxl/cxl-events.c
index 5da1b76b97..d161d57456 100644
--- a/hw/cxl/cxl-events.c
+++ b/hw/cxl/cxl-events.c
@@ -13,6 +13,8 @@
#include "qemu/bswap.h"
#include "qemu/typedefs.h"
#include "qemu/error-report.h"
+#include "hw/pci/msi.h"
+#include "hw/pci/msix.h"
#include "hw/cxl/cxl.h"
#include "hw/cxl/cxl_events.h"
@@ -26,7 +28,7 @@ static void reset_overflow(CXLEventLog *log)
log->last_overflow_timestamp = 0;
}
-void cxl_event_init(CXLDeviceState *cxlds)
+void cxl_event_init(CXLDeviceState *cxlds, int start_msg_num)
{
CXLEventLog *log;
int i;
@@ -37,9 +39,16 @@ void cxl_event_init(CXLDeviceState *cxlds)
log->overflow_err_count = 0;
log->first_overflow_timestamp = 0;
log->last_overflow_timestamp = 0;
+ log->irq_enabled = false;
+ log->irq_vec = start_msg_num++;
qemu_mutex_init(&log->lock);
QSIMPLEQ_INIT(&log->events);
}
+
+ /* Override -- Dynamic Capacity uses the same vector as info */
+ cxlds->event_logs[CXL_EVENT_TYPE_DYNAMIC_CAP].irq_vec =
+ cxlds->event_logs[CXL_EVENT_TYPE_INFO].irq_vec;
+
}
static CXLEvent *cxl_event_get_head(CXLEventLog *log)
@@ -215,3 +224,25 @@ CXLRetCode cxl_event_clear_records(CXLDeviceState *cxlds, CXLClearEventPayload *
return CXL_MBOX_SUCCESS;
}
+
+void cxl_event_irq_assert(CXLType3Dev *ct3d)
+{
+ CXLDeviceState *cxlds = &ct3d->cxl_dstate;
+ PCIDevice *pdev = &ct3d->parent_obj;
+ int i;
+
+ for (i = 0; i < CXL_EVENT_TYPE_MAX; i++) {
+ CXLEventLog *log = &cxlds->event_logs[i];
+
+ if (!log->irq_enabled || cxl_event_empty(log)) {
+ continue;
+ }
+
+ /* Notifies interrupt, legacy IRQ is not supported */
+ if (msix_enabled(pdev)) {
+ msix_notify(pdev, log->irq_vec);
+ } else if (msi_enabled(pdev)) {
+ msi_notify(pdev, log->irq_vec);
+ }
+ }
+}
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index 3f46538048..02f9b5a870 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -80,25 +80,6 @@ struct cxl_cmd {
uint8_t *payload;
};
-#define DEFINE_MAILBOX_HANDLER_ZEROED(name, size) \
- uint16_t __zero##name = size; \
- static CXLRetCode cmd_##name(struct cxl_cmd *cmd, \
- CXLDeviceState *cxl_dstate, uint16_t *len) \
- { \
- *len = __zero##name; \
- memset(cmd->payload, 0, *len); \
- return CXL_MBOX_SUCCESS; \
- }
-#define DEFINE_MAILBOX_HANDLER_NOP(name) \
- static CXLRetCode cmd_##name(struct cxl_cmd *cmd, \
- CXLDeviceState *cxl_dstate, uint16_t *len) \
- { \
- return CXL_MBOX_SUCCESS; \
- }
-
-DEFINE_MAILBOX_HANDLER_ZEROED(events_get_interrupt_policy, 4);
-DEFINE_MAILBOX_HANDLER_NOP(events_set_interrupt_policy);
-
static CXLRetCode cmd_events_get_records(struct cxl_cmd *cmd,
CXLDeviceState *cxlds,
uint16_t *len)
@@ -136,6 +117,88 @@ static CXLRetCode cmd_events_clear_records(struct cxl_cmd *cmd,
return cxl_event_clear_records(cxlds, pl);
}
+static CXLRetCode cmd_events_get_interrupt_policy(struct cxl_cmd *cmd,
+ CXLDeviceState *cxlds,
+ uint16_t *len)
+{
+ CXLEventInterruptPolicy *policy;
+ CXLEventLog *log;
+
+ policy = (CXLEventInterruptPolicy *)cmd->payload;
+ memset(policy, 0, sizeof(*policy));
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_INFO];
+ if (log->irq_enabled) {
+ policy->info_settings = CXL_EVENT_INT_SETTING(log->irq_vec);
+ }
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_WARN];
+ if (log->irq_enabled) {
+ policy->warn_settings = CXL_EVENT_INT_SETTING(log->irq_vec);
+ }
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_FAIL];
+ if (log->irq_enabled) {
+ policy->failure_settings = CXL_EVENT_INT_SETTING(log->irq_vec);
+ }
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_FATAL];
+ if (log->irq_enabled) {
+ policy->fatal_settings = CXL_EVENT_INT_SETTING(log->irq_vec);
+ }
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_DYNAMIC_CAP];
+ if (log->irq_enabled) {
+ /* Dynamic Capacity borrows the same vector as info */
+ policy->dyn_cap_settings = CXL_INT_MSI_MSIX;
+ }
+
+ *len = sizeof(*policy);
+ return CXL_MBOX_SUCCESS;
+}
+
+static CXLRetCode cmd_events_set_interrupt_policy(struct cxl_cmd *cmd,
+ CXLDeviceState *cxlds,
+ uint16_t *len)
+{
+ CXLEventInterruptPolicy *policy;
+ CXLEventLog *log;
+
+ if (*len < CXL_EVENT_INT_SETTING_MIN_LEN) {
+ return CXL_MBOX_INVALID_PAYLOAD_LENGTH;
+ }
+
+ policy = (CXLEventInterruptPolicy *)cmd->payload;
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_INFO];
+ log->irq_enabled = (policy->info_settings & CXL_EVENT_INT_MODE_MASK) ==
+ CXL_INT_MSI_MSIX;
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_WARN];
+ log->irq_enabled = (policy->warn_settings & CXL_EVENT_INT_MODE_MASK) ==
+ CXL_INT_MSI_MSIX;
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_FAIL];
+ log->irq_enabled = (policy->failure_settings & CXL_EVENT_INT_MODE_MASK) ==
+ CXL_INT_MSI_MSIX;
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_FATAL];
+ log->irq_enabled = (policy->fatal_settings & CXL_EVENT_INT_MODE_MASK) ==
+ CXL_INT_MSI_MSIX;
+
+ /* DCD is optional */
+ if (*len < sizeof(*policy)) {
+ return CXL_MBOX_SUCCESS;
+ }
+
+ log = &cxlds->event_logs[CXL_EVENT_TYPE_DYNAMIC_CAP];
+ log->irq_enabled = (policy->dyn_cap_settings & CXL_EVENT_INT_MODE_MASK) ==
+ CXL_INT_MSI_MSIX;
+
+ *len = sizeof(*policy);
+ return CXL_MBOX_SUCCESS;
+}
+
/* 8.2.9.2.1 */
static CXLRetCode cmd_firmware_update_get_info(struct cxl_cmd *cmd,
CXLDeviceState *cxl_dstate,
@@ -611,9 +674,10 @@ static struct cxl_cmd cxl_cmd_set[256][256] = {
[EVENTS][CLEAR_RECORDS] = { "EVENTS_CLEAR_RECORDS",
cmd_events_clear_records, ~0, IMMEDIATE_LOG_CHANGE },
[EVENTS][GET_INTERRUPT_POLICY] = { "EVENTS_GET_INTERRUPT_POLICY",
- cmd_events_get_interrupt_policy, 0, 0 },
+ cmd_events_get_interrupt_policy, 0, 0 },
[EVENTS][SET_INTERRUPT_POLICY] = { "EVENTS_SET_INTERRUPT_POLICY",
- cmd_events_set_interrupt_policy, 4, IMMEDIATE_CONFIG_CHANGE },
+ cmd_events_set_interrupt_policy,
+ ~0, IMMEDIATE_CONFIG_CHANGE },
[FIRMWARE_UPDATE][GET_INFO] = { "FIRMWARE_UPDATE_GET_INFO",
cmd_firmware_update_get_info, 0, 0 },
[TIMESTAMP][GET] = { "TIMESTAMP_GET", cmd_timestamp_get, 0, 0 },
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index ec5a384885..c9e347f42b 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -659,7 +659,7 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp)
ComponentRegisters *regs = &cxl_cstate->crb;
MemoryRegion *mr = ®s->component_registers;
uint8_t *pci_conf = pci_dev->config;
- unsigned short msix_num = 1;
+ unsigned short msix_num = 6;
int i, rc;
QTAILQ_INIT(&ct3d->error_list);
@@ -723,8 +723,8 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp)
if (rc) {
goto err_release_cdat;
}
+ cxl_event_init(&ct3d->cxl_dstate, 2);
- cxl_event_init(&ct3d->cxl_dstate);
return;
err_release_cdat:
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 5/7] hw/cxl/events: Add injection of General Media Events
2023-05-30 13:35 ` Jonathan Cameron via
@ 2023-05-30 13:36 ` Jonathan Cameron via
-1 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron @ 2023-05-30 13:36 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
From: Ira Weiny <ira.weiny@intel.com>
To facilitate testing provide a QMP command to inject a general media
event. The event can be added to the log specified.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
v9: Double space after . for consistency.
---
qapi/cxl.json | 74 ++++++++++++++++++++++++
include/hw/cxl/cxl_events.h | 20 +++++++
hw/mem/cxl_type3.c | 111 ++++++++++++++++++++++++++++++++++++
hw/mem/cxl_type3_stubs.c | 10 ++++
4 files changed, 215 insertions(+)
diff --git a/qapi/cxl.json b/qapi/cxl.json
index ed1c7eea3a..d509430844 100644
--- a/qapi/cxl.json
+++ b/qapi/cxl.json
@@ -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:
#
diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h
index 4bf8b7aa08..b189193f4c 100644
--- a/include/hw/cxl/cxl_events.h
+++ b/include/hw/cxl/cxl_events.h
@@ -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 */
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index c9e347f42b..b1618779d2 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -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);
diff --git a/hw/mem/cxl_type3_stubs.c b/hw/mem/cxl_type3_stubs.c
index fd1166a610..4dfbdf9268 100644
--- a/hw/mem/cxl_type3_stubs.c
+++ b/hw/mem/cxl_type3_stubs.c
@@ -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)
{
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 5/7] hw/cxl/events: Add injection of General Media Events
@ 2023-05-30 13:36 ` Jonathan Cameron via
0 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron via @ 2023-05-30 13:36 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
From: Ira Weiny <ira.weiny@intel.com>
To facilitate testing provide a QMP command to inject a general media
event. The event can be added to the log specified.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
v9: Double space after . for consistency.
---
qapi/cxl.json | 74 ++++++++++++++++++++++++
include/hw/cxl/cxl_events.h | 20 +++++++
hw/mem/cxl_type3.c | 111 ++++++++++++++++++++++++++++++++++++
hw/mem/cxl_type3_stubs.c | 10 ++++
4 files changed, 215 insertions(+)
diff --git a/qapi/cxl.json b/qapi/cxl.json
index ed1c7eea3a..d509430844 100644
--- a/qapi/cxl.json
+++ b/qapi/cxl.json
@@ -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:
#
diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h
index 4bf8b7aa08..b189193f4c 100644
--- a/include/hw/cxl/cxl_events.h
+++ b/include/hw/cxl/cxl_events.h
@@ -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 */
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index c9e347f42b..b1618779d2 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -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);
diff --git a/hw/mem/cxl_type3_stubs.c b/hw/mem/cxl_type3_stubs.c
index fd1166a610..4dfbdf9268 100644
--- a/hw/mem/cxl_type3_stubs.c
+++ b/hw/mem/cxl_type3_stubs.c
@@ -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)
{
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 6/7] hw/cxl/events: Add injection of DRAM events
2023-05-30 13:35 ` Jonathan Cameron via
@ 2023-05-30 13:36 ` Jonathan Cameron via
-1 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron @ 2023-05-30 13:36 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
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 <armbru@redhat.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.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)
{
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 6/7] hw/cxl/events: Add injection of DRAM events
@ 2023-05-30 13:36 ` Jonathan Cameron via
0 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron via @ 2023-05-30 13:36 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
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 <armbru@redhat.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.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)
{
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 7/7] hw/cxl/events: Add injection of Memory Module Events
2023-05-30 13:35 ` Jonathan Cameron via
@ 2023-05-30 13:36 ` Jonathan Cameron via
-1 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron @ 2023-05-30 13:36 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
These events include a copy of the device health information at the
time of the event. Actually using the emulated device health would
require a lot of controls to manipulate that state. Given the aim
of this injection code is to just test the flows when events occur,
inject the contents of the device health state as well.
Future work may add more sophisticate device health emulation
including direct generation of these records when events occur
(such as a temperature threshold being crossed). That does not
reduce the usefulness of this more basic generation of the events.
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
v9:
- Double space after . for consistency.
- Missing 'of'
---
qapi/cxl.json | 53 +++++++++++++++++++++++++++++++
include/hw/cxl/cxl_events.h | 19 ++++++++++++
hw/mem/cxl_type3.c | 62 +++++++++++++++++++++++++++++++++++++
hw/mem/cxl_type3_stubs.c | 12 +++++++
4 files changed, 146 insertions(+)
diff --git a/qapi/cxl.json b/qapi/cxl.json
index 2ad310387c..d5b5293eb5 100644
--- a/qapi/cxl.json
+++ b/qapi/cxl.json
@@ -140,6 +140,59 @@
'*column': 'uint16', '*correction-mask': [ 'uint64' ]
}}
+##
+# @cxl-inject-memory-module-event:
+#
+# Inject an event record for a Memory Module Event (CXL r3.0
+# 8.2.9.2.1.3). This event includes a copy of the Device Health
+# info at the time of the event.
+#
+# @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.
+#
+# @type: Device Event Type. See CXL r3.0 Table 8-45 Memory Module
+# Event Record for bit definitions for bit definiions.
+#
+# @health-status: Overall health summary bitmap. See CXL r3.0 Table
+# 8-100 Get Health Info Output Payload, Health Status for bit
+# definitions.
+#
+# @media-status: Overall media health summary. See CXL r3.0 Table
+# 8-100 Get Health Info Output Payload, Media Status for bit
+# definitions.
+#
+# @additional-status: See CXL r3.0 Table 8-100 Get Health Info Output
+# Payload, Additional Status for subfield definitions.
+#
+# @life-used: Percentage (0-100) of factory expected life span.
+#
+# @temperature: Device temperature in degrees Celsius.
+#
+# @dirty-shutdown-count: Number of times the device has been unable
+# to determine whether data loss may have occurred.
+#
+# @corrected-volatile-error-count: Total number of correctable errors
+# in volatile memory.
+#
+# @corrected-persistent-error-count: Total number of correctable
+# errors in persistent memory
+#
+# Since: 8.1
+##
+{ 'command': 'cxl-inject-memory-module-event',
+ 'data': { 'path': 'str', 'log': 'CxlEventLog', 'flags' : 'uint8',
+ 'type': 'uint8', 'health-status': 'uint8',
+ 'media-status': 'uint8', 'additional-status': 'uint8',
+ 'life-used': 'uint8', 'temperature' : 'int16',
+ 'dirty-shutdown-count': 'uint32',
+ 'corrected-volatile-error-count': 'uint32',
+ 'corrected-persistent-error-count': 'uint32'
+ }}
+
##
# @cxl-inject-poison:
#
diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h
index a39e30d973..089ba2091f 100644
--- a/include/hw/cxl/cxl_events.h
+++ b/include/hw/cxl/cxl_events.h
@@ -146,4 +146,23 @@ typedef struct CXLEventDram {
uint8_t reserved[0x17];
} QEMU_PACKED CXLEventDram;
+/*
+ * Memory Module Event Record
+ * CXL Rev 3.0 Section 8.2.9.2.1.3: Table 8-45
+ * All fields little endian.
+ */
+typedef struct CXLEventMemoryModule {
+ CXLEventRecordHdr hdr;
+ uint8_t type;
+ uint8_t health_status;
+ uint8_t media_status;
+ uint8_t additional_status;
+ uint8_t life_used;
+ int16_t temperature;
+ uint32_t dirty_shutdown_count;
+ uint32_t corrected_volatile_error_count;
+ uint32_t corrected_persistent_error_count;
+ uint8_t reserved[0x3d];
+} QEMU_PACKED CXLEventMemoryModule;
+
#endif /* CXL_EVENTS_H */
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index 3c07b1b7a3..4e314748d3 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -1201,6 +1201,11 @@ static const QemuUUID dram_uuid = {
0x4e, 0x9b, 0xfb, 0x5c, 0x96, 0x24),
};
+static const QemuUUID memory_module_uuid = {
+ .data = UUID(0xfe927475, 0xdd59, 0x4339, 0xa5, 0x86,
+ 0x79, 0xba, 0xb1, 0x13, 0xb7, 0x74),
+};
+
#define CXL_GMER_VALID_CHANNEL BIT(0)
#define CXL_GMER_VALID_RANK BIT(1)
#define CXL_GMER_VALID_DEVICE BIT(2)
@@ -1408,6 +1413,63 @@ void qmp_cxl_inject_dram_event(const char *path, CxlEventLog log, uint8_t flags,
return;
}
+void qmp_cxl_inject_memory_module_event(const char *path, CxlEventLog log,
+ uint8_t flags, uint8_t type,
+ uint8_t health_status,
+ uint8_t media_status,
+ uint8_t additional_status,
+ uint8_t life_used,
+ int16_t temperature,
+ uint32_t dirty_shutdown_count,
+ uint32_t corrected_volatile_error_count,
+ uint32_t corrected_persistent_error_count,
+ Error **errp)
+{
+ Object *obj = object_resolve_path(path, NULL);
+ CXLEventMemoryModule module;
+ CXLEventRecordHdr *hdr = &module.hdr;
+ CXLDeviceState *cxlds;
+ CXLType3Dev *ct3d;
+ 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(&module, 0, sizeof(module));
+ cxl_assign_event_header(hdr, &memory_module_uuid, flags, sizeof(module),
+ cxl_device_get_timestamp(&ct3d->cxl_dstate));
+
+ module.type = type;
+ module.health_status = health_status;
+ module.media_status = media_status;
+ module.additional_status = additional_status;
+ module.life_used = life_used;
+ stw_le_p(&module.temperature, temperature);
+ stl_le_p(&module.dirty_shutdown_count, dirty_shutdown_count);
+ stl_le_p(&module.corrected_volatile_error_count, corrected_volatile_error_count);
+ stl_le_p(&module.corrected_persistent_error_count, corrected_persistent_error_count);
+
+ if (cxl_event_insert(cxlds, enc_log, (CXLEventRecordRaw *)&module)) {
+ cxl_event_irq_assert(ct3d);
+ }
+}
+
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 e904c5d089..f3e4a9fa72 100644
--- a/hw/mem/cxl_type3_stubs.c
+++ b/hw/mem/cxl_type3_stubs.c
@@ -26,6 +26,18 @@ void qmp_cxl_inject_dram_event(const char *path, CxlEventLog log, uint8_t flags,
bool has_correction_mask, uint64List *correction_mask,
Error **errp) {}
+void qmp_cxl_inject_memory_module_event(const char *path, CxlEventLog log,
+ uint8_t flags, uint8_t type,
+ uint8_t health_status,
+ uint8_t media_status,
+ uint8_t additional_status,
+ uint8_t life_used,
+ int16_t temperature,
+ uint32_t dirty_shutdown_count,
+ uint32_t corrected_volatile_error_count,
+ uint32_t corrected_persistent_error_count,
+ Error **errp) {}
+
void qmp_cxl_inject_poison(const char *path, uint64_t start, uint64_t length,
Error **errp)
{
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH v9 7/7] hw/cxl/events: Add injection of Memory Module Events
@ 2023-05-30 13:36 ` Jonathan Cameron via
0 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron via @ 2023-05-30 13:36 UTC (permalink / raw)
To: qemu-devel, Michael Tsirkin, Fan Ni
Cc: linux-cxl, linuxarm, Ira Weiny, Michael Roth,
Philippe Mathieu-Daudé,
Dave Jiang, Markus Armbruster, Daniel P . Berrangé,
Eric Blake, Mike Maslenkin, Marc-André Lureau, Thomas Huth
These events include a copy of the device health information at the
time of the event. Actually using the emulated device health would
require a lot of controls to manipulate that state. Given the aim
of this injection code is to just test the flows when events occur,
inject the contents of the device health state as well.
Future work may add more sophisticate device health emulation
including direct generation of these records when events occur
(such as a temperature threshold being crossed). That does not
reduce the usefulness of this more basic generation of the events.
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
v9:
- Double space after . for consistency.
- Missing 'of'
---
qapi/cxl.json | 53 +++++++++++++++++++++++++++++++
include/hw/cxl/cxl_events.h | 19 ++++++++++++
hw/mem/cxl_type3.c | 62 +++++++++++++++++++++++++++++++++++++
hw/mem/cxl_type3_stubs.c | 12 +++++++
4 files changed, 146 insertions(+)
diff --git a/qapi/cxl.json b/qapi/cxl.json
index 2ad310387c..d5b5293eb5 100644
--- a/qapi/cxl.json
+++ b/qapi/cxl.json
@@ -140,6 +140,59 @@
'*column': 'uint16', '*correction-mask': [ 'uint64' ]
}}
+##
+# @cxl-inject-memory-module-event:
+#
+# Inject an event record for a Memory Module Event (CXL r3.0
+# 8.2.9.2.1.3). This event includes a copy of the Device Health
+# info at the time of the event.
+#
+# @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.
+#
+# @type: Device Event Type. See CXL r3.0 Table 8-45 Memory Module
+# Event Record for bit definitions for bit definiions.
+#
+# @health-status: Overall health summary bitmap. See CXL r3.0 Table
+# 8-100 Get Health Info Output Payload, Health Status for bit
+# definitions.
+#
+# @media-status: Overall media health summary. See CXL r3.0 Table
+# 8-100 Get Health Info Output Payload, Media Status for bit
+# definitions.
+#
+# @additional-status: See CXL r3.0 Table 8-100 Get Health Info Output
+# Payload, Additional Status for subfield definitions.
+#
+# @life-used: Percentage (0-100) of factory expected life span.
+#
+# @temperature: Device temperature in degrees Celsius.
+#
+# @dirty-shutdown-count: Number of times the device has been unable
+# to determine whether data loss may have occurred.
+#
+# @corrected-volatile-error-count: Total number of correctable errors
+# in volatile memory.
+#
+# @corrected-persistent-error-count: Total number of correctable
+# errors in persistent memory
+#
+# Since: 8.1
+##
+{ 'command': 'cxl-inject-memory-module-event',
+ 'data': { 'path': 'str', 'log': 'CxlEventLog', 'flags' : 'uint8',
+ 'type': 'uint8', 'health-status': 'uint8',
+ 'media-status': 'uint8', 'additional-status': 'uint8',
+ 'life-used': 'uint8', 'temperature' : 'int16',
+ 'dirty-shutdown-count': 'uint32',
+ 'corrected-volatile-error-count': 'uint32',
+ 'corrected-persistent-error-count': 'uint32'
+ }}
+
##
# @cxl-inject-poison:
#
diff --git a/include/hw/cxl/cxl_events.h b/include/hw/cxl/cxl_events.h
index a39e30d973..089ba2091f 100644
--- a/include/hw/cxl/cxl_events.h
+++ b/include/hw/cxl/cxl_events.h
@@ -146,4 +146,23 @@ typedef struct CXLEventDram {
uint8_t reserved[0x17];
} QEMU_PACKED CXLEventDram;
+/*
+ * Memory Module Event Record
+ * CXL Rev 3.0 Section 8.2.9.2.1.3: Table 8-45
+ * All fields little endian.
+ */
+typedef struct CXLEventMemoryModule {
+ CXLEventRecordHdr hdr;
+ uint8_t type;
+ uint8_t health_status;
+ uint8_t media_status;
+ uint8_t additional_status;
+ uint8_t life_used;
+ int16_t temperature;
+ uint32_t dirty_shutdown_count;
+ uint32_t corrected_volatile_error_count;
+ uint32_t corrected_persistent_error_count;
+ uint8_t reserved[0x3d];
+} QEMU_PACKED CXLEventMemoryModule;
+
#endif /* CXL_EVENTS_H */
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index 3c07b1b7a3..4e314748d3 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -1201,6 +1201,11 @@ static const QemuUUID dram_uuid = {
0x4e, 0x9b, 0xfb, 0x5c, 0x96, 0x24),
};
+static const QemuUUID memory_module_uuid = {
+ .data = UUID(0xfe927475, 0xdd59, 0x4339, 0xa5, 0x86,
+ 0x79, 0xba, 0xb1, 0x13, 0xb7, 0x74),
+};
+
#define CXL_GMER_VALID_CHANNEL BIT(0)
#define CXL_GMER_VALID_RANK BIT(1)
#define CXL_GMER_VALID_DEVICE BIT(2)
@@ -1408,6 +1413,63 @@ void qmp_cxl_inject_dram_event(const char *path, CxlEventLog log, uint8_t flags,
return;
}
+void qmp_cxl_inject_memory_module_event(const char *path, CxlEventLog log,
+ uint8_t flags, uint8_t type,
+ uint8_t health_status,
+ uint8_t media_status,
+ uint8_t additional_status,
+ uint8_t life_used,
+ int16_t temperature,
+ uint32_t dirty_shutdown_count,
+ uint32_t corrected_volatile_error_count,
+ uint32_t corrected_persistent_error_count,
+ Error **errp)
+{
+ Object *obj = object_resolve_path(path, NULL);
+ CXLEventMemoryModule module;
+ CXLEventRecordHdr *hdr = &module.hdr;
+ CXLDeviceState *cxlds;
+ CXLType3Dev *ct3d;
+ 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(&module, 0, sizeof(module));
+ cxl_assign_event_header(hdr, &memory_module_uuid, flags, sizeof(module),
+ cxl_device_get_timestamp(&ct3d->cxl_dstate));
+
+ module.type = type;
+ module.health_status = health_status;
+ module.media_status = media_status;
+ module.additional_status = additional_status;
+ module.life_used = life_used;
+ stw_le_p(&module.temperature, temperature);
+ stl_le_p(&module.dirty_shutdown_count, dirty_shutdown_count);
+ stl_le_p(&module.corrected_volatile_error_count, corrected_volatile_error_count);
+ stl_le_p(&module.corrected_persistent_error_count, corrected_persistent_error_count);
+
+ if (cxl_event_insert(cxlds, enc_log, (CXLEventRecordRaw *)&module)) {
+ cxl_event_irq_assert(ct3d);
+ }
+}
+
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 e904c5d089..f3e4a9fa72 100644
--- a/hw/mem/cxl_type3_stubs.c
+++ b/hw/mem/cxl_type3_stubs.c
@@ -26,6 +26,18 @@ void qmp_cxl_inject_dram_event(const char *path, CxlEventLog log, uint8_t flags,
bool has_correction_mask, uint64List *correction_mask,
Error **errp) {}
+void qmp_cxl_inject_memory_module_event(const char *path, CxlEventLog log,
+ uint8_t flags, uint8_t type,
+ uint8_t health_status,
+ uint8_t media_status,
+ uint8_t additional_status,
+ uint8_t life_used,
+ int16_t temperature,
+ uint32_t dirty_shutdown_count,
+ uint32_t corrected_volatile_error_count,
+ uint32_t corrected_persistent_error_count,
+ Error **errp) {}
+
void qmp_cxl_inject_poison(const char *path, uint64_t start, uint64_t length,
Error **errp)
{
--
2.39.2
^ permalink raw reply related [flat|nested] 19+ messages in thread
* Re: [PATCH v9 0/7] QEMU CXL Provide mock CXL events and irq support
2023-05-30 13:35 ` Jonathan Cameron via
` (7 preceding siblings ...)
(?)
@ 2024-03-15 1:52 ` Yuquan Wang
2024-03-15 10:24 ` Jonathan Cameron via
-1 siblings, 1 reply; 19+ messages in thread
From: Yuquan Wang @ 2024-03-15 1:52 UTC (permalink / raw)
To: jonathan.cameron
Cc: dave.jiang, fan.ni, ira.weiny, linux-cxl, linuxarm, qemu-devel
Hello, Jonathan
When during the test of qmps of CXL events like "cxl-inject-general-media-event",
I am confuesd about the argument "flags". According to "qapi/cxl.json" in qemu,
this argument represents "Event Record Flags" in Common Event Record Format.
However, it seems like the specific 'Event Record Severity' in this field can be
different from the value of 'Event Status' in "Event Status Register".
For instance (take an injection example in the coverlatter):
{ "execute": "cxl-inject-general-media-event",
"arguments": {
"path": "/machine/peripheral/cxl-mem0",
"log": "informational",
"flags": 1,
"dpa": 1000,
"descriptor": 3,
"type": 3,
"transaction-type": 192,
"channel": 3,
"device": 5,
"component-id": "iras mem"
}}
In my understanding, the 'Event Status' is informational and the
'Event Record Severity' is Warning event, which means these two arguments are
independent of each other. Is my understanding correct?
Many thanks
Yuquan
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH v9 0/7] QEMU CXL Provide mock CXL events and irq support
2024-03-15 1:52 ` [PATCH v9 0/7] QEMU CXL Provide mock CXL events and irq support Yuquan Wang
@ 2024-03-15 10:24 ` Jonathan Cameron via
0 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron @ 2024-03-15 10:24 UTC (permalink / raw)
To: Yuquan Wang
Cc: dave.jiang, fan.ni, ira.weiny, linux-cxl, linuxarm, qemu-devel
On Fri, 15 Mar 2024 09:52:28 +0800
Yuquan Wang <wangyuquan1236@phytium.com.cn> wrote:
> Hello, Jonathan
>
> When during the test of qmps of CXL events like "cxl-inject-general-media-event",
> I am confuesd about the argument "flags". According to "qapi/cxl.json" in qemu,
> this argument represents "Event Record Flags" in Common Event Record Format.
> However, it seems like the specific 'Event Record Severity' in this field can be
> different from the value of 'Event Status' in "Event Status Register".
>
> For instance (take an injection example in the coverlatter):
>
> { "execute": "cxl-inject-general-media-event",
> "arguments": {
> "path": "/machine/peripheral/cxl-mem0",
> "log": "informational",
> "flags": 1,
> "dpa": 1000,
> "descriptor": 3,
> "type": 3,
> "transaction-type": 192,
> "channel": 3,
> "device": 5,
> "component-id": "iras mem"
> }}
>
> In my understanding, the 'Event Status' is informational and the
> 'Event Record Severity' is Warning event, which means these two arguments are
> independent of each other. Is my understanding correct?
The event status registers dictates the notification path (which log).
So I think that's "informational" here.
Whereas flags is about the specific error. One case where they might be
different is where the Related Event Record Handle is set.
An error might be reported as
1) Several things that were non fatal (each with their own record)
2) In combination they result in a fatal situation (also has it's own record).
The QEMU injection shouldn't restrict these combinations more than the spec
does (which is not at all!).
This same disconnect in error severity is seen in UEFI CPER records for example
where there is a containing record with one severity field, but more specific
parts of record can have lower (or in theory higher) severity.
Jonathan
>
> Many thanks
> Yuquan
>
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [PATCH v9 0/7] QEMU CXL Provide mock CXL events and irq support
@ 2024-03-15 10:24 ` Jonathan Cameron via
0 siblings, 0 replies; 19+ messages in thread
From: Jonathan Cameron via @ 2024-03-15 10:24 UTC (permalink / raw)
To: Yuquan Wang
Cc: dave.jiang, fan.ni, ira.weiny, linux-cxl, linuxarm, qemu-devel
On Fri, 15 Mar 2024 09:52:28 +0800
Yuquan Wang <wangyuquan1236@phytium.com.cn> wrote:
> Hello, Jonathan
>
> When during the test of qmps of CXL events like "cxl-inject-general-media-event",
> I am confuesd about the argument "flags". According to "qapi/cxl.json" in qemu,
> this argument represents "Event Record Flags" in Common Event Record Format.
> However, it seems like the specific 'Event Record Severity' in this field can be
> different from the value of 'Event Status' in "Event Status Register".
>
> For instance (take an injection example in the coverlatter):
>
> { "execute": "cxl-inject-general-media-event",
> "arguments": {
> "path": "/machine/peripheral/cxl-mem0",
> "log": "informational",
> "flags": 1,
> "dpa": 1000,
> "descriptor": 3,
> "type": 3,
> "transaction-type": 192,
> "channel": 3,
> "device": 5,
> "component-id": "iras mem"
> }}
>
> In my understanding, the 'Event Status' is informational and the
> 'Event Record Severity' is Warning event, which means these two arguments are
> independent of each other. Is my understanding correct?
The event status registers dictates the notification path (which log).
So I think that's "informational" here.
Whereas flags is about the specific error. One case where they might be
different is where the Related Event Record Handle is set.
An error might be reported as
1) Several things that were non fatal (each with their own record)
2) In combination they result in a fatal situation (also has it's own record).
The QEMU injection shouldn't restrict these combinations more than the spec
does (which is not at all!).
This same disconnect in error severity is seen in UEFI CPER records for example
where there is a containing record with one severity field, but more specific
parts of record can have lower (or in theory higher) severity.
Jonathan
>
> Many thanks
> Yuquan
>
^ permalink raw reply [flat|nested] 19+ messages in thread
end of thread, other threads:[~2024-03-15 10:27 UTC | newest]
Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-05-30 13:35 [PATCH v9 0/7] QEMU CXL Provide mock CXL events and irq support Jonathan Cameron
2023-05-30 13:35 ` Jonathan Cameron via
2023-05-30 13:35 ` [PATCH v9 1/7] hw/cxl/events: Add event status register Jonathan Cameron
2023-05-30 13:35 ` Jonathan Cameron via
2023-05-30 13:35 ` [PATCH v9 2/7] hw/cxl: Move CXLRetCode definition to cxl_device.h Jonathan Cameron
2023-05-30 13:35 ` Jonathan Cameron via
2023-05-30 13:35 ` [PATCH v9 3/7] hw/cxl/events: Wire up get/clear event mailbox commands Jonathan Cameron
2023-05-30 13:35 ` Jonathan Cameron via
2023-05-30 13:36 ` [PATCH v9 4/7] hw/cxl/events: Add event interrupt support Jonathan Cameron
2023-05-30 13:36 ` Jonathan Cameron via
2023-05-30 13:36 ` [PATCH v9 5/7] hw/cxl/events: Add injection of General Media Events Jonathan Cameron
2023-05-30 13:36 ` Jonathan Cameron via
2023-05-30 13:36 ` [PATCH v9 6/7] hw/cxl/events: Add injection of DRAM events Jonathan Cameron
2023-05-30 13:36 ` Jonathan Cameron via
2023-05-30 13:36 ` [PATCH v9 7/7] hw/cxl/events: Add injection of Memory Module Events Jonathan Cameron
2023-05-30 13:36 ` Jonathan Cameron via
2024-03-15 1:52 ` [PATCH v9 0/7] QEMU CXL Provide mock CXL events and irq support Yuquan Wang
2024-03-15 10:24 ` Jonathan Cameron
2024-03-15 10:24 ` Jonathan Cameron via
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