[PULL,v2,08/61] hw/cxl/events: discard all event records during sanitation

Commit Message

Michael S. Tsirkin July 23, 2024, 10:55 a.m. UTC

From: Hyeonggon Yoo <[e-mail]>

Per CXL r3.1 Section 8.2.9.9.5.1: Sanitize (Opcode 4400h), the
sanitize command should delete all event logs. Introduce
cxl_discard_all_event_logs() and call
this in __do_sanitization().

Signed-off-by: Hyeonggon Yoo <[e-mail]>
Reviewed-by: Davidlohr Bueso <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jonathan Cameron <[e-mail]>

Message-Id: <[e-mail]>
Reviewed-by: Michael S. Tsirkin <[e-mail]>
Signed-off-by: Michael S. Tsirkin <[e-mail]>
---
 include/hw/cxl/cxl_device.h |  1 +
 hw/cxl/cxl-events.c         | 13 +++++++++++++
 hw/cxl/cxl-mailbox-utils.c  |  1 +
 3 files changed, 15 insertions(+)

Patch

diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index 42a622197e..0509d961c3 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -562,6 +562,7 @@  CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
                                  size_t *len);
 CXLRetCode cxl_event_clear_records(CXLDeviceState *cxlds,
                                    CXLClearEventPayload *pl);
+void cxl_discard_all_event_records(CXLDeviceState *cxlds);
 
 void cxl_event_irq_assert(CXLType3Dev *ct3d);
 
diff --git a/hw/cxl/cxl-events.c b/hw/cxl/cxl-events.c
index d397718b1b..12dee2e467 100644
--- a/hw/cxl/cxl-events.c
+++ b/hw/cxl/cxl-events.c
@@ -139,6 +139,19 @@  bool cxl_event_insert(CXLDeviceState *cxlds, CXLEventLogType log_type,
     return cxl_event_count(log) == 1;
 }
 
+void cxl_discard_all_event_records(CXLDeviceState *cxlds)
+{
+    CXLEventLogType log_type;
+    CXLEventLog *log;
+
+    for (log_type = 0; log_type < CXL_EVENT_TYPE_MAX; log_type++) {
+        log = &cxlds->event_logs[log_type];
+        while (!cxl_event_empty(log)) {
+            cxl_event_delete_head(cxlds, log_type, log);
+        }
+    }
+}
+
 CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
                                  uint8_t log_type, int max_recs,
                                  size_t *len)
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index 522d9aa589..3c9600c39c 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -949,6 +949,7 @@  static void __do_sanitization(CXLType3Dev *ct3d)
             memset(lsa, 0, memory_region_size(mr));
         }
     }
+    cxl_discard_all_event_records(&ct3d->cxl_dstate);
 }
 
 /*