hw/cxl: Create helper function to create DC Event Records from extents

Prepatory patch for following FMAPI Add/Release Patches. Refactors part
of qmp_cxl_process_dynamic_capacity_prescriptive() into a helper
function to create DC Event Records and insert in the event log.

Moves definition for CXL_NUM_EXTENTS_SUPPORTED to cxl.h so it can be
accessed by cxl-mailbox-utils.c and cxl-events.c, where the helper
function is defined.

Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Anisa Su <anisa.su@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20250714174509.1984430-10-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 1 insertions, 36 deletions

diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index 4a45b4510e..4e975b1a42 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -1957,15 +1957,11 @@ static void qmp_cxl_process_dynamic_capacity_prescriptive(const char *path,
         CxlDynamicCapacityExtentList *records, Error **errp)
 {
     Object *obj;
-    CXLEventDynamicCapacity dCap = {};
-    CXLEventRecordHdr *hdr = &dCap.hdr;
     CXLType3Dev *dcd;
-    uint8_t flags = 1 << CXL_EVENT_TYPE_INFO;
     uint32_t num_extents = 0;
     CxlDynamicCapacityExtentList *list;
     CXLDCExtentGroup *group = NULL;
     g_autofree CXLDCExtentRaw *extents = NULL;
-    uint8_t enc_log = CXL_EVENT_TYPE_DYNAMIC_CAP;
     uint64_t dpa, offset, len, block_size;
     g_autofree unsigned long *blk_bitmap = NULL;
     int i;
@@ -2078,38 +2074,7 @@ static void qmp_cxl_process_dynamic_capacity_prescriptive(const char *path,
         dcd->dc.total_extent_count += num_extents;
     }
 
-    /*
-     * CXL r3.1 section 8.2.9.2.1.6: Dynamic Capacity Event Record
-     *
-     * All Dynamic Capacity event records shall set the Event Record Severity
-     * field in the Common Event Record Format to Informational Event. All
-     * Dynamic Capacity related events shall be logged in the Dynamic Capacity
-     * Event Log.
-     */
-    cxl_assign_event_header(hdr, &dynamic_capacity_uuid, flags, sizeof(dCap),
-                            cxl_device_get_timestamp(&dcd->cxl_dstate));
-
-    dCap.type = type;
-    /* FIXME: for now, validity flag is cleared */
-    dCap.validity_flags = 0;
-    stw_le_p(&dCap.host_id, hid);
-    /* only valid for DC_REGION_CONFIG_UPDATED event */
-    dCap.updated_region_id = 0;
-    for (i = 0; i < num_extents; i++) {
-        memcpy(&dCap.dynamic_capacity_extent, &extents[i],
-               sizeof(CXLDCExtentRaw));
-
-        dCap.flags = 0;
-        if (i < num_extents - 1) {
-            /* Set "More" flag */
-            dCap.flags |= BIT(0);
-        }
-
-        if (cxl_event_insert(&dcd->cxl_dstate, enc_log,
-                             (CXLEventRecordRaw *)&dCap)) {
-            cxl_event_irq_assert(dcd);
-        }
-    }
+    cxl_create_dc_event_records_for_extents(dcd, type, extents, num_extents);
 }
 
 void qmp_cxl_add_dynamic_capacity(const char *path, uint16_t host_id,