drm/xe/multi_queue: Use QUEUE_TIMESTAMP as job timestamp for multi-queue

Each queue in a multi queue group has a dedicated timestamp counter. Use
this QUEUE TIMESTAMP register to capture the start timestamp for the
job.

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260507162016.3888309-23-umesh.nerlige.ramappa@intel.com

Author: unerlige

drivers/gpu/drm/xe/xe_ring_ops.c

@@ -269,8 +269,12 @@ static u32 get_ppgtt_flag(struct xe_sched_job *job)
 static int emit_copy_timestamp(struct xe_device *xe, struct xe_lrc *lrc,
 			       u32 *dw, int i)
 {
+	const struct xe_reg reg = xe_lrc_is_multi_queue(lrc) ?
+				   RING_QUEUE_TIMESTAMP(0) :
+				   RING_CTX_TIMESTAMP(0);
+
 	dw[i++] = MI_STORE_REGISTER_MEM | MI_SRM_USE_GGTT | MI_SRM_ADD_CS_OFFSET;
-	dw[i++] = RING_CTX_TIMESTAMP(0).addr;
+	dw[i++] = reg.addr;
 	dw[i++] = xe_lrc_ctx_job_timestamp_ggtt_addr(lrc);
 	dw[i++] = 0;
 
@@ -281,7 +285,7 @@ static int emit_copy_timestamp(struct xe_device *xe, struct xe_lrc *lrc,
 	if (IS_SRIOV_VF(xe)) {
 		dw[i++] = MI_STORE_REGISTER_MEM | MI_SRM_USE_GGTT |
 			MI_SRM_ADD_CS_OFFSET;
-		dw[i++] = RING_CTX_TIMESTAMP(0).addr;
+		dw[i++] = reg.addr;
 		dw[i++] = xe_lrc_ctx_timestamp_ggtt_addr(lrc);
 		dw[i++] = 0;
 	}