drm/xe: Deprecate XE_EXEC_QUEUE_SET_PROPERTY_COMPUTE_MODE implementation

We are going to remove XE_EXEC_QUEUE_SET_PROPERTY_COMPUTE_MODE from the
uAPI, deprecate the implementation first by making
XE_EXEC_QUEUE_SET_PROPERTY_COMPUTE_MODE a NOP. After removal of
XE_EXEC_QUEUE_SET_PROPERTY_COMPUTE_MODE the proper is simply inherented
from the VM.

v2:
 - Update commit message with explaination of removal (Niranjana)
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/xe_exec_queue.c

@@ -323,39 +323,6 @@ static int exec_queue_set_preemption_timeout(struct xe_device *xe,
 static int exec_queue_set_compute_mode(struct xe_device *xe, struct xe_exec_queue *q,
 				       u64 value, bool create)
 {
-	if (XE_IOCTL_DBG(xe, !create))
-		return -EINVAL;
-
-	if (XE_IOCTL_DBG(xe, q->flags & EXEC_QUEUE_FLAG_COMPUTE_MODE))
-		return -EINVAL;
-
-	if (XE_IOCTL_DBG(xe, q->flags & EXEC_QUEUE_FLAG_VM))
-		return -EINVAL;
-
-	if (value) {
-		struct xe_vm *vm = q->vm;
-		int err;
-
-		if (XE_IOCTL_DBG(xe, xe_vm_in_fault_mode(vm)))
-			return -EOPNOTSUPP;
-
-		if (XE_IOCTL_DBG(xe, !xe_vm_in_compute_mode(vm)))
-			return -EOPNOTSUPP;
-
-		if (XE_IOCTL_DBG(xe, q->width != 1))
-			return -EINVAL;
-
-		q->compute.context = dma_fence_context_alloc(1);
-		spin_lock_init(&q->compute.lock);
-
-		err = xe_vm_add_compute_exec_queue(vm, q);
-		if (XE_IOCTL_DBG(xe, err))
-			return err;
-
-		q->flags |= EXEC_QUEUE_FLAG_COMPUTE_MODE;
-		q->flags &= ~EXEC_QUEUE_FLAG_PERSISTENT;
-	}
-
 	return 0;
 }
 
@@ -365,7 +332,7 @@ static int exec_queue_set_persistence(struct xe_device *xe, struct xe_exec_queue
 	if (XE_IOCTL_DBG(xe, !create))
 		return -EINVAL;
 
-	if (XE_IOCTL_DBG(xe, q->flags & EXEC_QUEUE_FLAG_COMPUTE_MODE))
+	if (XE_IOCTL_DBG(xe, xe_vm_in_compute_mode(q->vm)))
 		return -EINVAL;
 
 	if (value)
@@ -742,18 +709,21 @@ int xe_exec_queue_create_ioctl(struct drm_device *dev, void *data,
 		xe_vm_put(vm);
 		if (IS_ERR(q))
 			return PTR_ERR(q);
+
+		if (xe_vm_in_compute_mode(vm)) {
+			q->compute.context = dma_fence_context_alloc(1);
+			spin_lock_init(&q->compute.lock);
+
+			err = xe_vm_add_compute_exec_queue(vm, q);
+			if (XE_IOCTL_DBG(xe, err))
+				goto put_exec_queue;
+		}
 	}
 
 	if (args->extensions) {
 		err = exec_queue_user_extensions(xe, q, args->extensions, 0, true);
 		if (XE_IOCTL_DBG(xe, err))
-			goto put_exec_queue;
-	}
-
-	if (XE_IOCTL_DBG(xe, q->vm && xe_vm_in_compute_mode(q->vm) !=
-			 !!(q->flags & EXEC_QUEUE_FLAG_COMPUTE_MODE))) {
-		err = -EOPNOTSUPP;
-		goto put_exec_queue;
+			goto kill_exec_queue;
 	}
 
 	q->persistent.xef = xef;
@@ -762,14 +732,15 @@ int xe_exec_queue_create_ioctl(struct drm_device *dev, void *data,
 	err = xa_alloc(&xef->exec_queue.xa, &id, q, xa_limit_32b, GFP_KERNEL);
 	mutex_unlock(&xef->exec_queue.lock);
 	if (err)
-		goto put_exec_queue;
+		goto kill_exec_queue;
 
 	args->exec_queue_id = id;
 
 	return 0;
 
-put_exec_queue:
+kill_exec_queue:
 	xe_exec_queue_kill(q);
+put_exec_queue:
 	xe_exec_queue_put(q);
 	return err;
 }

drivers/gpu/drm/xe/xe_exec_queue_types.h

@@ -73,12 +73,10 @@ struct xe_exec_queue {
 #define EXEC_QUEUE_FLAG_PERMANENT		BIT(2)
 /* queue keeps running pending jobs after destroy ioctl */
 #define EXEC_QUEUE_FLAG_PERSISTENT		BIT(3)
-/* queue for use with compute VMs */
-#define EXEC_QUEUE_FLAG_COMPUTE_MODE		BIT(4)
 /* for VM jobs. Caller needs to hold rpm ref when creating queue with this flag */
-#define EXEC_QUEUE_FLAG_VM			BIT(5)
+#define EXEC_QUEUE_FLAG_VM			BIT(4)
 /* child of VM queue for multi-tile VM jobs */
-#define EXEC_QUEUE_FLAG_BIND_ENGINE_CHILD	BIT(6)
+#define EXEC_QUEUE_FLAG_BIND_ENGINE_CHILD	BIT(5)
 
 	/**
 	 * @flags: flags for this exec queue, should statically setup aside from ban