drm/xe: Add vm_bind_ioctl_ops_fini helper

Simplify VM bind code by signaling out-fences / destroying VMAs in a
single location. Will help with transition single job for many bind ops.

v2:
 - s/vm_bind_ioctl_ops_install_fences/vm_bind_ioctl_ops_fini (Oak)
 - Set last fence in vm_bind_ioctl_ops_fini (Oak)

Cc: Oak Zeng <oak.zeng@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Oak Zeng <oak.zeng@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240425045513.1913039-10-matthew.brost@intel.com

drivers/gpu/drm/xe/xe_vm.c

@@ -1646,7 +1646,7 @@ xe_vm_unbind_vma(struct xe_vma *vma, struct xe_exec_queue *q,
 	struct dma_fence *fence = NULL;
 	struct dma_fence **fences = NULL;
 	struct dma_fence_array *cf = NULL;
-	int cur_fence = 0, i;
+	int cur_fence = 0;
 	int number_tiles = hweight8(vma->tile_present);
 	int err;
 	u8 id;
@@ -1704,10 +1704,6 @@ xe_vm_unbind_vma(struct xe_vma *vma, struct xe_exec_queue *q,
 
 	fence = cf ? &cf->base : !fence ?
 		xe_exec_queue_last_fence_get(wait_exec_queue, vm) : fence;
-	if (last_op) {
-		for (i = 0; i < num_syncs; i++)
-			xe_sync_entry_signal(&syncs[i], fence);
-	}
 
 	return fence;
 
@@ -1731,7 +1727,7 @@ xe_vm_bind_vma(struct xe_vma *vma, struct xe_exec_queue *q,
 	struct dma_fence **fences = NULL;
 	struct dma_fence_array *cf = NULL;
 	struct xe_vm *vm = xe_vma_vm(vma);
-	int cur_fence = 0, i;
+	int cur_fence = 0;
 	int number_tiles = hweight8(tile_mask);
 	int err;
 	u8 id;
@@ -1778,12 +1774,6 @@ xe_vm_bind_vma(struct xe_vma *vma, struct xe_exec_queue *q,
 		}
 	}
 
-	if (last_op) {
-		for (i = 0; i < num_syncs; i++)
-			xe_sync_entry_signal(&syncs[i],
-					     cf ? &cf->base : fence);
-	}
-
 	return cf ? &cf->base : fence;
 
 err_fences:
@@ -1835,20 +1825,11 @@ xe_vm_bind(struct xe_vm *vm, struct xe_vma *vma, struct xe_exec_queue *q,
 		if (IS_ERR(fence))
 			return fence;
 	} else {
-		int i;
-
 		xe_assert(vm->xe, xe_vm_in_fault_mode(vm));
 
 		fence = xe_exec_queue_last_fence_get(wait_exec_queue, vm);
-		if (last_op) {
-			for (i = 0; i < num_syncs; i++)
-				xe_sync_entry_signal(&syncs[i], fence);
-		}
 	}
 
-	if (last_op)
-		xe_exec_queue_last_fence_set(wait_exec_queue, vm, fence);
-
 	return fence;
 }
 
@@ -1858,7 +1839,6 @@ xe_vm_unbind(struct xe_vm *vm, struct xe_vma *vma,
 	     u32 num_syncs, bool first_op, bool last_op)
 {
 	struct dma_fence *fence;
-	struct xe_exec_queue *wait_exec_queue = to_wait_exec_queue(vm, q);
 
 	xe_vm_assert_held(vm);
 	xe_bo_assert_held(xe_vma_bo(vma));
@@ -1867,10 +1847,6 @@ xe_vm_unbind(struct xe_vm *vm, struct xe_vma *vma,
 	if (IS_ERR(fence))
 		return fence;
 
-	xe_vma_destroy(vma, fence);
-	if (last_op)
-		xe_exec_queue_last_fence_set(wait_exec_queue, vm, fence);
-
 	return fence;
 }
 
@@ -2025,17 +2001,7 @@ xe_vm_prefetch(struct xe_vm *vm, struct xe_vma *vma,
 		return xe_vm_bind(vm, vma, q, xe_vma_bo(vma), syncs, num_syncs,
 				  vma->tile_mask, true, first_op, last_op);
 	} else {
-		struct dma_fence *fence =
-			xe_exec_queue_last_fence_get(wait_exec_queue, vm);
-		int i;
-
-		/* Nothing to do, signal fences now */
-		if (last_op) {
-			for (i = 0; i < num_syncs; i++)
-				xe_sync_entry_signal(&syncs[i], fence);
-		}
-
-		return fence;
+		return xe_exec_queue_last_fence_get(wait_exec_queue, vm);
 	}
 }
 
@@ -2838,6 +2804,26 @@ static struct dma_fence *ops_execute(struct xe_vm *vm,
 	return fence;
 }
 
+static void vm_bind_ioctl_ops_fini(struct xe_vm *vm, struct xe_vma_ops *vops,
+				   struct dma_fence *fence)
+{
+	struct xe_exec_queue *wait_exec_queue = to_wait_exec_queue(vm, vops->q);
+	struct xe_vma_op *op;
+	int i;
+
+	list_for_each_entry(op, &vops->list, link) {
+		if (op->base.op == DRM_GPUVA_OP_UNMAP)
+			xe_vma_destroy(gpuva_to_vma(op->base.unmap.va), fence);
+		else if (op->base.op == DRM_GPUVA_OP_REMAP)
+			xe_vma_destroy(gpuva_to_vma(op->base.remap.unmap->va),
+				       fence);
+	}
+	for (i = 0; i < vops->num_syncs; i++)
+		xe_sync_entry_signal(vops->syncs + i, fence);
+	xe_exec_queue_last_fence_set(wait_exec_queue, vm, fence);
+	dma_fence_put(fence);
+}
+
 static int vm_bind_ioctl_ops_execute(struct xe_vm *vm,
 				     struct xe_vma_ops *vops)
 {
@@ -2862,7 +2848,7 @@ static int vm_bind_ioctl_ops_execute(struct xe_vm *vm,
 			xe_vm_kill(vm, false);
 			goto unlock;
 		} else {
-			dma_fence_put(fence);
+			vm_bind_ioctl_ops_fini(vm, vops, fence);
 		}
 	}