[RFC PATCH 11/28] drm/xe: Add (re)bind to SVM page fault handler

Matthew Brost matthew.brost at intel.com
Wed Aug 28 02:48:44 UTC 2024


Add (re)bind to SVM page fault handler. To facilitate add support
function to VM layer which (re)binds a SVM range. Also teach PT layer to
understand (re)binds of SVM ranges.

Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
 drivers/gpu/drm/xe/xe_pt.c       | 140 +++++++++++++++++++++++++++----
 drivers/gpu/drm/xe/xe_pt_types.h |   2 +
 drivers/gpu/drm/xe/xe_svm.c      |  45 +++++++++-
 drivers/gpu/drm/xe/xe_svm.h      |  11 +++
 drivers/gpu/drm/xe/xe_vm.c       |  80 ++++++++++++++++++
 drivers/gpu/drm/xe/xe_vm.h       |   5 ++
 drivers/gpu/drm/xe/xe_vm_types.h |  19 +++++
 7 files changed, 286 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_pt.c b/drivers/gpu/drm/xe/xe_pt.c
index b2db79251825..d5e444af7e02 100644
--- a/drivers/gpu/drm/xe/xe_pt.c
+++ b/drivers/gpu/drm/xe/xe_pt.c
@@ -587,6 +587,7 @@ static const struct xe_pt_walk_ops xe_pt_stage_bind_ops = {
  * range.
  * @tile: The tile we're building for.
  * @vma: The vma indicating the address range.
+ * @range: The range indicating the address range.
  * @entries: Storage for the update entries used for connecting the tree to
  * the main tree at commit time.
  * @num_entries: On output contains the number of @entries used.
@@ -602,6 +603,7 @@ static const struct xe_pt_walk_ops xe_pt_stage_bind_ops = {
  */
 static int
 xe_pt_stage_bind(struct xe_tile *tile, struct xe_vma *vma,
+		 struct xe_svm_range *range,
 		 struct xe_vm_pgtable_update *entries, u32 *num_entries)
 {
 	struct xe_device *xe = tile_to_xe(tile);
@@ -618,7 +620,8 @@ xe_pt_stage_bind(struct xe_tile *tile, struct xe_vma *vma,
 		.vm = xe_vma_vm(vma),
 		.tile = tile,
 		.curs = &curs,
-		.va_curs_start = xe_vma_start(vma),
+		.va_curs_start = range ? range->base.va.start :
+			xe_vma_start(vma),
 		.vma = vma,
 		.wupd.entries = entries,
 		.needs_64K = (xe_vma_vm(vma)->flags & XE_VM_FLAG_64K) && is_devmem,
@@ -671,7 +674,11 @@ xe_pt_stage_bind(struct xe_tile *tile, struct xe_vma *vma,
 
 	xe_bo_assert_held(bo);
 
-	if (!xe_vma_is_null(vma)) {
+	if (range) {
+		xe_res_first_dma(range->base.dma_addr, 0,
+				 range->base.va.end - range->base.va.start,
+				 range->base.order, &curs);
+	} else if (!xe_vma_is_null(vma)) {
 		if (xe_vma_is_userptr(vma))
 			xe_res_first_sg(to_userptr_vma(vma)->userptr.sg, 0,
 					xe_vma_size(vma), &curs);
@@ -685,8 +692,10 @@ xe_pt_stage_bind(struct xe_tile *tile, struct xe_vma *vma,
 		curs.size = xe_vma_size(vma);
 	}
 
-	ret = xe_pt_walk_range(&pt->base, pt->level, xe_vma_start(vma),
-			       xe_vma_end(vma), &xe_walk.base);
+	ret = xe_pt_walk_range(&pt->base, pt->level,
+			       range ? range->base.va.start : xe_vma_start(vma),
+			       range ? range->base.va.end : xe_vma_end(vma),
+			       &xe_walk.base);
 
 	*num_entries = xe_walk.wupd.num_used_entries;
 	return ret;
@@ -902,7 +911,7 @@ static void xe_pt_commit_locks_assert(struct xe_vma *vma)
 
 	lockdep_assert_held(&vm->lock);
 
-	if (!xe_vma_is_userptr(vma) && !xe_vma_is_null(vma))
+	if (!xe_vma_has_no_bo(vma))
 		dma_resv_assert_held(xe_vma_bo(vma)->ttm.base.resv);
 
 	xe_vm_assert_held(vm);
@@ -1004,12 +1013,13 @@ static void xe_pt_free_bind(struct xe_vm_pgtable_update *entries,
 
 static int
 xe_pt_prepare_bind(struct xe_tile *tile, struct xe_vma *vma,
+		   struct xe_svm_range *range,
 		   struct xe_vm_pgtable_update *entries, u32 *num_entries)
 {
 	int err;
 
 	*num_entries = 0;
-	err = xe_pt_stage_bind(tile, vma, entries, num_entries);
+	err = xe_pt_stage_bind(tile, vma, range, entries, num_entries);
 	if (!err)
 		xe_tile_assert(tile, *num_entries);
 
@@ -1115,6 +1125,8 @@ static int op_add_deps(struct xe_vm *vm, struct xe_vma_op *op,
 	case DRM_GPUVA_OP_PREFETCH:
 		err = vma_add_deps(gpuva_to_vma(op->base.prefetch.va), job);
 		break;
+	case DRM_GPUVA_OP_USER:
+		break;
 	default:
 		drm_warn(&vm->xe->drm, "NOT POSSIBLE");
 	}
@@ -1339,6 +1351,34 @@ static int xe_pt_userptr_pre_commit(struct xe_migrate_pt_update *pt_update)
 	return err;
 }
 
+static int xe_pt_svm_pre_commit(struct xe_migrate_pt_update *pt_update)
+{
+	struct xe_vm *vm = pt_update->vops->vm;
+	struct xe_vma_ops *vops = pt_update->vops;
+	struct xe_vma_op *op;
+	int err;
+
+	err = xe_pt_pre_commit(pt_update);
+	if (err)
+		return err;
+
+	xe_svm_notifier_lock(vm);
+
+	list_for_each_entry(op, &vops->list, link) {
+		struct xe_svm_range *range = op->map_range.range;
+
+		xe_assert(vm->xe, xe_vma_is_system_allocator(op->map_range.vma));
+		xe_assert(vm->xe, op->subop == XE_VMA_SUBOP_MAP_RANGE);
+
+		if (!xe_svm_range_pages_valid(range)) {
+			xe_svm_notifier_unlock(vm);
+			return -EAGAIN;
+		}
+	}
+
+	return 0;
+}
+
 struct invalidation_fence {
 	struct xe_gt_tlb_invalidation_fence base;
 	struct xe_gt *gt;
@@ -1632,12 +1672,12 @@ xe_pt_commit_prepare_unbind(struct xe_vma *vma,
 
 static void
 xe_pt_update_ops_rfence_interval(struct xe_vm_pgtable_update_ops *pt_update_ops,
-				 struct xe_vma *vma)
+				 u64 start, u64 end)
 {
+	u64 last;
 	u32 current_op = pt_update_ops->current_op;
 	struct xe_vm_pgtable_update_op *pt_op = &pt_update_ops->ops[current_op];
 	int i, level = 0;
-	u64 start, last;
 
 	for (i = 0; i < pt_op->num_entries; i++) {
 		const struct xe_vm_pgtable_update *entry = &pt_op->entries[i];
@@ -1647,8 +1687,8 @@ xe_pt_update_ops_rfence_interval(struct xe_vm_pgtable_update_ops *pt_update_ops,
 	}
 
 	/* Greedy (non-optimal) calculation but simple */
-	start = ALIGN_DOWN(xe_vma_start(vma), 0x1ull << xe_pt_shift(level));
-	last = ALIGN(xe_vma_end(vma), 0x1ull << xe_pt_shift(level)) - 1;
+	start = ALIGN_DOWN(start, 0x1ull << xe_pt_shift(level));
+	last = ALIGN(end, 0x1ull << xe_pt_shift(level)) - 1;
 
 	if (start < pt_update_ops->start)
 		pt_update_ops->start = start;
@@ -1690,7 +1730,7 @@ static int bind_op_prepare(struct xe_vm *vm, struct xe_tile *tile,
 	if (err)
 		return err;
 
-	err = xe_pt_prepare_bind(tile, vma, pt_op->entries,
+	err = xe_pt_prepare_bind(tile, vma, NULL, pt_op->entries,
 				 &pt_op->num_entries);
 	if (!err) {
 		xe_tile_assert(tile, pt_op->num_entries <=
@@ -1698,7 +1738,9 @@ static int bind_op_prepare(struct xe_vm *vm, struct xe_tile *tile,
 		xe_vm_dbg_print_entries(tile_to_xe(tile), pt_op->entries,
 					pt_op->num_entries, true);
 
-		xe_pt_update_ops_rfence_interval(pt_update_ops, vma);
+		xe_pt_update_ops_rfence_interval(pt_update_ops,
+						 xe_vma_start(vma),
+						 xe_vma_end(vma));
 		++pt_update_ops->current_op;
 		pt_update_ops->needs_userptr_lock |= xe_vma_is_userptr(vma);
 
@@ -1732,6 +1774,48 @@ static int bind_op_prepare(struct xe_vm *vm, struct xe_tile *tile,
 	return err;
 }
 
+static int bind_range_prepare(struct xe_vm *vm, struct xe_tile *tile,
+			      struct xe_vm_pgtable_update_ops *pt_update_ops,
+			      struct xe_vma *vma, struct xe_svm_range *range)
+{
+	u32 current_op = pt_update_ops->current_op;
+	struct xe_vm_pgtable_update_op *pt_op = &pt_update_ops->ops[current_op];
+	int err;
+
+	xe_tile_assert(tile, xe_vma_is_system_allocator(vma));
+
+	vm_dbg(&xe_vma_vm(vma)->xe->drm,
+	       "Preparing bind, with range [%llx...%llx)\n",
+	       range->base.va.start, range->base.va.end - 1);
+
+	pt_op->vma = NULL;
+	pt_op->bind = true;
+	pt_op->rebind = BIT(tile->id) & range->tile_present;
+
+	err = xe_pt_prepare_bind(tile, vma, range, pt_op->entries,
+				 &pt_op->num_entries);
+	if (!err) {
+		xe_tile_assert(tile, pt_op->num_entries <=
+			       ARRAY_SIZE(pt_op->entries));
+		xe_vm_dbg_print_entries(tile_to_xe(tile), pt_op->entries,
+					pt_op->num_entries, true);
+
+		xe_pt_update_ops_rfence_interval(pt_update_ops,
+						 range->base.va.start,
+						 range->base.va.end);
+		++pt_update_ops->current_op;
+		pt_update_ops->needs_svm_lock = true;
+
+		pt_op->vma = vma;
+		xe_pt_commit_prepare_bind(vma, pt_op->entries,
+					  pt_op->num_entries, pt_op->rebind);
+	} else {
+		xe_pt_cancel_bind(vma, pt_op->entries, pt_op->num_entries);
+	}
+
+	return err;
+}
+
 static int unbind_op_prepare(struct xe_tile *tile,
 			     struct xe_vm_pgtable_update_ops *pt_update_ops,
 			     struct xe_vma *vma)
@@ -1769,7 +1853,8 @@ static int unbind_op_prepare(struct xe_tile *tile,
 
 	xe_vm_dbg_print_entries(tile_to_xe(tile), pt_op->entries,
 				pt_op->num_entries, false);
-	xe_pt_update_ops_rfence_interval(pt_update_ops, vma);
+	xe_pt_update_ops_rfence_interval(pt_update_ops, xe_vma_start(vma),
+					 xe_vma_end(vma));
 	++pt_update_ops->current_op;
 	pt_update_ops->needs_userptr_lock |= xe_vma_is_userptr(vma);
 	pt_update_ops->needs_invalidation = true;
@@ -1839,6 +1924,15 @@ static int op_prepare(struct xe_vm *vm,
 		pt_update_ops->wait_vm_kernel = true;
 		break;
 	}
+	case DRM_GPUVA_OP_USER:
+		if (op->subop == XE_VMA_SUBOP_MAP_RANGE) {
+			xe_assert(vm->xe, xe_vma_is_system_allocator(op->map_range.vma));
+
+			err = bind_range_prepare(vm, tile, pt_update_ops,
+						 op->map_range.vma,
+						 op->map_range.range);
+		}
+		break;
 	default:
 		drm_warn(&vm->xe->drm, "NOT POSSIBLE");
 	}
@@ -2020,6 +2114,14 @@ static void op_commit(struct xe_vm *vm,
 				       fence2);
 		break;
 	}
+	case DRM_GPUVA_OP_USER:
+	{
+		if (op->subop == XE_VMA_SUBOP_MAP_RANGE) {
+			op->map_range.range->tile_present |= BIT(tile->id);
+			op->map_range.range->tile_invalidated &= ~BIT(tile->id);
+		}
+		break;
+	}
 	default:
 		drm_warn(&vm->xe->drm, "NOT POSSIBLE");
 	}
@@ -2037,6 +2139,12 @@ static const struct xe_migrate_pt_update_ops userptr_migrate_ops = {
 	.pre_commit = xe_pt_userptr_pre_commit,
 };
 
+static const struct xe_migrate_pt_update_ops svm_migrate_ops = {
+	.populate = xe_vm_populate_pgtable,
+	.clear = xe_migrate_clear_pgtable_callback,
+	.pre_commit = xe_pt_svm_pre_commit,
+};
+
 /**
  * xe_pt_update_ops_run() - Run PT update operations
  * @tile: Tile of PT update operations
@@ -2062,7 +2170,9 @@ xe_pt_update_ops_run(struct xe_tile *tile, struct xe_vma_ops *vops)
 	struct xe_vma_op *op;
 	int err = 0, i;
 	struct xe_migrate_pt_update update = {
-		.ops = pt_update_ops->needs_userptr_lock ?
+		.ops = pt_update_ops->needs_svm_lock ?
+			&svm_migrate_ops :
+			pt_update_ops->needs_userptr_lock ?
 			&userptr_migrate_ops :
 			&migrate_ops,
 		.vops = vops,
@@ -2183,6 +2293,8 @@ xe_pt_update_ops_run(struct xe_tile *tile, struct xe_vma_ops *vops)
 				  &ifence->base.base, &mfence->base.base);
 	}
 
+	if (pt_update_ops->needs_svm_lock)
+		xe_svm_notifier_unlock(vm);
 	if (pt_update_ops->needs_userptr_lock)
 		up_read(&vm->userptr.notifier_lock);
 
diff --git a/drivers/gpu/drm/xe/xe_pt_types.h b/drivers/gpu/drm/xe/xe_pt_types.h
index 384cc04de719..69eab6f37cfe 100644
--- a/drivers/gpu/drm/xe/xe_pt_types.h
+++ b/drivers/gpu/drm/xe/xe_pt_types.h
@@ -104,6 +104,8 @@ struct xe_vm_pgtable_update_ops {
 	u32 num_ops;
 	/** @current_op: current operations */
 	u32 current_op;
+	/** @needs_svm_lock: Needs SVM lock */
+	bool needs_svm_lock;
 	/** @needs_userptr_lock: Needs userptr lock */
 	bool needs_userptr_lock;
 	/** @needs_invalidation: Needs invalidation */
diff --git a/drivers/gpu/drm/xe/xe_svm.c b/drivers/gpu/drm/xe/xe_svm.c
index 3ac84f9615e2..28d139b3dbb7 100644
--- a/drivers/gpu/drm/xe/xe_svm.c
+++ b/drivers/gpu/drm/xe/xe_svm.c
@@ -210,12 +210,22 @@ void xe_svm_fini(struct xe_vm *vm)
 	drm_gpusvm_fini(&vm->svm.gpusvm);
 }
 
+static bool xe_svm_range_is_valid(struct xe_svm_range *range,
+				  struct xe_tile *tile)
+{
+	return (range->tile_present & ~range->tile_invalidated) & BIT(tile->id);
+}
+
 int xe_svm_handle_pagefault(struct xe_vm *vm, struct xe_vma *vma,
 			    struct xe_tile *tile, u64 fault_addr,
 			    bool atomic)
 {
 	struct drm_gpusvm_ctx ctx = { .read_only = xe_vma_read_only(vma), };
+	struct xe_svm_range *range;
 	struct drm_gpusvm_range *r;
+	struct drm_exec exec;
+	struct dma_fence *fence;
+	ktime_t end = 0;
 	int err;
 
 	lockdep_assert_held_write(&vm->lock);
@@ -229,11 +239,42 @@ int xe_svm_handle_pagefault(struct xe_vm *vm, struct xe_vma *vma,
 	if (IS_ERR(r))
 		return PTR_ERR(r);
 
-	err = drm_gpusvm_range_get_pages(&vm->svm.gpusvm, r, false);
+	range = to_xe_range(r);
+	if (xe_svm_range_is_valid(range, tile))
+		return 0;
+
+	err = drm_gpusvm_range_get_pages(&vm->svm.gpusvm, r, &ctx);
 	if (err == -EFAULT || err == -EPERM)	/* Corner where CPU mappings have change */
 	       goto retry;
+	if (err)
+		goto err_out;
+
+retry_bind:
+	drm_exec_init(&exec, 0, 0);
+	drm_exec_until_all_locked(&exec) {
+		err = drm_exec_lock_obj(&exec, vm->gpuvm.r_obj);
+		drm_exec_retry_on_contention(&exec);
+		if (err) {
+			drm_exec_fini(&exec);
+			goto err_out;
+		}
+
+		fence = xe_vm_range_rebind(vm, vma, range, BIT(tile->id));
+		if (IS_ERR(fence)) {
+			drm_exec_fini(&exec);
+			err = PTR_ERR(fence);
+			if (err == -EAGAIN)
+				goto retry;
+			if (xe_vm_validate_should_retry(&exec, err, &end))
+				goto retry_bind;
+			goto err_out;
+		}
+	}
+	drm_exec_fini(&exec);
 
-	/* TODO: Issue bind */
+	dma_fence_wait(fence, false);
+	dma_fence_put(fence);
 
+err_out:
 	return err;
 }
diff --git a/drivers/gpu/drm/xe/xe_svm.h b/drivers/gpu/drm/xe/xe_svm.h
index b053b11692f0..7dabffaf4c65 100644
--- a/drivers/gpu/drm/xe/xe_svm.h
+++ b/drivers/gpu/drm/xe/xe_svm.h
@@ -25,4 +25,15 @@ int xe_svm_handle_pagefault(struct xe_vm *vm, struct xe_vma *vma,
 			    struct xe_tile *tile, u64 fault_addr,
 			    bool atomic);
 
+static inline bool xe_svm_range_pages_valid(struct xe_svm_range *range)
+{
+	return drm_gpusvm_range_pages_valid(range->base.gpusvm, &range->base);
+}
+
+#define xe_svm_notifier_lock(vm__)	\
+	drm_gpusvm_notifier_lock(&(vm__)->svm.gpusvm)
+
+#define xe_svm_notifier_unlock(vm__)	\
+	drm_gpusvm_notifier_unlock(&(vm__)->svm.gpusvm)
+
 #endif
diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 17ad6a533b2f..6261a4cb2e1d 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -894,6 +894,84 @@ struct dma_fence *xe_vma_rebind(struct xe_vm *vm, struct xe_vma *vma, u8 tile_ma
 	return fence;
 }
 
+static void xe_vm_populate_range_rebind(struct xe_vma_op *op,
+					struct xe_vma *vma,
+					struct xe_svm_range *range,
+					u8 tile_mask)
+{
+	INIT_LIST_HEAD(&op->link);
+	op->tile_mask = tile_mask;
+	op->base.op = DRM_GPUVA_OP_USER;
+	op->subop = XE_VMA_SUBOP_MAP_RANGE;
+	op->map_range.vma = vma;
+	op->map_range.range = range;
+}
+
+static int
+xe_vm_ops_add_range_rebind(struct xe_vma_ops *vops,
+			   struct xe_vma *vma,
+			   struct xe_svm_range *range,
+			   u8 tile_mask)
+{
+	struct xe_vma_op *op;
+
+	op = kzalloc(sizeof(*op), GFP_KERNEL);
+	if (!op)
+		return -ENOMEM;
+
+	xe_vm_populate_range_rebind(op, vma, range, tile_mask);
+	list_add_tail(&op->link, &vops->list);
+	xe_vma_ops_incr_pt_update_ops(vops, tile_mask);
+
+	return 0;
+}
+
+struct dma_fence *xe_vm_range_rebind(struct xe_vm *vm,
+				     struct xe_vma *vma,
+				     struct xe_svm_range *range,
+				     u8 tile_mask)
+{
+	struct dma_fence *fence = NULL;
+	struct xe_vma_ops vops;
+	struct xe_vma_op *op, *next_op;
+	struct xe_tile *tile;
+	u8 id;
+	int err;
+
+	lockdep_assert_held(&vm->lock);
+	xe_vm_assert_held(vm);
+	xe_assert(vm->xe, xe_vm_in_fault_mode(vm));
+	xe_assert(vm->xe, xe_vma_is_system_allocator(vma));
+
+	xe_vma_ops_init(&vops, vm, NULL, NULL, 0);
+	for_each_tile(tile, vm->xe, id) {
+		vops.pt_update_ops[id].wait_vm_bookkeep = true;
+		vops.pt_update_ops[tile->id].q =
+			xe_tile_migrate_exec_queue(tile);
+	}
+
+	err = xe_vm_ops_add_range_rebind(&vops, vma, range, tile_mask);
+	if (err)
+		return ERR_PTR(err);
+
+	err = xe_vma_ops_alloc(&vops, false);
+	if (err) {
+		fence = ERR_PTR(err);
+		goto free_ops;
+	}
+
+	fence = ops_execute(vm, &vops);
+
+free_ops:
+	list_for_each_entry_safe(op, next_op, &vops.list, link) {
+		list_del(&op->link);
+		kfree(op);
+	}
+	xe_vma_ops_fini(&vops);
+
+	return fence;
+}
+
 static void xe_vma_free(struct xe_vma *vma)
 {
 	if (xe_vma_is_userptr(vma))
@@ -2516,6 +2594,8 @@ static void op_trace(struct xe_vma_op *op)
 	case DRM_GPUVA_OP_PREFETCH:
 		trace_xe_vma_bind(gpuva_to_vma(op->base.prefetch.va));
 		break;
+	case DRM_GPUVA_OP_USER:
+		break;
 	default:
 		XE_WARN_ON("NOT POSSIBLE");
 	}
diff --git a/drivers/gpu/drm/xe/xe_vm.h b/drivers/gpu/drm/xe/xe_vm.h
index 1a5aed678214..8bd921b33090 100644
--- a/drivers/gpu/drm/xe/xe_vm.h
+++ b/drivers/gpu/drm/xe/xe_vm.h
@@ -22,6 +22,7 @@ struct ttm_validate_buffer;
 struct xe_exec_queue;
 struct xe_file;
 struct xe_sync_entry;
+struct xe_svm_range;
 struct drm_exec;
 
 struct xe_vm *xe_vm_create(struct xe_device *xe, u32 flags);
@@ -217,6 +218,10 @@ int xe_vm_userptr_check_repin(struct xe_vm *vm);
 int xe_vm_rebind(struct xe_vm *vm, bool rebind_worker);
 struct dma_fence *xe_vma_rebind(struct xe_vm *vm, struct xe_vma *vma,
 				u8 tile_mask);
+struct dma_fence *xe_vm_range_rebind(struct xe_vm *vm,
+				     struct xe_vma *vma,
+				     struct xe_svm_range *range,
+				     u8 tile_mask);
 
 int xe_vm_invalidate_vma(struct xe_vma *vma);
 
diff --git a/drivers/gpu/drm/xe/xe_vm_types.h b/drivers/gpu/drm/xe/xe_vm_types.h
index bd1c0e368238..b736e53779d2 100644
--- a/drivers/gpu/drm/xe/xe_vm_types.h
+++ b/drivers/gpu/drm/xe/xe_vm_types.h
@@ -19,6 +19,7 @@
 #include "xe_range_fence.h"
 
 struct xe_bo;
+struct xe_svm_range;
 struct xe_sync_entry;
 struct xe_user_fence;
 struct xe_vm;
@@ -334,6 +335,14 @@ struct xe_vma_op_prefetch {
 	u32 region;
 };
 
+/** struct xe_vma_op_map_range - VMA map range operation */
+struct xe_vma_op_map_range {
+	/** @vma: VMA to map (system allocator VMA) */
+	struct xe_vma *vma;
+	/** @range: SVM range to map */
+	struct xe_svm_range *range;
+};
+
 /** enum xe_vma_op_flags - flags for VMA operation */
 enum xe_vma_op_flags {
 	/** @XE_VMA_OP_COMMITTED: VMA operation committed */
@@ -344,6 +353,12 @@ enum xe_vma_op_flags {
 	XE_VMA_OP_NEXT_COMMITTED	= BIT(2),
 };
 
+/** enum xe_vma_subop - VMA sub-operation */
+enum xe_vma_subop {
+	/** @XE_VMA_SUBOP_MAP_RANGE: Map range */
+	XE_VMA_SUBOP_MAP_RANGE,
+};
+
 /** struct xe_vma_op - VMA operation */
 struct xe_vma_op {
 	/** @base: GPUVA base operation */
@@ -352,6 +367,8 @@ struct xe_vma_op {
 	struct list_head link;
 	/** @flags: operation flags */
 	enum xe_vma_op_flags flags;
+	/** @subop: user defined sub-operation */
+	enum xe_vma_subop subop;
 	/** @tile_mask: Tile mask for operation */
 	u8 tile_mask;
 
@@ -362,6 +379,8 @@ struct xe_vma_op {
 		struct xe_vma_op_remap remap;
 		/** @prefetch: VMA prefetch operation specific data */
 		struct xe_vma_op_prefetch prefetch;
+		/** @map: VMA map range operation specific data */
+		struct xe_vma_op_map_range map_range;
 	};
 };
 
-- 
2.34.1



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