drm/amdgpu: add support for per VM BOs v2

Per VM BOs are handled like VM PDs and PTs. They are always valid and don't
need to be specified in the BO lists.

v2: validate PDs/PTs first
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c

@@ -822,7 +822,7 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p)
 
 	}
 
-	r = amdgpu_vm_clear_moved(adev, vm, &p->job->sync);
+	r = amdgpu_vm_handle_moved(adev, vm, &p->job->sync);
 
 	if (amdgpu_vm_debug && p->bo_list) {
 		/* Invalidate all BOs to test for userspace bugs */

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

@@ -189,14 +189,18 @@ int amdgpu_vm_validate_pt_bos(struct amdgpu_device *adev, struct amdgpu_vm *vm,
 			spin_unlock(&glob->lru_lock);
 		}
 
-		if (vm->use_cpu_for_update) {
+		if (bo->tbo.type == ttm_bo_type_kernel &&
+		    vm->use_cpu_for_update) {
 			r = amdgpu_bo_kmap(bo, NULL);
 			if (r)
 				return r;
 		}
 
 		spin_lock(&vm->status_lock);
-		list_move(&bo_base->vm_status, &vm->relocated);
+		if (bo->tbo.type != ttm_bo_type_kernel)
+			list_move(&bo_base->vm_status, &vm->moved);
+		else
+			list_move(&bo_base->vm_status, &vm->relocated);
 	}
 	spin_unlock(&vm->status_lock);
 
@@ -1985,20 +1989,23 @@ int amdgpu_vm_clear_freed(struct amdgpu_device *adev,
 }
 
 /**
- * amdgpu_vm_clear_moved - clear moved BOs in the PT
+ * amdgpu_vm_handle_moved - handle moved BOs in the PT
  *
  * @adev: amdgpu_device pointer
  * @vm: requested vm
+ * @sync: sync object to add fences to
  *
- * Make sure all moved BOs are cleared in the PT.
+ * Make sure all BOs which are moved are updated in the PTs.
  * Returns 0 for success.
  *
- * PTs have to be reserved and mutex must be locked!
+ * PTs have to be reserved!
  */
-int amdgpu_vm_clear_moved(struct amdgpu_device *adev, struct amdgpu_vm *vm,
-			    struct amdgpu_sync *sync)
+int amdgpu_vm_handle_moved(struct amdgpu_device *adev,
+			   struct amdgpu_vm *vm,
+			   struct amdgpu_sync *sync)
 {
 	struct amdgpu_bo_va *bo_va = NULL;
+	bool clear;
 	int r = 0;
 
 	spin_lock(&vm->status_lock);
@@ -2007,7 +2014,10 @@ int amdgpu_vm_clear_moved(struct amdgpu_device *adev, struct amdgpu_vm *vm,
 			struct amdgpu_bo_va, base.vm_status);
 		spin_unlock(&vm->status_lock);
 
-		r = amdgpu_vm_bo_update(adev, bo_va, true);
+		/* Per VM BOs never need to bo cleared in the page tables */
+		clear = bo_va->base.bo->tbo.resv != vm->root.base.bo->tbo.resv;
+
+		r = amdgpu_vm_bo_update(adev, bo_va, clear);
 		if (r)
 			return r;
 
@@ -2059,6 +2069,37 @@ struct amdgpu_bo_va *amdgpu_vm_bo_add(struct amdgpu_device *adev,
 	return bo_va;
 }
 
+
+/**
+ * amdgpu_vm_bo_insert_mapping - insert a new mapping
+ *
+ * @adev: amdgpu_device pointer
+ * @bo_va: bo_va to store the address
+ * @mapping: the mapping to insert
+ *
+ * Insert a new mapping into all structures.
+ */
+static void amdgpu_vm_bo_insert_map(struct amdgpu_device *adev,
+				    struct amdgpu_bo_va *bo_va,
+				    struct amdgpu_bo_va_mapping *mapping)
+{
+	struct amdgpu_vm *vm = bo_va->base.vm;
+	struct amdgpu_bo *bo = bo_va->base.bo;
+
+	list_add(&mapping->list, &bo_va->invalids);
+	amdgpu_vm_it_insert(mapping, &vm->va);
+
+	if (mapping->flags & AMDGPU_PTE_PRT)
+		amdgpu_vm_prt_get(adev);
+
+	if (bo && bo->tbo.resv == vm->root.base.bo->tbo.resv) {
+		spin_lock(&vm->status_lock);
+		list_move(&bo_va->base.vm_status, &vm->moved);
+		spin_unlock(&vm->status_lock);
+	}
+	trace_amdgpu_vm_bo_map(bo_va, mapping);
+}
+
 /**
  * amdgpu_vm_bo_map - map bo inside a vm
  *
@@ -2110,18 +2151,12 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
 	if (!mapping)
 		return -ENOMEM;
 
-	INIT_LIST_HEAD(&mapping->list);
 	mapping->start = saddr;
 	mapping->last = eaddr;
 	mapping->offset = offset;
 	mapping->flags = flags;
 
-	list_add(&mapping->list, &bo_va->invalids);
-	amdgpu_vm_it_insert(mapping, &vm->va);
-
-	if (flags & AMDGPU_PTE_PRT)
-		amdgpu_vm_prt_get(adev);
-	trace_amdgpu_vm_bo_map(bo_va, mapping);
+	amdgpu_vm_bo_insert_map(adev, bo_va, mapping);
 
 	return 0;
 }
@@ -2148,7 +2183,6 @@ int amdgpu_vm_bo_replace_map(struct amdgpu_device *adev,
 {
 	struct amdgpu_bo_va_mapping *mapping;
 	struct amdgpu_bo *bo = bo_va->base.bo;
-	struct amdgpu_vm *vm = bo_va->base.vm;
 	uint64_t eaddr;
 	int r;
 
@@ -2182,12 +2216,7 @@ int amdgpu_vm_bo_replace_map(struct amdgpu_device *adev,
 	mapping->offset = offset;
 	mapping->flags = flags;
 
-	list_add(&mapping->list, &bo_va->invalids);
-	amdgpu_vm_it_insert(mapping, &vm->va);
-
-	if (flags & AMDGPU_PTE_PRT)
-		amdgpu_vm_prt_get(adev);
-	trace_amdgpu_vm_bo_map(bo_va, mapping);
+	amdgpu_vm_bo_insert_map(adev, bo_va, mapping);
 
 	return 0;
 }
@@ -2402,7 +2431,11 @@ void amdgpu_vm_bo_invalidate(struct amdgpu_device *adev,
 		bo_base->moved = true;
 		if (evicted && bo->tbo.resv == vm->root.base.bo->tbo.resv) {
 			spin_lock(&bo_base->vm->status_lock);
-			list_move(&bo_base->vm_status, &vm->evicted);
+			if (bo->tbo.type == ttm_bo_type_kernel)
+				list_move(&bo_base->vm_status, &vm->evicted);
+			else
+				list_move_tail(&bo_base->vm_status,
+					       &vm->evicted);
 			spin_unlock(&bo_base->vm->status_lock);
 			continue;
 		}

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h

@@ -249,8 +249,9 @@ int amdgpu_vm_update_directories(struct amdgpu_device *adev,
 int amdgpu_vm_clear_freed(struct amdgpu_device *adev,
 			  struct amdgpu_vm *vm,
 			  struct dma_fence **fence);
-int amdgpu_vm_clear_moved(struct amdgpu_device *adev, struct amdgpu_vm *vm,
-			  struct amdgpu_sync *sync);
+int amdgpu_vm_handle_moved(struct amdgpu_device *adev,
+			   struct amdgpu_vm *vm,
+			   struct amdgpu_sync *sync);
 int amdgpu_vm_bo_update(struct amdgpu_device *adev,
 			struct amdgpu_bo_va *bo_va,
 			bool clear);