drm/amdgpu: remove amdgpu_vm_pt

Page table entries are now in embedded in VM BO, so
we do not need struct amdgpu_vm_pt. This patch replaces
struct amdgpu_vm_pt with struct amdgpu_vm_bo_base.
Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -356,7 +356,7 @@ static int amdgpu_amdkfd_validate_vm_bo(void *_unused, struct amdgpu_bo *bo)
  */
 static int vm_validate_pt_pd_bos(struct amdgpu_vm *vm)
 {
-	struct amdgpu_bo *pd = vm->root.base.bo;
+	struct amdgpu_bo *pd = vm->root.bo;
 	struct amdgpu_device *adev = amdgpu_ttm_adev(pd->tbo.bdev);
 	int ret;
 
@@ -372,7 +372,7 @@ static int vm_validate_pt_pd_bos(struct amdgpu_vm *vm)
 		return ret;
 	}
 
-	vm->pd_phys_addr = amdgpu_gmc_pd_addr(vm->root.base.bo);
+	vm->pd_phys_addr = amdgpu_gmc_pd_addr(vm->root.bo);
 
 	if (vm->use_cpu_for_update) {
 		ret = amdgpu_bo_kmap(pd, NULL);
@@ -387,7 +387,7 @@ static int vm_validate_pt_pd_bos(struct amdgpu_vm *vm)
 
 static int vm_update_pds(struct amdgpu_vm *vm, struct amdgpu_sync *sync)
 {
-	struct amdgpu_bo *pd = vm->root.base.bo;
+	struct amdgpu_bo *pd = vm->root.bo;
 	struct amdgpu_device *adev = amdgpu_ttm_adev(pd->tbo.bdev);
 	int ret;
 
@@ -1153,7 +1153,7 @@ static int process_sync_pds_resv(struct amdkfd_process_info *process_info,
 
 	list_for_each_entry(peer_vm, &process_info->vm_list_head,
 			    vm_list_node) {
-		struct amdgpu_bo *pd = peer_vm->root.base.bo;
+		struct amdgpu_bo *pd = peer_vm->root.bo;
 
 		ret = amdgpu_sync_resv(NULL, sync, pd->tbo.base.resv,
 				       AMDGPU_SYNC_NE_OWNER,
@@ -1220,7 +1220,7 @@ static int init_kfd_vm(struct amdgpu_vm *vm, void **process_info,
 	vm->process_info = *process_info;
 
 	/* Validate page directory and attach eviction fence */
-	ret = amdgpu_bo_reserve(vm->root.base.bo, true);
+	ret = amdgpu_bo_reserve(vm->root.bo, true);
 	if (ret)
 		goto reserve_pd_fail;
 	ret = vm_validate_pt_pd_bos(vm);
@@ -1228,16 +1228,16 @@ static int init_kfd_vm(struct amdgpu_vm *vm, void **process_info,
 		pr_err("validate_pt_pd_bos() failed\n");
 		goto validate_pd_fail;
 	}
-	ret = amdgpu_bo_sync_wait(vm->root.base.bo,
+	ret = amdgpu_bo_sync_wait(vm->root.bo,
 				  AMDGPU_FENCE_OWNER_KFD, false);
 	if (ret)
 		goto wait_pd_fail;
-	ret = dma_resv_reserve_shared(vm->root.base.bo->tbo.base.resv, 1);
+	ret = dma_resv_reserve_shared(vm->root.bo->tbo.base.resv, 1);
 	if (ret)
 		goto reserve_shared_fail;
-	amdgpu_bo_fence(vm->root.base.bo,
+	amdgpu_bo_fence(vm->root.bo,
 			&vm->process_info->eviction_fence->base, true);
-	amdgpu_bo_unreserve(vm->root.base.bo);
+	amdgpu_bo_unreserve(vm->root.bo);
 
 	/* Update process info */
 	mutex_lock(&vm->process_info->lock);
@@ -1251,7 +1251,7 @@ static int init_kfd_vm(struct amdgpu_vm *vm, void **process_info,
 reserve_shared_fail:
 wait_pd_fail:
 validate_pd_fail:
-	amdgpu_bo_unreserve(vm->root.base.bo);
+	amdgpu_bo_unreserve(vm->root.bo);
 reserve_pd_fail:
 	vm->process_info = NULL;
 	if (info) {
@@ -1306,7 +1306,7 @@ void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
 				    struct amdgpu_vm *vm)
 {
 	struct amdkfd_process_info *process_info = vm->process_info;
-	struct amdgpu_bo *pd = vm->root.base.bo;
+	struct amdgpu_bo *pd = vm->root.bo;
 
 	if (!process_info)
 		return;
@@ -1362,7 +1362,7 @@ void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *drm_priv)
 uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *drm_priv)
 {
 	struct amdgpu_vm *avm = drm_priv_to_vm(drm_priv);
-	struct amdgpu_bo *pd = avm->root.base.bo;
+	struct amdgpu_bo *pd = avm->root.bo;
 	struct amdgpu_device *adev = amdgpu_ttm_adev(pd->tbo.bdev);
 
 	if (adev->asic_type < CHIP_VEGA10)
@@ -2389,7 +2389,7 @@ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *info, struct dma_fence **ef)
 	/* Attach eviction fence to PD / PT BOs */
 	list_for_each_entry(peer_vm, &process_info->vm_list_head,
 			    vm_list_node) {
-		struct amdgpu_bo *bo = peer_vm->root.base.bo;
+		struct amdgpu_bo *bo = peer_vm->root.bo;
 
 		amdgpu_bo_fence(bo, &process_info->eviction_fence->base, true);
 	}

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

@@ -832,7 +832,7 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
 	if (r)
 		return r;
 
-	p->job->vm_pd_addr = amdgpu_gmc_pd_addr(vm->root.base.bo);
+	p->job->vm_pd_addr = amdgpu_gmc_pd_addr(vm->root.bo);
 
 	if (amdgpu_vm_debug) {
 		/* Invalidate all BOs to test for userspace bugs */

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

@@ -1304,11 +1304,11 @@ static int amdgpu_debugfs_vm_info_show(struct seq_file *m, void *unused)
 
 		seq_printf(m, "pid:%d\tProcess:%s ----------\n",
 				vm->task_info.pid, vm->task_info.process_name);
-		r = amdgpu_bo_reserve(vm->root.base.bo, true);
+		r = amdgpu_bo_reserve(vm->root.bo, true);
 		if (r)
 			break;
 		amdgpu_debugfs_vm_bo_info(vm, m);
-		amdgpu_bo_unreserve(vm->root.base.bo);
+		amdgpu_bo_unreserve(vm->root.bo);
 	}
 
 	mutex_unlock(&dev->filelist_mutex);

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

@@ -448,7 +448,7 @@ amdgpu_dma_buf_move_notify(struct dma_buf_attachment *attach)
 
 	for (bo_base = bo->vm_bo; bo_base; bo_base = bo_base->next) {
 		struct amdgpu_vm *vm = bo_base->vm;
-		struct dma_resv *resv = vm->root.base.bo->tbo.base.resv;
+		struct dma_resv *resv = vm->root.bo->tbo.base.resv;
 
 		if (ticket) {
 			/* When we get an error here it means that somebody

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

@@ -69,13 +69,13 @@ void amdgpu_show_fdinfo(struct seq_file *m, struct file *f)
 	dev = PCI_SLOT(adev->pdev->devfn);
 	fn = PCI_FUNC(adev->pdev->devfn);
 
-	ret = amdgpu_bo_reserve(fpriv->vm.root.base.bo, false);
+	ret = amdgpu_bo_reserve(fpriv->vm.root.bo, false);
 	if (ret) {
 		DRM_ERROR("Fail to reserve bo\n");
 		return;
 	}
 	amdgpu_vm_get_memory(&fpriv->vm, &vram_mem, &gtt_mem, &cpu_mem);
-	amdgpu_bo_unreserve(fpriv->vm.root.base.bo);
+	amdgpu_bo_unreserve(fpriv->vm.root.bo);
 	seq_printf(m, "pdev:\t%04x:%02x:%02x.%d\npasid:\t%u\n", domain, bus,
 			dev, fn, fpriv->vm.pasid);
 	seq_printf(m, "vram mem:\t%llu kB\n", vram_mem/1024UL);

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

@@ -170,7 +170,7 @@ static int amdgpu_gem_object_open(struct drm_gem_object *obj,
 		return -EPERM;
 
 	if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID &&
-	    abo->tbo.base.resv != vm->root.base.bo->tbo.base.resv)
+	    abo->tbo.base.resv != vm->root.bo->tbo.base.resv)
 		return -EPERM;
 
 	r = amdgpu_bo_reserve(abo, false);
@@ -320,11 +320,11 @@ int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
 	}
 
 	if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
-		r = amdgpu_bo_reserve(vm->root.base.bo, false);
+		r = amdgpu_bo_reserve(vm->root.bo, false);
 		if (r)
 			return r;
 
-		resv = vm->root.base.bo->tbo.base.resv;
+		resv = vm->root.bo->tbo.base.resv;
 	}
 
 	initial_domain = (u32)(0xffffffff & args->in.domains);
@@ -353,9 +353,9 @@ int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
 		if (!r) {
 			struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
 
-			abo->parent = amdgpu_bo_ref(vm->root.base.bo);
+			abo->parent = amdgpu_bo_ref(vm->root.bo);
 		}
-		amdgpu_bo_unreserve(vm->root.base.bo);
+		amdgpu_bo_unreserve(vm->root.bo);
 	}
 	if (r)
 		return r;
@@ -841,7 +841,7 @@ int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
 		}
 		for (base = robj->vm_bo; base; base = base->next)
 			if (amdgpu_xgmi_same_hive(amdgpu_ttm_adev(robj->tbo.bdev),
-				amdgpu_ttm_adev(base->vm->root.base.bo->tbo.bdev))) {
+				amdgpu_ttm_adev(base->vm->root.bo->tbo.bdev))) {
 				r = -EINVAL;
 				amdgpu_bo_unreserve(robj);
 				goto out;

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

@@ -1262,7 +1262,7 @@ void amdgpu_driver_postclose_kms(struct drm_device *dev,
 	}
 
 	pasid = fpriv->vm.pasid;
-	pd = amdgpu_bo_ref(fpriv->vm.root.base.bo);
+	pd = amdgpu_bo_ref(fpriv->vm.root.bo);
 
 	amdgpu_ctx_mgr_fini(&fpriv->ctx_mgr);
 	amdgpu_vm_fini(adev, &fpriv->vm);

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

@@ -126,7 +126,7 @@ struct amdgpu_bo_user {
 struct amdgpu_bo_vm {
 	struct amdgpu_bo		bo;
 	struct amdgpu_bo		*shadow;
-	struct amdgpu_vm_pt             entries[];
+	struct amdgpu_vm_bo_base        entries[];
 };
 
 static inline struct amdgpu_bo *ttm_to_amdgpu_bo(struct ttm_buffer_object *tbo)

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

@@ -152,13 +152,6 @@ struct amdgpu_vm_bo_base {
 	bool				moved;
 };
 
-struct amdgpu_vm_pt {
-	struct amdgpu_vm_bo_base	base;
-
-	/* array of page tables, one for each directory entry */
-	struct amdgpu_vm_pt		*entries;
-};
-
 /* provided by hw blocks that can write ptes, e.g., sdma */
 struct amdgpu_vm_pte_funcs {
 	/* number of dw to reserve per operation */
@@ -284,7 +277,7 @@ struct amdgpu_vm {
 	struct list_head        done;
 
 	/* contains the page directory */
-	struct amdgpu_vm_pt     root;
+	struct amdgpu_vm_bo_base     root;
 	struct dma_fence	*last_update;
 
 	/* Scheduler entities for page table updates */

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

@@ -112,7 +112,7 @@ static int amdgpu_vm_sdma_commit(struct amdgpu_vm_update_params *p,
 		swap(p->vm->last_unlocked, f);
 		dma_fence_put(tmp);
 	} else {
-		amdgpu_bo_fence(p->vm->root.base.bo, f, true);
+		amdgpu_bo_fence(p->vm->root.bo, f, true);
 	}
 
 	if (fence && !p->immediate)

drivers/gpu/drm/amd/amdkfd/kfd_svm.c

@@ -1273,7 +1273,7 @@ static int svm_range_reserve_bos(struct svm_validate_context *ctx)
 		adev = (struct amdgpu_device *)pdd->dev->kgd;
 		vm = drm_priv_to_vm(pdd->drm_priv);
 
-		ctx->tv[gpuidx].bo = &vm->root.base.bo->tbo;
+		ctx->tv[gpuidx].bo = &vm->root.bo->tbo;
 		ctx->tv[gpuidx].num_shared = 4;
 		list_add(&ctx->tv[gpuidx].head, &ctx->validate_list);
 	}