Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1007 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
new file mode 100644
index 000000000..a1b15d0d6
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -0,0 +1,1007 @@
+/*
+ * Copyright 2008 Advanced Micro Devices, Inc.
+ * Copyright 2008 Red Hat Inc.
+ * Copyright 2009 Jerome Glisse.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Dave Airlie
+ *          Alex Deucher
+ *          Jerome Glisse
+ */
+#include <linux/ktime.h>
+#include <linux/module.h>
+#include <linux/pagemap.h>
+#include <linux/pci.h>
+#include <linux/dma-buf.h>
+
+#include <drm/amdgpu_drm.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_exec.h>
+#include <drm/drm_gem_ttm_helper.h>
+#include <drm/ttm/ttm_tt.h>
+
+#include "amdgpu.h"
+#include "amdgpu_display.h"
+#include "amdgpu_dma_buf.h"
+#include "amdgpu_hmm.h"
+#include "amdgpu_xgmi.h"
+
+static const struct drm_gem_object_funcs amdgpu_gem_object_funcs;
+
+static vm_fault_t amdgpu_gem_fault(struct vm_fault *vmf)
+{
+	struct ttm_buffer_object *bo = vmf->vma->vm_private_data;
+	struct drm_device *ddev = bo->base.dev;
+	vm_fault_t ret;
+	int idx;
+
+	ret = ttm_bo_vm_reserve(bo, vmf);
+	if (ret)
+		return ret;
+
+	if (drm_dev_enter(ddev, &idx)) {
+		ret = amdgpu_bo_fault_reserve_notify(bo);
+		if (ret) {
+			drm_dev_exit(idx);
+			goto unlock;
+		}
+
+		ret = ttm_bo_vm_fault_reserved(vmf, vmf->vma->vm_page_prot,
+					       TTM_BO_VM_NUM_PREFAULT);
+
+		drm_dev_exit(idx);
+	} else {
+		ret = ttm_bo_vm_dummy_page(vmf, vmf->vma->vm_page_prot);
+	}
+	if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT))
+		return ret;
+
+unlock:
+	dma_resv_unlock(bo->base.resv);
+	return ret;
+}
+
+static const struct vm_operations_struct amdgpu_gem_vm_ops = {
+	.fault = amdgpu_gem_fault,
+	.open = ttm_bo_vm_open,
+	.close = ttm_bo_vm_close,
+	.access = ttm_bo_vm_access
+};
+
+static void amdgpu_gem_object_free(struct drm_gem_object *gobj)
+{
+	struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj);
+
+	if (robj) {
+		amdgpu_hmm_unregister(robj);
+		amdgpu_bo_unref(&robj);
+	}
+}
+
+int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
+			     int alignment, u32 initial_domain,
+			     u64 flags, enum ttm_bo_type type,
+			     struct dma_resv *resv,
+			     struct drm_gem_object **obj, int8_t xcp_id_plus1)
+{
+	struct amdgpu_bo *bo;
+	struct amdgpu_bo_user *ubo;
+	struct amdgpu_bo_param bp;
+	int r;
+
+	memset(&bp, 0, sizeof(bp));
+	*obj = NULL;
+
+	bp.size = size;
+	bp.byte_align = alignment;
+	bp.type = type;
+	bp.resv = resv;
+	bp.preferred_domain = initial_domain;
+	bp.flags = flags;
+	bp.domain = initial_domain;
+	bp.bo_ptr_size = sizeof(struct amdgpu_bo);
+	bp.xcp_id_plus1 = xcp_id_plus1;
+
+	r = amdgpu_bo_create_user(adev, &bp, &ubo);
+	if (r)
+		return r;
+
+	bo = &ubo->bo;
+	*obj = &bo->tbo.base;
+	(*obj)->funcs = &amdgpu_gem_object_funcs;
+
+	return 0;
+}
+
+void amdgpu_gem_force_release(struct amdgpu_device *adev)
+{
+	struct drm_device *ddev = adev_to_drm(adev);
+	struct drm_file *file;
+
+	mutex_lock(&ddev->filelist_mutex);
+
+	list_for_each_entry(file, &ddev->filelist, lhead) {
+		struct drm_gem_object *gobj;
+		int handle;
+
+		WARN_ONCE(1, "Still active user space clients!\n");
+		spin_lock(&file->table_lock);
+		idr_for_each_entry(&file->object_idr, gobj, handle) {
+			WARN_ONCE(1, "And also active allocations!\n");
+			drm_gem_object_put(gobj);
+		}
+		idr_destroy(&file->object_idr);
+		spin_unlock(&file->table_lock);
+	}
+
+	mutex_unlock(&ddev->filelist_mutex);
+}
+
+/*
+ * Call from drm_gem_handle_create which appear in both new and open ioctl
+ * case.
+ */
+static int amdgpu_gem_object_open(struct drm_gem_object *obj,
+				  struct drm_file *file_priv)
+{
+	struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj);
+	struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
+	struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
+	struct amdgpu_vm *vm = &fpriv->vm;
+	struct amdgpu_bo_va *bo_va;
+	struct mm_struct *mm;
+	int r;
+
+	mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm);
+	if (mm && mm != current->mm)
+		return -EPERM;
+
+	if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID &&
+	    abo->tbo.base.resv != vm->root.bo->tbo.base.resv)
+		return -EPERM;
+
+	r = amdgpu_bo_reserve(abo, false);
+	if (r)
+		return r;
+
+	bo_va = amdgpu_vm_bo_find(vm, abo);
+	if (!bo_va)
+		bo_va = amdgpu_vm_bo_add(adev, vm, abo);
+	else
+		++bo_va->ref_count;
+	amdgpu_bo_unreserve(abo);
+	return 0;
+}
+
+static void amdgpu_gem_object_close(struct drm_gem_object *obj,
+				    struct drm_file *file_priv)
+{
+	struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
+	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+	struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
+	struct amdgpu_vm *vm = &fpriv->vm;
+
+	struct dma_fence *fence = NULL;
+	struct amdgpu_bo_va *bo_va;
+	struct drm_exec exec;
+	long r;
+
+	drm_exec_init(&exec, DRM_EXEC_IGNORE_DUPLICATES);
+	drm_exec_until_all_locked(&exec) {
+		r = drm_exec_prepare_obj(&exec, &bo->tbo.base, 1);
+		drm_exec_retry_on_contention(&exec);
+		if (unlikely(r))
+			goto out_unlock;
+
+		r = amdgpu_vm_lock_pd(vm, &exec, 0);
+		drm_exec_retry_on_contention(&exec);
+		if (unlikely(r))
+			goto out_unlock;
+	}
+
+	bo_va = amdgpu_vm_bo_find(vm, bo);
+	if (!bo_va || --bo_va->ref_count)
+		goto out_unlock;
+
+	amdgpu_vm_bo_del(adev, bo_va);
+	if (!amdgpu_vm_ready(vm))
+		goto out_unlock;
+
+	r = amdgpu_vm_clear_freed(adev, vm, &fence);
+	if (unlikely(r < 0))
+		dev_err(adev->dev, "failed to clear page "
+			"tables on GEM object close (%ld)\n", r);
+	if (r || !fence)
+		goto out_unlock;
+
+	amdgpu_bo_fence(bo, fence, true);
+	dma_fence_put(fence);
+
+out_unlock:
+	if (r)
+		dev_err(adev->dev, "leaking bo va (%ld)\n", r);
+	drm_exec_fini(&exec);
+}
+
+static int amdgpu_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
+{
+	struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
+
+	if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm))
+		return -EPERM;
+	if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
+		return -EPERM;
+
+	/* Workaround for Thunk bug creating PROT_NONE,MAP_PRIVATE mappings
+	 * for debugger access to invisible VRAM. Should have used MAP_SHARED
+	 * instead. Clearing VM_MAYWRITE prevents the mapping from ever
+	 * becoming writable and makes is_cow_mapping(vm_flags) false.
+	 */
+	if (is_cow_mapping(vma->vm_flags) &&
+	    !(vma->vm_flags & VM_ACCESS_FLAGS))
+		vm_flags_clear(vma, VM_MAYWRITE);
+
+	return drm_gem_ttm_mmap(obj, vma);
+}
+
+static const struct drm_gem_object_funcs amdgpu_gem_object_funcs = {
+	.free = amdgpu_gem_object_free,
+	.open = amdgpu_gem_object_open,
+	.close = amdgpu_gem_object_close,
+	.export = amdgpu_gem_prime_export,
+	.vmap = drm_gem_ttm_vmap,
+	.vunmap = drm_gem_ttm_vunmap,
+	.mmap = amdgpu_gem_object_mmap,
+	.vm_ops = &amdgpu_gem_vm_ops,
+};
+
+/*
+ * GEM ioctls.
+ */
+int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
+			    struct drm_file *filp)
+{
+	struct amdgpu_device *adev = drm_to_adev(dev);
+	struct amdgpu_fpriv *fpriv = filp->driver_priv;
+	struct amdgpu_vm *vm = &fpriv->vm;
+	union drm_amdgpu_gem_create *args = data;
+	uint64_t flags = args->in.domain_flags;
+	uint64_t size = args->in.bo_size;
+	struct dma_resv *resv = NULL;
+	struct drm_gem_object *gobj;
+	uint32_t handle, initial_domain;
+	int r;
+
+	/* reject DOORBELLs until userspace code to use it is available */
+	if (args->in.domains & AMDGPU_GEM_DOMAIN_DOORBELL)
+		return -EINVAL;
+
+	/* reject invalid gem flags */
+	if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
+		      AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
+		      AMDGPU_GEM_CREATE_CPU_GTT_USWC |
+		      AMDGPU_GEM_CREATE_VRAM_CLEARED |
+		      AMDGPU_GEM_CREATE_VM_ALWAYS_VALID |
+		      AMDGPU_GEM_CREATE_EXPLICIT_SYNC |
+		      AMDGPU_GEM_CREATE_ENCRYPTED |
+		      AMDGPU_GEM_CREATE_DISCARDABLE))
+		return -EINVAL;
+
+	/* reject invalid gem domains */
+	if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK)
+		return -EINVAL;
+
+	if (!amdgpu_is_tmz(adev) && (flags & AMDGPU_GEM_CREATE_ENCRYPTED)) {
+		DRM_NOTE_ONCE("Cannot allocate secure buffer since TMZ is disabled\n");
+		return -EINVAL;
+	}
+
+	/* create a gem object to contain this object in */
+	if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
+	    AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
+		if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
+			/* if gds bo is created from user space, it must be
+			 * passed to bo list
+			 */
+			DRM_ERROR("GDS bo cannot be per-vm-bo\n");
+			return -EINVAL;
+		}
+		flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
+	}
+
+	if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
+		r = amdgpu_bo_reserve(vm->root.bo, false);
+		if (r)
+			return r;
+
+		resv = vm->root.bo->tbo.base.resv;
+	}
+
+	initial_domain = (u32)(0xffffffff & args->in.domains);
+retry:
+	r = amdgpu_gem_object_create(adev, size, args->in.alignment,
+				     initial_domain,
+				     flags, ttm_bo_type_device, resv, &gobj, fpriv->xcp_id + 1);
+	if (r && r != -ERESTARTSYS) {
+		if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
+			flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
+			goto retry;
+		}
+
+		if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
+			initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
+			goto retry;
+		}
+		DRM_DEBUG("Failed to allocate GEM object (%llu, %d, %llu, %d)\n",
+				size, initial_domain, args->in.alignment, r);
+	}
+
+	if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
+		if (!r) {
+			struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
+
+			abo->parent = amdgpu_bo_ref(vm->root.bo);
+		}
+		amdgpu_bo_unreserve(vm->root.bo);
+	}
+	if (r)
+		return r;
+
+	r = drm_gem_handle_create(filp, gobj, &handle);
+	/* drop reference from allocate - handle holds it now */
+	drm_gem_object_put(gobj);
+	if (r)
+		return r;
+
+	memset(args, 0, sizeof(*args));
+	args->out.handle = handle;
+	return 0;
+}
+
+int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
+			     struct drm_file *filp)
+{
+	struct ttm_operation_ctx ctx = { true, false };
+	struct amdgpu_device *adev = drm_to_adev(dev);
+	struct drm_amdgpu_gem_userptr *args = data;
+	struct amdgpu_fpriv *fpriv = filp->driver_priv;
+	struct drm_gem_object *gobj;
+	struct hmm_range *range;
+	struct amdgpu_bo *bo;
+	uint32_t handle;
+	int r;
+
+	args->addr = untagged_addr(args->addr);
+
+	if (offset_in_page(args->addr | args->size))
+		return -EINVAL;
+
+	/* reject unknown flag values */
+	if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
+	    AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
+	    AMDGPU_GEM_USERPTR_REGISTER))
+		return -EINVAL;
+
+	if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
+	     !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
+
+		/* if we want to write to it we must install a MMU notifier */
+		return -EACCES;
+	}
+
+	/* create a gem object to contain this object in */
+	r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU,
+				     0, ttm_bo_type_device, NULL, &gobj, fpriv->xcp_id + 1);
+	if (r)
+		return r;
+
+	bo = gem_to_amdgpu_bo(gobj);
+	bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
+	bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
+	r = amdgpu_ttm_tt_set_userptr(&bo->tbo, args->addr, args->flags);
+	if (r)
+		goto release_object;
+
+	r = amdgpu_hmm_register(bo, args->addr);
+	if (r)
+		goto release_object;
+
+	if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
+		r = amdgpu_ttm_tt_get_user_pages(bo, bo->tbo.ttm->pages,
+						 &range);
+		if (r)
+			goto release_object;
+
+		r = amdgpu_bo_reserve(bo, true);
+		if (r)
+			goto user_pages_done;
+
+		amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
+		r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
+		amdgpu_bo_unreserve(bo);
+		if (r)
+			goto user_pages_done;
+	}
+
+	r = drm_gem_handle_create(filp, gobj, &handle);
+	if (r)
+		goto user_pages_done;
+
+	args->handle = handle;
+
+user_pages_done:
+	if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE)
+		amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm, range);
+
+release_object:
+	drm_gem_object_put(gobj);
+
+	return r;
+}
+
+int amdgpu_mode_dumb_mmap(struct drm_file *filp,
+			  struct drm_device *dev,
+			  uint32_t handle, uint64_t *offset_p)
+{
+	struct drm_gem_object *gobj;
+	struct amdgpu_bo *robj;
+
+	gobj = drm_gem_object_lookup(filp, handle);
+	if (!gobj)
+		return -ENOENT;
+
+	robj = gem_to_amdgpu_bo(gobj);
+	if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
+	    (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
+		drm_gem_object_put(gobj);
+		return -EPERM;
+	}
+	*offset_p = amdgpu_bo_mmap_offset(robj);
+	drm_gem_object_put(gobj);
+	return 0;
+}
+
+int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
+			  struct drm_file *filp)
+{
+	union drm_amdgpu_gem_mmap *args = data;
+	uint32_t handle = args->in.handle;
+
+	memset(args, 0, sizeof(*args));
+	return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
+}
+
+/**
+ * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
+ *
+ * @timeout_ns: timeout in ns
+ *
+ * Calculate the timeout in jiffies from an absolute timeout in ns.
+ */
+unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
+{
+	unsigned long timeout_jiffies;
+	ktime_t timeout;
+
+	/* clamp timeout if it's to large */
+	if (((int64_t)timeout_ns) < 0)
+		return MAX_SCHEDULE_TIMEOUT;
+
+	timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
+	if (ktime_to_ns(timeout) < 0)
+		return 0;
+
+	timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
+	/*  clamp timeout to avoid unsigned-> signed overflow */
+	if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT)
+		return MAX_SCHEDULE_TIMEOUT - 1;
+
+	return timeout_jiffies;
+}
+
+int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
+			      struct drm_file *filp)
+{
+	union drm_amdgpu_gem_wait_idle *args = data;
+	struct drm_gem_object *gobj;
+	struct amdgpu_bo *robj;
+	uint32_t handle = args->in.handle;
+	unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
+	int r = 0;
+	long ret;
+
+	gobj = drm_gem_object_lookup(filp, handle);
+	if (!gobj)
+		return -ENOENT;
+
+	robj = gem_to_amdgpu_bo(gobj);
+	ret = dma_resv_wait_timeout(robj->tbo.base.resv, DMA_RESV_USAGE_READ,
+				    true, timeout);
+
+	/* ret == 0 means not signaled,
+	 * ret > 0 means signaled
+	 * ret < 0 means interrupted before timeout
+	 */
+	if (ret >= 0) {
+		memset(args, 0, sizeof(*args));
+		args->out.status = (ret == 0);
+	} else
+		r = ret;
+
+	drm_gem_object_put(gobj);
+	return r;
+}
+
+int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
+				struct drm_file *filp)
+{
+	struct drm_amdgpu_gem_metadata *args = data;
+	struct drm_gem_object *gobj;
+	struct amdgpu_bo *robj;
+	int r = -1;
+
+	DRM_DEBUG("%d\n", args->handle);
+	gobj = drm_gem_object_lookup(filp, args->handle);
+	if (gobj == NULL)
+		return -ENOENT;
+	robj = gem_to_amdgpu_bo(gobj);
+
+	r = amdgpu_bo_reserve(robj, false);
+	if (unlikely(r != 0))
+		goto out;
+
+	if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
+		amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
+		r = amdgpu_bo_get_metadata(robj, args->data.data,
+					   sizeof(args->data.data),
+					   &args->data.data_size_bytes,
+					   &args->data.flags);
+	} else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
+		if (args->data.data_size_bytes > sizeof(args->data.data)) {
+			r = -EINVAL;
+			goto unreserve;
+		}
+		r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
+		if (!r)
+			r = amdgpu_bo_set_metadata(robj, args->data.data,
+						   args->data.data_size_bytes,
+						   args->data.flags);
+	}
+
+unreserve:
+	amdgpu_bo_unreserve(robj);
+out:
+	drm_gem_object_put(gobj);
+	return r;
+}
+
+/**
+ * amdgpu_gem_va_update_vm -update the bo_va in its VM
+ *
+ * @adev: amdgpu_device pointer
+ * @vm: vm to update
+ * @bo_va: bo_va to update
+ * @operation: map, unmap or clear
+ *
+ * Update the bo_va directly after setting its address. Errors are not
+ * vital here, so they are not reported back to userspace.
+ */
+static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
+				    struct amdgpu_vm *vm,
+				    struct amdgpu_bo_va *bo_va,
+				    uint32_t operation)
+{
+	int r;
+
+	if (!amdgpu_vm_ready(vm))
+		return;
+
+	r = amdgpu_vm_clear_freed(adev, vm, NULL);
+	if (r)
+		goto error;
+
+	if (operation == AMDGPU_VA_OP_MAP ||
+	    operation == AMDGPU_VA_OP_REPLACE) {
+		r = amdgpu_vm_bo_update(adev, bo_va, false);
+		if (r)
+			goto error;
+	}
+
+	r = amdgpu_vm_update_pdes(adev, vm, false);
+
+error:
+	if (r && r != -ERESTARTSYS)
+		DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
+}
+
+/**
+ * amdgpu_gem_va_map_flags - map GEM UAPI flags into hardware flags
+ *
+ * @adev: amdgpu_device pointer
+ * @flags: GEM UAPI flags
+ *
+ * Returns the GEM UAPI flags mapped into hardware for the ASIC.
+ */
+uint64_t amdgpu_gem_va_map_flags(struct amdgpu_device *adev, uint32_t flags)
+{
+	uint64_t pte_flag = 0;
+
+	if (flags & AMDGPU_VM_PAGE_EXECUTABLE)
+		pte_flag |= AMDGPU_PTE_EXECUTABLE;
+	if (flags & AMDGPU_VM_PAGE_READABLE)
+		pte_flag |= AMDGPU_PTE_READABLE;
+	if (flags & AMDGPU_VM_PAGE_WRITEABLE)
+		pte_flag |= AMDGPU_PTE_WRITEABLE;
+	if (flags & AMDGPU_VM_PAGE_PRT)
+		pte_flag |= AMDGPU_PTE_PRT;
+	if (flags & AMDGPU_VM_PAGE_NOALLOC)
+		pte_flag |= AMDGPU_PTE_NOALLOC;
+
+	if (adev->gmc.gmc_funcs->map_mtype)
+		pte_flag |= amdgpu_gmc_map_mtype(adev,
+						 flags & AMDGPU_VM_MTYPE_MASK);
+
+	return pte_flag;
+}
+
+int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
+			  struct drm_file *filp)
+{
+	const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE |
+		AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
+		AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK |
+		AMDGPU_VM_PAGE_NOALLOC;
+	const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE |
+		AMDGPU_VM_PAGE_PRT;
+
+	struct drm_amdgpu_gem_va *args = data;
+	struct drm_gem_object *gobj;
+	struct amdgpu_device *adev = drm_to_adev(dev);
+	struct amdgpu_fpriv *fpriv = filp->driver_priv;
+	struct amdgpu_bo *abo;
+	struct amdgpu_bo_va *bo_va;
+	struct drm_exec exec;
+	uint64_t va_flags;
+	uint64_t vm_size;
+	int r = 0;
+
+	if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
+		dev_dbg(dev->dev,
+			"va_address 0x%llx is in reserved area 0x%llx\n",
+			args->va_address, AMDGPU_VA_RESERVED_SIZE);
+		return -EINVAL;
+	}
+
+	if (args->va_address >= AMDGPU_GMC_HOLE_START &&
+	    args->va_address < AMDGPU_GMC_HOLE_END) {
+		dev_dbg(dev->dev,
+			"va_address 0x%llx is in VA hole 0x%llx-0x%llx\n",
+			args->va_address, AMDGPU_GMC_HOLE_START,
+			AMDGPU_GMC_HOLE_END);
+		return -EINVAL;
+	}
+
+	args->va_address &= AMDGPU_GMC_HOLE_MASK;
+
+	vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
+	vm_size -= AMDGPU_VA_RESERVED_SIZE;
+	if (args->va_address + args->map_size > vm_size) {
+		dev_dbg(dev->dev,
+			"va_address 0x%llx is in top reserved area 0x%llx\n",
+			args->va_address + args->map_size, vm_size);
+		return -EINVAL;
+	}
+
+	if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
+		dev_dbg(dev->dev, "invalid flags combination 0x%08X\n",
+			args->flags);
+		return -EINVAL;
+	}
+
+	switch (args->operation) {
+	case AMDGPU_VA_OP_MAP:
+	case AMDGPU_VA_OP_UNMAP:
+	case AMDGPU_VA_OP_CLEAR:
+	case AMDGPU_VA_OP_REPLACE:
+		break;
+	default:
+		dev_dbg(dev->dev, "unsupported operation %d\n",
+			args->operation);
+		return -EINVAL;
+	}
+
+	if ((args->operation != AMDGPU_VA_OP_CLEAR) &&
+	    !(args->flags & AMDGPU_VM_PAGE_PRT)) {
+		gobj = drm_gem_object_lookup(filp, args->handle);
+		if (gobj == NULL)
+			return -ENOENT;
+		abo = gem_to_amdgpu_bo(gobj);
+	} else {
+		gobj = NULL;
+		abo = NULL;
+	}
+
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT |
+		      DRM_EXEC_IGNORE_DUPLICATES);
+	drm_exec_until_all_locked(&exec) {
+		if (gobj) {
+			r = drm_exec_lock_obj(&exec, gobj);
+			drm_exec_retry_on_contention(&exec);
+			if (unlikely(r))
+				goto error;
+		}
+
+		r = amdgpu_vm_lock_pd(&fpriv->vm, &exec, 2);
+		drm_exec_retry_on_contention(&exec);
+		if (unlikely(r))
+			goto error;
+	}
+
+	if (abo) {
+		bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo);
+		if (!bo_va) {
+			r = -ENOENT;
+			goto error;
+		}
+	} else if (args->operation != AMDGPU_VA_OP_CLEAR) {
+		bo_va = fpriv->prt_va;
+	} else {
+		bo_va = NULL;
+	}
+
+	switch (args->operation) {
+	case AMDGPU_VA_OP_MAP:
+		va_flags = amdgpu_gem_va_map_flags(adev, args->flags);
+		r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
+				     args->offset_in_bo, args->map_size,
+				     va_flags);
+		break;
+	case AMDGPU_VA_OP_UNMAP:
+		r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
+		break;
+
+	case AMDGPU_VA_OP_CLEAR:
+		r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm,
+						args->va_address,
+						args->map_size);
+		break;
+	case AMDGPU_VA_OP_REPLACE:
+		va_flags = amdgpu_gem_va_map_flags(adev, args->flags);
+		r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address,
+					     args->offset_in_bo, args->map_size,
+					     va_flags);
+		break;
+	default:
+		break;
+	}
+	if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug)
+		amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va,
+					args->operation);
+
+error:
+	drm_exec_fini(&exec);
+	drm_gem_object_put(gobj);
+	return r;
+}
+
+int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
+			struct drm_file *filp)
+{
+	struct amdgpu_device *adev = drm_to_adev(dev);
+	struct drm_amdgpu_gem_op *args = data;
+	struct drm_gem_object *gobj;
+	struct amdgpu_vm_bo_base *base;
+	struct amdgpu_bo *robj;
+	int r;
+
+	gobj = drm_gem_object_lookup(filp, args->handle);
+	if (!gobj)
+		return -ENOENT;
+
+	robj = gem_to_amdgpu_bo(gobj);
+
+	r = amdgpu_bo_reserve(robj, false);
+	if (unlikely(r))
+		goto out;
+
+	switch (args->op) {
+	case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
+		struct drm_amdgpu_gem_create_in info;
+		void __user *out = u64_to_user_ptr(args->value);
+
+		info.bo_size = robj->tbo.base.size;
+		info.alignment = robj->tbo.page_alignment << PAGE_SHIFT;
+		info.domains = robj->preferred_domains;
+		info.domain_flags = robj->flags;
+		amdgpu_bo_unreserve(robj);
+		if (copy_to_user(out, &info, sizeof(info)))
+			r = -EFAULT;
+		break;
+	}
+	case AMDGPU_GEM_OP_SET_PLACEMENT:
+		if (robj->tbo.base.import_attach &&
+		    args->value & AMDGPU_GEM_DOMAIN_VRAM) {
+			r = -EINVAL;
+			amdgpu_bo_unreserve(robj);
+			break;
+		}
+		if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
+			r = -EPERM;
+			amdgpu_bo_unreserve(robj);
+			break;
+		}
+		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.bo->tbo.bdev))) {
+				r = -EINVAL;
+				amdgpu_bo_unreserve(robj);
+				goto out;
+			}
+
+
+		robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
+							AMDGPU_GEM_DOMAIN_GTT |
+							AMDGPU_GEM_DOMAIN_CPU);
+		robj->allowed_domains = robj->preferred_domains;
+		if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
+			robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
+
+		if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
+			amdgpu_vm_bo_invalidate(adev, robj, true);
+
+		amdgpu_bo_unreserve(robj);
+		break;
+	default:
+		amdgpu_bo_unreserve(robj);
+		r = -EINVAL;
+	}
+
+out:
+	drm_gem_object_put(gobj);
+	return r;
+}
+
+static int amdgpu_gem_align_pitch(struct amdgpu_device *adev,
+				  int width,
+				  int cpp,
+				  bool tiled)
+{
+	int aligned = width;
+	int pitch_mask = 0;
+
+	switch (cpp) {
+	case 1:
+		pitch_mask = 255;
+		break;
+	case 2:
+		pitch_mask = 127;
+		break;
+	case 3:
+	case 4:
+		pitch_mask = 63;
+		break;
+	}
+
+	aligned += pitch_mask;
+	aligned &= ~pitch_mask;
+	return aligned * cpp;
+}
+
+int amdgpu_mode_dumb_create(struct drm_file *file_priv,
+			    struct drm_device *dev,
+			    struct drm_mode_create_dumb *args)
+{
+	struct amdgpu_device *adev = drm_to_adev(dev);
+	struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
+	struct drm_gem_object *gobj;
+	uint32_t handle;
+	u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
+		    AMDGPU_GEM_CREATE_CPU_GTT_USWC |
+		    AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
+	u32 domain;
+	int r;
+
+	/*
+	 * The buffer returned from this function should be cleared, but
+	 * it can only be done if the ring is enabled or we'll fail to
+	 * create the buffer.
+	 */
+	if (adev->mman.buffer_funcs_enabled)
+		flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED;
+
+	args->pitch = amdgpu_gem_align_pitch(adev, args->width,
+					     DIV_ROUND_UP(args->bpp, 8), 0);
+	args->size = (u64)args->pitch * args->height;
+	args->size = ALIGN(args->size, PAGE_SIZE);
+	domain = amdgpu_bo_get_preferred_domain(adev,
+				amdgpu_display_supported_domains(adev, flags));
+	r = amdgpu_gem_object_create(adev, args->size, 0, domain, flags,
+				     ttm_bo_type_device, NULL, &gobj, fpriv->xcp_id + 1);
+	if (r)
+		return -ENOMEM;
+
+	r = drm_gem_handle_create(file_priv, gobj, &handle);
+	/* drop reference from allocate - handle holds it now */
+	drm_gem_object_put(gobj);
+	if (r)
+		return r;
+
+	args->handle = handle;
+	return 0;
+}
+
+#if defined(CONFIG_DEBUG_FS)
+static int amdgpu_debugfs_gem_info_show(struct seq_file *m, void *unused)
+{
+	struct amdgpu_device *adev = m->private;
+	struct drm_device *dev = adev_to_drm(adev);
+	struct drm_file *file;
+	int r;
+
+	r = mutex_lock_interruptible(&dev->filelist_mutex);
+	if (r)
+		return r;
+
+	list_for_each_entry(file, &dev->filelist, lhead) {
+		struct task_struct *task;
+		struct drm_gem_object *gobj;
+		struct pid *pid;
+		int id;
+
+		/*
+		 * Although we have a valid reference on file->pid, that does
+		 * not guarantee that the task_struct who called get_pid() is
+		 * still alive (e.g. get_pid(current) => fork() => exit()).
+		 * Therefore, we need to protect this ->comm access using RCU.
+		 */
+		rcu_read_lock();
+		pid = rcu_dereference(file->pid);
+		task = pid_task(pid, PIDTYPE_TGID);
+		seq_printf(m, "pid %8d command %s:\n", pid_nr(pid),
+			   task ? task->comm : "<unknown>");
+		rcu_read_unlock();
+
+		spin_lock(&file->table_lock);
+		idr_for_each_entry(&file->object_idr, gobj, id) {
+			struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
+
+			amdgpu_bo_print_info(id, bo, m);
+		}
+		spin_unlock(&file->table_lock);
+	}
+
+	mutex_unlock(&dev->filelist_mutex);
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(amdgpu_debugfs_gem_info);
+
+#endif
+
+void amdgpu_debugfs_gem_init(struct amdgpu_device *adev)
+{
+#if defined(CONFIG_DEBUG_FS)
+	struct drm_minor *minor = adev_to_drm(adev)->primary;
+	struct dentry *root = minor->debugfs_root;
+
+	debugfs_create_file("amdgpu_gem_info", 0444, root, adev,
+			    &amdgpu_debugfs_gem_info_fops);
+#endif
+}