Adding upstream version 6.1.76.upstream/6.1.76

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

1 files changed, 296 insertions, 0 deletions

diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c
new file mode 100644
index 000000000..7db48d17e
--- /dev/null
+++ b/drivers/gpu/drm/virtio/virtgpu_gem.c
@@ -0,0 +1,296 @@
+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ * All Rights Reserved.
+ *
+ * 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 (including the
+ * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.
+ */
+
+#include <drm/drm_file.h>
+#include <drm/drm_fourcc.h>
+
+#include "virtgpu_drv.h"
+
+static int virtio_gpu_gem_create(struct drm_file *file,
+				 struct drm_device *dev,
+				 struct virtio_gpu_object_params *params,
+				 struct drm_gem_object **obj_p,
+				 uint32_t *handle_p)
+{
+	struct virtio_gpu_device *vgdev = dev->dev_private;
+	struct virtio_gpu_object *obj;
+	int ret;
+	u32 handle;
+
+	ret = virtio_gpu_object_create(vgdev, params, &obj, NULL);
+	if (ret < 0)
+		return ret;
+
+	ret = drm_gem_handle_create(file, &obj->base.base, &handle);
+	if (ret) {
+		drm_gem_object_release(&obj->base.base);
+		return ret;
+	}
+
+	*obj_p = &obj->base.base;
+
+	/* drop reference from allocate - handle holds it now */
+	drm_gem_object_put(&obj->base.base);
+
+	*handle_p = handle;
+	return 0;
+}
+
+int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
+				struct drm_device *dev,
+				struct drm_mode_create_dumb *args)
+{
+	struct drm_gem_object *gobj;
+	struct virtio_gpu_object_params params = { 0 };
+	struct virtio_gpu_device *vgdev = dev->dev_private;
+	int ret;
+	uint32_t pitch;
+
+	if (args->bpp != 32)
+		return -EINVAL;
+
+	pitch = args->width * 4;
+	args->size = pitch * args->height;
+	args->size = ALIGN(args->size, PAGE_SIZE);
+
+	params.format = virtio_gpu_translate_format(DRM_FORMAT_HOST_XRGB8888);
+	params.width = args->width;
+	params.height = args->height;
+	params.size = args->size;
+	params.dumb = true;
+
+	if (vgdev->has_resource_blob && !vgdev->has_virgl_3d) {
+		params.blob_mem = VIRTGPU_BLOB_MEM_GUEST;
+		params.blob_flags = VIRTGPU_BLOB_FLAG_USE_SHAREABLE;
+		params.blob = true;
+	}
+
+	ret = virtio_gpu_gem_create(file_priv, dev, &params, &gobj,
+				    &args->handle);
+	if (ret)
+		goto fail;
+
+	args->pitch = pitch;
+	return ret;
+
+fail:
+	return ret;
+}
+
+int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
+			      struct drm_device *dev,
+			      uint32_t handle, uint64_t *offset_p)
+{
+	struct drm_gem_object *gobj;
+
+	BUG_ON(!offset_p);
+	gobj = drm_gem_object_lookup(file_priv, handle);
+	if (gobj == NULL)
+		return -ENOENT;
+	*offset_p = drm_vma_node_offset_addr(&gobj->vma_node);
+	drm_gem_object_put(gobj);
+	return 0;
+}
+
+int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
+			       struct drm_file *file)
+{
+	struct virtio_gpu_device *vgdev = obj->dev->dev_private;
+	struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
+	struct virtio_gpu_object_array *objs;
+
+	if (!vgdev->has_virgl_3d)
+		goto out_notify;
+
+	/* the context might still be missing when the first ioctl is
+	 * DRM_IOCTL_MODE_CREATE_DUMB or DRM_IOCTL_PRIME_FD_TO_HANDLE
+	 */
+	virtio_gpu_create_context(obj->dev, file);
+
+	objs = virtio_gpu_array_alloc(1);
+	if (!objs)
+		return -ENOMEM;
+	virtio_gpu_array_add_obj(objs, obj);
+
+	virtio_gpu_cmd_context_attach_resource(vgdev, vfpriv->ctx_id,
+					       objs);
+out_notify:
+	virtio_gpu_notify(vgdev);
+	return 0;
+}
+
+void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
+				 struct drm_file *file)
+{
+	struct virtio_gpu_device *vgdev = obj->dev->dev_private;
+	struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
+	struct virtio_gpu_object_array *objs;
+
+	if (!vgdev->has_virgl_3d)
+		return;
+
+	objs = virtio_gpu_array_alloc(1);
+	if (!objs)
+		return;
+	virtio_gpu_array_add_obj(objs, obj);
+
+	virtio_gpu_cmd_context_detach_resource(vgdev, vfpriv->ctx_id,
+					       objs);
+	virtio_gpu_notify(vgdev);
+}
+
+struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents)
+{
+	struct virtio_gpu_object_array *objs;
+
+	objs = kmalloc(struct_size(objs, objs, nents), GFP_KERNEL);
+	if (!objs)
+		return NULL;
+
+	objs->nents = 0;
+	objs->total = nents;
+	return objs;
+}
+
+static void virtio_gpu_array_free(struct virtio_gpu_object_array *objs)
+{
+	kfree(objs);
+}
+
+struct virtio_gpu_object_array*
+virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents)
+{
+	struct virtio_gpu_object_array *objs;
+	u32 i;
+
+	objs = virtio_gpu_array_alloc(nents);
+	if (!objs)
+		return NULL;
+
+	for (i = 0; i < nents; i++) {
+		objs->objs[i] = drm_gem_object_lookup(drm_file, handles[i]);
+		if (!objs->objs[i]) {
+			objs->nents = i;
+			virtio_gpu_array_put_free(objs);
+			return NULL;
+		}
+	}
+	objs->nents = i;
+	return objs;
+}
+
+void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
+			      struct drm_gem_object *obj)
+{
+	if (WARN_ON_ONCE(objs->nents == objs->total))
+		return;
+
+	drm_gem_object_get(obj);
+	objs->objs[objs->nents] = obj;
+	objs->nents++;
+}
+
+int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs)
+{
+	unsigned int i;
+	int ret;
+
+	if (objs->nents == 1) {
+		ret = dma_resv_lock_interruptible(objs->objs[0]->resv, NULL);
+	} else {
+		ret = drm_gem_lock_reservations(objs->objs, objs->nents,
+						&objs->ticket);
+	}
+	if (ret)
+		return ret;
+
+	for (i = 0; i < objs->nents; ++i) {
+		ret = dma_resv_reserve_fences(objs->objs[i]->resv, 1);
+		if (ret) {
+			virtio_gpu_array_unlock_resv(objs);
+			return ret;
+		}
+	}
+	return ret;
+}
+
+void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs)
+{
+	if (objs->nents == 1) {
+		dma_resv_unlock(objs->objs[0]->resv);
+	} else {
+		drm_gem_unlock_reservations(objs->objs, objs->nents,
+					    &objs->ticket);
+	}
+}
+
+void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
+				struct dma_fence *fence)
+{
+	int i;
+
+	for (i = 0; i < objs->nents; i++)
+		dma_resv_add_fence(objs->objs[i]->resv, fence,
+				   DMA_RESV_USAGE_WRITE);
+}
+
+void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs)
+{
+	u32 i;
+
+	if (!objs)
+		return;
+
+	for (i = 0; i < objs->nents; i++)
+		drm_gem_object_put(objs->objs[i]);
+	virtio_gpu_array_free(objs);
+}
+
+void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev,
+				       struct virtio_gpu_object_array *objs)
+{
+	spin_lock(&vgdev->obj_free_lock);
+	list_add_tail(&objs->next, &vgdev->obj_free_list);
+	spin_unlock(&vgdev->obj_free_lock);
+	schedule_work(&vgdev->obj_free_work);
+}
+
+void virtio_gpu_array_put_free_work(struct work_struct *work)
+{
+	struct virtio_gpu_device *vgdev =
+		container_of(work, struct virtio_gpu_device, obj_free_work);
+	struct virtio_gpu_object_array *objs;
+
+	spin_lock(&vgdev->obj_free_lock);
+	while (!list_empty(&vgdev->obj_free_list)) {
+		objs = list_first_entry(&vgdev->obj_free_list,
+					struct virtio_gpu_object_array, next);
+		list_del(&objs->next);
+		spin_unlock(&vgdev->obj_free_lock);
+		virtio_gpu_array_put_free(objs);
+		spin_lock(&vgdev->obj_free_lock);
+	}
+	spin_unlock(&vgdev->obj_free_lock);
+}