drivers/gpu/drm/virtio/virtgpu_drv.h - linux - Git at Google

 /*
  * 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.
  */

 #ifndef VIRTIO_DRV_H
 #define VIRTIO_DRV_H

 #include <linux/dma-direction.h>
 #include <linux/virtio.h>
 #include <linux/virtio_ids.h>
 #include <linux/virtio_config.h>
 #include <linux/virtio_gpu.h>

 #include <drm/drm_atomic.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_encoder.h>
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem.h>
 #include <drm/drm_gem_shmem_helper.h>
 #include <drm/drm_ioctl.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/virtgpu_drm.h>

 #define DRIVER_NAME "virtio_gpu"
 #define DRIVER_DESC "virtio GPU"
 #define DRIVER_DATE "0"

 #define DRIVER_MAJOR 0
 #define DRIVER_MINOR 1
 #define DRIVER_PATCHLEVEL 0

 #define STATE_INITIALIZING 0
 #define STATE_OK 1
 #define STATE_ERR 2

 #define MAX_CAPSET_ID 63
 #define MAX_RINGS 64

 struct virtio_gpu_object_params {
 	unsigned long size;
 	bool dumb;
 	/* 3d */
 	bool virgl;
 	bool blob;

 	/* classic resources only */
 	uint32_t format;
 	uint32_t width;
 	uint32_t height;
 	uint32_t target;
 	uint32_t bind;
 	uint32_t depth;
 	uint32_t array_size;
 	uint32_t last_level;
 	uint32_t nr_samples;
 	uint32_t flags;

 	/* blob resources only */
 	uint32_t ctx_id;
 	uint32_t blob_mem;
 	uint32_t blob_flags;
 	uint64_t blob_id;
 };

 struct virtio_gpu_object {
 	struct drm_gem_shmem_object base;
 	uint32_t hw_res_handle;
 	bool dumb;
 	bool created;
 	bool host3d_blob, guest_blob;
 	uint32_t blob_mem, blob_flags;

 	int uuid_state;
 	uuid_t uuid;
 };
 #define gem_to_virtio_gpu_obj(gobj) \
 	container_of((gobj), struct virtio_gpu_object, base.base)

 struct virtio_gpu_object_shmem {
 	struct virtio_gpu_object base;
 	struct sg_table *pages;
 	uint32_t mapped;
 };

 struct virtio_gpu_object_vram {
 	struct virtio_gpu_object base;
 	uint32_t map_state;
 	uint32_t map_info;
 	struct drm_mm_node vram_node;
 };

 #define to_virtio_gpu_shmem(virtio_gpu_object) \
 	container_of((virtio_gpu_object), struct virtio_gpu_object_shmem, base)

 #define to_virtio_gpu_vram(virtio_gpu_object) \
 	container_of((virtio_gpu_object), struct virtio_gpu_object_vram, base)

 struct virtio_gpu_object_array {
 	struct ww_acquire_ctx ticket;
 	struct list_head next;
 	u32 nents, total;
 	struct drm_gem_object *objs[];
 };

 struct virtio_gpu_vbuffer;
 struct virtio_gpu_device;

 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev,
 				   struct virtio_gpu_vbuffer *vbuf);

 struct virtio_gpu_fence_driver {
 	atomic64_t       last_fence_id;
 	uint64_t         current_fence_id;
 	uint64_t         context;
 	struct list_head fences;
 	spinlock_t       lock;
 };

 struct virtio_gpu_fence_event {
 	struct drm_pending_event base;
 	struct drm_event event;
 };

 struct virtio_gpu_fence {
 	struct dma_fence f;
 	uint32_t ring_idx;
 	uint64_t fence_id;
 	bool emit_fence_info;
 	struct virtio_gpu_fence_event *e;
 	struct virtio_gpu_fence_driver *drv;
 	struct list_head node;
 };

 struct virtio_gpu_vbuffer {
 	char *buf;
 	int size;

 	void *data_buf;
 	uint32_t data_size;

 	char *resp_buf;
 	int resp_size;
 	virtio_gpu_resp_cb resp_cb;
 	void *resp_cb_data;

 	struct virtio_gpu_object_array *objs;
 	struct list_head list;
 };

 struct virtio_gpu_output {
 	int index;
 	struct drm_crtc crtc;
 	struct drm_connector conn;
 	struct drm_encoder enc;
 	struct virtio_gpu_display_one info;
 	struct virtio_gpu_update_cursor cursor;
 	struct edid *edid;
 	int cur_x;
 	int cur_y;
 	bool needs_modeset;
 };
 #define drm_crtc_to_virtio_gpu_output(x) \
 	container_of(x, struct virtio_gpu_output, crtc)

 struct virtio_gpu_framebuffer {
 	struct drm_framebuffer base;
 	struct virtio_gpu_fence *fence;
 };
 #define to_virtio_gpu_framebuffer(x) \
 	container_of(x, struct virtio_gpu_framebuffer, base)

 struct virtio_gpu_queue {
 	struct virtqueue *vq;
 	spinlock_t qlock;
 	wait_queue_head_t ack_queue;
 	struct work_struct dequeue_work;
 };

 struct virtio_gpu_drv_capset {
 	uint32_t id;
 	uint32_t max_version;
 	uint32_t max_size;
 };

 struct virtio_gpu_drv_cap_cache {
 	struct list_head head;
 	void *caps_cache;
 	uint32_t id;
 	uint32_t version;
 	uint32_t size;
 	atomic_t is_valid;
 };

 struct virtio_gpu_device {
 	struct device *dev;
 	struct drm_device *ddev;

 	struct virtio_device *vdev;

 	struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
 	uint32_t num_scanouts;

 	struct virtio_gpu_queue ctrlq;
 	struct virtio_gpu_queue cursorq;
 	struct kmem_cache *vbufs;

 	atomic_t pending_commands;

 	struct ida	resource_ida;

 	wait_queue_head_t resp_wq;
 	/* current display info */
 	spinlock_t display_info_lock;
 	bool display_info_pending;

 	struct virtio_gpu_fence_driver fence_drv;

 	struct ida	ctx_id_ida;

 	bool has_virgl_3d;
 	bool has_edid;
 	bool has_indirect;
 	bool has_resource_assign_uuid;
 	bool has_resource_blob;
 	bool has_host_visible;
 	bool has_context_init;
 	struct virtio_shm_region host_visible_region;
 	struct drm_mm host_visible_mm;

 	struct work_struct config_changed_work;

 	struct work_struct obj_free_work;
 	spinlock_t obj_free_lock;
 	struct list_head obj_free_list;

 	struct virtio_gpu_drv_capset *capsets;
 	uint32_t num_capsets;
 	uint64_t capset_id_mask;
 	struct list_head cap_cache;

 	/* protects uuid state when exporting */
 	spinlock_t resource_export_lock;
 	/* protects map state and host_visible_mm */
 	spinlock_t host_visible_lock;
 };

 struct virtio_gpu_fpriv {
 	uint32_t ctx_id;
 	uint32_t context_init;
 	bool context_created;
 	uint32_t num_rings;
 	uint64_t base_fence_ctx;
 	uint64_t ring_idx_mask;
 	struct mutex context_lock;
 };

 /* virtgpu_ioctl.c */
 #define DRM_VIRTIO_NUM_IOCTLS 12
 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
 void virtio_gpu_create_context(struct drm_device *dev, struct drm_file *file);

 /* virtgpu_kms.c */
 int virtio_gpu_init(struct drm_device *dev);
 void virtio_gpu_deinit(struct drm_device *dev);
 void virtio_gpu_release(struct drm_device *dev);
 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);

 /* virtgpu_gem.c */
 int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
 			       struct drm_file *file);
 void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
 				 struct drm_file *file);
 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
 				struct drm_device *dev,
 				struct drm_mode_create_dumb *args);
 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
 			      struct drm_device *dev,
 			      uint32_t handle, uint64_t *offset_p);

 struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
 struct virtio_gpu_object_array*
 virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents);
 void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
 			      struct drm_gem_object *obj);
 int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs);
 void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs);
 void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
 				struct dma_fence *fence);
 void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs);
 void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev,
 				       struct virtio_gpu_object_array *objs);
 void virtio_gpu_array_put_free_work(struct work_struct *work);

 /* virtgpu_vq.c */
 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
 				    struct virtio_gpu_object *bo,
 				    struct virtio_gpu_object_params *params,
 				    struct virtio_gpu_object_array *objs,
 				    struct virtio_gpu_fence *fence);
 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
 				   struct virtio_gpu_object *bo);
 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
 					uint64_t offset,
 					uint32_t width, uint32_t height,
 					uint32_t x, uint32_t y,
 					struct virtio_gpu_object_array *objs,
 					struct virtio_gpu_fence *fence);
 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
 				   uint32_t resource_id,
 				   uint32_t x, uint32_t y,
 				   uint32_t width, uint32_t height,
 				   struct virtio_gpu_object_array *objs,
 				   struct virtio_gpu_fence *fence);
 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
 				uint32_t scanout_id, uint32_t resource_id,
 				uint32_t width, uint32_t height,
 				uint32_t x, uint32_t y);
 void virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
 			      struct virtio_gpu_object *obj,
 			      struct virtio_gpu_mem_entry *ents,
 			      unsigned int nents);
 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
 			    struct virtio_gpu_output *output);
 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
 			      int idx, int version,
 			      struct virtio_gpu_drv_cap_cache **cache_p);
 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev);
 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
 				   uint32_t context_init, uint32_t nlen,
 				   const char *name);
 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
 				    uint32_t id);
 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
 					    uint32_t ctx_id,
 					    struct virtio_gpu_object_array *objs);
 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
 					    uint32_t ctx_id,
 					    struct virtio_gpu_object_array *objs);
 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
 			   void *data, uint32_t data_size,
 			   uint32_t ctx_id,
 			   struct virtio_gpu_object_array *objs,
 			   struct virtio_gpu_fence *fence);
 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
 					  uint32_t ctx_id,
 					  uint64_t offset, uint32_t level,
 					  uint32_t stride,
 					  uint32_t layer_stride,
 					  struct drm_virtgpu_3d_box *box,
 					  struct virtio_gpu_object_array *objs,
 					  struct virtio_gpu_fence *fence);
 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
 					uint32_t ctx_id,
 					uint64_t offset, uint32_t level,
 					uint32_t stride,
 					uint32_t layer_stride,
 					struct drm_virtgpu_3d_box *box,
 					struct virtio_gpu_object_array *objs,
 					struct virtio_gpu_fence *fence);
 void
 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
 				  struct virtio_gpu_object *bo,
 				  struct virtio_gpu_object_params *params,
 				  struct virtio_gpu_object_array *objs,
 				  struct virtio_gpu_fence *fence);
 void virtio_gpu_ctrl_ack(struct virtqueue *vq);
 void virtio_gpu_cursor_ack(struct virtqueue *vq);
 void virtio_gpu_fence_ack(struct virtqueue *vq);
 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
 void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
 void virtio_gpu_dequeue_fence_func(struct work_struct *work);

 void virtio_gpu_notify(struct virtio_gpu_device *vgdev);

 int
 virtio_gpu_cmd_resource_assign_uuid(struct virtio_gpu_device *vgdev,
 				    struct virtio_gpu_object_array *objs);

 int virtio_gpu_cmd_map(struct virtio_gpu_device *vgdev,
 		       struct virtio_gpu_object_array *objs, uint64_t offset);

 void virtio_gpu_cmd_unmap(struct virtio_gpu_device *vgdev,
 			  struct virtio_gpu_object *bo);

 void
 virtio_gpu_cmd_resource_create_blob(struct virtio_gpu_device *vgdev,
 				    struct virtio_gpu_object *bo,
 				    struct virtio_gpu_object_params *params,
 				    struct virtio_gpu_mem_entry *ents,
 				    uint32_t nents);
 void
 virtio_gpu_cmd_set_scanout_blob(struct virtio_gpu_device *vgdev,
 				uint32_t scanout_id,
 				struct virtio_gpu_object *bo,
 				struct drm_framebuffer *fb,
 				uint32_t width, uint32_t height,
 				uint32_t x, uint32_t y);

 /* virtgpu_display.c */
 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);

 /* virtgpu_plane.c */
 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
 					enum drm_plane_type type,
 					int index);

 /* virtgpu_fence.c */
 struct virtio_gpu_fence *virtio_gpu_fence_alloc(struct virtio_gpu_device *vgdev,
 						uint64_t base_fence_ctx,
 						uint32_t ring_idx);
 void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
 			  struct virtio_gpu_ctrl_hdr *cmd_hdr,
 			  struct virtio_gpu_fence *fence);
 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
 				    u64 fence_id);

 /* virtgpu_object.c */
 void virtio_gpu_cleanup_object(struct virtio_gpu_object *bo);
 struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
 						size_t size);
 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
 			     struct virtio_gpu_object_params *params,
 			     struct virtio_gpu_object **bo_ptr,
 			     struct virtio_gpu_fence *fence);

 bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo);

 int virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev,
 			       uint32_t *resid);
 /* virtgpu_prime.c */
 int virtio_gpu_resource_assign_uuid(struct virtio_gpu_device *vgdev,
 				    struct virtio_gpu_object *bo);
 struct dma_buf *virtgpu_gem_prime_export(struct drm_gem_object *obj,
 					 int flags);
 struct drm_gem_object *virtgpu_gem_prime_import(struct drm_device *dev,
 						struct dma_buf *buf);
 int virtgpu_gem_prime_get_uuid(struct drm_gem_object *obj,
 			       uuid_t *uuid);
 struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
 	struct drm_device *dev, struct dma_buf_attachment *attach,
 	struct sg_table *sgt);

 /* virtgpu_debugfs.c */
 void virtio_gpu_debugfs_init(struct drm_minor *minor);

 /* virtgpu_vram.c */
 bool virtio_gpu_is_vram(struct virtio_gpu_object *bo);
 int virtio_gpu_vram_create(struct virtio_gpu_device *vgdev,
 			   struct virtio_gpu_object_params *params,
 			   struct virtio_gpu_object **bo_ptr);
 struct sg_table *virtio_gpu_vram_map_dma_buf(struct virtio_gpu_object *bo,
 					     struct device *dev,
 					     enum dma_data_direction dir);
 void virtio_gpu_vram_unmap_dma_buf(struct device *dev,
 				   struct sg_table *sgt,
 				   enum dma_data_direction dir);

 #endif
	/*
	* 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.
	*/

	#ifndef VIRTIO_DRV_H
	#define VIRTIO_DRV_H

	#include <linux/dma-direction.h>
	#include <linux/virtio.h>
	#include <linux/virtio_ids.h>
	#include <linux/virtio_config.h>
	#include <linux/virtio_gpu.h>

	#include <drm/drm_atomic.h>
	#include <drm/drm_drv.h>
	#include <drm/drm_encoder.h>
	#include <drm/drm_fb_helper.h>
	#include <drm/drm_fourcc.h>
	#include <drm/drm_gem.h>
	#include <drm/drm_gem_shmem_helper.h>
	#include <drm/drm_ioctl.h>
	#include <drm/drm_probe_helper.h>
	#include <drm/virtgpu_drm.h>

	#define DRIVER_NAME "virtio_gpu"
	#define DRIVER_DESC "virtio GPU"
	#define DRIVER_DATE "0"

	#define DRIVER_MAJOR 0
	#define DRIVER_MINOR 1
	#define DRIVER_PATCHLEVEL 0

	#define STATE_INITIALIZING 0
	#define STATE_OK 1
	#define STATE_ERR 2

	#define MAX_CAPSET_ID 63
	#define MAX_RINGS 64

	struct virtio_gpu_object_params {
	unsigned long size;
	bool dumb;
	/* 3d */
	bool virgl;
	bool blob;

	/* classic resources only */
	uint32_t format;
	uint32_t width;
	uint32_t height;
	uint32_t target;
	uint32_t bind;
	uint32_t depth;
	uint32_t array_size;
	uint32_t last_level;
	uint32_t nr_samples;
	uint32_t flags;

	/* blob resources only */
	uint32_t ctx_id;
	uint32_t blob_mem;
	uint32_t blob_flags;
	uint64_t blob_id;
	};

	struct virtio_gpu_object {
	struct drm_gem_shmem_object base;
	uint32_t hw_res_handle;
	bool dumb;
	bool created;
	bool host3d_blob, guest_blob;
	uint32_t blob_mem, blob_flags;

	int uuid_state;
	uuid_t uuid;
	};
	#define gem_to_virtio_gpu_obj(gobj) \
	container_of((gobj), struct virtio_gpu_object, base.base)

	struct virtio_gpu_object_shmem {
	struct virtio_gpu_object base;
	struct sg_table *pages;
	uint32_t mapped;
	};

	struct virtio_gpu_object_vram {
	struct virtio_gpu_object base;
	uint32_t map_state;
	uint32_t map_info;
	struct drm_mm_node vram_node;
	};

	#define to_virtio_gpu_shmem(virtio_gpu_object) \
	container_of((virtio_gpu_object), struct virtio_gpu_object_shmem, base)

	#define to_virtio_gpu_vram(virtio_gpu_object) \
	container_of((virtio_gpu_object), struct virtio_gpu_object_vram, base)

	struct virtio_gpu_object_array {
	struct ww_acquire_ctx ticket;
	struct list_head next;
	u32 nents, total;
	struct drm_gem_object *objs[];
	};

	struct virtio_gpu_vbuffer;
	struct virtio_gpu_device;

	typedef void (virtio_gpu_resp_cb)(struct virtio_gpu_device vgdev,
	struct virtio_gpu_vbuffer *vbuf);

	struct virtio_gpu_fence_driver {
	atomic64_t last_fence_id;
	uint64_t current_fence_id;
	uint64_t context;
	struct list_head fences;
	spinlock_t lock;
	};

	struct virtio_gpu_fence_event {
	struct drm_pending_event base;
	struct drm_event event;
	};

	struct virtio_gpu_fence {
	struct dma_fence f;
	uint32_t ring_idx;
	uint64_t fence_id;
	bool emit_fence_info;
	struct virtio_gpu_fence_event *e;
	struct virtio_gpu_fence_driver *drv;
	struct list_head node;
	};

	struct virtio_gpu_vbuffer {
	char *buf;
	int size;

	void *data_buf;
	uint32_t data_size;

	char *resp_buf;
	int resp_size;
	virtio_gpu_resp_cb resp_cb;
	void *resp_cb_data;

	struct virtio_gpu_object_array *objs;
	struct list_head list;
	};

	struct virtio_gpu_output {
	int index;
	struct drm_crtc crtc;
	struct drm_connector conn;
	struct drm_encoder enc;
	struct virtio_gpu_display_one info;
	struct virtio_gpu_update_cursor cursor;
	struct edid *edid;
	int cur_x;
	int cur_y;
	bool needs_modeset;
	};
	#define drm_crtc_to_virtio_gpu_output(x) \
	container_of(x, struct virtio_gpu_output, crtc)

	struct virtio_gpu_framebuffer {
	struct drm_framebuffer base;
	struct virtio_gpu_fence *fence;
	};
	#define to_virtio_gpu_framebuffer(x) \
	container_of(x, struct virtio_gpu_framebuffer, base)

	struct virtio_gpu_queue {
	struct virtqueue *vq;
	spinlock_t qlock;
	wait_queue_head_t ack_queue;
	struct work_struct dequeue_work;
	};

	struct virtio_gpu_drv_capset {
	uint32_t id;
	uint32_t max_version;
	uint32_t max_size;
	};

	struct virtio_gpu_drv_cap_cache {
	struct list_head head;
	void *caps_cache;
	uint32_t id;
	uint32_t version;
	uint32_t size;
	atomic_t is_valid;
	};

	struct virtio_gpu_device {
	struct device *dev;
	struct drm_device *ddev;

	struct virtio_device *vdev;

	struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
	uint32_t num_scanouts;

	struct virtio_gpu_queue ctrlq;
	struct virtio_gpu_queue cursorq;
	struct kmem_cache *vbufs;

	atomic_t pending_commands;

	struct ida resource_ida;

	wait_queue_head_t resp_wq;
	/* current display info */
	spinlock_t display_info_lock;
	bool display_info_pending;

	struct virtio_gpu_fence_driver fence_drv;

	struct ida ctx_id_ida;

	bool has_virgl_3d;
	bool has_edid;
	bool has_indirect;
	bool has_resource_assign_uuid;
	bool has_resource_blob;
	bool has_host_visible;
	bool has_context_init;
	struct virtio_shm_region host_visible_region;
	struct drm_mm host_visible_mm;

	struct work_struct config_changed_work;

	struct work_struct obj_free_work;
	spinlock_t obj_free_lock;
	struct list_head obj_free_list;

	struct virtio_gpu_drv_capset *capsets;
	uint32_t num_capsets;
	uint64_t capset_id_mask;
	struct list_head cap_cache;

	/* protects uuid state when exporting */
	spinlock_t resource_export_lock;
	/* protects map state and host_visible_mm */
	spinlock_t host_visible_lock;
	};

	struct virtio_gpu_fpriv {
	uint32_t ctx_id;
	uint32_t context_init;
	bool context_created;
	uint32_t num_rings;
	uint64_t base_fence_ctx;
	uint64_t ring_idx_mask;
	struct mutex context_lock;
	};

	/* virtgpu_ioctl.c */
	#define DRM_VIRTIO_NUM_IOCTLS 12
	extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
	void virtio_gpu_create_context(struct drm_device dev, struct drm_file file);

	/* virtgpu_kms.c */
	int virtio_gpu_init(struct drm_device *dev);
	void virtio_gpu_deinit(struct drm_device *dev);
	void virtio_gpu_release(struct drm_device *dev);
	int virtio_gpu_driver_open(struct drm_device dev, struct drm_file file);
	void virtio_gpu_driver_postclose(struct drm_device dev, struct drm_file file);

	/* virtgpu_gem.c */
	int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
	struct drm_file *file);
	void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
	struct drm_file *file);
	int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
	struct drm_device *dev,
	struct drm_mode_create_dumb *args);
	int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
	struct drm_device *dev,
	uint32_t handle, uint64_t *offset_p);

	struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
	struct virtio_gpu_object_array*
	virtio_gpu_array_from_handles(struct drm_file drm_file, u32 handles, u32 nents);
	void virtio_gpu_array_add_obj(struct virtio_gpu_object_array *objs,
	struct drm_gem_object *obj);
	int virtio_gpu_array_lock_resv(struct virtio_gpu_object_array *objs);
	void virtio_gpu_array_unlock_resv(struct virtio_gpu_object_array *objs);
	void virtio_gpu_array_add_fence(struct virtio_gpu_object_array *objs,
	struct dma_fence *fence);
	void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs);
	void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object_array *objs);
	void virtio_gpu_array_put_free_work(struct work_struct *work);

	/* virtgpu_vq.c */
	int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev);
	void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev);
	void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object *bo,
	struct virtio_gpu_object_params *params,
	struct virtio_gpu_object_array *objs,
	struct virtio_gpu_fence *fence);
	void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object *bo);
	void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
	uint64_t offset,
	uint32_t width, uint32_t height,
	uint32_t x, uint32_t y,
	struct virtio_gpu_object_array *objs,
	struct virtio_gpu_fence *fence);
	void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
	uint32_t resource_id,
	uint32_t x, uint32_t y,
	uint32_t width, uint32_t height,
	struct virtio_gpu_object_array *objs,
	struct virtio_gpu_fence *fence);
	void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
	uint32_t scanout_id, uint32_t resource_id,
	uint32_t width, uint32_t height,
	uint32_t x, uint32_t y);
	void virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object *obj,
	struct virtio_gpu_mem_entry *ents,
	unsigned int nents);
	int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev);
	int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev);
	void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_output *output);
	int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
	int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
	int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
	int idx, int version,
	struct virtio_gpu_drv_cap_cache **cache_p);
	int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev);
	void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
	uint32_t context_init, uint32_t nlen,
	const char *name);
	void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
	uint32_t id);
	void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
	uint32_t ctx_id,
	struct virtio_gpu_object_array *objs);
	void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
	uint32_t ctx_id,
	struct virtio_gpu_object_array *objs);
	void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
	void *data, uint32_t data_size,
	uint32_t ctx_id,
	struct virtio_gpu_object_array *objs,
	struct virtio_gpu_fence *fence);
	void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
	uint32_t ctx_id,
	uint64_t offset, uint32_t level,
	uint32_t stride,
	uint32_t layer_stride,
	struct drm_virtgpu_3d_box *box,
	struct virtio_gpu_object_array *objs,
	struct virtio_gpu_fence *fence);
	void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
	uint32_t ctx_id,
	uint64_t offset, uint32_t level,
	uint32_t stride,
	uint32_t layer_stride,
	struct drm_virtgpu_3d_box *box,
	struct virtio_gpu_object_array *objs,
	struct virtio_gpu_fence *fence);
	void
	virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object *bo,
	struct virtio_gpu_object_params *params,
	struct virtio_gpu_object_array *objs,
	struct virtio_gpu_fence *fence);
	void virtio_gpu_ctrl_ack(struct virtqueue *vq);
	void virtio_gpu_cursor_ack(struct virtqueue *vq);
	void virtio_gpu_fence_ack(struct virtqueue *vq);
	void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
	void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
	void virtio_gpu_dequeue_fence_func(struct work_struct *work);

	void virtio_gpu_notify(struct virtio_gpu_device *vgdev);

	int
	virtio_gpu_cmd_resource_assign_uuid(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object_array *objs);

	int virtio_gpu_cmd_map(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object_array *objs, uint64_t offset);

	void virtio_gpu_cmd_unmap(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object *bo);

	void
	virtio_gpu_cmd_resource_create_blob(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object *bo,
	struct virtio_gpu_object_params *params,
	struct virtio_gpu_mem_entry *ents,
	uint32_t nents);
	void
	virtio_gpu_cmd_set_scanout_blob(struct virtio_gpu_device *vgdev,
	uint32_t scanout_id,
	struct virtio_gpu_object *bo,
	struct drm_framebuffer *fb,
	uint32_t width, uint32_t height,
	uint32_t x, uint32_t y);

	/* virtgpu_display.c */
	int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
	void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);

	/* virtgpu_plane.c */
	uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc);
	struct drm_plane virtio_gpu_plane_init(struct virtio_gpu_device vgdev,
	enum drm_plane_type type,
	int index);

	/* virtgpu_fence.c */
	struct virtio_gpu_fence virtio_gpu_fence_alloc(struct virtio_gpu_device vgdev,
	uint64_t base_fence_ctx,
	uint32_t ring_idx);
	void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_ctrl_hdr *cmd_hdr,
	struct virtio_gpu_fence *fence);
	void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
	u64 fence_id);

	/* virtgpu_object.c */
	void virtio_gpu_cleanup_object(struct virtio_gpu_object *bo);
	struct drm_gem_object virtio_gpu_create_object(struct drm_device dev,
	size_t size);
	int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object_params *params,
	struct virtio_gpu_object **bo_ptr,
	struct virtio_gpu_fence *fence);

	bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo);

	int virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev,
	uint32_t *resid);
	/* virtgpu_prime.c */
	int virtio_gpu_resource_assign_uuid(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object *bo);
	struct dma_buf virtgpu_gem_prime_export(struct drm_gem_object obj,
	int flags);
	struct drm_gem_object virtgpu_gem_prime_import(struct drm_device dev,
	struct dma_buf *buf);
	int virtgpu_gem_prime_get_uuid(struct drm_gem_object *obj,
	uuid_t *uuid);
	struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
	struct drm_device dev, struct dma_buf_attachment attach,
	struct sg_table *sgt);

	/* virtgpu_debugfs.c */
	void virtio_gpu_debugfs_init(struct drm_minor *minor);

	/* virtgpu_vram.c */
	bool virtio_gpu_is_vram(struct virtio_gpu_object *bo);
	int virtio_gpu_vram_create(struct virtio_gpu_device *vgdev,
	struct virtio_gpu_object_params *params,
	struct virtio_gpu_object **bo_ptr);
	struct sg_table virtio_gpu_vram_map_dma_buf(struct virtio_gpu_object bo,
	struct device *dev,
	enum dma_data_direction dir);
	void virtio_gpu_vram_unmap_dma_buf(struct device *dev,
	struct sg_table *sgt,
	enum dma_data_direction dir);

	#endif