virtgpu_drv.h revision 1.1
1 /* $NetBSD: virtgpu_drv.h,v 1.1 2018/08/27 01:34:59 riastradh Exp $ */ 2 3 /* 4 * Copyright (C) 2015 Red Hat, Inc. 5 * All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining 8 * a copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sublicense, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the 16 * next paragraph) shall be included in all copies or substantial 17 * portions of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 22 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 23 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 24 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 25 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 26 */ 27 28 #ifndef VIRTIO_DRV_H 29 #define VIRTIO_DRV_H 30 31 #include <linux/virtio.h> 32 #include <linux/virtio_ids.h> 33 #include <linux/virtio_config.h> 34 #include <linux/virtio_gpu.h> 35 36 #include <drm/drmP.h> 37 #include <drm/drm_gem.h> 38 #include <drm/drm_crtc_helper.h> 39 #include <ttm/ttm_bo_api.h> 40 #include <ttm/ttm_bo_driver.h> 41 #include <ttm/ttm_placement.h> 42 #include <ttm/ttm_module.h> 43 44 #define DRIVER_NAME "virtio_gpu" 45 #define DRIVER_DESC "virtio GPU" 46 #define DRIVER_DATE "0" 47 48 #define DRIVER_MAJOR 0 49 #define DRIVER_MINOR 0 50 #define DRIVER_PATCHLEVEL 1 51 52 /* virtgpu_drm_bus.c */ 53 int drm_virtio_set_busid(struct drm_device *dev, struct drm_master *master); 54 int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev); 55 56 struct virtio_gpu_object { 57 struct drm_gem_object gem_base; 58 uint32_t hw_res_handle; 59 60 struct sg_table *pages; 61 void *vmap; 62 bool dumb; 63 struct ttm_place placement_code; 64 struct ttm_placement placement; 65 struct ttm_buffer_object tbo; 66 struct ttm_bo_kmap_obj kmap; 67 }; 68 #define gem_to_virtio_gpu_obj(gobj) \ 69 container_of((gobj), struct virtio_gpu_object, gem_base) 70 71 struct virtio_gpu_vbuffer; 72 struct virtio_gpu_device; 73 74 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev, 75 struct virtio_gpu_vbuffer *vbuf); 76 77 struct virtio_gpu_fence_driver { 78 atomic64_t last_seq; 79 uint64_t sync_seq; 80 struct list_head fences; 81 spinlock_t lock; 82 }; 83 84 struct virtio_gpu_fence { 85 struct fence f; 86 struct virtio_gpu_fence_driver *drv; 87 struct list_head node; 88 uint64_t seq; 89 }; 90 #define to_virtio_fence(x) \ 91 container_of(x, struct virtio_gpu_fence, f) 92 93 struct virtio_gpu_vbuffer { 94 char *buf; 95 int size; 96 97 void *data_buf; 98 uint32_t data_size; 99 100 char *resp_buf; 101 int resp_size; 102 103 virtio_gpu_resp_cb resp_cb; 104 105 struct list_head list; 106 }; 107 108 struct virtio_gpu_output { 109 int index; 110 struct drm_crtc crtc; 111 struct drm_connector conn; 112 struct drm_encoder enc; 113 struct virtio_gpu_display_one info; 114 struct virtio_gpu_update_cursor cursor; 115 int cur_x; 116 int cur_y; 117 }; 118 #define drm_crtc_to_virtio_gpu_output(x) \ 119 container_of(x, struct virtio_gpu_output, crtc) 120 #define drm_connector_to_virtio_gpu_output(x) \ 121 container_of(x, struct virtio_gpu_output, conn) 122 #define drm_encoder_to_virtio_gpu_output(x) \ 123 container_of(x, struct virtio_gpu_output, enc) 124 125 struct virtio_gpu_framebuffer { 126 struct drm_framebuffer base; 127 struct drm_gem_object *obj; 128 int x1, y1, x2, y2; /* dirty rect */ 129 spinlock_t dirty_lock; 130 uint32_t hw_res_handle; 131 }; 132 #define to_virtio_gpu_framebuffer(x) \ 133 container_of(x, struct virtio_gpu_framebuffer, base) 134 135 struct virtio_gpu_mman { 136 struct ttm_bo_global_ref bo_global_ref; 137 struct drm_global_reference mem_global_ref; 138 bool mem_global_referenced; 139 struct ttm_bo_device bdev; 140 }; 141 142 struct virtio_gpu_fbdev; 143 144 struct virtio_gpu_queue { 145 struct virtqueue *vq; 146 spinlock_t qlock; 147 wait_queue_head_t ack_queue; 148 struct work_struct dequeue_work; 149 }; 150 151 struct virtio_gpu_drv_capset { 152 uint32_t id; 153 uint32_t max_version; 154 uint32_t max_size; 155 }; 156 157 struct virtio_gpu_drv_cap_cache { 158 struct list_head head; 159 void *caps_cache; 160 uint32_t id; 161 uint32_t version; 162 uint32_t size; 163 atomic_t is_valid; 164 }; 165 166 struct virtio_gpu_device { 167 struct device *dev; 168 struct drm_device *ddev; 169 170 struct virtio_device *vdev; 171 172 struct virtio_gpu_mman mman; 173 174 /* pointer to fbdev info structure */ 175 struct virtio_gpu_fbdev *vgfbdev; 176 struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS]; 177 uint32_t num_scanouts; 178 179 struct virtio_gpu_queue ctrlq; 180 struct virtio_gpu_queue cursorq; 181 struct list_head free_vbufs; 182 spinlock_t free_vbufs_lock; 183 void *vbufs; 184 bool vqs_ready; 185 186 struct idr resource_idr; 187 spinlock_t resource_idr_lock; 188 189 wait_queue_head_t resp_wq; 190 /* current display info */ 191 spinlock_t display_info_lock; 192 bool display_info_pending; 193 194 struct virtio_gpu_fence_driver fence_drv; 195 196 struct idr ctx_id_idr; 197 spinlock_t ctx_id_idr_lock; 198 199 bool has_virgl_3d; 200 201 struct work_struct config_changed_work; 202 203 struct virtio_gpu_drv_capset *capsets; 204 uint32_t num_capsets; 205 struct list_head cap_cache; 206 }; 207 208 struct virtio_gpu_fpriv { 209 uint32_t ctx_id; 210 }; 211 212 /* virtio_ioctl.c */ 213 #define DRM_VIRTIO_NUM_IOCTLS 10 214 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS]; 215 216 /* virtio_kms.c */ 217 int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags); 218 int virtio_gpu_driver_unload(struct drm_device *dev); 219 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file); 220 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file); 221 222 /* virtio_gem.c */ 223 void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj); 224 int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev); 225 void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev); 226 int virtio_gpu_gem_create(struct drm_file *file, 227 struct drm_device *dev, 228 uint64_t size, 229 struct drm_gem_object **obj_p, 230 uint32_t *handle_p); 231 int virtio_gpu_gem_object_open(struct drm_gem_object *obj, 232 struct drm_file *file); 233 void virtio_gpu_gem_object_close(struct drm_gem_object *obj, 234 struct drm_file *file); 235 struct virtio_gpu_object *virtio_gpu_alloc_object(struct drm_device *dev, 236 size_t size, bool kernel, 237 bool pinned); 238 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv, 239 struct drm_device *dev, 240 struct drm_mode_create_dumb *args); 241 int virtio_gpu_mode_dumb_destroy(struct drm_file *file_priv, 242 struct drm_device *dev, 243 uint32_t handle); 244 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv, 245 struct drm_device *dev, 246 uint32_t handle, uint64_t *offset_p); 247 248 /* virtio_fb */ 249 #define VIRTIO_GPUFB_CONN_LIMIT 1 250 int virtio_gpu_fbdev_init(struct virtio_gpu_device *vgdev); 251 void virtio_gpu_fbdev_fini(struct virtio_gpu_device *vgdev); 252 int virtio_gpu_surface_dirty(struct virtio_gpu_framebuffer *qfb, 253 struct drm_clip_rect *clips, 254 unsigned num_clips); 255 /* virtio vg */ 256 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev); 257 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev); 258 void virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev, 259 uint32_t *resid); 260 void virtio_gpu_resource_id_put(struct virtio_gpu_device *vgdev, uint32_t id); 261 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev, 262 uint32_t resource_id, 263 uint32_t format, 264 uint32_t width, 265 uint32_t height); 266 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev, 267 uint32_t resource_id); 268 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev, 269 uint32_t resource_id, uint64_t offset, 270 __le32 width, __le32 height, 271 __le32 x, __le32 y, 272 struct virtio_gpu_fence **fence); 273 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev, 274 uint32_t resource_id, 275 uint32_t x, uint32_t y, 276 uint32_t width, uint32_t height); 277 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev, 278 uint32_t scanout_id, uint32_t resource_id, 279 uint32_t width, uint32_t height, 280 uint32_t x, uint32_t y); 281 int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev, 282 struct virtio_gpu_object *obj, 283 uint32_t resource_id, 284 struct virtio_gpu_fence **fence); 285 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev); 286 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev); 287 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev, 288 struct virtio_gpu_output *output); 289 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev); 290 void virtio_gpu_cmd_resource_inval_backing(struct virtio_gpu_device *vgdev, 291 uint32_t resource_id); 292 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx); 293 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev, 294 int idx, int version, 295 struct virtio_gpu_drv_cap_cache **cache_p); 296 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id, 297 uint32_t nlen, const char *name); 298 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev, 299 uint32_t id); 300 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev, 301 uint32_t ctx_id, 302 uint32_t resource_id); 303 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev, 304 uint32_t ctx_id, 305 uint32_t resource_id); 306 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev, 307 void *data, uint32_t data_size, 308 uint32_t ctx_id, struct virtio_gpu_fence **fence); 309 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev, 310 uint32_t resource_id, uint32_t ctx_id, 311 uint64_t offset, uint32_t level, 312 struct virtio_gpu_box *box, 313 struct virtio_gpu_fence **fence); 314 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev, 315 uint32_t resource_id, uint32_t ctx_id, 316 uint64_t offset, uint32_t level, 317 struct virtio_gpu_box *box, 318 struct virtio_gpu_fence **fence); 319 void 320 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev, 321 struct virtio_gpu_resource_create_3d *rc_3d, 322 struct virtio_gpu_fence **fence); 323 void virtio_gpu_ctrl_ack(struct virtqueue *vq); 324 void virtio_gpu_cursor_ack(struct virtqueue *vq); 325 void virtio_gpu_fence_ack(struct virtqueue *vq); 326 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work); 327 void virtio_gpu_dequeue_cursor_func(struct work_struct *work); 328 void virtio_gpu_dequeue_fence_func(struct work_struct *work); 329 330 /* virtio_gpu_display.c */ 331 int virtio_gpu_framebuffer_init(struct drm_device *dev, 332 struct virtio_gpu_framebuffer *vgfb, 333 struct drm_mode_fb_cmd2 *mode_cmd, 334 struct drm_gem_object *obj); 335 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev); 336 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev); 337 338 /* virtio_gpu_plane.c */ 339 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev, 340 int index); 341 342 /* virtio_gpu_ttm.c */ 343 int virtio_gpu_ttm_init(struct virtio_gpu_device *vgdev); 344 void virtio_gpu_ttm_fini(struct virtio_gpu_device *vgdev); 345 int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma); 346 347 /* virtio_gpu_fence.c */ 348 int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev, 349 struct virtio_gpu_ctrl_hdr *cmd_hdr, 350 struct virtio_gpu_fence **fence); 351 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev, 352 u64 last_seq); 353 354 /* virtio_gpu_object */ 355 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, 356 unsigned long size, bool kernel, bool pinned, 357 struct virtio_gpu_object **bo_ptr); 358 int virtio_gpu_object_kmap(struct virtio_gpu_object *bo, void **ptr); 359 int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev, 360 struct virtio_gpu_object *bo); 361 void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo); 362 int virtio_gpu_object_wait(struct virtio_gpu_object *bo, bool no_wait); 363 364 /* virtgpu_prime.c */ 365 int virtgpu_gem_prime_pin(struct drm_gem_object *obj); 366 void virtgpu_gem_prime_unpin(struct drm_gem_object *obj); 367 struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj); 368 struct drm_gem_object *virtgpu_gem_prime_import_sg_table( 369 struct drm_device *dev, struct dma_buf_attachment *attach, 370 struct sg_table *sgt); 371 void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj); 372 void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 373 int virtgpu_gem_prime_mmap(struct drm_gem_object *obj, 374 struct vm_area_struct *vma); 375 376 static inline struct virtio_gpu_object* 377 virtio_gpu_object_ref(struct virtio_gpu_object *bo) 378 { 379 ttm_bo_reference(&bo->tbo); 380 return bo; 381 } 382 383 static inline void virtio_gpu_object_unref(struct virtio_gpu_object **bo) 384 { 385 struct ttm_buffer_object *tbo; 386 387 if ((*bo) == NULL) 388 return; 389 tbo = &((*bo)->tbo); 390 ttm_bo_unref(&tbo); 391 if (tbo == NULL) 392 *bo = NULL; 393 } 394 395 static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo) 396 { 397 return drm_vma_node_offset_addr(&bo->tbo.vma_node); 398 } 399 400 static inline int virtio_gpu_object_reserve(struct virtio_gpu_object *bo, 401 bool no_wait) 402 { 403 int r; 404 405 r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, NULL); 406 if (unlikely(r != 0)) { 407 if (r != -ERESTARTSYS) { 408 struct virtio_gpu_device *qdev = 409 bo->gem_base.dev->dev_private; 410 dev_err(qdev->dev, "%p reserve failed\n", bo); 411 } 412 return r; 413 } 414 return 0; 415 } 416 417 static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object *bo) 418 { 419 ttm_bo_unreserve(&bo->tbo); 420 } 421 422 /* virgl debufs */ 423 int virtio_gpu_debugfs_init(struct drm_minor *minor); 424 void virtio_gpu_debugfs_takedown(struct drm_minor *minor); 425 426 #endif 427
Indexes created Tue Oct 21 16:10:11 GMT 2025