1 /* 2 * Copyright (C) 2015 Red Hat, Inc. 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 */ 25 26 #ifndef VIRTIO_DRV_H 27 #define VIRTIO_DRV_H 28 29 #include <linux/virtio.h> 30 #include <linux/virtio_ids.h> 31 #include <linux/virtio_config.h> 32 #include <linux/virtio_gpu.h> 33 34 #include <drm/drmP.h> 35 #include <drm/drm_gem.h> 36 #include <drm/drm_atomic.h> 37 #include <drm/drm_crtc_helper.h> 38 #include <drm/drm_encoder.h> 39 #include <drm/drm_fb_helper.h> 40 #include <drm/ttm/ttm_bo_api.h> 41 #include <drm/ttm/ttm_bo_driver.h> 42 #include <drm/ttm/ttm_placement.h> 43 #include <drm/ttm/ttm_module.h> 44 45 #define DRIVER_NAME "virtio_gpu" 46 #define DRIVER_DESC "virtio GPU" 47 #define DRIVER_DATE "0" 48 49 #define DRIVER_MAJOR 0 50 #define DRIVER_MINOR 1 51 #define DRIVER_PATCHLEVEL 0 52 53 /* virtgpu_drm_bus.c */ 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 uint32_t mapped; 62 void *vmap; 63 bool dumb; 64 struct ttm_place placement_code; 65 struct ttm_placement placement; 66 struct ttm_buffer_object tbo; 67 struct ttm_bo_kmap_obj kmap; 68 bool created; 69 }; 70 #define gem_to_virtio_gpu_obj(gobj) \ 71 container_of((gobj), struct virtio_gpu_object, gem_base) 72 73 struct virtio_gpu_vbuffer; 74 struct virtio_gpu_device; 75 76 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev, 77 struct virtio_gpu_vbuffer *vbuf); 78 79 struct virtio_gpu_fence_driver { 80 atomic64_t last_seq; 81 uint64_t sync_seq; 82 uint64_t context; 83 struct list_head fences; 84 spinlock_t lock; 85 }; 86 87 struct virtio_gpu_fence { 88 struct dma_fence f; 89 struct virtio_gpu_fence_driver *drv; 90 struct list_head node; 91 uint64_t seq; 92 }; 93 #define to_virtio_fence(x) \ 94 container_of(x, struct virtio_gpu_fence, f) 95 96 struct virtio_gpu_vbuffer { 97 char *buf; 98 int size; 99 100 void *data_buf; 101 uint32_t data_size; 102 103 char *resp_buf; 104 int resp_size; 105 106 virtio_gpu_resp_cb resp_cb; 107 108 struct list_head list; 109 }; 110 111 struct virtio_gpu_output { 112 int index; 113 struct drm_crtc crtc; 114 struct drm_connector conn; 115 struct drm_encoder enc; 116 struct virtio_gpu_display_one info; 117 struct virtio_gpu_update_cursor cursor; 118 struct edid *edid; 119 int cur_x; 120 int cur_y; 121 bool enabled; 122 }; 123 #define drm_crtc_to_virtio_gpu_output(x) \ 124 container_of(x, struct virtio_gpu_output, crtc) 125 #define drm_connector_to_virtio_gpu_output(x) \ 126 container_of(x, struct virtio_gpu_output, conn) 127 #define drm_encoder_to_virtio_gpu_output(x) \ 128 container_of(x, struct virtio_gpu_output, enc) 129 130 struct virtio_gpu_framebuffer { 131 struct drm_framebuffer base; 132 int x1, y1, x2, y2; /* dirty rect */ 133 spinlock_t dirty_lock; 134 uint32_t hw_res_handle; 135 struct virtio_gpu_fence *fence; 136 }; 137 #define to_virtio_gpu_framebuffer(x) \ 138 container_of(x, struct virtio_gpu_framebuffer, base) 139 140 struct virtio_gpu_fbdev { 141 struct drm_fb_helper helper; 142 struct virtio_gpu_framebuffer vgfb; 143 struct virtio_gpu_device *vgdev; 144 struct delayed_work work; 145 }; 146 147 struct virtio_gpu_mman { 148 struct ttm_bo_device bdev; 149 }; 150 151 struct virtio_gpu_fbdev; 152 153 struct virtio_gpu_queue { 154 struct virtqueue *vq; 155 spinlock_t qlock; 156 wait_queue_head_t ack_queue; 157 struct work_struct dequeue_work; 158 }; 159 160 struct virtio_gpu_drv_capset { 161 uint32_t id; 162 uint32_t max_version; 163 uint32_t max_size; 164 }; 165 166 struct virtio_gpu_drv_cap_cache { 167 struct list_head head; 168 void *caps_cache; 169 uint32_t id; 170 uint32_t version; 171 uint32_t size; 172 atomic_t is_valid; 173 }; 174 175 struct virtio_gpu_device { 176 struct device *dev; 177 struct drm_device *ddev; 178 179 struct virtio_device *vdev; 180 181 struct virtio_gpu_mman mman; 182 183 /* pointer to fbdev info structure */ 184 struct virtio_gpu_fbdev *vgfbdev; 185 struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS]; 186 uint32_t num_scanouts; 187 188 struct virtio_gpu_queue ctrlq; 189 struct virtio_gpu_queue cursorq; 190 struct kmem_cache *vbufs; 191 bool vqs_ready; 192 193 struct ida resource_ida; 194 195 wait_queue_head_t resp_wq; 196 /* current display info */ 197 spinlock_t display_info_lock; 198 bool display_info_pending; 199 200 struct virtio_gpu_fence_driver fence_drv; 201 202 struct ida ctx_id_ida; 203 204 bool has_virgl_3d; 205 bool has_edid; 206 207 struct work_struct config_changed_work; 208 209 struct virtio_gpu_drv_capset *capsets; 210 uint32_t num_capsets; 211 struct list_head cap_cache; 212 }; 213 214 struct virtio_gpu_fpriv { 215 uint32_t ctx_id; 216 }; 217 218 /* virtio_ioctl.c */ 219 #define DRM_VIRTIO_NUM_IOCTLS 10 220 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS]; 221 222 /* virtio_kms.c */ 223 int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags); 224 void virtio_gpu_driver_unload(struct drm_device *dev); 225 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file); 226 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file); 227 228 /* virtio_gem.c */ 229 void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj); 230 int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev); 231 void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev); 232 int virtio_gpu_gem_create(struct drm_file *file, 233 struct drm_device *dev, 234 uint64_t size, 235 struct drm_gem_object **obj_p, 236 uint32_t *handle_p); 237 int virtio_gpu_gem_object_open(struct drm_gem_object *obj, 238 struct drm_file *file); 239 void virtio_gpu_gem_object_close(struct drm_gem_object *obj, 240 struct drm_file *file); 241 struct virtio_gpu_object *virtio_gpu_alloc_object(struct drm_device *dev, 242 size_t size, bool kernel, 243 bool pinned); 244 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv, 245 struct drm_device *dev, 246 struct drm_mode_create_dumb *args); 247 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv, 248 struct drm_device *dev, 249 uint32_t handle, uint64_t *offset_p); 250 251 /* virtio_fb */ 252 #define VIRTIO_GPUFB_CONN_LIMIT 1 253 int virtio_gpu_fbdev_init(struct virtio_gpu_device *vgdev); 254 void virtio_gpu_fbdev_fini(struct virtio_gpu_device *vgdev); 255 int virtio_gpu_surface_dirty(struct virtio_gpu_framebuffer *qfb, 256 struct drm_clip_rect *clips, 257 unsigned int num_clips); 258 /* virtio vg */ 259 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev); 260 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev); 261 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev, 262 struct virtio_gpu_object *bo, 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 struct virtio_gpu_object *bo, 270 uint64_t offset, 271 __le32 width, __le32 height, 272 __le32 x, __le32 y, 273 struct virtio_gpu_fence *fence); 274 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev, 275 uint32_t resource_id, 276 uint32_t x, uint32_t y, 277 uint32_t width, uint32_t height); 278 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev, 279 uint32_t scanout_id, uint32_t resource_id, 280 uint32_t width, uint32_t height, 281 uint32_t x, uint32_t y); 282 int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev, 283 struct virtio_gpu_object *obj, 284 struct virtio_gpu_fence *fence); 285 void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev, 286 struct virtio_gpu_object *obj); 287 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev); 288 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev); 289 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev, 290 struct virtio_gpu_output *output); 291 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev); 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 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev); 297 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id, 298 uint32_t nlen, const char *name); 299 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev, 300 uint32_t id); 301 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev, 302 uint32_t ctx_id, 303 uint32_t resource_id); 304 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev, 305 uint32_t ctx_id, 306 uint32_t resource_id); 307 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev, 308 void *data, uint32_t data_size, 309 uint32_t ctx_id, struct virtio_gpu_fence *fence); 310 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev, 311 uint32_t resource_id, uint32_t ctx_id, 312 uint64_t offset, uint32_t level, 313 struct virtio_gpu_box *box, 314 struct virtio_gpu_fence *fence); 315 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev, 316 struct virtio_gpu_object *bo, 317 uint32_t ctx_id, 318 uint64_t offset, uint32_t level, 319 struct virtio_gpu_box *box, 320 struct virtio_gpu_fence *fence); 321 void 322 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev, 323 struct virtio_gpu_object *bo, 324 struct virtio_gpu_resource_create_3d *rc_3d); 325 void virtio_gpu_ctrl_ack(struct virtqueue *vq); 326 void virtio_gpu_cursor_ack(struct virtqueue *vq); 327 void virtio_gpu_fence_ack(struct virtqueue *vq); 328 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work); 329 void virtio_gpu_dequeue_cursor_func(struct work_struct *work); 330 void virtio_gpu_dequeue_fence_func(struct work_struct *work); 331 332 /* virtio_gpu_display.c */ 333 int virtio_gpu_framebuffer_init(struct drm_device *dev, 334 struct virtio_gpu_framebuffer *vgfb, 335 const struct drm_mode_fb_cmd2 *mode_cmd, 336 struct drm_gem_object *obj); 337 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev); 338 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev); 339 340 /* virtio_gpu_plane.c */ 341 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc); 342 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev, 343 enum drm_plane_type type, 344 int index); 345 346 /* virtio_gpu_ttm.c */ 347 int virtio_gpu_ttm_init(struct virtio_gpu_device *vgdev); 348 void virtio_gpu_ttm_fini(struct virtio_gpu_device *vgdev); 349 int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma); 350 351 /* virtio_gpu_fence.c */ 352 struct virtio_gpu_fence *virtio_gpu_fence_alloc( 353 struct virtio_gpu_device *vgdev); 354 void virtio_gpu_fence_cleanup(struct virtio_gpu_fence *fence); 355 int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev, 356 struct virtio_gpu_ctrl_hdr *cmd_hdr, 357 struct virtio_gpu_fence *fence); 358 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev, 359 u64 last_seq); 360 361 /* virtio_gpu_object */ 362 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, 363 unsigned long size, bool kernel, bool pinned, 364 struct virtio_gpu_object **bo_ptr); 365 void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo); 366 int virtio_gpu_object_kmap(struct virtio_gpu_object *bo); 367 int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev, 368 struct virtio_gpu_object *bo); 369 void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo); 370 int virtio_gpu_object_wait(struct virtio_gpu_object *bo, bool no_wait); 371 372 /* virtgpu_prime.c */ 373 int virtgpu_gem_prime_pin(struct drm_gem_object *obj); 374 void virtgpu_gem_prime_unpin(struct drm_gem_object *obj); 375 void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj); 376 void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 377 int virtgpu_gem_prime_mmap(struct drm_gem_object *obj, 378 struct vm_area_struct *vma); 379 380 static inline struct virtio_gpu_object* 381 virtio_gpu_object_ref(struct virtio_gpu_object *bo) 382 { 383 ttm_bo_get(&bo->tbo); 384 return bo; 385 } 386 387 static inline void virtio_gpu_object_unref(struct virtio_gpu_object **bo) 388 { 389 struct ttm_buffer_object *tbo; 390 391 if ((*bo) == NULL) 392 return; 393 tbo = &((*bo)->tbo); 394 ttm_bo_put(tbo); 395 *bo = NULL; 396 } 397 398 static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo) 399 { 400 return drm_vma_node_offset_addr(&bo->tbo.vma_node); 401 } 402 403 static inline int virtio_gpu_object_reserve(struct virtio_gpu_object *bo, 404 bool no_wait) 405 { 406 int r; 407 408 r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL); 409 if (unlikely(r != 0)) { 410 if (r != -ERESTARTSYS) { 411 struct virtio_gpu_device *qdev = 412 bo->gem_base.dev->dev_private; 413 dev_err(qdev->dev, "%p reserve failed\n", bo); 414 } 415 return r; 416 } 417 return 0; 418 } 419 420 static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object *bo) 421 { 422 ttm_bo_unreserve(&bo->tbo); 423 } 424 425 /* virgl debufs */ 426 int virtio_gpu_debugfs_init(struct drm_minor *minor); 427 428 #endif 429