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 0 51 #define DRIVER_PATCHLEVEL 1 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 int cur_x; 119 int cur_y; 120 bool enabled; 121 }; 122 #define drm_crtc_to_virtio_gpu_output(x) \ 123 container_of(x, struct virtio_gpu_output, crtc) 124 #define drm_connector_to_virtio_gpu_output(x) \ 125 container_of(x, struct virtio_gpu_output, conn) 126 #define drm_encoder_to_virtio_gpu_output(x) \ 127 container_of(x, struct virtio_gpu_output, enc) 128 129 struct virtio_gpu_framebuffer { 130 struct drm_framebuffer base; 131 int x1, y1, x2, y2; /* dirty rect */ 132 spinlock_t dirty_lock; 133 uint32_t hw_res_handle; 134 }; 135 #define to_virtio_gpu_framebuffer(x) \ 136 container_of(x, struct virtio_gpu_framebuffer, base) 137 138 struct virtio_gpu_fbdev { 139 struct drm_fb_helper helper; 140 struct virtio_gpu_framebuffer vgfb; 141 struct virtio_gpu_device *vgdev; 142 struct delayed_work work; 143 }; 144 145 struct virtio_gpu_mman { 146 struct ttm_bo_device bdev; 147 }; 148 149 struct virtio_gpu_fbdev; 150 151 struct virtio_gpu_queue { 152 struct virtqueue *vq; 153 spinlock_t qlock; 154 wait_queue_head_t ack_queue; 155 struct work_struct dequeue_work; 156 }; 157 158 struct virtio_gpu_drv_capset { 159 uint32_t id; 160 uint32_t max_version; 161 uint32_t max_size; 162 }; 163 164 struct virtio_gpu_drv_cap_cache { 165 struct list_head head; 166 void *caps_cache; 167 uint32_t id; 168 uint32_t version; 169 uint32_t size; 170 atomic_t is_valid; 171 }; 172 173 struct virtio_gpu_device { 174 struct device *dev; 175 struct drm_device *ddev; 176 177 struct virtio_device *vdev; 178 179 struct virtio_gpu_mman mman; 180 181 /* pointer to fbdev info structure */ 182 struct virtio_gpu_fbdev *vgfbdev; 183 struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS]; 184 uint32_t num_scanouts; 185 186 struct virtio_gpu_queue ctrlq; 187 struct virtio_gpu_queue cursorq; 188 struct kmem_cache *vbufs; 189 bool vqs_ready; 190 191 struct ida resource_ida; 192 193 wait_queue_head_t resp_wq; 194 /* current display info */ 195 spinlock_t display_info_lock; 196 bool display_info_pending; 197 198 struct virtio_gpu_fence_driver fence_drv; 199 200 struct ida ctx_id_ida; 201 202 bool has_virgl_3d; 203 204 struct work_struct config_changed_work; 205 206 struct virtio_gpu_drv_capset *capsets; 207 uint32_t num_capsets; 208 struct list_head cap_cache; 209 }; 210 211 struct virtio_gpu_fpriv { 212 uint32_t ctx_id; 213 }; 214 215 /* virtio_ioctl.c */ 216 #define DRM_VIRTIO_NUM_IOCTLS 10 217 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS]; 218 219 /* virtio_kms.c */ 220 int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags); 221 void virtio_gpu_driver_unload(struct drm_device *dev); 222 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file); 223 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file); 224 225 /* virtio_gem.c */ 226 void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj); 227 int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev); 228 void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev); 229 int virtio_gpu_gem_create(struct drm_file *file, 230 struct drm_device *dev, 231 uint64_t size, 232 struct drm_gem_object **obj_p, 233 uint32_t *handle_p); 234 int virtio_gpu_gem_object_open(struct drm_gem_object *obj, 235 struct drm_file *file); 236 void virtio_gpu_gem_object_close(struct drm_gem_object *obj, 237 struct drm_file *file); 238 struct virtio_gpu_object *virtio_gpu_alloc_object(struct drm_device *dev, 239 size_t size, bool kernel, 240 bool pinned); 241 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv, 242 struct drm_device *dev, 243 struct drm_mode_create_dumb *args); 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 int 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_cmd_create_resource(struct virtio_gpu_device *vgdev, 259 struct virtio_gpu_object *bo, 260 uint32_t format, 261 uint32_t width, 262 uint32_t height); 263 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev, 264 uint32_t resource_id); 265 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev, 266 struct virtio_gpu_object *bo, 267 uint64_t offset, 268 __le32 width, __le32 height, 269 __le32 x, __le32 y, 270 struct virtio_gpu_fence **fence); 271 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev, 272 uint32_t resource_id, 273 uint32_t x, uint32_t y, 274 uint32_t width, uint32_t height); 275 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev, 276 uint32_t scanout_id, uint32_t resource_id, 277 uint32_t width, uint32_t height, 278 uint32_t x, uint32_t y); 279 int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev, 280 struct virtio_gpu_object *obj, 281 struct virtio_gpu_fence **fence); 282 void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev, 283 struct virtio_gpu_object *obj); 284 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev); 285 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev); 286 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev, 287 struct virtio_gpu_output *output); 288 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev); 289 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx); 290 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev, 291 int idx, int version, 292 struct virtio_gpu_drv_cap_cache **cache_p); 293 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id, 294 uint32_t nlen, const char *name); 295 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev, 296 uint32_t id); 297 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev, 298 uint32_t ctx_id, 299 uint32_t resource_id); 300 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev, 301 uint32_t ctx_id, 302 uint32_t resource_id); 303 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev, 304 void *data, uint32_t data_size, 305 uint32_t ctx_id, struct virtio_gpu_fence **fence); 306 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev, 307 uint32_t resource_id, uint32_t ctx_id, 308 uint64_t offset, uint32_t level, 309 struct virtio_gpu_box *box, 310 struct virtio_gpu_fence **fence); 311 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev, 312 struct virtio_gpu_object *bo, 313 uint32_t ctx_id, 314 uint64_t offset, uint32_t level, 315 struct virtio_gpu_box *box, 316 struct virtio_gpu_fence **fence); 317 void 318 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev, 319 struct virtio_gpu_object *bo, 320 struct virtio_gpu_resource_create_3d *rc_3d, 321 struct virtio_gpu_fence **fence); 322 void virtio_gpu_ctrl_ack(struct virtqueue *vq); 323 void virtio_gpu_cursor_ack(struct virtqueue *vq); 324 void virtio_gpu_fence_ack(struct virtqueue *vq); 325 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work); 326 void virtio_gpu_dequeue_cursor_func(struct work_struct *work); 327 void virtio_gpu_dequeue_fence_func(struct work_struct *work); 328 329 /* virtio_gpu_display.c */ 330 int virtio_gpu_framebuffer_init(struct drm_device *dev, 331 struct virtio_gpu_framebuffer *vgfb, 332 const struct drm_mode_fb_cmd2 *mode_cmd, 333 struct drm_gem_object *obj); 334 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev); 335 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev); 336 337 /* virtio_gpu_plane.c */ 338 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc); 339 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev, 340 enum drm_plane_type type, 341 int index); 342 343 /* virtio_gpu_ttm.c */ 344 int virtio_gpu_ttm_init(struct virtio_gpu_device *vgdev); 345 void virtio_gpu_ttm_fini(struct virtio_gpu_device *vgdev); 346 int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma); 347 348 /* virtio_gpu_fence.c */ 349 int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev, 350 struct virtio_gpu_ctrl_hdr *cmd_hdr, 351 struct virtio_gpu_fence **fence); 352 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev, 353 u64 last_seq); 354 355 /* virtio_gpu_object */ 356 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, 357 unsigned long size, bool kernel, bool pinned, 358 struct virtio_gpu_object **bo_ptr); 359 void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo); 360 int virtio_gpu_object_kmap(struct virtio_gpu_object *bo); 361 int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev, 362 struct virtio_gpu_object *bo); 363 void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo); 364 int virtio_gpu_object_wait(struct virtio_gpu_object *bo, bool no_wait); 365 366 /* virtgpu_prime.c */ 367 int virtgpu_gem_prime_pin(struct drm_gem_object *obj); 368 void virtgpu_gem_prime_unpin(struct drm_gem_object *obj); 369 struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj); 370 struct drm_gem_object *virtgpu_gem_prime_import_sg_table( 371 struct drm_device *dev, struct dma_buf_attachment *attach, 372 struct sg_table *sgt); 373 void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj); 374 void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 375 int virtgpu_gem_prime_mmap(struct drm_gem_object *obj, 376 struct vm_area_struct *vma); 377 378 static inline struct virtio_gpu_object* 379 virtio_gpu_object_ref(struct virtio_gpu_object *bo) 380 { 381 ttm_bo_get(&bo->tbo); 382 return bo; 383 } 384 385 static inline void virtio_gpu_object_unref(struct virtio_gpu_object **bo) 386 { 387 struct ttm_buffer_object *tbo; 388 389 if ((*bo) == NULL) 390 return; 391 tbo = &((*bo)->tbo); 392 ttm_bo_put(tbo); 393 *bo = NULL; 394 } 395 396 static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo) 397 { 398 return drm_vma_node_offset_addr(&bo->tbo.vma_node); 399 } 400 401 static inline int virtio_gpu_object_reserve(struct virtio_gpu_object *bo, 402 bool no_wait) 403 { 404 int r; 405 406 r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL); 407 if (unlikely(r != 0)) { 408 if (r != -ERESTARTSYS) { 409 struct virtio_gpu_device *qdev = 410 bo->gem_base.dev->dev_private; 411 dev_err(qdev->dev, "%p reserve failed\n", bo); 412 } 413 return r; 414 } 415 return 0; 416 } 417 418 static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object *bo) 419 { 420 ttm_bo_unreserve(&bo->tbo); 421 } 422 423 /* virgl debufs */ 424 int virtio_gpu_debugfs_init(struct drm_minor *minor); 425 426 #endif 427