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_crtc_helper.h> 37 #include <ttm/ttm_bo_api.h> 38 #include <ttm/ttm_bo_driver.h> 39 #include <ttm/ttm_placement.h> 40 #include <ttm/ttm_module.h> 41 42 #define DRIVER_NAME "virtio_gpu" 43 #define DRIVER_DESC "virtio GPU" 44 #define DRIVER_DATE "0" 45 46 #define DRIVER_MAJOR 0 47 #define DRIVER_MINOR 0 48 #define DRIVER_PATCHLEVEL 1 49 50 /* virtgpu_drm_bus.c */ 51 int drm_virtio_set_busid(struct drm_device *dev, struct drm_master *master); 52 int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev); 53 54 struct virtio_gpu_object { 55 struct drm_gem_object gem_base; 56 uint32_t hw_res_handle; 57 58 struct sg_table *pages; 59 void *vmap; 60 bool dumb; 61 struct ttm_place placement_code; 62 struct ttm_placement placement; 63 struct ttm_buffer_object tbo; 64 struct ttm_bo_kmap_obj kmap; 65 }; 66 #define gem_to_virtio_gpu_obj(gobj) \ 67 container_of((gobj), struct virtio_gpu_object, gem_base) 68 69 struct virtio_gpu_vbuffer; 70 struct virtio_gpu_device; 71 72 typedef void (*virtio_gpu_resp_cb)(struct virtio_gpu_device *vgdev, 73 struct virtio_gpu_vbuffer *vbuf); 74 75 struct virtio_gpu_fence_driver { 76 atomic64_t last_seq; 77 uint64_t sync_seq; 78 struct list_head fences; 79 spinlock_t lock; 80 }; 81 82 struct virtio_gpu_fence { 83 struct fence f; 84 struct virtio_gpu_fence_driver *drv; 85 struct list_head node; 86 uint64_t seq; 87 }; 88 #define to_virtio_fence(x) \ 89 container_of(x, struct virtio_gpu_fence, f) 90 91 struct virtio_gpu_vbuffer { 92 char *buf; 93 int size; 94 95 void *data_buf; 96 uint32_t data_size; 97 98 char *resp_buf; 99 int resp_size; 100 101 virtio_gpu_resp_cb resp_cb; 102 103 struct list_head list; 104 }; 105 106 struct virtio_gpu_output { 107 int index; 108 struct drm_crtc crtc; 109 struct drm_connector conn; 110 struct drm_encoder enc; 111 struct virtio_gpu_display_one info; 112 struct virtio_gpu_update_cursor cursor; 113 int cur_x; 114 int cur_y; 115 }; 116 #define drm_crtc_to_virtio_gpu_output(x) \ 117 container_of(x, struct virtio_gpu_output, crtc) 118 #define drm_connector_to_virtio_gpu_output(x) \ 119 container_of(x, struct virtio_gpu_output, conn) 120 #define drm_encoder_to_virtio_gpu_output(x) \ 121 container_of(x, struct virtio_gpu_output, enc) 122 123 struct virtio_gpu_framebuffer { 124 struct drm_framebuffer base; 125 struct drm_gem_object *obj; 126 int x1, y1, x2, y2; /* dirty rect */ 127 spinlock_t dirty_lock; 128 uint32_t hw_res_handle; 129 }; 130 #define to_virtio_gpu_framebuffer(x) \ 131 container_of(x, struct virtio_gpu_framebuffer, base) 132 133 struct virtio_gpu_mman { 134 struct ttm_bo_global_ref bo_global_ref; 135 struct drm_global_reference mem_global_ref; 136 bool mem_global_referenced; 137 struct ttm_bo_device bdev; 138 }; 139 140 struct virtio_gpu_fbdev; 141 142 struct virtio_gpu_queue { 143 struct virtqueue *vq; 144 spinlock_t qlock; 145 wait_queue_head_t ack_queue; 146 struct work_struct dequeue_work; 147 }; 148 149 struct virtio_gpu_drv_capset { 150 uint32_t id; 151 uint32_t max_version; 152 uint32_t max_size; 153 }; 154 155 struct virtio_gpu_drv_cap_cache { 156 struct list_head head; 157 void *caps_cache; 158 uint32_t id; 159 uint32_t version; 160 uint32_t size; 161 atomic_t is_valid; 162 }; 163 164 struct virtio_gpu_device { 165 struct device *dev; 166 struct drm_device *ddev; 167 168 struct virtio_device *vdev; 169 170 struct virtio_gpu_mman mman; 171 172 /* pointer to fbdev info structure */ 173 struct virtio_gpu_fbdev *vgfbdev; 174 struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS]; 175 uint32_t num_scanouts; 176 177 struct virtio_gpu_queue ctrlq; 178 struct virtio_gpu_queue cursorq; 179 struct list_head free_vbufs; 180 spinlock_t free_vbufs_lock; 181 void *vbufs; 182 bool vqs_ready; 183 184 struct idr resource_idr; 185 spinlock_t resource_idr_lock; 186 187 wait_queue_head_t resp_wq; 188 /* current display info */ 189 spinlock_t display_info_lock; 190 bool display_info_pending; 191 192 struct virtio_gpu_fence_driver fence_drv; 193 194 struct idr ctx_id_idr; 195 spinlock_t ctx_id_idr_lock; 196 197 bool has_virgl_3d; 198 199 struct work_struct config_changed_work; 200 201 struct virtio_gpu_drv_capset *capsets; 202 uint32_t num_capsets; 203 struct list_head cap_cache; 204 }; 205 206 struct virtio_gpu_fpriv { 207 uint32_t ctx_id; 208 }; 209 210 /* virtio_ioctl.c */ 211 #define DRM_VIRTIO_NUM_IOCTLS 10 212 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS]; 213 214 /* virtio_kms.c */ 215 int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags); 216 int virtio_gpu_driver_unload(struct drm_device *dev); 217 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file); 218 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file); 219 220 /* virtio_gem.c */ 221 void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj); 222 int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev); 223 void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev); 224 int virtio_gpu_gem_create(struct drm_file *file, 225 struct drm_device *dev, 226 uint64_t size, 227 struct drm_gem_object **obj_p, 228 uint32_t *handle_p); 229 int virtio_gpu_gem_object_open(struct drm_gem_object *obj, 230 struct drm_file *file); 231 void virtio_gpu_gem_object_close(struct drm_gem_object *obj, 232 struct drm_file *file); 233 struct virtio_gpu_object *virtio_gpu_alloc_object(struct drm_device *dev, 234 size_t size, bool kernel, 235 bool pinned); 236 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv, 237 struct drm_device *dev, 238 struct drm_mode_create_dumb *args); 239 int virtio_gpu_mode_dumb_destroy(struct drm_file *file_priv, 240 struct drm_device *dev, 241 uint32_t handle); 242 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv, 243 struct drm_device *dev, 244 uint32_t handle, uint64_t *offset_p); 245 246 /* virtio_fb */ 247 #define VIRTIO_GPUFB_CONN_LIMIT 1 248 int virtio_gpu_fbdev_init(struct virtio_gpu_device *vgdev); 249 void virtio_gpu_fbdev_fini(struct virtio_gpu_device *vgdev); 250 int virtio_gpu_surface_dirty(struct virtio_gpu_framebuffer *qfb, 251 struct drm_clip_rect *clips, 252 unsigned num_clips); 253 /* virtio vg */ 254 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev); 255 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev); 256 void virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev, 257 uint32_t *resid); 258 void virtio_gpu_resource_id_put(struct virtio_gpu_device *vgdev, uint32_t id); 259 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev, 260 uint32_t resource_id, 261 uint32_t format, 262 uint32_t width, 263 uint32_t height); 264 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev, 265 uint32_t resource_id); 266 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev, 267 uint32_t resource_id, 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 uint32_t resource_id, 282 struct virtio_gpu_fence **fence); 283 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev); 284 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev); 285 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev, 286 struct virtio_gpu_output *output); 287 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev); 288 void virtio_gpu_cmd_resource_inval_backing(struct virtio_gpu_device *vgdev, 289 uint32_t resource_id); 290 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx); 291 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev, 292 int idx, int version, 293 struct virtio_gpu_drv_cap_cache **cache_p); 294 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id, 295 uint32_t nlen, const char *name); 296 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev, 297 uint32_t id); 298 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev, 299 uint32_t ctx_id, 300 uint32_t resource_id); 301 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev, 302 uint32_t ctx_id, 303 uint32_t resource_id); 304 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev, 305 void *data, uint32_t data_size, 306 uint32_t ctx_id, struct virtio_gpu_fence **fence); 307 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev, 308 uint32_t resource_id, uint32_t ctx_id, 309 uint64_t offset, uint32_t level, 310 struct virtio_gpu_box *box, 311 struct virtio_gpu_fence **fence); 312 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev, 313 uint32_t resource_id, 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_resource_create_3d *rc_3d, 320 struct virtio_gpu_fence **fence); 321 void virtio_gpu_ctrl_ack(struct virtqueue *vq); 322 void virtio_gpu_cursor_ack(struct virtqueue *vq); 323 void virtio_gpu_fence_ack(struct virtqueue *vq); 324 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work); 325 void virtio_gpu_dequeue_cursor_func(struct work_struct *work); 326 void virtio_gpu_dequeue_fence_func(struct work_struct *work); 327 328 /* virtio_gpu_display.c */ 329 int virtio_gpu_framebuffer_init(struct drm_device *dev, 330 struct virtio_gpu_framebuffer *vgfb, 331 const struct drm_mode_fb_cmd2 *mode_cmd, 332 struct drm_gem_object *obj); 333 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev); 334 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev); 335 336 /* virtio_gpu_plane.c */ 337 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev, 338 int index); 339 340 /* virtio_gpu_ttm.c */ 341 int virtio_gpu_ttm_init(struct virtio_gpu_device *vgdev); 342 void virtio_gpu_ttm_fini(struct virtio_gpu_device *vgdev); 343 int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma); 344 345 /* virtio_gpu_fence.c */ 346 int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev, 347 struct virtio_gpu_ctrl_hdr *cmd_hdr, 348 struct virtio_gpu_fence **fence); 349 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev, 350 u64 last_seq); 351 352 /* virtio_gpu_object */ 353 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, 354 unsigned long size, bool kernel, bool pinned, 355 struct virtio_gpu_object **bo_ptr); 356 int virtio_gpu_object_kmap(struct virtio_gpu_object *bo, void **ptr); 357 int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev, 358 struct virtio_gpu_object *bo); 359 void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo); 360 int virtio_gpu_object_wait(struct virtio_gpu_object *bo, bool no_wait); 361 362 /* virtgpu_prime.c */ 363 int virtgpu_gem_prime_pin(struct drm_gem_object *obj); 364 void virtgpu_gem_prime_unpin(struct drm_gem_object *obj); 365 struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj); 366 struct drm_gem_object *virtgpu_gem_prime_import_sg_table( 367 struct drm_device *dev, struct dma_buf_attachment *attach, 368 struct sg_table *sgt); 369 void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj); 370 void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 371 int virtgpu_gem_prime_mmap(struct drm_gem_object *obj, 372 struct vm_area_struct *vma); 373 374 static inline struct virtio_gpu_object* 375 virtio_gpu_object_ref(struct virtio_gpu_object *bo) 376 { 377 ttm_bo_reference(&bo->tbo); 378 return bo; 379 } 380 381 static inline void virtio_gpu_object_unref(struct virtio_gpu_object **bo) 382 { 383 struct ttm_buffer_object *tbo; 384 385 if ((*bo) == NULL) 386 return; 387 tbo = &((*bo)->tbo); 388 ttm_bo_unref(&tbo); 389 if (tbo == NULL) 390 *bo = NULL; 391 } 392 393 static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo) 394 { 395 return drm_vma_node_offset_addr(&bo->tbo.vma_node); 396 } 397 398 static inline int virtio_gpu_object_reserve(struct virtio_gpu_object *bo, 399 bool no_wait) 400 { 401 int r; 402 403 r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL); 404 if (unlikely(r != 0)) { 405 if (r != -ERESTARTSYS) { 406 struct virtio_gpu_device *qdev = 407 bo->gem_base.dev->dev_private; 408 dev_err(qdev->dev, "%p reserve failed\n", bo); 409 } 410 return r; 411 } 412 return 0; 413 } 414 415 static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object *bo) 416 { 417 ttm_bo_unreserve(&bo->tbo); 418 } 419 420 /* virgl debufs */ 421 int virtio_gpu_debugfs_init(struct drm_minor *minor); 422 void virtio_gpu_debugfs_takedown(struct drm_minor *minor); 423 424 #endif 425