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_mman { 141 struct ttm_bo_device bdev; 142 }; 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 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 kmem_cache *vbufs; 180 bool vqs_ready; 181 182 struct ida resource_ida; 183 184 wait_queue_head_t resp_wq; 185 /* current display info */ 186 spinlock_t display_info_lock; 187 bool display_info_pending; 188 189 struct virtio_gpu_fence_driver fence_drv; 190 191 struct ida ctx_id_ida; 192 193 bool has_virgl_3d; 194 bool has_edid; 195 196 struct work_struct config_changed_work; 197 198 struct virtio_gpu_drv_capset *capsets; 199 uint32_t num_capsets; 200 struct list_head cap_cache; 201 }; 202 203 struct virtio_gpu_fpriv { 204 uint32_t ctx_id; 205 }; 206 207 /* virtio_ioctl.c */ 208 #define DRM_VIRTIO_NUM_IOCTLS 10 209 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS]; 210 211 /* virtio_kms.c */ 212 int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags); 213 void virtio_gpu_driver_unload(struct drm_device *dev); 214 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file); 215 void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file); 216 217 /* virtio_gem.c */ 218 void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj); 219 int virtio_gpu_gem_init(struct virtio_gpu_device *vgdev); 220 void virtio_gpu_gem_fini(struct virtio_gpu_device *vgdev); 221 int virtio_gpu_gem_create(struct drm_file *file, 222 struct drm_device *dev, 223 uint64_t size, 224 struct drm_gem_object **obj_p, 225 uint32_t *handle_p); 226 int virtio_gpu_gem_object_open(struct drm_gem_object *obj, 227 struct drm_file *file); 228 void virtio_gpu_gem_object_close(struct drm_gem_object *obj, 229 struct drm_file *file); 230 struct virtio_gpu_object *virtio_gpu_alloc_object(struct drm_device *dev, 231 size_t size, bool kernel, 232 bool pinned); 233 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv, 234 struct drm_device *dev, 235 struct drm_mode_create_dumb *args); 236 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv, 237 struct drm_device *dev, 238 uint32_t handle, uint64_t *offset_p); 239 240 /* virtio_fb */ 241 int virtio_gpu_surface_dirty(struct virtio_gpu_framebuffer *qfb, 242 struct drm_clip_rect *clips, 243 unsigned int num_clips); 244 /* virtio vg */ 245 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev); 246 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev); 247 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev, 248 struct virtio_gpu_object *bo, 249 uint32_t format, 250 uint32_t width, 251 uint32_t height); 252 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev, 253 uint32_t resource_id); 254 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev, 255 struct virtio_gpu_object *bo, 256 uint64_t offset, 257 __le32 width, __le32 height, 258 __le32 x, __le32 y, 259 struct virtio_gpu_fence *fence); 260 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev, 261 uint32_t resource_id, 262 uint32_t x, uint32_t y, 263 uint32_t width, uint32_t height); 264 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev, 265 uint32_t scanout_id, uint32_t resource_id, 266 uint32_t width, uint32_t height, 267 uint32_t x, uint32_t y); 268 int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev, 269 struct virtio_gpu_object *obj, 270 struct virtio_gpu_fence *fence); 271 void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev, 272 struct virtio_gpu_object *obj); 273 int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev); 274 int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev); 275 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev, 276 struct virtio_gpu_output *output); 277 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev); 278 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx); 279 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev, 280 int idx, int version, 281 struct virtio_gpu_drv_cap_cache **cache_p); 282 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev); 283 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id, 284 uint32_t nlen, const char *name); 285 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev, 286 uint32_t id); 287 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev, 288 uint32_t ctx_id, 289 uint32_t resource_id); 290 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev, 291 uint32_t ctx_id, 292 uint32_t resource_id); 293 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev, 294 void *data, uint32_t data_size, 295 uint32_t ctx_id, struct virtio_gpu_fence *fence); 296 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev, 297 uint32_t resource_id, uint32_t ctx_id, 298 uint64_t offset, uint32_t level, 299 struct virtio_gpu_box *box, 300 struct virtio_gpu_fence *fence); 301 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev, 302 struct virtio_gpu_object *bo, 303 uint32_t ctx_id, 304 uint64_t offset, uint32_t level, 305 struct virtio_gpu_box *box, 306 struct virtio_gpu_fence *fence); 307 void 308 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev, 309 struct virtio_gpu_object *bo, 310 struct virtio_gpu_resource_create_3d *rc_3d); 311 void virtio_gpu_ctrl_ack(struct virtqueue *vq); 312 void virtio_gpu_cursor_ack(struct virtqueue *vq); 313 void virtio_gpu_fence_ack(struct virtqueue *vq); 314 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work); 315 void virtio_gpu_dequeue_cursor_func(struct work_struct *work); 316 void virtio_gpu_dequeue_fence_func(struct work_struct *work); 317 318 /* virtio_gpu_display.c */ 319 int virtio_gpu_framebuffer_init(struct drm_device *dev, 320 struct virtio_gpu_framebuffer *vgfb, 321 const struct drm_mode_fb_cmd2 *mode_cmd, 322 struct drm_gem_object *obj); 323 int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev); 324 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev); 325 326 /* virtio_gpu_plane.c */ 327 uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc); 328 struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev, 329 enum drm_plane_type type, 330 int index); 331 332 /* virtio_gpu_ttm.c */ 333 int virtio_gpu_ttm_init(struct virtio_gpu_device *vgdev); 334 void virtio_gpu_ttm_fini(struct virtio_gpu_device *vgdev); 335 int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma); 336 337 /* virtio_gpu_fence.c */ 338 struct virtio_gpu_fence *virtio_gpu_fence_alloc( 339 struct virtio_gpu_device *vgdev); 340 void virtio_gpu_fence_cleanup(struct virtio_gpu_fence *fence); 341 int virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev, 342 struct virtio_gpu_ctrl_hdr *cmd_hdr, 343 struct virtio_gpu_fence *fence); 344 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev, 345 u64 last_seq); 346 347 /* virtio_gpu_object */ 348 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, 349 unsigned long size, bool kernel, bool pinned, 350 struct virtio_gpu_object **bo_ptr); 351 void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo); 352 int virtio_gpu_object_kmap(struct virtio_gpu_object *bo); 353 int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev, 354 struct virtio_gpu_object *bo); 355 void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo); 356 int virtio_gpu_object_wait(struct virtio_gpu_object *bo, bool no_wait); 357 358 /* virtgpu_prime.c */ 359 int virtgpu_gem_prime_pin(struct drm_gem_object *obj); 360 void virtgpu_gem_prime_unpin(struct drm_gem_object *obj); 361 struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj); 362 struct drm_gem_object *virtgpu_gem_prime_import_sg_table( 363 struct drm_device *dev, struct dma_buf_attachment *attach, 364 struct sg_table *sgt); 365 void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj); 366 void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 367 int virtgpu_gem_prime_mmap(struct drm_gem_object *obj, 368 struct vm_area_struct *vma); 369 370 static inline struct virtio_gpu_object* 371 virtio_gpu_object_ref(struct virtio_gpu_object *bo) 372 { 373 ttm_bo_get(&bo->tbo); 374 return bo; 375 } 376 377 static inline void virtio_gpu_object_unref(struct virtio_gpu_object **bo) 378 { 379 struct ttm_buffer_object *tbo; 380 381 if ((*bo) == NULL) 382 return; 383 tbo = &((*bo)->tbo); 384 ttm_bo_put(tbo); 385 *bo = NULL; 386 } 387 388 static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo) 389 { 390 return drm_vma_node_offset_addr(&bo->tbo.vma_node); 391 } 392 393 static inline int virtio_gpu_object_reserve(struct virtio_gpu_object *bo, 394 bool no_wait) 395 { 396 int r; 397 398 r = ttm_bo_reserve(&bo->tbo, true, no_wait, NULL); 399 if (unlikely(r != 0)) { 400 if (r != -ERESTARTSYS) { 401 struct virtio_gpu_device *qdev = 402 bo->gem_base.dev->dev_private; 403 dev_err(qdev->dev, "%p reserve failed\n", bo); 404 } 405 return r; 406 } 407 return 0; 408 } 409 410 static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object *bo) 411 { 412 ttm_bo_unreserve(&bo->tbo); 413 } 414 415 /* virgl debufs */ 416 int virtio_gpu_debugfs_init(struct drm_minor *minor); 417 418 #endif 419