1 /* 2 * Copyright (C) 2015 Red Hat, Inc. 3 * All Rights Reserved. 4 * 5 * Authors: 6 * Dave Airlie <airlied@redhat.com> 7 * Gerd Hoffmann <kraxel@redhat.com> 8 * 9 * Permission is hereby granted, free of charge, to any person obtaining a 10 * copy of this software and associated documentation files (the "Software"), 11 * to deal in the Software without restriction, including without limitation 12 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 13 * and/or sell copies of the Software, and to permit persons to whom the 14 * Software is furnished to do so, subject to the following conditions: 15 * 16 * The above copyright notice and this permission notice (including the next 17 * paragraph) shall be included in all copies or substantial portions of the 18 * Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 23 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 26 * OTHER DEALINGS IN THE SOFTWARE. 27 */ 28 29 #include <linux/dma-mapping.h> 30 #include <linux/virtio.h> 31 #include <linux/virtio_config.h> 32 #include <linux/virtio_ring.h> 33 34 #include <drm/drm_edid.h> 35 36 #include "virtgpu_drv.h" 37 #include "virtgpu_trace.h" 38 39 #define MAX_INLINE_CMD_SIZE 96 40 #define MAX_INLINE_RESP_SIZE 24 41 #define VBUFFER_SIZE (sizeof(struct virtio_gpu_vbuffer) \ 42 + MAX_INLINE_CMD_SIZE \ 43 + MAX_INLINE_RESP_SIZE) 44 45 static void convert_to_hw_box(struct virtio_gpu_box *dst, 46 const struct drm_virtgpu_3d_box *src) 47 { 48 dst->x = cpu_to_le32(src->x); 49 dst->y = cpu_to_le32(src->y); 50 dst->z = cpu_to_le32(src->z); 51 dst->w = cpu_to_le32(src->w); 52 dst->h = cpu_to_le32(src->h); 53 dst->d = cpu_to_le32(src->d); 54 } 55 56 void virtio_gpu_ctrl_ack(struct virtqueue *vq) 57 { 58 struct drm_device *dev = vq->vdev->priv; 59 struct virtio_gpu_device *vgdev = dev->dev_private; 60 61 schedule_work(&vgdev->ctrlq.dequeue_work); 62 } 63 64 void virtio_gpu_cursor_ack(struct virtqueue *vq) 65 { 66 struct drm_device *dev = vq->vdev->priv; 67 struct virtio_gpu_device *vgdev = dev->dev_private; 68 69 schedule_work(&vgdev->cursorq.dequeue_work); 70 } 71 72 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev) 73 { 74 vgdev->vbufs = kmem_cache_create("virtio-gpu-vbufs", 75 VBUFFER_SIZE, 76 __alignof__(struct virtio_gpu_vbuffer), 77 0, NULL); 78 if (!vgdev->vbufs) 79 return -ENOMEM; 80 return 0; 81 } 82 83 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev) 84 { 85 kmem_cache_destroy(vgdev->vbufs); 86 vgdev->vbufs = NULL; 87 } 88 89 static struct virtio_gpu_vbuffer* 90 virtio_gpu_get_vbuf(struct virtio_gpu_device *vgdev, 91 int size, int resp_size, void *resp_buf, 92 virtio_gpu_resp_cb resp_cb) 93 { 94 struct virtio_gpu_vbuffer *vbuf; 95 96 vbuf = kmem_cache_zalloc(vgdev->vbufs, GFP_KERNEL | __GFP_NOFAIL); 97 98 BUG_ON(size > MAX_INLINE_CMD_SIZE || 99 size < sizeof(struct virtio_gpu_ctrl_hdr)); 100 vbuf->buf = (void *)vbuf + sizeof(*vbuf); 101 vbuf->size = size; 102 103 vbuf->resp_cb = resp_cb; 104 vbuf->resp_size = resp_size; 105 if (resp_size <= MAX_INLINE_RESP_SIZE) 106 vbuf->resp_buf = (void *)vbuf->buf + size; 107 else 108 vbuf->resp_buf = resp_buf; 109 BUG_ON(!vbuf->resp_buf); 110 return vbuf; 111 } 112 113 static struct virtio_gpu_ctrl_hdr * 114 virtio_gpu_vbuf_ctrl_hdr(struct virtio_gpu_vbuffer *vbuf) 115 { 116 /* this assumes a vbuf contains a command that starts with a 117 * virtio_gpu_ctrl_hdr, which is true for both ctrl and cursor 118 * virtqueues. 119 */ 120 return (struct virtio_gpu_ctrl_hdr *)vbuf->buf; 121 } 122 123 static struct virtio_gpu_update_cursor* 124 virtio_gpu_alloc_cursor(struct virtio_gpu_device *vgdev, 125 struct virtio_gpu_vbuffer **vbuffer_p) 126 { 127 struct virtio_gpu_vbuffer *vbuf; 128 129 vbuf = virtio_gpu_get_vbuf 130 (vgdev, sizeof(struct virtio_gpu_update_cursor), 131 0, NULL, NULL); 132 if (IS_ERR(vbuf)) { 133 *vbuffer_p = NULL; 134 return ERR_CAST(vbuf); 135 } 136 *vbuffer_p = vbuf; 137 return (struct virtio_gpu_update_cursor *)vbuf->buf; 138 } 139 140 static void *virtio_gpu_alloc_cmd_resp(struct virtio_gpu_device *vgdev, 141 virtio_gpu_resp_cb cb, 142 struct virtio_gpu_vbuffer **vbuffer_p, 143 int cmd_size, int resp_size, 144 void *resp_buf) 145 { 146 struct virtio_gpu_vbuffer *vbuf; 147 148 vbuf = virtio_gpu_get_vbuf(vgdev, cmd_size, 149 resp_size, resp_buf, cb); 150 *vbuffer_p = vbuf; 151 return (struct virtio_gpu_command *)vbuf->buf; 152 } 153 154 static void *virtio_gpu_alloc_cmd(struct virtio_gpu_device *vgdev, 155 struct virtio_gpu_vbuffer **vbuffer_p, 156 int size) 157 { 158 return virtio_gpu_alloc_cmd_resp(vgdev, NULL, vbuffer_p, size, 159 sizeof(struct virtio_gpu_ctrl_hdr), 160 NULL); 161 } 162 163 static void *virtio_gpu_alloc_cmd_cb(struct virtio_gpu_device *vgdev, 164 struct virtio_gpu_vbuffer **vbuffer_p, 165 int size, 166 virtio_gpu_resp_cb cb) 167 { 168 return virtio_gpu_alloc_cmd_resp(vgdev, cb, vbuffer_p, size, 169 sizeof(struct virtio_gpu_ctrl_hdr), 170 NULL); 171 } 172 173 static void free_vbuf(struct virtio_gpu_device *vgdev, 174 struct virtio_gpu_vbuffer *vbuf) 175 { 176 if (vbuf->resp_size > MAX_INLINE_RESP_SIZE) 177 kfree(vbuf->resp_buf); 178 kvfree(vbuf->data_buf); 179 kmem_cache_free(vgdev->vbufs, vbuf); 180 } 181 182 static void reclaim_vbufs(struct virtqueue *vq, struct list_head *reclaim_list) 183 { 184 struct virtio_gpu_vbuffer *vbuf; 185 unsigned int len; 186 int freed = 0; 187 188 while ((vbuf = virtqueue_get_buf(vq, &len))) { 189 list_add_tail(&vbuf->list, reclaim_list); 190 freed++; 191 } 192 if (freed == 0) 193 DRM_DEBUG("Huh? zero vbufs reclaimed"); 194 } 195 196 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work) 197 { 198 struct virtio_gpu_device *vgdev = 199 container_of(work, struct virtio_gpu_device, 200 ctrlq.dequeue_work); 201 struct list_head reclaim_list; 202 struct virtio_gpu_vbuffer *entry, *tmp; 203 struct virtio_gpu_ctrl_hdr *resp; 204 u64 fence_id; 205 206 INIT_LIST_HEAD(&reclaim_list); 207 spin_lock(&vgdev->ctrlq.qlock); 208 do { 209 virtqueue_disable_cb(vgdev->ctrlq.vq); 210 reclaim_vbufs(vgdev->ctrlq.vq, &reclaim_list); 211 212 } while (!virtqueue_enable_cb(vgdev->ctrlq.vq)); 213 spin_unlock(&vgdev->ctrlq.qlock); 214 215 list_for_each_entry(entry, &reclaim_list, list) { 216 resp = (struct virtio_gpu_ctrl_hdr *)entry->resp_buf; 217 218 trace_virtio_gpu_cmd_response(vgdev->ctrlq.vq, resp, entry->seqno); 219 220 if (resp->type != cpu_to_le32(VIRTIO_GPU_RESP_OK_NODATA)) { 221 if (le32_to_cpu(resp->type) >= VIRTIO_GPU_RESP_ERR_UNSPEC) { 222 struct virtio_gpu_ctrl_hdr *cmd; 223 cmd = virtio_gpu_vbuf_ctrl_hdr(entry); 224 DRM_ERROR_RATELIMITED("response 0x%x (command 0x%x)\n", 225 le32_to_cpu(resp->type), 226 le32_to_cpu(cmd->type)); 227 } else 228 DRM_DEBUG("response 0x%x\n", le32_to_cpu(resp->type)); 229 } 230 if (resp->flags & cpu_to_le32(VIRTIO_GPU_FLAG_FENCE)) { 231 fence_id = le64_to_cpu(resp->fence_id); 232 virtio_gpu_fence_event_process(vgdev, fence_id); 233 } 234 if (entry->resp_cb) 235 entry->resp_cb(vgdev, entry); 236 } 237 wake_up(&vgdev->ctrlq.ack_queue); 238 239 list_for_each_entry_safe(entry, tmp, &reclaim_list, list) { 240 if (entry->objs) 241 virtio_gpu_array_put_free_delayed(vgdev, entry->objs); 242 list_del(&entry->list); 243 free_vbuf(vgdev, entry); 244 } 245 } 246 247 void virtio_gpu_dequeue_cursor_func(struct work_struct *work) 248 { 249 struct virtio_gpu_device *vgdev = 250 container_of(work, struct virtio_gpu_device, 251 cursorq.dequeue_work); 252 struct list_head reclaim_list; 253 struct virtio_gpu_vbuffer *entry, *tmp; 254 255 INIT_LIST_HEAD(&reclaim_list); 256 spin_lock(&vgdev->cursorq.qlock); 257 do { 258 virtqueue_disable_cb(vgdev->cursorq.vq); 259 reclaim_vbufs(vgdev->cursorq.vq, &reclaim_list); 260 } while (!virtqueue_enable_cb(vgdev->cursorq.vq)); 261 spin_unlock(&vgdev->cursorq.qlock); 262 263 list_for_each_entry_safe(entry, tmp, &reclaim_list, list) { 264 struct virtio_gpu_ctrl_hdr *resp = 265 (struct virtio_gpu_ctrl_hdr *)entry->resp_buf; 266 267 trace_virtio_gpu_cmd_response(vgdev->cursorq.vq, resp, entry->seqno); 268 list_del(&entry->list); 269 free_vbuf(vgdev, entry); 270 } 271 wake_up(&vgdev->cursorq.ack_queue); 272 } 273 274 /* Create sg_table from a vmalloc'd buffer. */ 275 static struct sg_table *vmalloc_to_sgt(char *data, uint32_t size, int *sg_ents) 276 { 277 int ret, s, i; 278 struct sg_table *sgt; 279 struct scatterlist *sg; 280 struct page *pg; 281 282 if (WARN_ON(!PAGE_ALIGNED(data))) 283 return NULL; 284 285 sgt = kmalloc(sizeof(*sgt), GFP_KERNEL); 286 if (!sgt) 287 return NULL; 288 289 *sg_ents = DIV_ROUND_UP(size, PAGE_SIZE); 290 ret = sg_alloc_table(sgt, *sg_ents, GFP_KERNEL); 291 if (ret) { 292 kfree(sgt); 293 return NULL; 294 } 295 296 for_each_sgtable_sg(sgt, sg, i) { 297 pg = vmalloc_to_page(data); 298 if (!pg) { 299 sg_free_table(sgt); 300 kfree(sgt); 301 return NULL; 302 } 303 304 s = min_t(int, PAGE_SIZE, size); 305 sg_set_page(sg, pg, s, 0); 306 307 size -= s; 308 data += s; 309 } 310 311 return sgt; 312 } 313 314 static int virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev, 315 struct virtio_gpu_vbuffer *vbuf, 316 struct virtio_gpu_fence *fence, 317 int elemcnt, 318 struct scatterlist **sgs, 319 int outcnt, 320 int incnt) 321 { 322 struct virtqueue *vq = vgdev->ctrlq.vq; 323 int ret, idx; 324 325 if (!drm_dev_enter(vgdev->ddev, &idx)) { 326 if (fence && vbuf->objs) 327 virtio_gpu_array_unlock_resv(vbuf->objs); 328 free_vbuf(vgdev, vbuf); 329 return -ENODEV; 330 } 331 332 if (vgdev->has_indirect) 333 elemcnt = 1; 334 335 again: 336 spin_lock(&vgdev->ctrlq.qlock); 337 338 if (vq->num_free < elemcnt) { 339 spin_unlock(&vgdev->ctrlq.qlock); 340 virtio_gpu_notify(vgdev); 341 wait_event(vgdev->ctrlq.ack_queue, vq->num_free >= elemcnt); 342 goto again; 343 } 344 345 /* now that the position of the vbuf in the virtqueue is known, we can 346 * finally set the fence id 347 */ 348 if (fence) { 349 virtio_gpu_fence_emit(vgdev, virtio_gpu_vbuf_ctrl_hdr(vbuf), 350 fence); 351 if (vbuf->objs) { 352 virtio_gpu_array_add_fence(vbuf->objs, &fence->f); 353 virtio_gpu_array_unlock_resv(vbuf->objs); 354 } 355 } 356 357 ret = virtqueue_add_sgs(vq, sgs, outcnt, incnt, vbuf, GFP_ATOMIC); 358 WARN_ON(ret); 359 360 vbuf->seqno = ++vgdev->ctrlq.seqno; 361 trace_virtio_gpu_cmd_queue(vq, virtio_gpu_vbuf_ctrl_hdr(vbuf), vbuf->seqno); 362 363 atomic_inc(&vgdev->pending_commands); 364 365 spin_unlock(&vgdev->ctrlq.qlock); 366 367 drm_dev_exit(idx); 368 return 0; 369 } 370 371 static int virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev, 372 struct virtio_gpu_vbuffer *vbuf, 373 struct virtio_gpu_fence *fence) 374 { 375 struct scatterlist *sgs[3], vcmd, vout, vresp; 376 struct sg_table *sgt = NULL; 377 int elemcnt = 0, outcnt = 0, incnt = 0, ret; 378 379 /* set up vcmd */ 380 sg_init_one(&vcmd, vbuf->buf, vbuf->size); 381 elemcnt++; 382 sgs[outcnt] = &vcmd; 383 outcnt++; 384 385 /* set up vout */ 386 if (vbuf->data_size) { 387 if (is_vmalloc_addr(vbuf->data_buf)) { 388 int sg_ents; 389 sgt = vmalloc_to_sgt(vbuf->data_buf, vbuf->data_size, 390 &sg_ents); 391 if (!sgt) { 392 if (fence && vbuf->objs) 393 virtio_gpu_array_unlock_resv(vbuf->objs); 394 return -ENOMEM; 395 } 396 397 elemcnt += sg_ents; 398 sgs[outcnt] = sgt->sgl; 399 } else { 400 sg_init_one(&vout, vbuf->data_buf, vbuf->data_size); 401 elemcnt++; 402 sgs[outcnt] = &vout; 403 } 404 outcnt++; 405 } 406 407 /* set up vresp */ 408 if (vbuf->resp_size) { 409 sg_init_one(&vresp, vbuf->resp_buf, vbuf->resp_size); 410 elemcnt++; 411 sgs[outcnt + incnt] = &vresp; 412 incnt++; 413 } 414 415 ret = virtio_gpu_queue_ctrl_sgs(vgdev, vbuf, fence, elemcnt, sgs, outcnt, 416 incnt); 417 418 if (sgt) { 419 sg_free_table(sgt); 420 kfree(sgt); 421 } 422 return ret; 423 } 424 425 void virtio_gpu_notify(struct virtio_gpu_device *vgdev) 426 { 427 bool notify; 428 429 if (!atomic_read(&vgdev->pending_commands)) 430 return; 431 432 spin_lock(&vgdev->ctrlq.qlock); 433 atomic_set(&vgdev->pending_commands, 0); 434 notify = virtqueue_kick_prepare(vgdev->ctrlq.vq); 435 spin_unlock(&vgdev->ctrlq.qlock); 436 437 if (notify) 438 virtqueue_notify(vgdev->ctrlq.vq); 439 } 440 441 static int virtio_gpu_queue_ctrl_buffer(struct virtio_gpu_device *vgdev, 442 struct virtio_gpu_vbuffer *vbuf) 443 { 444 return virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, NULL); 445 } 446 447 static void virtio_gpu_queue_cursor(struct virtio_gpu_device *vgdev, 448 struct virtio_gpu_vbuffer *vbuf) 449 { 450 struct virtqueue *vq = vgdev->cursorq.vq; 451 struct scatterlist *sgs[1], ccmd; 452 int idx, ret, outcnt; 453 bool notify; 454 455 if (!drm_dev_enter(vgdev->ddev, &idx)) { 456 free_vbuf(vgdev, vbuf); 457 return; 458 } 459 460 sg_init_one(&ccmd, vbuf->buf, vbuf->size); 461 sgs[0] = &ccmd; 462 outcnt = 1; 463 464 spin_lock(&vgdev->cursorq.qlock); 465 retry: 466 ret = virtqueue_add_sgs(vq, sgs, outcnt, 0, vbuf, GFP_ATOMIC); 467 if (ret == -ENOSPC) { 468 spin_unlock(&vgdev->cursorq.qlock); 469 wait_event(vgdev->cursorq.ack_queue, vq->num_free >= outcnt); 470 spin_lock(&vgdev->cursorq.qlock); 471 goto retry; 472 } else { 473 vbuf->seqno = ++vgdev->cursorq.seqno; 474 trace_virtio_gpu_cmd_queue(vq, 475 virtio_gpu_vbuf_ctrl_hdr(vbuf), 476 vbuf->seqno); 477 478 notify = virtqueue_kick_prepare(vq); 479 } 480 481 spin_unlock(&vgdev->cursorq.qlock); 482 483 if (notify) 484 virtqueue_notify(vq); 485 486 drm_dev_exit(idx); 487 } 488 489 /* just create gem objects for userspace and long lived objects, 490 * just use dma_alloced pages for the queue objects? 491 */ 492 493 /* create a basic resource */ 494 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev, 495 struct virtio_gpu_object *bo, 496 struct virtio_gpu_object_params *params, 497 struct virtio_gpu_object_array *objs, 498 struct virtio_gpu_fence *fence) 499 { 500 struct virtio_gpu_resource_create_2d *cmd_p; 501 struct virtio_gpu_vbuffer *vbuf; 502 503 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 504 memset(cmd_p, 0, sizeof(*cmd_p)); 505 vbuf->objs = objs; 506 507 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_CREATE_2D); 508 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 509 cmd_p->format = cpu_to_le32(params->format); 510 cmd_p->width = cpu_to_le32(params->width); 511 cmd_p->height = cpu_to_le32(params->height); 512 513 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 514 bo->created = true; 515 } 516 517 static void virtio_gpu_cmd_unref_cb(struct virtio_gpu_device *vgdev, 518 struct virtio_gpu_vbuffer *vbuf) 519 { 520 struct virtio_gpu_object *bo; 521 522 bo = vbuf->resp_cb_data; 523 vbuf->resp_cb_data = NULL; 524 525 virtio_gpu_cleanup_object(bo); 526 } 527 528 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev, 529 struct virtio_gpu_object *bo) 530 { 531 struct virtio_gpu_resource_unref *cmd_p; 532 struct virtio_gpu_vbuffer *vbuf; 533 int ret; 534 535 cmd_p = virtio_gpu_alloc_cmd_cb(vgdev, &vbuf, sizeof(*cmd_p), 536 virtio_gpu_cmd_unref_cb); 537 memset(cmd_p, 0, sizeof(*cmd_p)); 538 539 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_UNREF); 540 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 541 542 vbuf->resp_cb_data = bo; 543 ret = virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 544 if (ret < 0) 545 virtio_gpu_cleanup_object(bo); 546 } 547 548 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev, 549 uint32_t scanout_id, uint32_t resource_id, 550 uint32_t width, uint32_t height, 551 uint32_t x, uint32_t y) 552 { 553 struct virtio_gpu_set_scanout *cmd_p; 554 struct virtio_gpu_vbuffer *vbuf; 555 556 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 557 memset(cmd_p, 0, sizeof(*cmd_p)); 558 559 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_SET_SCANOUT); 560 cmd_p->resource_id = cpu_to_le32(resource_id); 561 cmd_p->scanout_id = cpu_to_le32(scanout_id); 562 cmd_p->r.width = cpu_to_le32(width); 563 cmd_p->r.height = cpu_to_le32(height); 564 cmd_p->r.x = cpu_to_le32(x); 565 cmd_p->r.y = cpu_to_le32(y); 566 567 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 568 } 569 570 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev, 571 uint32_t resource_id, 572 uint32_t x, uint32_t y, 573 uint32_t width, uint32_t height, 574 struct virtio_gpu_object_array *objs, 575 struct virtio_gpu_fence *fence) 576 { 577 struct virtio_gpu_resource_flush *cmd_p; 578 struct virtio_gpu_vbuffer *vbuf; 579 580 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 581 memset(cmd_p, 0, sizeof(*cmd_p)); 582 vbuf->objs = objs; 583 584 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_FLUSH); 585 cmd_p->resource_id = cpu_to_le32(resource_id); 586 cmd_p->r.width = cpu_to_le32(width); 587 cmd_p->r.height = cpu_to_le32(height); 588 cmd_p->r.x = cpu_to_le32(x); 589 cmd_p->r.y = cpu_to_le32(y); 590 591 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 592 } 593 594 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev, 595 uint64_t offset, 596 uint32_t width, uint32_t height, 597 uint32_t x, uint32_t y, 598 struct virtio_gpu_object_array *objs, 599 struct virtio_gpu_fence *fence) 600 { 601 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 602 struct virtio_gpu_transfer_to_host_2d *cmd_p; 603 struct virtio_gpu_vbuffer *vbuf; 604 bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev); 605 606 if (virtio_gpu_is_shmem(bo) && use_dma_api) 607 dma_sync_sgtable_for_device(&vgdev->vdev->dev, 608 bo->base.sgt, DMA_TO_DEVICE); 609 610 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 611 memset(cmd_p, 0, sizeof(*cmd_p)); 612 vbuf->objs = objs; 613 614 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D); 615 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 616 cmd_p->offset = cpu_to_le64(offset); 617 cmd_p->r.width = cpu_to_le32(width); 618 cmd_p->r.height = cpu_to_le32(height); 619 cmd_p->r.x = cpu_to_le32(x); 620 cmd_p->r.y = cpu_to_le32(y); 621 622 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 623 } 624 625 static void 626 virtio_gpu_cmd_resource_attach_backing(struct virtio_gpu_device *vgdev, 627 uint32_t resource_id, 628 struct virtio_gpu_mem_entry *ents, 629 uint32_t nents, 630 struct virtio_gpu_fence *fence) 631 { 632 struct virtio_gpu_resource_attach_backing *cmd_p; 633 struct virtio_gpu_vbuffer *vbuf; 634 635 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 636 memset(cmd_p, 0, sizeof(*cmd_p)); 637 638 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING); 639 cmd_p->resource_id = cpu_to_le32(resource_id); 640 cmd_p->nr_entries = cpu_to_le32(nents); 641 642 vbuf->data_buf = ents; 643 vbuf->data_size = sizeof(*ents) * nents; 644 645 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 646 } 647 648 static void virtio_gpu_cmd_get_display_info_cb(struct virtio_gpu_device *vgdev, 649 struct virtio_gpu_vbuffer *vbuf) 650 { 651 struct virtio_gpu_resp_display_info *resp = 652 (struct virtio_gpu_resp_display_info *)vbuf->resp_buf; 653 int i; 654 655 spin_lock(&vgdev->display_info_lock); 656 for (i = 0; i < vgdev->num_scanouts; i++) { 657 vgdev->outputs[i].info = resp->pmodes[i]; 658 if (resp->pmodes[i].enabled) { 659 DRM_DEBUG("output %d: %dx%d+%d+%d", i, 660 le32_to_cpu(resp->pmodes[i].r.width), 661 le32_to_cpu(resp->pmodes[i].r.height), 662 le32_to_cpu(resp->pmodes[i].r.x), 663 le32_to_cpu(resp->pmodes[i].r.y)); 664 } else { 665 DRM_DEBUG("output %d: disabled", i); 666 } 667 } 668 669 vgdev->display_info_pending = false; 670 spin_unlock(&vgdev->display_info_lock); 671 wake_up(&vgdev->resp_wq); 672 673 if (!drm_helper_hpd_irq_event(vgdev->ddev)) 674 drm_kms_helper_hotplug_event(vgdev->ddev); 675 } 676 677 static void virtio_gpu_cmd_get_capset_info_cb(struct virtio_gpu_device *vgdev, 678 struct virtio_gpu_vbuffer *vbuf) 679 { 680 struct virtio_gpu_get_capset_info *cmd = 681 (struct virtio_gpu_get_capset_info *)vbuf->buf; 682 struct virtio_gpu_resp_capset_info *resp = 683 (struct virtio_gpu_resp_capset_info *)vbuf->resp_buf; 684 int i = le32_to_cpu(cmd->capset_index); 685 686 spin_lock(&vgdev->display_info_lock); 687 if (vgdev->capsets) { 688 vgdev->capsets[i].id = le32_to_cpu(resp->capset_id); 689 vgdev->capsets[i].max_version = le32_to_cpu(resp->capset_max_version); 690 vgdev->capsets[i].max_size = le32_to_cpu(resp->capset_max_size); 691 } else { 692 DRM_ERROR("invalid capset memory."); 693 } 694 spin_unlock(&vgdev->display_info_lock); 695 wake_up(&vgdev->resp_wq); 696 } 697 698 static void virtio_gpu_cmd_capset_cb(struct virtio_gpu_device *vgdev, 699 struct virtio_gpu_vbuffer *vbuf) 700 { 701 struct virtio_gpu_get_capset *cmd = 702 (struct virtio_gpu_get_capset *)vbuf->buf; 703 struct virtio_gpu_resp_capset *resp = 704 (struct virtio_gpu_resp_capset *)vbuf->resp_buf; 705 struct virtio_gpu_drv_cap_cache *cache_ent; 706 707 spin_lock(&vgdev->display_info_lock); 708 list_for_each_entry(cache_ent, &vgdev->cap_cache, head) { 709 if (cache_ent->version == le32_to_cpu(cmd->capset_version) && 710 cache_ent->id == le32_to_cpu(cmd->capset_id)) { 711 memcpy(cache_ent->caps_cache, resp->capset_data, 712 cache_ent->size); 713 /* Copy must occur before is_valid is signalled. */ 714 smp_wmb(); 715 atomic_set(&cache_ent->is_valid, 1); 716 break; 717 } 718 } 719 spin_unlock(&vgdev->display_info_lock); 720 wake_up_all(&vgdev->resp_wq); 721 } 722 723 static int virtio_get_edid_block(void *data, u8 *buf, 724 unsigned int block, size_t len) 725 { 726 struct virtio_gpu_resp_edid *resp = data; 727 size_t start = block * EDID_LENGTH; 728 729 if (start + len > le32_to_cpu(resp->size)) 730 return -EINVAL; 731 memcpy(buf, resp->edid + start, len); 732 return 0; 733 } 734 735 static void virtio_gpu_cmd_get_edid_cb(struct virtio_gpu_device *vgdev, 736 struct virtio_gpu_vbuffer *vbuf) 737 { 738 struct virtio_gpu_cmd_get_edid *cmd = 739 (struct virtio_gpu_cmd_get_edid *)vbuf->buf; 740 struct virtio_gpu_resp_edid *resp = 741 (struct virtio_gpu_resp_edid *)vbuf->resp_buf; 742 uint32_t scanout = le32_to_cpu(cmd->scanout); 743 struct virtio_gpu_output *output; 744 struct edid *new_edid, *old_edid; 745 746 if (scanout >= vgdev->num_scanouts) 747 return; 748 output = vgdev->outputs + scanout; 749 750 new_edid = drm_do_get_edid(&output->conn, virtio_get_edid_block, resp); 751 drm_connector_update_edid_property(&output->conn, new_edid); 752 753 spin_lock(&vgdev->display_info_lock); 754 old_edid = output->edid; 755 output->edid = new_edid; 756 spin_unlock(&vgdev->display_info_lock); 757 758 kfree(old_edid); 759 wake_up(&vgdev->resp_wq); 760 } 761 762 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev) 763 { 764 struct virtio_gpu_ctrl_hdr *cmd_p; 765 struct virtio_gpu_vbuffer *vbuf; 766 void *resp_buf; 767 768 resp_buf = kzalloc(sizeof(struct virtio_gpu_resp_display_info), 769 GFP_KERNEL); 770 if (!resp_buf) 771 return -ENOMEM; 772 773 cmd_p = virtio_gpu_alloc_cmd_resp 774 (vgdev, &virtio_gpu_cmd_get_display_info_cb, &vbuf, 775 sizeof(*cmd_p), sizeof(struct virtio_gpu_resp_display_info), 776 resp_buf); 777 memset(cmd_p, 0, sizeof(*cmd_p)); 778 779 vgdev->display_info_pending = true; 780 cmd_p->type = cpu_to_le32(VIRTIO_GPU_CMD_GET_DISPLAY_INFO); 781 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 782 return 0; 783 } 784 785 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx) 786 { 787 struct virtio_gpu_get_capset_info *cmd_p; 788 struct virtio_gpu_vbuffer *vbuf; 789 void *resp_buf; 790 791 resp_buf = kzalloc(sizeof(struct virtio_gpu_resp_capset_info), 792 GFP_KERNEL); 793 if (!resp_buf) 794 return -ENOMEM; 795 796 cmd_p = virtio_gpu_alloc_cmd_resp 797 (vgdev, &virtio_gpu_cmd_get_capset_info_cb, &vbuf, 798 sizeof(*cmd_p), sizeof(struct virtio_gpu_resp_capset_info), 799 resp_buf); 800 memset(cmd_p, 0, sizeof(*cmd_p)); 801 802 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_CAPSET_INFO); 803 cmd_p->capset_index = cpu_to_le32(idx); 804 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 805 return 0; 806 } 807 808 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev, 809 int idx, int version, 810 struct virtio_gpu_drv_cap_cache **cache_p) 811 { 812 struct virtio_gpu_get_capset *cmd_p; 813 struct virtio_gpu_vbuffer *vbuf; 814 int max_size; 815 struct virtio_gpu_drv_cap_cache *cache_ent; 816 struct virtio_gpu_drv_cap_cache *search_ent; 817 void *resp_buf; 818 819 *cache_p = NULL; 820 821 if (idx >= vgdev->num_capsets) 822 return -EINVAL; 823 824 if (version > vgdev->capsets[idx].max_version) 825 return -EINVAL; 826 827 cache_ent = kzalloc(sizeof(*cache_ent), GFP_KERNEL); 828 if (!cache_ent) 829 return -ENOMEM; 830 831 max_size = vgdev->capsets[idx].max_size; 832 cache_ent->caps_cache = kmalloc(max_size, GFP_KERNEL); 833 if (!cache_ent->caps_cache) { 834 kfree(cache_ent); 835 return -ENOMEM; 836 } 837 838 resp_buf = kzalloc(sizeof(struct virtio_gpu_resp_capset) + max_size, 839 GFP_KERNEL); 840 if (!resp_buf) { 841 kfree(cache_ent->caps_cache); 842 kfree(cache_ent); 843 return -ENOMEM; 844 } 845 846 cache_ent->version = version; 847 cache_ent->id = vgdev->capsets[idx].id; 848 atomic_set(&cache_ent->is_valid, 0); 849 cache_ent->size = max_size; 850 spin_lock(&vgdev->display_info_lock); 851 /* Search while under lock in case it was added by another task. */ 852 list_for_each_entry(search_ent, &vgdev->cap_cache, head) { 853 if (search_ent->id == vgdev->capsets[idx].id && 854 search_ent->version == version) { 855 *cache_p = search_ent; 856 break; 857 } 858 } 859 if (!*cache_p) 860 list_add_tail(&cache_ent->head, &vgdev->cap_cache); 861 spin_unlock(&vgdev->display_info_lock); 862 863 if (*cache_p) { 864 /* Entry was found, so free everything that was just created. */ 865 kfree(resp_buf); 866 kfree(cache_ent->caps_cache); 867 kfree(cache_ent); 868 return 0; 869 } 870 871 cmd_p = virtio_gpu_alloc_cmd_resp 872 (vgdev, &virtio_gpu_cmd_capset_cb, &vbuf, sizeof(*cmd_p), 873 sizeof(struct virtio_gpu_resp_capset) + max_size, 874 resp_buf); 875 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_CAPSET); 876 cmd_p->capset_id = cpu_to_le32(vgdev->capsets[idx].id); 877 cmd_p->capset_version = cpu_to_le32(version); 878 *cache_p = cache_ent; 879 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 880 881 return 0; 882 } 883 884 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev) 885 { 886 struct virtio_gpu_cmd_get_edid *cmd_p; 887 struct virtio_gpu_vbuffer *vbuf; 888 void *resp_buf; 889 int scanout; 890 891 if (WARN_ON(!vgdev->has_edid)) 892 return -EINVAL; 893 894 for (scanout = 0; scanout < vgdev->num_scanouts; scanout++) { 895 resp_buf = kzalloc(sizeof(struct virtio_gpu_resp_edid), 896 GFP_KERNEL); 897 if (!resp_buf) 898 return -ENOMEM; 899 900 cmd_p = virtio_gpu_alloc_cmd_resp 901 (vgdev, &virtio_gpu_cmd_get_edid_cb, &vbuf, 902 sizeof(*cmd_p), sizeof(struct virtio_gpu_resp_edid), 903 resp_buf); 904 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_EDID); 905 cmd_p->scanout = cpu_to_le32(scanout); 906 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 907 } 908 909 return 0; 910 } 911 912 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id, 913 uint32_t context_init, uint32_t nlen, 914 const char *name) 915 { 916 struct virtio_gpu_ctx_create *cmd_p; 917 struct virtio_gpu_vbuffer *vbuf; 918 919 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 920 memset(cmd_p, 0, sizeof(*cmd_p)); 921 922 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_CREATE); 923 cmd_p->hdr.ctx_id = cpu_to_le32(id); 924 cmd_p->nlen = cpu_to_le32(nlen); 925 cmd_p->context_init = cpu_to_le32(context_init); 926 strncpy(cmd_p->debug_name, name, sizeof(cmd_p->debug_name) - 1); 927 cmd_p->debug_name[sizeof(cmd_p->debug_name) - 1] = 0; 928 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 929 } 930 931 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev, 932 uint32_t id) 933 { 934 struct virtio_gpu_ctx_destroy *cmd_p; 935 struct virtio_gpu_vbuffer *vbuf; 936 937 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 938 memset(cmd_p, 0, sizeof(*cmd_p)); 939 940 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_DESTROY); 941 cmd_p->hdr.ctx_id = cpu_to_le32(id); 942 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 943 } 944 945 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev, 946 uint32_t ctx_id, 947 struct virtio_gpu_object_array *objs) 948 { 949 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 950 struct virtio_gpu_ctx_resource *cmd_p; 951 struct virtio_gpu_vbuffer *vbuf; 952 953 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 954 memset(cmd_p, 0, sizeof(*cmd_p)); 955 vbuf->objs = objs; 956 957 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE); 958 cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id); 959 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 960 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 961 } 962 963 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev, 964 uint32_t ctx_id, 965 struct virtio_gpu_object_array *objs) 966 { 967 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 968 struct virtio_gpu_ctx_resource *cmd_p; 969 struct virtio_gpu_vbuffer *vbuf; 970 971 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 972 memset(cmd_p, 0, sizeof(*cmd_p)); 973 vbuf->objs = objs; 974 975 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE); 976 cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id); 977 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 978 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 979 } 980 981 void 982 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev, 983 struct virtio_gpu_object *bo, 984 struct virtio_gpu_object_params *params, 985 struct virtio_gpu_object_array *objs, 986 struct virtio_gpu_fence *fence) 987 { 988 struct virtio_gpu_resource_create_3d *cmd_p; 989 struct virtio_gpu_vbuffer *vbuf; 990 991 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 992 memset(cmd_p, 0, sizeof(*cmd_p)); 993 vbuf->objs = objs; 994 995 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_CREATE_3D); 996 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 997 cmd_p->format = cpu_to_le32(params->format); 998 cmd_p->width = cpu_to_le32(params->width); 999 cmd_p->height = cpu_to_le32(params->height); 1000 1001 cmd_p->target = cpu_to_le32(params->target); 1002 cmd_p->bind = cpu_to_le32(params->bind); 1003 cmd_p->depth = cpu_to_le32(params->depth); 1004 cmd_p->array_size = cpu_to_le32(params->array_size); 1005 cmd_p->last_level = cpu_to_le32(params->last_level); 1006 cmd_p->nr_samples = cpu_to_le32(params->nr_samples); 1007 cmd_p->flags = cpu_to_le32(params->flags); 1008 1009 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 1010 1011 bo->created = true; 1012 } 1013 1014 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev, 1015 uint32_t ctx_id, 1016 uint64_t offset, uint32_t level, 1017 uint32_t stride, 1018 uint32_t layer_stride, 1019 struct drm_virtgpu_3d_box *box, 1020 struct virtio_gpu_object_array *objs, 1021 struct virtio_gpu_fence *fence) 1022 { 1023 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 1024 struct virtio_gpu_transfer_host_3d *cmd_p; 1025 struct virtio_gpu_vbuffer *vbuf; 1026 bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev); 1027 1028 if (virtio_gpu_is_shmem(bo) && use_dma_api) 1029 dma_sync_sgtable_for_device(&vgdev->vdev->dev, 1030 bo->base.sgt, DMA_TO_DEVICE); 1031 1032 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1033 memset(cmd_p, 0, sizeof(*cmd_p)); 1034 1035 vbuf->objs = objs; 1036 1037 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D); 1038 cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id); 1039 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1040 convert_to_hw_box(&cmd_p->box, box); 1041 cmd_p->offset = cpu_to_le64(offset); 1042 cmd_p->level = cpu_to_le32(level); 1043 cmd_p->stride = cpu_to_le32(stride); 1044 cmd_p->layer_stride = cpu_to_le32(layer_stride); 1045 1046 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 1047 } 1048 1049 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev, 1050 uint32_t ctx_id, 1051 uint64_t offset, uint32_t level, 1052 uint32_t stride, 1053 uint32_t layer_stride, 1054 struct drm_virtgpu_3d_box *box, 1055 struct virtio_gpu_object_array *objs, 1056 struct virtio_gpu_fence *fence) 1057 { 1058 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 1059 struct virtio_gpu_transfer_host_3d *cmd_p; 1060 struct virtio_gpu_vbuffer *vbuf; 1061 1062 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1063 memset(cmd_p, 0, sizeof(*cmd_p)); 1064 1065 vbuf->objs = objs; 1066 1067 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D); 1068 cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id); 1069 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1070 convert_to_hw_box(&cmd_p->box, box); 1071 cmd_p->offset = cpu_to_le64(offset); 1072 cmd_p->level = cpu_to_le32(level); 1073 cmd_p->stride = cpu_to_le32(stride); 1074 cmd_p->layer_stride = cpu_to_le32(layer_stride); 1075 1076 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 1077 } 1078 1079 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev, 1080 void *data, uint32_t data_size, 1081 uint32_t ctx_id, 1082 struct virtio_gpu_object_array *objs, 1083 struct virtio_gpu_fence *fence) 1084 { 1085 struct virtio_gpu_cmd_submit *cmd_p; 1086 struct virtio_gpu_vbuffer *vbuf; 1087 1088 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1089 memset(cmd_p, 0, sizeof(*cmd_p)); 1090 1091 vbuf->data_buf = data; 1092 vbuf->data_size = data_size; 1093 vbuf->objs = objs; 1094 1095 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_SUBMIT_3D); 1096 cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id); 1097 cmd_p->size = cpu_to_le32(data_size); 1098 1099 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 1100 } 1101 1102 void virtio_gpu_object_attach(struct virtio_gpu_device *vgdev, 1103 struct virtio_gpu_object *obj, 1104 struct virtio_gpu_mem_entry *ents, 1105 unsigned int nents) 1106 { 1107 virtio_gpu_cmd_resource_attach_backing(vgdev, obj->hw_res_handle, 1108 ents, nents, NULL); 1109 } 1110 1111 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev, 1112 struct virtio_gpu_output *output) 1113 { 1114 struct virtio_gpu_vbuffer *vbuf; 1115 struct virtio_gpu_update_cursor *cur_p; 1116 1117 output->cursor.pos.scanout_id = cpu_to_le32(output->index); 1118 cur_p = virtio_gpu_alloc_cursor(vgdev, &vbuf); 1119 memcpy(cur_p, &output->cursor, sizeof(output->cursor)); 1120 virtio_gpu_queue_cursor(vgdev, vbuf); 1121 } 1122 1123 static void virtio_gpu_cmd_resource_uuid_cb(struct virtio_gpu_device *vgdev, 1124 struct virtio_gpu_vbuffer *vbuf) 1125 { 1126 struct virtio_gpu_object *obj = 1127 gem_to_virtio_gpu_obj(vbuf->objs->objs[0]); 1128 struct virtio_gpu_resp_resource_uuid *resp = 1129 (struct virtio_gpu_resp_resource_uuid *)vbuf->resp_buf; 1130 uint32_t resp_type = le32_to_cpu(resp->hdr.type); 1131 1132 spin_lock(&vgdev->resource_export_lock); 1133 WARN_ON(obj->uuid_state != STATE_INITIALIZING); 1134 1135 if (resp_type == VIRTIO_GPU_RESP_OK_RESOURCE_UUID && 1136 obj->uuid_state == STATE_INITIALIZING) { 1137 import_uuid(&obj->uuid, resp->uuid); 1138 obj->uuid_state = STATE_OK; 1139 } else { 1140 obj->uuid_state = STATE_ERR; 1141 } 1142 spin_unlock(&vgdev->resource_export_lock); 1143 1144 wake_up_all(&vgdev->resp_wq); 1145 } 1146 1147 int 1148 virtio_gpu_cmd_resource_assign_uuid(struct virtio_gpu_device *vgdev, 1149 struct virtio_gpu_object_array *objs) 1150 { 1151 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 1152 struct virtio_gpu_resource_assign_uuid *cmd_p; 1153 struct virtio_gpu_vbuffer *vbuf; 1154 struct virtio_gpu_resp_resource_uuid *resp_buf; 1155 1156 resp_buf = kzalloc(sizeof(*resp_buf), GFP_KERNEL); 1157 if (!resp_buf) { 1158 spin_lock(&vgdev->resource_export_lock); 1159 bo->uuid_state = STATE_ERR; 1160 spin_unlock(&vgdev->resource_export_lock); 1161 virtio_gpu_array_put_free(objs); 1162 return -ENOMEM; 1163 } 1164 1165 cmd_p = virtio_gpu_alloc_cmd_resp 1166 (vgdev, virtio_gpu_cmd_resource_uuid_cb, &vbuf, sizeof(*cmd_p), 1167 sizeof(struct virtio_gpu_resp_resource_uuid), resp_buf); 1168 memset(cmd_p, 0, sizeof(*cmd_p)); 1169 1170 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_ASSIGN_UUID); 1171 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1172 1173 vbuf->objs = objs; 1174 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1175 return 0; 1176 } 1177 1178 static void virtio_gpu_cmd_resource_map_cb(struct virtio_gpu_device *vgdev, 1179 struct virtio_gpu_vbuffer *vbuf) 1180 { 1181 struct virtio_gpu_object *bo = 1182 gem_to_virtio_gpu_obj(vbuf->objs->objs[0]); 1183 struct virtio_gpu_resp_map_info *resp = 1184 (struct virtio_gpu_resp_map_info *)vbuf->resp_buf; 1185 struct virtio_gpu_object_vram *vram = to_virtio_gpu_vram(bo); 1186 uint32_t resp_type = le32_to_cpu(resp->hdr.type); 1187 1188 spin_lock(&vgdev->host_visible_lock); 1189 1190 if (resp_type == VIRTIO_GPU_RESP_OK_MAP_INFO) { 1191 vram->map_info = resp->map_info; 1192 vram->map_state = STATE_OK; 1193 } else { 1194 vram->map_state = STATE_ERR; 1195 } 1196 1197 spin_unlock(&vgdev->host_visible_lock); 1198 wake_up_all(&vgdev->resp_wq); 1199 } 1200 1201 int virtio_gpu_cmd_map(struct virtio_gpu_device *vgdev, 1202 struct virtio_gpu_object_array *objs, uint64_t offset) 1203 { 1204 struct virtio_gpu_resource_map_blob *cmd_p; 1205 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 1206 struct virtio_gpu_vbuffer *vbuf; 1207 struct virtio_gpu_resp_map_info *resp_buf; 1208 1209 resp_buf = kzalloc(sizeof(*resp_buf), GFP_KERNEL); 1210 if (!resp_buf) 1211 return -ENOMEM; 1212 1213 cmd_p = virtio_gpu_alloc_cmd_resp 1214 (vgdev, virtio_gpu_cmd_resource_map_cb, &vbuf, sizeof(*cmd_p), 1215 sizeof(struct virtio_gpu_resp_map_info), resp_buf); 1216 memset(cmd_p, 0, sizeof(*cmd_p)); 1217 1218 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_MAP_BLOB); 1219 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1220 cmd_p->offset = cpu_to_le64(offset); 1221 vbuf->objs = objs; 1222 1223 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1224 return 0; 1225 } 1226 1227 void virtio_gpu_cmd_unmap(struct virtio_gpu_device *vgdev, 1228 struct virtio_gpu_object *bo) 1229 { 1230 struct virtio_gpu_resource_unmap_blob *cmd_p; 1231 struct virtio_gpu_vbuffer *vbuf; 1232 1233 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1234 memset(cmd_p, 0, sizeof(*cmd_p)); 1235 1236 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_UNMAP_BLOB); 1237 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1238 1239 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1240 } 1241 1242 void 1243 virtio_gpu_cmd_resource_create_blob(struct virtio_gpu_device *vgdev, 1244 struct virtio_gpu_object *bo, 1245 struct virtio_gpu_object_params *params, 1246 struct virtio_gpu_mem_entry *ents, 1247 uint32_t nents) 1248 { 1249 struct virtio_gpu_resource_create_blob *cmd_p; 1250 struct virtio_gpu_vbuffer *vbuf; 1251 1252 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1253 memset(cmd_p, 0, sizeof(*cmd_p)); 1254 1255 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB); 1256 cmd_p->hdr.ctx_id = cpu_to_le32(params->ctx_id); 1257 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1258 cmd_p->blob_mem = cpu_to_le32(params->blob_mem); 1259 cmd_p->blob_flags = cpu_to_le32(params->blob_flags); 1260 cmd_p->blob_id = cpu_to_le64(params->blob_id); 1261 cmd_p->size = cpu_to_le64(params->size); 1262 cmd_p->nr_entries = cpu_to_le32(nents); 1263 1264 vbuf->data_buf = ents; 1265 vbuf->data_size = sizeof(*ents) * nents; 1266 1267 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1268 bo->created = true; 1269 } 1270 1271 void virtio_gpu_cmd_set_scanout_blob(struct virtio_gpu_device *vgdev, 1272 uint32_t scanout_id, 1273 struct virtio_gpu_object *bo, 1274 struct drm_framebuffer *fb, 1275 uint32_t width, uint32_t height, 1276 uint32_t x, uint32_t y) 1277 { 1278 uint32_t i; 1279 struct virtio_gpu_set_scanout_blob *cmd_p; 1280 struct virtio_gpu_vbuffer *vbuf; 1281 uint32_t format = virtio_gpu_translate_format(fb->format->format); 1282 1283 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1284 memset(cmd_p, 0, sizeof(*cmd_p)); 1285 1286 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_SET_SCANOUT_BLOB); 1287 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1288 cmd_p->scanout_id = cpu_to_le32(scanout_id); 1289 1290 cmd_p->format = cpu_to_le32(format); 1291 cmd_p->width = cpu_to_le32(fb->width); 1292 cmd_p->height = cpu_to_le32(fb->height); 1293 1294 for (i = 0; i < 4; i++) { 1295 cmd_p->strides[i] = cpu_to_le32(fb->pitches[i]); 1296 cmd_p->offsets[i] = cpu_to_le32(fb->offsets[i]); 1297 } 1298 1299 cmd_p->r.width = cpu_to_le32(width); 1300 cmd_p->r.height = cpu_to_le32(height); 1301 cmd_p->r.x = cpu_to_le32(x); 1302 cmd_p->r.y = cpu_to_le32(y); 1303 1304 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1305 } 1306