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 #include <drm/drm_print.h> 36 37 #include "virtgpu_drv.h" 38 #include "virtgpu_trace.h" 39 40 #define MAX_INLINE_CMD_SIZE 96 41 #define MAX_INLINE_RESP_SIZE 24 42 #define VBUFFER_SIZE (sizeof(struct virtio_gpu_vbuffer) \ 43 + MAX_INLINE_CMD_SIZE \ 44 + MAX_INLINE_RESP_SIZE) 45 46 static void convert_to_hw_box(struct virtio_gpu_box *dst, 47 const struct drm_virtgpu_3d_box *src) 48 { 49 dst->x = cpu_to_le32(src->x); 50 dst->y = cpu_to_le32(src->y); 51 dst->z = cpu_to_le32(src->z); 52 dst->w = cpu_to_le32(src->w); 53 dst->h = cpu_to_le32(src->h); 54 dst->d = cpu_to_le32(src->d); 55 } 56 57 void virtio_gpu_ctrl_ack(struct virtqueue *vq) 58 { 59 struct drm_device *dev = vq->vdev->priv; 60 struct virtio_gpu_device *vgdev = dev->dev_private; 61 62 schedule_work(&vgdev->ctrlq.dequeue_work); 63 } 64 65 void virtio_gpu_cursor_ack(struct virtqueue *vq) 66 { 67 struct drm_device *dev = vq->vdev->priv; 68 struct virtio_gpu_device *vgdev = dev->dev_private; 69 70 schedule_work(&vgdev->cursorq.dequeue_work); 71 } 72 73 int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev) 74 { 75 vgdev->vbufs = kmem_cache_create("virtio-gpu-vbufs", 76 VBUFFER_SIZE, 77 __alignof__(struct virtio_gpu_vbuffer), 78 0, NULL); 79 if (!vgdev->vbufs) 80 return -ENOMEM; 81 return 0; 82 } 83 84 void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev) 85 { 86 kmem_cache_destroy(vgdev->vbufs); 87 vgdev->vbufs = NULL; 88 } 89 90 /* For drm_panic */ 91 static struct virtio_gpu_vbuffer* 92 virtio_gpu_panic_get_vbuf(struct virtio_gpu_device *vgdev, int size) 93 { 94 struct virtio_gpu_vbuffer *vbuf; 95 96 vbuf = kmem_cache_zalloc(vgdev->vbufs, GFP_ATOMIC); 97 98 vbuf->buf = (void *)vbuf + sizeof(*vbuf); 99 vbuf->size = size; 100 vbuf->resp_cb = NULL; 101 vbuf->resp_size = sizeof(struct virtio_gpu_ctrl_hdr); 102 vbuf->resp_buf = (void *)vbuf->buf + size; 103 return vbuf; 104 } 105 106 static struct virtio_gpu_vbuffer* 107 virtio_gpu_get_vbuf(struct virtio_gpu_device *vgdev, 108 int size, int resp_size, void *resp_buf, 109 virtio_gpu_resp_cb resp_cb) 110 { 111 struct virtio_gpu_vbuffer *vbuf; 112 113 vbuf = kmem_cache_zalloc(vgdev->vbufs, GFP_KERNEL | __GFP_NOFAIL); 114 115 BUG_ON(size > MAX_INLINE_CMD_SIZE || 116 size < sizeof(struct virtio_gpu_ctrl_hdr)); 117 vbuf->buf = (void *)vbuf + sizeof(*vbuf); 118 vbuf->size = size; 119 120 vbuf->resp_cb = resp_cb; 121 vbuf->resp_size = resp_size; 122 if (resp_size <= MAX_INLINE_RESP_SIZE) 123 vbuf->resp_buf = (void *)vbuf->buf + size; 124 else 125 vbuf->resp_buf = resp_buf; 126 BUG_ON(!vbuf->resp_buf); 127 return vbuf; 128 } 129 130 static struct virtio_gpu_ctrl_hdr * 131 virtio_gpu_vbuf_ctrl_hdr(struct virtio_gpu_vbuffer *vbuf) 132 { 133 /* this assumes a vbuf contains a command that starts with a 134 * virtio_gpu_ctrl_hdr, which is true for both ctrl and cursor 135 * virtqueues. 136 */ 137 return (struct virtio_gpu_ctrl_hdr *)vbuf->buf; 138 } 139 140 static struct virtio_gpu_update_cursor* 141 virtio_gpu_alloc_cursor(struct virtio_gpu_device *vgdev, 142 struct virtio_gpu_vbuffer **vbuffer_p) 143 { 144 struct virtio_gpu_vbuffer *vbuf; 145 146 vbuf = virtio_gpu_get_vbuf 147 (vgdev, sizeof(struct virtio_gpu_update_cursor), 148 0, NULL, NULL); 149 if (IS_ERR(vbuf)) { 150 *vbuffer_p = NULL; 151 return ERR_CAST(vbuf); 152 } 153 *vbuffer_p = vbuf; 154 return (struct virtio_gpu_update_cursor *)vbuf->buf; 155 } 156 157 /* For drm_panic */ 158 static void *virtio_gpu_panic_alloc_cmd_resp(struct virtio_gpu_device *vgdev, 159 struct virtio_gpu_vbuffer **vbuffer_p, 160 int cmd_size) 161 { 162 struct virtio_gpu_vbuffer *vbuf; 163 164 vbuf = virtio_gpu_panic_get_vbuf(vgdev, cmd_size); 165 *vbuffer_p = vbuf; 166 return (struct virtio_gpu_command *)vbuf->buf; 167 } 168 169 static void *virtio_gpu_alloc_cmd_resp(struct virtio_gpu_device *vgdev, 170 virtio_gpu_resp_cb cb, 171 struct virtio_gpu_vbuffer **vbuffer_p, 172 int cmd_size, int resp_size, 173 void *resp_buf) 174 { 175 struct virtio_gpu_vbuffer *vbuf; 176 177 vbuf = virtio_gpu_get_vbuf(vgdev, cmd_size, 178 resp_size, resp_buf, cb); 179 *vbuffer_p = vbuf; 180 return (struct virtio_gpu_command *)vbuf->buf; 181 } 182 183 static void *virtio_gpu_alloc_cmd(struct virtio_gpu_device *vgdev, 184 struct virtio_gpu_vbuffer **vbuffer_p, 185 int size) 186 { 187 return virtio_gpu_alloc_cmd_resp(vgdev, NULL, vbuffer_p, size, 188 sizeof(struct virtio_gpu_ctrl_hdr), 189 NULL); 190 } 191 192 static void *virtio_gpu_alloc_cmd_cb(struct virtio_gpu_device *vgdev, 193 struct virtio_gpu_vbuffer **vbuffer_p, 194 int size, 195 virtio_gpu_resp_cb cb) 196 { 197 return virtio_gpu_alloc_cmd_resp(vgdev, cb, vbuffer_p, size, 198 sizeof(struct virtio_gpu_ctrl_hdr), 199 NULL); 200 } 201 202 static void free_vbuf(struct virtio_gpu_device *vgdev, 203 struct virtio_gpu_vbuffer *vbuf) 204 { 205 if (vbuf->resp_size > MAX_INLINE_RESP_SIZE) 206 kfree(vbuf->resp_buf); 207 kvfree(vbuf->data_buf); 208 kmem_cache_free(vgdev->vbufs, vbuf); 209 } 210 211 static void reclaim_vbufs(struct virtqueue *vq, struct list_head *reclaim_list) 212 { 213 struct virtio_gpu_vbuffer *vbuf; 214 unsigned int len; 215 int freed = 0; 216 217 while ((vbuf = virtqueue_get_buf(vq, &len))) { 218 list_add_tail(&vbuf->list, reclaim_list); 219 freed++; 220 } 221 if (freed == 0) 222 DRM_DEBUG("Huh? zero vbufs reclaimed"); 223 } 224 225 void virtio_gpu_dequeue_ctrl_func(struct work_struct *work) 226 { 227 struct virtio_gpu_device *vgdev = 228 container_of(work, struct virtio_gpu_device, 229 ctrlq.dequeue_work); 230 struct list_head reclaim_list; 231 struct virtio_gpu_vbuffer *entry, *tmp; 232 struct virtio_gpu_ctrl_hdr *resp; 233 u64 fence_id; 234 235 INIT_LIST_HEAD(&reclaim_list); 236 spin_lock(&vgdev->ctrlq.qlock); 237 do { 238 virtqueue_disable_cb(vgdev->ctrlq.vq); 239 reclaim_vbufs(vgdev->ctrlq.vq, &reclaim_list); 240 241 } while (!virtqueue_enable_cb(vgdev->ctrlq.vq)); 242 spin_unlock(&vgdev->ctrlq.qlock); 243 244 list_for_each_entry(entry, &reclaim_list, list) { 245 resp = (struct virtio_gpu_ctrl_hdr *)entry->resp_buf; 246 247 trace_virtio_gpu_cmd_response(vgdev->ctrlq.vq, resp, entry->seqno); 248 249 if (resp->type != cpu_to_le32(VIRTIO_GPU_RESP_OK_NODATA)) { 250 if (le32_to_cpu(resp->type) >= VIRTIO_GPU_RESP_ERR_UNSPEC) { 251 struct virtio_gpu_ctrl_hdr *cmd; 252 253 cmd = virtio_gpu_vbuf_ctrl_hdr(entry); 254 DRM_ERROR_RATELIMITED("response 0x%x (command 0x%x)\n", 255 le32_to_cpu(resp->type), 256 le32_to_cpu(cmd->type)); 257 } else 258 DRM_DEBUG("response 0x%x\n", le32_to_cpu(resp->type)); 259 } 260 if (resp->flags & cpu_to_le32(VIRTIO_GPU_FLAG_FENCE)) { 261 fence_id = le64_to_cpu(resp->fence_id); 262 virtio_gpu_fence_event_process(vgdev, fence_id); 263 } 264 if (entry->resp_cb) 265 entry->resp_cb(vgdev, entry); 266 } 267 wake_up(&vgdev->ctrlq.ack_queue); 268 269 list_for_each_entry_safe(entry, tmp, &reclaim_list, list) { 270 if (entry->objs) 271 virtio_gpu_array_put_free_delayed(vgdev, entry->objs); 272 list_del(&entry->list); 273 free_vbuf(vgdev, entry); 274 } 275 } 276 277 void virtio_gpu_dequeue_cursor_func(struct work_struct *work) 278 { 279 struct virtio_gpu_device *vgdev = 280 container_of(work, struct virtio_gpu_device, 281 cursorq.dequeue_work); 282 struct list_head reclaim_list; 283 struct virtio_gpu_vbuffer *entry, *tmp; 284 285 INIT_LIST_HEAD(&reclaim_list); 286 spin_lock(&vgdev->cursorq.qlock); 287 do { 288 virtqueue_disable_cb(vgdev->cursorq.vq); 289 reclaim_vbufs(vgdev->cursorq.vq, &reclaim_list); 290 } while (!virtqueue_enable_cb(vgdev->cursorq.vq)); 291 spin_unlock(&vgdev->cursorq.qlock); 292 293 list_for_each_entry_safe(entry, tmp, &reclaim_list, list) { 294 struct virtio_gpu_ctrl_hdr *resp = 295 (struct virtio_gpu_ctrl_hdr *)entry->resp_buf; 296 297 trace_virtio_gpu_cmd_response(vgdev->cursorq.vq, resp, entry->seqno); 298 list_del(&entry->list); 299 free_vbuf(vgdev, entry); 300 } 301 wake_up(&vgdev->cursorq.ack_queue); 302 } 303 304 /* Create sg_table from a vmalloc'd buffer. */ 305 static struct sg_table *vmalloc_to_sgt(char *data, uint32_t size, int *sg_ents) 306 { 307 int ret, s, i; 308 struct sg_table *sgt; 309 struct scatterlist *sg; 310 struct page *pg; 311 312 if (WARN_ON(!PAGE_ALIGNED(data))) 313 return NULL; 314 315 sgt = kmalloc_obj(*sgt, GFP_KERNEL); 316 if (!sgt) 317 return NULL; 318 319 *sg_ents = DIV_ROUND_UP(size, PAGE_SIZE); 320 ret = sg_alloc_table(sgt, *sg_ents, GFP_KERNEL); 321 if (ret) { 322 kfree(sgt); 323 return NULL; 324 } 325 326 for_each_sgtable_sg(sgt, sg, i) { 327 pg = vmalloc_to_page(data); 328 if (!pg) { 329 sg_free_table(sgt); 330 kfree(sgt); 331 return NULL; 332 } 333 334 s = min_t(int, PAGE_SIZE, size); 335 sg_set_page(sg, pg, s, 0); 336 337 size -= s; 338 data += s; 339 } 340 341 return sgt; 342 } 343 344 /* For drm_panic */ 345 static int virtio_gpu_panic_queue_ctrl_sgs(struct virtio_gpu_device *vgdev, 346 struct virtio_gpu_vbuffer *vbuf, 347 int elemcnt, 348 struct scatterlist **sgs, 349 int outcnt, 350 int incnt) 351 { 352 struct virtqueue *vq = vgdev->ctrlq.vq; 353 int ret; 354 355 if (vgdev->has_indirect) 356 elemcnt = 1; 357 358 if (vq->num_free < elemcnt) 359 return -ENOMEM; 360 361 ret = virtqueue_add_sgs(vq, sgs, outcnt, incnt, vbuf, GFP_ATOMIC); 362 WARN_ON(ret); 363 364 vbuf->seqno = ++vgdev->ctrlq.seqno; 365 trace_virtio_gpu_cmd_queue(vq, virtio_gpu_vbuf_ctrl_hdr(vbuf), vbuf->seqno); 366 367 atomic_inc(&vgdev->pending_commands); 368 369 return 0; 370 } 371 372 static int virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev, 373 struct virtio_gpu_vbuffer *vbuf, 374 struct virtio_gpu_fence *fence, 375 int elemcnt, 376 struct scatterlist **sgs, 377 int outcnt, 378 int incnt) 379 { 380 struct virtqueue *vq = vgdev->ctrlq.vq; 381 int ret, idx; 382 383 if (!drm_dev_enter(vgdev->ddev, &idx)) { 384 if (fence && vbuf->objs) 385 virtio_gpu_array_unlock_resv(vbuf->objs); 386 free_vbuf(vgdev, vbuf); 387 return -ENODEV; 388 } 389 390 if (vgdev->has_indirect) 391 elemcnt = 1; 392 393 again: 394 spin_lock(&vgdev->ctrlq.qlock); 395 396 if (vq->num_free < elemcnt) { 397 spin_unlock(&vgdev->ctrlq.qlock); 398 virtio_gpu_notify(vgdev); 399 wait_event(vgdev->ctrlq.ack_queue, vq->num_free >= elemcnt); 400 goto again; 401 } 402 403 /* now that the position of the vbuf in the virtqueue is known, we can 404 * finally set the fence id 405 */ 406 if (fence) { 407 virtio_gpu_fence_emit(vgdev, virtio_gpu_vbuf_ctrl_hdr(vbuf), 408 fence); 409 if (vbuf->objs) { 410 virtio_gpu_array_add_fence(vbuf->objs, &fence->f); 411 virtio_gpu_array_unlock_resv(vbuf->objs); 412 } 413 } 414 415 ret = virtqueue_add_sgs(vq, sgs, outcnt, incnt, vbuf, GFP_ATOMIC); 416 WARN_ON(ret); 417 418 vbuf->seqno = ++vgdev->ctrlq.seqno; 419 trace_virtio_gpu_cmd_queue(vq, virtio_gpu_vbuf_ctrl_hdr(vbuf), vbuf->seqno); 420 421 atomic_inc(&vgdev->pending_commands); 422 423 spin_unlock(&vgdev->ctrlq.qlock); 424 425 drm_dev_exit(idx); 426 return 0; 427 } 428 429 /* For drm_panic */ 430 static int virtio_gpu_panic_queue_ctrl_buffer(struct virtio_gpu_device *vgdev, 431 struct virtio_gpu_vbuffer *vbuf) 432 { 433 struct scatterlist *sgs[3], vcmd, vresp; 434 int elemcnt = 0, outcnt = 0, incnt = 0; 435 436 /* set up vcmd */ 437 sg_init_one(&vcmd, vbuf->buf, vbuf->size); 438 elemcnt++; 439 sgs[outcnt] = &vcmd; 440 outcnt++; 441 442 /* set up vresp */ 443 if (vbuf->resp_size) { 444 sg_init_one(&vresp, vbuf->resp_buf, vbuf->resp_size); 445 elemcnt++; 446 sgs[outcnt + incnt] = &vresp; 447 incnt++; 448 } 449 450 return virtio_gpu_panic_queue_ctrl_sgs(vgdev, vbuf, 451 elemcnt, sgs, 452 outcnt, incnt); 453 } 454 455 static int virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev, 456 struct virtio_gpu_vbuffer *vbuf, 457 struct virtio_gpu_fence *fence) 458 { 459 struct scatterlist *sgs[3], vcmd, vout, vresp; 460 struct sg_table *sgt = NULL; 461 int elemcnt = 0, outcnt = 0, incnt = 0, ret; 462 463 /* set up vcmd */ 464 sg_init_one(&vcmd, vbuf->buf, vbuf->size); 465 elemcnt++; 466 sgs[outcnt] = &vcmd; 467 outcnt++; 468 469 /* set up vout */ 470 if (vbuf->data_size) { 471 if (is_vmalloc_addr(vbuf->data_buf)) { 472 int sg_ents; 473 474 sgt = vmalloc_to_sgt(vbuf->data_buf, vbuf->data_size, 475 &sg_ents); 476 if (!sgt) { 477 if (fence && vbuf->objs) 478 virtio_gpu_array_unlock_resv(vbuf->objs); 479 return -ENOMEM; 480 } 481 482 elemcnt += sg_ents; 483 sgs[outcnt] = sgt->sgl; 484 } else { 485 sg_init_one(&vout, vbuf->data_buf, vbuf->data_size); 486 elemcnt++; 487 sgs[outcnt] = &vout; 488 } 489 outcnt++; 490 } 491 492 /* set up vresp */ 493 if (vbuf->resp_size) { 494 sg_init_one(&vresp, vbuf->resp_buf, vbuf->resp_size); 495 elemcnt++; 496 sgs[outcnt + incnt] = &vresp; 497 incnt++; 498 } 499 500 ret = virtio_gpu_queue_ctrl_sgs(vgdev, vbuf, fence, elemcnt, sgs, outcnt, 501 incnt); 502 503 if (sgt) { 504 sg_free_table(sgt); 505 kfree(sgt); 506 } 507 return ret; 508 } 509 510 /* For drm_panic */ 511 void virtio_gpu_panic_notify(struct virtio_gpu_device *vgdev) 512 { 513 bool notify; 514 515 if (!atomic_read(&vgdev->pending_commands)) 516 return; 517 518 atomic_set(&vgdev->pending_commands, 0); 519 notify = virtqueue_kick_prepare(vgdev->ctrlq.vq); 520 521 if (notify) 522 virtqueue_notify(vgdev->ctrlq.vq); 523 } 524 525 void virtio_gpu_notify(struct virtio_gpu_device *vgdev) 526 { 527 bool notify; 528 529 if (!atomic_read(&vgdev->pending_commands)) 530 return; 531 532 spin_lock(&vgdev->ctrlq.qlock); 533 atomic_set(&vgdev->pending_commands, 0); 534 notify = virtqueue_kick_prepare(vgdev->ctrlq.vq); 535 spin_unlock(&vgdev->ctrlq.qlock); 536 537 if (notify) 538 virtqueue_notify(vgdev->ctrlq.vq); 539 } 540 541 static int virtio_gpu_queue_ctrl_buffer(struct virtio_gpu_device *vgdev, 542 struct virtio_gpu_vbuffer *vbuf) 543 { 544 return virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, NULL); 545 } 546 547 static void virtio_gpu_queue_cursor(struct virtio_gpu_device *vgdev, 548 struct virtio_gpu_vbuffer *vbuf) 549 { 550 struct virtqueue *vq = vgdev->cursorq.vq; 551 struct scatterlist *sgs[1], ccmd; 552 int idx, ret, outcnt; 553 bool notify; 554 555 if (!drm_dev_enter(vgdev->ddev, &idx)) { 556 free_vbuf(vgdev, vbuf); 557 return; 558 } 559 560 sg_init_one(&ccmd, vbuf->buf, vbuf->size); 561 sgs[0] = &ccmd; 562 outcnt = 1; 563 564 spin_lock(&vgdev->cursorq.qlock); 565 retry: 566 ret = virtqueue_add_sgs(vq, sgs, outcnt, 0, vbuf, GFP_ATOMIC); 567 if (ret == -ENOSPC) { 568 spin_unlock(&vgdev->cursorq.qlock); 569 wait_event(vgdev->cursorq.ack_queue, vq->num_free >= outcnt); 570 spin_lock(&vgdev->cursorq.qlock); 571 goto retry; 572 } else { 573 vbuf->seqno = ++vgdev->cursorq.seqno; 574 trace_virtio_gpu_cmd_queue(vq, 575 virtio_gpu_vbuf_ctrl_hdr(vbuf), 576 vbuf->seqno); 577 578 notify = virtqueue_kick_prepare(vq); 579 } 580 581 spin_unlock(&vgdev->cursorq.qlock); 582 583 if (notify) 584 virtqueue_notify(vq); 585 586 drm_dev_exit(idx); 587 } 588 589 /* just create gem objects for userspace and long lived objects, 590 * just use dma_alloced pages for the queue objects? 591 */ 592 593 /* create a basic resource */ 594 void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev, 595 struct virtio_gpu_object *bo, 596 struct virtio_gpu_object_params *params, 597 struct virtio_gpu_object_array *objs, 598 struct virtio_gpu_fence *fence) 599 { 600 struct virtio_gpu_resource_create_2d *cmd_p; 601 struct virtio_gpu_vbuffer *vbuf; 602 603 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 604 memset(cmd_p, 0, sizeof(*cmd_p)); 605 vbuf->objs = objs; 606 607 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_CREATE_2D); 608 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 609 cmd_p->format = cpu_to_le32(params->format); 610 cmd_p->width = cpu_to_le32(params->width); 611 cmd_p->height = cpu_to_le32(params->height); 612 613 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 614 bo->created = true; 615 } 616 617 static void virtio_gpu_cmd_unref_cb(struct virtio_gpu_device *vgdev, 618 struct virtio_gpu_vbuffer *vbuf) 619 { 620 struct virtio_gpu_object *bo; 621 622 bo = vbuf->resp_cb_data; 623 vbuf->resp_cb_data = NULL; 624 625 virtio_gpu_cleanup_object(bo); 626 } 627 628 void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev, 629 struct virtio_gpu_object *bo) 630 { 631 struct virtio_gpu_resource_unref *cmd_p; 632 struct virtio_gpu_vbuffer *vbuf; 633 int ret; 634 635 cmd_p = virtio_gpu_alloc_cmd_cb(vgdev, &vbuf, sizeof(*cmd_p), 636 virtio_gpu_cmd_unref_cb); 637 memset(cmd_p, 0, sizeof(*cmd_p)); 638 639 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_UNREF); 640 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 641 642 vbuf->resp_cb_data = bo; 643 ret = virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 644 if (ret < 0) 645 virtio_gpu_cleanup_object(bo); 646 } 647 648 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev, 649 uint32_t scanout_id, uint32_t resource_id, 650 uint32_t width, uint32_t height, 651 uint32_t x, uint32_t y) 652 { 653 struct virtio_gpu_set_scanout *cmd_p; 654 struct virtio_gpu_vbuffer *vbuf; 655 656 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 657 memset(cmd_p, 0, sizeof(*cmd_p)); 658 659 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_SET_SCANOUT); 660 cmd_p->resource_id = cpu_to_le32(resource_id); 661 cmd_p->scanout_id = cpu_to_le32(scanout_id); 662 cmd_p->r.width = cpu_to_le32(width); 663 cmd_p->r.height = cpu_to_le32(height); 664 cmd_p->r.x = cpu_to_le32(x); 665 cmd_p->r.y = cpu_to_le32(y); 666 667 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 668 } 669 670 /* For drm_panic */ 671 void virtio_gpu_panic_cmd_resource_flush(struct virtio_gpu_device *vgdev, 672 uint32_t resource_id, 673 uint32_t x, uint32_t y, 674 uint32_t width, uint32_t height) 675 { 676 struct virtio_gpu_resource_flush *cmd_p; 677 struct virtio_gpu_vbuffer *vbuf; 678 679 cmd_p = virtio_gpu_panic_alloc_cmd_resp(vgdev, &vbuf, sizeof(*cmd_p)); 680 memset(cmd_p, 0, sizeof(*cmd_p)); 681 vbuf->objs = NULL; 682 683 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_FLUSH); 684 cmd_p->resource_id = cpu_to_le32(resource_id); 685 cmd_p->r.width = cpu_to_le32(width); 686 cmd_p->r.height = cpu_to_le32(height); 687 cmd_p->r.x = cpu_to_le32(x); 688 cmd_p->r.y = cpu_to_le32(y); 689 690 virtio_gpu_panic_queue_ctrl_buffer(vgdev, vbuf); 691 } 692 693 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev, 694 uint32_t resource_id, 695 uint32_t x, uint32_t y, 696 uint32_t width, uint32_t height, 697 struct virtio_gpu_object_array *objs, 698 struct virtio_gpu_fence *fence) 699 { 700 struct virtio_gpu_resource_flush *cmd_p; 701 struct virtio_gpu_vbuffer *vbuf; 702 703 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 704 memset(cmd_p, 0, sizeof(*cmd_p)); 705 vbuf->objs = objs; 706 707 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_FLUSH); 708 cmd_p->resource_id = cpu_to_le32(resource_id); 709 cmd_p->r.width = cpu_to_le32(width); 710 cmd_p->r.height = cpu_to_le32(height); 711 cmd_p->r.x = cpu_to_le32(x); 712 cmd_p->r.y = cpu_to_le32(y); 713 714 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 715 } 716 717 /* For drm_panic */ 718 int virtio_gpu_panic_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev, 719 uint64_t offset, 720 uint32_t width, uint32_t height, 721 uint32_t x, uint32_t y, 722 struct virtio_gpu_object_array *objs) 723 { 724 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 725 struct virtio_gpu_transfer_to_host_2d *cmd_p; 726 struct virtio_gpu_vbuffer *vbuf; 727 bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev); 728 729 if (virtio_gpu_is_shmem(bo) && use_dma_api) 730 dma_sync_sgtable_for_device(vgdev->vdev->dev.parent, 731 bo->base.sgt, DMA_TO_DEVICE); 732 733 cmd_p = virtio_gpu_panic_alloc_cmd_resp(vgdev, &vbuf, sizeof(*cmd_p)); 734 memset(cmd_p, 0, sizeof(*cmd_p)); 735 vbuf->objs = objs; 736 737 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D); 738 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 739 cmd_p->offset = cpu_to_le64(offset); 740 cmd_p->r.width = cpu_to_le32(width); 741 cmd_p->r.height = cpu_to_le32(height); 742 cmd_p->r.x = cpu_to_le32(x); 743 cmd_p->r.y = cpu_to_le32(y); 744 745 return virtio_gpu_panic_queue_ctrl_buffer(vgdev, vbuf); 746 } 747 748 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev, 749 uint64_t offset, 750 uint32_t width, uint32_t height, 751 uint32_t x, uint32_t y, 752 struct virtio_gpu_object_array *objs, 753 struct virtio_gpu_fence *fence) 754 { 755 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 756 struct virtio_gpu_transfer_to_host_2d *cmd_p; 757 struct virtio_gpu_vbuffer *vbuf; 758 bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev); 759 760 if (virtio_gpu_is_shmem(bo) && use_dma_api) 761 dma_sync_sgtable_for_device(vgdev->vdev->dev.parent, 762 bo->base.sgt, DMA_TO_DEVICE); 763 764 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 765 memset(cmd_p, 0, sizeof(*cmd_p)); 766 vbuf->objs = objs; 767 768 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D); 769 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 770 cmd_p->offset = cpu_to_le64(offset); 771 cmd_p->r.width = cpu_to_le32(width); 772 cmd_p->r.height = cpu_to_le32(height); 773 cmd_p->r.x = cpu_to_le32(x); 774 cmd_p->r.y = cpu_to_le32(y); 775 776 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 777 } 778 779 static void 780 virtio_gpu_cmd_resource_attach_backing(struct virtio_gpu_device *vgdev, 781 uint32_t resource_id, 782 struct virtio_gpu_mem_entry *ents, 783 uint32_t nents, 784 struct virtio_gpu_fence *fence) 785 { 786 struct virtio_gpu_resource_attach_backing *cmd_p; 787 struct virtio_gpu_vbuffer *vbuf; 788 789 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 790 memset(cmd_p, 0, sizeof(*cmd_p)); 791 792 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING); 793 cmd_p->resource_id = cpu_to_le32(resource_id); 794 cmd_p->nr_entries = cpu_to_le32(nents); 795 796 vbuf->data_buf = ents; 797 vbuf->data_size = sizeof(*ents) * nents; 798 799 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 800 } 801 802 static void 803 virtio_gpu_cmd_resource_detach_backing(struct virtio_gpu_device *vgdev, 804 uint32_t resource_id, 805 struct virtio_gpu_fence *fence) 806 { 807 struct virtio_gpu_resource_detach_backing *cmd_p; 808 struct virtio_gpu_vbuffer *vbuf; 809 810 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 811 memset(cmd_p, 0, sizeof(*cmd_p)); 812 813 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING); 814 cmd_p->resource_id = cpu_to_le32(resource_id); 815 816 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 817 } 818 819 static void virtio_gpu_cmd_get_display_info_cb(struct virtio_gpu_device *vgdev, 820 struct virtio_gpu_vbuffer *vbuf) 821 { 822 struct virtio_gpu_resp_display_info *resp = 823 (struct virtio_gpu_resp_display_info *)vbuf->resp_buf; 824 int i; 825 826 spin_lock(&vgdev->display_info_lock); 827 for (i = 0; i < vgdev->num_scanouts; i++) { 828 vgdev->outputs[i].info = resp->pmodes[i]; 829 if (resp->pmodes[i].enabled) { 830 DRM_DEBUG("output %d: %dx%d+%d+%d", i, 831 le32_to_cpu(resp->pmodes[i].r.width), 832 le32_to_cpu(resp->pmodes[i].r.height), 833 le32_to_cpu(resp->pmodes[i].r.x), 834 le32_to_cpu(resp->pmodes[i].r.y)); 835 } else { 836 DRM_DEBUG("output %d: disabled", i); 837 } 838 } 839 840 vgdev->display_info_pending = false; 841 spin_unlock(&vgdev->display_info_lock); 842 wake_up(&vgdev->resp_wq); 843 844 if (!drm_helper_hpd_irq_event(vgdev->ddev)) 845 drm_kms_helper_hotplug_event(vgdev->ddev); 846 } 847 848 static void virtio_gpu_cmd_get_capset_info_cb(struct virtio_gpu_device *vgdev, 849 struct virtio_gpu_vbuffer *vbuf) 850 { 851 struct virtio_gpu_get_capset_info *cmd = 852 (struct virtio_gpu_get_capset_info *)vbuf->buf; 853 struct virtio_gpu_resp_capset_info *resp = 854 (struct virtio_gpu_resp_capset_info *)vbuf->resp_buf; 855 int i = le32_to_cpu(cmd->capset_index); 856 857 spin_lock(&vgdev->display_info_lock); 858 if (vgdev->capsets) { 859 vgdev->capsets[i].id = le32_to_cpu(resp->capset_id); 860 vgdev->capsets[i].max_version = le32_to_cpu(resp->capset_max_version); 861 vgdev->capsets[i].max_size = le32_to_cpu(resp->capset_max_size); 862 } else { 863 DRM_ERROR("invalid capset memory."); 864 } 865 spin_unlock(&vgdev->display_info_lock); 866 wake_up(&vgdev->resp_wq); 867 } 868 869 static void virtio_gpu_cmd_capset_cb(struct virtio_gpu_device *vgdev, 870 struct virtio_gpu_vbuffer *vbuf) 871 { 872 struct virtio_gpu_get_capset *cmd = 873 (struct virtio_gpu_get_capset *)vbuf->buf; 874 struct virtio_gpu_resp_capset *resp = 875 (struct virtio_gpu_resp_capset *)vbuf->resp_buf; 876 struct virtio_gpu_drv_cap_cache *cache_ent; 877 878 spin_lock(&vgdev->display_info_lock); 879 list_for_each_entry(cache_ent, &vgdev->cap_cache, head) { 880 if (cache_ent->version == le32_to_cpu(cmd->capset_version) && 881 cache_ent->id == le32_to_cpu(cmd->capset_id)) { 882 memcpy(cache_ent->caps_cache, resp->capset_data, 883 cache_ent->size); 884 /* Copy must occur before is_valid is signalled. */ 885 smp_wmb(); 886 atomic_set(&cache_ent->is_valid, 1); 887 break; 888 } 889 } 890 spin_unlock(&vgdev->display_info_lock); 891 wake_up_all(&vgdev->resp_wq); 892 } 893 894 static int virtio_get_edid_block(void *data, u8 *buf, 895 unsigned int block, size_t len) 896 { 897 struct virtio_gpu_resp_edid *resp = data; 898 size_t start = block * EDID_LENGTH; 899 900 if (start + len > le32_to_cpu(resp->size)) 901 return -EINVAL; 902 memcpy(buf, resp->edid + start, len); 903 return 0; 904 } 905 906 static void virtio_gpu_cmd_get_edid_cb(struct virtio_gpu_device *vgdev, 907 struct virtio_gpu_vbuffer *vbuf) 908 { 909 struct virtio_gpu_cmd_get_edid *cmd = 910 (struct virtio_gpu_cmd_get_edid *)vbuf->buf; 911 struct virtio_gpu_resp_edid *resp = 912 (struct virtio_gpu_resp_edid *)vbuf->resp_buf; 913 uint32_t scanout = le32_to_cpu(cmd->scanout); 914 struct virtio_gpu_output *output; 915 const struct drm_edid *new_edid, *old_edid; 916 917 if (scanout >= vgdev->num_scanouts) 918 return; 919 output = vgdev->outputs + scanout; 920 921 new_edid = drm_edid_read_custom(&output->conn, virtio_get_edid_block, resp); 922 drm_edid_connector_update(&output->conn, new_edid); 923 924 spin_lock(&vgdev->display_info_lock); 925 old_edid = output->drm_edid; 926 output->drm_edid = new_edid; 927 spin_unlock(&vgdev->display_info_lock); 928 929 drm_edid_free(old_edid); 930 wake_up(&vgdev->resp_wq); 931 } 932 933 int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev) 934 { 935 struct virtio_gpu_ctrl_hdr *cmd_p; 936 struct virtio_gpu_vbuffer *vbuf; 937 void *resp_buf; 938 939 resp_buf = kzalloc_obj(struct virtio_gpu_resp_display_info, GFP_KERNEL); 940 if (!resp_buf) 941 return -ENOMEM; 942 943 cmd_p = virtio_gpu_alloc_cmd_resp 944 (vgdev, &virtio_gpu_cmd_get_display_info_cb, &vbuf, 945 sizeof(*cmd_p), sizeof(struct virtio_gpu_resp_display_info), 946 resp_buf); 947 memset(cmd_p, 0, sizeof(*cmd_p)); 948 949 vgdev->display_info_pending = true; 950 cmd_p->type = cpu_to_le32(VIRTIO_GPU_CMD_GET_DISPLAY_INFO); 951 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 952 return 0; 953 } 954 955 int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx) 956 { 957 struct virtio_gpu_get_capset_info *cmd_p; 958 struct virtio_gpu_vbuffer *vbuf; 959 void *resp_buf; 960 961 resp_buf = kzalloc_obj(struct virtio_gpu_resp_capset_info, GFP_KERNEL); 962 if (!resp_buf) 963 return -ENOMEM; 964 965 cmd_p = virtio_gpu_alloc_cmd_resp 966 (vgdev, &virtio_gpu_cmd_get_capset_info_cb, &vbuf, 967 sizeof(*cmd_p), sizeof(struct virtio_gpu_resp_capset_info), 968 resp_buf); 969 memset(cmd_p, 0, sizeof(*cmd_p)); 970 971 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_CAPSET_INFO); 972 cmd_p->capset_index = cpu_to_le32(idx); 973 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 974 return 0; 975 } 976 977 int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev, 978 int idx, int version, 979 struct virtio_gpu_drv_cap_cache **cache_p) 980 { 981 struct virtio_gpu_get_capset *cmd_p; 982 struct virtio_gpu_vbuffer *vbuf; 983 int max_size; 984 struct virtio_gpu_drv_cap_cache *cache_ent; 985 struct virtio_gpu_drv_cap_cache *search_ent; 986 void *resp_buf; 987 988 *cache_p = NULL; 989 990 if (idx >= vgdev->num_capsets) 991 return -EINVAL; 992 993 if (version > vgdev->capsets[idx].max_version) 994 return -EINVAL; 995 996 cache_ent = kzalloc_obj(*cache_ent, GFP_KERNEL); 997 if (!cache_ent) 998 return -ENOMEM; 999 1000 max_size = vgdev->capsets[idx].max_size; 1001 cache_ent->caps_cache = kmalloc(max_size, GFP_KERNEL); 1002 if (!cache_ent->caps_cache) { 1003 kfree(cache_ent); 1004 return -ENOMEM; 1005 } 1006 1007 resp_buf = kzalloc(sizeof(struct virtio_gpu_resp_capset) + max_size, 1008 GFP_KERNEL); 1009 if (!resp_buf) { 1010 kfree(cache_ent->caps_cache); 1011 kfree(cache_ent); 1012 return -ENOMEM; 1013 } 1014 1015 cache_ent->version = version; 1016 cache_ent->id = vgdev->capsets[idx].id; 1017 atomic_set(&cache_ent->is_valid, 0); 1018 cache_ent->size = max_size; 1019 spin_lock(&vgdev->display_info_lock); 1020 /* Search while under lock in case it was added by another task. */ 1021 list_for_each_entry(search_ent, &vgdev->cap_cache, head) { 1022 if (search_ent->id == vgdev->capsets[idx].id && 1023 search_ent->version == version) { 1024 *cache_p = search_ent; 1025 break; 1026 } 1027 } 1028 if (!*cache_p) 1029 list_add_tail(&cache_ent->head, &vgdev->cap_cache); 1030 spin_unlock(&vgdev->display_info_lock); 1031 1032 if (*cache_p) { 1033 /* Entry was found, so free everything that was just created. */ 1034 kfree(resp_buf); 1035 kfree(cache_ent->caps_cache); 1036 kfree(cache_ent); 1037 return 0; 1038 } 1039 1040 cmd_p = virtio_gpu_alloc_cmd_resp 1041 (vgdev, &virtio_gpu_cmd_capset_cb, &vbuf, sizeof(*cmd_p), 1042 sizeof(struct virtio_gpu_resp_capset) + max_size, 1043 resp_buf); 1044 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_CAPSET); 1045 cmd_p->capset_id = cpu_to_le32(vgdev->capsets[idx].id); 1046 cmd_p->capset_version = cpu_to_le32(version); 1047 *cache_p = cache_ent; 1048 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1049 1050 return 0; 1051 } 1052 1053 int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev) 1054 { 1055 struct virtio_gpu_cmd_get_edid *cmd_p; 1056 struct virtio_gpu_vbuffer *vbuf; 1057 void *resp_buf; 1058 int scanout; 1059 1060 if (WARN_ON(!vgdev->has_edid)) 1061 return -EINVAL; 1062 1063 for (scanout = 0; scanout < vgdev->num_scanouts; scanout++) { 1064 resp_buf = kzalloc_obj(struct virtio_gpu_resp_edid, GFP_KERNEL); 1065 if (!resp_buf) 1066 return -ENOMEM; 1067 1068 cmd_p = virtio_gpu_alloc_cmd_resp 1069 (vgdev, &virtio_gpu_cmd_get_edid_cb, &vbuf, 1070 sizeof(*cmd_p), sizeof(struct virtio_gpu_resp_edid), 1071 resp_buf); 1072 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_EDID); 1073 cmd_p->scanout = cpu_to_le32(scanout); 1074 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1075 } 1076 1077 return 0; 1078 } 1079 1080 void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id, 1081 uint32_t context_init, uint32_t nlen, 1082 const char *name) 1083 { 1084 struct virtio_gpu_ctx_create *cmd_p; 1085 struct virtio_gpu_vbuffer *vbuf; 1086 1087 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1088 memset(cmd_p, 0, sizeof(*cmd_p)); 1089 1090 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_CREATE); 1091 cmd_p->hdr.ctx_id = cpu_to_le32(id); 1092 cmd_p->nlen = cpu_to_le32(nlen); 1093 cmd_p->context_init = cpu_to_le32(context_init); 1094 strscpy(cmd_p->debug_name, name, sizeof(cmd_p->debug_name)); 1095 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1096 } 1097 1098 void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev, 1099 uint32_t id) 1100 { 1101 struct virtio_gpu_ctx_destroy *cmd_p; 1102 struct virtio_gpu_vbuffer *vbuf; 1103 1104 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1105 memset(cmd_p, 0, sizeof(*cmd_p)); 1106 1107 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_DESTROY); 1108 cmd_p->hdr.ctx_id = cpu_to_le32(id); 1109 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1110 } 1111 1112 void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev, 1113 uint32_t ctx_id, 1114 struct virtio_gpu_object_array *objs) 1115 { 1116 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 1117 struct virtio_gpu_ctx_resource *cmd_p; 1118 struct virtio_gpu_vbuffer *vbuf; 1119 1120 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1121 memset(cmd_p, 0, sizeof(*cmd_p)); 1122 vbuf->objs = objs; 1123 1124 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE); 1125 cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id); 1126 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1127 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1128 } 1129 1130 void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev, 1131 uint32_t ctx_id, 1132 struct virtio_gpu_object_array *objs) 1133 { 1134 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 1135 struct virtio_gpu_ctx_resource *cmd_p; 1136 struct virtio_gpu_vbuffer *vbuf; 1137 1138 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1139 memset(cmd_p, 0, sizeof(*cmd_p)); 1140 vbuf->objs = objs; 1141 1142 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE); 1143 cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id); 1144 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1145 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1146 } 1147 1148 void 1149 virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev, 1150 struct virtio_gpu_object *bo, 1151 struct virtio_gpu_object_params *params, 1152 struct virtio_gpu_object_array *objs, 1153 struct virtio_gpu_fence *fence) 1154 { 1155 struct virtio_gpu_resource_create_3d *cmd_p; 1156 struct virtio_gpu_vbuffer *vbuf; 1157 1158 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1159 memset(cmd_p, 0, sizeof(*cmd_p)); 1160 vbuf->objs = objs; 1161 1162 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_CREATE_3D); 1163 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1164 cmd_p->format = cpu_to_le32(params->format); 1165 cmd_p->width = cpu_to_le32(params->width); 1166 cmd_p->height = cpu_to_le32(params->height); 1167 1168 cmd_p->target = cpu_to_le32(params->target); 1169 cmd_p->bind = cpu_to_le32(params->bind); 1170 cmd_p->depth = cpu_to_le32(params->depth); 1171 cmd_p->array_size = cpu_to_le32(params->array_size); 1172 cmd_p->last_level = cpu_to_le32(params->last_level); 1173 cmd_p->nr_samples = cpu_to_le32(params->nr_samples); 1174 cmd_p->flags = cpu_to_le32(params->flags); 1175 1176 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 1177 1178 bo->created = true; 1179 } 1180 1181 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev, 1182 uint32_t ctx_id, 1183 uint64_t offset, uint32_t level, 1184 uint32_t stride, 1185 uint32_t layer_stride, 1186 struct drm_virtgpu_3d_box *box, 1187 struct virtio_gpu_object_array *objs, 1188 struct virtio_gpu_fence *fence) 1189 { 1190 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 1191 struct virtio_gpu_transfer_host_3d *cmd_p; 1192 struct virtio_gpu_vbuffer *vbuf; 1193 bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev); 1194 1195 if (virtio_gpu_is_shmem(bo) && use_dma_api) 1196 dma_sync_sgtable_for_device(vgdev->vdev->dev.parent, 1197 bo->base.sgt, DMA_TO_DEVICE); 1198 1199 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1200 memset(cmd_p, 0, sizeof(*cmd_p)); 1201 1202 vbuf->objs = objs; 1203 1204 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D); 1205 cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id); 1206 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1207 convert_to_hw_box(&cmd_p->box, box); 1208 cmd_p->offset = cpu_to_le64(offset); 1209 cmd_p->level = cpu_to_le32(level); 1210 cmd_p->stride = cpu_to_le32(stride); 1211 cmd_p->layer_stride = cpu_to_le32(layer_stride); 1212 1213 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 1214 } 1215 1216 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev, 1217 uint32_t ctx_id, 1218 uint64_t offset, uint32_t level, 1219 uint32_t stride, 1220 uint32_t layer_stride, 1221 struct drm_virtgpu_3d_box *box, 1222 struct virtio_gpu_object_array *objs, 1223 struct virtio_gpu_fence *fence) 1224 { 1225 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 1226 struct virtio_gpu_transfer_host_3d *cmd_p; 1227 struct virtio_gpu_vbuffer *vbuf; 1228 1229 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1230 memset(cmd_p, 0, sizeof(*cmd_p)); 1231 1232 vbuf->objs = objs; 1233 1234 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D); 1235 cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id); 1236 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1237 convert_to_hw_box(&cmd_p->box, box); 1238 cmd_p->offset = cpu_to_le64(offset); 1239 cmd_p->level = cpu_to_le32(level); 1240 cmd_p->stride = cpu_to_le32(stride); 1241 cmd_p->layer_stride = cpu_to_le32(layer_stride); 1242 1243 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 1244 } 1245 1246 void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev, 1247 void *data, uint32_t data_size, 1248 uint32_t ctx_id, 1249 struct virtio_gpu_object_array *objs, 1250 struct virtio_gpu_fence *fence) 1251 { 1252 struct virtio_gpu_cmd_submit *cmd_p; 1253 struct virtio_gpu_vbuffer *vbuf; 1254 1255 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1256 memset(cmd_p, 0, sizeof(*cmd_p)); 1257 1258 vbuf->data_buf = data; 1259 vbuf->data_size = data_size; 1260 vbuf->objs = objs; 1261 1262 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_SUBMIT_3D); 1263 cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id); 1264 cmd_p->size = cpu_to_le32(data_size); 1265 1266 virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); 1267 } 1268 1269 void virtio_gpu_object_attach(struct virtio_gpu_device *vgdev, 1270 struct virtio_gpu_object *obj, 1271 struct virtio_gpu_mem_entry *ents, 1272 unsigned int nents) 1273 { 1274 if (obj->attached) 1275 return; 1276 1277 virtio_gpu_cmd_resource_attach_backing(vgdev, obj->hw_res_handle, 1278 ents, nents, NULL); 1279 1280 obj->attached = true; 1281 } 1282 1283 void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev, 1284 struct virtio_gpu_object *obj, 1285 struct virtio_gpu_fence *fence) 1286 { 1287 if (!obj->attached) 1288 return; 1289 1290 virtio_gpu_cmd_resource_detach_backing(vgdev, obj->hw_res_handle, 1291 fence); 1292 1293 obj->attached = false; 1294 } 1295 1296 void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev, 1297 struct virtio_gpu_output *output) 1298 { 1299 struct virtio_gpu_vbuffer *vbuf; 1300 struct virtio_gpu_update_cursor *cur_p; 1301 1302 output->cursor.pos.scanout_id = cpu_to_le32(output->index); 1303 cur_p = virtio_gpu_alloc_cursor(vgdev, &vbuf); 1304 memcpy(cur_p, &output->cursor, sizeof(output->cursor)); 1305 virtio_gpu_queue_cursor(vgdev, vbuf); 1306 } 1307 1308 static void virtio_gpu_cmd_resource_uuid_cb(struct virtio_gpu_device *vgdev, 1309 struct virtio_gpu_vbuffer *vbuf) 1310 { 1311 struct virtio_gpu_object *obj = 1312 gem_to_virtio_gpu_obj(vbuf->objs->objs[0]); 1313 struct virtio_gpu_resp_resource_uuid *resp = 1314 (struct virtio_gpu_resp_resource_uuid *)vbuf->resp_buf; 1315 uint32_t resp_type = le32_to_cpu(resp->hdr.type); 1316 1317 spin_lock(&vgdev->resource_export_lock); 1318 WARN_ON(obj->uuid_state != STATE_INITIALIZING); 1319 1320 if (resp_type == VIRTIO_GPU_RESP_OK_RESOURCE_UUID && 1321 obj->uuid_state == STATE_INITIALIZING) { 1322 import_uuid(&obj->uuid, resp->uuid); 1323 obj->uuid_state = STATE_OK; 1324 } else { 1325 obj->uuid_state = STATE_ERR; 1326 } 1327 spin_unlock(&vgdev->resource_export_lock); 1328 1329 wake_up_all(&vgdev->resp_wq); 1330 } 1331 1332 int 1333 virtio_gpu_cmd_resource_assign_uuid(struct virtio_gpu_device *vgdev, 1334 struct virtio_gpu_object_array *objs) 1335 { 1336 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 1337 struct virtio_gpu_resource_assign_uuid *cmd_p; 1338 struct virtio_gpu_vbuffer *vbuf; 1339 struct virtio_gpu_resp_resource_uuid *resp_buf; 1340 1341 resp_buf = kzalloc_obj(*resp_buf, GFP_KERNEL); 1342 if (!resp_buf) { 1343 spin_lock(&vgdev->resource_export_lock); 1344 bo->uuid_state = STATE_ERR; 1345 spin_unlock(&vgdev->resource_export_lock); 1346 virtio_gpu_array_put_free(objs); 1347 return -ENOMEM; 1348 } 1349 1350 cmd_p = virtio_gpu_alloc_cmd_resp 1351 (vgdev, virtio_gpu_cmd_resource_uuid_cb, &vbuf, sizeof(*cmd_p), 1352 sizeof(struct virtio_gpu_resp_resource_uuid), resp_buf); 1353 memset(cmd_p, 0, sizeof(*cmd_p)); 1354 1355 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_ASSIGN_UUID); 1356 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1357 1358 vbuf->objs = objs; 1359 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1360 return 0; 1361 } 1362 1363 static void virtio_gpu_cmd_resource_map_cb(struct virtio_gpu_device *vgdev, 1364 struct virtio_gpu_vbuffer *vbuf) 1365 { 1366 struct virtio_gpu_object *bo = 1367 gem_to_virtio_gpu_obj(vbuf->objs->objs[0]); 1368 struct virtio_gpu_resp_map_info *resp = 1369 (struct virtio_gpu_resp_map_info *)vbuf->resp_buf; 1370 struct virtio_gpu_object_vram *vram = to_virtio_gpu_vram(bo); 1371 uint32_t resp_type = le32_to_cpu(resp->hdr.type); 1372 1373 spin_lock(&vgdev->host_visible_lock); 1374 1375 if (resp_type == VIRTIO_GPU_RESP_OK_MAP_INFO) { 1376 vram->map_info = resp->map_info; 1377 vram->map_state = STATE_OK; 1378 } else { 1379 vram->map_state = STATE_ERR; 1380 } 1381 1382 spin_unlock(&vgdev->host_visible_lock); 1383 wake_up_all(&vgdev->resp_wq); 1384 } 1385 1386 int virtio_gpu_cmd_map(struct virtio_gpu_device *vgdev, 1387 struct virtio_gpu_object_array *objs, uint64_t offset) 1388 { 1389 struct virtio_gpu_resource_map_blob *cmd_p; 1390 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); 1391 struct virtio_gpu_vbuffer *vbuf; 1392 struct virtio_gpu_resp_map_info *resp_buf; 1393 1394 resp_buf = kzalloc_obj(*resp_buf, GFP_KERNEL); 1395 if (!resp_buf) 1396 return -ENOMEM; 1397 1398 cmd_p = virtio_gpu_alloc_cmd_resp 1399 (vgdev, virtio_gpu_cmd_resource_map_cb, &vbuf, sizeof(*cmd_p), 1400 sizeof(struct virtio_gpu_resp_map_info), resp_buf); 1401 memset(cmd_p, 0, sizeof(*cmd_p)); 1402 1403 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_MAP_BLOB); 1404 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1405 cmd_p->offset = cpu_to_le64(offset); 1406 vbuf->objs = objs; 1407 1408 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1409 return 0; 1410 } 1411 1412 void virtio_gpu_cmd_unmap(struct virtio_gpu_device *vgdev, 1413 struct virtio_gpu_object *bo) 1414 { 1415 struct virtio_gpu_resource_unmap_blob *cmd_p; 1416 struct virtio_gpu_vbuffer *vbuf; 1417 1418 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1419 memset(cmd_p, 0, sizeof(*cmd_p)); 1420 1421 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_UNMAP_BLOB); 1422 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1423 1424 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1425 } 1426 1427 void 1428 virtio_gpu_cmd_resource_create_blob(struct virtio_gpu_device *vgdev, 1429 struct virtio_gpu_object *bo, 1430 struct virtio_gpu_object_params *params, 1431 struct virtio_gpu_mem_entry *ents, 1432 uint32_t nents) 1433 { 1434 struct virtio_gpu_resource_create_blob *cmd_p; 1435 struct virtio_gpu_vbuffer *vbuf; 1436 1437 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1438 memset(cmd_p, 0, sizeof(*cmd_p)); 1439 1440 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB); 1441 cmd_p->hdr.ctx_id = cpu_to_le32(params->ctx_id); 1442 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1443 cmd_p->blob_mem = cpu_to_le32(params->blob_mem); 1444 cmd_p->blob_flags = cpu_to_le32(params->blob_flags); 1445 cmd_p->blob_id = cpu_to_le64(params->blob_id); 1446 cmd_p->size = cpu_to_le64(params->size); 1447 cmd_p->nr_entries = cpu_to_le32(nents); 1448 1449 vbuf->data_buf = ents; 1450 vbuf->data_size = sizeof(*ents) * nents; 1451 1452 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1453 bo->created = true; 1454 1455 if (nents) 1456 bo->attached = true; 1457 } 1458 1459 void virtio_gpu_cmd_set_scanout_blob(struct virtio_gpu_device *vgdev, 1460 uint32_t scanout_id, 1461 struct virtio_gpu_object *bo, 1462 struct drm_framebuffer *fb, 1463 uint32_t width, uint32_t height, 1464 uint32_t x, uint32_t y) 1465 { 1466 uint32_t i; 1467 struct virtio_gpu_set_scanout_blob *cmd_p; 1468 struct virtio_gpu_vbuffer *vbuf; 1469 uint32_t format = virtio_gpu_translate_format(fb->format->format); 1470 1471 cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); 1472 memset(cmd_p, 0, sizeof(*cmd_p)); 1473 1474 cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_SET_SCANOUT_BLOB); 1475 cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); 1476 cmd_p->scanout_id = cpu_to_le32(scanout_id); 1477 1478 cmd_p->format = cpu_to_le32(format); 1479 cmd_p->width = cpu_to_le32(fb->width); 1480 cmd_p->height = cpu_to_le32(fb->height); 1481 1482 for (i = 0; i < 4; i++) { 1483 cmd_p->strides[i] = cpu_to_le32(fb->pitches[i]); 1484 cmd_p->offsets[i] = cpu_to_le32(fb->offsets[i]); 1485 } 1486 1487 cmd_p->r.width = cpu_to_le32(width); 1488 cmd_p->r.height = cpu_to_le32(height); 1489 cmd_p->r.x = cpu_to_le32(x); 1490 cmd_p->r.y = cpu_to_le32(y); 1491 1492 virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); 1493 } 1494