nouveau_gem.c

   1/*
   2 * Copyright (C) 2008 Ben Skeggs.
   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
  27#include <drm/drm_gem_ttm_helper.h>
  28
  29#include "nouveau_drv.h"
  30#include "nouveau_dma.h"
  31#include "nouveau_fence.h"
  32#include "nouveau_abi16.h"
  33
  34#include "nouveau_ttm.h"
  35#include "nouveau_gem.h"
  36#include "nouveau_mem.h"
  37#include "nouveau_vmm.h"
  38
  39#include <nvif/class.h>
  40#include <nvif/push206e.h>
  41
  42static vm_fault_t nouveau_ttm_fault(struct vm_fault *vmf)
  43{
  44	struct vm_area_struct *vma = vmf->vma;
  45	struct ttm_buffer_object *bo = vma->vm_private_data;
  46	pgprot_t prot;
  47	vm_fault_t ret;
  48
  49	ret = ttm_bo_vm_reserve(bo, vmf);
  50	if (ret)
  51		return ret;
  52
  53	ret = nouveau_ttm_fault_reserve_notify(bo);
  54	if (ret)
  55		goto error_unlock;
  56
  57	nouveau_bo_del_io_reserve_lru(bo);
  58	prot = vm_get_page_prot(vma->vm_flags);
  59	ret = ttm_bo_vm_fault_reserved(vmf, prot, TTM_BO_VM_NUM_PREFAULT);
  60	nouveau_bo_add_io_reserve_lru(bo);
  61	if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT))
  62		return ret;
  63
  64error_unlock:
  65	dma_resv_unlock(bo->base.resv);
  66	return ret;
  67}
  68
  69static const struct vm_operations_struct nouveau_ttm_vm_ops = {
  70	.fault = nouveau_ttm_fault,
  71	.open = ttm_bo_vm_open,
  72	.close = ttm_bo_vm_close,
  73	.access = ttm_bo_vm_access
  74};
  75
  76void
  77nouveau_gem_object_del(struct drm_gem_object *gem)
  78{
  79	struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  80	struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  81	struct device *dev = drm->dev->dev;
  82	int ret;
  83
  84	ret = pm_runtime_get_sync(dev);
  85	if (WARN_ON(ret < 0 && ret != -EACCES)) {
  86		pm_runtime_put_autosuspend(dev);
  87		return;
  88	}
  89
  90	ttm_bo_fini(&nvbo->bo);
  91
  92	pm_runtime_mark_last_busy(dev);
  93	pm_runtime_put_autosuspend(dev);
  94}
  95
  96int
  97nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  98{
  99	struct nouveau_cli *cli = nouveau_cli(file_priv);
 100	struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 101	struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 102	struct device *dev = drm->dev->dev;
 103	struct nouveau_uvmm *uvmm = nouveau_cli_uvmm(cli);
 104	struct nouveau_vmm *vmm = nouveau_cli_vmm(cli);
 105	struct nouveau_vma *vma;
 106	int ret;
 107
 108	if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
 109		return 0;
 110
 111	if (nvbo->no_share && uvmm &&
 112	    drm_gpuvm_resv(&uvmm->base) != nvbo->bo.base.resv)
 113		return -EPERM;
 114
 115	ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 116	if (ret)
 117		return ret;
 118
 119	ret = pm_runtime_get_sync(dev);
 120	if (ret < 0 && ret != -EACCES) {
 121		pm_runtime_put_autosuspend(dev);
 122		goto out;
 123	}
 124
 125	/* only create a VMA on binding */
 126	if (!nouveau_cli_uvmm(cli))
 127		ret = nouveau_vma_new(nvbo, vmm, &vma);
 128	else
 129		ret = 0;
 130	pm_runtime_mark_last_busy(dev);
 131	pm_runtime_put_autosuspend(dev);
 132out:
 133	ttm_bo_unreserve(&nvbo->bo);
 134	return ret;
 135}
 136
 137struct nouveau_gem_object_unmap {
 138	struct nouveau_cli_work work;
 139	struct nouveau_vma *vma;
 140};
 141
 142static void
 143nouveau_gem_object_delete(struct nouveau_vma *vma)
 144{
 145	nouveau_fence_unref(&vma->fence);
 146	nouveau_vma_del(&vma);
 147}
 148
 149static void
 150nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
 151{
 152	struct nouveau_gem_object_unmap *work =
 153		container_of(w, typeof(*work), work);
 154	nouveau_gem_object_delete(work->vma);
 155	kfree(work);
 156}
 157
 158static void
 159nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
 160{
 161	struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
 162	struct nouveau_gem_object_unmap *work;
 163
 164	list_del_init(&vma->head);
 165
 166	if (!fence) {
 167		nouveau_gem_object_delete(vma);
 168		return;
 169	}
 170
 171	if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
 172		WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
 173		nouveau_gem_object_delete(vma);
 174		return;
 175	}
 176
 177	work->work.func = nouveau_gem_object_delete_work;
 178	work->vma = vma;
 179	nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
 180}
 181
 182void
 183nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 184{
 185	struct nouveau_cli *cli = nouveau_cli(file_priv);
 186	struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 187	struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 188	struct device *dev = drm->dev->dev;
 189	struct nouveau_vmm *vmm = nouveau_cli_vmm(cli);
 190	struct nouveau_vma *vma;
 191	int ret;
 192
 193	if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
 194		return;
 195
 196	if (nouveau_cli_uvmm(cli))
 197		return;
 198
 199	ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
 200	if (ret)
 201		return;
 202
 203	vma = nouveau_vma_find(nvbo, vmm);
 204	if (vma) {
 205		if (--vma->refs == 0) {
 206			ret = pm_runtime_get_sync(dev);
 207			if (!WARN_ON(ret < 0 && ret != -EACCES)) {
 208				nouveau_gem_object_unmap(nvbo, vma);
 209				pm_runtime_mark_last_busy(dev);
 210			}
 211			pm_runtime_put_autosuspend(dev);
 212		}
 213	}
 214	ttm_bo_unreserve(&nvbo->bo);
 215}
 216
 217const struct drm_gem_object_funcs nouveau_gem_object_funcs = {
 218	.free = nouveau_gem_object_del,
 219	.open = nouveau_gem_object_open,
 220	.close = nouveau_gem_object_close,
 221	.export = nouveau_gem_prime_export,
 222	.pin = nouveau_gem_prime_pin,
 223	.unpin = nouveau_gem_prime_unpin,
 224	.get_sg_table = nouveau_gem_prime_get_sg_table,
 225	.vmap = drm_gem_ttm_vmap,
 226	.vunmap = drm_gem_ttm_vunmap,
 227	.mmap = drm_gem_ttm_mmap,
 228	.vm_ops = &nouveau_ttm_vm_ops,
 229};
 230
 231int
 232nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 233		uint32_t tile_mode, uint32_t tile_flags,
 234		struct nouveau_bo **pnvbo)
 235{
 236	struct nouveau_drm *drm = cli->drm;
 237	struct nouveau_uvmm *uvmm = nouveau_cli_uvmm(cli);
 238	struct dma_resv *resv = NULL;
 239	struct nouveau_bo *nvbo;
 240	int ret;
 241
 242	if (domain & NOUVEAU_GEM_DOMAIN_NO_SHARE) {
 243		if (unlikely(!uvmm))
 244			return -EINVAL;
 245
 246		resv = drm_gpuvm_resv(&uvmm->base);
 247	}
 248
 249	if (!(domain & (NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART)))
 250		domain |= NOUVEAU_GEM_DOMAIN_CPU;
 251
 252	nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode,
 253				tile_flags, false);
 254	if (IS_ERR(nvbo))
 255		return PTR_ERR(nvbo);
 256
 257	nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
 258	nvbo->no_share = domain & NOUVEAU_GEM_DOMAIN_NO_SHARE;
 259
 260	/* Initialize the embedded gem-object. We return a single gem-reference
 261	 * to the caller, instead of a normal nouveau_bo ttm reference. */
 262	ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
 263	if (ret) {
 264		drm_gem_object_release(&nvbo->bo.base);
 265		kfree(nvbo);
 266		return ret;
 267	}
 268
 269	if (resv)
 270		dma_resv_lock(resv, NULL);
 271
 272	ret = nouveau_bo_init(nvbo, size, align, domain, NULL, resv);
 273
 274	if (resv)
 275		dma_resv_unlock(resv);
 276
 277	if (ret)
 278		return ret;
 279
 280	/* we restrict allowed domains on nv50+ to only the types
 281	 * that were requested at creation time.  not possibly on
 282	 * earlier chips without busting the ABI.
 283	 */
 284	nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 285			      NOUVEAU_GEM_DOMAIN_GART;
 286	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 287		nvbo->valid_domains &= domain;
 288
 289	if (nvbo->no_share) {
 290		nvbo->r_obj = drm_gpuvm_resv_obj(&uvmm->base);
 291		drm_gem_object_get(nvbo->r_obj);
 292	}
 293
 294	*pnvbo = nvbo;
 295	return 0;
 296}
 297
 298static int
 299nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 300		 struct drm_nouveau_gem_info *rep)
 301{
 302	struct nouveau_cli *cli = nouveau_cli(file_priv);
 303	struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 304	struct nouveau_vmm *vmm = nouveau_cli_vmm(cli);
 305	struct nouveau_vma *vma;
 306
 307	if (is_power_of_2(nvbo->valid_domains))
 308		rep->domain = nvbo->valid_domains;
 309	else if (nvbo->bo.resource->mem_type == TTM_PL_TT)
 310		rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 311	else
 312		rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 313	rep->offset = nvbo->offset;
 314	if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50 &&
 315	    !nouveau_cli_uvmm(cli)) {
 316		vma = nouveau_vma_find(nvbo, vmm);
 317		if (!vma)
 318			return -EINVAL;
 319
 320		rep->offset = vma->addr;
 321	} else
 322		rep->offset = 0;
 323
 324	rep->size = nvbo->bo.base.size;
 325	rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
 326	rep->tile_mode = nvbo->mode;
 327	rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
 328	if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
 329		rep->tile_flags |= nvbo->kind << 8;
 330	else
 331	if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 332		rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
 333	else
 334		rep->tile_flags |= nvbo->zeta;
 335	return 0;
 336}
 337
 338int
 339nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 340		      struct drm_file *file_priv)
 341{
 342	struct nouveau_cli *cli = nouveau_cli(file_priv);
 343	struct drm_nouveau_gem_new *req = data;
 344	struct nouveau_bo *nvbo = NULL;
 345	int ret = 0;
 346
 347	/* If uvmm wasn't initialized until now disable it completely to prevent
 348	 * userspace from mixing up UAPIs.
 349	 */
 350	nouveau_cli_disable_uvmm_noinit(cli);
 351
 352	ret = nouveau_gem_new(cli, req->info.size, req->align,
 353			      req->info.domain, req->info.tile_mode,
 354			      req->info.tile_flags, &nvbo);
 355	if (ret)
 356		return ret;
 357
 358	ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
 359				    &req->info.handle);
 360	if (ret == 0) {
 361		ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
 362		if (ret)
 363			drm_gem_handle_delete(file_priv, req->info.handle);
 364	}
 365
 366	/* drop reference from allocate - handle holds it now */
 367	drm_gem_object_put(&nvbo->bo.base);
 368	return ret;
 369}
 370
 371static int
 372nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 373		       uint32_t write_domains, uint32_t valid_domains)
 374{
 375	struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 376	struct ttm_buffer_object *bo = &nvbo->bo;
 377	uint32_t domains = valid_domains & nvbo->valid_domains &
 378		(write_domains ? write_domains : read_domains);
 379	uint32_t pref_domains = 0;
 380
 381	if (!domains)
 382		return -EINVAL;
 383
 384	valid_domains &= ~(NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART);
 385
 386	if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 387	    bo->resource->mem_type == TTM_PL_VRAM)
 388		pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 389
 390	else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 391		 bo->resource->mem_type == TTM_PL_TT)
 392		pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 393
 394	else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 395		pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM;
 396
 397	else
 398		pref_domains |= NOUVEAU_GEM_DOMAIN_GART;
 399
 400	nouveau_bo_placement_set(nvbo, pref_domains, valid_domains);
 401
 402	return 0;
 403}
 404
 405struct validate_op {
 406	struct list_head list;
 407	struct ww_acquire_ctx ticket;
 408};
 409
 410static void
 411validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
 412			struct nouveau_fence *fence,
 413			struct drm_nouveau_gem_pushbuf_bo *pbbo)
 414{
 415	struct nouveau_bo *nvbo;
 416	struct drm_nouveau_gem_pushbuf_bo *b;
 417
 418	while (!list_empty(&op->list)) {
 419		nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
 420		b = &pbbo[nvbo->pbbo_index];
 421
 422		if (likely(fence)) {
 423			nouveau_bo_fence(nvbo, fence, !!b->write_domains);
 424
 425			if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 426				struct nouveau_vma *vma =
 427					(void *)(unsigned long)b->user_priv;
 428				nouveau_fence_unref(&vma->fence);
 429				dma_fence_get(&fence->base);
 430				vma->fence = fence;
 431			}
 432		}
 433
 434		if (unlikely(nvbo->validate_mapped)) {
 435			ttm_bo_kunmap(&nvbo->kmap);
 436			nvbo->validate_mapped = false;
 437		}
 438
 439		list_del(&nvbo->entry);
 440		nvbo->reserved_by = NULL;
 441		ttm_bo_unreserve(&nvbo->bo);
 442		drm_gem_object_put(&nvbo->bo.base);
 443	}
 444}
 445
 446static void
 447validate_fini(struct validate_op *op, struct nouveau_channel *chan,
 448	      struct nouveau_fence *fence,
 449	      struct drm_nouveau_gem_pushbuf_bo *pbbo)
 450{
 451	validate_fini_no_ticket(op, chan, fence, pbbo);
 452	ww_acquire_fini(&op->ticket);
 453}
 454
 455static int
 456validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 457	      struct drm_nouveau_gem_pushbuf_bo *pbbo,
 458	      int nr_buffers, struct validate_op *op)
 459{
 460	struct nouveau_cli *cli = nouveau_cli(file_priv);
 461	int trycnt = 0;
 462	int ret = -EINVAL, i;
 463	struct nouveau_bo *res_bo = NULL;
 464	LIST_HEAD(gart_list);
 465	LIST_HEAD(vram_list);
 466	LIST_HEAD(both_list);
 467
 468	ww_acquire_init(&op->ticket, &reservation_ww_class);
 469retry:
 470	if (++trycnt > 100000) {
 471		NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 472		return -EINVAL;
 473	}
 474
 475	for (i = 0; i < nr_buffers; i++) {
 476		struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 477		struct drm_gem_object *gem;
 478		struct nouveau_bo *nvbo;
 479
 480		gem = drm_gem_object_lookup(file_priv, b->handle);
 481		if (!gem) {
 482			NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 483			ret = -ENOENT;
 484			break;
 485		}
 486		nvbo = nouveau_gem_object(gem);
 487		if (nvbo == res_bo) {
 488			res_bo = NULL;
 489			drm_gem_object_put(gem);
 490			continue;
 491		}
 492
 493		if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 494			NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 495				      "validation list\n", b->handle);
 496			drm_gem_object_put(gem);
 497			ret = -EINVAL;
 498			break;
 499		}
 500
 501		ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
 502		if (ret) {
 503			list_splice_tail_init(&vram_list, &op->list);
 504			list_splice_tail_init(&gart_list, &op->list);
 505			list_splice_tail_init(&both_list, &op->list);
 506			validate_fini_no_ticket(op, chan, NULL, NULL);
 507			if (unlikely(ret == -EDEADLK)) {
 508				ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 509							      &op->ticket);
 510				if (!ret)
 511					res_bo = nvbo;
 512			}
 513			if (unlikely(ret)) {
 514				if (ret != -ERESTARTSYS)
 515					NV_PRINTK(err, cli, "fail reserve\n");
 516				break;
 517			}
 518		}
 519
 520		if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
 521			struct nouveau_vmm *vmm = chan->vmm;
 522			struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
 523			if (!vma) {
 524				NV_PRINTK(err, cli, "vma not found!\n");
 525				ret = -EINVAL;
 526				break;
 527			}
 528
 529			b->user_priv = (uint64_t)(unsigned long)vma;
 530		} else {
 531			b->user_priv = (uint64_t)(unsigned long)nvbo;
 532		}
 533
 534		nvbo->reserved_by = file_priv;
 535		nvbo->pbbo_index = i;
 536		if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 537		    (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 538			list_add_tail(&nvbo->entry, &both_list);
 539		else
 540		if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 541			list_add_tail(&nvbo->entry, &vram_list);
 542		else
 543		if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 544			list_add_tail(&nvbo->entry, &gart_list);
 545		else {
 546			NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 547				 b->valid_domains);
 548			list_add_tail(&nvbo->entry, &both_list);
 549			ret = -EINVAL;
 550			break;
 551		}
 552		if (nvbo == res_bo)
 553			goto retry;
 554	}
 555
 556	ww_acquire_done(&op->ticket);
 557	list_splice_tail(&vram_list, &op->list);
 558	list_splice_tail(&gart_list, &op->list);
 559	list_splice_tail(&both_list, &op->list);
 560	if (ret)
 561		validate_fini(op, chan, NULL, NULL);
 562	return ret;
 563
 564}
 565
 566static int
 567validate_list(struct nouveau_channel *chan,
 568	      struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
 569{
 570	struct nouveau_cli *cli = chan->cli;
 571	struct nouveau_drm *drm = cli->drm;
 572	struct nouveau_bo *nvbo;
 573	int ret, relocs = 0;
 574
 575	list_for_each_entry(nvbo, list, entry) {
 576		struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 577
 578		ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains,
 579					     b->write_domains,
 580					     b->valid_domains);
 581		if (unlikely(ret)) {
 582			NV_PRINTK(err, cli, "fail set_domain\n");
 583			return ret;
 584		}
 585
 586		ret = nouveau_bo_validate(nvbo, true, false);
 587		if (unlikely(ret)) {
 588			if (ret != -ERESTARTSYS)
 589				NV_PRINTK(err, cli, "fail ttm_validate\n");
 590			return ret;
 591		}
 592
 593		ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 594		if (unlikely(ret)) {
 595			if (ret != -ERESTARTSYS)
 596				NV_PRINTK(err, cli, "fail post-validate sync\n");
 597			return ret;
 598		}
 599
 600		if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 601			if (nvbo->offset == b->presumed.offset &&
 602			    ((nvbo->bo.resource->mem_type == TTM_PL_VRAM &&
 603			      b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 604			     (nvbo->bo.resource->mem_type == TTM_PL_TT &&
 605			      b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 606				continue;
 607
 608			if (nvbo->bo.resource->mem_type == TTM_PL_TT)
 609				b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 610			else
 611				b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 612			b->presumed.offset = nvbo->offset;
 613			b->presumed.valid = 0;
 614			relocs++;
 615		}
 616	}
 617
 618	return relocs;
 619}
 620
 621static int
 622nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 623			     struct drm_file *file_priv,
 624			     struct drm_nouveau_gem_pushbuf_bo *pbbo,
 625			     int nr_buffers,
 626			     struct validate_op *op, bool *apply_relocs)
 627{
 628	struct nouveau_cli *cli = nouveau_cli(file_priv);
 629	int ret;
 630
 631	INIT_LIST_HEAD(&op->list);
 632
 633	if (nr_buffers == 0)
 634		return 0;
 635
 636	ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 637	if (unlikely(ret)) {
 638		if (ret != -ERESTARTSYS)
 639			NV_PRINTK(err, cli, "validate_init\n");
 640		return ret;
 641	}
 642
 643	ret = validate_list(chan, &op->list, pbbo);
 644	if (unlikely(ret < 0)) {
 645		if (ret != -ERESTARTSYS)
 646			NV_PRINTK(err, cli, "validating bo list\n");
 647		validate_fini(op, chan, NULL, NULL);
 648		return ret;
 649	} else if (ret > 0) {
 650		*apply_relocs = true;
 651	}
 652
 653	return 0;
 654}
 655
 656static int
 657nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 658				struct drm_nouveau_gem_pushbuf *req,
 659				struct drm_nouveau_gem_pushbuf_reloc *reloc,
 660				struct drm_nouveau_gem_pushbuf_bo *bo)
 661{
 662	int ret = 0;
 663	unsigned i;
 664
 665	for (i = 0; i < req->nr_relocs; i++) {
 666		struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 667		struct drm_nouveau_gem_pushbuf_bo *b;
 668		struct nouveau_bo *nvbo;
 669		uint32_t data;
 670		long lret;
 671
 672		if (unlikely(r->bo_index >= req->nr_buffers)) {
 673			NV_PRINTK(err, cli, "reloc bo index invalid\n");
 674			ret = -EINVAL;
 675			break;
 676		}
 677
 678		b = &bo[r->bo_index];
 679		if (b->presumed.valid)
 680			continue;
 681
 682		if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
 683			NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 684			ret = -EINVAL;
 685			break;
 686		}
 687		nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 688
 689		if (unlikely(r->reloc_bo_offset + 4 >
 690			     nvbo->bo.base.size)) {
 691			NV_PRINTK(err, cli, "reloc outside of bo\n");
 692			ret = -EINVAL;
 693			break;
 694		}
 695
 696		if (!nvbo->kmap.virtual) {
 697			ret = ttm_bo_kmap(&nvbo->bo, 0, PFN_UP(nvbo->bo.base.size),
 698					  &nvbo->kmap);
 699			if (ret) {
 700				NV_PRINTK(err, cli, "failed kmap for reloc\n");
 701				break;
 702			}
 703			nvbo->validate_mapped = true;
 704		}
 705
 706		if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 707			data = b->presumed.offset + r->data;
 708		else
 709		if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 710			data = (b->presumed.offset + r->data) >> 32;
 711		else
 712			data = r->data;
 713
 714		if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 715			if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 716				data |= r->tor;
 717			else
 718				data |= r->vor;
 719		}
 720
 721		lret = dma_resv_wait_timeout(nvbo->bo.base.resv,
 722					     DMA_RESV_USAGE_BOOKKEEP,
 723					     false, 15 * HZ);
 724		if (!lret)
 725			ret = -EBUSY;
 726		else if (lret > 0)
 727			ret = 0;
 728		else
 729			ret = lret;
 730
 731		if (ret) {
 732			NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n",
 733				  ret);
 734			break;
 735		}
 736
 737		nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 738	}
 739
 740	return ret;
 741}
 742
 743int
 744nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 745			  struct drm_file *file_priv)
 746{
 747	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 748	struct nouveau_cli *cli = nouveau_cli(file_priv);
 749	struct nouveau_abi16_chan *temp;
 750	struct nouveau_drm *drm = nouveau_drm(dev);
 751	struct drm_nouveau_gem_pushbuf *req = data;
 752	struct drm_nouveau_gem_pushbuf_push *push;
 753	struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 754	struct drm_nouveau_gem_pushbuf_bo *bo;
 755	struct nouveau_channel *chan = NULL;
 756	struct validate_op op;
 757	struct nouveau_fence *fence = NULL;
 758	int i, j, ret = 0;
 759	bool do_reloc = false, sync = false;
 760
 761	if (unlikely(!abi16))
 762		return -ENOMEM;
 763
 764	if (unlikely(nouveau_cli_uvmm(cli)))
 765		return nouveau_abi16_put(abi16, -ENOSYS);
 766
 767	list_for_each_entry(temp, &abi16->channels, head) {
 768		if (temp->chan->chid == req->channel) {
 769			chan = temp->chan;
 770			break;
 771		}
 772	}
 773
 774	if (!chan)
 775		return nouveau_abi16_put(abi16, -ENOENT);
 776	if (unlikely(atomic_read(&chan->killed)))
 777		return nouveau_abi16_put(abi16, -ENODEV);
 778
 779	sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
 780
 781	req->vram_available = drm->gem.vram_available;
 782	req->gart_available = drm->gem.gart_available;
 783	if (unlikely(req->nr_push == 0))
 784		goto out_next;
 785
 786	if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 787		NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 788			 req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 789		return nouveau_abi16_put(abi16, -EINVAL);
 790	}
 791
 792	if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 793		NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 794			 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 795		return nouveau_abi16_put(abi16, -EINVAL);
 796	}
 797
 798	if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 799		NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 800			 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 801		return nouveau_abi16_put(abi16, -EINVAL);
 802	}
 803
 804	push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 805	if (IS_ERR(push))
 806		return nouveau_abi16_put(abi16, PTR_ERR(push));
 807
 808	bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 809	if (IS_ERR(bo)) {
 810		u_free(push);
 811		return nouveau_abi16_put(abi16, PTR_ERR(bo));
 812	}
 813
 814	/* Ensure all push buffers are on validate list */
 815	for (i = 0; i < req->nr_push; i++) {
 816		if (push[i].bo_index >= req->nr_buffers) {
 817			NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 818			ret = -EINVAL;
 819			goto out_prevalid;
 820		}
 821	}
 822
 823	/* Validate buffer list */
 824revalidate:
 825	ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
 826					   req->nr_buffers, &op, &do_reloc);
 827	if (ret) {
 828		if (ret != -ERESTARTSYS)
 829			NV_PRINTK(err, cli, "validate: %d\n", ret);
 830		goto out_prevalid;
 831	}
 832
 833	/* Apply any relocations that are required */
 834	if (do_reloc) {
 835		if (!reloc) {
 836			validate_fini(&op, chan, NULL, bo);
 837			reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 838			if (IS_ERR(reloc)) {
 839				ret = PTR_ERR(reloc);
 840				goto out_prevalid;
 841			}
 842
 843			goto revalidate;
 844		}
 845
 846		ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
 847		if (ret) {
 848			NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 849			goto out;
 850		}
 851	}
 852
 853	if (chan->user.oclass >= NV50_CHANNEL_GPFIFO) {
 854		ret = nvif_chan_gpfifo_wait(&chan->chan, req->nr_push + 1, 16);
 855		if (ret) {
 856			NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 857			goto out;
 858		}
 859
 860		for (i = 0; i < req->nr_push; i++) {
 861			struct nouveau_vma *vma = (void *)(unsigned long)
 862				bo[push[i].bo_index].user_priv;
 863			u64 addr = vma->addr + push[i].offset;
 864			u32 length = push[i].length & ~NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
 865			bool no_prefetch = push[i].length & NOUVEAU_GEM_PUSHBUF_NO_PREFETCH;
 866
 867			nvif_chan_gpfifo_push(&chan->chan, addr, length, no_prefetch);
 868		}
 869
 870		nvif_chan_gpfifo_post(&chan->chan);
 871	} else
 872	if (drm->client.device.info.chipset >= 0x25) {
 873		ret = PUSH_WAIT(&chan->chan.push, req->nr_push * 2);
 874		if (ret) {
 875			NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 876			goto out;
 877		}
 878
 879		for (i = 0; i < req->nr_push; i++) {
 880			struct nouveau_bo *nvbo = (void *)(unsigned long)
 881				bo[push[i].bo_index].user_priv;
 882
 883			PUSH_CALL(&chan->chan.push, nvbo->offset + push[i].offset);
 884			PUSH_DATA(&chan->chan.push, 0);
 885		}
 886	} else {
 887		ret = PUSH_WAIT(&chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 888		if (ret) {
 889			NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 890			goto out;
 891		}
 892
 893		for (i = 0; i < req->nr_push; i++) {
 894			struct nouveau_bo *nvbo = (void *)(unsigned long)
 895				bo[push[i].bo_index].user_priv;
 896			uint32_t cmd;
 897
 898			cmd = chan->push.addr + ((chan->dma.cur + 2) << 2);
 899			cmd |= 0x20000000;
 900			if (unlikely(cmd != req->suffix0)) {
 901				if (!nvbo->kmap.virtual) {
 902					ret = ttm_bo_kmap(&nvbo->bo, 0,
 903							  PFN_UP(nvbo->bo.base.size),
 904							  &nvbo->kmap);
 905					if (ret) {
 906						WIND_RING(chan);
 907						goto out;
 908					}
 909					nvbo->validate_mapped = true;
 910				}
 911
 912				nouveau_bo_wr32(nvbo, (push[i].offset +
 913						push[i].length - 8) / 4, cmd);
 914			}
 915
 916			PUSH_JUMP(&chan->chan.push, nvbo->offset + push[i].offset);
 917			PUSH_DATA(&chan->chan.push, 0);
 918			for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 919				PUSH_DATA(&chan->chan.push, 0);
 920		}
 921	}
 922
 923	ret = nouveau_fence_new(&fence, chan);
 924	if (ret) {
 925		NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 926		WIND_RING(chan);
 927		goto out;
 928	}
 929
 930	if (sync) {
 931		if (!(ret = nouveau_fence_wait(fence, false, false))) {
 932			if ((ret = dma_fence_get_status(&fence->base)) == 1)
 933				ret = 0;
 934		}
 935	}
 936
 937out:
 938	validate_fini(&op, chan, fence, bo);
 939	nouveau_fence_unref(&fence);
 940
 941	if (do_reloc) {
 942		struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 943			u64_to_user_ptr(req->buffers);
 944
 945		for (i = 0; i < req->nr_buffers; i++) {
 946			if (bo[i].presumed.valid)
 947				continue;
 948
 949			if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
 950					 sizeof(bo[i].presumed))) {
 951				ret = -EFAULT;
 952				break;
 953			}
 954		}
 955	}
 956out_prevalid:
 957	if (!IS_ERR(reloc))
 958		u_free(reloc);
 959	u_free(bo);
 960	u_free(push);
 961
 962out_next:
 963	if (chan->user.oclass >= NV50_CHANNEL_GPFIFO) {
 964		req->suffix0 = 0x00000000;
 965		req->suffix1 = 0x00000000;
 966	} else
 967	if (drm->client.device.info.chipset >= 0x25) {
 968		req->suffix0 = 0x00020000;
 969		req->suffix1 = 0x00000000;
 970	} else {
 971		req->suffix0 = 0x20000000 |
 972			      (chan->push.addr + ((chan->dma.cur + 2) << 2));
 973		req->suffix1 = 0x00000000;
 974	}
 975
 976	return nouveau_abi16_put(abi16, ret);
 977}
 978
 979int
 980nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 981			   struct drm_file *file_priv)
 982{
 983	struct drm_nouveau_gem_cpu_prep *req = data;
 984	struct drm_gem_object *gem;
 985	struct nouveau_bo *nvbo;
 986	bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 987	bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 988	long lret;
 989	int ret;
 990
 991	gem = drm_gem_object_lookup(file_priv, req->handle);
 992	if (!gem)
 993		return -ENOENT;
 994	nvbo = nouveau_gem_object(gem);
 995
 996	lret = dma_resv_wait_timeout(nvbo->bo.base.resv,
 997				     dma_resv_usage_rw(write), true,
 998				     no_wait ? 0 : 30 * HZ);
 999	if (!lret)
1000		ret = -EBUSY;
1001	else if (lret > 0)
1002		ret = 0;
1003	else
1004		ret = lret;
1005
1006	nouveau_bo_sync_for_cpu(nvbo);
1007	drm_gem_object_put(gem);
1008
1009	return ret;
1010}
1011
1012int
1013nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
1014			   struct drm_file *file_priv)
1015{
1016	struct drm_nouveau_gem_cpu_fini *req = data;
1017	struct drm_gem_object *gem;
1018	struct nouveau_bo *nvbo;
1019
1020	gem = drm_gem_object_lookup(file_priv, req->handle);
1021	if (!gem)
1022		return -ENOENT;
1023	nvbo = nouveau_gem_object(gem);
1024
1025	nouveau_bo_sync_for_device(nvbo);
1026	drm_gem_object_put(gem);
1027	return 0;
1028}
1029
1030int
1031nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
1032		       struct drm_file *file_priv)
1033{
1034	struct drm_nouveau_gem_info *req = data;
1035	struct drm_gem_object *gem;
1036	int ret;
1037
1038	gem = drm_gem_object_lookup(file_priv, req->handle);
1039	if (!gem)
1040		return -ENOENT;
1041
1042	ret = nouveau_gem_info(file_priv, gem, req);
1043	drm_gem_object_put(gem);
1044	return ret;
1045}
1046