1 /* 2 * Copyright 2012 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs 23 */ 24 #include <nvif/push006c.h> 25 26 #include <nvif/class.h> 27 #include <nvif/cl0002.h> 28 #include <nvif/cl006b.h> 29 #include <nvif/cl506f.h> 30 #include <nvif/cl906f.h> 31 #include <nvif/cla06f.h> 32 #include <nvif/clc36f.h> 33 #include <nvif/ioctl.h> 34 35 #include "nouveau_drv.h" 36 #include "nouveau_dma.h" 37 #include "nouveau_bo.h" 38 #include "nouveau_chan.h" 39 #include "nouveau_fence.h" 40 #include "nouveau_abi16.h" 41 #include "nouveau_vmm.h" 42 #include "nouveau_svm.h" 43 44 MODULE_PARM_DESC(vram_pushbuf, "Create DMA push buffers in VRAM"); 45 int nouveau_vram_pushbuf; 46 module_param_named(vram_pushbuf, nouveau_vram_pushbuf, int, 0400); 47 48 static int 49 nouveau_channel_killed(struct nvif_notify *ntfy) 50 { 51 struct nouveau_channel *chan = container_of(ntfy, typeof(*chan), kill); 52 struct nouveau_cli *cli = (void *)chan->user.client; 53 NV_PRINTK(warn, cli, "channel %d killed!\n", chan->chid); 54 atomic_set(&chan->killed, 1); 55 if (chan->fence) 56 nouveau_fence_context_kill(chan->fence, -ENODEV); 57 return NVIF_NOTIFY_DROP; 58 } 59 60 int 61 nouveau_channel_idle(struct nouveau_channel *chan) 62 { 63 if (likely(chan && chan->fence && !atomic_read(&chan->killed))) { 64 struct nouveau_cli *cli = (void *)chan->user.client; 65 struct nouveau_fence *fence = NULL; 66 int ret; 67 68 ret = nouveau_fence_new(chan, false, &fence); 69 if (!ret) { 70 ret = nouveau_fence_wait(fence, false, false); 71 nouveau_fence_unref(&fence); 72 } 73 74 if (ret) { 75 NV_PRINTK(err, cli, "failed to idle channel %d [%s]\n", 76 chan->chid, nvxx_client(&cli->base)->name); 77 return ret; 78 } 79 } 80 return 0; 81 } 82 83 void 84 nouveau_channel_del(struct nouveau_channel **pchan) 85 { 86 struct nouveau_channel *chan = *pchan; 87 if (chan) { 88 struct nouveau_cli *cli = (void *)chan->user.client; 89 bool super; 90 91 if (cli) { 92 super = cli->base.super; 93 cli->base.super = true; 94 } 95 96 if (chan->fence) 97 nouveau_fence(chan->drm)->context_del(chan); 98 99 if (cli) 100 nouveau_svmm_part(chan->vmm->svmm, chan->inst); 101 102 nvif_object_dtor(&chan->nvsw); 103 nvif_object_dtor(&chan->gart); 104 nvif_object_dtor(&chan->vram); 105 nvif_notify_dtor(&chan->kill); 106 nvif_object_dtor(&chan->user); 107 nvif_object_dtor(&chan->push.ctxdma); 108 nouveau_vma_del(&chan->push.vma); 109 nouveau_bo_unmap(chan->push.buffer); 110 if (chan->push.buffer && chan->push.buffer->pin_refcnt) 111 nouveau_bo_unpin(chan->push.buffer); 112 nouveau_bo_ref(NULL, &chan->push.buffer); 113 kfree(chan); 114 115 if (cli) 116 cli->base.super = super; 117 } 118 *pchan = NULL; 119 } 120 121 static void 122 nouveau_channel_kick(struct nvif_push *push) 123 { 124 struct nouveau_channel *chan = container_of(push, typeof(*chan), chan._push); 125 chan->dma.cur = chan->dma.cur + (chan->chan._push.cur - chan->chan._push.bgn); 126 FIRE_RING(chan); 127 chan->chan._push.bgn = chan->chan._push.cur; 128 } 129 130 static int 131 nouveau_channel_wait(struct nvif_push *push, u32 size) 132 { 133 struct nouveau_channel *chan = container_of(push, typeof(*chan), chan._push); 134 int ret; 135 chan->dma.cur = chan->dma.cur + (chan->chan._push.cur - chan->chan._push.bgn); 136 ret = RING_SPACE(chan, size); 137 if (ret == 0) { 138 chan->chan._push.bgn = chan->chan._push.mem.object.map.ptr; 139 chan->chan._push.bgn = chan->chan._push.bgn + chan->dma.cur; 140 chan->chan._push.cur = chan->chan._push.bgn; 141 chan->chan._push.end = chan->chan._push.bgn + size; 142 } 143 return ret; 144 } 145 146 static int 147 nouveau_channel_prep(struct nouveau_drm *drm, struct nvif_device *device, 148 u32 size, struct nouveau_channel **pchan) 149 { 150 struct nouveau_cli *cli = (void *)device->object.client; 151 struct nv_dma_v0 args = {}; 152 struct nouveau_channel *chan; 153 u32 target; 154 int ret; 155 156 chan = *pchan = kzalloc(sizeof(*chan), GFP_KERNEL); 157 if (!chan) 158 return -ENOMEM; 159 160 chan->device = device; 161 chan->drm = drm; 162 chan->vmm = cli->svm.cli ? &cli->svm : &cli->vmm; 163 atomic_set(&chan->killed, 0); 164 165 /* allocate memory for dma push buffer */ 166 target = TTM_PL_FLAG_TT | TTM_PL_FLAG_UNCACHED; 167 if (nouveau_vram_pushbuf) 168 target = TTM_PL_FLAG_VRAM; 169 170 ret = nouveau_bo_new(cli, size, 0, target, 0, 0, NULL, NULL, 171 &chan->push.buffer); 172 if (ret == 0) { 173 ret = nouveau_bo_pin(chan->push.buffer, target, false); 174 if (ret == 0) 175 ret = nouveau_bo_map(chan->push.buffer); 176 } 177 178 if (ret) { 179 nouveau_channel_del(pchan); 180 return ret; 181 } 182 183 chan->chan._push.mem.object.parent = cli->base.object.parent; 184 chan->chan._push.mem.object.client = &cli->base; 185 chan->chan._push.mem.object.name = "chanPush"; 186 chan->chan._push.mem.object.map.ptr = chan->push.buffer->kmap.virtual; 187 chan->chan._push.wait = nouveau_channel_wait; 188 chan->chan._push.kick = nouveau_channel_kick; 189 chan->chan.push = &chan->chan._push; 190 191 /* create dma object covering the *entire* memory space that the 192 * pushbuf lives in, this is because the GEM code requires that 193 * we be able to call out to other (indirect) push buffers 194 */ 195 chan->push.addr = chan->push.buffer->offset; 196 197 if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) { 198 ret = nouveau_vma_new(chan->push.buffer, chan->vmm, 199 &chan->push.vma); 200 if (ret) { 201 nouveau_channel_del(pchan); 202 return ret; 203 } 204 205 chan->push.addr = chan->push.vma->addr; 206 207 if (device->info.family >= NV_DEVICE_INFO_V0_FERMI) 208 return 0; 209 210 args.target = NV_DMA_V0_TARGET_VM; 211 args.access = NV_DMA_V0_ACCESS_VM; 212 args.start = 0; 213 args.limit = chan->vmm->vmm.limit - 1; 214 } else 215 if (chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM) { 216 if (device->info.family == NV_DEVICE_INFO_V0_TNT) { 217 /* nv04 vram pushbuf hack, retarget to its location in 218 * the framebuffer bar rather than direct vram access.. 219 * nfi why this exists, it came from the -nv ddx. 220 */ 221 args.target = NV_DMA_V0_TARGET_PCI; 222 args.access = NV_DMA_V0_ACCESS_RDWR; 223 args.start = nvxx_device(device)->func-> 224 resource_addr(nvxx_device(device), 1); 225 args.limit = args.start + device->info.ram_user - 1; 226 } else { 227 args.target = NV_DMA_V0_TARGET_VRAM; 228 args.access = NV_DMA_V0_ACCESS_RDWR; 229 args.start = 0; 230 args.limit = device->info.ram_user - 1; 231 } 232 } else { 233 if (chan->drm->agp.bridge) { 234 args.target = NV_DMA_V0_TARGET_AGP; 235 args.access = NV_DMA_V0_ACCESS_RDWR; 236 args.start = chan->drm->agp.base; 237 args.limit = chan->drm->agp.base + 238 chan->drm->agp.size - 1; 239 } else { 240 args.target = NV_DMA_V0_TARGET_VM; 241 args.access = NV_DMA_V0_ACCESS_RDWR; 242 args.start = 0; 243 args.limit = chan->vmm->vmm.limit - 1; 244 } 245 } 246 247 ret = nvif_object_ctor(&device->object, "abi16PushCtxDma", 0, 248 NV_DMA_FROM_MEMORY, &args, sizeof(args), 249 &chan->push.ctxdma); 250 if (ret) { 251 nouveau_channel_del(pchan); 252 return ret; 253 } 254 255 return 0; 256 } 257 258 static int 259 nouveau_channel_ind(struct nouveau_drm *drm, struct nvif_device *device, 260 u64 runlist, bool priv, struct nouveau_channel **pchan) 261 { 262 static const u16 oclasses[] = { TURING_CHANNEL_GPFIFO_A, 263 VOLTA_CHANNEL_GPFIFO_A, 264 PASCAL_CHANNEL_GPFIFO_A, 265 MAXWELL_CHANNEL_GPFIFO_A, 266 KEPLER_CHANNEL_GPFIFO_B, 267 KEPLER_CHANNEL_GPFIFO_A, 268 FERMI_CHANNEL_GPFIFO, 269 G82_CHANNEL_GPFIFO, 270 NV50_CHANNEL_GPFIFO, 271 0 }; 272 const u16 *oclass = oclasses; 273 union { 274 struct nv50_channel_gpfifo_v0 nv50; 275 struct fermi_channel_gpfifo_v0 fermi; 276 struct kepler_channel_gpfifo_a_v0 kepler; 277 struct volta_channel_gpfifo_a_v0 volta; 278 } args; 279 struct nouveau_channel *chan; 280 u32 size; 281 int ret; 282 283 /* allocate dma push buffer */ 284 ret = nouveau_channel_prep(drm, device, 0x12000, &chan); 285 *pchan = chan; 286 if (ret) 287 return ret; 288 289 /* create channel object */ 290 do { 291 if (oclass[0] >= VOLTA_CHANNEL_GPFIFO_A) { 292 args.volta.version = 0; 293 args.volta.ilength = 0x02000; 294 args.volta.ioffset = 0x10000 + chan->push.addr; 295 args.volta.runlist = runlist; 296 args.volta.vmm = nvif_handle(&chan->vmm->vmm.object); 297 args.volta.priv = priv; 298 size = sizeof(args.volta); 299 } else 300 if (oclass[0] >= KEPLER_CHANNEL_GPFIFO_A) { 301 args.kepler.version = 0; 302 args.kepler.ilength = 0x02000; 303 args.kepler.ioffset = 0x10000 + chan->push.addr; 304 args.kepler.runlist = runlist; 305 args.kepler.vmm = nvif_handle(&chan->vmm->vmm.object); 306 args.kepler.priv = priv; 307 size = sizeof(args.kepler); 308 } else 309 if (oclass[0] >= FERMI_CHANNEL_GPFIFO) { 310 args.fermi.version = 0; 311 args.fermi.ilength = 0x02000; 312 args.fermi.ioffset = 0x10000 + chan->push.addr; 313 args.fermi.vmm = nvif_handle(&chan->vmm->vmm.object); 314 size = sizeof(args.fermi); 315 } else { 316 args.nv50.version = 0; 317 args.nv50.ilength = 0x02000; 318 args.nv50.ioffset = 0x10000 + chan->push.addr; 319 args.nv50.pushbuf = nvif_handle(&chan->push.ctxdma); 320 args.nv50.vmm = nvif_handle(&chan->vmm->vmm.object); 321 size = sizeof(args.nv50); 322 } 323 324 ret = nvif_object_ctor(&device->object, "abi16ChanUser", 0, 325 *oclass++, &args, size, &chan->user); 326 if (ret == 0) { 327 if (chan->user.oclass >= VOLTA_CHANNEL_GPFIFO_A) { 328 chan->chid = args.volta.chid; 329 chan->inst = args.volta.inst; 330 chan->token = args.volta.token; 331 } else 332 if (chan->user.oclass >= KEPLER_CHANNEL_GPFIFO_A) { 333 chan->chid = args.kepler.chid; 334 chan->inst = args.kepler.inst; 335 } else 336 if (chan->user.oclass >= FERMI_CHANNEL_GPFIFO) { 337 chan->chid = args.fermi.chid; 338 } else { 339 chan->chid = args.nv50.chid; 340 } 341 return ret; 342 } 343 } while (*oclass); 344 345 nouveau_channel_del(pchan); 346 return ret; 347 } 348 349 static int 350 nouveau_channel_dma(struct nouveau_drm *drm, struct nvif_device *device, 351 struct nouveau_channel **pchan) 352 { 353 static const u16 oclasses[] = { NV40_CHANNEL_DMA, 354 NV17_CHANNEL_DMA, 355 NV10_CHANNEL_DMA, 356 NV03_CHANNEL_DMA, 357 0 }; 358 const u16 *oclass = oclasses; 359 struct nv03_channel_dma_v0 args; 360 struct nouveau_channel *chan; 361 int ret; 362 363 /* allocate dma push buffer */ 364 ret = nouveau_channel_prep(drm, device, 0x10000, &chan); 365 *pchan = chan; 366 if (ret) 367 return ret; 368 369 /* create channel object */ 370 args.version = 0; 371 args.pushbuf = nvif_handle(&chan->push.ctxdma); 372 args.offset = chan->push.addr; 373 374 do { 375 ret = nvif_object_ctor(&device->object, "abi16ChanUser", 0, 376 *oclass++, &args, sizeof(args), 377 &chan->user); 378 if (ret == 0) { 379 chan->chid = args.chid; 380 return ret; 381 } 382 } while (ret && *oclass); 383 384 nouveau_channel_del(pchan); 385 return ret; 386 } 387 388 static int 389 nouveau_channel_init(struct nouveau_channel *chan, u32 vram, u32 gart) 390 { 391 struct nvif_device *device = chan->device; 392 struct nouveau_drm *drm = chan->drm; 393 struct nv_dma_v0 args = {}; 394 int ret, i; 395 396 nvif_object_map(&chan->user, NULL, 0); 397 398 if (chan->user.oclass >= FERMI_CHANNEL_GPFIFO) { 399 ret = nvif_notify_ctor(&chan->user, "abi16ChanKilled", 400 nouveau_channel_killed, 401 true, NV906F_V0_NTFY_KILLED, 402 NULL, 0, 0, &chan->kill); 403 if (ret == 0) 404 ret = nvif_notify_get(&chan->kill); 405 if (ret) { 406 NV_ERROR(drm, "Failed to request channel kill " 407 "notification: %d\n", ret); 408 return ret; 409 } 410 } 411 412 /* allocate dma objects to cover all allowed vram, and gart */ 413 if (device->info.family < NV_DEVICE_INFO_V0_FERMI) { 414 if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) { 415 args.target = NV_DMA_V0_TARGET_VM; 416 args.access = NV_DMA_V0_ACCESS_VM; 417 args.start = 0; 418 args.limit = chan->vmm->vmm.limit - 1; 419 } else { 420 args.target = NV_DMA_V0_TARGET_VRAM; 421 args.access = NV_DMA_V0_ACCESS_RDWR; 422 args.start = 0; 423 args.limit = device->info.ram_user - 1; 424 } 425 426 ret = nvif_object_ctor(&chan->user, "abi16ChanVramCtxDma", vram, 427 NV_DMA_IN_MEMORY, &args, sizeof(args), 428 &chan->vram); 429 if (ret) 430 return ret; 431 432 if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) { 433 args.target = NV_DMA_V0_TARGET_VM; 434 args.access = NV_DMA_V0_ACCESS_VM; 435 args.start = 0; 436 args.limit = chan->vmm->vmm.limit - 1; 437 } else 438 if (chan->drm->agp.bridge) { 439 args.target = NV_DMA_V0_TARGET_AGP; 440 args.access = NV_DMA_V0_ACCESS_RDWR; 441 args.start = chan->drm->agp.base; 442 args.limit = chan->drm->agp.base + 443 chan->drm->agp.size - 1; 444 } else { 445 args.target = NV_DMA_V0_TARGET_VM; 446 args.access = NV_DMA_V0_ACCESS_RDWR; 447 args.start = 0; 448 args.limit = chan->vmm->vmm.limit - 1; 449 } 450 451 ret = nvif_object_ctor(&chan->user, "abi16ChanGartCtxDma", gart, 452 NV_DMA_IN_MEMORY, &args, sizeof(args), 453 &chan->gart); 454 if (ret) 455 return ret; 456 } 457 458 /* initialise dma tracking parameters */ 459 switch (chan->user.oclass & 0x00ff) { 460 case 0x006b: 461 case 0x006e: 462 chan->user_put = 0x40; 463 chan->user_get = 0x44; 464 chan->dma.max = (0x10000 / 4) - 2; 465 break; 466 default: 467 chan->user_put = 0x40; 468 chan->user_get = 0x44; 469 chan->user_get_hi = 0x60; 470 chan->dma.ib_base = 0x10000 / 4; 471 chan->dma.ib_max = (0x02000 / 8) - 1; 472 chan->dma.ib_put = 0; 473 chan->dma.ib_free = chan->dma.ib_max - chan->dma.ib_put; 474 chan->dma.max = chan->dma.ib_base; 475 break; 476 } 477 478 chan->dma.put = 0; 479 chan->dma.cur = chan->dma.put; 480 chan->dma.free = chan->dma.max - chan->dma.cur; 481 482 ret = PUSH_WAIT(chan->chan.push, NOUVEAU_DMA_SKIPS); 483 if (ret) 484 return ret; 485 486 for (i = 0; i < NOUVEAU_DMA_SKIPS; i++) 487 PUSH_DATA(chan->chan.push, 0x00000000); 488 489 /* allocate software object class (used for fences on <= nv05) */ 490 if (device->info.family < NV_DEVICE_INFO_V0_CELSIUS) { 491 ret = nvif_object_ctor(&chan->user, "abi16NvswFence", 0x006e, 492 NVIF_CLASS_SW_NV04, 493 NULL, 0, &chan->nvsw); 494 if (ret) 495 return ret; 496 497 ret = PUSH_WAIT(chan->chan.push, 2); 498 if (ret) 499 return ret; 500 501 PUSH_NVSQ(chan->chan.push, NV_SW, 0x0000, chan->nvsw.handle); 502 PUSH_KICK(chan->chan.push); 503 } 504 505 /* initialise synchronisation */ 506 return nouveau_fence(chan->drm)->context_new(chan); 507 } 508 509 int 510 nouveau_channel_new(struct nouveau_drm *drm, struct nvif_device *device, 511 u32 arg0, u32 arg1, bool priv, 512 struct nouveau_channel **pchan) 513 { 514 struct nouveau_cli *cli = (void *)device->object.client; 515 bool super; 516 int ret; 517 518 /* hack until fencenv50 is fixed, and agp access relaxed */ 519 super = cli->base.super; 520 cli->base.super = true; 521 522 ret = nouveau_channel_ind(drm, device, arg0, priv, pchan); 523 if (ret) { 524 NV_PRINTK(dbg, cli, "ib channel create, %d\n", ret); 525 ret = nouveau_channel_dma(drm, device, pchan); 526 if (ret) { 527 NV_PRINTK(dbg, cli, "dma channel create, %d\n", ret); 528 goto done; 529 } 530 } 531 532 ret = nouveau_channel_init(*pchan, arg0, arg1); 533 if (ret) { 534 NV_PRINTK(err, cli, "channel failed to initialise, %d\n", ret); 535 nouveau_channel_del(pchan); 536 } 537 538 ret = nouveau_svmm_join((*pchan)->vmm->svmm, (*pchan)->inst); 539 if (ret) 540 nouveau_channel_del(pchan); 541 542 done: 543 cli->base.super = super; 544 return ret; 545 } 546 547 int 548 nouveau_channels_init(struct nouveau_drm *drm) 549 { 550 struct { 551 struct nv_device_info_v1 m; 552 struct { 553 struct nv_device_info_v1_data channels; 554 } v; 555 } args = { 556 .m.version = 1, 557 .m.count = sizeof(args.v) / sizeof(args.v.channels), 558 .v.channels.mthd = NV_DEVICE_FIFO_CHANNELS, 559 }; 560 struct nvif_object *device = &drm->client.device.object; 561 int ret; 562 563 ret = nvif_object_mthd(device, NV_DEVICE_V0_INFO, &args, sizeof(args)); 564 if (ret || args.v.channels.mthd == NV_DEVICE_INFO_INVALID) 565 return -ENODEV; 566 567 drm->chan.nr = args.v.channels.data; 568 drm->chan.context_base = dma_fence_context_alloc(drm->chan.nr); 569 return 0; 570 } 571