kernel/drivers/gpu/drm/nouveau/nouveau_abi16.c

   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  */
  23
  24 #include <nvif/client.h>
  25 #include <nvif/driver.h>
  26 #include <nvif/ioctl.h>
  27 #include <nvif/class.h>
  28
  29 #include "nouveau_drm.h"
  30 #include "nouveau_dma.h"
  31 #include "nouveau_gem.h"
  32 #include "nouveau_chan.h"
  33 #include "nouveau_abi16.h"
  34
  35 struct nouveau_abi16 *
  36 nouveau_abi16_get(struct drm_file *file_priv, struct drm_device *dev)
  37 {
  38         struct nouveau_cli *cli = nouveau_cli(file_priv);
  39         mutex_lock(&cli->mutex);
  40         if (!cli->abi16) {
  41                 struct nouveau_abi16 *abi16;
  42                 cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
  43                 if (cli->abi16) {
  44                         struct nv_device_v0 args = {
  45                                 .device = ~0ULL,
  46                         };
  47
  48                         INIT_LIST_HEAD(&abi16->channels);
  49
  50                         /* allocate device object targeting client's default
  51                          * device (ie. the one that belongs to the fd it
  52                          * opened)
  53                          */
  54                         if (nvif_device_init(&cli->base.base, NULL,
  55                                              NOUVEAU_ABI16_DEVICE, NV_DEVICE,
  56                                              &args, sizeof(args),
  57                                              &abi16->device) == 0)
  58                                 return cli->abi16;
  59
  60                         kfree(cli->abi16);
  61                         cli->abi16 = NULL;
  62                 }
  63
  64                 mutex_unlock(&cli->mutex);
  65         }
  66         return cli->abi16;
  67 }
  68
  69 int
  70 nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
  71 {
  72         struct nouveau_cli *cli = (void *)nvif_client(&abi16->device.base);
  73         mutex_unlock(&cli->mutex);
  74         return ret;
  75 }
  76
  77 u16
  78 nouveau_abi16_swclass(struct nouveau_drm *drm)
  79 {
  80         switch (drm->device.info.family) {
  81         case NV_DEVICE_INFO_V0_TNT:
  82                 return 0x006e;
  83         case NV_DEVICE_INFO_V0_CELSIUS:
  84         case NV_DEVICE_INFO_V0_KELVIN:
  85         case NV_DEVICE_INFO_V0_RANKINE:
  86         case NV_DEVICE_INFO_V0_CURIE:
  87                 return 0x016e;
  88         case NV_DEVICE_INFO_V0_TESLA:
  89                 return 0x506e;
  90         case NV_DEVICE_INFO_V0_FERMI:
  91         case NV_DEVICE_INFO_V0_KEPLER:
  92         case NV_DEVICE_INFO_V0_MAXWELL:
  93                 return 0x906e;
  94         }
  95
  96         return 0x0000;
  97 }
  98
  99 static void
 100 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
 101                         struct nouveau_abi16_ntfy *ntfy)
 102 {
 103         nvkm_mm_free(&chan->heap, &ntfy->node);
 104         list_del(&ntfy->head);
 105         kfree(ntfy);
 106 }
 107
 108 static void
 109 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
 110                         struct nouveau_abi16_chan *chan)
 111 {
 112         struct nouveau_abi16_ntfy *ntfy, *temp;
 113
 114         /* wait for all activity to stop before releasing notify object, which
 115          * may be still in use */
 116         if (chan->chan && chan->ntfy)
 117                 nouveau_channel_idle(chan->chan);
 118
 119         /* cleanup notifier state */
 120         list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
 121                 nouveau_abi16_ntfy_fini(chan, ntfy);
 122         }
 123
 124         if (chan->ntfy) {
 125                 nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
 126                 nouveau_bo_unpin(chan->ntfy);
 127                 drm_gem_object_unreference_unlocked(&chan->ntfy->gem);
 128         }
 129
 130         if (chan->heap.block_size)
 131                 nvkm_mm_fini(&chan->heap);
 132
 133         /* destroy channel object, all children will be killed too */
 134         if (chan->chan) {
 135                 abi16->handles &= ~(1ULL << (chan->chan->object->handle & 0xffff));
 136                 nouveau_channel_del(&chan->chan);
 137         }
 138
 139         list_del(&chan->head);
 140         kfree(chan);
 141 }
 142
 143 void
 144 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 145 {
 146         struct nouveau_cli *cli = (void *)nvif_client(&abi16->device.base);
 147         struct nouveau_abi16_chan *chan, *temp;
 148
 149         /* cleanup channels */
 150         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 151                 nouveau_abi16_chan_fini(abi16, chan);
 152         }
 153
 154         /* destroy the device object */
 155         nvif_device_fini(&abi16->device);
 156
 157         kfree(cli->abi16);
 158         cli->abi16 = NULL;
 159 }
 160
 161 int
 162 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 163 {
 164         struct nouveau_cli *cli = nouveau_cli(file_priv);
 165         struct nouveau_drm *drm = nouveau_drm(dev);
 166         struct nvif_device *device = &drm->device;
 167         struct nvkm_timer *ptimer = nvxx_timer(device);
 168         struct nvkm_gr *gr = nvxx_gr(device);
 169         struct drm_nouveau_getparam *getparam = data;
 170
 171         switch (getparam->param) {
 172         case NOUVEAU_GETPARAM_CHIPSET_ID:
 173                 getparam->value = device->info.chipset;
 174                 break;
 175         case NOUVEAU_GETPARAM_PCI_VENDOR:
 176                 if (nv_device_is_pci(nvxx_device(device)))
 177                         getparam->value = dev->pdev->vendor;
 178                 else
 179                         getparam->value = 0;
 180                 break;
 181         case NOUVEAU_GETPARAM_PCI_DEVICE:
 182                 if (nv_device_is_pci(nvxx_device(device)))
 183                         getparam->value = dev->pdev->device;
 184                 else
 185                         getparam->value = 0;
 186                 break;
 187         case NOUVEAU_GETPARAM_BUS_TYPE:
 188                 if (!nv_device_is_pci(nvxx_device(device)))
 189                         getparam->value = 3;
 190                 else
 191                 if (drm_pci_device_is_agp(dev))
 192                         getparam->value = 0;
 193                 else
 194                 if (!pci_is_pcie(dev->pdev))
 195                         getparam->value = 1;
 196                 else
 197                         getparam->value = 2;
 198                 break;
 199         case NOUVEAU_GETPARAM_FB_SIZE:
 200                 getparam->value = drm->gem.vram_available;
 201                 break;
 202         case NOUVEAU_GETPARAM_AGP_SIZE:
 203                 getparam->value = drm->gem.gart_available;
 204                 break;
 205         case NOUVEAU_GETPARAM_VM_VRAM_BASE:
 206                 getparam->value = 0; /* deprecated */
 207                 break;
 208         case NOUVEAU_GETPARAM_PTIMER_TIME:
 209                 getparam->value = ptimer->read(ptimer);
 210                 break;
 211         case NOUVEAU_GETPARAM_HAS_BO_USAGE:
 212                 getparam->value = 1;
 213                 break;
 214         case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
 215                 getparam->value = 1;
 216                 break;
 217         case NOUVEAU_GETPARAM_GRAPH_UNITS:
 218                 getparam->value = gr->units ? gr->units(gr) : 0;
 219                 break;
 220         default:
 221                 NV_PRINTK(debug, cli, "unknown parameter %lld\n", getparam->param);
 222                 return -EINVAL;
 223         }
 224
 225         return 0;
 226 }
 227
 228 int
 229 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
 230 {
 231         return -EINVAL;
 232 }
 233
 234 int
 235 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 236 {
 237         struct drm_nouveau_channel_alloc *init = data;
 238         struct nouveau_cli *cli = nouveau_cli(file_priv);
 239         struct nouveau_drm *drm = nouveau_drm(dev);
 240         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 241         struct nouveau_abi16_chan *chan;
 242         struct nvif_device *device;
 243         int ret;
 244
 245         if (unlikely(!abi16))
 246                 return -ENOMEM;
 247
 248         if (!drm->channel)
 249                 return nouveau_abi16_put(abi16, -ENODEV);
 250
 251         device = &abi16->device;
 252
 253         /* hack to allow channel engine type specification on kepler */
 254         if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
 255                 if (init->fb_ctxdma_handle != ~0)
 256                         init->fb_ctxdma_handle = KEPLER_CHANNEL_GPFIFO_A_V0_ENGINE_GR;
 257                 else
 258                         init->fb_ctxdma_handle = init->tt_ctxdma_handle;
 259
 260                 /* allow flips to be executed if this is a graphics channel */
 261                 init->tt_ctxdma_handle = 0;
 262                 if (init->fb_ctxdma_handle == KEPLER_CHANNEL_GPFIFO_A_V0_ENGINE_GR)
 263                         init->tt_ctxdma_handle = 1;
 264         }
 265
 266         if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
 267                 return nouveau_abi16_put(abi16, -EINVAL);
 268
 269         /* allocate "abi16 channel" data and make up a handle for it */
 270         init->channel = __ffs64(~abi16->handles);
 271         if (~abi16->handles == 0)
 272                 return nouveau_abi16_put(abi16, -ENOSPC);
 273
 274         chan = kzalloc(sizeof(*chan), GFP_KERNEL);
 275         if (!chan)
 276                 return nouveau_abi16_put(abi16, -ENOMEM);
 277
 278         INIT_LIST_HEAD(&chan->notifiers);
 279         list_add(&chan->head, &abi16->channels);
 280         abi16->handles |= (1ULL << init->channel);
 281
 282         /* create channel object and initialise dma and fence management */
 283         ret = nouveau_channel_new(drm, device,
 284                                   NOUVEAU_ABI16_CHAN(init->channel),
 285                                   init->fb_ctxdma_handle,
 286                                   init->tt_ctxdma_handle, &chan->chan);
 287         if (ret)
 288                 goto done;
 289
 290         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA)
 291                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 292                                         NOUVEAU_GEM_DOMAIN_GART;
 293         else
 294         if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
 295                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
 296         else
 297                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
 298
 299         if (device->info.family < NV_DEVICE_INFO_V0_CELSIUS) {
 300                 init->subchan[0].handle = 0x00000000;
 301                 init->subchan[0].grclass = 0x0000;
 302                 init->subchan[1].handle = chan->chan->nvsw.handle;
 303                 init->subchan[1].grclass = 0x506e;
 304                 init->nr_subchan = 2;
 305         }
 306
 307         /* Named memory object area */
 308         ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
 309                               0, 0, &chan->ntfy);
 310         if (ret == 0)
 311                 ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT, false);
 312         if (ret)
 313                 goto done;
 314
 315         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
 316                 ret = nouveau_bo_vma_add(chan->ntfy, cli->vm,
 317                                         &chan->ntfy_vma);
 318                 if (ret)
 319                         goto done;
 320         }
 321
 322         ret = drm_gem_handle_create(file_priv, &chan->ntfy->gem,
 323                                     &init->notifier_handle);
 324         if (ret)
 325                 goto done;
 326
 327         ret = nvkm_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
 328 done:
 329         if (ret)
 330                 nouveau_abi16_chan_fini(abi16, chan);
 331         return nouveau_abi16_put(abi16, ret);
 332 }
 333
 334 static struct nouveau_abi16_chan *
 335 nouveau_abi16_chan(struct nouveau_abi16 *abi16, int channel)
 336 {
 337         struct nouveau_abi16_chan *chan;
 338
 339         list_for_each_entry(chan, &abi16->channels, head) {
 340                 if (chan->chan->object->handle == NOUVEAU_ABI16_CHAN(channel))
 341                         return chan;
 342         }
 343
 344         return NULL;
 345 }
 346
 347 int
 348 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
 349 {
 350         struct drm_nouveau_channel_free *req = data;
 351         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 352         struct nouveau_abi16_chan *chan;
 353
 354         if (unlikely(!abi16))
 355                 return -ENOMEM;
 356
 357         chan = nouveau_abi16_chan(abi16, req->channel);
 358         if (!chan)
 359                 return nouveau_abi16_put(abi16, -ENOENT);
 360         nouveau_abi16_chan_fini(abi16, chan);
 361         return nouveau_abi16_put(abi16, 0);
 362 }
 363
 364 int
 365 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
 366 {
 367         struct drm_nouveau_grobj_alloc *init = data;
 368         struct {
 369                 struct nvif_ioctl_v0 ioctl;
 370                 struct nvif_ioctl_new_v0 new;
 371         } args = {
 372                 .ioctl.owner = NVIF_IOCTL_V0_OWNER_ANY,
 373                 .ioctl.type = NVIF_IOCTL_V0_NEW,
 374                 .ioctl.path_nr = 3,
 375                 .ioctl.path[2] = NOUVEAU_ABI16_CLIENT,
 376                 .ioctl.path[1] = NOUVEAU_ABI16_DEVICE,
 377                 .ioctl.path[0] = NOUVEAU_ABI16_CHAN(init->channel),
 378                 .new.route = NVDRM_OBJECT_ABI16,
 379                 .new.handle = init->handle,
 380                 .new.oclass = init->class,
 381         };
 382         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 383         struct nouveau_drm *drm = nouveau_drm(dev);
 384         struct nvif_client *client;
 385         int ret;
 386
 387         if (unlikely(!abi16))
 388                 return -ENOMEM;
 389
 390         if (init->handle == ~0)
 391                 return nouveau_abi16_put(abi16, -EINVAL);
 392         client = nvif_client(nvif_object(&abi16->device));
 393
 394         /* compatibility with userspace that assumes 506e for all chipsets */
 395         if (init->class == 0x506e) {
 396                 init->class = nouveau_abi16_swclass(drm);
 397                 if (init->class == 0x906e)
 398                         return nouveau_abi16_put(abi16, 0);
 399         }
 400
 401         ret = nvif_client_ioctl(client, &args, sizeof(args));
 402         return nouveau_abi16_put(abi16, ret);
 403 }
 404
 405 int
 406 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 407 {
 408         struct drm_nouveau_notifierobj_alloc *info = data;
 409         struct {
 410                 struct nvif_ioctl_v0 ioctl;
 411                 struct nvif_ioctl_new_v0 new;
 412                 struct nv_dma_v0 ctxdma;
 413         } args = {
 414                 .ioctl.owner = NVIF_IOCTL_V0_OWNER_ANY,
 415                 .ioctl.type = NVIF_IOCTL_V0_NEW,
 416                 .ioctl.path_nr = 3,
 417                 .ioctl.path[2] = NOUVEAU_ABI16_CLIENT,
 418                 .ioctl.path[1] = NOUVEAU_ABI16_DEVICE,
 419                 .ioctl.path[0] = NOUVEAU_ABI16_CHAN(info->channel),
 420                 .new.route = NVDRM_OBJECT_ABI16,
 421                 .new.handle = info->handle,
 422                 .new.oclass = NV_DMA_IN_MEMORY,
 423         };
 424         struct nouveau_drm *drm = nouveau_drm(dev);
 425         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 426         struct nouveau_abi16_chan *chan;
 427         struct nouveau_abi16_ntfy *ntfy;
 428         struct nvif_device *device = &abi16->device;
 429         struct nvif_client *client;
 430         int ret;
 431
 432         if (unlikely(!abi16))
 433                 return -ENOMEM;
 434
 435         /* completely unnecessary for these chipsets... */
 436         if (unlikely(device->info.family >= NV_DEVICE_INFO_V0_FERMI))
 437                 return nouveau_abi16_put(abi16, -EINVAL);
 438         client = nvif_client(nvif_object(&abi16->device));
 439
 440         chan = nouveau_abi16_chan(abi16, info->channel);
 441         if (!chan)
 442                 return nouveau_abi16_put(abi16, -ENOENT);
 443
 444         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 445         if (!ntfy)
 446                 return nouveau_abi16_put(abi16, -ENOMEM);
 447
 448         list_add(&ntfy->head, &chan->notifiers);
 449         ntfy->handle = info->handle;
 450
 451         ret = nvkm_mm_head(&chan->heap, 0, 1, info->size, info->size, 1,
 452                            &ntfy->node);
 453         if (ret)
 454                 goto done;
 455
 456         args.ctxdma.start = ntfy->node->offset;
 457         args.ctxdma.limit = ntfy->node->offset + ntfy->node->length - 1;
 458         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
 459                 args.ctxdma.target = NV_DMA_V0_TARGET_VM;
 460                 args.ctxdma.access = NV_DMA_V0_ACCESS_VM;
 461                 args.ctxdma.start += chan->ntfy_vma.offset;
 462                 args.ctxdma.limit += chan->ntfy_vma.offset;
 463         } else
 464         if (drm->agp.stat == ENABLED) {
 465                 args.ctxdma.target = NV_DMA_V0_TARGET_AGP;
 466                 args.ctxdma.access = NV_DMA_V0_ACCESS_RDWR;
 467                 args.ctxdma.start += drm->agp.base + chan->ntfy->bo.offset;
 468                 args.ctxdma.limit += drm->agp.base + chan->ntfy->bo.offset;
 469                 client->super = true;
 470         } else {
 471                 args.ctxdma.target = NV_DMA_V0_TARGET_VM;
 472                 args.ctxdma.access = NV_DMA_V0_ACCESS_RDWR;
 473                 args.ctxdma.start += chan->ntfy->bo.offset;
 474                 args.ctxdma.limit += chan->ntfy->bo.offset;
 475         }
 476
 477         ret = nvif_client_ioctl(client, &args, sizeof(args));
 478         client->super = false;
 479         if (ret)
 480                 goto done;
 481
 482         info->offset = ntfy->node->offset;
 483
 484 done:
 485         if (ret)
 486                 nouveau_abi16_ntfy_fini(chan, ntfy);
 487         return nouveau_abi16_put(abi16, ret);
 488 }
 489
 490 int
 491 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
 492 {
 493         struct drm_nouveau_gpuobj_free *fini = data;
 494         struct {
 495                 struct nvif_ioctl_v0 ioctl;
 496                 struct nvif_ioctl_del del;
 497         } args = {
 498                 .ioctl.owner = NVDRM_OBJECT_ABI16,
 499                 .ioctl.type = NVIF_IOCTL_V0_DEL,
 500                 .ioctl.path_nr = 4,
 501                 .ioctl.path[3] = NOUVEAU_ABI16_CLIENT,
 502                 .ioctl.path[2] = NOUVEAU_ABI16_DEVICE,
 503                 .ioctl.path[1] = NOUVEAU_ABI16_CHAN(fini->channel),
 504                 .ioctl.path[0] = fini->handle,
 505         };
 506         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 507         struct nouveau_abi16_chan *chan;
 508         struct nouveau_abi16_ntfy *ntfy;
 509         struct nvif_client *client;
 510         int ret;
 511
 512         if (unlikely(!abi16))
 513                 return -ENOMEM;
 514
 515         chan = nouveau_abi16_chan(abi16, fini->channel);
 516         if (!chan)
 517                 return nouveau_abi16_put(abi16, -ENOENT);
 518         client = nvif_client(nvif_object(&abi16->device));
 519
 520         /* synchronize with the user channel and destroy the gpu object */
 521         nouveau_channel_idle(chan->chan);
 522
 523         ret = nvif_client_ioctl(client, &args, sizeof(args));
 524         if (ret)
 525                 return nouveau_abi16_put(abi16, ret);
 526
 527         /* cleanup extra state if this object was a notifier */
 528         list_for_each_entry(ntfy, &chan->notifiers, head) {
 529                 if (ntfy->handle == fini->handle) {
 530                         nvkm_mm_free(&chan->heap, &ntfy->node);
 531                         list_del(&ntfy->head);
 532                         break;
 533                 }
 534         }
 535
 536         return nouveau_abi16_put(abi16, 0);
 537 }