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.object,
  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 *)abi16->device.object.client;
  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         nvif_object_fini(&ntfy->object);
 104         nvkm_mm_free(&chan->heap, &ntfy->node);
 105         list_del(&ntfy->head);
 106         kfree(ntfy);
 107 }
 108
 109 static void
 110 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
 111                         struct nouveau_abi16_chan *chan)
 112 {
 113         struct nouveau_abi16_ntfy *ntfy, *temp;
 114
 115         /* wait for all activity to stop before releasing notify object, which
 116          * may be still in use */
 117         if (chan->chan && chan->ntfy)
 118                 nouveau_channel_idle(chan->chan);
 119
 120         /* cleanup notifier state */
 121         list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
 122                 nouveau_abi16_ntfy_fini(chan, ntfy);
 123         }
 124
 125         if (chan->ntfy) {
 126                 nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
 127                 nouveau_bo_unpin(chan->ntfy);
 128                 drm_gem_object_unreference_unlocked(&chan->ntfy->gem);
 129         }
 130
 131         if (chan->heap.block_size)
 132                 nvkm_mm_fini(&chan->heap);
 133
 134         /* destroy channel object, all children will be killed too */
 135         if (chan->chan) {
 136                 abi16->handles &= ~(1ULL << (chan->chan->user.handle & 0xffff));
 137                 nouveau_channel_del(&chan->chan);
 138         }
 139
 140         list_del(&chan->head);
 141         kfree(chan);
 142 }
 143
 144 void
 145 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 146 {
 147         struct nouveau_cli *cli = (void *)abi16->device.object.client;
 148         struct nouveau_abi16_chan *chan, *temp;
 149
 150         /* cleanup channels */
 151         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 152                 nouveau_abi16_chan_fini(abi16, chan);
 153         }
 154
 155         /* destroy the device object */
 156         nvif_device_fini(&abi16->device);
 157
 158         kfree(cli->abi16);
 159         cli->abi16 = NULL;
 160 }
 161
 162 int
 163 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 164 {
 165         struct nouveau_cli *cli = nouveau_cli(file_priv);
 166         struct nouveau_drm *drm = nouveau_drm(dev);
 167         struct nvif_device *device = &drm->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 = nvif_device_time(device);
 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(dbg, 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->user.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 nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 369         struct nouveau_abi16_chan *chan;
 370         struct nouveau_abi16_ntfy *ntfy;
 371         struct nouveau_drm *drm = nouveau_drm(dev);
 372         struct nvif_client *client;
 373         int ret;
 374
 375         if (unlikely(!abi16))
 376                 return -ENOMEM;
 377
 378         if (init->handle == ~0)
 379                 return nouveau_abi16_put(abi16, -EINVAL);
 380         client = abi16->device.object.client;
 381
 382         /* compatibility with userspace that assumes 506e for all chipsets */
 383         if (init->class == 0x506e) {
 384                 init->class = nouveau_abi16_swclass(drm);
 385                 if (init->class == 0x906e)
 386                         return nouveau_abi16_put(abi16, 0);
 387         }
 388
 389         chan = nouveau_abi16_chan(abi16, init->channel);
 390         if (!chan)
 391                 return nouveau_abi16_put(abi16, -ENOENT);
 392
 393         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 394         if (!ntfy)
 395                 return nouveau_abi16_put(abi16, -ENOMEM);
 396
 397         list_add(&ntfy->head, &chan->notifiers);
 398
 399         client->route = NVDRM_OBJECT_ABI16;
 400         ret = nvif_object_init(&chan->chan->user, init->handle, init->class,
 401                                NULL, 0, &ntfy->object);
 402         client->route = NVDRM_OBJECT_NVIF;
 403
 404         if (ret)
 405                 nouveau_abi16_ntfy_fini(chan, ntfy);
 406         return nouveau_abi16_put(abi16, ret);
 407 }
 408
 409 int
 410 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 411 {
 412         struct drm_nouveau_notifierobj_alloc *info = data;
 413         struct nouveau_drm *drm = nouveau_drm(dev);
 414         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 415         struct nouveau_abi16_chan *chan;
 416         struct nouveau_abi16_ntfy *ntfy;
 417         struct nvif_device *device = &abi16->device;
 418         struct nvif_client *client;
 419         struct nv_dma_v0 args = {};
 420         int ret;
 421
 422         if (unlikely(!abi16))
 423                 return -ENOMEM;
 424
 425         /* completely unnecessary for these chipsets... */
 426         if (unlikely(device->info.family >= NV_DEVICE_INFO_V0_FERMI))
 427                 return nouveau_abi16_put(abi16, -EINVAL);
 428         client = abi16->device.object.client;
 429
 430         chan = nouveau_abi16_chan(abi16, info->channel);
 431         if (!chan)
 432                 return nouveau_abi16_put(abi16, -ENOENT);
 433
 434         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 435         if (!ntfy)
 436                 return nouveau_abi16_put(abi16, -ENOMEM);
 437
 438         list_add(&ntfy->head, &chan->notifiers);
 439
 440         ret = nvkm_mm_head(&chan->heap, 0, 1, info->size, info->size, 1,
 441                            &ntfy->node);
 442         if (ret)
 443                 goto done;
 444
 445         args.start = ntfy->node->offset;
 446         args.limit = ntfy->node->offset + ntfy->node->length - 1;
 447         if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
 448                 args.target = NV_DMA_V0_TARGET_VM;
 449                 args.access = NV_DMA_V0_ACCESS_VM;
 450                 args.start += chan->ntfy_vma.offset;
 451                 args.limit += chan->ntfy_vma.offset;
 452         } else
 453         if (drm->agp.stat == ENABLED) {
 454                 args.target = NV_DMA_V0_TARGET_AGP;
 455                 args.access = NV_DMA_V0_ACCESS_RDWR;
 456                 args.start += drm->agp.base + chan->ntfy->bo.offset;
 457                 args.limit += drm->agp.base + chan->ntfy->bo.offset;
 458         } else {
 459                 args.target = NV_DMA_V0_TARGET_VM;
 460                 args.access = NV_DMA_V0_ACCESS_RDWR;
 461                 args.start += chan->ntfy->bo.offset;
 462                 args.limit += chan->ntfy->bo.offset;
 463         }
 464
 465         client->route = NVDRM_OBJECT_ABI16;
 466         client->super = true;
 467         ret = nvif_object_init(&chan->chan->user, info->handle,
 468                                NV_DMA_IN_MEMORY, &args, sizeof(args),
 469                                &ntfy->object);
 470         client->super = false;
 471         client->route = NVDRM_OBJECT_NVIF;
 472         if (ret)
 473                 goto done;
 474
 475         info->offset = ntfy->node->offset;
 476 done:
 477         if (ret)
 478                 nouveau_abi16_ntfy_fini(chan, ntfy);
 479         return nouveau_abi16_put(abi16, ret);
 480 }
 481
 482 int
 483 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
 484 {
 485         struct drm_nouveau_gpuobj_free *fini = data;
 486         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 487         struct nouveau_abi16_chan *chan;
 488         struct nouveau_abi16_ntfy *ntfy;
 489         int ret = -ENOENT;
 490
 491         if (unlikely(!abi16))
 492                 return -ENOMEM;
 493
 494         chan = nouveau_abi16_chan(abi16, fini->channel);
 495         if (!chan)
 496                 return nouveau_abi16_put(abi16, -EINVAL);
 497
 498         /* synchronize with the user channel and destroy the gpu object */
 499         nouveau_channel_idle(chan->chan);
 500
 501         list_for_each_entry(ntfy, &chan->notifiers, head) {
 502                 if (ntfy->object.handle == fini->handle) {
 503                         nouveau_abi16_ntfy_fini(chan, ntfy);
 504                         ret = 0;
 505                         break;
 506                 }
 507         }
 508
 509         return nouveau_abi16_put(abi16, ret);
 510 }