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 <core/object.h>
  25 #include <core/client.h>
  26 #include <core/device.h>
  27 #include <core/class.h>
  28 #include <core/mm.h>
  29
  30 #include <subdev/fb.h>
  31 #include <subdev/timer.h>
  32 #include <subdev/instmem.h>
  33
  34 #include "nouveau_drm.h"
  35 #include "nouveau_dma.h"
  36 #include "nouveau_gem.h"
  37 #include "nouveau_chan.h"
  38 #include "nouveau_abi16.h"
  39
  40 struct nouveau_abi16 *
  41 nouveau_abi16_get(struct drm_file *file_priv, struct drm_device *dev)
  42 {
  43         struct nouveau_cli *cli = nouveau_cli(file_priv);
  44         mutex_lock(&cli->mutex);
  45         if (!cli->abi16) {
  46                 struct nouveau_abi16 *abi16;
  47                 cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
  48                 if (cli->abi16) {
  49                         INIT_LIST_HEAD(&abi16->channels);
  50                         abi16->client = nv_object(cli);
  51
  52                         /* allocate device object targeting client's default
  53                          * device (ie. the one that belongs to the fd it
  54                          * opened)
  55                          */
  56                         if (nouveau_object_new(abi16->client, NVDRM_CLIENT,
  57                                                NVDRM_DEVICE, 0x0080,
  58                                                &(struct nv_device_class) {
  59                                                 .device = ~0ULL,
  60                                                },
  61                                                sizeof(struct nv_device_class),
  62                                                &abi16->device) == 0)
  63                                 return cli->abi16;
  64
  65                         kfree(cli->abi16);
  66                         cli->abi16 = NULL;
  67                 }
  68
  69                 mutex_unlock(&cli->mutex);
  70         }
  71         return cli->abi16;
  72 }
  73
  74 int
  75 nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
  76 {
  77         struct nouveau_cli *cli = (void *)abi16->client;
  78         mutex_unlock(&cli->mutex);
  79         return ret;
  80 }
  81
  82 u16
  83 nouveau_abi16_swclass(struct nouveau_drm *drm)
  84 {
  85         switch (nv_device(drm->device)->card_type) {
  86         case NV_04:
  87                 return 0x006e;
  88         case NV_10:
  89         case NV_20:
  90         case NV_30:
  91         case NV_40:
  92                 return 0x016e;
  93         case NV_50:
  94                 return 0x506e;
  95         case NV_C0:
  96         case NV_D0:
  97         case NV_E0:
  98                 return 0x906e;
  99         }
 100
 101         return 0x0000;
 102 }
 103
 104 static void
 105 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
 106                         struct nouveau_abi16_ntfy *ntfy)
 107 {
 108         nouveau_mm_free(&chan->heap, &ntfy->node);
 109         list_del(&ntfy->head);
 110         kfree(ntfy);
 111 }
 112
 113 static void
 114 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
 115                         struct nouveau_abi16_chan *chan)
 116 {
 117         struct nouveau_abi16_ntfy *ntfy, *temp;
 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                 drm_gem_object_unreference_unlocked(chan->ntfy->gem);
 127         }
 128
 129         if (chan->heap.block_size)
 130                 nouveau_mm_fini(&chan->heap);
 131
 132         /* destroy channel object, all children will be killed too */
 133         if (chan->chan) {
 134                 abi16->handles &= ~(1 << (chan->chan->handle & 0xffff));
 135                 nouveau_channel_del(&chan->chan);
 136         }
 137
 138         list_del(&chan->head);
 139         kfree(chan);
 140 }
 141
 142 void
 143 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 144 {
 145         struct nouveau_cli *cli = (void *)abi16->client;
 146         struct nouveau_abi16_chan *chan, *temp;
 147
 148         /* cleanup channels */
 149         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 150                 nouveau_abi16_chan_fini(abi16, chan);
 151         }
 152
 153         /* destroy the device object */
 154         nouveau_object_del(abi16->client, NVDRM_CLIENT, NVDRM_DEVICE);
 155
 156         kfree(cli->abi16);
 157         cli->abi16 = NULL;
 158 }
 159
 160 int
 161 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 162 {
 163         struct nouveau_drm *drm = nouveau_drm(dev);
 164         struct nouveau_device *device = nv_device(drm->device);
 165         struct nouveau_timer *ptimer = nouveau_timer(device);
 166         struct drm_nouveau_getparam *getparam = data;
 167
 168         switch (getparam->param) {
 169         case NOUVEAU_GETPARAM_CHIPSET_ID:
 170                 getparam->value = device->chipset;
 171                 break;
 172         case NOUVEAU_GETPARAM_PCI_VENDOR:
 173                 getparam->value = dev->pci_vendor;
 174                 break;
 175         case NOUVEAU_GETPARAM_PCI_DEVICE:
 176                 getparam->value = dev->pci_device;
 177                 break;
 178         case NOUVEAU_GETPARAM_BUS_TYPE:
 179                 if (drm_pci_device_is_agp(dev))
 180                         getparam->value = 0;
 181                 else
 182                 if (!pci_is_pcie(dev->pdev))
 183                         getparam->value = 1;
 184                 else
 185                         getparam->value = 2;
 186                 break;
 187         case NOUVEAU_GETPARAM_FB_SIZE:
 188                 getparam->value = drm->gem.vram_available;
 189                 break;
 190         case NOUVEAU_GETPARAM_AGP_SIZE:
 191                 getparam->value = drm->gem.gart_available;
 192                 break;
 193         case NOUVEAU_GETPARAM_VM_VRAM_BASE:
 194                 getparam->value = 0; /* deprecated */
 195                 break;
 196         case NOUVEAU_GETPARAM_PTIMER_TIME:
 197                 getparam->value = ptimer->read(ptimer);
 198                 break;
 199         case NOUVEAU_GETPARAM_HAS_BO_USAGE:
 200                 getparam->value = 1;
 201                 break;
 202         case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
 203                 getparam->value = 1;
 204                 break;
 205         case NOUVEAU_GETPARAM_GRAPH_UNITS:
 206                 /* NV40 and NV50 versions are quite different, but register
 207                  * address is the same. User is supposed to know the card
 208                  * family anyway... */
 209                 if (device->chipset >= 0x40) {
 210                         getparam->value = nv_rd32(device, 0x001540);
 211                         break;
 212                 }
 213                 /* FALLTHRU */
 214         default:
 215                 nv_debug(device, "unknown parameter %lld\n", getparam->param);
 216                 return -EINVAL;
 217         }
 218
 219         return 0;
 220 }
 221
 222 int
 223 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
 224 {
 225         return -EINVAL;
 226 }
 227
 228 int
 229 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 230 {
 231         struct drm_nouveau_channel_alloc *init = data;
 232         struct nouveau_cli *cli = nouveau_cli(file_priv);
 233         struct nouveau_drm *drm = nouveau_drm(dev);
 234         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 235         struct nouveau_abi16_chan *chan;
 236         struct nouveau_client *client;
 237         struct nouveau_device *device;
 238         struct nouveau_instmem *imem;
 239         struct nouveau_fb *pfb;
 240         int ret;
 241
 242         if (unlikely(!abi16))
 243                 return -ENOMEM;
 244
 245         if (!drm->channel)
 246                 return nouveau_abi16_put(abi16, -ENODEV);
 247
 248         client = nv_client(abi16->client);
 249         device = nv_device(abi16->device);
 250         imem   = nouveau_instmem(device);
 251         pfb    = nouveau_fb(device);
 252
 253         /* hack to allow channel engine type specification on kepler */
 254         if (device->card_type >= NV_E0) {
 255                 if (init->fb_ctxdma_handle != ~0)
 256                         init->fb_ctxdma_handle = NVE0_CHANNEL_IND_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 == NVE0_CHANNEL_IND_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 = ffsll(~abi16->handles);
 271         if (!init->channel--)
 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 |= (1 << init->channel);
 281
 282         /* create channel object and initialise dma and fence management */
 283         ret = nouveau_channel_new(drm, cli, NVDRM_DEVICE, NVDRM_CHAN |
 284                                   init->channel, init->fb_ctxdma_handle,
 285                                   init->tt_ctxdma_handle, &chan->chan);
 286         if (ret)
 287                 goto done;
 288
 289         if (device->card_type >= NV_50)
 290                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 291                                         NOUVEAU_GEM_DOMAIN_GART;
 292         else
 293         if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
 294                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
 295         else
 296                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
 297
 298         if (device->card_type < NV_C0) {
 299                 init->subchan[0].handle = 0x00000000;
 300                 init->subchan[0].grclass = 0x0000;
 301                 init->subchan[1].handle = NvSw;
 302                 init->subchan[1].grclass = 0x506e;
 303                 init->nr_subchan = 2;
 304         }
 305
 306         /* Named memory object area */
 307         ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
 308                               0, 0, &chan->ntfy);
 309         if (ret == 0)
 310                 ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT);
 311         if (ret)
 312                 goto done;
 313
 314         if (device->card_type >= NV_50) {
 315                 ret = nouveau_bo_vma_add(chan->ntfy, client->vm,
 316                                         &chan->ntfy_vma);
 317                 if (ret)
 318                         goto done;
 319         }
 320
 321         ret = drm_gem_handle_create(file_priv, chan->ntfy->gem,
 322                                     &init->notifier_handle);
 323         if (ret)
 324                 goto done;
 325
 326         ret = nouveau_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
 327 done:
 328         if (ret)
 329                 nouveau_abi16_chan_fini(abi16, chan);
 330         return nouveau_abi16_put(abi16, ret);
 331 }
 332
 333
 334 int
 335 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
 336 {
 337         struct drm_nouveau_channel_free *req = data;
 338         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 339         struct nouveau_abi16_chan *chan;
 340         int ret = -ENOENT;
 341
 342         if (unlikely(!abi16))
 343                 return -ENOMEM;
 344
 345         list_for_each_entry(chan, &abi16->channels, head) {
 346                 if (chan->chan->handle == (NVDRM_CHAN | req->channel)) {
 347                         nouveau_abi16_chan_fini(abi16, chan);
 348                         return nouveau_abi16_put(abi16, 0);
 349                 }
 350         }
 351
 352         return nouveau_abi16_put(abi16, ret);
 353 }
 354
 355 int
 356 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
 357 {
 358         struct drm_nouveau_grobj_alloc *init = data;
 359         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 360         struct nouveau_drm *drm = nouveau_drm(dev);
 361         struct nouveau_object *object;
 362         int ret;
 363
 364         if (unlikely(!abi16))
 365                 return -ENOMEM;
 366
 367         if (init->handle == ~0)
 368                 return nouveau_abi16_put(abi16, -EINVAL);
 369
 370         /* compatibility with userspace that assumes 506e for all chipsets */
 371         if (init->class == 0x506e) {
 372                 init->class = nouveau_abi16_swclass(drm);
 373                 if (init->class == 0x906e)
 374                         return nouveau_abi16_put(abi16, 0);
 375         }
 376
 377         ret = nouveau_object_new(abi16->client, NVDRM_CHAN | init->channel,
 378                                   init->handle, init->class, NULL, 0, &object);
 379         return nouveau_abi16_put(abi16, ret);
 380 }
 381
 382 int
 383 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 384 {
 385         struct drm_nouveau_notifierobj_alloc *info = data;
 386         struct nouveau_drm *drm = nouveau_drm(dev);
 387         struct nouveau_device *device = nv_device(drm->device);
 388         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 389         struct nouveau_abi16_chan *chan, *temp;
 390         struct nouveau_abi16_ntfy *ntfy;
 391         struct nouveau_object *object;
 392         struct nv_dma_class args = {};
 393         int ret;
 394
 395         if (unlikely(!abi16))
 396                 return -ENOMEM;
 397
 398         /* completely unnecessary for these chipsets... */
 399         if (unlikely(nv_device(abi16->device)->card_type >= NV_C0))
 400                 return nouveau_abi16_put(abi16, -EINVAL);
 401
 402         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 403                 if (chan->chan->handle == (NVDRM_CHAN | info->channel))
 404                         break;
 405                 chan = NULL;
 406         }
 407
 408         if (!chan)
 409                 return nouveau_abi16_put(abi16, -ENOENT);
 410
 411         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 412         if (!ntfy)
 413                 return nouveau_abi16_put(abi16, -ENOMEM);
 414
 415         list_add(&ntfy->head, &chan->notifiers);
 416         ntfy->handle = info->handle;
 417
 418         ret = nouveau_mm_head(&chan->heap, 1, info->size, info->size, 1,
 419                               &ntfy->node);
 420         if (ret)
 421                 goto done;
 422
 423         args.start = ntfy->node->offset;
 424         args.limit = ntfy->node->offset + ntfy->node->length - 1;
 425         if (device->card_type >= NV_50) {
 426                 args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM;
 427                 args.start += chan->ntfy_vma.offset;
 428                 args.limit += chan->ntfy_vma.offset;
 429         } else
 430         if (drm->agp.stat == ENABLED) {
 431                 args.flags  = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR;
 432                 args.start += drm->agp.base + chan->ntfy->bo.offset;
 433                 args.limit += drm->agp.base + chan->ntfy->bo.offset;
 434         } else {
 435                 args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR;
 436                 args.start += chan->ntfy->bo.offset;
 437                 args.limit += chan->ntfy->bo.offset;
 438         }
 439
 440         ret = nouveau_object_new(abi16->client, chan->chan->handle,
 441                                  ntfy->handle, 0x003d, &args,
 442                                  sizeof(args), &object);
 443         if (ret)
 444                 goto done;
 445
 446 done:
 447         if (ret)
 448                 nouveau_abi16_ntfy_fini(chan, ntfy);
 449         return nouveau_abi16_put(abi16, ret);
 450 }
 451
 452 int
 453 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
 454 {
 455         struct drm_nouveau_gpuobj_free *fini = data;
 456         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 457         struct nouveau_abi16_chan *chan, *temp;
 458         struct nouveau_abi16_ntfy *ntfy;
 459         int ret;
 460
 461         if (unlikely(!abi16))
 462                 return -ENOMEM;
 463
 464         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 465                 if (chan->chan->handle == (NVDRM_CHAN | fini->channel))
 466                         break;
 467                 chan = NULL;
 468         }
 469
 470         if (!chan)
 471                 return nouveau_abi16_put(abi16, -ENOENT);
 472
 473         /* synchronize with the user channel and destroy the gpu object */
 474         nouveau_channel_idle(chan->chan);
 475
 476         ret = nouveau_object_del(abi16->client, chan->chan->handle, fini->handle);
 477         if (ret)
 478                 return nouveau_abi16_put(abi16, ret);
 479
 480         /* cleanup extra state if this object was a notifier */
 481         list_for_each_entry(ntfy, &chan->notifiers, head) {
 482                 if (ntfy->handle == fini->handle) {
 483                         nouveau_mm_free(&chan->heap, &ntfy->node);
 484                         list_del(&ntfy->head);
 485                         break;
 486                 }
 487         }
 488
 489         return nouveau_abi16_put(abi16, 0);
 490 }