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 #include <engine/graph.h>
  34
  35 #include "nouveau_drm.h"
  36 #include "nouveau_dma.h"
  37 #include "nouveau_gem.h"
  38 #include "nouveau_chan.h"
  39 #include "nouveau_abi16.h"
  40
  41 struct nouveau_abi16 *
  42 nouveau_abi16_get(struct drm_file *file_priv, struct drm_device *dev)
  43 {
  44         struct nouveau_cli *cli = nouveau_cli(file_priv);
  45         mutex_lock(&cli->mutex);
  46         if (!cli->abi16) {
  47                 struct nouveau_abi16 *abi16;
  48                 cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
  49                 if (cli->abi16) {
  50                         INIT_LIST_HEAD(&abi16->channels);
  51                         abi16->client = nv_object(cli);
  52
  53                         /* allocate device object targeting client's default
  54                          * device (ie. the one that belongs to the fd it
  55                          * opened)
  56                          */
  57                         if (nouveau_object_new(abi16->client, NVDRM_CLIENT,
  58                                                NVDRM_DEVICE, 0x0080,
  59                                                &(struct nv_device_class) {
  60                                                 .device = ~0ULL,
  61                                                },
  62                                                sizeof(struct nv_device_class),
  63                                                &abi16->device) == 0)
  64                                 return cli->abi16;
  65
  66                         kfree(cli->abi16);
  67                         cli->abi16 = NULL;
  68                 }
  69
  70                 mutex_unlock(&cli->mutex);
  71         }
  72         return cli->abi16;
  73 }
  74
  75 int
  76 nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
  77 {
  78         struct nouveau_cli *cli = (void *)abi16->client;
  79         mutex_unlock(&cli->mutex);
  80         return ret;
  81 }
  82
  83 u16
  84 nouveau_abi16_swclass(struct nouveau_drm *drm)
  85 {
  86         switch (nv_device(drm->device)->card_type) {
  87         case NV_04:
  88                 return 0x006e;
  89         case NV_10:
  90         case NV_11:
  91         case NV_20:
  92         case NV_30:
  93         case NV_40:
  94                 return 0x016e;
  95         case NV_50:
  96                 return 0x506e;
  97         case NV_C0:
  98         case NV_D0:
  99         case NV_E0:
 100                 return 0x906e;
 101         }
 102
 103         return 0x0000;
 104 }
 105
 106 static void
 107 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
 108                         struct nouveau_abi16_ntfy *ntfy)
 109 {
 110         nouveau_mm_free(&chan->heap, &ntfy->node);
 111         list_del(&ntfy->head);
 112         kfree(ntfy);
 113 }
 114
 115 static void
 116 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
 117                         struct nouveau_abi16_chan *chan)
 118 {
 119         struct nouveau_abi16_ntfy *ntfy, *temp;
 120
 121         /* wait for all activity to stop before releasing notify object, which
 122          * may be still in use */
 123         if (chan->chan && chan->ntfy)
 124                 nouveau_channel_idle(chan->chan);
 125
 126         /* cleanup notifier state */
 127         list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
 128                 nouveau_abi16_ntfy_fini(chan, ntfy);
 129         }
 130
 131         if (chan->ntfy) {
 132                 nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
 133                 nouveau_bo_unpin(chan->ntfy);
 134                 drm_gem_object_unreference_unlocked(&chan->ntfy->gem);
 135         }
 136
 137         if (chan->heap.block_size)
 138                 nouveau_mm_fini(&chan->heap);
 139
 140         /* destroy channel object, all children will be killed too */
 141         if (chan->chan) {
 142                 abi16->handles &= ~(1 << (chan->chan->handle & 0xffff));
 143                 nouveau_channel_del(&chan->chan);
 144         }
 145
 146         list_del(&chan->head);
 147         kfree(chan);
 148 }
 149
 150 void
 151 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 152 {
 153         struct nouveau_cli *cli = (void *)abi16->client;
 154         struct nouveau_abi16_chan *chan, *temp;
 155
 156         /* cleanup channels */
 157         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 158                 nouveau_abi16_chan_fini(abi16, chan);
 159         }
 160
 161         /* destroy the device object */
 162         nouveau_object_del(abi16->client, NVDRM_CLIENT, NVDRM_DEVICE);
 163
 164         kfree(cli->abi16);
 165         cli->abi16 = NULL;
 166 }
 167
 168 int
 169 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 170 {
 171         struct nouveau_drm *drm = nouveau_drm(dev);
 172         struct nouveau_device *device = nv_device(drm->device);
 173         struct nouveau_timer *ptimer = nouveau_timer(device);
 174         struct nouveau_graph *graph = (void *)nouveau_engine(device, NVDEV_ENGINE_GR);
 175         struct drm_nouveau_getparam *getparam = data;
 176
 177         switch (getparam->param) {
 178         case NOUVEAU_GETPARAM_CHIPSET_ID:
 179                 getparam->value = device->chipset;
 180                 break;
 181         case NOUVEAU_GETPARAM_PCI_VENDOR:
 182                 getparam->value = dev->pdev->vendor;
 183                 break;
 184         case NOUVEAU_GETPARAM_PCI_DEVICE:
 185                 getparam->value = dev->pdev->device;
 186                 break;
 187         case NOUVEAU_GETPARAM_BUS_TYPE:
 188                 if (drm_pci_device_is_agp(dev))
 189                         getparam->value = 0;
 190                 else
 191                 if (!pci_is_pcie(dev->pdev))
 192                         getparam->value = 1;
 193                 else
 194                         getparam->value = 2;
 195                 break;
 196         case NOUVEAU_GETPARAM_FB_SIZE:
 197                 getparam->value = drm->gem.vram_available;
 198                 break;
 199         case NOUVEAU_GETPARAM_AGP_SIZE:
 200                 getparam->value = drm->gem.gart_available;
 201                 break;
 202         case NOUVEAU_GETPARAM_VM_VRAM_BASE:
 203                 getparam->value = 0; /* deprecated */
 204                 break;
 205         case NOUVEAU_GETPARAM_PTIMER_TIME:
 206                 getparam->value = ptimer->read(ptimer);
 207                 break;
 208         case NOUVEAU_GETPARAM_HAS_BO_USAGE:
 209                 getparam->value = 1;
 210                 break;
 211         case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
 212                 getparam->value = 1;
 213                 break;
 214         case NOUVEAU_GETPARAM_GRAPH_UNITS:
 215                 getparam->value = graph->units ? graph->units(graph) : 0;
 216                 break;
 217         default:
 218                 nv_debug(device, "unknown parameter %lld\n", getparam->param);
 219                 return -EINVAL;
 220         }
 221
 222         return 0;
 223 }
 224
 225 int
 226 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
 227 {
 228         return -EINVAL;
 229 }
 230
 231 int
 232 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 233 {
 234         struct drm_nouveau_channel_alloc *init = data;
 235         struct nouveau_cli *cli = nouveau_cli(file_priv);
 236         struct nouveau_drm *drm = nouveau_drm(dev);
 237         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 238         struct nouveau_abi16_chan *chan;
 239         struct nouveau_client *client;
 240         struct nouveau_device *device;
 241         struct nouveau_instmem *imem;
 242         struct nouveau_fb *pfb;
 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         client = nv_client(abi16->client);
 252         device = nv_device(abi16->device);
 253         imem   = nouveau_instmem(device);
 254         pfb    = nouveau_fb(device);
 255
 256         /* hack to allow channel engine type specification on kepler */
 257         if (device->card_type >= NV_E0) {
 258                 if (init->fb_ctxdma_handle != ~0)
 259                         init->fb_ctxdma_handle = NVE0_CHANNEL_IND_ENGINE_GR;
 260                 else
 261                         init->fb_ctxdma_handle = init->tt_ctxdma_handle;
 262
 263                 /* allow flips to be executed if this is a graphics channel */
 264                 init->tt_ctxdma_handle = 0;
 265                 if (init->fb_ctxdma_handle == NVE0_CHANNEL_IND_ENGINE_GR)
 266                         init->tt_ctxdma_handle = 1;
 267         }
 268
 269         if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
 270                 return nouveau_abi16_put(abi16, -EINVAL);
 271
 272         /* allocate "abi16 channel" data and make up a handle for it */
 273         init->channel = ffsll(~abi16->handles);
 274         if (!init->channel--)
 275                 return nouveau_abi16_put(abi16, -ENOSPC);
 276
 277         chan = kzalloc(sizeof(*chan), GFP_KERNEL);
 278         if (!chan)
 279                 return nouveau_abi16_put(abi16, -ENOMEM);
 280
 281         INIT_LIST_HEAD(&chan->notifiers);
 282         list_add(&chan->head, &abi16->channels);
 283         abi16->handles |= (1 << init->channel);
 284
 285         /* create channel object and initialise dma and fence management */
 286         ret = nouveau_channel_new(drm, cli, NVDRM_DEVICE, NVDRM_CHAN |
 287                                   init->channel, init->fb_ctxdma_handle,
 288                                   init->tt_ctxdma_handle, &chan->chan);
 289         if (ret)
 290                 goto done;
 291
 292         if (device->card_type >= NV_50)
 293                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 294                                         NOUVEAU_GEM_DOMAIN_GART;
 295         else
 296         if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
 297                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
 298         else
 299                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
 300
 301         if (device->card_type < NV_10) {
 302                 init->subchan[0].handle = 0x00000000;
 303                 init->subchan[0].grclass = 0x0000;
 304                 init->subchan[1].handle = NvSw;
 305                 init->subchan[1].grclass = 0x506e;
 306                 init->nr_subchan = 2;
 307         }
 308
 309         /* Named memory object area */
 310         ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
 311                               0, 0, &chan->ntfy);
 312         if (ret == 0)
 313                 ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT);
 314         if (ret)
 315                 goto done;
 316
 317         if (device->card_type >= NV_50) {
 318                 ret = nouveau_bo_vma_add(chan->ntfy, client->vm,
 319                                         &chan->ntfy_vma);
 320                 if (ret)
 321                         goto done;
 322         }
 323
 324         ret = drm_gem_handle_create(file_priv, &chan->ntfy->gem,
 325                                     &init->notifier_handle);
 326         if (ret)
 327                 goto done;
 328
 329         ret = nouveau_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
 330 done:
 331         if (ret)
 332                 nouveau_abi16_chan_fini(abi16, chan);
 333         return nouveau_abi16_put(abi16, ret);
 334 }
 335
 336
 337 int
 338 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
 339 {
 340         struct drm_nouveau_channel_free *req = data;
 341         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 342         struct nouveau_abi16_chan *chan;
 343         int ret = -ENOENT;
 344
 345         if (unlikely(!abi16))
 346                 return -ENOMEM;
 347
 348         list_for_each_entry(chan, &abi16->channels, head) {
 349                 if (chan->chan->handle == (NVDRM_CHAN | req->channel)) {
 350                         nouveau_abi16_chan_fini(abi16, chan);
 351                         return nouveau_abi16_put(abi16, 0);
 352                 }
 353         }
 354
 355         return nouveau_abi16_put(abi16, ret);
 356 }
 357
 358 int
 359 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
 360 {
 361         struct drm_nouveau_grobj_alloc *init = data;
 362         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 363         struct nouveau_drm *drm = nouveau_drm(dev);
 364         struct nouveau_object *object;
 365         int ret;
 366
 367         if (unlikely(!abi16))
 368                 return -ENOMEM;
 369
 370         if (init->handle == ~0)
 371                 return nouveau_abi16_put(abi16, -EINVAL);
 372
 373         /* compatibility with userspace that assumes 506e for all chipsets */
 374         if (init->class == 0x506e) {
 375                 init->class = nouveau_abi16_swclass(drm);
 376                 if (init->class == 0x906e)
 377                         return nouveau_abi16_put(abi16, 0);
 378         }
 379
 380         ret = nouveau_object_new(abi16->client, NVDRM_CHAN | init->channel,
 381                                   init->handle, init->class, NULL, 0, &object);
 382         return nouveau_abi16_put(abi16, ret);
 383 }
 384
 385 int
 386 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 387 {
 388         struct drm_nouveau_notifierobj_alloc *info = data;
 389         struct nouveau_drm *drm = nouveau_drm(dev);
 390         struct nouveau_device *device = nv_device(drm->device);
 391         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 392         struct nouveau_abi16_chan *chan = NULL, *temp;
 393         struct nouveau_abi16_ntfy *ntfy;
 394         struct nouveau_object *object;
 395         struct nv_dma_class args = {};
 396         int ret;
 397
 398         if (unlikely(!abi16))
 399                 return -ENOMEM;
 400
 401         /* completely unnecessary for these chipsets... */
 402         if (unlikely(nv_device(abi16->device)->card_type >= NV_C0))
 403                 return nouveau_abi16_put(abi16, -EINVAL);
 404
 405         list_for_each_entry(temp, &abi16->channels, head) {
 406                 if (temp->chan->handle == (NVDRM_CHAN | info->channel)) {
 407                         chan = temp;
 408                         break;
 409                 }
 410         }
 411
 412         if (!chan)
 413                 return nouveau_abi16_put(abi16, -ENOENT);
 414
 415         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 416         if (!ntfy)
 417                 return nouveau_abi16_put(abi16, -ENOMEM);
 418
 419         list_add(&ntfy->head, &chan->notifiers);
 420         ntfy->handle = info->handle;
 421
 422         ret = nouveau_mm_head(&chan->heap, 1, info->size, info->size, 1,
 423                               &ntfy->node);
 424         if (ret)
 425                 goto done;
 426
 427         args.start = ntfy->node->offset;
 428         args.limit = ntfy->node->offset + ntfy->node->length - 1;
 429         if (device->card_type >= NV_50) {
 430                 args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM;
 431                 args.start += chan->ntfy_vma.offset;
 432                 args.limit += chan->ntfy_vma.offset;
 433         } else
 434         if (drm->agp.stat == ENABLED) {
 435                 args.flags  = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR;
 436                 args.start += drm->agp.base + chan->ntfy->bo.offset;
 437                 args.limit += drm->agp.base + chan->ntfy->bo.offset;
 438         } else {
 439                 args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR;
 440                 args.start += chan->ntfy->bo.offset;
 441                 args.limit += chan->ntfy->bo.offset;
 442         }
 443
 444         ret = nouveau_object_new(abi16->client, chan->chan->handle,
 445                                  ntfy->handle, 0x003d, &args,
 446                                  sizeof(args), &object);
 447         if (ret)
 448                 goto done;
 449
 450         info->offset = ntfy->node->offset;
 451
 452 done:
 453         if (ret)
 454                 nouveau_abi16_ntfy_fini(chan, ntfy);
 455         return nouveau_abi16_put(abi16, ret);
 456 }
 457
 458 int
 459 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
 460 {
 461         struct drm_nouveau_gpuobj_free *fini = data;
 462         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 463         struct nouveau_abi16_chan *chan = NULL, *temp;
 464         struct nouveau_abi16_ntfy *ntfy;
 465         int ret;
 466
 467         if (unlikely(!abi16))
 468                 return -ENOMEM;
 469
 470         list_for_each_entry(temp, &abi16->channels, head) {
 471                 if (temp->chan->handle == (NVDRM_CHAN | fini->channel)) {
 472                         chan = temp;
 473                         break;
 474                 }
 475         }
 476
 477         if (!chan)
 478                 return nouveau_abi16_put(abi16, -ENOENT);
 479
 480         /* synchronize with the user channel and destroy the gpu object */
 481         nouveau_channel_idle(chan->chan);
 482
 483         ret = nouveau_object_del(abi16->client, chan->chan->handle, fini->handle);
 484         if (ret)
 485                 return nouveau_abi16_put(abi16, ret);
 486
 487         /* cleanup extra state if this object was a notifier */
 488         list_for_each_entry(ntfy, &chan->notifiers, head) {
 489                 if (ntfy->handle == fini->handle) {
 490                         nouveau_mm_free(&chan->heap, &ntfy->node);
 491                         list_del(&ntfy->head);
 492                         break;
 493                 }
 494         }
 495
 496         return nouveau_abi16_put(abi16, 0);
 497 }