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         case GM100:
 101                 return 0x906e;
 102         }
 103
 104         return 0x0000;
 105 }
 106
 107 static void
 108 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
 109                         struct nouveau_abi16_ntfy *ntfy)
 110 {
 111         nouveau_mm_free(&chan->heap, &ntfy->node);
 112         list_del(&ntfy->head);
 113         kfree(ntfy);
 114 }
 115
 116 static void
 117 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
 118                         struct nouveau_abi16_chan *chan)
 119 {
 120         struct nouveau_abi16_ntfy *ntfy, *temp;
 121
 122         /* wait for all activity to stop before releasing notify object, which
 123          * may be still in use */
 124         if (chan->chan && chan->ntfy)
 125                 nouveau_channel_idle(chan->chan);
 126
 127         /* cleanup notifier state */
 128         list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
 129                 nouveau_abi16_ntfy_fini(chan, ntfy);
 130         }
 131
 132         if (chan->ntfy) {
 133                 nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
 134                 nouveau_bo_unpin(chan->ntfy);
 135                 drm_gem_object_unreference_unlocked(&chan->ntfy->gem);
 136         }
 137
 138         if (chan->heap.block_size)
 139                 nouveau_mm_fini(&chan->heap);
 140
 141         /* destroy channel object, all children will be killed too */
 142         if (chan->chan) {
 143                 abi16->handles &= ~(1ULL << (chan->chan->handle & 0xffff));
 144                 nouveau_channel_del(&chan->chan);
 145         }
 146
 147         list_del(&chan->head);
 148         kfree(chan);
 149 }
 150
 151 void
 152 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 153 {
 154         struct nouveau_cli *cli = (void *)abi16->client;
 155         struct nouveau_abi16_chan *chan, *temp;
 156
 157         /* cleanup channels */
 158         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 159                 nouveau_abi16_chan_fini(abi16, chan);
 160         }
 161
 162         /* destroy the device object */
 163         nouveau_object_del(abi16->client, NVDRM_CLIENT, NVDRM_DEVICE);
 164
 165         kfree(cli->abi16);
 166         cli->abi16 = NULL;
 167 }
 168
 169 int
 170 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 171 {
 172         struct nouveau_drm *drm = nouveau_drm(dev);
 173         struct nouveau_device *device = nv_device(drm->device);
 174         struct nouveau_timer *ptimer = nouveau_timer(device);
 175         struct nouveau_graph *graph = (void *)nouveau_engine(device, NVDEV_ENGINE_GR);
 176         struct drm_nouveau_getparam *getparam = data;
 177
 178         switch (getparam->param) {
 179         case NOUVEAU_GETPARAM_CHIPSET_ID:
 180                 getparam->value = device->chipset;
 181                 break;
 182         case NOUVEAU_GETPARAM_PCI_VENDOR:
 183                 if (nv_device_is_pci(device))
 184                         getparam->value = dev->pdev->vendor;
 185                 else
 186                         getparam->value = 0;
 187                 break;
 188         case NOUVEAU_GETPARAM_PCI_DEVICE:
 189                 if (nv_device_is_pci(device))
 190                         getparam->value = dev->pdev->device;
 191                 else
 192                         getparam->value = 0;
 193                 break;
 194         case NOUVEAU_GETPARAM_BUS_TYPE:
 195                 if (!nv_device_is_pci(device))
 196                         getparam->value = 3;
 197                 else
 198                 if (drm_pci_device_is_agp(dev))
 199                         getparam->value = 0;
 200                 else
 201                 if (!pci_is_pcie(dev->pdev))
 202                         getparam->value = 1;
 203                 else
 204                         getparam->value = 2;
 205                 break;
 206         case NOUVEAU_GETPARAM_FB_SIZE:
 207                 getparam->value = drm->gem.vram_available;
 208                 break;
 209         case NOUVEAU_GETPARAM_AGP_SIZE:
 210                 getparam->value = drm->gem.gart_available;
 211                 break;
 212         case NOUVEAU_GETPARAM_VM_VRAM_BASE:
 213                 getparam->value = 0; /* deprecated */
 214                 break;
 215         case NOUVEAU_GETPARAM_PTIMER_TIME:
 216                 getparam->value = ptimer->read(ptimer);
 217                 break;
 218         case NOUVEAU_GETPARAM_HAS_BO_USAGE:
 219                 getparam->value = 1;
 220                 break;
 221         case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
 222                 getparam->value = 1;
 223                 break;
 224         case NOUVEAU_GETPARAM_GRAPH_UNITS:
 225                 getparam->value = graph->units ? graph->units(graph) : 0;
 226                 break;
 227         default:
 228                 nv_debug(device, "unknown parameter %lld\n", getparam->param);
 229                 return -EINVAL;
 230         }
 231
 232         return 0;
 233 }
 234
 235 int
 236 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
 237 {
 238         return -EINVAL;
 239 }
 240
 241 int
 242 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 243 {
 244         struct drm_nouveau_channel_alloc *init = data;
 245         struct nouveau_cli *cli = nouveau_cli(file_priv);
 246         struct nouveau_drm *drm = nouveau_drm(dev);
 247         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 248         struct nouveau_abi16_chan *chan;
 249         struct nouveau_client *client;
 250         struct nouveau_device *device;
 251         struct nouveau_instmem *imem;
 252         struct nouveau_fb *pfb;
 253         int ret;
 254
 255         if (unlikely(!abi16))
 256                 return -ENOMEM;
 257
 258         if (!drm->channel)
 259                 return nouveau_abi16_put(abi16, -ENODEV);
 260
 261         client = nv_client(abi16->client);
 262         device = nv_device(abi16->device);
 263         imem   = nouveau_instmem(device);
 264         pfb    = nouveau_fb(device);
 265
 266         /* hack to allow channel engine type specification on kepler */
 267         if (device->card_type >= NV_E0) {
 268                 if (init->fb_ctxdma_handle != ~0)
 269                         init->fb_ctxdma_handle = NVE0_CHANNEL_IND_ENGINE_GR;
 270                 else
 271                         init->fb_ctxdma_handle = init->tt_ctxdma_handle;
 272
 273                 /* allow flips to be executed if this is a graphics channel */
 274                 init->tt_ctxdma_handle = 0;
 275                 if (init->fb_ctxdma_handle == NVE0_CHANNEL_IND_ENGINE_GR)
 276                         init->tt_ctxdma_handle = 1;
 277         }
 278
 279         if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
 280                 return nouveau_abi16_put(abi16, -EINVAL);
 281
 282         /* allocate "abi16 channel" data and make up a handle for it */
 283         init->channel = __ffs64(~abi16->handles);
 284         if (~abi16->handles == 0)
 285                 return nouveau_abi16_put(abi16, -ENOSPC);
 286
 287         chan = kzalloc(sizeof(*chan), GFP_KERNEL);
 288         if (!chan)
 289                 return nouveau_abi16_put(abi16, -ENOMEM);
 290
 291         INIT_LIST_HEAD(&chan->notifiers);
 292         list_add(&chan->head, &abi16->channels);
 293         abi16->handles |= (1ULL << init->channel);
 294
 295         /* create channel object and initialise dma and fence management */
 296         ret = nouveau_channel_new(drm, cli, NVDRM_DEVICE, NVDRM_CHAN |
 297                                   init->channel, init->fb_ctxdma_handle,
 298                                   init->tt_ctxdma_handle, &chan->chan);
 299         if (ret)
 300                 goto done;
 301
 302         if (device->card_type >= NV_50)
 303                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 304                                         NOUVEAU_GEM_DOMAIN_GART;
 305         else
 306         if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
 307                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
 308         else
 309                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
 310
 311         if (device->card_type < NV_10) {
 312                 init->subchan[0].handle = 0x00000000;
 313                 init->subchan[0].grclass = 0x0000;
 314                 init->subchan[1].handle = NvSw;
 315                 init->subchan[1].grclass = 0x506e;
 316                 init->nr_subchan = 2;
 317         }
 318
 319         /* Named memory object area */
 320         ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
 321                               0, 0, &chan->ntfy);
 322         if (ret == 0)
 323                 ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT);
 324         if (ret)
 325                 goto done;
 326
 327         if (device->card_type >= NV_50) {
 328                 ret = nouveau_bo_vma_add(chan->ntfy, client->vm,
 329                                         &chan->ntfy_vma);
 330                 if (ret)
 331                         goto done;
 332         }
 333
 334         ret = drm_gem_handle_create(file_priv, &chan->ntfy->gem,
 335                                     &init->notifier_handle);
 336         if (ret)
 337                 goto done;
 338
 339         ret = nouveau_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
 340 done:
 341         if (ret)
 342                 nouveau_abi16_chan_fini(abi16, chan);
 343         return nouveau_abi16_put(abi16, ret);
 344 }
 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         int ret = -ENOENT;
 354
 355         if (unlikely(!abi16))
 356                 return -ENOMEM;
 357
 358         list_for_each_entry(chan, &abi16->channels, head) {
 359                 if (chan->chan->handle == (NVDRM_CHAN | req->channel)) {
 360                         nouveau_abi16_chan_fini(abi16, chan);
 361                         return nouveau_abi16_put(abi16, 0);
 362                 }
 363         }
 364
 365         return nouveau_abi16_put(abi16, ret);
 366 }
 367
 368 int
 369 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
 370 {
 371         struct drm_nouveau_grobj_alloc *init = data;
 372         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 373         struct nouveau_drm *drm = nouveau_drm(dev);
 374         struct nouveau_object *object;
 375         int ret;
 376
 377         if (unlikely(!abi16))
 378                 return -ENOMEM;
 379
 380         if (init->handle == ~0)
 381                 return nouveau_abi16_put(abi16, -EINVAL);
 382
 383         /* compatibility with userspace that assumes 506e for all chipsets */
 384         if (init->class == 0x506e) {
 385                 init->class = nouveau_abi16_swclass(drm);
 386                 if (init->class == 0x906e)
 387                         return nouveau_abi16_put(abi16, 0);
 388         }
 389
 390         ret = nouveau_object_new(abi16->client, NVDRM_CHAN | init->channel,
 391                                   init->handle, init->class, NULL, 0, &object);
 392         return nouveau_abi16_put(abi16, ret);
 393 }
 394
 395 int
 396 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 397 {
 398         struct drm_nouveau_notifierobj_alloc *info = data;
 399         struct nouveau_drm *drm = nouveau_drm(dev);
 400         struct nouveau_device *device = nv_device(drm->device);
 401         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 402         struct nouveau_abi16_chan *chan = NULL, *temp;
 403         struct nouveau_abi16_ntfy *ntfy;
 404         struct nouveau_object *object;
 405         struct nv_dma_class args = {};
 406         int ret;
 407
 408         if (unlikely(!abi16))
 409                 return -ENOMEM;
 410
 411         /* completely unnecessary for these chipsets... */
 412         if (unlikely(nv_device(abi16->device)->card_type >= NV_C0))
 413                 return nouveau_abi16_put(abi16, -EINVAL);
 414
 415         list_for_each_entry(temp, &abi16->channels, head) {
 416                 if (temp->chan->handle == (NVDRM_CHAN | info->channel)) {
 417                         chan = temp;
 418                         break;
 419                 }
 420         }
 421
 422         if (!chan)
 423                 return nouveau_abi16_put(abi16, -ENOENT);
 424
 425         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 426         if (!ntfy)
 427                 return nouveau_abi16_put(abi16, -ENOMEM);
 428
 429         list_add(&ntfy->head, &chan->notifiers);
 430         ntfy->handle = info->handle;
 431
 432         ret = nouveau_mm_head(&chan->heap, 1, info->size, info->size, 1,
 433                               &ntfy->node);
 434         if (ret)
 435                 goto done;
 436
 437         args.start = ntfy->node->offset;
 438         args.limit = ntfy->node->offset + ntfy->node->length - 1;
 439         if (device->card_type >= NV_50) {
 440                 args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM;
 441                 args.start += chan->ntfy_vma.offset;
 442                 args.limit += chan->ntfy_vma.offset;
 443         } else
 444         if (drm->agp.stat == ENABLED) {
 445                 args.flags  = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR;
 446                 args.start += drm->agp.base + chan->ntfy->bo.offset;
 447                 args.limit += drm->agp.base + chan->ntfy->bo.offset;
 448         } else {
 449                 args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR;
 450                 args.start += chan->ntfy->bo.offset;
 451                 args.limit += chan->ntfy->bo.offset;
 452         }
 453
 454         ret = nouveau_object_new(abi16->client, chan->chan->handle,
 455                                  ntfy->handle, 0x003d, &args,
 456                                  sizeof(args), &object);
 457         if (ret)
 458                 goto done;
 459
 460         info->offset = ntfy->node->offset;
 461
 462 done:
 463         if (ret)
 464                 nouveau_abi16_ntfy_fini(chan, ntfy);
 465         return nouveau_abi16_put(abi16, ret);
 466 }
 467
 468 int
 469 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
 470 {
 471         struct drm_nouveau_gpuobj_free *fini = data;
 472         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 473         struct nouveau_abi16_chan *chan = NULL, *temp;
 474         struct nouveau_abi16_ntfy *ntfy;
 475         int ret;
 476
 477         if (unlikely(!abi16))
 478                 return -ENOMEM;
 479
 480         list_for_each_entry(temp, &abi16->channels, head) {
 481                 if (temp->chan->handle == (NVDRM_CHAN | fini->channel)) {
 482                         chan = temp;
 483                         break;
 484                 }
 485         }
 486
 487         if (!chan)
 488                 return nouveau_abi16_put(abi16, -ENOENT);
 489
 490         /* synchronize with the user channel and destroy the gpu object */
 491         nouveau_channel_idle(chan->chan);
 492
 493         ret = nouveau_object_del(abi16->client, chan->chan->handle, fini->handle);
 494         if (ret)
 495                 return nouveau_abi16_put(abi16, ret);
 496
 497         /* cleanup extra state if this object was a notifier */
 498         list_for_each_entry(ntfy, &chan->notifiers, head) {
 499                 if (ntfy->handle == fini->handle) {
 500                         nouveau_mm_free(&chan->heap, &ntfy->node);
 501                         list_del(&ntfy->head);
 502                         break;
 503                 }
 504         }
 505
 506         return nouveau_abi16_put(abi16, 0);
 507 }