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_20:
  91         case NV_30:
  92         case NV_40:
  93                 return 0x016e;
  94         case NV_50:
  95                 return 0x506e;
  96         case NV_C0:
  97         case NV_D0:
  98         case NV_E0:
  99                 return 0x906e;
 100         }
 101
 102         return 0x0000;
 103 }
 104
 105 static void
 106 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
 107                         struct nouveau_abi16_ntfy *ntfy)
 108 {
 109         nouveau_mm_free(&chan->heap, &ntfy->node);
 110         list_del(&ntfy->head);
 111         kfree(ntfy);
 112 }
 113
 114 static void
 115 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
 116                         struct nouveau_abi16_chan *chan)
 117 {
 118         struct nouveau_abi16_ntfy *ntfy, *temp;
 119
 120         /* wait for all activity to stop before releasing notify object, which
 121          * may be still in use */
 122         if (chan->chan && chan->ntfy)
 123                 nouveau_channel_idle(chan->chan);
 124
 125         /* cleanup notifier state */
 126         list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
 127                 nouveau_abi16_ntfy_fini(chan, ntfy);
 128         }
 129
 130         if (chan->ntfy) {
 131                 nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
 132                 nouveau_bo_unpin(chan->ntfy);
 133                 drm_gem_object_unreference_unlocked(chan->ntfy->gem);
 134         }
 135
 136         if (chan->heap.block_size)
 137                 nouveau_mm_fini(&chan->heap);
 138
 139         /* destroy channel object, all children will be killed too */
 140         if (chan->chan) {
 141                 abi16->handles &= ~(1 << (chan->chan->handle & 0xffff));
 142                 nouveau_channel_del(&chan->chan);
 143         }
 144
 145         list_del(&chan->head);
 146         kfree(chan);
 147 }
 148
 149 void
 150 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 151 {
 152         struct nouveau_cli *cli = (void *)abi16->client;
 153         struct nouveau_abi16_chan *chan, *temp;
 154
 155         /* cleanup channels */
 156         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 157                 nouveau_abi16_chan_fini(abi16, chan);
 158         }
 159
 160         /* destroy the device object */
 161         nouveau_object_del(abi16->client, NVDRM_CLIENT, NVDRM_DEVICE);
 162
 163         kfree(cli->abi16);
 164         cli->abi16 = NULL;
 165 }
 166
 167 int
 168 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 169 {
 170         struct nouveau_drm *drm = nouveau_drm(dev);
 171         struct nouveau_device *device = nv_device(drm->device);
 172         struct nouveau_timer *ptimer = nouveau_timer(device);
 173         struct nouveau_graph *graph = (void *)nouveau_engine(device, NVDEV_ENGINE_GR);
 174         struct drm_nouveau_getparam *getparam = data;
 175
 176         switch (getparam->param) {
 177         case NOUVEAU_GETPARAM_CHIPSET_ID:
 178                 getparam->value = device->chipset;
 179                 break;
 180         case NOUVEAU_GETPARAM_PCI_VENDOR:
 181                 getparam->value = dev->pci_vendor;
 182                 break;
 183         case NOUVEAU_GETPARAM_PCI_DEVICE:
 184                 getparam->value = dev->pci_device;
 185                 break;
 186         case NOUVEAU_GETPARAM_BUS_TYPE:
 187                 if (drm_pci_device_is_agp(dev))
 188                         getparam->value = 0;
 189                 else
 190                 if (!pci_is_pcie(dev->pdev))
 191                         getparam->value = 1;
 192                 else
 193                         getparam->value = 2;
 194                 break;
 195         case NOUVEAU_GETPARAM_FB_SIZE:
 196                 getparam->value = drm->gem.vram_available;
 197                 break;
 198         case NOUVEAU_GETPARAM_AGP_SIZE:
 199                 getparam->value = drm->gem.gart_available;
 200                 break;
 201         case NOUVEAU_GETPARAM_VM_VRAM_BASE:
 202                 getparam->value = 0; /* deprecated */
 203                 break;
 204         case NOUVEAU_GETPARAM_PTIMER_TIME:
 205                 getparam->value = ptimer->read(ptimer);
 206                 break;
 207         case NOUVEAU_GETPARAM_HAS_BO_USAGE:
 208                 getparam->value = 1;
 209                 break;
 210         case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
 211                 getparam->value = 1;
 212                 break;
 213         case NOUVEAU_GETPARAM_GRAPH_UNITS:
 214                 getparam->value = graph->units ? graph->units(graph) : 0;
 215                 break;
 216         default:
 217                 nv_debug(device, "unknown parameter %lld\n", getparam->param);
 218                 return -EINVAL;
 219         }
 220
 221         return 0;
 222 }
 223
 224 int
 225 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
 226 {
 227         return -EINVAL;
 228 }
 229
 230 int
 231 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 232 {
 233         struct drm_nouveau_channel_alloc *init = data;
 234         struct nouveau_cli *cli = nouveau_cli(file_priv);
 235         struct nouveau_drm *drm = nouveau_drm(dev);
 236         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 237         struct nouveau_abi16_chan *chan;
 238         struct nouveau_client *client;
 239         struct nouveau_device *device;
 240         struct nouveau_instmem *imem;
 241         struct nouveau_fb *pfb;
 242         int ret;
 243
 244         if (unlikely(!abi16))
 245                 return -ENOMEM;
 246
 247         if (!drm->channel)
 248                 return nouveau_abi16_put(abi16, -ENODEV);
 249
 250         client = nv_client(abi16->client);
 251         device = nv_device(abi16->device);
 252         imem   = nouveau_instmem(device);
 253         pfb    = nouveau_fb(device);
 254
 255         /* hack to allow channel engine type specification on kepler */
 256         if (device->card_type >= NV_E0) {
 257                 if (init->fb_ctxdma_handle != ~0)
 258                         init->fb_ctxdma_handle = NVE0_CHANNEL_IND_ENGINE_GR;
 259                 else
 260                         init->fb_ctxdma_handle = init->tt_ctxdma_handle;
 261
 262                 /* allow flips to be executed if this is a graphics channel */
 263                 init->tt_ctxdma_handle = 0;
 264                 if (init->fb_ctxdma_handle == NVE0_CHANNEL_IND_ENGINE_GR)
 265                         init->tt_ctxdma_handle = 1;
 266         }
 267
 268         if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
 269                 return nouveau_abi16_put(abi16, -EINVAL);
 270
 271         /* allocate "abi16 channel" data and make up a handle for it */
 272         init->channel = ffsll(~abi16->handles);
 273         if (!init->channel--)
 274                 return nouveau_abi16_put(abi16, -ENOSPC);
 275
 276         chan = kzalloc(sizeof(*chan), GFP_KERNEL);
 277         if (!chan)
 278                 return nouveau_abi16_put(abi16, -ENOMEM);
 279
 280         INIT_LIST_HEAD(&chan->notifiers);
 281         list_add(&chan->head, &abi16->channels);
 282         abi16->handles |= (1 << init->channel);
 283
 284         /* create channel object and initialise dma and fence management */
 285         ret = nouveau_channel_new(drm, cli, NVDRM_DEVICE, NVDRM_CHAN |
 286                                   init->channel, init->fb_ctxdma_handle,
 287                                   init->tt_ctxdma_handle, &chan->chan);
 288         if (ret)
 289                 goto done;
 290
 291         if (device->card_type >= NV_50)
 292                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 293                                         NOUVEAU_GEM_DOMAIN_GART;
 294         else
 295         if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
 296                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
 297         else
 298                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
 299
 300         if (device->card_type < NV_C0) {
 301                 init->subchan[0].handle = 0x00000000;
 302                 init->subchan[0].grclass = 0x0000;
 303                 init->subchan[1].handle = NvSw;
 304                 init->subchan[1].grclass = 0x506e;
 305                 init->nr_subchan = 2;
 306         }
 307
 308         /* Named memory object area */
 309         ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
 310                               0, 0, &chan->ntfy);
 311         if (ret == 0)
 312                 ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT);
 313         if (ret)
 314                 goto done;
 315
 316         if (device->card_type >= NV_50) {
 317                 ret = nouveau_bo_vma_add(chan->ntfy, client->vm,
 318                                         &chan->ntfy_vma);
 319                 if (ret)
 320                         goto done;
 321         }
 322
 323         ret = drm_gem_handle_create(file_priv, chan->ntfy->gem,
 324                                     &init->notifier_handle);
 325         if (ret)
 326                 goto done;
 327
 328         ret = nouveau_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
 329 done:
 330         if (ret)
 331                 nouveau_abi16_chan_fini(abi16, chan);
 332         return nouveau_abi16_put(abi16, ret);
 333 }
 334
 335
 336 int
 337 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
 338 {
 339         struct drm_nouveau_channel_free *req = data;
 340         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 341         struct nouveau_abi16_chan *chan;
 342         int ret = -ENOENT;
 343
 344         if (unlikely(!abi16))
 345                 return -ENOMEM;
 346
 347         list_for_each_entry(chan, &abi16->channels, head) {
 348                 if (chan->chan->handle == (NVDRM_CHAN | req->channel)) {
 349                         nouveau_abi16_chan_fini(abi16, chan);
 350                         return nouveau_abi16_put(abi16, 0);
 351                 }
 352         }
 353
 354         return nouveau_abi16_put(abi16, ret);
 355 }
 356
 357 int
 358 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
 359 {
 360         struct drm_nouveau_grobj_alloc *init = data;
 361         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 362         struct nouveau_drm *drm = nouveau_drm(dev);
 363         struct nouveau_object *object;
 364         int ret;
 365
 366         if (unlikely(!abi16))
 367                 return -ENOMEM;
 368
 369         if (init->handle == ~0)
 370                 return nouveau_abi16_put(abi16, -EINVAL);
 371
 372         /* compatibility with userspace that assumes 506e for all chipsets */
 373         if (init->class == 0x506e) {
 374                 init->class = nouveau_abi16_swclass(drm);
 375                 if (init->class == 0x906e)
 376                         return nouveau_abi16_put(abi16, 0);
 377         }
 378
 379         ret = nouveau_object_new(abi16->client, NVDRM_CHAN | init->channel,
 380                                   init->handle, init->class, NULL, 0, &object);
 381         return nouveau_abi16_put(abi16, ret);
 382 }
 383
 384 int
 385 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 386 {
 387         struct drm_nouveau_notifierobj_alloc *info = data;
 388         struct nouveau_drm *drm = nouveau_drm(dev);
 389         struct nouveau_device *device = nv_device(drm->device);
 390         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 391         struct nouveau_abi16_chan *chan = NULL, *temp;
 392         struct nouveau_abi16_ntfy *ntfy;
 393         struct nouveau_object *object;
 394         struct nv_dma_class args = {};
 395         int ret;
 396
 397         if (unlikely(!abi16))
 398                 return -ENOMEM;
 399
 400         /* completely unnecessary for these chipsets... */
 401         if (unlikely(nv_device(abi16->device)->card_type >= NV_C0))
 402                 return nouveau_abi16_put(abi16, -EINVAL);
 403
 404         list_for_each_entry(temp, &abi16->channels, head) {
 405                 if (temp->chan->handle == (NVDRM_CHAN | info->channel)) {
 406                         chan = temp;
 407                         break;
 408                 }
 409         }
 410
 411         if (!chan)
 412                 return nouveau_abi16_put(abi16, -ENOENT);
 413
 414         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 415         if (!ntfy)
 416                 return nouveau_abi16_put(abi16, -ENOMEM);
 417
 418         list_add(&ntfy->head, &chan->notifiers);
 419         ntfy->handle = info->handle;
 420
 421         ret = nouveau_mm_head(&chan->heap, 1, info->size, info->size, 1,
 422                               &ntfy->node);
 423         if (ret)
 424                 goto done;
 425
 426         args.start = ntfy->node->offset;
 427         args.limit = ntfy->node->offset + ntfy->node->length - 1;
 428         if (device->card_type >= NV_50) {
 429                 args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM;
 430                 args.start += chan->ntfy_vma.offset;
 431                 args.limit += chan->ntfy_vma.offset;
 432         } else
 433         if (drm->agp.stat == ENABLED) {
 434                 args.flags  = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR;
 435                 args.start += drm->agp.base + chan->ntfy->bo.offset;
 436                 args.limit += drm->agp.base + chan->ntfy->bo.offset;
 437         } else {
 438                 args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR;
 439                 args.start += chan->ntfy->bo.offset;
 440                 args.limit += chan->ntfy->bo.offset;
 441         }
 442
 443         ret = nouveau_object_new(abi16->client, chan->chan->handle,
 444                                  ntfy->handle, 0x003d, &args,
 445                                  sizeof(args), &object);
 446         if (ret)
 447                 goto done;
 448
 449 done:
 450         if (ret)
 451                 nouveau_abi16_ntfy_fini(chan, ntfy);
 452         return nouveau_abi16_put(abi16, ret);
 453 }
 454
 455 int
 456 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
 457 {
 458         struct drm_nouveau_gpuobj_free *fini = data;
 459         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 460         struct nouveau_abi16_chan *chan = NULL, *temp;
 461         struct nouveau_abi16_ntfy *ntfy;
 462         int ret;
 463
 464         if (unlikely(!abi16))
 465                 return -ENOMEM;
 466
 467         list_for_each_entry(temp, &abi16->channels, head) {
 468                 if (temp->chan->handle == (NVDRM_CHAN | fini->channel)) {
 469                         chan = temp;
 470                         break;
 471                 }
 472         }
 473
 474         if (!chan)
 475                 return nouveau_abi16_put(abi16, -ENOENT);
 476
 477         /* synchronize with the user channel and destroy the gpu object */
 478         nouveau_channel_idle(chan->chan);
 479
 480         ret = nouveau_object_del(abi16->client, chan->chan->handle, fini->handle);
 481         if (ret)
 482                 return nouveau_abi16_put(abi16, ret);
 483
 484         /* cleanup extra state if this object was a notifier */
 485         list_for_each_entry(ntfy, &chan->notifiers, head) {
 486                 if (ntfy->handle == fini->handle) {
 487                         nouveau_mm_free(&chan->heap, &ntfy->node);
 488                         list_del(&ntfy->head);
 489                         break;
 490                 }
 491         }
 492
 493         return nouveau_abi16_put(abi16, 0);
 494 }