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         /* wait for all activity to stop before releasing notify object, which
 120          * may be still in use */
 121         if (chan->chan && chan->ntfy)
 122                 nouveau_channel_idle(chan->chan);
 123
 124         /* cleanup notifier state */
 125         list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
 126                 nouveau_abi16_ntfy_fini(chan, ntfy);
 127         }
 128
 129         if (chan->ntfy) {
 130                 nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
 131                 drm_gem_object_unreference_unlocked(chan->ntfy->gem);
 132         }
 133
 134         if (chan->heap.block_size)
 135                 nouveau_mm_fini(&chan->heap);
 136
 137         /* destroy channel object, all children will be killed too */
 138         if (chan->chan) {
 139                 abi16->handles &= ~(1 << (chan->chan->handle & 0xffff));
 140                 nouveau_channel_del(&chan->chan);
 141         }
 142
 143         list_del(&chan->head);
 144         kfree(chan);
 145 }
 146
 147 void
 148 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 149 {
 150         struct nouveau_cli *cli = (void *)abi16->client;
 151         struct nouveau_abi16_chan *chan, *temp;
 152
 153         /* cleanup channels */
 154         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 155                 nouveau_abi16_chan_fini(abi16, chan);
 156         }
 157
 158         /* destroy the device object */
 159         nouveau_object_del(abi16->client, NVDRM_CLIENT, NVDRM_DEVICE);
 160
 161         kfree(cli->abi16);
 162         cli->abi16 = NULL;
 163 }
 164
 165 int
 166 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 167 {
 168         struct nouveau_drm *drm = nouveau_drm(dev);
 169         struct nouveau_device *device = nv_device(drm->device);
 170         struct nouveau_timer *ptimer = nouveau_timer(device);
 171         struct drm_nouveau_getparam *getparam = data;
 172
 173         switch (getparam->param) {
 174         case NOUVEAU_GETPARAM_CHIPSET_ID:
 175                 getparam->value = device->chipset;
 176                 break;
 177         case NOUVEAU_GETPARAM_PCI_VENDOR:
 178                 getparam->value = dev->pci_vendor;
 179                 break;
 180         case NOUVEAU_GETPARAM_PCI_DEVICE:
 181                 getparam->value = dev->pci_device;
 182                 break;
 183         case NOUVEAU_GETPARAM_BUS_TYPE:
 184                 if (drm_pci_device_is_agp(dev))
 185                         getparam->value = 0;
 186                 else
 187                 if (!pci_is_pcie(dev->pdev))
 188                         getparam->value = 1;
 189                 else
 190                         getparam->value = 2;
 191                 break;
 192         case NOUVEAU_GETPARAM_FB_SIZE:
 193                 getparam->value = drm->gem.vram_available;
 194                 break;
 195         case NOUVEAU_GETPARAM_AGP_SIZE:
 196                 getparam->value = drm->gem.gart_available;
 197                 break;
 198         case NOUVEAU_GETPARAM_VM_VRAM_BASE:
 199                 getparam->value = 0; /* deprecated */
 200                 break;
 201         case NOUVEAU_GETPARAM_PTIMER_TIME:
 202                 getparam->value = ptimer->read(ptimer);
 203                 break;
 204         case NOUVEAU_GETPARAM_HAS_BO_USAGE:
 205                 getparam->value = 1;
 206                 break;
 207         case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
 208                 getparam->value = 1;
 209                 break;
 210         case NOUVEAU_GETPARAM_GRAPH_UNITS:
 211                 /* NV40 and NV50 versions are quite different, but register
 212                  * address is the same. User is supposed to know the card
 213                  * family anyway... */
 214                 if (device->chipset >= 0x40) {
 215                         getparam->value = nv_rd32(device, 0x001540);
 216                         break;
 217                 }
 218                 /* FALLTHRU */
 219         default:
 220                 nv_debug(device, "unknown parameter %lld\n", getparam->param);
 221                 return -EINVAL;
 222         }
 223
 224         return 0;
 225 }
 226
 227 int
 228 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
 229 {
 230         return -EINVAL;
 231 }
 232
 233 int
 234 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 235 {
 236         struct drm_nouveau_channel_alloc *init = data;
 237         struct nouveau_cli *cli = nouveau_cli(file_priv);
 238         struct nouveau_drm *drm = nouveau_drm(dev);
 239         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 240         struct nouveau_abi16_chan *chan;
 241         struct nouveau_client *client;
 242         struct nouveau_device *device;
 243         struct nouveau_instmem *imem;
 244         struct nouveau_fb *pfb;
 245         int ret;
 246
 247         if (unlikely(!abi16))
 248                 return -ENOMEM;
 249
 250         if (!drm->channel)
 251                 return nouveau_abi16_put(abi16, -ENODEV);
 252
 253         client = nv_client(abi16->client);
 254         device = nv_device(abi16->device);
 255         imem   = nouveau_instmem(device);
 256         pfb    = nouveau_fb(device);
 257
 258         /* hack to allow channel engine type specification on kepler */
 259         if (device->card_type >= NV_E0) {
 260                 if (init->fb_ctxdma_handle != ~0)
 261                         init->fb_ctxdma_handle = NVE0_CHANNEL_IND_ENGINE_GR;
 262                 else
 263                         init->fb_ctxdma_handle = init->tt_ctxdma_handle;
 264
 265                 /* allow flips to be executed if this is a graphics channel */
 266                 init->tt_ctxdma_handle = 0;
 267                 if (init->fb_ctxdma_handle == NVE0_CHANNEL_IND_ENGINE_GR)
 268                         init->tt_ctxdma_handle = 1;
 269         }
 270
 271         if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
 272                 return nouveau_abi16_put(abi16, -EINVAL);
 273
 274         /* allocate "abi16 channel" data and make up a handle for it */
 275         init->channel = ffsll(~abi16->handles);
 276         if (!init->channel--)
 277                 return nouveau_abi16_put(abi16, -ENOSPC);
 278
 279         chan = kzalloc(sizeof(*chan), GFP_KERNEL);
 280         if (!chan)
 281                 return nouveau_abi16_put(abi16, -ENOMEM);
 282
 283         INIT_LIST_HEAD(&chan->notifiers);
 284         list_add(&chan->head, &abi16->channels);
 285         abi16->handles |= (1 << init->channel);
 286
 287         /* create channel object and initialise dma and fence management */
 288         ret = nouveau_channel_new(drm, cli, NVDRM_DEVICE, NVDRM_CHAN |
 289                                   init->channel, init->fb_ctxdma_handle,
 290                                   init->tt_ctxdma_handle, &chan->chan);
 291         if (ret)
 292                 goto done;
 293
 294         if (device->card_type >= NV_50)
 295                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 296                                         NOUVEAU_GEM_DOMAIN_GART;
 297         else
 298         if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
 299                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
 300         else
 301                 init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
 302
 303         if (device->card_type < NV_C0) {
 304                 init->subchan[0].handle = 0x00000000;
 305                 init->subchan[0].grclass = 0x0000;
 306                 init->subchan[1].handle = NvSw;
 307                 init->subchan[1].grclass = 0x506e;
 308                 init->nr_subchan = 2;
 309         }
 310
 311         /* Named memory object area */
 312         ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
 313                               0, 0, &chan->ntfy);
 314         if (ret == 0)
 315                 ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT);
 316         if (ret)
 317                 goto done;
 318
 319         if (device->card_type >= NV_50) {
 320                 ret = nouveau_bo_vma_add(chan->ntfy, client->vm,
 321                                         &chan->ntfy_vma);
 322                 if (ret)
 323                         goto done;
 324         }
 325
 326         ret = drm_gem_handle_create(file_priv, chan->ntfy->gem,
 327                                     &init->notifier_handle);
 328         if (ret)
 329                 goto done;
 330
 331         ret = nouveau_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
 332 done:
 333         if (ret)
 334                 nouveau_abi16_chan_fini(abi16, chan);
 335         return nouveau_abi16_put(abi16, ret);
 336 }
 337
 338
 339 int
 340 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
 341 {
 342         struct drm_nouveau_channel_free *req = data;
 343         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 344         struct nouveau_abi16_chan *chan;
 345         int ret = -ENOENT;
 346
 347         if (unlikely(!abi16))
 348                 return -ENOMEM;
 349
 350         list_for_each_entry(chan, &abi16->channels, head) {
 351                 if (chan->chan->handle == (NVDRM_CHAN | req->channel)) {
 352                         nouveau_abi16_chan_fini(abi16, chan);
 353                         return nouveau_abi16_put(abi16, 0);
 354                 }
 355         }
 356
 357         return nouveau_abi16_put(abi16, ret);
 358 }
 359
 360 int
 361 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
 362 {
 363         struct drm_nouveau_grobj_alloc *init = data;
 364         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 365         struct nouveau_drm *drm = nouveau_drm(dev);
 366         struct nouveau_object *object;
 367         int ret;
 368
 369         if (unlikely(!abi16))
 370                 return -ENOMEM;
 371
 372         if (init->handle == ~0)
 373                 return nouveau_abi16_put(abi16, -EINVAL);
 374
 375         /* compatibility with userspace that assumes 506e for all chipsets */
 376         if (init->class == 0x506e) {
 377                 init->class = nouveau_abi16_swclass(drm);
 378                 if (init->class == 0x906e)
 379                         return nouveau_abi16_put(abi16, 0);
 380         }
 381
 382         ret = nouveau_object_new(abi16->client, NVDRM_CHAN | init->channel,
 383                                   init->handle, init->class, NULL, 0, &object);
 384         return nouveau_abi16_put(abi16, ret);
 385 }
 386
 387 int
 388 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 389 {
 390         struct drm_nouveau_notifierobj_alloc *info = data;
 391         struct nouveau_drm *drm = nouveau_drm(dev);
 392         struct nouveau_device *device = nv_device(drm->device);
 393         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 394         struct nouveau_abi16_chan *chan, *temp;
 395         struct nouveau_abi16_ntfy *ntfy;
 396         struct nouveau_object *object;
 397         struct nv_dma_class args = {};
 398         int ret;
 399
 400         if (unlikely(!abi16))
 401                 return -ENOMEM;
 402
 403         /* completely unnecessary for these chipsets... */
 404         if (unlikely(nv_device(abi16->device)->card_type >= NV_C0))
 405                 return nouveau_abi16_put(abi16, -EINVAL);
 406
 407         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 408                 if (chan->chan->handle == (NVDRM_CHAN | info->channel))
 409                         break;
 410                 chan = NULL;
 411         }
 412
 413         if (!chan)
 414                 return nouveau_abi16_put(abi16, -ENOENT);
 415
 416         ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 417         if (!ntfy)
 418                 return nouveau_abi16_put(abi16, -ENOMEM);
 419
 420         list_add(&ntfy->head, &chan->notifiers);
 421         ntfy->handle = info->handle;
 422
 423         ret = nouveau_mm_head(&chan->heap, 1, info->size, info->size, 1,
 424                               &ntfy->node);
 425         if (ret)
 426                 goto done;
 427
 428         args.start = ntfy->node->offset;
 429         args.limit = ntfy->node->offset + ntfy->node->length - 1;
 430         if (device->card_type >= NV_50) {
 431                 args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM;
 432                 args.start += chan->ntfy_vma.offset;
 433                 args.limit += chan->ntfy_vma.offset;
 434         } else
 435         if (drm->agp.stat == ENABLED) {
 436                 args.flags  = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR;
 437                 args.start += drm->agp.base + chan->ntfy->bo.offset;
 438                 args.limit += drm->agp.base + chan->ntfy->bo.offset;
 439         } else {
 440                 args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR;
 441                 args.start += chan->ntfy->bo.offset;
 442                 args.limit += chan->ntfy->bo.offset;
 443         }
 444
 445         ret = nouveau_object_new(abi16->client, chan->chan->handle,
 446                                  ntfy->handle, 0x003d, &args,
 447                                  sizeof(args), &object);
 448         if (ret)
 449                 goto done;
 450
 451 done:
 452         if (ret)
 453                 nouveau_abi16_ntfy_fini(chan, ntfy);
 454         return nouveau_abi16_put(abi16, ret);
 455 }
 456
 457 int
 458 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
 459 {
 460         struct drm_nouveau_gpuobj_free *fini = data;
 461         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 462         struct nouveau_abi16_chan *chan, *temp;
 463         struct nouveau_abi16_ntfy *ntfy;
 464         int ret;
 465
 466         if (unlikely(!abi16))
 467                 return -ENOMEM;
 468
 469         list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 470                 if (chan->chan->handle == (NVDRM_CHAN | fini->channel))
 471                         break;
 472                 chan = NULL;
 473         }
 474
 475         if (!chan)
 476                 return nouveau_abi16_put(abi16, -ENOENT);
 477
 478         /* synchronize with the user channel and destroy the gpu object */
 479         nouveau_channel_idle(chan->chan);
 480
 481         ret = nouveau_object_del(abi16->client, chan->chan->handle, fini->handle);
 482         if (ret)
 483                 return nouveau_abi16_put(abi16, ret);
 484
 485         /* cleanup extra state if this object was a notifier */
 486         list_for_each_entry(ntfy, &chan->notifiers, head) {
 487                 if (ntfy->handle == fini->handle) {
 488                         nouveau_mm_free(&chan->heap, &ntfy->node);
 489                         list_del(&ntfy->head);
 490                         break;
 491                 }
 492         }
 493
 494         return nouveau_abi16_put(abi16, 0);
 495 }