LXR linux/drivers/gpu/drm/nouveau/nouveau

   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
  41struct nouveau_abi16 *
  42nouveau_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
  75int
  76nouveau_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
  83u16
  84nouveau_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
 105static void
 106nouveau_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
 114static void
 115nouveau_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
 149void
 150nouveau_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
 167int
 168nouveau_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
 224int
 225nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
 226{
 227        return -EINVAL;
 228}
 229
 230int
 231nouveau_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);
 329done:
 330        if (ret)
 331                nouveau_abi16_chan_fini(abi16, chan);
 332        return nouveau_abi16_put(abi16, ret);
 333}
 334
 335
 336int
 337nouveau_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
 357int
 358nouveau_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
 384int
 385nouveau_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
 449done:
 450        if (ret)
 451                nouveau_abi16_ntfy_fini(chan, ntfy);
 452        return nouveau_abi16_put(abi16, ret);
 453}
 454
 455int
 456nouveau_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}
 495