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 <nvif/client.h>
  25#include <nvif/driver.h>
  26#include <nvif/ioctl.h>
  27#include <nvif/class.h>
  28
  29#include "nouveau_drm.h"
  30#include "nouveau_dma.h"
  31#include "nouveau_gem.h"
  32#include "nouveau_chan.h"
  33#include "nouveau_abi16.h"
  34
  35struct nouveau_abi16 *
  36nouveau_abi16_get(struct drm_file *file_priv, struct drm_device *dev)
  37{
  38        struct nouveau_cli *cli = nouveau_cli(file_priv);
  39        mutex_lock(&cli->mutex);
  40        if (!cli->abi16) {
  41                struct nouveau_abi16 *abi16;
  42                cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
  43                if (cli->abi16) {
  44                        struct nv_device_v0 args = {
  45                                .device = ~0ULL,
  46                        };
  47
  48                        INIT_LIST_HEAD(&abi16->channels);
  49
  50                        /* allocate device object targeting client's default
  51                         * device (ie. the one that belongs to the fd it
  52                         * opened)
  53                         */
  54                        if (nvif_device_init(&cli->base.base, NULL,
  55                                             NOUVEAU_ABI16_DEVICE, NV_DEVICE,
  56                                             &args, sizeof(args),
  57                                             &abi16->device) == 0)
  58                                return cli->abi16;
  59
  60                        kfree(cli->abi16);
  61                        cli->abi16 = NULL;
  62                }
  63
  64                mutex_unlock(&cli->mutex);
  65        }
  66        return cli->abi16;
  67}
  68
  69int
  70nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
  71{
  72        struct nouveau_cli *cli = (void *)nvif_client(&abi16->device.base);
  73        mutex_unlock(&cli->mutex);
  74        return ret;
  75}
  76
  77u16
  78nouveau_abi16_swclass(struct nouveau_drm *drm)
  79{
  80        switch (drm->device.info.family) {
  81        case NV_DEVICE_INFO_V0_TNT:
  82                return 0x006e;
  83        case NV_DEVICE_INFO_V0_CELSIUS:
  84        case NV_DEVICE_INFO_V0_KELVIN:
  85        case NV_DEVICE_INFO_V0_RANKINE:
  86        case NV_DEVICE_INFO_V0_CURIE:
  87                return 0x016e;
  88        case NV_DEVICE_INFO_V0_TESLA:
  89                return 0x506e;
  90        case NV_DEVICE_INFO_V0_FERMI:
  91        case NV_DEVICE_INFO_V0_KEPLER:
  92        case NV_DEVICE_INFO_V0_MAXWELL:
  93                return 0x906e;
  94        }
  95
  96        return 0x0000;
  97}
  98
  99static void
 100nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
 101                        struct nouveau_abi16_ntfy *ntfy)
 102{
 103        nouveau_mm_free(&chan->heap, &ntfy->node);
 104        list_del(&ntfy->head);
 105        kfree(ntfy);
 106}
 107
 108static void
 109nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
 110                        struct nouveau_abi16_chan *chan)
 111{
 112        struct nouveau_abi16_ntfy *ntfy, *temp;
 113
 114        /* wait for all activity to stop before releasing notify object, which
 115         * may be still in use */
 116        if (chan->chan && chan->ntfy)
 117                nouveau_channel_idle(chan->chan);
 118
 119        /* cleanup notifier state */
 120        list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
 121                nouveau_abi16_ntfy_fini(chan, ntfy);
 122        }
 123
 124        if (chan->ntfy) {
 125                nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
 126                nouveau_bo_unpin(chan->ntfy);
 127                drm_gem_object_unreference_unlocked(&chan->ntfy->gem);
 128        }
 129
 130        if (chan->heap.block_size)
 131                nouveau_mm_fini(&chan->heap);
 132
 133        /* destroy channel object, all children will be killed too */
 134        if (chan->chan) {
 135                abi16->handles &= ~(1ULL << (chan->chan->object->handle & 0xffff));
 136                nouveau_channel_del(&chan->chan);
 137        }
 138
 139        list_del(&chan->head);
 140        kfree(chan);
 141}
 142
 143void
 144nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 145{
 146        struct nouveau_cli *cli = (void *)nvif_client(&abi16->device.base);
 147        struct nouveau_abi16_chan *chan, *temp;
 148
 149        /* cleanup channels */
 150        list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 151                nouveau_abi16_chan_fini(abi16, chan);
 152        }
 153
 154        /* destroy the device object */
 155        nvif_device_fini(&abi16->device);
 156
 157        kfree(cli->abi16);
 158        cli->abi16 = NULL;
 159}
 160
 161int
 162nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 163{
 164        struct nouveau_cli *cli = nouveau_cli(file_priv);
 165        struct nouveau_drm *drm = nouveau_drm(dev);
 166        struct nvif_device *device = &drm->device;
 167        struct nouveau_timer *ptimer = nvkm_timer(device);
 168        struct nouveau_graph *graph = nvkm_gr(device);
 169        struct drm_nouveau_getparam *getparam = data;
 170
 171        switch (getparam->param) {
 172        case NOUVEAU_GETPARAM_CHIPSET_ID:
 173                getparam->value = device->info.chipset;
 174                break;
 175        case NOUVEAU_GETPARAM_PCI_VENDOR:
 176                if (nv_device_is_pci(nvkm_device(device)))
 177                        getparam->value = dev->pdev->vendor;
 178                else
 179                        getparam->value = 0;
 180                break;
 181        case NOUVEAU_GETPARAM_PCI_DEVICE:
 182                if (nv_device_is_pci(nvkm_device(device)))
 183                        getparam->value = dev->pdev->device;
 184                else
 185                        getparam->value = 0;
 186                break;
 187        case NOUVEAU_GETPARAM_BUS_TYPE:
 188                if (!nv_device_is_pci(nvkm_device(device)))
 189                        getparam->value = 3;
 190                else
 191                if (drm_pci_device_is_agp(dev))
 192                        getparam->value = 0;
 193                else
 194                if (!pci_is_pcie(dev->pdev))
 195                        getparam->value = 1;
 196                else
 197                        getparam->value = 2;
 198                break;
 199        case NOUVEAU_GETPARAM_FB_SIZE:
 200                getparam->value = drm->gem.vram_available;
 201                break;
 202        case NOUVEAU_GETPARAM_AGP_SIZE:
 203                getparam->value = drm->gem.gart_available;
 204                break;
 205        case NOUVEAU_GETPARAM_VM_VRAM_BASE:
 206                getparam->value = 0; /* deprecated */
 207                break;
 208        case NOUVEAU_GETPARAM_PTIMER_TIME:
 209                getparam->value = ptimer->read(ptimer);
 210                break;
 211        case NOUVEAU_GETPARAM_HAS_BO_USAGE:
 212                getparam->value = 1;
 213                break;
 214        case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
 215                getparam->value = 1;
 216                break;
 217        case NOUVEAU_GETPARAM_GRAPH_UNITS:
 218                getparam->value = graph->units ? graph->units(graph) : 0;
 219                break;
 220        default:
 221                NV_PRINTK(debug, cli, "unknown parameter %lld\n", getparam->param);
 222                return -EINVAL;
 223        }
 224
 225        return 0;
 226}
 227
 228int
 229nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
 230{
 231        return -EINVAL;
 232}
 233
 234int
 235nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 236{
 237        struct drm_nouveau_channel_alloc *init = data;
 238        struct nouveau_cli *cli = nouveau_cli(file_priv);
 239        struct nouveau_drm *drm = nouveau_drm(dev);
 240        struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 241        struct nouveau_abi16_chan *chan;
 242        struct nvif_device *device;
 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        device = &abi16->device;
 252
 253        /* hack to allow channel engine type specification on kepler */
 254        if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
 255                if (init->fb_ctxdma_handle != ~0)
 256                        init->fb_ctxdma_handle = KEPLER_CHANNEL_GPFIFO_A_V0_ENGINE_GR;
 257                else
 258                        init->fb_ctxdma_handle = init->tt_ctxdma_handle;
 259
 260                /* allow flips to be executed if this is a graphics channel */
 261                init->tt_ctxdma_handle = 0;
 262                if (init->fb_ctxdma_handle == KEPLER_CHANNEL_GPFIFO_A_V0_ENGINE_GR)
 263                        init->tt_ctxdma_handle = 1;
 264        }
 265
 266        if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
 267                return nouveau_abi16_put(abi16, -EINVAL);
 268
 269        /* allocate "abi16 channel" data and make up a handle for it */
 270        init->channel = __ffs64(~abi16->handles);
 271        if (~abi16->handles == 0)
 272                return nouveau_abi16_put(abi16, -ENOSPC);
 273
 274        chan = kzalloc(sizeof(*chan), GFP_KERNEL);
 275        if (!chan)
 276                return nouveau_abi16_put(abi16, -ENOMEM);
 277
 278        INIT_LIST_HEAD(&chan->notifiers);
 279        list_add(&chan->head, &abi16->channels);
 280        abi16->handles |= (1ULL << init->channel);
 281
 282        /* create channel object and initialise dma and fence management */
 283        ret = nouveau_channel_new(drm, device,
 284                                  NOUVEAU_ABI16_CHAN(init->channel),
 285                                  init->fb_ctxdma_handle,
 286                                  init->tt_ctxdma_handle, &chan->chan);
 287        if (ret)
 288                goto done;
 289
 290        if (device->info.family >= NV_DEVICE_INFO_V0_TESLA)
 291                init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 292                                        NOUVEAU_GEM_DOMAIN_GART;
 293        else
 294        if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
 295                init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
 296        else
 297                init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
 298
 299        if (device->info.family < NV_DEVICE_INFO_V0_CELSIUS) {
 300                init->subchan[0].handle = 0x00000000;
 301                init->subchan[0].grclass = 0x0000;
 302                init->subchan[1].handle = chan->chan->nvsw.handle;
 303                init->subchan[1].grclass = 0x506e;
 304                init->nr_subchan = 2;
 305        }
 306
 307        /* Named memory object area */
 308        ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
 309                              0, 0, &chan->ntfy);
 310        if (ret == 0)
 311                ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT);
 312        if (ret)
 313                goto done;
 314
 315        if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
 316                ret = nouveau_bo_vma_add(chan->ntfy, cli->vm,
 317                                        &chan->ntfy_vma);
 318                if (ret)
 319                        goto done;
 320        }
 321
 322        ret = drm_gem_handle_create(file_priv, &chan->ntfy->gem,
 323                                    &init->notifier_handle);
 324        if (ret)
 325                goto done;
 326
 327        ret = nouveau_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
 328done:
 329        if (ret)
 330                nouveau_abi16_chan_fini(abi16, chan);
 331        return nouveau_abi16_put(abi16, ret);
 332}
 333
 334static struct nouveau_abi16_chan *
 335nouveau_abi16_chan(struct nouveau_abi16 *abi16, int channel)
 336{
 337        struct nouveau_abi16_chan *chan;
 338
 339        list_for_each_entry(chan, &abi16->channels, head) {
 340                if (chan->chan->object->handle == NOUVEAU_ABI16_CHAN(channel))
 341                        return chan;
 342        }
 343
 344        return NULL;
 345}
 346
 347int
 348nouveau_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
 354        if (unlikely(!abi16))
 355                return -ENOMEM;
 356
 357        chan = nouveau_abi16_chan(abi16, req->channel);
 358        if (!chan)
 359                return nouveau_abi16_put(abi16, -ENOENT);
 360        nouveau_abi16_chan_fini(abi16, chan);
 361        return nouveau_abi16_put(abi16, 0);
 362}
 363
 364int
 365nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
 366{
 367        struct drm_nouveau_grobj_alloc *init = data;
 368        struct {
 369                struct nvif_ioctl_v0 ioctl;
 370                struct nvif_ioctl_new_v0 new;
 371        } args = {
 372                .ioctl.owner = NVIF_IOCTL_V0_OWNER_ANY,
 373                .ioctl.type = NVIF_IOCTL_V0_NEW,
 374                .ioctl.path_nr = 3,
 375                .ioctl.path[2] = NOUVEAU_ABI16_CLIENT,
 376                .ioctl.path[1] = NOUVEAU_ABI16_DEVICE,
 377                .ioctl.path[0] = NOUVEAU_ABI16_CHAN(init->channel),
 378                .new.route = NVDRM_OBJECT_ABI16,
 379                .new.handle = init->handle,
 380                .new.oclass = init->class,
 381        };
 382        struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 383        struct nouveau_drm *drm = nouveau_drm(dev);
 384        struct nvif_client *client;
 385        int ret;
 386
 387        if (unlikely(!abi16))
 388                return -ENOMEM;
 389
 390        if (init->handle == ~0)
 391                return nouveau_abi16_put(abi16, -EINVAL);
 392        client = nvif_client(nvif_object(&abi16->device));
 393
 394        /* compatibility with userspace that assumes 506e for all chipsets */
 395        if (init->class == 0x506e) {
 396                init->class = nouveau_abi16_swclass(drm);
 397                if (init->class == 0x906e)
 398                        return nouveau_abi16_put(abi16, 0);
 399        }
 400
 401        ret = nvif_client_ioctl(client, &args, sizeof(args));
 402        return nouveau_abi16_put(abi16, ret);
 403}
 404
 405int
 406nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 407{
 408        struct drm_nouveau_notifierobj_alloc *info = data;
 409        struct {
 410                struct nvif_ioctl_v0 ioctl;
 411                struct nvif_ioctl_new_v0 new;
 412                struct nv_dma_v0 ctxdma;
 413        } args = {
 414                .ioctl.owner = NVIF_IOCTL_V0_OWNER_ANY,
 415                .ioctl.type = NVIF_IOCTL_V0_NEW,
 416                .ioctl.path_nr = 3,
 417                .ioctl.path[2] = NOUVEAU_ABI16_CLIENT,
 418                .ioctl.path[1] = NOUVEAU_ABI16_DEVICE,
 419                .ioctl.path[0] = NOUVEAU_ABI16_CHAN(info->channel),
 420                .new.route = NVDRM_OBJECT_ABI16,
 421                .new.handle = info->handle,
 422                .new.oclass = NV_DMA_IN_MEMORY,
 423        };
 424        struct nouveau_drm *drm = nouveau_drm(dev);
 425        struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 426        struct nouveau_abi16_chan *chan;
 427        struct nouveau_abi16_ntfy *ntfy;
 428        struct nvif_device *device = &abi16->device;
 429        struct nvif_client *client;
 430        int ret;
 431
 432        if (unlikely(!abi16))
 433                return -ENOMEM;
 434
 435        /* completely unnecessary for these chipsets... */
 436        if (unlikely(device->info.family >= NV_DEVICE_INFO_V0_FERMI))
 437                return nouveau_abi16_put(abi16, -EINVAL);
 438        client = nvif_client(nvif_object(&abi16->device));
 439
 440        chan = nouveau_abi16_chan(abi16, info->channel);
 441        if (!chan)
 442                return nouveau_abi16_put(abi16, -ENOENT);
 443
 444        ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 445        if (!ntfy)
 446                return nouveau_abi16_put(abi16, -ENOMEM);
 447
 448        list_add(&ntfy->head, &chan->notifiers);
 449        ntfy->handle = info->handle;
 450
 451        ret = nouveau_mm_head(&chan->heap, 0, 1, info->size, info->size, 1,
 452                              &ntfy->node);
 453        if (ret)
 454                goto done;
 455
 456        args.ctxdma.start = ntfy->node->offset;
 457        args.ctxdma.limit = ntfy->node->offset + ntfy->node->length - 1;
 458        if (device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
 459                args.ctxdma.target = NV_DMA_V0_TARGET_VM;
 460                args.ctxdma.access = NV_DMA_V0_ACCESS_VM;
 461                args.ctxdma.start += chan->ntfy_vma.offset;
 462                args.ctxdma.limit += chan->ntfy_vma.offset;
 463        } else
 464        if (drm->agp.stat == ENABLED) {
 465                args.ctxdma.target = NV_DMA_V0_TARGET_AGP;
 466                args.ctxdma.access = NV_DMA_V0_ACCESS_RDWR;
 467                args.ctxdma.start += drm->agp.base + chan->ntfy->bo.offset;
 468                args.ctxdma.limit += drm->agp.base + chan->ntfy->bo.offset;
 469                client->super = true;
 470        } else {
 471                args.ctxdma.target = NV_DMA_V0_TARGET_VM;
 472                args.ctxdma.access = NV_DMA_V0_ACCESS_RDWR;
 473                args.ctxdma.start += chan->ntfy->bo.offset;
 474                args.ctxdma.limit += chan->ntfy->bo.offset;
 475        }
 476
 477        ret = nvif_client_ioctl(client, &args, sizeof(args));
 478        client->super = false;
 479        if (ret)
 480                goto done;
 481
 482        info->offset = ntfy->node->offset;
 483
 484done:
 485        if (ret)
 486                nouveau_abi16_ntfy_fini(chan, ntfy);
 487        return nouveau_abi16_put(abi16, ret);
 488}
 489
 490int
 491nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
 492{
 493        struct drm_nouveau_gpuobj_free *fini = data;
 494        struct {
 495                struct nvif_ioctl_v0 ioctl;
 496                struct nvif_ioctl_del del;
 497        } args = {
 498                .ioctl.owner = NVDRM_OBJECT_ABI16,
 499                .ioctl.type = NVIF_IOCTL_V0_DEL,
 500                .ioctl.path_nr = 4,
 501                .ioctl.path[3] = NOUVEAU_ABI16_CLIENT,
 502                .ioctl.path[2] = NOUVEAU_ABI16_DEVICE,
 503                .ioctl.path[1] = NOUVEAU_ABI16_CHAN(fini->channel),
 504                .ioctl.path[0] = fini->handle,
 505        };
 506        struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 507        struct nouveau_abi16_chan *chan;
 508        struct nouveau_abi16_ntfy *ntfy;
 509        struct nvif_client *client;
 510        int ret;
 511
 512        if (unlikely(!abi16))
 513                return -ENOMEM;
 514
 515        chan = nouveau_abi16_chan(abi16, fini->channel);
 516        if (!chan)
 517                return nouveau_abi16_put(abi16, -ENOENT);
 518        client = nvif_client(nvif_object(&abi16->device));
 519
 520        /* synchronize with the user channel and destroy the gpu object */
 521        nouveau_channel_idle(chan->chan);
 522
 523        ret = nvif_client_ioctl(client, &args, sizeof(args));
 524        if (ret)
 525                return nouveau_abi16_put(abi16, ret);
 526
 527        /* cleanup extra state if this object was a notifier */
 528        list_for_each_entry(ntfy, &chan->notifiers, head) {
 529                if (ntfy->handle == fini->handle) {
 530                        nouveau_mm_free(&chan->heap, &ntfy->node);
 531                        list_del(&ntfy->head);
 532                        break;
 533                }
 534        }
 535
 536        return nouveau_abi16_put(abi16, 0);
 537}
 538