drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.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  * Authors: Ben Skeggs
  23  */
  24
  25 #include <core/client.h>
  26 #include <core/handle.h>
  27 #include <core/namedb.h>
  28 #include <core/gpuobj.h>
  29 #include <core/engctx.h>
  30 #include <core/event.h>
  31 #include <nvif/unpack.h>
  32 #include <nvif/class.h>
  33 #include <core/enum.h>
  34
  35 #include <subdev/timer.h>
  36 #include <subdev/bar.h>
  37 #include <subdev/fb.h>
  38 #include <subdev/vm.h>
  39
  40 #include <engine/dmaobj.h>
  41 #include <engine/fifo.h>
  42
  43 struct nvc0_fifo_priv {
  44         struct nouveau_fifo base;
  45
  46         struct work_struct fault;
  47         u64 mask;
  48
  49         struct {
  50                 struct nouveau_gpuobj *mem[2];
  51                 int active;
  52                 wait_queue_head_t wait;
  53         } runlist;
  54
  55         struct {
  56                 struct nouveau_gpuobj *mem;
  57                 struct nouveau_vma bar;
  58         } user;
  59         int spoon_nr;
  60 };
  61
  62 struct nvc0_fifo_base {
  63         struct nouveau_fifo_base base;
  64         struct nouveau_gpuobj *pgd;
  65         struct nouveau_vm *vm;
  66 };
  67
  68 struct nvc0_fifo_chan {
  69         struct nouveau_fifo_chan base;
  70         enum {
  71                 STOPPED,
  72                 RUNNING,
  73                 KILLED
  74         } state;
  75 };
  76
  77 /*******************************************************************************
  78  * FIFO channel objects
  79  ******************************************************************************/
  80
  81 static void
  82 nvc0_fifo_runlist_update(struct nvc0_fifo_priv *priv)
  83 {
  84         struct nouveau_bar *bar = nouveau_bar(priv);
  85         struct nouveau_gpuobj *cur;
  86         int i, p;
  87
  88         mutex_lock(&nv_subdev(priv)->mutex);
  89         cur = priv->runlist.mem[priv->runlist.active];
  90         priv->runlist.active = !priv->runlist.active;
  91
  92         for (i = 0, p = 0; i < 128; i++) {
  93                 struct nvc0_fifo_chan *chan = (void *)priv->base.channel[i];
  94                 if (chan && chan->state == RUNNING) {
  95                         nv_wo32(cur, p + 0, i);
  96                         nv_wo32(cur, p + 4, 0x00000004);
  97                         p += 8;
  98                 }
  99         }
 100         bar->flush(bar);
 101
 102         nv_wr32(priv, 0x002270, cur->addr >> 12);
 103         nv_wr32(priv, 0x002274, 0x01f00000 | (p >> 3));
 104
 105         if (wait_event_timeout(priv->runlist.wait,
 106                                !(nv_rd32(priv, 0x00227c) & 0x00100000),
 107                                msecs_to_jiffies(2000)) == 0)
 108                 nv_error(priv, "runlist update timeout\n");
 109         mutex_unlock(&nv_subdev(priv)->mutex);
 110 }
 111
 112 static int
 113 nvc0_fifo_context_attach(struct nouveau_object *parent,
 114                          struct nouveau_object *object)
 115 {
 116         struct nouveau_bar *bar = nouveau_bar(parent);
 117         struct nvc0_fifo_base *base = (void *)parent->parent;
 118         struct nouveau_engctx *ectx = (void *)object;
 119         u32 addr;
 120         int ret;
 121
 122         switch (nv_engidx(object->engine)) {
 123         case NVDEV_ENGINE_SW   : return 0;
 124         case NVDEV_ENGINE_GR   : addr = 0x0210; break;
 125         case NVDEV_ENGINE_COPY0: addr = 0x0230; break;
 126         case NVDEV_ENGINE_COPY1: addr = 0x0240; break;
 127         case NVDEV_ENGINE_BSP  : addr = 0x0270; break;
 128         case NVDEV_ENGINE_VP   : addr = 0x0250; break;
 129         case NVDEV_ENGINE_PPP  : addr = 0x0260; break;
 130         default:
 131                 return -EINVAL;
 132         }
 133
 134         if (!ectx->vma.node) {
 135                 ret = nouveau_gpuobj_map_vm(nv_gpuobj(ectx), base->vm,
 136                                             NV_MEM_ACCESS_RW, &ectx->vma);
 137                 if (ret)
 138                         return ret;
 139
 140                 nv_engctx(ectx)->addr = nv_gpuobj(base)->addr >> 12;
 141         }
 142
 143         nv_wo32(base, addr + 0x00, lower_32_bits(ectx->vma.offset) | 4);
 144         nv_wo32(base, addr + 0x04, upper_32_bits(ectx->vma.offset));
 145         bar->flush(bar);
 146         return 0;
 147 }
 148
 149 static int
 150 nvc0_fifo_context_detach(struct nouveau_object *parent, bool suspend,
 151                          struct nouveau_object *object)
 152 {
 153         struct nouveau_bar *bar = nouveau_bar(parent);
 154         struct nvc0_fifo_priv *priv = (void *)parent->engine;
 155         struct nvc0_fifo_base *base = (void *)parent->parent;
 156         struct nvc0_fifo_chan *chan = (void *)parent;
 157         u32 addr;
 158
 159         switch (nv_engidx(object->engine)) {
 160         case NVDEV_ENGINE_SW   : return 0;
 161         case NVDEV_ENGINE_GR   : addr = 0x0210; break;
 162         case NVDEV_ENGINE_COPY0: addr = 0x0230; break;
 163         case NVDEV_ENGINE_COPY1: addr = 0x0240; break;
 164         case NVDEV_ENGINE_BSP  : addr = 0x0270; break;
 165         case NVDEV_ENGINE_VP   : addr = 0x0250; break;
 166         case NVDEV_ENGINE_PPP  : addr = 0x0260; break;
 167         default:
 168                 return -EINVAL;
 169         }
 170
 171         nv_wr32(priv, 0x002634, chan->base.chid);
 172         if (!nv_wait(priv, 0x002634, 0xffffffff, chan->base.chid)) {
 173                 nv_error(priv, "channel %d [%s] kick timeout\n",
 174                          chan->base.chid, nouveau_client_name(chan));
 175                 if (suspend)
 176                         return -EBUSY;
 177         }
 178
 179         nv_wo32(base, addr + 0x00, 0x00000000);
 180         nv_wo32(base, addr + 0x04, 0x00000000);
 181         bar->flush(bar);
 182         return 0;
 183 }
 184
 185 static int
 186 nvc0_fifo_chan_ctor(struct nouveau_object *parent,
 187                     struct nouveau_object *engine,
 188                     struct nouveau_oclass *oclass, void *data, u32 size,
 189                     struct nouveau_object **pobject)
 190 {
 191         union {
 192                 struct nv50_channel_gpfifo_v0 v0;
 193         } *args = data;
 194         struct nouveau_bar *bar = nouveau_bar(parent);
 195         struct nvc0_fifo_priv *priv = (void *)engine;
 196         struct nvc0_fifo_base *base = (void *)parent;
 197         struct nvc0_fifo_chan *chan;
 198         u64 usermem, ioffset, ilength;
 199         int ret, i;
 200
 201         nv_ioctl(parent, "create channel gpfifo size %d\n", size);
 202         if (nvif_unpack(args->v0, 0, 0, false)) {
 203                 nv_ioctl(parent, "create channel gpfifo vers %d pushbuf %08x "
 204                                  "ioffset %016llx ilength %08x\n",
 205                          args->v0.version, args->v0.pushbuf, args->v0.ioffset,
 206                          args->v0.ilength);
 207         } else
 208                 return ret;
 209
 210         ret = nouveau_fifo_channel_create(parent, engine, oclass, 1,
 211                                           priv->user.bar.offset, 0x1000,
 212                                           args->v0.pushbuf,
 213                                           (1ULL << NVDEV_ENGINE_SW) |
 214                                           (1ULL << NVDEV_ENGINE_GR) |
 215                                           (1ULL << NVDEV_ENGINE_COPY0) |
 216                                           (1ULL << NVDEV_ENGINE_COPY1) |
 217                                           (1ULL << NVDEV_ENGINE_BSP) |
 218                                           (1ULL << NVDEV_ENGINE_VP) |
 219                                           (1ULL << NVDEV_ENGINE_PPP), &chan);
 220         *pobject = nv_object(chan);
 221         if (ret)
 222                 return ret;
 223
 224         args->v0.chid = chan->base.chid;
 225
 226         nv_parent(chan)->context_attach = nvc0_fifo_context_attach;
 227         nv_parent(chan)->context_detach = nvc0_fifo_context_detach;
 228
 229         usermem = chan->base.chid * 0x1000;
 230         ioffset = args->v0.ioffset;
 231         ilength = order_base_2(args->v0.ilength / 8);
 232
 233         for (i = 0; i < 0x1000; i += 4)
 234                 nv_wo32(priv->user.mem, usermem + i, 0x00000000);
 235
 236         nv_wo32(base, 0x08, lower_32_bits(priv->user.mem->addr + usermem));
 237         nv_wo32(base, 0x0c, upper_32_bits(priv->user.mem->addr + usermem));
 238         nv_wo32(base, 0x10, 0x0000face);
 239         nv_wo32(base, 0x30, 0xfffff902);
 240         nv_wo32(base, 0x48, lower_32_bits(ioffset));
 241         nv_wo32(base, 0x4c, upper_32_bits(ioffset) | (ilength << 16));
 242         nv_wo32(base, 0x54, 0x00000002);
 243         nv_wo32(base, 0x84, 0x20400000);
 244         nv_wo32(base, 0x94, 0x30000001);
 245         nv_wo32(base, 0x9c, 0x00000100);
 246         nv_wo32(base, 0xa4, 0x1f1f1f1f);
 247         nv_wo32(base, 0xa8, 0x1f1f1f1f);
 248         nv_wo32(base, 0xac, 0x0000001f);
 249         nv_wo32(base, 0xb8, 0xf8000000);
 250         nv_wo32(base, 0xf8, 0x10003080); /* 0x002310 */
 251         nv_wo32(base, 0xfc, 0x10000010); /* 0x002350 */
 252         bar->flush(bar);
 253         return 0;
 254 }
 255
 256 static int
 257 nvc0_fifo_chan_init(struct nouveau_object *object)
 258 {
 259         struct nouveau_gpuobj *base = nv_gpuobj(object->parent);
 260         struct nvc0_fifo_priv *priv = (void *)object->engine;
 261         struct nvc0_fifo_chan *chan = (void *)object;
 262         u32 chid = chan->base.chid;
 263         int ret;
 264
 265         ret = nouveau_fifo_channel_init(&chan->base);
 266         if (ret)
 267                 return ret;
 268
 269         nv_wr32(priv, 0x003000 + (chid * 8), 0xc0000000 | base->addr >> 12);
 270
 271         if (chan->state == STOPPED && (chan->state = RUNNING) == RUNNING) {
 272                 nv_wr32(priv, 0x003004 + (chid * 8), 0x001f0001);
 273                 nvc0_fifo_runlist_update(priv);
 274         }
 275
 276         return 0;
 277 }
 278
 279 static void nvc0_fifo_intr_engine(struct nvc0_fifo_priv *priv);
 280
 281 static int
 282 nvc0_fifo_chan_fini(struct nouveau_object *object, bool suspend)
 283 {
 284         struct nvc0_fifo_priv *priv = (void *)object->engine;
 285         struct nvc0_fifo_chan *chan = (void *)object;
 286         u32 chid = chan->base.chid;
 287
 288         if (chan->state == RUNNING && (chan->state = STOPPED) == STOPPED) {
 289                 nv_mask(priv, 0x003004 + (chid * 8), 0x00000001, 0x00000000);
 290                 nvc0_fifo_runlist_update(priv);
 291         }
 292
 293         nvc0_fifo_intr_engine(priv);
 294
 295         nv_wr32(priv, 0x003000 + (chid * 8), 0x00000000);
 296         return nouveau_fifo_channel_fini(&chan->base, suspend);
 297 }
 298
 299 static struct nouveau_ofuncs
 300 nvc0_fifo_ofuncs = {
 301         .ctor = nvc0_fifo_chan_ctor,
 302         .dtor = _nouveau_fifo_channel_dtor,
 303         .init = nvc0_fifo_chan_init,
 304         .fini = nvc0_fifo_chan_fini,
 305         .map  = _nouveau_fifo_channel_map,
 306         .rd32 = _nouveau_fifo_channel_rd32,
 307         .wr32 = _nouveau_fifo_channel_wr32,
 308         .ntfy = _nouveau_fifo_channel_ntfy
 309 };
 310
 311 static struct nouveau_oclass
 312 nvc0_fifo_sclass[] = {
 313         { FERMI_CHANNEL_GPFIFO, &nvc0_fifo_ofuncs },
 314         {}
 315 };
 316
 317 /*******************************************************************************
 318  * FIFO context - instmem heap and vm setup
 319  ******************************************************************************/
 320
 321 static int
 322 nvc0_fifo_context_ctor(struct nouveau_object *parent,
 323                        struct nouveau_object *engine,
 324                        struct nouveau_oclass *oclass, void *data, u32 size,
 325                        struct nouveau_object **pobject)
 326 {
 327         struct nvc0_fifo_base *base;
 328         int ret;
 329
 330         ret = nouveau_fifo_context_create(parent, engine, oclass, NULL, 0x1000,
 331                                           0x1000, NVOBJ_FLAG_ZERO_ALLOC |
 332                                           NVOBJ_FLAG_HEAP, &base);
 333         *pobject = nv_object(base);
 334         if (ret)
 335                 return ret;
 336
 337         ret = nouveau_gpuobj_new(nv_object(base), NULL, 0x10000, 0x1000, 0,
 338                                 &base->pgd);
 339         if (ret)
 340                 return ret;
 341
 342         nv_wo32(base, 0x0200, lower_32_bits(base->pgd->addr));
 343         nv_wo32(base, 0x0204, upper_32_bits(base->pgd->addr));
 344         nv_wo32(base, 0x0208, 0xffffffff);
 345         nv_wo32(base, 0x020c, 0x000000ff);
 346
 347         ret = nouveau_vm_ref(nouveau_client(parent)->vm, &base->vm, base->pgd);
 348         if (ret)
 349                 return ret;
 350
 351         return 0;
 352 }
 353
 354 static void
 355 nvc0_fifo_context_dtor(struct nouveau_object *object)
 356 {
 357         struct nvc0_fifo_base *base = (void *)object;
 358         nouveau_vm_ref(NULL, &base->vm, base->pgd);
 359         nouveau_gpuobj_ref(NULL, &base->pgd);
 360         nouveau_fifo_context_destroy(&base->base);
 361 }
 362
 363 static struct nouveau_oclass
 364 nvc0_fifo_cclass = {
 365         .handle = NV_ENGCTX(FIFO, 0xc0),
 366         .ofuncs = &(struct nouveau_ofuncs) {
 367                 .ctor = nvc0_fifo_context_ctor,
 368                 .dtor = nvc0_fifo_context_dtor,
 369                 .init = _nouveau_fifo_context_init,
 370                 .fini = _nouveau_fifo_context_fini,
 371                 .rd32 = _nouveau_fifo_context_rd32,
 372                 .wr32 = _nouveau_fifo_context_wr32,
 373         },
 374 };
 375
 376 /*******************************************************************************
 377  * PFIFO engine
 378  ******************************************************************************/
 379
 380 static inline int
 381 nvc0_fifo_engidx(struct nvc0_fifo_priv *priv, u32 engn)
 382 {
 383         switch (engn) {
 384         case NVDEV_ENGINE_GR   : engn = 0; break;
 385         case NVDEV_ENGINE_BSP  : engn = 1; break;
 386         case NVDEV_ENGINE_PPP  : engn = 2; break;
 387         case NVDEV_ENGINE_VP   : engn = 3; break;
 388         case NVDEV_ENGINE_COPY0: engn = 4; break;
 389         case NVDEV_ENGINE_COPY1: engn = 5; break;
 390         default:
 391                 return -1;
 392         }
 393
 394         return engn;
 395 }
 396
 397 static inline struct nouveau_engine *
 398 nvc0_fifo_engine(struct nvc0_fifo_priv *priv, u32 engn)
 399 {
 400         switch (engn) {
 401         case 0: engn = NVDEV_ENGINE_GR; break;
 402         case 1: engn = NVDEV_ENGINE_BSP; break;
 403         case 2: engn = NVDEV_ENGINE_PPP; break;
 404         case 3: engn = NVDEV_ENGINE_VP; break;
 405         case 4: engn = NVDEV_ENGINE_COPY0; break;
 406         case 5: engn = NVDEV_ENGINE_COPY1; break;
 407         default:
 408                 return NULL;
 409         }
 410
 411         return nouveau_engine(priv, engn);
 412 }
 413
 414 static void
 415 nvc0_fifo_recover_work(struct work_struct *work)
 416 {
 417         struct nvc0_fifo_priv *priv = container_of(work, typeof(*priv), fault);
 418         struct nouveau_object *engine;
 419         unsigned long flags;
 420         u32 engn, engm = 0;
 421         u64 mask, todo;
 422
 423         spin_lock_irqsave(&priv->base.lock, flags);
 424         mask = priv->mask;
 425         priv->mask = 0ULL;
 426         spin_unlock_irqrestore(&priv->base.lock, flags);
 427
 428         for (todo = mask; engn = __ffs64(todo), todo; todo &= ~(1 << engn))
 429                 engm |= 1 << nvc0_fifo_engidx(priv, engn);
 430         nv_mask(priv, 0x002630, engm, engm);
 431
 432         for (todo = mask; engn = __ffs64(todo), todo; todo &= ~(1 << engn)) {
 433                 if ((engine = (void *)nouveau_engine(priv, engn))) {
 434                         nv_ofuncs(engine)->fini(engine, false);
 435                         WARN_ON(nv_ofuncs(engine)->init(engine));
 436                 }
 437         }
 438
 439         nvc0_fifo_runlist_update(priv);
 440         nv_wr32(priv, 0x00262c, engm);
 441         nv_mask(priv, 0x002630, engm, 0x00000000);
 442 }
 443
 444 static void
 445 nvc0_fifo_recover(struct nvc0_fifo_priv *priv, struct nouveau_engine *engine,
 446                   struct nvc0_fifo_chan *chan)
 447 {
 448         struct nouveau_object *engobj = nv_object(engine);
 449         u32 chid = chan->base.chid;
 450         unsigned long flags;
 451
 452         nv_error(priv, "%s engine fault on channel %d, recovering...\n",
 453                        nv_subdev(engine)->name, chid);
 454
 455         nv_mask(priv, 0x003004 + (chid * 0x08), 0x00000001, 0x00000000);
 456         chan->state = KILLED;
 457
 458         spin_lock_irqsave(&priv->base.lock, flags);
 459         priv->mask |= 1ULL << nv_engidx(engobj);
 460         spin_unlock_irqrestore(&priv->base.lock, flags);
 461         schedule_work(&priv->fault);
 462 }
 463
 464 static int
 465 nvc0_fifo_swmthd(struct nvc0_fifo_priv *priv, u32 chid, u32 mthd, u32 data)
 466 {
 467         struct nvc0_fifo_chan *chan = NULL;
 468         struct nouveau_handle *bind;
 469         unsigned long flags;
 470         int ret = -EINVAL;
 471
 472         spin_lock_irqsave(&priv->base.lock, flags);
 473         if (likely(chid >= priv->base.min && chid <= priv->base.max))
 474                 chan = (void *)priv->base.channel[chid];
 475         if (unlikely(!chan))
 476                 goto out;
 477
 478         bind = nouveau_namedb_get_class(nv_namedb(chan), 0x906e);
 479         if (likely(bind)) {
 480                 if (!mthd || !nv_call(bind->object, mthd, data))
 481                         ret = 0;
 482                 nouveau_namedb_put(bind);
 483         }
 484
 485 out:
 486         spin_unlock_irqrestore(&priv->base.lock, flags);
 487         return ret;
 488 }
 489
 490 static const struct nouveau_enum
 491 nvc0_fifo_sched_reason[] = {
 492         { 0x0a, "CTXSW_TIMEOUT" },
 493         {}
 494 };
 495
 496 static void
 497 nvc0_fifo_intr_sched_ctxsw(struct nvc0_fifo_priv *priv)
 498 {
 499         struct nouveau_engine *engine;
 500         struct nvc0_fifo_chan *chan;
 501         u32 engn;
 502
 503         for (engn = 0; engn < 6; engn++) {
 504                 u32 stat = nv_rd32(priv, 0x002640 + (engn * 0x04));
 505                 u32 busy = (stat & 0x80000000);
 506                 u32 save = (stat & 0x00100000); /* maybe? */
 507                 u32 unk0 = (stat & 0x00040000);
 508                 u32 unk1 = (stat & 0x00001000);
 509                 u32 chid = (stat & 0x0000007f);
 510                 (void)save;
 511
 512                 if (busy && unk0 && unk1) {
 513                         if (!(chan = (void *)priv->base.channel[chid]))
 514                                 continue;
 515                         if (!(engine = nvc0_fifo_engine(priv, engn)))
 516                                 continue;
 517                         nvc0_fifo_recover(priv, engine, chan);
 518                 }
 519         }
 520 }
 521
 522 static void
 523 nvc0_fifo_intr_sched(struct nvc0_fifo_priv *priv)
 524 {
 525         u32 intr = nv_rd32(priv, 0x00254c);
 526         u32 code = intr & 0x000000ff;
 527         const struct nouveau_enum *en;
 528         char enunk[6] = "";
 529
 530         en = nouveau_enum_find(nvc0_fifo_sched_reason, code);
 531         if (!en)
 532                 snprintf(enunk, sizeof(enunk), "UNK%02x", code);
 533
 534         nv_error(priv, "SCHED_ERROR [ %s ]\n", en ? en->name : enunk);
 535
 536         switch (code) {
 537         case 0x0a:
 538                 nvc0_fifo_intr_sched_ctxsw(priv);
 539                 break;
 540         default:
 541                 break;
 542         }
 543 }
 544
 545 static const struct nouveau_enum
 546 nvc0_fifo_fault_engine[] = {
 547         { 0x00, "PGRAPH", NULL, NVDEV_ENGINE_GR },
 548         { 0x03, "PEEPHOLE", NULL, NVDEV_ENGINE_IFB },
 549         { 0x04, "BAR1", NULL, NVDEV_SUBDEV_BAR },
 550         { 0x05, "BAR3", NULL, NVDEV_SUBDEV_INSTMEM },
 551         { 0x07, "PFIFO", NULL, NVDEV_ENGINE_FIFO },
 552         { 0x10, "PBSP", NULL, NVDEV_ENGINE_BSP },
 553         { 0x11, "PPPP", NULL, NVDEV_ENGINE_PPP },
 554         { 0x13, "PCOUNTER" },
 555         { 0x14, "PVP", NULL, NVDEV_ENGINE_VP },
 556         { 0x15, "PCOPY0", NULL, NVDEV_ENGINE_COPY0 },
 557         { 0x16, "PCOPY1", NULL, NVDEV_ENGINE_COPY1 },
 558         { 0x17, "PDAEMON" },
 559         {}
 560 };
 561
 562 static const struct nouveau_enum
 563 nvc0_fifo_fault_reason[] = {
 564         { 0x00, "PT_NOT_PRESENT" },
 565         { 0x01, "PT_TOO_SHORT" },
 566         { 0x02, "PAGE_NOT_PRESENT" },
 567         { 0x03, "VM_LIMIT_EXCEEDED" },
 568         { 0x04, "NO_CHANNEL" },
 569         { 0x05, "PAGE_SYSTEM_ONLY" },
 570         { 0x06, "PAGE_READ_ONLY" },
 571         { 0x0a, "COMPRESSED_SYSRAM" },
 572         { 0x0c, "INVALID_STORAGE_TYPE" },
 573         {}
 574 };
 575
 576 static const struct nouveau_enum
 577 nvc0_fifo_fault_hubclient[] = {
 578         { 0x01, "PCOPY0" },
 579         { 0x02, "PCOPY1" },
 580         { 0x04, "DISPATCH" },
 581         { 0x05, "CTXCTL" },
 582         { 0x06, "PFIFO" },
 583         { 0x07, "BAR_READ" },
 584         { 0x08, "BAR_WRITE" },
 585         { 0x0b, "PVP" },
 586         { 0x0c, "PPPP" },
 587         { 0x0d, "PBSP" },
 588         { 0x11, "PCOUNTER" },
 589         { 0x12, "PDAEMON" },
 590         { 0x14, "CCACHE" },
 591         { 0x15, "CCACHE_POST" },
 592         {}
 593 };
 594
 595 static const struct nouveau_enum
 596 nvc0_fifo_fault_gpcclient[] = {
 597         { 0x01, "TEX" },
 598         { 0x0c, "ESETUP" },
 599         { 0x0e, "CTXCTL" },
 600         { 0x0f, "PROP" },
 601         {}
 602 };
 603
 604 static void
 605 nvc0_fifo_intr_fault(struct nvc0_fifo_priv *priv, int unit)
 606 {
 607         u32 inst = nv_rd32(priv, 0x002800 + (unit * 0x10));
 608         u32 valo = nv_rd32(priv, 0x002804 + (unit * 0x10));
 609         u32 vahi = nv_rd32(priv, 0x002808 + (unit * 0x10));
 610         u32 stat = nv_rd32(priv, 0x00280c + (unit * 0x10));
 611         u32 gpc    = (stat & 0x1f000000) >> 24;
 612         u32 client = (stat & 0x00001f00) >> 8;
 613         u32 write  = (stat & 0x00000080);
 614         u32 hub    = (stat & 0x00000040);
 615         u32 reason = (stat & 0x0000000f);
 616         struct nouveau_object *engctx = NULL, *object;
 617         struct nouveau_engine *engine = NULL;
 618         const struct nouveau_enum *er, *eu, *ec;
 619         char erunk[6] = "";
 620         char euunk[6] = "";
 621         char ecunk[6] = "";
 622         char gpcid[3] = "";
 623
 624         er = nouveau_enum_find(nvc0_fifo_fault_reason, reason);
 625         if (!er)
 626                 snprintf(erunk, sizeof(erunk), "UNK%02X", reason);
 627
 628         eu = nouveau_enum_find(nvc0_fifo_fault_engine, unit);
 629         if (eu) {
 630                 switch (eu->data2) {
 631                 case NVDEV_SUBDEV_BAR:
 632                         nv_mask(priv, 0x001704, 0x00000000, 0x00000000);
 633                         break;
 634                 case NVDEV_SUBDEV_INSTMEM:
 635                         nv_mask(priv, 0x001714, 0x00000000, 0x00000000);
 636                         break;
 637                 case NVDEV_ENGINE_IFB:
 638                         nv_mask(priv, 0x001718, 0x00000000, 0x00000000);
 639                         break;
 640                 default:
 641                         engine = nouveau_engine(priv, eu->data2);
 642                         if (engine)
 643                                 engctx = nouveau_engctx_get(engine, inst);
 644                         break;
 645                 }
 646         } else {
 647                 snprintf(euunk, sizeof(euunk), "UNK%02x", unit);
 648         }
 649
 650         if (hub) {
 651                 ec = nouveau_enum_find(nvc0_fifo_fault_hubclient, client);
 652         } else {
 653                 ec = nouveau_enum_find(nvc0_fifo_fault_gpcclient, client);
 654                 snprintf(gpcid, sizeof(gpcid), "%d", gpc);
 655         }
 656
 657         if (!ec)
 658                 snprintf(ecunk, sizeof(ecunk), "UNK%02x", client);
 659
 660         nv_error(priv, "%s fault at 0x%010llx [%s] from %s/%s%s%s%s on "
 661                        "channel 0x%010llx [%s]\n", write ? "write" : "read",
 662                  (u64)vahi << 32 | valo, er ? er->name : erunk,
 663                  eu ? eu->name : euunk, hub ? "" : "GPC", gpcid, hub ? "" : "/",
 664                  ec ? ec->name : ecunk, (u64)inst << 12,
 665                  nouveau_client_name(engctx));
 666
 667         object = engctx;
 668         while (object) {
 669                 switch (nv_mclass(object)) {
 670                 case FERMI_CHANNEL_GPFIFO:
 671                         nvc0_fifo_recover(priv, engine, (void *)object);
 672                         break;
 673                 }
 674                 object = object->parent;
 675         }
 676
 677         nouveau_engctx_put(engctx);
 678 }
 679
 680 static const struct nouveau_bitfield
 681 nvc0_fifo_pbdma_intr[] = {
 682 /*      { 0x00008000, "" }      seen with null ib push */
 683         { 0x00200000, "ILLEGAL_MTHD" },
 684         { 0x00800000, "EMPTY_SUBC" },
 685         {}
 686 };
 687
 688 static void
 689 nvc0_fifo_intr_pbdma(struct nvc0_fifo_priv *priv, int unit)
 690 {
 691         u32 stat = nv_rd32(priv, 0x040108 + (unit * 0x2000));
 692         u32 addr = nv_rd32(priv, 0x0400c0 + (unit * 0x2000));
 693         u32 data = nv_rd32(priv, 0x0400c4 + (unit * 0x2000));
 694         u32 chid = nv_rd32(priv, 0x040120 + (unit * 0x2000)) & 0x7f;
 695         u32 subc = (addr & 0x00070000) >> 16;
 696         u32 mthd = (addr & 0x00003ffc);
 697         u32 show = stat;
 698
 699         if (stat & 0x00800000) {
 700                 if (!nvc0_fifo_swmthd(priv, chid, mthd, data))
 701                         show &= ~0x00800000;
 702         }
 703
 704         if (show) {
 705                 nv_error(priv, "PBDMA%d:", unit);
 706                 nouveau_bitfield_print(nvc0_fifo_pbdma_intr, show);
 707                 pr_cont("\n");
 708                 nv_error(priv,
 709                          "PBDMA%d: ch %d [%s] subc %d mthd 0x%04x data 0x%08x\n",
 710                          unit, chid,
 711                          nouveau_client_name_for_fifo_chid(&priv->base, chid),
 712                          subc, mthd, data);
 713         }
 714
 715         nv_wr32(priv, 0x0400c0 + (unit * 0x2000), 0x80600008);
 716         nv_wr32(priv, 0x040108 + (unit * 0x2000), stat);
 717 }
 718
 719 static void
 720 nvc0_fifo_intr_runlist(struct nvc0_fifo_priv *priv)
 721 {
 722         u32 intr = nv_rd32(priv, 0x002a00);
 723
 724         if (intr & 0x10000000) {
 725                 wake_up(&priv->runlist.wait);
 726                 nv_wr32(priv, 0x002a00, 0x10000000);
 727                 intr &= ~0x10000000;
 728         }
 729
 730         if (intr) {
 731                 nv_error(priv, "RUNLIST 0x%08x\n", intr);
 732                 nv_wr32(priv, 0x002a00, intr);
 733         }
 734 }
 735
 736 static void
 737 nvc0_fifo_intr_engine_unit(struct nvc0_fifo_priv *priv, int engn)
 738 {
 739         u32 intr = nv_rd32(priv, 0x0025a8 + (engn * 0x04));
 740         u32 inte = nv_rd32(priv, 0x002628);
 741         u32 unkn;
 742
 743         nv_wr32(priv, 0x0025a8 + (engn * 0x04), intr);
 744
 745         for (unkn = 0; unkn < 8; unkn++) {
 746                 u32 ints = (intr >> (unkn * 0x04)) & inte;
 747                 if (ints & 0x1) {
 748                         nouveau_fifo_uevent(&priv->base);
 749                         ints &= ~1;
 750                 }
 751                 if (ints) {
 752                         nv_error(priv, "ENGINE %d %d %01x", engn, unkn, ints);
 753                         nv_mask(priv, 0x002628, ints, 0);
 754                 }
 755         }
 756 }
 757
 758 static void
 759 nvc0_fifo_intr_engine(struct nvc0_fifo_priv *priv)
 760 {
 761         u32 mask = nv_rd32(priv, 0x0025a4);
 762         while (mask) {
 763                 u32 unit = __ffs(mask);
 764                 nvc0_fifo_intr_engine_unit(priv, unit);
 765                 mask &= ~(1 << unit);
 766         }
 767 }
 768
 769 static void
 770 nvc0_fifo_intr(struct nouveau_subdev *subdev)
 771 {
 772         struct nvc0_fifo_priv *priv = (void *)subdev;
 773         u32 mask = nv_rd32(priv, 0x002140);
 774         u32 stat = nv_rd32(priv, 0x002100) & mask;
 775
 776         if (stat & 0x00000001) {
 777                 u32 intr = nv_rd32(priv, 0x00252c);
 778                 nv_warn(priv, "INTR 0x00000001: 0x%08x\n", intr);
 779                 nv_wr32(priv, 0x002100, 0x00000001);
 780                 stat &= ~0x00000001;
 781         }
 782
 783         if (stat & 0x00000100) {
 784                 nvc0_fifo_intr_sched(priv);
 785                 nv_wr32(priv, 0x002100, 0x00000100);
 786                 stat &= ~0x00000100;
 787         }
 788
 789         if (stat & 0x00010000) {
 790                 u32 intr = nv_rd32(priv, 0x00256c);
 791                 nv_warn(priv, "INTR 0x00010000: 0x%08x\n", intr);
 792                 nv_wr32(priv, 0x002100, 0x00010000);
 793                 stat &= ~0x00010000;
 794         }
 795
 796         if (stat & 0x01000000) {
 797                 u32 intr = nv_rd32(priv, 0x00258c);
 798                 nv_warn(priv, "INTR 0x01000000: 0x%08x\n", intr);
 799                 nv_wr32(priv, 0x002100, 0x01000000);
 800                 stat &= ~0x01000000;
 801         }
 802
 803         if (stat & 0x10000000) {
 804                 u32 mask = nv_rd32(priv, 0x00259c);
 805                 while (mask) {
 806                         u32 unit = __ffs(mask);
 807                         nvc0_fifo_intr_fault(priv, unit);
 808                         nv_wr32(priv, 0x00259c, (1 << unit));
 809                         mask &= ~(1 << unit);
 810                 }
 811                 stat &= ~0x10000000;
 812         }
 813
 814         if (stat & 0x20000000) {
 815                 u32 mask = nv_rd32(priv, 0x0025a0);
 816                 while (mask) {
 817                         u32 unit = __ffs(mask);
 818                         nvc0_fifo_intr_pbdma(priv, unit);
 819                         nv_wr32(priv, 0x0025a0, (1 << unit));
 820                         mask &= ~(1 << unit);
 821                 }
 822                 stat &= ~0x20000000;
 823         }
 824
 825         if (stat & 0x40000000) {
 826                 nvc0_fifo_intr_runlist(priv);
 827                 stat &= ~0x40000000;
 828         }
 829
 830         if (stat & 0x80000000) {
 831                 nvc0_fifo_intr_engine(priv);
 832                 stat &= ~0x80000000;
 833         }
 834
 835         if (stat) {
 836                 nv_error(priv, "INTR 0x%08x\n", stat);
 837                 nv_mask(priv, 0x002140, stat, 0x00000000);
 838                 nv_wr32(priv, 0x002100, stat);
 839         }
 840 }
 841
 842 static void
 843 nvc0_fifo_uevent_init(struct nvkm_event *event, int type, int index)
 844 {
 845         struct nouveau_fifo *fifo = container_of(event, typeof(*fifo), uevent);
 846         nv_mask(fifo, 0x002140, 0x80000000, 0x80000000);
 847 }
 848
 849 static void
 850 nvc0_fifo_uevent_fini(struct nvkm_event *event, int type, int index)
 851 {
 852         struct nouveau_fifo *fifo = container_of(event, typeof(*fifo), uevent);
 853         nv_mask(fifo, 0x002140, 0x80000000, 0x00000000);
 854 }
 855
 856 static const struct nvkm_event_func
 857 nvc0_fifo_uevent_func = {
 858         .ctor = nouveau_fifo_uevent_ctor,
 859         .init = nvc0_fifo_uevent_init,
 860         .fini = nvc0_fifo_uevent_fini,
 861 };
 862
 863 static int
 864 nvc0_fifo_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
 865                struct nouveau_oclass *oclass, void *data, u32 size,
 866                struct nouveau_object **pobject)
 867 {
 868         struct nvc0_fifo_priv *priv;
 869         int ret;
 870
 871         ret = nouveau_fifo_create(parent, engine, oclass, 0, 127, &priv);
 872         *pobject = nv_object(priv);
 873         if (ret)
 874                 return ret;
 875
 876         INIT_WORK(&priv->fault, nvc0_fifo_recover_work);
 877
 878         ret = nouveau_gpuobj_new(nv_object(priv), NULL, 0x1000, 0x1000, 0,
 879                                 &priv->runlist.mem[0]);
 880         if (ret)
 881                 return ret;
 882
 883         ret = nouveau_gpuobj_new(nv_object(priv), NULL, 0x1000, 0x1000, 0,
 884                                 &priv->runlist.mem[1]);
 885         if (ret)
 886                 return ret;
 887
 888         init_waitqueue_head(&priv->runlist.wait);
 889
 890         ret = nouveau_gpuobj_new(nv_object(priv), NULL, 128 * 0x1000, 0x1000, 0,
 891                                 &priv->user.mem);
 892         if (ret)
 893                 return ret;
 894
 895         ret = nouveau_gpuobj_map(priv->user.mem, NV_MEM_ACCESS_RW,
 896                                 &priv->user.bar);
 897         if (ret)
 898                 return ret;
 899
 900         ret = nvkm_event_init(&nvc0_fifo_uevent_func, 1, 1, &priv->base.uevent);
 901         if (ret)
 902                 return ret;
 903
 904         nv_subdev(priv)->unit = 0x00000100;
 905         nv_subdev(priv)->intr = nvc0_fifo_intr;
 906         nv_engine(priv)->cclass = &nvc0_fifo_cclass;
 907         nv_engine(priv)->sclass = nvc0_fifo_sclass;
 908         return 0;
 909 }
 910
 911 static void
 912 nvc0_fifo_dtor(struct nouveau_object *object)
 913 {
 914         struct nvc0_fifo_priv *priv = (void *)object;
 915
 916         nouveau_gpuobj_unmap(&priv->user.bar);
 917         nouveau_gpuobj_ref(NULL, &priv->user.mem);
 918         nouveau_gpuobj_ref(NULL, &priv->runlist.mem[0]);
 919         nouveau_gpuobj_ref(NULL, &priv->runlist.mem[1]);
 920
 921         nouveau_fifo_destroy(&priv->base);
 922 }
 923
 924 static int
 925 nvc0_fifo_init(struct nouveau_object *object)
 926 {
 927         struct nvc0_fifo_priv *priv = (void *)object;
 928         int ret, i;
 929
 930         ret = nouveau_fifo_init(&priv->base);
 931         if (ret)
 932                 return ret;
 933
 934         nv_wr32(priv, 0x000204, 0xffffffff);
 935         nv_wr32(priv, 0x002204, 0xffffffff);
 936
 937         priv->spoon_nr = hweight32(nv_rd32(priv, 0x002204));
 938         nv_debug(priv, "%d PBDMA unit(s)\n", priv->spoon_nr);
 939
 940         /* assign engines to PBDMAs */
 941         if (priv->spoon_nr >= 3) {
 942                 nv_wr32(priv, 0x002208, ~(1 << 0)); /* PGRAPH */
 943                 nv_wr32(priv, 0x00220c, ~(1 << 1)); /* PVP */
 944                 nv_wr32(priv, 0x002210, ~(1 << 1)); /* PPP */
 945                 nv_wr32(priv, 0x002214, ~(1 << 1)); /* PBSP */
 946                 nv_wr32(priv, 0x002218, ~(1 << 2)); /* PCE0 */
 947                 nv_wr32(priv, 0x00221c, ~(1 << 1)); /* PCE1 */
 948         }
 949
 950         /* PBDMA[n] */
 951         for (i = 0; i < priv->spoon_nr; i++) {
 952                 nv_mask(priv, 0x04013c + (i * 0x2000), 0x10000100, 0x00000000);
 953                 nv_wr32(priv, 0x040108 + (i * 0x2000), 0xffffffff); /* INTR */
 954                 nv_wr32(priv, 0x04010c + (i * 0x2000), 0xfffffeff); /* INTREN */
 955         }
 956
 957         nv_mask(priv, 0x002200, 0x00000001, 0x00000001);
 958         nv_wr32(priv, 0x002254, 0x10000000 | priv->user.bar.offset >> 12);
 959
 960         nv_wr32(priv, 0x002100, 0xffffffff);
 961         nv_wr32(priv, 0x002140, 0x7fffffff);
 962         nv_wr32(priv, 0x002628, 0x00000001); /* ENGINE_INTR_EN */
 963         return 0;
 964 }
 965
 966 struct nouveau_oclass *
 967 nvc0_fifo_oclass = &(struct nouveau_oclass) {
 968         .handle = NV_ENGINE(FIFO, 0xc0),
 969         .ofuncs = &(struct nouveau_ofuncs) {
 970                 .ctor = nvc0_fifo_ctor,
 971                 .dtor = nvc0_fifo_dtor,
 972                 .init = nvc0_fifo_init,
 973                 .fini = _nouveau_fifo_fini,
 974         },
 975 };