drivers/gpu/drm/nouveau/nv50_graph.c

   1 /*
   2  * Copyright (C) 2007 Ben Skeggs.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include "drmP.h"
  28 #include "drm.h"
  29 #include "nouveau_drv.h"
  30 #include "nouveau_ramht.h"
  31 #include "nouveau_grctx.h"
  32 #include "nouveau_dma.h"
  33 #include "nouveau_vm.h"
  34 #include "nv50_evo.h"
  35
  36 static int  nv50_graph_register(struct drm_device *);
  37 static void nv50_graph_isr(struct drm_device *);
  38
  39 static void
  40 nv50_graph_init_reset(struct drm_device *dev)
  41 {
  42         uint32_t pmc_e = NV_PMC_ENABLE_PGRAPH | (1 << 21);
  43
  44         NV_DEBUG(dev, "\n");
  45
  46         nv_wr32(dev, NV03_PMC_ENABLE, nv_rd32(dev, NV03_PMC_ENABLE) & ~pmc_e);
  47         nv_wr32(dev, NV03_PMC_ENABLE, nv_rd32(dev, NV03_PMC_ENABLE) |  pmc_e);
  48 }
  49
  50 static void
  51 nv50_graph_init_intr(struct drm_device *dev)
  52 {
  53         NV_DEBUG(dev, "\n");
  54
  55         nouveau_irq_register(dev, 12, nv50_graph_isr);
  56         nv_wr32(dev, NV03_PGRAPH_INTR, 0xffffffff);
  57         nv_wr32(dev, 0x400138, 0xffffffff);
  58         nv_wr32(dev, NV40_PGRAPH_INTR_EN, 0xffffffff);
  59 }
  60
  61 static void
  62 nv50_graph_init_regs__nv(struct drm_device *dev)
  63 {
  64         struct drm_nouveau_private *dev_priv = dev->dev_private;
  65         uint32_t units = nv_rd32(dev, 0x1540);
  66         int i;
  67
  68         NV_DEBUG(dev, "\n");
  69
  70         nv_wr32(dev, 0x400804, 0xc0000000);
  71         nv_wr32(dev, 0x406800, 0xc0000000);
  72         nv_wr32(dev, 0x400c04, 0xc0000000);
  73         nv_wr32(dev, 0x401800, 0xc0000000);
  74         nv_wr32(dev, 0x405018, 0xc0000000);
  75         nv_wr32(dev, 0x402000, 0xc0000000);
  76
  77         for (i = 0; i < 16; i++) {
  78                 if (units & 1 << i) {
  79                         if (dev_priv->chipset < 0xa0) {
  80                                 nv_wr32(dev, 0x408900 + (i << 12), 0xc0000000);
  81                                 nv_wr32(dev, 0x408e08 + (i << 12), 0xc0000000);
  82                                 nv_wr32(dev, 0x408314 + (i << 12), 0xc0000000);
  83                         } else {
  84                                 nv_wr32(dev, 0x408600 + (i << 11), 0xc0000000);
  85                                 nv_wr32(dev, 0x408708 + (i << 11), 0xc0000000);
  86                                 nv_wr32(dev, 0x40831c + (i << 11), 0xc0000000);
  87                         }
  88                 }
  89         }
  90
  91         nv_wr32(dev, 0x400108, 0xffffffff);
  92
  93         nv_wr32(dev, 0x400824, 0x00004000);
  94         nv_wr32(dev, 0x400500, 0x00010001);
  95 }
  96
  97 static void
  98 nv50_graph_init_zcull(struct drm_device *dev)
  99 {
 100         struct drm_nouveau_private *dev_priv = dev->dev_private;
 101         int i;
 102
 103         NV_DEBUG(dev, "\n");
 104
 105         switch (dev_priv->chipset & 0xf0) {
 106         case 0x50:
 107         case 0x80:
 108         case 0x90:
 109                 nv_wr32(dev, 0x402ca8, 0x00000800);
 110                 break;
 111         case 0xa0:
 112         default:
 113                 nv_wr32(dev, 0x402cc0, 0x00000000);
 114                 if (dev_priv->chipset == 0xa0 ||
 115                     dev_priv->chipset == 0xaa ||
 116                     dev_priv->chipset == 0xac) {
 117                         nv_wr32(dev, 0x402ca8, 0x00000802);
 118                 } else {
 119                         nv_wr32(dev, 0x402cc0, 0x00000000);
 120                         nv_wr32(dev, 0x402ca8, 0x00000002);
 121                 }
 122
 123                 break;
 124         }
 125
 126         /* zero out zcull regions */
 127         for (i = 0; i < 8; i++) {
 128                 nv_wr32(dev, 0x402c20 + (i * 8), 0x00000000);
 129                 nv_wr32(dev, 0x402c24 + (i * 8), 0x00000000);
 130                 nv_wr32(dev, 0x402c28 + (i * 8), 0x00000000);
 131                 nv_wr32(dev, 0x402c2c + (i * 8), 0x00000000);
 132         }
 133 }
 134
 135 static int
 136 nv50_graph_init_ctxctl(struct drm_device *dev)
 137 {
 138         struct drm_nouveau_private *dev_priv = dev->dev_private;
 139         struct nouveau_grctx ctx = {};
 140         uint32_t *cp;
 141         int i;
 142
 143         NV_DEBUG(dev, "\n");
 144
 145         cp = kmalloc(512 * 4, GFP_KERNEL);
 146         if (!cp) {
 147                 NV_ERROR(dev, "failed to allocate ctxprog\n");
 148                 dev_priv->engine.graph.accel_blocked = true;
 149                 return 0;
 150         }
 151
 152         ctx.dev = dev;
 153         ctx.mode = NOUVEAU_GRCTX_PROG;
 154         ctx.data = cp;
 155         ctx.ctxprog_max = 512;
 156         if (!nv50_grctx_init(&ctx)) {
 157                 dev_priv->engine.graph.grctx_size = ctx.ctxvals_pos * 4;
 158
 159                 nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_INDEX, 0);
 160                 for (i = 0; i < ctx.ctxprog_len; i++)
 161                         nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_DATA, cp[i]);
 162         } else {
 163                 dev_priv->engine.graph.accel_blocked = true;
 164         }
 165         kfree(cp);
 166
 167         nv_wr32(dev, 0x40008c, 0x00000004); /* HW_CTX_SWITCH_ENABLED */
 168         nv_wr32(dev, 0x400320, 4);
 169         nv_wr32(dev, NV40_PGRAPH_CTXCTL_CUR, 0);
 170         nv_wr32(dev, NV20_PGRAPH_CHANNEL_CTX_POINTER, 0);
 171         return 0;
 172 }
 173
 174 int
 175 nv50_graph_init(struct drm_device *dev)
 176 {
 177         int ret;
 178
 179         NV_DEBUG(dev, "\n");
 180
 181         nv50_graph_init_reset(dev);
 182         nv50_graph_init_regs__nv(dev);
 183         nv50_graph_init_zcull(dev);
 184
 185         ret = nv50_graph_init_ctxctl(dev);
 186         if (ret)
 187                 return ret;
 188
 189         ret = nv50_graph_register(dev);
 190         if (ret)
 191                 return ret;
 192         nv50_graph_init_intr(dev);
 193         return 0;
 194 }
 195
 196 void
 197 nv50_graph_takedown(struct drm_device *dev)
 198 {
 199         NV_DEBUG(dev, "\n");
 200         nv_wr32(dev, 0x40013c, 0x00000000);
 201         nouveau_irq_unregister(dev, 12);
 202 }
 203
 204 void
 205 nv50_graph_fifo_access(struct drm_device *dev, bool enabled)
 206 {
 207         const uint32_t mask = 0x00010001;
 208
 209         if (enabled)
 210                 nv_wr32(dev, 0x400500, nv_rd32(dev, 0x400500) | mask);
 211         else
 212                 nv_wr32(dev, 0x400500, nv_rd32(dev, 0x400500) & ~mask);
 213 }
 214
 215 struct nouveau_channel *
 216 nv50_graph_channel(struct drm_device *dev)
 217 {
 218         struct drm_nouveau_private *dev_priv = dev->dev_private;
 219         uint32_t inst;
 220         int i;
 221
 222         /* Be sure we're not in the middle of a context switch or bad things
 223          * will happen, such as unloading the wrong pgraph context.
 224          */
 225         if (!nv_wait(dev, 0x400300, 0x00000001, 0x00000000))
 226                 NV_ERROR(dev, "Ctxprog is still running\n");
 227
 228         inst = nv_rd32(dev, NV50_PGRAPH_CTXCTL_CUR);
 229         if (!(inst & NV50_PGRAPH_CTXCTL_CUR_LOADED))
 230                 return NULL;
 231         inst = (inst & NV50_PGRAPH_CTXCTL_CUR_INSTANCE) << 12;
 232
 233         for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
 234                 struct nouveau_channel *chan = dev_priv->channels.ptr[i];
 235
 236                 if (chan && chan->ramin && chan->ramin->vinst == inst)
 237                         return chan;
 238         }
 239
 240         return NULL;
 241 }
 242
 243 int
 244 nv50_graph_create_context(struct nouveau_channel *chan)
 245 {
 246         struct drm_device *dev = chan->dev;
 247         struct drm_nouveau_private *dev_priv = dev->dev_private;
 248         struct nouveau_gpuobj *ramin = chan->ramin;
 249         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
 250         struct nouveau_grctx ctx = {};
 251         int hdr, ret;
 252
 253         NV_DEBUG(dev, "ch%d\n", chan->id);
 254
 255         ret = nouveau_gpuobj_new(dev, chan, pgraph->grctx_size, 0,
 256                                  NVOBJ_FLAG_ZERO_ALLOC |
 257                                  NVOBJ_FLAG_ZERO_FREE, &chan->ramin_grctx);
 258         if (ret)
 259                 return ret;
 260
 261         hdr = (dev_priv->chipset == 0x50) ? 0x200 : 0x20;
 262         nv_wo32(ramin, hdr + 0x00, 0x00190002);
 263         nv_wo32(ramin, hdr + 0x04, chan->ramin_grctx->vinst +
 264                                    pgraph->grctx_size - 1);
 265         nv_wo32(ramin, hdr + 0x08, chan->ramin_grctx->vinst);
 266         nv_wo32(ramin, hdr + 0x0c, 0);
 267         nv_wo32(ramin, hdr + 0x10, 0);
 268         nv_wo32(ramin, hdr + 0x14, 0x00010000);
 269
 270         ctx.dev = chan->dev;
 271         ctx.mode = NOUVEAU_GRCTX_VALS;
 272         ctx.data = chan->ramin_grctx;
 273         nv50_grctx_init(&ctx);
 274
 275         nv_wo32(chan->ramin_grctx, 0x00000, chan->ramin->vinst >> 12);
 276
 277         dev_priv->engine.instmem.flush(dev);
 278         atomic_inc(&chan->vm->pgraph_refs);
 279         return 0;
 280 }
 281
 282 void
 283 nv50_graph_destroy_context(struct nouveau_channel *chan)
 284 {
 285         struct drm_device *dev = chan->dev;
 286         struct drm_nouveau_private *dev_priv = dev->dev_private;
 287         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
 288         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 289         int i, hdr = (dev_priv->chipset == 0x50) ? 0x200 : 0x20;
 290         unsigned long flags;
 291
 292         NV_DEBUG(dev, "ch%d\n", chan->id);
 293
 294         if (!chan->ramin)
 295                 return;
 296
 297         spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
 298         pfifo->reassign(dev, false);
 299         pgraph->fifo_access(dev, false);
 300
 301         if (pgraph->channel(dev) == chan)
 302                 pgraph->unload_context(dev);
 303
 304         for (i = hdr; i < hdr + 24; i += 4)
 305                 nv_wo32(chan->ramin, i, 0);
 306         dev_priv->engine.instmem.flush(dev);
 307
 308         pgraph->fifo_access(dev, true);
 309         pfifo->reassign(dev, true);
 310         spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
 311
 312         nouveau_gpuobj_ref(NULL, &chan->ramin_grctx);
 313
 314         atomic_dec(&chan->vm->pgraph_refs);
 315 }
 316
 317 static int
 318 nv50_graph_do_load_context(struct drm_device *dev, uint32_t inst)
 319 {
 320         uint32_t fifo = nv_rd32(dev, 0x400500);
 321
 322         nv_wr32(dev, 0x400500, fifo & ~1);
 323         nv_wr32(dev, 0x400784, inst);
 324         nv_wr32(dev, 0x400824, nv_rd32(dev, 0x400824) | 0x40);
 325         nv_wr32(dev, 0x400320, nv_rd32(dev, 0x400320) | 0x11);
 326         nv_wr32(dev, 0x400040, 0xffffffff);
 327         (void)nv_rd32(dev, 0x400040);
 328         nv_wr32(dev, 0x400040, 0x00000000);
 329         nv_wr32(dev, 0x400304, nv_rd32(dev, 0x400304) | 1);
 330
 331         if (nouveau_wait_for_idle(dev))
 332                 nv_wr32(dev, 0x40032c, inst | (1<<31));
 333         nv_wr32(dev, 0x400500, fifo);
 334
 335         return 0;
 336 }
 337
 338 int
 339 nv50_graph_load_context(struct nouveau_channel *chan)
 340 {
 341         uint32_t inst = chan->ramin->vinst >> 12;
 342
 343         NV_DEBUG(chan->dev, "ch%d\n", chan->id);
 344         return nv50_graph_do_load_context(chan->dev, inst);
 345 }
 346
 347 int
 348 nv50_graph_unload_context(struct drm_device *dev)
 349 {
 350         uint32_t inst;
 351
 352         inst  = nv_rd32(dev, NV50_PGRAPH_CTXCTL_CUR);
 353         if (!(inst & NV50_PGRAPH_CTXCTL_CUR_LOADED))
 354                 return 0;
 355         inst &= NV50_PGRAPH_CTXCTL_CUR_INSTANCE;
 356
 357         nouveau_wait_for_idle(dev);
 358         nv_wr32(dev, 0x400784, inst);
 359         nv_wr32(dev, 0x400824, nv_rd32(dev, 0x400824) | 0x20);
 360         nv_wr32(dev, 0x400304, nv_rd32(dev, 0x400304) | 0x01);
 361         nouveau_wait_for_idle(dev);
 362
 363         nv_wr32(dev, NV50_PGRAPH_CTXCTL_CUR, inst);
 364         return 0;
 365 }
 366
 367 static void
 368 nv50_graph_context_switch(struct drm_device *dev)
 369 {
 370         uint32_t inst;
 371
 372         nv50_graph_unload_context(dev);
 373
 374         inst  = nv_rd32(dev, NV50_PGRAPH_CTXCTL_NEXT);
 375         inst &= NV50_PGRAPH_CTXCTL_NEXT_INSTANCE;
 376         nv50_graph_do_load_context(dev, inst);
 377
 378         nv_wr32(dev, NV40_PGRAPH_INTR_EN, nv_rd32(dev,
 379                 NV40_PGRAPH_INTR_EN) | NV_PGRAPH_INTR_CONTEXT_SWITCH);
 380 }
 381
 382 static int
 383 nv50_graph_nvsw_dma_vblsem(struct nouveau_channel *chan,
 384                            u32 class, u32 mthd, u32 data)
 385 {
 386         struct nouveau_gpuobj *gpuobj;
 387
 388         gpuobj = nouveau_ramht_find(chan, data);
 389         if (!gpuobj)
 390                 return -ENOENT;
 391
 392         if (nouveau_notifier_offset(gpuobj, NULL))
 393                 return -EINVAL;
 394
 395         chan->nvsw.vblsem = gpuobj;
 396         chan->nvsw.vblsem_offset = ~0;
 397         return 0;
 398 }
 399
 400 static int
 401 nv50_graph_nvsw_vblsem_offset(struct nouveau_channel *chan,
 402                               u32 class, u32 mthd, u32 data)
 403 {
 404         if (nouveau_notifier_offset(chan->nvsw.vblsem, &data))
 405                 return -ERANGE;
 406
 407         chan->nvsw.vblsem_offset = data >> 2;
 408         return 0;
 409 }
 410
 411 static int
 412 nv50_graph_nvsw_vblsem_release_val(struct nouveau_channel *chan,
 413                                    u32 class, u32 mthd, u32 data)
 414 {
 415         chan->nvsw.vblsem_rval = data;
 416         return 0;
 417 }
 418
 419 static int
 420 nv50_graph_nvsw_vblsem_release(struct nouveau_channel *chan,
 421                                u32 class, u32 mthd, u32 data)
 422 {
 423         struct drm_device *dev = chan->dev;
 424         struct drm_nouveau_private *dev_priv = dev->dev_private;
 425
 426         if (!chan->nvsw.vblsem || chan->nvsw.vblsem_offset == ~0 || data > 1)
 427                 return -EINVAL;
 428
 429         drm_vblank_get(dev, data);
 430
 431         chan->nvsw.vblsem_head = data;
 432         list_add(&chan->nvsw.vbl_wait, &dev_priv->vbl_waiting);
 433
 434         return 0;
 435 }
 436
 437 static int
 438 nv50_graph_nvsw_mthd_page_flip(struct nouveau_channel *chan,
 439                                u32 class, u32 mthd, u32 data)
 440 {
 441         nouveau_finish_page_flip(chan, NULL);
 442         return 0;
 443 }
 444
 445 static int
 446 nv50_graph_register(struct drm_device *dev)
 447 {
 448         struct drm_nouveau_private *dev_priv = dev->dev_private;
 449
 450         if (dev_priv->engine.graph.registered)
 451                 return 0;
 452
 453         NVOBJ_CLASS(dev, 0x506e, SW); /* nvsw */
 454         NVOBJ_MTHD (dev, 0x506e, 0x018c, nv50_graph_nvsw_dma_vblsem);
 455         NVOBJ_MTHD (dev, 0x506e, 0x0400, nv50_graph_nvsw_vblsem_offset);
 456         NVOBJ_MTHD (dev, 0x506e, 0x0404, nv50_graph_nvsw_vblsem_release_val);
 457         NVOBJ_MTHD (dev, 0x506e, 0x0408, nv50_graph_nvsw_vblsem_release);
 458         NVOBJ_MTHD (dev, 0x506e, 0x0500, nv50_graph_nvsw_mthd_page_flip);
 459
 460         NVOBJ_CLASS(dev, 0x0030, GR); /* null */
 461         NVOBJ_CLASS(dev, 0x5039, GR); /* m2mf */
 462         NVOBJ_CLASS(dev, 0x502d, GR); /* 2d */
 463
 464         /* tesla */
 465         if (dev_priv->chipset == 0x50)
 466                 NVOBJ_CLASS(dev, 0x5097, GR); /* tesla (nv50) */
 467         else
 468         if (dev_priv->chipset < 0xa0)
 469                 NVOBJ_CLASS(dev, 0x8297, GR); /* tesla (nv8x/nv9x) */
 470         else {
 471                 switch (dev_priv->chipset) {
 472                 case 0xa0:
 473                 case 0xaa:
 474                 case 0xac:
 475                         NVOBJ_CLASS(dev, 0x8397, GR);
 476                         break;
 477                 case 0xa3:
 478                 case 0xa5:
 479                 case 0xa8:
 480                         NVOBJ_CLASS(dev, 0x8597, GR);
 481                         break;
 482                 case 0xaf:
 483                         NVOBJ_CLASS(dev, 0x8697, GR);
 484                         break;
 485                 }
 486         }
 487
 488         /* compute */
 489         NVOBJ_CLASS(dev, 0x50c0, GR);
 490         if (dev_priv->chipset  > 0xa0 &&
 491             dev_priv->chipset != 0xaa &&
 492             dev_priv->chipset != 0xac)
 493                 NVOBJ_CLASS(dev, 0x85c0, GR);
 494
 495         dev_priv->engine.graph.registered = true;
 496         return 0;
 497 }
 498
 499 void
 500 nv50_graph_tlb_flush(struct drm_device *dev)
 501 {
 502         nv50_vm_flush_engine(dev, 0);
 503 }
 504
 505 void
 506 nv84_graph_tlb_flush(struct drm_device *dev)
 507 {
 508         struct drm_nouveau_private *dev_priv = dev->dev_private;
 509         struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer;
 510         bool idle, timeout = false;
 511         unsigned long flags;
 512         u64 start;
 513         u32 tmp;
 514
 515         spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
 516         nv_mask(dev, 0x400500, 0x00000001, 0x00000000);
 517
 518         start = ptimer->read(dev);
 519         do {
 520                 idle = true;
 521
 522                 for (tmp = nv_rd32(dev, 0x400380); tmp && idle; tmp >>= 3) {
 523                         if ((tmp & 7) == 1)
 524                                 idle = false;
 525                 }
 526
 527                 for (tmp = nv_rd32(dev, 0x400384); tmp && idle; tmp >>= 3) {
 528                         if ((tmp & 7) == 1)
 529                                 idle = false;
 530                 }
 531
 532                 for (tmp = nv_rd32(dev, 0x400388); tmp && idle; tmp >>= 3) {
 533                         if ((tmp & 7) == 1)
 534                                 idle = false;
 535                 }
 536         } while (!idle && !(timeout = ptimer->read(dev) - start > 2000000000));
 537
 538         if (timeout) {
 539                 NV_ERROR(dev, "PGRAPH TLB flush idle timeout fail: "
 540                               "0x%08x 0x%08x 0x%08x 0x%08x\n",
 541                          nv_rd32(dev, 0x400700), nv_rd32(dev, 0x400380),
 542                          nv_rd32(dev, 0x400384), nv_rd32(dev, 0x400388));
 543         }
 544
 545         nv50_vm_flush_engine(dev, 0);
 546
 547         nv_mask(dev, 0x400500, 0x00000001, 0x00000001);
 548         spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
 549 }
 550
 551 static struct nouveau_enum nv50_mp_exec_error_names[] = {
 552         { 3, "STACK_UNDERFLOW", NULL },
 553         { 4, "QUADON_ACTIVE", NULL },
 554         { 8, "TIMEOUT", NULL },
 555         { 0x10, "INVALID_OPCODE", NULL },
 556         { 0x40, "BREAKPOINT", NULL },
 557         {}
 558 };
 559
 560 static struct nouveau_bitfield nv50_graph_trap_m2mf[] = {
 561         { 0x00000001, "NOTIFY" },
 562         { 0x00000002, "IN" },
 563         { 0x00000004, "OUT" },
 564         {}
 565 };
 566
 567 static struct nouveau_bitfield nv50_graph_trap_vfetch[] = {
 568         { 0x00000001, "FAULT" },
 569         {}
 570 };
 571
 572 static struct nouveau_bitfield nv50_graph_trap_strmout[] = {
 573         { 0x00000001, "FAULT" },
 574         {}
 575 };
 576
 577 static struct nouveau_bitfield nv50_graph_trap_ccache[] = {
 578         { 0x00000001, "FAULT" },
 579         {}
 580 };
 581
 582 /* There must be a *lot* of these. Will take some time to gather them up. */
 583 struct nouveau_enum nv50_data_error_names[] = {
 584         { 0x00000003, "INVALID_QUERY_OR_TEXTURE", NULL },
 585         { 0x00000004, "INVALID_VALUE", NULL },
 586         { 0x00000005, "INVALID_ENUM", NULL },
 587         { 0x00000008, "INVALID_OBJECT", NULL },
 588         { 0x00000009, "READ_ONLY_OBJECT", NULL },
 589         { 0x0000000a, "SUPERVISOR_OBJECT", NULL },
 590         { 0x0000000b, "INVALID_ADDRESS_ALIGNMENT", NULL },
 591         { 0x0000000c, "INVALID_BITFIELD", NULL },
 592         { 0x0000000d, "BEGIN_END_ACTIVE", NULL },
 593         { 0x0000000e, "SEMANTIC_COLOR_BACK_OVER_LIMIT", NULL },
 594         { 0x0000000f, "VIEWPORT_ID_NEEDS_GP", NULL },
 595         { 0x00000010, "RT_DOUBLE_BIND", NULL },
 596         { 0x00000011, "RT_TYPES_MISMATCH", NULL },
 597         { 0x00000012, "RT_LINEAR_WITH_ZETA", NULL },
 598         { 0x00000015, "FP_TOO_FEW_REGS", NULL },
 599         { 0x00000016, "ZETA_FORMAT_CSAA_MISMATCH", NULL },
 600         { 0x00000017, "RT_LINEAR_WITH_MSAA", NULL },
 601         { 0x00000018, "FP_INTERPOLANT_START_OVER_LIMIT", NULL },
 602         { 0x00000019, "SEMANTIC_LAYER_OVER_LIMIT", NULL },
 603         { 0x0000001a, "RT_INVALID_ALIGNMENT", NULL },
 604         { 0x0000001b, "SAMPLER_OVER_LIMIT", NULL },
 605         { 0x0000001c, "TEXTURE_OVER_LIMIT", NULL },
 606         { 0x0000001e, "GP_TOO_MANY_OUTPUTS", NULL },
 607         { 0x0000001f, "RT_BPP128_WITH_MS8", NULL },
 608         { 0x00000021, "Z_OUT_OF_BOUNDS", NULL },
 609         { 0x00000023, "XY_OUT_OF_BOUNDS", NULL },
 610         { 0x00000027, "CP_MORE_PARAMS_THAN_SHARED", NULL },
 611         { 0x00000028, "CP_NO_REG_SPACE_STRIPED", NULL },
 612         { 0x00000029, "CP_NO_REG_SPACE_PACKED", NULL },
 613         { 0x0000002a, "CP_NOT_ENOUGH_WARPS", NULL },
 614         { 0x0000002b, "CP_BLOCK_SIZE_MISMATCH", NULL },
 615         { 0x0000002c, "CP_NOT_ENOUGH_LOCAL_WARPS", NULL },
 616         { 0x0000002d, "CP_NOT_ENOUGH_STACK_WARPS", NULL },
 617         { 0x0000002e, "CP_NO_BLOCKDIM_LATCH", NULL },
 618         { 0x00000031, "ENG2D_FORMAT_MISMATCH", NULL },
 619         { 0x0000003f, "PRIMITIVE_ID_NEEDS_GP", NULL },
 620         { 0x00000044, "SEMANTIC_VIEWPORT_OVER_LIMIT", NULL },
 621         { 0x00000045, "SEMANTIC_COLOR_FRONT_OVER_LIMIT", NULL },
 622         { 0x00000046, "LAYER_ID_NEEDS_GP", NULL },
 623         { 0x00000047, "SEMANTIC_CLIP_OVER_LIMIT", NULL },
 624         { 0x00000048, "SEMANTIC_PTSZ_OVER_LIMIT", NULL },
 625         {}
 626 };
 627
 628 static struct nouveau_bitfield nv50_graph_intr[] = {
 629         { 0x00000001, "NOTIFY" },
 630         { 0x00000002, "COMPUTE_QUERY" },
 631         { 0x00000010, "ILLEGAL_MTHD" },
 632         { 0x00000020, "ILLEGAL_CLASS" },
 633         { 0x00000040, "DOUBLE_NOTIFY" },
 634         { 0x00001000, "CONTEXT_SWITCH" },
 635         { 0x00010000, "BUFFER_NOTIFY" },
 636         { 0x00100000, "DATA_ERROR" },
 637         { 0x00200000, "TRAP" },
 638         { 0x01000000, "SINGLE_STEP" },
 639         {}
 640 };
 641
 642 static void
 643 nv50_pgraph_mp_trap(struct drm_device *dev, int tpid, int display)
 644 {
 645         struct drm_nouveau_private *dev_priv = dev->dev_private;
 646         uint32_t units = nv_rd32(dev, 0x1540);
 647         uint32_t addr, mp10, status, pc, oplow, ophigh;
 648         int i;
 649         int mps = 0;
 650         for (i = 0; i < 4; i++) {
 651                 if (!(units & 1 << (i+24)))
 652                         continue;
 653                 if (dev_priv->chipset < 0xa0)
 654                         addr = 0x408200 + (tpid << 12) + (i << 7);
 655                 else
 656                         addr = 0x408100 + (tpid << 11) + (i << 7);
 657                 mp10 = nv_rd32(dev, addr + 0x10);
 658                 status = nv_rd32(dev, addr + 0x14);
 659                 if (!status)
 660                         continue;
 661                 if (display) {
 662                         nv_rd32(dev, addr + 0x20);
 663                         pc = nv_rd32(dev, addr + 0x24);
 664                         oplow = nv_rd32(dev, addr + 0x70);
 665                         ophigh = nv_rd32(dev, addr + 0x74);
 666                         NV_INFO(dev, "PGRAPH_TRAP_MP_EXEC - "
 667                                         "TP %d MP %d: ", tpid, i);
 668                         nouveau_enum_print(nv50_mp_exec_error_names, status);
 669                         printk(" at %06x warp %d, opcode %08x %08x\n",
 670                                         pc&0xffffff, pc >> 24,
 671                                         oplow, ophigh);
 672                 }
 673                 nv_wr32(dev, addr + 0x10, mp10);
 674                 nv_wr32(dev, addr + 0x14, 0);
 675                 mps++;
 676         }
 677         if (!mps && display)
 678                 NV_INFO(dev, "PGRAPH_TRAP_MP_EXEC - TP %d: "
 679                                 "No MPs claiming errors?\n", tpid);
 680 }
 681
 682 static void
 683 nv50_pgraph_tp_trap(struct drm_device *dev, int type, uint32_t ustatus_old,
 684                 uint32_t ustatus_new, int display, const char *name)
 685 {
 686         struct drm_nouveau_private *dev_priv = dev->dev_private;
 687         int tps = 0;
 688         uint32_t units = nv_rd32(dev, 0x1540);
 689         int i, r;
 690         uint32_t ustatus_addr, ustatus;
 691         for (i = 0; i < 16; i++) {
 692                 if (!(units & (1 << i)))
 693                         continue;
 694                 if (dev_priv->chipset < 0xa0)
 695                         ustatus_addr = ustatus_old + (i << 12);
 696                 else
 697                         ustatus_addr = ustatus_new + (i << 11);
 698                 ustatus = nv_rd32(dev, ustatus_addr) & 0x7fffffff;
 699                 if (!ustatus)
 700                         continue;
 701                 tps++;
 702                 switch (type) {
 703                 case 6: /* texture error... unknown for now */
 704                         if (display) {
 705                                 NV_ERROR(dev, "magic set %d:\n", i);
 706                                 for (r = ustatus_addr + 4; r <= ustatus_addr + 0x10; r += 4)
 707                                         NV_ERROR(dev, "\t0x%08x: 0x%08x\n", r,
 708                                                 nv_rd32(dev, r));
 709                         }
 710                         break;
 711                 case 7: /* MP error */
 712                         if (ustatus & 0x00010000) {
 713                                 nv50_pgraph_mp_trap(dev, i, display);
 714                                 ustatus &= ~0x00010000;
 715                         }
 716                         break;
 717                 case 8: /* TPDMA error */
 718                         {
 719                         uint32_t e0c = nv_rd32(dev, ustatus_addr + 4);
 720                         uint32_t e10 = nv_rd32(dev, ustatus_addr + 8);
 721                         uint32_t e14 = nv_rd32(dev, ustatus_addr + 0xc);
 722                         uint32_t e18 = nv_rd32(dev, ustatus_addr + 0x10);
 723                         uint32_t e1c = nv_rd32(dev, ustatus_addr + 0x14);
 724                         uint32_t e20 = nv_rd32(dev, ustatus_addr + 0x18);
 725                         uint32_t e24 = nv_rd32(dev, ustatus_addr + 0x1c);
 726                         /* 2d engine destination */
 727                         if (ustatus & 0x00000010) {
 728                                 if (display) {
 729                                         NV_INFO(dev, "PGRAPH_TRAP_TPDMA_2D - TP %d - Unknown fault at address %02x%08x\n",
 730                                                         i, e14, e10);
 731                                         NV_INFO(dev, "PGRAPH_TRAP_TPDMA_2D - TP %d - e0c: %08x, e18: %08x, e1c: %08x, e20: %08x, e24: %08x\n",
 732                                                         i, e0c, e18, e1c, e20, e24);
 733                                 }
 734                                 ustatus &= ~0x00000010;
 735                         }
 736                         /* Render target */
 737                         if (ustatus & 0x00000040) {
 738                                 if (display) {
 739                                         NV_INFO(dev, "PGRAPH_TRAP_TPDMA_RT - TP %d - Unknown fault at address %02x%08x\n",
 740                                                         i, e14, e10);
 741                                         NV_INFO(dev, "PGRAPH_TRAP_TPDMA_RT - TP %d - e0c: %08x, e18: %08x, e1c: %08x, e20: %08x, e24: %08x\n",
 742                                                         i, e0c, e18, e1c, e20, e24);
 743                                 }
 744                                 ustatus &= ~0x00000040;
 745                         }
 746                         /* CUDA memory: l[], g[] or stack. */
 747                         if (ustatus & 0x00000080) {
 748                                 if (display) {
 749                                         if (e18 & 0x80000000) {
 750                                                 /* g[] read fault? */
 751                                                 NV_INFO(dev, "PGRAPH_TRAP_TPDMA - TP %d - Global read fault at address %02x%08x\n",
 752                                                                 i, e14, e10 | ((e18 >> 24) & 0x1f));
 753                                                 e18 &= ~0x1f000000;
 754                                         } else if (e18 & 0xc) {
 755                                                 /* g[] write fault? */
 756                                                 NV_INFO(dev, "PGRAPH_TRAP_TPDMA - TP %d - Global write fault at address %02x%08x\n",
 757                                                                 i, e14, e10 | ((e18 >> 7) & 0x1f));
 758                                                 e18 &= ~0x00000f80;
 759                                         } else {
 760                                                 NV_INFO(dev, "PGRAPH_TRAP_TPDMA - TP %d - Unknown CUDA fault at address %02x%08x\n",
 761                                                                 i, e14, e10);
 762                                         }
 763                                         NV_INFO(dev, "PGRAPH_TRAP_TPDMA - TP %d - e0c: %08x, e18: %08x, e1c: %08x, e20: %08x, e24: %08x\n",
 764                                                         i, e0c, e18, e1c, e20, e24);
 765                                 }
 766                                 ustatus &= ~0x00000080;
 767                         }
 768                         }
 769                         break;
 770                 }
 771                 if (ustatus) {
 772                         if (display)
 773                                 NV_INFO(dev, "%s - TP%d: Unhandled ustatus 0x%08x\n", name, i, ustatus);
 774                 }
 775                 nv_wr32(dev, ustatus_addr, 0xc0000000);
 776         }
 777
 778         if (!tps && display)
 779                 NV_INFO(dev, "%s - No TPs claiming errors?\n", name);
 780 }
 781
 782 static int
 783 nv50_pgraph_trap_handler(struct drm_device *dev, u32 display, u64 inst, u32 chid)
 784 {
 785         u32 status = nv_rd32(dev, 0x400108);
 786         u32 ustatus;
 787
 788         if (!status && display) {
 789                 NV_INFO(dev, "PGRAPH - TRAP: no units reporting traps?\n");
 790                 return 1;
 791         }
 792
 793         /* DISPATCH: Relays commands to other units and handles NOTIFY,
 794          * COND, QUERY. If you get a trap from it, the command is still stuck
 795          * in DISPATCH and you need to do something about it. */
 796         if (status & 0x001) {
 797                 ustatus = nv_rd32(dev, 0x400804) & 0x7fffffff;
 798                 if (!ustatus && display) {
 799                         NV_INFO(dev, "PGRAPH_TRAP_DISPATCH - no ustatus?\n");
 800                 }
 801
 802                 nv_wr32(dev, 0x400500, 0x00000000);
 803
 804                 /* Known to be triggered by screwed up NOTIFY and COND... */
 805                 if (ustatus & 0x00000001) {
 806                         u32 addr = nv_rd32(dev, 0x400808);
 807                         u32 subc = (addr & 0x00070000) >> 16;
 808                         u32 mthd = (addr & 0x00001ffc);
 809                         u32 datal = nv_rd32(dev, 0x40080c);
 810                         u32 datah = nv_rd32(dev, 0x400810);
 811                         u32 class = nv_rd32(dev, 0x400814);
 812                         u32 r848 = nv_rd32(dev, 0x400848);
 813
 814                         NV_INFO(dev, "PGRAPH - TRAP DISPATCH_FAULT\n");
 815                         if (display && (addr & 0x80000000)) {
 816                                 NV_INFO(dev, "PGRAPH - ch %d (0x%010llx) "
 817                                              "subc %d class 0x%04x mthd 0x%04x "
 818                                              "data 0x%08x%08x "
 819                                              "400808 0x%08x 400848 0x%08x\n",
 820                                         chid, inst, subc, class, mthd, datah,
 821                                         datal, addr, r848);
 822                         } else
 823                         if (display) {
 824                                 NV_INFO(dev, "PGRAPH - no stuck command?\n");
 825                         }
 826
 827                         nv_wr32(dev, 0x400808, 0);
 828                         nv_wr32(dev, 0x4008e8, nv_rd32(dev, 0x4008e8) & 3);
 829                         nv_wr32(dev, 0x400848, 0);
 830                         ustatus &= ~0x00000001;
 831                 }
 832
 833                 if (ustatus & 0x00000002) {
 834                         u32 addr = nv_rd32(dev, 0x40084c);
 835                         u32 subc = (addr & 0x00070000) >> 16;
 836                         u32 mthd = (addr & 0x00001ffc);
 837                         u32 data = nv_rd32(dev, 0x40085c);
 838                         u32 class = nv_rd32(dev, 0x400814);
 839
 840                         NV_INFO(dev, "PGRAPH - TRAP DISPATCH_QUERY\n");
 841                         if (display && (addr & 0x80000000)) {
 842                                 NV_INFO(dev, "PGRAPH - ch %d (0x%010llx) "
 843                                              "subc %d class 0x%04x mthd 0x%04x "
 844                                              "data 0x%08x 40084c 0x%08x\n",
 845                                         chid, inst, subc, class, mthd,
 846                                         data, addr);
 847                         } else
 848                         if (display) {
 849                                 NV_INFO(dev, "PGRAPH - no stuck command?\n");
 850                         }
 851
 852                         nv_wr32(dev, 0x40084c, 0);
 853                         ustatus &= ~0x00000002;
 854                 }
 855
 856                 if (ustatus && display) {
 857                         NV_INFO(dev, "PGRAPH - TRAP_DISPATCH (unknown "
 858                                       "0x%08x)\n", ustatus);
 859                 }
 860
 861                 nv_wr32(dev, 0x400804, 0xc0000000);
 862                 nv_wr32(dev, 0x400108, 0x001);
 863                 status &= ~0x001;
 864                 if (!status)
 865                         return 0;
 866         }
 867
 868         /* M2MF: Memory to memory copy engine. */
 869         if (status & 0x002) {
 870                 u32 ustatus = nv_rd32(dev, 0x406800) & 0x7fffffff;
 871                 if (display) {
 872                         NV_INFO(dev, "PGRAPH - TRAP_M2MF");
 873                         nouveau_bitfield_print(nv50_graph_trap_m2mf, ustatus);
 874                         printk("\n");
 875                         NV_INFO(dev, "PGRAPH - TRAP_M2MF %08x %08x %08x %08x\n",
 876                                 nv_rd32(dev, 0x406804), nv_rd32(dev, 0x406808),
 877                                 nv_rd32(dev, 0x40680c), nv_rd32(dev, 0x406810));
 878
 879                 }
 880
 881                 /* No sane way found yet -- just reset the bugger. */
 882                 nv_wr32(dev, 0x400040, 2);
 883                 nv_wr32(dev, 0x400040, 0);
 884                 nv_wr32(dev, 0x406800, 0xc0000000);
 885                 nv_wr32(dev, 0x400108, 0x002);
 886                 status &= ~0x002;
 887         }
 888
 889         /* VFETCH: Fetches data from vertex buffers. */
 890         if (status & 0x004) {
 891                 u32 ustatus = nv_rd32(dev, 0x400c04) & 0x7fffffff;
 892                 if (display) {
 893                         NV_INFO(dev, "PGRAPH - TRAP_VFETCH");
 894                         nouveau_bitfield_print(nv50_graph_trap_vfetch, ustatus);
 895                         printk("\n");
 896                         NV_INFO(dev, "PGRAPH - TRAP_VFETCH %08x %08x %08x %08x\n",
 897                                 nv_rd32(dev, 0x400c00), nv_rd32(dev, 0x400c08),
 898                                 nv_rd32(dev, 0x400c0c), nv_rd32(dev, 0x400c10));
 899                 }
 900
 901                 nv_wr32(dev, 0x400c04, 0xc0000000);
 902                 nv_wr32(dev, 0x400108, 0x004);
 903                 status &= ~0x004;
 904         }
 905
 906         /* STRMOUT: DirectX streamout / OpenGL transform feedback. */
 907         if (status & 0x008) {
 908                 ustatus = nv_rd32(dev, 0x401800) & 0x7fffffff;
 909                 if (display) {
 910                         NV_INFO(dev, "PGRAPH - TRAP_STRMOUT");
 911                         nouveau_bitfield_print(nv50_graph_trap_strmout, ustatus);
 912                         printk("\n");
 913                         NV_INFO(dev, "PGRAPH - TRAP_STRMOUT %08x %08x %08x %08x\n",
 914                                 nv_rd32(dev, 0x401804), nv_rd32(dev, 0x401808),
 915                                 nv_rd32(dev, 0x40180c), nv_rd32(dev, 0x401810));
 916
 917                 }
 918
 919                 /* No sane way found yet -- just reset the bugger. */
 920                 nv_wr32(dev, 0x400040, 0x80);
 921                 nv_wr32(dev, 0x400040, 0);
 922                 nv_wr32(dev, 0x401800, 0xc0000000);
 923                 nv_wr32(dev, 0x400108, 0x008);
 924                 status &= ~0x008;
 925         }
 926
 927         /* CCACHE: Handles code and c[] caches and fills them. */
 928         if (status & 0x010) {
 929                 ustatus = nv_rd32(dev, 0x405018) & 0x7fffffff;
 930                 if (display) {
 931                         NV_INFO(dev, "PGRAPH - TRAP_CCACHE");
 932                         nouveau_bitfield_print(nv50_graph_trap_ccache, ustatus);
 933                         printk("\n");
 934                         NV_INFO(dev, "PGRAPH - TRAP_CCACHE %08x %08x %08x %08x"
 935                                      " %08x %08x %08x\n",
 936                                 nv_rd32(dev, 0x405000), nv_rd32(dev, 0x405004),
 937                                 nv_rd32(dev, 0x405008), nv_rd32(dev, 0x40500c),
 938                                 nv_rd32(dev, 0x405010), nv_rd32(dev, 0x405014),
 939                                 nv_rd32(dev, 0x40501c));
 940
 941                 }
 942
 943                 nv_wr32(dev, 0x405018, 0xc0000000);
 944                 nv_wr32(dev, 0x400108, 0x010);
 945                 status &= ~0x010;
 946         }
 947
 948         /* Unknown, not seen yet... 0x402000 is the only trap status reg
 949          * remaining, so try to handle it anyway. Perhaps related to that
 950          * unknown DMA slot on tesla? */
 951         if (status & 0x20) {
 952                 ustatus = nv_rd32(dev, 0x402000) & 0x7fffffff;
 953                 if (display)
 954                         NV_INFO(dev, "PGRAPH - TRAP_UNKC04 0x%08x\n", ustatus);
 955                 nv_wr32(dev, 0x402000, 0xc0000000);
 956                 /* no status modifiction on purpose */
 957         }
 958
 959         /* TEXTURE: CUDA texturing units */
 960         if (status & 0x040) {
 961                 nv50_pgraph_tp_trap(dev, 6, 0x408900, 0x408600, display,
 962                                     "PGRAPH - TRAP_TEXTURE");
 963                 nv_wr32(dev, 0x400108, 0x040);
 964                 status &= ~0x040;
 965         }
 966
 967         /* MP: CUDA execution engines. */
 968         if (status & 0x080) {
 969                 nv50_pgraph_tp_trap(dev, 7, 0x408314, 0x40831c, display,
 970                                     "PGRAPH - TRAP_MP");
 971                 nv_wr32(dev, 0x400108, 0x080);
 972                 status &= ~0x080;
 973         }
 974
 975         /* TPDMA:  Handles TP-initiated uncached memory accesses:
 976          * l[], g[], stack, 2d surfaces, render targets. */
 977         if (status & 0x100) {
 978                 nv50_pgraph_tp_trap(dev, 8, 0x408e08, 0x408708, display,
 979                                     "PGRAPH - TRAP_TPDMA");
 980                 nv_wr32(dev, 0x400108, 0x100);
 981                 status &= ~0x100;
 982         }
 983
 984         if (status) {
 985                 if (display)
 986                         NV_INFO(dev, "PGRAPH - TRAP: unknown 0x%08x\n", status);
 987                 nv_wr32(dev, 0x400108, status);
 988         }
 989
 990         return 1;
 991 }
 992
 993 static int
 994 nv50_graph_isr_chid(struct drm_device *dev, u64 inst)
 995 {
 996         struct drm_nouveau_private *dev_priv = dev->dev_private;
 997         struct nouveau_channel *chan;
 998         unsigned long flags;
 999         int i;
1000
1001         spin_lock_irqsave(&dev_priv->channels.lock, flags);
1002         for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
1003                 chan = dev_priv->channels.ptr[i];
1004                 if (!chan || !chan->ramin)
1005                         continue;
1006
1007                 if (inst == chan->ramin->vinst)
1008                         break;
1009         }
1010         spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
1011         return i;
1012 }
1013
1014 static void
1015 nv50_graph_isr(struct drm_device *dev)
1016 {
1017         u32 stat;
1018
1019         while ((stat = nv_rd32(dev, 0x400100))) {
1020                 u64 inst = (u64)(nv_rd32(dev, 0x40032c) & 0x0fffffff) << 12;
1021                 u32 chid = nv50_graph_isr_chid(dev, inst);
1022                 u32 addr = nv_rd32(dev, NV04_PGRAPH_TRAPPED_ADDR);
1023                 u32 subc = (addr & 0x00070000) >> 16;
1024                 u32 mthd = (addr & 0x00001ffc);
1025                 u32 data = nv_rd32(dev, NV04_PGRAPH_TRAPPED_DATA);
1026                 u32 class = nv_rd32(dev, 0x400814);
1027                 u32 show = stat;
1028
1029                 if (stat & 0x00000010) {
1030                         if (!nouveau_gpuobj_mthd_call2(dev, chid, class,
1031                                                        mthd, data))
1032                                 show &= ~0x00000010;
1033                 }
1034
1035                 if (stat & 0x00001000) {
1036                         nv_wr32(dev, 0x400500, 0x00000000);
1037                         nv_wr32(dev, 0x400100, 0x00001000);
1038                         nv_mask(dev, 0x40013c, 0x00001000, 0x00000000);
1039                         nv50_graph_context_switch(dev);
1040                         stat &= ~0x00001000;
1041                         show &= ~0x00001000;
1042                 }
1043
1044                 show = (show && nouveau_ratelimit()) ? show : 0;
1045
1046                 if (show & 0x00100000) {
1047                         u32 ecode = nv_rd32(dev, 0x400110);
1048                         NV_INFO(dev, "PGRAPH - DATA_ERROR ");
1049                         nouveau_enum_print(nv50_data_error_names, ecode);
1050                         printk("\n");
1051                 }
1052
1053                 if (stat & 0x00200000) {
1054                         if (!nv50_pgraph_trap_handler(dev, show, inst, chid))
1055                                 show &= ~0x00200000;
1056                 }
1057
1058                 nv_wr32(dev, 0x400100, stat);
1059                 nv_wr32(dev, 0x400500, 0x00010001);
1060
1061                 if (show) {
1062                         NV_INFO(dev, "PGRAPH -");
1063                         nouveau_bitfield_print(nv50_graph_intr, show);
1064                         printk("\n");
1065                         NV_INFO(dev, "PGRAPH - ch %d (0x%010llx) subc %d "
1066                                      "class 0x%04x mthd 0x%04x data 0x%08x\n",
1067                                 chid, inst, subc, class, mthd, data);
1068                         nv50_fb_vm_trap(dev, 1);
1069                 }
1070         }
1071
1072         if (nv_rd32(dev, 0x400824) & (1 << 31))
1073                 nv_wr32(dev, 0x400824, nv_rd32(dev, 0x400824) & ~(1 << 31));
1074 }