drivers/gpu/drm/nouveau/nvc0_fifo.c

   1 /*
   2  * Copyright 2010 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 "drmP.h"
  26
  27 #include "nouveau_drv.h"
  28 #include "nouveau_mm.h"
  29
  30 static void nvc0_fifo_isr(struct drm_device *);
  31
  32 struct nvc0_fifo_priv {
  33         struct nouveau_gpuobj *playlist[2];
  34         int cur_playlist;
  35         struct nouveau_vma user_vma;
  36         int spoon_nr;
  37 };
  38
  39 struct nvc0_fifo_chan {
  40         struct nouveau_gpuobj *user;
  41         struct nouveau_gpuobj *ramfc;
  42 };
  43
  44 static void
  45 nvc0_fifo_playlist_update(struct drm_device *dev)
  46 {
  47         struct drm_nouveau_private *dev_priv = dev->dev_private;
  48         struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
  49         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
  50         struct nvc0_fifo_priv *priv = pfifo->priv;
  51         struct nouveau_gpuobj *cur;
  52         int i, p;
  53
  54         cur = priv->playlist[priv->cur_playlist];
  55         priv->cur_playlist = !priv->cur_playlist;
  56
  57         for (i = 0, p = 0; i < 128; i++) {
  58                 if (!(nv_rd32(dev, 0x3004 + (i * 8)) & 1))
  59                         continue;
  60                 nv_wo32(cur, p + 0, i);
  61                 nv_wo32(cur, p + 4, 0x00000004);
  62                 p += 8;
  63         }
  64         pinstmem->flush(dev);
  65
  66         nv_wr32(dev, 0x002270, cur->vinst >> 12);
  67         nv_wr32(dev, 0x002274, 0x01f00000 | (p >> 3));
  68         if (!nv_wait(dev, 0x00227c, 0x00100000, 0x00000000))
  69                 NV_ERROR(dev, "PFIFO - playlist update failed\n");
  70 }
  71
  72 void
  73 nvc0_fifo_disable(struct drm_device *dev)
  74 {
  75 }
  76
  77 void
  78 nvc0_fifo_enable(struct drm_device *dev)
  79 {
  80 }
  81
  82 bool
  83 nvc0_fifo_reassign(struct drm_device *dev, bool enable)
  84 {
  85         return false;
  86 }
  87
  88 bool
  89 nvc0_fifo_cache_pull(struct drm_device *dev, bool enable)
  90 {
  91         return false;
  92 }
  93
  94 int
  95 nvc0_fifo_channel_id(struct drm_device *dev)
  96 {
  97         return 127;
  98 }
  99
 100 int
 101 nvc0_fifo_create_context(struct nouveau_channel *chan)
 102 {
 103         struct drm_device *dev = chan->dev;
 104         struct drm_nouveau_private *dev_priv = dev->dev_private;
 105         struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
 106         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 107         struct nvc0_fifo_priv *priv = pfifo->priv;
 108         struct nvc0_fifo_chan *fifoch;
 109         u64 ib_virt = chan->pushbuf_base + chan->dma.ib_base * 4;
 110         int ret;
 111
 112         chan->fifo_priv = kzalloc(sizeof(*fifoch), GFP_KERNEL);
 113         if (!chan->fifo_priv)
 114                 return -ENOMEM;
 115         fifoch = chan->fifo_priv;
 116
 117         /* allocate vram for control regs, map into polling area */
 118         ret = nouveau_gpuobj_new(dev, NULL, 0x1000, 0x1000,
 119                                  NVOBJ_FLAG_ZERO_ALLOC, &fifoch->user);
 120         if (ret)
 121                 goto error;
 122
 123         nouveau_vm_map_at(&priv->user_vma, chan->id * 0x1000,
 124                           *(struct nouveau_mem **)fifoch->user->node);
 125
 126         chan->user = ioremap_wc(pci_resource_start(dev->pdev, 1) +
 127                                 priv->user_vma.offset + (chan->id * 0x1000),
 128                                 PAGE_SIZE);
 129         if (!chan->user) {
 130                 ret = -ENOMEM;
 131                 goto error;
 132         }
 133
 134         /* ramfc */
 135         ret = nouveau_gpuobj_new_fake(dev, chan->ramin->pinst,
 136                                       chan->ramin->vinst, 0x100,
 137                                       NVOBJ_FLAG_ZERO_ALLOC, &fifoch->ramfc);
 138         if (ret)
 139                 goto error;
 140
 141         nv_wo32(fifoch->ramfc, 0x08, lower_32_bits(fifoch->user->vinst));
 142         nv_wo32(fifoch->ramfc, 0x0c, upper_32_bits(fifoch->user->vinst));
 143         nv_wo32(fifoch->ramfc, 0x10, 0x0000face);
 144         nv_wo32(fifoch->ramfc, 0x30, 0xfffff902);
 145         nv_wo32(fifoch->ramfc, 0x48, lower_32_bits(ib_virt));
 146         nv_wo32(fifoch->ramfc, 0x4c, drm_order(chan->dma.ib_max + 1) << 16 |
 147                                    upper_32_bits(ib_virt));
 148         nv_wo32(fifoch->ramfc, 0x54, 0x00000002);
 149         nv_wo32(fifoch->ramfc, 0x84, 0x20400000);
 150         nv_wo32(fifoch->ramfc, 0x94, 0x30000001);
 151         nv_wo32(fifoch->ramfc, 0x9c, 0x00000100);
 152         nv_wo32(fifoch->ramfc, 0xa4, 0x1f1f1f1f);
 153         nv_wo32(fifoch->ramfc, 0xa8, 0x1f1f1f1f);
 154         nv_wo32(fifoch->ramfc, 0xac, 0x0000001f);
 155         nv_wo32(fifoch->ramfc, 0xb8, 0xf8000000);
 156         nv_wo32(fifoch->ramfc, 0xf8, 0x10003080); /* 0x002310 */
 157         nv_wo32(fifoch->ramfc, 0xfc, 0x10000010); /* 0x002350 */
 158         pinstmem->flush(dev);
 159
 160         nv_wr32(dev, 0x003000 + (chan->id * 8), 0xc0000000 |
 161                                                 (chan->ramin->vinst >> 12));
 162         nv_wr32(dev, 0x003004 + (chan->id * 8), 0x001f0001);
 163         nvc0_fifo_playlist_update(dev);
 164         return 0;
 165
 166 error:
 167         pfifo->destroy_context(chan);
 168         return ret;
 169 }
 170
 171 void
 172 nvc0_fifo_destroy_context(struct nouveau_channel *chan)
 173 {
 174         struct drm_device *dev = chan->dev;
 175         struct nvc0_fifo_chan *fifoch;
 176
 177         nv_mask(dev, 0x003004 + (chan->id * 8), 0x00000001, 0x00000000);
 178         nv_wr32(dev, 0x002634, chan->id);
 179         if (!nv_wait(dev, 0x0002634, 0xffffffff, chan->id))
 180                 NV_WARN(dev, "0x2634 != chid: 0x%08x\n", nv_rd32(dev, 0x2634));
 181
 182         nvc0_fifo_playlist_update(dev);
 183
 184         nv_wr32(dev, 0x003000 + (chan->id * 8), 0x00000000);
 185
 186         if (chan->user) {
 187                 iounmap(chan->user);
 188                 chan->user = NULL;
 189         }
 190
 191         fifoch = chan->fifo_priv;
 192         chan->fifo_priv = NULL;
 193         if (!fifoch)
 194                 return;
 195
 196         nouveau_gpuobj_ref(NULL, &fifoch->ramfc);
 197         nouveau_gpuobj_ref(NULL, &fifoch->user);
 198         kfree(fifoch);
 199 }
 200
 201 int
 202 nvc0_fifo_load_context(struct nouveau_channel *chan)
 203 {
 204         return 0;
 205 }
 206
 207 int
 208 nvc0_fifo_unload_context(struct drm_device *dev)
 209 {
 210         int i;
 211
 212         for (i = 0; i < 128; i++) {
 213                 if (!(nv_rd32(dev, 0x003004 + (i * 8)) & 1))
 214                         continue;
 215
 216                 nv_mask(dev, 0x003004 + (i * 8), 0x00000001, 0x00000000);
 217                 nv_wr32(dev, 0x002634, i);
 218                 if (!nv_wait(dev, 0x002634, 0xffffffff, i)) {
 219                         NV_INFO(dev, "PFIFO: kick ch %d failed: 0x%08x\n",
 220                                 i, nv_rd32(dev, 0x002634));
 221                         return -EBUSY;
 222                 }
 223         }
 224
 225         return 0;
 226 }
 227
 228 static void
 229 nvc0_fifo_destroy(struct drm_device *dev)
 230 {
 231         struct drm_nouveau_private *dev_priv = dev->dev_private;
 232         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 233         struct nvc0_fifo_priv *priv;
 234
 235         priv = pfifo->priv;
 236         if (!priv)
 237                 return;
 238
 239         nouveau_vm_put(&priv->user_vma);
 240         nouveau_gpuobj_ref(NULL, &priv->playlist[1]);
 241         nouveau_gpuobj_ref(NULL, &priv->playlist[0]);
 242         kfree(priv);
 243 }
 244
 245 void
 246 nvc0_fifo_takedown(struct drm_device *dev)
 247 {
 248         nv_wr32(dev, 0x002140, 0x00000000);
 249         nvc0_fifo_destroy(dev);
 250 }
 251
 252 static int
 253 nvc0_fifo_create(struct drm_device *dev)
 254 {
 255         struct drm_nouveau_private *dev_priv = dev->dev_private;
 256         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 257         struct nvc0_fifo_priv *priv;
 258         int ret;
 259
 260         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 261         if (!priv)
 262                 return -ENOMEM;
 263         pfifo->priv = priv;
 264
 265         ret = nouveau_gpuobj_new(dev, NULL, 0x1000, 0x1000, 0,
 266                                  &priv->playlist[0]);
 267         if (ret)
 268                 goto error;
 269
 270         ret = nouveau_gpuobj_new(dev, NULL, 0x1000, 0x1000, 0,
 271                                  &priv->playlist[1]);
 272         if (ret)
 273                 goto error;
 274
 275         ret = nouveau_vm_get(dev_priv->bar1_vm, pfifo->channels * 0x1000,
 276                              12, NV_MEM_ACCESS_RW, &priv->user_vma);
 277         if (ret)
 278                 goto error;
 279
 280         nouveau_irq_register(dev, 8, nvc0_fifo_isr);
 281         NVOBJ_CLASS(dev, 0x506e, SW); /* nvsw */
 282         return 0;
 283
 284 error:
 285         nvc0_fifo_destroy(dev);
 286         return ret;
 287 }
 288
 289 int
 290 nvc0_fifo_init(struct drm_device *dev)
 291 {
 292         struct drm_nouveau_private *dev_priv = dev->dev_private;
 293         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 294         struct nouveau_channel *chan;
 295         struct nvc0_fifo_priv *priv;
 296         int ret, i;
 297
 298         if (!pfifo->priv) {
 299                 ret = nvc0_fifo_create(dev);
 300                 if (ret)
 301                         return ret;
 302         }
 303         priv = pfifo->priv;
 304
 305         /* reset PFIFO, enable all available PSUBFIFO areas */
 306         nv_mask(dev, 0x000200, 0x00000100, 0x00000000);
 307         nv_mask(dev, 0x000200, 0x00000100, 0x00000100);
 308         nv_wr32(dev, 0x000204, 0xffffffff);
 309         nv_wr32(dev, 0x002204, 0xffffffff);
 310
 311         priv->spoon_nr = hweight32(nv_rd32(dev, 0x002204));
 312         NV_DEBUG(dev, "PFIFO: %d subfifo(s)\n", priv->spoon_nr);
 313
 314         /* assign engines to subfifos */
 315         if (priv->spoon_nr >= 3) {
 316                 nv_wr32(dev, 0x002208, ~(1 << 0)); /* PGRAPH */
 317                 nv_wr32(dev, 0x00220c, ~(1 << 1)); /* PVP */
 318                 nv_wr32(dev, 0x002210, ~(1 << 1)); /* PPP */
 319                 nv_wr32(dev, 0x002214, ~(1 << 1)); /* PBSP */
 320                 nv_wr32(dev, 0x002218, ~(1 << 2)); /* PCE0 */
 321                 nv_wr32(dev, 0x00221c, ~(1 << 1)); /* PCE1 */
 322         }
 323
 324         /* PSUBFIFO[n] */
 325         for (i = 0; i < 3; i++) {
 326                 nv_mask(dev, 0x04013c + (i * 0x2000), 0x10000100, 0x00000000);
 327                 nv_wr32(dev, 0x040108 + (i * 0x2000), 0xffffffff); /* INTR */
 328                 nv_wr32(dev, 0x04010c + (i * 0x2000), 0xfffffeff); /* INTR_EN */
 329         }
 330
 331         nv_mask(dev, 0x002200, 0x00000001, 0x00000001);
 332         nv_wr32(dev, 0x002254, 0x10000000 | priv->user_vma.offset >> 12);
 333
 334         nv_wr32(dev, 0x002a00, 0xffffffff); /* clears PFIFO.INTR bit 30 */
 335         nv_wr32(dev, 0x002100, 0xffffffff);
 336         nv_wr32(dev, 0x002140, 0xbfffffff);
 337
 338         /* restore PFIFO context table */
 339         for (i = 0; i < 128; i++) {
 340                 chan = dev_priv->channels.ptr[i];
 341                 if (!chan || !chan->fifo_priv)
 342                         continue;
 343
 344                 nv_wr32(dev, 0x003000 + (i * 8), 0xc0000000 |
 345                                                  (chan->ramin->vinst >> 12));
 346                 nv_wr32(dev, 0x003004 + (i * 8), 0x001f0001);
 347         }
 348         nvc0_fifo_playlist_update(dev);
 349
 350         return 0;
 351 }
 352
 353 struct nouveau_enum nvc0_fifo_fault_unit[] = {
 354         { 0x00, "PGRAPH" },
 355         { 0x03, "PEEPHOLE" },
 356         { 0x04, "BAR1" },
 357         { 0x05, "BAR3" },
 358         { 0x07, "PFIFO" },
 359         { 0x10, "PBSP" },
 360         { 0x11, "PPPP" },
 361         { 0x13, "PCOUNTER" },
 362         { 0x14, "PVP" },
 363         { 0x15, "PCOPY0" },
 364         { 0x16, "PCOPY1" },
 365         { 0x17, "PDAEMON" },
 366         {}
 367 };
 368
 369 struct nouveau_enum nvc0_fifo_fault_reason[] = {
 370         { 0x00, "PT_NOT_PRESENT" },
 371         { 0x01, "PT_TOO_SHORT" },
 372         { 0x02, "PAGE_NOT_PRESENT" },
 373         { 0x03, "VM_LIMIT_EXCEEDED" },
 374         { 0x04, "NO_CHANNEL" },
 375         { 0x05, "PAGE_SYSTEM_ONLY" },
 376         { 0x06, "PAGE_READ_ONLY" },
 377         { 0x0a, "COMPRESSED_SYSRAM" },
 378         { 0x0c, "INVALID_STORAGE_TYPE" },
 379         {}
 380 };
 381
 382 struct nouveau_enum nvc0_fifo_fault_hubclient[] = {
 383         { 0x01, "PCOPY0" },
 384         { 0x02, "PCOPY1" },
 385         { 0x04, "DISPATCH" },
 386         { 0x05, "CTXCTL" },
 387         { 0x06, "PFIFO" },
 388         { 0x07, "BAR_READ" },
 389         { 0x08, "BAR_WRITE" },
 390         { 0x0b, "PVP" },
 391         { 0x0c, "PPPP" },
 392         { 0x0d, "PBSP" },
 393         { 0x11, "PCOUNTER" },
 394         { 0x12, "PDAEMON" },
 395         { 0x14, "CCACHE" },
 396         { 0x15, "CCACHE_POST" },
 397         {}
 398 };
 399
 400 struct nouveau_enum nvc0_fifo_fault_gpcclient[] = {
 401         { 0x01, "TEX" },
 402         { 0x0c, "ESETUP" },
 403         { 0x0e, "CTXCTL" },
 404         { 0x0f, "PROP" },
 405         {}
 406 };
 407
 408 struct nouveau_bitfield nvc0_fifo_subfifo_intr[] = {
 409 /*      { 0x00008000, "" }      seen with null ib push */
 410         { 0x00200000, "ILLEGAL_MTHD" },
 411         { 0x00800000, "EMPTY_SUBC" },
 412         {}
 413 };
 414
 415 static void
 416 nvc0_fifo_isr_vm_fault(struct drm_device *dev, int unit)
 417 {
 418         u32 inst = nv_rd32(dev, 0x2800 + (unit * 0x10));
 419         u32 valo = nv_rd32(dev, 0x2804 + (unit * 0x10));
 420         u32 vahi = nv_rd32(dev, 0x2808 + (unit * 0x10));
 421         u32 stat = nv_rd32(dev, 0x280c + (unit * 0x10));
 422         u32 client = (stat & 0x00001f00) >> 8;
 423
 424         NV_INFO(dev, "PFIFO: %s fault at 0x%010llx [",
 425                 (stat & 0x00000080) ? "write" : "read", (u64)vahi << 32 | valo);
 426         nouveau_enum_print(nvc0_fifo_fault_reason, stat & 0x0000000f);
 427         printk("] from ");
 428         nouveau_enum_print(nvc0_fifo_fault_unit, unit);
 429         if (stat & 0x00000040) {
 430                 printk("/");
 431                 nouveau_enum_print(nvc0_fifo_fault_hubclient, client);
 432         } else {
 433                 printk("/GPC%d/", (stat & 0x1f000000) >> 24);
 434                 nouveau_enum_print(nvc0_fifo_fault_gpcclient, client);
 435         }
 436         printk(" on channel 0x%010llx\n", (u64)inst << 12);
 437 }
 438
 439 static void
 440 nvc0_fifo_isr_subfifo_intr(struct drm_device *dev, int unit)
 441 {
 442         u32 stat = nv_rd32(dev, 0x040108 + (unit * 0x2000));
 443         u32 addr = nv_rd32(dev, 0x0400c0 + (unit * 0x2000));
 444         u32 data = nv_rd32(dev, 0x0400c4 + (unit * 0x2000));
 445         u32 chid = nv_rd32(dev, 0x040120 + (unit * 0x2000)) & 0x7f;
 446         u32 subc = (addr & 0x00070000);
 447         u32 mthd = (addr & 0x00003ffc);
 448
 449         NV_INFO(dev, "PSUBFIFO %d:", unit);
 450         nouveau_bitfield_print(nvc0_fifo_subfifo_intr, stat);
 451         NV_INFO(dev, "PSUBFIFO %d: ch %d subc %d mthd 0x%04x data 0x%08x\n",
 452                 unit, chid, subc, mthd, data);
 453
 454         nv_wr32(dev, 0x0400c0 + (unit * 0x2000), 0x80600008);
 455         nv_wr32(dev, 0x040108 + (unit * 0x2000), stat);
 456 }
 457
 458 static void
 459 nvc0_fifo_isr(struct drm_device *dev)
 460 {
 461         u32 stat = nv_rd32(dev, 0x002100);
 462
 463         if (stat & 0x00000100) {
 464                 NV_INFO(dev, "PFIFO: unknown status 0x00000100\n");
 465                 nv_wr32(dev, 0x002100, 0x00000100);
 466                 stat &= ~0x00000100;
 467         }
 468
 469         if (stat & 0x10000000) {
 470                 u32 units = nv_rd32(dev, 0x00259c);
 471                 u32 u = units;
 472
 473                 while (u) {
 474                         int i = ffs(u) - 1;
 475                         nvc0_fifo_isr_vm_fault(dev, i);
 476                         u &= ~(1 << i);
 477                 }
 478
 479                 nv_wr32(dev, 0x00259c, units);
 480                 stat &= ~0x10000000;
 481         }
 482
 483         if (stat & 0x20000000) {
 484                 u32 units = nv_rd32(dev, 0x0025a0);
 485                 u32 u = units;
 486
 487                 while (u) {
 488                         int i = ffs(u) - 1;
 489                         nvc0_fifo_isr_subfifo_intr(dev, i);
 490                         u &= ~(1 << i);
 491                 }
 492
 493                 nv_wr32(dev, 0x0025a0, units);
 494                 stat &= ~0x20000000;
 495         }
 496
 497         if (stat & 0x40000000) {
 498                 NV_INFO(dev, "PFIFO: unknown status 0x40000000\n");
 499                 nv_mask(dev, 0x002a00, 0x00000000, 0x00000000);
 500                 stat &= ~0x40000000;
 501         }
 502
 503         if (stat) {
 504                 NV_INFO(dev, "PFIFO: unhandled status 0x%08x\n", stat);
 505                 nv_wr32(dev, 0x002100, stat);
 506                 nv_wr32(dev, 0x002140, 0);
 507         }
 508 }