drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.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 #include "gk104.h"
  25 #include "changk104.h"
  26
  27 #include <core/client.h>
  28 #include <core/enum.h>
  29 #include <core/gpuobj.h>
  30 #include <subdev/bar.h>
  31 #include <engine/sw.h>
  32
  33 #include <nvif/class.h>
  34
  35 void
  36 gk104_fifo_uevent_fini(struct nvkm_fifo *fifo)
  37 {
  38         struct nvkm_device *device = fifo->engine.subdev.device;
  39         nvkm_mask(device, 0x002140, 0x80000000, 0x00000000);
  40 }
  41
  42 void
  43 gk104_fifo_uevent_init(struct nvkm_fifo *fifo)
  44 {
  45         struct nvkm_device *device = fifo->engine.subdev.device;
  46         nvkm_mask(device, 0x002140, 0x80000000, 0x80000000);
  47 }
  48
  49 void
  50 gk104_fifo_runlist_update(struct gk104_fifo *fifo, u32 engine)
  51 {
  52         struct gk104_fifo_engn *engn = &fifo->engine[engine];
  53         struct gk104_fifo_chan *chan;
  54         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
  55         struct nvkm_device *device = subdev->device;
  56         struct nvkm_memory *cur;
  57         int nr = 0;
  58
  59         mutex_lock(&subdev->mutex);
  60         cur = engn->runlist[engn->cur_runlist];
  61         engn->cur_runlist = !engn->cur_runlist;
  62
  63         nvkm_kmap(cur);
  64         list_for_each_entry(chan, &engn->chan, head) {
  65                 nvkm_wo32(cur, (nr * 8) + 0, chan->base.chid);
  66                 nvkm_wo32(cur, (nr * 8) + 4, 0x00000000);
  67                 nr++;
  68         }
  69         nvkm_done(cur);
  70
  71         nvkm_wr32(device, 0x002270, nvkm_memory_addr(cur) >> 12);
  72         nvkm_wr32(device, 0x002274, (engine << 20) | nr);
  73
  74         if (wait_event_timeout(engn->wait, !(nvkm_rd32(device, 0x002284 +
  75                                (engine * 0x08)) & 0x00100000),
  76                                 msecs_to_jiffies(2000)) == 0)
  77                 nvkm_error(subdev, "runlist %d update timeout\n", engine);
  78         mutex_unlock(&subdev->mutex);
  79 }
  80
  81 static inline struct nvkm_engine *
  82 gk104_fifo_engine(struct gk104_fifo *fifo, u32 engn)
  83 {
  84         struct nvkm_device *device = fifo->base.engine.subdev.device;
  85         u64 subdevs = gk104_fifo_engine_subdev(engn);
  86         if (subdevs)
  87                 return nvkm_device_engine(device, __ffs(subdevs));
  88         return NULL;
  89 }
  90
  91 static void
  92 gk104_fifo_recover_work(struct work_struct *work)
  93 {
  94         struct gk104_fifo *fifo = container_of(work, typeof(*fifo), fault);
  95         struct nvkm_device *device = fifo->base.engine.subdev.device;
  96         struct nvkm_engine *engine;
  97         unsigned long flags;
  98         u32 engn, engm = 0;
  99         u64 mask, todo;
 100
 101         spin_lock_irqsave(&fifo->base.lock, flags);
 102         mask = fifo->mask;
 103         fifo->mask = 0ULL;
 104         spin_unlock_irqrestore(&fifo->base.lock, flags);
 105
 106         for (todo = mask; engn = __ffs64(todo), todo; todo &= ~(1 << engn))
 107                 engm |= 1 << gk104_fifo_subdev_engine(engn);
 108         nvkm_mask(device, 0x002630, engm, engm);
 109
 110         for (todo = mask; engn = __ffs64(todo), todo; todo &= ~(1 << engn)) {
 111                 if ((engine = nvkm_device_engine(device, engn))) {
 112                         nvkm_subdev_fini(&engine->subdev, false);
 113                         WARN_ON(nvkm_subdev_init(&engine->subdev));
 114                 }
 115                 gk104_fifo_runlist_update(fifo, gk104_fifo_subdev_engine(engn));
 116         }
 117
 118         nvkm_wr32(device, 0x00262c, engm);
 119         nvkm_mask(device, 0x002630, engm, 0x00000000);
 120 }
 121
 122 static void
 123 gk104_fifo_recover(struct gk104_fifo *fifo, struct nvkm_engine *engine,
 124                   struct gk104_fifo_chan *chan)
 125 {
 126         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
 127         struct nvkm_device *device = subdev->device;
 128         u32 chid = chan->base.chid;
 129
 130         nvkm_error(subdev, "%s engine fault on channel %d, recovering...\n",
 131                    nvkm_subdev_name[engine->subdev.index], chid);
 132         assert_spin_locked(&fifo->base.lock);
 133
 134         nvkm_mask(device, 0x800004 + (chid * 0x08), 0x00000800, 0x00000800);
 135         list_del_init(&chan->head);
 136         chan->killed = true;
 137
 138         fifo->mask |= 1ULL << engine->subdev.index;
 139         schedule_work(&fifo->fault);
 140 }
 141
 142 static const struct nvkm_enum
 143 gk104_fifo_bind_reason[] = {
 144         { 0x01, "BIND_NOT_UNBOUND" },
 145         { 0x02, "SNOOP_WITHOUT_BAR1" },
 146         { 0x03, "UNBIND_WHILE_RUNNING" },
 147         { 0x05, "INVALID_RUNLIST" },
 148         { 0x06, "INVALID_CTX_TGT" },
 149         { 0x0b, "UNBIND_WHILE_PARKED" },
 150         {}
 151 };
 152
 153 static void
 154 gk104_fifo_intr_bind(struct gk104_fifo *fifo)
 155 {
 156         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
 157         struct nvkm_device *device = subdev->device;
 158         u32 intr = nvkm_rd32(device, 0x00252c);
 159         u32 code = intr & 0x000000ff;
 160         const struct nvkm_enum *en =
 161                 nvkm_enum_find(gk104_fifo_bind_reason, code);
 162
 163         nvkm_error(subdev, "BIND_ERROR %02x [%s]\n", code, en ? en->name : "");
 164 }
 165
 166 static const struct nvkm_enum
 167 gk104_fifo_sched_reason[] = {
 168         { 0x0a, "CTXSW_TIMEOUT" },
 169         {}
 170 };
 171
 172 static void
 173 gk104_fifo_intr_sched_ctxsw(struct gk104_fifo *fifo)
 174 {
 175         struct nvkm_device *device = fifo->base.engine.subdev.device;
 176         struct nvkm_engine *engine;
 177         struct gk104_fifo_chan *chan;
 178         unsigned long flags;
 179         u32 engn;
 180
 181         spin_lock_irqsave(&fifo->base.lock, flags);
 182         for (engn = 0; engn < ARRAY_SIZE(fifo->engine); engn++) {
 183                 u32 stat = nvkm_rd32(device, 0x002640 + (engn * 0x04));
 184                 u32 busy = (stat & 0x80000000);
 185                 u32 next = (stat & 0x07ff0000) >> 16;
 186                 u32 chsw = (stat & 0x00008000);
 187                 u32 save = (stat & 0x00004000);
 188                 u32 load = (stat & 0x00002000);
 189                 u32 prev = (stat & 0x000007ff);
 190                 u32 chid = load ? next : prev;
 191                 (void)save;
 192
 193                 if (busy && chsw) {
 194                         list_for_each_entry(chan, &fifo->engine[engn].chan, head) {
 195                                 if (chan->base.chid == chid) {
 196                                         engine = gk104_fifo_engine(fifo, engn);
 197                                         if (!engine)
 198                                                 break;
 199                                         gk104_fifo_recover(fifo, engine, chan);
 200                                         break;
 201                                 }
 202                         }
 203                 }
 204         }
 205         spin_unlock_irqrestore(&fifo->base.lock, flags);
 206 }
 207
 208 static void
 209 gk104_fifo_intr_sched(struct gk104_fifo *fifo)
 210 {
 211         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
 212         struct nvkm_device *device = subdev->device;
 213         u32 intr = nvkm_rd32(device, 0x00254c);
 214         u32 code = intr & 0x000000ff;
 215         const struct nvkm_enum *en =
 216                 nvkm_enum_find(gk104_fifo_sched_reason, code);
 217
 218         nvkm_error(subdev, "SCHED_ERROR %02x [%s]\n", code, en ? en->name : "");
 219
 220         switch (code) {
 221         case 0x0a:
 222                 gk104_fifo_intr_sched_ctxsw(fifo);
 223                 break;
 224         default:
 225                 break;
 226         }
 227 }
 228
 229 static void
 230 gk104_fifo_intr_chsw(struct gk104_fifo *fifo)
 231 {
 232         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
 233         struct nvkm_device *device = subdev->device;
 234         u32 stat = nvkm_rd32(device, 0x00256c);
 235         nvkm_error(subdev, "CHSW_ERROR %08x\n", stat);
 236         nvkm_wr32(device, 0x00256c, stat);
 237 }
 238
 239 static void
 240 gk104_fifo_intr_dropped_fault(struct gk104_fifo *fifo)
 241 {
 242         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
 243         struct nvkm_device *device = subdev->device;
 244         u32 stat = nvkm_rd32(device, 0x00259c);
 245         nvkm_error(subdev, "DROPPED_MMU_FAULT %08x\n", stat);
 246 }
 247
 248 static const struct nvkm_enum
 249 gk104_fifo_fault_engine[] = {
 250         { 0x00, "GR", NULL, NVKM_ENGINE_GR },
 251         { 0x03, "IFB", NULL, NVKM_ENGINE_IFB },
 252         { 0x04, "BAR1", NULL, NVKM_SUBDEV_BAR },
 253         { 0x05, "BAR3", NULL, NVKM_SUBDEV_INSTMEM },
 254         { 0x07, "PBDMA0", NULL, NVKM_ENGINE_FIFO },
 255         { 0x08, "PBDMA1", NULL, NVKM_ENGINE_FIFO },
 256         { 0x09, "PBDMA2", NULL, NVKM_ENGINE_FIFO },
 257         { 0x10, "MSVLD", NULL, NVKM_ENGINE_MSVLD },
 258         { 0x11, "MSPPP", NULL, NVKM_ENGINE_MSPPP },
 259         { 0x13, "PERF" },
 260         { 0x14, "MSPDEC", NULL, NVKM_ENGINE_MSPDEC },
 261         { 0x15, "CE0", NULL, NVKM_ENGINE_CE0 },
 262         { 0x16, "CE1", NULL, NVKM_ENGINE_CE1 },
 263         { 0x17, "PMU" },
 264         { 0x19, "MSENC", NULL, NVKM_ENGINE_MSENC },
 265         { 0x1b, "CE2", NULL, NVKM_ENGINE_CE2 },
 266         {}
 267 };
 268
 269 static const struct nvkm_enum
 270 gk104_fifo_fault_reason[] = {
 271         { 0x00, "PDE" },
 272         { 0x01, "PDE_SIZE" },
 273         { 0x02, "PTE" },
 274         { 0x03, "VA_LIMIT_VIOLATION" },
 275         { 0x04, "UNBOUND_INST_BLOCK" },
 276         { 0x05, "PRIV_VIOLATION" },
 277         { 0x06, "RO_VIOLATION" },
 278         { 0x07, "WO_VIOLATION" },
 279         { 0x08, "PITCH_MASK_VIOLATION" },
 280         { 0x09, "WORK_CREATION" },
 281         { 0x0a, "UNSUPPORTED_APERTURE" },
 282         { 0x0b, "COMPRESSION_FAILURE" },
 283         { 0x0c, "UNSUPPORTED_KIND" },
 284         { 0x0d, "REGION_VIOLATION" },
 285         { 0x0e, "BOTH_PTES_VALID" },
 286         { 0x0f, "INFO_TYPE_POISONED" },
 287         {}
 288 };
 289
 290 static const struct nvkm_enum
 291 gk104_fifo_fault_hubclient[] = {
 292         { 0x00, "VIP" },
 293         { 0x01, "CE0" },
 294         { 0x02, "CE1" },
 295         { 0x03, "DNISO" },
 296         { 0x04, "FE" },
 297         { 0x05, "FECS" },
 298         { 0x06, "HOST" },
 299         { 0x07, "HOST_CPU" },
 300         { 0x08, "HOST_CPU_NB" },
 301         { 0x09, "ISO" },
 302         { 0x0a, "MMU" },
 303         { 0x0b, "MSPDEC" },
 304         { 0x0c, "MSPPP" },
 305         { 0x0d, "MSVLD" },
 306         { 0x0e, "NISO" },
 307         { 0x0f, "P2P" },
 308         { 0x10, "PD" },
 309         { 0x11, "PERF" },
 310         { 0x12, "PMU" },
 311         { 0x13, "RASTERTWOD" },
 312         { 0x14, "SCC" },
 313         { 0x15, "SCC_NB" },
 314         { 0x16, "SEC" },
 315         { 0x17, "SSYNC" },
 316         { 0x18, "GR_CE" },
 317         { 0x19, "CE2" },
 318         { 0x1a, "XV" },
 319         { 0x1b, "MMU_NB" },
 320         { 0x1c, "MSENC" },
 321         { 0x1d, "DFALCON" },
 322         { 0x1e, "SKED" },
 323         { 0x1f, "AFALCON" },
 324         {}
 325 };
 326
 327 static const struct nvkm_enum
 328 gk104_fifo_fault_gpcclient[] = {
 329         { 0x00, "L1_0" }, { 0x01, "T1_0" }, { 0x02, "PE_0" },
 330         { 0x03, "L1_1" }, { 0x04, "T1_1" }, { 0x05, "PE_1" },
 331         { 0x06, "L1_2" }, { 0x07, "T1_2" }, { 0x08, "PE_2" },
 332         { 0x09, "L1_3" }, { 0x0a, "T1_3" }, { 0x0b, "PE_3" },
 333         { 0x0c, "RAST" },
 334         { 0x0d, "GCC" },
 335         { 0x0e, "GPCCS" },
 336         { 0x0f, "PROP_0" },
 337         { 0x10, "PROP_1" },
 338         { 0x11, "PROP_2" },
 339         { 0x12, "PROP_3" },
 340         { 0x13, "L1_4" }, { 0x14, "T1_4" }, { 0x15, "PE_4" },
 341         { 0x16, "L1_5" }, { 0x17, "T1_5" }, { 0x18, "PE_5" },
 342         { 0x19, "L1_6" }, { 0x1a, "T1_6" }, { 0x1b, "PE_6" },
 343         { 0x1c, "L1_7" }, { 0x1d, "T1_7" }, { 0x1e, "PE_7" },
 344         { 0x1f, "GPM" },
 345         { 0x20, "LTP_UTLB_0" },
 346         { 0x21, "LTP_UTLB_1" },
 347         { 0x22, "LTP_UTLB_2" },
 348         { 0x23, "LTP_UTLB_3" },
 349         { 0x24, "GPC_RGG_UTLB" },
 350         {}
 351 };
 352
 353 static void
 354 gk104_fifo_intr_fault(struct gk104_fifo *fifo, int unit)
 355 {
 356         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
 357         struct nvkm_device *device = subdev->device;
 358         u32 inst = nvkm_rd32(device, 0x002800 + (unit * 0x10));
 359         u32 valo = nvkm_rd32(device, 0x002804 + (unit * 0x10));
 360         u32 vahi = nvkm_rd32(device, 0x002808 + (unit * 0x10));
 361         u32 stat = nvkm_rd32(device, 0x00280c + (unit * 0x10));
 362         u32 gpc    = (stat & 0x1f000000) >> 24;
 363         u32 client = (stat & 0x00001f00) >> 8;
 364         u32 write  = (stat & 0x00000080);
 365         u32 hub    = (stat & 0x00000040);
 366         u32 reason = (stat & 0x0000000f);
 367         const struct nvkm_enum *er, *eu, *ec;
 368         struct nvkm_engine *engine = NULL;
 369         struct nvkm_fifo_chan *chan;
 370         unsigned long flags;
 371         char gpcid[8] = "";
 372
 373         er = nvkm_enum_find(gk104_fifo_fault_reason, reason);
 374         eu = nvkm_enum_find(gk104_fifo_fault_engine, unit);
 375         if (hub) {
 376                 ec = nvkm_enum_find(gk104_fifo_fault_hubclient, client);
 377         } else {
 378                 ec = nvkm_enum_find(gk104_fifo_fault_gpcclient, client);
 379                 snprintf(gpcid, sizeof(gpcid), "GPC%d/", gpc);
 380         }
 381
 382         if (eu) {
 383                 switch (eu->data2) {
 384                 case NVKM_SUBDEV_BAR:
 385                         nvkm_mask(device, 0x001704, 0x00000000, 0x00000000);
 386                         break;
 387                 case NVKM_SUBDEV_INSTMEM:
 388                         nvkm_mask(device, 0x001714, 0x00000000, 0x00000000);
 389                         break;
 390                 case NVKM_ENGINE_IFB:
 391                         nvkm_mask(device, 0x001718, 0x00000000, 0x00000000);
 392                         break;
 393                 default:
 394                         engine = nvkm_device_engine(device, eu->data2);
 395                         break;
 396                 }
 397         }
 398
 399         chan = nvkm_fifo_chan_inst(&fifo->base, (u64)inst << 12, &flags);
 400
 401         nvkm_error(subdev,
 402                    "%s fault at %010llx engine %02x [%s] client %02x [%s%s] "
 403                    "reason %02x [%s] on channel %d [%010llx %s]\n",
 404                    write ? "write" : "read", (u64)vahi << 32 | valo,
 405                    unit, eu ? eu->name : "", client, gpcid, ec ? ec->name : "",
 406                    reason, er ? er->name : "", chan ? chan->chid : -1,
 407                    (u64)inst << 12,
 408                    chan ? chan->object.client->name : "unknown");
 409
 410         if (engine && chan)
 411                 gk104_fifo_recover(fifo, engine, (void *)chan);
 412         nvkm_fifo_chan_put(&fifo->base, flags, &chan);
 413 }
 414
 415 static const struct nvkm_bitfield gk104_fifo_pbdma_intr_0[] = {
 416         { 0x00000001, "MEMREQ" },
 417         { 0x00000002, "MEMACK_TIMEOUT" },
 418         { 0x00000004, "MEMACK_EXTRA" },
 419         { 0x00000008, "MEMDAT_TIMEOUT" },
 420         { 0x00000010, "MEMDAT_EXTRA" },
 421         { 0x00000020, "MEMFLUSH" },
 422         { 0x00000040, "MEMOP" },
 423         { 0x00000080, "LBCONNECT" },
 424         { 0x00000100, "LBREQ" },
 425         { 0x00000200, "LBACK_TIMEOUT" },
 426         { 0x00000400, "LBACK_EXTRA" },
 427         { 0x00000800, "LBDAT_TIMEOUT" },
 428         { 0x00001000, "LBDAT_EXTRA" },
 429         { 0x00002000, "GPFIFO" },
 430         { 0x00004000, "GPPTR" },
 431         { 0x00008000, "GPENTRY" },
 432         { 0x00010000, "GPCRC" },
 433         { 0x00020000, "PBPTR" },
 434         { 0x00040000, "PBENTRY" },
 435         { 0x00080000, "PBCRC" },
 436         { 0x00100000, "XBARCONNECT" },
 437         { 0x00200000, "METHOD" },
 438         { 0x00400000, "METHODCRC" },
 439         { 0x00800000, "DEVICE" },
 440         { 0x02000000, "SEMAPHORE" },
 441         { 0x04000000, "ACQUIRE" },
 442         { 0x08000000, "PRI" },
 443         { 0x20000000, "NO_CTXSW_SEG" },
 444         { 0x40000000, "PBSEG" },
 445         { 0x80000000, "SIGNATURE" },
 446         {}
 447 };
 448
 449 static void
 450 gk104_fifo_intr_pbdma_0(struct gk104_fifo *fifo, int unit)
 451 {
 452         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
 453         struct nvkm_device *device = subdev->device;
 454         u32 mask = nvkm_rd32(device, 0x04010c + (unit * 0x2000));
 455         u32 stat = nvkm_rd32(device, 0x040108 + (unit * 0x2000)) & mask;
 456         u32 addr = nvkm_rd32(device, 0x0400c0 + (unit * 0x2000));
 457         u32 data = nvkm_rd32(device, 0x0400c4 + (unit * 0x2000));
 458         u32 chid = nvkm_rd32(device, 0x040120 + (unit * 0x2000)) & 0xfff;
 459         u32 subc = (addr & 0x00070000) >> 16;
 460         u32 mthd = (addr & 0x00003ffc);
 461         u32 show = stat;
 462         struct nvkm_fifo_chan *chan;
 463         unsigned long flags;
 464         char msg[128];
 465
 466         if (stat & 0x00800000) {
 467                 if (device->sw) {
 468                         if (nvkm_sw_mthd(device->sw, chid, subc, mthd, data))
 469                                 show &= ~0x00800000;
 470                 }
 471                 nvkm_wr32(device, 0x0400c0 + (unit * 0x2000), 0x80600008);
 472         }
 473
 474         if (show) {
 475                 nvkm_snprintbf(msg, sizeof(msg), gk104_fifo_pbdma_intr_0, show);
 476                 chan = nvkm_fifo_chan_chid(&fifo->base, chid, &flags);
 477                 nvkm_error(subdev, "PBDMA%d: %08x [%s] ch %d [%010llx %s] "
 478                                    "subc %d mthd %04x data %08x\n",
 479                            unit, show, msg, chid, chan ? chan->inst->addr : 0,
 480                            chan ? chan->object.client->name : "unknown",
 481                            subc, mthd, data);
 482                 nvkm_fifo_chan_put(&fifo->base, flags, &chan);
 483         }
 484
 485         nvkm_wr32(device, 0x040108 + (unit * 0x2000), stat);
 486 }
 487
 488 static const struct nvkm_bitfield gk104_fifo_pbdma_intr_1[] = {
 489         { 0x00000001, "HCE_RE_ILLEGAL_OP" },
 490         { 0x00000002, "HCE_RE_ALIGNB" },
 491         { 0x00000004, "HCE_PRIV" },
 492         { 0x00000008, "HCE_ILLEGAL_MTHD" },
 493         { 0x00000010, "HCE_ILLEGAL_CLASS" },
 494         {}
 495 };
 496
 497 static void
 498 gk104_fifo_intr_pbdma_1(struct gk104_fifo *fifo, int unit)
 499 {
 500         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
 501         struct nvkm_device *device = subdev->device;
 502         u32 mask = nvkm_rd32(device, 0x04014c + (unit * 0x2000));
 503         u32 stat = nvkm_rd32(device, 0x040148 + (unit * 0x2000)) & mask;
 504         u32 chid = nvkm_rd32(device, 0x040120 + (unit * 0x2000)) & 0xfff;
 505         char msg[128];
 506
 507         if (stat) {
 508                 nvkm_snprintbf(msg, sizeof(msg), gk104_fifo_pbdma_intr_1, stat);
 509                 nvkm_error(subdev, "PBDMA%d: %08x [%s] ch %d %08x %08x\n",
 510                            unit, stat, msg, chid,
 511                            nvkm_rd32(device, 0x040150 + (unit * 0x2000)),
 512                            nvkm_rd32(device, 0x040154 + (unit * 0x2000)));
 513         }
 514
 515         nvkm_wr32(device, 0x040148 + (unit * 0x2000), stat);
 516 }
 517
 518 static void
 519 gk104_fifo_intr_runlist(struct gk104_fifo *fifo)
 520 {
 521         struct nvkm_device *device = fifo->base.engine.subdev.device;
 522         u32 mask = nvkm_rd32(device, 0x002a00);
 523         while (mask) {
 524                 u32 engn = __ffs(mask);
 525                 wake_up(&fifo->engine[engn].wait);
 526                 nvkm_wr32(device, 0x002a00, 1 << engn);
 527                 mask &= ~(1 << engn);
 528         }
 529 }
 530
 531 static void
 532 gk104_fifo_intr_engine(struct gk104_fifo *fifo)
 533 {
 534         nvkm_fifo_uevent(&fifo->base);
 535 }
 536
 537 void
 538 gk104_fifo_intr(struct nvkm_fifo *base)
 539 {
 540         struct gk104_fifo *fifo = gk104_fifo(base);
 541         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
 542         struct nvkm_device *device = subdev->device;
 543         u32 mask = nvkm_rd32(device, 0x002140);
 544         u32 stat = nvkm_rd32(device, 0x002100) & mask;
 545
 546         if (stat & 0x00000001) {
 547                 gk104_fifo_intr_bind(fifo);
 548                 nvkm_wr32(device, 0x002100, 0x00000001);
 549                 stat &= ~0x00000001;
 550         }
 551
 552         if (stat & 0x00000010) {
 553                 nvkm_error(subdev, "PIO_ERROR\n");
 554                 nvkm_wr32(device, 0x002100, 0x00000010);
 555                 stat &= ~0x00000010;
 556         }
 557
 558         if (stat & 0x00000100) {
 559                 gk104_fifo_intr_sched(fifo);
 560                 nvkm_wr32(device, 0x002100, 0x00000100);
 561                 stat &= ~0x00000100;
 562         }
 563
 564         if (stat & 0x00010000) {
 565                 gk104_fifo_intr_chsw(fifo);
 566                 nvkm_wr32(device, 0x002100, 0x00010000);
 567                 stat &= ~0x00010000;
 568         }
 569
 570         if (stat & 0x00800000) {
 571                 nvkm_error(subdev, "FB_FLUSH_TIMEOUT\n");
 572                 nvkm_wr32(device, 0x002100, 0x00800000);
 573                 stat &= ~0x00800000;
 574         }
 575
 576         if (stat & 0x01000000) {
 577                 nvkm_error(subdev, "LB_ERROR\n");
 578                 nvkm_wr32(device, 0x002100, 0x01000000);
 579                 stat &= ~0x01000000;
 580         }
 581
 582         if (stat & 0x08000000) {
 583                 gk104_fifo_intr_dropped_fault(fifo);
 584                 nvkm_wr32(device, 0x002100, 0x08000000);
 585                 stat &= ~0x08000000;
 586         }
 587
 588         if (stat & 0x10000000) {
 589                 u32 mask = nvkm_rd32(device, 0x00259c);
 590                 while (mask) {
 591                         u32 unit = __ffs(mask);
 592                         gk104_fifo_intr_fault(fifo, unit);
 593                         nvkm_wr32(device, 0x00259c, (1 << unit));
 594                         mask &= ~(1 << unit);
 595                 }
 596                 stat &= ~0x10000000;
 597         }
 598
 599         if (stat & 0x20000000) {
 600                 u32 mask = nvkm_rd32(device, 0x0025a0);
 601                 while (mask) {
 602                         u32 unit = __ffs(mask);
 603                         gk104_fifo_intr_pbdma_0(fifo, unit);
 604                         gk104_fifo_intr_pbdma_1(fifo, unit);
 605                         nvkm_wr32(device, 0x0025a0, (1 << unit));
 606                         mask &= ~(1 << unit);
 607                 }
 608                 stat &= ~0x20000000;
 609         }
 610
 611         if (stat & 0x40000000) {
 612                 gk104_fifo_intr_runlist(fifo);
 613                 stat &= ~0x40000000;
 614         }
 615
 616         if (stat & 0x80000000) {
 617                 nvkm_wr32(device, 0x002100, 0x80000000);
 618                 gk104_fifo_intr_engine(fifo);
 619                 stat &= ~0x80000000;
 620         }
 621
 622         if (stat) {
 623                 nvkm_error(subdev, "INTR %08x\n", stat);
 624                 nvkm_mask(device, 0x002140, stat, 0x00000000);
 625                 nvkm_wr32(device, 0x002100, stat);
 626         }
 627 }
 628
 629 void
 630 gk104_fifo_fini(struct nvkm_fifo *base)
 631 {
 632         struct gk104_fifo *fifo = gk104_fifo(base);
 633         struct nvkm_device *device = fifo->base.engine.subdev.device;
 634         flush_work(&fifo->fault);
 635         /* allow mmu fault interrupts, even when we're not using fifo */
 636         nvkm_mask(device, 0x002140, 0x10000000, 0x10000000);
 637 }
 638
 639 int
 640 gk104_fifo_oneinit(struct nvkm_fifo *base)
 641 {
 642         struct gk104_fifo *fifo = gk104_fifo(base);
 643         struct nvkm_device *device = fifo->base.engine.subdev.device;
 644         int ret, i;
 645
 646         for (i = 0; i < ARRAY_SIZE(fifo->engine); i++) {
 647                 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST,
 648                                       0x8000, 0x1000, false,
 649                                       &fifo->engine[i].runlist[0]);
 650                 if (ret)
 651                         return ret;
 652
 653                 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST,
 654                                       0x8000, 0x1000, false,
 655                                       &fifo->engine[i].runlist[1]);
 656                 if (ret)
 657                         return ret;
 658
 659                 init_waitqueue_head(&fifo->engine[i].wait);
 660                 INIT_LIST_HEAD(&fifo->engine[i].chan);
 661         }
 662
 663         ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST,
 664                               fifo->base.nr * 0x200, 0x1000, true,
 665                               &fifo->user.mem);
 666         if (ret)
 667                 return ret;
 668
 669         ret = nvkm_bar_umap(device->bar, fifo->base.nr * 0x200, 12,
 670                             &fifo->user.bar);
 671         if (ret)
 672                 return ret;
 673
 674         nvkm_memory_map(fifo->user.mem, &fifo->user.bar, 0);
 675         return 0;
 676 }
 677
 678 void
 679 gk104_fifo_init(struct nvkm_fifo *base)
 680 {
 681         struct gk104_fifo *fifo = gk104_fifo(base);
 682         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
 683         struct nvkm_device *device = subdev->device;
 684         int i;
 685
 686         /* enable all available PBDMA units */
 687         nvkm_wr32(device, 0x000204, 0xffffffff);
 688         fifo->spoon_nr = hweight32(nvkm_rd32(device, 0x000204));
 689         nvkm_debug(subdev, "%d PBDMA unit(s)\n", fifo->spoon_nr);
 690
 691         /* PBDMA[n] */
 692         for (i = 0; i < fifo->spoon_nr; i++) {
 693                 nvkm_mask(device, 0x04013c + (i * 0x2000), 0x10000100, 0x00000000);
 694                 nvkm_wr32(device, 0x040108 + (i * 0x2000), 0xffffffff); /* INTR */
 695                 nvkm_wr32(device, 0x04010c + (i * 0x2000), 0xfffffeff); /* INTREN */
 696         }
 697
 698         /* PBDMA[n].HCE */
 699         for (i = 0; i < fifo->spoon_nr; i++) {
 700                 nvkm_wr32(device, 0x040148 + (i * 0x2000), 0xffffffff); /* INTR */
 701                 nvkm_wr32(device, 0x04014c + (i * 0x2000), 0xffffffff); /* INTREN */
 702         }
 703
 704         nvkm_wr32(device, 0x002254, 0x10000000 | fifo->user.bar.offset >> 12);
 705
 706         nvkm_wr32(device, 0x002100, 0xffffffff);
 707         nvkm_wr32(device, 0x002140, 0x7fffffff);
 708 }
 709
 710 void *
 711 gk104_fifo_dtor(struct nvkm_fifo *base)
 712 {
 713         struct gk104_fifo *fifo = gk104_fifo(base);
 714         int i;
 715
 716         nvkm_vm_put(&fifo->user.bar);
 717         nvkm_memory_del(&fifo->user.mem);
 718
 719         for (i = 0; i < ARRAY_SIZE(fifo->engine); i++) {
 720                 nvkm_memory_del(&fifo->engine[i].runlist[1]);
 721                 nvkm_memory_del(&fifo->engine[i].runlist[0]);
 722         }
 723
 724         return fifo;
 725 }
 726
 727 int
 728 gk104_fifo_new_(const struct nvkm_fifo_func *func, struct nvkm_device *device,
 729                 int index, int nr, struct nvkm_fifo **pfifo)
 730 {
 731         struct gk104_fifo *fifo;
 732
 733         if (!(fifo = kzalloc(sizeof(*fifo), GFP_KERNEL)))
 734                 return -ENOMEM;
 735         INIT_WORK(&fifo->fault, gk104_fifo_recover_work);
 736         *pfifo = &fifo->base;
 737
 738         return nvkm_fifo_ctor(func, device, index, nr, &fifo->base);
 739 }
 740
 741 static const struct nvkm_fifo_func
 742 gk104_fifo = {
 743         .dtor = gk104_fifo_dtor,
 744         .oneinit = gk104_fifo_oneinit,
 745         .init = gk104_fifo_init,
 746         .fini = gk104_fifo_fini,
 747         .intr = gk104_fifo_intr,
 748         .uevent_init = gk104_fifo_uevent_init,
 749         .uevent_fini = gk104_fifo_uevent_fini,
 750         .chan = {
 751                 &gk104_fifo_gpfifo_oclass,
 752                 NULL
 753         },
 754 };
 755
 756 int
 757 gk104_fifo_new(struct nvkm_device *device, int index, struct nvkm_fifo **pfifo)
 758 {
 759         return gk104_fifo_new_(&gk104_fifo, device, index, 4096, pfifo);
 760 }