drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogv100.c

   1 /*
   2  * Copyright 2018 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 #include "changk104.h"
  23 #include "cgrp.h"
  24
  25 #include <core/client.h>
  26 #include <core/gpuobj.h>
  27
  28 #include <nvif/clc36f.h>
  29 #include <nvif/unpack.h>
  30
  31 static u32
  32 gv100_fifo_gpfifo_submit_token(struct nvkm_fifo_chan *chan)
  33 {
  34         return chan->chid;
  35 }
  36
  37 static int
  38 gv100_fifo_gpfifo_engine_valid(struct gk104_fifo_chan *chan, bool ce, bool valid)
  39 {
  40         struct nvkm_subdev *subdev = &chan->base.fifo->engine.subdev;
  41         struct nvkm_device *device = subdev->device;
  42         const u32 mask = ce ? 0x00020000 : 0x00010000;
  43         const u32 data = valid ? mask : 0x00000000;
  44         int ret;
  45
  46         /* Block runlist to prevent the channel from being rescheduled. */
  47         mutex_lock(&subdev->mutex);
  48         nvkm_mask(device, 0x002630, BIT(chan->runl), BIT(chan->runl));
  49
  50         /* Preempt the channel. */
  51         ret = gk104_fifo_gpfifo_kick_locked(chan);
  52         if (ret == 0) {
  53                 /* Update engine context validity. */
  54                 nvkm_kmap(chan->base.inst);
  55                 nvkm_mo32(chan->base.inst, 0x0ac, mask, data);
  56                 nvkm_done(chan->base.inst);
  57         }
  58
  59         /* Resume runlist. */
  60         nvkm_mask(device, 0x002630, BIT(chan->runl), 0);
  61         mutex_unlock(&subdev->mutex);
  62         return ret;
  63 }
  64
  65 int
  66 gv100_fifo_gpfifo_engine_fini(struct nvkm_fifo_chan *base,
  67                               struct nvkm_engine *engine, bool suspend)
  68 {
  69         struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
  70         struct nvkm_gpuobj *inst = chan->base.inst;
  71         int ret;
  72
  73         if (engine->subdev.index >= NVKM_ENGINE_CE0 &&
  74             engine->subdev.index <= NVKM_ENGINE_CE_LAST)
  75                 return gk104_fifo_gpfifo_kick(chan);
  76
  77         ret = gv100_fifo_gpfifo_engine_valid(chan, false, false);
  78         if (ret && suspend)
  79                 return ret;
  80
  81         nvkm_kmap(inst);
  82         nvkm_wo32(inst, 0x0210, 0x00000000);
  83         nvkm_wo32(inst, 0x0214, 0x00000000);
  84         nvkm_done(inst);
  85         return ret;
  86 }
  87
  88 int
  89 gv100_fifo_gpfifo_engine_init(struct nvkm_fifo_chan *base,
  90                               struct nvkm_engine *engine)
  91 {
  92         struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
  93         struct nvkm_gpuobj *inst = chan->base.inst;
  94         u64 addr;
  95
  96         if (engine->subdev.index >= NVKM_ENGINE_CE0 &&
  97             engine->subdev.index <= NVKM_ENGINE_CE_LAST)
  98                 return 0;
  99
 100         addr = chan->engn[engine->subdev.index].vma->addr;
 101         nvkm_kmap(inst);
 102         nvkm_wo32(inst, 0x210, lower_32_bits(addr) | 0x00000004);
 103         nvkm_wo32(inst, 0x214, upper_32_bits(addr));
 104         nvkm_done(inst);
 105
 106         return gv100_fifo_gpfifo_engine_valid(chan, false, true);
 107 }
 108
 109 static const struct nvkm_fifo_chan_func
 110 gv100_fifo_gpfifo = {
 111         .dtor = gk104_fifo_gpfifo_dtor,
 112         .init = gk104_fifo_gpfifo_init,
 113         .fini = gk104_fifo_gpfifo_fini,
 114         .ntfy = gf100_fifo_chan_ntfy,
 115         .engine_ctor = gk104_fifo_gpfifo_engine_ctor,
 116         .engine_dtor = gk104_fifo_gpfifo_engine_dtor,
 117         .engine_init = gv100_fifo_gpfifo_engine_init,
 118         .engine_fini = gv100_fifo_gpfifo_engine_fini,
 119         .submit_token = gv100_fifo_gpfifo_submit_token,
 120 };
 121
 122 int
 123 gv100_fifo_gpfifo_new_(const struct nvkm_fifo_chan_func *func,
 124                        struct gk104_fifo *fifo, u64 *runlists, u16 *chid,
 125                        u64 vmm, u64 ioffset, u64 ilength, u64 *inst, bool priv,
 126                        u32 *token, const struct nvkm_oclass *oclass,
 127                        struct nvkm_object **pobject)
 128 {
 129         struct nvkm_device *device = fifo->base.engine.subdev.device;
 130         struct gk104_fifo_chan *chan;
 131         int runlist = ffs(*runlists) -1, ret, i;
 132         unsigned long engm;
 133         u64 subdevs = 0;
 134         u64 usermem, mthd;
 135         u32 size;
 136
 137         if (!vmm || runlist < 0 || runlist >= fifo->runlist_nr)
 138                 return -EINVAL;
 139         *runlists = BIT_ULL(runlist);
 140
 141         engm = fifo->runlist[runlist].engm;
 142         for_each_set_bit(i, &engm, fifo->engine_nr) {
 143                 if (fifo->engine[i].engine)
 144                         subdevs |= BIT_ULL(fifo->engine[i].engine->subdev.index);
 145         }
 146
 147         /* Allocate the channel. */
 148         if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
 149                 return -ENOMEM;
 150         *pobject = &chan->base.object;
 151         chan->fifo = fifo;
 152         chan->runl = runlist;
 153         INIT_LIST_HEAD(&chan->head);
 154
 155         ret = nvkm_fifo_chan_ctor(func, &fifo->base, 0x1000, 0x1000, true, vmm,
 156                                   0, subdevs, 1, fifo->user.bar->addr, 0x200,
 157                                   oclass, &chan->base);
 158         if (ret)
 159                 return ret;
 160
 161         *chid = chan->base.chid;
 162         *inst = chan->base.inst->addr;
 163         *token = chan->base.func->submit_token(&chan->base);
 164
 165         /* Hack to support GPUs where even individual channels should be
 166          * part of a channel group.
 167          */
 168         if (fifo->func->cgrp_force) {
 169                 if (!(chan->cgrp = kmalloc(sizeof(*chan->cgrp), GFP_KERNEL)))
 170                         return -ENOMEM;
 171                 chan->cgrp->id = chan->base.chid;
 172                 INIT_LIST_HEAD(&chan->cgrp->head);
 173                 INIT_LIST_HEAD(&chan->cgrp->chan);
 174                 chan->cgrp->chan_nr = 0;
 175         }
 176
 177         /* Clear channel control registers. */
 178         usermem = chan->base.chid * 0x200;
 179         ilength = order_base_2(ilength / 8);
 180
 181         nvkm_kmap(fifo->user.mem);
 182         for (i = 0; i < 0x200; i += 4)
 183                 nvkm_wo32(fifo->user.mem, usermem + i, 0x00000000);
 184         nvkm_done(fifo->user.mem);
 185         usermem = nvkm_memory_addr(fifo->user.mem) + usermem;
 186
 187         /* Allocate fault method buffer (magics come from nvgpu). */
 188         size = nvkm_rd32(device, 0x104028); /* NV_PCE_PCE_MAP */
 189         size = 27 * 5 * (((9 + 1 + 3) * hweight32(size)) + 2);
 190         size = roundup(size, PAGE_SIZE);
 191
 192         ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000, true,
 193                               &chan->mthd);
 194         if (ret)
 195                 return ret;
 196
 197         mthd = nvkm_memory_bar2(chan->mthd);
 198         if (mthd == ~0ULL)
 199                 return -EFAULT;
 200
 201         /* RAMFC */
 202         nvkm_kmap(chan->base.inst);
 203         nvkm_wo32(chan->base.inst, 0x008, lower_32_bits(usermem));
 204         nvkm_wo32(chan->base.inst, 0x00c, upper_32_bits(usermem));
 205         nvkm_wo32(chan->base.inst, 0x010, 0x0000face);
 206         nvkm_wo32(chan->base.inst, 0x030, 0x7ffff902);
 207         nvkm_wo32(chan->base.inst, 0x048, lower_32_bits(ioffset));
 208         nvkm_wo32(chan->base.inst, 0x04c, upper_32_bits(ioffset) |
 209                                           (ilength << 16));
 210         nvkm_wo32(chan->base.inst, 0x084, 0x20400000);
 211         nvkm_wo32(chan->base.inst, 0x094, 0x30000001);
 212         nvkm_wo32(chan->base.inst, 0x0e4, priv ? 0x00000020 : 0x00000000);
 213         nvkm_wo32(chan->base.inst, 0x0e8, chan->base.chid);
 214         nvkm_wo32(chan->base.inst, 0x0f4, 0x00001000);
 215         nvkm_wo32(chan->base.inst, 0x0f8, 0x10003080);
 216         nvkm_mo32(chan->base.inst, 0x218, 0x00000000, 0x00000000);
 217         nvkm_wo32(chan->base.inst, 0x220, lower_32_bits(mthd));
 218         nvkm_wo32(chan->base.inst, 0x224, upper_32_bits(mthd));
 219         nvkm_done(chan->base.inst);
 220         return gv100_fifo_gpfifo_engine_valid(chan, true, true);
 221 }
 222
 223 int
 224 gv100_fifo_gpfifo_new(struct gk104_fifo *fifo, const struct nvkm_oclass *oclass,
 225                       void *data, u32 size, struct nvkm_object **pobject)
 226 {
 227         struct nvkm_object *parent = oclass->parent;
 228         union {
 229                 struct volta_channel_gpfifo_a_v0 v0;
 230         } *args = data;
 231         int ret = -ENOSYS;
 232
 233         nvif_ioctl(parent, "create channel gpfifo size %d\n", size);
 234         if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
 235                 nvif_ioctl(parent, "create channel gpfifo vers %d vmm %llx "
 236                                    "ioffset %016llx ilength %08x "
 237                                    "runlist %016llx priv %d\n",
 238                            args->v0.version, args->v0.vmm, args->v0.ioffset,
 239                            args->v0.ilength, args->v0.runlist, args->v0.priv);
 240                 if (args->v0.priv && !oclass->client->super)
 241                         return -EINVAL;
 242                 return gv100_fifo_gpfifo_new_(&gv100_fifo_gpfifo, fifo,
 243                                               &args->v0.runlist,
 244                                               &args->v0.chid,
 245                                                args->v0.vmm,
 246                                                args->v0.ioffset,
 247                                                args->v0.ilength,
 248                                               &args->v0.inst,
 249                                                args->v0.priv,
 250                                               &args->v0.token,
 251                                               oclass, pobject);
 252         }
 253
 254         return ret;
 255 }