kernel/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gpfifogk104.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 "changk104.h"
  25
  26 #include <core/client.h>
  27 #include <core/gpuobj.h>
  28 #include <subdev/fb.h>
  29 #include <subdev/mmu.h>
  30 #include <subdev/timer.h>
  31
  32 #include <nvif/class.h>
  33 #include <nvif/unpack.h>
  34
  35 static int
  36 gk104_fifo_gpfifo_kick(struct gk104_fifo_chan *chan)
  37 {
  38         struct gk104_fifo *fifo = chan->fifo;
  39         struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
  40         struct nvkm_device *device = subdev->device;
  41         struct nvkm_client *client = chan->base.object.client;
  42
  43         nvkm_wr32(device, 0x002634, chan->base.chid);
  44         if (nvkm_msec(device, 2000,
  45                 if (!(nvkm_rd32(device, 0x002634) & 0x00100000))
  46                         break;
  47         ) < 0) {
  48                 nvkm_error(subdev, "channel %d [%s] kick timeout\n",
  49                            chan->base.chid, client->name);
  50                 return -EBUSY;
  51         }
  52
  53         return 0;
  54 }
  55
  56 static u32
  57 gk104_fifo_gpfifo_engine_addr(struct nvkm_engine *engine)
  58 {
  59         switch (engine->subdev.index) {
  60         case NVKM_ENGINE_SW    :
  61         case NVKM_ENGINE_CE0   :
  62         case NVKM_ENGINE_CE1   :
  63         case NVKM_ENGINE_CE2   : return 0x0000;
  64         case NVKM_ENGINE_GR    : return 0x0210;
  65         case NVKM_ENGINE_MSPDEC: return 0x0250;
  66         case NVKM_ENGINE_MSPPP : return 0x0260;
  67         case NVKM_ENGINE_MSVLD : return 0x0270;
  68         default:
  69                 WARN_ON(1);
  70                 return 0;
  71         }
  72 }
  73
  74 static int
  75 gk104_fifo_gpfifo_engine_fini(struct nvkm_fifo_chan *base,
  76                               struct nvkm_engine *engine, bool suspend)
  77 {
  78         const u32 offset = gk104_fifo_gpfifo_engine_addr(engine);
  79         struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
  80         struct nvkm_gpuobj *inst = chan->base.inst;
  81         int ret;
  82
  83         ret = gk104_fifo_gpfifo_kick(chan);
  84         if (ret && suspend)
  85                 return ret;
  86
  87         if (offset) {
  88                 nvkm_kmap(inst);
  89                 nvkm_wo32(inst, offset + 0x00, 0x00000000);
  90                 nvkm_wo32(inst, offset + 0x04, 0x00000000);
  91                 nvkm_done(inst);
  92         }
  93
  94         return ret;
  95 }
  96
  97 static int
  98 gk104_fifo_gpfifo_engine_init(struct nvkm_fifo_chan *base,
  99                               struct nvkm_engine *engine)
 100 {
 101         const u32 offset = gk104_fifo_gpfifo_engine_addr(engine);
 102         struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
 103         struct nvkm_gpuobj *inst = chan->base.inst;
 104
 105         if (offset) {
 106                 u64 addr = chan->engn[engine->subdev.index].vma.offset;
 107                 nvkm_kmap(inst);
 108                 nvkm_wo32(inst, offset + 0x00, lower_32_bits(addr) | 4);
 109                 nvkm_wo32(inst, offset + 0x04, upper_32_bits(addr));
 110                 nvkm_done(inst);
 111         }
 112
 113         return 0;
 114 }
 115
 116 static void
 117 gk104_fifo_gpfifo_engine_dtor(struct nvkm_fifo_chan *base,
 118                               struct nvkm_engine *engine)
 119 {
 120         struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
 121         nvkm_gpuobj_unmap(&chan->engn[engine->subdev.index].vma);
 122         nvkm_gpuobj_del(&chan->engn[engine->subdev.index].inst);
 123 }
 124
 125 static int
 126 gk104_fifo_gpfifo_engine_ctor(struct nvkm_fifo_chan *base,
 127                               struct nvkm_engine *engine,
 128                               struct nvkm_object *object)
 129 {
 130         struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
 131         int engn = engine->subdev.index;
 132         int ret;
 133
 134         if (!gk104_fifo_gpfifo_engine_addr(engine))
 135                 return 0;
 136
 137         ret = nvkm_object_bind(object, NULL, 0, &chan->engn[engn].inst);
 138         if (ret)
 139                 return ret;
 140
 141         return nvkm_gpuobj_map(chan->engn[engn].inst, chan->vm,
 142                                NV_MEM_ACCESS_RW, &chan->engn[engn].vma);
 143 }
 144
 145 static void
 146 gk104_fifo_gpfifo_fini(struct nvkm_fifo_chan *base)
 147 {
 148         struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
 149         struct gk104_fifo *fifo = chan->fifo;
 150         struct nvkm_device *device = fifo->base.engine.subdev.device;
 151         u32 coff = chan->base.chid * 8;
 152
 153         if (!list_empty(&chan->head)) {
 154                 list_del_init(&chan->head);
 155                 nvkm_mask(device, 0x800004 + coff, 0x00000800, 0x00000800);
 156                 gk104_fifo_runlist_update(fifo, chan->engine);
 157         }
 158
 159         nvkm_wr32(device, 0x800000 + coff, 0x00000000);
 160 }
 161
 162 static void
 163 gk104_fifo_gpfifo_init(struct nvkm_fifo_chan *base)
 164 {
 165         struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
 166         struct gk104_fifo *fifo = chan->fifo;
 167         struct nvkm_device *device = fifo->base.engine.subdev.device;
 168         u32 addr = chan->base.inst->addr >> 12;
 169         u32 coff = chan->base.chid * 8;
 170
 171         nvkm_mask(device, 0x800004 + coff, 0x000f0000, chan->engine << 16);
 172         nvkm_wr32(device, 0x800000 + coff, 0x80000000 | addr);
 173
 174         if (list_empty(&chan->head) && !chan->killed) {
 175                 list_add_tail(&chan->head, &fifo->engine[chan->engine].chan);
 176                 nvkm_mask(device, 0x800004 + coff, 0x00000400, 0x00000400);
 177                 gk104_fifo_runlist_update(fifo, chan->engine);
 178                 nvkm_mask(device, 0x800004 + coff, 0x00000400, 0x00000400);
 179         }
 180 }
 181
 182 static void *
 183 gk104_fifo_gpfifo_dtor(struct nvkm_fifo_chan *base)
 184 {
 185         struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
 186         nvkm_vm_ref(NULL, &chan->vm, chan->pgd);
 187         nvkm_gpuobj_del(&chan->pgd);
 188         return chan;
 189 }
 190
 191 static const struct nvkm_fifo_chan_func
 192 gk104_fifo_gpfifo_func = {
 193         .dtor = gk104_fifo_gpfifo_dtor,
 194         .init = gk104_fifo_gpfifo_init,
 195         .fini = gk104_fifo_gpfifo_fini,
 196         .ntfy = g84_fifo_chan_ntfy,
 197         .engine_ctor = gk104_fifo_gpfifo_engine_ctor,
 198         .engine_dtor = gk104_fifo_gpfifo_engine_dtor,
 199         .engine_init = gk104_fifo_gpfifo_engine_init,
 200         .engine_fini = gk104_fifo_gpfifo_engine_fini,
 201 };
 202
 203 int
 204 gk104_fifo_gpfifo_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
 205                       void *data, u32 size, struct nvkm_object **pobject)
 206 {
 207         union {
 208                 struct kepler_channel_gpfifo_a_v0 v0;
 209         } *args = data;
 210         struct gk104_fifo *fifo = gk104_fifo(base);
 211         struct nvkm_device *device = fifo->base.engine.subdev.device;
 212         struct nvkm_object *parent = oclass->parent;
 213         struct gk104_fifo_chan *chan;
 214         u64 usermem, ioffset, ilength;
 215         u32 engines;
 216         int ret, i;
 217
 218         nvif_ioctl(parent, "create channel gpfifo size %d\n", size);
 219         if (nvif_unpack(args->v0, 0, 0, false)) {
 220                 nvif_ioctl(parent, "create channel gpfifo vers %d vm %llx "
 221                                    "ioffset %016llx ilength %08x engine %08x\n",
 222                            args->v0.version, args->v0.vm, args->v0.ioffset,
 223                            args->v0.ilength, args->v0.engine);
 224         } else
 225                 return ret;
 226
 227         /* determine which downstream engines are present */
 228         for (i = 0, engines = 0; i < ARRAY_SIZE(fifo->engine); i++) {
 229                 u64 subdevs = gk104_fifo_engine_subdev(i);
 230                 if (!nvkm_device_engine(device, __ffs64(subdevs)))
 231                         continue;
 232                 engines |= (1 << i);
 233         }
 234
 235         /* if this is an engine mask query, we're done */
 236         if (!args->v0.engine) {
 237                 args->v0.engine = engines;
 238                 return nvkm_object_new(oclass, NULL, 0, pobject);
 239         }
 240
 241         /* check that we support a requested engine - note that the user
 242          * argument is a mask in order to allow the user to request (for
 243          * example) *any* copy engine, but doesn't matter which.
 244          */
 245         args->v0.engine &= engines;
 246         if (!args->v0.engine) {
 247                 nvif_ioctl(parent, "no supported engine\n");
 248                 return -ENODEV;
 249         }
 250
 251         /* allocate the channel */
 252         if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
 253                 return -ENOMEM;
 254         *pobject = &chan->base.object;
 255         chan->fifo = fifo;
 256         chan->engine = __ffs(args->v0.engine);
 257         INIT_LIST_HEAD(&chan->head);
 258
 259         ret = nvkm_fifo_chan_ctor(&gk104_fifo_gpfifo_func, &fifo->base,
 260                                   0x1000, 0x1000, true, args->v0.vm, 0,
 261                                   gk104_fifo_engine_subdev(chan->engine),
 262                                   1, fifo->user.bar.offset, 0x200,
 263                                   oclass, &chan->base);
 264         if (ret)
 265                 return ret;
 266
 267         args->v0.chid = chan->base.chid;
 268
 269         /* page directory */
 270         ret = nvkm_gpuobj_new(device, 0x10000, 0x1000, false, NULL, &chan->pgd);
 271         if (ret)
 272                 return ret;
 273
 274         nvkm_kmap(chan->base.inst);
 275         nvkm_wo32(chan->base.inst, 0x0200, lower_32_bits(chan->pgd->addr));
 276         nvkm_wo32(chan->base.inst, 0x0204, upper_32_bits(chan->pgd->addr));
 277         nvkm_wo32(chan->base.inst, 0x0208, 0xffffffff);
 278         nvkm_wo32(chan->base.inst, 0x020c, 0x000000ff);
 279         nvkm_done(chan->base.inst);
 280
 281         ret = nvkm_vm_ref(chan->base.vm, &chan->vm, chan->pgd);
 282         if (ret)
 283                 return ret;
 284
 285         /* clear channel control registers */
 286         usermem = chan->base.chid * 0x200;
 287         ioffset = args->v0.ioffset;
 288         ilength = order_base_2(args->v0.ilength / 8);
 289
 290         nvkm_kmap(fifo->user.mem);
 291         for (i = 0; i < 0x200; i += 4)
 292                 nvkm_wo32(fifo->user.mem, usermem + i, 0x00000000);
 293         nvkm_done(fifo->user.mem);
 294         usermem = nvkm_memory_addr(fifo->user.mem) + usermem;
 295
 296         /* RAMFC */
 297         nvkm_kmap(chan->base.inst);
 298         nvkm_wo32(chan->base.inst, 0x08, lower_32_bits(usermem));
 299         nvkm_wo32(chan->base.inst, 0x0c, upper_32_bits(usermem));
 300         nvkm_wo32(chan->base.inst, 0x10, 0x0000face);
 301         nvkm_wo32(chan->base.inst, 0x30, 0xfffff902);
 302         nvkm_wo32(chan->base.inst, 0x48, lower_32_bits(ioffset));
 303         nvkm_wo32(chan->base.inst, 0x4c, upper_32_bits(ioffset) |
 304                                          (ilength << 16));
 305         nvkm_wo32(chan->base.inst, 0x84, 0x20400000);
 306         nvkm_wo32(chan->base.inst, 0x94, 0x30000001);
 307         nvkm_wo32(chan->base.inst, 0x9c, 0x00000100);
 308         nvkm_wo32(chan->base.inst, 0xac, 0x0000001f);
 309         nvkm_wo32(chan->base.inst, 0xe8, chan->base.chid);
 310         nvkm_wo32(chan->base.inst, 0xb8, 0xf8000000);
 311         nvkm_wo32(chan->base.inst, 0xf8, 0x10003080); /* 0x002310 */
 312         nvkm_wo32(chan->base.inst, 0xfc, 0x10000010); /* 0x002350 */
 313         nvkm_done(chan->base.inst);
 314         return 0;
 315 }
 316
 317 const struct nvkm_fifo_chan_oclass
 318 gk104_fifo_gpfifo_oclass = {
 319         .base.oclass = KEPLER_CHANNEL_GPFIFO_A,
 320         .base.minver = 0,
 321         .base.maxver = 0,
 322         .ctor = gk104_fifo_gpfifo_new,
 323 };