drivers/gpu/drm/nouveau/nvkm/engine/mpeg/nv31.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 "nv31.h"
  25
  26 #include <core/client.h>
  27 #include <core/gpuobj.h>
  28 #include <subdev/fb.h>
  29 #include <subdev/timer.h>
  30 #include <engine/fifo.h>
  31
  32 #include <nvif/class.h>
  33
  34 /*******************************************************************************
  35  * MPEG object classes
  36  ******************************************************************************/
  37
  38 static int
  39 nv31_mpeg_object_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
  40                       int align, struct nvkm_gpuobj **pgpuobj)
  41 {
  42         int ret = nvkm_gpuobj_new(object->engine->subdev.device, 16, align,
  43                                   false, parent, pgpuobj);
  44         if (ret == 0) {
  45                 nvkm_kmap(*pgpuobj);
  46                 nvkm_wo32(*pgpuobj, 0x00, object->oclass);
  47                 nvkm_wo32(*pgpuobj, 0x04, 0x00000000);
  48                 nvkm_wo32(*pgpuobj, 0x08, 0x00000000);
  49                 nvkm_wo32(*pgpuobj, 0x0c, 0x00000000);
  50                 nvkm_done(*pgpuobj);
  51         }
  52         return ret;
  53 }
  54
  55 const struct nvkm_object_func
  56 nv31_mpeg_object = {
  57         .bind = nv31_mpeg_object_bind,
  58 };
  59
  60 /*******************************************************************************
  61  * PMPEG context
  62  ******************************************************************************/
  63
  64 static void *
  65 nv31_mpeg_chan_dtor(struct nvkm_object *object)
  66 {
  67         struct nv31_mpeg_chan *chan = nv31_mpeg_chan(object);
  68         struct nv31_mpeg *mpeg = chan->mpeg;
  69         unsigned long flags;
  70
  71         spin_lock_irqsave(&mpeg->engine.lock, flags);
  72         if (mpeg->chan == chan)
  73                 mpeg->chan = NULL;
  74         spin_unlock_irqrestore(&mpeg->engine.lock, flags);
  75         return chan;
  76 }
  77
  78 static const struct nvkm_object_func
  79 nv31_mpeg_chan = {
  80         .dtor = nv31_mpeg_chan_dtor,
  81 };
  82
  83 int
  84 nv31_mpeg_chan_new(struct nvkm_fifo_chan *fifoch,
  85                    const struct nvkm_oclass *oclass,
  86                    struct nvkm_object **pobject)
  87 {
  88         struct nv31_mpeg *mpeg = nv31_mpeg(oclass->engine);
  89         struct nv31_mpeg_chan *chan;
  90         unsigned long flags;
  91         int ret = -EBUSY;
  92
  93         if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
  94                 return -ENOMEM;
  95         nvkm_object_ctor(&nv31_mpeg_chan, oclass, &chan->object);
  96         chan->mpeg = mpeg;
  97         chan->fifo = fifoch;
  98         *pobject = &chan->object;
  99
 100         spin_lock_irqsave(&mpeg->engine.lock, flags);
 101         if (!mpeg->chan) {
 102                 mpeg->chan = chan;
 103                 ret = 0;
 104         }
 105         spin_unlock_irqrestore(&mpeg->engine.lock, flags);
 106         return ret;
 107 }
 108
 109 /*******************************************************************************
 110  * PMPEG engine/subdev functions
 111  ******************************************************************************/
 112
 113 void
 114 nv31_mpeg_tile(struct nvkm_engine *engine, int i, struct nvkm_fb_tile *tile)
 115 {
 116         struct nv31_mpeg *mpeg = nv31_mpeg(engine);
 117         struct nvkm_device *device = mpeg->engine.subdev.device;
 118
 119         nvkm_wr32(device, 0x00b008 + (i * 0x10), tile->pitch);
 120         nvkm_wr32(device, 0x00b004 + (i * 0x10), tile->limit);
 121         nvkm_wr32(device, 0x00b000 + (i * 0x10), tile->addr);
 122 }
 123
 124 static bool
 125 nv31_mpeg_mthd_dma(struct nvkm_device *device, u32 mthd, u32 data)
 126 {
 127         struct nv31_mpeg *mpeg = nv31_mpeg(device->mpeg);
 128         struct nvkm_subdev *subdev = &mpeg->engine.subdev;
 129         u32 inst = data << 4;
 130         u32 dma0 = nvkm_rd32(device, 0x700000 + inst);
 131         u32 dma1 = nvkm_rd32(device, 0x700004 + inst);
 132         u32 dma2 = nvkm_rd32(device, 0x700008 + inst);
 133         u32 base = (dma2 & 0xfffff000) | (dma0 >> 20);
 134         u32 size = dma1 + 1;
 135
 136         /* only allow linear DMA objects */
 137         if (!(dma0 & 0x00002000)) {
 138                 nvkm_error(subdev, "inst %08x dma0 %08x dma1 %08x dma2 %08x\n",
 139                            inst, dma0, dma1, dma2);
 140                 return false;
 141         }
 142
 143         if (mthd == 0x0190) {
 144                 /* DMA_CMD */
 145                 nvkm_mask(device, 0x00b300, 0x00010000,
 146                                   (dma0 & 0x00030000) ? 0x00010000 : 0);
 147                 nvkm_wr32(device, 0x00b334, base);
 148                 nvkm_wr32(device, 0x00b324, size);
 149         } else
 150         if (mthd == 0x01a0) {
 151                 /* DMA_DATA */
 152                 nvkm_mask(device, 0x00b300, 0x00020000,
 153                                   (dma0 & 0x00030000) ? 0x00020000 : 0);
 154                 nvkm_wr32(device, 0x00b360, base);
 155                 nvkm_wr32(device, 0x00b364, size);
 156         } else {
 157                 /* DMA_IMAGE, VRAM only */
 158                 if (dma0 & 0x00030000)
 159                         return false;
 160
 161                 nvkm_wr32(device, 0x00b370, base);
 162                 nvkm_wr32(device, 0x00b374, size);
 163         }
 164
 165         return true;
 166 }
 167
 168 static bool
 169 nv31_mpeg_mthd(struct nv31_mpeg *mpeg, u32 mthd, u32 data)
 170 {
 171         struct nvkm_device *device = mpeg->engine.subdev.device;
 172         switch (mthd) {
 173         case 0x190:
 174         case 0x1a0:
 175         case 0x1b0:
 176                 return mpeg->func->mthd_dma(device, mthd, data);
 177         default:
 178                 break;
 179         }
 180         return false;
 181 }
 182
 183 static void
 184 nv31_mpeg_intr(struct nvkm_engine *engine)
 185 {
 186         struct nv31_mpeg *mpeg = nv31_mpeg(engine);
 187         struct nvkm_subdev *subdev = &mpeg->engine.subdev;
 188         struct nvkm_device *device = subdev->device;
 189         u32 stat = nvkm_rd32(device, 0x00b100);
 190         u32 type = nvkm_rd32(device, 0x00b230);
 191         u32 mthd = nvkm_rd32(device, 0x00b234);
 192         u32 data = nvkm_rd32(device, 0x00b238);
 193         u32 show = stat;
 194         unsigned long flags;
 195
 196         spin_lock_irqsave(&mpeg->engine.lock, flags);
 197
 198         if (stat & 0x01000000) {
 199                 /* happens on initial binding of the object */
 200                 if (type == 0x00000020 && mthd == 0x0000) {
 201                         nvkm_mask(device, 0x00b308, 0x00000000, 0x00000000);
 202                         show &= ~0x01000000;
 203                 }
 204
 205                 if (type == 0x00000010) {
 206                         if (nv31_mpeg_mthd(mpeg, mthd, data))
 207                                 show &= ~0x01000000;
 208                 }
 209         }
 210
 211         nvkm_wr32(device, 0x00b100, stat);
 212         nvkm_wr32(device, 0x00b230, 0x00000001);
 213
 214         if (show) {
 215                 nvkm_error(subdev, "ch %d [%s] %08x %08x %08x %08x\n",
 216                            mpeg->chan ? mpeg->chan->fifo->chid : -1,
 217                            mpeg->chan ? mpeg->chan->object.client->name :
 218                            "unknown", stat, type, mthd, data);
 219         }
 220
 221         spin_unlock_irqrestore(&mpeg->engine.lock, flags);
 222 }
 223
 224 int
 225 nv31_mpeg_init(struct nvkm_engine *mpeg)
 226 {
 227         struct nvkm_subdev *subdev = &mpeg->subdev;
 228         struct nvkm_device *device = subdev->device;
 229
 230         /* VPE init */
 231         nvkm_wr32(device, 0x00b0e0, 0x00000020); /* nvidia: rd 0x01, wr 0x20 */
 232         nvkm_wr32(device, 0x00b0e8, 0x00000020); /* nvidia: rd 0x01, wr 0x20 */
 233
 234         /* PMPEG init */
 235         nvkm_wr32(device, 0x00b32c, 0x00000000);
 236         nvkm_wr32(device, 0x00b314, 0x00000100);
 237         nvkm_wr32(device, 0x00b220, 0x00000031);
 238         nvkm_wr32(device, 0x00b300, 0x02001ec1);
 239         nvkm_mask(device, 0x00b32c, 0x00000001, 0x00000001);
 240
 241         nvkm_wr32(device, 0x00b100, 0xffffffff);
 242         nvkm_wr32(device, 0x00b140, 0xffffffff);
 243
 244         if (nvkm_msec(device, 2000,
 245                 if (!(nvkm_rd32(device, 0x00b200) & 0x00000001))
 246                         break;
 247         ) < 0) {
 248                 nvkm_error(subdev, "timeout %08x\n",
 249                            nvkm_rd32(device, 0x00b200));
 250                 return -EBUSY;
 251         }
 252
 253         return 0;
 254 }
 255
 256 static void *
 257 nv31_mpeg_dtor(struct nvkm_engine *engine)
 258 {
 259         return nv31_mpeg(engine);
 260 }
 261
 262 static const struct nvkm_engine_func
 263 nv31_mpeg_ = {
 264         .dtor = nv31_mpeg_dtor,
 265         .init = nv31_mpeg_init,
 266         .intr = nv31_mpeg_intr,
 267         .tile = nv31_mpeg_tile,
 268         .fifo.cclass = nv31_mpeg_chan_new,
 269         .sclass = {
 270                 { -1, -1, NV31_MPEG, &nv31_mpeg_object },
 271                 {}
 272         }
 273 };
 274
 275 int
 276 nv31_mpeg_new_(const struct nv31_mpeg_func *func, struct nvkm_device *device,
 277                int index, struct nvkm_engine **pmpeg)
 278 {
 279         struct nv31_mpeg *mpeg;
 280
 281         if (!(mpeg = kzalloc(sizeof(*mpeg), GFP_KERNEL)))
 282                 return -ENOMEM;
 283         mpeg->func = func;
 284         *pmpeg = &mpeg->engine;
 285
 286         return nvkm_engine_ctor(&nv31_mpeg_, device, index,
 287                                 true, &mpeg->engine);
 288 }
 289
 290 static const struct nv31_mpeg_func
 291 nv31_mpeg = {
 292         .mthd_dma = nv31_mpeg_mthd_dma,
 293 };
 294
 295 int
 296 nv31_mpeg_new(struct nvkm_device *device, int index, struct nvkm_engine **pmpeg)
 297 {
 298         return nv31_mpeg_new_(&nv31_mpeg, device, index, pmpeg);
 299 }