LXR linux/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
  38static int
  39nv31_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
  55const struct nvkm_object_func
  56nv31_mpeg_object = {
  57        .bind = nv31_mpeg_object_bind,
  58};
  59
  60/*******************************************************************************
  61 * PMPEG context
  62 ******************************************************************************/
  63
  64static void *
  65nv31_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
  78static const struct nvkm_object_func
  79nv31_mpeg_chan = {
  80        .dtor = nv31_mpeg_chan_dtor,
  81};
  82
  83int
  84nv31_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
 113void
 114nv31_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
 124static bool
 125nv31_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
 168static bool
 169nv31_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
 183static void
 184nv31_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
 224int
 225nv31_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
 256static void *
 257nv31_mpeg_dtor(struct nvkm_engine *engine)
 258{
 259        return nv31_mpeg(engine);
 260}
 261
 262static const struct nvkm_engine_func
 263nv31_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
 275int
 276nv31_mpeg_new_(const struct nv31_mpeg_func *func, struct nvkm_device *device,
 277               enum nvkm_subdev_type type, int inst, 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, type, inst, true, &mpeg->engine);
 287}
 288
 289static const struct nv31_mpeg_func
 290nv31_mpeg = {
 291        .mthd_dma = nv31_mpeg_mthd_dma,
 292};
 293
 294int
 295nv31_mpeg_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
 296              struct nvkm_engine **pmpeg)
 297{
 298        return nv31_mpeg_new_(&nv31_mpeg, device, type, inst, pmpeg);
 299}
 300