drivers/gpu/drm/nouveau/nv40_mpeg.c

   1 /*
   2  * Copyright 2011 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
  25 #include "drmP.h"
  26 #include "nouveau_drv.h"
  27 #include "nouveau_ramht.h"
  28
  29 struct nv40_mpeg_engine {
  30         struct nouveau_exec_engine base;
  31 };
  32
  33 static int
  34 nv40_mpeg_context_new(struct nouveau_channel *chan, int engine)
  35 {
  36         struct drm_device *dev = chan->dev;
  37         struct drm_nouveau_private *dev_priv = dev->dev_private;
  38         struct nouveau_gpuobj *ctx = NULL;
  39         unsigned long flags;
  40         int ret;
  41
  42         NV_DEBUG(dev, "ch%d\n", chan->id);
  43
  44         ret = nouveau_gpuobj_new(dev, NULL, 264 * 4, 16, NVOBJ_FLAG_ZERO_ALLOC |
  45                                  NVOBJ_FLAG_ZERO_FREE, &ctx);
  46         if (ret)
  47                 return ret;
  48
  49         nv_wo32(ctx, 0x78, 0x02001ec1);
  50
  51         spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
  52         nv_mask(dev, 0x002500, 0x00000001, 0x00000000);
  53         if ((nv_rd32(dev, 0x003204) & 0x1f) == chan->id)
  54                 nv_wr32(dev, 0x00330c, ctx->pinst >> 4);
  55         nv_wo32(chan->ramfc, 0x54, ctx->pinst >> 4);
  56         nv_mask(dev, 0x002500, 0x00000001, 0x00000001);
  57         spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
  58
  59         chan->engctx[engine] = ctx;
  60         return 0;
  61 }
  62
  63 static void
  64 nv40_mpeg_context_del(struct nouveau_channel *chan, int engine)
  65 {
  66         struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
  67         struct nouveau_gpuobj *ctx = chan->engctx[engine];
  68         struct drm_device *dev = chan->dev;
  69         unsigned long flags;
  70         u32 inst = 0x80000000 | (ctx->pinst >> 4);
  71
  72         spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
  73         nv_mask(dev, 0x00b32c, 0x00000001, 0x00000000);
  74         if (nv_rd32(dev, 0x00b318) == inst)
  75                 nv_mask(dev, 0x00b318, 0x80000000, 0x00000000);
  76         nv_mask(dev, 0x00b32c, 0x00000001, 0x00000001);
  77         spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
  78
  79         nouveau_gpuobj_ref(NULL, &ctx);
  80         chan->engctx[engine] = NULL;
  81 }
  82
  83 static int
  84 nv40_mpeg_object_new(struct nouveau_channel *chan, int engine,
  85                       u32 handle, u16 class)
  86 {
  87         struct drm_device *dev = chan->dev;
  88         struct nouveau_gpuobj *obj = NULL;
  89         int ret;
  90
  91         ret = nouveau_gpuobj_new(dev, chan, 20, 16, NVOBJ_FLAG_ZERO_ALLOC |
  92                                  NVOBJ_FLAG_ZERO_FREE, &obj);
  93         if (ret)
  94                 return ret;
  95         obj->engine = 2;
  96         obj->class  = class;
  97
  98         nv_wo32(obj, 0x00, class);
  99
 100         ret = nouveau_ramht_insert(chan, handle, obj);
 101         nouveau_gpuobj_ref(NULL, &obj);
 102         return ret;
 103 }
 104
 105 static int
 106 nv40_mpeg_init(struct drm_device *dev, int engine)
 107 {
 108         struct drm_nouveau_private *dev_priv = dev->dev_private;
 109         struct nv40_mpeg_engine *pmpeg = nv_engine(dev, engine);
 110         int i;
 111
 112         /* VPE init */
 113         nv_mask(dev, 0x000200, 0x00000002, 0x00000000);
 114         nv_mask(dev, 0x000200, 0x00000002, 0x00000002);
 115         nv_wr32(dev, 0x00b0e0, 0x00000020); /* nvidia: rd 0x01, wr 0x20 */
 116         nv_wr32(dev, 0x00b0e8, 0x00000020); /* nvidia: rd 0x01, wr 0x20 */
 117
 118         for (i = 0; i < dev_priv->engine.fb.num_tiles; i++)
 119                 pmpeg->base.set_tile_region(dev, i);
 120
 121         /* PMPEG init */
 122         nv_wr32(dev, 0x00b32c, 0x00000000);
 123         nv_wr32(dev, 0x00b314, 0x00000100);
 124         nv_wr32(dev, 0x00b220, 0x00000044);
 125         nv_wr32(dev, 0x00b300, 0x02001ec1);
 126         nv_mask(dev, 0x00b32c, 0x00000001, 0x00000001);
 127
 128         nv_wr32(dev, 0x00b100, 0xffffffff);
 129         nv_wr32(dev, 0x00b140, 0xffffffff);
 130
 131         if (!nv_wait(dev, 0x00b200, 0x00000001, 0x00000000)) {
 132                 NV_ERROR(dev, "PMPEG init: 0x%08x\n", nv_rd32(dev, 0x00b200));
 133                 return -EBUSY;
 134         }
 135
 136         return 0;
 137 }
 138
 139 static int
 140 nv40_mpeg_fini(struct drm_device *dev, int engine, bool suspend)
 141 {
 142         /*XXX: context save? */
 143         nv_mask(dev, 0x00b32c, 0x00000001, 0x00000000);
 144         nv_wr32(dev, 0x00b140, 0x00000000);
 145         return 0;
 146 }
 147
 148 static int
 149 nv40_mpeg_mthd_dma(struct nouveau_channel *chan, u32 class, u32 mthd, u32 data)
 150 {
 151         struct drm_device *dev = chan->dev;
 152         u32 inst = data << 4;
 153         u32 dma0 = nv_ri32(dev, inst + 0);
 154         u32 dma1 = nv_ri32(dev, inst + 4);
 155         u32 dma2 = nv_ri32(dev, inst + 8);
 156         u32 base = (dma2 & 0xfffff000) | (dma0 >> 20);
 157         u32 size = dma1 + 1;
 158
 159         /* only allow linear DMA objects */
 160         if (!(dma0 & 0x00002000))
 161                 return -EINVAL;
 162
 163         if (mthd == 0x0190) {
 164                 /* DMA_CMD */
 165                 nv_mask(dev, 0x00b300, 0x00030000, (dma0 & 0x00030000));
 166                 nv_wr32(dev, 0x00b334, base);
 167                 nv_wr32(dev, 0x00b324, size);
 168         } else
 169         if (mthd == 0x01a0) {
 170                 /* DMA_DATA */
 171                 nv_mask(dev, 0x00b300, 0x000c0000, (dma0 & 0x00030000) << 2);
 172                 nv_wr32(dev, 0x00b360, base);
 173                 nv_wr32(dev, 0x00b364, size);
 174         } else {
 175                 /* DMA_IMAGE, VRAM only */
 176                 if (dma0 & 0x000c0000)
 177                         return -EINVAL;
 178
 179                 nv_wr32(dev, 0x00b370, base);
 180                 nv_wr32(dev, 0x00b374, size);
 181         }
 182
 183         return 0;
 184 }
 185
 186 static int
 187 nv40_mpeg_isr_chid(struct drm_device *dev, u32 inst)
 188 {
 189         struct drm_nouveau_private *dev_priv = dev->dev_private;
 190         struct nouveau_gpuobj *ctx;
 191         unsigned long flags;
 192         int i;
 193
 194         spin_lock_irqsave(&dev_priv->channels.lock, flags);
 195         for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
 196                 if (!dev_priv->channels.ptr[i])
 197                         continue;
 198
 199                 ctx = dev_priv->channels.ptr[i]->engctx[NVOBJ_ENGINE_MPEG];
 200                 if (ctx && ctx->pinst == inst)
 201                         break;
 202         }
 203         spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
 204         return i;
 205 }
 206
 207 static void
 208 nv40_vpe_set_tile_region(struct drm_device *dev, int i)
 209 {
 210         struct drm_nouveau_private *dev_priv = dev->dev_private;
 211         struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i];
 212
 213         nv_wr32(dev, 0x00b008 + (i * 0x10), tile->pitch);
 214         nv_wr32(dev, 0x00b004 + (i * 0x10), tile->limit);
 215         nv_wr32(dev, 0x00b000 + (i * 0x10), tile->addr);
 216 }
 217
 218 static void
 219 nv40_mpeg_isr(struct drm_device *dev)
 220 {
 221         u32 inst = (nv_rd32(dev, 0x00b318) & 0x000fffff) << 4;
 222         u32 chid = nv40_mpeg_isr_chid(dev, inst);
 223         u32 stat = nv_rd32(dev, 0x00b100);
 224         u32 type = nv_rd32(dev, 0x00b230);
 225         u32 mthd = nv_rd32(dev, 0x00b234);
 226         u32 data = nv_rd32(dev, 0x00b238);
 227         u32 show = stat;
 228
 229         if (stat & 0x01000000) {
 230                 /* happens on initial binding of the object */
 231                 if (type == 0x00000020 && mthd == 0x0000) {
 232                         nv_mask(dev, 0x00b308, 0x00000000, 0x00000000);
 233                         show &= ~0x01000000;
 234                 }
 235
 236                 if (type == 0x00000010) {
 237                         if (!nouveau_gpuobj_mthd_call2(dev, chid, 0x3174, mthd, data))
 238                                 show &= ~0x01000000;
 239                 }
 240         }
 241
 242         nv_wr32(dev, 0x00b100, stat);
 243         nv_wr32(dev, 0x00b230, 0x00000001);
 244
 245         if (show && nouveau_ratelimit()) {
 246                 NV_INFO(dev, "PMPEG: Ch %d [0x%08x] 0x%08x 0x%08x 0x%08x 0x%08x\n",
 247                         chid, inst, stat, type, mthd, data);
 248         }
 249 }
 250
 251 static void
 252 nv40_vpe_isr(struct drm_device *dev)
 253 {
 254         if (nv_rd32(dev, 0x00b100))
 255                 nv40_mpeg_isr(dev);
 256
 257         if (nv_rd32(dev, 0x00b800)) {
 258                 u32 stat = nv_rd32(dev, 0x00b800);
 259                 NV_INFO(dev, "PMSRCH: 0x%08x\n", stat);
 260                 nv_wr32(dev, 0xb800, stat);
 261         }
 262 }
 263
 264 static void
 265 nv40_mpeg_destroy(struct drm_device *dev, int engine)
 266 {
 267         struct nv40_mpeg_engine *pmpeg = nv_engine(dev, engine);
 268
 269         nouveau_irq_unregister(dev, 0);
 270
 271         NVOBJ_ENGINE_DEL(dev, MPEG);
 272         kfree(pmpeg);
 273 }
 274
 275 int
 276 nv40_mpeg_create(struct drm_device *dev)
 277 {
 278         struct nv40_mpeg_engine *pmpeg;
 279
 280         pmpeg = kzalloc(sizeof(*pmpeg), GFP_KERNEL);
 281         if (!pmpeg)
 282                 return -ENOMEM;
 283
 284         pmpeg->base.destroy = nv40_mpeg_destroy;
 285         pmpeg->base.init = nv40_mpeg_init;
 286         pmpeg->base.fini = nv40_mpeg_fini;
 287         pmpeg->base.context_new = nv40_mpeg_context_new;
 288         pmpeg->base.context_del = nv40_mpeg_context_del;
 289         pmpeg->base.object_new = nv40_mpeg_object_new;
 290
 291         /* ISR vector, PMC_ENABLE bit,  and TILE regs are shared between
 292          * all VPE engines, for this driver's purposes the PMPEG engine
 293          * will be treated as the "master" and handle the global VPE
 294          * bits too
 295          */
 296         pmpeg->base.set_tile_region = nv40_vpe_set_tile_region;
 297         nouveau_irq_register(dev, 0, nv40_vpe_isr);
 298
 299         NVOBJ_ENGINE_ADD(dev, MPEG, &pmpeg->base);
 300         NVOBJ_CLASS(dev, 0x3174, MPEG);
 301         NVOBJ_MTHD (dev, 0x3174, 0x0190, nv40_mpeg_mthd_dma);
 302         NVOBJ_MTHD (dev, 0x3174, 0x01a0, nv40_mpeg_mthd_dma);
 303         NVOBJ_MTHD (dev, 0x3174, 0x01b0, nv40_mpeg_mthd_dma);
 304
 305 #if 0
 306         NVOBJ_ENGINE_ADD(dev, ME, &pme->base);
 307         NVOBJ_CLASS(dev, 0x4075, ME);
 308 #endif
 309         return 0;
 310
 311 }