release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/gpu/drm/nouveau/nv10_fifo.c

   1 /*
   2  * Copyright (C) 2007 Ben Skeggs.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include "drmP.h"
  28 #include "drm.h"
  29 #include "nouveau_drv.h"
  30
  31 #define NV10_RAMFC(c) (dev_priv->ramfc_offset + ((c) * NV10_RAMFC__SIZE))
  32 #define NV10_RAMFC__SIZE ((dev_priv->chipset) >= 0x17 ? 64 : 32)
  33
  34 int
  35 nv10_fifo_channel_id(struct drm_device *dev)
  36 {
  37         return nv_rd32(dev, NV03_PFIFO_CACHE1_PUSH1) &
  38                         NV10_PFIFO_CACHE1_PUSH1_CHID_MASK;
  39 }
  40
  41 int
  42 nv10_fifo_create_context(struct nouveau_channel *chan)
  43 {
  44         struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
  45         struct drm_device *dev = chan->dev;
  46         uint32_t fc = NV10_RAMFC(chan->id);
  47         int ret;
  48
  49         ret = nouveau_gpuobj_new_fake(dev, NV10_RAMFC(chan->id), ~0,
  50                                       NV10_RAMFC__SIZE, NVOBJ_FLAG_ZERO_ALLOC |
  51                                       NVOBJ_FLAG_ZERO_FREE, NULL, &chan->ramfc);
  52         if (ret)
  53                 return ret;
  54
  55         /* Fill entries that are seen filled in dumps of nvidia driver just
  56          * after channel's is put into DMA mode
  57          */
  58         nv_wi32(dev, fc +  0, chan->pushbuf_base);
  59         nv_wi32(dev, fc +  4, chan->pushbuf_base);
  60         nv_wi32(dev, fc + 12, chan->pushbuf->instance >> 4);
  61         nv_wi32(dev, fc + 20, NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
  62                               NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
  63                               NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8 |
  64 #ifdef __BIG_ENDIAN
  65                               NV_PFIFO_CACHE1_BIG_ENDIAN |
  66 #endif
  67                               0);
  68
  69         /* enable the fifo dma operation */
  70         nv_wr32(dev, NV04_PFIFO_MODE,
  71                 nv_rd32(dev, NV04_PFIFO_MODE) | (1 << chan->id));
  72         return 0;
  73 }
  74
  75 void
  76 nv10_fifo_destroy_context(struct nouveau_channel *chan)
  77 {
  78         struct drm_device *dev = chan->dev;
  79
  80         nv_wr32(dev, NV04_PFIFO_MODE,
  81                         nv_rd32(dev, NV04_PFIFO_MODE) & ~(1 << chan->id));
  82
  83         nouveau_gpuobj_ref_del(dev, &chan->ramfc);
  84 }
  85
  86 static void
  87 nv10_fifo_do_load_context(struct drm_device *dev, int chid)
  88 {
  89         struct drm_nouveau_private *dev_priv = dev->dev_private;
  90         uint32_t fc = NV10_RAMFC(chid), tmp;
  91
  92         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_PUT, nv_ri32(dev, fc + 0));
  93         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_GET, nv_ri32(dev, fc + 4));
  94         nv_wr32(dev, NV10_PFIFO_CACHE1_REF_CNT, nv_ri32(dev, fc + 8));
  95
  96         tmp = nv_ri32(dev, fc + 12);
  97         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_INSTANCE, tmp & 0xFFFF);
  98         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_DCOUNT, tmp >> 16);
  99
 100         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_STATE, nv_ri32(dev, fc + 16));
 101         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_FETCH, nv_ri32(dev, fc + 20));
 102         nv_wr32(dev, NV04_PFIFO_CACHE1_ENGINE, nv_ri32(dev, fc + 24));
 103         nv_wr32(dev, NV04_PFIFO_CACHE1_PULL1, nv_ri32(dev, fc + 28));
 104
 105         if (dev_priv->chipset < 0x17)
 106                 goto out;
 107
 108         nv_wr32(dev, NV10_PFIFO_CACHE1_ACQUIRE_VALUE, nv_ri32(dev, fc + 32));
 109         tmp = nv_ri32(dev, fc + 36);
 110         nv_wr32(dev, NV10_PFIFO_CACHE1_ACQUIRE_TIMESTAMP, tmp);
 111         nv_wr32(dev, NV10_PFIFO_CACHE1_ACQUIRE_TIMEOUT, nv_ri32(dev, fc + 40));
 112         nv_wr32(dev, NV10_PFIFO_CACHE1_SEMAPHORE, nv_ri32(dev, fc + 44));
 113         nv_wr32(dev, NV10_PFIFO_CACHE1_DMA_SUBROUTINE, nv_ri32(dev, fc + 48));
 114
 115 out:
 116         nv_wr32(dev, NV03_PFIFO_CACHE1_GET, 0);
 117         nv_wr32(dev, NV03_PFIFO_CACHE1_PUT, 0);
 118 }
 119
 120 int
 121 nv10_fifo_load_context(struct nouveau_channel *chan)
 122 {
 123         struct drm_device *dev = chan->dev;
 124         uint32_t tmp;
 125
 126         nv10_fifo_do_load_context(dev, chan->id);
 127
 128         nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH1,
 129                      NV03_PFIFO_CACHE1_PUSH1_DMA | chan->id);
 130         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_PUSH, 1);
 131
 132         /* Reset NV04_PFIFO_CACHE1_DMA_CTL_AT_INFO to INVALID */
 133         tmp = nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_CTL) & ~(1 << 31);
 134         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_CTL, tmp);
 135
 136         return 0;
 137 }
 138
 139 int
 140 nv10_fifo_unload_context(struct drm_device *dev)
 141 {
 142         struct drm_nouveau_private *dev_priv = dev->dev_private;
 143         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 144         uint32_t fc, tmp;
 145         int chid;
 146
 147         chid = pfifo->channel_id(dev);
 148         if (chid < 0 || chid >= dev_priv->engine.fifo.channels)
 149                 return 0;
 150         fc = NV10_RAMFC(chid);
 151
 152         nv_wi32(dev, fc +  0, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_PUT));
 153         nv_wi32(dev, fc +  4, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_GET));
 154         nv_wi32(dev, fc +  8, nv_rd32(dev, NV10_PFIFO_CACHE1_REF_CNT));
 155         tmp  = nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_INSTANCE) & 0xFFFF;
 156         tmp |= (nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_DCOUNT) << 16);
 157         nv_wi32(dev, fc + 12, tmp);
 158         nv_wi32(dev, fc + 16, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_STATE));
 159         nv_wi32(dev, fc + 20, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_FETCH));
 160         nv_wi32(dev, fc + 24, nv_rd32(dev, NV04_PFIFO_CACHE1_ENGINE));
 161         nv_wi32(dev, fc + 28, nv_rd32(dev, NV04_PFIFO_CACHE1_PULL1));
 162
 163         if (dev_priv->chipset < 0x17)
 164                 goto out;
 165
 166         nv_wi32(dev, fc + 32, nv_rd32(dev, NV10_PFIFO_CACHE1_ACQUIRE_VALUE));
 167         tmp = nv_rd32(dev, NV10_PFIFO_CACHE1_ACQUIRE_TIMESTAMP);
 168         nv_wi32(dev, fc + 36, tmp);
 169         nv_wi32(dev, fc + 40, nv_rd32(dev, NV10_PFIFO_CACHE1_ACQUIRE_TIMEOUT));
 170         nv_wi32(dev, fc + 44, nv_rd32(dev, NV10_PFIFO_CACHE1_SEMAPHORE));
 171         nv_wi32(dev, fc + 48, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_GET));
 172
 173 out:
 174         nv10_fifo_do_load_context(dev, pfifo->channels - 1);
 175         nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH1, pfifo->channels - 1);
 176         return 0;
 177 }
 178
 179 static void
 180 nv10_fifo_init_reset(struct drm_device *dev)
 181 {
 182         nv_wr32(dev, NV03_PMC_ENABLE,
 183                 nv_rd32(dev, NV03_PMC_ENABLE) & ~NV_PMC_ENABLE_PFIFO);
 184         nv_wr32(dev, NV03_PMC_ENABLE,
 185                 nv_rd32(dev, NV03_PMC_ENABLE) |  NV_PMC_ENABLE_PFIFO);
 186
 187         nv_wr32(dev, 0x003224, 0x000f0078);
 188         nv_wr32(dev, 0x002044, 0x0101ffff);
 189         nv_wr32(dev, 0x002040, 0x000000ff);
 190         nv_wr32(dev, 0x002500, 0x00000000);
 191         nv_wr32(dev, 0x003000, 0x00000000);
 192         nv_wr32(dev, 0x003050, 0x00000000);
 193
 194         nv_wr32(dev, 0x003258, 0x00000000);
 195         nv_wr32(dev, 0x003210, 0x00000000);
 196         nv_wr32(dev, 0x003270, 0x00000000);
 197 }
 198
 199 static void
 200 nv10_fifo_init_ramxx(struct drm_device *dev)
 201 {
 202         struct drm_nouveau_private *dev_priv = dev->dev_private;
 203
 204         nv_wr32(dev, NV03_PFIFO_RAMHT, (0x03 << 24) /* search 128 */ |
 205                                        ((dev_priv->ramht_bits - 9) << 16) |
 206                                        (dev_priv->ramht_offset >> 8));
 207         nv_wr32(dev, NV03_PFIFO_RAMRO, dev_priv->ramro_offset>>8);
 208
 209         if (dev_priv->chipset < 0x17) {
 210                 nv_wr32(dev, NV03_PFIFO_RAMFC, dev_priv->ramfc_offset >> 8);
 211         } else {
 212                 nv_wr32(dev, NV03_PFIFO_RAMFC, (dev_priv->ramfc_offset >> 8) |
 213                                                (1 << 16) /* 64 Bytes entry*/);
 214         }
 215 }
 216
 217 static void
 218 nv10_fifo_init_intr(struct drm_device *dev)
 219 {
 220         nv_wr32(dev, 0x002100, 0xffffffff);
 221         nv_wr32(dev, 0x002140, 0xffffffff);
 222 }
 223
 224 int
 225 nv10_fifo_init(struct drm_device *dev)
 226 {
 227         struct drm_nouveau_private *dev_priv = dev->dev_private;
 228         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 229         int i;
 230
 231         nv10_fifo_init_reset(dev);
 232         nv10_fifo_init_ramxx(dev);
 233
 234         nv10_fifo_do_load_context(dev, pfifo->channels - 1);
 235         nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH1, pfifo->channels - 1);
 236
 237         nv10_fifo_init_intr(dev);
 238         pfifo->enable(dev);
 239         pfifo->reassign(dev, true);
 240
 241         for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
 242                 if (dev_priv->fifos[i]) {
 243                         uint32_t mode = nv_rd32(dev, NV04_PFIFO_MODE);
 244                         nv_wr32(dev, NV04_PFIFO_MODE, mode | (1 << i));
 245                 }
 246         }
 247
 248         return 0;
 249 }