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         dev_priv->engine.instmem.prepare_access(dev, true);
  59         nv_wi32(dev, fc +  0, chan->pushbuf_base);
  60         nv_wi32(dev, fc +  4, chan->pushbuf_base);
  61         nv_wi32(dev, fc + 12, chan->pushbuf->instance >> 4);
  62         nv_wi32(dev, fc + 20, NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
  63                               NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
  64                               NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8 |
  65 #ifdef __BIG_ENDIAN
  66                               NV_PFIFO_CACHE1_BIG_ENDIAN |
  67 #endif
  68                               0);
  69         dev_priv->engine.instmem.finish_access(dev);
  70
  71         /* enable the fifo dma operation */
  72         nv_wr32(dev, NV04_PFIFO_MODE,
  73                 nv_rd32(dev, NV04_PFIFO_MODE) | (1 << chan->id));
  74         return 0;
  75 }
  76
  77 void
  78 nv10_fifo_destroy_context(struct nouveau_channel *chan)
  79 {
  80         struct drm_device *dev = chan->dev;
  81
  82         nv_wr32(dev, NV04_PFIFO_MODE,
  83                         nv_rd32(dev, NV04_PFIFO_MODE) & ~(1 << chan->id));
  84
  85         nouveau_gpuobj_ref_del(dev, &chan->ramfc);
  86 }
  87
  88 static void
  89 nv10_fifo_do_load_context(struct drm_device *dev, int chid)
  90 {
  91         struct drm_nouveau_private *dev_priv = dev->dev_private;
  92         uint32_t fc = NV10_RAMFC(chid), tmp;
  93
  94         dev_priv->engine.instmem.prepare_access(dev, false);
  95
  96         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_PUT, nv_ri32(dev, fc + 0));
  97         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_GET, nv_ri32(dev, fc + 4));
  98         nv_wr32(dev, NV10_PFIFO_CACHE1_REF_CNT, nv_ri32(dev, fc + 8));
  99
 100         tmp = nv_ri32(dev, fc + 12);
 101         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_INSTANCE, tmp & 0xFFFF);
 102         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_DCOUNT, tmp >> 16);
 103
 104         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_STATE, nv_ri32(dev, fc + 16));
 105         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_FETCH, nv_ri32(dev, fc + 20));
 106         nv_wr32(dev, NV04_PFIFO_CACHE1_ENGINE, nv_ri32(dev, fc + 24));
 107         nv_wr32(dev, NV04_PFIFO_CACHE1_PULL1, nv_ri32(dev, fc + 28));
 108
 109         if (dev_priv->chipset < 0x17)
 110                 goto out;
 111
 112         nv_wr32(dev, NV10_PFIFO_CACHE1_ACQUIRE_VALUE, nv_ri32(dev, fc + 32));
 113         tmp = nv_ri32(dev, fc + 36);
 114         nv_wr32(dev, NV10_PFIFO_CACHE1_ACQUIRE_TIMESTAMP, tmp);
 115         nv_wr32(dev, NV10_PFIFO_CACHE1_ACQUIRE_TIMEOUT, nv_ri32(dev, fc + 40));
 116         nv_wr32(dev, NV10_PFIFO_CACHE1_SEMAPHORE, nv_ri32(dev, fc + 44));
 117         nv_wr32(dev, NV10_PFIFO_CACHE1_DMA_SUBROUTINE, nv_ri32(dev, fc + 48));
 118
 119 out:
 120         dev_priv->engine.instmem.finish_access(dev);
 121
 122         nv_wr32(dev, NV03_PFIFO_CACHE1_GET, 0);
 123         nv_wr32(dev, NV03_PFIFO_CACHE1_PUT, 0);
 124 }
 125
 126 int
 127 nv10_fifo_load_context(struct nouveau_channel *chan)
 128 {
 129         struct drm_device *dev = chan->dev;
 130         uint32_t tmp;
 131
 132         nv10_fifo_do_load_context(dev, chan->id);
 133
 134         nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH1,
 135                      NV03_PFIFO_CACHE1_PUSH1_DMA | chan->id);
 136         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_PUSH, 1);
 137
 138         /* Reset NV04_PFIFO_CACHE1_DMA_CTL_AT_INFO to INVALID */
 139         tmp = nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_CTL) & ~(1 << 31);
 140         nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_CTL, tmp);
 141
 142         return 0;
 143 }
 144
 145 int
 146 nv10_fifo_unload_context(struct drm_device *dev)
 147 {
 148         struct drm_nouveau_private *dev_priv = dev->dev_private;
 149         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 150         uint32_t fc, tmp;
 151         int chid;
 152
 153         chid = pfifo->channel_id(dev);
 154         if (chid < 0 || chid >= dev_priv->engine.fifo.channels)
 155                 return 0;
 156         fc = NV10_RAMFC(chid);
 157
 158         dev_priv->engine.instmem.prepare_access(dev, true);
 159
 160         nv_wi32(dev, fc +  0, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_PUT));
 161         nv_wi32(dev, fc +  4, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_GET));
 162         nv_wi32(dev, fc +  8, nv_rd32(dev, NV10_PFIFO_CACHE1_REF_CNT));
 163         tmp  = nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_INSTANCE) & 0xFFFF;
 164         tmp |= (nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_DCOUNT) << 16);
 165         nv_wi32(dev, fc + 12, tmp);
 166         nv_wi32(dev, fc + 16, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_STATE));
 167         nv_wi32(dev, fc + 20, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_FETCH));
 168         nv_wi32(dev, fc + 24, nv_rd32(dev, NV04_PFIFO_CACHE1_ENGINE));
 169         nv_wi32(dev, fc + 28, nv_rd32(dev, NV04_PFIFO_CACHE1_PULL1));
 170
 171         if (dev_priv->chipset < 0x17)
 172                 goto out;
 173
 174         nv_wi32(dev, fc + 32, nv_rd32(dev, NV10_PFIFO_CACHE1_ACQUIRE_VALUE));
 175         tmp = nv_rd32(dev, NV10_PFIFO_CACHE1_ACQUIRE_TIMESTAMP);
 176         nv_wi32(dev, fc + 36, tmp);
 177         nv_wi32(dev, fc + 40, nv_rd32(dev, NV10_PFIFO_CACHE1_ACQUIRE_TIMEOUT));
 178         nv_wi32(dev, fc + 44, nv_rd32(dev, NV10_PFIFO_CACHE1_SEMAPHORE));
 179         nv_wi32(dev, fc + 48, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_GET));
 180
 181 out:
 182         dev_priv->engine.instmem.finish_access(dev);
 183
 184         nv10_fifo_do_load_context(dev, pfifo->channels - 1);
 185         nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH1, pfifo->channels - 1);
 186         return 0;
 187 }
 188
 189 static void
 190 nv10_fifo_init_reset(struct drm_device *dev)
 191 {
 192         nv_wr32(dev, NV03_PMC_ENABLE,
 193                 nv_rd32(dev, NV03_PMC_ENABLE) & ~NV_PMC_ENABLE_PFIFO);
 194         nv_wr32(dev, NV03_PMC_ENABLE,
 195                 nv_rd32(dev, NV03_PMC_ENABLE) |  NV_PMC_ENABLE_PFIFO);
 196
 197         nv_wr32(dev, 0x003224, 0x000f0078);
 198         nv_wr32(dev, 0x002044, 0x0101ffff);
 199         nv_wr32(dev, 0x002040, 0x000000ff);
 200         nv_wr32(dev, 0x002500, 0x00000000);
 201         nv_wr32(dev, 0x003000, 0x00000000);
 202         nv_wr32(dev, 0x003050, 0x00000000);
 203
 204         nv_wr32(dev, 0x003258, 0x00000000);
 205         nv_wr32(dev, 0x003210, 0x00000000);
 206         nv_wr32(dev, 0x003270, 0x00000000);
 207 }
 208
 209 static void
 210 nv10_fifo_init_ramxx(struct drm_device *dev)
 211 {
 212         struct drm_nouveau_private *dev_priv = dev->dev_private;
 213
 214         nv_wr32(dev, NV03_PFIFO_RAMHT, (0x03 << 24) /* search 128 */ |
 215                                        ((dev_priv->ramht_bits - 9) << 16) |
 216                                        (dev_priv->ramht_offset >> 8));
 217         nv_wr32(dev, NV03_PFIFO_RAMRO, dev_priv->ramro_offset>>8);
 218
 219         if (dev_priv->chipset < 0x17) {
 220                 nv_wr32(dev, NV03_PFIFO_RAMFC, dev_priv->ramfc_offset >> 8);
 221         } else {
 222                 nv_wr32(dev, NV03_PFIFO_RAMFC, (dev_priv->ramfc_offset >> 8) |
 223                                                (1 << 16) /* 64 Bytes entry*/);
 224                 /* XXX nvidia blob set bit 18, 21,23 for nv20 & nv30 */
 225         }
 226 }
 227
 228 static void
 229 nv10_fifo_init_intr(struct drm_device *dev)
 230 {
 231         nv_wr32(dev, 0x002100, 0xffffffff);
 232         nv_wr32(dev, 0x002140, 0xffffffff);
 233 }
 234
 235 int
 236 nv10_fifo_init(struct drm_device *dev)
 237 {
 238         struct drm_nouveau_private *dev_priv = dev->dev_private;
 239         struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 240         int i;
 241
 242         nv10_fifo_init_reset(dev);
 243         nv10_fifo_init_ramxx(dev);
 244
 245         nv10_fifo_do_load_context(dev, pfifo->channels - 1);
 246         nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH1, pfifo->channels - 1);
 247
 248         nv10_fifo_init_intr(dev);
 249         pfifo->enable(dev);
 250         pfifo->reassign(dev, true);
 251
 252         for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
 253                 if (dev_priv->fifos[i]) {
 254                         uint32_t mode = nv_rd32(dev, NV04_PFIFO_MODE);
 255                         nv_wr32(dev, NV04_PFIFO_MODE, mode | (1 << i));
 256                 }
 257         }
 258
 259         return 0;
 260 }