drivers/gpu/drm/nouveau/nouveau_dma.h

   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 #ifndef __NOUVEAU_DMA_H__
  28 #define __NOUVEAU_DMA_H__
  29
  30 #include "nouveau_bo.h"
  31 #include "nouveau_chan.h"
  32
  33 int nouveau_dma_wait(struct nouveau_channel *, int slots, int size);
  34 void nv50_dma_push(struct nouveau_channel *, struct nouveau_bo *,
  35                    int delta, int length);
  36
  37 /*
  38  * There's a hw race condition where you can't jump to your PUT offset,
  39  * to avoid this we jump to offset + SKIPS and fill the difference with
  40  * NOPs.
  41  *
  42  * xf86-video-nv configures the DMA fetch size to 32 bytes, and uses
  43  * a SKIPS value of 8.  Lets assume that the race condition is to do
  44  * with writing into the fetch area, we configure a fetch size of 128
  45  * bytes so we need a larger SKIPS value.
  46  */
  47 #define NOUVEAU_DMA_SKIPS (128 / 4)
  48
  49 /* Hardcoded object assignments to subchannels (subchannel id). */
  50 enum {
  51         NvSubCtxSurf2D  = 0,
  52         NvSubSw         = 1,
  53         NvSubImageBlit  = 2,
  54         NvSubGdiRect    = 3,
  55
  56         NvSub2D         = 3, /* DO NOT CHANGE - hardcoded for kepler gr fifo */
  57         NvSubCopy       = 4, /* DO NOT CHANGE - hardcoded for kepler gr fifo */
  58         FermiSw         = 5, /* DO NOT CHANGE (well.. 6/7 will work...) */
  59 };
  60
  61 /* Object handles. */
  62 enum {
  63         NvM2MF          = 0x80000001,
  64         NvDmaFB         = 0x80000002,
  65         NvDmaTT         = 0x80000003,
  66         NvNotify0       = 0x80000006,
  67         Nv2D            = 0x80000007,
  68         NvCtxSurf2D     = 0x80000008,
  69         NvRop           = 0x80000009,
  70         NvImagePatt     = 0x8000000a,
  71         NvClipRect      = 0x8000000b,
  72         NvGdiRect       = 0x8000000c,
  73         NvImageBlit     = 0x8000000d,
  74         NvSw            = 0x8000000e,
  75         NvSema          = 0x8000000f,
  76         NvEvoSema0      = 0x80000010,
  77         NvEvoSema1      = 0x80000011,
  78         NvNotify1       = 0x80000012,
  79
  80         /* G80+ display objects */
  81         NvEvoVRAM       = 0x01000000,
  82         NvEvoSync       = 0xcafe0000
  83 };
  84
  85 #define NV_MEMORY_TO_MEMORY_FORMAT                                    0x00000039
  86 #define NV_MEMORY_TO_MEMORY_FORMAT_NAME                               0x00000000
  87 #define NV_MEMORY_TO_MEMORY_FORMAT_SET_REF                            0x00000050
  88 #define NV_MEMORY_TO_MEMORY_FORMAT_NOP                                0x00000100
  89 #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY                             0x00000104
  90 #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY_STYLE_WRITE                 0x00000000
  91 #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY_STYLE_WRITE_LE_AWAKEN       0x00000001
  92 #define NV_MEMORY_TO_MEMORY_FORMAT_DMA_NOTIFY                         0x00000180
  93 #define NV_MEMORY_TO_MEMORY_FORMAT_DMA_SOURCE                         0x00000184
  94 #define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN                          0x0000030c
  95
  96 #define NV50_MEMORY_TO_MEMORY_FORMAT                                  0x00005039
  97 #define NV50_MEMORY_TO_MEMORY_FORMAT_UNK200                           0x00000200
  98 #define NV50_MEMORY_TO_MEMORY_FORMAT_UNK21C                           0x0000021c
  99 #define NV50_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN_HIGH                   0x00000238
 100 #define NV50_MEMORY_TO_MEMORY_FORMAT_OFFSET_OUT_HIGH                  0x0000023c
 101
 102 static __must_check inline int
 103 RING_SPACE(struct nouveau_channel *chan, int size)
 104 {
 105         int ret;
 106
 107         ret = nouveau_dma_wait(chan, 1, size);
 108         if (ret)
 109                 return ret;
 110
 111         chan->dma.free -= size;
 112         return 0;
 113 }
 114
 115 static inline void
 116 OUT_RING(struct nouveau_channel *chan, int data)
 117 {
 118         nouveau_bo_wr32(chan->push.buffer, chan->dma.cur++, data);
 119 }
 120
 121 extern void
 122 OUT_RINGp(struct nouveau_channel *chan, const void *data, unsigned nr_dwords);
 123
 124 static inline void
 125 BEGIN_NV04(struct nouveau_channel *chan, int subc, int mthd, int size)
 126 {
 127         OUT_RING(chan, 0x00000000 | (subc << 13) | (size << 18) | mthd);
 128 }
 129
 130 static inline void
 131 BEGIN_NI04(struct nouveau_channel *chan, int subc, int mthd, int size)
 132 {
 133         OUT_RING(chan, 0x40000000 | (subc << 13) | (size << 18) | mthd);
 134 }
 135
 136 static inline void
 137 BEGIN_NVC0(struct nouveau_channel *chan, int subc, int mthd, int size)
 138 {
 139         OUT_RING(chan, 0x20000000 | (size << 16) | (subc << 13) | (mthd >> 2));
 140 }
 141
 142 static inline void
 143 BEGIN_NIC0(struct nouveau_channel *chan, int subc, int mthd, int size)
 144 {
 145         OUT_RING(chan, 0x60000000 | (size << 16) | (subc << 13) | (mthd >> 2));
 146 }
 147
 148 static inline void
 149 BEGIN_IMC0(struct nouveau_channel *chan, int subc, int mthd, u16 data)
 150 {
 151         OUT_RING(chan, 0x80000000 | (data << 16) | (subc << 13) | (mthd >> 2));
 152 }
 153
 154 #define WRITE_PUT(val) do {                                                    \
 155         mb();                                                   \
 156         nouveau_bo_rd32(chan->push.buffer, 0);                                 \
 157         nvif_wr32(chan, chan->user_put, ((val) << 2) + chan->push.vma.offset); \
 158 } while (0)
 159
 160 static inline void
 161 FIRE_RING(struct nouveau_channel *chan)
 162 {
 163         if (chan->dma.cur == chan->dma.put)
 164                 return;
 165         chan->accel_done = true;
 166
 167         if (chan->dma.ib_max) {
 168                 nv50_dma_push(chan, chan->push.buffer, chan->dma.put << 2,
 169                               (chan->dma.cur - chan->dma.put) << 2);
 170         } else {
 171                 WRITE_PUT(chan->dma.cur);
 172         }
 173
 174         chan->dma.put = chan->dma.cur;
 175 }
 176
 177 static inline void
 178 WIND_RING(struct nouveau_channel *chan)
 179 {
 180         chan->dma.cur = chan->dma.put;
 181 }
 182
 183 /* FIFO methods */
 184 #define NV01_SUBCHAN_OBJECT                                          0x00000000
 185 #define NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH                          0x00000010
 186 #define NV84_SUBCHAN_SEMAPHORE_ADDRESS_LOW                           0x00000014
 187 #define NV84_SUBCHAN_SEMAPHORE_SEQUENCE                              0x00000018
 188 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER                               0x0000001c
 189 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_EQUAL                 0x00000001
 190 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG                    0x00000002
 191 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL                0x00000004
 192 #define NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD                         0x00001000
 193 #define NV84_SUBCHAN_UEVENT                                          0x00000020
 194 #define NV84_SUBCHAN_WRCACHE_FLUSH                                   0x00000024
 195 #define NV10_SUBCHAN_REF_CNT                                         0x00000050
 196 #define NV11_SUBCHAN_DMA_SEMAPHORE                                   0x00000060
 197 #define NV11_SUBCHAN_SEMAPHORE_OFFSET                                0x00000064
 198 #define NV11_SUBCHAN_SEMAPHORE_ACQUIRE                               0x00000068
 199 #define NV11_SUBCHAN_SEMAPHORE_RELEASE                               0x0000006c
 200 #define NV40_SUBCHAN_YIELD                                           0x00000080
 201
 202 /* NV_SW object class */
 203 #define NV_SW_DMA_VBLSEM                                             0x0000018c
 204 #define NV_SW_VBLSEM_OFFSET                                          0x00000400
 205 #define NV_SW_VBLSEM_RELEASE_VALUE                                   0x00000404
 206 #define NV_SW_VBLSEM_RELEASE                                         0x00000408
 207 #define NV_SW_PAGE_FLIP                                              0x00000500
 208
 209 #endif