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 *, u64 addr, int length);
  35
  36 /*
  37  * There's a hw race condition where you can't jump to your PUT offset,
  38  * to avoid this we jump to offset + SKIPS and fill the difference with
  39  * NOPs.
  40  *
  41  * xf86-video-nv configures the DMA fetch size to 32 bytes, and uses
  42  * a SKIPS value of 8.  Lets assume that the race condition is to do
  43  * with writing into the fetch area, we configure a fetch size of 128
  44  * bytes so we need a larger SKIPS value.
  45  */
  46 #define NOUVEAU_DMA_SKIPS (128 / 4)
  47
  48 /* Hardcoded object assignments to subchannels (subchannel id). */
  49 enum {
  50         NvSubCtxSurf2D  = 0,
  51         NvSubSw         = 1,
  52         NvSubImageBlit  = 2,
  53         NvSubGdiRect    = 3,
  54
  55         NvSub2D         = 3, /* DO NOT CHANGE - hardcoded for kepler gr fifo */
  56         NvSubCopy       = 4, /* DO NOT CHANGE - hardcoded for kepler gr fifo */
  57 };
  58
  59 /* Object handles - for stuff that's doesn't use handle == oclass. */
  60 enum {
  61         NvDmaFB         = 0x80000002,
  62         NvDmaTT         = 0x80000003,
  63         NvNotify0       = 0x80000006,
  64         NvSema          = 0x8000000f,
  65         NvEvoSema0      = 0x80000010,
  66         NvEvoSema1      = 0x80000011,
  67 };
  68
  69 #define NV_MEMORY_TO_MEMORY_FORMAT                                    0x00000039
  70 #define NV_MEMORY_TO_MEMORY_FORMAT_NAME                               0x00000000
  71 #define NV_MEMORY_TO_MEMORY_FORMAT_SET_REF                            0x00000050
  72 #define NV_MEMORY_TO_MEMORY_FORMAT_NOP                                0x00000100
  73 #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY                             0x00000104
  74 #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY_STYLE_WRITE                 0x00000000
  75 #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY_STYLE_WRITE_LE_AWAKEN       0x00000001
  76 #define NV_MEMORY_TO_MEMORY_FORMAT_DMA_NOTIFY                         0x00000180
  77 #define NV_MEMORY_TO_MEMORY_FORMAT_DMA_SOURCE                         0x00000184
  78 #define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN                          0x0000030c
  79
  80 #define NV50_MEMORY_TO_MEMORY_FORMAT                                  0x00005039
  81 #define NV50_MEMORY_TO_MEMORY_FORMAT_UNK200                           0x00000200
  82 #define NV50_MEMORY_TO_MEMORY_FORMAT_UNK21C                           0x0000021c
  83 #define NV50_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN_HIGH                   0x00000238
  84 #define NV50_MEMORY_TO_MEMORY_FORMAT_OFFSET_OUT_HIGH                  0x0000023c
  85
  86 static __must_check inline int
  87 RING_SPACE(struct nouveau_channel *chan, int size)
  88 {
  89         int ret;
  90
  91         ret = nouveau_dma_wait(chan, 1, size);
  92         if (ret)
  93                 return ret;
  94
  95         chan->dma.free -= size;
  96         return 0;
  97 }
  98
  99 static inline void
 100 OUT_RING(struct nouveau_channel *chan, int data)
 101 {
 102         nouveau_bo_wr32(chan->push.buffer, chan->dma.cur++, data);
 103 }
 104
 105 extern void
 106 OUT_RINGp(struct nouveau_channel *chan, const void *data, unsigned nr_dwords);
 107
 108 static inline void
 109 BEGIN_NV04(struct nouveau_channel *chan, int subc, int mthd, int size)
 110 {
 111         OUT_RING(chan, 0x00000000 | (subc << 13) | (size << 18) | mthd);
 112 }
 113
 114 static inline void
 115 BEGIN_NI04(struct nouveau_channel *chan, int subc, int mthd, int size)
 116 {
 117         OUT_RING(chan, 0x40000000 | (subc << 13) | (size << 18) | mthd);
 118 }
 119
 120 static inline void
 121 BEGIN_NVC0(struct nouveau_channel *chan, int subc, int mthd, int size)
 122 {
 123         OUT_RING(chan, 0x20000000 | (size << 16) | (subc << 13) | (mthd >> 2));
 124 }
 125
 126 static inline void
 127 BEGIN_NIC0(struct nouveau_channel *chan, int subc, int mthd, int size)
 128 {
 129         OUT_RING(chan, 0x60000000 | (size << 16) | (subc << 13) | (mthd >> 2));
 130 }
 131
 132 static inline void
 133 BEGIN_IMC0(struct nouveau_channel *chan, int subc, int mthd, u16 data)
 134 {
 135         OUT_RING(chan, 0x80000000 | (data << 16) | (subc << 13) | (mthd >> 2));
 136 }
 137
 138 #define WRITE_PUT(val) do {                                                    \
 139         mb();                                                   \
 140         nouveau_bo_rd32(chan->push.buffer, 0);                                 \
 141         nvif_wr32(&chan->user, chan->user_put, ((val) << 2) + chan->push.addr);\
 142 } while (0)
 143
 144 static inline void
 145 FIRE_RING(struct nouveau_channel *chan)
 146 {
 147         if (chan->dma.cur == chan->dma.put)
 148                 return;
 149         chan->accel_done = true;
 150
 151         if (chan->dma.ib_max) {
 152                 nv50_dma_push(chan, chan->push.addr + (chan->dma.put << 2),
 153                               (chan->dma.cur - chan->dma.put) << 2);
 154         } else {
 155                 WRITE_PUT(chan->dma.cur);
 156         }
 157
 158         chan->dma.put = chan->dma.cur;
 159 }
 160
 161 static inline void
 162 WIND_RING(struct nouveau_channel *chan)
 163 {
 164         chan->dma.cur = chan->dma.put;
 165 }
 166
 167 /* FIFO methods */
 168 #define NV01_SUBCHAN_OBJECT                                          0x00000000
 169 #define NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH                          0x00000010
 170 #define NV84_SUBCHAN_SEMAPHORE_ADDRESS_LOW                           0x00000014
 171 #define NV84_SUBCHAN_SEMAPHORE_SEQUENCE                              0x00000018
 172 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER                               0x0000001c
 173 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_EQUAL                 0x00000001
 174 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG                    0x00000002
 175 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL                0x00000004
 176 #define NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD                         0x00001000
 177 #define NV84_SUBCHAN_UEVENT                                          0x00000020
 178 #define NV84_SUBCHAN_WRCACHE_FLUSH                                   0x00000024
 179 #define NV10_SUBCHAN_REF_CNT                                         0x00000050
 180 #define NV11_SUBCHAN_DMA_SEMAPHORE                                   0x00000060
 181 #define NV11_SUBCHAN_SEMAPHORE_OFFSET                                0x00000064
 182 #define NV11_SUBCHAN_SEMAPHORE_ACQUIRE                               0x00000068
 183 #define NV11_SUBCHAN_SEMAPHORE_RELEASE                               0x0000006c
 184 #define NV40_SUBCHAN_YIELD                                           0x00000080
 185
 186 /* NV_SW object class */
 187 #define NV_SW_DMA_VBLSEM                                             0x0000018c
 188 #define NV_SW_VBLSEM_OFFSET                                          0x00000400
 189 #define NV_SW_VBLSEM_RELEASE_VALUE                                   0x00000404
 190 #define NV_SW_VBLSEM_RELEASE                                         0x00000408
 191 #define NV_SW_PAGE_FLIP                                              0x00000500
 192
 193 #endif