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         NvSubSw         = 1,
  51         NvSubImageBlit  = 2,
  52
  53         NvSub2D         = 3, /* DO NOT CHANGE - hardcoded for kepler gr fifo */
  54         NvSubCopy       = 4, /* DO NOT CHANGE - hardcoded for kepler gr fifo */
  55 };
  56
  57 /* Object handles - for stuff that's doesn't use handle == oclass. */
  58 enum {
  59         NvDmaFB         = 0x80000002,
  60         NvDmaTT         = 0x80000003,
  61         NvNotify0       = 0x80000006,
  62         NvSema          = 0x8000000f,
  63         NvEvoSema0      = 0x80000010,
  64         NvEvoSema1      = 0x80000011,
  65 };
  66
  67 #define NV_MEMORY_TO_MEMORY_FORMAT                                    0x00000039
  68 #define NV_MEMORY_TO_MEMORY_FORMAT_NAME                               0x00000000
  69 #define NV_MEMORY_TO_MEMORY_FORMAT_SET_REF                            0x00000050
  70 #define NV_MEMORY_TO_MEMORY_FORMAT_NOP                                0x00000100
  71 #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY                             0x00000104
  72 #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY_STYLE_WRITE                 0x00000000
  73 #define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY_STYLE_WRITE_LE_AWAKEN       0x00000001
  74 #define NV_MEMORY_TO_MEMORY_FORMAT_DMA_NOTIFY                         0x00000180
  75 #define NV_MEMORY_TO_MEMORY_FORMAT_DMA_SOURCE                         0x00000184
  76 #define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN                          0x0000030c
  77
  78 #define NV50_MEMORY_TO_MEMORY_FORMAT                                  0x00005039
  79 #define NV50_MEMORY_TO_MEMORY_FORMAT_UNK200                           0x00000200
  80 #define NV50_MEMORY_TO_MEMORY_FORMAT_UNK21C                           0x0000021c
  81 #define NV50_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN_HIGH                   0x00000238
  82 #define NV50_MEMORY_TO_MEMORY_FORMAT_OFFSET_OUT_HIGH                  0x0000023c
  83
  84 static __must_check inline int
  85 RING_SPACE(struct nouveau_channel *chan, int size)
  86 {
  87         int ret;
  88
  89         ret = nouveau_dma_wait(chan, 1, size);
  90         if (ret)
  91                 return ret;
  92
  93         chan->dma.free -= size;
  94         return 0;
  95 }
  96
  97 static inline void
  98 OUT_RING(struct nouveau_channel *chan, int data)
  99 {
 100         nouveau_bo_wr32(chan->push.buffer, chan->dma.cur++, data);
 101 }
 102
 103 static inline void
 104 BEGIN_NV04(struct nouveau_channel *chan, int subc, int mthd, int size)
 105 {
 106         OUT_RING(chan, 0x00000000 | (subc << 13) | (size << 18) | mthd);
 107 }
 108
 109 static inline void
 110 BEGIN_NVC0(struct nouveau_channel *chan, int subc, int mthd, int size)
 111 {
 112         OUT_RING(chan, 0x20000000 | (size << 16) | (subc << 13) | (mthd >> 2));
 113 }
 114
 115 static inline void
 116 BEGIN_IMC0(struct nouveau_channel *chan, int subc, int mthd, u16 data)
 117 {
 118         OUT_RING(chan, 0x80000000 | (data << 16) | (subc << 13) | (mthd >> 2));
 119 }
 120
 121 #define WRITE_PUT(val) do {                                                    \
 122         mb();                                                   \
 123         nouveau_bo_rd32(chan->push.buffer, 0);                                 \
 124         nvif_wr32(&chan->user, chan->user_put, ((val) << 2) + chan->push.addr);\
 125 } while (0)
 126
 127 static inline void
 128 FIRE_RING(struct nouveau_channel *chan)
 129 {
 130         if (chan->dma.cur == chan->dma.put)
 131                 return;
 132         chan->accel_done = true;
 133
 134         if (chan->dma.ib_max) {
 135                 nv50_dma_push(chan, chan->push.addr + (chan->dma.put << 2),
 136                               (chan->dma.cur - chan->dma.put) << 2);
 137         } else {
 138                 WRITE_PUT(chan->dma.cur);
 139         }
 140
 141         chan->dma.put = chan->dma.cur;
 142 }
 143
 144 static inline void
 145 WIND_RING(struct nouveau_channel *chan)
 146 {
 147         chan->dma.cur = chan->dma.put;
 148 }
 149
 150 /* FIFO methods */
 151 #define NV01_SUBCHAN_OBJECT                                          0x00000000
 152 #define NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH                          0x00000010
 153 #define NV84_SUBCHAN_SEMAPHORE_ADDRESS_LOW                           0x00000014
 154 #define NV84_SUBCHAN_SEMAPHORE_SEQUENCE                              0x00000018
 155 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER                               0x0000001c
 156 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_EQUAL                 0x00000001
 157 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG                    0x00000002
 158 #define NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL                0x00000004
 159 #define NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD                         0x00001000
 160 #define NV84_SUBCHAN_UEVENT                                          0x00000020
 161 #define NV84_SUBCHAN_WRCACHE_FLUSH                                   0x00000024
 162 #define NV10_SUBCHAN_REF_CNT                                         0x00000050
 163 #define NV11_SUBCHAN_DMA_SEMAPHORE                                   0x00000060
 164 #define NV11_SUBCHAN_SEMAPHORE_OFFSET                                0x00000064
 165 #define NV11_SUBCHAN_SEMAPHORE_ACQUIRE                               0x00000068
 166 #define NV11_SUBCHAN_SEMAPHORE_RELEASE                               0x0000006c
 167 #define NV40_SUBCHAN_YIELD                                           0x00000080
 168
 169 /* NV_SW object class */
 170 #define NV_SW_DMA_VBLSEM                                             0x0000018c
 171 #define NV_SW_VBLSEM_OFFSET                                          0x00000400
 172 #define NV_SW_VBLSEM_RELEASE_VALUE                                   0x00000404
 173 #define NV_SW_VBLSEM_RELEASE                                         0x00000408
 174 #define NV_SW_PAGE_FLIP                                              0x00000500
 175
 176 #endif