sys/external/bsd/drm/dist/libdrm/nouveau/nouveau_pushbuf.h

   1 /*
   2  * Copyright 2007 Nouveau Project
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #ifndef __NOUVEAU_PUSHBUF_H__
  24 #define __NOUVEAU_PUSHBUF_H__
  25
  26 #include <assert.h>
  27 #include <string.h>
  28
  29 #include "nouveau_bo.h"
  30 #include "nouveau_grobj.h"
  31
  32 struct nouveau_pushbuf {
  33         struct nouveau_channel *channel;
  34
  35         unsigned remaining;
  36         uint32_t *cur;
  37 };
  38
  39 int
  40 nouveau_pushbuf_flush(struct nouveau_channel *, unsigned min);
  41
  42 int
  43 nouveau_pushbuf_emit_reloc(struct nouveau_channel *, void *ptr,
  44                            struct nouveau_bo *, uint32_t data, uint32_t flags,
  45                            uint32_t vor, uint32_t tor);
  46
  47 /* Push buffer access macros */
  48 static __inline__ void
  49 OUT_RING(struct nouveau_channel *chan, unsigned data)
  50 {
  51         *(chan->pushbuf->cur++) = (data);
  52 }
  53
  54 static __inline__ void
  55 OUT_RINGp(struct nouveau_channel *chan, const void *data, unsigned size)
  56 {
  57         memcpy(chan->pushbuf->cur, data, size * 4);
  58         chan->pushbuf->cur += size;
  59 }
  60
  61 static __inline__ void
  62 OUT_RINGf(struct nouveau_channel *chan, float f)
  63 {
  64         union { uint32_t i; float f; } c;
  65         c.f = f;
  66         OUT_RING(chan, c.i);
  67 }
  68
  69 static __inline__ unsigned
  70 AVAIL_RING(struct nouveau_channel *chan)
  71 {
  72         return chan->pushbuf->remaining;
  73 }
  74
  75 static __inline__ void
  76 WAIT_RING(struct nouveau_channel *chan, unsigned size)
  77 {
  78         if (chan->pushbuf->remaining < size)
  79                 nouveau_pushbuf_flush(chan, size);
  80 }
  81
  82 static __inline__ void
  83 BEGIN_RING(struct nouveau_channel *chan, struct nouveau_grobj *gr,
  84            unsigned mthd, unsigned size)
  85 {
  86         if (gr->bound == NOUVEAU_GROBJ_UNBOUND)
  87                 nouveau_grobj_autobind(gr);
  88         chan->subc[gr->subc].sequence = chan->subc_sequence++;
  89
  90         WAIT_RING(chan, size + 1);
  91         OUT_RING(chan, (gr->subc << 13) | (size << 18) | mthd);
  92         chan->pushbuf->remaining -= (size + 1);
  93 }
  94
  95 static __inline__ void
  96 FIRE_RING(struct nouveau_channel *chan)
  97 {
  98         nouveau_pushbuf_flush(chan, 0);
  99 }
 100
 101 static __inline__ void
 102 BIND_RING(struct nouveau_channel *chan, struct nouveau_grobj *gr, unsigned sc)
 103 {
 104         struct nouveau_subchannel *subc = &gr->channel->subc[sc];
 105
 106         if (subc->gr) {
 107                 if (subc->gr->bound == NOUVEAU_GROBJ_BOUND_EXPLICIT)
 108                         assert(0);
 109                 subc->gr->bound = NOUVEAU_GROBJ_UNBOUND;
 110         }
 111         subc->gr = gr;
 112         subc->gr->subc = sc;
 113         subc->gr->bound = NOUVEAU_GROBJ_BOUND_EXPLICIT;
 114
 115         BEGIN_RING(chan, gr, 0x0000, 1);
 116         OUT_RING  (chan, gr->handle);
 117 }
 118
 119 static __inline__ void
 120 OUT_RELOC(struct nouveau_channel *chan, struct nouveau_bo *bo,
 121           unsigned data, unsigned flags, unsigned vor, unsigned tor)
 122 {
 123         nouveau_pushbuf_emit_reloc(chan, chan->pushbuf->cur++, bo,
 124                                    data, flags, vor, tor);
 125 }
 126
 127 /* Raw data + flags depending on FB/TT buffer */
 128 static __inline__ void
 129 OUT_RELOCd(struct nouveau_channel *chan, struct nouveau_bo *bo,
 130            unsigned data, unsigned flags, unsigned vor, unsigned tor)
 131 {
 132         OUT_RELOC(chan, bo, data, flags | NOUVEAU_BO_OR, vor, tor);
 133 }
 134
 135 /* FB/TT object handle */
 136 static __inline__ void
 137 OUT_RELOCo(struct nouveau_channel *chan, struct nouveau_bo *bo,
 138            unsigned flags)
 139 {
 140         OUT_RELOC(chan, bo, 0, flags | NOUVEAU_BO_OR,
 141                   chan->vram->handle, chan->gart->handle);
 142 }
 143
 144 /* Low 32-bits of offset */
 145 static __inline__ void
 146 OUT_RELOCl(struct nouveau_channel *chan, struct nouveau_bo *bo,
 147            unsigned delta, unsigned flags)
 148 {
 149         OUT_RELOC(chan, bo, delta, flags | NOUVEAU_BO_LOW, 0, 0);
 150 }
 151
 152 /* High 32-bits of offset */
 153 static __inline__ void
 154 OUT_RELOCh(struct nouveau_channel *chan, struct nouveau_bo *bo,
 155            unsigned delta, unsigned flags)
 156 {
 157         OUT_RELOC(chan, bo, delta, flags | NOUVEAU_BO_HIGH, 0, 0);
 158 }
 159
 160 #endif