src/mesa/drivers/dri/i965/intel_ioctl.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include <stdio.h>
  30 #include <unistd.h>
  31 #include <errno.h>
  32 #include <sched.h>
  33
  34 #include "mtypes.h"
  35 #include "context.h"
  36 #include "swrast/swrast.h"
  37
  38 #include "intel_context.h"
  39 #include "intel_ioctl.h"
  40 #include "intel_batchbuffer.h"
  41 #include "intel_blit.h"
  42 #include "intel_regions.h"
  43 #include "drm.h"
  44 #include "bufmgr.h"
  45
  46
  47 int intelEmitIrqLocked( struct intel_context *intel )
  48 {
  49    int seq = 1;
  50
  51    if (!intel->no_hw) {
  52       drmI830IrqEmit ie;
  53       int ret;
  54
  55       assert(((*(int *)intel->driHwLock) & ~DRM_LOCK_CONT) ==
  56              (DRM_LOCK_HELD|intel->hHWContext));
  57
  58       ie.irq_seq = &seq;
  59
  60       ret = drmCommandWriteRead( intel->driFd, DRM_I830_IRQ_EMIT,
  61                                  &ie, sizeof(ie) );
  62       if ( ret ) {
  63          fprintf( stderr, "%s: drmI830IrqEmit: %d\n", __FUNCTION__, ret );
  64          exit(1);
  65       }
  66
  67       if (0)
  68          fprintf(stderr, "%s -->  %d\n", __FUNCTION__, seq );
  69    }
  70
  71    return seq;
  72 }
  73
  74 void intelWaitIrq( struct intel_context *intel, int seq )
  75 {
  76    if (!intel->no_hw) {
  77       drmI830IrqWait iw;
  78       int ret;
  79
  80       if (0)
  81          fprintf(stderr, "%s %d\n", __FUNCTION__, seq );
  82
  83       iw.irq_seq = seq;
  84
  85       do {
  86          ret = drmCommandWrite( intel->driFd, DRM_I830_IRQ_WAIT, &iw, sizeof(iw) );
  87
  88          /* This seems quite often to return before it should!?!
  89           */
  90       } while (ret == -EAGAIN || ret == -EINTR || (ret == 0 && seq > intel->sarea->last_dispatch));
  91
  92
  93       if ( ret ) {
  94          fprintf( stderr, "%s: drmI830IrqWait: %d\n", __FUNCTION__, ret );
  95
  96          if (intel->aub_file) {
  97             intel->vtbl.aub_dump_bmp( intel, intel->ctx.Visual.doubleBufferMode ? 1 : 0 );
  98          }
  99
 100          exit(1);
 101       }
 102    }
 103 }
 104
 105
 106 void intel_batch_ioctl( struct intel_context *intel,
 107                         GLuint start_offset,
 108                         GLuint used,
 109                         GLboolean ignore_cliprects)
 110 {
 111    drmI830BatchBuffer batch;
 112
 113    assert(intel->locked);
 114    assert(used);
 115
 116    if (0)
 117       fprintf(stderr, "%s used %d offset %x..%x ignore_cliprects %d\n",
 118               __FUNCTION__,
 119               used,
 120               start_offset,
 121               start_offset + used,
 122               ignore_cliprects);
 123
 124    batch.start = start_offset;
 125    batch.used = used;
 126    batch.cliprects = intel->pClipRects;
 127    batch.num_cliprects = ignore_cliprects ? 0 : intel->numClipRects;
 128    batch.DR1 = 0;
 129    batch.DR4 = ((((GLuint)intel->drawX) & 0xffff) |
 130                 (((GLuint)intel->drawY) << 16));
 131
 132    if (INTEL_DEBUG & DEBUG_DMA)
 133       fprintf(stderr, "%s: 0x%x..0x%x DR4: %x cliprects: %d\n",
 134               __FUNCTION__,
 135               batch.start,
 136               batch.start + batch.used * 4,
 137               batch.DR4, batch.num_cliprects);
 138
 139    if (!intel->no_hw) {
 140       if (drmCommandWrite (intel->driFd, DRM_I830_BATCHBUFFER, &batch,
 141                            sizeof(batch))) {
 142          fprintf(stderr, "DRM_I830_BATCHBUFFER: %d\n",  -errno);
 143          UNLOCK_HARDWARE(intel);
 144          exit(1);
 145       }
 146    }
 147 }
 148
 149 void intel_cmd_ioctl( struct intel_context *intel,
 150                       char *buf,
 151                       GLuint used,
 152                       GLboolean ignore_cliprects)
 153 {
 154    drmI830CmdBuffer cmd;
 155
 156    assert(intel->locked);
 157    assert(used);
 158
 159    cmd.buf = buf;
 160    cmd.sz = used;
 161    cmd.cliprects = intel->pClipRects;
 162    cmd.num_cliprects = ignore_cliprects ? 0 : intel->numClipRects;
 163    cmd.DR1 = 0;
 164    cmd.DR4 = ((((GLuint)intel->drawX) & 0xffff) |
 165               (((GLuint)intel->drawY) << 16));
 166
 167    if (INTEL_DEBUG & DEBUG_DMA)
 168       fprintf(stderr, "%s: 0x%x..0x%x DR4: %x cliprects: %d\n",
 169               __FUNCTION__,
 170               0,
 171               0 + cmd.sz,
 172               cmd.DR4, cmd.num_cliprects);
 173
 174    if (!intel->no_hw) {
 175       if (drmCommandWrite (intel->driFd, DRM_I830_CMDBUFFER, &cmd,
 176                            sizeof(cmd))) {
 177          fprintf(stderr, "DRM_I830_CMDBUFFER: %d\n",  -errno);
 178          UNLOCK_HARDWARE(intel);
 179          exit(1);
 180       }
 181    }
 182 }