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, lastdispatch;
  79
  80       if (0)
  81          fprintf(stderr, "%s %d\n", __FUNCTION__, seq );
  82
  83       iw.irq_seq = seq;
  84
  85       do {
  86          lastdispatch = intel->sarea->last_dispatch;
  87          ret = drmCommandWrite( intel->driFd, DRM_I830_IRQ_WAIT, &iw, sizeof(iw) );
  88
  89          /* This seems quite often to return before it should!?!
  90           */
  91       } while (ret == -EAGAIN || ret == -EINTR || (ret == -EBUSY && lastdispatch != intel->sarea->last_dispatch) || (ret == 0 && seq > intel->sarea->last_dispatch));
  92
  93
  94       if ( ret ) {
  95          fprintf( stderr, "%s: drmI830IrqWait: %d\n", __FUNCTION__, ret );
  96
  97          if (intel->aub_file) {
  98             intel->vtbl.aub_dump_bmp( intel, intel->ctx.Visual.doubleBufferMode ? 1 : 0 );
  99          }
 100
 101          exit(1);
 102       }
 103    }
 104 }
 105
 106
 107 void intel_batch_ioctl( struct intel_context *intel,
 108                         GLuint start_offset,
 109                         GLuint used)
 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\n",
 118               __FUNCTION__,
 119               used,
 120               start_offset,
 121               start_offset + used);
 122
 123    batch.start = start_offset;
 124    batch.used = used;
 125    batch.cliprects = NULL;
 126    batch.num_cliprects = 0;
 127    batch.DR1 = 0;
 128    batch.DR4 = 0;
 129
 130    if (INTEL_DEBUG & DEBUG_DMA)
 131       fprintf(stderr, "%s: 0x%x..0x%x\n",
 132               __FUNCTION__,
 133               batch.start,
 134               batch.start + batch.used * 4);
 135
 136    if (!intel->no_hw) {
 137       if (drmCommandWrite (intel->driFd, DRM_I830_BATCHBUFFER, &batch,
 138                            sizeof(batch))) {
 139          fprintf(stderr, "DRM_I830_BATCHBUFFER: %d\n",  -errno);
 140          UNLOCK_HARDWARE(intel);
 141          exit(1);
 142       }
 143    }
 144 }
 145
 146 void intel_cmd_ioctl( struct intel_context *intel,
 147                       char *buf,
 148                       GLuint used)
 149 {
 150    drmI830CmdBuffer cmd;
 151
 152    assert(intel->locked);
 153    assert(used);
 154
 155    cmd.buf = buf;
 156    cmd.sz = used;
 157    cmd.cliprects = intel->pClipRects;
 158    cmd.num_cliprects = 0;
 159    cmd.DR1 = 0;
 160    cmd.DR4 = 0;
 161
 162    if (INTEL_DEBUG & DEBUG_DMA)
 163       fprintf(stderr, "%s: 0x%x..0x%x\n",
 164               __FUNCTION__,
 165               0,
 166               0 + cmd.sz);
 167
 168    if (!intel->no_hw) {
 169       if (drmCommandWrite (intel->driFd, DRM_I830_CMDBUFFER, &cmd,
 170                            sizeof(cmd))) {
 171          fprintf(stderr, "DRM_I830_CMDBUFFER: %d\n",  -errno);
 172          UNLOCK_HARDWARE(intel);
 173          exit(1);
 174       }
 175    }
 176 }