src/mesa/drivers/dri/unichrome/xf86drmVIA.c

   1 /*
   2  * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
   3  * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #ifdef XFree86Server
  26 # include "xf86.h"
  27 # include "xf86_OSproc.h"
  28 # include "xf86_ansic.h"
  29 # define _DRM_MALLOC xalloc
  30 # define _DRM_FREE   xfree
  31 # ifndef XFree86LOADER
  32 #  include <sys/mman.h>
  33 # endif
  34 #else
  35 # include <stdio.h>
  36 # include <stdlib.h>
  37 # include <unistd.h>
  38 # include <string.h>
  39 # include <ctype.h>
  40 # include <fcntl.h>
  41 # include <errno.h>
  42 # include <signal.h>
  43 # include <sys/types.h>
  44 # include <sys/ioctl.h>
  45 # include <sys/mman.h>
  46 # include <sys/time.h>
  47 #include "imports.h"
  48 #define _DRM_MALLOC MALLOC
  49 #define _DRM_FREE   FREE
  50 #endif
  51
  52 /* Not all systems have MAP_FAILED defined */
  53 #ifndef MAP_FAILED
  54 #define MAP_FAILED ((void *)-1)
  55 #endif
  56
  57 #ifdef __linux__
  58 #include <sys/sysmacros.h>      /* for makedev() */
  59 #endif
  60 #include "xf86drm.h"
  61 #include "xf86drmVIA.h"
  62 #include "drm.h"
  63 #include "via_common.h"
  64 int drmVIAAgpInit(int fd, int offset, int size)
  65 {
  66     drm_via_agp_t agp;
  67     agp.offset = offset;
  68     agp.size = size;
  69
  70     if (ioctl(fd, DRM_IOCTL_VIA_AGP_INIT, &agp) < 0) {
  71          return -errno;
  72     }
  73     else {
  74         return 0;
  75     }
  76 }
  77
  78 int drmVIAFBInit(int fd, int offset, int size)
  79 {
  80     drm_via_fb_t fb;
  81     fb.offset = offset;
  82     fb.size = size;
  83
  84     if (ioctl(fd, DRM_IOCTL_VIA_FB_INIT, &fb) < 0) {
  85         return -errno;
  86     }
  87     else
  88         return 0;
  89 }
  90
  91 int drmVIAInitMAP(int fd, drmVIAInit *info)
  92 {
  93     drm_via_init_t init;
  94
  95     memset(&init, 0, sizeof(drm_via_init_t));
  96     init.func = VIA_INIT_MAP;
  97     init.sarea_priv_offset = info->sarea_priv_offset;
  98     init.fb_offset = info->fb_offset;
  99     init.mmio_offset = info->mmio_offset;
 100     init.agpAddr = info->agpAddr;
 101
 102     if (ioctl(fd, DRM_IOCTL_VIA_MAP_INIT, &init ) < 0) {
 103         return -errno;
 104     }
 105     else
 106         return 0;
 107 }
 108
 109 int drmVIAAllocateDMA(int fd, drmVIADMABuf *buf)
 110 {
 111     if (drmAddMap(fd, 0, buf->size,
 112                    DRM_SHM, 0,
 113                    &buf->index) < 0) {
 114                 return -errno;
 115     }
 116
 117     if (drmMap(fd,(drm_handle_t)buf->index,
 118                 buf->size,(drmAddressPtr)(&buf->address)) < 0) {
 119         return -errno;
 120     }
 121
 122     memset(buf->address, 0, buf->size);
 123
 124     return 0;
 125 }
 126
 127 int drmVIAReleaseDMA(int fd, drmVIADMABuf *buf)
 128 {
 129     if (drmUnmap((drmAddress)(buf->address), buf->size) < 0)
 130         return -errno;
 131
 132     return 0;
 133 }