sys/external/bsd/drm/dist/libdrm/nouveau/nouveau_device.c

   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 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <errno.h>
  26
  27 #include "nouveau_private.h"
  28
  29 #if NOUVEAU_DRM_HEADER_PATCHLEVEL != 12
  30 #error nouveau_drm.h does not match expected patchlevel, update libdrm.
  31 #endif
  32
  33 int
  34 nouveau_device_open_existing(struct nouveau_device **dev, int close,
  35                              int fd, drm_context_t ctx)
  36 {
  37         struct nouveau_device_priv *nvdev;
  38         drmVersionPtr ver;
  39         uint64_t value;
  40         int ret;
  41
  42         if (!dev || *dev)
  43             return -EINVAL;
  44
  45         ver = drmGetVersion(fd);
  46         if (!ver || ver->version_patchlevel != NOUVEAU_DRM_HEADER_PATCHLEVEL)
  47                 return -EINVAL;
  48         drmFreeVersion(ver);
  49
  50         nvdev = calloc(1, sizeof(*nvdev));
  51         if (!nvdev)
  52             return -ENOMEM;
  53         nvdev->fd = fd;
  54         nvdev->ctx = ctx;
  55         nvdev->needs_close = close;
  56
  57         ret = drmCommandNone(nvdev->fd, DRM_NOUVEAU_CARD_INIT);
  58         if (ret) {
  59                 nouveau_device_close((void *)&nvdev);
  60                 return ret;
  61         }
  62
  63         ret = nouveau_device_get_param(&nvdev->base,
  64                                        NOUVEAU_GETPARAM_MM_ENABLED, &value);
  65         if (ret) {
  66                 nouveau_device_close((void *)&nvdev);
  67                 return ret;
  68         }
  69         nvdev->mm_enabled = value;
  70
  71         ret = nouveau_device_get_param(&nvdev->base,
  72                                        NOUVEAU_GETPARAM_VM_VRAM_BASE, &value);
  73         if (ret) {
  74                 nouveau_device_close((void *)&nvdev);
  75                 return ret;
  76         }
  77         nvdev->base.vm_vram_base = value;
  78
  79         ret = nouveau_device_get_param(&nvdev->base,
  80                                        NOUVEAU_GETPARAM_FB_SIZE, &value);
  81         if (ret) {
  82                 nouveau_device_close((void *)&nvdev);
  83                 return ret;
  84         }
  85         nvdev->vram_aper_size = value;
  86
  87         ret = nouveau_device_get_param(&nvdev->base,
  88                                        NOUVEAU_GETPARAM_AGP_SIZE, &value);
  89         if (ret) {
  90                 nouveau_device_close((void *)&nvdev);
  91                 return ret;
  92         }
  93         nvdev->gart_aper_size = value;
  94
  95         ret = nouveau_bo_init(&nvdev->base);
  96         if (ret) {
  97                 nouveau_device_close((void *)&nvdev);
  98                 return ret;
  99         }
 100
 101         ret = nouveau_device_get_param(&nvdev->base,
 102                                        NOUVEAU_GETPARAM_CHIPSET_ID, &value);
 103         if (ret) {
 104                 nouveau_device_close((void *)&nvdev);
 105                 return ret;
 106         }
 107         nvdev->base.chipset = value;
 108
 109         *dev = &nvdev->base;
 110         return 0;
 111 }
 112
 113 int
 114 nouveau_device_open(struct nouveau_device **dev, const char *busid)
 115 {
 116         drm_context_t ctx;
 117         int fd, ret;
 118
 119         if (!dev || *dev)
 120                 return -EINVAL;
 121
 122         fd = drmOpen("nouveau", busid);
 123         if (fd < 0)
 124                 return -EINVAL;
 125
 126         ret = drmCreateContext(fd, &ctx);
 127         if (ret) {
 128                 drmClose(fd);
 129                 return ret;
 130         }
 131
 132         ret = nouveau_device_open_existing(dev, 1, fd, ctx);
 133         if (ret) {
 134             drmDestroyContext(fd, ctx);
 135             drmClose(fd);
 136             return ret;
 137         }
 138
 139         return 0;
 140 }
 141
 142 void
 143 nouveau_device_close(struct nouveau_device **dev)
 144 {
 145         struct nouveau_device_priv *nvdev;
 146
 147         if (!dev || !*dev)
 148                 return;
 149         nvdev = nouveau_device(*dev);
 150         *dev = NULL;
 151
 152         nouveau_bo_takedown(&nvdev->base);
 153
 154         if (nvdev->needs_close) {
 155                 drmDestroyContext(nvdev->fd, nvdev->ctx);
 156                 drmClose(nvdev->fd);
 157         }
 158         free(nvdev);
 159 }
 160
 161 int
 162 nouveau_device_get_param(struct nouveau_device *dev,
 163                          uint64_t param, uint64_t *value)
 164 {
 165         struct nouveau_device_priv *nvdev = nouveau_device(dev);
 166         struct drm_nouveau_getparam g;
 167         int ret;
 168
 169         if (!nvdev || !value)
 170                 return -EINVAL;
 171
 172         g.param = param;
 173         ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_GETPARAM,
 174                                   &g, sizeof(g));
 175         if (ret)
 176                 return ret;
 177
 178         *value = g.value;
 179         return 0;
 180 }
 181
 182 int
 183 nouveau_device_set_param(struct nouveau_device *dev,
 184                          uint64_t param, uint64_t value)
 185 {
 186         struct nouveau_device_priv *nvdev = nouveau_device(dev);
 187         struct drm_nouveau_setparam s;
 188         int ret;
 189
 190         if (!nvdev)
 191                 return -EINVAL;
 192
 193         s.param = param;
 194         s.value = value;
 195         ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_SETPARAM,
 196                                   &s, sizeof(s));
 197         if (ret)
 198                 return ret;
 199
 200         return 0;
 201 }
 202