src/loader/loader.c

   1 /*
   2  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
   3  *
   4  * This code is derived from the following files.
   5  *
   6  * * src/glx/dri3_common.c
   7  * Copyright © 2013 Keith Packard
   8  *
   9  * * src/egl/drivers/dri2/common.c
  10  * * src/gbm/backends/dri/driver_name.c
  11  * Copyright © 2011 Intel Corporation
  12  *
  13  * Authors:
  14  *    Kristian Høgsberg <krh@bitplanet.net>
  15  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  16  *
  17  * * src/gallium/targets/egl-static/egl.c
  18  * Copyright (C) 2010-2011 LunarG Inc.
  19  *
  20  * Authors:
  21  *    Chia-I Wu <olv@lunarg.com>
  22  *
  23  * * src/gallium/state_trackers/egl/drm/native_drm.c
  24  * Copyright (C) 2010 Chia-I Wu <olv@0xlab.org>
  25  *
  26  * * src/egl/drivers/dri2/platform_android.c
  27  *
  28  * Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
  29  * Copyright (C) 2010-2011 LunarG Inc.
  30  *
  31  * Based on platform_x11, which has
  32  *
  33  * Copyright © 2011 Intel Corporation
  34  *
  35  * * src/gallium/auxiliary/pipe-loader/pipe_loader_drm.c
  36  * Copyright 2011 Intel Corporation
  37  * Copyright 2012 Francisco Jerez
  38  * All Rights Reserved.
  39  *
  40  * Authors:
  41  *    Kristian Høgsberg <krh@bitplanet.net>
  42  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  43  *
  44  * Permission is hereby granted, free of charge, to any person obtaining a
  45  * copy of this software and associated documentation files (the "Software"),
  46  * to deal in the Software without restriction, including without limitation
  47  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  48  * and/or sell copies of the Software, and to permit persons to whom the
  49  * Software is furnished to do so, subject to the following conditions:
  50  *
  51  * The above copyright notice and this permission notice (including the next
  52  * paragraph) shall be included in all copies or substantial portions of the
  53  * Software.
  54  *
  55  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  56  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  57  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  58  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  59  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  60  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  61  * SOFTWARE.
  62  *
  63  * Authors:
  64  *    Rob Clark <robclark@freedesktop.org>
  65  */
  66
  67 #include <stdarg.h>
  68 #include <stdio.h>
  69 #include <string.h>
  70 #include "loader.h"
  71
  72 #include <xf86drm.h>
  73
  74 #define __IS_LOADER
  75 #include "pci_ids/pci_id_driver_map.h"
  76
  77 static void default_logger(int level, const char *fmt, ...)
  78 {
  79    if (level >= _LOADER_WARNING) {
  80       va_list args;
  81       va_start(args, fmt);
  82       vfprintf(stderr, fmt, args);
  83       va_end(args);
  84       fprintf(stderr, "\n");
  85    }
  86 }
  87
  88 static void (*log)(int level, const char *fmt, ...) = default_logger;
  89
  90 #ifdef HAVE_LIBUDEV
  91 #include <libudev.h>
  92
  93 static inline struct udev_device *
  94 udev_device_new_from_fd(struct udev *udev, int fd)
  95 {
  96    struct udev_device *device;
  97    struct stat buf;
  98
  99    if (fstat(fd, &buf) < 0) {
 100       log(_LOADER_WARNING, "MESA-LOADER: failed to stat fd %d", fd);
 101       return NULL;
 102    }
 103
 104    device = udev_device_new_from_devnum(udev, 'c', buf.st_rdev);
 105    if (device == NULL) {
 106       log(_LOADER_WARNING,
 107               "MESA-LOADER: could not create udev device for fd %d", fd);
 108       return NULL;
 109    }
 110
 111    return device;
 112 }
 113
 114 int
 115 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 116 {
 117    struct udev *udev = NULL;
 118    struct udev_device *device = NULL, *parent;
 119    struct stat buf;
 120    const char *pci_id;
 121
 122    *chip_id = -1;
 123
 124    udev = udev_new();
 125    device = udev_device_new_from_fd(udev, fd);
 126    if (!device)
 127       goto out;
 128
 129    parent = udev_device_get_parent(device);
 130    if (parent == NULL) {
 131       log(_LOADER_WARNING, "MESA-LOADER: could not get parent device");
 132       goto out;
 133    }
 134
 135    pci_id = udev_device_get_property_value(parent, "PCI_ID");
 136    if (pci_id == NULL ||
 137        sscanf(pci_id, "%x:%x", vendor_id, chip_id) != 2) {
 138       log(_LOADER_WARNING, "MESA-LOADER: malformed or no PCI ID");
 139       *chip_id = -1;
 140       goto out;
 141    }
 142
 143 out:
 144    if (device)
 145       udev_device_unref(device);
 146    if (udev)
 147       udev_unref(udev);
 148
 149    return (*chip_id >= 0);
 150 }
 151
 152 #elif defined(ANDROID) && !defined(_EGL_NO_DRM)
 153
 154 /* for i915 */
 155 #include <i915_drm.h>
 156 /* for radeon */
 157 #include <radeon_drm.h>
 158
 159 int
 160 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 161 {
 162    drmVersionPtr version;
 163
 164    *chip_id = -1;
 165
 166    version = drmGetVersion(fd);
 167    if (!version) {
 168       log(_LOADER_WARNING, "MESA-LOADER: invalid drm fd");
 169       return FALSE;
 170    }
 171    if (!version->name) {
 172       log(_LOADER_WARNING, "MESA-LOADER: unable to determine the driver name");
 173       drmFreeVersion(version);
 174       return FALSE;
 175    }
 176
 177    if (strcmp(version->name, "i915") == 0) {
 178       struct drm_i915_getparam gp;
 179       int ret;
 180
 181       *vendor_id = 0x8086;
 182
 183       memset(&gp, 0, sizeof(gp));
 184       gp.param = I915_PARAM_CHIPSET_ID;
 185       gp.value = chip_id;
 186       ret = drmCommandWriteRead(fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 187       if (ret) {
 188          log(_LOADER_WARNING, "MESA-LOADER: failed to get param for i915");
 189          *chip_id = -1;
 190       }
 191    }
 192    else if (strcmp(version->name, "radeon") == 0) {
 193       struct drm_radeon_info info;
 194       int ret;
 195
 196       *vendor_id = 0x1002;
 197
 198       memset(&info, 0, sizeof(info));
 199       info.request = RADEON_INFO_DEVICE_ID;
 200       info.value = (unsigned long) chip_id;
 201       ret = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 202       if (ret) {
 203          log(_LOADER_WARNING, "MESA-LOADER: failed to get info for radeon");
 204          *chip_id = -1;
 205       }
 206    }
 207    else if (strcmp(version->name, "nouveau") == 0) {
 208       *vendor_id = 0x10de;
 209       /* not used */
 210       *chip_id = 0;
 211    }
 212    else if (strcmp(version->name, "vmwgfx") == 0) {
 213       *vendor_id = 0x15ad;
 214       /* assume SVGA II */
 215       *chip_id = 0x0405;
 216    }
 217
 218    drmFreeVersion(version);
 219
 220    return (*chip_id >= 0);
 221 }
 222
 223 #else
 224
 225 int
 226 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 227 {
 228    return 0;
 229 }
 230
 231 #endif
 232
 233
 234 char *
 235 loader_get_device_name_for_fd(int fd)
 236 {
 237    char *device_name = NULL;
 238 #ifdef HAVE_LIBUDEV
 239    struct udev *udev;
 240    struct udev_device *device;
 241    const char *const_device_name;
 242
 243    udev = udev_new();
 244    device = udev_device_new_from_fd(udev, fd);
 245    if (device == NULL)
 246       return NULL;
 247
 248    const_device_name = udev_device_get_devnode(device);
 249    if (!const_device_name)
 250       goto out;
 251    device_name = strdup(const_device_name);
 252
 253 out:
 254    udev_device_unref(device);
 255    udev_unref(udev);
 256 #endif
 257    return device_name;
 258 }
 259
 260 char *
 261 loader_get_driver_for_fd(int fd, unsigned driver_types)
 262 {
 263    int vendor_id, chip_id, i, j;
 264    char *driver = NULL;
 265
 266    if (!driver_types)
 267       driver_types = _LOADER_GALLIUM | _LOADER_DRI;
 268
 269    if (!loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
 270       log(_LOADER_WARNING, "failed to get driver name for fd %d", fd);
 271       return NULL;
 272    }
 273
 274    for (i = 0; driver_map[i].driver; i++) {
 275       if (vendor_id != driver_map[i].vendor_id)
 276          continue;
 277
 278       if (!(driver_types & driver_map[i].driver_types))
 279          continue;
 280
 281       if (driver_map[i].num_chips_ids == -1) {
 282          driver = strdup(driver_map[i].driver);
 283          goto out;
 284       }
 285
 286       for (j = 0; j < driver_map[i].num_chips_ids; j++)
 287          if (driver_map[i].chip_ids[j] == chip_id) {
 288             driver = strdup(driver_map[i].driver);
 289             goto out;
 290          }
 291    }
 292
 293 out:
 294    log(driver ? _LOADER_INFO : _LOADER_WARNING,
 295          "pci id for fd %d: %04x:%04x, driver %s",
 296          fd, vendor_id, chip_id, driver);
 297    return driver;
 298 }
 299
 300 void
 301 loader_set_logger(void (*logger)(int level, const char *fmt, ...))
 302 {
 303    log = logger;
 304 }