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 #ifndef __NOT_HAVE_DRM_H
  73 #include <xf86drm.h>
  74 #endif
  75
  76 #define __IS_LOADER
  77 #include "pci_ids/pci_id_driver_map.h"
  78
  79 static void default_logger(int level, const char *fmt, ...)
  80 {
  81    if (level >= _LOADER_WARNING) {
  82       va_list args;
  83       va_start(args, fmt);
  84       vfprintf(stderr, fmt, args);
  85       va_end(args);
  86       fprintf(stderr, "\n");
  87    }
  88 }
  89
  90 static void (*log_)(int level, const char *fmt, ...) = default_logger;
  91
  92 #ifdef HAVE_LIBUDEV
  93 #include <libudev.h>
  94
  95 static inline struct udev_device *
  96 udev_device_new_from_fd(struct udev *udev, int fd)
  97 {
  98    struct udev_device *device;
  99    struct stat buf;
 100
 101    if (fstat(fd, &buf) < 0) {
 102       log_(_LOADER_WARNING, "MESA-LOADER: failed to stat fd %d", fd);
 103       return NULL;
 104    }
 105
 106    device = udev_device_new_from_devnum(udev, 'c', buf.st_rdev);
 107    if (device == NULL) {
 108       log_(_LOADER_WARNING,
 109               "MESA-LOADER: could not create udev device for fd %d", fd);
 110       return NULL;
 111    }
 112
 113    return device;
 114 }
 115
 116 int
 117 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 118 {
 119    struct udev *udev = NULL;
 120    struct udev_device *device = NULL, *parent;
 121    const char *pci_id;
 122
 123    *chip_id = -1;
 124
 125    udev = udev_new();
 126    device = udev_device_new_from_fd(udev, fd);
 127    if (!device)
 128       goto out;
 129
 130    parent = udev_device_get_parent(device);
 131    if (parent == NULL) {
 132       log_(_LOADER_WARNING, "MESA-LOADER: could not get parent device");
 133       goto out;
 134    }
 135
 136    pci_id = udev_device_get_property_value(parent, "PCI_ID");
 137    if (pci_id == NULL ||
 138        sscanf(pci_id, "%x:%x", vendor_id, chip_id) != 2) {
 139       log_(_LOADER_WARNING, "MESA-LOADER: malformed or no PCI ID");
 140       *chip_id = -1;
 141       goto out;
 142    }
 143
 144 out:
 145    if (device)
 146       udev_device_unref(device);
 147    if (udev)
 148       udev_unref(udev);
 149
 150    return (*chip_id >= 0);
 151 }
 152
 153 #elif defined(ANDROID) && !defined(__NOT_HAVE_DRM_H)
 154
 155 /* for i915 */
 156 #include <i915_drm.h>
 157 /* for radeon */
 158 #include <radeon_drm.h>
 159
 160 int
 161 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 162 {
 163    drmVersionPtr version;
 164
 165    *chip_id = -1;
 166
 167    version = drmGetVersion(fd);
 168    if (!version) {
 169       log_(_LOADER_WARNING, "MESA-LOADER: invalid drm fd");
 170       return FALSE;
 171    }
 172    if (!version->name) {
 173       log_(_LOADER_WARNING, "MESA-LOADER: unable to determine the driver name");
 174       drmFreeVersion(version);
 175       return FALSE;
 176    }
 177
 178    if (strcmp(version->name, "i915") == 0) {
 179       struct drm_i915_getparam gp;
 180       int ret;
 181
 182       *vendor_id = 0x8086;
 183
 184       memset(&gp, 0, sizeof(gp));
 185       gp.param = I915_PARAM_CHIPSET_ID;
 186       gp.value = chip_id;
 187       ret = drmCommandWriteRead(fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 188       if (ret) {
 189          log_(_LOADER_WARNING, "MESA-LOADER: failed to get param for i915");
 190          *chip_id = -1;
 191       }
 192    }
 193    else if (strcmp(version->name, "radeon") == 0) {
 194       struct drm_radeon_info info;
 195       int ret;
 196
 197       *vendor_id = 0x1002;
 198
 199       memset(&info, 0, sizeof(info));
 200       info.request = RADEON_INFO_DEVICE_ID;
 201       info.value = (unsigned long) chip_id;
 202       ret = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 203       if (ret) {
 204          log_(_LOADER_WARNING, "MESA-LOADER: failed to get info for radeon");
 205          *chip_id = -1;
 206       }
 207    }
 208    else if (strcmp(version->name, "nouveau") == 0) {
 209       *vendor_id = 0x10de;
 210       /* not used */
 211       *chip_id = 0;
 212    }
 213    else if (strcmp(version->name, "vmwgfx") == 0) {
 214       *vendor_id = 0x15ad;
 215       /* assume SVGA II */
 216       *chip_id = 0x0405;
 217    }
 218
 219    drmFreeVersion(version);
 220
 221    return (*chip_id >= 0);
 222 }
 223
 224 #else
 225
 226 int
 227 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 228 {
 229    return 0;
 230 }
 231
 232 #endif
 233
 234
 235 char *
 236 loader_get_device_name_for_fd(int fd)
 237 {
 238    char *device_name = NULL;
 239 #ifdef HAVE_LIBUDEV
 240    struct udev *udev;
 241    struct udev_device *device;
 242    const char *const_device_name;
 243
 244    udev = udev_new();
 245    device = udev_device_new_from_fd(udev, fd);
 246    if (device == NULL)
 247       return NULL;
 248
 249    const_device_name = udev_device_get_devnode(device);
 250    if (!const_device_name)
 251       goto out;
 252    device_name = strdup(const_device_name);
 253
 254 out:
 255    udev_device_unref(device);
 256    udev_unref(udev);
 257 #endif
 258    return device_name;
 259 }
 260
 261 char *
 262 loader_get_driver_for_fd(int fd, unsigned driver_types)
 263 {
 264    int vendor_id, chip_id, i, j;
 265    char *driver = NULL;
 266
 267    if (!driver_types)
 268       driver_types = _LOADER_GALLIUM | _LOADER_DRI;
 269
 270    if (!loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
 271
 272 #ifndef __NOT_HAVE_DRM_H
 273       /* fallback to drmGetVersion(): */
 274       drmVersionPtr version = drmGetVersion(fd);
 275
 276       if (!version) {
 277          log_(_LOADER_WARNING, "failed to get driver name for fd %d", fd);
 278          return NULL;
 279       }
 280
 281       driver = strndup(version->name, version->name_len);
 282       log_(_LOADER_INFO, "using driver %s for %d", driver, fd);
 283
 284       drmFreeVersion(version);
 285 #endif
 286
 287       return driver;
 288    }
 289
 290    for (i = 0; driver_map[i].driver; i++) {
 291       if (vendor_id != driver_map[i].vendor_id)
 292          continue;
 293
 294       if (!(driver_types & driver_map[i].driver_types))
 295          continue;
 296
 297       if (driver_map[i].num_chips_ids == -1) {
 298          driver = strdup(driver_map[i].driver);
 299          goto out;
 300       }
 301
 302       for (j = 0; j < driver_map[i].num_chips_ids; j++)
 303          if (driver_map[i].chip_ids[j] == chip_id) {
 304             driver = strdup(driver_map[i].driver);
 305             goto out;
 306          }
 307    }
 308
 309 out:
 310    log_(driver ? _LOADER_INFO : _LOADER_WARNING,
 311          "pci id for fd %d: %04x:%04x, driver %s",
 312          fd, vendor_id, chip_id, driver);
 313    return driver;
 314 }
 315
 316 void
 317 loader_set_logger(void (*logger)(int level, const char *fmt, ...))
 318 {
 319    log_ = logger;
 320 }