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 <assert.h>
  71 #include <dlfcn.h>
  72 #include "loader.h"
  73
  74 #ifndef __NOT_HAVE_DRM_H
  75 #include <xf86drm.h>
  76 #endif
  77
  78 #define __IS_LOADER
  79 #include "pci_ids/pci_id_driver_map.h"
  80
  81 static void default_logger(int level, const char *fmt, ...)
  82 {
  83    if (level >= _LOADER_WARNING) {
  84       va_list args;
  85       va_start(args, fmt);
  86       vfprintf(stderr, fmt, args);
  87       va_end(args);
  88       fprintf(stderr, "\n");
  89    }
  90 }
  91
  92 static void (*log_)(int level, const char *fmt, ...) = default_logger;
  93
  94 #ifdef HAVE_LIBUDEV
  95 #include <libudev.h>
  96
  97 static void *udev_handle = NULL;
  98
  99 static void *
 100 udev_dlopen_handle(void)
 101 {
 102    if (!udev_handle) {
 103       udev_handle = dlopen("libudev.so.1", RTLD_LOCAL | RTLD_LAZY);
 104    }
 105
 106    return udev_handle;
 107 }
 108
 109 static void *
 110 asserted_dlsym(void *dlopen_handle, const char *name)
 111 {
 112    void *result = dlsym(dlopen_handle, name);
 113    assert(result);
 114    return result;
 115 }
 116
 117 #define UDEV_SYMBOL(ret, name, args) \
 118    ret (*name) args = asserted_dlsym(udev_dlopen_handle(), #name);
 119
 120
 121 static inline struct udev_device *
 122 udev_device_new_from_fd(struct udev *udev, int fd)
 123 {
 124    struct udev_device *device;
 125    struct stat buf;
 126    UDEV_SYMBOL(struct udev_device *, udev_device_new_from_devnum,
 127                (struct udev *udev, char type, dev_t devnum));
 128
 129    if (fstat(fd, &buf) < 0) {
 130       log_(_LOADER_WARNING, "MESA-LOADER: failed to stat fd %d", fd);
 131       return NULL;
 132    }
 133
 134    device = udev_device_new_from_devnum(udev, 'c', buf.st_rdev);
 135    if (device == NULL) {
 136       log_(_LOADER_WARNING,
 137               "MESA-LOADER: could not create udev device for fd %d", fd);
 138       return NULL;
 139    }
 140
 141    return device;
 142 }
 143
 144 int
 145 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 146 {
 147    struct udev *udev = NULL;
 148    struct udev_device *device = NULL, *parent;
 149    const char *pci_id;
 150    UDEV_SYMBOL(struct udev *, udev_new, (void));
 151    UDEV_SYMBOL(struct udev_device *, udev_device_get_parent,
 152                (struct udev_device *));
 153    UDEV_SYMBOL(const char *, udev_device_get_property_value,
 154                (struct udev_device *, const char *));
 155    UDEV_SYMBOL(struct udev_device *, udev_device_unref,
 156                (struct udev_device *));
 157    UDEV_SYMBOL(struct udev *, udev_unref, (struct udev *));
 158
 159    *chip_id = -1;
 160
 161    udev = udev_new();
 162    device = udev_device_new_from_fd(udev, fd);
 163    if (!device)
 164       goto out;
 165
 166    parent = udev_device_get_parent(device);
 167    if (parent == NULL) {
 168       log_(_LOADER_WARNING, "MESA-LOADER: could not get parent device");
 169       goto out;
 170    }
 171
 172    pci_id = udev_device_get_property_value(parent, "PCI_ID");
 173    if (pci_id == NULL ||
 174        sscanf(pci_id, "%x:%x", vendor_id, chip_id) != 2) {
 175       log_(_LOADER_WARNING, "MESA-LOADER: malformed or no PCI ID");
 176       *chip_id = -1;
 177       goto out;
 178    }
 179
 180 out:
 181    if (device)
 182       udev_device_unref(device);
 183    if (udev)
 184       udev_unref(udev);
 185
 186    return (*chip_id >= 0);
 187 }
 188
 189 #elif defined(ANDROID) && !defined(__NOT_HAVE_DRM_H)
 190
 191 /* for i915 */
 192 #include <i915_drm.h>
 193 /* for radeon */
 194 #include <radeon_drm.h>
 195
 196 int
 197 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 198 {
 199    drmVersionPtr version;
 200
 201    *chip_id = -1;
 202
 203    version = drmGetVersion(fd);
 204    if (!version) {
 205       log_(_LOADER_WARNING, "MESA-LOADER: invalid drm fd");
 206       return FALSE;
 207    }
 208    if (!version->name) {
 209       log_(_LOADER_WARNING, "MESA-LOADER: unable to determine the driver name");
 210       drmFreeVersion(version);
 211       return FALSE;
 212    }
 213
 214    if (strcmp(version->name, "i915") == 0) {
 215       struct drm_i915_getparam gp;
 216       int ret;
 217
 218       *vendor_id = 0x8086;
 219
 220       memset(&gp, 0, sizeof(gp));
 221       gp.param = I915_PARAM_CHIPSET_ID;
 222       gp.value = chip_id;
 223       ret = drmCommandWriteRead(fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 224       if (ret) {
 225          log_(_LOADER_WARNING, "MESA-LOADER: failed to get param for i915");
 226          *chip_id = -1;
 227       }
 228    }
 229    else if (strcmp(version->name, "radeon") == 0) {
 230       struct drm_radeon_info info;
 231       int ret;
 232
 233       *vendor_id = 0x1002;
 234
 235       memset(&info, 0, sizeof(info));
 236       info.request = RADEON_INFO_DEVICE_ID;
 237       info.value = (unsigned long) chip_id;
 238       ret = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 239       if (ret) {
 240          log_(_LOADER_WARNING, "MESA-LOADER: failed to get info for radeon");
 241          *chip_id = -1;
 242       }
 243    }
 244    else if (strcmp(version->name, "nouveau") == 0) {
 245       *vendor_id = 0x10de;
 246       /* not used */
 247       *chip_id = 0;
 248    }
 249    else if (strcmp(version->name, "vmwgfx") == 0) {
 250       *vendor_id = 0x15ad;
 251       /* assume SVGA II */
 252       *chip_id = 0x0405;
 253    }
 254
 255    drmFreeVersion(version);
 256
 257    return (*chip_id >= 0);
 258 }
 259
 260 #else
 261
 262 int
 263 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 264 {
 265    return 0;
 266 }
 267
 268 #endif
 269
 270
 271 char *
 272 loader_get_device_name_for_fd(int fd)
 273 {
 274    char *device_name = NULL;
 275 #ifdef HAVE_LIBUDEV
 276    struct udev *udev;
 277    struct udev_device *device;
 278    const char *const_device_name;
 279    UDEV_SYMBOL(struct udev *, udev_new, (void));
 280    UDEV_SYMBOL(const char *, udev_device_get_devnode,
 281                (struct udev_device *));
 282    UDEV_SYMBOL(struct udev_device *, udev_device_unref,
 283                (struct udev_device *));
 284    UDEV_SYMBOL(struct udev *, udev_unref, (struct udev *));
 285
 286    udev = udev_new();
 287    device = udev_device_new_from_fd(udev, fd);
 288    if (device == NULL)
 289       return NULL;
 290
 291    const_device_name = udev_device_get_devnode(device);
 292    if (!const_device_name)
 293       goto out;
 294    device_name = strdup(const_device_name);
 295
 296 out:
 297    udev_device_unref(device);
 298    udev_unref(udev);
 299 #endif
 300    return device_name;
 301 }
 302
 303 char *
 304 loader_get_driver_for_fd(int fd, unsigned driver_types)
 305 {
 306    int vendor_id, chip_id, i, j;
 307    char *driver = NULL;
 308
 309    if (!driver_types)
 310       driver_types = _LOADER_GALLIUM | _LOADER_DRI;
 311
 312    if (!loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
 313
 314 #ifndef __NOT_HAVE_DRM_H
 315       /* fallback to drmGetVersion(): */
 316       drmVersionPtr version = drmGetVersion(fd);
 317
 318       if (!version) {
 319          log_(_LOADER_WARNING, "failed to get driver name for fd %d", fd);
 320          return NULL;
 321       }
 322
 323       driver = strndup(version->name, version->name_len);
 324       log_(_LOADER_INFO, "using driver %s for %d", driver, fd);
 325
 326       drmFreeVersion(version);
 327 #endif
 328
 329       return driver;
 330    }
 331
 332    for (i = 0; driver_map[i].driver; i++) {
 333       if (vendor_id != driver_map[i].vendor_id)
 334          continue;
 335
 336       if (!(driver_types & driver_map[i].driver_types))
 337          continue;
 338
 339       if (driver_map[i].num_chips_ids == -1) {
 340          driver = strdup(driver_map[i].driver);
 341          goto out;
 342       }
 343
 344       for (j = 0; j < driver_map[i].num_chips_ids; j++)
 345          if (driver_map[i].chip_ids[j] == chip_id) {
 346             driver = strdup(driver_map[i].driver);
 347             goto out;
 348          }
 349    }
 350
 351 out:
 352    log_(driver ? _LOADER_INFO : _LOADER_WARNING,
 353          "pci id for fd %d: %04x:%04x, driver %s",
 354          fd, vendor_id, chip_id, driver);
 355    return driver;
 356 }
 357
 358 void
 359 loader_set_logger(void (*logger)(int level, const char *fmt, ...))
 360 {
 361    log_ = logger;
 362 }