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 #ifdef HAVE_LIBUDEV
  71 #include <assert.h>
  72 #include <dlfcn.h>
  73 #endif
  74 #include "loader.h"
  75
  76 #ifndef __NOT_HAVE_DRM_H
  77 #include <xf86drm.h>
  78 #endif
  79
  80 #define __IS_LOADER
  81 #include "pci_ids/pci_id_driver_map.h"
  82
  83 static void default_logger(int level, const char *fmt, ...)
  84 {
  85    if (level >= _LOADER_WARNING) {
  86       va_list args;
  87       va_start(args, fmt);
  88       vfprintf(stderr, fmt, args);
  89       va_end(args);
  90    }
  91 }
  92
  93 static void (*log_)(int level, const char *fmt, ...) = default_logger;
  94
  95 #ifdef HAVE_LIBUDEV
  96 #include <libudev.h>
  97
  98 static void *udev_handle = NULL;
  99
 100 static void *
 101 udev_dlopen_handle(void)
 102 {
 103    if (!udev_handle) {
 104       udev_handle = dlopen("libudev.so.1", RTLD_LOCAL | RTLD_LAZY);
 105    }
 106
 107    return udev_handle;
 108 }
 109
 110 static void *
 111 asserted_dlsym(void *dlopen_handle, const char *name)
 112 {
 113    void *result = dlsym(dlopen_handle, name);
 114    assert(result);
 115    return result;
 116 }
 117
 118 #define UDEV_SYMBOL(ret, name, args) \
 119    ret (*name) args = asserted_dlsym(udev_dlopen_handle(), #name);
 120
 121
 122 static inline struct udev_device *
 123 udev_device_new_from_fd(struct udev *udev, int fd)
 124 {
 125    struct udev_device *device;
 126    struct stat buf;
 127    UDEV_SYMBOL(struct udev_device *, udev_device_new_from_devnum,
 128                (struct udev *udev, char type, dev_t devnum));
 129
 130    if (fstat(fd, &buf) < 0) {
 131       log_(_LOADER_WARNING, "MESA-LOADER: failed to stat fd %d\n", fd);
 132       return NULL;
 133    }
 134
 135    device = udev_device_new_from_devnum(udev, 'c', buf.st_rdev);
 136    if (device == NULL) {
 137       log_(_LOADER_WARNING,
 138               "MESA-LOADER: could not create udev device for fd %d\n", fd);
 139       return NULL;
 140    }
 141
 142    return device;
 143 }
 144
 145 int
 146 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 147 {
 148    struct udev *udev = NULL;
 149    struct udev_device *device = NULL, *parent;
 150    const char *pci_id;
 151    UDEV_SYMBOL(struct udev *, udev_new, (void));
 152    UDEV_SYMBOL(struct udev_device *, udev_device_get_parent,
 153                (struct udev_device *));
 154    UDEV_SYMBOL(const char *, udev_device_get_property_value,
 155                (struct udev_device *, const char *));
 156    UDEV_SYMBOL(struct udev_device *, udev_device_unref,
 157                (struct udev_device *));
 158    UDEV_SYMBOL(struct udev *, udev_unref, (struct udev *));
 159
 160    *chip_id = -1;
 161
 162    udev = udev_new();
 163    device = udev_device_new_from_fd(udev, fd);
 164    if (!device)
 165       goto out;
 166
 167    parent = udev_device_get_parent(device);
 168    if (parent == NULL) {
 169       log_(_LOADER_WARNING, "MESA-LOADER: could not get parent device\n");
 170       goto out;
 171    }
 172
 173    pci_id = udev_device_get_property_value(parent, "PCI_ID");
 174    if (pci_id == NULL ||
 175        sscanf(pci_id, "%x:%x", vendor_id, chip_id) != 2) {
 176       log_(_LOADER_WARNING, "MESA-LOADER: malformed or no PCI ID\n");
 177       *chip_id = -1;
 178       goto out;
 179    }
 180
 181 out:
 182    if (device)
 183       udev_device_unref(device);
 184    if (udev)
 185       udev_unref(udev);
 186
 187    return (*chip_id >= 0);
 188 }
 189
 190 #elif defined(ANDROID) && !defined(__NOT_HAVE_DRM_H)
 191
 192 /* for i915 */
 193 #include <i915_drm.h>
 194 /* for radeon */
 195 #include <radeon_drm.h>
 196
 197 int
 198 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 199 {
 200    drmVersionPtr version;
 201
 202    *chip_id = -1;
 203
 204    version = drmGetVersion(fd);
 205    if (!version) {
 206       log_(_LOADER_WARNING, "MESA-LOADER: invalid drm fd\n");
 207       return FALSE;
 208    }
 209    if (!version->name) {
 210       log_(_LOADER_WARNING, "MESA-LOADER: unable to determine the driver name\n");
 211       drmFreeVersion(version);
 212       return FALSE;
 213    }
 214
 215    if (strcmp(version->name, "i915") == 0) {
 216       struct drm_i915_getparam gp;
 217       int ret;
 218
 219       *vendor_id = 0x8086;
 220
 221       memset(&gp, 0, sizeof(gp));
 222       gp.param = I915_PARAM_CHIPSET_ID;
 223       gp.value = chip_id;
 224       ret = drmCommandWriteRead(fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 225       if (ret) {
 226          log_(_LOADER_WARNING, "MESA-LOADER: failed to get param for i915\n");
 227          *chip_id = -1;
 228       }
 229    }
 230    else if (strcmp(version->name, "radeon") == 0) {
 231       struct drm_radeon_info info;
 232       int ret;
 233
 234       *vendor_id = 0x1002;
 235
 236       memset(&info, 0, sizeof(info));
 237       info.request = RADEON_INFO_DEVICE_ID;
 238       info.value = (unsigned long) chip_id;
 239       ret = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 240       if (ret) {
 241          log_(_LOADER_WARNING, "MESA-LOADER: failed to get info for radeon\n");
 242          *chip_id = -1;
 243       }
 244    }
 245    else if (strcmp(version->name, "nouveau") == 0) {
 246       *vendor_id = 0x10de;
 247       /* not used */
 248       *chip_id = 0;
 249    }
 250    else if (strcmp(version->name, "vmwgfx") == 0) {
 251       *vendor_id = 0x15ad;
 252       /* assume SVGA II */
 253       *chip_id = 0x0405;
 254    }
 255
 256    drmFreeVersion(version);
 257
 258    return (*chip_id >= 0);
 259 }
 260
 261 #else
 262
 263 int
 264 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
 265 {
 266    return 0;
 267 }
 268
 269 #endif
 270
 271
 272 char *
 273 loader_get_device_name_for_fd(int fd)
 274 {
 275    char *device_name = NULL;
 276 #ifdef HAVE_LIBUDEV
 277    struct udev *udev;
 278    struct udev_device *device;
 279    const char *const_device_name;
 280    UDEV_SYMBOL(struct udev *, udev_new, (void));
 281    UDEV_SYMBOL(const char *, udev_device_get_devnode,
 282                (struct udev_device *));
 283    UDEV_SYMBOL(struct udev_device *, udev_device_unref,
 284                (struct udev_device *));
 285    UDEV_SYMBOL(struct udev *, udev_unref, (struct udev *));
 286
 287    udev = udev_new();
 288    device = udev_device_new_from_fd(udev, fd);
 289    if (device == NULL)
 290       return NULL;
 291
 292    const_device_name = udev_device_get_devnode(device);
 293    if (!const_device_name)
 294       goto out;
 295    device_name = strdup(const_device_name);
 296
 297 out:
 298    udev_device_unref(device);
 299    udev_unref(udev);
 300 #endif
 301    return device_name;
 302 }
 303
 304 char *
 305 loader_get_driver_for_fd(int fd, unsigned driver_types)
 306 {
 307    int vendor_id, chip_id, i, j;
 308    char *driver = NULL;
 309
 310    if (!driver_types)
 311       driver_types = _LOADER_GALLIUM | _LOADER_DRI;
 312
 313    if (!loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
 314
 315 #ifndef __NOT_HAVE_DRM_H
 316       /* fallback to drmGetVersion(): */
 317       drmVersionPtr version = drmGetVersion(fd);
 318
 319       if (!version) {
 320          log_(_LOADER_WARNING, "failed to get driver name for fd %d\n", fd);
 321          return NULL;
 322       }
 323
 324       driver = strndup(version->name, version->name_len);
 325       log_(_LOADER_INFO, "using driver %s for %d\n", driver, fd);
 326
 327       drmFreeVersion(version);
 328 #endif
 329
 330       return driver;
 331    }
 332
 333    for (i = 0; driver_map[i].driver; i++) {
 334       if (vendor_id != driver_map[i].vendor_id)
 335          continue;
 336
 337       if (!(driver_types & driver_map[i].driver_types))
 338          continue;
 339
 340       if (driver_map[i].num_chips_ids == -1) {
 341          driver = strdup(driver_map[i].driver);
 342          goto out;
 343       }
 344
 345       for (j = 0; j < driver_map[i].num_chips_ids; j++)
 346          if (driver_map[i].chip_ids[j] == chip_id) {
 347             driver = strdup(driver_map[i].driver);
 348             goto out;
 349          }
 350    }
 351
 352 out:
 353    log_(driver ? _LOADER_INFO : _LOADER_WARNING,
 354          "pci id for fd %d: %04x:%04x, driver %s\n",
 355          fd, vendor_id, chip_id, driver);
 356    return driver;
 357 }
 358
 359 void
 360 loader_set_logger(void (*logger)(int level, const char *fmt, ...))
 361 {
 362    log_ = logger;
 363 }