/*
* Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
- *
- * This code is derived from the following files.
- *
- * * src/glx/dri3_common.c
- * Copyright © 2013 Keith Packard
- *
- * * src/egl/drivers/dri2/common.c
- * * src/gbm/backends/dri/driver_name.c
- * Copyright © 2011 Intel Corporation
- *
- * Authors:
- * Kristian Høgsberg <krh@bitplanet.net>
- * Benjamin Franzke <benjaminfranzke@googlemail.com>
- *
- * * src/gallium/targets/egl-static/egl.c
- * Copyright (C) 2010-2011 LunarG Inc.
- *
- * Authors:
- * Chia-I Wu <olv@lunarg.com>
- *
- * * src/gallium/state_trackers/egl/drm/native_drm.c
- * Copyright (C) 2010 Chia-I Wu <olv@0xlab.org>
- *
- * * src/egl/drivers/dri2/platform_android.c
- *
- * Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
- * Copyright (C) 2010-2011 LunarG Inc.
- *
- * Based on platform_x11, which has
- *
- * Copyright © 2011 Intel Corporation
- *
- * * src/gallium/auxiliary/pipe-loader/pipe_loader_drm.c
- * Copyright 2011 Intel Corporation
- * Copyright 2012 Francisco Jerez
- * All Rights Reserved.
- *
- * Authors:
- * Kristian Høgsberg <krh@bitplanet.net>
- * Benjamin Franzke <benjaminfranzke@googlemail.com>
+ * Copyright (C) 2014-2016 Emil Velikov <emil.l.velikov@gmail.com>
+ * Copyright (C) 2016 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* Rob Clark <robclark@freedesktop.org>
*/
+#include <dlfcn.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <stdarg.h>
#include <stdio.h>
+#include <stdbool.h>
#include <string.h>
-#ifdef HAVE_LIBUDEV
-#include <assert.h>
-#include <dlfcn.h>
#include <unistd.h>
#include <stdlib.h>
-#ifdef USE_DRICONF
-#include "xmlconfig.h"
-#include "xmlpool.h"
+#include <limits.h>
+#include <sys/param.h>
+#ifdef MAJOR_IN_MKDEV
+#include <sys/mkdev.h>
#endif
+#ifdef MAJOR_IN_SYSMACROS
+#include <sys/sysmacros.h>
#endif
-#ifdef HAVE_SYSFS
-#include <sys/types.h>
-#endif
+#include <GL/gl.h>
+#include <GL/internal/dri_interface.h>
#include "loader.h"
-#ifndef __NOT_HAVE_DRM_H
+#ifdef HAVE_LIBDRM
#include <xf86drm.h>
+#ifdef USE_DRICONF
+#include "util/xmlconfig.h"
+#include "util/xmlpool.h"
#endif
+#endif
+
+#include "util/macros.h"
#define __IS_LOADER
#include "pci_id_driver_map.h"
+/* For systems like Hurd */
+#ifndef PATH_MAX
+#define PATH_MAX 4096
+#endif
+
static void default_logger(int level, const char *fmt, ...)
{
if (level <= _LOADER_WARNING) {
}
}
-static void (*log_)(int level, const char *fmt, ...) = default_logger;
+static loader_logger *log_ = default_logger;
int
loader_open_device(const char *device_name)
return fd;
}
-#ifdef HAVE_LIBUDEV
-#include <libudev.h>
-
-static void *udev_handle = NULL;
-
-static void *
-udev_dlopen_handle(void)
+static char *loader_get_kernel_driver_name(int fd)
{
- if (!udev_handle) {
- udev_handle = dlopen("libudev.so.1", RTLD_LOCAL | RTLD_LAZY);
-
- if (!udev_handle) {
- /* libudev.so.1 changed the return types of the two unref functions
- * from voids to pointers. We don't use those return values, and the
- * only ABI I've heard that cares about this kind of change (calling
- * a function with a void * return that actually only returns void)
- * might be ia64.
- */
- udev_handle = dlopen("libudev.so.0", RTLD_LOCAL | RTLD_LAZY);
-
- if (!udev_handle) {
- log_(_LOADER_WARNING, "Couldn't dlopen libudev.so.1 or "
- "libudev.so.0, driver detection may be broken.\n");
- }
- }
- }
+#if HAVE_LIBDRM
+ char *driver;
+ drmVersionPtr version = drmGetVersion(fd);
- return udev_handle;
-}
+ if (!version) {
+ log_(_LOADER_WARNING, "failed to get driver name for fd %d\n", fd);
+ return NULL;
+ }
-static int dlsym_failed = 0;
+ driver = strndup(version->name, version->name_len);
-static void *
-checked_dlsym(void *dlopen_handle, const char *name)
-{
- void *result = dlsym(dlopen_handle, name);
- if (!result)
- dlsym_failed = 1;
- return result;
+ drmFreeVersion(version);
+ return driver;
+#else
+ return NULL;
+#endif
}
-#define UDEV_SYMBOL(ret, name, args) \
- ret (*name) args = checked_dlsym(udev_dlopen_handle(), #name);
+#if defined(HAVE_LIBDRM)
+int
+loader_open_render_node(const char *name)
+{
+ drmDevicePtr *devices, device;
+ int err, render = -ENOENT, fd;
+ unsigned int num, i;
+ err = drmGetDevices2(0, NULL, 0);
+ if (err < 0)
+ return err;
-static inline struct udev_device *
-udev_device_new_from_fd(struct udev *udev, int fd)
-{
- struct udev_device *device;
- struct stat buf;
- UDEV_SYMBOL(struct udev_device *, udev_device_new_from_devnum,
- (struct udev *udev, char type, dev_t devnum));
+ num = err;
- if (dlsym_failed)
- return NULL;
+ devices = calloc(num, sizeof(*devices));
+ if (!devices)
+ return -ENOMEM;
- if (fstat(fd, &buf) < 0) {
- log_(_LOADER_WARNING, "MESA-LOADER: failed to stat fd %d\n", fd);
- return NULL;
+ err = drmGetDevices2(0, devices, num);
+ if (err < 0) {
+ render = err;
+ goto free;
}
- device = udev_device_new_from_devnum(udev, 'c', buf.st_rdev);
- if (device == NULL) {
- log_(_LOADER_WARNING,
- "MESA-LOADER: could not create udev device for fd %d\n", fd);
- return NULL;
+ for (i = 0; i < num; i++) {
+ device = devices[i];
+
+ if ((device->available_nodes & (1 << DRM_NODE_RENDER)) &&
+ (device->bustype == DRM_BUS_PLATFORM)) {
+ drmVersionPtr version;
+
+ fd = loader_open_device(device->nodes[DRM_NODE_RENDER]);
+ if (fd < 0)
+ continue;
+
+ version = drmGetVersion(fd);
+ if (!version) {
+ close(fd);
+ continue;
+ }
+
+ if (strcmp(version->name, name) != 0) {
+ drmFreeVersion(version);
+ close(fd);
+ continue;
+ }
+
+ drmFreeVersion(version);
+ render = fd;
+ break;
+ }
}
- return device;
+ drmFreeDevices(devices, num);
+
+free:
+ free(devices);
+ return render;
}
-static int
-libudev_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
+#ifdef USE_DRICONF
+static const char __driConfigOptionsLoader[] =
+DRI_CONF_BEGIN
+ DRI_CONF_SECTION_INITIALIZATION
+ DRI_CONF_DEVICE_ID_PATH_TAG()
+ DRI_CONF_DRI_DRIVER()
+ DRI_CONF_SECTION_END
+DRI_CONF_END;
+
+static char *loader_get_dri_config_driver(int fd)
{
- struct udev *udev = NULL;
- struct udev_device *device = NULL, *parent;
- const char *pci_id;
- UDEV_SYMBOL(struct udev *, udev_new, (void));
- UDEV_SYMBOL(struct udev_device *, udev_device_get_parent,
- (struct udev_device *));
- UDEV_SYMBOL(const char *, udev_device_get_property_value,
- (struct udev_device *, const char *));
- UDEV_SYMBOL(struct udev_device *, udev_device_unref,
- (struct udev_device *));
- UDEV_SYMBOL(struct udev *, udev_unref, (struct udev *));
-
- *chip_id = -1;
-
- if (dlsym_failed)
- return 0;
-
- udev = udev_new();
- device = udev_device_new_from_fd(udev, fd);
- if (!device)
- goto out;
-
- parent = udev_device_get_parent(device);
- if (parent == NULL) {
- log_(_LOADER_WARNING, "MESA-LOADER: could not get parent device\n");
- goto out;
+ driOptionCache defaultInitOptions;
+ driOptionCache userInitOptions;
+ char *dri_driver = NULL;
+ char *kernel_driver = loader_get_kernel_driver_name(fd);
+
+ driParseOptionInfo(&defaultInitOptions, __driConfigOptionsLoader);
+ driParseConfigFiles(&userInitOptions, &defaultInitOptions, 0,
+ "loader", kernel_driver, NULL, 0);
+ if (driCheckOption(&userInitOptions, "dri_driver", DRI_STRING)) {
+ char *opt = driQueryOptionstr(&userInitOptions, "dri_driver");
+ /* not an empty string */
+ if (*opt)
+ dri_driver = strdup(opt);
}
+ driDestroyOptionCache(&userInitOptions);
+ driDestroyOptionInfo(&defaultInitOptions);
- pci_id = udev_device_get_property_value(parent, "PCI_ID");
- if (pci_id == NULL) {
- log_(_LOADER_INFO, "MESA-LOADER: no PCI ID\n");
- *chip_id = -1;
- goto out;
- } else if (sscanf(pci_id, "%x:%x", vendor_id, chip_id) != 2) {
- log_(_LOADER_WARNING, "MESA-LOADER: malformed PCI ID\n");
- *chip_id = -1;
- goto out;
- }
+ free(kernel_driver);
+ return dri_driver;
+}
-out:
- if (device)
- udev_device_unref(device);
- if (udev)
- udev_unref(udev);
+static char *loader_get_dri_config_device_id(void)
+{
+ driOptionCache defaultInitOptions;
+ driOptionCache userInitOptions;
+ char *prime = NULL;
+
+ driParseOptionInfo(&defaultInitOptions, __driConfigOptionsLoader);
+ driParseConfigFiles(&userInitOptions, &defaultInitOptions, 0,
+ "loader", NULL, NULL, 0);
+ if (driCheckOption(&userInitOptions, "device_id", DRI_STRING))
+ prime = strdup(driQueryOptionstr(&userInitOptions, "device_id"));
+ driDestroyOptionCache(&userInitOptions);
+ driDestroyOptionInfo(&defaultInitOptions);
- return (*chip_id >= 0);
+ return prime;
}
+#endif
-static char *
-get_render_node_from_id_path_tag(struct udev *udev,
- char *id_path_tag,
- char another_tag)
+static char *drm_construct_id_path_tag(drmDevicePtr device)
{
- struct udev_device *device;
- struct udev_enumerate *e;
- struct udev_list_entry *entry;
- const char *path, *id_path_tag_tmp;
- char *path_res;
- char found = 0;
- UDEV_SYMBOL(struct udev_enumerate *, udev_enumerate_new,
- (struct udev *));
- UDEV_SYMBOL(int, udev_enumerate_add_match_subsystem,
- (struct udev_enumerate *, const char *));
- UDEV_SYMBOL(int, udev_enumerate_add_match_sysname,
- (struct udev_enumerate *, const char *));
- UDEV_SYMBOL(int, udev_enumerate_scan_devices,
- (struct udev_enumerate *));
- UDEV_SYMBOL(struct udev_list_entry *, udev_enumerate_get_list_entry,
- (struct udev_enumerate *));
- UDEV_SYMBOL(struct udev_list_entry *, udev_list_entry_get_next,
- (struct udev_list_entry *));
- UDEV_SYMBOL(const char *, udev_list_entry_get_name,
- (struct udev_list_entry *));
- UDEV_SYMBOL(struct udev_device *, udev_device_new_from_syspath,
- (struct udev *, const char *));
- UDEV_SYMBOL(const char *, udev_device_get_property_value,
- (struct udev_device *, const char *));
- UDEV_SYMBOL(const char *, udev_device_get_devnode,
- (struct udev_device *));
- UDEV_SYMBOL(struct udev_device *, udev_device_unref,
- (struct udev_device *));
-
- e = udev_enumerate_new(udev);
- udev_enumerate_add_match_subsystem(e, "drm");
- udev_enumerate_add_match_sysname(e, "render*");
-
- udev_enumerate_scan_devices(e);
- udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
- path = udev_list_entry_get_name(entry);
- device = udev_device_new_from_syspath(udev, path);
- if (!device)
- continue;
- id_path_tag_tmp = udev_device_get_property_value(device, "ID_PATH_TAG");
- if (id_path_tag_tmp) {
- if ((!another_tag && !strcmp(id_path_tag, id_path_tag_tmp)) ||
- (another_tag && strcmp(id_path_tag, id_path_tag_tmp))) {
- found = 1;
- break;
- }
+ char *tag = NULL;
+
+ if (device->bustype == DRM_BUS_PCI) {
+ if (asprintf(&tag, "pci-%04x_%02x_%02x_%1u",
+ device->businfo.pci->domain,
+ device->businfo.pci->bus,
+ device->businfo.pci->dev,
+ device->businfo.pci->func) < 0) {
+ return NULL;
}
- udev_device_unref(device);
- }
+ } else if (device->bustype == DRM_BUS_PLATFORM ||
+ device->bustype == DRM_BUS_HOST1X) {
+ char *fullname, *name, *address;
+
+ if (device->bustype == DRM_BUS_PLATFORM)
+ fullname = device->businfo.platform->fullname;
+ else
+ fullname = device->businfo.host1x->fullname;
- if (found) {
- path_res = strdup(udev_device_get_devnode(device));
- udev_device_unref(device);
- return path_res;
+ name = strrchr(fullname, '/');
+ if (!name)
+ name = strdup(fullname);
+ else
+ name = strdup(name + 1);
+
+ address = strchr(name, '@');
+ if (address) {
+ *address++ = '\0';
+
+ if (asprintf(&tag, "platform-%s_%s", address, name) < 0)
+ tag = NULL;
+ } else {
+ if (asprintf(&tag, "platform-%s", name) < 0)
+ tag = NULL;
+ }
+
+ free(name);
}
- return NULL;
+ return tag;
}
-static char *
-get_id_path_tag_from_fd(struct udev *udev, int fd)
+static bool drm_device_matches_tag(drmDevicePtr device, const char *prime_tag)
{
- struct udev_device *device;
- const char *id_path_tag_tmp;
- char *id_path_tag;
- UDEV_SYMBOL(const char *, udev_device_get_property_value,
- (struct udev_device *, const char *));
- UDEV_SYMBOL(struct udev_device *, udev_device_unref,
- (struct udev_device *));
-
- device = udev_device_new_from_fd(udev, fd);
- if (!device)
- return NULL;
+ char *tag = drm_construct_id_path_tag(device);
+ int ret;
- id_path_tag_tmp = udev_device_get_property_value(device, "ID_PATH_TAG");
- if (!id_path_tag_tmp)
- return NULL;
+ if (tag == NULL)
+ return false;
- id_path_tag = strdup(id_path_tag_tmp);
+ ret = strcmp(tag, prime_tag);
- udev_device_unref(device);
- return id_path_tag;
+ free(tag);
+ return ret == 0;
}
-#ifdef USE_DRICONF
-const char __driConfigOptionsLoader[] =
-DRI_CONF_BEGIN
- DRI_CONF_SECTION_INITIALIZATION
- DRI_CONF_DEVICE_ID_PATH_TAG()
- DRI_CONF_SECTION_END
-DRI_CONF_END;
-#endif
+static char *drm_get_id_path_tag_for_fd(int fd)
+{
+ drmDevicePtr device;
+ char *tag;
+
+ if (drmGetDevice2(fd, 0, &device) != 0)
+ return NULL;
-int loader_get_user_preferred_fd(int default_fd, int *different_device)
+ tag = drm_construct_id_path_tag(device);
+ drmFreeDevice(&device);
+ return tag;
+}
+
+int loader_get_user_preferred_fd(int default_fd, bool *different_device)
{
- struct udev *udev;
-#ifdef USE_DRICONF
- driOptionCache defaultInitOptions;
- driOptionCache userInitOptions;
-#endif
+/* Arbitrary "maximum" value of drm devices. */
+#define MAX_DRM_DEVICES 32
const char *dri_prime = getenv("DRI_PRIME");
- char *prime = NULL;
- int is_different_device = 0, fd = default_fd;
- char *default_device_id_path_tag;
- char *device_name = NULL;
- char another_tag = 0;
- UDEV_SYMBOL(struct udev *, udev_new, (void));
- UDEV_SYMBOL(struct udev *, udev_unref, (struct udev *));
+ char *default_tag, *prime = NULL;
+ drmDevicePtr devices[MAX_DRM_DEVICES];
+ int i, num_devices, fd;
+ bool found = false;
if (dri_prime)
prime = strdup(dri_prime);
#ifdef USE_DRICONF
- else {
- driParseOptionInfo(&defaultInitOptions, __driConfigOptionsLoader);
- driParseConfigFiles(&userInitOptions, &defaultInitOptions, 0, "loader");
- if (driCheckOption(&userInitOptions, "device_id", DRI_STRING))
- prime = strdup(driQueryOptionstr(&userInitOptions, "device_id"));
- driDestroyOptionCache(&userInitOptions);
- driDestroyOptionInfo(&defaultInitOptions);
- }
+ else
+ prime = loader_get_dri_config_device_id();
#endif
if (prime == NULL) {
- *different_device = 0;
+ *different_device = false;
return default_fd;
}
- udev = udev_new();
- if (!udev)
- goto prime_clean;
+ default_tag = drm_get_id_path_tag_for_fd(default_fd);
+ if (default_tag == NULL)
+ goto err;
- default_device_id_path_tag = get_id_path_tag_from_fd(udev, default_fd);
- if (!default_device_id_path_tag)
- goto udev_clean;
+ num_devices = drmGetDevices2(0, devices, MAX_DRM_DEVICES);
+ if (num_devices < 0)
+ goto err;
- is_different_device = 1;
/* two format are supported:
* "1": choose any other card than the card used by default.
* id_path_tag: (for example "pci-0000_02_00_0") choose the card
* with this id_path_tag.
*/
if (!strcmp(prime,"1")) {
- free(prime);
- prime = strdup(default_device_id_path_tag);
- /* request a card with a different card than the default card */
- another_tag = 1;
- } else if (!strcmp(default_device_id_path_tag, prime))
- /* we are to get a new fd (render-node) of the same device */
- is_different_device = 0;
-
- device_name = get_render_node_from_id_path_tag(udev,
- prime,
- another_tag);
- if (device_name == NULL) {
- is_different_device = 0;
- goto default_device_clean;
- }
-
- fd = loader_open_device(device_name);
- if (fd >= 0) {
- close(default_fd);
+ /* Hmm... detection for 2-7 seems to be broken. Oh well ...
+ * Pick the first render device that is not our own.
+ */
+ for (i = 0; i < num_devices; i++) {
+ if (devices[i]->available_nodes & 1 << DRM_NODE_RENDER &&
+ !drm_device_matches_tag(devices[i], default_tag)) {
+
+ found = true;
+ break;
+ }
+ }
} else {
- fd = default_fd;
- is_different_device = 0;
+ for (i = 0; i < num_devices; i++) {
+ if (devices[i]->available_nodes & 1 << DRM_NODE_RENDER &&
+ drm_device_matches_tag(devices[i], prime)) {
+
+ found = true;
+ break;
+ }
+ }
}
- free(device_name);
- default_device_clean:
- free(default_device_id_path_tag);
- udev_clean:
- udev_unref(udev);
- prime_clean:
- free(prime);
+ if (!found) {
+ drmFreeDevices(devices, num_devices);
+ goto err;
+ }
- *different_device = is_different_device;
- return fd;
-}
-#else
-int loader_get_user_preferred_fd(int default_fd, int *different_device)
-{
- *different_device = 0;
- return default_fd;
-}
-#endif
+ fd = loader_open_device(devices[i]->nodes[DRM_NODE_RENDER]);
+ drmFreeDevices(devices, num_devices);
+ if (fd < 0)
+ goto err;
-#if defined(HAVE_SYSFS)
-static int
-dev_node_from_fd(int fd, unsigned int *maj, unsigned int *min)
-{
- struct stat buf;
+ close(default_fd);
- if (fstat(fd, &buf) < 0) {
- log_(_LOADER_WARNING, "MESA-LOADER: failed to stat fd %d\n", fd);
- return -1;
- }
+ *different_device = !!strcmp(default_tag, prime);
- if (!S_ISCHR(buf.st_mode)) {
- log_(_LOADER_WARNING, "MESA-LOADER: fd %d not a character device\n", fd);
- return -1;
- }
+ free(default_tag);
+ free(prime);
+ return fd;
- *maj = major(buf.st_rdev);
- *min = minor(buf.st_rdev);
+ err:
+ *different_device = false;
- return 0;
+ free(default_tag);
+ free(prime);
+ return default_fd;
}
-
-static int
-sysfs_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
+#else
+int
+loader_open_render_node(const char *name)
{
- unsigned int maj, min;
- FILE *f;
- char buf[0x40];
-
- if (dev_node_from_fd(fd, &maj, &min) < 0) {
- *chip_id = -1;
- return 0;
- }
+ return -1;
+}
- snprintf(buf, sizeof(buf), "/sys/dev/char/%d:%d/device/vendor", maj, min);
- if (!(f = fopen(buf, "r"))) {
- *chip_id = -1;
- return 0;
- }
- if (fscanf(f, "%x", vendor_id) != 1) {
- *chip_id = -1;
- fclose(f);
- return 0;
- }
- fclose(f);
- snprintf(buf, sizeof(buf), "/sys/dev/char/%d:%d/device/device", maj, min);
- if (!(f = fopen(buf, "r"))) {
- *chip_id = -1;
- return 0;
- }
- if (fscanf(f, "%x", chip_id) != 1) {
- *chip_id = -1;
- fclose(f);
- return 0;
- }
- fclose(f);
- return 1;
+int loader_get_user_preferred_fd(int default_fd, bool *different_device)
+{
+ *different_device = false;
+ return default_fd;
}
#endif
-#if !defined(__NOT_HAVE_DRM_H)
-/* for i915 */
-#include <i915_drm.h>
-/* for radeon */
-#include <radeon_drm.h>
+#if defined(HAVE_LIBDRM)
-static int
+static bool
drm_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
{
- drmVersionPtr version;
-
- *chip_id = -1;
-
- version = drmGetVersion(fd);
- if (!version) {
- log_(_LOADER_WARNING, "MESA-LOADER: invalid drm fd\n");
- return 0;
- }
- if (!version->name) {
- log_(_LOADER_WARNING, "MESA-LOADER: unable to determine the driver name\n");
- drmFreeVersion(version);
- return 0;
- }
-
- if (strcmp(version->name, "i915") == 0) {
- struct drm_i915_getparam gp;
- int ret;
-
- *vendor_id = 0x8086;
-
- memset(&gp, 0, sizeof(gp));
- gp.param = I915_PARAM_CHIPSET_ID;
- gp.value = chip_id;
- ret = drmCommandWriteRead(fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
- if (ret) {
- log_(_LOADER_WARNING, "MESA-LOADER: failed to get param for i915\n");
- *chip_id = -1;
+ drmDevicePtr device;
+ bool ret;
+
+ if (drmGetDevice2(fd, 0, &device) == 0) {
+ if (device->bustype == DRM_BUS_PCI) {
+ *vendor_id = device->deviceinfo.pci->vendor_id;
+ *chip_id = device->deviceinfo.pci->device_id;
+ ret = true;
}
- }
- else if (strcmp(version->name, "radeon") == 0) {
- struct drm_radeon_info info;
- int ret;
-
- *vendor_id = 0x1002;
-
- memset(&info, 0, sizeof(info));
- info.request = RADEON_INFO_DEVICE_ID;
- info.value = (unsigned long) chip_id;
- ret = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
- if (ret) {
- log_(_LOADER_WARNING, "MESA-LOADER: failed to get info for radeon\n");
- *chip_id = -1;
+ else {
+ log_(_LOADER_DEBUG, "MESA-LOADER: device is not located on the PCI bus\n");
+ ret = false;
}
+ drmFreeDevice(&device);
}
- else if (strcmp(version->name, "nouveau") == 0) {
- *vendor_id = 0x10de;
- /* not used */
- *chip_id = 0;
- }
- else if (strcmp(version->name, "vmwgfx") == 0) {
- *vendor_id = 0x15ad;
- /* assume SVGA II */
- *chip_id = 0x0405;
+ else {
+ log_(_LOADER_WARNING, "MESA-LOADER: failed to retrieve device information\n");
+ ret = false;
}
- drmFreeVersion(version);
-
- return (*chip_id >= 0);
+ return ret;
}
#endif
-int
+bool
loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
{
-#if HAVE_LIBUDEV
- if (libudev_get_pci_id_for_fd(fd, vendor_id, chip_id))
- return 1;
+#if HAVE_LIBDRM
+ return drm_get_pci_id_for_fd(fd, vendor_id, chip_id);
#endif
-#if HAVE_SYSFS
- if (sysfs_get_pci_id_for_fd(fd, vendor_id, chip_id))
- return 1;
-#endif
-#if !defined(__NOT_HAVE_DRM_H)
- if (drm_get_pci_id_for_fd(fd, vendor_id, chip_id))
- return 1;
-#endif
- return 0;
+ return false;
}
-
-#ifdef HAVE_LIBUDEV
-static char *
-libudev_get_device_name_for_fd(int fd)
-{
- char *device_name = NULL;
- struct udev *udev;
- struct udev_device *device;
- const char *const_device_name;
- UDEV_SYMBOL(struct udev *, udev_new, (void));
- UDEV_SYMBOL(const char *, udev_device_get_devnode,
- (struct udev_device *));
- UDEV_SYMBOL(struct udev_device *, udev_device_unref,
- (struct udev_device *));
- UDEV_SYMBOL(struct udev *, udev_unref, (struct udev *));
-
- if (dlsym_failed)
- return NULL;
-
- udev = udev_new();
- device = udev_device_new_from_fd(udev, fd);
- if (device == NULL)
- return NULL;
-
- const_device_name = udev_device_get_devnode(device);
- if (!const_device_name)
- goto out;
- device_name = strdup(const_device_name);
-
-out:
- udev_device_unref(device);
- udev_unref(udev);
- return device_name;
-}
-#endif
-
-
-#if HAVE_SYSFS
-static char *
-sysfs_get_device_name_for_fd(int fd)
-{
- char *device_name = NULL;
- unsigned int maj, min;
- FILE *f;
- char buf[0x40];
- static const char match[9] = "\0DEVNAME=";
- int expected = 1;
-
- if (dev_node_from_fd(fd, &maj, &min) < 0)
- return NULL;
-
- snprintf(buf, sizeof(buf), "/sys/dev/char/%d:%d/uevent", maj, min);
- if (!(f = fopen(buf, "r")))
- return NULL;
-
- while (expected < sizeof(match)) {
- int c = getc(f);
-
- if (c == EOF) {
- fclose(f);
- return NULL;
- } else if (c == match[expected] )
- expected++;
- else
- expected = 0;
- }
-
- strcpy(buf, "/dev/");
- if (fgets(buf + 5, sizeof(buf) - 5, f))
- device_name = strdup(buf);
-
- fclose(f);
- return device_name;
-}
-#endif
-
-
char *
loader_get_device_name_for_fd(int fd)
{
char *result = NULL;
-#if HAVE_LIBUDEV
- if ((result = libudev_get_device_name_for_fd(fd)))
- return result;
-#endif
-#if HAVE_SYSFS
- if ((result = sysfs_get_device_name_for_fd(fd)))
- return result;
+#if HAVE_LIBDRM
+ result = drmGetDeviceNameFromFd2(fd);
#endif
+
return result;
}
char *
-loader_get_driver_for_fd(int fd, unsigned driver_types)
+loader_get_driver_for_fd(int fd)
{
int vendor_id, chip_id, i, j;
char *driver = NULL;
- if (!driver_types)
- driver_types = _LOADER_GALLIUM | _LOADER_DRI;
-
- if (!loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
-
-#ifndef __NOT_HAVE_DRM_H
- /* fallback to drmGetVersion(): */
- drmVersionPtr version = drmGetVersion(fd);
-
- if (!version) {
- log_(_LOADER_WARNING, "failed to get driver name for fd %d\n", fd);
- return NULL;
- }
-
- driver = strndup(version->name, version->name_len);
- log_(_LOADER_INFO, "using driver %s for %d\n", driver, fd);
+ /* Allow an environment variable to force choosing a different driver
+ * binary. If that driver binary can't survive on this FD, that's the
+ * user's problem, but this allows vc4 simulator to run on an i965 host,
+ * and may be useful for some touch testing of i915 on an i965 host.
+ */
+ if (geteuid() == getuid()) {
+ driver = getenv("MESA_LOADER_DRIVER_OVERRIDE");
+ if (driver)
+ return strdup(driver);
+ }
- drmFreeVersion(version);
+#if defined(HAVE_LIBDRM) && defined(USE_DRICONF)
+ driver = loader_get_dri_config_driver(fd);
+ if (driver)
+ return driver;
#endif
+ if (!loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
+ driver = loader_get_kernel_driver_name(fd);
+ if (driver)
+ log_(_LOADER_INFO, "using driver %s for %d\n", driver, fd);
return driver;
}
- for (i = 0; driver_map[i].driver; i++) {
+ for (i = 0; i < ARRAY_SIZE(driver_map); i++) {
if (vendor_id != driver_map[i].vendor_id)
continue;
- if (!(driver_types & driver_map[i].driver_types))
- continue;
-
if (driver_map[i].predicate && !driver_map[i].predicate(fd))
continue;
}
void
-loader_set_logger(void (*logger)(int level, const char *fmt, ...))
+loader_set_logger(loader_logger *logger)
{
log_ = logger;
}
+
+char *
+loader_get_extensions_name(const char *driver_name)
+{
+ char *name = NULL;
+
+ if (asprintf(&name, "%s_%s", __DRI_DRIVER_GET_EXTENSIONS, driver_name) < 0)
+ return NULL;
+
+ const size_t len = strlen(name);
+ for (size_t i = 0; i < len; i++) {
+ if (name[i] == '-')
+ name[i] = '_';
+ }
+
+ return name;
+}
+
+/**
+ * Opens a DRI driver using its driver name, returning the __DRIextension
+ * entrypoints.
+ *
+ * \param driverName - a name like "i965", "radeon", "nouveau", etc.
+ * \param out_driver - Address where the dlopen() return value will be stored.
+ * \param search_path_vars - NULL-terminated list of env vars that can be used
+ * to override the DEFAULT_DRIVER_DIR search path.
+ */
+const struct __DRIextensionRec **
+loader_open_driver(const char *driver_name,
+ void **out_driver_handle,
+ const char **search_path_vars)
+{
+ char path[PATH_MAX], *search_paths, *next, *end;
+ char *get_extensions_name;
+ const struct __DRIextensionRec **extensions = NULL;
+ const struct __DRIextensionRec **(*get_extensions)(void);
+
+ search_paths = NULL;
+ if (geteuid() == getuid() && search_path_vars) {
+ for (int i = 0; search_path_vars[i] != NULL; i++) {
+ search_paths = getenv(search_path_vars[i]);
+ if (search_paths)
+ break;
+ }
+ }
+ if (search_paths == NULL)
+ search_paths = DEFAULT_DRIVER_DIR;
+
+ void *driver = NULL;
+ end = search_paths + strlen(search_paths);
+ for (char *p = search_paths; p < end; p = next + 1) {
+ int len;
+ next = strchr(p, ':');
+ if (next == NULL)
+ next = end;
+
+ len = next - p;
+#if USE_ELF_TLS
+ snprintf(path, sizeof(path), "%.*s/tls/%s_dri.so", len, p, driver_name);
+ driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
+#endif
+ if (driver == NULL) {
+ snprintf(path, sizeof(path), "%.*s/%s_dri.so", len, p, driver_name);
+ driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
+ if (driver == NULL)
+ log_(_LOADER_DEBUG, "MESA-LOADER: failed to open %s: %s\n",
+ path, dlerror());
+ }
+ /* not need continue to loop all paths once the driver is found */
+ if (driver != NULL)
+ break;
+ }
+
+ if (driver == NULL) {
+ log_(_LOADER_WARNING, "MESA-LOADER: failed to open %s (search paths %s)\n",
+ driver_name, search_paths);
+ *out_driver_handle = NULL;
+ return NULL;
+ }
+
+ log_(_LOADER_DEBUG, "MESA-LOADER: dlopen(%s)\n", path);
+
+ get_extensions_name = loader_get_extensions_name(driver_name);
+ if (get_extensions_name) {
+ get_extensions = dlsym(driver, get_extensions_name);
+ if (get_extensions) {
+ extensions = get_extensions();
+ } else {
+ log_(_LOADER_DEBUG, "MESA-LOADER: driver does not expose %s(): %s\n",
+ get_extensions_name, dlerror());
+ }
+ free(get_extensions_name);
+ }
+
+ if (!extensions)
+ extensions = dlsym(driver, __DRI_DRIVER_EXTENSIONS);
+ if (extensions == NULL) {
+ log_(_LOADER_WARNING,
+ "MESA-LOADER: driver exports no extensions (%s)\n", dlerror());
+ dlclose(driver);
+ }
+
+ *out_driver_handle = driver;
+ return extensions;
+}
projects / mesa.git / blobdiff