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Diffstat (limited to 'mesalib/src/loader/loader.c')
-rw-r--r--mesalib/src/loader/loader.c86
1 files changed, 72 insertions, 14 deletions
diff --git a/mesalib/src/loader/loader.c b/mesalib/src/loader/loader.c
index a5bd7692e..811f8a257 100644
--- a/mesalib/src/loader/loader.c
+++ b/mesalib/src/loader/loader.c
@@ -67,6 +67,10 @@
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
+#ifdef HAVE_LIBUDEV
+#include <assert.h>
+#include <dlfcn.h>
+#endif
#include "loader.h"
#ifndef __NOT_HAVE_DRM_H
@@ -78,12 +82,11 @@
static void default_logger(int level, const char *fmt, ...)
{
- if (level >= _LOADER_WARNING) {
+ if (level <= _LOADER_WARNING) {
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
- fprintf(stderr, "\n");
}
}
@@ -92,21 +95,62 @@ static void (*log_)(int level, const char *fmt, ...) = default_logger;
#ifdef HAVE_LIBUDEV
#include <libudev.h>
+static void *udev_handle = NULL;
+
+static void *
+udev_dlopen_handle(void)
+{
+ 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_FATAL, "Couldn't dlopen libudev.so.1 or libudev.so.0, "
+ "driver detection may be broken.\n");
+ }
+ }
+ }
+
+ return udev_handle;
+}
+
+static void *
+asserted_dlsym(void *dlopen_handle, const char *name)
+{
+ void *result = dlsym(dlopen_handle, name);
+ assert(result);
+ return result;
+}
+
+#define UDEV_SYMBOL(ret, name, args) \
+ ret (*name) args = asserted_dlsym(udev_dlopen_handle(), #name);
+
+
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));
if (fstat(fd, &buf) < 0) {
- log_(_LOADER_WARNING, "MESA-LOADER: failed to stat fd %d", fd);
+ log_(_LOADER_WARNING, "MESA-LOADER: failed to stat fd %d\n", fd);
return NULL;
}
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", fd);
+ "MESA-LOADER: could not create udev device for fd %d\n", fd);
return NULL;
}
@@ -119,6 +163,14 @@ loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
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;
@@ -129,14 +181,14 @@ loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
parent = udev_device_get_parent(device);
if (parent == NULL) {
- log_(_LOADER_WARNING, "MESA-LOADER: could not get parent device");
+ log_(_LOADER_WARNING, "MESA-LOADER: could not get parent device\n");
goto out;
}
pci_id = udev_device_get_property_value(parent, "PCI_ID");
if (pci_id == NULL ||
sscanf(pci_id, "%x:%x", vendor_id, chip_id) != 2) {
- log_(_LOADER_WARNING, "MESA-LOADER: malformed or no PCI ID");
+ log_(_LOADER_WARNING, "MESA-LOADER: malformed or no PCI ID\n");
*chip_id = -1;
goto out;
}
@@ -166,11 +218,11 @@ loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
version = drmGetVersion(fd);
if (!version) {
- log_(_LOADER_WARNING, "MESA-LOADER: invalid drm fd");
+ log_(_LOADER_WARNING, "MESA-LOADER: invalid drm fd\n");
return FALSE;
}
if (!version->name) {
- log_(_LOADER_WARNING, "MESA-LOADER: unable to determine the driver name");
+ log_(_LOADER_WARNING, "MESA-LOADER: unable to determine the driver name\n");
drmFreeVersion(version);
return FALSE;
}
@@ -186,7 +238,7 @@ loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_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");
+ log_(_LOADER_WARNING, "MESA-LOADER: failed to get param for i915\n");
*chip_id = -1;
}
}
@@ -201,7 +253,7 @@ loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_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");
+ log_(_LOADER_WARNING, "MESA-LOADER: failed to get info for radeon\n");
*chip_id = -1;
}
}
@@ -240,6 +292,12 @@ loader_get_device_name_for_fd(int fd)
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 *));
udev = udev_new();
device = udev_device_new_from_fd(udev, fd);
@@ -274,12 +332,12 @@ loader_get_driver_for_fd(int fd, unsigned driver_types)
drmVersionPtr version = drmGetVersion(fd);
if (!version) {
- log_(_LOADER_WARNING, "failed to get driver name for fd %d", fd);
+ 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", driver, fd);
+ log_(_LOADER_INFO, "using driver %s for %d\n", driver, fd);
drmFreeVersion(version);
#endif
@@ -307,8 +365,8 @@ loader_get_driver_for_fd(int fd, unsigned driver_types)
}
out:
- log_(driver ? _LOADER_INFO : _LOADER_WARNING,
- "pci id for fd %d: %04x:%04x, driver %s",
+ log_(driver ? _LOADER_DEBUG : _LOADER_WARNING,
+ "pci id for fd %d: %04x:%04x, driver %s\n",
fd, vendor_id, chip_id, driver);
return driver;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-26 14:34:32 +0000