* Rob Clark <robclark@freedesktop.org>
*/
+#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>
+#ifdef MAJOR_IN_MKDEV
+#include <sys/mkdev.h>
+#endif
+#ifdef MAJOR_IN_SYSMACROS
+#include <sys/sysmacros.h>
#endif
#include "loader.h"
-#ifndef __NOT_HAVE_DRM_H
+#ifdef HAVE_LIBDRM
+#include <stdlib.h>
+#include <unistd.h>
#include <xf86drm.h>
+#ifdef USE_DRICONF
+#include "xmlconfig.h"
+#include "xmlpool.h"
+#endif
#endif
#define __IS_LOADER
-#include "pci_ids/pci_id_driver_map.h"
+#include "pci_id_driver_map.h"
static void default_logger(int level, const char *fmt, ...)
{
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)
+int
+loader_open_device(const char *device_name)
{
- if (!udev_handle) {
- udev_handle = dlopen("libudev.so.1", RTLD_LOCAL | RTLD_LAZY);
+ int fd;
+#ifdef O_CLOEXEC
+ fd = open(device_name, O_RDWR | O_CLOEXEC);
+ if (fd == -1 && errno == EINVAL)
+#endif
+ {
+ fd = open(device_name, O_RDWR);
+ if (fd != -1)
+ fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
}
+ return fd;
+}
+
+#if defined(HAVE_LIBDRM)
+#ifdef USE_DRICONF
+static const char __driConfigOptionsLoader[] =
+DRI_CONF_BEGIN
+ DRI_CONF_SECTION_INITIALIZATION
+ DRI_CONF_DEVICE_ID_PATH_TAG()
+ DRI_CONF_SECTION_END
+DRI_CONF_END;
- return udev_handle;
+static char *loader_get_dri_config_device_id(void)
+{
+ driOptionCache defaultInitOptions;
+ driOptionCache userInitOptions;
+ char *prime = NULL;
+
+ 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);
+
+ return prime;
}
+#endif
-static void *
-asserted_dlsym(void *dlopen_handle, const char *name)
+static char *drm_construct_id_path_tag(drmDevicePtr device)
{
- void *result = dlsym(dlopen_handle, name);
- assert(result);
- return result;
+/* Length of "pci-xxxx_xx_xx_x\0" */
+#define PCI_ID_PATH_TAG_LENGTH 17
+ char *tag = NULL;
+
+ if (device->bustype == DRM_BUS_PCI) {
+ tag = calloc(PCI_ID_PATH_TAG_LENGTH, sizeof(char));
+ if (tag == NULL)
+ return NULL;
+
+ snprintf(tag, PCI_ID_PATH_TAG_LENGTH, "pci-%04x_%02x_%02x_%1u",
+ device->businfo.pci->domain, device->businfo.pci->bus,
+ device->businfo.pci->dev, device->businfo.pci->func);
+ }
+ return tag;
}
-#define UDEV_SYMBOL(ret, name, args) \
- ret (*name) args = asserted_dlsym(udev_dlopen_handle(), #name);
+static bool drm_device_matches_tag(drmDevicePtr device, const char *prime_tag)
+{
+ char *tag = drm_construct_id_path_tag(device);
+ int ret;
+ if (tag == NULL)
+ return false;
-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));
+ ret = strcmp(tag, prime_tag);
- if (fstat(fd, &buf) < 0) {
- log_(_LOADER_WARNING, "MESA-LOADER: failed to stat fd %d\n", fd);
- return NULL;
- }
+ free(tag);
+ return ret == 0;
+}
- 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;
- }
+static char *drm_get_id_path_tag_for_fd(int fd)
+{
+ drmDevicePtr device;
+ char *tag;
+
+ if (drmGetDevice(fd, &device) != 0)
+ return NULL;
- return device;
+ tag = drm_construct_id_path_tag(device);
+ drmFreeDevice(&device);
+ return tag;
}
-int
-loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
+int loader_get_user_preferred_fd(int default_fd, int *different_device)
{
- 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;
-
- 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;
+/* Arbitrary "maximum" value of drm devices. */
+#define MAX_DRM_DEVICES 32
+ const char *dri_prime = getenv("DRI_PRIME");
+ 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
+ prime = loader_get_dri_config_device_id();
+#endif
+
+ if (prime == NULL) {
+ *different_device = 0;
+ return default_fd;
}
- 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\n");
- *chip_id = -1;
- goto out;
+ default_tag = drm_get_id_path_tag_for_fd(default_fd);
+ if (default_tag == NULL)
+ goto err;
+
+ num_devices = drmGetDevices(devices, MAX_DRM_DEVICES);
+ if (num_devices < 0)
+ goto err;
+
+ /* 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")) {
+ /* 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 {
+ 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;
+ }
+ }
}
-out:
- if (device)
- udev_device_unref(device);
- if (udev)
- udev_unref(udev);
+ if (!found) {
+ drmFreeDevices(devices, num_devices);
+ goto err;
+ }
- return (*chip_id >= 0);
-}
+ fd = loader_open_device(devices[i]->nodes[DRM_NODE_RENDER]);
+ drmFreeDevices(devices, num_devices);
+ if (fd < 0)
+ goto err;
-#elif defined(ANDROID) && !defined(__NOT_HAVE_DRM_H)
+ close(default_fd);
-/* for i915 */
-#include <i915_drm.h>
-/* for radeon */
-#include <radeon_drm.h>
+ *different_device = !!strcmp(default_tag, prime);
-int
-loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
+ free(default_tag);
+ free(prime);
+ return fd;
+
+ err:
+ *different_device = 0;
+
+ free(default_tag);
+ free(prime);
+ return default_fd;
+}
+#else
+int loader_get_user_preferred_fd(int default_fd, int *different_device)
{
- drmVersionPtr version;
+ *different_device = 0;
+ return default_fd;
+}
+#endif
- *chip_id = -1;
+#if defined(HAVE_LIBDRM)
+static int
+dev_node_from_fd(int fd, unsigned int *maj, unsigned int *min)
+{
+ struct stat buf;
- version = drmGetVersion(fd);
- if (!version) {
- log_(_LOADER_WARNING, "MESA-LOADER: invalid drm fd\n");
- return FALSE;
+ if (fstat(fd, &buf) < 0) {
+ log_(_LOADER_WARNING, "MESA-LOADER: failed to stat fd %d\n", fd);
+ return -1;
}
- if (!version->name) {
- log_(_LOADER_WARNING, "MESA-LOADER: unable to determine the driver name\n");
- drmFreeVersion(version);
- return FALSE;
+
+ if (!S_ISCHR(buf.st_mode)) {
+ log_(_LOADER_WARNING, "MESA-LOADER: fd %d not a character device\n", fd);
+ return -1;
}
- if (strcmp(version->name, "i915") == 0) {
- struct drm_i915_getparam gp;
- int ret;
+ *maj = major(buf.st_rdev);
+ *min = minor(buf.st_rdev);
- *vendor_id = 0x8086;
+ return 0;
+}
+#endif
- 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;
+#if defined(HAVE_LIBDRM)
+
+static int
+drm_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
+{
+ drmDevicePtr device;
+ int ret;
+
+ if (drmGetDevice(fd, &device) == 0) {
+ if (device->bustype == DRM_BUS_PCI) {
+ *vendor_id = device->deviceinfo.pci->vendor_id;
+ *chip_id = device->deviceinfo.pci->device_id;
+ ret = 1;
}
- }
- 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_WARNING, "MESA-LOADER: device is not located on the PCI bus\n");
+ ret = 0;
}
+ 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 = 0;
}
- drmFreeVersion(version);
-
- return (*chip_id >= 0);
+ return ret;
}
+#endif
-#else
int
loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
{
+#if HAVE_LIBDRM
+ if (drm_get_pci_id_for_fd(fd, vendor_id, chip_id))
+ return 1;
+#endif
return 0;
}
-#endif
+#if defined(HAVE_LIBDRM)
+static char *
+drm_get_device_name_for_fd(int fd)
+{
+ unsigned int maj, min;
+ char buf[0x40];
+ int n;
+
+ if (dev_node_from_fd(fd, &maj, &min) < 0)
+ return NULL;
+
+ n = snprintf(buf, sizeof(buf), DRM_DEV_NAME, DRM_DIR_NAME, min);
+ if (n == -1 || n >= sizeof(buf))
+ return NULL;
+
+ return strdup(buf);
+}
+#endif
char *
loader_get_device_name_for_fd(int fd)
{
- char *device_name = NULL;
-#ifdef HAVE_LIBUDEV
- 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);
- if (device == NULL)
- return NULL;
+ char *result = 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);
+#if HAVE_LIBDRM
+ if ((result = drm_get_device_name_for_fd(fd)))
+ return result;
#endif
- return device_name;
+ 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
+#if HAVE_LIBDRM
/* fallback to drmGetVersion(): */
drmVersionPtr version = drmGetVersion(fd);
if (vendor_id != driver_map[i].vendor_id)
continue;
- if (!(driver_types & driver_map[i].driver_types))
+ if (driver_map[i].predicate && !driver_map[i].predicate(fd))
continue;
if (driver_map[i].num_chips_ids == -1) {
projects / mesa.git / blobdiff