loader: introduce the loader util lib

All the various window system integration layers duplicate roughly the
same code for figuring out device and driver name, pci-id's, etc.  Which
is sad.  So extract it out into a loader util lib.

v2 (Emil)
* Separate the introduction of libloader from the code de-duplication.
* Strip out non-pci devices support.
* Add scons + Android build system support.
* Add VISIBILITY_CFLAGS to avoid exporting the loader funcs.

v3 (Emil)
* PIPE_OS_ANDROID is undefined at this scope, use ANDROID
* Make sure we define _EGL_NO_DRM when building only swrast

Signed-off-by: Rob Clark <[email protected]>
Signed-off-by: Emil Velikov <[email protected]>
Reviewed-by: Rob Clark <[email protected]>
Reviewed-by: Kristian Høgsberg <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 57 insertions, 0 deletions

diff --git a/src/loader/loader.h b/src/loader/loader.h
new file mode 100644
index 00000000000..dfd77baad0e
--- /dev/null
+++ b/src/loader/loader.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2013 Rob Clark <[email protected]>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ *    Rob Clark <[email protected]>
+ */
+
+#ifndef LOADER_H
+#define LOADER_H
+
+/* Helpers to figure out driver and device name, eg. from pci-id, etc. */
+
+#define _LOADER_DRI          (1 << 0)
+#define _LOADER_GALLIUM      (1 << 1)
+
+int
+loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id);
+
+char *
+loader_get_driver_for_fd(int fd, unsigned driver_types);
+
+char *
+loader_get_device_name_for_fd(int fd);
+
+
+/* for logging.. keep this aligned with egllog.h so we can just use
+ * _eglLog directly.
+ */
+
+#define _LOADER_FATAL   0   /* unrecoverable error */
+#define _LOADER_WARNING 1   /* recoverable error/problem */
+#define _LOADER_INFO    2   /* just useful info */
+#define _LOADER_DEBUG   3   /* useful info for debugging */
+
+void
+loader_set_logger(void (*logger)(int level, const char *fmt, ...));
+
+#endif /* LOADER_H */