Removed dev.c as it's no longer in use (driver loading is now done by
the device manager). git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10835 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
@@ -11,7 +11,6 @@ SubDir OBOS_TOP src kernel drivers ;
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}
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}
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KernelStaticLibrary libdrivers :
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KernelStaticLibrary libdrivers :
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<$(SOURCE_GRIST)>dev.c
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$(console_src)
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$(console_src)
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<$(SOURCE_GRIST)>fb_console/fb_console.c
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<$(SOURCE_GRIST)>fb_console/fb_console.c
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:
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:
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@@ -1,202 +0,0 @@
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/* Contains code to load dev module and bootstrap it */
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/*
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** Copyright 2001, Travis Geiselbrecht. All rights reserved.
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** Distributed under the terms of the NewOS License.
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*/
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#include <kernel.h>
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#include <boot/stage2.h>
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#include <dev.h>
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#include <vfs.h>
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#include <debug.h>
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#include <elf.h>
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#include <Errors.h>
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#include <devfs.h>
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#include <Drivers.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#ifdef ARCH_x86
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# include <arch/x86/console_dev.h>
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#endif
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#include <fb_console.h>
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#include <stdio.h>
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/* XXX - move this into the core
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* These are mainly here to allow testing and this needs to be revisited
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*/
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const char *device_paths[] = {
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"/boot/beos/system/add-ons/kernel/drivers/dev",
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"/boot/beos/system/add-ons/kernel/drivers/dev/audio",
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"/boot/beos/system/add-ons/kernel/drivers/dev/misc",
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"/boot/beos/system/add-ons/kernel/drivers/dev/net",
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"/boot/drivers/dev",
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NULL
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};
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int
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dev_init(kernel_args *ka)
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{
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const char **ptr;
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dprintf("dev_init: entry\n");
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for (ptr = device_paths; (*ptr); ptr++) {
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DIR *dir = opendir(*ptr);
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if (dir != NULL) {
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struct dirent *dirent;
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while ((dirent = readdir(dir)) != NULL) {
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if (!strcmp(dirent->d_name, ".") || !strcmp(dirent->d_name, ".."))
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continue;
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dprintf("loading '%s' dev module\n", dirent->d_name);
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dev_load_dev_module(dirent->d_name, *ptr);
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dprintf("loaded dev module!\n");
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}
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closedir(dir);
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}
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}
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/* now run the oddballs we have, consoles at present */
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/* XXX - these are x86 and may not be applicable to all platforms */
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#ifdef ARCH_x86
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console_dev_init(ka);
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#endif
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fb_console_dev_init(ka);
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return 0;
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}
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image_id
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dev_load_dev_module(const char *name, const char *dirpath)
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{
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image_id image;
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char path[B_PATH_NAME_LENGTH];
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uint32 *api_version = NULL;
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status_t (*init_hardware)(void);
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status_t (*init_driver)(void);
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status_t (*uninit_driver)(void);
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device_hooks *(*find_device)(const char *);
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const char **(*publish_devices)(void);
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const char **devfs_paths;
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bool keep_loaded;
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status_t status;
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sprintf(path, "%s/%s", dirpath, name);
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/* Load the module, return error if unable */
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image = load_kernel_add_on(path);
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if (image < 0)
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return image;
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/* Don't get all the symbols we will require initially. Just get the
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* ones we need to check we have a valid module.
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*/
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// For a valid device driver the following exports are required
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if (get_image_symbol(image, "publish_devices", B_SYMBOL_TYPE_TEXT, (void **)&publish_devices) != B_OK
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|| get_image_symbol(image, "api_version", B_SYMBOL_TYPE_DATA, (void **)&api_version) != B_OK
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|| get_image_symbol(image, "find_device", B_SYMBOL_TYPE_TEXT, (void **)&find_device) != B_OK) {
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dprintf("DEV: %s: mandatory driver symbol(s) missing! :(\n", name);
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status = EINVAL;
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goto error;
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}
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/* Next, do we have an init_hardware function? If we do run it and
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* if it fails simply fall through to the exit...
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*/
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if (get_image_symbol(image, "init_hardware", B_SYMBOL_TYPE_TEXT,
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(void **)&init_hardware) == B_OK
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&& init_hardware() != B_OK) {
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dprintf("DEV: %s: init_hardware failed :(\n", name);
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status = ENXIO;
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goto error;
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}
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/* OK, so we now have what appears to be a valid module that has
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* completed init_hardware and thus thinks it should be used.
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* ToDo:
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* - this is bogus!
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* - the driver init routines should be called by devfs and
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* only when the driver is first needed. However, that level
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* level of support is not yet in devfs, so we have a hack
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* here that calls the init_driver function at this point.
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* As a result we will check to see if we actually manage to
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* publish the device, and if we do we will keep the module
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* loaded.
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* - remove this when devfs is fixed!
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*/
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if (get_image_symbol(image, "init_driver", B_SYMBOL_TYPE_TEXT,
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(void **)&init_driver) == B_OK
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&& init_driver() != B_OK) {
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dprintf("DEV: %s: init_driver failed :(\n", name);
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status = ENXIO;
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goto error;
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}
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/* Start of with the keep_loaded as false. If we have a successful
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* call to devfs_publish_device we will set this to true.
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*/
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keep_loaded = false;
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devfs_paths = publish_devices();
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for (; *devfs_paths; devfs_paths++) {
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device_hooks *hooks = find_device(*devfs_paths);
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if (hooks && devfs_publish_device(*devfs_paths, NULL, hooks) == 0)
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keep_loaded = true;
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}
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/* If we've managed to publish at least one of the device entry
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* points that the driver wished us to then we MUST keep the driver in
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* memory or the pointer that devfs has will become invalid.
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* XXX - This is bogus, see above
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*/
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if (keep_loaded)
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return image;
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/* If the function gets here then the following has happenned...
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* - the driver has been loaded
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* - it has appeared valid
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* - init_hardware has returned saying it should be used
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* - init_driver has been run OK
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* - publish_devices return empty paths list or
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* devfs_publish_device has for some reason failed on each path.
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*/
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if (get_image_symbol(image, "uninit_driver", B_SYMBOL_TYPE_TEXT,
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(void **)&uninit_driver) == B_OK)
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uninit_driver();
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// ToDo: That might not be the best error code
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status = ENXIO;
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error:
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/* If we've gotten here then the driver will be unloaded and an
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* error code returned.
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*/
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unload_kernel_add_on(image);
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return status;
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}
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/* This is no longer part of the public kernel API, so we just export the symbol */
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status_t load_driver_symbols(const char *driver_name);
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status_t
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load_driver_symbols(const char *driver_name)
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{
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// This will be globally done for the whole kernel via the settings file.
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// We don't have to do anything here.
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return B_OK;
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}
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