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- /*
- * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- #include <string.h>
- #include <gpxe/list.h>
- #include <gpxe/tables.h>
- #include <gpxe/device.h>
- #include <gpxe/init.h>
-
- /**
- * @file
- *
- * Device model
- *
- */
-
- static struct root_device root_devices[0]
- __table_start ( struct root_device, root_devices );
- static struct root_device root_devices_end[0]
- __table_end ( struct root_device, root_devices );
-
- /** Registered root devices */
- static LIST_HEAD ( devices );
-
- /**
- * Probe a root device
- *
- * @v rootdev Root device
- * @ret rc Return status code
- */
- static int rootdev_probe ( struct root_device *rootdev ) {
- int rc;
-
- DBG ( "Adding %s root bus\n", rootdev->dev.name );
- if ( ( rc = rootdev->driver->probe ( rootdev ) ) != 0 ) {
- DBG ( "Failed to add %s root bus: %s\n",
- rootdev->dev.name, strerror ( rc ) );
- return rc;
- }
-
- return 0;
- }
-
- /**
- * Remove a root device
- *
- * @v rootdev Root device
- */
- static void rootdev_remove ( struct root_device *rootdev ) {
- rootdev->driver->remove ( rootdev );
- DBG ( "Removed %s root bus\n", rootdev->dev.name );
- }
-
- /**
- * Probe all devices
- *
- * This initiates probing for all devices in the system. After this
- * call, the device hierarchy will be populated, and all hardware
- * should be ready to use.
- */
- static void probe_devices ( void ) {
- struct root_device *rootdev;
- int rc;
-
- for ( rootdev = root_devices; rootdev < root_devices_end; rootdev++ ) {
- list_add ( &rootdev->dev.siblings, &devices );
- INIT_LIST_HEAD ( &rootdev->dev.children );
- if ( ( rc = rootdev_probe ( rootdev ) ) != 0 )
- list_del ( &rootdev->dev.siblings );
- }
- }
-
- /**
- * Remove all devices
- *
- */
- static void remove_devices ( int flags ) {
- struct root_device *rootdev;
- struct root_device *tmp;
-
- if ( flags & SHUTDOWN_KEEP_DEVICES ) {
- DBG ( "Refusing to remove devices on shutdown\n" );
- return;
- }
-
- list_for_each_entry_safe ( rootdev, tmp, &devices, dev.siblings ) {
- rootdev_remove ( rootdev );
- list_del ( &rootdev->dev.siblings );
- }
- }
-
- struct startup_fn startup_devices __startup_fn ( STARTUP_NORMAL ) = {
- .startup = probe_devices,
- .shutdown = remove_devices,
- };
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