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author | Michael Brown | 2007-01-09 04:20:22 +0100 |
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committer | Michael Brown | 2007-01-09 04:20:22 +0100 |
commit | d606edb41dc0df82ea4f6bc23296720d37d6fe84 (patch) | |
tree | 0d599c7054761114257925d59c71f9bb59ea12e4 | |
parent | Added missing call to undinet_remove() (diff) | |
download | ipxe-d606edb41dc0df82ea4f6bc23296720d37d6fe84.tar.gz ipxe-d606edb41dc0df82ea4f6bc23296720d37d6fe84.tar.xz ipxe-d606edb41dc0df82ea4f6bc23296720d37d6fe84.zip |
Added UNDI root bus driver (which saves including all the PCI bus code,
UNDI ROM code etc. when you just want a "undi.kpxe"-type image).
This driver cannot be used in conjunction with any other driver (it will
crash), or in any other format than .kpxe (it just won't find any network
devices).
-rw-r--r-- | src/arch/i386/drivers/net/undionly.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/arch/i386/drivers/net/undionly.c b/src/arch/i386/drivers/net/undionly.c new file mode 100644 index 00000000..5b8ff977 --- /dev/null +++ b/src/arch/i386/drivers/net/undionly.c @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2007 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 <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <gpxe/device.h> +#include <undi.h> +#include <undinet.h> +#include <undipreload.h> + +/** @file + * + * "Pure" UNDI driver + * + * This is the UNDI driver without explicit support for PCI or any + * other bus type. It is capable only of using the preloaded UNDI + * device. It must not be combined in an image with any other + * drivers. + * + * If you want a PXE-loadable image that contains only the UNDI + * driver, build "bin/undionly.kpxe". + * + * If you want any other image format, or any other drivers in + * addition to the UNDI driver, build e.g. "bin/undi.dsk". + */ + +/** + * Probe UNDI root bus + * + * @v rootdev UNDI bus root device + * + * Scans the UNDI bus for devices and registers all devices it can + * find. + */ +static int undibus_probe ( struct root_device *rootdev ) { + int rc; + + /* Check for a valie preloaded UNDI device */ + if ( ! preloaded_undi.entry.segment ) { + DBG ( "No preloaded UNDI device found!\n" ); + return -ENODEV; + } + + /* Add to device hierarchy */ + preloaded_undi.dev.parent = &rootdev->dev; + list_add ( &preloaded_undi.dev.siblings, &rootdev->dev.children); + INIT_LIST_HEAD ( &preloaded_undi.dev.children ); + + /* Create network device */ + if ( ( rc = undinet_probe ( &preloaded_undi ) ) != 0 ) + goto err; + + return 0; + + err: + list_del ( &preloaded_undi.dev.siblings ); + return rc; +} + +/** + * Remove UNDI root bus + * + * @v rootdev UNDI bus root device + */ +static void undibus_remove ( struct root_device *rootdev __unused ) { + undinet_remove ( &preloaded_undi ); + list_del ( &preloaded_undi.dev.siblings ); +} + +/** UNDI bus root device driver */ +static struct root_driver undi_root_driver = { + .probe = undibus_probe, + .remove = undibus_remove, +}; + +/** UNDI bus root device */ +struct root_device undi_root_device __root_device = { + .name = "UNDI", + .driver = &undi_root_driver, +}; |