diff options
Diffstat (limited to 'roms/ipxe/src/arch/i386/drivers/net/undionly.c')
| -rw-r--r-- | roms/ipxe/src/arch/i386/drivers/net/undionly.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/roms/ipxe/src/arch/i386/drivers/net/undionly.c b/roms/ipxe/src/arch/i386/drivers/net/undionly.c new file mode 100644 index 000000000..70dbe4bfd --- /dev/null +++ b/roms/ipxe/src/arch/i386/drivers/net/undionly.c @@ -0,0 +1,142 @@ +/* + * 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., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + * You can also choose to distribute this program under the terms of + * the Unmodified Binary Distribution Licence (as given in the file + * COPYING.UBDL), provided that you have satisfied its requirements. + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +#include <stdint.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <ipxe/device.h> +#include <ipxe/init.h> +#include <ipxe/pci.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 ) { + struct undi_device *undi = &preloaded_undi; + int rc; + + /* Check for a valie preloaded UNDI device */ + if ( ! undi->entry.segment ) { + DBG ( "No preloaded UNDI device found!\n" ); + return -ENODEV; + } + + /* Add to device hierarchy */ + undi->dev.driver_name = "undionly"; + if ( undi->pci_busdevfn != UNDI_NO_PCI_BUSDEVFN ) { + undi->dev.desc.bus_type = BUS_TYPE_PCI; + undi->dev.desc.location = undi->pci_busdevfn; + undi->dev.desc.vendor = undi->pci_vendor; + undi->dev.desc.device = undi->pci_device; + snprintf ( undi->dev.name, sizeof ( undi->dev.name ), + "UNDI-PCI%02x:%02x.%x", + PCI_BUS ( undi->pci_busdevfn ), + PCI_SLOT ( undi->pci_busdevfn ), + PCI_FUNC ( undi->pci_busdevfn ) ); + } else if ( undi->isapnp_csn != UNDI_NO_ISAPNP_CSN ) { + undi->dev.desc.bus_type = BUS_TYPE_ISAPNP; + snprintf ( undi->dev.name, sizeof ( undi->dev.name ), + "UNDI-ISAPNP" ); + } + undi->dev.parent = &rootdev->dev; + list_add ( &undi->dev.siblings, &rootdev->dev.children); + INIT_LIST_HEAD ( &undi->dev.children ); + + /* Create network device */ + if ( ( rc = undinet_probe ( undi ) ) != 0 ) + goto err; + + return 0; + + err: + list_del ( &undi->dev.siblings ); + return rc; +} + +/** + * Remove UNDI root bus + * + * @v rootdev UNDI bus root device + */ +static void undibus_remove ( struct root_device *rootdev __unused ) { + struct undi_device *undi = &preloaded_undi; + + undinet_remove ( undi ); + list_del ( &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 = { + .dev = { .name = "UNDI" }, + .driver = &undi_root_driver, +}; + +/** + * Prepare for exit + * + * @v booting System is shutting down for OS boot + */ +static void undionly_shutdown ( int booting ) { + /* If we are shutting down to boot an OS, clear the "keep PXE + * stack" flag. + */ + if ( booting ) + preloaded_undi.flags &= ~UNDI_FL_KEEP_ALL; +} + +struct startup_fn startup_undionly __startup_fn ( STARTUP_LATE ) = { + .shutdown = undionly_shutdown, +}; |