mirror of https://github.com/ipxe/ipxe.git
139 lines
3.7 KiB
C
139 lines
3.7 KiB
C
/*
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* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ipxe/device.h>
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#include <ipxe/init.h>
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#include <ipxe/pci.h>
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#include <undi.h>
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#include <undinet.h>
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#include <undipreload.h>
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/** @file
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*
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* "Pure" UNDI driver
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*
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* This is the UNDI driver without explicit support for PCI or any
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* other bus type. It is capable only of using the preloaded UNDI
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* device. It must not be combined in an image with any other
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* drivers.
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*
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* If you want a PXE-loadable image that contains only the UNDI
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* driver, build "bin/undionly.kpxe".
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*
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* If you want any other image format, or any other drivers in
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* addition to the UNDI driver, build e.g. "bin/undi.dsk".
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*/
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/**
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* Probe UNDI root bus
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*
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* @v rootdev UNDI bus root device
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*
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* Scans the UNDI bus for devices and registers all devices it can
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* find.
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*/
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static int undibus_probe ( struct root_device *rootdev ) {
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struct undi_device *undi = &preloaded_undi;
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int rc;
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/* Check for a valie preloaded UNDI device */
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if ( ! undi->entry.segment ) {
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DBG ( "No preloaded UNDI device found!\n" );
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return -ENODEV;
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}
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/* Add to device hierarchy */
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undi->dev.driver_name = "undionly";
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if ( undi->pci_busdevfn != UNDI_NO_PCI_BUSDEVFN ) {
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undi->dev.desc.bus_type = BUS_TYPE_PCI;
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undi->dev.desc.location = undi->pci_busdevfn;
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undi->dev.desc.vendor = undi->pci_vendor;
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undi->dev.desc.device = undi->pci_device;
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snprintf ( undi->dev.name, sizeof ( undi->dev.name ),
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"UNDI-PCI%02x:%02x.%x",
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PCI_BUS ( undi->pci_busdevfn ),
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PCI_SLOT ( undi->pci_busdevfn ),
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PCI_FUNC ( undi->pci_busdevfn ) );
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} else if ( undi->isapnp_csn != UNDI_NO_ISAPNP_CSN ) {
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undi->dev.desc.bus_type = BUS_TYPE_ISAPNP;
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snprintf ( undi->dev.name, sizeof ( undi->dev.name ),
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"UNDI-ISAPNP" );
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}
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undi->dev.parent = &rootdev->dev;
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list_add ( &undi->dev.siblings, &rootdev->dev.children);
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INIT_LIST_HEAD ( &undi->dev.children );
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/* Create network device */
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if ( ( rc = undinet_probe ( undi ) ) != 0 )
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goto err;
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return 0;
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err:
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list_del ( &undi->dev.siblings );
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return rc;
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}
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/**
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* Remove UNDI root bus
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*
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* @v rootdev UNDI bus root device
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*/
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static void undibus_remove ( struct root_device *rootdev __unused ) {
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struct undi_device *undi = &preloaded_undi;
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undinet_remove ( undi );
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list_del ( &undi->dev.siblings );
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}
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/** UNDI bus root device driver */
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static struct root_driver undi_root_driver = {
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.probe = undibus_probe,
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.remove = undibus_remove,
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};
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/** UNDI bus root device */
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struct root_device undi_root_device __root_device = {
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.dev = { .name = "UNDI" },
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.driver = &undi_root_driver,
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};
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/**
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* Prepare for exit
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*
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* @v booting System is shutting down for OS boot
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*/
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static void undionly_shutdown ( int booting ) {
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/* If we are shutting down to boot an OS, clear the "keep PXE
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* stack" flag.
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*/
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if ( booting )
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preloaded_undi.flags &= ~UNDI_FL_KEEP_ALL;
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}
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struct startup_fn startup_undionly __startup_fn ( STARTUP_LATE ) = {
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.shutdown = undionly_shutdown,
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};
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