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/*
* 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 <gpxe/init.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 */
strncpy ( undi->dev.name, "UNDI",
( sizeof ( undi->dev.name ) - 1 ) );
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;
} else if ( undi->isapnp_csn != UNDI_NO_ISAPNP_CSN ) {
undi->dev.desc.bus_type = BUS_TYPE_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 flags Shutdown flags
*/
static void undionly_shutdown ( int flags ) {
/* If we are shutting down to boot an OS, clear the "keep PXE
* stack" flag.
*/
if ( flags & SHUTDOWN_BOOT )
preloaded_undi.flags &= ~UNDI_FL_KEEP_ALL;
}
struct startup_fn startup_undionly __startup_fn ( STARTUP_LATE ) = {
.shutdown = undionly_shutdown,
};
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