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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/pci.h>
#include <undi.h>
#include <undirom.h>
#include <undiload.h>
#include <undinet.h>
#include <undipreload.h>
/** @file
*
* UNDI PCI driver
*
*/
/**
* Find UNDI ROM for PCI device
*
* @v pci PCI device
* @ret undirom UNDI ROM, or NULL
*
* Try to find a driver for this device. Try an exact match on the
* ROM address first, then fall back to a vendor/device ID match only
*/
static struct undi_rom * undipci_find_rom ( struct pci_device *pci ) {
struct undi_rom *undirom;
unsigned long rombase;
rombase = pci_bar_start ( pci, PCI_ROM_ADDRESS );
undirom = undirom_find_pci ( pci->vendor, pci->device, rombase );
if ( ! undirom )
undirom = undirom_find_pci ( pci->vendor, pci->device, 0 );
return undirom;
}
/**
* Probe PCI device
*
* @v pci PCI device
* @v id PCI ID
* @ret rc Return status code
*/
static int undipci_probe ( struct pci_device *pci,
const struct pci_device_id *id __unused ) {
struct undi_device *undi;
struct undi_rom *undirom;
unsigned int busdevfn = ( ( pci->bus << 8 ) | pci->devfn );
int rc;
/* Ignore non-network devices */
if ( PCI_BASE_CLASS ( pci->class ) != PCI_BASE_CLASS_NETWORK )
return -ENOTTY;
/* Allocate UNDI device structure */
undi = malloc ( sizeof ( *undi ) );
if ( ! undi )
return -ENOMEM;
memset ( undi, 0, sizeof ( *undi ) );
pci_set_drvdata ( pci, undi );
/* Find/create our pixie */
if ( preloaded_undi.pci_busdevfn == busdevfn ) {
/* Claim preloaded UNDI device */
DBGC ( undi, "UNDI %p using preloaded UNDI device\n", undi );
memcpy ( undi, &preloaded_undi, sizeof ( *undi ) );
memset ( &preloaded_undi, 0, sizeof ( preloaded_undi ) );
} else {
/* Find UNDI ROM for PCI device */
if ( ! ( undirom = undipci_find_rom ( pci ) ) ) {
rc = -ENODEV;
goto err_find_rom;
}
/* Call UNDI ROM loader to create pixie */
if ( ( rc = undi_load_pci ( undi, undirom, busdevfn ) ) != 0 )
goto err_load_pci;
}
/* Add to device hierarchy */
undi->dev.parent = &pci->dev;
INIT_LIST_HEAD ( &undi->dev.children );
list_add ( &undi->dev.siblings, &pci->dev.children );
/* Create network device */
if ( ( rc = undinet_probe ( undi ) ) != 0 )
goto err_undinet_probe;
return 0;
err_undinet_probe:
undi_unload ( undi );
list_del ( &undi->dev.siblings );
err_find_rom:
err_load_pci:
free ( undi );
pci_set_drvdata ( pci, NULL );
return rc;
}
/**
* Remove PCI device
*
* @v pci PCI device
*/
static void undipci_remove ( struct pci_device *pci ) {
struct undi_device *undi = pci_get_drvdata ( pci );
undi_unload ( undi );
list_del ( &undi->dev.siblings );
free ( undi );
pci_set_drvdata ( pci, NULL );
}
static struct pci_device_id undipci_nics[] = {
PCI_ROM ( 0xffff, 0xffff, "undipci", "UNDI (PCI)" ),
};
struct pci_driver undipci_driver __pci_driver = {
.ids = undipci_nics,
.id_count = ( sizeof ( undipci_nics ) / sizeof ( undipci_nics[0] ) ),
.probe = undipci_probe,
.remove = undipci_remove,
};
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