mirror of https://github.com/ipxe/ipxe.git
147 lines
3.9 KiB
C
147 lines
3.9 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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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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 <gpxe/pci.h>
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#include <undi.h>
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#include <undirom.h>
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#include <undiload.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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* UNDI PCI driver
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*
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*/
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/**
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* Find UNDI ROM for PCI device
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*
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* @v pci PCI device
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* @ret undirom UNDI ROM, or NULL
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*
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* Try to find a driver for this device. Try an exact match on the
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* ROM address first, then fall back to a vendor/device ID match only
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*/
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static struct undi_rom * undipci_find_rom ( struct pci_device *pci ) {
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struct undi_rom *undirom;
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unsigned long rombase;
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rombase = pci_bar_start ( pci, PCI_ROM_ADDRESS );
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undirom = undirom_find_pci ( pci->vendor, pci->device, rombase );
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if ( ! undirom )
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undirom = undirom_find_pci ( pci->vendor, pci->device, 0 );
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return undirom;
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}
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/**
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* Probe PCI device
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*
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* @v pci PCI device
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* @v id PCI ID
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* @ret rc Return status code
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*/
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static int undipci_probe ( struct pci_device *pci,
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const struct pci_device_id *id __unused ) {
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struct undi_device *undi;
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struct undi_rom *undirom;
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unsigned int busdevfn = PCI_BUSDEVFN ( pci->bus, pci->devfn );
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int rc;
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/* Ignore non-network devices */
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if ( PCI_BASE_CLASS ( pci->class ) != PCI_BASE_CLASS_NETWORK )
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return -ENOTTY;
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/* Allocate UNDI device structure */
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undi = zalloc ( sizeof ( *undi ) );
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if ( ! undi )
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return -ENOMEM;
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pci_set_drvdata ( pci, undi );
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/* Find/create our pixie */
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if ( preloaded_undi.pci_busdevfn == busdevfn ) {
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/* Claim preloaded UNDI device */
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DBGC ( undi, "UNDI %p using preloaded UNDI device\n", undi );
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memcpy ( undi, &preloaded_undi, sizeof ( *undi ) );
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memset ( &preloaded_undi, 0, sizeof ( preloaded_undi ) );
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} else {
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/* Find UNDI ROM for PCI device */
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if ( ! ( undirom = undipci_find_rom ( pci ) ) ) {
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rc = -ENODEV;
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goto err_find_rom;
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}
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/* Call UNDI ROM loader to create pixie */
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if ( ( rc = undi_load_pci ( undi, undirom, busdevfn ) ) != 0 )
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goto err_load_pci;
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}
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/* Add to device hierarchy */
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snprintf ( undi->dev.name, sizeof ( undi->dev.name ),
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"UNDI-%s", pci->dev.name );
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memcpy ( &undi->dev.desc, &pci->dev.desc, sizeof ( undi->dev.desc ) );
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undi->dev.parent = &pci->dev;
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INIT_LIST_HEAD ( &undi->dev.children );
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list_add ( &undi->dev.siblings, &pci->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_undinet_probe;
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return 0;
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err_undinet_probe:
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undi_unload ( undi );
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list_del ( &undi->dev.siblings );
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err_find_rom:
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err_load_pci:
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free ( undi );
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pci_set_drvdata ( pci, NULL );
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return rc;
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}
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/**
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* Remove PCI device
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*
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* @v pci PCI device
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*/
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static void undipci_remove ( struct pci_device *pci ) {
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struct undi_device *undi = pci_get_drvdata ( pci );
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undinet_remove ( undi );
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undi_unload ( undi );
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list_del ( &undi->dev.siblings );
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free ( undi );
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pci_set_drvdata ( pci, NULL );
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}
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static struct pci_device_id undipci_nics[] = {
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PCI_ROM ( 0xffff, 0xffff, "undipci", "UNDI (PCI)" ),
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};
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struct pci_driver undipci_driver __pci_driver = {
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.ids = undipci_nics,
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.id_count = ( sizeof ( undipci_nics ) / sizeof ( undipci_nics[0] ) ),
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.probe = undipci_probe,
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.remove = undipci_remove,
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};
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