![Michael Brown](/assets/img/avatar_default.png)
Use generic fields in struct device_description rather than assuming that the struct device * is contained within a pci_device or isapnp_device; this assumption is broken when using the undionly driver. Add PXENV_UNDI_SET_STATION_ADDRESS.
764 lines
20 KiB
C
764 lines
20 KiB
C
/**************************************************************************
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*
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* isapnp.c -- Etherboot isapnp support for the 3Com 3c515
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* Written 2002-2003 by Timothy Legge <tlegge@rogers.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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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* Portions of this code:
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* Copyright (C) 2001 P.J.H.Fox (fox@roestock.demon.co.uk)
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*
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*
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* REVISION HISTORY:
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* ================
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* Version 0.1 April 26, 2002 TJL
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* Version 0.2 01/08/2003 TJL Moved outside the 3c515.c driver file
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* Version 0.3 Sept 23, 2003 timlegge Change delay to currticks
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*
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*
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* Generalised into an ISAPnP bus that can be used by more than just
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* the 3c515 by Michael Brown <mbrown@fensystems.co.uk>
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*
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***************************************************************************/
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/** @file
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*
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* ISAPnP bus support
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*
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* Etherboot orignally gained ISAPnP support in a very limited way for
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* the 3c515 NIC. The current implementation is almost a complete
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* rewrite based on the ISAPnP specification, with passing reference
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* to the Linux ISAPnP code.
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*
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* There can be only one ISAPnP bus in a system. Once the read port
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* is known and all cards have been allocated CSNs, there's nothing to
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* be gained by re-scanning for cards.
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*
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* However, we shouldn't make scanning the ISAPnP bus an INIT_FN(),
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* because even ISAPnP probing can still screw up other devices on the
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* ISA bus. We therefore probe only when we are first asked to find
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* an ISAPnP device.
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*
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* External code (e.g. the ISAPnP ROM prefix) may already know the
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* read port address, in which case it can store it in
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* #isapnp_read_port. Note that setting the read port address in this
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* way will prevent further isolation from taking place; you should
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* set the read port address only if you know that devices have
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* already been allocated CSNs.
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*
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <errno.h>
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#include <io.h>
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#include <timer.h>
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#include <gpxe/isapnp.h>
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/**
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* ISAPnP Read Port address.
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*
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* ROM prefix may be able to set this address, which is why this is
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* non-static.
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*/
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uint16_t isapnp_read_port;
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static struct isapnp_driver isapnp_drivers[0]
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__table_start ( struct isapnp_driver, isapnp_drivers );
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static struct isapnp_driver isapnp_drivers_end[0]
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__table_end ( struct isapnp_driver, isapnp_drivers );
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static void isapnpbus_remove ( struct root_device *rootdev );
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/*
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* ISAPnP utility functions
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*
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*/
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#define ISAPNP_CARD_ID_FMT "ID %04x:%04x (\"%s\") serial %lx"
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#define ISAPNP_CARD_ID_DATA(identifier) \
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(identifier)->vendor_id, (identifier)->prod_id, \
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isa_id_string ( (identifier)->vendor_id, (identifier)->prod_id ), \
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(identifier)->serial
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#define ISAPNP_DEV_ID_FMT "ID %04x:%04x (\"%s\")"
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#define ISAPNP_DEV_ID_DATA(isapnp) \
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(isapnp)->vendor_id, (isapnp)->prod_id, \
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isa_id_string ( (isapnp)->vendor_id, (isapnp)->prod_id )
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static inline void isapnp_write_address ( unsigned int address ) {
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outb ( address, ISAPNP_ADDRESS );
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}
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static inline void isapnp_write_data ( unsigned int data ) {
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outb ( data, ISAPNP_WRITE_DATA );
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}
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static inline unsigned int isapnp_read_data ( void ) {
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return inb ( isapnp_read_port );
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}
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static inline void isapnp_write_byte ( unsigned int address,
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unsigned int value ) {
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isapnp_write_address ( address );
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isapnp_write_data ( value );
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}
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static inline unsigned int isapnp_read_byte ( unsigned int address ) {
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isapnp_write_address ( address );
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return isapnp_read_data ();
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}
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static inline unsigned int isapnp_read_word ( unsigned int address ) {
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/* Yes, they're in big-endian order */
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return ( ( isapnp_read_byte ( address ) << 8 )
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| isapnp_read_byte ( address + 1 ) );
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}
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/** Inform cards of a new read port address */
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static inline void isapnp_set_read_port ( void ) {
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isapnp_write_byte ( ISAPNP_READPORT, ( isapnp_read_port >> 2 ) );
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}
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/**
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* Enter the Isolation state.
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*
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* Only cards currently in the Sleep state will respond to this
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* command.
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*/
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static inline void isapnp_serialisolation ( void ) {
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isapnp_write_address ( ISAPNP_SERIALISOLATION );
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}
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/**
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* Enter the Wait for Key state.
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*
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* All cards will respond to this command, regardless of their current
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* state.
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*/
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static inline void isapnp_wait_for_key ( void ) {
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isapnp_write_byte ( ISAPNP_CONFIGCONTROL, ISAPNP_CONFIG_WAIT_FOR_KEY );
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}
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/**
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* Reset (i.e. remove) Card Select Number.
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*
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* Only cards currently in the Sleep state will respond to this
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* command.
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*/
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static inline void isapnp_reset_csn ( void ) {
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isapnp_write_byte ( ISAPNP_CONFIGCONTROL, ISAPNP_CONFIG_RESET_CSN );
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}
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/**
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* Place a specified card into the Config state.
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*
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* @v csn Card Select Number
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* @ret None -
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* @err None -
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*
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* Only cards currently in the Sleep, Isolation, or Config states will
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* respond to this command. The card that has the specified CSN will
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* enter the Config state, all other cards will enter the Sleep state.
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*/
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static inline void isapnp_wake ( uint8_t csn ) {
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isapnp_write_byte ( ISAPNP_WAKE, csn );
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}
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static inline unsigned int isapnp_read_resourcedata ( void ) {
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return isapnp_read_byte ( ISAPNP_RESOURCEDATA );
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}
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static inline unsigned int isapnp_read_status ( void ) {
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return isapnp_read_byte ( ISAPNP_STATUS );
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}
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/**
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* Assign a Card Select Number to a card, and enter the Config state.
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*
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* @v csn Card Select Number
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*
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* Only cards in the Isolation state will respond to this command.
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* The isolation protocol is designed so that only one card will
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* remain in the Isolation state by the time the isolation protocol
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* completes.
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*/
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static inline void isapnp_write_csn ( unsigned int csn ) {
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isapnp_write_byte ( ISAPNP_CARDSELECTNUMBER, csn );
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}
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static inline void isapnp_logicaldevice ( unsigned int logdev ) {
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isapnp_write_byte ( ISAPNP_LOGICALDEVICENUMBER, logdev );
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}
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static inline void isapnp_activate ( unsigned int logdev ) {
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isapnp_logicaldevice ( logdev );
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isapnp_write_byte ( ISAPNP_ACTIVATE, 1 );
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}
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static inline void isapnp_deactivate ( unsigned int logdev ) {
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isapnp_logicaldevice ( logdev );
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isapnp_write_byte ( ISAPNP_ACTIVATE, 0 );
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}
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static inline unsigned int isapnp_read_iobase ( unsigned int index ) {
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return isapnp_read_word ( ISAPNP_IOBASE ( index ) );
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}
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static inline unsigned int isapnp_read_irqno ( unsigned int index ) {
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return isapnp_read_byte ( ISAPNP_IRQNO ( index ) );
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}
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static void isapnp_delay ( void ) {
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udelay ( 1000 );
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}
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/**
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* Linear feedback shift register.
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*
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* @v lfsr Current value of the LFSR
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* @v input_bit Current input bit to the LFSR
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* @ret lfsr Next value of the LFSR
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*
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* This routine implements the linear feedback shift register as
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* described in Appendix B of the PnP ISA spec. The hardware
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* implementation uses eight D-type latches and two XOR gates. I
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* think this is probably the smallest possible implementation in
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* software. Six instructions when input_bit is a constant 0 (for
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* isapnp_send_key). :)
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*/
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static inline unsigned int isapnp_lfsr_next ( unsigned int lfsr,
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unsigned int input_bit ) {
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register uint8_t lfsr_next;
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lfsr_next = lfsr >> 1;
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lfsr_next |= ( ( ( lfsr ^ lfsr_next ) ^ input_bit ) ) << 7;
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return lfsr_next;
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}
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/**
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* Send the ISAPnP initiation key.
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*
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* Sending the key causes all ISAPnP cards that are currently in the
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* Wait for Key state to transition into the Sleep state.
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*/
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static void isapnp_send_key ( void ) {
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unsigned int i;
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unsigned int lfsr;
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isapnp_delay();
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isapnp_write_address ( 0x00 );
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isapnp_write_address ( 0x00 );
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lfsr = ISAPNP_LFSR_SEED;
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for ( i = 0 ; i < 32 ; i++ ) {
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isapnp_write_address ( lfsr );
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lfsr = isapnp_lfsr_next ( lfsr, 0 );
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}
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}
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/**
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* Compute ISAPnP identifier checksum
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*
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* @v identifier ISAPnP identifier
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* @ret checksum Expected checksum value
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*/
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static unsigned int isapnp_checksum ( struct isapnp_identifier *identifier ) {
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unsigned int i, j;
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unsigned int lfsr;
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unsigned int byte;
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lfsr = ISAPNP_LFSR_SEED;
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for ( i = 0 ; i < 8 ; i++ ) {
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byte = * ( ( ( uint8_t * ) identifier ) + i );
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for ( j = 0 ; j < 8 ; j++ ) {
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lfsr = isapnp_lfsr_next ( lfsr, byte );
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byte >>= 1;
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}
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}
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return lfsr;
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}
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/*
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* Read a byte of resource data from the current location
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*
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* @ret byte Byte of resource data
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*/
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static inline unsigned int isapnp_peek_byte ( void ) {
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unsigned int i;
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/* Wait for data to be ready */
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for ( i = 0 ; i < 20 ; i++ ) {
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if ( isapnp_read_status() & 0x01 ) {
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/* Byte ready - read it */
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return isapnp_read_resourcedata();
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}
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isapnp_delay();
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}
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/* Data never became ready - return 0xff */
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return 0xff;
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}
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/**
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* Read resource data.
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*
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* @v buf Buffer in which to store data, or NULL
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* @v bytes Number of bytes to read
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*
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* Resource data is read from the current location. If #buf is NULL,
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* the data is discarded.
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*/
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static void isapnp_peek ( void *buf, size_t len ) {
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unsigned int i;
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unsigned int byte;
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for ( i = 0 ; i < len ; i++) {
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byte = isapnp_peek_byte();
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if ( buf )
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* ( ( uint8_t * ) buf + i ) = byte;
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}
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}
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/**
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* Find a tag within the resource data.
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*
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* @v wanted_tag The tag that we're looking for
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* @v buf Buffer in which to store the tag's contents
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* @v len Length of buffer
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* @ret rc Return status code
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*
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* Scan through the resource data until we find a particular tag, and
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* read its contents into a buffer.
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*/
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static int isapnp_find_tag ( unsigned int wanted_tag, void *buf, size_t len ) {
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unsigned int tag;
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unsigned int tag_len;
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DBG2 ( "ISAPnP read tag" );
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do {
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tag = isapnp_peek_byte();
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if ( ISAPNP_IS_SMALL_TAG ( tag ) ) {
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tag_len = ISAPNP_SMALL_TAG_LEN ( tag );
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tag = ISAPNP_SMALL_TAG_NAME ( tag );
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} else {
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tag_len = ( isapnp_peek_byte() +
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( isapnp_peek_byte() << 8 ) );
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tag = ISAPNP_LARGE_TAG_NAME ( tag );
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}
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DBG2 ( " %02x (%02x)", tag, tag_len );
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if ( tag == wanted_tag ) {
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if ( len > tag_len )
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len = tag_len;
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isapnp_peek ( buf, len );
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DBG2 ( "\n" );
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return 0;
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} else {
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isapnp_peek ( NULL, tag_len );
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}
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} while ( tag != ISAPNP_TAG_END );
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DBG2 ( "\n" );
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return -ENOENT;
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}
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/**
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* Find specified Logical Device ID tag
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*
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* @v logdev Logical device ID
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* @v logdevid Logical device ID structure to fill in
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* @ret rc Return status code
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*/
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static int isapnp_find_logdevid ( unsigned int logdev,
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struct isapnp_logdevid *logdevid ) {
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unsigned int i;
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int rc;
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for ( i = 0 ; i <= logdev ; i++ ) {
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if ( ( rc = isapnp_find_tag ( ISAPNP_TAG_LOGDEVID, logdevid,
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sizeof ( *logdevid ) ) ) != 0 )
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return rc;
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}
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return 0;
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}
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/**
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* Try isolating ISAPnP cards at the current read port.
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*
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* @ret \>0 Number of ISAPnP cards found
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* @ret 0 There are no ISAPnP cards in the system
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* @ret \<0 A conflict was detected; try a new read port
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* @err None -
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*
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* The state diagram on page 18 (PDF page 24) of the PnP ISA spec
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* gives the best overview of what happens here.
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*/
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static int isapnp_try_isolate ( void ) {
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struct isapnp_identifier identifier;
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unsigned int i, j;
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unsigned int seen_55aa, seen_life;
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unsigned int csn = 0;
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unsigned int data;
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unsigned int byte;
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DBG ( "ISAPnP attempting isolation at read port %04x\n",
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isapnp_read_port );
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/* Place all cards into the Sleep state, whatever state
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* they're currently in.
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*/
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isapnp_wait_for_key();
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isapnp_send_key();
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/* Reset all assigned CSNs */
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isapnp_reset_csn();
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isapnp_delay();
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isapnp_delay();
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/* Place all cards into the Isolation state */
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isapnp_wait_for_key ();
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isapnp_send_key();
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isapnp_wake ( 0x00 );
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/* Set the read port */
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isapnp_set_read_port();
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isapnp_delay();
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while ( 1 ) {
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/* All cards that do not have assigned CSNs are
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* currently in the Isolation state, each time we go
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* through this loop.
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*/
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/* Initiate serial isolation */
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isapnp_serialisolation();
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isapnp_delay();
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/* Read identifier serially via the ISAPnP read port. */
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memset ( &identifier, 0, sizeof ( identifier ) );
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seen_55aa = seen_life = 0;
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for ( i = 0 ; i < 9 ; i++ ) {
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byte = 0;
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for ( j = 0 ; j < 8 ; j++ ) {
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data = isapnp_read_data();
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isapnp_delay();
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data = ( ( data << 8 ) | isapnp_read_data() );
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isapnp_delay();
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byte >>= 1;
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if ( data != 0xffff ) {
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seen_life++;
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if ( data == 0x55aa ) {
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byte |= 0x80;
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seen_55aa++;
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}
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}
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}
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*( ( ( uint8_t * ) &identifier ) + i ) = byte;
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}
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/* If we didn't see any 55aa patterns, stop here */
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if ( ! seen_55aa ) {
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if ( csn ) {
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DBG ( "ISAPnP found no more cards\n" );
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} else {
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if ( seen_life ) {
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DBG ( "ISAPnP saw life but no cards, "
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"trying new read port\n" );
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csn = -1;
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} else {
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DBG ( "ISAPnP saw no signs of life, "
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"abandoning isolation\n" );
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}
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}
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break;
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}
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/* If the checksum was invalid stop here */
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if ( identifier.checksum != isapnp_checksum ( &identifier) ) {
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DBG ( "ISAPnP found malformed card "
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ISAPNP_CARD_ID_FMT "\n with checksum %02x "
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"(should be %02x), trying new read port\n",
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ISAPNP_CARD_ID_DATA ( &identifier ),
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identifier.checksum,
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isapnp_checksum ( &identifier) );
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csn = -1;
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break;
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}
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/* Give the device a CSN */
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csn++;
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DBG ( "ISAPnP found card " ISAPNP_CARD_ID_FMT
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", assigning CSN %02x\n",
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ISAPNP_CARD_ID_DATA ( &identifier ), csn );
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isapnp_write_csn ( csn );
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isapnp_delay();
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|
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/* Send this card back to Sleep and force all cards
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* without a CSN into Isolation state
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*/
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isapnp_wake ( 0x00 );
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|
isapnp_delay();
|
|
}
|
|
|
|
/* Place all cards in Wait for Key state */
|
|
isapnp_wait_for_key();
|
|
|
|
/* Return number of cards found */
|
|
if ( csn > 0 ) {
|
|
DBG ( "ISAPnP found %d cards at read port %04x\n",
|
|
csn, isapnp_read_port );
|
|
}
|
|
return csn;
|
|
}
|
|
|
|
/**
|
|
* Find a valid read port and isolate all ISAPnP cards.
|
|
*
|
|
*/
|
|
static void isapnp_isolate ( void ) {
|
|
for ( isapnp_read_port = ISAPNP_READ_PORT_MIN ;
|
|
isapnp_read_port <= ISAPNP_READ_PORT_MAX ;
|
|
isapnp_read_port += ISAPNP_READ_PORT_STEP ) {
|
|
/* Avoid problematic locations such as the NE2000
|
|
* probe space
|
|
*/
|
|
if ( ( isapnp_read_port >= 0x280 ) &&
|
|
( isapnp_read_port <= 0x380 ) )
|
|
continue;
|
|
|
|
/* If we detect any ISAPnP cards at this location, stop */
|
|
if ( isapnp_try_isolate() >= 0 )
|
|
return;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Activate or deactivate an ISAPnP device.
|
|
*
|
|
* @v isapnp ISAPnP device
|
|
* @v activation True to enable, False to disable the device
|
|
* @ret None -
|
|
* @err None -
|
|
*
|
|
* This routine simply activates the device in its current
|
|
* configuration, or deactivates the device. It does not attempt any
|
|
* kind of resource arbitration.
|
|
*
|
|
*/
|
|
void isapnp_device_activation ( struct isapnp_device *isapnp,
|
|
int activation ) {
|
|
/* Wake the card and select the logical device */
|
|
isapnp_wait_for_key ();
|
|
isapnp_send_key ();
|
|
isapnp_wake ( isapnp->csn );
|
|
isapnp_logicaldevice ( isapnp->logdev );
|
|
|
|
/* Activate/deactivate the logical device */
|
|
isapnp_activate ( activation );
|
|
isapnp_delay();
|
|
|
|
/* Return all cards to Wait for Key state */
|
|
isapnp_wait_for_key ();
|
|
|
|
DBG ( "ISAPnP %s device %02x:%02x\n",
|
|
( activation ? "activated" : "deactivated" ),
|
|
isapnp->csn, isapnp->logdev );
|
|
}
|
|
|
|
/**
|
|
* Probe an ISAPnP device
|
|
*
|
|
* @v isapnp ISAPnP device
|
|
* @ret rc Return status code
|
|
*
|
|
* Searches for a driver for the ISAPnP device. If a driver is found,
|
|
* its probe() routine is called.
|
|
*/
|
|
static int isapnp_probe ( struct isapnp_device *isapnp ) {
|
|
struct isapnp_driver *driver;
|
|
struct isapnp_device_id *id;
|
|
unsigned int i;
|
|
int rc;
|
|
|
|
DBG ( "Adding ISAPnP device %02x:%02x (%04x:%04x (\"%s\") "
|
|
"io %x irq %d)\n", isapnp->csn, isapnp->logdev,
|
|
isapnp->vendor_id, isapnp->prod_id,
|
|
isa_id_string ( isapnp->vendor_id, isapnp->prod_id ),
|
|
isapnp->ioaddr, isapnp->irqno );
|
|
|
|
for ( driver = isapnp_drivers; driver < isapnp_drivers_end; driver++ ){
|
|
for ( i = 0 ; i < driver->id_count ; i++ ) {
|
|
id = &driver->ids[i];
|
|
if ( id->vendor_id != isapnp->vendor_id )
|
|
continue;
|
|
if ( ISA_PROD_ID ( id->prod_id ) !=
|
|
ISA_PROD_ID ( isapnp->prod_id ) )
|
|
continue;
|
|
isapnp->driver = driver;
|
|
isapnp->driver_name = id->name;
|
|
DBG ( "...using driver %s\n", isapnp->driver_name );
|
|
if ( ( rc = driver->probe ( isapnp, id ) ) != 0 ) {
|
|
DBG ( "......probe failed\n" );
|
|
continue;
|
|
}
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
DBG ( "...no driver found\n" );
|
|
return -ENOTTY;
|
|
}
|
|
|
|
/**
|
|
* Remove an ISAPnP device
|
|
*
|
|
* @v isapnp ISAPnP device
|
|
*/
|
|
static void isapnp_remove ( struct isapnp_device *isapnp ) {
|
|
isapnp->driver->remove ( isapnp );
|
|
DBG ( "Removed ISAPnP device %02x:%02x\n",
|
|
isapnp->csn, isapnp->logdev );
|
|
}
|
|
|
|
/**
|
|
* Probe ISAPnP root bus
|
|
*
|
|
* @v rootdev ISAPnP bus root device
|
|
*
|
|
* Scans the ISAPnP bus for devices and registers all devices it can
|
|
* find.
|
|
*/
|
|
static int isapnpbus_probe ( struct root_device *rootdev ) {
|
|
struct isapnp_device *isapnp = NULL;
|
|
struct isapnp_identifier identifier;
|
|
struct isapnp_logdevid logdevid;
|
|
unsigned int csn;
|
|
unsigned int logdev;
|
|
int rc;
|
|
|
|
/* Perform isolation if it hasn't yet been done */
|
|
if ( ! isapnp_read_port )
|
|
isapnp_isolate();
|
|
|
|
for ( csn = 1 ; csn <= 0xff ; csn++ ) {
|
|
for ( logdev = 0 ; logdev <= 0xff ; logdev++ ) {
|
|
|
|
/* Allocate struct isapnp_device */
|
|
if ( ! isapnp )
|
|
isapnp = malloc ( sizeof ( *isapnp ) );
|
|
if ( ! isapnp ) {
|
|
rc = -ENOMEM;
|
|
goto err;
|
|
}
|
|
memset ( isapnp, 0, sizeof ( *isapnp ) );
|
|
isapnp->csn = csn;
|
|
isapnp->logdev = logdev;
|
|
|
|
/* Wake the card */
|
|
isapnp_wait_for_key();
|
|
isapnp_send_key();
|
|
isapnp_wake ( csn );
|
|
|
|
/* Read the card identifier */
|
|
isapnp_peek ( &identifier, sizeof ( identifier ) );
|
|
|
|
/* No card with this CSN; stop here */
|
|
if ( identifier.vendor_id & 0x80 )
|
|
goto done;
|
|
|
|
/* Find the Logical Device ID tag */
|
|
if ( ( rc = isapnp_find_logdevid ( logdev,
|
|
&logdevid ) ) != 0){
|
|
/* No more logical devices; go to next CSN */
|
|
break;
|
|
}
|
|
|
|
/* Select the logical device */
|
|
isapnp_logicaldevice ( logdev );
|
|
|
|
/* Populate struct isapnp_device */
|
|
isapnp->vendor_id = logdevid.vendor_id;
|
|
isapnp->prod_id = logdevid.prod_id;
|
|
isapnp->ioaddr = isapnp_read_iobase ( 0 );
|
|
isapnp->irqno = isapnp_read_irqno ( 0 );
|
|
|
|
/* Return all cards to Wait for Key state */
|
|
isapnp_wait_for_key();
|
|
|
|
/* Add to device hierarchy */
|
|
snprintf ( isapnp->dev.name,
|
|
sizeof ( isapnp->dev.name ),
|
|
"ISAPnP%02x:%02x", csn, logdev );
|
|
isapnp->dev.desc.bus_type = BUS_TYPE_ISAPNP;
|
|
isapnp->dev.desc.vendor = isapnp->vendor_id;
|
|
isapnp->dev.desc.device = isapnp->prod_id;
|
|
isapnp->dev.desc.ioaddr = isapnp->ioaddr;
|
|
isapnp->dev.desc.irq = isapnp->irqno;
|
|
isapnp->dev.parent = &rootdev->dev;
|
|
list_add ( &isapnp->dev.siblings,
|
|
&rootdev->dev.children );
|
|
INIT_LIST_HEAD ( &isapnp->dev.children );
|
|
|
|
/* Look for a driver */
|
|
if ( isapnp_probe ( isapnp ) == 0 ) {
|
|
/* isapnpdev registered, we can drop our ref */
|
|
isapnp = NULL;
|
|
} else {
|
|
/* Not registered; re-use struct */
|
|
list_del ( &isapnp->dev.siblings );
|
|
}
|
|
}
|
|
}
|
|
|
|
done:
|
|
free ( isapnp );
|
|
return 0;
|
|
|
|
err:
|
|
free ( isapnp );
|
|
isapnpbus_remove ( rootdev );
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Remove ISAPnP root bus
|
|
*
|
|
* @v rootdev ISAPnP bus root device
|
|
*/
|
|
static void isapnpbus_remove ( struct root_device *rootdev ) {
|
|
struct isapnp_device *isapnp;
|
|
struct isapnp_device *tmp;
|
|
|
|
list_for_each_entry_safe ( isapnp, tmp, &rootdev->dev.children,
|
|
dev.siblings ) {
|
|
isapnp_remove ( isapnp );
|
|
list_del ( &isapnp->dev.siblings );
|
|
free ( isapnp );
|
|
}
|
|
}
|
|
|
|
/** ISAPnP bus root device driver */
|
|
static struct root_driver isapnp_root_driver = {
|
|
.probe = isapnpbus_probe,
|
|
.remove = isapnpbus_remove,
|
|
};
|
|
|
|
/** ISAPnP bus root device */
|
|
struct root_device isapnp_root_device __root_device = {
|
|
.dev = { .name = "ISAPnP" },
|
|
.driver = &isapnp_root_driver,
|
|
};
|