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/* $Id$
*
* parport.h: ia32-specific parport initialisation
*
* Copyright (C) 1999 Tim Waugh <tim@cyberelk.demon.co.uk>
*
* This file should only be included by drivers/parport/parport_pc.c.
*/
#ifndef _ASM_PARPORT_H
#define _ASM_PARPORT_H 1
#include <linux/config.h>
/* Maximum number of ports to support. It is useless to set this greater
than PARPORT_MAX (in <linux/parport.h>). */
#define PARPORT_PC_MAX_PORTS 8
/* If parport_cs (PCMCIA) is managing ports for us, we'll need the
* probing routines forever; otherwise we can lose them at boot time. */
#ifdef CONFIG_PARPORT_PC_PCMCIA
#define __maybe_initdata
#define __maybe_init
#else
#define __maybe_initdata __initdata
#define __maybe_init __init
#endif
static int __maybe_init parport_pc_init_pci(int irq, int dma);
static int user_specified __maybe_initdata = 0;
int __init
parport_pc_init(int *io, int *io_hi, int *irq, int *dma)
{
int count = 0, i = 0;
if (io && *io) {
/* Only probe the ports we were given. */
user_specified = 1;
do {
if (!*io_hi) *io_hi = 0x400 + *io;
if (parport_pc_probe_port(*(io++), *(io_hi++),
*(irq++), *(dma++)))
count++;
} while (*io && (++i < PARPORT_PC_MAX_PORTS));
} else {
/* Probe all the likely ports. */
if (parport_pc_probe_port(0x3bc, 0x7bc, irq[0], dma[0]))
count++;
if (parport_pc_probe_port(0x378, 0x778, irq[0], dma[0]))
count++;
if (parport_pc_probe_port(0x278, 0x678, irq[0], dma[0]))
count++;
count += parport_pc_init_pci (irq[0], dma[0]);
}
return count;
}
#endif /* !(_ASM_PARPORT_H) */
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