/* $Id: aha1542.c,v 1.1 1992/07/24 06:27:38 root Exp root $
* linux/kernel/aha1542.c
*
* Copyright (C) 1992 Tommy Thorn
* Copyright (C) 1993, 1994, 1995 Eric Youngdale
*
* Modified by Eric Youngdale
* Use request_irq and request_dma to help prevent unexpected conflicts
* Set up on-board DMA controller, such that we do not have to
* have the bios enabled to use the aha1542.
* Modified by David Gentzel
* Don't call request_dma if dma mask is 0 (for BusLogic BT-445S VL-Bus
* controller).
* Modified by Matti Aarnio
* Accept parameters from LILO cmd-line. -- 1-Oct-94
* Modified by Mike McLagan <mike.mclagan@linux.org>
* Recognise extended mode on AHA1542CP, different bit than 1542CF
* 1-Jan-97
* Modified by Bjorn L. Thordarson and Einar Thor Einarsson
* Recognize that DMA0 is valid DMA channel -- 13-Jul-98
* Modified by Chris Faulhaber <jedgar@fxp.org>
* Added module command-line options
* 19-Jul-99
* Modified by Adam Fritzler
* Added proper detection of the AHA-1640 (MCA, now deleted)
*/
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/proc_fs.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/isa.h>
#include <linux/pnp.h>
#include <linux/blkdev.h>
#include <linux/slab.h>
#include <asm/dma.h>
#include <asm/io.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
#include "aha1542.h"
#include <linux/stat.h>
#ifdef DEBUG
#define DEB(x) x
#else
#define DEB(x)
#endif
/*
static const char RCSid[] = "$Header: /usr/src/linux/kernel/blk_drv/scsi/RCS/aha1542.c,v 1.1 1992/07/24 06:27:38 root Exp root $";
*/
/* The adaptec can be configured for quite a number of addresses, but
I generally do not want the card poking around at random. We allow
two addresses - this allows people to use the Adaptec with a Midi
card, which also used 0x330 -- can be overridden with LILO! */
#define MAXBOARDS 4 /* Increase this and the sizes of the
arrays below, if you need more.. */
/* Boards 3,4 slots are reserved for ISAPnP scans */
static unsigned int bases[MAXBOARDS] = {0x330, 0x334, 0