/*
 * dc395x.c
 *
 * Device Driver for Tekram DC395(U/UW/F), DC315(U)
 * PCI SCSI Bus Master Host Adapter
 * (SCSI chip set used Tekram ASIC TRM-S1040)
 *
 * Authors:
 *  C.L. Huang <ching@tekram.com.tw>
 *  Erich Chen <erich@tekram.com.tw>
 *  (C) Copyright 1995-1999 Tekram Technology Co., Ltd.
 *
 *  Kurt Garloff <garloff@suse.de>
 *  (C) 1999-2000 Kurt Garloff
 *
 *  Oliver Neukum <oliver@neukum.name>
 *  Ali Akcaagac <aliakc@web.de>
 *  Jamie Lenehan <lenehan@twibble.org>
 *  (C) 2003
 *
 * License: GNU GPL
 *
 *************************************************************************
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ************************************************************************
 */
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/delay.h>
#include <linux/ctype.h>
#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/pci.h>
#include <linux/list.h>
#include <linux/vmalloc.h>
#include <asm/io.h>

#include <scsi/scsi.h>
#include <scsi/scsicam.h>	/* needed for scsicam_bios_param */
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>

#include "dc395x.h"

#define DC395X_NAME	"dc395x"
#define DC395X_BANNER	"Tekram DC395(U/UW/F), DC315(U) - ASIC TRM-S1040"
#define DC395X_VERSION	"v2.05, 2004/03/08"

/*---------------------------------------------------------------------------
                                  Features
 ---------------------------------------------------------------------------*/
/*
 * Set to disable parts of the driver
 */
/*#define DC395x_NO_DISCONNECT*/
/*#define DC395x_NO_TAGQ*/
/*#define DC395x_NO_SYNC*/
/*#define DC395x_NO_WIDE*/

/*---------------------------------------------------------------------------
                                  Debugging
 ---------------------------------------------------------------------------*/
/*
 * Types of debugging that can be enabled and disabled
 */
#define DBG_KG		0x0001
#define DBG_0		0x0002
#define DBG_1		0x0004
#define DBG_SG		0x0020
#define DBG_FIFO	0x0040
#define DBG_PIO		0x0080


/*
 * Set set of things to output debugging for.
 * Undefine to remove all debugging
 */
/*#define DEBUG_MASK (DBG_0|DBG_1|DBG_SG|DBG_FIFO|DBG_PIO)*/
/*#define  DEBUG_MASK	DBG_0*/


/*
 * Output a kernel mesage at the specified level and append the
 * driver name and a ": " to the start of the message
 */
#define dprintkl(level, format, arg...)  \
    printk(level DC395X_NAME ": " format , ## arg)


#ifdef DEBUG_MASK
/*
 * print a debug message - this is formated with KERN_DEBUG, then the
 * driver name followed by a ": " and then the message is output. 
 * This also checks that the specified debug level is enabled before
 * outputing the message
 */
#define dprintkdbg(type, format, arg...) \
	do { \
		if ((type) & (DEBUG_MASK)) \
			dprintkl(KERN_DEBUG , format , ## arg); \
	} while (0)

/*
 * Check if the specified type of debugging is enabled
 */
#define debug_enabled(type)	((DEBUG_MASK) & (type))

#else
/*
 * No debugging. Do nothing
 */
#define dprintkdbg(type, format, arg...) \
	do {} while (0)
#define debug_enabled(type)	(0)

#endif


#ifndef PCI_VENDOR_ID_TEKRAM
#define PCI_VENDOR_ID_TEKRAM                    0x1DE1	/* Vendor ID    */
#endif
#ifndef PCI_DEVICE_ID_TEKRAM_TRMS1040
#define PCI_DEVICE_ID_TEKRAM_TRMS1040           0x0391	/* Device ID    */
#endif


#define DC395x_LOCK_IO(dev,flags)		spin_lock_irqsave(((struct Scsi_Host *)dev)->host_lock, flags)
#define DC395x_UNLOCK_IO(dev,flags)		spin_unlock_irqrestore(((struct Scsi_Host *)dev)->host_lock, flags)

#define DC395x_read8(acb,address)		(u8)(inb(acb->io_port_base + (address)))
#define DC395x_read16(acb,address)		(u16)(inw(acb->io_port_base + (address)))
#define DC395x_read32(acb,address)		(u32)(inl(acb->io_port_base + (address)))
#define DC395x_write8(acb,address,value)	outb((value), acb->io_port_base + (address))
#define DC395x_write16(acb,address,value)	outw((value), acb->io_port_base + (address))
#define DC395x_write32(acb,address,value)	outl((value), acb->io_port_base + (address))

/* cmd->result */
#define RES_TARGET		0x000000FF	/* Target State */