path: root/drivers/scsi/a100u2w.c

/*
 * Initio A100 device driver for Linux.
 *
 * Copyright (c) 1994-1998 Initio Corporation
 * Copyright (c) 2003-2004 Christoph Hellwig
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * --------------------------------------------------------------------------
 *
 * 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,
 *    without modification, immediately at the beginning of the file.
 * 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.
 *
 * Where this Software is combined with software released under the terms of 
 * the GNU General Public License ("GPL") and the terms of the GPL would require the 
 * combined work to also be released under the terms of the GPL, the terms
 * and conditions of this License will apply in addition to those of the
 * GPL with the exception of any terms or conditions of this License that
 * conflict with, or are expressly prohibited by, the GPL.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
 */

/*
 * Revision History:
 * 07/02/98 hl	- v.91n Initial drivers.
 * 09/14/98 hl - v1.01 Support new Kernel.
 * 09/22/98 hl - v1.01a Support reset.
 * 09/24/98 hl - v1.01b Fixed reset.
 * 10/05/98 hl - v1.02 split the source code and release.
 * 12/19/98 bv - v1.02a Use spinlocks for 2.1.95 and up
 * 01/31/99 bv - v1.02b Use mdelay instead of waitForPause
 * 08/08/99 bv - v1.02c Use waitForPause again.
 * 06/25/02 Doug Ledford <dledford@redhat.com> - v1.02d
 *          - Remove limit on number of controllers
 *          - Port to DMA mapping API
 *          - Clean up interrupt handler registration
 *          - Fix memory leaks
 *          - Fix allocation of scsi host structs and private data
 * 11/18/03 Christoph Hellwig <hch@lst.de>
 *	    - Port to new probing API
 *	    - Fix some more leaks in init failure cases
 * 9/28/04 Christoph Hellwig <hch@lst.de>
 *	    - merge the two source files
 *	    - remove internal queueing code
 */

#include <linux/module.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/spinlock.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/slab.h>

#include <asm/io.h>
#include <asm/irq.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>

#include "a100u2w.h"


#define JIFFIES_TO_MS(t) ((t) * 1000 / HZ)
#define MS_TO_JIFFIES(j) ((j * HZ) / 1000)

static ORC_SCB *orc_alloc_scb(ORC_HCS * hcsp);
static void inia100SCBPost(BYTE * pHcb, BYTE * pScb);

static NVRAM nvram, *nvramp = &nvram;
static UCHAR dftNvRam[64] =
{
/*----------header -------------*/
	0x01,			/* 0x00: Sub System Vendor ID 0 */
	0x11,			/* 0x01: Sub System Vendor ID 1 */
	0x60,			/* 0x02: Sub System ID 0        */
	0x10,			/* 0x03: Sub System ID 1        */
	0x00,			/* 0x04: SubClass               */
	0x01,			/* 0x05: Vendor ID 0            */
	0x11,			/* 0x06: Vendor ID 1            */
	0x60,			/* 0x07: Device ID 0            */
	0x10,			/* 0x08: Device ID 1            */
	0x00,			/* 0x09: Reserved               */
	0x00,			/* 0x0A: Reserved               */
	0x01,			/* 0x0B: Revision of Data Structure     */
				/* -- Host Adapter Structure --- */
	0x01,			/* 0x0C: Number Of SCSI Channel */
	0x01,			/* 0x0D: BIOS Configuration 1   */
	0x00,			/* 0x0E: BIOS Configuration 2   */
	0x00,			/* 0x0F: BIOS Configuration 3   */
				/* --- SCSI Channel 0 Configuration --- */
	0x07,			/* 0x10: H/A ID                 */
	0x83,			/* 0x11: Channel Configuration  */
	0x20,			/* 0x12: MAX TAG per target     */
	0x0A,			/* 0x13: SCSI Reset Recovering time     */
	0x00,			/* 0x14: Channel Configuration4 */
	0x00,			/* 0x15: Channel Configuration5 */
				/* SCSI Channel 0 Target Configuration  */
				/* 0x16-0x25                    */
	0xC8, 0xC8, 0xC8, 0xC8, 0xC8, 0xC8, 0xC8, 0xC8,
	0xC8, 0xC8, 0xC8, 0xC8, 0xC8, 0xC8, 0xC8, 0xC8,
				/* --- SCSI Channel 1 Configuration --- */
	0x07,			/* 0x26: H/A ID                 */
	0x83,			/* 0x27: Channel Configuration  */
	0x20,			/* 0x28: MAX TAG per target     */
	0x0A,			/* 0x29: SCSI Reset Recovering time     */
	0x00,			/* 0x2A: Channel Configuration4 */
	0x00,			/* 0x2B: Channel Configuration5 */
				/* SCSI Channel 1 Target Configuration  */
				/* 0x2C-0x3B