path: root/drivers/scsi/ipr.h

/*
 * ipr.h -- driver for IBM Power Linux RAID adapters
 *
 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
 *
 * Copyright (C) 2003, 2004 IBM Corporation
 *
 * 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 of the License, 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; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Alan Cox <alan@redhat.com> - Removed several careless u32/dma_addr_t errors
 *				that broke 64bit platforms.
 */

#ifndef _IPR_H
#define _IPR_H

#include <linux/types.h>
#include <linux/completion.h>
#include <linux/list.h>
#include <linux/kref.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>

/*
 * Literals
 */
#define IPR_DRIVER_VERSION "2.1.3"
#define IPR_DRIVER_DATE "(March 29, 2006)"

/*
 * IPR_MAX_CMD_PER_LUN: This defines the maximum number of outstanding
 *	ops per device for devices not running tagged command queuing.
 *	This can be adjusted at runtime through sysfs device attributes.
 */
#define IPR_MAX_CMD_PER_LUN				6

/*
 * IPR_NUM_BASE_CMD_BLKS: This defines the maximum number of
 *	ops the mid-layer can send to the adapter.
 */
#define IPR_NUM_BASE_CMD_BLKS				100

#define IPR_SUBS_DEV_ID_2780	0x0264
#define IPR_SUBS_DEV_ID_5702	0x0266
#define IPR_SUBS_DEV_ID_5703	0x0278
#define IPR_SUBS_DEV_ID_572E  0x028D
#define IPR_SUBS_DEV_ID_573E  0x02D3
#define IPR_SUBS_DEV_ID_573D  0x02D4
#define IPR_SUBS_DEV_ID_571A	0x02C0
#define IPR_SUBS_DEV_ID_571B	0x02BE
#define IPR_SUBS_DEV_ID_571E  0x02BF
#define IPR_SUBS_DEV_ID_571F	0x02D5
#define IPR_SUBS_DEV_ID_572A	0x02C1
#define IPR_SUBS_DEV_ID_572B	0x02C2
#define IPR_SUBS_DEV_ID_575B	0x030D

#define IPR_NAME				"ipr"

/*
 * Return codes
 */
#define IPR_RC_JOB_CONTINUE		1
#define IPR_RC_JOB_RETURN		2

/*
 * IOASCs
 */
#define IPR_IOASC_NR_INIT_CMD_REQUIRED		0x02040200
#define IPR_IOASC_SYNC_REQUIRED			0x023f0000
#define IPR_IOASC_MED_DO_NOT_REALLOC		0x03110C00
#define IPR_IOASC_HW_SEL_TIMEOUT			0x04050000
#define IPR_IOASC_HW_DEV_BUS_STATUS			0x04448500
#define	IPR_IOASC_IOASC_MASK			0xFFFFFF00
#define	IPR_IOASC_SCSI_STATUS_MASK		0x000000FF
#define IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT	0x05240000
#define IPR_IOASC_IR_RESOURCE_HANDLE		0x05250000
#define IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA		0x05258100
#define IPR_IOASA_IR_DUAL_IOA_DISABLED		0x052C8000
#define IPR_IOASC_BUS_WAS_RESET			0x06290000
#define IPR_IOASC_BUS_WAS_RESET_BY_OTHER		0x06298000
#define IPR_IOASC_ABORTED_CMD_TERM_BY_HOST	0x0B5A0000

#define IPR_FIRST_DRIVER_IOASC			0x10000000
#define IPR_IOASC_IOA_WAS_RESET			0x10000001
#define IPR_IOASC_PCI_ACCESS_ERROR			0x10000002

#define IPR_NUM_LOG_HCAMS				2
#define IPR_NUM_CFG_CHG_HCAMS				2
#define IPR_NUM_HCAMS	(IPR_NUM_LOG_HCAMS + IPR_NUM_CFG_CHG_HCAMS)
#define IPR_MAX_NUM_TARGETS_PER_BUS			256
#define IPR_MAX_NUM_LUNS_PER_TARGET			256
#define IPR_MAX_NUM_VSET_LUNS_PER_TARGET	8
#define IPR_VSET_BUS					0xff
#define IPR_IOA_BUS						0xff
#define IPR_IOA_TARGET					0xff
#define IPR_IOA_LUN						0xff
#define IPR_MAX_NUM_BUSES				8
#define IPR_MAX_BUS_TO_SCAN				IPR_MAX_NUM_BUSES

#define IPR_NUM_RESET_RELOAD_RETRIES		3

/* We need resources for HCAMS, IOA reset, IOA bringdown, and ERP */
#define IPR_NUM_INTERNAL_CMD_BLKS	(IPR_NUM_HCAMS + \
                                     ((IPR_NUM_RESET_RELOAD_RETRIES + 1) * 2) + 3)

#define IPR_MAX_COMMANDS		IPR_NUM_BASE_CMD_BLKS
#define IPR_NUM_CMD_BLKS		(IPR_NUM_BASE_CMD_BLKS + \
						IPR_NUM_INTERNAL_CMD_BLKS)

#define IPR_MAX_PHYSICAL_DEVS				192

#define IPR_MAX_SGLIST					64
#define IPR_IOA_MAX_SECTORS				32767
#define IPR_VSET_MAX_SECTORS				512
#define IPR_MAX_CDB_LEN					16

#define IPR_DEFAULT_BUS_WIDTH				16
#define IPR_80MBs_SCSI_RATE		((80 * 10) / (IPR_DEFAULT_BUS_WIDTH / 8))
#define IPR_U160_SCSI_RATE	((160 * 10) / (IPR_DEFAULT_BUS_WIDTH / 8))
#define IPR_U320_SCSI_RATE	((320 * 10) / (IPR_DEFAULT_BUS_WIDTH / 8))
#define IPR_MAX_SCSI_RATE(width) ((320 * 10) / ((width) / 8))

#define IPR_IOA_RES_HANDLE				0xffffffff
#define IPR_INVALID_RES_HANDLE			0
#define IPR_IOA_RES_ADDR				0x00ffffff

/*
 * Adapter Commands
 */
#define IPR_QUERY_RSRC_STATE				0xC2
#define IPR_RESET_DEVICE				0xC3
#define	IPR_RESET_TYPE_SELECT				0x80
#define	IPR_LUN_RESET					0x40
#define	IPR_TARGET_RESET					0x20
#define	IPR_BUS_RESET					0x10
#define IPR_ID_HOST_RR_Q				0xC4
#define IPR_QUERY_IOA_CONFIG				0xC5
#define IPR_CANCEL_ALL_REQUESTS			0xCE
#define IPR_HOST_CONTROLLED_ASYNC			0xCF
#define	IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE	0x01
#define	IPR_HCAM_CDB_OP_CODE_LOG_DATA		0x02
#define IPR_SET_SUPPORTED_DEVICES			0xFB
#define IPR_IOA_SHUTDOWN				0xF7
#define	IPR_WR_BUF_DOWNLOAD_AND_SAVE			0x05

/*
 * Timeouts
 */
#define IPR_SHUTDOWN_TIMEOUT			(ipr_fastfail ? 60 * HZ : 10 * 60 * HZ)
#define IPR_VSET_RW_TIMEOUT			(ipr_fastfail ? 30 * HZ : 2 * 60 * HZ)
#define IPR_ABBREV_SHUTDOWN_TIMEOUT		(10 * HZ)
#define IPR_DEVICE_RESET_TIMEOUT		(ipr_fastfail ? 10 * HZ : 30 * HZ)
#define IPR_CANCEL_ALL_TIMEOUT		(ipr_fastfail ? 10 * HZ : 30 * HZ)
#define IPR_ABORT_TASK_TIMEOUT		(ipr_fastfail ? 10 * HZ : 30 * HZ)
#define IPR_INTERNAL_TIMEOUT			(ipr_fastfail ? 10 * HZ : 30 * HZ)
#define IPR_WRITE_BUFFER_TIMEOUT		(10 * 60 * HZ)
#define IPR_SET_SUP_DEVICE_TIMEOUT		(2 * 60 * HZ)
#define IPR_REQUEST_SENSE_TIMEOUT		(10 * HZ)
#define IPR_OPERATIONAL_TIMEOUT		(5