119 lines
3.7 KiB
C
119 lines
3.7 KiB
C
/*
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* Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
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* of PCI-SCSI IO processors.
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*
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* Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
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*
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* This driver is derived from the Linux sym53c8xx driver.
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* Copyright (C) 1998-2000 Gerard Roudier
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*
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* The sym53c8xx driver is derived from the ncr53c8xx driver that had been
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* a port of the FreeBSD ncr driver to Linux-1.2.13.
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*
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* The original ncr driver has been written for 386bsd and FreeBSD by
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* Wolfgang Stanglmeier <wolf@cologne.de>
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* Stefan Esser <se@mi.Uni-Koeln.de>
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* Copyright (C) 1994 Wolfgang Stanglmeier
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*
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* Other major contributions:
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*
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* NVRAM detection and reading.
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* Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
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*
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*-----------------------------------------------------------------------------
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef SYM_CONF_H
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#define SYM_CONF_H
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#include "sym53c8xx.h"
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/*
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* Max number of targets.
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* Maximum is 16 and you are advised not to change this value.
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*/
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#ifndef SYM_CONF_MAX_TARGET
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#define SYM_CONF_MAX_TARGET (16)
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#endif
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/*
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* Max number of logical units.
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* SPI-2 allows up to 64 logical units, but in real life, target
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* that implements more that 7 logical units are pretty rare.
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* Anyway, the cost of accepting up to 64 logical unit is low in
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* this driver, thus going with the maximum is acceptable.
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*/
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#ifndef SYM_CONF_MAX_LUN
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#define SYM_CONF_MAX_LUN (64)
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#endif
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/*
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* Max number of IO control blocks queued to the controller.
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* Each entry needs 8 bytes and the queues are allocated contiguously.
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* Since we donnot want to allocate more than a page, the theorical
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* maximum is PAGE_SIZE/8. For safety, we announce a bit less to the
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* access method. :)
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* When not supplied, as it is suggested, the driver compute some
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* good value for this parameter.
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*/
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/* #define SYM_CONF_MAX_START (PAGE_SIZE/8 - 16) */
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/*
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* Support for Immediate Arbitration.
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* Not advised.
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*/
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/* #define SYM_CONF_IARB_SUPPORT */
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/*
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* Number of lists for the optimization of the IO timeout handling.
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* Not used under FreeBSD and Linux.
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*/
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#ifndef SYM_CONF_TIMEOUT_ORDER_MAX
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#define SYM_CONF_TIMEOUT_ORDER_MAX (8)
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#endif
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/*
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* Only relevant if IARB support configured.
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* - Max number of successive settings of IARB hints.
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* - Set IARB on arbitration lost.
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*/
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#define SYM_CONF_IARB_MAX 3
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#define SYM_CONF_SET_IARB_ON_ARB_LOST 1
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/*
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* Returning wrong residuals may make problems.
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* When zero, this define tells the driver to
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* always return 0 as transfer residual.
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* Btw, all my testings of residuals have succeeded.
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*/
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#define SYM_SETUP_RESIDUAL_SUPPORT 1
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/*
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* Supported maximum number of LUNs to announce to
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* the access method.
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* The driver supports up to 64 LUNs per target as
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* required by SPI-2/SPI-3. However some SCSI devices
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* designed prior to these specifications or not being
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* conformant may be highly confused when they are
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* asked about a LUN > 7.
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*/
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#ifndef SYM_SETUP_MAX_LUN
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#define SYM_SETUP_MAX_LUN (8)
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#endif
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#endif /* SYM_CONF_H */
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