FreeBSD-5.3/sys/dev/sym/sym_conf.h
/*
* Device driver optimized for the Symbios/LSI 53C896/53C895A/53C1010
* PCI-SCSI controllers.
*
* Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
*
* This driver also supports the following Symbios/LSI PCI-SCSI chips:
* 53C810A, 53C825A, 53C860, 53C875, 53C876, 53C885, 53C895,
* 53C810, 53C815, 53C825 and the 53C1510D is 53C8XX mode.
*
*
* This driver for FreeBSD-CAM is derived from the Linux sym53c8xx driver.
* Copyright (C) 1998-1999 Gerard Roudier
*
* The sym53c8xx driver is derived from the ncr53c8xx driver that had been
* a port of the FreeBSD ncr driver to Linux-1.2.13.
*
* The original ncr driver has been written for 386bsd and FreeBSD by
* Wolfgang Stanglmeier <wolf@cologne.de>
* Stefan Esser <se@mi.Uni-Koeln.de>
* Copyright (C) 1994 Wolfgang Stanglmeier
*
* The initialisation code, and part of the code that addresses
* FreeBSD-CAM services is based on the aic7xxx driver for FreeBSD-CAM
* written by Justin T. Gibbs.
*
* Other major contributions:
*
* NVRAM detection and reading.
* Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
*
*-----------------------------------------------------------------------------
*
* 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 AUTHORS 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.
*/
/* $FreeBSD: src/sys/dev/sym/sym_conf.h,v 1.8 2001/11/11 18:02:11 groudier Exp $ */
#ifndef SYM_CONF_H
#define SYM_CONF_H
/*-------------------------------------------------------------------
* Static configuration.
*-------------------------------------------------------------------
*/
/*
* Also support early NCR 810, 815 and 825 chips.
*/
#define SYM_CONF_GENERIC_SUPPORT
/*
* Use Normal IO instead of MMIO.
*/
/* #define SYM_CONF_IOMAPPED */
/*
* Max tags for a device (logical unit)
* We use a power of 2, (7) means 2<<7=128
* Maximum is 8 -> 256 tags
*/
#define SYM_CONF_MAX_TAG_ORDER (6)
/*
* Max number of scatter/gather entries for en IO.
* Each entry costs 8 bytes in the internal CCB data structure.
* For now 65 should suffice given the BSD O/Ses capabilities.
*/
#define SYM_CONF_MAX_SG (33)
/*
* Max number of targets.
* Maximum is 16 and you are advised not to change this value.
*/
#define SYM_CONF_MAX_TARGET (16)
/*
* Max number of logical units.
* SPI-2 allows up to 64 logical units, but in real life, target
* that implements more that 7 logical units are pretty rare.
* Anyway, the cost of accepting up to 64 logical unit is low in
* this driver, thus going with the maximum is acceptable.
*/
#define SYM_CONF_MAX_LUN (64)
/*
* Max number of IO control blocks queued to the controller.
* Each entry needs 8 bytes and the queues are allocated contiguously.
* Since we donnot want to allocate more than a page, the theorical
* maximum is PAGE_SIZE/8. For safety, we announce a bit less to the
* access method. :)
* When not supplied, as it is suggested, the driver compute some
* good value for this parameter.
*/
/* #define SYM_CONF_MAX_START (PAGE_SIZE/8 - 16) */
/*
* Support for NVRAM.
*/
#define SYM_CONF_NVRAM_SUPPORT
/* #define SYM_CONF_NVRAM_SUPPORT */
/*
* Support for Immediate Arbitration.
* Not advised.
*/
/* #define SYM_CONF_IARB_SUPPORT */
/*-------------------------------------------------------------------
* Configuration that could be dynamic if it was possible
* to pass arguments to the driver.
*-------------------------------------------------------------------
*/
/*
* HOST default scsi id.
*/
#define SYM_SETUP_HOST_ID 7
/*
* Max synchronous transfers.
*/
#define SYM_SETUP_MIN_SYNC (9)
/*
* Max wide order.
*/
#define SYM_SETUP_MAX_WIDE (1)
/*
* Max SCSI offset.
*/
#define SYM_SETUP_MAX_OFFS (63)
/*
* Default number of tags.
*/
#define SYM_SETUP_MAX_TAG (1<<SYM_CONF_MAX_TAG_ORDER)
/*
* SYMBIOS NVRAM format support.
*/
#define SYM_SETUP_SYMBIOS_NVRAM (1)
/*
* TEKRAM NVRAM format support.
*/
#define SYM_SETUP_TEKRAM_NVRAM (1)
/*
* PCI parity checking.
* It should not be an option, but some poor or broken
* PCI-HOST bridges have been reported to make problems
* when this feature is enabled.
* Setting this option to 0 tells the driver not to
* enable the checking against PCI parity.
*/
#ifndef SYM_SETUP_PCI_PARITY
#define SYM_SETUP_PCI_PARITY (1)
#endif
/*
* SCSI parity checking.
*/
#define SYM_SETUP_SCSI_PARITY (1)
/*
* SCSI activity LED.
*/
#define SYM_SETUP_SCSI_LED (0)
/*
* SCSI High Voltage Differential support.
*
* HVD/LVD/SE capable controllers (895, 895A, 896, 1010)
* report the actual SCSI BUS mode from the STEST4 IO
* register.
*
* But for HVD/SE only capable chips (825a, 875, 885),
* the driver uses some heuristic to probe against HVD.
* Normally, the chip senses the DIFFSENS signal and
* should switch its BUS tranceivers to high impedance
* in situation of the driver having been wrong about
* the actual BUS mode. May-be, the BUS mode probing of
* the driver is safe, but, given that it may be partially
* based on some previous IO register settings, it
* cannot be stated so. Thus, decision has been taken
* to require a user option to be set for the DIFF probing
* to be applied for the 825a, 875 and 885 chips.
*
* This setup option works as follows:
*
* 0 -> HVD only supported for 895, 895A, 896, 1010.
* 1 -> HVD probed for 825A, 875, 885.
* 2 -> HVD assumed for 825A, 875, 885 (not advised).
*/
#ifndef SYM_SETUP_SCSI_DIFF
#define SYM_SETUP_SCSI_DIFF (0)
#endif
/*
* IRQ mode.
*/
#define SYM_SETUP_IRQ_MODE (0)
/*
* Check SCSI BUS signal on reset.
*/
#define SYM_SETUP_SCSI_BUS_CHECK (1)
/*
* Max burst for PCI (1<<value)
* 7 means: (1<<7) = 128 DWORDS.
*/
#define SYM_SETUP_BURST_ORDER (7)
/*
* Only relevant if IARB support configured.
* - Max number of successive settings of IARB hints.
* - Set IARB on arbitration lost.
*/
#define SYM_CONF_IARB_MAX 3
#define SYM_CONF_SET_IARB_ON_ARB_LOST 1
/*
* Returning wrong residuals may make problems.
* When zero, this define tells the driver to
* always return 0 as transfer residual.
* Btw, all my testings of residuals have succeeded.
*/
#define SYM_CONF_RESIDUAL_SUPPORT 1
/*
* Supported maximum number of LUNs to announce to
* the access method.
* The driver supports up to 64 LUNs per target as
* required by SPI-2/SPI-3. However some SCSI devices
* designed prior to these specifications or not being
* conformant may be highly confused when they are
* asked about a LUN > 7.
*/
#ifndef SYM_SETUP_MAX_LUN
#define SYM_SETUP_MAX_LUN (8)
#endif
/*
* Low priority probe map.
*
* This option is used as a bitmap to tell the driver
* about chips that are to be claimed with a low priority
* (-2000) by the probe method. This allows any other driver
* that may return some higher priority value for the same
* chips to take precedence over this driver (sym).
* This option may be used when both the ncr driver and this
* driver are configured.
*
* Bits are to be coded as follows:
* 0x01 -> 810a, 860
* 0x02 -> 825a, 875, 885, 895
* 0x04 -> 895a, 896, 1510d
* 0x08 -> 1010
* 0x40 -> 810, 815, 825
*
* For example, value 5 tells the driver to claim support
* for 810a, 860, 895a, 896 and 1510d with low priority,
* allowing the ncr driver to take precedence if configured.
*/
#ifndef SYM_SETUP_LP_PROBE_MAP
#define SYM_SETUP_LP_PROBE_MAP 0
#endif
#endif /* SYM_CONF_H */