c19e61b2f2
PCI SCSI controllers. This driver also supports the following Symbios/LSI PCI SCSI chips: 53C810A, 53C825A, 53C860, 53C875, 53C876, 53C885, 53C895. However, it does NOT support earlier chips as the following ones: 53C810, 53C815, 53C825. See README.sym for more details. Submitted-by: Gerard Roudier <groudier@club-internet.fr>
229 lines
6.4 KiB
C
229 lines
6.4 KiB
C
/*
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* Device driver optimized for the Symbios/LSI 53C896/53C895A/53C1010
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* PCI-SCSI controllers.
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*
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* Copyright (C) 1999 Gerard Roudier <groudier@club-internet.fr>
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*
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* This driver also supports the following Symbios/LSI PCI-SCSI chips:
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* 53C810A, 53C825A, 53C860, 53C875, 53C876, 53C885, 53C895.
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*
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* but does not support earlier chips as the following ones:
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* 53C810, 53C815, 53C825.
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*
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* This driver for FreeBSD-CAM is derived from the Linux sym53c8xx driver.
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* Copyright (C) 1998-1999 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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* The initialisation code, and part of the code that addresses
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* FreeBSD-CAM services is based on the aic7xxx driver for FreeBSD-CAM
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* written by Justin T. Gibbs.
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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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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef SYM_CONF_H
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#define SYM_CONF_H
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/*-------------------------------------------------------------------
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* Static configuration.
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*-------------------------------------------------------------------
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*/
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/*
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* Support for earliest LSI53C1010 boards.
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* Commercial chips will be fixed, and then the
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* corresponding code will get useless.
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*/
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/* #define SYMCONF_BROKEN_U3EN_SUPPORT */
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/*
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* Use Normal IO instead of MMIO.
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*/
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/* #define SYMCONF_IOMAPPED */
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/*
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* Max tags for a device (logical unit)
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* We use a power of 2, (7) means 2<<7=128
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* Maximum is 8 -> 256 tags
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*/
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#define SYMCONF_MAX_TAG_ORDER (6)
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/*
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* Max number of scatter/gather entries for en IO.
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* Each entry costs 8 bytes in the internal CCB data structure.
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* For now 65 should suffice given the BSD O/Ses capabilities.
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*/
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#define SYMCONF_MAX_SG (33)
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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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#define SYMCONF_MAX_TARGET (16)
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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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#define SYMCONF_MAX_LUN (8)
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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 SYMCONF_MAX_START (PAGE_SIZE/8 - 16) */
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/*
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* Support for NVRAM.
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*/
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#define SYMCONF_NVRAM_SUPPORT
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/* #define SYMCONF_DEBUG_SUPPORT */
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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 SYMCONF_IARB_SUPPORT */
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/*
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* Not needed on FreeBSD, since the system allocator
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* does provide naturally aligned addresses.
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*/
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#define SYMCONF_USE_INTERNAL_ALLOCATOR
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/*-------------------------------------------------------------------
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* Configuration that could be dynamic if it was possible
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* to pass arguments to the driver.
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*-------------------------------------------------------------------
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*/
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/*
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* HOST default scsi id.
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*/
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#define SYMSETUP_HOST_ID 7
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/*
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* Max synchronous transfers.
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*/
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#define SYMSETUP_MIN_SYNC (9)
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/*
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* Max wide order.
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*/
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#define SYMSETUP_MAX_WIDE (1)
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/*
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* Max SCSI offset.
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*/
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#define SYMSETUP_MAX_OFFS (64)
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/*
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* Default number of tags.
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*/
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#define SYMSETUP_MAX_TAG (64)
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/*
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* SYMBIOS NVRAM format support.
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*/
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#define SYMSETUP_SYMBIOS_NVRAM (1)
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/*
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* TEKRAM NVRAM format support.
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*/
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#define SYMSETUP_TEKRAM_NVRAM (1)
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/*
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* PCI parity checking.
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*/
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#define SYMSETUP_PCI_PARITY (1)
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/*
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* SCSI parity checking.
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*/
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#define SYMSETUP_SCSI_PARITY (1)
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/*
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* SCSI activity LED.
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*/
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#define SYMSETUP_SCSI_LED (0)
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/*
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* SCSI differential.
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*/
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#define SYMSETUP_SCSI_DIFF (0)
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/*
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* IRQ mode.
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*/
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#define SYMSETUP_IRQ_MODE (0)
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/*
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* Check SCSI BUS signal on reset.
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*/
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#define SYMSETUP_SCSI_BUS_CHECK (1)
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/*
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* Max burst for PCI (1<<value)
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* 7 means: (1<<7) = 128 DWORDS.
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*/
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#define SYMSETUP_BURST_ORDER (7)
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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 SYMCONF_IARB_MAX 3
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#define SYMCONF_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 SYMCONF_RESIDUAL_SUPPORT 1
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#endif /* SYM_CONF_H */
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