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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
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/*- * 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: release/9.1.0/sys/dev/sym/sym_conf.h 237186 2012-06-17 09:42:56Z marius $ */ #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) /* * DMA boundary * We need to ensure 16 MB boundaries not to be crossed during DMA of * each segment, due to some chips being flawed. */ #define SYM_CONF_DMA_BOUNDARY (1UL << 24) /* * Max number of scatter/gather entries for an I/O. * Each entry costs 8 bytes in the internal CCB data structure. * We use at most 33 segments but also no more than required for handling * MAXPHYS. */ #define SYM_CONF_MAX_SG (MIN(33, (MAXPHYS / PAGE_SIZE) + 1)) /* * 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 */