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Diffstat (limited to 'sys/dev/sym/sym_conf.h')
| -rw-r--r-- | sys/dev/sym/sym_conf.h | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/sys/dev/sym/sym_conf.h b/sys/dev/sym/sym_conf.h new file mode 100644 index 0000000..4154b6c --- /dev/null +++ b/sys/dev/sym/sym_conf.h @@ -0,0 +1,293 @@ +/* + * 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. + */ + +/* $FreeBSD$ */ + +#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 */ |
