patch-2.4.15 linux/drivers/scsi/sym53c8xx_2/sym_conf.h

• Lines: 330
• Date: Fri Nov 9 15:22:54 2001
• Orig file: v2.4.14/linux/drivers/scsi/sym53c8xx_2/sym_conf.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.14/linux/drivers/scsi/sym53c8xx_2/sym_conf.h linux/drivers/scsi/sym53c8xx_2/sym_conf.h
@@ -0,0 +1,329 @@
+/*
+ * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family 
+ * of PCI-SCSI IO processors.
+ *
+ * Copyright (C) 1999-2001  Gerard Roudier <groudier@free.fr>
+ *
+ * This driver is derived from the Linux sym53c8xx driver.
+ * Copyright (C) 1998-2000  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
+ *
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Where this Software is combined with software released under the terms of 
+ * the GNU Public License ("GPL") and the terms of the GPL would require the 
+ * combined work to also be released under the terms of the GPL, the terms
+ * and conditions of this License will apply in addition to those of the
+ * GPL with the exception of any terms or conditions of this License that
+ * conflict with, or are expressly prohibited by, the GPL.
+ *
+ * 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.
+ */
+
+#ifndef SYM_CONF_H
+#define SYM_CONF_H
+
+/*-------------------------------------------------------------------
+ *  Static configuration.
+ *-------------------------------------------------------------------
+ */
+
+/*
+ *  Also support early NCR 810, 815 and 825 chips.
+ */
+#ifndef SYM_CONF_GENERIC_SUPPORT
+#define SYM_CONF_GENERIC_SUPPORT	(1)
+#endif
+
+/*
+ *  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
+ */
+#ifndef SYM_CONF_MAX_TAG_ORDER
+#define SYM_CONF_MAX_TAG_ORDER	(6)
+#endif
+
+/*
+ *  Max number of scatter/gather entries for en IO.
+ *  Each entry costs 8 bytes in the internal CCB data structure.
+ */
+#ifndef SYM_CONF_MAX_SG
+#define SYM_CONF_MAX_SG		(33)
+#endif
+
+/*
+ *  Max number of targets.
+ *  Maximum is 16 and you are advised not to change this value.
+ */
+#ifndef SYM_CONF_MAX_TARGET
+#define SYM_CONF_MAX_TARGET	(16)
+#endif
+
+/*
+ *  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.
+ */
+#ifndef SYM_CONF_MAX_LUN
+#define SYM_CONF_MAX_LUN	(64)
+#endif
+
+/*
+ *  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.
+ */
+#ifndef SYM_CONF_NVRAM_SUPPORT
+#define SYM_CONF_NVRAM_SUPPORT		(1)
+#endif
+
+/*
+ *  Support for Immediate Arbitration.
+ *  Not advised.
+ */
+/* #define SYM_CONF_IARB_SUPPORT */
+
+/*
+ *  Support for some PCI fix-ups (or assumed so).
+ */
+#define SYM_CONF_PCI_FIX_UP
+
+/*
+ *  Number of lists for the optimization of the IO timeout handling.
+ *  Not used under FreeBSD and Linux.
+ */
+#ifndef SYM_CONF_TIMEOUT_ORDER_MAX
+#define SYM_CONF_TIMEOUT_ORDER_MAX	(8)
+#endif
+
+/*
+ *  How the driver handles DMA addressing of user data.
+ *  0 :	32 bit addressing
+ *  1 :	40 bit addressing
+ *  2 :	64 bit addressing using segment registers
+ */
+#ifndef SYM_CONF_DMA_ADDRESSING_MODE
+#define SYM_CONF_DMA_ADDRESSING_MODE	(0)
+#endif
+
+/*-------------------------------------------------------------------
+ *  Configuration that could be dynamic if it was possible 
+ *  to pass arguments to the driver.
+ *-------------------------------------------------------------------
+ */
+
+/*
+ *  HOST default scsi id.
+ */
+#ifndef SYM_SETUP_HOST_ID
+#define SYM_SETUP_HOST_ID	7
+#endif
+
+/*
+ *  Max synchronous transfers.
+ */
+#ifndef SYM_SETUP_MIN_SYNC
+#define SYM_SETUP_MIN_SYNC	(9)
+#endif
+
+/*
+ *  Max wide order.
+ */
+#ifndef SYM_SETUP_MAX_WIDE
+#define SYM_SETUP_MAX_WIDE	(1)
+#endif
+
+/*
+ *  Max SCSI offset.
+ */
+#ifndef SYM_SETUP_MAX_OFFS
+#define SYM_SETUP_MAX_OFFS	(63)
+#endif
+
+/*
+ *  Default number of tags.
+ */
+#ifndef SYM_SETUP_MAX_TAG
+#define SYM_SETUP_MAX_TAG	(1<<SYM_CONF_MAX_TAG_ORDER)
+#endif
+
+/*
+ *  SYMBIOS NVRAM format support.
+ */
+#ifndef SYM_SETUP_SYMBIOS_NVRAM
+#define SYM_SETUP_SYMBIOS_NVRAM	(1)
+#endif
+
+/*
+ *  TEKRAM NVRAM format support.
+ */
+#ifndef SYM_SETUP_TEKRAM_NVRAM
+#define SYM_SETUP_TEKRAM_NVRAM	(1)
+#endif
+
+/*
+ *  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	(2)
+#endif
+
+/*
+ *  SCSI parity checking.
+ */
+#ifndef SYM_SETUP_SCSI_PARITY
+#define SYM_SETUP_SCSI_PARITY	(1)
+#endif
+
+/*
+ *  SCSI activity LED.
+ */
+#ifndef SYM_SETUP_SCSI_LED
+#define SYM_SETUP_SCSI_LED	(0)
+#endif
+
+/*
+ *  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.
+ */
+#ifndef SYM_SETUP_IRQ_MODE
+#define SYM_SETUP_IRQ_MODE	(0)
+#endif
+
+/*
+ *  Check SCSI BUS signal on reset.
+ */
+#ifndef SYM_SETUP_SCSI_BUS_CHECK
+#define SYM_SETUP_SCSI_BUS_CHECK (1)
+#endif
+
+/*
+ *  Max burst for PCI (1<<value)
+ *  7 means: (1<<7) = 128 DWORDS.
+ */
+#ifndef SYM_SETUP_BURST_ORDER
+#define SYM_SETUP_BURST_ORDER	(7)
+#endif
+
+/*
+ *  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_SETUP_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
+
+/*
+ *  Bits indicating what kind of fix-ups we want.
+ *
+ *  Bit 0 (1) : cache line size configuration register.
+ *  Bit 1 (2) : MWI bit in command register.
+ *  Bit 2 (4) : latency timer if seems too low.
+ */
+
+#ifndef SYM_SETUP_PCI_FIX_UP
+#define SYM_SETUP_PCI_FIX_UP (3)
+#endif
+
+#endif /* SYM_CONF_H */