2 * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
3 * of PCI-SCSI IO processors.
5 * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
7 * This driver is derived from the Linux sym53c8xx driver.
8 * Copyright (C) 1998-2000 Gerard Roudier
10 * The sym53c8xx driver is derived from the ncr53c8xx driver that had been
11 * a port of the FreeBSD ncr driver to Linux-1.2.13.
13 * The original ncr driver has been written for 386bsd and FreeBSD by
14 * Wolfgang Stanglmeier <wolf@cologne.de>
15 * Stefan Esser <se@mi.Uni-Koeln.de>
16 * Copyright (C) 1994 Wolfgang Stanglmeier
18 * Other major contributions:
20 * NVRAM detection and reading.
21 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
23 *-----------------------------------------------------------------------------
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26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the above copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. The name of the author may not be used to endorse or promote products
31 * derived from this software without specific prior written permission.
33 * Where this Software is combined with software released under the terms of
34 * the GNU Public License ("GPL") and the terms of the GPL would require the
35 * combined work to also be released under the terms of the GPL, the terms
36 * and conditions of this License will apply in addition to those of the
37 * GPL with the exception of any terms or conditions of this License that
38 * conflict with, or are expressly prohibited by, the GPL.
40 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 #include "sym53c8xx.h"
59 * Max number of targets.
60 * Maximum is 16 and you are advised not to change this value.
62 #ifndef SYM_CONF_MAX_TARGET
63 #define SYM_CONF_MAX_TARGET (16)
67 * Max number of logical units.
68 * SPI-2 allows up to 64 logical units, but in real life, target
69 * that implements more that 7 logical units are pretty rare.
70 * Anyway, the cost of accepting up to 64 logical unit is low in
71 * this driver, thus going with the maximum is acceptable.
73 #ifndef SYM_CONF_MAX_LUN
74 #define SYM_CONF_MAX_LUN (64)
78 * Max number of IO control blocks queued to the controller.
79 * Each entry needs 8 bytes and the queues are allocated contiguously.
80 * Since we donnot want to allocate more than a page, the theorical
81 * maximum is PAGE_SIZE/8. For safety, we announce a bit less to the
83 * When not supplied, as it is suggested, the driver compute some
84 * good value for this parameter.
86 /* #define SYM_CONF_MAX_START (PAGE_SIZE/8 - 16) */
89 * Support for Immediate Arbitration.
92 /* #define SYM_CONF_IARB_SUPPORT */
95 * Number of lists for the optimization of the IO timeout handling.
96 * Not used under FreeBSD and Linux.
98 #ifndef SYM_CONF_TIMEOUT_ORDER_MAX
99 #define SYM_CONF_TIMEOUT_ORDER_MAX (8)
103 * Only relevant if IARB support configured.
104 * - Max number of successive settings of IARB hints.
105 * - Set IARB on arbitration lost.
107 #define SYM_CONF_IARB_MAX 3
108 #define SYM_CONF_SET_IARB_ON_ARB_LOST 1
111 * Returning wrong residuals may make problems.
112 * When zero, this define tells the driver to
113 * always return 0 as transfer residual.
114 * Btw, all my testings of residuals have succeeded.
116 #define SYM_SETUP_RESIDUAL_SUPPORT 1
119 * Supported maximum number of LUNs to announce to
121 * The driver supports up to 64 LUNs per target as
122 * required by SPI-2/SPI-3. However some SCSI devices
123 * designed prior to these specifications or not being
124 * conformant may be highly confused when they are
125 * asked about a LUN > 7.
127 #ifndef SYM_SETUP_MAX_LUN
128 #define SYM_SETUP_MAX_LUN (8)
131 #endif /* SYM_CONF_H */