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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/scsi/sym53c8xx_2/sym53c8xx.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/scsi/sym53c8xx_2/sym53c8xx.h')
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diff --git a/drivers/scsi/sym53c8xx_2/sym53c8xx.h b/drivers/scsi/sym53c8xx_2/sym53c8xx.h
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index 000000000000..481103769729
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@@ -0,0 +1,217 @@
1/*
2 * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
3 * of PCI-SCSI IO processors.
4 *
5 * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
6 *
7 * This driver is derived from the Linux sym53c8xx driver.
8 * Copyright (C) 1998-2000 Gerard Roudier
9 *
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.
12 *
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
17 *
18 * Other major contributions:
19 *
20 * NVRAM detection and reading.
21 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
22 *
23 *-----------------------------------------------------------------------------
24 *
25 * This program is free software; you can redistribute it and/or modify
26 * it under the terms of the GNU General Public License as published by
27 * the Free Software Foundation; either version 2 of the License, or
28 * (at your option) any later version.
29 *
30 * This program is distributed in the hope that it will be useful,
31 * but WITHOUT ANY WARRANTY; without even the implied warranty of
32 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
33 * GNU General Public License for more details.
34 *
35 * You should have received a copy of the GNU General Public License
36 * along with this program; if not, write to the Free Software
37 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
38 */
39
40#ifndef SYM53C8XX_H
41#define SYM53C8XX_H
42
43#include <linux/config.h>
44
45/*
46 * DMA addressing mode.
47 *
48 * 0 : 32 bit addressing for all chips.
49 * 1 : 40 bit addressing when supported by chip.
50 * 2 : 64 bit addressing when supported by chip,
51 * limited to 16 segments of 4 GB -> 64 GB max.
52 */
53#define SYM_CONF_DMA_ADDRESSING_MODE CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE
54
55/*
56 * NVRAM support.
57 */
58#if 1
59#define SYM_CONF_NVRAM_SUPPORT (1)
60#endif
61
62/*
63 * These options are not tunable from 'make config'
64 */
65#if 1
66#define SYM_LINUX_PROC_INFO_SUPPORT
67#define SYM_LINUX_USER_COMMAND_SUPPORT
68#define SYM_LINUX_USER_INFO_SUPPORT
69#define SYM_LINUX_DEBUG_CONTROL_SUPPORT
70#endif
71
72/*
73 * Also handle old NCR chips if not (0).
74 */
75#define SYM_CONF_GENERIC_SUPPORT (1)
76
77/*
78 * Allow tags from 2 to 256, default 8
79 */
80#ifndef CONFIG_SCSI_SYM53C8XX_MAX_TAGS
81#define CONFIG_SCSI_SYM53C8XX_MAX_TAGS (8)
82#endif
83
84#if CONFIG_SCSI_SYM53C8XX_MAX_TAGS < 2
85#define SYM_CONF_MAX_TAG (2)
86#elif CONFIG_SCSI_SYM53C8XX_MAX_TAGS > 256
87#define SYM_CONF_MAX_TAG (256)
88#else
89#define SYM_CONF_MAX_TAG CONFIG_SCSI_SYM53C8XX_MAX_TAGS
90#endif
91
92#ifndef CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS
93#define CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS SYM_CONF_MAX_TAG
94#endif
95
96/*
97 * Anyway, we configure the driver for at least 64 tags per LUN. :)
98 */
99#if SYM_CONF_MAX_TAG <= 64
100#define SYM_CONF_MAX_TAG_ORDER (6)
101#elif SYM_CONF_MAX_TAG <= 128
102#define SYM_CONF_MAX_TAG_ORDER (7)
103#else
104#define SYM_CONF_MAX_TAG_ORDER (8)
105#endif
106
107/*
108 * Max number of SG entries.
109 */
110#define SYM_CONF_MAX_SG (96)
111
112/*
113 * Driver setup structure.
114 *
115 * This structure is initialized from linux config options.
116 * It can be overridden at boot-up by the boot command line.
117 */
118struct sym_driver_setup {
119 u_short max_tag;
120 u_char burst_order;
121 u_char scsi_led;
122 u_char scsi_diff;
123 u_char irq_mode;
124 u_char scsi_bus_check;
125 u_char host_id;
126
127 u_char verbose;
128 u_char settle_delay;
129 u_char use_nvram;
130 u_long excludes[8];
131 char tag_ctrl[100];
132};
133
134#define SYM_SETUP_MAX_TAG sym_driver_setup.max_tag
135#define SYM_SETUP_BURST_ORDER sym_driver_setup.burst_order
136#define SYM_SETUP_SCSI_LED sym_driver_setup.scsi_led
137#define SYM_SETUP_SCSI_DIFF sym_driver_setup.scsi_diff
138#define SYM_SETUP_IRQ_MODE sym_driver_setup.irq_mode
139#define SYM_SETUP_SCSI_BUS_CHECK sym_driver_setup.scsi_bus_check
140#define SYM_SETUP_HOST_ID sym_driver_setup.host_id
141#define boot_verbose sym_driver_setup.verbose
142
143/*
144 * Initial setup.
145 *
146 * Can be overriden at startup by a command line.
147 */
148#define SYM_LINUX_DRIVER_SETUP { \
149 .max_tag = CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS, \
150 .burst_order = 7, \
151 .scsi_led = 1, \
152 .scsi_diff = 1, \
153 .irq_mode = 0, \
154 .scsi_bus_check = 1, \
155 .host_id = 7, \
156 .verbose = 0, \
157 .settle_delay = 3, \
158 .use_nvram = 1, \
159}
160
161extern struct sym_driver_setup sym_driver_setup;
162extern unsigned int sym_debug_flags;
163#define DEBUG_FLAGS sym_debug_flags
164
165/*
166 * Max number of targets.
167 * Maximum is 16 and you are advised not to change this value.
168 */
169#ifndef SYM_CONF_MAX_TARGET
170#define SYM_CONF_MAX_TARGET (16)
171#endif
172
173/*
174 * Max number of logical units.
175 * SPI-2 allows up to 64 logical units, but in real life, target
176 * that implements more that 7 logical units are pretty rare.
177 * Anyway, the cost of accepting up to 64 logical unit is low in
178 * this driver, thus going with the maximum is acceptable.
179 */
180#ifndef SYM_CONF_MAX_LUN
181#define SYM_CONF_MAX_LUN (64)
182#endif
183
184/*
185 * Max number of IO control blocks queued to the controller.
186 * Each entry needs 8 bytes and the queues are allocated contiguously.
187 * Since we donnot want to allocate more than a page, the theorical
188 * maximum is PAGE_SIZE/8. For safety, we announce a bit less to the
189 * access method. :)
190 * When not supplied, as it is suggested, the driver compute some
191 * good value for this parameter.
192 */
193/* #define SYM_CONF_MAX_START (PAGE_SIZE/8 - 16) */
194
195/*
196 * Support for Immediate Arbitration.
197 * Not advised.
198 */
199/* #define SYM_CONF_IARB_SUPPORT */
200
201/*
202 * Only relevant if IARB support configured.
203 * - Max number of successive settings of IARB hints.
204 * - Set IARB on arbitration lost.
205 */
206#define SYM_CONF_IARB_MAX 3
207#define SYM_CONF_SET_IARB_ON_ARB_LOST 1
208
209/*
210 * Returning wrong residuals may make problems.
211 * When zero, this define tells the driver to
212 * always return 0 as transfer residual.
213 * Btw, all my testings of residuals have succeeded.
214 */
215#define SYM_SETUP_RESIDUAL_SUPPORT 1
216
217#endif /* SYM53C8XX_H */