1 /*-
2 * FreeBSD OSM Library for the aic7xxx aic79xx based Adaptec SCSI controllers
3 *
4 * Copyright (c) 1994-2002 Justin T. Gibbs.
5 * Copyright (c) 2001-2003 Adaptec Inc.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * Alternatively, this software may be distributed under the terms of the
18 * GNU Public License ("GPL").
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
24 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic_osm_lib.c#5 $
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD: releng/6.2/sys/dev/aic7xxx/aic_osm_lib.c 139749 2005-01-06 01:43:34Z imp $");
37
38 static void aic_recovery_thread(void *arg);
39
40 void
41 aic_set_recoveryscb(struct aic_softc *aic, struct scb *scb)
42 {
43
44 if ((scb->flags & SCB_RECOVERY_SCB) == 0) {
45 struct scb *list_scb;
46
47 scb->flags |= SCB_RECOVERY_SCB;
48
49 AIC_SCB_DATA(aic)->recovery_scbs++;
50
51 /*
52 * Go through all of our pending SCBs and remove
53 * any scheduled timeouts for them. We will reschedule
54 * them after we've successfully fixed this problem.
55 */
56 LIST_FOREACH(list_scb, &aic->pending_scbs, pending_links) {
57 union ccb *ccb;
58
59 ccb = list_scb->io_ctx;
60 untimeout(aic_platform_timeout, list_scb,
61 ccb->ccb_h.timeout_ch);
62 }
63 }
64 }
65
66 void
67 aic_platform_timeout(void *arg)
68 {
69 struct scb *scb;
70 u_long s;
71
72 scb = (struct scb *)arg;
73 aic_lock(scb->aic_softc, &s);
74 aic_timeout(scb);
75 aic_unlock(scb->aic_softc, &s);
76 }
77
78 int
79 aic_spawn_recovery_thread(struct aic_softc *aic)
80 {
81 int error;
82
83 error = aic_kthread_create(aic_recovery_thread, aic,
84 &aic->platform_data->recovery_thread,
85 /*flags*/0, /*altstack*/0, "aic_recovery%d",
86 aic->unit);
87 return (error);
88 }
89
90 /*
91 * Lock is not held on entry.
92 */
93 void
94 aic_terminate_recovery_thread(struct aic_softc *aic)
95 {
96 u_long s;
97
98 aic_lock(aic, &s);
99 if (aic->platform_data->recovery_thread == NULL) {
100 aic_unlock(aic, &s);
101 return;
102 }
103 aic->flags |= AIC_SHUTDOWN_RECOVERY;
104 wakeup(aic);
105 /*
106 * Sleep on a slightly different location
107 * for this interlock just for added safety.
108 */
109 tsleep(aic->platform_data, PUSER, "thtrm", 0);
110 aic_unlock(aic, &s);
111 }
112
113 static void
114 aic_recovery_thread(void *arg)
115 {
116 struct aic_softc *aic;
117 u_long s;
118
119 #if __FreeBSD_version >= 500000
120 mtx_lock(&Giant);
121 #endif
122 aic = (struct aic_softc *)arg;
123 aic_lock(aic, &s);
124 for (;;) {
125
126 if (LIST_EMPTY(&aic->timedout_scbs) != 0
127 && (aic->flags & AIC_SHUTDOWN_RECOVERY) == 0)
128 tsleep(aic, PUSER, "idle", 0);
129
130 if ((aic->flags & AIC_SHUTDOWN_RECOVERY) != 0)
131 break;
132
133 aic_unlock(aic, &s);
134 aic_recover_commands(aic);
135 aic_lock(aic, &s);
136 }
137 aic->platform_data->recovery_thread = NULL;
138 wakeup(aic->platform_data);
139 aic_unlock(aic, &s);
140 #if __FreeBSD_version >= 500000
141 mtx_unlock(&Giant);
142 #endif
143 kthread_exit(0);
144 }
145
146 void
147 aic_calc_geometry(struct ccb_calc_geometry *ccg, int extended)
148 {
149 #if __FreeBSD_version >= 500000
150 cam_calc_geometry(ccg, extended);
151 #else
152 uint32_t size_mb;
153 uint32_t secs_per_cylinder;
154
155 size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size);
156 if (size_mb > 1024 && extended) {
157 ccg->heads = 255;
158 ccg->secs_per_track = 63;
159 } else {
160 ccg->heads = 64;
161 ccg->secs_per_track = 32;
162 }
163 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
164 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
165 ccg->ccb_h.status = CAM_REQ_CMP;
166 #endif
167 }
168
Cache object: 51cb121c5b3a72c021a6eee99948caaf
|