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/8.0/sys/dev/aic7xxx/aic_osm_lib.c 172836 2007-10-20 23:23:23Z julian $");
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 callout_stop(&scb->io_timer);
61 }
62 }
63 }
64
65 void
66 aic_platform_timeout(void *arg)
67 {
68 struct scb *scb;
69
70 scb = (struct scb *)arg;
71 aic_lock(scb->aic_softc);
72 aic_timeout(scb);
73 aic_unlock(scb->aic_softc);
74 }
75
76 int
77 aic_spawn_recovery_thread(struct aic_softc *aic)
78 {
79 int error;
80
81 error = aic_kthread_create(aic_recovery_thread, aic,
82 &aic->platform_data->recovery_thread,
83 /*flags*/0, /*altstack*/0, "aic_recovery%d",
84 aic->unit);
85 return (error);
86 }
87
88 /*
89 * Lock is not held on entry.
90 */
91 void
92 aic_terminate_recovery_thread(struct aic_softc *aic)
93 {
94
95 if (aic->platform_data->recovery_thread == NULL) {
96 return;
97 }
98 aic->flags |= AIC_SHUTDOWN_RECOVERY;
99 wakeup(aic);
100 /*
101 * Sleep on a slightly different location
102 * for this interlock just for added safety.
103 */
104 msleep(aic->platform_data, &aic->platform_data->mtx, PUSER, "thtrm", 0);
105 }
106
107 static void
108 aic_recovery_thread(void *arg)
109 {
110 struct aic_softc *aic;
111
112 aic = (struct aic_softc *)arg;
113 aic_lock(aic);
114 for (;;) {
115
116 if (LIST_EMPTY(&aic->timedout_scbs) != 0
117 && (aic->flags & AIC_SHUTDOWN_RECOVERY) == 0)
118 msleep(aic, &aic->platform_data->mtx, PUSER, "idle", 0);
119
120 if ((aic->flags & AIC_SHUTDOWN_RECOVERY) != 0)
121 break;
122
123 aic_recover_commands(aic);
124 }
125 aic->platform_data->recovery_thread = NULL;
126 wakeup(aic->platform_data);
127 aic_unlock(aic);
128 kproc_exit(0);
129 }
130
131 void
132 aic_calc_geometry(struct ccb_calc_geometry *ccg, int extended)
133 {
134 #if __FreeBSD_version >= 500000
135 cam_calc_geometry(ccg, extended);
136 #else
137 uint32_t size_mb;
138 uint32_t secs_per_cylinder;
139
140 size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size);
141 if (size_mb > 1024 && extended) {
142 ccg->heads = 255;
143 ccg->secs_per_track = 63;
144 } else {
145 ccg->heads = 64;
146 ccg->secs_per_track = 32;
147 }
148 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
149 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
150 ccg->ccb_h.status = CAM_REQ_CMP;
151 #endif
152 }
153
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