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 static void aic_recovery_thread(void *arg);
37
38 void
aic_set_recoveryscb(struct aic_softc * aic,struct scb * scb)39 aic_set_recoveryscb(struct aic_softc *aic, struct scb *scb)
40 {
41
42 if ((scb->flags & SCB_RECOVERY_SCB) == 0) {
43 struct scb *list_scb;
44
45 scb->flags |= SCB_RECOVERY_SCB;
46
47 AIC_SCB_DATA(aic)->recovery_scbs++;
48
49 /*
50 * Go through all of our pending SCBs and remove
51 * any scheduled timeouts for them. We will reschedule
52 * them after we've successfully fixed this problem.
53 */
54 LIST_FOREACH(list_scb, &aic->pending_scbs, pending_links) {
55 callout_stop(&scb->io_timer);
56 }
57 }
58 }
59
60 void
aic_platform_timeout(void * arg)61 aic_platform_timeout(void *arg)
62 {
63 struct scb *scb;
64
65 scb = (struct scb *)arg;
66 aic_lock(scb->aic_softc);
67 aic_timeout(scb);
68 aic_unlock(scb->aic_softc);
69 }
70
71 int
aic_spawn_recovery_thread(struct aic_softc * aic)72 aic_spawn_recovery_thread(struct aic_softc *aic)
73 {
74 int error;
75
76 error = aic_kthread_create(aic_recovery_thread, aic,
77 &aic->platform_data->recovery_thread,
78 /*flags*/0, /*altstack*/0, "aic_recovery%d",
79 aic->unit);
80 return (error);
81 }
82
83 /*
84 * Lock is not held on entry.
85 */
86 void
aic_terminate_recovery_thread(struct aic_softc * aic)87 aic_terminate_recovery_thread(struct aic_softc *aic)
88 {
89
90 if (aic->platform_data->recovery_thread == NULL) {
91 return;
92 }
93 aic->flags |= AIC_SHUTDOWN_RECOVERY;
94 wakeup(aic);
95 /*
96 * Sleep on a slightly different location
97 * for this interlock just for added safety.
98 */
99 msleep(aic->platform_data, &aic->platform_data->mtx, PUSER, "thtrm", 0);
100 }
101
102 static void
aic_recovery_thread(void * arg)103 aic_recovery_thread(void *arg)
104 {
105 struct aic_softc *aic;
106
107 aic = (struct aic_softc *)arg;
108 aic_lock(aic);
109 for (;;) {
110
111 if (LIST_EMPTY(&aic->timedout_scbs) != 0
112 && (aic->flags & AIC_SHUTDOWN_RECOVERY) == 0)
113 msleep(aic, &aic->platform_data->mtx, PUSER, "idle", 0);
114
115 if ((aic->flags & AIC_SHUTDOWN_RECOVERY) != 0)
116 break;
117
118 aic_recover_commands(aic);
119 }
120 aic->platform_data->recovery_thread = NULL;
121 wakeup(aic->platform_data);
122 aic_unlock(aic);
123 kproc_exit(0);
124 }
125
126 void
aic_calc_geometry(struct ccb_calc_geometry * ccg,int extended)127 aic_calc_geometry(struct ccb_calc_geometry *ccg, int extended)
128 {
129 cam_calc_geometry(ccg, extended);
130 }
131