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("$FreeBSD$");
37
38static void	aic_recovery_thread(void *arg);
39
40void
41aic_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			callout_stop(&scb->io_timer);
58		}
59	}
60}
61
62void
63aic_platform_timeout(void *arg)
64{
65	struct	scb *scb;
66
67	scb = (struct scb *)arg;
68	aic_lock(scb->aic_softc);
69	aic_timeout(scb);
70	aic_unlock(scb->aic_softc);
71}
72
73int
74aic_spawn_recovery_thread(struct aic_softc *aic)
75{
76	int error;
77
78	error = aic_kthread_create(aic_recovery_thread, aic,
79			       &aic->platform_data->recovery_thread,
80			       /*flags*/0, /*altstack*/0, "aic_recovery%d",
81			       aic->unit);
82	return (error);
83}
84
85/*
86 * Lock is not held on entry.
87 */
88void
89aic_terminate_recovery_thread(struct aic_softc *aic)
90{
91
92	if (aic->platform_data->recovery_thread == NULL) {
93		return;
94	}
95	aic->flags |= AIC_SHUTDOWN_RECOVERY;
96	wakeup(aic);
97	/*
98	 * Sleep on a slightly different location
99	 * for this interlock just for added safety.
100	 */
101	msleep(aic->platform_data, &aic->platform_data->mtx, PUSER, "thtrm", 0);
102}
103
104static void
105aic_recovery_thread(void *arg)
106{
107	struct aic_softc *aic;
108
109	aic = (struct aic_softc *)arg;
110	aic_lock(aic);
111	for (;;) {
112
113		if (LIST_EMPTY(&aic->timedout_scbs) != 0
114		 && (aic->flags & AIC_SHUTDOWN_RECOVERY) == 0)
115			msleep(aic, &aic->platform_data->mtx, PUSER, "idle", 0);
116
117		if ((aic->flags & AIC_SHUTDOWN_RECOVERY) != 0)
118			break;
119
120		aic_recover_commands(aic);
121	}
122	aic->platform_data->recovery_thread = NULL;
123	wakeup(aic->platform_data);
124	aic_unlock(aic);
125	kproc_exit(0);
126}
127
128void
129aic_calc_geometry(struct ccb_calc_geometry *ccg, int extended)
130{
131#if __FreeBSD_version >= 500000
132	cam_calc_geometry(ccg, extended);
133#else
134	uint32_t size_mb;
135	uint32_t secs_per_cylinder;
136
137	size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size);
138	if (size_mb > 1024 && extended) {
139		ccg->heads = 255;
140		ccg->secs_per_track = 63;
141	} else {
142		ccg->heads = 64;
143		ccg->secs_per_track = 32;
144	}
145	secs_per_cylinder = ccg->heads * ccg->secs_per_track;
146	ccg->cylinders = ccg->volume_size / secs_per_cylinder;
147	ccg->ccb_h.status = CAM_REQ_CMP;
148#endif
149}
150
151