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 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 callout_stop(&scb->io_timer); 58 } 59 } 60 } 61 62 void 63 aic_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 73 int 74 aic_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 */ 88 void 89 aic_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 } 103 104 static void 105 aic_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 } 127 128 void 129 aic_calc_geometry(struct ccb_calc_geometry *ccg, int extended) 130 { 131 cam_calc_geometry(ccg, extended); 132 } 133