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 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 } 168 169