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 /* 50 * Take all queued, but not sent SCBs out of the equation. 51 * Also ensure that no new CCBs are queued to us while we 52 * try to fix this problem. 53 */ 54 if ((scb->io_ctx->ccb_h.status & CAM_RELEASE_SIMQ) == 0) { 55 xpt_freeze_simq(SCB_GET_SIM(aic, scb), /*count*/1); 56 scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ; 57 } 58 59 /* 60 * Go through all of our pending SCBs and remove 61 * any scheduled timeouts for them. We will reschedule 62 * them after we've successfully fixed this problem. 63 */ 64 LIST_FOREACH(list_scb, &aic->pending_scbs, pending_links) { 65 union ccb *ccb; 66 67 ccb = list_scb->io_ctx; 68 untimeout(aic_platform_timeout, list_scb, 69 ccb->ccb_h.timeout_ch); 70 } 71 } 72 } 73 74 void 75 aic_platform_timeout(void *arg) 76 { 77 struct scb *scb; 78 u_long s; 79 80 scb = (struct scb *)arg; 81 aic_lock(scb->aic_softc, &s); 82 aic_timeout(scb); 83 aic_unlock(scb->aic_softc, &s); 84 } 85 86 int 87 aic_spawn_recovery_thread(struct aic_softc *aic) 88 { 89 int error; 90 91 error = aic_kthread_create(aic_recovery_thread, aic, 92 &aic->platform_data->recovery_thread, 93 /*flags*/0, /*altstack*/0, "aic_recovery%d", 94 aic->unit); 95 return (error); 96 } 97 98 /* 99 * Lock is not held on entry. 100 */ 101 void 102 aic_terminate_recovery_thread(struct aic_softc *aic) 103 { 104 u_long s; 105 106 aic_lock(aic, &s); 107 if (aic->platform_data->recovery_thread == NULL) { 108 aic_unlock(aic, &s); 109 return; 110 } 111 aic->flags |= AIC_SHUTDOWN_RECOVERY; 112 wakeup(aic); 113 /* 114 * Sleep on a slightly different location 115 * for this interlock just for added safety. 116 */ 117 tsleep(aic->platform_data, PUSER, "thtrm", 0); 118 aic_unlock(aic, &s); 119 } 120 121 static void 122 aic_recovery_thread(void *arg) 123 { 124 struct aic_softc *aic; 125 u_long s; 126 127 #if __FreeBSD_version >= 500000 128 mtx_lock(&Giant); 129 #endif 130 aic = (struct aic_softc *)arg; 131 aic_lock(aic, &s); 132 for (;;) { 133 134 if (LIST_EMPTY(&aic->timedout_scbs) != 0 135 && (aic->flags & AIC_SHUTDOWN_RECOVERY) == 0) 136 tsleep(aic, PUSER, "idle", 0); 137 138 if ((aic->flags & AIC_SHUTDOWN_RECOVERY) != 0) 139 break; 140 141 aic_unlock(aic, &s); 142 aic_recover_commands(aic); 143 aic_lock(aic, &s); 144 } 145 aic->platform_data->recovery_thread = NULL; 146 wakeup(aic->platform_data); 147 aic_unlock(aic, &s); 148 #if __FreeBSD_version >= 500000 149 mtx_unlock(&Giant); 150 #endif 151 kthread_exit(0); 152 } 153 154 void 155 aic_calc_geometry(struct ccb_calc_geometry *ccg, int extended) 156 { 157 #if __FreeBSD_version >= 500000 158 cam_calc_geometry(ccg, extended); 159 #else 160 uint32_t size_mb; 161 uint32_t secs_per_cylinder; 162 163 size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size); 164 if (size_mb > 1024 && extended) { 165 ccg->heads = 255; 166 ccg->secs_per_track = 63; 167 } else { 168 ccg->heads = 64; 169 ccg->secs_per_track = 32; 170 } 171 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 172 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 173 ccg->ccb_h.status = CAM_REQ_CMP; 174 #endif 175 } 176 177