aic_osm_lib.c revision 123579
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#4 $ 33 */ 34 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD: head/sys/dev/aic7xxx/aic_osm_lib.c 123579 2003-12-17 00:02:10Z gibbs $"); 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 /* 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 74void 75aic_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 86int 87aic_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 */ 101void 102aic_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 121void 122aic_calc_geometry(struct ccb_calc_geometry *ccg, int extended) 123{ 124#if __FreeBSD_version >= 500000 125 cam_calc_geometry(ccg, extended); 126#else 127 uint32_t size_mb; 128 uint32_t secs_per_cylinder; 129 130 size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size); 131 if (size_mb > 1024 && extended) { 132 ccg->heads = 255; 133 ccg->secs_per_track = 63; 134 } else { 135 ccg->heads = 64; 136 ccg->secs_per_track = 32; 137 } 138 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 139 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 140 ccg->ccb_h.status = CAM_REQ_CMP; 141#endif 142} 143 144static void 145aic_recovery_thread(void *arg) 146{ 147 struct aic_softc *aic; 148 u_long s; 149 150#if __FreeBSD_version >= 500000 151 mtx_lock(&Giant); 152#endif 153 aic = (struct aic_softc *)arg; 154 aic_lock(aic, &s); 155 while ((aic->flags & AIC_SHUTDOWN_RECOVERY) == 0) { 156 157 while (LIST_EMPTY(&aic->timedout_scbs) != 0) 158 tsleep(aic, PUSER, "idle", 0); 159 aic_unlock(aic, &s); 160 aic_recover_commands(aic); 161 aic_lock(aic, &s); 162 } 163 wakeup(aic->platform_data); 164 aic_unlock(aic, &s); 165#if __FreeBSD_version >= 500000 166 mtx_unlock(&Giant); 167#endif 168 kthread_exit(0); 169} 170