aic_osm_lib.c revision 123579
1123579Sgibbs/* 2123579Sgibbs * FreeBSD OSM Library for the aic7xxx aic79xx based Adaptec SCSI controllers 3123579Sgibbs * 4123579Sgibbs * Copyright (c) 1994-2002 Justin T. Gibbs. 5123579Sgibbs * Copyright (c) 2001-2003 Adaptec Inc. 6123579Sgibbs * All rights reserved. 7123579Sgibbs * 8123579Sgibbs * Redistribution and use in source and binary forms, with or without 9123579Sgibbs * modification, are permitted provided that the following conditions 10123579Sgibbs * are met: 11123579Sgibbs * 1. Redistributions of source code must retain the above copyright 12123579Sgibbs * notice, this list of conditions, and the following disclaimer, 13123579Sgibbs * without modification. 14123579Sgibbs * 2. The name of the author may not be used to endorse or promote products 15123579Sgibbs * derived from this software without specific prior written permission. 16123579Sgibbs * 17123579Sgibbs * Alternatively, this software may be distributed under the terms of the 18123579Sgibbs * GNU Public License ("GPL"). 19123579Sgibbs * 20123579Sgibbs * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21123579Sgibbs * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22123579Sgibbs * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23123579Sgibbs * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 24123579Sgibbs * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25123579Sgibbs * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26123579Sgibbs * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27123579Sgibbs * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28123579Sgibbs * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29123579Sgibbs * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30123579Sgibbs * SUCH DAMAGE. 31123579Sgibbs * 32123579Sgibbs * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic_osm_lib.c#4 $ 33123579Sgibbs */ 34123579Sgibbs 35123579Sgibbs#include <sys/cdefs.h> 36123579Sgibbs__FBSDID("$FreeBSD: head/sys/dev/aic7xxx/aic_osm_lib.c 123579 2003-12-17 00:02:10Z gibbs $"); 37123579Sgibbs 38123579Sgibbsstatic void aic_recovery_thread(void *arg); 39123579Sgibbs 40123579Sgibbsvoid 41123579Sgibbsaic_set_recoveryscb(struct aic_softc *aic, struct scb *scb) 42123579Sgibbs{ 43123579Sgibbs 44123579Sgibbs if ((scb->flags & SCB_RECOVERY_SCB) == 0) { 45123579Sgibbs struct scb *list_scb; 46123579Sgibbs 47123579Sgibbs scb->flags |= SCB_RECOVERY_SCB; 48123579Sgibbs 49123579Sgibbs /* 50123579Sgibbs * Take all queued, but not sent SCBs out of the equation. 51123579Sgibbs * Also ensure that no new CCBs are queued to us while we 52123579Sgibbs * try to fix this problem. 53123579Sgibbs */ 54123579Sgibbs if ((scb->io_ctx->ccb_h.status & CAM_RELEASE_SIMQ) == 0) { 55123579Sgibbs xpt_freeze_simq(SCB_GET_SIM(aic, scb), /*count*/1); 56123579Sgibbs scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ; 57123579Sgibbs } 58123579Sgibbs 59123579Sgibbs /* 60123579Sgibbs * Go through all of our pending SCBs and remove 61123579Sgibbs * any scheduled timeouts for them. We will reschedule 62123579Sgibbs * them after we've successfully fixed this problem. 63123579Sgibbs */ 64123579Sgibbs LIST_FOREACH(list_scb, &aic->pending_scbs, pending_links) { 65123579Sgibbs union ccb *ccb; 66123579Sgibbs 67123579Sgibbs ccb = list_scb->io_ctx; 68123579Sgibbs untimeout(aic_platform_timeout, list_scb, 69123579Sgibbs ccb->ccb_h.timeout_ch); 70123579Sgibbs } 71123579Sgibbs } 72123579Sgibbs} 73123579Sgibbs 74123579Sgibbsvoid 75123579Sgibbsaic_platform_timeout(void *arg) 76123579Sgibbs{ 77123579Sgibbs struct scb *scb; 78123579Sgibbs u_long s; 79123579Sgibbs 80123579Sgibbs scb = (struct scb *)arg; 81123579Sgibbs aic_lock(scb->aic_softc, &s); 82123579Sgibbs aic_timeout(scb); 83123579Sgibbs aic_unlock(scb->aic_softc, &s); 84123579Sgibbs} 85123579Sgibbs 86123579Sgibbsint 87123579Sgibbsaic_spawn_recovery_thread(struct aic_softc *aic) 88123579Sgibbs{ 89123579Sgibbs int error; 90123579Sgibbs 91123579Sgibbs error = aic_kthread_create(aic_recovery_thread, aic, 92123579Sgibbs &aic->platform_data->recovery_thread, 93123579Sgibbs /*flags*/0, /*altstack*/0, "aic_recovery%d", 94123579Sgibbs aic->unit); 95123579Sgibbs return (error); 96123579Sgibbs} 97123579Sgibbs 98123579Sgibbs/* 99123579Sgibbs * Lock is not held on entry. 100123579Sgibbs */ 101123579Sgibbsvoid 102123579Sgibbsaic_terminate_recovery_thread(struct aic_softc *aic) 103123579Sgibbs{ 104123579Sgibbs u_long s; 105123579Sgibbs 106123579Sgibbs aic_lock(aic, &s); 107123579Sgibbs if (aic->platform_data->recovery_thread == NULL) { 108123579Sgibbs aic_unlock(aic, &s); 109123579Sgibbs return; 110123579Sgibbs } 111123579Sgibbs aic->flags |= AIC_SHUTDOWN_RECOVERY; 112123579Sgibbs wakeup(aic); 113123579Sgibbs /* 114123579Sgibbs * Sleep on a slightly different location 115123579Sgibbs * for this interlock just for added safety. 116123579Sgibbs */ 117123579Sgibbs tsleep(aic->platform_data, PUSER, "thtrm", 0); 118123579Sgibbs aic_unlock(aic, &s); 119123579Sgibbs} 120123579Sgibbs 121123579Sgibbsvoid 122123579Sgibbsaic_calc_geometry(struct ccb_calc_geometry *ccg, int extended) 123123579Sgibbs{ 124123579Sgibbs#if __FreeBSD_version >= 500000 125123579Sgibbs cam_calc_geometry(ccg, extended); 126123579Sgibbs#else 127123579Sgibbs uint32_t size_mb; 128123579Sgibbs uint32_t secs_per_cylinder; 129123579Sgibbs 130123579Sgibbs size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size); 131123579Sgibbs if (size_mb > 1024 && extended) { 132123579Sgibbs ccg->heads = 255; 133123579Sgibbs ccg->secs_per_track = 63; 134123579Sgibbs } else { 135123579Sgibbs ccg->heads = 64; 136123579Sgibbs ccg->secs_per_track = 32; 137123579Sgibbs } 138123579Sgibbs secs_per_cylinder = ccg->heads * ccg->secs_per_track; 139123579Sgibbs ccg->cylinders = ccg->volume_size / secs_per_cylinder; 140123579Sgibbs ccg->ccb_h.status = CAM_REQ_CMP; 141123579Sgibbs#endif 142123579Sgibbs} 143123579Sgibbs 144123579Sgibbsstatic void 145123579Sgibbsaic_recovery_thread(void *arg) 146123579Sgibbs{ 147123579Sgibbs struct aic_softc *aic; 148123579Sgibbs u_long s; 149123579Sgibbs 150123579Sgibbs#if __FreeBSD_version >= 500000 151123579Sgibbs mtx_lock(&Giant); 152123579Sgibbs#endif 153123579Sgibbs aic = (struct aic_softc *)arg; 154123579Sgibbs aic_lock(aic, &s); 155123579Sgibbs while ((aic->flags & AIC_SHUTDOWN_RECOVERY) == 0) { 156123579Sgibbs 157123579Sgibbs while (LIST_EMPTY(&aic->timedout_scbs) != 0) 158123579Sgibbs tsleep(aic, PUSER, "idle", 0); 159123579Sgibbs aic_unlock(aic, &s); 160123579Sgibbs aic_recover_commands(aic); 161123579Sgibbs aic_lock(aic, &s); 162123579Sgibbs } 163123579Sgibbs wakeup(aic->platform_data); 164123579Sgibbs aic_unlock(aic, &s); 165123579Sgibbs#if __FreeBSD_version >= 500000 166123579Sgibbs mtx_unlock(&Giant); 167123579Sgibbs#endif 168123579Sgibbs kthread_exit(0); 169123579Sgibbs} 170