154 lines
4.0 KiB
C
154 lines
4.0 KiB
C
/*-
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* FreeBSD OSM Library for the aic7xxx aic79xx based Adaptec SCSI controllers
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*
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* Copyright (c) 1994-2002 Justin T. Gibbs.
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* Copyright (c) 2001-2003 Adaptec Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU Public License ("GPL").
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic_osm_lib.c#5 $
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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static void aic_recovery_thread(void *arg);
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void
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aic_set_recoveryscb(struct aic_softc *aic, struct scb *scb)
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{
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if ((scb->flags & SCB_RECOVERY_SCB) == 0) {
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struct scb *list_scb;
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scb->flags |= SCB_RECOVERY_SCB;
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AIC_SCB_DATA(aic)->recovery_scbs++;
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/*
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* Go through all of our pending SCBs and remove
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* any scheduled timeouts for them. We will reschedule
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* them after we've successfully fixed this problem.
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*/
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LIST_FOREACH(list_scb, &aic->pending_scbs, pending_links) {
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union ccb *ccb;
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ccb = list_scb->io_ctx;
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callout_stop(&scb->io_timer);
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}
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}
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}
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void
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aic_platform_timeout(void *arg)
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{
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struct scb *scb;
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scb = (struct scb *)arg;
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aic_lock(scb->aic_softc);
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aic_timeout(scb);
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aic_unlock(scb->aic_softc);
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}
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int
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aic_spawn_recovery_thread(struct aic_softc *aic)
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{
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int error;
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error = aic_kthread_create(aic_recovery_thread, aic,
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&aic->platform_data->recovery_thread,
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/*flags*/0, /*altstack*/0, "aic_recovery%d",
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aic->unit);
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return (error);
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}
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/*
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* Lock is not held on entry.
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*/
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void
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aic_terminate_recovery_thread(struct aic_softc *aic)
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{
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if (aic->platform_data->recovery_thread == NULL) {
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return;
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}
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aic->flags |= AIC_SHUTDOWN_RECOVERY;
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wakeup(aic);
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/*
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* Sleep on a slightly different location
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* for this interlock just for added safety.
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*/
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msleep(aic->platform_data, &aic->platform_data->mtx, PUSER, "thtrm", 0);
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}
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static void
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aic_recovery_thread(void *arg)
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{
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struct aic_softc *aic;
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aic = (struct aic_softc *)arg;
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aic_lock(aic);
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for (;;) {
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if (LIST_EMPTY(&aic->timedout_scbs) != 0
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&& (aic->flags & AIC_SHUTDOWN_RECOVERY) == 0)
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msleep(aic, &aic->platform_data->mtx, PUSER, "idle", 0);
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if ((aic->flags & AIC_SHUTDOWN_RECOVERY) != 0)
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break;
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aic_recover_commands(aic);
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}
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aic->platform_data->recovery_thread = NULL;
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wakeup(aic->platform_data);
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aic_unlock(aic);
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kthread_exit(0);
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}
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void
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aic_calc_geometry(struct ccb_calc_geometry *ccg, int extended)
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{
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#if __FreeBSD_version >= 500000
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cam_calc_geometry(ccg, extended);
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#else
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uint32_t size_mb;
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uint32_t secs_per_cylinder;
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size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size);
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if (size_mb > 1024 && extended) {
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ccg->heads = 255;
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ccg->secs_per_track = 63;
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} else {
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ccg->heads = 64;
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ccg->secs_per_track = 32;
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}
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secs_per_cylinder = ccg->heads * ccg->secs_per_track;
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ccg->cylinders = ccg->volume_size / secs_per_cylinder;
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ccg->ccb_h.status = CAM_REQ_CMP;
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#endif
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}
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