4824 lines
112 KiB
C
4824 lines
112 KiB
C
/* $NecBSD: scsi_low.c,v 1.24.10.8 2001/06/26 07:39:44 honda Exp $ */
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/* $NetBSD$ */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#define SCSI_LOW_STATICS
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#define SCSI_LOW_DEBUG
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#define SCSI_LOW_NEGOTIATE_BEFORE_SENSE
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#define SCSI_LOW_START_UP_CHECK
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/* #define SCSI_LOW_INFO_DETAIL */
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/* #define SCSI_LOW_QCLEAR_AFTER_CA */
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/* #define SCSI_LOW_FLAGS_QUIRKS_OK */
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#ifdef __NetBSD__
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#define SCSI_LOW_TARGET_OPEN
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#endif /* __NetBSD__ */
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#ifdef __FreeBSD__
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#define SCSI_LOW_FLAGS_QUIRKS_OK
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#endif /* __FreeBSD__ */
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/*-
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* [NetBSD for NEC PC-98 series]
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* Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
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* NetBSD/pc98 porting staff. All rights reserved.
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* Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
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* Naofumi HONDA. All rights reserved.
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*
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* [Ported for FreeBSD CAM]
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* Copyright (c) 2000, 2001
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* MITSUNAGA Noriaki, NOKUBI Hirotaka and TAKAHASHI Yoshihiro.
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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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. 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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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* <On the nexus establishment>
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* When our host is reselected,
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* nexus establish processes are little complicated.
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* Normal steps are followings:
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* 1) Our host selected by target => target nexus (slp->sl_Tnexus)
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* 2) Identify msgin => lun nexus (slp->sl_Lnexus)
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* 3) Qtag msg => ccb nexus (slp->sl_Qnexus)
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*/
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#include "opt_ddb.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#ifdef __FreeBSD__
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#if __FreeBSD_version >= 500001
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#include <sys/bio.h>
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#else
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#include <machine/clock.h>
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#endif
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#endif /* __FreeBSD__ */
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#include <sys/buf.h>
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#include <sys/queue.h>
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#include <sys/malloc.h>
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#include <sys/errno.h>
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#ifdef __NetBSD__
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#include <sys/device.h>
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#include <vm/vm.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <machine/dvcfg.h>
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#include <dev/cons.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsipiconf.h>
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#include <dev/scsipi/scsipi_disk.h>
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsiconf.h>
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#include <sys/scsiio.h>
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#include <i386/Cbus/dev/scsi_low.h>
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#endif /* __NetBSD__ */
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#ifdef __FreeBSD__
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_sim.h>
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#include <cam/cam_debug.h>
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#include <cam/cam_periph.h>
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#include <cam/cam_xpt_periph.h>
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#include <cam/scsi/scsi_all.h>
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#include <cam/scsi/scsi_message.h>
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#include <cam/scsi/scsi_low.h>
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#include <sys/cons.h>
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#endif /* __FreeBSD__ */
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/**************************************************************
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* Constants
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**************************************************************/
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#define SCSI_LOW_POLL_HZ 1000
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/* functions return values */
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#define SCSI_LOW_START_NO_QTAG 0
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#define SCSI_LOW_START_QTAG 1
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#define SCSI_LOW_DONE_COMPLETE 0
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#define SCSI_LOW_DONE_RETRY 1
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/* internal disk flags */
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#define SCSI_LOW_DISK_DISC 0x00000001
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#define SCSI_LOW_DISK_QTAG 0x00000002
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#define SCSI_LOW_DISK_LINK 0x00000004
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#define SCSI_LOW_DISK_PARITY 0x00000008
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#define SCSI_LOW_DISK_SYNC 0x00010000
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#define SCSI_LOW_DISK_WIDE_16 0x00020000
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#define SCSI_LOW_DISK_WIDE_32 0x00040000
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#define SCSI_LOW_DISK_WIDE (SCSI_LOW_DISK_WIDE_16 | SCSI_LOW_DISK_WIDE_32)
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#define SCSI_LOW_DISK_LFLAGS 0x0000ffff
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#define SCSI_LOW_DISK_TFLAGS 0xffff0000
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static MALLOC_DEFINE(M_SCSILOW, "SCSI low", "SCSI low buffers");
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/**************************************************************
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* Declarations
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**************************************************************/
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/* static */ void scsi_low_info(struct scsi_low_softc *, struct targ_info *, u_char *);
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static void scsi_low_engage(void *);
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static struct slccb *scsi_low_establish_ccb(struct targ_info *, struct lun_info *, scsi_low_tag_t);
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static int scsi_low_done(struct scsi_low_softc *, struct slccb *);
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static int scsi_low_setup_done(struct scsi_low_softc *, struct slccb *);
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static void scsi_low_bus_release(struct scsi_low_softc *, struct targ_info *);
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static void scsi_low_twiddle_wait(void);
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static struct lun_info *scsi_low_alloc_li(struct targ_info *, int, int);
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static struct targ_info *scsi_low_alloc_ti(struct scsi_low_softc *, int);
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static void scsi_low_calcf_lun(struct lun_info *);
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static void scsi_low_calcf_target(struct targ_info *);
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static void scsi_low_calcf_show(struct lun_info *);
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static void scsi_low_reset_nexus(struct scsi_low_softc *, int);
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static void scsi_low_reset_nexus_target(struct scsi_low_softc *, struct targ_info *, int);
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static void scsi_low_reset_nexus_lun(struct scsi_low_softc *, struct lun_info *, int);
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static int scsi_low_init(struct scsi_low_softc *, u_int);
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static void scsi_low_start(struct scsi_low_softc *);
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static void scsi_low_free_ti(struct scsi_low_softc *);
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static int scsi_low_alloc_qtag(struct slccb *);
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static int scsi_low_dealloc_qtag(struct slccb *);
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static int scsi_low_enqueue(struct scsi_low_softc *, struct targ_info *, struct lun_info *, struct slccb *, u_int, u_int);
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static int scsi_low_message_enqueue(struct scsi_low_softc *, struct targ_info *, struct lun_info *, u_int);
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static void scsi_low_unit_ready_cmd(struct slccb *);
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static void scsi_low_timeout(void *);
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static int scsi_low_timeout_check(struct scsi_low_softc *);
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#ifdef SCSI_LOW_START_UP_CHECK
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static int scsi_low_start_up(struct scsi_low_softc *);
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#endif /* SCSI_LOW_START_UP_CHECK */
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static int scsi_low_abort_ccb(struct scsi_low_softc *, struct slccb *);
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static struct slccb *scsi_low_revoke_ccb(struct scsi_low_softc *, struct slccb *, int);
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int scsi_low_version_major = 2;
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int scsi_low_version_minor = 17;
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static struct scsi_low_softc_tab sl_tab = LIST_HEAD_INITIALIZER(sl_tab);
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/**************************************************************
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* Debug, Run test and Statics
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**************************************************************/
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#ifdef SCSI_LOW_INFO_DETAIL
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#define SCSI_LOW_INFO(slp, ti, s) scsi_low_info((slp), (ti), (s))
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#else /* !SCSI_LOW_INFO_DETAIL */
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#define SCSI_LOW_INFO(slp, ti, s) printf("%s: %s\n", (slp)->sl_xname, (s))
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#endif /* !SCSI_LOW_INFO_DETAIL */
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#ifdef SCSI_LOW_STATICS
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static struct scsi_low_statics {
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int nexus_win;
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int nexus_fail;
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int nexus_disconnected;
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int nexus_reselected;
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int nexus_conflict;
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} scsi_low_statics;
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#endif /* SCSI_LOW_STATICS */
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#ifdef SCSI_LOW_DEBUG
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#define SCSI_LOW_DEBUG_DONE 0x00001
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#define SCSI_LOW_DEBUG_DISC 0x00002
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#define SCSI_LOW_DEBUG_SENSE 0x00004
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#define SCSI_LOW_DEBUG_CALCF 0x00008
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#define SCSI_LOW_DEBUG_ACTION 0x10000
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int scsi_low_debug = 0;
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#define SCSI_LOW_MAX_ATTEN_CHECK 32
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#define SCSI_LOW_ATTEN_CHECK 0x0001
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#define SCSI_LOW_CMDLNK_CHECK 0x0002
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#define SCSI_LOW_ABORT_CHECK 0x0004
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#define SCSI_LOW_NEXUS_CHECK 0x0008
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int scsi_low_test = 0;
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int scsi_low_test_id = 0;
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static void scsi_low_test_abort(struct scsi_low_softc *, struct targ_info *, struct lun_info *);
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static void scsi_low_test_cmdlnk(struct scsi_low_softc *, struct slccb *);
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static void scsi_low_test_atten(struct scsi_low_softc *, struct targ_info *, u_int);
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#define SCSI_LOW_DEBUG_TEST_GO(fl, id) \
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((scsi_low_test & (fl)) != 0 && (scsi_low_test_id & (1 << (id))) == 0)
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#define SCSI_LOW_DEBUG_GO(fl, id) \
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((scsi_low_debug & (fl)) != 0 && (scsi_low_test_id & (1 << (id))) == 0)
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#endif /* SCSI_LOW_DEBUG */
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/**************************************************************
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* CCB
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**************************************************************/
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GENERIC_CCB_STATIC_ALLOC(scsi_low, slccb)
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GENERIC_CCB(scsi_low, slccb, ccb_chain)
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/**************************************************************
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* Inline functions
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**************************************************************/
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#define SCSI_LOW_INLINE static __inline
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SCSI_LOW_INLINE void scsi_low_activate_qtag(struct slccb *);
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SCSI_LOW_INLINE void scsi_low_deactivate_qtag(struct slccb *);
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SCSI_LOW_INLINE void scsi_low_ccb_message_assert(struct slccb *, u_int);
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SCSI_LOW_INLINE void scsi_low_ccb_message_exec(struct scsi_low_softc *, struct slccb *);
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SCSI_LOW_INLINE void scsi_low_ccb_message_retry(struct slccb *);
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SCSI_LOW_INLINE void scsi_low_ccb_message_clear(struct slccb *);
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SCSI_LOW_INLINE void scsi_low_init_msgsys(struct scsi_low_softc *, struct targ_info *);
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SCSI_LOW_INLINE void
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scsi_low_activate_qtag(cb)
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struct slccb *cb;
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{
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struct lun_info *li = cb->li;
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if (cb->ccb_tag != SCSI_LOW_UNKTAG)
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return;
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li->li_nqio ++;
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cb->ccb_tag = cb->ccb_otag;
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}
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SCSI_LOW_INLINE void
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scsi_low_deactivate_qtag(cb)
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struct slccb *cb;
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{
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struct lun_info *li = cb->li;
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if (cb->ccb_tag == SCSI_LOW_UNKTAG)
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return;
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li->li_nqio --;
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cb->ccb_tag = SCSI_LOW_UNKTAG;
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}
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SCSI_LOW_INLINE void
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scsi_low_ccb_message_exec(slp, cb)
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struct scsi_low_softc *slp;
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struct slccb *cb;
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{
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scsi_low_assert_msg(slp, cb->ti, cb->ccb_msgoutflag, 0);
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cb->ccb_msgoutflag = 0;
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}
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SCSI_LOW_INLINE void
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scsi_low_ccb_message_assert(cb, msg)
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struct slccb *cb;
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u_int msg;
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{
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cb->ccb_msgoutflag = cb->ccb_omsgoutflag = msg;
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}
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SCSI_LOW_INLINE void
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scsi_low_ccb_message_retry(cb)
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struct slccb *cb;
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{
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cb->ccb_msgoutflag = cb->ccb_omsgoutflag;
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}
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SCSI_LOW_INLINE void
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scsi_low_ccb_message_clear(cb)
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struct slccb *cb;
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{
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cb->ccb_msgoutflag = 0;
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}
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SCSI_LOW_INLINE void
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scsi_low_init_msgsys(slp, ti)
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struct scsi_low_softc *slp;
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struct targ_info *ti;
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{
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ti->ti_msginptr = 0;
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ti->ti_emsgflags = ti->ti_msgflags = ti->ti_omsgflags = 0;
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SCSI_LOW_DEASSERT_ATN(slp);
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SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_NULL);
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}
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/*=============================================================
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* START OF OS switch (All OS depend fucntions should be here)
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=============================================================*/
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/* common os depend utitlities */
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#define SCSI_LOW_CMD_RESIDUAL_CHK 0x0001
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#define SCSI_LOW_CMD_ORDERED_QTAG 0x0002
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#define SCSI_LOW_CMD_ABORT_WARNING 0x0004
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static u_int8_t scsi_low_cmd_flags[256] = {
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/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
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/*0*/ 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 5, 0, 0, 0, 0, 0,
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/*1*/ 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0,
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/*2*/ 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 5, 0, 0, 0, 5, 5,
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/*3*/ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 5,
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};
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struct scsi_low_error_code {
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int error_bits;
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int error_code;
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};
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static struct slccb *scsi_low_find_ccb(struct scsi_low_softc *, u_int, u_int, void *);
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static int scsi_low_translate_error_code(struct slccb *, struct scsi_low_error_code *);
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static struct slccb *
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scsi_low_find_ccb(slp, target, lun, osdep)
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struct scsi_low_softc *slp;
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u_int target, lun;
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void *osdep;
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{
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struct targ_info *ti;
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struct lun_info *li;
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struct slccb *cb;
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ti = slp->sl_ti[target];
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li = scsi_low_alloc_li(ti, lun, 0);
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if (li == NULL)
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return NULL;
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if ((cb = slp->sl_Qnexus) != NULL && cb->osdep == osdep)
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return cb;
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for (cb = TAILQ_FIRST(&slp->sl_start); cb != NULL;
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cb = TAILQ_NEXT(cb, ccb_chain))
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{
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if (cb->osdep == osdep)
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return cb;
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}
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for (cb = TAILQ_FIRST(&li->li_discq); cb != NULL;
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cb = TAILQ_NEXT(cb, ccb_chain))
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{
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if (cb->osdep == osdep)
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return cb;
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}
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return NULL;
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}
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static int
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scsi_low_translate_error_code(cb, tp)
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struct slccb *cb;
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struct scsi_low_error_code *tp;
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{
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if (cb->ccb_error == 0)
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return tp->error_code;
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for (tp ++; (cb->ccb_error & tp->error_bits) == 0; tp ++)
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;
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return tp->error_code;
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}
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#ifdef SCSI_LOW_INTERFACE_XS
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/**************************************************************
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* SCSI INTERFACE (XS)
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**************************************************************/
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#define SCSI_LOW_MINPHYS 0x10000
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#define SCSI_LOW_MALLOC(size) malloc((size), M_SCSILOW, M_NOWAIT)
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#define SCSI_LOW_FREE(pt) free((pt), M_SCSILOW)
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#define SCSI_LOW_ALLOC_CCB(flags) scsi_low_get_ccb((flags))
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#define SCSI_LOW_XS_POLL_HZ 1000
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static int scsi_low_poll_xs(struct scsi_low_softc *, struct slccb *);
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static void scsi_low_scsi_minphys_xs(struct buf *);
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#ifdef SCSI_LOW_TARGET_OPEN
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static int scsi_low_target_open(struct scsipi_link *, struct cfdata *);
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#endif /* SCSI_LOW_TARGET_OPEN */
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static int scsi_low_scsi_cmd_xs(struct scsipi_xfer *);
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static int scsi_low_enable_xs(void *, int);
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static int scsi_low_ioctl_xs(struct scsipi_link *, u_long, caddr_t, int, struct proc *);
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static int scsi_low_attach_xs(struct scsi_low_softc *);
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static int scsi_low_world_start_xs(struct scsi_low_softc *);
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static int scsi_low_dettach_xs(struct scsi_low_softc *);
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static int scsi_low_ccb_setup_xs(struct scsi_low_softc *, struct slccb *);
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static int scsi_low_done_xs(struct scsi_low_softc *, struct slccb *);
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static void scsi_low_timeout_xs(struct scsi_low_softc *, int, int);
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static u_int scsi_low_translate_quirks_xs(u_int);
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static void scsi_low_setup_quirks_xs(struct targ_info *, struct lun_info *, u_int);
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struct scsi_low_osdep_funcs scsi_low_osdep_funcs_xs = {
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scsi_low_attach_xs,
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scsi_low_world_start_xs,
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scsi_low_dettach_xs,
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scsi_low_ccb_setup_xs,
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scsi_low_done_xs,
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scsi_low_timeout_xs
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};
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struct scsipi_device scsi_low_dev = {
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NULL, /* Use default error handler */
|
|
NULL, /* have a queue, served by this */
|
|
NULL, /* have no async handler */
|
|
NULL, /* Use default 'done' routine */
|
|
};
|
|
|
|
struct scsi_low_error_code scsi_low_error_code_xs[] = {
|
|
{0, XS_NOERROR},
|
|
{SENSEIO, XS_SENSE},
|
|
{BUSYERR, XS_BUSY },
|
|
{SELTIMEOUTIO, XS_SELTIMEOUT},
|
|
{TIMEOUTIO, XS_TIMEOUT},
|
|
{-1, XS_DRIVER_STUFFUP}
|
|
};
|
|
|
|
static int
|
|
scsi_low_ioctl_xs(link, cmd, addr, flag, p)
|
|
struct scsipi_link *link;
|
|
u_long cmd;
|
|
caddr_t addr;
|
|
int flag;
|
|
struct proc *p;
|
|
{
|
|
struct scsi_low_softc *slp;
|
|
int s, error = ENOTTY;
|
|
|
|
slp = (struct scsi_low_softc *) link->adapter_softc;
|
|
if ((slp->sl_flags & HW_INACTIVE) != 0)
|
|
return ENXIO;
|
|
|
|
if (cmd == SCBUSIORESET)
|
|
{
|
|
s = SCSI_LOW_SPLSCSI();
|
|
scsi_low_restart(slp, SCSI_LOW_RESTART_HARD, NULL);
|
|
splx(s);
|
|
error = 0;
|
|
}
|
|
else if (slp->sl_funcs->scsi_low_ioctl != 0)
|
|
{
|
|
error = (*slp->sl_funcs->scsi_low_ioctl)
|
|
(slp, cmd, addr, flag, p);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
static int
|
|
scsi_low_enable_xs(arg, enable)
|
|
void *arg;
|
|
int enable;
|
|
{
|
|
struct scsi_low_softc *slp = arg;
|
|
|
|
if (enable != 0)
|
|
{
|
|
if ((slp->sl_flags & HW_INACTIVE) != 0)
|
|
return ENXIO;
|
|
}
|
|
else
|
|
{
|
|
if ((slp->sl_flags & HW_INACTIVE) != 0 ||
|
|
(slp->sl_flags & HW_POWERCTRL) == 0)
|
|
return 0;
|
|
|
|
slp->sl_flags |= HW_POWDOWN;
|
|
if (slp->sl_funcs->scsi_low_power != NULL)
|
|
{
|
|
(*slp->sl_funcs->scsi_low_power)
|
|
(slp, SCSI_LOW_POWDOWN);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
scsi_low_scsi_minphys_xs(bp)
|
|
struct buf *bp;
|
|
{
|
|
|
|
if (bp->b_bcount > SCSI_LOW_MINPHYS)
|
|
bp->b_bcount = SCSI_LOW_MINPHYS;
|
|
minphys(bp);
|
|
}
|
|
|
|
static int
|
|
scsi_low_poll_xs(slp, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
{
|
|
struct scsipi_xfer *xs = cb->osdep;
|
|
int tcount;
|
|
|
|
cb->ccb_flags |= CCB_NOSDONE;
|
|
tcount = 0;
|
|
|
|
while (slp->sl_nio > 0)
|
|
{
|
|
SCSI_LOW_DELAY((1000 * 1000) / SCSI_LOW_XS_POLL_HZ);
|
|
|
|
(*slp->sl_funcs->scsi_low_poll) (slp);
|
|
|
|
if ((slp->sl_flags & (HW_INACTIVE | HW_INITIALIZING)) != 0)
|
|
{
|
|
cb->ccb_flags |= CCB_NORETRY;
|
|
cb->ccb_error |= FATALIO;
|
|
(void) scsi_low_revoke_ccb(slp, cb, 1);
|
|
printf("%s: hardware inactive in poll mode\n",
|
|
slp->sl_xname);
|
|
}
|
|
|
|
if ((xs->flags & ITSDONE) != 0)
|
|
break;
|
|
|
|
if (tcount ++ < SCSI_LOW_XS_POLL_HZ / SCSI_LOW_TIMEOUT_HZ)
|
|
continue;
|
|
|
|
tcount = 0;
|
|
scsi_low_timeout_check(slp);
|
|
}
|
|
|
|
xs->flags |= ITSDONE;
|
|
scsipi_done(xs);
|
|
return COMPLETE;
|
|
}
|
|
|
|
static int
|
|
scsi_low_scsi_cmd_xs(xs)
|
|
struct scsipi_xfer *xs;
|
|
{
|
|
struct scsipi_link *splp = xs->sc_link;
|
|
struct scsi_low_softc *slp = splp->adapter_softc;
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
struct slccb *cb;
|
|
int s, targ, lun, flags, rv;
|
|
|
|
if ((cb = SCSI_LOW_ALLOC_CCB(xs->flags & SCSI_NOSLEEP)) == NULL)
|
|
return TRY_AGAIN_LATER;
|
|
|
|
targ = splp->scsipi_scsi.target,
|
|
lun = splp->scsipi_scsi.lun;
|
|
ti = slp->sl_ti[targ];
|
|
|
|
cb->osdep = xs;
|
|
cb->bp = xs->bp;
|
|
|
|
if ((xs->flags & SCSI_POLL) == 0)
|
|
flags = CCB_AUTOSENSE;
|
|
else
|
|
flags = CCB_AUTOSENSE | CCB_POLLED;
|
|
|
|
|
|
s = SCSI_LOW_SPLSCSI();
|
|
li = scsi_low_alloc_li(ti, lun, 1);
|
|
if ((u_int) splp->quirks != li->li_sloi.sloi_quirks)
|
|
{
|
|
scsi_low_setup_quirks_xs(ti, li, (u_int) splp->quirks);
|
|
}
|
|
|
|
if ((xs->flags & SCSI_RESET) != 0)
|
|
{
|
|
flags |= CCB_NORETRY | CCB_URGENT;
|
|
scsi_low_enqueue(slp, ti, li, cb, flags, SCSI_LOW_MSG_RESET);
|
|
}
|
|
else
|
|
{
|
|
if (ti->ti_setup_msg != 0)
|
|
{
|
|
scsi_low_message_enqueue(slp, ti, li, flags);
|
|
}
|
|
|
|
flags |= CCB_SCSIIO;
|
|
scsi_low_enqueue(slp, ti, li, cb, flags, 0);
|
|
}
|
|
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ABORT_CHECK, ti->ti_id) != 0)
|
|
{
|
|
scsi_low_test_abort(slp, ti, li);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
|
|
if ((cb->ccb_flags & CCB_POLLED) != 0)
|
|
{
|
|
rv = scsi_low_poll_xs(slp, cb);
|
|
}
|
|
else
|
|
{
|
|
rv = SUCCESSFULLY_QUEUED;
|
|
}
|
|
splx(s);
|
|
return rv;
|
|
}
|
|
|
|
static int
|
|
scsi_low_attach_xs(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct scsipi_adapter *sap;
|
|
struct scsipi_link *splp;
|
|
|
|
strncpy(slp->sl_xname, slp->sl_dev.dv_xname, 16);
|
|
|
|
sap = SCSI_LOW_MALLOC(sizeof(*sap));
|
|
if (sap == NULL)
|
|
return ENOMEM;
|
|
splp = SCSI_LOW_MALLOC(sizeof(*splp));
|
|
if (splp == NULL)
|
|
{
|
|
SCSI_LOW_FREE(sap);
|
|
return ENOMEM;
|
|
}
|
|
|
|
SCSI_LOW_BZERO(sap, sizeof(*sap));
|
|
SCSI_LOW_BZERO(splp, sizeof(*splp));
|
|
|
|
sap->scsipi_cmd = scsi_low_scsi_cmd_xs;
|
|
sap->scsipi_minphys = scsi_low_scsi_minphys_xs;
|
|
sap->scsipi_enable = scsi_low_enable_xs;
|
|
sap->scsipi_ioctl = scsi_low_ioctl_xs;
|
|
#ifdef SCSI_LOW_TARGET_OPEN
|
|
sap->open_target_lu = scsi_low_target_open;
|
|
#endif /* SCSI_LOW_TARGET_OPEN */
|
|
|
|
splp->adapter_softc = slp;
|
|
splp->scsipi_scsi.adapter_target = slp->sl_hostid;
|
|
splp->scsipi_scsi.max_target = slp->sl_ntargs - 1;
|
|
splp->scsipi_scsi.max_lun = slp->sl_nluns - 1;
|
|
splp->scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
|
|
splp->openings = slp->sl_openings;
|
|
splp->type = BUS_SCSI;
|
|
splp->adapter_softc = slp;
|
|
splp->adapter = sap;
|
|
splp->device = &scsi_low_dev;
|
|
|
|
slp->sl_si.si_splp = splp;
|
|
slp->sl_show_result = SHOW_ALL_NEG;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_world_start_xs(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_dettach_xs(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
/*
|
|
* scsipi does not have dettach bus fucntion.
|
|
*
|
|
scsipi_dettach_scsibus(slp->sl_si.si_splp);
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_ccb_setup_xs(slp, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
{
|
|
struct scsipi_xfer *xs = (struct scsipi_xfer *) cb->osdep;
|
|
|
|
if ((cb->ccb_flags & CCB_SCSIIO) != 0)
|
|
{
|
|
cb->ccb_scp.scp_cmd = (u_int8_t *) xs->cmd;
|
|
cb->ccb_scp.scp_cmdlen = xs->cmdlen;
|
|
cb->ccb_scp.scp_data = xs->data;
|
|
cb->ccb_scp.scp_datalen = xs->datalen;
|
|
cb->ccb_scp.scp_direction = (xs->flags & SCSI_DATA_OUT) ?
|
|
SCSI_LOW_WRITE : SCSI_LOW_READ;
|
|
cb->ccb_tcmax = xs->timeout / 1000;
|
|
}
|
|
else
|
|
{
|
|
scsi_low_unit_ready_cmd(cb);
|
|
}
|
|
return SCSI_LOW_START_QTAG;
|
|
}
|
|
|
|
static int
|
|
scsi_low_done_xs(slp, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
{
|
|
struct scsipi_xfer *xs;
|
|
|
|
xs = (struct scsipi_xfer *) cb->osdep;
|
|
if (cb->ccb_error == 0)
|
|
{
|
|
xs->error = XS_NOERROR;
|
|
xs->resid = 0;
|
|
}
|
|
else
|
|
{
|
|
if (cb->ccb_rcnt >= slp->sl_max_retry)
|
|
cb->ccb_error |= ABORTIO;
|
|
|
|
if ((cb->ccb_flags & CCB_NORETRY) == 0 &&
|
|
(cb->ccb_error & ABORTIO) == 0)
|
|
return EJUSTRETURN;
|
|
|
|
if ((cb->ccb_error & SENSEIO) != 0)
|
|
{
|
|
xs->sense.scsi_sense = cb->ccb_sense;
|
|
}
|
|
|
|
xs->error = scsi_low_translate_error_code(cb,
|
|
&scsi_low_error_code_xs[0]);
|
|
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if ((cb->ccb_flags & CCB_SILENT) == 0 &&
|
|
cb->ccb_scp.scp_cmdlen > 0 &&
|
|
(scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
|
|
SCSI_LOW_CMD_ABORT_WARNING) != 0)
|
|
{
|
|
printf("%s: WARNING: scsi_low IO abort\n",
|
|
slp->sl_xname);
|
|
scsi_low_print(slp, NULL);
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
}
|
|
|
|
if (cb->ccb_scp.scp_status == ST_UNKNOWN)
|
|
xs->status = 0; /* XXX */
|
|
else
|
|
xs->status = cb->ccb_scp.scp_status;
|
|
|
|
xs->flags |= ITSDONE;
|
|
if ((cb->ccb_flags & CCB_NOSDONE) == 0)
|
|
scsipi_done(xs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
scsi_low_timeout_xs(slp, ch, action)
|
|
struct scsi_low_softc *slp;
|
|
int ch;
|
|
int action;
|
|
{
|
|
|
|
switch (ch)
|
|
{
|
|
case SCSI_LOW_TIMEOUT_CH_IO:
|
|
switch (action)
|
|
{
|
|
case SCSI_LOW_TIMEOUT_START:
|
|
timeout(scsi_low_timeout, slp,
|
|
hz / SCSI_LOW_TIMEOUT_HZ);
|
|
break;
|
|
case SCSI_LOW_TIMEOUT_STOP:
|
|
untimeout(scsi_low_timeout, slp);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case SCSI_LOW_TIMEOUT_CH_ENGAGE:
|
|
switch (action)
|
|
{
|
|
case SCSI_LOW_TIMEOUT_START:
|
|
timeout(scsi_low_engage, slp, 1);
|
|
break;
|
|
case SCSI_LOW_TIMEOUT_STOP:
|
|
untimeout(scsi_low_engage, slp);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case SCSI_LOW_TIMEOUT_CH_RECOVER:
|
|
break;
|
|
}
|
|
}
|
|
|
|
u_int
|
|
scsi_low_translate_quirks_xs(quirks)
|
|
u_int quirks;
|
|
{
|
|
u_int flags;
|
|
|
|
flags = SCSI_LOW_DISK_LFLAGS | SCSI_LOW_DISK_TFLAGS;
|
|
|
|
#ifdef SDEV_NODISC
|
|
if (quirks & SDEV_NODISC)
|
|
flags &= ~SCSI_LOW_DISK_DISC;
|
|
#endif /* SDEV_NODISC */
|
|
#ifdef SDEV_NOPARITY
|
|
if (quirks & SDEV_NOPARITY)
|
|
flags &= ~SCSI_LOW_DISK_PARITY;
|
|
#endif /* SDEV_NOPARITY */
|
|
#ifdef SDEV_NOCMDLNK
|
|
if (quirks & SDEV_NOCMDLNK)
|
|
flags &= ~SCSI_LOW_DISK_LINK;
|
|
#endif /* SDEV_NOCMDLNK */
|
|
#ifdef SDEV_NOTAG
|
|
if (quirks & SDEV_NOTAG)
|
|
flags &= ~SCSI_LOW_DISK_QTAG;
|
|
#endif /* SDEV_NOTAG */
|
|
#ifdef SDEV_NOSYNC
|
|
if (quirks & SDEV_NOSYNC)
|
|
flags &= ~SCSI_LOW_DISK_SYNC;
|
|
#endif /* SDEV_NOSYNC */
|
|
|
|
return flags;
|
|
}
|
|
|
|
static void
|
|
scsi_low_setup_quirks_xs(ti, li, flags)
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
u_int flags;
|
|
{
|
|
u_int quirks;
|
|
|
|
li->li_sloi.sloi_quirks = flags;
|
|
quirks = scsi_low_translate_quirks_xs(flags);
|
|
ti->ti_quirks = quirks & SCSI_LOW_DISK_TFLAGS;
|
|
li->li_quirks = quirks & SCSI_LOW_DISK_LFLAGS;
|
|
ti->ti_flags_valid |= SCSI_LOW_TARG_FLAGS_QUIRKS_VALID;
|
|
li->li_flags_valid |= SCSI_LOW_LUN_FLAGS_QUIRKS_VALID;
|
|
scsi_low_calcf_target(ti);
|
|
scsi_low_calcf_lun(li);
|
|
scsi_low_calcf_show(li);
|
|
}
|
|
|
|
#ifdef SCSI_LOW_TARGET_OPEN
|
|
static int
|
|
scsi_low_target_open(link, cf)
|
|
struct scsipi_link *link;
|
|
struct cfdata *cf;
|
|
{
|
|
u_int target = link->scsipi_scsi.target;
|
|
u_int lun = link->scsipi_scsi.lun;
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
|
|
slp = (struct scsi_low_softc *) link->adapter_softc;
|
|
ti = slp->sl_ti[target];
|
|
li = scsi_low_alloc_li(ti, lun, 0);
|
|
if (li == NULL)
|
|
return 0;
|
|
|
|
li->li_cfgflags = cf->cf_flags;
|
|
scsi_low_setup_quirks_xs(ti, li, (u_int) link->quirks);
|
|
return 0;
|
|
}
|
|
#endif /* SCSI_LOW_TARGET_OPEN */
|
|
|
|
#endif /* SCSI_LOW_INTERFACE_XS */
|
|
|
|
#ifdef SCSI_LOW_INTERFACE_CAM
|
|
/**************************************************************
|
|
* SCSI INTERFACE (CAM)
|
|
**************************************************************/
|
|
#define SCSI_LOW_MALLOC(size) malloc((size), M_SCSILOW, M_NOWAIT)
|
|
#define SCSI_LOW_FREE(pt) free((pt), M_SCSILOW)
|
|
#define SCSI_LOW_ALLOC_CCB(flags) scsi_low_get_ccb()
|
|
|
|
static void scsi_low_poll_cam(struct cam_sim *);
|
|
void scsi_low_scsi_action_cam(struct cam_sim *, union ccb *);
|
|
|
|
static int scsi_low_attach_cam(struct scsi_low_softc *);
|
|
static int scsi_low_world_start_cam(struct scsi_low_softc *);
|
|
static int scsi_low_dettach_cam(struct scsi_low_softc *);
|
|
static int scsi_low_ccb_setup_cam(struct scsi_low_softc *, struct slccb *);
|
|
static int scsi_low_done_cam(struct scsi_low_softc *, struct slccb *);
|
|
static void scsi_low_timeout_cam(struct scsi_low_softc *, int, int);
|
|
|
|
struct scsi_low_osdep_funcs scsi_low_osdep_funcs_cam = {
|
|
scsi_low_attach_cam,
|
|
scsi_low_world_start_cam,
|
|
scsi_low_dettach_cam,
|
|
scsi_low_ccb_setup_cam,
|
|
scsi_low_done_cam,
|
|
scsi_low_timeout_cam
|
|
};
|
|
|
|
struct scsi_low_error_code scsi_low_error_code_cam[] = {
|
|
{0, CAM_REQ_CMP},
|
|
{SENSEIO, CAM_AUTOSNS_VALID | CAM_REQ_CMP_ERR},
|
|
{SENSEERR, CAM_AUTOSENSE_FAIL},
|
|
{UACAERR, CAM_SCSI_STATUS_ERROR},
|
|
{BUSYERR | STATERR, CAM_SCSI_STATUS_ERROR},
|
|
{SELTIMEOUTIO, CAM_SEL_TIMEOUT},
|
|
{TIMEOUTIO, CAM_CMD_TIMEOUT},
|
|
{PDMAERR, CAM_DATA_RUN_ERR},
|
|
{PARITYERR, CAM_UNCOR_PARITY},
|
|
{UBFERR, CAM_UNEXP_BUSFREE},
|
|
{ABORTIO, CAM_REQ_ABORTED},
|
|
{-1, CAM_UNREC_HBA_ERROR}
|
|
};
|
|
|
|
#define SIM2SLP(sim) ((struct scsi_low_softc *) cam_sim_softc((sim)))
|
|
|
|
/* XXX:
|
|
* Please check a polling hz, currently we assume scsi_low_poll() is
|
|
* called each 1 ms.
|
|
*/
|
|
#define SCSI_LOW_CAM_POLL_HZ 1000 /* OK ? */
|
|
|
|
static void
|
|
scsi_low_poll_cam(sim)
|
|
struct cam_sim *sim;
|
|
{
|
|
struct scsi_low_softc *slp = SIM2SLP(sim);
|
|
|
|
(*slp->sl_funcs->scsi_low_poll) (slp);
|
|
|
|
if (slp->sl_si.si_poll_count ++ >=
|
|
SCSI_LOW_CAM_POLL_HZ / SCSI_LOW_TIMEOUT_HZ)
|
|
{
|
|
slp->sl_si.si_poll_count = 0;
|
|
scsi_low_timeout_check(slp);
|
|
}
|
|
}
|
|
|
|
void
|
|
scsi_low_scsi_action_cam(sim, ccb)
|
|
struct cam_sim *sim;
|
|
union ccb *ccb;
|
|
{
|
|
struct scsi_low_softc *slp = SIM2SLP(sim);
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
struct slccb *cb;
|
|
u_int lun, flags, msg, target;
|
|
int s, rv;
|
|
|
|
target = (u_int) (ccb->ccb_h.target_id);
|
|
lun = (u_int) ccb->ccb_h.target_lun;
|
|
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_ACTION, target) != 0)
|
|
{
|
|
printf("%s: cam_action: func code 0x%x target: %d, lun: %d\n",
|
|
slp->sl_xname, ccb->ccb_h.func_code, target, lun);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
|
|
switch (ccb->ccb_h.func_code) {
|
|
case XPT_SCSI_IO: /* Execute the requested I/O operation */
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if (target == CAM_TARGET_WILDCARD || lun == CAM_LUN_WILDCARD)
|
|
{
|
|
printf("%s: invalid target/lun\n", slp->sl_xname);
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
if (((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)) {
|
|
ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
|
|
ti = slp->sl_ti[target];
|
|
cb->osdep = ccb;
|
|
cb->bp = NULL;
|
|
if ((ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0)
|
|
flags = CCB_AUTOSENSE | CCB_SCSIIO;
|
|
else
|
|
flags = CCB_SCSIIO;
|
|
|
|
s = SCSI_LOW_SPLSCSI();
|
|
li = scsi_low_alloc_li(ti, lun, 1);
|
|
|
|
if (ti->ti_setup_msg != 0)
|
|
{
|
|
scsi_low_message_enqueue(slp, ti, li, CCB_AUTOSENSE);
|
|
}
|
|
|
|
scsi_low_enqueue(slp, ti, li, cb, flags, 0);
|
|
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ABORT_CHECK, target) != 0)
|
|
{
|
|
scsi_low_test_abort(slp, ti, li);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
splx(s);
|
|
break;
|
|
|
|
case XPT_EN_LUN: /* Enable LUN as a target */
|
|
case XPT_TARGET_IO: /* Execute target I/O request */
|
|
case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */
|
|
case XPT_CONT_TARGET_IO: /* Continue Host Target I/O Connection*/
|
|
/* XXX Implement */
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
break;
|
|
|
|
case XPT_ABORT: /* Abort the specified CCB */
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if (target == CAM_TARGET_WILDCARD || lun == CAM_LUN_WILDCARD)
|
|
{
|
|
printf("%s: invalid target/lun\n", slp->sl_xname);
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
s = SCSI_LOW_SPLSCSI();
|
|
cb = scsi_low_find_ccb(slp, target, lun, ccb->cab.abort_ccb);
|
|
rv = scsi_low_abort_ccb(slp, cb);
|
|
splx(s);
|
|
|
|
if (rv == 0)
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
else
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
break;
|
|
|
|
case XPT_SET_TRAN_SETTINGS: {
|
|
struct ccb_trans_settings_scsi *scsi;
|
|
struct ccb_trans_settings_spi *spi;
|
|
struct ccb_trans_settings *cts;
|
|
u_int val;
|
|
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if (target == CAM_TARGET_WILDCARD)
|
|
{
|
|
printf("%s: invalid target\n", slp->sl_xname);
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
cts = &ccb->cts;
|
|
ti = slp->sl_ti[target];
|
|
if (lun == CAM_LUN_WILDCARD)
|
|
lun = 0;
|
|
|
|
s = SCSI_LOW_SPLSCSI();
|
|
scsi = &cts->proto_specific.scsi;
|
|
spi = &cts->xport_specific.spi;
|
|
if ((spi->valid & (CTS_SPI_VALID_BUS_WIDTH |
|
|
CTS_SPI_VALID_SYNC_RATE |
|
|
CTS_SPI_VALID_SYNC_OFFSET)) != 0)
|
|
{
|
|
if (spi->valid & CTS_SPI_VALID_BUS_WIDTH) {
|
|
val = spi->bus_width;
|
|
if (val < ti->ti_width)
|
|
ti->ti_width = val;
|
|
}
|
|
if (spi->valid & CTS_SPI_VALID_SYNC_RATE) {
|
|
val = spi->sync_period;
|
|
if (val == 0 || val > ti->ti_maxsynch.period)
|
|
ti->ti_maxsynch.period = val;
|
|
}
|
|
if (spi->valid & CTS_SPI_VALID_SYNC_OFFSET) {
|
|
val = spi->sync_offset;
|
|
if (val < ti->ti_maxsynch.offset)
|
|
ti->ti_maxsynch.offset = val;
|
|
}
|
|
ti->ti_flags_valid |= SCSI_LOW_TARG_FLAGS_QUIRKS_VALID;
|
|
scsi_low_calcf_target(ti);
|
|
}
|
|
|
|
if ((spi->valid & CTS_SPI_FLAGS_DISC_ENB) != 0 ||
|
|
(scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
|
|
|
|
li = scsi_low_alloc_li(ti, lun, 1);
|
|
if (spi->valid & CTS_SPI_FLAGS_DISC_ENB) {
|
|
li->li_quirks |= SCSI_LOW_DISK_DISC;
|
|
} else {
|
|
li->li_quirks &= ~SCSI_LOW_DISK_DISC;
|
|
}
|
|
|
|
if (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) {
|
|
li->li_quirks |= SCSI_LOW_DISK_QTAG;
|
|
} else {
|
|
li->li_quirks &= ~SCSI_LOW_DISK_QTAG;
|
|
}
|
|
li->li_flags_valid |= SCSI_LOW_LUN_FLAGS_QUIRKS_VALID;
|
|
scsi_low_calcf_target(ti);
|
|
scsi_low_calcf_lun(li);
|
|
if ((slp->sl_show_result & SHOW_CALCF_RES) != 0)
|
|
scsi_low_calcf_show(li);
|
|
}
|
|
splx(s);
|
|
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
|
|
case XPT_GET_TRAN_SETTINGS: {
|
|
struct ccb_trans_settings *cts;
|
|
u_int diskflags;
|
|
|
|
cts = &ccb->cts;
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if (target == CAM_TARGET_WILDCARD)
|
|
{
|
|
printf("%s: invalid target\n", slp->sl_xname);
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
ti = slp->sl_ti[target];
|
|
if (lun == CAM_LUN_WILDCARD)
|
|
lun = 0;
|
|
|
|
s = SCSI_LOW_SPLSCSI();
|
|
li = scsi_low_alloc_li(ti, lun, 1);
|
|
if (li != NULL && cts->type == CTS_TYPE_CURRENT_SETTINGS) {
|
|
struct ccb_trans_settings_scsi *scsi =
|
|
&cts->proto_specific.scsi;
|
|
struct ccb_trans_settings_spi *spi =
|
|
&cts->xport_specific.spi;
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if (li->li_flags_valid != SCSI_LOW_LUN_FLAGS_ALL_VALID)
|
|
{
|
|
ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
|
|
printf("%s: invalid GET_TRANS_CURRENT_SETTINGS call\n",
|
|
slp->sl_xname);
|
|
goto settings_out;
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
cts->protocol = PROTO_SCSI;
|
|
cts->protocol_version = SCSI_REV_2;
|
|
cts->transport = XPORT_SPI;
|
|
cts->transport_version = 2;
|
|
|
|
scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
|
|
spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
|
|
|
|
diskflags = li->li_diskflags & li->li_cfgflags;
|
|
if (diskflags & SCSI_LOW_DISK_DISC)
|
|
spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
|
|
if (diskflags & SCSI_LOW_DISK_QTAG)
|
|
scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
|
|
|
|
spi->sync_period = ti->ti_maxsynch.period;
|
|
spi->valid |= CTS_SPI_VALID_SYNC_RATE;
|
|
spi->sync_offset = ti->ti_maxsynch.offset;
|
|
spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
|
|
|
|
spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
|
|
spi->bus_width = ti->ti_width;
|
|
|
|
if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
|
|
scsi->valid = CTS_SCSI_VALID_TQ;
|
|
spi->valid |= CTS_SPI_VALID_DISC;
|
|
} else
|
|
scsi->valid = 0;
|
|
} else
|
|
ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
|
|
settings_out:
|
|
splx(s);
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
|
|
case XPT_CALC_GEOMETRY: { /* not yet HN2 */
|
|
cam_calc_geometry(&ccb->ccg, /*extended*/1);
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
|
|
case XPT_RESET_BUS: /* Reset the specified SCSI bus */
|
|
s = SCSI_LOW_SPLSCSI();
|
|
scsi_low_restart(slp, SCSI_LOW_RESTART_HARD, NULL);
|
|
splx(s);
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
xpt_done(ccb);
|
|
break;
|
|
|
|
case XPT_TERM_IO: /* Terminate the I/O process */
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
break;
|
|
|
|
case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if (target == CAM_TARGET_WILDCARD)
|
|
{
|
|
printf("%s: invalid target\n", slp->sl_xname);
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
msg = SCSI_LOW_MSG_RESET;
|
|
if (((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL))
|
|
{
|
|
ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
|
|
ti = slp->sl_ti[target];
|
|
if (lun == CAM_LUN_WILDCARD)
|
|
lun = 0;
|
|
cb->osdep = ccb;
|
|
cb->bp = NULL;
|
|
if ((ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0)
|
|
flags = CCB_AUTOSENSE | CCB_NORETRY | CCB_URGENT;
|
|
else
|
|
flags = CCB_NORETRY | CCB_URGENT;
|
|
|
|
s = SCSI_LOW_SPLSCSI();
|
|
li = scsi_low_alloc_li(ti, lun, 1);
|
|
scsi_low_enqueue(slp, ti, li, cb, flags, msg);
|
|
splx(s);
|
|
break;
|
|
|
|
case XPT_PATH_INQ: { /* Path routing inquiry */
|
|
struct ccb_pathinq *cpi = &ccb->cpi;
|
|
|
|
cpi->version_num = scsi_low_version_major;
|
|
cpi->hba_inquiry = PI_TAG_ABLE | PI_LINKED_CDB;
|
|
ti = slp->sl_ti[slp->sl_hostid]; /* host id */
|
|
if (ti->ti_width > SCSI_LOW_BUS_WIDTH_8)
|
|
cpi->hba_inquiry |= PI_WIDE_16;
|
|
if (ti->ti_width > SCSI_LOW_BUS_WIDTH_16)
|
|
cpi->hba_inquiry |= PI_WIDE_32;
|
|
if (ti->ti_maxsynch.offset > 0)
|
|
cpi->hba_inquiry |= PI_SDTR_ABLE;
|
|
cpi->target_sprt = 0;
|
|
cpi->hba_misc = 0;
|
|
cpi->hba_eng_cnt = 0;
|
|
cpi->max_target = slp->sl_ntargs - 1;
|
|
cpi->max_lun = slp->sl_nluns - 1;
|
|
cpi->initiator_id = slp->sl_hostid;
|
|
cpi->bus_id = cam_sim_bus(sim);
|
|
cpi->base_transfer_speed = 3300;
|
|
cpi->transport = XPORT_SPI;
|
|
cpi->transport_version = 2;
|
|
cpi->protocol = PROTO_SCSI;
|
|
cpi->protocol_version = SCSI_REV_2;
|
|
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
|
|
strncpy(cpi->hba_vid, "SCSI_LOW", HBA_IDLEN);
|
|
strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
|
|
cpi->unit_number = cam_sim_unit(sim);
|
|
cpi->ccb_h.status = CAM_REQ_CMP;
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
printf("scsi_low: non support func_code = %d ",
|
|
ccb->ccb_h.func_code);
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
scsi_low_attach_cam(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct cam_devq *devq;
|
|
int tagged_openings;
|
|
|
|
sprintf(slp->sl_xname, "%s%d",
|
|
DEVPORT_DEVNAME(slp->sl_dev), DEVPORT_DEVUNIT(slp->sl_dev));
|
|
|
|
devq = cam_simq_alloc(SCSI_LOW_NCCB);
|
|
if (devq == NULL)
|
|
return (ENOMEM);
|
|
|
|
/*
|
|
* ask the adapter what subunits are present
|
|
*/
|
|
tagged_openings = min(slp->sl_openings, SCSI_LOW_MAXNEXUS);
|
|
slp->sl_si.sim = cam_sim_alloc(scsi_low_scsi_action_cam,
|
|
scsi_low_poll_cam,
|
|
DEVPORT_DEVNAME(slp->sl_dev), slp,
|
|
DEVPORT_DEVUNIT(slp->sl_dev), &Giant,
|
|
slp->sl_openings, tagged_openings, devq);
|
|
|
|
if (slp->sl_si.sim == NULL) {
|
|
cam_simq_free(devq);
|
|
return ENODEV;
|
|
}
|
|
|
|
if (xpt_bus_register(slp->sl_si.sim, NULL, 0) != CAM_SUCCESS) {
|
|
free(slp->sl_si.sim, M_SCSILOW);
|
|
return ENODEV;
|
|
}
|
|
|
|
if (xpt_create_path(&slp->sl_si.path, /*periph*/NULL,
|
|
cam_sim_path(slp->sl_si.sim), CAM_TARGET_WILDCARD,
|
|
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
|
|
xpt_bus_deregister(cam_sim_path(slp->sl_si.sim));
|
|
cam_sim_free(slp->sl_si.sim, /*free_simq*/TRUE);
|
|
return ENODEV;
|
|
}
|
|
|
|
slp->sl_show_result = SHOW_CALCF_RES; /* OK ? */
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_world_start_cam(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_dettach_cam(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
xpt_async(AC_LOST_DEVICE, slp->sl_si.path, NULL);
|
|
xpt_free_path(slp->sl_si.path);
|
|
xpt_bus_deregister(cam_sim_path(slp->sl_si.sim));
|
|
cam_sim_free(slp->sl_si.sim, /* free_devq */ TRUE);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_ccb_setup_cam(slp, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
{
|
|
union ccb *ccb = (union ccb *) cb->osdep;
|
|
|
|
if ((cb->ccb_flags & CCB_SCSIIO) != 0)
|
|
{
|
|
cb->ccb_scp.scp_cmd = ccb->csio.cdb_io.cdb_bytes;
|
|
cb->ccb_scp.scp_cmdlen = (int) ccb->csio.cdb_len;
|
|
cb->ccb_scp.scp_data = ccb->csio.data_ptr;
|
|
cb->ccb_scp.scp_datalen = (int) ccb->csio.dxfer_len;
|
|
if((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
|
|
cb->ccb_scp.scp_direction = SCSI_LOW_WRITE;
|
|
else /* if((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) */
|
|
cb->ccb_scp.scp_direction = SCSI_LOW_READ;
|
|
cb->ccb_tcmax = ccb->ccb_h.timeout / 1000;
|
|
}
|
|
else
|
|
{
|
|
scsi_low_unit_ready_cmd(cb);
|
|
}
|
|
return SCSI_LOW_START_QTAG;
|
|
}
|
|
|
|
static int
|
|
scsi_low_done_cam(slp, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
{
|
|
union ccb *ccb;
|
|
|
|
ccb = (union ccb *) cb->osdep;
|
|
if (cb->ccb_error == 0)
|
|
{
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
ccb->csio.resid = 0;
|
|
}
|
|
else
|
|
{
|
|
if (cb->ccb_rcnt >= slp->sl_max_retry)
|
|
cb->ccb_error |= ABORTIO;
|
|
|
|
if ((cb->ccb_flags & CCB_NORETRY) == 0 &&
|
|
(cb->ccb_error & ABORTIO) == 0)
|
|
return EJUSTRETURN;
|
|
|
|
if ((cb->ccb_error & SENSEIO) != 0)
|
|
{
|
|
memcpy(&ccb->csio.sense_data,
|
|
&cb->ccb_sense,
|
|
sizeof(ccb->csio.sense_data));
|
|
}
|
|
|
|
ccb->ccb_h.status = scsi_low_translate_error_code(cb,
|
|
&scsi_low_error_code_cam[0]);
|
|
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if ((cb->ccb_flags & CCB_SILENT) == 0 &&
|
|
cb->ccb_scp.scp_cmdlen > 0 &&
|
|
(scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
|
|
SCSI_LOW_CMD_ABORT_WARNING) != 0)
|
|
{
|
|
printf("%s: WARNING: scsi_low IO abort\n",
|
|
slp->sl_xname);
|
|
scsi_low_print(slp, NULL);
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
}
|
|
|
|
if ((ccb->ccb_h.status & CAM_STATUS_MASK) == 0)
|
|
ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
|
|
|
|
if (cb->ccb_scp.scp_status == ST_UNKNOWN)
|
|
ccb->csio.scsi_status = 0; /* XXX */
|
|
else
|
|
ccb->csio.scsi_status = cb->ccb_scp.scp_status;
|
|
|
|
if ((cb->ccb_flags & CCB_NOSDONE) == 0)
|
|
xpt_done(ccb);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
scsi_low_timeout_cam(slp, ch, action)
|
|
struct scsi_low_softc *slp;
|
|
int ch;
|
|
int action;
|
|
{
|
|
|
|
switch (ch)
|
|
{
|
|
case SCSI_LOW_TIMEOUT_CH_IO:
|
|
switch (action)
|
|
{
|
|
case SCSI_LOW_TIMEOUT_START:
|
|
slp->sl_si.timeout_ch = timeout(scsi_low_timeout, slp,
|
|
hz / SCSI_LOW_TIMEOUT_HZ);
|
|
break;
|
|
case SCSI_LOW_TIMEOUT_STOP:
|
|
untimeout(scsi_low_timeout, slp, slp->sl_si.timeout_ch);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case SCSI_LOW_TIMEOUT_CH_ENGAGE:
|
|
switch (action)
|
|
{
|
|
case SCSI_LOW_TIMEOUT_START:
|
|
slp->sl_si.engage_ch = timeout(scsi_low_engage, slp, 1);
|
|
break;
|
|
case SCSI_LOW_TIMEOUT_STOP:
|
|
untimeout(scsi_low_engage, slp, slp->sl_si.engage_ch);
|
|
break;
|
|
}
|
|
break;
|
|
case SCSI_LOW_TIMEOUT_CH_RECOVER:
|
|
break;
|
|
}
|
|
}
|
|
|
|
#endif /* SCSI_LOW_INTERFACE_CAM */
|
|
|
|
/*=============================================================
|
|
* END OF OS switch (All OS depend fucntions should be above)
|
|
=============================================================*/
|
|
|
|
/**************************************************************
|
|
* scsi low deactivate and activate
|
|
**************************************************************/
|
|
int
|
|
scsi_low_is_busy(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
if (slp->sl_nio > 0)
|
|
return EBUSY;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
scsi_low_deactivate(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
int s;
|
|
|
|
s = SCSI_LOW_SPLSCSI();
|
|
slp->sl_flags |= HW_INACTIVE;
|
|
(*slp->sl_osdep_fp->scsi_low_osdep_timeout)
|
|
(slp, SCSI_LOW_TIMEOUT_CH_IO, SCSI_LOW_TIMEOUT_STOP);
|
|
(*slp->sl_osdep_fp->scsi_low_osdep_timeout)
|
|
(slp, SCSI_LOW_TIMEOUT_CH_ENGAGE, SCSI_LOW_TIMEOUT_STOP);
|
|
splx(s);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
scsi_low_activate(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
int error, s;
|
|
|
|
s = SCSI_LOW_SPLSCSI();
|
|
slp->sl_flags &= ~HW_INACTIVE;
|
|
if ((error = scsi_low_restart(slp, SCSI_LOW_RESTART_HARD, NULL)) != 0)
|
|
{
|
|
slp->sl_flags |= HW_INACTIVE;
|
|
splx(s);
|
|
return error;
|
|
}
|
|
|
|
slp->sl_timeout_count = 0;
|
|
(*slp->sl_osdep_fp->scsi_low_osdep_timeout)
|
|
(slp, SCSI_LOW_TIMEOUT_CH_IO, SCSI_LOW_TIMEOUT_START);
|
|
splx(s);
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************
|
|
* scsi low log
|
|
**************************************************************/
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
static void scsi_low_msg_log_init(struct scsi_low_msg_log *);
|
|
static void scsi_low_msg_log_write(struct scsi_low_msg_log *, u_int8_t *, int);
|
|
static void scsi_low_msg_log_show(struct scsi_low_msg_log *, char *, int);
|
|
|
|
static void
|
|
scsi_low_msg_log_init(slmlp)
|
|
struct scsi_low_msg_log *slmlp;
|
|
{
|
|
|
|
slmlp->slml_ptr = 0;
|
|
}
|
|
|
|
static void
|
|
scsi_low_msg_log_write(slmlp, datap, len)
|
|
struct scsi_low_msg_log *slmlp;
|
|
u_int8_t *datap;
|
|
int len;
|
|
{
|
|
int ptr, ind;
|
|
|
|
if (slmlp->slml_ptr >= SCSI_LOW_MSG_LOG_DATALEN)
|
|
return;
|
|
|
|
ptr = slmlp->slml_ptr ++;
|
|
for (ind = 0; ind < sizeof(slmlp->slml_msg[0]) && ind < len; ind ++)
|
|
slmlp->slml_msg[ptr].msg[ind] = datap[ind];
|
|
for ( ; ind < sizeof(slmlp->slml_msg[0]); ind ++)
|
|
slmlp->slml_msg[ptr].msg[ind] = 0;
|
|
}
|
|
|
|
static void
|
|
scsi_low_msg_log_show(slmlp, s, len)
|
|
struct scsi_low_msg_log *slmlp;
|
|
char *s;
|
|
int len;
|
|
{
|
|
int ptr, ind;
|
|
|
|
printf("%s: (%d) ", s, slmlp->slml_ptr);
|
|
for (ptr = 0; ptr < slmlp->slml_ptr; ptr ++)
|
|
{
|
|
for (ind = 0; ind < len && ind < sizeof(slmlp->slml_msg[0]);
|
|
ind ++)
|
|
{
|
|
printf("[%x]", (u_int) slmlp->slml_msg[ptr].msg[ind]);
|
|
}
|
|
printf(">");
|
|
}
|
|
printf("\n");
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
/**************************************************************
|
|
* power control
|
|
**************************************************************/
|
|
static void
|
|
scsi_low_engage(arg)
|
|
void *arg;
|
|
{
|
|
struct scsi_low_softc *slp = arg;
|
|
int s = SCSI_LOW_SPLSCSI();
|
|
|
|
switch (slp->sl_rstep)
|
|
{
|
|
case 0:
|
|
slp->sl_rstep ++;
|
|
(*slp->sl_funcs->scsi_low_power) (slp, SCSI_LOW_ENGAGE);
|
|
(*slp->sl_osdep_fp->scsi_low_osdep_timeout) (slp,
|
|
SCSI_LOW_TIMEOUT_CH_ENGAGE, SCSI_LOW_TIMEOUT_START);
|
|
break;
|
|
|
|
case 1:
|
|
slp->sl_rstep ++;
|
|
slp->sl_flags &= ~HW_RESUME;
|
|
scsi_low_start(slp);
|
|
break;
|
|
|
|
case 2:
|
|
break;
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
static int
|
|
scsi_low_init(slp, flags)
|
|
struct scsi_low_softc *slp;
|
|
u_int flags;
|
|
{
|
|
int rv = 0;
|
|
|
|
slp->sl_flags |= HW_INITIALIZING;
|
|
|
|
/* clear power control timeout */
|
|
if ((slp->sl_flags & HW_POWERCTRL) != 0)
|
|
{
|
|
(*slp->sl_osdep_fp->scsi_low_osdep_timeout) (slp,
|
|
SCSI_LOW_TIMEOUT_CH_ENGAGE, SCSI_LOW_TIMEOUT_STOP);
|
|
slp->sl_flags &= ~(HW_POWDOWN | HW_RESUME);
|
|
slp->sl_active = 1;
|
|
slp->sl_powc = SCSI_LOW_POWDOWN_TC;
|
|
}
|
|
|
|
/* reset current nexus */
|
|
scsi_low_reset_nexus(slp, flags);
|
|
if ((slp->sl_flags & HW_INACTIVE) != 0)
|
|
{
|
|
rv = EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
if (flags != SCSI_LOW_RESTART_SOFT)
|
|
{
|
|
rv = ((*slp->sl_funcs->scsi_low_init) (slp, flags));
|
|
}
|
|
|
|
out:
|
|
slp->sl_flags &= ~HW_INITIALIZING;
|
|
return rv;
|
|
}
|
|
|
|
/**************************************************************
|
|
* allocate lun_info
|
|
**************************************************************/
|
|
static struct lun_info *
|
|
scsi_low_alloc_li(ti, lun, alloc)
|
|
struct targ_info *ti;
|
|
int lun;
|
|
int alloc;
|
|
{
|
|
struct scsi_low_softc *slp = ti->ti_sc;
|
|
struct lun_info *li;
|
|
|
|
li = LIST_FIRST(&ti->ti_litab);
|
|
if (li != NULL)
|
|
{
|
|
if (li->li_lun == lun)
|
|
return li;
|
|
|
|
while ((li = LIST_NEXT(li, lun_chain)) != NULL)
|
|
{
|
|
if (li->li_lun == lun)
|
|
{
|
|
LIST_REMOVE(li, lun_chain);
|
|
LIST_INSERT_HEAD(&ti->ti_litab, li, lun_chain);
|
|
return li;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (alloc == 0)
|
|
return li;
|
|
|
|
li = SCSI_LOW_MALLOC(ti->ti_lunsize);
|
|
if (li == NULL)
|
|
panic("no lun info mem");
|
|
|
|
SCSI_LOW_BZERO(li, ti->ti_lunsize);
|
|
li->li_lun = lun;
|
|
li->li_ti = ti;
|
|
|
|
li->li_cfgflags = SCSI_LOW_SYNC | SCSI_LOW_LINK | SCSI_LOW_DISC |
|
|
SCSI_LOW_QTAG;
|
|
li->li_quirks = li->li_diskflags = SCSI_LOW_DISK_LFLAGS;
|
|
li->li_flags_valid = SCSI_LOW_LUN_FLAGS_USER_VALID;
|
|
#ifdef SCSI_LOW_FLAGS_QUIRKS_OK
|
|
li->li_flags_valid |= SCSI_LOW_LUN_FLAGS_QUIRKS_VALID;
|
|
#endif /* SCSI_LOW_FLAGS_QUIRKS_OK */
|
|
|
|
li->li_qtagbits = (u_int) -1;
|
|
|
|
TAILQ_INIT(&li->li_discq);
|
|
LIST_INSERT_HEAD(&ti->ti_litab, li, lun_chain);
|
|
|
|
/* host specific structure initialization per lun */
|
|
if (slp->sl_funcs->scsi_low_lun_init != NULL)
|
|
(*slp->sl_funcs->scsi_low_lun_init)
|
|
(slp, ti, li, SCSI_LOW_INFO_ALLOC);
|
|
scsi_low_calcf_lun(li);
|
|
return li;
|
|
}
|
|
|
|
/**************************************************************
|
|
* allocate targ_info
|
|
**************************************************************/
|
|
static struct targ_info *
|
|
scsi_low_alloc_ti(slp, targ)
|
|
struct scsi_low_softc *slp;
|
|
int targ;
|
|
{
|
|
struct targ_info *ti;
|
|
|
|
if (TAILQ_FIRST(&slp->sl_titab) == NULL)
|
|
TAILQ_INIT(&slp->sl_titab);
|
|
|
|
ti = SCSI_LOW_MALLOC(slp->sl_targsize);
|
|
if (ti == NULL)
|
|
panic("%s short of memory", slp->sl_xname);
|
|
|
|
SCSI_LOW_BZERO(ti, slp->sl_targsize);
|
|
ti->ti_id = targ;
|
|
ti->ti_sc = slp;
|
|
|
|
slp->sl_ti[targ] = ti;
|
|
TAILQ_INSERT_TAIL(&slp->sl_titab, ti, ti_chain);
|
|
LIST_INIT(&ti->ti_litab);
|
|
|
|
ti->ti_quirks = ti->ti_diskflags = SCSI_LOW_DISK_TFLAGS;
|
|
ti->ti_owidth = SCSI_LOW_BUS_WIDTH_8;
|
|
ti->ti_flags_valid = SCSI_LOW_TARG_FLAGS_USER_VALID;
|
|
#ifdef SCSI_LOW_FLAGS_QUIRKS_OK
|
|
ti->ti_flags_valid |= SCSI_LOW_TARG_FLAGS_QUIRKS_VALID;
|
|
#endif /* SCSI_LOW_FLAGS_QUIRKS_OK */
|
|
|
|
if (slp->sl_funcs->scsi_low_targ_init != NULL)
|
|
{
|
|
(*slp->sl_funcs->scsi_low_targ_init)
|
|
(slp, ti, SCSI_LOW_INFO_ALLOC);
|
|
}
|
|
scsi_low_calcf_target(ti);
|
|
return ti;
|
|
}
|
|
|
|
static void
|
|
scsi_low_free_ti(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti, *tib;
|
|
struct lun_info *li, *nli;
|
|
|
|
for (ti = TAILQ_FIRST(&slp->sl_titab); ti; ti = tib)
|
|
{
|
|
for (li = LIST_FIRST(&ti->ti_litab); li != NULL; li = nli)
|
|
{
|
|
if (slp->sl_funcs->scsi_low_lun_init != NULL)
|
|
{
|
|
(*slp->sl_funcs->scsi_low_lun_init)
|
|
(slp, ti, li, SCSI_LOW_INFO_DEALLOC);
|
|
}
|
|
nli = LIST_NEXT(li, lun_chain);
|
|
SCSI_LOW_FREE(li);
|
|
}
|
|
|
|
if (slp->sl_funcs->scsi_low_targ_init != NULL)
|
|
{
|
|
(*slp->sl_funcs->scsi_low_targ_init)
|
|
(slp, ti, SCSI_LOW_INFO_DEALLOC);
|
|
}
|
|
tib = TAILQ_NEXT(ti, ti_chain);
|
|
SCSI_LOW_FREE(ti);
|
|
}
|
|
}
|
|
|
|
/**************************************************************
|
|
* timeout
|
|
**************************************************************/
|
|
void
|
|
scsi_low_bus_idle(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
slp->sl_retry_sel = 0;
|
|
if (slp->sl_Tnexus == NULL)
|
|
scsi_low_start(slp);
|
|
}
|
|
|
|
static void
|
|
scsi_low_timeout(arg)
|
|
void *arg;
|
|
{
|
|
struct scsi_low_softc *slp = arg;
|
|
int s;
|
|
|
|
s = SCSI_LOW_SPLSCSI();
|
|
(void) scsi_low_timeout_check(slp);
|
|
(*slp->sl_osdep_fp->scsi_low_osdep_timeout)
|
|
(slp, SCSI_LOW_TIMEOUT_CH_IO, SCSI_LOW_TIMEOUT_START);
|
|
splx(s);
|
|
}
|
|
|
|
static int
|
|
scsi_low_timeout_check(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
struct slccb *cb = NULL; /* XXX */
|
|
|
|
/* selection restart */
|
|
if (slp->sl_retry_sel != 0)
|
|
{
|
|
slp->sl_retry_sel = 0;
|
|
if (slp->sl_Tnexus != NULL)
|
|
goto step1;
|
|
|
|
cb = TAILQ_FIRST(&slp->sl_start);
|
|
if (cb == NULL)
|
|
goto step1;
|
|
|
|
if (cb->ccb_selrcnt >= SCSI_LOW_MAX_SELECTION_RETRY)
|
|
{
|
|
cb->ccb_flags |= CCB_NORETRY;
|
|
cb->ccb_error |= SELTIMEOUTIO;
|
|
if (scsi_low_revoke_ccb(slp, cb, 1) != NULL)
|
|
panic("%s: ccb not finished", slp->sl_xname);
|
|
}
|
|
|
|
if (slp->sl_Tnexus == NULL)
|
|
scsi_low_start(slp);
|
|
}
|
|
|
|
/* call hardware timeout */
|
|
step1:
|
|
if (slp->sl_funcs->scsi_low_timeout != NULL)
|
|
{
|
|
(*slp->sl_funcs->scsi_low_timeout) (slp);
|
|
}
|
|
|
|
if (slp->sl_timeout_count ++ <
|
|
SCSI_LOW_TIMEOUT_CHECK_INTERVAL * SCSI_LOW_TIMEOUT_HZ)
|
|
return 0;
|
|
|
|
slp->sl_timeout_count = 0;
|
|
if (slp->sl_nio > 0)
|
|
{
|
|
if ((cb = slp->sl_Qnexus) != NULL)
|
|
{
|
|
cb->ccb_tc -= SCSI_LOW_TIMEOUT_CHECK_INTERVAL;
|
|
if (cb->ccb_tc < 0)
|
|
goto bus_reset;
|
|
}
|
|
else if (slp->sl_disc == 0)
|
|
{
|
|
if ((cb = TAILQ_FIRST(&slp->sl_start)) == NULL)
|
|
return 0;
|
|
|
|
cb->ccb_tc -= SCSI_LOW_TIMEOUT_CHECK_INTERVAL;
|
|
if (cb->ccb_tc < 0)
|
|
goto bus_reset;
|
|
}
|
|
else for (ti = TAILQ_FIRST(&slp->sl_titab); ti != NULL;
|
|
ti = TAILQ_NEXT(ti, ti_chain))
|
|
{
|
|
if (ti->ti_disc == 0)
|
|
continue;
|
|
|
|
for (li = LIST_FIRST(&ti->ti_litab); li != NULL;
|
|
li = LIST_NEXT(li, lun_chain))
|
|
{
|
|
for (cb = TAILQ_FIRST(&li->li_discq);
|
|
cb != NULL;
|
|
cb = TAILQ_NEXT(cb, ccb_chain))
|
|
{
|
|
cb->ccb_tc -=
|
|
SCSI_LOW_TIMEOUT_CHECK_INTERVAL;
|
|
if (cb->ccb_tc < 0)
|
|
goto bus_reset;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
else if ((slp->sl_flags & HW_POWERCTRL) != 0)
|
|
{
|
|
if ((slp->sl_flags & (HW_POWDOWN | HW_RESUME)) != 0)
|
|
return 0;
|
|
|
|
if (slp->sl_active != 0)
|
|
{
|
|
slp->sl_powc = SCSI_LOW_POWDOWN_TC;
|
|
slp->sl_active = 0;
|
|
return 0;
|
|
}
|
|
|
|
slp->sl_powc --;
|
|
if (slp->sl_powc < 0)
|
|
{
|
|
slp->sl_powc = SCSI_LOW_POWDOWN_TC;
|
|
slp->sl_flags |= HW_POWDOWN;
|
|
(*slp->sl_funcs->scsi_low_power)
|
|
(slp, SCSI_LOW_POWDOWN);
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
bus_reset:
|
|
cb->ccb_error |= TIMEOUTIO;
|
|
printf("%s: slccb (0x%lx) timeout!\n", slp->sl_xname, (u_long) cb);
|
|
scsi_low_info(slp, NULL, "scsi bus hangup. try to recover.");
|
|
scsi_low_init(slp, SCSI_LOW_RESTART_HARD);
|
|
scsi_low_start(slp);
|
|
return ERESTART;
|
|
}
|
|
|
|
|
|
static int
|
|
scsi_low_abort_ccb(slp, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
{
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
u_int msg;
|
|
|
|
if (cb == NULL)
|
|
return EINVAL;
|
|
if ((cb->ccb_omsgoutflag &
|
|
(SCSI_LOW_MSG_ABORT | SCSI_LOW_MSG_ABORT_QTAG)) != 0)
|
|
return EBUSY;
|
|
|
|
ti = cb->ti;
|
|
li = cb->li;
|
|
if (cb->ccb_tag == SCSI_LOW_UNKTAG)
|
|
msg = SCSI_LOW_MSG_ABORT;
|
|
else
|
|
msg = SCSI_LOW_MSG_ABORT_QTAG;
|
|
|
|
cb->ccb_error |= ABORTIO;
|
|
cb->ccb_flags |= CCB_NORETRY;
|
|
scsi_low_ccb_message_assert(cb, msg);
|
|
|
|
if (cb == slp->sl_Qnexus)
|
|
{
|
|
scsi_low_assert_msg(slp, ti, msg, 1);
|
|
}
|
|
else if ((cb->ccb_flags & CCB_DISCQ) != 0)
|
|
{
|
|
if (scsi_low_revoke_ccb(slp, cb, 0) == NULL)
|
|
panic("%s: revoked ccb done", slp->sl_xname);
|
|
|
|
cb->ccb_flags |= CCB_STARTQ;
|
|
TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
|
|
|
|
if (slp->sl_Tnexus == NULL)
|
|
scsi_low_start(slp);
|
|
}
|
|
else
|
|
{
|
|
if (scsi_low_revoke_ccb(slp, cb, 1) != NULL)
|
|
panic("%s: revoked ccb retried", slp->sl_xname);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************
|
|
* Generic SCSI INTERFACE
|
|
**************************************************************/
|
|
int
|
|
scsi_low_attach(slp, openings, ntargs, nluns, targsize, lunsize)
|
|
struct scsi_low_softc *slp;
|
|
int openings, ntargs, nluns, targsize, lunsize;
|
|
{
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
int s, i, nccb, rv;
|
|
|
|
#ifdef SCSI_LOW_INTERFACE_XS
|
|
slp->sl_osdep_fp = &scsi_low_osdep_funcs_xs;
|
|
#endif /* SCSI_LOW_INTERFACE_XS */
|
|
#ifdef SCSI_LOW_INTERFACE_CAM
|
|
slp->sl_osdep_fp = &scsi_low_osdep_funcs_cam;
|
|
#endif /* SCSI_LOW_INTERFACE_CAM */
|
|
|
|
if (slp->sl_osdep_fp == NULL)
|
|
panic("scsi_low: interface not spcified");
|
|
|
|
if (ntargs > SCSI_LOW_NTARGETS)
|
|
{
|
|
printf("scsi_low: %d targets are too large\n", ntargs);
|
|
printf("change kernel options SCSI_LOW_NTARGETS");
|
|
return EINVAL;
|
|
}
|
|
|
|
if (openings <= 0)
|
|
slp->sl_openings = (SCSI_LOW_NCCB / ntargs);
|
|
else
|
|
slp->sl_openings = openings;
|
|
slp->sl_ntargs = ntargs;
|
|
slp->sl_nluns = nluns;
|
|
slp->sl_max_retry = SCSI_LOW_MAX_RETRY;
|
|
|
|
if (lunsize < sizeof(struct lun_info))
|
|
lunsize = sizeof(struct lun_info);
|
|
|
|
if (targsize < sizeof(struct targ_info))
|
|
targsize = sizeof(struct targ_info);
|
|
|
|
slp->sl_targsize = targsize;
|
|
for (i = 0; i < ntargs; i ++)
|
|
{
|
|
ti = scsi_low_alloc_ti(slp, i);
|
|
ti->ti_lunsize = lunsize;
|
|
li = scsi_low_alloc_li(ti, 0, 1);
|
|
}
|
|
|
|
/* initialize queue */
|
|
nccb = openings * ntargs;
|
|
if (nccb >= SCSI_LOW_NCCB || nccb <= 0)
|
|
nccb = SCSI_LOW_NCCB;
|
|
scsi_low_init_ccbque(nccb);
|
|
TAILQ_INIT(&slp->sl_start);
|
|
|
|
/* call os depend attach */
|
|
s = SCSI_LOW_SPLSCSI();
|
|
rv = (*slp->sl_osdep_fp->scsi_low_osdep_attach) (slp);
|
|
if (rv != 0)
|
|
{
|
|
splx(s);
|
|
printf("%s: scsi_low_attach: osdep attach failed\n",
|
|
slp->sl_xname);
|
|
return EINVAL;
|
|
}
|
|
|
|
/* check hardware */
|
|
SCSI_LOW_DELAY(1000); /* wait for 1ms */
|
|
if (scsi_low_init(slp, SCSI_LOW_RESTART_HARD) != 0)
|
|
{
|
|
splx(s);
|
|
printf("%s: scsi_low_attach: initialization failed\n",
|
|
slp->sl_xname);
|
|
return EINVAL;
|
|
}
|
|
|
|
/* start watch dog */
|
|
slp->sl_timeout_count = 0;
|
|
(*slp->sl_osdep_fp->scsi_low_osdep_timeout)
|
|
(slp, SCSI_LOW_TIMEOUT_CH_IO, SCSI_LOW_TIMEOUT_START);
|
|
LIST_INSERT_HEAD(&sl_tab, slp, sl_chain);
|
|
|
|
/* fake call */
|
|
scsi_low_abort_ccb(slp, scsi_low_find_ccb(slp, 0, 0, NULL));
|
|
|
|
#ifdef SCSI_LOW_START_UP_CHECK
|
|
/* probing devices */
|
|
scsi_low_start_up(slp);
|
|
#endif /* SCSI_LOW_START_UP_CHECK */
|
|
|
|
/* call os depend attach done*/
|
|
(*slp->sl_osdep_fp->scsi_low_osdep_world_start) (slp);
|
|
splx(s);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
scsi_low_dettach(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
int s, rv;
|
|
|
|
s = SCSI_LOW_SPLSCSI();
|
|
if (scsi_low_is_busy(slp) != 0)
|
|
{
|
|
splx(s);
|
|
return EBUSY;
|
|
}
|
|
|
|
scsi_low_deactivate(slp);
|
|
|
|
rv = (*slp->sl_osdep_fp->scsi_low_osdep_dettach) (slp);
|
|
if (rv != 0)
|
|
{
|
|
splx(s);
|
|
return EBUSY;
|
|
}
|
|
|
|
scsi_low_free_ti(slp);
|
|
LIST_REMOVE(slp, sl_chain);
|
|
splx(s);
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************
|
|
* Generic enqueue
|
|
**************************************************************/
|
|
static int
|
|
scsi_low_enqueue(slp, ti, li, cb, flags, msg)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
struct slccb *cb;
|
|
u_int flags, msg;
|
|
{
|
|
|
|
cb->ti = ti;
|
|
cb->li = li;
|
|
|
|
scsi_low_ccb_message_assert(cb, msg);
|
|
|
|
cb->ccb_otag = cb->ccb_tag = SCSI_LOW_UNKTAG;
|
|
scsi_low_alloc_qtag(cb);
|
|
|
|
cb->ccb_flags = flags | CCB_STARTQ;
|
|
cb->ccb_tc = cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
|
|
cb->ccb_error |= PENDINGIO;
|
|
|
|
if ((flags & CCB_URGENT) != 0)
|
|
{
|
|
TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
|
|
}
|
|
else
|
|
{
|
|
TAILQ_INSERT_TAIL(&slp->sl_start, cb, ccb_chain);
|
|
}
|
|
|
|
slp->sl_nio ++;
|
|
|
|
if (slp->sl_Tnexus == NULL)
|
|
scsi_low_start(slp);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_message_enqueue(slp, ti, li, flags)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
u_int flags;
|
|
{
|
|
struct slccb *cb;
|
|
u_int tmsgflags;
|
|
|
|
tmsgflags = ti->ti_setup_msg;
|
|
ti->ti_setup_msg = 0;
|
|
|
|
flags |= CCB_NORETRY;
|
|
if ((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)
|
|
return ENOMEM;
|
|
|
|
cb->osdep = NULL;
|
|
cb->bp = NULL;
|
|
scsi_low_enqueue(slp, ti, li, cb, flags, tmsgflags);
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************
|
|
* Generic Start & Done
|
|
**************************************************************/
|
|
#define SLSC_MODE_SENSE_SHORT 0x1a
|
|
static u_int8_t ss_cmd[6] = {START_STOP, 0, 0, 0, SSS_START, 0};
|
|
static u_int8_t sms_cmd[6] = {SLSC_MODE_SENSE_SHORT, 0x08, 0x0a, 0,
|
|
sizeof(struct scsi_low_mode_sense_data), 0};
|
|
static u_int8_t inq_cmd[6] = {INQUIRY, 0, 0, 0,
|
|
sizeof(struct scsi_low_inq_data), 0};
|
|
static u_int8_t unit_ready_cmd[6];
|
|
static int scsi_low_setup_start(struct scsi_low_softc *, struct targ_info *, struct lun_info *, struct slccb *);
|
|
static int scsi_low_sense_abort_start(struct scsi_low_softc *, struct targ_info *, struct lun_info *, struct slccb *);
|
|
static int scsi_low_resume(struct scsi_low_softc *);
|
|
|
|
static void
|
|
scsi_low_unit_ready_cmd(cb)
|
|
struct slccb *cb;
|
|
{
|
|
|
|
cb->ccb_scp.scp_cmd = unit_ready_cmd;
|
|
cb->ccb_scp.scp_cmdlen = sizeof(unit_ready_cmd);
|
|
cb->ccb_scp.scp_datalen = 0;
|
|
cb->ccb_scp.scp_direction = SCSI_LOW_READ;
|
|
cb->ccb_tcmax = 15;
|
|
}
|
|
|
|
static int
|
|
scsi_low_sense_abort_start(slp, ti, li, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
struct slccb *cb;
|
|
{
|
|
|
|
cb->ccb_scp.scp_cmdlen = 6;
|
|
SCSI_LOW_BZERO(cb->ccb_scsi_cmd, cb->ccb_scp.scp_cmdlen);
|
|
cb->ccb_scsi_cmd[0] = REQUEST_SENSE;
|
|
cb->ccb_scsi_cmd[4] = sizeof(cb->ccb_sense);
|
|
cb->ccb_scp.scp_cmd = cb->ccb_scsi_cmd;
|
|
cb->ccb_scp.scp_data = (u_int8_t *) &cb->ccb_sense;
|
|
cb->ccb_scp.scp_datalen = sizeof(cb->ccb_sense);
|
|
cb->ccb_scp.scp_direction = SCSI_LOW_READ;
|
|
cb->ccb_tcmax = 15;
|
|
scsi_low_ccb_message_clear(cb);
|
|
if ((cb->ccb_flags & CCB_CLEARQ) != 0)
|
|
{
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
|
|
}
|
|
else
|
|
{
|
|
SCSI_LOW_BZERO(&cb->ccb_sense, sizeof(cb->ccb_sense));
|
|
#ifdef SCSI_LOW_NEGOTIATE_BEFORE_SENSE
|
|
scsi_low_assert_msg(slp, ti, ti->ti_setup_msg_done, 0);
|
|
#endif /* SCSI_LOW_NEGOTIATE_BEFORE_SENSE */
|
|
}
|
|
|
|
return SCSI_LOW_START_NO_QTAG;
|
|
}
|
|
|
|
static int
|
|
scsi_low_setup_start(slp, ti, li, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
struct slccb *cb;
|
|
{
|
|
|
|
switch(li->li_state)
|
|
{
|
|
case SCSI_LOW_LUN_SLEEP:
|
|
scsi_low_unit_ready_cmd(cb);
|
|
break;
|
|
|
|
case SCSI_LOW_LUN_START:
|
|
cb->ccb_scp.scp_cmd = ss_cmd;
|
|
cb->ccb_scp.scp_cmdlen = sizeof(ss_cmd);
|
|
cb->ccb_scp.scp_datalen = 0;
|
|
cb->ccb_scp.scp_direction = SCSI_LOW_READ;
|
|
cb->ccb_tcmax = 30;
|
|
break;
|
|
|
|
case SCSI_LOW_LUN_INQ:
|
|
cb->ccb_scp.scp_cmd = inq_cmd;
|
|
cb->ccb_scp.scp_cmdlen = sizeof(inq_cmd);
|
|
cb->ccb_scp.scp_data = (u_int8_t *)&li->li_inq;
|
|
cb->ccb_scp.scp_datalen = sizeof(li->li_inq);
|
|
cb->ccb_scp.scp_direction = SCSI_LOW_READ;
|
|
cb->ccb_tcmax = 15;
|
|
break;
|
|
|
|
case SCSI_LOW_LUN_MODEQ:
|
|
cb->ccb_scp.scp_cmd = sms_cmd;
|
|
cb->ccb_scp.scp_cmdlen = sizeof(sms_cmd);
|
|
cb->ccb_scp.scp_data = (u_int8_t *)&li->li_sms;
|
|
cb->ccb_scp.scp_datalen = sizeof(li->li_sms);
|
|
cb->ccb_scp.scp_direction = SCSI_LOW_READ;
|
|
cb->ccb_tcmax = 15;
|
|
return SCSI_LOW_START_QTAG;
|
|
|
|
default:
|
|
panic("%s: no setup phase", slp->sl_xname);
|
|
}
|
|
|
|
return SCSI_LOW_START_NO_QTAG;
|
|
}
|
|
|
|
static int
|
|
scsi_low_resume(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
if (slp->sl_flags & HW_RESUME)
|
|
return EJUSTRETURN;
|
|
slp->sl_flags &= ~HW_POWDOWN;
|
|
if (slp->sl_funcs->scsi_low_power != NULL)
|
|
{
|
|
slp->sl_flags |= HW_RESUME;
|
|
slp->sl_rstep = 0;
|
|
(*slp->sl_funcs->scsi_low_power) (slp, SCSI_LOW_ENGAGE);
|
|
(*slp->sl_osdep_fp->scsi_low_osdep_timeout)
|
|
(slp, SCSI_LOW_TIMEOUT_CH_ENGAGE,
|
|
SCSI_LOW_TIMEOUT_START);
|
|
return EJUSTRETURN;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
scsi_low_start(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
struct slccb *cb;
|
|
int rv;
|
|
|
|
/* check hardware exists or under initializations ? */
|
|
if ((slp->sl_flags & (HW_INACTIVE | HW_INITIALIZING)) != 0)
|
|
return;
|
|
|
|
/* check hardware power up ? */
|
|
if ((slp->sl_flags & HW_POWERCTRL) != 0)
|
|
{
|
|
slp->sl_active ++;
|
|
if (slp->sl_flags & (HW_POWDOWN | HW_RESUME))
|
|
{
|
|
if (scsi_low_resume(slp) == EJUSTRETURN)
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* setup nexus */
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if (slp->sl_Tnexus || slp->sl_Lnexus || slp->sl_Qnexus)
|
|
{
|
|
scsi_low_info(slp, NULL, "NEXUS INCOSISTENT");
|
|
panic("%s: inconsistent", slp->sl_xname);
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
for (cb = TAILQ_FIRST(&slp->sl_start); cb != NULL;
|
|
cb = TAILQ_NEXT(cb, ccb_chain))
|
|
{
|
|
li = cb->li;
|
|
|
|
if (li->li_disc == 0)
|
|
{
|
|
goto scsi_low_cmd_start;
|
|
}
|
|
else if (li->li_nqio > 0)
|
|
{
|
|
if (li->li_nqio < li->li_maxnqio ||
|
|
(cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
|
|
goto scsi_low_cmd_start;
|
|
}
|
|
}
|
|
return;
|
|
|
|
scsi_low_cmd_start:
|
|
cb->ccb_flags &= ~CCB_STARTQ;
|
|
TAILQ_REMOVE(&slp->sl_start, cb, ccb_chain);
|
|
ti = cb->ti;
|
|
|
|
/* clear all error flag bits (for restart) */
|
|
cb->ccb_error = 0;
|
|
cb->ccb_datalen = -1;
|
|
cb->ccb_scp.scp_status = ST_UNKNOWN;
|
|
|
|
/* setup nexus pointer */
|
|
slp->sl_Qnexus = cb;
|
|
slp->sl_Lnexus = li;
|
|
slp->sl_Tnexus = ti;
|
|
|
|
/* initialize msgsys */
|
|
scsi_low_init_msgsys(slp, ti);
|
|
|
|
/* exec cmd */
|
|
if ((cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
|
|
{
|
|
/* CA state or forced abort */
|
|
rv = scsi_low_sense_abort_start(slp, ti, li, cb);
|
|
}
|
|
else if (li->li_state >= SCSI_LOW_LUN_OK)
|
|
{
|
|
cb->ccb_flags &= ~CCB_INTERNAL;
|
|
rv = (*slp->sl_osdep_fp->scsi_low_osdep_ccb_setup) (slp, cb);
|
|
if (cb->ccb_msgoutflag != 0)
|
|
{
|
|
scsi_low_ccb_message_exec(slp, cb);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
cb->ccb_flags |= CCB_INTERNAL;
|
|
rv = scsi_low_setup_start(slp, ti, li, cb);
|
|
}
|
|
|
|
/* allocate qtag */
|
|
#define SCSI_LOW_QTAG_OK (SCSI_LOW_QTAG | SCSI_LOW_DISC)
|
|
|
|
if (rv == SCSI_LOW_START_QTAG &&
|
|
(li->li_flags & SCSI_LOW_QTAG_OK) == SCSI_LOW_QTAG_OK &&
|
|
li->li_maxnqio > 0)
|
|
{
|
|
u_int qmsg;
|
|
|
|
scsi_low_activate_qtag(cb);
|
|
if ((scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
|
|
SCSI_LOW_CMD_ORDERED_QTAG) != 0)
|
|
qmsg = SCSI_LOW_MSG_ORDERED_QTAG;
|
|
else if ((cb->ccb_flags & CCB_URGENT) != 0)
|
|
qmsg = SCSI_LOW_MSG_HEAD_QTAG;
|
|
else
|
|
qmsg = SCSI_LOW_MSG_SIMPLE_QTAG;
|
|
scsi_low_assert_msg(slp, ti, qmsg, 0);
|
|
}
|
|
|
|
/* timeout */
|
|
if (cb->ccb_tcmax < SCSI_LOW_MIN_TOUT)
|
|
cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
|
|
cb->ccb_tc = cb->ccb_tcmax;
|
|
|
|
/* setup saved scsi data pointer */
|
|
cb->ccb_sscp = cb->ccb_scp;
|
|
|
|
/* setup current scsi pointer */
|
|
slp->sl_scp = cb->ccb_sscp;
|
|
slp->sl_error = cb->ccb_error;
|
|
|
|
/* assert always an identify msg */
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_IDENTIFY, 0);
|
|
|
|
/* debug section */
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
scsi_low_msg_log_init(&ti->ti_log_msgin);
|
|
scsi_low_msg_log_init(&ti->ti_log_msgout);
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
/* selection start */
|
|
slp->sl_selid = cb;
|
|
rv = ((*slp->sl_funcs->scsi_low_start_bus) (slp, cb));
|
|
if (rv == SCSI_LOW_START_OK)
|
|
{
|
|
#ifdef SCSI_LOW_STATICS
|
|
scsi_low_statics.nexus_win ++;
|
|
#endif /* SCSI_LOW_STATICS */
|
|
return;
|
|
}
|
|
|
|
scsi_low_arbit_fail(slp, cb);
|
|
#ifdef SCSI_LOW_STATICS
|
|
scsi_low_statics.nexus_fail ++;
|
|
#endif /* SCSI_LOW_STATICS */
|
|
}
|
|
|
|
void
|
|
scsi_low_arbit_fail(slp, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
{
|
|
struct targ_info *ti = cb->ti;
|
|
|
|
scsi_low_deactivate_qtag(cb);
|
|
scsi_low_ccb_message_retry(cb);
|
|
cb->ccb_flags |= CCB_STARTQ;
|
|
TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
|
|
|
|
scsi_low_bus_release(slp, ti);
|
|
|
|
cb->ccb_selrcnt ++;
|
|
if (slp->sl_disc == 0)
|
|
{
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
printf("%s: try selection again\n", slp->sl_xname);
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
slp->sl_retry_sel = 1;
|
|
}
|
|
}
|
|
|
|
static void
|
|
scsi_low_bus_release(slp, ti)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
{
|
|
|
|
if (ti->ti_disc > 0)
|
|
{
|
|
SCSI_LOW_SETUP_PHASE(ti, PH_DISC);
|
|
}
|
|
else
|
|
{
|
|
SCSI_LOW_SETUP_PHASE(ti, PH_NULL);
|
|
}
|
|
|
|
/* clear all nexus pointer */
|
|
slp->sl_Qnexus = NULL;
|
|
slp->sl_Lnexus = NULL;
|
|
slp->sl_Tnexus = NULL;
|
|
|
|
/* clear selection assert */
|
|
slp->sl_selid = NULL;
|
|
|
|
/* clear nexus data */
|
|
slp->sl_scp.scp_direction = SCSI_LOW_RWUNK;
|
|
|
|
/* clear phase change counter */
|
|
slp->sl_ph_count = 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_setup_done(slp, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
{
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
|
|
ti = cb->ti;
|
|
li = cb->li;
|
|
|
|
if (cb->ccb_rcnt >= slp->sl_max_retry)
|
|
{
|
|
cb->ccb_error |= ABORTIO;
|
|
return SCSI_LOW_DONE_COMPLETE;
|
|
}
|
|
|
|
/* XXX: special huck for selection timeout */
|
|
if (li->li_state == SCSI_LOW_LUN_SLEEP &&
|
|
(cb->ccb_error & SELTIMEOUTIO) != 0)
|
|
{
|
|
cb->ccb_error |= ABORTIO;
|
|
return SCSI_LOW_DONE_COMPLETE;
|
|
}
|
|
|
|
switch(li->li_state)
|
|
{
|
|
case SCSI_LOW_LUN_INQ:
|
|
if (cb->ccb_error != 0)
|
|
{
|
|
li->li_diskflags &=
|
|
~(SCSI_LOW_DISK_LINK | SCSI_LOW_DISK_QTAG);
|
|
if (li->li_lun > 0)
|
|
goto resume;
|
|
ti->ti_diskflags &=
|
|
~(SCSI_LOW_DISK_SYNC | SCSI_LOW_DISK_WIDE);
|
|
}
|
|
else if ((li->li_inq.sd_version & 7) >= 2 ||
|
|
(li->li_inq.sd_len >= 4))
|
|
{
|
|
if ((li->li_inq.sd_support & 0x2) == 0)
|
|
li->li_diskflags &= ~SCSI_LOW_DISK_QTAG;
|
|
if ((li->li_inq.sd_support & 0x8) == 0)
|
|
li->li_diskflags &= ~SCSI_LOW_DISK_LINK;
|
|
if (li->li_lun > 0)
|
|
goto resume;
|
|
if ((li->li_inq.sd_support & 0x10) == 0)
|
|
ti->ti_diskflags &= ~SCSI_LOW_DISK_SYNC;
|
|
if ((li->li_inq.sd_support & 0x20) == 0)
|
|
ti->ti_diskflags &= ~SCSI_LOW_DISK_WIDE_16;
|
|
if ((li->li_inq.sd_support & 0x40) == 0)
|
|
ti->ti_diskflags &= ~SCSI_LOW_DISK_WIDE_32;
|
|
}
|
|
else
|
|
{
|
|
li->li_diskflags &=
|
|
~(SCSI_LOW_DISK_QTAG | SCSI_LOW_DISK_LINK);
|
|
if (li->li_lun > 0)
|
|
goto resume;
|
|
ti->ti_diskflags &= ~SCSI_LOW_DISK_WIDE;
|
|
}
|
|
ti->ti_flags_valid |= SCSI_LOW_TARG_FLAGS_DISK_VALID;
|
|
resume:
|
|
scsi_low_calcf_target(ti);
|
|
scsi_low_calcf_lun(li);
|
|
break;
|
|
|
|
case SCSI_LOW_LUN_MODEQ:
|
|
if (cb->ccb_error != 0)
|
|
{
|
|
if (cb->ccb_error & SENSEIO)
|
|
{
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (scsi_low_debug & SCSI_LOW_DEBUG_SENSE)
|
|
{
|
|
int error_code, sense_key, asc, ascq;
|
|
|
|
scsi_extract_sense(&cb->ccb_sense,
|
|
&error_code,
|
|
&sense_key,
|
|
&asc,
|
|
&ascq);
|
|
printf("SENSE: [%x][%x][%x][%x]\n",
|
|
error_code, sense_key, asc,
|
|
ascq);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
}
|
|
else
|
|
{
|
|
li->li_diskflags &= ~SCSI_LOW_DISK_QTAG;
|
|
}
|
|
}
|
|
else if ((li->li_sms.sms_cmp.cmp_page & 0x3f) == 0x0a)
|
|
{
|
|
if (li->li_sms.sms_cmp.cmp_qc & 0x02)
|
|
li->li_qflags |= SCSI_LOW_QFLAG_CA_QCLEAR;
|
|
else
|
|
li->li_qflags &= ~SCSI_LOW_QFLAG_CA_QCLEAR;
|
|
if ((li->li_sms.sms_cmp.cmp_qc & 0x01) != 0)
|
|
li->li_diskflags &= ~SCSI_LOW_DISK_QTAG;
|
|
}
|
|
li->li_flags_valid |= SCSI_LOW_LUN_FLAGS_DISK_VALID;
|
|
scsi_low_calcf_lun(li);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
li->li_state ++;
|
|
if (li->li_state == SCSI_LOW_LUN_OK)
|
|
{
|
|
scsi_low_calcf_target(ti);
|
|
scsi_low_calcf_lun(li);
|
|
if (li->li_flags_valid == SCSI_LOW_LUN_FLAGS_ALL_VALID &&
|
|
(slp->sl_show_result & SHOW_CALCF_RES) != 0)
|
|
{
|
|
scsi_low_calcf_show(li);
|
|
}
|
|
}
|
|
|
|
cb->ccb_rcnt --;
|
|
return SCSI_LOW_DONE_RETRY;
|
|
}
|
|
|
|
static int
|
|
scsi_low_done(slp, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
{
|
|
int rv;
|
|
|
|
if (cb->ccb_error == 0)
|
|
{
|
|
if ((cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
|
|
{
|
|
#ifdef SCSI_LOW_QCLEAR_AFTER_CA
|
|
/* XXX:
|
|
* SCSI-2 draft suggests
|
|
* page 0x0a QErr bit determins if
|
|
* the target aborts or continues
|
|
* the queueing io's after CA state resolved.
|
|
* However many targets seem not to support
|
|
* the page 0x0a. Thus we should manually clear the
|
|
* queuing io's after CA state.
|
|
*/
|
|
if ((cb->ccb_flags & CCB_CLEARQ) == 0)
|
|
{
|
|
cb->ccb_rcnt --;
|
|
cb->ccb_flags |= CCB_CLEARQ;
|
|
goto retry;
|
|
}
|
|
#endif /* SCSI_LOW_QCLEAR_AFTER_CA */
|
|
|
|
if ((cb->ccb_flags & CCB_SENSE) != 0)
|
|
cb->ccb_error |= (SENSEIO | ABORTIO);
|
|
cb->ccb_flags &= ~(CCB_SENSE | CCB_CLEARQ);
|
|
}
|
|
else switch (cb->ccb_sscp.scp_status)
|
|
{
|
|
case ST_GOOD:
|
|
case ST_MET:
|
|
case ST_INTERGOOD:
|
|
case ST_INTERMET:
|
|
if (cb->ccb_datalen == 0 ||
|
|
cb->ccb_scp.scp_datalen == 0)
|
|
break;
|
|
|
|
if (cb->ccb_scp.scp_cmdlen > 0 &&
|
|
(scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
|
|
SCSI_LOW_CMD_RESIDUAL_CHK) == 0)
|
|
break;
|
|
|
|
cb->ccb_error |= PDMAERR;
|
|
break;
|
|
|
|
case ST_BUSY:
|
|
case ST_QUEFULL:
|
|
cb->ccb_error |= (BUSYERR | STATERR);
|
|
break;
|
|
|
|
case ST_CONFLICT:
|
|
cb->ccb_error |= (STATERR | ABORTIO);
|
|
break;
|
|
|
|
case ST_CHKCOND:
|
|
case ST_CMDTERM:
|
|
if (cb->ccb_flags & (CCB_AUTOSENSE | CCB_INTERNAL))
|
|
{
|
|
cb->ccb_rcnt --;
|
|
cb->ccb_flags |= CCB_SENSE;
|
|
goto retry;
|
|
}
|
|
cb->ccb_error |= (UACAERR | STATERR | ABORTIO);
|
|
break;
|
|
|
|
case ST_UNKNOWN:
|
|
default:
|
|
cb->ccb_error |= FATALIO;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (cb->ccb_flags & CCB_SENSE)
|
|
{
|
|
cb->ccb_error |= (SENSEERR | ABORTIO);
|
|
}
|
|
cb->ccb_flags &= ~(CCB_CLEARQ | CCB_SENSE);
|
|
}
|
|
|
|
/* internal ccb */
|
|
if ((cb->ccb_flags & CCB_INTERNAL) != 0)
|
|
{
|
|
if (scsi_low_setup_done(slp, cb) == SCSI_LOW_DONE_RETRY)
|
|
goto retry;
|
|
}
|
|
|
|
/* check a ccb msgout flag */
|
|
if (cb->ccb_omsgoutflag != 0)
|
|
{
|
|
#define SCSI_LOW_MSG_ABORT_OK (SCSI_LOW_MSG_ABORT | \
|
|
SCSI_LOW_MSG_ABORT_QTAG | \
|
|
SCSI_LOW_MSG_CLEAR_QTAG | \
|
|
SCSI_LOW_MSG_TERMIO)
|
|
|
|
if ((cb->ccb_omsgoutflag & SCSI_LOW_MSG_ABORT_OK) != 0)
|
|
{
|
|
cb->ccb_error |= ABORTIO;
|
|
}
|
|
}
|
|
|
|
/* call OS depend done */
|
|
if (cb->osdep != NULL)
|
|
{
|
|
rv = (*slp->sl_osdep_fp->scsi_low_osdep_done) (slp, cb);
|
|
if (rv == EJUSTRETURN)
|
|
goto retry;
|
|
}
|
|
else if (cb->ccb_error != 0)
|
|
{
|
|
if (cb->ccb_rcnt >= slp->sl_max_retry)
|
|
cb->ccb_error |= ABORTIO;
|
|
|
|
if ((cb->ccb_flags & CCB_NORETRY) == 0 &&
|
|
(cb->ccb_error & ABORTIO) == 0)
|
|
goto retry;
|
|
}
|
|
|
|
/* free our target */
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_DONE, cb->ti->ti_id) != 0)
|
|
{
|
|
printf(">> SCSI_LOW_DONE_COMPLETE ===============\n");
|
|
scsi_low_print(slp, NULL);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
|
|
scsi_low_deactivate_qtag(cb);
|
|
scsi_low_dealloc_qtag(cb);
|
|
scsi_low_free_ccb(cb);
|
|
slp->sl_nio --;
|
|
return SCSI_LOW_DONE_COMPLETE;
|
|
|
|
retry:
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_DONE, cb->ti->ti_id) != 0)
|
|
{
|
|
printf("** SCSI_LOW_DONE_RETRY ===============\n");
|
|
scsi_low_print(slp, NULL);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
|
|
cb->ccb_rcnt ++;
|
|
scsi_low_deactivate_qtag(cb);
|
|
scsi_low_ccb_message_retry(cb);
|
|
return SCSI_LOW_DONE_RETRY;
|
|
}
|
|
|
|
/**************************************************************
|
|
* Reset
|
|
**************************************************************/
|
|
static void
|
|
scsi_low_reset_nexus_target(slp, ti, fdone)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
int fdone;
|
|
{
|
|
struct lun_info *li;
|
|
|
|
for (li = LIST_FIRST(&ti->ti_litab); li != NULL;
|
|
li = LIST_NEXT(li, lun_chain))
|
|
{
|
|
scsi_low_reset_nexus_lun(slp, li, fdone);
|
|
li->li_state = SCSI_LOW_LUN_SLEEP;
|
|
li->li_maxnqio = 0;
|
|
}
|
|
|
|
ti->ti_disc = 0;
|
|
ti->ti_setup_msg = 0;
|
|
ti->ti_setup_msg_done = 0;
|
|
|
|
ti->ti_osynch.offset = ti->ti_osynch.period = 0;
|
|
ti->ti_owidth = SCSI_LOW_BUS_WIDTH_8;
|
|
|
|
ti->ti_diskflags = SCSI_LOW_DISK_TFLAGS;
|
|
ti->ti_flags_valid &= ~SCSI_LOW_TARG_FLAGS_DISK_VALID;
|
|
|
|
if (slp->sl_funcs->scsi_low_targ_init != NULL)
|
|
{
|
|
((*slp->sl_funcs->scsi_low_targ_init)
|
|
(slp, ti, SCSI_LOW_INFO_REVOKE));
|
|
}
|
|
scsi_low_calcf_target(ti);
|
|
|
|
for (li = LIST_FIRST(&ti->ti_litab); li != NULL;
|
|
li = LIST_NEXT(li, lun_chain))
|
|
{
|
|
li->li_flags = 0;
|
|
|
|
li->li_diskflags = SCSI_LOW_DISK_LFLAGS;
|
|
li->li_flags_valid &= ~SCSI_LOW_LUN_FLAGS_DISK_VALID;
|
|
|
|
if (slp->sl_funcs->scsi_low_lun_init != NULL)
|
|
{
|
|
((*slp->sl_funcs->scsi_low_lun_init)
|
|
(slp, ti, li, SCSI_LOW_INFO_REVOKE));
|
|
}
|
|
scsi_low_calcf_lun(li);
|
|
}
|
|
}
|
|
|
|
static void
|
|
scsi_low_reset_nexus(slp, fdone)
|
|
struct scsi_low_softc *slp;
|
|
int fdone;
|
|
{
|
|
struct targ_info *ti;
|
|
struct slccb *cb, *topcb;
|
|
|
|
if ((cb = slp->sl_Qnexus) != NULL)
|
|
{
|
|
topcb = scsi_low_revoke_ccb(slp, cb, fdone);
|
|
}
|
|
else
|
|
{
|
|
topcb = NULL;
|
|
}
|
|
|
|
for (ti = TAILQ_FIRST(&slp->sl_titab); ti != NULL;
|
|
ti = TAILQ_NEXT(ti, ti_chain))
|
|
{
|
|
scsi_low_reset_nexus_target(slp, ti, fdone);
|
|
scsi_low_bus_release(slp, ti);
|
|
scsi_low_init_msgsys(slp, ti);
|
|
}
|
|
|
|
if (topcb != NULL)
|
|
{
|
|
topcb->ccb_flags |= CCB_STARTQ;
|
|
TAILQ_INSERT_HEAD(&slp->sl_start, topcb, ccb_chain);
|
|
}
|
|
|
|
slp->sl_disc = 0;
|
|
slp->sl_retry_sel = 0;
|
|
slp->sl_flags &= ~HW_PDMASTART;
|
|
}
|
|
|
|
/* misc */
|
|
static int tw_pos;
|
|
static char tw_chars[] = "|/-\\";
|
|
#define TWIDDLEWAIT 10000
|
|
|
|
static void
|
|
scsi_low_twiddle_wait(void)
|
|
{
|
|
|
|
cnputc('\b');
|
|
cnputc(tw_chars[tw_pos++]);
|
|
tw_pos %= (sizeof(tw_chars) - 1);
|
|
SCSI_LOW_DELAY(TWIDDLEWAIT);
|
|
}
|
|
|
|
void
|
|
scsi_low_bus_reset(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
int i;
|
|
|
|
(*slp->sl_funcs->scsi_low_bus_reset) (slp);
|
|
|
|
printf("%s: try to reset scsi bus ", slp->sl_xname);
|
|
for (i = 0; i <= SCSI2_RESET_DELAY / TWIDDLEWAIT ; i++)
|
|
scsi_low_twiddle_wait();
|
|
cnputc('\b');
|
|
printf("\n");
|
|
}
|
|
|
|
int
|
|
scsi_low_restart(slp, flags, s)
|
|
struct scsi_low_softc *slp;
|
|
int flags;
|
|
u_char *s;
|
|
{
|
|
int error;
|
|
|
|
if (s != NULL)
|
|
printf("%s: scsi bus restart. reason: %s\n", slp->sl_xname, s);
|
|
|
|
if ((error = scsi_low_init(slp, flags)) != 0)
|
|
return error;
|
|
|
|
scsi_low_start(slp);
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************
|
|
* disconnect and reselect
|
|
**************************************************************/
|
|
#define MSGCMD_LUN(msg) (msg & 0x07)
|
|
|
|
static struct slccb *
|
|
scsi_low_establish_ccb(ti, li, tag)
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
scsi_low_tag_t tag;
|
|
{
|
|
struct scsi_low_softc *slp = ti->ti_sc;
|
|
struct slccb *cb;
|
|
|
|
if (li == NULL)
|
|
return NULL;
|
|
|
|
cb = TAILQ_FIRST(&li->li_discq);
|
|
for ( ; cb != NULL; cb = TAILQ_NEXT(cb, ccb_chain))
|
|
if (cb->ccb_tag == tag)
|
|
goto found;
|
|
return cb;
|
|
|
|
/*
|
|
* establish our ccb nexus
|
|
*/
|
|
found:
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_NEXUS_CHECK, ti->ti_id) != 0)
|
|
{
|
|
printf("%s: nexus(0x%lx) abort check start\n",
|
|
slp->sl_xname, (u_long) cb);
|
|
cb->ccb_flags |= (CCB_NORETRY | CCB_SILENT);
|
|
scsi_low_revoke_ccb(slp, cb, 1);
|
|
return NULL;
|
|
}
|
|
|
|
if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ATTEN_CHECK, ti->ti_id) != 0)
|
|
{
|
|
if (cb->ccb_omsgoutflag == 0)
|
|
scsi_low_ccb_message_assert(cb, SCSI_LOW_MSG_NOOP);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
|
|
TAILQ_REMOVE(&li->li_discq, cb, ccb_chain);
|
|
cb->ccb_flags &= ~CCB_DISCQ;
|
|
slp->sl_Qnexus = cb;
|
|
|
|
slp->sl_scp = cb->ccb_sscp;
|
|
slp->sl_error |= cb->ccb_error;
|
|
|
|
slp->sl_disc --;
|
|
ti->ti_disc --;
|
|
li->li_disc --;
|
|
|
|
/* inform "ccb nexus established" to the host driver */
|
|
(*slp->sl_funcs->scsi_low_establish_ccb_nexus) (slp);
|
|
|
|
/* check msg */
|
|
if (cb->ccb_msgoutflag != 0)
|
|
{
|
|
scsi_low_ccb_message_exec(slp, cb);
|
|
}
|
|
|
|
return cb;
|
|
}
|
|
|
|
struct targ_info *
|
|
scsi_low_reselected(slp, targ)
|
|
struct scsi_low_softc *slp;
|
|
u_int targ;
|
|
{
|
|
struct targ_info *ti;
|
|
struct slccb *cb;
|
|
u_char *s;
|
|
|
|
/*
|
|
* Check select vs reselected collision.
|
|
*/
|
|
|
|
if ((cb = slp->sl_selid) != NULL)
|
|
{
|
|
scsi_low_arbit_fail(slp, cb);
|
|
#ifdef SCSI_LOW_STATICS
|
|
scsi_low_statics.nexus_conflict ++;
|
|
#endif /* SCSI_LOW_STATICS */
|
|
}
|
|
|
|
/*
|
|
* Check if no current active nexus.
|
|
*/
|
|
if (slp->sl_Tnexus != NULL)
|
|
{
|
|
s = "host busy";
|
|
goto world_restart;
|
|
}
|
|
|
|
/*
|
|
* Check a valid target id asserted ?
|
|
*/
|
|
if (targ >= slp->sl_ntargs || targ == slp->sl_hostid)
|
|
{
|
|
s = "scsi id illegal";
|
|
goto world_restart;
|
|
}
|
|
|
|
/*
|
|
* Check the target scsi status.
|
|
*/
|
|
ti = slp->sl_ti[targ];
|
|
if (ti->ti_phase != PH_DISC && ti->ti_phase != PH_NULL)
|
|
{
|
|
s = "phase mismatch";
|
|
goto world_restart;
|
|
}
|
|
|
|
/*
|
|
* Setup init msgsys
|
|
*/
|
|
slp->sl_error = 0;
|
|
scsi_low_init_msgsys(slp, ti);
|
|
|
|
/*
|
|
* Establish our target nexus
|
|
*/
|
|
SCSI_LOW_SETUP_PHASE(ti, PH_RESEL);
|
|
slp->sl_Tnexus = ti;
|
|
#ifdef SCSI_LOW_STATICS
|
|
scsi_low_statics.nexus_reselected ++;
|
|
#endif /* SCSI_LOW_STATICS */
|
|
return ti;
|
|
|
|
world_restart:
|
|
printf("%s: reselect(%x:unknown) %s\n", slp->sl_xname, targ, s);
|
|
scsi_low_restart(slp, SCSI_LOW_RESTART_HARD,
|
|
"reselect: scsi world confused");
|
|
return NULL;
|
|
}
|
|
|
|
/**************************************************************
|
|
* cmd out pointer setup
|
|
**************************************************************/
|
|
int
|
|
scsi_low_cmd(slp, ti)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
{
|
|
struct slccb *cb = slp->sl_Qnexus;
|
|
|
|
slp->sl_ph_count ++;
|
|
if (cb == NULL)
|
|
{
|
|
/*
|
|
* no ccb, abort!
|
|
*/
|
|
slp->sl_scp.scp_cmd = (u_int8_t *) &unit_ready_cmd;
|
|
slp->sl_scp.scp_cmdlen = sizeof(unit_ready_cmd);
|
|
slp->sl_scp.scp_datalen = 0;
|
|
slp->sl_scp.scp_direction = SCSI_LOW_READ;
|
|
slp->sl_error |= FATALIO;
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
|
|
SCSI_LOW_INFO(slp, ti, "CMDOUT: ccb nexus not found");
|
|
return EINVAL;
|
|
}
|
|
else
|
|
{
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_CMDLNK_CHECK, ti->ti_id))
|
|
{
|
|
scsi_low_test_cmdlnk(slp, cb);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************
|
|
* data out pointer setup
|
|
**************************************************************/
|
|
int
|
|
scsi_low_data(slp, ti, bp, direction)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
struct buf **bp;
|
|
int direction;
|
|
{
|
|
struct slccb *cb = slp->sl_Qnexus;
|
|
|
|
if (cb != NULL && direction == cb->ccb_sscp.scp_direction)
|
|
{
|
|
*bp = cb->bp;
|
|
return 0;
|
|
}
|
|
|
|
slp->sl_error |= (FATALIO | PDMAERR);
|
|
slp->sl_scp.scp_datalen = 0;
|
|
slp->sl_scp.scp_direction = direction;
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
|
|
if (ti->ti_ophase != ti->ti_phase)
|
|
{
|
|
char *s;
|
|
|
|
if (cb == NULL)
|
|
s = "DATA PHASE: ccb nexus not found";
|
|
else
|
|
s = "DATA PHASE: xfer direction mismatch";
|
|
SCSI_LOW_INFO(slp, ti, s);
|
|
}
|
|
|
|
*bp = NULL;
|
|
return EINVAL;
|
|
}
|
|
|
|
/**************************************************************
|
|
* MSG_SYS
|
|
**************************************************************/
|
|
#define MSGINPTR_CLR(ti) {(ti)->ti_msginptr = 0; (ti)->ti_msginlen = 0;}
|
|
#define MSGIN_PERIOD(ti) ((ti)->ti_msgin[3])
|
|
#define MSGIN_OFFSET(ti) ((ti)->ti_msgin[4])
|
|
#define MSGIN_WIDTHP(ti) ((ti)->ti_msgin[3])
|
|
#define MSGIN_DATA_LAST 0x30
|
|
|
|
static int scsi_low_errfunc_synch(struct scsi_low_softc *, u_int);
|
|
static int scsi_low_errfunc_wide(struct scsi_low_softc *, u_int);
|
|
static int scsi_low_errfunc_identify(struct scsi_low_softc *, u_int);
|
|
static int scsi_low_errfunc_qtag(struct scsi_low_softc *, u_int);
|
|
|
|
static int scsi_low_msgfunc_synch(struct scsi_low_softc *);
|
|
static int scsi_low_msgfunc_wide(struct scsi_low_softc *);
|
|
static int scsi_low_msgfunc_identify(struct scsi_low_softc *);
|
|
static int scsi_low_msgfunc_abort(struct scsi_low_softc *);
|
|
static int scsi_low_msgfunc_qabort(struct scsi_low_softc *);
|
|
static int scsi_low_msgfunc_qtag(struct scsi_low_softc *);
|
|
static int scsi_low_msgfunc_reset(struct scsi_low_softc *);
|
|
|
|
struct scsi_low_msgout_data {
|
|
u_int md_flags;
|
|
u_int8_t md_msg;
|
|
int (*md_msgfunc)(struct scsi_low_softc *);
|
|
int (*md_errfunc)(struct scsi_low_softc *, u_int);
|
|
#define MSG_RELEASE_ATN 0x0001
|
|
u_int md_condition;
|
|
};
|
|
|
|
struct scsi_low_msgout_data scsi_low_msgout_data[] = {
|
|
/* 0 */ {SCSI_LOW_MSG_RESET, MSG_RESET, scsi_low_msgfunc_reset, NULL, MSG_RELEASE_ATN},
|
|
/* 1 */ {SCSI_LOW_MSG_REJECT, MSG_REJECT, NULL, NULL, MSG_RELEASE_ATN},
|
|
/* 2 */ {SCSI_LOW_MSG_PARITY, MSG_PARITY, NULL, NULL, MSG_RELEASE_ATN},
|
|
/* 3 */ {SCSI_LOW_MSG_ERROR, MSG_I_ERROR, NULL, NULL, MSG_RELEASE_ATN},
|
|
/* 4 */ {SCSI_LOW_MSG_IDENTIFY, MSG_IDENTIFY, scsi_low_msgfunc_identify, scsi_low_errfunc_identify, 0},
|
|
/* 5 */ {SCSI_LOW_MSG_ABORT, MSG_ABORT, scsi_low_msgfunc_abort, NULL, MSG_RELEASE_ATN},
|
|
/* 6 */ {SCSI_LOW_MSG_TERMIO, MSG_TERM_IO, NULL, NULL, MSG_RELEASE_ATN},
|
|
/* 7 */ {SCSI_LOW_MSG_SIMPLE_QTAG, MSG_SIMPLE_QTAG, scsi_low_msgfunc_qtag, scsi_low_errfunc_qtag, 0},
|
|
/* 8 */ {SCSI_LOW_MSG_ORDERED_QTAG, MSG_ORDERED_QTAG, scsi_low_msgfunc_qtag, scsi_low_errfunc_qtag, 0},
|
|
/* 9 */{SCSI_LOW_MSG_HEAD_QTAG, MSG_HEAD_QTAG, scsi_low_msgfunc_qtag, scsi_low_errfunc_qtag, 0},
|
|
/* 10 */ {SCSI_LOW_MSG_ABORT_QTAG, MSG_ABORT_QTAG, scsi_low_msgfunc_qabort, NULL, MSG_RELEASE_ATN},
|
|
/* 11 */ {SCSI_LOW_MSG_CLEAR_QTAG, MSG_CLEAR_QTAG, scsi_low_msgfunc_abort, NULL, MSG_RELEASE_ATN},
|
|
/* 12 */{SCSI_LOW_MSG_WIDE, MSG_EXTEND, scsi_low_msgfunc_wide, scsi_low_errfunc_wide, MSG_RELEASE_ATN},
|
|
/* 13 */{SCSI_LOW_MSG_SYNCH, MSG_EXTEND, scsi_low_msgfunc_synch, scsi_low_errfunc_synch, MSG_RELEASE_ATN},
|
|
/* 14 */{SCSI_LOW_MSG_NOOP, MSG_NOOP, NULL, NULL, MSG_RELEASE_ATN},
|
|
/* 15 */{SCSI_LOW_MSG_ALL, 0},
|
|
};
|
|
|
|
static int scsi_low_msginfunc_ext(struct scsi_low_softc *);
|
|
static int scsi_low_synch(struct scsi_low_softc *);
|
|
static int scsi_low_wide(struct scsi_low_softc *);
|
|
static int scsi_low_msginfunc_msg_reject(struct scsi_low_softc *);
|
|
static int scsi_low_msginfunc_rejop(struct scsi_low_softc *);
|
|
static int scsi_low_msginfunc_rp(struct scsi_low_softc *);
|
|
static int scsi_low_msginfunc_sdp(struct scsi_low_softc *);
|
|
static int scsi_low_msginfunc_disc(struct scsi_low_softc *);
|
|
static int scsi_low_msginfunc_cc(struct scsi_low_softc *);
|
|
static int scsi_low_msginfunc_lcc(struct scsi_low_softc *);
|
|
static int scsi_low_msginfunc_parity(struct scsi_low_softc *);
|
|
static int scsi_low_msginfunc_noop(struct scsi_low_softc *);
|
|
static int scsi_low_msginfunc_simple_qtag(struct scsi_low_softc *);
|
|
static int scsi_low_msginfunc_i_wide_residue(struct scsi_low_softc *);
|
|
|
|
struct scsi_low_msgin_data {
|
|
u_int md_len;
|
|
int (*md_msgfunc)(struct scsi_low_softc *);
|
|
};
|
|
|
|
struct scsi_low_msgin_data scsi_low_msgin_data[] = {
|
|
/* 0 */ {1, scsi_low_msginfunc_cc},
|
|
/* 1 */ {2, scsi_low_msginfunc_ext},
|
|
/* 2 */ {1, scsi_low_msginfunc_sdp},
|
|
/* 3 */ {1, scsi_low_msginfunc_rp},
|
|
/* 4 */ {1, scsi_low_msginfunc_disc},
|
|
/* 5 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 6 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 7 */ {1, scsi_low_msginfunc_msg_reject},
|
|
/* 8 */ {1, scsi_low_msginfunc_noop},
|
|
/* 9 */ {1, scsi_low_msginfunc_parity},
|
|
/* a */ {1, scsi_low_msginfunc_lcc},
|
|
/* b */ {1, scsi_low_msginfunc_lcc},
|
|
/* c */ {1, scsi_low_msginfunc_rejop},
|
|
/* d */ {2, scsi_low_msginfunc_rejop},
|
|
/* e */ {1, scsi_low_msginfunc_rejop},
|
|
/* f */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x10 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x11 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x12 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x13 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x14 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x15 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x16 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x17 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x18 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x19 */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x1a */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x1b */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x1c */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x1d */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x1e */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x1f */ {1, scsi_low_msginfunc_rejop},
|
|
/* 0x20 */ {2, scsi_low_msginfunc_simple_qtag},
|
|
/* 0x21 */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x22 */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x23 */ {2, scsi_low_msginfunc_i_wide_residue},
|
|
/* 0x24 */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x25 */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x26 */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x27 */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x28 */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x29 */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x2a */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x2b */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x2c */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x2d */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x2e */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x2f */ {2, scsi_low_msginfunc_rejop},
|
|
/* 0x30 */ {1, scsi_low_msginfunc_rejop} /* default rej op */
|
|
};
|
|
|
|
/**************************************************************
|
|
* msgout
|
|
**************************************************************/
|
|
static int
|
|
scsi_low_msgfunc_synch(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
int ptr = ti->ti_msgoutlen;
|
|
|
|
ti->ti_msgoutstr[ptr + 1] = MSG_EXTEND_SYNCHLEN;
|
|
ti->ti_msgoutstr[ptr + 2] = MSG_EXTEND_SYNCHCODE;
|
|
ti->ti_msgoutstr[ptr + 3] = ti->ti_maxsynch.period;
|
|
ti->ti_msgoutstr[ptr + 4] = ti->ti_maxsynch.offset;
|
|
return MSG_EXTEND_SYNCHLEN + 2;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msgfunc_wide(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
int ptr = ti->ti_msgoutlen;
|
|
|
|
ti->ti_msgoutstr[ptr + 1] = MSG_EXTEND_WIDELEN;
|
|
ti->ti_msgoutstr[ptr + 2] = MSG_EXTEND_WIDECODE;
|
|
ti->ti_msgoutstr[ptr + 3] = ti->ti_width;
|
|
return MSG_EXTEND_WIDELEN + 2;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msgfunc_identify(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
struct lun_info *li = slp->sl_Lnexus;
|
|
struct slccb *cb = slp->sl_Qnexus;
|
|
int ptr = ti->ti_msgoutlen;
|
|
u_int8_t msg;
|
|
|
|
msg = MSG_IDENTIFY;
|
|
if (cb == NULL)
|
|
{
|
|
slp->sl_error |= FATALIO;
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
|
|
SCSI_LOW_INFO(slp, ti, "MSGOUT: nexus unknown");
|
|
}
|
|
else
|
|
{
|
|
if (scsi_low_is_disconnect_ok(cb) != 0)
|
|
msg |= (MSG_IDENTIFY_DISCPRIV | li->li_lun);
|
|
else
|
|
msg |= li->li_lun;
|
|
|
|
if (ti->ti_phase == PH_MSGOUT)
|
|
{
|
|
(*slp->sl_funcs->scsi_low_establish_lun_nexus) (slp);
|
|
if (cb->ccb_tag == SCSI_LOW_UNKTAG)
|
|
{
|
|
(*slp->sl_funcs->scsi_low_establish_ccb_nexus) (slp);
|
|
}
|
|
}
|
|
}
|
|
ti->ti_msgoutstr[ptr + 0] = msg;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msgfunc_abort(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_ABORT);
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msgfunc_qabort(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_TERM);
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msgfunc_reset(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_RESET);
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msgfunc_qtag(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
struct slccb *cb = slp->sl_Qnexus;
|
|
int ptr = ti->ti_msgoutlen;
|
|
|
|
if (cb == NULL || cb->ccb_tag == SCSI_LOW_UNKTAG)
|
|
{
|
|
ti->ti_msgoutstr[ptr + 0] = MSG_NOOP;
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
ti->ti_msgoutstr[ptr + 1] = (u_int8_t) cb->ccb_tag;
|
|
if (ti->ti_phase == PH_MSGOUT)
|
|
{
|
|
(*slp->sl_funcs->scsi_low_establish_ccb_nexus) (slp);
|
|
}
|
|
}
|
|
return 2;
|
|
}
|
|
|
|
/*
|
|
* The following functions are called when targets give unexpected
|
|
* responces in msgin (after msgout).
|
|
*/
|
|
static int
|
|
scsi_low_errfunc_identify(slp, msgflags)
|
|
struct scsi_low_softc *slp;
|
|
u_int msgflags;
|
|
{
|
|
|
|
if (slp->sl_Lnexus != NULL)
|
|
{
|
|
slp->sl_Lnexus->li_cfgflags &= ~SCSI_LOW_DISC;
|
|
scsi_low_calcf_lun(slp->sl_Lnexus);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_errfunc_synch(slp, msgflags)
|
|
struct scsi_low_softc *slp;
|
|
u_int msgflags;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
|
|
MSGIN_PERIOD(ti) = 0;
|
|
MSGIN_OFFSET(ti) = 0;
|
|
scsi_low_synch(slp);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_errfunc_wide(slp, msgflags)
|
|
struct scsi_low_softc *slp;
|
|
u_int msgflags;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
|
|
MSGIN_WIDTHP(ti) = 0;
|
|
scsi_low_wide(slp);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_errfunc_qtag(slp, msgflags)
|
|
struct scsi_low_softc *slp;
|
|
u_int msgflags;
|
|
{
|
|
|
|
if ((msgflags & SCSI_LOW_MSG_REJECT) != 0)
|
|
{
|
|
if (slp->sl_Qnexus != NULL)
|
|
{
|
|
scsi_low_deactivate_qtag(slp->sl_Qnexus);
|
|
}
|
|
if (slp->sl_Lnexus != NULL)
|
|
{
|
|
slp->sl_Lnexus->li_cfgflags &= ~SCSI_LOW_QTAG;
|
|
scsi_low_calcf_lun(slp->sl_Lnexus);
|
|
}
|
|
printf("%s: scsi_low: qtag msg rejected\n", slp->sl_xname);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
int
|
|
scsi_low_msgout(slp, ti, fl)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
u_int fl;
|
|
{
|
|
struct scsi_low_msgout_data *mdp;
|
|
int len = 0;
|
|
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if (ti != slp->sl_Tnexus)
|
|
{
|
|
scsi_low_print(slp, NULL);
|
|
panic("scsi_low_msgout: Target nexus inconsistent");
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
slp->sl_ph_count ++;
|
|
if (slp->sl_ph_count > SCSI_LOW_MAX_PHCHANGES)
|
|
{
|
|
printf("%s: too many phase changes\n", slp->sl_xname);
|
|
slp->sl_error |= FATALIO;
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
|
|
}
|
|
|
|
/* STEP I.
|
|
* Scsi phase changes.
|
|
* Previously msgs asserted are accepted by our target or
|
|
* processed by scsi_low_msgin.
|
|
* Thus clear all saved informations.
|
|
*/
|
|
if ((fl & SCSI_LOW_MSGOUT_INIT) != 0)
|
|
{
|
|
ti->ti_omsgflags = 0;
|
|
ti->ti_emsgflags = 0;
|
|
}
|
|
else if (slp->sl_atten == 0)
|
|
{
|
|
/* STEP II.
|
|
* We did not assert attention, however still our target required
|
|
* msgs. Resend previous msgs.
|
|
*/
|
|
ti->ti_msgflags |= ti->ti_omsgflags;
|
|
ti->ti_omsgflags = 0;
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
printf("%s: scsi_low_msgout: retry msgout\n", slp->sl_xname);
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
}
|
|
|
|
/* STEP III.
|
|
* We have no msgs. send MSG_NOOP (OK?)
|
|
*/
|
|
if (scsi_low_is_msgout_continue(ti, 0) == 0)
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_NOOP, 0);
|
|
|
|
/* STEP IV.
|
|
* Process all msgs
|
|
*/
|
|
ti->ti_msgoutlen = 0;
|
|
slp->sl_clear_atten = 0;
|
|
mdp = &scsi_low_msgout_data[0];
|
|
for ( ; mdp->md_flags != SCSI_LOW_MSG_ALL; mdp ++)
|
|
{
|
|
if ((ti->ti_msgflags & mdp->md_flags) != 0)
|
|
{
|
|
ti->ti_omsgflags |= mdp->md_flags;
|
|
ti->ti_msgflags &= ~mdp->md_flags;
|
|
ti->ti_emsgflags = mdp->md_flags;
|
|
|
|
ti->ti_msgoutstr[ti->ti_msgoutlen] = mdp->md_msg;
|
|
if (mdp->md_msgfunc != NULL)
|
|
len = (*mdp->md_msgfunc) (slp);
|
|
else
|
|
len = 1;
|
|
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
scsi_low_msg_log_write(&ti->ti_log_msgout,
|
|
&ti->ti_msgoutstr[ti->ti_msgoutlen], len);
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
ti->ti_msgoutlen += len;
|
|
if ((mdp->md_condition & MSG_RELEASE_ATN) != 0)
|
|
{
|
|
slp->sl_clear_atten = 1;
|
|
break;
|
|
}
|
|
|
|
if ((fl & SCSI_LOW_MSGOUT_UNIFY) == 0 ||
|
|
ti->ti_msgflags == 0)
|
|
break;
|
|
|
|
if (ti->ti_msgoutlen >= SCSI_LOW_MAX_MSGLEN - 5)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (scsi_low_is_msgout_continue(ti, 0) == 0)
|
|
slp->sl_clear_atten = 1;
|
|
|
|
return ti->ti_msgoutlen;
|
|
}
|
|
|
|
/**************************************************************
|
|
* msgin
|
|
**************************************************************/
|
|
static int
|
|
scsi_low_msginfunc_noop(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msginfunc_rejop(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
u_int8_t msg = ti->ti_msgin[0];
|
|
|
|
printf("%s: MSGIN: msg 0x%x rejected\n", slp->sl_xname, (u_int) msg);
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msginfunc_cc(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct lun_info *li;
|
|
|
|
SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_CMDC);
|
|
|
|
/* validate status */
|
|
if (slp->sl_Qnexus == NULL)
|
|
return ENOENT;
|
|
|
|
slp->sl_Qnexus->ccb_sscp.scp_status = slp->sl_scp.scp_status;
|
|
li = slp->sl_Lnexus;
|
|
switch (slp->sl_scp.scp_status)
|
|
{
|
|
case ST_GOOD:
|
|
li->li_maxnqio = li->li_maxnexus;
|
|
break;
|
|
|
|
case ST_CHKCOND:
|
|
li->li_maxnqio = 0;
|
|
if (li->li_qflags & SCSI_LOW_QFLAG_CA_QCLEAR)
|
|
scsi_low_reset_nexus_lun(slp, li, 0);
|
|
break;
|
|
|
|
case ST_BUSY:
|
|
li->li_maxnqio = 0;
|
|
break;
|
|
|
|
case ST_QUEFULL:
|
|
if (li->li_maxnexus >= li->li_nqio)
|
|
li->li_maxnexus = li->li_nqio - 1;
|
|
li->li_maxnqio = li->li_maxnexus;
|
|
break;
|
|
|
|
case ST_INTERGOOD:
|
|
case ST_INTERMET:
|
|
slp->sl_error |= MSGERR;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msginfunc_lcc(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
struct slccb *ncb, *cb;
|
|
|
|
ti = slp->sl_Tnexus;
|
|
li = slp->sl_Lnexus;
|
|
if ((cb = slp->sl_Qnexus) == NULL)
|
|
goto bad;
|
|
|
|
cb->ccb_sscp.scp_status = slp->sl_scp.scp_status;
|
|
switch (slp->sl_scp.scp_status)
|
|
{
|
|
case ST_INTERGOOD:
|
|
case ST_INTERMET:
|
|
li->li_maxnqio = li->li_maxnexus;
|
|
break;
|
|
|
|
default:
|
|
slp->sl_error |= MSGERR;
|
|
break;
|
|
}
|
|
|
|
if ((li->li_flags & SCSI_LOW_LINK) == 0)
|
|
goto bad;
|
|
|
|
cb->ccb_error |= slp->sl_error;
|
|
if (cb->ccb_error != 0)
|
|
goto bad;
|
|
|
|
for (ncb = TAILQ_FIRST(&slp->sl_start); ncb != NULL;
|
|
ncb = TAILQ_NEXT(ncb, ccb_chain))
|
|
{
|
|
if (ncb->li == li)
|
|
goto cmd_link_start;
|
|
}
|
|
|
|
|
|
bad:
|
|
SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_LCTERM);
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
|
|
return EIO;
|
|
|
|
cmd_link_start:
|
|
ncb->ccb_flags &= ~CCB_STARTQ;
|
|
TAILQ_REMOVE(&slp->sl_start, ncb, ccb_chain);
|
|
|
|
scsi_low_dealloc_qtag(ncb);
|
|
ncb->ccb_tag = cb->ccb_tag;
|
|
ncb->ccb_otag = cb->ccb_otag;
|
|
cb->ccb_tag = SCSI_LOW_UNKTAG;
|
|
cb->ccb_otag = SCSI_LOW_UNKTAG;
|
|
if (scsi_low_done(slp, cb) == SCSI_LOW_DONE_RETRY)
|
|
panic("%s: linked ccb retried", slp->sl_xname);
|
|
|
|
slp->sl_Qnexus = ncb;
|
|
slp->sl_ph_count = 0;
|
|
|
|
ncb->ccb_error = 0;
|
|
ncb->ccb_datalen = -1;
|
|
ncb->ccb_scp.scp_status = ST_UNKNOWN;
|
|
ncb->ccb_flags &= ~CCB_INTERNAL;
|
|
|
|
scsi_low_init_msgsys(slp, ti);
|
|
|
|
(*slp->sl_osdep_fp->scsi_low_osdep_ccb_setup) (slp, ncb);
|
|
|
|
if (ncb->ccb_tcmax < SCSI_LOW_MIN_TOUT)
|
|
ncb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
|
|
ncb->ccb_tc = ncb->ccb_tcmax;
|
|
|
|
/* setup saved scsi data pointer */
|
|
ncb->ccb_sscp = ncb->ccb_scp;
|
|
slp->sl_scp = ncb->ccb_sscp;
|
|
slp->sl_error = ncb->ccb_error;
|
|
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
scsi_low_msg_log_init(&ti->ti_log_msgin);
|
|
scsi_low_msg_log_init(&ti->ti_log_msgout);
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
return EJUSTRETURN;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msginfunc_disc(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
SCSI_LOW_SETUP_MSGPHASE(slp, MSGPH_DISC);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msginfunc_sdp(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct slccb *cb = slp->sl_Qnexus;
|
|
|
|
if (cb != NULL)
|
|
{
|
|
cb->ccb_sscp.scp_datalen = slp->sl_scp.scp_datalen;
|
|
cb->ccb_sscp.scp_data = slp->sl_scp.scp_data;
|
|
}
|
|
else
|
|
scsi_low_assert_msg(slp, slp->sl_Tnexus, SCSI_LOW_MSG_REJECT, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msginfunc_rp(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
|
|
if (slp->sl_Qnexus != NULL)
|
|
slp->sl_scp = slp->sl_Qnexus->ccb_sscp;
|
|
else
|
|
scsi_low_assert_msg(slp, slp->sl_Tnexus, SCSI_LOW_MSG_REJECT, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_synch(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
u_int period = 0, offset = 0, speed;
|
|
u_char *s;
|
|
int error;
|
|
|
|
if ((MSGIN_PERIOD(ti) >= ti->ti_maxsynch.period &&
|
|
MSGIN_OFFSET(ti) <= ti->ti_maxsynch.offset) ||
|
|
MSGIN_OFFSET(ti) == 0)
|
|
{
|
|
if ((offset = MSGIN_OFFSET(ti)) != 0)
|
|
period = MSGIN_PERIOD(ti);
|
|
s = offset ? "synchronous" : "async";
|
|
}
|
|
else
|
|
{
|
|
/* XXX:
|
|
* Target seems to be brain damaged.
|
|
* Force async transfer.
|
|
*/
|
|
ti->ti_maxsynch.period = 0;
|
|
ti->ti_maxsynch.offset = 0;
|
|
printf("%s: target brain damaged. async transfer\n",
|
|
slp->sl_xname);
|
|
return EINVAL;
|
|
}
|
|
|
|
ti->ti_maxsynch.period = period;
|
|
ti->ti_maxsynch.offset = offset;
|
|
|
|
error = (*slp->sl_funcs->scsi_low_msg) (slp, ti, SCSI_LOW_MSG_SYNCH);
|
|
if (error != 0)
|
|
{
|
|
/* XXX:
|
|
* Current period and offset are not acceptable
|
|
* for our adapter.
|
|
* The adapter changes max synch and max offset.
|
|
*/
|
|
printf("%s: synch neg failed. retry synch msg neg ...\n",
|
|
slp->sl_xname);
|
|
return error;
|
|
}
|
|
|
|
ti->ti_osynch = ti->ti_maxsynch;
|
|
if (offset > 0)
|
|
{
|
|
ti->ti_setup_msg_done |= SCSI_LOW_MSG_SYNCH;
|
|
}
|
|
|
|
/* inform data */
|
|
if ((slp->sl_show_result & SHOW_SYNCH_NEG) != 0)
|
|
{
|
|
#ifdef SCSI_LOW_NEGOTIATE_BEFORE_SENSE
|
|
struct slccb *cb = slp->sl_Qnexus;
|
|
|
|
if (cb != NULL && (cb->ccb_flags & CCB_SENSE) != 0)
|
|
return 0;
|
|
#endif /* SCSI_LOW_NEGOTIATE_BEFORE_SENSE */
|
|
|
|
printf("%s(%d:*): <%s> offset %d period %dns ",
|
|
slp->sl_xname, ti->ti_id, s, offset, period * 4);
|
|
|
|
if (period != 0)
|
|
{
|
|
speed = 1000 * 10 / (period * 4);
|
|
printf("%d.%d M/s", speed / 10, speed % 10);
|
|
}
|
|
printf("\n");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_wide(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
int error;
|
|
|
|
ti->ti_width = MSGIN_WIDTHP(ti);
|
|
error = (*slp->sl_funcs->scsi_low_msg) (slp, ti, SCSI_LOW_MSG_WIDE);
|
|
if (error != 0)
|
|
{
|
|
/* XXX:
|
|
* Current width is not acceptable for our adapter.
|
|
* The adapter changes max width.
|
|
*/
|
|
printf("%s: wide neg failed. retry wide msg neg ...\n",
|
|
slp->sl_xname);
|
|
return error;
|
|
}
|
|
|
|
ti->ti_owidth = ti->ti_width;
|
|
if (ti->ti_width > SCSI_LOW_BUS_WIDTH_8)
|
|
{
|
|
ti->ti_setup_msg_done |=
|
|
(SCSI_LOW_MSG_SYNCH | SCSI_LOW_MSG_WIDE);
|
|
}
|
|
|
|
/* inform data */
|
|
if ((slp->sl_show_result & SHOW_WIDE_NEG) != 0)
|
|
{
|
|
#ifdef SCSI_LOW_NEGOTIATE_BEFORE_SENSE
|
|
struct slccb *cb = slp->sl_Qnexus;
|
|
|
|
if (cb != NULL && (cb->ccb_flags & CCB_SENSE) != 0)
|
|
return 0;
|
|
#endif /* SCSI_LOW_NEGOTIATE_BEFORE_SENSE */
|
|
|
|
printf("%s(%d:*): transfer width %d bits\n",
|
|
slp->sl_xname, ti->ti_id, 1 << (3 + ti->ti_width));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msginfunc_simple_qtag(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
scsi_low_tag_t etag = (scsi_low_tag_t) ti->ti_msgin[1];
|
|
|
|
if (slp->sl_Qnexus != NULL)
|
|
{
|
|
if (slp->sl_Qnexus->ccb_tag != etag)
|
|
{
|
|
slp->sl_error |= FATALIO;
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
|
|
SCSI_LOW_INFO(slp, ti, "MSGIN: qtag mismatch");
|
|
}
|
|
}
|
|
else if (scsi_low_establish_ccb(ti, slp->sl_Lnexus, etag) == NULL)
|
|
{
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_NEXUS_CHECK, ti->ti_id))
|
|
return 0;
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
|
|
slp->sl_error |= FATALIO;
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT_QTAG, 0);
|
|
SCSI_LOW_INFO(slp, ti, "MSGIN: taged ccb not found");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msginfunc_i_wide_residue(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
struct slccb *cb = slp->sl_Qnexus;
|
|
int res = (int) ti->ti_msgin[1];
|
|
|
|
if (cb == NULL || res <= 0 ||
|
|
(ti->ti_width == SCSI_LOW_BUS_WIDTH_16 && res > 1) ||
|
|
(ti->ti_width == SCSI_LOW_BUS_WIDTH_32 && res > 3))
|
|
return EINVAL;
|
|
|
|
if (slp->sl_scp.scp_datalen + res > cb->ccb_scp.scp_datalen)
|
|
return EINVAL;
|
|
|
|
slp->sl_scp.scp_datalen += res;
|
|
slp->sl_scp.scp_data -= res;
|
|
scsi_low_data_finish(slp);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msginfunc_ext(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct slccb *cb = slp->sl_Qnexus;
|
|
struct lun_info *li = slp->sl_Lnexus;
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
int count, retry;
|
|
u_int32_t *ptr;
|
|
|
|
if (ti->ti_msginptr == 2)
|
|
{
|
|
ti->ti_msginlen = ti->ti_msgin[1] + 2;
|
|
return 0;
|
|
}
|
|
|
|
switch (MKMSG_EXTEND(ti->ti_msgin[1], ti->ti_msgin[2]))
|
|
{
|
|
case MKMSG_EXTEND(MSG_EXTEND_MDPLEN, MSG_EXTEND_MDPCODE):
|
|
if (cb == NULL)
|
|
break;
|
|
|
|
ptr = (u_int32_t *)(&ti->ti_msgin[3]);
|
|
count = (int) htonl((long) (*ptr));
|
|
if(slp->sl_scp.scp_datalen - count < 0 ||
|
|
slp->sl_scp.scp_datalen - count > cb->ccb_scp.scp_datalen)
|
|
break;
|
|
|
|
slp->sl_scp.scp_datalen -= count;
|
|
slp->sl_scp.scp_data += count;
|
|
return 0;
|
|
|
|
case MKMSG_EXTEND(MSG_EXTEND_SYNCHLEN, MSG_EXTEND_SYNCHCODE):
|
|
if (li == NULL)
|
|
break;
|
|
|
|
retry = scsi_low_synch(slp);
|
|
if (retry != 0 || (ti->ti_emsgflags & SCSI_LOW_MSG_SYNCH) == 0)
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_SYNCH, 0);
|
|
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ATTEN_CHECK, ti->ti_id))
|
|
{
|
|
scsi_low_test_atten(slp, ti, SCSI_LOW_MSG_SYNCH);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
return 0;
|
|
|
|
case MKMSG_EXTEND(MSG_EXTEND_WIDELEN, MSG_EXTEND_WIDECODE):
|
|
if (li == NULL)
|
|
break;
|
|
|
|
retry = scsi_low_wide(slp);
|
|
if (retry != 0 || (ti->ti_emsgflags & SCSI_LOW_MSG_WIDE) == 0)
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_WIDE, 0);
|
|
|
|
return 0;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
|
|
return EINVAL;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msginfunc_parity(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
|
|
/* only I -> T, invalid! */
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_msginfunc_msg_reject(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti = slp->sl_Tnexus;
|
|
struct scsi_low_msgout_data *mdp;
|
|
u_int msgflags;
|
|
|
|
if (ti->ti_emsgflags != 0)
|
|
{
|
|
printf("%s: msg flags [0x%x] rejected\n",
|
|
slp->sl_xname, ti->ti_emsgflags);
|
|
msgflags = SCSI_LOW_MSG_REJECT;
|
|
mdp = &scsi_low_msgout_data[0];
|
|
for ( ; mdp->md_flags != SCSI_LOW_MSG_ALL; mdp ++)
|
|
{
|
|
if ((ti->ti_emsgflags & mdp->md_flags) != 0)
|
|
{
|
|
ti->ti_emsgflags &= ~mdp->md_flags;
|
|
if (mdp->md_errfunc != NULL)
|
|
(*mdp->md_errfunc) (slp, msgflags);
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
SCSI_LOW_INFO(slp, ti, "MSGIN: rejected msg not found");
|
|
slp->sl_error |= MSGERR;
|
|
}
|
|
return EINVAL;
|
|
}
|
|
|
|
int
|
|
scsi_low_msgin(slp, ti, c)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
u_int c;
|
|
{
|
|
struct scsi_low_msgin_data *sdp;
|
|
struct lun_info *li;
|
|
u_int8_t msg;
|
|
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if (ti != slp->sl_Tnexus)
|
|
{
|
|
scsi_low_print(slp, NULL);
|
|
panic("scsi_low_msgin: Target nexus inconsistent");
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
/*
|
|
* Phase changes, clear the pointer.
|
|
*/
|
|
if (ti->ti_ophase != ti->ti_phase)
|
|
{
|
|
MSGINPTR_CLR(ti);
|
|
ti->ti_msgin_parity_error = 0;
|
|
|
|
slp->sl_ph_count ++;
|
|
if (slp->sl_ph_count > SCSI_LOW_MAX_PHCHANGES)
|
|
{
|
|
printf("%s: too many phase changes\n", slp->sl_xname);
|
|
slp->sl_error |= FATALIO;
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Store a current messages byte into buffer and
|
|
* wait for the completion of the current msg.
|
|
*/
|
|
ti->ti_msgin[ti->ti_msginptr ++] = (u_int8_t) c;
|
|
if (ti->ti_msginptr >= SCSI_LOW_MAX_MSGLEN)
|
|
{
|
|
ti->ti_msginptr = SCSI_LOW_MAX_MSGLEN - 1;
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_REJECT, 0);
|
|
}
|
|
|
|
/*
|
|
* Check parity errors.
|
|
*/
|
|
if ((c & SCSI_LOW_DATA_PE) != 0)
|
|
{
|
|
ti->ti_msgin_parity_error ++;
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_PARITY, 0);
|
|
goto out;
|
|
}
|
|
|
|
if (ti->ti_msgin_parity_error != 0)
|
|
goto out;
|
|
|
|
/*
|
|
* Calculate messages length.
|
|
*/
|
|
msg = ti->ti_msgin[0];
|
|
if (msg < MSGIN_DATA_LAST)
|
|
sdp = &scsi_low_msgin_data[msg];
|
|
else
|
|
sdp = &scsi_low_msgin_data[MSGIN_DATA_LAST];
|
|
|
|
if (ti->ti_msginlen == 0)
|
|
{
|
|
ti->ti_msginlen = sdp->md_len;
|
|
}
|
|
|
|
/*
|
|
* Check comletion.
|
|
*/
|
|
if (ti->ti_msginptr < ti->ti_msginlen)
|
|
return EJUSTRETURN;
|
|
|
|
/*
|
|
* Do process.
|
|
*/
|
|
if ((msg & MSG_IDENTIFY) == 0)
|
|
{
|
|
if (((*sdp->md_msgfunc) (slp)) == EJUSTRETURN)
|
|
return EJUSTRETURN;
|
|
}
|
|
else
|
|
{
|
|
li = slp->sl_Lnexus;
|
|
if (li == NULL)
|
|
{
|
|
li = scsi_low_alloc_li(ti, MSGCMD_LUN(msg), 0);
|
|
if (li == NULL)
|
|
goto badlun;
|
|
slp->sl_Lnexus = li;
|
|
(*slp->sl_funcs->scsi_low_establish_lun_nexus) (slp);
|
|
}
|
|
else
|
|
{
|
|
if (MSGCMD_LUN(msg) != li->li_lun)
|
|
goto badlun;
|
|
}
|
|
|
|
if (slp->sl_Qnexus == NULL && li->li_nqio == 0)
|
|
{
|
|
if (!scsi_low_establish_ccb(ti, li, SCSI_LOW_UNKTAG))
|
|
{
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_NEXUS_CHECK, ti->ti_id) != 0)
|
|
{
|
|
goto out;
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
goto badlun;
|
|
}
|
|
}
|
|
}
|
|
goto out;
|
|
|
|
/*
|
|
* Msg process completed, reset msgin pointer and assert ATN if desired.
|
|
*/
|
|
badlun:
|
|
slp->sl_error |= FATALIO;
|
|
scsi_low_assert_msg(slp, ti, SCSI_LOW_MSG_ABORT, 0);
|
|
SCSI_LOW_INFO(slp, ti, "MSGIN: identify wrong");
|
|
|
|
out:
|
|
if (ti->ti_msginptr < ti->ti_msginlen)
|
|
return EJUSTRETURN;
|
|
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
scsi_low_msg_log_write(&ti->ti_log_msgin,
|
|
&ti->ti_msgin[0], ti->ti_msginlen);
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
MSGINPTR_CLR(ti);
|
|
return 0;
|
|
}
|
|
|
|
/**********************************************************
|
|
* disconnect
|
|
**********************************************************/
|
|
int
|
|
scsi_low_disconnected(slp, ti)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
{
|
|
struct slccb *cb = slp->sl_Qnexus;
|
|
|
|
/* check phase completion */
|
|
switch (slp->sl_msgphase)
|
|
{
|
|
case MSGPH_RESET:
|
|
scsi_low_statusin(slp, slp->sl_Tnexus, ST_GOOD);
|
|
scsi_low_msginfunc_cc(slp);
|
|
scsi_low_reset_nexus_target(slp, slp->sl_Tnexus, 0);
|
|
goto io_resume;
|
|
|
|
case MSGPH_ABORT:
|
|
scsi_low_statusin(slp, slp->sl_Tnexus, ST_GOOD);
|
|
scsi_low_msginfunc_cc(slp);
|
|
scsi_low_reset_nexus_lun(slp, slp->sl_Lnexus, 0);
|
|
goto io_resume;
|
|
|
|
case MSGPH_TERM:
|
|
scsi_low_statusin(slp, slp->sl_Tnexus, ST_GOOD);
|
|
scsi_low_msginfunc_cc(slp);
|
|
goto io_resume;
|
|
|
|
case MSGPH_DISC:
|
|
if (cb != NULL)
|
|
{
|
|
struct lun_info *li;
|
|
|
|
li = cb->li;
|
|
TAILQ_INSERT_TAIL(&li->li_discq, cb, ccb_chain);
|
|
cb->ccb_flags |= CCB_DISCQ;
|
|
cb->ccb_error |= slp->sl_error;
|
|
li->li_disc ++;
|
|
ti->ti_disc ++;
|
|
slp->sl_disc ++;
|
|
}
|
|
|
|
#ifdef SCSI_LOW_STATICS
|
|
scsi_low_statics.nexus_disconnected ++;
|
|
#endif /* SCSI_LOW_STATICS */
|
|
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_DISC, ti->ti_id) != 0)
|
|
{
|
|
printf("## SCSI_LOW_DISCONNECTED ===============\n");
|
|
scsi_low_print(slp, NULL);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
break;
|
|
|
|
case MSGPH_NULL:
|
|
slp->sl_error |= FATALIO;
|
|
if (ti->ti_phase == PH_SELSTART)
|
|
slp->sl_error |= SELTIMEOUTIO;
|
|
else
|
|
slp->sl_error |= UBFERR;
|
|
/* fall through */
|
|
|
|
case MSGPH_LCTERM:
|
|
case MSGPH_CMDC:
|
|
io_resume:
|
|
if (cb == NULL)
|
|
break;
|
|
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_TEST_GO(SCSI_LOW_ATTEN_CHECK, ti->ti_id))
|
|
{
|
|
if (cb->ccb_omsgoutflag == SCSI_LOW_MSG_NOOP &&
|
|
(cb->ccb_msgoutflag != 0 ||
|
|
(ti->ti_msgflags & SCSI_LOW_MSG_NOOP)))
|
|
{
|
|
scsi_low_info(slp, ti, "ATTEN CHECK FAILED");
|
|
}
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
|
|
cb->ccb_error |= slp->sl_error;
|
|
if (scsi_low_done(slp, cb) == SCSI_LOW_DONE_RETRY)
|
|
{
|
|
cb->ccb_flags |= CCB_STARTQ;
|
|
TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
|
|
}
|
|
break;
|
|
}
|
|
|
|
scsi_low_bus_release(slp, ti);
|
|
scsi_low_start(slp);
|
|
return 1;
|
|
}
|
|
|
|
/**********************************************************
|
|
* TAG operations
|
|
**********************************************************/
|
|
static int
|
|
scsi_low_alloc_qtag(cb)
|
|
struct slccb *cb;
|
|
{
|
|
struct lun_info *li = cb->li;
|
|
scsi_low_tag_t etag;
|
|
|
|
if (cb->ccb_otag != SCSI_LOW_UNKTAG)
|
|
return 0;
|
|
|
|
#ifndef SCSI_LOW_ALT_QTAG_ALLOCATE
|
|
etag = ffs(li->li_qtagbits);
|
|
if (etag == 0)
|
|
return ENOSPC;
|
|
|
|
li->li_qtagbits &= ~(1 << (etag - 1));
|
|
cb->ccb_otag = etag;
|
|
return 0;
|
|
|
|
#else /* SCSI_LOW_ALT_QTAG_ALLOCATE */
|
|
for (etag = li->li_qd ; li->li_qd < SCSI_LOW_MAXNEXUS; li->li_qd ++)
|
|
if (li->li_qtagarray[li->li_qd] == 0)
|
|
goto found;
|
|
|
|
for (li->li_qd = 0; li->li_qd < etag; li->li_qd ++)
|
|
if (li->li_qtagarray[li->li_qd] == 0)
|
|
goto found;
|
|
|
|
return ENOSPC;
|
|
|
|
found:
|
|
li->li_qtagarray[li->li_qd] ++;
|
|
cb->ccb_otag = (li->li_qd ++);
|
|
return 0;
|
|
#endif /* SCSI_LOW_ALT_QTAG_ALLOCATE */
|
|
}
|
|
|
|
static int
|
|
scsi_low_dealloc_qtag(cb)
|
|
struct slccb *cb;
|
|
{
|
|
struct lun_info *li = cb->li;
|
|
scsi_low_tag_t etag;
|
|
|
|
if (cb->ccb_otag == SCSI_LOW_UNKTAG)
|
|
return 0;
|
|
|
|
#ifndef SCSI_LOW_ALT_QTAG_ALLOCATE
|
|
etag = cb->ccb_otag - 1;
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if (etag >= sizeof(li->li_qtagbits) * NBBY)
|
|
panic("scsi_low_dealloc_tag: illegal tag");
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
li->li_qtagbits |= (1 << etag);
|
|
|
|
#else /* SCSI_LOW_ALT_QTAG_ALLOCATE */
|
|
etag = cb->ccb_otag;
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if (etag >= SCSI_LOW_MAXNEXUS)
|
|
panic("scsi_low_dealloc_tag: illegal tag");
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
li->li_qtagarray[etag] --;
|
|
#endif /* SCSI_LOW_ALT_QTAG_ALLOCATE */
|
|
|
|
cb->ccb_otag = SCSI_LOW_UNKTAG;
|
|
return 0;
|
|
}
|
|
|
|
static struct slccb *
|
|
scsi_low_revoke_ccb(slp, cb, fdone)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
int fdone;
|
|
{
|
|
struct targ_info *ti = cb->ti;
|
|
struct lun_info *li = cb->li;
|
|
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
if ((cb->ccb_flags & (CCB_STARTQ | CCB_DISCQ)) ==
|
|
(CCB_STARTQ | CCB_DISCQ))
|
|
{
|
|
panic("%s: ccb in both queue", slp->sl_xname);
|
|
}
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
if ((cb->ccb_flags & CCB_STARTQ) != 0)
|
|
{
|
|
TAILQ_REMOVE(&slp->sl_start, cb, ccb_chain);
|
|
}
|
|
|
|
if ((cb->ccb_flags & CCB_DISCQ) != 0)
|
|
{
|
|
TAILQ_REMOVE(&li->li_discq, cb, ccb_chain);
|
|
li->li_disc --;
|
|
ti->ti_disc --;
|
|
slp->sl_disc --;
|
|
}
|
|
|
|
cb->ccb_flags &= ~(CCB_STARTQ | CCB_DISCQ |
|
|
CCB_SENSE | CCB_CLEARQ | CCB_INTERNAL);
|
|
|
|
if (fdone != 0 &&
|
|
(cb->ccb_rcnt ++ >= slp->sl_max_retry ||
|
|
(cb->ccb_flags & CCB_NORETRY) != 0))
|
|
{
|
|
cb->ccb_error |= FATALIO;
|
|
cb->ccb_flags &= ~CCB_AUTOSENSE;
|
|
if (scsi_low_done(slp, cb) != SCSI_LOW_DONE_COMPLETE)
|
|
panic("%s: done ccb retried", slp->sl_xname);
|
|
return NULL;
|
|
}
|
|
else
|
|
{
|
|
cb->ccb_error |= PENDINGIO;
|
|
scsi_low_deactivate_qtag(cb);
|
|
scsi_low_ccb_message_retry(cb);
|
|
cb->ccb_tc = cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
|
|
return cb;
|
|
}
|
|
}
|
|
|
|
static void
|
|
scsi_low_reset_nexus_lun(slp, li, fdone)
|
|
struct scsi_low_softc *slp;
|
|
struct lun_info *li;
|
|
int fdone;
|
|
{
|
|
struct slccb *cb, *ncb, *ecb;
|
|
|
|
if (li == NULL)
|
|
return;
|
|
|
|
ecb = NULL;
|
|
for (cb = TAILQ_FIRST(&li->li_discq); cb != NULL; cb = ncb)
|
|
{
|
|
ncb = TAILQ_NEXT(cb, ccb_chain);
|
|
cb = scsi_low_revoke_ccb(slp, cb, fdone);
|
|
if (cb != NULL)
|
|
{
|
|
/*
|
|
* presumely keep ordering of io
|
|
*/
|
|
cb->ccb_flags |= CCB_STARTQ;
|
|
if (ecb == NULL)
|
|
{
|
|
TAILQ_INSERT_HEAD(&slp->sl_start,\
|
|
cb, ccb_chain);
|
|
}
|
|
else
|
|
{
|
|
TAILQ_INSERT_AFTER(&slp->sl_start,\
|
|
ecb, cb, ccb_chain);
|
|
}
|
|
ecb = cb;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**************************************************************
|
|
* Qurik setup
|
|
**************************************************************/
|
|
static void
|
|
scsi_low_calcf_lun(li)
|
|
struct lun_info *li;
|
|
{
|
|
struct targ_info *ti = li->li_ti;
|
|
struct scsi_low_softc *slp = ti->ti_sc;
|
|
u_int cfgflags, diskflags;
|
|
|
|
if (li->li_flags_valid == SCSI_LOW_LUN_FLAGS_ALL_VALID)
|
|
cfgflags = li->li_cfgflags;
|
|
else
|
|
cfgflags = 0;
|
|
|
|
diskflags = li->li_diskflags & li->li_quirks;
|
|
|
|
/* disconnect */
|
|
li->li_flags &= ~SCSI_LOW_DISC;
|
|
if ((slp->sl_cfgflags & CFG_NODISC) == 0 &&
|
|
(diskflags & SCSI_LOW_DISK_DISC) != 0 &&
|
|
(cfgflags & SCSI_LOW_DISC) != 0)
|
|
li->li_flags |= SCSI_LOW_DISC;
|
|
|
|
/* parity */
|
|
li->li_flags |= SCSI_LOW_NOPARITY;
|
|
if ((slp->sl_cfgflags & CFG_NOPARITY) == 0 &&
|
|
(diskflags & SCSI_LOW_DISK_PARITY) != 0 &&
|
|
(cfgflags & SCSI_LOW_NOPARITY) == 0)
|
|
li->li_flags &= ~SCSI_LOW_NOPARITY;
|
|
|
|
/* qtag */
|
|
if ((slp->sl_cfgflags & CFG_NOQTAG) == 0 &&
|
|
(cfgflags & SCSI_LOW_QTAG) != 0 &&
|
|
(diskflags & SCSI_LOW_DISK_QTAG) != 0)
|
|
{
|
|
li->li_flags |= SCSI_LOW_QTAG;
|
|
li->li_maxnexus = SCSI_LOW_MAXNEXUS;
|
|
li->li_maxnqio = li->li_maxnexus;
|
|
}
|
|
else
|
|
{
|
|
li->li_flags &= ~SCSI_LOW_QTAG;
|
|
li->li_maxnexus = 0;
|
|
li->li_maxnqio = li->li_maxnexus;
|
|
}
|
|
|
|
/* cmd link */
|
|
li->li_flags &= ~SCSI_LOW_LINK;
|
|
if ((cfgflags & SCSI_LOW_LINK) != 0 &&
|
|
(diskflags & SCSI_LOW_DISK_LINK) != 0)
|
|
li->li_flags |= SCSI_LOW_LINK;
|
|
|
|
/* compatible flags */
|
|
li->li_flags &= ~SCSI_LOW_SYNC;
|
|
if (ti->ti_maxsynch.offset > 0)
|
|
li->li_flags |= SCSI_LOW_SYNC;
|
|
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_CALCF, ti->ti_id) != 0)
|
|
{
|
|
scsi_low_calcf_show(li);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
}
|
|
|
|
static void
|
|
scsi_low_calcf_target(ti)
|
|
struct targ_info *ti;
|
|
{
|
|
struct scsi_low_softc *slp = ti->ti_sc;
|
|
u_int offset, period, diskflags;
|
|
|
|
diskflags = ti->ti_diskflags & ti->ti_quirks;
|
|
|
|
/* synch */
|
|
if ((slp->sl_cfgflags & CFG_ASYNC) == 0 &&
|
|
(diskflags & SCSI_LOW_DISK_SYNC) != 0)
|
|
{
|
|
offset = ti->ti_maxsynch.offset;
|
|
period = ti->ti_maxsynch.period;
|
|
if (offset == 0 || period == 0)
|
|
offset = period = 0;
|
|
}
|
|
else
|
|
{
|
|
offset = period = 0;
|
|
}
|
|
|
|
ti->ti_maxsynch.offset = offset;
|
|
ti->ti_maxsynch.period = period;
|
|
|
|
/* wide */
|
|
if ((diskflags & SCSI_LOW_DISK_WIDE_32) == 0 &&
|
|
ti->ti_width > SCSI_LOW_BUS_WIDTH_16)
|
|
ti->ti_width = SCSI_LOW_BUS_WIDTH_16;
|
|
|
|
if ((diskflags & SCSI_LOW_DISK_WIDE_16) == 0 &&
|
|
ti->ti_width > SCSI_LOW_BUS_WIDTH_8)
|
|
ti->ti_width = SCSI_LOW_BUS_WIDTH_8;
|
|
|
|
if (ti->ti_flags_valid == SCSI_LOW_TARG_FLAGS_ALL_VALID)
|
|
{
|
|
if (ti->ti_maxsynch.offset != ti->ti_osynch.offset ||
|
|
ti->ti_maxsynch.period != ti->ti_osynch.period)
|
|
ti->ti_setup_msg |= SCSI_LOW_MSG_SYNCH;
|
|
if (ti->ti_width != ti->ti_owidth)
|
|
ti->ti_setup_msg |= (SCSI_LOW_MSG_WIDE | SCSI_LOW_MSG_SYNCH);
|
|
|
|
ti->ti_osynch = ti->ti_maxsynch;
|
|
ti->ti_owidth = ti->ti_width;
|
|
}
|
|
|
|
#ifdef SCSI_LOW_DEBUG
|
|
if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_CALCF, ti->ti_id) != 0)
|
|
{
|
|
printf("%s(%d:*): max period(%dns) offset(%d) width(%d)\n",
|
|
slp->sl_xname, ti->ti_id,
|
|
ti->ti_maxsynch.period * 4,
|
|
ti->ti_maxsynch.offset,
|
|
ti->ti_width);
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
}
|
|
|
|
static void
|
|
scsi_low_calcf_show(li)
|
|
struct lun_info *li;
|
|
{
|
|
struct targ_info *ti = li->li_ti;
|
|
struct scsi_low_softc *slp = ti->ti_sc;
|
|
|
|
printf("%s(%d:%d): period(%d ns) offset(%d) width(%d) flags 0x%b\n",
|
|
slp->sl_xname, ti->ti_id, li->li_lun,
|
|
ti->ti_maxsynch.period * 4,
|
|
ti->ti_maxsynch.offset,
|
|
ti->ti_width,
|
|
li->li_flags, SCSI_LOW_BITS);
|
|
}
|
|
|
|
#ifdef SCSI_LOW_START_UP_CHECK
|
|
/**************************************************************
|
|
* scsi world start up
|
|
**************************************************************/
|
|
static int scsi_low_poll(struct scsi_low_softc *, struct slccb *);
|
|
|
|
static int
|
|
scsi_low_start_up(slp)
|
|
struct scsi_low_softc *slp;
|
|
{
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
struct slccb *cb;
|
|
int target, lun;
|
|
|
|
printf("%s: scsi_low: probing all devices ....\n", slp->sl_xname);
|
|
|
|
for (target = 0; target < slp->sl_ntargs; target ++)
|
|
{
|
|
if (target == slp->sl_hostid)
|
|
{
|
|
if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
|
|
{
|
|
printf("%s: scsi_low: target %d (host card)\n",
|
|
slp->sl_xname, target);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
|
|
{
|
|
printf("%s: scsi_low: target %d lun ",
|
|
slp->sl_xname, target);
|
|
}
|
|
|
|
ti = slp->sl_ti[target];
|
|
for (lun = 0; lun < slp->sl_nluns; lun ++)
|
|
{
|
|
if ((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)
|
|
break;
|
|
|
|
cb->osdep = NULL;
|
|
cb->bp = NULL;
|
|
|
|
li = scsi_low_alloc_li(ti, lun, 1);
|
|
|
|
scsi_low_enqueue(slp, ti, li, cb,
|
|
CCB_AUTOSENSE | CCB_POLLED, 0);
|
|
|
|
scsi_low_poll(slp, cb);
|
|
|
|
if (li->li_state != SCSI_LOW_LUN_OK)
|
|
break;
|
|
|
|
if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
|
|
{
|
|
printf("%d ", lun);
|
|
}
|
|
}
|
|
|
|
if ((slp->sl_show_result & SHOW_PROBE_RES) != 0)
|
|
{
|
|
printf("\n");
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
scsi_low_poll(slp, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
{
|
|
int tcount;
|
|
|
|
tcount = 0;
|
|
while (slp->sl_nio > 0)
|
|
{
|
|
SCSI_LOW_DELAY((1000 * 1000) / SCSI_LOW_POLL_HZ);
|
|
|
|
(*slp->sl_funcs->scsi_low_poll) (slp);
|
|
if (tcount ++ < SCSI_LOW_POLL_HZ / SCSI_LOW_TIMEOUT_HZ)
|
|
continue;
|
|
|
|
tcount = 0;
|
|
scsi_low_timeout_check(slp);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif /* SCSI_LOW_START_UP_CHECK */
|
|
|
|
/**********************************************************
|
|
* DEBUG SECTION
|
|
**********************************************************/
|
|
#ifdef SCSI_LOW_DEBUG
|
|
static void
|
|
scsi_low_test_abort(slp, ti, li)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
struct lun_info *li;
|
|
{
|
|
struct slccb *acb;
|
|
|
|
if (li->li_disc > 1)
|
|
{
|
|
acb = TAILQ_FIRST(&li->li_discq);
|
|
if (scsi_low_abort_ccb(slp, acb) == 0)
|
|
{
|
|
printf("%s: aborting ccb(0x%lx) start\n",
|
|
slp->sl_xname, (u_long) acb);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
scsi_low_test_atten(slp, ti, msg)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
u_int msg;
|
|
{
|
|
|
|
if (slp->sl_ph_count < SCSI_LOW_MAX_ATTEN_CHECK)
|
|
scsi_low_assert_msg(slp, ti, msg, 0);
|
|
else
|
|
printf("%s: atten check OK\n", slp->sl_xname);
|
|
}
|
|
|
|
static void
|
|
scsi_low_test_cmdlnk(slp, cb)
|
|
struct scsi_low_softc *slp;
|
|
struct slccb *cb;
|
|
{
|
|
#define SCSI_LOW_CMDLNK_NOK (CCB_INTERNAL | CCB_SENSE | CCB_CLEARQ)
|
|
|
|
if ((cb->ccb_flags & SCSI_LOW_CMDLNK_NOK) != 0)
|
|
return;
|
|
|
|
memcpy(cb->ccb_scsi_cmd, slp->sl_scp.scp_cmd,
|
|
slp->sl_scp.scp_cmdlen);
|
|
cb->ccb_scsi_cmd[slp->sl_scp.scp_cmdlen - 1] |= 1;
|
|
slp->sl_scp.scp_cmd = cb->ccb_scsi_cmd;
|
|
}
|
|
#endif /* SCSI_LOW_DEBUG */
|
|
|
|
/* static */ void
|
|
scsi_low_info(slp, ti, s)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
u_char *s;
|
|
{
|
|
|
|
if (slp == NULL)
|
|
slp = LIST_FIRST(&sl_tab);
|
|
if (s == NULL)
|
|
s = "no message";
|
|
|
|
printf(">>>>> SCSI_LOW_INFO(0x%lx): %s\n", (u_long) slp->sl_Tnexus, s);
|
|
if (ti == NULL)
|
|
{
|
|
for (ti = TAILQ_FIRST(&slp->sl_titab); ti != NULL;
|
|
ti = TAILQ_NEXT(ti, ti_chain))
|
|
{
|
|
scsi_low_print(slp, ti);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
scsi_low_print(slp, ti);
|
|
}
|
|
}
|
|
|
|
static u_char *phase[] =
|
|
{
|
|
"FREE", "ARBSTART", "SELSTART", "SELECTED",
|
|
"CMDOUT", "DATA", "MSGIN", "MSGOUT", "STATIN", "DISC", "RESEL"
|
|
};
|
|
|
|
void
|
|
scsi_low_print(slp, ti)
|
|
struct scsi_low_softc *slp;
|
|
struct targ_info *ti;
|
|
{
|
|
struct lun_info *li;
|
|
struct slccb *cb;
|
|
struct sc_p *sp;
|
|
|
|
if (ti == NULL || ti == slp->sl_Tnexus)
|
|
{
|
|
ti = slp->sl_Tnexus;
|
|
li = slp->sl_Lnexus;
|
|
cb = slp->sl_Qnexus;
|
|
}
|
|
else
|
|
{
|
|
li = LIST_FIRST(&ti->ti_litab);
|
|
cb = TAILQ_FIRST(&li->li_discq);
|
|
}
|
|
sp = &slp->sl_scp;
|
|
|
|
printf("%s: === NEXUS T(0x%lx) L(0x%lx) Q(0x%lx) NIO(%d) ===\n",
|
|
slp->sl_xname, (u_long) ti, (u_long) li, (u_long) cb,
|
|
slp->sl_nio);
|
|
|
|
/* target stat */
|
|
if (ti != NULL)
|
|
{
|
|
u_int flags = 0, maxnqio = 0, nqio = 0;
|
|
int lun = -1;
|
|
|
|
if (li != NULL)
|
|
{
|
|
lun = li->li_lun;
|
|
flags = li->li_flags;
|
|
maxnqio = li->li_maxnqio;
|
|
nqio = li->li_nqio;
|
|
}
|
|
|
|
printf("%s(%d:%d) ph<%s> => ph<%s> DISC(%d) QIO(%d:%d)\n",
|
|
slp->sl_xname,
|
|
ti->ti_id, lun, phase[(int) ti->ti_ophase],
|
|
phase[(int) ti->ti_phase], ti->ti_disc,
|
|
nqio, maxnqio);
|
|
|
|
if (cb != NULL)
|
|
{
|
|
printf("CCB: cmd[0] 0x%x clen 0x%x dlen 0x%x<0x%x stat 0x%x err %b\n",
|
|
(u_int) cb->ccb_scp.scp_cmd[0],
|
|
cb->ccb_scp.scp_cmdlen,
|
|
cb->ccb_datalen,
|
|
cb->ccb_scp.scp_datalen,
|
|
(u_int) cb->ccb_sscp.scp_status,
|
|
cb->ccb_error, SCSI_LOW_ERRORBITS);
|
|
}
|
|
|
|
printf("MSGIN: ptr(%x) [%x][%x][%x][%x][%x] attention: %d\n",
|
|
(u_int) (ti->ti_msginptr),
|
|
(u_int) (ti->ti_msgin[0]),
|
|
(u_int) (ti->ti_msgin[1]),
|
|
(u_int) (ti->ti_msgin[2]),
|
|
(u_int) (ti->ti_msgin[3]),
|
|
(u_int) (ti->ti_msgin[4]),
|
|
slp->sl_atten);
|
|
|
|
printf("MSGOUT: msgflags 0x%x [%x][%x][%x][%x][%x] msgoutlen %d C_FLAGS: %b\n",
|
|
(u_int) ti->ti_msgflags,
|
|
(u_int) (ti->ti_msgoutstr[0]),
|
|
(u_int) (ti->ti_msgoutstr[1]),
|
|
(u_int) (ti->ti_msgoutstr[2]),
|
|
(u_int) (ti->ti_msgoutstr[3]),
|
|
(u_int) (ti->ti_msgoutstr[4]),
|
|
ti->ti_msgoutlen,
|
|
flags, SCSI_LOW_BITS);
|
|
|
|
#ifdef SCSI_LOW_DIAGNOSTIC
|
|
scsi_low_msg_log_show(&ti->ti_log_msgin, "MIN LOG ", 2);
|
|
scsi_low_msg_log_show(&ti->ti_log_msgout, "MOUT LOG", 2);
|
|
#endif /* SCSI_LOW_DIAGNOSTIC */
|
|
|
|
}
|
|
|
|
printf("SCB: daddr 0x%lx dlen 0x%x stat 0x%x err %b\n",
|
|
(u_long) sp->scp_data,
|
|
sp->scp_datalen,
|
|
(u_int) sp->scp_status,
|
|
slp->sl_error, SCSI_LOW_ERRORBITS);
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|
}
|