1a6b414672
changes for "LSILogic"
(2) enabled non-disk support through CAM interface
(3) HA_INQ (a) enabled tagged queuing (b) disable reset during
driver loading (b) renamed BSDi string to LSI
(4) disabled detecting disk devices during SCSI INQUIRY
(5) changed dcdb single element sglist to send one entire buffer chunk
(6) nsgelem not set in sglist
(7) ap_data_transfer_length not set for dcdb
(8) changed "struct thread" to "d_thread_t" for compatibliity { xxx_open,
xxx_close, xxx_ioctl }
(9) miscellaneous compatiblity fixes
(10) bug fix for 0x0409/0x1000 card
(11) added compiling amr_cam.c in sys/conf/files
(12) added compiling amr_cam.c in sys/modules/amr/Makefile
Reviewed by:ps
MFC after:1 week
1 week
1649 lines
47 KiB
C
1649 lines
47 KiB
C
/*-
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* Copyright (c) 1999,2000 Michael Smith
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* Copyright (c) 2000 BSDi
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* 3. The party using or redistributing the source code and binary forms
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* agrees to the above disclaimer and the terms and conditions set forth
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* herein.
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*
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* Additional Copyright (c) 2002 by Eric Moore under same license.
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* Additional Copyright (c) 2002 LSI Logic Corporation
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*
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* $FreeBSD$
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*/
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/*
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* Driver for the AMI MegaRaid family of controllers.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <dev/amr/amr_compat.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/devicestat.h>
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#include <sys/disk.h>
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#include <sys/stat.h>
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#include <machine/bus_memio.h>
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#include <machine/bus_pio.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#include <dev/amr/amrio.h>
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#include <dev/amr/amrreg.h>
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#include <dev/amr/amrvar.h>
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#define AMR_DEFINE_TABLES
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#include <dev/amr/amr_tables.h>
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#define AMR_CDEV_MAJOR 132
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static d_open_t amr_open;
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static d_close_t amr_close;
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static d_ioctl_t amr_ioctl;
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static struct cdevsw amr_cdevsw = {
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/* open */ amr_open,
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/* close */ amr_close,
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/* read */ noread,
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/* write */ nowrite,
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/* ioctl */ amr_ioctl,
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/* poll */ nopoll,
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/* mmap */ nommap,
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/* strategy */ nostrategy,
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/* name */ "amr",
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/* maj */ AMR_CDEV_MAJOR,
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/* dump */ nodump,
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/* psize */ nopsize,
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/* flags */ 0,
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};
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/*
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* Initialisation, bus interface.
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*/
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static void amr_startup(void *arg);
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/*
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* Command wrappers
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*/
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static int amr_query_controller(struct amr_softc *sc);
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static void *amr_enquiry(struct amr_softc *sc, size_t bufsize,
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u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual);
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static void amr_completeio(struct amr_command *ac);
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/*
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* Command buffer allocation.
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*/
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static void amr_alloccmd_cluster(struct amr_softc *sc);
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static void amr_freecmd_cluster(struct amr_command_cluster *acc);
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/*
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* Command processing.
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*/
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static int amr_bio_command(struct amr_softc *sc, struct amr_command **acp);
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static int amr_wait_command(struct amr_command *ac);
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static int amr_poll_command(struct amr_command *ac);
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static int amr_getslot(struct amr_command *ac);
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static void amr_mapcmd(struct amr_command *ac);
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static void amr_unmapcmd(struct amr_command *ac);
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static int amr_start(struct amr_command *ac);
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static void amr_complete(void *context, int pending);
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/*
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* Status monitoring
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*/
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static void amr_periodic(void *data);
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/*
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* Interface-specific shims
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*/
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static int amr_quartz_submit_command(struct amr_softc *sc);
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static int amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave);
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static int amr_std_submit_command(struct amr_softc *sc);
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static int amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave);
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static void amr_std_attach_mailbox(struct amr_softc *sc);
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#ifdef AMR_BOARD_INIT
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static int amr_quartz_init(struct amr_softc *sc);
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static int amr_std_init(struct amr_softc *sc);
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#endif
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/*
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* Debugging
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*/
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static void amr_describe_controller(struct amr_softc *sc);
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#ifdef AMR_DEBUG
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static void amr_printcommand(struct amr_command *ac);
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#endif
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/********************************************************************************
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********************************************************************************
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Inline Glue
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********************************************************************************
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********************************************************************************/
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/********************************************************************************
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********************************************************************************
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Public Interfaces
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********************************************************************************
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********************************************************************************/
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/********************************************************************************
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* Initialise the controller and softc.
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*/
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int
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amr_attach(struct amr_softc *sc)
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{
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debug_called(1);
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/*
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* Initialise per-controller queues.
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*/
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TAILQ_INIT(&sc->amr_completed);
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TAILQ_INIT(&sc->amr_freecmds);
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TAILQ_INIT(&sc->amr_cmd_clusters);
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TAILQ_INIT(&sc->amr_ready);
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bioq_init(&sc->amr_bioq);
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#if __FreeBSD_version >= 500005
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/*
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* Initialise command-completion task.
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*/
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TASK_INIT(&sc->amr_task_complete, 0, amr_complete, sc);
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#endif
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debug(2, "queue init done");
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/*
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* Configure for this controller type.
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*/
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if (AMR_IS_QUARTZ(sc)) {
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sc->amr_submit_command = amr_quartz_submit_command;
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sc->amr_get_work = amr_quartz_get_work;
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} else {
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sc->amr_submit_command = amr_std_submit_command;
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sc->amr_get_work = amr_std_get_work;
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amr_std_attach_mailbox(sc);;
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}
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#ifdef AMR_BOARD_INIT
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if ((AMR_IS_QUARTZ(sc) ? amr_quartz_init(sc) : amr_std_init(sc))))
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return(ENXIO);
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#endif
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/*
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* Quiz controller for features and limits.
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*/
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if (amr_query_controller(sc))
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return(ENXIO);
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debug(2, "controller query complete");
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/*
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* Attach our 'real' SCSI channels to CAM.
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*/
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if (amr_cam_attach(sc))
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return(ENXIO);
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debug(2, "CAM attach done");
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/*
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* Create the control device.
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*/
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sc->amr_dev_t = make_dev(&amr_cdevsw, device_get_unit(sc->amr_dev), UID_ROOT, GID_OPERATOR,
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S_IRUSR | S_IWUSR, "amr%d", device_get_unit(sc->amr_dev));
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sc->amr_dev_t->si_drv1 = sc;
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/*
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* Schedule ourselves to bring the controller up once interrupts are
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* available.
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*/
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bzero(&sc->amr_ich, sizeof(struct intr_config_hook));
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sc->amr_ich.ich_func = amr_startup;
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sc->amr_ich.ich_arg = sc;
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if (config_intrhook_establish(&sc->amr_ich) != 0) {
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device_printf(sc->amr_dev, "can't establish configuration hook\n");
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return(ENOMEM);
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}
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/*
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* Print a little information about the controller.
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*/
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amr_describe_controller(sc);
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debug(2, "attach complete");
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return(0);
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}
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/********************************************************************************
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* Locate disk resources and attach children to them.
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*/
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static void
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amr_startup(void *arg)
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{
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struct amr_softc *sc = (struct amr_softc *)arg;
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struct amr_logdrive *dr;
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int i, error;
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debug_called(1);
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/* pull ourselves off the intrhook chain */
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config_intrhook_disestablish(&sc->amr_ich);
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/* get up-to-date drive information */
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if (amr_query_controller(sc)) {
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device_printf(sc->amr_dev, "can't scan controller for drives\n");
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return;
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}
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/* iterate over available drives */
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for (i = 0, dr = &sc->amr_drive[0]; (i < AMR_MAXLD) && (dr->al_size != 0xffffffff); i++, dr++) {
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/* are we already attached to this drive? */
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if (dr->al_disk == 0) {
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/* generate geometry information */
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if (dr->al_size > 0x200000) { /* extended translation? */
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dr->al_heads = 255;
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dr->al_sectors = 63;
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} else {
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dr->al_heads = 64;
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dr->al_sectors = 32;
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}
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dr->al_cylinders = dr->al_size / (dr->al_heads * dr->al_sectors);
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dr->al_disk = device_add_child(sc->amr_dev, NULL, -1);
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if (dr->al_disk == 0)
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device_printf(sc->amr_dev, "device_add_child failed\n");
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device_set_ivars(dr->al_disk, dr);
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}
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}
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if ((error = bus_generic_attach(sc->amr_dev)) != 0)
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device_printf(sc->amr_dev, "bus_generic_attach returned %d\n", error);
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/* mark controller back up */
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sc->amr_state &= ~AMR_STATE_SHUTDOWN;
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/* interrupts will be enabled before we do anything more */
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sc->amr_state |= AMR_STATE_INTEN;
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/*
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* Start the timeout routine.
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*/
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/* sc->amr_timeout = timeout(amr_periodic, sc, hz);*/
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return;
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}
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/*******************************************************************************
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* Free resources associated with a controller instance
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*/
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void
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amr_free(struct amr_softc *sc)
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{
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struct amr_command_cluster *acc;
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/* detach from CAM */
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amr_cam_detach(sc);
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/* cancel status timeout */
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untimeout(amr_periodic, sc, sc->amr_timeout);
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/* throw away any command buffers */
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while ((acc = TAILQ_FIRST(&sc->amr_cmd_clusters)) != NULL) {
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TAILQ_REMOVE(&sc->amr_cmd_clusters, acc, acc_link);
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amr_freecmd_cluster(acc);
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}
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}
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/*******************************************************************************
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* Receive a bio structure from a child device and queue it on a particular
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* disk resource, then poke the disk resource to start as much work as it can.
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*/
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int
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amr_submit_bio(struct amr_softc *sc, struct bio *bio)
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{
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debug_called(2);
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amr_enqueue_bio(sc, bio);
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amr_startio(sc);
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return(0);
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}
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/********************************************************************************
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* Accept an open operation on the control device.
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*/
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static int
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amr_open(dev_t dev, int flags, int fmt, d_thread_t *td)
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{
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int unit = minor(dev);
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struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit);
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debug_called(1);
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sc->amr_state |= AMR_STATE_OPEN;
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return(0);
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}
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/********************************************************************************
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* Accept the last close on the control device.
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*/
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static int
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amr_close(dev_t dev, int flags, int fmt, d_thread_t *td)
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{
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int unit = minor(dev);
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struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit);
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debug_called(1);
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sc->amr_state &= ~AMR_STATE_OPEN;
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return (0);
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}
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/********************************************************************************
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* Handle controller-specific control operations.
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*/
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static int
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amr_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *td)
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{
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struct amr_softc *sc = (struct amr_softc *)dev->si_drv1;
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int *arg = (int *)addr;
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struct amr_user_ioctl *au = (struct amr_user_ioctl *)addr;
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struct amr_command *ac;
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struct amr_mailbox_ioctl *mbi;
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struct amr_passthrough *ap;
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void *dp;
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int error;
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debug_called(1);
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error = 0;
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dp = NULL;
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ap = NULL;
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ac = NULL;
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switch(cmd) {
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case AMR_IO_VERSION:
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debug(1, "AMR_IO_VERSION");
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*arg = AMR_IO_VERSION_NUMBER;
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break;
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case AMR_IO_COMMAND:
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debug(1, "AMR_IO_COMMAND 0x%x", au->au_cmd[0]);
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/* handle inbound data buffer */
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if (au->au_length != 0) {
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if ((dp = malloc(au->au_length, M_DEVBUF, M_WAITOK)) == NULL) {
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error = ENOMEM;
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break;
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}
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if ((error = copyin(au->au_buffer, dp, au->au_length)) != 0)
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break;
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debug(2, "copyin %ld bytes from %p -> %p", au->au_length, au->au_buffer, dp);
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}
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if ((ac = amr_alloccmd(sc)) == NULL) {
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error = ENOMEM;
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break;
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}
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/* handle SCSI passthrough command */
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if (au->au_cmd[0] == AMR_CMD_PASS) {
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if ((ap = malloc(sizeof(*ap), M_DEVBUF, M_WAITOK | M_ZERO)) == NULL) {
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error = ENOMEM;
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break;
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}
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/* copy cdb */
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ap->ap_cdb_length = au->au_cmd[2];
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bcopy(&au->au_cmd[3], &ap->ap_cdb[0], ap->ap_cdb_length);
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/* build passthrough */
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ap->ap_timeout = au->au_cmd[ap->ap_cdb_length + 3] & 0x07;
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ap->ap_ars = (au->au_cmd[ap->ap_cdb_length + 3] & 0x08) ? 1 : 0;
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ap->ap_islogical = (au->au_cmd[ap->ap_cdb_length + 3] & 0x80) ? 1 : 0;
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ap->ap_logical_drive_no = au->au_cmd[ap->ap_cdb_length + 4];
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ap->ap_channel = au->au_cmd[ap->ap_cdb_length + 5];
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ap->ap_scsi_id = au->au_cmd[ap->ap_cdb_length + 6];
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ap->ap_request_sense_length = 14;
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ap->ap_data_transfer_length = au->au_length;
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/* XXX what about the request-sense area? does the caller want it? */
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|
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/* build command */
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ac->ac_data = ap;
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ac->ac_length = sizeof(*ap);
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ac->ac_flags |= AMR_CMD_DATAOUT;
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ac->ac_ccb_data = dp;
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ac->ac_ccb_length = au->au_length;
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if (au->au_direction & AMR_IO_READ)
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ac->ac_flags |= AMR_CMD_CCB_DATAIN;
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if (au->au_direction & AMR_IO_WRITE)
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ac->ac_flags |= AMR_CMD_CCB_DATAOUT;
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ac->ac_mailbox.mb_command = AMR_CMD_PASS;
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} else {
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/* direct command to controller */
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mbi = (struct amr_mailbox_ioctl *)&ac->ac_mailbox;
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/* copy pertinent mailbox items */
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mbi->mb_command = au->au_cmd[0];
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mbi->mb_channel = au->au_cmd[1];
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mbi->mb_param = au->au_cmd[2];
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mbi->mb_pad[0] = au->au_cmd[3];
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mbi->mb_drive = au->au_cmd[4];
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|
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/* build the command */
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ac->ac_data = dp;
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ac->ac_length = au->au_length;
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if (au->au_direction & AMR_IO_READ)
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ac->ac_flags |= AMR_CMD_DATAIN;
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if (au->au_direction & AMR_IO_WRITE)
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ac->ac_flags |= AMR_CMD_DATAOUT;
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}
|
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|
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/* run the command */
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if ((error = amr_wait_command(ac)) != 0)
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break;
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|
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/* copy out data and set status */
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if (au->au_length != 0)
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error = copyout(dp, au->au_buffer, au->au_length);
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debug(2, "copyout %ld bytes from %p -> %p", au->au_length, dp, au->au_buffer);
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if (dp != NULL)
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debug(2, "%16D", dp, " ");
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au->au_status = ac->ac_status;
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break;
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default:
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debug(1, "unknown ioctl 0x%lx", cmd);
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error = ENOIOCTL;
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|
break;
|
|
}
|
|
|
|
if (dp != NULL)
|
|
free(dp, M_DEVBUF);
|
|
if (ap != NULL)
|
|
free(ap, M_DEVBUF);
|
|
if (ac != NULL)
|
|
amr_releasecmd(ac);
|
|
return(error);
|
|
}
|
|
|
|
/********************************************************************************
|
|
********************************************************************************
|
|
Status Monitoring
|
|
********************************************************************************
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Perform a periodic check of the controller status
|
|
*/
|
|
static void
|
|
amr_periodic(void *data)
|
|
{
|
|
struct amr_softc *sc = (struct amr_softc *)data;
|
|
|
|
debug_called(2);
|
|
|
|
/* XXX perform periodic status checks here */
|
|
|
|
/* compensate for missed interrupts */
|
|
amr_done(sc);
|
|
|
|
/* reschedule */
|
|
sc->amr_timeout = timeout(amr_periodic, sc, hz);
|
|
}
|
|
|
|
/********************************************************************************
|
|
********************************************************************************
|
|
Command Wrappers
|
|
********************************************************************************
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Interrogate the controller for the operational parameters we require.
|
|
*/
|
|
static int
|
|
amr_query_controller(struct amr_softc *sc)
|
|
{
|
|
struct amr_enquiry3 *aex;
|
|
struct amr_prodinfo *ap;
|
|
struct amr_enquiry *ae;
|
|
int ldrv;
|
|
|
|
/*
|
|
* If we haven't found the real limit yet, let us have a couple of commands in
|
|
* order to be able to probe.
|
|
*/
|
|
if (sc->amr_maxio == 0)
|
|
sc->amr_maxio = 2;
|
|
|
|
/*
|
|
* Try to issue an ENQUIRY3 command
|
|
*/
|
|
if ((aex = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_ENQ3,
|
|
AMR_CONFIG_ENQ3_SOLICITED_FULL)) != NULL) {
|
|
|
|
/*
|
|
* Fetch current state of logical drives.
|
|
*/
|
|
for (ldrv = 0; ldrv < aex->ae_numldrives; ldrv++) {
|
|
sc->amr_drive[ldrv].al_size = aex->ae_drivesize[ldrv];
|
|
sc->amr_drive[ldrv].al_state = aex->ae_drivestate[ldrv];
|
|
sc->amr_drive[ldrv].al_properties = aex->ae_driveprop[ldrv];
|
|
debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size,
|
|
sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties);
|
|
}
|
|
free(aex, M_DEVBUF);
|
|
|
|
/*
|
|
* Get product info for channel count.
|
|
*/
|
|
if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) == NULL) {
|
|
device_printf(sc->amr_dev, "can't obtain product data from controller\n");
|
|
return(1);
|
|
}
|
|
sc->amr_maxdrives = 40;
|
|
sc->amr_maxchan = ap->ap_nschan;
|
|
sc->amr_maxio = ap->ap_maxio;
|
|
sc->amr_type |= AMR_TYPE_40LD;
|
|
free(ap, M_DEVBUF);
|
|
|
|
} else {
|
|
|
|
/* failed, try the 8LD ENQUIRY commands */
|
|
if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) == NULL) {
|
|
if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) == NULL) {
|
|
device_printf(sc->amr_dev, "can't obtain configuration data from controller\n");
|
|
return(1);
|
|
}
|
|
ae->ae_signature = 0;
|
|
}
|
|
|
|
/*
|
|
* Fetch current state of logical drives.
|
|
*/
|
|
for (ldrv = 0; ldrv < ae->ae_ldrv.al_numdrives; ldrv++) {
|
|
sc->amr_drive[ldrv].al_size = ae->ae_ldrv.al_size[ldrv];
|
|
sc->amr_drive[ldrv].al_state = ae->ae_ldrv.al_state[ldrv];
|
|
sc->amr_drive[ldrv].al_properties = ae->ae_ldrv.al_properties[ldrv];
|
|
debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size,
|
|
sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties);
|
|
}
|
|
|
|
sc->amr_maxdrives = 8;
|
|
sc->amr_maxchan = ae->ae_adapter.aa_channels;
|
|
sc->amr_maxio = ae->ae_adapter.aa_maxio;
|
|
free(ae, M_DEVBUF);
|
|
}
|
|
|
|
/*
|
|
* Mark remaining drives as unused.
|
|
*/
|
|
for (; ldrv < AMR_MAXLD; ldrv++)
|
|
sc->amr_drive[ldrv].al_size = 0xffffffff;
|
|
|
|
/*
|
|
* Cap the maximum number of outstanding I/Os. AMI's Linux driver doesn't trust
|
|
* the controller's reported value, and lockups have been seen when we do.
|
|
*/
|
|
sc->amr_maxio = imin(sc->amr_maxio, AMR_LIMITCMD);
|
|
|
|
return(0);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Run a generic enquiry-style command.
|
|
*/
|
|
static void *
|
|
amr_enquiry(struct amr_softc *sc, size_t bufsize, u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual)
|
|
{
|
|
struct amr_command *ac;
|
|
void *result;
|
|
u_int8_t *mbox;
|
|
int error;
|
|
|
|
debug_called(1);
|
|
|
|
error = 1;
|
|
result = NULL;
|
|
|
|
/* get ourselves a command buffer */
|
|
if ((ac = amr_alloccmd(sc)) == NULL)
|
|
goto out;
|
|
/* allocate the response structure */
|
|
if ((result = malloc(bufsize, M_DEVBUF, M_NOWAIT)) == NULL)
|
|
goto out;
|
|
/* set command flags */
|
|
ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT;
|
|
|
|
/* point the command at our data */
|
|
ac->ac_data = result;
|
|
ac->ac_length = bufsize;
|
|
|
|
/* build the command proper */
|
|
mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */
|
|
mbox[0] = cmd;
|
|
mbox[2] = cmdsub;
|
|
mbox[3] = cmdqual;
|
|
|
|
/* can't assume that interrupts are going to work here, so play it safe */
|
|
if (amr_poll_command(ac))
|
|
goto out;
|
|
error = ac->ac_status;
|
|
|
|
out:
|
|
if (ac != NULL)
|
|
amr_releasecmd(ac);
|
|
if ((error != 0) && (result != NULL)) {
|
|
free(result, M_DEVBUF);
|
|
result = NULL;
|
|
}
|
|
return(result);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Flush the controller's internal cache, return status.
|
|
*/
|
|
int
|
|
amr_flush(struct amr_softc *sc)
|
|
{
|
|
struct amr_command *ac;
|
|
int error;
|
|
|
|
/* get ourselves a command buffer */
|
|
error = 1;
|
|
if ((ac = amr_alloccmd(sc)) == NULL)
|
|
goto out;
|
|
/* set command flags */
|
|
ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT;
|
|
|
|
/* build the command proper */
|
|
ac->ac_mailbox.mb_command = AMR_CMD_FLUSH;
|
|
|
|
/* we have to poll, as the system may be going down or otherwise damaged */
|
|
if (amr_poll_command(ac))
|
|
goto out;
|
|
error = ac->ac_status;
|
|
|
|
out:
|
|
if (ac != NULL)
|
|
amr_releasecmd(ac);
|
|
return(error);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Try to find I/O work for the controller from one or more of the work queues.
|
|
*
|
|
* We make the assumption that if the controller is not ready to take a command
|
|
* at some given time, it will generate an interrupt at some later time when
|
|
* it is.
|
|
*/
|
|
void
|
|
amr_startio(struct amr_softc *sc)
|
|
{
|
|
struct amr_command *ac;
|
|
|
|
/* spin until something prevents us from doing any work */
|
|
for (;;) {
|
|
|
|
/* try to get a ready command */
|
|
ac = amr_dequeue_ready(sc);
|
|
|
|
/* if that failed, build a command from a bio */
|
|
if (ac == NULL)
|
|
(void)amr_bio_command(sc, &ac);
|
|
|
|
/* if that failed, build a command from a ccb */
|
|
if (ac == NULL)
|
|
(void)amr_cam_command(sc, &ac);
|
|
|
|
/* if we don't have anything to do, give up */
|
|
if (ac == NULL)
|
|
break;
|
|
|
|
/* try to give the command to the controller; if this fails save it for later and give up */
|
|
if (amr_start(ac)) {
|
|
debug(2, "controller busy, command deferred");
|
|
amr_requeue_ready(ac); /* XXX schedule retry very soon? */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Handle completion of an I/O command.
|
|
*/
|
|
static void
|
|
amr_completeio(struct amr_command *ac)
|
|
{
|
|
struct amr_softc *sc = ac->ac_sc;
|
|
|
|
if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */
|
|
ac->ac_bio->bio_error = EIO;
|
|
ac->ac_bio->bio_flags |= BIO_ERROR;
|
|
|
|
device_printf(sc->amr_dev, "I/O error - 0x%x\n", ac->ac_status);
|
|
/* amr_printcommand(ac);*/
|
|
}
|
|
amrd_intr(ac->ac_bio);
|
|
amr_releasecmd(ac);
|
|
}
|
|
|
|
/********************************************************************************
|
|
********************************************************************************
|
|
Command Processing
|
|
********************************************************************************
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Convert a bio off the top of the bio queue into a command.
|
|
*/
|
|
static int
|
|
amr_bio_command(struct amr_softc *sc, struct amr_command **acp)
|
|
{
|
|
struct amr_command *ac;
|
|
struct amrd_softc *amrd;
|
|
struct bio *bio;
|
|
int error;
|
|
int blkcount;
|
|
int driveno;
|
|
int cmd;
|
|
|
|
ac = NULL;
|
|
error = 0;
|
|
|
|
/* get a bio to work on */
|
|
if ((bio = amr_dequeue_bio(sc)) == NULL)
|
|
goto out;
|
|
|
|
/* get a command */
|
|
if ((ac = amr_alloccmd(sc)) == NULL) {
|
|
error = ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
/* connect the bio to the command */
|
|
ac->ac_complete = amr_completeio;
|
|
ac->ac_bio = bio;
|
|
ac->ac_data = bio->bio_data;
|
|
ac->ac_length = bio->bio_bcount;
|
|
if (BIO_IS_READ(bio)) {
|
|
ac->ac_flags |= AMR_CMD_DATAIN;
|
|
cmd = AMR_CMD_LREAD;
|
|
} else {
|
|
ac->ac_flags |= AMR_CMD_DATAOUT;
|
|
cmd = AMR_CMD_LWRITE;
|
|
}
|
|
amrd = (struct amrd_softc *)bio->bio_dev->si_drv1;
|
|
driveno = amrd->amrd_drive - sc->amr_drive;
|
|
blkcount = (bio->bio_bcount + AMR_BLKSIZE - 1) / AMR_BLKSIZE;
|
|
|
|
ac->ac_mailbox.mb_command = cmd;
|
|
ac->ac_mailbox.mb_blkcount = blkcount;
|
|
ac->ac_mailbox.mb_lba = bio->bio_pblkno;
|
|
ac->ac_mailbox.mb_drive = driveno;
|
|
/* we fill in the s/g related data when the command is mapped */
|
|
|
|
if ((bio->bio_pblkno + blkcount) > sc->amr_drive[driveno].al_size)
|
|
device_printf(sc->amr_dev, "I/O beyond end of unit (%lld,%d > %lu)\n",
|
|
(long long)bio->bio_pblkno, blkcount,
|
|
(u_long)sc->amr_drive[driveno].al_size);
|
|
|
|
out:
|
|
if (error != 0) {
|
|
if (ac != NULL)
|
|
amr_releasecmd(ac);
|
|
if (bio != NULL) /* this breaks ordering... */
|
|
amr_enqueue_bio(sc, bio);
|
|
}
|
|
*acp = ac;
|
|
return(error);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Take a command, submit it to the controller and sleep until it completes
|
|
* or fails. Interrupts must be enabled, returns nonzero on error.
|
|
*/
|
|
static int
|
|
amr_wait_command(struct amr_command *ac)
|
|
{
|
|
int error, count;
|
|
|
|
debug_called(1);
|
|
|
|
ac->ac_complete = NULL;
|
|
ac->ac_flags |= AMR_CMD_SLEEP;
|
|
if ((error = amr_start(ac)) != 0)
|
|
return(error);
|
|
|
|
count = 0;
|
|
/* XXX better timeout? */
|
|
while ((ac->ac_flags & AMR_CMD_BUSY) && (count < 30)) {
|
|
tsleep(ac, PRIBIO | PCATCH, "amrwcmd", hz);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Take a command, submit it to the controller and busy-wait for it to return.
|
|
* Returns nonzero on error. Can be safely called with interrupts enabled.
|
|
*/
|
|
static int
|
|
amr_poll_command(struct amr_command *ac)
|
|
{
|
|
struct amr_softc *sc = ac->ac_sc;
|
|
int error, count;
|
|
|
|
debug_called(2);
|
|
|
|
ac->ac_complete = NULL;
|
|
if ((error = amr_start(ac)) != 0)
|
|
return(error);
|
|
|
|
count = 0;
|
|
do {
|
|
/*
|
|
* Poll for completion, although the interrupt handler may beat us to it.
|
|
* Note that the timeout here is somewhat arbitrary.
|
|
*/
|
|
amr_done(sc);
|
|
DELAY(1000);
|
|
} while ((ac->ac_flags & AMR_CMD_BUSY) && (count++ < 1000));
|
|
if (!(ac->ac_flags & AMR_CMD_BUSY)) {
|
|
error = 0;
|
|
} else {
|
|
/* XXX the slot is now marked permanently busy */
|
|
error = EIO;
|
|
device_printf(sc->amr_dev, "polled command timeout\n");
|
|
}
|
|
return(error);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Get a free command slot for a command if it doesn't already have one.
|
|
*
|
|
* May be safely called multiple times for a given command.
|
|
*/
|
|
static int
|
|
amr_getslot(struct amr_command *ac)
|
|
{
|
|
struct amr_softc *sc = ac->ac_sc;
|
|
int s, slot, limit, error;
|
|
|
|
debug_called(3);
|
|
|
|
/* if the command already has a slot, don't try to give it another one */
|
|
if (ac->ac_slot != 0)
|
|
return(0);
|
|
|
|
/* enforce slot usage limit */
|
|
limit = (ac->ac_flags & AMR_CMD_PRIORITY) ? sc->amr_maxio : sc->amr_maxio - 4;
|
|
if (sc->amr_busyslots > limit)
|
|
return(EBUSY);
|
|
|
|
/*
|
|
* Allocate a slot. XXX linear scan is slow
|
|
*/
|
|
error = EBUSY;
|
|
s = splbio();
|
|
for (slot = 0; slot < sc->amr_maxio; slot++) {
|
|
if (sc->amr_busycmd[slot] == NULL) {
|
|
sc->amr_busycmd[slot] = ac;
|
|
sc->amr_busyslots++;
|
|
ac->ac_slot = slot;
|
|
error = 0;
|
|
break;
|
|
}
|
|
}
|
|
splx(s);
|
|
|
|
return(error);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Map/unmap (ac)'s data in the controller's addressable space as required.
|
|
*
|
|
* These functions may be safely called multiple times on a given command.
|
|
*/
|
|
static void
|
|
amr_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error)
|
|
{
|
|
struct amr_command *ac = (struct amr_command *)arg;
|
|
struct amr_softc *sc = ac->ac_sc;
|
|
struct amr_sgentry *sg;
|
|
int i;
|
|
u_int8_t *sgc;
|
|
|
|
debug_called(3);
|
|
|
|
/* get base address of s/g table */
|
|
sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG);
|
|
|
|
/* save data physical address */
|
|
ac->ac_dataphys = segs[0].ds_addr;
|
|
|
|
/* for AMR_CMD_CONFIG the s/g count goes elsewhere */
|
|
if (ac->ac_mailbox.mb_command == AMR_CMD_CONFIG) {
|
|
sgc = &(((struct amr_mailbox_ioctl *)&ac->ac_mailbox)->mb_param);
|
|
} else {
|
|
sgc = &ac->ac_mailbox.mb_nsgelem;
|
|
}
|
|
|
|
/* decide whether we need to populate the s/g table */
|
|
if (nsegments < 2) {
|
|
*sgc = 0;
|
|
ac->ac_mailbox.mb_nsgelem = 0;
|
|
ac->ac_mailbox.mb_physaddr = ac->ac_dataphys;
|
|
} else {
|
|
ac->ac_mailbox.mb_nsgelem = nsegments;
|
|
*sgc = nsegments;
|
|
ac->ac_mailbox.mb_physaddr = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry));
|
|
for (i = 0; i < nsegments; i++, sg++) {
|
|
sg->sg_addr = segs[i].ds_addr;
|
|
sg->sg_count = segs[i].ds_len;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
amr_setup_ccbmap(void *arg, bus_dma_segment_t *segs, int nsegments, int error)
|
|
{
|
|
struct amr_command *ac = (struct amr_command *)arg;
|
|
struct amr_softc *sc = ac->ac_sc;
|
|
struct amr_sgentry *sg;
|
|
struct amr_passthrough *ap = (struct amr_passthrough *)ac->ac_data;
|
|
int i;
|
|
|
|
/* get base address of s/g table */
|
|
sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG);
|
|
|
|
/* decide whether we need to populate the s/g table */
|
|
if (nsegments < 2) {
|
|
ap->ap_no_sg_elements = 0;
|
|
ap->ap_data_transfer_address = segs[0].ds_addr;
|
|
} else {
|
|
/* save s/g table information in passthrough */
|
|
ap->ap_no_sg_elements = nsegments;
|
|
ap->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry));
|
|
/* populate s/g table (overwrites previous call which mapped the passthrough) */
|
|
for (i = 0; i < nsegments; i++, sg++) {
|
|
sg->sg_addr = segs[i].ds_addr;
|
|
sg->sg_count = segs[i].ds_len;
|
|
debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count);
|
|
}
|
|
}
|
|
|
|
debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot,
|
|
ap->ap_no_sg_elements, ap->ap_data_transfer_address, ac->ac_dataphys);
|
|
}
|
|
|
|
static void
|
|
amr_mapcmd(struct amr_command *ac)
|
|
{
|
|
struct amr_softc *sc = ac->ac_sc;
|
|
|
|
debug_called(3);
|
|
|
|
/* if the command involves data at all, and hasn't been mapped */
|
|
if (!(ac->ac_flags & AMR_CMD_MAPPED)) {
|
|
|
|
if (ac->ac_data != NULL) {
|
|
/* map the data buffers into bus space and build the s/g list */
|
|
bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_dmamap, ac->ac_data, ac->ac_length,
|
|
amr_setup_dmamap, ac, 0);
|
|
if (ac->ac_flags & AMR_CMD_DATAIN)
|
|
bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREREAD);
|
|
if (ac->ac_flags & AMR_CMD_DATAOUT)
|
|
bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREWRITE);
|
|
}
|
|
|
|
if (ac->ac_ccb_data != NULL) {
|
|
bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, ac->ac_ccb_data, ac->ac_ccb_length,
|
|
amr_setup_ccbmap, ac, 0);
|
|
if (ac->ac_flags & AMR_CMD_CCB_DATAIN)
|
|
bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREREAD);
|
|
if (ac->ac_flags & AMR_CMD_CCB_DATAOUT)
|
|
bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREWRITE);
|
|
}
|
|
ac->ac_flags |= AMR_CMD_MAPPED;
|
|
}
|
|
}
|
|
|
|
static void
|
|
amr_unmapcmd(struct amr_command *ac)
|
|
{
|
|
struct amr_softc *sc = ac->ac_sc;
|
|
|
|
debug_called(3);
|
|
|
|
/* if the command involved data at all and was mapped */
|
|
if (ac->ac_flags & AMR_CMD_MAPPED) {
|
|
|
|
if (ac->ac_data != NULL) {
|
|
if (ac->ac_flags & AMR_CMD_DATAIN)
|
|
bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTREAD);
|
|
if (ac->ac_flags & AMR_CMD_DATAOUT)
|
|
bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE);
|
|
bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap);
|
|
}
|
|
|
|
if (ac->ac_ccb_data != NULL) {
|
|
if (ac->ac_flags & AMR_CMD_CCB_DATAIN)
|
|
bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTREAD);
|
|
if (ac->ac_flags & AMR_CMD_CCB_DATAOUT)
|
|
bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTWRITE);
|
|
bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_ccb_dmamap);
|
|
}
|
|
ac->ac_flags &= ~AMR_CMD_MAPPED;
|
|
}
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Take a command and give it to the controller, returns 0 if successful, or
|
|
* EBUSY if the command should be retried later.
|
|
*/
|
|
static int
|
|
amr_start(struct amr_command *ac)
|
|
{
|
|
struct amr_softc *sc = ac->ac_sc;
|
|
int done, s, i;
|
|
|
|
debug_called(3);
|
|
|
|
/* mark command as busy so that polling consumer can tell */
|
|
ac->ac_flags |= AMR_CMD_BUSY;
|
|
|
|
/* get a command slot (freed in amr_done) */
|
|
if (amr_getslot(ac))
|
|
return(EBUSY);
|
|
|
|
/* now we have a slot, we can map the command (unmapped in amr_complete) */
|
|
amr_mapcmd(ac);
|
|
|
|
/* mark the new mailbox we are going to copy in as busy */
|
|
ac->ac_mailbox.mb_busy = 1;
|
|
|
|
/* clear the poll/ack fields in the mailbox */
|
|
sc->amr_mailbox->mb_poll = 0;
|
|
sc->amr_mailbox->mb_ack = 0;
|
|
|
|
/*
|
|
* Save the slot number so that we can locate this command when complete.
|
|
* Note that ident = 0 seems to be special, so we don't use it.
|
|
*/
|
|
ac->ac_mailbox.mb_ident = ac->ac_slot + 1;
|
|
|
|
/*
|
|
* Spin waiting for the mailbox, give up after ~1 second. We expect the
|
|
* controller to be able to handle our I/O.
|
|
*
|
|
* XXX perhaps we should wait for less time, and count on the deferred command
|
|
* handling to deal with retries?
|
|
*/
|
|
debug(4, "wait for mailbox");
|
|
for (i = 10000, done = 0; (i > 0) && !done; i--) {
|
|
s = splbio();
|
|
|
|
/* is the mailbox free? */
|
|
if (sc->amr_mailbox->mb_busy == 0) {
|
|
debug(4, "got mailbox");
|
|
sc->amr_mailbox64->mb64_segment = 0;
|
|
bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE);
|
|
done = 1;
|
|
|
|
/* not free, spin waiting */
|
|
} else {
|
|
debug(4, "busy flag %x\n", sc->amr_mailbox->mb_busy);
|
|
/* this is somewhat ugly */
|
|
DELAY(100);
|
|
}
|
|
splx(s); /* drop spl to allow completion interrupts */
|
|
}
|
|
|
|
/*
|
|
* Now give the command to the controller
|
|
*/
|
|
if (done) {
|
|
if (sc->amr_submit_command(sc)) {
|
|
/* the controller wasn't ready to take the command, forget that we tried to post it */
|
|
sc->amr_mailbox->mb_busy = 0;
|
|
return(EBUSY);
|
|
}
|
|
debug(3, "posted command");
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* The controller wouldn't take the command. Return the command as busy
|
|
* so that it is retried later.
|
|
*/
|
|
return(EBUSY);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Extract one or more completed commands from the controller (sc)
|
|
*
|
|
* Returns nonzero if any commands on the work queue were marked as completed.
|
|
*/
|
|
int
|
|
amr_done(struct amr_softc *sc)
|
|
{
|
|
struct amr_command *ac;
|
|
struct amr_mailbox mbox;
|
|
int i, idx, result;
|
|
|
|
debug_called(3);
|
|
|
|
/* See if there's anything for us to do */
|
|
result = 0;
|
|
|
|
/* loop collecting completed commands */
|
|
for (;;) {
|
|
/* poll for a completed command's identifier and status */
|
|
if (sc->amr_get_work(sc, &mbox)) {
|
|
result = 1;
|
|
|
|
/* iterate over completed commands in this result */
|
|
for (i = 0; i < mbox.mb_nstatus; i++) {
|
|
/* get pointer to busy command */
|
|
idx = mbox.mb_completed[i] - 1;
|
|
ac = sc->amr_busycmd[idx];
|
|
|
|
/* really a busy command? */
|
|
if (ac != NULL) {
|
|
|
|
/* pull the command from the busy index */
|
|
sc->amr_busycmd[idx] = NULL;
|
|
sc->amr_busyslots--;
|
|
|
|
/* save status for later use */
|
|
ac->ac_status = mbox.mb_status;
|
|
amr_enqueue_completed(ac);
|
|
debug(3, "completed command with status %x", mbox.mb_status);
|
|
} else {
|
|
device_printf(sc->amr_dev, "bad slot %d completed\n", idx);
|
|
}
|
|
}
|
|
} else {
|
|
break; /* no work */
|
|
}
|
|
}
|
|
|
|
/* if we've completed any commands, try posting some more */
|
|
if (result)
|
|
amr_startio(sc);
|
|
|
|
/* handle completion and timeouts */
|
|
#if __FreeBSD_version >= 500005
|
|
if (sc->amr_state & AMR_STATE_INTEN)
|
|
taskqueue_enqueue(taskqueue_swi, &sc->amr_task_complete);
|
|
else
|
|
#endif
|
|
amr_complete(sc, 0);
|
|
|
|
return(result);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Do completion processing on done commands on (sc)
|
|
*/
|
|
static void
|
|
amr_complete(void *context, int pending)
|
|
{
|
|
struct amr_softc *sc = (struct amr_softc *)context;
|
|
struct amr_command *ac;
|
|
|
|
debug_called(3);
|
|
|
|
/* pull completed commands off the queue */
|
|
for (;;) {
|
|
ac = amr_dequeue_completed(sc);
|
|
if (ac == NULL)
|
|
break;
|
|
|
|
/* unmap the command's data buffer */
|
|
amr_unmapcmd(ac);
|
|
|
|
/* unbusy the command */
|
|
ac->ac_flags &= ~AMR_CMD_BUSY;
|
|
|
|
/*
|
|
* Is there a completion handler?
|
|
*/
|
|
if (ac->ac_complete != NULL) {
|
|
ac->ac_complete(ac);
|
|
|
|
/*
|
|
* Is someone sleeping on this one?
|
|
*/
|
|
} else if (ac->ac_flags & AMR_CMD_SLEEP) {
|
|
wakeup(ac);
|
|
}
|
|
}
|
|
}
|
|
|
|
/********************************************************************************
|
|
********************************************************************************
|
|
Command Buffer Management
|
|
********************************************************************************
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Get a new command buffer.
|
|
*
|
|
* This may return NULL in low-memory cases.
|
|
*
|
|
* If possible, we recycle a command buffer that's been used before.
|
|
*/
|
|
struct amr_command *
|
|
amr_alloccmd(struct amr_softc *sc)
|
|
{
|
|
struct amr_command *ac;
|
|
|
|
debug_called(3);
|
|
|
|
ac = amr_dequeue_free(sc);
|
|
if (ac == NULL) {
|
|
amr_alloccmd_cluster(sc);
|
|
ac = amr_dequeue_free(sc);
|
|
}
|
|
if (ac == NULL)
|
|
return(NULL);
|
|
|
|
/* clear out significant fields */
|
|
ac->ac_slot = 0;
|
|
ac->ac_status = 0;
|
|
bzero(&ac->ac_mailbox, sizeof(struct amr_mailbox));
|
|
ac->ac_flags = 0;
|
|
ac->ac_bio = NULL;
|
|
ac->ac_data = NULL;
|
|
ac->ac_ccb_data = NULL;
|
|
ac->ac_complete = NULL;
|
|
return(ac);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Release a command buffer for recycling.
|
|
*/
|
|
void
|
|
amr_releasecmd(struct amr_command *ac)
|
|
{
|
|
debug_called(3);
|
|
|
|
amr_enqueue_free(ac);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Allocate a new command cluster and initialise it.
|
|
*/
|
|
static void
|
|
amr_alloccmd_cluster(struct amr_softc *sc)
|
|
{
|
|
struct amr_command_cluster *acc;
|
|
struct amr_command *ac;
|
|
int s, i;
|
|
|
|
acc = malloc(AMR_CMD_CLUSTERSIZE, M_DEVBUF, M_NOWAIT);
|
|
if (acc != NULL) {
|
|
s = splbio();
|
|
TAILQ_INSERT_TAIL(&sc->amr_cmd_clusters, acc, acc_link);
|
|
splx(s);
|
|
for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) {
|
|
ac = &acc->acc_command[i];
|
|
bzero(ac, sizeof(*ac));
|
|
ac->ac_sc = sc;
|
|
if (!bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_dmamap) &&
|
|
!bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_ccb_dmamap))
|
|
amr_releasecmd(ac);
|
|
}
|
|
}
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Free a command cluster
|
|
*/
|
|
static void
|
|
amr_freecmd_cluster(struct amr_command_cluster *acc)
|
|
{
|
|
struct amr_softc *sc = acc->acc_command[0].ac_sc;
|
|
int i;
|
|
|
|
for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++)
|
|
bus_dmamap_destroy(sc->amr_buffer_dmat, acc->acc_command[i].ac_dmamap);
|
|
free(acc, M_DEVBUF);
|
|
}
|
|
|
|
/********************************************************************************
|
|
********************************************************************************
|
|
Interface-specific Shims
|
|
********************************************************************************
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Tell the controller that the mailbox contains a valid command
|
|
*/
|
|
static int
|
|
amr_quartz_submit_command(struct amr_softc *sc)
|
|
{
|
|
debug_called(3);
|
|
|
|
if (AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT)
|
|
return(EBUSY);
|
|
AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT);
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
amr_std_submit_command(struct amr_softc *sc)
|
|
{
|
|
debug_called(3);
|
|
|
|
if (AMR_SGET_MBSTAT(sc) & AMR_SMBOX_BUSYFLAG)
|
|
return(EBUSY);
|
|
AMR_SPOST_COMMAND(sc);
|
|
return(0);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Claim any work that the controller has completed; acknowledge completion,
|
|
* save details of the completion in (mbsave)
|
|
*/
|
|
static int
|
|
amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave)
|
|
{
|
|
int s, worked;
|
|
u_int32_t outd;
|
|
|
|
debug_called(3);
|
|
|
|
worked = 0;
|
|
s = splbio();
|
|
|
|
/* work waiting for us? */
|
|
if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) {
|
|
|
|
/* save mailbox, which contains a list of completed commands */
|
|
bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave));
|
|
|
|
/* acknowledge interrupt */
|
|
AMR_QPUT_ODB(sc, AMR_QODB_READY);
|
|
|
|
/* acknowledge that we have the commands */
|
|
AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK);
|
|
|
|
#ifndef AMR_QUARTZ_GOFASTER
|
|
/*
|
|
* This waits for the controller to notice that we've taken the
|
|
* command from it. It's very inefficient, and we shouldn't do it,
|
|
* but if we remove this code, we stop completing commands under
|
|
* load.
|
|
*
|
|
* Peter J says we shouldn't do this. The documentation says we
|
|
* should. Who is right?
|
|
*/
|
|
while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK)
|
|
; /* XXX aiee! what if it dies? */
|
|
#endif
|
|
|
|
worked = 1; /* got some work */
|
|
}
|
|
|
|
splx(s);
|
|
return(worked);
|
|
}
|
|
|
|
static int
|
|
amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave)
|
|
{
|
|
int s, worked;
|
|
u_int8_t istat;
|
|
|
|
debug_called(3);
|
|
|
|
worked = 0;
|
|
s = splbio();
|
|
|
|
/* check for valid interrupt status */
|
|
istat = AMR_SGET_ISTAT(sc);
|
|
if ((istat & AMR_SINTR_VALID) != 0) {
|
|
AMR_SPUT_ISTAT(sc, istat); /* ack interrupt status */
|
|
|
|
/* save mailbox, which contains a list of completed commands */
|
|
bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave));
|
|
|
|
AMR_SACK_INTERRUPT(sc); /* acknowledge we have the mailbox */
|
|
worked = 1;
|
|
}
|
|
|
|
splx(s);
|
|
return(worked);
|
|
}
|
|
|
|
/********************************************************************************
|
|
* Notify the controller of the mailbox location.
|
|
*/
|
|
static void
|
|
amr_std_attach_mailbox(struct amr_softc *sc)
|
|
{
|
|
|
|
/* program the mailbox physical address */
|
|
AMR_SBYTE_SET(sc, AMR_SMBOX_0, sc->amr_mailboxphys & 0xff);
|
|
AMR_SBYTE_SET(sc, AMR_SMBOX_1, (sc->amr_mailboxphys >> 8) & 0xff);
|
|
AMR_SBYTE_SET(sc, AMR_SMBOX_2, (sc->amr_mailboxphys >> 16) & 0xff);
|
|
AMR_SBYTE_SET(sc, AMR_SMBOX_3, (sc->amr_mailboxphys >> 24) & 0xff);
|
|
AMR_SBYTE_SET(sc, AMR_SMBOX_ENABLE, AMR_SMBOX_ADDR);
|
|
|
|
/* clear any outstanding interrupt and enable interrupts proper */
|
|
AMR_SACK_INTERRUPT(sc);
|
|
AMR_SENABLE_INTR(sc);
|
|
}
|
|
|
|
#ifdef AMR_BOARD_INIT
|
|
/********************************************************************************
|
|
* Initialise the controller
|
|
*/
|
|
static int
|
|
amr_quartz_init(struct amr_softc *sc)
|
|
{
|
|
int status, ostatus;
|
|
|
|
device_printf(sc->amr_dev, "initial init status %x\n", AMR_QGET_INITSTATUS(sc));
|
|
|
|
AMR_QRESET(sc);
|
|
|
|
ostatus = 0xff;
|
|
while ((status = AMR_QGET_INITSTATUS(sc)) != AMR_QINIT_DONE) {
|
|
if (status != ostatus) {
|
|
device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_qinit, status));
|
|
ostatus = status;
|
|
}
|
|
switch (status) {
|
|
case AMR_QINIT_NOMEM:
|
|
return(ENOMEM);
|
|
|
|
case AMR_QINIT_SCAN:
|
|
/* XXX we could print channel/target here */
|
|
break;
|
|
}
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
amr_std_init(struct amr_softc *sc)
|
|
{
|
|
int status, ostatus;
|
|
|
|
device_printf(sc->amr_dev, "initial init status %x\n", AMR_SGET_INITSTATUS(sc));
|
|
|
|
AMR_SRESET(sc);
|
|
|
|
ostatus = 0xff;
|
|
while ((status = AMR_SGET_INITSTATUS(sc)) != AMR_SINIT_DONE) {
|
|
if (status != ostatus) {
|
|
device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_sinit, status));
|
|
ostatus = status;
|
|
}
|
|
switch (status) {
|
|
case AMR_SINIT_NOMEM:
|
|
return(ENOMEM);
|
|
|
|
case AMR_SINIT_INPROG:
|
|
/* XXX we could print channel/target here? */
|
|
break;
|
|
}
|
|
}
|
|
return(0);
|
|
}
|
|
#endif
|
|
|
|
/********************************************************************************
|
|
********************************************************************************
|
|
Debugging
|
|
********************************************************************************
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Identify the controller and print some information about it.
|
|
*/
|
|
static void
|
|
amr_describe_controller(struct amr_softc *sc)
|
|
{
|
|
struct amr_prodinfo *ap;
|
|
struct amr_enquiry *ae;
|
|
char *prod;
|
|
|
|
/*
|
|
* Try to get 40LD product info, which tells us what the card is labelled as.
|
|
*/
|
|
if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) != NULL) {
|
|
device_printf(sc->amr_dev, "<LSILogic %.80s> Firmware %.16s, BIOS %.16s, %dMB RAM\n",
|
|
ap->ap_product, ap->ap_firmware, ap->ap_bios,
|
|
ap->ap_memsize);
|
|
|
|
free(ap, M_DEVBUF);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Try 8LD extended ENQUIRY to get controller signature, and use lookup table.
|
|
*/
|
|
if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) != NULL) {
|
|
prod = amr_describe_code(amr_table_adaptertype, ae->ae_signature);
|
|
|
|
} else if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) != NULL) {
|
|
|
|
/*
|
|
* Try to work it out based on the PCI signatures.
|
|
*/
|
|
switch (pci_get_device(sc->amr_dev)) {
|
|
case 0x9010:
|
|
prod = "Series 428";
|
|
break;
|
|
case 0x9060:
|
|
prod = "Series 434";
|
|
break;
|
|
default:
|
|
prod = "unknown controller";
|
|
break;
|
|
}
|
|
} else {
|
|
prod = "unsupported controller";
|
|
}
|
|
|
|
/*
|
|
* HP NetRaid controllers have a special encoding of the firmware and
|
|
* BIOS versions. The AMI version seems to have it as strings whereas
|
|
* the HP version does it with a leading uppercase character and two
|
|
* binary numbers.
|
|
*/
|
|
|
|
if(ae->ae_adapter.aa_firmware[2] >= 'A' &&
|
|
ae->ae_adapter.aa_firmware[2] <= 'Z' &&
|
|
ae->ae_adapter.aa_firmware[1] < ' ' &&
|
|
ae->ae_adapter.aa_firmware[0] < ' ' &&
|
|
ae->ae_adapter.aa_bios[2] >= 'A' &&
|
|
ae->ae_adapter.aa_bios[2] <= 'Z' &&
|
|
ae->ae_adapter.aa_bios[1] < ' ' &&
|
|
ae->ae_adapter.aa_bios[0] < ' ') {
|
|
|
|
/* this looks like we have an HP NetRaid version of the MegaRaid */
|
|
|
|
if(ae->ae_signature == AMR_SIG_438) {
|
|
/* the AMI 438 is an NetRaid 3si in HP-land */
|
|
prod = "HP NetRaid 3si";
|
|
}
|
|
|
|
device_printf(sc->amr_dev, "<%s> Firmware %c.%02d.%02d, BIOS %c.%02d.%02d, %dMB RAM\n",
|
|
prod, ae->ae_adapter.aa_firmware[2],
|
|
ae->ae_adapter.aa_firmware[1],
|
|
ae->ae_adapter.aa_firmware[0],
|
|
ae->ae_adapter.aa_bios[2],
|
|
ae->ae_adapter.aa_bios[1],
|
|
ae->ae_adapter.aa_bios[0],
|
|
ae->ae_adapter.aa_memorysize);
|
|
} else {
|
|
device_printf(sc->amr_dev, "<%s> Firmware %.4s, BIOS %.4s, %dMB RAM\n",
|
|
prod, ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios,
|
|
ae->ae_adapter.aa_memorysize);
|
|
}
|
|
free(ae, M_DEVBUF);
|
|
}
|
|
|
|
#ifdef AMR_DEBUG
|
|
/********************************************************************************
|
|
* Print the command (ac) in human-readable format
|
|
*/
|
|
static void
|
|
amr_printcommand(struct amr_command *ac)
|
|
{
|
|
struct amr_softc *sc = ac->ac_sc;
|
|
struct amr_sgentry *sg;
|
|
int i;
|
|
|
|
device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n",
|
|
ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive);
|
|
device_printf(sc->amr_dev, "blkcount %d lba %d\n",
|
|
ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba);
|
|
device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length);
|
|
device_printf(sc->amr_dev, "sg physaddr %08x nsg %d\n",
|
|
ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem);
|
|
device_printf(sc->amr_dev, "ccb %p bio %p\n", ac->ac_ccb_data, ac->ac_bio);
|
|
|
|
/* get base address of s/g table */
|
|
sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG);
|
|
for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++)
|
|
device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count);
|
|
}
|
|
#endif
|