/*- * Copyright (c) 1999 Jonathan Lemon * Copyright (c) 1999, 2000 Michael Smith * Copyright (c) 2000 BSDi * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ /* * Disk driver for AMI MegaRaid controllers */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* prototypes */ static int amrd_probe(device_t dev); static int amrd_attach(device_t dev); static int amrd_detach(device_t dev); static d_open_t amrd_open; static d_close_t amrd_close; static d_strategy_t amrd_strategy; static d_ioctl_t amrd_ioctl; #define AMRD_CDEV_MAJOR 133 static struct cdevsw amrd_cdevsw = { /* open */ amrd_open, /* close */ amrd_close, /* read */ physread, /* write */ physwrite, /* ioctl */ amrd_ioctl, /* poll */ nopoll, /* mmap */ nommap, /* strategy */ amrd_strategy, /* name */ "amrd", /* maj */ AMRD_CDEV_MAJOR, /* dump */ nodump, /* psize */ nopsize, /* flags */ D_DISK, }; static devclass_t amrd_devclass; static struct cdevsw amrddisk_cdevsw; #ifdef FREEBSD_4 static int disks_registered = 0; #endif static device_method_t amrd_methods[] = { DEVMETHOD(device_probe, amrd_probe), DEVMETHOD(device_attach, amrd_attach), DEVMETHOD(device_detach, amrd_detach), { 0, 0 } }; static driver_t amrd_driver = { "amrd", amrd_methods, sizeof(struct amrd_softc) }; DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0); static int amrd_open(dev_t dev, int flags, int fmt, struct proc *p) { struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; struct disklabel *label; debug_called(1); if (sc == NULL) return (ENXIO); /* controller not active? */ if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) return(ENXIO); label = &sc->amrd_disk.d_label; bzero(label, sizeof(*label)); label->d_type = DTYPE_SCSI; label->d_secsize = AMR_BLKSIZE; label->d_nsectors = sc->amrd_drive->al_sectors; label->d_ntracks = sc->amrd_drive->al_heads; label->d_ncylinders = sc->amrd_drive->al_cylinders; label->d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; label->d_secperunit = sc->amrd_drive->al_size; sc->amrd_flags |= AMRD_OPEN; return (0); } static int amrd_close(dev_t dev, int flags, int fmt, struct proc *p) { struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; debug_called(1); if (sc == NULL) return (ENXIO); sc->amrd_flags &= ~AMRD_OPEN; return (0); } static int amrd_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct proc *p) { return (ENOTTY); } /* * Read/write routine for a buffer. Finds the proper unit, range checks * arguments, and schedules the transfer. Does not wait for the transfer * to complete. Multi-page transfers are supported. All I/O requests must * be a multiple of a sector in length. */ static void amrd_strategy(struct bio *bio) { struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1; /* bogus disk? */ if (sc == NULL) { bio->bio_error = EINVAL; goto bad; } devstat_start_transaction(&sc->amrd_stats); amr_submit_bio(sc->amrd_controller, bio); return; bad: bio->bio_flags |= BIO_ERROR; /* * Correctly set the buf to indicate a completed transfer */ bio->bio_resid = bio->bio_bcount; biodone(bio); return; } void amrd_intr(void *data) { struct bio *bio = (struct bio *)data; struct amrd_softc *sc = (struct amrd_softc *)bio->bio_dev->si_drv1; debug_called(2); if (bio->bio_flags & BIO_ERROR) { bio->bio_error = EIO; debug(1, "i/o error\n"); } else { bio->bio_resid = 0; } biofinish(bio, &sc->amrd_stats, 0); } static int amrd_probe(device_t dev) { debug_called(1); device_set_desc(dev, "MegaRAID logical drive"); return (0); } static int amrd_attach(device_t dev) { struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); device_t parent; debug_called(1); parent = device_get_parent(dev); sc->amrd_controller = (struct amr_softc *)device_get_softc(parent); sc->amrd_unit = device_get_unit(dev); sc->amrd_drive = device_get_ivars(dev); sc->amrd_dev = dev; device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE), sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK, amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state))); devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE, DEVSTAT_NO_ORDERED_TAGS, DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, DEVSTAT_PRIORITY_ARRAY); sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, 0, &amrd_cdevsw, &amrddisk_cdevsw); sc->amrd_dev_t->si_drv1 = sc; #ifdef FREEBSD_4 disks_registered++; #endif /* set maximum I/O size to match the maximum s/g size */ sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE; return (0); } static int amrd_detach(device_t dev) { struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); debug_called(1); if (sc->amrd_flags & AMRD_OPEN) return(EBUSY); devstat_remove_entry(&sc->amrd_stats); #ifdef FREEBSD_4 if (--disks_registered == 0) cdevsw_remove(&amrddisk_cdevsw); #else disk_destroy(sc->amrd_dev_t); #endif return(0); }