/*- * 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. */ /*- * Copyright (c) 2002 Eric Moore * Copyright (c) 2002 LSI Logic Corporation * 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. * 3. The party using or redistributing the source code and binary forms * agrees to the disclaimer below and the terms and conditions set forth * herein. * * 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: src/sys/dev/amr/amr_disk.c,v 1.39 2006/10/31 21:19:25 pjd Exp $ */ /* * Disk driver for AMI MegaRaid controllers */ #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_strategy_t amrd_strategy; static d_dump_t amrd_dump; static struct dev_ops amrd_ops = { { "amrd", 0, D_DISK }, .d_open = amrd_open, .d_strategy = amrd_strategy, .d_dump = amrd_dump, }; static devclass_t amrd_devclass; static device_method_t amrd_methods[] = { DEVMETHOD(device_probe, amrd_probe), DEVMETHOD(device_attach, amrd_attach), DEVMETHOD(device_detach, amrd_detach), DEVMETHOD_END }; static driver_t amrd_driver = { "amrd", amrd_methods, sizeof(struct amrd_softc) }; DRIVER_MODULE_ORDERED(amrd, amr, amrd_driver, amrd_devclass, NULL, NULL, SI_ORDER_THIRD); static int amrd_open(struct dev_open_args *ap) { struct amrd_softc *sc = ap->a_head.a_dev->si_drv1; debug_called(1); if (sc == NULL) return (ENXIO); /* controller not active? */ if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) return(ENXIO); return (0); } /******************************************************************************** * System crashdump support */ static int amrd_dump(struct dev_dump_args *ap) { cdev_t dev = ap->a_head.a_dev; off_t offset = ap->a_offset; void *virtual = ap->a_virtual; size_t length = ap->a_length; struct amrd_softc *amrd_sc; struct amr_softc *amr_sc; int error = 0; amrd_sc = (struct amrd_softc *)dev->si_drv1; if (amrd_sc == NULL) return(ENXIO); amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; if (length > 0) { int driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; error = amr_dump_blocks(amr_sc, driveno, offset / AMR_BLKSIZE, virtual, (int)length / AMR_BLKSIZE); } return(error); } /* * 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 int amrd_strategy(struct dev_strategy_args *ap) { cdev_t dev = ap->a_head.a_dev; struct bio *bio = ap->a_bio; struct buf *bp = bio->bio_buf; struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; /* bogus disk? */ if (sc == NULL) { bp->b_error = EINVAL; goto bad; } bio->bio_driver_info = sc; devstat_start_transaction(&sc->amrd_stats); amr_submit_bio(sc->amrd_controller, bio); return (0); bad: bp->b_flags |= B_ERROR; /* * Correctly set the buf to indicate a completed transfer */ bp->b_resid = bp->b_bcount; biodone(bio); return (0); } void amrd_intr(void *data) { struct bio *bio = (struct bio *)data; struct buf *bp = bio->bio_buf; struct amrd_softc *sc = (struct amrd_softc *)bio->bio_driver_info; debug_called(2); devstat_end_transaction_buf(&sc->amrd_stats, bp); if (bp->b_flags & B_ERROR) { bp->b_error = EIO; debug(1, "i/o error\n"); } else { bp->b_resid = 0; } biodone(bio); } static int amrd_probe(device_t dev) { debug_called(1); device_set_desc(dev, "LSILogic 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; struct disk_info info; 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, &amrd_ops); sc->amrd_dev_t->si_drv1 = sc; /* set maximum I/O size to match the maximum s/g size */ sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE; /* * Set disk info, as it appears that all needed data is available already. * Setting the disk info will also cause the probing to start. */ bzero(&info, sizeof(info)); info.d_media_blksize = AMR_BLKSIZE; /* optional */ info.d_media_blocks = sc->amrd_drive->al_size; info.d_type = DTYPE_SCSI; /* mandatory */ info.d_secpertrack = sc->amrd_drive->al_sectors; info.d_nheads = sc->amrd_drive->al_heads; info.d_ncylinders = sc->amrd_drive->al_cylinders; info.d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads; disk_setdiskinfo(&sc->amrd_disk, &info); return (0); } static int amrd_detach(device_t dev) { struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev); debug_called(1); #if 0 /* XXX swildner */ if (sc->amrd_disk->d_flags & DISKFLAG_OPEN) return(EBUSY); #endif devstat_remove_entry(&sc->amrd_stats); disk_destroy(&sc->amrd_disk); return(0); }