/*- * 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 1.5.2.5 2002/12/20 15:12:04 emoore Exp $ * $DragonFly: src/sys/dev/raid/amr/amr_disk.c,v 1.11 2006/07/28 02:17:37 dillon Exp $ */ /* * Disk driver for AMI MegaRaid controllers */ #include #include #include #include "amr_compat.h" #include #include #include #include #include #include #include #include #include #include "amrio.h" #include "amrreg.h" #include "amrvar.h" #include "amr_tables.h" /* 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; static d_dump_t amrd_dump; #define AMRD_CDEV_MAJOR 133 static struct dev_ops amrd_ops = { { "amrd", AMRD_CDEV_MAJOR, D_DISK }, .d_open = amrd_open, .d_close = amrd_close, .d_read = physread, .d_write = physwrite, .d_ioctl = amrd_ioctl, .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), { 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(struct dev_open_args *ap) { dev_t dev = ap->a_head.a_dev; struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1; #if defined(__DragonFly__) || __FreeBSD_version < 500000 /* old buf style */ struct disklabel *label; #endif debug_called(1); if (sc == NULL) return (ENXIO); /* controller not active? */ if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN) return(ENXIO); #if defined(__DragonFly__) || __FreeBSD_version < 500000 /* old buf style */ 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; #else sc->amrd_disk.d_sectorsize = AMR_BLKSIZE; sc->amrd_disk.d_mediasize = (off_t)sc->amrd_drive->al_size * AMR_BLKSIZE; sc->amrd_disk.d_fwsectors = sc->amrd_drive->al_sectors; sc->amrd_disk.d_fwheads = sc->amrd_drive->al_heads; #endif sc->amrd_flags |= AMRD_OPEN; return (0); } static int amrd_close(struct dev_close_args *ap) { dev_t dev = ap->a_head.a_dev; 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(struct dev_ioctl_args *ap) { return (ENOTTY); } /******************************************************************************** * System crashdump support */ int amrd_dump(struct dev_dump_args *ap) { dev_t dev = ap->a_head.a_dev; struct amrd_softc *amrd_sc = (struct amrd_softc *)dev->si_drv1; struct amr_softc *amr_sc; vm_paddr_t addr = 0; long blkcnt; int dumppages = MAXDUMPPGS; int error = 0; int driveno; int i; debug_called(1); amr_sc = (struct amr_softc *)amrd_sc->amrd_controller; if (!amrd_sc || !amr_sc) return(ENXIO); blkcnt = howmany(PAGE_SIZE, ap->a_secsize); driveno = amrd_sc->amrd_drive - amr_sc->amr_drive; while (ap->a_count > 0) { caddr_t va = NULL; if ((ap->a_count / blkcnt) < dumppages) dumppages = ap->a_count / blkcnt; for (i = 0; i < dumppages; ++i) { vm_paddr_t a = addr + (i * PAGE_SIZE); if (is_physical_memory(a)) va = pmap_kenter_temporary(trunc_page(a), i); else va = pmap_kenter_temporary(trunc_page(0), i); } if ((error = amr_dump_blocks(amr_sc, driveno, ap->a_blkno, (void *)va, (PAGE_SIZE * dumppages) / AMR_BLKSIZE)) != 0) return(error); if (dumpstatus(addr, (off_t)ap->a_count * DEV_BSIZE) < 0) return(EINTR); ap->a_blkno += blkcnt * dumppages; ap->a_count -= blkcnt * dumppages; addr += PAGE_SIZE * dumppages; } return (0); } /* * 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) { dev_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(struct bio *bio) { struct buf *bp = bio->bio_buf; debug_called(2); 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; 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_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; 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); disk_destroy(&sc->amrd_disk); return(0); }