Current Path : /sys/dev/mfi/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/dev/mfi/mfi_disk.c |
/*- * Copyright (c) 2006 IronPort Systems * 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. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/dev/mfi/mfi_disk.c 236719 2012-06-07 18:44:06Z sbruno $"); #include "opt_mfi.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/selinfo.h> #include <sys/module.h> #include <sys/malloc.h> #include <sys/sysctl.h> #include <sys/uio.h> #include <sys/bio.h> #include <sys/bus.h> #include <sys/conf.h> #include <sys/disk.h> #include <geom/geom_disk.h> #include <vm/vm.h> #include <vm/pmap.h> #include <machine/md_var.h> #include <machine/bus.h> #include <sys/rman.h> #include <dev/mfi/mfireg.h> #include <dev/mfi/mfi_ioctl.h> #include <dev/mfi/mfivar.h> static int mfi_disk_probe(device_t dev); static int mfi_disk_attach(device_t dev); static int mfi_disk_detach(device_t dev); static disk_open_t mfi_disk_open; static disk_close_t mfi_disk_close; static disk_strategy_t mfi_disk_strategy; static dumper_t mfi_disk_dump; static devclass_t mfi_disk_devclass; static device_method_t mfi_disk_methods[] = { DEVMETHOD(device_probe, mfi_disk_probe), DEVMETHOD(device_attach, mfi_disk_attach), DEVMETHOD(device_detach, mfi_disk_detach), { 0, 0 } }; static driver_t mfi_disk_driver = { "mfid", mfi_disk_methods, sizeof(struct mfi_disk) }; DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0); static int mfi_disk_probe(device_t dev) { return (0); } static int mfi_disk_attach(device_t dev) { struct mfi_disk *sc; struct mfi_ld_info *ld_info; struct mfi_disk_pending *ld_pend; uint64_t sectors; uint32_t secsize; char *state; sc = device_get_softc(dev); ld_info = device_get_ivars(dev); sc->ld_dev = dev; sc->ld_id = ld_info->ld_config.properties.ld.v.target_id; sc->ld_unit = device_get_unit(dev); sc->ld_info = ld_info; sc->ld_controller = device_get_softc(device_get_parent(dev)); sc->ld_flags = 0; sectors = ld_info->size; secsize = MFI_SECTOR_LEN; mtx_lock(&sc->ld_controller->mfi_io_lock); TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, sc, ld_link); TAILQ_FOREACH(ld_pend, &sc->ld_controller->mfi_ld_pend_tqh, ld_link) { TAILQ_REMOVE(&sc->ld_controller->mfi_ld_pend_tqh, ld_pend, ld_link); free(ld_pend, M_MFIBUF); break; } mtx_unlock(&sc->ld_controller->mfi_io_lock); switch (ld_info->ld_config.params.state) { case MFI_LD_STATE_OFFLINE: state = "offline"; break; case MFI_LD_STATE_PARTIALLY_DEGRADED: state = "partially degraded"; break; case MFI_LD_STATE_DEGRADED: state = "degraded"; break; case MFI_LD_STATE_OPTIMAL: state = "optimal"; break; default: state = "unknown"; break; } if ( strlen(ld_info->ld_config.properties.name) == 0 ) { device_printf(dev, "%juMB (%ju sectors) RAID volume (no label) is %s\n", sectors / (1024 * 1024 / secsize), sectors, state); } else { device_printf(dev, "%juMB (%ju sectors) RAID volume '%s' is %s\n", sectors / (1024 * 1024 / secsize), sectors, ld_info->ld_config.properties.name, state); } sc->ld_disk = disk_alloc(); sc->ld_disk->d_drv1 = sc; sc->ld_disk->d_maxsize = min(sc->ld_controller->mfi_max_io * secsize, (sc->ld_controller->mfi_max_sge - 1) * PAGE_SIZE); sc->ld_disk->d_name = "mfid"; sc->ld_disk->d_open = mfi_disk_open; sc->ld_disk->d_close = mfi_disk_close; sc->ld_disk->d_strategy = mfi_disk_strategy; sc->ld_disk->d_dump = mfi_disk_dump; sc->ld_disk->d_unit = sc->ld_unit; sc->ld_disk->d_sectorsize = secsize; sc->ld_disk->d_mediasize = sectors * secsize; if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) { sc->ld_disk->d_fwheads = 255; sc->ld_disk->d_fwsectors = 63; } else { sc->ld_disk->d_fwheads = 64; sc->ld_disk->d_fwsectors = 32; } disk_create(sc->ld_disk, DISK_VERSION); return (0); } static int mfi_disk_detach(device_t dev) { struct mfi_disk *sc; sc = device_get_softc(dev); mtx_lock(&sc->ld_controller->mfi_io_lock); if (((sc->ld_disk->d_flags & DISKFLAG_OPEN) || (sc->ld_flags & MFI_DISK_FLAGS_OPEN)) && (sc->ld_controller->mfi_keep_deleted_volumes || sc->ld_controller->mfi_detaching)) { mtx_unlock(&sc->ld_controller->mfi_io_lock); return (EBUSY); } mtx_unlock(&sc->ld_controller->mfi_io_lock); disk_destroy(sc->ld_disk); mtx_lock(&sc->ld_controller->mfi_io_lock); TAILQ_REMOVE(&sc->ld_controller->mfi_ld_tqh, sc, ld_link); mtx_unlock(&sc->ld_controller->mfi_io_lock); free(sc->ld_info, M_MFIBUF); return (0); } static int mfi_disk_open(struct disk *dp) { struct mfi_disk *sc; int error; sc = dp->d_drv1; mtx_lock(&sc->ld_controller->mfi_io_lock); if (sc->ld_flags & MFI_DISK_FLAGS_DISABLED) error = ENXIO; else { sc->ld_flags |= MFI_DISK_FLAGS_OPEN; error = 0; } mtx_unlock(&sc->ld_controller->mfi_io_lock); return (error); } static int mfi_disk_close(struct disk *dp) { struct mfi_disk *sc; sc = dp->d_drv1; mtx_lock(&sc->ld_controller->mfi_io_lock); sc->ld_flags &= ~MFI_DISK_FLAGS_OPEN; mtx_unlock(&sc->ld_controller->mfi_io_lock); return (0); } int mfi_disk_disable(struct mfi_disk *sc) { mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED); if (sc->ld_flags & MFI_DISK_FLAGS_OPEN) { if (sc->ld_controller->mfi_delete_busy_volumes) return (0); device_printf(sc->ld_dev, "Unable to delete busy ld device\n"); return (EBUSY); } sc->ld_flags |= MFI_DISK_FLAGS_DISABLED; return (0); } void mfi_disk_enable(struct mfi_disk *sc) { mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED); sc->ld_flags &= ~MFI_DISK_FLAGS_DISABLED; } static void mfi_disk_strategy(struct bio *bio) { struct mfi_disk *sc; struct mfi_softc *controller; sc = bio->bio_disk->d_drv1; controller = sc->ld_controller; if (sc == NULL) { bio->bio_error = EINVAL; bio->bio_flags |= BIO_ERROR; bio->bio_resid = bio->bio_bcount; biodone(bio); return; } if (controller->adpreset) { bio->bio_error = EBUSY; return; } if (controller->hw_crit_error) { bio->bio_error = EBUSY; return; } if (controller->issuepend_done == 0) { bio->bio_error = EBUSY; return; } bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id; /* Mark it as LD IO */ bio->bio_driver2 = (void *)MFI_LD_IO; mtx_lock(&controller->mfi_io_lock); mfi_enqueue_bio(controller, bio); mfi_startio(controller); mtx_unlock(&controller->mfi_io_lock); return; } void mfi_disk_complete(struct bio *bio) { struct mfi_disk *sc; struct mfi_frame_header *hdr; sc = bio->bio_disk->d_drv1; hdr = bio->bio_driver1; if (bio->bio_flags & BIO_ERROR) { if (bio->bio_error == 0) bio->bio_error = EIO; disk_err(bio, "hard error", -1, 1); } else { bio->bio_resid = 0; } biodone(bio); } static int mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len) { struct mfi_disk *sc; struct mfi_softc *parent_sc; struct disk *dp; int error; dp = arg; sc = dp->d_drv1; parent_sc = sc->ld_controller; if (len > 0) { if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset / MFI_SECTOR_LEN, virt, len)) != 0) return (error); } else { /* mfi_sync_cache(parent_sc, sc->ld_id); */ } return (0); }