266 lines
6.3 KiB
C
266 lines
6.3 KiB
C
/*-
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* Copyright (c) 2006 IronPort Systems
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_mfi.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/selinfo.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/uio.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/disk.h>
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#include <geom/geom_disk.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/md_var.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <dev/mfi/mfireg.h>
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#include <dev/mfi/mfi_ioctl.h>
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#include <dev/mfi/mfivar.h>
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static int mfi_disk_probe(device_t dev);
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static int mfi_disk_attach(device_t dev);
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static int mfi_disk_detach(device_t dev);
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static disk_open_t mfi_disk_open;
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static disk_close_t mfi_disk_close;
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static disk_strategy_t mfi_disk_strategy;
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static dumper_t mfi_disk_dump;
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static devclass_t mfi_disk_devclass;
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static device_method_t mfi_disk_methods[] = {
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DEVMETHOD(device_probe, mfi_disk_probe),
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DEVMETHOD(device_attach, mfi_disk_attach),
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DEVMETHOD(device_detach, mfi_disk_detach),
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{ 0, 0 }
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};
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static driver_t mfi_disk_driver = {
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"mfid",
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mfi_disk_methods,
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sizeof(struct mfi_disk)
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};
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DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0);
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static int
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mfi_disk_probe(device_t dev)
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{
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return (0);
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}
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static int
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mfi_disk_attach(device_t dev)
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{
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struct mfi_disk *sc;
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struct mfi_ld_info *ld_info;
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uint64_t sectors;
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uint32_t secsize;
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char *state;
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sc = device_get_softc(dev);
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ld_info = device_get_ivars(dev);
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sc->ld_dev = dev;
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sc->ld_id = ld_info->ld_config.properties.ld.v.target_id;
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sc->ld_unit = device_get_unit(dev);
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sc->ld_info = ld_info;
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sc->ld_controller = device_get_softc(device_get_parent(dev));
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sc->ld_flags = 0;
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sectors = ld_info->size;
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secsize = MFI_SECTOR_LEN;
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TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, sc, ld_link);
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switch (ld_info->ld_config.params.state) {
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case MFI_LD_STATE_OFFLINE:
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state = "offline";
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break;
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case MFI_LD_STATE_PARTIALLY_DEGRADED:
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state = "partially degraded";
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break;
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case MFI_LD_STATE_DEGRADED:
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state = "degraded";
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break;
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case MFI_LD_STATE_OPTIMAL:
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state = "optimal";
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break;
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default:
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state = "unknown";
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break;
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}
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device_printf(dev, "%juMB (%ju sectors) RAID volume '%s' is %s\n",
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sectors / (1024 * 1024 / secsize), sectors,
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ld_info->ld_config.properties.name,
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state);
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sc->ld_disk = disk_alloc();
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sc->ld_disk->d_drv1 = sc;
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sc->ld_disk->d_maxsize = sc->ld_controller->mfi_max_io * secsize;
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sc->ld_disk->d_name = "mfid";
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sc->ld_disk->d_open = mfi_disk_open;
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sc->ld_disk->d_close = mfi_disk_close;
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sc->ld_disk->d_strategy = mfi_disk_strategy;
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sc->ld_disk->d_dump = mfi_disk_dump;
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sc->ld_disk->d_unit = sc->ld_unit;
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sc->ld_disk->d_sectorsize = secsize;
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sc->ld_disk->d_mediasize = sectors * secsize;
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if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) {
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sc->ld_disk->d_fwheads = 255;
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sc->ld_disk->d_fwsectors = 63;
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} else {
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sc->ld_disk->d_fwheads = 64;
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sc->ld_disk->d_fwsectors = 32;
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}
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disk_create(sc->ld_disk, DISK_VERSION);
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return (0);
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}
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static int
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mfi_disk_detach(device_t dev)
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{
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struct mfi_disk *sc;
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sc = device_get_softc(dev);
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if ((sc->ld_disk->d_flags & DISKFLAG_OPEN) ||
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(sc->ld_flags & MFI_DISK_FLAGS_OPEN))
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return (EBUSY);
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free(sc->ld_info, M_MFIBUF);
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disk_destroy(sc->ld_disk);
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return (0);
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}
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static int
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mfi_disk_open(struct disk *dp)
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{
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struct mfi_disk *sc;
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sc = dp->d_drv1;
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mtx_lock(&sc->ld_controller->mfi_io_lock);
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sc->ld_flags |= MFI_DISK_FLAGS_OPEN;
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mtx_unlock(&sc->ld_controller->mfi_io_lock);
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return (0);
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}
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static int
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mfi_disk_close(struct disk *dp)
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{
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struct mfi_disk *sc;
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sc = dp->d_drv1;
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mtx_lock(&sc->ld_controller->mfi_io_lock);
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sc->ld_flags &= ~MFI_DISK_FLAGS_OPEN;
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mtx_unlock(&sc->ld_controller->mfi_io_lock);
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return (0);
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}
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static void
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mfi_disk_strategy(struct bio *bio)
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{
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struct mfi_disk *sc;
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struct mfi_softc *controller;
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sc = bio->bio_disk->d_drv1;
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if (sc == NULL) {
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bio->bio_error = EINVAL;
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bio->bio_flags |= BIO_ERROR;
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bio->bio_resid = bio->bio_bcount;
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biodone(bio);
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return;
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}
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controller = sc->ld_controller;
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bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id;
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mtx_lock(&controller->mfi_io_lock);
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mfi_enqueue_bio(controller, bio);
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mfi_startio(controller);
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mtx_unlock(&controller->mfi_io_lock);
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return;
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}
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void
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mfi_disk_complete(struct bio *bio)
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{
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struct mfi_disk *sc;
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struct mfi_frame_header *hdr;
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sc = bio->bio_disk->d_drv1;
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hdr = bio->bio_driver1;
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if (bio->bio_flags & BIO_ERROR) {
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if (bio->bio_error == 0)
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bio->bio_error = EIO;
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disk_err(bio, "hard error", -1, 1);
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} else {
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bio->bio_resid = 0;
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}
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biodone(bio);
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}
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static int
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mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len)
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{
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struct mfi_disk *sc;
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struct mfi_softc *parent_sc;
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struct disk *dp;
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int error;
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dp = arg;
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sc = dp->d_drv1;
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parent_sc = sc->ld_controller;
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if (len > 0) {
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if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset /
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MFI_SECTOR_LEN, virt, len)) != 0)
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return (error);
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} else {
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/* mfi_sync_cache(parent_sc, sc->ld_id); */
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}
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return (0);
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}
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