diff options
Diffstat (limited to 'sys/dev/twe/twe_disk.c')
| -rw-r--r-- | sys/dev/twe/twe_disk.c | 289 |
1 files changed, 0 insertions, 289 deletions
diff --git a/sys/dev/twe/twe_disk.c b/sys/dev/twe/twe_disk.c deleted file mode 100644 index bb8fba1..0000000 --- a/sys/dev/twe/twe_disk.c +++ /dev/null @@ -1,289 +0,0 @@ -/*- - * Copyright (c) 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. - * - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/kernel.h> - -#if __FreeBSD_version < 500000 -# include <dev/twe/twe_compat.h> -#else -# include <sys/bio.h> -#endif -#include <sys/bus.h> -#include <sys/conf.h> -#include <sys/devicestat.h> -#include <sys/disk.h> - -#include <machine/bus.h> -#include <sys/rman.h> - -#include <dev/twe/twereg.h> -#include <dev/twe/twevar.h> - -/* - * Interface to controller. - */ -static int twed_probe(device_t dev); -static int twed_attach(device_t dev); -static int twed_detach(device_t dev); - -/* - * Interface to the device switch - */ -static d_open_t twed_open; -static d_close_t twed_close; -static d_strategy_t twed_strategy; - -#define TWED_CDEV_MAJOR 147 - -static struct cdevsw twed_cdevsw = { - /* open */ twed_open, - /* close */ twed_close, - /* read */ physread, - /* write */ physwrite, - /* ioctl */ noioctl, - /* poll */ nopoll, - /* mmap */ nommap, - /* strategy */ twed_strategy, - /* name */ "twed", - /* maj */ TWED_CDEV_MAJOR, - /* dump */ nodump, - /* psize */ nopsize, - /* flags */ D_DISK, - /* bmaj */ -1 -}; - -devclass_t twed_devclass; -static struct cdevsw tweddisk_cdevsw; -#ifdef FREEBSD_4 -static int disks_registered = 0; -#endif - -static device_method_t twed_methods[] = { - DEVMETHOD(device_probe, twed_probe), - DEVMETHOD(device_attach, twed_attach), - DEVMETHOD(device_detach, twed_detach), - { 0, 0 } -}; - -static driver_t twed_driver = { - "twed", - twed_methods, - sizeof(struct twed_softc) -}; - -DRIVER_MODULE(twed, twe, twed_driver, twed_devclass, 0, 0); - -/******************************************************************************** - * Handle open from generic layer. - * - * Note that this is typically only called by the diskslice code, and not - * for opens on subdevices (eg. slices, partitions). - */ -static int -twed_open(dev_t dev, int flags, int fmt, struct proc *p) -{ - struct twed_softc *sc = (struct twed_softc *)dev->si_drv1; - struct disklabel *label; - - debug_called(4); - - if (sc == NULL) - return (ENXIO); - - /* check that the controller is up and running */ - if (sc->twed_controller->twe_state & TWE_STATE_SHUTDOWN) - return(ENXIO); - - /* build synthetic label */ - label = &sc->twed_disk.d_label; - bzero(label, sizeof(*label)); - label->d_type = DTYPE_ESDI; - label->d_secsize = TWE_BLOCK_SIZE; - label->d_nsectors = sc->twed_drive->td_sectors; - label->d_ntracks = sc->twed_drive->td_heads; - label->d_ncylinders = sc->twed_drive->td_cylinders; - label->d_secpercyl = sc->twed_drive->td_sectors * sc->twed_drive->td_heads; - label->d_secperunit = sc->twed_drive->td_size; - - sc->twed_flags |= TWED_OPEN; - return (0); -} - -/******************************************************************************** - * Handle last close of the disk device. - */ -static int -twed_close(dev_t dev, int flags, int fmt, struct proc *p) -{ - struct twed_softc *sc = (struct twed_softc *)dev->si_drv1; - - debug_called(4); - - if (sc == NULL) - return (ENXIO); - - sc->twed_flags &= ~TWED_OPEN; - return (0); -} - -/******************************************************************************** - * Handle an I/O request. - */ -static void -twed_strategy(struct bio *bp) -{ - struct twed_softc *sc = (struct twed_softc *)bp->bio_dev->si_drv1; - - debug_called(4); - - /* bogus disk? */ - if (sc == NULL) { - bp->bio_flags |= BIO_ERROR; - bp->bio_error = EINVAL; - return; - } - - /* do-nothing operation? */ - if (bp->bio_bcount == 0) { - bp->bio_resid = bp->bio_bcount; - biodone(bp); - return; - } - - /* perform accounting */ - devstat_start_transaction(&sc->twed_stats); - - /* pass the bio to the controller - it can work out who we are */ - twe_submit_buf(sc->twed_controller, bp); - return; -} - -/******************************************************************************** - * Handle completion of an I/O request. - */ -void -twed_intr(void *data) -{ - struct bio *bp = (struct bio *)data; - struct twed_softc *sc = (struct twed_softc *)bp->bio_dev->si_drv1; - - debug_called(4); - - /* check for error from controller code */ - if (bp->bio_flags & BIO_ERROR) { - bp->bio_error = EIO; - } else { - bp->bio_resid = 0; - } - - devstat_end_transaction_bio(&sc->twed_stats, bp); - biodone(bp); -} - -/******************************************************************************** - * Stub to provide device identification when probed. - */ -static int -twed_probe(device_t dev) -{ - - debug_called(4); - - device_set_desc(dev, "3ware RAID unit"); - return (0); -} - -/******************************************************************************** - * Attach a unit to the controller. - */ -static int -twed_attach(device_t dev) -{ - struct twed_softc *sc = (struct twed_softc *)device_get_softc(dev); - device_t parent; - dev_t dsk; - - debug_called(4); - - /* initialise our softc */ - parent = device_get_parent(dev); - sc->twed_controller = (struct twe_softc *)device_get_softc(parent); - sc->twed_drive = device_get_ivars(dev); - sc->twed_dev = dev; - - /* report the drive */ - device_printf(dev, "%uMB (%u sectors)\n", - sc->twed_drive->td_size / ((1024 * 1024) / TWE_BLOCK_SIZE), - sc->twed_drive->td_size); - - devstat_add_entry(&sc->twed_stats, "twed", device_get_unit(dev), TWE_BLOCK_SIZE, - DEVSTAT_NO_ORDERED_TAGS, - DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, - DEVSTAT_PRIORITY_ARRAY); - - /* attach a generic disk device to ourselves */ - dsk = disk_create(device_get_unit(dev), &sc->twed_disk, 0, &twed_cdevsw, &tweddisk_cdevsw); - dsk->si_drv1 = sc; - sc->twed_dev_t = dsk; -#ifdef FREEBSD_4 - disks_registered++; -#endif - - /* set the maximum I/O size to the theoretical maximum allowed by the S/G list size */ - dsk->si_iosize_max = (TWE_MAX_SGL_LENGTH - 1) * PAGE_SIZE; - - return (0); -} - -/******************************************************************************** - * Disconnect ourselves from the system. - */ -static int -twed_detach(device_t dev) -{ - struct twed_softc *sc = (struct twed_softc *)device_get_softc(dev); - - debug_called(4); - - if (sc->twed_flags & TWED_OPEN) - return(EBUSY); - - devstat_remove_entry(&sc->twed_stats); -#ifdef FREEBSD_4 - if (--disks_registered == 0) - cdevsw_remove(&tweddisk_cdevsw); -#else - disk_destroy(sc->twed_dev_t); -#endif - - return(0); -} - |
