| 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.orig |
/*-
* 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;
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);
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);
}