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/*-
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Copyright 1994-2009 The FreeBSD Project.
* All rights reserved.
*
* 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 FREEBSD PROJECT``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 FREEBSD PROJECT 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.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies,either expressed or implied, of the FreeBSD Project.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#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_syspd_probe(device_t dev);
static int mfi_syspd_attach(device_t dev);
static int mfi_syspd_detach(device_t dev);
static disk_open_t mfi_syspd_open;
static disk_close_t mfi_syspd_close;
static disk_strategy_t mfi_syspd_strategy;
static dumper_t mfi_syspd_dump;
static devclass_t mfi_syspd_devclass;
static device_method_t mfi_syspd_methods[] = {
DEVMETHOD(device_probe, mfi_syspd_probe),
DEVMETHOD(device_attach, mfi_syspd_attach),
DEVMETHOD(device_detach, mfi_syspd_detach),
{ 0, 0 }
};
static driver_t mfi_syspd_driver = {
"mfisyspd",
mfi_syspd_methods,
sizeof(struct mfi_system_pd)
};
DRIVER_MODULE(mfisyspd, mfi, mfi_syspd_driver, mfi_syspd_devclass, 0, 0);
static int
mfi_syspd_probe(device_t dev)
{
return (0);
}
static int
mfi_syspd_attach(device_t dev)
{
struct mfi_system_pd *sc;
struct mfi_pd_info *pd_info;
struct mfi_system_pending *syspd_pend;
uint64_t sectors;
uint32_t secsize;
sc = device_get_softc(dev);
pd_info = device_get_ivars(dev);
sc->pd_dev = dev;
sc->pd_id = pd_info->ref.v.device_id;
sc->pd_unit = device_get_unit(dev);
sc->pd_info = pd_info;
sc->pd_controller = device_get_softc(device_get_parent(dev));
sc->pd_flags = 0;
sectors = pd_info->raw_size;
secsize = MFI_SECTOR_LEN;
mtx_lock(&sc->pd_controller->mfi_io_lock);
TAILQ_INSERT_TAIL(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link);
TAILQ_FOREACH(syspd_pend, &sc->pd_controller->mfi_syspd_pend_tqh,
pd_link) {
TAILQ_REMOVE(&sc->pd_controller->mfi_syspd_pend_tqh,
syspd_pend, pd_link);
free(syspd_pend, M_MFIBUF);
break;
}
mtx_unlock(&sc->pd_controller->mfi_io_lock);
device_printf(dev, "%juMB (%ju sectors) SYSPD volume (deviceid: %d)\n",
sectors / (1024 * 1024 / secsize), sectors, sc->pd_id);
sc->pd_disk = disk_alloc();
sc->pd_disk->d_drv1 = sc;
sc->pd_disk->d_maxsize = min(sc->pd_controller->mfi_max_io * secsize,
(sc->pd_controller->mfi_max_sge - 1) * PAGE_SIZE);
sc->pd_disk->d_name = "mfisyspd";
sc->pd_disk->d_open = mfi_syspd_open;
sc->pd_disk->d_close = mfi_syspd_close;
sc->pd_disk->d_strategy = mfi_syspd_strategy;
sc->pd_disk->d_dump = mfi_syspd_dump;
sc->pd_disk->d_unit = sc->pd_unit;
sc->pd_disk->d_sectorsize = secsize;
sc->pd_disk->d_mediasize = sectors * secsize;
if (sc->pd_disk->d_mediasize >= (1 * 1024 * 1024)) {
sc->pd_disk->d_fwheads = 255;
sc->pd_disk->d_fwsectors = 63;
} else {
sc->pd_disk->d_fwheads = 64;
sc->pd_disk->d_fwsectors = 32;
}
disk_create(sc->pd_disk, DISK_VERSION);
device_printf(dev, " SYSPD volume attached\n");
return (0);
}
static int
mfi_syspd_detach(device_t dev)
{
struct mfi_system_pd *sc;
sc = device_get_softc(dev);
device_printf(dev, "Detaching syspd\n");
mtx_lock(&sc->pd_controller->mfi_io_lock);
if (((sc->pd_disk->d_flags & DISKFLAG_OPEN) ||
(sc->pd_flags & MFI_DISK_FLAGS_OPEN)) &&
(sc->pd_controller->mfi_keep_deleted_volumes ||
sc->pd_controller->mfi_detaching)) {
mtx_unlock(&sc->pd_controller->mfi_io_lock);
device_printf(dev, "Cant detach syspd\n");
return (EBUSY);
}
mtx_unlock(&sc->pd_controller->mfi_io_lock);
disk_destroy(sc->pd_disk);
mtx_lock(&sc->pd_controller->mfi_io_lock);
TAILQ_REMOVE(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link);
mtx_unlock(&sc->pd_controller->mfi_io_lock);
free(sc->pd_info, M_MFIBUF);
return (0);
}
static int
mfi_syspd_open(struct disk *dp)
{
struct mfi_system_pd *sc;
int error;
sc = dp->d_drv1;
mtx_lock(&sc->pd_controller->mfi_io_lock);
if (sc->pd_flags & MFI_DISK_FLAGS_DISABLED)
error = ENXIO;
else {
sc->pd_flags |= MFI_DISK_FLAGS_OPEN;
error = 0;
}
mtx_unlock(&sc->pd_controller->mfi_io_lock);
return (error);
}
static int
mfi_syspd_close(struct disk *dp)
{
struct mfi_system_pd *sc;
sc = dp->d_drv1;
mtx_lock(&sc->pd_controller->mfi_io_lock);
sc->pd_flags &= ~MFI_DISK_FLAGS_OPEN;
mtx_unlock(&sc->pd_controller->mfi_io_lock);
return (0);
}
int
mfi_syspd_disable(struct mfi_system_pd *sc)
{
device_printf(sc->pd_dev, "syspd disable \n");
mtx_assert(&sc->pd_controller->mfi_io_lock, MA_OWNED);
if (sc->pd_flags & MFI_DISK_FLAGS_OPEN) {
if (sc->pd_controller->mfi_delete_busy_volumes)
return (0);
device_printf(sc->pd_dev,
"Unable to delete busy syspd device\n");
return (EBUSY);
}
sc->pd_flags |= MFI_DISK_FLAGS_DISABLED;
return (0);
}
void
mfi_syspd_enable(struct mfi_system_pd *sc)
{
device_printf(sc->pd_dev, "syspd enable \n");
mtx_assert(&sc->pd_controller->mfi_io_lock, MA_OWNED);
sc->pd_flags &= ~MFI_DISK_FLAGS_DISABLED;
}
static void
mfi_syspd_strategy(struct bio *bio)
{
struct mfi_system_pd *sc;
struct mfi_softc *controller;
sc = bio->bio_disk->d_drv1;
if (sc == NULL) {
bio->bio_error = EINVAL;
bio->bio_flags |= BIO_ERROR;
bio->bio_resid = bio->bio_bcount;
biodone(bio);
return;
}
controller = sc->pd_controller;
bio->bio_driver1 = (void *)(uintptr_t)sc->pd_id;
/* Mark it as system PD IO */
bio->bio_driver2 = (void *)MFI_SYS_PD_IO;
mtx_lock(&controller->mfi_io_lock);
mfi_enqueue_bio(controller, bio);
mfi_startio(controller);
mtx_unlock(&controller->mfi_io_lock);
return;
}
static int
mfi_syspd_dump(void *arg, void *virt, vm_offset_t phys, off_t offset,
size_t len)
{
struct mfi_system_pd *sc;
struct mfi_softc *parent_sc;
struct disk *dp;
int error;
dp = arg;
sc = dp->d_drv1;
parent_sc = sc->pd_controller;
if (len > 0) {
if ((error = mfi_dump_syspd_blocks(parent_sc,
sc->pd_id, offset / MFI_SECTOR_LEN, virt, len)) != 0)
return (error);
} else {
/* mfi_sync_cache(parent_sc, sc->ld_id); */
}
return (0);
}
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