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2112695c03
freebsd-dev/sys/dev/mfi/mfi_disk.c
Doug Ambrisko 58ef3154a5 - Extend the prior commit to use the generic SCSI command building 
function use that for JBOD and Thunderbolt disk write command.  Now
  we only have one implementation in mfi.
- Fix dumping on Thunderbolt cards.  Polled IO commands do not seem to
  be normally acknowledged by changing cmd_status to MFI_STAT_OK.
  In order to get acknowledgement of the IO is complete, the Thunderbolt
  command queue needs to be run through.  I added a flag MFI_CMD_SCSI
  to indicate this command is being polled and to complete the
  Thunderbolt wrapper and indicate the result.  This flag needs to be
  set in the JBOD case in case if that us using Thunderbolt card.
  When in the polling loop check for completed commands.
- Remove mfi_tbolt_is_ldio and just do the check when needed.
- Fix an issue when attaching of disk device happens when a device is
  already scheduled to be attached but hasn't attached.
- add a tunable to allow raw disk attachment to CAM via:
        hw.mfi.allow_cam_disk_passthrough=1
- fixup aborting of commands (AEN and LD state change).  Use a generic
  abort function and only wait the command being aborted not both.
  Thunderbolt cards don't seem to abort commands so the abort times
  out.
2012-11-06 23:25:06 +00:00

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/*-
* 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("$FreeBSD$");
#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) {
bio->bio_resid = bio->bio_bcount;
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);
}
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