static void
cfi_disk_strategy(struct bio *bp)
{
struct cfi_disk_softc *sc = bp->bio_disk->d_drv1;
if (sc == NULL)
goto invalid;
if (bp->bio_bcount == 0) {
bp->bio_resid = bp->bio_bcount;
biodone(bp);
return;
}
switch (bp->bio_cmd) {
case BIO_READ:
case BIO_WRITE:
mtx_lock(&sc->qlock);
/* no value in sorting requests? */
bioq_insert_tail(&sc->bioq, bp);
mtx_unlock(&sc->qlock);
taskqueue_enqueue(sc->tq, &sc->iotask);
return;
}
/* fall thru... */
invalid:
bp->bio_flags |= BIO_ERROR;
bp->bio_error = EINVAL;
biodone(bp);
}
void
ida_submit_buf(struct ida_softc *ida, struct bio *bp)
{
mtx_lock(&ida->lock);
bioq_insert_tail(&ida->bio_queue, bp);
ida_startio(ida);
mtx_unlock(&ida->lock);
}
int
mfsstrategy(struct dev_strategy_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct bio *bio = ap->a_bio;
struct buf *bp = bio->bio_buf;
off_t boff = bio->bio_offset;
off_t eoff = boff + bp->b_bcount;
struct mfsnode *mfsp;
if ((mfsp = dev->si_drv1) == NULL) {
bp->b_error = ENXIO;
goto error;
}
if (boff < 0)
goto bad;
if (eoff > mfsp->mfs_size) {
if (boff > mfsp->mfs_size || (bp->b_flags & B_BNOCLIP))
goto bad;
/*
* Return EOF by completing the I/O with 0 bytes transfered.
* Set B_INVAL to indicate that any data in the buffer is not
* valid.
*/
if (boff == mfsp->mfs_size) {
bp->b_resid = bp->b_bcount;
bp->b_flags |= B_INVAL;
goto done;
}
bp->b_bcount = mfsp->mfs_size - boff;
}
/*
* Initiate I/O
*/
if (mfsp->mfs_td == curthread) {
mfs_doio(bio, mfsp);
} else {
bioq_insert_tail(&mfsp->bio_queue, bio);
wakeup((caddr_t)mfsp);
}
return(0);
/*
* Failure conditions on bio
*/
bad:
bp->b_error = EINVAL;
error:
bp->b_flags |= B_ERROR | B_INVAL;
done:
biodone(bio);
return(0);
}
static void ipsd_strategy(struct bio *iobuf)
{
ipsdisk_softc_t *dsc;
dsc = iobuf->bio_disk->d_drv1;
DEVICE_PRINTF(8,dsc->dev,"in strategy\n");
iobuf->bio_driver1 = (void *)(uintptr_t)dsc->sc->drives[dsc->disk_number].drivenum;
mtx_lock(&dsc->sc->queue_mtx);
bioq_insert_tail(&dsc->sc->queue, iobuf);
ips_start_io_request(dsc->sc);
mtx_unlock(&dsc->sc->queue_mtx);
}
static void
nvd_strategy(struct bio *bp)
{
struct nvd_disk *ndisk;
ndisk = (struct nvd_disk *)bp->bio_disk->d_drv1;
mtx_lock(&ndisk->bioqlock);
bioq_insert_tail(&ndisk->bioq, bp);
mtx_unlock(&ndisk->bioqlock);
taskqueue_enqueue(ndisk->tq, &ndisk->bioqtask);
}
/*
* Actually translate the requested transfer into one the physical driver
* can understand. The transfer is described by a buf and will include
* only one physical transfer.
*/
static int
ptstrategy(struct dev_strategy_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct bio *bio = ap->a_bio;
struct buf *bp = bio->bio_buf;
struct cam_periph *periph;
struct pt_softc *softc;
u_int unit;
unit = minor(dev);
periph = cam_extend_get(ptperiphs, unit);
if (periph == NULL) {
bp->b_error = ENXIO;
goto bad;
}
cam_periph_lock(periph);
softc = (struct pt_softc *)periph->softc;
/*
* If the device has been made invalid, error out
*/
if ((softc->flags & PT_FLAG_DEVICE_INVALID)) {
cam_periph_unlock(periph);
bp->b_error = ENXIO;
goto bad;
}
/*
* Place it in the queue of disk activities for this disk
*/
bioq_insert_tail(&softc->bio_queue, bio);
/*
* Schedule ourselves for performing the work.
*/
xpt_schedule(periph, /* XXX priority */1);
cam_periph_unlock(periph);
return(0);
bad:
bp->b_flags |= B_ERROR;
/*
* Correctly set the buf to indicate a completed xfer
*/
bp->b_resid = bp->b_bcount;
biodone(bio);
return(0);
}
/*
* Actually translate the requested transfer into one the physical driver
* can understand. The transfer is described by a buf and will include
* only one physical transfer.
*/
static void
ptstrategy(struct bio *bp)
{
struct cam_periph *periph;
struct pt_softc *softc;
int s;
periph = (struct cam_periph *)bp->bio_dev->si_drv1;
bp->bio_resid = bp->bio_bcount;
if (periph == NULL) {
biofinish(bp, NULL, ENXIO);
return;
}
softc = (struct pt_softc *)periph->softc;
/*
* Mask interrupts so that the pack cannot be invalidated until
* after we are in the queue. Otherwise, we might not properly
* clean up one of the buffers.
*/
s = splbio();
/*
* If the device has been made invalid, error out
*/
if ((softc->flags & PT_FLAG_DEVICE_INVALID)) {
splx(s);
biofinish(bp, NULL, ENXIO);
return;
}
/*
* Place it in the queue of disk activities for this disk
*/
bioq_insert_tail(&softc->bio_queue, bp);
splx(s);
/*
* Schedule ourselves for performing the work.
*/
xpt_schedule(periph, /* XXX priority */1);
return;
}
static void
nand_strategy(struct bio *bp)
{
struct nand_chip *chip;
chip = (struct nand_chip *)bp->bio_disk->d_drv1;
bp->bio_driver1 = BIO_NAND_STD;
nand_debug(NDBG_GEOM, "Strategy %s on chip %d [%p]",
bp->bio_cmd == BIO_READ ? "READ" :
(bp->bio_cmd == BIO_WRITE ? "WRITE" :
(bp->bio_cmd == BIO_DELETE ? "DELETE" : "UNKNOWN")),
chip->num, chip);
mtx_lock(&chip->qlock);
bioq_insert_tail(&chip->bioq, bp);
mtx_unlock(&chip->qlock);
taskqueue_enqueue(chip->tq, &chip->iotask);
}
static void
nand_strategy_raw(struct bio *bp)
{
struct nand_chip *chip;
chip = (struct nand_chip *)bp->bio_disk->d_drv1;
/* Inform taskqueue that it's a raw access */
bp->bio_driver1 = BIO_NAND_RAW;
nand_debug(NDBG_GEOM, "Strategy %s on chip %d [%p]",
(bp->bio_cmd & BIO_READ) == BIO_READ ? "READ" :
((bp->bio_cmd & BIO_WRITE) == BIO_WRITE ? "WRITE" :
((bp->bio_cmd & BIO_DELETE) == BIO_DELETE ? "DELETE" : "UNKNOWN")),
chip->num, chip);
mtx_lock(&chip->qlock);
bioq_insert_tail(&chip->bioq, bp);
mtx_unlock(&chip->qlock);
taskqueue_enqueue(chip->tq, &chip->iotask);
}
/*
* The function is called to read encrypted data.
*
* g_eli_start -> G_ELI_CRYPTO_READ -> g_io_request -> g_eli_read_done -> g_eli_crypto_run -> g_eli_crypto_read_done -> g_io_deliver
*/
void
g_eli_crypto_read(struct g_eli_softc *sc, struct bio *bp, boolean_t fromworker)
{
struct g_consumer *cp;
struct bio *cbp;
if (!fromworker) {
/*
* We are not called from the worker thread, so check if
* device is suspended.
*/
mtx_lock(&sc->sc_queue_mtx);
if (sc->sc_flags & G_ELI_FLAG_SUSPEND) {
/*
* If device is suspended, we place the request onto
* the queue, so it can be handled after resume.
*/
G_ELI_DEBUG(0, "device suspended, move onto queue");
bioq_insert_tail(&sc->sc_queue, bp);
mtx_unlock(&sc->sc_queue_mtx);
wakeup(sc);
return;
}
atomic_add_int(&sc->sc_inflight, 1);
mtx_unlock(&sc->sc_queue_mtx);
}
bp->bio_pflags = 0;
bp->bio_driver2 = NULL;
cbp = bp->bio_driver1;
cbp->bio_done = g_eli_read_done;
cp = LIST_FIRST(&sc->sc_geom->consumer);
cbp->bio_to = cp->provider;
G_ELI_LOGREQ(2, cbp, "Sending request.");
/*
* Read encrypted data from provider.
*/
g_io_request(cbp, cp);
}
/*
* Actually translate the requested transfer into one the physical driver
* can understand. The transfer is described by a buf and will include
* only one physical transfer.
*/
static void
ptstrategy(struct bio *bp)
{
struct cam_periph *periph;
struct pt_softc *softc;
periph = (struct cam_periph *)bp->bio_dev->si_drv1;
bp->bio_resid = bp->bio_bcount;
if (periph == NULL) {
biofinish(bp, NULL, ENXIO);
return;
}
cam_periph_lock(periph);
softc = (struct pt_softc *)periph->softc;
/*
* If the device has been made invalid, error out
*/
if ((softc->flags & PT_FLAG_DEVICE_INVALID)) {
cam_periph_unlock(periph);
biofinish(bp, NULL, ENXIO);
return;
}
/*
* Place it in the queue of disk activities for this disk
*/
bioq_insert_tail(&softc->bio_queue, bp);
/*
* Schedule ourselves for performing the work.
*/
xpt_schedule(periph, /* XXX priority */1);
cam_periph_unlock(periph);
return;
}
/*
* Seek sort for disks.
*
* Sort all requests in a single queue while keeping
* track of the current position of the disk with last_offset.
* See above for details.
*/
void
bioq_disksort(struct bio_queue_head *head, struct bio *bp)
{
struct bio *cur, *prev;
uoff_t key;
if ((bp->bio_flags & BIO_ORDERED) != 0) {
/*
* Ordered transactions can only be dispatched
* after any currently queued transactions. They
* also have barrier semantics - no transactions
* queued in the future can pass them.
*/
bioq_insert_tail(head, bp);
return;
}
prev = NULL;
key = bioq_bio_key(head, bp);
cur = TAILQ_FIRST(&head->queue);
if (head->insert_point) {
prev = head->insert_point;
cur = TAILQ_NEXT(head->insert_point, bio_queue);
}
while (cur != NULL && key >= bioq_bio_key(head, cur)) {
prev = cur;
cur = TAILQ_NEXT(cur, bio_queue);
}
if (prev == NULL)
TAILQ_INSERT_HEAD(&head->queue, bp, bio_queue);
else
TAILQ_INSERT_AFTER(&head->queue, prev, bp, bio_queue);
}
static void
nvd_strategy(struct bio *bp)
{
struct nvd_disk *ndisk;
ndisk = (struct nvd_disk *)bp->bio_disk->d_drv1;
if (__predict_false(bp->bio_flags & BIO_ORDERED))
atomic_add_int(&ndisk->ordered_in_flight, 1);
if (__predict_true(ndisk->ordered_in_flight == 0)) {
nvd_bio_submit(ndisk, bp);
return;
}
/*
* There are ordered bios in flight, so we need to submit
* bios through the task queue to enforce ordering.
*/
mtx_lock(&ndisk->bioqlock);
bioq_insert_tail(&ndisk->bioq, bp);
mtx_unlock(&ndisk->bioqlock);
taskqueue_enqueue(ndisk->tq, &ndisk->bioqtask);
}
