void
cam_extend_release(struct extend_array *ea, int index)
{
void *p = cam_extend_get(ea, index);
if (p) {
ea->ps[index] = 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 buf *bp)
{
struct cam_periph *periph;
struct pt_softc *softc;
u_int unit;
int s;
unit = minor(bp->b_dev);
periph = cam_extend_get(ptperiphs, unit);
if (periph == NULL) {
bp->b_error = ENXIO;
goto bad;
}
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);
bp->b_error = ENXIO;
goto bad;
}
/*
* Place it in the queue of disk activities for this disk
*/
bufq_insert_tail(&softc->buf_queue, bp);
splx(s);
/*
* Schedule ourselves for performing the work.
*/
xpt_schedule(periph, /* XXX priority */1);
return;
bad:
bp->b_flags |= B_ERROR;
/*
* Correctly set the buf to indicate a completed xfer
*/
bp->b_resid = bp->b_bcount;
biodone(bp);
}
static int
ptioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
{
struct cam_periph *periph;
struct pt_softc *softc;
int unit;
int error;
unit = minor(dev);
periph = cam_extend_get(ptperiphs, unit);
if (periph == NULL)
return(ENXIO);
softc = (struct pt_softc *)periph->softc;
if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
return (error); /* error code from tsleep */
}
switch(cmd) {
case PTIOCGETTIMEOUT:
if (softc->io_timeout >= 1000)
*(int *)addr = softc->io_timeout / 1000;
else
*(int *)addr = 0;
break;
case PTIOCSETTIMEOUT:
{
int s;
if (*(int *)addr < 1) {
error = EINVAL;
break;
}
s = splsoftcam();
softc->io_timeout = *(int *)addr * 1000;
splx(s);
break;
}
default:
error = cam_periph_ioctl(periph, cmd, addr, pterror);
break;
}
cam_periph_unlock(periph);
return(error);
}
/*
* 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);
}
static int
ptioctl(struct dev_ioctl_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
caddr_t addr = ap->a_data;
struct cam_periph *periph;
struct pt_softc *softc;
int unit;
int error = 0;
unit = minor(dev);
periph = cam_extend_get(ptperiphs, unit);
if (periph == NULL)
return(ENXIO);
softc = (struct pt_softc *)periph->softc;
cam_periph_lock(periph);
switch(ap->a_cmd) {
case PTIOCGETTIMEOUT:
if (softc->io_timeout >= 1000)
*(int *)addr = softc->io_timeout / 1000;
else
*(int *)addr = 0;
break;
case PTIOCSETTIMEOUT:
if (*(int *)addr < 1) {
error = EINVAL;
break;
}
softc->io_timeout = *(int *)addr * 1000;
break;
default:
error = cam_periph_ioctl(periph, ap->a_cmd, addr, pterror);
break;
}
cam_periph_unlock(periph);
return(error);
}
static int
ptopen(dev_t dev, int flags, int fmt, struct proc *p)
{
struct cam_periph *periph;
struct pt_softc *softc;
int unit;
int error;
int s;
unit = minor(dev);
periph = cam_extend_get(ptperiphs, unit);
if (periph == NULL)
return (ENXIO);
softc = (struct pt_softc *)periph->softc;
s = splsoftcam();
if (softc->flags & PT_FLAG_DEVICE_INVALID) {
splx(s);
return(ENXIO);
}
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
("ptopen: dev=%s (unit %d)\n", devtoname(dev), unit));
if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
splx(s);
return (error); /* error code from tsleep */
}
splx(s);
if ((softc->flags & PT_FLAG_OPEN) == 0) {
if (cam_periph_acquire(periph) != CAM_REQ_CMP)
error = ENXIO;
else
softc->flags |= PT_FLAG_OPEN;
} else
error = EBUSY;
cam_periph_unlock(periph);
return (error);
}
static int
ptclose(struct dev_close_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct cam_periph *periph;
struct pt_softc *softc;
int unit;
unit = minor(dev);
periph = cam_extend_get(ptperiphs, unit);
if (periph == NULL)
return (ENXIO);
softc = (struct pt_softc *)periph->softc;
cam_periph_lock(periph);
softc->flags &= ~PT_FLAG_OPEN;
cam_periph_unlock(periph);
cam_periph_release(periph);
return (0);
}
static int
ptclose(dev_t dev, int flag, int fmt, struct proc *p)
{
struct cam_periph *periph;
struct pt_softc *softc;
int unit;
int error;
unit = minor(dev);
periph = cam_extend_get(ptperiphs, unit);
if (periph == NULL)
return (ENXIO);
softc = (struct pt_softc *)periph->softc;
if ((error = cam_periph_lock(periph, PRIBIO)) != 0)
return (error); /* error code from tsleep */
softc->flags &= ~PT_FLAG_OPEN;
cam_periph_unlock(periph);
cam_periph_release(periph);
return (0);
}
static int
ptopen(struct dev_open_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct cam_periph *periph;
struct pt_softc *softc;
int unit;
int error = 0;
unit = minor(dev);
periph = cam_extend_get(ptperiphs, unit);
if (cam_periph_acquire(periph) != CAM_REQ_CMP)
return (ENXIO);
softc = (struct pt_softc *)periph->softc;
cam_periph_lock(periph);
if (softc->flags & PT_FLAG_DEVICE_INVALID) {
cam_periph_unlock(periph);
cam_periph_release(periph);
return(ENXIO);
}
if ((softc->flags & PT_FLAG_OPEN) == 0)
softc->flags |= PT_FLAG_OPEN;
else {
error = EBUSY;
cam_periph_release(periph);
}
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
("ptopen: dev=%s\n", devtoname(dev)));
cam_periph_unlock(periph);
return (error);
}
