int
fw_open(dev_t dev, int flags, int fmt, struct lwp *td)
{
struct firewire_softc *sc;
struct fw_drv1 *d;
int err = 0;
sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev));
if (sc == NULL)
return ENXIO;
if (DEV_FWMEM(dev))
return fwmem_open(dev, flags, fmt, td);
mutex_enter(&sc->fc->fc_mtx);
if (sc->si_drv1 != NULL) {
mutex_exit(&sc->fc->fc_mtx);
return EBUSY;
}
/* set dummy value for allocation */
sc->si_drv1 = (void *)-1;
mutex_exit(&sc->fc->fc_mtx);
sc->si_drv1 = malloc(sizeof(struct fw_drv1), M_FW, M_WAITOK | M_ZERO);
if (sc->si_drv1 == NULL)
return ENOMEM;
d = (struct fw_drv1 *)sc->si_drv1;
d->fc = sc->fc;
STAILQ_INIT(&d->binds);
STAILQ_INIT(&d->rq);
return err;
}
static int
fw_write (struct dev_write_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct uio *uio = ap->a_uio;
int err = 0;
struct firewire_softc *sc;
int unit = DEV2UNIT(dev);
int slept = 0;
struct fw_pkt *fp;
struct fw_xferq *it;
if (DEV_FWMEM(dev))
return physwrite(ap);
sc = devclass_get_softc(firewire_devclass, unit);
it = ((struct fw_drv1 *)dev->si_drv1)->it;
if (it == NULL || it->buf == NULL)
return (EIO);
isoloop:
if (it->stproc == NULL) {
it->stproc = STAILQ_FIRST(&it->stfree);
if (it->stproc != NULL) {
crit_enter();
STAILQ_REMOVE_HEAD(&it->stfree, link);
crit_exit();
it->queued = 0;
} else if (slept == 0) {
slept = 1;
err = sc->fc->itx_enable(sc->fc, it->dmach);
if (err)
return err;
err = tsleep(it, FWPRI, "fw_write", hz);
if (err)
return err;
goto isoloop;
} else {
err = EIO;
return err;
}
}
fp = (struct fw_pkt *)fwdma_v_addr(it->buf,
it->stproc->poffset + it->queued);
err = uiomove((caddr_t)fp, sizeof(struct fw_isohdr), uio);
err = uiomove((caddr_t)fp->mode.stream.payload,
fp->mode.stream.len, uio);
it->queued ++;
if (it->queued >= it->bnpacket) {
crit_enter();
STAILQ_INSERT_TAIL(&it->stvalid, it->stproc, link);
crit_exit();
it->stproc = NULL;
err = sc->fc->itx_enable(sc->fc, it->dmach);
}
if (uio->uio_resid >= sizeof(struct fw_isohdr)) {
slept = 0;
goto isoloop;
}
return err;
}
static int
fw_open (struct dev_open_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
int err = 0;
if (DEV_FWMEM(dev))
return fwmem_open(ap);
if (dev->si_drv1 != NULL)
return (EBUSY);
#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
if ((dev->si_flags & SI_NAMED) == 0) {
int unit = DEV2UNIT(dev);
int sub = DEV2SUB(dev);
make_dev(&firewire_ops, minor(dev),
UID_ROOT, GID_OPERATOR, 0660,
"fw%d.%d", unit, sub);
}
#endif
dev->si_drv1 = kmalloc(sizeof(struct fw_drv1), M_FW, M_WAITOK | M_ZERO);
return err;
}
static int
fw_open (struct cdev *dev, int flags, int fmt, fw_proc *td)
{
int err = 0;
int unit = DEV2UNIT(dev);
struct fw_drv1 *d;
struct firewire_softc *sc;
if (DEV_FWMEM(dev))
return fwmem_open(dev, flags, fmt, td);
sc = devclass_get_softc(firewire_devclass, unit);
if (sc == NULL)
return (ENXIO);
FW_GLOCK(sc->fc);
if (dev->si_drv1 != NULL) {
FW_GUNLOCK(sc->fc);
return (EBUSY);
}
/* set dummy value for allocation */
dev->si_drv1 = (void *)-1;
FW_GUNLOCK(sc->fc);
dev->si_drv1 = malloc(sizeof(struct fw_drv1), M_FW, M_WAITOK | M_ZERO);
if (dev->si_drv1 == NULL)
return (ENOMEM);
#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
if ((dev->si_flags & SI_NAMED) == 0) {
int unit = DEV2UNIT(dev);
int sub = DEV2SUB(dev);
make_dev(&firewire_cdevsw, dev2unit(dev),
UID_ROOT, GID_OPERATOR, 0660,
"fw%d.%d", unit, sub);
}
#endif
d = (struct fw_drv1 *)dev->si_drv1;
d->fc = sc->fc;
STAILQ_INIT(&d->binds);
STAILQ_INIT(&d->rq);
return err;
}
int
fwmem_open(struct cdev *dev, int flags, int fmt, fw_proc *td)
{
struct fwmem_softc *fms;
struct firewire_softc *sc;
int unit = DEV2UNIT(dev);
sc = devclass_get_softc(firewire_devclass, unit);
if (sc == NULL)
return (ENXIO);
FW_GLOCK(sc->fc);
if (dev->si_drv1 != NULL) {
if ((flags & FWRITE) != 0) {
FW_GUNLOCK(sc->fc);
return (EBUSY);
}
FW_GUNLOCK(sc->fc);
fms = dev->si_drv1;
fms->refcount++;
} else {
dev->si_drv1 = (void *)-1;
FW_GUNLOCK(sc->fc);
dev->si_drv1 = malloc(sizeof(struct fwmem_softc),
M_FWMEM, M_WAITOK);
if (dev->si_drv1 == NULL)
return (ENOMEM);
dev->si_iosize_max = DFLTPHYS;
fms = dev->si_drv1;
bcopy(&fwmem_eui64, &fms->eui, sizeof(struct fw_eui64));
fms->sc = sc;
fms->refcount = 1;
}
if (fwmem_debug)
printf("%s: refcount=%d\n", __func__, fms->refcount);
return (0);
}
int
fw_ioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *td)
{
struct firewire_softc *sc;
struct firewire_comm *fc;
struct fw_drv1 *d;
struct fw_device *fwdev;
struct fw_bind *fwb;
struct fw_xferq *ir, *it;
struct fw_xfer *xfer;
struct fw_pkt *fp;
struct fw_devinfo *devinfo;
struct fw_devlstreq *fwdevlst = (struct fw_devlstreq *)data;
struct fw_asyreq *asyreq = (struct fw_asyreq *)data;
struct fw_isochreq *ichreq = (struct fw_isochreq *)data;
struct fw_isobufreq *ibufreq = (struct fw_isobufreq *)data;
struct fw_asybindreq *bindreq = (struct fw_asybindreq *)data;
struct fw_crom_buf *crom_buf = (struct fw_crom_buf *)data;
int i, len, err = 0;
void *ptr;
sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev));
if (sc == NULL)
return ENXIO;
if (DEV_FWMEM(dev))
return fwmem_ioctl(dev, cmd, data, flag, td);
if (!data)
return EINVAL;
d = (struct fw_drv1 *)sc->si_drv1;
fc = d->fc;
ir = d->ir;
it = d->it;
switch (cmd) {
case FW_STSTREAM:
if (it == NULL) {
i = fw_open_isodma(fc, /* tx */1);
if (i < 0) {
err = EBUSY;
break;
}
it = fc->it[i];
err = fwdev_allocbuf(fc, it, &d->bufreq.tx);
if (err) {
it->flag &= ~FWXFERQ_OPEN;
break;
}
}
it->flag &= ~0xff;
it->flag |= (0x3f & ichreq->ch);
it->flag |= ((0x3 & ichreq->tag) << 6);
d->it = it;
break;
case FW_GTSTREAM:
if (it != NULL) {
ichreq->ch = it->flag & 0x3f;
ichreq->tag = it->flag >> 2 & 0x3;
} else
int
fw_write(dev_t dev, struct uio *uio, int ioflag)
{
struct firewire_softc *sc;
struct firewire_comm *fc;
struct fw_drv1 *d;
struct fw_pkt *fp;
struct fw_xferq *it;
int slept = 0, err = 0;
sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev));
if (sc == NULL)
return ENXIO;
if (DEV_FWMEM(dev))
return physio(fw_strategy, NULL, dev, ioflag, minphys, uio);
d = (struct fw_drv1 *)sc->si_drv1;
fc = d->fc;
it = d->it;
if (it == NULL)
return fw_write_async(d, uio, ioflag);
if (it->buf == NULL)
return EIO;
mutex_enter(&fc->fc_mtx);
isoloop:
if (it->stproc == NULL) {
it->stproc = STAILQ_FIRST(&it->stfree);
if (it->stproc != NULL) {
STAILQ_REMOVE_HEAD(&it->stfree, link);
it->queued = 0;
} else if (slept == 0) {
slept = 1;
#if 0 /* XXX to avoid lock recursion */
err = fc->itx_enable(fc, it->dmach);
if (err)
goto out;
#endif
mutex_exit(&fc->fc_mtx);
err = tsleep(it, FWPRI, "fw_write", hz);
mutex_enter(&fc->fc_mtx);
if (err)
goto out;
goto isoloop;
} else {
err = EIO;
goto out;
}
}
mutex_exit(&fc->fc_mtx);
fp = (struct fw_pkt *)fwdma_v_addr(it->buf,
it->stproc->poffset + it->queued);
err = uiomove((void *)fp, sizeof(struct fw_isohdr), uio);
if (err != 0)
return err;
err =
uiomove((void *)fp->mode.stream.payload, fp->mode.stream.len, uio);
it->queued++;
if (it->queued >= it->bnpacket) {
STAILQ_INSERT_TAIL(&it->stvalid, it->stproc, link);
it->stproc = NULL;
err = fc->itx_enable(fc, it->dmach);
}
if (uio->uio_resid >= sizeof(struct fw_isohdr)) {
slept = 0;
mutex_enter(&fc->fc_mtx);
goto isoloop;
}
return err;
out:
mutex_exit(&fc->fc_mtx);
return err;
}
int
fw_read(dev_t dev, struct uio *uio, int ioflag)
{
struct firewire_softc *sc;
struct firewire_comm *fc;
struct fw_drv1 *d;
struct fw_xferq *ir;
struct fw_pkt *fp;
int err = 0, slept = 0;
sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev));
if (sc == NULL)
return ENXIO;
if (DEV_FWMEM(dev))
return physio(fw_strategy, NULL, dev, ioflag, minphys, uio);
d = (struct fw_drv1 *)sc->si_drv1;
fc = d->fc;
ir = d->ir;
if (ir == NULL)
return fw_read_async(d, uio, ioflag);
if (ir->buf == NULL)
return EIO;
mutex_enter(&fc->fc_mtx);
readloop:
if (ir->stproc == NULL) {
/* iso bulkxfer */
ir->stproc = STAILQ_FIRST(&ir->stvalid);
if (ir->stproc != NULL) {
STAILQ_REMOVE_HEAD(&ir->stvalid, link);
ir->queued = 0;
}
}
if (ir->stproc == NULL) {
/* no data avaliable */
if (slept == 0) {
slept = 1;
ir->flag |= FWXFERQ_WAKEUP;
mutex_exit(&fc->fc_mtx);
err = tsleep(ir, FWPRI, "fw_read", hz);
mutex_enter(&fc->fc_mtx);
ir->flag &= ~FWXFERQ_WAKEUP;
if (err == 0)
goto readloop;
} else if (slept == 1)
err = EIO;
mutex_exit(&fc->fc_mtx);
return err;
} else if (ir->stproc != NULL) {
/* iso bulkxfer */
mutex_exit(&fc->fc_mtx);
fp = (struct fw_pkt *)fwdma_v_addr(ir->buf,
ir->stproc->poffset + ir->queued);
if (fc->irx_post != NULL)
fc->irx_post(fc, fp->mode.ld);
if (fp->mode.stream.len == 0)
return EIO;
err = uiomove((void *)fp,
fp->mode.stream.len + sizeof(uint32_t), uio);
ir->queued++;
if (ir->queued >= ir->bnpacket) {
STAILQ_INSERT_TAIL(&ir->stfree, ir->stproc, link);
fc->irx_enable(fc, ir->dmach);
ir->stproc = NULL;
}
if (uio->uio_resid >= ir->psize) {
slept = -1;
mutex_enter(&fc->fc_mtx);
goto readloop;
}
} else
mutex_exit(&fc->fc_mtx);
return err;
}
int
fw_close(dev_t dev, int flags, int fmt, struct lwp *td)
{
struct firewire_softc *sc;
struct firewire_comm *fc;
struct fw_drv1 *d;
struct fw_xfer *xfer;
struct fw_bind *fwb;
int err = 0;
sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev));
if (sc == NULL)
return ENXIO;
if (DEV_FWMEM(dev))
return fwmem_close(dev, flags, fmt, td);
d = (struct fw_drv1 *)sc->si_drv1;
fc = d->fc;
/* remove binding */
for (fwb = STAILQ_FIRST(&d->binds); fwb != NULL;
fwb = STAILQ_FIRST(&d->binds)) {
fw_bindremove(fc, fwb);
STAILQ_REMOVE_HEAD(&d->binds, chlist);
fw_xferlist_remove(&fwb->xferlist);
free(fwb, M_FW);
}
if (d->ir != NULL) {
struct fw_xferq *ir = d->ir;
if ((ir->flag & FWXFERQ_OPEN) == 0)
return EINVAL;
if (ir->flag & FWXFERQ_RUNNING) {
ir->flag &= ~FWXFERQ_RUNNING;
fc->irx_disable(fc, ir->dmach);
}
/* free extbuf */
fwdev_freebuf(ir);
/* drain receiving buffer */
for (xfer = STAILQ_FIRST(&ir->q); xfer != NULL;
xfer = STAILQ_FIRST(&ir->q)) {
ir->queued--;
STAILQ_REMOVE_HEAD(&ir->q, link);
xfer->resp = 0;
fw_xfer_done(xfer);
}
ir->flag &=
~(FWXFERQ_OPEN | FWXFERQ_MODEMASK | FWXFERQ_CHTAGMASK);
d->ir = NULL;
}
if (d->it != NULL) {
struct fw_xferq *it = d->it;
if ((it->flag & FWXFERQ_OPEN) == 0)
return EINVAL;
if (it->flag & FWXFERQ_RUNNING) {
it->flag &= ~FWXFERQ_RUNNING;
fc->itx_disable(fc, it->dmach);
}
/* free extbuf */
fwdev_freebuf(it);
it->flag &=
~(FWXFERQ_OPEN | FWXFERQ_MODEMASK | FWXFERQ_CHTAGMASK);
d->it = NULL;
}
free(sc->si_drv1, M_FW);
sc->si_drv1 = NULL;
return err;
}
/*
* ioctl support.
*/
int
fw_ioctl (struct dev_ioctl_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct firewire_softc *sc;
struct firewire_comm *fc;
struct fw_drv1 *d;
int unit = DEV2UNIT(dev);
int i, len, err = 0;
struct fw_device *fwdev;
struct fw_bind *fwb;
struct fw_xferq *ir, *it;
struct fw_xfer *xfer;
struct fw_pkt *fp;
struct fw_devinfo *devinfo;
void *ptr;
struct fw_devlstreq *fwdevlst = (struct fw_devlstreq *)ap->a_data;
struct fw_asyreq *asyreq = (struct fw_asyreq *)ap->a_data;
struct fw_isochreq *ichreq = (struct fw_isochreq *)ap->a_data;
struct fw_isobufreq *ibufreq = (struct fw_isobufreq *)ap->a_data;
struct fw_asybindreq *bindreq = (struct fw_asybindreq *)ap->a_data;
struct fw_crom_buf *crom_buf = (struct fw_crom_buf *)ap->a_data;
if (DEV_FWMEM(dev))
return fwmem_ioctl(ap);
if (!ap->a_data)
return(EINVAL);
sc = devclass_get_softc(firewire_devclass, unit);
fc = sc->fc;
d = (struct fw_drv1 *)dev->si_drv1;
ir = d->ir;
it = d->it;
switch (ap->a_cmd) {
case FW_STSTREAM:
if (it == NULL) {
for (i = 0; i < fc->nisodma; i ++) {
it = fc->it[i];
if ((it->flag & FWXFERQ_OPEN) == 0)
break;
}
if (i >= fc->nisodma) {
err = EBUSY;
break;
}
err = fwdev_allocbuf(fc, it, &d->bufreq.tx);
if (err)
break;
it->flag |= FWXFERQ_OPEN;
}
it->flag &= ~0xff;
it->flag |= (0x3f & ichreq->ch);
it->flag |= ((0x3 & ichreq->tag) << 6);
d->it = it;
break;
case FW_GTSTREAM:
if (it != NULL) {
ichreq->ch = it->flag & 0x3f;
ichreq->tag = it->flag >> 2 & 0x3;
} else
/*
* read request.
*/
static int
fw_read (struct dev_read_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct uio *uio = ap->a_uio;
struct firewire_softc *sc;
struct fw_xferq *ir;
struct fw_xfer *xfer;
int err = 0, slept = 0;
int unit = DEV2UNIT(dev);
struct fw_pkt *fp;
if (DEV_FWMEM(dev))
return physread(ap);
sc = devclass_get_softc(firewire_devclass, unit);
ir = ((struct fw_drv1 *)dev->si_drv1)->ir;
if (ir == NULL || ir->buf == NULL)
return (EIO);
readloop:
xfer = STAILQ_FIRST(&ir->q);
if (ir->stproc == NULL) {
/* iso bulkxfer */
ir->stproc = STAILQ_FIRST(&ir->stvalid);
if (ir->stproc != NULL) {
crit_enter();
STAILQ_REMOVE_HEAD(&ir->stvalid, link);
crit_exit();
ir->queued = 0;
}
}
if (xfer == NULL && ir->stproc == NULL) {
/* no data avaliable */
if (slept == 0) {
slept = 1;
ir->flag |= FWXFERQ_WAKEUP;
err = tsleep(ir, FWPRI, "fw_read", hz);
ir->flag &= ~FWXFERQ_WAKEUP;
if (err == 0)
goto readloop;
} else if (slept == 1)
err = EIO;
return err;
} else if(xfer != NULL) {
#if 0 /* XXX broken */
/* per packet mode or FWACT_CH bind?*/
crit_enter();
ir->queued --;
STAILQ_REMOVE_HEAD(&ir->q, link);
crit_exit();
fp = &xfer->recv.hdr;
if (sc->fc->irx_post != NULL)
sc->fc->irx_post(sc->fc, fp->mode.ld);
err = uiomove((void *)fp, 1 /* XXX header size */, uio);
/* XXX copy payload too */
/* XXX we should recycle this xfer */
#endif
fw_xfer_free( xfer);
} else if(ir->stproc != NULL) {
/* iso bulkxfer */
fp = (struct fw_pkt *)fwdma_v_addr(ir->buf,
ir->stproc->poffset + ir->queued);
if(sc->fc->irx_post != NULL)
sc->fc->irx_post(sc->fc, fp->mode.ld);
if(fp->mode.stream.len == 0){
err = EIO;
return err;
}
err = uiomove((caddr_t)fp,
fp->mode.stream.len + sizeof(u_int32_t), uio);
ir->queued ++;
if(ir->queued >= ir->bnpacket){
crit_enter();
STAILQ_INSERT_TAIL(&ir->stfree, ir->stproc, link);
crit_exit();
sc->fc->irx_enable(sc->fc, ir->dmach);
ir->stproc = NULL;
}
if (uio->uio_resid >= ir->psize) {
slept = -1;
goto readloop;
}
}
return err;
}
static int
fw_close (struct dev_close_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct firewire_softc *sc;
struct firewire_comm *fc;
struct fw_drv1 *d;
int unit = DEV2UNIT(dev);
struct fw_xfer *xfer;
struct fw_bind *fwb;
int err = 0;
if (DEV_FWMEM(dev))
return fwmem_close(ap);
sc = devclass_get_softc(firewire_devclass, unit);
fc = sc->fc;
d = (struct fw_drv1 *)dev->si_drv1;
if (d->ir != NULL) {
struct fw_xferq *ir = d->ir;
if ((ir->flag & FWXFERQ_OPEN) == 0)
return (EINVAL);
if (ir->flag & FWXFERQ_RUNNING) {
ir->flag &= ~FWXFERQ_RUNNING;
fc->irx_disable(fc, ir->dmach);
}
/* free extbuf */
fwdev_freebuf(ir);
/* drain receiving buffer */
for (xfer = STAILQ_FIRST(&ir->q);
xfer != NULL; xfer = STAILQ_FIRST(&ir->q)) {
ir->queued --;
STAILQ_REMOVE_HEAD(&ir->q, link);
xfer->resp = 0;
fw_xfer_done(xfer);
}
/* remove binding */
for (fwb = STAILQ_FIRST(&ir->binds); fwb != NULL;
fwb = STAILQ_FIRST(&ir->binds)) {
STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
STAILQ_REMOVE_HEAD(&ir->binds, chlist);
kfree(fwb, M_FW);
}
ir->flag &= ~(FWXFERQ_OPEN |
FWXFERQ_MODEMASK | FWXFERQ_CHTAGMASK);
d->ir = NULL;
}
if (d->it != NULL) {
struct fw_xferq *it = d->it;
if ((it->flag & FWXFERQ_OPEN) == 0)
return (EINVAL);
if (it->flag & FWXFERQ_RUNNING) {
it->flag &= ~FWXFERQ_RUNNING;
fc->itx_disable(fc, it->dmach);
}
/* free extbuf */
fwdev_freebuf(it);
it->flag &= ~(FWXFERQ_OPEN |
FWXFERQ_MODEMASK | FWXFERQ_CHTAGMASK);
d->it = NULL;
}
kfree(dev->si_drv1, M_FW);
dev->si_drv1 = NULL;
return err;
}
