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NetBSD/sys/dev/ieee1394/fwdev.c

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/* $NetBSD: fwdev.c,v 1.32 2017/06/25 12:39:27 maxv Exp $ */
/*-
* Copyright (c) 2003 Hidetoshi Shimokawa
* Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the acknowledgement as bellow:
*
* This product includes software developed by K. Kobayashi and H. Shimokawa
*
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
* $FreeBSD: src/sys/dev/firewire/fwdev.c,v 1.52 2007/06/06 14:31:36 simokawa Exp $
*
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: fwdev.c,v 1.32 2017/06/25 12:39:27 maxv Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/errno.h>
#include <sys/buf.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/poll.h>
#include <sys/proc.h>
#include <sys/select.h>
#include <dev/ieee1394/firewire.h>
#include <dev/ieee1394/firewirereg.h>
#include <dev/ieee1394/fwdma.h>
#include <dev/ieee1394/fwmem.h>
#include <dev/ieee1394/iec68113.h>
#include "ioconf.h"
#define FWNODE_INVAL 0xffff
dev_type_open(fw_open);
dev_type_close(fw_close);
dev_type_read(fw_read);
dev_type_write(fw_write);
dev_type_ioctl(fw_ioctl);
dev_type_poll(fw_poll);
dev_type_mmap(fw_mmap);
dev_type_strategy(fw_strategy);
const struct bdevsw fw_bdevsw = {
.d_open = fw_open,
.d_close = fw_close,
.d_strategy = fw_strategy,
.d_ioctl = fw_ioctl,
.d_dump = nodump,
.d_psize = nosize,
.d_discard = nodiscard,
.d_flag = D_OTHER
};
const struct cdevsw fw_cdevsw = {
.d_open = fw_open,
.d_close = fw_close,
.d_read = fw_read,
.d_write = fw_write,
.d_ioctl = fw_ioctl,
.d_stop = nostop,
.d_tty = notty,
.d_poll = fw_poll,
.d_mmap = fw_mmap,
.d_kqfilter = nokqfilter,
.d_discard = nodiscard,
.d_flag = D_OTHER
};
struct fw_drv1 {
struct firewire_comm *fc;
struct fw_xferq *ir;
struct fw_xferq *it;
struct fw_isobufreq bufreq;
STAILQ_HEAD(, fw_bind) binds;
STAILQ_HEAD(, fw_xfer) rq;
kcondvar_t cv;
};
static int fwdev_allocbuf(struct firewire_comm *, struct fw_xferq *,
struct fw_bufspec *);
static int fwdev_freebuf(struct fw_xferq *);
static int fw_read_async(struct fw_drv1 *, struct uio *, int);
static int fw_write_async(struct fw_drv1 *, struct uio *, int);
static void fw_hand(struct fw_xfer *);
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);
cv_init(&d->cv, "fwra");
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;
}
cv_destroy(&d->cv);
free(sc->si_drv1, M_FW);
sc->si_drv1 = NULL;
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;
err = cv_timedwait_sig(&ir->cv, &fc->fc_mtx, hz);
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_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
err = cv_timedwait_sig(&it->cv, &fc->fc_mtx, hz);
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_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
err = EINVAL;
break;
case FW_SRSTREAM:
if (ir == NULL) {
i = fw_open_isodma(fc, /* tx */0);
if (i < 0) {
err = EBUSY;
break;
}
ir = fc->ir[i];
err = fwdev_allocbuf(fc, ir, &d->bufreq.rx);
if (err) {
ir->flag &= ~FWXFERQ_OPEN;
break;
}
}
ir->flag &= ~0xff;
ir->flag |= (0x3f & ichreq->ch);
ir->flag |= ((0x3 & ichreq->tag) << 6);
d->ir = ir;
err = fc->irx_enable(fc, ir->dmach);
break;
case FW_GRSTREAM:
if (d->ir != NULL) {
ichreq->ch = ir->flag & 0x3f;
ichreq->tag = ir->flag >> 2 & 0x3;
} else
err = EINVAL;
break;
case FW_SSTBUF:
memcpy(&d->bufreq, ibufreq, sizeof(d->bufreq));
break;
case FW_GSTBUF:
memset(&ibufreq->rx, 0, sizeof(ibufreq->rx));
if (ir != NULL) {
ibufreq->rx.nchunk = ir->bnchunk;
ibufreq->rx.npacket = ir->bnpacket;
ibufreq->rx.psize = ir->psize;
}
memset(&ibufreq->tx, 0, sizeof(ibufreq->tx));
if (it != NULL) {
ibufreq->tx.nchunk = it->bnchunk;
ibufreq->tx.npacket = it->bnpacket;
ibufreq->tx.psize = it->psize;
}
break;
case FW_ASYREQ:
{
const struct tcode_info *tinfo;
int pay_len = 0;
fp = &asyreq->pkt;
tinfo = &fc->tcode[fp->mode.hdr.tcode];
if ((tinfo->flag & FWTI_BLOCK_ASY) != 0)
pay_len = MAX(0, asyreq->req.len - tinfo->hdr_len);
xfer = fw_xfer_alloc_buf(M_FW, pay_len, PAGE_SIZE/*XXX*/);
if (xfer == NULL)
return ENOMEM;
switch (asyreq->req.type) {
case FWASREQNODE:
break;
case FWASREQEUI:
fwdev = fw_noderesolve_eui64(fc, &asyreq->req.dst.eui);
if (fwdev == NULL) {
aprint_error_dev(fc->bdev,
"cannot find node\n");
err = EINVAL;
goto out;
}
fp->mode.hdr.dst = FWLOCALBUS | fwdev->dst;
break;
case FWASRESTL:
/* XXX what's this? */
break;
case FWASREQSTREAM:
/* nothing to do */
break;
}
memcpy(&xfer->send.hdr, fp, tinfo->hdr_len);
if (pay_len > 0)
memcpy(xfer->send.payload, (char *)fp + tinfo->hdr_len,
pay_len);
xfer->send.spd = asyreq->req.sped;
xfer->hand = fw_xferwake;
if ((err = fw_asyreq(fc, -1, xfer)) != 0)
goto out;
if ((err = fw_xferwait(xfer)) != 0)
goto out;
if (xfer->resp != 0) {
err = EIO;
goto out;
}
if ((tinfo->flag & FWTI_TLABEL) == 0)
goto out;
/* copy response */
tinfo = &fc->tcode[xfer->recv.hdr.mode.hdr.tcode];
if (xfer->recv.hdr.mode.hdr.tcode == FWTCODE_RRESB ||
xfer->recv.hdr.mode.hdr.tcode == FWTCODE_LRES) {
pay_len = xfer->recv.pay_len;
if (asyreq->req.len >=
xfer->recv.pay_len + tinfo->hdr_len)
asyreq->req.len =
xfer->recv.pay_len + tinfo->hdr_len;
else {
err = EINVAL;
pay_len = 0;
}
} else
pay_len = 0;
memcpy(fp, &xfer->recv.hdr, tinfo->hdr_len);
memcpy((char *)fp + tinfo->hdr_len, xfer->recv.payload,
pay_len);
out:
fw_xfer_free_buf(xfer);
break;
}
case FW_IBUSRST:
fc->ibr(fc);
break;
case FW_CBINDADDR:
fwb = fw_bindlookup(fc, bindreq->start.hi, bindreq->start.lo);
if (fwb == NULL) {
err = EINVAL;
break;
}
fw_bindremove(fc, fwb);
STAILQ_REMOVE(&d->binds, fwb, fw_bind, chlist);
fw_xferlist_remove(&fwb->xferlist);
free(fwb, M_FW);
break;
case FW_SBINDADDR:
if (bindreq->len <= 0 ) {
err = EINVAL;
break;
}
if (bindreq->start.hi > 0xffff ) {
err = EINVAL;
break;
}
fwb = (struct fw_bind *)malloc(sizeof(struct fw_bind),
M_FW, M_WAITOK);
if (fwb == NULL) {
err = ENOMEM;
break;
}
fwb->start = ((u_int64_t)bindreq->start.hi << 32) |
bindreq->start.lo;
fwb->end = fwb->start + bindreq->len;
fwb->sc = (void *)d;
STAILQ_INIT(&fwb->xferlist);
err = fw_bindadd(fc, fwb);
if (err == 0) {
fw_xferlist_add(&fwb->xferlist, M_FW,
/* XXX */
PAGE_SIZE, PAGE_SIZE, 5, fc, (void *)fwb, fw_hand);
STAILQ_INSERT_TAIL(&d->binds, fwb, chlist);
} else {
free(fwb, M_FW);
}
break;
case FW_GDEVLST:
i = len = 1;
/* myself */
devinfo = fwdevlst->dev;
devinfo->dst = fc->nodeid;
devinfo->status = 0; /* XXX */
devinfo->eui.hi = fc->eui.hi;
devinfo->eui.lo = fc->eui.lo;
STAILQ_FOREACH(fwdev, &fc->devices, link) {
if (len < FW_MAX_DEVLST) {
devinfo = &fwdevlst->dev[len++];
devinfo->dst = fwdev->dst;
devinfo->status =
(fwdev->status == FWDEVINVAL) ? 0 : 1;
devinfo->eui.hi = fwdev->eui.hi;
devinfo->eui.lo = fwdev->eui.lo;
}
i++;
}
fwdevlst->n = i;
fwdevlst->info_len = len;
break;
case FW_GTPMAP:
memcpy(data, fc->topology_map,
(fc->topology_map->crc_len + 1) * 4);
break;
case FW_GCROM:
STAILQ_FOREACH(fwdev, &fc->devices, link)
if (FW_EUI64_EQUAL(fwdev->eui, crom_buf->eui))
break;
if (fwdev == NULL) {
if (!FW_EUI64_EQUAL(fc->eui, crom_buf->eui)) {
err = FWNODE_INVAL;
break;
}
/* myself */
ptr = malloc(CROMSIZE, M_FW, M_WAITOK);
len = CROMSIZE;
for (i = 0; i < CROMSIZE/4; i++)
((uint32_t *)ptr)[i] = ntohl(fc->config_rom[i]);
} else {
/* found */
ptr = (void *)fwdev->csrrom;
if (fwdev->rommax < CSRROMOFF)
len = 0;
else
len = fwdev->rommax - CSRROMOFF + 4;
}
if (crom_buf->len < len)
len = crom_buf->len;
else
crom_buf->len = len;
err = copyout(ptr, crom_buf->ptr, len);
if (fwdev == NULL)
/* myself */
free(ptr, M_FW);
break;
default:
fc->ioctl(dev, cmd, data, flag, td);
break;
}
return err;
}
int
fw_poll(dev_t dev, int events, struct lwp *td)
{
struct firewire_softc *sc;
struct fw_xferq *ir;
int revents, tmp;
sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev));
if (sc == NULL)
return ENXIO;
ir = ((struct fw_drv1 *)sc->si_drv1)->ir;
revents = 0;
tmp = POLLIN | POLLRDNORM;
if (events & tmp) {
if (STAILQ_FIRST(&ir->q) != NULL)
revents |= tmp;
else
selrecord(td, &ir->rsel);
}
tmp = POLLOUT | POLLWRNORM;
if (events & tmp)
/* XXX should be fixed */
revents |= tmp;
return revents;
}
paddr_t
fw_mmap(dev_t dev, off_t offset, int nproto)
{
struct firewire_softc *sc;
sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev));
if (sc == NULL)
return ENXIO;
return EINVAL;
}
void
fw_strategy(struct bio *bp)
{
struct firewire_softc *sc;
dev_t dev = bp->bio_dev;
sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev));
if (sc == NULL)
return;
if (DEV_FWMEM(dev)) {
fwmem_strategy(bp);
return;
}
bp->bio_error = EOPNOTSUPP;
bp->bio_resid = bp->bio_bcount;
biodone(bp);
}
static int
fwdev_allocbuf(struct firewire_comm *fc, struct fw_xferq *q,
struct fw_bufspec *b)
{
int i;
if (q->flag & (FWXFERQ_RUNNING | FWXFERQ_EXTBUF))
return EBUSY;
q->bulkxfer =
(struct fw_bulkxfer *)malloc(sizeof(struct fw_bulkxfer) * b->nchunk,
M_FW, M_WAITOK);
if (q->bulkxfer == NULL)
return ENOMEM;
b->psize = roundup2(b->psize, sizeof(uint32_t));
q->buf = fwdma_malloc_multiseg(fc, sizeof(uint32_t), b->psize,
b->nchunk * b->npacket, BUS_DMA_WAITOK);
if (q->buf == NULL) {
free(q->bulkxfer, M_FW);
q->bulkxfer = NULL;
return ENOMEM;
}
q->bnchunk = b->nchunk;
q->bnpacket = b->npacket;
q->psize = (b->psize + 3) & ~3;
q->queued = 0;
STAILQ_INIT(&q->stvalid);
STAILQ_INIT(&q->stfree);
STAILQ_INIT(&q->stdma);
q->stproc = NULL;
for (i = 0 ; i < q->bnchunk; i++) {
q->bulkxfer[i].poffset = i * q->bnpacket;
q->bulkxfer[i].mbuf = NULL;
STAILQ_INSERT_TAIL(&q->stfree, &q->bulkxfer[i], link);
}
q->flag &= ~FWXFERQ_MODEMASK;
q->flag |= FWXFERQ_STREAM;
q->flag |= FWXFERQ_EXTBUF;
return 0;
}
static int
fwdev_freebuf(struct fw_xferq *q)
{
if (q->flag & FWXFERQ_EXTBUF) {
if (q->buf != NULL)
fwdma_free_multiseg(q->buf);
q->buf = NULL;
free(q->bulkxfer, M_FW);
q->bulkxfer = NULL;
q->flag &= ~FWXFERQ_EXTBUF;
q->psize = 0;
q->maxq = FWMAXQUEUE;
}
return 0;
}
static int
fw_read_async(struct fw_drv1 *d, struct uio *uio, int ioflag)
{
struct fw_xfer *xfer;
struct fw_bind *fwb;
struct fw_pkt *fp;
const struct tcode_info *tinfo;
int err = 0;
mutex_enter(&d->fc->fc_mtx);
for (;;) {
xfer = STAILQ_FIRST(&d->rq);
if (xfer == NULL && err == 0) {
err = cv_wait_sig(&d->cv, &d->fc->fc_mtx);
if (err) {
mutex_exit(&d->fc->fc_mtx);
return err;
}
continue;
}
break;
}
STAILQ_REMOVE_HEAD(&d->rq, link);
mutex_exit(&d->fc->fc_mtx);
fp = &xfer->recv.hdr;
#if 0 /* for GASP ?? */
if (fc->irx_post != NULL)
fc->irx_post(fc, fp->mode.ld);
#endif
tinfo = &xfer->fc->tcode[fp->mode.hdr.tcode];
err = uiomove((void *)fp, tinfo->hdr_len, uio);
if (err)
goto out;
err = uiomove((void *)xfer->recv.payload, xfer->recv.pay_len, uio);
out:
/* recycle this xfer */
fwb = (struct fw_bind *)xfer->sc;
fw_xfer_unload(xfer);
xfer->recv.pay_len = PAGE_SIZE;
mutex_enter(&d->fc->fc_mtx);
STAILQ_INSERT_TAIL(&fwb->xferlist, xfer, link);
mutex_exit(&d->fc->fc_mtx);
return err;
}
static int
fw_write_async(struct fw_drv1 *d, struct uio *uio, int ioflag)
{
struct fw_xfer *xfer;
struct fw_pkt pkt;
const struct tcode_info *tinfo;
int err;
memset(&pkt, 0, sizeof(struct fw_pkt));
if ((err = uiomove((void *)&pkt, sizeof(uint32_t), uio)))
return err;
tinfo = &d->fc->tcode[pkt.mode.hdr.tcode];
if ((err = uiomove((char *)&pkt + sizeof(uint32_t),
tinfo->hdr_len - sizeof(uint32_t), uio)))
return err;
if ((xfer = fw_xfer_alloc_buf(M_FW, uio->uio_resid,
PAGE_SIZE/*XXX*/)) == NULL)
return ENOMEM;
memcpy(&xfer->send.hdr, &pkt, sizeof(struct fw_pkt));
xfer->send.pay_len = uio->uio_resid;
if (uio->uio_resid > 0) {
if ((err =
uiomove((void *)xfer->send.payload, uio->uio_resid, uio)))
goto out;
}
xfer->fc = d->fc;
xfer->sc = NULL;
xfer->hand = fw_xferwake;
xfer->send.spd = 2 /* XXX */;
if ((err = fw_asyreq(xfer->fc, -1, xfer)))
goto out;
if ((err = fw_xferwait(xfer)))
goto out;
if (xfer->resp != 0) {
err = xfer->resp;
goto out;
}
if (xfer->flag == FWXF_RCVD) {
mutex_enter(&xfer->fc->fc_mtx);
STAILQ_INSERT_TAIL(&d->rq, xfer, link);
mutex_exit(&xfer->fc->fc_mtx);
return 0;
}
out:
fw_xfer_free(xfer);
return err;
}
static void
fw_hand(struct fw_xfer *xfer)
{
struct fw_bind *fwb;
struct fw_drv1 *d;
fwb = (struct fw_bind *)xfer->sc;
d = (struct fw_drv1 *)fwb->sc;
mutex_enter(&xfer->fc->fc_mtx);
STAILQ_INSERT_TAIL(&d->rq, xfer, link);
cv_broadcast(&d->cv);
mutex_exit(&xfer->fc->fc_mtx);
}
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