freebsd-dev/sys/dev/firewire/fwdev.c
Hidetoshi Shimokawa 85b2d114c0 Set the local bus address in xfer->dst.
Submitted by: Buzz Slye <buzz@gaia.arc.nasa.gov>
2003-04-22 02:31:31 +00:00

704 lines
18 KiB
C

/*
* 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.
*
* $FreeBSD$
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/conf.h>
#include <sys/poll.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/ioccom.h>
#include <dev/firewire/firewire.h>
#include <dev/firewire/firewirereg.h>
#include <dev/firewire/fwdma.h>
#include <dev/firewire/fwmem.h>
#include <dev/firewire/iec68113.h>
#define CDEV_MAJOR 127
#define FWNODE_INVAL 0xffff
static d_open_t fw_open;
static d_close_t fw_close;
static d_ioctl_t fw_ioctl;
static d_poll_t fw_poll;
static d_read_t fw_read; /* for Isochronous packet */
static d_write_t fw_write;
static d_mmap_t fw_mmap;
struct cdevsw firewire_cdevsw =
{
#if __FreeBSD_version >= 500104
.d_open = fw_open,
.d_close = fw_close,
.d_read = fw_read,
.d_write = fw_write,
.d_ioctl = fw_ioctl,
.d_poll = fw_poll,
.d_mmap = fw_mmap,
.d_name = "fw",
.d_maj = CDEV_MAJOR,
.d_flags = D_MEM
#else
fw_open, fw_close, fw_read, fw_write, fw_ioctl,
fw_poll, fw_mmap, nostrategy, "fw", CDEV_MAJOR, nodump, nopsize, D_MEM
#endif
};
static int
fw_open (dev_t dev, int flags, int fmt, fw_proc *td)
{
struct firewire_softc *sc;
int unit = DEV2UNIT(dev);
int sub = DEV2DMACH(dev);
int err = 0;
if (DEV_FWMEM(dev))
return fwmem_open(dev, flags, fmt, td);
sc = devclass_get_softc(firewire_devclass, unit);
if(sc->fc->ir[sub]->flag & FWXFERQ_OPEN){
err = EBUSY;
return err;
}
if(sc->fc->it[sub]->flag & FWXFERQ_OPEN){
err = EBUSY;
return err;
}
if(sc->fc->ir[sub]->flag & FWXFERQ_MODEMASK){
err = EBUSY;
return err;
}
/* Default is per packet mode */
sc->fc->ir[sub]->flag |= FWXFERQ_OPEN;
sc->fc->it[sub]->flag |= FWXFERQ_OPEN;
return err;
}
static int
fw_close (dev_t dev, int flags, int fmt, fw_proc *td)
{
struct firewire_softc *sc;
int unit = DEV2UNIT(dev);
int sub = DEV2DMACH(dev);
struct fw_xfer *xfer;
struct fw_bind *fwb;
int err = 0;
if (DEV_FWMEM(dev))
return fwmem_close(dev, flags, fmt, td);
sc = devclass_get_softc(firewire_devclass, unit);
if(!(sc->fc->ir[sub]->flag & FWXFERQ_OPEN)){
err = EINVAL;
return err;
}
sc->fc->ir[sub]->flag &= ~FWXFERQ_OPEN;
if(!(sc->fc->it[sub]->flag & FWXFERQ_OPEN)){
err = EINVAL;
return err;
}
sc->fc->it[sub]->flag &= ~FWXFERQ_OPEN;
if(sc->fc->ir[sub]->flag & FWXFERQ_RUNNING){
sc->fc->irx_disable(sc->fc, sub);
}
if(sc->fc->it[sub]->flag & FWXFERQ_RUNNING){
sc->fc->it[sub]->flag &= ~FWXFERQ_RUNNING;
sc->fc->itx_disable(sc->fc, sub);
}
if(sc->fc->ir[sub]->flag & FWXFERQ_EXTBUF){
if (sc->fc->ir[sub]->buf != NULL)
fwdma_free_multiseg(sc->fc->ir[sub]->buf);
sc->fc->ir[sub]->buf = NULL;
free(sc->fc->ir[sub]->bulkxfer, M_FW);
sc->fc->ir[sub]->bulkxfer = NULL;
sc->fc->ir[sub]->flag &= ~FWXFERQ_EXTBUF;
sc->fc->ir[sub]->psize = PAGE_SIZE;
sc->fc->ir[sub]->maxq = FWMAXQUEUE;
}
if(sc->fc->it[sub]->flag & FWXFERQ_EXTBUF){
if (sc->fc->it[sub]->buf != NULL)
fwdma_free_multiseg(sc->fc->it[sub]->buf);
sc->fc->it[sub]->buf = NULL;
free(sc->fc->it[sub]->bulkxfer, M_FW);
sc->fc->it[sub]->bulkxfer = NULL;
sc->fc->it[sub]->flag &= ~FWXFERQ_EXTBUF;
sc->fc->it[sub]->psize = 0;
sc->fc->it[sub]->maxq = FWMAXQUEUE;
}
for(xfer = STAILQ_FIRST(&sc->fc->ir[sub]->q);
xfer != NULL; xfer = STAILQ_FIRST(&sc->fc->ir[sub]->q)){
sc->fc->ir[sub]->queued--;
STAILQ_REMOVE_HEAD(&sc->fc->ir[sub]->q, link);
xfer->resp = 0;
fw_xfer_done(xfer);
}
for(fwb = STAILQ_FIRST(&sc->fc->ir[sub]->binds); fwb != NULL;
fwb = STAILQ_FIRST(&sc->fc->ir[sub]->binds)){
STAILQ_REMOVE(&sc->fc->binds, fwb, fw_bind, fclist);
STAILQ_REMOVE_HEAD(&sc->fc->ir[sub]->binds, chlist);
free(fwb, M_FW);
}
sc->fc->ir[sub]->flag &= ~(FWXFERQ_MODEMASK | FWXFERQ_CHTAGMASK);
sc->fc->it[sub]->flag &= ~(FWXFERQ_MODEMASK | FWXFERQ_CHTAGMASK);
return err;
}
/*
* read request.
*/
static int
fw_read (dev_t dev, struct uio *uio, int ioflag)
{
struct firewire_softc *sc;
struct fw_xferq *ir;
struct fw_xfer *xfer;
int err = 0, s, slept = 0;
int unit = DEV2UNIT(dev);
int sub = DEV2DMACH(dev);
struct fw_pkt *fp;
if (DEV_FWMEM(dev))
return fwmem_read(dev, uio, ioflag);
sc = devclass_get_softc(firewire_devclass, unit);
ir = sc->fc->ir[sub];
readloop:
xfer = STAILQ_FIRST(&ir->q);
if (ir->stproc == NULL) {
/* iso bulkxfer */
ir->stproc = STAILQ_FIRST(&ir->stvalid);
if (ir->stproc != NULL) {
s = splfw();
STAILQ_REMOVE_HEAD(&ir->stvalid, link);
splx(s);
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) {
/* per packet mode or FWACT_CH bind?*/
s = splfw();
ir->queued --;
STAILQ_REMOVE_HEAD(&ir->q, link);
splx(s);
fp = (struct fw_pkt *)xfer->recv.buf;
if(sc->fc->irx_post != NULL)
sc->fc->irx_post(sc->fc, fp->mode.ld);
err = uiomove(xfer->recv.buf, xfer->recv.len, uio);
/* XXX we should recycle this xfer */
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){
s = splfw();
STAILQ_INSERT_TAIL(&ir->stfree, ir->stproc, link);
splx(s);
sc->fc->irx_enable(sc->fc, sub);
ir->stproc = NULL;
}
if (uio->uio_resid >= ir->psize) {
slept = -1;
goto readloop;
}
}
return err;
}
static int
fw_write (dev_t dev, struct uio *uio, int ioflag)
{
int err = 0;
struct firewire_softc *sc;
int unit = DEV2UNIT(dev);
int sub = DEV2DMACH(dev);
int s, slept = 0;
struct fw_pkt *fp;
struct firewire_comm *fc;
struct fw_xferq *it;
if (DEV_FWMEM(dev))
return fwmem_write(dev, uio, ioflag);
sc = devclass_get_softc(firewire_devclass, unit);
fc = sc->fc;
it = sc->fc->it[sub];
isoloop:
if (it->stproc == NULL) {
it->stproc = STAILQ_FIRST(&it->stfree);
if (it->stproc != NULL) {
s = splfw();
STAILQ_REMOVE_HEAD(&it->stfree, link);
splx(s);
it->queued = 0;
} else if (slept == 0) {
slept = 1;
err = sc->fc->itx_enable(sc->fc, sub);
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) {
s = splfw();
STAILQ_INSERT_TAIL(&it->stvalid, it->stproc, link);
splx(s);
it->stproc = NULL;
err = sc->fc->itx_enable(sc->fc, sub);
}
if (uio->uio_resid >= sizeof(struct fw_isohdr)) {
slept = 0;
goto isoloop;
}
return err;
}
/*
* ioctl support.
*/
int
fw_ioctl (dev_t dev, u_long cmd, caddr_t data, int flag, fw_proc *td)
{
struct firewire_softc *sc;
int unit = DEV2UNIT(dev);
int sub = DEV2DMACH(dev);
int s, 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;
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;
if (DEV_FWMEM(dev))
return fwmem_ioctl(dev, cmd, data, flag, td);
sc = devclass_get_softc(firewire_devclass, unit);
if (!data)
return(EINVAL);
switch (cmd) {
case FW_STSTREAM:
sc->fc->it[sub]->flag &= ~0xff;
sc->fc->it[sub]->flag |= (0x3f & ichreq->ch);
sc->fc->it[sub]->flag |= ((0x3 & ichreq->tag) << 6);
err = 0;
break;
case FW_GTSTREAM:
ichreq->ch = sc->fc->it[sub]->flag & 0x3f;
ichreq->tag =(sc->fc->it[sub]->flag) >> 2 & 0x3;
err = 0;
break;
case FW_SRSTREAM:
sc->fc->ir[sub]->flag &= ~0xff;
sc->fc->ir[sub]->flag |= (0x3f & ichreq->ch);
sc->fc->ir[sub]->flag |= ((0x3 & ichreq->tag) << 6);
err = sc->fc->irx_enable(sc->fc, sub);
break;
case FW_GRSTREAM:
ichreq->ch = sc->fc->ir[sub]->flag & 0x3f;
ichreq->tag =(sc->fc->ir[sub]->flag) >> 2 & 0x3;
err = 0;
break;
case FW_SSTBUF:
ir = sc->fc->ir[sub];
it = sc->fc->it[sub];
if(ir->flag & FWXFERQ_RUNNING || it->flag & FWXFERQ_RUNNING){
return(EBUSY);
}
if((ir->flag & FWXFERQ_EXTBUF) || (it->flag & FWXFERQ_EXTBUF)){
return(EBUSY);
}
if((ibufreq->rx.nchunk *
ibufreq->rx.psize * ibufreq->rx.npacket) +
(ibufreq->tx.nchunk *
ibufreq->tx.psize * ibufreq->tx.npacket) <= 0){
return(EINVAL);
}
ir->bulkxfer
= (struct fw_bulkxfer *)malloc(sizeof(struct fw_bulkxfer) * ibufreq->rx.nchunk, M_FW, M_WAITOK);
if(ir->bulkxfer == NULL){
return(ENOMEM);
}
it->bulkxfer
= (struct fw_bulkxfer *)malloc(sizeof(struct fw_bulkxfer) * ibufreq->tx.nchunk, M_FW, M_WAITOK);
if(it->bulkxfer == NULL){
return(ENOMEM);
}
if (ibufreq->rx.psize > 0) {
ibufreq->rx.psize = roundup2(ibufreq->rx.psize,
sizeof(u_int32_t));
ir->buf = fwdma_malloc_multiseg(
sc->fc, sizeof(u_int32_t),
ibufreq->rx.psize,
ibufreq->rx.nchunk * ibufreq->rx.npacket,
BUS_DMA_WAITOK);
if(ir->buf == NULL){
free(ir->bulkxfer, M_FW);
free(it->bulkxfer, M_FW);
ir->bulkxfer = NULL;
it->bulkxfer = NULL;
it->buf = NULL;
return(ENOMEM);
}
}
if (ibufreq->tx.psize > 0) {
ibufreq->tx.psize = roundup2(ibufreq->tx.psize,
sizeof(u_int32_t));
it->buf = fwdma_malloc_multiseg(
sc->fc, sizeof(u_int32_t),
ibufreq->tx.psize,
ibufreq->tx.nchunk * ibufreq->tx.npacket,
BUS_DMA_WAITOK);
if(it->buf == NULL){
free(ir->bulkxfer, M_FW);
free(it->bulkxfer, M_FW);
fwdma_free_multiseg(ir->buf);
ir->bulkxfer = NULL;
it->bulkxfer = NULL;
it->buf = NULL;
return(ENOMEM);
}
}
ir->bnchunk = ibufreq->rx.nchunk;
ir->bnpacket = ibufreq->rx.npacket;
ir->psize = (ibufreq->rx.psize + 3) & ~3;
ir->queued = 0;
it->bnchunk = ibufreq->tx.nchunk;
it->bnpacket = ibufreq->tx.npacket;
it->psize = (ibufreq->tx.psize + 3) & ~3;
it->queued = 0;
STAILQ_INIT(&ir->stvalid);
STAILQ_INIT(&ir->stfree);
STAILQ_INIT(&ir->stdma);
ir->stproc = NULL;
STAILQ_INIT(&it->stvalid);
STAILQ_INIT(&it->stfree);
STAILQ_INIT(&it->stdma);
it->stproc = NULL;
for(i = 0 ; i < sc->fc->ir[sub]->bnchunk; i++){
ir->bulkxfer[i].poffset = i * ir->bnpacket;
ir->bulkxfer[i].mbuf = NULL;
STAILQ_INSERT_TAIL(&ir->stfree,
&ir->bulkxfer[i], link);
}
for(i = 0 ; i < sc->fc->it[sub]->bnchunk; i++){
it->bulkxfer[i].poffset = i * it->bnpacket;
it->bulkxfer[i].mbuf = NULL;
STAILQ_INSERT_TAIL(&it->stfree,
&it->bulkxfer[i], link);
}
ir->flag &= ~FWXFERQ_MODEMASK;
ir->flag |= FWXFERQ_STREAM;
ir->flag |= FWXFERQ_EXTBUF;
it->flag &= ~FWXFERQ_MODEMASK;
it->flag |= FWXFERQ_STREAM;
it->flag |= FWXFERQ_EXTBUF;
err = 0;
break;
case FW_GSTBUF:
ibufreq->rx.nchunk = sc->fc->ir[sub]->bnchunk;
ibufreq->rx.npacket = sc->fc->ir[sub]->bnpacket;
ibufreq->rx.psize = sc->fc->ir[sub]->psize;
ibufreq->tx.nchunk = sc->fc->it[sub]->bnchunk;
ibufreq->tx.npacket = sc->fc->it[sub]->bnpacket;
ibufreq->tx.psize = sc->fc->it[sub]->psize;
break;
case FW_ASYREQ:
xfer = fw_xfer_alloc_buf(M_FWXFER, asyreq->req.len,
PAGE_SIZE /* XXX */);
if(xfer == NULL){
err = ENOMEM;
return err;
}
fp = &asyreq->pkt;
switch (asyreq->req.type) {
case FWASREQNODE:
xfer->dst = fp->mode.hdr.dst;
break;
case FWASREQEUI:
fwdev = fw_noderesolve_eui64(sc->fc,
&asyreq->req.dst.eui);
if (fwdev == NULL) {
device_printf(sc->fc->bdev,
"cannot find node\n");
err = EINVAL;
goto error;
}
xfer->dst = FWLOCALBUS | fwdev->dst;
fp->mode.hdr.dst = xfer->dst;
break;
case FWASRESTL:
/* XXX what's this? */
break;
case FWASREQSTREAM:
/* nothing to do */
break;
}
xfer->spd = asyreq->req.sped;
bcopy(fp, xfer->send.buf, xfer->send.len);
xfer->act.hand = fw_asy_callback;
err = fw_asyreq(sc->fc, sub, xfer);
if(err){
fw_xfer_free( xfer);
return err;
}
err = tsleep(xfer, FWPRI, "asyreq", hz);
if(err == 0){
if(asyreq->req.len >= xfer->recv.len){
asyreq->req.len = xfer->recv.len;
}else{
err = EINVAL;
}
bcopy(xfer->recv.buf, fp, asyreq->req.len);
}
error:
fw_xfer_free( xfer);
break;
case FW_IBUSRST:
sc->fc->ibr(sc->fc);
break;
case FW_CBINDADDR:
fwb = fw_bindlookup(sc->fc,
bindreq->start.hi, bindreq->start.lo);
if(fwb == NULL){
err = EINVAL;
break;
}
STAILQ_REMOVE(&sc->fc->binds, fwb, fw_bind, fclist);
STAILQ_REMOVE(&sc->fc->ir[sub]->binds, fwb, fw_bind, chlist);
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_NOWAIT);
if(fwb == NULL){
err = ENOMEM;
break;
}
fwb->start_hi = bindreq->start.hi;
fwb->start_lo = bindreq->start.lo;
fwb->addrlen = bindreq->len;
fwb->sub = sub;
fwb->act_type = FWACT_CH;
xfer = fw_xfer_alloc(M_FWXFER);
if(xfer == NULL){
err = ENOMEM;
return err;
}
xfer->fc = sc->fc;
s = splfw();
/* XXX broken. need multiple xfer */
STAILQ_INIT(&fwb->xferlist);
STAILQ_INSERT_TAIL(&fwb->xferlist, xfer, link);
splx(s);
err = fw_bindadd(sc->fc, fwb);
break;
case FW_GDEVLST:
i = len = 1;
/* myself */
devinfo = &fwdevlst->dev[0];
devinfo->dst = sc->fc->nodeid;
devinfo->status = 0; /* XXX */
devinfo->eui.hi = sc->fc->eui.hi;
devinfo->eui.lo = sc->fc->eui.lo;
STAILQ_FOREACH(fwdev, &sc->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:
bcopy(sc->fc->topology_map, data,
(sc->fc->topology_map->crc_len + 1) * 4);
break;
case FW_GCROM:
STAILQ_FOREACH(fwdev, &sc->fc->devices, link)
if (FW_EUI64_EQUAL(fwdev->eui, crom_buf->eui))
break;
if (fwdev == NULL) {
err = FWNODE_INVAL;
break;
}
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(&fwdev->csrrom[0], crom_buf->ptr, len);
break;
default:
sc->fc->ioctl (dev, cmd, data, flag, td);
break;
}
return err;
}
int
fw_poll(dev_t dev, int events, fw_proc *td)
{
int revents;
int tmp;
int unit = DEV2UNIT(dev);
int sub = DEV2DMACH(dev);
struct firewire_softc *sc;
if (DEV_FWMEM(dev))
return fwmem_poll(dev, events, td);
sc = devclass_get_softc(firewire_devclass, unit);
revents = 0;
tmp = POLLIN | POLLRDNORM;
if (events & tmp) {
if (STAILQ_FIRST(&sc->fc->ir[sub]->q) != NULL)
revents |= tmp;
else
selrecord(td, &sc->fc->ir[sub]->rsel);
}
tmp = POLLOUT | POLLWRNORM;
if (events & tmp) {
/* XXX should be fixed */
revents |= tmp;
}
return revents;
}
static int
#if __FreeBSD_version < 500102
fw_mmap (dev_t dev, vm_offset_t offset, int nproto)
#else
fw_mmap (dev_t dev, vm_offset_t offset, vm_paddr_t *paddr, int nproto)
#endif
{
struct firewire_softc *fc;
int unit = DEV2UNIT(dev);
if (DEV_FWMEM(dev))
#if __FreeBSD_version < 500102
return fwmem_mmap(dev, offset, nproto);
#else
return fwmem_mmap(dev, offset, paddr, nproto);
#endif
fc = devclass_get_softc(firewire_devclass, unit);
return EINVAL;
}