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/* $OpenBSD: bthub.c,v 1.5 2010/08/29 15:12:28 jasper Exp $ */
/*
* Copyright (c) 2007 Uwe Stuehler <uwe@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <sys/vnode.h>
#include <netbt/bluetooth.h>
#include <dev/bluetooth/btdev.h>
struct bthub_softc {
struct device sc_dev;
int sc_open;
bdaddr_t sc_laddr;
LIST_HEAD(, btdev) sc_list;
};
int bthub_match(struct device *, void *, void *);
void bthub_attach(struct device *, struct device *, void *);
int bthub_detach(struct device *, int);
int bthub_print(void *, const char *);
int bthub_devioctl(dev_t, u_long, struct btdev_attach_args *);
struct cfattach bthub_ca = {
sizeof(struct bthub_softc), bthub_match, bthub_attach, bthub_detach
};
struct cfdriver bthub_cd = {
NULL, "bthub", DV_DULL
};
int
bthub_match(struct device *parent, void *match, void *aux)
{
return (1);
}
void
bthub_attach(struct device *parent, struct device *self, void *aux)
{
struct bthub_softc *sc = (struct bthub_softc *)self;
bdaddr_t *addr = aux;
sc->sc_open = 0;
bdaddr_copy(&sc->sc_laddr, addr);
printf(" %02x:%02x:%02x:%02x:%02x:%02x\n",
addr->b[5], addr->b[4], addr->b[3],
addr->b[2], addr->b[1], addr->b[0]);
}
int
bthub_detach(struct device *self, int flags)
{
struct bthub_softc *sc = (struct bthub_softc *)self;
struct btdev *btdev;
int maj, mn;
int err;
/* Locate the major number */
for (maj = 0; maj < nchrdev; maj++)
if (cdevsw[maj].d_open == bthubopen)
break;
/* Nuke the vnodes for any open instances (calls close) */
mn = self->dv_unit;
vdevgone(maj, mn, mn, VCHR);
/* Detach all child devices. */
while (!LIST_EMPTY(&sc->sc_list)) {
btdev = LIST_FIRST(&sc->sc_list);
LIST_REMOVE(btdev, sc_next);
err = config_detach(&btdev->sc_dev, flags);
if (err && (flags & DETACH_FORCE) == 0) {
LIST_INSERT_HEAD(&sc->sc_list, btdev, sc_next);
return err;
}
}
return (0);
}
int
bthub_print(void *aux, const char *parentname)
{
struct btdev_attach_args *bd = aux;
bdaddr_t *raddr = &bd->bd_raddr;
if (parentname != NULL)
return QUIET;
printf(" %02x:%02x:%02x:%02x:%02x:%02x",
raddr->b[5], raddr->b[4], raddr->b[3], raddr->b[2],
raddr->b[1], raddr->b[0]);
return QUIET;
}
int
bthubopen(dev_t dev, int flag, int mode, struct proc *p)
{
struct device *dv;
struct bthub_softc *sc;
dv = device_lookup(&bthub_cd, minor(dev));
if (dv == NULL)
return (ENXIO);
sc = (struct bthub_softc *)dv;
if (sc->sc_open) {
device_unref(dv);
return (EBUSY);
}
sc->sc_open = 1;
device_unref(dv);
return (0);
}
int
bthubclose(dev_t dev, int flag, int mode, struct proc *p)
{
struct device *dv;
struct bthub_softc *sc;
dv = device_lookup(&bthub_cd, minor(dev));
sc = (struct bthub_softc *)dv;
sc->sc_open = 0;
device_unref(dv);
return (0);
}
int
bthubioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
{
struct btdev_attach_args *bd;
int err;
switch (cmd) {
case BTDEV_ATTACH:
case BTDEV_DETACH:
if ((flag & FWRITE) == 0)
return (EACCES);
default:
break;
}
switch (cmd) {
case BTDEV_ATTACH:
case BTDEV_DETACH:
bd = (struct btdev_attach_args *)data;
err = bthub_devioctl(dev, cmd, bd);
break;
default:
err = ENOTTY;
}
return err;
}
int
bthub_devioctl(dev_t dev, u_long cmd, struct btdev_attach_args *bd)
{
struct device *dv;
struct bthub_softc *sc;
struct btdev *btdev;
int unit;
/* Locate the relevant bthub. */
for (unit = 0; unit < bthub_cd.cd_ndevs; unit++) {
if ((dv = bthub_cd.cd_devs[unit]) == NULL)
continue;
sc = (struct bthub_softc *)dv;
if (bdaddr_same(&sc->sc_laddr, &bd->bd_laddr))
break;
}
if (unit == bthub_cd.cd_ndevs)
return (ENXIO);
/* Locate matching child device, if any. */
LIST_FOREACH(btdev, &sc->sc_list, sc_next) {
if (!bdaddr_same(&btdev->sc_addr, &bd->bd_raddr))
continue;
if (btdev->sc_type != bd->bd_type)
continue;
break;
}
switch (cmd) {
case BTDEV_ATTACH:
if (btdev != NULL)
return EADDRINUSE;
dv = config_found(&sc->sc_dev, bd, bthub_print);
if (dv == NULL)
return ENXIO;
btdev = (struct btdev *)dv;
bdaddr_copy(&btdev->sc_addr, &bd->bd_raddr);
btdev->sc_type = bd->bd_type;
LIST_INSERT_HEAD(&sc->sc_list, btdev, sc_next);
break;
case BTDEV_DETACH:
if (btdev == NULL)
return ENXIO;
LIST_REMOVE(btdev, sc_next);
config_detach(&btdev->sc_dev, DETACH_FORCE);
break;
}
return 0;
}
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