6cf1ffe998
plist-based messages and to eliminate looping previously required to receive a plist from the kernel: - prop_dictionary_copyin_ioctl() and prop_dictionary_copyout_ioctl() now take the cmd argument rather than the file open flag. The read-ness or write-ness of an ioctl command is checked by these routines to ensure that information is being passed to/from the userland component properly. - prop_dictionary_copyout_ioctl() now allocates the memory for the XML plist on behalf of the userland component by way of uvm_mmap(). The XML plist is copied out to the newly-mapped anonymous region, and the pointer returned via the plistref. - prop_dictionary_recv_ioctl() is responsible for munmap()'ing the region after parsing the XML plist into internal represenatation. - A new prop_dictionary_sendrecv_ioctl() is added, allowing user space code to send a dictionary to the kernel and receive one back as a reply. Update users of prop_kern for the API changes (Bluetooth). This constitutes an ABI / protocol change -- but this will also be put into NetBSD 4.0 so that the first proplib release will implement the new scheme.
267 lines
6.7 KiB
C
267 lines
6.7 KiB
C
/* $NetBSD: bthub.c,v 1.4 2006/09/22 04:20:24 thorpej Exp $ */
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/*-
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* Copyright (c) 2006 Itronix Inc.
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* All rights reserved.
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*
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* Written by Iain Hibbert for Itronix Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of Itronix Inc. may not be used to endorse
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* or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: bthub.c,v 1.4 2006/09/22 04:20:24 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/fcntl.h>
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#include <sys/kernel.h>
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#include <sys/queue.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <prop/proplib.h>
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#include <netbt/bluetooth.h>
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#include <dev/bluetooth/btdev.h>
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#include "ioconf.h"
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/*****************************************************************************
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*
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* Bluetooth Device Hub
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*/
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struct bthub_softc {
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struct device sc_dev;
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LIST_HEAD(,btdev) sc_list;
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};
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/* autoconf(9) glue */
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static int bthub_match(struct device *, struct cfdata *, void *);
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static void bthub_attach(struct device *, struct device *, void *);
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static int bthub_detach(struct device *, int);
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CFATTACH_DECL(bthub, sizeof(struct bthub_softc),
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bthub_match, bthub_attach, bthub_detach, NULL);
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/* control file */
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dev_type_ioctl(bthubioctl);
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const struct cdevsw bthub_cdevsw = {
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nullopen, nullclose, noread, nowrite, bthubioctl,
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nostop, notty, nopoll, nommap, nokqfilter,
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};
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/* bthub functions */
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static int bthub_print(void *, const char *);
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static int bthub_pioctl(dev_t, unsigned long, prop_dictionary_t, int, struct lwp *);
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/*****************************************************************************
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*
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* bthub autoconf(9) routines
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*
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* A Hub is attached to each Bluetooth Controller as it is enabled
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*/
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static int
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bthub_match(struct device *self, struct cfdata *cfdata, void *arg)
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{
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return 1;
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}
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static void
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bthub_attach(struct device *parent, struct device *self, void *aux)
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{
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struct bthub_softc *sc = (struct bthub_softc *)self;
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bdaddr_t *addr = aux;
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prop_dictionary_t dict;
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prop_object_t obj;
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LIST_INIT(&sc->sc_list);
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dict = device_properties(self);
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obj = prop_data_create_data(addr, sizeof(*addr));
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prop_dictionary_set(dict, BTDEVladdr, obj);
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prop_object_release(obj);
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aprint_verbose(" %s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
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BTDEVladdr,
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addr->b[5], addr->b[4], addr->b[3],
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addr->b[2], addr->b[1], addr->b[0]);
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aprint_normal("\n");
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}
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static int
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bthub_detach(struct device *self, int flags)
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{
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struct bthub_softc *sc = (struct bthub_softc *)self;
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struct btdev *dev;
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int err;
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while (!LIST_EMPTY(&sc->sc_list)) {
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dev = LIST_FIRST(&sc->sc_list);
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LIST_REMOVE(dev, sc_next);
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err = config_detach((struct device *)dev, flags);
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if (err && (flags & DETACH_FORCE) == 0) {
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LIST_INSERT_HEAD(&sc->sc_list, dev, sc_next);
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return err;
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}
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}
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return 0;
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}
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/*****************************************************************************
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*
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* bthub access functions to control device
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*/
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int
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bthubioctl(dev_t devno, unsigned long cmd, caddr_t data, int flag, struct lwp *l)
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{
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prop_dictionary_t dict;
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int err;
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switch(cmd) {
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case BTDEV_ATTACH:
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case BTDEV_DETACH:
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/* load dictionary */
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err = prop_dictionary_copyin_ioctl((const struct plistref *)data, cmd, &dict);
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if (err == 0) {
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err = bthub_pioctl(devno, cmd, dict, flag, l);
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prop_object_release(dict);
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}
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break;
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default:
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err = EPASSTHROUGH;
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break;
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}
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return err;
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}
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static int
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bthub_pioctl(dev_t devno, unsigned long cmd, prop_dictionary_t dict, int flag, struct lwp *l)
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{
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struct bthub_softc *sc;
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struct btdev *dev;
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prop_object_t obj;
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int unit;
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/* validate device type */
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obj = prop_dictionary_get(dict, BTDEVtype);
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if (prop_object_type(obj) != PROP_TYPE_STRING)
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return EINVAL;
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/* validate local address */
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obj = prop_dictionary_get(dict, BTDEVladdr);
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if (prop_data_size(obj) != sizeof(bdaddr_t))
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return EINVAL;
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/* locate the relevant bthub */
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for (unit = 0 ; ; unit++) {
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if (unit == bthub_cd.cd_ndevs)
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return ENXIO;
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sc = (struct bthub_softc *)bthub_cd.cd_devs[unit];
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if (sc == NULL)
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continue;
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if (prop_data_equals(obj, prop_dictionary_get(device_properties(&sc->sc_dev), BTDEVladdr)))
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break;
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}
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/* validate remote address */
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obj = prop_dictionary_get(dict, BTDEVraddr);
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if (prop_data_size(obj) != sizeof(bdaddr_t)
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|| bdaddr_any(prop_data_data_nocopy(obj)))
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return EINVAL;
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/* check for existing child device */
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LIST_FOREACH(dev, &sc->sc_list, sc_next) {
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if ((*dev->sc_identify)(dev, dict))
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break;
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}
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switch (cmd) {
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case BTDEV_ATTACH: /* attach BTDEV */
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if (dev != NULL)
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return EADDRINUSE;
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dev = (struct btdev *)config_found((struct device *)sc,
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dict, bthub_print);
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if (dev == NULL)
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return ENXIO;
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KASSERT(dev->sc_identify != NULL);
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LIST_INSERT_HEAD(&sc->sc_list, dev, sc_next);
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break;
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case BTDEV_DETACH: /* detach BTDEV */
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if (dev == NULL)
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return ENXIO;
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LIST_REMOVE(dev, sc_next);
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config_detach((struct device *)dev, DETACH_FORCE);
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break;
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}
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return 0;
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}
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static int
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bthub_print(void *aux, const char *pnp)
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{
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prop_dictionary_t dict = aux;
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prop_object_t obj;
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const bdaddr_t *raddr;
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if (pnp != NULL) {
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obj = prop_dictionary_get(dict, BTDEVtype);
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aprint_normal("%s: %s '%s',", pnp, BTDEVtype,
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prop_string_cstring_nocopy(obj));
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}
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obj = prop_dictionary_get(dict, BTDEVraddr);
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raddr = prop_data_data_nocopy(obj);
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aprint_verbose(" %s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
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BTDEVraddr,
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raddr->b[5], raddr->b[4], raddr->b[3],
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raddr->b[2], raddr->b[1], raddr->b[0]);
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return UNCONF;
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}
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