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#include <machine/rtems-bsd-kernel-space.h>
/*-
* Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <rtems/bsd/local/opt_wlan.h>
#ifdef __rtems__
#define __LINUX_ERRNO_EXTENSIONS__
#endif /* __rtems__ */
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#include <sys/taskqueue.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <net/if.h>
#include <net/ethernet.h>
#include <net/if_media.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_radiotap.h>
#include <dev/rtwn/if_rtwnvar.h>
#include <dev/rtwn/if_rtwn_task.h>
static void
rtwn_cmdq_cb(void *arg, int pending)
{
struct rtwn_softc *sc = arg;
struct rtwn_cmdq *item;
/*
* Device must be powered on (via rtwn_power_on())
* before any command may be sent.
*/
RTWN_LOCK(sc);
if (!(sc->sc_flags & RTWN_RUNNING)) {
RTWN_UNLOCK(sc);
return;
}
RTWN_CMDQ_LOCK(sc);
while (sc->cmdq[sc->cmdq_first].func != NULL) {
item = &sc->cmdq[sc->cmdq_first];
sc->cmdq_first = (sc->cmdq_first + 1) % RTWN_CMDQ_SIZE;
RTWN_CMDQ_UNLOCK(sc);
item->func(sc, &item->data);
RTWN_CMDQ_LOCK(sc);
memset(item, 0, sizeof (*item));
}
RTWN_CMDQ_UNLOCK(sc);
RTWN_UNLOCK(sc);
}
void
rtwn_cmdq_init(struct rtwn_softc *sc)
{
RTWN_CMDQ_LOCK_INIT(sc);
TASK_INIT(&sc->cmdq_task, 0, rtwn_cmdq_cb, sc);
}
void
rtwn_cmdq_destroy(struct rtwn_softc *sc)
{
if (RTWN_CMDQ_LOCK_INITIALIZED(sc))
RTWN_CMDQ_LOCK_DESTROY(sc);
}
int
rtwn_cmd_sleepable(struct rtwn_softc *sc, const void *ptr, size_t len,
CMD_FUNC_PROTO)
{
struct ieee80211com *ic = &sc->sc_ic;
KASSERT(len <= sizeof(union sec_param), ("buffer overflow"));
RTWN_CMDQ_LOCK(sc);
if (sc->sc_detached) {
RTWN_CMDQ_UNLOCK(sc);
return (ESHUTDOWN);
}
if (sc->cmdq[sc->cmdq_last].func != NULL) {
device_printf(sc->sc_dev, "%s: cmdq overflow\n", __func__);
RTWN_CMDQ_UNLOCK(sc);
return (EAGAIN);
}
if (ptr != NULL)
memcpy(&sc->cmdq[sc->cmdq_last].data, ptr, len);
sc->cmdq[sc->cmdq_last].func = func;
sc->cmdq_last = (sc->cmdq_last + 1) % RTWN_CMDQ_SIZE;
RTWN_CMDQ_UNLOCK(sc);
ieee80211_runtask(ic, &sc->cmdq_task);
return (0);
}
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