diff options
Diffstat (limited to 'freebsd/sys/dev/rtwn/if_rtwn_task.c')
| -rw-r--r-- | freebsd/sys/dev/rtwn/if_rtwn_task.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/freebsd/sys/dev/rtwn/if_rtwn_task.c b/freebsd/sys/dev/rtwn/if_rtwn_task.c new file mode 100644 index 00000000..ecff85a5 --- /dev/null +++ b/freebsd/sys/dev/rtwn/if_rtwn_task.c @@ -0,0 +1,124 @@ +#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> + +#include <rtems/bsd/sys/param.h> +#include <rtems/bsd/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); +} |