2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <linux/kernel.h>
26 #include <wl_export.h>
27 #include <wlc_event.h>
31 #include <wlc_mac80211.h>
36 /* Local prototypes */
37 static void wlc_timer_cb(void *arg);
39 /* Private data structures */
48 struct wl_timer *timer;
50 u8 event_inds_mask[broken_roundup(WLC_E_LAST, NBBY) / NBBY];
56 wlc_eventq_t *wlc_eventq_attach(wlc_pub_t *pub, struct wlc_info *wlc, void *wl,
61 eq = kzalloc(sizeof(wlc_eventq_t), GFP_ATOMIC);
70 eq->timer = wl_init_timer(eq->wl, wlc_timer_cb, eq, "eventq");
72 WL_ERROR(("wl%d: wlc_eventq_attach: timer failed\n",
81 int wlc_eventq_detach(wlc_eventq_t *eq)
83 /* Clean up pending events */
88 wl_del_timer(eq->wl, eq->timer);
91 wl_free_timer(eq->wl, eq->timer);
95 ASSERT(wlc_eventq_avail(eq) == false);
100 int wlc_eventq_down(wlc_eventq_t *eq)
103 if (eq->tpending && !eq->workpending) {
104 if (!wl_del_timer(eq->wl, eq->timer))
107 ASSERT(wlc_eventq_avail(eq) == true);
108 ASSERT(eq->workpending == false);
109 eq->workpending = true;
113 ASSERT(eq->workpending == true);
114 eq->workpending = false;
115 eq->tpending = false;
117 ASSERT(eq->workpending || wlc_eventq_avail(eq) == false);
122 wlc_event_t *wlc_event_alloc(wlc_eventq_t *eq)
126 e = kzalloc(sizeof(wlc_event_t), GFP_ATOMIC);
134 void wlc_event_free(wlc_eventq_t *eq, wlc_event_t *e)
136 ASSERT(e->data == NULL);
137 ASSERT(e->next == NULL);
141 void wlc_eventq_enq(wlc_eventq_t *eq, wlc_event_t *e)
143 ASSERT(e->next == NULL);
150 eq->head = eq->tail = e;
154 /* Use a zero-delay timer to trigger
155 * delayed processing of the event.
157 wl_add_timer(eq->wl, eq->timer, 0, 0);
161 wlc_event_t *wlc_eventq_deq(wlc_eventq_t *eq)
170 if (eq->head == NULL)
176 wlc_event_t *wlc_eventq_next(wlc_eventq_t *eq, wlc_event_t *e)
181 for (etmp = eq->head; etmp; etmp = etmp->next) {
185 ASSERT(etmp != NULL);
191 int wlc_eventq_cnt(wlc_eventq_t *eq)
196 for (etmp = eq->head; etmp; etmp = etmp->next)
202 bool wlc_eventq_avail(wlc_eventq_t *eq)
204 return (eq->head != NULL);
210 static void wlc_timer_cb(void *arg)
212 struct wlc_eventq *eq = (struct wlc_eventq *)arg;
214 ASSERT(eq->tpending == true);
215 ASSERT(wlc_eventq_avail(eq) == true);
216 ASSERT(eq->workpending == false);
217 eq->workpending = true;
222 ASSERT(wlc_eventq_avail(eq) == false);
223 ASSERT(eq->tpending == true);
224 eq->workpending = false;
225 eq->tpending = false;