wl1271: use workqueue provided by mac80211 instead of the default
[linux-2.6.git] / drivers / net / wireless / wl12xx / wl1271_event.c
1 /*
2  * This file is part of wl1271
3  *
4  * Copyright (C) 2008-2009 Nokia Corporation
5  *
6  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License
10  * version 2 as published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20  * 02110-1301 USA
21  *
22  */
23
24 #include "wl1271.h"
25 #include "wl1271_reg.h"
26 #include "wl1271_spi.h"
27 #include "wl1271_event.h"
28 #include "wl1271_ps.h"
29
30 static int wl1271_event_scan_complete(struct wl1271 *wl,
31                                       struct event_mailbox *mbox)
32 {
33         wl1271_debug(DEBUG_EVENT, "status: 0x%x",
34                      mbox->scheduled_scan_status);
35
36         if (wl->scanning) {
37                 mutex_unlock(&wl->mutex);
38                 ieee80211_scan_completed(wl->hw, false);
39                 mutex_lock(&wl->mutex);
40                 wl->scanning = false;
41         }
42
43         return 0;
44 }
45
46 static void wl1271_event_mbox_dump(struct event_mailbox *mbox)
47 {
48         wl1271_debug(DEBUG_EVENT, "MBOX DUMP:");
49         wl1271_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector);
50         wl1271_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
51 }
52
53 static int wl1271_event_process(struct wl1271 *wl, struct event_mailbox *mbox)
54 {
55         int ret;
56         u32 vector;
57
58         wl1271_event_mbox_dump(mbox);
59
60         vector = mbox->events_vector & ~(mbox->events_mask);
61         wl1271_debug(DEBUG_EVENT, "vector: 0x%x", vector);
62
63         if (vector & SCAN_COMPLETE_EVENT_ID) {
64                 ret = wl1271_event_scan_complete(wl, mbox);
65                 if (ret < 0)
66                         return ret;
67         }
68
69         if (vector & BSS_LOSE_EVENT_ID) {
70                 wl1271_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");
71
72                 if (wl->psm_requested && wl->psm) {
73                         ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE);
74                         if (ret < 0)
75                                 return ret;
76                 }
77         }
78
79         return 0;
80 }
81
82 int wl1271_event_unmask(struct wl1271 *wl)
83 {
84         int ret;
85
86         ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask));
87         if (ret < 0)
88                 return ret;
89
90         return 0;
91 }
92
93 void wl1271_event_mbox_config(struct wl1271 *wl)
94 {
95         wl->mbox_ptr[0] = wl1271_reg_read32(wl, REG_EVENT_MAILBOX_PTR);
96         wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox);
97
98         wl1271_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x",
99                      wl->mbox_ptr[0], wl->mbox_ptr[1]);
100 }
101
102 int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num)
103 {
104         struct event_mailbox mbox;
105         int ret;
106
107         wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
108
109         if (mbox_num > 1)
110                 return -EINVAL;
111
112         /* first we read the mbox descriptor */
113         wl1271_spi_mem_read(wl, wl->mbox_ptr[mbox_num], &mbox,
114                             sizeof(struct event_mailbox));
115
116         /* process the descriptor */
117         ret = wl1271_event_process(wl, &mbox);
118         if (ret < 0)
119                 return ret;
120
121         /* then we let the firmware know it can go on...*/
122         wl1271_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK);
123
124         return 0;
125 }