1 /*
2  * This file is part of wl12xx
3  *
4  * Copyright (C) 2012 Texas Instruments. All rights reserved.
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * version 2 as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18  * 02110-1301 USA
19  *
20  */
21 
22 #include <net/genetlink.h>
23 #include "event.h"
24 #include "scan.h"
25 #include "../wlcore/cmd.h"
26 #include "../wlcore/debug.h"
27 #include "../wlcore/vendor_cmd.h"
28 
29 int wl18xx_wait_for_event(struct wl1271 *wl, enum wlcore_wait_event event,
30 			  bool *timeout)
31 {
32 	u32 local_event;
33 
34 	switch (event) {
35 	case WLCORE_EVENT_PEER_REMOVE_COMPLETE:
36 		local_event = PEER_REMOVE_COMPLETE_EVENT_ID;
37 		break;
38 
39 	case WLCORE_EVENT_DFS_CONFIG_COMPLETE:
40 		local_event = DFS_CHANNELS_CONFIG_COMPLETE_EVENT;
41 		break;
42 
43 	default:
44 		/* event not implemented */
45 		return 0;
46 	}
47 	return wlcore_cmd_wait_for_event_or_timeout(wl, local_event, timeout);
48 }
49 
50 static const char *wl18xx_radar_type_decode(u8 radar_type)
51 {
52 	switch (radar_type) {
53 	case RADAR_TYPE_REGULAR:
54 		return "REGULAR";
55 	case RADAR_TYPE_CHIRP:
56 		return "CHIRP";
57 	case RADAR_TYPE_NONE:
58 	default:
59 		return "N/A";
60 	}
61 }
62 
63 static int wlcore_smart_config_sync_event(struct wl1271 *wl, u8 sync_channel,
64 					  u8 sync_band)
65 {
66 	struct sk_buff *skb;
67 	enum ieee80211_band band;
68 	int freq;
69 
70 	if (sync_band == WLCORE_BAND_5GHZ)
71 		band = IEEE80211_BAND_5GHZ;
72 	else
73 		band = IEEE80211_BAND_2GHZ;
74 
75 	freq = ieee80211_channel_to_frequency(sync_channel, band);
76 
77 	wl1271_debug(DEBUG_EVENT,
78 		     "SMART_CONFIG_SYNC_EVENT_ID, freq: %d (chan: %d band %d)",
79 		     freq, sync_channel, sync_band);
80 	skb = cfg80211_vendor_event_alloc(wl->hw->wiphy, NULL, 20,
81 					  WLCORE_VENDOR_EVENT_SC_SYNC,
82 					  GFP_KERNEL);
83 
84 	if (nla_put_u32(skb, WLCORE_VENDOR_ATTR_FREQ, freq)) {
85 		kfree_skb(skb);
86 		return -EMSGSIZE;
87 	}
88 	cfg80211_vendor_event(skb, GFP_KERNEL);
89 	return 0;
90 }
91 
92 static int wlcore_smart_config_decode_event(struct wl1271 *wl,
93 					    u8 ssid_len, u8 *ssid,
94 					    u8 pwd_len, u8 *pwd)
95 {
96 	struct sk_buff *skb;
97 
98 	wl1271_debug(DEBUG_EVENT, "SMART_CONFIG_DECODE_EVENT_ID");
99 	wl1271_dump_ascii(DEBUG_EVENT, "SSID:", ssid, ssid_len);
100 
101 	skb = cfg80211_vendor_event_alloc(wl->hw->wiphy, NULL,
102 					  ssid_len + pwd_len + 20,
103 					  WLCORE_VENDOR_EVENT_SC_DECODE,
104 					  GFP_KERNEL);
105 
106 	if (nla_put(skb, WLCORE_VENDOR_ATTR_SSID, ssid_len, ssid) ||
107 	    nla_put(skb, WLCORE_VENDOR_ATTR_PSK, pwd_len, pwd)) {
108 		kfree_skb(skb);
109 		return -EMSGSIZE;
110 	}
111 	cfg80211_vendor_event(skb, GFP_KERNEL);
112 	return 0;
113 }
114 
115 int wl18xx_process_mailbox_events(struct wl1271 *wl)
116 {
117 	struct wl18xx_event_mailbox *mbox = wl->mbox;
118 	u32 vector;
119 
120 	vector = le32_to_cpu(mbox->events_vector);
121 	wl1271_debug(DEBUG_EVENT, "MBOX vector: 0x%x", vector);
122 
123 	if (vector & SCAN_COMPLETE_EVENT_ID) {
124 		wl1271_debug(DEBUG_EVENT, "scan results: %d",
125 			     mbox->number_of_scan_results);
126 
127 		if (wl->scan_wlvif)
128 			wl18xx_scan_completed(wl, wl->scan_wlvif);
129 	}
130 
131 	if (vector & RADAR_DETECTED_EVENT_ID) {
132 		wl1271_info("radar event: channel %d type %s",
133 			    mbox->radar_channel,
134 			    wl18xx_radar_type_decode(mbox->radar_type));
135 
136 		ieee80211_radar_detected(wl->hw);
137 	}
138 
139 	if (vector & PERIODIC_SCAN_REPORT_EVENT_ID) {
140 		wl1271_debug(DEBUG_EVENT,
141 			     "PERIODIC_SCAN_REPORT_EVENT (results %d)",
142 			     mbox->number_of_sched_scan_results);
143 
144 		wlcore_scan_sched_scan_results(wl);
145 	}
146 
147 	if (vector & PERIODIC_SCAN_COMPLETE_EVENT_ID)
148 		wlcore_event_sched_scan_completed(wl, 1);
149 
150 	if (vector & RSSI_SNR_TRIGGER_0_EVENT_ID)
151 		wlcore_event_rssi_trigger(wl, mbox->rssi_snr_trigger_metric);
152 
153 	if (vector & BA_SESSION_RX_CONSTRAINT_EVENT_ID)
154 		wlcore_event_ba_rx_constraint(wl,
155 				le16_to_cpu(mbox->rx_ba_role_id_bitmap),
156 				le16_to_cpu(mbox->rx_ba_allowed_bitmap));
157 
158 	if (vector & BSS_LOSS_EVENT_ID)
159 		wlcore_event_beacon_loss(wl,
160 					 le16_to_cpu(mbox->bss_loss_bitmap));
161 
162 	if (vector & CHANNEL_SWITCH_COMPLETE_EVENT_ID)
163 		wlcore_event_channel_switch(wl,
164 			le16_to_cpu(mbox->channel_switch_role_id_bitmap),
165 			true);
166 
167 	if (vector & DUMMY_PACKET_EVENT_ID)
168 		wlcore_event_dummy_packet(wl);
169 
170 	/*
171 	 * "TX retries exceeded" has a different meaning according to mode.
172 	 * In AP mode the offending station is disconnected.
173 	 */
174 	if (vector & MAX_TX_FAILURE_EVENT_ID)
175 		wlcore_event_max_tx_failure(wl,
176 				le32_to_cpu(mbox->tx_retry_exceeded_bitmap));
177 
178 	if (vector & INACTIVE_STA_EVENT_ID)
179 		wlcore_event_inactive_sta(wl,
180 				le32_to_cpu(mbox->inactive_sta_bitmap));
181 
182 	if (vector & REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID)
183 		wlcore_event_roc_complete(wl);
184 
185 	if (vector & SMART_CONFIG_SYNC_EVENT_ID)
186 		wlcore_smart_config_sync_event(wl, mbox->sc_sync_channel,
187 					       mbox->sc_sync_band);
188 
189 	if (vector & SMART_CONFIG_DECODE_EVENT_ID)
190 		wlcore_smart_config_decode_event(wl,
191 						 mbox->sc_ssid_len,
192 						 mbox->sc_ssid,
193 						 mbox->sc_pwd_len,
194 						 mbox->sc_pwd);
195 
196 	return 0;
197 }
198