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
 29int 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
 50static 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
 63static 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
 92static 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
115static void wlcore_event_time_sync(struct wl1271 *wl, u16 tsf_msb, u16 tsf_lsb)
116{
117	u32 clock;
118	/* convert the MSB+LSB to a u32 TSF value */
119	clock = (tsf_msb << 16) | tsf_lsb;
120	wl1271_info("TIME_SYNC_EVENT_ID: clock %u", clock);
121}
122
123int wl18xx_process_mailbox_events(struct wl1271 *wl)
124{
125	struct wl18xx_event_mailbox *mbox = wl->mbox;
126	u32 vector;
127
128	vector = le32_to_cpu(mbox->events_vector);
129	wl1271_debug(DEBUG_EVENT, "MBOX vector: 0x%x", vector);
130
131	if (vector & SCAN_COMPLETE_EVENT_ID) {
132		wl1271_debug(DEBUG_EVENT, "scan results: %d",
133			     mbox->number_of_scan_results);
134
135		if (wl->scan_wlvif)
136			wl18xx_scan_completed(wl, wl->scan_wlvif);
137	}
138
139	if (vector & TIME_SYNC_EVENT_ID)
140		wlcore_event_time_sync(wl,
141				mbox->time_sync_tsf_msb,
142				mbox->time_sync_tsf_lsb);
143
144	if (vector & RADAR_DETECTED_EVENT_ID) {
145		wl1271_info("radar event: channel %d type %s",
146			    mbox->radar_channel,
147			    wl18xx_radar_type_decode(mbox->radar_type));
148
149		if (!wl->radar_debug_mode)
150			ieee80211_radar_detected(wl->hw);
151	}
152
153	if (vector & PERIODIC_SCAN_REPORT_EVENT_ID) {
154		wl1271_debug(DEBUG_EVENT,
155			     "PERIODIC_SCAN_REPORT_EVENT (results %d)",
156			     mbox->number_of_sched_scan_results);
157
158		wlcore_scan_sched_scan_results(wl);
159	}
160
161	if (vector & PERIODIC_SCAN_COMPLETE_EVENT_ID)
162		wlcore_event_sched_scan_completed(wl, 1);
163
164	if (vector & RSSI_SNR_TRIGGER_0_EVENT_ID)
165		wlcore_event_rssi_trigger(wl, mbox->rssi_snr_trigger_metric);
166
167	if (vector & BA_SESSION_RX_CONSTRAINT_EVENT_ID)
168		wlcore_event_ba_rx_constraint(wl,
169				le16_to_cpu(mbox->rx_ba_role_id_bitmap),
170				le16_to_cpu(mbox->rx_ba_allowed_bitmap));
171
172	if (vector & BSS_LOSS_EVENT_ID)
173		wlcore_event_beacon_loss(wl,
174					 le16_to_cpu(mbox->bss_loss_bitmap));
175
176	if (vector & CHANNEL_SWITCH_COMPLETE_EVENT_ID)
177		wlcore_event_channel_switch(wl,
178			le16_to_cpu(mbox->channel_switch_role_id_bitmap),
179			true);
180
181	if (vector & DUMMY_PACKET_EVENT_ID)
182		wlcore_event_dummy_packet(wl);
183
184	/*
185	 * "TX retries exceeded" has a different meaning according to mode.
186	 * In AP mode the offending station is disconnected.
187	 */
188	if (vector & MAX_TX_FAILURE_EVENT_ID)
189		wlcore_event_max_tx_failure(wl,
190				le32_to_cpu(mbox->tx_retry_exceeded_bitmap));
191
192	if (vector & INACTIVE_STA_EVENT_ID)
193		wlcore_event_inactive_sta(wl,
194				le32_to_cpu(mbox->inactive_sta_bitmap));
195
196	if (vector & REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID)
197		wlcore_event_roc_complete(wl);
198
199	if (vector & SMART_CONFIG_SYNC_EVENT_ID)
200		wlcore_smart_config_sync_event(wl, mbox->sc_sync_channel,
201					       mbox->sc_sync_band);
202
203	if (vector & SMART_CONFIG_DECODE_EVENT_ID)
204		wlcore_smart_config_decode_event(wl,
205						 mbox->sc_ssid_len,
206						 mbox->sc_ssid,
207						 mbox->sc_pwd_len,
208						 mbox->sc_pwd);
209	if (vector & FW_LOGGER_INDICATION)
210		wlcore_event_fw_logger(wl);
211
212	return 0;
213}