1 // SPDX-License-Identifier: GPL-2.0-only
3 * This file is part of wl1271
5 * Copyright (C) 2008-2009 Nokia Corporation
7 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
15 int wl1271_ps_set_mode(struct wl1271 *wl, struct wl12xx_vif *wlvif,
16 enum wl1271_cmd_ps_mode mode)
19 u16 timeout = wl->conf.conn.dynamic_ps_timeout;
22 case STATION_AUTO_PS_MODE:
23 case STATION_POWER_SAVE_MODE:
24 wl1271_debug(DEBUG_PSM, "entering psm (mode=%d,timeout=%u)",
27 ret = wl1271_acx_wake_up_conditions(wl, wlvif,
28 wl->conf.conn.wake_up_event,
29 wl->conf.conn.listen_interval);
31 wl1271_error("couldn't set wake up conditions");
35 ret = wl1271_cmd_ps_mode(wl, wlvif, mode, timeout);
39 set_bit(WLVIF_FLAG_IN_PS, &wlvif->flags);
42 * enable beacon early termination.
43 * Not relevant for 5GHz and for high rates.
45 if ((wlvif->band == NL80211_BAND_2GHZ) &&
46 (wlvif->basic_rate < CONF_HW_BIT_RATE_9MBPS)) {
47 ret = wl1271_acx_bet_enable(wl, wlvif, true);
52 case STATION_ACTIVE_MODE:
53 wl1271_debug(DEBUG_PSM, "leaving psm");
55 /* disable beacon early termination */
56 if ((wlvif->band == NL80211_BAND_2GHZ) &&
57 (wlvif->basic_rate < CONF_HW_BIT_RATE_9MBPS)) {
58 ret = wl1271_acx_bet_enable(wl, wlvif, false);
63 ret = wl1271_cmd_ps_mode(wl, wlvif, mode, 0);
67 clear_bit(WLVIF_FLAG_IN_PS, &wlvif->flags);
70 wl1271_warning("trying to set ps to unsupported mode %d", mode);
77 static void wl1271_ps_filter_frames(struct wl1271 *wl, u8 hlid)
81 struct ieee80211_tx_info *info;
83 int filtered[NUM_TX_QUEUES];
84 struct wl1271_link *lnk = &wl->links[hlid];
86 /* filter all frames currently in the low level queues for this hlid */
87 for (i = 0; i < NUM_TX_QUEUES; i++) {
89 while ((skb = skb_dequeue(&lnk->tx_queue[i]))) {
92 if (WARN_ON(wl12xx_is_dummy_packet(wl, skb)))
95 info = IEEE80211_SKB_CB(skb);
96 info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
97 info->status.rates[0].idx = -1;
98 ieee80211_tx_status_ni(wl->hw, skb);
102 spin_lock_irqsave(&wl->wl_lock, flags);
103 for (i = 0; i < NUM_TX_QUEUES; i++) {
104 wl->tx_queue_count[i] -= filtered[i];
106 lnk->wlvif->tx_queue_count[i] -= filtered[i];
108 spin_unlock_irqrestore(&wl->wl_lock, flags);
110 wl1271_handle_tx_low_watermark(wl);
113 void wl12xx_ps_link_start(struct wl1271 *wl, struct wl12xx_vif *wlvif,
114 u8 hlid, bool clean_queues)
116 struct ieee80211_sta *sta;
117 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
119 if (WARN_ON_ONCE(wlvif->bss_type != BSS_TYPE_AP_BSS))
122 if (!test_bit(hlid, wlvif->ap.sta_hlid_map) ||
123 test_bit(hlid, &wl->ap_ps_map))
126 wl1271_debug(DEBUG_PSM, "start mac80211 PSM on hlid %d pkts %d "
127 "clean_queues %d", hlid, wl->links[hlid].allocated_pkts,
131 sta = ieee80211_find_sta(vif, wl->links[hlid].addr);
133 wl1271_error("could not find sta %pM for starting ps",
134 wl->links[hlid].addr);
139 ieee80211_sta_ps_transition_ni(sta, true);
142 /* do we want to filter all frames from this link's queues? */
144 wl1271_ps_filter_frames(wl, hlid);
146 __set_bit(hlid, &wl->ap_ps_map);
149 void wl12xx_ps_link_end(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 hlid)
151 struct ieee80211_sta *sta;
152 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
154 if (!test_bit(hlid, &wl->ap_ps_map))
157 wl1271_debug(DEBUG_PSM, "end mac80211 PSM on hlid %d", hlid);
159 __clear_bit(hlid, &wl->ap_ps_map);
162 sta = ieee80211_find_sta(vif, wl->links[hlid].addr);
164 wl1271_error("could not find sta %pM for ending ps",
165 wl->links[hlid].addr);
169 ieee80211_sta_ps_transition_ni(sta, false);