80211 power-save modes are handled automictically by HW but can be overridden here. Signed-off-by: Michael Nemanov <michael.nemanov@xxxxxx> --- drivers/net/wireless/ti/cc33xx/ps.c | 117 ++++++++++++++++++++++++++++ drivers/net/wireless/ti/cc33xx/ps.h | 16 ++++ 2 files changed, 133 insertions(+) create mode 100644 drivers/net/wireless/ti/cc33xx/ps.c create mode 100644 drivers/net/wireless/ti/cc33xx/ps.h diff --git a/drivers/net/wireless/ti/cc33xx/ps.c b/drivers/net/wireless/ti/cc33xx/ps.c new file mode 100644 index 000000000000..e708ef8d5f46 --- /dev/null +++ b/drivers/net/wireless/ti/cc33xx/ps.c @@ -0,0 +1,117 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2022-2024 Texas Instruments Incorporated - https://www.ti.com/ + */ + +#include "ps.h" +#include "tx.h" +#include "debug.h" + +int cc33xx_ps_set_mode(struct cc33xx *cc, struct cc33xx_vif *wlvif, + enum cc33xx_cmd_ps_mode_e mode) +{ + int ret; + u16 timeout = cc->conf.host_conf.conn.dynamic_ps_timeout; + + switch (mode) { + case STATION_AUTO_PS_MODE: + case STATION_POWER_SAVE_MODE: + cc33xx_debug(DEBUG_PSM, "entering psm (mode=%d,timeout=%u)", + mode, timeout); + + ret = cc33xx_cmd_ps_mode(cc, wlvif, mode, timeout); + if (ret < 0) + return ret; + + set_bit(WLVIF_FLAG_IN_PS, &wlvif->flags); + break; + + case STATION_ACTIVE_MODE: + cc33xx_debug(DEBUG_PSM, "leaving psm"); + + ret = cc33xx_cmd_ps_mode(cc, wlvif, mode, 0); + if (ret < 0) + return ret; + + clear_bit(WLVIF_FLAG_IN_PS, &wlvif->flags); + break; + + default: + cc33xx_warning("trying to set ps to unsupported mode %d", mode); + ret = -EINVAL; + } + + return ret; +} + +static void cc33xx_ps_filter_frames(struct cc33xx *cc, u8 hlid) +{ + int i; + struct sk_buff *skb; + struct ieee80211_tx_info *info; + unsigned long flags; + int filtered[NUM_TX_QUEUES]; + struct cc33xx_link *lnk = &cc->links[hlid]; + + /* filter all frames currently in the low level queues for this hlid */ + for (i = 0; i < NUM_TX_QUEUES; i++) { + filtered[i] = 0; + while ((skb = skb_dequeue(&lnk->tx_queue[i]))) { + filtered[i]++; + + if (WARN_ON(cc33xx_is_dummy_packet(cc, skb))) + continue; + + info = IEEE80211_SKB_CB(skb); + info->flags |= IEEE80211_TX_STAT_TX_FILTERED; + info->status.rates[0].idx = -1; + ieee80211_tx_status_ni(cc->hw, skb); + } + } + + spin_lock_irqsave(&cc->cc_lock, flags); + for (i = 0; i < NUM_TX_QUEUES; i++) { + cc->tx_queue_count[i] -= filtered[i]; + if (lnk->wlvif) + lnk->wlvif->tx_queue_count[i] -= filtered[i]; + } + + spin_unlock_irqrestore(&cc->cc_lock, flags); + cc33xx_handle_tx_low_watermark(cc); +} + +void cc33xx_ps_link_start(struct cc33xx *cc, struct cc33xx_vif *wlvif, + u8 hlid, bool clean_queues) +{ + struct ieee80211_sta *sta; + struct ieee80211_vif *vif = cc33xx_wlvif_to_vif(wlvif); + + if (WARN_ON_ONCE(wlvif->bss_type != BSS_TYPE_AP_BSS)) + return; + + if (!test_bit(hlid, wlvif->ap.sta_hlid_map) || + test_bit(hlid, &cc->ap_ps_map)) + return; + + cc33xx_debug(DEBUG_PSM, + "start mac80211 PSM on hlid %d pkts %d clean_queues %d", + hlid, cc->links[hlid].allocated_pkts, clean_queues); + + rcu_read_lock(); + sta = ieee80211_find_sta(vif, cc->links[hlid].addr); + if (!sta) { + cc33xx_error("could not find sta %pM for starting ps", + cc->links[hlid].addr); + rcu_read_unlock(); + return; + } + + ieee80211_sta_ps_transition_ni(sta, true); + rcu_read_unlock(); + + /* do we want to filter all frames from this link's queues? */ + if (clean_queues) + cc33xx_ps_filter_frames(cc, hlid); + + __set_bit(hlid, &cc->ap_ps_map); +} diff --git a/drivers/net/wireless/ti/cc33xx/ps.h b/drivers/net/wireless/ti/cc33xx/ps.h new file mode 100644 index 000000000000..47f65b684b52 --- /dev/null +++ b/drivers/net/wireless/ti/cc33xx/ps.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0-only + * + * Copyright (C) 2022-2024 Texas Instruments Incorporated - https://www.ti.com/ + */ + +#ifndef __PS_H__ +#define __PS_H__ + +#include "acx.h" + +int cc33xx_ps_set_mode(struct cc33xx *cc, struct cc33xx_vif *wlvif, + enum cc33xx_cmd_ps_mode_e mode); +void cc33xx_ps_link_start(struct cc33xx *cc, struct cc33xx_vif *wlvif, + u8 hlid, bool clean_queues); + +#endif /* __PS_H__ */ -- 2.34.1
