1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* Copyright(c) 2019-2020 Realtek Corporation 3 */ 4 5 #include "chan.h" 6 #include "coex.h" 7 #include "core.h" 8 #include "debug.h" 9 #include "fw.h" 10 #include "mac.h" 11 #include "ps.h" 12 #include "reg.h" 13 #include "util.h" 14 15 static int rtw89_fw_leave_lps_check(struct rtw89_dev *rtwdev, u8 macid) 16 { 17 const struct rtw89_mac_gen_def *mac = rtwdev->chip->mac_def; 18 u32 pwr_en_bit = 0xE; 19 u32 chk_msk = pwr_en_bit << (4 * macid); 20 u32 polling; 21 int ret; 22 23 ret = read_poll_timeout_atomic(rtw89_read32_mask, polling, !polling, 24 1000, 50000, false, rtwdev, 25 mac->ps_status, chk_msk); 26 if (ret) { 27 rtw89_info(rtwdev, "rtw89: failed to leave lps state\n"); 28 return -EBUSY; 29 } 30 31 return 0; 32 } 33 34 static void rtw89_ps_power_mode_change_with_hci(struct rtw89_dev *rtwdev, 35 bool enter) 36 { 37 ieee80211_stop_queues(rtwdev->hw); 38 rtwdev->hci.paused = true; 39 flush_work(&rtwdev->txq_work); 40 ieee80211_wake_queues(rtwdev->hw); 41 42 rtw89_hci_pause(rtwdev, true); 43 rtw89_mac_power_mode_change(rtwdev, enter); 44 rtw89_hci_switch_mode(rtwdev, enter); 45 rtw89_hci_pause(rtwdev, false); 46 47 rtwdev->hci.paused = false; 48 49 if (!enter) { 50 local_bh_disable(); 51 napi_schedule(&rtwdev->napi); 52 local_bh_enable(); 53 } 54 } 55 56 static void rtw89_ps_power_mode_change(struct rtw89_dev *rtwdev, bool enter) 57 { 58 if (rtwdev->chip->low_power_hci_modes & BIT(rtwdev->ps_mode) && 59 !test_bit(RTW89_FLAG_WOWLAN, rtwdev->flags)) 60 rtw89_ps_power_mode_change_with_hci(rtwdev, enter); 61 else 62 rtw89_mac_power_mode_change(rtwdev, enter); 63 } 64 65 void __rtw89_enter_ps_mode(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif) 66 { 67 if (rtwvif->wifi_role == RTW89_WIFI_ROLE_P2P_CLIENT) 68 return; 69 70 if (!rtwdev->ps_mode) 71 return; 72 73 if (test_and_set_bit(RTW89_FLAG_LOW_POWER_MODE, rtwdev->flags)) 74 return; 75 76 rtw89_ps_power_mode_change(rtwdev, true); 77 } 78 79 void __rtw89_leave_ps_mode(struct rtw89_dev *rtwdev) 80 { 81 if (!rtwdev->ps_mode) 82 return; 83 84 if (test_and_clear_bit(RTW89_FLAG_LOW_POWER_MODE, rtwdev->flags)) 85 rtw89_ps_power_mode_change(rtwdev, false); 86 } 87 88 static void __rtw89_enter_lps(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif) 89 { 90 struct rtw89_lps_parm lps_param = { 91 .macid = rtwvif->mac_id, 92 .psmode = RTW89_MAC_AX_PS_MODE_LEGACY, 93 .lastrpwm = RTW89_LAST_RPWM_PS, 94 }; 95 96 rtw89_btc_ntfy_radio_state(rtwdev, BTC_RFCTRL_FW_CTRL); 97 rtw89_fw_h2c_lps_parm(rtwdev, &lps_param); 98 rtw89_fw_h2c_lps_ch_info(rtwdev, rtwvif); 99 } 100 101 static void __rtw89_leave_lps(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif) 102 { 103 struct rtw89_lps_parm lps_param = { 104 .macid = rtwvif->mac_id, 105 .psmode = RTW89_MAC_AX_PS_MODE_ACTIVE, 106 .lastrpwm = RTW89_LAST_RPWM_ACTIVE, 107 }; 108 109 rtw89_fw_h2c_lps_parm(rtwdev, &lps_param); 110 rtw89_fw_leave_lps_check(rtwdev, 0); 111 rtw89_btc_ntfy_radio_state(rtwdev, BTC_RFCTRL_WL_ON); 112 rtw89_chip_digital_pwr_comp(rtwdev, rtwvif->phy_idx); 113 } 114 115 void rtw89_leave_ps_mode(struct rtw89_dev *rtwdev) 116 { 117 lockdep_assert_held(&rtwdev->mutex); 118 119 __rtw89_leave_ps_mode(rtwdev); 120 } 121 122 void rtw89_enter_lps(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif, 123 bool ps_mode) 124 { 125 lockdep_assert_held(&rtwdev->mutex); 126 127 if (test_and_set_bit(RTW89_FLAG_LEISURE_PS, rtwdev->flags)) 128 return; 129 130 __rtw89_enter_lps(rtwdev, rtwvif); 131 if (ps_mode) 132 __rtw89_enter_ps_mode(rtwdev, rtwvif); 133 } 134 135 static void rtw89_leave_lps_vif(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif) 136 { 137 if (rtwvif->wifi_role != RTW89_WIFI_ROLE_STATION && 138 rtwvif->wifi_role != RTW89_WIFI_ROLE_P2P_CLIENT) 139 return; 140 141 __rtw89_leave_lps(rtwdev, rtwvif); 142 } 143 144 void rtw89_leave_lps(struct rtw89_dev *rtwdev) 145 { 146 struct rtw89_vif *rtwvif; 147 148 lockdep_assert_held(&rtwdev->mutex); 149 150 if (!test_and_clear_bit(RTW89_FLAG_LEISURE_PS, rtwdev->flags)) 151 return; 152 153 __rtw89_leave_ps_mode(rtwdev); 154 155 rtw89_for_each_rtwvif(rtwdev, rtwvif) 156 rtw89_leave_lps_vif(rtwdev, rtwvif); 157 } 158 159 void rtw89_enter_ips(struct rtw89_dev *rtwdev) 160 { 161 struct rtw89_vif *rtwvif; 162 163 set_bit(RTW89_FLAG_INACTIVE_PS, rtwdev->flags); 164 165 if (!test_bit(RTW89_FLAG_POWERON, rtwdev->flags)) 166 return; 167 168 rtw89_for_each_rtwvif(rtwdev, rtwvif) 169 rtw89_mac_vif_deinit(rtwdev, rtwvif); 170 171 rtw89_core_stop(rtwdev); 172 } 173 174 void rtw89_leave_ips(struct rtw89_dev *rtwdev) 175 { 176 struct rtw89_vif *rtwvif; 177 int ret; 178 179 if (test_bit(RTW89_FLAG_POWERON, rtwdev->flags)) 180 return; 181 182 ret = rtw89_core_start(rtwdev); 183 if (ret) 184 rtw89_err(rtwdev, "failed to leave idle state\n"); 185 186 rtw89_set_channel(rtwdev); 187 188 rtw89_for_each_rtwvif(rtwdev, rtwvif) 189 rtw89_mac_vif_init(rtwdev, rtwvif); 190 191 clear_bit(RTW89_FLAG_INACTIVE_PS, rtwdev->flags); 192 } 193 194 void rtw89_set_coex_ctrl_lps(struct rtw89_dev *rtwdev, bool btc_ctrl) 195 { 196 if (btc_ctrl) 197 rtw89_leave_lps(rtwdev); 198 } 199 200 static void rtw89_tsf32_toggle(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif, 201 enum rtw89_p2pps_action act) 202 { 203 if (act == RTW89_P2P_ACT_UPDATE || act == RTW89_P2P_ACT_REMOVE) 204 return; 205 206 if (act == RTW89_P2P_ACT_INIT) 207 rtw89_fw_h2c_tsf32_toggle(rtwdev, rtwvif, true); 208 else if (act == RTW89_P2P_ACT_TERMINATE) 209 rtw89_fw_h2c_tsf32_toggle(rtwdev, rtwvif, false); 210 } 211 212 static void rtw89_p2p_disable_all_noa(struct rtw89_dev *rtwdev, 213 struct ieee80211_vif *vif) 214 { 215 struct rtw89_vif *rtwvif = (struct rtw89_vif *)vif->drv_priv; 216 enum rtw89_p2pps_action act; 217 u8 noa_id; 218 219 if (rtwvif->last_noa_nr == 0) 220 return; 221 222 for (noa_id = 0; noa_id < rtwvif->last_noa_nr; noa_id++) { 223 if (noa_id == rtwvif->last_noa_nr - 1) 224 act = RTW89_P2P_ACT_TERMINATE; 225 else 226 act = RTW89_P2P_ACT_REMOVE; 227 rtw89_tsf32_toggle(rtwdev, rtwvif, act); 228 rtw89_fw_h2c_p2p_act(rtwdev, vif, NULL, act, noa_id); 229 } 230 } 231 232 static void rtw89_p2p_update_noa(struct rtw89_dev *rtwdev, 233 struct ieee80211_vif *vif) 234 { 235 struct rtw89_vif *rtwvif = (struct rtw89_vif *)vif->drv_priv; 236 struct ieee80211_p2p_noa_desc *desc; 237 enum rtw89_p2pps_action act; 238 u8 noa_id; 239 240 for (noa_id = 0; noa_id < RTW89_P2P_MAX_NOA_NUM; noa_id++) { 241 desc = &vif->bss_conf.p2p_noa_attr.desc[noa_id]; 242 if (!desc->count || !desc->duration) 243 break; 244 245 if (noa_id == 0) 246 act = RTW89_P2P_ACT_INIT; 247 else 248 act = RTW89_P2P_ACT_UPDATE; 249 rtw89_tsf32_toggle(rtwdev, rtwvif, act); 250 rtw89_fw_h2c_p2p_act(rtwdev, vif, desc, act, noa_id); 251 } 252 rtwvif->last_noa_nr = noa_id; 253 } 254 255 void rtw89_process_p2p_ps(struct rtw89_dev *rtwdev, struct ieee80211_vif *vif) 256 { 257 rtw89_p2p_disable_all_noa(rtwdev, vif); 258 rtw89_p2p_update_noa(rtwdev, vif); 259 } 260 261 void rtw89_recalc_lps(struct rtw89_dev *rtwdev) 262 { 263 struct ieee80211_vif *vif, *found_vif = NULL; 264 struct rtw89_vif *rtwvif; 265 enum rtw89_entity_mode mode; 266 int count = 0; 267 268 mode = rtw89_get_entity_mode(rtwdev); 269 if (mode == RTW89_ENTITY_MODE_MCC) 270 goto disable_lps; 271 272 rtw89_for_each_rtwvif(rtwdev, rtwvif) { 273 vif = rtwvif_to_vif(rtwvif); 274 275 if (vif->type != NL80211_IFTYPE_STATION) { 276 count = 0; 277 break; 278 } 279 280 count++; 281 found_vif = vif; 282 } 283 284 if (count == 1 && found_vif->cfg.ps) { 285 rtwdev->lps_enabled = true; 286 return; 287 } 288 289 disable_lps: 290 rtw89_leave_lps(rtwdev); 291 rtwdev->lps_enabled = false; 292 } 293 294 void rtw89_p2p_noa_renew(struct rtw89_vif *rtwvif) 295 { 296 struct rtw89_p2p_noa_setter *setter = &rtwvif->p2p_noa; 297 struct rtw89_p2p_noa_ie *ie = &setter->ie; 298 struct rtw89_p2p_ie_head *p2p_head = &ie->p2p_head; 299 struct rtw89_noa_attr_head *noa_head = &ie->noa_head; 300 301 if (setter->noa_count) { 302 setter->noa_index++; 303 setter->noa_count = 0; 304 } 305 306 memset(ie, 0, sizeof(*ie)); 307 308 p2p_head->eid = WLAN_EID_VENDOR_SPECIFIC; 309 p2p_head->ie_len = 4 + sizeof(*noa_head); 310 p2p_head->oui[0] = (WLAN_OUI_WFA >> 16) & 0xff; 311 p2p_head->oui[1] = (WLAN_OUI_WFA >> 8) & 0xff; 312 p2p_head->oui[2] = (WLAN_OUI_WFA >> 0) & 0xff; 313 p2p_head->oui_type = WLAN_OUI_TYPE_WFA_P2P; 314 315 noa_head->attr_type = IEEE80211_P2P_ATTR_ABSENCE_NOTICE; 316 noa_head->attr_len = cpu_to_le16(2); 317 noa_head->index = setter->noa_index; 318 noa_head->oppps_ctwindow = 0; 319 } 320 321 void rtw89_p2p_noa_append(struct rtw89_vif *rtwvif, 322 const struct ieee80211_p2p_noa_desc *desc) 323 { 324 struct rtw89_p2p_noa_setter *setter = &rtwvif->p2p_noa; 325 struct rtw89_p2p_noa_ie *ie = &setter->ie; 326 struct rtw89_p2p_ie_head *p2p_head = &ie->p2p_head; 327 struct rtw89_noa_attr_head *noa_head = &ie->noa_head; 328 329 if (!desc->count || !desc->duration) 330 return; 331 332 if (setter->noa_count >= RTW89_P2P_MAX_NOA_NUM) 333 return; 334 335 p2p_head->ie_len += sizeof(*desc); 336 le16_add_cpu(&noa_head->attr_len, sizeof(*desc)); 337 338 ie->noa_desc[setter->noa_count++] = *desc; 339 } 340 341 u8 rtw89_p2p_noa_fetch(struct rtw89_vif *rtwvif, void **data) 342 { 343 struct rtw89_p2p_noa_setter *setter = &rtwvif->p2p_noa; 344 struct rtw89_p2p_noa_ie *ie = &setter->ie; 345 void *tail; 346 347 if (!setter->noa_count) 348 return 0; 349 350 *data = ie; 351 tail = ie->noa_desc + setter->noa_count; 352 return tail - *data; 353 } 354