1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* Copyright(c) 2018-2019 Realtek Corporation. 3 */ 4 5 #include "main.h" 6 #include "reg.h" 7 #include "bf.h" 8 #include "debug.h" 9 10 void rtw_bf_disassoc(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, 11 struct ieee80211_bss_conf *bss_conf) 12 { 13 struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv; 14 struct rtw_bfee *bfee = &rtwvif->bfee; 15 struct rtw_bf_info *bfinfo = &rtwdev->bf_info; 16 17 if (bfee->role == RTW_BFEE_NONE) 18 return; 19 20 if (bfee->role == RTW_BFEE_MU) 21 bfinfo->bfer_mu_cnt--; 22 else if (bfee->role == RTW_BFEE_SU) 23 bfinfo->bfer_su_cnt--; 24 25 rtw_chip_config_bfee(rtwdev, rtwvif, bfee, false); 26 27 bfee->role = RTW_BFEE_NONE; 28 } 29 30 void rtw_bf_assoc(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, 31 struct ieee80211_bss_conf *bss_conf) 32 { 33 const struct rtw_chip_info *chip = rtwdev->chip; 34 struct ieee80211_hw *hw = rtwdev->hw; 35 struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv; 36 struct rtw_bfee *bfee = &rtwvif->bfee; 37 struct rtw_bf_info *bfinfo = &rtwdev->bf_info; 38 struct ieee80211_sta *sta; 39 struct ieee80211_sta_vht_cap *vht_cap; 40 struct ieee80211_sta_vht_cap *ic_vht_cap; 41 const u8 *bssid = bss_conf->bssid; 42 u32 sound_dim; 43 u8 i; 44 45 if (!(chip->band & RTW_BAND_5G)) 46 return; 47 48 rcu_read_lock(); 49 50 sta = ieee80211_find_sta(vif, bssid); 51 if (!sta) { 52 rtw_warn(rtwdev, "failed to find station entry for bss %pM\n", 53 bssid); 54 goto out_unlock; 55 } 56 57 ic_vht_cap = &hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap; 58 vht_cap = &sta->deflink.vht_cap; 59 60 if ((ic_vht_cap->cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) && 61 (vht_cap->cap & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)) { 62 if (bfinfo->bfer_mu_cnt >= chip->bfer_mu_max_num) { 63 rtw_dbg(rtwdev, RTW_DBG_BF, "mu bfer number over limit\n"); 64 goto out_unlock; 65 } 66 67 ether_addr_copy(bfee->mac_addr, bssid); 68 bfee->role = RTW_BFEE_MU; 69 bfee->p_aid = (bssid[5] << 1) | (bssid[4] >> 7); 70 bfee->aid = vif->cfg.aid; 71 bfinfo->bfer_mu_cnt++; 72 73 rtw_chip_config_bfee(rtwdev, rtwvif, bfee, true); 74 } else if ((ic_vht_cap->cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE) && 75 (vht_cap->cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)) { 76 if (bfinfo->bfer_su_cnt >= chip->bfer_su_max_num) { 77 rtw_dbg(rtwdev, RTW_DBG_BF, "su bfer number over limit\n"); 78 goto out_unlock; 79 } 80 81 sound_dim = vht_cap->cap & 82 IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK; 83 sound_dim >>= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT; 84 85 ether_addr_copy(bfee->mac_addr, bssid); 86 bfee->role = RTW_BFEE_SU; 87 bfee->sound_dim = (u8)sound_dim; 88 bfee->g_id = 0; 89 bfee->p_aid = (bssid[5] << 1) | (bssid[4] >> 7); 90 bfinfo->bfer_su_cnt++; 91 for (i = 0; i < chip->bfer_su_max_num; i++) { 92 if (!test_bit(i, bfinfo->bfer_su_reg_maping)) { 93 set_bit(i, bfinfo->bfer_su_reg_maping); 94 bfee->su_reg_index = i; 95 break; 96 } 97 } 98 99 rtw_chip_config_bfee(rtwdev, rtwvif, bfee, true); 100 } 101 102 out_unlock: 103 rcu_read_unlock(); 104 } 105 106 void rtw_bf_init_bfer_entry_mu(struct rtw_dev *rtwdev, 107 struct mu_bfer_init_para *param) 108 { 109 u16 mu_bf_ctl = 0; 110 u8 *addr = param->bfer_address; 111 int i; 112 113 for (i = 0; i < ETH_ALEN; i++) 114 rtw_write8(rtwdev, REG_ASSOCIATED_BFMER0_INFO + i, addr[i]); 115 rtw_write16(rtwdev, REG_ASSOCIATED_BFMER0_INFO + 6, param->paid); 116 rtw_write16(rtwdev, REG_TX_CSI_RPT_PARAM_BW20, param->csi_para); 117 118 mu_bf_ctl = rtw_read16(rtwdev, REG_WMAC_MU_BF_CTL) & 0xC000; 119 mu_bf_ctl |= param->my_aid | (param->csi_length_sel << 12); 120 rtw_write16(rtwdev, REG_WMAC_MU_BF_CTL, mu_bf_ctl); 121 } 122 123 void rtw_bf_cfg_sounding(struct rtw_dev *rtwdev, struct rtw_vif *vif, 124 enum rtw_trx_desc_rate rate) 125 { 126 u32 psf_ctl = 0; 127 u8 csi_rsc = 0x1; 128 129 psf_ctl = rtw_read32(rtwdev, REG_BBPSF_CTRL) | 130 BIT_WMAC_USE_NDPARATE | 131 (csi_rsc << 13); 132 133 rtw_write8_mask(rtwdev, REG_SND_PTCL_CTRL, BIT_MASK_BEAMFORM, 134 RTW_SND_CTRL_SOUNDING); 135 rtw_write8(rtwdev, REG_SND_PTCL_CTRL + 3, 0x26); 136 rtw_write8_clr(rtwdev, REG_RXFLTMAP1, BIT_RXFLTMAP1_BF_REPORT_POLL); 137 rtw_write8_clr(rtwdev, REG_RXFLTMAP4, BIT_RXFLTMAP4_BF_REPORT_POLL); 138 139 if (vif->net_type == RTW_NET_AP_MODE) 140 rtw_write32(rtwdev, REG_BBPSF_CTRL, psf_ctl | BIT(12)); 141 else 142 rtw_write32(rtwdev, REG_BBPSF_CTRL, psf_ctl & ~BIT(12)); 143 } 144 145 void rtw_bf_cfg_mu_bfee(struct rtw_dev *rtwdev, struct cfg_mumimo_para *param) 146 { 147 u8 mu_tbl_sel; 148 u8 mu_valid; 149 150 mu_valid = rtw_read8(rtwdev, REG_MU_TX_CTL) & 151 ~BIT_MASK_R_MU_TABLE_VALID; 152 153 rtw_write8(rtwdev, REG_MU_TX_CTL, 154 (mu_valid | BIT(0) | BIT(1)) & ~(BIT(7))); 155 156 mu_tbl_sel = rtw_read8(rtwdev, REG_MU_TX_CTL + 1) & 0xF8; 157 158 rtw_write8(rtwdev, REG_MU_TX_CTL + 1, mu_tbl_sel); 159 rtw_write32(rtwdev, REG_MU_STA_GID_VLD, param->given_gid_tab[0]); 160 rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO, param->given_user_pos[0]); 161 rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO + 4, 162 param->given_user_pos[1]); 163 164 rtw_write8(rtwdev, REG_MU_TX_CTL + 1, mu_tbl_sel | 1); 165 rtw_write32(rtwdev, REG_MU_STA_GID_VLD, param->given_gid_tab[1]); 166 rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO, param->given_user_pos[2]); 167 rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO + 4, 168 param->given_user_pos[3]); 169 } 170 171 void rtw_bf_del_bfer_entry_mu(struct rtw_dev *rtwdev) 172 { 173 rtw_write32(rtwdev, REG_ASSOCIATED_BFMER0_INFO, 0); 174 rtw_write32(rtwdev, REG_ASSOCIATED_BFMER0_INFO + 4, 0); 175 rtw_write16(rtwdev, REG_WMAC_MU_BF_CTL, 0); 176 rtw_write8(rtwdev, REG_MU_TX_CTL, 0); 177 } 178 179 void rtw_bf_del_sounding(struct rtw_dev *rtwdev) 180 { 181 rtw_write8_mask(rtwdev, REG_SND_PTCL_CTRL, BIT_MASK_BEAMFORM, 0); 182 } 183 184 void rtw_bf_enable_bfee_su(struct rtw_dev *rtwdev, struct rtw_vif *vif, 185 struct rtw_bfee *bfee) 186 { 187 u8 nc_index = hweight8(rtwdev->hal.antenna_rx) - 1; 188 u8 nr_index = bfee->sound_dim; 189 u8 grouping = 0, codebookinfo = 1, coefficientsize = 3; 190 u32 addr_bfer_info, addr_csi_rpt, csi_param; 191 u8 i; 192 193 rtw_dbg(rtwdev, RTW_DBG_BF, "config as an su bfee\n"); 194 195 switch (bfee->su_reg_index) { 196 case 1: 197 addr_bfer_info = REG_ASSOCIATED_BFMER1_INFO; 198 addr_csi_rpt = REG_TX_CSI_RPT_PARAM_BW20 + 2; 199 break; 200 case 0: 201 default: 202 addr_bfer_info = REG_ASSOCIATED_BFMER0_INFO; 203 addr_csi_rpt = REG_TX_CSI_RPT_PARAM_BW20; 204 break; 205 } 206 207 /* Sounding protocol control */ 208 rtw_write8_mask(rtwdev, REG_SND_PTCL_CTRL, BIT_MASK_BEAMFORM, 209 RTW_SND_CTRL_SOUNDING); 210 211 /* MAC address/Partial AID of Beamformer */ 212 for (i = 0; i < ETH_ALEN; i++) 213 rtw_write8(rtwdev, addr_bfer_info + i, bfee->mac_addr[i]); 214 215 csi_param = (u16)((coefficientsize << 10) | 216 (codebookinfo << 8) | 217 (grouping << 6) | 218 (nr_index << 3) | 219 nc_index); 220 rtw_write16(rtwdev, addr_csi_rpt, csi_param); 221 222 /* ndp rx standby timer */ 223 rtw_write8(rtwdev, REG_SND_PTCL_CTRL + 3, RTW_NDP_RX_STANDBY_TIME); 224 } 225 EXPORT_SYMBOL(rtw_bf_enable_bfee_su); 226 227 /* nc index: 1 2T2R 0 1T1R 228 * nr index: 1 use Nsts 0 use reg setting 229 * codebookinfo: 1 802.11ac 3 802.11n 230 */ 231 void rtw_bf_enable_bfee_mu(struct rtw_dev *rtwdev, struct rtw_vif *vif, 232 struct rtw_bfee *bfee) 233 { 234 struct rtw_bf_info *bf_info = &rtwdev->bf_info; 235 struct mu_bfer_init_para param; 236 u8 nc_index = hweight8(rtwdev->hal.antenna_rx) - 1; 237 u8 nr_index = 1; 238 u8 grouping = 0, codebookinfo = 1, coefficientsize = 0; 239 u32 csi_param; 240 241 rtw_dbg(rtwdev, RTW_DBG_BF, "config as an mu bfee\n"); 242 243 csi_param = (u16)((coefficientsize << 10) | 244 (codebookinfo << 8) | 245 (grouping << 6) | 246 (nr_index << 3) | 247 nc_index); 248 249 rtw_dbg(rtwdev, RTW_DBG_BF, "nc=%d nr=%d group=%d codebookinfo=%d coefficientsize=%d\n", 250 nc_index, nr_index, grouping, codebookinfo, 251 coefficientsize); 252 253 param.paid = bfee->p_aid; 254 param.csi_para = csi_param; 255 param.my_aid = bfee->aid & 0xfff; 256 param.csi_length_sel = HAL_CSI_SEG_4K; 257 ether_addr_copy(param.bfer_address, bfee->mac_addr); 258 259 rtw_bf_init_bfer_entry_mu(rtwdev, ¶m); 260 261 bf_info->cur_csi_rpt_rate = DESC_RATE6M; 262 rtw_bf_cfg_sounding(rtwdev, vif, DESC_RATE6M); 263 264 /* accept action_no_ack */ 265 rtw_write16_set(rtwdev, REG_RXFLTMAP0, BIT_RXFLTMAP0_ACTIONNOACK); 266 267 /* accept NDPA and BF report poll */ 268 rtw_write16_set(rtwdev, REG_RXFLTMAP1, BIT_RXFLTMAP1_BF); 269 } 270 EXPORT_SYMBOL(rtw_bf_enable_bfee_mu); 271 272 void rtw_bf_remove_bfee_su(struct rtw_dev *rtwdev, 273 struct rtw_bfee *bfee) 274 { 275 struct rtw_bf_info *bfinfo = &rtwdev->bf_info; 276 277 rtw_dbg(rtwdev, RTW_DBG_BF, "remove as a su bfee\n"); 278 rtw_write8_mask(rtwdev, REG_SND_PTCL_CTRL, BIT_MASK_BEAMFORM, 279 RTW_SND_CTRL_REMOVE); 280 281 switch (bfee->su_reg_index) { 282 case 0: 283 rtw_write32(rtwdev, REG_ASSOCIATED_BFMER0_INFO, 0); 284 rtw_write16(rtwdev, REG_ASSOCIATED_BFMER0_INFO + 4, 0); 285 rtw_write16(rtwdev, REG_TX_CSI_RPT_PARAM_BW20, 0); 286 break; 287 case 1: 288 rtw_write32(rtwdev, REG_ASSOCIATED_BFMER1_INFO, 0); 289 rtw_write16(rtwdev, REG_ASSOCIATED_BFMER1_INFO + 4, 0); 290 rtw_write16(rtwdev, REG_TX_CSI_RPT_PARAM_BW20 + 2, 0); 291 break; 292 } 293 294 clear_bit(bfee->su_reg_index, bfinfo->bfer_su_reg_maping); 295 bfee->su_reg_index = 0xFF; 296 } 297 EXPORT_SYMBOL(rtw_bf_remove_bfee_su); 298 299 void rtw_bf_remove_bfee_mu(struct rtw_dev *rtwdev, 300 struct rtw_bfee *bfee) 301 { 302 struct rtw_bf_info *bfinfo = &rtwdev->bf_info; 303 304 rtw_write8_mask(rtwdev, REG_SND_PTCL_CTRL, BIT_MASK_BEAMFORM, 305 RTW_SND_CTRL_REMOVE); 306 307 rtw_bf_del_bfer_entry_mu(rtwdev); 308 309 if (bfinfo->bfer_su_cnt == 0 && bfinfo->bfer_mu_cnt == 0) 310 rtw_bf_del_sounding(rtwdev); 311 } 312 EXPORT_SYMBOL(rtw_bf_remove_bfee_mu); 313 314 void rtw_bf_set_gid_table(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, 315 struct ieee80211_bss_conf *conf) 316 { 317 struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv; 318 struct rtw_bfee *bfee = &rtwvif->bfee; 319 struct cfg_mumimo_para param; 320 321 if (bfee->role != RTW_BFEE_MU) { 322 rtw_dbg(rtwdev, RTW_DBG_BF, "this vif is not mu bfee\n"); 323 return; 324 } 325 326 param.grouping_bitmap = 0; 327 param.mu_tx_en = 0; 328 memset(param.sounding_sts, 0, 6); 329 memcpy(param.given_gid_tab, conf->mu_group.membership, 8); 330 memcpy(param.given_user_pos, conf->mu_group.position, 16); 331 rtw_dbg(rtwdev, RTW_DBG_BF, "STA0: gid_valid=0x%x, user_position_l=0x%x, user_position_h=0x%x\n", 332 param.given_gid_tab[0], param.given_user_pos[0], 333 param.given_user_pos[1]); 334 335 rtw_dbg(rtwdev, RTW_DBG_BF, "STA1: gid_valid=0x%x, user_position_l=0x%x, user_position_h=0x%x\n", 336 param.given_gid_tab[1], param.given_user_pos[2], 337 param.given_user_pos[3]); 338 339 rtw_bf_cfg_mu_bfee(rtwdev, ¶m); 340 } 341 EXPORT_SYMBOL(rtw_bf_set_gid_table); 342 343 void rtw_bf_phy_init(struct rtw_dev *rtwdev) 344 { 345 u8 tmp8; 346 u32 tmp32; 347 u8 retry_limit = 0xA; 348 u8 ndpa_rate = 0x10; 349 u8 ack_policy = 3; 350 351 tmp32 = rtw_read32(rtwdev, REG_MU_TX_CTL); 352 /* Enable P1 aggr new packet according to P0 transfer time */ 353 tmp32 |= BIT_MU_P1_WAIT_STATE_EN; 354 /* MU Retry Limit */ 355 tmp32 &= ~BIT_MASK_R_MU_RL; 356 tmp32 |= (retry_limit << BIT_SHIFT_R_MU_RL) & BIT_MASK_R_MU_RL; 357 /* Disable Tx MU-MIMO until sounding done */ 358 tmp32 &= ~BIT_EN_MU_MIMO; 359 /* Clear validity of MU STAs */ 360 tmp32 &= ~BIT_MASK_R_MU_TABLE_VALID; 361 rtw_write32(rtwdev, REG_MU_TX_CTL, tmp32); 362 363 /* MU-MIMO Option as default value */ 364 tmp8 = ack_policy << BIT_SHIFT_WMAC_TXMU_ACKPOLICY; 365 tmp8 |= BIT_WMAC_TXMU_ACKPOLICY_EN; 366 rtw_write8(rtwdev, REG_WMAC_MU_BF_OPTION, tmp8); 367 368 /* MU-MIMO Control as default value */ 369 rtw_write16(rtwdev, REG_WMAC_MU_BF_CTL, 0); 370 /* Set MU NDPA rate & BW source */ 371 rtw_write32_set(rtwdev, REG_TXBF_CTRL, BIT_USE_NDPA_PARAMETER); 372 /* Set NDPA Rate */ 373 rtw_write8(rtwdev, REG_NDPA_OPT_CTRL, ndpa_rate); 374 375 rtw_write32_mask(rtwdev, REG_BBPSF_CTRL, BIT_MASK_CSI_RATE, 376 DESC_RATE6M); 377 } 378 EXPORT_SYMBOL(rtw_bf_phy_init); 379 380 void rtw_bf_cfg_csi_rate(struct rtw_dev *rtwdev, u8 rssi, u8 cur_rate, 381 u8 fixrate_en, u8 *new_rate) 382 { 383 u32 csi_cfg; 384 u16 cur_rrsr; 385 386 csi_cfg = rtw_read32(rtwdev, REG_BBPSF_CTRL) & ~BIT_MASK_CSI_RATE; 387 cur_rrsr = rtw_read16(rtwdev, REG_RRSR); 388 389 if (rssi >= 40) { 390 if (cur_rate != DESC_RATE54M) { 391 cur_rrsr |= BIT(DESC_RATE54M); 392 csi_cfg |= (DESC_RATE54M & BIT_MASK_CSI_RATE_VAL) << 393 BIT_SHIFT_CSI_RATE; 394 rtw_write16(rtwdev, REG_RRSR, cur_rrsr); 395 rtw_write32(rtwdev, REG_BBPSF_CTRL, csi_cfg); 396 } 397 *new_rate = DESC_RATE54M; 398 } else { 399 if (cur_rate != DESC_RATE24M) { 400 cur_rrsr &= ~BIT(DESC_RATE54M); 401 csi_cfg |= (DESC_RATE54M & BIT_MASK_CSI_RATE_VAL) << 402 BIT_SHIFT_CSI_RATE; 403 rtw_write16(rtwdev, REG_RRSR, cur_rrsr); 404 rtw_write32(rtwdev, REG_BBPSF_CTRL, csi_cfg); 405 } 406 *new_rate = DESC_RATE24M; 407 } 408 } 409 EXPORT_SYMBOL(rtw_bf_cfg_csi_rate); 410