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 struct ieee80211_hw *hw = rtwdev->hw; 34 struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv; 35 struct rtw_bfee *bfee = &rtwvif->bfee; 36 struct rtw_bf_info *bfinfo = &rtwdev->bf_info; 37 struct rtw_chip_info *chip = rtwdev->chip; 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->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 = bss_conf->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(rtwdev, REG_SND_PTCL_CTRL, RTW_SND_CTRL_SOUNDING); 134 rtw_write8(rtwdev, REG_SND_PTCL_CTRL + 3, 0x26); 135 rtw_write8_clr(rtwdev, REG_RXFLTMAP1, BIT_RXFLTMAP1_BF_REPORT_POLL); 136 rtw_write8_clr(rtwdev, REG_RXFLTMAP4, BIT_RXFLTMAP4_BF_REPORT_POLL); 137 138 if (vif->net_type == RTW_NET_AP_MODE) 139 rtw_write32(rtwdev, REG_BBPSF_CTRL, psf_ctl | BIT(12)); 140 else 141 rtw_write32(rtwdev, REG_BBPSF_CTRL, psf_ctl & ~BIT(12)); 142 } 143 144 void rtw_bf_cfg_mu_bfee(struct rtw_dev *rtwdev, struct cfg_mumimo_para *param) 145 { 146 u8 mu_tbl_sel; 147 u8 mu_valid; 148 149 mu_valid = rtw_read8(rtwdev, REG_MU_TX_CTL) & 150 ~BIT_MASK_R_MU_TABLE_VALID; 151 152 rtw_write8(rtwdev, REG_MU_TX_CTL, 153 (mu_valid | BIT(0) | BIT(1)) & ~(BIT(7))); 154 155 mu_tbl_sel = rtw_read8(rtwdev, REG_MU_TX_CTL + 1) & 0xF8; 156 157 rtw_write8(rtwdev, REG_MU_TX_CTL + 1, mu_tbl_sel); 158 rtw_write32(rtwdev, REG_MU_STA_GID_VLD, param->given_gid_tab[0]); 159 rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO, param->given_user_pos[0]); 160 rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO + 4, 161 param->given_user_pos[1]); 162 163 rtw_write8(rtwdev, REG_MU_TX_CTL + 1, mu_tbl_sel | 1); 164 rtw_write32(rtwdev, REG_MU_STA_GID_VLD, param->given_gid_tab[1]); 165 rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO, param->given_user_pos[2]); 166 rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO + 4, 167 param->given_user_pos[3]); 168 } 169 170 void rtw_bf_del_bfer_entry_mu(struct rtw_dev *rtwdev) 171 { 172 rtw_write32(rtwdev, REG_ASSOCIATED_BFMER0_INFO, 0); 173 rtw_write32(rtwdev, REG_ASSOCIATED_BFMER0_INFO + 4, 0); 174 rtw_write16(rtwdev, REG_WMAC_MU_BF_CTL, 0); 175 rtw_write8(rtwdev, REG_MU_TX_CTL, 0); 176 } 177 178 void rtw_bf_del_sounding(struct rtw_dev *rtwdev) 179 { 180 rtw_write8(rtwdev, REG_SND_PTCL_CTRL, 0); 181 } 182 183 void rtw_bf_enable_bfee_su(struct rtw_dev *rtwdev, struct rtw_vif *vif, 184 struct rtw_bfee *bfee) 185 { 186 u8 nc_index = 1; 187 u8 nr_index = bfee->sound_dim; 188 u8 grouping = 0, codebookinfo = 1, coefficientsize = 3; 189 u32 addr_bfer_info, addr_csi_rpt, csi_param; 190 u8 i; 191 192 rtw_dbg(rtwdev, RTW_DBG_BF, "config as an su bfee\n"); 193 194 switch (bfee->su_reg_index) { 195 case 1: 196 addr_bfer_info = REG_ASSOCIATED_BFMER1_INFO; 197 addr_csi_rpt = REG_TX_CSI_RPT_PARAM_BW20 + 2; 198 break; 199 case 0: 200 default: 201 addr_bfer_info = REG_ASSOCIATED_BFMER0_INFO; 202 addr_csi_rpt = REG_TX_CSI_RPT_PARAM_BW20; 203 break; 204 } 205 206 /* Sounding protocol control */ 207 rtw_write8(rtwdev, REG_SND_PTCL_CTRL, RTW_SND_CTRL_SOUNDING); 208 209 /* MAC address/Partial AID of Beamformer */ 210 for (i = 0; i < ETH_ALEN; i++) 211 rtw_write8(rtwdev, addr_bfer_info + i, bfee->mac_addr[i]); 212 213 csi_param = (u16)((coefficientsize << 10) | 214 (codebookinfo << 8) | 215 (grouping << 6) | 216 (nr_index << 3) | 217 nc_index); 218 rtw_write16(rtwdev, addr_csi_rpt, csi_param); 219 220 /* ndp rx standby timer */ 221 rtw_write8(rtwdev, REG_SND_PTCL_CTRL + 3, RTW_NDP_RX_STANDBY_TIME); 222 } 223 224 /* nc index: 1 2T2R 0 1T1R 225 * nr index: 1 use Nsts 0 use reg setting 226 * codebookinfo: 1 802.11ac 3 802.11n 227 */ 228 void rtw_bf_enable_bfee_mu(struct rtw_dev *rtwdev, struct rtw_vif *vif, 229 struct rtw_bfee *bfee) 230 { 231 struct rtw_bf_info *bf_info = &rtwdev->bf_info; 232 struct mu_bfer_init_para param; 233 u8 nc_index = 1, nr_index = 1; 234 u8 grouping = 0, codebookinfo = 1, coefficientsize = 0; 235 u32 csi_param; 236 237 rtw_dbg(rtwdev, RTW_DBG_BF, "config as an mu bfee\n"); 238 239 csi_param = (u16)((coefficientsize << 10) | 240 (codebookinfo << 8) | 241 (grouping << 6) | 242 (nr_index << 3) | 243 nc_index); 244 245 rtw_dbg(rtwdev, RTW_DBG_BF, "nc=%d nr=%d group=%d codebookinfo=%d coefficientsize=%d\n", 246 nc_index, nr_index, grouping, codebookinfo, 247 coefficientsize); 248 249 param.paid = bfee->p_aid; 250 param.csi_para = csi_param; 251 param.my_aid = bfee->aid & 0xfff; 252 param.csi_length_sel = HAL_CSI_SEG_4K; 253 ether_addr_copy(param.bfer_address, bfee->mac_addr); 254 255 rtw_bf_init_bfer_entry_mu(rtwdev, ¶m); 256 257 bf_info->cur_csi_rpt_rate = DESC_RATE6M; 258 rtw_bf_cfg_sounding(rtwdev, vif, DESC_RATE6M); 259 260 /* accept action_no_ack */ 261 rtw_write16_set(rtwdev, REG_RXFLTMAP0, BIT_RXFLTMAP0_ACTIONNOACK); 262 263 /* accept NDPA and BF report poll */ 264 rtw_write16_set(rtwdev, REG_RXFLTMAP1, BIT_RXFLTMAP1_BF); 265 } 266 267 void rtw_bf_remove_bfee_su(struct rtw_dev *rtwdev, 268 struct rtw_bfee *bfee) 269 { 270 struct rtw_bf_info *bfinfo = &rtwdev->bf_info; 271 272 rtw_dbg(rtwdev, RTW_DBG_BF, "remove as a su bfee\n"); 273 rtw_write8(rtwdev, REG_SND_PTCL_CTRL, RTW_SND_CTRL_REMOVE); 274 275 switch (bfee->su_reg_index) { 276 case 0: 277 rtw_write32(rtwdev, REG_ASSOCIATED_BFMER0_INFO, 0); 278 rtw_write16(rtwdev, REG_ASSOCIATED_BFMER0_INFO + 4, 0); 279 rtw_write16(rtwdev, REG_TX_CSI_RPT_PARAM_BW20, 0); 280 break; 281 case 1: 282 rtw_write32(rtwdev, REG_ASSOCIATED_BFMER1_INFO, 0); 283 rtw_write16(rtwdev, REG_ASSOCIATED_BFMER1_INFO + 4, 0); 284 rtw_write16(rtwdev, REG_TX_CSI_RPT_PARAM_BW20 + 2, 0); 285 break; 286 } 287 288 clear_bit(bfee->su_reg_index, bfinfo->bfer_su_reg_maping); 289 bfee->su_reg_index = 0xFF; 290 } 291 292 void rtw_bf_remove_bfee_mu(struct rtw_dev *rtwdev, 293 struct rtw_bfee *bfee) 294 { 295 struct rtw_bf_info *bfinfo = &rtwdev->bf_info; 296 297 rtw_write8(rtwdev, REG_SND_PTCL_CTRL, RTW_SND_CTRL_REMOVE); 298 299 rtw_bf_del_bfer_entry_mu(rtwdev); 300 301 if (bfinfo->bfer_su_cnt == 0 && bfinfo->bfer_mu_cnt == 0) 302 rtw_bf_del_sounding(rtwdev); 303 } 304 305 void rtw_bf_set_gid_table(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, 306 struct ieee80211_bss_conf *conf) 307 { 308 struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv; 309 struct rtw_bfee *bfee = &rtwvif->bfee; 310 struct cfg_mumimo_para param; 311 312 if (bfee->role != RTW_BFEE_MU) { 313 rtw_dbg(rtwdev, RTW_DBG_BF, "this vif is not mu bfee\n"); 314 return; 315 } 316 317 param.grouping_bitmap = 0; 318 param.mu_tx_en = 0; 319 memset(param.sounding_sts, 0, 6); 320 memcpy(param.given_gid_tab, conf->mu_group.membership, 8); 321 memcpy(param.given_user_pos, conf->mu_group.position, 16); 322 rtw_dbg(rtwdev, RTW_DBG_BF, "STA0: gid_valid=0x%x, user_position_l=0x%x, user_position_h=0x%x\n", 323 param.given_gid_tab[0], param.given_user_pos[0], 324 param.given_user_pos[1]); 325 326 rtw_dbg(rtwdev, RTW_DBG_BF, "STA1: gid_valid=0x%x, user_position_l=0x%x, user_position_h=0x%x\n", 327 param.given_gid_tab[1], param.given_user_pos[2], 328 param.given_user_pos[3]); 329 330 rtw_bf_cfg_mu_bfee(rtwdev, ¶m); 331 } 332 333 void rtw_bf_phy_init(struct rtw_dev *rtwdev) 334 { 335 u8 tmp8; 336 u32 tmp32; 337 u8 retry_limit = 0xA; 338 u8 ndpa_rate = 0x10; 339 u8 ack_policy = 3; 340 341 tmp32 = rtw_read32(rtwdev, REG_MU_TX_CTL); 342 /* Enable P1 aggr new packet according to P0 transfer time */ 343 tmp32 |= BIT_MU_P1_WAIT_STATE_EN; 344 /* MU Retry Limit */ 345 tmp32 &= ~BIT_MASK_R_MU_RL; 346 tmp32 |= (retry_limit << BIT_SHIFT_R_MU_RL) & BIT_MASK_R_MU_RL; 347 /* Disable Tx MU-MIMO until sounding done */ 348 tmp32 &= ~BIT_EN_MU_MIMO; 349 /* Clear validity of MU STAs */ 350 tmp32 &= ~BIT_MASK_R_MU_TABLE_VALID; 351 rtw_write32(rtwdev, REG_MU_TX_CTL, tmp32); 352 353 /* MU-MIMO Option as default value */ 354 tmp8 = ack_policy << BIT_SHIFT_WMAC_TXMU_ACKPOLICY; 355 tmp8 |= BIT_WMAC_TXMU_ACKPOLICY_EN; 356 rtw_write8(rtwdev, REG_WMAC_MU_BF_OPTION, tmp8); 357 358 /* MU-MIMO Control as default value */ 359 rtw_write16(rtwdev, REG_WMAC_MU_BF_CTL, 0); 360 /* Set MU NDPA rate & BW source */ 361 rtw_write32_set(rtwdev, REG_TXBF_CTRL, BIT_USE_NDPA_PARAMETER); 362 /* Set NDPA Rate */ 363 rtw_write8(rtwdev, REG_NDPA_OPT_CTRL, ndpa_rate); 364 365 rtw_write32_mask(rtwdev, REG_BBPSF_CTRL, BIT_MASK_CSI_RATE, 366 DESC_RATE6M); 367 } 368 369 void rtw_bf_cfg_csi_rate(struct rtw_dev *rtwdev, u8 rssi, u8 cur_rate, 370 u8 fixrate_en, u8 *new_rate) 371 { 372 u32 csi_cfg; 373 u16 cur_rrsr; 374 375 csi_cfg = rtw_read32(rtwdev, REG_BBPSF_CTRL) & ~BIT_MASK_CSI_RATE; 376 cur_rrsr = rtw_read16(rtwdev, REG_RRSR); 377 378 if (rssi >= 40) { 379 if (cur_rate != DESC_RATE54M) { 380 cur_rrsr |= BIT(DESC_RATE54M); 381 csi_cfg |= (DESC_RATE54M & BIT_MASK_CSI_RATE_VAL) << 382 BIT_SHIFT_CSI_RATE; 383 rtw_write16(rtwdev, REG_RRSR, cur_rrsr); 384 rtw_write32(rtwdev, REG_BBPSF_CTRL, csi_cfg); 385 } 386 *new_rate = DESC_RATE54M; 387 } else { 388 if (cur_rate != DESC_RATE24M) { 389 cur_rrsr &= ~BIT(DESC_RATE54M); 390 csi_cfg |= (DESC_RATE54M & BIT_MASK_CSI_RATE_VAL) << 391 BIT_SHIFT_CSI_RATE; 392 rtw_write16(rtwdev, REG_RRSR, cur_rrsr); 393 rtw_write32(rtwdev, REG_BBPSF_CTRL, csi_cfg); 394 } 395 *new_rate = DESC_RATE24M; 396 } 397 } 398