summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/realtek/rtw88/bf.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/realtek/rtw88/bf.c')
-rw-r--r--drivers/net/wireless/realtek/rtw88/bf.c400
1 files changed, 400 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw88/bf.c b/drivers/net/wireless/realtek/rtw88/bf.c
new file mode 100644
index 000000000000..fda771d23f71
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtw88/bf.c
@@ -0,0 +1,400 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/* Copyright(c) 2018-2019 Realtek Corporation.
+ */
+
+#include "main.h"
+#include "reg.h"
+#include "bf.h"
+#include "debug.h"
+
+void rtw_bf_disassoc(struct rtw_dev *rtwdev, struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf)
+{
+ struct rtw_chip_info *chip = rtwdev->chip;
+ struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv;
+ struct rtw_bfee *bfee = &rtwvif->bfee;
+ struct rtw_bf_info *bfinfo = &rtwdev->bf_info;
+
+ if (bfee->role == RTW_BFEE_NONE)
+ return;
+
+ if (bfee->role == RTW_BFEE_MU)
+ bfinfo->bfer_mu_cnt--;
+ else if (bfee->role == RTW_BFEE_SU)
+ bfinfo->bfer_su_cnt--;
+
+ chip->ops->config_bfee(rtwdev, rtwvif, bfee, false);
+
+ bfee->role = RTW_BFEE_NONE;
+}
+
+void rtw_bf_assoc(struct rtw_dev *rtwdev, struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf)
+{
+ struct ieee80211_hw *hw = rtwdev->hw;
+ struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv;
+ struct rtw_bfee *bfee = &rtwvif->bfee;
+ struct rtw_bf_info *bfinfo = &rtwdev->bf_info;
+ struct rtw_chip_info *chip = rtwdev->chip;
+ struct ieee80211_sta *sta;
+ struct ieee80211_sta_vht_cap *vht_cap;
+ struct ieee80211_sta_vht_cap *ic_vht_cap;
+ const u8 *bssid = bss_conf->bssid;
+ u32 sound_dim;
+ u8 bfee_role = RTW_BFEE_NONE;
+ u8 i;
+
+ if (!(chip->band & RTW_BAND_5G))
+ return;
+
+ rcu_read_lock();
+
+ sta = ieee80211_find_sta(vif, bssid);
+ if (!sta) {
+ rtw_warn(rtwdev, "failed to find station entry for bss %pM\n",
+ bssid);
+ goto out_unlock;
+ }
+
+ ic_vht_cap = &hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap;
+ vht_cap = &sta->vht_cap;
+
+ if ((ic_vht_cap->cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) &&
+ (vht_cap->cap & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)) {
+ if (bfinfo->bfer_mu_cnt >= chip->bfer_mu_max_num) {
+ rtw_dbg(rtwdev, RTW_DBG_BF, "mu bfer number over limit\n");
+ goto out_unlock;
+ }
+
+ ether_addr_copy(bfee->mac_addr, bssid);
+ bfee_role = RTW_BFEE_MU;
+ bfee->p_aid = (bssid[5] << 1) | (bssid[4] >> 7);
+ bfee->aid = bss_conf->aid;
+ bfinfo->bfer_mu_cnt++;
+
+ chip->ops->config_bfee(rtwdev, rtwvif, bfee, true);
+ } else if ((ic_vht_cap->cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE) &&
+ (vht_cap->cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)) {
+ if (bfinfo->bfer_su_cnt >= chip->bfer_su_max_num) {
+ rtw_dbg(rtwdev, RTW_DBG_BF, "su bfer number over limit\n");
+ goto out_unlock;
+ }
+
+ sound_dim = vht_cap->cap &
+ IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK;
+ sound_dim >>= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT;
+
+ ether_addr_copy(bfee->mac_addr, bssid);
+ bfee_role = RTW_BFEE_SU;
+ bfee->sound_dim = (u8)sound_dim;
+ bfee->g_id = 0;
+ bfee->p_aid = (bssid[5] << 1) | (bssid[4] >> 7);
+ bfinfo->bfer_su_cnt++;
+ for (i = 0; i < chip->bfer_su_max_num; i++) {
+ if (!test_bit(i, bfinfo->bfer_su_reg_maping)) {
+ set_bit(i, bfinfo->bfer_su_reg_maping);
+ bfee->su_reg_index = i;
+ break;
+ }
+ }
+
+ chip->ops->config_bfee(rtwdev, rtwvif, bfee, true);
+ }
+
+out_unlock:
+ bfee->role = bfee_role;
+ rcu_read_unlock();
+}
+
+void rtw_bf_init_bfer_entry_mu(struct rtw_dev *rtwdev,
+ struct mu_bfer_init_para *param)
+{
+ u16 mu_bf_ctl = 0;
+ u8 *addr = param->bfer_address;
+ int i;
+
+ for (i = 0; i < ETH_ALEN; i++)
+ rtw_write8(rtwdev, REG_ASSOCIATED_BFMER0_INFO + i, addr[i]);
+ rtw_write16(rtwdev, REG_ASSOCIATED_BFMER0_INFO + 6, param->paid);
+ rtw_write16(rtwdev, REG_TX_CSI_RPT_PARAM_BW20, param->csi_para);
+
+ mu_bf_ctl = rtw_read16(rtwdev, REG_WMAC_MU_BF_CTL) & 0xC000;
+ mu_bf_ctl |= param->my_aid | (param->csi_length_sel << 12);
+ rtw_write16(rtwdev, REG_WMAC_MU_BF_CTL, mu_bf_ctl);
+}
+
+void rtw_bf_cfg_sounding(struct rtw_dev *rtwdev, struct rtw_vif *vif,
+ enum rtw_trx_desc_rate rate)
+{
+ u32 psf_ctl = 0;
+ u8 csi_rsc = 0x1;
+
+ psf_ctl = rtw_read32(rtwdev, REG_BBPSF_CTRL) |
+ BIT_WMAC_USE_NDPARATE |
+ (csi_rsc << 13);
+
+ rtw_write8(rtwdev, REG_SND_PTCL_CTRL, RTW_SND_CTRL_SOUNDING);
+ rtw_write8(rtwdev, REG_SND_PTCL_CTRL + 3, 0x26);
+ rtw_write8_clr(rtwdev, REG_RXFLTMAP1, BIT_RXFLTMAP1_BF_REPORT_POLL);
+ rtw_write8_clr(rtwdev, REG_RXFLTMAP4, BIT_RXFLTMAP4_BF_REPORT_POLL);
+
+ if (vif->net_type == RTW_NET_AP_MODE)
+ rtw_write32(rtwdev, REG_BBPSF_CTRL, psf_ctl | BIT(12));
+ else
+ rtw_write32(rtwdev, REG_BBPSF_CTRL, psf_ctl & ~BIT(12));
+}
+
+void rtw_bf_cfg_mu_bfee(struct rtw_dev *rtwdev, struct cfg_mumimo_para *param)
+{
+ u8 mu_tbl_sel;
+ u8 mu_valid;
+
+ mu_valid = rtw_read8(rtwdev, REG_MU_TX_CTL) &
+ ~BIT_MASK_R_MU_TABLE_VALID;
+
+ rtw_write8(rtwdev, REG_MU_TX_CTL,
+ (mu_valid | BIT(0) | BIT(1)) & ~(BIT(7)));
+
+ mu_tbl_sel = rtw_read8(rtwdev, REG_MU_TX_CTL + 1) & 0xF8;
+
+ rtw_write8(rtwdev, REG_MU_TX_CTL + 1, mu_tbl_sel);
+ rtw_write32(rtwdev, REG_MU_STA_GID_VLD, param->given_gid_tab[0]);
+ rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO, param->given_user_pos[0]);
+ rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO + 4,
+ param->given_user_pos[1]);
+
+ rtw_write8(rtwdev, REG_MU_TX_CTL + 1, mu_tbl_sel | 1);
+ rtw_write32(rtwdev, REG_MU_STA_GID_VLD, param->given_gid_tab[1]);
+ rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO, param->given_user_pos[2]);
+ rtw_write32(rtwdev, REG_MU_STA_USER_POS_INFO + 4,
+ param->given_user_pos[3]);
+}
+
+void rtw_bf_del_bfer_entry_mu(struct rtw_dev *rtwdev)
+{
+ rtw_write32(rtwdev, REG_ASSOCIATED_BFMER0_INFO, 0);
+ rtw_write32(rtwdev, REG_ASSOCIATED_BFMER0_INFO + 4, 0);
+ rtw_write16(rtwdev, REG_WMAC_MU_BF_CTL, 0);
+ rtw_write8(rtwdev, REG_MU_TX_CTL, 0);
+}
+
+void rtw_bf_del_sounding(struct rtw_dev *rtwdev)
+{
+ rtw_write8(rtwdev, REG_SND_PTCL_CTRL, 0);
+}
+
+void rtw_bf_enable_bfee_su(struct rtw_dev *rtwdev, struct rtw_vif *vif,
+ struct rtw_bfee *bfee)
+{
+ u8 nc_index = 1;
+ u8 nr_index = bfee->sound_dim;
+ u8 grouping = 0, codebookinfo = 1, coefficientsize = 3;
+ u32 addr_bfer_info, addr_csi_rpt, csi_param;
+ u8 i;
+
+ rtw_dbg(rtwdev, RTW_DBG_BF, "config as an su bfee\n");
+
+ switch (bfee->su_reg_index) {
+ case 1:
+ addr_bfer_info = REG_ASSOCIATED_BFMER1_INFO;
+ addr_csi_rpt = REG_TX_CSI_RPT_PARAM_BW20 + 2;
+ break;
+ case 0:
+ default:
+ addr_bfer_info = REG_ASSOCIATED_BFMER0_INFO;
+ addr_csi_rpt = REG_TX_CSI_RPT_PARAM_BW20;
+ break;
+ }
+
+ /* Sounding protocol control */
+ rtw_write8(rtwdev, REG_SND_PTCL_CTRL, RTW_SND_CTRL_SOUNDING);
+
+ /* MAC address/Partial AID of Beamformer */
+ for (i = 0; i < ETH_ALEN; i++)
+ rtw_write8(rtwdev, addr_bfer_info + i, bfee->mac_addr[i]);
+
+ csi_param = (u16)((coefficientsize << 10) |
+ (codebookinfo << 8) |
+ (grouping << 6) |
+ (nr_index << 3) |
+ nc_index);
+ rtw_write16(rtwdev, addr_csi_rpt, csi_param);
+
+ /* ndp rx standby timer */
+ rtw_write8(rtwdev, REG_SND_PTCL_CTRL + 3, RTW_NDP_RX_STANDBY_TIME);
+}
+
+/* nc index: 1 2T2R 0 1T1R
+ * nr index: 1 use Nsts 0 use reg setting
+ * codebookinfo: 1 802.11ac 3 802.11n
+ */
+void rtw_bf_enable_bfee_mu(struct rtw_dev *rtwdev, struct rtw_vif *vif,
+ struct rtw_bfee *bfee)
+{
+ struct rtw_bf_info *bf_info = &rtwdev->bf_info;
+ struct mu_bfer_init_para param;
+ u8 nc_index = 1, nr_index = 1;
+ u8 grouping = 0, codebookinfo = 1, coefficientsize = 0;
+ u32 csi_param;
+
+ rtw_dbg(rtwdev, RTW_DBG_BF, "config as an mu bfee\n");
+
+ csi_param = (u16)((coefficientsize << 10) |
+ (codebookinfo << 8) |
+ (grouping << 6) |
+ (nr_index << 3) |
+ nc_index);
+
+ rtw_dbg(rtwdev, RTW_DBG_BF, "nc=%d nr=%d group=%d codebookinfo=%d coefficientsize=%d\n",
+ nc_index, nr_index, grouping, codebookinfo,
+ coefficientsize);
+
+ param.paid = bfee->p_aid;
+ param.csi_para = csi_param;
+ param.my_aid = bfee->aid & 0xfff;
+ param.csi_length_sel = HAL_CSI_SEG_4K;
+ ether_addr_copy(param.bfer_address, bfee->mac_addr);
+
+ rtw_bf_init_bfer_entry_mu(rtwdev, &param);
+
+ bf_info->cur_csi_rpt_rate = DESC_RATE6M;
+ rtw_bf_cfg_sounding(rtwdev, vif, DESC_RATE6M);
+
+ /* accept action_no_ack */
+ rtw_write16_set(rtwdev, REG_RXFLTMAP0, BIT_RXFLTMAP0_ACTIONNOACK);
+
+ /* accept NDPA and BF report poll */
+ rtw_write16_set(rtwdev, REG_RXFLTMAP1, BIT_RXFLTMAP1_BF);
+}
+
+void rtw_bf_remove_bfee_su(struct rtw_dev *rtwdev,
+ struct rtw_bfee *bfee)
+{
+ struct rtw_bf_info *bfinfo = &rtwdev->bf_info;
+
+ rtw_dbg(rtwdev, RTW_DBG_BF, "remove as a su bfee\n");
+ rtw_write8(rtwdev, REG_SND_PTCL_CTRL, RTW_SND_CTRL_REMOVE);
+
+ switch (bfee->su_reg_index) {
+ case 0:
+ rtw_write32(rtwdev, REG_ASSOCIATED_BFMER0_INFO, 0);
+ rtw_write16(rtwdev, REG_ASSOCIATED_BFMER0_INFO + 4, 0);
+ rtw_write16(rtwdev, REG_TX_CSI_RPT_PARAM_BW20, 0);
+ break;
+ case 1:
+ rtw_write32(rtwdev, REG_ASSOCIATED_BFMER1_INFO, 0);
+ rtw_write16(rtwdev, REG_ASSOCIATED_BFMER1_INFO + 4, 0);
+ rtw_write16(rtwdev, REG_TX_CSI_RPT_PARAM_BW20 + 2, 0);
+ break;
+ }
+
+ clear_bit(bfee->su_reg_index, bfinfo->bfer_su_reg_maping);
+ bfee->su_reg_index = 0xFF;
+}
+
+void rtw_bf_remove_bfee_mu(struct rtw_dev *rtwdev,
+ struct rtw_bfee *bfee)
+{
+ struct rtw_bf_info *bfinfo = &rtwdev->bf_info;
+
+ rtw_write8(rtwdev, REG_SND_PTCL_CTRL, RTW_SND_CTRL_REMOVE);
+
+ rtw_bf_del_bfer_entry_mu(rtwdev);
+
+ if (bfinfo->bfer_su_cnt == 0 && bfinfo->bfer_mu_cnt == 0)
+ rtw_bf_del_sounding(rtwdev);
+}
+
+void rtw_bf_set_gid_table(struct rtw_dev *rtwdev, struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *conf)
+{
+ struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv;
+ struct rtw_bfee *bfee = &rtwvif->bfee;
+ struct cfg_mumimo_para param;
+
+ if (bfee->role != RTW_BFEE_MU) {
+ rtw_dbg(rtwdev, RTW_DBG_BF, "this vif is not mu bfee\n");
+ return;
+ }
+
+ param.grouping_bitmap = 0;
+ param.mu_tx_en = 0;
+ memset(param.sounding_sts, 0, 6);
+ memcpy(param.given_gid_tab, conf->mu_group.membership, 8);
+ memcpy(param.given_user_pos, conf->mu_group.position, 16);
+ rtw_dbg(rtwdev, RTW_DBG_BF, "STA0: gid_valid=0x%x, user_position_l=0x%x, user_position_h=0x%x\n",
+ param.given_gid_tab[0], param.given_user_pos[0],
+ param.given_user_pos[1]);
+
+ rtw_dbg(rtwdev, RTW_DBG_BF, "STA1: gid_valid=0x%x, user_position_l=0x%x, user_position_h=0x%x\n",
+ param.given_gid_tab[1], param.given_user_pos[2],
+ param.given_user_pos[3]);
+
+ rtw_bf_cfg_mu_bfee(rtwdev, &param);
+}
+
+void rtw_bf_phy_init(struct rtw_dev *rtwdev)
+{
+ u8 tmp8;
+ u32 tmp32;
+ u8 retry_limit = 0xA;
+ u8 ndpa_rate = 0x10;
+ u8 ack_policy = 3;
+
+ tmp32 = rtw_read32(rtwdev, REG_MU_TX_CTL);
+ /* Enable P1 aggr new packet according to P0 transfer time */
+ tmp32 |= BIT_MU_P1_WAIT_STATE_EN;
+ /* MU Retry Limit */
+ tmp32 &= ~BIT_MASK_R_MU_RL;
+ tmp32 |= (retry_limit << BIT_SHIFT_R_MU_RL) & BIT_MASK_R_MU_RL;
+ /* Disable Tx MU-MIMO until sounding done */
+ tmp32 &= ~BIT_EN_MU_MIMO;
+ /* Clear validity of MU STAs */
+ tmp32 &= ~BIT_MASK_R_MU_TABLE_VALID;
+ rtw_write32(rtwdev, REG_MU_TX_CTL, tmp32);
+
+ /* MU-MIMO Option as default value */
+ tmp8 = ack_policy << BIT_SHIFT_WMAC_TXMU_ACKPOLICY;
+ tmp8 |= BIT_WMAC_TXMU_ACKPOLICY_EN;
+ rtw_write8(rtwdev, REG_WMAC_MU_BF_OPTION, tmp8);
+
+ /* MU-MIMO Control as default value */
+ rtw_write16(rtwdev, REG_WMAC_MU_BF_CTL, 0);
+ /* Set MU NDPA rate & BW source */
+ rtw_write32_set(rtwdev, REG_TXBF_CTRL, BIT_USE_NDPA_PARAMETER);
+ /* Set NDPA Rate */
+ rtw_write8(rtwdev, REG_NDPA_OPT_CTRL, ndpa_rate);
+
+ rtw_write32_mask(rtwdev, REG_BBPSF_CTRL, BIT_MASK_CSI_RATE,
+ DESC_RATE6M);
+}
+
+void rtw_bf_cfg_csi_rate(struct rtw_dev *rtwdev, u8 rssi, u8 cur_rate,
+ u8 fixrate_en, u8 *new_rate)
+{
+ u32 csi_cfg;
+ u16 cur_rrsr;
+
+ csi_cfg = rtw_read32(rtwdev, REG_BBPSF_CTRL) & ~BIT_MASK_CSI_RATE;
+ cur_rrsr = rtw_read16(rtwdev, REG_RRSR);
+
+ if (rssi >= 40) {
+ if (cur_rate != DESC_RATE54M) {
+ cur_rrsr |= BIT(DESC_RATE54M);
+ csi_cfg |= (DESC_RATE54M & BIT_MASK_CSI_RATE_VAL) <<
+ BIT_SHIFT_CSI_RATE;
+ rtw_write16(rtwdev, REG_RRSR, cur_rrsr);
+ rtw_write32(rtwdev, REG_BBPSF_CTRL, csi_cfg);
+ }
+ *new_rate = DESC_RATE54M;
+ } else {
+ if (cur_rate != DESC_RATE24M) {
+ cur_rrsr &= ~BIT(DESC_RATE54M);
+ csi_cfg |= (DESC_RATE54M & BIT_MASK_CSI_RATE_VAL) <<
+ BIT_SHIFT_CSI_RATE;
+ rtw_write16(rtwdev, REG_RRSR, cur_rrsr);
+ rtw_write32(rtwdev, REG_BBPSF_CTRL, csi_cfg);
+ }
+ *new_rate = DESC_RATE24M;
+ }
+}