rtw88: move adaptivity mechanism to firmware

Current adaptivity mechanism is achieved in driver, by periodically
referencing the IGI value and then updating related registers.
But we find that this way may halt TX activity too long if huge
and temporary energy is detected frequently. So we move the mechanism
to firmware for immediately reacting this case to recover TX rapidly.

Signed-off-by: Chin-Yen Lee <timlee@realtek.com>
Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210830072014.12250-5-pkshih@realtek.com

1 files changed, 47 insertions, 0 deletions

diff --git a/drivers/net/wireless/realtek/rtw88/fw.c b/drivers/net/wireless/realtek/rtw88/fw.c
index e6399519584b..ccd8221ab264 100644
--- a/drivers/net/wireless/realtek/rtw88/fw.c
+++ b/drivers/net/wireless/realtek/rtw88/fw.c
@@ -183,6 +183,28 @@ static void rtw_fw_scan_result(struct rtw_dev *rtwdev, u8 *payload,
 		dm_info->scan_density);
 }
 
+static void rtw_fw_adaptivity_result(struct rtw_dev *rtwdev, u8 *payload,
+				     u8 length)
+{
+	struct rtw_hw_reg_offset *edcca_th = rtwdev->chip->edcca_th;
+	struct rtw_c2h_adaptivity *result = (struct rtw_c2h_adaptivity *)payload;
+
+	rtw_dbg(rtwdev, RTW_DBG_ADAPTIVITY,
+		"Adaptivity: density %x igi %x l2h_th_init %x l2h %x h2l %x option %x\n",
+		result->density, result->igi, result->l2h_th_init, result->l2h,
+		result->h2l, result->option);
+
+	rtw_dbg(rtwdev, RTW_DBG_ADAPTIVITY, "Reg Setting: L2H %x H2L %x\n",
+		rtw_read32_mask(rtwdev, edcca_th[EDCCA_TH_L2H_IDX].hw_reg.addr,
+				edcca_th[EDCCA_TH_L2H_IDX].hw_reg.mask),
+		rtw_read32_mask(rtwdev, edcca_th[EDCCA_TH_H2L_IDX].hw_reg.addr,
+				edcca_th[EDCCA_TH_H2L_IDX].hw_reg.mask));
+
+	rtw_dbg(rtwdev, RTW_DBG_ADAPTIVITY, "EDCCA Flag %s\n",
+		rtw_read32_mask(rtwdev, REG_EDCCA_REPORT, BIT_EDCCA_FLAG) ?
+		"Set" : "Unset");
+}
+
 void rtw_fw_c2h_cmd_handle(struct rtw_dev *rtwdev, struct sk_buff *skb)
 {
 	struct rtw_c2h_cmd *c2h;
@@ -252,6 +274,10 @@ void rtw_fw_c2h_cmd_rx_irqsafe(struct rtw_dev *rtwdev, u32 pkt_offset,
 		rtw_fw_scan_result(rtwdev, c2h->payload, len);
 		dev_kfree_skb_any(skb);
 		break;
+	case C2H_ADAPTIVITY:
+		rtw_fw_adaptivity_result(rtwdev, c2h->payload, len);
+		dev_kfree_skb_any(skb);
+		break;
 	default:
 		/* pass offset for further operation */
 		*((u32 *)skb->cb) = pkt_offset;
@@ -1722,6 +1748,27 @@ void rtw_fw_channel_switch(struct rtw_dev *rtwdev, bool enable)
 	rtw_fw_send_h2c_packet(rtwdev, h2c_pkt);
 }
 
+void rtw_fw_adaptivity(struct rtw_dev *rtwdev)
+{
+	struct rtw_dm_info *dm_info = &rtwdev->dm_info;
+	u8 h2c_pkt[H2C_PKT_SIZE] = {0};
+
+	if (!rtw_edcca_enabled) {
+		dm_info->edcca_mode = RTW_EDCCA_NORMAL;
+		rtw_dbg(rtwdev, RTW_DBG_ADAPTIVITY,
+			"EDCCA disabled by debugfs\n");
+	}
+
+	SET_H2C_CMD_ID_CLASS(h2c_pkt, H2C_CMD_ADAPTIVITY);
+	SET_ADAPTIVITY_MODE(h2c_pkt, dm_info->edcca_mode);
+	SET_ADAPTIVITY_OPTION(h2c_pkt, 2);
+	SET_ADAPTIVITY_IGI(h2c_pkt, dm_info->igi_history[0]);
+	SET_ADAPTIVITY_L2H(h2c_pkt, dm_info->l2h_th_ini);
+	SET_ADAPTIVITY_DENSITY(h2c_pkt, dm_info->scan_density);
+
+	rtw_fw_send_h2c_command(rtwdev, h2c_pkt);
+}
+
 void rtw_fw_scan_notify(struct rtw_dev *rtwdev, bool start)
 {
 	u8 h2c_pkt[H2C_PKT_SIZE] = {0};