wifi: rtw89: pci: correct interrupt mitigation register for 8852CE

To reduce interrupt count, configure mitigation register with thresholds
of time and packet count. We missed that 8852CE uses different register
address, so correct it. Then, interrupt counts down to 30,763 from 229,825
during stress test in 20 seconds.

Signed-off-by: Ping-Ke Shih <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: Ping-Ke Shih

drivers/net/wireless/realtek/rtw89/pci.c

@@ -3620,6 +3620,7 @@ static void rtw89_pci_aspm_set(struct rtw89_dev *rtwdev, bool enable)
 
 static void rtw89_pci_recalc_int_mit(struct rtw89_dev *rtwdev)
 {
+	const struct rtw89_pci_info *info = rtwdev->pci_info;
 	struct rtw89_traffic_stats *stats = &rtwdev->stats;
 	enum rtw89_tfc_lv tx_tfc_lv = stats->tx_tfc_lv;
 	enum rtw89_tfc_lv rx_tfc_lv = stats->rx_tfc_lv;
@@ -3632,7 +3633,7 @@ static void rtw89_pci_recalc_int_mit(struct rtw89_dev *rtwdev)
 		      FIELD_PREP(B_AX_RXTIMER_UNIT_MASK, AX_RXTIMER_UNIT_64US) |
 		      FIELD_PREP(B_AX_RXTIMER_MATCH_MASK, 2048 / 64);
 
-	rtw89_write32(rtwdev, R_AX_INT_MIT_RX, val);
+	rtw89_write32(rtwdev, info->mit_addr, val);
 }
 
 static void rtw89_pci_link_cfg(struct rtw89_dev *rtwdev)

drivers/net/wireless/realtek/rtw89/pci.h

@@ -812,6 +812,13 @@
 #define B_AX_RXCOUNTER_MATCH_MASK	GENMASK(15, 8)
 #define B_AX_RXTIMER_MATCH_MASK		GENMASK(7, 0)
 
+#define R_AX_INT_MIT_RX_V1 0x1184
+#define B_AX_RXMIT_RXP2_SEL_V1 BIT(19)
+#define B_AX_RXMIT_RXP1_SEL_V1 BIT(18)
+#define B_AX_MIT_RXTIMER_UNIT_MASK GENMASK(17, 16)
+#define B_AX_MIT_RXCOUNTER_MATCH_MASK GENMASK(15, 8)
+#define B_AX_MIT_RXTIMER_MATCH_MASK GENMASK(7, 0)
+
 #define R_AX_DBG_ERR_FLAG		0x11C4
 #define B_AX_PCIE_RPQ_FULL		BIT(29)
 #define B_AX_PCIE_RXQ_FULL		BIT(28)
@@ -1241,6 +1248,7 @@ struct rtw89_pci_info {
 
 	u32 rpwm_addr;
 	u32 cpwm_addr;
+	u32 mit_addr;
 	u32 tx_dma_ch_mask;
 	const struct rtw89_pci_bd_idx_addr *bd_idx_addr_low_power;
 	const struct rtw89_pci_ch_dma_addr_set *dma_addr_set;

drivers/net/wireless/realtek/rtw89/rtw8851be.c

@@ -43,6 +43,7 @@ static const struct rtw89_pci_info rtw8851b_pci_info = {
 
 	.rpwm_addr		= R_AX_PCIE_HRPWM,
 	.cpwm_addr		= R_AX_CPWM,
+	.mit_addr		= R_AX_INT_MIT_RX,
 	.tx_dma_ch_mask		= BIT(RTW89_TXCH_ACH4) | BIT(RTW89_TXCH_ACH5) |
 				  BIT(RTW89_TXCH_ACH6) | BIT(RTW89_TXCH_ACH7) |
 				  BIT(RTW89_TXCH_CH10) | BIT(RTW89_TXCH_CH11),

drivers/net/wireless/realtek/rtw89/rtw8852ae.c

@@ -44,6 +44,7 @@ static const struct rtw89_pci_info rtw8852a_pci_info = {
 
 	.rpwm_addr		= R_AX_PCIE_HRPWM,
 	.cpwm_addr		= R_AX_CPWM,
+	.mit_addr		= R_AX_INT_MIT_RX,
 	.tx_dma_ch_mask		= 0,
 	.bd_idx_addr_low_power	= NULL,
 	.dma_addr_set		= &rtw89_pci_ch_dma_addr_set,

drivers/net/wireless/realtek/rtw89/rtw8852be.c

@@ -44,6 +44,7 @@ static const struct rtw89_pci_info rtw8852b_pci_info = {
 
 	.rpwm_addr		= R_AX_PCIE_HRPWM,
 	.cpwm_addr		= R_AX_CPWM,
+	.mit_addr		= R_AX_INT_MIT_RX,
 	.tx_dma_ch_mask		= BIT(RTW89_TXCH_ACH4) | BIT(RTW89_TXCH_ACH5) |
 				  BIT(RTW89_TXCH_ACH6) | BIT(RTW89_TXCH_ACH7) |
 				  BIT(RTW89_TXCH_CH10) | BIT(RTW89_TXCH_CH11),

drivers/net/wireless/realtek/rtw89/rtw8852ce.c

@@ -53,6 +53,7 @@ static const struct rtw89_pci_info rtw8852c_pci_info = {
 
 	.rpwm_addr		= R_AX_PCIE_HRPWM_V1,
 	.cpwm_addr		= R_AX_PCIE_CRPWM,
+	.mit_addr		= R_AX_INT_MIT_RX_V1,
 	.tx_dma_ch_mask		= 0,
 	.bd_idx_addr_low_power	= &rtw8852c_bd_idx_addr_low_power,
 	.dma_addr_set		= &rtw89_pci_ch_dma_addr_set_v1,