wifi: rtw89: add chip_ops::query_rxdesc() and rxd_len as helpers to support newer chips

The next generation chips use different RX descriptor format, so add
a chip_ops to hook suitable handlers. Also, the length of RX descriptor is
different, so add a variable to store the length according to chip and
descriptor content dynamically. Then, the code can be more general.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230522122513.13559-2-pkshih@realtek.com

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

@@ -1819,6 +1819,10 @@ void rtw89_core_query_rxdesc(struct rtw89_dev *rtwdev,
 	shift_len = desc_info->shift << 1; /* 2-byte unit */
 	drv_info_len = desc_info->drv_info_size << 3; /* 8-byte unit */
 	desc_info->offset = data_offset + shift_len + drv_info_len;
+	if (desc_info->long_rxdesc)
+		desc_info->rxd_len = sizeof(struct rtw89_rxdesc_long);
+	else
+		desc_info->rxd_len = sizeof(struct rtw89_rxdesc_short);
 	desc_info->ready = true;
 
 	if (!desc_info->long_rxdesc)

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

@@ -776,6 +776,7 @@ struct rtw89_rx_desc_info {
 	u8 sec_cam_id;
 	u8 mac_id;
 	u16 offset;
+	u16 rxd_len;
 	bool ready;
 };
 
@@ -2824,6 +2825,9 @@ struct rtw89_chip_ops {
 				       s8 pw_ofst, enum rtw89_mac_idx mac_idx);
 	int (*pwr_on_func)(struct rtw89_dev *rtwdev);
 	int (*pwr_off_func)(struct rtw89_dev *rtwdev);
+	void (*query_rxdesc)(struct rtw89_dev *rtwdev,
+			     struct rtw89_rx_desc_info *desc_info,
+			     u8 *data, u32 data_offset);
 	void (*fill_txdesc)(struct rtw89_dev *rtwdev,
 			    struct rtw89_tx_desc_info *desc_info,
 			    void *txdesc);
@@ -4855,6 +4859,16 @@ static inline void rtw89_ctrl_btg(struct rtw89_dev *rtwdev, bool btg)
 		chip->ops->ctrl_btg(rtwdev, btg);
 }
 
+static inline
+void rtw89_chip_query_rxdesc(struct rtw89_dev *rtwdev,
+			     struct rtw89_rx_desc_info *desc_info,
+			     u8 *data, u32 data_offset)
+{
+	const struct rtw89_chip_info *chip = rtwdev->chip;
+
+	chip->ops->query_rxdesc(rtwdev, desc_info, data, data_offset);
+}
+
 static inline
 void rtw89_chip_fill_txdesc(struct rtw89_dev *rtwdev,
 			    struct rtw89_tx_desc_info *desc_info,

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

@@ -265,7 +265,7 @@ static u32 rtw89_pci_rxbd_deliver_skbs(struct rtw89_dev *rtwdev,
 			goto err_sync_device;
 		}
 
-		rtw89_core_query_rxdesc(rtwdev, desc_info, skb->data, rxinfo_size);
+		rtw89_chip_query_rxdesc(rtwdev, desc_info, skb->data, rxinfo_size);
 
 		new = rtw89_alloc_skb_for_rx(rtwdev, desc_info->pkt_size);
 		if (!new)
@@ -274,9 +274,7 @@ static u32 rtw89_pci_rxbd_deliver_skbs(struct rtw89_dev *rtwdev,
 		rx_ring->diliver_skb = new;
 
 		/* first segment has RX desc */
-		offset = desc_info->offset;
-		offset += desc_info->long_rxdesc ? sizeof(struct rtw89_rxdesc_long) :
-			  sizeof(struct rtw89_rxdesc_short);
+		offset = desc_info->offset + desc_info->rxd_len;
 	} else {
 		offset = sizeof(struct rtw89_pci_rxbd_info);
 		if (!new) {
@@ -546,12 +544,10 @@ static u32 rtw89_pci_release_tx_skbs(struct rtw89_dev *rtwdev,
 		return cnt;
 	}
 
-	rtw89_core_query_rxdesc(rtwdev, &desc_info, skb->data, rxinfo_size);
+	rtw89_chip_query_rxdesc(rtwdev, &desc_info, skb->data, rxinfo_size);
 
 	/* first segment has RX desc */
-	offset = desc_info.offset;
-	offset += desc_info.long_rxdesc ? sizeof(struct rtw89_rxdesc_long) :
-					  sizeof(struct rtw89_rxdesc_short);
+	offset = desc_info.offset + desc_info.rxd_len;
 	for (; offset + rpp_size <= rx_info->len; offset += rpp_size) {
 		rpp = (struct rtw89_pci_rpp_fmt *)(skb->data + offset);
 		rtw89_pci_release_rpp(rtwdev, rpp);

drivers/net/wireless/realtek/rtw89/rtw8851b.c

@@ -2298,6 +2298,7 @@ static const struct rtw89_chip_ops rtw8851b_chip_ops = {
 	.set_txpwr_ul_tb_offset	= rtw8851b_set_txpwr_ul_tb_offset,
 	.pwr_on_func		= rtw8851b_pwr_on_func,
 	.pwr_off_func		= rtw8851b_pwr_off_func,
+	.query_rxdesc		= rtw89_core_query_rxdesc,
 	.fill_txdesc		= rtw89_core_fill_txdesc,
 	.fill_txdesc_fwcmd	= rtw89_core_fill_txdesc,
 	.cfg_ctrl_path		= rtw89_mac_cfg_ctrl_path,

drivers/net/wireless/realtek/rtw89/rtw8852a.c

@@ -2050,6 +2050,7 @@ static const struct rtw89_chip_ops rtw8852a_chip_ops = {
 	.set_txpwr_ul_tb_offset	= rtw8852a_set_txpwr_ul_tb_offset,
 	.pwr_on_func		= NULL,
 	.pwr_off_func		= NULL,
+	.query_rxdesc		= rtw89_core_query_rxdesc,
 	.fill_txdesc		= rtw89_core_fill_txdesc,
 	.fill_txdesc_fwcmd	= rtw89_core_fill_txdesc,
 	.cfg_ctrl_path		= rtw89_mac_cfg_ctrl_path,

drivers/net/wireless/realtek/rtw89/rtw8852b.c

@@ -2472,6 +2472,7 @@ static const struct rtw89_chip_ops rtw8852b_chip_ops = {
 	.set_txpwr_ul_tb_offset	= rtw8852b_set_txpwr_ul_tb_offset,
 	.pwr_on_func		= rtw8852b_pwr_on_func,
 	.pwr_off_func		= rtw8852b_pwr_off_func,
+	.query_rxdesc		= rtw89_core_query_rxdesc,
 	.fill_txdesc		= rtw89_core_fill_txdesc,
 	.fill_txdesc_fwcmd	= rtw89_core_fill_txdesc,
 	.cfg_ctrl_path		= rtw89_mac_cfg_ctrl_path,

drivers/net/wireless/realtek/rtw89/rtw8852c.c

@@ -2780,6 +2780,7 @@ static const struct rtw89_chip_ops rtw8852c_chip_ops = {
 	.set_txpwr_ul_tb_offset	= rtw8852c_set_txpwr_ul_tb_offset,
 	.pwr_on_func		= rtw8852c_pwr_on_func,
 	.pwr_off_func		= rtw8852c_pwr_off_func,
+	.query_rxdesc		= rtw89_core_query_rxdesc,
 	.fill_txdesc		= rtw89_core_fill_txdesc_v1,
 	.fill_txdesc_fwcmd	= rtw89_core_fill_txdesc_fwcmd_v1,
 	.cfg_ctrl_path		= rtw89_mac_cfg_ctrl_path_v1,