realtek: eth: define hardware receive rings in config

Do not derive the number of hardware receive rings from the SoC
family. Instead add the information to the configuration
structure. Make use of it during ethernet driver probing.

Signed-off-by: Markus Stockhausen <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/21706
Signed-off-by: Robert Marko <[email protected]>

target/linux/realtek/files-6.12/drivers/net/ethernet/rtl838x_eth.c

@@ -1453,6 +1453,7 @@ static const struct net_device_ops rteth_838x_netdev_ops = {
 static const struct rteth_config rteth_838x_cfg = {
 	.family_id = RTL8380_FAMILY_ID,
 	.cpu_port = RTETH_838X_CPU_PORT,
+	.rx_rings = 8,
 	.net_irq = rteth_83xx_net_irq,
 	.mac_l2_port_ctrl = RTETH_838X_MAC_L2_PORT_CTRL,
 	.dma_if_intr_sts = RTL838X_DMA_IF_INTR_STS,
@@ -1496,6 +1497,7 @@ static const struct net_device_ops rteth_839x_netdev_ops = {
 static const struct rteth_config rteth_839x_cfg = {
 	.family_id = RTL8390_FAMILY_ID,
 	.cpu_port = RTETH_839X_CPU_PORT,
+	.rx_rings = 8,
 	.net_irq = rteth_83xx_net_irq,
 	.mac_l2_port_ctrl = RTETH_839X_MAC_L2_PORT_CTRL,
 	.dma_if_intr_sts = RTL839X_DMA_IF_INTR_STS,
@@ -1539,6 +1541,7 @@ static const struct net_device_ops rteth_930x_netdev_ops = {
 static const struct rteth_config rteth_930x_cfg = {
 	.family_id = RTL9300_FAMILY_ID,
 	.cpu_port = RTETH_930X_CPU_PORT,
+	.rx_rings = 32,
 	.net_irq = rteth_93xx_net_irq,
 	.mac_l2_port_ctrl = RTETH_930X_MAC_L2_PORT_CTRL,
 	.dma_if_intr_rx_runout_sts = RTL930X_DMA_IF_INTR_RX_RUNOUT_STS,
@@ -1587,6 +1590,7 @@ static const struct net_device_ops rteth_931x_netdev_ops = {
 static const struct rteth_config rteth_931x_cfg = {
 	.family_id = RTL9310_FAMILY_ID,
 	.cpu_port = RTETH_931X_CPU_PORT,
+	.rx_rings = 32,
 	.net_irq = rteth_93xx_net_irq,
 	.mac_l2_port_ctrl = RTETH_931X_MAC_L2_PORT_CTRL,
 	.dma_if_intr_rx_runout_sts = RTL931X_DMA_IF_INTR_RX_RUNOUT_STS,
@@ -1643,7 +1647,7 @@ static int rtl838x_eth_probe(struct platform_device *pdev)
 	struct net_device *dev;
 	struct device_node *dn = pdev->dev.of_node;
 	struct rteth_ctrl *ctrl;
-	const struct rteth_config *matchdata;
+	const struct rteth_config *cfg;
 	phy_interface_t phy_mode;
 	struct phylink *phylink;
 	u8 mac_addr[ETH_ALEN] = {0};
@@ -1658,11 +1662,9 @@ static int rtl838x_eth_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	matchdata = (const struct rteth_config *)device_get_match_data(&pdev->dev);
+	cfg = device_get_match_data(&pdev->dev);
 
-	rxrings = (matchdata->family_id == RTL8380_FAMILY_ID ||
-		   matchdata->family_id == RTL8390_FAMILY_ID) ? 8 : 32;
-	rxrings = rxrings > MAX_RXRINGS ? MAX_RXRINGS : rxrings;
+	rxrings = cfg->rx_rings > MAX_RXRINGS ? MAX_RXRINGS : cfg->rx_rings;
 	rxringlen = MAX_ENTRIES / rxrings;
 	rxringlen = rxringlen > MAX_RXLEN ? MAX_RXLEN : rxringlen;
 
@@ -1671,7 +1673,7 @@ static int rtl838x_eth_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	SET_NETDEV_DEV(dev, &pdev->dev);
 	ctrl = netdev_priv(dev);
-	ctrl->r = matchdata;
+	ctrl->r = cfg;
 
 	/* Allocate buffer memory */
 	ctrl->membase = dmam_alloc_coherent(&pdev->dev, rxrings * rxringlen * RING_BUFFER +

target/linux/realtek/files-6.12/drivers/net/ethernet/rtl838x_eth.h

@@ -408,6 +408,7 @@ struct rteth_packet;
 struct rteth_config {
 	int family_id;
 	int cpu_port;
+	int rx_rings;
 	irqreturn_t (*net_irq)(int irq, void *dev_id);
 	int mac_l2_port_ctrl;
 	int dma_if_intr_sts;