ravb: Add tsrq to struct ravb_hw_info

R-Car AVB-DMAC has 4 Transmit start request queues, whereas
RZ/G2L has only 1 Transmit start request queue.

Add a tsrq variable to struct ravb_hw_info to handle this
difference.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/ravb.h

@@ -997,6 +997,7 @@ struct ravb_hw_info {
 	netdev_features_t net_features;
 	int stats_len;
 	size_t max_rx_len;
+	u32 tsrq;
 	unsigned aligned_tx: 1;
 
 	/* hardware features */

drivers/net/ethernet/renesas/ravb_main.c

@@ -790,11 +790,13 @@ static void ravb_rcv_snd_enable(struct net_device *ndev)
 /* function for waiting dma process finished */
 static int ravb_stop_dma(struct net_device *ndev)
 {
+	struct ravb_private *priv = netdev_priv(ndev);
+	const struct ravb_hw_info *info = priv->info;
 	int error;
 
 	/* Wait for stopping the hardware TX process */
-	error = ravb_wait(ndev, TCCR,
-			  TCCR_TSRQ0 | TCCR_TSRQ1 | TCCR_TSRQ2 | TCCR_TSRQ3, 0);
+	error = ravb_wait(ndev, TCCR, info->tsrq, 0);
+
 	if (error)
 		return error;
 
@@ -2128,6 +2130,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = {
 	.net_features = NETIF_F_RXCSUM,
 	.stats_len = ARRAY_SIZE(ravb_gstrings_stats),
 	.max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
+	.tsrq = TCCR_TSRQ0 | TCCR_TSRQ1 | TCCR_TSRQ2 | TCCR_TSRQ3,
 	.internal_delay = 1,
 	.tx_counters = 1,
 	.multi_irqs = 1,
@@ -2150,6 +2153,7 @@ static const struct ravb_hw_info ravb_gen2_hw_info = {
 	.net_features = NETIF_F_RXCSUM,
 	.stats_len = ARRAY_SIZE(ravb_gstrings_stats),
 	.max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
+	.tsrq = TCCR_TSRQ0 | TCCR_TSRQ1 | TCCR_TSRQ2 | TCCR_TSRQ3,
 	.aligned_tx = 1,
 	.gptp = 1,
 	.nc_queue = 1,
@@ -2165,6 +2169,7 @@ static const struct ravb_hw_info gbeth_hw_info = {
 	.dmac_init = ravb_dmac_init_gbeth,
 	.emac_init = ravb_emac_init_gbeth,
 	.max_rx_len = GBETH_RX_BUFF_MAX + RAVB_ALIGN - 1,
+	.tsrq = TCCR_TSRQ0,
 	.aligned_tx = 1,
 	.tx_counters = 1,
 };