netdev - [PATCH 07/10] ravb: Add tsrq to struct ravb_hw

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Message-Id: <20211001150636.7500-8-biju.das.jz@bp.renesas.com>
Date:   Fri,  1 Oct 2021 16:06:33 +0100
From:   Biju Das <biju.das.jz@...renesas.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Biju Das <biju.das.jz@...renesas.com>,
        Sergei Shtylyov <sergei.shtylyov@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Sergey Shtylyov <s.shtylyov@...russia.ru>,
        Adam Ford <aford173@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Yuusuke Ashizuka <ashiduka@...itsu.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Chris Paterson <Chris.Paterson2@...esas.com>,
        Biju Das <biju.das@...renesas.com>,
        Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 07/10] 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@...renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
RFC->v1:
 * Added tsrq variable instead of multi_tsrq feature bit.
---
 drivers/net/ethernet/renesas/ravb.h      | 1 +
 drivers/net/ethernet/renesas/ravb_main.c | 9 +++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index 9cd3a15743b4..c586070193ef 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/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 */
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index ac141a491ca2..4784832bd93c 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/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,
 };
-- 
2.17.1