Commit feab85c7 authored by Biju Das's avatar Biju Das Committed by David S. Miller
Browse files

ravb: Add support for RZ/G2L SoC 



RZ/G2L SoC has Gigabit Ethernet IP consisting of Ethernet controller
(E-MAC), Internal TCP/IP Offload Engine (TOE) and Dedicated Direct
memory access controller (DMAC).

This patch adds compatible string for RZ/G2L and fills up the
ravb_hw_info struct. Function stubs are added which will be used by
gbeth_hw_info and will be filled incrementally.

Signed-off-by: default avatarBiju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: default avatarLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a92f4f06

drivers/net/ethernet/renesas/ravb.h

+2 −0
Original line number Diff line number Diff line
@@ -956,6 +956,8 @@ enum RAVB_QUEUE { 


#define RX_BUF_SZ	(2048 - ETH_FCS_LEN + sizeof(__sum16))



#define GBETH_RX_BUFF_MAX 8192



struct ravb_tstamp_skb {

	struct list_head list;

	struct sk_buff *skb;

drivers/net/ethernet/renesas/ravb_main.c

+62 −0
Original line number Diff line number Diff line
@@ -83,6 +83,11 @@ static int ravb_config(struct net_device *ndev) 
	return error;

}



static void ravb_set_rate_gbeth(struct net_device *ndev)

{

	/* Place holder */

}



static void ravb_set_rate(struct net_device *ndev)

{

	struct ravb_private *priv = netdev_priv(ndev);
@@ -217,6 +222,11 @@ static int ravb_tx_free(struct net_device *ndev, int q, bool free_txed_only) 
	return free_num;

}



static void ravb_rx_ring_free_gbeth(struct net_device *ndev, int q)

{

	/* Place holder */

}



static void ravb_rx_ring_free(struct net_device *ndev, int q)

{

	struct ravb_private *priv = netdev_priv(ndev);
@@ -283,6 +293,11 @@ static void ravb_ring_free(struct net_device *ndev, int q) 
	priv->tx_skb[q] = NULL;

}



static void ravb_rx_ring_format_gbeth(struct net_device *ndev, int q)

{

	/* Place holder */

}



static void ravb_rx_ring_format(struct net_device *ndev, int q)

{

	struct ravb_private *priv = netdev_priv(ndev);
@@ -356,6 +371,12 @@ static void ravb_ring_format(struct net_device *ndev, int q) 
	desc->dptr = cpu_to_le32((u32)priv->tx_desc_dma[q]);

}



static void *ravb_alloc_rx_desc_gbeth(struct net_device *ndev, int q)

{

	/* Place holder */

	return NULL;

}



static void *ravb_alloc_rx_desc(struct net_device *ndev, int q)

{

	struct ravb_private *priv = netdev_priv(ndev);
@@ -426,6 +447,11 @@ static int ravb_ring_init(struct net_device *ndev, int q) 
	return -ENOMEM;

}



static void ravb_emac_init_gbeth(struct net_device *ndev)

{

	/* Place holder */

}



static void ravb_rcar_emac_init(struct net_device *ndev)

{

	/* Receive frame limit set register */
@@ -461,6 +487,12 @@ static void ravb_emac_init(struct net_device *ndev) 
	info->emac_init(ndev);

}



static int ravb_dmac_init_gbeth(struct net_device *ndev)

{

	/* Place holder */

	return 0;

}



static int ravb_dmac_init_rcar(struct net_device *ndev)

{

	struct ravb_private *priv = netdev_priv(ndev);
@@ -584,6 +616,14 @@ static void ravb_rx_csum(struct sk_buff *skb) 
	skb_trim(skb, skb->len - sizeof(__sum16));

}



/* Packet receive function for Gigabit Ethernet */

static bool ravb_rx_gbeth(struct net_device *ndev, int *quota, int q)

{

	/* Place holder */

	return true;

}



/* Packet receive function for Ethernet AVB */

static bool ravb_rcar_rx(struct net_device *ndev, int *quota, int q)

{

	struct ravb_private *priv = netdev_priv(ndev);
@@ -1949,6 +1989,13 @@ static void ravb_set_rx_csum(struct net_device *ndev, bool enable) 
	spin_unlock_irqrestore(&priv->lock, flags);

}



static int ravb_set_features_gbeth(struct net_device *ndev,

				   netdev_features_t features)

{

	/* Place holder */

	return 0;

}



static int ravb_set_features_rcar(struct net_device *ndev,

				  netdev_features_t features)

{
@@ -2073,12 +2120,27 @@ static const struct ravb_hw_info ravb_gen2_hw_info = { 
	.nc_queue = 1,

};



static const struct ravb_hw_info gbeth_hw_info = {

	.rx_ring_free = ravb_rx_ring_free_gbeth,

	.rx_ring_format = ravb_rx_ring_format_gbeth,

	.alloc_rx_desc = ravb_alloc_rx_desc_gbeth,

	.receive = ravb_rx_gbeth,

	.set_rate = ravb_set_rate_gbeth,

	.set_feature = ravb_set_features_gbeth,

	.dmac_init = ravb_dmac_init_gbeth,

	.emac_init = ravb_emac_init_gbeth,

	.max_rx_len = GBETH_RX_BUFF_MAX + RAVB_ALIGN - 1,

	.aligned_tx = 1,

	.tx_counters = 1,

};



static const struct of_device_id ravb_match_table[] = {

	{ .compatible = "renesas,etheravb-r8a7790", .data = &ravb_gen2_hw_info },

	{ .compatible = "renesas,etheravb-r8a7794", .data = &ravb_gen2_hw_info },

	{ .compatible = "renesas,etheravb-rcar-gen2", .data = &ravb_gen2_hw_info },

	{ .compatible = "renesas,etheravb-r8a7795", .data = &ravb_gen3_hw_info },

	{ .compatible = "renesas,etheravb-rcar-gen3", .data = &ravb_gen3_hw_info },

	{ .compatible = "renesas,rzg2l-gbeth", .data = &gbeth_hw_info },

	{ }

};

MODULE_DEVICE_TABLE(of, ravb_match_table);