Commit 660e3d95 authored by Biju Das's avatar Biju Das Committed by David S. Miller
Browse files

ravb: Initialize GbEthernet DMAC 



Initialize GbEthernet DMAC found on RZ/G2L SoC.

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 feab85c7

drivers/net/ethernet/renesas/ravb.h

+2 −1
Original line number Diff line number Diff line
@@ -81,6 +81,7 @@ enum ravb_reg { 
	RQC3	= 0x00A0,

	RQC4	= 0x00A4,

	RPC	= 0x00B0,

	RTC	= 0x00B4,	/* R-Car Gen3 and RZ/G2L only */

	UFCW	= 0x00BC,

	UFCS	= 0x00C0,

	UFCV0	= 0x00C4,
@@ -193,7 +194,7 @@ enum ravb_reg { 
	GECMR	= 0x05b0,

	MAHR	= 0x05c0,

	MALR	= 0x05c8,

	TROCR	= 0x0700,	/* R-Car Gen3 only */

	TROCR	= 0x0700,	/* R-Car Gen3 and RZ/G2L only */

	CEFCR	= 0x0740,

	FRECR	= 0x0748,

	TSFRCR	= 0x0750,

drivers/net/ethernet/renesas/ravb_main.c

+29 −1
Original line number Diff line number Diff line
@@ -489,7 +489,35 @@ static void ravb_emac_init(struct net_device *ndev) 


static int ravb_dmac_init_gbeth(struct net_device *ndev)

{

	/* Place holder */

	int error;



	error = ravb_ring_init(ndev, RAVB_BE);

	if (error)

		return error;



	/* Descriptor format */

	ravb_ring_format(ndev, RAVB_BE);



	/* Set AVB RX */

	ravb_write(ndev, 0x60000000, RCR);



	/* Set Max Frame Length (RTC) */

	ravb_write(ndev, 0x7ffc0000 | GBETH_RX_BUFF_MAX, RTC);



	/* Set FIFO size */

	ravb_write(ndev, 0x00222200, TGC);



	ravb_write(ndev, 0, TCCR);



	/* Frame receive */

	ravb_write(ndev, RIC0_FRE0, RIC0);

	/* Disable FIFO full warning */

	ravb_write(ndev, 0x0, RIC1);

	/* Receive FIFO full error, descriptor empty */

	ravb_write(ndev, RIC2_QFE0 | RIC2_RFFE, RIC2);



	ravb_write(ndev, TIC_FTE0, TIC);



	return 0;

}