Commit ab41ca34 authored by Murali Krishna Policharla's avatar Murali Krishna Policharla Committed by David S. Miller
Browse files

net: phy: bcm7xx: add jumbo frame configuration to PHY 



The BCM7XX PHY family requires special configuration to pass jumbo
frames. Do that during initial PHY setup.

Signed-off-by: default avatarMurali Krishna Policharla <murali.policharla@broadcom.com>
Reviewed-by: default avatarScott Branden <scott.branden@broadcom.com>
Signed-off-by: default avatarVladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 22f33971

drivers/net/phy/bcm-phy-lib.c

+22 −0
Original line number Diff line number Diff line
@@ -423,6 +423,28 @@ int bcm_phy_28nm_a0b0_afe_config_init(struct phy_device *phydev) 
}

EXPORT_SYMBOL_GPL(bcm_phy_28nm_a0b0_afe_config_init);



int bcm_phy_enable_jumbo(struct phy_device *phydev)

{

	int ret;



	ret = bcm54xx_auxctl_read(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL);

	if (ret < 0)

		return ret;



	/* Enable extended length packet reception */

	ret = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,

				   ret | MII_BCM54XX_AUXCTL_ACTL_EXT_PKT_LEN);

	if (ret < 0)

		return ret;



	/* Enable the elastic FIFO for raising the transmission limit from

	 * 4.5KB to 10KB, at the expense of an additional 16 ns in propagation

	 * latency.

	 */

	return phy_set_bits(phydev, MII_BCM54XX_ECR, MII_BCM54XX_ECR_FIFOE);

}

EXPORT_SYMBOL_GPL(bcm_phy_enable_jumbo);



MODULE_DESCRIPTION("Broadcom PHY Library");

MODULE_LICENSE("GPL v2");

MODULE_AUTHOR("Broadcom Corporation");

drivers/net/phy/bcm-phy-lib.h

+1 −0
Original line number Diff line number Diff line
@@ -65,5 +65,6 @@ void bcm_phy_get_stats(struct phy_device *phydev, u64 *shadow, 
		       struct ethtool_stats *stats, u64 *data);

void bcm_phy_r_rc_cal_reset(struct phy_device *phydev);

int bcm_phy_28nm_a0b0_afe_config_init(struct phy_device *phydev);

int bcm_phy_enable_jumbo(struct phy_device *phydev);



#endif /* _LINUX_BCM_PHY_LIB_H */

drivers/net/phy/bcm7xxx.c

+4 −0
Original line number Diff line number Diff line
@@ -178,6 +178,10 @@ static int bcm7xxx_28nm_config_init(struct phy_device *phydev) 
		break;

	}



	if (ret)

		return ret;



	ret =  bcm_phy_enable_jumbo(phydev);

	if (ret)

		return ret;

include/linux/brcmphy.h

+2 −0
Original line number Diff line number Diff line
@@ -79,6 +79,7 @@ 
#define MII_BCM54XX_ECR		0x10	/* BCM54xx extended control register */

#define MII_BCM54XX_ECR_IM	0x1000	/* Interrupt mask */

#define MII_BCM54XX_ECR_IF	0x0800	/* Interrupt force */

#define MII_BCM54XX_ECR_FIFOE	0x0001	/* FIFO elasticity */



#define MII_BCM54XX_ESR		0x11	/* BCM54xx extended status register */

#define MII_BCM54XX_ESR_IS	0x1000	/* Interrupt status */
@@ -119,6 +120,7 @@ 
#define MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL	0x00

#define MII_BCM54XX_AUXCTL_ACTL_TX_6DB		0x0400

#define MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA	0x0800

#define MII_BCM54XX_AUXCTL_ACTL_EXT_PKT_LEN	0x4000



#define MII_BCM54XX_AUXCTL_SHDWSEL_MISC			0x07

#define MII_BCM54XX_AUXCTL_SHDWSEL_MISC_WIRESPEED_EN	0x0010

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