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Commit f22a563b authored by Divy Le Ray's avatar Divy Le Ray Committed by David S. Miller
Browse files

cxgb3: add support for the Aquantia 10G-BT phy 



Add support for the Aquantia AQ1002 10G-BaseT phy.

Signed-off-by: default avatarDivy Le Ray <divy@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 74451424

drivers/net/cxgb3/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -5,4 +5,4 @@ 
obj-$(CONFIG_CHELSIO_T3) += cxgb3.o



cxgb3-objs := cxgb3_main.o ael1002.o vsc8211.o t3_hw.o mc5.o \

	      xgmac.o sge.o l2t.o cxgb3_offload.o
 
	      xgmac.o sge.o l2t.o cxgb3_offload.o aq100x.o

drivers/net/cxgb3/aq100x.c

0 → 100644
+355 −0
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2005-2008 Chelsio, Inc. All rights reserved.

 *

 * This software is available to you under a choice of one of two

 * licenses.  You may choose to be licensed under the terms of the GNU

 * General Public License (GPL) Version 2, available from the file

 * COPYING in the main directory of this source tree, or the

 * OpenIB.org BSD license below:

 *

 *     Redistribution and use in source and binary forms, with or

 *     without modification, are permitted provided that the following

 *     conditions are met:

 *

 *      - Redistributions of source code must retain the above

 *        copyright notice, this list of conditions and the following

 *        disclaimer.

 *

 *      - Redistributions in binary form must reproduce the above

 *        copyright notice, this list of conditions and the following

 *        disclaimer in the documentation and/or other materials

 *        provided with the distribution.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 * SOFTWARE.

 */



#include "common.h"

#include "regs.h"



enum {

	/* MDIO_DEV_PMA_PMD registers */

	AQ_LINK_STAT	= 0xe800,

	AQ_IMASK_PMA	= 0xf000,



	/* MDIO_DEV_XGXS registers */

	AQ_XAUI_RX_CFG	= 0xc400,

	AQ_XAUI_TX_CFG	= 0xe400,



	/* MDIO_DEV_ANEG registers */

	AQ_100M_CTRL	= 0x0010,

	AQ_10G_CTRL	= 0x0020,

	AQ_1G_CTRL	= 0xc400,

	AQ_ANEG_STAT	= 0xc800,



	/* MDIO_DEV_VEND1 registers */

	AQ_FW_VERSION	= 0x0020,

	AQ_IFLAG_GLOBAL	= 0xfc00,

	AQ_IMASK_GLOBAL	= 0xff00,

};



#define AQBIT(x)	(1 << (x))

#define IMASK_PMA	AQBIT(0x2)

#define IMASK_GLOBAL	AQBIT(0xf)

#define ADV_1G_FULL	AQBIT(0xf)

#define ADV_1G_HALF	AQBIT(0xe)

#define ADV_10G_FULL	AQBIT(0xc)

#define AQ_RESET	(AQBIT(0xe) | AQBIT(0xf))

#define AQ_LOWPOWER	AQBIT(0xb)



static int aq100x_reset(struct cphy *phy, int wait)

{

	/*

	 * Ignore the caller specified wait time; always wait for the reset to

	 * complete. Can take up to 3s.

	 */

	int err = t3_phy_reset(phy, MDIO_MMD_VEND1, 3000);



	if (err)

		CH_WARN(phy->adapter, "PHY%d: reset failed (0x%x).\n",

			phy->mdio.prtad, err);



	return err;

}



static int aq100x_intr_enable(struct cphy *phy)

{

	int err = t3_mdio_write(phy, MDIO_MMD_PMAPMD, AQ_IMASK_PMA, IMASK_PMA);

	if (err)

		return err;



	err = t3_mdio_write(phy, MDIO_MMD_VEND1, AQ_IMASK_GLOBAL, IMASK_GLOBAL);

	return err;

}



static int aq100x_intr_disable(struct cphy *phy)

{

	return t3_mdio_write(phy, MDIO_MMD_VEND1, AQ_IMASK_GLOBAL, 0);

}



static int aq100x_intr_clear(struct cphy *phy)

{

	unsigned int v;



	t3_mdio_read(phy, MDIO_MMD_VEND1, AQ_IFLAG_GLOBAL, &v);

	t3_mdio_read(phy, MDIO_MMD_PMAPMD, MDIO_STAT1, &v);



	return 0;

}



static int aq100x_intr_handler(struct cphy *phy)

{

	int err;

	unsigned int cause, v;



	err = t3_mdio_read(phy, MDIO_MMD_VEND1, AQ_IFLAG_GLOBAL, &cause);

	if (err)

		return err;



	/* Read (and reset) the latching version of the status */

	t3_mdio_read(phy, MDIO_MMD_PMAPMD, MDIO_STAT1, &v);



	return cphy_cause_link_change;

}



static int aq100x_power_down(struct cphy *phy, int off)

{

	return mdio_set_flag(&phy->mdio, phy->mdio.prtad,

			     MDIO_MMD_PMAPMD, MDIO_CTRL1,

			     MDIO_CTRL1_LPOWER, off);

}



static int aq100x_autoneg_enable(struct cphy *phy)

{

	int err;



	err = aq100x_power_down(phy, 0);

	if (!err)

		err = mdio_set_flag(&phy->mdio, phy->mdio.prtad,

				    MDIO_MMD_AN, MDIO_CTRL1,

				    BMCR_ANENABLE | BMCR_ANRESTART, 1);



	return err;

}



static int aq100x_autoneg_restart(struct cphy *phy)

{

	int err;



	err = aq100x_power_down(phy, 0);

	if (!err)

		err = mdio_set_flag(&phy->mdio, phy->mdio.prtad,

				    MDIO_MMD_AN, MDIO_CTRL1,

				    BMCR_ANENABLE | BMCR_ANRESTART, 1);



	return err;

}



static int aq100x_advertise(struct cphy *phy, unsigned int advertise_map)

{

	unsigned int adv;

	int err;



	/* 10G advertisement */

	adv = 0;

	if (advertise_map & ADVERTISED_10000baseT_Full)

		adv |= ADV_10G_FULL;

	err = t3_mdio_change_bits(phy, MDIO_MMD_AN, AQ_10G_CTRL,

				  ADV_10G_FULL, adv);

	if (err)

		return err;



	/* 1G advertisement */

	adv = 0;

	if (advertise_map & ADVERTISED_1000baseT_Full)

		adv |= ADV_1G_FULL;

	if (advertise_map & ADVERTISED_1000baseT_Half)

		adv |= ADV_1G_HALF;

	err = t3_mdio_change_bits(phy, MDIO_MMD_AN, AQ_1G_CTRL,

				  ADV_1G_FULL | ADV_1G_HALF, adv);

	if (err)

		return err;



	/* 100M, pause advertisement */

	adv = 0;

	if (advertise_map & ADVERTISED_100baseT_Half)

		adv |= ADVERTISE_100HALF;

	if (advertise_map & ADVERTISED_100baseT_Full)

		adv |= ADVERTISE_100FULL;

	if (advertise_map & ADVERTISED_Pause)

		adv |= ADVERTISE_PAUSE_CAP;

	if (advertise_map & ADVERTISED_Asym_Pause)

		adv |= ADVERTISE_PAUSE_ASYM;

	err = t3_mdio_change_bits(phy, MDIO_MMD_AN, AQ_100M_CTRL, 0xfe0, adv);



	return err;

}



static int aq100x_set_loopback(struct cphy *phy, int mmd, int dir, int enable)

{

	return mdio_set_flag(&phy->mdio, phy->mdio.prtad,

			     MDIO_MMD_PMAPMD, MDIO_CTRL1,

			     BMCR_LOOPBACK, enable);

}



static int aq100x_set_speed_duplex(struct cphy *phy, int speed, int duplex)

{

	/* no can do */

	return -1;

}



static int aq100x_get_link_status(struct cphy *phy, int *link_ok,

				  int *speed, int *duplex, int *fc)

{

	int err;

	unsigned int v;



	if (link_ok) {

		err = t3_mdio_read(phy, MDIO_MMD_PMAPMD, AQ_LINK_STAT, &v);

		if (err)

			return err;



		*link_ok = v & 1;

		if (!*link_ok)

			return 0;

	}



	err = t3_mdio_read(phy, MDIO_MMD_AN, AQ_ANEG_STAT, &v);

	if (err)

		return err;



	if (speed) {

		switch (v & 0x6) {

		case 0x6:

			*speed = SPEED_10000;

			break;

		case 0x4:

			*speed = SPEED_1000;

			break;

		case 0x2:

			*speed = SPEED_100;

			break;

		case 0x0:

			*speed = SPEED_10;

			break;

		}

	}



	if (duplex)

		*duplex = v & 1 ? DUPLEX_FULL : DUPLEX_HALF;



	return 0;

}



static struct cphy_ops aq100x_ops = {

	.reset             = aq100x_reset,

	.intr_enable       = aq100x_intr_enable,

	.intr_disable      = aq100x_intr_disable,

	.intr_clear        = aq100x_intr_clear,

	.intr_handler      = aq100x_intr_handler,

	.autoneg_enable    = aq100x_autoneg_enable,

	.autoneg_restart   = aq100x_autoneg_restart,

	.advertise         = aq100x_advertise,

	.set_loopback      = aq100x_set_loopback,

	.set_speed_duplex  = aq100x_set_speed_duplex,

	.get_link_status   = aq100x_get_link_status,

	.power_down        = aq100x_power_down,

	.mmds 		   = MDIO_DEVS_PMAPMD | MDIO_DEVS_PCS | MDIO_DEVS_PHYXS,

};



int t3_aq100x_phy_prep(struct cphy *phy, struct adapter *adapter, int phy_addr,

		       const struct mdio_ops *mdio_ops)

{

	unsigned int v, v2, gpio, wait;

	int err;



	cphy_init(phy, adapter, phy_addr, &aq100x_ops, mdio_ops,

		  SUPPORTED_1000baseT_Full | SUPPORTED_10000baseT_Full |

		  SUPPORTED_Autoneg | SUPPORTED_AUI, "1000/10GBASE-T");



	/*

	 * The PHY has been out of reset ever since the system powered up.  So

	 * we do a hard reset over here.

	 */

	gpio = phy_addr ? F_GPIO10_OUT_VAL : F_GPIO6_OUT_VAL;

	t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, gpio, 0);

	msleep(1);

	t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, gpio, gpio);



	/*

	 * Give it enough time to load the firmware and get ready for mdio.

	 */

	msleep(1000);

	wait = 500; /* in 10ms increments */

	do {

		err = t3_mdio_read(phy, MDIO_MMD_VEND1, MDIO_CTRL1, &v);

		if (err || v == 0xffff) {



			/* Allow prep_adapter to succeed when ffff is read */



			CH_WARN(adapter, "PHY%d: reset failed (0x%x, 0x%x).\n",

				phy_addr, err, v);

			goto done;

		}



		v &= AQ_RESET;

		if (v)

			msleep(10);

	} while (v && --wait);

	if (v) {

		CH_WARN(adapter, "PHY%d: reset timed out (0x%x).\n",

			phy_addr, v);



		goto done; /* let prep_adapter succeed */

	}



	/* Datasheet says 3s max but this has been observed */

	wait = (500 - wait) * 10 + 1000;

	if (wait > 3000)

		CH_WARN(adapter, "PHY%d: reset took %ums\n", phy_addr, wait);



	/* Firmware version check. */

	t3_mdio_read(phy, MDIO_MMD_VEND1, AQ_FW_VERSION, &v);

	if (v != 30) {

		CH_WARN(adapter, "PHY%d: unsupported firmware %d\n",

			phy_addr, v);

		return 0; /* allow t3_prep_adapter to succeed */

	}



	/*

	 * The PHY should start in really-low-power mode.  Prepare it for normal

	 * operations.

	 */

	err = t3_mdio_read(phy, MDIO_MMD_VEND1, MDIO_CTRL1, &v);

	if (err)

		return err;

	if (v & AQ_LOWPOWER) {

		err = t3_mdio_change_bits(phy, MDIO_MMD_VEND1, MDIO_CTRL1,

					  AQ_LOWPOWER, 0);

		if (err)

			return err;

		msleep(10);

	} else

		CH_WARN(adapter, "PHY%d does not start in low power mode.\n",

			phy_addr);



	/*

	 * Verify XAUI settings, but let prep succeed no matter what.

	 */

	v = v2 = 0;

	t3_mdio_read(phy, MDIO_MMD_PHYXS, AQ_XAUI_RX_CFG, &v);

	t3_mdio_read(phy, MDIO_MMD_PHYXS, AQ_XAUI_TX_CFG, &v2);

	if (v != 0x1b || v2 != 0x1b)

		CH_WARN(adapter,

			"PHY%d: incorrect XAUI settings (0x%x, 0x%x).\n",

			phy_addr, v, v2);



done:

	return err;

}

drivers/net/cxgb3/common.h

+2 −0
Original line number Diff line number Diff line
@@ -808,4 +808,6 @@ int t3_qt2045_phy_prep(struct cphy *phy, struct adapter *adapter, int phy_addr, 
		       const struct mdio_ops *mdio_ops);

int t3_xaui_direct_phy_prep(struct cphy *phy, struct adapter *adapter,

			    int phy_addr, const struct mdio_ops *mdio_ops);

int t3_aq100x_phy_prep(struct cphy *phy, struct adapter *adapter,

			    int phy_addr, const struct mdio_ops *mdio_ops);

#endif				/* __CHELSIO_COMMON_H */

drivers/net/cxgb3/t3_hw.c

+1 −1
Original line number Diff line number Diff line
@@ -557,7 +557,7 @@ static const struct port_type_info port_types[] = { 
	{ t3_qt2045_phy_prep },

	{ t3_ael1006_phy_prep },

	{ NULL },

	{ NULL },

	{ t3_aq100x_phy_prep },

	{ t3_ael2020_phy_prep },

};