mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-16 01:04:08 +08:00
1d68e93d65
Dual licensing, needed for OFED 1.2 Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
229 lines
6.6 KiB
C
229 lines
6.6 KiB
C
/*
|
|
* Copyright (c) 2005-2007 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"
|
|
|
|
/* VSC8211 PHY specific registers. */
|
|
enum {
|
|
VSC8211_INTR_ENABLE = 25,
|
|
VSC8211_INTR_STATUS = 26,
|
|
VSC8211_AUX_CTRL_STAT = 28,
|
|
};
|
|
|
|
enum {
|
|
VSC_INTR_RX_ERR = 1 << 0,
|
|
VSC_INTR_MS_ERR = 1 << 1, /* master/slave resolution error */
|
|
VSC_INTR_CABLE = 1 << 2, /* cable impairment */
|
|
VSC_INTR_FALSE_CARR = 1 << 3, /* false carrier */
|
|
VSC_INTR_MEDIA_CHG = 1 << 4, /* AMS media change */
|
|
VSC_INTR_RX_FIFO = 1 << 5, /* Rx FIFO over/underflow */
|
|
VSC_INTR_TX_FIFO = 1 << 6, /* Tx FIFO over/underflow */
|
|
VSC_INTR_DESCRAMBL = 1 << 7, /* descrambler lock-lost */
|
|
VSC_INTR_SYMBOL_ERR = 1 << 8, /* symbol error */
|
|
VSC_INTR_NEG_DONE = 1 << 10, /* autoneg done */
|
|
VSC_INTR_NEG_ERR = 1 << 11, /* autoneg error */
|
|
VSC_INTR_LINK_CHG = 1 << 13, /* link change */
|
|
VSC_INTR_ENABLE = 1 << 15, /* interrupt enable */
|
|
};
|
|
|
|
#define CFG_CHG_INTR_MASK (VSC_INTR_LINK_CHG | VSC_INTR_NEG_ERR | \
|
|
VSC_INTR_NEG_DONE)
|
|
#define INTR_MASK (CFG_CHG_INTR_MASK | VSC_INTR_TX_FIFO | VSC_INTR_RX_FIFO | \
|
|
VSC_INTR_ENABLE)
|
|
|
|
/* PHY specific auxiliary control & status register fields */
|
|
#define S_ACSR_ACTIPHY_TMR 0
|
|
#define M_ACSR_ACTIPHY_TMR 0x3
|
|
#define V_ACSR_ACTIPHY_TMR(x) ((x) << S_ACSR_ACTIPHY_TMR)
|
|
|
|
#define S_ACSR_SPEED 3
|
|
#define M_ACSR_SPEED 0x3
|
|
#define G_ACSR_SPEED(x) (((x) >> S_ACSR_SPEED) & M_ACSR_SPEED)
|
|
|
|
#define S_ACSR_DUPLEX 5
|
|
#define F_ACSR_DUPLEX (1 << S_ACSR_DUPLEX)
|
|
|
|
#define S_ACSR_ACTIPHY 6
|
|
#define F_ACSR_ACTIPHY (1 << S_ACSR_ACTIPHY)
|
|
|
|
/*
|
|
* Reset the PHY. This PHY completes reset immediately so we never wait.
|
|
*/
|
|
static int vsc8211_reset(struct cphy *cphy, int wait)
|
|
{
|
|
return t3_phy_reset(cphy, 0, 0);
|
|
}
|
|
|
|
static int vsc8211_intr_enable(struct cphy *cphy)
|
|
{
|
|
return mdio_write(cphy, 0, VSC8211_INTR_ENABLE, INTR_MASK);
|
|
}
|
|
|
|
static int vsc8211_intr_disable(struct cphy *cphy)
|
|
{
|
|
return mdio_write(cphy, 0, VSC8211_INTR_ENABLE, 0);
|
|
}
|
|
|
|
static int vsc8211_intr_clear(struct cphy *cphy)
|
|
{
|
|
u32 val;
|
|
|
|
/* Clear PHY interrupts by reading the register. */
|
|
return mdio_read(cphy, 0, VSC8211_INTR_STATUS, &val);
|
|
}
|
|
|
|
static int vsc8211_autoneg_enable(struct cphy *cphy)
|
|
{
|
|
return t3_mdio_change_bits(cphy, 0, MII_BMCR, BMCR_PDOWN | BMCR_ISOLATE,
|
|
BMCR_ANENABLE | BMCR_ANRESTART);
|
|
}
|
|
|
|
static int vsc8211_autoneg_restart(struct cphy *cphy)
|
|
{
|
|
return t3_mdio_change_bits(cphy, 0, MII_BMCR, BMCR_PDOWN | BMCR_ISOLATE,
|
|
BMCR_ANRESTART);
|
|
}
|
|
|
|
static int vsc8211_get_link_status(struct cphy *cphy, int *link_ok,
|
|
int *speed, int *duplex, int *fc)
|
|
{
|
|
unsigned int bmcr, status, lpa, adv;
|
|
int err, sp = -1, dplx = -1, pause = 0;
|
|
|
|
err = mdio_read(cphy, 0, MII_BMCR, &bmcr);
|
|
if (!err)
|
|
err = mdio_read(cphy, 0, MII_BMSR, &status);
|
|
if (err)
|
|
return err;
|
|
|
|
if (link_ok) {
|
|
/*
|
|
* BMSR_LSTATUS is latch-low, so if it is 0 we need to read it
|
|
* once more to get the current link state.
|
|
*/
|
|
if (!(status & BMSR_LSTATUS))
|
|
err = mdio_read(cphy, 0, MII_BMSR, &status);
|
|
if (err)
|
|
return err;
|
|
*link_ok = (status & BMSR_LSTATUS) != 0;
|
|
}
|
|
if (!(bmcr & BMCR_ANENABLE)) {
|
|
dplx = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
|
|
if (bmcr & BMCR_SPEED1000)
|
|
sp = SPEED_1000;
|
|
else if (bmcr & BMCR_SPEED100)
|
|
sp = SPEED_100;
|
|
else
|
|
sp = SPEED_10;
|
|
} else if (status & BMSR_ANEGCOMPLETE) {
|
|
err = mdio_read(cphy, 0, VSC8211_AUX_CTRL_STAT, &status);
|
|
if (err)
|
|
return err;
|
|
|
|
dplx = (status & F_ACSR_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF;
|
|
sp = G_ACSR_SPEED(status);
|
|
if (sp == 0)
|
|
sp = SPEED_10;
|
|
else if (sp == 1)
|
|
sp = SPEED_100;
|
|
else
|
|
sp = SPEED_1000;
|
|
|
|
if (fc && dplx == DUPLEX_FULL) {
|
|
err = mdio_read(cphy, 0, MII_LPA, &lpa);
|
|
if (!err)
|
|
err = mdio_read(cphy, 0, MII_ADVERTISE, &adv);
|
|
if (err)
|
|
return err;
|
|
|
|
if (lpa & adv & ADVERTISE_PAUSE_CAP)
|
|
pause = PAUSE_RX | PAUSE_TX;
|
|
else if ((lpa & ADVERTISE_PAUSE_CAP) &&
|
|
(lpa & ADVERTISE_PAUSE_ASYM) &&
|
|
(adv & ADVERTISE_PAUSE_ASYM))
|
|
pause = PAUSE_TX;
|
|
else if ((lpa & ADVERTISE_PAUSE_ASYM) &&
|
|
(adv & ADVERTISE_PAUSE_CAP))
|
|
pause = PAUSE_RX;
|
|
}
|
|
}
|
|
if (speed)
|
|
*speed = sp;
|
|
if (duplex)
|
|
*duplex = dplx;
|
|
if (fc)
|
|
*fc = pause;
|
|
return 0;
|
|
}
|
|
|
|
static int vsc8211_power_down(struct cphy *cphy, int enable)
|
|
{
|
|
return t3_mdio_change_bits(cphy, 0, MII_BMCR, BMCR_PDOWN,
|
|
enable ? BMCR_PDOWN : 0);
|
|
}
|
|
|
|
static int vsc8211_intr_handler(struct cphy *cphy)
|
|
{
|
|
unsigned int cause;
|
|
int err, cphy_cause = 0;
|
|
|
|
err = mdio_read(cphy, 0, VSC8211_INTR_STATUS, &cause);
|
|
if (err)
|
|
return err;
|
|
|
|
cause &= INTR_MASK;
|
|
if (cause & CFG_CHG_INTR_MASK)
|
|
cphy_cause |= cphy_cause_link_change;
|
|
if (cause & (VSC_INTR_RX_FIFO | VSC_INTR_TX_FIFO))
|
|
cphy_cause |= cphy_cause_fifo_error;
|
|
return cphy_cause;
|
|
}
|
|
|
|
static struct cphy_ops vsc8211_ops = {
|
|
.reset = vsc8211_reset,
|
|
.intr_enable = vsc8211_intr_enable,
|
|
.intr_disable = vsc8211_intr_disable,
|
|
.intr_clear = vsc8211_intr_clear,
|
|
.intr_handler = vsc8211_intr_handler,
|
|
.autoneg_enable = vsc8211_autoneg_enable,
|
|
.autoneg_restart = vsc8211_autoneg_restart,
|
|
.advertise = t3_phy_advertise,
|
|
.set_speed_duplex = t3_set_phy_speed_duplex,
|
|
.get_link_status = vsc8211_get_link_status,
|
|
.power_down = vsc8211_power_down,
|
|
};
|
|
|
|
void t3_vsc8211_phy_prep(struct cphy *phy, struct adapter *adapter,
|
|
int phy_addr, const struct mdio_ops *mdio_ops)
|
|
{
|
|
cphy_init(phy, adapter, phy_addr, &vsc8211_ops, mdio_ops);
|
|
}
|