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https://github.com/brain-hackers/u-boot-brain
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![Florian Fainelli](/assets/img/avatar_default.png)
Add a minimalistic Broadcom BCM53xx (roboswitch) switch driver similar to the Marvell MV88E617x. This takes care of configuring the minimum amount out of the switch hardware such that each user visible port (configurable) and the CPU port can forward packets between each other while preserving isolation with other ports. This is useful for e.g: the Lamobo R1 board featuring a Broadcom BCM53125 switch. Reviewed-by: Stefan Roese <sr@denx.de> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
936 lines
21 KiB
C
936 lines
21 KiB
C
/*
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* Generic PHY Management code
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* Copyright 2011 Freescale Semiconductor, Inc.
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* author Andy Fleming
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*
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* Based loosely off of Linux's PHY Lib
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*/
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#include <config.h>
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#include <common.h>
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#include <console.h>
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#include <dm.h>
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#include <malloc.h>
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#include <net.h>
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#include <command.h>
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#include <miiphy.h>
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#include <phy.h>
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#include <errno.h>
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#include <linux/err.h>
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#include <linux/compiler.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* Generic PHY support and helper functions */
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/**
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* genphy_config_advert - sanitize and advertise auto-negotation parameters
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* @phydev: target phy_device struct
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*
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* Description: Writes MII_ADVERTISE with the appropriate values,
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* after sanitizing the values to make sure we only advertise
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* what is supported. Returns < 0 on error, 0 if the PHY's advertisement
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* hasn't changed, and > 0 if it has changed.
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*/
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static int genphy_config_advert(struct phy_device *phydev)
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{
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u32 advertise;
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int oldadv, adv, bmsr;
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int err, changed = 0;
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/* Only allow advertising what this PHY supports */
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phydev->advertising &= phydev->supported;
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advertise = phydev->advertising;
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/* Setup standard advertisement */
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adv = phy_read(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE);
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oldadv = adv;
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if (adv < 0)
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return adv;
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adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP |
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ADVERTISE_PAUSE_ASYM);
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if (advertise & ADVERTISED_10baseT_Half)
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adv |= ADVERTISE_10HALF;
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if (advertise & ADVERTISED_10baseT_Full)
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adv |= ADVERTISE_10FULL;
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if (advertise & ADVERTISED_100baseT_Half)
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adv |= ADVERTISE_100HALF;
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if (advertise & ADVERTISED_100baseT_Full)
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adv |= ADVERTISE_100FULL;
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if (advertise & ADVERTISED_Pause)
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adv |= ADVERTISE_PAUSE_CAP;
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if (advertise & ADVERTISED_Asym_Pause)
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adv |= ADVERTISE_PAUSE_ASYM;
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if (advertise & ADVERTISED_1000baseX_Half)
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adv |= ADVERTISE_1000XHALF;
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if (advertise & ADVERTISED_1000baseX_Full)
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adv |= ADVERTISE_1000XFULL;
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if (adv != oldadv) {
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err = phy_write(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE, adv);
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if (err < 0)
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return err;
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changed = 1;
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}
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bmsr = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
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if (bmsr < 0)
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return bmsr;
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/* Per 802.3-2008, Section 22.2.4.2.16 Extended status all
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* 1000Mbits/sec capable PHYs shall have the BMSR_ESTATEN bit set to a
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* logical 1.
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*/
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if (!(bmsr & BMSR_ESTATEN))
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return changed;
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/* Configure gigabit if it's supported */
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adv = phy_read(phydev, MDIO_DEVAD_NONE, MII_CTRL1000);
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oldadv = adv;
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if (adv < 0)
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return adv;
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adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
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if (phydev->supported & (SUPPORTED_1000baseT_Half |
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SUPPORTED_1000baseT_Full)) {
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if (advertise & SUPPORTED_1000baseT_Half)
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adv |= ADVERTISE_1000HALF;
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if (advertise & SUPPORTED_1000baseT_Full)
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adv |= ADVERTISE_1000FULL;
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}
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if (adv != oldadv)
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changed = 1;
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err = phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, adv);
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if (err < 0)
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return err;
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return changed;
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}
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/**
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* genphy_setup_forced - configures/forces speed/duplex from @phydev
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* @phydev: target phy_device struct
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*
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* Description: Configures MII_BMCR to force speed/duplex
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* to the values in phydev. Assumes that the values are valid.
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*/
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static int genphy_setup_forced(struct phy_device *phydev)
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{
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int err;
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int ctl = BMCR_ANRESTART;
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phydev->pause = phydev->asym_pause = 0;
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if (SPEED_1000 == phydev->speed)
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ctl |= BMCR_SPEED1000;
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else if (SPEED_100 == phydev->speed)
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ctl |= BMCR_SPEED100;
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if (DUPLEX_FULL == phydev->duplex)
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ctl |= BMCR_FULLDPLX;
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err = phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl);
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return err;
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}
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/**
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* genphy_restart_aneg - Enable and Restart Autonegotiation
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* @phydev: target phy_device struct
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*/
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int genphy_restart_aneg(struct phy_device *phydev)
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{
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int ctl;
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ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
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if (ctl < 0)
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return ctl;
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ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
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/* Don't isolate the PHY if we're negotiating */
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ctl &= ~(BMCR_ISOLATE);
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ctl = phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl);
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return ctl;
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}
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/**
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* genphy_config_aneg - restart auto-negotiation or write BMCR
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* @phydev: target phy_device struct
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*
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* Description: If auto-negotiation is enabled, we configure the
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* advertising, and then restart auto-negotiation. If it is not
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* enabled, then we write the BMCR.
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*/
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int genphy_config_aneg(struct phy_device *phydev)
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{
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int result;
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if (AUTONEG_ENABLE != phydev->autoneg)
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return genphy_setup_forced(phydev);
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result = genphy_config_advert(phydev);
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if (result < 0) /* error */
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return result;
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if (result == 0) {
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/* Advertisment hasn't changed, but maybe aneg was never on to
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* begin with? Or maybe phy was isolated? */
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int ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
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if (ctl < 0)
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return ctl;
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if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE))
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result = 1; /* do restart aneg */
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}
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/* Only restart aneg if we are advertising something different
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* than we were before. */
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if (result > 0)
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result = genphy_restart_aneg(phydev);
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return result;
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}
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/**
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* genphy_update_link - update link status in @phydev
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* @phydev: target phy_device struct
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*
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* Description: Update the value in phydev->link to reflect the
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* current link value. In order to do this, we need to read
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* the status register twice, keeping the second value.
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*/
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int genphy_update_link(struct phy_device *phydev)
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{
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unsigned int mii_reg;
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/*
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* Wait if the link is up, and autonegotiation is in progress
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* (ie - we're capable and it's not done)
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*/
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mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
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/*
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* If we already saw the link up, and it hasn't gone down, then
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* we don't need to wait for autoneg again
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*/
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if (phydev->link && mii_reg & BMSR_LSTATUS)
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return 0;
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if ((phydev->autoneg == AUTONEG_ENABLE) &&
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!(mii_reg & BMSR_ANEGCOMPLETE)) {
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int i = 0;
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printf("%s Waiting for PHY auto negotiation to complete",
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phydev->dev->name);
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while (!(mii_reg & BMSR_ANEGCOMPLETE)) {
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/*
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* Timeout reached ?
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*/
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if (i > PHY_ANEG_TIMEOUT) {
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printf(" TIMEOUT !\n");
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phydev->link = 0;
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return -ETIMEDOUT;
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}
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if (ctrlc()) {
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puts("user interrupt!\n");
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phydev->link = 0;
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return -EINTR;
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}
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if ((i++ % 500) == 0)
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printf(".");
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udelay(1000); /* 1 ms */
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mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
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}
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printf(" done\n");
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phydev->link = 1;
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} else {
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/* Read the link a second time to clear the latched state */
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mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
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if (mii_reg & BMSR_LSTATUS)
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phydev->link = 1;
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else
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phydev->link = 0;
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}
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return 0;
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}
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/*
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* Generic function which updates the speed and duplex. If
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* autonegotiation is enabled, it uses the AND of the link
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* partner's advertised capabilities and our advertised
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* capabilities. If autonegotiation is disabled, we use the
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* appropriate bits in the control register.
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*
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* Stolen from Linux's mii.c and phy_device.c
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*/
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int genphy_parse_link(struct phy_device *phydev)
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{
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int mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
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/* We're using autonegotiation */
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if (phydev->autoneg == AUTONEG_ENABLE) {
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u32 lpa = 0;
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int gblpa = 0;
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u32 estatus = 0;
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/* Check for gigabit capability */
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if (phydev->supported & (SUPPORTED_1000baseT_Full |
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SUPPORTED_1000baseT_Half)) {
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/* We want a list of states supported by
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* both PHYs in the link
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*/
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gblpa = phy_read(phydev, MDIO_DEVAD_NONE, MII_STAT1000);
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if (gblpa < 0) {
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debug("Could not read MII_STAT1000. Ignoring gigabit capability\n");
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gblpa = 0;
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}
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gblpa &= phy_read(phydev,
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MDIO_DEVAD_NONE, MII_CTRL1000) << 2;
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}
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/* Set the baseline so we only have to set them
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* if they're different
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*/
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phydev->speed = SPEED_10;
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phydev->duplex = DUPLEX_HALF;
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/* Check the gigabit fields */
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if (gblpa & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD)) {
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phydev->speed = SPEED_1000;
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if (gblpa & PHY_1000BTSR_1000FD)
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phydev->duplex = DUPLEX_FULL;
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/* We're done! */
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return 0;
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}
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lpa = phy_read(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE);
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lpa &= phy_read(phydev, MDIO_DEVAD_NONE, MII_LPA);
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if (lpa & (LPA_100FULL | LPA_100HALF)) {
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phydev->speed = SPEED_100;
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if (lpa & LPA_100FULL)
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phydev->duplex = DUPLEX_FULL;
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} else if (lpa & LPA_10FULL)
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phydev->duplex = DUPLEX_FULL;
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/*
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* Extended status may indicate that the PHY supports
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* 1000BASE-T/X even though the 1000BASE-T registers
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* are missing. In this case we can't tell whether the
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* peer also supports it, so we only check extended
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* status if the 1000BASE-T registers are actually
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* missing.
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*/
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if ((mii_reg & BMSR_ESTATEN) && !(mii_reg & BMSR_ERCAP))
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estatus = phy_read(phydev, MDIO_DEVAD_NONE,
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MII_ESTATUS);
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if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_XHALF |
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ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) {
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phydev->speed = SPEED_1000;
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if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_TFULL))
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phydev->duplex = DUPLEX_FULL;
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}
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} else {
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u32 bmcr = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
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phydev->speed = SPEED_10;
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phydev->duplex = DUPLEX_HALF;
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if (bmcr & BMCR_FULLDPLX)
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phydev->duplex = DUPLEX_FULL;
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if (bmcr & BMCR_SPEED1000)
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phydev->speed = SPEED_1000;
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else if (bmcr & BMCR_SPEED100)
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phydev->speed = SPEED_100;
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}
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return 0;
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}
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int genphy_config(struct phy_device *phydev)
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{
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int val;
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u32 features;
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features = (SUPPORTED_TP | SUPPORTED_MII
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| SUPPORTED_AUI | SUPPORTED_FIBRE |
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SUPPORTED_BNC);
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/* Do we support autonegotiation? */
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val = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
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if (val < 0)
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return val;
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if (val & BMSR_ANEGCAPABLE)
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features |= SUPPORTED_Autoneg;
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if (val & BMSR_100FULL)
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features |= SUPPORTED_100baseT_Full;
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if (val & BMSR_100HALF)
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features |= SUPPORTED_100baseT_Half;
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if (val & BMSR_10FULL)
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features |= SUPPORTED_10baseT_Full;
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if (val & BMSR_10HALF)
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features |= SUPPORTED_10baseT_Half;
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if (val & BMSR_ESTATEN) {
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val = phy_read(phydev, MDIO_DEVAD_NONE, MII_ESTATUS);
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if (val < 0)
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return val;
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if (val & ESTATUS_1000_TFULL)
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features |= SUPPORTED_1000baseT_Full;
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if (val & ESTATUS_1000_THALF)
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features |= SUPPORTED_1000baseT_Half;
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if (val & ESTATUS_1000_XFULL)
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features |= SUPPORTED_1000baseX_Full;
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if (val & ESTATUS_1000_XHALF)
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features |= SUPPORTED_1000baseX_Half;
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}
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phydev->supported &= features;
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phydev->advertising &= features;
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genphy_config_aneg(phydev);
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return 0;
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}
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int genphy_startup(struct phy_device *phydev)
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{
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int ret;
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ret = genphy_update_link(phydev);
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if (ret)
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return ret;
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return genphy_parse_link(phydev);
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}
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int genphy_shutdown(struct phy_device *phydev)
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{
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return 0;
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}
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static struct phy_driver genphy_driver = {
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.uid = 0xffffffff,
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.mask = 0xffffffff,
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.name = "Generic PHY",
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.features = PHY_GBIT_FEATURES | SUPPORTED_MII |
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SUPPORTED_AUI | SUPPORTED_FIBRE |
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SUPPORTED_BNC,
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.config = genphy_config,
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.startup = genphy_startup,
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.shutdown = genphy_shutdown,
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};
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static LIST_HEAD(phy_drivers);
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int phy_init(void)
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{
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#ifdef CONFIG_B53_SWITCH
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phy_b53_init();
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#endif
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#ifdef CONFIG_MV88E61XX_SWITCH
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phy_mv88e61xx_init();
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#endif
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#ifdef CONFIG_PHY_AQUANTIA
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phy_aquantia_init();
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#endif
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#ifdef CONFIG_PHY_ATHEROS
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phy_atheros_init();
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#endif
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#ifdef CONFIG_PHY_BROADCOM
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phy_broadcom_init();
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#endif
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#ifdef CONFIG_PHY_CORTINA
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phy_cortina_init();
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#endif
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#ifdef CONFIG_PHY_DAVICOM
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phy_davicom_init();
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#endif
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#ifdef CONFIG_PHY_ET1011C
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phy_et1011c_init();
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#endif
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#ifdef CONFIG_PHY_LXT
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phy_lxt_init();
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#endif
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#ifdef CONFIG_PHY_MARVELL
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phy_marvell_init();
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#endif
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#ifdef CONFIG_PHY_MICREL_KSZ8XXX
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phy_micrel_ksz8xxx_init();
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#endif
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#ifdef CONFIG_PHY_MICREL_KSZ90X1
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phy_micrel_ksz90x1_init();
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#endif
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#ifdef CONFIG_PHY_MESON_GXL
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phy_meson_gxl_init();
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#endif
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#ifdef CONFIG_PHY_NATSEMI
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phy_natsemi_init();
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#endif
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#ifdef CONFIG_PHY_REALTEK
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phy_realtek_init();
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#endif
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#ifdef CONFIG_PHY_SMSC
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phy_smsc_init();
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#endif
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#ifdef CONFIG_PHY_TERANETICS
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phy_teranetics_init();
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#endif
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#ifdef CONFIG_PHY_TI
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phy_ti_init();
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#endif
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#ifdef CONFIG_PHY_VITESSE
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phy_vitesse_init();
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#endif
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#ifdef CONFIG_PHY_XILINX
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|
phy_xilinx_init();
|
|
#endif
|
|
#ifdef CONFIG_PHY_MSCC
|
|
phy_mscc_init();
|
|
#endif
|
|
#ifdef CONFIG_PHY_FIXED
|
|
phy_fixed_init();
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
int phy_register(struct phy_driver *drv)
|
|
{
|
|
INIT_LIST_HEAD(&drv->list);
|
|
list_add_tail(&drv->list, &phy_drivers);
|
|
|
|
#ifdef CONFIG_NEEDS_MANUAL_RELOC
|
|
if (drv->probe)
|
|
drv->probe += gd->reloc_off;
|
|
if (drv->config)
|
|
drv->config += gd->reloc_off;
|
|
if (drv->startup)
|
|
drv->startup += gd->reloc_off;
|
|
if (drv->shutdown)
|
|
drv->shutdown += gd->reloc_off;
|
|
if (drv->readext)
|
|
drv->readext += gd->reloc_off;
|
|
if (drv->writeext)
|
|
drv->writeext += gd->reloc_off;
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
int phy_set_supported(struct phy_device *phydev, u32 max_speed)
|
|
{
|
|
/* The default values for phydev->supported are provided by the PHY
|
|
* driver "features" member, we want to reset to sane defaults first
|
|
* before supporting higher speeds.
|
|
*/
|
|
phydev->supported &= PHY_DEFAULT_FEATURES;
|
|
|
|
switch (max_speed) {
|
|
default:
|
|
return -ENOTSUPP;
|
|
case SPEED_1000:
|
|
phydev->supported |= PHY_1000BT_FEATURES;
|
|
/* fall through */
|
|
case SPEED_100:
|
|
phydev->supported |= PHY_100BT_FEATURES;
|
|
/* fall through */
|
|
case SPEED_10:
|
|
phydev->supported |= PHY_10BT_FEATURES;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int phy_probe(struct phy_device *phydev)
|
|
{
|
|
int err = 0;
|
|
|
|
phydev->advertising = phydev->supported = phydev->drv->features;
|
|
phydev->mmds = phydev->drv->mmds;
|
|
|
|
if (phydev->drv->probe)
|
|
err = phydev->drv->probe(phydev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static struct phy_driver *generic_for_interface(phy_interface_t interface)
|
|
{
|
|
#ifdef CONFIG_PHYLIB_10G
|
|
if (is_10g_interface(interface))
|
|
return &gen10g_driver;
|
|
#endif
|
|
|
|
return &genphy_driver;
|
|
}
|
|
|
|
static struct phy_driver *get_phy_driver(struct phy_device *phydev,
|
|
phy_interface_t interface)
|
|
{
|
|
struct list_head *entry;
|
|
int phy_id = phydev->phy_id;
|
|
struct phy_driver *drv = NULL;
|
|
|
|
list_for_each(entry, &phy_drivers) {
|
|
drv = list_entry(entry, struct phy_driver, list);
|
|
if ((drv->uid & drv->mask) == (phy_id & drv->mask))
|
|
return drv;
|
|
}
|
|
|
|
/* If we made it here, there's no driver for this PHY */
|
|
return generic_for_interface(interface);
|
|
}
|
|
|
|
static struct phy_device *phy_device_create(struct mii_dev *bus, int addr,
|
|
u32 phy_id,
|
|
phy_interface_t interface)
|
|
{
|
|
struct phy_device *dev;
|
|
|
|
/* We allocate the device, and initialize the
|
|
* default values */
|
|
dev = malloc(sizeof(*dev));
|
|
if (!dev) {
|
|
printf("Failed to allocate PHY device for %s:%d\n",
|
|
bus->name, addr);
|
|
return NULL;
|
|
}
|
|
|
|
memset(dev, 0, sizeof(*dev));
|
|
|
|
dev->duplex = -1;
|
|
dev->link = 0;
|
|
dev->interface = interface;
|
|
|
|
dev->autoneg = AUTONEG_ENABLE;
|
|
|
|
dev->addr = addr;
|
|
dev->phy_id = phy_id;
|
|
dev->bus = bus;
|
|
|
|
dev->drv = get_phy_driver(dev, interface);
|
|
|
|
phy_probe(dev);
|
|
|
|
bus->phymap[addr] = dev;
|
|
|
|
return dev;
|
|
}
|
|
|
|
/**
|
|
* get_phy_id - reads the specified addr for its ID.
|
|
* @bus: the target MII bus
|
|
* @addr: PHY address on the MII bus
|
|
* @phy_id: where to store the ID retrieved.
|
|
*
|
|
* Description: Reads the ID registers of the PHY at @addr on the
|
|
* @bus, stores it in @phy_id and returns zero on success.
|
|
*/
|
|
int __weak get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id)
|
|
{
|
|
int phy_reg;
|
|
|
|
/* Grab the bits from PHYIR1, and put them
|
|
* in the upper half */
|
|
phy_reg = bus->read(bus, addr, devad, MII_PHYSID1);
|
|
|
|
if (phy_reg < 0)
|
|
return -EIO;
|
|
|
|
*phy_id = (phy_reg & 0xffff) << 16;
|
|
|
|
/* Grab the bits from PHYIR2, and put them in the lower half */
|
|
phy_reg = bus->read(bus, addr, devad, MII_PHYSID2);
|
|
|
|
if (phy_reg < 0)
|
|
return -EIO;
|
|
|
|
*phy_id |= (phy_reg & 0xffff);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct phy_device *create_phy_by_mask(struct mii_dev *bus,
|
|
unsigned phy_mask, int devad, phy_interface_t interface)
|
|
{
|
|
u32 phy_id = 0xffffffff;
|
|
while (phy_mask) {
|
|
int addr = ffs(phy_mask) - 1;
|
|
int r = get_phy_id(bus, addr, devad, &phy_id);
|
|
/* If the PHY ID is mostly f's, we didn't find anything */
|
|
if (r == 0 && (phy_id & 0x1fffffff) != 0x1fffffff)
|
|
return phy_device_create(bus, addr, phy_id, interface);
|
|
phy_mask &= ~(1 << addr);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static struct phy_device *search_for_existing_phy(struct mii_dev *bus,
|
|
unsigned phy_mask, phy_interface_t interface)
|
|
{
|
|
/* If we have one, return the existing device, with new interface */
|
|
while (phy_mask) {
|
|
int addr = ffs(phy_mask) - 1;
|
|
if (bus->phymap[addr]) {
|
|
bus->phymap[addr]->interface = interface;
|
|
return bus->phymap[addr];
|
|
}
|
|
phy_mask &= ~(1 << addr);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static struct phy_device *get_phy_device_by_mask(struct mii_dev *bus,
|
|
unsigned phy_mask, phy_interface_t interface)
|
|
{
|
|
int i;
|
|
struct phy_device *phydev;
|
|
|
|
phydev = search_for_existing_phy(bus, phy_mask, interface);
|
|
if (phydev)
|
|
return phydev;
|
|
/* Try Standard (ie Clause 22) access */
|
|
/* Otherwise we have to try Clause 45 */
|
|
for (i = 0; i < 5; i++) {
|
|
phydev = create_phy_by_mask(bus, phy_mask,
|
|
i ? i : MDIO_DEVAD_NONE, interface);
|
|
if (IS_ERR(phydev))
|
|
return NULL;
|
|
if (phydev)
|
|
return phydev;
|
|
}
|
|
|
|
debug("\n%s PHY: ", bus->name);
|
|
while (phy_mask) {
|
|
int addr = ffs(phy_mask) - 1;
|
|
debug("%d ", addr);
|
|
phy_mask &= ~(1 << addr);
|
|
}
|
|
debug("not found\n");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* get_phy_device - reads the specified PHY device and returns its @phy_device struct
|
|
* @bus: the target MII bus
|
|
* @addr: PHY address on the MII bus
|
|
*
|
|
* Description: Reads the ID registers of the PHY at @addr on the
|
|
* @bus, then allocates and returns the phy_device to represent it.
|
|
*/
|
|
static struct phy_device *get_phy_device(struct mii_dev *bus, int addr,
|
|
phy_interface_t interface)
|
|
{
|
|
return get_phy_device_by_mask(bus, 1 << addr, interface);
|
|
}
|
|
|
|
int phy_reset(struct phy_device *phydev)
|
|
{
|
|
int reg;
|
|
int timeout = 500;
|
|
int devad = MDIO_DEVAD_NONE;
|
|
|
|
if (phydev->flags & PHY_FLAG_BROKEN_RESET)
|
|
return 0;
|
|
|
|
#ifdef CONFIG_PHYLIB_10G
|
|
/* If it's 10G, we need to issue reset through one of the MMDs */
|
|
if (is_10g_interface(phydev->interface)) {
|
|
if (!phydev->mmds)
|
|
gen10g_discover_mmds(phydev);
|
|
|
|
devad = ffs(phydev->mmds) - 1;
|
|
}
|
|
#endif
|
|
|
|
if (phy_write(phydev, devad, MII_BMCR, BMCR_RESET) < 0) {
|
|
debug("PHY reset failed\n");
|
|
return -1;
|
|
}
|
|
|
|
#ifdef CONFIG_PHY_RESET_DELAY
|
|
udelay(CONFIG_PHY_RESET_DELAY); /* Intel LXT971A needs this */
|
|
#endif
|
|
/*
|
|
* Poll the control register for the reset bit to go to 0 (it is
|
|
* auto-clearing). This should happen within 0.5 seconds per the
|
|
* IEEE spec.
|
|
*/
|
|
reg = phy_read(phydev, devad, MII_BMCR);
|
|
while ((reg & BMCR_RESET) && timeout--) {
|
|
reg = phy_read(phydev, devad, MII_BMCR);
|
|
|
|
if (reg < 0) {
|
|
debug("PHY status read failed\n");
|
|
return -1;
|
|
}
|
|
udelay(1000);
|
|
}
|
|
|
|
if (reg & BMCR_RESET) {
|
|
puts("PHY reset timed out\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int miiphy_reset(const char *devname, unsigned char addr)
|
|
{
|
|
struct mii_dev *bus = miiphy_get_dev_by_name(devname);
|
|
struct phy_device *phydev;
|
|
|
|
/*
|
|
* miiphy_reset was only used on standard PHYs, so we'll fake it here.
|
|
* If later code tries to connect with the right interface, this will
|
|
* be corrected by get_phy_device in phy_connect()
|
|
*/
|
|
phydev = get_phy_device(bus, addr, PHY_INTERFACE_MODE_MII);
|
|
|
|
return phy_reset(phydev);
|
|
}
|
|
|
|
struct phy_device *phy_find_by_mask(struct mii_dev *bus, unsigned phy_mask,
|
|
phy_interface_t interface)
|
|
{
|
|
/* Reset the bus */
|
|
if (bus->reset) {
|
|
bus->reset(bus);
|
|
|
|
/* Wait 15ms to make sure the PHY has come out of hard reset */
|
|
udelay(15000);
|
|
}
|
|
|
|
return get_phy_device_by_mask(bus, phy_mask, interface);
|
|
}
|
|
|
|
#ifdef CONFIG_DM_ETH
|
|
void phy_connect_dev(struct phy_device *phydev, struct udevice *dev)
|
|
#else
|
|
void phy_connect_dev(struct phy_device *phydev, struct eth_device *dev)
|
|
#endif
|
|
{
|
|
/* Soft Reset the PHY */
|
|
phy_reset(phydev);
|
|
if (phydev->dev && phydev->dev != dev) {
|
|
printf("%s:%d is connected to %s. Reconnecting to %s\n",
|
|
phydev->bus->name, phydev->addr,
|
|
phydev->dev->name, dev->name);
|
|
}
|
|
phydev->dev = dev;
|
|
debug("%s connected to %s\n", dev->name, phydev->drv->name);
|
|
}
|
|
|
|
#ifdef CONFIG_DM_ETH
|
|
struct phy_device *phy_connect(struct mii_dev *bus, int addr,
|
|
struct udevice *dev, phy_interface_t interface)
|
|
#else
|
|
struct phy_device *phy_connect(struct mii_dev *bus, int addr,
|
|
struct eth_device *dev, phy_interface_t interface)
|
|
#endif
|
|
{
|
|
struct phy_device *phydev = NULL;
|
|
#ifdef CONFIG_PHY_FIXED
|
|
int sn;
|
|
const char *name;
|
|
sn = fdt_first_subnode(gd->fdt_blob, dev_of_offset(dev));
|
|
while (sn > 0) {
|
|
name = fdt_get_name(gd->fdt_blob, sn, NULL);
|
|
if (name != NULL && strcmp(name, "fixed-link") == 0) {
|
|
phydev = phy_device_create(bus,
|
|
sn, PHY_FIXED_ID, interface);
|
|
break;
|
|
}
|
|
sn = fdt_next_subnode(gd->fdt_blob, sn);
|
|
}
|
|
#endif
|
|
if (phydev == NULL)
|
|
phydev = phy_find_by_mask(bus, 1 << addr, interface);
|
|
|
|
if (phydev)
|
|
phy_connect_dev(phydev, dev);
|
|
else
|
|
printf("Could not get PHY for %s: addr %d\n", bus->name, addr);
|
|
return phydev;
|
|
}
|
|
|
|
/*
|
|
* Start the PHY. Returns 0 on success, or a negative error code.
|
|
*/
|
|
int phy_startup(struct phy_device *phydev)
|
|
{
|
|
if (phydev->drv->startup)
|
|
return phydev->drv->startup(phydev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
__weak int board_phy_config(struct phy_device *phydev)
|
|
{
|
|
if (phydev->drv->config)
|
|
return phydev->drv->config(phydev);
|
|
return 0;
|
|
}
|
|
|
|
int phy_config(struct phy_device *phydev)
|
|
{
|
|
/* Invoke an optional board-specific helper */
|
|
return board_phy_config(phydev);
|
|
}
|
|
|
|
int phy_shutdown(struct phy_device *phydev)
|
|
{
|
|
if (phydev->drv->shutdown)
|
|
phydev->drv->shutdown(phydev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int phy_get_interface_by_name(const char *str)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < PHY_INTERFACE_MODE_COUNT; i++) {
|
|
if (!strcmp(str, phy_interface_strings[i]))
|
|
return i;
|
|
}
|
|
|
|
return -1;
|
|
}
|