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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Generic PHY Management code
- *
- * Copyright 2011 Freescale Semiconductor, Inc.
- * author Andy Fleming
- *
- * Based loosely off of Linux's PHY Lib
- */
- #include <common.h>
- #include <console.h>
- #include <dm.h>
- #include <log.h>
- #include <malloc.h>
- #include <net.h>
- #include <command.h>
- #include <miiphy.h>
- #include <phy.h>
- #include <errno.h>
- #include <linux/bitops.h>
- #include <linux/delay.h>
- #include <linux/err.h>
- #include <linux/compiler.h>
- DECLARE_GLOBAL_DATA_PTR;
- /* Generic PHY support and helper functions */
- /**
- * genphy_config_advert - sanitize and advertise auto-negotiation parameters
- * @phydev: target phy_device struct
- *
- * Description: Writes MII_ADVERTISE with the appropriate values,
- * after sanitizing the values to make sure we only advertise
- * what is supported. Returns < 0 on error, 0 if the PHY's advertisement
- * hasn't changed, and > 0 if it has changed.
- */
- static int genphy_config_advert(struct phy_device *phydev)
- {
- u32 advertise;
- int oldadv, adv, bmsr;
- int err, changed = 0;
- /* Only allow advertising what this PHY supports */
- phydev->advertising &= phydev->supported;
- advertise = phydev->advertising;
- /* Setup standard advertisement */
- adv = phy_read(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE);
- oldadv = adv;
- if (adv < 0)
- return adv;
- adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP |
- ADVERTISE_PAUSE_ASYM);
- if (advertise & ADVERTISED_10baseT_Half)
- adv |= ADVERTISE_10HALF;
- if (advertise & ADVERTISED_10baseT_Full)
- adv |= ADVERTISE_10FULL;
- if (advertise & ADVERTISED_100baseT_Half)
- adv |= ADVERTISE_100HALF;
- if (advertise & ADVERTISED_100baseT_Full)
- adv |= ADVERTISE_100FULL;
- if (advertise & ADVERTISED_Pause)
- adv |= ADVERTISE_PAUSE_CAP;
- if (advertise & ADVERTISED_Asym_Pause)
- adv |= ADVERTISE_PAUSE_ASYM;
- if (advertise & ADVERTISED_1000baseX_Half)
- adv |= ADVERTISE_1000XHALF;
- if (advertise & ADVERTISED_1000baseX_Full)
- adv |= ADVERTISE_1000XFULL;
- if (adv != oldadv) {
- err = phy_write(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE, adv);
- if (err < 0)
- return err;
- changed = 1;
- }
- bmsr = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
- if (bmsr < 0)
- return bmsr;
- /* Per 802.3-2008, Section 22.2.4.2.16 Extended status all
- * 1000Mbits/sec capable PHYs shall have the BMSR_ESTATEN bit set to a
- * logical 1.
- */
- if (!(bmsr & BMSR_ESTATEN))
- return changed;
- /* Configure gigabit if it's supported */
- adv = phy_read(phydev, MDIO_DEVAD_NONE, MII_CTRL1000);
- oldadv = adv;
- if (adv < 0)
- return adv;
- adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
- if (phydev->supported & (SUPPORTED_1000baseT_Half |
- SUPPORTED_1000baseT_Full)) {
- if (advertise & SUPPORTED_1000baseT_Half)
- adv |= ADVERTISE_1000HALF;
- if (advertise & SUPPORTED_1000baseT_Full)
- adv |= ADVERTISE_1000FULL;
- }
- if (adv != oldadv)
- changed = 1;
- err = phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, adv);
- if (err < 0)
- return err;
- return changed;
- }
- /**
- * genphy_setup_forced - configures/forces speed/duplex from @phydev
- * @phydev: target phy_device struct
- *
- * Description: Configures MII_BMCR to force speed/duplex
- * to the values in phydev. Assumes that the values are valid.
- */
- static int genphy_setup_forced(struct phy_device *phydev)
- {
- int err;
- int ctl = BMCR_ANRESTART;
- phydev->pause = 0;
- phydev->asym_pause = 0;
- if (phydev->speed == SPEED_1000)
- ctl |= BMCR_SPEED1000;
- else if (phydev->speed == SPEED_100)
- ctl |= BMCR_SPEED100;
- if (phydev->duplex == DUPLEX_FULL)
- ctl |= BMCR_FULLDPLX;
- err = phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl);
- return err;
- }
- /**
- * genphy_restart_aneg - Enable and Restart Autonegotiation
- * @phydev: target phy_device struct
- */
- int genphy_restart_aneg(struct phy_device *phydev)
- {
- int ctl;
- ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
- if (ctl < 0)
- return ctl;
- ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
- /* Don't isolate the PHY if we're negotiating */
- ctl &= ~(BMCR_ISOLATE);
- ctl = phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl);
- return ctl;
- }
- /**
- * genphy_config_aneg - restart auto-negotiation or write BMCR
- * @phydev: target phy_device struct
- *
- * Description: If auto-negotiation is enabled, we configure the
- * advertising, and then restart auto-negotiation. If it is not
- * enabled, then we write the BMCR.
- */
- int genphy_config_aneg(struct phy_device *phydev)
- {
- int result;
- if (phydev->autoneg != AUTONEG_ENABLE)
- return genphy_setup_forced(phydev);
- result = genphy_config_advert(phydev);
- if (result < 0) /* error */
- return result;
- if (result == 0) {
- /*
- * Advertisment hasn't changed, but maybe aneg was never on to
- * begin with? Or maybe phy was isolated?
- */
- int ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
- if (ctl < 0)
- return ctl;
- if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE))
- result = 1; /* do restart aneg */
- }
- /*
- * Only restart aneg if we are advertising something different
- * than we were before.
- */
- if (result > 0)
- result = genphy_restart_aneg(phydev);
- return result;
- }
- /**
- * genphy_update_link - update link status in @phydev
- * @phydev: target phy_device struct
- *
- * Description: Update the value in phydev->link to reflect the
- * current link value. In order to do this, we need to read
- * the status register twice, keeping the second value.
- */
- int genphy_update_link(struct phy_device *phydev)
- {
- unsigned int mii_reg;
- /*
- * Wait if the link is up, and autonegotiation is in progress
- * (ie - we're capable and it's not done)
- */
- mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
- /*
- * If we already saw the link up, and it hasn't gone down, then
- * we don't need to wait for autoneg again
- */
- if (phydev->link && mii_reg & BMSR_LSTATUS)
- return 0;
- if ((phydev->autoneg == AUTONEG_ENABLE) &&
- !(mii_reg & BMSR_ANEGCOMPLETE)) {
- int i = 0;
- printf("%s Waiting for PHY auto negotiation to complete",
- phydev->dev->name);
- while (!(mii_reg & BMSR_ANEGCOMPLETE)) {
- /*
- * Timeout reached ?
- */
- if (i > (PHY_ANEG_TIMEOUT / 50)) {
- printf(" TIMEOUT !\n");
- phydev->link = 0;
- return -ETIMEDOUT;
- }
- if (ctrlc()) {
- puts("user interrupt!\n");
- phydev->link = 0;
- return -EINTR;
- }
- if ((i++ % 10) == 0)
- printf(".");
- mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
- mdelay(50); /* 50 ms */
- }
- printf(" done\n");
- phydev->link = 1;
- } else {
- /* Read the link a second time to clear the latched state */
- mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
- if (mii_reg & BMSR_LSTATUS)
- phydev->link = 1;
- else
- phydev->link = 0;
- }
- return 0;
- }
- /*
- * Generic function which updates the speed and duplex. If
- * autonegotiation is enabled, it uses the AND of the link
- * partner's advertised capabilities and our advertised
- * capabilities. If autonegotiation is disabled, we use the
- * appropriate bits in the control register.
- *
- * Stolen from Linux's mii.c and phy_device.c
- */
- int genphy_parse_link(struct phy_device *phydev)
- {
- int mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
- /* We're using autonegotiation */
- if (phydev->autoneg == AUTONEG_ENABLE) {
- u32 lpa = 0;
- int gblpa = 0;
- u32 estatus = 0;
- /* Check for gigabit capability */
- if (phydev->supported & (SUPPORTED_1000baseT_Full |
- SUPPORTED_1000baseT_Half)) {
- /* We want a list of states supported by
- * both PHYs in the link
- */
- gblpa = phy_read(phydev, MDIO_DEVAD_NONE, MII_STAT1000);
- if (gblpa < 0) {
- debug("Could not read MII_STAT1000. ");
- debug("Ignoring gigabit capability\n");
- gblpa = 0;
- }
- gblpa &= phy_read(phydev,
- MDIO_DEVAD_NONE, MII_CTRL1000) << 2;
- }
- /* Set the baseline so we only have to set them
- * if they're different
- */
- phydev->speed = SPEED_10;
- phydev->duplex = DUPLEX_HALF;
- /* Check the gigabit fields */
- if (gblpa & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD)) {
- phydev->speed = SPEED_1000;
- if (gblpa & PHY_1000BTSR_1000FD)
- phydev->duplex = DUPLEX_FULL;
- /* We're done! */
- return 0;
- }
- lpa = phy_read(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE);
- lpa &= phy_read(phydev, MDIO_DEVAD_NONE, MII_LPA);
- if (lpa & (LPA_100FULL | LPA_100HALF)) {
- phydev->speed = SPEED_100;
- if (lpa & LPA_100FULL)
- phydev->duplex = DUPLEX_FULL;
- } else if (lpa & LPA_10FULL) {
- phydev->duplex = DUPLEX_FULL;
- }
- /*
- * Extended status may indicate that the PHY supports
- * 1000BASE-T/X even though the 1000BASE-T registers
- * are missing. In this case we can't tell whether the
- * peer also supports it, so we only check extended
- * status if the 1000BASE-T registers are actually
- * missing.
- */
- if ((mii_reg & BMSR_ESTATEN) && !(mii_reg & BMSR_ERCAP))
- estatus = phy_read(phydev, MDIO_DEVAD_NONE,
- MII_ESTATUS);
- if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_XHALF |
- ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) {
- phydev->speed = SPEED_1000;
- if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_TFULL))
- phydev->duplex = DUPLEX_FULL;
- }
- } else {
- u32 bmcr = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
- phydev->speed = SPEED_10;
- phydev->duplex = DUPLEX_HALF;
- if (bmcr & BMCR_FULLDPLX)
- phydev->duplex = DUPLEX_FULL;
- if (bmcr & BMCR_SPEED1000)
- phydev->speed = SPEED_1000;
- else if (bmcr & BMCR_SPEED100)
- phydev->speed = SPEED_100;
- }
- return 0;
- }
- int genphy_config(struct phy_device *phydev)
- {
- int val;
- u32 features;
- features = (SUPPORTED_TP | SUPPORTED_MII
- | SUPPORTED_AUI | SUPPORTED_FIBRE |
- SUPPORTED_BNC);
- /* Do we support autonegotiation? */
- val = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
- if (val < 0)
- return val;
- if (val & BMSR_ANEGCAPABLE)
- features |= SUPPORTED_Autoneg;
- if (val & BMSR_100FULL)
- features |= SUPPORTED_100baseT_Full;
- if (val & BMSR_100HALF)
- features |= SUPPORTED_100baseT_Half;
- if (val & BMSR_10FULL)
- features |= SUPPORTED_10baseT_Full;
- if (val & BMSR_10HALF)
- features |= SUPPORTED_10baseT_Half;
- if (val & BMSR_ESTATEN) {
- val = phy_read(phydev, MDIO_DEVAD_NONE, MII_ESTATUS);
- if (val < 0)
- return val;
- if (val & ESTATUS_1000_TFULL)
- features |= SUPPORTED_1000baseT_Full;
- if (val & ESTATUS_1000_THALF)
- features |= SUPPORTED_1000baseT_Half;
- if (val & ESTATUS_1000_XFULL)
- features |= SUPPORTED_1000baseX_Full;
- if (val & ESTATUS_1000_XHALF)
- features |= SUPPORTED_1000baseX_Half;
- }
- phydev->supported &= features;
- phydev->advertising &= features;
- genphy_config_aneg(phydev);
- return 0;
- }
- int genphy_startup(struct phy_device *phydev)
- {
- int ret;
- ret = genphy_update_link(phydev);
- if (ret)
- return ret;
- return genphy_parse_link(phydev);
- }
- int genphy_shutdown(struct phy_device *phydev)
- {
- return 0;
- }
- static struct phy_driver genphy_driver = {
- .uid = 0xffffffff,
- .mask = 0xffffffff,
- .name = "Generic PHY",
- .features = PHY_GBIT_FEATURES | SUPPORTED_MII |
- SUPPORTED_AUI | SUPPORTED_FIBRE |
- SUPPORTED_BNC,
- .config = genphy_config,
- .startup = genphy_startup,
- .shutdown = genphy_shutdown,
- };
- int genphy_init(void)
- {
- return phy_register(&genphy_driver);
- }
- static LIST_HEAD(phy_drivers);
- int phy_init(void)
- {
- #ifdef CONFIG_NEEDS_MANUAL_RELOC
- /*
- * The pointers inside phy_drivers also needs to be updated incase of
- * manual reloc, without which these points to some invalid
- * pre reloc address and leads to invalid accesses, hangs.
- */
- struct list_head *head = &phy_drivers;
- head->next = (void *)head->next + gd->reloc_off;
- head->prev = (void *)head->prev + gd->reloc_off;
- #endif
- #ifdef CONFIG_B53_SWITCH
- phy_b53_init();
- #endif
- #ifdef CONFIG_MV88E61XX_SWITCH
- phy_mv88e61xx_init();
- #endif
- #ifdef CONFIG_PHY_AQUANTIA
- phy_aquantia_init();
- #endif
- #ifdef CONFIG_PHY_ATHEROS
- phy_atheros_init();
- #endif
- #ifdef CONFIG_PHY_BROADCOM
- phy_broadcom_init();
- #endif
- #ifdef CONFIG_PHY_CORTINA
- phy_cortina_init();
- #endif
- #ifdef CONFIG_PHY_DAVICOM
- phy_davicom_init();
- #endif
- #ifdef CONFIG_PHY_ET1011C
- phy_et1011c_init();
- #endif
- #ifdef CONFIG_PHY_LXT
- phy_lxt_init();
- #endif
- #ifdef CONFIG_PHY_MARVELL
- phy_marvell_init();
- #endif
- #ifdef CONFIG_PHY_MICREL_KSZ8XXX
- phy_micrel_ksz8xxx_init();
- #endif
- #ifdef CONFIG_PHY_MICREL_KSZ90X1
- phy_micrel_ksz90x1_init();
- #endif
- #ifdef CONFIG_PHY_MESON_GXL
- phy_meson_gxl_init();
- #endif
- #ifdef CONFIG_PHY_NATSEMI
- phy_natsemi_init();
- #endif
- #ifdef CONFIG_PHY_REALTEK
- phy_realtek_init();
- #endif
- #ifdef CONFIG_PHY_SMSC
- phy_smsc_init();
- #endif
- #ifdef CONFIG_PHY_TERANETICS
- phy_teranetics_init();
- #endif
- #ifdef CONFIG_PHY_TI
- phy_ti_init();
- #endif
- #ifdef CONFIG_PHY_VITESSE
- phy_vitesse_init();
- #endif
- #ifdef CONFIG_PHY_XILINX
- phy_xilinx_init();
- #endif
- #ifdef CONFIG_PHY_MSCC
- phy_mscc_init();
- #endif
- #ifdef CONFIG_PHY_FIXED
- phy_fixed_init();
- #endif
- #ifdef CONFIG_PHY_NCSI
- phy_ncsi_init();
- #endif
- #ifdef CONFIG_PHY_XILINX_GMII2RGMII
- phy_xilinx_gmii2rgmii_init();
- #endif
- genphy_init();
- 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;
- if (drv->read_mmd)
- drv->read_mmd += gd->reloc_off;
- if (drv->write_mmd)
- drv->write_mmd += 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->drv->features;
- 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, bool is_c45,
- 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 ? bus->name : "(null bus)", addr);
- return NULL;
- }
- memset(dev, 0, sizeof(*dev));
- dev->duplex = -1;
- dev->link = 0;
- dev->interface = interface;
- #ifdef CONFIG_DM_ETH
- dev->node = ofnode_null();
- #endif
- dev->autoneg = AUTONEG_ENABLE;
- dev->addr = addr;
- dev->phy_id = phy_id;
- dev->is_c45 = is_c45;
- dev->bus = bus;
- dev->drv = get_phy_driver(dev, interface);
- if (phy_probe(dev)) {
- printf("%s, PHY probe failed\n", __func__);
- return NULL;
- }
- if (addr >= 0 && addr < PHY_MAX_ADDR && phy_id != PHY_FIXED_ID)
- 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,
- uint phy_mask, int devad,
- phy_interface_t interface)
- {
- u32 phy_id = 0xffffffff;
- bool is_c45;
- while (phy_mask) {
- int addr = ffs(phy_mask) - 1;
- int r = get_phy_id(bus, addr, devad, &phy_id);
- /*
- * If the PHY ID is flat 0 we ignore it. There are C45 PHYs
- * that return all 0s for C22 reads (like Aquantia AQR112) and
- * there are C22 PHYs that return all 0s for C45 reads (like
- * Atheros AR8035).
- */
- if (r == 0 && phy_id == 0)
- goto next;
- /* If the PHY ID is mostly f's, we didn't find anything */
- if (r == 0 && (phy_id & 0x1fffffff) != 0x1fffffff) {
- is_c45 = (devad == MDIO_DEVAD_NONE) ? false : true;
- return phy_device_create(bus, addr, phy_id, is_c45,
- interface);
- }
- next:
- phy_mask &= ~(1 << addr);
- }
- return NULL;
- }
- static struct phy_device *search_for_existing_phy(struct mii_dev *bus,
- uint 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,
- uint phy_mask,
- phy_interface_t interface)
- {
- struct phy_device *phydev;
- int devad[] = {
- /* Clause-22 */
- MDIO_DEVAD_NONE,
- /* Clause-45 */
- MDIO_MMD_PMAPMD,
- MDIO_MMD_WIS,
- MDIO_MMD_PCS,
- MDIO_MMD_PHYXS,
- MDIO_MMD_VEND1,
- };
- int i, devad_cnt;
- devad_cnt = sizeof(devad)/sizeof(int);
- phydev = search_for_existing_phy(bus, phy_mask, interface);
- if (phydev)
- return phydev;
- /* try different access clauses */
- for (i = 0; i < devad_cnt; i++) {
- phydev = create_phy_by_mask(bus, phy_mask,
- devad[i], 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, uint 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 */
- mdelay(15);
- }
- 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_PHY_XILINX_GMII2RGMII
- #ifdef CONFIG_DM_ETH
- static struct phy_device *phy_connect_gmii2rgmii(struct mii_dev *bus,
- struct udevice *dev,
- phy_interface_t interface)
- #else
- static struct phy_device *phy_connect_gmii2rgmii(struct mii_dev *bus,
- struct eth_device *dev,
- phy_interface_t interface)
- #endif
- {
- struct phy_device *phydev = NULL;
- int sn = dev_of_offset(dev);
- int off;
- while (sn > 0) {
- off = fdt_node_offset_by_compatible(gd->fdt_blob, sn,
- "xlnx,gmii-to-rgmii-1.0");
- if (off > 0) {
- phydev = phy_device_create(bus, off,
- PHY_GMII2RGMII_ID, false,
- interface);
- break;
- }
- if (off == -FDT_ERR_NOTFOUND)
- sn = fdt_first_subnode(gd->fdt_blob, sn);
- else
- printf("%s: Error finding compat string:%d\n",
- __func__, off);
- }
- return phydev;
- }
- #endif
- #ifdef CONFIG_PHY_FIXED
- #ifdef CONFIG_DM_ETH
- static struct phy_device *phy_connect_fixed(struct mii_dev *bus,
- struct udevice *dev,
- phy_interface_t interface)
- #else
- static struct phy_device *phy_connect_fixed(struct mii_dev *bus,
- struct eth_device *dev,
- phy_interface_t interface)
- #endif
- {
- struct phy_device *phydev = NULL;
- 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 && strcmp(name, "fixed-link") == 0) {
- phydev = phy_device_create(bus, sn, PHY_FIXED_ID, false,
- interface);
- break;
- }
- sn = fdt_next_subnode(gd->fdt_blob, sn);
- }
- return phydev;
- }
- #endif
- #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;
- uint mask = (addr >= 0) ? (1 << addr) : 0xffffffff;
- #ifdef CONFIG_PHY_FIXED
- phydev = phy_connect_fixed(bus, dev, interface);
- #endif
- #ifdef CONFIG_PHY_NCSI
- if (!phydev)
- phydev = phy_device_create(bus, 0, PHY_NCSI_ID, false, interface);
- #endif
- #ifdef CONFIG_PHY_XILINX_GMII2RGMII
- if (!phydev)
- phydev = phy_connect_gmii2rgmii(bus, dev, interface);
- #endif
- if (!phydev)
- phydev = phy_find_by_mask(bus, mask, 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;
- }
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