--- /dev/null
+/*
+ * (C) Copyright 2015
+ * Elecsys Corporation <www.elecsyscorp.com>
+ * Kevin Smith <kevin.smith@elecsyscorp.com>
+ *
+ * Original driver:
+ * (C) Copyright 2009
+ * Marvell Semiconductor <www.marvell.com>
+ * Prafulla Wadaskar <prafulla@marvell.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/*
+ * PHY driver for mv88e61xx ethernet switches.
+ *
+ * This driver configures the mv88e61xx for basic use as a PHY. The switch
+ * supports a VLAN configuration that determines how traffic will be routed
+ * between the ports. This driver uses a simple configuration that routes
+ * traffic from each PHY port only to the CPU port, and from the CPU port to
+ * any PHY port.
+ *
+ * The configuration determines which PHY ports to activate using the
+ * CONFIG_MV88E61XX_PHY_PORTS bitmask. Setting bit 0 will activate port 0, bit
+ * 1 activates port 1, etc. Do not set the bit for the port the CPU is
+ * connected to unless it is connected over a PHY interface (not MII).
+ *
+ * This driver was written for and tested on the mv88e6176 with an SGMII
+ * connection. Other configurations should be supported, but some additions or
+ * changes may be required.
+ */
+
+#include <common.h>
+
+#include <bitfield.h>
+#include <errno.h>
+#include <malloc.h>
+#include <miiphy.h>
+#include <netdev.h>
+
+#define PHY_AUTONEGOTIATE_TIMEOUT 5000
+
+#define PORT_COUNT 7
+#define PORT_MASK ((1 << PORT_COUNT) - 1)
+
+/* Device addresses */
+#define DEVADDR_PHY(p) (p)
+#define DEVADDR_PORT(p) (0x10 + (p))
+#define DEVADDR_SERDES 0x0F
+#define DEVADDR_GLOBAL_1 0x1B
+#define DEVADDR_GLOBAL_2 0x1C
+
+/* SMI indirection registers for multichip addressing mode */
+#define SMI_CMD_REG 0x00
+#define SMI_DATA_REG 0x01
+
+/* Global registers */
+#define GLOBAL1_STATUS 0x00
+#define GLOBAL1_CTRL 0x04
+#define GLOBAL1_MON_CTRL 0x1A
+
+/* Global 2 registers */
+#define GLOBAL2_REG_PHY_CMD 0x18
+#define GLOBAL2_REG_PHY_DATA 0x19
+
+/* Port registers */
+#define PORT_REG_STATUS 0x00
+#define PORT_REG_PHYS_CTRL 0x01
+#define PORT_REG_SWITCH_ID 0x03
+#define PORT_REG_CTRL 0x04
+#define PORT_REG_VLAN_MAP 0x06
+#define PORT_REG_VLAN_ID 0x07
+
+/* Phy registers */
+#define PHY_REG_CTRL1 0x10
+#define PHY_REG_STATUS1 0x11
+#define PHY_REG_PAGE 0x16
+
+/* Serdes registers */
+#define SERDES_REG_CTRL_1 0x10
+
+/* Phy page numbers */
+#define PHY_PAGE_COPPER 0
+#define PHY_PAGE_SERDES 1
+
+/* Register fields */
+#define GLOBAL1_CTRL_SWRESET BIT(15)
+
+#define GLOBAL1_MON_CTRL_CPUDEST_SHIFT 4
+#define GLOBAL1_MON_CTRL_CPUDEST_WIDTH 4
+
+#define PORT_REG_STATUS_LINK BIT(11)
+#define PORT_REG_STATUS_DUPLEX BIT(10)
+
+#define PORT_REG_STATUS_SPEED_SHIFT 8
+#define PORT_REG_STATUS_SPEED_WIDTH 2
+#define PORT_REG_STATUS_SPEED_10 0
+#define PORT_REG_STATUS_SPEED_100 1
+#define PORT_REG_STATUS_SPEED_1000 2
+
+#define PORT_REG_STATUS_CMODE_MASK 0xF
+#define PORT_REG_STATUS_CMODE_100BASE_X 0x8
+#define PORT_REG_STATUS_CMODE_1000BASE_X 0x9
+#define PORT_REG_STATUS_CMODE_SGMII 0xa
+
+#define PORT_REG_PHYS_CTRL_LINK_VALUE BIT(5)
+#define PORT_REG_PHYS_CTRL_LINK_FORCE BIT(4)
+
+#define PORT_REG_CTRL_PSTATE_SHIFT 0
+#define PORT_REG_CTRL_PSTATE_WIDTH 2
+
+#define PORT_REG_VLAN_ID_DEF_VID_SHIFT 0
+#define PORT_REG_VLAN_ID_DEF_VID_WIDTH 12
+
+#define PORT_REG_VLAN_MAP_TABLE_SHIFT 0
+#define PORT_REG_VLAN_MAP_TABLE_WIDTH 11
+
+#define SERDES_REG_CTRL_1_FORCE_LINK BIT(10)
+
+#define PHY_REG_CTRL1_ENERGY_DET_SHIFT 8
+#define PHY_REG_CTRL1_ENERGY_DET_WIDTH 2
+
+/* Field values */
+#define PORT_REG_CTRL_PSTATE_DISABLED 0
+#define PORT_REG_CTRL_PSTATE_FORWARD 3
+
+#define PHY_REG_CTRL1_ENERGY_DET_OFF 0
+#define PHY_REG_CTRL1_ENERGY_DET_SENSE_ONLY 2
+#define PHY_REG_CTRL1_ENERGY_DET_SENSE_XMIT 3
+
+/* PHY Status Register */
+#define PHY_REG_STATUS1_SPEED 0xc000
+#define PHY_REG_STATUS1_GBIT 0x8000
+#define PHY_REG_STATUS1_100 0x4000
+#define PHY_REG_STATUS1_DUPLEX 0x2000
+#define PHY_REG_STATUS1_SPDDONE 0x0800
+#define PHY_REG_STATUS1_LINK 0x0400
+#define PHY_REG_STATUS1_ENERGY 0x0010
+
+/*
+ * Macros for building commands for indirect addressing modes. These are valid
+ * for both the indirect multichip addressing mode and the PHY indirection
+ * required for the writes to any PHY register.
+ */
+#define SMI_BUSY BIT(15)
+#define SMI_CMD_CLAUSE_22 BIT(12)
+#define SMI_CMD_CLAUSE_22_OP_READ (2 << 10)
+#define SMI_CMD_CLAUSE_22_OP_WRITE (1 << 10)
+
+#define SMI_CMD_READ (SMI_BUSY | SMI_CMD_CLAUSE_22 | \
+ SMI_CMD_CLAUSE_22_OP_READ)
+#define SMI_CMD_WRITE (SMI_BUSY | SMI_CMD_CLAUSE_22 | \
+ SMI_CMD_CLAUSE_22_OP_WRITE)
+
+#define SMI_CMD_ADDR_SHIFT 5
+#define SMI_CMD_ADDR_WIDTH 5
+#define SMI_CMD_REG_SHIFT 0
+#define SMI_CMD_REG_WIDTH 5
+
+/* Check for required macros */
+#ifndef CONFIG_MV88E61XX_PHY_PORTS
+#error Define CONFIG_MV88E61XX_PHY_PORTS to indicate which physical ports \
+ to activate
+#endif
+#ifndef CONFIG_MV88E61XX_CPU_PORT
+#error Define CONFIG_MV88E61XX_CPU_PORT to the port the CPU is attached to
+#endif
+
+/* ID register values for different switch models */
+#define PORT_SWITCH_ID_6172 0x1720
+#define PORT_SWITCH_ID_6176 0x1760
+#define PORT_SWITCH_ID_6240 0x2400
+#define PORT_SWITCH_ID_6352 0x3520
+
+struct mv88e61xx_phy_priv {
+ struct mii_dev *mdio_bus;
+ int smi_addr;
+ int id;
+};
+
+static inline int smi_cmd(int cmd, int addr, int reg)
+{
+ cmd = bitfield_replace(cmd, SMI_CMD_ADDR_SHIFT, SMI_CMD_ADDR_WIDTH,
+ addr);
+ cmd = bitfield_replace(cmd, SMI_CMD_REG_SHIFT, SMI_CMD_REG_WIDTH, reg);
+ return cmd;
+}
+
+static inline int smi_cmd_read(int addr, int reg)
+{
+ return smi_cmd(SMI_CMD_READ, addr, reg);
+}
+
+static inline int smi_cmd_write(int addr, int reg)
+{
+ return smi_cmd(SMI_CMD_WRITE, addr, reg);
+}
+
+__weak int mv88e61xx_hw_reset(struct phy_device *phydev)
+{
+ return 0;
+}
+
+/* Wait for the current SMI indirect command to complete */
+static int mv88e61xx_smi_wait(struct mii_dev *bus, int smi_addr)
+{
+ int val;
+ u32 timeout = 100;
+
+ do {
+ val = bus->read(bus, smi_addr, MDIO_DEVAD_NONE, SMI_CMD_REG);
+ if (val >= 0 && (val & SMI_BUSY) == 0)
+ return 0;
+
+ mdelay(1);
+ } while (--timeout);
+
+ puts("SMI busy timeout\n");
+ return -ETIMEDOUT;
+}
+
+/*
+ * The mv88e61xx has three types of addresses: the smi bus address, the device
+ * address, and the register address. The smi bus address distinguishes it on
+ * the smi bus from other PHYs or switches. The device address determines
+ * which on-chip register set you are reading/writing (the various PHYs, their
+ * associated ports, or global configuration registers). The register address
+ * is the offset of the register you are reading/writing.
+ *
+ * When the mv88e61xx is hardware configured to have address zero, it behaves in
+ * single-chip addressing mode, where it responds to all SMI addresses, using
+ * the smi address as its device address. This obviously only works when this
+ * is the only chip on the SMI bus. This allows the driver to access device
+ * registers without using indirection. When the chip is configured to a
+ * non-zero address, it only responds to that SMI address and requires indirect
+ * writes to access the different device addresses.
+ */
+static int mv88e61xx_reg_read(struct phy_device *phydev, int dev, int reg)
+{
+ struct mv88e61xx_phy_priv *priv = phydev->priv;
+ struct mii_dev *mdio_bus = priv->mdio_bus;
+ int smi_addr = priv->smi_addr;
+ int res;
+
+ /* In single-chip mode, the device can be addressed directly */
+ if (smi_addr == 0)
+ return mdio_bus->read(mdio_bus, dev, MDIO_DEVAD_NONE, reg);
+
+ /* Wait for the bus to become free */
+ res = mv88e61xx_smi_wait(mdio_bus, smi_addr);
+ if (res < 0)
+ return res;
+
+ /* Issue the read command */
+ res = mdio_bus->write(mdio_bus, smi_addr, MDIO_DEVAD_NONE, SMI_CMD_REG,
+ smi_cmd_read(dev, reg));
+ if (res < 0)
+ return res;
+
+ /* Wait for the read command to complete */
+ res = mv88e61xx_smi_wait(mdio_bus, smi_addr);
+ if (res < 0)
+ return res;
+
+ /* Read the data */
+ res = mdio_bus->read(mdio_bus, smi_addr, MDIO_DEVAD_NONE, SMI_DATA_REG);
+ if (res < 0)
+ return res;
+
+ return bitfield_extract(res, 0, 16);
+}
+
+/* See the comment above mv88e61xx_reg_read */
+static int mv88e61xx_reg_write(struct phy_device *phydev, int dev, int reg,
+ u16 val)
+{
+ struct mv88e61xx_phy_priv *priv = phydev->priv;
+ struct mii_dev *mdio_bus = priv->mdio_bus;
+ int smi_addr = priv->smi_addr;
+ int res;
+
+ /* In single-chip mode, the device can be addressed directly */
+ if (smi_addr == 0) {
+ return mdio_bus->write(mdio_bus, dev, MDIO_DEVAD_NONE, reg,
+ val);
+ }
+
+ /* Wait for the bus to become free */
+ res = mv88e61xx_smi_wait(mdio_bus, smi_addr);
+ if (res < 0)
+ return res;
+
+ /* Set the data to write */
+ res = mdio_bus->write(mdio_bus, smi_addr, MDIO_DEVAD_NONE,
+ SMI_DATA_REG, val);
+ if (res < 0)
+ return res;
+
+ /* Issue the write command */
+ res = mdio_bus->write(mdio_bus, smi_addr, MDIO_DEVAD_NONE, SMI_CMD_REG,
+ smi_cmd_write(dev, reg));
+ if (res < 0)
+ return res;
+
+ /* Wait for the write command to complete */
+ res = mv88e61xx_smi_wait(mdio_bus, smi_addr);
+ if (res < 0)
+ return res;
+
+ return 0;
+}
+
+static int mv88e61xx_phy_wait(struct phy_device *phydev)
+{
+ int val;
+ u32 timeout = 100;
+
+ do {
+ val = mv88e61xx_reg_read(phydev, DEVADDR_GLOBAL_2,
+ GLOBAL2_REG_PHY_CMD);
+ if (val >= 0 && (val & SMI_BUSY) == 0)
+ return 0;
+
+ mdelay(1);
+ } while (--timeout);
+
+ return -ETIMEDOUT;
+}
+
+static int mv88e61xx_phy_read_indirect(struct mii_dev *smi_wrapper, int dev,
+ int devad, int reg)
+{
+ struct phy_device *phydev;
+ int res;
+
+ phydev = (struct phy_device *)smi_wrapper->priv;
+
+ /* Issue command to read */
+ res = mv88e61xx_reg_write(phydev, DEVADDR_GLOBAL_2,
+ GLOBAL2_REG_PHY_CMD,
+ smi_cmd_read(dev, reg));
+
+ /* Wait for data to be read */
+ res = mv88e61xx_phy_wait(phydev);
+ if (res < 0)
+ return res;
+
+ /* Read retrieved data */
+ return mv88e61xx_reg_read(phydev, DEVADDR_GLOBAL_2,
+ GLOBAL2_REG_PHY_DATA);
+}
+
+static int mv88e61xx_phy_write_indirect(struct mii_dev *smi_wrapper, int dev,
+ int devad, int reg, u16 data)
+{
+ struct phy_device *phydev;
+ int res;
+
+ phydev = (struct phy_device *)smi_wrapper->priv;
+
+ /* Set the data to write */
+ res = mv88e61xx_reg_write(phydev, DEVADDR_GLOBAL_2,
+ GLOBAL2_REG_PHY_DATA, data);
+ if (res < 0)
+ return res;
+ /* Issue the write command */
+ res = mv88e61xx_reg_write(phydev, DEVADDR_GLOBAL_2,
+ GLOBAL2_REG_PHY_CMD,
+ smi_cmd_write(dev, reg));
+ if (res < 0)
+ return res;
+
+ /* Wait for command to complete */
+ return mv88e61xx_phy_wait(phydev);
+}
+
+/* Wrapper function to make calls to phy_read_indirect simpler */
+static int mv88e61xx_phy_read(struct phy_device *phydev, int phy, int reg)
+{
+ return mv88e61xx_phy_read_indirect(phydev->bus, DEVADDR_PHY(phy),
+ MDIO_DEVAD_NONE, reg);
+}
+
+/* Wrapper function to make calls to phy_read_indirect simpler */
+static int mv88e61xx_phy_write(struct phy_device *phydev, int phy,
+ int reg, u16 val)
+{
+ return mv88e61xx_phy_write_indirect(phydev->bus, DEVADDR_PHY(phy),
+ MDIO_DEVAD_NONE, reg, val);
+}
+
+static int mv88e61xx_port_read(struct phy_device *phydev, u8 port, u8 reg)
+{
+ return mv88e61xx_reg_read(phydev, DEVADDR_PORT(port), reg);
+}
+
+static int mv88e61xx_port_write(struct phy_device *phydev, u8 port, u8 reg,
+ u16 val)
+{
+ return mv88e61xx_reg_write(phydev, DEVADDR_PORT(port), reg, val);
+}
+
+static int mv88e61xx_set_page(struct phy_device *phydev, u8 phy, u8 page)
+{
+ return mv88e61xx_phy_write(phydev, phy, PHY_REG_PAGE, page);
+}
+
+static int mv88e61xx_get_switch_id(struct phy_device *phydev)
+{
+ int res;
+
+ res = mv88e61xx_port_read(phydev, 0, PORT_REG_SWITCH_ID);
+ if (res < 0)
+ return res;
+ return res & 0xfff0;
+}
+
+static bool mv88e61xx_6352_family(struct phy_device *phydev)
+{
+ struct mv88e61xx_phy_priv *priv = phydev->priv;
+
+ switch (priv->id) {
+ case PORT_SWITCH_ID_6172:
+ case PORT_SWITCH_ID_6176:
+ case PORT_SWITCH_ID_6240:
+ case PORT_SWITCH_ID_6352:
+ return true;
+ }
+ return false;
+}
+
+static int mv88e61xx_get_cmode(struct phy_device *phydev, u8 port)
+{
+ int res;
+
+ res = mv88e61xx_port_read(phydev, port, PORT_REG_STATUS);
+ if (res < 0)
+ return res;
+ return res & PORT_REG_STATUS_CMODE_MASK;
+}
+
+static int mv88e61xx_parse_status(struct phy_device *phydev)
+{
+ unsigned int speed;
+ unsigned int mii_reg;
+
+ mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, PHY_REG_STATUS1);
+
+ if ((mii_reg & PHY_REG_STATUS1_LINK) &&
+ !(mii_reg & PHY_REG_STATUS1_SPDDONE)) {
+ int i = 0;
+
+ puts("Waiting for PHY realtime link");
+ while (!(mii_reg & PHY_REG_STATUS1_SPDDONE)) {
+ /* Timeout reached ? */
+ if (i > PHY_AUTONEGOTIATE_TIMEOUT) {
+ puts(" TIMEOUT !\n");
+ phydev->link = 0;
+ break;
+ }
+
+ if ((i++ % 1000) == 0)
+ putc('.');
+ udelay(1000);
+ mii_reg = phy_read(phydev, MDIO_DEVAD_NONE,
+ PHY_REG_STATUS1);
+ }
+ puts(" done\n");
+ udelay(500000); /* another 500 ms (results in faster booting) */
+ } else {
+ if (mii_reg & PHY_REG_STATUS1_LINK)
+ phydev->link = 1;
+ else
+ phydev->link = 0;
+ }
+
+ if (mii_reg & PHY_REG_STATUS1_DUPLEX)
+ phydev->duplex = DUPLEX_FULL;
+ else
+ phydev->duplex = DUPLEX_HALF;
+
+ speed = mii_reg & PHY_REG_STATUS1_SPEED;
+
+ switch (speed) {
+ case PHY_REG_STATUS1_GBIT:
+ phydev->speed = SPEED_1000;
+ break;
+ case PHY_REG_STATUS1_100:
+ phydev->speed = SPEED_100;
+ break;
+ default:
+ phydev->speed = SPEED_10;
+ break;
+ }
+
+ return 0;
+}
+
+static int mv88e61xx_switch_reset(struct phy_device *phydev)
+{
+ int time;
+ int val;
+ u8 port;
+
+ /* Disable all ports */
+ for (port = 0; port < PORT_COUNT; port++) {
+ val = mv88e61xx_port_read(phydev, port, PORT_REG_CTRL);
+ if (val < 0)
+ return val;
+ val = bitfield_replace(val, PORT_REG_CTRL_PSTATE_SHIFT,
+ PORT_REG_CTRL_PSTATE_WIDTH,
+ PORT_REG_CTRL_PSTATE_DISABLED);
+ val = mv88e61xx_port_write(phydev, port, PORT_REG_CTRL, val);
+ if (val < 0)
+ return val;
+ }
+
+ /* Wait 2 ms for queues to drain */
+ udelay(2000);
+
+ /* Reset switch */
+ val = mv88e61xx_reg_read(phydev, DEVADDR_GLOBAL_1, GLOBAL1_CTRL);
+ if (val < 0)
+ return val;
+ val |= GLOBAL1_CTRL_SWRESET;
+ val = mv88e61xx_reg_write(phydev, DEVADDR_GLOBAL_1,
+ GLOBAL1_CTRL, val);
+ if (val < 0)
+ return val;
+
+ /* Wait up to 1 second for switch reset complete */
+ for (time = 1000; time; time--) {
+ val = mv88e61xx_reg_read(phydev, DEVADDR_GLOBAL_1,
+ GLOBAL1_CTRL);
+ if (val >= 0 && ((val & GLOBAL1_CTRL_SWRESET) == 0))
+ break;
+ udelay(1000);
+ }
+ if (!time)
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
+static int mv88e61xx_serdes_init(struct phy_device *phydev)
+{
+ int val;
+
+ val = mv88e61xx_set_page(phydev, DEVADDR_SERDES, PHY_PAGE_SERDES);
+ if (val < 0)
+ return val;
+
+ /* Power up serdes module */
+ val = mv88e61xx_phy_read(phydev, DEVADDR_SERDES, MII_BMCR);
+ if (val < 0)
+ return val;
+ val &= ~(BMCR_PDOWN);
+ val = mv88e61xx_phy_write(phydev, DEVADDR_SERDES, MII_BMCR, val);
+ if (val < 0)
+ return val;
+
+ return 0;
+}
+
+static int mv88e61xx_port_enable(struct phy_device *phydev, u8 port)
+{
+ int val;
+
+ val = mv88e61xx_port_read(phydev, port, PORT_REG_CTRL);
+ if (val < 0)
+ return val;
+ val = bitfield_replace(val, PORT_REG_CTRL_PSTATE_SHIFT,
+ PORT_REG_CTRL_PSTATE_WIDTH,
+ PORT_REG_CTRL_PSTATE_FORWARD);
+ val = mv88e61xx_port_write(phydev, port, PORT_REG_CTRL, val);
+ if (val < 0)
+ return val;
+
+ return 0;
+}
+
+static int mv88e61xx_port_set_vlan(struct phy_device *phydev, u8 port,
+ u8 mask)
+{
+ int val;
+
+ /* Set VID to port number plus one */
+ val = mv88e61xx_port_read(phydev, port, PORT_REG_VLAN_ID);
+ if (val < 0)
+ return val;
+ val = bitfield_replace(val, PORT_REG_VLAN_ID_DEF_VID_SHIFT,
+ PORT_REG_VLAN_ID_DEF_VID_WIDTH,
+ port + 1);
+ val = mv88e61xx_port_write(phydev, port, PORT_REG_VLAN_ID, val);
+ if (val < 0)
+ return val;
+
+ /* Set VID mask */
+ val = mv88e61xx_port_read(phydev, port, PORT_REG_VLAN_MAP);
+ if (val < 0)
+ return val;
+ val = bitfield_replace(val, PORT_REG_VLAN_MAP_TABLE_SHIFT,
+ PORT_REG_VLAN_MAP_TABLE_WIDTH,
+ mask);
+ val = mv88e61xx_port_write(phydev, port, PORT_REG_VLAN_MAP, val);
+ if (val < 0)
+ return val;
+
+ return 0;
+}
+
+static int mv88e61xx_read_port_config(struct phy_device *phydev, u8 port)
+{
+ int res;
+ int val;
+ bool forced = false;
+
+ val = mv88e61xx_port_read(phydev, port, PORT_REG_STATUS);
+ if (val < 0)
+ return val;
+ if (!(val & PORT_REG_STATUS_LINK)) {
+ /* Temporarily force link to read port configuration */
+ u32 timeout = 100;
+ forced = true;
+
+ val = mv88e61xx_port_read(phydev, port, PORT_REG_PHYS_CTRL);
+ if (val < 0)
+ return val;
+ val |= (PORT_REG_PHYS_CTRL_LINK_FORCE |
+ PORT_REG_PHYS_CTRL_LINK_VALUE);
+ val = mv88e61xx_port_write(phydev, port, PORT_REG_PHYS_CTRL,
+ val);
+ if (val < 0)
+ return val;
+
+ /* Wait for status register to reflect forced link */
+ do {
+ val = mv88e61xx_port_read(phydev, port,
+ PORT_REG_STATUS);
+ if (val < 0)
+ goto unforce;
+ if (val & PORT_REG_STATUS_LINK)
+ break;
+ } while (--timeout);
+
+ if (timeout == 0) {
+ res = -ETIMEDOUT;
+ goto unforce;
+ }
+ }
+
+ if (val & PORT_REG_STATUS_DUPLEX)
+ phydev->duplex = DUPLEX_FULL;
+ else
+ phydev->duplex = DUPLEX_HALF;
+
+ val = bitfield_extract(val, PORT_REG_STATUS_SPEED_SHIFT,
+ PORT_REG_STATUS_SPEED_WIDTH);
+ switch (val) {
+ case PORT_REG_STATUS_SPEED_1000:
+ phydev->speed = SPEED_1000;
+ break;
+ case PORT_REG_STATUS_SPEED_100:
+ phydev->speed = SPEED_100;
+ break;
+ default:
+ phydev->speed = SPEED_10;
+ break;
+ }
+
+ res = 0;
+
+unforce:
+ if (forced) {
+ val = mv88e61xx_port_read(phydev, port, PORT_REG_PHYS_CTRL);
+ if (val < 0)
+ return val;
+ val &= ~(PORT_REG_PHYS_CTRL_LINK_FORCE |
+ PORT_REG_PHYS_CTRL_LINK_VALUE);
+ val = mv88e61xx_port_write(phydev, port, PORT_REG_PHYS_CTRL,
+ val);
+ if (val < 0)
+ return val;
+ }
+
+ return res;
+}
+
+static int mv88e61xx_set_cpu_port(struct phy_device *phydev)
+{
+ int val;
+
+ /* Set CPUDest */
+ val = mv88e61xx_reg_read(phydev, DEVADDR_GLOBAL_1, GLOBAL1_MON_CTRL);
+ if (val < 0)
+ return val;
+ val = bitfield_replace(val, GLOBAL1_MON_CTRL_CPUDEST_SHIFT,
+ GLOBAL1_MON_CTRL_CPUDEST_WIDTH,
+ CONFIG_MV88E61XX_CPU_PORT);
+ val = mv88e61xx_reg_write(phydev, DEVADDR_GLOBAL_1,
+ GLOBAL1_MON_CTRL, val);
+ if (val < 0)
+ return val;
+
+ /* Allow CPU to route to any port */
+ val = PORT_MASK & ~(1 << CONFIG_MV88E61XX_CPU_PORT);
+ val = mv88e61xx_port_set_vlan(phydev, CONFIG_MV88E61XX_CPU_PORT, val);
+ if (val < 0)
+ return val;
+
+ /* Enable CPU port */
+ val = mv88e61xx_port_enable(phydev, CONFIG_MV88E61XX_CPU_PORT);
+ if (val < 0)
+ return val;
+
+ val = mv88e61xx_read_port_config(phydev, CONFIG_MV88E61XX_CPU_PORT);
+ if (val < 0)
+ return val;
+
+ /* If CPU is connected to serdes, initialize serdes */
+ if (mv88e61xx_6352_family(phydev)) {
+ val = mv88e61xx_get_cmode(phydev, CONFIG_MV88E61XX_CPU_PORT);
+ if (val < 0)
+ return val;
+ if (val == PORT_REG_STATUS_CMODE_100BASE_X ||
+ val == PORT_REG_STATUS_CMODE_1000BASE_X ||
+ val == PORT_REG_STATUS_CMODE_SGMII) {
+ val = mv88e61xx_serdes_init(phydev);
+ if (val < 0)
+ return val;
+ }
+ }
+
+ return 0;
+}
+
+static int mv88e61xx_switch_init(struct phy_device *phydev)
+{
+ static int init;
+ int res;
+
+ if (init)
+ return 0;
+
+ res = mv88e61xx_switch_reset(phydev);
+ if (res < 0)
+ return res;
+
+ res = mv88e61xx_set_cpu_port(phydev);
+ if (res < 0)
+ return res;
+
+ init = 1;
+
+ return 0;
+}
+
+static int mv88e61xx_phy_enable(struct phy_device *phydev, u8 phy)
+{
+ int val;
+
+ val = mv88e61xx_phy_read(phydev, phy, MII_BMCR);
+ if (val < 0)
+ return val;
+ val &= ~(BMCR_PDOWN);
+ val = mv88e61xx_phy_write(phydev, phy, MII_BMCR, val);
+ if (val < 0)
+ return val;
+
+ return 0;
+}
+
+static int mv88e61xx_phy_setup(struct phy_device *phydev, u8 phy)
+{
+ int val;
+
+ /*
+ * Enable energy-detect sensing on PHY, used to determine when a PHY
+ * port is physically connected
+ */
+ val = mv88e61xx_phy_read(phydev, phy, PHY_REG_CTRL1);
+ if (val < 0)
+ return val;
+ val = bitfield_replace(val, PHY_REG_CTRL1_ENERGY_DET_SHIFT,
+ PHY_REG_CTRL1_ENERGY_DET_WIDTH,
+ PHY_REG_CTRL1_ENERGY_DET_SENSE_XMIT);
+ val = mv88e61xx_phy_write(phydev, phy, PHY_REG_CTRL1, val);
+ if (val < 0)
+ return val;
+
+ return 0;
+}
+
+static int mv88e61xx_phy_config_port(struct phy_device *phydev, u8 phy)
+{
+ int val;
+
+ val = mv88e61xx_port_enable(phydev, phy);
+ if (val < 0)
+ return val;
+
+ val = mv88e61xx_port_set_vlan(phydev, phy,
+ 1 << CONFIG_MV88E61XX_CPU_PORT);
+ if (val < 0)
+ return val;
+
+ return 0;
+}
+
+static int mv88e61xx_probe(struct phy_device *phydev)
+{
+ struct mii_dev *smi_wrapper;
+ struct mv88e61xx_phy_priv *priv;
+ int res;
+
+ res = mv88e61xx_hw_reset(phydev);
+ if (res < 0)
+ return res;
+
+ priv = malloc(sizeof(*priv));
+ if (!priv)
+ return -ENOMEM;
+
+ memset(priv, 0, sizeof(*priv));
+
+ /*
+ * This device requires indirect reads/writes to the PHY registers
+ * which the generic PHY code can't handle. Make a wrapper MII device
+ * to handle reads/writes
+ */
+ smi_wrapper = mdio_alloc();
+ if (!smi_wrapper) {
+ free(priv);
+ return -ENOMEM;
+ }
+
+ /*
+ * Store the mdio bus in the private data, as we are going to replace
+ * the bus with the wrapper bus
+ */
+ priv->mdio_bus = phydev->bus;
+
+ /*
+ * Store the smi bus address in private data. This lets us use the
+ * phydev addr field for device address instead, as the genphy code
+ * expects.
+ */
+ priv->smi_addr = phydev->addr;
+
+ /*
+ * Store the phy_device in the wrapper mii device. This lets us get it
+ * back when genphy functions call phy_read/phy_write.
+ */
+ smi_wrapper->priv = phydev;
+ strncpy(smi_wrapper->name, "indirect mii", sizeof(smi_wrapper->name));
+ smi_wrapper->read = mv88e61xx_phy_read_indirect;
+ smi_wrapper->write = mv88e61xx_phy_write_indirect;
+
+ /* Replace the bus with the wrapper device */
+ phydev->bus = smi_wrapper;
+
+ phydev->priv = priv;
+
+ priv->id = mv88e61xx_get_switch_id(phydev);
+
+ return 0;
+}
+
+static int mv88e61xx_phy_config(struct phy_device *phydev)
+{
+ int res;
+ int i;
+ int ret = -1;
+
+ res = mv88e61xx_switch_init(phydev);
+ if (res < 0)
+ return res;
+
+ for (i = 0; i < PORT_COUNT; i++) {
+ if ((1 << i) & CONFIG_MV88E61XX_PHY_PORTS) {
+ phydev->addr = i;
+
+ res = mv88e61xx_phy_enable(phydev, i);
+ if (res < 0) {
+ printf("Error enabling PHY %i\n", i);
+ continue;
+ }
+ res = mv88e61xx_phy_setup(phydev, i);
+ if (res < 0) {
+ printf("Error setting up PHY %i\n", i);
+ continue;
+ }
+ res = mv88e61xx_phy_config_port(phydev, i);
+ if (res < 0) {
+ printf("Error configuring PHY %i\n", i);
+ continue;
+ }
+
+ res = genphy_config_aneg(phydev);
+ if (res < 0) {
+ printf("Error setting PHY %i autoneg\n", i);
+ continue;
+ }
+ res = phy_reset(phydev);
+ if (res < 0) {
+ printf("Error resetting PHY %i\n", i);
+ continue;
+ }
+
+ /* Return success if any PHY succeeds */
+ ret = 0;
+ }
+ }
+
+ return ret;
+}
+
+static int mv88e61xx_phy_is_connected(struct phy_device *phydev)
+{
+ int val;
+
+ val = mv88e61xx_phy_read(phydev, phydev->addr, PHY_REG_STATUS1);
+ if (val < 0)
+ return 0;
+
+ /*
+ * After reset, the energy detect signal remains high for a few seconds
+ * regardless of whether a cable is connected. This function will
+ * return false positives during this time.
+ */
+ return (val & PHY_REG_STATUS1_ENERGY) == 0;
+}
+
+static int mv88e61xx_phy_startup(struct phy_device *phydev)
+{
+ int i;
+ int link = 0;
+ int res;
+ int speed = phydev->speed;
+ int duplex = phydev->duplex;
+
+ for (i = 0; i < PORT_COUNT; i++) {
+ if ((1 << i) & CONFIG_MV88E61XX_PHY_PORTS) {
+ phydev->addr = i;
+ if (!mv88e61xx_phy_is_connected(phydev))
+ continue;
+ res = genphy_update_link(phydev);
+ if (res < 0)
+ continue;
+ res = mv88e61xx_parse_status(phydev);
+ if (res < 0)
+ continue;
+ link = (link || phydev->link);
+ }
+ }
+ phydev->link = link;
+
+ /* Restore CPU interface speed and duplex after it was changed for
+ * other ports */
+ phydev->speed = speed;
+ phydev->duplex = duplex;
+
+ return 0;
+}
+
+static struct phy_driver mv88e61xx_driver = {
+ .name = "Marvell MV88E61xx",
+ .uid = 0x01410eb1,
+ .mask = 0xfffffff0,
+ .features = PHY_GBIT_FEATURES,
+ .probe = mv88e61xx_probe,
+ .config = mv88e61xx_phy_config,
+ .startup = mv88e61xx_phy_startup,
+ .shutdown = &genphy_shutdown,
+};
+
+int phy_mv88e61xx_init(void)
+{
+ phy_register(&mv88e61xx_driver);
+
+ return 0;
+}
+
+/*
+ * Overload weak get_phy_id definition since we need non-standard functions
+ * to read PHY registers
+ */
+int get_phy_id(struct mii_dev *bus, int smi_addr, int devad, u32 *phy_id)
+{
+ struct phy_device temp_phy;
+ struct mv88e61xx_phy_priv temp_priv;
+ struct mii_dev temp_mii;
+ int val;
+
+ /*
+ * Buid temporary data structures that the chip reading code needs to
+ * read the ID
+ */
+ temp_priv.mdio_bus = bus;
+ temp_priv.smi_addr = smi_addr;
+ temp_phy.priv = &temp_priv;
+ temp_mii.priv = &temp_phy;
+
+ val = mv88e61xx_phy_read_indirect(&temp_mii, 0, devad, MII_PHYSID1);
+ if (val < 0)
+ return -EIO;
+
+ *phy_id = val << 16;
+
+ val = mv88e61xx_phy_read_indirect(&temp_mii, 0, devad, MII_PHYSID2);
+ if (val < 0)
+ return -EIO;
+
+ *phy_id |= (val & 0xffff);
+
+ return 0;
+}
projects / oweals / u-boot.git / commitdiff