mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-22 09:58:52 +09:00
500 lines
12 KiB
C
500 lines
12 KiB
C
![]() |
/*
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* Copyright (c) 2017 Microchip Technology Inc. All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <dm.h>
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#include <malloc.h>
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#include <miiphy.h>
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#include <memalign.h>
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#include <usb.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include "usb_ether.h"
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#include "lan7x.h"
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/*
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* Lan7x infrastructure commands
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*/
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int lan7x_write_reg(struct usb_device *udev, u32 index, u32 data)
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{
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int len;
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ALLOC_CACHE_ALIGN_BUFFER(u32, tmpbuf, 1);
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cpu_to_le32s(&data);
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tmpbuf[0] = data;
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len = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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USB_VENDOR_REQUEST_WRITE_REGISTER,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, index, tmpbuf, sizeof(data),
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USB_CTRL_SET_TIMEOUT_MS);
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if (len != sizeof(data)) {
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debug("%s failed: index=%d, data=%d, len=%d",
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__func__, index, data, len);
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return -EIO;
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}
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return 0;
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}
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int lan7x_read_reg(struct usb_device *udev, u32 index, u32 *data)
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{
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int len;
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ALLOC_CACHE_ALIGN_BUFFER(u32, tmpbuf, 1);
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len = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
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USB_VENDOR_REQUEST_READ_REGISTER,
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, index, tmpbuf, sizeof(*data),
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USB_CTRL_GET_TIMEOUT_MS);
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*data = tmpbuf[0];
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if (len != sizeof(*data)) {
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debug("%s failed: index=%d, len=%d", __func__, index, len);
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return -EIO;
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}
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le32_to_cpus(data);
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return 0;
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}
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static int lan7x_phy_wait_not_busy(struct usb_device *udev)
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{
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return lan7x_wait_for_bit(udev, __func__,
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MII_ACC, MII_ACC_MII_BUSY,
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false, 100, 0);
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}
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int lan7x_mdio_read(struct usb_device *udev, int phy_id, int idx)
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{
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u32 val, addr;
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/* confirm MII not busy */
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if (lan7x_phy_wait_not_busy(udev)) {
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debug("MII is busy in %s\n", __func__);
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return -ETIMEDOUT;
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}
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/* set the address, index & direction (read from PHY) */
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addr = (phy_id << 11) | (idx << 6) |
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MII_ACC_MII_READ | MII_ACC_MII_BUSY;
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lan7x_write_reg(udev, MII_ACC, addr);
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if (lan7x_phy_wait_not_busy(udev)) {
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debug("Timed out reading MII reg %02X\n", idx);
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return -ETIMEDOUT;
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}
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lan7x_read_reg(udev, MII_DATA, &val);
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return val & 0xFFFF;
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}
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void lan7x_mdio_write(struct usb_device *udev, int phy_id, int idx, int regval)
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{
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u32 addr;
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/* confirm MII not busy */
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if (lan7x_phy_wait_not_busy(udev)) {
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debug("MII is busy in %s\n", __func__);
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return;
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}
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lan7x_write_reg(udev, MII_DATA, regval);
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/* set the address, index & direction (write to PHY) */
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addr = (phy_id << 11) | (idx << 6) |
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MII_ACC_MII_WRITE | MII_ACC_MII_BUSY;
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lan7x_write_reg(udev, MII_ACC, addr);
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if (lan7x_phy_wait_not_busy(udev))
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debug("Timed out writing MII reg %02X\n", idx);
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}
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/*
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* Lan7x phylib wrappers
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*/
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static int lan7x_phylib_mdio_read(struct mii_dev *bus,
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int addr, int devad, int reg)
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{
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struct usb_device *udev = dev_get_parent_priv(bus->priv);
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return lan7x_mdio_read(udev, addr, reg);
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}
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static int lan7x_phylib_mdio_write(struct mii_dev *bus,
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int addr, int devad, int reg, u16 val)
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{
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struct usb_device *udev = dev_get_parent_priv(bus->priv);
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lan7x_mdio_write(udev, addr, reg, (int)val);
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return 0;
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}
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/*
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* Lan7x eeprom functions
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*/
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static int lan7x_eeprom_confirm_not_busy(struct usb_device *udev)
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{
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return lan7x_wait_for_bit(udev, __func__,
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E2P_CMD, E2P_CMD_EPC_BUSY,
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false, 100, 0);
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}
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static int lan7x_wait_eeprom(struct usb_device *udev)
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{
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return lan7x_wait_for_bit(udev, __func__,
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E2P_CMD,
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(E2P_CMD_EPC_BUSY | E2P_CMD_EPC_TIMEOUT),
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false, 100, 0);
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}
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static int lan7x_read_eeprom(struct usb_device *udev,
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u32 offset, u32 length, u8 *data)
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{
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u32 val;
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int i, ret;
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ret = lan7x_eeprom_confirm_not_busy(udev);
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if (ret)
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return ret;
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for (i = 0; i < length; i++) {
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val = E2P_CMD_EPC_BUSY | E2P_CMD_EPC_CMD_READ |
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(offset & E2P_CMD_EPC_ADDR_MASK);
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lan7x_write_reg(udev, E2P_CMD, val);
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ret = lan7x_wait_eeprom(udev);
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if (ret)
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return ret;
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lan7x_read_reg(udev, E2P_DATA, &val);
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data[i] = val & 0xFF;
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offset++;
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}
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return ret;
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}
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/*
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* Lan7x phylib functions
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*/
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int lan7x_phylib_register(struct udevice *udev)
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{
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struct usb_device *usbdev = dev_get_parent_priv(udev);
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struct lan7x_private *priv = dev_get_priv(udev);
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int ret;
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priv->mdiobus = mdio_alloc();
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if (!priv->mdiobus) {
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printf("mdio_alloc failed\n");
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return -ENOMEM;
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}
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priv->mdiobus->read = lan7x_phylib_mdio_read;
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priv->mdiobus->write = lan7x_phylib_mdio_write;
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sprintf(priv->mdiobus->name,
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"lan7x_mdiobus-d%hu-p%hu", usbdev->devnum, usbdev->portnr);
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priv->mdiobus->priv = (void *)udev;
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ret = mdio_register(priv->mdiobus);
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if (ret) {
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printf("mdio_register failed\n");
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free(priv->mdiobus);
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return -ENOMEM;
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}
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return 0;
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}
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int lan7x_eth_phylib_connect(struct udevice *udev, struct ueth_data *dev)
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{
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struct lan7x_private *priv = dev_get_priv(udev);
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priv->phydev = phy_connect(priv->mdiobus, dev->phy_id,
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udev, PHY_INTERFACE_MODE_MII);
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if (!priv->phydev) {
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printf("phy_connect failed\n");
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return -ENODEV;
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}
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return 0;
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}
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int lan7x_eth_phylib_config_start(struct udevice *udev)
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{
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struct lan7x_private *priv = dev_get_priv(udev);
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int ret;
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/* configure supported modes */
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priv->phydev->supported = PHY_BASIC_FEATURES |
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SUPPORTED_1000baseT_Full |
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SUPPORTED_Pause |
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SUPPORTED_Asym_Pause;
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priv->phydev->advertising = ADVERTISED_10baseT_Half |
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ADVERTISED_10baseT_Full |
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ADVERTISED_100baseT_Half |
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ADVERTISED_100baseT_Full |
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ADVERTISED_1000baseT_Full |
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ADVERTISED_Pause |
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ADVERTISED_Asym_Pause |
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ADVERTISED_Autoneg;
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priv->phydev->autoneg = AUTONEG_ENABLE;
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ret = genphy_config_aneg(priv->phydev);
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if (ret) {
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printf("genphy_config_aneg failed\n");
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return ret;
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}
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ret = phy_startup(priv->phydev);
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if (ret) {
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printf("phy_startup failed\n");
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return ret;
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}
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debug("** %s() speed %i duplex %i adv %X supp %X\n", __func__,
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priv->phydev->speed, priv->phydev->duplex,
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priv->phydev->advertising, priv->phydev->supported);
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return 0;
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}
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int lan7x_update_flowcontrol(struct usb_device *udev,
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struct ueth_data *dev,
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uint32_t *flow, uint32_t *fct_flow)
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{
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uint32_t lcladv, rmtadv;
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u8 cap = 0;
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struct lan7x_private *priv = dev_get_priv(udev->dev);
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debug("** %s()\n", __func__);
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debug("** %s() priv->phydev->speed %i duplex %i\n", __func__,
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priv->phydev->speed, priv->phydev->duplex);
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if (priv->phydev->duplex == DUPLEX_FULL) {
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lcladv = lan7x_mdio_read(udev, dev->phy_id, MII_ADVERTISE);
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rmtadv = lan7x_mdio_read(udev, dev->phy_id, MII_LPA);
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cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
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debug("TX Flow ");
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if (cap & FLOW_CTRL_TX) {
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*flow = (FLOW_CR_TX_FCEN | 0xFFFF);
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/* set fct_flow thresholds to 20% and 80% */
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*fct_flow = ((MAX_RX_FIFO_SIZE * 2) / (10 * 512))
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& 0x7FUL;
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*fct_flow <<= 8UL;
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*fct_flow |= ((MAX_RX_FIFO_SIZE * 8) / (10 * 512))
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& 0x7FUL;
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debug("EN ");
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} else {
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debug("DIS ");
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}
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debug("RX Flow ");
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if (cap & FLOW_CTRL_RX) {
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*flow |= FLOW_CR_RX_FCEN;
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debug("EN");
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} else {
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debug("DIS");
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}
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}
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debug("\n");
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return 0;
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}
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int lan7x_read_eeprom_mac(unsigned char *enetaddr, struct usb_device *udev)
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{
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int ret;
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memset(enetaddr, 0, 6);
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ret = lan7x_read_eeprom(udev, 0, 1, enetaddr);
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if ((ret == 0) && (enetaddr[0] == EEPROM_INDICATOR)) {
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ret = lan7x_read_eeprom(udev,
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EEPROM_MAC_OFFSET, ETH_ALEN,
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enetaddr);
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if ((ret == 0) && is_valid_ethaddr(enetaddr)) {
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/* eeprom values are valid so use them */
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debug("MAC address read from EEPROM %pM\n",
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enetaddr);
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return 0;
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}
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}
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debug("MAC address read from EEPROM invalid %pM\n", enetaddr);
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memset(enetaddr, 0, 6);
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return -EINVAL;
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}
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int lan7x_pmt_phy_reset(struct usb_device *udev,
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struct ueth_data *dev)
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{
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int ret;
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u32 data;
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ret = lan7x_read_reg(udev, PMT_CTL, &data);
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if (ret)
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return ret;
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ret = lan7x_write_reg(udev, PMT_CTL, data | PMT_CTL_PHY_RST);
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if (ret)
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return ret;
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/* for LAN7x, we need to check PMT_CTL_READY asserted */
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ret = lan7x_wait_for_bit(udev, "PMT_CTL_PHY_RST",
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PMT_CTL, PMT_CTL_PHY_RST,
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false, 1000, 0); /* could take over 125mS */
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if (ret)
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return ret;
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return lan7x_wait_for_bit(udev, "PMT_CTL_READY",
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PMT_CTL, PMT_CTL_READY,
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true, 1000, 0);
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}
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int lan7x_basic_reset(struct usb_device *udev,
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struct ueth_data *dev)
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{
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int ret;
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dev->phy_id = LAN7X_INTERNAL_PHY_ID; /* fixed phy id */
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ret = lan7x_write_reg(udev, HW_CFG, HW_CFG_LRST);
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if (ret)
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return ret;
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ret = lan7x_wait_for_bit(udev, "HW_CFG_LRST",
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HW_CFG, HW_CFG_LRST,
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false, 1000, 0);
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if (ret)
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return ret;
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debug("USB devnum %d portnr %d\n", udev->devnum, udev->portnr);
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return lan7x_pmt_phy_reset(udev, dev);
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}
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void lan7x_eth_stop(struct udevice *dev)
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{
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debug("** %s()\n", __func__);
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}
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int lan7x_eth_send(struct udevice *dev, void *packet, int length)
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{
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struct lan7x_private *priv = dev_get_priv(dev);
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struct ueth_data *ueth = &priv->ueth;
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int err;
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int actual_len;
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u32 tx_cmd_a;
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u32 tx_cmd_b;
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, msg,
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PKTSIZE + sizeof(tx_cmd_a) + sizeof(tx_cmd_b));
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debug("** %s(), len %d, buf %#x\n", __func__, length,
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(unsigned int)(ulong) msg);
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if (length > PKTSIZE)
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return -ENOSPC;
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/* LAN7x disable all TX offload features for u-boot */
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tx_cmd_a = (u32) (length & TX_CMD_A_LEN_MASK) | TX_CMD_A_FCS;
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tx_cmd_b = 0;
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cpu_to_le32s(&tx_cmd_a);
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cpu_to_le32s(&tx_cmd_b);
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/* prepend cmd_a and cmd_b */
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memcpy(msg, &tx_cmd_a, sizeof(tx_cmd_a));
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memcpy(msg + sizeof(tx_cmd_a), &tx_cmd_b, sizeof(tx_cmd_b));
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memcpy(msg + sizeof(tx_cmd_a) + sizeof(tx_cmd_b), (void *)packet,
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length);
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err = usb_bulk_msg(ueth->pusb_dev,
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usb_sndbulkpipe(ueth->pusb_dev, ueth->ep_out),
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(void *)msg,
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length + sizeof(tx_cmd_a) +
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sizeof(tx_cmd_b),
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&actual_len, USB_BULK_SEND_TIMEOUT_MS);
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debug("Tx: len = %u, actual = %u, err = %d\n",
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(unsigned int)(length + sizeof(tx_cmd_a) + sizeof(tx_cmd_b)),
|
||
|
(unsigned int)actual_len, err);
|
||
|
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
int lan7x_eth_recv(struct udevice *dev, int flags, uchar **packetp)
|
||
|
{
|
||
|
struct lan7x_private *priv = dev_get_priv(dev);
|
||
|
struct ueth_data *ueth = &priv->ueth;
|
||
|
uint8_t *ptr;
|
||
|
int ret, len;
|
||
|
u32 packet_len = 0;
|
||
|
u32 rx_cmd_a = 0;
|
||
|
|
||
|
len = usb_ether_get_rx_bytes(ueth, &ptr);
|
||
|
debug("%s: first try, len=%d\n", __func__, len);
|
||
|
if (!len) {
|
||
|
if (!(flags & ETH_RECV_CHECK_DEVICE))
|
||
|
return -EAGAIN;
|
||
|
ret = usb_ether_receive(ueth, RX_URB_SIZE);
|
||
|
if (ret == -EAGAIN)
|
||
|
return ret;
|
||
|
|
||
|
len = usb_ether_get_rx_bytes(ueth, &ptr);
|
||
|
debug("%s: second try, len=%d\n", __func__, len);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* 1st 4 bytes contain the length of the actual data plus error info.
|
||
|
* Extract data length.
|
||
|
*/
|
||
|
if (len < sizeof(packet_len)) {
|
||
|
debug("Rx: incomplete packet length\n");
|
||
|
goto err;
|
||
|
}
|
||
|
memcpy(&rx_cmd_a, ptr, sizeof(rx_cmd_a));
|
||
|
le32_to_cpus(&rx_cmd_a);
|
||
|
if (rx_cmd_a & RX_CMD_A_RXE) {
|
||
|
debug("Rx: Error header=%#x", rx_cmd_a);
|
||
|
goto err;
|
||
|
}
|
||
|
packet_len = (u16) (rx_cmd_a & RX_CMD_A_LEN_MASK);
|
||
|
|
||
|
if (packet_len > len - sizeof(packet_len)) {
|
||
|
debug("Rx: too large packet: %d\n", packet_len);
|
||
|
goto err;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* For LAN7x, the length in command A does not
|
||
|
* include command A, B, and C length.
|
||
|
* So use it as is.
|
||
|
*/
|
||
|
|
||
|
*packetp = ptr + 10;
|
||
|
return packet_len;
|
||
|
|
||
|
err:
|
||
|
usb_ether_advance_rxbuf(ueth, -1);
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
int lan7x_free_pkt(struct udevice *dev, uchar *packet, int packet_len)
|
||
|
{
|
||
|
struct lan7x_private *priv = dev_get_priv(dev);
|
||
|
|
||
|
packet_len = ALIGN(packet_len, 4);
|
||
|
usb_ether_advance_rxbuf(&priv->ueth, sizeof(u32) + packet_len);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int lan7x_eth_remove(struct udevice *dev)
|
||
|
{
|
||
|
struct lan7x_private *priv = dev_get_priv(dev);
|
||
|
|
||
|
debug("** %s()\n", __func__);
|
||
|
free(priv->phydev);
|
||
|
mdio_unregister(priv->mdiobus);
|
||
|
mdio_free(priv->mdiobus);
|
||
|
|
||
|
return 0;
|
||
|
}
|