--- /dev/null
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <usb.h>
+#include <linux/mii.h>
+#include "usb_ether.h"
+
+
+/* ASIX AX8817X based USB 2.0 Ethernet Devices */
+
+#define AX_CMD_SET_SW_MII 0x06
+#define AX_CMD_READ_MII_REG 0x07
+#define AX_CMD_WRITE_MII_REG 0x08
+#define AX_CMD_SET_HW_MII 0x0a
+#define AX_CMD_READ_RX_CTL 0x0f
+#define AX_CMD_WRITE_RX_CTL 0x10
+#define AX_CMD_WRITE_IPG0 0x12
+#define AX_CMD_READ_NODE_ID 0x13
+#define AX_CMD_READ_PHY_ID 0x19
+#define AX_CMD_WRITE_MEDIUM_MODE 0x1b
+#define AX_CMD_WRITE_GPIOS 0x1f
+#define AX_CMD_SW_RESET 0x20
+#define AX_CMD_SW_PHY_SELECT 0x22
+
+#define AX_SWRESET_CLEAR 0x00
+#define AX_SWRESET_PRTE 0x04
+#define AX_SWRESET_PRL 0x08
+#define AX_SWRESET_IPRL 0x20
+#define AX_SWRESET_IPPD 0x40
+
+#define AX88772_IPG0_DEFAULT 0x15
+#define AX88772_IPG1_DEFAULT 0x0c
+#define AX88772_IPG2_DEFAULT 0x12
+
+/* AX88772 & AX88178 Medium Mode Register */
+#define AX_MEDIUM_PF 0x0080
+#define AX_MEDIUM_JFE 0x0040
+#define AX_MEDIUM_TFC 0x0020
+#define AX_MEDIUM_RFC 0x0010
+#define AX_MEDIUM_ENCK 0x0008
+#define AX_MEDIUM_AC 0x0004
+#define AX_MEDIUM_FD 0x0002
+#define AX_MEDIUM_GM 0x0001
+#define AX_MEDIUM_SM 0x1000
+#define AX_MEDIUM_SBP 0x0800
+#define AX_MEDIUM_PS 0x0200
+#define AX_MEDIUM_RE 0x0100
+
+#define AX88178_MEDIUM_DEFAULT \
+ (AX_MEDIUM_PS | AX_MEDIUM_FD | AX_MEDIUM_AC | \
+ AX_MEDIUM_RFC | AX_MEDIUM_TFC | AX_MEDIUM_JFE | \
+ AX_MEDIUM_RE)
+
+#define AX88772_MEDIUM_DEFAULT \
+ (AX_MEDIUM_FD | AX_MEDIUM_RFC | \
+ AX_MEDIUM_TFC | AX_MEDIUM_PS | \
+ AX_MEDIUM_AC | AX_MEDIUM_RE)
+
+/* AX88772 & AX88178 RX_CTL values */
+#define AX_RX_CTL_SO 0x0080
+#define AX_RX_CTL_AB 0x0008
+
+#define AX_DEFAULT_RX_CTL \
+ (AX_RX_CTL_SO | AX_RX_CTL_AB)
+
+/* GPIO 2 toggles */
+#define AX_GPIO_GPO2EN 0x10 /* GPIO2 Output enable */
+#define AX_GPIO_GPO_2 0x20 /* GPIO2 Output value */
+#define AX_GPIO_RSE 0x80 /* Reload serial EEPROM */
+
+/* local defines */
+#define ASIX_BASE_NAME "asx"
+#define USB_CTRL_SET_TIMEOUT 5000
+#define USB_CTRL_GET_TIMEOUT 5000
+#define USB_BULK_SEND_TIMEOUT 5000
+#define USB_BULK_RECV_TIMEOUT 5000
+
+#define AX_RX_URB_SIZE 2048
+#define PHY_CONNECT_TIMEOUT 5000
+
+/* local vars */
+static int curr_eth_dev; /* index for name of next device detected */
+
+/*
+ * Asix infrastructure commands
+ */
+static int asix_write_cmd(struct ueth_data *dev, u8 cmd, u16 value, u16 index,
+ u16 size, void *data)
+{
+ int len;
+
+ debug("asix_write_cmd() cmd=0x%02x value=0x%04x index=0x%04x "
+ "size=%d\n", cmd, value, index, size);
+
+ len = usb_control_msg(
+ dev->pusb_dev,
+ usb_sndctrlpipe(dev->pusb_dev, 0),
+ cmd,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ value,
+ index,
+ data,
+ size,
+ USB_CTRL_SET_TIMEOUT);
+
+ return len == size ? 0 : -1;
+}
+
+static int asix_read_cmd(struct ueth_data *dev, u8 cmd, u16 value, u16 index,
+ u16 size, void *data)
+{
+ int len;
+
+ debug("asix_read_cmd() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
+ cmd, value, index, size);
+
+ len = usb_control_msg(
+ dev->pusb_dev,
+ usb_rcvctrlpipe(dev->pusb_dev, 0),
+ cmd,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ value,
+ index,
+ data,
+ size,
+ USB_CTRL_GET_TIMEOUT);
+ return len == size ? 0 : -1;
+}
+
+static inline int asix_set_sw_mii(struct ueth_data *dev)
+{
+ int ret;
+
+ ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
+ if (ret < 0)
+ debug("Failed to enable software MII access\n");
+ return ret;
+}
+
+static inline int asix_set_hw_mii(struct ueth_data *dev)
+{
+ int ret;
+
+ ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
+ if (ret < 0)
+ debug("Failed to enable hardware MII access\n");
+ return ret;
+}
+
+static int asix_mdio_read(struct ueth_data *dev, int phy_id, int loc)
+{
+ __le16 res;
+
+ asix_set_sw_mii(dev);
+ asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, &res);
+ asix_set_hw_mii(dev);
+
+ debug("asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
+ phy_id, loc, le16_to_cpu(res));
+
+ return le16_to_cpu(res);
+}
+
+static void
+asix_mdio_write(struct ueth_data *dev, int phy_id, int loc, int val)
+{
+ __le16 res = cpu_to_le16(val);
+
+ debug("asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
+ phy_id, loc, val);
+ asix_set_sw_mii(dev);
+ asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
+ asix_set_hw_mii(dev);
+}
+
+/*
+ * Asix "high level" commands
+ */
+static int asix_sw_reset(struct ueth_data *dev, u8 flags)
+{
+ int ret;
+
+ ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
+ if (ret < 0)
+ debug("Failed to send software reset: %02x\n", ret);
+ else
+ udelay(150 * 1000);
+
+ return ret;
+}
+
+static inline int asix_get_phy_addr(struct ueth_data *dev)
+{
+ u8 buf[2];
+ int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf);
+
+ debug("asix_get_phy_addr()\n");
+
+ if (ret < 0) {
+ debug("Error reading PHYID register: %02x\n", ret);
+ goto out;
+ }
+ debug("asix_get_phy_addr() returning 0x%04x\n", *((__le16 *)buf));
+ ret = buf[1];
+
+out:
+ return ret;
+}
+
+static int asix_write_medium_mode(struct ueth_data *dev, u16 mode)
+{
+ int ret;
+
+ debug("asix_write_medium_mode() - mode = 0x%04x\n", mode);
+ ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode,
+ 0, 0, NULL);
+ if (ret < 0) {
+ debug("Failed to write Medium Mode mode to 0x%04x: %02x\n",
+ mode, ret);
+ }
+ return ret;
+}
+
+static u16 asix_read_rx_ctl(struct ueth_data *dev)
+{
+ __le16 v;
+ int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v);
+
+ if (ret < 0)
+ debug("Error reading RX_CTL register: %02x\n", ret);
+ else
+ ret = le16_to_cpu(v);
+ return ret;
+}
+
+static int asix_write_rx_ctl(struct ueth_data *dev, u16 mode)
+{
+ int ret;
+
+ debug("asix_write_rx_ctl() - mode = 0x%04x\n", mode);
+ ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
+ if (ret < 0) {
+ debug("Failed to write RX_CTL mode to 0x%04x: %02x\n",
+ mode, ret);
+ }
+ return ret;
+}
+
+static int asix_write_gpio(struct ueth_data *dev, u16 value, int sleep)
+{
+ int ret;
+
+ debug("asix_write_gpio() - value = 0x%04x\n", value);
+ ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL);
+ if (ret < 0) {
+ debug("Failed to write GPIO value 0x%04x: %02x\n",
+ value, ret);
+ }
+ if (sleep)
+ udelay(sleep * 1000);
+
+ return ret;
+}
+
+/*
+ * mii commands
+ */
+
+/*
+ * mii_nway_restart - restart NWay (autonegotiation) for this interface
+ *
+ * Returns 0 on success, negative on error.
+ */
+static int mii_nway_restart(struct ueth_data *dev)
+{
+ int bmcr;
+ int r = -1;
+
+ /* if autoneg is off, it's an error */
+ bmcr = asix_mdio_read(dev, dev->phy_id, MII_BMCR);
+
+ if (bmcr & BMCR_ANENABLE) {
+ bmcr |= BMCR_ANRESTART;
+ asix_mdio_write(dev, dev->phy_id, MII_BMCR, bmcr);
+ r = 0;
+ }
+
+ return r;
+}
+
+/*
+ * Asix callbacks
+ */
+static int asix_init(struct eth_device *eth, bd_t *bd)
+{
+ int embd_phy;
+ unsigned char buf[ETH_ALEN];
+ u16 rx_ctl;
+ struct ueth_data *dev = (struct ueth_data *)eth->priv;
+ int timeout = 0;
+#define TIMEOUT_RESOLUTION 50 /* ms */
+ int link_detected;
+
+ debug("** %s()\n", __func__);
+
+ if (asix_write_gpio(dev,
+ AX_GPIO_RSE | AX_GPIO_GPO_2 | AX_GPIO_GPO2EN, 5) < 0)
+ goto out_err;
+
+ /* 0x10 is the phy id of the embedded 10/100 ethernet phy */
+ embd_phy = ((asix_get_phy_addr(dev) & 0x1f) == 0x10 ? 1 : 0);
+ if (asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT,
+ embd_phy, 0, 0, NULL) < 0) {
+ debug("Select PHY #1 failed\n");
+ goto out_err;
+ }
+
+ if (asix_sw_reset(dev, AX_SWRESET_IPPD | AX_SWRESET_PRL) < 0)
+ goto out_err;
+
+ if (asix_sw_reset(dev, AX_SWRESET_CLEAR) < 0)
+ goto out_err;
+
+ if (embd_phy) {
+ if (asix_sw_reset(dev, AX_SWRESET_IPRL) < 0)
+ goto out_err;
+ } else {
+ if (asix_sw_reset(dev, AX_SWRESET_PRTE) < 0)
+ goto out_err;
+ }
+
+ rx_ctl = asix_read_rx_ctl(dev);
+ debug("RX_CTL is 0x%04x after software reset\n", rx_ctl);
+ if (asix_write_rx_ctl(dev, 0x0000) < 0)
+ goto out_err;
+
+ rx_ctl = asix_read_rx_ctl(dev);
+ debug("RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
+
+ /* Get the MAC address */
+ if (asix_read_cmd(dev, AX_CMD_READ_NODE_ID,
+ 0, 0, ETH_ALEN, buf) < 0) {
+ debug("Failed to read MAC address.\n");
+ goto out_err;
+ }
+ memcpy(eth->enetaddr, buf, ETH_ALEN);
+ debug("MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
+ eth->enetaddr[0], eth->enetaddr[1],
+ eth->enetaddr[2], eth->enetaddr[3],
+ eth->enetaddr[4], eth->enetaddr[5]);
+
+ dev->phy_id = asix_get_phy_addr(dev);
+ if (dev->phy_id < 0)
+ debug("Failed to read phy id\n");
+
+ if (asix_sw_reset(dev, AX_SWRESET_PRL) < 0)
+ goto out_err;
+
+ if (asix_sw_reset(dev, AX_SWRESET_IPRL | AX_SWRESET_PRL) < 0)
+ goto out_err;
+
+ asix_mdio_write(dev, dev->phy_id, MII_BMCR, BMCR_RESET);
+ asix_mdio_write(dev, dev->phy_id, MII_ADVERTISE,
+ ADVERTISE_ALL | ADVERTISE_CSMA);
+ mii_nway_restart(dev);
+
+ if (asix_write_medium_mode(dev, AX88772_MEDIUM_DEFAULT) < 0)
+ goto out_err;
+
+ if (asix_write_cmd(dev, AX_CMD_WRITE_IPG0,
+ AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
+ AX88772_IPG2_DEFAULT, 0, NULL) < 0) {
+ debug("Write IPG,IPG1,IPG2 failed\n");
+ goto out_err;
+ }
+
+ if (asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL) < 0)
+ goto out_err;
+
+ do {
+ link_detected = asix_mdio_read(dev, dev->phy_id, MII_BMSR) &
+ BMSR_LSTATUS;
+ if (!link_detected) {
+ if (timeout == 0)
+ printf("Waiting for Ethernet connection... ");
+ udelay(TIMEOUT_RESOLUTION * 1000);
+ timeout += TIMEOUT_RESOLUTION;
+ }
+ } while (!link_detected && timeout < PHY_CONNECT_TIMEOUT);
+ if (link_detected) {
+ if (timeout != 0)
+ printf("done.\n");
+ } else {
+ printf("unable to connect.\n");
+ goto out_err;
+ }
+
+ return 0;
+out_err:
+ return -1;
+}
+
+static int asix_send(struct eth_device *eth, volatile void *packet, int length)
+{
+ struct ueth_data *dev = (struct ueth_data *)eth->priv;
+ int err;
+ u32 packet_len;
+ int actual_len;
+ unsigned char msg[PKTSIZE + sizeof(packet_len)];
+
+ debug("** %s(), len %d\n", __func__, length);
+
+ packet_len = (((length) ^ 0x0000ffff) << 16) + (length);
+ cpu_to_le32s(&packet_len);
+
+ memcpy(msg, &packet_len, sizeof(packet_len));
+ memcpy(msg + sizeof(packet_len), (void *)packet, length);
+ if (length & 1)
+ length++;
+
+ err = usb_bulk_msg(dev->pusb_dev,
+ usb_sndbulkpipe(dev->pusb_dev, dev->ep_out),
+ (void *)msg,
+ length + sizeof(packet_len),
+ &actual_len,
+ USB_BULK_SEND_TIMEOUT);
+ debug("Tx: len = %u, actual = %u, err = %d\n",
+ length + sizeof(packet_len), actual_len, err);
+
+ return err;
+}
+
+static int asix_recv(struct eth_device *eth)
+{
+ struct ueth_data *dev = (struct ueth_data *)eth->priv;
+ static unsigned char recv_buf[AX_RX_URB_SIZE];
+ unsigned char *buf_ptr;
+ int err;
+ int actual_len;
+ u32 packet_len;
+
+ debug("** %s()\n", __func__);
+
+ err = usb_bulk_msg(dev->pusb_dev,
+ usb_rcvbulkpipe(dev->pusb_dev, dev->ep_in),
+ (void *)recv_buf,
+ AX_RX_URB_SIZE,
+ &actual_len,
+ USB_BULK_RECV_TIMEOUT);
+ debug("Rx: len = %u, actual = %u, err = %d\n", AX_RX_URB_SIZE,
+ actual_len, err);
+ if (err != 0) {
+ debug("Rx: failed to receive\n");
+ return -1;
+ }
+ if (actual_len > AX_RX_URB_SIZE) {
+ debug("Rx: received too many bytes %d\n", actual_len);
+ return -1;
+ }
+
+ buf_ptr = recv_buf;
+ while (actual_len > 0) {
+ /*
+ * 1st 4 bytes contain the length of the actual data as two
+ * complementary 16-bit words. Extract the length of the data.
+ */
+ if (actual_len < sizeof(packet_len)) {
+ debug("Rx: incomplete packet length\n");
+ return -1;
+ }
+ memcpy(&packet_len, buf_ptr, sizeof(packet_len));
+ le32_to_cpus(&packet_len);
+ if (((packet_len >> 16) ^ 0xffff) != (packet_len & 0xffff)) {
+ debug("Rx: malformed packet length: %#x (%#x:%#x)\n",
+ packet_len, (packet_len >> 16) ^ 0xffff,
+ packet_len & 0xffff);
+ return -1;
+ }
+ packet_len = packet_len & 0xffff;
+ if (packet_len > actual_len - sizeof(packet_len)) {
+ debug("Rx: too large packet: %d\n", packet_len);
+ return -1;
+ }
+
+ /* Notify net stack */
+ NetReceive(buf_ptr + sizeof(packet_len), packet_len);
+
+ /* Adjust for next iteration. Packets are padded to 16-bits */
+ if (packet_len & 1)
+ packet_len++;
+ actual_len -= sizeof(packet_len) + packet_len;
+ buf_ptr += sizeof(packet_len) + packet_len;
+ }
+
+ return err;
+}
+
+static void asix_halt(struct eth_device *eth)
+{
+ debug("** %s()\n", __func__);
+}
+
+/*
+ * Asix probing functions
+ */
+void asix_eth_before_probe(void)
+{
+ curr_eth_dev = 0;
+}
+
+struct asix_dongle {
+ unsigned short vendor;
+ unsigned short product;
+};
+
+static struct asix_dongle asix_dongles[] = {
+ { 0x05ac, 0x1402 }, /* Apple USB Ethernet Adapter */
+ { 0x07d1, 0x3c05 }, /* D-Link DUB-E100 H/W Ver B1 */
+ { 0x0b95, 0x772a }, /* Cables-to-Go USB Ethernet Adapter */
+ { 0x0b95, 0x7720 }, /* Trendnet TU2-ET100 V3.0R */
+ { 0x0b95, 0x1720 }, /* SMC */
+ { 0x0db0, 0xa877 }, /* MSI - ASIX 88772a */
+ { 0x13b1, 0x0018 }, /* Linksys 200M v2.1 */
+ { 0x1557, 0x7720 }, /* 0Q0 cable ethernet */
+ { 0x2001, 0x3c05 }, /* DLink DUB-E100 H/W Ver B1 Alternate */
+ { 0x0000, 0x0000 } /* END - Do not remove */
+};
+
+/* Probe to see if a new device is actually an asix device */
+int asix_eth_probe(struct usb_device *dev, unsigned int ifnum,
+ struct ueth_data *ss)
+{
+ struct usb_interface *iface;
+ struct usb_interface_descriptor *iface_desc;
+ int i;
+
+ /* let's examine the device now */
+ iface = &dev->config.if_desc[ifnum];
+ iface_desc = &dev->config.if_desc[ifnum].desc;
+
+ for (i = 0; asix_dongles[i].vendor != 0; i++) {
+ if (dev->descriptor.idVendor == asix_dongles[i].vendor &&
+ dev->descriptor.idProduct == asix_dongles[i].product)
+ /* Found a supported dongle */
+ break;
+ }
+
+ if (asix_dongles[i].vendor == 0)
+ return 0;
+
+ memset(ss, 0, sizeof(struct ueth_data));
+
+ /* At this point, we know we've got a live one */
+ debug("\n\nUSB Ethernet device detected: %#04x:%#04x\n",
+ dev->descriptor.idVendor, dev->descriptor.idProduct);
+
+ /* Initialize the ueth_data structure with some useful info */
+ ss->ifnum = ifnum;
+ ss->pusb_dev = dev;
+ ss->subclass = iface_desc->bInterfaceSubClass;
+ ss->protocol = iface_desc->bInterfaceProtocol;
+
+ /*
+ * We are expecting a minimum of 3 endpoints - in, out (bulk), and
+ * int. We will ignore any others.
+ */
+ for (i = 0; i < iface_desc->bNumEndpoints; i++) {
+ /* is it an BULK endpoint? */
+ if ((iface->ep_desc[i].bmAttributes &
+ USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
+ if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
+ ss->ep_in = iface->ep_desc[i].bEndpointAddress &
+ USB_ENDPOINT_NUMBER_MASK;
+ else
+ ss->ep_out =
+ iface->ep_desc[i].bEndpointAddress &
+ USB_ENDPOINT_NUMBER_MASK;
+ }
+
+ /* is it an interrupt endpoint? */
+ if ((iface->ep_desc[i].bmAttributes &
+ USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
+ ss->ep_int = iface->ep_desc[i].bEndpointAddress &
+ USB_ENDPOINT_NUMBER_MASK;
+ ss->irqinterval = iface->ep_desc[i].bInterval;
+ }
+ }
+ debug("Endpoints In %d Out %d Int %d\n",
+ ss->ep_in, ss->ep_out, ss->ep_int);
+
+ /* Do some basic sanity checks, and bail if we find a problem */
+ if (usb_set_interface(dev, iface_desc->bInterfaceNumber, 0) ||
+ !ss->ep_in || !ss->ep_out || !ss->ep_int) {
+ debug("Problems with device\n");
+ return 0;
+ }
+ dev->privptr = (void *)ss;
+ return 1;
+}
+
+int asix_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
+ struct eth_device *eth)
+{
+ if (!eth) {
+ debug("%s: missing parameter.\n", __func__);
+ return 0;
+ }
+ sprintf(eth->name, "%s%d", ASIX_BASE_NAME, curr_eth_dev++);
+ eth->init = asix_init;
+ eth->send = asix_send;
+ eth->recv = asix_recv;
+ eth->halt = asix_halt;
+ eth->priv = ss;
+
+ return 1;
+}
projects / u-boot / commitdiff