[PATCH] Add support for Davicom DM96xx based USB 10/100 ethernet devices
hyyoxhk
hyyoxhk at 163.com
Sat Sep 12 17:39:20 CEST 2020
Ported from Linux driver - drivers/net/usb9601.c
Signed-off-by: hyyoxhk <hyyoxhk at 163.com>
---
drivers/usb/eth/Kconfig | 8 +
drivers/usb/eth/Makefile | 1 +
drivers/usb/eth/dm9601.c | 521 +++++++++++++++++++++++++++++++++++++++
3 files changed, 530 insertions(+)
create mode 100644 drivers/usb/eth/dm9601.c
diff --git a/drivers/usb/eth/Kconfig b/drivers/usb/eth/Kconfig
index 2f6bfa8e71..8a47ca0ec4 100644
--- a/drivers/usb/eth/Kconfig
+++ b/drivers/usb/eth/Kconfig
@@ -62,4 +62,12 @@ config USB_ETHER_SMSC95XX
Say Y here if you would like to support SMSC LAN95xx based USB 2.0
Ethernet Devices.
+config USB_ETHER_DM9601
+ bool "Davicom DM96xx based USB 10/100 ethernet devices"
+ depends on USB_HOST_ETHER
+ depends on DM_ETH
+ ---help---
+ This option adds support for Davicom DM9601/DM9620/DM9621A
+ based USB 10/100 Ethernet adapters.
+
endif
diff --git a/drivers/usb/eth/Makefile b/drivers/usb/eth/Makefile
index 2e5d0782e8..044b12f028 100644
--- a/drivers/usb/eth/Makefile
+++ b/drivers/usb/eth/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_USB_ETHER_ASIX) += asix.o
obj-$(CONFIG_USB_ETHER_ASIX88179) += asix88179.o
obj-$(CONFIG_USB_ETHER_MCS7830) += mcs7830.o
obj-$(CONFIG_USB_ETHER_SMSC95XX) += smsc95xx.o
+obj-$(CONFIG_USB_ETHER_DM9601) += dm9601.o
obj-$(CONFIG_USB_ETHER_LAN75XX) += lan7x.o lan75xx.o
obj-$(CONFIG_USB_ETHER_LAN78XX) += lan7x.o lan78xx.o
obj-$(CONFIG_USB_ETHER_RTL8152) += r8152.o r8152_fw.o
diff --git a/drivers/usb/eth/dm9601.c b/drivers/usb/eth/dm9601.c
new file mode 100644
index 0000000000..f5956c7c73
--- /dev/null
+++ b/drivers/usb/eth/dm9601.c
@@ -0,0 +1,521 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Davicom DM96xx USB 10/100Mbps ethernet devices
+ *
+ * Ported from Linux driver - drivers/net/usb9601.c
+ *
+ * Copyright (C) 2020 hey <hyyoxhk at 163.com>
+ */
+
+#include <common.h>
+#include <linux/delay.h>
+#include <dm.h>
+#include <usb.h>
+#include <memalign.h>
+#include <errno.h>
+#include <linux/mii.h>
+#include "usb_ether.h"
+
+/* control requests */
+#define DM_READ_REGS 0x00
+#define DM_WRITE_REGS 0x01
+#define DM_READ_MEMS 0x02
+#define DM_WRITE_REG 0x03
+#define DM_WRITE_MEMS 0x05
+#define DM_WRITE_MEM 0x07
+
+/* registers */
+#define DM_NET_CTRL 0x00
+#define DM_RX_CTRL 0x05
+#define DM_SHARED_CTRL 0x0b
+#define DM_SHARED_ADDR 0x0c
+#define DM_SHARED_DATA 0x0d /* low + high */
+#define DM_PHY_ADDR 0x10 /* 6 bytes */
+#define DM_MCAST_ADDR 0x16 /* 8 bytes */
+#define DM_GPR_CTRL 0x1e
+#define DM_GPR_DATA 0x1f
+#define DM_CHIP_ID 0x2c
+#define DM_MODE_CTRL 0x91 /* only on dm9620 */
+
+/* chip id values */
+#define ID_DM9601 0
+#define ID_DM9620 1
+
+#define DM_MAX_MCAST 64
+#define DM_MCAST_SIZE 8
+#define DM_EEPROM_LEN 256
+#define DM_TX_OVERHEAD 2 /* 2 byte header */
+#define DM_RX_OVERHEAD 7 /* 3 byte header + 4 byte crc tail */
+#define DM_TIMEOUT 1000
+
+#define USB_CTRL_SET_TIMEOUT 5000
+#define PHY_CONNECT_TIMEOUT 5000
+#define USB_BULK_SEND_TIMEOUT 5000
+#define USB_BULK_RECV_TIMEOUT 5000
+#define RX_URB_SIZE 2048
+
+/* driver private */
+struct dm9601_private {
+ struct ueth_data ueth;
+};
+
+static int dm_read(struct usb_device *udev, u8 reg, u16 length, void *data)
+{
+ ALLOC_CACHE_ALIGN_BUFFER(u8, v, length);
+ int err;
+
+ err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+ DM_READ_REGS,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, reg, v, length,
+ USB_CTRL_SET_TIMEOUT);
+
+ memcpy(data, v, length);
+
+ if (err != length && err >= 0)
+ err = -EINVAL;
+
+ return err;
+}
+
+static int dm_read_reg(struct usb_device *udev, u8 reg, u8 *value)
+{
+ return dm_read(udev, reg, 1, value);
+}
+
+static int dm_write(struct usb_device *udev, u8 reg, u16 length, void *data)
+{
+ ALLOC_CACHE_ALIGN_BUFFER(u8, v, length);
+ int err;
+
+ memcpy(v, data, length);
+
+ err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ DM_WRITE_REGS,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, reg, v, length,
+ USB_CTRL_SET_TIMEOUT);
+ if (err >= 0 && err < length)
+ err = -EINVAL;
+
+ return err;
+}
+
+static int dm_write_reg(struct usb_device *udev, u8 reg, u8 value)
+{
+ ALLOC_CACHE_ALIGN_BUFFER(u8, v, 1);
+ v[0] = value;
+
+ return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ DM_WRITE_REG,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ v[0], reg, NULL, 0,
+ USB_CTRL_SET_TIMEOUT);
+}
+
+static int dm_read_shared_word(struct usb_device *udev, int phy, u8 reg, __le16 *value)
+{
+ int ret, i;
+
+ dm_write_reg(udev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
+ dm_write_reg(udev, DM_SHARED_CTRL, phy ? 0xc : 0x4);
+
+ for (i = 0; i < DM_TIMEOUT; i++) {
+ u8 tmp = 0;
+
+ udelay(1);
+ ret = dm_read_reg(udev, DM_SHARED_CTRL, &tmp);
+ if (ret < 0)
+ goto out;
+
+ /* ready */
+ if ((tmp & 1) == 0)
+ break;
+ }
+
+ if (i == DM_TIMEOUT) {
+ printf("%s read timed out!\n", phy ? "phy" : "eeprom");
+ ret = -EIO;
+ goto out;
+ }
+
+ dm_write_reg(udev, DM_SHARED_CTRL, 0x0);
+ ret = dm_read(udev, DM_SHARED_DATA, 2, value);
+
+out:
+ return ret;
+}
+
+static int dm_write_shared_word(struct usb_device *udev, int phy, u8 reg, __le16 value)
+{
+ int ret, i;
+
+ ret = dm_write(udev, DM_SHARED_DATA, 2, &value);
+ if (ret < 0)
+ goto out;
+
+ dm_write_reg(udev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
+ dm_write_reg(udev, DM_SHARED_CTRL, phy ? 0x1a : 0x12);
+
+ for (i = 0; i < DM_TIMEOUT; i++) {
+ u8 tmp = 0;
+
+ udelay(1);
+ ret = dm_read_reg(udev, DM_SHARED_CTRL, &tmp);
+ if (ret < 0)
+ goto out;
+
+ /* ready */
+ if ((tmp & 1) == 0)
+ break;
+ }
+
+ if (i == DM_TIMEOUT) {
+ printf("%s write timed out!\n", phy ? "phy" : "eeprom");
+ ret = -EIO;
+ goto out;
+ }
+
+ dm_write_reg(udev, DM_SHARED_CTRL, 0x0);
+
+out:
+ return ret;
+}
+
+static int dm9601_mdio_read(struct ueth_data *ueth, int phy_id, int loc)
+{
+ __le16 res;
+
+ if (phy_id) {
+ printf("Only internal phy supported\n");
+ return 0;
+ }
+
+ dm_read_shared_word(ueth->pusb_dev, 1, loc, &res);
+
+ return le16_to_cpu(res);
+}
+
+static void dm9601_mdio_write(struct ueth_data *ueth, int phy_id, int loc, int val)
+{
+ __le16 res = cpu_to_le16(val);
+
+ if (phy_id) {
+ printf("Only internal phy supported\n");
+ return;
+ }
+
+ dm_write_shared_word(ueth->pusb_dev, 1, loc, res);
+}
+
+static int dm9601_set_mac_address(struct usb_device *udev, u8 *enetaddr)
+{
+ if (!is_valid_ethaddr(enetaddr)) {
+ printf("not setting invalid mac address %pM\n", enetaddr);
+ return -EINVAL;
+ }
+
+ dm_write(udev, DM_PHY_ADDR, ETH_ALEN, enetaddr);
+
+ return 0;
+}
+
+/**
+ * mii_nway_restart - restart NWay (autonegotiation) for this interface
+ * @mii: the MII interface
+ *
+ * Returns 0 on success, negative on error.
+ */
+static int mii_nway_restart(struct ueth_data *ueth)
+{
+ int bmcr;
+ int r = -EINVAL;
+
+ /* if autoneg is off, it's an error */
+ bmcr = dm9601_mdio_read(ueth, ueth->phy_id, MII_BMCR);
+
+ if (bmcr & BMCR_ANENABLE) {
+ bmcr |= BMCR_ANRESTART;
+ dm9601_mdio_write(ueth, ueth->phy_id, MII_BMCR, bmcr);
+ r = 0;
+ }
+
+ return r;
+}
+
+static void dm9601_set_multicast(struct usb_device *udev)
+{
+ u8 hashes[DM_MCAST_SIZE];
+ u8 rx_ctl = 0x31;
+
+ memset(hashes, 0x00, DM_MCAST_SIZE);
+ hashes[DM_MCAST_SIZE - 1] |= 0x80; /* broadcast address */
+
+ dm_write(udev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes);
+ dm_write_reg(udev, DM_RX_CTRL, rx_ctl);
+}
+
+static int dm9601_bind(struct udevice *dev)
+{
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ struct dm9601_private *priv = dev_get_priv(dev);
+ struct ueth_data *ueth = &priv->ueth;
+ int ret = 0;
+ u8 mac[ETH_ALEN], id;
+
+ /* reset */
+ dm_write_reg(ueth->pusb_dev, DM_NET_CTRL, 1);
+ udelay(20);
+
+ /* read MAC */
+ if (dm_read(ueth->pusb_dev, DM_PHY_ADDR, ETH_ALEN, mac) < 0) {
+ printf("Error reading MAC address\n");
+ ret = -ENODEV;
+ goto out;
+ }
+
+ /*
+ * Overwrite the auto-generated address only with good ones.
+ */
+ if (is_valid_ethaddr(mac))
+ memcpy(pdata->enetaddr, mac, ETH_ALEN);
+ else
+ printf("dm9601: No valid MAC address in EEPROM, using %pM\n", pdata->enetaddr);
+
+ if (dm_read_reg(ueth->pusb_dev, DM_CHIP_ID, &id) < 0) {
+ printf("Error reading chip ID\n");
+ ret = -ENODEV;
+ goto out;
+ }
+
+ /* put dm9620 devices in dm9601 mode */
+ if (id == ID_DM9620) {
+ u8 mode;
+
+ if (dm_read_reg(ueth->pusb_dev, DM_MODE_CTRL, &mode) < 0) {
+ printf("Error reading MODE_CTRL\n");
+ ret = -ENODEV;
+ goto out;
+ }
+ dm_write_reg(ueth->pusb_dev, DM_MODE_CTRL, mode & 0x7f);
+ }
+
+ /* power up phy */
+ dm_write_reg(ueth->pusb_dev, DM_GPR_CTRL, 1);
+ dm_write_reg(ueth->pusb_dev, DM_GPR_DATA, 0);
+
+ /* receive broadcast packets */
+ dm9601_set_multicast(ueth->pusb_dev);
+
+ dm9601_mdio_write(ueth, ueth->phy_id, MII_BMCR, BMCR_RESET);
+ dm9601_mdio_write(ueth, ueth->phy_id, MII_ADVERTISE,
+ ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
+ mii_nway_restart(ueth);
+
+out:
+ return ret;
+}
+
+static int dm9601_eth_start(struct udevice *dev)
+{
+ struct dm9601_private *priv = dev_get_priv(dev);
+ struct ueth_data *ueth = &priv->ueth;
+ int timeout = 0;
+ int link_detected;
+
+ debug("\n----> %s()\n", __func__);
+
+#define TIMEOUT_RESOLUTION 50 /* ms */
+ do {
+ link_detected = dm9601_mdio_read(ueth, ueth->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");
+ return -EIO;
+ }
+ return 0;
+}
+
+static int dm9601_eth_send(struct udevice *dev, void *packet, int length)
+{
+ int err;
+ u16 packet_len;
+ int actual_len;
+ struct dm9601_private *priv = dev_get_priv(dev);
+ struct ueth_data *ueth = &priv->ueth;
+
+ ALLOC_CACHE_ALIGN_BUFFER(unsigned char, msg, PKTSIZE + DM_TX_OVERHEAD);
+
+ /* format:
+ * b1: packet length low
+ * b2: packet length high
+ * b3..n: packet data
+ */
+
+ packet_len = length;
+ cpu_to_le16s(&packet_len);
+
+ memcpy(msg, &packet_len, DM_TX_OVERHEAD);
+ memcpy(msg + DM_TX_OVERHEAD, (void *)packet, length);
+
+ err = usb_bulk_msg(ueth->pusb_dev,
+ usb_sndbulkpipe(ueth->pusb_dev, ueth->ep_out),
+ (void *)msg,
+ length + sizeof(packet_len),
+ &actual_len,
+ USB_BULK_SEND_TIMEOUT);
+
+ return err;
+}
+
+static int dm9601_eth_recv(struct udevice *dev, int flags, uchar **packetp)
+{
+ struct dm9601_private *priv = dev_get_priv(dev);
+ struct ueth_data *ueth = &priv->ueth;
+ u8 *ptr;
+ int ret, len;
+ u8 status;
+ u32 packet_len;
+
+ 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);
+ }
+
+ /* format:
+ * b1: rx status
+ * b2: packet length (incl crc) low
+ * b3: packet length (incl crc) high
+ * b4..n-4: packet data
+ * bn-3..bn: ethernet crc
+ */
+
+ if (unlikely(len < DM_RX_OVERHEAD)) {
+ debug("unexpected tiny rx frame\n");
+ goto err;
+ }
+
+ status = ptr[0];
+ packet_len = (ptr[1] | (ptr[2] << 8)) - 4;
+
+ if (unlikely(status & 0xbf)) {
+ debug("Rx: packet status failure: %d\n", status);
+ goto err;
+ }
+
+ if (packet_len > len - DM_RX_OVERHEAD) {
+ debug("Rx: too large packet: %d\n", packet_len);
+ goto err;
+ }
+
+ *packetp = ptr + 3;
+
+ return packet_len;
+
+err:
+ usb_ether_advance_rxbuf(ueth, -1);
+ return -EINVAL;
+}
+
+static int dm9601_free_pkt(struct udevice *dev, uchar *packet, int packet_len)
+{
+ struct dm9601_private *priv = dev_get_priv(dev);
+
+ usb_ether_advance_rxbuf(&priv->ueth, DM_RX_OVERHEAD + packet_len);
+
+ return 0;
+}
+
+static void dm9601_eth_stop(struct udevice *dev)
+{
+ debug("** %s()\n", __func__);
+}
+
+static int dm9601_write_hwaddr(struct udevice *dev)
+{
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ struct dm9601_private *priv = dev_get_priv(dev);
+ struct ueth_data *ueth = &priv->ueth;
+
+ return dm9601_set_mac_address(ueth->pusb_dev, pdata->enetaddr);
+}
+
+static int dm9601_eth_probe(struct udevice *dev)
+{
+ struct dm9601_private *priv = dev_get_priv(dev);
+ struct ueth_data *ueth = &priv->ueth;
+ int ret;
+
+ ret = usb_ether_register(dev, ueth, RX_URB_SIZE);
+ if (ret) {
+ printf("usb ether register failed! ret = %d\n", ret);
+ return ret;
+ }
+
+ if (dm9601_bind(dev)) {
+ printf("basic init failed!\n");
+ goto err;
+ }
+
+ return 0;
+err:
+ return usb_ether_deregister(ueth);
+}
+
+static const struct eth_ops dm9601_eth_ops = {
+ .start = dm9601_eth_start,
+ .send = dm9601_eth_send,
+ .recv = dm9601_eth_recv,
+ .free_pkt = dm9601_free_pkt,
+ .stop = dm9601_eth_stop,
+ .write_hwaddr = dm9601_write_hwaddr,
+};
+
+U_BOOT_DRIVER(dm9601_eth) = {
+ .name = "dm9601_eth",
+ .id = UCLASS_ETH,
+ .probe = dm9601_eth_probe,
+ .ops = &dm9601_eth_ops,
+ .priv_auto_alloc_size = sizeof(struct dm9601_private),
+ .platdata_auto_alloc_size = sizeof(struct eth_pdata),
+};
+
+static const struct usb_device_id dm9601_eth_id_table[] = {
+ { USB_DEVICE(0x07aa, 0x9601) }, /* Corega FEther USB-TXC */
+ { USB_DEVICE(0x0a46, 0x9601) }, /* Davicom USB-100 */
+ { USB_DEVICE(0x0a46, 0x6688) }, /* ZT6688 USB NIC */
+ { USB_DEVICE(0x0a46, 0x0268) }, /* ShanTou ST268 USB NIC */
+ { USB_DEVICE(0x0a46, 0x8515) }, /* ADMtek ADM8515 USB NIC */
+ { USB_DEVICE(0x0a47, 0x9601) }, /* Hirose USB-100 */
+ { USB_DEVICE(0x0fe6, 0x8101) }, /* DM9601 USB to Fast Ethernet Adapter */
+ { USB_DEVICE(0x0fe6, 0x9700) }, /* DM9601 USB to Fast Ethernet Adapter */
+ { USB_DEVICE(0x0a46, 0x9000) }, /* DM9000E */
+ { USB_DEVICE(0x0a46, 0x9620) }, /* DM9620 USB to Fast Ethernet Adapter */
+ { USB_DEVICE(0x0a46, 0x9621) }, /* DM9621A USB to Fast Ethernet Adapter */
+ { USB_DEVICE(0x0a46, 0x9622) }, /* DM9622 USB to Fast Ethernet Adapter */
+ { USB_DEVICE(0x0a46, 0x0269) }, /* DM962OA USB to Fast Ethernet Adapter */
+ { USB_DEVICE(0x0a46, 0x1269) }, /* DM9621A USB to Fast Ethernet Adapter */
+ {},
+};
+
+U_BOOT_USB_DEVICE(dm9601_eth, dm9601_eth_id_table);
--
2.17.1
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