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path: root/drivers/net/usb/sr9800.c
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Diffstat (limited to 'drivers/net/usb/sr9800.c')
-rw-r--r--drivers/net/usb/sr9800.c875
1 files changed, 875 insertions, 0 deletions
diff --git a/drivers/net/usb/sr9800.c b/drivers/net/usb/sr9800.c
new file mode 100644
index 0000000000..f5e19f3ef6
--- /dev/null
+++ b/drivers/net/usb/sr9800.c
@@ -0,0 +1,875 @@
+/* CoreChip-sz SR9800 one chip USB 2.0 Ethernet Devices
+ *
+ * Author : Liu Junliang <liujunliang_ljl@163.com>
+ *
+ * Based on asix_common.c, asix_devices.c
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.*
+ */
+
+#include <linux/module.h>
+#include <linux/kmod.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/workqueue.h>
+#include <linux/mii.h>
+#include <linux/usb.h>
+#include <linux/crc32.h>
+#include <linux/usb/usbnet.h>
+#include <linux/slab.h>
+#include <linux/if_vlan.h>
+
+#include "sr9800.h"
+
+static int sr_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+ u16 size, void *data)
+{
+ int err;
+
+ err = usbnet_read_cmd(dev, cmd, SR_REQ_RD_REG, value, index,
+ data, size);
+ if ((err != size) && (err >= 0))
+ err = -EINVAL;
+
+ return err;
+}
+
+static int sr_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+ u16 size, void *data)
+{
+ int err;
+
+ err = usbnet_write_cmd(dev, cmd, SR_REQ_WR_REG, value, index,
+ data, size);
+ if ((err != size) && (err >= 0))
+ err = -EINVAL;
+
+ return err;
+}
+
+static void
+sr_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+ u16 size, void *data)
+{
+ usbnet_write_cmd_async(dev, cmd, SR_REQ_WR_REG, value, index, data,
+ size);
+}
+
+static int sr_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
+{
+ int offset = 0;
+
+ /* This check is no longer done by usbnet */
+ if (skb->len < dev->net->hard_header_len)
+ return 0;
+
+ while (offset + sizeof(u32) < skb->len) {
+ struct sk_buff *sr_skb;
+ u16 size;
+ u32 header = get_unaligned_le32(skb->data + offset);
+
+ offset += sizeof(u32);
+ /* get the packet length */
+ size = (u16) (header & 0x7ff);
+ if (size != ((~header >> 16) & 0x07ff)) {
+ netdev_err(dev->net, "%s : Bad Header Length\n",
+ __func__);
+ return 0;
+ }
+
+ if ((size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) ||
+ (size + offset > skb->len)) {
+ netdev_err(dev->net, "%s : Bad RX Length %d\n",
+ __func__, size);
+ return 0;
+ }
+ sr_skb = netdev_alloc_skb_ip_align(dev->net, size);
+ if (!sr_skb)
+ return 0;
+
+ skb_put(sr_skb, size);
+ memcpy(sr_skb->data, skb->data + offset, size);
+ usbnet_skb_return(dev, sr_skb);
+
+ offset += (size + 1) & 0xfffe;
+ }
+
+ if (skb->len != offset) {
+ netdev_err(dev->net, "%s : Bad SKB Length %d\n", __func__,
+ skb->len);
+ return 0;
+ }
+
+ return 1;
+}
+
+static struct sk_buff *sr_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
+ gfp_t flags)
+{
+ int headroom = skb_headroom(skb);
+ int tailroom = skb_tailroom(skb);
+ u32 padbytes = 0xffff0000;
+ u32 packet_len;
+ int padlen;
+ void *ptr;
+
+ padlen = ((skb->len + 4) % (dev->maxpacket - 1)) ? 0 : 4;
+
+ if ((!skb_cloned(skb)) && ((headroom + tailroom) >= (4 + padlen))) {
+ if ((headroom < 4) || (tailroom < padlen)) {
+ skb->data = memmove(skb->head + 4, skb->data,
+ skb->len);
+ skb_set_tail_pointer(skb, skb->len);
+ }
+ } else {
+ struct sk_buff *skb2;
+ skb2 = skb_copy_expand(skb, 4, padlen, flags);
+ dev_kfree_skb_any(skb);
+ skb = skb2;
+ if (!skb)
+ return NULL;
+ }
+
+ ptr = skb_push(skb, 4);
+ packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
+ put_unaligned_le32(packet_len, ptr);
+
+ if (padlen) {
+ put_unaligned_le32(padbytes, skb_tail_pointer(skb));
+ skb_put(skb, sizeof(padbytes));
+ }
+
+ usbnet_set_skb_tx_stats(skb, 1, 0);
+ return skb;
+}
+
+static void sr_status(struct usbnet *dev, struct urb *urb)
+{
+ struct sr9800_int_data *event;
+ int link;
+
+ if (urb->actual_length < 8)
+ return;
+
+ event = urb->transfer_buffer;
+ link = event->link & 0x01;
+ if (netif_carrier_ok(dev->net) != link) {
+ usbnet_link_change(dev, link, 1);
+ netdev_dbg(dev->net, "Link Status is: %d\n", link);
+ }
+
+ return;
+}
+
+static inline int sr_set_sw_mii(struct usbnet *dev)
+{
+ int ret;
+
+ ret = sr_write_cmd(dev, SR_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
+ if (ret < 0)
+ netdev_err(dev->net, "Failed to enable software MII access\n");
+ return ret;
+}
+
+static inline int sr_set_hw_mii(struct usbnet *dev)
+{
+ int ret;
+
+ ret = sr_write_cmd(dev, SR_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
+ if (ret < 0)
+ netdev_err(dev->net, "Failed to enable hardware MII access\n");
+ return ret;
+}
+
+static inline int sr_get_phy_addr(struct usbnet *dev)
+{
+ u8 buf[2];
+ int ret;
+
+ ret = sr_read_cmd(dev, SR_CMD_READ_PHY_ID, 0, 0, 2, buf);
+ if (ret < 0) {
+ netdev_err(dev->net, "%s : Error reading PHYID register:%02x\n",
+ __func__, ret);
+ goto out;
+ }
+ netdev_dbg(dev->net, "%s : returning 0x%04x\n", __func__,
+ *((__le16 *)buf));
+
+ ret = buf[1];
+
+out:
+ return ret;
+}
+
+static int sr_sw_reset(struct usbnet *dev, u8 flags)
+{
+ int ret;
+
+ ret = sr_write_cmd(dev, SR_CMD_SW_RESET, flags, 0, 0, NULL);
+ if (ret < 0)
+ netdev_err(dev->net, "Failed to send software reset:%02x\n",
+ ret);
+
+ return ret;
+}
+
+static u16 sr_read_rx_ctl(struct usbnet *dev)
+{
+ __le16 v;
+ int ret;
+
+ ret = sr_read_cmd(dev, SR_CMD_READ_RX_CTL, 0, 0, 2, &v);
+ if (ret < 0) {
+ netdev_err(dev->net, "Error reading RX_CTL register:%02x\n",
+ ret);
+ goto out;
+ }
+
+ ret = le16_to_cpu(v);
+out:
+ return ret;
+}
+
+static int sr_write_rx_ctl(struct usbnet *dev, u16 mode)
+{
+ int ret;
+
+ netdev_dbg(dev->net, "%s : mode = 0x%04x\n", __func__, mode);
+ ret = sr_write_cmd(dev, SR_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
+ if (ret < 0)
+ netdev_err(dev->net,
+ "Failed to write RX_CTL mode to 0x%04x:%02x\n",
+ mode, ret);
+
+ return ret;
+}
+
+static u16 sr_read_medium_status(struct usbnet *dev)
+{
+ __le16 v;
+ int ret;
+
+ ret = sr_read_cmd(dev, SR_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
+ if (ret < 0) {
+ netdev_err(dev->net,
+ "Error reading Medium Status register:%02x\n", ret);
+ return ret; /* TODO: callers not checking for error ret */
+ }
+
+ return le16_to_cpu(v);
+}
+
+static int sr_write_medium_mode(struct usbnet *dev, u16 mode)
+{
+ int ret;
+
+ netdev_dbg(dev->net, "%s : mode = 0x%04x\n", __func__, mode);
+ ret = sr_write_cmd(dev, SR_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
+ if (ret < 0)
+ netdev_err(dev->net,
+ "Failed to write Medium Mode mode to 0x%04x:%02x\n",
+ mode, ret);
+ return ret;
+}
+
+static int sr_write_gpio(struct usbnet *dev, u16 value, int sleep)
+{
+ int ret;
+
+ netdev_dbg(dev->net, "%s : value = 0x%04x\n", __func__, value);
+ ret = sr_write_cmd(dev, SR_CMD_WRITE_GPIOS, value, 0, 0, NULL);
+ if (ret < 0)
+ netdev_err(dev->net, "Failed to write GPIO value 0x%04x:%02x\n",
+ value, ret);
+ if (sleep)
+ msleep(sleep);
+
+ return ret;
+}
+
+/* SR9800 have a 16-bit RX_CTL value */
+static void sr_set_multicast(struct net_device *net)
+{
+ struct usbnet *dev = netdev_priv(net);
+ struct sr_data *data = (struct sr_data *)&dev->data;
+ u16 rx_ctl = SR_DEFAULT_RX_CTL;
+
+ if (net->flags & IFF_PROMISC) {
+ rx_ctl |= SR_RX_CTL_PRO;
+ } else if (net->flags & IFF_ALLMULTI ||
+ netdev_mc_count(net) > SR_MAX_MCAST) {
+ rx_ctl |= SR_RX_CTL_AMALL;
+ } else if (netdev_mc_empty(net)) {
+ /* just broadcast and directed */
+ } else {
+ /* We use the 20 byte dev->data
+ * for our 8 byte filter buffer
+ * to avoid allocating memory that
+ * is tricky to free later
+ */
+ struct netdev_hw_addr *ha;
+ u32 crc_bits;
+
+ memset(data->multi_filter, 0, SR_MCAST_FILTER_SIZE);
+
+ /* Build the multicast hash filter. */
+ netdev_for_each_mc_addr(ha, net) {
+ crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
+ data->multi_filter[crc_bits >> 3] |=
+ 1 << (crc_bits & 7);
+ }
+
+ sr_write_cmd_async(dev, SR_CMD_WRITE_MULTI_FILTER, 0, 0,
+ SR_MCAST_FILTER_SIZE, data->multi_filter);
+
+ rx_ctl |= SR_RX_CTL_AM;
+ }
+
+ sr_write_cmd_async(dev, SR_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
+}
+
+static int sr_mdio_read(struct net_device *net, int phy_id, int loc)
+{
+ struct usbnet *dev = netdev_priv(net);
+ __le16 res = 0;
+
+ mutex_lock(&dev->phy_mutex);
+ sr_set_sw_mii(dev);
+ sr_read_cmd(dev, SR_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, &res);
+ sr_set_hw_mii(dev);
+ mutex_unlock(&dev->phy_mutex);
+
+ netdev_dbg(dev->net,
+ "%s : phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n", __func__,
+ phy_id, loc, le16_to_cpu(res));
+
+ return le16_to_cpu(res);
+}
+
+static void
+sr_mdio_write(struct net_device *net, int phy_id, int loc, int val)
+{
+ struct usbnet *dev = netdev_priv(net);
+ __le16 res = cpu_to_le16(val);
+
+ netdev_dbg(dev->net,
+ "%s : phy_id=0x%02x, loc=0x%02x, val=0x%04x\n", __func__,
+ phy_id, loc, val);
+ mutex_lock(&dev->phy_mutex);
+ sr_set_sw_mii(dev);
+ sr_write_cmd(dev, SR_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
+ sr_set_hw_mii(dev);
+ mutex_unlock(&dev->phy_mutex);
+}
+
+/* Get the PHY Identifier from the PHYSID1 & PHYSID2 MII registers */
+static u32 sr_get_phyid(struct usbnet *dev)
+{
+ int phy_reg;
+ u32 phy_id;
+ int i;
+
+ /* Poll for the rare case the FW or phy isn't ready yet. */
+ for (i = 0; i < 100; i++) {
+ phy_reg = sr_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID1);
+ if (phy_reg != 0 && phy_reg != 0xFFFF)
+ break;
+ mdelay(1);
+ }
+
+ if (phy_reg <= 0 || phy_reg == 0xFFFF)
+ return 0;
+
+ phy_id = (phy_reg & 0xffff) << 16;
+
+ phy_reg = sr_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID2);
+ if (phy_reg < 0)
+ return 0;
+
+ phy_id |= (phy_reg & 0xffff);
+
+ return phy_id;
+}
+
+static void
+sr_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
+{
+ struct usbnet *dev = netdev_priv(net);
+ u8 opt;
+
+ if (sr_read_cmd(dev, SR_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
+ wolinfo->supported = 0;
+ wolinfo->wolopts = 0;
+ return;
+ }
+ wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
+ wolinfo->wolopts = 0;
+ if (opt & SR_MONITOR_LINK)
+ wolinfo->wolopts |= WAKE_PHY;
+ if (opt & SR_MONITOR_MAGIC)
+ wolinfo->wolopts |= WAKE_MAGIC;
+}
+
+static int
+sr_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
+{
+ struct usbnet *dev = netdev_priv(net);
+ u8 opt = 0;
+
+ if (wolinfo->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
+ return -EINVAL;
+
+ if (wolinfo->wolopts & WAKE_PHY)
+ opt |= SR_MONITOR_LINK;
+ if (wolinfo->wolopts & WAKE_MAGIC)
+ opt |= SR_MONITOR_MAGIC;
+
+ if (sr_write_cmd(dev, SR_CMD_WRITE_MONITOR_MODE,
+ opt, 0, 0, NULL) < 0)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int sr_get_eeprom_len(struct net_device *net)
+{
+ struct usbnet *dev = netdev_priv(net);
+ struct sr_data *data = (struct sr_data *)&dev->data;
+
+ return data->eeprom_len;
+}
+
+static int sr_get_eeprom(struct net_device *net,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ struct usbnet *dev = netdev_priv(net);
+ __le16 *ebuf = (__le16 *)data;
+ int ret;
+ int i;
+
+ /* Crude hack to ensure that we don't overwrite memory
+ * if an odd length is supplied
+ */
+ if (eeprom->len % 2)
+ return -EINVAL;
+
+ eeprom->magic = SR_EEPROM_MAGIC;
+
+ /* sr9800 returns 2 bytes from eeprom on read */
+ for (i = 0; i < eeprom->len / 2; i++) {
+ ret = sr_read_cmd(dev, SR_CMD_READ_EEPROM, eeprom->offset + i,
+ 0, 2, &ebuf[i]);
+ if (ret < 0)
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static void sr_get_drvinfo(struct net_device *net,
+ struct ethtool_drvinfo *info)
+{
+ /* Inherit standard device info */
+ usbnet_get_drvinfo(net, info);
+ strncpy(info->driver, DRIVER_NAME, sizeof(info->driver));
+ strncpy(info->version, DRIVER_VERSION, sizeof(info->version));
+}
+
+static u32 sr_get_link(struct net_device *net)
+{
+ struct usbnet *dev = netdev_priv(net);
+
+ return mii_link_ok(&dev->mii);
+}
+
+static int sr_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
+{
+ struct usbnet *dev = netdev_priv(net);
+
+ return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
+}
+
+static int sr_set_mac_address(struct net_device *net, void *p)
+{
+ struct usbnet *dev = netdev_priv(net);
+ struct sr_data *data = (struct sr_data *)&dev->data;
+ struct sockaddr *addr = p;
+
+ if (netif_running(net))
+ return -EBUSY;
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ eth_hw_addr_set(net, addr->sa_data);
+
+ /* We use the 20 byte dev->data
+ * for our 6 byte mac buffer
+ * to avoid allocating memory that
+ * is tricky to free later
+ */
+ memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
+ sr_write_cmd_async(dev, SR_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
+ data->mac_addr);
+
+ return 0;
+}
+
+static const struct ethtool_ops sr9800_ethtool_ops = {
+ .get_drvinfo = sr_get_drvinfo,
+ .get_link = sr_get_link,
+ .get_msglevel = usbnet_get_msglevel,
+ .set_msglevel = usbnet_set_msglevel,
+ .get_wol = sr_get_wol,
+ .set_wol = sr_set_wol,
+ .get_eeprom_len = sr_get_eeprom_len,
+ .get_eeprom = sr_get_eeprom,
+ .nway_reset = usbnet_nway_reset,
+ .get_link_ksettings = usbnet_get_link_ksettings_mii,
+ .set_link_ksettings = usbnet_set_link_ksettings_mii,
+};
+
+static int sr9800_link_reset(struct usbnet *dev)
+{
+ struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
+ u16 mode;
+
+ mii_check_media(&dev->mii, 1, 1);
+ mii_ethtool_gset(&dev->mii, &ecmd);
+ mode = SR9800_MEDIUM_DEFAULT;
+
+ if (ethtool_cmd_speed(&ecmd) != SPEED_100)
+ mode &= ~SR_MEDIUM_PS;
+
+ if (ecmd.duplex != DUPLEX_FULL)
+ mode &= ~SR_MEDIUM_FD;
+
+ netdev_dbg(dev->net, "%s : speed: %u duplex: %d mode: 0x%04x\n",
+ __func__, ethtool_cmd_speed(&ecmd), ecmd.duplex, mode);
+
+ sr_write_medium_mode(dev, mode);
+
+ return 0;
+}
+
+
+static int sr9800_set_default_mode(struct usbnet *dev)
+{
+ u16 rx_ctl;
+ int ret;
+
+ sr_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
+ sr_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
+ ADVERTISE_ALL | ADVERTISE_CSMA);
+ mii_nway_restart(&dev->mii);
+
+ ret = sr_write_medium_mode(dev, SR9800_MEDIUM_DEFAULT);
+ if (ret < 0)
+ goto out;
+
+ ret = sr_write_cmd(dev, SR_CMD_WRITE_IPG012,
+ SR9800_IPG0_DEFAULT | SR9800_IPG1_DEFAULT,
+ SR9800_IPG2_DEFAULT, 0, NULL);
+ if (ret < 0) {
+ netdev_dbg(dev->net, "Write IPG,IPG1,IPG2 failed: %d\n", ret);
+ goto out;
+ }
+
+ /* Set RX_CTL to default values with 2k buffer, and enable cactus */
+ ret = sr_write_rx_ctl(dev, SR_DEFAULT_RX_CTL);
+ if (ret < 0)
+ goto out;
+
+ rx_ctl = sr_read_rx_ctl(dev);
+ netdev_dbg(dev->net, "RX_CTL is 0x%04x after all initializations\n",
+ rx_ctl);
+
+ rx_ctl = sr_read_medium_status(dev);
+ netdev_dbg(dev->net, "Medium Status:0x%04x after all initializations\n",
+ rx_ctl);
+
+ return 0;
+out:
+ return ret;
+}
+
+static int sr9800_reset(struct usbnet *dev)
+{
+ struct sr_data *data = (struct sr_data *)&dev->data;
+ int ret, embd_phy;
+ u16 rx_ctl;
+
+ ret = sr_write_gpio(dev,
+ SR_GPIO_RSE | SR_GPIO_GPO_2 | SR_GPIO_GPO2EN, 5);
+ if (ret < 0)
+ goto out;
+
+ embd_phy = ((sr_get_phy_addr(dev) & 0x1f) == 0x10 ? 1 : 0);
+
+ ret = sr_write_cmd(dev, SR_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL);
+ if (ret < 0) {
+ netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret);
+ goto out;
+ }
+
+ ret = sr_sw_reset(dev, SR_SWRESET_IPPD | SR_SWRESET_PRL);
+ if (ret < 0)
+ goto out;
+
+ msleep(150);
+
+ ret = sr_sw_reset(dev, SR_SWRESET_CLEAR);
+ if (ret < 0)
+ goto out;
+
+ msleep(150);
+
+ if (embd_phy) {
+ ret = sr_sw_reset(dev, SR_SWRESET_IPRL);
+ if (ret < 0)
+ goto out;
+ } else {
+ ret = sr_sw_reset(dev, SR_SWRESET_PRTE);
+ if (ret < 0)
+ goto out;
+ }
+
+ msleep(150);
+ rx_ctl = sr_read_rx_ctl(dev);
+ netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);
+ ret = sr_write_rx_ctl(dev, 0x0000);
+ if (ret < 0)
+ goto out;
+
+ rx_ctl = sr_read_rx_ctl(dev);
+ netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
+
+ ret = sr_sw_reset(dev, SR_SWRESET_PRL);
+ if (ret < 0)
+ goto out;
+
+ msleep(150);
+
+ ret = sr_sw_reset(dev, SR_SWRESET_IPRL | SR_SWRESET_PRL);
+ if (ret < 0)
+ goto out;
+
+ msleep(150);
+
+ ret = sr9800_set_default_mode(dev);
+ if (ret < 0)
+ goto out;
+
+ /* Rewrite MAC address */
+ memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
+ ret = sr_write_cmd(dev, SR_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
+ data->mac_addr);
+ if (ret < 0)
+ goto out;
+
+ return 0;
+
+out:
+ return ret;
+}
+
+static const struct net_device_ops sr9800_netdev_ops = {
+ .ndo_open = usbnet_open,
+ .ndo_stop = usbnet_stop,
+ .ndo_start_xmit = usbnet_start_xmit,
+ .ndo_tx_timeout = usbnet_tx_timeout,
+ .ndo_change_mtu = usbnet_change_mtu,
+ .ndo_get_stats64 = dev_get_tstats64,
+ .ndo_set_mac_address = sr_set_mac_address,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_eth_ioctl = sr_ioctl,
+ .ndo_set_rx_mode = sr_set_multicast,
+};
+
+static int sr9800_phy_powerup(struct usbnet *dev)
+{
+ int ret;
+
+ /* set the embedded Ethernet PHY in power-down state */
+ ret = sr_sw_reset(dev, SR_SWRESET_IPPD | SR_SWRESET_IPRL);
+ if (ret < 0) {
+ netdev_err(dev->net, "Failed to power down PHY : %d\n", ret);
+ return ret;
+ }
+ msleep(20);
+
+ /* set the embedded Ethernet PHY in power-up state */
+ ret = sr_sw_reset(dev, SR_SWRESET_IPRL);
+ if (ret < 0) {
+ netdev_err(dev->net, "Failed to reset PHY: %d\n", ret);
+ return ret;
+ }
+ msleep(600);
+
+ /* set the embedded Ethernet PHY in reset state */
+ ret = sr_sw_reset(dev, SR_SWRESET_CLEAR);
+ if (ret < 0) {
+ netdev_err(dev->net, "Failed to power up PHY: %d\n", ret);
+ return ret;
+ }
+ msleep(20);
+
+ /* set the embedded Ethernet PHY in power-up state */
+ ret = sr_sw_reset(dev, SR_SWRESET_IPRL);
+ if (ret < 0) {
+ netdev_err(dev->net, "Failed to reset PHY: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int sr9800_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+ struct sr_data *data = (struct sr_data *)&dev->data;
+ u16 led01_mux, led23_mux;
+ int ret, embd_phy;
+ u8 addr[ETH_ALEN];
+ u32 phyid;
+ u16 rx_ctl;
+
+ data->eeprom_len = SR9800_EEPROM_LEN;
+
+ usbnet_get_endpoints(dev, intf);
+
+ /* LED Setting Rule :
+ * AABB:CCDD
+ * AA : MFA0(LED0)
+ * BB : MFA1(LED1)
+ * CC : MFA2(LED2), Reserved for SR9800
+ * DD : MFA3(LED3), Reserved for SR9800
+ */
+ led01_mux = (SR_LED_MUX_LINK_ACTIVE << 8) | SR_LED_MUX_LINK;
+ led23_mux = (SR_LED_MUX_LINK_ACTIVE << 8) | SR_LED_MUX_TX_ACTIVE;
+ ret = sr_write_cmd(dev, SR_CMD_LED_MUX, led01_mux, led23_mux, 0, NULL);
+ if (ret < 0) {
+ netdev_err(dev->net, "set LINK LED failed : %d\n", ret);
+ goto out;
+ }
+
+ /* Get the MAC address */
+ ret = sr_read_cmd(dev, SR_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, addr);
+ if (ret < 0) {
+ netdev_dbg(dev->net, "Failed to read MAC address: %d\n", ret);
+ return ret;
+ }
+ eth_hw_addr_set(dev->net, addr);
+ netdev_dbg(dev->net, "mac addr : %pM\n", dev->net->dev_addr);
+
+ /* Initialize MII structure */
+ dev->mii.dev = dev->net;
+ dev->mii.mdio_read = sr_mdio_read;
+ dev->mii.mdio_write = sr_mdio_write;
+ dev->mii.phy_id_mask = 0x1f;
+ dev->mii.reg_num_mask = 0x1f;
+ dev->mii.phy_id = sr_get_phy_addr(dev);
+
+ dev->net->netdev_ops = &sr9800_netdev_ops;
+ dev->net->ethtool_ops = &sr9800_ethtool_ops;
+
+ embd_phy = ((dev->mii.phy_id & 0x1f) == 0x10 ? 1 : 0);
+ /* Reset the PHY to normal operation mode */
+ ret = sr_write_cmd(dev, SR_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL);
+ if (ret < 0) {
+ netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret);
+ return ret;
+ }
+
+ /* Init PHY routine */
+ ret = sr9800_phy_powerup(dev);
+ if (ret < 0)
+ goto out;
+
+ rx_ctl = sr_read_rx_ctl(dev);
+ netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);
+ ret = sr_write_rx_ctl(dev, 0x0000);
+ if (ret < 0)
+ goto out;
+
+ rx_ctl = sr_read_rx_ctl(dev);
+ netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
+
+ /* Read PHYID register *AFTER* the PHY was reset properly */
+ phyid = sr_get_phyid(dev);
+ netdev_dbg(dev->net, "PHYID=0x%08x\n", phyid);
+
+ /* medium mode setting */
+ ret = sr9800_set_default_mode(dev);
+ if (ret < 0)
+ goto out;
+
+ if (dev->udev->speed == USB_SPEED_HIGH) {
+ ret = sr_write_cmd(dev, SR_CMD_BULKIN_SIZE,
+ SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].byte_cnt,
+ SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].threshold,
+ 0, NULL);
+ if (ret < 0) {
+ netdev_err(dev->net, "Reset RX_CTL failed: %d\n", ret);
+ goto out;
+ }
+ dev->rx_urb_size =
+ SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].size;
+ } else {
+ ret = sr_write_cmd(dev, SR_CMD_BULKIN_SIZE,
+ SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].byte_cnt,
+ SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].threshold,
+ 0, NULL);
+ if (ret < 0) {
+ netdev_err(dev->net, "Reset RX_CTL failed: %d\n", ret);
+ goto out;
+ }
+ dev->rx_urb_size =
+ SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].size;
+ }
+ netdev_dbg(dev->net, "%s : setting rx_urb_size with : %zu\n", __func__,
+ dev->rx_urb_size);
+ return 0;
+
+out:
+ return ret;
+}
+
+static const struct driver_info sr9800_driver_info = {
+ .description = "CoreChip SR9800 USB 2.0 Ethernet",
+ .bind = sr9800_bind,
+ .status = sr_status,
+ .link_reset = sr9800_link_reset,
+ .reset = sr9800_reset,
+ .flags = DRIVER_FLAG,
+ .rx_fixup = sr_rx_fixup,
+ .tx_fixup = sr_tx_fixup,
+};
+
+static const struct usb_device_id products[] = {
+ {
+ USB_DEVICE(0x0fe6, 0x9800), /* SR9800 Device */
+ .driver_info = (unsigned long) &sr9800_driver_info,
+ },
+ {}, /* END */
+};
+
+MODULE_DEVICE_TABLE(usb, products);
+
+static struct usb_driver sr_driver = {
+ .name = DRIVER_NAME,
+ .id_table = products,
+ .probe = usbnet_probe,
+ .suspend = usbnet_suspend,
+ .resume = usbnet_resume,
+ .disconnect = usbnet_disconnect,
+ .supports_autosuspend = 1,
+};
+
+module_usb_driver(sr_driver);
+
+MODULE_AUTHOR("Liu Junliang <liujunliang_ljl@163.com");
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_DESCRIPTION("SR9800 USB 2.0 USB2NET Dev : http://www.corechip-sz.com");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 17:13:46 +0000