diff options
Diffstat (limited to 'drivers/net/usb/rtl8150.c')
| -rw-r--r-- | drivers/net/usb/rtl8150.c | 957 |
1 files changed, 957 insertions, 0 deletions
diff --git a/drivers/net/usb/rtl8150.c b/drivers/net/usb/rtl8150.c new file mode 100644 index 000000000..97afd7335 --- /dev/null +++ b/drivers/net/usb/rtl8150.c @@ -0,0 +1,957 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net) + */ + +#include <linux/signal.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/usb.h> +#include <linux/uaccess.h> + +/* Version Information */ +#define DRIVER_VERSION "v0.6.2 (2004/08/27)" +#define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>" +#define DRIVER_DESC "rtl8150 based usb-ethernet driver" + +#define IDR 0x0120 +#define MAR 0x0126 +#define CR 0x012e +#define TCR 0x012f +#define RCR 0x0130 +#define TSR 0x0132 +#define RSR 0x0133 +#define CON0 0x0135 +#define CON1 0x0136 +#define MSR 0x0137 +#define PHYADD 0x0138 +#define PHYDAT 0x0139 +#define PHYCNT 0x013b +#define GPPC 0x013d +#define BMCR 0x0140 +#define BMSR 0x0142 +#define ANAR 0x0144 +#define ANLP 0x0146 +#define AER 0x0148 +#define CSCR 0x014C /* This one has the link status */ +#define CSCR_LINK_STATUS (1 << 3) + +#define IDR_EEPROM 0x1202 + +#define PHY_READ 0 +#define PHY_WRITE 0x20 +#define PHY_GO 0x40 + +#define MII_TIMEOUT 10 +#define INTBUFSIZE 8 + +#define RTL8150_REQT_READ 0xc0 +#define RTL8150_REQT_WRITE 0x40 +#define RTL8150_REQ_GET_REGS 0x05 +#define RTL8150_REQ_SET_REGS 0x05 + + +/* Transmit status register errors */ +#define TSR_ECOL (1<<5) +#define TSR_LCOL (1<<4) +#define TSR_LOSS_CRS (1<<3) +#define TSR_JBR (1<<2) +#define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR) +/* Receive status register errors */ +#define RSR_CRC (1<<2) +#define RSR_FAE (1<<1) +#define RSR_ERRORS (RSR_CRC | RSR_FAE) + +/* Media status register definitions */ +#define MSR_DUPLEX (1<<4) +#define MSR_SPEED (1<<3) +#define MSR_LINK (1<<2) + +/* Interrupt pipe data */ +#define INT_TSR 0x00 +#define INT_RSR 0x01 +#define INT_MSR 0x02 +#define INT_WAKSR 0x03 +#define INT_TXOK_CNT 0x04 +#define INT_RXLOST_CNT 0x05 +#define INT_CRERR_CNT 0x06 +#define INT_COL_CNT 0x07 + + +#define RTL8150_MTU 1540 +#define RTL8150_TX_TIMEOUT (HZ) +#define RX_SKB_POOL_SIZE 4 + +/* rtl8150 flags */ +#define RTL8150_HW_CRC 0 +#define RX_REG_SET 1 +#define RTL8150_UNPLUG 2 +#define RX_URB_FAIL 3 + +/* Define these values to match your device */ +#define VENDOR_ID_REALTEK 0x0bda +#define VENDOR_ID_MELCO 0x0411 +#define VENDOR_ID_MICRONET 0x3980 +#define VENDOR_ID_LONGSHINE 0x07b8 +#define VENDOR_ID_OQO 0x1557 +#define VENDOR_ID_ZYXEL 0x0586 + +#define PRODUCT_ID_RTL8150 0x8150 +#define PRODUCT_ID_LUAKTX 0x0012 +#define PRODUCT_ID_LCS8138TX 0x401a +#define PRODUCT_ID_SP128AR 0x0003 +#define PRODUCT_ID_PRESTIGE 0x401a + +#undef EEPROM_WRITE + +/* table of devices that work with this driver */ +static const struct usb_device_id rtl8150_table[] = { + {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)}, + {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)}, + {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)}, + {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)}, + {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)}, + {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)}, + {} +}; + +MODULE_DEVICE_TABLE(usb, rtl8150_table); + +struct rtl8150 { + unsigned long flags; + struct usb_device *udev; + struct tasklet_struct tl; + struct net_device *netdev; + struct urb *rx_urb, *tx_urb, *intr_urb; + struct sk_buff *tx_skb, *rx_skb; + struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE]; + spinlock_t rx_pool_lock; + struct usb_ctrlrequest dr; + int intr_interval; + u8 *intr_buff; + u8 phy; +}; + +typedef struct rtl8150 rtl8150_t; + +struct async_req { + struct usb_ctrlrequest dr; + u16 rx_creg; +}; + +static const char driver_name [] = "rtl8150"; + +/* +** +** device related part of the code +** +*/ +static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) +{ + return usb_control_msg_recv(dev->udev, 0, RTL8150_REQ_GET_REGS, + RTL8150_REQT_READ, indx, 0, data, size, + 1000, GFP_NOIO); +} + +static int set_registers(rtl8150_t * dev, u16 indx, u16 size, const void *data) +{ + return usb_control_msg_send(dev->udev, 0, RTL8150_REQ_SET_REGS, + RTL8150_REQT_WRITE, indx, 0, data, size, + 1000, GFP_NOIO); +} + +static void async_set_reg_cb(struct urb *urb) +{ + struct async_req *req = (struct async_req *)urb->context; + int status = urb->status; + + if (status < 0) + dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status); + kfree(req); + usb_free_urb(urb); +} + +static int async_set_registers(rtl8150_t *dev, u16 indx, u16 size, u16 reg) +{ + int res = -ENOMEM; + struct urb *async_urb; + struct async_req *req; + + req = kmalloc(sizeof(struct async_req), GFP_ATOMIC); + if (req == NULL) + return res; + async_urb = usb_alloc_urb(0, GFP_ATOMIC); + if (async_urb == NULL) { + kfree(req); + return res; + } + req->rx_creg = cpu_to_le16(reg); + req->dr.bRequestType = RTL8150_REQT_WRITE; + req->dr.bRequest = RTL8150_REQ_SET_REGS; + req->dr.wIndex = 0; + req->dr.wValue = cpu_to_le16(indx); + req->dr.wLength = cpu_to_le16(size); + usb_fill_control_urb(async_urb, dev->udev, + usb_sndctrlpipe(dev->udev, 0), (void *)&req->dr, + &req->rx_creg, size, async_set_reg_cb, req); + res = usb_submit_urb(async_urb, GFP_ATOMIC); + if (res) { + if (res == -ENODEV) + netif_device_detach(dev->netdev); + dev_err(&dev->udev->dev, "%s failed with %d\n", __func__, res); + } + return res; +} + +static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg) +{ + int i; + u8 data[3], tmp; + + data[0] = phy; + data[1] = data[2] = 0; + tmp = indx | PHY_READ | PHY_GO; + i = 0; + + set_registers(dev, PHYADD, sizeof(data), data); + set_registers(dev, PHYCNT, 1, &tmp); + do { + get_registers(dev, PHYCNT, 1, data); + } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); + + if (i <= MII_TIMEOUT) { + get_registers(dev, PHYDAT, 2, data); + *reg = data[0] | (data[1] << 8); + return 0; + } else + return 1; +} + +static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg) +{ + int i; + u8 data[3], tmp; + + data[0] = phy; + data[1] = reg & 0xff; + data[2] = (reg >> 8) & 0xff; + tmp = indx | PHY_WRITE | PHY_GO; + i = 0; + + set_registers(dev, PHYADD, sizeof(data), data); + set_registers(dev, PHYCNT, 1, &tmp); + do { + get_registers(dev, PHYCNT, 1, data); + } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); + + if (i <= MII_TIMEOUT) + return 0; + else + return 1; +} + +static void set_ethernet_addr(rtl8150_t *dev) +{ + u8 node_id[ETH_ALEN]; + int ret; + + ret = get_registers(dev, IDR, sizeof(node_id), node_id); + + if (!ret) { + eth_hw_addr_set(dev->netdev, node_id); + } else { + eth_hw_addr_random(dev->netdev); + netdev_notice(dev->netdev, "Assigned a random MAC address: %pM\n", + dev->netdev->dev_addr); + } +} + +static int rtl8150_set_mac_address(struct net_device *netdev, void *p) +{ + struct sockaddr *addr = p; + rtl8150_t *dev = netdev_priv(netdev); + + if (netif_running(netdev)) + return -EBUSY; + + eth_hw_addr_set(netdev, addr->sa_data); + netdev_dbg(netdev, "Setting MAC address to %pM\n", netdev->dev_addr); + /* Set the IDR registers. */ + set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr); +#ifdef EEPROM_WRITE + { + int i; + u8 cr; + /* Get the CR contents. */ + get_registers(dev, CR, 1, &cr); + /* Set the WEPROM bit (eeprom write enable). */ + cr |= 0x20; + set_registers(dev, CR, 1, &cr); + /* Write the MAC address into eeprom. Eeprom writes must be word-sized, + so we need to split them up. */ + for (i = 0; i * 2 < netdev->addr_len; i++) { + set_registers(dev, IDR_EEPROM + (i * 2), 2, + netdev->dev_addr + (i * 2)); + } + /* Clear the WEPROM bit (preventing accidental eeprom writes). */ + cr &= 0xdf; + set_registers(dev, CR, 1, &cr); + } +#endif + return 0; +} + +static int rtl8150_reset(rtl8150_t * dev) +{ + u8 data = 0x10; + int i = HZ; + + set_registers(dev, CR, 1, &data); + do { + get_registers(dev, CR, 1, &data); + } while ((data & 0x10) && --i); + + return (i > 0) ? 1 : 0; +} + +static int alloc_all_urbs(rtl8150_t * dev) +{ + dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!dev->rx_urb) + return 0; + dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!dev->tx_urb) { + usb_free_urb(dev->rx_urb); + return 0; + } + dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!dev->intr_urb) { + usb_free_urb(dev->rx_urb); + usb_free_urb(dev->tx_urb); + return 0; + } + + return 1; +} + +static void free_all_urbs(rtl8150_t * dev) +{ + usb_free_urb(dev->rx_urb); + usb_free_urb(dev->tx_urb); + usb_free_urb(dev->intr_urb); +} + +static void unlink_all_urbs(rtl8150_t * dev) +{ + usb_kill_urb(dev->rx_urb); + usb_kill_urb(dev->tx_urb); + usb_kill_urb(dev->intr_urb); +} + +static inline struct sk_buff *pull_skb(rtl8150_t *dev) +{ + struct sk_buff *skb; + int i; + + for (i = 0; i < RX_SKB_POOL_SIZE; i++) { + if (dev->rx_skb_pool[i]) { + skb = dev->rx_skb_pool[i]; + dev->rx_skb_pool[i] = NULL; + return skb; + } + } + return NULL; +} + +static void read_bulk_callback(struct urb *urb) +{ + rtl8150_t *dev; + unsigned pkt_len, res; + struct sk_buff *skb; + struct net_device *netdev; + int status = urb->status; + int result; + unsigned long flags; + + dev = urb->context; + if (!dev) + return; + if (test_bit(RTL8150_UNPLUG, &dev->flags)) + return; + netdev = dev->netdev; + if (!netif_device_present(netdev)) + return; + + switch (status) { + case 0: + break; + case -ENOENT: + return; /* the urb is in unlink state */ + case -ETIME: + if (printk_ratelimit()) + dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); + goto goon; + default: + if (printk_ratelimit()) + dev_warn(&urb->dev->dev, "Rx status %d\n", status); + goto goon; + } + + if (!dev->rx_skb) + goto resched; + /* protect against short packets (tell me why we got some?!?) */ + if (urb->actual_length < 4) + goto goon; + + res = urb->actual_length; + pkt_len = res - 4; + + skb_put(dev->rx_skb, pkt_len); + dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); + netif_rx(dev->rx_skb); + netdev->stats.rx_packets++; + netdev->stats.rx_bytes += pkt_len; + + spin_lock_irqsave(&dev->rx_pool_lock, flags); + skb = pull_skb(dev); + spin_unlock_irqrestore(&dev->rx_pool_lock, flags); + if (!skb) + goto resched; + + dev->rx_skb = skb; +goon: + usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), + dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); + result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); + if (result == -ENODEV) + netif_device_detach(dev->netdev); + else if (result) { + set_bit(RX_URB_FAIL, &dev->flags); + goto resched; + } else { + clear_bit(RX_URB_FAIL, &dev->flags); + } + + return; +resched: + tasklet_schedule(&dev->tl); +} + +static void write_bulk_callback(struct urb *urb) +{ + rtl8150_t *dev; + int status = urb->status; + + dev = urb->context; + if (!dev) + return; + dev_kfree_skb_irq(dev->tx_skb); + if (!netif_device_present(dev->netdev)) + return; + if (status) + dev_info(&urb->dev->dev, "%s: Tx status %d\n", + dev->netdev->name, status); + netif_trans_update(dev->netdev); + netif_wake_queue(dev->netdev); +} + +static void intr_callback(struct urb *urb) +{ + rtl8150_t *dev; + __u8 *d; + int status = urb->status; + int res; + + dev = urb->context; + if (!dev) + return; + switch (status) { + case 0: /* success */ + break; + case -ECONNRESET: /* unlink */ + case -ENOENT: + case -ESHUTDOWN: + return; + /* -EPIPE: should clear the halt */ + default: + dev_info(&urb->dev->dev, "%s: intr status %d\n", + dev->netdev->name, status); + goto resubmit; + } + + d = urb->transfer_buffer; + if (d[0] & TSR_ERRORS) { + dev->netdev->stats.tx_errors++; + if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) + dev->netdev->stats.tx_aborted_errors++; + if (d[INT_TSR] & TSR_LCOL) + dev->netdev->stats.tx_window_errors++; + if (d[INT_TSR] & TSR_LOSS_CRS) + dev->netdev->stats.tx_carrier_errors++; + } + /* Report link status changes to the network stack */ + if ((d[INT_MSR] & MSR_LINK) == 0) { + if (netif_carrier_ok(dev->netdev)) { + netif_carrier_off(dev->netdev); + netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__); + } + } else { + if (!netif_carrier_ok(dev->netdev)) { + netif_carrier_on(dev->netdev); + netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__); + } + } + +resubmit: + res = usb_submit_urb (urb, GFP_ATOMIC); + if (res == -ENODEV) + netif_device_detach(dev->netdev); + else if (res) + dev_err(&dev->udev->dev, + "can't resubmit intr, %s-%s/input0, status %d\n", + dev->udev->bus->bus_name, dev->udev->devpath, res); +} + +static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) +{ + rtl8150_t *dev = usb_get_intfdata(intf); + + netif_device_detach(dev->netdev); + + if (netif_running(dev->netdev)) { + usb_kill_urb(dev->rx_urb); + usb_kill_urb(dev->intr_urb); + } + return 0; +} + +static int rtl8150_resume(struct usb_interface *intf) +{ + rtl8150_t *dev = usb_get_intfdata(intf); + + netif_device_attach(dev->netdev); + if (netif_running(dev->netdev)) { + dev->rx_urb->status = 0; + dev->rx_urb->actual_length = 0; + read_bulk_callback(dev->rx_urb); + + dev->intr_urb->status = 0; + dev->intr_urb->actual_length = 0; + intr_callback(dev->intr_urb); + } + return 0; +} + +/* +** +** network related part of the code +** +*/ + +static void fill_skb_pool(rtl8150_t *dev) +{ + struct sk_buff *skb; + int i; + + for (i = 0; i < RX_SKB_POOL_SIZE; i++) { + if (dev->rx_skb_pool[i]) + continue; + skb = dev_alloc_skb(RTL8150_MTU + 2); + if (!skb) { + return; + } + skb_reserve(skb, 2); + dev->rx_skb_pool[i] = skb; + } +} + +static void free_skb_pool(rtl8150_t *dev) +{ + int i; + + for (i = 0; i < RX_SKB_POOL_SIZE; i++) + dev_kfree_skb(dev->rx_skb_pool[i]); +} + +static void rx_fixup(struct tasklet_struct *t) +{ + struct rtl8150 *dev = from_tasklet(dev, t, tl); + struct sk_buff *skb; + int status; + + spin_lock_irq(&dev->rx_pool_lock); + fill_skb_pool(dev); + spin_unlock_irq(&dev->rx_pool_lock); + if (test_bit(RX_URB_FAIL, &dev->flags)) + if (dev->rx_skb) + goto try_again; + spin_lock_irq(&dev->rx_pool_lock); + skb = pull_skb(dev); + spin_unlock_irq(&dev->rx_pool_lock); + if (skb == NULL) + goto tlsched; + dev->rx_skb = skb; + usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), + dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); +try_again: + status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); + if (status == -ENODEV) { + netif_device_detach(dev->netdev); + } else if (status) { + set_bit(RX_URB_FAIL, &dev->flags); + goto tlsched; + } else { + clear_bit(RX_URB_FAIL, &dev->flags); + } + + return; +tlsched: + tasklet_schedule(&dev->tl); +} + +static int enable_net_traffic(rtl8150_t * dev) +{ + u8 cr, tcr, rcr, msr; + + if (!rtl8150_reset(dev)) { + dev_warn(&dev->udev->dev, "device reset failed\n"); + } + /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ + rcr = 0x9e; + tcr = 0xd8; + cr = 0x0c; + if (!(rcr & 0x80)) + set_bit(RTL8150_HW_CRC, &dev->flags); + set_registers(dev, RCR, 1, &rcr); + set_registers(dev, TCR, 1, &tcr); + set_registers(dev, CR, 1, &cr); + get_registers(dev, MSR, 1, &msr); + + return 0; +} + +static void disable_net_traffic(rtl8150_t * dev) +{ + u8 cr; + + get_registers(dev, CR, 1, &cr); + cr &= 0xf3; + set_registers(dev, CR, 1, &cr); +} + +static void rtl8150_tx_timeout(struct net_device *netdev, unsigned int txqueue) +{ + rtl8150_t *dev = netdev_priv(netdev); + dev_warn(&netdev->dev, "Tx timeout.\n"); + usb_unlink_urb(dev->tx_urb); + netdev->stats.tx_errors++; +} + +static void rtl8150_set_multicast(struct net_device *netdev) +{ + rtl8150_t *dev = netdev_priv(netdev); + u16 rx_creg = 0x9e; + + netif_stop_queue(netdev); + if (netdev->flags & IFF_PROMISC) { + rx_creg |= 0x0001; + dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); + } else if (!netdev_mc_empty(netdev) || + (netdev->flags & IFF_ALLMULTI)) { + rx_creg &= 0xfffe; + rx_creg |= 0x0002; + dev_dbg(&netdev->dev, "%s: allmulti set\n", netdev->name); + } else { + /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ + rx_creg &= 0x00fc; + } + async_set_registers(dev, RCR, sizeof(rx_creg), rx_creg); + netif_wake_queue(netdev); +} + +static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, + struct net_device *netdev) +{ + rtl8150_t *dev = netdev_priv(netdev); + int count, res; + + netif_stop_queue(netdev); + count = (skb->len < 60) ? 60 : skb->len; + count = (count & 0x3f) ? count : count + 1; + dev->tx_skb = skb; + usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), + skb->data, count, write_bulk_callback, dev); + if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { + /* Can we get/handle EPIPE here? */ + if (res == -ENODEV) + netif_device_detach(dev->netdev); + else { + dev_warn(&netdev->dev, "failed tx_urb %d\n", res); + netdev->stats.tx_errors++; + netif_start_queue(netdev); + } + } else { + netdev->stats.tx_packets++; + netdev->stats.tx_bytes += skb->len; + netif_trans_update(netdev); + } + + return NETDEV_TX_OK; +} + + +static void set_carrier(struct net_device *netdev) +{ + rtl8150_t *dev = netdev_priv(netdev); + short tmp; + + get_registers(dev, CSCR, 2, &tmp); + if (tmp & CSCR_LINK_STATUS) + netif_carrier_on(netdev); + else + netif_carrier_off(netdev); +} + +static int rtl8150_open(struct net_device *netdev) +{ + rtl8150_t *dev = netdev_priv(netdev); + int res; + + if (dev->rx_skb == NULL) + dev->rx_skb = pull_skb(dev); + if (!dev->rx_skb) + return -ENOMEM; + + set_registers(dev, IDR, 6, netdev->dev_addr); + + usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), + dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); + if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { + if (res == -ENODEV) + netif_device_detach(dev->netdev); + dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); + return res; + } + usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), + dev->intr_buff, INTBUFSIZE, intr_callback, + dev, dev->intr_interval); + if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { + if (res == -ENODEV) + netif_device_detach(dev->netdev); + dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); + usb_kill_urb(dev->rx_urb); + return res; + } + enable_net_traffic(dev); + set_carrier(netdev); + netif_start_queue(netdev); + + return res; +} + +static int rtl8150_close(struct net_device *netdev) +{ + rtl8150_t *dev = netdev_priv(netdev); + + netif_stop_queue(netdev); + if (!test_bit(RTL8150_UNPLUG, &dev->flags)) + disable_net_traffic(dev); + unlink_all_urbs(dev); + + return 0; +} + +static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) +{ + rtl8150_t *dev = netdev_priv(netdev); + + strscpy(info->driver, driver_name, sizeof(info->driver)); + strscpy(info->version, DRIVER_VERSION, sizeof(info->version)); + usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); +} + +static int rtl8150_get_link_ksettings(struct net_device *netdev, + struct ethtool_link_ksettings *ecmd) +{ + rtl8150_t *dev = netdev_priv(netdev); + short lpa, bmcr; + u32 supported; + + supported = (SUPPORTED_10baseT_Half | + SUPPORTED_10baseT_Full | + SUPPORTED_100baseT_Half | + SUPPORTED_100baseT_Full | + SUPPORTED_Autoneg | + SUPPORTED_TP | SUPPORTED_MII); + ecmd->base.port = PORT_TP; + ecmd->base.phy_address = dev->phy; + get_registers(dev, BMCR, 2, &bmcr); + get_registers(dev, ANLP, 2, &lpa); + if (bmcr & BMCR_ANENABLE) { + u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ? + SPEED_100 : SPEED_10); + ecmd->base.speed = speed; + ecmd->base.autoneg = AUTONEG_ENABLE; + if (speed == SPEED_100) + ecmd->base.duplex = (lpa & LPA_100FULL) ? + DUPLEX_FULL : DUPLEX_HALF; + else + ecmd->base.duplex = (lpa & LPA_10FULL) ? + DUPLEX_FULL : DUPLEX_HALF; + } else { + ecmd->base.autoneg = AUTONEG_DISABLE; + ecmd->base.speed = ((bmcr & BMCR_SPEED100) ? + SPEED_100 : SPEED_10); + ecmd->base.duplex = (bmcr & BMCR_FULLDPLX) ? + DUPLEX_FULL : DUPLEX_HALF; + } + + ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.supported, + supported); + + return 0; +} + +static const struct ethtool_ops ops = { + .get_drvinfo = rtl8150_get_drvinfo, + .get_link = ethtool_op_get_link, + .get_link_ksettings = rtl8150_get_link_ksettings, +}; + +static int rtl8150_siocdevprivate(struct net_device *netdev, struct ifreq *rq, + void __user *udata, int cmd) +{ + rtl8150_t *dev = netdev_priv(netdev); + u16 *data = (u16 *) & rq->ifr_ifru; + int res = 0; + + switch (cmd) { + case SIOCDEVPRIVATE: + data[0] = dev->phy; + fallthrough; + case SIOCDEVPRIVATE + 1: + read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); + break; + case SIOCDEVPRIVATE + 2: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); + break; + default: + res = -EOPNOTSUPP; + } + + return res; +} + +static const struct net_device_ops rtl8150_netdev_ops = { + .ndo_open = rtl8150_open, + .ndo_stop = rtl8150_close, + .ndo_siocdevprivate = rtl8150_siocdevprivate, + .ndo_start_xmit = rtl8150_start_xmit, + .ndo_tx_timeout = rtl8150_tx_timeout, + .ndo_set_rx_mode = rtl8150_set_multicast, + .ndo_set_mac_address = rtl8150_set_mac_address, + + .ndo_validate_addr = eth_validate_addr, +}; + +static int rtl8150_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_device *udev = interface_to_usbdev(intf); + rtl8150_t *dev; + struct net_device *netdev; + + netdev = alloc_etherdev(sizeof(rtl8150_t)); + if (!netdev) + return -ENOMEM; + + dev = netdev_priv(netdev); + + dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); + if (!dev->intr_buff) { + free_netdev(netdev); + return -ENOMEM; + } + + tasklet_setup(&dev->tl, rx_fixup); + spin_lock_init(&dev->rx_pool_lock); + + dev->udev = udev; + dev->netdev = netdev; + netdev->netdev_ops = &rtl8150_netdev_ops; + netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; + netdev->ethtool_ops = &ops; + dev->intr_interval = 100; /* 100ms */ + + if (!alloc_all_urbs(dev)) { + dev_err(&intf->dev, "out of memory\n"); + goto out; + } + if (!rtl8150_reset(dev)) { + dev_err(&intf->dev, "couldn't reset the device\n"); + goto out1; + } + fill_skb_pool(dev); + set_ethernet_addr(dev); + + usb_set_intfdata(intf, dev); + SET_NETDEV_DEV(netdev, &intf->dev); + if (register_netdev(netdev) != 0) { + dev_err(&intf->dev, "couldn't register the device\n"); + goto out2; + } + + dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); + + return 0; + +out2: + usb_set_intfdata(intf, NULL); + free_skb_pool(dev); +out1: + free_all_urbs(dev); +out: + kfree(dev->intr_buff); + free_netdev(netdev); + return -EIO; +} + +static void rtl8150_disconnect(struct usb_interface *intf) +{ + rtl8150_t *dev = usb_get_intfdata(intf); + + usb_set_intfdata(intf, NULL); + if (dev) { + set_bit(RTL8150_UNPLUG, &dev->flags); + tasklet_kill(&dev->tl); + unregister_netdev(dev->netdev); + unlink_all_urbs(dev); + free_all_urbs(dev); + free_skb_pool(dev); + dev_kfree_skb(dev->rx_skb); + kfree(dev->intr_buff); + free_netdev(dev->netdev); + } +} + +static struct usb_driver rtl8150_driver = { + .name = driver_name, + .probe = rtl8150_probe, + .disconnect = rtl8150_disconnect, + .id_table = rtl8150_table, + .suspend = rtl8150_suspend, + .resume = rtl8150_resume, + .disable_hub_initiated_lpm = 1, +}; + +module_usb_driver(rtl8150_driver); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); |