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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [net/] [usb/] [rtl8150.c] - Blame information for rev 62

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/*
 *  Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 */
 
#include <linux/init.h>
#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 <asm/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
 
/* 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 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_stats stats;
        struct net_device *netdev;
        struct urb *rx_urb, *tx_urb, *intr_urb, *ctrl_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;
        __le16 rx_creg;
        u8 *intr_buff;
        u8 phy;
};
 
typedef struct rtl8150 rtl8150_t;
 
static void fill_skb_pool(rtl8150_t *);
static void free_skb_pool(rtl8150_t *);
static inline struct sk_buff *pull_skb(rtl8150_t *);
static void rtl8150_disconnect(struct usb_interface *intf);
static int rtl8150_probe(struct usb_interface *intf,
                           const struct usb_device_id *id);
static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message);
static int rtl8150_resume(struct usb_interface *intf);
 
static const char driver_name [] = "rtl8150";
 
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
};
 
/*
**
**      device related part of the code
**
*/
static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
{
        return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
                               RTL8150_REQ_GET_REGS, RTL8150_REQT_READ,
                               indx, 0, data, size, 500);
}
 
static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
{
        return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
                               RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE,
                               indx, 0, data, size, 500);
}
 
static void ctrl_callback(struct urb *urb)
{
        rtl8150_t *dev;
 
        switch (urb->status) {
        case 0:
                break;
        case -EINPROGRESS:
                break;
        case -ENOENT:
                break;
        default:
                warn("ctrl urb status %d", urb->status);
        }
        dev = urb->context;
        clear_bit(RX_REG_SET, &dev->flags);
}
 
static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size)
{
        int ret;
 
        if (test_bit(RX_REG_SET, &dev->flags))
                return -EAGAIN;
 
        dev->dr.bRequestType = RTL8150_REQT_WRITE;
        dev->dr.bRequest = RTL8150_REQ_SET_REGS;
        dev->dr.wValue = cpu_to_le16(indx);
        dev->dr.wIndex = 0;
        dev->dr.wLength = cpu_to_le16(size);
        dev->ctrl_urb->transfer_buffer_length = size;
        usb_fill_control_urb(dev->ctrl_urb, dev->udev,
                         usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr,
                         &dev->rx_creg, size, ctrl_callback, dev);
        if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC))) {
                if (ret == -ENODEV)
                        netif_device_detach(dev->netdev);
                err("control request submission failed: %d", ret);
        } else
                set_bit(RX_REG_SET, &dev->flags);
 
        return ret;
}
 
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 inline void set_ethernet_addr(rtl8150_t * dev)
{
        u8 node_id[6];
 
        get_registers(dev, IDR, sizeof(node_id), node_id);
        memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id));
}
 
static int rtl8150_set_mac_address(struct net_device *netdev, void *p)
{
        struct sockaddr *addr = p;
        rtl8150_t *dev = netdev_priv(netdev);
        int i;
 
        if (netif_running(netdev))
                return -EBUSY;
 
        memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
        dbg("%s: Setting MAC address to ", netdev->name);
        for (i = 0; i < 5; i++)
                dbg("%02X:", netdev->dev_addr[i]);
        dbg("%02X\n", netdev->dev_addr[i]);
        /* Set the IDR registers. */
        set_registers(dev, IDR, sizeof(netdev->dev_addr), netdev->dev_addr);
#ifdef EEPROM_WRITE
        {
        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;
        }
        dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
        if (!dev->intr_urb) {
                usb_free_urb(dev->rx_urb);
                usb_free_urb(dev->tx_urb);
                usb_free_urb(dev->intr_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);
        usb_free_urb(dev->ctrl_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);
        usb_kill_urb(dev->ctrl_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;
        u16 rx_stat;
        int status;
 
        dev = urb->context;
        if (!dev)
                return;
        if (test_bit(RTL8150_UNPLUG, &dev->flags))
                return;
        netdev = dev->netdev;
        if (!netif_device_present(netdev))
                return;
 
        switch (urb->status) {
        case 0:
                break;
        case -ENOENT:
                return; /* the urb is in unlink state */
        case -ETIME:
                warn("may be reset is needed?..");
                goto goon;
        default:
                warn("Rx status %d", urb->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;
        rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4));
        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);
        dev->stats.rx_packets++;
        dev->stats.rx_bytes += pkt_len;
 
        spin_lock(&dev->rx_pool_lock);
        skb = pull_skb(dev);
        spin_unlock(&dev->rx_pool_lock);
        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);
        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 resched;
        } else {
                clear_bit(RX_URB_FAIL, &dev->flags);
        }
 
        return;
resched:
        tasklet_schedule(&dev->tl);
}
 
static void rx_fixup(unsigned long data)
{
        rtl8150_t *dev;
        struct sk_buff *skb;
        int status;
 
        dev = (rtl8150_t *)data;
 
        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 void write_bulk_callback(struct urb *urb)
{
        rtl8150_t *dev;
 
        dev = urb->context;
        if (!dev)
                return;
        dev_kfree_skb_irq(dev->tx_skb);
        if (!netif_device_present(dev->netdev))
                return;
        if (urb->status)
                info("%s: Tx status %d", dev->netdev->name, urb->status);
        dev->netdev->trans_start = jiffies;
        netif_wake_queue(dev->netdev);
}
 
static void intr_callback(struct urb *urb)
{
        rtl8150_t *dev;
        __u8 *d;
        int status;
 
        dev = urb->context;
        if (!dev)
                return;
        switch (urb->status) {
        case 0:                  /* success */
                break;
        case -ECONNRESET:       /* unlink */
        case -ENOENT:
        case -ESHUTDOWN:
                return;
        /* -EPIPE:  should clear the halt */
        default:
                info("%s: intr status %d", dev->netdev->name, urb->status);
                goto resubmit;
        }
 
        d = urb->transfer_buffer;
        if (d[0] & TSR_ERRORS) {
                dev->stats.tx_errors++;
                if (d[INT_TSR] & (TSR_ECOL | TSR_JBR))
                        dev->stats.tx_aborted_errors++;
                if (d[INT_TSR] & TSR_LCOL)
                        dev->stats.tx_window_errors++;
                if (d[INT_TSR] & TSR_LOSS_CRS)
                        dev->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);
                        dbg("%s: LINK LOST\n", __func__);
                }
        } else {
                if (!netif_carrier_ok(dev->netdev)) {
                        netif_carrier_on(dev->netdev);
                        dbg("%s: LINK CAME BACK\n", __func__);
                }
        }
 
resubmit:
        status = usb_submit_urb (urb, GFP_ATOMIC);
        if (status == -ENODEV)
                netif_device_detach(dev->netdev);
        else if (status)
                err ("can't resubmit intr, %s-%s/input0, status %d",
                                dev->udev->bus->bus_name,
                                dev->udev->devpath, status);
}
 
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++)
                if (dev->rx_skb_pool[i])
                        dev_kfree_skb(dev->rx_skb_pool[i]);
}
 
static int enable_net_traffic(rtl8150_t * dev)
{
        u8 cr, tcr, rcr, msr;
 
        if (!rtl8150_reset(dev)) {
                warn("%s - device reset failed", __FUNCTION__);
        }
        /* RCR bit7=1 attach Rx info at the end;  =0 HW CRC (which is broken) */
        rcr = 0x9e;
        dev->rx_creg = cpu_to_le16(rcr);
        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 struct net_device_stats *rtl8150_netdev_stats(struct net_device *dev)
{
        return &((rtl8150_t *)netdev_priv(dev))->stats;
}
 
static void rtl8150_tx_timeout(struct net_device *netdev)
{
        rtl8150_t *dev = netdev_priv(netdev);
        warn("%s: Tx timeout.", netdev->name);
        usb_unlink_urb(dev->tx_urb);
        dev->stats.tx_errors++;
}
 
static void rtl8150_set_multicast(struct net_device *netdev)
{
        rtl8150_t *dev = netdev_priv(netdev);
        netif_stop_queue(netdev);
        if (netdev->flags & IFF_PROMISC) {
                dev->rx_creg |= cpu_to_le16(0x0001);
                info("%s: promiscuous mode", netdev->name);
        } else if (netdev->mc_count ||
                   (netdev->flags & IFF_ALLMULTI)) {
                dev->rx_creg &= cpu_to_le16(0xfffe);
                dev->rx_creg |= cpu_to_le16(0x0002);
                info("%s: allmulti set", netdev->name);
        } else {
                /* ~RX_MULTICAST, ~RX_PROMISCUOUS */
                dev->rx_creg &= cpu_to_le16(0x00fc);
        }
        async_set_registers(dev, RCR, 2);
        netif_wake_queue(netdev);
}
 
static int 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 {
                        warn("failed tx_urb %d\n", res);
                        dev->stats.tx_errors++;
                        netif_start_queue(netdev);
                }
        } else {
                dev->stats.tx_packets++;
                dev->stats.tx_bytes += skb->len;
                netdev->trans_start = jiffies;
        }
 
        return 0;
}
 
 
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);
                warn("%s: rx_urb submit failed: %d", __FUNCTION__, 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);
                warn("%s: intr_urb submit failed: %d", __FUNCTION__, 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);
        int res = 0;
 
        netif_stop_queue(netdev);
        if (!test_bit(RTL8150_UNPLUG, &dev->flags))
                disable_net_traffic(dev);
        unlink_all_urbs(dev);
 
        return res;
}
 
static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
{
        rtl8150_t *dev = netdev_priv(netdev);
 
        strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
        strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
        usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info);
}
 
static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
{
        rtl8150_t *dev = netdev_priv(netdev);
        short lpa, bmcr;
 
        ecmd->supported = (SUPPORTED_10baseT_Half |
                          SUPPORTED_10baseT_Full |
                          SUPPORTED_100baseT_Half |
                          SUPPORTED_100baseT_Full |
                          SUPPORTED_Autoneg |
                          SUPPORTED_TP | SUPPORTED_MII);
        ecmd->port = PORT_TP;
        ecmd->transceiver = XCVR_INTERNAL;
        ecmd->phy_address = dev->phy;
        get_registers(dev, BMCR, 2, &bmcr);
        get_registers(dev, ANLP, 2, &lpa);
        if (bmcr & BMCR_ANENABLE) {
                ecmd->autoneg = AUTONEG_ENABLE;
                ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ?
                             SPEED_100 : SPEED_10;
                if (ecmd->speed == SPEED_100)
                        ecmd->duplex = (lpa & LPA_100FULL) ?
                            DUPLEX_FULL : DUPLEX_HALF;
                else
                        ecmd->duplex = (lpa & LPA_10FULL) ?
                            DUPLEX_FULL : DUPLEX_HALF;
        } else {
                ecmd->autoneg = AUTONEG_DISABLE;
                ecmd->speed = (bmcr & BMCR_SPEED100) ?
                    SPEED_100 : SPEED_10;
                ecmd->duplex = (bmcr & BMCR_FULLDPLX) ?
                    DUPLEX_FULL : DUPLEX_HALF;
        }
        return 0;
}
 
static struct ethtool_ops ops = {
        .get_drvinfo = rtl8150_get_drvinfo,
        .get_settings = rtl8150_get_settings,
        .get_link = ethtool_op_get_link
};
 
static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, 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;
        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 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) {
                err("Out of memory");
                return -ENOMEM;
        }
 
        dev = netdev_priv(netdev);
 
        dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL);
        if (!dev->intr_buff) {
                free_netdev(netdev);
                return -ENOMEM;
        }
 
        tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev);
        spin_lock_init(&dev->rx_pool_lock);
 
        dev->udev = udev;
        dev->netdev = netdev;
        netdev->open = rtl8150_open;
        netdev->stop = rtl8150_close;
        netdev->do_ioctl = rtl8150_ioctl;
        netdev->watchdog_timeo = RTL8150_TX_TIMEOUT;
        netdev->tx_timeout = rtl8150_tx_timeout;
        netdev->hard_start_xmit = rtl8150_start_xmit;
        netdev->set_multicast_list = rtl8150_set_multicast;
        netdev->set_mac_address = rtl8150_set_mac_address;
        netdev->get_stats = rtl8150_netdev_stats;
        netdev->mtu = RTL8150_MTU;
        SET_ETHTOOL_OPS(netdev, &ops);
        dev->intr_interval = 100;       /* 100ms */
 
        if (!alloc_all_urbs(dev)) {
                err("out of memory");
                goto out;
        }
        if (!rtl8150_reset(dev)) {
                err("couldn't reset the device");
                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) {
                err("couldn't register the device");
                goto out2;
        }
 
        info("%s: rtl8150 is detected", 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_disable(&dev->tl);
                tasklet_kill(&dev->tl);
                unregister_netdev(dev->netdev);
                unlink_all_urbs(dev);
                free_all_urbs(dev);
                free_skb_pool(dev);
                if (dev->rx_skb)
                        dev_kfree_skb(dev->rx_skb);
                kfree(dev->intr_buff);
                free_netdev(dev->netdev);
        }
}
 
static int __init usb_rtl8150_init(void)
{
        info(DRIVER_DESC " " DRIVER_VERSION);
        return usb_register(&rtl8150_driver);
}
 
static void __exit usb_rtl8150_exit(void)
{
        usb_deregister(&rtl8150_driver);
}
 
module_init(usb_rtl8150_init);
module_exit(usb_rtl8150_exit);
 
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [net/] [usb/] [rtl8150.c] - Blame information for rev 62

Line No.	Rev	Author	Line
1	62	marcus.erl	`/*`
2			`* Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net)`
3			`*`
4			`* This program is free software; you can redistribute it and/or`
5			`* modify it under the terms of the GNU General Public License`
6			`* version 2 as published by the Free Software Foundation.`
7			`*/`
8
9			`#include <linux/init.h>`
10			`#include <linux/signal.h>`
11			`#include <linux/slab.h>`
12			`#include <linux/module.h>`
13			`#include <linux/netdevice.h>`
14			`#include <linux/etherdevice.h>`
15			`#include <linux/mii.h>`
16			`#include <linux/ethtool.h>`
17			`#include <linux/usb.h>`
18			`#include <asm/uaccess.h>`
19
20			`/* Version Information */`
21			`#define DRIVER_VERSION "v0.6.2 (2004/08/27)"`
22			`#define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"`
23			`#define DRIVER_DESC "rtl8150 based usb-ethernet driver"`
24
25			`#define IDR 0x0120`
26			`#define MAR 0x0126`
27			`#define CR 0x012e`
28			`#define TCR 0x012f`
29			`#define RCR 0x0130`
30			`#define TSR 0x0132`
31			`#define RSR 0x0133`
32			`#define CON0 0x0135`
33			`#define CON1 0x0136`
34			`#define MSR 0x0137`
35			`#define PHYADD 0x0138`
36			`#define PHYDAT 0x0139`
37			`#define PHYCNT 0x013b`
38			`#define GPPC 0x013d`
39			`#define BMCR 0x0140`
40			`#define BMSR 0x0142`