-#include <asm/uaccess.h>
-#include <asm/unaligned.h>
-#include <linux/usb.h>
-#include <asm/io.h>
-#include <asm/scatterlist.h>
-#include <linux/mm.h>
-#include <linux/dma-mapping.h>
-
-#define DRIVER_VERSION "25-Aug-2003"
-
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Nineteen USB 1.1 max size bulk transactions per frame (ms), max.
- * Several dozen bytes of IPv4 data can fit in two such transactions.
- * One maximum size Ethernet packet takes twenty four of them.
- * For high speed, each frame comfortably fits almost 36 max size
- * Ethernet packets (so queues should be bigger).
- */
-#define RX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
-#define TX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
-
-// packets are always ethernet inside
-// ... except they can be bigger (limit of 64K with NetChip framing)
-#define MIN_PACKET sizeof(struct ethhdr)
-#define MAX_PACKET 32768
-
-// reawaken network queue this soon after stopping; else watchdog barks
-#define TX_TIMEOUT_JIFFIES (5*HZ)
-
-// throttle rx/tx briefly after some faults, so khubd might disconnect()
-// us (it polls at HZ/4 usually) before we report too many false errors.
-#define THROTTLE_JIFFIES (HZ/8)
-
-// for vendor-specific control operations
-#define CONTROL_TIMEOUT_MS (500) /* msec */
-#define CONTROL_TIMEOUT_JIFFIES ((CONTROL_TIMEOUT_MS * HZ)/1000)
-
-// between wakeups
-#define UNLINK_TIMEOUT_JIFFIES ((3 /*ms*/ * HZ)/1000)
-
-/*-------------------------------------------------------------------------*/
-
-// randomly generated ethernet address
-static u8 node_id [ETH_ALEN];
-
-// state we keep for each device we handle
-struct usbnet {
- // housekeeping
- struct usb_device *udev;
- struct driver_info *driver_info;
- wait_queue_head_t *wait;
-
- // i/o info: pipes etc
- unsigned in, out;
- unsigned maxpacket;
- struct timer_list delay;
-
- // protocol/interface state
- struct net_device *net;
- struct net_device_stats stats;
- int msg_level;
- unsigned long data [5];
-
- struct mii_if_info mii;
-
- // various kinds of pending driver work
- struct sk_buff_head rxq;
- struct sk_buff_head txq;
- struct sk_buff_head done;
- struct tasklet_struct bh;
-
- struct work_struct kevent;
- unsigned long flags;
-# define EVENT_TX_HALT 0
-# define EVENT_RX_HALT 1
-# define EVENT_RX_MEMORY 2
-};
-
-// device-specific info used by the driver
-struct driver_info {
- char *description;
-
- int flags;
-/* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
-#define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */
-#define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */
-#define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */
-#define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */
-
-#define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
-#define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
-
- /* init device ... can sleep, or cause probe() failure */
- int (*bind)(struct usbnet *, struct usb_interface *);
-
- /* cleanup device ... can sleep, but can't fail */
- void (*unbind)(struct usbnet *, struct usb_interface *);
-
- /* reset device ... can sleep */
- int (*reset)(struct usbnet *);
-
- /* see if peer is connected ... can sleep */
- int (*check_connect)(struct usbnet *);
-
- /* fixup rx packet (strip framing) */
- int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
-
- /* fixup tx packet (add framing) */
- struct sk_buff *(*tx_fixup)(struct usbnet *dev,
- struct sk_buff *skb, int flags);
-
- // FIXME -- also an interrupt mechanism
- // useful for at least PL2301/2302 and GL620USB-A
- // and CDC use them to report 'is it connected' changes
-
- /* for new devices, use the descriptor-reading code instead */
- int in; /* rx endpoint */
- int out; /* tx endpoint */
-
- unsigned long data; /* Misc driver specific data */
-};
-
-// we record the state for each of our queued skbs
-enum skb_state {
- illegal = 0,
- tx_start, tx_done,
- rx_start, rx_done, rx_cleanup
-};
-
-struct skb_data { // skb->cb is one of these
- struct urb *urb;
- struct usbnet *dev;
- enum skb_state state;
- size_t length;
-};
-
-static const char driver_name [] = "usbnet";
-
-/* use ethtool to change the level for any given device */
-static int msg_level = 1;
-MODULE_PARM (msg_level, "i");
-MODULE_PARM_DESC (msg_level, "Initial message level (default = 1)");
-
-
-#define RUN_CONTEXT (in_irq () ? "in_irq" \
- : (in_interrupt () ? "in_interrupt" : "can sleep"))
-
-#ifdef DEBUG
-#define devdbg(usbnet, fmt, arg...) \
- printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
-#else
-#define devdbg(usbnet, fmt, arg...) do {} while(0)
-#endif
-
-#define deverr(usbnet, fmt, arg...) \
- printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
-#define devwarn(usbnet, fmt, arg...) \
- printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
-
-#define devinfo(usbnet, fmt, arg...) \
- do { if ((usbnet)->msg_level >= 1) \
- printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
- } while (0)
-
-/*-------------------------------------------------------------------------*/
-
-static void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *);
-static u32 usbnet_get_link (struct net_device *);
-static u32 usbnet_get_msglevel (struct net_device *);
-static void usbnet_set_msglevel (struct net_device *, u32);
-
-/* mostly for PDA style devices, which are always connected if present */
-static int always_connected (struct usbnet *dev)
-{
- return 0;
-}
-
-/* handles CDC Ethernet and many other network "bulk data" interfaces */
-static int
-get_endpoints (struct usbnet *dev, struct usb_interface *intf)
-{
- int tmp;
- struct usb_host_interface *alt;
- struct usb_host_endpoint *in, *out;
-
- for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
- unsigned ep;
-
- in = out = NULL;
- alt = intf->altsetting + tmp;
-
- /* take the first altsetting with in-bulk + out-bulk;
- * ignore other endpoints and altsetttings.
- */
- for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
- struct usb_host_endpoint *e;
-
- e = alt->endpoint + ep;
- if (e->desc.bmAttributes != USB_ENDPOINT_XFER_BULK)
- continue;
- if (e->desc.bEndpointAddress & USB_DIR_IN) {
- if (!in)
- in = e;
- } else {
- if (!out)
- out = e;
- }
- if (in && out)
- goto found;
- }
- }
- return -EINVAL;
-
-found:
- if (alt->desc.bAlternateSetting != 0
- || !(dev->driver_info->flags & FLAG_NO_SETINT)) {
- tmp = usb_set_interface (dev->udev, alt->desc.bInterfaceNumber,
- alt->desc.bAlternateSetting);
- if (tmp < 0)
- return tmp;
- }
-
- dev->in = usb_rcvbulkpipe (dev->udev,
- in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
- dev->out = usb_sndbulkpipe (dev->udev,
- out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
- return 0;
-}
-
-static void skb_return (struct usbnet *dev, struct sk_buff *skb)
-{
- int status;
-
- skb->dev = dev->net;
- skb->protocol = eth_type_trans (skb, dev->net);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += skb->len;
-
-#ifdef VERBOSE
- devdbg (dev, "< rx, len %d, type 0x%x",
- skb->len + sizeof (struct ethhdr), skb->protocol);
-#endif
- memset (skb->cb, 0, sizeof (struct skb_data));
- status = netif_rx (skb);
- if (status != NET_RX_SUCCESS)
- devdbg (dev, "netif_rx status %d", status);
-}
-
-\f
-#ifdef CONFIG_USB_ALI_M5632
-#define HAVE_HARDWARE
-
-/*-------------------------------------------------------------------------
- *
- * ALi M5632 driver ... does high speed
- *
- *-------------------------------------------------------------------------*/
-
-static const struct driver_info ali_m5632_info = {
- .description = "ALi M5632",
-};
-
-
-#endif
-
-\f
-#ifdef CONFIG_USB_AN2720
-#define HAVE_HARDWARE
-
-/*-------------------------------------------------------------------------
- *
- * AnchorChips 2720 driver ... http://www.cypress.com
- *
- * This doesn't seem to have a way to detect whether the peer is
- * connected, or need any reset handshaking. It's got pretty big
- * internal buffers (handles most of a frame's worth of data).
- * Chip data sheets don't describe any vendor control messages.
- *
- *-------------------------------------------------------------------------*/
-
-static const struct driver_info an2720_info = {
- .description = "AnchorChips/Cypress 2720",
- // no reset available!
- // no check_connect available!
-
- .in = 2, .out = 2, // direction distinguishes these
-};
-
-#endif /* CONFIG_USB_AN2720 */
-
-\f
-#ifdef CONFIG_USB_AX8817X
-/* ASIX AX8817X based USB 2.0 Ethernet Devices */
-
-#define HAVE_HARDWARE
-#define NEED_MII
-
-#include <linux/crc32.h>
-
-#define AX_CMD_SET_SW_MII 0x06
-#define AX_CMD_READ_MII_REG 0x07
-#define AX_CMD_WRITE_MII_REG 0x08
-#define AX_CMD_SET_HW_MII 0x0a
-#define AX_CMD_READ_EEPROM 0x0b
-#define AX_CMD_WRITE_EEPROM 0x0c
-#define AX_CMD_WRITE_RX_CTL 0x10
-#define AX_CMD_READ_IPG012 0x11
-#define AX_CMD_WRITE_IPG0 0x12
-#define AX_CMD_WRITE_IPG1 0x13
-#define AX_CMD_WRITE_IPG2 0x14
-#define AX_CMD_WRITE_MULTI_FILTER 0x16
-#define AX_CMD_READ_NODE_ID 0x17
-#define AX_CMD_READ_PHY_ID 0x19
-#define AX_CMD_WRITE_MEDIUM_MODE 0x1b
-#define AX_CMD_READ_MONITOR_MODE 0x1c
-#define AX_CMD_WRITE_MONITOR_MODE 0x1d
-#define AX_CMD_WRITE_GPIOS 0x1f
-
-#define AX_MONITOR_MODE 0x01
-#define AX_MONITOR_LINK 0x02
-#define AX_MONITOR_MAGIC 0x04
-#define AX_MONITOR_HSFS 0x10
-
-#define AX_MCAST_FILTER_SIZE 8
-#define AX_MAX_MCAST 64
-
-#define AX_INTERRUPT_BUFSIZE 8
-
-/* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
-struct ax8817x_data {
- u8 multi_filter[AX_MCAST_FILTER_SIZE];
- struct urb *int_urb;
- u8 *int_buf;
-};
-
-static int ax8817x_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
- u16 size, void *data)
-{
- return usb_control_msg(
- dev->udev,
- usb_rcvctrlpipe(dev->udev, 0),
- cmd,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- value,
- index,
- data,
- size,
- CONTROL_TIMEOUT_JIFFIES);
-}
-
-static int ax8817x_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
- u16 size, void *data)
-{
- return usb_control_msg(
- dev->udev,
- usb_sndctrlpipe(dev->udev, 0),
- cmd,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- value,
- index,
- data,
- size,
- CONTROL_TIMEOUT_JIFFIES);
-}
-
-static void ax8817x_async_cmd_callback(struct urb *urb, struct pt_regs *regs)
-{
- struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
-
- if (urb->status < 0)
- printk(KERN_DEBUG "ax8817x_async_cmd_callback() failed with %d",
- urb->status);
-
- kfree(req);
- usb_free_urb(urb);
-}
-
-static void ax8817x_interrupt_complete(struct urb *urb, struct pt_regs *regs)
-{
- struct usbnet *dev = (struct usbnet *)urb->context;
- struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
- int link;
-
- if (urb->status < 0) {
- printk(KERN_DEBUG "ax8817x_interrupt_complete() failed with %d",
- urb->status);
- } else {
- if (data->int_buf[5] == 0x90) {
- link = data->int_buf[2] & 0x01;
- if (netif_carrier_ok(dev->net) != link) {
- if (link)
- netif_carrier_on(dev->net);
- else
- netif_carrier_off(dev->net);
- devdbg(dev, "ax8817x - Link Status is: %d", link);
- }
- }
- usb_submit_urb(data->int_urb, GFP_KERNEL);
- }
-}
-
-static void ax8817x_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
- u16 size, void *data)
-{
- struct usb_ctrlrequest *req;
- int status;
- struct urb *urb;
-
- if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
- devdbg(dev, "Error allocating URB in write_cmd_async!");
- return;
- }
-
- if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) {
- deverr(dev, "Failed to allocate memory for control request");
- usb_free_urb(urb);
- return;
- }
-
- req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
- req->bRequest = cmd;
- req->wValue = cpu_to_le16(value);
- req->wIndex = cpu_to_le16(index);
- req->wLength = cpu_to_le16(size);
-
- usb_fill_control_urb(urb, dev->udev,
- usb_sndctrlpipe(dev->udev, 0),
- (void *)req, data, size,
- ax8817x_async_cmd_callback, req);
-
- if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
- deverr(dev, "Error submitting the control message: status=%d", status);
- kfree(req);
- usb_free_urb(urb);
- }
-}
-
-static void ax8817x_set_multicast(struct net_device *net)
-{
- struct usbnet *dev = (struct usbnet *) net->priv;
- struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
- u8 rx_ctl = 0x8c;
-
- if (net->flags & IFF_PROMISC) {
- rx_ctl |= 0x01;
- } else if (net->flags & IFF_ALLMULTI
- || net->mc_count > AX_MAX_MCAST) {
- rx_ctl |= 0x02;
- } else if (net->mc_count == 0) {
- /* 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 dev_mc_list *mc_list = net->mc_list;
- u32 crc_bits;
- int i;
-
- memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
-
- /* Build the multicast hash filter. */
- for (i = 0; i < net->mc_count; i++) {
- crc_bits =
- ether_crc(ETH_ALEN,
- mc_list->dmi_addr) >> 26;
- data->multi_filter[crc_bits >> 3] |=
- 1 << (crc_bits & 7);
- mc_list = mc_list->next;
- }
-
- ax8817x_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
- AX_MCAST_FILTER_SIZE, data->multi_filter);
-
- rx_ctl |= 0x10;
- }
-
- ax8817x_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
-}
-
-static int ax8817x_mdio_read(struct net_device *netdev, int phy_id, int loc)
-{
- struct usbnet *dev = netdev->priv;
- u16 res;
- u8 buf[1];
-
- ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
- ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
- ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
-
- return res & 0xffff;
-}
-
-static void ax8817x_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
-{
- struct usbnet *dev = netdev->priv;
- u16 res = val;
- u8 buf[1];
-
- ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
- ax8817x_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
- ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
-}
-
-static void ax8817x_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
-{
- struct usbnet *dev = (struct usbnet *)net->priv;
- u8 opt;
-
- if (ax8817x_read_cmd(dev, AX_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 & AX_MONITOR_MODE) {
- if (opt & AX_MONITOR_LINK)
- wolinfo->wolopts |= WAKE_PHY;
- if (opt & AX_MONITOR_MAGIC)
- wolinfo->wolopts |= WAKE_MAGIC;
- }
-}
-
-static int ax8817x_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
-{
- struct usbnet *dev = (struct usbnet *)net->priv;
- u8 opt = 0;
- u8 buf[1];
-
- if (wolinfo->wolopts & WAKE_PHY)
- opt |= AX_MONITOR_LINK;
- if (wolinfo->wolopts & WAKE_MAGIC)
- opt |= AX_MONITOR_MAGIC;
- if (opt != 0)
- opt |= AX_MONITOR_MODE;
-
- if (ax8817x_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
- opt, 0, 0, &buf) < 0)
- return -EINVAL;
-
- return 0;
-}
-
-static int ax8817x_get_eeprom(struct net_device *net,
- struct ethtool_eeprom *eeprom, u8 *data)
-{
- struct usbnet *dev = (struct usbnet *)net->priv;
- u16 *ebuf = (u16 *)data;
- int i;
-
- /* Crude hack to ensure that we don't overwrite memory
- * if an odd length is supplied
- */
- if (eeprom->len % 2)
- return -EINVAL;
-
- /* ax8817x returns 2 bytes from eeprom on read */
- for (i=0; i < eeprom->len / 2; i++) {
- if (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM,
- eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
- return -EINVAL;
- }
- return i * 2;
-}
-
-static void ax8817x_get_drvinfo (struct net_device *net,
- struct ethtool_drvinfo *info)
-{
- /* Inherit standard device info */
- usbnet_get_drvinfo(net, info);
- info->eedump_len = 0x3e;
-}
-
-static int ax8817x_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
-{
- struct usbnet *dev = (struct usbnet *)net->priv;
-
- return mii_ethtool_gset(&dev->mii,cmd);
-}
-
-static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
-{
- struct usbnet *dev = (struct usbnet *)net->priv;
-
- return mii_ethtool_sset(&dev->mii,cmd);
-}
-
-/* We need to override some ethtool_ops so we require our
- own structure so we don't interfere with other usbnet
- devices that may be connected at the same time. */
-static struct ethtool_ops ax8817x_ethtool_ops = {
- .get_drvinfo = ax8817x_get_drvinfo,
- .get_link = ethtool_op_get_link,
- .get_msglevel = usbnet_get_msglevel,
- .set_msglevel = usbnet_set_msglevel,
- .get_wol = ax8817x_get_wol,
- .set_wol = ax8817x_set_wol,
- .get_eeprom = ax8817x_get_eeprom,
- .get_settings = ax8817x_get_settings,
- .set_settings = ax8817x_set_settings,
-};
-
-static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf)
-{
- int ret;
- u8 buf[6];
- int i;
- unsigned long gpio_bits = dev->driver_info->data;
- struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
-
- dev->in = usb_rcvbulkpipe(dev->udev, 3);
- dev->out = usb_sndbulkpipe(dev->udev, 2);
-
- // allocate irq urb
- if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
- dbg ("%s: cannot allocate interrupt URB",
- dev->net->name);
- return -ENOMEM;
- }
-
- if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) == NULL) {
- dbg ("%s: cannot allocate memory for interrupt buffer",
- dev->net->name);
- usb_free_urb(data->int_urb);
- return -ENOMEM;
- }
- memset(data->int_buf, 0, AX_INTERRUPT_BUFSIZE);
-
- usb_fill_int_urb (data->int_urb, dev->udev,
- usb_rcvintpipe (dev->udev, 1),
- data->int_buf, AX_INTERRUPT_BUFSIZE,
- ax8817x_interrupt_complete, dev,
- dev->udev->speed == USB_SPEED_HIGH ? 8 : 100);
-
- /* Toggle the GPIOs in a manufacturer/model specific way */
- for (i = 2; i >= 0; i--) {
- if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
- (gpio_bits >> (i * 8)) & 0xff, 0, 0,
- buf)) < 0)
- return ret;
- msleep(5);
- }
-
- if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x80, 0, 0, buf)) < 0) {
- dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret);
- return ret;
- }
-
- /* Get the MAC address */
- memset(buf, 0, ETH_ALEN);
- if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, 6, buf)) < 0) {
- dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
- return ret;
- }
- memcpy(dev->net->dev_addr, buf, ETH_ALEN);
-
- /* Get the PHY id */
- if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
- dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret);
- return ret;
- } else if (ret < 2) {
- /* this should always return 2 bytes */
- dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", ret);
- return -EIO;
- }
-
- /* Initialize MII structure */
- dev->mii.dev = dev->net;
- dev->mii.mdio_read = ax8817x_mdio_read;
- dev->mii.mdio_write = ax8817x_mdio_write;
- dev->mii.phy_id_mask = 0x3f;
- dev->mii.reg_num_mask = 0x1f;
- dev->mii.phy_id = buf[1];
-
- dev->net->set_multicast_list = ax8817x_set_multicast;
- dev->net->ethtool_ops = &ax8817x_ethtool_ops;
-
- ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
- cpu_to_le16(BMCR_RESET));
- ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
- cpu_to_le16(ADVERTISE_ALL | ADVERTISE_CSMA | 0x0400));
- mii_nway_restart(&dev->mii);
-
- if((ret = usb_submit_urb(data->int_urb, GFP_KERNEL)) < 0) {
- dbg("Failed to submit interrupt URB: %02x", ret);
- usb_free_urb(data->int_urb);
- return ret;
- }
-
- return 0;
-}
-
-static void ax8817x_unbind(struct usbnet *dev, struct usb_interface *intf)
-{
- struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
-
- usb_unlink_urb(data->int_urb);
- usb_free_urb(data->int_urb);
- kfree(data->int_buf);
-}
-
-static const struct driver_info ax8817x_info = {
- .description = "ASIX AX8817x USB 2.0 Ethernet",
- .bind = ax8817x_bind,
- .unbind = ax8817x_unbind,
- .flags = FLAG_ETHER,
- .data = 0x00130103,
-};
-
-static const struct driver_info dlink_dub_e100_info = {
- .description = "DLink DUB-E100 USB Ethernet",
- .bind = ax8817x_bind,
- .unbind = ax8817x_unbind,
- .flags = FLAG_ETHER,
- .data = 0x009f9d9f,
-};
-
-static const struct driver_info netgear_fa120_info = {
- .description = "Netgear FA-120 USB Ethernet",
- .bind = ax8817x_bind,
- .unbind = ax8817x_unbind,
- .flags = FLAG_ETHER,
- .data = 0x00130103,
-};
-
-static const struct driver_info hawking_uf200_info = {
- .description = "Hawking UF200 USB Ethernet",
- .bind = ax8817x_bind,
- .unbind = ax8817x_unbind,
- .flags = FLAG_ETHER,
- .data = 0x001f1d1f,
-};
-
-#endif /* CONFIG_USB_AX8817X */
-
-
-\f
-#ifdef CONFIG_USB_BELKIN
-#define HAVE_HARDWARE
-
-/*-------------------------------------------------------------------------
- *
- * Belkin F5U104 ... two NetChip 2280 devices + Atmel microcontroller
- *
- * ... also two eTEK designs, including one sold as "Advance USBNET"
- *
- *-------------------------------------------------------------------------*/
-
-static const struct driver_info belkin_info = {
- .description = "Belkin, eTEK, or compatible",
-};
-
-#endif /* CONFIG_USB_BELKIN */
-
-
-\f
-/*-------------------------------------------------------------------------
- *
- * Communications Device Class declarations.
- * Used by CDC Ethernet, and some CDC variants
- *
- *-------------------------------------------------------------------------*/
-
-#ifdef CONFIG_USB_CDCETHER
-#define NEED_GENERIC_CDC
-#endif
-
-#ifdef CONFIG_USB_ZAURUS
-/* Ethernet variant uses funky framing, broken ethernet addressing */
-#define NEED_GENERIC_CDC
-#endif
-
-#ifdef CONFIG_USB_RNDIS
-/* ACM variant uses even funkier framing, complex control RPC scheme */
-#define NEED_GENERIC_CDC
-#endif
-
-
-#ifdef NEED_GENERIC_CDC
-
-/* "Header Functional Descriptor" from CDC spec 5.2.3.1 */
-struct header_desc {
- u8 bLength;
- u8 bDescriptorType;
- u8 bDescriptorSubType;
-
- u16 bcdCDC;
-} __attribute__ ((packed));
-
-/* "Union Functional Descriptor" from CDC spec 5.2.3.X */
-struct union_desc {
- u8 bLength;
- u8 bDescriptorType;
- u8 bDescriptorSubType;
-
- u8 bMasterInterface0;
- u8 bSlaveInterface0;
- /* ... and there could be other slave interfaces */
-} __attribute__ ((packed));
-
-/* "Ethernet Networking Functional Descriptor" from CDC spec 5.2.3.16 */
-struct ether_desc {
- u8 bLength;
- u8 bDescriptorType;
- u8 bDescriptorSubType;
-
- u8 iMACAddress;
- u32 bmEthernetStatistics;
- u16 wMaxSegmentSize;
- u16 wNumberMCFilters;
- u8 bNumberPowerFilters;
-} __attribute__ ((packed));
-
-struct cdc_state {
- struct header_desc *header;
- struct union_desc *u;
- struct ether_desc *ether;
- struct usb_interface *control;
- struct usb_interface *data;
-};
-
-static struct usb_driver usbnet_driver;
-
-/*
- * probes control interface, claims data interface, collects the bulk
- * endpoints, activates data interface (if needed), maybe sets MTU.
- * all pure cdc, except for certain firmware workarounds.
- */
-static int generic_cdc_bind (struct usbnet *dev, struct usb_interface *intf)
-{
- u8 *buf = intf->cur_altsetting->extra;
- int len = intf->cur_altsetting->extralen;
- struct usb_interface_descriptor *d;
- struct cdc_state *info = (void *) &dev->data;
- int status;
- int rndis;
-
- if (sizeof dev->data < sizeof *info)
- return -EDOM;
-
- /* expect strict spec conformance for the descriptors, but
- * cope with firmware which stores them in the wrong place
- */
- if (len == 0 && dev->udev->actconfig->extralen) {
- /* Motorola SB4100 (and others: Brad Hards says it's
- * from a Broadcom design) put CDC descriptors here
- */
- buf = dev->udev->actconfig->extra;
- len = dev->udev->actconfig->extralen;
- if (len)
- dev_dbg (&intf->dev,
- "CDC descriptors on config\n");
- }
-
- /* this assumes that if there's a non-RNDIS vendor variant
- * of cdc-acm, it'll fail RNDIS requests cleanly.
- */
- rndis = (intf->cur_altsetting->desc.bInterfaceProtocol == 0xff);
-
- memset (info, 0, sizeof *info);
- info->control = intf;
- while (len > 3) {
- if (buf [1] != USB_DT_CS_INTERFACE)
- goto next_desc;
-
- /* use bDescriptorSubType to identify the CDC descriptors.
- * We expect devices with CDC header and union descriptors.
- * For CDC Ethernet we need the ethernet descriptor.
- * For RNDIS, ignore two (pointless) CDC modem descriptors
- * in favor of a complicated OID-based RPC scheme doing what
- * CDC Ethernet achieves with a simple descriptor.
- */
- switch (buf [2]) {
- case 0x00: /* Header, mostly useless */
- if (info->header) {
- dev_dbg (&intf->dev, "extra CDC header\n");
- goto bad_desc;
- }
- info->header = (void *) buf;
- if (info->header->bLength != sizeof *info->header) {
- dev_dbg (&intf->dev, "CDC header len %u\n",
- info->header->bLength);
- goto bad_desc;
- }
- break;
- case 0x06: /* Union (groups interfaces) */
- if (info->u) {
- dev_dbg (&intf->dev, "extra CDC union\n");
- goto bad_desc;
- }
- info->u = (void *) buf;
- if (info->u->bLength != sizeof *info->u) {
- dev_dbg (&intf->dev, "CDC union len %u\n",
- info->u->bLength);
- goto bad_desc;
- }
-
- /* we need a master/control interface (what we're
- * probed with) and a slave/data interface; union
- * descriptors sort this all out.
- */
- info->control = usb_ifnum_to_if(dev->udev,
- info->u->bMasterInterface0);
- info->data = usb_ifnum_to_if(dev->udev,
- info->u->bSlaveInterface0);
- if (!info->control || !info->data) {
- dev_dbg (&intf->dev,
- "master #%u/%p slave #%u/%p\n",
- info->u->bMasterInterface0,
- info->control,
- info->u->bSlaveInterface0,
- info->data);
- goto bad_desc;
- }
- if (info->control != intf) {
- dev_dbg (&intf->dev, "bogus CDC Union\n");
- /* Ambit USB Cable Modem (and maybe others)
- * interchanges master and slave interface.
- */
- if (info->data == intf) {
- info->data = info->control;
- info->control = intf;
- } else
- goto bad_desc;
- }
-
- /* a data interface altsetting does the real i/o */
- d = &info->data->cur_altsetting->desc;
- if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
- dev_dbg (&intf->dev, "slave class %u\n",
- d->bInterfaceClass);
- goto bad_desc;
- }
- break;
- case 0x0F: /* Ethernet Networking */
- if (info->ether) {
- dev_dbg (&intf->dev, "extra CDC ether\n");
- goto bad_desc;
- }
- info->ether = (void *) buf;
- if (info->ether->bLength != sizeof *info->ether) {
- dev_dbg (&intf->dev, "CDC ether len %u\n",
- info->u->bLength);
- goto bad_desc;
- }
- dev->net->mtu = cpu_to_le16p (
- &info->ether->wMaxSegmentSize)
- - ETH_HLEN;
- /* because of Zaurus, we may be ignoring the host
- * side link address we were given.
- */
- break;
- }
-next_desc:
- len -= buf [0]; /* bLength */
- buf += buf [0];
- }
-
- if (!info->header || !info->u || (!rndis && !info->ether)) {
- dev_dbg (&intf->dev, "missing cdc %s%s%sdescriptor\n",
- info->header ? "" : "header ",
- info->u ? "" : "union ",
- info->ether ? "" : "ether ");
- goto bad_desc;
- }
-
- /* claim data interface and set it up ... with side effects.
- * network traffic can't flow until an altsetting is enabled.
- */
- status = usb_driver_claim_interface (&usbnet_driver, info->data, dev);
- if (status < 0)
- return status;
- status = get_endpoints (dev, info->data);
- if (status < 0) {
- /* ensure immediate exit from usbnet_disconnect */
- usb_set_intfdata(info->data, NULL);
- usb_driver_release_interface (&usbnet_driver, info->data);
- return status;
- }
- return 0;
-
-bad_desc:
- dev_info (&dev->udev->dev, "bad CDC descriptors\n");
- return -ENODEV;
-}
-
-static void cdc_unbind (struct usbnet *dev, struct usb_interface *intf)
-{
- struct cdc_state *info = (void *) &dev->data;
-
- /* disconnect master --> disconnect slave */
- if (intf == info->control && info->data) {
- /* ensure immediate exit from usbnet_disconnect */
- usb_set_intfdata(info->data, NULL);
- usb_driver_release_interface (&usbnet_driver, info->data);
- info->data = NULL;
- }
-
- /* and vice versa (just in case) */
- else if (intf == info->data && info->control) {
- /* ensure immediate exit from usbnet_disconnect */
- usb_set_intfdata(info->control, NULL);
- usb_driver_release_interface (&usbnet_driver, info->control);
- info->control = NULL;
- }
-}
-
-#endif /* NEED_GENERIC_CDC */
-
-\f
-#ifdef CONFIG_USB_CDCETHER
-#define HAVE_HARDWARE
-
-/*-------------------------------------------------------------------------
- *
- * Communications Device Class, Ethernet Control model
- *
- * Takes two interfaces. The DATA interface is inactive till an altsetting
- * is selected. Configuration data includes class descriptors.
- *
- * This should interop with whatever the 2.4 "CDCEther.c" driver
- * (by Brad Hards) talked with.
- *
- *-------------------------------------------------------------------------*/
-
-#include <linux/ctype.h>
-
-static u8 nibble (unsigned char c)
-{
- if (likely (isdigit (c)))
- return c - '0';
- c = toupper (c);
- if (likely (isxdigit (c)))
- return 10 + c - 'A';
- return 0;
-}
-
-static inline int
-get_ethernet_addr (struct usbnet *dev, struct ether_desc *e)
-{
- int tmp, i;
- unsigned char buf [13];
-
- tmp = usb_string (dev->udev, e->iMACAddress, buf, sizeof buf);
- if (tmp != 12) {
- dev_dbg (&dev->udev->dev,
- "bad MAC string %d fetch, %d\n", e->iMACAddress, tmp);
- if (tmp >= 0)
- tmp = -EINVAL;
- return tmp;
- }
- for (i = tmp = 0; i < 6; i++, tmp += 2)
- dev->net->dev_addr [i] =
- (nibble (buf [tmp]) << 4) + nibble (buf [tmp + 1]);
- return 0;
-}
-
-static int cdc_bind (struct usbnet *dev, struct usb_interface *intf)
-{
- int status;
- struct cdc_state *info = (void *) &dev->data;
-
- status = generic_cdc_bind (dev, intf);
- if (status < 0)
- return status;
-
- status = get_ethernet_addr (dev, info->ether);
- if (status < 0) {
- usb_set_intfdata(info->data, NULL);
- usb_driver_release_interface (&usbnet_driver, info->data);
- return status;
- }
-
- /* FIXME cdc-ether has some multicast code too, though it complains
- * in routine cases. info->ether describes the multicast support.
- */
- return 0;
-}
-
-static const struct driver_info cdc_info = {
- .description = "CDC Ethernet Device",
- .flags = FLAG_ETHER,
- // .check_connect = cdc_check_connect,
- .bind = cdc_bind,
- .unbind = cdc_unbind,
-};
-
-#endif /* CONFIG_USB_CDCETHER */
-
-
-\f
-#ifdef CONFIG_USB_EPSON2888
-#define HAVE_HARDWARE
-
-/*-------------------------------------------------------------------------
- *
- * EPSON USB clients
- *
- * This is the same idea as Linux PDAs (below) except the firmware in the
- * device might not be Tux-powered. Epson provides reference firmware that
- * implements this interface. Product developers can reuse or modify that
- * code, such as by using their own product and vendor codes.
- *
- * Support was from Juro Bystricky <bystricky.juro@erd.epson.com>
- *
- *-------------------------------------------------------------------------*/
-
-static const struct driver_info epson2888_info = {
- .description = "Epson USB Device",
- .check_connect = always_connected,
-
- .in = 4, .out = 3,
-};
-
-#endif /* CONFIG_USB_EPSON2888 */
-
-\f
-#ifdef CONFIG_USB_GENESYS
-#define HAVE_HARDWARE
-
-/*-------------------------------------------------------------------------
- *
- * GeneSys GL620USB-A (www.genesyslogic.com.tw)
- *
- * ... should partially interop with the Win32 driver for this hardware
- * The GeneSys docs imply there's some NDIS issue motivating this framing.
- *
- * Some info from GeneSys:
- * - GL620USB-A is full duplex; GL620USB is only half duplex for bulk.
- * (Some cables, like the BAFO-100c, use the half duplex version.)
- * - For the full duplex model, the low bit of the version code says
- * which side is which ("left/right").
- * - For the half duplex type, a control/interrupt handshake settles
- * the transfer direction. (That's disabled here, partially coded.)
- * A control URB would block until other side writes an interrupt.
- *
- * Original code from Jiun-Jie Huang <huangjj@genesyslogic.com.tw>
- * and merged into "usbnet" by Stanislav Brabec <utx@penguin.cz>.
- *
- *-------------------------------------------------------------------------*/
-
-// control msg write command
-#define GENELINK_CONNECT_WRITE 0xF0
-// interrupt pipe index
-#define GENELINK_INTERRUPT_PIPE 0x03
-// interrupt read buffer size
-#define INTERRUPT_BUFSIZE 0x08
-// interrupt pipe interval value
-#define GENELINK_INTERRUPT_INTERVAL 0x10
-// max transmit packet number per transmit
-#define GL_MAX_TRANSMIT_PACKETS 32
-// max packet length
-#define GL_MAX_PACKET_LEN 1514
-// max receive buffer size
-#define GL_RCV_BUF_SIZE \
- (((GL_MAX_PACKET_LEN + 4) * GL_MAX_TRANSMIT_PACKETS) + 4)
-
-struct gl_packet {
- u32 packet_length;
- char packet_data [1];
-};
-
-struct gl_header {
- u32 packet_count;
- struct gl_packet packets;
-};
-
-#ifdef GENLINK_ACK
-
-// FIXME: this code is incomplete, not debugged; it doesn't
-// handle interrupts correctly. interrupts should be generic
-// code like all other device I/O, anyway.
-
-struct gl_priv {
- struct urb *irq_urb;
- char irq_buf [INTERRUPT_BUFSIZE];
-};
-
-static inline int gl_control_write (struct usbnet *dev, u8 request, u16 value)
-{
- int retval;
-
- retval = usb_control_msg (dev->udev,
- usb_sndctrlpipe (dev->udev, 0),
- request,
- USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
- value,
- 0, // index
- 0, // data buffer
- 0, // size
- CONTROL_TIMEOUT_JIFFIES);
- return retval;
-}
-
-static void gl_interrupt_complete (struct urb *urb, struct pt_regs *regs)
-{
- int status = urb->status;
-
- switch (status) {
- case 0:
- /* success */
- break;
- case -ECONNRESET:
- case -ENOENT:
- case -ESHUTDOWN:
- /* this urb is terminated, clean up */
- dbg("%s - urb shutting down with status: %d",
- __FUNCTION__, status);
- return;
- default:
- dbg("%s - nonzero urb status received: %d",
- __FUNCTION__, urb->status);
- }
-
- status = usb_submit_urb (urb, GFP_ATOMIC);
- if (status)
- err ("%s - usb_submit_urb failed with result %d",
- __FUNCTION__, status);
-}
-
-static int gl_interrupt_read (struct usbnet *dev)
-{
- struct gl_priv *priv = dev->priv_data;
- int retval;
-
- // issue usb interrupt read
- if (priv && priv->irq_urb) {
- // submit urb
- if ((retval = usb_submit_urb (priv->irq_urb, GFP_KERNEL)) != 0)
- dbg ("gl_interrupt_read: submit fail - %X...", retval);
- else
- dbg ("gl_interrupt_read: submit success...");
- }
-
- return 0;
-}
-
-// check whether another side is connected
-static int genelink_check_connect (struct usbnet *dev)
-{
- int retval;
-
- dbg ("genelink_check_connect...");
-
- // detect whether another side is connected
- if ((retval = gl_control_write (dev, GENELINK_CONNECT_WRITE, 0)) != 0) {
- dbg ("%s: genelink_check_connect write fail - %X",
- dev->net->name, retval);
- return retval;
- }
-
- // usb interrupt read to ack another side
- if ((retval = gl_interrupt_read (dev)) != 0) {
- dbg ("%s: genelink_check_connect read fail - %X",
- dev->net->name, retval);
- return retval;
- }
-
- dbg ("%s: genelink_check_connect read success", dev->net->name);
- return 0;
-}
-
-// allocate and initialize the private data for genelink
-static int genelink_init (struct usbnet *dev)
-{
- struct gl_priv *priv;
-
- // allocate the private data structure
- if ((priv = kmalloc (sizeof *priv, GFP_KERNEL)) == 0) {
- dbg ("%s: cannot allocate private data per device",
- dev->net->name);
- return -ENOMEM;
- }
-
- // allocate irq urb
- if ((priv->irq_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
- dbg ("%s: cannot allocate private irq urb per device",
- dev->net->name);
- kfree (priv);
- return -ENOMEM;
- }
-
- // fill irq urb
- usb_fill_int_urb (priv->irq_urb, dev->udev,
- usb_rcvintpipe (dev->udev, GENELINK_INTERRUPT_PIPE),
- priv->irq_buf, INTERRUPT_BUFSIZE,
- gl_interrupt_complete, 0,
- GENELINK_INTERRUPT_INTERVAL);
-
- // set private data pointer
- dev->priv_data = priv;
-
- return 0;
-}
-
-// release the private data
-static int genelink_free (struct usbnet *dev)
-{
- struct gl_priv *priv = dev->priv_data;
-
- if (!priv)
- return 0;
-
-// FIXME: can't cancel here; it's synchronous, and
-// should have happened earlier in any case (interrupt
-// handling needs to be generic)
-
- // cancel irq urb first
- usb_unlink_urb (priv->irq_urb);
-
- // free irq urb
- usb_free_urb (priv->irq_urb);
-
- // free the private data structure
- kfree (priv);
-
- return 0;
-}
-
-#endif
-
-static int genelink_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
-{
- struct gl_header *header;
- struct gl_packet *packet;
- struct sk_buff *gl_skb;
- u32 size;
-
- header = (struct gl_header *) skb->data;
-
- // get the packet count of the received skb
- le32_to_cpus (&header->packet_count);
- if ((header->packet_count > GL_MAX_TRANSMIT_PACKETS)
- || (header->packet_count < 0)) {
- dbg ("genelink: invalid received packet count %d",
- header->packet_count);
- return 0;
- }
-
- // set the current packet pointer to the first packet
- packet = &header->packets;
-
- // decrement the length for the packet count size 4 bytes
- skb_pull (skb, 4);
-
- while (header->packet_count > 1) {
- // get the packet length
- size = packet->packet_length;
-
- // this may be a broken packet
- if (size > GL_MAX_PACKET_LEN) {
- dbg ("genelink: invalid rx length %d", size);
- return 0;
- }
-
- // allocate the skb for the individual packet
- gl_skb = alloc_skb (size, GFP_ATOMIC);
- if (gl_skb) {
-
- // copy the packet data to the new skb
- memcpy(skb_put(gl_skb, size), packet->packet_data, size);
- skb_return (dev, skb);
- }
-
- // advance to the next packet
- packet = (struct gl_packet *)
- &packet->packet_data [size];
- header->packet_count--;
-
- // shift the data pointer to the next gl_packet
- skb_pull (skb, size + 4);
- }
-
- // skip the packet length field 4 bytes
- skb_pull (skb, 4);
-
- if (skb->len > GL_MAX_PACKET_LEN) {
- dbg ("genelink: invalid rx length %d", skb->len);
- return 0;
- }
- return 1;
-}
-
-static struct sk_buff *
-genelink_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
-{
- int padlen;
- int length = skb->len;
- int headroom = skb_headroom (skb);
- int tailroom = skb_tailroom (skb);
- u32 *packet_count;
- u32 *packet_len;
-
- // FIXME: magic numbers, bleech
- padlen = ((skb->len + (4 + 4*1)) % 64) ? 0 : 1;
-
- if ((!skb_cloned (skb))
- && ((headroom + tailroom) >= (padlen + (4 + 4*1)))) {
- if ((headroom < (4 + 4*1)) || (tailroom < padlen)) {
- skb->data = memmove (skb->head + (4 + 4*1),
- skb->data, skb->len);
- skb->tail = skb->data + skb->len;
- }
- } else {
- struct sk_buff *skb2;
- skb2 = skb_copy_expand (skb, (4 + 4*1) , padlen, flags);
- dev_kfree_skb_any (skb);
- skb = skb2;
- if (!skb)
- return NULL;
- }
-
- // attach the packet count to the header
- packet_count = (u32 *) skb_push (skb, (4 + 4*1));
- packet_len = packet_count + 1;
-
- // FIXME little endian?
- *packet_count = 1;
- *packet_len = length;
-
- // add padding byte
- if ((skb->len % dev->maxpacket) == 0)
- skb_put (skb, 1);
-
- return skb;
-}
-
-static const struct driver_info genelink_info = {
- .description = "Genesys GeneLink",
- .flags = FLAG_FRAMING_GL | FLAG_NO_SETINT,
- .rx_fixup = genelink_rx_fixup,
- .tx_fixup = genelink_tx_fixup,
-
- .in = 1, .out = 2,
-
-#ifdef GENELINK_ACK
- .check_connect =genelink_check_connect,
-#endif
-};
-
-#endif /* CONFIG_USB_GENESYS */
-
-
-\f
-#ifdef CONFIG_USB_NET1080
-#define HAVE_HARDWARE
-
-/*-------------------------------------------------------------------------
- *
- * Netchip 1080 driver ... http://www.netchip.com
- * Used in LapLink cables
- *
- *-------------------------------------------------------------------------*/
-
-#define dev_packet_id data[0]
-#define frame_errors data[1]
-
-/*
- * NetChip framing of ethernet packets, supporting additional error
- * checks for links that may drop bulk packets from inside messages.
- * Odd USB length == always short read for last usb packet.
- * - nc_header
- * - Ethernet header (14 bytes)
- * - payload
- * - (optional padding byte, if needed so length becomes odd)
- * - nc_trailer
- *
- * This framing is to be avoided for non-NetChip devices.
- */
-
-struct nc_header { // packed:
- u16 hdr_len; // sizeof nc_header (LE, all)
- u16 packet_len; // payload size (including ethhdr)
- u16 packet_id; // detects dropped packets
-#define MIN_HEADER 6
-
- // all else is optional, and must start with:
- // u16 vendorId; // from usb-if
- // u16 productId;
-} __attribute__((__packed__));
-
-#define PAD_BYTE ((unsigned char)0xAC)
-
-struct nc_trailer {
- u16 packet_id;
-} __attribute__((__packed__));
-
-// packets may use FLAG_FRAMING_NC and optional pad
-#define FRAMED_SIZE(mtu) (sizeof (struct nc_header) \
- + sizeof (struct ethhdr) \
- + (mtu) \
- + 1 \
- + sizeof (struct nc_trailer))
-
-#define MIN_FRAMED FRAMED_SIZE(0)
-
-
-/*
- * Zero means no timeout; else, how long a 64 byte bulk packet may be queued
- * before the hardware drops it. If that's done, the driver will need to
- * frame network packets to guard against the dropped USB packets. The win32
- * driver sets this for both sides of the link.
- */
-#define NC_READ_TTL_MS ((u8)255) // ms
-
-/*
- * We ignore most registers and EEPROM contents.
- */
-#define REG_USBCTL ((u8)0x04)
-#define REG_TTL ((u8)0x10)
-#define REG_STATUS ((u8)0x11)
-
-/*
- * Vendor specific requests to read/write data
- */
-#define REQUEST_REGISTER ((u8)0x10)
-#define REQUEST_EEPROM ((u8)0x11)
-
-static int
-nc_vendor_read (struct usbnet *dev, u8 req, u8 regnum, u16 *retval_ptr)
-{
- int status = usb_control_msg (dev->udev,
- usb_rcvctrlpipe (dev->udev, 0),
- req,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 0, regnum,
- retval_ptr, sizeof *retval_ptr,
- CONTROL_TIMEOUT_JIFFIES);
- if (status > 0)
- status = 0;
- if (!status)
- le16_to_cpus (retval_ptr);
- return status;
-}
-
-static inline int
-nc_register_read (struct usbnet *dev, u8 regnum, u16 *retval_ptr)
-{
- return nc_vendor_read (dev, REQUEST_REGISTER, regnum, retval_ptr);
-}
-
-// no retval ... can become async, usable in_interrupt()
-static void
-nc_vendor_write (struct usbnet *dev, u8 req, u8 regnum, u16 value)
-{
- usb_control_msg (dev->udev,
- usb_sndctrlpipe (dev->udev, 0),
- req,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- value, regnum,
- NULL, 0, // data is in setup packet
- CONTROL_TIMEOUT_JIFFIES);
-}
-
-static inline void
-nc_register_write (struct usbnet *dev, u8 regnum, u16 value)
-{
- nc_vendor_write (dev, REQUEST_REGISTER, regnum, value);
-}
-
-
-#if 0
-static void nc_dump_registers (struct usbnet *dev)
-{
- u8 reg;
- u16 *vp = kmalloc (sizeof (u16));
-
- if (!vp) {
- dbg ("no memory?");
- return;
- }
-
- dbg ("%s registers:", dev->net->name);
- for (reg = 0; reg < 0x20; reg++) {
- int retval;
-
- // reading some registers is trouble
- if (reg >= 0x08 && reg <= 0xf)
- continue;
- if (reg >= 0x12 && reg <= 0x1e)
- continue;
-
- retval = nc_register_read (dev, reg, vp);
- if (retval < 0)
- dbg ("%s reg [0x%x] ==> error %d",
- dev->net->name, reg, retval);
- else
- dbg ("%s reg [0x%x] = 0x%x",
- dev->net->name, reg, *vp);
- }
- kfree (vp);
-}
-#endif
-
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Control register
- */
-
-#define USBCTL_WRITABLE_MASK 0x1f0f
-// bits 15-13 reserved, r/o
-#define USBCTL_ENABLE_LANG (1 << 12)
-#define USBCTL_ENABLE_MFGR (1 << 11)
-#define USBCTL_ENABLE_PROD (1 << 10)
-#define USBCTL_ENABLE_SERIAL (1 << 9)
-#define USBCTL_ENABLE_DEFAULTS (1 << 8)
-// bits 7-4 reserved, r/o
-#define USBCTL_FLUSH_OTHER (1 << 3)
-#define USBCTL_FLUSH_THIS (1 << 2)
-#define USBCTL_DISCONN_OTHER (1 << 1)
-#define USBCTL_DISCONN_THIS (1 << 0)
-
-static inline void nc_dump_usbctl (struct usbnet *dev, u16 usbctl)
-{
-#ifdef DEBUG
- devdbg (dev, "net1080 %s-%s usbctl 0x%x:%s%s%s%s%s;"
- " this%s%s;"
- " other%s%s; r/o 0x%x",
- dev->udev->bus->bus_name, dev->udev->devpath,
- usbctl,
- (usbctl & USBCTL_ENABLE_LANG) ? " lang" : "",
- (usbctl & USBCTL_ENABLE_MFGR) ? " mfgr" : "",
- (usbctl & USBCTL_ENABLE_PROD) ? " prod" : "",
- (usbctl & USBCTL_ENABLE_SERIAL) ? " serial" : "",
- (usbctl & USBCTL_ENABLE_DEFAULTS) ? " defaults" : "",
-
- (usbctl & USBCTL_FLUSH_OTHER) ? " FLUSH" : "",
- (usbctl & USBCTL_DISCONN_OTHER) ? " DIS" : "",
- (usbctl & USBCTL_FLUSH_THIS) ? " FLUSH" : "",
- (usbctl & USBCTL_DISCONN_THIS) ? " DIS" : "",
- usbctl & ~USBCTL_WRITABLE_MASK
- );
-#endif
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Status register
- */
-
-#define STATUS_PORT_A (1 << 15)
-
-#define STATUS_CONN_OTHER (1 << 14)
-#define STATUS_SUSPEND_OTHER (1 << 13)
-#define STATUS_MAILBOX_OTHER (1 << 12)
-#define STATUS_PACKETS_OTHER(n) (((n) >> 8) && 0x03)
-
-#define STATUS_CONN_THIS (1 << 6)
-#define STATUS_SUSPEND_THIS (1 << 5)
-#define STATUS_MAILBOX_THIS (1 << 4)
-#define STATUS_PACKETS_THIS(n) (((n) >> 0) && 0x03)
-
-#define STATUS_UNSPEC_MASK 0x0c8c
-#define STATUS_NOISE_MASK ((u16)~(0x0303|STATUS_UNSPEC_MASK))
-
-
-static inline void nc_dump_status (struct usbnet *dev, u16 status)
-{
-#ifdef DEBUG
- devdbg (dev, "net1080 %s-%s status 0x%x:"
- " this (%c) PKT=%d%s%s%s;"
- " other PKT=%d%s%s%s; unspec 0x%x",
- dev->udev->bus->bus_name, dev->udev->devpath,
- status,
-
- // XXX the packet counts don't seem right
- // (1 at reset, not 0); maybe UNSPEC too
-
- (status & STATUS_PORT_A) ? 'A' : 'B',
- STATUS_PACKETS_THIS (status),
- (status & STATUS_CONN_THIS) ? " CON" : "",
- (status & STATUS_SUSPEND_THIS) ? " SUS" : "",
- (status & STATUS_MAILBOX_THIS) ? " MBOX" : "",
-
- STATUS_PACKETS_OTHER (status),
- (status & STATUS_CONN_OTHER) ? " CON" : "",
- (status & STATUS_SUSPEND_OTHER) ? " SUS" : "",
- (status & STATUS_MAILBOX_OTHER) ? " MBOX" : "",
-
- status & STATUS_UNSPEC_MASK
- );
-#endif
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * TTL register
- */
-
-#define TTL_THIS(ttl) (0x00ff & ttl)
-#define TTL_OTHER(ttl) (0x00ff & (ttl >> 8))
-#define MK_TTL(this,other) ((u16)(((other)<<8)|(0x00ff&(this))))
-
-static inline void nc_dump_ttl (struct usbnet *dev, u16 ttl)
-{
-#ifdef DEBUG
- devdbg (dev, "net1080 %s-%s ttl 0x%x this = %d, other = %d",
- dev->udev->bus->bus_name, dev->udev->devpath,
- ttl,
-
- TTL_THIS (ttl),
- TTL_OTHER (ttl)
- );
-#endif
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int net1080_reset (struct usbnet *dev)
-{
- u16 usbctl, status, ttl;
- u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
- int retval;
-
- if (!vp)
- return -ENOMEM;
-
- // nc_dump_registers (dev);
-
- if ((retval = nc_register_read (dev, REG_STATUS, vp)) < 0) {
- dbg ("can't read %s-%s status: %d",
- dev->udev->bus->bus_name, dev->udev->devpath, retval);
- goto done;
- }
- status = *vp;
- // nc_dump_status (dev, status);
-
- if ((retval = nc_register_read (dev, REG_USBCTL, vp)) < 0) {
- dbg ("can't read USBCTL, %d", retval);
- goto done;
- }
- usbctl = *vp;
- // nc_dump_usbctl (dev, usbctl);
-
- nc_register_write (dev, REG_USBCTL,
- USBCTL_FLUSH_THIS | USBCTL_FLUSH_OTHER);
-
- if ((retval = nc_register_read (dev, REG_TTL, vp)) < 0) {
- dbg ("can't read TTL, %d", retval);
- goto done;
- }
- ttl = *vp;
- // nc_dump_ttl (dev, ttl);
-
- nc_register_write (dev, REG_TTL,
- MK_TTL (NC_READ_TTL_MS, TTL_OTHER (ttl)) );
- dbg ("%s: assigned TTL, %d ms", dev->net->name, NC_READ_TTL_MS);
-
- if (dev->msg_level >= 2)
- devinfo (dev, "port %c, peer %sconnected",
- (status & STATUS_PORT_A) ? 'A' : 'B',
- (status & STATUS_CONN_OTHER) ? "" : "dis"
- );
- retval = 0;
-
-done:
- kfree (vp);
- return retval;
-}
-
-static int net1080_check_connect (struct usbnet *dev)
-{
- int retval;
- u16 status;
- u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
-
- if (!vp)
- return -ENOMEM;
- retval = nc_register_read (dev, REG_STATUS, vp);
- status = *vp;
- kfree (vp);
- if (retval != 0) {
- dbg ("%s net1080_check_conn read - %d", dev->net->name, retval);
- return retval;
- }
- if ((status & STATUS_CONN_OTHER) != STATUS_CONN_OTHER)
- return -ENOLINK;
- return 0;
-}
-
-static void nc_flush_complete (struct urb *urb, struct pt_regs *regs)
-{
- kfree (urb->context);
- usb_free_urb(urb);
-}
-
-static void nc_ensure_sync (struct usbnet *dev)
-{
- dev->frame_errors++;
- if (dev->frame_errors > 5) {
- struct urb *urb;
- struct usb_ctrlrequest *req;
- int status;
-
- /* Send a flush */
- urb = usb_alloc_urb (0, SLAB_ATOMIC);
- if (!urb)
- return;
-
- req = kmalloc (sizeof *req, GFP_ATOMIC);
- if (!req) {
- usb_free_urb (urb);
- return;
- }
-
- req->bRequestType = USB_DIR_OUT
- | USB_TYPE_VENDOR
- | USB_RECIP_DEVICE;
- req->bRequest = REQUEST_REGISTER;
- req->wValue = cpu_to_le16 (USBCTL_FLUSH_THIS
- | USBCTL_FLUSH_OTHER);
- req->wIndex = cpu_to_le16 (REG_USBCTL);
- req->wLength = cpu_to_le16 (0);
-
- /* queue an async control request, we don't need
- * to do anything when it finishes except clean up.
- */
- usb_fill_control_urb (urb, dev->udev,
- usb_sndctrlpipe (dev->udev, 0),
- (unsigned char *) req,
- NULL, 0,
- nc_flush_complete, req);
- status = usb_submit_urb (urb, GFP_ATOMIC);
- if (status) {
- kfree (req);
- usb_free_urb (urb);
- return;
- }
-
- devdbg (dev, "flush net1080; too many framing errors");
- dev->frame_errors = 0;
- }
-}
-
-static int net1080_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
-{
- struct nc_header *header;
- struct nc_trailer *trailer;
-
- if (!(skb->len & 0x01)
- || MIN_FRAMED > skb->len
- || skb->len > FRAMED_SIZE (dev->net->mtu)) {
- dev->stats.rx_frame_errors++;
- dbg ("rx framesize %d range %d..%d mtu %d", skb->len,
- (int)MIN_FRAMED, (int)FRAMED_SIZE (dev->net->mtu),
- dev->net->mtu);
- nc_ensure_sync (dev);
- return 0;
- }
-
- header = (struct nc_header *) skb->data;
- le16_to_cpus (&header->hdr_len);
- le16_to_cpus (&header->packet_len);
- if (FRAMED_SIZE (header->packet_len) > MAX_PACKET) {
- dev->stats.rx_frame_errors++;
- dbg ("packet too big, %d", header->packet_len);
- nc_ensure_sync (dev);
- return 0;
- } else if (header->hdr_len < MIN_HEADER) {
- dev->stats.rx_frame_errors++;
- dbg ("header too short, %d", header->hdr_len);
- nc_ensure_sync (dev);
- return 0;
- } else if (header->hdr_len > MIN_HEADER) {
- // out of band data for us?
- dbg ("header OOB, %d bytes",
- header->hdr_len - MIN_HEADER);
- nc_ensure_sync (dev);
- // switch (vendor/product ids) { ... }
- }
- skb_pull (skb, header->hdr_len);
-
- trailer = (struct nc_trailer *)
- (skb->data + skb->len - sizeof *trailer);
- skb_trim (skb, skb->len - sizeof *trailer);
-
- if ((header->packet_len & 0x01) == 0) {
- if (skb->data [header->packet_len] != PAD_BYTE) {
- dev->stats.rx_frame_errors++;
- dbg ("bad pad");
- return 0;
- }
- skb_trim (skb, skb->len - 1);
- }
- if (skb->len != header->packet_len) {
- dev->stats.rx_frame_errors++;
- dbg ("bad packet len %d (expected %d)",
- skb->len, header->packet_len);
- nc_ensure_sync (dev);
- return 0;
- }
- if (header->packet_id != get_unaligned (&trailer->packet_id)) {
- dev->stats.rx_fifo_errors++;
- dbg ("(2+ dropped) rx packet_id mismatch 0x%x 0x%x",
- header->packet_id, trailer->packet_id);
- return 0;
- }
-#if 0
- devdbg (dev, "frame <rx h %d p %d id %d", header->hdr_len,
- header->packet_len, header->packet_id);
-#endif
- dev->frame_errors = 0;
- return 1;
-}
-
-static struct sk_buff *
-net1080_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
-{
- int padlen;
- struct sk_buff *skb2;
-
- padlen = ((skb->len + sizeof (struct nc_header)
- + sizeof (struct nc_trailer)) & 0x01) ? 0 : 1;
- if (!skb_cloned (skb)) {
- int headroom = skb_headroom (skb);
- int tailroom = skb_tailroom (skb);
-
- if ((padlen + sizeof (struct nc_trailer)) <= tailroom
- && sizeof (struct nc_header) <= headroom)
- /* There's enough head and tail room */
- return skb;
-
- if ((sizeof (struct nc_header) + padlen
- + sizeof (struct nc_trailer)) <
- (headroom + tailroom)) {
- /* There's enough total room, so just readjust */
- skb->data = memmove (skb->head
- + sizeof (struct nc_header),
- skb->data, skb->len);
- skb->tail = skb->data + skb->len;
- return skb;
- }
- }
-
- /* Create a new skb to use with the correct size */
- skb2 = skb_copy_expand (skb,
- sizeof (struct nc_header),
- sizeof (struct nc_trailer) + padlen,
- flags);
- dev_kfree_skb_any (skb);
- return skb2;
-}
-
-static const struct driver_info net1080_info = {
- .description = "NetChip TurboCONNECT",
- .flags = FLAG_FRAMING_NC,
- .reset = net1080_reset,
- .check_connect =net1080_check_connect,
- .rx_fixup = net1080_rx_fixup,
- .tx_fixup = net1080_tx_fixup,
-};