diff options
Diffstat (limited to 'drivers/usb/net/usbnet.c')
| -rw-r--r-- | drivers/usb/net/usbnet.c | 4106 |
1 files changed, 4106 insertions, 0 deletions
diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c new file mode 100644 index 000000000000..dd8b4456ea35 --- /dev/null +++ b/drivers/usb/net/usbnet.c @@ -0,0 +1,4106 @@ +/* + * USB Networking Links + * Copyright (C) 2000-2003 by David Brownell <dbrownell@users.sourceforge.net> + * Copyright (C) 2002 Pavel Machek <pavel@ucw.cz> + * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com> + * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net> + * Copyright (c) 2002-2003 TiVo Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* + * This is a generic "USB networking" framework that works with several + * kinds of full and high speed networking devices: + * + * + USB host-to-host "network cables", used for IP-over-USB links. + * These are often used for Laplink style connectivity products. + * - AnchorChip 2720 + * - Belkin, eTEK (interops with Win32 drivers) + * - GeneSys GL620USB-A + * - NetChip 1080 (interoperates with NetChip Win32 drivers) + * - Prolific PL-2301/2302 (replaces "plusb" driver) + * - KC Technology KC2190 + * + * + Smart USB devices can support such links directly, using Internet + * standard protocols instead of proprietary host-to-device links. + * - Linux PDAs like iPaq, Yopy, and Zaurus + * - The BLOB boot loader (for diskless booting) + * - Linux "gadgets", perhaps using PXA-2xx or Net2280 controllers + * - Devices using EPSON's sample USB firmware + * - CDC-Ethernet class devices, such as many cable modems + * + * + Adapters to networks such as Ethernet. + * - AX8817X based USB 2.0 products + * + * Links to these devices can be bridged using Linux Ethernet bridging. + * With minor exceptions, these all use similar USB framing for network + * traffic, but need different protocols for control traffic. + * + * USB devices can implement their side of this protocol at the cost + * of two bulk endpoints; it's not restricted to "cable" applications. + * See the SA1110, Zaurus, or EPSON device/client support in this driver; + * slave/target drivers such as "usb-eth" (on most SA-1100 PDAs) or + * "g_ether" (in the Linux "gadget" framework) implement that behavior + * within devices. + * + * + * CHANGELOG: + * + * 13-sep-2000 experimental, new + * 10-oct-2000 usb_device_id table created. + * 28-oct-2000 misc fixes; mostly, discard more TTL-mangled rx packets. + * 01-nov-2000 usb_device_id table and probing api update by + * Adam J. Richter <adam@yggdrasil.com>. + * 18-dec-2000 (db) tx watchdog, "net1080" renaming to "usbnet", device_info + * and prolific support, isolate net1080-specific bits, cleanup. + * fix unlink_urbs oops in D3 PM resume code path. + * + * 02-feb-2001 (db) fix tx skb sharing, packet length, match_flags, ... + * 08-feb-2001 stubbed in "linuxdev", maybe the SA-1100 folk can use it; + * AnchorChips 2720 support (from spec) for testing; + * fix bit-ordering problem with ethernet multicast addr + * 19-feb-2001 Support for clearing halt conditions. SA1100 UDC support + * updates. Oleg Drokin (green@iXcelerator.com) + * 25-mar-2001 More SA-1100 updates, including workaround for ip problem + * expecting cleared skb->cb and framing change to match latest + * handhelds.org version (Oleg). Enable device IDs from the + * Win32 Belkin driver; other cleanups (db). + * 16-jul-2001 Bugfixes for uhci oops-on-unplug, Belkin support, various + * cleanups for problems not yet seen in the field. (db) + * 17-oct-2001 Handle "Advance USBNET" product, like Belkin/eTEK devices, + * from Ioannis Mavroukakis <i.mavroukakis@btinternet.com>; + * rx unlinks somehow weren't async; minor cleanup. + * 03-nov-2001 Merged GeneSys driver; original code from Jiun-Jie Huang + * <huangjj@genesyslogic.com.tw>, updated by Stanislav Brabec + * <utx@penguin.cz>. Made framing options (NetChip/GeneSys) + * tie mostly to (sub)driver info. Workaround some PL-2302 + * chips that seem to reject SET_INTERFACE requests. + * + * 06-apr-2002 Added ethtool support, based on a patch from Brad Hards. + * Level of diagnostics is more configurable; they use device + * location (usb_device->devpath) instead of address (2.5). + * For tx_fixup, memflags can't be NOIO. + * 07-may-2002 Generalize/cleanup keventd support, handling rx stalls (mostly + * for USB 2.0 TTs) and memory shortages (potential) too. (db) + * Use "locally assigned" IEEE802 address space. (Brad Hards) + * 18-oct-2002 Support for Zaurus (Pavel Machek), related cleanup (db). + * 14-dec-2002 Remove Zaurus-private crc32 code (Pavel); 2.5 oops fix, + * cleanups and stubbed PXA-250 support (db), fix for framing + * issues on Z, net1080, and gl620a (Toby Milne) + * + * 31-mar-2003 Use endpoint descriptors: high speed support, simpler sa1100 + * vs pxa25x, and CDC Ethernet. Throttle down log floods on + * disconnect; other cleanups. (db) Flush net1080 fifos + * after several sequential framing errors. (Johannes Erdfelt) + * 22-aug-2003 AX8817X support (Dave Hollis). + * 14-jun-2004 Trivial patch for AX8817X based Buffalo LUA-U2-KTX in Japan + * (Neil Bortnak) + * 03-nov-2004 Trivial patch for KC2190 (KC-190) chip. (Jonathan McDowell) + * + * 01-feb-2005 AX88772 support (Phil Chang & Dave Hollis) + *-------------------------------------------------------------------------*/ + +// #define DEBUG // error path messages, extra info +// #define VERBOSE // more; success messages + +#include <linux/config.h> +#ifdef CONFIG_USB_DEBUG +# define DEBUG +#endif +#include <linux/module.h> +#include <linux/kmod.h> +#include <linux/sched.h> +#include <linux/init.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/random.h> +#include <linux/ethtool.h> +#include <linux/workqueue.h> +#include <linux/mii.h> +#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 "03-Nov-2004" + + +/*-------------------------------------------------------------------------*/ + +/* + * 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 + +// between wakeups +#define UNLINK_TIMEOUT_MS 3 + +/*-------------------------------------------------------------------------*/ + +// 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; + struct usb_host_endpoint *status; + unsigned maxpacket; + struct timer_list delay; + + // protocol/interface state + struct net_device *net; + struct net_device_stats stats; + int msg_enable; + 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 urb *interrupt; + 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 +# define EVENT_STS_SPLIT 3 +}; + +// 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 */ + +#define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */ + + /* 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 *); + + /* for status polling */ + void (*status)(struct usbnet *, struct urb *); + + /* 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_param (msg_level, int, 0); +MODULE_PARM_DESC (msg_level, "Override default message level"); + + +#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...) \ + printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \ + +/*-------------------------------------------------------------------------*/ + +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 = NULL; + struct usb_host_endpoint *in = NULL, *out = NULL; + struct usb_host_endpoint *status = NULL; + + for (tmp = 0; tmp < intf->num_altsetting; tmp++) { + unsigned ep; + + in = out = status = NULL; + alt = intf->altsetting + tmp; + + /* take the first altsetting with in-bulk + out-bulk; + * remember any status endpoint, just in case; + * ignore other endpoints and altsetttings. + */ + for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { + struct usb_host_endpoint *e; + int intr = 0; + + e = alt->endpoint + ep; + switch (e->desc.bmAttributes) { + case USB_ENDPOINT_XFER_INT: + if (!(e->desc.bEndpointAddress & USB_DIR_IN)) + continue; + intr = 1; + /* FALLTHROUGH */ + case USB_ENDPOINT_XFER_BULK: + break; + default: + continue; + } + if (e->desc.bEndpointAddress & USB_DIR_IN) { + if (!intr && !in) + in = e; + else if (intr && !status) + status = e; + } else { + if (!out) + out = e; + } + } + if (in && out) + break; + } + if (!alt || !in || !out) + return -EINVAL; + + 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); + dev->status = status; + return 0; +} + +static void intr_complete (struct urb *urb, struct pt_regs *regs); + +static int init_status (struct usbnet *dev, struct usb_interface *intf) +{ + char *buf = NULL; + unsigned pipe = 0; + unsigned maxp; + unsigned period; + + if (!dev->driver_info->status) + return 0; + + pipe = usb_rcvintpipe (dev->udev, + dev->status->desc.bEndpointAddress + & USB_ENDPOINT_NUMBER_MASK); + maxp = usb_maxpacket (dev->udev, pipe, 0); + + /* avoid 1 msec chatter: min 8 msec poll rate */ + period = max ((int) dev->status->desc.bInterval, + (dev->udev->speed == USB_SPEED_HIGH) ? 7 : 3); + + buf = kmalloc (maxp, SLAB_KERNEL); + if (buf) { + dev->interrupt = usb_alloc_urb (0, SLAB_KERNEL); + if (!dev->interrupt) { + kfree (buf); + return -ENOMEM; + } else { + usb_fill_int_urb(dev->interrupt, dev->udev, pipe, + buf, maxp, intr_complete, dev, period); + dev_dbg(&intf->dev, + "status ep%din, %d bytes period %d\n", + usb_pipeendpoint(pipe), maxp, period); + } + } + 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; + + if (netif_msg_rx_status (dev)) + devdbg (dev, "< rx, len %d, type 0x%x", + skb->len + sizeof (struct ethhdr), skb->protocol); + memset (skb->cb, 0, sizeof (struct skb_data)); + status = netif_rx (skb); + if (status != NET_RX_SUCCESS && netif_msg_rx_err (dev)) + devdbg (dev, "netif_rx status %d", status); +} + + +#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 + + +#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 */ + + +#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_ENABLE 0x0d +#define AX_CMD_WRITE_DISABLE 0x0e +#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_CMD_SW_RESET 0x20 +#define AX_CMD_SW_PHY_STATUS 0x21 +#define AX_CMD_SW_PHY_SELECT 0x22 +#define AX88772_CMD_READ_NODE_ID 0x13 + +#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 + +#define AX_EEPROM_LEN 0x40 + +#define AX_SWRESET_CLEAR 0x00 +#define AX_SWRESET_RR 0x01 +#define AX_SWRESET_RT 0x02 +#define AX_SWRESET_PRTE 0x04 +#define AX_SWRESET_PRL 0x08 +#define AX_SWRESET_BZ 0x10 +#define AX_SWRESET_IPRL 0x20 +#define AX_SWRESET_IPPD 0x40 + +#define AX88772_IPG0_DEFAULT 0x15 +#define AX88772_IPG1_DEFAULT 0x0c +#define AX88772_IPG2_DEFAULT 0x12 + +#define AX_EEPROM_MAGIC 0xdeadbeef + +/* 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_MS); +} + +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_MS); +} + +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) { + devdbg(dev,"ax8817x_interrupt_complete() failed with %d", + urb->status); + } else { + 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_ATOMIC); + } +} + +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 = netdev_priv(net); + 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(netdev); + 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(netdev); + 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 = netdev_priv(net); + 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 = netdev_priv(net); + 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_len(struct net_device *net) +{ + return AX_EEPROM_LEN; +} + +static int ax8817x_get_eeprom(struct net_device *net, + struct ethtool_eeprom *eeprom, u8 *data) +{ + struct usbnet *dev = netdev_priv(net); + 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; + + eeprom->magic = AX_EEPROM_MAGIC; + + /* 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 0; +} + +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 = netdev_priv(net); + + return mii_ethtool_gset(&dev->mii,cmd); +} + +static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd) +{ + struct usbnet *dev = netdev_priv(net); + + 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_len = ax8817x_get_eeprom_len, + .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 = 0; + void *buf; + int i; + unsigned long gpio_bits = dev->driver_info->data; + struct ax8817x_data *data = (struct ax8817x_data *)dev->data; + + get_endpoints(dev,intf); + + if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == NULL) { + dbg ("%s: cannot allocate interrupt URB", + dev->net->name); + ret = -ENOMEM; + goto out1; + } + + if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) == NULL) { + dbg ("%s: cannot allocate memory for interrupt buffer", + dev->net->name); + ret = -ENOMEM; + goto out1; + } + 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); + + buf = kmalloc(ETH_ALEN, GFP_KERNEL); + if(!buf) { + ret = -ENOMEM; + goto out2; + } + + /* 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) + goto out3; + 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); + goto out3; + } + + /* 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); + goto out3; + } + 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); + goto out3; + } else if (ret < 2) { + /* this should always return 2 bytes */ + dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", ret); + ret = -EIO; + goto out3; + } + + /* 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 = *((u8 *)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); + goto out2; + } + + return 0; +out3: + kfree(buf); +out2: + kfree(data->int_buf); +out1: + usb_free_urb(data->int_urb); + return ret; +} + +static void ax8817x_unbind(struct usbnet *dev, struct usb_interface *intf) +{ + struct ax8817x_data *data = (struct ax8817x_data *)dev->data; + + usb_kill_urb(data->int_urb); + usb_free_urb(data->int_urb); + kfree(data->int_buf); +} + +static struct ethtool_ops ax88772_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_len = ax8817x_get_eeprom_len, + .get_eeprom = ax8817x_get_eeprom, + .get_settings = ax8817x_get_settings, + .set_settings = ax8817x_set_settings, +}; + +static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) +{ + int ret; + void *buf; + struct ax8817x_data *data = (struct ax8817x_data *)dev->data; + + get_endpoints(dev,intf); + + if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) { + dbg ("Cannot allocate interrupt URB"); + ret = -ENOMEM; + goto out1; + } + + if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) == NULL) { + dbg ("Cannot allocate memory for interrupt buffer"); + ret = -ENOMEM; + goto out1; + } + 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); + + buf = kmalloc(6, GFP_KERNEL); + if(!buf) { + dbg ("Cannot allocate memory for buffer"); + ret = -ENOMEM; + goto out2; + } + + if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS, + 0x00B0, 0, 0, buf)) < 0) + goto out3; + + msleep(5); + if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0x0001, 0, 0, buf)) < 0) { + dbg("Select PHY #1 failed: %d", ret); + goto out3; + } + + if ((ret = + ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD, 0, 0, buf)) < 0) { + dbg("Failed to power down internal PHY: %d", ret); + goto out3; + } + + msleep(150); + if ((ret = + ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR, 0, 0, buf)) < 0) { + dbg("Failed to perform software reset: %d", ret); + goto out3; + } + + msleep(150); + if ((ret = + ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) { + dbg("Failed to set Internal/External PHY reset control: %d", ret); + goto out3; + } + + msleep(150); + if ((ret = + ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0000, 0, 0, + buf)) < 0) { + dbg("Failed to reset RX_CTL: %d", ret); + goto out3; + } + + /* Get the MAC address */ + memset(buf, 0, ETH_ALEN); + if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf)) < 0) { + dbg("Failed to read MAC address: %d", ret); + goto out3; + } + memcpy(dev->net->dev_addr, buf, ETH_ALEN); + + if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, buf)) < 0) { + dbg("Enabling software MII failed: %d", ret); + goto out3; + } + + if (((ret = + ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, 0x0010, 2, 2, buf)) < 0) + || (*((u16 *)buf) != 0x003b)) { + dbg("Read PHY register 2 must be 0x3b00: %d", ret); + goto out3; + } + + /* 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 = 0xff; + dev->mii.reg_num_mask = 0xff; + + /* Get the PHY id */ + if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) { + dbg("Error reading PHY ID: %02x", ret); + goto out3; + } else if (ret < 2) { + /* this should always return 2 bytes */ + dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", + ret); + ret = -EIO; + goto out3; + } + dev->mii.phy_id = *((u8 *)buf + 1); + + if ((ret = + ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL, 0, 0, buf)) < 0) { + dbg("Set external PHY reset pin level: %d", ret); + goto out3; + } + msleep(150); + if ((ret = + ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) { + dbg("Set Internal/External PHY reset control: %d", ret); + goto out3; + } + msleep(150); + + + dev->net->set_multicast_list = ax8817x_set_multicast; + dev->net->ethtool_ops = &ax88772_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)); + mii_nway_restart(&dev->mii); + + if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, 0x0336, 0, 0, buf)) < 0) { + dbg("Write medium mode register: %d", ret); + goto out3; + } + + if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0, AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,AX88772_IPG2_DEFAULT, 0, buf)) < 0) { + dbg("Write IPG,IPG1,IPG2 failed: %d", ret); + goto out3; + } + if ((ret = + ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) { + dbg("Failed to set hardware MII: %02x", ret); + goto out3; + } + + /* Set RX_CTL to default values with 2k buffer, and enable cactus */ + if ((ret = + ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0088, 0, 0, + buf)) < 0) { + dbg("Reset RX_CTL failed: %d", ret); + goto out3; + } + + if((ret = usb_submit_urb(data->int_urb, GFP_KERNEL)) < 0) { + dbg("Failed to submit interrupt URB: %02x", ret); + goto out3; + } + + kfree(buf); + + return 0; + +out3: + kfree(buf); +out2: + kfree(data->int_buf); +out1: + usb_free_urb(data->int_urb); + + return ret; +} + +static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb) +{ + u32 *header; + char *packet; + struct sk_buff *ax_skb; + u16 size; + + header = (u32 *) skb->data; + le32_to_cpus(header); + packet = (char *)(header + 1); + + skb_pull(skb, 4); + + while (skb->len > 0) { + if ((short)(*header & 0x0000ffff) != + ~((short)((*header & 0xffff0000) >> 16))) { + devdbg(dev,"header length data is error"); + } + /* get the packet length */ + size = (u16) (*header & 0x0000ffff); + + if ((skb->len) - ((size + 1) & 0xfffe) == 0) + return 2; + if (size > ETH_FRAME_LEN) { + devdbg(dev,"invalid rx length %d", size); + return 0; + } + ax_skb = skb_clone(skb, GFP_ATOMIC); + if (ax_skb) { + ax_skb->len = size; + ax_skb->data = packet; + ax_skb->tail = packet + size; + skb_return(dev, ax_skb); + } else { + return 0; + } + + skb_pull(skb, (size + 1) & 0xfffe); + + if (skb->len == 0) + break; + + header = (u32 *) skb->data; + le32_to_cpus(header); + packet = (char *)(header + 1); + skb_pull(skb, 4); + } + + if (skb->len < 0) { + devdbg(dev,"invalid rx length %d", skb->len); + return 0; + } + return 1; +} + +static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff *skb, + int flags) +{ + int padlen; + int headroom = skb_headroom(skb); + int tailroom = skb_tailroom(skb); + u32 *packet_len; + u32 *padbytes_ptr; + + padlen = ((skb->len + 4) % 512) ? 0 : 4; + + if ((!skb_cloned(skb)) + && ((headroom + tailroom) >= (4 + padlen))) { + if ((headroom < 4) || (tailroom < padlen)) { + skb->data = memmove(skb->head + 4, skb->data, skb->len); + skb->tail = skb->data + skb->len; + } + } else { + struct sk_buff *skb2; + skb2 = skb_copy_expand(skb, 4, padlen, flags); + dev_kfree_skb_any(skb); + skb = skb2; + if (!skb) + return NULL; + } + + packet_len = (u32 *) skb_push(skb, 4); + + packet_len = (u32 *) skb->data; + *packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4); + + if ((skb->len % 512) == 0) { + padbytes_ptr = (u32 *) skb->tail; + *padbytes_ptr = 0xffff0000; + skb_put(skb, padlen); + } + return skb; +} + +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, +}; + +static const struct driver_info ax88772_info = { + .description = "ASIX AX88772 USB 2.0 Ethernet", + .bind = ax88772_bind, + .unbind = ax8817x_unbind, + .flags = FLAG_ETHER | FLAG_FRAMING_AX, + .rx_fixup = ax88772_rx_fixup, + .tx_fixup = ax88772_tx_fixup, + .data = 0x00130103, +}; + +#endif /* CONFIG_USB_AX8817X */ + + + +#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 */ + + + +/*------------------------------------------------------------------------- + * + * 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 + +#include <linux/usb_cdc.h> + +struct cdc_state { + struct usb_cdc_header_desc *header; + struct usb_cdc_union_desc *u; + struct usb_cdc_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 USB_CDC_HEADER_TYPE: + 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 USB_CDC_UNION_TYPE: + 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 USB_CDC_ETHERNET_TYPE: + 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 = le16_to_cpup ( + &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; + } + + /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */ + dev->status = NULL; + if (info->control->cur_altsetting->desc.bNumEndpoints == 1) { + struct usb_endpoint_descriptor *desc; + + dev->status = &info->control->cur_altsetting->endpoint [0]; + desc = &dev->status->desc; + if (desc->bmAttributes != USB_ENDPOINT_XFER_INT + || !(desc->bEndpointAddress & USB_DIR_IN) + || (le16_to_cpu(desc->wMaxPacketSize) + < sizeof (struct usb_cdc_notification)) + || !desc->bInterval) { + dev_dbg (&intf->dev, "bad notification endpoint\n"); + dev->status = NULL; + } + } + if (rndis && !dev->status) { + dev_dbg (&intf->dev, "missing RNDIS status endpoint\n"); + usb_set_intfdata(info->data, NULL); + usb_driver_release_interface (&usbnet_driver, info->data); + return -ENODEV; + } + 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; + } +} + + +static void dumpspeed (struct usbnet *dev, __le32 *speeds) +{ + if (netif_msg_timer (dev)) + devinfo (dev, "link speeds: %u kbps up, %u kbps down", + __le32_to_cpu(speeds[0]) / 1000, + __le32_to_cpu(speeds[1]) / 1000); +} + +static void cdc_status (struct usbnet *dev, struct urb *urb) +{ + struct usb_cdc_notification *event; + + if (urb->actual_length < sizeof *event) + return; + + /* SPEED_CHANGE can get split into two 8-byte packets */ + if (test_and_clear_bit (EVENT_STS_SPLIT, &dev->flags)) { + dumpspeed (dev, (__le32 *) urb->transfer_buffer); + return; + } + + event = urb->transfer_buffer; + switch (event->bNotificationType) { + case USB_CDC_NOTIFY_NETWORK_CONNECTION: + if (netif_msg_timer (dev)) + devdbg (dev, "CDC: carrier %s", + event->wValue ? "on" : "off"); + if (event->wValue) + netif_carrier_on(dev->net); + else + netif_carrier_off(dev->net); + break; + case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */ + if (netif_msg_timer (dev)) + devdbg (dev, "CDC: speed change (len %d)", + urb->actual_length); + if (urb->actual_length != (sizeof *event + 8)) + set_bit (EVENT_STS_SPLIT, &dev->flags); + else + dumpspeed (dev, (__le32 *) &event[1]); + break; + // case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: /* RNDIS; or unsolicited */ + default: + deverr (dev, "CDC: unexpected notification %02x!", + event->bNotificationType); + break; + } +} + +#endif /* NEED_GENERIC_CDC */ + + +#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 usb_cdc_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, + .status = cdc_status, +}; + +#endif /* CONFIG_USB_CDCETHER */ + + + +#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 */ + + +#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 GENELINK_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_MS); + 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_kill_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 */ + + + +#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: + __le16 hdr_len; // sizeof nc_header (LE, all) + __le16 packet_len; // payload size (including ethhdr) + __le16 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 { + __le16 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_MS); + 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_MS); +} + +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) +{ + if (!netif_msg_link (dev)) + return; + 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 + ); +} + +/*-------------------------------------------------------------------------*/ + +/* + * 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) +{ + if (!netif_msg_link (dev)) + return; + 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 + ); +} + +/*-------------------------------------------------------------------------*/ + +/* + * 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) +{ + if (netif_msg_link (dev)) + 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)); +} + +/*-------------------------------------------------------------------------*/ + +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 (netif_msg_link (dev)) + 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; + } + + if (netif_msg_rx_err (dev)) + 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; + u16 hdr_len, packet_len; + + 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; + hdr_len = le16_to_cpup (&header->hdr_len); + packet_len = le16_to_cpup (&header->packet_len); + if (FRAMED_SIZE (packet_len) > MAX_PACKET) { + dev->stats.rx_frame_errors++; + dbg ("packet too big, %d", packet_len); + nc_ensure_sync (dev); + return 0; + } else if (hdr_len < MIN_HEADER) { + dev->stats.rx_frame_errors++; + dbg ("header too short, %d", hdr_len); + nc_ensure_sync (dev); + return 0; + } else if (hdr_len > MIN_HEADER) { + // out of band data for us? + dbg ("header OOB, %d bytes", hdr_len - MIN_HEADER); + nc_ensure_sync (dev); + // switch (vendor/product ids) { ... } + } + skb_pull (skb, hdr_len); + + trailer = (struct nc_trailer *) + (skb->data + skb->len - sizeof *trailer); + skb_trim (skb, skb->len - sizeof *trailer); + + if ((packet_len & 0x01) == 0) { + if (skb->data [packet_len] != PAD_BYTE) { + dev->stats.rx_frame_errors++; + dbg ("bad pad"); + return 0; + } + skb_trim (skb, skb->len - 1); + } + if (skb->len != packet_len) { + dev->stats.rx_frame_errors++; + dbg ("bad packet len %d (expected %d)", + skb->len, 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", + le16_to_cpu (header->packet_id), + le16_to_cpu (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, +}; + +#endif /* CONFIG_USB_NET1080 */ + + + +#ifdef CONFIG_USB_PL2301 +#define HAVE_HARDWARE + +/*------------------------------------------------------------------------- + * + * Prolific PL-2301/PL-2302 driver ... http://www.prolifictech.com + * + * The protocol and handshaking used here should be bug-compatible + * with the Linux 2.2 "plusb" driver, by Deti Fliegl. + * + *-------------------------------------------------------------------------*/ + +/* + * Bits 0-4 can be used for software handshaking; they're set from + * one end, cleared from the other, "read" with the interrupt byte. + */ +#define PL_S_EN (1<<7) /* (feature only) suspend enable */ +/* reserved bit -- rx ready (6) ? */ +#define PL_TX_READY (1<<5) /* (interrupt only) transmit ready */ +#define PL_RESET_OUT (1<<4) /* reset output pipe */ +#define PL_RESET_IN (1<<3) /* reset input pipe */ +#define PL_TX_C (1<<2) /* transmission complete */ +#define PL_TX_REQ (1<<1) /* transmission received */ +#define PL_PEER_E (1<<0) /* peer exists */ + +static inline int +pl_vendor_req (struct usbnet *dev, u8 req, u8 val, u8 index) +{ + return usb_control_msg (dev->udev, + usb_rcvctrlpipe (dev->udev, 0), + req, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + val, index, + NULL, 0, + CONTROL_TIMEOUT_MS); +} + +static inline int +pl_clear_QuickLink_features (struct usbnet *dev, int val) +{ + return pl_vendor_req (dev, 1, (u8) val, 0); +} + +static inline int +pl_set_QuickLink_features (struct usbnet *dev, int val) +{ + return pl_vendor_req (dev, 3, (u8) val, 0); +} + +/*-------------------------------------------------------------------------*/ + +static int pl_reset (struct usbnet *dev) +{ + /* some units seem to need this reset, others reject it utterly. + * FIXME be more like "naplink" or windows drivers. + */ + (void) pl_set_QuickLink_features (dev, + PL_S_EN|PL_RESET_OUT|PL_RESET_IN|PL_PEER_E); + return 0; +} + +static const struct driver_info prolific_info = { + .description = "Prolific PL-2301/PL-2302", + .flags = FLAG_NO_SETINT, + /* some PL-2302 versions seem to fail usb_set_interface() */ + .reset = pl_reset, +}; + +#endif /* CONFIG_USB_PL2301 */ + + +#ifdef CONFIG_USB_KC2190 +#define HAVE_HARDWARE +static const struct driver_info kc2190_info = { + .description = "KC Technology KC-190", +}; +#endif /* CONFIG_USB_KC2190 */ + + +#ifdef CONFIG_USB_ARMLINUX +#define HAVE_HARDWARE + +/*------------------------------------------------------------------------- + * + * Intel's SA-1100 chip integrates basic USB support, and is used + * in PDAs like some iPaqs, the Yopy, some Zaurus models, and more. + * When they run Linux, arch/arm/mach-sa1100/usb-eth.c may be used to + * network using minimal USB framing data. + * + * This describes the driver currently in standard ARM Linux kernels. + * The Zaurus uses a different driver (see later). + * + * PXA25x and PXA210 use XScale cores (ARM v5TE) with better USB support + * and different USB endpoint numbering than the SA1100 devices. The + * mach-pxa/usb-eth.c driver re-uses the device ids from mach-sa1100 + * so we rely on the endpoint descriptors. + * + *-------------------------------------------------------------------------*/ + +static const struct driver_info linuxdev_info = { + .description = "Linux Device", + .check_connect = always_connected, +}; + +static const struct driver_info yopy_info = { + .description = "Yopy", + .check_connect = always_connected, +}; + +static const struct driver_info blob_info = { + .description = "Boot Loader OBject", + .check_connect = always_connected, +}; + +#endif /* CONFIG_USB_ARMLINUX */ + + +#ifdef CONFIG_USB_ZAURUS +#define HAVE_HARDWARE + +#include <linux/crc32.h> + +/*------------------------------------------------------------------------- + * + * Zaurus is also a SA-1110 based PDA, but one using a different driver + * (and framing) for its USB slave/gadget controller than the case above. + * + * For the current version of that driver, the main way that framing is + * nonstandard (also from perspective of the CDC ethernet model!) is a + * crc32, added to help detect when some sa1100 usb-to-memory DMA errata + * haven't been fully worked around. Also, all Zaurii use the same + * default Ethernet address. + * + * PXA based models use the same framing, and also can't implement + * set_interface properly. + * + * All known Zaurii lie about their standards conformance. Most lie by + * saying they support CDC Ethernet. Some lie and say they support CDC + * MDLM (as if for access to cell phone modems). Someone, please beat + * on Sharp for a while with a cluestick. + * + *-------------------------------------------------------------------------*/ + +static struct sk_buff * +zaurus_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags) +{ + int padlen; + struct sk_buff *skb2; + + padlen = 2; + if (!skb_cloned (skb)) { + int tailroom = skb_tailroom (skb); + if ((padlen + 4) <= tailroom) + goto done; + } + skb2 = skb_copy_expand (skb, 0, 4 + padlen, flags); + dev_kfree_skb_any (skb); + skb = skb2; + if (skb) { + u32 fcs; +done: + fcs = crc32_le (~0, skb->data, skb->len); + fcs = ~fcs; + + *skb_put (skb, 1) = fcs & 0xff; + *skb_put (skb, 1) = (fcs>> 8) & 0xff; + *skb_put (skb, 1) = (fcs>>16) & 0xff; + *skb_put (skb, 1) = (fcs>>24) & 0xff; + } + return skb; +} + +static const struct driver_info zaurus_sl5x00_info = { + .description = "Sharp Zaurus SL-5x00", + .flags = FLAG_FRAMING_Z, + .check_connect = always_connected, + .bind = generic_cdc_bind, + .unbind = cdc_unbind, + .tx_fixup = zaurus_tx_fixup, +}; +#define ZAURUS_STRONGARM_INFO ((unsigned long)&zaurus_sl5x00_info) + +static const struct driver_info zaurus_pxa_info = { + .description = "Sharp Zaurus, PXA-2xx based", + .flags = FLAG_FRAMING_Z, + .check_connect = always_connected, + .bind = generic_cdc_bind, + .unbind = cdc_unbind, + .tx_fixup = zaurus_tx_fixup, +}; +#define ZAURUS_PXA_INFO ((unsigned long)&zaurus_pxa_info) + +static const struct driver_info zaurus_pxa_mdlm_info = { + .description = "Sharp Zaurus, PXA-255 based", + .flags = FLAG_FRAMING_Z, + .check_connect = always_connected, + .tx_fixup = zaurus_tx_fixup, +}; + +static const struct driver_info olympus_mxl_info = { + .description = "Olympus R1000", + .flags = FLAG_FRAMING_Z, + .check_connect = always_connected, + .bind = generic_cdc_bind, + .unbind = cdc_unbind, + .tx_fixup = zaurus_tx_fixup, +}; +#define OLYMPUS_MXL_INFO ((unsigned long)&olympus_mxl_info) + +#else + +/* blacklist all those devices */ +#define ZAURUS_STRONGARM_INFO 0 +#define ZAURUS_PXA_INFO 0 +#define OLYMPUS_MXL_INFO 0 + +#endif + + +/*------------------------------------------------------------------------- + * + * Network Device Driver (peer link to "Host Device", from USB host) + * + *-------------------------------------------------------------------------*/ + +static int usbnet_change_mtu (struct net_device *net, int new_mtu) +{ + struct usbnet *dev = netdev_priv(net); + + if (new_mtu <= MIN_PACKET || new_mtu > MAX_PACKET) + return -EINVAL; +#ifdef CONFIG_USB_NET1080 + if (((dev->driver_info->flags) & FLAG_FRAMING_NC)) { + if (FRAMED_SIZE (new_mtu) > MAX_PACKET) + return -EINVAL; + } +#endif +#ifdef CONFIG_USB_GENESYS + if (((dev->driver_info->flags) & FLAG_FRAMING_GL) + && new_mtu > GL_MAX_PACKET_LEN) + return -EINVAL; +#endif + // no second zero-length packet read wanted after mtu-sized packets + if (((new_mtu + sizeof (struct ethhdr)) % dev->maxpacket) == 0) + return -EDOM; + net->mtu = new_mtu; + return 0; +} + +/*-------------------------------------------------------------------------*/ + +static struct net_device_stats *usbnet_get_stats (struct net_device *net) +{ + struct usbnet *dev = netdev_priv(net); + return &dev->stats; +} + +/*-------------------------------------------------------------------------*/ + +/* some LK 2.4 HCDs oopsed if we freed or resubmitted urbs from + * completion callbacks. 2.5 should have fixed those bugs... + */ + +static void defer_bh (struct usbnet *dev, struct sk_buff *skb) +{ + struct sk_buff_head *list = skb->list; + unsigned long flags; + + spin_lock_irqsave (&list->lock, flags); + __skb_unlink (skb, list); + spin_unlock (&list->lock); + spin_lock (&dev->done.lock); + __skb_queue_tail (&dev->done, skb); + if (dev->done.qlen == 1) + tasklet_schedule (&dev->bh); + spin_unlock_irqrestore (&dev->done.lock, flags); +} + +/* some work can't be done in tasklets, so we use keventd + * + * NOTE: annoying asymmetry: if it's active, schedule_work() fails, + * but tasklet_schedule() doesn't. hope the failure is rare. + */ +static void defer_kevent (struct usbnet *dev, int work) +{ + set_bit (work, &dev->flags); + if (!schedule_work (&dev->kevent)) + deverr (dev, "kevent %d may have been dropped", work); + else + devdbg (dev, "kevent %d scheduled", work); +} + +/*-------------------------------------------------------------------------*/ + +static void rx_complete (struct urb *urb, struct pt_regs *regs); + +static void rx_submit (struct usbnet *dev, struct urb *urb, int flags) +{ + struct sk_buff *skb; + struct skb_data *entry; + int retval = 0; + unsigned long lockflags; + size_t size; + +#ifdef CONFIG_USB_NET1080 + if (dev->driver_info->flags & FLAG_FRAMING_NC) + size = FRAMED_SIZE (dev->net->mtu); + else +#endif +#ifdef CONFIG_USB_GENESYS + if (dev->driver_info->flags & FLAG_FRAMING_GL) + size = GL_RCV_BUF_SIZE; + else +#endif +#ifdef CONFIG_USB_ZAURUS + if (dev->driver_info->flags & FLAG_FRAMING_Z) + size = 6 + (sizeof (struct ethhdr) + dev->net->mtu); + else +#endif +#ifdef CONFIG_USB_RNDIS + if (dev->driver_info->flags & FLAG_FRAMING_RN) + size = RNDIS_MAX_TRANSFER; + else +#endif +#ifdef CONFIG_USB_AX8817X + if (dev->driver_info->flags & FLAG_FRAMING_AX) + size = 2048; + else +#endif + size = (sizeof (struct ethhdr) + dev->net->mtu); + + if ((skb = alloc_skb (size + NET_IP_ALIGN, flags)) == NULL) { + if (netif_msg_rx_err (dev)) + devdbg (dev, "no rx skb"); + defer_kevent (dev, EVENT_RX_MEMORY); + usb_free_urb (urb); + return; + } + skb_reserve (skb, NET_IP_ALIGN); + + entry = (struct skb_data *) skb->cb; + entry->urb = urb; + entry->dev = dev; + entry->state = rx_start; + entry->length = 0; + + usb_fill_bulk_urb (urb, dev->udev, dev->in, + skb->data, size, rx_complete, skb); + urb->transfer_flags |= URB_ASYNC_UNLINK; + + spin_lock_irqsave (&dev->rxq.lock, lockflags); + + if (netif_running (dev->net) + && netif_device_present (dev->net) + && !test_bit (EVENT_RX_HALT, &dev->flags)) { + switch (retval = usb_submit_urb (urb, GFP_ATOMIC)){ + case -EPIPE: + defer_kevent (dev, EVENT_RX_HALT); + break; + case -ENOMEM: + defer_kevent (dev, EVENT_RX_MEMORY); + break; + case -ENODEV: + if (netif_msg_ifdown (dev)) + devdbg (dev, "device gone"); + netif_device_detach (dev->net); + break; + default: + if (netif_msg_rx_err (dev)) + devdbg (dev, "rx submit, %d", retval); + tasklet_schedule (&dev->bh); + break; + case 0: + __skb_queue_tail (&dev->rxq, skb); + } + } else { + if (netif_msg_ifdown (dev)) + devdbg (dev, "rx: stopped"); + retval = -ENOLINK; + } + spin_unlock_irqrestore (&dev->rxq.lock, lockflags); + if (retval) { + dev_kfree_skb_any (skb); + usb_free_urb (urb); + } +} + + +/*-------------------------------------------------------------------------*/ + +static inline void rx_process (struct usbnet *dev, struct sk_buff *skb) +{ + if (dev->driver_info->rx_fixup + && !dev->driver_info->rx_fixup (dev, skb)) + goto error; + // else network stack removes extra byte if we forced a short packet + + if (skb->len) + skb_return (dev, skb); + else { + if (netif_msg_rx_err (dev)) + devdbg (dev, "drop"); +error: + dev->stats.rx_errors++; + skb_queue_tail (&dev->done, skb); + } +} + +/*-------------------------------------------------------------------------*/ + +static void rx_complete (struct urb *urb, struct pt_regs *regs) +{ + struct sk_buff *skb = (struct sk_buff *) urb->context; + struct skb_data *entry = (struct skb_data *) skb->cb; + struct usbnet *dev = entry->dev; + int urb_status = urb->status; + + skb_put (skb, urb->actual_length); + entry->state = rx_done; + entry->urb = NULL; + + switch (urb_status) { + // success + case 0: + if (MIN_PACKET > skb->len || skb->len > MAX_PACKET) { + entry->state = rx_cleanup; + dev->stats.rx_errors++; + dev->stats.rx_length_errors++; + if (netif_msg_rx_err (dev)) + devdbg (dev, "rx length %d", skb->len); + } + break; + + // stalls need manual reset. this is rare ... except that + // when going through USB 2.0 TTs, unplug appears this way. + // we avoid the highspeed version of the ETIMEOUT/EILSEQ + // storm, recovering as needed. + case -EPIPE: + dev->stats.rx_errors++; + defer_kevent (dev, EVENT_RX_HALT); + // FALLTHROUGH + + // software-driven interface shutdown + case -ECONNRESET: // async unlink + case -ESHUTDOWN: // hardware gone + if (netif_msg_ifdown (dev)) + devdbg (dev, "rx shutdown, code %d", urb_status); + goto block; + + // we get controller i/o faults during khubd disconnect() delays. + // throttle down resubmits, to avoid log floods; just temporarily, + // so we still recover when the fault isn't a khubd delay. + case -EPROTO: // ehci + case -ETIMEDOUT: // ohci + case -EILSEQ: // uhci + dev->stats.rx_errors++; + if (!timer_pending (&dev->delay)) { + mod_timer (&dev->delay, jiffies + THROTTLE_JIFFIES); + if (netif_msg_link (dev)) + devdbg (dev, "rx throttle %d", urb_status); + } +block: + entry->state = rx_cleanup; + entry->urb = urb; + urb = NULL; + break; + + // data overrun ... flush fifo? + case -EOVERFLOW: + dev->stats.rx_over_errors++; + // FALLTHROUGH + + default: + entry->state = rx_cleanup; + dev->stats.rx_errors++; + if (netif_msg_rx_err (dev)) + devdbg (dev, "rx status %d", urb_status); + break; + } + + defer_bh (dev, skb); + + if (urb) { + if (netif_running (dev->net) + && !test_bit (EVENT_RX_HALT, &dev->flags)) { + rx_submit (dev, urb, GFP_ATOMIC); + return; + } + usb_free_urb (urb); + } + if (netif_msg_rx_err (dev)) + devdbg (dev, "no read resubmitted"); +} + +static void intr_complete (struct urb *urb, struct pt_regs *regs) +{ + struct usbnet *dev = urb->context; + int status = urb->status; + + switch (status) { + /* success */ + case 0: + dev->driver_info->status(dev, urb); + break; + + /* software-driven interface shutdown */ + case -ENOENT: // urb killed + case -ESHUTDOWN: // hardware gone + if (netif_msg_ifdown (dev)) + devdbg (dev, "intr shutdown, code %d", status); + return; + + /* NOTE: not throttling like RX/TX, since this endpoint + * already polls infrequently + */ + default: + devdbg (dev, "intr status %d", status); + break; + } + + if (!netif_running (dev->net)) + return; + + memset(urb->transfer_buffer, 0, urb->transfer_buffer_length); + status = usb_submit_urb (urb, GFP_ATOMIC); + if (status != 0 && netif_msg_timer (dev)) + deverr(dev, "intr resubmit --> %d", status); +} + +/*-------------------------------------------------------------------------*/ + +// unlink pending rx/tx; completion handlers do all other cleanup + +static int unlink_urbs (struct usbnet *dev, struct sk_buff_head *q) +{ + unsigned long flags; + struct sk_buff *skb, *skbnext; + int count = 0; + + spin_lock_irqsave (&q->lock, flags); + for (skb = q->next; skb != (struct sk_buff *) q; skb = skbnext) { + struct skb_data *entry; + struct urb *urb; + int retval; + + entry = (struct skb_data *) skb->cb; + urb = entry->urb; + skbnext = skb->next; + + // during some PM-driven resume scenarios, + // these (async) unlinks complete immediately + retval = usb_unlink_urb (urb); + if (retval != -EINPROGRESS && retval != 0) + devdbg (dev, "unlink urb err, %d", retval); + else + count++; + } + spin_unlock_irqrestore (&q->lock, flags); + return count; +} + + +/*-------------------------------------------------------------------------*/ + +// precondition: never called in_interrupt + +static int usbnet_stop (struct net_device *net) +{ + struct usbnet *dev = netdev_priv(net); + int temp; + DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup); + DECLARE_WAITQUEUE (wait, current); + + netif_stop_queue (net); + + if (netif_msg_ifdown (dev)) + devinfo (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld", + dev->stats.rx_packets, dev->stats.tx_packets, + dev->stats.rx_errors, dev->stats.tx_errors + ); + + // ensure there are no more active urbs + add_wait_queue (&unlink_wakeup, &wait); + dev->wait = &unlink_wakeup; + temp = unlink_urbs (dev, &dev->txq) + unlink_urbs (dev, &dev->rxq); + + // maybe wait for deletions to finish. + while (skb_queue_len (&dev->rxq) + && skb_queue_len (&dev->txq) + && skb_queue_len (&dev->done)) { + msleep(UNLINK_TIMEOUT_MS); + if (netif_msg_ifdown (dev)) + devdbg (dev, "waited for %d urb completions", temp); + } + dev->wait = NULL; + remove_wait_queue (&unlink_wakeup, &wait); + + usb_kill_urb(dev->interrupt); + + /* deferred work (task, timer, softirq) must also stop. + * can't flush_scheduled_work() until we drop rtnl (later), + * else workers could deadlock; so make workers a NOP. + */ + dev->flags = 0; + del_timer_sync (&dev->delay); + tasklet_kill (&dev->bh); + + return 0; +} + +/*-------------------------------------------------------------------------*/ + +// posts reads, and enables write queuing + +// precondition: never called in_interrupt + +static int usbnet_open (struct net_device *net) +{ + struct usbnet *dev = netdev_priv(net); + int retval = 0; + struct driver_info *info = dev->driver_info; + + // put into "known safe" state + if (info->reset && (retval = info->reset (dev)) < 0) { + if (netif_msg_ifup (dev)) + devinfo (dev, + "open reset fail (%d) usbnet usb-%s-%s, %s", + retval, + dev->udev->bus->bus_name, dev->udev->devpath, + info->description); + goto done; + } + + // insist peer be connected + if (info->check_connect && (retval = info->check_connect (dev)) < 0) { + if (netif_msg_ifup (dev)) + devdbg (dev, "can't open; %d", retval); + goto done; + } + + /* start any status interrupt transfer */ + if (dev->interrupt) { + retval = usb_submit_urb (dev->interrupt, GFP_KERNEL); + if (retval < 0) { + if (netif_msg_ifup (dev)) + deverr (dev, "intr submit %d", retval); + goto done; + } + } + + netif_start_queue (net); + if (netif_msg_ifup (dev)) { + char *framing; + + if (dev->driver_info->flags & FLAG_FRAMING_NC) + framing = "NetChip"; + else if (dev->driver_info->flags & FLAG_FRAMING_GL) + framing = "GeneSys"; + else if (dev->driver_info->flags & FLAG_FRAMING_Z) + framing = "Zaurus"; + else if (dev->driver_info->flags & FLAG_FRAMING_RN) + framing = "RNDIS"; + else if (dev->driver_info->flags & FLAG_FRAMING_AX) + framing = "ASIX"; + else + framing = "simple"; + + devinfo (dev, "open: enable queueing " + "(rx %d, tx %d) mtu %d %s framing", + RX_QLEN (dev), TX_QLEN (dev), dev->net->mtu, + framing); + } + + // delay posting reads until we're fully open + tasklet_schedule (&dev->bh); +done: + return retval; +} + +/*-------------------------------------------------------------------------*/ + +static void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info) +{ + struct usbnet *dev = netdev_priv(net); + + strncpy (info->driver, driver_name, sizeof info->driver); + strncpy (info->version, DRIVER_VERSION, sizeof info->version); + strncpy (info->fw_version, dev->driver_info->description, + sizeof info->fw_version); + usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info); +} + +static u32 usbnet_get_link (struct net_device *net) +{ + struct usbnet *dev = netdev_priv(net); + + /* If a check_connect is defined, return it's results */ + if (dev->driver_info->check_connect) + return dev->driver_info->check_connect (dev) == 0; + + /* Otherwise, we're up to avoid breaking scripts */ + return 1; +} + +static u32 usbnet_get_msglevel (struct net_device *net) +{ + struct usbnet *dev = netdev_priv(net); + + return dev->msg_enable; +} + +static void usbnet_set_msglevel (struct net_device *net, u32 level) +{ + struct usbnet *dev = netdev_priv(net); + + dev->msg_enable = level; +} + +static int usbnet_ioctl (struct net_device *net, struct ifreq *rq, int cmd) +{ +#ifdef NEED_MII + { + struct usbnet *dev = netdev_priv(net); + + if (dev->mii.mdio_read != NULL && dev->mii.mdio_write != NULL) + return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); + } +#endif + return -EOPNOTSUPP; +} + +/*-------------------------------------------------------------------------*/ + +/* work that cannot be done in interrupt context uses keventd. + * + * NOTE: with 2.5 we could do more of this using completion callbacks, + * especially now that control transfers can be queued. + */ +static void +kevent (void *data) +{ + struct usbnet *dev = data; + int status; + + /* usb_clear_halt() needs a thread context */ + if (test_bit (EVENT_TX_HALT, &dev->flags)) { + unlink_urbs (dev, &dev->txq); + status = usb_clear_halt (dev->udev, dev->out); + if (status < 0 && status != -EPIPE) { + if (netif_msg_tx_err (dev)) + deverr (dev, "can't clear tx halt, status %d", + status); + } else { + clear_bit (EVENT_TX_HALT, &dev->flags); + netif_wake_queue (dev->net); + } + } + if (test_bit (EVENT_RX_HALT, &dev->flags)) { + unlink_urbs (dev, &dev->rxq); + status = usb_clear_halt (dev->udev, dev->in); + if (status < 0 && status != -EPIPE) { + if (netif_msg_rx_err (dev)) + deverr (dev, "can't clear rx halt, status %d", + status); + } else { + clear_bit (EVENT_RX_HALT, &dev->flags); + tasklet_schedule (&dev->bh); + } + } + + /* tasklet could resubmit itself forever if memory is tight */ + if (test_bit (EVENT_RX_MEMORY, &dev->flags)) { + struct urb *urb = NULL; + + if (netif_running (dev->net)) + urb = usb_alloc_urb (0, GFP_KERNEL); + else + clear_bit (EVENT_RX_MEMORY, &dev->flags); + if (urb != NULL) { + clear_bit (EVENT_RX_MEMORY, &dev->flags); + rx_submit (dev, urb, GFP_KERNEL); + tasklet_schedule (&dev->bh); + } + } + + if (dev->flags) + devdbg (dev, "kevent done, flags = 0x%lx", + dev->flags); +} + +/*-------------------------------------------------------------------------*/ + +static void tx_complete (struct urb *urb, struct pt_regs *regs) +{ + struct sk_buff *skb = (struct sk_buff *) urb->context; + struct skb_data *entry = (struct skb_data *) skb->cb; + struct usbnet *dev = entry->dev; + + if (urb->status == 0) { + dev->stats.tx_packets++; + dev->stats.tx_bytes += entry->length; + } else { + dev->stats.tx_errors++; + + switch (urb->status) { + case -EPIPE: + defer_kevent (dev, EVENT_TX_HALT); + break; + + /* software-driven interface shutdown */ + case -ECONNRESET: // async unlink + case -ESHUTDOWN: // hardware gone + break; + + // like rx, tx gets controller i/o faults during khubd delays + // and so it uses the same throttling mechanism. + case -EPROTO: // ehci + case -ETIMEDOUT: // ohci + case -EILSEQ: // uhci + if (!timer_pending (&dev->delay)) { + mod_timer (&dev->delay, + jiffies + THROTTLE_JIFFIES); + if (netif_msg_link (dev)) + devdbg (dev, "tx throttle %d", + urb->status); + } + netif_stop_queue (dev->net); + break; + default: + if (netif_msg_tx_err (dev)) + devdbg (dev, "tx err %d", entry->urb->status); + break; + } + } + + urb->dev = NULL; + entry->state = tx_done; + defer_bh (dev, skb); +} + +/*-------------------------------------------------------------------------*/ + +static void usbnet_tx_timeout (struct net_device *net) +{ + struct usbnet *dev = netdev_priv(net); + + unlink_urbs (dev, &dev->txq); + tasklet_schedule (&dev->bh); + + // FIXME: device recovery -- reset? +} + +/*-------------------------------------------------------------------------*/ + +static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net) +{ + struct usbnet *dev = netdev_priv(net); + int length; + int retval = NET_XMIT_SUCCESS; + struct urb *urb = NULL; + struct skb_data *entry; + struct driver_info *info = dev->driver_info; + unsigned long flags; +#ifdef CONFIG_USB_NET1080 + struct nc_header *header = NULL; + struct nc_trailer *trailer = NULL; +#endif /* CONFIG_USB_NET1080 */ + + // some devices want funky USB-level framing, for + // win32 driver (usually) and/or hardware quirks + if (info->tx_fixup) { + skb = info->tx_fixup (dev, skb, GFP_ATOMIC); + if (!skb) { + if (netif_msg_tx_err (dev)) + devdbg (dev, "can't tx_fixup skb"); + goto drop; + } + } + length = skb->len; + + if (!(urb = usb_alloc_urb (0, GFP_ATOMIC))) { + if (netif_msg_tx_err (dev)) + devdbg (dev, "no urb"); + goto drop; + } + + entry = (struct skb_data *) skb->cb; + entry->urb = urb; + entry->dev = dev; + entry->state = tx_start; + entry->length = length; + + // FIXME: reorganize a bit, so that fixup() fills out NetChip + // framing too. (Packet ID update needs the spinlock...) + // [ BETTER: we already own net->xmit_lock, that's enough ] + +#ifdef CONFIG_USB_NET1080 + if (info->flags & FLAG_FRAMING_NC) { + header = (struct nc_header *) skb_push (skb, sizeof *header); + header->hdr_len = cpu_to_le16 (sizeof (*header)); + header->packet_len = cpu_to_le16 (length); + if (!((skb->len + sizeof *trailer) & 0x01)) + *skb_put (skb, 1) = PAD_BYTE; + trailer = (struct nc_trailer *) skb_put (skb, sizeof *trailer); + } +#endif /* CONFIG_USB_NET1080 */ + + usb_fill_bulk_urb (urb, dev->udev, dev->out, + skb->data, skb->len, tx_complete, skb); + urb->transfer_flags |= URB_ASYNC_UNLINK; + + /* don't assume the hardware handles USB_ZERO_PACKET + * NOTE: strictly conforming cdc-ether devices should expect + * the ZLP here, but ignore the one-byte packet. + * + * FIXME zero that byte, if it doesn't require a new skb. + */ + if ((length % dev->maxpacket) == 0) + urb->transfer_buffer_length++; + + spin_lock_irqsave (&dev->txq.lock, flags); + +#ifdef CONFIG_USB_NET1080 + if (info->flags & FLAG_FRAMING_NC) { + header->packet_id = cpu_to_le16 ((u16)dev->dev_packet_id++); + put_unaligned (header->packet_id, &trailer->packet_id); +#if 0 + devdbg (dev, "frame >tx h %d p %d id %d", + header->hdr_len, header->packet_len, + header->packet_id); +#endif + } +#endif /* CONFIG_USB_NET1080 */ + + switch ((retval = usb_submit_urb (urb, GFP_ATOMIC))) { + case -EPIPE: + netif_stop_queue (net); + defer_kevent (dev, EVENT_TX_HALT); + break; + default: + if (netif_msg_tx_err (dev)) + devdbg (dev, "tx: submit urb err %d", retval); + break; + case 0: + net->trans_start = jiffies; + __skb_queue_tail (&dev->txq, skb); + if (dev->txq.qlen >= TX_QLEN (dev)) + netif_stop_queue (net); + } + spin_unlock_irqrestore (&dev->txq.lock, flags); + + if (retval) { + if (netif_msg_tx_err (dev)) + devdbg (dev, "drop, code %d", retval); +drop: + retval = NET_XMIT_SUCCESS; + dev->stats.tx_dropped++; + if (skb) + dev_kfree_skb_any (skb); + usb_free_urb (urb); + } else if (netif_msg_tx_queued (dev)) { + devdbg (dev, "> tx, len %d, type 0x%x", + length, skb->protocol); + } + return retval; +} + + +/*-------------------------------------------------------------------------*/ + +// tasklet (work deferred from completions, in_irq) or timer + +static void usbnet_bh (unsigned long param) +{ + struct usbnet *dev = (struct usbnet *) param; + struct sk_buff *skb; + struct skb_data *entry; + + while ((skb = skb_dequeue (&dev->done))) { + entry = (struct skb_data *) skb->cb; + switch (entry->state) { + case rx_done: + entry->state = rx_cleanup; + rx_process (dev, skb); + continue; + case tx_done: + case rx_cleanup: + usb_free_urb (entry->urb); + dev_kfree_skb (skb); + continue; + default: + devdbg (dev, "bogus skb state %d", entry->state); + } + } + + // waiting for all pending urbs to complete? + if (dev->wait) { + if ((dev->txq.qlen + dev->rxq.qlen + dev->done.qlen) == 0) { + wake_up (dev->wait); + } + + // or are we maybe short a few urbs? + } else if (netif_running (dev->net) + && netif_device_present (dev->net) + && !timer_pending (&dev->delay) + && !test_bit (EVENT_RX_HALT, &dev->flags)) { + int temp = dev->rxq.qlen; + int qlen = RX_QLEN (dev); + + if (temp < qlen) { + struct urb *urb; + int i; + + // don't refill the queue all at once + for (i = 0; i < 10 && dev->rxq.qlen < qlen; i++) { + urb = usb_alloc_urb (0, GFP_ATOMIC); + if (urb != NULL) + rx_submit (dev, urb, GFP_ATOMIC); + } + if (temp != dev->rxq.qlen && netif_msg_link (dev)) + devdbg (dev, "rxqlen %d --> %d", + temp, dev->rxq.qlen); + if (dev->rxq.qlen < qlen) + tasklet_schedule (&dev->bh); + } + if (dev->txq.qlen < TX_QLEN (dev)) + netif_wake_queue (dev->net); + } +} + + + +/*------------------------------------------------------------------------- + * + * USB Device Driver support + * + *-------------------------------------------------------------------------*/ + +// precondition: never called in_interrupt + +static void usbnet_disconnect (struct usb_interface *intf) +{ + struct usbnet *dev; + struct usb_device *xdev; + struct net_device *net; + + dev = usb_get_intfdata(intf); + usb_set_intfdata(intf, NULL); + if (!dev) + return; + + xdev = interface_to_usbdev (intf); + + if (netif_msg_probe (dev)) + devinfo (dev, "unregister usbnet usb-%s-%s, %s", + xdev->bus->bus_name, xdev->devpath, + dev->driver_info->description); + + net = dev->net; + unregister_netdev (net); + + /* we don't hold rtnl here ... */ + flush_scheduled_work (); + + if (dev->driver_info->unbind) + dev->driver_info->unbind (dev, intf); + + free_netdev(net); + usb_put_dev (xdev); +} + + +/*-------------------------------------------------------------------------*/ + +static struct ethtool_ops usbnet_ethtool_ops; + +// precondition: never called in_interrupt + +static int +usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod) +{ + struct usbnet *dev; + struct net_device *net; + struct usb_host_interface *interface; + struct driver_info *info; + struct usb_device *xdev; + int status; + + info = (struct driver_info *) prod->driver_info; + if (!info) { + dev_dbg (&udev->dev, "blacklisted by %s\n", driver_name); + return -ENODEV; + } + xdev = interface_to_usbdev (udev); + interface = udev->cur_altsetting; + + usb_get_dev (xdev); + + status = -ENOMEM; + + // set up our own records + net = alloc_etherdev(sizeof(*dev)); + if (!net) { + dbg ("can't kmalloc dev"); + goto out; + } + + dev = netdev_priv(net); + dev->udev = xdev; + dev->driver_info = info; + dev->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV + | NETIF_MSG_PROBE | NETIF_MSG_LINK); + skb_queue_head_init (&dev->rxq); + skb_queue_head_init (&dev->txq); + skb_queue_head_init (&dev->done); + dev->bh.func = usbnet_bh; + dev->bh.data = (unsigned long) dev; + INIT_WORK (&dev->kevent, kevent, dev); + dev->delay.function = usbnet_bh; + dev->delay.data = (unsigned long) dev; + init_timer (&dev->delay); + + SET_MODULE_OWNER (net); + dev->net = net; + strcpy (net->name, "usb%d"); + memcpy (net->dev_addr, node_id, sizeof node_id); + +#if 0 +// dma_supported() is deeply broken on almost all architectures + // possible with some EHCI controllers + if (dma_supported (&udev->dev, DMA_64BIT_MASK)) + net->features |= NETIF_F_HIGHDMA; +#endif + + net->change_mtu = usbnet_change_mtu; + net->get_stats = usbnet_get_stats; + net->hard_start_xmit = usbnet_start_xmit; + net->open = usbnet_open; + net->stop = usbnet_stop; + net->watchdog_timeo = TX_TIMEOUT_JIFFIES; + net->tx_timeout = usbnet_tx_timeout; + net->do_ioctl = usbnet_ioctl; + net->ethtool_ops = &usbnet_ethtool_ops; + + // allow device-specific bind/init procedures + // NOTE net->name still not usable ... + if (info->bind) { + status = info->bind (dev, udev); + // heuristic: "usb%d" for links we know are two-host, + // else "eth%d" when there's reasonable doubt. userspace + // can rename the link if it knows better. + if ((dev->driver_info->flags & FLAG_ETHER) != 0 + && (net->dev_addr [0] & 0x02) == 0) + strcpy (net->name, "eth%d"); + } else if (!info->in || info->out) + status = get_endpoints (dev, udev); + else { + dev->in = usb_rcvbulkpipe (xdev, info->in); + dev->out = usb_sndbulkpipe (xdev, info->out); + if (!(info->flags & FLAG_NO_SETINT)) + status = usb_set_interface (xdev, + interface->desc.bInterfaceNumber, + interface->desc.bAlternateSetting); + else + status = 0; + + } + + if (status == 0 && dev->status) + status = init_status (dev, udev); + if (status < 0) + goto out1; + + dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1); + + SET_NETDEV_DEV(net, &udev->dev); + status = register_netdev (net); + if (status) + goto out3; + if (netif_msg_probe (dev)) + devinfo (dev, "register usbnet at usb-%s-%s, %s, " + "%02x:%02x:%02x:%02x:%02x:%02x", + xdev->bus->bus_name, xdev->devpath, + dev->driver_info->description, + net->dev_addr [0], net->dev_addr [1], + net->dev_addr [2], net->dev_addr [3], + net->dev_addr [4], net->dev_addr [5]); + + // ok, it's ready to go. + usb_set_intfdata (udev, dev); + + // start as if the link is up + netif_device_attach (net); + + return 0; + +out3: + if (info->unbind) + info->unbind (dev, udev); +out1: + free_netdev(net); +out: + usb_put_dev(xdev); + return status; +} + +/*-------------------------------------------------------------------------*/ + +#ifdef CONFIG_PM + +static int usbnet_suspend (struct usb_interface *intf, u32 state) +{ + struct usbnet *dev = usb_get_intfdata(intf); + + netif_device_detach (dev->net); + return 0; +} + +static int usbnet_resume (struct usb_interface *intf) +{ + struct usbnet *dev = usb_get_intfdata(intf); + + netif_device_attach (dev->net); + return 0; +} + +#else /* !CONFIG_PM */ + +#define usbnet_suspend NULL +#define usbnet_resume NULL + +#endif /* CONFIG_PM */ + +/*-------------------------------------------------------------------------*/ + +#ifndef HAVE_HARDWARE +#error You need to configure some hardware for this driver +#endif + +/* + * chip vendor names won't normally be on the cables, and + * may not be on the device. + */ + +static const struct usb_device_id products [] = { + +#ifdef CONFIG_USB_ALI_M5632 +{ + USB_DEVICE (0x0402, 0x5632), // ALi defaults + .driver_info = (unsigned long) &ali_m5632_info, +}, +#endif + +#ifdef CONFIG_USB_AN2720 +{ + USB_DEVICE (0x0547, 0x2720), // AnchorChips defaults + .driver_info = (unsigned long) &an2720_info, +}, { + USB_DEVICE (0x0547, 0x2727), // Xircom PGUNET + .driver_info = (unsigned long) &an2720_info, +}, +#endif + +#ifdef CONFIG_USB_BELKIN +{ + USB_DEVICE (0x050d, 0x0004), // Belkin + .driver_info = (unsigned long) &belkin_info, +}, { + USB_DEVICE (0x056c, 0x8100), // eTEK + .driver_info = (unsigned long) &belkin_info, +}, { + USB_DEVICE (0x0525, 0x9901), // Advance USBNET (eTEK) + .driver_info = (unsigned long) &belkin_info, +}, +#endif + +#ifdef CONFIG_USB_AX8817X +{ + // Linksys USB200M + USB_DEVICE (0x077b, 0x2226), + .driver_info = (unsigned long) &ax8817x_info, +}, { + // Netgear FA120 + USB_DEVICE (0x0846, 0x1040), + .driver_info = (unsigned long) &netgear_fa120_info, +}, { + // DLink DUB-E100 + USB_DEVICE (0x2001, 0x1a00), + .driver_info = (unsigned long) &dlink_dub_e100_info, +}, { + // Intellinet, ST Lab USB Ethernet + USB_DEVICE (0x0b95, 0x1720), + .driver_info = (unsigned long) &ax8817x_info, +}, { + // Hawking UF200, TrendNet TU2-ET100 + USB_DEVICE (0x07b8, 0x420a), + .driver_info = (unsigned long) &hawking_uf200_info, +}, { + // Billionton Systems, USB2AR + USB_DEVICE (0x08dd, 0x90ff), + .driver_info = (unsigned long) &ax8817x_info, +}, { + // ATEN UC210T + USB_DEVICE (0x0557, 0x2009), + .driver_info = (unsigned long) &ax8817x_info, +}, { + // Buffalo LUA-U2-KTX + USB_DEVICE (0x0411, 0x003d), + .driver_info = (unsigned long) &ax8817x_info, +}, { + // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter" + USB_DEVICE (0x6189, 0x182d), + .driver_info = (unsigned long) &ax8817x_info, +}, { + // corega FEther USB2-TX + USB_DEVICE (0x07aa, 0x0017), + .driver_info = (unsigned long) &ax8817x_info, +}, { + // Surecom EP-1427X-2 + USB_DEVICE (0x1189, 0x0893), + .driver_info = (unsigned long) &ax8817x_info, +}, { + // goodway corp usb gwusb2e + USB_DEVICE (0x1631, 0x6200), + .driver_info = (unsigned long) &ax8817x_info, +}, { + // ASIX AX88772 10/100 + USB_DEVICE (0x0b95, 0x7720), + .driver_info = (unsigned long) &ax88772_info, +}, +#endif + +#ifdef CONFIG_USB_EPSON2888 +{ + USB_DEVICE (0x0525, 0x2888), // EPSON USB client + .driver_info = (unsigned long) &epson2888_info, +}, +#endif + +#ifdef CONFIG_USB_GENESYS +{ + USB_DEVICE (0x05e3, 0x0502), // GL620USB-A + .driver_info = (unsigned long) &genelink_info, +}, + /* NOT: USB_DEVICE (0x05e3, 0x0501), // GL620USB + * that's half duplex, not currently supported + */ +#endif + +#ifdef CONFIG_USB_NET1080 +{ + USB_DEVICE (0x0525, 0x1080), // NetChip ref design + .driver_info = (unsigned long) &net1080_info, +}, { + USB_DEVICE (0x06D0, 0x0622), // Laplink Gold + .driver_info = (unsigned long) &net1080_info, +}, +#endif + +#ifdef CONFIG_USB_PL2301 +{ + USB_DEVICE (0x067b, 0x0000), // PL-2301 + .driver_info = (unsigned long) &prolific_info, +}, { + USB_DEVICE (0x067b, 0x0001), // PL-2302 + .driver_info = (unsigned long) &prolific_info, +}, +#endif + +#ifdef CONFIG_USB_KC2190 +{ + USB_DEVICE (0x050f, 0x0190), // KC-190 + .driver_info = (unsigned long) &kc2190_info, +}, +#endif + +#ifdef CONFIG_USB_RNDIS +{ + /* RNDIS is MSFT's un-official variant of CDC ACM */ + USB_INTERFACE_INFO (USB_CLASS_COMM, 2 /* ACM */, 0x0ff), + .driver_info = (unsigned long) &rndis_info, +}, +#endif + +#ifdef CONFIG_USB_ARMLINUX +/* + * SA-1100 using standard ARM Linux kernels, or compatible. + * Often used when talking to Linux PDAs (iPaq, Yopy, etc). + * The sa-1100 "usb-eth" driver handles the basic framing. + * + * PXA25x or PXA210 ... these use a "usb-eth" driver much like + * the sa1100 one, but hardware uses different endpoint numbers. + * + * Or the Linux "Ethernet" gadget on hardware that can't talk + * CDC Ethernet (e.g., no altsettings), in either of two modes: + * - acting just like the old "usb-eth" firmware, though + * the implementation is different + * - supporting RNDIS as the first/default configuration for + * MS-Windows interop; Linux needs to use the other config + */ +{ + // 1183 = 0x049F, both used as hex values? + // Compaq "Itsy" vendor/product id + USB_DEVICE (0x049F, 0x505A), // usb-eth, or compatible + .driver_info = (unsigned long) &linuxdev_info, +}, { + USB_DEVICE (0x0E7E, 0x1001), // G.Mate "Yopy" + .driver_info = (unsigned long) &yopy_info, +}, { + USB_DEVICE (0x8086, 0x07d3), // "blob" bootloader + .driver_info = (unsigned long) &blob_info, +}, { + // Linux Ethernet/RNDIS gadget on pxa210/25x/26x + // e.g. Gumstix, current OpenZaurus, ... + USB_DEVICE_VER (0x0525, 0xa4a2, 0x0203, 0x0203), + .driver_info = (unsigned long) &linuxdev_info, +}, +#endif + +#if defined(CONFIG_USB_ZAURUS) || defined(CONFIG_USB_CDCETHER) +/* + * SA-1100 based Sharp Zaurus ("collie"), or compatible. + * Same idea as above, but different framing. + * + * PXA-2xx based models are also lying-about-cdc. + * Some models don't even tell the same lies ... + * + * NOTE: OpenZaurus versions with 2.6 kernels won't use these entries, + * unlike the older ones with 2.4 "embedix" kernels. + * + * NOTE: These entries do double-duty, serving as blacklist entries + * whenever Zaurus support isn't enabled, but CDC Ethernet is. + */ +#define ZAURUS_MASTER_INTERFACE \ + .bInterfaceClass = USB_CLASS_COMM, \ + .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \ + .bInterfaceProtocol = USB_CDC_PROTO_NONE +{ + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x04DD, + .idProduct = 0x8004, + ZAURUS_MASTER_INTERFACE, + .driver_info = ZAURUS_STRONGARM_INFO, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x04DD, + .idProduct = 0x8005, /* A-300 */ + ZAURUS_MASTER_INTERFACE, + .driver_info = ZAURUS_PXA_INFO, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x04DD, + .idProduct = 0x8006, /* B-500/SL-5600 */ + ZAURUS_MASTER_INTERFACE, + .driver_info = ZAURUS_PXA_INFO, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x04DD, + .idProduct = 0x8007, /* C-700 */ + ZAURUS_MASTER_INTERFACE, + .driver_info = ZAURUS_PXA_INFO, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x04DD, + .idProduct = 0x9031, /* C-750 C-760 */ + ZAURUS_MASTER_INTERFACE, + .driver_info = ZAURUS_PXA_INFO, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x04DD, + .idProduct = 0x9032, /* SL-6000 */ + ZAURUS_MASTER_INTERFACE, + .driver_info = ZAURUS_PXA_INFO, +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x04DD, + /* reported with some C860 units */ + .idProduct = 0x9050, /* C-860 */ + ZAURUS_MASTER_INTERFACE, + .driver_info = ZAURUS_PXA_INFO, +#ifdef CONFIG_USB_ZAURUS + /* at least some (reports vary) C-860 units have very different + * lies about their standards support. + */ +}, { + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x04DD, + /* reported with some C860 units */ + .idProduct = 0x9031, /* C-860 */ + .bInterfaceClass = USB_CLASS_COMM, + .bInterfaceSubClass = USB_CDC_SUBCLASS_MDLM, + .bInterfaceProtocol = USB_CDC_PROTO_NONE, + .driver_info = (unsigned long) &zaurus_pxa_mdlm_info, +#endif +}, + +/* Olympus has some models with a Zaurus-compatible option. + * R-1000 uses a FreeScale i.MXL cpu (ARMv4T) + */ +{ + .match_flags = USB_DEVICE_ID_MATCH_INT_INFO + | USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x07B4, + .idProduct = 0x0F02, /* R-1000 */ + ZAURUS_MASTER_INTERFACE, + .driver_info = OLYMPUS_MXL_INFO, +}, +#endif + +#ifdef CONFIG_USB_CDCETHER +{ + /* CDC Ether uses two interfaces, not necessarily consecutive. + * We match the main interface, ignoring the optional device + * class so we could handle devices that aren't exclusively + * CDC ether. + * + * NOTE: this match must come AFTER entries working around + * bugs/quirks in a given product (like Zaurus, above). + */ + USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET, + USB_CDC_PROTO_NONE), + .driver_info = (unsigned long) &cdc_info, +}, +#endif + + { }, // END +}; +MODULE_DEVICE_TABLE (usb, products); + +static struct usb_driver usbnet_driver = { + .owner = THIS_MODULE, + .name = driver_name, + .id_table = products, + .probe = usbnet_probe, + .disconnect = usbnet_disconnect, + .suspend = usbnet_suspend, + .resume = usbnet_resume, +}; + +/* Default ethtool_ops assigned. Devices can override in their bind() routine */ +static struct ethtool_ops usbnet_ethtool_ops = { + .get_drvinfo = usbnet_get_drvinfo, + .get_link = usbnet_get_link, + .get_msglevel = usbnet_get_msglevel, + .set_msglevel = usbnet_set_msglevel, +}; + +/*-------------------------------------------------------------------------*/ + +static int __init usbnet_init (void) +{ + // compiler should optimize these out + BUG_ON (sizeof (((struct sk_buff *)0)->cb) + < sizeof (struct skb_data)); +#ifdef CONFIG_USB_CDCETHER + BUG_ON ((sizeof (((struct usbnet *)0)->data) + < sizeof (struct cdc_state))); +#endif + + random_ether_addr(node_id); + + return usb_register(&usbnet_driver); +} +module_init (usbnet_init); + +static void __exit usbnet_exit (void) +{ + usb_deregister (&usbnet_driver); +} +module_exit (usbnet_exit); + +MODULE_AUTHOR ("David Brownell <dbrownell@users.sourceforge.net>"); +MODULE_DESCRIPTION ("USB Host-to-Host Link Drivers (numerous vendors)"); +MODULE_LICENSE ("GPL"); |