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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 22:20:36 (GMT)
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 22:20:36 (GMT)
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/usb/net/usbnet.c
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/usb/net/usbnet.c')
-rw-r--r--drivers/usb/net/usbnet.c4106
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 0000000..dd8b445
--- /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");
generated by cgit v0.10.2 at 2024-11-11 12:57:37 (GMT)