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android_kernel_xiaomi_sm8350/drivers/usb/net/usbnet.c
David Brownell 80615f8153 [PATCH] USB: usbnet driver fixes 
Updates to the usbnet driver:

 - Remove a warning when built with Zaurus support but not CDC Ethernet;
   just moves an #ifdef to cover more code

 - Two tweaks to the pseudo-MDLM support:
    * correctly handle _either_ of the two GUIDs
    * ignore a padding bit that doesn't seem necessary

 - Remove ID for one Motorola phone that uses the MDLM stuff.

It also updates the Kconfig helptext to make it clearer that the "Zaurus"
configuration option supports an increasing (sigh) family of nonstandard
peripheral protocols.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-16 21:44:25 -07:00

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/*
* USB Networking Links
* Copyright (C) 2000-2005 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
# define EVENT_LINK_RESET 4
};
// 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 *);
/* link reset handling, called from defer_kevent */
int (*link_reset)(struct usbnet *);
/* fixup rx packet (strip framing) */
int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
/* fixup tx packet (add framing) */
struct sk_buff *(*tx_fixup)(struct usbnet *dev,
struct sk_buff *skb, int flags);
// FIXME -- also an interrupt mechanism
// useful for at least PL2301/2302 and GL620USB-A
// and CDC use them to report 'is it connected' changes
/* for new devices, use the descriptor-reading code instead */
int in; /* rx endpoint */
int out; /* tx endpoint */
unsigned long data; /* Misc driver specific data */
};
// we record the state for each of our queued skbs
enum skb_state {
illegal = 0,
tx_start, tx_done,
rx_start, rx_done, rx_cleanup
};
struct skb_data { // skb->cb is one of these
struct urb *urb;
struct usbnet *dev;
enum skb_state state;
size_t length;
};
static const char driver_name [] = "usbnet";
/* use ethtool to change the level for any given device */
static int msg_level = -1;
module_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);
static void defer_kevent (struct usbnet *, int);
/* 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 %zu, 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_READ_MEDIUM_STATUS 0x1a
#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
/* AX88172 Medium Status Register values */
#define AX_MEDIUM_FULL_DUPLEX 0x02
#define AX_MEDIUM_TX_ABORT_ALLOW 0x04
#define AX_MEDIUM_FLOW_CONTROL_EN 0x10
#define AX_MCAST_FILTER_SIZE 8
#define AX_MAX_MCAST 64
#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 AX88772_MEDIUM_FULL_DUPLEX 0x0002
#define AX88772_MEDIUM_RESERVED 0x0004
#define AX88772_MEDIUM_RX_FC_ENABLE 0x0010
#define AX88772_MEDIUM_TX_FC_ENABLE 0x0020
#define AX88772_MEDIUM_PAUSE_FORMAT 0x0080
#define AX88772_MEDIUM_RX_ENABLE 0x0100
#define AX88772_MEDIUM_100MB 0x0200
#define AX88772_MEDIUM_DEFAULT \
(AX88772_MEDIUM_FULL_DUPLEX | AX88772_MEDIUM_RX_FC_ENABLE | \
AX88772_MEDIUM_TX_FC_ENABLE | AX88772_MEDIUM_100MB | \
AX88772_MEDIUM_RESERVED | AX88772_MEDIUM_RX_ENABLE )
#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 ax88172_int_data {
u16 res1;
u8 link;
u16 res2;
u8 status;
u16 res3;
} __attribute__ ((packed));
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_status(struct usbnet *dev, struct urb *urb)
{
struct ax88172_int_data *event;
int link;
if (urb->actual_length < 8)
return;
event = urb->transfer_buffer;
link = event->link & 0x01;
if (netif_carrier_ok(dev->net) != link) {
if (link) {
netif_carrier_on(dev->net);
defer_kevent (dev, EVENT_LINK_RESET );
} else
netif_carrier_off(dev->net);
devdbg(dev, "ax8817x - Link Status is: %d", link);
}
}
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 int ax88172_link_reset(struct usbnet *dev)
{
u16 lpa;
u8 mode;
mode = AX_MEDIUM_TX_ABORT_ALLOW | AX_MEDIUM_FLOW_CONTROL_EN;
lpa = ax8817x_mdio_read(dev->net, dev->mii.phy_id, MII_LPA);
if (lpa & LPA_DUPLEX)
mode |= AX_MEDIUM_FULL_DUPLEX;
ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
return 0;
}
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;
get_endpoints(dev,intf);
buf = kmalloc(ETH_ALEN, GFP_KERNEL);
if(!buf) {
ret = -ENOMEM;
goto out1;
}
/* 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 out2;
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 out2;
}
/* 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 out2;
}
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 out2;
} 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 out2;
}
/* 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, BMCR_RESET);
ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
mii_nway_restart(&dev->mii);
return 0;
out2:
kfree(buf);
out1:
return ret;
}
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;
get_endpoints(dev,intf);
buf = kmalloc(6, GFP_KERNEL);
if(!buf) {
dbg ("Cannot allocate memory for buffer");
ret = -ENOMEM;
goto out1;
}
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
0x00B0, 0, 0, buf)) < 0)
goto out2;
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 out2;
}
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 out2;
}
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 out2;
}
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 out2;
}
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 out2;
}
/* 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 out2;
}
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 out2;
}
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 out2;
}
/* 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 out2;
} 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 out2;
}
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 out2;
}
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 out2;
}
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, BMCR_RESET);
ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
ADVERTISE_ALL | ADVERTISE_CSMA);
mii_nway_restart(&dev->mii);
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, AX88772_MEDIUM_DEFAULT, 0, 0, buf)) < 0) {
dbg("Write medium mode register: %d", ret);
goto out2;
}
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 out2;
}
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 out2;
}
/* 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 out2;
}
kfree(buf);
return 0;
out2:
kfree(buf);
out1:
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 int ax88772_link_reset(struct usbnet *dev)
{
u16 lpa;
u16 mode;
mode = AX88772_MEDIUM_DEFAULT;
lpa = ax8817x_mdio_read(dev->net, dev->mii.phy_id, MII_LPA);
if ((lpa & LPA_DUPLEX) == 0)
mode &= ~AX88772_MEDIUM_FULL_DUPLEX;
if ((lpa & LPA_100) == 0)
mode &= ~AX88772_MEDIUM_100MB;
ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
return 0;
}
static const struct driver_info ax8817x_info = {
.description = "ASIX AX8817x USB 2.0 Ethernet",
.bind = ax8817x_bind,
.status = ax8817x_status,
.link_reset = ax88172_link_reset,
.reset = ax88172_link_reset,
.flags = FLAG_ETHER,
.data = 0x00130103,
};
static const struct driver_info dlink_dub_e100_info = {
.description = "DLink DUB-E100 USB Ethernet",
.bind = ax8817x_bind,
.status = ax8817x_status,
.link_reset = ax88172_link_reset,
.reset = ax88172_link_reset,
.flags = FLAG_ETHER,
.data = 0x009f9d9f,
};
static const struct driver_info netgear_fa120_info = {
.description = "Netgear FA-120 USB Ethernet",
.bind = ax8817x_bind,
.status = ax8817x_status,
.link_reset = ax88172_link_reset,
.reset = ax88172_link_reset,
.flags = FLAG_ETHER,
.data = 0x00130103,
};
static const struct driver_info hawking_uf200_info = {
.description = "Hawking UF200 USB Ethernet",
.bind = ax8817x_bind,
.status = ax8817x_status,
.link_reset = ax88172_link_reset,
.reset = ax88172_link_reset,
.flags = FLAG_ETHER,
.data = 0x001f1d1f,
};
static const struct driver_info ax88772_info = {
.description = "ASIX AX88772 USB 2.0 Ethernet",
.bind = ax88772_bind,
.status = ax8817x_status,
.link_reset = ax88772_link_reset,
.reset = ax88772_link_reset,
.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;
}
}
#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 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;
}
}
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 (and other such vendors) 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 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)
/* Some more recent products using Lineo/Belcarra code will wrongly claim
* CDC MDLM conformance. They aren't conformant: data endpoints live
* in the control interface, there's no data interface, and it's not used
* to talk to a cell phone radio. But at least we can detect these two
* pseudo-classes, rather than growing this product list with entries for
* each new nonconformant product (sigh).
*/
static const u8 safe_guid[16] = {
0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6,
0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f,
};
static const u8 blan_guid[16] = {
0x74, 0xf0, 0x3d, 0xbd, 0x1e, 0xc1, 0x44, 0x70,
0xa3, 0x67, 0x71, 0x34, 0xc9, 0xf5, 0x54, 0x37,
};
static int blan_mdlm_bind (struct usbnet *dev, struct usb_interface *intf)
{
u8 *buf = intf->cur_altsetting->extra;
int len = intf->cur_altsetting->extralen;
struct usb_cdc_mdlm_desc *desc = NULL;
struct usb_cdc_mdlm_detail_desc *detail = NULL;
while (len > 3) {
if (buf [1] != USB_DT_CS_INTERFACE)
goto next_desc;
/* use bDescriptorSubType, and just verify that we get a
* "BLAN" (or "SAFE") descriptor.
*/
switch (buf [2]) {
case USB_CDC_MDLM_TYPE:
if (desc) {
dev_dbg (&intf->dev, "extra MDLM\n");
goto bad_desc;
}
desc = (void *) buf;
if (desc->bLength != sizeof *desc) {
dev_dbg (&intf->dev, "MDLM len %u\n",
desc->bLength);
goto bad_desc;
}
/* expect bcdVersion 1.0, ignore */
if (memcmp(&desc->bGUID, blan_guid, 16)
&& memcmp(&desc->bGUID, blan_guid, 16) ) {
/* hey, this one might _really_ be MDLM! */
dev_dbg (&intf->dev, "MDLM guid\n");
goto bad_desc;
}
break;
case USB_CDC_MDLM_DETAIL_TYPE:
if (detail) {
dev_dbg (&intf->dev, "extra MDLM detail\n");
goto bad_desc;
}
detail = (void *) buf;
switch (detail->bGuidDescriptorType) {
case 0: /* "SAFE" */
if (detail->bLength != (sizeof *detail + 2))
goto bad_detail;
break;
case 1: /* "BLAN" */
if (detail->bLength != (sizeof *detail + 3))
goto bad_detail;
break;
default:
goto bad_detail;
}
/* assuming we either noticed BLAN already, or will
* find it soon, there are some data bytes here:
* - bmNetworkCapabilities (unused)
* - bmDataCapabilities (bits, see below)
* - bPad (ignored, for PADAFTER -- BLAN-only)
* bits are:
* - 0x01 -- Zaurus framing (add CRC)
* - 0x02 -- PADBEFORE (CRC includes some padding)
* - 0x04 -- PADAFTER (some padding after CRC)
* - 0x08 -- "fermat" packet mangling (for hw bugs)
* the PADBEFORE appears not to matter; we interop
* with devices that use it and those that don't.
*/
if ((detail->bDetailData[1] & ~02) != 0x01) {
/* bmDataCapabilites == 0 would be fine too,
* but framing is minidriver-coupled for now.
*/
bad_detail:
dev_dbg (&intf->dev,
"bad MDLM detail, %d %d %d\n",
detail->bLength,
detail->bDetailData[0],
detail->bDetailData[2]);
goto bad_desc;
}
break;
}
next_desc:
len -= buf [0]; /* bLength */
buf += buf [0];
}
if (!desc || !detail) {
dev_dbg (&intf->dev, "missing cdc mdlm %s%sdescriptor\n",
desc ? "" : "func ",
detail ? "" : "detail ");
goto bad_desc;
}
/* There's probably a CDC Ethernet descriptor there, but we can't
* rely on the Ethernet address it provides since not all vendors
* bother to make it unique. Likewise there's no point in tracking
* of the CDC event notifications.
*/
return get_endpoints (dev, intf);
bad_desc:
dev_info (&dev->udev->dev, "unsupported MDLM descriptors\n");
return -ENODEV;
}
static const struct driver_info bogus_mdlm_info = {
.description = "pseudo-MDLM (BLAN) device",
.flags = FLAG_FRAMING_Z,
.check_connect = always_connected,
.tx_fixup = zaurus_tx_fixup,
.bind = blan_mdlm_bind,
};
#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 (test_bit (EVENT_LINK_RESET, &dev->flags)) {
struct driver_info *info = dev->driver_info;
int retval = 0;
clear_bit (EVENT_LINK_RESET, &dev->flags);
if(info->link_reset && (retval = info->link_reset(dev)) < 0) {
devinfo(dev, "link reset failed (%d) usbnet usb-%s-%s, %s",
retval,
dev->udev->bus->bus_name, dev->udev->devpath,
info->description);
}
}
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, pm_message_t message)
{
struct usbnet *dev = usb_get_intfdata(intf);
/* accelerate emptying of the rx and queues, to avoid
* having everything error out.
*/
netif_device_detach (dev->net);
(void) unlink_urbs (dev, &dev->rxq);
(void) unlink_urbs (dev, &dev->txq);
intf->dev.power.power_state = PMSG_SUSPEND;
return 0;
}
static int usbnet_resume (struct usb_interface *intf)
{
struct usbnet *dev = usb_get_intfdata(intf);
intf->dev.power.power_state = PMSG_ON;
netif_device_attach (dev->net);
tasklet_schedule (&dev->bh);
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) PXA units have very different lies
* about their standards support: they claim to be cell phones with
* direct access to their radios. (They don't conform to CDC MDLM.)
*/
{
USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
USB_CDC_PROTO_NONE),
.driver_info = (unsigned long) &bogus_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");
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