Commit 33f0554d authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman

Merge kroah.com:/home/greg/linux/BK/bleed-2.5

into kroah.com:/home/greg/linux/BK/gregkh-2.5
parents c24564a2 5204f427
......@@ -6,31 +6,32 @@
<edition>02 June 2003</edition>
<legalnotice>
<para>Permission is granted to copy, distribute, and/or modify
this document under the terms of the GNU Free Documentation
License, version 1.2, or any later version published by the
Free Software Foundation; with the Invariant Sections being
the "GNU Free Documentation License",
no Front-Cover Texts,
and
no Back-Cover Texts.
</para>
<para>This documentation 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 Free Documentation License for more details.
</para>
<para>Note that certain sections of this document are merged
into Linux kernel source code.
That content is the bulk of
<xref linkend="core" /> and
<xref linkend="utils" />,
where the "GNU Free Documentation License" is identified
as an alternate licence for its documentation.
</para>
<para>
This documentation 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.
</para>
<para>
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.
</para>
<para>
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
</para>
<para>
For more details see the file COPYING in the source
distribution of Linux.
</para>
</legalnotice>
<copyright>
<year>2003</year>
......@@ -325,9 +326,10 @@ the "chunky" nature of USB messages: I/O requests are in terms
of one or more "packets", and packet boundaries are visible to drivers.
Compared to RS-232 serial protocols, USB resembles
synchronous protocols like HDLC
(N bytes per frame, multipoint addressing from the host)
(N bytes per frame, multipoint addressing, host as the primary
station and devices as secondary stations)
more than asynchronous ones
(tty style, like 8 bytes, no parity, one stop bit).
(tty style: 8 data bits per frame, no parity, one stop bit).
So for example the controller drivers won't buffer
two single byte writes into a single two-byte USB IN packet,
although gadget drivers may do so when they implement
......@@ -528,438 +530,6 @@ over time, as this driver framework evolves.
</chapter>
<appendix id="gfdl">
<title>GNU Free Documentation License</title>
<subtitle>Version 1.2, November 2002</subtitle>
<blockquote id="fsf-copyright">
<para>Copyright (C) 2000,2001,2002 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.</para>
</blockquote>
<sect1 id="gfdl-0"><title>PREAMBLE</title>
<para>The purpose of this License is to make a manual, textbook, or
other functional and useful document "free" in the sense of freedom: to
assure everyone the effective freedom to copy and redistribute it, with
or without modifying it, either commercially or noncommercially.
Secondarily, this License preserves for the author and publisher a way
to get credit for their work, while not being considered responsible for
modifications made by others.</para>
<para>This License is a kind of "copyleft", which means that derivative
works of the document must themselves be free in the same sense. It
complements the GNU General Public License, which is a copyleft license
designed for free software.</para>
<para>We have designed this License in order to use it for manuals for
free software, because free software needs free documentation: a free
program should come with manuals providing the same freedoms that the
software does. But this License is not limited to software manuals; it
can be used for any textual work, regardless of subject matter or
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principally for works whose purpose is instruction or reference.</para>
</sect1>
<sect1 id="gfdl-1"><title>APPLICABILITY AND DEFINITIONS</title>
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<para id="gfdl-inv-sect">The "Invariant Sections" are certain Secondary
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<sect1 id="gfdl-5"><title>COMBINING DOCUMENTS</title>
<para>You may combine the Document with other documents released under
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<sect1 id="gfdl-6"><title>COLLECTIONS OF DOCUMENTS</title>
<para>You may make a collection consisting of the Document and other
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<sect1 id="gfdl-7"><title>AGGREGATION WITH INDEPENDENT WORKS</title>
<para>A compilation of the Document or its derivatives with other
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copyright resulting from the compilation is not used to limit the legal
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<sect1 id="gfdl-8"><title>TRANSLATION</title>
<para>Translation is considered a kind of modification, so you may
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<sect1 id="gfdl-9"><title>TERMINATION</title>
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</sect1>
<sect1 id="gfdl-10"><title>FUTURE REVISIONS OF THIS LICENSE</title>
<para>The Free Software Foundation may publish new, revised versions of
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</sect1>
<sect1 id="gfdl-addendum"><title>ADDENDUM: How to use this License for
your documents</title>
<para>To use this License in a document you have written, include a copy
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<blockquote id="copyright-sample"><para>
Copyright (c) YEAR YOUR NAME.
Permission is granted to copy, distribute and/or modify this document
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or any later version published by the Free Software Foundation;
with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled "GNU
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</para></blockquote>
<para>If you have Invariant Sections, Front-Cover Texts and Back-Cover
Texts, replace the "with...Texts." line with this:</para>
<blockquote id="inv-cover-sample"><para>
with the Invariant Sections being LIST THEIR TITLES, with the
Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.
</para></blockquote>
<para>If you have Invariant Sections without Cover Texts, or some other
combination of the three, merge those two alternatives to suit the
situation.</para>
<para>If your document contains nontrivial examples of program code, we
recommend releasing these examples in parallel under your choice of free
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their use in free software.</para>
</sect1>
</appendix>
</book>
<!--
vim:syntax=sgml:sw=4
......
......@@ -513,7 +513,7 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
}
#ifdef CONFIG_PROC_FS
#define MAX_OUTPUT (PAGE_SIZE * 16)
#define MAX_OUTPUT (64 * 1024)
static struct proc_dir_entry *uhci_proc_root = NULL;
......
// Portions of this file taken from
// Petko Manolov - Petkan (petkan@dce.bg)
// from his driver pegasus.c
/*
* 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
*/
#include <linux/types.h>
#include <linux/jiffies.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/usb.h>
#include <linux/module.h>
#include "cdc-ether.h"
static const char *version = __FILE__ ": v0.98.5 22 Sep 2001 Brad Hards and another";
/* Take any CDC device, and sort it out in probe() */
static struct usb_device_id CDCEther_ids[] = {
{ USB_DEVICE_INFO(USB_CLASS_COMM, 0, 0) },
{ } /* Terminating null entry */
};
/*
* module parameter that provides an alternate upper limit on the
* number of multicast filters we use, with a default to use all
* the filters available to us. Note that the actual number used
* is the lesser of this parameter and the number returned in the
* descriptor for the particular device. See Table 41 of the CDC
* spec for more info on the descriptor limit.
*/
static int multicast_filter_limit = 32767;
//////////////////////////////////////////////////////////////////////////////
// Callback routines from USB device /////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
static void read_bulk_callback( struct urb *urb, struct pt_regs *regs )
{
ether_dev_t *ether_dev = urb->context;
struct net_device *net;
int count = urb->actual_length, res;
struct sk_buff *skb;
// Sanity check
if ( !ether_dev || !(ether_dev->flags & CDC_ETHER_RUNNING) ) {
dbg("BULK IN callback but driver is not active!");
return;
}
net = ether_dev->net;
if ( !netif_device_present(net) ) {
// Somebody killed our network interface...
return;
}
if ( ether_dev->flags & CDC_ETHER_RX_BUSY ) {
// Are we already trying to receive a frame???
ether_dev->stats.rx_errors++;
dbg("ether_dev Rx busy");
return;
}
// We are busy, leave us alone!
ether_dev->flags |= CDC_ETHER_RX_BUSY;
switch ( urb->status ) {
case 0:
break;
case -ETIMEDOUT:
dbg( "no repsonse in BULK IN" );
ether_dev->flags &= ~CDC_ETHER_RX_BUSY;
break;
default:
dbg( "%s: RX status %d", net->name, urb->status );
goto goon;
}
// Check to make sure we got some data...
if ( !count ) {
// We got no data!!!
goto goon;
}
// Tell the kernel we want some memory
if ( !(skb = dev_alloc_skb(count)) ) {
// We got no receive buffer.
goto goon;
}
// Here's where it came from
skb->dev = net;
// Now we copy it over
eth_copy_and_sum(skb, ether_dev->rx_buff, count, 0);
// Not sure
skb_put(skb, count);
// Not sure here either
skb->protocol = eth_type_trans(skb, net);
// Ship it off to the kernel
netif_rx(skb);
// update out statistics
ether_dev->stats.rx_packets++;
ether_dev->stats.rx_bytes += count;
goon:
// Prep the USB to wait for another frame
usb_fill_bulk_urb( ether_dev->rx_urb, ether_dev->usb,
usb_rcvbulkpipe(ether_dev->usb, ether_dev->data_ep_in),
ether_dev->rx_buff, ether_dev->wMaxSegmentSize,
read_bulk_callback, ether_dev );
// Give this to the USB subsystem so it can tell us
// when more data arrives.
if ( (res = usb_submit_urb(ether_dev->rx_urb, GFP_ATOMIC)) ) {
warn("%s failed submint rx_urb %d", __FUNCTION__, res);
}
// We are no longer busy, show us the frames!!!
ether_dev->flags &= ~CDC_ETHER_RX_BUSY;
}
static void write_bulk_callback( struct urb *urb, struct pt_regs *regs )
{
ether_dev_t *ether_dev = urb->context;
// Sanity check
if ( !ether_dev || !(ether_dev->flags & CDC_ETHER_RUNNING) ) {
// We are insane!!!
err( "write_bulk_callback: device not running" );
return;
}
// Do we still have a valid kernel network device?
if ( !netif_device_present(ether_dev->net) ) {
// Someone killed our network interface.
err( "write_bulk_callback: net device not present" );
return;
}
// Hmm... What on Earth could have happened???
if ( urb->status ) {
info("%s: TX status %d", ether_dev->net->name, urb->status);
}
// Update the network interface and tell it we are
// ready for another frame
ether_dev->net->trans_start = jiffies;
netif_wake_queue( ether_dev->net );
}
//static void intr_callback( struct urb *urb )
//{
// ether_dev_t *ether_dev = urb->context;
// struct net_device *net;
// __u8 *d;
//
// if ( !ether_dev )
// return;
//
// switch ( urb->status ) {
// case 0:
// break;
// case -ENOENT:
// return;
// default:
// info("intr status %d", urb->status);
// }
//
// d = urb->transfer_buffer;
// net = ether_dev->net;
// if ( d[0] & 0xfc ) {
// ether_dev->stats.tx_errors++;
// if ( d[0] & TX_UNDERRUN )
// ether_dev->stats.tx_fifo_errors++;
// if ( d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT) )
// ether_dev->stats.tx_aborted_errors++;
// if ( d[0] & LATE_COL )
// ether_dev->stats.tx_window_errors++;
// if ( d[0] & (NO_CARRIER | LOSS_CARRIER) )
// ether_dev->stats.tx_carrier_errors++;
// }
//}
//////////////////////////////////////////////////////////////////////////////
// Routines for turning net traffic on and off on the USB side ///////////////
//////////////////////////////////////////////////////////////////////////////
static inline int enable_net_traffic( ether_dev_t *ether_dev )
{
struct usb_device *usb = ether_dev->usb;
// Here would be the time to set the data interface to the configuration where
// it has two endpoints that use a protocol we can understand.
if (usb_set_interface( usb,
ether_dev->data_bInterfaceNumber,
ether_dev->data_bAlternateSetting_with_traffic ) ) {
err("usb_set_interface() failed" );
err("Attempted to set interface %d", ether_dev->data_bInterfaceNumber);
err("To alternate setting %d", ether_dev->data_bAlternateSetting_with_traffic);
return -1;
}
return 0;
}
static inline void disable_net_traffic( ether_dev_t *ether_dev )
{
// The thing to do is to set the data interface to the alternate setting that has
// no endpoints. This is what the spec suggests.
if (ether_dev->data_interface_altset_num_without_traffic >= 0 ) {
if (usb_set_interface( ether_dev->usb,
ether_dev->data_bInterfaceNumber,
ether_dev->data_bAlternateSetting_without_traffic ) ) {
err("usb_set_interface() failed");
}
} else {
// Some devices just may not support this...
warn("No way to disable net traffic");
}
}
//////////////////////////////////////////////////////////////////////////////
// Callback routines for kernel Ethernet Device //////////////////////////////
//////////////////////////////////////////////////////////////////////////////
static void CDCEther_tx_timeout( struct net_device *net )
{
ether_dev_t *ether_dev = net->priv;
// Sanity check
if ( !ether_dev ) {
// Seems to be a case of insanity here
return;
}
// Tell syslog we are hosed.
warn("%s: Tx timed out.", net->name);
// Tear the waiting frame off the list
ether_dev->tx_urb->transfer_flags |= URB_ASYNC_UNLINK;
usb_unlink_urb( ether_dev->tx_urb );
// Update statistics
ether_dev->stats.tx_errors++;
}
static int CDCEther_start_xmit( struct sk_buff *skb, struct net_device *net )
{
ether_dev_t *ether_dev = net->priv;
int res;
// Tell the kernel, "No more frames 'til we are done
// with this one.'
netif_stop_queue( net );
// Copy it from kernel memory to OUR memory
memcpy(ether_dev->tx_buff, skb->data, skb->len);
// Fill in the URB for shipping it out.
usb_fill_bulk_urb( ether_dev->tx_urb, ether_dev->usb,
usb_sndbulkpipe(ether_dev->usb, ether_dev->data_ep_out),
ether_dev->tx_buff, ether_dev->wMaxSegmentSize,
write_bulk_callback, ether_dev );
// Tell the URB how much it will be transporting today
ether_dev->tx_urb->transfer_buffer_length = skb->len;
/* Deal with the zero length problem, I hope */
ether_dev->tx_urb->transfer_flags |= URB_ZERO_PACKET;
// Send the URB on its merry way.
if ((res = usb_submit_urb(ether_dev->tx_urb, GFP_ATOMIC))) {
// Hmm... It didn't go. Tell someone...
warn("failed tx_urb %d", res);
// update some stats...
ether_dev->stats.tx_errors++;
// and tell the kernel to give us another.
// Maybe we'll get it right next time.
netif_start_queue( net );
} else {
// Okay, it went out.
// Update statistics
ether_dev->stats.tx_packets++;
ether_dev->stats.tx_bytes += skb->len;
// And tell the kernel when the last transmit occurred.
net->trans_start = jiffies;
}
// We are done with the kernel's memory
dev_kfree_skb(skb);
// We are done here.
return 0;
}
static struct net_device_stats *CDCEther_netdev_stats( struct net_device *net )
{
// Easy enough!
return &((ether_dev_t *)net->priv)->stats;
}
static int CDCEther_open(struct net_device *net)
{
ether_dev_t *ether_dev = (ether_dev_t *)net->priv;
int res;
// Turn on the USB and let the packets flow!!!
if ( (res = enable_net_traffic( ether_dev )) ) {
err("%s can't enable_net_traffic() - %d", __FUNCTION__, res );
return -EIO;
}
// Prep a receive URB
usb_fill_bulk_urb( ether_dev->rx_urb, ether_dev->usb,
usb_rcvbulkpipe(ether_dev->usb, ether_dev->data_ep_in),
ether_dev->rx_buff, ether_dev->wMaxSegmentSize,
read_bulk_callback, ether_dev );
// Put it out there so the device can send us stuff
if ( (res = usb_submit_urb(ether_dev->rx_urb, GFP_KERNEL)) )
{
// Hmm... Okay...
warn("%s failed rx_urb %d", __FUNCTION__, res );
}
// Tell the kernel we are ready to start receiving from it
netif_start_queue( net );
// We are up and running.
ether_dev->flags |= CDC_ETHER_RUNNING;
// Let's get ready to move frames!!!
return 0;
}
static int CDCEther_close( struct net_device *net )
{
ether_dev_t *ether_dev = net->priv;
// We are no longer running.
ether_dev->flags &= ~CDC_ETHER_RUNNING;
// Tell the kernel to stop sending us stuff
netif_stop_queue( net );
// If we are not already unplugged, turn off USB
// traffic
if ( !(ether_dev->flags & CDC_ETHER_UNPLUG) ) {
disable_net_traffic( ether_dev );
}
// We don't need the URBs anymore.
usb_unlink_urb( ether_dev->rx_urb );
usb_unlink_urb( ether_dev->tx_urb );
usb_unlink_urb( ether_dev->intr_urb );
// That's it. I'm done.
return 0;
}
static int CDCEther_ioctl( struct net_device *net, struct ifreq *rq, int cmd )
{
//__u16 *data = (__u16 *)&rq->ifr_data;
//ether_dev_t *ether_dev = net->priv;
// No support here yet.
// Do we need support???
switch(cmd) {
case SIOCDEVPRIVATE:
return -EOPNOTSUPP;
case SIOCDEVPRIVATE+1:
return -EOPNOTSUPP;
case SIOCDEVPRIVATE+2:
//return 0;
return -EOPNOTSUPP;
default:
return -EOPNOTSUPP;
}
}
#if 0
static void CDC_SetEthernetPacketFilter (ether_dev_t *ether_dev)
{
usb_control_msg(ether_dev->usb,
usb_sndctrlpipe(ether_dev->usb, 0),
SET_ETHERNET_PACKET_FILTER, /* request */
USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_INTERFACE, /* request type */
cpu_to_le16(ether_dev->mode_flags), /* value */
cpu_to_le16((u16)ether_dev->comm_interface), /* index */
NULL,
0, /* size */
HZ); /* timeout */
}
#endif
static void CDCEther_set_multicast( struct net_device *net )
{
ether_dev_t *ether_dev = net->priv;
int i;
__u8 *buff;
// Tell the kernel to stop sending us frames while we get this
// all set up.
// netif_stop_queue(net);
// FIXME: We hold xmit_lock. If you want to do the queue stuff you need
// to enable it from a completion handler
/* Note: do not reorder, GCC is clever about common statements. */
if (net->flags & IFF_PROMISC) {
/* Unconditionally log net taps. */
info( "%s: Promiscuous mode enabled", net->name);
ether_dev->mode_flags = MODE_FLAG_PROMISCUOUS |
MODE_FLAG_ALL_MULTICAST |
MODE_FLAG_DIRECTED |
MODE_FLAG_BROADCAST |
MODE_FLAG_MULTICAST;
} else if (net->mc_count > ether_dev->wNumberMCFilters) {
/* Too many to filter perfectly -- accept all multicasts. */
info("%s: set too many MC filters, using allmulti", net->name);
ether_dev->mode_flags = MODE_FLAG_ALL_MULTICAST |
MODE_FLAG_DIRECTED |
MODE_FLAG_BROADCAST |
MODE_FLAG_MULTICAST;
} else if (net->flags & IFF_ALLMULTI) {
/* Filter in software */
info("%s: using allmulti", net->name);
ether_dev->mode_flags = MODE_FLAG_ALL_MULTICAST |
MODE_FLAG_DIRECTED |
MODE_FLAG_BROADCAST |
MODE_FLAG_MULTICAST;
} else {
/* do multicast filtering in hardware */
struct dev_mc_list *mclist;
info("%s: set multicast filters", net->name);
ether_dev->mode_flags = MODE_FLAG_ALL_MULTICAST |
MODE_FLAG_DIRECTED |
MODE_FLAG_BROADCAST |
MODE_FLAG_MULTICAST;
buff = kmalloc(6 * net->mc_count, GFP_ATOMIC);
for (i = 0, mclist = net->mc_list;
mclist && i < net->mc_count;
i++, mclist = mclist->next) {
memcpy(&mclist->dmi_addr, &buff[i * 6], 6);
}
#if 0
usb_control_msg(ether_dev->usb,
// FIXME: We hold a spinlock. You must not use a synchronous API
usb_sndctrlpipe(ether_dev->usb, 0),
SET_ETHERNET_MULTICAST_FILTER, /* request */
USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_INTERFACE, /* request type */
cpu_to_le16(net->mc_count), /* value */
cpu_to_le16((u16)ether_dev->comm_interface), /* index */
buff,
(6* net->mc_count), /* size */
HZ); /* timeout */
#endif
kfree(buff);
}
#if 0
CDC_SetEthernetPacketFilter(ether_dev);
#endif
// Tell the kernel to start giving frames to us again.
// netif_wake_queue(net);
}
//////////////////////////////////////////////////////////////////////////////
// Routines used to parse out the Functional Descriptors /////////////////////
//////////////////////////////////////////////////////////////////////////////
static int parse_header_functional_descriptor( int *bFunctionLength,
int bDescriptorType,
int bDescriptorSubtype,
unsigned char *data,
ether_dev_t *ether_dev,
int *requirements )
{
// Check to make sure we haven't seen one of these already.
if ( (~*requirements) & REQ_HDR_FUNC_DESCR ) {
err( "Multiple Header Functional Descriptors found." );
return -1;
}
// Is it the right size???
if (*bFunctionLength != 5) {
info( "Invalid length in Header Functional Descriptor" );
// This is a hack to get around a particular device (NO NAMES)
// It has this function length set to the length of the
// whole class-specific descriptor
*bFunctionLength = 5;
}
// Nothing extremely useful here.
// We'll keep it for posterity
ether_dev->bcdCDC = data[0] + (data[1] << 8);
dbg( "Found Header descriptor, CDC version %x", ether_dev->bcdCDC);
// We've seen one of these
*requirements &= ~REQ_HDR_FUNC_DESCR;
// It's all good.
return 0;
}
static int parse_union_functional_descriptor( int *bFunctionLength,
int bDescriptorType,
int bDescriptorSubtype,
unsigned char *data,
ether_dev_t *ether_dev,
int *requirements )
{
// Check to make sure we haven't seen one of these already.
if ( (~*requirements) & REQ_UNION_FUNC_DESCR ) {
err( "Multiple Union Functional Descriptors found." );
return -1;
}
// Is it the right size?
if (*bFunctionLength != 5) {
// It is NOT the size we expected.
err( "Unsupported length in Union Functional Descriptor" );
return -1;
}
// Sanity check of sorts
if (ether_dev->comm_interface != data[0]) {
// This tells us that we are chasing the wrong comm
// interface or we are crazy or something else weird.
if (ether_dev->comm_interface == data[1]) {
info( "Probably broken Union descriptor, fudging data interface" );
// We'll need this in a few microseconds,
// so guess here, and hope for the best
ether_dev->data_interface = data[0];
} else {
err( "Union Functional Descriptor is broken beyond repair" );
return -1;
}
} else{ // Descriptor is OK
// We'll need this in a few microseconds!
ether_dev->data_interface = data[1];
}
// We've seen one of these now.
*requirements &= ~REQ_UNION_FUNC_DESCR;
// Done
return 0;
}
static int parse_ethernet_functional_descriptor( int *bFunctionLength,
int bDescriptorType,
int bDescriptorSubtype,
unsigned char *data,
ether_dev_t *ether_dev,
int *requirements )
{
// Check to make sure we haven't seen one of these already.
if ( (~*requirements) & REQ_ETH_FUNC_DESCR ) {
err( "Multiple Ethernet Functional Descriptors found." );
return -1;
}
// Is it the right size?
if (*bFunctionLength != 13) {
err( "Invalid length in Ethernet Networking Functional Descriptor" );
return -1;
}
// Lots of goodies from this one. They are all important.
ether_dev->iMACAddress = data[0];
ether_dev->bmEthernetStatistics = data[1] + (data[2] << 8) + (data[3] << 16) + (data[4] << 24);
ether_dev->wMaxSegmentSize = data[5] + (data[6] << 8);
ether_dev->wNumberMCFilters = (data[7] + (data[8] << 8)) & 0x00007FFF;
if (ether_dev->wNumberMCFilters > multicast_filter_limit) {
ether_dev->wNumberMCFilters = multicast_filter_limit;
}
ether_dev->bNumberPowerFilters = data[9];
// We've seen one of these now.
*requirements &= ~REQ_ETH_FUNC_DESCR;
// That's all she wrote.
return 0;
}
static int parse_protocol_unit_functional_descriptor( int *bFunctionLength,
int bDescriptorType,
int bDescriptorSubtype,
unsigned char *data,
ether_dev_t *ether_dev,
int *requirements )
{
// There should only be one type if we are sane
if (bDescriptorType != CS_INTERFACE) {
info( "Invalid bDescriptorType found." );
return -1;
}
// The Subtype tells the tale.
switch (bDescriptorSubtype){
case 0x00: // Header Functional Descriptor
return parse_header_functional_descriptor( bFunctionLength,
bDescriptorType,
bDescriptorSubtype,
data,
ether_dev,
requirements );
break;
case 0x06: // Union Functional Descriptor
return parse_union_functional_descriptor( bFunctionLength,
bDescriptorType,
bDescriptorSubtype,
data,
ether_dev,
requirements );
break;
case 0x0F: // Ethernet Networking Functional Descriptor
return parse_ethernet_functional_descriptor( bFunctionLength,
bDescriptorType,
bDescriptorSubtype,
data,
ether_dev,
requirements );
break;
default: // We don't support this at this time...
// However that doesn't necessarily indicate an error.
dbg( "Unexpected header type %x:", bDescriptorSubtype );
return 0;
}
// How did we get here???
return -1;
}
static int parse_ethernet_class_information( unsigned char *data, int length, ether_dev_t *ether_dev )
{
int loc = 0;
int rc;
int bFunctionLength;
int bDescriptorType;
int bDescriptorSubtype;
int requirements = REQUIREMENTS_TOTAL;
// As long as there is something here, we will try to parse it
while (loc < length) {
// Length
bFunctionLength = data[loc];
loc++;
// Type
bDescriptorType = data[loc];
loc++;
// Subtype
bDescriptorSubtype = data[loc];
loc++;
// ship this off to be processed elsewhere.
rc = parse_protocol_unit_functional_descriptor( &bFunctionLength,
bDescriptorType,
bDescriptorSubtype,
&data[loc],
ether_dev,
&requirements );
// Did it process okay?
if (rc) {
// Something was hosed somewhere.
// No need to continue;
err("Bad descriptor parsing: %x", rc );
return -1;
}
// We have already taken three bytes.
loc += (bFunctionLength - 3);
}
// Check to see if we got everything we need.
if (requirements) {
// We missed some of the requirements...
err( "Not all required functional descriptors present 0x%08X", requirements );
return -1;
}
// We got everything.
return 0;
}
//////////////////////////////////////////////////////////////////////////////
// Routine to check for the existence of the Functional Descriptors //////////
//////////////////////////////////////////////////////////////////////////////
static int find_and_parse_ethernet_class_information( struct usb_device *device, ether_dev_t *ether_dev )
{
struct usb_host_config *conf = NULL;
struct usb_interface *comm_intf_group = NULL;
struct usb_host_interface *comm_intf = NULL;
int rc = -1;
// The assumption here is that find_ethernet_comm_interface
// and find_valid_configuration
// have already filled in the information about where to find
// the a valid commication interface.
conf = &( device->config[ether_dev->configuration_num] );
comm_intf_group = &( conf->interface[ether_dev->comm_interface] );
comm_intf = &( comm_intf_group->altsetting[ether_dev->comm_interface_altset_num] );
// Let's check and see if it has the extra information we need...
if (comm_intf->extralen > 0) {
// This is where the information is SUPPOSED to be.
rc = parse_ethernet_class_information( comm_intf->extra, comm_intf->extralen, ether_dev );
} else if (conf->extralen > 0) {
// This is a hack. The spec says it should be at the interface
// location checked above. However I have seen it here also.
// This is the same device that requires the functional descriptor hack above
warn( "Ethernet information found at device configuration. This is broken." );
rc = parse_ethernet_class_information( conf->extra, conf->extralen, ether_dev );
} else {
// I don't know where else to look.
warn( "No ethernet information found." );
rc = -1;
}
return rc;
}
//////////////////////////////////////////////////////////////////////////////
// Routines to verify the data interface /////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
static int get_data_interface_endpoints( struct usb_device *device, ether_dev_t *ether_dev )
{
struct usb_host_config *conf = NULL;
struct usb_interface *data_intf_group = NULL;
struct usb_host_interface *data_intf = NULL;
// Walk through and get to the data interface we are checking.
conf = &( device->config[ether_dev->configuration_num] );
data_intf_group = &( conf->interface[ether_dev->data_interface] );
data_intf = &( data_intf_group->altsetting[ether_dev->data_interface_altset_num_with_traffic] );
// Start out assuming we won't find anything we can use
ether_dev->data_ep_in = 0;
ether_dev->data_ep_out = 0;
// If these are not BULK endpoints, we don't want them
if ( data_intf->endpoint[0].desc.bmAttributes != 0x02 ) {
return -1;
} if ( data_intf->endpoint[1].desc.bmAttributes != 0x02 ) {
return -1;
}
// Check the first endpoint to see if it is IN or OUT
if ( data_intf->endpoint[0].desc.bEndpointAddress & 0x80 ) {
// This endpoint is IN
ether_dev->data_ep_in = data_intf->endpoint[0].desc.bEndpointAddress & 0x7F;
} else {
// This endpoint is OUT
ether_dev->data_ep_out = data_intf->endpoint[0].desc.bEndpointAddress & 0x7F;
ether_dev->data_ep_out_size = data_intf->endpoint[0].desc.wMaxPacketSize;
}
// Check the second endpoint to see if it is IN or OUT
if ( data_intf->endpoint[1].desc.bEndpointAddress & 0x80 ) {
// This endpoint is IN
ether_dev->data_ep_in = data_intf->endpoint[1].desc.bEndpointAddress & 0x7F;
} else {
// This endpoint is OUT
ether_dev->data_ep_out = data_intf->endpoint[1].desc.bEndpointAddress & 0x7F;
ether_dev->data_ep_out_size = data_intf->endpoint[1].desc.wMaxPacketSize;
}
// Now make sure we got both an IN and an OUT
if (ether_dev->data_ep_in && ether_dev->data_ep_out) {
// We did get both, we are in good shape...
info( "detected BULK OUT packets of size %d", ether_dev->data_ep_out_size );
return 0;
}
return -1;
}
static int verify_ethernet_data_interface( struct usb_device *device, ether_dev_t *ether_dev )
{
struct usb_host_config *conf = NULL;
struct usb_interface *data_intf_group = NULL;
struct usb_interface_descriptor *data_intf = NULL;
int rc = -1;
int status;
int altset_num;
// The assumption here is that parse_ethernet_class_information()
// and find_valid_configuration()
// have already filled in the information about where to find
// a data interface
conf = &( device->config[ether_dev->configuration_num] );
data_intf_group = &( conf->interface[ether_dev->data_interface] );
// start out assuming we won't find what we are looking for.
ether_dev->data_interface_altset_num_with_traffic = -1;
ether_dev->data_bAlternateSetting_with_traffic = -1;
ether_dev->data_interface_altset_num_without_traffic = -1;
ether_dev->data_bAlternateSetting_without_traffic = -1;
// Walk through every possible setting for this interface until
// we find what makes us happy.
for ( altset_num = 0; altset_num < data_intf_group->num_altsetting; altset_num++ ) {
data_intf = &( data_intf_group->altsetting[altset_num].desc );
// Is this a data interface we like?
if ( ( data_intf->bInterfaceClass == 0x0A )
&& ( data_intf->bInterfaceSubClass == 0x00 )
&& ( data_intf->bInterfaceProtocol == 0x00 ) ) {
if ( data_intf->bNumEndpoints == 2 ) {
// We are required to have one of these.
// An interface with 2 endpoints to send Ethernet traffic back and forth
// It actually may be possible that the device might only
// communicate in a vendor specific manner.
// That would not be very nice.
// We can add that one later.
ether_dev->data_bInterfaceNumber = data_intf->bInterfaceNumber;
ether_dev->data_interface_altset_num_with_traffic = altset_num;
ether_dev->data_bAlternateSetting_with_traffic = data_intf->bAlternateSetting;
status = get_data_interface_endpoints( device, ether_dev );
if (!status) {
rc = 0;
}
}
if ( data_intf->bNumEndpoints == 0 ) {
// According to the spec we are SUPPOSED to have one of these
// In fact the device is supposed to come up in this state.
// However, I have seen a device that did not have such an interface.
// So it must be just optional for our driver...
ether_dev->data_bInterfaceNumber = data_intf->bInterfaceNumber;
ether_dev->data_interface_altset_num_without_traffic = altset_num;
ether_dev->data_bAlternateSetting_without_traffic = data_intf->bAlternateSetting;
}
}
}
return rc;
}
//////////////////////////////////////////////////////////////////////////////
// Routine to find a communication interface /////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
static int find_ethernet_comm_interface( struct usb_device *device, ether_dev_t *ether_dev )
{
struct usb_host_config *conf = NULL;
struct usb_interface *comm_intf_group = NULL;
struct usb_interface_descriptor *comm_intf = NULL;
int intf_num;
int altset_num;
int rc;
conf = &( device->config[ether_dev->configuration_num] );
// We need to check and see if any of these interfaces are something we want.
// Walk through each interface one at a time
for ( intf_num = 0; intf_num < conf->desc.bNumInterfaces; intf_num++ ) {
comm_intf_group = &( conf->interface[intf_num] );
// Now for each of those interfaces, check every possible
// alternate setting.
for ( altset_num = 0; altset_num < comm_intf_group->num_altsetting; altset_num++ ) {
comm_intf = &( comm_intf_group->altsetting[altset_num].desc);
// Is this a communication class of interface of the
// ethernet subclass variety.
if ( ( comm_intf->bInterfaceClass == 0x02 )
&& ( comm_intf->bInterfaceSubClass == 0x06 )
&& ( comm_intf->bInterfaceProtocol == 0x00 ) ) {
if ( comm_intf->bNumEndpoints == 1 ) {
// Good, we found one, we will try this one
// Fill in the structure...
ether_dev->comm_interface = intf_num;
ether_dev->comm_bInterfaceNumber = comm_intf->bInterfaceNumber;
ether_dev->comm_interface_altset_num = altset_num;
ether_dev->comm_bAlternateSetting = comm_intf->bAlternateSetting;
// Look for the Ethernet Functional Descriptors
rc = find_and_parse_ethernet_class_information( device, ether_dev );
if (rc) {
// Nope this was no good after all.
continue;
}
// Check that we really can talk to the data
// interface
// This includes # of endpoints, protocols,
// etc.
rc = verify_ethernet_data_interface( device, ether_dev );
if (rc) {
// We got something we didn't like
continue;
}
// This communication interface seems to give us everything
// we require. We have all the ethernet info we need.
// Let's get out of here and go home right now.
return 0;
} else {
// bNumEndPoints != 1
// We found an interface that had the wrong number of
// endpoints but would have otherwise been okay
} // end bNumEndpoints check.
} // end interface specifics check.
} // end for altset_num
} // end for intf_num
return -1;
}
//////////////////////////////////////////////////////////////////////////////
// Routine to go through all configurations and find one that ////////////////
// is an Ethernet Networking Device //////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
static int find_valid_configuration( struct usb_device *device, ether_dev_t *ether_dev )
{
struct usb_host_config *conf = NULL;
int conf_num;
int rc;
// We will try each and every possible configuration
for ( conf_num = 0; conf_num < device->descriptor.bNumConfigurations; conf_num++ ) {
conf = &( device->config[conf_num] );
// Our first requirement : 2 interfaces
if ( conf->desc.bNumInterfaces != 2 ) {
// I currently don't know how to handle devices with any number of interfaces
// other than 2.
continue;
}
// This one passed our first check, fill in some
// useful data
ether_dev->configuration_num = conf_num;
ether_dev->bConfigurationValue = conf->desc.bConfigurationValue;
// Now run it through the ringers and see what comes
// out the other side.
rc = find_ethernet_comm_interface( device, ether_dev );
// Check if we found an ethernet Communcation Device
if ( !rc ) {
// We found one.
return 0;
}
}
// None of the configurations suited us.
return -1;
}
//////////////////////////////////////////////////////////////////////////////
// Routine that checks a given configuration to see if any driver ////////////
// has claimed any of the devices interfaces /////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
static int check_for_claimed_interfaces( struct usb_host_config *config )
{
struct usb_interface *comm_intf_group;
int intf_num;
// Go through all the interfaces and make sure none are
// claimed by anybody else.
for ( intf_num = 0; intf_num < config->desc.bNumInterfaces; intf_num++ ) {
comm_intf_group = &( config->interface[intf_num] );
if ( usb_interface_claimed( comm_intf_group ) ) {
// Somebody has beat us to this guy.
// We can't change the configuration out from underneath of whoever
// is using this device, so we will go ahead and give up.
return -1;
}
}
// We made it all the way through.
// I guess no one has claimed any of these interfaces.
return 0;
}
//////////////////////////////////////////////////////////////////////////////
// Routines to ask for and set the kernel network interface's MAC address ////
// Used by driver's probe routine ////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
static inline unsigned char hex2dec( unsigned char digit )
{
// Is there a standard way to do this???
// I have written this code TOO MANY times.
if ( (digit >= '0') && (digit <= '9') ) {
return (digit - '0');
}
if ( (digit >= 'a') && (digit <= 'f') ) {
return (digit - 'a' + 10);
}
if ( (digit >= 'A') && (digit <= 'F') ) {
return (digit - 'A' + 10);
}
return 0;
}
static void set_ethernet_addr( ether_dev_t *ether_dev )
{
unsigned char mac_addr[6];
int i;
int len;
unsigned char buffer[13];
// Let's assume we don't get anything...
mac_addr[0] = 0x00;
mac_addr[1] = 0x00;
mac_addr[2] = 0x00;
mac_addr[3] = 0x00;
mac_addr[4] = 0x00;
mac_addr[5] = 0x00;
// Let's ask the device...
len = usb_string(ether_dev->usb, ether_dev->iMACAddress, buffer, 13);
// Sanity check!
if (len != 12) {
// You gotta love failing sanity checks
err("Attempting to get MAC address returned %d bytes", len);
return;
}
// Fill in the mac_addr
for (i = 0; i < 6; i++) {
mac_addr[i] = ( hex2dec( buffer[2 * i] ) << 4 ) + hex2dec( buffer[2 * i + 1] );
}
// Now copy it over to the kernel's network driver.
memcpy( ether_dev->net->dev_addr, mac_addr, sizeof(mac_addr) );
}
//////////////////////////////////////////////////////////////////////////////
// Routine to print to syslog information about the driver ///////////////////
// Used by driver's probe routine ////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
static void log_device_info(ether_dev_t *ether_dev)
{
int len;
int string_num;
unsigned char *manu = NULL;
unsigned char *prod = NULL;
unsigned char *sern = NULL;
unsigned char *mac_addr;
manu = kmalloc(256, GFP_KERNEL);
prod = kmalloc(256, GFP_KERNEL);
sern = kmalloc(256, GFP_KERNEL);
if (!manu || !prod || !sern) {
dbg("no mem for log_device_info");
goto fini;
}
// Default empty strings in case we don't find a real one
manu[0] = 0x00;
prod[0] = 0x00;
sern[0] = 0x00;
// Try to get the device Manufacturer
string_num = ether_dev->usb->descriptor.iManufacturer;
if (string_num) {
// Put it into its buffer
len = usb_string(ether_dev->usb, string_num, manu, 255);
// Just to be safe
manu[len] = 0x00;
}
// Try to get the device Product Name
string_num = ether_dev->usb->descriptor.iProduct;
if (string_num) {
// Put it into its buffer
len = usb_string(ether_dev->usb, string_num, prod, 255);
// Just to be safe
prod[len] = 0x00;
}
// Try to get the device Serial Number
string_num = ether_dev->usb->descriptor.iSerialNumber;
if (string_num) {
// Put it into its buffer
len = usb_string(ether_dev->usb, string_num, sern, 255);
// Just to be safe
sern[len] = 0x00;
}
// This makes it easier for us to print
mac_addr = ether_dev->net->dev_addr;
// Now send everything we found to the syslog
info( "%s: %s %s %s %02X:%02X:%02X:%02X:%02X:%02X",
ether_dev->net->name, manu, prod, sern, mac_addr[0],
mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4],
mac_addr[5] );
fini:
kfree(manu);
kfree(prod);
kfree(sern);
}
/* Forward declaration */
static struct usb_driver CDCEther_driver ;
//////////////////////////////////////////////////////////////////////////////
// Module's probe routine ////////////////////////////////////////////////////
// claims interfaces if they are for an Ethernet CDC /////////////////////////
//////////////////////////////////////////////////////////////////////////////
static int CDCEther_probe( struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *usb = interface_to_usbdev(intf);
struct net_device *net;
ether_dev_t *ether_dev;
int rc;
// First we should check the active configuration to see if
// any other driver has claimed any of the interfaces.
if ( check_for_claimed_interfaces( usb->actconfig ) ) {
// Someone has already put there grubby paws on this device.
// We don't want it now...
return -ENODEV;
}
// We might be finding a device we can use.
// We all go ahead and allocate our storage space.
// We need to because we have to start filling in the data that
// we are going to need later.
if(!(ether_dev = kmalloc(sizeof(ether_dev_t), GFP_KERNEL))) {
err("out of memory allocating device structure");
return -ENOMEM;
}
// Zero everything out.
memset(ether_dev, 0, sizeof(ether_dev_t));
ether_dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!ether_dev->rx_urb) {
kfree(ether_dev);
return -ENOMEM;
}
ether_dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!ether_dev->tx_urb) {
usb_free_urb(ether_dev->rx_urb);
kfree(ether_dev);
return -ENOMEM;
}
ether_dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!ether_dev->intr_urb) {
usb_free_urb(ether_dev->tx_urb);
usb_free_urb(ether_dev->rx_urb);
kfree(ether_dev);
return -ENOMEM;
}
// Let's see if we can find a configuration we can use.
rc = find_valid_configuration( usb, ether_dev );
if (rc) {
// Nope we couldn't find one we liked.
// This device was not meant for us to control.
goto error_all;
}
// Now that we FOUND a configuration. let's try to make the
// device go into it.
if ( usb_set_configuration( usb, ether_dev->bConfigurationValue ) ) {
err("usb_set_configuration() failed");
goto error_all;
}
// Now set the communication interface up as required.
if (usb_set_interface(usb, ether_dev->comm_bInterfaceNumber, ether_dev->comm_bAlternateSetting)) {
err("usb_set_interface() failed");
goto error_all;
}
// Only turn traffic on right now if we must...
if (ether_dev->data_interface_altset_num_without_traffic >= 0) {
// We found an alternate setting for the data
// interface that allows us to turn off traffic.
// We should use it.
if (usb_set_interface( usb,
ether_dev->data_bInterfaceNumber,
ether_dev->data_bAlternateSetting_without_traffic)) {
err("usb_set_interface() failed");
goto error_all;
}
} else {
// We didn't find an alternate setting for the data
// interface that would let us turn off traffic.
// Oh well, let's go ahead and do what we must...
if (usb_set_interface( usb,
ether_dev->data_bInterfaceNumber,
ether_dev->data_bAlternateSetting_with_traffic)) {
err("usb_set_interface() failed");
goto error_all;
}
}
// Now we need to get a kernel Ethernet interface.
net = alloc_etherdev(0);
if ( !net ) {
// Hmm... The kernel is not sharing today...
// Fine, we didn't want it anyway...
err( "Unable to initialize ethernet device" );
goto error_all;
}
// Now that we have an ethernet device, let's set it up
// (And I don't mean "set [it] up the bomb".)
net->priv = ether_dev;
SET_MODULE_OWNER(net);
net->open = CDCEther_open;
net->stop = CDCEther_close;
net->watchdog_timeo = CDC_ETHER_TX_TIMEOUT;
net->tx_timeout = CDCEther_tx_timeout; // TX timeout function
net->do_ioctl = CDCEther_ioctl;
net->hard_start_xmit = CDCEther_start_xmit;
net->set_multicast_list = CDCEther_set_multicast;
net->get_stats = CDCEther_netdev_stats;
net->mtu = ether_dev->wMaxSegmentSize - 14;
// We'll keep track of this information for later...
ether_dev->usb = usb;
ether_dev->net = net;
// and don't forget the MAC address.
set_ethernet_addr( ether_dev );
// Send a message to syslog about what we are handling
log_device_info( ether_dev );
// I claim this interface to be a CDC Ethernet Networking device
usb_driver_claim_interface( &CDCEther_driver,
&(usb->config[ether_dev->configuration_num].interface[ether_dev->comm_interface]),
ether_dev );
// I claim this interface to be a CDC Ethernet Networking device
usb_driver_claim_interface( &CDCEther_driver,
&(usb->config[ether_dev->configuration_num].interface[ether_dev->data_interface]),
ether_dev );
// Does this REALLY do anything???
usb_get_dev( usb );
// TODO - last minute HACK
ether_dev->comm_ep_in = 5;
if (register_netdev(net) != 0) {
usb_put_dev(usb);
goto out;
}
/* FIXME!!! This driver needs to be fixed to work with the new USB interface logic
* this is not the correct thing to be doing here, we need to set the interface
* driver specific data field.
*/
// Okay, we are finally done...
return 0;
out:
usb_driver_release_interface( &CDCEther_driver,
&(usb->config[ether_dev->configuration_num].interface[ether_dev->comm_interface]) );
usb_driver_release_interface( &CDCEther_driver,
&(usb->config[ether_dev->configuration_num].interface[ether_dev->data_interface]) );
// bailing out with our tail between our knees
error_all:
usb_free_urb(ether_dev->tx_urb);
usb_free_urb(ether_dev->rx_urb);
usb_free_urb(ether_dev->intr_urb);
kfree( ether_dev );
return -EIO;
}
//////////////////////////////////////////////////////////////////////////////
// Module's disconnect routine ///////////////////////////////////////////////
// Called when the driver is unloaded or the device is unplugged /////////////
// (Whichever happens first assuming the driver suceeded at its probe) ///////
//////////////////////////////////////////////////////////////////////////////
static void CDCEther_disconnect( struct usb_interface *intf )
{
ether_dev_t *ether_dev = usb_get_intfdata(intf);
struct usb_device *usb;
usb_set_intfdata(intf, NULL);
// Sanity check!!!
if ( !ether_dev || !ether_dev->usb ) {
// We failed. We are insane!!!
warn("unregistering non-existant device");
return;
}
// Make sure we fail the sanity check if we try this again.
ether_dev->usb = NULL;
usb = interface_to_usbdev(intf);
// It is possible that this function is called before
// the "close" function.
// This tells the close function we are already disconnected
ether_dev->flags |= CDC_ETHER_UNPLUG;
// We don't need the network device any more
unregister_netdev( ether_dev->net );
// For sanity checks
ether_dev->net = NULL;
// I ask again, does this do anything???
usb_put_dev( usb );
// We are done with this interface
usb_driver_release_interface( &CDCEther_driver,
&(usb->config[ether_dev->configuration_num].interface[ether_dev->comm_interface]) );
// We are done with this interface too
usb_driver_release_interface( &CDCEther_driver,
&(usb->config[ether_dev->configuration_num].interface[ether_dev->data_interface]) );
// No more tied up kernel memory
usb_free_urb(ether_dev->intr_urb);
usb_free_urb(ether_dev->rx_urb);
usb_free_urb(ether_dev->rx_urb);
kfree( ether_dev );
// This does no good, but it looks nice!
ether_dev = NULL;
}
//////////////////////////////////////////////////////////////////////////////
// Driver info ///////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
static struct usb_driver CDCEther_driver = {
.owner = THIS_MODULE,
.name = "CDCEther",
.probe = CDCEther_probe,
.disconnect = CDCEther_disconnect,
.id_table = CDCEther_ids,
};
//////////////////////////////////////////////////////////////////////////////
// init and exit routines called when driver is installed and uninstalled ////
//////////////////////////////////////////////////////////////////////////////
int __init CDCEther_init(void)
{
info( "%s", version );
return usb_register( &CDCEther_driver );
}
void __exit CDCEther_exit(void)
{
usb_deregister( &CDCEther_driver );
}
//////////////////////////////////////////////////////////////////////////////
// Module info ///////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
module_init( CDCEther_init );
module_exit( CDCEther_exit );
MODULE_AUTHOR("Brad Hards and another");
MODULE_DESCRIPTION("USB CDC Ethernet driver");
MODULE_LICENSE("GPL");
MODULE_PARM (multicast_filter_limit, "i");
MODULE_PARM_DESC (multicast_filter_limit, "CDCEther maximum number of filtered multicast addresses");
MODULE_DEVICE_TABLE (usb, CDCEther_ids);
//////////////////////////////////////////////////////////////////////////////
// End of file ///////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
// Portions of this file taken from
// Petko Manolov - Petkan (petkan@dce.bg)
// from his driver pegasus.h
/*
* 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
*/
#define CS_INTERFACE 0x24
#define CDC_ETHER_MAX_MTU 1536
#define CDC_ETHER_PRESENT 0x00000001
#define CDC_ETHER_RUNNING 0x00000002
#define CDC_ETHER_TX_BUSY 0x00000004
#define CDC_ETHER_RX_BUSY 0x00000008
#define CDC_ETHER_UNPLUG 0x00000040
#define CDC_ETHER_TX_TIMEOUT (HZ*10)
#define TX_UNDERRUN 0x80
#define EXCESSIVE_COL 0x40
#define LATE_COL 0x20
#define NO_CARRIER 0x10
#define LOSS_CARRIER 0x08
#define JABBER_TIMEOUT 0x04
#define CDC_ETHER_REQT_READ 0xc0
#define CDC_ETHER_REQT_WRITE 0x40
#define CDC_ETHER_REQ_GET_REGS 0xf0
#define CDC_ETHER_REQ_SET_REGS 0xf1
#define CDC_ETHER_REQ_SET_REG PIPERIDER_REQ_SET_REGS
#define L1_ALIGN(x) x __attribute__((aligned(L1_CACHE_BYTES)))
#define MODE_FLAG_PROMISCUOUS (1<<0)
#define MODE_FLAG_ALL_MULTICAST (1<<1)
#define MODE_FLAG_DIRECTED (1<<2)
#define MODE_FLAG_BROADCAST (1<<3)
#define MODE_FLAG_MULTICAST (1<<4)
#define SET_ETHERNET_MULTICAST_FILTER 0x40
#define SET_ETHERNET_PACKET_FILTER 0x43
typedef struct _ether_dev_t {
struct usb_device *usb;
struct net_device *net;
struct net_device_stats stats;
unsigned flags;
int configuration_num;
int bConfigurationValue;
int comm_interface;
int comm_bInterfaceNumber;
int comm_interface_altset_num;
int comm_bAlternateSetting;
int comm_ep_in;
int data_interface;
int data_bInterfaceNumber;
int data_interface_altset_num_with_traffic;
int data_bAlternateSetting_with_traffic;
int data_interface_altset_num_without_traffic;
int data_bAlternateSetting_without_traffic;
int data_ep_in;
int data_ep_out;
int data_ep_out_size;
__u16 bcdCDC;
__u8 iMACAddress;
__u32 bmEthernetStatistics;
__u16 wMaxSegmentSize;
__u16 mode_flags;
__u16 wNumberMCFilters;
__u8 bNumberPowerFilters;
int intr_interval;
struct urb *rx_urb, *tx_urb, *intr_urb;
unsigned char L1_ALIGN(rx_buff[CDC_ETHER_MAX_MTU]);
unsigned char L1_ALIGN(tx_buff[CDC_ETHER_MAX_MTU]);
unsigned char L1_ALIGN(intr_buff[8]);
} ether_dev_t;
#define REQ_HDR_FUNC_DESCR 0x0001
#define REQ_UNION_FUNC_DESCR 0x0002
#define REQ_ETH_FUNC_DESCR 0x0004
#define REQUIREMENTS_TOTAL 0x0007
......@@ -56,9 +56,11 @@
#include <linux/usb.h>
#include <linux/types.h>
#include <linux/ethtool.h>
#include <linux/pci.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
#include <asm/byteorder.h>
#include <asm/dma-mapping.h>
#define DEBUG
......@@ -215,8 +217,10 @@ struct kaweth_device
__u32 status;
int end;
int removed;
int suspend_lowmem;
int suspend_lowmem_rx;
int suspend_lowmem_ctrl;
int linkstate;
struct work_struct lowmem_work;
struct usb_device *dev;
struct net_device *net;
......@@ -475,14 +479,29 @@ static int kaweth_resubmit_rx_urb(struct kaweth_device *, int);
/****************************************************************
int_callback
*****************************************************************/
static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, int mf)
{
int status;
status = usb_submit_urb (kaweth->irq_urb, mf);
if (unlikely(status == -ENOMEM)) {
kaweth->suspend_lowmem_ctrl = 1;
schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
} else {
kaweth->suspend_lowmem_ctrl = 0;
}
if (status)
err ("can't resubmit intr, %s-%s, status %d",
kaweth->dev->bus->bus_name,
kaweth->dev->devpath, status);
}
static void int_callback(struct urb *u, struct pt_regs *regs)
{
struct kaweth_device *kaweth = u->context;
int act_state, status;
/* we abuse the interrupt urb for rebsubmitting under low memory saving a timer */
if (kaweth->suspend_lowmem)
kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
int act_state;
switch (u->status) {
case 0: /* success */
......@@ -506,13 +525,24 @@ static void int_callback(struct urb *u, struct pt_regs *regs)
kaweth->linkstate = act_state;
}
resubmit:
status = usb_submit_urb (u, SLAB_ATOMIC);
if (status)
err ("can't resubmit intr, %s-%s, status %d",
kaweth->dev->bus->bus_name,
kaweth->dev->devpath, status);
kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC);
}
static void kaweth_resubmit_tl(void *d)
{
struct kaweth_device *kaweth = (struct kaweth_device *)d;
if (kaweth->status | KAWETH_STATUS_CLOSING)
return;
if (kaweth->suspend_lowmem_rx)
kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
if (kaweth->suspend_lowmem_ctrl)
kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
}
/****************************************************************
* kaweth_resubmit_rx_urb
****************************************************************/
......@@ -532,11 +562,13 @@ static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth,
kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle;
if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) {
if (result == -ENOMEM)
kaweth->suspend_lowmem = 1;
if (result == -ENOMEM) {
kaweth->suspend_lowmem_rx = 1;
schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
}
kaweth_err("resubmitting rx_urb %d failed", result);
} else {
kaweth->suspend_lowmem = 0;
kaweth->suspend_lowmem_rx = 0;
}
return result;
......@@ -665,6 +697,13 @@ static int kaweth_close(struct net_device *net)
usb_unlink_urb(kaweth->irq_urb);
usb_unlink_urb(kaweth->rx_urb);
flush_scheduled_work();
/* a scheduled work may have resubmitted,
we hit them again */
usb_unlink_urb(kaweth->irq_urb);
usb_unlink_urb(kaweth->rx_urb);
kaweth->status &= ~KAWETH_STATUS_CLOSING;
return 0;
......@@ -1075,10 +1114,15 @@ static int kaweth_probe(
memset(&kaweth->stats, 0, sizeof(kaweth->stats));
INIT_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl, (void *)kaweth);
SET_MODULE_OWNER(netdev);
usb_set_intfdata(intf, kaweth);
if (dma_supported (&intf->dev, 0xffffffffffffffffULL))
kaweth->net->features |= NETIF_F_HIGHDMA;
if (register_netdev(netdev) != 0) {
kaweth_err("Error calling init_etherdev.");
goto err_intfdata;
......@@ -1092,7 +1136,6 @@ static int kaweth_probe(
err_intfdata:
usb_set_intfdata(intf, NULL);
err_all:
usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
err_all_but_rxbuf:
usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
......
......@@ -412,6 +412,7 @@ struct divisor_table_entry {
// MCR.7 = 0.
//
static struct divisor_table_entry divisor_table[] = {
{ 50, 4608},
{ 75, 3072},
{ 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
{ 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
......@@ -2591,7 +2592,7 @@ static int calc_baud_rate_divisor (int baudrate, int *divisor)
// We have tried all of the standard baud rates
// lets try to calculate the divisor for this baud rate
// Make sure the baud rate is reasonable
if (baudrate > 75 && baudrate < 230400) {
if (baudrate < 230400) {
// get divisor
custom = (__u16)(230400L / baudrate);
......
......@@ -537,16 +537,20 @@ static int pl2303_tiocmget (struct usb_serial_port *port, struct file *file)
struct pl2303_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
unsigned int mcr;
unsigned int status;
unsigned int result;
dbg("%s (%d)", __FUNCTION__, port->number);
spin_lock_irqsave (&priv->lock, flags);
mcr = priv->line_control;
status = priv->line_status;
spin_unlock_irqrestore (&priv->lock, flags);
result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0)
| ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0);
| ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0)
| ((status & UART_CTS) ? TIOCM_CTS : 0)
| ((status & UART_DSR) ? TIOCM_DSR : 0);
dbg("%s - result = %x", __FUNCTION__, result);
......
......@@ -12,6 +12,10 @@
*
* See Documentation/usb/usb-serial.txt for more information on using this driver
*
* (06/03/2003) Judd Montgomery <judd at jpilot.org>
* Added support for module parameter options for untested/unknown
* devices.
*
* (03/09/2003) gkh
* Added support for the Sony Clie NZ90V device. Thanks to Martin Brachtl
* <brachtl@redgrep.cz> for the information.
......@@ -188,6 +192,9 @@ static int treo_attach (struct usb_serial *serial);
static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id);
static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id);
/* Parameters that may be passed into the module. */
static int vendor = -1;
static int product = -1;
static struct usb_device_id id_table [] = {
{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
......@@ -223,6 +230,7 @@ static struct usb_device_id id_table [] = {
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ }, /* optional parameter entry */
{ } /* Terminating entry */
};
......@@ -250,6 +258,7 @@ static struct usb_device_id id_table_combined [] = {
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
{ }, /* optional parameter entry */
{ } /* Terminating entry */
};
......@@ -942,6 +951,33 @@ static void visor_set_termios (struct usb_serial_port *port, struct termios *old
static int __init visor_init (void)
{
int i;
/* Only if parameters were passed to us */
if ((vendor>0) && (product>0)) {
struct usb_device_id usb_dev_temp[]=
{{USB_DEVICE(vendor, product),
.driver_info = (kernel_ulong_t)&palm_os_4_probe }};
/* Find the last entry in id_table */
for (i=0; ; i++) {
if (id_table[i].idVendor==0) {
id_table[i] = usb_dev_temp[0];
break;
}
}
/* Find the last entry in id_table_combined */
for (i=0; ; i++) {
if (id_table_combined[i].idVendor==0) {
id_table_combined[i] = usb_dev_temp[0];
break;
}
}
info("Untested USB device specified at time of module insertion");
info("Warning: This is not guaranteed to work");
info("Using a newer kernel is preferred to this method");
info("Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x",
vendor, product);
}
usb_serial_register (&handspring_device);
usb_serial_register (&clie_3_5_device);
usb_register (&visor_driver);
......@@ -969,3 +1005,7 @@ MODULE_LICENSE("GPL");
MODULE_PARM(debug, "i");
MODULE_PARM_DESC(debug, "Debug enabled or not");
MODULE_PARM(vendor, "i");
MODULE_PARM_DESC(vendor, "User specified vendor ID");
MODULE_PARM(product, "i");
MODULE_PARM_DESC(product, "User specified product ID");
......@@ -41,6 +41,7 @@
#include <linux/errno.h>
#include "initializers.h"
#include "debug.h"
#include "transport.h"
/* This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target
* mode */
......@@ -59,4 +60,50 @@ int usb_stor_euscsi_init(struct us_data *us)
return 0;
}
/* This function is required to activate all four slots on the UCR-61S2B
* flash reader */
int usb_stor_ucr61s2b_init(struct us_data *us)
{
struct bulk_cb_wrap *bcb;
struct bulk_cs_wrap *bcs;
int res, partial;
bcb = kmalloc(sizeof *bcb, in_interrupt() ? GFP_ATOMIC : GFP_NOIO);
if (!bcb) {
return(-1);
}
bcs = kmalloc(sizeof *bcs, in_interrupt() ? GFP_ATOMIC : GFP_NOIO);
if (!bcs) {
kfree(bcb);
return(-1);
}
US_DEBUGP("Sending UCR-61S2B initialization packet...\n");
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->Tag = 0;
bcb->DataTransferLength = cpu_to_le32(0);
bcb->Flags = bcb->Lun = 0;
bcb->Length = sizeof(UCR61S2B_INIT);
memset(bcb->CDB, 0, sizeof(bcb->CDB));
memcpy(bcb->CDB, UCR61S2B_INIT, sizeof(UCR61S2B_INIT));
res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb,
US_BULK_CB_WRAP_LEN, &partial);
US_DEBUGP("-- result is %d\n", res);
kfree(bcb);
if(res) {
kfree(bcs);
return(res);
}
res = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs,
US_BULK_CS_WRAP_LEN, &partial);
US_DEBUGP("-- result of status read is %d\n", res);
kfree(bcs);
return(res ? -1 : 0);
}
......@@ -48,3 +48,9 @@ int usb_stor_euscsi_init(struct us_data *us);
#ifdef CONFIG_USB_STORAGE_SDDR09
int sddr09_init(struct us_data *us);
#endif
#define UCR61S2B_INIT "\xec\x0a\x06\x00$PCCHIPS"
/* This function is required to activate all four slots on the UCR-61S2B
* flash reader */
int usb_stor_ucr61s2b_init(struct us_data *us);
......@@ -595,6 +595,16 @@ UNUSUAL_DEV( 0x0a16, 0x8888, 0x0100, 0x0100,
US_SC_SCSI, US_PR_BULK, NULL,
US_FL_FIX_INQUIRY ),
/* Pentax Optio S digital camera
* adapted from http://www2.goldfisch.at/knowledge/233
* (Peter Pilsl <pilsl@goldfisch.at>)
* by Christoph Weidemann <cweidema@indiana.edu> */
UNUSUAL_DEV( 0x0a17, 0x0006, 0x0000, 0xffff,
"Pentax",
"Optio S",
US_SC_8070, US_PR_CB, NULL,
US_FL_MODE_XLATE|US_FL_FIX_INQUIRY),
#ifdef CONFIG_USB_STORAGE_ISD200
UNUSUAL_DEV( 0x0bf6, 0xa001, 0x0100, 0x0110,
"ATI",
......@@ -610,6 +620,16 @@ UNUSUAL_DEV( 0x1065, 0x2136, 0x0000, 0x0001,
US_SC_SCSI, US_PR_BULK, NULL,
US_FL_MODE_XLATE | US_FL_FIX_INQUIRY ),
/* Reported by Kevin Cernekee <kpc-usbdev@gelato.uiuc.edu>
* Tested on hardware version 1.10.
* Entry is needed only for the initializer function override.
*/
UNUSUAL_DEV( 0x1019, 0x0c55, 0x0000, 0x9999,
"Desknote",
"UCR-61S2B",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_ucr61s2b_init,
0 ),
/* Reported by Dan Pilone <pilone@slac.com>
* The device needs the flags only.
* Also reported by Brian Hall <brihall@pcisys.net>, again for flags.
......
......@@ -10,11 +10,6 @@
* All Rights Reserved.
*
* This software is licensed under the GNU GPL version 2.
*
* ALTERNATIVELY, the kernel API documentation which is included in this
* software may also be licenced under the "GNU Free Documentation
* License" (version 1.2 or, at your choice, any later version), when
* used as part of the "USB Gadget API for Linux" documentation.
*/
#ifndef __LINUX_USB_GADGET_H
......
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