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Rev 27 → Rev 174

/ecos_usbeth.c
0,0 → 1,572
//==========================================================================
//
// ecos_usbeth.c
//
// Linux device driver for eCos-based USB ethernet peripherals.
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos 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 or (at your option) any later version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): bartv
// Contributors: bartv
// Date: 2000-11-12
//
//####DESCRIPTIONEND####
//==========================================================================
 
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
 
#ifdef MODULE
MODULE_AUTHOR("Bart Veer <bartv@redhat.com>");
MODULE_DESCRIPTION("USB ethernet driver for eCos-based peripherals");
#endif
 
// This array identifies specific implementations of eCos USB-ethernet
// devices. All implementations should add their vendor and device
// details.
 
typedef struct ecos_usbeth_impl {
const char* name;
__u16 vendor;
__u16 id;
} ecos_usbeth_impl;
 
const static ecos_usbeth_impl ecos_usbeth_implementations[] = {
{ "eCos ether", 0x4242, 0x4242 },
{ (const char*) 0, 0, 0 }
};
 
 
// Constants. These have to be kept in sync with the target-side
// code.
#define ECOS_USBETH_MAXTU 1516
#define ECOS_USBETH_MAX_CONTROL_TU 8
#define ECOS_USBETH_CONTROL_GET_MAC_ADDRESS 0x01
#define ECOS_USBETH_CONTROL_SET_PROMISCUOUS_MODE 0x02
 
// The main data structure. It keeps track of both the USB
// and network side of things, and provides buffers for
// the various operations.
//
// NOTE: currently this driver only supports a single
// plugged-in device. Theoretically multiple eCos-based
// USB ethernet devices could be plugged in to a single
// host and each one would require an ecos_usbeth
// structure.
typedef struct ecos_usbeth {
spinlock_t usb_lock;
int target_promiscuous;
struct usb_device* usb_dev;
struct net_device* net_dev;
struct net_device_stats stats;
struct urb rx_urb;
struct urb tx_urb;
unsigned char rx_buffer[ECOS_USBETH_MAXTU];
unsigned char tx_buffer[ECOS_USBETH_MAXTU];
} ecos_usbeth;
 
 
// open()
// Invoked by the TCP/IP stack when the interface is brought up.
// This just starts a receive operation.
static int
ecos_usbeth_open(struct net_device* net)
{
ecos_usbeth* usbeth = (ecos_usbeth*) net->priv;
int res;
 
netif_start_queue(net);
res = usb_submit_urb(&(usbeth->rx_urb));
if (0 != res) {
printk("ecos_usbeth: failed to start USB receives, %d\n", res);
}
MOD_INC_USE_COUNT;
return 0;
}
 
// close()
// Invoked by the TCP/IP stack when the interface is taken down.
// Any active USB operations need to be cancelled. During
// a disconnect this may get called twice, once for the
// disconnect and once for the network interface being
// brought down.
static int
ecos_usbeth_close(struct net_device* net)
{
ecos_usbeth* usbeth = (ecos_usbeth*) net->priv;
 
if (0 != netif_running(net)) {
netif_stop_queue(net);
net->start = 0;
 
if (-EINPROGRESS == usbeth->rx_urb.status) {
usb_unlink_urb(&(usbeth->rx_urb));
}
if (-EINPROGRESS == usbeth->tx_urb.status) {
usb_unlink_urb(&(usbeth->tx_urb));
}
MOD_DEC_USE_COUNT;
}
return 0;
}
 
// Reception.
// probe() fills in an rx_urb. When the net device is brought up
// the urb is activated, and this callback gets run for incoming
// data.
static void
ecos_usbeth_rx_callback(struct urb* urb)
{
ecos_usbeth* usbeth = (ecos_usbeth*) urb->context;
struct net_device* net = usbeth->net_dev;
struct sk_buff* skb;
int len;
int res;
 
if (0 != urb->status) {
// This happens numerous times during a disconnect. Do not
// issue a warning, but do clear the status field or things
// get confused when resubmitting.
//
// Some host hardware does not distinguish between CRC errors
// (very rare) and timeouts (perfectly normal). Do not
// increment the error count if it might have been a timeout.
if (USB_ST_CRC != urb->status) {
usbeth->stats.rx_errors++;
}
urb->status = 0;
} else if (2 > urb->actual_length) {
// With some hardware the target may have to send a bogus
// first packet. Just ignore those.
 
} else {
len = usbeth->rx_buffer[0] + (usbeth->rx_buffer[1] << 8);
if (len > (urb->actual_length - 2)) {
usbeth->stats.rx_errors++;
usbeth->stats.rx_length_errors++;
printk("ecos_usbeth: warning, packet size mismatch, got %d bytes, expected %d\n",
urb->actual_length, len);
} else {
skb = dev_alloc_skb(len + 2);
if ((struct sk_buff*)0 == skb) {
printk("ecos_usbeth: failed to alloc skb, dropping packet\n");
usbeth->stats.rx_dropped++;
} else {
#if 0
{
int i;
printk("--------------------------------------------------------------\n");
printk("ecos_usbeth RX: total size %d\n", len);
for (i = 0; (i < len) && (i < 128); i+= 8) {
printk("rx %x %x %x %x %x %x %x %x\n",
usbeth->rx_buffer[i+0], usbeth->rx_buffer[i+1], usbeth->rx_buffer[i+2], usbeth->rx_buffer[i+3],
usbeth->rx_buffer[i+4], usbeth->rx_buffer[i+5], usbeth->rx_buffer[i+6], usbeth->rx_buffer[i+7]);
}
printk("--------------------------------------------------------------\n");
}
#endif
skb->dev = net;
eth_copy_and_sum(skb, &(usbeth->rx_buffer[2]), len, 0);
skb_put(skb, len);
skb->protocol = eth_type_trans(skb, net);
netif_rx(skb);
usbeth->stats.rx_packets++;
usbeth->stats.rx_bytes += len;
}
}
}
 
if (0 != netif_running(net)) {
res = usb_submit_urb(&(usbeth->rx_urb));
if (0 != res) {
printk("ecos_usbeth: failed to restart USB receives after packet, %d\n", res);
}
}
}
 
// start_tx().
// Transmit a single packet. The relevant USB protocol requires a
// 2-byte length field at the start, the incoming buffer has no space
// for this, and the URB API does not support any form of
// scatter/gather. Therefore unfortunately the whole packet has to be
// copied. The callback function is specified when the URB is filled
// in by probe().
static void
ecos_usbeth_tx_callback(struct urb* urb)
{
ecos_usbeth* usbeth = (ecos_usbeth*) urb->context;
spin_lock(&usbeth->usb_lock);
if (0 != netif_running(usbeth->net_dev)) {
netif_wake_queue(usbeth->net_dev);
}
spin_unlock(&usbeth->usb_lock);
}
 
static int
ecos_usbeth_start_tx(struct sk_buff* skb, struct net_device* net)
{
ecos_usbeth* usbeth = (ecos_usbeth*) net->priv;
int res;
 
if ((skb->len + 2) > ECOS_USBETH_MAXTU) {
printk("ecos_usbeth: oversized packet of %d bytes\n", skb->len);
return 0;
}
 
if (netif_queue_stopped(net)) {
// Another transmission already in progress.
// USB bulk operations should complete within 5s.
int current_delay = jiffies - net->trans_start;
if (current_delay < (5 * HZ)) {
return 1;
} else {
// There has been a timeout. Discard this message.
//printk("transmission timed out\n");
usbeth->stats.tx_errors++;
dev_kfree_skb(skb);
return 0;
}
}
 
spin_lock(&usbeth->usb_lock);
usbeth->tx_buffer[0] = skb->len & 0x00FF;
usbeth->tx_buffer[1] = (skb->len >> 8) & 0x00FF;
memcpy(&(usbeth->tx_buffer[2]), skb->data, skb->len);
usbeth->tx_urb.transfer_buffer_length = skb->len + 2;
 
// Some targets are unhappy about receiving 0-length packets, not
// just sending them.
if (0 == (usbeth->tx_urb.transfer_buffer_length % 64)) {
usbeth->tx_urb.transfer_buffer_length++;
}
#if 0
{
int i;
printk("--------------------------------------------------------------\n");
printk("ecos_usbeth start_tx: len %d\n", skb->len + 2);
for (i = 0; (i < (skb->len + 2)) && (i < 128); i+= 8) {
printk("tx %x %x %x %x %x %x %x %x\n",
usbeth->tx_buffer[i], usbeth->tx_buffer[i+1], usbeth->tx_buffer[i+2], usbeth->tx_buffer[i+3],
usbeth->tx_buffer[i+4], usbeth->tx_buffer[i+5], usbeth->tx_buffer[i+6], usbeth->tx_buffer[i+7]);
}
printk("--------------------------------------------------------------\n");
}
#endif
res = usb_submit_urb(&(usbeth->tx_urb));
if (0 == res) {
netif_stop_queue(net);
net->trans_start = jiffies;
usbeth->stats.tx_packets++;
usbeth->stats.tx_bytes += skb->len;
} else {
printk("ecos_usbeth: failed to start USB packet transmission, %d\n", res);
usbeth->stats.tx_errors++;
}
spin_unlock(&usbeth->usb_lock);
dev_kfree_skb(skb);
return 0;
}
 
 
// set_rx_mode()
// Invoked by the network stack to enable/disable promiscuous mode or
// for multicasting. The latter is not yet supported on the target
// side. The former involves a USB control message. The main call
// is not allowed to block.
static void
ecos_usbeth_set_rx_mode_callback(struct urb* urb)
{
kfree(urb->setup_packet);
usb_free_urb(urb);
}
 
static void
ecos_usbeth_set_rx_mode(struct net_device* net)
{
ecos_usbeth* usbeth = (ecos_usbeth*) net->priv;
__u16 promiscuous = net->flags & IFF_PROMISC;
int res;
if (promiscuous != usbeth->target_promiscuous) {
devrequest* req;
urb_t* urb;
 
urb = usb_alloc_urb(0);
if ((urb_t*)0 == urb) {
return;
}
req = kmalloc(sizeof(devrequest), GFP_KERNEL);
if ((devrequest*)0 == req) {
usb_free_urb(urb);
return;
}
req->requesttype = USB_TYPE_CLASS | USB_RECIP_DEVICE;
req->request = ECOS_USBETH_CONTROL_SET_PROMISCUOUS_MODE;
req->value = cpu_to_le16p(&promiscuous);
req->index = 0;
req->length = 0;
 
FILL_CONTROL_URB(urb,
usbeth->usb_dev,
usb_sndctrlpipe(usbeth->usb_dev, 0),
(unsigned char*) req,
(void*) 0,
0,
&ecos_usbeth_set_rx_mode_callback,
(void*) usbeth);
res = usb_submit_urb(urb);
if (0 != res) {
kfree(req);
usb_free_urb(urb);
} else {
usbeth->target_promiscuous = promiscuous;
}
}
}
 
// netdev_stats()
// Supply the current network statistics. These are held in
// the stats field of the ecos_usbeth structure
static struct net_device_stats*
ecos_usbeth_netdev_stats(struct net_device* net)
{
ecos_usbeth* usbeth = (ecos_usbeth*) net->priv;
return &(usbeth->stats);
}
 
// ioctl()
// Currently none of the network ioctl()'s are supported
static int
ecos_usbeth_ioctl(struct net_device* net, struct ifreq* request, int command)
{
return -EINVAL;
}
 
// probe().
// This is invoked by the generic USB code when a new device has
// been detected and its configuration details have been extracted
// and stored in the usbdev structure. The interface_id specifies
// a specific USB interface, to cope with multifunction peripherals.
//
// FIXME; right now this code only copes with simple enumeration data.
// OK, to be really honest it just looks for the vendor and device ids
// in the simple test cases and ignores everything else.
//
// On success it should return a non-NULL pointer, which happens to be
// a newly allocated ecos_usbeth structure. This will get passed to
// the disconnect function. Filling in the ecos_usbeth structure will,
// amongst other things, register this as a network device driver.
// The MAC address is obtained from the peripheral via a control
// request.
 
static void*
ecos_usbeth_probe(struct usb_device* usbdev, unsigned int interface_id)
{
struct net_device* net;
ecos_usbeth* usbeth;
int res;
unsigned char MAC[6];
unsigned char dummy[1];
int tx_endpoint = -1;
int rx_endpoint = -1;
const ecos_usbeth_impl* impl;
int found_impl = 0;
 
// See if this is the correct driver for this USB peripheral.
impl = ecos_usbeth_implementations;
while (impl->name != NULL) {
if ((usbdev->descriptor.idVendor != impl->vendor) ||
(usbdev->descriptor.idProduct != impl->id)) {
found_impl = 1;
break;
}
impl++;
}
if (! found_impl) {
return (void*) 0;
}
 
// For now only support USB-ethernet peripherals consisting of a single
// configuration, with a single interface, with two bulk endpoints.
if ((1 != usbdev->descriptor.bNumConfigurations) ||
(1 != usbdev->config[0].bNumInterfaces) ||
(2 != usbdev->config[0].interface[0].altsetting->bNumEndpoints)) {
return (void*) 0;
}
if ((0 == (usbdev->config[0].interface[0].altsetting->endpoint[0].bEndpointAddress & USB_DIR_IN)) &&
(0 != (usbdev->config[0].interface[0].altsetting->endpoint[1].bEndpointAddress & USB_DIR_IN))) {
tx_endpoint = usbdev->config[0].interface[0].altsetting->endpoint[0].bEndpointAddress;
rx_endpoint = usbdev->config[0].interface[0].altsetting->endpoint[1].bEndpointAddress & ~USB_DIR_IN;
}
if ((0 != (usbdev->config[0].interface[0].altsetting->endpoint[0].bEndpointAddress & USB_DIR_IN)) &&
(0 == (usbdev->config[0].interface[0].altsetting->endpoint[1].bEndpointAddress & USB_DIR_IN))) {
tx_endpoint = usbdev->config[0].interface[0].altsetting->endpoint[1].bEndpointAddress;
rx_endpoint = usbdev->config[0].interface[0].altsetting->endpoint[0].bEndpointAddress & ~USB_DIR_IN;
}
if (-1 == tx_endpoint) {
return (void*) 0;
}
res = usb_set_configuration(usbdev, usbdev->config[0].bConfigurationValue);
if (0 != res) {
printk("ecos_usbeth: failed to set configuration, %d\n", res);
return (void*) 0;
}
res = usb_control_msg(usbdev,
usb_rcvctrlpipe(usbdev, 0),
ECOS_USBETH_CONTROL_GET_MAC_ADDRESS,
USB_TYPE_CLASS | USB_RECIP_DEVICE | USB_DIR_IN,
0,
0,
(void*) MAC,
6,
5 * HZ);
if (6 != res) {
printk("ecos_usbeth: failed to get MAC address, %d\n", res);
return (void*) 0;
}
res = usb_control_msg(usbdev,
usb_sndctrlpipe(usbdev, 0), // pipe
ECOS_USBETH_CONTROL_SET_PROMISCUOUS_MODE, // request
USB_TYPE_CLASS | USB_RECIP_DEVICE, // requesttype
0, // value
0, // index
(void*) dummy, // data
0, // size
5 * HZ); // timeout
if (0 != res) {
printk("ecos_usbeth: failed to disable promiscous mode, %d\n", res);
}
usbeth = (ecos_usbeth*) kmalloc(sizeof(ecos_usbeth), GFP_KERNEL);
if ((ecos_usbeth*)0 == usbeth) {
printk("ecos_usbeth: failed to allocate memory for usbeth data structure\n");
return (void*) 0;
}
memset(usbeth, 0, sizeof(ecos_usbeth));
net = init_etherdev(0, 0);
if ((struct net_device*) 0 == net) {
kfree(usbeth);
printk("ecos_usbeth: failed to allocate memory for net data structure\n");
return (void*) 0;
}
 
usbeth->usb_lock = SPIN_LOCK_UNLOCKED;
usbeth->usb_dev = usbdev;
FILL_BULK_URB(&(usbeth->tx_urb), usbdev, usb_sndbulkpipe(usbdev, tx_endpoint),
usbeth->tx_buffer, ECOS_USBETH_MAXTU, &ecos_usbeth_tx_callback, (void*) usbeth);
FILL_BULK_URB(&(usbeth->rx_urb), usbdev, usb_rcvbulkpipe(usbdev, rx_endpoint),
usbeth->rx_buffer, ECOS_USBETH_MAXTU, &ecos_usbeth_rx_callback, (void*) usbeth);
usbeth->net_dev = net;
usbeth->target_promiscuous = 0;
net->priv = (void*) usbeth;
net->open = &ecos_usbeth_open;
net->stop = &ecos_usbeth_close;
net->do_ioctl = &ecos_usbeth_ioctl;
net->hard_start_xmit = &ecos_usbeth_start_tx;
net->set_multicast_list = &ecos_usbeth_set_rx_mode;
net->get_stats = &ecos_usbeth_netdev_stats;
net->mtu = 1500; // ECOS_USBETH_MAXTU - 2;
memcpy(net->dev_addr, MAC, 6);
printk("eCos-based USB ethernet peripheral active at %s\n", net->name);
MOD_INC_USE_COUNT;
return (void*) usbeth;
}
 
// disconnect().
// Invoked after probe() has recognized a device but that device
// has gone away.
static void
ecos_usbeth_disconnect(struct usb_device* usbdev, void* data)
{
ecos_usbeth* usbeth = (ecos_usbeth*) data;
if (!usbeth) {
printk("ecos_usbeth: warning, disconnecting unconnected device\n");
return;
}
if (0 != netif_running(usbeth->net_dev)) {
ecos_usbeth_close(usbeth->net_dev);
}
unregister_netdev(usbeth->net_dev);
if (-EINPROGRESS == usbeth->rx_urb.status) {
usb_unlink_urb(&(usbeth->rx_urb));
}
if (-EINPROGRESS == usbeth->tx_urb.status) {
usb_unlink_urb(&(usbeth->tx_urb));
}
kfree(usbeth);
MOD_DEC_USE_COUNT;
}
 
static struct usb_driver ecos_usbeth_driver = {
name: "ecos_usbeth",
probe: ecos_usbeth_probe,
disconnect: ecos_usbeth_disconnect,
};
 
// init()
// Called when the module is loaded. It just registers the device with
// the generic USB code. Nothing else can really be done until
// the USB code detects that a device has been attached.
int __init
ecos_usbeth_init(void)
{
printk("eCos USB-ethernet device driver\n");
return usb_register(&ecos_usbeth_driver);
}
 
// exit()
// Called when the module is unloaded. disconnect() will be
// invoked if appropriate.
void __exit
ecos_usbeth_exit(void)
{
usb_deregister(&ecos_usbeth_driver);
}
 
module_init(ecos_usbeth_init);
module_exit(ecos_usbeth_exit);
/COPYING
0,0 → 1,340
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
 
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59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:
 
a) Accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software interchange; or,
 
b) Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
 
c) Accompany it with the information you received as to the offer
to distribute corresponding source code. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form with such
an offer, in accord with Subsection b above.)
 
The source code for a work means the preferred form of the work for
making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable. However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
 
If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
 
5. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
 
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.
 
7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
 
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.
 
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
 
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
 
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
 
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.
 
10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
 
NO WARRANTY
 
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
 
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
 
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
 
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
 
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
 
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 19yy <name of author>
 
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
 
 
Also add information on how to contact you by electronic and paper mail.
 
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
 
Gnomovision version 69, Copyright (C) 19yy name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
 
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
 
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
 
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
 
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
 
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.
/Makefile
0,0 → 1,95
#
# Makefile for the Linux device driver for eCos USB-ethernet
# devices. This makefile has been cloned from the one in
# /usr/src/linux-2.2.16/drivers/usb
#
 
# This makefile will chain to the Linux makefile if appropriate.
# The toplevel Linux makefile sets the variable KERNELRELEASE
ifeq (,$(KERNELRELEASE))
 
default:
make -C /usr/src/linux SUBDIRS=$(shell pwd) modules
 
modules: default
 
modules_install:
@echo Support for installing this module not yet implemented.
 
else
 
# A recursive invocation of this makefile from the Linux one.
 
# Build this driver as a module.
CONFIG_USB_ECOS_USBETH = m
 
# Subdirs.
 
SUB_DIRS :=
MOD_SUB_DIRS := $(SUB_DIRS)
MOD_IN_SUB_DIRS := $(SUB_DIRS)
ALL_SUB_DIRS := $(SUB_DIRS)
 
# The target object and module list name.
 
O_TARGET :=
M_OBJS :=
O_OBJS :=
MOD_LIST_NAME := ECOS_USBETH_MODULE
 
# Objects that export symbols.
 
export-objs :=
 
# Multipart objects.
 
list-multi :=
 
# Optional parts of multipart objects.
 
# Object file lists.
 
obj-y :=
obj-m :=
obj-n :=
obj- :=
 
# Object files in subdirectories
 
# Each configuration option enables a list of files.
 
obj-$(CONFIG_USB_ECOS_USBETH) += ecos_usbeth.o
 
# Extract lists of the multi-part drivers.
# The 'int-*' lists are the intermediate files used to build the multi's.
 
multi-y := $(filter $(list-multi), $(obj-y))
multi-m := $(filter $(list-multi), $(obj-m))
int-y := $(sort $(foreach m, $(multi-y), $($(basename $(m))-objs)))
int-m := $(sort $(foreach m, $(multi-m), $($(basename $(m))-objs)))
 
# Files that are both resident and modular: remove from modular.
 
obj-m := $(filter-out $(obj-y), $(obj-m))
int-m := $(filter-out $(int-y), $(int-m))
 
# Take multi-part drivers out of obj-y and put components in.
 
obj-y := $(filter-out $(list-multi), $(obj-y)) $(int-y)
 
# Translate to Rules.make lists.
 
O_OBJS := $(sort $(filter-out $(export-objs), $(obj-y)))
OX_OBJS := $(sort $(filter $(export-objs), $(obj-y)))
M_OBJS := $(sort $(filter-out $(export-objs), $(obj-m)))
MX_OBJS := $(sort $(filter $(export-objs), $(obj-m)))
MI_OBJS := $(sort $(filter-out $(export-objs), $(int-m)))
MIX_OBJS := $(sort $(filter $(export-objs), $(int-m)))
 
# The global Rules.make.
 
include $(TOPDIR)/Rules.make
 
# Link rules for multi-part drivers.
 
endif

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