linux_dsm_epyc7002/drivers/usb/net/cdc_ether.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

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/*
* CDC Ethernet based networking peripherals
* Copyright (C) 2003-2005 by David Brownell
* Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
*
* 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 DEBUG // error path messages, extra info
// #define VERBOSE // more; success messages
#include <linux/module.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ctype.h>
#include <linux/ethtool.h>
#include <linux/workqueue.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/usb/cdc.h>
#include "usbnet.h"
#if defined(CONFIG_USB_NET_RNDIS_HOST) || defined(CONFIG_USB_NET_RNDIS_HOST_MODULE)
static int is_rndis(struct usb_interface_descriptor *desc)
{
return desc->bInterfaceClass == USB_CLASS_COMM
&& desc->bInterfaceSubClass == 2
&& desc->bInterfaceProtocol == 0xff;
}
static int is_activesync(struct usb_interface_descriptor *desc)
{
return desc->bInterfaceClass == USB_CLASS_MISC
&& desc->bInterfaceSubClass == 1
&& desc->bInterfaceProtocol == 1;
}
#else
#define is_rndis(desc) 0
#define is_activesync(desc) 0
#endif
/*
* probes control interface, claims data interface, collects the bulk
* endpoints, activates data interface (if needed), maybe sets MTU.
* all pure cdc, except for certain firmware workarounds, and knowing
* that rndis uses one different rule.
*/
int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
{
u8 *buf = intf->cur_altsetting->extra;
int len = intf->cur_altsetting->extralen;
struct usb_interface_descriptor *d;
struct cdc_state *info = (void *) &dev->data;
int status;
int rndis;
struct usb_driver *driver = driver_of(intf);
if (sizeof dev->data < sizeof *info)
return -EDOM;
/* expect strict spec conformance for the descriptors, but
* cope with firmware which stores them in the wrong place
*/
if (len == 0 && dev->udev->actconfig->extralen) {
/* Motorola SB4100 (and others: Brad Hards says it's
* from a Broadcom design) put CDC descriptors here
*/
buf = dev->udev->actconfig->extra;
len = dev->udev->actconfig->extralen;
if (len)
dev_dbg(&intf->dev,
"CDC descriptors on config\n");
}
/* this assumes that if there's a non-RNDIS vendor variant
* of cdc-acm, it'll fail RNDIS requests cleanly.
*/
rndis = is_rndis(&intf->cur_altsetting->desc)
|| is_activesync(&intf->cur_altsetting->desc);
memset(info, 0, sizeof *info);
info->control = intf;
while (len > 3) {
if (buf [1] != USB_DT_CS_INTERFACE)
goto next_desc;
/* use bDescriptorSubType to identify the CDC descriptors.
* We expect devices with CDC header and union descriptors.
* For CDC Ethernet we need the ethernet descriptor.
* For RNDIS, ignore two (pointless) CDC modem descriptors
* in favor of a complicated OID-based RPC scheme doing what
* CDC Ethernet achieves with a simple descriptor.
*/
switch (buf [2]) {
case USB_CDC_HEADER_TYPE:
if (info->header) {
dev_dbg(&intf->dev, "extra CDC header\n");
goto bad_desc;
}
info->header = (void *) buf;
if (info->header->bLength != sizeof *info->header) {
dev_dbg(&intf->dev, "CDC header len %u\n",
info->header->bLength);
goto bad_desc;
}
break;
case USB_CDC_ACM_TYPE:
/* paranoia: disambiguate a "real" vendor-specific
* modem interface from an RNDIS non-modem.
*/
if (rndis) {
struct usb_cdc_acm_descriptor *d;
d = (void *) buf;
if (d->bmCapabilities) {
dev_dbg(&intf->dev,
"ACM capabilities %02x, "
"not really RNDIS?\n",
d->bmCapabilities);
goto bad_desc;
}
}
break;
case USB_CDC_UNION_TYPE:
if (info->u) {
dev_dbg(&intf->dev, "extra CDC union\n");
goto bad_desc;
}
info->u = (void *) buf;
if (info->u->bLength != sizeof *info->u) {
dev_dbg(&intf->dev, "CDC union len %u\n",
info->u->bLength);
goto bad_desc;
}
/* we need a master/control interface (what we're
* probed with) and a slave/data interface; union
* descriptors sort this all out.
*/
info->control = usb_ifnum_to_if(dev->udev,
info->u->bMasterInterface0);
info->data = usb_ifnum_to_if(dev->udev,
info->u->bSlaveInterface0);
if (!info->control || !info->data) {
dev_dbg(&intf->dev,
"master #%u/%p slave #%u/%p\n",
info->u->bMasterInterface0,
info->control,
info->u->bSlaveInterface0,
info->data);
goto bad_desc;
}
if (info->control != intf) {
dev_dbg(&intf->dev, "bogus CDC Union\n");
/* Ambit USB Cable Modem (and maybe others)
* interchanges master and slave interface.
*/
if (info->data == intf) {
info->data = info->control;
info->control = intf;
} else
goto bad_desc;
}
/* a data interface altsetting does the real i/o */
d = &info->data->cur_altsetting->desc;
if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
dev_dbg(&intf->dev, "slave class %u\n",
d->bInterfaceClass);
goto bad_desc;
}
break;
case USB_CDC_ETHERNET_TYPE:
if (info->ether) {
dev_dbg(&intf->dev, "extra CDC ether\n");
goto bad_desc;
}
info->ether = (void *) buf;
if (info->ether->bLength != sizeof *info->ether) {
dev_dbg(&intf->dev, "CDC ether len %u\n",
info->ether->bLength);
goto bad_desc;
}
dev->hard_mtu = le16_to_cpu(
info->ether->wMaxSegmentSize);
/* because of Zaurus, we may be ignoring the host
* side link address we were given.
*/
break;
}
next_desc:
len -= buf [0]; /* bLength */
buf += buf [0];
}
/* Microsoft ActiveSync based RNDIS devices lack the CDC descriptors,
* so we'll hard-wire the interfaces and not check for descriptors.
*/
if (is_activesync(&intf->cur_altsetting->desc) && !info->u) {
info->control = usb_ifnum_to_if(dev->udev, 0);
info->data = usb_ifnum_to_if(dev->udev, 1);
if (!info->control || !info->data) {
dev_dbg(&intf->dev,
"activesync: master #0/%p slave #1/%p\n",
info->control,
info->data);
goto bad_desc;
}
} else if (!info->header || !info->u || (!rndis && !info->ether)) {
dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
info->header ? "" : "header ",
info->u ? "" : "union ",
info->ether ? "" : "ether ");
goto bad_desc;
}
/* claim data interface and set it up ... with side effects.
* network traffic can't flow until an altsetting is enabled.
*/
status = usb_driver_claim_interface(driver, info->data, dev);
if (status < 0)
return status;
status = usbnet_get_endpoints(dev, info->data);
if (status < 0) {
/* ensure immediate exit from usbnet_disconnect */
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver, info->data);
return status;
}
/* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
dev->status = NULL;
if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
struct usb_endpoint_descriptor *desc;
dev->status = &info->control->cur_altsetting->endpoint [0];
desc = &dev->status->desc;
if (!usb_endpoint_is_int_in(desc)
|| (le16_to_cpu(desc->wMaxPacketSize)
< sizeof(struct usb_cdc_notification))
|| !desc->bInterval) {
dev_dbg(&intf->dev, "bad notification endpoint\n");
dev->status = NULL;
}
}
if (rndis && !dev->status) {
dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver, info->data);
return -ENODEV;
}
return 0;
bad_desc:
dev_info(&dev->udev->dev, "bad CDC descriptors\n");
return -ENODEV;
}
EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
{
struct cdc_state *info = (void *) &dev->data;
struct usb_driver *driver = driver_of(intf);
/* disconnect master --> disconnect slave */
if (intf == info->control && info->data) {
/* ensure immediate exit from usbnet_disconnect */
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver, info->data);
info->data = NULL;
}
/* and vice versa (just in case) */
else if (intf == info->data && info->control) {
/* ensure immediate exit from usbnet_disconnect */
usb_set_intfdata(info->control, NULL);
usb_driver_release_interface(driver, info->control);
info->control = NULL;
}
}
EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
/*-------------------------------------------------------------------------
*
* Communications Device Class, Ethernet Control model
*
* Takes two interfaces. The DATA interface is inactive till an altsetting
* is selected. Configuration data includes class descriptors. There's
* an optional status endpoint on the control interface.
*
* This should interop with whatever the 2.4 "CDCEther.c" driver
* (by Brad Hards) talked with, with more functionality.
*
*-------------------------------------------------------------------------*/
static void dumpspeed(struct usbnet *dev, __le32 *speeds)
{
if (netif_msg_timer(dev))
devinfo(dev, "link speeds: %u kbps up, %u kbps down",
__le32_to_cpu(speeds[0]) / 1000,
__le32_to_cpu(speeds[1]) / 1000);
}
static void cdc_status(struct usbnet *dev, struct urb *urb)
{
struct usb_cdc_notification *event;
if (urb->actual_length < sizeof *event)
return;
/* SPEED_CHANGE can get split into two 8-byte packets */
if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
dumpspeed(dev, (__le32 *) urb->transfer_buffer);
return;
}
event = urb->transfer_buffer;
switch (event->bNotificationType) {
case USB_CDC_NOTIFY_NETWORK_CONNECTION:
if (netif_msg_timer(dev))
devdbg(dev, "CDC: carrier %s",
event->wValue ? "on" : "off");
if (event->wValue)
netif_carrier_on(dev->net);
else
netif_carrier_off(dev->net);
break;
case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */
if (netif_msg_timer(dev))
devdbg(dev, "CDC: speed change (len %d)",
urb->actual_length);
if (urb->actual_length != (sizeof *event + 8))
set_bit(EVENT_STS_SPLIT, &dev->flags);
else
dumpspeed(dev, (__le32 *) &event[1]);
break;
/* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
* but there are no standard formats for the response data.
*/
default:
deverr(dev, "CDC: unexpected notification %02x!",
event->bNotificationType);
break;
}
}
static u8 nibble(unsigned char c)
{
if (likely(isdigit(c)))
return c - '0';
c = toupper(c);
if (likely(isxdigit(c)))
return 10 + c - 'A';
return 0;
}
static inline int
get_ethernet_addr(struct usbnet *dev, struct usb_cdc_ether_desc *e)
{
int tmp, i;
unsigned char buf [13];
tmp = usb_string(dev->udev, e->iMACAddress, buf, sizeof buf);
if (tmp != 12) {
dev_dbg(&dev->udev->dev,
"bad MAC string %d fetch, %d\n", e->iMACAddress, tmp);
if (tmp >= 0)
tmp = -EINVAL;
return tmp;
}
for (i = tmp = 0; i < 6; i++, tmp += 2)
dev->net->dev_addr [i] =
(nibble(buf [tmp]) << 4) + nibble(buf [tmp + 1]);
return 0;
}
static int cdc_bind(struct usbnet *dev, struct usb_interface *intf)
{
int status;
struct cdc_state *info = (void *) &dev->data;
status = usbnet_generic_cdc_bind(dev, intf);
if (status < 0)
return status;
status = get_ethernet_addr(dev, info->ether);
if (status < 0) {
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver_of(intf), info->data);
return status;
}
/* FIXME cdc-ether has some multicast code too, though it complains
* in routine cases. info->ether describes the multicast support.
* Implement that here, manipulating the cdc filter as needed.
*/
return 0;
}
static const struct driver_info cdc_info = {
.description = "CDC Ethernet Device",
.flags = FLAG_ETHER,
// .check_connect = cdc_check_connect,
.bind = cdc_bind,
.unbind = usbnet_cdc_unbind,
.status = cdc_status,
};
/*-------------------------------------------------------------------------*/
static const struct usb_device_id products [] = {
/*
* BLACKLIST !!
*
* First blacklist any products that are egregiously nonconformant
* with the CDC Ethernet specs. Minor braindamage we cope with; when
* they're not even trying, needing a separate driver is only the first
* of the differences to show up.
*/
#define ZAURUS_MASTER_INTERFACE \
.bInterfaceClass = USB_CLASS_COMM, \
.bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
.bInterfaceProtocol = USB_CDC_PROTO_NONE
/* SA-1100 based Sharp Zaurus ("collie"), or compatible;
* wire-incompatible with true CDC Ethernet implementations.
* (And, it seems, needlessly so...)
*/
{
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x8004,
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
},
/* PXA-25x based Sharp Zaurii. Note that it seems some of these
* (later models especially) may have shipped only with firmware
* advertising false "CDC MDLM" compatibility ... but we're not
* clear which models did that, so for now let's assume the worst.
*/
{
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x8005, /* A-300 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
}, {
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x8006, /* B-500/SL-5600 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
}, {
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x8007, /* C-700 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
}, {
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x9031, /* C-750 C-760 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
}, {
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x9032, /* SL-6000 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
}, {
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
/* reported with some C860 units */
.idProduct = 0x9050, /* C-860 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
},
/* Olympus has some models with a Zaurus-compatible option.
* R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
*/
{
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x07B4,
.idProduct = 0x0F02, /* R-1000 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
},
/*
* WHITELIST!!!
*
* CDC Ether uses two interfaces, not necessarily consecutive.
* We match the main interface, ignoring the optional device
* class so we could handle devices that aren't exclusively
* CDC ether.
*
* NOTE: this match must come AFTER entries blacklisting devices
* because of bugs/quirks in a given product (like Zaurus, above).
*/
{
USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
USB_CDC_PROTO_NONE),
.driver_info = (unsigned long) &cdc_info,
},
{ }, // END
};
MODULE_DEVICE_TABLE(usb, products);
static struct usb_driver cdc_driver = {
.name = "cdc_ether",
.id_table = products,
.probe = usbnet_probe,
.disconnect = usbnet_disconnect,
.suspend = usbnet_suspend,
.resume = usbnet_resume,
};
static int __init cdc_init(void)
{
BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
< sizeof(struct cdc_state)));
return usb_register(&cdc_driver);
}
module_init(cdc_init);
static void __exit cdc_exit(void)
{
usb_deregister(&cdc_driver);
}
module_exit(cdc_exit);
MODULE_AUTHOR("David Brownell");
MODULE_DESCRIPTION("USB CDC Ethernet devices");
MODULE_LICENSE("GPL");