void cdc_ncm_unbind(struct if_usb_devdata *pipe_data,
struct usb_interface *intf)
{
struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)pipe_data->sedata;
struct usb_driver *usbdrv = driver_of(intf);
if (ctx == NULL)
return; /* no setup */
netif_carrier_off(pipe_data->iod->ndev);
atomic_set(&ctx->stop, 1);
if (hrtimer_active(&ctx->tx_timer))
hrtimer_cancel(&ctx->tx_timer);
tasklet_kill(&ctx->bh);
/* disconnect master --> disconnect slave */
if (intf == ctx->control && ctx->data) {
usb_set_intfdata(ctx->data, NULL);
usb_driver_release_interface(usbdrv, ctx->data);
ctx->data = NULL;
} else if (intf == ctx->data && ctx->control) {
usb_set_intfdata(ctx->control, NULL);
usb_driver_release_interface(usbdrv, ctx->control);
ctx->control = NULL;
}
pipe_data->usbdev = NULL;
pipe_data->disconnected = 1;
pipe_data->state = STATE_SUSPENDED;
usb_set_intfdata(ctx->intf, NULL);
cdc_ncm_free(ctx);
pipe_data->sedata = NULL;
}
static void __devexit cnxthwusb_disconnect(struct usb_interface *intf)
#endif
{
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) )
POS_DEVNODE pDevNode = ptr;
#else
POS_DEVNODE pDevNode = usb_get_intfdata(intf);
#endif
PUSBOSHAL pUsbOsHal;
dbg("%s: %p", __FUNCTION__, pDevNode);
if(!pDevNode)
return;
pUsbOsHal = pDevNode->hwDev;
pDevNode->hwDev = NULL;
#if ( LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) )
usb_set_intfdata (intf, NULL);
#endif
if(!pUsbOsHal)
return;
#if ( LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) )
usb_set_intfdata ((intf == pUsbOsHal->pUsbCommInterface) ? pUsbOsHal->pUsbDataInterface : pUsbOsHal->pUsbCommInterface, NULL);
#endif
pUsbOsHal->bActive = FALSE;
cnxt_serial_remove(pDevNode);
OsUsbFreeUrbs(pUsbOsHal);
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) )
usb_driver_release_interface(&cnxthwusb_driver, pUsbOsHal->pUsbCommInterface);
#else
// XXX needed on older 2.6 kernels ? usb_driver_release_interface(&cnxthwusb_driver, (intf == pUsbOsHal->pUsbCommInterface) ? pUsbOsHal->pUsbDataInterface : pUsbOsHal->pUsbCommInterface);
#endif
OsEventDestroy(pUsbOsHal->ControlRequestEvent);
kfree(pUsbOsHal);
pUsbOsHal = NULL;
kfree(pDevNode);
}
static void acm_disconnect(struct usb_interface *intf)
{
struct acm *acm = usb_get_intfdata(intf);
struct usb_device *usb_dev = interface_to_usbdev(intf);
struct tty_struct *tty;
/* sibling interface is already cleaning up */
if (!acm)
return;
mutex_lock(&open_mutex);
if (acm->country_codes) {
device_remove_file(&acm->control->dev,
&dev_attr_wCountryCodes);
device_remove_file(&acm->control->dev,
&dev_attr_iCountryCodeRelDate);
}
device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
acm->dev = NULL;
usb_set_intfdata(acm->control, NULL);
usb_set_intfdata(acm->data, NULL);
stop_data_traffic(acm);
usb_kill_anchored_urbs(&acm->deferred);
acm_write_buffers_free(acm);
usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer,
acm->ctrl_dma);
acm_read_buffers_free(acm);
if (!acm->combined_interfaces)
usb_driver_release_interface(&acm_driver, intf == acm->control ?
acm->data : acm->control);
if (acm->port.count == 0) {
acm_tty_unregister(acm);
mutex_unlock(&open_mutex);
return;
}
mutex_unlock(&open_mutex);
tty = tty_port_tty_get(&acm->port);
if (tty) {
tty_hangup(tty);
tty_kref_put(tty);
}
}
static void acm_disconnect(struct usb_interface *intf)
{
struct acm *acm = usb_get_intfdata(intf);
struct usb_device *usb_dev = interface_to_usbdev(intf);
int i;
if (!acm || !acm->dev) {
dbg("disconnect on nonexisting interface");
return;
}
mutex_lock(&open_mutex);
if (!usb_get_intfdata(intf)) {
mutex_unlock(&open_mutex);
return;
}
if (acm->country_codes){
device_remove_file(&acm->control->dev,
&dev_attr_wCountryCodes);
device_remove_file(&acm->control->dev,
&dev_attr_iCountryCodeRelDate);
}
device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
acm->dev = NULL;
usb_set_intfdata(acm->control, NULL);
usb_set_intfdata(acm->data, NULL);
stop_data_traffic(acm);
acm_write_buffers_free(acm);
usb_buffer_free(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
for (i = 0; i < acm->rx_buflimit; i++)
usb_buffer_free(usb_dev, acm->readsize, acm->rb[i].base, acm->rb[i].dma);
usb_driver_release_interface(&acm_driver, intf == acm->control ? acm->data : intf);
if (!acm->used) {
acm_tty_unregister(acm);
mutex_unlock(&open_mutex);
return;
}
mutex_unlock(&open_mutex);
if (acm->tty)
tty_hangup(acm->tty);
}
static void xusbatm_unbind(struct usbatm_data *usbatm,
struct usb_interface *intf)
{
struct usb_device *usb_dev = interface_to_usbdev(intf);
int i;
usb_dbg(usbatm, "%s entered\n", __func__);
for (i = 0; i < usb_dev->actconfig->desc.bNumInterfaces; i++) {
struct usb_interface *cur_intf = usb_dev->actconfig->interface[i];
if (cur_intf && (usb_get_intfdata(cur_intf) == usbatm)) {
usb_set_intfdata(cur_intf, NULL);
usb_driver_release_interface(&xusbatm_usb_driver, cur_intf);
}
}
}
static void free_usb_related_resources(struct ua101 *ua,
struct usb_interface *interface)
{
unsigned int i;
free_stream_urbs(&ua->capture);
free_stream_urbs(&ua->playback);
free_stream_buffers(ua, &ua->capture);
free_stream_buffers(ua, &ua->playback);
for (i = 0; i < ARRAY_SIZE(ua->intf); ++i)
if (ua->intf[i]) {
usb_set_intfdata(ua->intf[i], NULL);
if (ua->intf[i] != interface)
usb_driver_release_interface(&ua101_driver,
ua->intf[i]);
}
}
/*
* Disconnect USB device (maybe the MDC800)
*/
static void mdc800_usb_disconnect (struct usb_device *dev,void* ptr)
{
struct mdc800_data* mdc800=(struct mdc800_data*) ptr;
dbg ("(mdc800_usb_disconnect) called");
if (mdc800->state == NOT_CONNECTED)
return;
mdc800->state=NOT_CONNECTED;
usb_unlink_urb (mdc800->irq_urb);
usb_unlink_urb (mdc800->write_urb);
usb_unlink_urb (mdc800->download_urb);
usb_driver_release_interface (&mdc800_usb_driver, &dev->actconfig->interface[1]);
mdc800->dev=0;
info ("Mustek MDC800 disconnected from USB.");
}
static void acm_disconnect(struct usb_interface *intf)
{
struct acm *acm = usb_get_intfdata(intf);
struct usb_device *usb_dev = interface_to_usbdev(intf);
/* sibling interface is already cleaning up */
if (!acm)
return;
mutex_lock(&open_mutex);
if (acm->country_codes){
device_remove_file(&acm->control->dev,
&dev_attr_wCountryCodes);
device_remove_file(&acm->control->dev,
&dev_attr_iCountryCodeRelDate);
}
device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
acm->dev = NULL;
usb_set_intfdata(acm->control, NULL);
usb_set_intfdata(acm->data, NULL);
stop_data_traffic(acm);
acm_write_buffers_free(acm);
usb_buffer_free(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
acm_read_buffers_free(acm);
usb_driver_release_interface(&acm_driver, intf == acm->control ?
acm->data : acm->control);
if (!acm->used) {
acm_tty_unregister(acm);
mutex_unlock(&open_mutex);
return;
}
mutex_unlock(&open_mutex);
if (acm->tty)
tty_hangup(acm->tty);
}
static void usbsvn_disconnect(struct usb_interface *intf)
{
struct usbsvn *svn = usb_get_intfdata(intf);
struct usb_device *usbdev = svn->usbdev;
int dev_id = intf->altsetting->desc.bInterfaceNumber / 2;
struct device *ppdev;
if (svn->devdata[dev_id].disconnected)
return;
svn->usbsvn_connected = 0;
svn->flow_suspend = 1;
dev_err(&usbdev->dev, "%s\n", __func__);
svn->dev_count--;
svn->devdata[dev_id].disconnected = 1;
usb_driver_release_interface(&usbsvn_driver,
svn->devdata[dev_id].data_intf);
ppdev = usbdev->dev.parent->parent;
pm_runtime_forbid(ppdev); /*ehci*/
usb_put_dev(usbdev);
if (svn->dev_count == 0) {
svn->usbdev = NULL;
cancel_delayed_work_sync(&svn->pm_runtime_work);
cancel_work_sync(&svn->post_resume_work);
if (!svn->driver_info) {
/*TODO:check the Phone ACTIVE pin*/
#ifdef CONFIG_SAMSUNG_PHONE_SVNET
if (mc_is_modem_active()) {
svn->reconnect_cnt = 2;
schedule_delayed_work(&svn->try_reconnect_work,
10);
}
#endif
wake_unlock_pm(svn);
}
}
}
int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
{
int status;
struct cdc_state *info = (void *) &dev->data;
BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
< sizeof(struct cdc_state)));
status = usbnet_generic_cdc_bind(dev, intf);
if (status < 0)
return status;
status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
if (status < 0) {
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver_of(intf), info->data);
return status;
}
return 0;
}
static void if_usb_disconnect(struct usb_interface *intf)
{
struct usb_link_device *usb_ld = usb_get_intfdata(intf);
struct usb_device *usbdev = usb_ld->usbdev;
struct link_pm_data *pm_data = usb_ld->link_pm_data;
int dev_id = intf->altsetting->desc.bInterfaceNumber;
struct if_usb_devdata *pipe_data = &usb_ld->devdata[dev_id];
usb_set_intfdata(intf, NULL);
pipe_data->disconnected = 1;
smp_wmb();
wake_up(&usb_ld->l2_wait);
usb_ld->if_usb_connected = 0;
usb_ld->flow_suspend = 1;
dev_dbg(&usbdev->dev, "%s\n", __func__);
usb_ld->dev_count--;
usb_driver_release_interface(&if_usb_driver, pipe_data->data_intf);
usb_kill_anchored_urbs(&pipe_data->reading);
usb_free_urbs(usb_ld, pipe_data);
if (usb_ld->dev_count == 0) {
cancel_delayed_work_sync(&usb_ld->runtime_pm_work);
cancel_delayed_work_sync(&usb_ld->post_resume_work);
cancel_delayed_work_sync(&usb_ld->ld.tx_delayed_work);
usb_put_dev(usbdev);
usb_ld->usbdev = NULL;
if (!has_hub(usb_ld)) {
if (pm_data->root_hub)
pm_runtime_forbid(pm_data->root_hub);
schedule_delayed_work(&usb_ld->wait_enumeration,
WAIT_ENUMURATION_TIMEOUT_JIFFIES);
}
}
}
static void if_usb_disconnect(struct usb_interface *intf)
{
struct usb_link_device *usb_ld = usb_get_intfdata(intf);
struct usb_device *usbdev = usb_ld->usbdev;
int dev_id = intf->altsetting->desc.bInterfaceNumber;
struct if_usb_devdata *pipe_data = &usb_ld->devdata[dev_id];
usb_set_intfdata(intf, NULL);
pipe_data->disconnected = 1;
smp_wmb();
wake_up(&usb_ld->l2_wait);
if (wakelock_held) {
wakelock_held = 0;
wake_unlock(&usb_ld->susplock);
}
usb_ld->if_usb_connected = 0;
usb_ld->flow_suspend = 1;
dev_dbg(&usbdev->dev, "%s\n", __func__);
usb_ld->dev_count--;
usb_driver_release_interface(&if_usb_driver, pipe_data->data_intf);
usb_kill_anchored_urbs(&pipe_data->reading);
usb_free_urbs(usb_ld, pipe_data);
if (usb_ld->dev_count == 0) {
cancel_delayed_work_sync(&usb_ld->runtime_pm_work);
cancel_delayed_work_sync(&usb_ld->post_resume_work);
cancel_delayed_work_sync(&usb_ld->ld.tx_delayed_work);
cancel_work_sync(&usb_ld->disconnect_work);
usb_free_deferred_urbs(usb_ld);
/*wake_unlock(&usb_ld->susplock);*/
usb_put_dev(usbdev);
usb_ld->usbdev = NULL;
}
}
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 = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
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;
}
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;
bool android_rndis_quirk = false;
struct usb_driver *driver = driver_of(intf);
struct usb_cdc_mdlm_desc *desc = NULL;
struct usb_cdc_mdlm_detail_desc *detail = NULL;
if (sizeof dev->data < sizeof *info)
return -EDOM;
if (len == 0 && dev->udev->actconfig->extralen) {
buf = dev->udev->actconfig->extra;
len = dev->udev->actconfig->extralen;
dev_dbg(&intf->dev, "CDC descriptors on config\n");
}
if (len == 0) {
struct usb_host_endpoint *hep;
hep = intf->cur_altsetting->endpoint;
if (hep) {
buf = hep->extra;
len = hep->extralen;
}
if (len)
dev_dbg(&intf->dev,
"CDC descriptors on endpoint\n");
}
rndis = (is_rndis(&intf->cur_altsetting->desc) ||
is_activesync(&intf->cur_altsetting->desc) ||
is_wireless_rndis(&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;
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:
if (rndis) {
struct usb_cdc_acm_descriptor *acm;
acm = (void *) buf;
if (acm->bmCapabilities) {
dev_dbg(&intf->dev,
"ACM capabilities %02x, "
"not really RNDIS?\n",
acm->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;
}
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);
if (rndis) {
android_rndis_quirk = true;
goto next_desc;
}
goto bad_desc;
}
if (info->control != intf) {
dev_dbg(&intf->dev, "bogus CDC Union\n");
if (info->data == intf) {
info->data = info->control;
info->control = intf;
} else
goto bad_desc;
}
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);
break;
case USB_CDC_MDLM_TYPE:
if (desc) {
dev_dbg(&intf->dev, "extra MDLM descriptor\n");
goto bad_desc;
}
desc = (void *)buf;
if (desc->bLength != sizeof(*desc))
goto bad_desc;
if (memcmp(&desc->bGUID, mbm_guid, 16))
goto bad_desc;
break;
case USB_CDC_MDLM_DETAIL_TYPE:
if (detail) {
dev_dbg(&intf->dev, "extra MDLM detail descriptor\n");
goto bad_desc;
}
detail = (void *)buf;
if (detail->bGuidDescriptorType == 0) {
if (detail->bLength < (sizeof(*detail) + 1))
goto bad_desc;
} else
goto bad_desc;
break;
}
next_desc:
len -= buf [0];
buf += buf [0];
}
if (rndis && (!info->u || android_rndis_quirk)) {
info->control = usb_ifnum_to_if(dev->udev, 0);
info->data = usb_ifnum_to_if(dev->udev, 1);
if (!info->control || !info->data || info->control != intf) {
dev_dbg(&intf->dev,
"rndis: 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;
}
status = usb_driver_claim_interface(driver, info->data, dev);
if (status < 0)
return status;
status = usbnet_get_endpoints(dev, info->data);
if (status < 0) {
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver, info->data);
return status;
}
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;
}
int
generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
{
int retval;
struct net_device *net = dev->net;
struct cdc_state *info = (void *) &dev->data;
union {
void *buf;
struct rndis_msg_hdr *header;
struct rndis_init *init;
struct rndis_init_c *init_c;
struct rndis_query *get;
struct rndis_query_c *get_c;
struct rndis_set *set;
struct rndis_set_c *set_c;
struct rndis_halt *halt;
} u;
u32 tmp;
__le32 phym_unspec, *phym;
int reply_len;
unsigned char *bp;
/* we can't rely on i/o from stack working, or stack allocation */
u.buf = kmalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
if (!u.buf)
return -ENOMEM;
retval = usbnet_generic_cdc_bind(dev, intf);
if (retval < 0)
goto fail;
u.init->msg_type = cpu_to_le32(RNDIS_MSG_INIT);
u.init->msg_len = cpu_to_le32(sizeof *u.init);
u.init->major_version = cpu_to_le32(1);
u.init->minor_version = cpu_to_le32(0);
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29))
/* can't we remove this? */
net->change_mtu = NULL;
#endif
/* max transfer (in spec) is 0x4000 at full speed, but for
* TX we'll stick to one Ethernet packet plus RNDIS framing.
* For RX we handle drivers that zero-pad to end-of-packet.
* Don't let userspace change these settings.
*
* NOTE: there still seems to be wierdness here, as if we need
* to do some more things to make sure WinCE targets accept this.
* They default to jumbograms of 8KB or 16KB, which is absurd
* for such low data rates and which is also more than Linux
* can usually expect to allocate for SKB data...
*/
net->hard_header_len += sizeof (struct rndis_data_hdr);
dev->hard_mtu = net->mtu + net->hard_header_len;
dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1);
if (dev->maxpacket == 0) {
netif_dbg(dev, probe, dev->net,
"dev->maxpacket can't be 0\n");
retval = -EINVAL;
goto fail_and_release;
}
dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1);
dev->rx_urb_size &= ~(dev->maxpacket - 1);
u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size);
netdev_attach_ops(net, &rndis_netdev_ops);
retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE);
if (unlikely(retval < 0)) {
/* it might not even be an RNDIS device!! */
dev_err(&intf->dev, "RNDIS init failed, %d\n", retval);
goto fail_and_release;
}
tmp = le32_to_cpu(u.init_c->max_transfer_size);
if (tmp < dev->hard_mtu) {
if (tmp <= net->hard_header_len) {
dev_err(&intf->dev,
"dev can't take %u byte packets (max %u)\n",
dev->hard_mtu, tmp);
retval = -EINVAL;
goto halt_fail_and_release;
}
dev_warn(&intf->dev,
"dev can't take %u byte packets (max %u), "
"adjusting MTU to %u\n",
dev->hard_mtu, tmp, tmp - net->hard_header_len);
dev->hard_mtu = tmp;
net->mtu = dev->hard_mtu - net->hard_header_len;
}
/* REVISIT: peripheral "alignment" request is ignored ... */
dev_dbg(&intf->dev,
"hard mtu %u (%u from dev), rx buflen %Zu, align %d\n",
dev->hard_mtu, tmp, dev->rx_urb_size,
1 << le32_to_cpu(u.init_c->packet_alignment));
/* module has some device initialization code needs to be done right
* after RNDIS_INIT */
if (dev->driver_info->early_init &&
dev->driver_info->early_init(dev) != 0)
goto halt_fail_and_release;
/* Check physical medium */
phym = NULL;
reply_len = sizeof *phym;
retval = rndis_query(dev, intf, u.buf,
RNDIS_OID_GEN_PHYSICAL_MEDIUM,
0, (void **) &phym, &reply_len);
if (retval != 0 || !phym) {
/* OID is optional so don't fail here. */
phym_unspec = cpu_to_le32(RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED);
phym = &phym_unspec;
}
if ((flags & FLAG_RNDIS_PHYM_WIRELESS) &&
le32_to_cpup(phym) != RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) {
netif_dbg(dev, probe, dev->net,
"driver requires wireless physical medium, but device is not\n");
retval = -ENODEV;
goto halt_fail_and_release;
}
if ((flags & FLAG_RNDIS_PHYM_NOT_WIRELESS) &&
le32_to_cpup(phym) == RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) {
netif_dbg(dev, probe, dev->net,
"driver requires non-wireless physical medium, but device is wireless.\n");
retval = -ENODEV;
goto halt_fail_and_release;
}
/* Get designated host ethernet address */
reply_len = ETH_ALEN;
retval = rndis_query(dev, intf, u.buf,
RNDIS_OID_802_3_PERMANENT_ADDRESS,
48, (void **) &bp, &reply_len);
if (unlikely(retval< 0)) {
dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval);
goto halt_fail_and_release;
}
memcpy(net->dev_addr, bp, ETH_ALEN);
memcpy(net->perm_addr, bp, ETH_ALEN);
/* set a nonzero filter to enable data transfers */
memset(u.set, 0, sizeof *u.set);
u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
u.set->msg_len = cpu_to_le32(4 + sizeof *u.set);
u.set->oid = cpu_to_le32(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
u.set->len = cpu_to_le32(4);
u.set->offset = cpu_to_le32((sizeof *u.set) - 8);
*(__le32 *)(u.buf + sizeof *u.set) = cpu_to_le32(RNDIS_DEFAULT_FILTER);
retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE);
if (unlikely(retval < 0)) {
dev_err(&intf->dev, "rndis set packet filter, %d\n", retval);
goto halt_fail_and_release;
}
retval = 0;
kfree(u.buf);
return retval;
halt_fail_and_release:
memset(u.halt, 0, sizeof *u.halt);
u.halt->msg_type = cpu_to_le32(RNDIS_MSG_HALT);
u.halt->msg_len = cpu_to_le32(sizeof *u.halt);
(void) rndis_command(dev, (void *)u.halt, CONTROL_BUFFER_SIZE);
fail_and_release:
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver_of(intf), info->data);
info->data = NULL;
fail:
kfree(u.buf);
return retval;
}
static void smdhsic_disconnect(struct usb_interface *intf)
{
int devid;
struct usb_interface *smd_intf;
struct str_intf_priv *intfpriv;
struct usb_device *device = NULL;
pr_info("%s: Called\n", __func__);
intfpriv = usb_get_intfdata(intf);
if (!intfpriv) {
pr_err("%s: intfpriv is NULL\n", __func__);
goto err_get_intfdata;
}
device = get_usb_device(intfpriv);
devid = GET_DEVID(intfpriv->devid);
pr_debug("%s : devid : %d\n", __func__, devid);
smd_intf = get_usb_intf(intfpriv);
if (!smd_intf) {
pr_err("smd_intf is NULL\n");
goto err_get_usb_intf;
}
if (smd_intf != intf) {
pr_err("smd_intf is not same intf\n");
goto err_mismatched_intf;
}
usb_driver_release_interface(get_usb_driver(intf), smd_intf);
if (!device)
usb_put_dev(device);
switch (devid) {
case FMT_DEV_ID:
pm_runtime_disable(&device->dev);
if (g_usbdev.hsic)
cancel_delayed_work(&g_usbdev.hsic->pm_runtime_work);
smdctl_request_connection_recover(true);
case RAW_DEV_ID:
case RFS_DEV_ID:
case CMD_DEV_ID:
case DOWN_DEV_ID:
if (emu_discon_func[devid])
emu_discon_func[devid](g_usbdev.smd_device[devid]);
else
kfree(intfpriv->data);
break;
default:
pr_warn("%s:Undefined Callback Function\n",
__func__);
}
/* Power on/off kernel-panic workaround,
* if USB suspend cmd was queued in power.work before disconnect,
* reset the runtime PM request value to PM_REQ_NONE
*/
device->dev.power.request = RPM_REQ_NONE;
kfree(intfpriv);
usb_set_intfdata(intf, NULL);
g_usbdev.usbdev = NULL;
g_usbdev.suspended = 0;
g_usbdev.hsic = NULL;
return;
err_mismatched_intf:
err_get_usb_intf:
if (device)
usb_put_dev(device);
err_get_intfdata:
pr_err("release(2) : %p\n", intf);
usb_driver_release_interface(get_usb_driver(intf), intf);
return;
}
int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting)
{
struct cdc_ncm_ctx *ctx;
struct usb_driver *driver;
u8 *buf;
int len;
int temp;
u8 iface_no;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
hrtimer_init(&ctx->tx_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
ctx->tx_timer.function = &cdc_ncm_tx_timer_cb;
ctx->bh.data = (unsigned long)ctx;
ctx->bh.func = cdc_ncm_txpath_bh;
atomic_set(&ctx->stop, 0);
spin_lock_init(&ctx->mtx);
ctx->netdev = dev->net;
/* store ctx pointer in device data field */
dev->data[0] = (unsigned long)ctx;
/* get some pointers */
driver = driver_of(intf);
buf = intf->cur_altsetting->extra;
len = intf->cur_altsetting->extralen;
ctx->udev = dev->udev;
ctx->intf = intf;
/* parse through descriptors associated with control interface */
while ((len > 0) && (buf[0] > 2) && (buf[0] <= len)) {
if (buf[1] != USB_DT_CS_INTERFACE)
goto advance;
switch (buf[2]) {
case USB_CDC_UNION_TYPE:
if (buf[0] < sizeof(*(ctx->union_desc)))
break;
ctx->union_desc =
(const struct usb_cdc_union_desc *)buf;
ctx->control = usb_ifnum_to_if(dev->udev,
ctx->union_desc->bMasterInterface0);
ctx->data = usb_ifnum_to_if(dev->udev,
ctx->union_desc->bSlaveInterface0);
break;
case USB_CDC_ETHERNET_TYPE:
if (buf[0] < sizeof(*(ctx->ether_desc)))
break;
ctx->ether_desc =
(const struct usb_cdc_ether_desc *)buf;
dev->hard_mtu =
le16_to_cpu(ctx->ether_desc->wMaxSegmentSize);
if (dev->hard_mtu < CDC_NCM_MIN_DATAGRAM_SIZE)
dev->hard_mtu = CDC_NCM_MIN_DATAGRAM_SIZE;
else if (dev->hard_mtu > CDC_NCM_MAX_DATAGRAM_SIZE)
dev->hard_mtu = CDC_NCM_MAX_DATAGRAM_SIZE;
break;
case USB_CDC_NCM_TYPE:
if (buf[0] < sizeof(*(ctx->func_desc)))
break;
ctx->func_desc = (const struct usb_cdc_ncm_desc *)buf;
break;
case USB_CDC_MBIM_TYPE:
if (buf[0] < sizeof(*(ctx->mbim_desc)))
break;
ctx->mbim_desc = (const struct usb_cdc_mbim_desc *)buf;
break;
default:
break;
}
advance:
/* advance to next descriptor */
temp = buf[0];
buf += temp;
len -= temp;
}
/* some buggy devices have an IAD but no CDC Union */
if (!ctx->union_desc && intf->intf_assoc && intf->intf_assoc->bInterfaceCount == 2) {
ctx->control = intf;
ctx->data = usb_ifnum_to_if(dev->udev, intf->cur_altsetting->desc.bInterfaceNumber + 1);
dev_dbg(&intf->dev, "CDC Union missing - got slave from IAD\n");
}
/* check if we got everything */
if ((ctx->control == NULL) || (ctx->data == NULL) ||
((!ctx->mbim_desc) && ((ctx->ether_desc == NULL) || (ctx->control != intf))))
goto error;
/* claim data interface, if different from control */
if (ctx->data != ctx->control) {
temp = usb_driver_claim_interface(driver, ctx->data, dev);
if (temp)
goto error;
}
iface_no = ctx->data->cur_altsetting->desc.bInterfaceNumber;
/* reset data interface */
temp = usb_set_interface(dev->udev, iface_no, 0);
if (temp)
goto error2;
/* initialize data interface */
if (cdc_ncm_setup(ctx))
goto error2;
/* configure data interface */
temp = usb_set_interface(dev->udev, iface_no, data_altsetting);
if (temp)
goto error2;
cdc_ncm_find_endpoints(ctx, ctx->data);
cdc_ncm_find_endpoints(ctx, ctx->control);
if ((ctx->in_ep == NULL) || (ctx->out_ep == NULL) ||
(ctx->status_ep == NULL))
goto error2;
dev->net->ethtool_ops = &cdc_ncm_ethtool_ops;
usb_set_intfdata(ctx->data, dev);
usb_set_intfdata(ctx->control, dev);
usb_set_intfdata(ctx->intf, dev);
if (ctx->ether_desc) {
temp = usbnet_get_ethernet_addr(dev, ctx->ether_desc->iMACAddress);
if (temp)
goto error2;
dev_info(&dev->udev->dev, "MAC-Address: %pM\n", dev->net->dev_addr);
}
dev->in = usb_rcvbulkpipe(dev->udev,
ctx->in_ep->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
dev->out = usb_sndbulkpipe(dev->udev,
ctx->out_ep->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
dev->status = ctx->status_ep;
dev->rx_urb_size = ctx->rx_max;
ctx->tx_speed = ctx->rx_speed = 0;
return 0;
error2:
usb_set_intfdata(ctx->control, NULL);
usb_set_intfdata(ctx->data, NULL);
if (ctx->data != ctx->control)
usb_driver_release_interface(driver, ctx->data);
error:
cdc_ncm_free((struct cdc_ncm_ctx *)dev->data[0]);
dev->data[0] = 0;
dev_info(&dev->udev->dev, "bind() failure\n");
return -ENODEV;
}
static void smdhsic_disconnect(struct usb_interface *intf)
{
int devid;
struct usb_interface *smd_intf;
struct str_intf_priv *intfpriv;
struct usb_device *device = NULL;
pr_info("%s: Called\n", __func__);
intfpriv = usb_get_intfdata(intf);
if (!intfpriv) {
pr_err("%s: intfpriv is NULL\n", __func__);
goto err_get_intfdata;
}
device = get_usb_device(intfpriv);
devid = GET_DEVID(intfpriv->devid);
pr_debug("%s : devid : %d\n", __func__, devid);
smd_intf = get_usb_intf(intfpriv);
if (!smd_intf) {
pr_err("smd_intf is NULL\n");
goto err_get_usb_intf;
}
if (smd_intf != intf) {
pr_err("smd_intf is not same intf\n");
goto err_mismatched_intf;
}
usb_driver_release_interface(get_usb_driver(intf), smd_intf);
if (!device)
usb_put_dev(device);
pm_runtime_disable(&device->dev);
if (g_usbdev.hsic)
cancel_delayed_work(&g_usbdev.hsic->pm_runtime_work);
switch (devid) {
case FMT_DEV_ID:
flush_txurb(&g_usbdev.ipc_urbq);
flush_txurb(&g_usbdev.data_urbq);
smdctl_request_connection_recover(true);
case RAW_DEV_ID:
case RFS_DEV_ID:
case CMD_DEV_ID:
case DOWN_DEV_ID:
if (emu_discon_func[devid])
emu_discon_func[devid](g_usbdev.smd_device[devid]);
else
kfree(intfpriv->data);
break;
default:
pr_warn("%s:Undefined Callback Function\n",
__func__);
}
/* to prevent sleep at connection recover
* when, usb suspend and recover routine overlap
* it makes huge delay on modem reset
*/
wake_lock_timeout(&g_usbdev.txwake, 20*HZ);
kfree(intfpriv);
usb_set_intfdata(intf, NULL);
g_usbdev.usbdev = NULL;
g_usbdev.suspended = 0;
g_usbdev.hsic = NULL;
return;
err_mismatched_intf:
err_get_usb_intf:
if (!device)
usb_put_dev(device);
err_get_intfdata:
pr_err("release(2) : %p\n", intf);
usb_driver_release_interface(get_usb_driver(intf), intf);
return;
}
/*
* 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;
bool android_rndis_quirk = false;
struct usb_driver *driver = driver_of(intf);
struct usb_cdc_mdlm_desc *desc = NULL;
struct usb_cdc_mdlm_detail_desc *detail = NULL;
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;
dev_dbg(&intf->dev, "CDC descriptors on config\n");
}
/* Maybe CDC descriptors are after the endpoint? This bug has
* been seen on some 2Wire Inc RNDIS-ish products.
*/
if (len == 0) {
struct usb_host_endpoint *hep;
hep = intf->cur_altsetting->endpoint;
if (hep) {
buf = hep->extra;
len = hep->extralen;
}
if (len)
dev_dbg(&intf->dev,
"CDC descriptors on endpoint\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) ||
is_wireless_rndis(&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 *acm;
acm = (void *) buf;
if (acm->bmCapabilities) {
dev_dbg(&intf->dev,
"ACM capabilities %02x, "
"not really RNDIS?\n",
acm->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);
/* fall back to hard-wiring for RNDIS */
if (rndis) {
android_rndis_quirk = true;
goto next_desc;
}
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;
case USB_CDC_MDLM_TYPE:
if (desc) {
dev_dbg(&intf->dev, "extra MDLM descriptor\n");
goto bad_desc;
}
desc = (void *)buf;
if (desc->bLength != sizeof(*desc))
goto bad_desc;
if (memcmp(&desc->bGUID, mbm_guid, 16))
goto bad_desc;
break;
case USB_CDC_MDLM_DETAIL_TYPE:
if (detail) {
dev_dbg(&intf->dev, "extra MDLM detail descriptor\n");
goto bad_desc;
}
detail = (void *)buf;
if (detail->bGuidDescriptorType == 0) {
if (detail->bLength < (sizeof(*detail) + 1))
goto bad_desc;
} else
goto bad_desc;
break;
}
next_desc:
len -= buf [0]; /* bLength */
buf += buf [0];
}
/* Microsoft ActiveSync based and some regular RNDIS devices lack the
* CDC descriptors, so we'll hard-wire the interfaces and not check
* for descriptors.
*
* Some Android RNDIS devices have a CDC Union descriptor pointing
* to non-existing interfaces. Ignore that and attempt the same
* hard-wired 0 and 1 interfaces.
*/
if (rndis && (!info->u || android_rndis_quirk)) {
info->control = usb_ifnum_to_if(dev->udev, 0);
info->data = usb_ifnum_to_if(dev->udev, 1);
if (!info->control || !info->data || info->control != intf) {
dev_dbg(&intf->dev,
"rndis: 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;
}
/* 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;
bool android_rndis_quirk = false;
struct usb_driver *driver = driver_of(intf);
struct usb_cdc_parsed_header header;
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;
dev_dbg(&intf->dev, "CDC descriptors on config\n");
}
/* Maybe CDC descriptors are after the endpoint? This bug has
* been seen on some 2Wire Inc RNDIS-ish products.
*/
if (len == 0) {
struct usb_host_endpoint *hep;
hep = intf->cur_altsetting->endpoint;
if (hep) {
buf = hep->extra;
len = hep->extralen;
}
if (len)
dev_dbg(&intf->dev,
"CDC descriptors on endpoint\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) ||
is_wireless_rndis(&intf->cur_altsetting->desc));
memset(info, 0, sizeof(*info));
info->control = intf;
cdc_parse_cdc_header(&header, intf, buf, len);
info->u = header.usb_cdc_union_desc;
info->header = header.usb_cdc_header_desc;
info->ether = header.usb_cdc_ether_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);
/* fall back to hard-wiring for RNDIS */
if (rndis) {
android_rndis_quirk = true;
goto skip;
}
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;
}
/* some devices merge these - skip class check */
if (info->control == info->data)
goto skip;
/* 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;
}
skip:
if ( rndis &&
header.usb_cdc_acm_descriptor &&
header.usb_cdc_acm_descriptor->bmCapabilities) {
dev_dbg(&intf->dev,
"ACM capabilities %02x, not really RNDIS?\n",
header.usb_cdc_acm_descriptor->bmCapabilities);
goto bad_desc;
}
if (header.usb_cdc_ether_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.
*/
}
if (header.usb_cdc_mdlm_desc &&
memcmp(header.usb_cdc_mdlm_desc->bGUID, mbm_guid, 16)) {
dev_dbg(&intf->dev, "GUID doesn't match\n");
goto bad_desc;
}
if (header.usb_cdc_mdlm_detail_desc &&
header.usb_cdc_mdlm_detail_desc->bLength <
(sizeof(struct usb_cdc_mdlm_detail_desc) + 1)) {
dev_dbg(&intf->dev, "Descriptor too short\n");
goto bad_desc;
}
/* Microsoft ActiveSync based and some regular RNDIS devices lack the
* CDC descriptors, so we'll hard-wire the interfaces and not check
* for descriptors.
*
* Some Android RNDIS devices have a CDC Union descriptor pointing
* to non-existing interfaces. Ignore that and attempt the same
* hard-wired 0 and 1 interfaces.
*/
if (rndis && (!info->u || android_rndis_quirk)) {
info->control = usb_ifnum_to_if(dev->udev, 0);
info->data = usb_ifnum_to_if(dev->udev, 1);
if (!info->control || !info->data || info->control != intf) {
dev_dbg(&intf->dev,
"rndis: 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.
*/
if (info->data != info->control) {
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);
if (info->data != info->control)
usb_driver_release_interface(driver, info->data);
return status;
}
/* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
if (info->data != info->control)
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;
}
/* Some devices don't initialise properly. In particular
* the packet filter is not reset. There are devices that
* don't do reset all the way. So the packet filter should
* be set to a sane initial value.
*/
usbnet_cdc_update_filter(dev);
return 0;
bad_desc:
dev_info(&dev->udev->dev, "bad CDC descriptors\n");
return -ENODEV;
}
static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
{
int status = -1;
u8 *buf = intf->cur_altsetting->extra;
int len = intf->cur_altsetting->extralen;
struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
struct usb_cdc_union_desc *cdc_union;
struct usb_cdc_ether_desc *cdc_ether;
struct usb_driver *driver = driver_of(intf);
struct qmi_wwan_state *info = (void *)&dev->data;
struct usb_cdc_parsed_header hdr;
BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) <
sizeof(struct qmi_wwan_state)));
/* set up initial state */
info->control = intf;
info->data = intf;
/* and a number of CDC descriptors */
cdc_parse_cdc_header(&hdr, intf, buf, len);
cdc_union = hdr.usb_cdc_union_desc;
cdc_ether = hdr.usb_cdc_ether_desc;
/* Use separate control and data interfaces if we found a CDC Union */
if (cdc_union) {
info->data = usb_ifnum_to_if(dev->udev,
cdc_union->bSlaveInterface0);
if (desc->bInterfaceNumber != cdc_union->bMasterInterface0 ||
!info->data) {
dev_err(&intf->dev,
"bogus CDC Union: master=%u, slave=%u\n",
cdc_union->bMasterInterface0,
cdc_union->bSlaveInterface0);
goto err;
}
}
/* errors aren't fatal - we can live with the dynamic address */
if (cdc_ether) {
dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
}
/* claim data interface and set it up */
if (info->control != info->data) {
status = usb_driver_claim_interface(driver, info->data, dev);
if (status < 0)
goto err;
}
status = qmi_wwan_register_subdriver(dev);
if (status < 0 && info->control != info->data) {
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver, info->data);
}
/* Never use the same address on both ends of the link, even if the
* buggy firmware told us to. Or, if device is assigned the well-known
* buggy firmware MAC address, replace it with a random address,
*/
if (ether_addr_equal(dev->net->dev_addr, default_modem_addr) ||
ether_addr_equal(dev->net->dev_addr, buggy_fw_addr))
eth_hw_addr_random(dev->net);
/* make MAC addr easily distinguishable from an IP header */
if (possibly_iphdr(dev->net->dev_addr)) {
dev->net->dev_addr[0] |= 0x02; /* set local assignment bit */
dev->net->dev_addr[0] &= 0xbf; /* clear "IP" bit */
}
dev->net->netdev_ops = &qmi_wwan_netdev_ops;
err:
return status;
}
/*
* udev, which is used for the firmware downloading, requires we cannot
* block during module_init(). module_init() calls USB probe() which
* is this routine. Due to that we delay actual operation using workqueue
* and return always success here.
*/
static void dvb_usbv2_init_work(struct work_struct *work)
{
int ret;
struct dvb_usb_device *d =
container_of(work, struct dvb_usb_device, probe_work);
d->work_pid = current->pid;
dev_dbg(&d->udev->dev, "%s: work_pid=%d\n", __func__, d->work_pid);
if (d->props->size_of_priv) {
d->priv = kzalloc(d->props->size_of_priv, GFP_KERNEL);
if (!d->priv) {
dev_err(&d->udev->dev, "%s: kzalloc() failed\n",
KBUILD_MODNAME);
ret = -ENOMEM;
goto err_usb_driver_release_interface;
}
}
if (d->props->identify_state) {
const char *name = NULL;
ret = d->props->identify_state(d, &name);
if (ret == 0) {
;
} else if (ret == COLD) {
dev_info(&d->udev->dev,
"%s: found a '%s' in cold state\n",
KBUILD_MODNAME, d->name);
if (!name)
name = d->props->firmware;
ret = dvb_usbv2_download_firmware(d, name);
if (ret == 0) {
/* device is warm, continue initialization */
;
} else if (ret == RECONNECTS_USB) {
/*
* USB core will call disconnect() and then
* probe() as device reconnects itself from the
* USB bus. disconnect() will release all driver
* resources and probe() is called for 'new'
* device. As 'new' device is warm we should
* never go here again.
*/
return;
} else {
/*
* Unexpected error. We must unregister driver
* manually from the device, because device is
* already register by returning from probe()
* with success. usb_driver_release_interface()
* finally calls disconnect() in order to free
* resources.
*/
goto err_usb_driver_release_interface;
}
} else {
goto err_usb_driver_release_interface;
}
}
dev_info(&d->udev->dev, "%s: found a '%s' in warm state\n",
KBUILD_MODNAME, d->name);
ret = dvb_usbv2_init(d);
if (ret < 0)
goto err_usb_driver_release_interface;
dev_info(&d->udev->dev,
"%s: '%s' successfully initialized and connected\n",
KBUILD_MODNAME, d->name);
return;
err_usb_driver_release_interface:
dev_info(&d->udev->dev, "%s: '%s' error while loading driver (%d)\n",
KBUILD_MODNAME, d->name, ret);
usb_driver_release_interface(to_usb_driver(d->intf->dev.driver),
d->intf);
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return;
}
static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
{
int retval;
struct net_device *net = dev->net;
union {
void *buf;
struct rndis_msg_hdr *header;
struct rndis_init *init;
struct rndis_init_c *init_c;
struct rndis_query *get;
struct rndis_query_c *get_c;
struct rndis_set *set;
struct rndis_set_c *set_c;
} u;
u32 tmp;
/* we can't rely on i/o from stack working, or stack allocation */
u.buf = kmalloc(1024, GFP_KERNEL);
if (!u.buf)
return -ENOMEM;
retval = usbnet_generic_cdc_bind(dev, intf);
if (retval < 0)
goto done;
net->hard_header_len += sizeof (struct rndis_data_hdr);
/* initialize; max transfer is 16KB at full speed */
u.init->msg_type = RNDIS_MSG_INIT;
u.init->msg_len = ccpu2(sizeof *u.init);
u.init->major_version = ccpu2(1);
u.init->minor_version = ccpu2(0);
u.init->max_transfer_size = ccpu2(net->mtu + net->hard_header_len);
retval = rndis_command(dev, u.header);
if (unlikely(retval < 0)) {
/* it might not even be an RNDIS device!! */
dev_err(&intf->dev, "RNDIS init failed, %d\n", retval);
fail:
usb_driver_release_interface(driver_of(intf),
((struct cdc_state *)&(dev->data))->data);
goto done;
}
dev->hard_mtu = le32_to_cpu(u.init_c->max_transfer_size);
/* REVISIT: peripheral "alignment" request is ignored ... */
dev_dbg(&intf->dev, "hard mtu %u, align %d\n", dev->hard_mtu,
1 << le32_to_cpu(u.init_c->packet_alignment));
/* get designated host ethernet address */
memset(u.get, 0, sizeof *u.get);
u.get->msg_type = RNDIS_MSG_QUERY;
u.get->msg_len = ccpu2(sizeof *u.get);
u.get->oid = OID_802_3_PERMANENT_ADDRESS;
retval = rndis_command(dev, u.header);
if (unlikely(retval < 0)) {
dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval);
goto fail;
}
tmp = le32_to_cpu(u.get_c->offset);
if (unlikely((tmp + 8) > (1024 - ETH_ALEN)
|| u.get_c->len != ccpu2(ETH_ALEN))) {
dev_err(&intf->dev, "rndis ethaddr off %d len %d ?\n",
tmp, le32_to_cpu(u.get_c->len));
retval = -EDOM;
goto fail;
}
memcpy(net->dev_addr, tmp + (char *)&u.get_c->request_id, ETH_ALEN);
/* set a nonzero filter to enable data transfers */
memset(u.set, 0, sizeof *u.set);
u.set->msg_type = RNDIS_MSG_SET;
u.set->msg_len = ccpu2(4 + sizeof *u.set);
u.set->oid = OID_GEN_CURRENT_PACKET_FILTER;
u.set->len = ccpu2(4);
u.set->offset = ccpu2((sizeof *u.set) - 8);
*(__le32 *)(u.buf + sizeof *u.set) = ccpu2(DEFAULT_FILTER);
retval = rndis_command(dev, u.header);
if (unlikely(retval < 0)) {
dev_err(&intf->dev, "rndis set packet filter, %d\n", retval);
goto fail;
}
retval = 0;
done:
kfree(u.buf);
return retval;
}
static int __devinit cnxthwusb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
#endif
{
int i;
struct usb_interface *pUsbDataInterface, *pUsbCommInterface;
POS_DEVNODE pDevNode = NULL;
PUSBOSHAL pUsbOsHal = NULL;
#if ( LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) )
struct usb_device *pUsbDevice = interface_to_usbdev(intf);
__u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
#endif
#if TARGET_HCF_FAMILY
dbg("%s: pUsbDevice=%p ifnum=%d id=%p bConfigurationValue=%d", __FUNCTION__, pUsbDevice, ifnum, id, pUsbDevice->config[0].CFGDESC(bConfigurationValue));
if (((USB_BYTEORDER16(pUsbDevice->descriptor.idVendor) != USB_AAPL_VENDOR_ID) &&
(USB_BYTEORDER16(pUsbDevice->descriptor.idVendor) != USB_CNXT_VENDOR_ID)) ||
((USB_BYTEORDER16(pUsbDevice->descriptor.idProduct) != USB_AAPL_PRODUCT_ID) &&
(USB_BYTEORDER16(pUsbDevice->descriptor.idProduct) != USB_CNXT_PRODUCT_ID))) {
err("Not the one we are interested about");
goto exit;
}
#else
dbg("%s: pUsbDevice=%p ifnum=%d id=%p", __FUNCTION__, pUsbDevice, ifnum, id);
#endif
if(pUsbDevice->descriptor.bNumConfigurations != 1) {
err("Wrong number of device configurations (%d)", pUsbDevice->descriptor.bNumConfigurations);
goto exit;
}
if(pUsbDevice->actconfig->CFGDESC(bNumInterfaces) != 2) {
err("Wrong number of device interfaces (%d)", pUsbDevice->actconfig->CFGDESC(bNumInterfaces));
goto exit;
}
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) )
pUsbDataInterface = pUsbDevice->actconfig->interface + 0;
#else
pUsbDataInterface = pUsbDevice->actconfig->interface[0];
#endif
if(pUsbDataInterface->num_altsetting != 1) {
warn("DataInterface has more than one alternate setting (%d)", pUsbDataInterface->num_altsetting);
}
if(pUsbDataInterface->altsetting->CFGDESC(bNumEndpoints) != DATA_PIPE_NUM) {
err("Wrong number of endpoints (%d) for DataInterface", pUsbDataInterface->altsetting->CFGDESC(bNumEndpoints));
goto exit;
}
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) )
pUsbCommInterface = pUsbDevice->actconfig->interface + 1;
#else
pUsbCommInterface = pUsbDevice->actconfig->interface[1];
#endif
if(pUsbCommInterface->num_altsetting != 1) {
warn("CommInterface has more than one alternate setting (%d)", pUsbCommInterface->num_altsetting);
}
if(pUsbCommInterface->altsetting->CFGDESC(bNumEndpoints) != INT_PIPE_NUM) {
err("Wrong number of endpoints (%d) for CommInterface", pUsbCommInterface->altsetting->CFGDESC(bNumEndpoints));
goto exit;
}
if(usb_interface_claimed(pUsbCommInterface)) {
err("CommInterface already claimed");
goto exit;
}
pUsbOsHal = kmalloc(sizeof(USBOSHAL), GFP_KERNEL);
if (!pUsbOsHal) {
err ("Out of memory");
goto exit;
}
memset(pUsbOsHal, 0, sizeof(USBOSHAL));
for(i=0; i < pUsbDataInterface->altsetting->CFGDESC(bNumEndpoints); i++) {
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) )
dbg("%s: pUsbDataInterface endpoint=%d len=%d type=0x%02x addr=0x%02x attr=0x%02x maxsize=%d interval=%d",
__FUNCTION__,
i,
pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bLength),
pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bDescriptorType),
pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress),
pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bmAttributes),
USB_BYTEORDER16(pUsbDataInterface->altsetting->endpoint[i].CFGDESC(wMaxPacketSize))&0x7ff,
pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bInterval)
);
#endif
if (pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress) == 0x81) {
pUsbOsHal->DataInPipe = usb_rcvbulkpipe (pUsbDevice, pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress) & USB_ENDPOINT_NUMBER_MASK);
} else if (pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress) == 0x01) {
pUsbOsHal->DataOutPipe = usb_sndbulkpipe (pUsbDevice, pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress) & USB_ENDPOINT_NUMBER_MASK);
} else if (pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress) == 0x83) {
pUsbOsHal->DcpInPipe = usb_rcvbulkpipe (pUsbDevice, pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress) & USB_ENDPOINT_NUMBER_MASK);
#if TARGET_HCF_FAMILY
} else if (pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress) == 0x03) {
pUsbOsHal->DownloadPipe = usb_sndbulkpipe (pUsbDevice, pUsbDataInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress) & USB_ENDPOINT_NUMBER_MASK);
if((USB_BYTEORDER16(pUsbDataInterface->altsetting->endpoint[i].CFGDESC(wMaxPacketSize))&0x7ff) == 64)
pUsbOsHal->UpdateEEPROM = TRUE;
#endif
}
}
for(i=0; i < pUsbCommInterface->altsetting->CFGDESC(bNumEndpoints); i++) {
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) )
dbg("%s: pUsbCommInterface endpoint=%d len=%d type=0x%02x addr=0x%02x attr=0x%02x maxsize=%d interval=%d",
__FUNCTION__,
i,
pUsbCommInterface->altsetting->endpoint[i].CFGDESC(bLength),
pUsbCommInterface->altsetting->endpoint[i].CFGDESC(bDescriptorType),
pUsbCommInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress),
pUsbCommInterface->altsetting->endpoint[i].CFGDESC(bmAttributes),
USB_BYTEORDER16(pUsbCommInterface->altsetting->endpoint[i].CFGDESC(wMaxPacketSize))&0x7ff,
pUsbCommInterface->altsetting->endpoint[i].CFGDESC(bInterval)
);
#endif
if (pUsbCommInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress) == 0x82) {
pUsbOsHal->NotifyPipe = usb_rcvintpipe (pUsbDevice, pUsbCommInterface->altsetting->endpoint[i].CFGDESC(bEndpointAddress) & USB_ENDPOINT_NUMBER_MASK);
pUsbOsHal->NotifyInterval = pUsbCommInterface->altsetting->endpoint[i].CFGDESC(bInterval);
pUsbOsHal->MaxNotifySize = USB_BYTEORDER16(pUsbCommInterface->altsetting->endpoint[i].CFGDESC(wMaxPacketSize))&0x7ff;
}
}
if(!pUsbOsHal->DataInPipe ||
!pUsbOsHal->DataOutPipe ||
#if TARGET_HCF_FAMILY
!pUsbOsHal->DcpInPipe ||
!pUsbOsHal->DownloadPipe ||
#endif
!pUsbOsHal->NotifyPipe) {
err("Missing endpoint(s)");
goto exit;
}
if(!pUsbOsHal->NotifyInterval)
pUsbOsHal->NotifyInterval = 1; // ms
pUsbOsHal->pUsbDevice = pUsbDevice;
pUsbOsHal->pUsbCommInterface = pUsbCommInterface;
pUsbOsHal->pUsbDataInterface = pUsbDataInterface;
pUsbOsHal->ControlRequestEvent = OsEventCreate("USB ControlRequestEvent");
if(!pUsbOsHal->ControlRequestEvent) {
goto exit;
}
pDevNode = kmalloc(sizeof(*pDevNode), GFP_KERNEL);
if(!pDevNode) {
err ("Out of memory");
goto exit;
}
memset(pDevNode, 0, sizeof(*pDevNode));
pDevNode->hwDev = pUsbOsHal;
#if ( LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) )
pDevNode->hwDevLink = &pUsbDevice->dev;
#endif
pDevNode->hwModule = THIS_MODULE;
strncpy(pDevNode->hwProfile, (char*)CNXTHWCFG("cadmus2"), sizeof(pDevNode->hwProfile));
pDevNode->hwProfile[sizeof(pDevNode->hwProfile)-1] = '\0';
snprintf(pDevNode->hwInstName, sizeof(pDevNode->hwInstName), "USB-%04x:%04x",
USB_BYTEORDER16(pUsbDevice->descriptor.idVendor), USB_BYTEORDER16(pUsbDevice->descriptor.idProduct));
#ifdef CNXTHWUSB_TYPE
pDevNode->hwType = CNXTHWUSB_TYPE;
pDevNode->hwIf = GetHwFuncs();
#endif
pDevNode->pmControl = cnxthw_DevMgrPMControl;
pDevNode->osPageOffset = PAGE_OFFSET;
usb_driver_claim_interface(&cnxthwusb_driver, pUsbCommInterface, pDevNode);
if(!OsUsbAllocateUrbs(pUsbOsHal)) {
err("Cannot allocate URBs");
#if ( LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) )
usb_set_intfdata (pUsbCommInterface, NULL);
#endif
usb_driver_release_interface(&cnxthwusb_driver, pUsbCommInterface);
goto exit;
}
pUsbOsHal->bActive = TRUE;
if(OsUsbFWDownload (pUsbOsHal)) {
err("Firmware download failed");
pUsbOsHal->bActive = FALSE;
OsUsbFreeUrbs(pUsbOsHal);
#if ( LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) )
usb_set_intfdata (pUsbCommInterface, NULL);
#endif
usb_driver_release_interface(&cnxthwusb_driver, pUsbCommInterface);
goto exit;
}
if (cnxt_serial_add(pDevNode, 0, pUsbDevice, ifnum, THIS_MODULE) < 0) {
pUsbOsHal->bActive = FALSE;
OsUsbFreeUrbs(pUsbOsHal);
#if ( LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) )
usb_set_intfdata (pUsbCommInterface, NULL);
#endif
usb_driver_release_interface(&cnxthwusb_driver, pUsbCommInterface);
goto exit;
}
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) )
return pDevNode;
#else
usb_set_intfdata (intf, pDevNode);
return 0;
#endif
exit:
if(pDevNode) {
kfree(pDevNode);
}
if(pUsbOsHal) {
if(pUsbOsHal->ControlRequestEvent)
OsEventDestroy(pUsbOsHal->ControlRequestEvent);
kfree(pUsbOsHal);
}
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) )
return NULL;
#else
return -ENODEV;
#endif
}
static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
{
int status = -1;
u8 *buf = intf->cur_altsetting->extra;
int len = intf->cur_altsetting->extralen;
struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
struct usb_cdc_union_desc *cdc_union = NULL;
struct usb_cdc_ether_desc *cdc_ether = NULL;
u32 found = 0;
struct usb_driver *driver = driver_of(intf);
struct qmi_wwan_state *info = (void *)&dev->data;
BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) < sizeof(struct qmi_wwan_state)));
/* control and data is shared? */
if (intf->cur_altsetting->desc.bNumEndpoints == 3) {
info->control = intf;
info->data = intf;
goto shared;
}
/* else require a single interrupt status endpoint on control intf */
if (intf->cur_altsetting->desc.bNumEndpoints != 1)
goto err;
/* and a number of CDC descriptors */
while (len > 3) {
struct usb_descriptor_header *h = (void *)buf;
/* ignore any misplaced descriptors */
if (h->bDescriptorType != USB_DT_CS_INTERFACE)
goto next_desc;
/* buf[2] is CDC descriptor subtype */
switch (buf[2]) {
case USB_CDC_HEADER_TYPE:
if (found & 1 << USB_CDC_HEADER_TYPE) {
dev_dbg(&intf->dev, "extra CDC header\n");
goto err;
}
if (h->bLength != sizeof(struct usb_cdc_header_desc)) {
dev_dbg(&intf->dev, "CDC header len %u\n", h->bLength);
goto err;
}
break;
case USB_CDC_UNION_TYPE:
if (found & 1 << USB_CDC_UNION_TYPE) {
dev_dbg(&intf->dev, "extra CDC union\n");
goto err;
}
if (h->bLength != sizeof(struct usb_cdc_union_desc)) {
dev_dbg(&intf->dev, "CDC union len %u\n", h->bLength);
goto err;
}
cdc_union = (struct usb_cdc_union_desc *)buf;
break;
case USB_CDC_ETHERNET_TYPE:
if (found & 1 << USB_CDC_ETHERNET_TYPE) {
dev_dbg(&intf->dev, "extra CDC ether\n");
goto err;
}
if (h->bLength != sizeof(struct usb_cdc_ether_desc)) {
dev_dbg(&intf->dev, "CDC ether len %u\n", h->bLength);
goto err;
}
cdc_ether = (struct usb_cdc_ether_desc *)buf;
break;
}
/*
* Remember which CDC functional descriptors we've seen. Works
* for all types we care about, of which USB_CDC_ETHERNET_TYPE
* (0x0f) is the highest numbered
*/
if (buf[2] < 32)
found |= 1 << buf[2];
next_desc:
len -= h->bLength;
buf += h->bLength;
}
/* did we find all the required ones? */
if (!(found & (1 << USB_CDC_HEADER_TYPE)) ||
!(found & (1 << USB_CDC_UNION_TYPE))) {
dev_err(&intf->dev, "CDC functional descriptors missing\n");
goto err;
}
/* verify CDC Union */
if (desc->bInterfaceNumber != cdc_union->bMasterInterface0) {
dev_err(&intf->dev, "bogus CDC Union: master=%u\n", cdc_union->bMasterInterface0);
goto err;
}
/* need to save these for unbind */
info->control = intf;
info->data = usb_ifnum_to_if(dev->udev, cdc_union->bSlaveInterface0);
if (!info->data) {
dev_err(&intf->dev, "bogus CDC Union: slave=%u\n", cdc_union->bSlaveInterface0);
goto err;
}
/* errors aren't fatal - we can live with the dynamic address */
if (cdc_ether) {
dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
}
/* claim data interface and set it up */
status = usb_driver_claim_interface(driver, info->data, dev);
if (status < 0)
goto err;
shared:
status = qmi_wwan_register_subdriver(dev);
if (status < 0 && info->control != info->data) {
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver, info->data);
}
err:
return status;
}
int usbpn_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
static const char ifname[] = "usbpn%d";
const struct usb_cdc_union_desc *union_header = NULL;
const struct usb_host_interface *data_desc;
struct usb_interface *data_intf;
struct usb_device *usbdev = interface_to_usbdev(intf);
struct net_device *dev;
struct usbpn_dev *pnd;
u8 *data;
int phonet = 0;
int len, err;
data = intf->altsetting->extra;
len = intf->altsetting->extralen;
while (len >= 3) {
u8 dlen = data[0];
if (dlen < 3)
return -EINVAL;
/* bDescriptorType */
if (data[1] == USB_DT_CS_INTERFACE) {
/* bDescriptorSubType */
switch (data[2]) {
case USB_CDC_UNION_TYPE:
if (union_header || dlen < 5)
break;
union_header =
(struct usb_cdc_union_desc *)data;
break;
case 0xAB:
phonet = 1;
break;
}
}
data += dlen;
len -= dlen;
}
if (!union_header || !phonet)
return -EINVAL;
data_intf = usb_ifnum_to_if(usbdev, union_header->bSlaveInterface0);
if (data_intf == NULL)
return -ENODEV;
/* Data interface has one inactive and one active setting */
if (data_intf->num_altsetting != 2)
return -EINVAL;
if (data_intf->altsetting[0].desc.bNumEndpoints == 0
&& data_intf->altsetting[1].desc.bNumEndpoints == 2)
data_desc = data_intf->altsetting + 1;
else
if (data_intf->altsetting[0].desc.bNumEndpoints == 2
&& data_intf->altsetting[1].desc.bNumEndpoints == 0)
data_desc = data_intf->altsetting;
else
return -EINVAL;
dev = alloc_netdev(sizeof(*pnd) + sizeof(pnd->urbs[0]) * rxq_size,
ifname, usbpn_setup);
if (!dev)
return -ENOMEM;
pnd = netdev_priv(dev);
SET_NETDEV_DEV(dev, &intf->dev);
netif_stop_queue(dev);
pnd->dev = dev;
pnd->usb = usb_get_dev(usbdev);
pnd->intf = intf;
pnd->data_intf = data_intf;
spin_lock_init(&pnd->tx_lock);
spin_lock_init(&pnd->rx_lock);
/* Endpoints */
if (usb_pipein(data_desc->endpoint[0].desc.bEndpointAddress)) {
pnd->rx_pipe = usb_rcvbulkpipe(usbdev,
data_desc->endpoint[0].desc.bEndpointAddress);
pnd->tx_pipe = usb_sndbulkpipe(usbdev,
data_desc->endpoint[1].desc.bEndpointAddress);
} else {
pnd->rx_pipe = usb_rcvbulkpipe(usbdev,
data_desc->endpoint[1].desc.bEndpointAddress);
pnd->tx_pipe = usb_sndbulkpipe(usbdev,
data_desc->endpoint[0].desc.bEndpointAddress);
}
pnd->active_setting = data_desc - data_intf->altsetting;
err = usb_driver_claim_interface(&usbpn_driver, data_intf, pnd);
if (err)
goto out;
/* Force inactive mode until the network device is brought UP */
usb_set_interface(usbdev, union_header->bSlaveInterface0,
!pnd->active_setting);
usb_set_intfdata(intf, pnd);
err = register_netdev(dev);
if (err) {
usb_driver_release_interface(&usbpn_driver, data_intf);
goto out;
}
dev_dbg(&dev->dev, "USB CDC Phonet device found\n");
return 0;
out:
usb_set_intfdata(intf, NULL);
free_netdev(dev);
return err;
}
static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
{
int retval;
struct net_device *net = dev->net;
struct cdc_state *info = (void *) &dev->data;
union {
void *buf;
struct rndis_msg_hdr *header;
struct rndis_init *init;
struct rndis_init_c *init_c;
struct rndis_query *get;
struct rndis_query_c *get_c;
struct rndis_set *set;
struct rndis_set_c *set_c;
} u;
u32 tmp;
int reply_len;
unsigned char *bp;
/* we can't rely on i/o from stack working, or stack allocation */
u.buf = kmalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
if (!u.buf)
return -ENOMEM;
retval = usbnet_generic_cdc_bind(dev, intf);
if (retval < 0)
goto fail;
u.init->msg_type = RNDIS_MSG_INIT;
u.init->msg_len = ccpu2(sizeof *u.init);
u.init->major_version = ccpu2(1);
u.init->minor_version = ccpu2(0);
/* max transfer (in spec) is 0x4000 at full speed, but for
* TX we'll stick to one Ethernet packet plus RNDIS framing.
* For RX we handle drivers that zero-pad to end-of-packet.
* Don't let userspace change these settings.
*
* NOTE: there still seems to be wierdness here, as if we need
* to do some more things to make sure WinCE targets accept this.
* They default to jumbograms of 8KB or 16KB, which is absurd
* for such low data rates and which is also more than Linux
* can usually expect to allocate for SKB data...
*/
net->hard_header_len += sizeof (struct rndis_data_hdr);
dev->hard_mtu = net->mtu + net->hard_header_len;
dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1);
if (dev->maxpacket == 0) {
if (netif_msg_probe(dev))
dev_dbg(&intf->dev, "dev->maxpacket can't be 0\n");
retval = -EINVAL;
goto fail_and_release;
}
dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1);
dev->rx_urb_size &= ~(dev->maxpacket - 1);
u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size);
net->change_mtu = NULL;
retval = rndis_command(dev, u.header);
if (unlikely(retval < 0)) {
/* it might not even be an RNDIS device!! */
dev_err(&intf->dev, "RNDIS init failed, %d\n", retval);
goto fail_and_release;
}
tmp = le32_to_cpu(u.init_c->max_transfer_size);
if (tmp < dev->hard_mtu) {
dev_err(&intf->dev,
"dev can't take %u byte packets (max %u)\n",
dev->hard_mtu, tmp);
retval = -EINVAL;
goto fail_and_release;
}
/* REVISIT: peripheral "alignment" request is ignored ... */
dev_dbg(&intf->dev,
"hard mtu %u (%u from dev), rx buflen %Zu, align %d\n",
dev->hard_mtu, tmp, dev->rx_urb_size,
1 << le32_to_cpu(u.init_c->packet_alignment));
/* Get designated host ethernet address */
reply_len = ETH_ALEN;
retval = rndis_query(dev, intf, u.buf, OID_802_3_PERMANENT_ADDRESS,
48, (void **) &bp, &reply_len);
if (unlikely(retval< 0)) {
dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval);
goto fail_and_release;
}
memcpy(net->dev_addr, bp, ETH_ALEN);
/* set a nonzero filter to enable data transfers */
memset(u.set, 0, sizeof *u.set);
u.set->msg_type = RNDIS_MSG_SET;
u.set->msg_len = ccpu2(4 + sizeof *u.set);
u.set->oid = OID_GEN_CURRENT_PACKET_FILTER;
u.set->len = ccpu2(4);
u.set->offset = ccpu2((sizeof *u.set) - 8);
*(__le32 *)(u.buf + sizeof *u.set) = ccpu2(DEFAULT_FILTER);
retval = rndis_command(dev, u.header);
if (unlikely(retval < 0)) {
dev_err(&intf->dev, "rndis set packet filter, %d\n", retval);
goto fail_and_release;
}
retval = 0;
kfree(u.buf);
return retval;
fail_and_release:
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver_of(intf), info->data);
info->data = NULL;
fail:
kfree(u.buf);
return retval;
}
int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting)
{
const struct usb_cdc_union_desc *union_desc = NULL;
struct cdc_ncm_ctx *ctx;
struct usb_driver *driver;
u8 *buf;
int len;
int temp;
u8 iface_no;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
hrtimer_init(&ctx->tx_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
ctx->tx_timer.function = &cdc_ncm_tx_timer_cb;
ctx->bh.data = (unsigned long)dev;
ctx->bh.func = cdc_ncm_txpath_bh;
atomic_set(&ctx->stop, 0);
spin_lock_init(&ctx->mtx);
/* store ctx pointer in device data field */
dev->data[0] = (unsigned long)ctx;
/* only the control interface can be successfully probed */
ctx->control = intf;
/* get some pointers */
driver = driver_of(intf);
buf = intf->cur_altsetting->extra;
len = intf->cur_altsetting->extralen;
/* parse through descriptors associated with control interface */
while ((len > 0) && (buf[0] > 2) && (buf[0] <= len)) {
if (buf[1] != USB_DT_CS_INTERFACE)
goto advance;
switch (buf[2]) {
case USB_CDC_UNION_TYPE:
if (buf[0] < sizeof(*union_desc))
break;
union_desc = (const struct usb_cdc_union_desc *)buf;
/* the master must be the interface we are probing */
if (intf->cur_altsetting->desc.bInterfaceNumber !=
union_desc->bMasterInterface0) {
dev_dbg(&intf->dev, "bogus CDC Union\n");
goto error;
}
ctx->data = usb_ifnum_to_if(dev->udev,
union_desc->bSlaveInterface0);
break;
case USB_CDC_ETHERNET_TYPE:
if (buf[0] < sizeof(*(ctx->ether_desc)))
break;
ctx->ether_desc =
(const struct usb_cdc_ether_desc *)buf;
break;
case USB_CDC_NCM_TYPE:
if (buf[0] < sizeof(*(ctx->func_desc)))
break;
ctx->func_desc = (const struct usb_cdc_ncm_desc *)buf;
break;
case USB_CDC_MBIM_TYPE:
if (buf[0] < sizeof(*(ctx->mbim_desc)))
break;
ctx->mbim_desc = (const struct usb_cdc_mbim_desc *)buf;
break;
case USB_CDC_MBIM_EXTENDED_TYPE:
if (buf[0] < sizeof(*(ctx->mbim_extended_desc)))
break;
ctx->mbim_extended_desc =
(const struct usb_cdc_mbim_extended_desc *)buf;
break;
default:
break;
}
advance:
/* advance to next descriptor */
temp = buf[0];
buf += temp;
len -= temp;
}
/* some buggy devices have an IAD but no CDC Union */
if (!union_desc && intf->intf_assoc && intf->intf_assoc->bInterfaceCount == 2) {
ctx->data = usb_ifnum_to_if(dev->udev, intf->cur_altsetting->desc.bInterfaceNumber + 1);
dev_dbg(&intf->dev, "CDC Union missing - got slave from IAD\n");
}
/* check if we got everything */
if (!ctx->data || (!ctx->mbim_desc && !ctx->ether_desc)) {
dev_dbg(&intf->dev, "CDC descriptors missing\n");
goto error;
}
/* claim data interface, if different from control */
if (ctx->data != ctx->control) {
temp = usb_driver_claim_interface(driver, ctx->data, dev);
if (temp) {
dev_dbg(&intf->dev, "failed to claim data intf\n");
goto error;
}
}
iface_no = ctx->data->cur_altsetting->desc.bInterfaceNumber;
/* reset data interface */
temp = usb_set_interface(dev->udev, iface_no, 0);
if (temp) {
dev_dbg(&intf->dev, "set interface failed\n");
goto error2;
}
/* configure data interface */
temp = usb_set_interface(dev->udev, iface_no, data_altsetting);
if (temp) {
dev_dbg(&intf->dev, "set interface failed\n");
goto error2;
}
cdc_ncm_find_endpoints(dev, ctx->data);
cdc_ncm_find_endpoints(dev, ctx->control);
if (!dev->in || !dev->out || !dev->status) {
dev_dbg(&intf->dev, "failed to collect endpoints\n");
goto error2;
}
/* initialize data interface */
if (cdc_ncm_setup(dev)) {
dev_dbg(&intf->dev, "cdc_ncm_setup() failed\n");
goto error2;
}
usb_set_intfdata(ctx->data, dev);
usb_set_intfdata(ctx->control, dev);
if (ctx->ether_desc) {
temp = usbnet_get_ethernet_addr(dev, ctx->ether_desc->iMACAddress);
if (temp) {
dev_dbg(&intf->dev, "failed to get mac address\n");
goto error2;
}
dev_info(&intf->dev, "MAC-Address: %pM\n", dev->net->dev_addr);
}
/* usbnet use these values for sizing tx/rx queues */
dev->hard_mtu = ctx->tx_max;
dev->rx_urb_size = ctx->rx_max;
return 0;
error2:
usb_set_intfdata(ctx->control, NULL);
usb_set_intfdata(ctx->data, NULL);
if (ctx->data != ctx->control)
usb_driver_release_interface(driver, ctx->data);
error:
cdc_ncm_free((struct cdc_ncm_ctx *)dev->data[0]);
dev->data[0] = 0;
dev_info(&intf->dev, "bind() failure\n");
return -ENODEV;
}
static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
{
int status = -1;
u8 *buf = intf->cur_altsetting->extra;
int len = intf->cur_altsetting->extralen;
struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
struct usb_cdc_union_desc *cdc_union = NULL;
struct usb_cdc_ether_desc *cdc_ether = NULL;
u32 found = 0;
struct usb_driver *driver = driver_of(intf);
struct qmi_wwan_state *info = (void *)&dev->data;
BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) <
sizeof(struct qmi_wwan_state)));
/* set up initial state */
info->control = intf;
info->data = intf;
/* and a number of CDC descriptors */
while (len > 3) {
struct usb_descriptor_header *h = (void *)buf;
/* ignore any misplaced descriptors */
if (h->bDescriptorType != USB_DT_CS_INTERFACE)
goto next_desc;
/* buf[2] is CDC descriptor subtype */
switch (buf[2]) {
case USB_CDC_HEADER_TYPE:
if (found & 1 << USB_CDC_HEADER_TYPE) {
dev_dbg(&intf->dev, "extra CDC header\n");
goto err;
}
if (h->bLength != sizeof(struct usb_cdc_header_desc)) {
dev_dbg(&intf->dev, "CDC header len %u\n",
h->bLength);
goto err;
}
break;
case USB_CDC_UNION_TYPE:
if (found & 1 << USB_CDC_UNION_TYPE) {
dev_dbg(&intf->dev, "extra CDC union\n");
goto err;
}
if (h->bLength != sizeof(struct usb_cdc_union_desc)) {
dev_dbg(&intf->dev, "CDC union len %u\n",
h->bLength);
goto err;
}
cdc_union = (struct usb_cdc_union_desc *)buf;
break;
case USB_CDC_ETHERNET_TYPE:
if (found & 1 << USB_CDC_ETHERNET_TYPE) {
dev_dbg(&intf->dev, "extra CDC ether\n");
goto err;
}
if (h->bLength != sizeof(struct usb_cdc_ether_desc)) {
dev_dbg(&intf->dev, "CDC ether len %u\n",
h->bLength);
goto err;
}
cdc_ether = (struct usb_cdc_ether_desc *)buf;
break;
}
/* Remember which CDC functional descriptors we've seen. Works
* for all types we care about, of which USB_CDC_ETHERNET_TYPE
* (0x0f) is the highest numbered
*/
if (buf[2] < 32)
found |= 1 << buf[2];
next_desc:
len -= h->bLength;
buf += h->bLength;
}
/* Use separate control and data interfaces if we found a CDC Union */
if (cdc_union) {
info->data = usb_ifnum_to_if(dev->udev,
cdc_union->bSlaveInterface0);
if (desc->bInterfaceNumber != cdc_union->bMasterInterface0 ||
!info->data) {
dev_err(&intf->dev,
"bogus CDC Union: master=%u, slave=%u\n",
cdc_union->bMasterInterface0,
cdc_union->bSlaveInterface0);
goto err;
}
}
/* errors aren't fatal - we can live with the dynamic address */
if (cdc_ether) {
dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
}
/* claim data interface and set it up */
if (info->control != info->data) {
status = usb_driver_claim_interface(driver, info->data, dev);
if (status < 0)
goto err;
}
status = qmi_wwan_register_subdriver(dev);
if (status < 0 && info->control != info->data) {
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver, info->data);
}
/* Never use the same address on both ends of the link, even if the
* buggy firmware told us to. Or, if device is assigned the well-known
* buggy firmware MAC address, replace it with a random address,
*/
if (ether_addr_equal(dev->net->dev_addr, default_modem_addr) ||
ether_addr_equal(dev->net->dev_addr, buggy_fw_addr))
eth_hw_addr_random(dev->net);
/* make MAC addr easily distinguishable from an IP header */
if (possibly_iphdr(dev->net->dev_addr)) {
dev->net->dev_addr[0] |= 0x02; /* set local assignment bit */
dev->net->dev_addr[0] &= 0xbf; /* clear "IP" bit */
}
dev->net->netdev_ops = &qmi_wwan_netdev_ops;
err:
return status;
}
static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
{
int status = -1;
u8 *buf = intf->cur_altsetting->extra;
int len = intf->cur_altsetting->extralen;
struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
struct usb_cdc_union_desc *cdc_union;
struct usb_cdc_ether_desc *cdc_ether;
struct usb_driver *driver = driver_of(intf);
struct qmi_wwan_state *info = (void *)&dev->data;
struct usb_cdc_parsed_header hdr;
BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) <
sizeof(struct qmi_wwan_state)));
/* set up initial state */
info->control = intf;
info->data = intf;
/* and a number of CDC descriptors */
cdc_parse_cdc_header(&hdr, intf, buf, len);
cdc_union = hdr.usb_cdc_union_desc;
cdc_ether = hdr.usb_cdc_ether_desc;
/* Use separate control and data interfaces if we found a CDC Union */
if (cdc_union) {
info->data = usb_ifnum_to_if(dev->udev,
cdc_union->bSlaveInterface0);
if (desc->bInterfaceNumber != cdc_union->bMasterInterface0 ||
!info->data) {
dev_err(&intf->dev,
"bogus CDC Union: master=%u, slave=%u\n",
cdc_union->bMasterInterface0,
cdc_union->bSlaveInterface0);
/* ignore and continue... */
cdc_union = NULL;
info->data = intf;
}
}
/* errors aren't fatal - we can live with the dynamic address */
if (cdc_ether) {
dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
}
/* claim data interface and set it up */
if (info->control != info->data) {
status = usb_driver_claim_interface(driver, info->data, dev);
if (status < 0)
goto err;
}
status = qmi_wwan_register_subdriver(dev);
if (status < 0 && info->control != info->data) {
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver, info->data);
}
/* disabling remote wakeup on MDM9x30 devices has the same
* effect as clearing DTR. The device will not respond to QMI
* requests until we set DTR again. This is similar to a
* QMI_CTL SYNC request, clearing a lot of firmware state
* including the client ID allocations.
*
* Our usage model allows a session to span multiple
* open/close events, so we must prevent the firmware from
* clearing out state the clients might need.
*
* MDM9x30 is the first QMI chipset with USB3 support. Abuse
* this fact to enable the quirk.
*/
if (le16_to_cpu(dev->udev->descriptor.bcdUSB) >= 0x0201) {
qmi_wwan_manage_power(dev, 1);
qmi_wwan_change_dtr(dev, true);
}
/* Never use the same address on both ends of the link, even if the
* buggy firmware told us to. Or, if device is assigned the well-known
* buggy firmware MAC address, replace it with a random address,
*/
if (ether_addr_equal(dev->net->dev_addr, default_modem_addr) ||
ether_addr_equal(dev->net->dev_addr, buggy_fw_addr))
eth_hw_addr_random(dev->net);
/* make MAC addr easily distinguishable from an IP header */
if (possibly_iphdr(dev->net->dev_addr)) {
dev->net->dev_addr[0] |= 0x02; /* set local assignment bit */
dev->net->dev_addr[0] &= 0xbf; /* clear "IP" bit */
}
dev->net->netdev_ops = &qmi_wwan_netdev_ops;
dev->net->sysfs_groups[0] = &qmi_wwan_sysfs_attr_group;
err:
return status;
}
