diff options
Diffstat (limited to 'drivers/usb/net/cdc_ether.c')
| -rw-r--r-- | drivers/usb/net/cdc_ether.c | 570 |
1 files changed, 0 insertions, 570 deletions
diff --git a/drivers/usb/net/cdc_ether.c b/drivers/usb/net/cdc_ether.c deleted file mode 100644 index 5a21f06bf8a..00000000000 --- a/drivers/usb/net/cdc_ether.c +++ /dev/null @@ -1,570 +0,0 @@ -/* - * 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"); |