diff options
Diffstat (limited to 'drivers/usb/gadget/ether.c')
| -rw-r--r-- | drivers/usb/gadget/ether.c | 2629 |
1 files changed, 173 insertions, 2456 deletions
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c index dee1f081165d..d7aaaa29b1e1 100644 --- a/drivers/usb/gadget/ether.c +++ b/drivers/usb/gadget/ether.c @@ -1,8 +1,9 @@ /* * ether.c -- Ethernet gadget driver, with CDC and non-CDC options * - * Copyright (C) 2003-2005 David Brownell + * Copyright (C) 2003-2005,2008 David Brownell * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger + * Copyright (C) 2008 Nokia Corporation * * 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 @@ -23,18 +24,9 @@ #include <linux/kernel.h> #include <linux/utsname.h> -#include <linux/device.h> -#include <linux/ctype.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/usb/ch9.h> -#include <linux/usb/cdc.h> -#include <linux/usb/gadget.h> +#include "u_ether.h" -#include "gadget_chips.h" - -/*-------------------------------------------------------------------------*/ /* * Ethernet gadget driver -- with CDC and non-CDC options @@ -46,7 +38,11 @@ * this USB-IF standard as its open-systems interoperability solution; * most host side USB stacks (except from Microsoft) support it. * - * There's some hardware that can't talk CDC. We make that hardware + * This is sometimes called "CDC ECM" (Ethernet Control Model) to support + * TLA-soup. "CDC ACM" (Abstract Control Model) is for modems, and a new + * "CDC EEM" (Ethernet Emulation Model) is starting to spread. + * + * There's some hardware that can't talk CDC ECM. We make that hardware * implement a "minimalist" vendor-agnostic CDC core: same framing, but * link-level setup only requires activating the configuration. Only the * endpoint descriptors, and product/vendor IDs, are relevant; no control @@ -64,70 +60,40 @@ * A third option is also in use. Rather than CDC Ethernet, or something * simpler, Microsoft pushes their own approach: RNDIS. The published * RNDIS specs are ambiguous and appear to be incomplete, and are also - * needlessly complex. + * needlessly complex. They borrow more from CDC ACM than CDC ECM. */ #define DRIVER_DESC "Ethernet Gadget" -#define DRIVER_VERSION "May Day 2005" - -static const char shortname [] = "ether"; -static const char driver_desc [] = DRIVER_DESC; - -#define RX_EXTRA 20 /* guard against rx overflows */ - -#include "rndis.h" +#define DRIVER_VERSION "Memorial Day 2008" -#ifndef CONFIG_USB_ETH_RNDIS -#define rndis_uninit(x) do{}while(0) -#define rndis_deregister(c) do{}while(0) -#define rndis_exit() do{}while(0) +#ifdef CONFIG_USB_ETH_RNDIS +#define PREFIX "RNDIS/" +#else +#define PREFIX "" #endif -/* CDC and RNDIS support the same host-chosen outgoing packet filters. */ -#define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \ - |USB_CDC_PACKET_TYPE_ALL_MULTICAST \ - |USB_CDC_PACKET_TYPE_PROMISCUOUS \ - |USB_CDC_PACKET_TYPE_DIRECTED) - - -/*-------------------------------------------------------------------------*/ - -struct eth_dev { - spinlock_t lock; - struct usb_gadget *gadget; - struct usb_request *req; /* for control responses */ - struct usb_request *stat_req; /* for cdc & rndis status */ - - u8 config; - struct usb_ep *in_ep, *out_ep, *status_ep; - const struct usb_endpoint_descriptor - *in, *out, *status; - - spinlock_t req_lock; - struct list_head tx_reqs, rx_reqs; - - struct net_device *net; - struct net_device_stats stats; - atomic_t tx_qlen; - - struct work_struct work; - unsigned zlp:1; - unsigned cdc:1; - unsigned rndis:1; - unsigned suspended:1; - u16 cdc_filter; - unsigned long todo; -#define WORK_RX_MEMORY 0 - int rndis_config; - u8 host_mac [ETH_ALEN]; -}; - -/* This version autoconfigures as much as possible at run-time. +/* + * This driver aims for interoperability by using CDC ECM unless + * + * can_support_ecm() + * + * returns false, in which case it supports the CDC Subset. By default, + * that returns true; most hardware has no problems with CDC ECM, that's + * a good default. Previous versions of this driver had no default; this + * version changes that, removing overhead for new controller support. * - * It also ASSUMES a self-powered device, without remote wakeup, - * although remote wakeup support would make sense. + * IF YOUR HARDWARE CAN'T SUPPORT CDC ECM, UPDATE THAT ROUTINE! */ +static inline bool has_rndis(void) +{ +#ifdef CONFIG_USB_ETH_RNDIS + return true; +#else + return false; +#endif +} + /*-------------------------------------------------------------------------*/ /* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! @@ -137,8 +103,8 @@ struct eth_dev { /* Thanks to NetChip Technologies for donating this product ID. * It's for devices with only CDC Ethernet configurations. */ -#define CDC_VENDOR_NUM 0x0525 /* NetChip */ -#define CDC_PRODUCT_NUM 0xa4a1 /* Linux-USB Ethernet Gadget */ +#define CDC_VENDOR_NUM 0x0525 /* NetChip */ +#define CDC_PRODUCT_NUM 0xa4a1 /* Linux-USB Ethernet Gadget */ /* For hardware that can't talk CDC, we use the same vendor ID that * ARM Linux has used for ethernet-over-usb, both with sa1100 and @@ -162,274 +128,9 @@ struct eth_dev { #define RNDIS_VENDOR_NUM 0x0525 /* NetChip */ #define RNDIS_PRODUCT_NUM 0xa4a2 /* Ethernet/RNDIS Gadget */ - -/* Some systems will want different product identifers published in the - * device descriptor, either numbers or strings or both. These string - * parameters are in UTF-8 (superset of ASCII's 7 bit characters). - */ - -static ushort idVendor; -module_param(idVendor, ushort, S_IRUGO); -MODULE_PARM_DESC(idVendor, "USB Vendor ID"); - -static ushort idProduct; -module_param(idProduct, ushort, S_IRUGO); -MODULE_PARM_DESC(idProduct, "USB Product ID"); - -static ushort bcdDevice; -module_param(bcdDevice, ushort, S_IRUGO); -MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)"); - -static char *iManufacturer; -module_param(iManufacturer, charp, S_IRUGO); -MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string"); - -static char *iProduct; -module_param(iProduct, charp, S_IRUGO); -MODULE_PARM_DESC(iProduct, "USB Product string"); - -static char *iSerialNumber; -module_param(iSerialNumber, charp, S_IRUGO); -MODULE_PARM_DESC(iSerialNumber, "SerialNumber"); - -/* initial value, changed by "ifconfig usb0 hw ether xx:xx:xx:xx:xx:xx" */ -static char *dev_addr; -module_param(dev_addr, charp, S_IRUGO); -MODULE_PARM_DESC(dev_addr, "Device Ethernet Address"); - -/* this address is invisible to ifconfig */ -static char *host_addr; -module_param(host_addr, charp, S_IRUGO); -MODULE_PARM_DESC(host_addr, "Host Ethernet Address"); - - -/*-------------------------------------------------------------------------*/ - -/* Include CDC support if we could run on CDC-capable hardware. */ - -#ifdef CONFIG_USB_GADGET_NET2280 -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_DUMMY_HCD -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_GOKU -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_LH7A40X -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_MQ11XX -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_OMAP -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_N9604 -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_S3C2410 -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_AT91 -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_MUSBHSFC -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_MUSB_HDRC -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_ATMEL_USBA -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_FSL_USB2 -#define DEV_CONFIG_CDC -#endif - -/* For CDC-incapable hardware, choose the simple cdc subset. - * Anything that talks bulk (without notable bugs) can do this. - */ -#ifdef CONFIG_USB_GADGET_PXA25X -#define DEV_CONFIG_SUBSET -#endif - -#ifdef CONFIG_USB_GADGET_PXA27X -#define DEV_CONFIG_SUBSET -#endif - -#ifdef CONFIG_USB_GADGET_SUPERH -#define DEV_CONFIG_SUBSET -#endif - -#ifdef CONFIG_USB_GADGET_SA1100 -/* use non-CDC for backwards compatibility */ -#define DEV_CONFIG_SUBSET -#endif - -#ifdef CONFIG_USB_GADGET_M66592 -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_AMD5536UDC -#define DEV_CONFIG_CDC -#endif - - -/*-------------------------------------------------------------------------*/ - -/* "main" config is either CDC, or its simple subset */ -static inline int is_cdc(struct eth_dev *dev) -{ -#if !defined(DEV_CONFIG_SUBSET) - return 1; /* only cdc possible */ -#elif !defined (DEV_CONFIG_CDC) - return 0; /* only subset possible */ -#else - return dev->cdc; /* depends on what hardware we found */ -#endif -} - -/* "secondary" RNDIS config may sometimes be activated */ -static inline int rndis_active(struct eth_dev *dev) -{ -#ifdef CONFIG_USB_ETH_RNDIS - return dev->rndis; -#else - return 0; -#endif -} - -#define subset_active(dev) (!is_cdc(dev) && !rndis_active(dev)) -#define cdc_active(dev) ( is_cdc(dev) && !rndis_active(dev)) - - - -#define DEFAULT_QLEN 2 /* double buffering by default */ - -/* peak bulk transfer bits-per-second */ -#define HS_BPS (13 * 512 * 8 * 1000 * 8) -#define FS_BPS (19 * 64 * 1 * 1000 * 8) - -#ifdef CONFIG_USB_GADGET_DUALSPEED -#define DEVSPEED USB_SPEED_HIGH - -static unsigned qmult = 5; -module_param (qmult, uint, S_IRUGO|S_IWUSR); - - -/* for dual-speed hardware, use deeper queues at highspeed */ -#define qlen(gadget) \ - (DEFAULT_QLEN*((gadget->speed == USB_SPEED_HIGH) ? qmult : 1)) - -static inline int BITRATE(struct usb_gadget *g) -{ - return (g->speed == USB_SPEED_HIGH) ? HS_BPS : FS_BPS; -} - -#else /* full speed (low speed doesn't do bulk) */ - -#define qmult 1 - -#define DEVSPEED USB_SPEED_FULL - -#define qlen(gadget) DEFAULT_QLEN - -static inline int BITRATE(struct usb_gadget *g) -{ - return FS_BPS; -} -#endif - - -/*-------------------------------------------------------------------------*/ - -#define xprintk(d,level,fmt,args...) \ - printk(level "%s: " fmt , (d)->net->name , ## args) - -#ifdef DEBUG -#undef DEBUG -#define DEBUG(dev,fmt,args...) \ - xprintk(dev , KERN_DEBUG , fmt , ## args) -#else -#define DEBUG(dev,fmt,args...) \ - do { } while (0) -#endif /* DEBUG */ - -#ifdef VERBOSE_DEBUG -#define VDEBUG DEBUG -#else -#define VDEBUG(dev,fmt,args...) \ - do { } while (0) -#endif /* DEBUG */ - -#define ERROR(dev,fmt,args...) \ - xprintk(dev , KERN_ERR , fmt , ## args) -#define WARN(dev,fmt,args...) \ - xprintk(dev , KERN_WARNING , fmt , ## args) -#define INFO(dev,fmt,args...) \ - xprintk(dev , KERN_INFO , fmt , ## args) - /*-------------------------------------------------------------------------*/ -/* USB DRIVER HOOKUP (to the hardware driver, below us), mostly - * ep0 implementation: descriptors, config management, setup(). - * also optional class-specific notification interrupt transfer. - */ - -/* - * DESCRIPTORS ... most are static, but strings and (full) configuration - * descriptors are built on demand. For now we do either full CDC, or - * our simple subset, with RNDIS as an optional second configuration. - * - * RNDIS includes some CDC ACM descriptors ... like CDC Ethernet. But - * the class descriptors match a modem (they're ignored; it's really just - * Ethernet functionality), they don't need the NOP altsetting, and the - * status transfer endpoint isn't optional. - */ - -#define STRING_MANUFACTURER 1 -#define STRING_PRODUCT 2 -#define STRING_ETHADDR 3 -#define STRING_DATA 4 -#define STRING_CONTROL 5 -#define STRING_RNDIS_CONTROL 6 -#define STRING_CDC 7 -#define STRING_SUBSET 8 -#define STRING_RNDIS 9 -#define STRING_SERIALNUMBER 10 - -/* holds our biggest descriptor (or RNDIS response) */ -#define USB_BUFSIZ 256 - -/* - * This device advertises one configuration, eth_config, unless RNDIS - * is enabled (rndis_config) on hardware supporting at least two configs. - * - * NOTE: Controllers like superh_udc should probably be able to use - * an RNDIS-only configuration. - * - * FIXME define some higher-powered configurations to make it easier - * to recharge batteries ... - */ - -#define DEV_CONFIG_VALUE 1 /* cdc or subset */ -#define DEV_RNDIS_CONFIG_VALUE 2 /* rndis; optional */ - -static struct usb_device_descriptor -device_desc = { +static struct usb_device_descriptor device_desc = { .bLength = sizeof device_desc, .bDescriptorType = USB_DT_DEVICE, @@ -438,2218 +139,234 @@ device_desc = { .bDeviceClass = USB_CLASS_COMM, .bDeviceSubClass = 0, .bDeviceProtocol = 0, + /* .bMaxPacketSize0 = f(hardware) */ + /* Vendor and product id defaults change according to what configs + * we support. (As does bNumConfigurations.) These values can + * also be overridden by module parameters. + */ .idVendor = __constant_cpu_to_le16 (CDC_VENDOR_NUM), .idProduct = __constant_cpu_to_le16 (CDC_PRODUCT_NUM), - .iManufacturer = STRING_MANUFACTURER, - .iProduct = STRING_PRODUCT, + /* .bcdDevice = f(hardware) */ + /* .iManufacturer = DYNAMIC */ + /* .iProduct = DYNAMIC */ + /* NO SERIAL NUMBER */ .bNumConfigurations = 1, }; -static struct usb_otg_descriptor -otg_descriptor = { +static struct usb_otg_descriptor otg_descriptor = { .bLength = sizeof otg_descriptor, .bDescriptorType = USB_DT_OTG, - .bmAttributes = USB_OTG_SRP, -}; - -static struct usb_config_descriptor -eth_config = { - .bLength = sizeof eth_config, - .bDescriptorType = USB_DT_CONFIG, - - /* compute wTotalLength on the fly */ - .bNumInterfaces = 2, - .bConfigurationValue = DEV_CONFIG_VALUE, - .iConfiguration = STRING_CDC, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = 50, -}; - -#ifdef CONFIG_USB_ETH_RNDIS -static struct usb_config_descriptor -rndis_config = { - .bLength = sizeof rndis_config, - .bDescriptorType = USB_DT_CONFIG, - - /* compute wTotalLength on the fly */ - .bNumInterfaces = 2, - .bConfigurationValue = DEV_RNDIS_CONFIG_VALUE, - .iConfiguration = STRING_RNDIS, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = 50, -}; -#endif - -/* - * Compared to the simple CDC subset, the full CDC Ethernet model adds - * three class descriptors, two interface descriptors, optional status - * endpoint. Both have a "data" interface and two bulk endpoints. - * There are also differences in how control requests are handled. - * - * RNDIS shares a lot with CDC-Ethernet, since it's a variant of the - * CDC-ACM (modem) spec. Unfortunately MSFT's RNDIS driver is buggy; it - * may hang or oops. Since bugfixes (or accurate specs, letting Linux - * work around those bugs) are unlikely to ever come from MSFT, you may - * wish to avoid using RNDIS. - * - * MCCI offers an alternative to RNDIS if you need to connect to Windows - * but have hardware that can't support CDC Ethernet. We add descriptors - * to present the CDC Subset as a (nonconformant) CDC MDLM variant called - * "SAFE". That borrows from both CDC Ethernet and CDC MDLM. You can - * get those drivers from MCCI, or bundled with various products. - */ - -#ifdef DEV_CONFIG_CDC -static struct usb_interface_descriptor -control_intf = { - .bLength = sizeof control_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 0, - /* status endpoint is optional; this may be patched later */ - .bNumEndpoints = 1, - .bInterfaceClass = USB_CLASS_COMM, - .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, - .bInterfaceProtocol = USB_CDC_PROTO_NONE, - .iInterface = STRING_CONTROL, -}; -#endif - -#ifdef CONFIG_USB_ETH_RNDIS -static const struct usb_interface_descriptor -rndis_control_intf = { - .bLength = sizeof rndis_control_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 0, - .bNumEndpoints = 1, - .bInterfaceClass = USB_CLASS_COMM, - .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, - .bInterfaceProtocol = USB_CDC_ACM_PROTO_VENDOR, - .iInterface = STRING_RNDIS_CONTROL, -}; -#endif - -static const struct usb_cdc_header_desc header_desc = { - .bLength = sizeof header_desc, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_HEADER_TYPE, - - .bcdCDC = __constant_cpu_to_le16 (0x0110), -}; - -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - -static const struct usb_cdc_union_desc union_desc = { - .bLength = sizeof union_desc, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_UNION_TYPE, - - .bMasterInterface0 = 0, /* index of control interface */ - .bSlaveInterface0 = 1, /* index of DATA interface */ -}; - -#endif /* CDC || RNDIS */ - -#ifdef CONFIG_USB_ETH_RNDIS - -static const struct usb_cdc_call_mgmt_descriptor call_mgmt_descriptor = { - .bLength = sizeof call_mgmt_descriptor, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_CALL_MANAGEMENT_TYPE, - - .bmCapabilities = 0x00, - .bDataInterface = 0x01, -}; - -static const struct usb_cdc_acm_descriptor acm_descriptor = { - .bLength = sizeof acm_descriptor, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_ACM_TYPE, - - .bmCapabilities = 0x00, -}; - -#endif - -#ifndef DEV_CONFIG_CDC - -/* "SAFE" loosely follows CDC WMC MDLM, violating the spec in various - * ways: data endpoints live in the control interface, there's no data - * interface, and it's not used to talk to a cell phone radio. - */ - -static const struct usb_cdc_mdlm_desc mdlm_desc = { - .bLength = sizeof mdlm_desc, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_MDLM_TYPE, - - .bcdVersion = __constant_cpu_to_le16(0x0100), - .bGUID = { - 0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6, - 0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f, - }, -}; - -/* since "usb_cdc_mdlm_detail_desc" is a variable length structure, we - * can't really use its struct. All we do here is say that we're using - * the submode of "SAFE" which directly matches the CDC Subset. - */ -static const u8 mdlm_detail_desc[] = { - 6, - USB_DT_CS_INTERFACE, - USB_CDC_MDLM_DETAIL_TYPE, - - 0, /* "SAFE" */ - 0, /* network control capabilities (none) */ - 0, /* network data capabilities ("raw" encapsulation) */ -}; - -#endif - -static const struct usb_cdc_ether_desc ether_desc = { - .bLength = sizeof ether_desc, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, - - /* this descriptor actually adds value, surprise! */ - .iMACAddress = STRING_ETHADDR, - .bmEthernetStatistics = __constant_cpu_to_le32 (0), /* no statistics */ - .wMaxSegmentSize = __constant_cpu_to_le16 (ETH_FRAME_LEN), - .wNumberMCFilters = __constant_cpu_to_le16 (0), - .bNumberPowerFilters = 0, -}; - - -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - -/* include the status endpoint if we can, even where it's optional. - * use wMaxPacketSize big enough to fit CDC_NOTIFY_SPEED_CHANGE in one - * packet, to simplify cancellation; and a big transfer interval, to - * waste less bandwidth. - * - * some drivers (like Linux 2.4 cdc-ether!) "need" it to exist even - * if they ignore the connect/disconnect notifications that real aether - * can provide. more advanced cdc configurations might want to support - * encapsulated commands (vendor-specific, using control-OUT). - * - * RNDIS requires the status endpoint, since it uses that encapsulation - * mechanism for its funky RPC scheme. - */ - -#define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */ -#define STATUS_BYTECOUNT 16 /* 8 byte header + data */ - -static struct usb_endpoint_descriptor -fs_status_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = __constant_cpu_to_le16 (STATUS_BYTECOUNT), - .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, -}; -#endif - -#ifdef DEV_CONFIG_CDC - -/* the default data interface has no endpoints ... */ - -static const struct usb_interface_descriptor -data_nop_intf = { - .bLength = sizeof data_nop_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 1, - .bAlternateSetting = 0, - .bNumEndpoints = 0, - .bInterfaceClass = USB_CLASS_CDC_DATA, - .bInterfaceSubClass = 0, - .bInterfaceProtocol = 0, -}; - -/* ... but the "real" data interface has two bulk endpoints */ - -static const struct usb_interface_descriptor -data_intf = { - .bLength = sizeof data_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 1, - .bAlternateSetting = 1, - .bNumEndpoints = 2, - .bInterfaceClass = USB_CLASS_CDC_DATA, - .bInterfaceSubClass = 0, - .bInterfaceProtocol = 0, - .iInterface = STRING_DATA, -}; - -#endif - -#ifdef CONFIG_USB_ETH_RNDIS - -/* RNDIS doesn't activate by changing to the "real" altsetting */ - -static const struct usb_interface_descriptor -rndis_data_intf = { - .bLength = sizeof rndis_data_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 1, - .bAlternateSetting = 0, - .bNumEndpoints = 2, - .bInterfaceClass = USB_CLASS_CDC_DATA, - .bInterfaceSubClass = 0, - .bInterfaceProtocol = 0, - .iInterface = STRING_DATA, -}; - -#endif - -#ifdef DEV_CONFIG_SUBSET - -/* - * "Simple" CDC-subset option is a simple vendor-neutral model that most - * full speed controllers can handle: one interface, two bulk endpoints. - * - * To assist host side drivers, we fancy it up a bit, and add descriptors - * so some host side drivers will understand it as a "SAFE" variant. - */ - -static const struct usb_interface_descriptor -subset_data_intf = { - .bLength = sizeof subset_data_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 0, - .bAlternateSetting = 0, - .bNumEndpoints = 2, - .bInterfaceClass = USB_CLASS_COMM, - .bInterfaceSubClass = USB_CDC_SUBCLASS_MDLM, - .bInterfaceProtocol = 0, - .iInterface = STRING_DATA, -}; - -#endif /* SUBSET */ - - -static struct usb_endpoint_descriptor -fs_source_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_BULK, -}; - -static struct usb_endpoint_descriptor -fs_sink_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_OUT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... + */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, }; -static const struct usb_descriptor_header *fs_eth_function [11] = { +static const struct usb_descriptor_header *otg_desc[] = { (struct usb_descriptor_header *) &otg_descriptor, -#ifdef DEV_CONFIG_CDC - /* "cdc" mode descriptors */ - (struct usb_descriptor_header *) &control_intf, - (struct usb_descriptor_header *) &header_desc, - (struct usb_descriptor_header *) &union_desc, - (struct usb_descriptor_header *) ðer_desc, - /* NOTE: status endpoint may need to be removed */ - (struct usb_descriptor_header *) &fs_status_desc, - /* data interface, with altsetting */ - (struct usb_descriptor_header *) &data_nop_intf, - (struct usb_descriptor_header *) &data_intf, - (struct usb_descriptor_header *) &fs_source_desc, - (struct usb_descriptor_header *) &fs_sink_desc, NULL, -#endif /* DEV_CONFIG_CDC */ }; -static inline void __init fs_subset_descriptors(void) -{ -#ifdef DEV_CONFIG_SUBSET - /* behavior is "CDC Subset"; extra descriptors say "SAFE" */ - fs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf; - fs_eth_function[2] = (struct usb_descriptor_header *) &header_desc; - fs_eth_function[3] = (struct usb_descriptor_header *) &mdlm_desc; - fs_eth_function[4] = (struct usb_descriptor_header *) &mdlm_detail_desc; - fs_eth_function[5] = (struct usb_descriptor_header *) ðer_desc; - fs_eth_function[6] = (struct usb_descriptor_header *) &fs_source_desc; - fs_eth_function[7] = (struct usb_descriptor_header *) &fs_sink_desc; - fs_eth_function[8] = NULL; -#else - fs_eth_function[1] = NULL; -#endif -} -#ifdef CONFIG_USB_ETH_RNDIS -static const struct usb_descriptor_header *fs_rndis_function [] = { - (struct usb_descriptor_header *) &otg_descriptor, - /* control interface matches ACM, not Ethernet */ - (struct usb_descriptor_header *) &rndis_control_intf, - (struct usb_descriptor_header *) &header_desc, - (struct usb_descriptor_header *) &call_mgmt_descriptor, - (struct usb_descriptor_header *) &acm_descriptor, - (struct usb_descriptor_header *) &union_desc, - (struct usb_descriptor_header *) &fs_status_desc, - /* data interface has no altsetting */ - (struct usb_descriptor_header *) &rndis_data_intf, - (struct usb_descriptor_header *) &fs_source_desc, - (struct usb_descriptor_header *) &fs_sink_desc, - NULL, -}; -#endif - -/* - * usb 2.0 devices need to expose both high speed and full speed - * descriptors, unless they only run at full speed. - */ +/* string IDs are assigned dynamically */ -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) -static struct usb_endpoint_descriptor -hs_status_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = __constant_cpu_to_le16 (STATUS_BYTECOUNT), - .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, -}; -#endif /* DEV_CONFIG_CDC */ - -static struct usb_endpoint_descriptor -hs_source_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = __constant_cpu_to_le16 (512), -}; +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 -static struct usb_endpoint_descriptor -hs_sink_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, +static char manufacturer[50]; - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = __constant_cpu_to_le16 (512), +static struct usb_string strings_dev[] = { + [STRING_MANUFACTURER_IDX].s = manufacturer, + [STRING_PRODUCT_IDX].s = PREFIX DRIVER_DESC, + { } /* end of list */ }; -static struct usb_qualifier_descriptor -dev_qualifier = { - .bLength = sizeof dev_qualifier, - .bDescriptorType = USB_DT_DEVICE_QUALIFIER, - - .bcdUSB = __constant_cpu_to_le16 (0x0200), - .bDeviceClass = USB_CLASS_COMM, - - .bNumConfigurations = 1, +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, }; -static const struct usb_descriptor_header *hs_eth_function [11] = { - (struct usb_descriptor_header *) &otg_descriptor, -#ifdef DEV_CONFIG_CDC - /* "cdc" mode descriptors */ - (struct usb_descriptor_header *) &control_intf, - (struct usb_descriptor_header *) &header_desc, - (struct usb_descriptor_header *) &union_desc, - (struct usb_descriptor_header *) ðer_desc, - /* NOTE: status endpoint may need to be removed */ - (struct usb_descriptor_header *) &hs_status_desc, - /* data interface, with altsetting */ - (struct usb_descriptor_header *) &data_nop_intf, - (struct usb_descriptor_header *) &data_intf, - (struct usb_descriptor_header *) &hs_source_desc, - (struct usb_descriptor_header *) &hs_sink_desc, +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, NULL, -#endif /* DEV_CONFIG_CDC */ }; -static inline void __init hs_subset_descriptors(void) -{ -#ifdef DEV_CONFIG_SUBSET - /* behavior is "CDC Subset"; extra descriptors say "SAFE" */ - hs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf; - hs_eth_function[2] = (struct usb_descriptor_header *) &header_desc; - hs_eth_function[3] = (struct usb_descriptor_header *) &mdlm_desc; - hs_eth_function[4] = (struct usb_descriptor_header *) &mdlm_detail_desc; - hs_eth_function[5] = (struct usb_descriptor_header *) ðer_desc; - hs_eth_function[6] = (struct usb_descriptor_header *) &hs_source_desc; - hs_eth_function[7] = (struct usb_descriptor_header *) &hs_sink_desc; - hs_eth_function[8] = NULL; -#else - hs_eth_function[1] = NULL; -#endif -} - -#ifdef CONFIG_USB_ETH_RNDIS -static const struct usb_descriptor_header *hs_rndis_function [] = { - (struct usb_descriptor_header *) &otg_descriptor, - /* control interface matches ACM, not Ethernet */ - (struct usb_descriptor_header *) &rndis_control_intf, - (struct usb_descriptor_header *) &header_desc, - (struct usb_descriptor_header *) &call_mgmt_descriptor, - (struct usb_descriptor_header *) &acm_descriptor, - (struct usb_descriptor_header *) &union_desc, - (struct usb_descriptor_header *) &hs_status_desc, - /* data interface has no altsetting */ - (struct usb_descriptor_header *) &rndis_data_intf, - (struct usb_descriptor_header *) &hs_source_desc, - (struct usb_descriptor_header *) &hs_sink_desc, - NULL, -}; -#endif - - -/* maxpacket and other transfer characteristics vary by speed. */ -static inline struct usb_endpoint_descriptor * -ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, - struct usb_endpoint_descriptor *fs) -{ - if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) - return hs; - return fs; -} - +static u8 hostaddr[ETH_ALEN]; /*-------------------------------------------------------------------------*/ -/* descriptors that are built on-demand */ - -static char manufacturer [50]; -static char product_desc [40] = DRIVER_DESC; -static char serial_number [20]; - -/* address that the host will use ... usually assigned at random */ -static char ethaddr [2 * ETH_ALEN + 1]; - -/* static strings, in UTF-8 */ -static struct usb_string strings [] = { - { STRING_MANUFACTURER, manufacturer, }, - { STRING_PRODUCT, product_desc, }, - { STRING_SERIALNUMBER, serial_number, }, - { STRING_DATA, "Ethernet Data", }, - { STRING_ETHADDR, ethaddr, }, -#ifdef DEV_CONFIG_CDC - { STRING_CDC, "CDC Ethernet", }, - { STRING_CONTROL, "CDC Communications Control", }, -#endif -#ifdef DEV_CONFIG_SUBSET - { STRING_SUBSET, "CDC Ethernet Subset", }, -#endif -#ifdef CONFIG_USB_ETH_RNDIS - { STRING_RNDIS, "RNDIS", }, - { STRING_RNDIS_CONTROL, "RNDIS Communications Control", }, -#endif - { } /* end of list */ -}; - -static struct usb_gadget_strings stringtab = { - .language = 0x0409, /* en-us */ - .strings = strings, -}; - /* - * one config, two interfaces: control, data. - * complications: class descriptors, and an altsetting. + * We may not have an RNDIS configuration, but if we do it needs to be + * the first one present. That's to make Microsoft's drivers happy, + * and to follow DOCSIS 1.0 (cable modem standard). */ -static int -config_buf(struct usb_gadget *g, u8 *buf, u8 type, unsigned index, int is_otg) +static int __init rndis_do_config(struct usb_configuration *c) { - int len; - const struct usb_config_descriptor *config; - const struct usb_descriptor_header **function; - int hs = 0; + /* FIXME alloc iConfiguration string, set it in c->strings */ - if (gadget_is_dualspeed(g)) { - hs = (g->speed == USB_SPEED_HIGH); - if (type == USB_DT_OTHER_SPEED_CONFIG) - hs = !hs; + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } -#define which_fn(t) (hs ? hs_ ## t ## _function : fs_ ## t ## _function) - - if (index >= device_desc.bNumConfigurations) - return -EINVAL; - -#ifdef CONFIG_USB_ETH_RNDIS - /* list the RNDIS config first, to make Microsoft's drivers - * happy. DOCSIS 1.0 needs this too. - */ - if (device_desc.bNumConfigurations == 2 && index == 0) { - config = &rndis_config; - function = which_fn (rndis); - } else -#endif - { - config = ð_config; - function = which_fn (eth); - } - - /* for now, don't advertise srp-only devices */ - if (!is_otg) - function++; - - len = usb_gadget_config_buf (config, buf, USB_BUFSIZ, function); - if (len < 0) - return len; - ((struct usb_config_descriptor *) buf)->bDescriptorType = type; - return len; -} - -/*-------------------------------------------------------------------------*/ - -static void eth_start (struct eth_dev *dev, gfp_t gfp_flags); -static int alloc_requests (struct eth_dev *dev, unsigned n, gfp_t gfp_flags); - -static int -set_ether_config (struct eth_dev *dev, gfp_t gfp_flags) -{ - int result = 0; - struct usb_gadget *gadget = dev->gadget; - -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - /* status endpoint used for RNDIS and (optionally) CDC */ - if (!subset_active(dev) && dev->status_ep) { - dev->status = ep_desc (gadget, &hs_status_desc, - &fs_status_desc); - dev->status_ep->driver_data = dev; - - result = usb_ep_enable (dev->status_ep, dev->status); - if (result != 0) { - DEBUG (dev, "enable %s --> %d\n", - dev->status_ep->name, result); - goto done; - } - } -#endif - - dev->in = ep_desc(gadget, &hs_source_desc, &fs_source_desc); - dev->in_ep->driver_data = dev; - - dev->out = ep_desc(gadget, &hs_sink_desc, &fs_sink_desc); - dev->out_ep->driver_data = dev; - - /* With CDC, the host isn't allowed to use these two data - * endpoints in the default altsetting for the interface. - * so we don't activate them yet. Reset from SET_INTERFACE. - * - * Strictly speaking RNDIS should work the same: activation is - * a side effect of setting a packet filter. Deactivation is - * from REMOTE_NDIS_HALT_MSG, reset from REMOTE_NDIS_RESET_MSG. - */ - if (!cdc_active(dev)) { - result = usb_ep_enable (dev->in_ep, dev->in); - if (result != 0) { - DEBUG(dev, "enable %s --> %d\n", - dev->in_ep->name, result); - goto done; - } - - result = usb_ep_enable (dev->out_ep, dev->out); - if (result != 0) { - DEBUG (dev, "enable %s --> %d\n", - dev->out_ep->name, result); - goto done; - } - } - -done: - if (result == 0) - result = alloc_requests (dev, qlen (gadget), gfp_flags); - - /* on error, disable any endpoints */ - if (result < 0) { - if (!subset_active(dev) && dev->status_ep) - (void) usb_ep_disable (dev->status_ep); - dev->status = NULL; - (void) usb_ep_disable (dev->in_ep); - (void) usb_ep_disable (dev->out_ep); - dev->in = NULL; - dev->out = NULL; - } - - /* activate non-CDC configs right away - * this isn't strictly according to the RNDIS spec - */ - else if (!cdc_active (dev)) { - netif_carrier_on (dev->net); - if (netif_running (dev->net)) { - spin_unlock (&dev->lock); - eth_start (dev, GFP_ATOMIC); - spin_lock (&dev->lock); - } - } - - if (result == 0) - DEBUG (dev, "qlen %d\n", qlen (gadget)); - - /* caller is responsible for cleanup on error */ - return result; -} - -static void eth_reset_config (struct eth_dev *dev) -{ - struct usb_request *req; - - if (dev->config == 0) - return; - - DEBUG (dev, "%s\n", __func__); - - netif_stop_queue (dev->net); - netif_carrier_off (dev->net); - - /* RNDIS enters RNDIS_UNINITIALIZED state */ - rndis_uninit(dev->rndis_config); - - /* disable endpoints, forcing (synchronous) completion of - * pending i/o. then free the requests. - */ - if (dev->in) { - usb_ep_disable (dev->in_ep); - spin_lock(&dev->req_lock); - while (likely (!list_empty (&dev->tx_reqs))) { - req = container_of (dev->tx_reqs.next, - struct usb_request, list); - list_del (&req->list); - - spin_unlock(&dev->req_lock); - usb_ep_free_request (dev->in_ep, req); - spin_lock(&dev->req_lock); - } - spin_unlock(&dev->req_lock); - } - if (dev->out) { - usb_ep_disable (dev->out_ep); - spin_lock(&dev->req_lock); - while (likely (!list_empty (&dev->rx_reqs))) { - req = container_of (dev->rx_reqs.next, - struct usb_request, list); - list_del (&req->list); - - spin_unlock(&dev->req_lock); - usb_ep_free_request (dev->out_ep, req); - spin_lock(&dev->req_lock); - } - spin_unlock(&dev->req_lock); - } - - if (dev->status) { - usb_ep_disable (dev->status_ep); - } - dev->rndis = 0; - dev->cdc_filter = 0; - dev->config = 0; -} - -/* change our operational config. must agree with the code - * that returns config descriptors, and altsetting code. - */ -static int -eth_set_config (struct eth_dev *dev, unsigned number, gfp_t gfp_flags) -{ - int result = 0; - struct usb_gadget *gadget = dev->gadget; - - if (gadget_is_sa1100 (gadget) - && dev->config - && atomic_read (&dev->tx_qlen) != 0) { - /* tx fifo is full, but we can't clear it...*/ - INFO (dev, "can't change configurations\n"); - return -ESPIPE; - } - eth_reset_config (dev); - - switch (number) { - case DEV_CONFIG_VALUE: - result = set_ether_config (dev, gfp_flags); - break; -#ifdef CONFIG_USB_ETH_RNDIS - case DEV_RNDIS_CONFIG_VALUE: - dev->rndis = 1; - result = set_ether_config (dev, gfp_flags); - break; -#endif - default: - result = -EINVAL; - /* FALL THROUGH */ - case 0: - break; - } - - if (result) { - if (number) - eth_reset_config (dev); - usb_gadget_vbus_draw(dev->gadget, - gadget_is_otg(dev->gadget) ? 8 : 100); - } else { - char *speed; - unsigned power; - - power = 2 * eth_config.bMaxPower; - usb_gadget_vbus_draw(dev->gadget, power); - - switch (gadget->speed) { - case USB_SPEED_FULL: speed = "full"; break; -#ifdef CONFIG_USB_GADGET_DUALSPEED - case USB_SPEED_HIGH: speed = "high"; break; -#endif - default: speed = "?"; break; - } - - dev->config = number; - INFO (dev, "%s speed config #%d: %d mA, %s, using %s\n", - speed, number, power, driver_desc, - rndis_active(dev) - ? "RNDIS" - : (cdc_active(dev) - ? "CDC Ethernet" - : "CDC Ethernet Subset")); - } - return result; -} - -/*-------------------------------------------------------------------------*/ - -#ifdef DEV_CONFIG_CDC - -/* The interrupt endpoint is used in CDC networking models (Ethernet, ATM) - * only to notify the host about link status changes (which we support) or - * report completion of some encapsulated command (as used in RNDIS). Since - * we want this CDC Ethernet code to be vendor-neutral, we don't use that - * command mechanism; and only one status request is ever queued. - */ - -static void eth_status_complete (struct usb_ep *ep, struct usb_request *req) -{ - struct usb_cdc_notification *event = req->buf; - int value = req->status; - struct eth_dev *dev = ep->driver_data; - /* issue the second notification if host reads the first */ - if (event->bNotificationType == USB_CDC_NOTIFY_NETWORK_CONNECTION - && value == 0) { - __le32 *data = req->buf + sizeof *event; - - event->bmRequestType = 0xA1; - event->bNotificationType = USB_CDC_NOTIFY_SPEED_CHANGE; - event->wValue = __constant_cpu_to_le16 (0); - event->wIndex = __constant_cpu_to_le16 (1); - event->wLength = __constant_cpu_to_le16 (8); - - /* SPEED_CHANGE data is up/down speeds in bits/sec */ - data [0] = data [1] = cpu_to_le32 (BITRATE (dev->gadget)); - - req->length = STATUS_BYTECOUNT; - value = usb_ep_queue (ep, req, GFP_ATOMIC); - DEBUG (dev, "send SPEED_CHANGE --> %d\n", value); - if (value == 0) - return; - } else if (value != -ECONNRESET) - DEBUG (dev, "event %02x --> %d\n", - event->bNotificationType, value); - req->context = NULL; + return rndis_bind_config(c, hostaddr); } -static void issue_start_status (struct eth_dev *dev) -{ - struct usb_request *req = dev->stat_req; - struct usb_cdc_notification *event; - int value; - - DEBUG (dev, "%s, flush old status first\n", __func__); - - /* flush old status - * - * FIXME ugly idiom, maybe we'd be better with just - * a "cancel the whole queue" primitive since any - * unlink-one primitive has way too many error modes. - * here, we "know" toggle is already clear... - * - * FIXME iff req->context != null just dequeue it - */ - usb_ep_disable (dev->status_ep); - usb_ep_enable (dev->status_ep, dev->status); - - /* 3.8.1 says to issue first NETWORK_CONNECTION, then - * a SPEED_CHANGE. could be useful in some configs. - */ - event = req->buf; - event->bmRequestType = 0xA1; - event->bNotificationType = USB_CDC_NOTIFY_NETWORK_CONNECTION; - event->wValue = __constant_cpu_to_le16 (1); /* connected */ - event->wIndex = __constant_cpu_to_le16 (1); - event->wLength = 0; - - req->length = sizeof *event; - req->complete = eth_status_complete; - req->context = dev; - - value = usb_ep_queue (dev->status_ep, req, GFP_ATOMIC); - if (value < 0) - DEBUG (dev, "status buf queue --> %d\n", value); -} - -#endif +static struct usb_configuration rndis_config_driver = { + .label = "RNDIS", + .bind = rndis_do_config, + .bConfigurationValue = 2, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + .bMaxPower = 1, /* 2 mA, minimal */ +}; /*-------------------------------------------------------------------------*/ -static void eth_setup_complete (struct usb_ep *ep, struct usb_request *req) -{ - if (req->status || req->actual != req->length) - DEBUG ((struct eth_dev *) ep->driver_data, - "setup complete --> %d, %d/%d\n", - req->status, req->actual, req->length); -} - -#ifdef CONFIG_USB_ETH_RNDIS - -static void rndis_response_complete (struct usb_ep *ep, struct usb_request *req) -{ - if (req->status || req->actual != req->length) - DEBUG ((struct eth_dev *) ep->driver_data, - "rndis response complete --> %d, %d/%d\n", - req->status, req->actual, req->length); - - /* done sending after USB_CDC_GET_ENCAPSULATED_RESPONSE */ -} - -static void rndis_command_complete (struct usb_ep *ep, struct usb_request *req) -{ - struct eth_dev *dev = ep->driver_data; - int status; - - /* received RNDIS command from USB_CDC_SEND_ENCAPSULATED_COMMAND */ - spin_lock(&dev->lock); - status = rndis_msg_parser (dev->rndis_config, (u8 *) req->buf); - if (status < 0) - ERROR(dev, "%s: rndis parse error %d\n", __func__, status); - spin_unlock(&dev->lock); -} - -#endif /* RNDIS */ - /* - * The setup() callback implements all the ep0 functionality that's not - * handled lower down. CDC has a number of less-common features: - * - * - two interfaces: control, and ethernet data - * - Ethernet data interface has two altsettings: default, and active - * - class-specific descriptors for the control interface - * - class-specific control requests + * We _always_ have an ECM or CDC Subset configuration. */ -static int -eth_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) +static int __init eth_do_config(struct usb_configuration *c) { - struct eth_dev *dev = get_gadget_data (gadget); - struct usb_request *req = dev->req; - int value = -EOPNOTSUPP; - u16 wIndex = le16_to_cpu(ctrl->wIndex); - u16 wValue = le16_to_cpu(ctrl->wValue); - u16 wLength = le16_to_cpu(ctrl->wLength); - - /* descriptors just go into the pre-allocated ep0 buffer, - * while config change events may enable network traffic. - */ - req->complete = eth_setup_complete; - switch (ctrl->bRequest) { - - case USB_REQ_GET_DESCRIPTOR: - if (ctrl->bRequestType != USB_DIR_IN) - break; - switch (wValue >> 8) { - - case USB_DT_DEVICE: - value = min (wLength, (u16) sizeof device_desc); - memcpy (req->buf, &device_desc, value); - break; - case USB_DT_DEVICE_QUALIFIER: - if (!gadget_is_dualspeed(gadget)) - break; - value = min (wLength, (u16) sizeof dev_qualifier); - memcpy (req->buf, &dev_qualifier, value); - break; - - case USB_DT_OTHER_SPEED_CONFIG: - if (!gadget_is_dualspeed(gadget)) - break; - // FALLTHROUGH - case USB_DT_CONFIG: - value = config_buf(gadget, req->buf, - wValue >> 8, - wValue & 0xff, - gadget_is_otg(gadget)); - if (value >= 0) - value = min (wLength, (u16) value); - break; - - case USB_DT_STRING: - value = usb_gadget_get_string (&stringtab, - wValue & 0xff, req->buf); - if (value >= 0) - value = min (wLength, (u16) value); - break; - } - break; - - case USB_REQ_SET_CONFIGURATION: - if (ctrl->bRequestType != 0) - break; - if (gadget->a_hnp_support) - DEBUG (dev, "HNP available\n"); - else if (gadget->a_alt_hnp_support) - DEBUG (dev, "HNP needs a different root port\n"); - spin_lock (&dev->lock); - value = eth_set_config (dev, wValue, GFP_ATOMIC); - spin_unlock (&dev->lock); - break; - case USB_REQ_GET_CONFIGURATION: - if (ctrl->bRequestType != USB_DIR_IN) - break; - *(u8 *)req->buf = dev->config; - value = min (wLength, (u16) 1); - break; + /* FIXME alloc iConfiguration string, set it in c->strings */ - case USB_REQ_SET_INTERFACE: - if (ctrl->bRequestType != USB_RECIP_INTERFACE - || !dev->config - || wIndex > 1) - break; - if (!cdc_active(dev) && wIndex != 0) - break; - spin_lock (&dev->lock); - - /* PXA hardware partially handles SET_INTERFACE; - * we need to kluge around that interference. - */ - if (gadget_is_pxa (gadget)) { - value = eth_set_config (dev, DEV_CONFIG_VALUE, - GFP_ATOMIC); - goto done_set_intf; - } - -#ifdef DEV_CONFIG_CDC - switch (wIndex) { - case 0: /* control/master intf */ - if (wValue != 0) - break; - if (dev->status) { - usb_ep_disable (dev->status_ep); - usb_ep_enable (dev->status_ep, dev->status); - } - value = 0; - break; - case 1: /* data intf */ - if (wValue > 1) - break; - usb_ep_disable (dev->in_ep); - usb_ep_disable (dev->out_ep); - - /* CDC requires the data transfers not be done from - * the default interface setting ... also, setting - * the non-default interface resets filters etc. - */ - if (wValue == 1) { - if (!cdc_active (dev)) - break; - usb_ep_enable (dev->in_ep, dev->in); - usb_ep_enable (dev->out_ep, dev->out); - dev->cdc_filter = DEFAULT_FILTER; - netif_carrier_on (dev->net); - if (dev->status) - issue_start_status (dev); - if (netif_running (dev->net)) { - spin_unlock (&dev->lock); - eth_start (dev, GFP_ATOMIC); - spin_lock (&dev->lock); - } - } else { - netif_stop_queue (dev->net); - netif_carrier_off (dev->net); - } - value = 0; - break; - } -#else - /* FIXME this is wrong, as is the assumption that - * all non-PXA hardware talks real CDC ... - */ - dev_warn (&gadget->dev, "set_interface ignored!\n"); -#endif /* DEV_CONFIG_CDC */ - -done_set_intf: - spin_unlock (&dev->lock); - break; - case USB_REQ_GET_INTERFACE: - if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE) - || !dev->config - || wIndex > 1) - break; - if (!(cdc_active(dev) || rndis_active(dev)) && wIndex != 0) - break; - - /* for CDC, iff carrier is on, data interface is active. */ - if (rndis_active(dev) || wIndex != 1) - *(u8 *)req->buf = 0; - else - *(u8 *)req->buf = netif_carrier_ok (dev->net) ? 1 : 0; - value = min (wLength, (u16) 1); - break; - -#ifdef DEV_CONFIG_CDC - case USB_CDC_SET_ETHERNET_PACKET_FILTER: - /* see 6.2.30: no data, wIndex = interface, - * wValue = packet filter bitmap - */ - if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE) - || !cdc_active(dev) - || wLength != 0 - || wIndex > 1) - break; - DEBUG (dev, "packet filter %02x\n", wValue); - dev->cdc_filter = wValue; - value = 0; - break; - - /* and potentially: - * case USB_CDC_SET_ETHERNET_MULTICAST_FILTERS: - * case USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER: - * case USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER: - * case USB_CDC_GET_ETHERNET_STATISTIC: - */ - -#endif /* DEV_CONFIG_CDC */ - -#ifdef CONFIG_USB_ETH_RNDIS - /* RNDIS uses the CDC command encapsulation mechanism to implement - * an RPC scheme, with much getting/setting of attributes by OID. - */ - case USB_CDC_SEND_ENCAPSULATED_COMMAND: - if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE) - || !rndis_active(dev) - || wLength > USB_BUFSIZ - || wValue - || rndis_control_intf.bInterfaceNumber - != wIndex) - break; - /* read the request, then process it */ - value = wLength; - req->complete = rndis_command_complete; - /* later, rndis_control_ack () sends a notification */ - break; - - case USB_CDC_GET_ENCAPSULATED_RESPONSE: - if ((USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE) - == ctrl->bRequestType - && rndis_active(dev) - // && wLength >= 0x0400 - && !wValue - && rndis_control_intf.bInterfaceNumber - == wIndex) { - u8 *buf; - u32 n; - - /* return the result */ - buf = rndis_get_next_response(dev->rndis_config, &n); - if (buf) { - memcpy(req->buf, buf, n); - req->complete = rndis_response_complete; - rndis_free_response(dev->rndis_config, buf); - value = n; - } - /* else stalls ... spec says to avoid that */ - } - break; -#endif /* RNDIS */ - - default: - VDEBUG (dev, - "unknown control req%02x.%02x v%04x i%04x l%d\n", - ctrl->bRequestType, ctrl->bRequest, - wValue, wIndex, wLength); - } - - /* respond with data transfer before status phase? */ - if (value >= 0) { - req->length = value; - req->zero = value < wLength - && (value % gadget->ep0->maxpacket) == 0; - value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC); - if (value < 0) { - DEBUG (dev, "ep_queue --> %d\n", value); - req->status = 0; - eth_setup_complete (gadget->ep0, req); - } + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - /* host either stalls (value < 0) or reports success */ - return value; -} - -static void -eth_disconnect (struct usb_gadget *gadget) -{ - struct eth_dev *dev = get_gadget_data (gadget); - unsigned long flags; - - spin_lock_irqsave (&dev->lock, flags); - netif_stop_queue (dev->net); - netif_carrier_off (dev->net); - eth_reset_config (dev); - spin_unlock_irqrestore (&dev->lock, flags); - - /* next we may get setup() calls to enumerate new connections; - * or an unbind() during shutdown (including removing module). - */ -} - -/*-------------------------------------------------------------------------*/ - -/* NETWORK DRIVER HOOKUP (to the layer above this driver) */ - -static int eth_change_mtu (struct net_device *net, int new_mtu) -{ - struct eth_dev *dev = netdev_priv(net); - - if (dev->rndis) - return -EBUSY; - - if (new_mtu <= ETH_HLEN || new_mtu > ETH_FRAME_LEN) - return -ERANGE; - /* no zero-length packet read wanted after mtu-sized packets */ - if (((new_mtu + sizeof (struct ethhdr)) % dev->in_ep->maxpacket) == 0) - return -EDOM; - net->mtu = new_mtu; - return 0; -} - -static struct net_device_stats *eth_get_stats (struct net_device *net) -{ - return &((struct eth_dev *)netdev_priv(net))->stats; -} - -static void eth_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *p) -{ - struct eth_dev *dev = netdev_priv(net); - strlcpy(p->driver, shortname, sizeof p->driver); - strlcpy(p->version, DRIVER_VERSION, sizeof p->version); - strlcpy(p->fw_version, dev->gadget->name, sizeof p->fw_version); - strlcpy (p->bus_info, dev_name(&dev->gadget->dev), sizeof p->bus_info); -} - -static u32 eth_get_link(struct net_device *net) -{ - struct eth_dev *dev = netdev_priv(net); - return dev->gadget->speed != USB_SPEED_UNKNOWN; -} - -static struct ethtool_ops ops = { - .get_drvinfo = eth_get_drvinfo, - .get_link = eth_get_link -}; - -static void defer_kevent (struct eth_dev *dev, int flag) -{ - if (test_and_set_bit (flag, &dev->todo)) - return; - if (!schedule_work (&dev->work)) - ERROR (dev, "kevent %d may have been dropped\n", flag); + if (can_support_ecm(c->cdev->gadget)) + return ecm_bind_config(c, hostaddr); else - DEBUG (dev, "kevent %d scheduled\n", flag); -} - -static void rx_complete (struct usb_ep *ep, struct usb_request *req); - -static int -rx_submit (struct eth_dev *dev, struct usb_request *req, gfp_t gfp_flags) -{ - struct sk_buff *skb; - int retval = -ENOMEM; - size_t size; - - /* Padding up to RX_EXTRA handles minor disagreements with host. - * Normally we use the USB "terminate on short read" convention; - * so allow up to (N*maxpacket), since that memory is normally - * already allocated. Some hardware doesn't deal well with short - * reads (e.g. DMA must be N*maxpacket), so for now don't trim a - * byte off the end (to force hardware errors on overflow). - * - * RNDIS uses internal framing, and explicitly allows senders to - * pad to end-of-packet. That's potentially nice for speed, - * but means receivers can't recover synch on their own. - */ - size = (sizeof (struct ethhdr) + dev->net->mtu + RX_EXTRA); - size += dev->out_ep->maxpacket - 1; - if (rndis_active(dev)) - size += sizeof (struct rndis_packet_msg_type); - size -= size % dev->out_ep->maxpacket; - - skb = alloc_skb(size + NET_IP_ALIGN, gfp_flags); - if (skb == NULL) { - DEBUG (dev, "no rx skb\n"); - goto enomem; - } - - /* Some platforms perform better when IP packets are aligned, - * but on at least one, checksumming fails otherwise. Note: - * RNDIS headers involve variable numbers of LE32 values. - */ - skb_reserve(skb, NET_IP_ALIGN); - - req->buf = skb->data; - req->length = size; - req->complete = rx_complete; - req->context = skb; - - retval = usb_ep_queue (dev->out_ep, req, gfp_flags); - if (retval == -ENOMEM) -enomem: - defer_kevent (dev, WORK_RX_MEMORY); - if (retval) { - DEBUG (dev, "rx submit --> %d\n", retval); - if (skb) - dev_kfree_skb_any(skb); - spin_lock(&dev->req_lock); - list_add (&req->list, &dev->rx_reqs); - spin_unlock(&dev->req_lock); - } - return retval; -} - -static void rx_complete (struct usb_ep *ep, struct usb_request *req) -{ - struct sk_buff *skb = req->context; - struct eth_dev *dev = ep->driver_data; - int status = req->status; - - switch (status) { - - /* normal completion */ - case 0: - skb_put (skb, req->actual); - /* we know MaxPacketsPerTransfer == 1 here */ - if (rndis_active(dev)) - status = rndis_rm_hdr (skb); - if (status < 0 - || ETH_HLEN > skb->len - || skb->len > ETH_FRAME_LEN) { - dev->stats.rx_errors++; - dev->stats.rx_length_errors++; - DEBUG (dev, "rx length %d\n", skb->len); - break; - } - - skb->protocol = eth_type_trans (skb, dev->net); - dev->stats.rx_packets++; - dev->stats.rx_bytes += skb->len; - - /* no buffer copies needed, unless hardware can't - * use skb buffers. - */ - status = netif_rx (skb); - skb = NULL; - break; - - /* software-driven interface shutdown */ - case -ECONNRESET: // unlink - case -ESHUTDOWN: // disconnect etc - VDEBUG (dev, "rx shutdown, code %d\n", status); - goto quiesce; - - /* for hardware automagic (such as pxa) */ - case -ECONNABORTED: // endpoint reset - DEBUG (dev, "rx %s reset\n", ep->name); - defer_kevent (dev, WORK_RX_MEMORY); -quiesce: - dev_kfree_skb_any (skb); - goto clean; - - /* data overrun */ - case -EOVERFLOW: - dev->stats.rx_over_errors++; - // FALLTHROUGH - - default: - dev->stats.rx_errors++; - DEBUG (dev, "rx status %d\n", status); - break; - } - - if (skb) - dev_kfree_skb_any (skb); - if (!netif_running (dev->net)) { -clean: - spin_lock(&dev->req_lock); - list_add (&req->list, &dev->rx_reqs); - spin_unlock(&dev->req_lock); - req = NULL; - } - if (req) - rx_submit (dev, req, GFP_ATOMIC); -} - -static int prealloc (struct list_head *list, struct usb_ep *ep, - unsigned n, gfp_t gfp_flags) -{ - unsigned i; - struct usb_request *req; - - if (!n) - return -ENOMEM; - - /* queue/recycle up to N requests */ - i = n; - list_for_each_entry (req, list, list) { - if (i-- == 0) - goto extra; - } - while (i--) { - req = usb_ep_alloc_request (ep, gfp_flags); - if (!req) - return list_empty (list) ? -ENOMEM : 0; - list_add (&req->list, list); - } - return 0; - -extra: - /* free extras */ - for (;;) { - struct list_head *next; - - next = req->list.next; - list_del (&req->list); - usb_ep_free_request (ep, req); - - if (next == list) - break; - - req = container_of (next, struct usb_request, list); - } - return 0; -} - -static int alloc_requests (struct eth_dev *dev, unsigned n, gfp_t gfp_flags) -{ - int status; - - spin_lock(&dev->req_lock); - status = prealloc (&dev->tx_reqs, dev->in_ep, n, gfp_flags); - if (status < 0) - goto fail; - status = prealloc (&dev->rx_reqs, dev->out_ep, n, gfp_flags); - if (status < 0) - goto fail; - goto done; -fail: - DEBUG (dev, "can't alloc requests\n"); -done: - spin_unlock(&dev->req_lock); - return status; + return geth_bind_config(c, hostaddr); } -static void rx_fill (struct eth_dev *dev, gfp_t gfp_flags) -{ - struct usb_request *req; - unsigned long flags; - - /* fill unused rxq slots with some skb */ - spin_lock_irqsave(&dev->req_lock, flags); - while (!list_empty (&dev->rx_reqs)) { - req = container_of (dev->rx_reqs.next, - struct usb_request, list); - list_del_init (&req->list); - spin_unlock_irqrestore(&dev->req_lock, flags); - - if (rx_submit (dev, req, gfp_flags) < 0) { - defer_kevent (dev, WORK_RX_MEMORY); - return; - } - - spin_lock_irqsave(&dev->req_lock, flags); - } - spin_unlock_irqrestore(&dev->req_lock, flags); -} - -static void eth_work (struct work_struct *work) -{ - struct eth_dev *dev = container_of(work, struct eth_dev, work); - - if (test_and_clear_bit (WORK_RX_MEMORY, &dev->todo)) { - if (netif_running (dev->net)) - rx_fill (dev, GFP_KERNEL); - } - - if (dev->todo) - DEBUG (dev, "work done, flags = 0x%lx\n", dev->todo); -} - -static void tx_complete (struct usb_ep *ep, struct usb_request *req) -{ - struct sk_buff *skb = req->context; - struct eth_dev *dev = ep->driver_data; - - switch (req->status) { - default: - dev->stats.tx_errors++; - VDEBUG (dev, "tx err %d\n", req->status); - /* FALLTHROUGH */ - case -ECONNRESET: // unlink - case -ESHUTDOWN: // disconnect etc - break; - case 0: - dev->stats.tx_bytes += skb->len; - } - dev->stats.tx_packets++; - - spin_lock(&dev->req_lock); - list_add (&req->list, &dev->tx_reqs); - spin_unlock(&dev->req_lock); - dev_kfree_skb_any (skb); - - atomic_dec (&dev->tx_qlen); - if (netif_carrier_ok (dev->net)) - netif_wake_queue (dev->net); -} - -static inline int eth_is_promisc (struct eth_dev *dev) -{ - /* no filters for the CDC subset; always promisc */ - if (subset_active (dev)) - return 1; - return dev->cdc_filter & USB_CDC_PACKET_TYPE_PROMISCUOUS; -} - -static int eth_start_xmit (struct sk_buff *skb, struct net_device *net) -{ - struct eth_dev *dev = netdev_priv(net); - int length = skb->len; - int retval; - struct usb_request *req = NULL; - unsigned long flags; - - /* apply outgoing CDC or RNDIS filters */ - if (!eth_is_promisc (dev)) { - u8 *dest = skb->data; - - if (is_multicast_ether_addr(dest)) { - u16 type; - - /* ignores USB_CDC_PACKET_TYPE_MULTICAST and host - * SET_ETHERNET_MULTICAST_FILTERS requests - */ - if (is_broadcast_ether_addr(dest)) - type = USB_CDC_PACKET_TYPE_BROADCAST; - else - type = USB_CDC_PACKET_TYPE_ALL_MULTICAST; - if (!(dev->cdc_filter & type)) { - dev_kfree_skb_any (skb); - return 0; - } - } - /* ignores USB_CDC_PACKET_TYPE_DIRECTED */ - } - - spin_lock_irqsave(&dev->req_lock, flags); - /* - * this freelist can be empty if an interrupt triggered disconnect() - * and reconfigured the gadget (shutting down this queue) after the - * network stack decided to xmit but before we got the spinlock. - */ - if (list_empty(&dev->tx_reqs)) { - spin_unlock_irqrestore(&dev->req_lock, flags); - return 1; - } - - req = container_of (dev->tx_reqs.next, struct usb_request, list); - list_del (&req->list); - - /* temporarily stop TX queue when the freelist empties */ - if (list_empty (&dev->tx_reqs)) - netif_stop_queue (net); - spin_unlock_irqrestore(&dev->req_lock, flags); - - /* no buffer copies needed, unless the network stack did it - * or the hardware can't use skb buffers. - * or there's not enough space for any RNDIS headers we need - */ - if (rndis_active(dev)) { - struct sk_buff *skb_rndis; - - skb_rndis = skb_realloc_headroom (skb, - sizeof (struct rndis_packet_msg_type)); - if (!skb_rndis) - goto drop; - - dev_kfree_skb_any (skb); - skb = skb_rndis; - rndis_add_hdr (skb); - length = skb->len; - } - req->buf = skb->data; - req->context = skb; - req->complete = tx_complete; - - /* use zlp framing on tx for strict CDC-Ether conformance, - * though any robust network rx path ignores extra padding. - * and some hardware doesn't like to write zlps. - */ - req->zero = 1; - if (!dev->zlp && (length % dev->in_ep->maxpacket) == 0) - length++; - - req->length = length; - - /* throttle highspeed IRQ rate back slightly */ - if (gadget_is_dualspeed(dev->gadget)) - req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH) - ? ((atomic_read(&dev->tx_qlen) % qmult) != 0) - : 0; - - retval = usb_ep_queue (dev->in_ep, req, GFP_ATOMIC); - switch (retval) { - default: - DEBUG (dev, "tx queue err %d\n", retval); - break; - case 0: - net->trans_start = jiffies; - atomic_inc (&dev->tx_qlen); - } - - if (retval) { -drop: - dev->stats.tx_dropped++; - dev_kfree_skb_any (skb); - spin_lock_irqsave(&dev->req_lock, flags); - if (list_empty (&dev->tx_reqs)) - netif_start_queue (net); - list_add (&req->list, &dev->tx_reqs); - spin_unlock_irqrestore(&dev->req_lock, flags); - } - return 0; -} - -/*-------------------------------------------------------------------------*/ - -#ifdef CONFIG_USB_ETH_RNDIS - -/* The interrupt endpoint is used in RNDIS to notify the host when messages - * other than data packets are available ... notably the REMOTE_NDIS_*_CMPLT - * messages, but also REMOTE_NDIS_INDICATE_STATUS_MSG and potentially even - * REMOTE_NDIS_KEEPALIVE_MSG. - * - * The RNDIS control queue is processed by GET_ENCAPSULATED_RESPONSE, and - * normally just one notification will be queued. - */ - -static struct usb_request *eth_req_alloc (struct usb_ep *, unsigned, gfp_t); -static void eth_req_free (struct usb_ep *ep, struct usb_request *req); - -static void -rndis_control_ack_complete (struct usb_ep *ep, struct usb_request *req) -{ - struct eth_dev *dev = ep->driver_data; - - if (req->status || req->actual != req->length) - DEBUG (dev, - "rndis control ack complete --> %d, %d/%d\n", - req->status, req->actual, req->length); - req->context = NULL; - - if (req != dev->stat_req) - eth_req_free(ep, req); -} - -static void rndis_resp_avail(void *_dev) -{ - struct eth_dev *dev = _dev; - int length; - struct usb_request *resp = dev->stat_req; - - /* in case RNDIS calls this after disconnect */ - if (!dev->status) { - DEBUG (dev, "status ENODEV\n"); - return; - } - - /* in case queue length > 1 */ - if (resp->context) { - resp = eth_req_alloc (dev->status_ep, 8, GFP_ATOMIC); - if (!resp) - return; - } - - /* Send RNDIS RESPONSE_AVAILABLE notification; - * USB_CDC_NOTIFY_RESPONSE_AVAILABLE should work too - */ - resp->length = 8; - resp->complete = rndis_control_ack_complete; - resp->context = dev; - - *((__le32 *) resp->buf) = __constant_cpu_to_le32 (1); - *((__le32 *) resp->buf + 1) = __constant_cpu_to_le32 (0); - - length = usb_ep_queue (dev->status_ep, resp, GFP_ATOMIC); - if (length < 0) { - resp->status = 0; - rndis_control_ack_complete (dev->status_ep, resp); - } -} - -#else - -#define rndis_resp_avail NULL - -#endif /* RNDIS */ - -static void eth_start (struct eth_dev *dev, gfp_t gfp_flags) -{ - DEBUG (dev, "%s\n", __func__); - - /* fill the rx queue */ - rx_fill (dev, gfp_flags); - - /* and open the tx floodgates */ - atomic_set (&dev->tx_qlen, 0); - netif_wake_queue (dev->net); - if (rndis_active(dev)) { - rndis_set_param_medium (dev->rndis_config, - NDIS_MEDIUM_802_3, - BITRATE(dev->gadget)/100); - (void) rndis_signal_connect (dev->rndis_config); - } -} - -static int eth_open (struct net_device *net) -{ - struct eth_dev *dev = netdev_priv(net); - - DEBUG (dev, "%s\n", __func__); - if (netif_carrier_ok (dev->net)) - eth_start (dev, GFP_KERNEL); - return 0; -} - -static int eth_stop (struct net_device *net) -{ - struct eth_dev *dev = netdev_priv(net); - - VDEBUG (dev, "%s\n", __func__); - netif_stop_queue (net); - - DEBUG (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld\n", - dev->stats.rx_packets, dev->stats.tx_packets, - dev->stats.rx_errors, dev->stats.tx_errors - ); - - /* ensure there are no more active requests */ - if (dev->config) { - usb_ep_disable (dev->in_ep); - usb_ep_disable (dev->out_ep); - if (netif_carrier_ok (dev->net)) { - DEBUG (dev, "host still using in/out endpoints\n"); - // FIXME idiom may leave toggle wrong here - usb_ep_enable (dev->in_ep, dev->in); - usb_ep_enable (dev->out_ep, dev->out); - } - if (dev->status_ep) { - usb_ep_disable (dev->status_ep); - usb_ep_enable (dev->status_ep, dev->status); - } - } - - if (rndis_active(dev)) { - rndis_set_param_medium(dev->rndis_config, NDIS_MEDIUM_802_3, 0); - (void) rndis_signal_disconnect (dev->rndis_config); - } - - return 0; -} +static struct usb_configuration eth_config_driver = { + /* .label = f(hardware) */ + .bind = eth_do_config, + .bConfigurationValue = 1, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + .bMaxPower = 1, /* 2 mA, minimal */ +}; /*-------------------------------------------------------------------------*/ -static struct usb_request * -eth_req_alloc (struct usb_ep *ep, unsigned size, gfp_t gfp_flags) +static int __init eth_bind(struct usb_composite_dev *cdev) { - struct usb_request *req; - - req = usb_ep_alloc_request (ep, gfp_flags); - if (!req) - return NULL; - - req->buf = kmalloc (size, gfp_flags); - if (!req->buf) { - usb_ep_free_request (ep, req); - req = NULL; - } - return req; -} - -static void -eth_req_free (struct usb_ep *ep, struct usb_request *req) -{ - kfree (req->buf); - usb_ep_free_request (ep, req); -} - - -static void /* __init_or_exit */ -eth_unbind (struct usb_gadget *gadget) -{ - struct eth_dev *dev = get_gadget_data (gadget); - - DEBUG (dev, "unbind\n"); - rndis_deregister (dev->rndis_config); - rndis_exit (); - - /* we've already been disconnected ... no i/o is active */ - if (dev->req) { - eth_req_free (gadget->ep0, dev->req); - dev->req = NULL; - } - if (dev->stat_req) { - eth_req_free (dev->status_ep, dev->stat_req); - dev->stat_req = NULL; - } - - unregister_netdev (dev->net); - free_netdev(dev->net); - - /* assuming we used keventd, it must quiesce too */ - flush_scheduled_work (); - set_gadget_data (gadget, NULL); -} - -static u8 __init nibble (unsigned char c) -{ - if (likely (isdigit (c))) - return c - '0'; - c = toupper (c); - if (likely (isxdigit (c))) - return 10 + c - 'A'; - return 0; -} + int gcnum; + struct usb_gadget *gadget = cdev->gadget; + int status; -static int __init get_ether_addr(const char *str, u8 *dev_addr) -{ - if (str) { - unsigned i; + /* set up network link layer */ + status = gether_setup(cdev->gadget, hostaddr); + if (status < 0) + return status; - for (i = 0; i < 6; i++) { - unsigned char num; + /* set up main config label and device descriptor */ + if (can_support_ecm(cdev->gadget)) { + /* ECM */ + eth_config_driver.label = "CDC Ethernet (ECM)"; + } else { + /* CDC Subset */ + eth_config_driver.label = "CDC Subset/SAFE"; - if((*str == '.') || (*str == ':')) - str++; - num = nibble(*str++) << 4; - num |= (nibble(*str++)); - dev_addr [i] = num; - } - if (is_valid_ether_addr (dev_addr)) - return 0; + device_desc.idVendor = cpu_to_le16(SIMPLE_VENDOR_NUM), + device_desc.idProduct = cpu_to_le16(SIMPLE_PRODUCT_NUM), + device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC; } - random_ether_addr(dev_addr); - return 1; -} - -static int __init -eth_bind (struct usb_gadget *gadget) -{ - struct eth_dev *dev; - struct net_device *net; - u8 cdc = 1, zlp = 1, rndis = 1; - struct usb_ep *in_ep, *out_ep, *status_ep = NULL; - int status = -ENOMEM; - int gcnum; - - /* these flags are only ever cleared; compiler take note */ -#ifndef DEV_CONFIG_CDC - cdc = 0; -#endif -#ifndef CONFIG_USB_ETH_RNDIS - rndis = 0; -#endif - /* Because most host side USB stacks handle CDC Ethernet, that - * standard protocol is _strongly_ preferred for interop purposes. - * (By everyone except Microsoft.) - */ - if (gadget_is_pxa (gadget)) { - /* pxa doesn't support altsettings */ - cdc = 0; - } else if (gadget_is_musbhdrc(gadget)) { - /* reduce tx dma overhead by avoiding special cases */ - zlp = 0; - } else if (gadget_is_sh(gadget)) { - /* sh doesn't support multiple interfaces or configs */ - cdc = 0; - rndis = 0; - } else if (gadget_is_sa1100 (gadget)) { - /* hardware can't write zlps */ - zlp = 0; - /* sa1100 CAN do CDC, without status endpoint ... we use - * non-CDC to be compatible with ARM Linux-2.4 "usb-eth". - */ - cdc = 0; + if (has_rndis()) { + /* RNDIS plus ECM-or-Subset */ + device_desc.idVendor = cpu_to_le16(RNDIS_VENDOR_NUM), + device_desc.idProduct = cpu_to_le16(RNDIS_PRODUCT_NUM), + device_desc.bNumConfigurations = 2; } - gcnum = usb_gadget_controller_number (gadget); + gcnum = usb_gadget_controller_number(gadget); if (gcnum >= 0) - device_desc.bcdDevice = cpu_to_le16 (0x0200 + gcnum); + device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); else { - /* can't assume CDC works. don't want to default to - * anything less functional on CDC-capable hardware, - * so we fail in this case. + /* We assume that can_support_ecm() tells the truth; + * but if the controller isn't recognized at all then + * that assumption is a bit more likely to be wrong. */ - dev_err (&gadget->dev, - "controller '%s' not recognized\n", - gadget->name); - return -ENODEV; + WARN(cdev, "controller '%s' not recognized; trying %s\n", + gadget->name, + eth_config_driver.label); + device_desc.bcdDevice = + __constant_cpu_to_le16(0x0300 | 0x0099); } - snprintf (manufacturer, sizeof manufacturer, "%s %s/%s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - /* If there's an RNDIS configuration, that's what Windows wants to - * be using ... so use these product IDs here and in the "linux.inf" - * needed to install MSFT drivers. Current Linux kernels will use - * the second configuration if it's CDC Ethernet, and need some help - * to choose the right configuration otherwise. - */ - if (rndis) { - device_desc.idVendor = - __constant_cpu_to_le16(RNDIS_VENDOR_NUM); - device_desc.idProduct = - __constant_cpu_to_le16(RNDIS_PRODUCT_NUM); - snprintf (product_desc, sizeof product_desc, - "RNDIS/%s", driver_desc); - /* CDC subset ... recognized by Linux since 2.4.10, but Windows - * drivers aren't widely available. (That may be improved by - * supporting one submode of the "SAFE" variant of MDLM.) + /* Allocate string descriptor numbers ... note that string + * contents can be overridden by the composite_dev glue. */ - } else if (!cdc) { - device_desc.idVendor = - __constant_cpu_to_le16(SIMPLE_VENDOR_NUM); - device_desc.idProduct = - __constant_cpu_to_le16(SIMPLE_PRODUCT_NUM); - } - - /* support optional vendor/distro customization */ - if (idVendor) { - if (!idProduct) { - dev_err (&gadget->dev, "idVendor needs idProduct!\n"); - return -ENODEV; - } - device_desc.idVendor = cpu_to_le16(idVendor); - device_desc.idProduct = cpu_to_le16(idProduct); - if (bcdDevice) - device_desc.bcdDevice = cpu_to_le16(bcdDevice); - } - if (iManufacturer) - strlcpy (manufacturer, iManufacturer, sizeof manufacturer); - if (iProduct) - strlcpy (product_desc, iProduct, sizeof product_desc); - if (iSerialNumber) { - device_desc.iSerialNumber = STRING_SERIALNUMBER, - strlcpy(serial_number, iSerialNumber, sizeof serial_number); - } - - /* all we really need is bulk IN/OUT */ - usb_ep_autoconfig_reset (gadget); - in_ep = usb_ep_autoconfig (gadget, &fs_source_desc); - if (!in_ep) { -autoconf_fail: - dev_err (&gadget->dev, - "can't autoconfigure on %s\n", - gadget->name); - return -ENODEV; - } - in_ep->driver_data = in_ep; /* claim */ - - out_ep = usb_ep_autoconfig (gadget, &fs_sink_desc); - if (!out_ep) - goto autoconf_fail; - out_ep->driver_data = out_ep; /* claim */ - -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - /* CDC Ethernet control interface doesn't require a status endpoint. - * Since some hosts expect one, try to allocate one anyway. - */ - if (cdc || rndis) { - status_ep = usb_ep_autoconfig (gadget, &fs_status_desc); - if (status_ep) { - status_ep->driver_data = status_ep; /* claim */ - } else if (rndis) { - dev_err (&gadget->dev, - "can't run RNDIS on %s\n", - gadget->name); - return -ENODEV; -#ifdef DEV_CONFIG_CDC - /* pxa25x only does CDC subset; often used with RNDIS */ - } else if (cdc) { - control_intf.bNumEndpoints = 0; - /* FIXME remove endpoint from descriptor list */ -#endif - } - } -#endif - - /* one config: cdc, else minimal subset */ - if (!cdc) { - eth_config.bNumInterfaces = 1; - eth_config.iConfiguration = STRING_SUBSET; - - /* use functions to set these up, in case we're built to work - * with multiple controllers and must override CDC Ethernet. - */ - fs_subset_descriptors(); - hs_subset_descriptors(); - } - - device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; - usb_gadget_set_selfpowered (gadget); - - /* For now RNDIS is always a second config */ - if (rndis) - device_desc.bNumConfigurations = 2; - - if (gadget_is_dualspeed(gadget)) { - if (rndis) - dev_qualifier.bNumConfigurations = 2; - else if (!cdc) - dev_qualifier.bDeviceClass = USB_CLASS_VENDOR_SPEC; - - /* assumes ep0 uses the same value for both speeds ... */ - dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0; - - /* and that all endpoints are dual-speed */ - hs_source_desc.bEndpointAddress = - fs_source_desc.bEndpointAddress; - hs_sink_desc.bEndpointAddress = - fs_sink_desc.bEndpointAddress; -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - if (status_ep) - hs_status_desc.bEndpointAddress = - fs_status_desc.bEndpointAddress; -#endif - } - - if (gadget_is_otg(gadget)) { - otg_descriptor.bmAttributes |= USB_OTG_HNP, - eth_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - eth_config.bMaxPower = 4; -#ifdef CONFIG_USB_ETH_RNDIS - rndis_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - rndis_config.bMaxPower = 4; -#endif - } - net = alloc_etherdev (sizeof *dev); - if (!net) - return status; - dev = netdev_priv(net); - spin_lock_init (&dev->lock); - spin_lock_init (&dev->req_lock); - INIT_WORK (&dev->work, eth_work); - INIT_LIST_HEAD (&dev->tx_reqs); - INIT_LIST_HEAD (&dev->rx_reqs); - - /* network device setup */ - dev->net = net; - strcpy (net->name, "usb%d"); - dev->cdc = cdc; - dev->zlp = zlp; - - dev->in_ep = in_ep; - dev->out_ep = out_ep; - dev->status_ep = status_ep; - - /* Module params for these addresses should come from ID proms. - * The host side address is used with CDC and RNDIS, and commonly - * ends up in a persistent config database. It's not clear if - * host side code for the SAFE thing cares -- its original BLAN - * thing didn't, Sharp never assigned those addresses on Zaurii. - */ - if (get_ether_addr(dev_addr, net->dev_addr)) - dev_warn(&gadget->dev, - "using random %s ethernet address\n", "self"); - if (get_ether_addr(host_addr, dev->host_mac)) - dev_warn(&gadget->dev, - "using random %s ethernet address\n", "host"); - snprintf (ethaddr, sizeof ethaddr, "%02X%02X%02X%02X%02X%02X", - dev->host_mac [0], dev->host_mac [1], - dev->host_mac [2], dev->host_mac [3], - dev->host_mac [4], dev->host_mac [5]); - - if (rndis) { - status = rndis_init(); - if (status < 0) { - dev_err (&gadget->dev, "can't init RNDIS, %d\n", - status); - goto fail; - } - } - - net->change_mtu = eth_change_mtu; - net->get_stats = eth_get_stats; - net->hard_start_xmit = eth_start_xmit; - net->open = eth_open; - net->stop = eth_stop; - // watchdog_timeo, tx_timeout ... - // set_multicast_list - SET_ETHTOOL_OPS(net, &ops); + /* device descriptor strings: manufacturer, product */ + snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", + init_utsname()->sysname, init_utsname()->release, + gadget->name); + status = usb_string_id(cdev); + if (status < 0) + goto fail; + strings_dev[STRING_MANUFACTURER_IDX].id = status; + device_desc.iManufacturer = status; - /* preallocate control message data and buffer */ - dev->req = eth_req_alloc (gadget->ep0, USB_BUFSIZ, GFP_KERNEL); - if (!dev->req) + status = usb_string_id(cdev); + if (status < 0) goto fail; - dev->req->complete = eth_setup_complete; + strings_dev[STRING_PRODUCT_IDX].id = status; + device_desc.iProduct = status; - /* ... and maybe likewise for status transfer */ -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - if (dev->status_ep) { - dev->stat_req = eth_req_alloc (dev->status_ep, - STATUS_BYTECOUNT, GFP_KERNEL); - if (!dev->stat_req) { - eth_req_free (gadget->ep0, dev->req); + /* register our configuration(s); RNDIS first, if it's used */ + if (has_rndis()) { + status = usb_add_config(cdev, &rndis_config_driver); + if (status < 0) goto fail; - } - dev->stat_req->context = NULL; } -#endif - - /* finish hookup to lower layer ... */ - dev->gadget = gadget; - set_gadget_data (gadget, dev); - gadget->ep0->driver_data = dev; - /* two kinds of host-initiated state changes: - * - iff DATA transfer is active, carrier is "on" - * - tx queueing enabled if open *and* carrier is "on" - */ - netif_stop_queue (dev->net); - netif_carrier_off (dev->net); - - SET_NETDEV_DEV (dev->net, &gadget->dev); - status = register_netdev (dev->net); + status = usb_add_config(cdev, ð_config_driver); if (status < 0) - goto fail1; - - INFO (dev, "%s, version: " DRIVER_VERSION "\n", driver_desc); - INFO (dev, "using %s, OUT %s IN %s%s%s\n", gadget->name, - out_ep->name, in_ep->name, - status_ep ? " STATUS " : "", - status_ep ? status_ep->name : "" - ); - INFO (dev, "MAC %02x:%02x:%02x:%02x:%02x:%02x\n", - net->dev_addr [0], net->dev_addr [1], - net->dev_addr [2], net->dev_addr [3], - net->dev_addr [4], net->dev_addr [5]); - - if (cdc || rndis) - INFO (dev, "HOST MAC %02x:%02x:%02x:%02x:%02x:%02x\n", - dev->host_mac [0], dev->host_mac [1], - dev->host_mac [2], dev->host_mac [3], - dev->host_mac [4], dev->host_mac [5]); - - if (rndis) { - u32 vendorID = 0; - - /* FIXME RNDIS vendor id == "vendor NIC code" == ? */ - - status = rndis_register(rndis_resp_avail, dev); - if (status < 0) { -fail0: - unregister_netdev (dev->net); - goto fail; - } - dev->rndis_config = status; + goto fail; - /* these set up a lot of the OIDs that RNDIS needs */ - rndis_set_host_mac (dev->rndis_config, dev->host_mac); - if (rndis_set_param_dev (dev->rndis_config, dev->net, - &dev->cdc_filter)) - goto fail0; - if (rndis_set_param_vendor(dev->rndis_config, vendorID, - manufacturer)) - goto fail0; - if (rndis_set_param_medium(dev->rndis_config, - NDIS_MEDIUM_802_3, 0)) - goto fail0; - INFO (dev, "RNDIS ready\n"); - } + INFO(cdev, "%s, version: " DRIVER_VERSION "\n", DRIVER_DESC); - return status; + return 0; -fail1: - dev_dbg(&gadget->dev, "register_netdev failed, %d\n", status); fail: - eth_unbind (gadget); + gether_cleanup(); return status; } -/*-------------------------------------------------------------------------*/ - -static void -eth_suspend (struct usb_gadget *gadget) -{ - struct eth_dev *dev = get_gadget_data (gadget); - - DEBUG (dev, "suspend\n"); - dev->suspended = 1; -} - -static void -eth_resume (struct usb_gadget *gadget) +static int __exit eth_unbind(struct usb_composite_dev *cdev) { - struct eth_dev *dev = get_gadget_data (gadget); - - DEBUG (dev, "resume\n"); - dev->suspended = 0; + gether_cleanup(); + return 0; } -/*-------------------------------------------------------------------------*/ - -static struct usb_gadget_driver eth_driver = { - .speed = DEVSPEED, - - .function = (char *) driver_desc, +static struct usb_composite_driver eth_driver = { + .name = "g_ether", + .dev = &device_desc, + .strings = dev_strings, .bind = eth_bind, - .unbind = eth_unbind, - - .setup = eth_setup, - .disconnect = eth_disconnect, - - .suspend = eth_suspend, - .resume = eth_resume, - - .driver = { - .name = (char *) shortname, - .owner = THIS_MODULE, - }, + .unbind = __exit_p(eth_unbind), }; -MODULE_DESCRIPTION (DRIVER_DESC); -MODULE_AUTHOR ("David Brownell, Benedikt Spanger"); -MODULE_LICENSE ("GPL"); +MODULE_DESCRIPTION(PREFIX DRIVER_DESC); +MODULE_AUTHOR("David Brownell, Benedikt Spanger"); +MODULE_LICENSE("GPL"); - -static int __init init (void) +static int __init init(void) { - return usb_gadget_register_driver (ð_driver); + return usb_composite_register(ð_driver); } -module_init (init); +module_init(init); -static void __exit cleanup (void) +static void __exit cleanup(void) { - usb_gadget_unregister_driver (ð_driver); + usb_composite_unregister(ð_driver); } -module_exit (cleanup); - +module_exit(cleanup); |