diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/usb/gadget/ether.c')
| -rw-r--r-- | qemu/roms/u-boot/drivers/usb/gadget/ether.c | 2555 |
1 files changed, 0 insertions, 2555 deletions
diff --git a/qemu/roms/u-boot/drivers/usb/gadget/ether.c b/qemu/roms/u-boot/drivers/usb/gadget/ether.c deleted file mode 100644 index cc6cc1f32..000000000 --- a/qemu/roms/u-boot/drivers/usb/gadget/ether.c +++ /dev/null @@ -1,2555 +0,0 @@ -/* - * ether.c -- Ethernet gadget driver, with CDC and non-CDC options - * - * Copyright (C) 2003-2005,2008 David Brownell - * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger - * Copyright (C) 2008 Nokia Corporation - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/errno.h> -#include <linux/netdevice.h> -#include <linux/usb/ch9.h> -#include <linux/usb/cdc.h> -#include <linux/usb/gadget.h> -#include <net.h> -#include <malloc.h> -#include <linux/ctype.h> - -#include "gadget_chips.h" -#include "rndis.h" - -#define USB_NET_NAME "usb_ether" - -#define atomic_read -extern struct platform_data brd; -#define spin_lock(x) -#define spin_unlock(x) - - -unsigned packet_received, packet_sent; - -#define GFP_ATOMIC ((gfp_t) 0) -#define GFP_KERNEL ((gfp_t) 0) - -/* - * Ethernet gadget driver -- with CDC and non-CDC options - * Builds on hardware support for a full duplex link. - * - * CDC Ethernet is the standard USB solution for sending Ethernet frames - * using USB. Real hardware tends to use the same framing protocol but look - * different for control features. This driver strongly prefers to use - * this USB-IF standard as its open-systems interoperability solution; - * most host side USB stacks (except from Microsoft) support it. - * - * 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 - * operations are available. Linux supports it, but other host operating - * systems may not. (This is a subset of CDC Ethernet.) - * - * It turns out that if you add a few descriptors to that "CDC Subset", - * (Windows) host side drivers from MCCI can treat it as one submode of - * a proprietary scheme called "SAFE" ... without needing to know about - * specific product/vendor IDs. So we do that, making it easier to use - * those MS-Windows drivers. Those added descriptors make it resemble a - * CDC MDLM device, but they don't change device behavior at all. (See - * MCCI Engineering report 950198 "SAFE Networking Functions".) - * - * 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. They borrow more from CDC ACM than CDC ECM. - */ -#define ETH_ALEN 6 /* Octets in one ethernet addr */ -#define ETH_HLEN 14 /* Total octets in header. */ -#define ETH_ZLEN 60 /* Min. octets in frame sans FCS */ -#define ETH_DATA_LEN 1500 /* Max. octets in payload */ -#define ETH_FRAME_LEN PKTSIZE_ALIGN /* Max. octets in frame sans FCS */ -#define ETH_FCS_LEN 4 /* Octets in the FCS */ - -#define DRIVER_DESC "Ethernet Gadget" -/* Based on linux 2.6.27 version */ -#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 */ - -#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) -#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) - -#define USB_CONNECT_TIMEOUT (3 * CONFIG_SYS_HZ) - -/*-------------------------------------------------------------------------*/ - -struct eth_dev { - 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; - - struct usb_request *tx_req, *rx_req; - - struct eth_device *net; - struct net_device_stats stats; - unsigned int tx_qlen; - - unsigned zlp:1; - unsigned cdc:1; - unsigned rndis:1; - unsigned suspended:1; - unsigned network_started:1; - u16 cdc_filter; - unsigned long todo; - int mtu; -#define WORK_RX_MEMORY 0 - int rndis_config; - u8 host_mac[ETH_ALEN]; -}; - -/* - * This version autoconfigures as much as possible at run-time. - * - * It also ASSUMES a self-powered device, without remote wakeup, - * although remote wakeup support would make sense. - */ - -/*-------------------------------------------------------------------------*/ -static struct eth_dev l_ethdev; -static struct eth_device l_netdev; -static struct usb_gadget_driver eth_driver; - -/*-------------------------------------------------------------------------*/ - -/* "main" config is either CDC, or its simple subset */ -static inline int is_cdc(struct eth_dev *dev) -{ -#if !defined(CONFIG_USB_ETH_SUBSET) - return 1; /* only cdc possible */ -#elif !defined(CONFIG_USB_ETH_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 - -#ifdef CONFIG_USB_ETH_QMULT -#define qmult CONFIG_USB_ETH_QMULT -#else -#define qmult 5 -#endif - -/* 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 - -/*-------------------------------------------------------------------------*/ - -/* - * DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! - * Instead: allocate your own, using normal USB-IF procedures. - */ - -/* - * 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 */ - -/* - * 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 - * with pxa250. We're protocol-compatible, if the host-side drivers - * use the endpoint descriptors. bcdDevice (version) is nonzero, so - * drivers that need to hard-wire endpoint numbers have a hook. - * - * The protocol is a minimal subset of CDC Ether, which works on any bulk - * hardware that's not deeply broken ... even on hardware that can't talk - * RNDIS (like SA-1100, with no interrupt endpoint, or anything that - * doesn't handle control-OUT). - */ -#define SIMPLE_VENDOR_NUM 0x049f /* Compaq Computer Corp. */ -#define SIMPLE_PRODUCT_NUM 0x505a /* Linux-USB "CDC Subset" Device */ - -/* - * For hardware that can talk RNDIS and either of the above protocols, - * use this ID ... the windows INF files will know it. Unless it's - * used with CDC Ethernet, Linux 2.4 hosts will need updates to choose - * the non-RNDIS configuration. - */ -#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). - */ - -/* - * Emulating them in eth_bind: - * static ushort idVendor; - * static ushort idProduct; - */ - -#if defined(CONFIG_USBNET_MANUFACTURER) -static char *iManufacturer = CONFIG_USBNET_MANUFACTURER; -#else -static char *iManufacturer = "U-boot"; -#endif - -/* These probably need to be configurable. */ -static ushort bcdDevice; -static char *iProduct; -static char *iSerialNumber; - -static char dev_addr[18]; - -static char host_addr[18]; - - -/*-------------------------------------------------------------------------*/ - -/* - * 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 = { - .bLength = sizeof device_desc, - .bDescriptorType = USB_DT_DEVICE, - - .bcdUSB = __constant_cpu_to_le16(0x0200), - - .bDeviceClass = USB_CLASS_COMM, - .bDeviceSubClass = 0, - .bDeviceProtocol = 0, - - .idVendor = __constant_cpu_to_le16(CDC_VENDOR_NUM), - .idProduct = __constant_cpu_to_le16(CDC_PRODUCT_NUM), - .iManufacturer = STRING_MANUFACTURER, - .iProduct = STRING_PRODUCT, - .bNumConfigurations = 1, -}; - -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 = 1, -}; - -#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 = 1, -}; -#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 CONFIG_USB_ETH_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(CONFIG_USB_ETH_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 CONFIG_USB_ETH_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(CONFIG_USB_ETH_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 CONFIG_USB_ETH_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 CONFIG_USB_ETH_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, - .wMaxPacketSize = __constant_cpu_to_le16(64), -}; - -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, - .wMaxPacketSize = __constant_cpu_to_le16(64), -}; - -static const struct usb_descriptor_header *fs_eth_function[11] = { - (struct usb_descriptor_header *) &otg_descriptor, -#ifdef CONFIG_USB_ETH_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 /* CONFIG_USB_ETH_CDC */ -}; - -static inline void fs_subset_descriptors(void) -{ -#ifdef CONFIG_USB_ETH_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. - */ - -#if defined(CONFIG_USB_ETH_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 /* CONFIG_USB_ETH_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), -}; - -static struct usb_endpoint_descriptor -hs_sink_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = __constant_cpu_to_le16(512), -}; - -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 const struct usb_descriptor_header *hs_eth_function[11] = { - (struct usb_descriptor_header *) &otg_descriptor, -#ifdef CONFIG_USB_ETH_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, - NULL, -#endif /* CONFIG_USB_ETH_CDC */ -}; - -static inline void hs_subset_descriptors(void) -{ -#ifdef CONFIG_USB_ETH_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; -} - -/*-------------------------------------------------------------------------*/ - -/* 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 CONFIG_USB_ETH_CDC - { STRING_CDC, "CDC Ethernet", }, - { STRING_CONTROL, "CDC Communications Control", }, -#endif -#ifdef CONFIG_USB_ETH_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, -}; - -/*============================================================================*/ -DEFINE_CACHE_ALIGN_BUFFER(u8, control_req, USB_BUFSIZ); - -#if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) -DEFINE_CACHE_ALIGN_BUFFER(u8, status_req, STATUS_BYTECOUNT); -#endif - - -/** - * strlcpy - Copy a %NUL terminated string into a sized buffer - * @dest: Where to copy the string to - * @src: Where to copy the string from - * @size: size of destination buffer - * - * Compatible with *BSD: the result is always a valid - * NUL-terminated string that fits in the buffer (unless, - * of course, the buffer size is zero). It does not pad - * out the result like strncpy() does. - */ -size_t strlcpy(char *dest, const char *src, size_t size) -{ - size_t ret = strlen(src); - - if (size) { - size_t len = (ret >= size) ? size - 1 : ret; - memcpy(dest, src, len); - dest[len] = '\0'; - } - return ret; -} - -/*============================================================================*/ - -/* - * one config, two interfaces: control, data. - * complications: class descriptors, and an altsetting. - */ -static int -config_buf(struct usb_gadget *g, u8 *buf, u8 type, unsigned index, int is_otg) -{ - int len; - const struct usb_config_descriptor *config; - const struct usb_descriptor_header **function; - int hs = 0; - - if (gadget_is_dualspeed(g)) { - hs = (g->speed == USB_SPEED_HIGH); - if (type == USB_DT_OTHER_SPEED_CONFIG) - hs = !hs; - } -#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(CONFIG_USB_ETH_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("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("enable %s --> %d\n", - dev->in_ep->name, result); - goto done; - } - - result = usb_ep_enable(dev->out_ep, dev->out); - if (result != 0) { - debug("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; - } else if (!cdc_active(dev)) { - /* - * activate non-CDC configs right away - * this isn't strictly according to the RNDIS spec - */ - eth_start(dev, GFP_ATOMIC); - } - - /* caller is responsible for cleanup on error */ - return result; -} - -static void eth_reset_config(struct eth_dev *dev) -{ - if (dev->config == 0) - return; - - debug("%s\n", __func__); - - 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); - if (dev->tx_req) { - usb_ep_free_request(dev->in_ep, dev->tx_req); - dev->tx_req = NULL; - } - } - if (dev->out) { - usb_ep_disable(dev->out_ep); - if (dev->rx_req) { - usb_ep_free_request(dev->out_ep, dev->rx_req); - dev->rx_req = NULL; - } - } - 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 - && dev->tx_qlen != 0) { - /* tx fifo is full, but we can't clear it...*/ - error("can't change configurations"); - 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; - printf("%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 CONFIG_USB_ETH_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("send SPEED_CHANGE --> %d\n", value); - if (value == 0) - return; - } else if (value != -ECONNRESET) { - debug("event %02x --> %d\n", - event->bNotificationType, value); - if (event->bNotificationType == - USB_CDC_NOTIFY_SPEED_CHANGE) { - l_ethdev.network_started = 1; - printf("USB network up!\n"); - } - } - req->context = NULL; -} - -static void issue_start_status(struct eth_dev *dev) -{ - struct usb_request *req = dev->stat_req; - struct usb_cdc_notification *event; - int value; - - /* - * 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("status buf queue --> %d\n", value); -} - -#endif - -/*-------------------------------------------------------------------------*/ - -static void eth_setup_complete(struct usb_ep *ep, struct usb_request *req) -{ - if (req->status || req->actual != req->length) - debug("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("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 */ - status = rndis_msg_parser(dev->rndis_config, (u8 *) req->buf); - if (status < 0) - error("%s: rndis parse error %d", __func__, status); -} - -#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 - */ -static int -eth_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) -{ - 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. - */ - - debug("%s\n", __func__); - - 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("HNP available\n"); - else if (gadget->a_alt_hnp_support) - debug("HNP needs a different root port\n"); - value = eth_set_config(dev, wValue, GFP_ATOMIC); - break; - case USB_REQ_GET_CONFIGURATION: - if (ctrl->bRequestType != USB_DIR_IN) - break; - *(u8 *)req->buf = dev->config; - value = min(wLength, (u16) 1); - break; - - case USB_REQ_SET_INTERFACE: - if (ctrl->bRequestType != USB_RECIP_INTERFACE - || !dev->config - || wIndex > 1) - break; - if (!cdc_active(dev) && wIndex != 0) - break; - - /* - * 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); - /* - * PXA25x driver use non-CDC ethernet gadget. - * But only _CDC and _RNDIS code can signalize - * that network is working. So we signalize it - * here. - */ - l_ethdev.network_started = 1; - debug("USB network up!\n"); - goto done_set_intf; - } - -#ifdef CONFIG_USB_ETH_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; - if (dev->status) - issue_start_status(dev); - eth_start(dev, GFP_ATOMIC); - } - value = 0; - break; - } -#else - /* - * FIXME this is wrong, as is the assumption that - * all non-PXA hardware talks real CDC ... - */ - debug("set_interface ignored!\n"); -#endif /* CONFIG_USB_ETH_CDC */ - -done_set_intf: - 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; */ - /* carrier always ok ...*/ - *(u8 *)req->buf = 1 ; - } - value = min(wLength, (u16) 1); - break; - -#ifdef CONFIG_USB_ETH_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("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 /* CONFIG_USB_ETH_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: - debug("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) { - debug("respond with data transfer before status phase\n"); - 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("ep_queue --> %d\n", value); - req->status = 0; - eth_setup_complete(gadget->ep0, req); - } - } - - /* host either stalls (value < 0) or reports success */ - return value; -} - -/*-------------------------------------------------------------------------*/ - -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) -{ - 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. - */ - - debug("%s\n", __func__); - if (!req) - return -EINVAL; - - size = (ETHER_HDR_SIZE + dev->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; - - /* - * 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. - */ - - req->buf = (u8 *) NetRxPackets[0]; - req->length = size; - req->complete = rx_complete; - - retval = usb_ep_queue(dev->out_ep, req, gfp_flags); - - if (retval) - error("rx submit --> %d", retval); - - return retval; -} - -static void rx_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct eth_dev *dev = ep->driver_data; - - debug("%s: status %d\n", __func__, req->status); - switch (req->status) { - /* normal completion */ - case 0: - if (rndis_active(dev)) { - /* we know MaxPacketsPerTransfer == 1 here */ - int length = rndis_rm_hdr(req->buf, req->actual); - if (length < 0) - goto length_err; - req->length -= length; - req->actual -= length; - } - if (req->actual < ETH_HLEN || ETH_FRAME_LEN < req->actual) { -length_err: - dev->stats.rx_errors++; - dev->stats.rx_length_errors++; - debug("rx length %d\n", req->length); - break; - } - - dev->stats.rx_packets++; - dev->stats.rx_bytes += req->length; - break; - - /* software-driven interface shutdown */ - case -ECONNRESET: /* unlink */ - case -ESHUTDOWN: /* disconnect etc */ - /* for hardware automagic (such as pxa) */ - case -ECONNABORTED: /* endpoint reset */ - break; - - /* data overrun */ - case -EOVERFLOW: - dev->stats.rx_over_errors++; - /* FALLTHROUGH */ - default: - dev->stats.rx_errors++; - break; - } - - packet_received = 1; -} - -static int alloc_requests(struct eth_dev *dev, unsigned n, gfp_t gfp_flags) -{ - - dev->tx_req = usb_ep_alloc_request(dev->in_ep, 0); - - if (!dev->tx_req) - goto fail1; - - dev->rx_req = usb_ep_alloc_request(dev->out_ep, 0); - - if (!dev->rx_req) - goto fail2; - - return 0; - -fail2: - usb_ep_free_request(dev->in_ep, dev->tx_req); -fail1: - error("can't alloc requests"); - return -1; -} - -static void tx_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct eth_dev *dev = ep->driver_data; - - debug("%s: status %s\n", __func__, (req->status) ? "failed" : "ok"); - switch (req->status) { - default: - dev->stats.tx_errors++; - debug("tx err %d\n", req->status); - /* FALLTHROUGH */ - case -ECONNRESET: /* unlink */ - case -ESHUTDOWN: /* disconnect etc */ - break; - case 0: - dev->stats.tx_bytes += req->length; - } - dev->stats.tx_packets++; - - packet_sent = 1; -} - -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; -} - -#if 0 -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; -} - -/*-------------------------------------------------------------------------*/ -#endif - -static void eth_unbind(struct usb_gadget *gadget) -{ - struct eth_dev *dev = get_gadget_data(gadget); - - debug("%s...\n", __func__); - rndis_deregister(dev->rndis_config); - rndis_exit(); - - /* we've already been disconnected ... no i/o is active */ - if (dev->req) { - usb_ep_free_request(gadget->ep0, dev->req); - dev->req = NULL; - } - if (dev->stat_req) { - usb_ep_free_request(dev->status_ep, dev->stat_req); - dev->stat_req = NULL; - } - - if (dev->tx_req) { - usb_ep_free_request(dev->in_ep, dev->tx_req); - dev->tx_req = NULL; - } - - if (dev->rx_req) { - usb_ep_free_request(dev->out_ep, dev->rx_req); - dev->rx_req = NULL; - } - -/* unregister_netdev (dev->net);*/ -/* free_netdev(dev->net);*/ - - dev->gadget = NULL; - set_gadget_data(gadget, NULL); -} - -static void eth_disconnect(struct usb_gadget *gadget) -{ - eth_reset_config(get_gadget_data(gadget)); - /* FIXME RNDIS should enter RNDIS_UNINITIALIZED */ -} - -static void eth_suspend(struct usb_gadget *gadget) -{ - /* Not used */ -} - -static void eth_resume(struct usb_gadget *gadget) -{ - /* Not used */ -} - -/*-------------------------------------------------------------------------*/ - -#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 void rndis_control_ack_complete(struct usb_ep *ep, - struct usb_request *req) -{ - struct eth_dev *dev = ep->driver_data; - - debug("%s...\n", __func__); - if (req->status || req->actual != req->length) - debug("rndis control ack complete --> %d, %d/%d\n", - req->status, req->actual, req->length); - - if (!l_ethdev.network_started) { - if (rndis_get_state(dev->rndis_config) - == RNDIS_DATA_INITIALIZED) { - l_ethdev.network_started = 1; - printf("USB RNDIS network up!\n"); - } - } - - req->context = NULL; - - if (req != dev->stat_req) - usb_ep_free_request(ep, req); -} - -static char rndis_resp_buf[8] __attribute__((aligned(sizeof(__le32)))); - -static int rndis_control_ack(struct eth_device *net) -{ - struct eth_dev *dev = &l_ethdev; - int length; - struct usb_request *resp = dev->stat_req; - - /* in case RNDIS calls this after disconnect */ - if (!dev->status) { - debug("status ENODEV\n"); - return -ENODEV; - } - - /* in case queue length > 1 */ - if (resp->context) { - resp = usb_ep_alloc_request(dev->status_ep, GFP_ATOMIC); - if (!resp) - return -ENOMEM; - resp->buf = rndis_resp_buf; - } - - /* - * 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 + 4)) = __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); - } - - return 0; -} - -#else - -#define rndis_control_ack NULL - -#endif /* RNDIS */ - -static void eth_start(struct eth_dev *dev, gfp_t gfp_flags) -{ - if (rndis_active(dev)) { - rndis_set_param_medium(dev->rndis_config, - NDIS_MEDIUM_802_3, - BITRATE(dev->gadget)/100); - rndis_signal_connect(dev->rndis_config); - } -} - -static int eth_stop(struct eth_dev *dev) -{ -#ifdef RNDIS_COMPLETE_SIGNAL_DISCONNECT - unsigned long ts; - unsigned long timeout = CONFIG_SYS_HZ; /* 1 sec to stop RNDIS */ -#endif - - if (rndis_active(dev)) { - rndis_set_param_medium(dev->rndis_config, NDIS_MEDIUM_802_3, 0); - rndis_signal_disconnect(dev->rndis_config); - -#ifdef RNDIS_COMPLETE_SIGNAL_DISCONNECT - /* Wait until host receives OID_GEN_MEDIA_CONNECT_STATUS */ - ts = get_timer(0); - while (get_timer(ts) < timeout) - usb_gadget_handle_interrupts(); -#endif - - rndis_uninit(dev->rndis_config); - dev->rndis = 0; - } - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -static int is_eth_addr_valid(char *str) -{ - if (strlen(str) == 17) { - int i; - char *p, *q; - uchar ea[6]; - - /* see if it looks like an ethernet address */ - - p = str; - - for (i = 0; i < 6; i++) { - char term = (i == 5 ? '\0' : ':'); - - ea[i] = simple_strtol(p, &q, 16); - - if ((q - p) != 2 || *q++ != term) - break; - - p = q; - } - - /* Now check the contents. */ - return is_valid_ether_addr(ea); - } - return 0; -} - -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 int get_ether_addr(const char *str, u8 *dev_addr) -{ - if (str) { - unsigned i; - - for (i = 0; i < 6; i++) { - unsigned char num; - - if ((*str == '.') || (*str == ':')) - str++; - num = nibble(*str++) << 4; - num |= (nibble(*str++)); - dev_addr[i] = num; - } - if (is_valid_ether_addr(dev_addr)) - return 0; - } - return 1; -} - -static int eth_bind(struct usb_gadget *gadget) -{ - struct eth_dev *dev = &l_ethdev; - u8 cdc = 1, zlp = 1, rndis = 1; - struct usb_ep *in_ep, *out_ep, *status_ep = NULL; - int status = -ENOMEM; - int gcnum; - u8 tmp[7]; - - /* these flags are only ever cleared; compiler take note */ -#ifndef CONFIG_USB_ETH_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; - } - - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) - 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. - */ - error("controller '%s' not recognized", - gadget->name); - return -ENODEV; - } - - /* - * 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) { -#if defined(CONFIG_USB_RNDIS_VENDOR_ID) && defined(CONFIG_USB_RNDIS_PRODUCT_ID) - device_desc.idVendor = - __constant_cpu_to_le16(CONFIG_USB_RNDIS_VENDOR_ID); - device_desc.idProduct = - __constant_cpu_to_le16(CONFIG_USB_RNDIS_PRODUCT_ID); -#else - device_desc.idVendor = - __constant_cpu_to_le16(RNDIS_VENDOR_NUM); - device_desc.idProduct = - __constant_cpu_to_le16(RNDIS_PRODUCT_NUM); -#endif - sprintf(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.) - */ - } else { -#if defined(CONFIG_USB_CDC_VENDOR_ID) && defined(CONFIG_USB_CDC_PRODUCT_ID) - device_desc.idVendor = cpu_to_le16(CONFIG_USB_CDC_VENDOR_ID); - device_desc.idProduct = cpu_to_le16(CONFIG_USB_CDC_PRODUCT_ID); -#else - if (!cdc) { - device_desc.idVendor = - __constant_cpu_to_le16(SIMPLE_VENDOR_NUM); - device_desc.idProduct = - __constant_cpu_to_le16(SIMPLE_PRODUCT_NUM); - } -#endif - } - /* support optional vendor/distro customization */ - 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: - error("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(CONFIG_USB_ETH_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) { - error("can't run RNDIS on %s", gadget->name); - return -ENODEV; -#ifdef CONFIG_USB_ETH_CDC - } 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(CONFIG_USB_ETH_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 - } - - - /* network device setup */ - dev->net = &l_netdev; - - 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. - */ - get_ether_addr(dev_addr, dev->net->enetaddr); - - memset(tmp, 0, sizeof(tmp)); - memcpy(tmp, dev->net->enetaddr, sizeof(dev->net->enetaddr)); - - get_ether_addr(host_addr, dev->host_mac); - - sprintf(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) { - error("can't init RNDIS, %d", status); - goto fail; - } - } - - /* - * use PKTSIZE (or aligned... from u-boot) and set - * wMaxSegmentSize accordingly - */ - dev->mtu = PKTSIZE_ALIGN; /* RNDIS does not like this, only 1514, TODO*/ - - /* preallocate control message data and buffer */ - dev->req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL); - if (!dev->req) - goto fail; - dev->req->buf = control_req; - dev->req->complete = eth_setup_complete; - - /* ... and maybe likewise for status transfer */ -#if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) - if (dev->status_ep) { - dev->stat_req = usb_ep_alloc_request(dev->status_ep, - GFP_KERNEL); - if (!dev->stat_req) { - usb_ep_free_request(dev->status_ep, dev->req); - - goto fail; - } - dev->stat_req->buf = status_req; - 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" - */ - - printf("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 : "" - ); - printf("MAC %02x:%02x:%02x:%02x:%02x:%02x\n", - dev->net->enetaddr[0], dev->net->enetaddr[1], - dev->net->enetaddr[2], dev->net->enetaddr[3], - dev->net->enetaddr[4], dev->net->enetaddr[5]); - - if (cdc || rndis) - printf("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" == ? */ - - dev->rndis_config = rndis_register(rndis_control_ack); - if (dev->rndis_config < 0) { -fail0: - eth_unbind(gadget); - debug("RNDIS setup failed\n"); - status = -ENODEV; - 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->mtu, - &dev->stats, &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; - printf("RNDIS ready\n"); - } - return 0; - -fail: - error("%s failed, status = %d", __func__, status); - eth_unbind(gadget); - return status; -} - -/*-------------------------------------------------------------------------*/ - -static int usb_eth_init(struct eth_device *netdev, bd_t *bd) -{ - struct eth_dev *dev = &l_ethdev; - struct usb_gadget *gadget; - unsigned long ts; - unsigned long timeout = USB_CONNECT_TIMEOUT; - - if (!netdev) { - error("received NULL ptr"); - goto fail; - } - - /* Configure default mac-addresses for the USB ethernet device */ -#ifdef CONFIG_USBNET_DEV_ADDR - strlcpy(dev_addr, CONFIG_USBNET_DEV_ADDR, sizeof(dev_addr)); -#endif -#ifdef CONFIG_USBNET_HOST_ADDR - strlcpy(host_addr, CONFIG_USBNET_HOST_ADDR, sizeof(host_addr)); -#endif - /* Check if the user overruled the MAC addresses */ - if (getenv("usbnet_devaddr")) - strlcpy(dev_addr, getenv("usbnet_devaddr"), - sizeof(dev_addr)); - - if (getenv("usbnet_hostaddr")) - strlcpy(host_addr, getenv("usbnet_hostaddr"), - sizeof(host_addr)); - - if (!is_eth_addr_valid(dev_addr)) { - error("Need valid 'usbnet_devaddr' to be set"); - goto fail; - } - if (!is_eth_addr_valid(host_addr)) { - error("Need valid 'usbnet_hostaddr' to be set"); - goto fail; - } - - if (usb_gadget_register_driver(ð_driver) < 0) - goto fail; - - dev->network_started = 0; - - packet_received = 0; - packet_sent = 0; - - gadget = dev->gadget; - usb_gadget_connect(gadget); - - if (getenv("cdc_connect_timeout")) - timeout = simple_strtoul(getenv("cdc_connect_timeout"), - NULL, 10) * CONFIG_SYS_HZ; - ts = get_timer(0); - while (!l_ethdev.network_started) { - /* Handle control-c and timeouts */ - if (ctrlc() || (get_timer(ts) > timeout)) { - error("The remote end did not respond in time."); - goto fail; - } - usb_gadget_handle_interrupts(); - } - - packet_received = 0; - rx_submit(dev, dev->rx_req, 0); - return 0; -fail: - return -1; -} - -static int usb_eth_send(struct eth_device *netdev, void *packet, int length) -{ - int retval; - void *rndis_pkt = NULL; - struct eth_dev *dev = &l_ethdev; - struct usb_request *req = dev->tx_req; - unsigned long ts; - unsigned long timeout = USB_CONNECT_TIMEOUT; - - debug("%s:...\n", __func__); - - /* new buffer is needed to include RNDIS header */ - if (rndis_active(dev)) { - rndis_pkt = malloc(length + - sizeof(struct rndis_packet_msg_type)); - if (!rndis_pkt) { - error("No memory to alloc RNDIS packet"); - goto drop; - } - rndis_add_hdr(rndis_pkt, length); - memcpy(rndis_pkt + sizeof(struct rndis_packet_msg_type), - packet, length); - packet = rndis_pkt; - length += sizeof(struct rndis_packet_msg_type); - } - req->buf = packet; - req->context = NULL; - 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; -#if 0 - /* throttle highspeed IRQ rate back slightly */ - if (gadget_is_dualspeed(dev->gadget)) - req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH) - ? ((dev->tx_qlen % qmult) != 0) : 0; -#endif - dev->tx_qlen = 1; - ts = get_timer(0); - packet_sent = 0; - - retval = usb_ep_queue(dev->in_ep, req, GFP_ATOMIC); - - if (!retval) - debug("%s: packet queued\n", __func__); - while (!packet_sent) { - if (get_timer(ts) > timeout) { - printf("timeout sending packets to usb ethernet\n"); - return -1; - } - usb_gadget_handle_interrupts(); - } - if (rndis_pkt) - free(rndis_pkt); - - return 0; -drop: - dev->stats.tx_dropped++; - return -ENOMEM; -} - -static int usb_eth_recv(struct eth_device *netdev) -{ - struct eth_dev *dev = &l_ethdev; - - usb_gadget_handle_interrupts(); - - if (packet_received) { - debug("%s: packet received\n", __func__); - if (dev->rx_req) { - NetReceive(NetRxPackets[0], dev->rx_req->length); - packet_received = 0; - - rx_submit(dev, dev->rx_req, 0); - } else - error("dev->rx_req invalid"); - } - return 0; -} - -void usb_eth_halt(struct eth_device *netdev) -{ - struct eth_dev *dev = &l_ethdev; - - if (!netdev) { - error("received NULL ptr"); - return; - } - - /* If the gadget not registered, simple return */ - if (!dev->gadget) - return; - - /* - * Some USB controllers may need additional deinitialization here - * before dropping pull-up (also due to hardware issues). - * For example: unhandled interrupt with status stage started may - * bring the controller to fully broken state (until board reset). - * There are some variants to debug and fix such cases: - * 1) In the case of RNDIS connection eth_stop can perform additional - * interrupt handling. See RNDIS_COMPLETE_SIGNAL_DISCONNECT definition. - * 2) 'pullup' callback in your UDC driver can be improved to perform - * this deinitialization. - */ - eth_stop(dev); - - usb_gadget_disconnect(dev->gadget); - - /* Clear pending interrupt */ - if (dev->network_started) { - usb_gadget_handle_interrupts(); - dev->network_started = 0; - } - - usb_gadget_unregister_driver(ð_driver); -} - -static struct usb_gadget_driver eth_driver = { - .speed = DEVSPEED, - - .bind = eth_bind, - .unbind = eth_unbind, - - .setup = eth_setup, - .disconnect = eth_disconnect, - - .suspend = eth_suspend, - .resume = eth_resume, -}; - -int usb_eth_initialize(bd_t *bi) -{ - struct eth_device *netdev = &l_netdev; - - strlcpy(netdev->name, USB_NET_NAME, sizeof(netdev->name)); - - netdev->init = usb_eth_init; - netdev->send = usb_eth_send; - netdev->recv = usb_eth_recv; - netdev->halt = usb_eth_halt; - -#ifdef CONFIG_MCAST_TFTP - #error not supported -#endif - eth_register(netdev); - return 0; -} |