litmus-rt.git - The LITMUS^RT kernel.

	Commit message (Expand)	Author	Age
*	ZORRO: Replace deprecated __initcall with equivalent device_initcall.	Robert P. J. Day	2008-07-20
*	m68k: remove CVS keywords	Adrian Bunk	2008-07-20
*	zorro: use non-racy method for proc entries creation	Denis V. Lunev	2008-04-29
*	proc: switch /proc/bus/zorro/devices to seq_file interface	Alexey Dobriyan	2008-04-29
*	proc: remove proc_bus	Alexey Dobriyan	2008-04-29
*	Amiga Zorro bus: kill resource_size_t warnings	Geert Uytterhoeven	2007-05-04
*	[PATCH] mark struct file_operations const 6	Arjan van de Ven	2007-02-12
*	[PATCH] struct path: convert zorro	Josef Sipek	2006-12-08
*	[PATCH] m68k: zorro __user annotations	Al Viro	2006-01-12
*	Linux-2.6.12-rc2v2.6.12-rc2	Linus Torvalds	2005-04-16

/* * USB Networking Links * Copyright (C) 2000-2005 by David Brownell <dbrownell@users.sourceforge.net> * Copyright (C) 2002 Pavel Machek <pavel@ucw.cz> * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com> * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net> * Copyright (c) 2002-2003 TiVo Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* * This is a generic "USB networking" framework that works with several * kinds of full and high speed networking devices: * * + USB host-to-host "network cables", used for IP-over-USB links. * These are often used for Laplink style connectivity products. * - AnchorChip 2720 * - Belkin, eTEK (interops with Win32 drivers) * - GeneSys GL620USB-A * - NetChip 1080 (interoperates with NetChip Win32 drivers) * - Prolific PL-2301/2302 (replaces "plusb" driver) * - KC Technology KC2190 * * + Smart USB devices can support such links directly, using Internet * standard protocols instead of proprietary host-to-device links. * - Linux PDAs like iPaq, Yopy, and Zaurus * - The BLOB boot loader (for diskless booting) * - Linux "gadgets", perhaps using PXA-2xx or Net2280 controllers * - Devices using EPSON's sample USB firmware * - CDC-Ethernet class devices, such as many cable modems * * + Adapters to networks such as Ethernet. * - AX8817X based USB 2.0 products * * Links to these devices can be bridged using Linux Ethernet bridging. * With minor exceptions, these all use similar USB framing for network * traffic, but need different protocols for control traffic. * * USB devices can implement their side of this protocol at the cost * of two bulk endpoints; it's not restricted to "cable" applications. * See the SA1110, Zaurus, or EPSON device/client support in this driver; * slave/target drivers such as "usb-eth" (on most SA-1100 PDAs) or * "g_ether" (in the Linux "gadget" framework) implement that behavior * within devices. * * * CHANGELOG: * * 13-sep-2000 experimental, new * 10-oct-2000 usb_device_id table created. * 28-oct-2000 misc fixes; mostly, discard more TTL-mangled rx packets. * 01-nov-2000 usb_device_id table and probing api update by * Adam J. Richter <adam@yggdrasil.com>. * 18-dec-2000 (db) tx watchdog, "net1080" renaming to "usbnet", device_info * and prolific support, isolate net1080-specific bits, cleanup. * fix unlink_urbs oops in D3 PM resume code path. * * 02-feb-2001 (db) fix tx skb sharing, packet length, match_flags, ... * 08-feb-2001 stubbed in "linuxdev", maybe the SA-1100 folk can use it; * AnchorChips 2720 support (from spec) for testing; * fix bit-ordering problem with ethernet multicast addr * 19-feb-2001 Support for clearing halt conditions. SA1100 UDC support * updates. Oleg Drokin (green@iXcelerator.com) * 25-mar-2001 More SA-1100 updates, including workaround for ip problem * expecting cleared skb->cb and framing change to match latest * handhelds.org version (Oleg). Enable device IDs from the * Win32 Belkin driver; other cleanups (db). * 16-jul-2001 Bugfixes for uhci oops-on-unplug, Belkin support, various * cleanups for problems not yet seen in the field. (db) * 17-oct-2001 Handle "Advance USBNET" product, like Belkin/eTEK devices, * from Ioannis Mavroukakis <i.mavroukakis@btinternet.com>; * rx unlinks somehow weren't async; minor cleanup. * 03-nov-2001 Merged GeneSys driver; original code from Jiun-Jie Huang * <huangjj@genesyslogic.com.tw>, updated by Stanislav Brabec * <utx@penguin.cz>. Made framing options (NetChip/GeneSys) * tie mostly to (sub)driver info. Workaround some PL-2302 * chips that seem to reject SET_INTERFACE requests. * * 06-apr-2002 Added ethtool support, based on a patch from Brad Hards. * Level of diagnostics is more configurable; they use device * location (usb_device->devpath) instead of address (2.5). * For tx_fixup, memflags can't be NOIO. * 07-may-2002 Generalize/cleanup keventd support, handling rx stalls (mostly * for USB 2.0 TTs) and memory shortages (potential) too. (db) * Use "locally assigned" IEEE802 address space. (Brad Hards) * 18-oct-2002 Support for Zaurus (Pavel Machek), related cleanup (db). * 14-dec-2002 Remove Zaurus-private crc32 code (Pavel); 2.5 oops fix, * cleanups and stubbed PXA-250 support (db), fix for framing * issues on Z, net1080, and gl620a (Toby Milne) * * 31-mar-2003 Use endpoint descriptors: high speed support, simpler sa1100 * vs pxa25x, and CDC Ethernet. Throttle down log floods on * disconnect; other cleanups. (db) Flush net1080 fifos * after several sequential framing errors. (Johannes Erdfelt) * 22-aug-2003 AX8817X support (Dave Hollis). * 14-jun-2004 Trivial patch for AX8817X based Buffalo LUA-U2-KTX in Japan * (Neil Bortnak) * 03-nov-2004 Trivial patch for KC2190 (KC-190) chip. (Jonathan McDowell) * * 01-feb-2005 AX88772 support (Phil Chang & Dave Hollis) *-------------------------------------------------------------------------*/ // #define DEBUG // error path messages, extra info // #define VERBOSE // more; success messages #include <linux/config.h> #ifdef CONFIG_USB_DEBUG # define DEBUG #endif #include <linux/module.h> #include <linux/kmod.h> #include <linux/sched.h> #include <linux/init.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/random.h> #include <linux/ethtool.h> #include <linux/workqueue.h> #include <linux/mii.h> #include <asm/uaccess.h> #include <asm/unaligned.h> #include <linux/usb.h> #include <asm/io.h> #include <asm/scatterlist.h> #include <linux/mm.h> #include <linux/dma-mapping.h> #define DRIVER_VERSION "03-Nov-2004" /*-------------------------------------------------------------------------*/ /* * Nineteen USB 1.1 max size bulk transactions per frame (ms), max. * Several dozen bytes of IPv4 data can fit in two such transactions. * One maximum size Ethernet packet takes twenty four of them. * For high speed, each frame comfortably fits almost 36 max size * Ethernet packets (so queues should be bigger). */ #define RX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4) #define TX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4) // packets are always ethernet inside // ... except they can be bigger (limit of 64K with NetChip framing) #define MIN_PACKET sizeof(struct ethhdr) #define MAX_PACKET 32768 // reawaken network queue this soon after stopping; else watchdog barks #define TX_TIMEOUT_JIFFIES (5*HZ) // throttle rx/tx briefly after some faults, so khubd might disconnect() // us (it polls at HZ/4 usually) before we report too many false errors. #define THROTTLE_JIFFIES (HZ/8) // for vendor-specific control operations #define CONTROL_TIMEOUT_MS 500 // between wakeups #define UNLINK_TIMEOUT_MS 3 /*-------------------------------------------------------------------------*/ // randomly generated ethernet address static u8 node_id [ETH_ALEN]; // state we keep for each device we handle struct usbnet { // housekeeping struct usb_device *udev; struct driver_info *driver_info; wait_queue_head_t *wait; // i/o info: pipes etc unsigned in, out; struct usb_host_endpoint *status; unsigned maxpacket; struct timer_list delay; // protocol/interface state struct net_device *net; struct net_device_stats stats; int msg_enable; unsigned long data [5]; struct mii_if_info mii; // various kinds of pending driver work struct sk_buff_head rxq; struct sk_buff_head txq; struct sk_buff_head done; struct urb *interrupt; struct tasklet_struct bh; struct work_struct kevent; unsigned long flags; # define EVENT_TX_HALT 0 # define EVENT_RX_HALT 1 # define EVENT_RX_MEMORY 2 # define EVENT_STS_SPLIT 3 # define EVENT_LINK_RESET 4 }; // device-specific info used by the driver struct driver_info { char *description; int flags; /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */ #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */ #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */ #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */ #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */ #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */ #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */ #define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */ /* init device ... can sleep, or cause probe() failure */ int (*bind)(struct usbnet *, struct usb_interface *); /* cleanup device ... can sleep, but can't fail */ void (*unbind)(struct usbnet *, struct usb_interface *); /* reset device ... can sleep */ int (*reset)(struct usbnet *); /* see if peer is connected ... can sleep */ int (*check_connect)(struct usbnet *); /* for status polling */ void (*status)(struct usbnet *, struct urb *); /* link reset handling, called from defer_kevent */ int (*link_reset)(struct usbnet *); /* fixup rx packet (strip framing) */ int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb); /* fixup tx packet (add framing) */ struct sk_buff *(*tx_fixup)(struct usbnet *dev, struct sk_buff *skb, int flags); // FIXME -- also an interrupt mechanism // useful for at least PL2301/2302 and GL620USB-A // and CDC use them to report 'is it connected' changes /* for new devices, use the descriptor-reading code instead */ int in; /* rx endpoint */ int out; /* tx endpoint */ unsigned long data; /* Misc driver specific data */ }; // we record the state for each of our queued skbs enum skb_state { illegal = 0, tx_start, tx_done, rx_start, rx_done, rx_cleanup }; struct skb_data { // skb->cb is one of these struct urb *urb; struct usbnet *dev; enum skb_state state; size_t length; }; static const char driver_name [] = "usbnet"; /* use ethtool to change the level for any given device */ static int msg_level = -1; module_param (msg_level, int, 0); MODULE_PARM_DESC (msg_level, "Override default message level"); #ifdef DEBUG #define devdbg(usbnet, fmt, arg...) \ printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg) #else #define devdbg(usbnet, fmt, arg...) do {} while(0) #endif #define deverr(usbnet, fmt, arg...) \ printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg) #define devwarn(usbnet, fmt, arg...) \ printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg) #define devinfo(usbnet, fmt, arg...) \ printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \ /*-------------------------------------------------------------------------*/ static void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *); static u32 usbnet_get_link (struct net_device *); static u32 usbnet_get_msglevel (struct net_device *); static void usbnet_set_msglevel (struct net_device *, u32); static void defer_kevent (struct usbnet *, int); /* mostly for PDA style devices, which are always connected if present */ static int always_connected (struct usbnet *dev) { return 0; } /* handles CDC Ethernet and many other network "bulk data" interfaces */ static int get_endpoints (struct usbnet *dev, struct usb_interface *intf) { int tmp; struct usb_host_interface *alt = NULL; struct usb_host_endpoint *in = NULL, *out = NULL; struct usb_host_endpoint *status = NULL; for (tmp = 0; tmp < intf->num_altsetting; tmp++) { unsigned ep; in = out = status = NULL; alt = intf->altsetting + tmp; /* take the first altsetting with in-bulk + out-bulk; * remember any status endpoint, just in case; * ignore other endpoints and altsetttings. */ for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { struct usb_host_endpoint *e; int intr = 0; e = alt->endpoint + ep; switch (e->desc.bmAttributes) { case USB_ENDPOINT_XFER_INT: if (!(e->desc.bEndpointAddress & USB_DIR_IN)) continue; intr = 1; /* FALLTHROUGH */ case USB_ENDPOINT_XFER_BULK: break; default: continue; } if (e->desc.bEndpointAddress & USB_DIR_IN) { if (!intr && !in) in = e; else if (intr && !status) status = e; } else { if (!out) out = e; } } if (in && out) break; } if (!alt || !in || !out) return -EINVAL; if (alt->desc.bAlternateSetting != 0 || !(dev->driver_info->flags & FLAG_NO_SETINT)) { tmp = usb_set_interface (dev->udev, alt->desc.bInterfaceNumber, alt->desc.bAlternateSetting); if (tmp < 0) return tmp; } dev->in = usb_rcvbulkpipe (dev->udev, in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); dev->out = usb_sndbulkpipe (dev->udev, out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); dev->status = status; return 0; } static void intr_complete (struct urb *urb, struct pt_regs *regs); static int init_status (struct usbnet *dev, struct usb_interface *intf) { char *buf = NULL; unsigned pipe = 0; unsigned maxp; unsigned period; if (!dev->driver_info->status) return 0; pipe = usb_rcvintpipe (dev->udev, dev->status->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); maxp = usb_maxpacket (dev->udev, pipe, 0); /* avoid 1 msec chatter: min 8 msec poll rate */ period = max ((int) dev->status->desc.bInterval, (dev->udev->speed == USB_SPEED_HIGH) ? 7 : 3); buf = kmalloc (maxp, SLAB_KERNEL); if (buf) { dev->interrupt = usb_alloc_urb (0, SLAB_KERNEL); if (!dev->interrupt) { kfree (buf); return -ENOMEM; } else { usb_fill_int_urb(dev->interrupt, dev->udev, pipe, buf, maxp, intr_complete, dev, period); dev_dbg(&intf->dev, "status ep%din, %d bytes period %d\n", usb_pipeendpoint(pipe), maxp, period); } } return 0; } static void skb_return (struct usbnet *dev, struct sk_buff *skb) { int status; skb->dev = dev->net; skb->protocol = eth_type_trans (skb, dev->net); dev->stats.rx_packets++; dev->stats.rx_bytes += skb->len; if (netif_msg_rx_status (dev)) devdbg (dev, "< rx, len %zu, type 0x%x", skb->len + sizeof (struct ethhdr), skb->protocol); memset (skb->cb, 0, sizeof (struct skb_data)); status = netif_rx (skb); if (status != NET_RX_SUCCESS && netif_msg_rx_err (dev)) devdbg (dev, "netif_rx status %d", status); } #ifdef CONFIG_USB_ALI_M5632 #define HAVE_HARDWARE /*------------------------------------------------------------------------- * * ALi M5632 driver ... does high speed * *-------------------------------------------------------------------------*/ static const struct driver_info ali_m5632_info = { .description = "ALi M5632", }; #endif #ifdef CONFIG_USB_AN2720 #define HAVE_HARDWARE /*------------------------------------------------------------------------- * * AnchorChips 2720 driver ... http://www.cypress.com * * This doesn't seem to have a way to detect whether the peer is * connected, or need any reset handshaking. It's got pretty big * internal buffers (handles most of a frame's worth of data). * Chip data sheets don't describe any vendor control messages. * *-------------------------------------------------------------------------*/ static const struct driver_info an2720_info = { .description = "AnchorChips/Cypress 2720", // no reset available! // no check_connect available! .in = 2, .out = 2, // direction distinguishes these }; #endif /* CONFIG_USB_AN2720 */ #ifdef CONFIG_USB_AX8817X /* ASIX AX8817X based USB 2.0 Ethernet Devices */ #define HAVE_HARDWARE #define NEED_MII #include <linux/crc32.h> #define AX_CMD_SET_SW_MII 0x06 #define AX_CMD_READ_MII_REG 0x07 #define AX_CMD_WRITE_MII_REG 0x08 #define AX_CMD_SET_HW_MII 0x0a #define AX_CMD_READ_EEPROM 0x0b #define AX_CMD_WRITE_EEPROM 0x0c #define AX_CMD_WRITE_ENABLE 0x0d #define AX_CMD_WRITE_DISABLE 0x0e #define AX_CMD_WRITE_RX_CTL 0x10 #define AX_CMD_READ_IPG012 0x11 #define AX_CMD_WRITE_IPG0 0x12 #define AX_CMD_WRITE_IPG1 0x13 #define AX_CMD_WRITE_IPG2 0x14 #define AX_CMD_WRITE_MULTI_FILTER 0x16 #define AX_CMD_READ_NODE_ID 0x17 #define AX_CMD_READ_PHY_ID 0x19 #define AX_CMD_READ_MEDIUM_STATUS 0x1a #define AX_CMD_WRITE_MEDIUM_MODE 0x1b #define AX_CMD_READ_MONITOR_MODE 0x1c #define AX_CMD_WRITE_MONITOR_MODE 0x1d #define AX_CMD_WRITE_GPIOS 0x1f #define AX_CMD_SW_RESET 0x20 #define AX_CMD_SW_PHY_STATUS 0x21 #define AX_CMD_SW_PHY_SELECT 0x22 #define AX88772_CMD_READ_NODE_ID 0x13 #define AX_MONITOR_MODE 0x01 #define AX_MONITOR_LINK 0x02 #define AX_MONITOR_MAGIC 0x04 #define AX_MONITOR_HSFS 0x10 /* AX88172 Medium Status Register values */ #define AX_MEDIUM_FULL_DUPLEX 0x02 #define AX_MEDIUM_TX_ABORT_ALLOW 0x04 #define AX_MEDIUM_FLOW_CONTROL_EN 0x10 #define AX_MCAST_FILTER_SIZE 8 #define AX_MAX_MCAST 64 #define AX_EEPROM_LEN 0x40 #define AX_SWRESET_CLEAR 0x00 #define AX_SWRESET_RR 0x01 #define AX_SWRESET_RT 0x02 #define AX_SWRESET_PRTE 0x04 #define AX_SWRESET_PRL 0x08 #define AX_SWRESET_BZ 0x10 #define AX_SWRESET_IPRL 0x20 #define AX_SWRESET_IPPD 0x40 #define AX88772_IPG0_DEFAULT 0x15 #define AX88772_IPG1_DEFAULT 0x0c #define AX88772_IPG2_DEFAULT 0x12 #define AX88772_MEDIUM_FULL_DUPLEX 0x0002 #define AX88772_MEDIUM_RESERVED 0x0004 #define AX88772_MEDIUM_RX_FC_ENABLE 0x0010 #define AX88772_MEDIUM_TX_FC_ENABLE 0x0020 #define AX88772_MEDIUM_PAUSE_FORMAT 0x0080 #define AX88772_MEDIUM_RX_ENABLE 0x0100 #define AX88772_MEDIUM_100MB 0x0200 #define AX88772_MEDIUM_DEFAULT \ (AX88772_MEDIUM_FULL_DUPLEX | AX88772_MEDIUM_RX_FC_ENABLE | \ AX88772_MEDIUM_TX_FC_ENABLE | AX88772_MEDIUM_100MB | \ AX88772_MEDIUM_RESERVED | AX88772_MEDIUM_RX_ENABLE ) #define AX_EEPROM_MAGIC 0xdeadbeef /* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */ struct ax8817x_data { u8 multi_filter[AX_MCAST_FILTER_SIZE]; }; struct ax88172_int_data { u16 res1; u8 link; u16 res2; u8 status; u16 res3; } __attribute__ ((packed)); static int ax8817x_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 size, void *data) { return usb_control_msg( dev->udev, usb_rcvctrlpipe(dev->udev, 0), cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, data, size, CONTROL_TIMEOUT_MS); } static int ax8817x_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 size, void *data) { return usb_control_msg( dev->udev, usb_sndctrlpipe(dev->udev, 0), cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, data, size, CONTROL_TIMEOUT_MS); } static void ax8817x_async_cmd_callback(struct urb *urb, struct pt_regs *regs) { struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; if (urb->status < 0) printk(KERN_DEBUG "ax8817x_async_cmd_callback() failed with %d", urb->status); kfree(req); usb_free_urb(urb); } static void ax8817x_status(struct usbnet *dev, struct urb *urb) { struct ax88172_int_data *event; int link; if (urb->actual_length < 8) return; event = urb->transfer_buffer; link = event->link & 0x01; if (netif_carrier_ok(dev->net) != link) { if (link) { netif_carrier_on(dev->net); defer_kevent (dev, EVENT_LINK_RESET ); } else netif_carrier_off(dev->net); devdbg(dev, "ax8817x - Link Status is: %d", link); } } static void ax8817x_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index, u16 size, void *data) { struct usb_ctrlrequest *req; int status; struct urb *urb; if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) { devdbg(dev, "Error allocating URB in write_cmd_async!"); return; } if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) { deverr(dev, "Failed to allocate memory for control request"); usb_free_urb(urb); return; } req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE; req->bRequest = cmd; req->wValue = cpu_to_le16(value); req->wIndex = cpu_to_le16(index); req->wLength = cpu_to_le16(size); usb_fill_control_urb(urb, dev->udev, usb_sndctrlpipe(dev->udev, 0), (void *)req, data, size, ax8817x_async_cmd_callback, req); if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { deverr(dev, "Error submitting the control message: status=%d", status); kfree(req); usb_free_urb(urb); } } static void ax8817x_set_multicast(struct net_device *net) { struct usbnet *dev = netdev_priv(net); struct ax8817x_data *data = (struct ax8817x_data *)&dev->data; u8 rx_ctl = 0x8c; if (net->flags & IFF_PROMISC) { rx_ctl |= 0x01; } else if (net->flags & IFF_ALLMULTI || net->mc_count > AX_MAX_MCAST) { rx_ctl |= 0x02; } else if (net->mc_count == 0) { /* just broadcast and directed */ } else { /* We use the 20 byte dev->data * for our 8 byte filter buffer * to avoid allocating memory that * is tricky to free later */ struct dev_mc_list *mc_list = net->mc_list; u32 crc_bits; int i; memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE); /* Build the multicast hash filter. */ for (i = 0; i < net->mc_count; i++) { crc_bits = ether_crc(ETH_ALEN, mc_list->dmi_addr) >> 26; data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7); mc_list = mc_list->next; } ax8817x_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0, AX_MCAST_FILTER_SIZE, data->multi_filter); rx_ctl |= 0x10; } ax8817x_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL); } static int ax8817x_mdio_read(struct net_device *netdev, int phy_id, int loc) { struct usbnet *dev = netdev_priv(netdev); u16 res; u8 buf[1]; ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf); ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res); ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf); return res & 0xffff; } static void ax8817x_mdio_write(struct net_device *netdev, int phy_id, int loc, int val) { struct usbnet *dev = netdev_priv(netdev); u16 res = val; u8 buf[1]; ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf); ax8817x_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res); ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf); } static int ax88172_link_reset(struct usbnet *dev) { u16 lpa; u8 mode; mode = AX_MEDIUM_TX_ABORT_ALLOW | AX_MEDIUM_FLOW_CONTROL_EN; lpa = ax8817x_mdio_read(dev->net, dev->mii.phy_id, MII_LPA); if (lpa & LPA_DUPLEX) mode |= AX_MEDIUM_FULL_DUPLEX; ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL); return 0; } static void ax8817x_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) { struct usbnet *dev = netdev_priv(net); u8 opt; if (ax8817x_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) { wolinfo->supported = 0; wolinfo->wolopts = 0; return; } wolinfo->supported = WAKE_PHY | WAKE_MAGIC; wolinfo->wolopts = 0; if (opt & AX_MONITOR_MODE) { if (opt & AX_MONITOR_LINK) wolinfo->wolopts |= WAKE_PHY; if (opt & AX_MONITOR_MAGIC) wolinfo->wolopts |= WAKE_MAGIC; } } static int ax8817x_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) { struct usbnet *dev = netdev_priv(net); u8 opt = 0; u8 buf[1]; if (wolinfo->wolopts & WAKE_PHY) opt |= AX_MONITOR_LINK; if (wolinfo->wolopts & WAKE_MAGIC) opt |= AX_MONITOR_MAGIC; if (opt != 0) opt |= AX_MONITOR_MODE; if (ax8817x_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE, opt, 0, 0, &buf) < 0) return -EINVAL; return 0; } static int ax8817x_get_eeprom_len(struct net_device *net) { return AX_EEPROM_LEN; } static int ax8817x_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, u8 *data) { struct usbnet *dev = netdev_priv(net); u16 *ebuf = (u16 *)data; int i; /* Crude hack to ensure that we don't overwrite memory * if an odd length is supplied */ if (eeprom->len % 2) return -EINVAL; eeprom->magic = AX_EEPROM_MAGIC; /* ax8817x returns 2 bytes from eeprom on read */ for (i=0; i < eeprom->len / 2; i++) { if (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM, eeprom->offset + i, 0, 2, &ebuf[i]) < 0) return -EINVAL; } return 0; } static void ax8817x_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info) { /* Inherit standard device info */ usbnet_get_drvinfo(net, info); info->eedump_len = 0x3e; } static int ax8817x_get_settings(struct net_device *net, struct ethtool_cmd *cmd) { struct usbnet *dev = netdev_priv(net); return mii_ethtool_gset(&dev->mii,cmd); } static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd) { struct usbnet *dev = netdev_priv(net); return mii_ethtool_sset(&dev->mii,cmd); } /* We need to override some ethtool_ops so we require our own structure so we don't interfere with other usbnet devices that may be connected at the same time. */ static struct ethtool_ops ax8817x_ethtool_ops = { .get_drvinfo = ax8817x_get_drvinfo, .get_link = ethtool_op_get_link, .get_msglevel = usbnet_get_msglevel, .set_msglevel = usbnet_set_msglevel, .get_wol = ax8817x_get_wol, .set_wol = ax8817x_set_wol, .get_eeprom_len = ax8817x_get_eeprom_len, .get_eeprom = ax8817x_get_eeprom, .get_settings = ax8817x_get_settings, .set_settings = ax8817x_set_settings, }; static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf) { int ret = 0; void *buf; int i; unsigned long gpio_bits = dev->driver_info->data; get_endpoints(dev,intf); buf = kmalloc(ETH_ALEN, GFP_KERNEL); if(!buf) { ret = -ENOMEM; goto out1; } /* Toggle the GPIOs in a manufacturer/model specific way */ for (i = 2; i >= 0; i--) { if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS, (gpio_bits >> (i * 8)) & 0xff, 0, 0, buf)) < 0) goto out2; msleep(5); } if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x80, 0, 0, buf)) < 0) { dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret); goto out2; } /* Get the MAC address */ memset(buf, 0, ETH_ALEN); if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, 6, buf)) < 0) { dbg("read AX_CMD_READ_NODE_ID failed: %d", ret); goto out2; } memcpy(dev->net->dev_addr, buf, ETH_ALEN); /* Get the PHY id */ if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) { dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret); goto out2; } else if (ret < 2) { /* this should always return 2 bytes */ dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", ret); ret = -EIO; goto out2; } /* Initialize MII structure */ dev->mii.dev = dev->net; dev->mii.mdio_read = ax8817x_mdio_read; dev->mii.mdio_write = ax8817x_mdio_write; dev->mii.phy_id_mask = 0x3f; dev->mii.reg_num_mask = 0x1f; dev->mii.phy_id = *((u8 *)buf + 1); dev->net->set_multicast_list = ax8817x_set_multicast; dev->net->ethtool_ops = &ax8817x_ethtool_ops; ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP); mii_nway_restart(&dev->mii); return 0; out2: kfree(buf); out1: return ret; } static struct ethtool_ops ax88772_ethtool_ops = { .get_drvinfo = ax8817x_get_drvinfo, .get_link = ethtool_op_get_link, .get_msglevel = usbnet_get_msglevel, .set_msglevel = usbnet_set_msglevel, .get_wol = ax8817x_get_wol, .set_wol = ax8817x_set_wol, .get_eeprom_len = ax8817x_get_eeprom_len, .get_eeprom = ax8817x_get_eeprom, .get_settings = ax8817x_get_settings, .set_settings = ax8817x_set_settings, }; static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) { int ret; void *buf; get_endpoints(dev,intf); buf = kmalloc(6, GFP_KERNEL); if(!buf) { dbg ("Cannot allocate memory for buffer"); ret = -ENOMEM; goto out1; } if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS, 0x00B0, 0, 0, buf)) < 0) goto out2; msleep(5); if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0x0001, 0, 0, buf)) < 0) { dbg("Select PHY #1 failed: %d", ret); goto out2; } if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD, 0, 0, buf)) < 0) { dbg("Failed to power down internal PHY: %d", ret); goto out2; } msleep(150); if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR, 0, 0, buf)) < 0) { dbg("Failed to perform software reset: %d", ret); goto out2; } msleep(150); if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) { dbg("Failed to set Internal/External PHY reset control: %d", ret); goto out2; } msleep(150); if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0000, 0, 0, buf)) < 0) { dbg("Failed to reset RX_CTL: %d", ret); goto out2; } /* Get the MAC address */ memset(buf, 0, ETH_ALEN); if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf)) < 0) { dbg("Failed to read MAC address: %d", ret); goto out2; } memcpy(dev->net->dev_addr, buf, ETH_ALEN); if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, buf)) < 0) { dbg("Enabling software MII failed: %d", ret); goto out2; } if (((ret = ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, 0x0010, 2, 2, buf)) < 0) || (*((u16 *)buf) != 0x003b)) { dbg("Read PHY register 2 must be 0x3b00: %d", ret); goto out2; } /* Initialize MII structure */ dev->mii.dev = dev->net; dev->mii.mdio_read = ax8817x_mdio_read; dev->mii.mdio_write = ax8817x_mdio_write; dev->mii.phy_id_mask = 0xff; dev->mii.reg_num_mask = 0xff; /* Get the PHY id */ if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) { dbg("Error reading PHY ID: %02x", ret); goto out2; } else if (ret < 2) { /* this should always return 2 bytes */ dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", ret); ret = -EIO; goto out2; } dev->mii.phy_id = *((u8 *)buf + 1); if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL, 0, 0, buf)) < 0) { dbg("Set external PHY reset pin level: %d", ret); goto out2; } msleep(150); if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) { dbg("Set Internal/External PHY reset control: %d", ret); goto out2; } msleep(150); dev->net->set_multicast_list = ax8817x_set_multicast; dev->net->ethtool_ops = &ax88772_ethtool_ops; ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_CSMA); mii_nway_restart(&dev->mii); if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, AX88772_MEDIUM_DEFAULT, 0, 0, buf)) < 0) { dbg("Write medium mode register: %d", ret); goto out2; } if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0, AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,AX88772_IPG2_DEFAULT, 0, buf)) < 0) { dbg("Write IPG,IPG1,IPG2 failed: %d", ret); goto out2; } if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) { dbg("Failed to set hardware MII: %02x", ret); goto out2; } /* Set RX_CTL to default values with 2k buffer, and enable cactus */ if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0088, 0, 0, buf)) < 0) { dbg("Reset RX_CTL failed: %d", ret); goto out2; } kfree(buf); return 0; out2: kfree(buf); out1: return ret; } static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb) { u32 *header; char *packet; struct sk_buff *ax_skb; u16 size; header = (u32 *) skb->data; le32_to_cpus(header); packet = (char *)(header + 1); skb_pull(skb, 4); while (skb->len > 0) { if ((short)(*header & 0x0000ffff) != ~((short)((*header & 0xffff0000) >> 16))) { devdbg(dev,"header length data is error"); } /* get the packet length */ size = (u16) (*header & 0x0000ffff); if ((skb->len) - ((size + 1) & 0xfffe) == 0) return 2; if (size > ETH_FRAME_LEN) { devdbg(dev,"invalid rx length %d", size); return 0; } ax_skb = skb_clone(skb, GFP_ATOMIC); if (ax_skb) { ax_skb->len = size; ax_skb->data = packet; ax_skb->tail = packet + size; skb_return(dev, ax_skb); } else { return 0; } skb_pull(skb, (size + 1) & 0xfffe); if (skb->len == 0) break; header = (u32 *) skb->data; le32_to_cpus(header); packet = (char *)(header + 1); skb_pull(skb, 4); } if (skb->len < 0) { devdbg(dev,"invalid rx length %d", skb->len); return 0; } return 1; } static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff *skb, int flags) { int padlen; int headroom = skb_headroom(skb); int tailroom = skb_tailroom(skb); u32 *packet_len; u32 *padbytes_ptr; padlen = ((skb->len + 4) % 512) ? 0 : 4; if ((!skb_cloned(skb)) && ((headroom + tailroom) >= (4 + padlen))) { if ((headroom < 4) || (tailroom < padlen)) { skb->data = memmove(skb->head + 4, skb->data, skb->len); skb->tail = skb->data + skb->len; } } else { struct sk_buff *skb2; skb2 = skb_copy_expand(skb, 4, padlen, flags); dev_kfree_skb_any(skb); skb = skb2; if (!skb) return NULL; } packet_len = (u32 *) skb_push(skb, 4); packet_len = (u32 *) skb->data; *packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4); if ((skb->len % 512) == 0) { padbytes_ptr = (u32 *) skb->tail; *padbytes_ptr = 0xffff0000; skb_put(skb, padlen); } return skb; } static int ax88772_link_reset(struct usbnet *dev) { u16 lpa; u16 mode; mode = AX88772_MEDIUM_DEFAULT; lpa = ax8817x_mdio_read(dev->net, dev->mii.phy_id, MII_LPA); if ((lpa & LPA_DUPLEX) == 0) mode &= ~AX88772_MEDIUM_FULL_DUPLEX; if ((lpa & LPA_100) == 0) mode &= ~AX88772_MEDIUM_100MB; ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL); return 0; } static const struct driver_info ax8817x_info = { .description = "ASIX AX8817x USB 2.0 Ethernet", .bind = ax8817x_bind, .status = ax8817x_status, .link_reset = ax88172_link_reset, .reset = ax88172_link_reset, .flags = FLAG_ETHER, .data = 0x00130103, }; static const struct driver_info dlink_dub_e100_info = { .description = "DLink DUB-E100 USB Ethernet", .bind = ax8817x_bind, .status = ax8817x_status, .link_reset = ax88172_link_reset, .reset = ax88172_link_reset, .flags = FLAG_ETHER, .data = 0x009f9d9f, }; static const struct driver_info netgear_fa120_info = { .description = "Netgear FA-120 USB Ethernet", .bind = ax8817x_bind, .status = ax8817x_status, .link_reset = ax88172_link_reset, .reset = ax88172_link_reset, .flags = FLAG_ETHER, .data = 0x00130103, }; static const struct driver_info hawking_uf200_info = { .description = "Hawking UF200 USB Ethernet", .bind = ax8817x_bind, .status = ax8817x_status, .link_reset = ax88172_link_reset, .reset = ax88172_link_reset, .flags = FLAG_ETHER, .data = 0x001f1d1f, }; static const struct driver_info ax88772_info = { .description = "ASIX AX88772 USB 2.0 Ethernet", .bind = ax88772_bind, .status = ax8817x_status, .link_reset = ax88772_link_reset, .reset = ax88772_link_reset, .flags = FLAG_ETHER | FLAG_FRAMING_AX, .rx_fixup = ax88772_rx_fixup, .tx_fixup = ax88772_tx_fixup, .data = 0x00130103, }; #endif /* CONFIG_USB_AX8817X */ #ifdef CONFIG_USB_BELKIN #define HAVE_HARDWARE /*------------------------------------------------------------------------- * * Belkin F5U104 ... two NetChip 2280 devices + Atmel microcontroller * * ... also two eTEK designs, including one sold as "Advance USBNET" * *-------------------------------------------------------------------------*/ static const struct driver_info belkin_info = { .description = "Belkin, eTEK, or compatible", }; #endif /* CONFIG_USB_BELKIN */ /*------------------------------------------------------------------------- * * Communications Device Class declarations. * Used by CDC Ethernet, and some CDC variants * *-------------------------------------------------------------------------*/ #ifdef CONFIG_USB_CDCETHER #define NEED_GENERIC_CDC #endif #ifdef CONFIG_USB_ZAURUS /* Ethernet variant uses funky framing, broken ethernet addressing */ #define NEED_GENERIC_CDC #endif #ifdef CONFIG_USB_RNDIS /* ACM variant uses even funkier framing, complex control RPC scheme */ #define NEED_GENERIC_CDC #endif #ifdef NEED_GENERIC_CDC #include <linux/usb_cdc.h> struct cdc_state { struct usb_cdc_header_desc *header; struct usb_cdc_union_desc *u; struct usb_cdc_ether_desc *ether; struct usb_interface *control; struct usb_interface *data; }; static struct usb_driver usbnet_driver; /* * probes control interface, claims data interface, collects the bulk * endpoints, activates data interface (if needed), maybe sets MTU. * all pure cdc, except for certain firmware workarounds. */ static int generic_cdc_bind (struct usbnet *dev, struct usb_interface *intf) { u8 *buf = intf->cur_altsetting->extra; int len = intf->cur_altsetting->extralen; struct usb_interface_descriptor *d; struct cdc_state *info = (void *) &dev->data; int status; int rndis; if (sizeof dev->data < sizeof *info) return -EDOM; /* expect strict spec conformance for the descriptors, but * cope with firmware which stores them in the wrong place */ if (len == 0 && dev->udev->actconfig->extralen) { /* Motorola SB4100 (and others: Brad Hards says it's * from a Broadcom design) put CDC descriptors here */ buf = dev->udev->actconfig->extra; len = dev->udev->actconfig->extralen; if (len) dev_dbg (&intf->dev, "CDC descriptors on config\n"); } /* this assumes that if there's a non-RNDIS vendor variant * of cdc-acm, it'll fail RNDIS requests cleanly. */ rndis = (intf->cur_altsetting->desc.bInterfaceProtocol == 0xff); memset (info, 0, sizeof *info); info->control = intf; while (len > 3) { if (buf [1] != USB_DT_CS_INTERFACE) goto next_desc; /* use bDescriptorSubType to identify the CDC descriptors. * We expect devices with CDC header and union descriptors. * For CDC Ethernet we need the ethernet descriptor. * For RNDIS, ignore two (pointless) CDC modem descriptors * in favor of a complicated OID-based RPC scheme doing what * CDC Ethernet achieves with a simple descriptor. */ switch (buf [2]) { case USB_CDC_HEADER_TYPE: if (info->header) { dev_dbg (&intf->dev, "extra CDC header\n"); goto bad_desc; } info->header = (void *) buf; if (info->header->bLength != sizeof *info->header) { dev_dbg (&intf->dev, "CDC header len %u\n", info->header->bLength); goto bad_desc; } break; case USB_CDC_UNION_TYPE: if (info->u) { dev_dbg (&intf->dev, "extra CDC union\n"); goto bad_desc; } info->u = (void *) buf; if (info->u->bLength != sizeof *info->u) { dev_dbg (&intf->dev, "CDC union len %u\n", info->u->bLength); goto bad_desc; } /* we need a master/control interface (what we're * probed with) and a slave/data interface; union * descriptors sort this all out. */ info->control = usb_ifnum_to_if(dev->udev, info->u->bMasterInterface0); info->data = usb_ifnum_to_if(dev->udev, info->u->bSlaveInterface0); if (!info->control || !info->data) { dev_dbg (&intf->dev, "master #%u/%p slave #%u/%p\n", info->u->bMasterInterface0, info->control, info->u->bSlaveInterface0, info->data); goto bad_desc; } if (info->control != intf) { dev_dbg (&intf->dev, "bogus CDC Union\n"); /* Ambit USB Cable Modem (and maybe others) * interchanges master and slave interface. */ if (info->data == intf) { info->data = info->control; info->control = intf; } else goto bad_desc; } /* a data interface altsetting does the real i/o */ d = &info->data->cur_altsetting->desc; if (d->bInterfaceClass != USB_CLASS_CDC_DATA) { dev_dbg (&intf->dev, "slave class %u\n", d->bInterfaceClass); goto bad_desc; } break; case USB_CDC_ETHERNET_TYPE: if (info->ether) { dev_dbg (&intf->dev, "extra CDC ether\n"); goto bad_desc; } info->ether = (void *) buf; if (info->ether->bLength != sizeof *info->ether) { dev_dbg (&intf->dev, "CDC ether len %u\n", info->ether->bLength); goto bad_desc; } dev->net->mtu = le16_to_cpup ( &info->ether->wMaxSegmentSize) - ETH_HLEN; /* because of Zaurus, we may be ignoring the host * side link address we were given. */ break; } next_desc: len -= buf [0]; /* bLength */ buf += buf [0]; } if (!info->header || !info->u || (!rndis && !info->ether)) { dev_dbg (&intf->dev, "missing cdc %s%s%sdescriptor\n", info->header ? "" : "header ", info->u ? "" : "union ", info->ether ? "" : "ether "); goto bad_desc; } /* claim data interface and set it up ... with side effects. * network traffic can't flow until an altsetting is enabled. */ status = usb_driver_claim_interface (&usbnet_driver, info->data, dev); if (status < 0) return status; status = get_endpoints (dev, info->data); if (status < 0) { /* ensure immediate exit from usbnet_disconnect */ usb_set_intfdata(info->data, NULL); usb_driver_release_interface (&usbnet_driver, info->data); return status; } /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */ dev->status = NULL; if (info->control->cur_altsetting->desc.bNumEndpoints == 1) { struct usb_endpoint_descriptor *desc; dev->status = &info->control->cur_altsetting->endpoint [0]; desc = &dev->status->desc; if (desc->bmAttributes != USB_ENDPOINT_XFER_INT || !(desc->bEndpointAddress & USB_DIR_IN) || (le16_to_cpu(desc->wMaxPacketSize) < sizeof (struct usb_cdc_notification)) || !desc->bInterval) { dev_dbg (&intf->dev, "bad notification endpoint\n"); dev->status = NULL; } } if (rndis && !dev->status) { dev_dbg (&intf->dev, "missing RNDIS status endpoint\n"); usb_set_intfdata(info->data, NULL); usb_driver_release_interface (&usbnet_driver, info->data); return -ENODEV; } return 0; bad_desc: dev_info (&dev->udev->dev, "bad CDC descriptors\n"); return -ENODEV; } static void cdc_unbind (struct usbnet *dev, struct usb_interface *intf) { struct cdc_state *info = (void *) &dev->data; /* disconnect master --> disconnect slave */ if (intf == info->control && info->data) { /* ensure immediate exit from usbnet_disconnect */ usb_set_intfdata(info->data, NULL); usb_driver_release_interface (&usbnet_driver, info->data); info->data = NULL; } /* and vice versa (just in case) */ else if (intf == info->data && info->control) { /* ensure immediate exit from usbnet_disconnect */ usb_set_intfdata(info->control, NULL); usb_driver_release_interface (&usbnet_driver, info->control); info->control = NULL; } } #endif /* NEED_GENERIC_CDC */ #ifdef CONFIG_USB_CDCETHER #define HAVE_HARDWARE /*------------------------------------------------------------------------- * * Communications Device Class, Ethernet Control model * * Takes two interfaces. The DATA interface is inactive till an altsetting * is selected. Configuration data includes class descriptors. * * This should interop with whatever the 2.4 "CDCEther.c" driver * (by Brad Hards) talked with. * *-------------------------------------------------------------------------*/ #include <linux/ctype.h> static void dumpspeed (struct usbnet *dev, __le32 *speeds) { if (netif_msg_timer (dev)) devinfo (dev, "link speeds: %u kbps up, %u kbps down", __le32_to_cpu(speeds[0]) / 1000, __le32_to_cpu(speeds[1]) / 1000); } static void cdc_status (struct usbnet *dev, struct urb *urb) { struct usb_cdc_notification *event; if (urb->actual_length < sizeof *event) return; /* SPEED_CHANGE can get split into two 8-byte packets */ if (test_and_clear_bit (EVENT_STS_SPLIT, &dev->flags)) { dumpspeed (dev, (__le32 *) urb->transfer_buffer); return; } event = urb->transfer_buffer; switch (event->bNotificationType) { case USB_CDC_NOTIFY_NETWORK_CONNECTION: if (netif_msg_timer (dev)) devdbg (dev, "CDC: carrier %s", event->wValue ? "on" : "off"); if (event->wValue) netif_carrier_on(dev->net); else netif_carrier_off(dev->net); break; case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */ if (netif_msg_timer (dev)) devdbg (dev, "CDC: speed change (len %d)", urb->actual_length); if (urb->actual_length != (sizeof *event + 8)) set_bit (EVENT_STS_SPLIT, &dev->flags); else dumpspeed (dev, (__le32 *) &event[1]); break; // case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: /* RNDIS; or unsolicited */ default: deverr (dev, "CDC: unexpected notification %02x!", event->bNotificationType); break; } } static u8 nibble (unsigned char c) { if (likely (isdigit (c))) return c - '0'; c = toupper (c); if (likely (isxdigit (c))) return 10 + c - 'A'; return 0; } static inline int get_ethernet_addr (struct usbnet *dev, struct usb_cdc_ether_desc *e) { int tmp, i; unsigned char buf [13]; tmp = usb_string (dev->udev, e->iMACAddress, buf, sizeof buf); if (tmp != 12) { dev_dbg (&dev->udev->dev, "bad MAC string %d fetch, %d\n", e->iMACAddress, tmp); if (tmp >= 0) tmp = -EINVAL; return tmp; } for (i = tmp = 0; i < 6; i++, tmp += 2) dev->net->dev_addr [i] = (nibble (buf [tmp]) << 4) + nibble (buf [tmp + 1]); return 0; } static int cdc_bind (struct usbnet *dev, struct usb_interface *intf) { int status; struct cdc_state *info = (void *) &dev->data; status = generic_cdc_bind (dev, intf); if (status < 0) return status; status = get_ethernet_addr (dev, info->ether); if (status < 0) { usb_set_intfdata(info->data, NULL); usb_driver_release_interface (&usbnet_driver, info->data); return status; } /* FIXME cdc-ether has some multicast code too, though it complains * in routine cases. info->ether describes the multicast support. */ return 0; } static const struct driver_info cdc_info = { .description = "CDC Ethernet Device", .flags = FLAG_ETHER, // .check_connect = cdc_check_connect, .bind = cdc_bind, .unbind = cdc_unbind, .status = cdc_status, }; #endif /* CONFIG_USB_CDCETHER */ #ifdef CONFIG_USB_EPSON2888 #define HAVE_HARDWARE /*------------------------------------------------------------------------- * * EPSON USB clients * * This is the same idea as Linux PDAs (below) except the firmware in the * device might not be Tux-powered. Epson provides reference firmware that * implements this interface. Product developers can reuse or modify that * code, such as by using their own product and vendor codes. * * Support was from Juro Bystricky <bystricky.juro@erd.epson.com> * *-------------------------------------------------------------------------*/ static const struct driver_info epson2888_info = { .description = "Epson USB Device", .check_connect = always_connected, .in = 4, .out = 3, }; #endif /* CONFIG_USB_EPSON2888 */ #ifdef CONFIG_USB_GENESYS #define HAVE_HARDWARE /*------------------------------------------------------------------------- * * GeneSys GL620USB-A (www.genesyslogic.com.tw) * * ... should partially interop with the Win32 driver for this hardware * The GeneSys docs imply there's some NDIS issue motivating this framing. * * Some info from GeneSys: * - GL620USB-A is full duplex; GL620USB is only half duplex for bulk. * (Some cables, like the BAFO-100c, use the half duplex version.) * - For the full duplex model, the low bit of the version code says * which side is which ("left/right"). * - For the half duplex type, a control/interrupt handshake settles * the transfer direction. (That's disabled here, partially coded.) * A control URB would block until other side writes an interrupt. * * Original code from Jiun-Jie Huang <huangjj@genesyslogic.com.tw> * and merged into "usbnet" by Stanislav Brabec <utx@penguin.cz>. * *-------------------------------------------------------------------------*/ // control msg write command #define GENELINK_CONNECT_WRITE 0xF0 // interrupt pipe index #define GENELINK_INTERRUPT_PIPE 0x03 // interrupt read buffer size #define INTERRUPT_BUFSIZE 0x08 // interrupt pipe interval value #define GENELINK_INTERRUPT_INTERVAL 0x10 // max transmit packet number per transmit #define GL_MAX_TRANSMIT_PACKETS 32 // max packet length #define GL_MAX_PACKET_LEN 1514 // max receive buffer size #define GL_RCV_BUF_SIZE \ (((GL_MAX_PACKET_LEN + 4) * GL_MAX_TRANSMIT_PACKETS) + 4) struct gl_packet { u32 packet_length; char packet_data [1]; }; struct gl_header { u32 packet_count; struct gl_packet packets; }; #ifdef GENELINK_ACK // FIXME: this code is incomplete, not debugged; it doesn't // handle interrupts correctly. interrupts should be generic // code like all other device I/O, anyway. struct gl_priv { struct urb *irq_urb; char irq_buf [INTERRUPT_BUFSIZE]; }; static inline int gl_control_write (struct usbnet *dev, u8 request, u16 value) { int retval; retval = usb_control_msg (dev->udev, usb_sndctrlpipe (dev->udev, 0), request, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, value, 0, // index 0, // data buffer 0, // size CONTROL_TIMEOUT_MS); return retval; } static void gl_interrupt_complete (struct urb *urb, struct pt_regs *regs) { int status = urb->status; switch (status) { case 0: /* success */ break; case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: /* this urb is terminated, clean up */ dbg("%s - urb shutting down with status: %d", __FUNCTION__, status); return; default: dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status); } status = usb_submit_urb (urb, GFP_ATOMIC); if (status) err ("%s - usb_submit_urb failed with result %d", __FUNCTION__, status); } static int gl_interrupt_read (struct usbnet *dev) { struct gl_priv *priv = dev->priv_data; int retval; // issue usb interrupt read if (priv && priv->irq_urb) { // submit urb if ((retval = usb_submit_urb (priv->irq_urb, GFP_KERNEL)) != 0) dbg ("gl_interrupt_read: submit fail - %X...", retval); else dbg ("gl_interrupt_read: submit success..."); } return 0; } // check whether another side is connected static int genelink_check_connect (struct usbnet *dev) { int retval; dbg ("genelink_check_connect..."); // detect whether another side is connected if ((retval = gl_control_write (dev, GENELINK_CONNECT_WRITE, 0)) != 0) { dbg ("%s: genelink_check_connect write fail - %X", dev->net->name, retval); return retval; } // usb interrupt read to ack another side if ((retval = gl_interrupt_read (dev)) != 0) { dbg ("%s: genelink_check_connect read fail - %X", dev->net->name, retval); return retval; } dbg ("%s: genelink_check_connect read success", dev->net->name); return 0; } // allocate and initialize the private data for genelink static int genelink_init (struct usbnet *dev) { struct gl_priv *priv; // allocate the private data structure if ((priv = kmalloc (sizeof *priv, GFP_KERNEL)) == 0) { dbg ("%s: cannot allocate private data per device", dev->net->name); return -ENOMEM; } // allocate irq urb if ((priv->irq_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) { dbg ("%s: cannot allocate private irq urb per device", dev->net->name); kfree (priv); return -ENOMEM; } // fill irq urb usb_fill_int_urb (priv->irq_urb, dev->udev, usb_rcvintpipe (dev->udev, GENELINK_INTERRUPT_PIPE), priv->irq_buf, INTERRUPT_BUFSIZE, gl_interrupt_complete, 0, GENELINK_INTERRUPT_INTERVAL); // set private data pointer dev->priv_data = priv; return 0; } // release the private data static int genelink_free (struct usbnet *dev) { struct gl_priv *priv = dev->priv_data; if (!priv) return 0; // FIXME: can't cancel here; it's synchronous, and // should have happened earlier in any case (interrupt // handling needs to be generic) // cancel irq urb first usb_kill_urb (priv->irq_urb); // free irq urb usb_free_urb (priv->irq_urb); // free the private data structure kfree (priv); return 0; } #endif static int genelink_rx_fixup (struct usbnet *dev, struct sk_buff *skb) { struct gl_header *header; struct gl_packet *packet; struct sk_buff *gl_skb; u32 size; header = (struct gl_header *) skb->data; // get the packet count of the received skb le32_to_cpus (&header->packet_count); if ((header->packet_count > GL_MAX_TRANSMIT_PACKETS) || (header->packet_count < 0)) { dbg ("genelink: invalid received packet count %d", header->packet_count); return 0; } // set the current packet pointer to the first packet packet = &header->packets; // decrement the length for the packet count size 4 bytes skb_pull (skb, 4); while (header->packet_count > 1) { // get the packet length size = packet->packet_length; // this may be a broken packet if (size > GL_MAX_PACKET_LEN) { dbg ("genelink: invalid rx length %d", size); return 0; } // allocate the skb for the individual packet gl_skb = alloc_skb (size, GFP_ATOMIC); if (gl_skb) { // copy the packet data to the new skb memcpy(skb_put(gl_skb, size), packet->packet_data, size); skb_return (dev, skb); } // advance to the next packet packet = (struct gl_packet *) &packet->packet_data [size]; header->packet_count--; // shift the data pointer to the next gl_packet skb_pull (skb, size + 4); } // skip the packet length field 4 bytes skb_pull (skb, 4); if (skb->len > GL_MAX_PACKET_LEN) { dbg ("genelink: invalid rx length %d", skb->len); return 0; } return 1; } static struct sk_buff * genelink_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags) { int padlen; int length = skb->len; int headroom = skb_headroom (skb); int tailroom = skb_tailroom (skb); u32 *packet_count; u32 *packet_len; // FIXME: magic numbers, bleech padlen = ((skb->len + (4 + 4*1)) % 64) ? 0 : 1; if ((!skb_cloned (skb)) && ((headroom + tailroom) >= (padlen + (4 + 4*1)))) { if ((headroom < (4 + 4*1)) || (tailroom < padlen)) { skb->data = memmove (skb->head + (4 + 4*1), skb->data, skb->len); skb->tail = skb->data + skb->len; } } else { struct sk_buff *skb2; skb2 = skb_copy_expand (skb, (4 + 4*1) , padlen, flags); dev_kfree_skb_any (skb); skb = skb2; if (!skb) return NULL; } // attach the packet count to the header packet_count = (u32 *) skb_push (skb, (4 + 4*1)); packet_len = packet_count + 1; // FIXME little endian? *packet_count = 1; *packet_len = length; // add padding byte if ((skb->len % dev->maxpacket) == 0) skb_put (skb, 1); return skb; } static const struct driver_info genelink_info = { .description = "Genesys GeneLink", .flags = FLAG_FRAMING_GL | FLAG_NO_SETINT, .rx_fixup = genelink_rx_fixup, .tx_fixup = genelink_tx_fixup, .in = 1, .out = 2, #ifdef GENELINK_ACK .check_connect =genelink_check_connect, #endif }; #endif /* CONFIG_USB_GENESYS */ #ifdef CONFIG_USB_NET1080 #define HAVE_HARDWARE /*------------------------------------------------------------------------- * * Netchip 1080 driver ... http://www.netchip.com * Used in LapLink cables * *-------------------------------------------------------------------------*/ #define dev_packet_id data[0] #define frame_errors data[1] /* * NetChip framing of ethernet packets, supporting additional error * checks for links that may drop bulk packets from inside messages. * Odd USB length == always short read for last usb packet. * - nc_header * - Ethernet header (14 bytes) * - payload * - (optional padding byte, if needed so length becomes odd) * - nc_trailer * * This framing is to be avoided for non-NetChip devices. */ struct nc_header { // packed: __le16 hdr_len; // sizeof nc_header (LE, all) __le16 packet_len; // payload size (including ethhdr) __le16 packet_id; // detects dropped packets #define MIN_HEADER 6 // all else is optional, and must start with: // u16 vendorId; // from usb-if // u16 productId; } __attribute__((__packed__)); #define PAD_BYTE ((unsigned char)0xAC) struct nc_trailer { __le16 packet_id; } __attribute__((__packed__)); // packets may use FLAG_FRAMING_NC and optional pad #define FRAMED_SIZE(mtu) (sizeof (struct nc_header) \ + sizeof (struct ethhdr) \ + (mtu) \ + 1 \ + sizeof (struct nc_trailer)) #define MIN_FRAMED FRAMED_SIZE(0) /* * Zero means no timeout; else, how long a 64 byte bulk packet may be queued * before the hardware drops it. If that's done, the driver will need to * frame network packets to guard against the dropped USB packets. The win32 * driver sets this for both sides of the link. */ #define NC_READ_TTL_MS ((u8)255) // ms /* * We ignore most registers and EEPROM contents. */ #define REG_USBCTL ((u8)0x04) #define REG_TTL ((u8)0x10) #define REG_STATUS ((u8)0x11) /* * Vendor specific requests to read/write data */ #define REQUEST_REGISTER ((u8)0x10) #define REQUEST_EEPROM ((u8)0x11) static int nc_vendor_read (struct usbnet *dev, u8 req, u8 regnum, u16 *retval_ptr) { int status = usb_control_msg (dev->udev, usb_rcvctrlpipe (dev->udev, 0), req, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, regnum, retval_ptr, sizeof *retval_ptr, CONTROL_TIMEOUT_MS); if (status > 0) status = 0; if (!status) le16_to_cpus (retval_ptr); return status; } static inline int nc_register_read (struct usbnet *dev, u8 regnum, u16 *retval_ptr) { return nc_vendor_read (dev, REQUEST_REGISTER, regnum, retval_ptr); } // no retval ... can become async, usable in_interrupt() static void nc_vendor_write (struct usbnet *dev, u8 req, u8 regnum, u16 value) { usb_control_msg (dev->udev, usb_sndctrlpipe (dev->udev, 0), req, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, regnum, NULL, 0, // data is in setup packet CONTROL_TIMEOUT_MS); } static inline void nc_register_write (struct usbnet *dev, u8 regnum, u16 value) { nc_vendor_write (dev, REQUEST_REGISTER, regnum, value); } #if 0 static void nc_dump_registers (struct usbnet *dev) { u8 reg; u16 *vp = kmalloc (sizeof (u16)); if (!vp) { dbg ("no memory?"); return; } dbg ("%s registers:", dev->net->name); for (reg = 0; reg < 0x20; reg++) { int retval; // reading some registers is trouble if (reg >= 0x08 && reg <= 0xf) continue; if (reg >= 0x12 && reg <= 0x1e) continue; retval = nc_register_read (dev, reg, vp); if (retval < 0) dbg ("%s reg [0x%x] ==> error %d", dev->net->name, reg, retval); else dbg ("%s reg [0x%x] = 0x%x", dev->net->name, reg, *vp); } kfree (vp); } #endif /*-------------------------------------------------------------------------*/ /* * Control register */ #define USBCTL_WRITABLE_MASK 0x1f0f // bits 15-13 reserved, r/o #define USBCTL_ENABLE_LANG (1 << 12) #define USBCTL_ENABLE_MFGR (1 << 11) #define USBCTL_ENABLE_PROD (1 << 10) #define USBCTL_ENABLE_SERIAL (1 << 9) #define USBCTL_ENABLE_DEFAULTS (1 << 8) // bits 7-4 reserved, r/o #define USBCTL_FLUSH_OTHER (1 << 3) #define USBCTL_FLUSH_THIS (1 << 2) #define USBCTL_DISCONN_OTHER (1 << 1) #define USBCTL_DISCONN_THIS (1 << 0) static inline void nc_dump_usbctl (struct usbnet *dev, u16 usbctl) { if (!netif_msg_link (dev)) return; devdbg (dev, "net1080 %s-%s usbctl 0x%x:%s%s%s%s%s;" " this%s%s;" " other%s%s; r/o 0x%x", dev->udev->bus->bus_name, dev->udev->devpath, usbctl, (usbctl & USBCTL_ENABLE_LANG) ? " lang" : "", (usbctl & USBCTL_ENABLE_MFGR) ? " mfgr" : "", (usbctl & USBCTL_ENABLE_PROD) ? " prod" : "", (usbctl & USBCTL_ENABLE_SERIAL) ? " serial" : "", (usbctl & USBCTL_ENABLE_DEFAULTS) ? " defaults" : "", (usbctl & USBCTL_FLUSH_OTHER) ? " FLUSH" : "", (usbctl & USBCTL_DISCONN_OTHER) ? " DIS" : "", (usbctl & USBCTL_FLUSH_THIS) ? " FLUSH" : "", (usbctl & USBCTL_DISCONN_THIS) ? " DIS" : "", usbctl & ~USBCTL_WRITABLE_MASK ); } /*-------------------------------------------------------------------------*/ /* * Status register */ #define STATUS_PORT_A (1 << 15) #define STATUS_CONN_OTHER (1 << 14) #define STATUS_SUSPEND_OTHER (1 << 13) #define STATUS_MAILBOX_OTHER (1 << 12) #define STATUS_PACKETS_OTHER(n) (((n) >> 8) && 0x03) #define STATUS_CONN_THIS (1 << 6) #define STATUS_SUSPEND_THIS (1 << 5) #define STATUS_MAILBOX_THIS (1 << 4) #define STATUS_PACKETS_THIS(n) (((n) >> 0) && 0x03) #define STATUS_UNSPEC_MASK 0x0c8c #define STATUS_NOISE_MASK ((u16)~(0x0303|STATUS_UNSPEC_MASK)) static inline void nc_dump_status (struct usbnet *dev, u16 status) { if (!netif_msg_link (dev)) return; devdbg (dev, "net1080 %s-%s status 0x%x:" " this (%c) PKT=%d%s%s%s;" " other PKT=%d%s%s%s; unspec 0x%x", dev->udev->bus->bus_name, dev->udev->devpath, status, // XXX the packet counts don't seem right // (1 at reset, not 0); maybe UNSPEC too (status & STATUS_PORT_A) ? 'A' : 'B', STATUS_PACKETS_THIS (status), (status & STATUS_CONN_THIS) ? " CON" : "", (status & STATUS_SUSPEND_THIS) ? " SUS" : "", (status & STATUS_MAILBOX_THIS) ? " MBOX" : "", STATUS_PACKETS_OTHER (status), (status & STATUS_CONN_OTHER) ? " CON" : "", (status & STATUS_SUSPEND_OTHER) ? " SUS" : "", (status & STATUS_MAILBOX_OTHER) ? " MBOX" : "", status & STATUS_UNSPEC_MASK ); } /*-------------------------------------------------------------------------*/ /* * TTL register */ #define TTL_THIS(ttl) (0x00ff & ttl) #define TTL_OTHER(ttl) (0x00ff & (ttl >> 8)) #define MK_TTL(this,other) ((u16)(((other)<<8)|(0x00ff&(this)))) static inline void nc_dump_ttl (struct usbnet *dev, u16 ttl) { if (netif_msg_link (dev)) devdbg (dev, "net1080 %s-%s ttl 0x%x this = %d, other = %d", dev->udev->bus->bus_name, dev->udev->devpath, ttl, TTL_THIS (ttl), TTL_OTHER (ttl)); } /*-------------------------------------------------------------------------*/ static int net1080_reset (struct usbnet *dev) { u16 usbctl, status, ttl; u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL); int retval; if (!vp) return -ENOMEM; // nc_dump_registers (dev); if ((retval = nc_register_read (dev, REG_STATUS, vp)) < 0) { dbg ("can't read %s-%s status: %d", dev->udev->bus->bus_name, dev->udev->devpath, retval); goto done; } status = *vp; nc_dump_status (dev, status); if ((retval = nc_register_read (dev, REG_USBCTL, vp)) < 0) { dbg ("can't read USBCTL, %d", retval); goto done; } usbctl = *vp; nc_dump_usbctl (dev, usbctl); nc_register_write (dev, REG_USBCTL, USBCTL_FLUSH_THIS | USBCTL_FLUSH_OTHER); if ((retval = nc_register_read (dev, REG_TTL, vp)) < 0) { dbg ("can't read TTL, %d", retval); goto done; } ttl = *vp; // nc_dump_ttl (dev, ttl); nc_register_write (dev, REG_TTL, MK_TTL (NC_READ_TTL_MS, TTL_OTHER (ttl)) ); dbg ("%s: assigned TTL, %d ms", dev->net->name, NC_READ_TTL_MS); if (netif_msg_link (dev)) devinfo (dev, "port %c, peer %sconnected", (status & STATUS_PORT_A) ? 'A' : 'B', (status & STATUS_CONN_OTHER) ? "" : "dis" ); retval = 0; done: kfree (vp); return retval; } static int net1080_check_connect (struct usbnet *dev) { int retval; u16 status; u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL); if (!vp) return -ENOMEM; retval = nc_register_read (dev, REG_STATUS, vp); status = *vp; kfree (vp); if (retval != 0) { dbg ("%s net1080_check_conn read - %d", dev->net->name, retval); return retval; } if ((status & STATUS_CONN_OTHER) != STATUS_CONN_OTHER) return -ENOLINK; return 0; } static void nc_flush_complete (struct urb *urb, struct pt_regs *regs) { kfree (urb->context); usb_free_urb(urb); } static void nc_ensure_sync (struct usbnet *dev) { dev->frame_errors++; if (dev->frame_errors > 5) { struct urb *urb; struct usb_ctrlrequest *req; int status; /* Send a flush */ urb = usb_alloc_urb (0, SLAB_ATOMIC); if (!urb) return; req = kmalloc (sizeof *req, GFP_ATOMIC); if (!req) { usb_free_urb (urb); return; } req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE; req->bRequest = REQUEST_REGISTER; req->wValue = cpu_to_le16 (USBCTL_FLUSH_THIS | USBCTL_FLUSH_OTHER); req->wIndex = cpu_to_le16 (REG_USBCTL); req->wLength = cpu_to_le16 (0); /* queue an async control request, we don't need * to do anything when it finishes except clean up. */ usb_fill_control_urb (urb, dev->udev, usb_sndctrlpipe (dev->udev, 0), (unsigned char *) req, NULL, 0, nc_flush_complete, req); status = usb_submit_urb (urb, GFP_ATOMIC); if (status) { kfree (req); usb_free_urb (urb); return; } if (netif_msg_rx_err (dev)) devdbg (dev, "flush net1080; too many framing errors"); dev->frame_errors = 0; } } static int net1080_rx_fixup (struct usbnet *dev, struct sk_buff *skb) { struct nc_header *header; struct nc_trailer *trailer; u16 hdr_len, packet_len; if (!(skb->len & 0x01) || MIN_FRAMED > skb->len || skb->len > FRAMED_SIZE (dev->net->mtu)) { dev->stats.rx_frame_errors++; dbg ("rx framesize %d range %d..%d mtu %d", skb->len, (int)MIN_FRAMED, (int)FRAMED_SIZE (dev->net->mtu), dev->net->mtu); nc_ensure_sync (dev); return 0; } header = (struct nc_header *) skb->data; hdr_len = le16_to_cpup (&header->hdr_len); packet_len = le16_to_cpup (&header->packet_len); if (FRAMED_SIZE (packet_len) > MAX_PACKET) { dev->stats.rx_frame_errors++; dbg ("packet too big, %d", packet_len); nc_ensure_sync (dev); return 0; } else if (hdr_len < MIN_HEADER) { dev->stats.rx_frame_errors++; dbg ("header too short, %d", hdr_len); nc_ensure_sync (dev); return 0; } else if (hdr_len > MIN_HEADER) { // out of band data for us? dbg ("header OOB, %d bytes", hdr_len - MIN_HEADER); nc_ensure_sync (dev); // switch (vendor/product ids) { ... } } skb_pull (skb, hdr_len); trailer = (struct nc_trailer *) (skb->data + skb->len - sizeof *trailer); skb_trim (skb, skb->len - sizeof *trailer); if ((packet_len & 0x01) == 0) { if (skb->data [packet_len] != PAD_BYTE) { dev->stats.rx_frame_errors++; dbg ("bad pad"); return 0; } skb_trim (skb, skb->len - 1); } if (skb->len != packet_len) { dev->stats.rx_frame_errors++; dbg ("bad packet len %d (expected %d)", skb->len, packet_len); nc_ensure_sync (dev); return 0; } if (header->packet_id != get_unaligned (&trailer->packet_id)) { dev->stats.rx_fifo_errors++; dbg ("(2+ dropped) rx packet_id mismatch 0x%x 0x%x", le16_to_cpu (header->packet_id), le16_to_cpu (trailer->packet_id)); return 0; } #if 0 devdbg (dev, "frame <rx h %d p %d id %d", header->hdr_len, header->packet_len, header->packet_id); #endif dev->frame_errors = 0; return 1; } static struct sk_buff * net1080_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags) { int padlen; struct sk_buff *skb2; padlen = ((skb->len + sizeof (struct nc_header) + sizeof (struct nc_trailer)) & 0x01) ? 0 : 1; if (!skb_cloned (skb)) { int headroom = skb_headroom (skb); int tailroom = skb_tailroom (skb); if ((padlen + sizeof (struct nc_trailer)) <= tailroom && sizeof (struct nc_header) <= headroom) /* There's enough head and tail room */ return skb; if ((sizeof (struct nc_header) + padlen + sizeof (struct nc_trailer)) < (headroom + tailroom)) { /* There's enough total room, so just readjust */ skb->data = memmove (skb->head + sizeof (struct nc_header), skb->data, skb->len); skb->tail = skb->data + skb->len; return skb; } } /* Create a new skb to use with the correct size */ skb2 = skb_copy_expand (skb, sizeof (struct nc_header), sizeof (struct nc_trailer) + padlen, flags); dev_kfree_skb_any (skb); return skb2; } static const struct driver_info net1080_info = { .description = "NetChip TurboCONNECT", .flags = FLAG_FRAMING_NC, .reset = net1080_reset, .check_connect =net1080_check_connect, .rx_fixup = net1080_rx_fixup, .tx_fixup = net1080_tx_fixup, }; #endif /* CONFIG_USB_NET1080 */ #ifdef CONFIG_USB_PL2301 #define HAVE_HARDWARE /*------------------------------------------------------------------------- * * Prolific PL-2301/PL-2302 driver ... http://www.prolifictech.com * * The protocol and handshaking used here should be bug-compatible * with the Linux 2.2 "plusb" driver, by Deti Fliegl. * *-------------------------------------------------------------------------*/ /* * Bits 0-4 can be used for software handshaking; they're set from * one end, cleared from the other, "read" with the interrupt byte. */ #define PL_S_EN (1<<7) /* (feature only) suspend enable */ /* reserved bit -- rx ready (6) ? */ #define PL_TX_READY (1<<5) /* (interrupt only) transmit ready */ #define PL_RESET_OUT (1<<4) /* reset output pipe */ #define PL_RESET_IN (1<<3) /* reset input pipe */ #define PL_TX_C (1<<2) /* transmission complete */ #define PL_TX_REQ (1<<1) /* transmission received */ #define PL_PEER_E (1<<0) /* peer exists */ static inline int pl_vendor_req (struct usbnet *dev, u8 req, u8 val, u8 index) { return usb_control_msg (dev->udev, usb_rcvctrlpipe (dev->udev, 0), req, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, val, index, NULL, 0, CONTROL_TIMEOUT_MS); } static inline int pl_clear_QuickLink_features (struct usbnet *dev, int val) { return pl_vendor_req (dev, 1, (u8) val, 0); } static inline int pl_set_QuickLink_features (struct usbnet *dev, int val) { return pl_vendor_req (dev, 3, (u8) val, 0); } /*-------------------------------------------------------------------------*/ static int pl_reset (struct usbnet *dev) { /* some units seem to need this reset, others reject it utterly. * FIXME be more like "naplink" or windows drivers. */ (void) pl_set_QuickLink_features (dev, PL_S_EN|PL_RESET_OUT|PL_RESET_IN|PL_PEER_E); return 0; } static const struct driver_info prolific_info = { .description = "Prolific PL-2301/PL-2302", .flags = FLAG_NO_SETINT, /* some PL-2302 versions seem to fail usb_set_interface() */ .reset = pl_reset, }; #endif /* CONFIG_USB_PL2301 */ #ifdef CONFIG_USB_KC2190 #define HAVE_HARDWARE static const struct driver_info kc2190_info = { .description = "KC Technology KC-190", }; #endif /* CONFIG_USB_KC2190 */ #ifdef CONFIG_USB_ARMLINUX #define HAVE_HARDWARE /*------------------------------------------------------------------------- * * Intel's SA-1100 chip integrates basic USB support, and is used * in PDAs like some iPaqs, the Yopy, some Zaurus models, and more. * When they run Linux, arch/arm/mach-sa1100/usb-eth.c may be used to * network using minimal USB framing data. * * This describes the driver currently in standard ARM Linux kernels. * The Zaurus uses a different driver (see later). * * PXA25x and PXA210 use XScale cores (ARM v5TE) with better USB support * and different USB endpoint numbering than the SA1100 devices. The * mach-pxa/usb-eth.c driver re-uses the device ids from mach-sa1100 * so we rely on the endpoint descriptors. * *-------------------------------------------------------------------------*/ static const struct driver_info linuxdev_info = { .description = "Linux Device", .check_connect = always_connected, }; static const struct driver_info yopy_info = { .description = "Yopy", .check_connect = always_connected, }; static const struct driver_info blob_info = { .description = "Boot Loader OBject", .check_connect = always_connected, }; #endif /* CONFIG_USB_ARMLINUX */ #ifdef CONFIG_USB_ZAURUS #define HAVE_HARDWARE #include <linux/crc32.h> /*------------------------------------------------------------------------- * * Zaurus is also a SA-1110 based PDA, but one using a different driver * (and framing) for its USB slave/gadget controller than the case above. * * For the current version of that driver, the main way that framing is * nonstandard (also from perspective of the CDC ethernet model!) is a * crc32, added to help detect when some sa1100 usb-to-memory DMA errata * haven't been fully worked around. Also, all Zaurii use the same * default Ethernet address. * * PXA based models use the same framing, and also can't implement * set_interface properly. * * All known Zaurii lie about their standards conformance. Most lie by * saying they support CDC Ethernet. Some lie and say they support CDC * MDLM (as if for access to cell phone modems). Someone, please beat * on Sharp (and other such vendors) for a while with a cluestick. * *-------------------------------------------------------------------------*/ static struct sk_buff * zaurus_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags) { int padlen; struct sk_buff *skb2; padlen = 2; if (!skb_cloned (skb)) { int tailroom = skb_tailroom (skb); if ((padlen + 4) <= tailroom) goto done; } skb2 = skb_copy_expand (skb, 0, 4 + padlen, flags); dev_kfree_skb_any (skb); skb = skb2; if (skb) { u32 fcs; done: fcs = crc32_le (~0, skb->data, skb->len); fcs = ~fcs; *skb_put (skb, 1) = fcs & 0xff; *skb_put (skb, 1) = (fcs>> 8) & 0xff; *skb_put (skb, 1) = (fcs>>16) & 0xff; *skb_put (skb, 1) = (fcs>>24) & 0xff; } return skb; } static const struct driver_info zaurus_sl5x00_info = { .description = "Sharp Zaurus SL-5x00", .flags = FLAG_FRAMING_Z, .check_connect = always_connected, .bind = generic_cdc_bind, .unbind = cdc_unbind, .tx_fixup = zaurus_tx_fixup, }; #define ZAURUS_STRONGARM_INFO ((unsigned long)&zaurus_sl5x00_info) static const struct driver_info zaurus_pxa_info = { .description = "Sharp Zaurus, PXA-2xx based", .flags = FLAG_FRAMING_Z, .check_connect = always_connected, .bind = generic_cdc_bind, .unbind = cdc_unbind, .tx_fixup = zaurus_tx_fixup, }; #define ZAURUS_PXA_INFO ((unsigned long)&zaurus_pxa_info) static const struct driver_info olympus_mxl_info = { .description = "Olympus R1000", .flags = FLAG_FRAMING_Z, .check_connect = always_connected, .bind = generic_cdc_bind, .unbind = cdc_unbind, .tx_fixup = zaurus_tx_fixup, }; #define OLYMPUS_MXL_INFO ((unsigned long)&olympus_mxl_info) /* Some more recent products using Lineo/Belcarra code will wrongly claim * CDC MDLM conformance. They aren't conformant: data endpoints live * in the control interface, there's no data interface, and it's not used * to talk to a cell phone radio. But at least we can detect these two * pseudo-classes, rather than growing this product list with entries for * each new nonconformant product (sigh). */ static const u8 safe_guid[16] = { 0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6, 0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f, }; static const u8 blan_guid[16] = { 0x74, 0xf0, 0x3d, 0xbd, 0x1e, 0xc1, 0x44, 0x70, 0xa3, 0x67, 0x71, 0x34, 0xc9, 0xf5, 0x54, 0x37, }; static int blan_mdlm_bind (struct usbnet *dev, struct usb_interface *intf) { u8 *buf = intf->cur_altsetting->extra; int len = intf->cur_altsetting->extralen; struct usb_cdc_mdlm_desc *desc = NULL; struct usb_cdc_mdlm_detail_desc *detail = NULL; while (len > 3) { if (buf [1] != USB_DT_CS_INTERFACE) goto next_desc; /* use bDescriptorSubType, and just verify that we get a * "BLAN" (or "SAFE") descriptor. */ switch (buf [2]) { case USB_CDC_MDLM_TYPE: if (desc) { dev_dbg (&intf->dev, "extra MDLM\n"); goto bad_desc; } desc = (void *) buf; if (desc->bLength != sizeof *desc) { dev_dbg (&intf->dev, "MDLM len %u\n", desc->bLength); goto bad_desc; } /* expect bcdVersion 1.0, ignore */ if (memcmp(&desc->bGUID, blan_guid, 16) && memcmp(&desc->bGUID, safe_guid, 16) ) { /* hey, this one might _really_ be MDLM! */ dev_dbg (&intf->dev, "MDLM guid\n"); goto bad_desc; } break; case USB_CDC_MDLM_DETAIL_TYPE: if (detail) { dev_dbg (&intf->dev, "extra MDLM detail\n"); goto bad_desc; } detail = (void *) buf; switch (detail->bGuidDescriptorType) { case 0: /* "SAFE" */ if (detail->bLength != (sizeof *detail + 2)) goto bad_detail; break; case 1: /* "BLAN" */ if (detail->bLength != (sizeof *detail + 3)) goto bad_detail; break; default: goto bad_detail; } /* assuming we either noticed BLAN already, or will * find it soon, there are some data bytes here: * - bmNetworkCapabilities (unused) * - bmDataCapabilities (bits, see below) * - bPad (ignored, for PADAFTER -- BLAN-only) * bits are: * - 0x01 -- Zaurus framing (add CRC) * - 0x02 -- PADBEFORE (CRC includes some padding) * - 0x04 -- PADAFTER (some padding after CRC) * - 0x08 -- "fermat" packet mangling (for hw bugs) * the PADBEFORE appears not to matter; we interop * with devices that use it and those that don't. */ if ((detail->bDetailData[1] & ~02) != 0x01) { /* bmDataCapabilites == 0 would be fine too, * but framing is minidriver-coupled for now. */ bad_detail: dev_dbg (&intf->dev, "bad MDLM detail, %d %d %d\n", detail->bLength, detail->bDetailData[0], detail->bDetailData[2]); goto bad_desc; } break; } next_desc: len -= buf [0]; /* bLength */ buf += buf [0]; } if (!desc || !detail) { dev_dbg (&intf->dev, "missing cdc mdlm %s%sdescriptor\n", desc ? "" : "func ", detail ? "" : "detail "); goto bad_desc; } /* There's probably a CDC Ethernet descriptor there, but we can't * rely on the Ethernet address it provides since not all vendors * bother to make it unique. Likewise there's no point in tracking * of the CDC event notifications. */ return get_endpoints (dev, intf); bad_desc: dev_info (&dev->udev->dev, "unsupported MDLM descriptors\n"); return -ENODEV; } static const struct driver_info bogus_mdlm_info = { .description = "pseudo-MDLM (BLAN) device", .flags = FLAG_FRAMING_Z, .check_connect = always_connected, .tx_fixup = zaurus_tx_fixup, .bind = blan_mdlm_bind, }; #else /* blacklist all those devices */ #define ZAURUS_STRONGARM_INFO 0 #define ZAURUS_PXA_INFO 0 #define OLYMPUS_MXL_INFO 0 #endif /*------------------------------------------------------------------------- * * Network Device Driver (peer link to "Host Device", from USB host) * *-------------------------------------------------------------------------*/ static int usbnet_change_mtu (struct net_device *net, int new_mtu) { struct usbnet *dev = netdev_priv(net); if (new_mtu <= MIN_PACKET || new_mtu > MAX_PACKET) return -EINVAL; #ifdef CONFIG_USB_NET1080 if (((dev->driver_info->flags) & FLAG_FRAMING_NC)) { if (FRAMED_SIZE (new_mtu) > MAX_PACKET) return -EINVAL; } #endif #ifdef CONFIG_USB_GENESYS if (((dev->driver_info->flags) & FLAG_FRAMING_GL) && new_mtu > GL_MAX_PACKET_LEN) return -EINVAL; #endif // no second zero-length packet read wanted after mtu-sized packets if (((new_mtu + sizeof (struct ethhdr)) % dev->maxpacket) == 0) return -EDOM; net->mtu = new_mtu; return 0; } /*-------------------------------------------------------------------------*/ static struct net_device_stats *usbnet_get_stats (struct net_device *net) { struct usbnet *dev = netdev_priv(net); return &dev->stats; } /*-------------------------------------------------------------------------*/ /* some LK 2.4 HCDs oopsed if we freed or resubmitted urbs from * completion callbacks. 2.5 should have fixed those bugs... */ static void defer_bh (struct usbnet *dev, struct sk_buff *skb) { struct sk_buff_head *list = skb->list; unsigned long flags; spin_lock_irqsave (&list->lock, flags); __skb_unlink (skb, list); spin_unlock (&list->lock); spin_lock (&dev->done.lock); __skb_queue_tail (&dev->done, skb); if (dev->done.qlen == 1) tasklet_schedule (&dev->bh); spin_unlock_irqrestore (&dev->done.lock, flags); } /* some work can't be done in tasklets, so we use keventd * * NOTE: annoying asymmetry: if it's active, schedule_work() fails, * but tasklet_schedule() doesn't. hope the failure is rare. */ static void defer_kevent (struct usbnet *dev, int work) { set_bit (work, &dev->flags); if (!schedule_work (&dev->kevent)) deverr (dev, "kevent %d may have been dropped", work); else devdbg (dev, "kevent %d scheduled", work); } /*-------------------------------------------------------------------------*/ static void rx_complete (struct urb *urb, struct pt_regs *regs); static void rx_submit (struct usbnet *dev, struct urb *urb, int flags) { struct sk_buff *skb; struct skb_data *entry; int retval = 0; unsigned long lockflags; size_t size; #ifdef CONFIG_USB_NET1080 if (dev->driver_info->flags & FLAG_FRAMING_NC) size = FRAMED_SIZE (dev->net->mtu); else #endif #ifdef CONFIG_USB_GENESYS if (dev->driver_info->flags & FLAG_FRAMING_GL) size = GL_RCV_BUF_SIZE; else #endif #ifdef CONFIG_USB_ZAURUS if (dev->driver_info->flags & FLAG_FRAMING_Z) size = 6 + (sizeof (struct ethhdr) + dev->net->mtu); else #endif #ifdef CONFIG_USB_RNDIS if (dev->driver_info->flags & FLAG_FRAMING_RN) size = RNDIS_MAX_TRANSFER; else #endif #ifdef CONFIG_USB_AX8817X if (dev->driver_info->flags & FLAG_FRAMING_AX) size = 2048; else #endif size = (sizeof (struct ethhdr) + dev->net->mtu); if ((skb = alloc_skb (size + NET_IP_ALIGN, flags)) == NULL) { if (netif_msg_rx_err (dev)) devdbg (dev, "no rx skb"); defer_kevent (dev, EVENT_RX_MEMORY); usb_free_urb (urb); return; } skb_reserve (skb, NET_IP_ALIGN); entry = (struct skb_data *) skb->cb; entry->urb = urb; entry->dev = dev; entry->state = rx_start; entry->length = 0; usb_fill_bulk_urb (urb, dev->udev, dev->in, skb->data, size, rx_complete, skb); urb->transfer_flags |= URB_ASYNC_UNLINK; spin_lock_irqsave (&dev->rxq.lock, lockflags); if (netif_running (dev->net) && netif_device_present (dev->net) && !test_bit (EVENT_RX_HALT, &dev->flags)) { switch (retval = usb_submit_urb (urb, GFP_ATOMIC)){ case -EPIPE: defer_kevent (dev, EVENT_RX_HALT); break; case -ENOMEM: defer_kevent (dev, EVENT_RX_MEMORY); break; case -ENODEV: if (netif_msg_ifdown (dev)) devdbg (dev, "device gone"); netif_device_detach (dev->net); break; default: if (netif_msg_rx_err (dev)) devdbg (dev, "rx submit, %d", retval); tasklet_schedule (&dev->bh); break; case 0: __skb_queue_tail (&dev->rxq, skb); } } else { if (netif_msg_ifdown (dev)) devdbg (dev, "rx: stopped"); retval = -ENOLINK; } spin_unlock_irqrestore (&dev->rxq.lock, lockflags); if (retval) { dev_kfree_skb_any (skb); usb_free_urb (urb); } } /*-------------------------------------------------------------------------*/ static inline void rx_process (struct usbnet *dev, struct sk_buff *skb) { if (dev->driver_info->rx_fixup && !dev->driver_info->rx_fixup (dev, skb)) goto error; // else network stack removes extra byte if we forced a short packet if (skb->len) skb_return (dev, skb); else { if (netif_msg_rx_err (dev)) devdbg (dev, "drop"); error: dev->stats.rx_errors++; skb_queue_tail (&dev->done, skb); } } /*-------------------------------------------------------------------------*/ static void rx_complete (struct urb *urb, struct pt_regs *regs) { struct sk_buff *skb = (struct sk_buff *) urb->context; struct skb_data *entry = (struct skb_data *) skb->cb; struct usbnet *dev = entry->dev; int urb_status = urb->status; skb_put (skb, urb->actual_length); entry->state = rx_done; entry->urb = NULL; switch (urb_status) { // success case 0: if (MIN_PACKET > skb->len || skb->len > MAX_PACKET) { entry->state = rx_cleanup; dev->stats.rx_errors++; dev->stats.rx_length_errors++; if (netif_msg_rx_err (dev)) devdbg (dev, "rx length %d", skb->len); } break; // stalls need manual reset. this is rare ... except that // when going through USB 2.0 TTs, unplug appears this way. // we avoid the highspeed version of the ETIMEOUT/EILSEQ // storm, recovering as needed. case -EPIPE: dev->stats.rx_errors++; defer_kevent (dev, EVENT_RX_HALT); // FALLTHROUGH // software-driven interface shutdown case -ECONNRESET: // async unlink case -ESHUTDOWN: // hardware gone if (netif_msg_ifdown (dev)) devdbg (dev, "rx shutdown, code %d", urb_status); goto block; // we get controller i/o faults during khubd disconnect() delays. // throttle down resubmits, to avoid log floods; just temporarily, // so we still recover when the fault isn't a khubd delay. case -EPROTO: // ehci case -ETIMEDOUT: // ohci case -EILSEQ: // uhci dev->stats.rx_errors++; if (!timer_pending (&dev->delay)) { mod_timer (&dev->delay, jiffies + THROTTLE_JIFFIES); if (netif_msg_link (dev)) devdbg (dev, "rx throttle %d", urb_status); } block: entry->state = rx_cleanup; entry->urb = urb; urb = NULL; break; // data overrun ... flush fifo? case -EOVERFLOW: dev->stats.rx_over_errors++; // FALLTHROUGH default: entry->state = rx_cleanup; dev->stats.rx_errors++; if (netif_msg_rx_err (dev)) devdbg (dev, "rx status %d", urb_status); break; } defer_bh (dev, skb); if (urb) { if (netif_running (dev->net) && !test_bit (EVENT_RX_HALT, &dev->flags)) { rx_submit (dev, urb, GFP_ATOMIC); return; } usb_free_urb (urb); } if (netif_msg_rx_err (dev)) devdbg (dev, "no read resubmitted"); } static void intr_complete (struct urb *urb, struct pt_regs *regs) { struct usbnet *dev = urb->context; int status = urb->status; switch (status) { /* success */ case 0: dev->driver_info->status(dev, urb); break; /* software-driven interface shutdown */ case -ENOENT: // urb killed case -ESHUTDOWN: // hardware gone if (netif_msg_ifdown (dev)) devdbg (dev, "intr shutdown, code %d", status); return; /* NOTE: not throttling like RX/TX, since this endpoint * already polls infrequently */ default: devdbg (dev, "intr status %d", status); break; } if (!netif_running (dev->net)) return; memset(urb->transfer_buffer, 0, urb->transfer_buffer_length); status = usb_submit_urb (urb, GFP_ATOMIC); if (status != 0 && netif_msg_timer (dev)) deverr(dev, "intr resubmit --> %d", status); } /*-------------------------------------------------------------------------*/ // unlink pending rx/tx; completion handlers do all other cleanup static int unlink_urbs (struct usbnet *dev, struct sk_buff_head *q) { unsigned long flags; struct sk_buff *skb, *skbnext; int count = 0; spin_lock_irqsave (&q->lock, flags); for (skb = q->next; skb != (struct sk_buff *) q; skb = skbnext) { struct skb_data *entry; struct urb *urb; int retval; entry = (struct skb_data *) skb->cb; urb = entry->urb; skbnext = skb->next; // during some PM-driven resume scenarios, // these (async) unlinks complete immediately retval = usb_unlink_urb (urb); if (retval != -EINPROGRESS && retval != 0) devdbg (dev, "unlink urb err, %d", retval); else count++; } spin_unlock_irqrestore (&q->lock, flags); return count; } /*-------------------------------------------------------------------------*/ // precondition: never called in_interrupt static int usbnet_stop (struct net_device *net) { struct usbnet *dev = netdev_priv(net); int temp; DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup); DECLARE_WAITQUEUE (wait, current); netif_stop_queue (net); if (netif_msg_ifdown (dev)) devinfo (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld", dev->stats.rx_packets, dev->stats.tx_packets, dev->stats.rx_errors, dev->stats.tx_errors ); // ensure there are no more active urbs add_wait_queue (&unlink_wakeup, &wait); dev->wait = &unlink_wakeup; temp = unlink_urbs (dev, &dev->txq) + unlink_urbs (dev, &dev->rxq); // maybe wait for deletions to finish. while (!skb_queue_empty(&dev->rxq) && !skb_queue_empty(&dev->txq) && !skb_queue_empty(&dev->done)) { msleep(UNLINK_TIMEOUT_MS); if (netif_msg_ifdown (dev)) devdbg (dev, "waited for %d urb completions", temp); } dev->wait = NULL; remove_wait_queue (&unlink_wakeup, &wait); usb_kill_urb(dev->interrupt); /* deferred work (task, timer, softirq) must also stop. * can't flush_scheduled_work() until we drop rtnl (later), * else workers could deadlock; so make workers a NOP. */ dev->flags = 0; del_timer_sync (&dev->delay); tasklet_kill (&dev->bh); return 0; } /*-------------------------------------------------------------------------*/ // posts reads, and enables write queuing // precondition: never called in_interrupt static int usbnet_open (struct net_device *net) { struct usbnet *dev = netdev_priv(net); int retval = 0; struct driver_info *info = dev->driver_info; // put into "known safe" state if (info->reset && (retval = info->reset (dev)) < 0) { if (netif_msg_ifup (dev)) devinfo (dev, "open reset fail (%d) usbnet usb-%s-%s, %s", retval, dev->udev->bus->bus_name, dev->udev->devpath, info->description); goto done; } // insist peer be connected if (info->check_connect && (retval = info->check_connect (dev)) < 0) { if (netif_msg_ifup (dev)) devdbg (dev, "can't open; %d", retval); goto done; } /* start any status interrupt transfer */ if (dev->interrupt) { retval = usb_submit_urb (dev->interrupt, GFP_KERNEL); if (retval < 0) { if (netif_msg_ifup (dev)) deverr (dev, "intr submit %d", retval); goto done; } } netif_start_queue (net); if (netif_msg_ifup (dev)) { char *framing; if (dev->driver_info->flags & FLAG_FRAMING_NC) framing = "NetChip"; else if (dev->driver_info->flags & FLAG_FRAMING_GL) framing = "GeneSys"; else if (dev->driver_info->flags & FLAG_FRAMING_Z) framing = "Zaurus"; else if (dev->driver_info->flags & FLAG_FRAMING_RN) framing = "RNDIS"; else if (dev->driver_info->flags & FLAG_FRAMING_AX) framing = "ASIX"; else framing = "simple"; devinfo (dev, "open: enable queueing " "(rx %d, tx %d) mtu %d %s framing", RX_QLEN (dev), TX_QLEN (dev), dev->net->mtu, framing); } // delay posting reads until we're fully open tasklet_schedule (&dev->bh); done: return retval; } /*-------------------------------------------------------------------------*/ static void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info) { struct usbnet *dev = netdev_priv(net); strncpy (info->driver, driver_name, sizeof info->driver); strncpy (info->version, DRIVER_VERSION, sizeof info->version); strncpy (info->fw_version, dev->driver_info->description, sizeof info->fw_version); usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info); } static u32 usbnet_get_link (struct net_device *net) { struct usbnet *dev = netdev_priv(net); /* If a check_connect is defined, return it's results */ if (dev->driver_info->check_connect) return dev->driver_info->check_connect (dev) == 0; /* Otherwise, we're up to avoid breaking scripts */ return 1; } static u32 usbnet_get_msglevel (struct net_device *net) { struct usbnet *dev = netdev_priv(net); return dev->msg_enable; } static void usbnet_set_msglevel (struct net_device *net, u32 level) { struct usbnet *dev = netdev_priv(net); dev->msg_enable = level; } static int usbnet_ioctl (struct net_device *net, struct ifreq *rq, int cmd) { #ifdef NEED_MII { struct usbnet *dev = netdev_priv(net); if (dev->mii.mdio_read != NULL && dev->mii.mdio_write != NULL) return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); } #endif return -EOPNOTSUPP; } /*-------------------------------------------------------------------------*/ /* work that cannot be done in interrupt context uses keventd. * * NOTE: with 2.5 we could do more of this using completion callbacks, * especially now that control transfers can be queued. */ static void kevent (void *data) { struct usbnet *dev = data; int status; /* usb_clear_halt() needs a thread context */ if (test_bit (EVENT_TX_HALT, &dev->flags)) { unlink_urbs (dev, &dev->txq); status = usb_clear_halt (dev->udev, dev->out); if (status < 0 && status != -EPIPE) { if (netif_msg_tx_err (dev)) deverr (dev, "can't clear tx halt, status %d", status); } else { clear_bit (EVENT_TX_HALT, &dev->flags); netif_wake_queue (dev->net); } } if (test_bit (EVENT_RX_HALT, &dev->flags)) { unlink_urbs (dev, &dev->rxq); status = usb_clear_halt (dev->udev, dev->in); if (status < 0 && status != -EPIPE) { if (netif_msg_rx_err (dev)) deverr (dev, "can't clear rx halt, status %d", status); } else { clear_bit (EVENT_RX_HALT, &dev->flags); tasklet_schedule (&dev->bh); } } /* tasklet could resubmit itself forever if memory is tight */ if (test_bit (EVENT_RX_MEMORY, &dev->flags)) { struct urb *urb = NULL; if (netif_running (dev->net)) urb = usb_alloc_urb (0, GFP_KERNEL); else clear_bit (EVENT_RX_MEMORY, &dev->flags); if (urb != NULL) { clear_bit (EVENT_RX_MEMORY, &dev->flags); rx_submit (dev, urb, GFP_KERNEL); tasklet_schedule (&dev->bh); } } if (test_bit (EVENT_LINK_RESET, &dev->flags)) { struct driver_info *info = dev->driver_info; int retval = 0; clear_bit (EVENT_LINK_RESET, &dev->flags); if(info->link_reset && (retval = info->link_reset(dev)) < 0) { devinfo(dev, "link reset failed (%d) usbnet usb-%s-%s, %s", retval, dev->udev->bus->bus_name, dev->udev->devpath, info->description); } } if (dev->flags) devdbg (dev, "kevent done, flags = 0x%lx", dev->flags); } /*-------------------------------------------------------------------------*/ static void tx_complete (struct urb *urb, struct pt_regs *regs) { struct sk_buff *skb = (struct sk_buff *) urb->context; struct skb_data *entry = (struct skb_data *) skb->cb; struct usbnet *dev = entry->dev; if (urb->status == 0) { dev->stats.tx_packets++; dev->stats.tx_bytes += entry->length; } else { dev->stats.tx_errors++; switch (urb->status) { case -EPIPE: defer_kevent (dev, EVENT_TX_HALT); break; /* software-driven interface shutdown */ case -ECONNRESET: // async unlink case -ESHUTDOWN: // hardware gone break; // like rx, tx gets controller i/o faults during khubd delays // and so it uses the same throttling mechanism. case -EPROTO: // ehci case -ETIMEDOUT: // ohci case -EILSEQ: // uhci if (!timer_pending (&dev->delay)) { mod_timer (&dev->delay, jiffies + THROTTLE_JIFFIES); if (netif_msg_link (dev)) devdbg (dev, "tx throttle %d", urb->status); } netif_stop_queue (dev->net); break; default: if (netif_msg_tx_err (dev)) devdbg (dev, "tx err %d", entry->urb->status); break; } } urb->dev = NULL; entry->state = tx_done; defer_bh (dev, skb); } /*-------------------------------------------------------------------------*/ static void usbnet_tx_timeout (struct net_device *net) { struct usbnet *dev = netdev_priv(net); unlink_urbs (dev, &dev->txq); tasklet_schedule (&dev->bh); // FIXME: device recovery -- reset? } /*-------------------------------------------------------------------------*/ static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net) { struct usbnet *dev = netdev_priv(net); int length; int retval = NET_XMIT_SUCCESS; struct urb *urb = NULL; struct skb_data *entry; struct driver_info *info = dev->driver_info; unsigned long flags; #ifdef CONFIG_USB_NET1080 struct nc_header *header = NULL; struct nc_trailer *trailer = NULL; #endif /* CONFIG_USB_NET1080 */ // some devices want funky USB-level framing, for // win32 driver (usually) and/or hardware quirks if (info->tx_fixup) { skb = info->tx_fixup (dev, skb, GFP_ATOMIC); if (!skb) { if (netif_msg_tx_err (dev)) devdbg (dev, "can't tx_fixup skb"); goto drop; } } length = skb->len; if (!(urb = usb_alloc_urb (0, GFP_ATOMIC))) { if (netif_msg_tx_err (dev)) devdbg (dev, "no urb"); goto drop; } entry = (struct skb_data *) skb->cb; entry->urb = urb; entry->dev = dev; entry->state = tx_start; entry->length = length; // FIXME: reorganize a bit, so that fixup() fills out NetChip // framing too. (Packet ID update needs the spinlock...) // [ BETTER: we already own net->xmit_lock, that's enough ] #ifdef CONFIG_USB_NET1080 if (info->flags & FLAG_FRAMING_NC) { header = (struct nc_header *) skb_push (skb, sizeof *header); header->hdr_len = cpu_to_le16 (sizeof (*header)); header->packet_len = cpu_to_le16 (length); if (!((skb->len + sizeof *trailer) & 0x01)) *skb_put (skb, 1) = PAD_BYTE; trailer = (struct nc_trailer *) skb_put (skb, sizeof *trailer); } #endif /* CONFIG_USB_NET1080 */ usb_fill_bulk_urb (urb, dev->udev, dev->out, skb->data, skb->len, tx_complete, skb); urb->transfer_flags |= URB_ASYNC_UNLINK; /* don't assume the hardware handles USB_ZERO_PACKET * NOTE: strictly conforming cdc-ether devices should expect * the ZLP here, but ignore the one-byte packet. * * FIXME zero that byte, if it doesn't require a new skb. */ if ((length % dev->maxpacket) == 0) urb->transfer_buffer_length++; spin_lock_irqsave (&dev->txq.lock, flags); #ifdef CONFIG_USB_NET1080 if (info->flags & FLAG_FRAMING_NC) { header->packet_id = cpu_to_le16 ((u16)dev->dev_packet_id++); put_unaligned (header->packet_id, &trailer->packet_id); #if 0 devdbg (dev, "frame >tx h %d p %d id %d", header->hdr_len, header->packet_len, header->packet_id); #endif } #endif /* CONFIG_USB_NET1080 */ switch ((retval = usb_submit_urb (urb, GFP_ATOMIC))) { case -EPIPE: netif_stop_queue (net); defer_kevent (dev, EVENT_TX_HALT); break; default: if (netif_msg_tx_err (dev)) devdbg (dev, "tx: submit urb err %d", retval); break; case 0: net->trans_start = jiffies; __skb_queue_tail (&dev->txq, skb); if (dev->txq.qlen >= TX_QLEN (dev)) netif_stop_queue (net); } spin_unlock_irqrestore (&dev->txq.lock, flags); if (retval) { if (netif_msg_tx_err (dev)) devdbg (dev, "drop, code %d", retval); drop: retval = NET_XMIT_SUCCESS; dev->stats.tx_dropped++; if (skb) dev_kfree_skb_any (skb); usb_free_urb (urb); } else if (netif_msg_tx_queued (dev)) { devdbg (dev, "> tx, len %d, type 0x%x", length, skb->protocol); } return retval; } /*-------------------------------------------------------------------------*/ // tasklet (work deferred from completions, in_irq) or timer static void usbnet_bh (unsigned long param) { struct usbnet *dev = (struct usbnet *) param; struct sk_buff *skb; struct skb_data *entry; while ((skb = skb_dequeue (&dev->done))) { entry = (struct skb_data *) skb->cb; switch (entry->state) { case rx_done: entry->state = rx_cleanup; rx_process (dev, skb); continue; case tx_done: case rx_cleanup: usb_free_urb (entry->urb); dev_kfree_skb (skb); continue; default: devdbg (dev, "bogus skb state %d", entry->state); } } // waiting for all pending urbs to complete? if (dev->wait) { if ((dev->txq.qlen + dev->rxq.qlen + dev->done.qlen) == 0) { wake_up (dev->wait); } // or are we maybe short a few urbs? } else if (netif_running (dev->net) && netif_device_present (dev->net) && !timer_pending (&dev->delay) && !test_bit (EVENT_RX_HALT, &dev->flags)) { int temp = dev->rxq.qlen; int qlen = RX_QLEN (dev); if (temp < qlen) { struct urb *urb; int i; // don't refill the queue all at once for (i = 0; i < 10 && dev->rxq.qlen < qlen; i++) { urb = usb_alloc_urb (0, GFP_ATOMIC); if (urb != NULL) rx_submit (dev, urb, GFP_ATOMIC); } if (temp != dev->rxq.qlen && netif_msg_link (dev)) devdbg (dev, "rxqlen %d --> %d", temp, dev->rxq.qlen); if (dev->rxq.qlen < qlen) tasklet_schedule (&dev->bh); } if (dev->txq.qlen < TX_QLEN (dev)) netif_wake_queue (dev->net); } } /*------------------------------------------------------------------------- * * USB Device Driver support * *-------------------------------------------------------------------------*/ // precondition: never called in_interrupt static void usbnet_disconnect (struct usb_interface *intf) { struct usbnet *dev; struct usb_device *xdev; struct net_device *net; dev = usb_get_intfdata(intf); usb_set_intfdata(intf, NULL); if (!dev) return; xdev = interface_to_usbdev (intf); if (netif_msg_probe (dev)) devinfo (dev, "unregister usbnet usb-%s-%s, %s", xdev->bus->bus_name, xdev->devpath, dev->driver_info->description); net = dev->net; unregister_netdev (net); /* we don't hold rtnl here ... */ flush_scheduled_work (); if (dev->driver_info->unbind) dev->driver_info->unbind (dev, intf); free_netdev(net); usb_put_dev (xdev); } /*-------------------------------------------------------------------------*/ static struct ethtool_ops usbnet_ethtool_ops; // precondition: never called in_interrupt static int usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod) { struct usbnet *dev; struct net_device *net; struct usb_host_interface *interface; struct driver_info *info; struct usb_device *xdev; int status; info = (struct driver_info *) prod->driver_info; if (!info) { dev_dbg (&udev->dev, "blacklisted by %s\n", driver_name); return -ENODEV; } xdev = interface_to_usbdev (udev); interface = udev->cur_altsetting; usb_get_dev (xdev); status = -ENOMEM; // set up our own records net = alloc_etherdev(sizeof(*dev)); if (!net) { dbg ("can't kmalloc dev"); goto out; } dev = netdev_priv(net); dev->udev = xdev; dev->driver_info = info; dev->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK); skb_queue_head_init (&dev->rxq); skb_queue_head_init (&dev->txq); skb_queue_head_init (&dev->done); dev->bh.func = usbnet_bh; dev->bh.data = (unsigned long) dev; INIT_WORK (&dev->kevent, kevent, dev); dev->delay.function = usbnet_bh; dev->delay.data = (unsigned long) dev; init_timer (&dev->delay); SET_MODULE_OWNER (net); dev->net = net; strcpy (net->name, "usb%d"); memcpy (net->dev_addr, node_id, sizeof node_id); #if 0 // dma_supported() is deeply broken on almost all architectures // possible with some EHCI controllers if (dma_supported (&udev->dev, DMA_64BIT_MASK)) net->features |= NETIF_F_HIGHDMA; #endif net->change_mtu = usbnet_change_mtu; net->get_stats = usbnet_get_stats; net->hard_start_xmit = usbnet_start_xmit; net->open = usbnet_open; net->stop = usbnet_stop; net->watchdog_timeo = TX_TIMEOUT_JIFFIES; net->tx_timeout = usbnet_tx_timeout; net->do_ioctl = usbnet_ioctl; net->ethtool_ops = &usbnet_ethtool_ops; // allow device-specific bind/init procedures // NOTE net->name still not usable ... if (info->bind) { status = info->bind (dev, udev); // heuristic: "usb%d" for links we know are two-host, // else "eth%d" when there's reasonable doubt. userspace // can rename the link if it knows better. if ((dev->driver_info->flags & FLAG_ETHER) != 0 && (net->dev_addr [0] & 0x02) == 0) strcpy (net->name, "eth%d"); } else if (!info->in || info->out) status = get_endpoints (dev, udev); else { dev->in = usb_rcvbulkpipe (xdev, info->in); dev->out = usb_sndbulkpipe (xdev, info->out); if (!(info->flags & FLAG_NO_SETINT)) status = usb_set_interface (xdev, interface->desc.bInterfaceNumber, interface->desc.bAlternateSetting); else status = 0; } if (status == 0 && dev->status) status = init_status (dev, udev); if (status < 0) goto out1; dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1); SET_NETDEV_DEV(net, &udev->dev); status = register_netdev (net); if (status) goto out3; if (netif_msg_probe (dev)) devinfo (dev, "register usbnet at usb-%s-%s, %s, " "%02x:%02x:%02x:%02x:%02x:%02x", xdev->bus->bus_name, xdev->devpath, dev->driver_info->description, net->dev_addr [0], net->dev_addr [1], net->dev_addr [2], net->dev_addr [3], net->dev_addr [4], net->dev_addr [5]); // ok, it's ready to go. usb_set_intfdata (udev, dev); // start as if the link is up netif_device_attach (net); return 0; out3: if (info->unbind) info->unbind (dev, udev); out1: free_netdev(net); out: usb_put_dev(xdev); return status; } /*-------------------------------------------------------------------------*/ #ifdef CONFIG_PM static int usbnet_suspend (struct usb_interface *intf, pm_message_t message) { struct usbnet *dev = usb_get_intfdata(intf); /* accelerate emptying of the rx and queues, to avoid * having everything error out. */ netif_device_detach (dev->net); (void) unlink_urbs (dev, &dev->rxq); (void) unlink_urbs (dev, &dev->txq); intf->dev.power.power_state = PMSG_SUSPEND; return 0; } static int usbnet_resume (struct usb_interface *intf) { struct usbnet *dev = usb_get_intfdata(intf); intf->dev.power.power_state = PMSG_ON; netif_device_attach (dev->net); tasklet_schedule (&dev->bh); return 0; } #else /* !CONFIG_PM */ #define usbnet_suspend NULL #define usbnet_resume NULL #endif /* CONFIG_PM */ /*-------------------------------------------------------------------------*/ #ifndef HAVE_HARDWARE #error You need to configure some hardware for this driver #endif /* * chip vendor names won't normally be on the cables, and * may not be on the device. */ static const struct usb_device_id products [] = { #ifdef CONFIG_USB_ALI_M5632 { USB_DEVICE (0x0402, 0x5632), // ALi defaults .driver_info = (unsigned long) &ali_m5632_info, }, #endif #ifdef CONFIG_USB_AN2720 { USB_DEVICE (0x0547, 0x2720), // AnchorChips defaults .driver_info = (unsigned long) &an2720_info, }, { USB_DEVICE (0x0547, 0x2727), // Xircom PGUNET .driver_info = (unsigned long) &an2720_info, }, #endif #ifdef CONFIG_USB_BELKIN { USB_DEVICE (0x050d, 0x0004), // Belkin .driver_info = (unsigned long) &belkin_info, }, { USB_DEVICE (0x056c, 0x8100), // eTEK .driver_info = (unsigned long) &belkin_info, }, { USB_DEVICE (0x0525, 0x9901), // Advance USBNET (eTEK) .driver_info = (unsigned long) &belkin_info, }, #endif #ifdef CONFIG_USB_AX8817X { // Linksys USB200M USB_DEVICE (0x077b, 0x2226), .driver_info = (unsigned long) &ax8817x_info, }, { // Netgear FA120 USB_DEVICE (0x0846, 0x1040), .driver_info = (unsigned long) &netgear_fa120_info, }, { // DLink DUB-E100 USB_DEVICE (0x2001, 0x1a00), .driver_info = (unsigned long) &dlink_dub_e100_info, }, { // Intellinet, ST Lab USB Ethernet USB_DEVICE (0x0b95, 0x1720), .driver_info = (unsigned long) &ax8817x_info, }, { // Hawking UF200, TrendNet TU2-ET100 USB_DEVICE (0x07b8, 0x420a), .driver_info = (unsigned long) &hawking_uf200_info, }, { // Billionton Systems, USB2AR USB_DEVICE (0x08dd, 0x90ff), .driver_info = (unsigned long) &ax8817x_info, }, { // ATEN UC210T USB_DEVICE (0x0557, 0x2009), .driver_info = (unsigned long) &ax8817x_info, }, { // Buffalo LUA-U2-KTX USB_DEVICE (0x0411, 0x003d), .driver_info = (unsigned long) &ax8817x_info, }, { // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter" USB_DEVICE (0x6189, 0x182d), .driver_info = (unsigned long) &ax8817x_info, }, { // corega FEther USB2-TX USB_DEVICE (0x07aa, 0x0017), .driver_info = (unsigned long) &ax8817x_info, }, { // Surecom EP-1427X-2 USB_DEVICE (0x1189, 0x0893), .driver_info = (unsigned long) &ax8817x_info, }, { // goodway corp usb gwusb2e USB_DEVICE (0x1631, 0x6200), .driver_info = (unsigned long) &ax8817x_info, }, { // ASIX AX88772 10/100 USB_DEVICE (0x0b95, 0x7720), .driver_info = (unsigned long) &ax88772_info, }, #endif #ifdef CONFIG_USB_EPSON2888 { USB_DEVICE (0x0525, 0x2888), // EPSON USB client .driver_info = (unsigned long) &epson2888_info, }, #endif #ifdef CONFIG_USB_GENESYS { USB_DEVICE (0x05e3, 0x0502), // GL620USB-A .driver_info = (unsigned long) &genelink_info, }, /* NOT: USB_DEVICE (0x05e3, 0x0501), // GL620USB * that's half duplex, not currently supported */ #endif #ifdef CONFIG_USB_NET1080 { USB_DEVICE (0x0525, 0x1080), // NetChip ref design .driver_info = (unsigned long) &net1080_info, }, { USB_DEVICE (0x06D0, 0x0622), // Laplink Gold .driver_info = (unsigned long) &net1080_info, }, #endif #ifdef CONFIG_USB_PL2301 { USB_DEVICE (0x067b, 0x0000), // PL-2301 .driver_info = (unsigned long) &prolific_info, }, { USB_DEVICE (0x067b, 0x0001), // PL-2302 .driver_info = (unsigned long) &prolific_info, }, #endif #ifdef CONFIG_USB_KC2190 { USB_DEVICE (0x050f, 0x0190), // KC-190 .driver_info = (unsigned long) &kc2190_info, }, #endif #ifdef CONFIG_USB_RNDIS { /* RNDIS is MSFT's un-official variant of CDC ACM */ USB_INTERFACE_INFO (USB_CLASS_COMM, 2 /* ACM */, 0x0ff), .driver_info = (unsigned long) &rndis_info, }, #endif #ifdef CONFIG_USB_ARMLINUX /* * SA-1100 using standard ARM Linux kernels, or compatible. * Often used when talking to Linux PDAs (iPaq, Yopy, etc). * The sa-1100 "usb-eth" driver handles the basic framing. * * PXA25x or PXA210 ... these use a "usb-eth" driver much like * the sa1100 one, but hardware uses different endpoint numbers. * * Or the Linux "Ethernet" gadget on hardware that can't talk * CDC Ethernet (e.g., no altsettings), in either of two modes: * - acting just like the old "usb-eth" firmware, though * the implementation is different * - supporting RNDIS as the first/default configuration for * MS-Windows interop; Linux needs to use the other config */ { // 1183 = 0x049F, both used as hex values? // Compaq "Itsy" vendor/product id USB_DEVICE (0x049F, 0x505A), // usb-eth, or compatible .driver_info = (unsigned long) &linuxdev_info, }, { USB_DEVICE (0x0E7E, 0x1001), // G.Mate "Yopy" .driver_info = (unsigned long) &yopy_info, }, { USB_DEVICE (0x8086, 0x07d3), // "blob" bootloader .driver_info = (unsigned long) &blob_info, }, { // Linux Ethernet/RNDIS gadget on pxa210/25x/26x // e.g. Gumstix, current OpenZaurus, ... USB_DEVICE_VER (0x0525, 0xa4a2, 0x0203, 0x0203), .driver_info = (unsigned long) &linuxdev_info, }, #endif #if defined(CONFIG_USB_ZAURUS) || defined(CONFIG_USB_CDCETHER) /* * SA-1100 based Sharp Zaurus ("collie"), or compatible. * Same idea as above, but different framing. * * PXA-2xx based models are also lying-about-cdc. * Some models don't even tell the same lies ... * * NOTE: OpenZaurus versions with 2.6 kernels won't use these entries, * unlike the older ones with 2.4 "embedix" kernels. * * NOTE: These entries do double-duty, serving as blacklist entries * whenever Zaurus support isn't enabled, but CDC Ethernet is. */ #define ZAURUS_MASTER_INTERFACE \ .bInterfaceClass = USB_CLASS_COMM, \ .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \ .bInterfaceProtocol = USB_CDC_PROTO_NONE { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x04DD, .idProduct = 0x8004, ZAURUS_MASTER_INTERFACE, .driver_info = ZAURUS_STRONGARM_INFO, }, { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x04DD, .idProduct = 0x8005, /* A-300 */ ZAURUS_MASTER_INTERFACE, .driver_info = ZAURUS_PXA_INFO, }, { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x04DD, .idProduct = 0x8006, /* B-500/SL-5600 */ ZAURUS_MASTER_INTERFACE, .driver_info = ZAURUS_PXA_INFO, }, { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x04DD, .idProduct = 0x8007, /* C-700 */ ZAURUS_MASTER_INTERFACE, .driver_info = ZAURUS_PXA_INFO, }, { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x04DD, .idProduct = 0x9031, /* C-750 C-760 */ ZAURUS_MASTER_INTERFACE, .driver_info = ZAURUS_PXA_INFO, }, { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x04DD, .idProduct = 0x9032, /* SL-6000 */ ZAURUS_MASTER_INTERFACE, .driver_info = ZAURUS_PXA_INFO, }, { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x04DD, /* reported with some C860 units */ .idProduct = 0x9050, /* C-860 */ ZAURUS_MASTER_INTERFACE, .driver_info = ZAURUS_PXA_INFO, }, #ifdef CONFIG_USB_ZAURUS /* At least some (reports vary) PXA units have very different lies * about their standards support: they claim to be cell phones with * direct access to their radios. (They don't conform to CDC MDLM.) */ { USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE), .driver_info = (unsigned long) &bogus_mdlm_info, }, #endif /* Olympus has some models with a Zaurus-compatible option. * R-1000 uses a FreeScale i.MXL cpu (ARMv4T) */ { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x07B4, .idProduct = 0x0F02, /* R-1000 */ ZAURUS_MASTER_INTERFACE, .driver_info = OLYMPUS_MXL_INFO, }, #endif #ifdef CONFIG_USB_CDCETHER { /* CDC Ether uses two interfaces, not necessarily consecutive. * We match the main interface, ignoring the optional device * class so we could handle devices that aren't exclusively * CDC ether. * * NOTE: this match must come AFTER entries working around * bugs/quirks in a given product (like Zaurus, above). */ USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), .driver_info = (unsigned long) &cdc_info, }, #endif { }, // END }; MODULE_DEVICE_TABLE (usb, products); static struct usb_driver usbnet_driver = { .owner = THIS_MODULE, .name = driver_name, .id_table = products, .probe = usbnet_probe, .disconnect = usbnet_disconnect, .suspend = usbnet_suspend, .resume = usbnet_resume, }; /* Default ethtool_ops assigned. Devices can override in their bind() routine */ static struct ethtool_ops usbnet_ethtool_ops = { .get_drvinfo = usbnet_get_drvinfo, .get_link = usbnet_get_link, .get_msglevel = usbnet_get_msglevel, .set_msglevel = usbnet_set_msglevel, }; /*-------------------------------------------------------------------------*/ static int __init usbnet_init (void) { // compiler should optimize these out BUG_ON (sizeof (((struct sk_buff *)0)->cb) < sizeof (struct skb_data)); #ifdef CONFIG_USB_CDCETHER BUG_ON ((sizeof (((struct usbnet *)0)->data) < sizeof (struct cdc_state))); #endif random_ether_addr(node_id); return usb_register(&usbnet_driver); } module_init (usbnet_init); static void __exit usbnet_exit (void) { usb_deregister (&usbnet_driver); } module_exit (usbnet_exit); MODULE_AUTHOR ("David Brownell <dbrownell@users.sourceforge.net>"); MODULE_DESCRIPTION ("USB Host-to-Host Link Drivers (numerous vendors)"); MODULE_LICENSE ("GPL");