/**************************************************************** * * kaweth.c - driver for KL5KUSB101 based USB->Ethernet * * (c) 2000 Interlan Communications * (c) 2000 Stephane Alnet * (C) 2001 Brad Hards * (C) 2002 Oliver Neukum * * Original author: The Zapman <zapman@interlan.net> * Inspired by, and much credit goes to Michael Rothwell * <rothwell@interlan.net> for the test equipment, help, and patience * Based off of (and with thanks to) Petko Manolov's pegaus.c driver. * Also many thanks to Joel Silverman and Ed Surprenant at Kawasaki * for providing the firmware and driver resources. * * 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, 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. * ****************************************************************/ /* TODO: * Fix in_interrupt() problem * Develop test procedures for USB net interfaces * Run test procedures * Fix bugs from previous two steps * Snoop other OSs for any tricks we're not doing * SMP locking * Reduce arbitrary timeouts * Smart multicast support * Temporary MAC change support * Tunable SOFs parameter - ioctl()? * Ethernet stats collection * Code formatting improvements */ #include <linux/module.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/usb.h> #include <linux/types.h> #include <linux/ethtool.h> #include <linux/pci.h> #include <linux/dma-mapping.h> #include <linux/wait.h> #include <asm/uaccess.h> #include <asm/semaphore.h> #include <asm/byteorder.h> #undef DEBUG #ifdef DEBUG #define kaweth_dbg(format, arg...) printk(KERN_DEBUG __FILE__ ": " format "\n" ,##arg) #else #define kaweth_dbg(format, arg...) do {} while (0) #endif #define kaweth_err(format, arg...) printk(KERN_ERR __FILE__ ": " format "\n" ,##arg) #define kaweth_info(format, arg...) printk(KERN_INFO __FILE__ ": " format "\n" , ##arg) #define kaweth_warn(format, arg...) printk(KERN_WARNING __FILE__ ": " format "\n" , ##arg) #include "kawethfw.h" #define KAWETH_MTU 1514 #define KAWETH_BUF_SIZE 1664 #define KAWETH_TX_TIMEOUT (5 * HZ) #define KAWETH_SCRATCH_SIZE 32 #define KAWETH_FIRMWARE_BUF_SIZE 4096 #define KAWETH_CONTROL_TIMEOUT (30 * HZ) #define KAWETH_STATUS_BROKEN 0x0000001 #define KAWETH_STATUS_CLOSING 0x0000002 #define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01 #define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02 #define KAWETH_PACKET_FILTER_DIRECTED 0x04 #define KAWETH_PACKET_FILTER_BROADCAST 0x08 #define KAWETH_PACKET_FILTER_MULTICAST 0x10 /* Table 7 */ #define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00 #define KAWETH_COMMAND_MULTICAST_FILTERS 0x01 #define KAWETH_COMMAND_SET_PACKET_FILTER 0x02 #define KAWETH_COMMAND_STATISTICS 0x03 #define KAWETH_COMMAND_SET_TEMP_MAC 0x06 #define KAWETH_COMMAND_GET_TEMP_MAC 0x07 #define KAWETH_COMMAND_SET_URB_SIZE 0x08 #define KAWETH_COMMAND_SET_SOFS_WAIT 0x09 #define KAWETH_COMMAND_SCAN 0xFF #define KAWETH_SOFS_TO_WAIT 0x05 #define INTBUFFERSIZE 4 #define STATE_OFFSET 0 #define STATE_MASK 0x40 #define STATE_SHIFT 5 MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr>, Brad Hards <bhards@bigpond.net.au> and Oliver Neukum <oliver@neukum.org>"); MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver"); MODULE_LICENSE("GPL"); static const char driver_name[] = "kaweth"; static int kaweth_probe( struct usb_interface *intf, const struct usb_device_id *id /* from id_table */ ); static void kaweth_disconnect(struct usb_interface *intf); static int kaweth_internal_control_msg(struct usb_device *usb_dev, unsigned int pipe, struct usb_ctrlrequest *cmd, void *data, int len, int timeout); /**************************************************************** * usb_device_id ****************************************************************/ static struct usb_device_id usb_klsi_table[] = { { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */ { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */ { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */ { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */ { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */ { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */ { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */ { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */ { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */ { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */ { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */ { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */ { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */ { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */ { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */ { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */ { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */ { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */ { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */ { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */ { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */ { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */ { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */ { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */ { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */ { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */ { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */ { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */ { USB_DEVICE(0x1485, 0x0002) }, /* Psion Dacom Gold Port Ethernet */ { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */ { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */ { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */ { USB_DEVICE(0x1668, 0x0323) }, /* Actiontec USB Ethernet */ { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */ {} /* Null terminator */ }; MODULE_DEVICE_TABLE (usb, usb_klsi_table); /**************************************************************** * kaweth_driver ****************************************************************/ static struct usb_driver kaweth_driver = { .name = driver_name, .probe = kaweth_probe, .disconnect = kaweth_disconnect, .id_table = usb_klsi_table, }; typedef __u8 eth_addr_t[6]; /**************************************************************** * usb_eth_dev ****************************************************************/ struct usb_eth_dev { char *name; __u16 vendor; __u16 device; void *pdata; }; /**************************************************************** * kaweth_ethernet_configuration * Refer Table 8 ****************************************************************/ struct kaweth_ethernet_configuration { __u8 size; __u8 reserved1; __u8 reserved2; eth_addr_t hw_addr; __u32 statistics_mask; __le16 segment_size; __u16 max_multicast_filters; __u8 reserved3; } __attribute__ ((packed)); /**************************************************************** * kaweth_device ****************************************************************/ struct kaweth_device { spinlock_t device_lock; __u32 status; int end; int suspend_lowmem_rx; int suspend_lowmem_ctrl; int linkstate; struct work_struct lowmem_work; struct usb_device *dev; struct net_device *net; wait_queue_head_t term_wait; struct urb *rx_urb; struct urb *tx_urb; struct urb *irq_urb; dma_addr_t intbufferhandle; __u8 *intbuffer; dma_addr_t rxbufferhandle; __u8 *rx_buf; struct sk_buff *tx_skb; __u8 *firmware_buf; __u8 scratch[KAWETH_SCRATCH_SIZE]; __u16 packet_filter_bitmap; struct kaweth_ethernet_configuration configuration; struct net_device_stats stats; }; /**************************************************************** * kaweth_control ****************************************************************/ static int kaweth_control(struct kaweth_device *kaweth, unsigned int pipe, __u8 request, __u8 requesttype, __u16 value, __u16 index, void *data, __u16 size, int timeout) { struct usb_ctrlrequest *dr; kaweth_dbg("kaweth_control()"); if(in_interrupt()) { kaweth_dbg("in_interrupt()"); return -EBUSY; } dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC); if (!dr) { kaweth_dbg("kmalloc() failed"); return -ENOMEM; } dr->bRequestType= requesttype; dr->bRequest = request; dr->wValue = cpu_to_le16p(&value); dr->wIndex = cpu_to_le16p(&index); dr->wLength = cpu_to_le16p(&size); return kaweth_internal_control_msg(kaweth->dev, pipe, dr, data, size, timeout); } /**************************************************************** * kaweth_read_configuration ****************************************************************/ static int kaweth_read_configuration(struct kaweth_device *kaweth) { int retval; kaweth_dbg("Reading kaweth configuration"); retval = kaweth_control(kaweth, usb_rcvctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_GET_ETHERNET_DESC, USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE, 0, 0, (void *)&kaweth->configuration, sizeof(kaweth->configuration), KAWETH_CONTROL_TIMEOUT); return retval; } /**************************************************************** * kaweth_set_urb_size ****************************************************************/ static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size) { int retval; kaweth_dbg("Setting URB size to %d", (unsigned)urb_size); retval = kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SET_URB_SIZE, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, urb_size, 0, (void *)&kaweth->scratch, 0, KAWETH_CONTROL_TIMEOUT); return retval; } /**************************************************************** * kaweth_set_sofs_wait ****************************************************************/ static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait) { int retval; kaweth_dbg("Set SOFS wait to %d", (unsigned)sofs_wait); retval = kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SET_SOFS_WAIT, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, sofs_wait, 0, (void *)&kaweth->scratch, 0, KAWETH_CONTROL_TIMEOUT); return retval; } /**************************************************************** * kaweth_set_receive_filter ****************************************************************/ static int kaweth_set_receive_filter(struct kaweth_device *kaweth, __u16 receive_filter) { int retval; kaweth_dbg("Set receive filter to %d", (unsigned)receive_filter); retval = kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SET_PACKET_FILTER, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, receive_filter, 0, (void *)&kaweth->scratch, 0, KAWETH_CONTROL_TIMEOUT); return retval; } /**************************************************************** * kaweth_download_firmware ****************************************************************/ static int kaweth_download_firmware(struct kaweth_device *kaweth, __u8 *data, __u16 data_len, __u8 interrupt, __u8 type) { if(data_len > KAWETH_FIRMWARE_BUF_SIZE) { kaweth_err("Firmware too big: %d", data_len); return -ENOSPC; } memcpy(kaweth->firmware_buf, data, data_len); kaweth->firmware_buf[2] = (data_len & 0xFF) - 7; kaweth->firmware_buf[3] = data_len >> 8; kaweth->firmware_buf[4] = type; kaweth->firmware_buf[5] = interrupt; kaweth_dbg("High: %i, Low:%i", kaweth->firmware_buf[3], kaweth->firmware_buf[2]); kaweth_dbg("Downloading firmware at %p to kaweth device at %p", data, kaweth); kaweth_dbg("Firmware length: %d", data_len); return kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SCAN, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, 0, 0, (void *)kaweth->firmware_buf, data_len, KAWETH_CONTROL_TIMEOUT); } /**************************************************************** * kaweth_trigger_firmware ****************************************************************/ static int kaweth_trigger_firmware(struct kaweth_device *kaweth, __u8 interrupt) { kaweth->firmware_buf[0] = 0xB6; kaweth->firmware_buf[1] = 0xC3; kaweth->firmware_buf[2] = 0x01; kaweth->firmware_buf[3] = 0x00; kaweth->firmware_buf[4] = 0x06; kaweth->firmware_buf[5] = interrupt; kaweth->firmware_buf[6] = 0x00; kaweth->firmware_buf[7] = 0x00; kaweth_dbg("Triggering firmware"); return kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SCAN, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, 0, 0, (void *)kaweth->firmware_buf, 8, KAWETH_CONTROL_TIMEOUT); } /**************************************************************** * kaweth_reset ****************************************************************/ static int kaweth_reset(struct kaweth_device *kaweth) { int result; kaweth_dbg("kaweth_reset(%p)", kaweth); result = kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), USB_REQ_SET_CONFIGURATION, 0, kaweth->dev->config[0].desc.bConfigurationValue, 0, NULL, 0, KAWETH_CONTROL_TIMEOUT); mdelay(10); kaweth_dbg("kaweth_reset() returns %d.",result); return result; } static void kaweth_usb_receive(struct urb *, struct pt_regs *regs); static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t); /**************************************************************** int_callback *****************************************************************/ static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf) { int status; status = usb_submit_urb (kaweth->irq_urb, mf); if (unlikely(status == -ENOMEM)) { kaweth->suspend_lowmem_ctrl = 1; schedule_delayed_work(&kaweth->lowmem_work, HZ/4); } else { kaweth->suspend_lowmem_ctrl = 0; } if (status) err ("can't resubmit intr, %s-%s, status %d", kaweth->dev->bus->bus_name, kaweth->dev->devpath, status); } static void int_callback(struct urb *u, struct pt_regs *regs) { struct kaweth_device *kaweth = u->context; int act_state; switch (u->status) { case 0: /* success */ break; case -ECONNRESET: /* unlink */ case -ENOENT: case -ESHUTDOWN: return; /* -EPIPE: should clear the halt */ default: /* error */ goto resubmit; } /* we check the link state to report changes */ if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) { if (act_state) netif_carrier_on(kaweth->net); else netif_carrier_off(kaweth->net); kaweth->linkstate = act_state; } resubmit: kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC); } static void kaweth_resubmit_tl(void *d) { struct kaweth_device *kaweth = (struct kaweth_device *)d; if (kaweth->status | KAWETH_STATUS_CLOSING) return; if (kaweth->suspend_lowmem_rx) kaweth_resubmit_rx_urb(kaweth, GFP_NOIO); if (kaweth->suspend_lowmem_ctrl) kaweth_resubmit_int_urb(kaweth, GFP_NOIO); } /**************************************************************** * kaweth_resubmit_rx_urb ****************************************************************/ static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth, gfp_t mem_flags) { int result; usb_fill_bulk_urb(kaweth->rx_urb, kaweth->dev, usb_rcvbulkpipe(kaweth->dev, 1), kaweth->rx_buf, KAWETH_BUF_SIZE, kaweth_usb_receive, kaweth); kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle; if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) { if (result == -ENOMEM) { kaweth->suspend_lowmem_rx = 1; schedule_delayed_work(&kaweth->lowmem_work, HZ/4); } kaweth_err("resubmitting rx_urb %d failed", result); } else { kaweth->suspend_lowmem_rx = 0; } return result; } static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth); /**************************************************************** * kaweth_usb_receive ****************************************************************/ static void kaweth_usb_receive(struct urb *urb, struct pt_regs *regs) { struct kaweth_device *kaweth = urb->context; struct net_device *net = kaweth->net; int count = urb->actual_length; int count2 = urb->transfer_buffer_length; __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf); struct sk_buff *skb; if(unlikely(urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)) /* we are killed - set a flag and wake the disconnect handler */ { kaweth->end = 1; wake_up(&kaweth->term_wait); return; } if (kaweth->status & KAWETH_STATUS_CLOSING) return; if(urb->status && urb->status != -EREMOTEIO && count != 1) { kaweth_err("%s RX status: %d count: %d packet_len: %d", net->name, urb->status, count, (int)pkt_len); kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); return; } if(kaweth->net && (count > 2)) { if(pkt_len > (count - 2)) { kaweth_err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len, count); kaweth_err("Packet len & 2047: %x", pkt_len & 2047); kaweth_err("Count 2: %x", count2); kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); return; } if(!(skb = dev_alloc_skb(pkt_len+2))) { kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); return; } skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ skb->dev = net; eth_copy_and_sum(skb, kaweth->rx_buf + 2, pkt_len, 0); skb_put(skb, pkt_len); skb->protocol = eth_type_trans(skb, net); netif_rx(skb); kaweth->stats.rx_packets++; kaweth->stats.rx_bytes += pkt_len; } kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); } /**************************************************************** * kaweth_open ****************************************************************/ static int kaweth_open(struct net_device *net) { struct kaweth_device *kaweth = netdev_priv(net); int res; kaweth_dbg("Opening network device."); res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL); if (res) return -EIO; usb_fill_int_urb( kaweth->irq_urb, kaweth->dev, usb_rcvintpipe(kaweth->dev, 3), kaweth->intbuffer, INTBUFFERSIZE, int_callback, kaweth, 250); /* overriding the descriptor */ kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle; kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL); if (res) { usb_kill_urb(kaweth->rx_urb); return -EIO; } netif_start_queue(net); kaweth_async_set_rx_mode(kaweth); return 0; } /**************************************************************** * kaweth_close ****************************************************************/ static int kaweth_close(struct net_device *net) { struct kaweth_device *kaweth = netdev_priv(net); netif_stop_queue(net); kaweth->status |= KAWETH_STATUS_CLOSING; usb_kill_urb(kaweth->irq_urb); usb_kill_urb(kaweth->rx_urb); usb_kill_urb(kaweth->tx_urb); flush_scheduled_work(); /* a scheduled work may have resubmitted, we hit them again */ usb_kill_urb(kaweth->irq_urb); usb_kill_urb(kaweth->rx_urb); kaweth->status &= ~KAWETH_STATUS_CLOSING; return 0; } static void kaweth_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { strlcpy(info->driver, driver_name, sizeof(info->driver)); } static struct ethtool_ops ops = { .get_drvinfo = kaweth_get_drvinfo }; /**************************************************************** * kaweth_usb_transmit_complete ****************************************************************/ static void kaweth_usb_transmit_complete(struct urb *urb, struct pt_regs *regs) { struct kaweth_device *kaweth = urb->context; struct sk_buff *skb = kaweth->tx_skb; if (unlikely(urb->status != 0)) if (urb->status != -ENOENT) kaweth_dbg("%s: TX status %d.", kaweth->net->name, urb->status); netif_wake_queue(kaweth->net); dev_kfree_skb_irq(skb); } /**************************************************************** * kaweth_start_xmit ****************************************************************/ static int kaweth_start_xmit(struct sk_buff *skb, struct net_device *net) { struct kaweth_device *kaweth = netdev_priv(net); __le16 *private_header; int res; spin_lock(&kaweth->device_lock); kaweth_async_set_rx_mode(kaweth); netif_stop_queue(net); /* We now decide whether we can put our special header into the sk_buff */ if (skb_cloned(skb) || skb_headroom(skb) < 2) { /* no such luck - we make our own */ struct sk_buff *copied_skb; copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC); dev_kfree_skb_irq(skb); skb = copied_skb; if (!copied_skb) { kaweth->stats.tx_errors++; netif_start_queue(net); spin_unlock(&kaweth->device_lock); return 0; } } private_header = (__le16 *)__skb_push(skb, 2); *private_header = cpu_to_le16(skb->len-2); kaweth->tx_skb = skb; usb_fill_bulk_urb(kaweth->tx_urb, kaweth->dev, usb_sndbulkpipe(kaweth->dev, 2), private_header, skb->len, kaweth_usb_transmit_complete, kaweth); kaweth->end = 0; if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC))) { kaweth_warn("kaweth failed tx_urb %d", res); kaweth->stats.tx_errors++; netif_start_queue(net); dev_kfree_skb_irq(skb); } else { kaweth->stats.tx_packets++; kaweth->stats.tx_bytes += skb->len; net->trans_start = jiffies; } spin_unlock(&kaweth->device_lock); return 0; } /**************************************************************** * kaweth_set_rx_mode ****************************************************************/ static void kaweth_set_rx_mode(struct net_device *net) { struct kaweth_device *kaweth = netdev_priv(net); __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED | KAWETH_PACKET_FILTER_BROADCAST | KAWETH_PACKET_FILTER_MULTICAST; kaweth_dbg("Setting Rx mode to %d", packet_filter_bitmap); netif_stop_queue(net); if (net->flags & IFF_PROMISC) { packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS; } else if ((net->mc_count) || (net->flags & IFF_ALLMULTI)) { packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST; } kaweth->packet_filter_bitmap = packet_filter_bitmap; netif_wake_queue(net); } /**************************************************************** * kaweth_async_set_rx_mode ****************************************************************/ static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth) { __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap; kaweth->packet_filter_bitmap = 0; if (packet_filter_bitmap == 0) return; { int result; result = kaweth_control(kaweth, usb_sndctrlpipe(kaweth->dev, 0), KAWETH_COMMAND_SET_PACKET_FILTER, USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, packet_filter_bitmap, 0, (void *)&kaweth->scratch, 0, KAWETH_CONTROL_TIMEOUT); if(result < 0) { kaweth_err("Failed to set Rx mode: %d", result); } else { kaweth_dbg("Set Rx mode to %d", packet_filter_bitmap); } } } /**************************************************************** * kaweth_netdev_stats ****************************************************************/ static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev) { struct kaweth_device *kaweth = netdev_priv(dev); return &kaweth->stats; } /**************************************************************** * kaweth_tx_timeout ****************************************************************/ static void kaweth_tx_timeout(struct net_device *net) { struct kaweth_device *kaweth = netdev_priv(net); kaweth_warn("%s: Tx timed out. Resetting.", net->name); kaweth->stats.tx_errors++; net->trans_start = jiffies; usb_unlink_urb(kaweth->tx_urb); } /**************************************************************** * kaweth_probe ****************************************************************/ static int kaweth_probe( struct usb_interface *intf, const struct usb_device_id *id /* from id_table */ ) { struct usb_device *dev = interface_to_usbdev(intf); struct kaweth_device *kaweth; struct net_device *netdev; const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; int result = 0; kaweth_dbg("Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x", dev->devnum, le16_to_cpu(dev->descriptor.idVendor), le16_to_cpu(dev->descriptor.idProduct), le16_to_cpu(dev->descriptor.bcdDevice)); kaweth_dbg("Device at %p", dev); kaweth_dbg("Descriptor length: %x type: %x", (int)dev->descriptor.bLength, (int)dev->descriptor.bDescriptorType); netdev = alloc_etherdev(sizeof(*kaweth)); if (!netdev) return -ENOMEM; kaweth = netdev_priv(netdev); kaweth->dev = dev; kaweth->net = netdev; spin_lock_init(&kaweth->device_lock); init_waitqueue_head(&kaweth->term_wait); kaweth_dbg("Resetting."); kaweth_reset(kaweth); /* * If high byte of bcdDevice is nonzero, firmware is already * downloaded. Don't try to do it again, or we'll hang the device. */ if (le16_to_cpu(dev->descriptor.bcdDevice) >> 8) { kaweth_info("Firmware present in device."); } else { /* Download the firmware */ kaweth_info("Downloading firmware..."); kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL); if ((result = kaweth_download_firmware(kaweth, kaweth_new_code, len_kaweth_new_code, 100, 2)) < 0) { kaweth_err("Error downloading firmware (%d)", result); goto err_fw; } if ((result = kaweth_download_firmware(kaweth, kaweth_new_code_fix, len_kaweth_new_code_fix, 100, 3)) < 0) { kaweth_err("Error downloading firmware fix (%d)", result); goto err_fw; } if ((result = kaweth_download_firmware(kaweth, kaweth_trigger_code, len_kaweth_trigger_code, 126, 2)) < 0) { kaweth_err("Error downloading trigger code (%d)", result); goto err_fw; } if ((result = kaweth_download_firmware(kaweth, kaweth_trigger_code_fix, len_kaweth_trigger_code_fix, 126, 3)) < 0) { kaweth_err("Error downloading trigger code fix (%d)", result); goto err_fw; } if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) { kaweth_err("Error triggering firmware (%d)", result); goto err_fw; } /* Device will now disappear for a moment... */ kaweth_info("Firmware loaded. I'll be back..."); err_fw: free_page((unsigned long)kaweth->firmware_buf); free_netdev(netdev); return -EIO; } result = kaweth_read_configuration(kaweth); if(result < 0) { kaweth_err("Error reading configuration (%d), no net device created", result); goto err_free_netdev; } kaweth_info("Statistics collection: %x", kaweth->configuration.statistics_mask); kaweth_info("Multicast filter limit: %x", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1)); kaweth_info("MTU: %d", le16_to_cpu(kaweth->configuration.segment_size)); kaweth_info("Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", (int)kaweth->configuration.hw_addr[0], (int)kaweth->configuration.hw_addr[1], (int)kaweth->configuration.hw_addr[2], (int)kaweth->configuration.hw_addr[3], (int)kaweth->configuration.hw_addr[4], (int)kaweth->configuration.hw_addr[5]); if(!memcmp(&kaweth->configuration.hw_addr, &bcast_addr, sizeof(bcast_addr))) { kaweth_err("Firmware not functioning properly, no net device created"); goto err_free_netdev; } if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) { kaweth_dbg("Error setting URB size"); goto err_free_netdev; } if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) { kaweth_err("Error setting SOFS wait"); goto err_free_netdev; } result = kaweth_set_receive_filter(kaweth, KAWETH_PACKET_FILTER_DIRECTED | KAWETH_PACKET_FILTER_BROADCAST | KAWETH_PACKET_FILTER_MULTICAST); if(result < 0) { kaweth_err("Error setting receive filter"); goto err_free_netdev; } kaweth_dbg("Initializing net device."); kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL); if (!kaweth->tx_urb) goto err_free_netdev; kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL); if (!kaweth->rx_urb) goto err_only_tx; kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL); if (!kaweth->irq_urb) goto err_tx_and_rx; kaweth->intbuffer = usb_buffer_alloc( kaweth->dev, INTBUFFERSIZE, GFP_KERNEL, &kaweth->intbufferhandle); if (!kaweth->intbuffer) goto err_tx_and_rx_and_irq; kaweth->rx_buf = usb_buffer_alloc( kaweth->dev, KAWETH_BUF_SIZE, GFP_KERNEL, &kaweth->rxbufferhandle); if (!kaweth->rx_buf) goto err_all_but_rxbuf; memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr)); memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr, sizeof(kaweth->configuration.hw_addr)); netdev->open = kaweth_open; netdev->stop = kaweth_close; netdev->watchdog_timeo = KAWETH_TX_TIMEOUT; netdev->tx_timeout = kaweth_tx_timeout; netdev->hard_start_xmit = kaweth_start_xmit; netdev->set_multicast_list = kaweth_set_rx_mode; netdev->get_stats = kaweth_netdev_stats; netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size); SET_ETHTOOL_OPS(netdev, &ops); /* kaweth is zeroed as part of alloc_netdev */ INIT_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl, (void *)kaweth); SET_MODULE_OWNER(netdev); usb_set_intfdata(intf, kaweth); #if 0 // dma_supported() is deeply broken on almost all architectures if (dma_supported (&intf->dev, 0xffffffffffffffffULL)) kaweth->net->features |= NETIF_F_HIGHDMA; #endif SET_NETDEV_DEV(netdev, &intf->dev); if (register_netdev(netdev) != 0) { kaweth_err("Error registering netdev."); goto err_intfdata; } kaweth_info("kaweth interface created at %s", kaweth->net->name); kaweth_dbg("Kaweth probe returning."); return 0; err_intfdata: usb_set_intfdata(intf, NULL); usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); err_all_but_rxbuf: usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); err_tx_and_rx_and_irq: usb_free_urb(kaweth->irq_urb); err_tx_and_rx: usb_free_urb(kaweth->rx_urb); err_only_tx: usb_free_urb(kaweth->tx_urb); err_free_netdev: free_netdev(netdev); return -EIO; } /**************************************************************** * kaweth_disconnect ****************************************************************/ static void kaweth_disconnect(struct usb_interface *intf) { struct kaweth_device *kaweth = usb_get_intfdata(intf); struct net_device *netdev; kaweth_info("Unregistering"); usb_set_intfdata(intf, NULL); if (!kaweth) { kaweth_warn("unregistering non-existant device"); return; } netdev = kaweth->net; kaweth_dbg("Unregistering net device"); unregister_netdev(netdev); usb_free_urb(kaweth->rx_urb); usb_free_urb(kaweth->tx_urb); usb_free_urb(kaweth->irq_urb); usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); free_netdev(netdev); } // FIXME this completion stuff is a modified clone of // an OLD version of some stuff in usb.c ... struct usb_api_data { wait_queue_head_t wqh; int done; }; /*-------------------------------------------------------------------* * completion handler for compatibility wrappers (sync control/bulk) * *-------------------------------------------------------------------*/ static void usb_api_blocking_completion(struct urb *urb, struct pt_regs *regs) { struct usb_api_data *awd = (struct usb_api_data *)urb->context; awd->done=1; wake_up(&awd->wqh); } /*-------------------------------------------------------------------* * COMPATIBILITY STUFF * *-------------------------------------------------------------------*/ // Starts urb and waits for completion or timeout static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length) { struct usb_api_data awd; int status; init_waitqueue_head(&awd.wqh); awd.done = 0; urb->context = &awd; status = usb_submit_urb(urb, GFP_NOIO); if (status) { // something went wrong usb_free_urb(urb); return status; } if (!wait_event_timeout(awd.wqh, awd.done, timeout)) { // timeout kaweth_warn("usb_control/bulk_msg: timeout"); usb_kill_urb(urb); // remove urb safely status = -ETIMEDOUT; } else { status = urb->status; } if (actual_length) { *actual_length = urb->actual_length; } usb_free_urb(urb); return status; } /*-------------------------------------------------------------------*/ // returns status (negative) or length (positive) static int kaweth_internal_control_msg(struct usb_device *usb_dev, unsigned int pipe, struct usb_ctrlrequest *cmd, void *data, int len, int timeout) { struct urb *urb; int retv; int length; urb = usb_alloc_urb(0, GFP_NOIO); if (!urb) return -ENOMEM; usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data, len, usb_api_blocking_completion, NULL); retv = usb_start_wait_urb(urb, timeout, &length); if (retv < 0) { return retv; } else { return length; } } /**************************************************************** * kaweth_init ****************************************************************/ static int __init kaweth_init(void) { kaweth_dbg("Driver loading"); return usb_register(&kaweth_driver); } /**************************************************************** * kaweth_exit ****************************************************************/ static void __exit kaweth_exit(void) { usb_deregister(&kaweth_driver); } module_init(kaweth_init); module_exit(kaweth_exit);