patch-2.4.9 linux/drivers/usb/kaweth.c
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- Lines: 1055
- Date:
Sun Aug 12 17:37:53 2001
- Orig file:
v2.4.8/linux/drivers/usb/kaweth.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.8/linux/drivers/usb/kaweth.c linux/drivers/usb/kaweth.c
@@ -0,0 +1,1054 @@
+/****************************************************************
+ *
+ * kaweth.c - driver for KL5KUSB101 based USB->Ethernet
+ *
+ * (c) 2000 Interlan Communications
+ * (c) 2000 Stephane Alnet
+ * (C) 2001 Brad Hards
+ *
+ * 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 <asm/semaphore.h>
+
+#define 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_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
+
+
+MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr> and Brad Hards <bhards@bigpond.net.au>");
+MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
+
+static void *kaweth_probe(
+ struct usb_device *dev, /* the device */
+ unsigned ifnum, /* what interface */
+ const struct usb_device_id *id /* from id_table */
+ );
+static void kaweth_disconnect(struct usb_device *dev, void *ptr);
+int kaweth_internal_control_msg(struct usb_device *usb_dev, unsigned int pipe,
+ devrequest *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(0x0557, 0x2002) }, /* ATEN USB Ethernet */
+ { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */
+ { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */
+ { 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(0x1645, 0x0005) }, /* Entrega E45 */
+ { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */
+ { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */
+ { 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: "kaweth",
+ 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;
+ __u16 segment_size;
+ __u16 max_multicast_filters;
+ __u8 reserved3;
+} __attribute__ ((packed));
+
+/****************************************************************
+ * kaweth_device
+ ****************************************************************/
+struct kaweth_device
+{
+ spinlock_t device_lock;
+
+ __u32 status;
+
+ struct usb_device *dev;
+ struct net_device *net;
+ wait_queue_head_t control_wait;
+
+ struct urb *rx_urb;
+ struct urb *tx_urb;
+
+ __u8 firmware_buf[KAWETH_FIRMWARE_BUF_SIZE];
+ __u8 tx_buf[KAWETH_BUF_SIZE];
+ __u8 rx_buf[KAWETH_BUF_SIZE];
+ __u16 packet_filter_bitmap;
+
+ struct kaweth_ethernet_configuration configuration;
+
+ struct net_device_stats stats;
+} __attribute__ ((packed));
+
+
+/****************************************************************
+ * 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)
+{
+ devrequest *dr;
+
+ kaweth_dbg("kaweth_control()");
+
+ if(in_interrupt()) {
+ kaweth_dbg("in_interrupt()");
+ return -EBUSY;
+ }
+
+ dr = kmalloc(sizeof(devrequest),
+ in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
+
+ if(!dr)
+ {
+ kaweth_dbg("kmalloc() failed");
+ return -ENOMEM;
+ }
+
+ dr->requesttype = requesttype;
+ dr->request = request;
+ dr->value = value;
+ dr->index = index;
+ dr->length = 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->firmware_buf,
+ 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->firmware_buf,
+ 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->firmware_buf,
+ 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("Downloading firmware at %x to kaweth device at %x",
+ (int)data,
+ (int)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].bConfigurationValue,
+ 0,
+ NULL,
+ 0,
+ KAWETH_CONTROL_TIMEOUT);
+
+ udelay(10000);
+
+ kaweth_dbg("kaweth_reset() returns %d.",result);
+
+ return result;
+}
+
+static void kaweth_usb_receive(struct urb *);
+
+/****************************************************************
+ * kaweth_resubmit_rx_urb
+ ****************************************************************/
+static inline void kaweth_resubmit_rx_urb(struct kaweth_device *kaweth)
+{
+ int result;
+
+ memset(kaweth->rx_urb, 0, sizeof(*kaweth->rx_urb));
+
+ FILL_BULK_URB(kaweth->rx_urb,
+ kaweth->dev,
+ usb_rcvbulkpipe(kaweth->dev, 1),
+ kaweth->rx_buf,
+ KAWETH_BUF_SIZE,
+ kaweth_usb_receive,
+ kaweth);
+
+ if((result = usb_submit_urb(kaweth->rx_urb))) {
+ kaweth_err("resubmitting rx_urb %d failed", result);
+ }
+}
+
+static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth);
+
+/****************************************************************
+ * kaweth_usb_receive
+ ****************************************************************/
+static void kaweth_usb_receive(struct urb *urb)
+{
+ 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 = *(__u16 *)kaweth->rx_buf;
+
+ struct sk_buff *skb;
+
+ 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);
+ 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);
+ return;
+ }
+
+ if(!(skb = dev_alloc_skb(pkt_len+2))) {
+ kaweth_resubmit_rx_urb(kaweth);
+ return;
+ }
+
+ 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);
+}
+
+/****************************************************************
+ * kaweth_open
+ ****************************************************************/
+static int kaweth_open(struct net_device *net)
+{
+ struct kaweth_device *kaweth = (struct kaweth_device *)net->priv;
+
+ kaweth_dbg("Dev usage: %d", kaweth->dev->refcnt.counter);
+
+ kaweth_dbg("Opening network device.");
+
+ kaweth_resubmit_rx_urb(kaweth);
+
+ netif_start_queue(net);
+
+ MOD_INC_USE_COUNT;
+
+ kaweth_async_set_rx_mode(kaweth);
+ return 0;
+}
+
+/****************************************************************
+ * kaweth_close
+ ****************************************************************/
+static int kaweth_close(struct net_device *net)
+{
+ struct kaweth_device *kaweth = net->priv;
+
+ netif_stop_queue(net);
+
+ kaweth->status |= KAWETH_STATUS_CLOSING;
+
+ usb_unlink_urb(kaweth->rx_urb);
+
+ kaweth->status &= ~KAWETH_STATUS_CLOSING;
+
+ MOD_DEC_USE_COUNT;
+
+ printk("Dev usage: %d", kaweth->dev->refcnt.counter);
+
+ return 0;
+}
+
+/****************************************************************
+ * kaweth_ioctl
+ ****************************************************************/
+static int kaweth_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
+{
+ return -EOPNOTSUPP;
+}
+
+/****************************************************************
+ * kaweth_usb_transmit_complete
+ ****************************************************************/
+static void kaweth_usb_transmit_complete(struct urb *urb)
+{
+ struct kaweth_device *kaweth = urb->context;
+
+ spin_lock(&kaweth->device_lock);
+
+ if (urb->status)
+ kaweth_dbg("%s: TX status %d.", kaweth->net->name, urb->status);
+
+ netif_wake_queue(kaweth->net);
+
+ spin_unlock(&kaweth->device_lock);
+}
+
+/****************************************************************
+ * kaweth_start_xmit
+ ****************************************************************/
+static int kaweth_start_xmit(struct sk_buff *skb, struct net_device *net)
+{
+ struct kaweth_device *kaweth = net->priv;
+ int count = skb->len;
+
+ int res;
+
+ spin_lock(&kaweth->device_lock);
+
+ kaweth_async_set_rx_mode(kaweth);
+ netif_stop_queue(net);
+
+ *((__u16 *)kaweth->tx_buf) = skb->len;
+
+ memcpy(kaweth->tx_buf + 2, skb->data, skb->len);
+
+ memset(kaweth->tx_urb, 0, sizeof(*kaweth->tx_urb));
+
+ FILL_BULK_URB(kaweth->tx_urb,
+ kaweth->dev,
+ usb_sndbulkpipe(kaweth->dev, 2),
+ kaweth->tx_buf,
+ count + 2,
+ kaweth_usb_transmit_complete,
+ kaweth);
+
+ if((res = usb_submit_urb(kaweth->tx_urb)))
+ {
+ kaweth_warn("kaweth failed tx_urb %d", res);
+ kaweth->stats.tx_errors++;
+
+ netif_start_queue(net);
+ }
+ else
+ {
+ kaweth->stats.tx_packets++;
+ kaweth->stats.tx_bytes += skb->len;
+ net->trans_start = jiffies;
+ }
+
+ dev_kfree_skb(skb);
+
+ 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 = net->priv;
+
+ __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->firmware_buf,
+ 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)
+{
+ return &((struct kaweth_device *)dev->priv)->stats;
+}
+
+/****************************************************************
+ * kaweth_tx_timeout
+ ****************************************************************/
+static void kaweth_tx_timeout(struct net_device *net)
+{
+ struct kaweth_device *kaweth = net->priv;
+
+ kaweth_warn("%s: Tx timed out. Resetting.", net->name);
+ kaweth->stats.tx_errors++;
+ net->trans_start = jiffies;
+
+ usb_unlink_urb(kaweth->tx_urb);
+
+ netif_wake_queue(net);
+}
+
+/****************************************************************
+ * kaweth_probe
+ ****************************************************************/
+static void *kaweth_probe(
+ struct usb_device *dev, /* the device */
+ unsigned ifnum, /* what interface */
+ const struct usb_device_id *id /* from id_table */
+ )
+{
+ struct kaweth_device *kaweth;
+ 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,
+ (int)dev->descriptor.idVendor,
+ (int)dev->descriptor.idProduct,
+ (int)dev->descriptor.bcdDevice);
+
+ kaweth_dbg("Device at %p", dev);
+
+ kaweth_dbg("Descriptor length: %x type: %x",
+ (int)dev->descriptor.bLength,
+ (int)dev->descriptor.bDescriptorType);
+
+ if(!(kaweth = kmalloc(sizeof(struct kaweth_device), GFP_KERNEL))) {
+ kaweth_dbg("out of memory allocating device structure\n");
+ return NULL;
+ }
+
+ memset(kaweth, 0, sizeof(struct kaweth_device));
+
+ kaweth->dev = dev;
+ kaweth->status = 0;
+ kaweth->net = NULL;
+ kaweth->device_lock = SPIN_LOCK_UNLOCKED;
+
+ 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 (dev->descriptor.bcdDevice >> 8) {
+ kaweth_info("Firmware present in device.");
+ } else {
+ /* Download the firmware */
+ kaweth_info("Downloading firmware...");
+ if ((result = kaweth_download_firmware(kaweth,
+ kaweth_new_code,
+ len_kaweth_new_code,
+ 100,
+ 2)) < 0) {
+ kaweth_err("Error downloading firmware (%d)", result);
+ kfree(kaweth);
+ return NULL;
+ }
+
+ 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);
+ kfree(kaweth);
+ return NULL;
+ }
+
+ if ((result = kaweth_download_firmware(kaweth,
+ kaweth_trigger_code,
+ len_kaweth_trigger_code,
+ 126,
+ 2)) < 0) {
+ kaweth_err("Error downloading trigger code (%d)", result);
+ kfree(kaweth);
+ return NULL;
+ }
+
+ 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);
+ kfree(kaweth);
+ return NULL;
+ }
+
+
+ if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
+ kaweth_err("Error triggering firmware (%d)", result);
+ kfree(kaweth);
+ return NULL;
+ }
+
+ /* Device will now disappear for a moment... */
+ kaweth_info("Firmware loaded. I'll be back...");
+ return NULL;
+ }
+
+ result = kaweth_read_configuration(kaweth);
+
+ if(result < 0) {
+ kaweth_err("Error reading configuration (%d), no net device created", result);
+ kfree(kaweth);
+ return NULL;
+ }
+
+ 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", 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");
+ kfree(kaweth);
+ return NULL;
+ }
+
+ if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
+ kaweth_dbg("Error setting URB size");
+ return kaweth;
+ }
+
+ if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
+ kaweth_err("Error setting SOFS wait");
+ return kaweth;
+ }
+
+ 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");
+ return kaweth;
+ }
+
+ kaweth_dbg("Initializing net device.");
+
+ kaweth->tx_urb = usb_alloc_urb(0);
+ kaweth->rx_urb = usb_alloc_urb(0);
+
+ kaweth->net = init_etherdev(0, 0);
+
+ memcpy(kaweth->net->broadcast, &bcast_addr, sizeof(bcast_addr));
+ memcpy(kaweth->net->dev_addr,
+ &kaweth->configuration.hw_addr,
+ sizeof(kaweth->configuration.hw_addr));
+
+ kaweth->net->priv = kaweth;
+ kaweth->net->open = kaweth_open;
+ kaweth->net->stop = kaweth_close;
+
+ kaweth->net->watchdog_timeo = KAWETH_TX_TIMEOUT;
+ kaweth->net->tx_timeout = kaweth_tx_timeout;
+
+ kaweth->net->do_ioctl = kaweth_ioctl;
+ kaweth->net->hard_start_xmit = kaweth_start_xmit;
+ kaweth->net->set_multicast_list = kaweth_set_rx_mode;
+ kaweth->net->get_stats = kaweth_netdev_stats;
+ kaweth->net->mtu = kaweth->configuration.segment_size;
+
+ memset(&kaweth->stats, 0, sizeof(kaweth->stats));
+
+ kaweth_info("kaweth interface created at %s", kaweth->net->name);
+
+ kaweth_dbg("Kaweth probe returning.");
+
+ return kaweth;
+}
+
+/****************************************************************
+ * kaweth_disconnect
+ ****************************************************************/
+static void kaweth_disconnect(struct usb_device *dev, void *ptr)
+{
+ struct kaweth_device *kaweth = ptr;
+
+ kaweth_info("Unregistering");
+
+ if (!kaweth) {
+ kaweth_warn("unregistering non-existant device");
+ return;
+ }
+
+ if(kaweth->net) {
+ if(kaweth->net->flags & IFF_UP) {
+ kaweth_dbg("Closing net device");
+ dev_close(kaweth->net);
+ }
+
+ kaweth_dbg("Unregistering net device");
+ unregister_netdev(kaweth->net);
+ }
+
+ usb_free_urb(kaweth->rx_urb);
+ usb_free_urb(kaweth->tx_urb);
+
+ kfree(kaweth);
+}
+
+
+/*-------------------------------------------------------------------*
+ * completion handler for compatibility wrappers (sync control/bulk) *
+ *-------------------------------------------------------------------*/
+static void usb_api_blocking_completion(urb_t *urb)
+{
+ api_wrapper_data *awd = (api_wrapper_data *)urb->context;
+
+ if (waitqueue_active(awd->wakeup)) {
+ wake_up(awd->wakeup);
+ }
+
+}
+
+/*-------------------------------------------------------------------*
+ * COMPATIBILITY STUFF *
+ *-------------------------------------------------------------------*/
+
+// Starts urb and waits for completion or timeout
+static int usb_start_wait_urb(urb_t *urb, int timeout, int* actual_length)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ DECLARE_WAIT_QUEUE_HEAD(wqh);
+ api_wrapper_data awd;
+ int status;
+
+ awd.wakeup = &wqh;
+ init_waitqueue_head(&wqh);
+ current->state = TASK_INTERRUPTIBLE;
+ add_wait_queue(&wqh, &wait);
+ urb->context = &awd;
+ status = usb_submit_urb(urb);
+ if (status) {
+ // something went wrong
+ usb_free_urb(urb);
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&wqh, &wait);
+ return status;
+ }
+
+ if (urb->status == -EINPROGRESS) {
+ while (timeout && urb->status == -EINPROGRESS)
+ status = timeout = schedule_timeout(timeout);
+ }
+ else {
+ status = 1;
+ }
+
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&wqh, &wait);
+
+ if (!status) {
+ // timeout
+ kaweth_warn("usb_control/bulk_msg: timeout");
+ usb_unlink_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)
+int kaweth_internal_control_msg(struct usb_device *usb_dev, unsigned int pipe,
+ devrequest *cmd, void *data, int len, int timeout)
+{
+ urb_t *urb;
+ int retv;
+ int length;
+
+ urb = usb_alloc_urb(0);
+ if (!urb)
+ return -ENOMEM;
+
+ FILL_CONTROL_URB(urb, usb_dev, pipe, (unsigned char*)cmd, data,
+ len, (usb_complete_t)usb_api_blocking_completion,0);
+
+ retv = usb_start_wait_urb(urb, timeout, &length);
+ if (retv < 0) {
+ return retv;
+ }
+ else {
+ return length;
+ }
+}
+
+
+/****************************************************************
+ * kaweth_init
+ ****************************************************************/
+int __init kaweth_init(void)
+{
+ kaweth_dbg("Driver loading");
+ return usb_register(&kaweth_driver);
+}
+
+/****************************************************************
+ * kaweth_exit
+ ****************************************************************/
+void __exit kaweth_exit(void)
+{
+ usb_deregister(&kaweth_driver);
+}
+
+module_init(kaweth_init);
+module_exit(kaweth_exit);
+
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)