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authorPaul Mackerras <paulus@samba.org>2007-05-10 21:08:37 +1000
committerPaul Mackerras <paulus@samba.org>2007-05-10 21:08:37 +1000
commit2ecf042ef530dd0943e41d84b6344f507941af3e (patch)
tree73100361dd74e3f80f14c7c81ba4675948983f44 /drivers/net/usb/kaweth.c
parent32a56ebb24f23da1bbaf24292acf85b6c04526ab (diff)
parentde5603748af8bf7deac403e6ba92887f8d18e812 (diff)
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Merge branch 'linux-2.6'
Diffstat (limited to 'drivers/net/usb/kaweth.c')
-rw-r--r--drivers/net/usb/kaweth.c1337
1 files changed, 1337 insertions, 0 deletions
diff --git a/drivers/net/usb/kaweth.c b/drivers/net/usb/kaweth.c
new file mode 100644
index 0000000..60d2944
--- /dev/null
+++ b/drivers/net/usb/kaweth.c
@@ -0,0 +1,1337 @@
+/****************************************************************
+ *
+ * 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/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/dma-mapping.h>
+#include <linux/wait.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#include <asm/byteorder.h>
+
+#undef DEBUG
+
+#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_STATUS_SUSPENDING 0x0000004
+
+#define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING)
+
+#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
+
+#define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED)
+
+
+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);
+static int kaweth_suspend(struct usb_interface *intf, pm_message_t message);
+static int kaweth_resume(struct usb_interface *intf);
+
+/****************************************************************
+ * 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,
+ .suspend = kaweth_suspend,
+ .resume = kaweth_resume,
+ .id_table = usb_klsi_table,
+ .supports_autosuspend = 1,
+};
+
+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;
+ int opened;
+ struct delayed_work lowmem_work;
+
+ struct usb_device *dev;
+ struct usb_interface *intf;
+ 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;
+
+ dbg("kaweth_control()");
+
+ if(in_interrupt()) {
+ dbg("in_interrupt()");
+ return -EBUSY;
+ }
+
+ dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
+
+ if (!dr) {
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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) {
+ 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;
+
+ dbg("High: %i, Low:%i", kaweth->firmware_buf[3],
+ kaweth->firmware_buf[2]);
+
+ dbg("Downloading firmware at %p to kaweth device at %p",
+ data,
+ 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;
+
+ 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;
+
+ 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);
+
+ dbg("kaweth_reset() returns %d.",result);
+
+ return result;
+}
+
+static void kaweth_usb_receive(struct urb *);
+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 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(struct work_struct *work)
+{
+ struct kaweth_device *kaweth =
+ container_of(work, struct kaweth_device, lowmem_work.work);
+
+ if (IS_BLOCKED(kaweth->status))
+ 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);
+ }
+ 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 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;
+ }
+
+ spin_lock(&kaweth->device_lock);
+ if (IS_BLOCKED(kaweth->status)) {
+ spin_unlock(&kaweth->device_lock);
+ return;
+ }
+ spin_unlock(&kaweth->device_lock);
+
+ if(urb->status && urb->status != -EREMOTEIO && count != 1) {
+ 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)) {
+ err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len, count);
+ err("Packet len & 2047: %x", pkt_len & 2047);
+ 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 */
+
+ 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;
+
+ dbg("Opening network device.");
+
+ res = usb_autopm_get_interface(kaweth->intf);
+ if (res) {
+ err("Interface cannot be resumed.");
+ return -EIO;
+ }
+ res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL);
+ if (res)
+ goto err_out;
+
+ 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);
+ goto err_out;
+ }
+ kaweth->opened = 1;
+
+ netif_start_queue(net);
+
+ kaweth_async_set_rx_mode(kaweth);
+ return 0;
+
+err_out:
+ usb_autopm_enable(kaweth->intf);
+ return -EIO;
+}
+
+/****************************************************************
+ * kaweth_kill_urbs
+ ****************************************************************/
+static void kaweth_kill_urbs(struct kaweth_device *kaweth)
+{
+ 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_close
+ ****************************************************************/
+static int kaweth_close(struct net_device *net)
+{
+ struct kaweth_device *kaweth = netdev_priv(net);
+
+ netif_stop_queue(net);
+ kaweth->opened = 0;
+
+ kaweth->status |= KAWETH_STATUS_CLOSING;
+
+ kaweth_kill_urbs(kaweth);
+
+ kaweth->status &= ~KAWETH_STATUS_CLOSING;
+
+ usb_autopm_enable(kaweth->intf);
+
+ return 0;
+}
+
+static void kaweth_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+ struct kaweth_device *kaweth = netdev_priv(dev);
+
+ strlcpy(info->driver, driver_name, sizeof(info->driver));
+ usb_make_path(kaweth->dev, info->bus_info, sizeof (info->bus_info));
+}
+
+static u32 kaweth_get_link(struct net_device *dev)
+{
+ struct kaweth_device *kaweth = netdev_priv(dev);
+
+ return kaweth->linkstate;
+}
+
+static struct ethtool_ops ops = {
+ .get_drvinfo = kaweth_get_drvinfo,
+ .get_link = kaweth_get_link
+};
+
+/****************************************************************
+ * kaweth_usb_transmit_complete
+ ****************************************************************/
+static void kaweth_usb_transmit_complete(struct urb *urb)
+{
+ struct kaweth_device *kaweth = urb->context;
+ struct sk_buff *skb = kaweth->tx_skb;
+
+ if (unlikely(urb->status != 0))
+ if (urb->status != -ENOENT)
+ 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);
+ if (IS_BLOCKED(kaweth->status)) {
+ goto skip;
+ }
+
+ /* 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)))
+ {
+ warn("kaweth failed tx_urb %d", res);
+skip:
+ 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;
+
+ 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) {
+ err("Failed to set Rx mode: %d", result);
+ }
+ else {
+ 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);
+
+ warn("%s: Tx timed out. Resetting.", net->name);
+ kaweth->stats.tx_errors++;
+ net->trans_start = jiffies;
+
+ usb_unlink_urb(kaweth->tx_urb);
+}
+
+/****************************************************************
+ * kaweth_suspend
+ ****************************************************************/
+static int kaweth_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct kaweth_device *kaweth = usb_get_intfdata(intf);
+ unsigned long flags;
+
+ dbg("Suspending device");
+ spin_lock_irqsave(&kaweth->device_lock, flags);
+ kaweth->status |= KAWETH_STATUS_SUSPENDING;
+ spin_unlock_irqrestore(&kaweth->device_lock, flags);
+
+ kaweth_kill_urbs(kaweth);
+ return 0;
+}
+
+/****************************************************************
+ * kaweth_resume
+ ****************************************************************/
+static int kaweth_resume(struct usb_interface *intf)
+{
+ struct kaweth_device *kaweth = usb_get_intfdata(intf);
+ unsigned long flags;
+
+ dbg("Resuming device");
+ spin_lock_irqsave(&kaweth->device_lock, flags);
+ kaweth->status &= ~KAWETH_STATUS_SUSPENDING;
+ spin_unlock_irqrestore(&kaweth->device_lock, flags);
+
+ if (!kaweth->opened)
+ return 0;
+ kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
+ kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
+
+ return 0;
+}
+
+/****************************************************************
+ * 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;
+
+ 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));
+
+ dbg("Device at %p", dev);
+
+ 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);
+
+ 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) {
+ info("Firmware present in device.");
+ } else {
+ /* Download the firmware */
+ 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) {
+ 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) {
+ 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) {
+ 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) {
+ err("Error downloading trigger code fix (%d)", result);
+ goto err_fw;
+ }
+
+
+ if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
+ err("Error triggering firmware (%d)", result);
+ goto err_fw;
+ }
+
+ /* Device will now disappear for a moment... */
+ 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) {
+ err("Error reading configuration (%d), no net device created", result);
+ goto err_free_netdev;
+ }
+
+ info("Statistics collection: %x", kaweth->configuration.statistics_mask);
+ info("Multicast filter limit: %x", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
+ info("MTU: %d", le16_to_cpu(kaweth->configuration.segment_size));
+ 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))) {
+ err("Firmware not functioning properly, no net device created");
+ goto err_free_netdev;
+ }
+
+ if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
+ dbg("Error setting URB size");
+ goto err_free_netdev;
+ }
+
+ if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
+ 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) {
+ err("Error setting receive filter");
+ goto err_free_netdev;
+ }
+
+ dbg("Initializing net device.");
+
+ kaweth->intf = intf;
+
+ 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_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl);
+
+ 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) {
+ err("Error registering netdev.");
+ goto err_intfdata;
+ }
+
+ info("kaweth interface created at %s", kaweth->net->name);
+
+ 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;
+
+ info("Unregistering");
+
+ usb_set_intfdata(intf, NULL);
+ if (!kaweth) {
+ warn("unregistering non-existant device");
+ return;
+ }
+ netdev = kaweth->net;
+
+ 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 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
+ 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 = 0; /* shut up GCC */
+
+ 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)
+{
+ 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);
+
+
+
+
+
+
+
+
+