* (at your option) any later version.
*
* Supports the following devices:
- * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
- *
- * For questions or problems with this driver, contact Inside Out
- * Networks technical support, or Peter Berger <pberger@brimson.com>,
- * or Al Borchers <alborchers@steinerpoint.com>.
+ * EP/1 EP/2 EP/4
*
* Version history:
*
#include <linux/serial.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>
-#include <asm/semaphore.h>
#include <linux/usb.h>
-
#include "usb-serial.h"
#include "io_16654.h"
#include "io_usbvend.h"
#include "io_ti.h"
+static int debug;
+
/*
* Version Information
*/
-#define DRIVER_VERSION "v0.7"
+#define DRIVER_VERSION "v0.2"
#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
#define DRIVER_DESC "Edgeport USB Serial Driver"
#define TI_MODE_DOWNLOAD 2 // Made it to download mode
#define TI_MODE_TRANSITIONING 3 // Currently in boot mode but transitioning to download mode
-/* read urb state */
-#define EDGE_READ_URB_RUNNING 0
-#define EDGE_READ_URB_STOPPING 1
-#define EDGE_READ_URB_STOPPED 2
-
-#define EDGE_LOW_LATENCY 1
-#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
-
-#define EDGE_OUT_BUF_SIZE 1024
-
/* Product information read from the Edgeport */
struct product_info
__u8 hardware_type; // Type of hardware
} __attribute__((packed));
-/* circular buffer */
-struct edge_buf {
- unsigned int buf_size;
- char *buf_buf;
- char *buf_get;
- char *buf_put;
-};
struct edgeport_port {
__u16 uart_base;
happen */
struct edgeport_serial *edge_serial;
struct usb_serial_port *port;
- __u8 bUartMode; /* Port type, 0: RS232, etc. */
- spinlock_t ep_lock;
- int ep_read_urb_state;
- int ep_write_urb_in_use;
- struct edge_buf *ep_out_buf;
};
struct edgeport_serial {
struct product_info product_info;
u8 TI_I2C_Type; // Type of I2C in UMP
u8 TiReadI2C; // Set to TRUE if we have read the I2c in Boot Mode
- struct semaphore es_sem;
int num_ports_open;
struct usb_serial *serial;
};
/* Devices that this driver supports */
static struct usb_device_id edgeport_1port_id_table [] = {
{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
{ }
};
{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
-// The 4-port shows up as two 2-port devices
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
{ }
};
/* Devices that this driver supports */
static struct usb_device_id id_table_combined [] = {
{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
- { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
{ }
};
static struct EDGE_FIRMWARE_VERSION_INFO OperationalCodeImageVersion;
-static int debug;
-
static int TIStayInBootMode = 0;
-static int low_latency = EDGE_LOW_LATENCY;
-static int closing_wait = EDGE_CLOSING_WAIT;
static int ignore_cpu_rev = 0;
-static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length);
-
-static void stop_read(struct edgeport_port *edge_port);
-static int restart_read(struct edgeport_port *edge_port);
static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios);
-static void edge_send(struct usb_serial_port *port);
-
-/* circular buffer */
-static struct edge_buf *edge_buf_alloc(unsigned int size);
-static void edge_buf_free(struct edge_buf *eb);
-static void edge_buf_clear(struct edge_buf *eb);
-static unsigned int edge_buf_data_avail(struct edge_buf *eb);
-static unsigned int edge_buf_space_avail(struct edge_buf *eb);
-static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
- unsigned int count);
-static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
- unsigned int count);
-
static int TIReadVendorRequestSync (struct usb_device *dev,
__u8 request,
}
+
/* clear tx/rx buffers and fifo in TI UMP */
static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask)
{
status = TIReadVendorRequestSync (dev,
UMPC_MEMORY_READ, // Request
(__u16)address_type, // wValue (Address type)
- (__force __u16)be_start_address, // wIndex (Address to read)
+ be_start_address, // wIndex (Address to read)
buffer, // TransferBuffer
read_length); // TransferBufferLength
status = TISendVendorRequestSync (serial->serial->dev,
UMPC_MEMORY_WRITE, // Request
(__u16)address_type, // wValue
- (__force __u16)be_start_address, // wIndex
+ be_start_address, // wIndex
buffer, // TransferBuffer
write_length);
if (status) {
status = TISendVendorRequestSync (serial->serial->dev,
UMPC_MEMORY_WRITE, // Request
(__u16)address_type, // wValue
- (__force __u16)be_start_address, // wIndex
+ be_start_address, // wIndex
buffer, // TransferBuffer
write_length); // TransferBufferLength
if (status) {
- dev_err (&serial->serial->dev->dev, "%s - ERROR %d\n", __FUNCTION__, status);
+ dbg ("%s - ERROR %d", __FUNCTION__, status);
return status;
}
return bytes_left;
}
-static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int flush)
+static void TIChasePort(struct edgeport_port *port)
{
- int baud_rate;
- struct tty_struct *tty = port->port->tty;
- wait_queue_t wait;
- unsigned long flags;
-
- if (!timeout)
- timeout = (HZ*EDGE_CLOSING_WAIT)/100;
-
- /* wait for data to drain from the buffer */
- spin_lock_irqsave(&port->ep_lock, flags);
- init_waitqueue_entry(&wait, current);
- add_wait_queue(&tty->write_wait, &wait);
- for (;;) {
- set_current_state(TASK_INTERRUPTIBLE);
- if (edge_buf_data_avail(port->ep_out_buf) == 0
- || timeout == 0 || signal_pending(current)
- || !usb_get_intfdata(port->port->serial->interface)) /* disconnect */
- break;
- spin_unlock_irqrestore(&port->ep_lock, flags);
- timeout = schedule_timeout(timeout);
- spin_lock_irqsave(&port->ep_lock, flags);
- }
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&tty->write_wait, &wait);
- if (flush)
- edge_buf_clear(port->ep_out_buf);
- spin_unlock_irqrestore(&port->ep_lock, flags);
-
- /* wait for data to drain from the device */
- timeout += jiffies;
- while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
- && usb_get_intfdata(port->port->serial->interface)) { /* not disconnected */
- if (!TIIsTxActive(port))
+ int loops;
+ int last_count;
+ int write_size;
+
+restart_tx_loop:
+ // Base the LoopTime on the baud rate
+ if (port->baud_rate == 0)
+ port->baud_rate = 1200;
+
+ write_size = port->tx.count;
+ loops = max(100, (100*write_size)/(port->baud_rate/10));
+ dbg ("%s - write_size %d, baud %d loop = %d", __FUNCTION__,
+ write_size, port->baud_rate, loops);
+
+ while (1) {
+ // Save Last count
+ last_count = port->tx.count;
+
+ dbg ("%s - Tx Buffer Size = %d loops = %d", __FUNCTION__,
+ last_count, loops);
+
+ /* Is the Edgeport Buffer empty? */
+ if (port->tx.count == 0)
break;
+
+ /* Block the thread for 10ms */
msleep(10);
+
+ if (last_count == port->tx.count) {
+ /* No activity.. count down. */
+ --loops;
+ if (loops == 0) {
+ dbg ("%s - Wait for TxEmpty - TIMEOUT",
+ __FUNCTION__);
+ return;
+ }
+ } else {
+ /* Reset timeout value back to a minimum of 1 second */
+ dbg ("%s - Wait for TxEmpty Reset Count", __FUNCTION__);
+ goto restart_tx_loop;
+ }
}
- /* disconnected */
- if (!usb_get_intfdata(port->port->serial->interface))
- return;
+ dbg ("%s - Local Tx Buffer Empty -- Waiting for TI UMP to EMPTY X/Y and FIFO",
+ __FUNCTION__);
+
+ write_size = TIIsTxActive (port);
+ loops = max(50, (100*write_size)/(port->baud_rate/10));
+ dbg ("%s - write_size %d, baud %d loop = %d", __FUNCTION__,
+ write_size, port->baud_rate, loops);
+
+ while (1) {
+ /* This function takes 4 ms; */
+ if (!TIIsTxActive (port)) {
+ /* Delay a few char times */
+ msleep(50);
+ dbg ("%s - Empty", __FUNCTION__);
+ return;
+ }
- /* wait one more character time, based on baud rate */
- /* (TIIsTxActive doesn't seem to wait for the last byte) */
- if ((baud_rate=port->baud_rate) == 0)
- baud_rate = 50;
- msleep(max(1,(10000+baud_rate-1)/baud_rate));
+ --loops;
+ if (loops == 0) {
+ dbg ("%s - TIMEOUT", __FUNCTION__);
+ return;
+ }
+ }
}
static int TIChooseConfiguration (struct usb_device *dev)
struct ti_i2c_desc *rom_desc;
int start_address = 2;
__u8 *buffer;
- __u16 ttype;
rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
if (!rom_desc) {
return -ENOMEM;
}
- // Read the first byte (Signature0) must be 0x52 or 0x10
+ // Read the first byte (Signature0) must be 0x52
status = TIReadRom (serial, 0, 1, buffer);
if (status)
goto ExitTiValidateI2cImage;
- if (*buffer != UMP5152 && *buffer != UMP3410) {
+ if (*buffer != 0x52) {
dev_err (dev, "%s - invalid buffer signature\n", __FUNCTION__);
status = -ENODEV;
goto ExitTiValidateI2cImage;
dbg ("%s Type = 0x%x", __FUNCTION__, rom_desc->Type);
// Skip type 2 record
- ttype = rom_desc->Type & 0x0f;
- if ( ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
- && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO ) {
+ if ((rom_desc->Type & 0x0f) != I2C_DESC_TYPE_FIRMWARE_BASIC) {
// Read the descriptor data
status = TIReadRom(serial,
start_address+sizeof(struct ti_i2c_desc),
memcpy (buffer + sizeof(struct ti_i2c_firmware_rec),
&PagableOperationalCodeImage[sizeof(struct ti_i2c_image_header)],
- le16_to_cpu(img_header->Length));
+ img_header->Length);
for (i=0; i < buffer_size; i++) {
cs = (__u8)(cs + buffer[i]);
dbg ("%s - read 2 status error = %d", __FUNCTION__, status);
else
dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
- if ((!status) && (data == UMP5152 || data == UMP3410)) {
+ if ((!status) && data == 0x52) {
dbg ("%s - ROM_TYPE_II", __FUNCTION__);
serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
return 0;
dbg ("%s - read 3 status error = %d", __FUNCTION__, status);
else
dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
- if ((!status) && (data == UMP5152 || data == UMP3410)) {
+ if ((!status) && data == 0x52) {
dbg ("%s - ROM_TYPE_III", __FUNCTION__);
serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
return 0;
interface = &serial->serial->interface->cur_altsetting->desc;
if (!interface) {
- dev_err (dev, "%s - no interface set, error!\n", __FUNCTION__);
+ dev_err (&serial->serial->dev->dev, "%s - no interface set, error!", __FUNCTION__);
return -ENODEV;
}
dbg ("%s - Update complete 0x%x", __FUNCTION__, status);
if (status) {
- dev_err (dev, "%s - UMPC_COPY_DNLD_TO_I2C failed\n", __FUNCTION__);
+ dbg ("%s - UMPC_COPY_DNLD_TO_I2C failed", __FUNCTION__);
kfree (rom_desc);
kfree (ti_manuf_desc);
return status;
header = (struct ti_i2c_image_header *)buffer;
// update length and checksum after padding
- header->Length = cpu_to_le16((__u16)(buffer_size - sizeof(struct ti_i2c_image_header)));
+ header->Length = (__u16)(buffer_size - sizeof(struct ti_i2c_image_header));
header->CheckSum = cs;
// Download the operational code
static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr)
{
struct async_icount *icount;
- struct tty_struct *tty;
dbg ("%s - %02x", __FUNCTION__, msr);
/* Save the new modem status */
edge_port->shadow_msr = msr & 0xf0;
- tty = edge_port->port->tty;
- /* handle CTS flow control */
- if (tty && C_CRTSCTS(tty)) {
- if (msr & EDGEPORT_MSR_CTS) {
- tty->hw_stopped = 0;
- tty_wakeup(tty);
- } else {
- tty->hw_stopped = 1;
- }
- }
-
return;
}
}
/* Place LSR data byte into Rx buffer */
- if (lsr_data && edge_port->port->tty)
- edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1);
+ if (lsr_data && edge_port->port->tty) {
+ tty_insert_flip_char(edge_port->port->tty, data, 0);
+ tty_flip_buffer_push(edge_port->port->tty);
+ }
/* update input line counters */
icount = &edge_port->icount;
dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
return;
default:
- dev_err(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __FUNCTION__, urb->status);
+ dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
goto exit;
}
struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
unsigned char *data = urb->transfer_buffer;
struct tty_struct *tty;
- int status = 0;
+ int status;
+ int i;
int port_number;
dbg("%s", __FUNCTION__);
- switch (urb->status) {
- case 0:
- /* success */
- break;
- case -ECONNRESET:
- case -ENOENT:
- case -ESHUTDOWN:
- /* this urb is terminated, clean up */
- dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
- return;
- default:
- dev_err (&urb->dev->dev,"%s - nonzero read bulk status received: %d\n",
- __FUNCTION__, urb->status );
- }
-
- if (urb->status == -EPIPE)
- goto exit;
-
if (urb->status) {
- dev_err(&urb->dev->dev,"%s - stopping read!\n", __FUNCTION__);
+ dbg ("%s - nonzero read bulk status received: %d",
+ __FUNCTION__, urb->status);
+
+ if (urb->status == -EPIPE) {
+ /* clear any problem that might have happened on this pipe */
+ usb_clear_halt (edge_port->port->serial->dev, urb->pipe);
+ goto exit;
+ }
return;
}
if (edge_port->close_pending) {
dbg ("%s - close is pending, dropping data on the floor.", __FUNCTION__);
} else {
- edge_tty_recv(&edge_port->port->dev, tty, data, urb->actual_length);
+ for (i = 0; i < urb->actual_length ; ++i) {
+ /* if we insert more than TTY_FLIPBUF_SIZE characters,
+ * we drop them. */
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ tty_flip_buffer_push(tty);
+ }
+ /* this doesn't actually push the data through unless
+ * tty->low_latency is set */
+ tty_insert_flip_char(tty, data[i], 0);
+ }
+ tty_flip_buffer_push(tty);
}
edge_port->icount.rx += urb->actual_length;
}
exit:
- /* continue read unless stopped */
- spin_lock(&edge_port->ep_lock);
- if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
- urb->dev = edge_port->port->serial->dev;
- status = usb_submit_urb(urb, GFP_ATOMIC);
- } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
- edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
- }
- spin_unlock(&edge_port->ep_lock);
+ /* continue always trying to read */
+ status = usb_submit_urb (urb, GFP_ATOMIC);
if (status)
dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
__FUNCTION__, status);
}
-static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length)
-{
- int cnt;
-
- do {
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
- tty_flip_buffer_push(tty);
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
- dev_err(dev, "%s - dropping data, %d bytes lost\n",
- __FUNCTION__, length);
- return;
- }
- }
- cnt = min(length, TTY_FLIPBUF_SIZE - tty->flip.count);
- memcpy(tty->flip.char_buf_ptr, data, cnt);
- memset(tty->flip.flag_buf_ptr, 0, cnt);
- tty->flip.char_buf_ptr += cnt;
- tty->flip.flag_buf_ptr += cnt;
- tty->flip.count += cnt;
- data += cnt;
- length -= cnt;
- } while (length > 0);
-
- tty_flip_buffer_push(tty);
-}
-
static void edge_bulk_out_callback (struct urb *urb, struct pt_regs *regs)
{
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
- struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ struct tty_struct *tty;
dbg ("%s - port %d", __FUNCTION__, port->number);
- edge_port->ep_write_urb_in_use = 0;
+ if (urb->status) {
+ dbg ("%s - nonzero write bulk status received: %d",
+ __FUNCTION__, urb->status);
- switch (urb->status) {
- case 0:
- /* success */
- break;
- case -ECONNRESET:
- case -ENOENT:
- case -ESHUTDOWN:
- /* this urb is terminated, clean up */
- dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
+ if (urb->status == -EPIPE) {
+ /* clear any problem that might have happened on this pipe */
+ usb_clear_halt (port->serial->dev, urb->pipe);
+ }
return;
- default:
- dev_err (&urb->dev->dev,"%s - nonzero write bulk status received: %d\n",
- __FUNCTION__, urb->status);
}
- /* send any buffered data */
- edge_send(port);
+ tty = port->tty;
+ if (tty) {
+ /* let the tty driver wakeup if it has a special write_wakeup function */
+ tty_wakeup(tty);
+ }
}
static int edge_open (struct usb_serial_port *port, struct file * filp)
if (edge_port == NULL)
return -ENODEV;
+ /* force low_latency on so that our tty_push actually forces the data through,
+ otherwise it is scheduled, and with high data rates (like with OHCI) data
+ can get lost. */
if (port->tty)
- port->tty->low_latency = low_latency;
+ port->tty->low_latency = 1;
port_number = port->number - port->serial->minor;
switch (port_number) {
/* turn off loopback */
status = TIClearLoopBack (edge_port);
- if (status) {
- dev_err(&port->dev,"%s - cannot send clear loopback command, %d\n",
- __FUNCTION__, status);
+ if (status)
return status;
- }
/* set up the port settings */
edge_set_termios (port, NULL);
open_settings,
NULL,
0);
- if (status) {
- dev_err(&port->dev,"%s - cannot send open command, %d\n", __FUNCTION__, status);
+ if (status)
return status;
- }
/* Start the DMA? */
status = TIWriteCommandSync (dev,
0,
NULL,
0);
- if (status) {
- dev_err(&port->dev,"%s - cannot send start DMA command, %d\n", __FUNCTION__, status);
+ if (status)
return status;
- }
/* Clear TX and RX buffers in UMP */
status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
- if (status) {
- dev_err(&port->dev,"%s - cannot send clear buffers command, %d\n", __FUNCTION__, status);
+ if (status)
return status;
- }
/* Read Initial MSR */
status = TIReadVendorRequestSync (dev,
(__u16)(UMPM_UART1_PORT + port_number), // wIndex (Address)
&edge_port->shadow_msr, // TransferBuffer
1); // TransferBufferLength
- if (status) {
- dev_err(&port->dev,"%s - cannot send read MSR command, %d\n", __FUNCTION__, status);
+ if (status)
return status;
- }
dbg ("ShadowMSR 0x%X", edge_port->shadow_msr);
- /* Set Initial MCR */
- edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
- dbg ("ShadowMCR 0x%X", edge_port->shadow_mcr);
-
edge_serial = edge_port->edge_serial;
- if (down_interruptible(&edge_serial->es_sem))
- return -ERESTARTSYS;
if (edge_serial->num_ports_open == 0) {
/* we are the first port to be opened, let's post the interrupt urb */
urb = edge_serial->serial->port[0]->interrupt_in_urb;
if (!urb) {
dev_err (&port->dev, "%s - no interrupt urb present, exiting\n", __FUNCTION__);
- status = -EINVAL;
- goto up_es_sem;
+ return -EINVAL;
}
urb->complete = edge_interrupt_callback;
urb->context = edge_serial;
status = usb_submit_urb (urb, GFP_KERNEL);
if (status) {
dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __FUNCTION__, status);
- goto up_es_sem;
+ return status;
}
}
urb = port->read_urb;
if (!urb) {
dev_err (&port->dev, "%s - no read urb present, exiting\n", __FUNCTION__);
- status = -EINVAL;
- goto unlink_int_urb;
+ return -EINVAL;
}
- edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
urb->complete = edge_bulk_in_callback;
urb->context = edge_port;
urb->dev = dev;
status = usb_submit_urb (urb, GFP_KERNEL);
if (status) {
dev_err (&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status);
- goto unlink_int_urb;
+ return status;
}
++edge_serial->num_ports_open;
dbg("%s - exited", __FUNCTION__);
- goto up_es_sem;
-
-unlink_int_urb:
- if (edge_port->edge_serial->num_ports_open == 0)
- usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
-up_es_sem:
- up(&edge_serial->es_sem);
- return status;
+ return 0;
}
-static void edge_close (struct usb_serial_port *port, struct file *filp)
+static void edge_close (struct usb_serial_port *port, struct file * filp)
{
struct edgeport_serial *edge_serial;
struct edgeport_port *edge_port;
* this flag and dump add read data */
edge_port->close_pending = 1;
- /* chase the port close and flush */
- TIChasePort (edge_port, (HZ*closing_wait)/100, 1);
+ /* chase the port close */
+ TIChasePort (edge_port);
- usb_kill_urb(port->read_urb);
- usb_kill_urb(port->write_urb);
- edge_port->ep_write_urb_in_use = 0;
+ usb_unlink_urb (port->read_urb);
/* assuming we can still talk to the device,
* send a close port command to it */
0,
NULL,
0);
- down(&edge_serial->es_sem);
--edge_port->edge_serial->num_ports_open;
if (edge_port->edge_serial->num_ports_open <= 0) {
/* last port is now closed, let's shut down our interrupt urb */
- usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
+ usb_unlink_urb (port->serial->port[0]->interrupt_in_urb);
edge_port->edge_serial->num_ports_open = 0;
}
- up(&edge_serial->es_sem);
edge_port->close_pending = 0;
dbg("%s - exited", __FUNCTION__);
}
-static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count)
+static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *data, int count)
{
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
- unsigned long flags;
+ int result;
dbg("%s - port %d", __FUNCTION__, port->number);
return -ENODEV;
if (edge_port->close_pending == 1)
return -ENODEV;
-
- spin_lock_irqsave(&edge_port->ep_lock, flags);
- count = edge_buf_put(edge_port->ep_out_buf, data, count);
- spin_unlock_irqrestore(&edge_port->ep_lock, flags);
-
- edge_send(port);
-
- return count;
-}
-
-static void edge_send(struct usb_serial_port *port)
-{
- int count, result;
- struct edgeport_port *edge_port = usb_get_serial_port_data(port);
- struct tty_struct *tty = port->tty;
- unsigned long flags;
-
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- spin_lock_irqsave(&edge_port->ep_lock, flags);
-
- if (edge_port->ep_write_urb_in_use) {
- spin_unlock_irqrestore(&edge_port->ep_lock, flags);
- return;
+
+ if (port->write_urb->status == -EINPROGRESS) {
+ dbg ("%s - already writing", __FUNCTION__);
+ return 0;
}
- count = edge_buf_get(edge_port->ep_out_buf,
- port->write_urb->transfer_buffer,
- port->bulk_out_size);
+ count = min (count, port->bulk_out_size);
- if (count == 0) {
- spin_unlock_irqrestore(&edge_port->ep_lock, flags);
- return;
+ if (from_user) {
+ if (copy_from_user(port->write_urb->transfer_buffer, data, count))
+ return -EFAULT;
+ } else {
+ memcpy (port->write_urb->transfer_buffer, data, count);
}
- edge_port->ep_write_urb_in_use = 1;
-
- spin_unlock_irqrestore(&edge_port->ep_lock, flags);
-
usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, port->write_urb->transfer_buffer);
/* set up our urb */
/* send the data out the bulk port */
result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
- if (result) {
+ if (result)
dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result);
- edge_port->ep_write_urb_in_use = 0;
- // TODO: reschedule edge_send
- } else {
+ else
+ result = count;
+
+ if (result > 0)
edge_port->icount.tx += count;
- }
- /* wakeup any process waiting for writes to complete */
- /* there is now more room in the buffer for new writes */
- if (tty) {
- /* let the tty driver wakeup if it has a special write_wakeup function */
- tty_wakeup(tty);
- }
+ return result;
}
static int edge_write_room (struct usb_serial_port *port)
{
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
int room = 0;
- unsigned long flags;
- dbg("%s - port %d", __FUNCTION__, port->number);
+ dbg("%s", __FUNCTION__);
if (edge_port == NULL)
return -ENODEV;
if (edge_port->close_pending == 1)
return -ENODEV;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
- spin_lock_irqsave(&edge_port->ep_lock, flags);
- room = edge_buf_space_avail(edge_port->ep_out_buf);
- spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+ if (port->write_urb->status != -EINPROGRESS)
+ room = port->bulk_out_size;
dbg("%s - returns %d", __FUNCTION__, room);
return room;
{
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
int chars = 0;
- unsigned long flags;
- dbg("%s - port %d", __FUNCTION__, port->number);
+ dbg("%s", __FUNCTION__);
if (edge_port == NULL)
return -ENODEV;
if (edge_port->close_pending == 1)
return -ENODEV;
- spin_lock_irqsave(&edge_port->ep_lock, flags);
- chars = edge_buf_data_avail(edge_port->ep_out_buf);
- spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (port->write_urb->status == -EINPROGRESS)
+ chars = port->write_urb->transfer_buffer_length;
dbg ("%s - returns %d", __FUNCTION__, chars);
return chars;
dbg ("%s - no tty available", __FUNCTION__);
return;
}
-
/* if we are implementing XON/XOFF, send the stop character */
if (I_IXOFF(tty)) {
unsigned char stop_char = STOP_CHAR(tty);
- status = edge_write (port, &stop_char, 1);
+ status = edge_write (port, 0, &stop_char, 1);
if (status <= 0) {
- dev_err(&port->dev, "%s - failed to write stop character, %d\n", __FUNCTION__, status);
+ return;
}
}
- /* if we are implementing RTS/CTS, stop reads */
- /* and the Edgeport will clear the RTS line */
- if (C_CRTSCTS(tty))
- stop_read(edge_port);
+ /* if we are implementing RTS/CTS, toggle that line */
+ if (tty->termios->c_cflag & CRTSCTS) {
+ status = TIClearRts (edge_port);
+ }
+ usb_unlink_urb (port->read_urb);
}
static void edge_unthrottle (struct usb_serial_port *port)
/* if we are implementing XON/XOFF, send the start character */
if (I_IXOFF(tty)) {
unsigned char start_char = START_CHAR(tty);
- status = edge_write (port, &start_char, 1);
+ status = edge_write (port, 0, &start_char, 1);
if (status <= 0) {
- dev_err(&port->dev, "%s - failed to write start character, %d\n", __FUNCTION__, status);
+ return;
}
}
- /* if we are implementing RTS/CTS, restart reads */
- /* are the Edgeport will assert the RTS line */
- if (C_CRTSCTS(tty)) {
- status = restart_read(edge_port);
- if (status)
- dev_err(&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status);
+ /* if we are implementing RTS/CTS, toggle that line */
+ if (tty->termios->c_cflag & CRTSCTS) {
+ status = TISetRts (edge_port);
}
-}
-
-static void stop_read(struct edgeport_port *edge_port)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&edge_port->ep_lock, flags);
-
- if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
- edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
- edge_port->shadow_mcr &= ~MCR_RTS;
-
- spin_unlock_irqrestore(&edge_port->ep_lock, flags);
-}
-
-static int restart_read(struct edgeport_port *edge_port)
-{
- struct urb *urb;
- int status = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&edge_port->ep_lock, flags);
-
- if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
- urb = edge_port->port->read_urb;
- urb->complete = edge_bulk_in_callback;
- urb->context = edge_port;
- urb->dev = edge_port->port->serial->dev;
- status = usb_submit_urb(urb, GFP_KERNEL);
+ port->read_urb->dev = port->serial->dev;
+ status = usb_submit_urb (port->read_urb, GFP_ATOMIC);
+ if (status) {
+ dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __FUNCTION__, status);
}
- edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
- edge_port->shadow_mcr |= MCR_RTS;
-
- spin_unlock_irqrestore(&edge_port->ep_lock, flags);
-
- return status;
}
+
static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
{
struct ump_uart_config *config;
struct tty_struct *tty;
int baud;
+ int round;
unsigned cflag;
int status;
int port_number = edge_port->port->number - edge_port->port->serial->minor;
/* These flags must be set */
config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
- config->bUartMode = (__u8)(edge_port->bUartMode);
+ config->bUartMode = 0;
switch (cflag & CSIZE) {
case CS5:
dbg("%s - RTS/CTS is enabled", __FUNCTION__);
} else {
dbg("%s - RTS/CTS is disabled", __FUNCTION__);
- tty->hw_stopped = 0;
- restart_read(edge_port);
}
/* if we are implementing XON/XOFF, set the start and stop character in the device */
/* pick a default, any default... */
baud = 9600;
}
- edge_port->baud_rate = baud;
- config->wBaudRate = (__u16)((461550L + baud/2) / baud);
+ config->wBaudRate = (__u16)(461550L / baud);
+ round = 4615500L / baud;
+ if ((round - (config->wBaudRate * 10)) >= 5)
+ config->wBaudRate++;
dbg ("%s - baud rate = %d, wBaudRate = %d", __FUNCTION__, baud, config->wBaudRate);
cflag = tty->termios->c_cflag;
/* check that they really want us to change something */
if (old_termios) {
- if (cflag == old_termios->c_cflag &&
- tty->termios->c_iflag == old_termios->c_iflag) {
+ if ((cflag == old_termios->c_cflag) &&
+ (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
dbg ("%s - nothing to change", __FUNCTION__);
return;
}
}
dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
- tty->termios->c_cflag, tty->termios->c_iflag);
+ tty->termios->c_cflag,
+ RELEVANT_IFLAG(tty->termios->c_iflag));
if (old_termios) {
dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
- old_termios->c_cflag, old_termios->c_iflag);
+ old_termios->c_cflag,
+ RELEVANT_IFLAG(old_termios->c_iflag));
}
dbg("%s - port %d", __FUNCTION__, port->number);
static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
{
- struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
unsigned int mcr;
dbg("%s - port %d", __FUNCTION__, port->number);
static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
{
- struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
unsigned int result = 0;
unsigned int msr;
unsigned int mcr;
tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
tmp.baud_base = 9600;
tmp.close_delay = 5*HZ;
- tmp.closing_wait = closing_wait;
+ tmp.closing_wait = 30*HZ;
// tmp.custom_divisor = state->custom_divisor;
// tmp.hub6 = state->hub6;
// tmp.io_type = state->io_type;
dbg ("%s - state = %d", __FUNCTION__, break_state);
/* chase the port close */
- TIChasePort (edge_port, 0, 0);
+ TIChasePort (edge_port);
if (break_state == -1) {
status = TISetBreak (edge_port);
return -ENOMEM;
}
memset (edge_serial, 0, sizeof(struct edgeport_serial));
- sema_init(&edge_serial->es_sem, 1);
edge_serial->serial = serial;
usb_set_serial_data(serial, edge_serial);
edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
if (edge_port == NULL) {
dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
- goto cleanup;
+ return -ENOMEM;
}
memset (edge_port, 0, sizeof(struct edgeport_port));
- spin_lock_init(&edge_port->ep_lock);
- edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE);
- if (edge_port->ep_out_buf == NULL) {
- dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
- kfree(edge_port);
- goto cleanup;
- }
edge_port->port = serial->port[i];
edge_port->edge_serial = edge_serial;
usb_set_serial_port_data(serial->port[i], edge_port);
- edge_port->bUartMode = 0; /* Default is RS232 */
}
return 0;
-
-cleanup:
- for (--i; i>=0; --i) {
- edge_port = usb_get_serial_port_data(serial->port[i]);
- edge_buf_free(edge_port->ep_out_buf);
- kfree(edge_port);
- usb_set_serial_port_data(serial->port[i], NULL);
- }
- kfree (edge_serial);
- usb_set_serial_data(serial, NULL);
- return -ENOMEM;
}
static void edge_shutdown (struct usb_serial *serial)
{
int i;
- struct edgeport_port *edge_port;
dbg ("%s", __FUNCTION__);
for (i=0; i < serial->num_ports; ++i) {
- edge_port = usb_get_serial_port_data(serial->port[i]);
- if (edge_port) {
- edge_buf_free(edge_port->ep_out_buf);
- kfree(edge_port);
- }
+ kfree (usb_get_serial_port_data(serial->port[i]));
usb_set_serial_port_data(serial->port[i], NULL);
}
kfree (usb_get_serial_data(serial));
}
-/* Circular Buffer */
-
-/*
- * edge_buf_alloc
- *
- * Allocate a circular buffer and all associated memory.
- */
-
-static struct edge_buf *edge_buf_alloc(unsigned int size)
-{
- struct edge_buf *eb;
-
-
- if (size == 0)
- return NULL;
-
- eb = (struct edge_buf *)kmalloc(sizeof(struct edge_buf), GFP_KERNEL);
- if (eb == NULL)
- return NULL;
-
- eb->buf_buf = kmalloc(size, GFP_KERNEL);
- if (eb->buf_buf == NULL) {
- kfree(eb);
- return NULL;
- }
-
- eb->buf_size = size;
- eb->buf_get = eb->buf_put = eb->buf_buf;
-
- return eb;
-}
-
-
-/*
- * edge_buf_free
- *
- * Free the buffer and all associated memory.
- */
-
-void edge_buf_free(struct edge_buf *eb)
-{
- if (eb != NULL) {
- if (eb->buf_buf != NULL)
- kfree(eb->buf_buf);
- kfree(eb);
- }
-}
-
-
-/*
- * edge_buf_clear
- *
- * Clear out all data in the circular buffer.
- */
-
-static void edge_buf_clear(struct edge_buf *eb)
-{
- if (eb != NULL)
- eb->buf_get = eb->buf_put;
- /* equivalent to a get of all data available */
-}
-
-
-/*
- * edge_buf_data_avail
- *
- * Return the number of bytes of data available in the circular
- * buffer.
- */
-
-static unsigned int edge_buf_data_avail(struct edge_buf *eb)
-{
- if (eb != NULL)
- return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size);
- else
- return 0;
-}
-
-
-/*
- * edge_buf_space_avail
- *
- * Return the number of bytes of space available in the circular
- * buffer.
- */
-
-static unsigned int edge_buf_space_avail(struct edge_buf *eb)
-{
- if (eb != NULL)
- return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size);
- else
- return 0;
-}
-
-
-/*
- * edge_buf_put
- *
- * Copy data data from a user buffer and put it into the circular buffer.
- * Restrict to the amount of space available.
- *
- * Return the number of bytes copied.
- */
-
-static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
- unsigned int count)
-{
- unsigned int len;
-
-
- if (eb == NULL)
- return 0;
-
- len = edge_buf_space_avail(eb);
- if (count > len)
- count = len;
-
- if (count == 0)
- return 0;
-
- len = eb->buf_buf + eb->buf_size - eb->buf_put;
- if (count > len) {
- memcpy(eb->buf_put, buf, len);
- memcpy(eb->buf_buf, buf+len, count - len);
- eb->buf_put = eb->buf_buf + count - len;
- } else {
- memcpy(eb->buf_put, buf, count);
- if (count < len)
- eb->buf_put += count;
- else /* count == len */
- eb->buf_put = eb->buf_buf;
- }
-
- return count;
-}
-
-
-/*
- * edge_buf_get
- *
- * Get data from the circular buffer and copy to the given buffer.
- * Restrict to the amount of data available.
- *
- * Return the number of bytes copied.
- */
-
-static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
- unsigned int count)
-{
- unsigned int len;
-
-
- if (eb == NULL)
- return 0;
-
- len = edge_buf_data_avail(eb);
- if (count > len)
- count = len;
-
- if (count == 0)
- return 0;
-
- len = eb->buf_buf + eb->buf_size - eb->buf_get;
- if (count > len) {
- memcpy(buf, eb->buf_get, len);
- memcpy(buf+len, eb->buf_buf, count - len);
- eb->buf_get = eb->buf_buf + count - len;
- } else {
- memcpy(buf, eb->buf_get, count);
- if (count < len)
- eb->buf_get += count;
- else /* count == len */
- eb->buf_get = eb->buf_buf;
- }
-
- return count;
-}
-
-
static struct usb_serial_device_type edgeport_1port_device = {
.owner = THIS_MODULE,
.name = "Edgeport TI 1 port adapter",
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
.break_ctl = edge_break,
- .read_int_callback = edge_interrupt_callback,
- .read_bulk_callback = edge_bulk_in_callback,
- .write_bulk_callback = edge_bulk_out_callback,
};
static struct usb_serial_device_type edgeport_2port_device = {
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
.break_ctl = edge_break,
- .read_int_callback = edge_interrupt_callback,
- .read_bulk_callback = edge_bulk_in_callback,
- .write_bulk_callback = edge_bulk_out_callback,
};
module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
-module_param(low_latency, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(low_latency, "Low latency enabled or not");
-
-module_param(closing_wait, int, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
-
module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ignore_cpu_rev, "Ignore the cpu revision when connecting to a device");
git://git.onelab.eu / linux-2.6.git / blobdiff