--- /dev/null
+/*
+ * USB Serial Converter Generic functions
+ *
+ * Copyright (C) 1999 - 2002 Greg Kroah-Hartman (greg@kroah.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#ifdef CONFIG_USB_SERIAL_DEBUG
+ static int debug = 1;
+#else
+ static int debug;
+#endif
+
+#include "usb-serial.h"
+
+
+#ifdef CONFIG_USB_SERIAL_GENERIC
+static __u16 vendor = 0x05f9;
+static __u16 product = 0xffff;
+
+MODULE_PARM(vendor, "h");
+MODULE_PARM_DESC(vendor, "User specified USB idVendor");
+
+MODULE_PARM(product, "h");
+MODULE_PARM_DESC(product, "User specified USB idProduct");
+
+static struct usb_device_id generic_device_ids[2]; /* Initially all zeroes. */
+
+/* All of the device info needed for the Generic Serial Converter */
+struct usb_serial_device_type usb_serial_generic_device = {
+ .owner = THIS_MODULE,
+ .name = "Generic",
+ .id_table = generic_device_ids,
+ .num_interrupt_in = NUM_DONT_CARE,
+ .num_bulk_in = NUM_DONT_CARE,
+ .num_bulk_out = NUM_DONT_CARE,
+ .num_ports = 1,
+ .shutdown = usb_serial_generic_shutdown,
+};
+#endif
+
+int usb_serial_generic_register (int _debug)
+{
+ int retval = 0;
+
+ debug = _debug;
+#ifdef CONFIG_USB_SERIAL_GENERIC
+ generic_device_ids[0].idVendor = vendor;
+ generic_device_ids[0].idProduct = product;
+ generic_device_ids[0].match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_PRODUCT;
+
+ /* register our generic driver with ourselves */
+ retval = usb_serial_register (&usb_serial_generic_device);
+#endif
+ return retval;
+}
+
+void usb_serial_generic_deregister (void)
+{
+#ifdef CONFIG_USB_SERIAL_GENERIC
+ /* remove our generic driver */
+ usb_serial_deregister (&usb_serial_generic_device);
+#endif
+}
+
+int usb_serial_generic_open (struct usb_serial_port *port, struct file *filp)
+{
+ struct usb_serial *serial = port->serial;
+ int result = 0;
+
+ if (port_paranoia_check (port, __FUNCTION__))
+ return -ENODEV;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ /* 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 = 1;
+
+ /* if we have a bulk interrupt, start reading from it */
+ if (serial->num_bulk_in) {
+ /* Start reading from the device */
+ usb_fill_bulk_urb (port->read_urb, serial->dev,
+ usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
+ port->read_urb->transfer_buffer,
+ port->read_urb->transfer_buffer_length,
+ ((serial->type->read_bulk_callback) ?
+ serial->type->read_bulk_callback :
+ usb_serial_generic_read_bulk_callback),
+ port);
+ result = usb_submit_urb(port->read_urb, GFP_KERNEL);
+ if (result)
+ err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
+ }
+
+ return result;
+}
+
+static void generic_cleanup (struct usb_serial_port *port)
+{
+ struct usb_serial *serial = port->serial;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (serial->dev) {
+ /* shutdown any bulk reads that might be going on */
+ if (serial->num_bulk_out)
+ usb_unlink_urb (port->write_urb);
+ if (serial->num_bulk_in)
+ usb_unlink_urb (port->read_urb);
+ }
+}
+
+void usb_serial_generic_close (struct usb_serial_port *port, struct file * filp)
+{
+ dbg("%s - port %d", __FUNCTION__, port->number);
+ generic_cleanup (port);
+}
+
+int usb_serial_generic_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count)
+{
+ struct usb_serial *serial = port->serial;
+ int result;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (count == 0) {
+ dbg("%s - write request of 0 bytes", __FUNCTION__);
+ return (0);
+ }
+
+ /* only do something if we have a bulk out endpoint */
+ if (serial->num_bulk_out) {
+ if (port->write_urb->status == -EINPROGRESS) {
+ dbg("%s - already writing", __FUNCTION__);
+ return (0);
+ }
+
+ count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
+
+ if (from_user) {
+ if (copy_from_user(port->write_urb->transfer_buffer, buf, count))
+ return -EFAULT;
+ }
+ else {
+ memcpy (port->write_urb->transfer_buffer, buf, count);
+ }
+
+ usb_serial_debug_data (__FILE__, __FUNCTION__, count, port->write_urb->transfer_buffer);
+
+ /* set up our urb */
+ usb_fill_bulk_urb (port->write_urb, serial->dev,
+ usb_sndbulkpipe (serial->dev,
+ port->bulk_out_endpointAddress),
+ port->write_urb->transfer_buffer, count,
+ ((serial->type->write_bulk_callback) ?
+ serial->type->write_bulk_callback :
+ usb_serial_generic_write_bulk_callback), port);
+
+ /* send the data out the bulk port */
+ result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+ if (result)
+ err("%s - failed submitting write urb, error %d", __FUNCTION__, result);
+ else
+ result = count;
+
+ return result;
+ }
+
+ /* no bulk out, so return 0 bytes written */
+ return (0);
+}
+
+int usb_serial_generic_write_room (struct usb_serial_port *port)
+{
+ struct usb_serial *serial = port->serial;
+ int room = 0;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (serial->num_bulk_out) {
+ if (port->write_urb->status != -EINPROGRESS)
+ room = port->bulk_out_size;
+ }
+
+ dbg("%s - returns %d", __FUNCTION__, room);
+ return (room);
+}
+
+int usb_serial_generic_chars_in_buffer (struct usb_serial_port *port)
+{
+ struct usb_serial *serial = port->serial;
+ int chars = 0;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (serial->num_bulk_out) {
+ if (port->write_urb->status == -EINPROGRESS)
+ chars = port->write_urb->transfer_buffer_length;
+ }
+
+ dbg("%s - returns %d", __FUNCTION__, chars);
+ return (chars);
+}
+
+void usb_serial_generic_read_bulk_callback (struct urb *urb)
+{
+ struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+ struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+ struct tty_struct *tty;
+ unsigned char *data = urb->transfer_buffer;
+ int i;
+ int result;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (!serial) {
+ dbg("%s - bad serial pointer, exiting", __FUNCTION__);
+ return;
+ }
+
+ if (urb->status) {
+ dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
+ return;
+ }
+
+ usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data);
+
+ tty = port->tty;
+ if (tty && 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);
+ }
+
+ /* Continue trying to always read */
+ usb_fill_bulk_urb (port->read_urb, serial->dev,
+ usb_rcvbulkpipe (serial->dev,
+ port->bulk_in_endpointAddress),
+ port->read_urb->transfer_buffer,
+ port->read_urb->transfer_buffer_length,
+ ((serial->type->read_bulk_callback) ?
+ serial->type->read_bulk_callback :
+ usb_serial_generic_read_bulk_callback), port);
+ result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+ if (result)
+ err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
+}
+
+void usb_serial_generic_write_bulk_callback (struct urb *urb)
+{
+ struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+ struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (!serial) {
+ dbg("%s - bad serial pointer, exiting", __FUNCTION__);
+ return;
+ }
+
+ if (urb->status) {
+ dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
+ return;
+ }
+
+ usb_serial_port_softint((void *)port);
+
+ schedule_work(&port->work);
+}
+
+void usb_serial_generic_shutdown (struct usb_serial *serial)
+{
+ int i;
+
+ dbg("%s", __FUNCTION__);
+
+ /* stop reads and writes on all ports */
+ for (i=0; i < serial->num_ports; ++i) {
+ generic_cleanup (&serial->port[i]);
+ }
+}
+
/*
* Version Information
*/
-#define DRIVER_VERSION "v1.7"
+#define DRIVER_VERSION "v1.8"
#define DRIVER_AUTHOR "Greg Kroah-Hartman, greg@kroah.com, http://www.kroah.com/linux/"
#define DRIVER_DESC "USB Serial Driver core"
-/* function prototypes for a "generic" type serial converter (no flow control, not all endpoints needed) */
-/* need to always compile these in, as some of the other devices use these functions as their own. */
-/* if a driver does not provide a function pointer, the generic function will be called. */
-int usb_serial_generic_open (struct usb_serial_port *port, struct file *filp);
-int usb_serial_generic_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
-static void generic_close (struct usb_serial_port *port, struct file *filp);
-static int generic_write_room (struct usb_serial_port *port);
-static int generic_chars_in_buffer (struct usb_serial_port *port);
-static void generic_read_bulk_callback (struct urb *urb);
-static void generic_write_bulk_callback (struct urb *urb);
-static void generic_shutdown (struct usb_serial *serial);
-
#ifdef CONFIG_USB_SERIAL_GENERIC
-static __u16 vendor = 0x05f9;
-static __u16 product = 0xffff;
-
-static struct usb_device_id generic_device_ids[2]; /* Initially all zeroes. */
-
-/* All of the device info needed for the Generic Serial Converter */
-static struct usb_serial_device_type generic_device = {
- .owner = THIS_MODULE,
- .name = "Generic",
- .id_table = generic_device_ids,
- .num_interrupt_in = NUM_DONT_CARE,
- .num_bulk_in = NUM_DONT_CARE,
- .num_bulk_out = NUM_DONT_CARE,
- .num_ports = 1,
- .shutdown = generic_shutdown,
-};
-
/* we want to look at all devices, as the vendor/product id can change
* depending on the command line argument */
static struct usb_device_id generic_serial_ids[] = {
{}
};
-static int generic_register (void)
-{
- generic_device_ids[0].idVendor = vendor;
- generic_device_ids[0].idProduct = product;
- generic_device_ids[0].match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_PRODUCT;
-
- /* register our generic driver with ourselves */
- return usb_serial_register (&generic_device);
-}
-
-static void generic_deregister (void)
-{
- /* remove our generic driver */
- usb_serial_deregister (&generic_device);
-}
-
-#else
-
-static inline int generic_register (void) { return 0; }
-static inline void generic_deregister (void) { }
-
#endif /* CONFIG_USB_SERIAL_GENERIC */
/* Driver structure we register with the USB core */
if (port->serial->type->close)
port->serial->type->close(port, filp);
else
- generic_close(port, filp);
+ usb_serial_generic_close(port, filp);
port->open_count = 0;
}
if (serial->type->write_room)
retval = serial->type->write_room(port);
else
- retval = generic_write_room(port);
+ retval = usb_serial_generic_write_room(port);
exit:
up (&port->sem);
if (serial->type->chars_in_buffer)
retval = serial->type->chars_in_buffer(port);
else
- retval = generic_chars_in_buffer(port);
+ retval = usb_serial_generic_chars_in_buffer(port);
exit:
up (&port->sem);
if (serial->type->shutdown)
serial->type->shutdown(serial);
else
- generic_shutdown(serial);
+ usb_serial_generic_shutdown(serial);
}
static int serial_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data)
return ((count < begin+length-off) ? count : begin+length-off);
}
-/*****************************************************************************
- * generic devices specific driver functions
- *****************************************************************************/
-int usb_serial_generic_open (struct usb_serial_port *port, struct file *filp)
-{
- struct usb_serial *serial = port->serial;
- int result = 0;
-
- if (port_paranoia_check (port, __FUNCTION__))
- return -ENODEV;
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- /* 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 = 1;
-
- /* if we have a bulk interrupt, start reading from it */
- if (serial->num_bulk_in) {
- /* Start reading from the device */
- usb_fill_bulk_urb (port->read_urb, serial->dev,
- usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
- port->read_urb->transfer_buffer,
- port->read_urb->transfer_buffer_length,
- ((serial->type->read_bulk_callback) ?
- serial->type->read_bulk_callback :
- generic_read_bulk_callback),
- port);
- result = usb_submit_urb(port->read_urb, GFP_KERNEL);
- if (result)
- err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
- }
-
- return result;
-}
-
-static void generic_cleanup (struct usb_serial_port *port)
-{
- struct usb_serial *serial = port->serial;
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- if (serial->dev) {
- /* shutdown any bulk reads that might be going on */
- if (serial->num_bulk_out)
- usb_unlink_urb (port->write_urb);
- if (serial->num_bulk_in)
- usb_unlink_urb (port->read_urb);
- }
-}
-
-static void generic_close (struct usb_serial_port *port, struct file * filp)
-{
- dbg("%s - port %d", __FUNCTION__, port->number);
- generic_cleanup (port);
-}
-
-int usb_serial_generic_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count)
-{
- struct usb_serial *serial = port->serial;
- int result;
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- if (count == 0) {
- dbg("%s - write request of 0 bytes", __FUNCTION__);
- return (0);
- }
-
- /* only do something if we have a bulk out endpoint */
- if (serial->num_bulk_out) {
- if (port->write_urb->status == -EINPROGRESS) {
- dbg("%s - already writing", __FUNCTION__);
- return (0);
- }
-
- count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
-
- if (from_user) {
- if (copy_from_user(port->write_urb->transfer_buffer, buf, count))
- return -EFAULT;
- }
- else {
- memcpy (port->write_urb->transfer_buffer, buf, count);
- }
-
- usb_serial_debug_data (__FILE__, __FUNCTION__, count, port->write_urb->transfer_buffer);
-
- /* set up our urb */
- usb_fill_bulk_urb (port->write_urb, serial->dev,
- usb_sndbulkpipe (serial->dev,
- port->bulk_out_endpointAddress),
- port->write_urb->transfer_buffer, count,
- ((serial->type->write_bulk_callback) ?
- serial->type->write_bulk_callback :
- generic_write_bulk_callback), port);
-
- /* send the data out the bulk port */
- result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
- if (result)
- err("%s - failed submitting write urb, error %d", __FUNCTION__, result);
- else
- result = count;
-
- return result;
- }
-
- /* no bulk out, so return 0 bytes written */
- return (0);
-}
-
-static int generic_write_room (struct usb_serial_port *port)
-{
- struct usb_serial *serial = port->serial;
- int room = 0;
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- if (serial->num_bulk_out) {
- if (port->write_urb->status != -EINPROGRESS)
- room = port->bulk_out_size;
- }
-
- dbg("%s - returns %d", __FUNCTION__, room);
- return (room);
-}
-
-static int generic_chars_in_buffer (struct usb_serial_port *port)
-{
- struct usb_serial *serial = port->serial;
- int chars = 0;
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- if (serial->num_bulk_out) {
- if (port->write_urb->status == -EINPROGRESS)
- chars = port->write_urb->transfer_buffer_length;
- }
-
- dbg("%s - returns %d", __FUNCTION__, chars);
- return (chars);
-}
-
-static void generic_read_bulk_callback (struct urb *urb)
-{
- struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
- struct tty_struct *tty;
- unsigned char *data = urb->transfer_buffer;
- int i;
- int result;
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- if (!serial) {
- dbg("%s - bad serial pointer, exiting", __FUNCTION__);
- return;
- }
-
- if (urb->status) {
- dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
- return;
- }
-
- usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data);
-
- tty = port->tty;
- if (tty && 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);
- }
-
- /* Continue trying to always read */
- usb_fill_bulk_urb (port->read_urb, serial->dev,
- usb_rcvbulkpipe (serial->dev,
- port->bulk_in_endpointAddress),
- port->read_urb->transfer_buffer,
- port->read_urb->transfer_buffer_length,
- ((serial->type->read_bulk_callback) ?
- serial->type->read_bulk_callback :
- generic_read_bulk_callback), port);
- result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
- if (result)
- err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
-}
-
-static void generic_write_bulk_callback (struct urb *urb)
-{
- struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
- struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- if (!serial) {
- dbg("%s - bad serial pointer, exiting", __FUNCTION__);
- return;
- }
-
- if (urb->status) {
- dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
- return;
- }
-
- usb_serial_port_softint((void *)port);
-
- schedule_work(&port->work);
-}
-
-static void generic_shutdown (struct usb_serial *serial)
-{
- int i;
-
- dbg("%s", __FUNCTION__);
-
- /* stop reads and writes on all ports */
- for (i=0; i < serial->num_ports; ++i) {
- generic_cleanup (&serial->port[i]);
- }
-}
-
void usb_serial_port_softint(void *private)
{
struct usb_serial_port *port = (struct usb_serial_port *)private;
(dev->descriptor.idProduct == PL2303_PRODUCT_ID)) ||
((dev->descriptor.idVendor == ATEN_VENDOR_ID) &&
(dev->descriptor.idProduct == ATEN_PRODUCT_ID))) {
- //if (ifnum == 1) {
if (interface != &dev->actconfig->interface[0]) {
/* check out the endpoints of the other interface*/
//interface = &dev->actconfig->interface[ifnum ^ 1];
info("%s converter detected", type->name);
#ifdef CONFIG_USB_SERIAL_GENERIC
- if (type == &generic_device) {
+ if (type == &usb_serial_generic_device) {
num_ports = num_bulk_out;
if (num_ports == 0) {
err("Generic device with no bulk out, not allowed.");
port->bulk_in_buffer, buffer_size,
((serial->type->read_bulk_callback) ?
serial->type->read_bulk_callback :
- generic_read_bulk_callback),
+ usb_serial_generic_read_bulk_callback),
port);
}
port->bulk_out_buffer, buffer_size,
((serial->type->write_bulk_callback) ?
serial->type->write_bulk_callback :
- generic_write_bulk_callback),
+ usb_serial_generic_write_bulk_callback),
port);
}
}
/* register the generic driver, if we should */
- result = generic_register();
+ result = usb_serial_generic_register(debug);
if (result < 0) {
err("%s - registering generic driver failed", __FUNCTION__);
goto exit;
tty_unregister_driver(&serial_tty_driver);
exit_generic:
- generic_deregister();
+ usb_serial_generic_deregister();
exit:
err ("%s - returning with error %d", __FUNCTION__, result);
{
usb_serial_console_exit();
- generic_deregister();
+ usb_serial_generic_deregister();
usb_deregister(&usb_serial_driver);
tty_unregister_driver(&serial_tty_driver);
MODULE_PARM(debug, "i");
MODULE_PARM_DESC(debug, "Debug enabled or not");
-
-#ifdef CONFIG_USB_SERIAL_GENERIC
-MODULE_PARM(vendor, "h");
-MODULE_PARM_DESC(vendor, "User specified USB idVendor");
-
-MODULE_PARM(product, "h");
-MODULE_PARM_DESC(product, "User specified USB idProduct");
-#endif
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