/*
* USB Serial Converter driver
*
- * Copyright (C) 1999 - 2004
+ * Copyright (C) 1999 - 2005
* 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 as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * the Free Software Foundation; either version 2 of the License.
*
- * See Documentation/usb/usb-serial.txt for more information on using this driver
- *
- * (03/26/2002) gkh
- * removed the port->tty check from port_paranoia_check() due to serial
- * consoles not having a tty device assigned to them.
- *
- * (12/03/2001) gkh
- * removed active from the port structure.
- * added documentation to the usb_serial_device_type structure
- *
- * (10/10/2001) gkh
- * added vendor and product to serial structure. Needed to determine device
- * owner when the device is disconnected.
- *
- * (05/30/2001) gkh
- * added sem to port structure and removed port_lock
- *
- * (10/05/2000) gkh
- * Added interrupt_in_endpointAddress and bulk_in_endpointAddress to help
- * fix bug with urb->dev not being set properly, now that the usb core
- * needs it.
- *
- * (09/11/2000) gkh
- * Added usb_serial_debug_data function to help get rid of #DEBUG in the
- * drivers.
- *
- * (08/28/2000) gkh
- * Added port_lock to port structure.
- *
- * (08/08/2000) gkh
- * Added open_count to port structure.
- *
- * (07/23/2000) gkh
- * Added bulk_out_endpointAddress to port structure.
- *
- * (07/19/2000) gkh, pberger, and borchers
- * Modifications to allow usb-serial drivers to be modules.
- *
- *
*/
#include <linux/config.h>
#include <linux/kref.h>
+#include <linux/mutex.h>
#define SERIAL_TTY_MAJOR 188 /* Nice legal number now */
#define SERIAL_TTY_MINORS 255 /* loads of devices :) */
* usb_serial_port: structure for the specific ports of a device.
* @serial: pointer back to the struct usb_serial owner of this port.
* @tty: pointer to the corresponding tty for this port.
+ * @lock: spinlock to grab when updating portions of this structure.
+ * @mutex: mutex used to synchronize serial_open() and serial_close()
+ * access for this port.
* @number: the number of the port (the minor number).
* @interrupt_in_buffer: pointer to the interrupt in buffer for this port.
* @interrupt_in_urb: pointer to the interrupt in struct urb for this port.
* @interrupt_in_endpointAddress: endpoint address for the interrupt in pipe
* for this port.
+ * @interrupt_out_buffer: pointer to the interrupt out buffer for this port.
+ * @interrupt_out_size: the size of the interrupt_out_buffer, in bytes.
+ * @interrupt_out_urb: pointer to the interrupt out struct urb for this port.
+ * @interrupt_out_endpointAddress: endpoint address for the interrupt out pipe
+ * for this port.
* @bulk_in_buffer: pointer to the bulk in buffer for this port.
* @read_urb: pointer to the bulk in struct urb for this port.
* @bulk_in_endpointAddress: endpoint address for the bulk in pipe for this
struct usb_serial_port {
struct usb_serial * serial;
struct tty_struct * tty;
+ spinlock_t lock;
+ struct mutex mutex;
unsigned char number;
unsigned char * interrupt_in_buffer;
struct urb * interrupt_in_urb;
__u8 interrupt_in_endpointAddress;
+ unsigned char * interrupt_out_buffer;
+ int interrupt_out_size;
+ struct urb * interrupt_out_urb;
+ __u8 interrupt_out_endpointAddress;
+
unsigned char * bulk_in_buffer;
+ int bulk_in_size;
struct urb * read_urb;
__u8 bulk_in_endpointAddress;
unsigned char * bulk_out_buffer;
int bulk_out_size;
struct urb * write_urb;
+ int write_urb_busy;
__u8 bulk_out_endpointAddress;
wait_queue_head_t write_wait;
/**
* usb_serial - structure used by the usb-serial core for a device
* @dev: pointer to the struct usb_device for this device
- * @type: pointer to the struct usb_serial_device_type for this device
+ * @type: pointer to the struct usb_serial_driver for this device
* @interface: pointer to the struct usb_interface for this device
* @minor: the starting minor number for this device
* @num_ports: the number of ports this device has
* @num_interrupt_in: number of interrupt in endpoints we have
+ * @num_interrupt_out: number of interrupt out endpoints we have
* @num_bulk_in: number of bulk in endpoints we have
* @num_bulk_out: number of bulk out endpoints we have
- * @vendor: vendor id of this device
- * @product: product id of this device
* @port: array of struct usb_serial_port structures for the different ports.
* @private: place to put any driver specific information that is needed. The
* usb-serial driver is required to manage this data, the usb-serial core
*/
struct usb_serial {
struct usb_device * dev;
- struct usb_serial_device_type * type;
+ struct usb_serial_driver * type;
struct usb_interface * interface;
unsigned char minor;
unsigned char num_ports;
unsigned char num_port_pointers;
char num_interrupt_in;
+ char num_interrupt_out;
char num_bulk_in;
char num_bulk_out;
- __u16 vendor;
- __u16 product;
struct usb_serial_port * port[MAX_NUM_PORTS];
struct kref kref;
void * private;
}
/**
- * usb_serial_device_type - a structure that defines a usb serial device
- * @owner: pointer to the module that owns this device.
- * @name: pointer to a string that describes this device. This string used
+ * usb_serial_driver - describes a usb serial driver
+ * @description: pointer to a string that describes this driver. This string used
* in the syslog messages when a device is inserted or removed.
- * @short_name: a pointer to a string that describes this device in
- * KOBJ_NAME_LEN characters or less. This is used for the sysfs interface
- * to describe the driver.
* @id_table: pointer to a list of usb_device_id structures that define all
* of the devices this structure can support.
* @num_interrupt_in: the number of interrupt in endpoints this device will
* have.
+ * @num_interrupt_out: the number of interrupt out endpoints this device will
+ * have.
* @num_bulk_in: the number of bulk in endpoints this device will have.
* @num_bulk_out: the number of bulk out endpoints this device will have.
* @num_ports: the number of different ports this device will have.
* @shutdown: pointer to the driver's shutdown function. This will be
* called when the device is removed from the system.
*
- * This structure is defines a USB Serial device. It provides all of
+ * This structure is defines a USB Serial driver. It provides all of
* the information that the USB serial core code needs. If the function
* pointers are defined, then the USB serial core code will call them when
* the corresponding tty port functions are called. If they are not
* called, the generic serial function will be used instead.
+ *
+ * The driver.owner field should be set to the module owner of this driver.
+ * The driver.name field should be set to the name of this driver (remember
+ * it will show up in sysfs, so it needs to be short and to the point.
+ * Useing the module name is a good idea.)
*/
-struct usb_serial_device_type {
- struct module *owner;
- char *name;
- char *short_name;
+struct usb_serial_driver {
+ const char *description;
const struct usb_device_id *id_table;
char num_interrupt_in;
+ char num_interrupt_out;
char num_bulk_in;
char num_bulk_out;
char num_ports;
/* serial function calls */
int (*open) (struct usb_serial_port *port, struct file * filp);
void (*close) (struct usb_serial_port *port, struct file * filp);
- int (*write) (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
+ int (*write) (struct usb_serial_port *port, const unsigned char *buf, int count);
int (*write_room) (struct usb_serial_port *port);
int (*ioctl) (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
void (*set_termios) (struct usb_serial_port *port, struct termios * old);
int (*tiocmset) (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear);
void (*read_int_callback)(struct urb *urb, struct pt_regs *regs);
+ void (*write_int_callback)(struct urb *urb, struct pt_regs *regs);
void (*read_bulk_callback)(struct urb *urb, struct pt_regs *regs);
void (*write_bulk_callback)(struct urb *urb, struct pt_regs *regs);
};
-#define to_usb_serial_driver(d) container_of(d, struct usb_serial_device_type, driver)
+#define to_usb_serial_driver(d) container_of(d, struct usb_serial_driver, driver)
-extern int usb_serial_register(struct usb_serial_device_type *new_device);
-extern void usb_serial_deregister(struct usb_serial_device_type *device);
+extern int usb_serial_register(struct usb_serial_driver *driver);
+extern void usb_serial_deregister(struct usb_serial_driver *driver);
extern void usb_serial_port_softint(void *private);
extern int usb_serial_probe(struct usb_interface *iface, const struct usb_device_id *id);
/* Functions needed by other parts of the usbserial core */
extern struct usb_serial *usb_serial_get_by_index (unsigned int minor);
extern int usb_serial_generic_open (struct usb_serial_port *port, struct file *filp);
-extern int usb_serial_generic_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
+extern int usb_serial_generic_write (struct usb_serial_port *port, const unsigned char *buf, int count);
extern void usb_serial_generic_close (struct usb_serial_port *port, struct file *filp);
extern int usb_serial_generic_write_room (struct usb_serial_port *port);
extern int usb_serial_generic_chars_in_buffer (struct usb_serial_port *port);
extern int usb_serial_generic_register (int debug);
extern void usb_serial_generic_deregister (void);
-extern int usb_serial_bus_register (struct usb_serial_device_type *device);
-extern void usb_serial_bus_deregister (struct usb_serial_device_type *device);
+extern int usb_serial_bus_register (struct usb_serial_driver *device);
+extern void usb_serial_bus_deregister (struct usb_serial_driver *device);
-extern struct usb_serial_device_type usb_serial_generic_device;
+extern struct usb_serial_driver usb_serial_generic_device;
extern struct bus_type usb_serial_bus_type;
extern struct tty_driver *usb_serial_tty_driver;
-static inline void usb_serial_debug_data (const char *file, const char *function, int size, const unsigned char *data)
+static inline void usb_serial_debug_data(int debug,
+ struct device *dev,
+ const char *function, int size,
+ const unsigned char *data)
{
int i;
- if (!debug)
- return;
-
- printk (KERN_DEBUG "%s: %s - length = %d, data = ", file, function, size);
- for (i = 0; i < size; ++i) {
- printk ("%.2x ", data[i]);
+ if (debug) {
+ dev_printk(KERN_DEBUG, dev, "%s - length = %d, data = ", function, size);
+ for (i = 0; i < size; ++i)
+ printk ("%.2x ", data[i]);
+ printk ("\n");
}
- printk ("\n");
}
-
/* Use our own dbg macro */
#undef dbg
#define dbg(format, arg...) do { if (debug) printk(KERN_DEBUG "%s: " format "\n" , __FILE__ , ## arg); } while (0)
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