patch-2.3.51 linux/drivers/usb/usb-serial.c
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- Lines: 2552
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.3.50/linux/drivers/usb/usb-serial.c
- Orig date:
Tue Mar 7 14:32:26 2000
diff -u --recursive --new-file v2.3.50/linux/drivers/usb/usb-serial.c linux/drivers/usb/usb-serial.c
@@ -1,2551 +0,0 @@
-/*
- * USB Serial Converter driver
- *
- * (C) Copyright (C) 1999, 2000
- * 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.
- *
- * This driver was originally based on the ACM driver by Armin Fuerst (which was
- * based on a driver by Brad Keryan)
- *
- * See Documentation/usb/usb-serial.txt for more information on using this driver
- *
- * (03/06/2000) gkh
- * Added the keyspan pda code from Brian Warner <warner@lothar.com>
- * Moved a bunch of the port specific stuff into its own structure. This
- * is in anticipation of the true multiport devices (there's a bug if you
- * try to access more than one port of any multiport device right now)
- *
- * (02/21/2000) gkh
- * Made it so that any serial devices only have to specify which functions
- * they want to overload from the generic function calls (great,
- * inheritance in C, in a driver, just what I wanted...)
- * Added support for set_termios and ioctl function calls. No drivers take
- * advantage of this yet.
- * Removed the #ifdef MODULE, now there is no module specific code.
- * Cleaned up a few comments in usb-serial.h that were wrong (thanks again
- * to Miles Lott).
- * Small fix to get_free_serial.
- *
- * (02/14/2000) gkh
- * Removed the Belkin and Peracom functionality from the driver due to
- * the lack of support from the vendor, and me not wanting people to
- * accidenatly buy the device, expecting it to work with Linux.
- * Added read_bulk_callback and write_bulk_callback to the type structure
- * for the needs of the FTDI and WhiteHEAT driver.
- * Changed all reverences to FTDI to FTDI_SIO at the request of Bill
- * Ryder.
- * Changed the output urb size back to the max endpoint size to make
- * the ftdi_sio driver have it easier, and due to the fact that it didn't
- * really increase the speed any.
- *
- * (02/11/2000) gkh
- * Added VISOR_FUNCTION_CONSOLE to the visor startup function. This was a
- * patch from Miles Lott (milos@insync.net).
- * Fixed bug with not restoring the minor range that a device grabs, if
- * the startup function fails (thanks Miles for finding this).
- *
- * (02/05/2000) gkh
- * Added initial framework for the Keyspan PDA serial converter so that
- * Brian Warner has a place to put his code.
- * Made the ezusb specific functions generic enough that different
- * devices can use them (whiteheat and keyspan_pda both need them).
- * Split out a whole bunch of structure and other stuff to a seperate
- * usb-serial.h file.
- * Made the Visor connection messages a little more understandable, now
- * that Miles Lott (milos@insync.net) has gotten the Generic channel to
- * work. Also made them always show up in the log file.
- *
- * (01/25/2000) gkh
- * Added initial framework for FTDI serial converter so that Bill Ryder
- * has a place to put his code.
- * Added the vendor specific info from Handspring. Now we can print out
- * informational debug messages as well as understand what is happening.
- *
- * (01/23/2000) gkh
- * Fixed problem of crash when trying to open a port that didn't have a
- * device assigned to it. Made the minor node finding a little smarter,
- * now it looks to find a continous space for the new device.
- *
- * (01/21/2000) gkh
- * Fixed bug in visor_startup with patch from Miles Lott (milos@insync.net)
- * Fixed get_serial_by_minor which was all messed up for multi port
- * devices. Fixed multi port problem for generic devices. Now the number
- * of ports is determined by the number of bulk out endpoints for the
- * generic device.
- *
- * (01/19/2000) gkh
- * Removed lots of cruft that was around from the old (pre urb) driver
- * interface.
- * Made the serial_table dynamic. This should save lots of memory when
- * the number of minor nodes goes up to 256.
- * Added initial support for devices that have more than one port.
- * Added more debugging comments for the Visor, and added a needed
- * set_configuration call.
- *
- * (01/17/2000) gkh
- * Fixed the WhiteHEAT firmware (my processing tool had a bug)
- * and added new debug loader firmware for it.
- * Removed the put_char function as it isn't really needed.
- * Added visor startup commands as found by the Win98 dump.
- *
- * (01/13/2000) gkh
- * Fixed the vendor id for the generic driver to the one I meant it to be.
- *
- * (01/12/2000) gkh
- * Forget the version numbering...that's pretty useless...
- * Made the driver able to be compiled so that the user can select which
- * converter they want to use. This allows people who only want the Visor
- * support to not pay the memory size price of the WhiteHEAT.
- * Fixed bug where the generic driver (idVendor=0000 and idProduct=0000)
- * grabbed the root hub. Not good.
- *
- * version 0.4.0 (01/10/2000) gkh
- * Added whiteheat.h containing the firmware for the ConnectTech WhiteHEAT
- * device. Added startup function to allow firmware to be downloaded to
- * a device if it needs to be.
- * Added firmware download logic to the WhiteHEAT device.
- * Started to add #defines to split up the different drivers for potential
- * configuration option.
- *
- * version 0.3.1 (12/30/99) gkh
- * Fixed problems with urb for bulk out.
- * Added initial support for multiple sets of endpoints. This enables
- * the Handspring Visor to be attached successfully. Only the first
- * bulk in / bulk out endpoint pair is being used right now.
- *
- * version 0.3.0 (12/27/99) gkh
- * Added initial support for the Handspring Visor based on a patch from
- * Miles Lott (milos@sneety.insync.net)
- * Cleaned up the code a bunch and converted over to using urbs only.
- *
- * version 0.2.3 (12/21/99) gkh
- * Added initial support for the Connect Tech WhiteHEAT converter.
- * Incremented the number of ports in expectation of getting the
- * WhiteHEAT to work properly (4 ports per connection).
- * Added notification on insertion and removal of what port the
- * device is/was connected to (and what kind of device it was).
- *
- * version 0.2.2 (12/16/99) gkh
- * Changed major number to the new allocated number. We're legal now!
- *
- * version 0.2.1 (12/14/99) gkh
- * Fixed bug that happens when device node is opened when there isn't a
- * device attached to it. Thanks to marek@webdesign.no for noticing this.
- *
- * version 0.2.0 (11/10/99) gkh
- * Split up internals to make it easier to add different types of serial
- * converters to the code.
- * Added a "generic" driver that gets it's vendor and product id
- * from when the module is loaded. Thanks to David E. Nelson (dnelson@jump.net)
- * for the idea and sample code (from the usb scanner driver.)
- * Cleared up any licensing questions by releasing it under the GNU GPL.
- *
- * version 0.1.2 (10/25/99) gkh
- * Fixed bug in detecting device.
- *
- * version 0.1.1 (10/05/99) gkh
- * Changed the major number to not conflict with anything else.
- *
- * version 0.1 (09/28/99) gkh
- * Can recognize the two different devices and start up a read from
- * device when asked to. Writes also work. No control signals yet, this
- * all is vendor specific data (i.e. no spec), also no control for
- * different baud rates or other bit settings.
- * Currently we are using the same devid as the acm driver. This needs
- * to change.
- *
- */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/malloc.h>
-#include <linux/fcntl.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/tty.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-
-#define DEBUG
-
-#include "usb.h"
-
-#ifdef CONFIG_USB_SERIAL_WHITEHEAT
-#include "whiteheat.h" /* firmware for the ConnectTech WhiteHEAT device */
-#endif
-
-#ifdef CONFIG_USB_SERIAL_KEYSPAN_PDA
-struct ezusb_hex_record {
- __u16 address;
- __u8 data_size;
- __u8 data[16];
-};
-#include "keyspan_pda_fw.h"
-#endif
-
-#include "usb-serial.h"
-
-/* parity check flag */
-#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
-
-/* local function prototypes */
-static int serial_open (struct tty_struct *tty, struct file * filp);
-static void serial_close (struct tty_struct *tty, struct file * filp);
-static int serial_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count);
-static int serial_write_room (struct tty_struct *tty);
-static int serial_chars_in_buffer (struct tty_struct *tty);
-static void serial_throttle (struct tty_struct * tty);
-static void serial_unthrottle (struct tty_struct * tty);
-static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg);
-static void serial_set_termios (struct tty_struct *tty, struct termios * old);
-
-static void * usb_serial_probe(struct usb_device *dev, unsigned int ifnum);
-static void usb_serial_disconnect(struct usb_device *dev, void *ptr);
-
-static struct usb_driver usb_serial_driver = {
- "serial",
- usb_serial_probe,
- usb_serial_disconnect,
- { NULL, NULL }
-};
-
-static int serial_refcount;
-static struct tty_struct * serial_tty[SERIAL_TTY_MINORS];
-static struct termios * serial_termios[SERIAL_TTY_MINORS];
-static struct termios * serial_termios_locked[SERIAL_TTY_MINORS];
-static struct usb_serial *serial_table[SERIAL_TTY_MINORS] = {NULL, };
-
-
-
-static struct usb_serial *get_serial_by_minor (int minor)
-{
- dbg("get_serial_by_minor %d", minor);
-
- return serial_table[minor];
-}
-
-
-static struct usb_serial *get_free_serial (int num_ports, int *minor)
-{
- struct usb_serial *serial = NULL;
- int i, j;
- int good_spot;
-
- dbg("get_free_serial %d", num_ports);
-
- *minor = 0;
- for (i = 0; i < SERIAL_TTY_MINORS; ++i) {
- if (serial_table[i])
- continue;
-
- good_spot = 1;
- for (j = 1; j <= num_ports-1; ++j)
- if (serial_table[i+j])
- good_spot = 0;
- if (good_spot == 0)
- continue;
-
- if (!(serial = kmalloc(sizeof(struct usb_serial), GFP_KERNEL))) {
- err("Out of memory");
- return NULL;
- }
- memset(serial, 0, sizeof(struct usb_serial));
- serial_table[i] = serial;
- *minor = i;
- dbg("minor base = %d", *minor);
- for (i = *minor+1; (i < (*minor + num_ports)) && (i < SERIAL_TTY_MINORS); ++i)
- serial_table[i] = serial;
- return serial;
- }
- return NULL;
-}
-
-
-static void return_serial (struct usb_serial *serial)
-{
- int i;
-
- dbg("return_serial");
-
- if (serial == NULL)
- return;
-
- for (i = 0; i < serial->num_ports; ++i) {
- serial_table[serial->minor + i] = NULL;
- }
-
- return;
-}
-
-
-#ifdef USES_EZUSB_FUNCTIONS
-/* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
-#define CPUCS_REG 0x7F92
-
-static int ezusb_writememory (struct usb_serial *serial, int address, unsigned char *data, int length, __u8 bRequest)
-{
- int result;
- unsigned char *transfer_buffer = kmalloc (length, GFP_KERNEL);
-
-// dbg("ezusb_writememory %x, %d", address, length);
-
- if (!transfer_buffer) {
- err("ezusb_writememory: kmalloc(%d) failed.", length);
- return -ENOMEM;
- }
- memcpy (transfer_buffer, data, length);
- result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), bRequest, 0x40, address, 0, transfer_buffer, length, 300);
- kfree (transfer_buffer);
- return result;
-}
-
-
-static int ezusb_set_reset (struct usb_serial *serial, unsigned char reset_bit)
-{
- int response;
- dbg("ezusb_set_reset: %d", reset_bit);
- response = ezusb_writememory (serial, CPUCS_REG, &reset_bit, 1, 0xa0);
- if (response < 0) {
- err("ezusb_set_reset %d failed", reset_bit);
- }
- return response;
-}
-
-#endif /* USES_EZUSB_FUNCTIONS */
-
-
-/*****************************************************************************
- * Driver tty interface functions
- *****************************************************************************/
-static int serial_open (struct tty_struct *tty, struct file * filp)
-{
- struct usb_serial *serial;
-
- dbg("serial_open");
-
- /* initialize the pointer incase something fails */
- tty->driver_data = NULL;
-
- /* get the serial object associated with this tty pointer */
- serial = get_serial_by_minor (MINOR(tty->device));
-
- /* do some sanity checking that we really have a device present */
- if (!serial) {
- dbg("serial == NULL!");
- return (-ENODEV);
- }
- if (!serial->type) {
- dbg("serial->type == NULL!");
- return (-ENODEV);
- }
-
- /* make the tty driver remember our serial object, and us it */
- tty->driver_data = serial;
- serial->tty = tty;
-
- /* pass on to the driver specific version of this function if it is available */
- if (serial->type->open) {
- return (serial->type->open(tty, filp));
- } else {
- return (generic_serial_open(tty, filp));
- }
-}
-
-
-static void serial_close(struct tty_struct *tty, struct file * filp)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port;
-
- dbg("serial_close");
-
- if (!serial) {
- dbg("serial == NULL!");
- return;
- }
-
- port = MINOR(tty->device) - serial->minor;
-
- dbg("serial_close port %d", port);
-
- /* do some sanity checking that we really have a device present */
- if (!serial->type) {
- dbg("serial->type == NULL!");
- return;
- }
- if (!serial->port[port].active) {
- dbg ("device not opened");
- return;
- }
-
- /* pass on to the driver specific version of this function if it is available */
- if (serial->type->close) {
- serial->type->close(tty, filp);
- } else {
- generic_serial_close(tty, filp);
- }
-}
-
-
-static int serial_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
-
- dbg("serial_write port %d, %d byte(s)", port, count);
-
- /* do some sanity checking that we really have a device present */
- if (!serial) {
- dbg("serial == NULL!");
- return (-ENODEV);
- }
- if (!serial->type) {
- dbg("serial->type == NULL!");
- return (-ENODEV);
- }
- if (!serial->port[port].active) {
- dbg ("device not opened");
- return (-EINVAL);
- }
-
- /* pass on to the driver specific version of this function if it is available */
- if (serial->type->write) {
- return (serial->type->write(tty, from_user, buf, count));
- } else {
- return (generic_serial_write(tty, from_user, buf, count));
- }
-}
-
-
-static int serial_write_room (struct tty_struct *tty)
-{
- struct usb_serial *serial = (struct usb_serial *)tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
-
- dbg("serial_write_room port %d", port);
-
- /* do some sanity checking that we really have a device present */
- if (!serial) {
- dbg("serial == NULL!");
- return (-ENODEV);
- }
- if (!serial->type) {
- dbg("serial->type == NULL!");
- return (-ENODEV);
- }
- if (!serial->port[port].active) {
- dbg ("device not open");
- return (-EINVAL);
- }
-
- /* pass on to the driver specific version of this function if it is available */
- if (serial->type->write_room) {
- return (serial->type->write_room(tty));
- } else {
- return (generic_write_room(tty));
- }
-}
-
-
-static int serial_chars_in_buffer (struct tty_struct *tty)
-{
- struct usb_serial *serial = (struct usb_serial *)tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
-
- dbg("serial_chars_in_buffer port %d", port);
-
- /* do some sanity checking that we really have a device present */
- if (!serial) {
- dbg("serial == NULL!");
- return (-ENODEV);
- }
- if (!serial->type) {
- dbg("serial->type == NULL!");
- return (-ENODEV);
- }
- if (!serial->port[port].active) {
- dbg ("device not open");
- return (-EINVAL);
- }
-
- /* pass on to the driver specific version of this function if it is available */
- if (serial->type->chars_in_buffer) {
- return (serial->type->chars_in_buffer(tty));
- } else {
- return (generic_chars_in_buffer(tty));
- }
-}
-
-
-static void serial_throttle (struct tty_struct * tty)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
-
- dbg("serial_throttle port %d", port);
-
- /* do some sanity checking that we really have a device present */
- if (!serial) {
- dbg("serial == NULL!");
- return;
- }
- if (!serial->type) {
- dbg("serial->type == NULL!");
- return;
- }
- if (!serial->port[port].active) {
- dbg ("device not open");
- return;
- }
-
- /* pass on to the driver specific version of this function */
- if (serial->type->throttle) {
- serial->type->throttle(tty);
- } else {
- generic_throttle(tty);
- }
-
- return;
-}
-
-
-static void serial_unthrottle (struct tty_struct * tty)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
-
- dbg("serial_unthrottle port %d", port);
-
- /* do some sanity checking that we really have a device present */
- if (!serial) {
- dbg("serial == NULL!");
- return;
- }
- if (!serial->type) {
- dbg("serial->type == NULL!");
- return;
- }
- if (!serial->port[port].active) {
- dbg ("device not open");
- return;
- }
-
- /* pass on to the driver specific version of this function */
- if (serial->type->unthrottle) {
- serial->type->unthrottle(tty);
- } else {
- generic_unthrottle(tty);
- }
-
- return;
-}
-
-
-static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port;
-
- dbg("serial_ioctl");
-
- if (!serial) {
- dbg("serial == NULL!");
- return -ENODEV;
- }
-
- port = MINOR(tty->device) - serial->minor;
-
- dbg("serial_ioctl port %d", port);
-
- /* do some sanity checking that we really have a device present */
- if (!serial->type) {
- dbg("serial->type == NULL!");
- return -ENODEV;
- }
- if (!serial->port[port].active) {
- dbg ("device not open");
- return -ENODEV;
- }
-
- /* pass on to the driver specific version of this function if it is available */
- if (serial->type->ioctl) {
- return (serial->type->ioctl(tty, file, cmd, arg));
- } else {
- return (generic_ioctl (tty, file, cmd, arg));
- }
-}
-
-
-static void serial_set_termios (struct tty_struct *tty, struct termios * old)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port;
-
- dbg("serial_set_termios");
-
- if (!serial) {
- dbg("serial == NULL!");
- return;
- }
-
- port = MINOR(tty->device) - serial->minor;
-
- dbg("serial_set_termios port %d", port);
-
- /* do some sanity checking that we really have a device present */
- if (!serial->type) {
- dbg("serial->type == NULL!");
- return;
- }
- if (!serial->port[port].active) {
- dbg ("device not open");
- return;
- }
-
- /* pass on to the driver specific version of this function if it is available */
- if (serial->type->set_termios) {
- serial->type->set_termios(tty, old);
- } else {
- generic_set_termios (tty, old);
- }
-
- return;
-}
-
-
-static void serial_break (struct tty_struct *tty, int break_state)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port;
-
- if (!serial) {
- dbg("serial == NULL!");
- return;
- }
-
- port = MINOR(tty->device) - serial->minor;
-
- dbg("serial_break port %d", port);
-
- /* do some sanity checking that we really have a device present */
- if (!serial->type) {
- dbg("serial->type == NULL!");
- return;
- }
- if (!serial->port[port].active) {
- dbg ("device not open");
- return;
- }
-
- /* pass on to the driver specific version of this function if it is
- available */
- if (serial->type->break_ctl) {
- serial->type->break_ctl(tty, break_state);
- }
-}
-
-
-#ifdef CONFIG_USB_SERIAL_WHITEHEAT
-/*****************************************************************************
- * Connect Tech's White Heat specific driver functions
- *****************************************************************************/
-static int whiteheat_serial_open (struct tty_struct *tty, struct file *filp)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
-
- dbg("whiteheat_serial_open port %d", portNumber);
-
- if (port->active) {
- dbg ("device already open");
- return -EINVAL;
- }
- port->active = 1;
-
- /*Start reading from the device*/
- if (usb_submit_urb(&port->read_urb))
- dbg("usb_submit_urb(read bulk) failed");
-
- /* Need to do device specific setup here (control lines, baud rate, etc.) */
- /* FIXME!!! */
-
- return (0);
-}
-
-
-static void whiteheat_serial_close(struct tty_struct *tty, struct file * filp)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
-
- dbg("whiteheat_serial_close port %d", portNumber);
-
- /* Need to change the control lines here */
- /* FIXME */
-
- /* shutdown our bulk reads and writes */
- usb_unlink_urb (&port->write_urb);
- usb_unlink_urb (&port->read_urb);
- port->active = 0;
-}
-
-
-static void whiteheat_set_termios (struct tty_struct *tty, struct termios *old_termios)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
- unsigned int cflag = tty->termios->c_cflag;
-
- dbg("whiteheat_set_termios port %d", port);
-
- /* check that they really want us to change something */
- if (old_termios) {
- if ((cflag == old_termios->c_cflag) &&
- (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
- dbg("nothing to change...");
- return;
- }
- }
-
- /* do the parsing of the cflag to see what to set the line to */
- /* FIXME!! */
-
- return;
-}
-
-static void whiteheat_throttle (struct tty_struct * tty)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
-
- dbg("whiteheat_throttle port %d", port);
-
- /* Change the control signals */
- /* FIXME!!! */
-
- return;
-}
-
-
-static void whiteheat_unthrottle (struct tty_struct * tty)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
-
- dbg("whiteheat_unthrottle port %d", port);
-
- /* Change the control signals */
- /* FIXME!!! */
-
- return;
-}
-
-
-/* steps to download the firmware to the WhiteHEAT device:
- - hold the reset (by writing to the reset bit of the CPUCS register)
- - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD
- - release the reset (by writing to the CPUCS register)
- - download the WH.HEX file for all addresses greater than 0x1b3f using
- VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD
- - hold the reset
- - download the WH.HEX file for all addresses less than 0x1b40 using
- VENDOR_REQUEST_ANCHOR_LOAD
- - release the reset
- - device renumerated itself and comes up as new device id with all
- firmware download completed.
-*/
-static int whiteheat_startup (struct usb_serial *serial)
-{
- int response;
- const struct whiteheat_hex_record *record;
-
- dbg("whiteheat_startup");
-
- response = ezusb_set_reset (serial, 1);
-
- record = &whiteheat_loader[0];
- while (record->address != 0xffff) {
- response = ezusb_writememory (serial, record->address,
- (unsigned char *)record->data, record->data_size, 0xa0);
- if (response < 0) {
- err("ezusb_writememory failed for loader (%d %04X %p %d)",
- response, record->address, record->data, record->data_size);
- break;
- }
- ++record;
- }
-
- response = ezusb_set_reset (serial, 0);
-
- record = &whiteheat_firmware[0];
- while (record->address < 0x1b40) {
- ++record;
- }
- while (record->address != 0xffff) {
- response = ezusb_writememory (serial, record->address,
- (unsigned char *)record->data, record->data_size, 0xa0);
- if (response < 0) {
- err("ezusb_writememory failed for first firmware step (%d %04X %p %d)",
- response, record->address, record->data, record->data_size);
- break;
- }
- ++record;
- }
-
- response = ezusb_set_reset (serial, 1);
-
- record = &whiteheat_firmware[0];
- while (record->address < 0x1b40) {
- response = ezusb_writememory (serial, record->address,
- (unsigned char *)record->data, record->data_size, 0xa0);
- if (response < 0) {
- err("ezusb_writememory failed for second firmware step (%d %04X %p %d)",
- response, record->address, record->data, record->data_size);
- break;
- }
- ++record;
- }
-
- response = ezusb_set_reset (serial, 0);
-
- /* we want this device to fail to have a driver assigned to it. */
- return (1);
-}
-#endif /* CONFIG_USB_SERIAL_WHITEHEAT */
-
-
-#ifdef CONFIG_USB_SERIAL_VISOR
-/******************************************************************************
- * Handspring Visor specific driver functions
- ******************************************************************************/
-static int visor_serial_open (struct tty_struct *tty, struct file *filp)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
-
- dbg("visor_serial_open port %d", portNumber);
-
- if (port->active) {
- dbg ("device already open");
- return -EINVAL;
- }
-
- port->active = 1;
-
- /*Start reading from the device*/
- if (usb_submit_urb(&port->read_urb))
- dbg("usb_submit_urb(read bulk) failed");
-
- return (0);
-}
-
-static void visor_serial_close(struct tty_struct *tty, struct file * filp)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
- unsigned char *transfer_buffer = kmalloc (0x12, GFP_KERNEL);
-
- dbg("visor_serial_close port %d", portNumber);
-
- if (!transfer_buffer) {
- err("visor_serial_close: kmalloc(%d) failed.", 0x12);
- } else {
- /* send a shutdown message to the device */
- usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), VISOR_CLOSE_NOTIFICATION,
- 0xc2, 0x0000, 0x0000, transfer_buffer, 0x12, 300);
- }
-
- /* shutdown our bulk reads and writes */
- usb_unlink_urb (&port->write_urb);
- usb_unlink_urb (&port->read_urb);
- port->active = 0;
-}
-
-
-static void visor_throttle (struct tty_struct * tty)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
-
- dbg("visor_throttle port %d", port);
-
- usb_unlink_urb (&serial->port[port].read_urb);
-
- return;
-}
-
-
-static void visor_unthrottle (struct tty_struct * tty)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
-
- dbg("visor_unthrottle port %d", port);
-
- if (usb_unlink_urb (&serial->port[port].read_urb))
- dbg("usb_submit_urb(read bulk) failed");
-
- return;
-}
-
-
-static int visor_startup (struct usb_serial *serial)
-{
- int response;
- int i;
- unsigned char *transfer_buffer = kmalloc (256, GFP_KERNEL);
-
- if (!transfer_buffer) {
- err("visor_startup: kmalloc(%d) failed.", 256);
- return -ENOMEM;
- }
-
- dbg("visor_startup");
-
- dbg("visor_setup: Set config to 1");
- usb_set_configuration (serial->dev, 1);
-
- /* send a get connection info request */
- response = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), VISOR_GET_CONNECTION_INFORMATION,
- 0xc2, 0x0000, 0x0000, transfer_buffer, 0x12, 300);
- if (response < 0) {
- err("visor_startup: error getting connection information");
- } else {
- struct visor_connection_info *connection_info = (struct visor_connection_info *)transfer_buffer;
- char *string;
- info("%s: Number of ports: %d", serial->type->name, connection_info->num_ports);
- for (i = 0; i < connection_info->num_ports; ++i) {
- switch (connection_info->connections[i].port_function_id) {
- case VISOR_FUNCTION_GENERIC:
- string = "Generic";
- break;
- case VISOR_FUNCTION_DEBUGGER:
- string = "Debugger";
- break;
- case VISOR_FUNCTION_HOTSYNC:
- string = "HotSync";
- break;
- case VISOR_FUNCTION_CONSOLE:
- string = "Console";
- break;
- case VISOR_FUNCTION_REMOTE_FILE_SYS:
- string = "Remote File System";
- break;
- default:
- string = "unknown";
- break;
- }
- info("%s: port %d, is for %s use and is bound to ttyUSB%d", serial->type->name, connection_info->connections[i].port, string, serial->minor + i);
- }
- }
-
- /* ask for the number of bytes available, but ignore the response as it is broken */
- response = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), VISOR_REQUEST_BYTES_AVAILABLE,
- 0xc2, 0x0000, 0x0005, transfer_buffer, 0x02, 300);
- if (response < 0) {
- err("visor_startup: error getting bytes available request");
- }
-
- kfree (transfer_buffer);
-
- /* continue on with initialization */
- return (0);
-}
-
-
-#endif /* CONFIG_USB_SERIAL_VISOR*/
-
-
-#ifdef CONFIG_USB_SERIAL_FTDI_SIO
-/******************************************************************************
- * FTDI SIO Serial Converter specific driver functions
- ******************************************************************************/
-
-/* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
-/* Thanx to FTDI for so kindly providing details of the protocol required */
-/* to talk to the device */
-
-#include "ftdi_sio.h"
-
-static int ftdi_sio_serial_open (struct tty_struct *tty, struct file *filp)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
- char buf[1]; /* Needed for the usb_control_msg I think */
-
- dbg("ftdi_sio_serial_open port %d", portNumber);
-
- if (port->active) {
- dbg ("device already open");
- return -EINVAL;
- }
- port->active = 1;
-
- usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
- FTDI_SIO_RESET_SIO,
- 0, buf, 0, HZ * 5);
-
- /* FIXME - Should I really purge the buffers? */
- usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
- FTDI_SIO_RESET_PURGE_RX,
- 0, buf, 0, HZ * 5);
-
- usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
- FTDI_SIO_RESET_PURGE_TX,
- 0, buf, 0, HZ * 5);
-
-
- /* As per usb_serial_init s/be CS8, B9600, 1 STOP BIT */
- if ( usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_BAUDRATE_REQUEST,
- FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
- ftdi_sio_b9600, 0,
- buf, 0, HZ * 5) < 0){
- dbg("Error from baudrate urb");
- return(-EINVAL);
- }
-
- if ( usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_DATA_REQUEST,
- FTDI_SIO_SET_DATA_REQUEST_TYPE,
- 8 | FTDI_SIO_SET_DATA_PARITY_NONE |
- FTDI_SIO_SET_DATA_STOP_BITS_1, 0,
- buf, 0, HZ * 5) < 0){
- dbg("Error from cs8/noparity/1 stopbit urb");
- return(-EINVAL);
- }
-
- /* Disable flow control */
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_FLOW_CTRL_REQUEST,
- FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
- 0, 0,
- buf, 0, HZ * 5) < 0) {
- dbg("error from flowcontrol urb");
- return(-EINVAL);
- }
-
- /* Turn on RTS and DTR since we are not flow controlling*/
- /* FIXME - check for correct behaviour clocal vs non clocal */
- /* FIXME - might be able to do both simultaneously */
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- (unsigned)FTDI_SIO_SET_DTR_HIGH, 0,
- buf, 0, HZ * 5) < 0) {
- dbg("Error from DTR HIGH urb");
- }
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- (unsigned)FTDI_SIO_SET_RTS_HIGH, 0,
- buf, 0, HZ * 5) < 0) {
- dbg("Error from RTS HIGH urb");
- }
-
- /*Start reading from the device*/
- if (usb_submit_urb(&port->read_urb))
- dbg("usb_submit_urb(read bulk) failed");
-
- return (0);
-}
-
-
-static void ftdi_sio_serial_close (struct tty_struct *tty, struct file *filp)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
- char buf[1];
-
- dbg("ftdi_sio_serial_close port %d", portNumber);
-
- /* FIXME - might be able to do both simultaneously */
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- (unsigned)FTDI_SIO_SET_DTR_LOW, 0,
- buf, 0, HZ * 5) < 0) {
- dbg("Error from DTR LOW urb");
- }
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- (unsigned)FTDI_SIO_SET_RTS_LOW, 0,
- buf, 0, HZ * 5) < 0) {
- dbg("Error from RTS LOW urb");
- }
-
- /* FIXME Should I flush the device here? - not doing it for now */
-
- /* shutdown our bulk reads and writes */
- usb_unlink_urb (&port->write_urb);
- usb_unlink_urb (&port->read_urb);
- port->active = 0;
-}
-
-
-
-/* The ftdi_sio requires the first byte to have:
- B0 1
- B1 0
- B2..7 length of message excluding byte 0
-*/
-static int ftdi_sio_serial_write (struct tty_struct * tty, int from_user,
- const unsigned char *buf, int count)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
- const int data_offset = 1;
-
- dbg("ftdi_sio_serial_write port %d, %d bytes", portNumber, count);
-
- if (count == 0) {
- dbg("write request of 0 bytes");
- return 0;
- }
-
- /* only do something if we have a bulk out endpoint */
- if (serial->num_bulk_out) {
- unsigned char *first_byte = port->write_urb.transfer_buffer;
-
- if (port->write_urb.status == -EINPROGRESS) {
- dbg ("already writing");
- return 0;
- }
-
- count += data_offset;
- count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
- if (count == 0) {
- return 0;
- }
-
- /* Copy in the data to send */
- if (from_user) {
- copy_from_user(port->write_urb.transfer_buffer + data_offset ,
- buf, count - data_offset );
- }
- else {
- memcpy(port->write_urb.transfer_buffer + data_offset,
- buf, count - data_offset );
- }
-
- /* Write the control byte at the front of the packet*/
- first_byte = port->write_urb.transfer_buffer;
- *first_byte = 1 | ((count-data_offset) << 2) ;
-
-#ifdef DEBUG
- dbg("Bytes: %d, Control Byte: 0o%03o",count, first_byte[0]);
-
- if (count) {
- int i;
- printk (KERN_DEBUG __FILE__ ": data written - length = %d, data = ", count);
- for (i = 0; i < count; ++i) {
- printk ("0x%02x ", first_byte[i]);
- if (first_byte[i] > ' ' && first_byte[i] < '~') {
- printk("%c ", first_byte[i]);
- } else {
- printk(" ");
- }
- }
-
-
- printk ("\n");
- }
-
-#endif
- /* send the data out the bulk port */
- port->write_urb.transfer_buffer_length = count;
-
- if (usb_submit_urb(&port->write_urb))
- dbg("usb_submit_urb(write bulk) failed");
-
- dbg("write returning: %d", count - data_offset);
- return (count - data_offset);
- }
-
- /* no bulk out, so return 0 bytes written */
- return 0;
-}
-
-
-static void ftdi_sio_read_bulk_callback (struct urb *urb)
-{ /* ftdi_sio_serial_buld_callback */
- struct usb_serial *serial = (struct usb_serial *)urb->context;
- struct tty_struct *tty = serial->tty;
- unsigned char *data = urb->transfer_buffer;
- const int data_offset = 2;
- int i;
-
- dbg("ftdi_sio_read_bulk_callback");
-
- if (urb->status) {
- dbg("nonzero read bulk status received: %d", urb->status);
- return;
- }
-
-#ifdef DEBUG
- if (urb->actual_length > 2) {
- printk (KERN_DEBUG __FILE__ ": data read - length = %d, data = ", urb->actual_length);
- for (i = 0; i < urb->actual_length; ++i) {
- printk ("0x%.2x ", data[i]);
- if (data[i] > ' ' && data[i] < '~') {
- printk("%c ", data[i]);
- } else {
- printk(" ");
- }
- }
- printk ("\n");
- }
-#endif
-
-
- if (urb->actual_length > data_offset) {
- for (i = data_offset ; i < urb->actual_length ; ++i) {
- tty_insert_flip_char(tty, data[i], 0);
- }
- tty_flip_buffer_push(tty);
- }
-
- /* Continue trying to always read */
- if (usb_submit_urb(urb))
- dbg("failed resubmitting read urb");
-
- return;
-} /* ftdi_sio_serial_read_bulk_callback */
-
-
-static void ftdi_sio_set_termios (struct tty_struct *tty, struct termios *old_termios)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
- unsigned int cflag = tty->termios->c_cflag;
- __u16 urb_value; /* Will hold the new flags */
- char buf[1]; /* Perhaps I should dynamically alloc this? */
- dbg("ftdi_sio_set_termios port %d", port);
-
- /* FIXME - we should keep the old termios really */
- /* FIXME -For this cut I don't care if the line is really changing or
- not - so just do the change regardless */
-
- /* Set number of data bits, parity, stop bits */
-
- urb_value = 0;
- urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 :
- FTDI_SIO_SET_DATA_STOP_BITS_1);
- urb_value |= (cflag & PARENB ?
- (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD :
- FTDI_SIO_SET_DATA_PARITY_EVEN) :
- FTDI_SIO_SET_DATA_PARITY_NONE);
- if (cflag & CSIZE) {
- switch (cflag & CSIZE) {
- case CS5: urb_value |= 5; dbg("Setting CS5"); break;
- case CS6: urb_value |= 6; dbg("Setting CS6"); break;
- case CS7: urb_value |= 7; dbg("Setting CS7"); break;
- case CS8: urb_value |= 8; dbg("Setting CS8"); break;
- default:
- dbg("CSIZE was set but not CS5-CS8");
- }
- }
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_DATA_REQUEST,
- FTDI_SIO_SET_DATA_REQUEST_TYPE,
- urb_value , 0,
- buf, 0, 100) < 0) {
- dbg("FAILED to set databits/stopbits/parity");
- }
-
- /* Now do the baudrate */
- /* FIXME - should drop lines on B0 */
- /* FIXME Should also handle CLOCAL here */
-
- switch(cflag & CBAUD){
- case B300: urb_value = ftdi_sio_b300; dbg("Set to 300"); break;
- case B600: urb_value = ftdi_sio_b600; dbg("Set to 600") ; break;
- case B1200: urb_value = ftdi_sio_b1200; dbg("Set to 1200") ; break;
- case B2400: urb_value = ftdi_sio_b2400; dbg("Set to 2400") ; break;
- case B4800: urb_value = ftdi_sio_b4800; dbg("Set to 4800") ; break;
- case B9600: urb_value = ftdi_sio_b9600; dbg("Set to 9600") ; break;
- case B19200: urb_value = ftdi_sio_b19200; dbg("Set to 19200") ; break;
- case B38400: urb_value = ftdi_sio_b38400; dbg("Set to 38400") ; break;
- case B57600: urb_value = ftdi_sio_b57600; dbg("Set to 57600") ; break;
- case B115200: urb_value = ftdi_sio_b115200; dbg("Set to 115200") ; break;
- default: dbg("FTDI_SIO does not support the baudrate requested");
- /* FIXME - how to return an error for this? */ break;
- }
- /* Send the URB */
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_BAUDRATE_REQUEST,
- FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
- urb_value, 0,
- buf, 0, 100) < 0) {
- dbg("urb failed to set baurdrate");
- }
- return;
-}
-
-
-/*FIXME - the beginnings of this implementation - not even hooked into the driver yet */
-static int ftdi_sio_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
- __u16 urb_value=0; /* Will hold the new flags */
- char buf[1];
- int ret, mask;
- dbg("ftdi_sio_ioctl port %d", port);
-
- /* Based on code from acm.c */
- switch (cmd) {
-
- case TIOCMGET:
- /* Request the status from the device */
- if ((ret = usb_control_msg(serial->dev,
- usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_GET_MODEM_STATUS_REQUEST,
- FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
- 0, 0,
- buf, 1, HZ * 5)) < 0 ) {
- dbg("Get not get modem status of device");
- return(ret);
- }
-
- return put_user((buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
- (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
- (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) |
- (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0),
- (unsigned long *) arg);
- break;
-
- case TIOCMSET:
- case TIOCMBIS:
- case TIOCMBIC:
- if ((ret = get_user(mask, (unsigned long *) arg))) return ret;
-
- /* FIXME Need to remember if we have set DTR or RTS since we
- can't ask the device */
- /* FIXME - also need to find the meaning of TIOCMBIS/BIC/SET */
- if (mask & TIOCM_DTR) {
- switch(cmd) {
- case TIOCMSET:
- urb_value = FTDI_SIO_SET_DTR_HIGH | FTDI_SIO_SET_RTS_LOW;
- break;
-
- case TIOCMBIS:
- /* Will leave RTS alone and set DTR */
- urb_value = FTDI_SIO_SET_DTR_HIGH;
- break;
-
- case TIOCMBIC:
- urb_value = FTDI_SIO_SET_DTR_LOW;
- break;
- }
- }
-
- if (mask & TIOCM_RTS) {
- switch(cmd) {
- case TIOCMSET:
- urb_value = FTDI_SIO_SET_DTR_LOW | FTDI_SIO_SET_RTS_HIGH;
- break;
-
- case TIOCMBIS:
- /* Will leave DTR and set RTS */
- urb_value = FTDI_SIO_SET_RTS_HIGH;
- break;
-
- case TIOCMBIC:
- /* Will unset RTS */
- urb_value = FTDI_SIO_SET_RTS_LOW;
- break;
- }
- }
-
-
- return(usb_control_msg(serial->dev,
- usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- urb_value , 0,
- buf, 0, HZ * 5));
- }
-
- return -ENOIOCTLCMD;
-}
-
-#endif /* CONFIG_USB_SERIAL_FTDI_SIO */
-
-
-#ifdef CONFIG_USB_SERIAL_KEYSPAN_PDA
-/*****************************************************************************
- * Keyspan PDA specific driver functions
- *****************************************************************************/
-
-static void keyspan_pda_rx_interrupt (struct urb *urb)
-{
- struct usb_serial *serial = (struct usb_serial *) urb->context;
- struct tty_struct *tty = serial->tty;
- unsigned char *data = urb->transfer_buffer;
- int i;
-
- /* the urb might have been killed. */
- if (urb->status)
- return;
-
- /* see if the message is data or a status interrupt */
- switch (data[0]) {
- case 0:
- /* rest of message is rx data */
- if (urb->actual_length) {
- for (i = 1; i < urb->actual_length ; ++i) {
- tty_insert_flip_char(tty, data[i], 0);
- }
- tty_flip_buffer_push(tty);
- }
- break;
- case 1:
- /* status interrupt */
- dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
- switch (data[1]) {
- case 1: /* modemline change */
- break;
- case 2: /* tx unthrottle interrupt */
- serial->tx_throttled = 0;
- wake_up(&serial->write_wait); /* wake up writer */
- break;
- default:
- break;
- }
- break;
- default:
- break;
- }
-
- /* INT urbs are automatically re-submitted */
-}
-
-
-static void keyspan_pda_rx_throttle (struct tty_struct *tty)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
-
- /* stop receiving characters. We just turn off the URB request, and
- let chars pile up in the device. If we're doing hardware
- flowcontrol, the device will signal the other end when its buffer
- fills up. If we're doing XON/XOFF, this would be a good time to
- send an XOFF, although it might make sense to foist that off
- upon the device too. */
-
- dbg("keyspan_pda_rx_throttle port %d", port);
- usb_unlink_urb(&serial->port[port].read_urb);
-}
-
-
-static void keyspan_pda_rx_unthrottle (struct tty_struct *tty)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
-
- /* just restart the receive interrupt URB */
- dbg("keyspan_pda_rx_unthrottle port %d", port);
- if (usb_submit_urb(&serial->port[port].read_urb))
- dbg(" usb_submit_urb(read urb) failed");
- return;
-}
-
-
-static int keyspan_pda_setbaud (struct usb_serial *serial, int baud)
-{
- int rc;
- int bindex;
-
- switch(baud) {
- case 110: bindex = 0; break;
- case 300: bindex = 1; break;
- case 1200: bindex = 2; break;
- case 2400: bindex = 3; break;
- case 4800: bindex = 4; break;
- case 9600: bindex = 5; break;
- case 19200: bindex = 6; break;
- case 38400: bindex = 7; break;
- case 57600: bindex = 8; break;
- case 115200: bindex = 9; break;
- default: return -EINVAL;
- }
-
- /* rather than figure out how to sleep while waiting for this
- to complete, I just use the "legacy" API. */
- rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- 0, /* set baud */
- USB_TYPE_VENDOR
- | USB_RECIP_INTERFACE
- | USB_DIR_OUT, /* type */
- bindex, /* value */
- 0, /* index */
- NULL, /* &data */
- 0, /* size */
- 2*HZ); /* timeout */
- return(rc);
-}
-
-
-static void keyspan_pda_break_ctl (struct tty_struct *tty, int break_state)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int value;
- if (break_state == -1)
- value = 1; /* start break */
- else
- value = 0; /* clear break */
- usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- 4, /* set break */
- USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
- value, 0, NULL, 0, 2*HZ);
- /* there is something funky about this.. the TCSBRK that 'cu' performs
- ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
- seconds apart, but it feels like the break sent isn't as long as it
- is on /dev/ttyS0 */
-}
-
-
-static void keyspan_pda_set_termios (struct tty_struct *tty,
- struct termios *old_termios)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- unsigned int cflag = tty->termios->c_cflag;
-
- /* cflag specifies lots of stuff: number of stop bits, parity, number
- of data bits, baud. What can the device actually handle?:
- CSTOPB (1 stop bit or 2)
- PARENB (parity)
- CSIZE (5bit .. 8bit)
- There is minimal hw support for parity (a PSW bit seems to hold the
- parity of whatever is in the accumulator). The UART either deals
- with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
- 1 special, stop). So, with firmware changes, we could do:
- 8N1: 10 bit
- 8N2: 11 bit, extra bit always (mark?)
- 8[EOMS]1: 11 bit, extra bit is parity
- 7[EOMS]1: 10 bit, b0/b7 is parity
- 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
-
- HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
- bit.
-
- For now, just do baud. */
-
- switch (cflag & CBAUD) {
- /* we could support more values here, just need to calculate
- the necessary divisors in the firmware. <asm/termbits.h>
- has the Bnnn constants. */
- case B110: keyspan_pda_setbaud(serial, 110); break;
- case B300: keyspan_pda_setbaud(serial, 300); break;
- case B1200: keyspan_pda_setbaud(serial, 1200); break;
- case B2400: keyspan_pda_setbaud(serial, 2400); break;
- case B4800: keyspan_pda_setbaud(serial, 4800); break;
- case B9600: keyspan_pda_setbaud(serial, 9600); break;
- case B19200: keyspan_pda_setbaud(serial, 19200); break;
- case B38400: keyspan_pda_setbaud(serial, 38400); break;
- case B57600: keyspan_pda_setbaud(serial, 57600); break;
- case B115200: keyspan_pda_setbaud(serial, 115200); break;
- default: dbg("can't handle requested baud rate"); break;
- }
-}
-
-
-/* modem control pins: DTR and RTS are outputs and can be controlled.
- DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
- read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
-
-static int keyspan_pda_get_modem_info(struct usb_serial *serial,
- unsigned char *value)
-{
- int rc;
- unsigned char data;
- rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- 3, /* get pins */
- USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
- 0, 0, &data, 1, 2*HZ);
- if (rc > 0)
- *value = data;
- return rc;
-}
-
-
-static int keyspan_pda_set_modem_info(struct usb_serial *serial,
- unsigned char value)
-{
- int rc;
- rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- 3, /* set pins */
- USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
- value, 0, NULL, 0, 2*HZ);
- return rc;
-}
-
-
-static int keyspan_pda_ioctl(struct tty_struct *tty, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int rc;
- unsigned int value;
- unsigned char status, mask;
-
- switch (cmd) {
- case TIOCMGET: /* get modem pins state */
- rc = keyspan_pda_get_modem_info(serial, &status);
- if (rc < 0)
- return rc;
- value =
- ((status & (1<<7)) ? TIOCM_DTR : 0) |
- ((status & (1<<6)) ? TIOCM_CAR : 0) |
- ((status & (1<<5)) ? TIOCM_RNG : 0) |
- ((status & (1<<4)) ? TIOCM_DSR : 0) |
- ((status & (1<<3)) ? TIOCM_CTS : 0) |
- ((status & (1<<2)) ? TIOCM_RTS : 0);
- if (copy_to_user((unsigned int *)arg, &value, sizeof(int)))
- return -EFAULT;
- return 0;
- case TIOCMSET: /* set a state as returned by MGET */
- if (copy_from_user(&value, (unsigned int *)arg, sizeof(int)))
- return -EFAULT;
- status =
- ((value & TIOCM_DTR) ? (1<<7) : 0) |
- ((value & TIOCM_CAR) ? (1<<6) : 0) |
- ((value & TIOCM_RNG) ? (1<<5) : 0) |
- ((value & TIOCM_DSR) ? (1<<4) : 0) |
- ((value & TIOCM_CTS) ? (1<<3) : 0) |
- ((value & TIOCM_RTS) ? (1<<2) : 0);
- rc = keyspan_pda_set_modem_info(serial, status);
- if (rc < 0)
- return rc;
- return 0;
- case TIOCMBIS: /* set bits in bitmask <arg> */
- case TIOCMBIC: /* clear bits from bitmask <arg> */
- if (copy_from_user(&value, (unsigned int *)arg, sizeof(int)))
- return -EFAULT;
- rc = keyspan_pda_get_modem_info(serial, &status);
- if (rc < 0)
- return rc;
- mask =
- ((value & TIOCM_RTS) ? (1<<2) : 0) |
- ((value & TIOCM_DTR) ? (1<<7) : 0);
- if (cmd == TIOCMBIS)
- status |= mask;
- else
- status &= ~mask;
- rc = keyspan_pda_set_modem_info(serial, status);
- if (rc < 0)
- return rc;
- return 0;
- case TIOCMIWAIT:
- /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
- /* TODO */
- case TIOCGICOUNT:
- /* return count of modemline transitions */
- return 0; /* TODO */
- }
-
- return -ENOIOCTLCMD;
-}
-
-static int keyspan_pda_write(struct tty_struct * tty, int from_user,
- const unsigned char *buf, int count)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int port = MINOR(tty->device) - serial->minor;
- int request_unthrottle = 0;
- int rc = 0;
- DECLARE_WAITQUEUE(wait, current);
-
- /* guess how much room is left in the device's ring buffer, and if we
- want to send more than that, check first, updating our notion of
- what is left. If our write will result in no room left, ask the
- device to give us an interrupt when the room available rises above
- a threshold, and hold off all writers (eventually, those using
- select() or poll() too) until we receive that unthrottle interrupt.
- Block if we can't write anything at all, otherwise write as much as
- we can. */
-
- if (count == 0) {
- dbg(" write request of 0 bytes");
- return (0);
- }
-
- /* we might block because of:
- the TX urb is in-flight (wait until it completes)
- the device is full (wait until it says there is room)
- */
- while (serial->port[port].write_urb.status == -EINPROGRESS) {
- if (0 /* file->f_flags & O_NONBLOCK */) {
- rc = -EAGAIN;
- goto err;
- }
- interruptible_sleep_on(&serial->write_wait);
- if (signal_pending(current)) {
- rc = -ERESTARTSYS;
- goto err;
- }
- }
-
- /* at this point the URB is in our control, nobody else can submit it
- again (the only sudden transition was the one from EINPROGRESS to
- finished) */
-
- /* the next potential block is that our TX process might be throttled.
- The transition from throttled->not happens because of an Rx
- interrupt, and the wake_up occurs during the same interrupt, so we
- have to be careful to avoid a race that would cause us to sleep
- forever. */
-
- add_wait_queue(&serial->write_wait, &wait);
- set_current_state(TASK_INTERRUPTIBLE);
- while (serial->tx_throttled) {
- /* device can't accomodate any more characters. Sleep until it
- can. Woken up by an Rx interrupt message, which clears
- tx_throttled first. */
- dbg(" tx_throttled, going to sleep");
- if (signal_pending(current)) {
- current->state = TASK_RUNNING;
- remove_wait_queue(&serial->write_wait, &wait);
- dbg(" woke up because of signal");
- rc = -ERESTARTSYS;
- goto err;
- }
- schedule();
- dbg(" woke up");
- }
- remove_wait_queue(&serial->write_wait, &wait);
- set_current_state(TASK_RUNNING);
-
- count = (count > serial->port[port].bulk_out_size) ?
- serial->port[port].bulk_out_size : count;
- if (count > serial->tx_room) {
- unsigned char room;
- /* Looks like we might overrun the Tx buffer. Ask the device
- how much room it really has */
- rc = usb_control_msg(serial->dev,
- usb_rcvctrlpipe(serial->dev, 0),
- 6, /* write_room */
- USB_TYPE_VENDOR | USB_RECIP_INTERFACE
- | USB_DIR_IN,
- 0, /* value: 0 means "remaining room" */
- 0, /* index */
- &room,
- 1,
- 2*HZ);
- if (rc < 0) {
- dbg(" roomquery failed");
- return rc; /* failed */
- }
- if (rc == 0) {
- dbg(" roomquery returned 0 bytes");
- return -EIO; /* device didn't return any data */
- }
- dbg(" roomquery says %d", room);
- serial->tx_room = room;
- if (count > serial->tx_room) {
- /* we're about to completely fill the Tx buffer, so
- we'll be throttled afterwards. */
- count = serial->tx_room;
- request_unthrottle = 1;
- }
- }
- serial->tx_room -= count;
-
- if (count) {
- /* now transfer data */
- if (from_user) {
- copy_from_user(serial->port[port].write_urb.transfer_buffer,
- buf, count);
- }
- else {
- memcpy (serial->port[port].write_urb.transfer_buffer,
- buf, count);
- }
- /* send the data out the bulk port */
- serial->port[port].write_urb.transfer_buffer_length = count;
-
- if (usb_submit_urb(&serial->port[port].write_urb))
- dbg(" usb_submit_urb(write bulk) failed");
- }
- else {
- /* There wasn't any room left, so we are throttled until
- the buffer empties a bit */
- request_unthrottle = 1;
- }
-
- if (request_unthrottle) {
- dbg(" request_unthrottle");
- /* ask the device to tell us when the tx buffer becomes
- sufficiently empty */
- serial->tx_throttled = 1; /* block writers */
- rc = usb_control_msg(serial->dev,
- usb_sndctrlpipe(serial->dev, 0),
- 7, /* request_unthrottle */
- USB_TYPE_VENDOR | USB_RECIP_INTERFACE
- | USB_DIR_OUT,
- 16, /* value: threshold */
- 0, /* index */
- NULL,
- 0,
- 2*HZ);
- }
-
- return (count);
- err:
- return (rc);
-}
-
-
-static void keyspan_pda_write_bulk_callback (struct urb *urb)
-{
- struct usb_serial *serial = (struct usb_serial *) urb->context;
- struct tty_struct *tty = serial->tty;
-
- wake_up_interruptible(&serial->write_wait);
-
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
-
- wake_up_interruptible(&tty->write_wait);
-}
-
-
-static int keyspan_pda_write_room (struct tty_struct *tty)
-{
- struct usb_serial *serial = (struct usb_serial *)tty->driver_data;
-
- /* used by n_tty.c for processing of tabs and such. Giving it our
- conservative guess is probably good enough, but needs testing by
- running a console through the device. */
-
- return (serial->tx_room);
-}
-
-
-static int keyspan_pda_chars_in_buffer (struct tty_struct *tty)
-{
- struct usb_serial *serial = (struct usb_serial *)tty->driver_data;
- unsigned char count;
- int rc;
-
- /* used by tty stuff to wait for output to drain. Go ask the
- device how much is still queued in the tx ring */
- rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- 6, /* write_room */
- USB_TYPE_VENDOR | USB_RECIP_INTERFACE
- | USB_DIR_IN,
- 1, /* value: 1 means chars_in_buffer */
- 0, /* index */
- &count,
- 1,
- 2*HZ);
- if (rc < 0)
- return rc; /* failed */
- if (rc == 0)
- return -EIO; /* device didn't return any data */
- return (count);
-}
-
-
-static int keyspan_pda_serial_open (struct tty_struct *tty, struct file *filp)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
- unsigned char room;
- int rc;
-
- if (port->active) {
- return -EINVAL;
- }
- port->active = 1;
-
- /* find out how much room is in the Tx ring */
- rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- 6, /* write_room */
- USB_TYPE_VENDOR | USB_RECIP_INTERFACE
- | USB_DIR_IN,
- 0, /* value */
- 0, /* index */
- &room,
- 1,
- 2*HZ);
- if (rc < 0) {
- dbg(" roomquery failed");
- return rc; /* failed */
- }
- if (rc == 0) {
- dbg(" roomquery returned 0 bytes");
- return -EIO; /* device didn't return any data */
- }
- serial->tx_room = room;
- serial->tx_throttled = room ? 0 : 1;
-
- /* the normal serial device seems to always turn on DTR and RTS here,
- so do the same */
- if (tty->termios->c_cflag & CBAUD)
- keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2) );
- else
- keyspan_pda_set_modem_info(serial, 0);
-
- /*Start reading from the device*/
- if (usb_submit_urb(&port->read_urb))
- dbg(" usb_submit_urb(read int) failed");
-
- return (0);
-}
-
-
-static void keyspan_pda_serial_close(struct tty_struct *tty,
- struct file *filp)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
-
- /* the normal serial device seems to always shut off DTR and RTS now */
- if (tty->termios->c_cflag & HUPCL)
- keyspan_pda_set_modem_info(serial, 0);
-
- /* shutdown our bulk reads and writes */
- usb_unlink_urb (&port->write_urb);
- usb_unlink_urb (&port->read_urb);
- port->active = 0;
-}
-
-
-/* download the firmware to a "fake" device (pre-renumeration) */
-static int keyspan_pda_fake_startup (struct usb_serial *serial)
-{
- int response;
- const struct ezusb_hex_record *record;
-
- /* download the firmware here ... */
- response = ezusb_set_reset(serial, 1);
-
- record = &keyspan_pda_firmware[0];
- while(record->address != 0xffff) {
- response = ezusb_writememory(serial, record->address,
- (unsigned char *)record->data,
- record->data_size, 0xa0);
- if (response < 0) {
- err("ezusb_writememory failed for Keyspan PDA "
- "firmware (%d %04X %p %d)",
- response,
- record->address, record->data, record->data_size);
- break;
- }
- record++;
- }
- /* bring device out of reset. Renumeration will occur in a moment
- and the new device will bind to the real driver */
- response = ezusb_set_reset(serial, 0);
-
- /* we want this device to fail to have a driver assigned to it. */
- return (1);
-}
-
-
-/* do some startup allocations not currently performed by usb_serial_probe() */
-static int keyspan_pda_startup (struct usb_serial *serial)
-{
- struct usb_endpoint_descriptor *intin;
- intin = serial->port[0].interrupt_in_endpoint;
-
- /* set up the receive interrupt urb */
- FILL_INT_URB(&serial->port[0].read_urb, serial->dev,
- usb_rcvintpipe(serial->dev, intin->bEndpointAddress),
- serial->port[0].interrupt_in_buffer,
- intin->wMaxPacketSize,
- keyspan_pda_rx_interrupt,
- serial,
- intin->bInterval);
-
- init_waitqueue_head(&serial->write_wait);
-
- return (0);
-}
-
-#endif /* CONFIG_USB_SERIAL_KEYSPAN_PDA */
-
-
-/*****************************************************************************
- * generic devices specific driver functions
- *****************************************************************************/
-static int generic_serial_open (struct tty_struct *tty, struct file *filp)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
-
- dbg("generic_serial_open port %d", portNumber);
-
- if (port->active) {
- dbg ("device already open");
- return -EINVAL;
- }
- port->active = 1;
-
- /* if we have a bulk interrupt, start reading from it */
- if (serial->num_bulk_in) {
- /*Start reading from the device*/
- if (usb_submit_urb(&port->read_urb))
- dbg("usb_submit_urb(read bulk) failed");
- }
-
- return (0);
-}
-
-
-static void generic_serial_close(struct tty_struct *tty, struct file * filp)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
-
- dbg("generic_serial_close port %d", portNumber);
-
- /* 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);
- }
-
- port->active = 0;
-}
-
-
-static int generic_serial_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count)
-{
- struct usb_serial *serial = (struct usb_serial *) tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
-
- dbg("generic_serial_write port %d", portNumber);
-
- if (count == 0) {
- dbg("write request of 0 bytes");
- return (0);
- }
-
- /* only do something if we have a bulk out endpoint */
- if (serial->num_bulk_out) {
- if (port->write_urb.status == -EINPROGRESS) {
- dbg ("already writing");
- return (0);
- }
-
- count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
-
- if (from_user) {
- copy_from_user(port->write_urb.transfer_buffer, buf, count);
- }
- else {
- memcpy (port->write_urb.transfer_buffer, buf, count);
- }
-
- /* send the data out the bulk port */
- port->write_urb.transfer_buffer_length = count;
-
- if (usb_submit_urb(&port->write_urb))
- dbg("usb_submit_urb(write bulk) failed");
-
- return (count);
- }
-
- /* no bulk out, so return 0 bytes written */
- return (0);
-}
-
-
-static int generic_write_room (struct tty_struct *tty)
-{
- struct usb_serial *serial = (struct usb_serial *)tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
- int room;
-
- dbg("generic_write_room port %d", portNumber);
-
- if (serial->num_bulk_out) {
- if (port->write_urb.status == -EINPROGRESS)
- room = 0;
- else
- room = port->bulk_out_size;
- dbg("generic_write_room returns %d", room);
- return (room);
- }
-
- return (0);
-}
-
-
-static int generic_chars_in_buffer (struct tty_struct *tty)
-{
- struct usb_serial *serial = (struct usb_serial *)tty->driver_data;
- int portNumber = MINOR(tty->device) - serial->minor;
- struct usb_serial_port *port = &serial->port[portNumber];
-
- dbg("generic_chars_in_buffer port %d", portNumber);
-
- if (serial->num_bulk_out) {
- if (port->write_urb.status == -EINPROGRESS) {
- return (port->bulk_out_size);
- }
- }
-
- return (0);
-}
-
-
-static void generic_throttle (struct tty_struct *tty)
-{
- /* do nothing for the generic device */
- return;
-}
-
-
-static void generic_unthrottle (struct tty_struct *tty)
-{
- /* do nothing for the generic device */
- return;
-}
-
-
-static int generic_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
-{
- /* generic driver doesn't support any ioctls yet */
- return -ENOIOCTLCMD;
-}
-
-
-static void generic_set_termios (struct tty_struct *tty, struct termios * old)
-{
- /* generic driver doesn't really care about setting any line settings */
- return;
-}
-
-
-static void generic_read_bulk_callback (struct urb *urb)
-{
- struct usb_serial *serial = (struct usb_serial *)urb->context;
- struct tty_struct *tty = serial->tty;
- unsigned char *data = urb->transfer_buffer;
- int i;
-
- dbg("generic_read_bulk_callback");
-
- if (urb->status) {
- dbg("nonzero read bulk status received: %d", urb->status);
- return;
- }
-
-#ifdef DEBUG
- if (urb->actual_length) {
- printk (KERN_DEBUG __FILE__ ": data read - length = %d, data = ", urb->actual_length);
- for (i = 0; i < urb->actual_length; ++i) {
- printk ("%.2x ", data[i]);
- }
- printk ("\n");
- }
-#endif
-
- if (urb->actual_length) {
- for (i = 0; i < urb->actual_length ; ++i) {
- tty_insert_flip_char(tty, data[i], 0);
- }
- tty_flip_buffer_push(tty);
- }
-
- /* Continue trying to always read */
- if (usb_submit_urb(urb))
- dbg("failed resubmitting read urb");
-
- return;
-}
-
-
-static void generic_write_bulk_callback (struct urb *urb)
-{
- struct usb_serial *serial = (struct usb_serial *) urb->context;
- struct tty_struct *tty = serial->tty;
-
- dbg("generic_write_bulk_callback");
-
- if (urb->status) {
- dbg("nonzero write bulk status received: %d", urb->status);
- return;
- }
-
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
-
- wake_up_interruptible(&tty->write_wait);
-
- return;
-}
-
-
-
-static void * usb_serial_probe(struct usb_device *dev, unsigned int ifnum)
-{
- struct usb_serial *serial = NULL;
- struct usb_serial_port *port;
- struct usb_interface_descriptor *interface;
- struct usb_endpoint_descriptor *endpoint;
- struct usb_endpoint_descriptor *interrupt_in_endpoint[MAX_NUM_PORTS];
- struct usb_endpoint_descriptor *bulk_in_endpoint[MAX_NUM_PORTS];
- struct usb_endpoint_descriptor *bulk_out_endpoint[MAX_NUM_PORTS];
- struct usb_serial_device_type *type;
- int device_num;
- int minor;
- int buffer_size;
- int i;
- char interrupt_pipe;
- char bulk_in_pipe;
- char bulk_out_pipe;
- int num_interrupt_in = 0;
- int num_bulk_in = 0;
- int num_bulk_out = 0;
- int num_ports;
-
- /* loop through our list of known serial converters, and see if this device matches */
- device_num = 0;
- while (usb_serial_devices[device_num] != NULL) {
- type = usb_serial_devices[device_num];
- dbg ("Looking at %s Vendor id=%.4x Product id=%.4x", type->name, *(type->idVendor), *(type->idProduct));
-
- /* look at the device descriptor */
- if ((dev->descriptor.idVendor == *(type->idVendor)) &&
- (dev->descriptor.idProduct == *(type->idProduct))) {
-
- dbg("descriptor matches...looking at the endpoints");
-
- /* descriptor matches, let's try to find the endpoints needed */
- interrupt_pipe = bulk_in_pipe = bulk_out_pipe = HAS_NOT;
-
- /* check out the endpoints */
- interface = &dev->actconfig->interface[ifnum].altsetting[0];
- for (i = 0; i < interface->bNumEndpoints; ++i) {
- endpoint = &interface->endpoint[i];
-
- if ((endpoint->bEndpointAddress & 0x80) &&
- ((endpoint->bmAttributes & 3) == 0x02)) {
- /* we found a bulk in endpoint */
- dbg("found bulk in");
- bulk_in_pipe = HAS;
- bulk_in_endpoint[num_bulk_in] = endpoint;
- ++num_bulk_in;
- }
-
- if (((endpoint->bEndpointAddress & 0x80) == 0x00) &&
- ((endpoint->bmAttributes & 3) == 0x02)) {
- /* we found a bulk out endpoint */
- dbg("found bulk out");
- bulk_out_pipe = HAS;
- bulk_out_endpoint[num_bulk_out] = endpoint;
- ++num_bulk_out;
- }
-
- if ((endpoint->bEndpointAddress & 0x80) &&
- ((endpoint->bmAttributes & 3) == 0x03)) {
- /* we found a interrupt in endpoint */
- dbg("found interrupt in");
- interrupt_pipe = HAS;
- interrupt_in_endpoint[num_interrupt_in] = endpoint;
- ++num_interrupt_in;
- }
-
- }
-
- /* verify that we found all of the endpoints that we need */
- if ((interrupt_pipe & type->needs_interrupt_in) &&
- (bulk_in_pipe & type->needs_bulk_in) &&
- (bulk_out_pipe & type->needs_bulk_out)) {
- /* found all that we need */
- info("%s converter detected", type->name);
-
-#ifdef CONFIG_USB_SERIAL_GENERIC
- if (type == &generic_device)
- num_ports = num_bulk_out;
- else
-#endif
- num_ports = type->num_ports;
-
- serial = get_free_serial (num_ports, &minor);
- if (serial == NULL) {
- err("No more free serial devices");
- return NULL;
- }
-
- serial->dev = dev;
- serial->type = type;
- serial->minor = minor;
- serial->num_ports = num_ports;
- serial->num_bulk_in = num_bulk_in;
- serial->num_bulk_out = num_bulk_out;
- serial->num_interrupt_in = num_interrupt_in;
-
- /* collect interrupt_in endpoints now, because
- the keyspan_pda startup function needs
- to know about them */
- for (i = 0; i < num_interrupt_in; ++i) {
- port = &serial->port[i];
- buffer_size = interrupt_in_endpoint[i]->wMaxPacketSize;
- port->interrupt_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
- if (!port->interrupt_in_buffer) {
- err("Couldn't allocate interrupt_in_buffer");
- goto probe_error;
- }
- port->interrupt_in_endpoint = interrupt_in_endpoint[i];
- }
-
- /* if this device type has a startup function, call it */
- if (type->startup) {
- if (type->startup (serial)) {
- return_serial (serial);
- return NULL;
- }
- }
-
- /* set up the endpoint information */
- for (i = 0; i < num_bulk_in; ++i) {
- port = &serial->port[i];
- buffer_size = bulk_in_endpoint[i]->wMaxPacketSize;
- port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
- if (!port->bulk_in_buffer) {
- err("Couldn't allocate bulk_in_buffer");
- goto probe_error;
- }
- if (serial->type->read_bulk_callback) {
- FILL_BULK_URB(&port->read_urb, dev, usb_rcvbulkpipe (dev, bulk_in_endpoint[i]->bEndpointAddress),
- port->bulk_in_buffer, buffer_size, serial->type->read_bulk_callback, serial);
- } else {
- FILL_BULK_URB(&port->read_urb, dev, usb_rcvbulkpipe (dev, bulk_in_endpoint[i]->bEndpointAddress),
- port->bulk_in_buffer, buffer_size, generic_read_bulk_callback, serial);
- }
- }
-
- for (i = 0; i < num_bulk_out; ++i) {
- port = &serial->port[i];
- port->bulk_out_size = bulk_out_endpoint[i]->wMaxPacketSize;
- port->bulk_out_buffer = kmalloc (port->bulk_out_size, GFP_KERNEL);
- if (!port->bulk_out_buffer) {
- err("Couldn't allocate bulk_out_buffer");
- goto probe_error;
- }
- if (serial->type->write_bulk_callback) {
- FILL_BULK_URB(&port->write_urb, dev, usb_sndbulkpipe (dev, bulk_out_endpoint[i]->bEndpointAddress),
- port->bulk_out_buffer, port->bulk_out_size, serial->type->write_bulk_callback, serial);
- } else {
- FILL_BULK_URB(&port->write_urb, dev, usb_sndbulkpipe (dev, bulk_out_endpoint[i]->bEndpointAddress),
- port->bulk_out_buffer, port->bulk_out_size, generic_write_bulk_callback, serial);
- }
- }
-
-#if 0 /* use this code when WhiteHEAT is up and running */
- for (i = 0; i < num_interrupt_in; ++i) {
- buffer_size = interrupt_in_endpoint[i]->wMaxPacketSize;
- serial->interrupt_in_buffer[i] = kmalloc (buffer_size, GFP_KERNEL);
- if (!serial->interrupt_in_buffer[i]) {
- err("Couldn't allocate interrupt_in_buffer");
- goto probe_error;
- }
- FILL_INT_URB(&serial->control_urb[i], dev, usb_rcvintpipe (dev, interrupt_in_endpoint[i]->bEndpointAddress),
- serial->interrupt_in_buffer[i], buffer_size, serial_control_irq,
- serial, interrupt_in_endpoint[i]->bInterval);
- }
-#endif
-
- for (i = 0; i < serial->num_ports; ++i) {
- info("%s converter now attached to ttyUSB%d", type->name, serial->minor + i);
- }
-
- MOD_INC_USE_COUNT;
-
- return serial;
- } else {
- info("descriptors matched, but endpoints did not");
- }
- }
-
- /* look at the next type in our list */
- ++device_num;
- }
-
-probe_error:
- if (serial) {
- for (i = 0; i < num_bulk_in; ++i)
- if (serial->port[i].bulk_in_buffer[i])
- kfree (serial->port[i].bulk_in_buffer);
- for (i = 0; i < num_bulk_out; ++i)
- if (serial->port[i].bulk_out_buffer)
- kfree (serial->port[i].bulk_out_buffer);
- for (i = 0; i < num_interrupt_in; ++i)
- if (serial->port[i].interrupt_in_buffer)
- kfree (serial->port[i].interrupt_in_buffer);
-
- /* return the minor range that this device had */
- return_serial (serial);
-
- /* free up any memory that we allocated */
- kfree (serial);
- }
- return NULL;
-}
-
-
-static void usb_serial_disconnect(struct usb_device *dev, void *ptr)
-{
- struct usb_serial *serial = (struct usb_serial *) ptr;
- struct usb_serial_port *port;
- int i;
-
- if (serial) {
- /* need to stop any transfers...*/
- for (i = 0; i < serial->num_ports; ++i) {
- port = &serial->port[i];
- usb_unlink_urb (&port->write_urb);
- usb_unlink_urb (&port->read_urb);
- port->active = 0;
- }
-
- /* free up any memory that we allocated */
- for (i = 0; i < serial->num_bulk_in; ++i) {
- port = &serial->port[i];
- if (port->bulk_in_buffer)
- kfree (port->bulk_in_buffer);
- }
- for (i = 0; i < serial->num_bulk_out; ++i) {
- port = &serial->port[i];
- if (port->bulk_out_buffer)
- kfree (port->bulk_out_buffer);
- }
- for (i = 0; i < serial->num_interrupt_in; ++i) {
- port = &serial->port[i];
- if (port->interrupt_in_buffer)
- kfree (port->interrupt_in_buffer);
- }
-
- for (i = 0; i < serial->num_ports; ++i) {
- info("%s converter now disconnected from ttyUSB%d", serial->type->name, serial->minor + i);
- }
-
- /* return the minor range that this device had */
- return_serial (serial);
-
- /* free up any memory that we allocated */
- kfree (serial);
-
- } else {
- info("device disconnected");
- }
-
- MOD_DEC_USE_COUNT;
-}
-
-
-static struct tty_driver serial_tty_driver = {
- magic: TTY_DRIVER_MAGIC,
- driver_name: "usb",
- name: "ttyUSB",
- major: SERIAL_TTY_MAJOR,
- minor_start: 0,
- num: SERIAL_TTY_MINORS,
- type: TTY_DRIVER_TYPE_SERIAL,
- subtype: SERIAL_TYPE_NORMAL,
- flags: TTY_DRIVER_REAL_RAW,
- refcount: &serial_refcount,
- table: serial_tty,
- proc_entry: NULL,
- other: NULL,
- termios: serial_termios,
- termios_locked: serial_termios_locked,
-
- open: serial_open,
- close: serial_close,
- write: serial_write,
- put_char: NULL,
- flush_chars: NULL,
- write_room: serial_write_room,
- ioctl: serial_ioctl,
- set_termios: serial_set_termios,
- set_ldisc: NULL,
- throttle: serial_throttle,
- unthrottle: serial_unthrottle,
- stop: NULL,
- start: NULL,
- hangup: NULL,
- break_ctl: serial_break,
- wait_until_sent: NULL,
- send_xchar: NULL,
- read_proc: NULL,
- chars_in_buffer: serial_chars_in_buffer,
- flush_buffer: NULL
-};
-
-
-int usb_serial_init(void)
-{
- int i;
-
- /* Initalize our global data */
- for (i = 0; i < SERIAL_TTY_MINORS; ++i) {
- serial_table[i] = NULL;
- }
-
- /* register the tty driver */
- serial_tty_driver.init_termios = tty_std_termios;
- serial_tty_driver.init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
- if (tty_register_driver (&serial_tty_driver)) {
- err("failed to register tty driver");
- return -EPERM;
- }
-
- /* register the USB driver */
- if (usb_register(&usb_serial_driver) < 0) {
- tty_unregister_driver(&serial_tty_driver);
- return -1;
- }
-
- info("support registered");
- return 0;
-}
-
-
-void usb_serial_exit(void)
-{
- tty_unregister_driver(&serial_tty_driver);
- usb_deregister(&usb_serial_driver);
-}
-
-
-module_init(usb_serial_init);
-module_exit(usb_serial_exit);
-
-
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)