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linux/drivers/usb/serial/visor.c

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* USB HandSpring Visor, Palm m50x, and Sony Clie driver
* (supports all of the Palm OS USB devices)
*
* Copyright (C) 1999 - 2004
* 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.
*
* See Documentation/usb/usb-serial.txt for more information on using this driver
*
* (06/03/2003) Judd Montgomery <judd at jpilot.org>
* Added support for module parameter options for untested/unknown
* devices.
*
* (03/09/2003) gkh
* Added support for the Sony Clie NZ90V device. Thanks to Martin Brachtl
* <brachtl@redgrep.cz> for the information.
*
* (03/05/2003) gkh
* Think Treo support is now working.
*
* (04/03/2002) gkh
* Added support for the Sony OS 4.1 devices. Thanks to Hiroyuki ARAKI
* <hiro@zob.ne.jp> for the information.
*
* (03/27/2002) gkh
* Removed assumptions that port->tty was always valid (is not true
* for usb serial console devices.)
*
* (03/23/2002) gkh
* Added support for the Palm i705 device, thanks to Thomas Riemer
* <tom@netmech.com> for the information.
*
* (03/21/2002) gkh
* Added support for the Palm m130 device, thanks to Udo Eisenbarth
* <udo.eisenbarth@web.de> for the information.
*
* (02/27/2002) gkh
* Reworked the urb handling logic. We have no more pool, but dynamically
* allocate the urb and the transfer buffer on the fly. In testing this
* does not incure any measurable overhead. This also relies on the fact
* that we have proper reference counting logic for urbs.
*
* (02/21/2002) SilaS
* Added initial support for the Palm m515 devices.
*
* (02/14/2002) gkh
* Added support for the Clie S-360 device.
*
* (12/18/2001) gkh
* Added better Clie support for 3.5 devices. Thanks to Geoffrey Levand
* for the patch.
*
* (11/11/2001) gkh
* Added support for the m125 devices, and added check to prevent oopses
* for Cli<EFBFBD> devices that lie about the number of ports they have.
*
* (08/30/2001) gkh
* Added support for the Clie devices, both the 3.5 and 4.0 os versions.
* Many thanks to Daniel Burke, and Bryan Payne for helping with this.
*
* (08/23/2001) gkh
* fixed a few potential bugs pointed out by Oliver Neukum.
*
* (05/30/2001) gkh
* switched from using spinlock to a semaphore, which fixes lots of problems.
*
* (05/28/2000) gkh
* Added initial support for the Palm m500 and Palm m505 devices.
*
* (04/08/2001) gb
* Identify version on module load.
*
* (01/21/2000) gkh
* Added write_room and chars_in_buffer, as they were previously using the
* generic driver versions which is all wrong now that we are using an urb
* pool. Thanks to Wolfgang Grandegger for pointing this out to me.
* Removed count assignment in the write function, which was not needed anymore
* either. Thanks to Al Borchers for pointing this out.
*
* (12/12/2000) gkh
* Moved MOD_DEC to end of visor_close to be nicer, as the final write
* message can sleep.
*
* (11/12/2000) gkh
* Fixed bug with data being dropped on the floor by forcing tty->low_latency
* to be on. Hopefully this fixes the OHCI issue!
*
* (11/01/2000) Adam J. Richter
* usb_device_id table support
*
* (10/05/2000) gkh
* Fixed bug with urb->dev not being set properly, now that the usb
* core needs it.
*
* (09/11/2000) gkh
* Got rid of always calling kmalloc for every urb we wrote out to the
* device.
* Added visor_read_callback so we can keep track of bytes in and out for
* those people who like to know the speed of their device.
* Removed DEBUG #ifdefs with call to usb_serial_debug_data
*
* (09/06/2000) gkh
* Fixed oops in visor_exit. Need to uncomment usb_unlink_urb call _after_
* the host controller drivers set urb->dev = NULL when the urb is finished.
*
* (08/28/2000) gkh
* Added locks for SMP safeness.
*
* (08/08/2000) gkh
* Fixed endian problem in visor_startup.
* Fixed MOD_INC and MOD_DEC logic and the ability to open a port more
* than once.
*
* (07/23/2000) gkh
* Added pool of write urbs to speed up transfers to the visor.
*
* (07/19/2000) gkh
* Added module_init and module_exit functions to handle the fact that this
* driver is a loadable module now.
*
* (07/03/2000) gkh
* Added visor_set_ioctl and visor_set_termios functions (they don't do much
* of anything, but are good for debugging.)
*
* (06/25/2000) gkh
* Fixed bug in visor_unthrottle that should help with the disconnect in PPP
* bug that people have been reporting.
*
* (06/23/2000) gkh
* Cleaned up debugging statements in a quest to find UHCI timeout bug.
*
* (04/27/2000) Ryan VanderBijl
* Fixed memory leak in visor_close
*
* (03/26/2000) gkh
* Split driver up into device specific pieces.
*
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/spinlock.h>
#include <asm/uaccess.h>
#include <linux/usb.h>
#include "usb-serial.h"
#include "visor.h"
/*
* Version Information
*/
#define DRIVER_VERSION "v2.1"
#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
#define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
/* function prototypes for a handspring visor */
static int visor_open (struct usb_serial_port *port, struct file *filp);
static void visor_close (struct usb_serial_port *port, struct file *filp);
static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count);
static int visor_write_room (struct usb_serial_port *port);
static int visor_chars_in_buffer (struct usb_serial_port *port);
static void visor_throttle (struct usb_serial_port *port);
static void visor_unthrottle (struct usb_serial_port *port);
static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id);
static int visor_calc_num_ports(struct usb_serial *serial);
static void visor_shutdown (struct usb_serial *serial);
static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
static void visor_set_termios (struct usb_serial_port *port, struct termios *old_termios);
static void visor_write_bulk_callback (struct urb *urb, struct pt_regs *regs);
static void visor_read_bulk_callback (struct urb *urb, struct pt_regs *regs);
static void visor_read_int_callback (struct urb *urb, struct pt_regs *regs);
static int clie_3_5_startup (struct usb_serial *serial);
static int treo_attach (struct usb_serial *serial);
static int clie_5_attach (struct usb_serial *serial);
static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id);
static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id);
/* Parameters that may be passed into the module. */
static int debug;
static __u16 vendor;
static __u16 product;
static struct usb_device_id id_table [] = {
{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
.driver_info = (kernel_ulong_t)&palm_os_3_probe },
{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ }, /* optional parameter entry */
{ } /* Terminating entry */
};
static struct usb_device_id clie_id_5_table [] = {
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
.driver_info = (kernel_ulong_t)&palm_os_4_probe },
{ }, /* optional parameter entry */
{ } /* Terminating entry */
};
static struct usb_device_id clie_id_3_5_table [] = {
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
{ } /* Terminating entry */
};
static struct usb_device_id id_table_combined [] = {
{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID) },
{ USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
{ USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
{ USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
{ USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
{ USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
{ }, /* optional parameter entry */
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, id_table_combined);
static struct usb_driver visor_driver = {
.owner = THIS_MODULE,
.name = "visor",
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
.id_table = id_table_combined,
};
/* All of the device info needed for the Handspring Visor, and Palm 4.0 devices */
static struct usb_serial_device_type handspring_device = {
.owner = THIS_MODULE,
.name = "Handspring Visor / Palm OS",
.short_name = "visor",
.id_table = id_table,
.num_interrupt_in = NUM_DONT_CARE,
.num_bulk_in = 2,
.num_bulk_out = 2,
.num_ports = 2,
.open = visor_open,
.close = visor_close,
.throttle = visor_throttle,
.unthrottle = visor_unthrottle,
.attach = treo_attach,
.probe = visor_probe,
.calc_num_ports = visor_calc_num_ports,
.shutdown = visor_shutdown,
.ioctl = visor_ioctl,
.set_termios = visor_set_termios,
.write = visor_write,
.write_room = visor_write_room,
.chars_in_buffer = visor_chars_in_buffer,
.write_bulk_callback = visor_write_bulk_callback,
.read_bulk_callback = visor_read_bulk_callback,
.read_int_callback = visor_read_int_callback,
};
/* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
static struct usb_serial_device_type clie_5_device = {
.owner = THIS_MODULE,
.name = "Sony Clie 5.0",
.short_name = "clie_5",
.id_table = clie_id_5_table,
.num_interrupt_in = NUM_DONT_CARE,
.num_bulk_in = 2,
.num_bulk_out = 2,
.num_ports = 2,
.open = visor_open,
.close = visor_close,
.throttle = visor_throttle,
.unthrottle = visor_unthrottle,
.attach = clie_5_attach,
.probe = visor_probe,
.calc_num_ports = visor_calc_num_ports,
.shutdown = visor_shutdown,
.ioctl = visor_ioctl,
.set_termios = visor_set_termios,
.write = visor_write,
.write_room = visor_write_room,
.chars_in_buffer = visor_chars_in_buffer,
.write_bulk_callback = visor_write_bulk_callback,
.read_bulk_callback = visor_read_bulk_callback,
.read_int_callback = visor_read_int_callback,
};
/* device info for the Sony Clie OS version 3.5 */
static struct usb_serial_device_type clie_3_5_device = {
.owner = THIS_MODULE,
.name = "Sony Clie 3.5",
.short_name = "clie_3.5",
.id_table = clie_id_3_5_table,
.num_interrupt_in = 0,
.num_bulk_in = 1,
.num_bulk_out = 1,
.num_ports = 1,
.open = visor_open,
.close = visor_close,
.throttle = visor_throttle,
.unthrottle = visor_unthrottle,
.attach = clie_3_5_startup,
.ioctl = visor_ioctl,
.set_termios = visor_set_termios,
.write = visor_write,
.write_room = visor_write_room,
.chars_in_buffer = visor_chars_in_buffer,
.write_bulk_callback = visor_write_bulk_callback,
.read_bulk_callback = visor_read_bulk_callback,
};
struct visor_private {
spinlock_t lock;
int bytes_in;
int bytes_out;
int outstanding_urbs;
int throttled;
};
/* number of outstanding urbs to prevent userspace DoS from happening */
#define URB_UPPER_LIMIT 42
static int stats;
/******************************************************************************
* Handspring Visor specific driver functions
******************************************************************************/
static int visor_open (struct usb_serial_port *port, struct file *filp)
{
struct usb_serial *serial = port->serial;
struct visor_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
int result = 0;
dbg("%s - port %d", __FUNCTION__, port->number);
if (!port->read_urb) {
/* this is needed for some brain dead Sony devices */
dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
return -ENODEV;
}
spin_lock_irqsave(&priv->lock, flags);
priv->bytes_in = 0;
priv->bytes_out = 0;
priv->outstanding_urbs = 0;
priv->throttled = 0;
spin_unlock_irqrestore(&priv->lock, flags);
/*
* 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;
/* 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,
visor_read_bulk_callback, port);
result = usb_submit_urb(port->read_urb, GFP_KERNEL);
if (result) {
dev_err(&port->dev, "%s - failed submitting read urb, error %d\n",
__FUNCTION__, result);
goto exit;
}
if (port->interrupt_in_urb) {
dbg("%s - adding interrupt input for treo", __FUNCTION__);
result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
if (result)
dev_err(&port->dev, "%s - failed submitting interrupt urb, error %d\n",
__FUNCTION__, result);
}
exit:
return result;
}
static void visor_close (struct usb_serial_port *port, struct file * filp)
{
struct visor_private *priv = usb_get_serial_port_data(port);
unsigned char *transfer_buffer;
dbg("%s - port %d", __FUNCTION__, port->number);
/* shutdown our urbs */
usb_kill_urb(port->read_urb);
if (port->interrupt_in_urb)
usb_kill_urb(port->interrupt_in_urb);
/* Try to send shutdown message, if the device is gone, this will just fail. */
transfer_buffer = kmalloc (0x12, GFP_KERNEL);
if (transfer_buffer) {
usb_control_msg (port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0),
VISOR_CLOSE_NOTIFICATION, 0xc2,
0x0000, 0x0000,
transfer_buffer, 0x12, 300);
kfree (transfer_buffer);
}
if (stats)
dev_info(&port->dev, "Bytes In = %d Bytes Out = %d\n",
priv->bytes_in, priv->bytes_out);
}
static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count)
{
struct visor_private *priv = usb_get_serial_port_data(port);
struct usb_serial *serial = port->serial;
struct urb *urb;
unsigned char *buffer;
unsigned long flags;
int status;
dbg("%s - port %d", __FUNCTION__, port->number);
spin_lock_irqsave(&priv->lock, flags);
if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
spin_unlock_irqrestore(&priv->lock, flags);
dbg("%s - write limit hit\n", __FUNCTION__);
return 0;
}
spin_unlock_irqrestore(&priv->lock, flags);
buffer = kmalloc (count, GFP_ATOMIC);
if (!buffer) {
dev_err(&port->dev, "out of memory\n");
return -ENOMEM;
}
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb) {
dev_err(&port->dev, "no more free urbs\n");
kfree (buffer);
return -ENOMEM;
}
memcpy (buffer, buf, count);
usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
usb_fill_bulk_urb (urb, serial->dev,
usb_sndbulkpipe (serial->dev,
port->bulk_out_endpointAddress),
buffer, count,
visor_write_bulk_callback, port);
/* send it down the pipe */
status = usb_submit_urb(urb, GFP_ATOMIC);
if (status) {
dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n",
__FUNCTION__, status);
count = status;
kfree (buffer);
} else {
spin_lock_irqsave(&priv->lock, flags);
++priv->outstanding_urbs;
priv->bytes_out += count;
spin_unlock_irqrestore(&priv->lock, flags);
}
/* we are done with this urb, so let the host driver
* really free it when it is finished with it */
usb_free_urb (urb);
return count;
}
static int visor_write_room (struct usb_serial_port *port)
{
dbg("%s - port %d", __FUNCTION__, port->number);
/*
* We really can take anything the user throws at us
* but let's pick a nice big number to tell the tty
* layer that we have lots of free space
*/
return 2048;
}
static int visor_chars_in_buffer (struct usb_serial_port *port)
{
dbg("%s - port %d", __FUNCTION__, port->number);
/*
* We can't really account for how much data we
* have sent out, but hasn't made it through to the
* device, so just tell the tty layer that everything
* is flushed.
*/
return 0;
}
static void visor_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
{
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
struct visor_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
/* free up the transfer buffer, as usb_free_urb() does not do this */
kfree (urb->transfer_buffer);
dbg("%s - port %d", __FUNCTION__, port->number);
if (urb->status)
dbg("%s - nonzero write bulk status received: %d",
__FUNCTION__, urb->status);
spin_lock_irqsave(&priv->lock, flags);
--priv->outstanding_urbs;
spin_unlock_irqrestore(&priv->lock, flags);
schedule_work(&port->work);
}
static void visor_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
{
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
struct visor_private *priv = usb_get_serial_port_data(port);
unsigned char *data = urb->transfer_buffer;
struct tty_struct *tty;
unsigned long flags;
int i;
int throttled;
int result;
dbg("%s - port %d", __FUNCTION__, port->number);
if (urb->status) {
dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
return;
}
usb_serial_debug_data(debug, &port->dev, __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);
}
spin_lock_irqsave(&priv->lock, flags);
priv->bytes_in += urb->actual_length;
throttled = priv->throttled;
spin_unlock_irqrestore(&priv->lock, flags);
/* Continue trying to always read if we should */
if (!throttled) {
usb_fill_bulk_urb (port->read_urb, port->serial->dev,
usb_rcvbulkpipe(port->serial->dev,
port->bulk_in_endpointAddress),
port->read_urb->transfer_buffer,
port->read_urb->transfer_buffer_length,
visor_read_bulk_callback, port);
result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
if (result)
dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
}
return;
}
static void visor_read_int_callback (struct urb *urb, struct pt_regs *regs)
{
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
int result;
switch (urb->status) {
case 0:
/* success */
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dbg("%s - urb shutting down with status: %d",
__FUNCTION__, urb->status);
return;
default:
dbg("%s - nonzero urb status received: %d",
__FUNCTION__, urb->status);
goto exit;
}
/*
* This information is still unknown what it can be used for.
* If anyone has an idea, please let the author know...
*
* Rumor has it this endpoint is used to notify when data
* is ready to be read from the bulk ones.
*/
usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
urb->actual_length, urb->transfer_buffer);
exit:
result = usb_submit_urb (urb, GFP_ATOMIC);
if (result)
dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n",
__FUNCTION__, result);
}
static void visor_throttle (struct usb_serial_port *port)
{
struct visor_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
dbg("%s - port %d", __FUNCTION__, port->number);
spin_lock_irqsave(&priv->lock, flags);
priv->throttled = 1;
spin_unlock_irqrestore(&priv->lock, flags);
}
static void visor_unthrottle (struct usb_serial_port *port)
{
struct visor_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
int result;
dbg("%s - port %d", __FUNCTION__, port->number);
spin_lock_irqsave(&priv->lock, flags);
priv->throttled = 0;
spin_unlock_irqrestore(&priv->lock, flags);
port->read_urb->dev = port->serial->dev;
result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
if (result)
dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result);
}
static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id)
{
struct device *dev = &serial->dev->dev;
struct visor_connection_info *connection_info;
unsigned char *transfer_buffer;
char *string;
int retval = 0;
int i;
int num_ports = 0;
dbg("%s", __FUNCTION__);
transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
if (!transfer_buffer) {
dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
sizeof(*connection_info));
return -ENOMEM;
}
/* send a get connection info request */
retval = usb_control_msg (serial->dev,
usb_rcvctrlpipe(serial->dev, 0),
VISOR_GET_CONNECTION_INFORMATION,
0xc2, 0x0000, 0x0000, transfer_buffer,
sizeof(*connection_info), 300);
if (retval < 0) {
dev_err(dev, "%s - error %d getting connection information\n",
__FUNCTION__, retval);
goto exit;
}
if (retval == sizeof(*connection_info)) {
connection_info = (struct visor_connection_info *)transfer_buffer;
num_ports = le16_to_cpu(connection_info->num_ports);
for (i = 0; i < 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;
}
dev_info(dev, "%s: port %d, is for %s use\n",
serial->type->name,
connection_info->connections[i].port, string);
}
}
/*
* Handle devices that report invalid stuff here.
*/
if (num_ports == 0 || num_ports > 2) {
dev_warn (dev, "%s: No valid connect info available\n",
serial->type->name);
num_ports = 2;
}
dev_info(dev, "%s: Number of ports: %d\n", serial->type->name,
num_ports);
/*
* save off our num_ports info so that we can use it in the
* calc_num_ports callback
*/
usb_set_serial_data(serial, (void *)(long)num_ports);
/* ask for the number of bytes available, but ignore the response as it is broken */
retval = usb_control_msg (serial->dev,
usb_rcvctrlpipe(serial->dev, 0),
VISOR_REQUEST_BYTES_AVAILABLE,
0xc2, 0x0000, 0x0005, transfer_buffer,
0x02, 300);
if (retval < 0)
dev_err(dev, "%s - error %d getting bytes available request\n",
__FUNCTION__, retval);
retval = 0;
exit:
kfree (transfer_buffer);
return retval;
}
static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id)
{
struct device *dev = &serial->dev->dev;
struct palm_ext_connection_info *connection_info;
unsigned char *transfer_buffer;
int retval;
dbg("%s", __FUNCTION__);
transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
if (!transfer_buffer) {
dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
sizeof(*connection_info));
return -ENOMEM;
}
retval = usb_control_msg (serial->dev,
usb_rcvctrlpipe(serial->dev, 0),
PALM_GET_EXT_CONNECTION_INFORMATION,
0xc2, 0x0000, 0x0000, transfer_buffer,
sizeof (*connection_info), 300);
if (retval < 0)
dev_err(dev, "%s - error %d getting connection info\n",
__FUNCTION__, retval);
else
usb_serial_debug_data(debug, &serial->dev->dev, __FUNCTION__,
retval, transfer_buffer);
kfree (transfer_buffer);
return 0;
}
static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id)
{
int retval = 0;
int (*startup) (struct usb_serial *serial, const struct usb_device_id *id);
dbg("%s", __FUNCTION__);
if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
err("active config #%d != 1 ??",
serial->dev->actconfig->desc.bConfigurationValue);
return -ENODEV;
}
if (id->driver_info) {
startup = (void *)id->driver_info;
retval = startup(serial, id);
}
return retval;
}
static int visor_calc_num_ports (struct usb_serial *serial)
{
int num_ports = (int)(long)(usb_get_serial_data(serial));
if (num_ports)
usb_set_serial_data(serial, NULL);
return num_ports;
}
static int generic_startup(struct usb_serial *serial)
{
struct visor_private *priv;
int i;
for (i = 0; i < serial->num_ports; ++i) {
priv = kmalloc (sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
memset (priv, 0x00, sizeof(*priv));
spin_lock_init(&priv->lock);
usb_set_serial_port_data(serial->port[i], priv);
}
return 0;
}
static int clie_3_5_startup (struct usb_serial *serial)
{
struct device *dev = &serial->dev->dev;
int result;
u8 data;
dbg("%s", __FUNCTION__);
/*
* Note that PEG-300 series devices expect the following two calls.
*/
/* get the config number */
result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
0, 0, &data, 1, 3000);
if (result < 0) {
dev_err(dev, "%s: get config number failed: %d\n", __FUNCTION__, result);
return result;
}
if (result != 1) {
dev_err(dev, "%s: get config number bad return length: %d\n", __FUNCTION__, result);
return -EIO;
}
/* get the interface number */
result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
USB_REQ_GET_INTERFACE,
USB_DIR_IN | USB_RECIP_INTERFACE,
0, 0, &data, 1, 3000);
if (result < 0) {
dev_err(dev, "%s: get interface number failed: %d\n", __FUNCTION__, result);
return result;
}
if (result != 1) {
dev_err(dev, "%s: get interface number bad return length: %d\n", __FUNCTION__, result);
return -EIO;
}
return generic_startup(serial);
}
static int treo_attach (struct usb_serial *serial)
{
struct usb_serial_port *swap_port;
/* Only do this endpoint hack for the Handspring devices with
* interrupt in endpoints, which for now are the Treo devices. */
if (!((le16_to_cpu(serial->dev->descriptor.idVendor) == HANDSPRING_VENDOR_ID) ||
(le16_to_cpu(serial->dev->descriptor.idVendor) == KYOCERA_VENDOR_ID)) ||
(serial->num_interrupt_in == 0))
goto generic_startup;
dbg("%s", __FUNCTION__);
/*
* It appears that Treos and Kyoceras want to use the
* 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
* so let's swap the 1st and 2nd bulk in and interrupt endpoints.
* Note that swapping the bulk out endpoints would break lots of
* apps that want to communicate on the second port.
*/
#define COPY_PORT(dest, src) \
dest->read_urb = src->read_urb; \
dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress; \
dest->bulk_in_buffer = src->bulk_in_buffer; \
dest->interrupt_in_urb = src->interrupt_in_urb; \
dest->interrupt_in_endpointAddress = src->interrupt_in_endpointAddress; \
dest->interrupt_in_buffer = src->interrupt_in_buffer;
swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
if (!swap_port)
return -ENOMEM;
COPY_PORT(swap_port, serial->port[0]);
COPY_PORT(serial->port[0], serial->port[1]);
COPY_PORT(serial->port[1], swap_port);
kfree(swap_port);
generic_startup:
return generic_startup(serial);
}
static int clie_5_attach (struct usb_serial *serial)
{
dbg("%s", __FUNCTION__);
/* TH55 registers 2 ports.
Communication in from the UX50/TH55 uses bulk_in_endpointAddress from port 0
Communication out to the UX50/TH55 uses bulk_out_endpointAddress from port 1
Lets do a quick and dirty mapping
*/
/* some sanity check */
if (serial->num_ports < 2)
return -1;
/* port 0 now uses the modified endpoint Address */
serial->port[0]->bulk_out_endpointAddress = serial->port[1]->bulk_out_endpointAddress;
return generic_startup(serial);
}
static void visor_shutdown (struct usb_serial *serial)
{
dbg("%s", __FUNCTION__);
}
static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
{
dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
return -ENOIOCTLCMD;
}
/* This function is all nice and good, but we don't change anything based on it :) */
static void visor_set_termios (struct usb_serial_port *port, struct termios *old_termios)
{
unsigned int cflag;
dbg("%s - port %d", __FUNCTION__, port->number);
if ((!port->tty) || (!port->tty->termios)) {
dbg("%s - no tty structures", __FUNCTION__);
return;
}
cflag = port->tty->termios->c_cflag;
/* check that they really want us to change something */
if (old_termios) {
if ((cflag == old_termios->c_cflag) &&
(RELEVANT_IFLAG(port->tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
dbg("%s - nothing to change...", __FUNCTION__);
return;
}
}
/* get the byte size */
switch (cflag & CSIZE) {
case CS5: dbg("%s - data bits = 5", __FUNCTION__); break;
case CS6: dbg("%s - data bits = 6", __FUNCTION__); break;
case CS7: dbg("%s - data bits = 7", __FUNCTION__); break;
default:
case CS8: dbg("%s - data bits = 8", __FUNCTION__); break;
}
/* determine the parity */
if (cflag & PARENB)
if (cflag & PARODD)
dbg("%s - parity = odd", __FUNCTION__);
else
dbg("%s - parity = even", __FUNCTION__);
else
dbg("%s - parity = none", __FUNCTION__);
/* figure out the stop bits requested */
if (cflag & CSTOPB)
dbg("%s - stop bits = 2", __FUNCTION__);
else
dbg("%s - stop bits = 1", __FUNCTION__);
/* figure out the flow control settings */
if (cflag & CRTSCTS)
dbg("%s - RTS/CTS is enabled", __FUNCTION__);
else
dbg("%s - RTS/CTS is disabled", __FUNCTION__);
/* determine software flow control */
if (I_IXOFF(port->tty))
dbg("%s - XON/XOFF is enabled, XON = %2x, XOFF = %2x",
__FUNCTION__, START_CHAR(port->tty), STOP_CHAR(port->tty));
else
dbg("%s - XON/XOFF is disabled", __FUNCTION__);
/* get the baud rate wanted */
dbg("%s - baud rate = %d", __FUNCTION__, tty_get_baud_rate(port->tty));
return;
}
static int __init visor_init (void)
{
int i, retval;
/* Only if parameters were passed to us */
if ((vendor>0) && (product>0)) {
struct usb_device_id usb_dev_temp[]=
{{USB_DEVICE(vendor, product),
.driver_info = (kernel_ulong_t)&palm_os_4_probe }};
/* Find the last entry in id_table */
for (i=0; ; i++) {
if (id_table[i].idVendor==0) {
id_table[i] = usb_dev_temp[0];
break;
}
}
/* Find the last entry in id_table_combined */
for (i=0; ; i++) {
if (id_table_combined[i].idVendor==0) {
id_table_combined[i] = usb_dev_temp[0];
break;
}
}
info("Untested USB device specified at time of module insertion");
info("Warning: This is not guaranteed to work");
info("Using a newer kernel is preferred to this method");
info("Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x",
vendor, product);
}
retval = usb_serial_register(&handspring_device);
if (retval)
goto failed_handspring_register;
retval = usb_serial_register(&clie_3_5_device);
if (retval)
goto failed_clie_3_5_register;
retval = usb_serial_register(&clie_5_device);
if (retval)
goto failed_clie_5_register;
retval = usb_register(&visor_driver);
if (retval)
goto failed_usb_register;
info(DRIVER_DESC " " DRIVER_VERSION);
return 0;
failed_usb_register:
usb_serial_deregister(&clie_5_device);
failed_clie_5_register:
usb_serial_deregister(&clie_3_5_device);
failed_clie_3_5_register:
usb_serial_deregister(&handspring_device);
failed_handspring_register:
return retval;
}
static void __exit visor_exit (void)
{
usb_deregister (&visor_driver);
usb_serial_deregister (&handspring_device);
usb_serial_deregister (&clie_3_5_device);
usb_serial_deregister (&clie_5_device);
}
module_init(visor_init);
module_exit(visor_exit);
MODULE_AUTHOR( DRIVER_AUTHOR );
MODULE_DESCRIPTION( DRIVER_DESC );
MODULE_LICENSE("GPL");
module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
module_param(stats, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(stats, "Enables statistics or not");
module_param(vendor, ushort, 0);
MODULE_PARM_DESC(vendor, "User specified vendor ID");
module_param(product, ushort, 0);
MODULE_PARM_DESC(product, "User specified product ID");
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