# This is a BitKeeper generated patch for the following project: # Project Name: Linux kernel tree # This patch format is intended for GNU patch command version 2.5 or higher. # This patch includes the following deltas: # ChangeSet 1.594 -> 1.595 # drivers/usb/class/bluetooth.c 1.19 -> 1.21 drivers/usb/class/bluetty.c (moved) # drivers/usb/class/Config.in 1.4 -> 1.5 # drivers/usb/class/Config.help 1.2 -> 1.3 # drivers/usb/class/Makefile 1.3 -> 1.4 # # The following is the BitKeeper ChangeSet Log # -------------------------------------------- # 02/04/08 [EMAIL PROTECTED] 1.595 # USB bluetooth tty driver # # renamed the bluetooth.c file to bluettty.c to help prevent user confusion # between this driver and the bluez bluetooth stack in the kernel. # -------------------------------------------- # diff -Nru a/drivers/usb/class/Config.help b/drivers/usb/class/Config.help --- a/drivers/usb/class/Config.help Mon Apr 8 15:49:12 2002 +++ b/drivers/usb/class/Config.help Mon Apr 8 15:49:12 2002 @@ -17,15 +17,21 @@ The module will be called audio.o. If you want to compile it as a module, say M here and read <file:Documentation/modules.txt>. -CONFIG_USB_BLUETOOTH +CONFIG_USB_BLUETOOTH_TTY Say Y here if you want to connect a USB Bluetooth device to your computer's USB port. You will need the Bluetooth stack (available at <http://developer.axis.com/software/index.shtml>) to fully use the device. + This driver implements a tty inteface to a Bluetooth device. If + you want to use a socket based Bluetooth stack (like the BlueZ + stack), do not use this driver. + + If in doubt, say N here. + This code is also available as a module ( = code which can be inserted in and removed from the running kernel whenever you want). - The module will be called bluetooth.o. If you want to compile it as + The module will be called bluetty.o. If you want to compile it as a module, say M here and read <file:Documentation/modules.txt>. CONFIG_USB_PRINTER diff -Nru a/drivers/usb/class/Config.in b/drivers/usb/class/Config.in --- a/drivers/usb/class/Config.in Mon Apr 8 15:49:12 2002 +++ b/drivers/usb/class/Config.in Mon Apr 8 15:49:12 2002 @@ -3,14 +3,14 @@ # comment 'USB Device Class drivers' dep_tristate ' USB Audio support' CONFIG_USB_AUDIO $CONFIG_USB $CONFIG_SOUND -dep_tristate ' USB Bluetooth support (EXPERIMENTAL)' CONFIG_USB_BLUETOOTH $CONFIG_USB $CONFIG_EXPERIMENTAL +dep_tristate ' USB Bluetooth TTY support' CONFIG_USB_BLUETOOTH_TTY $CONFIG_USB dep_tristate ' USB Modem (CDC ACM) support' CONFIG_USB_ACM $CONFIG_USB dep_tristate ' USB Printer support' CONFIG_USB_PRINTER $CONFIG_USB # Turn on CONFIG_USB_CLASS if any of the drivers are compiled into the kernel # to make our Makefile logic a bit simpler. -if [ "$CONFIG_USB_AUDIO" = "y" -o "$CONFIG_USB_BLUETOOTH" = "y" ]; then +if [ "$CONFIG_USB_AUDIO" = "y" -o "$CONFIG_USB_BLUETOOTH_TTY" = "y" ]; then define_bool CONFIG_USB_CLASS y fi if [ "$CONFIG_USB_ACM" = "y" -o "$CONFIG_USB_PRINTER" = "y" ]; then diff -Nru a/drivers/usb/class/Makefile b/drivers/usb/class/Makefile --- a/drivers/usb/class/Makefile Mon Apr 8 15:49:12 2002 +++ b/drivers/usb/class/Makefile Mon Apr 8 15:49:12 2002 @@ -7,7 +7,7 @@ obj-$(CONFIG_USB_ACM) += cdc-acm.o obj-$(CONFIG_USB_AUDIO) += audio.o -obj-$(CONFIG_USB_BLUETOOTH) += bluetooth.o +obj-$(CONFIG_USB_BLUETOOTH_TTY) += bluetty.o obj-$(CONFIG_USB_PRINTER) += printer.o diff -Nru a/drivers/usb/class/bluetooth.c b/drivers/usb/class/bluetooth.c --- a/drivers/usb/class/bluetooth.c Mon Apr 8 15:49:12 2002 +++ /dev/null Wed Dec 31 16:00:00 1969 @@ -1,1364 +0,0 @@ -/* - * bluetooth.c Version 0.13 - * - * Copyright (c) 2000, 2001 Greg Kroah-Hartman <[EMAIL PROTECTED]> - * Copyright (c) 2000 Mark Douglas Corner <[EMAIL PROTECTED]> - * - * USB Bluetooth driver, based on the Bluetooth Spec version 1.0B - * - * (2001/11/30) Version 0.13 gkh - * - added locking patch from Masoodur Rahman <[EMAIL PROTECTED]> - * - removed active variable, as open_count will do. - * - * (2001/07/09) Version 0.12 gkh - * - removed in_interrupt() call, as it doesn't make sense to do - * that anymore. - * - * (2001/06/05) Version 0.11 gkh - * - Fixed problem with read urb status saying that we have shutdown, - * and that we shouldn't resubmit the urb. Patch from unknown. - * - * (2001/05/28) Version 0.10 gkh - * - Fixed problem with using data from userspace in the bluetooth_write - * function as found by the CHECKER project. - * - Added a buffer to the write_urb_pool which reduces the number of - * buffers being created and destroyed for ever write. Also cleans - * up the logic a bit. - * - Added a buffer to the control_urb_pool which fixes a memory leak - * when the device is removed from the system. - * - * (2001/05/28) Version 0.9 gkh - * Fixed problem with bluetooth==NULL for bluetooth_read_bulk_callback - * which was found by both the CHECKER project and Mikko Rahkonen. - * - * (08/04/2001) gb - * Identify version on module load. - * - * (2001/03/10) Version 0.8 gkh - * Fixed problem with not unlinking interrupt urb on device close - * and resubmitting the read urb on error with bluetooth struct. - * Thanks to Narayan Mohanram <[EMAIL PROTECTED]> for the - * fixes. - * - * (11/29/2000) Version 0.7 gkh - * Fixed problem with overrunning the tty flip buffer. - * Removed unneeded NULL pointer initialization. - * - * (10/05/2000) Version 0.6 gkh - * Fixed bug with urb->dev not being set properly, now that the usb - * core needs it. - * Got a real major id number and name. - * - * (08/06/2000) Version 0.5 gkh - * Fixed problem of not resubmitting the bulk read urb if there is - * an error in the callback. Ericsson devices seem to need this. - * - * (07/11/2000) Version 0.4 gkh - * Fixed bug in disconnect for when we call tty_hangup - * Fixed bug in bluetooth_ctrl_msg where the bluetooth struct was not - * getting attached to the control urb properly. - * Fixed bug in bluetooth_write where we pay attention to the result - * of bluetooth_ctrl_msg. - * - * (08/03/2000) Version 0.3 gkh mdc - * Merged in Mark's changes to make the driver play nice with the Axis - * stack. - * Made the write bulk use an urb pool to enable larger transfers with - * fewer calls to the driver. - * Fixed off by one bug in acl pkt receive - * Made packet counters specific to each bluetooth device - * Added checks for zero length callbacks - * Added buffers for int and bulk packets. Had to do this otherwise - * packet types could intermingle. - * Made a control urb pool for the control messages. - * - * (07/11/2000) Version 0.2 gkh - * Fixed a small bug found by Nils Faerber in the usb_bluetooth_probe - * function. - * - * (07/09/2000) Version 0.1 gkh - * Initial release. Has support for sending ACL data (which is really just - * a HCI frame.) Raw HCI commands and HCI events are not supported. - * A ioctl will probably be needed for the HCI commands and events in the - * future. All isoch endpoints are ignored at this time also. - * This driver should work for all currently shipping USB Bluetooth - * devices at this time :) - * - */ - -/* - * 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 program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - - -#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/slab.h> -#include <linux/fcntl.h> -#include <linux/tty.h> -#include <linux/tty_driver.h> -#include <linux/tty_flip.h> -#include <linux/module.h> - -#define DEBUG -#include <linux/usb.h> - -/* - * Version Information - */ -#define DRIVER_VERSION "v0.13" -#define DRIVER_AUTHOR "Greg Kroah-Hartman, Mark Douglas Corner" -#define DRIVER_DESC "USB Bluetooth tty driver" - -/* define this if you have hardware that is not good */ -/*#define BTBUGGYHARDWARE */ - -/* Class, SubClass, and Protocol codes that describe a Bluetooth device */ -#define WIRELESS_CLASS_CODE 0xe0 -#define RF_SUBCLASS_CODE 0x01 -#define BLUETOOTH_PROGRAMMING_PROTOCOL_CODE 0x01 - - -#define BLUETOOTH_TTY_MAJOR 216 /* real device node major id */ -#define BLUETOOTH_TTY_MINORS 256 /* whole lotta bluetooth devices */ - -#define USB_BLUETOOTH_MAGIC 0x6d02 /* magic number for bluetooth struct */ - -#define BLUETOOTH_CONTROL_REQUEST_TYPE 0x20 - -/* Bluetooth packet types */ -#define CMD_PKT 0x01 -#define ACL_PKT 0x02 -#define SCO_PKT 0x03 -#define EVENT_PKT 0x04 -#define ERROR_PKT 0x05 -#define NEG_PKT 0x06 - -/* Message sizes */ -#define MAX_EVENT_SIZE 0xFF -#define EVENT_HDR_SIZE 3 /* 2 for the header + 1 for the type indicator */ -#define EVENT_BUFFER_SIZE (MAX_EVENT_SIZE + EVENT_HDR_SIZE) - -#define MAX_ACL_SIZE 0xFFFF -#define ACL_HDR_SIZE 5 /* 4 for the header + 1 for the type indicator */ -#define ACL_BUFFER_SIZE (MAX_ACL_SIZE + ACL_HDR_SIZE) - -/* parity check flag */ -#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK)) - -#define CHAR2INT16(c1,c0) (((u32)((c1) & 0xff) << 8) + (u32)((c0) & 0xff)) - -#define NUM_BULK_URBS 24 -#define NUM_CONTROL_URBS 16 - -struct usb_bluetooth { - int magic; - struct usb_device * dev; - struct tty_driver * tty_driver; /* the tty_driver for this device */ - struct tty_struct * tty; /* the coresponding tty for this port */ - - unsigned char minor; /* the starting minor number for this device */ - int throttle; /* throttled by tty layer */ - int open_count; - - __u8 control_out_bInterfaceNum; - struct urb * control_urb_pool[NUM_CONTROL_URBS]; - struct usb_ctrlrequest dr[NUM_CONTROL_URBS]; - - unsigned char * interrupt_in_buffer; - struct urb * interrupt_in_urb; - __u8 interrupt_in_endpointAddress; - __u8 interrupt_in_interval; - int interrupt_in_buffer_size; - - unsigned char * bulk_in_buffer; - struct urb * read_urb; - __u8 bulk_in_endpointAddress; - int bulk_in_buffer_size; - - int bulk_out_buffer_size; - struct urb * write_urb_pool[NUM_BULK_URBS]; - __u8 bulk_out_endpointAddress; - - wait_queue_head_t write_wait; - - struct tq_struct tqueue; /* task queue for line discipline waking up */ - - unsigned int int_packet_pos; - unsigned char int_buffer[EVENT_BUFFER_SIZE]; - unsigned int bulk_packet_pos; - unsigned char bulk_buffer[ACL_BUFFER_SIZE]; /* 64k preallocated, fix? */ - struct semaphore lock; -}; - - -/* local function prototypes */ -static int bluetooth_open (struct tty_struct *tty, struct file *filp); -static void bluetooth_close (struct tty_struct *tty, struct file *filp); -static int bluetooth_write (struct tty_struct *tty, int from_user, const unsigned char *buf, int count); -static int bluetooth_write_room (struct tty_struct *tty); -static int bluetooth_chars_in_buffer (struct tty_struct *tty); -static void bluetooth_throttle (struct tty_struct *tty); -static void bluetooth_unthrottle (struct tty_struct *tty); -static int bluetooth_ioctl (struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); -static void bluetooth_set_termios (struct tty_struct *tty, struct termios *old); - -static void bluetooth_int_callback (struct urb *urb); -static void bluetooth_ctrl_callback (struct urb *urb); -static void bluetooth_read_bulk_callback (struct urb *urb); -static void bluetooth_write_bulk_callback (struct urb *urb); - -static void * usb_bluetooth_probe(struct usb_device *dev, unsigned int ifnum, - const struct usb_device_id *id); -static void usb_bluetooth_disconnect (struct usb_device *dev, void *ptr); - - -static struct usb_device_id usb_bluetooth_ids [] = { - { USB_DEVICE_INFO(WIRELESS_CLASS_CODE, RF_SUBCLASS_CODE, BLUETOOTH_PROGRAMMING_PROTOCOL_CODE) }, - { } /* Terminating entry */ -}; - -MODULE_DEVICE_TABLE (usb, usb_bluetooth_ids); - -static struct usb_driver usb_bluetooth_driver = { - name: "bluetooth", - probe: usb_bluetooth_probe, - disconnect: usb_bluetooth_disconnect, - id_table: usb_bluetooth_ids, -}; - -static int bluetooth_refcount; -static struct tty_driver bluetooth_tty_driver; -static struct tty_struct * bluetooth_tty[BLUETOOTH_TTY_MINORS]; -static struct termios * bluetooth_termios[BLUETOOTH_TTY_MINORS]; -static struct termios * bluetooth_termios_locked[BLUETOOTH_TTY_MINORS]; -static struct usb_bluetooth *bluetooth_table[BLUETOOTH_TTY_MINORS]; - - -static inline int bluetooth_paranoia_check (struct usb_bluetooth *bluetooth, const char *function) -{ - if (!bluetooth) { - dbg("%s - bluetooth == NULL", function); - return -1; - } - if (bluetooth->magic != USB_BLUETOOTH_MAGIC) { - dbg("%s - bad magic number for bluetooth", function); - return -1; - } - - return 0; -} - - -static inline struct usb_bluetooth* get_usb_bluetooth (struct usb_bluetooth *bluetooth, const char *function) -{ - if (!bluetooth || - bluetooth_paranoia_check (bluetooth, function)) { - /* then say that we dont have a valid usb_bluetooth thing, which will - * end up generating -ENODEV return values */ - return NULL; - } - - return bluetooth; -} - - -static inline struct usb_bluetooth *get_bluetooth_by_minor (int minor) -{ - return bluetooth_table[minor]; -} - - -static int bluetooth_ctrl_msg (struct usb_bluetooth *bluetooth, int request, int value, const unsigned char *buf, int len) -{ - struct urb *urb = NULL; - struct usb_ctrlrequest *dr = NULL; - int i; - int status; - - dbg (__FUNCTION__); - - /* try to find a free urb in our list */ - for (i = 0; i < NUM_CONTROL_URBS; ++i) { - if (bluetooth->control_urb_pool[i]->status != -EINPROGRESS) { - urb = bluetooth->control_urb_pool[i]; - dr = &bluetooth->dr[i]; - break; - } - } - if (urb == NULL) { - dbg (__FUNCTION__ " - no free urbs"); - return -ENOMEM; - } - - /* keep increasing the urb transfer buffer to fit the size of the message */ - if (urb->transfer_buffer == NULL) { - urb->transfer_buffer = kmalloc (len, GFP_KERNEL); - if (urb->transfer_buffer == NULL) { - err (__FUNCTION__" - out of memory"); - return -ENOMEM; - } - } - if (urb->transfer_buffer_length < len) { - kfree (urb->transfer_buffer); - urb->transfer_buffer = kmalloc (len, GFP_KERNEL); - if (urb->transfer_buffer == NULL) { - err (__FUNCTION__" - out of memory"); - return -ENOMEM; - } - } - memcpy (urb->transfer_buffer, buf, len); - - dr->bRequestType= BLUETOOTH_CONTROL_REQUEST_TYPE; - dr->bRequest = request; - dr->wValue = cpu_to_le16((u16) value); - dr->wIndex = cpu_to_le16((u16) bluetooth->control_out_bInterfaceNum); - dr->wLength = cpu_to_le16((u16) len); - - FILL_CONTROL_URB (urb, bluetooth->dev, usb_sndctrlpipe(bluetooth->dev, 0), - (unsigned char*)dr, urb->transfer_buffer, len, bluetooth_ctrl_callback, bluetooth); - - /* send it down the pipe */ - status = usb_submit_urb(urb, GFP_KERNEL); - if (status) - dbg(__FUNCTION__ " - usb_submit_urb(control) failed with status = %d", status); - - return status; -} - - - - - -/***************************************************************************** - * Driver tty interface functions - *****************************************************************************/ -static int bluetooth_open (struct tty_struct *tty, struct file * filp) -{ - struct usb_bluetooth *bluetooth; - int result; - - dbg(__FUNCTION__); - - /* initialize the pointer incase something fails */ - tty->driver_data = NULL; - - /* get the bluetooth object associated with this tty pointer */ - bluetooth = get_bluetooth_by_minor (minor(tty->device)); - - if (bluetooth_paranoia_check (bluetooth, __FUNCTION__)) { - return -ENODEV; - } - - down (&bluetooth->lock); - - ++bluetooth->open_count; - if (bluetooth->open_count == 1) { - /* set up our structure making the tty driver remember our object, and us it */ - tty->driver_data = bluetooth; - bluetooth->tty = tty; - - /* 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. */ - bluetooth->tty->low_latency = 1; - - /* Reset the packet position counters */ - bluetooth->int_packet_pos = 0; - bluetooth->bulk_packet_pos = 0; - -#ifndef BTBUGGYHARDWARE - /* Start reading from the device */ - FILL_BULK_URB (bluetooth->read_urb, bluetooth->dev, - usb_rcvbulkpipe(bluetooth->dev, bluetooth->bulk_in_endpointAddress), - bluetooth->bulk_in_buffer, - bluetooth->bulk_in_buffer_size, - bluetooth_read_bulk_callback, bluetooth); - result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL); - if (result) - dbg(__FUNCTION__ " - usb_submit_urb(read bulk) failed with status %d", result); -#endif - FILL_INT_URB (bluetooth->interrupt_in_urb, bluetooth->dev, - usb_rcvintpipe(bluetooth->dev, bluetooth->interrupt_in_endpointAddress), - bluetooth->interrupt_in_buffer, - bluetooth->interrupt_in_buffer_size, - bluetooth_int_callback, bluetooth, - bluetooth->interrupt_in_interval); - result = usb_submit_urb(bluetooth->interrupt_in_urb, GFP_KERNEL); - if (result) - dbg(__FUNCTION__ " - usb_submit_urb(interrupt in) failed with status %d", result); - } - - up(&bluetooth->lock); - - return 0; -} - - -static void bluetooth_close (struct tty_struct *tty, struct file * filp) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__); - int i; - - if (!bluetooth) { - return; - } - - dbg(__FUNCTION__); - - if (!bluetooth->open_count) { - dbg (__FUNCTION__ " - device not opened"); - return; - } - - down (&bluetooth->lock); - - --bluetooth->open_count; - if (bluetooth->open_count <= 0) { - bluetooth->open_count = 0; - - /* shutdown any bulk reads and writes that might be going on */ - for (i = 0; i < NUM_BULK_URBS; ++i) - usb_unlink_urb (bluetooth->write_urb_pool[i]); - usb_unlink_urb (bluetooth->read_urb); - usb_unlink_urb (bluetooth->interrupt_in_urb); - } - up(&bluetooth->lock); -} - - -static int bluetooth_write (struct tty_struct * tty, int from_user, const unsigned char *buf, int count) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__); - struct urb *urb = NULL; - unsigned char *temp_buffer = NULL; - const unsigned char *current_buffer; - const unsigned char *current_position; - int bytes_sent; - int buffer_size; - int i; - int retval = 0; - - if (!bluetooth) { - return -ENODEV; - } - - dbg(__FUNCTION__ " - %d byte(s)", count); - - if (!bluetooth->open_count) { - dbg (__FUNCTION__ " - device not opened"); - return -EINVAL; - } - - if (count == 0) { - dbg(__FUNCTION__ " - write request of 0 bytes"); - return 0; - } - if (count == 1) { - dbg(__FUNCTION__ " - write request only included type %d", buf[0]); - return 1; - } - -#ifdef DEBUG - printk (KERN_DEBUG __FILE__ ": " __FUNCTION__ " - length = %d, data = ", count); - for (i = 0; i < count; ++i) { - printk ("%.2x ", buf[i]); - } - printk ("\n"); -#endif - - if (from_user) { - temp_buffer = kmalloc (count, GFP_KERNEL); - if (temp_buffer == NULL) { - err (__FUNCTION__ "- out of memory."); - retval = -ENOMEM; - goto exit; - } - copy_from_user (temp_buffer, buf, count); - current_buffer = temp_buffer; - } else { - current_buffer = buf; - } - - switch (*current_buffer) { - /* First byte indicates the type of packet */ - case CMD_PKT: - /* dbg(__FUNCTION__ "- Send cmd_pkt len:%d", count);*/ - - retval = bluetooth_ctrl_msg (bluetooth, 0x00, 0x00, ¤t_buffer[1], count-1); - if (retval) { - goto exit; - } - retval = count; - break; - - case ACL_PKT: - current_position = current_buffer; - ++current_position; - --count; - bytes_sent = 0; - - while (count > 0) { - urb = NULL; - - /* try to find a free urb in our list */ - for (i = 0; i < NUM_BULK_URBS; ++i) { - if (bluetooth->write_urb_pool[i]->status != -EINPROGRESS) { - urb = bluetooth->write_urb_pool[i]; - break; - } - } - if (urb == NULL) { - dbg (__FUNCTION__ " - no free urbs"); - retval = bytes_sent; - goto exit; - } - - - buffer_size = min (count, bluetooth->bulk_out_buffer_size); - memcpy (urb->transfer_buffer, current_position, buffer_size); - - /* build up our urb */ - FILL_BULK_URB (urb, bluetooth->dev, usb_sndbulkpipe(bluetooth->dev, bluetooth->bulk_out_endpointAddress), - urb->transfer_buffer, buffer_size, bluetooth_write_bulk_callback, bluetooth); - urb->transfer_flags |= USB_QUEUE_BULK; - - /* send it down the pipe */ - retval = usb_submit_urb(urb, GFP_KERNEL); - if (retval) { - dbg(__FUNCTION__ " - usb_submit_urb(write bulk) failed with error = %d", retval); - goto exit; - } -#ifdef BTBUGGYHARDWARE - /* A workaround for the stalled data bug */ - /* May or may not be needed...*/ - if (count != 0) { - udelay(500); - } -#endif - current_position += buffer_size; - bytes_sent += buffer_size; - count -= buffer_size; - } - - retval = bytes_sent + 1; - break; - - default : - dbg(__FUNCTION__" - unsupported (at this time) write type"); - retval = -EINVAL; - break; - } - -exit: - if (temp_buffer != NULL) - kfree (temp_buffer); - - return retval; -} - - -static int bluetooth_write_room (struct tty_struct *tty) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__); - int room = 0; - int i; - - if (!bluetooth) { - return -ENODEV; - } - - dbg(__FUNCTION__); - - if (!bluetooth->open_count) { - dbg (__FUNCTION__ " - device not open"); - return -EINVAL; - } - - for (i = 0; i < NUM_BULK_URBS; ++i) { - if (bluetooth->write_urb_pool[i]->status != -EINPROGRESS) { - room += bluetooth->bulk_out_buffer_size; - } - } - - dbg(__FUNCTION__ " - returns %d", room); - return room; -} - - -static int bluetooth_chars_in_buffer (struct tty_struct *tty) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__); - int chars = 0; - int i; - - if (!bluetooth) { - return -ENODEV; - } - - if (!bluetooth->open_count) { - dbg (__FUNCTION__ " - device not open"); - return -EINVAL; - } - - for (i = 0; i < NUM_BULK_URBS; ++i) { - if (bluetooth->write_urb_pool[i]->status == -EINPROGRESS) { - chars += bluetooth->write_urb_pool[i]->transfer_buffer_length; - } - } - - dbg (__FUNCTION__ " - returns %d", chars); - return chars; -} - - -static void bluetooth_throttle (struct tty_struct * tty) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__); - - if (!bluetooth) { - return; - } - - dbg(__FUNCTION__); - - if (!bluetooth->open_count) { - dbg (__FUNCTION__ " - device not open"); - return; - } - - dbg(__FUNCTION__ " unsupported (at this time)"); - - return; -} - - -static void bluetooth_unthrottle (struct tty_struct * tty) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__); - - if (!bluetooth) { - return; - } - - dbg(__FUNCTION__); - - if (!bluetooth->open_count) { - dbg (__FUNCTION__ " - device not open"); - return; - } - - dbg(__FUNCTION__ " unsupported (at this time)"); -} - - -static int bluetooth_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__); - - if (!bluetooth) { - return -ENODEV; - } - - dbg(__FUNCTION__ " - cmd 0x%.4x", cmd); - - if (!bluetooth->open_count) { - dbg (__FUNCTION__ " - device not open"); - return -ENODEV; - } - - /* FIXME!!! */ - return -ENOIOCTLCMD; -} - - -static void bluetooth_set_termios (struct tty_struct *tty, struct termios * old) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__); - - if (!bluetooth) { - return; - } - - dbg(__FUNCTION__); - - if (!bluetooth->open_count) { - dbg (__FUNCTION__ " - device not open"); - return; - } - - /* FIXME!!! */ - - return; -} - - -#ifdef BTBUGGYHARDWARE -void btusb_enable_bulk_read(struct tty_struct *tty){ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__); - int result; - - if (!bluetooth) { - return; - } - - dbg(__FUNCTION__); - - if (!bluetooth->open_count) { - dbg (__FUNCTION__ " - device not open"); - return; - } - - if (bluetooth->read_urb) { - FILL_BULK_URB(bluetooth->read_urb, bluetooth->dev, - usb_rcvbulkpipe(bluetooth->dev, bluetooth->bulk_in_endpointAddress), - bluetooth->bulk_in_buffer, bluetooth->bulk_in_buffer_size, - bluetooth_read_bulk_callback, bluetooth); - result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL); - if (result) - err (__FUNCTION__ " - failed submitting read urb, error %d", result); - } -} - -void btusb_disable_bulk_read(struct tty_struct *tty){ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__); - - if (!bluetooth) { - return; - } - - dbg(__FUNCTION__); - - if (!bluetooth->open_count) { - dbg (__FUNCTION__ " - device not open"); - return; - } - - if ((bluetooth->read_urb) && (bluetooth->read_urb->actual_length)) - usb_unlink_urb(bluetooth->read_urb); -} -#endif - - -/***************************************************************************** - * urb callback functions - *****************************************************************************/ - - -static void bluetooth_int_callback (struct urb *urb) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)urb->context, __FUNCTION__); - unsigned char *data = urb->transfer_buffer; - unsigned int i; - unsigned int count = urb->actual_length; - unsigned int packet_size; - - dbg(__FUNCTION__); - - if (!bluetooth) { - dbg(__FUNCTION__ " - bad bluetooth pointer, exiting"); - return; - } - - if (urb->status) { - dbg(__FUNCTION__ " - nonzero int status received: %d", urb->status); - return; - } - - if (!count) { - dbg(__FUNCTION__ " - zero length int"); - return; - } - - -#ifdef DEBUG - if (count) { - printk (KERN_DEBUG __FILE__ ": " __FUNCTION__ "- length = %d, data = ", count); - for (i = 0; i < count; ++i) { - printk ("%.2x ", data[i]); - } - printk ("\n"); - } -#endif - -#ifdef BTBUGGYHARDWARE - if ((count >= 2) && (data[0] == 0xFF) && (data[1] == 0x00)) { - data += 2; - count -= 2; - } - if (count == 0) { - urb->actual_length = 0; - return; - } -#endif - /* We add a packet type identifier to the beginning of each - HCI frame. This makes the data in the tty look like a - serial USB devices. Each HCI frame can be broken across - multiple URBs so we buffer them until we have a full hci - packet */ - - if (!bluetooth->int_packet_pos) { - bluetooth->int_buffer[0] = EVENT_PKT; - bluetooth->int_packet_pos++; - } - - if (bluetooth->int_packet_pos + count > EVENT_BUFFER_SIZE) { - err(__FUNCTION__ " - exceeded EVENT_BUFFER_SIZE"); - bluetooth->int_packet_pos = 0; - return; - } - - memcpy (&bluetooth->int_buffer[bluetooth->int_packet_pos], - urb->transfer_buffer, count); - bluetooth->int_packet_pos += count; - urb->actual_length = 0; - - if (bluetooth->int_packet_pos >= EVENT_HDR_SIZE) - packet_size = bluetooth->int_buffer[2]; - else - return; - - if (packet_size + EVENT_HDR_SIZE < bluetooth->int_packet_pos) { - err(__FUNCTION__ " - packet was too long"); - bluetooth->int_packet_pos = 0; - return; - } - - if (packet_size + EVENT_HDR_SIZE == bluetooth->int_packet_pos) { - for (i = 0; i < bluetooth->int_packet_pos; ++i) { - /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them */ - if (bluetooth->tty->flip.count >= TTY_FLIPBUF_SIZE) { - tty_flip_buffer_push(bluetooth->tty); - } - tty_insert_flip_char(bluetooth->tty, bluetooth->int_buffer[i], 0); - } - tty_flip_buffer_push(bluetooth->tty); - - bluetooth->int_packet_pos = 0; - } -} - - -static void bluetooth_ctrl_callback (struct urb *urb) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)urb->context, __FUNCTION__); - - dbg(__FUNCTION__); - - if (!bluetooth) { - dbg(__FUNCTION__ " - bad bluetooth pointer, exiting"); - return; - } - - if (urb->status) { - dbg(__FUNCTION__ " - nonzero read bulk status received: %d", urb->status); - return; - } -} - - -static void bluetooth_read_bulk_callback (struct urb *urb) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)urb->context, __FUNCTION__); - unsigned char *data = urb->transfer_buffer; - unsigned int count = urb->actual_length; - unsigned int i; - unsigned int packet_size; - int result; - - - dbg(__FUNCTION__); - - if (!bluetooth) { - dbg(__FUNCTION__ " - bad bluetooth pointer, exiting"); - return; - } - - if (urb->status) { - dbg(__FUNCTION__ " - nonzero read bulk status received: %d", urb->status); - if (urb->status == -ENOENT) { - dbg(__FUNCTION__ " - URB canceled, won't reschedule"); - return; - } - goto exit; - } - - if (!count) { - dbg(__FUNCTION__ " - zero length read bulk"); - goto exit; - } - -#ifdef DEBUG - if (count) { - printk (KERN_DEBUG __FILE__ ": " __FUNCTION__ "- length = %d, data = ", count); - for (i = 0; i < count; ++i) { - printk ("%.2x ", data[i]); - } - printk ("\n"); - } -#endif -#ifdef BTBUGGYHARDWARE - if ((count == 4) && (data[0] == 0x00) && (data[1] == 0x00) - && (data[2] == 0x00) && (data[3] == 0x00)) { - urb->actual_length = 0; - FILL_BULK_URB(bluetooth->read_urb, bluetooth->dev, - usb_rcvbulkpipe(bluetooth->dev, bluetooth->bulk_in_endpointAddress), - bluetooth->bulk_in_buffer, bluetooth->bulk_in_buffer_size, - bluetooth_read_bulk_callback, bluetooth); - result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL); - if (result) - err (__FUNCTION__ " - failed resubmitting read urb, error %d", result); - - return; - } -#endif - /* We add a packet type identifier to the beginning of each - HCI frame. This makes the data in the tty look like a - serial USB devices. Each HCI frame can be broken across - multiple URBs so we buffer them until we have a full hci - packet */ - - if (!bluetooth->bulk_packet_pos) { - bluetooth->bulk_buffer[0] = ACL_PKT; - bluetooth->bulk_packet_pos++; - } - - if (bluetooth->bulk_packet_pos + count > ACL_BUFFER_SIZE) { - err(__FUNCTION__ " - exceeded ACL_BUFFER_SIZE"); - bluetooth->bulk_packet_pos = 0; - goto exit; - } - - memcpy (&bluetooth->bulk_buffer[bluetooth->bulk_packet_pos], - urb->transfer_buffer, count); - bluetooth->bulk_packet_pos += count; - urb->actual_length = 0; - - if (bluetooth->bulk_packet_pos >= ACL_HDR_SIZE) { - packet_size = CHAR2INT16(bluetooth->bulk_buffer[4],bluetooth->bulk_buffer[3]); - } else { - goto exit; - } - - if (packet_size + ACL_HDR_SIZE < bluetooth->bulk_packet_pos) { - err(__FUNCTION__ " - packet was too long"); - bluetooth->bulk_packet_pos = 0; - goto exit; - } - - if (packet_size + ACL_HDR_SIZE == bluetooth->bulk_packet_pos) { - for (i = 0; i < bluetooth->bulk_packet_pos; ++i) { - /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */ - if (bluetooth->tty->flip.count >= TTY_FLIPBUF_SIZE) { - tty_flip_buffer_push(bluetooth->tty); - } - tty_insert_flip_char(bluetooth->tty, bluetooth->bulk_buffer[i], 0); - } - tty_flip_buffer_push(bluetooth->tty); - bluetooth->bulk_packet_pos = 0; - } - -exit: - if (!bluetooth || !bluetooth->open_count) - return; - - FILL_BULK_URB(bluetooth->read_urb, bluetooth->dev, - usb_rcvbulkpipe(bluetooth->dev, bluetooth->bulk_in_endpointAddress), - bluetooth->bulk_in_buffer, bluetooth->bulk_in_buffer_size, - bluetooth_read_bulk_callback, bluetooth); - result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL); - if (result) - err (__FUNCTION__ " - failed resubmitting read urb, error %d", result); - - return; -} - - -static void bluetooth_write_bulk_callback (struct urb *urb) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)urb->context, __FUNCTION__); - - dbg(__FUNCTION__); - - if (!bluetooth) { - dbg(__FUNCTION__ " - bad bluetooth pointer, exiting"); - return; - } - - if (urb->status) { - dbg(__FUNCTION__ " - nonzero write bulk status received: %d", urb->status); - return; - } - - /* wake up our little function to let the tty layer know that something happened */ - queue_task(&bluetooth->tqueue, &tq_immediate); - mark_bh(IMMEDIATE_BH); - return; -} - - -static void bluetooth_softint(void *private) -{ - struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)private, __FUNCTION__); - struct tty_struct *tty; - - dbg(__FUNCTION__); - - if (!bluetooth) { - return; - } - - tty = bluetooth->tty; - if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) { - dbg(__FUNCTION__ " - write wakeup call."); - (tty->ldisc.write_wakeup)(tty); - } - - wake_up_interruptible(&tty->write_wait); -} - - -static void * usb_bluetooth_probe(struct usb_device *dev, unsigned int ifnum, - const struct usb_device_id *id) -{ - struct usb_bluetooth *bluetooth = NULL; - struct usb_interface_descriptor *interface; - struct usb_endpoint_descriptor *endpoint; - struct usb_endpoint_descriptor *interrupt_in_endpoint[8]; - struct usb_endpoint_descriptor *bulk_in_endpoint[8]; - struct usb_endpoint_descriptor *bulk_out_endpoint[8]; - int control_out_endpoint; - - int minor; - int buffer_size; - int i; - int num_interrupt_in = 0; - int num_bulk_in = 0; - int num_bulk_out = 0; - - interface = &dev->actconfig->interface[ifnum].altsetting[0]; - control_out_endpoint = interface->bInterfaceNumber; - - /* find the endpoints that we need */ - 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_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_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_in_endpoint[num_interrupt_in] = endpoint; - ++num_interrupt_in; - } - } - - /* according to the spec, we can only have 1 bulk_in, 1 bulk_out, and 1 interrupt_in endpoints */ - if ((num_bulk_in != 1) || - (num_bulk_out != 1) || - (num_interrupt_in != 1)) { - dbg (__FUNCTION__ " - improper number of endpoints. Bluetooth driver not bound."); - return NULL; - } - - MOD_INC_USE_COUNT; - info("USB Bluetooth converter detected"); - - for (minor = 0; minor < BLUETOOTH_TTY_MINORS && bluetooth_table[minor]; ++minor) - ; - if (bluetooth_table[minor]) { - err("No more free Bluetooth devices"); - MOD_DEC_USE_COUNT; - return NULL; - } - - if (!(bluetooth = kmalloc(sizeof(struct usb_bluetooth), GFP_KERNEL))) { - err("Out of memory"); - MOD_DEC_USE_COUNT; - return NULL; - } - - memset(bluetooth, 0, sizeof(struct usb_bluetooth)); - - bluetooth->magic = USB_BLUETOOTH_MAGIC; - bluetooth->dev = dev; - bluetooth->minor = minor; - bluetooth->tqueue.routine = bluetooth_softint; - bluetooth->tqueue.data = bluetooth; - init_MUTEX(&bluetooth->lock); - - /* record the interface number for the control out */ - bluetooth->control_out_bInterfaceNum = control_out_endpoint; - - /* create our control out urb pool */ - for (i = 0; i < NUM_CONTROL_URBS; ++i) { - struct urb *urb = usb_alloc_urb(0, GFP_KERNEL); - if (urb == NULL) { - err("No free urbs available"); - goto probe_error; - } - urb->transfer_buffer = NULL; - bluetooth->control_urb_pool[i] = urb; - } - - /* set up the endpoint information */ - endpoint = bulk_in_endpoint[0]; - bluetooth->read_urb = usb_alloc_urb (0, GFP_KERNEL); - if (!bluetooth->read_urb) { - err("No free urbs available"); - goto probe_error; - } - bluetooth->bulk_in_buffer_size = buffer_size = endpoint->wMaxPacketSize; - bluetooth->bulk_in_endpointAddress = endpoint->bEndpointAddress; - bluetooth->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL); - if (!bluetooth->bulk_in_buffer) { - err("Couldn't allocate bulk_in_buffer"); - goto probe_error; - } - FILL_BULK_URB(bluetooth->read_urb, dev, usb_rcvbulkpipe(dev, endpoint->bEndpointAddress), - bluetooth->bulk_in_buffer, buffer_size, bluetooth_read_bulk_callback, bluetooth); - - endpoint = bulk_out_endpoint[0]; - bluetooth->bulk_out_endpointAddress = endpoint->bEndpointAddress; - - /* create our write urb pool */ - for (i = 0; i < NUM_BULK_URBS; ++i) { - struct urb *urb = usb_alloc_urb(0, GFP_KERNEL); - if (urb == NULL) { - err("No free urbs available"); - goto probe_error; - } - urb->transfer_buffer = kmalloc (bluetooth->bulk_out_buffer_size, GFP_KERNEL); - if (urb->transfer_buffer == NULL) { - err("out of memory"); - goto probe_error; - } - bluetooth->write_urb_pool[i] = urb; - } - - bluetooth->bulk_out_buffer_size = endpoint->wMaxPacketSize * 2; - - endpoint = interrupt_in_endpoint[0]; - bluetooth->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!bluetooth->interrupt_in_urb) { - err("No free urbs available"); - goto probe_error; - } - bluetooth->interrupt_in_buffer_size = buffer_size = endpoint->wMaxPacketSize; - bluetooth->interrupt_in_endpointAddress = endpoint->bEndpointAddress; - bluetooth->interrupt_in_interval = endpoint->bInterval; - bluetooth->interrupt_in_buffer = kmalloc (buffer_size, GFP_KERNEL); - if (!bluetooth->interrupt_in_buffer) { - err("Couldn't allocate interrupt_in_buffer"); - goto probe_error; - } - FILL_INT_URB(bluetooth->interrupt_in_urb, dev, usb_rcvintpipe(dev, endpoint->bEndpointAddress), - bluetooth->interrupt_in_buffer, buffer_size, bluetooth_int_callback, - bluetooth, endpoint->bInterval); - - /* initialize the devfs nodes for this device and let the user know what bluetooths we are bound to */ - tty_register_devfs (&bluetooth_tty_driver, 0, minor); - info("Bluetooth converter now attached to ttyUB%d (or usb/ttub/%d for devfs)", minor, minor); - - bluetooth_table[minor] = bluetooth; - - return bluetooth; /* success */ - -probe_error: - if (bluetooth->read_urb) - usb_free_urb (bluetooth->read_urb); - if (bluetooth->bulk_in_buffer) - kfree (bluetooth->bulk_in_buffer); - if (bluetooth->interrupt_in_urb) - usb_free_urb (bluetooth->interrupt_in_urb); - if (bluetooth->interrupt_in_buffer) - kfree (bluetooth->interrupt_in_buffer); - for (i = 0; i < NUM_BULK_URBS; ++i) - if (bluetooth->write_urb_pool[i]) { - if (bluetooth->write_urb_pool[i]->transfer_buffer) - kfree (bluetooth->write_urb_pool[i]->transfer_buffer); - usb_free_urb (bluetooth->write_urb_pool[i]); - } - for (i = 0; i < NUM_CONTROL_URBS; ++i) - if (bluetooth->control_urb_pool[i]) { - if (bluetooth->control_urb_pool[i]->transfer_buffer) - kfree (bluetooth->control_urb_pool[i]->transfer_buffer); - usb_free_urb (bluetooth->control_urb_pool[i]); - } - - bluetooth_table[minor] = NULL; - - /* free up any memory that we allocated */ - kfree (bluetooth); - MOD_DEC_USE_COUNT; - return NULL; -} - - -static void usb_bluetooth_disconnect(struct usb_device *dev, void *ptr) -{ - struct usb_bluetooth *bluetooth = (struct usb_bluetooth *) ptr; - int i; - - if (bluetooth) { - if ((bluetooth->open_count) && (bluetooth->tty)) - tty_hangup(bluetooth->tty); - - bluetooth->open_count = 0; - - if (bluetooth->read_urb) { - usb_unlink_urb (bluetooth->read_urb); - usb_free_urb (bluetooth->read_urb); - } - if (bluetooth->bulk_in_buffer) - kfree (bluetooth->bulk_in_buffer); - - if (bluetooth->interrupt_in_urb) { - usb_unlink_urb (bluetooth->interrupt_in_urb); - usb_free_urb (bluetooth->interrupt_in_urb); - } - if (bluetooth->interrupt_in_buffer) - kfree (bluetooth->interrupt_in_buffer); - - tty_unregister_devfs (&bluetooth_tty_driver, bluetooth->minor); - - for (i = 0; i < NUM_BULK_URBS; ++i) { - if (bluetooth->write_urb_pool[i]) { - usb_unlink_urb (bluetooth->write_urb_pool[i]); - if (bluetooth->write_urb_pool[i]->transfer_buffer) - kfree (bluetooth->write_urb_pool[i]->transfer_buffer); - usb_free_urb (bluetooth->write_urb_pool[i]); - } - } - for (i = 0; i < NUM_CONTROL_URBS; ++i) { - if (bluetooth->control_urb_pool[i]) { - usb_unlink_urb (bluetooth->control_urb_pool[i]); - if (bluetooth->control_urb_pool[i]->transfer_buffer) - kfree (bluetooth->control_urb_pool[i]->transfer_buffer); - usb_free_urb (bluetooth->control_urb_pool[i]); - } - } - - info("Bluetooth converter now disconnected from ttyUB%d", bluetooth->minor); - - bluetooth_table[bluetooth->minor] = NULL; - - /* free up any memory that we allocated */ - kfree (bluetooth); - - } else { - info("device disconnected"); - } - - MOD_DEC_USE_COUNT; -} - - -static struct tty_driver bluetooth_tty_driver = { - magic: TTY_DRIVER_MAGIC, - driver_name: "usb-bluetooth", - name: "usb/ttub/%d", - major: BLUETOOTH_TTY_MAJOR, - minor_start: 0, - num: BLUETOOTH_TTY_MINORS, - type: TTY_DRIVER_TYPE_SERIAL, - subtype: SERIAL_TYPE_NORMAL, - flags: TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS, - - refcount: &bluetooth_refcount, - table: bluetooth_tty, - termios: bluetooth_termios, - termios_locked: bluetooth_termios_locked, - - open: bluetooth_open, - close: bluetooth_close, - write: bluetooth_write, - write_room: bluetooth_write_room, - ioctl: bluetooth_ioctl, - set_termios: bluetooth_set_termios, - throttle: bluetooth_throttle, - unthrottle: bluetooth_unthrottle, - chars_in_buffer: bluetooth_chars_in_buffer, -}; - - -int usb_bluetooth_init(void) -{ - int i; - int result; - - /* Initalize our global data */ - for (i = 0; i < BLUETOOTH_TTY_MINORS; ++i) { - bluetooth_table[i] = NULL; - } - - info ("USB Bluetooth support registered"); - - /* register the tty driver */ - bluetooth_tty_driver.init_termios = tty_std_termios; - bluetooth_tty_driver.init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - if (tty_register_driver (&bluetooth_tty_driver)) { - err(__FUNCTION__ " - failed to register tty driver"); - return -1; - } - - /* register the USB driver */ - result = usb_register(&usb_bluetooth_driver); - if (result < 0) { - tty_unregister_driver(&bluetooth_tty_driver); - err("usb_register failed for the USB bluetooth driver. Error number %d", result); - return -1; - } - - info(DRIVER_DESC " " DRIVER_VERSION); - - return 0; -} - - -void usb_bluetooth_exit(void) -{ - usb_deregister(&usb_bluetooth_driver); - tty_unregister_driver(&bluetooth_tty_driver); -} - - -module_init(usb_bluetooth_init); -module_exit(usb_bluetooth_exit); - -/* Module information */ -MODULE_AUTHOR( DRIVER_AUTHOR ); -MODULE_DESCRIPTION( DRIVER_DESC ); -MODULE_LICENSE("GPL"); - diff -Nru a/drivers/usb/class/bluetty.c b/drivers/usb/class/bluetty.c --- /dev/null Wed Dec 31 16:00:00 1969 +++ b/drivers/usb/class/bluetty.c Mon Apr 8 15:49:12 2002 @@ -0,0 +1,1364 @@ +/* + * bluetty.c Version 0.13 + * + * Copyright (c) 2000, 2001 Greg Kroah-Hartman <[EMAIL PROTECTED]> + * Copyright (c) 2000 Mark Douglas Corner <[EMAIL PROTECTED]> + * + * USB Bluetooth TTY driver, based on the Bluetooth Spec version 1.0B + * + * (2001/11/30) Version 0.13 gkh + * - added locking patch from Masoodur Rahman <[EMAIL PROTECTED]> + * - removed active variable, as open_count will do. + * + * (2001/07/09) Version 0.12 gkh + * - removed in_interrupt() call, as it doesn't make sense to do + * that anymore. + * + * (2001/06/05) Version 0.11 gkh + * - Fixed problem with read urb status saying that we have shutdown, + * and that we shouldn't resubmit the urb. Patch from unknown. + * + * (2001/05/28) Version 0.10 gkh + * - Fixed problem with using data from userspace in the bluetooth_write + * function as found by the CHECKER project. + * - Added a buffer to the write_urb_pool which reduces the number of + * buffers being created and destroyed for ever write. Also cleans + * up the logic a bit. + * - Added a buffer to the control_urb_pool which fixes a memory leak + * when the device is removed from the system. + * + * (2001/05/28) Version 0.9 gkh + * Fixed problem with bluetooth==NULL for bluetooth_read_bulk_callback + * which was found by both the CHECKER project and Mikko Rahkonen. + * + * (08/04/2001) gb + * Identify version on module load. + * + * (2001/03/10) Version 0.8 gkh + * Fixed problem with not unlinking interrupt urb on device close + * and resubmitting the read urb on error with bluetooth struct. + * Thanks to Narayan Mohanram <[EMAIL PROTECTED]> for the + * fixes. + * + * (11/29/2000) Version 0.7 gkh + * Fixed problem with overrunning the tty flip buffer. + * Removed unneeded NULL pointer initialization. + * + * (10/05/2000) Version 0.6 gkh + * Fixed bug with urb->dev not being set properly, now that the usb + * core needs it. + * Got a real major id number and name. + * + * (08/06/2000) Version 0.5 gkh + * Fixed problem of not resubmitting the bulk read urb if there is + * an error in the callback. Ericsson devices seem to need this. + * + * (07/11/2000) Version 0.4 gkh + * Fixed bug in disconnect for when we call tty_hangup + * Fixed bug in bluetooth_ctrl_msg where the bluetooth struct was not + * getting attached to the control urb properly. + * Fixed bug in bluetooth_write where we pay attention to the result + * of bluetooth_ctrl_msg. + * + * (08/03/2000) Version 0.3 gkh mdc + * Merged in Mark's changes to make the driver play nice with the Axis + * stack. + * Made the write bulk use an urb pool to enable larger transfers with + * fewer calls to the driver. + * Fixed off by one bug in acl pkt receive + * Made packet counters specific to each bluetooth device + * Added checks for zero length callbacks + * Added buffers for int and bulk packets. Had to do this otherwise + * packet types could intermingle. + * Made a control urb pool for the control messages. + * + * (07/11/2000) Version 0.2 gkh + * Fixed a small bug found by Nils Faerber in the usb_bluetooth_probe + * function. + * + * (07/09/2000) Version 0.1 gkh + * Initial release. Has support for sending ACL data (which is really just + * a HCI frame.) Raw HCI commands and HCI events are not supported. + * A ioctl will probably be needed for the HCI commands and events in the + * future. All isoch endpoints are ignored at this time also. + * This driver should work for all currently shipping USB Bluetooth + * devices at this time :) + * + */ + +/* + * 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 program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +#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/slab.h> +#include <linux/fcntl.h> +#include <linux/tty.h> +#include <linux/tty_driver.h> +#include <linux/tty_flip.h> +#include <linux/module.h> + +#define DEBUG +#include <linux/usb.h> + +/* + * Version Information + */ +#define DRIVER_VERSION "v0.13" +#define DRIVER_AUTHOR "Greg Kroah-Hartman, Mark Douglas Corner" +#define DRIVER_DESC "USB Bluetooth tty driver" + +/* define this if you have hardware that is not good */ +/*#define BTBUGGYHARDWARE */ + +/* Class, SubClass, and Protocol codes that describe a Bluetooth device */ +#define WIRELESS_CLASS_CODE 0xe0 +#define RF_SUBCLASS_CODE 0x01 +#define BLUETOOTH_PROGRAMMING_PROTOCOL_CODE 0x01 + + +#define BLUETOOTH_TTY_MAJOR 216 /* real device node major id */ +#define BLUETOOTH_TTY_MINORS 256 /* whole lotta bluetooth devices */ + +#define USB_BLUETOOTH_MAGIC 0x6d02 /* magic number for bluetooth struct */ + +#define BLUETOOTH_CONTROL_REQUEST_TYPE 0x20 + +/* Bluetooth packet types */ +#define CMD_PKT 0x01 +#define ACL_PKT 0x02 +#define SCO_PKT 0x03 +#define EVENT_PKT 0x04 +#define ERROR_PKT 0x05 +#define NEG_PKT 0x06 + +/* Message sizes */ +#define MAX_EVENT_SIZE 0xFF +#define EVENT_HDR_SIZE 3 /* 2 for the header + 1 for the type indicator +*/ +#define EVENT_BUFFER_SIZE (MAX_EVENT_SIZE + EVENT_HDR_SIZE) + +#define MAX_ACL_SIZE 0xFFFF +#define ACL_HDR_SIZE 5 /* 4 for the header + 1 for the type indicator +*/ +#define ACL_BUFFER_SIZE (MAX_ACL_SIZE + ACL_HDR_SIZE) + +/* parity check flag */ +#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK)) + +#define CHAR2INT16(c1,c0) (((u32)((c1) & 0xff) << 8) + (u32)((c0) & 0xff)) + +#define NUM_BULK_URBS 24 +#define NUM_CONTROL_URBS 16 + +struct usb_bluetooth { + int magic; + struct usb_device * dev; + struct tty_driver * tty_driver; /* the tty_driver for this device */ + struct tty_struct * tty; /* the coresponding tty for this port +*/ + + unsigned char minor; /* the starting minor number for this +device */ + int throttle; /* throttled by tty layer */ + int open_count; + + __u8 control_out_bInterfaceNum; + struct urb * control_urb_pool[NUM_CONTROL_URBS]; + struct usb_ctrlrequest dr[NUM_CONTROL_URBS]; + + unsigned char * interrupt_in_buffer; + struct urb * interrupt_in_urb; + __u8 interrupt_in_endpointAddress; + __u8 interrupt_in_interval; + int interrupt_in_buffer_size; + + unsigned char * bulk_in_buffer; + struct urb * read_urb; + __u8 bulk_in_endpointAddress; + int bulk_in_buffer_size; + + int bulk_out_buffer_size; + struct urb * write_urb_pool[NUM_BULK_URBS]; + __u8 bulk_out_endpointAddress; + + wait_queue_head_t write_wait; + + struct tq_struct tqueue; /* task queue for line discipline +waking up */ + + unsigned int int_packet_pos; + unsigned char int_buffer[EVENT_BUFFER_SIZE]; + unsigned int bulk_packet_pos; + unsigned char bulk_buffer[ACL_BUFFER_SIZE]; /* 64k preallocated, +fix? */ + struct semaphore lock; +}; + + +/* local function prototypes */ +static int bluetooth_open (struct tty_struct *tty, struct file *filp); +static void bluetooth_close (struct tty_struct *tty, struct file *filp); +static int bluetooth_write (struct tty_struct *tty, int from_user, const +unsigned char *buf, int count); +static int bluetooth_write_room (struct tty_struct *tty); +static int bluetooth_chars_in_buffer (struct tty_struct *tty); +static void bluetooth_throttle (struct tty_struct *tty); +static void bluetooth_unthrottle (struct tty_struct *tty); +static int bluetooth_ioctl (struct tty_struct *tty, struct file *file, +unsigned int cmd, unsigned long arg); +static void bluetooth_set_termios (struct tty_struct *tty, struct termios *old); + +static void bluetooth_int_callback (struct urb *urb); +static void bluetooth_ctrl_callback (struct urb *urb); +static void bluetooth_read_bulk_callback (struct urb *urb); +static void bluetooth_write_bulk_callback (struct urb *urb); + +static void * usb_bluetooth_probe(struct usb_device *dev, unsigned int ifnum, + const struct usb_device_id *id); +static void usb_bluetooth_disconnect (struct usb_device *dev, void *ptr); + + +static struct usb_device_id usb_bluetooth_ids [] = { + { USB_DEVICE_INFO(WIRELESS_CLASS_CODE, RF_SUBCLASS_CODE, +BLUETOOTH_PROGRAMMING_PROTOCOL_CODE) }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE (usb, usb_bluetooth_ids); + +static struct usb_driver usb_bluetooth_driver = { + name: "bluetty", + probe: usb_bluetooth_probe, + disconnect: usb_bluetooth_disconnect, + id_table: usb_bluetooth_ids, +}; + +static int bluetooth_refcount; +static struct tty_driver bluetooth_tty_driver; +static struct tty_struct * bluetooth_tty[BLUETOOTH_TTY_MINORS]; +static struct termios * bluetooth_termios[BLUETOOTH_TTY_MINORS]; +static struct termios * bluetooth_termios_locked[BLUETOOTH_TTY_MINORS]; +static struct usb_bluetooth *bluetooth_table[BLUETOOTH_TTY_MINORS]; + + +static inline int bluetooth_paranoia_check (struct usb_bluetooth *bluetooth, const +char *function) +{ + if (!bluetooth) { + dbg("%s - bluetooth == NULL", function); + return -1; + } + if (bluetooth->magic != USB_BLUETOOTH_MAGIC) { + dbg("%s - bad magic number for bluetooth", function); + return -1; + } + + return 0; +} + + +static inline struct usb_bluetooth* get_usb_bluetooth (struct usb_bluetooth +*bluetooth, const char *function) +{ + if (!bluetooth || + bluetooth_paranoia_check (bluetooth, function)) { + /* then say that we dont have a valid usb_bluetooth thing, which will + * end up generating -ENODEV return values */ + return NULL; + } + + return bluetooth; +} + + +static inline struct usb_bluetooth *get_bluetooth_by_minor (int minor) +{ + return bluetooth_table[minor]; +} + + +static int bluetooth_ctrl_msg (struct usb_bluetooth *bluetooth, int request, int +value, const unsigned char *buf, int len) +{ + struct urb *urb = NULL; + struct usb_ctrlrequest *dr = NULL; + int i; + int status; + + dbg (__FUNCTION__); + + /* try to find a free urb in our list */ + for (i = 0; i < NUM_CONTROL_URBS; ++i) { + if (bluetooth->control_urb_pool[i]->status != -EINPROGRESS) { + urb = bluetooth->control_urb_pool[i]; + dr = &bluetooth->dr[i]; + break; + } + } + if (urb == NULL) { + dbg (__FUNCTION__ " - no free urbs"); + return -ENOMEM; + } + + /* keep increasing the urb transfer buffer to fit the size of the message */ + if (urb->transfer_buffer == NULL) { + urb->transfer_buffer = kmalloc (len, GFP_KERNEL); + if (urb->transfer_buffer == NULL) { + err (__FUNCTION__" - out of memory"); + return -ENOMEM; + } + } + if (urb->transfer_buffer_length < len) { + kfree (urb->transfer_buffer); + urb->transfer_buffer = kmalloc (len, GFP_KERNEL); + if (urb->transfer_buffer == NULL) { + err (__FUNCTION__" - out of memory"); + return -ENOMEM; + } + } + memcpy (urb->transfer_buffer, buf, len); + + dr->bRequestType= BLUETOOTH_CONTROL_REQUEST_TYPE; + dr->bRequest = request; + dr->wValue = cpu_to_le16((u16) value); + dr->wIndex = cpu_to_le16((u16) bluetooth->control_out_bInterfaceNum); + dr->wLength = cpu_to_le16((u16) len); + + FILL_CONTROL_URB (urb, bluetooth->dev, usb_sndctrlpipe(bluetooth->dev, 0), + (unsigned char*)dr, urb->transfer_buffer, len, +bluetooth_ctrl_callback, bluetooth); + + /* send it down the pipe */ + status = usb_submit_urb(urb, GFP_KERNEL); + if (status) + dbg(__FUNCTION__ " - usb_submit_urb(control) failed with status = %d", +status); + + return status; +} + + + + + +/***************************************************************************** + * Driver tty interface functions + *****************************************************************************/ +static int bluetooth_open (struct tty_struct *tty, struct file * filp) +{ + struct usb_bluetooth *bluetooth; + int result; + + dbg(__FUNCTION__); + + /* initialize the pointer incase something fails */ + tty->driver_data = NULL; + + /* get the bluetooth object associated with this tty pointer */ + bluetooth = get_bluetooth_by_minor (minor(tty->device)); + + if (bluetooth_paranoia_check (bluetooth, __FUNCTION__)) { + return -ENODEV; + } + + down (&bluetooth->lock); + + ++bluetooth->open_count; + if (bluetooth->open_count == 1) { + /* set up our structure making the tty driver remember our object, and +us it */ + tty->driver_data = bluetooth; + bluetooth->tty = tty; + + /* 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. */ + bluetooth->tty->low_latency = 1; + + /* Reset the packet position counters */ + bluetooth->int_packet_pos = 0; + bluetooth->bulk_packet_pos = 0; + +#ifndef BTBUGGYHARDWARE + /* Start reading from the device */ + FILL_BULK_URB (bluetooth->read_urb, bluetooth->dev, + usb_rcvbulkpipe(bluetooth->dev, +bluetooth->bulk_in_endpointAddress), + bluetooth->bulk_in_buffer, + bluetooth->bulk_in_buffer_size, + bluetooth_read_bulk_callback, bluetooth); + result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL); + if (result) + dbg(__FUNCTION__ " - usb_submit_urb(read bulk) failed with +status %d", result); +#endif + FILL_INT_URB (bluetooth->interrupt_in_urb, bluetooth->dev, + usb_rcvintpipe(bluetooth->dev, +bluetooth->interrupt_in_endpointAddress), + bluetooth->interrupt_in_buffer, + bluetooth->interrupt_in_buffer_size, + bluetooth_int_callback, bluetooth, + bluetooth->interrupt_in_interval); + result = usb_submit_urb(bluetooth->interrupt_in_urb, GFP_KERNEL); + if (result) + dbg(__FUNCTION__ " - usb_submit_urb(interrupt in) failed with +status %d", result); + } + + up(&bluetooth->lock); + + return 0; +} + + +static void bluetooth_close (struct tty_struct *tty, struct file * filp) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)tty->driver_data, __FUNCTION__); + int i; + + if (!bluetooth) { + return; + } + + dbg(__FUNCTION__); + + if (!bluetooth->open_count) { + dbg (__FUNCTION__ " - device not opened"); + return; + } + + down (&bluetooth->lock); + + --bluetooth->open_count; + if (bluetooth->open_count <= 0) { + bluetooth->open_count = 0; + + /* shutdown any bulk reads and writes that might be going on */ + for (i = 0; i < NUM_BULK_URBS; ++i) + usb_unlink_urb (bluetooth->write_urb_pool[i]); + usb_unlink_urb (bluetooth->read_urb); + usb_unlink_urb (bluetooth->interrupt_in_urb); + } + up(&bluetooth->lock); +} + + +static int bluetooth_write (struct tty_struct * tty, int from_user, const unsigned +char *buf, int count) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)tty->driver_data, __FUNCTION__); + struct urb *urb = NULL; + unsigned char *temp_buffer = NULL; + const unsigned char *current_buffer; + const unsigned char *current_position; + int bytes_sent; + int buffer_size; + int i; + int retval = 0; + + if (!bluetooth) { + return -ENODEV; + } + + dbg(__FUNCTION__ " - %d byte(s)", count); + + if (!bluetooth->open_count) { + dbg (__FUNCTION__ " - device not opened"); + return -EINVAL; + } + + if (count == 0) { + dbg(__FUNCTION__ " - write request of 0 bytes"); + return 0; + } + if (count == 1) { + dbg(__FUNCTION__ " - write request only included type %d", buf[0]); + return 1; + } + +#ifdef DEBUG + printk (KERN_DEBUG __FILE__ ": " __FUNCTION__ " - length = %d, data = ", +count); + for (i = 0; i < count; ++i) { + printk ("%.2x ", buf[i]); + } + printk ("\n"); +#endif + + if (from_user) { + temp_buffer = kmalloc (count, GFP_KERNEL); + if (temp_buffer == NULL) { + err (__FUNCTION__ "- out of memory."); + retval = -ENOMEM; + goto exit; + } + copy_from_user (temp_buffer, buf, count); + current_buffer = temp_buffer; + } else { + current_buffer = buf; + } + + switch (*current_buffer) { + /* First byte indicates the type of packet */ + case CMD_PKT: + /* dbg(__FUNCTION__ "- Send cmd_pkt len:%d", count);*/ + + retval = bluetooth_ctrl_msg (bluetooth, 0x00, 0x00, +¤t_buffer[1], count-1); + if (retval) { + goto exit; + } + retval = count; + break; + + case ACL_PKT: + current_position = current_buffer; + ++current_position; + --count; + bytes_sent = 0; + + while (count > 0) { + urb = NULL; + + /* try to find a free urb in our list */ + for (i = 0; i < NUM_BULK_URBS; ++i) { + if (bluetooth->write_urb_pool[i]->status != +-EINPROGRESS) { + urb = bluetooth->write_urb_pool[i]; + break; + } + } + if (urb == NULL) { + dbg (__FUNCTION__ " - no free urbs"); + retval = bytes_sent; + goto exit; + } + + + buffer_size = min (count, +bluetooth->bulk_out_buffer_size); + memcpy (urb->transfer_buffer, current_position, +buffer_size); + + /* build up our urb */ + FILL_BULK_URB (urb, bluetooth->dev, +usb_sndbulkpipe(bluetooth->dev, bluetooth->bulk_out_endpointAddress), + urb->transfer_buffer, buffer_size, +bluetooth_write_bulk_callback, bluetooth); + urb->transfer_flags |= USB_QUEUE_BULK; + + /* send it down the pipe */ + retval = usb_submit_urb(urb, GFP_KERNEL); + if (retval) { + dbg(__FUNCTION__ " - usb_submit_urb(write +bulk) failed with error = %d", retval); + goto exit; + } +#ifdef BTBUGGYHARDWARE + /* A workaround for the stalled data bug */ + /* May or may not be needed...*/ + if (count != 0) { + udelay(500); + } +#endif + current_position += buffer_size; + bytes_sent += buffer_size; + count -= buffer_size; + } + + retval = bytes_sent + 1; + break; + + default : + dbg(__FUNCTION__" - unsupported (at this time) write type"); + retval = -EINVAL; + break; + } + +exit: + if (temp_buffer != NULL) + kfree (temp_buffer); + + return retval; +} + + +static int bluetooth_write_room (struct tty_struct *tty) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)tty->driver_data, __FUNCTION__); + int room = 0; + int i; + + if (!bluetooth) { + return -ENODEV; + } + + dbg(__FUNCTION__); + + if (!bluetooth->open_count) { + dbg (__FUNCTION__ " - device not open"); + return -EINVAL; + } + + for (i = 0; i < NUM_BULK_URBS; ++i) { + if (bluetooth->write_urb_pool[i]->status != -EINPROGRESS) { + room += bluetooth->bulk_out_buffer_size; + } + } + + dbg(__FUNCTION__ " - returns %d", room); + return room; +} + + +static int bluetooth_chars_in_buffer (struct tty_struct *tty) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)tty->driver_data, __FUNCTION__); + int chars = 0; + int i; + + if (!bluetooth) { + return -ENODEV; + } + + if (!bluetooth->open_count) { + dbg (__FUNCTION__ " - device not open"); + return -EINVAL; + } + + for (i = 0; i < NUM_BULK_URBS; ++i) { + if (bluetooth->write_urb_pool[i]->status == -EINPROGRESS) { + chars += bluetooth->write_urb_pool[i]->transfer_buffer_length; + } + } + + dbg (__FUNCTION__ " - returns %d", chars); + return chars; +} + + +static void bluetooth_throttle (struct tty_struct * tty) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)tty->driver_data, __FUNCTION__); + + if (!bluetooth) { + return; + } + + dbg(__FUNCTION__); + + if (!bluetooth->open_count) { + dbg (__FUNCTION__ " - device not open"); + return; + } + + dbg(__FUNCTION__ " unsupported (at this time)"); + + return; +} + + +static void bluetooth_unthrottle (struct tty_struct * tty) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)tty->driver_data, __FUNCTION__); + + if (!bluetooth) { + return; + } + + dbg(__FUNCTION__); + + if (!bluetooth->open_count) { + dbg (__FUNCTION__ " - device not open"); + return; + } + + dbg(__FUNCTION__ " unsupported (at this time)"); +} + + +static int bluetooth_ioctl (struct tty_struct *tty, struct file * file, unsigned int +cmd, unsigned long arg) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)tty->driver_data, __FUNCTION__); + + if (!bluetooth) { + return -ENODEV; + } + + dbg(__FUNCTION__ " - cmd 0x%.4x", cmd); + + if (!bluetooth->open_count) { + dbg (__FUNCTION__ " - device not open"); + return -ENODEV; + } + + /* FIXME!!! */ + return -ENOIOCTLCMD; +} + + +static void bluetooth_set_termios (struct tty_struct *tty, struct termios * old) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)tty->driver_data, __FUNCTION__); + + if (!bluetooth) { + return; + } + + dbg(__FUNCTION__); + + if (!bluetooth->open_count) { + dbg (__FUNCTION__ " - device not open"); + return; + } + + /* FIXME!!! */ + + return; +} + + +#ifdef BTBUGGYHARDWARE +void btusb_enable_bulk_read(struct tty_struct *tty){ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)tty->driver_data, __FUNCTION__); + int result; + + if (!bluetooth) { + return; + } + + dbg(__FUNCTION__); + + if (!bluetooth->open_count) { + dbg (__FUNCTION__ " - device not open"); + return; + } + + if (bluetooth->read_urb) { + FILL_BULK_URB(bluetooth->read_urb, bluetooth->dev, + usb_rcvbulkpipe(bluetooth->dev, +bluetooth->bulk_in_endpointAddress), + bluetooth->bulk_in_buffer, +bluetooth->bulk_in_buffer_size, + bluetooth_read_bulk_callback, bluetooth); + result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL); + if (result) + err (__FUNCTION__ " - failed submitting read urb, error %d", +result); + } +} + +void btusb_disable_bulk_read(struct tty_struct *tty){ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)tty->driver_data, __FUNCTION__); + + if (!bluetooth) { + return; + } + + dbg(__FUNCTION__); + + if (!bluetooth->open_count) { + dbg (__FUNCTION__ " - device not open"); + return; + } + + if ((bluetooth->read_urb) && (bluetooth->read_urb->actual_length)) + usb_unlink_urb(bluetooth->read_urb); +} +#endif + + +/***************************************************************************** + * urb callback functions + *****************************************************************************/ + + +static void bluetooth_int_callback (struct urb *urb) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)urb->context, __FUNCTION__); + unsigned char *data = urb->transfer_buffer; + unsigned int i; + unsigned int count = urb->actual_length; + unsigned int packet_size; + + dbg(__FUNCTION__); + + if (!bluetooth) { + dbg(__FUNCTION__ " - bad bluetooth pointer, exiting"); + return; + } + + if (urb->status) { + dbg(__FUNCTION__ " - nonzero int status received: %d", urb->status); + return; + } + + if (!count) { + dbg(__FUNCTION__ " - zero length int"); + return; + } + + +#ifdef DEBUG + if (count) { + printk (KERN_DEBUG __FILE__ ": " __FUNCTION__ "- length = %d, data = +", count); + for (i = 0; i < count; ++i) { + printk ("%.2x ", data[i]); + } + printk ("\n"); + } +#endif + +#ifdef BTBUGGYHARDWARE + if ((count >= 2) && (data[0] == 0xFF) && (data[1] == 0x00)) { + data += 2; + count -= 2; + } + if (count == 0) { + urb->actual_length = 0; + return; + } +#endif + /* We add a packet type identifier to the beginning of each + HCI frame. This makes the data in the tty look like a + serial USB devices. Each HCI frame can be broken across + multiple URBs so we buffer them until we have a full hci + packet */ + + if (!bluetooth->int_packet_pos) { + bluetooth->int_buffer[0] = EVENT_PKT; + bluetooth->int_packet_pos++; + } + + if (bluetooth->int_packet_pos + count > EVENT_BUFFER_SIZE) { + err(__FUNCTION__ " - exceeded EVENT_BUFFER_SIZE"); + bluetooth->int_packet_pos = 0; + return; + } + + memcpy (&bluetooth->int_buffer[bluetooth->int_packet_pos], + urb->transfer_buffer, count); + bluetooth->int_packet_pos += count; + urb->actual_length = 0; + + if (bluetooth->int_packet_pos >= EVENT_HDR_SIZE) + packet_size = bluetooth->int_buffer[2]; + else + return; + + if (packet_size + EVENT_HDR_SIZE < bluetooth->int_packet_pos) { + err(__FUNCTION__ " - packet was too long"); + bluetooth->int_packet_pos = 0; + return; + } + + if (packet_size + EVENT_HDR_SIZE == bluetooth->int_packet_pos) { + for (i = 0; i < bluetooth->int_packet_pos; ++i) { + /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop +them */ + if (bluetooth->tty->flip.count >= TTY_FLIPBUF_SIZE) { + tty_flip_buffer_push(bluetooth->tty); + } + tty_insert_flip_char(bluetooth->tty, bluetooth->int_buffer[i], +0); + } + tty_flip_buffer_push(bluetooth->tty); + + bluetooth->int_packet_pos = 0; + } +} + + +static void bluetooth_ctrl_callback (struct urb *urb) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)urb->context, __FUNCTION__); + + dbg(__FUNCTION__); + + if (!bluetooth) { + dbg(__FUNCTION__ " - bad bluetooth pointer, exiting"); + return; + } + + if (urb->status) { + dbg(__FUNCTION__ " - nonzero read bulk status received: %d", +urb->status); + return; + } +} + + +static void bluetooth_read_bulk_callback (struct urb *urb) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)urb->context, __FUNCTION__); + unsigned char *data = urb->transfer_buffer; + unsigned int count = urb->actual_length; + unsigned int i; + unsigned int packet_size; + int result; + + + dbg(__FUNCTION__); + + if (!bluetooth) { + dbg(__FUNCTION__ " - bad bluetooth pointer, exiting"); + return; + } + + if (urb->status) { + dbg(__FUNCTION__ " - nonzero read bulk status received: %d", +urb->status); + if (urb->status == -ENOENT) { + dbg(__FUNCTION__ " - URB canceled, won't reschedule"); + return; + } + goto exit; + } + + if (!count) { + dbg(__FUNCTION__ " - zero length read bulk"); + goto exit; + } + +#ifdef DEBUG + if (count) { + printk (KERN_DEBUG __FILE__ ": " __FUNCTION__ "- length = %d, data = +", count); + for (i = 0; i < count; ++i) { + printk ("%.2x ", data[i]); + } + printk ("\n"); + } +#endif +#ifdef BTBUGGYHARDWARE + if ((count == 4) && (data[0] == 0x00) && (data[1] == 0x00) + && (data[2] == 0x00) && (data[3] == 0x00)) { + urb->actual_length = 0; + FILL_BULK_URB(bluetooth->read_urb, bluetooth->dev, + usb_rcvbulkpipe(bluetooth->dev, +bluetooth->bulk_in_endpointAddress), + bluetooth->bulk_in_buffer, +bluetooth->bulk_in_buffer_size, + bluetooth_read_bulk_callback, bluetooth); + result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL); + if (result) + err (__FUNCTION__ " - failed resubmitting read urb, error %d", +result); + + return; + } +#endif + /* We add a packet type identifier to the beginning of each + HCI frame. This makes the data in the tty look like a + serial USB devices. Each HCI frame can be broken across + multiple URBs so we buffer them until we have a full hci + packet */ + + if (!bluetooth->bulk_packet_pos) { + bluetooth->bulk_buffer[0] = ACL_PKT; + bluetooth->bulk_packet_pos++; + } + + if (bluetooth->bulk_packet_pos + count > ACL_BUFFER_SIZE) { + err(__FUNCTION__ " - exceeded ACL_BUFFER_SIZE"); + bluetooth->bulk_packet_pos = 0; + goto exit; + } + + memcpy (&bluetooth->bulk_buffer[bluetooth->bulk_packet_pos], + urb->transfer_buffer, count); + bluetooth->bulk_packet_pos += count; + urb->actual_length = 0; + + if (bluetooth->bulk_packet_pos >= ACL_HDR_SIZE) { + packet_size = +CHAR2INT16(bluetooth->bulk_buffer[4],bluetooth->bulk_buffer[3]); + } else { + goto exit; + } + + if (packet_size + ACL_HDR_SIZE < bluetooth->bulk_packet_pos) { + err(__FUNCTION__ " - packet was too long"); + bluetooth->bulk_packet_pos = 0; + goto exit; + } + + if (packet_size + ACL_HDR_SIZE == bluetooth->bulk_packet_pos) { + for (i = 0; i < bluetooth->bulk_packet_pos; ++i) { + /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop +them. */ + if (bluetooth->tty->flip.count >= TTY_FLIPBUF_SIZE) { + tty_flip_buffer_push(bluetooth->tty); + } + tty_insert_flip_char(bluetooth->tty, +bluetooth->bulk_buffer[i], 0); + } + tty_flip_buffer_push(bluetooth->tty); + bluetooth->bulk_packet_pos = 0; + } + +exit: + if (!bluetooth || !bluetooth->open_count) + return; + + FILL_BULK_URB(bluetooth->read_urb, bluetooth->dev, + usb_rcvbulkpipe(bluetooth->dev, +bluetooth->bulk_in_endpointAddress), + bluetooth->bulk_in_buffer, bluetooth->bulk_in_buffer_size, + bluetooth_read_bulk_callback, bluetooth); + result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL); + if (result) + err (__FUNCTION__ " - failed resubmitting read urb, error %d", result); + + return; +} + + +static void bluetooth_write_bulk_callback (struct urb *urb) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)urb->context, __FUNCTION__); + + dbg(__FUNCTION__); + + if (!bluetooth) { + dbg(__FUNCTION__ " - bad bluetooth pointer, exiting"); + return; + } + + if (urb->status) { + dbg(__FUNCTION__ " - nonzero write bulk status received: %d", +urb->status); + return; + } + + /* wake up our little function to let the tty layer know that something +happened */ + queue_task(&bluetooth->tqueue, &tq_immediate); + mark_bh(IMMEDIATE_BH); + return; +} + + +static void bluetooth_softint(void *private) +{ + struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth +*)private, __FUNCTION__); + struct tty_struct *tty; + + dbg(__FUNCTION__); + + if (!bluetooth) { + return; + } + + tty = bluetooth->tty; + if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) { + dbg(__FUNCTION__ " - write wakeup call."); + (tty->ldisc.write_wakeup)(tty); + } + + wake_up_interruptible(&tty->write_wait); +} + + +static void * usb_bluetooth_probe(struct usb_device *dev, unsigned int ifnum, + const struct usb_device_id *id) +{ + struct usb_bluetooth *bluetooth = NULL; + struct usb_interface_descriptor *interface; + struct usb_endpoint_descriptor *endpoint; + struct usb_endpoint_descriptor *interrupt_in_endpoint[8]; + struct usb_endpoint_descriptor *bulk_in_endpoint[8]; + struct usb_endpoint_descriptor *bulk_out_endpoint[8]; + int control_out_endpoint; + + int minor; + int buffer_size; + int i; + int num_interrupt_in = 0; + int num_bulk_in = 0; + int num_bulk_out = 0; + + interface = &dev->actconfig->interface[ifnum].altsetting[0]; + control_out_endpoint = interface->bInterfaceNumber; + + /* find the endpoints that we need */ + 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_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_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_in_endpoint[num_interrupt_in] = endpoint; + ++num_interrupt_in; + } + } + + /* according to the spec, we can only have 1 bulk_in, 1 bulk_out, and 1 +interrupt_in endpoints */ + if ((num_bulk_in != 1) || + (num_bulk_out != 1) || + (num_interrupt_in != 1)) { + dbg (__FUNCTION__ " - improper number of endpoints. Bluetooth driver +not bound."); + return NULL; + } + + MOD_INC_USE_COUNT; + info("USB Bluetooth converter detected"); + + for (minor = 0; minor < BLUETOOTH_TTY_MINORS && bluetooth_table[minor]; +++minor) + ; + if (bluetooth_table[minor]) { + err("No more free Bluetooth devices"); + MOD_DEC_USE_COUNT; + return NULL; + } + + if (!(bluetooth = kmalloc(sizeof(struct usb_bluetooth), GFP_KERNEL))) { + err("Out of memory"); + MOD_DEC_USE_COUNT; + return NULL; + } + + memset(bluetooth, 0, sizeof(struct usb_bluetooth)); + + bluetooth->magic = USB_BLUETOOTH_MAGIC; + bluetooth->dev = dev; + bluetooth->minor = minor; + bluetooth->tqueue.routine = bluetooth_softint; + bluetooth->tqueue.data = bluetooth; + init_MUTEX(&bluetooth->lock); + + /* record the interface number for the control out */ + bluetooth->control_out_bInterfaceNum = control_out_endpoint; + + /* create our control out urb pool */ + for (i = 0; i < NUM_CONTROL_URBS; ++i) { + struct urb *urb = usb_alloc_urb(0, GFP_KERNEL); + if (urb == NULL) { + err("No free urbs available"); + goto probe_error; + } + urb->transfer_buffer = NULL; + bluetooth->control_urb_pool[i] = urb; + } + + /* set up the endpoint information */ + endpoint = bulk_in_endpoint[0]; + bluetooth->read_urb = usb_alloc_urb (0, GFP_KERNEL); + if (!bluetooth->read_urb) { + err("No free urbs available"); + goto probe_error; + } + bluetooth->bulk_in_buffer_size = buffer_size = endpoint->wMaxPacketSize; + bluetooth->bulk_in_endpointAddress = endpoint->bEndpointAddress; + bluetooth->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL); + if (!bluetooth->bulk_in_buffer) { + err("Couldn't allocate bulk_in_buffer"); + goto probe_error; + } + FILL_BULK_URB(bluetooth->read_urb, dev, usb_rcvbulkpipe(dev, +endpoint->bEndpointAddress), + bluetooth->bulk_in_buffer, buffer_size, +bluetooth_read_bulk_callback, bluetooth); + + endpoint = bulk_out_endpoint[0]; + bluetooth->bulk_out_endpointAddress = endpoint->bEndpointAddress; + + /* create our write urb pool */ + for (i = 0; i < NUM_BULK_URBS; ++i) { + struct urb *urb = usb_alloc_urb(0, GFP_KERNEL); + if (urb == NULL) { + err("No free urbs available"); + goto probe_error; + } + urb->transfer_buffer = kmalloc (bluetooth->bulk_out_buffer_size, +GFP_KERNEL); + if (urb->transfer_buffer == NULL) { + err("out of memory"); + goto probe_error; + } + bluetooth->write_urb_pool[i] = urb; + } + + bluetooth->bulk_out_buffer_size = endpoint->wMaxPacketSize * 2; + + endpoint = interrupt_in_endpoint[0]; + bluetooth->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!bluetooth->interrupt_in_urb) { + err("No free urbs available"); + goto probe_error; + } + bluetooth->interrupt_in_buffer_size = buffer_size = endpoint->wMaxPacketSize; + bluetooth->interrupt_in_endpointAddress = endpoint->bEndpointAddress; + bluetooth->interrupt_in_interval = endpoint->bInterval; + bluetooth->interrupt_in_buffer = kmalloc (buffer_size, GFP_KERNEL); + if (!bluetooth->interrupt_in_buffer) { + err("Couldn't allocate interrupt_in_buffer"); + goto probe_error; + } + FILL_INT_URB(bluetooth->interrupt_in_urb, dev, usb_rcvintpipe(dev, +endpoint->bEndpointAddress), + bluetooth->interrupt_in_buffer, buffer_size, +bluetooth_int_callback, + bluetooth, endpoint->bInterval); + + /* initialize the devfs nodes for this device and let the user know what +bluetooths we are bound to */ + tty_register_devfs (&bluetooth_tty_driver, 0, minor); + info("Bluetooth converter now attached to ttyUB%d (or usb/ttub/%d for devfs)", +minor, minor); + + bluetooth_table[minor] = bluetooth; + + return bluetooth; /* success */ + +probe_error: + if (bluetooth->read_urb) + usb_free_urb (bluetooth->read_urb); + if (bluetooth->bulk_in_buffer) + kfree (bluetooth->bulk_in_buffer); + if (bluetooth->interrupt_in_urb) + usb_free_urb (bluetooth->interrupt_in_urb); + if (bluetooth->interrupt_in_buffer) + kfree (bluetooth->interrupt_in_buffer); + for (i = 0; i < NUM_BULK_URBS; ++i) + if (bluetooth->write_urb_pool[i]) { + if (bluetooth->write_urb_pool[i]->transfer_buffer) + kfree (bluetooth->write_urb_pool[i]->transfer_buffer); + usb_free_urb (bluetooth->write_urb_pool[i]); + } + for (i = 0; i < NUM_CONTROL_URBS; ++i) + if (bluetooth->control_urb_pool[i]) { + if (bluetooth->control_urb_pool[i]->transfer_buffer) + kfree +(bluetooth->control_urb_pool[i]->transfer_buffer); + usb_free_urb (bluetooth->control_urb_pool[i]); + } + + bluetooth_table[minor] = NULL; + + /* free up any memory that we allocated */ + kfree (bluetooth); + MOD_DEC_USE_COUNT; + return NULL; +} + + +static void usb_bluetooth_disconnect(struct usb_device *dev, void *ptr) +{ + struct usb_bluetooth *bluetooth = (struct usb_bluetooth *) ptr; + int i; + + if (bluetooth) { + if ((bluetooth->open_count) && (bluetooth->tty)) + tty_hangup(bluetooth->tty); + + bluetooth->open_count = 0; + + if (bluetooth->read_urb) { + usb_unlink_urb (bluetooth->read_urb); + usb_free_urb (bluetooth->read_urb); + } + if (bluetooth->bulk_in_buffer) + kfree (bluetooth->bulk_in_buffer); + + if (bluetooth->interrupt_in_urb) { + usb_unlink_urb (bluetooth->interrupt_in_urb); + usb_free_urb (bluetooth->interrupt_in_urb); + } + if (bluetooth->interrupt_in_buffer) + kfree (bluetooth->interrupt_in_buffer); + + tty_unregister_devfs (&bluetooth_tty_driver, bluetooth->minor); + + for (i = 0; i < NUM_BULK_URBS; ++i) { + if (bluetooth->write_urb_pool[i]) { + usb_unlink_urb (bluetooth->write_urb_pool[i]); + if (bluetooth->write_urb_pool[i]->transfer_buffer) + kfree +(bluetooth->write_urb_pool[i]->transfer_buffer); + usb_free_urb (bluetooth->write_urb_pool[i]); + } + } + for (i = 0; i < NUM_CONTROL_URBS; ++i) { + if (bluetooth->control_urb_pool[i]) { + usb_unlink_urb (bluetooth->control_urb_pool[i]); + if (bluetooth->control_urb_pool[i]->transfer_buffer) + kfree +(bluetooth->control_urb_pool[i]->transfer_buffer); + usb_free_urb (bluetooth->control_urb_pool[i]); + } + } + + info("Bluetooth converter now disconnected from ttyUB%d", +bluetooth->minor); + + bluetooth_table[bluetooth->minor] = NULL; + + /* free up any memory that we allocated */ + kfree (bluetooth); + + } else { + info("device disconnected"); + } + + MOD_DEC_USE_COUNT; +} + + +static struct tty_driver bluetooth_tty_driver = { + magic: TTY_DRIVER_MAGIC, + driver_name: "usb-bluetooth", + name: "usb/ttub/%d", + major: BLUETOOTH_TTY_MAJOR, + minor_start: 0, + num: BLUETOOTH_TTY_MINORS, + type: TTY_DRIVER_TYPE_SERIAL, + subtype: SERIAL_TYPE_NORMAL, + flags: TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS, + + refcount: &bluetooth_refcount, + table: bluetooth_tty, + termios: bluetooth_termios, + termios_locked: bluetooth_termios_locked, + + open: bluetooth_open, + close: bluetooth_close, + write: bluetooth_write, + write_room: bluetooth_write_room, + ioctl: bluetooth_ioctl, + set_termios: bluetooth_set_termios, + throttle: bluetooth_throttle, + unthrottle: bluetooth_unthrottle, + chars_in_buffer: bluetooth_chars_in_buffer, +}; + + +int usb_bluetooth_init(void) +{ + int i; + int result; + + /* Initalize our global data */ + for (i = 0; i < BLUETOOTH_TTY_MINORS; ++i) { + bluetooth_table[i] = NULL; + } + + info ("USB Bluetooth support registered"); + + /* register the tty driver */ + bluetooth_tty_driver.init_termios = tty_std_termios; + bluetooth_tty_driver.init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | +CLOCAL; + if (tty_register_driver (&bluetooth_tty_driver)) { + err(__FUNCTION__ " - failed to register tty driver"); + return -1; + } + + /* register the USB driver */ + result = usb_register(&usb_bluetooth_driver); + if (result < 0) { + tty_unregister_driver(&bluetooth_tty_driver); + err("usb_register failed for the USB bluetooth driver. Error number +%d", result); + return -1; + } + + info(DRIVER_DESC " " DRIVER_VERSION); + + return 0; +} + + +void usb_bluetooth_exit(void) +{ + usb_deregister(&usb_bluetooth_driver); + tty_unregister_driver(&bluetooth_tty_driver); +} + + +module_init(usb_bluetooth_init); +module_exit(usb_bluetooth_exit); + +/* Module information */ +MODULE_AUTHOR( DRIVER_AUTHOR ); +MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_LICENSE("GPL"); +
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