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!
diff --git a/drivers/usb/class/bluetty.c b/drivers/usb/class/bluetty.c
new file mode 100644
index 0000000..6bac65e
--- /dev/null
+++ b/drivers/usb/class/bluetty.c
@@ -0,0 +1,1279 @@
+/*
+ * bluetty.c Version 0.13
+ *
+ * Copyright (C) 2000, 2001 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2000 Mark Douglas Corner <mcorner@umich.edu>
+ *
+ * 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 <rmasoodu@in.ibm.com>
+ * - 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 <narayan@RovingNetworks.com> 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/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 <asm/uaccess.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 corresponding 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;
+ __u8 bulk_out_endpointAddress;
+
+ wait_queue_head_t write_wait;
+
+ struct work_struct work; /* work queue entry 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, 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, struct pt_regs *regs);
+static void bluetooth_ctrl_callback (struct urb *urb, struct pt_regs *regs);
+static void bluetooth_read_bulk_callback (struct urb *urb, struct pt_regs *regs);
+static void bluetooth_write_bulk_callback (struct urb *urb, struct pt_regs *regs);
+
+static int usb_bluetooth_probe (struct usb_interface *intf,
+ const struct usb_device_id *id);
+static void usb_bluetooth_disconnect (struct usb_interface *intf);
+
+
+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 = {
+ .owner = THIS_MODULE,
+ .name = "bluetty",
+ .probe = usb_bluetooth_probe,
+ .disconnect = usb_bluetooth_disconnect,
+ .id_table = usb_bluetooth_ids,
+};
+
+static struct tty_driver *bluetooth_tty_driver;
+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 don't 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_index (int index)
+{
+ return bluetooth_table[index];
+}
+
+
+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 ("%s", __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 ("%s - no free urbs", __FUNCTION__);
+ 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 ("%s - out of memory", __FUNCTION__);
+ 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 ("%s - out of memory", __FUNCTION__);
+ 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);
+
+ usb_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("%s - usb_submit_urb(control) failed with status = %d", __FUNCTION__, 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("%s", __FUNCTION__);
+
+ /* initialize the pointer incase something fails */
+ tty->driver_data = NULL;
+
+ /* get the bluetooth object associated with this tty pointer */
+ bluetooth = get_bluetooth_by_index (tty->index);
+
+ 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 */
+ usb_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("%s - usb_submit_urb(read bulk) failed with status %d", __FUNCTION__, result);
+#endif
+ usb_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("%s - usb_submit_urb(interrupt in) failed with status %d", __FUNCTION__, 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__);
+
+ if (!bluetooth) {
+ return;
+ }
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not opened", __FUNCTION__);
+ return;
+ }
+
+ down (&bluetooth->lock);
+
+ --bluetooth->open_count;
+ if (bluetooth->open_count <= 0) {
+ bluetooth->open_count = 0;
+
+ /* shutdown any in-flight urbs that we know about */
+ usb_kill_urb (bluetooth->read_urb);
+ usb_kill_urb (bluetooth->interrupt_in_urb);
+ }
+ up(&bluetooth->lock);
+}
+
+
+static int bluetooth_write (struct tty_struct * tty, 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;
+ unsigned char *urb_buffer;
+ int i;
+ int retval = 0;
+
+ if (!bluetooth) {
+ return -ENODEV;
+ }
+
+ dbg("%s - %d byte(s)", __FUNCTION__, count);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not opened", __FUNCTION__);
+ return -EINVAL;
+ }
+
+ if (count == 0) {
+ dbg("%s - write request of 0 bytes", __FUNCTION__);
+ return 0;
+ }
+ if (count == 1) {
+ dbg("%s - write request only included type %d", __FUNCTION__, buf[0]);
+ return 1;
+ }
+
+#ifdef DEBUG
+ printk (KERN_DEBUG __FILE__ ": %s - length = %d, data = ", __FUNCTION__, count);
+ for (i = 0; i < count; ++i) {
+ printk ("%.2x ", buf[i]);
+ }
+ printk ("\n");
+#endif
+
+ current_buffer = buf;
+
+ switch (*current_buffer) {
+ /* First byte indicates the type of packet */
+ case CMD_PKT:
+ /* dbg("%s- Send cmd_pkt len:%d", __FUNCTION__, count);*/
+
+ retval = bluetooth_ctrl_msg (bluetooth, 0x00, 0x00, ¤t_buffer[1], count-1);
+ if (retval) {
+ goto exit;
+ }
+ retval = count;
+ break;
+
+ case ACL_PKT:
+ ++current_buffer;
+ --count;
+
+ urb_buffer = kmalloc (count, GFP_ATOMIC);
+ if (!urb_buffer) {
+ dev_err(&bluetooth->dev->dev, "out of memory\n");
+ retval = -ENOMEM;
+ goto exit;
+ }
+
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!urb) {
+ dev_err(&bluetooth->dev->dev, "no more free urbs\n");
+ kfree(urb_buffer);
+ retval = -ENOMEM;
+ goto exit;
+ }
+ memcpy (urb_buffer, current_buffer, count);
+
+ /* build up our urb */
+ usb_fill_bulk_urb(urb, bluetooth->dev,
+ usb_sndbulkpipe(bluetooth->dev,
+ bluetooth->bulk_out_endpointAddress),
+ urb_buffer,
+ count,
+ bluetooth_write_bulk_callback,
+ bluetooth);
+
+
+ /* send it down the pipe */
+ retval = usb_submit_urb(urb, GFP_KERNEL);
+ if (retval) {
+ dbg("%s - usb_submit_urb(write bulk) failed with error = %d", __FUNCTION__, retval);
+ goto exit;
+ }
+
+ /* we are done with this urb, so let the host driver
+ * really free it when it is finished with it */
+ usb_free_urb (urb);
+ retval = count + 1;
+ break;
+
+ default :
+ dbg("%s - unsupported (at this time) write type", __FUNCTION__);
+ retval = -EINVAL;
+ break;
+ }
+
+exit:
+ kfree (temp_buffer);
+
+ return retval;
+}
+
+
+static int bluetooth_write_room (struct tty_struct *tty)
+{
+ dbg("%s", __FUNCTION__);
+
+ /*
+ * 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 bluetooth_chars_in_buffer (struct tty_struct *tty)
+{
+ dbg("%s", __FUNCTION__);
+
+ /*
+ * 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 bluetooth_throttle (struct tty_struct * tty)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__);
+
+ if (!bluetooth) {
+ return;
+ }
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ return;
+ }
+
+ dbg("%s unsupported (at this time)", __FUNCTION__);
+
+ 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("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ return;
+ }
+
+ dbg("%s unsupported (at this time)", __FUNCTION__);
+}
+
+
+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("%s - cmd 0x%.4x", __FUNCTION__, cmd);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ 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("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ 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("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ return;
+ }
+
+ if (bluetooth->read_urb) {
+ usb_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 ("%s - failed submitting read urb, error %d", __FUNCTION__, 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("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ return;
+ }
+
+ if ((bluetooth->read_urb) && (bluetooth->read_urb->actual_length))
+ usb_kill_urb(bluetooth->read_urb);
+}
+#endif
+
+
+/*****************************************************************************
+ * urb callback functions
+ *****************************************************************************/
+
+
+static void bluetooth_int_callback (struct urb *urb, struct pt_regs *regs)
+{
+ 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;
+ int status;
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth) {
+ dbg("%s - bad bluetooth pointer, exiting", __FUNCTION__);
+ return;
+ }
+
+ 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;
+ }
+
+ if (!count) {
+ dbg("%s - zero length int", __FUNCTION__);
+ goto exit;
+ }
+
+
+#ifdef DEBUG
+ if (count) {
+ printk (KERN_DEBUG __FILE__ ": %s- length = %d, data = ", __FUNCTION__, 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;
+ goto exit;
+ }
+#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("%s - exceeded EVENT_BUFFER_SIZE", __FUNCTION__);
+ bluetooth->int_packet_pos = 0;
+ goto exit;
+ }
+
+ 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
+ goto exit;
+
+ if (packet_size + EVENT_HDR_SIZE < bluetooth->int_packet_pos) {
+ err("%s - packet was too long", __FUNCTION__);
+ bluetooth->int_packet_pos = 0;
+ goto exit;
+ }
+
+ 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;
+ }
+
+exit:
+ status = usb_submit_urb (urb, GFP_ATOMIC);
+ if (status)
+ err ("%s - usb_submit_urb failed with result %d",
+ __FUNCTION__, status);
+}
+
+
+static void bluetooth_ctrl_callback (struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)urb->context, __FUNCTION__);
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth) {
+ dbg("%s - bad bluetooth pointer, exiting", __FUNCTION__);
+ return;
+ }
+
+ if (urb->status) {
+ dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
+ return;
+ }
+}
+
+
+static void bluetooth_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
+{
+ 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("%s", __FUNCTION__);
+
+ if (!bluetooth) {
+ dbg("%s - bad bluetooth pointer, exiting", __FUNCTION__);
+ return;
+ }
+
+ if (urb->status) {
+ dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
+ if (urb->status == -ENOENT) {
+ dbg("%s - URB canceled, won't reschedule", __FUNCTION__);
+ return;
+ }
+ goto exit;
+ }
+
+ if (!count) {
+ dbg("%s - zero length read bulk", __FUNCTION__);
+ goto exit;
+ }
+
+#ifdef DEBUG
+ if (count) {
+ printk (KERN_DEBUG __FILE__ ": %s- length = %d, data = ", __FUNCTION__, 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;
+ usb_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 ("%s - failed resubmitting read urb, error %d", __FUNCTION__, 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("%s - exceeded ACL_BUFFER_SIZE", __FUNCTION__);
+ 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("%s - packet was too long", __FUNCTION__);
+ 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;
+
+ usb_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 ("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
+
+ return;
+}
+
+
+static void bluetooth_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)urb->context, __FUNCTION__);
+
+ dbg("%s", __FUNCTION__);
+
+ /* free up the transfer buffer, as usb_free_urb() does not do this */
+ kfree(urb->transfer_buffer);
+
+ if (!bluetooth) {
+ dbg("%s - bad bluetooth pointer, exiting", __FUNCTION__);
+ return;
+ }
+
+ if (urb->status) {
+ dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
+ return;
+ }
+
+ /* wake up our little function to let the tty layer know that something happened */
+ schedule_work(&bluetooth->work);
+}
+
+
+static void bluetooth_softint(void *private)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)private, __FUNCTION__);
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth)
+ return;
+
+ tty_wakeup(bluetooth->tty);
+}
+
+
+static int usb_bluetooth_probe (struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev (intf);
+ struct usb_bluetooth *bluetooth = NULL;
+ struct usb_host_interface *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 = intf->cur_altsetting;
+ control_out_endpoint = interface->desc.bInterfaceNumber;
+
+ /* find the endpoints that we need */
+ for (i = 0; i < interface->desc.bNumEndpoints; ++i) {
+ endpoint = &interface->endpoint[i].desc;
+
+ 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 ("%s - improper number of endpoints. Bluetooth driver not bound.", __FUNCTION__);
+ return -EIO;
+ }
+
+ 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");
+ return -ENODEV;
+ }
+
+ if (!(bluetooth = kmalloc(sizeof(struct usb_bluetooth), GFP_KERNEL))) {
+ err("Out of memory");
+ return -ENOMEM;
+ }
+
+ memset(bluetooth, 0, sizeof(struct usb_bluetooth));
+
+ bluetooth->magic = USB_BLUETOOTH_MAGIC;
+ bluetooth->dev = dev;
+ bluetooth->minor = minor;
+ INIT_WORK(&bluetooth->work, bluetooth_softint, 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 = le16_to_cpu(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;
+ }
+ usb_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;
+ bluetooth->bulk_out_buffer_size = le16_to_cpu(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 = le16_to_cpu(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;
+ }
+ usb_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_device (bluetooth_tty_driver, minor, &intf->dev);
+ info("Bluetooth converter now attached to ttyUB%d (or usb/ttub/%d for devfs)", minor, minor);
+
+ bluetooth_table[minor] = bluetooth;
+
+ /* success */
+ usb_set_intfdata (intf, bluetooth);
+ return 0;
+
+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_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);
+ return -EIO;
+}
+
+
+static void usb_bluetooth_disconnect(struct usb_interface *intf)
+{
+ struct usb_bluetooth *bluetooth = usb_get_intfdata (intf);
+ int i;
+
+ usb_set_intfdata (intf, NULL);
+ if (bluetooth) {
+ if ((bluetooth->open_count) && (bluetooth->tty))
+ tty_hangup(bluetooth->tty);
+
+ bluetooth->open_count = 0;
+
+ if (bluetooth->read_urb) {
+ usb_kill_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_kill_urb (bluetooth->interrupt_in_urb);
+ usb_free_urb (bluetooth->interrupt_in_urb);
+ }
+ if (bluetooth->interrupt_in_buffer)
+ kfree (bluetooth->interrupt_in_buffer);
+
+ tty_unregister_device (bluetooth_tty_driver, bluetooth->minor);
+
+ for (i = 0; i < NUM_CONTROL_URBS; ++i) {
+ if (bluetooth->control_urb_pool[i]) {
+ usb_kill_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");
+ }
+}
+
+static struct tty_operations bluetooth_ops = {
+ .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,
+};
+
+static int usb_bluetooth_init(void)
+{
+ int i;
+ int result;
+
+ /* Initialize our global data */
+ for (i = 0; i < BLUETOOTH_TTY_MINORS; ++i) {
+ bluetooth_table[i] = NULL;
+ }
+
+ info ("USB Bluetooth support registered");
+
+ bluetooth_tty_driver = alloc_tty_driver(BLUETOOTH_TTY_MINORS);
+ if (!bluetooth_tty_driver)
+ return -ENOMEM;
+
+ bluetooth_tty_driver->owner = THIS_MODULE;
+ bluetooth_tty_driver->driver_name = "usb-bluetooth";
+ bluetooth_tty_driver->name = "ttyUB";
+ bluetooth_tty_driver->devfs_name = "usb/ttub/";
+ bluetooth_tty_driver->major = BLUETOOTH_TTY_MAJOR;
+ bluetooth_tty_driver->minor_start = 0;
+ bluetooth_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
+ bluetooth_tty_driver->subtype = SERIAL_TYPE_NORMAL;
+ bluetooth_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+ bluetooth_tty_driver->init_termios = tty_std_termios;
+ bluetooth_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ tty_set_operations(bluetooth_tty_driver, &bluetooth_ops);
+ if (tty_register_driver (bluetooth_tty_driver)) {
+ err("%s - failed to register tty driver", __FUNCTION__);
+ put_tty_driver(bluetooth_tty_driver);
+ return -1;
+ }
+
+ /* register the USB driver */
+ result = usb_register(&usb_bluetooth_driver);
+ if (result < 0) {
+ tty_unregister_driver(bluetooth_tty_driver);
+ put_tty_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;
+}
+
+
+static void usb_bluetooth_exit(void)
+{
+ usb_deregister(&usb_bluetooth_driver);
+ tty_unregister_driver(bluetooth_tty_driver);
+ put_tty_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");
+