patch-2.4.10 linux/drivers/bluetooth/hci_emu.c

• Lines: 331
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.9/linux/drivers/bluetooth/hci_emu.c
• Orig date: Mon Aug 27 12:41:40 2001

diff -u --recursive --new-file v2.4.9/linux/drivers/bluetooth/hci_emu.c linux/drivers/bluetooth/hci_emu.c
@@ -1,330 +0,0 @@
-/* 
-   BlueZ - Bluetooth protocol stack for Linux
-   Copyright (C) 2000-2001 Qualcomm Incorporated
-
-   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License version 2 as
-   published by the Free Software Foundation;
-
-   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
-   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
-   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 
-   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 
-   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 
-   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 
-   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 
-   SOFTWARE IS DISCLAIMED.
-*/
-
-/*
- * BlueZ HCI virtual device driver.
- *
- * $Id: hci_emu.c,v 1.1 2001/06/01 08:12:10 davem Exp $ 
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/poll.h>
-#include <linux/fcntl.h>
-#include <linux/init.h>
-#include <linux/random.h>
-
-#include <linux/skbuff.h>
-#include <linux/miscdevice.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-#include <net/bluetooth/bluetooth.h>
-#include <net/bluetooth/bluez.h>
-#include <net/bluetooth/hci_core.h>
-#include <net/bluetooth/hci_emu.h>
-
-/* HCI device part */
-
-int hci_emu_open(struct hci_dev *hdev)
-{
-	hdev->flags |= HCI_RUNNING;
-	return 0;
-}
-
-int hci_emu_flush(struct hci_dev *hdev)
-{
-	struct hci_emu_struct *hci_emu = (struct hci_emu_struct *) hdev->driver_data;
-	bluez_skb_queue_purge(&hci_emu->readq);
-	return 0;
-}
-
-int hci_emu_close(struct hci_dev *hdev)
-{
-	hdev->flags &= ~HCI_RUNNING;
-	hci_emu_flush(hdev);
-	return 0;
-}
-
-int hci_emu_send_frame(struct sk_buff *skb)
-{
-	struct hci_dev* hdev = (struct hci_dev *) skb->dev;
-	struct hci_emu_struct *hci_emu;
-
-	if (!hdev) {
-		ERR("Frame for uknown device (hdev=NULL)");
-		return -ENODEV;
-	}
-
-	if (!(hdev->flags & HCI_RUNNING))
-		return -EBUSY;
-
-	hci_emu = (struct hci_emu_struct *) hdev->driver_data;
-
-	memcpy(skb_push(skb, 1), &skb->pkt_type, 1);
-	skb_queue_tail(&hci_emu->readq, skb);
-
-	if (hci_emu->flags & HCI_EMU_FASYNC)
-		kill_fasync(&hci_emu->fasync, SIGIO, POLL_IN);
-	wake_up_interruptible(&hci_emu->read_wait);
-
-	return 0;
-}
-
-/* Character device part */
-
-/* Poll */
-static unsigned int hci_emu_chr_poll(struct file *file, poll_table * wait)
-{  
-	struct hci_emu_struct *hci_emu = (struct hci_emu_struct *) file->private_data;
-
-	poll_wait(file, &hci_emu->read_wait, wait);
- 
-	if (skb_queue_len(&hci_emu->readq))
-		return POLLIN | POLLRDNORM;
-
-	return POLLOUT | POLLWRNORM;
-}
-
-/* Get packet from user space buffer(already verified) */
-static __inline__ ssize_t hci_emu_get_user(struct hci_emu_struct *hci_emu, const char *buf, size_t count)
-{
-	struct sk_buff *skb;
-
-	if (count > HCI_EMU_MAX_FRAME)
-		return -EINVAL;
-
-	if (!(skb = bluez_skb_alloc(count, GFP_KERNEL)))
-		return -ENOMEM;
-	
-	copy_from_user(skb_put(skb, count), buf, count); 
-
-	skb->dev = (void *) &hci_emu->hdev;
-	skb->pkt_type = *((__u8 *) skb->data);
-	skb_pull(skb, 1);
-
-	hci_recv_frame(skb);
-
-	return count;
-} 
-
-/* Write */
-static ssize_t hci_emu_chr_write(struct file * file, const char * buf, 
-			     size_t count, loff_t *pos)
-{
-	struct hci_emu_struct *hci_emu = (struct hci_emu_struct *) file->private_data;
-
-	if (verify_area(VERIFY_READ, buf, count))
-		return -EFAULT;
-
-	return hci_emu_get_user(hci_emu, buf, count);
-}
-
-/* Put packet to user space buffer(already verified) */
-static __inline__ ssize_t hci_emu_put_user(struct hci_emu_struct *hci_emu,
-				       struct sk_buff *skb, char *buf, int count)
-{
-	int len = count, total = 0;
-	char *ptr = buf;
-
-	len = MIN(skb->len, len); 
-	copy_to_user(ptr, skb->data, len); 
-	total += len;
-
-	hci_emu->hdev.stat.byte_tx += len;
-	switch (skb->pkt_type) {
-		case HCI_COMMAND_PKT:
-			hci_emu->hdev.stat.cmd_tx++;
-			break;
-
-		case HCI_ACLDATA_PKT:
-			hci_emu->hdev.stat.acl_tx++;
-			break;
-
-		case HCI_SCODATA_PKT:
-			hci_emu->hdev.stat.cmd_tx++;
-			break;
-	};
-
-	return total;
-}
-
-/* Read */
-static ssize_t hci_emu_chr_read(struct file * file, char * buf, size_t count, loff_t *pos)
-{
-	struct hci_emu_struct *hci_emu = (struct hci_emu_struct *) file->private_data;
-	DECLARE_WAITQUEUE(wait, current);
-	struct sk_buff *skb;
-	ssize_t ret = 0;
-
-	add_wait_queue(&hci_emu->read_wait, &wait);
-	while (count) {
-		current->state = TASK_INTERRUPTIBLE;
-
-		/* Read frames from device queue */
-		if (!(skb = skb_dequeue(&hci_emu->readq))) {
-			if (file->f_flags & O_NONBLOCK) {
-				ret = -EAGAIN;
-				break;
-			}
-			if (signal_pending(current)) {
-				ret = -ERESTARTSYS;
-				break;
-			}
-
-			/* Nothing to read, let's sleep */
-			schedule();
-			continue;
-		}
-
-		if (!verify_area(VERIFY_WRITE, buf, count))
-			ret = hci_emu_put_user(hci_emu, skb, buf, count);
-		else
-			ret = -EFAULT;
-
-		bluez_skb_free(skb);
-		break;
-	}
-
-	current->state = TASK_RUNNING;
-	remove_wait_queue(&hci_emu->read_wait, &wait);
-
-	return ret;
-}
-
-static int hci_emu_chr_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
-{
-	return -EINVAL;
-}
-
-static int hci_emu_chr_fasync(int fd, struct file *file, int on)
-{
-	struct hci_emu_struct *hci_emu = (struct hci_emu_struct *) file->private_data;
-	int ret;
-
-	if ((ret = fasync_helper(fd, file, on, &hci_emu->fasync)) < 0)
-		return ret; 
- 
-	if (on)
-		hci_emu->flags |= HCI_EMU_FASYNC;
-	else 
-		hci_emu->flags &= ~HCI_EMU_FASYNC;
-
-	return 0;
-}
-
-static int hci_emu_chr_open(struct inode *inode, struct file * file)
-{
-	struct hci_emu_struct *hci_emu = NULL; 
-	struct hci_dev *hdev;
-
-	if (!(hci_emu = kmalloc(sizeof(struct hci_emu_struct), GFP_KERNEL)))
-		return -ENOMEM;
-
-	memset(hci_emu, 0, sizeof(struct hci_emu_struct));
-
-	skb_queue_head_init(&hci_emu->readq);
-	init_waitqueue_head(&hci_emu->read_wait);
-
-	/* Initialize and register HCI device */
-	hdev = &hci_emu->hdev;
-
-	hdev->type = HCI_EMU;
-	hdev->driver_data = hci_emu;
-
-	hdev->open  = hci_emu_open;
-	hdev->close = hci_emu_close;
-	hdev->flush = hci_emu_flush;
-	hdev->send  = hci_emu_send_frame;
-
-	if (hci_register_dev(hdev) < 0) {
-		kfree(hci_emu);
-		return -EBUSY;
-	}
-
-	file->private_data = hci_emu;
-	return 0;   
-}
-
-static int hci_emu_chr_close(struct inode *inode, struct file *file)
-{
-	struct hci_emu_struct *hci_emu = (struct hci_emu_struct *) file->private_data;
-
-	if (hci_unregister_dev(&hci_emu->hdev) < 0) {
-		ERR("Can't unregister HCI device %s", hci_emu->hdev.name);
-	}
-
-	kfree(hci_emu);
-	file->private_data = NULL;
-
-	return 0;
-}
-
-static struct file_operations hci_emu_fops = {
-	owner:	THIS_MODULE,	
-	llseek:	no_llseek,
-	read:	hci_emu_chr_read,
-	write:	hci_emu_chr_write,
-	poll:	hci_emu_chr_poll,
-	ioctl:	hci_emu_chr_ioctl,
-	open:	hci_emu_chr_open,
-	release:hci_emu_chr_close,
-	fasync:	hci_emu_chr_fasync		
-};
-
-static struct miscdevice hci_emu_miscdev=
-{
-        HCI_EMU_MINOR,
-        "hci_emu",
-        &hci_emu_fops
-};
-
-int __init hci_emu_init(void)
-{
-	INF("BlueZ HCI EMU driver ver %s Copyright (C) 2000,2001 Qualcomm Inc",  
-		BLUEZ_VER);
-	INF("Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>");
-
-	if (misc_register(&hci_emu_miscdev)) {
-		ERR("Can't register misc device %d\n", HCI_EMU_MINOR);
-		return -EIO;
-	}
-
-	return 0;
-}
-
-void hci_emu_cleanup(void)
-{
-	misc_deregister(&hci_emu_miscdev);
-}
-
-module_init(hci_emu_init);
-module_exit(hci_emu_cleanup);