litmus-rt.git - The LITMUS^RT kernel.

The LITMUS^RT kernel.

Bjoern Brandenburg

about summary refs log tree commit diff stats

diff options

author	Richard Purdie <rpurdie@rpsys.net>	2005-09-09 13:54:04 -0400
committer	Russell King <rmk+kernel@arm.linux.org.uk>	2005-09-09 13:54:04 -0400
commit	daad56661d56cc382948fc95b74e17d3326b901b (patch)
tree	9c3b5195646882044f39baef859621cc27510de5 /include/asm-arm/suspend.h
parent	aa6c2e794f7e1f54dc52c84471c750327fa21ccd (diff)

[ARM] 2894/1: Sharp Scoop driver pm_message_t type fix

Patch from Richard Purdie Fix a pm_message_t type warning in the Sharp scoop driver Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Diffstat (limited to 'include/asm-arm/suspend.h')

0 files changed, 0 insertions, 0 deletions

23120e0d6'>36acbb1adadf

3
4

5
6
7

26
27

31
32
33

39
40

44
45

53
54

56
57

59
60
61

66
67
68

71
72
73

81
82

84
85

87
88

114
115

130
131

136
137
138

140
141

143
144

147
148

164
165

168
169
170

180
181

196
197

202
203

219
220

221
222

223
224

225
226

228
229

231
232
233

239
240
241

258
259

262
263

266
267
268

276
277
278

279
280

282
283

285
286
287

288
289

295
296

300
301

302
303
304

305
306
307

309
310
311

/*
 *
 *  Bluetooth virtual HCI driver
 *
 *  Copyright (C) 2000-2001  Qualcomm Incorporated
 *  Copyright (C) 2002-2003  Maxim Krasnyansky <maxk@qualcomm.com>
 *  Copyright (C) 2004-2006  Marcel Holtmann <marcel@holtmann.org>
 *
 *
 *  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/module.h>

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/poll.h>

#include <linux/skbuff.h>
#include <linux/miscdevice.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#define VERSION "1.3"

static bool amp;

struct vhci_data {
	struct hci_dev *hdev;

	unsigned long flags;

	wait_queue_head_t read_wait;
	struct sk_buff_head readq;
};

static int vhci_open_dev(struct hci_dev *hdev)
{
	set_bit(HCI_RUNNING, &hdev->flags);

	return 0;
}

static int vhci_close_dev(struct hci_dev *hdev)
{
	struct vhci_data *data = hci_get_drvdata(hdev);

	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
		return 0;

	skb_queue_purge(&data->readq);

	return 0;
}

static int vhci_flush(struct hci_dev *hdev)
{
	struct vhci_data *data = hci_get_drvdata(hdev);

	skb_queue_purge(&data->readq);

	return 0;
}

static int vhci_send_frame(struct sk_buff *skb)
{
	struct hci_dev* hdev = (struct hci_dev *) skb->dev;
	struct vhci_data *data;

	if (!hdev) {
		BT_ERR("Frame for unknown HCI device (hdev=NULL)");
		return -ENODEV;
	}

	if (!test_bit(HCI_RUNNING, &hdev->flags))
		return -EBUSY;

	data = hci_get_drvdata(hdev);

	memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
	skb_queue_tail(&data->readq, skb);

	wake_up_interruptible(&data->read_wait);

	return 0;
}

static inline ssize_t vhci_get_user(struct vhci_data *data,
					const char __user *buf, size_t count)
{
	struct sk_buff *skb;

	if (count > HCI_MAX_FRAME_SIZE)
		return -EINVAL;

	skb = bt_skb_alloc(count, GFP_KERNEL);
	if (!skb)
		return -ENOMEM;

	if (copy_from_user(skb_put(skb, count), buf, count)) {
		kfree_skb(skb);
		return -EFAULT;
	}

	skb->dev = (void *) data->hdev;
	bt_cb(skb)->pkt_type = *((__u8 *) skb->data);
	skb_pull(skb, 1);

	hci_recv_frame(skb);

	return count;
}

static inline ssize_t vhci_put_user(struct vhci_data *data,
			struct sk_buff *skb, char __user *buf, int count)
{
	char __user *ptr = buf;
	int len, total = 0;

	len = min_t(unsigned int, skb->len, count);

	if (copy_to_user(ptr, skb->data, len))
		return -EFAULT;

	total += len;

	data->hdev->stat.byte_tx += len;

	switch (bt_cb(skb)->pkt_type) {
	case HCI_COMMAND_PKT:
		data->hdev->stat.cmd_tx++;
		break;

	case HCI_ACLDATA_PKT:
		data->hdev->stat.acl_tx++;
		break;

	case HCI_SCODATA_PKT:
		data->hdev->stat.sco_tx++;
		break;
	}

	return total;
}

static ssize_t vhci_read(struct file *file,
				char __user *buf, size_t count, loff_t *pos)
{
	struct vhci_data *data = file->private_data;
	struct sk_buff *skb;
	ssize_t ret = 0;

	while (count) {
		skb = skb_dequeue(&data->readq);
		if (skb) {
			ret = vhci_put_user(data, skb, buf, count);
			if (ret < 0)
				skb_queue_head(&data->readq, skb);
			else
				kfree_skb(skb);
			break;
		}

		if (file->f_flags & O_NONBLOCK) {
			ret = -EAGAIN;
			break;
		}

		ret = wait_event_interruptible(data->read_wait,
					!skb_queue_empty(&data->readq));
		if (ret < 0)
			break;
	}

	return ret;
}

static ssize_t vhci_write(struct file *file,
			const char __user *buf, size_t count, loff_t *pos)
{
	struct vhci_data *data = file->private_data;

	return vhci_get_user(data, buf, count);
}

static unsigned int vhci_poll(struct file *file, poll_table *wait)
{
	struct vhci_data *data = file->private_data;

	poll_wait(file, &data->read_wait, wait);

	if (!skb_queue_empty(&data->readq))
		return POLLIN | POLLRDNORM;

	return POLLOUT | POLLWRNORM;
}

static int vhci_open(struct inode *inode, struct file *file)
{
	struct vhci_data *data;
	struct hci_dev *hdev;

	data = kzalloc(sizeof(struct vhci_data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	skb_queue_head_init(&data->readq);
	init_waitqueue_head(&data->read_wait);

	hdev = hci_alloc_dev();
	if (!hdev) {
		kfree(data);
		return -ENOMEM;
	}

	data->hdev = hdev;

	hdev->bus = HCI_VIRTUAL;
	hci_set_drvdata(hdev, data);

	if (amp)
		hdev->dev_type = HCI_AMP;

	hdev->open     = vhci_open_dev;
	hdev->close    = vhci_close_dev;
	hdev->flush    = vhci_flush;
	hdev->send     = vhci_send_frame;

	if (hci_register_dev(hdev) < 0) {
		BT_ERR("Can't register HCI device");
		kfree(data);
		hci_free_dev(hdev);
		return -EBUSY;
	}

	file->private_data = data;
	nonseekable_open(inode, file);

	return 0;
}

static int vhci_release(struct inode *inode, struct file *file)
{
	struct vhci_data *data = file->private_data;
	struct hci_dev *hdev = data->hdev;

	hci_unregister_dev(hdev);
	hci_free_dev(hdev);

	file->private_data = NULL;
	kfree(data);

	return 0;
}

static const struct file_operations vhci_fops = {
	.owner		= THIS_MODULE,
	.read		= vhci_read,
	.write		= vhci_write,
	.poll		= vhci_poll,
	.open		= vhci_open,
	.release	= vhci_release,
	.llseek		= no_llseek,
};

static struct miscdevice vhci_miscdev= {
	.name	= "vhci",
	.fops	= &vhci_fops,
	.minor	= MISC_DYNAMIC_MINOR,
};

static int __init vhci_init(void)
{
	BT_INFO("Virtual HCI driver ver %s", VERSION);

	return misc_register(&vhci_miscdev);
}

static void __exit vhci_exit(void)
{
	misc_deregister(&vhci_miscdev);
}

module_init(vhci_init);
module_exit(vhci_exit);

module_param(amp, bool, 0644);
MODULE_PARM_DESC(amp, "Create AMP controller device");

MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth virtual HCI driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");


context:
space:
mode: