[mirror_ubuntu-jammy-kernel.git] / net / bluetooth / hci_sysfs.c

/* Bluetooth HCI driver model support. */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>

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

static struct class *bt_class;

struct dentry *bt_debugfs;
EXPORT_SYMBOL_GPL(bt_debugfs);

static inline char *link_typetostr(int type)
{
	switch (type) {
	case ACL_LINK:
		return "ACL";
	case SCO_LINK:
		return "SCO";
	case ESCO_LINK:
		return "eSCO";
	case LE_LINK:
		return "LE";
	default:
		return "UNKNOWN";
	}
}

static ssize_t show_link_type(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_conn *conn = dev_get_drvdata(dev);
	return sprintf(buf, "%s\n", link_typetostr(conn->type));
}

static ssize_t show_link_address(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_conn *conn = dev_get_drvdata(dev);
	return sprintf(buf, "%s\n", batostr(&conn->dst));
}

static ssize_t show_link_features(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_conn *conn = dev_get_drvdata(dev);

	return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
				conn->features[0], conn->features[1],
				conn->features[2], conn->features[3],
				conn->features[4], conn->features[5],
				conn->features[6], conn->features[7]);
}

#define LINK_ATTR(_name, _mode, _show, _store) \
struct device_attribute link_attr_##_name = __ATTR(_name, _mode, _show, _store)

static LINK_ATTR(type, S_IRUGO, show_link_type, NULL);
static LINK_ATTR(address, S_IRUGO, show_link_address, NULL);
static LINK_ATTR(features, S_IRUGO, show_link_features, NULL);

static struct attribute *bt_link_attrs[] = {
	&link_attr_type.attr,
	&link_attr_address.attr,
	&link_attr_features.attr,
	NULL
};

static struct attribute_group bt_link_group = {
	.attrs = bt_link_attrs,
};

static const struct attribute_group *bt_link_groups[] = {
	&bt_link_group,
	NULL
};

static void bt_link_release(struct device *dev)
{
	void *data = dev_get_drvdata(dev);
	kfree(data);
}

static struct device_type bt_link = {
	.name    = "link",
	.groups  = bt_link_groups,
	.release = bt_link_release,
};

static void add_conn(struct work_struct *work)
{
	struct hci_conn *conn = container_of(work, struct hci_conn, work_add);
	struct hci_dev *hdev = conn->hdev;

	dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);

	dev_set_drvdata(&conn->dev, conn);

	if (device_add(&conn->dev) < 0) {
		BT_ERR("Failed to register connection device");
		return;
	}

	hci_dev_hold(hdev);
}

/*
 * The rfcomm tty device will possibly retain even when conn
 * is down, and sysfs doesn't support move zombie device,
 * so we should move the device before conn device is destroyed.
 */
static int __match_tty(struct device *dev, void *data)
{
	return !strncmp(dev_name(dev), "rfcomm", 6);
}

static void del_conn(struct work_struct *work)
{
	struct hci_conn *conn = container_of(work, struct hci_conn, work_del);
	struct hci_dev *hdev = conn->hdev;

	if (!device_is_registered(&conn->dev))
		return;

	while (1) {
		struct device *dev;

		dev = device_find_child(&conn->dev, NULL, __match_tty);
		if (!dev)
			break;
		device_move(dev, NULL, DPM_ORDER_DEV_LAST);
		put_device(dev);
	}

	device_del(&conn->dev);
	put_device(&conn->dev);

	hci_dev_put(hdev);
}

void hci_conn_init_sysfs(struct hci_conn *conn)
{
	struct hci_dev *hdev = conn->hdev;

	BT_DBG("conn %p", conn);

	conn->dev.type = &bt_link;
	conn->dev.class = bt_class;
	conn->dev.parent = &hdev->dev;

	device_initialize(&conn->dev);

	INIT_WORK(&conn->work_add, add_conn);
	INIT_WORK(&conn->work_del, del_conn);
}

void hci_conn_add_sysfs(struct hci_conn *conn)
{
	BT_DBG("conn %p", conn);

	queue_work(conn->hdev->workqueue, &conn->work_add);
}

void hci_conn_del_sysfs(struct hci_conn *conn)
{
	BT_DBG("conn %p", conn);

	queue_work(conn->hdev->workqueue, &conn->work_del);
}

static inline char *host_bustostr(int bus)
{
	switch (bus) {
	case HCI_VIRTUAL:
		return "VIRTUAL";
	case HCI_USB:
		return "USB";
	case HCI_PCCARD:
		return "PCCARD";
	case HCI_UART:
		return "UART";
	case HCI_RS232:
		return "RS232";
	case HCI_PCI:
		return "PCI";
	case HCI_SDIO:
		return "SDIO";
	default:
		return "UNKNOWN";
	}
}

static inline char *host_typetostr(int type)
{
	switch (type) {
	case HCI_BREDR:
		return "BR/EDR";
	case HCI_AMP:
		return "AMP";
	default:
		return "UNKNOWN";
	}
}

static ssize_t show_bus(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	return sprintf(buf, "%s\n", host_bustostr(hdev->bus));
}

static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	return sprintf(buf, "%s\n", host_typetostr(hdev->dev_type));
}

static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	char name[HCI_MAX_NAME_LENGTH + 1];
	int i;

	for (i = 0; i < HCI_MAX_NAME_LENGTH; i++)
		name[i] = hdev->dev_name[i];

	name[HCI_MAX_NAME_LENGTH] = '\0';
	return sprintf(buf, "%s\n", name);
}

static ssize_t show_class(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	return sprintf(buf, "0x%.2x%.2x%.2x\n",
			hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
}

static ssize_t show_address(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	return sprintf(buf, "%s\n", batostr(&hdev->bdaddr));
}

static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);

	return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
				hdev->features[0], hdev->features[1],
				hdev->features[2], hdev->features[3],
				hdev->features[4], hdev->features[5],
				hdev->features[6], hdev->features[7]);
}

static ssize_t show_manufacturer(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	return sprintf(buf, "%d\n", hdev->manufacturer);
}

static ssize_t show_hci_version(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	return sprintf(buf, "%d\n", hdev->hci_ver);
}

static ssize_t show_hci_revision(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	return sprintf(buf, "%d\n", hdev->hci_rev);
}

static ssize_t show_idle_timeout(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	return sprintf(buf, "%d\n", hdev->idle_timeout);
}

static ssize_t store_idle_timeout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	unsigned int val;
	int rv;

	rv = kstrtouint(buf, 0, &val);
	if (rv < 0)
		return rv;

	if (val != 0 && (val < 500 || val > 3600000))
		return -EINVAL;

	hdev->idle_timeout = val;

	return count;
}

static ssize_t show_sniff_max_interval(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	return sprintf(buf, "%d\n", hdev->sniff_max_interval);
}

static ssize_t store_sniff_max_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	u16 val;
	int rv;

	rv = kstrtou16(buf, 0, &val);
	if (rv < 0)
		return rv;

	if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
		return -EINVAL;

	hdev->sniff_max_interval = val;

	return count;
}

static ssize_t show_sniff_min_interval(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	return sprintf(buf, "%d\n", hdev->sniff_min_interval);
}

static ssize_t store_sniff_min_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	u16 val;
	int rv;

	rv = kstrtou16(buf, 0, &val);
	if (rv < 0)
		return rv;

	if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
		return -EINVAL;

	hdev->sniff_min_interval = val;

	return count;
}

static DEVICE_ATTR(bus, S_IRUGO, show_bus, NULL);
static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
static DEVICE_ATTR(class, S_IRUGO, show_class, NULL);
static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
static DEVICE_ATTR(features, S_IRUGO, show_features, NULL);
static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL);
static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL);
static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL);

static DEVICE_ATTR(idle_timeout, S_IRUGO | S_IWUSR,
				show_idle_timeout, store_idle_timeout);
static DEVICE_ATTR(sniff_max_interval, S_IRUGO | S_IWUSR,
				show_sniff_max_interval, store_sniff_max_interval);
static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR,
				show_sniff_min_interval, store_sniff_min_interval);

static struct attribute *bt_host_attrs[] = {
	&dev_attr_bus.attr,
	&dev_attr_type.attr,
	&dev_attr_name.attr,
	&dev_attr_class.attr,
	&dev_attr_address.attr,
	&dev_attr_features.attr,
	&dev_attr_manufacturer.attr,
	&dev_attr_hci_version.attr,
	&dev_attr_hci_revision.attr,
	&dev_attr_idle_timeout.attr,
	&dev_attr_sniff_max_interval.attr,
	&dev_attr_sniff_min_interval.attr,
	NULL
};

static struct attribute_group bt_host_group = {
	.attrs = bt_host_attrs,
};

static const struct attribute_group *bt_host_groups[] = {
	&bt_host_group,
	NULL
};

static void bt_host_release(struct device *dev)
{
	void *data = dev_get_drvdata(dev);
	kfree(data);
}

static struct device_type bt_host = {
	.name    = "host",
	.groups  = bt_host_groups,
	.release = bt_host_release,
};

static int inquiry_cache_show(struct seq_file *f, void *p)
{
	struct hci_dev *hdev = f->private;
	struct inquiry_cache *cache = &hdev->inq_cache;
	struct inquiry_entry *e;

	hci_dev_lock_bh(hdev);

	for (e = cache->list; e; e = e->next) {
		struct inquiry_data *data = &e->data;
		seq_printf(f, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
			   batostr(&data->bdaddr),
			   data->pscan_rep_mode, data->pscan_period_mode,
			   data->pscan_mode, data->dev_class[2],
			   data->dev_class[1], data->dev_class[0],
			   __le16_to_cpu(data->clock_offset),
			   data->rssi, data->ssp_mode, e->timestamp);
	}

	hci_dev_unlock_bh(hdev);

	return 0;
}

static int inquiry_cache_open(struct inode *inode, struct file *file)
{
	return single_open(file, inquiry_cache_show, inode->i_private);
}

static const struct file_operations inquiry_cache_fops = {
	.open		= inquiry_cache_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

static int blacklist_show(struct seq_file *f, void *p)
{
	struct hci_dev *hdev = f->private;
	struct list_head *l;

	hci_dev_lock_bh(hdev);

	list_for_each(l, &hdev->blacklist) {
		struct bdaddr_list *b;

		b = list_entry(l, struct bdaddr_list, list);

		seq_printf(f, "%s\n", batostr(&b->bdaddr));
	}

	hci_dev_unlock_bh(hdev);

	return 0;
}

static int blacklist_open(struct inode *inode, struct file *file)
{
	return single_open(file, blacklist_show, inode->i_private);
}

static const struct file_operations blacklist_fops = {
	.open		= blacklist_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

static void print_bt_uuid(struct seq_file *f, u8 *uuid)
{
	u32 data0, data4;
	u16 data1, data2, data3, data5;

	memcpy(&data0, &uuid[0], 4);
	memcpy(&data1, &uuid[4], 2);
	memcpy(&data2, &uuid[6], 2);
	memcpy(&data3, &uuid[8], 2);
	memcpy(&data4, &uuid[10], 4);
	memcpy(&data5, &uuid[14], 2);

	seq_printf(f, "%.8x-%.4x-%.4x-%.4x-%.8x%.4x\n",
				ntohl(data0), ntohs(data1), ntohs(data2),
				ntohs(data3), ntohl(data4), ntohs(data5));
}

static int uuids_show(struct seq_file *f, void *p)
{
	struct hci_dev *hdev = f->private;
	struct list_head *l;

	hci_dev_lock_bh(hdev);

	list_for_each(l, &hdev->uuids) {
		struct bt_uuid *uuid;

		uuid = list_entry(l, struct bt_uuid, list);

		print_bt_uuid(f, uuid->uuid);
	}

	hci_dev_unlock_bh(hdev);

	return 0;
}

static int uuids_open(struct inode *inode, struct file *file)
{
	return single_open(file, uuids_show, inode->i_private);
}

static const struct file_operations uuids_fops = {
	.open		= uuids_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

static int auto_accept_delay_set(void *data, u64 val)
{
	struct hci_dev *hdev = data;

	hci_dev_lock_bh(hdev);

	hdev->auto_accept_delay = val;

	hci_dev_unlock_bh(hdev);

	return 0;
}

static int auto_accept_delay_get(void *data, u64 *val)
{
	struct hci_dev *hdev = data;

	hci_dev_lock_bh(hdev);

	*val = hdev->auto_accept_delay;

	hci_dev_unlock_bh(hdev);

	return 0;
}

DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
					auto_accept_delay_set, "%llu\n");

int hci_register_sysfs(struct hci_dev *hdev)
{
	struct device *dev = &hdev->dev;
	int err;

	BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);

	dev->type = &bt_host;
	dev->class = bt_class;
	dev->parent = hdev->parent;

	dev_set_name(dev, "%s", hdev->name);

	dev_set_drvdata(dev, hdev);

	err = device_register(dev);
	if (err < 0)
		return err;

	if (!bt_debugfs)
		return 0;

	hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs);
	if (!hdev->debugfs)
		return 0;

	debugfs_create_file("inquiry_cache", 0444, hdev->debugfs,
						hdev, &inquiry_cache_fops);

	debugfs_create_file("blacklist", 0444, hdev->debugfs,
						hdev, &blacklist_fops);

	debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);

	debugfs_create_file("auto_accept_delay", 0444, hdev->debugfs, hdev,
						&auto_accept_delay_fops);
	return 0;
}

void hci_unregister_sysfs(struct hci_dev *hdev)
{
	BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);

	debugfs_remove_recursive(hdev->debugfs);

	device_del(&hdev->dev);
}

int __init bt_sysfs_init(void)
{
	bt_debugfs = debugfs_create_dir("bluetooth", NULL);

	bt_class = class_create(THIS_MODULE, "bluetooth");
	if (IS_ERR(bt_class))
		return PTR_ERR(bt_class);

	return 0;
}

void bt_sysfs_cleanup(void)
{
	class_destroy(bt_class);

	debugfs_remove_recursive(bt_debugfs);
}
Commit	Line	Data
1da177e4 LT	1	/* Bluetooth HCI driver model support. */
1da177e4 LT	2
1da177e4	3	#include <linux/kernel.h>
5a0e3ad6	4	#include <linux/slab.h>
1da177e4	5	#include <linux/init.h>
ca325f69	6	#include <linux/debugfs.h>
d4612cb8	7	#include <linux/seq_file.h>
1da177e4 LT	8
	9	#include <net/bluetooth/bluetooth.h>
	10	#include <net/bluetooth/hci_core.h>
	11
aef7d97c	12	static struct class *bt_class;
90855d7b	13
602f9887	14	struct dentry *bt_debugfs;
ca325f69 MH	15	EXPORT_SYMBOL_GPL(bt_debugfs);
ca325f69 MH	16
90855d7b MH	17	static inline char *link_typetostr(int type)
	18	{
	19	switch (type) {
	20	case ACL_LINK:
	21	return "ACL";
	22	case SCO_LINK:
	23	return "SCO";
	24	case ESCO_LINK:
	25	return "eSCO";
21061df3 PH	26	case LE_LINK:
21061df3 PH	27	return "LE";
90855d7b MH	28	default:
	29	return "UNKNOWN";
	30	}
	31	}
	32
	33	static ssize_t show_link_type(struct device dev, struct device_attribute attr, char *buf)
	34	{
	35	struct hci_conn *conn = dev_get_drvdata(dev);
	36	return sprintf(buf, "%s\n", link_typetostr(conn->type));
	37	}
	38
	39	static ssize_t show_link_address(struct device dev, struct device_attribute attr, char *buf)
	40	{
	41	struct hci_conn *conn = dev_get_drvdata(dev);
d6b2eb2f	42	return sprintf(buf, "%s\n", batostr(&conn->dst));
90855d7b MH	43	}
	44
	45	static ssize_t show_link_features(struct device dev, struct device_attribute attr, char *buf)
	46	{
	47	struct hci_conn *conn = dev_get_drvdata(dev);
	48
	49	return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
	50	conn->features[0], conn->features[1],
	51	conn->features[2], conn->features[3],
	52	conn->features[4], conn->features[5],
	53	conn->features[6], conn->features[7]);
	54	}
	55
602f9887 GP	56	#define LINK_ATTR(_name, _mode, _show, _store) \
602f9887 GP	57	struct device_attribute link_attr_##_name = __ATTR(_name, _mode, _show, _store)
90855d7b MH	58
	59	static LINK_ATTR(type, S_IRUGO, show_link_type, NULL);
	60	static LINK_ATTR(address, S_IRUGO, show_link_address, NULL);
	61	static LINK_ATTR(features, S_IRUGO, show_link_features, NULL);
	62
	63	static struct attribute *bt_link_attrs[] = {
	64	&link_attr_type.attr,
	65	&link_attr_address.attr,
	66	&link_attr_features.attr,
	67	NULL
	68	};
	69
	70	static struct attribute_group bt_link_group = {
	71	.attrs = bt_link_attrs,
	72	};
	73
a4dbd674	74	static const struct attribute_group *bt_link_groups[] = {
90855d7b MH	75	&bt_link_group,
	76	NULL
	77	};
	78
	79	static void bt_link_release(struct device *dev)
	80	{
	81	void *data = dev_get_drvdata(dev);
	82	kfree(data);
	83	}
	84
	85	static struct device_type bt_link = {
	86	.name = "link",
	87	.groups = bt_link_groups,
	88	.release = bt_link_release,
	89	};
	90
	91	static void add_conn(struct work_struct *work)
	92	{
f3784d83	93	struct hci_conn *conn = container_of(work, struct hci_conn, work_add);
457ca7bb	94	struct hci_dev *hdev = conn->hdev;
90855d7b	95
457ca7bb MH	96	dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);
457ca7bb MH	97
f74c77cb DY	98	dev_set_drvdata(&conn->dev, conn);
f74c77cb DY	99
90855d7b MH	100	if (device_add(&conn->dev) < 0) {
	101	BT_ERR("Failed to register connection device");
	102	return;
	103	}
384943ec MH	104
384943ec MH	105	hci_dev_hold(hdev);
90855d7b MH	106	}
90855d7b MH	107
90855d7b MH	108	/*
	109	* The rfcomm tty device will possibly retain even when conn
	110	* is down, and sysfs doesn't support move zombie device,
	111	* so we should move the device before conn device is destroyed.
	112	*/
	113	static int __match_tty(struct device dev, void data)
	114	{
fb28ad35	115	return !strncmp(dev_name(dev), "rfcomm", 6);
90855d7b MH	116	}
	117
	118	static void del_conn(struct work_struct *work)
	119	{
f3784d83	120	struct hci_conn *conn = container_of(work, struct hci_conn, work_del);
90855d7b MH	121	struct hci_dev *hdev = conn->hdev;
90855d7b MH	122
a67e899c MH	123	if (!device_is_registered(&conn->dev))
a67e899c MH	124	return;
f3784d83	125
90855d7b MH	126	while (1) {
	127	struct device *dev;
	128
	129	dev = device_find_child(&conn->dev, NULL, __match_tty);
	130	if (!dev)
	131	break;
ffa6a705	132	device_move(dev, NULL, DPM_ORDER_DEV_LAST);
90855d7b MH	133	put_device(dev);
	134	}
	135
	136	device_del(&conn->dev);
	137	put_device(&conn->dev);
384943ec	138
90855d7b MH	139	hci_dev_put(hdev);
	140	}
	141
a67e899c	142	void hci_conn_init_sysfs(struct hci_conn *conn)
90855d7b	143	{
a67e899c MH	144	struct hci_dev *hdev = conn->hdev;
a67e899c MH	145
90855d7b MH	146	BT_DBG("conn %p", conn);
90855d7b MH	147
a67e899c MH	148	conn->dev.type = &bt_link;
	149	conn->dev.class = bt_class;
	150	conn->dev.parent = &hdev->dev;
	151
a67e899c MH	152	device_initialize(&conn->dev);
	153
	154	INIT_WORK(&conn->work_add, add_conn);
f3784d83	155	INIT_WORK(&conn->work_del, del_conn);
a67e899c MH	156	}
	157
	158	void hci_conn_add_sysfs(struct hci_conn *conn)
	159	{
a67e899c MH	160	BT_DBG("conn %p", conn);
a67e899c MH	161
f48fd9c8	162	queue_work(conn->hdev->workqueue, &conn->work_add);
a67e899c MH	163	}
	164
	165	void hci_conn_del_sysfs(struct hci_conn *conn)
	166	{
	167	BT_DBG("conn %p", conn);
90855d7b	168
f48fd9c8	169	queue_work(conn->hdev->workqueue, &conn->work_del);
90855d7b MH	170	}
90855d7b MH	171
c13854ce	172	static inline char *host_bustostr(int bus)
1da177e4	173	{
c13854ce	174	switch (bus) {
0ac53939	175	case HCI_VIRTUAL:
4d0eb004 MH	176	return "VIRTUAL";
	177	case HCI_USB:
	178	return "USB";
	179	case HCI_PCCARD:
	180	return "PCCARD";
	181	case HCI_UART:
	182	return "UART";
	183	case HCI_RS232:
	184	return "RS232";
	185	case HCI_PCI:
	186	return "PCI";
0ac53939 MH	187	case HCI_SDIO:
0ac53939 MH	188	return "SDIO";
4d0eb004 MH	189	default:
	190	return "UNKNOWN";
	191	}
1da177e4 LT	192	}
1da177e4 LT	193
943da25d MH	194	static inline char *host_typetostr(int type)
	195	{
	196	switch (type) {
	197	case HCI_BREDR:
	198	return "BR/EDR";
8f1e1742 DV	199	case HCI_AMP:
8f1e1742 DV	200	return "AMP";
943da25d MH	201	default:
	202	return "UNKNOWN";
	203	}
	204	}
	205
c13854ce	206	static ssize_t show_bus(struct device dev, struct device_attribute attr, char *buf)
1da177e4	207	{
a91f2e39	208	struct hci_dev *hdev = dev_get_drvdata(dev);
c13854ce	209	return sprintf(buf, "%s\n", host_bustostr(hdev->bus));
1da177e4 LT	210	}
1da177e4 LT	211
943da25d MH	212	static ssize_t show_type(struct device dev, struct device_attribute attr, char *buf)
	213	{
	214	struct hci_dev *hdev = dev_get_drvdata(dev);
	215	return sprintf(buf, "%s\n", host_typetostr(hdev->dev_type));
	216	}
	217
a9de9248 MH	218	static ssize_t show_name(struct device dev, struct device_attribute attr, char *buf)
	219	{
	220	struct hci_dev *hdev = dev_get_drvdata(dev);
1f6c6378	221	char name[HCI_MAX_NAME_LENGTH + 1];
a9de9248 MH	222	int i;
a9de9248 MH	223
1f6c6378	224	for (i = 0; i < HCI_MAX_NAME_LENGTH; i++)
a9de9248 MH	225	name[i] = hdev->dev_name[i];
a9de9248 MH	226
1f6c6378	227	name[HCI_MAX_NAME_LENGTH] = '\0';
a9de9248 MH	228	return sprintf(buf, "%s\n", name);
	229	}
	230
	231	static ssize_t show_class(struct device dev, struct device_attribute attr, char *buf)
	232	{
	233	struct hci_dev *hdev = dev_get_drvdata(dev);
	234	return sprintf(buf, "0x%.2x%.2x%.2x\n",
	235	hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
	236	}
	237
a91f2e39	238	static ssize_t show_address(struct device dev, struct device_attribute attr, char *buf)
1da177e4	239	{
a91f2e39	240	struct hci_dev *hdev = dev_get_drvdata(dev);
d6b2eb2f	241	return sprintf(buf, "%s\n", batostr(&hdev->bdaddr));
1da177e4 LT	242	}
1da177e4 LT	243
a9de9248 MH	244	static ssize_t show_features(struct device dev, struct device_attribute attr, char *buf)
	245	{
	246	struct hci_dev *hdev = dev_get_drvdata(dev);
	247
	248	return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
	249	hdev->features[0], hdev->features[1],
	250	hdev->features[2], hdev->features[3],
	251	hdev->features[4], hdev->features[5],
	252	hdev->features[6], hdev->features[7]);
	253	}
	254
1143e5a6 MH	255	static ssize_t show_manufacturer(struct device dev, struct device_attribute attr, char *buf)
	256	{
	257	struct hci_dev *hdev = dev_get_drvdata(dev);
	258	return sprintf(buf, "%d\n", hdev->manufacturer);
	259	}
	260
	261	static ssize_t show_hci_version(struct device dev, struct device_attribute attr, char *buf)
	262	{
	263	struct hci_dev *hdev = dev_get_drvdata(dev);
	264	return sprintf(buf, "%d\n", hdev->hci_ver);
	265	}
	266
	267	static ssize_t show_hci_revision(struct device dev, struct device_attribute attr, char *buf)
	268	{
	269	struct hci_dev *hdev = dev_get_drvdata(dev);
	270	return sprintf(buf, "%d\n", hdev->hci_rev);
	271	}
	272
a91f2e39	273	static ssize_t show_idle_timeout(struct device dev, struct device_attribute attr, char *buf)
04837f64	274	{
a91f2e39	275	struct hci_dev *hdev = dev_get_drvdata(dev);
04837f64 MH	276	return sprintf(buf, "%d\n", hdev->idle_timeout);
	277	}
	278
a91f2e39	279	static ssize_t store_idle_timeout(struct device dev, struct device_attribute attr, const char *buf, size_t count)
04837f64	280	{
a91f2e39	281	struct hci_dev *hdev = dev_get_drvdata(dev);
db940cb0 AD	282	unsigned int val;
db940cb0 AD	283	int rv;
04837f64	284
db940cb0 AD	285	rv = kstrtouint(buf, 0, &val);
	286	if (rv < 0)
	287	return rv;
04837f64 MH	288
	289	if (val != 0 && (val < 500 \|\| val > 3600000))
	290	return -EINVAL;
	291
	292	hdev->idle_timeout = val;
	293
	294	return count;
	295	}
	296
a91f2e39	297	static ssize_t show_sniff_max_interval(struct device dev, struct device_attribute attr, char *buf)
04837f64	298	{
a91f2e39	299	struct hci_dev *hdev = dev_get_drvdata(dev);
04837f64 MH	300	return sprintf(buf, "%d\n", hdev->sniff_max_interval);
	301	}
	302
a91f2e39	303	static ssize_t store_sniff_max_interval(struct device dev, struct device_attribute attr, const char *buf, size_t count)
04837f64	304	{
a91f2e39	305	struct hci_dev *hdev = dev_get_drvdata(dev);
db940cb0 AD	306	u16 val;
db940cb0 AD	307	int rv;
04837f64	308
db940cb0 AD	309	rv = kstrtou16(buf, 0, &val);
	310	if (rv < 0)
	311	return rv;
04837f64	312
db940cb0	313	if (val == 0 \|\| val % 2 \|\| val < hdev->sniff_min_interval)
04837f64 MH	314	return -EINVAL;
	315
	316	hdev->sniff_max_interval = val;
	317
	318	return count;
	319	}
	320
a91f2e39	321	static ssize_t show_sniff_min_interval(struct device dev, struct device_attribute attr, char *buf)
04837f64	322	{
a91f2e39	323	struct hci_dev *hdev = dev_get_drvdata(dev);
04837f64 MH	324	return sprintf(buf, "%d\n", hdev->sniff_min_interval);
	325	}
	326
a91f2e39	327	static ssize_t store_sniff_min_interval(struct device dev, struct device_attribute attr, const char *buf, size_t count)
04837f64	328	{
a91f2e39	329	struct hci_dev *hdev = dev_get_drvdata(dev);
db940cb0 AD	330	u16 val;
db940cb0 AD	331	int rv;
04837f64	332
db940cb0 AD	333	rv = kstrtou16(buf, 0, &val);
	334	if (rv < 0)
	335	return rv;
04837f64	336
db940cb0	337	if (val == 0 \|\| val % 2 \|\| val > hdev->sniff_max_interval)
04837f64 MH	338	return -EINVAL;
	339
	340	hdev->sniff_min_interval = val;
	341
	342	return count;
	343	}
	344
c13854ce	345	static DEVICE_ATTR(bus, S_IRUGO, show_bus, NULL);
943da25d	346	static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
a9de9248 MH	347	static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
a9de9248 MH	348	static DEVICE_ATTR(class, S_IRUGO, show_class, NULL);
a91f2e39	349	static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
a9de9248	350	static DEVICE_ATTR(features, S_IRUGO, show_features, NULL);
1143e5a6 MH	351	static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL);
	352	static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL);
	353	static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL);
1da177e4	354
a91f2e39	355	static DEVICE_ATTR(idle_timeout, S_IRUGO \| S_IWUSR,
04837f64	356	show_idle_timeout, store_idle_timeout);
a91f2e39	357	static DEVICE_ATTR(sniff_max_interval, S_IRUGO \| S_IWUSR,
04837f64	358	show_sniff_max_interval, store_sniff_max_interval);
a91f2e39	359	static DEVICE_ATTR(sniff_min_interval, S_IRUGO \| S_IWUSR,
04837f64 MH	360	show_sniff_min_interval, store_sniff_min_interval);
04837f64 MH	361
90855d7b	362	static struct attribute *bt_host_attrs[] = {
c13854ce	363	&dev_attr_bus.attr,
943da25d	364	&dev_attr_type.attr,
90855d7b MH	365	&dev_attr_name.attr,
	366	&dev_attr_class.attr,
	367	&dev_attr_address.attr,
	368	&dev_attr_features.attr,
	369	&dev_attr_manufacturer.attr,
	370	&dev_attr_hci_version.attr,
	371	&dev_attr_hci_revision.attr,
90855d7b MH	372	&dev_attr_idle_timeout.attr,
	373	&dev_attr_sniff_max_interval.attr,
	374	&dev_attr_sniff_min_interval.attr,
1da177e4 LT	375	NULL
	376	};
	377
90855d7b MH	378	static struct attribute_group bt_host_group = {
90855d7b MH	379	.attrs = bt_host_attrs,
b219e3ac MH	380	};
b219e3ac MH	381
a4dbd674	382	static const struct attribute_group *bt_host_groups[] = {
90855d7b MH	383	&bt_host_group,
90855d7b MH	384	NULL
27d35284 MH	385	};
27d35284 MH	386
90855d7b	387	static void bt_host_release(struct device *dev)
a91f2e39	388	{
b219e3ac MH	389	void *data = dev_get_drvdata(dev);
	390	kfree(data);
	391	}
	392
90855d7b MH	393	static struct device_type bt_host = {
	394	.name = "host",
	395	.groups = bt_host_groups,
	396	.release = bt_host_release,
	397	};
a91f2e39	398
d4612cb8	399	static int inquiry_cache_show(struct seq_file f, void p)
ca325f69	400	{
d4612cb8	401	struct hci_dev *hdev = f->private;
ca325f69 MH	402	struct inquiry_cache *cache = &hdev->inq_cache;
ca325f69 MH	403	struct inquiry_entry *e;
ca325f69 MH	404
	405	hci_dev_lock_bh(hdev);
	406
	407	for (e = cache->list; e; e = e->next) {
	408	struct inquiry_data *data = &e->data;
d4612cb8	409	seq_printf(f, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
d6b2eb2f	410	batostr(&data->bdaddr),
d4612cb8 MH	411	data->pscan_rep_mode, data->pscan_period_mode,
	412	data->pscan_mode, data->dev_class[2],
	413	data->dev_class[1], data->dev_class[0],
	414	__le16_to_cpu(data->clock_offset),
	415	data->rssi, data->ssp_mode, e->timestamp);
ca325f69 MH	416	}
	417
	418	hci_dev_unlock_bh(hdev);
	419
d4612cb8 MH	420	return 0;
	421	}
	422
	423	static int inquiry_cache_open(struct inode inode, struct file file)
	424	{
	425	return single_open(file, inquiry_cache_show, inode->i_private);
ca325f69 MH	426	}
	427
	428	static const struct file_operations inquiry_cache_fops = {
d4612cb8 MH	429	.open = inquiry_cache_open,
	430	.read = seq_read,
	431	.llseek = seq_lseek,
	432	.release = single_release,
ca325f69 MH	433	};
ca325f69 MH	434
32c2ece5 JH	435	static int blacklist_show(struct seq_file f, void p)
	436	{
	437	struct hci_dev *hdev = f->private;
32c2ece5 JH	438	struct list_head *l;
	439
	440	hci_dev_lock_bh(hdev);
	441
ea4bd8ba	442	list_for_each(l, &hdev->blacklist) {
32c2ece5	443	struct bdaddr_list *b;
32c2ece5 JH	444
	445	b = list_entry(l, struct bdaddr_list, list);
	446
d6b2eb2f	447	seq_printf(f, "%s\n", batostr(&b->bdaddr));
32c2ece5 JH	448	}
	449
	450	hci_dev_unlock_bh(hdev);
	451
	452	return 0;
	453	}
	454
	455	static int blacklist_open(struct inode inode, struct file file)
	456	{
	457	return single_open(file, blacklist_show, inode->i_private);
	458	}
	459
	460	static const struct file_operations blacklist_fops = {
	461	.open = blacklist_open,
	462	.read = seq_read,
	463	.llseek = seq_lseek,
	464	.release = single_release,
	465	};
930e1336 JH	466
	467	static void print_bt_uuid(struct seq_file f, u8 uuid)
	468	{
	469	u32 data0, data4;
	470	u16 data1, data2, data3, data5;
	471
	472	memcpy(&data0, &uuid[0], 4);
	473	memcpy(&data1, &uuid[4], 2);
	474	memcpy(&data2, &uuid[6], 2);
	475	memcpy(&data3, &uuid[8], 2);
	476	memcpy(&data4, &uuid[10], 4);
	477	memcpy(&data5, &uuid[14], 2);
	478
	479	seq_printf(f, "%.8x-%.4x-%.4x-%.4x-%.8x%.4x\n",
	480	ntohl(data0), ntohs(data1), ntohs(data2),
	481	ntohs(data3), ntohl(data4), ntohs(data5));
	482	}
	483
	484	static int uuids_show(struct seq_file f, void p)
	485	{
	486	struct hci_dev *hdev = f->private;
	487	struct list_head *l;
	488
	489	hci_dev_lock_bh(hdev);
	490
	491	list_for_each(l, &hdev->uuids) {
	492	struct bt_uuid *uuid;
	493
	494	uuid = list_entry(l, struct bt_uuid, list);
	495
	496	print_bt_uuid(f, uuid->uuid);
	497	}
	498
	499	hci_dev_unlock_bh(hdev);
	500
	501	return 0;
	502	}
	503
	504	static int uuids_open(struct inode inode, struct file file)
	505	{
	506	return single_open(file, uuids_show, inode->i_private);
	507	}
	508
	509	static const struct file_operations uuids_fops = {
	510	.open = uuids_open,
	511	.read = seq_read,
	512	.llseek = seq_lseek,
	513	.release = single_release,
	514	};
	515
9f61656a JH	516	static int auto_accept_delay_set(void *data, u64 val)
	517	{
	518	struct hci_dev *hdev = data;
	519
	520	hci_dev_lock_bh(hdev);
	521
	522	hdev->auto_accept_delay = val;
	523
	524	hci_dev_unlock_bh(hdev);
	525
	526	return 0;
	527	}
	528
	529	static int auto_accept_delay_get(void data, u64 val)
	530	{
	531	struct hci_dev *hdev = data;
	532
	533	hci_dev_lock_bh(hdev);
	534
	535	*val = hdev->auto_accept_delay;
	536
	537	hci_dev_unlock_bh(hdev);
	538
	539	return 0;
	540	}
	541
	542	DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
	543	auto_accept_delay_set, "%llu\n");
	544
1da177e4 LT	545	int hci_register_sysfs(struct hci_dev *hdev)
1da177e4 LT	546	{
a91f2e39	547	struct device *dev = &hdev->dev;
1da177e4 LT	548	int err;
1da177e4 LT	549
c13854ce	550	BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
1da177e4	551
90855d7b MH	552	dev->type = &bt_host;
90855d7b MH	553	dev->class = bt_class;
e9c4bec6	554	dev->parent = hdev->parent;
a91f2e39	555
2e792995	556	dev_set_name(dev, "%s", hdev->name);
1da177e4	557
a91f2e39	558	dev_set_drvdata(dev, hdev);
27d35284	559
a91f2e39	560	err = device_register(dev);
1da177e4 LT	561	if (err < 0)
	562	return err;
	563
ca325f69 MH	564	if (!bt_debugfs)
	565	return 0;
	566
	567	hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs);
	568	if (!hdev->debugfs)
	569	return 0;
	570
	571	debugfs_create_file("inquiry_cache", 0444, hdev->debugfs,
	572	hdev, &inquiry_cache_fops);
	573
32c2ece5 JH	574	debugfs_create_file("blacklist", 0444, hdev->debugfs,
	575	hdev, &blacklist_fops);
	576
930e1336 JH	577	debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
930e1336 JH	578
9f61656a JH	579	debugfs_create_file("auto_accept_delay", 0444, hdev->debugfs, hdev,
9f61656a JH	580	&auto_accept_delay_fops);
1da177e4 LT	581	return 0;
	582	}
	583
	584	void hci_unregister_sysfs(struct hci_dev *hdev)
	585	{
c13854ce	586	BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
1da177e4	587
ca325f69 MH	588	debugfs_remove_recursive(hdev->debugfs);
ca325f69 MH	589
4d0eb004	590	device_del(&hdev->dev);
1da177e4 LT	591	}
	592
	593	int __init bt_sysfs_init(void)
	594	{
ca325f69 MH	595	bt_debugfs = debugfs_create_dir("bluetooth", NULL);
ca325f69 MH	596
a91f2e39	597	bt_class = class_create(THIS_MODULE, "bluetooth");
f48fd9c8	598	if (IS_ERR(bt_class))
90855d7b	599	return PTR_ERR(bt_class);
27d35284 MH	600
27d35284 MH	601	return 0;
1da177e4 LT	602	}
1da177e4 LT	603
860e13b5	604	void bt_sysfs_cleanup(void)
1da177e4	605	{
a91f2e39	606	class_destroy(bt_class);
ca325f69 MH	607
ca325f69 MH	608	debugfs_remove_recursive(bt_debugfs);
1da177e4	609	}