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

/* Bluetooth HCI driver model support. */

#include <linux/kernel.h>
#include <linux/init.h>

#include <linux/platform_device.h>

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

#ifndef CONFIG_BT_HCI_CORE_DEBUG
#undef  BT_DBG
#define BT_DBG(D...)
#endif
static struct workqueue_struct *btaddconn;
static struct workqueue_struct *btdelconn;

static inline char *typetostr(int type)
{
	switch (type) {
	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 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", typetostr(hdev->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[249];
	int i;

	for (i = 0; i < 248; i++)
		name[i] = hdev->dev_name[i];

	name[248] = '\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);
	bdaddr_t bdaddr;
	baswap(&bdaddr, &hdev->bdaddr);
	return sprintf(buf, "%s\n", batostr(&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_inquiry_cache(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_dev *hdev = dev_get_drvdata(dev);
	struct inquiry_cache *cache = &hdev->inq_cache;
	struct inquiry_entry *e;
	int n = 0;

	hci_dev_lock_bh(hdev);

	for (e = cache->list; e; e = e->next) {
		struct inquiry_data *data = &e->data;
		bdaddr_t bdaddr;
		baswap(&bdaddr, &data->bdaddr);
		n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %u\n",
				batostr(&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, e->timestamp);
	}

	hci_dev_unlock_bh(hdev);
	return n;
}

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);
	char *ptr;
	__u32 val;

	val = simple_strtoul(buf, &ptr, 10);
	if (ptr == buf)
		return -EINVAL;

	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);
	char *ptr;
	__u16 val;

	val = simple_strtoul(buf, &ptr, 10);
	if (ptr == buf)
		return -EINVAL;

	if (val < 0x0002 || val > 0xFFFE || val % 2)
		return -EINVAL;

	if (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);
	char *ptr;
	__u16 val;

	val = simple_strtoul(buf, &ptr, 10);
	if (ptr == buf)
		return -EINVAL;

	if (val < 0x0002 || val > 0xFFFE || val % 2)
		return -EINVAL;

	if (val > hdev->sniff_max_interval)
		return -EINVAL;

	hdev->sniff_min_interval = val;

	return count;
}

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(inquiry_cache, S_IRUGO, show_inquiry_cache, 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 device_attribute *bt_attrs[] = {
	&dev_attr_type,
	&dev_attr_name,
	&dev_attr_class,
	&dev_attr_address,
	&dev_attr_features,
	&dev_attr_manufacturer,
	&dev_attr_hci_version,
	&dev_attr_hci_revision,
	&dev_attr_inquiry_cache,
	&dev_attr_idle_timeout,
	&dev_attr_sniff_max_interval,
	&dev_attr_sniff_min_interval,
	NULL
};

static ssize_t show_conn_type(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct hci_conn *conn = dev_get_drvdata(dev);
	return sprintf(buf, "%s\n", conn->type == ACL_LINK ? "ACL" : "SCO");
}

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

#define CONN_ATTR(_name,_mode,_show,_store) \
struct device_attribute conn_attr_##_name = __ATTR(_name,_mode,_show,_store)

static CONN_ATTR(type, S_IRUGO, show_conn_type, NULL);
static CONN_ATTR(address, S_IRUGO, show_conn_address, NULL);

static struct device_attribute *conn_attrs[] = {
	&conn_attr_type,
	&conn_attr_address,
	NULL
};

struct class *bt_class = NULL;
EXPORT_SYMBOL_GPL(bt_class);

static struct bus_type bt_bus = {
	.name	= "bluetooth",
};

static struct platform_device *bt_platform;

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

static void add_conn(struct work_struct *work)
{
	struct hci_conn *conn = container_of(work, struct hci_conn, work);
	int i;

	flush_workqueue(btdelconn);

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

	for (i = 0; conn_attrs[i]; i++)
		if (device_create_file(&conn->dev, conn_attrs[i]) < 0)
			BT_ERR("Failed to create connection attribute");
}

void hci_conn_add_sysfs(struct hci_conn *conn)
{
	struct hci_dev *hdev = conn->hdev;
	bdaddr_t *ba = &conn->dst;

	BT_DBG("conn %p", conn);

	conn->dev.bus = &bt_bus;
	conn->dev.parent = &hdev->dev;

	conn->dev.release = bt_release;

	snprintf(conn->dev.bus_id, BUS_ID_SIZE,
			"%s%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X",
			conn->type == ACL_LINK ? "acl" : "sco",
			ba->b[5], ba->b[4], ba->b[3],
			ba->b[2], ba->b[1], ba->b[0]);

	dev_set_drvdata(&conn->dev, conn);

	device_initialize(&conn->dev);

	INIT_WORK(&conn->work, add_conn);

	queue_work(btaddconn, &conn->work);
}

/*
 * 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->bus_id, "rfcomm", 6);
}

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

	while (1) {
		struct device *dev;

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

	device_del(&conn->dev);
	put_device(&conn->dev);
	hci_dev_put(hdev);
}

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

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

	INIT_WORK(&conn->work, del_conn);

	queue_work(btdelconn, &conn->work);
}

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

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

	dev->bus = &bt_bus;
	dev->parent = hdev->parent;

	strlcpy(dev->bus_id, hdev->name, BUS_ID_SIZE);

	dev->release = bt_release;

	dev_set_drvdata(dev, hdev);

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

	for (i = 0; bt_attrs[i]; i++)
		if (device_create_file(dev, bt_attrs[i]) < 0)
			BT_ERR("Failed to create device attribute");

	if (sysfs_create_link(&bt_class->subsys.kobj,
				&dev->kobj, kobject_name(&dev->kobj)) < 0)
		BT_ERR("Failed to create class symlink");

	return 0;
}

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

	sysfs_remove_link(&bt_class->subsys.kobj,
					kobject_name(&hdev->dev.kobj));

	device_del(&hdev->dev);
}

int __init bt_sysfs_init(void)
{
	int err;

	btaddconn = create_singlethread_workqueue("btaddconn");
	if (!btaddconn) {
		err = -ENOMEM;
		goto out;
	}

	btdelconn = create_singlethread_workqueue("btdelconn");
	if (!btdelconn) {
		err = -ENOMEM;
		goto out_del;
	}

	bt_platform = platform_device_register_simple("bluetooth", -1, NULL, 0);
	if (IS_ERR(bt_platform)) {
		err = PTR_ERR(bt_platform);
		goto out_platform;
	}

	err = bus_register(&bt_bus);
	if (err < 0)
		goto out_bus;

	bt_class = class_create(THIS_MODULE, "bluetooth");
	if (IS_ERR(bt_class)) {
		err = PTR_ERR(bt_class);
		goto out_class;
	}

	return 0;

out_class:
	bus_unregister(&bt_bus);
out_bus:
	platform_device_unregister(bt_platform);
out_platform:
	destroy_workqueue(btdelconn);
out_del:
	destroy_workqueue(btaddconn);
out:
	return err;
}

void bt_sysfs_cleanup(void)
{
	destroy_workqueue(btaddconn);

	destroy_workqueue(btdelconn);

	class_destroy(bt_class);

	bus_unregister(&bt_bus);

	platform_device_unregister(bt_platform);
}
Commit	Line	Data
1da177e4 LT	1	/* Bluetooth HCI driver model support. */
1da177e4 LT	2
1da177e4 LT	3	#include <linux/kernel.h>
	4	#include <linux/init.h>
	5
27d35284 MH	6	#include <linux/platform_device.h>
27d35284 MH	7
1da177e4 LT	8	#include <net/bluetooth/bluetooth.h>
	9	#include <net/bluetooth/hci_core.h>
	10
	11	#ifndef CONFIG_BT_HCI_CORE_DEBUG
	12	#undef BT_DBG
	13	#define BT_DBG(D...)
	14	#endif
b6c06321 DY	15	static struct workqueue_struct *btaddconn;
b6c06321 DY	16	static struct workqueue_struct *btdelconn;
1da177e4	17
4d0eb004	18	static inline char *typetostr(int type)
1da177e4	19	{
4d0eb004	20	switch (type) {
0ac53939	21	case HCI_VIRTUAL:
4d0eb004 MH	22	return "VIRTUAL";
	23	case HCI_USB:
	24	return "USB";
	25	case HCI_PCCARD:
	26	return "PCCARD";
	27	case HCI_UART:
	28	return "UART";
	29	case HCI_RS232:
	30	return "RS232";
	31	case HCI_PCI:
	32	return "PCI";
0ac53939 MH	33	case HCI_SDIO:
0ac53939 MH	34	return "SDIO";
4d0eb004 MH	35	default:
	36	return "UNKNOWN";
	37	}
1da177e4 LT	38	}
1da177e4 LT	39
a91f2e39	40	static ssize_t show_type(struct device dev, struct device_attribute attr, char *buf)
1da177e4	41	{
a91f2e39	42	struct hci_dev *hdev = dev_get_drvdata(dev);
4d0eb004	43	return sprintf(buf, "%s\n", typetostr(hdev->type));
1da177e4 LT	44	}
1da177e4 LT	45
a9de9248 MH	46	static ssize_t show_name(struct device dev, struct device_attribute attr, char *buf)
	47	{
	48	struct hci_dev *hdev = dev_get_drvdata(dev);
	49	char name[249];
	50	int i;
	51
	52	for (i = 0; i < 248; i++)
	53	name[i] = hdev->dev_name[i];
	54
	55	name[248] = '\0';
	56	return sprintf(buf, "%s\n", name);
	57	}
	58
	59	static ssize_t show_class(struct device dev, struct device_attribute attr, char *buf)
	60	{
	61	struct hci_dev *hdev = dev_get_drvdata(dev);
	62	return sprintf(buf, "0x%.2x%.2x%.2x\n",
	63	hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
	64	}
	65
a91f2e39	66	static ssize_t show_address(struct device dev, struct device_attribute attr, char *buf)
1da177e4	67	{
a91f2e39	68	struct hci_dev *hdev = dev_get_drvdata(dev);
1da177e4 LT	69	bdaddr_t bdaddr;
	70	baswap(&bdaddr, &hdev->bdaddr);
	71	return sprintf(buf, "%s\n", batostr(&bdaddr));
	72	}
	73
a9de9248 MH	74	static ssize_t show_features(struct device dev, struct device_attribute attr, char *buf)
	75	{
	76	struct hci_dev *hdev = dev_get_drvdata(dev);
	77
	78	return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
	79	hdev->features[0], hdev->features[1],
	80	hdev->features[2], hdev->features[3],
	81	hdev->features[4], hdev->features[5],
	82	hdev->features[6], hdev->features[7]);
	83	}
	84
1143e5a6 MH	85	static ssize_t show_manufacturer(struct device dev, struct device_attribute attr, char *buf)
	86	{
	87	struct hci_dev *hdev = dev_get_drvdata(dev);
	88	return sprintf(buf, "%d\n", hdev->manufacturer);
	89	}
	90
	91	static ssize_t show_hci_version(struct device dev, struct device_attribute attr, char *buf)
	92	{
	93	struct hci_dev *hdev = dev_get_drvdata(dev);
	94	return sprintf(buf, "%d\n", hdev->hci_ver);
	95	}
	96
	97	static ssize_t show_hci_revision(struct device dev, struct device_attribute attr, char *buf)
	98	{
	99	struct hci_dev *hdev = dev_get_drvdata(dev);
	100	return sprintf(buf, "%d\n", hdev->hci_rev);
	101	}
	102
a91f2e39	103	static ssize_t show_inquiry_cache(struct device dev, struct device_attribute attr, char *buf)
1da177e4	104	{
a91f2e39	105	struct hci_dev *hdev = dev_get_drvdata(dev);
1da177e4 LT	106	struct inquiry_cache *cache = &hdev->inq_cache;
	107	struct inquiry_entry *e;
	108	int n = 0;
	109
	110	hci_dev_lock_bh(hdev);
	111
	112	for (e = cache->list; e; e = e->next) {
	113	struct inquiry_data *data = &e->data;
	114	bdaddr_t bdaddr;
	115	baswap(&bdaddr, &data->bdaddr);
	116	n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %u\n",
	117	batostr(&bdaddr),
	118	data->pscan_rep_mode, data->pscan_period_mode, data->pscan_mode,
	119	data->dev_class[2], data->dev_class[1], data->dev_class[0],
	120	__le16_to_cpu(data->clock_offset), data->rssi, e->timestamp);
	121	}
	122
	123	hci_dev_unlock_bh(hdev);
	124	return n;
	125	}
	126
a91f2e39	127	static ssize_t show_idle_timeout(struct device dev, struct device_attribute attr, char *buf)
04837f64	128	{
a91f2e39	129	struct hci_dev *hdev = dev_get_drvdata(dev);
04837f64 MH	130	return sprintf(buf, "%d\n", hdev->idle_timeout);
	131	}
	132
a91f2e39	133	static ssize_t store_idle_timeout(struct device dev, struct device_attribute attr, const char *buf, size_t count)
04837f64	134	{
a91f2e39	135	struct hci_dev *hdev = dev_get_drvdata(dev);
04837f64 MH	136	char *ptr;
	137	__u32 val;
	138
	139	val = simple_strtoul(buf, &ptr, 10);
	140	if (ptr == buf)
	141	return -EINVAL;
	142
	143	if (val != 0 && (val < 500 \|\| val > 3600000))
	144	return -EINVAL;
	145
	146	hdev->idle_timeout = val;
	147
	148	return count;
	149	}
	150
a91f2e39	151	static ssize_t show_sniff_max_interval(struct device dev, struct device_attribute attr, char *buf)
04837f64	152	{
a91f2e39	153	struct hci_dev *hdev = dev_get_drvdata(dev);
04837f64 MH	154	return sprintf(buf, "%d\n", hdev->sniff_max_interval);
	155	}
	156
a91f2e39	157	static ssize_t store_sniff_max_interval(struct device dev, struct device_attribute attr, const char *buf, size_t count)
04837f64	158	{
a91f2e39	159	struct hci_dev *hdev = dev_get_drvdata(dev);
04837f64 MH	160	char *ptr;
	161	__u16 val;
	162
	163	val = simple_strtoul(buf, &ptr, 10);
	164	if (ptr == buf)
	165	return -EINVAL;
	166
	167	if (val < 0x0002 \|\| val > 0xFFFE \|\| val % 2)
	168	return -EINVAL;
	169
	170	if (val < hdev->sniff_min_interval)
	171	return -EINVAL;
	172
	173	hdev->sniff_max_interval = val;
	174
	175	return count;
	176	}
	177
a91f2e39	178	static ssize_t show_sniff_min_interval(struct device dev, struct device_attribute attr, char *buf)
04837f64	179	{
a91f2e39	180	struct hci_dev *hdev = dev_get_drvdata(dev);
04837f64 MH	181	return sprintf(buf, "%d\n", hdev->sniff_min_interval);
	182	}
	183
a91f2e39	184	static ssize_t store_sniff_min_interval(struct device dev, struct device_attribute attr, const char *buf, size_t count)
04837f64	185	{
a91f2e39	186	struct hci_dev *hdev = dev_get_drvdata(dev);
04837f64 MH	187	char *ptr;
	188	__u16 val;
	189
	190	val = simple_strtoul(buf, &ptr, 10);
	191	if (ptr == buf)
	192	return -EINVAL;
	193
	194	if (val < 0x0002 \|\| val > 0xFFFE \|\| val % 2)
	195	return -EINVAL;
	196
	197	if (val > hdev->sniff_max_interval)
	198	return -EINVAL;
	199
	200	hdev->sniff_min_interval = val;
	201
	202	return count;
	203	}
	204
a91f2e39	205	static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
a9de9248 MH	206	static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
a9de9248 MH	207	static DEVICE_ATTR(class, S_IRUGO, show_class, NULL);
a91f2e39	208	static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
a9de9248	209	static DEVICE_ATTR(features, S_IRUGO, show_features, NULL);
1143e5a6 MH	210	static DEVICE_ATTR(manufacturer, S_IRUGO, show_manufacturer, NULL);
	211	static DEVICE_ATTR(hci_version, S_IRUGO, show_hci_version, NULL);
	212	static DEVICE_ATTR(hci_revision, S_IRUGO, show_hci_revision, NULL);
a91f2e39	213	static DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL);
1da177e4	214
a91f2e39	215	static DEVICE_ATTR(idle_timeout, S_IRUGO \| S_IWUSR,
04837f64	216	show_idle_timeout, store_idle_timeout);
a91f2e39	217	static DEVICE_ATTR(sniff_max_interval, S_IRUGO \| S_IWUSR,
04837f64	218	show_sniff_max_interval, store_sniff_max_interval);
a91f2e39	219	static DEVICE_ATTR(sniff_min_interval, S_IRUGO \| S_IWUSR,
04837f64 MH	220	show_sniff_min_interval, store_sniff_min_interval);
04837f64 MH	221
a91f2e39	222	static struct device_attribute *bt_attrs[] = {
a91f2e39	223	&dev_attr_type,
a9de9248 MH	224	&dev_attr_name,
a9de9248 MH	225	&dev_attr_class,
a91f2e39	226	&dev_attr_address,
a9de9248	227	&dev_attr_features,
1143e5a6 MH	228	&dev_attr_manufacturer,
	229	&dev_attr_hci_version,
	230	&dev_attr_hci_revision,
a91f2e39 MH	231	&dev_attr_inquiry_cache,
	232	&dev_attr_idle_timeout,
	233	&dev_attr_sniff_max_interval,
	234	&dev_attr_sniff_min_interval,
1da177e4 LT	235	NULL
	236	};
	237
b219e3ac MH	238	static ssize_t show_conn_type(struct device dev, struct device_attribute attr, char *buf)
	239	{
	240	struct hci_conn *conn = dev_get_drvdata(dev);
	241	return sprintf(buf, "%s\n", conn->type == ACL_LINK ? "ACL" : "SCO");
	242	}
	243
	244	static ssize_t show_conn_address(struct device dev, struct device_attribute attr, char *buf)
	245	{
	246	struct hci_conn *conn = dev_get_drvdata(dev);
	247	bdaddr_t bdaddr;
	248	baswap(&bdaddr, &conn->dst);
	249	return sprintf(buf, "%s\n", batostr(&bdaddr));
	250	}
	251
	252	#define CONN_ATTR(_name,_mode,_show,_store) \
	253	struct device_attribute conn_attr_##_name = __ATTR(_name,_mode,_show,_store)
	254
	255	static CONN_ATTR(type, S_IRUGO, show_conn_type, NULL);
	256	static CONN_ATTR(address, S_IRUGO, show_conn_address, NULL);
	257
	258	static struct device_attribute *conn_attrs[] = {
	259	&conn_attr_type,
	260	&conn_attr_address,
	261	NULL
	262	};
	263
a91f2e39	264	struct class *bt_class = NULL;
be9d1227 MH	265	EXPORT_SYMBOL_GPL(bt_class);
be9d1227 MH	266
27d35284 MH	267	static struct bus_type bt_bus = {
	268	.name = "bluetooth",
	269	};
	270
	271	static struct platform_device *bt_platform;
	272
a91f2e39 MH	273	static void bt_release(struct device *dev)
a91f2e39 MH	274	{
b219e3ac MH	275	void *data = dev_get_drvdata(dev);
	276	kfree(data);
	277	}
	278
c4028958	279	static void add_conn(struct work_struct *work)
b219e3ac	280	{
c4028958	281	struct hci_conn *conn = container_of(work, struct hci_conn, work);
b219e3ac MH	282	int i;
b219e3ac MH	283
b6c06321	284	flush_workqueue(btdelconn);
5396c935	285
c893779e	286	if (device_add(&conn->dev) < 0) {
df5c37ea MH	287	BT_ERR("Failed to register connection device");
	288	return;
	289	}
b219e3ac MH	290
b219e3ac MH	291	for (i = 0; conn_attrs[i]; i++)
df5c37ea MH	292	if (device_create_file(&conn->dev, conn_attrs[i]) < 0)
df5c37ea MH	293	BT_ERR("Failed to create connection attribute");
b219e3ac MH	294	}
	295
	296	void hci_conn_add_sysfs(struct hci_conn *conn)
	297	{
	298	struct hci_dev *hdev = conn->hdev;
	299	bdaddr_t *ba = &conn->dst;
	300
	301	BT_DBG("conn %p", conn);
	302
e52726de MH	303	conn->dev.bus = &bt_bus;
	304	conn->dev.parent = &hdev->dev;
	305
b219e3ac MH	306	conn->dev.release = bt_release;
	307
	308	snprintf(conn->dev.bus_id, BUS_ID_SIZE,
	309	"%s%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X",
	310	conn->type == ACL_LINK ? "acl" : "sco",
	311	ba->b[5], ba->b[4], ba->b[3],
	312	ba->b[2], ba->b[1], ba->b[0]);
	313
	314	dev_set_drvdata(&conn->dev, conn);
	315
c893779e MH	316	device_initialize(&conn->dev);
c893779e MH	317
c4028958	318	INIT_WORK(&conn->work, add_conn);
b219e3ac	319
b6c06321	320	queue_work(btaddconn, &conn->work);
b219e3ac MH	321	}
b219e3ac MH	322
8ac62dc7 DY	323	/*
	324	* The rfcomm tty device will possibly retain even when conn
	325	* is down, and sysfs doesn't support move zombie device,
	326	* so we should move the device before conn device is destroyed.
	327	*/
acea6852 DY	328	static int __match_tty(struct device dev, void data)
acea6852 DY	329	{
8ac62dc7	330	return !strncmp(dev->bus_id, "rfcomm", 6);
acea6852 DY	331	}
acea6852 DY	332
c4028958	333	static void del_conn(struct work_struct *work)
b219e3ac	334	{
c4028958	335	struct hci_conn *conn = container_of(work, struct hci_conn, work);
0cd63c80	336	struct hci_dev *hdev = conn->hdev;
acea6852	337
988d0093 DM	338	while (1) {
	339	struct device *dev;
	340
	341	dev = device_find_child(&conn->dev, NULL, __match_tty);
	342	if (!dev)
	343	break;
acea6852 DY	344	device_move(dev, NULL);
	345	put_device(dev);
	346	}
0cd63c80	347
b219e3ac	348	device_del(&conn->dev);
38b7da09	349	put_device(&conn->dev);
0cd63c80	350	hci_dev_put(hdev);
b219e3ac MH	351	}
	352
	353	void hci_conn_del_sysfs(struct hci_conn *conn)
	354	{
	355	BT_DBG("conn %p", conn);
	356
c893779e MH	357	if (!device_is_registered(&conn->dev))
	358	return;
	359
c4028958	360	INIT_WORK(&conn->work, del_conn);
b219e3ac	361
b6c06321	362	queue_work(btdelconn, &conn->work);
a91f2e39 MH	363	}
a91f2e39 MH	364
1da177e4 LT	365	int hci_register_sysfs(struct hci_dev *hdev)
1da177e4 LT	366	{
a91f2e39	367	struct device *dev = &hdev->dev;
1da177e4 LT	368	unsigned int i;
	369	int err;
	370
	371	BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
	372
53c1d4b0	373	dev->bus = &bt_bus;
e9c4bec6	374	dev->parent = hdev->parent;
a91f2e39 MH	375
a91f2e39 MH	376	strlcpy(dev->bus_id, hdev->name, BUS_ID_SIZE);
1da177e4	377
a91f2e39	378	dev->release = bt_release;
27d35284	379
a91f2e39	380	dev_set_drvdata(dev, hdev);
27d35284	381
a91f2e39	382	err = device_register(dev);
1da177e4 LT	383	if (err < 0)
	384	return err;
	385
	386	for (i = 0; bt_attrs[i]; i++)
df5c37ea MH	387	if (device_create_file(dev, bt_attrs[i]) < 0)
df5c37ea MH	388	BT_ERR("Failed to create device attribute");
1da177e4	389
d12db0b0	390	if (sysfs_create_link(&bt_class->subsys.kobj,
53c1d4b0 MH	391	&dev->kobj, kobject_name(&dev->kobj)) < 0)
	392	BT_ERR("Failed to create class symlink");
	393
1da177e4 LT	394	return 0;
	395	}
	396
	397	void hci_unregister_sysfs(struct hci_dev *hdev)
	398	{
1da177e4 LT	399	BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
1da177e4 LT	400
d12db0b0	401	sysfs_remove_link(&bt_class->subsys.kobj,
53c1d4b0 MH	402	kobject_name(&hdev->dev.kobj));
53c1d4b0 MH	403
4d0eb004	404	device_del(&hdev->dev);
1da177e4 LT	405	}
	406
	407	int __init bt_sysfs_init(void)
	408	{
27d35284 MH	409	int err;
27d35284 MH	410
b6c06321 DY	411	btaddconn = create_singlethread_workqueue("btaddconn");
	412	if (!btaddconn) {
	413	err = -ENOMEM;
	414	goto out;
	415	}
5396c935	416
b6c06321 DY	417	btdelconn = create_singlethread_workqueue("btdelconn");
	418	if (!btdelconn) {
	419	err = -ENOMEM;
	420	goto out_del;
	421	}
	422
27d35284	423	bt_platform = platform_device_register_simple("bluetooth", -1, NULL, 0);
b6c06321 DY	424	if (IS_ERR(bt_platform)) {
	425	err = PTR_ERR(bt_platform);
	426	goto out_platform;
	427	}
27d35284 MH	428
27d35284 MH	429	err = bus_register(&bt_bus);
b6c06321 DY	430	if (err < 0)
b6c06321 DY	431	goto out_bus;
27d35284	432
a91f2e39 MH	433	bt_class = class_create(THIS_MODULE, "bluetooth");
a91f2e39 MH	434	if (IS_ERR(bt_class)) {
b6c06321 DY	435	err = PTR_ERR(bt_class);
b6c06321 DY	436	goto out_class;
27d35284 MH	437	}
	438
	439	return 0;
b6c06321 DY	440
	441	out_class:
	442	bus_unregister(&bt_bus);
	443	out_bus:
	444	platform_device_unregister(bt_platform);
	445	out_platform:
	446	destroy_workqueue(btdelconn);
	447	out_del:
	448	destroy_workqueue(btaddconn);
	449	out:
	450	return err;
1da177e4 LT	451	}
1da177e4 LT	452
860e13b5	453	void bt_sysfs_cleanup(void)
1da177e4	454	{
b6c06321	455	destroy_workqueue(btaddconn);
5396c935	456
b6c06321	457	destroy_workqueue(btdelconn);
5396c935	458
a91f2e39	459	class_destroy(bt_class);
5396c935	460
27d35284	461	bus_unregister(&bt_bus);
5396c935	462
27d35284	463	platform_device_unregister(bt_platform);
1da177e4	464	}