1 files changed, 588 insertions, 0 deletions
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
new file mode 100644
index 00000000..bc154298
--- /dev/null
+++ b/net/bluetooth/hci_sysfs.c
@@ -0,0 +1,588 @@
+/* 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 <linux/module.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 = to_hci_conn(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 = to_hci_conn(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 = to_hci_conn(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)
+{
+	struct hci_conn *conn = to_hci_conn(dev);
+	kfree(conn);
+}
+
+static struct device_type bt_link = {
+	.name    = "link",
+	.groups  = bt_link_groups,
+	.release = bt_link_release,
+};
+
+/*
+ * 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);
+}
+
+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);
+}
+
+void hci_conn_add_sysfs(struct hci_conn *conn)
+{
+	struct hci_dev *hdev = conn->hdev;
+
+	BT_DBG("conn %p", conn);
+
+	dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);
+
+	if (device_add(&conn->dev) < 0) {
+		BT_ERR("Failed to register connection device");
+		return;
+	}
+
+	hci_dev_hold(hdev);
+}
+
+void hci_conn_del_sysfs(struct hci_conn *conn)
+{
+	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);
+}
+
+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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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 = to_hci_dev(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)
+{
+	struct hci_dev *hdev = to_hci_dev(dev);
+	kfree(hdev);
+	module_put(THIS_MODULE);
+}
+
+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 discovery_state *cache = &hdev->discovery;
+	struct inquiry_entry *e;
+
+	hci_dev_lock(hdev);
+
+	list_for_each_entry(e, &cache->all, all) {
+		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(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 bdaddr_list *b;
+
+	hci_dev_lock(hdev);
+
+	list_for_each_entry(b, &hdev->blacklist, list)
+		seq_printf(f, "%s\n", batostr(&b->bdaddr));
+
+	hci_dev_unlock(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 bt_uuid *uuid;
+
+	hci_dev_lock(hdev);
+
+	list_for_each_entry(uuid, &hdev->uuids, list)
+		print_bt_uuid(f, uuid->uuid);
+
+	hci_dev_unlock(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(hdev);
+
+	hdev->auto_accept_delay = val;
+
+	hci_dev_unlock(hdev);
+
+	return 0;
+}
+
+static int auto_accept_delay_get(void *data, u64 *val)
+{
+	struct hci_dev *hdev = data;
+
+	hci_dev_lock(hdev);
+
+	*val = hdev->auto_accept_delay;
+
+	hci_dev_unlock(hdev);
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
+					auto_accept_delay_set, "%llu\n");
+
+void hci_init_sysfs(struct hci_dev *hdev)
+{
+	struct device *dev = &hdev->dev;
+
+	dev->type = &bt_host;
+	dev->class = bt_class;
+
+	__module_get(THIS_MODULE);
+	device_initialize(dev);
+}
+
+int hci_add_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->parent = hdev->parent;
+	dev_set_name(dev, "%s", hdev->name);
+
+	err = device_add(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_del_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);
+}