1 files changed, 119 insertions, 369 deletions

diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 84360c117d4..555982a78a5 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -1,464 +1,214 @@
 /* Bluetooth HCI driver model support. */
 
-#include <linux/kernel.h>
-#include <linux/init.h>
-
-#include <linux/platform_device.h>
+#include <linux/module.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 struct class *bt_class;
 
-static inline char *typetostr(int type)
+static inline char *link_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";
+	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_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)
+static ssize_t show_link_type(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));
+	struct hci_conn *conn = to_hci_conn(dev);
+	return sprintf(buf, "%s\n", link_typetostr(conn->type));
 }
 
-static ssize_t show_features(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_link_address(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]);
+	struct hci_conn *conn = to_hci_conn(dev);
+	return sprintf(buf, "%pMR\n", &conn->dst);
 }
 
-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);
-}
+#define LINK_ATTR(_name, _mode, _show, _store) \
+struct device_attribute link_attr_##_name = __ATTR(_name, _mode, _show, _store)
 
-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 LINK_ATTR(type, S_IRUGO, show_link_type, NULL);
+static LINK_ATTR(address, S_IRUGO, show_link_address, NULL);
 
-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,
+static struct attribute *bt_link_attrs[] = {
+	&link_attr_type.attr,
+	&link_attr_address.attr,
 	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");
-}
+ATTRIBUTE_GROUPS(bt_link);
 
-static ssize_t show_conn_address(struct device *dev, struct device_attribute *attr, char *buf)
+static void bt_link_release(struct device *dev)
 {
-	struct hci_conn *conn = dev_get_drvdata(dev);
-	bdaddr_t bdaddr;
-	baswap(&bdaddr, &conn->dst);
-	return sprintf(buf, "%s\n", batostr(&bdaddr));
+	struct hci_conn *conn = to_hci_conn(dev);
+	kfree(conn);
 }
 
-#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
+static struct device_type bt_link = {
+	.name    = "link",
+	.groups  = bt_link_groups,
+	.release = bt_link_release,
 };
 
-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)
+/*
+ * 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)
 {
-	void *data = dev_get_drvdata(dev);
-	kfree(data);
+	return !strncmp(dev_name(dev), "rfcomm", 6);
 }
 
-static void add_conn(struct work_struct *work)
+void hci_conn_init_sysfs(struct hci_conn *conn)
 {
-	struct hci_conn *conn = container_of(work, struct hci_conn, work);
-	int i;
+	struct hci_dev *hdev = conn->hdev;
 
-	flush_workqueue(btdelconn);
+	BT_DBG("conn %p", conn);
 
-	if (device_add(&conn->dev) < 0) {
-		BT_ERR("Failed to register connection device");
-		return;
-	}
+	conn->dev.type = &bt_link;
+	conn->dev.class = bt_class;
+	conn->dev.parent = &hdev->dev;
 
-	for (i = 0; conn_attrs[i]; i++)
-		if (device_create_file(&conn->dev, conn_attrs[i]) < 0)
-			BT_ERR("Failed to create connection attribute");
+	device_initialize(&conn->dev);
 }
 
 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);
+	dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);
 
-	queue_work(btaddconn, &conn->work);
-}
+	if (device_add(&conn->dev) < 0) {
+		BT_ERR("Failed to register connection device");
+		return;
+	}
 
-/*
- * 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);
+	hci_dev_hold(hdev);
 }
 
-static void del_conn(struct work_struct *work)
+void hci_conn_del_sysfs(struct hci_conn *conn)
 {
-	struct hci_conn *conn = container_of(work, struct hci_conn, work);
 	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);
+		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_del_sysfs(struct hci_conn *conn)
+static inline char *host_typetostr(int type)
 {
-	BT_DBG("conn %p", conn);
-
-	if (!device_is_registered(&conn->dev))
-		return;
-
-	INIT_WORK(&conn->work, del_conn);
-
-	queue_work(btdelconn, &conn->work);
+	switch (type) {
+	case HCI_BREDR:
+		return "BR/EDR";
+	case HCI_AMP:
+		return "AMP";
+	default:
+		return "UNKNOWN";
+	}
 }
 
-int hci_register_sysfs(struct hci_dev *hdev)
+static ssize_t show_type(struct device *dev,
+			 struct device_attribute *attr, char *buf)
 {
-	struct device *dev = &hdev->dev;
-	unsigned int i;
-	int err;
-
-	BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
+	struct hci_dev *hdev = to_hci_dev(dev);
+	return sprintf(buf, "%s\n", host_typetostr(hdev->dev_type));
+}
 
-	dev->bus = &bt_bus;
-	dev->parent = hdev->parent;
+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;
 
-	strlcpy(dev->bus_id, hdev->name, BUS_ID_SIZE);
+	for (i = 0; i < HCI_MAX_NAME_LENGTH; i++)
+		name[i] = hdev->dev_name[i];
 
-	dev->release = bt_release;
+	name[HCI_MAX_NAME_LENGTH] = '\0';
+	return sprintf(buf, "%s\n", name);
+}
 
-	dev_set_drvdata(dev, hdev);
+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, "%pMR\n", &hdev->bdaddr);
+}
 
-	err = device_register(dev);
-	if (err < 0)
-		return err;
+static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
+static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
+static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
 
-	for (i = 0; bt_attrs[i]; i++)
-		if (device_create_file(dev, bt_attrs[i]) < 0)
-			BT_ERR("Failed to create device attribute");
+static struct attribute *bt_host_attrs[] = {
+	&dev_attr_type.attr,
+	&dev_attr_name.attr,
+	&dev_attr_address.attr,
+	NULL
+};
 
-	if (sysfs_create_link(&bt_class->subsys.kobj,
-				&dev->kobj, kobject_name(&dev->kobj)) < 0)
-		BT_ERR("Failed to create class symlink");
+ATTRIBUTE_GROUPS(bt_host);
 
-	return 0;
+static void bt_host_release(struct device *dev)
+{
+	struct hci_dev *hdev = to_hci_dev(dev);
+	kfree(hdev);
+	module_put(THIS_MODULE);
 }
 
-void hci_unregister_sysfs(struct hci_dev *hdev)
+static struct device_type bt_host = {
+	.name    = "host",
+	.groups  = bt_host_groups,
+	.release = bt_host_release,
+};
+
+void hci_init_sysfs(struct hci_dev *hdev)
 {
-	BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
+	struct device *dev = &hdev->dev;
 
-	sysfs_remove_link(&bt_class->subsys.kobj,
-					kobject_name(&hdev->dev.kobj));
+	dev->type = &bt_host;
+	dev->class = bt_class;
 
-	device_del(&hdev->dev);
+	__module_get(THIS_MODULE);
+	device_initialize(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;
+	return PTR_ERR_OR_ZERO(bt_class);
 }
 
 void bt_sysfs_cleanup(void)
 {
-	destroy_workqueue(btaddconn);
-
-	destroy_workqueue(btdelconn);
-
 	class_destroy(bt_class);
-
-	bus_unregister(&bt_bus);
-
-	platform_device_unregister(bt_platform);
 }