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DEFINITIONS
This source file includes following definitions.
- link_typetostr
- show_link_type
- show_link_address
- show_link_features
- bt_link_release
- add_conn
- hci_conn_add_sysfs
- __match_tty
- del_conn
- hci_conn_del_sysfs
- host_typetostr
- show_type
- show_name
- show_class
- show_address
- show_features
- show_manufacturer
- show_hci_version
- show_hci_revision
- show_inquiry_cache
- show_idle_timeout
- store_idle_timeout
- show_sniff_max_interval
- store_sniff_max_interval
- show_sniff_min_interval
- store_sniff_min_interval
- bt_host_release
- hci_register_sysfs
- hci_unregister_sysfs
- bt_sysfs_init
- bt_sysfs_cleanup
/* Bluetooth HCI driver model support. */
#include <linux/kernel.h>
#include <linux/init.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
struct class *bt_class = NULL;
EXPORT_SYMBOL_GPL(bt_class);
static struct workqueue_struct *btaddconn;
static struct workqueue_struct *btdelconn;
static inline char *link_typetostr(int type)
{
switch (type) {
case ACL_LINK:
return "ACL";
case SCO_LINK:
return "SCO";
case ESCO_LINK:
return "eSCO";
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);
bdaddr_t bdaddr;
baswap(&bdaddr, &conn->dst);
return sprintf(buf, "%s\n", batostr(&bdaddr));
}
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 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);
flush_workqueue(btdelconn);
if (device_add(&conn->dev) < 0) {
BT_ERR("Failed to register connection device");
return;
}
}
void hci_conn_add_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;
snprintf(conn->dev.bus_id, BUS_ID_SIZE, "%s:%d",
hdev->name, conn->handle);
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);
}
static inline char *host_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", host_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 %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, data->ssp_mode, 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 attribute *bt_host_attrs[] = {
&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_inquiry_cache.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 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,
};
int hci_register_sysfs(struct hci_dev *hdev)
{
struct device *dev = &hdev->dev;
int err;
BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
dev->type = &bt_host;
dev->class = bt_class;
dev->parent = hdev->parent;
strlcpy(dev->bus_id, hdev->name, BUS_ID_SIZE);
dev_set_drvdata(dev, hdev);
err = device_register(dev);
if (err < 0)
return err;
return 0;
}
void hci_unregister_sysfs(struct hci_dev *hdev)
{
BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
device_del(&hdev->dev);
}
int __init bt_sysfs_init(void)
{
btaddconn = create_singlethread_workqueue("btaddconn");
if (!btaddconn)
return -ENOMEM;
btdelconn = create_singlethread_workqueue("btdelconn");
if (!btdelconn) {
destroy_workqueue(btaddconn);
return -ENOMEM;
}
bt_class = class_create(THIS_MODULE, "bluetooth");
if (IS_ERR(bt_class)) {
destroy_workqueue(btdelconn);
destroy_workqueue(btaddconn);
return PTR_ERR(bt_class);
}
return 0;
}
void bt_sysfs_cleanup(void)
{
destroy_workqueue(btaddconn);
destroy_workqueue(btdelconn);
class_destroy(bt_class);
}