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a9de924806
linux/net/bluetooth/hci_sysfs.c
Marcel Holtmann a9de924806 [Bluetooth] Switch from OGF+OCF to using only opcodes 
The Bluetooth HCI commands are divided into logical OGF groups for
easier identification of their purposes. While this still makes sense
for the written specification, its makes the code only more complex
and harder to read. So instead of using separate OGF and OCF values
to identify the commands, use a common 16-bit opcode that combines
both values. As a side effect this also reduces the complexity of
OGF and OCF calculations during command header parsing.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-10-22 02:59:40 -07:00

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/* 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 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;
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);
schedule_work(&conn->work);
}
static void del_conn(struct work_struct *work)
{
struct hci_conn *conn = container_of(work, struct hci_conn, work);
device_del(&conn->dev);
}
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);
schedule_work(&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;
bt_platform = platform_device_register_simple("bluetooth", -1, NULL, 0);
if (IS_ERR(bt_platform))
return PTR_ERR(bt_platform);
err = bus_register(&bt_bus);
if (err < 0) {
platform_device_unregister(bt_platform);
return err;
}
bt_class = class_create(THIS_MODULE, "bluetooth");
if (IS_ERR(bt_class)) {
bus_unregister(&bt_bus);
platform_device_unregister(bt_platform);
return PTR_ERR(bt_class);
}
return 0;
}
void bt_sysfs_cleanup(void)
{
class_destroy(bt_class);
bus_unregister(&bt_bus);
platform_device_unregister(bt_platform);
}
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