Bluetooth: Add controller types for BR/EDR and 802.11 AMP

With the Bluetooth 3.0 specification and the introduction of alternate
MAC/PHY (AMP) support, it is required to differentiate between primary
BR/EDR controllers and 802.11 AMP controllers. So introduce a special
type inside HCI device for differentiation.

For now all AMP controllers will be treated as raw devices until an
AMP manager has been implemented.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

4 files changed, 30 insertions, 1 deletions

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 3350a665180f..fc0c502d9fd1 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -52,6 +52,10 @@
 #define HCI_PCI         5
 #define HCI_SDIO        6
 
+/* HCI controller types */
+#define HCI_BREDR       0x00
+#define HCI_80211       0x01
+
 /* HCI device quirks */
 enum {
         HCI_QUIRK_NO_RESET,
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 4c94c1e233a2..ce3c99e5fa25 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -71,6 +71,7 @@ struct hci_dev {
         unsigned long   flags;
         __u16           id;
         __u8            bus;
+        __u8            dev_type;
         bdaddr_t        bdaddr;
         __u8            dev_name[248];
         __u8            dev_class[3];
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 4b62ed01ddc6..4ad23192c7a5 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -491,6 +491,10 @@ int hci_dev_open(__u16 dev)
         if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
                 set_bit(HCI_RAW, &hdev->flags);
 
+        /* Treat all non BR/EDR controllers as raw devices for now */
+        if (hdev->dev_type != HCI_BREDR)
+                set_bit(HCI_RAW, &hdev->flags);
+
         if (hdev->open(hdev)) {
                 ret = -EIO;
                 goto done;
@@ -797,7 +801,7 @@ int hci_get_dev_info(void __user *arg)
 
         strcpy(di.name, hdev->name);
         di.bdaddr   = hdev->bdaddr;
-        di.type     = hdev->bus;
+        di.type     = (hdev->bus & 0x0f) | (hdev->dev_type << 4);
         di.flags    = hdev->flags;
         di.pkt_type = hdev->pkt_type;
         di.acl_mtu  = hdev->acl_mtu;
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index f9d93f9cbcd2..1a79a6c7e30e 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -192,12 +192,30 @@ static inline char *host_bustostr(int bus)
         }
 }
 
+static inline char *host_typetostr(int type)
+{
+        switch (type) {
+        case HCI_BREDR:
+                return "BR/EDR";
+        case HCI_80211:
+                return "802.11";
+        default:
+                return "UNKNOWN";
+        }
+}
+
 static ssize_t show_bus(struct device *dev, struct device_attribute *attr, char *buf)
 {
         struct hci_dev *hdev = dev_get_drvdata(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 = dev_get_drvdata(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 = dev_get_drvdata(dev);
@@ -334,6 +352,7 @@ static ssize_t store_sniff_min_interval(struct device *dev, struct device_attrib
 }
 
 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);
@@ -351,6 +370,7 @@ static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR,
 
 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,