Changeset 84de606d in mainline

Timestamp:

2011-05-08T13:37:16Z (13 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

eb2f7dd

Parents:

79784ef8

Message:

Device keeper can tell handle by USB address

Location:

uspace/lib/usb

Files:

• include/usb/host/device_keeper.h (modified) (1 diff)
• src/host/device_keeper.c (modified) (1 diff)

uspace/lib/usb/include/usb/host/device_keeper.h

@@ -80 +80 @@
     devman_handle_t handle);
 
+bool usb_device_keeper_find_by_address(usb_device_keeper_t *instance,
+    usb_address_t address, devman_handle_t *handle);
+
 usb_speed_t usb_device_keeper_get_speed(usb_device_keeper_t *instance,
     usb_address_t address);

uspace/lib/usb/src/host/device_keeper.c

@@ -157 +157 @@
         return ENOENT;
 }
+
+/** Find devman handled assigned to USB address.
+ *
+ * @param[in] instance Device keeper structure to use.
+ * @param[in] address Address the caller wants to find.
+ * @param[out] handle Where to store found handle.
+ * @return Whether such address is currently occupied.
+ */
+bool usb_device_keeper_find_by_address(usb_device_keeper_t *instance,
+    usb_address_t address, devman_handle_t *handle)
+{
+        assert(instance);
+        fibril_mutex_lock(&instance->guard);
+        if ((address < 0) || (address >= USB_ADDRESS_COUNT)) {
+                fibril_mutex_unlock(&instance->guard);
+                return false;
+        }
+        if (!instance->devices[address].occupied) {
+                fibril_mutex_unlock(&instance->guard);
+                return false;
+        }
+
+        if (handle != NULL) {
+                *handle = instance->devices[address].handle;
+        }
+
+        fibril_mutex_unlock(&instance->guard);
+        return true;
+}
+
 /*----------------------------------------------------------------------------*/
 /** Get speed associated with the address