Index: uspace/lib/drv/generic/remote_hw_res.c
===================================================================
--- uspace/lib/drv/generic/remote_hw_res.c	(revision 2e01b3f1105b1f5750b3f7d726b038336feb514e)
+++ uspace/lib/drv/generic/remote_hw_res.c	(revision ad42844f5b4dec77c5d0e09284d520693f43cd43)
@@ -46,4 +46,6 @@
 static void remote_hw_res_dma_channel_setup(ddf_fun_t *, void *, ipc_callid_t,
     ipc_call_t *);
+static void remote_hw_res_dma_channel_remain(ddf_fun_t *, void *, ipc_callid_t,
+    ipc_call_t *);
 
 static remote_iface_func_ptr_t remote_hw_res_iface_ops [] = {
@@ -51,4 +53,5 @@
 	[HW_RES_ENABLE_INTERRUPT] = &remote_hw_res_enable_interrupt,
 	[HW_RES_DMA_CHANNEL_SETUP] = &remote_hw_res_dma_channel_setup,
+	[HW_RES_DMA_CHANNEL_REMAIN] = &remote_hw_res_dma_channel_remain,
 };
 
@@ -117,4 +120,18 @@
 }
 
+static void remote_hw_res_dma_channel_remain(ddf_fun_t *fun, void *ops,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	hw_res_ops_t *hw_res_ops = ops;
+
+	if (hw_res_ops->dma_channel_setup == NULL) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+	const unsigned channel = DEV_IPC_GET_ARG1(*call);
+	uint16_t remain = 0;
+	const int ret = hw_res_ops->dma_channel_remain(fun, channel, &remain);
+	async_answer_1(callid, ret, remain);
+}
 /**
  * @}