Index: uspace/lib/c/generic/device/hw_res.c
===================================================================
--- uspace/lib/c/generic/device/hw_res.c	(revision 00d7e1bfe06501df61aed156666d5597397d910a)
+++ uspace/lib/c/generic/device/hw_res.c	(revision ec388d7bc30b416ee3ef0dad317b1b85f8dc3926)
@@ -84,4 +84,18 @@
 }
 
+int hw_res_dma_channel_setup(async_sess_t *sess,
+    unsigned channel, uint32_t pa, uint16_t size, uint8_t mode)
+{
+	async_exch_t *exch = async_exchange_begin(sess);
+	if (exch == NULL)
+		return ENOMEM;
+	uint32_t packed = size | (mode << 16);
+	int ret = async_req_4_0(exch, DEV_IFACE_ID(HW_RES_DEV_IFACE),
+	    HW_RES_DMA_CHANNEL_SETUP, channel, pa, packed);
+	async_exchange_end(exch);
+	
+	return ret;
+}
+
 /** @}
  */