diff --git a/headers/private/drivers/mmc.h b/headers/private/drivers/mmc.h
index 8638e5fe1e..2723962192 100644
--- a/headers/private/drivers/mmc.h
+++ b/headers/private/drivers/mmc.h
@@ -35,4 +35,13 @@ typedef struct mmc_bus_interface {
 } mmc_bus_interface;
 
 
+// Interface between mmc device driver (mmc_disk, sdio drivers, ...) and mmc_bus
+typedef struct mmc_device_interface {
+	driver_module_info info;
+
+	status_t (*execute_command)(device_node* node, uint8_t command,
+		uint32_t argument, uint32_t* result);
+} mmc_device_interface;
+
+
 #endif /* _MMC_H */
diff --git a/src/add-ons/kernel/bus_managers/mmc/mmc_bus.cpp b/src/add-ons/kernel/bus_managers/mmc/mmc_bus.cpp
index cf289fdd30..b756861d74 100644
--- a/src/add-ons/kernel/bus_managers/mmc/mmc_bus.cpp
+++ b/src/add-ons/kernel/bus_managers/mmc/mmc_bus.cpp
@@ -178,6 +178,7 @@ MMCBus::WorkerThread(void* cookie)
 			
 			device_attr attrs[] = {
 				{ B_DEVICE_BUS, B_STRING_TYPE, {string: "mmc" }},
+				{ B_DEVICE_PRETTY_NAME, B_STRING_TYPE, {string: "mmc device" }},
 				{ B_DEVICE_VENDOR_ID, B_UINT32_TYPE, {ui32: vendor}},
 				{ B_DEVICE_ID, B_STRING_TYPE, {string: name}},
 				{ B_DEVICE_UNIQUE_ID, B_UINT32_TYPE, {ui32: serial}},
diff --git a/src/add-ons/kernel/bus_managers/mmc/mmc_module.cpp b/src/add-ons/kernel/bus_managers/mmc/mmc_module.cpp
index cb917f8d53..5104f874ad 100644
--- a/src/add-ons/kernel/bus_managers/mmc/mmc_module.cpp
+++ b/src/add-ons/kernel/bus_managers/mmc/mmc_module.cpp
@@ -78,6 +78,27 @@ mmc_bus_added_device(device_node* parent)
 }
 
 
+static status_t
+mmc_bus_execute_command(device_node* node, uint8_t command, uint32_t argument,
+	uint32_t* result)
+{
+	// FIXME store these in the bus cookie or something instead of
+	// getting/putting the parents each time.
+	mmc_bus_interface* sdhci;
+	void* cookie;
+
+	TRACE("In mmc_bus_execute_command\n");
+	device_node* parent = gDeviceManager->get_parent_node(node);
+	device_node* grandparent = gDeviceManager->get_parent_node(parent);
+	gDeviceManager->get_driver(grandparent, (driver_module_info**)&sdhci,
+		&cookie);
+	gDeviceManager->put_node(grandparent);
+	gDeviceManager->put_node(parent);
+
+	return sdhci->execute_command(cookie, command, argument, result);
+}
+
+
 static status_t
 std_ops(int32 op, ...)
 {
@@ -113,18 +134,21 @@ driver_module_info mmc_bus_device_module = {
 };
 
 
-driver_module_info mmc_bus_controller_module = {
+mmc_device_interface mmc_bus_controller_module = {
 	{
-		MMC_BUS_MODULE_NAME,
-		0,
-		&std_ops
-	},
+		{
+			MMC_BUS_MODULE_NAME,
+			0,
+			&std_ops
+		},
 
-	NULL, // supported devices
-	mmc_bus_added_device,
-	NULL,
-	NULL,
-	NULL
+		NULL, // supported devices
+		mmc_bus_added_device,
+		NULL,
+		NULL,
+		NULL
+	},
+	mmc_bus_execute_command
 };