1 files changed, 122 insertions, 0 deletions
diff --git a/test/dm/virtio.c b/test/dm/virtio.c
new file mode 100644
index 0000000000..4b317d2ec3
--- /dev/null
+++ b/test/dm/virtio.c
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <virtio_types.h>
+#include <virtio.h>
+#include <virtio_ring.h>
+#include <dm/device-internal.h>
+#include <dm/uclass-internal.h>
+#include <dm/root.h>
+#include <dm/test.h>
+#include <test/ut.h>
+
+/* Basic test of the virtio uclass */
+static int dm_test_virtio_base(struct unit_test_state *uts)
+{
+	struct udevice *bus, *dev;
+	u8 status;
+
+	/* check probe success */
+	ut_assertok(uclass_first_device(UCLASS_VIRTIO, &bus));
+
+	/* check the child virtio-blk device is bound */
+	ut_assertok(device_find_first_child(bus, &dev));
+	ut_assertok(strcmp(dev->name, "virtio-blk#0"));
+
+	/* check driver status */
+	ut_assertok(virtio_get_status(dev, &status));
+	ut_asserteq(VIRTIO_CONFIG_S_ACKNOWLEDGE, status);
+
+	return 0;
+}
+DM_TEST(dm_test_virtio_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test all of the virtio uclass ops */
+static int dm_test_virtio_all_ops(struct unit_test_state *uts)
+{
+	struct udevice *bus, *dev;
+	struct virtio_dev_priv *uc_priv;
+	uint offset = 0, len = 0, nvqs = 1;
+	void *buffer = NULL;
+	u8 status;
+	u32 counter;
+	u64 features;
+	struct virtqueue *vqs[2];
+
+	/* check probe success */
+	ut_assertok(uclass_first_device(UCLASS_VIRTIO, &bus));
+
+	/* check the child virtio-blk device is bound */
+	ut_assertok(device_find_first_child(bus, &dev));
+
+	/*
+	 * fake the virtio device probe by filling in uc_priv->vdev
+	 * which is used by virtio_find_vqs/virtio_del_vqs.
+	 */
+	uc_priv = dev_get_uclass_priv(bus);
+	uc_priv->vdev = dev;
+
+	/* test virtio_xxx APIs */
+	ut_assertok(virtio_get_config(dev, offset, buffer, len));
+	ut_assertok(virtio_set_config(dev, offset, buffer, len));
+	ut_asserteq(-ENOSYS, virtio_generation(dev, &counter));
+	ut_assertok(virtio_set_status(dev, VIRTIO_CONFIG_S_DRIVER_OK));
+	ut_assertok(virtio_get_status(dev, &status));
+	ut_asserteq(VIRTIO_CONFIG_S_DRIVER_OK, status);
+	ut_assertok(virtio_reset(dev));
+	ut_assertok(virtio_get_status(dev, &status));
+	ut_asserteq(0, status);
+	ut_assertok(virtio_get_features(dev, &features));
+	ut_asserteq(VIRTIO_F_VERSION_1, features);
+	ut_assertok(virtio_set_features(dev));
+	ut_assertok(virtio_find_vqs(dev, nvqs, vqs));
+	ut_assertok(virtio_del_vqs(dev));
+	ut_assertok(virtio_notify(dev, vqs[0]));
+
+	return 0;
+}
+DM_TEST(dm_test_virtio_all_ops, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test of the virtio driver that does not have required driver ops */
+static int dm_test_virtio_missing_ops(struct unit_test_state *uts)
+{
+	struct udevice *bus;
+
+	/* find the virtio device */
+	ut_assertok(uclass_find_device(UCLASS_VIRTIO, 1, &bus));
+
+	/*
+	 * Probe the device should fail with error -ENOENT.
+	 * See ops check in virtio_uclass_pre_probe().
+	 */
+	ut_asserteq(-ENOENT, device_probe(bus));
+
+	return 0;
+}
+DM_TEST(dm_test_virtio_missing_ops, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test removal of virtio device driver */
+static int dm_test_virtio_remove(struct unit_test_state *uts)
+{
+	struct udevice *bus, *dev;
+
+	/* check probe success */
+	ut_assertok(uclass_first_device(UCLASS_VIRTIO, &bus));
+
+	/* check the child virtio-blk device is bound */
+	ut_assertok(device_find_first_child(bus, &dev));
+
+	/* set driver status to VIRTIO_CONFIG_S_DRIVER_OK */
+	ut_assertok(virtio_set_status(dev, VIRTIO_CONFIG_S_DRIVER_OK));
+
+	/* check the device can be successfully removed */
+	dev->flags |= DM_FLAG_ACTIVATED;
+	ut_assertok(device_remove(bus, DM_REMOVE_ACTIVE_ALL));
+
+	return 0;
+}
+DM_TEST(dm_test_virtio_remove, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);