test: dm: virtio: Split out virtio device tests
Virtio tests that find a child device require the virtio device driver
to be included in the build so it can probe. The sandbox virtio
transport driver currently reports a virtio-blk device so make sure the
corresponding driver is built before running tests that need it.
Signed-off-by: Andrew Scull <ascull@google.com>
diff --git a/test/dm/virtio_device.c b/test/dm/virtio_device.c
new file mode 100644
index 0000000..46f4798
--- /dev/null
+++ b/test/dm/virtio_device.c
@@ -0,0 +1,186 @@
+// 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/root.h>
+#include <dm/test.h>
+#include <dm/uclass-internal.h>
+#include <test/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));
+ ut_assertnonnull(bus);
+
+ /* check the child virtio-blk device is bound */
+ ut_assertok(device_find_first_child(bus, &dev));
+ ut_assertnonnull(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, UT_TESTF_SCAN_PDATA | UT_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));
+ ut_assertnonnull(bus);
+
+ /* check the child virtio-rng device is bound */
+ ut_assertok(device_find_first_child(bus, &dev));
+ ut_assertnonnull(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);
+ ut_assertnonnull(uc_priv);
+ 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_64(BIT_ULL(VIRTIO_F_VERSION_1), features);
+ ut_assertok(virtio_set_features(dev));
+ ut_assertok(virtio_find_vqs(dev, nvqs, vqs));
+ ut_assertok(virtio_notify(dev, vqs[0]));
+ ut_assertok(virtio_del_vqs(dev));
+
+ return 0;
+}
+DM_TEST(dm_test_virtio_all_ops, UT_TESTF_SCAN_PDATA | UT_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));
+ ut_assertnonnull(bus);
+
+ /* check the child virtio-rng device is bound */
+ ut_assertok(device_find_first_child(bus, &dev));
+ ut_assertnonnull(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_or_flags(dev, DM_FLAG_ACTIVATED);
+ ut_asserteq(-EKEYREJECTED, device_remove(bus, DM_REMOVE_ACTIVE_ALL));
+
+ ut_asserteq(false, device_active(dev));
+
+ return 0;
+}
+DM_TEST(dm_test_virtio_remove, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
+
+/* Test all of the virtio ring */
+static int dm_test_virtio_ring(struct unit_test_state *uts)
+{
+ struct udevice *bus, *dev;
+ struct virtio_dev_priv *uc_priv;
+ struct virtqueue *vq;
+ struct virtio_sg sg[2];
+ struct virtio_sg *sgs[2];
+ unsigned int len;
+ u8 buffer[2][32];
+
+ /* check probe success */
+ ut_assertok(uclass_first_device(UCLASS_VIRTIO, &bus));
+ ut_assertnonnull(bus);
+
+ /* check the child virtio-blk device is bound */
+ ut_assertok(device_find_first_child(bus, &dev));
+ ut_assertnonnull(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);
+ ut_assertnonnull(uc_priv);
+ uc_priv->vdev = dev;
+
+ /* prepare the scatter-gather buffer */
+ sg[0].addr = buffer[0];
+ sg[0].length = sizeof(buffer[0]);
+ sg[1].addr = buffer[1];
+ sg[1].length = sizeof(buffer[1]);
+ sgs[0] = &sg[0];
+ sgs[1] = &sg[1];
+
+ /* read a buffer and report written size from device */
+ ut_assertok(virtio_find_vqs(dev, 1, &vq));
+ ut_assertok(virtqueue_add(vq, sgs, 0, 1));
+ vq->vring.used->idx = 1;
+ vq->vring.used->ring[0].id = 0;
+ vq->vring.used->ring[0].len = 0x53355885;
+ ut_asserteq_ptr(buffer, virtqueue_get_buf(vq, &len));
+ ut_asserteq(0x53355885, len);
+ ut_assertok(virtio_del_vqs(dev));
+
+ /* rejects used descriptors that aren't a chain head */
+ ut_assertok(virtio_find_vqs(dev, 1, &vq));
+ ut_assertok(virtqueue_add(vq, sgs, 0, 2));
+ vq->vring.used->idx = 1;
+ vq->vring.used->ring[0].id = 1;
+ vq->vring.used->ring[0].len = 0x53355885;
+ ut_assertnull(virtqueue_get_buf(vq, &len));
+ ut_assertok(virtio_del_vqs(dev));
+
+ /* device changes to descriptor are ignored */
+ ut_assertok(virtio_find_vqs(dev, 1, &vq));
+ ut_assertok(virtqueue_add(vq, sgs, 0, 1));
+ vq->vring.desc[0].addr = cpu_to_virtio64(dev, 0xbadbad11);
+ vq->vring.desc[0].len = cpu_to_virtio32(dev, 0x11badbad);
+ vq->vring.desc[0].flags = cpu_to_virtio16(dev, VRING_DESC_F_NEXT);
+ vq->vring.desc[0].next = cpu_to_virtio16(dev, U16_MAX);
+ vq->vring.used->idx = 1;
+ vq->vring.used->ring[0].id = 0;
+ vq->vring.used->ring[0].len = 6;
+ ut_asserteq_ptr(buffer, virtqueue_get_buf(vq, &len));
+ ut_asserteq(6, len);
+ ut_assertok(virtio_del_vqs(dev));
+
+ return 0;
+}
+DM_TEST(dm_test_virtio_ring, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);