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tests/virtio-blk-test: read config space after feature negotiation 

The VIRTIO Configuration Space cannot be accessed before device feature
bits have been read because a driver doesn't know the endianness until
it has checked VIRTIO_F_VERSION_1.

Fix this problem in preparation for VIRTIO 1.0 support.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20191023100425.12168-2-stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pull/85/head
Stefan Hajnoczi 7 years ago
committed by Michael S. Tsirkin
parent
74b3e46630
commit
c42bf5f210
1 changed files with 20 additions and 13 deletions
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  1. 33
      tests/virtio-blk-test.c

33
tests/virtio-blk-test.c
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@ -125,10 +125,6 @@ static void test_basic(QVirtioDevice *dev, QGuestAllocator *alloc,
char *data;
QTestState *qts = global_qtest;
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
features = qvirtio_get_features(dev);
features = features & ~(QVIRTIO_F_BAD_FEATURE |
(1u << VIRTIO_RING_F_INDIRECT_DESC) |
@ -136,6 +132,9 @@ static void test_basic(QVirtioDevice *dev, QGuestAllocator *alloc,
(1u << VIRTIO_BLK_F_SCSI));
qvirtio_set_features(dev, features);
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
qvirtio_set_driver_ok(dev);
/* Write and read with 3 descriptor layout */
@ -359,9 +358,6 @@ static void indirect(void *obj, void *u_data, QGuestAllocator *t_alloc)
char *data;
QTestState *qts = global_qtest;
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
features = qvirtio_get_features(dev);
g_assert_cmphex(features & (1u << VIRTIO_RING_F_INDIRECT_DESC), !=, 0);
features = features & ~(QVIRTIO_F_BAD_FEATURE |
@ -369,6 +365,9 @@ static void indirect(void *obj, void *u_data, QGuestAllocator *t_alloc)
(1u << VIRTIO_BLK_F_SCSI));
qvirtio_set_features(dev, features);
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
vq = qvirtqueue_setup(dev, t_alloc, 0);
qvirtio_set_driver_ok(dev);
@ -434,8 +433,16 @@ static void config(void *obj, void *data, QGuestAllocator *t_alloc)
QVirtioBlk *blk_if = obj;
QVirtioDevice *dev = blk_if->vdev;
int n_size = TEST_IMAGE_SIZE / 2;
uint64_t features;
uint64_t capacity;
features = qvirtio_get_features(dev);
features = features & ~(QVIRTIO_F_BAD_FEATURE |
(1u << VIRTIO_RING_F_INDIRECT_DESC) |
(1u << VIRTIO_RING_F_EVENT_IDX) |
(1u << VIRTIO_BLK_F_SCSI));
qvirtio_set_features(dev, features);
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
@ -475,9 +482,6 @@ static void msix(void *obj, void *u_data, QGuestAllocator *t_alloc)
qpci_msix_enable(pdev->pdev);
qvirtio_pci_set_msix_configuration_vector(pdev, t_alloc, 0);
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
features = qvirtio_get_features(dev);
features = features & ~(QVIRTIO_F_BAD_FEATURE |
(1u << VIRTIO_RING_F_INDIRECT_DESC) |
@ -485,6 +489,9 @@ static void msix(void *obj, void *u_data, QGuestAllocator *t_alloc)
(1u << VIRTIO_BLK_F_SCSI));
qvirtio_set_features(dev, features);
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
vq = qvirtqueue_setup(dev, t_alloc, 0);
qvirtqueue_pci_msix_setup(pdev, (QVirtQueuePCI *)vq, t_alloc, 1);
@ -584,9 +591,6 @@ static void idx(void *obj, void *u_data, QGuestAllocator *t_alloc)
qpci_msix_enable(pdev->pdev);
qvirtio_pci_set_msix_configuration_vector(pdev, t_alloc, 0);
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
features = qvirtio_get_features(dev);
features = features & ~(QVIRTIO_F_BAD_FEATURE |
(1u << VIRTIO_RING_F_INDIRECT_DESC) |
@ -594,6 +598,9 @@ static void idx(void *obj, void *u_data, QGuestAllocator *t_alloc)
(1u << VIRTIO_BLK_F_SCSI));
qvirtio_set_features(dev, features);
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
vq = qvirtqueue_setup(dev, t_alloc, 0);
qvirtqueue_pci_msix_setup(pdev, (QVirtQueuePCI *)vq, t_alloc, 1);

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