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libqos: Added indirect descriptor support to virtio implementation

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Add functions necessary for working with indirect descriptors.
Add test using new functions.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Marc Marí <marc.mari.barcelo@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Marc Marí 2014-09-01 12:07:57 +02:00 • committed by Stefan Hajnoczi
parent bf3c63d201
commit f294b029aa
4 changed files with 195 additions and 1 deletions
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10
tests/libqos/virtio-pci.c
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@ -107,6 +107,12 @@ static void qvirtio_pci_set_features(QVirtioDevice *d, uint32_t features)
qpci_io_writel(dev->pdev, dev->addr + QVIRTIO_GUEST_FEATURES, features);
}
static uint32_t qvirtio_pci_get_guest_features(QVirtioDevice *d)
{
QVirtioPCIDevice *dev = (QVirtioPCIDevice *)d;
return qpci_io_readl(dev->pdev, dev->addr + QVIRTIO_GUEST_FEATURES);
}
static uint8_t qvirtio_pci_get_status(QVirtioDevice *d)
{
QVirtioPCIDevice *dev = (QVirtioPCIDevice *)d;
@ -146,10 +152,12 @@ static void qvirtio_pci_set_queue_address(QVirtioDevice *d, uint32_t pfn)
static QVirtQueue *qvirtio_pci_virtqueue_setup(QVirtioDevice *d,
QGuestAllocator *alloc, uint16_t index)
{
uint32_t feat;
uint64_t addr;
QVirtQueue *vq;
vq = g_malloc0(sizeof(*vq));
feat = qvirtio_pci_get_guest_features(d);
qvirtio_pci_queue_select(d, index);
vq->index = index;
@ -157,6 +165,7 @@ static QVirtQueue *qvirtio_pci_virtqueue_setup(QVirtioDevice *d,
vq->free_head = 0;
vq->num_free = vq->size;
vq->align = QVIRTIO_PCI_ALIGN;
vq->indirect = (feat & QVIRTIO_F_RING_INDIRECT_DESC) != 0;
/* Check different than 0 */
g_assert_cmpint(vq->size, !=, 0);
@ -186,6 +195,7 @@ const QVirtioBus qvirtio_pci = {
.config_readq = qvirtio_pci_config_readq,
.get_features = qvirtio_pci_get_features,
.set_features = qvirtio_pci_set_features,
.get_guest_features = qvirtio_pci_get_guest_features,
.get_status = qvirtio_pci_get_status,
.set_status = qvirtio_pci_set_status,
.get_isr_status = qvirtio_pci_get_isr_status,