libqos: add VIRTIO PCI 1.0 support
Implement the VIRTIO 1.0 virtio-pci interface. The main change here is
that the register layout is no longer a fixed layout in BAR 0. Instead
we have to iterate of PCI Capabilities to find descriptions of where
various registers are located. The vring registers are also more
fine-grained, allowing for more flexible vring layouts, but we don't
take advantage of that.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Sergio Lopez <slp@redhat.com>
Message-Id: <20191023100425.12168-17-stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
diff --git a/tests/libqos/virtio-pci.c b/tests/libqos/virtio-pci.c
index 11866f7..62851c2 100644
--- a/tests/libqos/virtio-pci.c
+++ b/tests/libqos/virtio-pci.c
@@ -22,6 +22,8 @@
#include "hw/pci/pci.h"
#include "hw/pci/pci_regs.h"
+#include "virtio-pci-modern.h"
+
/* virtio-pci is a superclass of all virtio-xxx-pci devices;
* the relation between virtio-pci and virtio-xxx-pci is implicit,
* and therefore virtio-pci does not produce virtio and is not
@@ -401,7 +403,9 @@
dev->pdev = pci_dev;
dev->config_msix_entry = -1;
- qvirtio_pci_init_legacy(dev);
+ if (!qvirtio_pci_init_virtio_1(dev)) {
+ qvirtio_pci_init_legacy(dev);
+ }
/* each virtio-xxx-pci device should override at least this function */
dev->obj.get_driver = NULL;
