Virtio 1.0 allows a more flexible virtio ring layout, so we have to set
addresses for descriptors avail flags and use flags separately. We
continue to use a ring layout compatible with virtio 0.9.5 though, so no
other changes are needed to setup the virtio queues.
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
.../VirtioMmioDeviceFunctions.c | 27 +++++++++++++++++--
1 file changed, 25 insertions(+), 2 deletions(-)
diff --git a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c
b/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c
index 50a4fd2100ee..a0ee8e5f3c86 100644
--- a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c
+++ b/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c
@@ -183,13 +183,36 @@ VirtioMmioSetQueueAddress (
)
{
VIRTIO_MMIO_DEVICE *Device;
+ UINT64 Address;
ASSERT (RingBaseShift == 0);
Device = VIRTIO_MMIO_DEVICE_FROM_VIRTIO_DEVICE (This);
- VIRTIO_CFG_WRITE (Device, VIRTIO_MMIO_OFFSET_QUEUE_PFN,
- (UINT32)((UINTN)Ring->Base >> EFI_PAGE_SHIFT));
+ if (Device->Version == VIRTIO_MMIO_DEVICE_VERSION_0_95) {
+ VIRTIO_CFG_WRITE (Device, VIRTIO_MMIO_OFFSET_QUEUE_PFN,
+ (UINT32)((UINTN)Ring->Base >> EFI_PAGE_SHIFT));
+ } else {
+ Address = (UINT64)Ring->Base;
+ VIRTIO_CFG_WRITE (Device, VIRTIO_MMIO_OFFSET_QUEUE_DESC_LO,
+ (UINT32)Address);
+ VIRTIO_CFG_WRITE (Device, VIRTIO_MMIO_OFFSET_QUEUE_DESC_HI,
+ (UINT32)RShiftU64(Address, 32));
+
+ Address = (UINT64)Ring->Avail.Flags;
+ VIRTIO_CFG_WRITE (Device, VIRTIO_MMIO_OFFSET_QUEUE_AVAIL_LO,
+ (UINT32)Address);
+ VIRTIO_CFG_WRITE (Device, VIRTIO_MMIO_OFFSET_QUEUE_AVAIL_HI,
+ (UINT32)RShiftU64(Address, 32));
+
+ Address = (UINT64)Ring->Used.Flags;
+ VIRTIO_CFG_WRITE (Device, VIRTIO_MMIO_OFFSET_QUEUE_USED_LO,
+ (UINT32)Address);
+ VIRTIO_CFG_WRITE (Device, VIRTIO_MMIO_OFFSET_QUEUE_USED_HI,
+ (UINT32)RShiftU64(Address, 32));
+
+ VIRTIO_CFG_WRITE (Device, VIRTIO_MMIO_OFFSET_QUEUE_READY, 1);
+ }
return EFI_SUCCESS;
}
--
2.31.1
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