diff options
Diffstat (limited to 'src/dev/virtio/pci.cc')
| -rw-r--r-- | src/dev/virtio/pci.cc | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/dev/virtio/pci.cc b/src/dev/virtio/pci.cc index d8ec4f5f8..783b43e65 100644 --- a/src/dev/virtio/pci.cc +++ b/src/dev/virtio/pci.cc @@ -1,5 +1,5 @@ /* - * Copyright (c) 2014 ARM Limited + * Copyright (c) 2014, 2017 ARM Limited * All rights reserved * * The license below extends only to copyright in the software and shall @@ -39,6 +39,7 @@ #include "dev/virtio/pci.hh" +#include "base/bitfield.hh" #include "debug/VIOIface.hh" #include "mem/packet_access.hh" #include "params/PciVirtIO.hh" @@ -49,7 +50,12 @@ PciVirtIO::PciVirtIO(const Params *params) { // Override the subsystem ID with the device ID from VirtIO config.subsystemID = htole(vio.deviceId); - BARSize[0] = BAR0_SIZE_BASE + vio.configSize; + + // The kernel driver expects the BAR size to be an exact power of + // two. Nothing else is supported. Therefore, we need to force + // that alignment here. We do not touch vio.configSize as this is + // used to check accesses later on. + BARSize[0] = alignToPowerOfTwo(BAR0_SIZE_BASE + vio.configSize); vio.registerKickCallback(&callbackKick); } |