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Diffstat (limited to 'src/dev/virtio/pci.hh')
-rw-r--r-- | src/dev/virtio/pci.hh | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/dev/virtio/pci.hh b/src/dev/virtio/pci.hh new file mode 100644 index 000000000..be5a140e2 --- /dev/null +++ b/src/dev/virtio/pci.hh @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2014 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Andreas Sandberg + */ + +#ifndef __DEV_VIRTIO_PCI_HH__ +#define __DEV_VIRTIO_PCI_HH__ + +#include "base/statistics.hh" +#include "dev/virtio/base.hh" +#include "dev/pcidev.hh" + +struct PciVirtIOParams; + +class PciVirtIO : public PciDevice +{ + public: + typedef PciVirtIOParams Params; + PciVirtIO(const Params *params); + virtual ~PciVirtIO(); + + Tick read(PacketPtr pkt); + Tick write(PacketPtr pkt); + + void kick(); + + protected: + /** @{ */ + /** Offsets into VirtIO header (BAR0 relative). */ + + static const Addr OFF_DEVICE_FEATURES = 0x00; + static const Addr OFF_GUEST_FEATURES = 0x04; + static const Addr OFF_QUEUE_ADDRESS = 0x08; + static const Addr OFF_QUEUE_SIZE = 0x0C; + static const Addr OFF_QUEUE_SELECT = 0x0E; + static const Addr OFF_QUEUE_NOTIFY = 0x10; + static const Addr OFF_DEVICE_STATUS = 0x12; + static const Addr OFF_ISR_STATUS = 0x13; + static const Addr OFF_VIO_DEVICE = 0x14; + + /** @} */ + + static const Addr BAR0_SIZE_BASE = OFF_VIO_DEVICE; + + + VirtIODeviceBase::QueueID queueNotify; + + bool interruptDeliveryPending; + + VirtIODeviceBase &vio; + + MakeCallback<PciVirtIO, &PciVirtIO::kick> callbackKick; +}; + +#endif // __DEV_VIRTIO_PCI_HH__ |