2 # Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com>
5 # This software was developed by SRI International and the University of
6 # Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
7 # ("CTSRD"), as part of the DARPA CRASH research programme.
9 # Redistribution and use in source and binary forms, with or without
10 # modification, are permitted provided that the following conditions
12 # 1. Redistributions of source code must retain the above copyright
13 # notice, this list of conditions and the following disclaimer.
14 # 2. Redistributions in binary form must reproduce the above copyright
15 # notice, this list of conditions and the following disclaimer in the
16 # documentation and/or other materials provided with the distribution.
18 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/types.h>
36 # This is optional interface to virtio mmio backend.
37 # Useful when backend is implemented not by the hardware but software, e.g.
38 # by using another cpu core.
41 INTERFACE virtio_mmio;
45 virtio_mmio_prewrite(device_t dev, size_t offset, int val)
52 virtio_mmio_note(device_t dev, size_t offset, int val)
59 virtio_mmio_setup_intr(device_t dev, device_t mmio_dev,
60 void *handler, void *ih_user)
68 # Inform backend we are going to write data at offset.
74 } DEFAULT virtio_mmio_prewrite;
77 # Inform backend we have data wrotten to offset.
83 } DEFAULT virtio_mmio_note;
86 # Inform backend we are going to poll virtqueue.
93 # Setup backend-specific interrupts.
95 METHOD int setup_intr {
100 } DEFAULT virtio_mmio_setup_intr;