985ed053e3
VirtIO buses (PCI, MMIO) can provide a generation field so a driver can ensure either a 64-bit or array read was stable. MFC after: 2 weeks
107 lines
2.4 KiB
Objective-C
107 lines
2.4 KiB
Objective-C
#-
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# Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#include <sys/bus.h>
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#include <machine/bus.h>
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INTERFACE virtio_bus;
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HEADER {
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struct vq_alloc_info;
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};
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CODE {
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static int
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virtio_bus_default_config_generation(device_t dev)
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{
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return (0);
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}
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};
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METHOD uint64_t negotiate_features {
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device_t dev;
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uint64_t child_features;
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};
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METHOD int with_feature {
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device_t dev;
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uint64_t feature;
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};
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METHOD int alloc_virtqueues {
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device_t dev;
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int flags;
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int nvqs;
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struct vq_alloc_info *info;
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};
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METHOD int setup_intr {
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device_t dev;
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enum intr_type type;
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};
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METHOD void stop {
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device_t dev;
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};
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METHOD int reinit {
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device_t dev;
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uint64_t features;
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};
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METHOD void reinit_complete {
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device_t dev;
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};
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METHOD void notify_vq {
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device_t dev;
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uint16_t queue;
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};
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METHOD int config_generation {
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device_t dev;
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} DEFAULT virtio_bus_default_config_generation;
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METHOD void read_device_config {
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device_t dev;
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bus_size_t offset;
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void *dst;
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int len;
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};
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METHOD void write_device_config {
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device_t dev;
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bus_size_t offset;
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void *src;
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int len;
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};
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METHOD void poll {
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device_t dev;
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};
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