9da9560c4d
Use the existing legacy PCI driver as the basis for shared code between the legacy and modern PCI drivers. The existing virtio_pci kernel module will contain both the legacy and modern drivers. Changes to the virtqueue and each device driver (network, block, etc) for V1 support come in later commits. Update the MMIO driver to reflect the VirtIO bus method changes, but the modern compliance can be improved on later. Note that the modern PCI driver requires bus_map_resource() to be implemented, which is not the case on all archs. The hw.virtio.pci.transitional tunable default value is zero so transitional devices will continue to be driven via the legacy driver. Reviewed by: grehan (mentor) Differential Revision: https://reviews.freebsd.org/D27856
118 lines
2.6 KiB
Objective-C
118 lines
2.6 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_finalize_features(device_t dev)
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{
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return (0);
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}
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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 finalize_features {
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device_t dev;
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} DEFAULT virtio_bus_default_finalize_features;
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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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bus_size_t offset;
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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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