freebsd-nq/sys/dev/virtio/pci/virtio_pci_if.m
Bryan Venteicher 9da9560c4d virtio: Add VirtIO PCI modern (V1) support
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
2021-01-19 04:55:23 +00:00

72 lines
1.9 KiB
Objective-C

#-
# Copyright (c) 2017, Bryan Venteicher <bryanv@FreeBSD.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. 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.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
#
# $FreeBSD$
#include <sys/bus.h>
#include <machine/bus.h>
INTERFACE virtio_pci;
HEADER {
struct virtqueue;
struct vtpci_interrupt;
};
METHOD uint8_t read_isr {
device_t dev;
};
METHOD uint16_t get_vq_size {
device_t dev;
int idx;
};
METHOD bus_size_t get_vq_notify_off {
device_t dev;
int idx;
};
METHOD void set_vq {
device_t dev;
struct virtqueue *vq;
};
METHOD void disable_vq {
device_t dev;
int idx;
};
METHOD int register_cfg_msix {
device_t dev;
struct vtpci_interrupt *intr;
};
METHOD int register_vq_msix {
device_t dev;
int idx;
struct vtpci_interrupt *intr;
};