The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/virtio/virtio_bus_if.m

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    1 #-
    2 # Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
    3 # All rights reserved.
    4 #
    5 # Redistribution and use in source and binary forms, with or without
    6 # modification, are permitted provided that the following conditions
    7 # are met:
    8 # 1. Redistributions of source code must retain the above copyright
    9 #    notice, this list of conditions and the following disclaimer.
   10 # 2. Redistributions in binary form must reproduce the above copyright
   11 #    notice, this list of conditions and the following disclaimer in the
   12 #    documentation and/or other materials provided with the distribution.
   13 #
   14 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17 # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24 # SUCH DAMAGE.
   25 #
   26 # $FreeBSD$
   27 
   28 #include <sys/bus.h>
   29 #include <machine/bus.h>
   30 
   31 INTERFACE virtio_bus;
   32 
   33 HEADER {
   34 struct vq_alloc_info;
   35 };
   36 
   37 CODE {
   38         static int
   39         virtio_bus_default_finalize_features(device_t dev)
   40         {
   41                 return (0);
   42         }
   43 
   44         static int
   45         virtio_bus_default_config_generation(device_t dev)
   46         {
   47                 return (0);
   48         }
   49 };
   50 
   51 METHOD uint64_t negotiate_features {
   52         device_t        dev;
   53         uint64_t        child_features;
   54 };
   55 
   56 METHOD int finalize_features {
   57         device_t        dev;
   58 } DEFAULT virtio_bus_default_finalize_features;
   59 
   60 METHOD int with_feature {
   61         device_t        dev;
   62         uint64_t        feature;
   63 };
   64 
   65 METHOD int alloc_virtqueues {
   66         device_t        dev;
   67         int             flags;
   68         int             nvqs;
   69         struct vq_alloc_info *info;
   70 };
   71 
   72 METHOD int setup_intr {
   73         device_t        dev;
   74         enum intr_type  type;
   75 };
   76 
   77 METHOD void stop {
   78         device_t        dev;
   79 };
   80 
   81 METHOD int reinit {
   82         device_t        dev;
   83         uint64_t        features;
   84 };
   85 
   86 METHOD void reinit_complete {
   87         device_t        dev;
   88 };
   89 
   90 METHOD void notify_vq {
   91         device_t        dev;
   92         uint16_t        queue;
   93         bus_size_t      offset;
   94 };
   95 
   96 METHOD int config_generation {
   97         device_t        dev;
   98 } DEFAULT virtio_bus_default_config_generation;
   99 
  100 METHOD void read_device_config {
  101         device_t        dev;
  102         bus_size_t      offset;
  103         void            *dst;
  104         int             len;
  105 };
  106 
  107 METHOD void write_device_config {
  108         device_t        dev;
  109         bus_size_t      offset;
  110         const void      *src;
  111         int             len;
  112 };
  113 
  114 METHOD void poll {
  115         device_t        dev;
  116 };
  117 

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