2017-06-05 11:15:45 +02:00
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/*
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* Copyright (c) 2017, Stefan Lankes, RWTH Aachen University
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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 are met:
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* * 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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* * 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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* * Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __NET_VIOIF_H__
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#define __NET_VIOIF_H__
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#include <hermit/stddef.h>
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#include <hermit/virtio_ring.h>
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#define VIOIF_NUM_QUEUES 2
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typedef struct
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{
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struct vring vring;
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uint64_t virt_buffer;
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uint64_t phys_buffer;
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uint16_t last_seen_used;
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} virt_queue_t;
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/*
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* Helper struct to hold private data used to operate your ethernet interface.
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*/
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typedef struct vioif {
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struct eth_addr *ethaddr;
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/* Add whatever per-interface state that is needed here. */
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uint32_t iomem;
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uint32_t iobase;
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2017-06-10 09:31:48 +02:00
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uint32_t features;
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2017-06-05 11:15:45 +02:00
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uint8_t msix_enabled;
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uint8_t irq;
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uint8_t polling;
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virt_queue_t queues[VIOIF_NUM_QUEUES];
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} vioif_t;
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/*
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* Initialize the network driver for the virtio network interface
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*/
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err_t vioif_init(struct netif* netif);
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#endif
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