e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * Copyright (c) 2010 Minoura Makoto.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * All rights reserved.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * Redistribution and use in source and binary forms, with or without
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * modification, are permitted provided that the following conditions
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * 1. Redistributions of source code must retain the above copyright
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * notice, this list of conditions and the following disclaimer.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * 2. Redistributions in binary form must reproduce the above copyright
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * notice, this list of conditions and the following disclaimer in the
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * documentation and/or other materials provided with the distribution.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * Part of the file derived from `Virtio PCI Card Specification v0.8.6 DRAFT'
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * Appendix A.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * An interface for efficient virtio implementation.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * This header is BSD licensed so anyone can use the definitions
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * to implement compatible drivers/servers.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * Copyright 2007, 2009, IBM Corporation
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * All rights reserved.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * Redistribution and use in source and binary forms, with or without
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * modification, are permitted provided that the following conditions
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * 1. Redistributions of source code must retain the above copyright
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * notice, this list of conditions and the following disclaimer.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * 2. Redistributions in binary form must reproduce the above copyright
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * notice, this list of conditions and the following disclaimer in the
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * documentation and/or other materials provided with the distribution.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * 3. Neither the name of IBM nor the names of its contributors
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * may be used to endorse or promote products derived from this software
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * without specific prior written permission.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * ``AS IS'' ANDANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * SUCH DAMAGE.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev * Copyright 2012 Nexenta Systems, Inc. All rights reserved.
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev uint16_t qe_index; /* index in vq_desc array */
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev /* followings are used only when it is the `head' entry */
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev unsigned int vq_num; /* queue size (# of entries) */
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev /* vring pointers (KVA) */
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev /* virtqueue allocation info */
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev /* free entry management */
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev/* public interface */
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevuint32_t virtio_negotiate_features(struct virtio_softc *, uint32_t);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevsize_t virtio_show_features(uint32_t features, char *buffer, size_t len);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevboolean_t virtio_has_feature(struct virtio_softc *sc, uint32_t feature);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid virtio_set_status(struct virtio_softc *sc, unsigned int);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev#define virtio_device_reset(sc) virtio_set_status((sc), 0)
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevuint8_t virtio_read_device_config_1(struct virtio_softc *sc,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev unsigned int index);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevuint16_t virtio_read_device_config_2(struct virtio_softc *sc,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev unsigned int index);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevuint32_t virtio_read_device_config_4(struct virtio_softc *sc,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev unsigned int index);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevuint64_t virtio_read_device_config_8(struct virtio_softc *sc,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev unsigned int index);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid virtio_write_device_config_1(struct virtio_softc *sc,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid virtio_write_device_config_2(struct virtio_softc *sc,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid virtio_write_device_config_4(struct virtio_softc *sc,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid virtio_write_device_config_8(struct virtio_softc *sc,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevstruct virtqueue *virtio_alloc_vq(struct virtio_softc *sc,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev unsigned int indirect_num, const char *name);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevstruct vq_entry *vq_alloc_entry(struct virtqueue *vq);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid vq_free_entry(struct virtqueue *vq, struct vq_entry *qe);
8a324c92216752a3ac2de7c31f554588932de707Dan McDonaldunsigned int virtio_ve_indirect_available(struct vq_entry *qe);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid virtio_start_vq_intr(struct virtqueue *);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid virtio_ve_add_cookie(struct vq_entry *qe, ddi_dma_handle_t dma_handle,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev ddi_dma_cookie_t dma_cookie, unsigned int ncookies, boolean_t write);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid virtio_ve_add_indirect_buf(struct vq_entry *qe, uint64_t paddr,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid virtio_ve_set(struct vq_entry *qe, uint64_t paddr, uint32_t len,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid virtio_push_chain(struct vq_entry *qe, boolean_t sync);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevstruct vq_entry *virtio_pull_chain(struct virtqueue *vq, uint32_t *len);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevint virtio_register_ints(struct virtio_softc *sc,
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevvoid virtio_release_ints(struct virtio_softc *sc);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsevint virtio_enable_ints(struct virtio_softc *sc);
e0724c534a46ca4754330bc022bf1e2a68f5bb93Alexey Zaytsev#endif /* __VIRTIOVAR_H__ */