virtio_pcireg.h revision 1.1
1/* 2 * Copyright (c) 2019 Stefan Fritsch <sf@openbsd.org> 3 * 4 * Permission to use, copy, modify, and distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17#ifndef _DEV_PCI_VIRTIO_PCIREG_H_ 18#define _DEV_PCI_VIRTIO_PCIREG_H_ 19 20/* Virtio 0.9 config space */ 21#define VIRTIO_CONFIG_DEVICE_FEATURES 0 /* 32bit */ 22#define VIRTIO_CONFIG_GUEST_FEATURES 4 /* 32bit */ 23#define VIRTIO_CONFIG_QUEUE_ADDRESS 8 /* 32bit */ 24#define VIRTIO_CONFIG_QUEUE_SIZE 12 /* 16bit */ 25#define VIRTIO_CONFIG_QUEUE_SELECT 14 /* 16bit */ 26#define VIRTIO_CONFIG_QUEUE_NOTIFY 16 /* 16bit */ 27#define VIRTIO_CONFIG_DEVICE_STATUS 18 /* 8bit */ 28#define VIRTIO_CONFIG_ISR_STATUS 19 /* 8bit */ 29#define VIRTIO_CONFIG_ISR_CONFIG_CHANGE 2 30#define VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI 20 31/* Only if MSIX is enabled: */ 32#define VIRTIO_MSI_CONFIG_VECTOR 20 /* 16bit, optional */ 33#define VIRTIO_MSI_QUEUE_VECTOR 22 /* 16bit, optional */ 34#define VIRTIO_CONFIG_DEVICE_CONFIG_MSI 24 35 36#define VIRTIO_MSI_NO_VECTOR 0xffff 37 38 39#endif /* _DEV_PCI_VIRTIO_PCIREG_H_ */ 40