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46e0cf7629
Add functions to read and write virtio header fields. Add status bit setting in virtio-blk-device. Signed-off-by: Marc Marí <marc.mari.barcelo@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/*
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* libqos virtio definitions
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*
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* Copyright (c) 2014 Marc Marí
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef LIBQOS_VIRTIO_H
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#define LIBQOS_VIRTIO_H
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#define QVIRTIO_VENDOR_ID 0x1AF4
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#define QVIRTIO_RESET 0x0
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#define QVIRTIO_ACKNOWLEDGE 0x1
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#define QVIRTIO_DRIVER 0x2
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#define QVIRTIO_NET_DEVICE_ID 0x1
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#define QVIRTIO_BLK_DEVICE_ID 0x2
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typedef struct QVirtioDevice {
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/* Device type */
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uint16_t device_type;
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} QVirtioDevice;
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typedef struct QVirtioBus {
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uint8_t (*config_readb)(QVirtioDevice *d, void *addr);
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uint16_t (*config_readw)(QVirtioDevice *d, void *addr);
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uint32_t (*config_readl)(QVirtioDevice *d, void *addr);
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uint64_t (*config_readq)(QVirtioDevice *d, void *addr);
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/* Get status of the device */
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uint8_t (*get_status)(QVirtioDevice *d);
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/* Set status of the device */
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void (*set_status)(QVirtioDevice *d, uint8_t status);
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} QVirtioBus;
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uint8_t qvirtio_config_readb(const QVirtioBus *bus, QVirtioDevice *d,
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void *addr);
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uint16_t qvirtio_config_readw(const QVirtioBus *bus, QVirtioDevice *d,
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void *addr);
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uint32_t qvirtio_config_readl(const QVirtioBus *bus, QVirtioDevice *d,
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void *addr);
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uint64_t qvirtio_config_readq(const QVirtioBus *bus, QVirtioDevice *d,
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void *addr);
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void qvirtio_reset(const QVirtioBus *bus, QVirtioDevice *d);
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void qvirtio_set_acknowledge(const QVirtioBus *bus, QVirtioDevice *d);
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void qvirtio_set_driver(const QVirtioBus *bus, QVirtioDevice *d);
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#endif
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