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74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
4 years ago
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* Intel MIC Platform Software Stack (MPSS)
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*
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* Copyright(c) 2013 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Intel MIC Host driver.
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*
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*/
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#ifndef _MIC_IOCTL_H_
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#define _MIC_IOCTL_H_
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#include <linux/types.h>
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/*
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* mic_copy - MIC virtio descriptor copy.
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*
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* @iov: An array of IOVEC structures containing user space buffers.
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* @iovcnt: Number of IOVEC structures in iov.
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* @vr_idx: The vring index.
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* @update_used: A non zero value results in used index being updated.
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* @out_len: The aggregate of the total length written to or read from
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* the virtio device.
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*/
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struct mic_copy_desc {
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struct iovec *iov;
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__u32 iovcnt;
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__u8 vr_idx;
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__u8 update_used;
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__u32 out_len;
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};
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/*
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* Add a new virtio device
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* The (struct mic_device_desc *) pointer points to a device page entry
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* for the virtio device consisting of:
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* - struct mic_device_desc
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* - struct mic_vqconfig (num_vq of these)
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* - host and guest features
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* - virtio device config space
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* The total size referenced by the pointer should equal the size returned
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* by desc_size() in mic_common.h
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*/
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#define MIC_VIRTIO_ADD_DEVICE _IOWR('s', 1, struct mic_device_desc *)
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/*
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* Copy the number of entries in the iovec and update the used index
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* if requested by the user.
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*/
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#define MIC_VIRTIO_COPY_DESC _IOWR('s', 2, struct mic_copy_desc *)
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/*
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* Notify virtio device of a config change
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* The (__u8 *) pointer points to config space values for the device
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* as they should be written into the device page. The total size
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* referenced by the pointer should equal the config_len field of struct
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* mic_device_desc.
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*/
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#define MIC_VIRTIO_CONFIG_CHANGE _IOWR('s', 5, __u8 *)
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#endif
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