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