/*
 * 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
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<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-24 12:21:51 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-24 12:21:51 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/xen?id=19ca2c8fecb1592d623fe5e82d6796f8d446268d'>19ca2c8fecb1592d623fe5e82d6796f8d446268d</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/xen?id=19ca2c8fecb1592d623fe5e82d6796f8d446268d'>patch</a>)</td></tr>
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<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/xen?id=a4685d2f58e2230d4e27fb2ee581d7ea35e5d046'>a4685d2f58e2230d4e27fb2ee581d7ea35e5d046</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/xen?id=19ca2c8fecb1592d623fe5e82d6796f8d446268d&amp;id2=a4685d2f58e2230d4e27fb2ee581d7ea35e5d046'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/xen?id=880a38547ff08715ce4f1daf9a4bb30c87676e68'>880a38547ff08715ce4f1daf9a4bb30c87676e68</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/xen?id=19ca2c8fecb1592d623fe5e82d6796f8d446268d&amp;id2=880a38547ff08715ce4f1daf9a4bb30c87676e68'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace</div><div class='commit-msg'>Pull namespace fix from Eric Biederman:
 "This has a single brown bag fix.

  The possible deadlock with dec_pid_namespaces that I had thought was
  fixed earlier turned out only to have been moved. So instead of being
  cleaver this change takes ucounts_lock with irqs disabled. So
  dec_ucount can be used from any context without fear of deadlock.

  The items accounted for dec_ucount and inc_ucount are all
  comparatively heavy weight objects so I don't exepct this will have
  any measurable performance impact"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  userns: Make ucounts lock irq-safe
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=19ca2c8fecb1592d623fe5e82d6796f8d446268d'>Diffstat</a> (limited to 'include/xen')</div><table summary='diffstat' class='diffstat'>