/******************************************************************************
 * gntalloc.h
 *
 * Interface to /dev/xen/gntalloc.
 *
 * Author: Daniel De Graaf <dgdegra@tycho.nsa.gov>
 *
 * This file is in the public domain.
 */

#ifndef __LINUX_PUBLIC_GNTALLOC_H__
#define __LINUX_PUBLIC_GNTALLOC_H__

#include <linux/types.h>

/*
 * Allocates a new page and creates a new grant reference.
 */
#define IOCTL_GNTALLOC_ALLOC_GREF \
_IOC(_IOC_NONE, 'G', 5, sizeof(struct ioctl_gntalloc_alloc_gref))
struct ioctl_gntalloc_alloc_gref {
	/* IN parameters */
	/* The ID of the domain to be given access to the grants. */
	__u16 domid;
	/* Flags for this mapping */
	__u16 flags;
	/* Number of pages to map */
	__u32 count;
	/* OUT parameters */
	/* The offset to be used on a subsequent call to mmap(). */
	__u64 index;
	/* The grant references of the newly created grant, one per page */
	/* Variable size, depending on count */
	__u32 gref_ids[1];
};

#define GNTALLOC_FLAG_WRITABLE 1

/*
 * Deallocates the grant reference, allowing the associated page to be freed if
 * no other domains are using it.
 */
#define IOCTL_GNTALLOC_DEALLOC_GREF \
_IOC(_IOC_NONE, 'G', 6, sizeof(struct ioctl_gntalloc_dealloc_gref))
struct ioctl_gntalloc_dealloc_gref {
	/* IN parameters */
	/* The offset returned in the map operation */
	__u64 index;
	/* Number of references to unmap */
	__u32 count;
};

/*
 * Sets up an unmap notification within the page, so that the other side can do
 * cleanup if this side crashes. Required to implement cross-domain robust
 * mutexes or close notification on communication channels.
 *
 * Each mapped page only supports one notification; multiple calls referring to
 * the same page overwrite the previous notification. You must clear the
 * notification prior to the IOCTL_GNTALLOC_DEALLOC_GREF if you do not want it
 * to occur.
 */
#define IOCTL_GNTALLOC_SET_UNMAP_NOTIFY \
_IOC(_IOC_NONE, 'G', 7, sizeof(struct ioctl_gntalloc_unmap_notify))
struct ioctl_gntalloc_unmap_notify {
	/* IN parameters */
	/* Offset in the file descriptor for a byte within the page (same as
	 * used in mmap). If using UNMAP_NOTIFY_CLEAR_BYTE, this is the byte to
	 * be cleared. Otherwise, it can be any byte in the page whose
	 * notification we are adjusting.
	 */
	__u64 index;
	/* Action(s) to take on unmap */
	__u32 action;
	/* Event channel to notify */
	__u32 event_channel_port;
};

/* Clear (set to zero) the byte specified by index */
#define UNMAP_NOTIFY_CLEAR_BYTE 0x1
/* Send an interrupt on the indicated event channel */
#define UNMAP_NOTIFY_SEND_EVENT 0x2

#endif /* __LINUX_PUBLIC_GNTALLOC_H__ */
'/cgit.cgi/linux/net-next.git/commit/?id=3eefa7e8cc8516d737a6a961914e20501eb2a952'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=3eefa7e8cc8516d737a6a961914e20501eb2a952'>Documentation</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='3eefa7e8cc8516d737a6a961914e20501eb2a952'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Fabio Estevam &lt;fabio.estevam@nxp.com&gt;</td><td class='right'>2016-06-02 21:30:48 -0300</td></tr>
<tr><th>committer</th><td>Rob Herring &lt;robh@kernel.org&gt;</td><td class='right'>2016-06-08 08:13:31 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=3eefa7e8cc8516d737a6a961914e20501eb2a952'>3eefa7e8cc8516d737a6a961914e20501eb2a952</a> (<a href='/cgit.cgi/linux/net-next.git/patch/Documentation?id=3eefa7e8cc8516d737a6a961914e20501eb2a952'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3eefa7e8cc8516d737a6a961914e20501eb2a952'>c1485fc30620742fb858637341191463810b428e</a> /<a href='/cgit.cgi/linux/net-next.git/tree/Documentation?id=3eefa7e8cc8516d737a6a961914e20501eb2a952'>Documentation</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=f83803305b008ca3d75b00092b6493bc19eda60b'>f83803305b008ca3d75b00092b6493bc19eda60b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation?id=3eefa7e8cc8516d737a6a961914e20501eb2a952&amp;id2=f83803305b008ca3d75b00092b6493bc19eda60b'>diff</a>)</td></tr></table>
<div class='commit-subject'>dt-bindings: Add vendor prefix for TechNexion</div><div class='commit-msg'>TechNexion designs and manufactures embedded computing systems:
http://www.technexion.com/

Signed-off-by: Fabio Estevam &lt;fabio.estevam@nxp.com&gt;
Signed-off-by: Rob Herring &lt;robh@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=3eefa7e8cc8516d737a6a961914e20501eb2a952'>Diffstat</a> (limited to 'Documentation')</div><table summary='diffstat' class='diffstat'>