Commit 45f25a79 authored by Haren Myneni's avatar Haren Myneni Committed by Michael Ellerman
Browse files

powerpc/vas: Define VAS_TX_WIN_OPEN ioctl API 



Define the VAS_TX_WIN_OPEN ioctl interface for NX GZIP access
from user space. This interface is used to open GZIP send window and
mmap region which can be used by userspace to send requests to NX
directly with copy/paste instructions.

Signed-off-by: default avatarHaren Myneni <haren@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1587114065.2275.1106.camel@hbabu-laptop
parent a8c0c69b

Documentation/userspace-api/ioctl/ioctl-number.rst

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@@ -286,6 +286,7 @@ Code Seq# Include File Comments 
'v'   00-1F  linux/fs.h                                              conflict!

'v'   00-0F  linux/sonypi.h                                          conflict!

'v'   00-0F  media/v4l2-subdev.h                                     conflict!

'v'   20-27  arch/powerpc/include/uapi/asm/vas-api.h		     VAS API

'v'   C0-FF  linux/meye.h                                            conflict!

'w'   all                                                            CERN SCI driver

'y'   00-1F                                                          packet based user level communications

arch/powerpc/include/uapi/asm/vas-api.h

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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */

/*

 * Copyright 2019 IBM Corp.

 */



#ifndef _UAPI_MISC_VAS_H

#define _UAPI_MISC_VAS_H



#include <asm/ioctl.h>



#define VAS_MAGIC	'v'

#define VAS_TX_WIN_OPEN	_IOW(VAS_MAGIC, 0x20, struct vas_tx_win_open_attr)



struct vas_tx_win_open_attr {

	__u32	version;

	__s16	vas_id;	/* specific instance of vas or -1 for default */

	__u16	reserved1;

	__u64	flags;	/* Future use */

	__u64	reserved2[6];

};



#endif /* _UAPI_MISC_VAS_H */