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From: Haren Myneni <haren@linux.ibm.com>
To: mpe@ellerman.id.au
Cc: herbert@gondor.apana.org.au, mikey@neuling.org,
	npiggin@gmail.com, linux-crypto@vger.kernel.org,
	sukadev@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org,
	dja@axtens.net
Subject: [PATCH v6 2/9] powerpc/vas: Define VAS_TX_WIN_OPEN ioctl API
Date: Fri, 17 Apr 2020 02:01:05 -0700	[thread overview]
Message-ID: <1587114065.2275.1106.camel@hbabu-laptop> (raw)
In-Reply-To: <1587113732.2275.1096.camel@hbabu-laptop>


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: Haren Myneni <haren@linux.ibm.com>
---
 Documentation/userspace-api/ioctl/ioctl-number.rst |  1 +
 arch/powerpc/include/uapi/asm/vas-api.h            | 22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 arch/powerpc/include/uapi/asm/vas-api.h

diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
index f759eda..f18accb 100644
--- a/Documentation/userspace-api/ioctl/ioctl-number.rst
+++ b/Documentation/userspace-api/ioctl/ioctl-number.rst
@@ -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
diff --git a/arch/powerpc/include/uapi/asm/vas-api.h b/arch/powerpc/include/uapi/asm/vas-api.h
new file mode 100644
index 0000000..fe95d67
--- /dev/null
+++ b/arch/powerpc/include/uapi/asm/vas-api.h
@@ -0,0 +1,22 @@
+/* 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 */
-- 
1.8.3.1




  parent reply	other threads:[~2020-04-17  9:01 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-17  8:55 [PATCH v6 0/9] crypto/nx: Enable GZIP engine and provide userpace API Haren Myneni
2020-04-17  9:00 ` [PATCH v6 1/9] powerpc/vas: Initialize window attributes for GZIP coprocessor type Haren Myneni
2020-04-21 14:09   ` Michael Ellerman
2020-04-17  9:01 ` Haren Myneni [this message]
2020-04-17  9:02 ` [PATCH v6 3/9] powerpc/vas: Add VAS user space API Haren Myneni
2020-04-17  9:02 ` [PATCH v6 4/9] crypto/nx: Initialize coproc entry with kzalloc Haren Myneni
2020-04-17  9:03 ` [PATCH v6 5/9] crypto/nx: Rename nx-842-powernv file name to nx-common-powernv Haren Myneni
2020-04-17  9:09 ` [PATCH v6 6/9] crypto/nx: Make enable code generic to add new GZIP compression type Haren Myneni
2020-04-17  9:10 ` [PATCH v6 7/9] crypto/nx: Enable and setup " Haren Myneni
2020-04-17  9:11 ` [PATCH v6 8/9] crypto/nx: Remove 'pid' in vas_tx_win_attr struct Haren Myneni
2020-04-17  9:11 ` [PATCH v6 9/9] Documentation/powerpc: VAS API Haren Myneni

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