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fpga: dfl: fme: add DFL_FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support

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DFL_FPGA_GET_API_VERSION and DFL_FPGA_CHECK_EXTENSION ioctls are common
ones which need to be supported by all feature devices drivers including
FME and AFU. Userspace application can use these ioctl interfaces to get
the API info and check if specific extension is supported or not in
current driver.

This patch implements above 2 ioctls in FPGA Management Engine (FME)
driver.

Signed-off-by: Tim Whisonant <tim.whisonant@intel.com>
Signed-off-by: Enno Luebbers <enno.luebbers@intel.com>
Signed-off-by: Shiva Rao <shiva.rao@intel.com>
Signed-off-by: Christopher Rauer <christopher.rauer@intel.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Wu Hao <hao.wu@intel.com>
Acked-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wu Hao 2018-06-30 08:53:23 +08:00 • committed by Greg Kroah-Hartman
parent 0a27ff24d5
commit 620e1902f6
3 changed files with 63 additions and 0 deletions
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50
include/uapi/linux/fpga-dfl.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* Header File for FPGA DFL User API
*
* Copyright (C) 2017-2018 Intel Corporation, Inc.
*
* Authors:
* Kang Luwei <luwei.kang@intel.com>
* Zhang Yi <yi.z.zhang@intel.com>
* Wu Hao <hao.wu@intel.com>
* Xiao Guangrong <guangrong.xiao@linux.intel.com>
*/
#ifndef _UAPI_LINUX_FPGA_DFL_H
#define _UAPI_LINUX_FPGA_DFL_H
#include <linux/ioctl.h>
#define DFL_FPGA_API_VERSION 0
/*
* The IOCTL interface for DFL based FPGA is designed for extensibility by
* embedding the structure length (argsz) and flags into structures passed
* between kernel and userspace. This design referenced the VFIO IOCTL
* interface (include/uapi/linux/vfio.h).
*/
#define DFL_FPGA_MAGIC 0xB6
#define DFL_FPGA_BASE 0
/**
* DFL_FPGA_GET_API_VERSION - _IO(DFL_FPGA_MAGIC, DFL_FPGA_BASE + 0)
*
* Report the version of the driver API.
* Return: Driver API Version.
*/
#define DFL_FPGA_GET_API_VERSION _IO(DFL_FPGA_MAGIC, DFL_FPGA_BASE + 0)
/**
* DFL_FPGA_CHECK_EXTENSION - _IO(DFL_FPGA_MAGIC, DFL_FPGA_BASE + 1)
*
* Check whether an extension is supported.
* Return: 0 if not supported, otherwise the extension is supported.
*/
#define DFL_FPGA_CHECK_EXTENSION _IO(DFL_FPGA_MAGIC, DFL_FPGA_BASE + 1)
#endif /* _UAPI_LINUX_FPGA_DFL_H */