linux-kernel - [PATCH 14/16] fpga: intel: afu add FPGA_GET_API_VERSION/CHECK

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Message-Id: <1490875696-15145-15-git-send-email-hao.wu@intel.com>
Date:   Thu, 30 Mar 2017 20:08:14 +0800
From:   Wu Hao <hao.wu@...el.com>
To:     atull@...nel.org, moritz.fischer@...us.com,
        linux-fpga@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     luwei.kang@...el.com, yi.z.zhang@...el.com, hao.wu@...el.com,
        Tim Whisonant <tim.whisonant@...el.com>,
        Enno Luebbers <enno.luebbers@...el.com>,
        Shiva Rao <shiva.rao@...el.com>,
        Christopher Rauer <christopher.rauer@...el.com>,
        Xiao Guangrong <guangrong.xiao@...ux.intel.com>
Subject: [PATCH 14/16] fpga: intel: afu add FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support

FPGA_GET_API_VERSION and FPGA_CHECK_EXTENSION ioctls are common ones which
need to be supported by all feature devices drivers including FME and AFU.
This patch implements above 2 ioctls in Intel FPGA Accelerated Function
Unit (AFU) driver.

Signed-off-by: Tim Whisonant <tim.whisonant@...el.com>
Signed-off-by: Enno Luebbers <enno.luebbers@...el.com>
Signed-off-by: Shiva Rao <shiva.rao@...el.com>
Signed-off-by: Christopher Rauer <christopher.rauer@...el.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@...ux.intel.com>
Signed-off-by: Wu Hao <hao.wu@...el.com>
---
 drivers/fpga/intel/afu-main.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/fpga/intel/afu-main.c b/drivers/fpga/intel/afu-main.c
index 7166d5c..89d4b2f 100644
--- a/drivers/fpga/intel/afu-main.c
+++ b/drivers/fpga/intel/afu-main.c
@@ -124,6 +124,13 @@ static int afu_release(struct inode *inode, struct file *filp)
 	return 0;
 }
 
+static long afu_ioctl_check_extension(struct feature_platform_data *pdata,
+				     unsigned long arg)
+{
+	/* No extension support for now */
+	return 0;
+}
+
 static long afu_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	struct platform_device *pdev = filp->private_data;
@@ -134,6 +141,10 @@ static long afu_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	dev_dbg(&pdev->dev, "%s cmd 0x%x\n", __func__, cmd);
 
 	switch (cmd) {
+	case FPGA_GET_API_VERSION:
+		return FPGA_API_VERSION;
+	case FPGA_CHECK_EXTENSION:
+		return afu_ioctl_check_extension(pdata, arg);
 	default:
 		/*
 		 * Let sub-feature's ioctl function to handle the cmd
-- 
2.7.4