Thread (53 messages) 53 messages, 4 authors, 2018-06-15
STALE2936d REVIEWED: 2 (1M)
Revisions (3)
  1. v5 [diff vs current]
  2. v6 current
  3. v7 [diff vs current]

[PATCH v6 26/29] fpga: dfl: afu: add DFL_FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support

From: Wu Hao <hidden>
Date: 2018-06-12 10:24:50
Also in: linux-fpga, lkml
Subsystem: fpga dfl drivers, fpga manager framework, the rest · Maintainers: Xu Yilun, Moritz Fischer, Linus Torvalds

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. This patch implements above 2 ioctls in FPGA Accelerated
Function Unit (AFU) driver.

Signed-off-by: Tim Whisonant <redacted>
Signed-off-by: Enno Luebbers <redacted>
Signed-off-by: Shiva Rao <redacted>
Signed-off-by: Christopher Rauer <redacted>
Signed-off-by: Xiao Guangrong <redacted>
Signed-off-by: Wu Hao <redacted>
Acked-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
---
v2: rebased
v3: rebased as driver renamed to fpga-dfl-afu
    fix one checkpatch issue
v4: add Acked-by from Alan and Moritz.
v5: rebase, and add DFL_ prefix to APIs.
v6: rebase.
---
 drivers/fpga/dfl-afu-main.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c
index 30a6937..1f22423 100644
--- a/drivers/fpga/dfl-afu-main.c
+++ b/drivers/fpga/dfl-afu-main.c
@@ -236,6 +236,13 @@ static int afu_release(struct inode *inode, struct file *filp)
 	return 0;
 }
 
+static long afu_ioctl_check_extension(struct dfl_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;
@@ -248,6 +255,10 @@ static long afu_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	pdata = dev_get_platdata(&pdev->dev);
 
 	switch (cmd) {
+	case DFL_FPGA_GET_API_VERSION:
+		return DFL_FPGA_API_VERSION;
+	case DFL_FPGA_CHECK_EXTENSION:
+		return afu_ioctl_check_extension(pdata, arg);
 	default:
 		/*
 		 * Let sub-feature's ioctl function to handle the cmd
-- 
1.8.3.1
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