linux-kernel - [PATCH v1 2/5] fpga: dfl: Move the DFH definitions

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Date:   Tue,  6 Sep 2022 12:04:23 -0700
From:   matthew.gerlach@...ux.intel.com
To:     hao.wu@...el.com, yilun.xu@...el.com, russell.h.weight@...el.com,
        basheer.ahmed.muddebihal@...el.com, trix@...hat.com,
        mdf@...nel.org, linux-fpga@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        tianfei.zhang@...el.com, corbet@....net,
        gregkh@...uxfoundation.org, linux-serial@...r.kernel.org,
        jirislaby@...nel.org, geert+renesas@...der.be,
        andriy.shevchenko@...ux.intel.com,
        niklas.soderlund+renesas@...natech.se, phil.edworthy@...esas.com,
        macro@...am.me.uk, johan@...nel.org, lukas@...ner.de
Cc:     Basheer Ahmed Muddebihal 
        <basheer.ahmed.muddebihal@...ux.intel.com>,
        Matthew Gerlach <matthew.gerlach@...ux.intel.com>
Subject: [PATCH v1 2/5] fpga: dfl: Move the DFH definitions

From: Basheer Ahmed Muddebihal <basheer.ahmed.muddebihal@...ux.intel.com>

Moving the DFH register offset and register definitions from
drivers/fpga/dfl.h to include/linux/dfl.h.  These definitions
need to be accessed by dfl drivers that are outside of
drivers/fpga.

Signed-off-by: Basheer Ahmed Muddebihal <basheer.ahmed.muddebihal@...ux.intel.com>
Signed-off-by: Matthew Gerlach <matthew.gerlach@...ux.intel.com>
---
 drivers/fpga/dfl.h  | 22 ++--------------------
 include/linux/dfl.h | 23 ++++++++++++++++++++++-
 2 files changed, 24 insertions(+), 21 deletions(-)

diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h
index 06cfcd5e84bb..d4dfc03a0b61 100644
--- a/drivers/fpga/dfl.h
+++ b/drivers/fpga/dfl.h
@@ -2,7 +2,7 @@
 /*
  * Driver Header File for FPGA Device Feature List (DFL) Support
  *
- * Copyright (C) 2017-2018 Intel Corporation, Inc.
+ * Copyright (C) 2017-2022 Intel Corporation, Inc.
  *
  * Authors:
  *   Kang Luwei <luwei.kang@...el.com>
@@ -17,6 +17,7 @@
 #include <linux/bitfield.h>
 #include <linux/cdev.h>
 #include <linux/delay.h>
+#include <linux/dfl.h>
 #include <linux/eventfd.h>
 #include <linux/fs.h>
 #include <linux/interrupt.h>
@@ -53,28 +54,9 @@
 #define PORT_FEATURE_ID_UINT		0x12
 #define PORT_FEATURE_ID_STP		0x13
 
-/*
- * Device Feature Header Register Set
- *
- * For FIUs, they all have DFH + GUID + NEXT_AFU as common header registers.
- * For AFUs, they have DFH + GUID as common header registers.
- * For private features, they only have DFH register as common header.
- */
-#define DFH			0x0
-#define GUID_L			0x8
-#define GUID_H			0x10
-#define NEXT_AFU		0x18
-
-#define DFH_SIZE		0x8
-
 /* Device Feature Header Register Bitfield */
-#define DFH_ID			GENMASK_ULL(11, 0)	/* Feature ID */
 #define DFH_ID_FIU_FME		0
 #define DFH_ID_FIU_PORT		1
-#define DFH_REVISION		GENMASK_ULL(15, 12)	/* Feature revision */
-#define DFH_NEXT_HDR_OFST	GENMASK_ULL(39, 16)	/* Offset to next DFH */
-#define DFH_EOL			BIT_ULL(40)		/* End of list */
-#define DFH_TYPE		GENMASK_ULL(63, 60)	/* Feature type */
 #define DFH_TYPE_AFU		1
 #define DFH_TYPE_PRIVATE	3
 #define DFH_TYPE_FIU		4
diff --git a/include/linux/dfl.h b/include/linux/dfl.h
index 431636a0dc78..b5accdcfa368 100644
--- a/include/linux/dfl.h
+++ b/include/linux/dfl.h
@@ -2,7 +2,7 @@
 /*
  * Header file for DFL driver and device API
  *
- * Copyright (C) 2020 Intel Corporation, Inc.
+ * Copyright (C) 2020-2022 Intel Corporation, Inc.
  */
 
 #ifndef __LINUX_DFL_H
@@ -11,6 +11,27 @@
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 
+/*
+ * Device Feature Header Register Set
+ *
+ * For FIUs, they all have DFH + GUID + NEXT_AFU as common header registers.
+ * For AFUs, they have DFH + GUID as common header registers.
+ * For private features, they only have DFH register as common header.
+ */
+#define DFH			0x0
+#define GUID_L			0x8
+#define GUID_H			0x10
+#define NEXT_AFU		0x18
+
+#define DFH_SIZE		0x8
+
+/* Device Feature Header Register Bitfield */
+#define DFH_ID			GENMASK_ULL(11, 0)	/* Feature ID */
+#define DFH_REVISION		GENMASK_ULL(15, 12)	/* Feature revision */
+#define DFH_NEXT_HDR_OFST	GENMASK_ULL(39, 16)	/* Offset to next DFH */
+#define DFH_EOL			BIT_ULL(40)		/* End of list */
+#define DFH_TYPE		GENMASK_ULL(63, 60)	/* Feature type */
+
 /**
  * enum dfl_id_type - define the DFL FIU types
  */
-- 
2.25.1