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From: Wu Hao <hao.wu@intel.com>
To: atull@kernel.org, mdf@kernel.org, linux-fpga@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: linux-api@vger.kernel.org, Wu Hao <hao.wu@intel.com>,
	Xu Yilun <yilun.xu@intel.com>
Subject: [PATCH 10/17] fpga: dfl: afu: export __port_enable/disable function.
Date: Mon, 25 Mar 2019 11:07:37 +0800	[thread overview]
Message-ID: <1553483264-5379-11-git-send-email-hao.wu@intel.com> (raw)
In-Reply-To: <1553483264-5379-1-git-send-email-hao.wu@intel.com>

As these two functions are used by other private features. e.g.
in error reporting private feature, it requires to check port status
and reset port for error clearing.

Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Wu Hao <hao.wu@intel.com>
---
 drivers/fpga/dfl-afu-main.c | 25 ++++++++++++++-----------
 drivers/fpga/dfl-afu.h      |  3 +++
 2 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c
index 2916876..e727d9b 100644
--- a/drivers/fpga/dfl-afu-main.c
+++ b/drivers/fpga/dfl-afu-main.c
@@ -24,14 +24,16 @@
 #define DRV_VERSION	"0.8"
 
 /**
- * port_enable - enable a port
+ * __port_enable - enable a port
  * @pdev: port platform device.
  *
  * Enable Port by clear the port soft reset bit, which is set by default.
  * The AFU is unable to respond to any MMIO access while in reset.
- * port_enable function should only be used after port_disable function.
+ * __port_enable function should only be used after __port_disable function.
+ *
+ * The caller needs to hold lock for protection.
  */
-static void port_enable(struct platform_device *pdev)
+void __port_enable(struct platform_device *pdev)
 {
 	struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	void __iomem *base;
@@ -54,13 +56,14 @@ static void port_enable(struct platform_device *pdev)
 #define RST_POLL_TIMEOUT 1000 /* us */
 
 /**
- * port_disable - disable a port
+ * __port_disable - disable a port
  * @pdev: port platform device.
  *
- * Disable Port by setting the port soft reset bit, it puts the port into
- * reset.
+ * Disable Port by setting the port soft reset bit, it puts the port into reset.
+ *
+ * The caller needs to hold lock for protection.
  */
-static int port_disable(struct platform_device *pdev)
+int __port_disable(struct platform_device *pdev)
 {
 	struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	void __iomem *base;
@@ -106,9 +109,9 @@ static int __port_reset(struct platform_device *pdev)
 {
 	int ret;
 
-	ret = port_disable(pdev);
+	ret = __port_disable(pdev);
 	if (!ret)
-		port_enable(pdev);
+		__port_enable(pdev);
 
 	return ret;
 }
@@ -810,9 +813,9 @@ static int port_enable_set(struct platform_device *pdev, bool enable)
 
 	mutex_lock(&pdata->lock);
 	if (enable)
-		port_enable(pdev);
+		__port_enable(pdev);
 	else
-		ret = port_disable(pdev);
+		ret = __port_disable(pdev);
 	mutex_unlock(&pdata->lock);
 
 	return ret;
diff --git a/drivers/fpga/dfl-afu.h b/drivers/fpga/dfl-afu.h
index 0c7630a..35e60c5 100644
--- a/drivers/fpga/dfl-afu.h
+++ b/drivers/fpga/dfl-afu.h
@@ -79,6 +79,9 @@ struct dfl_afu {
 	struct dfl_feature_platform_data *pdata;
 };
 
+void __port_enable(struct platform_device *pdev);
+int __port_disable(struct platform_device *pdev);
+
 void afu_mmio_region_init(struct dfl_feature_platform_data *pdata);
 int afu_mmio_region_add(struct dfl_feature_platform_data *pdata,
 			u32 region_index, u64 region_size, u64 phys, u32 flags);
-- 
2.7.4


  parent reply	other threads:[~2019-03-25  3:24 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-25  3:07 [PATCH 00/17] add new features for FPGA DFL drivers Wu Hao
2019-03-25  3:07 ` [PATCH 01/17] fpga: dfl-fme-mgr: fix FME_PR_INTFC_ID register address Wu Hao
2019-03-25 17:28   ` Alan Tull
2019-04-01 19:54   ` Moritz Fischer
2019-04-02  4:38     ` Wu Hao
2019-04-02 13:33       ` Moritz Fischer
2019-03-25  3:07 ` [PATCH 02/17] fpga: dfl: fme: align PR buffer size per PR datawidth Wu Hao
2019-03-25 17:50   ` Alan Tull
2019-03-26  0:28     ` Wu Hao
2019-03-28 18:50       ` Alan Tull
2019-03-25  3:07 ` [PATCH 03/17] fpga: dfl: fme: support 512bit data width PR Wu Hao
2019-03-25 18:48   ` Alan Tull
2019-03-25 22:53   ` Scott Wood
2019-03-25 22:58     ` Scott Wood
2019-03-26 19:33       ` Alan Tull
2019-03-26 21:22         ` Scott Wood
2019-03-27  4:37           ` Wu Hao
2019-03-27  6:10             ` Scott Wood
2019-03-27  6:10               ` Scott Wood
2019-03-27  6:03               ` Wu Hao
2019-03-27  5:10       ` Wu Hao
2019-03-27  6:19         ` Scott Wood
2019-03-27  7:10           ` Wu Hao
2019-03-27  5:46     ` Wu Hao
2019-03-25  3:07 ` [PATCH 04/17] Documentation: fpga: dfl: add descriptions for virtualization and new interfaces Wu Hao
2019-03-25  3:07 ` [PATCH 05/17] fpga: dfl: fme: add DFL_FPGA_FME_PORT_RELEASE/ASSIGN ioctl support Wu Hao
2019-03-28 22:03   ` Alan Tull
2019-03-25  3:07 ` [PATCH 06/17] fpga: dfl: pci: enable SRIOV support Wu Hao
2019-03-28 22:03   ` Alan Tull
2019-03-25  3:07 ` [PATCH 07/17] fpga: dfl: afu: add AFU state related sysfs interfaces Wu Hao
2019-03-28 17:13   ` Alan Tull
2019-03-25  3:07 ` [PATCH 08/17] fpga: dfl: afu: add userclock " Wu Hao
2019-04-01 21:41   ` Alan Tull
2019-03-25  3:07 ` [PATCH 09/17] fpga: dfl: add id_table for dfl private feature driver Wu Hao
2019-04-02 15:09   ` Moritz Fischer
2019-04-11 20:55     ` Alan Tull
2019-03-25  3:07 ` Wu Hao [this message]
2019-04-02 15:42   ` [PATCH 10/17] fpga: dfl: afu: export __port_enable/disable function Moritz Fischer
2019-04-02 15:50   ` Moritz Fischer
2019-04-11 20:45     ` Alan Tull
2019-03-25  3:07 ` [PATCH 11/17] fpga: dfl: afu: add error reporting support Wu Hao
2019-04-09 20:57   ` Alan Tull
2019-04-10  1:43     ` Wu Hao
2019-03-25  3:07 ` [PATCH 12/17] fpga: dfl: afu: add STP (SignalTap) support Wu Hao
2019-04-02 15:07   ` Moritz Fischer
2019-04-11 20:41     ` Alan Tull
2019-03-25  3:07 ` [PATCH 13/17] fpga: dfl: fme: add capability sysfs interfaces Wu Hao
2019-04-09 21:05   ` Alan Tull
2019-03-25  3:07 ` [PATCH 14/17] fpga: dfl: fme: add thermal management support Wu Hao
2019-04-02 14:59   ` Moritz Fischer
2019-04-03 16:31     ` Wu Hao
2019-04-03 18:09       ` Moritz Fischer
2019-04-03 23:43         ` Wu Hao
2019-03-25  3:07 ` [PATCH 15/17] fpga: dfl: fme: add power " Wu Hao
2019-04-11 20:07   ` Alan Tull
2019-04-12  2:50     ` Wu Hao
2019-04-15 21:17       ` Alan Tull
2019-04-17  7:36         ` Wu Hao
2019-04-12 21:05     ` Moritz Fischer
2019-04-17  7:31       ` Wu Hao
2019-03-25  3:07 ` [PATCH 16/17] fpga: dfl: fme: add global error reporting support Wu Hao
2019-04-09 21:35   ` Alan Tull
2019-04-10  1:34     ` Wu Hao
2019-03-25  3:07 ` [PATCH 17/17] fpga: dfl: fme: add performance " Wu Hao

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