[PATCH v2 16/22] fpga: intel: add fpga bridge platform driver for FME

From	Wu Hao <hao.wu@intel.com>
Newsgroups	linux.kernel
Subject	[PATCH v2 16/22] fpga: intel: add fpga bridge platform driver for FME
Date	2017-06-26 04:10 +0200
Message-ID	<tWrDt-4AX-31@gated-at.bofh.it> (permalink)
References	<tWrtL-4is-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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This patch adds fpga bridge platform driver for Intel FPGA Management
Engine. It implements the enable_set call back for fpga bridge.

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: Wu Hao <hao.wu@intel.com>
---
 drivers/fpga/Kconfig             |  7 ++++
 drivers/fpga/Makefile            |  1 +
 drivers/fpga/intel-fpga-fme-br.c | 77 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 85 insertions(+)
 create mode 100644 drivers/fpga/intel-fpga-fme-br.c

diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
index 6f2f623..05e2a8e 100644
--- a/drivers/fpga/Kconfig
+++ b/drivers/fpga/Kconfig
@@ -158,6 +158,13 @@ config INTEL_FPGA_FME_MGR
 	  Say Y to enable FPGA Manager driver for Intel FPGA Management
 	  Engine.
 
+config INTEL_FPGA_FME_BRIDGE
+	tristate "Intel FPGA FME Bridge Driver"
+	depends on INTEL_FPGA_FME && FPGA_BRIDGE
+	help
+	  Say Y to enable FPGA Bridge driver for Intel FPGA Management
+	  Engine.
+
 endif
 
 endif # FPGA
diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
index d1d588b..131c105 100644
--- a/drivers/fpga/Makefile
+++ b/drivers/fpga/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_OF_FPGA_REGION)		+= of-fpga-region.o
 obj-$(CONFIG_INTEL_FPGA_PCI)		+= intel-fpga-pci.o
 obj-$(CONFIG_INTEL_FPGA_FME)		+= intel-fpga-fme.o
 obj-$(CONFIG_INTEL_FPGA_FME_MGR)	+= intel-fpga-fme-mgr.o
+obj-$(CONFIG_INTEL_FPGA_FME_BRIDGE)	+= intel-fpga-fme-br.o
 
 intel-fpga-pci-objs := intel-pcie.o intel-feature-dev.o
 intel-fpga-fme-objs := intel-fme-main.o intel-fme-pr.o
diff --git a/drivers/fpga/intel-fpga-fme-br.c b/drivers/fpga/intel-fpga-fme-br.c
new file mode 100644
index 0000000..9b922d2
--- /dev/null
+++ b/drivers/fpga/intel-fpga-fme-br.c
@@ -0,0 +1,77 @@
+/*
+ * FPGA Bridge Driver for Intel FPGA Management Engine (FME)
+ *
+ * Copyright (C) 2017 Intel Corporation, Inc.
+ *
+ * Authors:
+ *   Wu Hao <hao.wu@intel.com>
+ *   Joseph Grecco <joe.grecco@intel.com>
+ *   Enno Luebbers <enno.luebbers@intel.com>
+ *   Tim Whisonant <tim.whisonant@intel.com>
+ *   Ananda Ravuri <ananda.ravuri@intel.com>
+ *   Henry Mitchel <henry.mitchel@intel.com>
+ *
+ * This work is licensed under the terms of the GNU GPL version 2. See
+ * the COPYING file in the top-level directory.
+ */
+
+#include <linux/module.h>
+#include <linux/fpga/fpga-bridge.h>
+
+#include "intel-feature-dev.h"
+#include "intel-fme.h"
+
+static int fme_bridge_enable_set(struct fpga_bridge *bridge, bool enable)
+{
+	struct fme_br_pdata *pdata = bridge->priv;
+	int ret = 0;
+
+	if (enable)
+		fpga_port_enable(pdata->port);
+	else
+		ret = fpga_port_disable(pdata->port);
+
+	return ret;
+}
+
+static const struct fpga_bridge_ops fme_bridge_ops = {
+	.enable_set = fme_bridge_enable_set,
+};
+
+static int fme_br_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct fme_br_pdata *pdata = dev_get_platdata(dev);
+	int ret;
+
+	ret = fpga_bridge_register(dev, "Intel FPGA FME Bridge",
+				   &fme_bridge_ops, pdata);
+	if (ret)
+		dev_err(dev, "unable to register FPGA Bridge\n");
+
+	dev_dbg(dev, "Intel FME FPGA Bridge probed\n");
+
+	return ret;
+}
+
+static int fme_br_remove(struct platform_device *pdev)
+{
+	fpga_bridge_unregister(&pdev->dev);
+
+	return 0;
+}
+
+static struct platform_driver fme_br_driver = {
+	.driver	= {
+		.name    = INTEL_FPGA_FME_BRIDGE,
+	},
+	.probe   = fme_br_probe,
+	.remove  = fme_br_remove,
+};
+
+module_platform_driver(fme_br_driver);
+
+MODULE_DESCRIPTION("FPGA Bridge for Intel FPGA Management Engine");
+MODULE_AUTHOR("Intel Corporation");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:intel-fpga-fme-bridge");
-- 
1.8.3.1

Thread

[PATCH v2 00/22] Intel FPGA Device Drivers Wu Hao <hao.wu@intel.com> - 2017-06-26 04:00 +0200
  [PATCH v2 02/22] fpga: add FPGA device framework Wu Hao <hao.wu@intel.com> - 2017-06-26 04:00 +0200
  [PATCH v2 05/22] fpga: mgr: add status for fpga-mgr Wu Hao <hao.wu@intel.com> - 2017-06-26 04:00 +0200
  [PATCH v2 01/22] docs: fpga: add a document for Intel FPGA driver overview Wu Hao <hao.wu@intel.com> - 2017-06-26 04:00 +0200
  [PATCH v2 04/22] fpga: mgr: add region_id to fpga_image_info Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 09/22] fpga: intel: pcie: adds fpga_for_each_port callback for fme device Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 21/22] fpga: intel: afu: add user afu sub feature support Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 20/22] fpga: intel: afu add FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 11/22] fpga: intel: add FPGA Management Engine driver basic framework Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 06/22] fpga: intel: add FPGA PCIe device driver Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 12/22] fpga: intel: fme: add header sub feature support Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 19/22] fpga: intel: afu: add header sub feature support Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 15/22] fpga: intel: add fpga manager platform driver for FME Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 14/22] fpga: intel: fme: add partial reconfiguration sub feature support Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 10/22] fpga: intel: add feature device infrastructure Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 13/22] fpga: intel: fme: add FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 17/22] fpga: intel: add fpga region platform driver for FME Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 07/22] fpga: intel: pcie: parse feature list and create platform device for features. Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 18/22] fpga: intel: add FPGA Accelerated Function Unit driver basic framework Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 22/22] fpga: intel: afu: add FPGA_PORT_DMA_MAP/UNMAP ioctls support Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 16/22] fpga: intel: add fpga bridge platform driver for FME Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200
  [PATCH v2 08/22] fpga: intel: pcie: add chardev support for feature devices Wu Hao <hao.wu@intel.com> - 2017-06-26 04:10 +0200

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