blob: 1b604d3fd30320faf93bae69d34dd211d9ec7f68 [file] [log] [blame]
From 8a00df91ae2b4b7ce1f5a3526d6d4a2c4a7fd0a7 Mon Sep 17 00:00:00 2001
From: Wu Hao <hao.wu@intel.com>
Date: Sat, 30 Jun 2018 08:53:28 +0800
Subject: [PATCH 1722/1795] fpga: dfl: add fpga region platform driver for FME
This patch adds fpga region platform driver for FPGA Management Engine.
It register an fpga region with given fpga manager / bridge device.
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>
Acked-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit bb61b9be3e6b001f1571b230316bf3867dc41df3)
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
drivers/fpga/Kconfig | 6 +++
drivers/fpga/Makefile | 1 +
drivers/fpga/dfl-fme-region.c | 88 +++++++++++++++++++++++++++++++++++
3 files changed, 95 insertions(+)
create mode 100644 drivers/fpga/dfl-fme-region.c
diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
index 11d1943b91d4..f99f422feec9 100644
--- a/drivers/fpga/Kconfig
+++ b/drivers/fpga/Kconfig
@@ -168,6 +168,12 @@ config FPGA_DFL_FME_BRIDGE
help
Say Y to enable FPGA Bridge driver for FPGA Management Engine.
+config FPGA_DFL_FME_REGION
+ tristate "FPGA DFL FME Region Driver"
+ depends on FPGA_DFL_FME && HAS_IOMEM
+ help
+ Say Y to enable FPGA Region driver for FPGA Management Engine.
+
config FPGA_DFL_PCI
tristate "FPGA DFL PCIe Device Driver"
depends on PCI && FPGA_DFL
diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
index cda05515ebfd..637c27512c28 100644
--- a/drivers/fpga/Makefile
+++ b/drivers/fpga/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_FPGA_DFL) += dfl.o
obj-$(CONFIG_FPGA_DFL_FME) += dfl-fme.o
obj-$(CONFIG_FPGA_DFL_FME_MGR) += dfl-fme-mgr.o
obj-$(CONFIG_FPGA_DFL_FME_BRIDGE) += dfl-fme-br.o
+obj-$(CONFIG_FPGA_DFL_FME_REGION) += dfl-fme-region.o
dfl-fme-objs := dfl-fme-main.o dfl-fme-pr.o
diff --git a/drivers/fpga/dfl-fme-region.c b/drivers/fpga/dfl-fme-region.c
new file mode 100644
index 000000000000..a6e0bde7cc31
--- /dev/null
+++ b/drivers/fpga/dfl-fme-region.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * FPGA Region Driver for FPGA Management Engine (FME)
+ *
+ * Copyright (C) 2017-2018 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>
+ */
+
+#include <linux/module.h>
+#include <linux/fpga/fpga-region.h>
+
+#include "dfl-fme-pr.h"
+
+static int fme_region_get_bridges(struct fpga_region *region)
+{
+ struct dfl_fme_region_pdata *pdata = region->priv;
+ struct device *dev = &pdata->br->dev;
+
+ return fpga_bridge_get_to_list(dev, region->info, &region->bridge_list);
+}
+
+static int fme_region_probe(struct platform_device *pdev)
+{
+ struct dfl_fme_region_pdata *pdata = dev_get_platdata(&pdev->dev);
+ struct device *dev = &pdev->dev;
+ struct fpga_region *region;
+ struct fpga_manager *mgr;
+ int ret;
+
+ mgr = fpga_mgr_get(&pdata->mgr->dev);
+ if (IS_ERR(mgr))
+ return -EPROBE_DEFER;
+
+ region = fpga_region_create(dev, mgr, fme_region_get_bridges);
+ if (!region) {
+ ret = -ENOMEM;
+ goto eprobe_mgr_put;
+ }
+
+ region->priv = pdata;
+ platform_set_drvdata(pdev, region);
+
+ ret = fpga_region_register(region);
+ if (ret)
+ goto region_free;
+
+ dev_dbg(dev, "DFL FME FPGA Region probed\n");
+
+ return 0;
+
+region_free:
+ fpga_region_free(region);
+eprobe_mgr_put:
+ fpga_mgr_put(mgr);
+ return ret;
+}
+
+static int fme_region_remove(struct platform_device *pdev)
+{
+ struct fpga_region *region = dev_get_drvdata(&pdev->dev);
+
+ fpga_region_unregister(region);
+ fpga_mgr_put(region->mgr);
+
+ return 0;
+}
+
+static struct platform_driver fme_region_driver = {
+ .driver = {
+ .name = DFL_FPGA_FME_REGION,
+ },
+ .probe = fme_region_probe,
+ .remove = fme_region_remove,
+};
+
+module_platform_driver(fme_region_driver);
+
+MODULE_DESCRIPTION("FPGA Region for DFL FPGA Management Engine");
+MODULE_AUTHOR("Intel Corporation");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:dfl-fme-region");
--
2.19.0