@@ -140,6 +140,16 @@ config FPGA_DFL
Gate Array (FPGA) solutions which implement Device Feature List.
It provides enumeration APIs, and feature device infrastructure.
+config FPGA_DFL_FME
+ tristate "FPGA DFL FME Driver"
+ depends on FPGA_DFL
+ help
+ The FPGA Management Engine (FME) is a feature device implemented
+ under Device Feature List (DFL) framework. Select this option to
+ enable the platform device driver for FME which implements all
+ FPGA platform level management features. There shall be 1 FME
+ per DFL based FPGA device.
+
config INTEL_FPGA_DFL_PCI
tristate "Intel FPGA DFL PCIe Device Driver"
depends on PCI && FPGA_DFL
@@ -30,6 +30,9 @@ obj-$(CONFIG_OF_FPGA_REGION) += of-fpga-region.o
# FPGA Device Feature List Support
obj-$(CONFIG_FPGA_DFL) += fpga-dfl.o
+obj-$(CONFIG_FPGA_DFL_FME) += fpga-dfl-fme.o
+
+fpga-dfl-fme-objs := dfl-fme-main.o
# Drivers for FPGAs which implement DFL
obj-$(CONFIG_INTEL_FPGA_DFL_PCI) += intel-dfl-pci.o
new file mode 100644
@@ -0,0 +1,160 @@
+/*
+ * Driver for FPGA Management Engine (FME)
+ *
+ * Copyright (C) 2017 Intel Corporation, Inc.
+ *
+ * Authors:
+ * Kang Luwei <luwei.kang@intel.com>
+ * Xiao Guangrong <guangrong.xiao@linux.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.
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include "fpga-dfl.h"
+
+static int fme_hdr_init(struct platform_device *pdev, struct feature *feature)
+{
+ dev_dbg(&pdev->dev, "FME HDR Init.\n");
+
+ return 0;
+}
+
+static void fme_hdr_uinit(struct platform_device *pdev, struct feature *feature)
+{
+ dev_dbg(&pdev->dev, "FME HDR UInit.\n");
+}
+
+static const struct feature_ops fme_hdr_ops = {
+ .init = fme_hdr_init,
+ .uinit = fme_hdr_uinit,
+};
+
+static struct feature_driver fme_feature_drvs[] = {
+ {
+ .name = FME_FEATURE_HEADER,
+ .ops = &fme_hdr_ops,
+ },
+ {
+ .ops = NULL,
+ },
+};
+
+static int fme_open(struct inode *inode, struct file *filp)
+{
+ struct platform_device *fdev = fpga_inode_to_feature_dev(inode);
+ struct feature_platform_data *pdata = dev_get_platdata(&fdev->dev);
+ int ret;
+
+ if (WARN_ON(!pdata))
+ return -ENODEV;
+
+ ret = feature_dev_use_begin(pdata);
+ if (ret)
+ return ret;
+
+ dev_dbg(&fdev->dev, "Device File Open\n");
+ filp->private_data = pdata;
+
+ return 0;
+}
+
+static int fme_release(struct inode *inode, struct file *filp)
+{
+ struct feature_platform_data *pdata = filp->private_data;
+ struct platform_device *pdev = pdata->dev;
+
+ dev_dbg(&pdev->dev, "Device File Release\n");
+ feature_dev_use_end(pdata);
+
+ return 0;
+}
+
+static long fme_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ struct feature_platform_data *pdata = filp->private_data;
+ struct platform_device *pdev = pdata->dev;
+ struct feature *f;
+ long ret;
+
+ dev_dbg(&pdev->dev, "%s cmd 0x%x\n", __func__, cmd);
+
+ switch (cmd) {
+ default:
+ /*
+ * Let sub-feature's ioctl function to handle the cmd
+ * Sub-feature's ioctl returns -ENODEV when cmd is not
+ * handled in this sub feature, and returns 0 and other
+ * error code if cmd is handled.
+ */
+ fpga_dev_for_each_feature(pdata, f) {
+ if (f->ops && f->ops->ioctl) {
+ ret = f->ops->ioctl(pdev, f, cmd, arg);
+ if (ret == -ENODEV)
+ continue;
+ else
+ return ret;
+ }
+ }
+ }
+
+ return -EINVAL;
+}
+
+static const struct file_operations fme_fops = {
+ .owner = THIS_MODULE,
+ .open = fme_open,
+ .release = fme_release,
+ .unlocked_ioctl = fme_ioctl,
+};
+
+static int fme_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = fpga_dev_feature_init(pdev, fme_feature_drvs);
+ if (ret)
+ goto exit;
+
+ ret = fpga_register_dev_ops(pdev, &fme_fops, THIS_MODULE);
+ if (ret)
+ goto feature_uinit;
+
+ return 0;
+
+feature_uinit:
+ fpga_dev_feature_uinit(pdev);
+exit:
+ return ret;
+}
+
+static int fme_remove(struct platform_device *pdev)
+{
+ fpga_dev_feature_uinit(pdev);
+ fpga_unregister_dev_ops(pdev);
+
+ return 0;
+}
+
+static struct platform_driver fme_driver = {
+ .driver = {
+ .name = FPGA_FEATURE_DEV_FME,
+ },
+ .probe = fme_probe,
+ .remove = fme_remove,
+};
+
+module_platform_driver(fme_driver);
+
+MODULE_DESCRIPTION("FPGA Management Engine driver");
+MODULE_AUTHOR("Intel Corporation");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:fpga-dfl-fme");