fpga: dfl: add fpga region platform driver for FME (bb61b9be) · Commits · 戴 / test

drivers/fpga/Kconfig

+6 −0

Original line number	Diff line number	Diff line
		@@ -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

drivers/fpga/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -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

drivers/fpga/dfl-fme-region.c

0 → 100644

+88 −0

Original line number	Diff line number	Diff line
		// 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");

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