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path: root/drivers/fpga/dfl-fme-region.c
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Diffstat (limited to 'drivers/fpga/dfl-fme-region.c')
-rw-r--r--drivers/fpga/dfl-fme-region.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/fpga/dfl-fme-region.c b/drivers/fpga/dfl-fme-region.c
new file mode 100644
index 000000000000..0b7e19c27c6d
--- /dev/null
+++ b/drivers/fpga/dfl-fme-region.c
@@ -0,0 +1,89 @@
+// 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;
+ region->compat_id = mgr->compat_id;
+ 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");