X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fnvdimm%2Fdimm.c;fp=kernel%2Fdrivers%2Fnvdimm%2Fdimm.c;h=71d12bb67339148bac8edc2e70c907aff1852f5a;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hp=0000000000000000000000000000000000000000;hpb=f93b97fd65072de626c074dbe099a1fff05ce060;p=kvmfornfv.git

diff --git a/kernel/drivers/nvdimm/dimm.c b/kernel/drivers/nvdimm/dimm.c
new file mode 100644
index 000000000..71d12bb67
--- /dev/null
+++ b/kernel/drivers/nvdimm/dimm.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+#include <linux/vmalloc.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/sizes.h>
+#include <linux/ndctl.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/nd.h>
+#include "label.h"
+#include "nd.h"
+
+static int nvdimm_probe(struct device *dev)
+{
+	struct nvdimm_drvdata *ndd;
+	int rc;
+
+	ndd = kzalloc(sizeof(*ndd), GFP_KERNEL);
+	if (!ndd)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, ndd);
+	ndd->dpa.name = dev_name(dev);
+	ndd->ns_current = -1;
+	ndd->ns_next = -1;
+	ndd->dpa.start = 0;
+	ndd->dpa.end = -1;
+	ndd->dev = dev;
+	get_device(dev);
+	kref_init(&ndd->kref);
+
+	rc = nvdimm_init_nsarea(ndd);
+	if (rc)
+		goto err;
+
+	rc = nvdimm_init_config_data(ndd);
+	if (rc)
+		goto err;
+
+	dev_dbg(dev, "config data size: %d\n", ndd->nsarea.config_size);
+
+	nvdimm_bus_lock(dev);
+	ndd->ns_current = nd_label_validate(ndd);
+	ndd->ns_next = nd_label_next_nsindex(ndd->ns_current);
+	nd_label_copy(ndd, to_next_namespace_index(ndd),
+			to_current_namespace_index(ndd));
+	rc = nd_label_reserve_dpa(ndd);
+	nvdimm_bus_unlock(dev);
+
+	if (rc)
+		goto err;
+
+	return 0;
+
+ err:
+	put_ndd(ndd);
+	return rc;
+}
+
+static int nvdimm_remove(struct device *dev)
+{
+	struct nvdimm_drvdata *ndd = dev_get_drvdata(dev);
+
+	nvdimm_bus_lock(dev);
+	dev_set_drvdata(dev, NULL);
+	nvdimm_bus_unlock(dev);
+	put_ndd(ndd);
+
+	return 0;
+}
+
+static struct nd_device_driver nvdimm_driver = {
+	.probe = nvdimm_probe,
+	.remove = nvdimm_remove,
+	.drv = {
+		.name = "nvdimm",
+	},
+	.type = ND_DRIVER_DIMM,
+};
+
+int __init nvdimm_init(void)
+{
+	return nd_driver_register(&nvdimm_driver);
+}
+
+void nvdimm_exit(void)
+{
+	driver_unregister(&nvdimm_driver.drv);
+}
+
+MODULE_ALIAS_ND_DEVICE(ND_DEVICE_DIMM);