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-rw-r--r--drivers/nvdimm/nd-core.h165
1 files changed, 165 insertions, 0 deletions
diff --git a/drivers/nvdimm/nd-core.h b/drivers/nvdimm/nd-core.h
new file mode 100644
index 000000000..845408f10
--- /dev/null
+++ b/drivers/nvdimm/nd-core.h
@@ -0,0 +1,165 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
+ */
+#ifndef __ND_CORE_H__
+#define __ND_CORE_H__
+#include <linux/libnvdimm.h>
+#include <linux/device.h>
+#include <linux/sizes.h>
+#include <linux/mutex.h>
+#include <linux/nd.h>
+#include "nd.h"
+
+extern struct list_head nvdimm_bus_list;
+extern struct mutex nvdimm_bus_list_mutex;
+extern int nvdimm_major;
+extern struct workqueue_struct *nvdimm_wq;
+
+struct nvdimm_bus {
+ struct nvdimm_bus_descriptor *nd_desc;
+ wait_queue_head_t wait;
+ struct list_head list;
+ struct device dev;
+ int id, probe_active;
+ atomic_t ioctl_active;
+ struct list_head mapping_list;
+ struct mutex reconfig_mutex;
+ struct badrange badrange;
+};
+
+struct nvdimm {
+ unsigned long flags;
+ void *provider_data;
+ unsigned long cmd_mask;
+ struct device dev;
+ atomic_t busy;
+ int id, num_flush;
+ struct resource *flush_wpq;
+ const char *dimm_id;
+ struct {
+ const struct nvdimm_security_ops *ops;
+ unsigned long flags;
+ unsigned long ext_flags;
+ unsigned int overwrite_tmo;
+ struct kernfs_node *overwrite_state;
+ } sec;
+ struct delayed_work dwork;
+ const struct nvdimm_fw_ops *fw_ops;
+};
+
+static inline unsigned long nvdimm_security_flags(
+ struct nvdimm *nvdimm, enum nvdimm_passphrase_type ptype)
+{
+ u64 flags;
+ const u64 state_flags = 1UL << NVDIMM_SECURITY_DISABLED
+ | 1UL << NVDIMM_SECURITY_LOCKED
+ | 1UL << NVDIMM_SECURITY_UNLOCKED
+ | 1UL << NVDIMM_SECURITY_OVERWRITE;
+
+ if (!nvdimm->sec.ops)
+ return 0;
+
+ flags = nvdimm->sec.ops->get_flags(nvdimm, ptype);
+ /* disabled, locked, unlocked, and overwrite are mutually exclusive */
+ dev_WARN_ONCE(&nvdimm->dev, hweight64(flags & state_flags) > 1,
+ "reported invalid security state: %#llx\n",
+ (unsigned long long) flags);
+ return flags;
+}
+int nvdimm_security_freeze(struct nvdimm *nvdimm);
+#if IS_ENABLED(CONFIG_NVDIMM_KEYS)
+ssize_t nvdimm_security_store(struct device *dev, const char *buf, size_t len);
+void nvdimm_security_overwrite_query(struct work_struct *work);
+#else
+static inline ssize_t nvdimm_security_store(struct device *dev,
+ const char *buf, size_t len)
+{
+ return -EOPNOTSUPP;
+}
+static inline void nvdimm_security_overwrite_query(struct work_struct *work)
+{
+}
+#endif
+
+bool is_nvdimm(struct device *dev);
+bool is_nd_pmem(struct device *dev);
+bool is_nd_volatile(struct device *dev);
+static inline bool is_nd_region(struct device *dev)
+{
+ return is_nd_pmem(dev) || is_nd_volatile(dev);
+}
+static inline bool is_memory(struct device *dev)
+{
+ return is_nd_pmem(dev) || is_nd_volatile(dev);
+}
+struct nvdimm_bus *walk_to_nvdimm_bus(struct device *nd_dev);
+int __init nvdimm_bus_init(void);
+void nvdimm_bus_exit(void);
+void nvdimm_devs_exit(void);
+struct nd_region;
+void nd_region_advance_seeds(struct nd_region *nd_region, struct device *dev);
+void nd_region_create_ns_seed(struct nd_region *nd_region);
+void nd_region_create_btt_seed(struct nd_region *nd_region);
+void nd_region_create_pfn_seed(struct nd_region *nd_region);
+void nd_region_create_dax_seed(struct nd_region *nd_region);
+int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus);
+void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus);
+void nd_synchronize(void);
+void nd_device_register(struct device *dev);
+void nd_device_register_sync(struct device *dev);
+struct nd_label_id;
+char *nd_label_gen_id(struct nd_label_id *label_id, const uuid_t *uuid,
+ u32 flags);
+bool nd_is_uuid_unique(struct device *dev, uuid_t *uuid);
+struct nd_region;
+struct nvdimm_drvdata;
+struct nd_mapping;
+void nd_mapping_free_labels(struct nd_mapping *nd_mapping);
+
+int __reserve_free_pmem(struct device *dev, void *data);
+void release_free_pmem(struct nvdimm_bus *nvdimm_bus,
+ struct nd_mapping *nd_mapping);
+
+resource_size_t nd_pmem_max_contiguous_dpa(struct nd_region *nd_region,
+ struct nd_mapping *nd_mapping);
+resource_size_t nd_region_allocatable_dpa(struct nd_region *nd_region);
+resource_size_t nd_pmem_available_dpa(struct nd_region *nd_region,
+ struct nd_mapping *nd_mapping);
+resource_size_t nd_region_available_dpa(struct nd_region *nd_region);
+int nd_region_conflict(struct nd_region *nd_region, resource_size_t start,
+ resource_size_t size);
+resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd,
+ struct nd_label_id *label_id);
+int nvdimm_num_label_slots(struct nvdimm_drvdata *ndd);
+void get_ndd(struct nvdimm_drvdata *ndd);
+resource_size_t __nvdimm_namespace_capacity(struct nd_namespace_common *ndns);
+void nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
+void __nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
+bool nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
+ struct nd_namespace_common **_ndns);
+bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
+ struct nd_namespace_common **_ndns);
+ssize_t nd_namespace_store(struct device *dev,
+ struct nd_namespace_common **_ndns, const char *buf,
+ size_t len);
+struct nd_pfn *to_nd_pfn_safe(struct device *dev);
+bool is_nvdimm_bus(struct device *dev);
+
+#if IS_ENABLED(CONFIG_ND_CLAIM)
+int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio,
+ resource_size_t size);
+void devm_nsio_disable(struct device *dev, struct nd_namespace_io *nsio);
+#else
+static inline int devm_nsio_enable(struct device *dev,
+ struct nd_namespace_io *nsio, resource_size_t size)
+{
+ return -ENXIO;
+}
+
+static inline void devm_nsio_disable(struct device *dev,
+ struct nd_namespace_io *nsio)
+{
+}
+#endif
+#endif /* __ND_CORE_H__ */