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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
commit76cb841cb886eef6b3bee341a2266c76578724ad (patch)
treef5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /drivers/nvdimm/nd-core.h
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/nvdimm/nd-core.h')
-rw-r--r--drivers/nvdimm/nd-core.h137
1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/nvdimm/nd-core.h b/drivers/nvdimm/nd-core.h
new file mode 100644
index 000000000..adf62a6c0
--- /dev/null
+++ b/drivers/nvdimm/nd-core.h
@@ -0,0 +1,137 @@
+/*
+ * 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.
+ */
+#ifndef __ND_CORE_H__
+#define __ND_CORE_H__
+#include <linux/libnvdimm.h>
+#include <linux/device.h>
+#include <linux/libnvdimm.h>
+#include <linux/sizes.h>
+#include <linux/mutex.h>
+#include <linux/nd.h>
+
+extern struct list_head nvdimm_bus_list;
+extern struct mutex nvdimm_bus_list_mutex;
+extern int nvdimm_major;
+
+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;
+};
+
+/**
+ * struct blk_alloc_info - tracking info for BLK dpa scanning
+ * @nd_mapping: blk region mapping boundaries
+ * @available: decremented in alias_dpa_busy as aliased PMEM is scanned
+ * @busy: decremented in blk_dpa_busy to account for ranges already
+ * handled by alias_dpa_busy
+ * @res: alias_dpa_busy interprets this a free space range that needs to
+ * be truncated to the valid BLK allocation starting DPA, blk_dpa_busy
+ * treats it as a busy range that needs the aliased PMEM ranges
+ * truncated.
+ */
+struct blk_alloc_info {
+ struct nd_mapping *nd_mapping;
+ resource_size_t available, busy;
+ struct resource *res;
+};
+
+bool is_nvdimm(struct device *dev);
+bool is_nd_pmem(struct device *dev);
+bool is_nd_volatile(struct device *dev);
+bool is_nd_blk(struct device *dev);
+static inline bool is_nd_region(struct device *dev)
+{
+ return is_nd_pmem(dev) || is_nd_blk(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);
+void nd_region_devs_exit(void);
+void nd_region_probe_success(struct nvdimm_bus *nvdimm_bus, struct device *dev);
+struct nd_region;
+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);
+void nd_region_disable(struct nvdimm_bus *nvdimm_bus, struct device *dev);
+int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus);
+void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus);
+void nd_synchronize(void);
+int nvdimm_bus_register_dimms(struct nvdimm_bus *nvdimm_bus);
+int nvdimm_bus_register_regions(struct nvdimm_bus *nvdimm_bus);
+int nvdimm_bus_init_interleave_sets(struct nvdimm_bus *nvdimm_bus);
+void __nd_device_register(struct device *dev);
+int nd_match_dimm(struct device *dev, void *data);
+struct nd_label_id;
+char *nd_label_gen_id(struct nd_label_id *label_id, u8 *uuid, u32 flags);
+bool nd_is_uuid_unique(struct device *dev, u8 *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 *overlap);
+resource_size_t nd_blk_available_dpa(struct nd_region *nd_region);
+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 alias_dpa_busy(struct device *dev, void *data);
+struct resource *nsblk_add_resource(struct nd_region *nd_region,
+ struct nvdimm_drvdata *ndd, struct nd_namespace_blk *nsblk,
+ resource_size_t start);
+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);
+#endif /* __ND_CORE_H__ */