diff options
Diffstat (limited to 'drivers/nvdimm/label.h')
| -rw-r--r-- | drivers/nvdimm/label.h | 114 |
1 files changed, 92 insertions, 22 deletions
diff --git a/drivers/nvdimm/label.h b/drivers/nvdimm/label.h index e9a2ad3c2150..0650fb4b9821 100644 --- a/drivers/nvdimm/label.h +++ b/drivers/nvdimm/label.h @@ -1,14 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * 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 __LABEL_H__ #define __LABEL_H__ @@ -38,12 +30,11 @@ enum { ND_NSINDEX_INIT = 0x1, }; -static const char NSINDEX_SIGNATURE[] = "NAMESPACE_INDEX\0"; - /** * struct nd_namespace_index - label set superblock * @sig: NAMESPACE_INDEX\0 * @flags: placeholder + * @labelsize: log2 size (v1 labels 128 bytes v2 labels 256 bytes) * @seq: sequence number for this index * @myoff: offset of this index in label area * @mysize: size of this index struct @@ -53,7 +44,7 @@ static const char NSINDEX_SIGNATURE[] = "NAMESPACE_INDEX\0"; * @major: label area major version * @minor: label area minor version * @checksum: fletcher64 of all fields - * @free[0]: bitmap, nlabel bits + * @free: bitmap, nlabel bits * * The size of free[] is rounded up so the total struct size is a * multiple of NSINDEX_ALIGN bytes. Any bits this allocates beyond @@ -72,11 +63,43 @@ struct nd_namespace_index { __le16 major; __le16 minor; __le64 checksum; - u8 free[0]; + u8 free[]; +}; + +/** + * struct cxl_region_label - CXL 2.0 Table 211 + * @type: uuid identifying this label format (region) + * @uuid: uuid for the region this label describes + * @flags: NSLABEL_FLAG_UPDATING (all other flags reserved) + * @nlabel: 1 per interleave-way in the region + * @position: this label's position in the set + * @dpa: start address in device-local capacity for this label + * @rawsize: size of this label's contribution to region + * @hpa: mandatory system physical address to map this region + * @slot: slot id of this label in label area + * @ig: interleave granularity (1 << @ig) * 256 bytes + * @align: alignment in SZ_256M blocks + * @reserved: reserved + * @checksum: fletcher64 sum of this label + */ +struct cxl_region_label { + u8 type[NSLABEL_UUID_LEN]; + u8 uuid[NSLABEL_UUID_LEN]; + __le32 flags; + __le16 nlabel; + __le16 position; + __le64 dpa; + __le64 rawsize; + __le64 hpa; + __le32 slot; + __le32 ig; + __le32 align; + u8 reserved[0xac]; + __le64 checksum; }; /** - * struct nd_namespace_label - namespace superblock + * struct nvdimm_efi_label - namespace superblock * @uuid: UUID per RFC 4122 * @name: optional name (NULL-terminated) * @flags: see NSLABEL_FLAG_* @@ -87,9 +110,14 @@ struct nd_namespace_index { * @dpa: DPA of NVM range on this DIMM * @rawsize: size of namespace * @slot: slot of this label in label area - * @unused: must be zero + * @align: physical address alignment of the namespace + * @reserved: reserved + * @type_guid: copy of struct acpi_nfit_system_address.range_guid + * @abstraction_guid: personality id (btt, btt2, fsdax, devdax....) + * @reserved2: reserved + * @checksum: fletcher64 sum of this object */ -struct nd_namespace_label { +struct nvdimm_efi_label { u8 uuid[NSLABEL_UUID_LEN]; u8 name[NSLABEL_NAME_LEN]; __le32 flags; @@ -102,7 +130,7 @@ struct nd_namespace_label { __le32 slot; /* * Accessing fields past this point should be gated by a - * namespace_label_has() check. + * efi_namespace_label_has() check. */ u8 align; u8 reserved[3]; @@ -112,14 +140,60 @@ struct nd_namespace_label { __le64 checksum; }; +/** + * struct nvdimm_cxl_label - CXL 2.0 Table 212 + * @type: uuid identifying this label format (namespace) + * @uuid: uuid for the namespace this label describes + * @name: friendly name for the namespace + * @flags: NSLABEL_FLAG_UPDATING (all other flags reserved) + * @nrange: discontiguous namespace support + * @position: this label's position in the set + * @dpa: start address in device-local capacity for this label + * @rawsize: size of this label's contribution to namespace + * @slot: slot id of this label in label area + * @align: alignment in SZ_256M blocks + * @region_uuid: host interleave set identifier + * @abstraction_uuid: personality driver for this namespace + * @lbasize: address geometry for disk-like personalities + * @reserved: reserved + * @checksum: fletcher64 sum of this label + */ +struct nvdimm_cxl_label { + u8 type[NSLABEL_UUID_LEN]; + u8 uuid[NSLABEL_UUID_LEN]; + u8 name[NSLABEL_NAME_LEN]; + __le32 flags; + __le16 nrange; + __le16 position; + __le64 dpa; + __le64 rawsize; + __le32 slot; + __le32 align; + u8 region_uuid[16]; + u8 abstraction_uuid[16]; + __le16 lbasize; + u8 reserved[0x56]; + __le64 checksum; +}; + +struct nd_namespace_label { + union { + struct nvdimm_cxl_label cxl; + struct nvdimm_efi_label efi; + }; +}; + #define NVDIMM_BTT_GUID "8aed63a2-29a2-4c66-8b12-f05d15d3922a" #define NVDIMM_BTT2_GUID "18633bfc-1735-4217-8ac9-17239282d3f8" #define NVDIMM_PFN_GUID "266400ba-fb9f-4677-bcb0-968f11d0d225" #define NVDIMM_DAX_GUID "97a86d9c-3cdd-4eda-986f-5068b4f80088" +#define CXL_REGION_UUID "529d7c61-da07-47c4-a93f-ecdf2c06f444" +#define CXL_NAMESPACE_UUID "68bb2c0a-5a77-4937-9f85-3caf41a0f93c" + /** * struct nd_label_id - identifier string for dpa allocation - * @id: "{blk|pmem}-<namespace uuid>" + * @id: "pmem-<namespace uuid>" */ struct nd_label_id { char id[ND_LABEL_ID_SIZE]; @@ -145,12 +219,8 @@ struct nd_namespace_label *nd_label_active(struct nvdimm_drvdata *ndd, int n); u32 nd_label_alloc_slot(struct nvdimm_drvdata *ndd); bool nd_label_free_slot(struct nvdimm_drvdata *ndd, u32 slot); u32 nd_label_nfree(struct nvdimm_drvdata *ndd); -enum nvdimm_claim_class to_nvdimm_cclass(guid_t *guid); struct nd_region; struct nd_namespace_pmem; -struct nd_namespace_blk; int nd_pmem_namespace_label_update(struct nd_region *nd_region, struct nd_namespace_pmem *nspm, resource_size_t size); -int nd_blk_namespace_label_update(struct nd_region *nd_region, - struct nd_namespace_blk *nsblk, resource_size_t size); #endif /* __LABEL_H__ */ |