2 * NVDIMM Firmware Interface Table - NFIT
4 * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of version 2 of the GNU General Public License as
8 * published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
17 #include <linux/libnvdimm.h>
18 #include <linux/types.h>
19 #include <linux/uuid.h>
20 #include <linux/acpi.h>
21 #include <acpi/acuuid.h>
23 #define UUID_NFIT_BUS "2f10e7a4-9e91-11e4-89d3-123b93f75cba"
24 #define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"
25 #define ACPI_NFIT_MEM_FAILED_MASK (ACPI_NFIT_MEM_SAVE_FAILED \
26 | ACPI_NFIT_MEM_RESTORE_FAILED | ACPI_NFIT_MEM_FLUSH_FAILED \
27 | ACPI_NFIT_MEM_ARMED)
44 struct acpi_nfit_system_address *spa;
45 struct list_head list;
49 struct acpi_nfit_control_region *dcr;
50 struct list_head list;
54 struct acpi_nfit_data_region *bdw;
55 struct list_head list;
59 struct acpi_nfit_interleave *idt;
60 struct list_head list;
64 struct acpi_nfit_memory_map *memdev;
65 struct list_head list;
68 /* assembled tables for a given dimm/memory-device */
70 struct nvdimm *nvdimm;
71 struct acpi_nfit_memory_map *memdev_dcr;
72 struct acpi_nfit_memory_map *memdev_pmem;
73 struct acpi_nfit_memory_map *memdev_bdw;
74 struct acpi_nfit_control_region *dcr;
75 struct acpi_nfit_data_region *bdw;
76 struct acpi_nfit_system_address *spa_dcr;
77 struct acpi_nfit_system_address *spa_bdw;
78 struct acpi_nfit_interleave *idt_dcr;
79 struct acpi_nfit_interleave *idt_bdw;
80 struct list_head list;
81 struct acpi_device *adev;
82 unsigned long dsm_mask;
85 struct acpi_nfit_desc {
86 struct nvdimm_bus_descriptor nd_desc;
87 struct acpi_table_nfit *nfit;
88 struct mutex spa_map_mutex;
89 struct list_head spa_maps;
90 struct list_head memdevs;
91 struct list_head dimms;
92 struct list_head spas;
93 struct list_head dcrs;
94 struct list_head bdws;
95 struct list_head idts;
96 struct nvdimm_bus *nvdimm_bus;
98 unsigned long dimm_dsm_force_en;
99 int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
100 void *iobuf, u64 len, int rw);
103 enum nd_blk_mmio_selector {
109 struct nfit_blk_mmio {
119 struct acpi_nfit_interleave *idt;
120 struct acpi_nfit_system_address *spa;
122 struct nd_region *nd_region;
123 u64 bdw_offset; /* post interleave offset */
128 struct nfit_spa_mapping {
129 struct acpi_nfit_desc *acpi_desc;
130 struct acpi_nfit_system_address *spa;
131 struct list_head list;
136 static inline struct nfit_spa_mapping *to_spa_map(struct kref *kref)
138 return container_of(kref, struct nfit_spa_mapping, kref);
141 static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
142 struct nfit_mem *nfit_mem)
144 if (nfit_mem->memdev_dcr)
145 return nfit_mem->memdev_dcr;
146 return nfit_mem->memdev_pmem;
149 static inline struct acpi_nfit_desc *to_acpi_desc(
150 struct nvdimm_bus_descriptor *nd_desc)
152 return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
155 const u8 *to_nfit_uuid(enum nfit_uuids id);
156 int acpi_nfit_init(struct acpi_nfit_desc *nfit, acpi_size sz);
157 extern const struct attribute_group *acpi_nfit_attribute_groups[];
158 #endif /* __NFIT_H__ */