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_NOT_ARMED)
44 NFIT_FIC_BYTE = 0x101, /* byte-addressable energy backed */
45 NFIT_FIC_BLK = 0x201, /* block-addressable non-energy backed */
46 NFIT_FIC_BYTEN = 0x301, /* byte-addressable non-energy backed */
50 ND_BLK_READ_FLUSH = 1,
55 struct acpi_nfit_system_address *spa;
56 struct list_head list;
61 struct acpi_nfit_control_region *dcr;
62 struct list_head list;
66 struct acpi_nfit_data_region *bdw;
67 struct list_head list;
71 struct acpi_nfit_interleave *idt;
72 struct list_head list;
76 struct acpi_nfit_flush_address *flush;
77 struct list_head list;
81 struct acpi_nfit_memory_map *memdev;
82 struct list_head list;
85 /* assembled tables for a given dimm/memory-device */
87 struct nvdimm *nvdimm;
88 struct acpi_nfit_memory_map *memdev_dcr;
89 struct acpi_nfit_memory_map *memdev_pmem;
90 struct acpi_nfit_memory_map *memdev_bdw;
91 struct acpi_nfit_control_region *dcr;
92 struct acpi_nfit_data_region *bdw;
93 struct acpi_nfit_system_address *spa_dcr;
94 struct acpi_nfit_system_address *spa_bdw;
95 struct acpi_nfit_interleave *idt_dcr;
96 struct acpi_nfit_interleave *idt_bdw;
97 struct nfit_flush *nfit_flush;
98 struct list_head list;
99 struct acpi_device *adev;
100 unsigned long dsm_mask;
103 struct acpi_nfit_desc {
104 struct nvdimm_bus_descriptor nd_desc;
105 struct acpi_table_header acpi_header;
106 struct acpi_nfit_header *nfit;
107 struct mutex spa_map_mutex;
108 struct mutex init_mutex;
109 struct list_head spa_maps;
110 struct list_head memdevs;
111 struct list_head flushes;
112 struct list_head dimms;
113 struct list_head spas;
114 struct list_head dcrs;
115 struct list_head bdws;
116 struct list_head idts;
117 struct nvdimm_bus *nvdimm_bus;
119 unsigned long dimm_dsm_force_en;
120 unsigned long bus_dsm_force_en;
121 int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
122 void *iobuf, u64 len, int rw);
125 enum nd_blk_mmio_selector {
133 void __pmem *aperture;
138 struct nfit_blk_mmio {
139 struct nd_blk_addr addr;
145 struct acpi_nfit_interleave *idt;
146 struct acpi_nfit_system_address *spa;
148 struct nd_region *nd_region;
149 u64 bdw_offset; /* post interleave offset */
152 void __iomem *nvdimm_flush;
161 struct nfit_spa_mapping {
162 struct acpi_nfit_desc *acpi_desc;
163 struct acpi_nfit_system_address *spa;
164 struct list_head list;
166 enum spa_map_type type;
167 struct nd_blk_addr addr;
170 static inline struct nfit_spa_mapping *to_spa_map(struct kref *kref)
172 return container_of(kref, struct nfit_spa_mapping, kref);
175 static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
176 struct nfit_mem *nfit_mem)
178 if (nfit_mem->memdev_dcr)
179 return nfit_mem->memdev_dcr;
180 return nfit_mem->memdev_pmem;
183 static inline struct acpi_nfit_desc *to_acpi_desc(
184 struct nvdimm_bus_descriptor *nd_desc)
186 return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
189 const u8 *to_nfit_uuid(enum nfit_uuids id);
190 int acpi_nfit_init(struct acpi_nfit_desc *nfit, acpi_size sz);
191 extern const struct attribute_group *acpi_nfit_attribute_groups[];
192 #endif /* __NFIT_H__ */