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)
48 struct acpi_nfit_system_address *spa;
49 struct list_head list;
53 struct acpi_nfit_control_region *dcr;
54 struct list_head list;
58 struct acpi_nfit_data_region *bdw;
59 struct list_head list;
63 struct acpi_nfit_interleave *idt;
64 struct list_head list;
68 struct acpi_nfit_flush_address *flush;
69 struct list_head list;
73 struct acpi_nfit_memory_map *memdev;
74 struct list_head list;
77 /* assembled tables for a given dimm/memory-device */
79 struct nvdimm *nvdimm;
80 struct acpi_nfit_memory_map *memdev_dcr;
81 struct acpi_nfit_memory_map *memdev_pmem;
82 struct acpi_nfit_memory_map *memdev_bdw;
83 struct acpi_nfit_control_region *dcr;
84 struct acpi_nfit_data_region *bdw;
85 struct acpi_nfit_system_address *spa_dcr;
86 struct acpi_nfit_system_address *spa_bdw;
87 struct acpi_nfit_interleave *idt_dcr;
88 struct acpi_nfit_interleave *idt_bdw;
89 struct nfit_flush *nfit_flush;
90 struct list_head list;
91 struct acpi_device *adev;
92 unsigned long dsm_mask;
95 struct acpi_nfit_desc {
96 struct nvdimm_bus_descriptor nd_desc;
97 struct acpi_table_nfit *nfit;
98 struct mutex spa_map_mutex;
99 struct list_head spa_maps;
100 struct list_head memdevs;
101 struct list_head flushes;
102 struct list_head dimms;
103 struct list_head spas;
104 struct list_head dcrs;
105 struct list_head bdws;
106 struct list_head idts;
107 struct nvdimm_bus *nvdimm_bus;
109 unsigned long dimm_dsm_force_en;
110 int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
111 void *iobuf, u64 len, int rw);
114 enum nd_blk_mmio_selector {
120 struct nfit_blk_mmio {
123 void __pmem *aperture;
130 struct acpi_nfit_interleave *idt;
131 struct acpi_nfit_system_address *spa;
133 struct nd_region *nd_region;
134 u64 bdw_offset; /* post interleave offset */
137 void __iomem *nvdimm_flush;
146 struct nfit_spa_mapping {
147 struct acpi_nfit_desc *acpi_desc;
148 struct acpi_nfit_system_address *spa;
149 struct list_head list;
154 static inline struct nfit_spa_mapping *to_spa_map(struct kref *kref)
156 return container_of(kref, struct nfit_spa_mapping, kref);
159 static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
160 struct nfit_mem *nfit_mem)
162 if (nfit_mem->memdev_dcr)
163 return nfit_mem->memdev_dcr;
164 return nfit_mem->memdev_pmem;
167 static inline struct acpi_nfit_desc *to_acpi_desc(
168 struct nvdimm_bus_descriptor *nd_desc)
170 return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
173 const u8 *to_nfit_uuid(enum nfit_uuids id);
174 int acpi_nfit_init(struct acpi_nfit_desc *nfit, acpi_size sz);
175 extern const struct attribute_group *acpi_nfit_attribute_groups[];
176 #endif /* __NFIT_H__ */