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 ND_BLK_READ_FLUSH = 1,
49 struct acpi_nfit_system_address *spa;
50 struct list_head list;
55 struct acpi_nfit_control_region *dcr;
56 struct list_head list;
60 struct acpi_nfit_data_region *bdw;
61 struct list_head list;
65 struct acpi_nfit_interleave *idt;
66 struct list_head list;
70 struct acpi_nfit_flush_address *flush;
71 struct list_head list;
75 struct acpi_nfit_memory_map *memdev;
76 struct list_head list;
79 /* assembled tables for a given dimm/memory-device */
81 struct nvdimm *nvdimm;
82 struct acpi_nfit_memory_map *memdev_dcr;
83 struct acpi_nfit_memory_map *memdev_pmem;
84 struct acpi_nfit_memory_map *memdev_bdw;
85 struct acpi_nfit_control_region *dcr;
86 struct acpi_nfit_data_region *bdw;
87 struct acpi_nfit_system_address *spa_dcr;
88 struct acpi_nfit_system_address *spa_bdw;
89 struct acpi_nfit_interleave *idt_dcr;
90 struct acpi_nfit_interleave *idt_bdw;
91 struct nfit_flush *nfit_flush;
92 struct list_head list;
93 struct acpi_device *adev;
94 unsigned long dsm_mask;
97 struct acpi_nfit_desc {
98 struct nvdimm_bus_descriptor nd_desc;
99 struct acpi_table_nfit *nfit;
100 struct mutex spa_map_mutex;
101 struct mutex init_mutex;
102 struct list_head spa_maps;
103 struct list_head memdevs;
104 struct list_head flushes;
105 struct list_head dimms;
106 struct list_head spas;
107 struct list_head dcrs;
108 struct list_head bdws;
109 struct list_head idts;
110 struct nvdimm_bus *nvdimm_bus;
112 unsigned long dimm_dsm_force_en;
113 unsigned long bus_dsm_force_en;
114 int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
115 void *iobuf, u64 len, int rw);
118 enum nd_blk_mmio_selector {
126 void __pmem *aperture;
131 struct nfit_blk_mmio {
132 struct nd_blk_addr addr;
138 struct acpi_nfit_interleave *idt;
139 struct acpi_nfit_system_address *spa;
141 struct nd_region *nd_region;
142 u64 bdw_offset; /* post interleave offset */
145 void __iomem *nvdimm_flush;
154 struct nfit_spa_mapping {
155 struct acpi_nfit_desc *acpi_desc;
156 struct acpi_nfit_system_address *spa;
157 struct list_head list;
159 enum spa_map_type type;
160 struct nd_blk_addr addr;
163 static inline struct nfit_spa_mapping *to_spa_map(struct kref *kref)
165 return container_of(kref, struct nfit_spa_mapping, kref);
168 static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
169 struct nfit_mem *nfit_mem)
171 if (nfit_mem->memdev_dcr)
172 return nfit_mem->memdev_dcr;
173 return nfit_mem->memdev_pmem;
176 static inline struct acpi_nfit_desc *to_acpi_desc(
177 struct nvdimm_bus_descriptor *nd_desc)
179 return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
182 const u8 *to_nfit_uuid(enum nfit_uuids id);
183 int acpi_nfit_init(struct acpi_nfit_desc *nfit, acpi_size sz);
184 extern const struct attribute_group *acpi_nfit_attribute_groups[];
185 #endif /* __NFIT_H__ */