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 ND_BLK_READ_FLUSH = 1,
49 struct acpi_nfit_system_address *spa;
50 struct list_head list;
54 struct acpi_nfit_control_region *dcr;
55 struct list_head list;
59 struct acpi_nfit_data_region *bdw;
60 struct list_head list;
64 struct acpi_nfit_interleave *idt;
65 struct list_head list;
69 struct acpi_nfit_flush_address *flush;
70 struct list_head list;
74 struct acpi_nfit_memory_map *memdev;
75 struct list_head list;
78 /* assembled tables for a given dimm/memory-device */
80 struct nvdimm *nvdimm;
81 struct acpi_nfit_memory_map *memdev_dcr;
82 struct acpi_nfit_memory_map *memdev_pmem;
83 struct acpi_nfit_memory_map *memdev_bdw;
84 struct acpi_nfit_control_region *dcr;
85 struct acpi_nfit_data_region *bdw;
86 struct acpi_nfit_system_address *spa_dcr;
87 struct acpi_nfit_system_address *spa_bdw;
88 struct acpi_nfit_interleave *idt_dcr;
89 struct acpi_nfit_interleave *idt_bdw;
90 struct nfit_flush *nfit_flush;
91 struct list_head list;
92 struct acpi_device *adev;
93 unsigned long dsm_mask;
96 struct acpi_nfit_desc {
97 struct nvdimm_bus_descriptor nd_desc;
98 struct acpi_table_nfit *nfit;
99 struct mutex spa_map_mutex;
100 struct list_head spa_maps;
101 struct list_head memdevs;
102 struct list_head flushes;
103 struct list_head dimms;
104 struct list_head spas;
105 struct list_head dcrs;
106 struct list_head bdws;
107 struct list_head idts;
108 struct nvdimm_bus *nvdimm_bus;
110 unsigned long dimm_dsm_force_en;
111 unsigned long bus_dsm_force_en;
112 int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
113 void *iobuf, u64 len, int rw);
116 enum nd_blk_mmio_selector {
124 void __pmem *aperture;
129 struct nfit_blk_mmio {
130 struct nd_blk_addr addr;
136 struct acpi_nfit_interleave *idt;
137 struct acpi_nfit_system_address *spa;
139 struct nd_region *nd_region;
140 u64 bdw_offset; /* post interleave offset */
143 void __iomem *nvdimm_flush;
152 struct nfit_spa_mapping {
153 struct acpi_nfit_desc *acpi_desc;
154 struct acpi_nfit_system_address *spa;
155 struct list_head list;
157 enum spa_map_type type;
158 struct nd_blk_addr addr;
161 static inline struct nfit_spa_mapping *to_spa_map(struct kref *kref)
163 return container_of(kref, struct nfit_spa_mapping, kref);
166 static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
167 struct nfit_mem *nfit_mem)
169 if (nfit_mem->memdev_dcr)
170 return nfit_mem->memdev_dcr;
171 return nfit_mem->memdev_pmem;
174 static inline struct acpi_nfit_desc *to_acpi_desc(
175 struct nvdimm_bus_descriptor *nd_desc)
177 return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
180 const u8 *to_nfit_uuid(enum nfit_uuids id);
181 int acpi_nfit_init(struct acpi_nfit_desc *nfit, acpi_size sz);
182 extern const struct attribute_group *acpi_nfit_attribute_groups[];
183 #endif /* __NFIT_H__ */