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__ */