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b94d5230 DW |
1 | /* |
2 | * NVDIMM Firmware Interface Table - NFIT | |
3 | * | |
4 | * Copyright(c) 2013-2015 Intel Corporation. All rights reserved. | |
5 | * | |
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. | |
9 | * | |
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. | |
14 | */ | |
15 | #ifndef __NFIT_H__ | |
16 | #define __NFIT_H__ | |
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> | |
22 | ||
23 | #define UUID_NFIT_BUS "2f10e7a4-9e91-11e4-89d3-123b93f75cba" | |
24 | #define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66" | |
58138820 DW |
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) | |
b94d5230 DW |
28 | |
29 | enum nfit_uuids { | |
30 | NFIT_SPA_VOLATILE, | |
31 | NFIT_SPA_PM, | |
32 | NFIT_SPA_DCR, | |
33 | NFIT_SPA_BDW, | |
34 | NFIT_SPA_VDISK, | |
35 | NFIT_SPA_VCD, | |
36 | NFIT_SPA_PDISK, | |
37 | NFIT_SPA_PCD, | |
38 | NFIT_DEV_BUS, | |
39 | NFIT_DEV_DIMM, | |
40 | NFIT_UUID_MAX, | |
41 | }; | |
42 | ||
43 | struct nfit_spa { | |
44 | struct acpi_nfit_system_address *spa; | |
45 | struct list_head list; | |
46 | }; | |
47 | ||
48 | struct nfit_dcr { | |
49 | struct acpi_nfit_control_region *dcr; | |
50 | struct list_head list; | |
51 | }; | |
52 | ||
53 | struct nfit_bdw { | |
54 | struct acpi_nfit_data_region *bdw; | |
55 | struct list_head list; | |
56 | }; | |
57 | ||
047fc8a1 RZ |
58 | struct nfit_idt { |
59 | struct acpi_nfit_interleave *idt; | |
60 | struct list_head list; | |
61 | }; | |
62 | ||
b94d5230 DW |
63 | struct nfit_memdev { |
64 | struct acpi_nfit_memory_map *memdev; | |
65 | struct list_head list; | |
66 | }; | |
67 | ||
68 | /* assembled tables for a given dimm/memory-device */ | |
69 | struct nfit_mem { | |
e6dfb2de | 70 | struct nvdimm *nvdimm; |
b94d5230 DW |
71 | struct acpi_nfit_memory_map *memdev_dcr; |
72 | struct acpi_nfit_memory_map *memdev_pmem; | |
047fc8a1 | 73 | struct acpi_nfit_memory_map *memdev_bdw; |
b94d5230 DW |
74 | struct acpi_nfit_control_region *dcr; |
75 | struct acpi_nfit_data_region *bdw; | |
76 | struct acpi_nfit_system_address *spa_dcr; | |
77 | struct acpi_nfit_system_address *spa_bdw; | |
047fc8a1 RZ |
78 | struct acpi_nfit_interleave *idt_dcr; |
79 | struct acpi_nfit_interleave *idt_bdw; | |
b94d5230 | 80 | struct list_head list; |
62232e45 DW |
81 | struct acpi_device *adev; |
82 | unsigned long dsm_mask; | |
b94d5230 DW |
83 | }; |
84 | ||
85 | struct acpi_nfit_desc { | |
86 | struct nvdimm_bus_descriptor nd_desc; | |
87 | struct acpi_table_nfit *nfit; | |
047fc8a1 RZ |
88 | struct mutex spa_map_mutex; |
89 | struct list_head spa_maps; | |
b94d5230 DW |
90 | struct list_head memdevs; |
91 | struct list_head dimms; | |
92 | struct list_head spas; | |
93 | struct list_head dcrs; | |
94 | struct list_head bdws; | |
047fc8a1 | 95 | struct list_head idts; |
b94d5230 DW |
96 | struct nvdimm_bus *nvdimm_bus; |
97 | struct device *dev; | |
62232e45 | 98 | unsigned long dimm_dsm_force_en; |
6bc75619 DW |
99 | int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa, |
100 | void *iobuf, u64 len, int rw); | |
b94d5230 DW |
101 | }; |
102 | ||
047fc8a1 RZ |
103 | enum nd_blk_mmio_selector { |
104 | BDW, | |
105 | DCR, | |
106 | }; | |
107 | ||
108 | struct nfit_blk { | |
109 | struct nfit_blk_mmio { | |
110 | union { | |
111 | void __iomem *base; | |
112 | void *aperture; | |
113 | }; | |
114 | u64 size; | |
115 | u64 base_offset; | |
116 | u32 line_size; | |
117 | u32 num_lines; | |
118 | u32 table_size; | |
119 | struct acpi_nfit_interleave *idt; | |
120 | struct acpi_nfit_system_address *spa; | |
121 | } mmio[2]; | |
122 | struct nd_region *nd_region; | |
123 | u64 bdw_offset; /* post interleave offset */ | |
124 | u64 stat_offset; | |
125 | u64 cmd_offset; | |
126 | }; | |
127 | ||
128 | struct nfit_spa_mapping { | |
129 | struct acpi_nfit_desc *acpi_desc; | |
130 | struct acpi_nfit_system_address *spa; | |
131 | struct list_head list; | |
132 | struct kref kref; | |
133 | void __iomem *iomem; | |
134 | }; | |
135 | ||
136 | static inline struct nfit_spa_mapping *to_spa_map(struct kref *kref) | |
137 | { | |
138 | return container_of(kref, struct nfit_spa_mapping, kref); | |
139 | } | |
140 | ||
b94d5230 DW |
141 | static inline struct acpi_nfit_memory_map *__to_nfit_memdev( |
142 | struct nfit_mem *nfit_mem) | |
143 | { | |
144 | if (nfit_mem->memdev_dcr) | |
145 | return nfit_mem->memdev_dcr; | |
146 | return nfit_mem->memdev_pmem; | |
147 | } | |
45def22c DW |
148 | |
149 | static inline struct acpi_nfit_desc *to_acpi_desc( | |
150 | struct nvdimm_bus_descriptor *nd_desc) | |
151 | { | |
152 | return container_of(nd_desc, struct acpi_nfit_desc, nd_desc); | |
153 | } | |
6bc75619 DW |
154 | |
155 | const u8 *to_nfit_uuid(enum nfit_uuids id); | |
156 | int acpi_nfit_init(struct acpi_nfit_desc *nfit, acpi_size sz); | |
157 | extern const struct attribute_group *acpi_nfit_attribute_groups[]; | |
b94d5230 | 158 | #endif /* __NFIT_H__ */ |