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15#ifndef __NFIT_H__
16#define __NFIT_H__
17#include <linux/workqueue.h>
18#include <linux/libnvdimm.h>
19#include <linux/ndctl.h>
20#include <linux/types.h>
21#include <linux/uuid.h>
22#include <linux/acpi.h>
23#include <acpi/acuuid.h>
24
25
26#define UUID_NFIT_BUS "2f10e7a4-9e91-11e4-89d3-123b93f75cba"
27
28
29#define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"
30
31
32#define UUID_NFIT_DIMM_N_HPE1 "9002c334-acf3-4c0e-9642-a235f0d53bc6"
33#define UUID_NFIT_DIMM_N_HPE2 "5008664b-b758-41a0-a03c-27c2f2d04f7e"
34
35
36#define UUID_NFIT_DIMM_N_MSFT "1ee68b36-d4bd-4a1a-9a16-4f8e53d46e05"
37
38#define ACPI_NFIT_MEM_FAILED_MASK (ACPI_NFIT_MEM_SAVE_FAILED \
39 | ACPI_NFIT_MEM_RESTORE_FAILED | ACPI_NFIT_MEM_FLUSH_FAILED \
40 | ACPI_NFIT_MEM_NOT_ARMED)
41
42enum nfit_uuids {
43
44 NFIT_DEV_DIMM = NVDIMM_FAMILY_INTEL,
45 NFIT_DEV_DIMM_N_HPE1 = NVDIMM_FAMILY_HPE1,
46 NFIT_DEV_DIMM_N_HPE2 = NVDIMM_FAMILY_HPE2,
47 NFIT_DEV_DIMM_N_MSFT = NVDIMM_FAMILY_MSFT,
48 NFIT_SPA_VOLATILE,
49 NFIT_SPA_PM,
50 NFIT_SPA_DCR,
51 NFIT_SPA_BDW,
52 NFIT_SPA_VDISK,
53 NFIT_SPA_VCD,
54 NFIT_SPA_PDISK,
55 NFIT_SPA_PCD,
56 NFIT_DEV_BUS,
57 NFIT_UUID_MAX,
58};
59
60
61
62
63
64#define NFIT_FIC_BYTE cpu_to_le16(0x101)
65#define NFIT_FIC_BLK cpu_to_le16(0x201)
66#define NFIT_FIC_BYTEN cpu_to_le16(0x301)
67
68enum {
69 NFIT_BLK_READ_FLUSH = 1,
70 NFIT_BLK_DCR_LATCH = 2,
71 NFIT_ARS_STATUS_DONE = 0,
72 NFIT_ARS_STATUS_BUSY = 1 << 16,
73 NFIT_ARS_STATUS_NONE = 2 << 16,
74 NFIT_ARS_STATUS_INTR = 3 << 16,
75 NFIT_ARS_START_BUSY = 6,
76 NFIT_ARS_CAP_NONE = 1,
77 NFIT_ARS_F_OVERFLOW = 1,
78 NFIT_ARS_TIMEOUT = 90,
79};
80
81struct nfit_spa {
82 struct list_head list;
83 struct nd_region *nd_region;
84 unsigned int ars_required:1;
85 u32 clear_err_unit;
86 u32 max_ars;
87 struct acpi_nfit_system_address spa[0];
88};
89
90struct nfit_dcr {
91 struct list_head list;
92 struct acpi_nfit_control_region dcr[0];
93};
94
95struct nfit_bdw {
96 struct list_head list;
97 struct acpi_nfit_data_region bdw[0];
98};
99
100struct nfit_idt {
101 struct list_head list;
102 struct acpi_nfit_interleave idt[0];
103};
104
105struct nfit_flush {
106 struct list_head list;
107 struct acpi_nfit_flush_address flush[0];
108};
109
110struct nfit_memdev {
111 struct list_head list;
112 struct acpi_nfit_memory_map memdev[0];
113};
114
115
116struct nfit_mem {
117 struct nvdimm *nvdimm;
118 struct acpi_nfit_memory_map *memdev_dcr;
119 struct acpi_nfit_memory_map *memdev_pmem;
120 struct acpi_nfit_memory_map *memdev_bdw;
121 struct acpi_nfit_control_region *dcr;
122 struct acpi_nfit_data_region *bdw;
123 struct acpi_nfit_system_address *spa_dcr;
124 struct acpi_nfit_system_address *spa_bdw;
125 struct acpi_nfit_interleave *idt_dcr;
126 struct acpi_nfit_interleave *idt_bdw;
127 struct nfit_flush *nfit_flush;
128 struct list_head list;
129 struct acpi_device *adev;
130 struct acpi_nfit_desc *acpi_desc;
131 struct resource *flush_wpq;
132 unsigned long dsm_mask;
133 int family;
134};
135
136struct acpi_nfit_desc {
137 struct nvdimm_bus_descriptor nd_desc;
138 struct acpi_table_header acpi_header;
139 struct mutex init_mutex;
140 struct list_head memdevs;
141 struct list_head flushes;
142 struct list_head dimms;
143 struct list_head spas;
144 struct list_head dcrs;
145 struct list_head bdws;
146 struct list_head idts;
147 struct nvdimm_bus *nvdimm_bus;
148 struct device *dev;
149 struct nd_cmd_ars_status *ars_status;
150 size_t ars_status_size;
151 struct work_struct work;
152 struct list_head list;
153 struct kernfs_node *scrub_count_state;
154 unsigned int scrub_count;
155 unsigned int cancel:1;
156 unsigned long dimm_cmd_force_en;
157 unsigned long bus_cmd_force_en;
158 int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
159 void *iobuf, u64 len, int rw);
160};
161
162enum nd_blk_mmio_selector {
163 BDW,
164 DCR,
165};
166
167struct nd_blk_addr {
168 union {
169 void __iomem *base;
170 void *aperture;
171 };
172};
173
174struct nfit_blk {
175 struct nfit_blk_mmio {
176 struct nd_blk_addr addr;
177 u64 size;
178 u64 base_offset;
179 u32 line_size;
180 u32 num_lines;
181 u32 table_size;
182 struct acpi_nfit_interleave *idt;
183 struct acpi_nfit_system_address *spa;
184 } mmio[2];
185 struct nd_region *nd_region;
186 u64 bdw_offset;
187 u64 stat_offset;
188 u64 cmd_offset;
189 u32 dimm_flags;
190};
191
192extern struct list_head acpi_descs;
193extern struct mutex acpi_desc_lock;
194int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc);
195
196#ifdef CONFIG_X86_MCE
197void nfit_mce_register(void);
198void nfit_mce_unregister(void);
199#else
200static inline void nfit_mce_register(void)
201{
202}
203static inline void nfit_mce_unregister(void)
204{
205}
206#endif
207
208int nfit_spa_type(struct acpi_nfit_system_address *spa);
209
210static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
211 struct nfit_mem *nfit_mem)
212{
213 if (nfit_mem->memdev_dcr)
214 return nfit_mem->memdev_dcr;
215 return nfit_mem->memdev_pmem;
216}
217
218static inline struct acpi_nfit_desc *to_acpi_desc(
219 struct nvdimm_bus_descriptor *nd_desc)
220{
221 return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
222}
223
224const u8 *to_nfit_uuid(enum nfit_uuids id);
225int acpi_nfit_init(struct acpi_nfit_desc *acpi_desc, void *nfit, acpi_size sz);
226void acpi_nfit_desc_init(struct acpi_nfit_desc *acpi_desc, struct device *dev);
227#endif
228
