nfit.h 7.9 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
/*
 * NVDIMM Firmware Interface Table - NFIT
 *
 * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */
#ifndef __NFIT_H__
#define __NFIT_H__
17
#include <linux/workqueue.h>
18
#include <linux/libnvdimm.h>
19
#include <linux/ndctl.h>
20 21 22 23
#include <linux/types.h>
#include <linux/acpi.h>
#include <acpi/acuuid.h>

24
/* ACPI 6.1 */
25
#define UUID_NFIT_BUS "2f10e7a4-9e91-11e4-89d3-123b93f75cba"
26

27
/* http://pmem.io/documents/NVDIMM_DSM_Interface-V1.6.pdf */
28
#define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"
29 30 31 32 33

/* https://github.com/HewlettPackard/hpe-nvm/blob/master/Documentation/ */
#define UUID_NFIT_DIMM_N_HPE1 "9002c334-acf3-4c0e-9642-a235f0d53bc6"
#define UUID_NFIT_DIMM_N_HPE2 "5008664b-b758-41a0-a03c-27c2f2d04f7e"

34 35 36
/* https://msdn.microsoft.com/library/windows/hardware/mt604741 */
#define UUID_NFIT_DIMM_N_MSFT "1ee68b36-d4bd-4a1a-9a16-4f8e53d46e05"

37 38
#define ACPI_NFIT_MEM_FAILED_MASK (ACPI_NFIT_MEM_SAVE_FAILED \
		| ACPI_NFIT_MEM_RESTORE_FAILED | ACPI_NFIT_MEM_FLUSH_FAILED \
39
		| ACPI_NFIT_MEM_NOT_ARMED | ACPI_NFIT_MEM_MAP_FAILED)
40

41 42
#define NVDIMM_FAMILY_MAX NVDIMM_FAMILY_MSFT

43 44 45 46 47 48
#define NVDIMM_STANDARD_CMDMASK \
(1 << ND_CMD_SMART | 1 << ND_CMD_SMART_THRESHOLD | 1 << ND_CMD_DIMM_FLAGS \
 | 1 << ND_CMD_GET_CONFIG_SIZE | 1 << ND_CMD_GET_CONFIG_DATA \
 | 1 << ND_CMD_SET_CONFIG_DATA | 1 << ND_CMD_VENDOR_EFFECT_LOG_SIZE \
 | 1 << ND_CMD_VENDOR_EFFECT_LOG | 1 << ND_CMD_VENDOR)

49 50 51 52 53
/*
 * Command numbers that the kernel needs to know about to handle
 * non-default DSM revision ids
 */
enum nvdimm_family_cmds {
54
	NVDIMM_INTEL_LATCH_SHUTDOWN = 10,
55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
	NVDIMM_INTEL_GET_MODES = 11,
	NVDIMM_INTEL_GET_FWINFO = 12,
	NVDIMM_INTEL_START_FWUPDATE = 13,
	NVDIMM_INTEL_SEND_FWUPDATE = 14,
	NVDIMM_INTEL_FINISH_FWUPDATE = 15,
	NVDIMM_INTEL_QUERY_FWUPDATE = 16,
	NVDIMM_INTEL_SET_THRESHOLD = 17,
	NVDIMM_INTEL_INJECT_ERROR = 18,
};

#define NVDIMM_INTEL_CMDMASK \
(NVDIMM_STANDARD_CMDMASK | 1 << NVDIMM_INTEL_GET_MODES \
 | 1 << NVDIMM_INTEL_GET_FWINFO | 1 << NVDIMM_INTEL_START_FWUPDATE \
 | 1 << NVDIMM_INTEL_SEND_FWUPDATE | 1 << NVDIMM_INTEL_FINISH_FWUPDATE \
 | 1 << NVDIMM_INTEL_QUERY_FWUPDATE | 1 << NVDIMM_INTEL_SET_THRESHOLD \
70
 | 1 << NVDIMM_INTEL_INJECT_ERROR | 1 << NVDIMM_INTEL_LATCH_SHUTDOWN)
71

72
enum nfit_uuids {
73 74 75 76
	/* for simplicity alias the uuid index with the family id */
	NFIT_DEV_DIMM = NVDIMM_FAMILY_INTEL,
	NFIT_DEV_DIMM_N_HPE1 = NVDIMM_FAMILY_HPE1,
	NFIT_DEV_DIMM_N_HPE2 = NVDIMM_FAMILY_HPE2,
77
	NFIT_DEV_DIMM_N_MSFT = NVDIMM_FAMILY_MSFT,
78 79 80 81 82 83 84 85 86 87 88 89
	NFIT_SPA_VOLATILE,
	NFIT_SPA_PM,
	NFIT_SPA_DCR,
	NFIT_SPA_BDW,
	NFIT_SPA_VDISK,
	NFIT_SPA_VCD,
	NFIT_SPA_PDISK,
	NFIT_SPA_PCD,
	NFIT_DEV_BUS,
	NFIT_UUID_MAX,
};

90
/*
91 92
 * Region format interface codes are stored with the interface as the
 * LSB and the function as the MSB.
93
 */
94 95 96
#define NFIT_FIC_BYTE cpu_to_le16(0x101) /* byte-addressable energy backed */
#define NFIT_FIC_BLK cpu_to_le16(0x201) /* block-addressable non-energy backed */
#define NFIT_FIC_BYTEN cpu_to_le16(0x301) /* byte-addressable non-energy backed */
97

98
enum {
99 100 101 102 103 104 105 106 107
	NFIT_BLK_READ_FLUSH = 1,
	NFIT_BLK_DCR_LATCH = 2,
	NFIT_ARS_STATUS_DONE = 0,
	NFIT_ARS_STATUS_BUSY = 1 << 16,
	NFIT_ARS_STATUS_NONE = 2 << 16,
	NFIT_ARS_STATUS_INTR = 3 << 16,
	NFIT_ARS_START_BUSY = 6,
	NFIT_ARS_CAP_NONE = 1,
	NFIT_ARS_F_OVERFLOW = 1,
108
	NFIT_ARS_TIMEOUT = 90,
109 110
};

111 112
enum nfit_root_notifiers {
	NFIT_NOTIFY_UPDATE = 0x80,
113
	NFIT_NOTIFY_UC_MEMORY_ERROR = 0x81,
114 115
};

116 117 118 119
enum nfit_dimm_notifiers {
	NFIT_NOTIFY_DIMM_HEALTH = 0x81,
};

120
enum nfit_ars_state {
121 122
	ARS_REQ_SHORT,
	ARS_REQ_LONG,
123 124 125
	ARS_FAILED,
};

126 127
struct nfit_spa {
	struct list_head list;
128
	struct nd_region *nd_region;
129
	unsigned long ars_state;
130 131
	u32 clear_err_unit;
	u32 max_ars;
132
	struct acpi_nfit_system_address spa[0];
133 134 135 136
};

struct nfit_dcr {
	struct list_head list;
137
	struct acpi_nfit_control_region dcr[0];
138 139 140 141
};

struct nfit_bdw {
	struct list_head list;
142
	struct acpi_nfit_data_region bdw[0];
143 144
};

145 146
struct nfit_idt {
	struct list_head list;
147
	struct acpi_nfit_interleave idt[0];
148 149
};

150 151
struct nfit_flush {
	struct list_head list;
152
	struct acpi_nfit_flush_address flush[0];
153 154
};

155 156
struct nfit_memdev {
	struct list_head list;
157
	struct acpi_nfit_memory_map memdev[0];
158 159 160 161
};

/* assembled tables for a given dimm/memory-device */
struct nfit_mem {
162
	struct nvdimm *nvdimm;
163 164
	struct acpi_nfit_memory_map *memdev_dcr;
	struct acpi_nfit_memory_map *memdev_pmem;
165
	struct acpi_nfit_memory_map *memdev_bdw;
166 167 168 169
	struct acpi_nfit_control_region *dcr;
	struct acpi_nfit_data_region *bdw;
	struct acpi_nfit_system_address *spa_dcr;
	struct acpi_nfit_system_address *spa_bdw;
170 171
	struct acpi_nfit_interleave *idt_dcr;
	struct acpi_nfit_interleave *idt_bdw;
172
	struct kernfs_node *flags_attr;
173
	struct nfit_flush *nfit_flush;
174
	struct list_head list;
175
	struct acpi_device *adev;
176
	struct acpi_nfit_desc *acpi_desc;
177
	struct resource *flush_wpq;
178
	unsigned long dsm_mask;
179
	int family;
180 181
	bool has_lsr;
	bool has_lsw;
182 183
};

D
Dan Williams 已提交
184 185 186
enum scrub_flags {
	ARS_BUSY,
	ARS_CANCEL,
D
Dan Williams 已提交
187
	ARS_VALID,
188
	ARS_POLL,
D
Dan Williams 已提交
189 190
};

191 192
struct acpi_nfit_desc {
	struct nvdimm_bus_descriptor nd_desc;
193
	struct acpi_table_header acpi_header;
V
Vishal Verma 已提交
194
	struct mutex init_mutex;
195
	struct list_head memdevs;
196
	struct list_head flushes;
197 198 199 200
	struct list_head dimms;
	struct list_head spas;
	struct list_head dcrs;
	struct list_head bdws;
201
	struct list_head idts;
202 203
	struct nvdimm_bus *nvdimm_bus;
	struct device *dev;
204
	struct nd_cmd_ars_status *ars_status;
205
	struct nfit_spa *scrub_spa;
206
	struct delayed_work dwork;
207
	struct list_head list;
208
	struct kernfs_node *scrub_count_state;
209
	unsigned int max_ars;
210
	unsigned int scrub_count;
211
	unsigned int scrub_mode;
D
Dan Williams 已提交
212
	unsigned long scrub_flags;
213 214
	unsigned long dimm_cmd_force_en;
	unsigned long bus_cmd_force_en;
215
	unsigned long bus_nfit_cmd_force_en;
216
	unsigned int platform_cap;
217
	unsigned int scrub_tmo;
218 219
	int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
			void *iobuf, u64 len, int rw);
220 221
};

222 223 224 225 226
enum scrub_mode {
	HW_ERROR_SCRUB_OFF,
	HW_ERROR_SCRUB_ON,
};

227 228 229 230 231
enum nd_blk_mmio_selector {
	BDW,
	DCR,
};

232 233 234
struct nd_blk_addr {
	union {
		void __iomem *base;
D
Dan Williams 已提交
235
		void *aperture;
236 237 238
	};
};

239 240
struct nfit_blk {
	struct nfit_blk_mmio {
241
		struct nd_blk_addr addr;
242 243 244 245 246 247 248 249 250 251 252 253
		u64 size;
		u64 base_offset;
		u32 line_size;
		u32 num_lines;
		u32 table_size;
		struct acpi_nfit_interleave *idt;
		struct acpi_nfit_system_address *spa;
	} mmio[2];
	struct nd_region *nd_region;
	u64 bdw_offset; /* post interleave offset */
	u64 stat_offset;
	u64 cmd_offset;
254
	u32 dimm_flags;
255 256
};

257 258
extern struct list_head acpi_descs;
extern struct mutex acpi_desc_lock;
259 260
int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc,
		enum nfit_ars_state req_type);
261

262 263 264 265 266
#ifdef CONFIG_X86_MCE
void nfit_mce_register(void);
void nfit_mce_unregister(void);
#else
static inline void nfit_mce_register(void)
267 268
{
}
269 270 271 272 273 274
static inline void nfit_mce_unregister(void)
{
}
#endif

int nfit_spa_type(struct acpi_nfit_system_address *spa);
275

276 277 278 279 280 281 282
static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
		struct nfit_mem *nfit_mem)
{
	if (nfit_mem->memdev_dcr)
		return nfit_mem->memdev_dcr;
	return nfit_mem->memdev_pmem;
}
283 284 285 286 287 288

static inline struct acpi_nfit_desc *to_acpi_desc(
		struct nvdimm_bus_descriptor *nd_desc)
{
	return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
}
289

290
const guid_t *to_nfit_uuid(enum nfit_uuids id);
291
int acpi_nfit_init(struct acpi_nfit_desc *acpi_desc, void *nfit, acpi_size sz);
292
void acpi_nfit_shutdown(void *data);
293
void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event);
294
void __acpi_nvdimm_notify(struct device *dev, u32 event);
295 296
int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
		unsigned int cmd, void *buf, unsigned int buf_len, int *cmd_rc);
297
void acpi_nfit_desc_init(struct acpi_nfit_desc *acpi_desc, struct device *dev);
298
#endif /* __NFIT_H__ */