Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * Copyright (c) 2014-2016, Intel Corporation.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU Lesser General Public License,
6 * version 2.1, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT ANY
9 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
10 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
11 * more details.
12 */
13#ifndef __NDCTL_H__
14#define __NDCTL_H__
15
16#include <linux/types.h>
17
18struct nd_cmd_smart {
19 __u32 status;
20 __u8 data[128];
21} __packed;
22
23#define ND_SMART_HEALTH_VALID (1 << 0)
24#define ND_SMART_SPARES_VALID (1 << 1)
25#define ND_SMART_USED_VALID (1 << 2)
26#define ND_SMART_TEMP_VALID (1 << 3)
27#define ND_SMART_CTEMP_VALID (1 << 4)
28#define ND_SMART_ALARM_VALID (1 << 9)
29#define ND_SMART_SHUTDOWN_VALID (1 << 10)
30#define ND_SMART_VENDOR_VALID (1 << 11)
31#define ND_SMART_SPARE_TRIP (1 << 0)
32#define ND_SMART_TEMP_TRIP (1 << 1)
33#define ND_SMART_CTEMP_TRIP (1 << 2)
34#define ND_SMART_NON_CRITICAL_HEALTH (1 << 0)
35#define ND_SMART_CRITICAL_HEALTH (1 << 1)
36#define ND_SMART_FATAL_HEALTH (1 << 2)
37
38struct nd_smart_payload {
39 __u32 flags;
40 __u8 reserved0[4];
41 __u8 health;
42 __u8 spares;
43 __u8 life_used;
44 __u8 alarm_flags;
45 __u16 temperature;
46 __u16 ctrl_temperature;
47 __u8 reserved1[15];
48 __u8 shutdown_state;
49 __u32 vendor_size;
50 __u8 vendor_data[92];
51} __packed;
52
53struct nd_cmd_smart_threshold {
54 __u32 status;
55 __u8 data[8];
56} __packed;
57
58struct nd_smart_threshold_payload {
59 __u8 alarm_control;
60 __u8 reserved0;
61 __u16 temperature;
62 __u8 spares;
63 __u8 reserved[3];
64} __packed;
65
66struct nd_cmd_dimm_flags {
67 __u32 status;
68 __u32 flags;
69} __packed;
70
71struct nd_cmd_get_config_size {
72 __u32 status;
73 __u32 config_size;
74 __u32 max_xfer;
75} __packed;
76
77struct nd_cmd_get_config_data_hdr {
78 __u32 in_offset;
79 __u32 in_length;
80 __u32 status;
81 __u8 out_buf[0];
82} __packed;
83
84struct nd_cmd_set_config_hdr {
85 __u32 in_offset;
86 __u32 in_length;
87 __u8 in_buf[0];
88} __packed;
89
90struct nd_cmd_vendor_hdr {
91 __u32 opcode;
92 __u32 in_length;
93 __u8 in_buf[0];
94} __packed;
95
96struct nd_cmd_vendor_tail {
97 __u32 status;
98 __u32 out_length;
99 __u8 out_buf[0];
100} __packed;
101
102struct nd_cmd_ars_cap {
103 __u64 address;
104 __u64 length;
105 __u32 status;
106 __u32 max_ars_out;
107 __u32 clear_err_unit;
108 __u16 flags;
109 __u16 reserved;
110} __packed;
111
112struct nd_cmd_ars_start {
113 __u64 address;
114 __u64 length;
115 __u16 type;
116 __u8 flags;
117 __u8 reserved[5];
118 __u32 status;
119 __u32 scrub_time;
120} __packed;
121
122struct nd_cmd_ars_status {
123 __u32 status;
124 __u32 out_length;
125 __u64 address;
126 __u64 length;
127 __u64 restart_address;
128 __u64 restart_length;
129 __u16 type;
130 __u16 flags;
131 __u32 num_records;
132 struct nd_ars_record {
133 __u32 handle;
134 __u32 reserved;
135 __u64 err_address;
136 __u64 length;
137 } __packed records[0];
138} __packed;
139
140struct nd_cmd_clear_error {
141 __u64 address;
142 __u64 length;
143 __u32 status;
144 __u8 reserved[4];
145 __u64 cleared;
146} __packed;
147
148enum {
149 ND_CMD_IMPLEMENTED = 0,
150
151 /* bus commands */
152 ND_CMD_ARS_CAP = 1,
153 ND_CMD_ARS_START = 2,
154 ND_CMD_ARS_STATUS = 3,
155 ND_CMD_CLEAR_ERROR = 4,
156
157 /* per-dimm commands */
158 ND_CMD_SMART = 1,
159 ND_CMD_SMART_THRESHOLD = 2,
160 ND_CMD_DIMM_FLAGS = 3,
161 ND_CMD_GET_CONFIG_SIZE = 4,
162 ND_CMD_GET_CONFIG_DATA = 5,
163 ND_CMD_SET_CONFIG_DATA = 6,
164 ND_CMD_VENDOR_EFFECT_LOG_SIZE = 7,
165 ND_CMD_VENDOR_EFFECT_LOG = 8,
166 ND_CMD_VENDOR = 9,
167 ND_CMD_CALL = 10,
168};
169
170enum {
171 ND_ARS_VOLATILE = 1,
172 ND_ARS_PERSISTENT = 2,
173 ND_ARS_RETURN_PREV_DATA = 1 << 1,
174 ND_CONFIG_LOCKED = 1,
175};
176
177static inline const char *nvdimm_bus_cmd_name(unsigned cmd)
178{
179 static const char * const names[] = {
180 [ND_CMD_ARS_CAP] = "ars_cap",
181 [ND_CMD_ARS_START] = "ars_start",
182 [ND_CMD_ARS_STATUS] = "ars_status",
183 [ND_CMD_CLEAR_ERROR] = "clear_error",
184 [ND_CMD_CALL] = "cmd_call",
185 };
186
187 if (cmd < ARRAY_SIZE(names) && names[cmd])
188 return names[cmd];
189 return "unknown";
190}
191
192static inline const char *nvdimm_cmd_name(unsigned cmd)
193{
194 static const char * const names[] = {
195 [ND_CMD_SMART] = "smart",
196 [ND_CMD_SMART_THRESHOLD] = "smart_thresh",
197 [ND_CMD_DIMM_FLAGS] = "flags",
198 [ND_CMD_GET_CONFIG_SIZE] = "get_size",
199 [ND_CMD_GET_CONFIG_DATA] = "get_data",
200 [ND_CMD_SET_CONFIG_DATA] = "set_data",
201 [ND_CMD_VENDOR_EFFECT_LOG_SIZE] = "effect_size",
202 [ND_CMD_VENDOR_EFFECT_LOG] = "effect_log",
203 [ND_CMD_VENDOR] = "vendor",
204 [ND_CMD_CALL] = "cmd_call",
205 };
206
207 if (cmd < ARRAY_SIZE(names) && names[cmd])
208 return names[cmd];
209 return "unknown";
210}
211
212#define ND_IOCTL 'N'
213
214#define ND_IOCTL_SMART _IOWR(ND_IOCTL, ND_CMD_SMART,\
215 struct nd_cmd_smart)
216
217#define ND_IOCTL_SMART_THRESHOLD _IOWR(ND_IOCTL, ND_CMD_SMART_THRESHOLD,\
218 struct nd_cmd_smart_threshold)
219
220#define ND_IOCTL_DIMM_FLAGS _IOWR(ND_IOCTL, ND_CMD_DIMM_FLAGS,\
221 struct nd_cmd_dimm_flags)
222
223#define ND_IOCTL_GET_CONFIG_SIZE _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_SIZE,\
224 struct nd_cmd_get_config_size)
225
226#define ND_IOCTL_GET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_DATA,\
227 struct nd_cmd_get_config_data_hdr)
228
229#define ND_IOCTL_SET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_SET_CONFIG_DATA,\
230 struct nd_cmd_set_config_hdr)
231
232#define ND_IOCTL_VENDOR _IOWR(ND_IOCTL, ND_CMD_VENDOR,\
233 struct nd_cmd_vendor_hdr)
234
235#define ND_IOCTL_ARS_CAP _IOWR(ND_IOCTL, ND_CMD_ARS_CAP,\
236 struct nd_cmd_ars_cap)
237
238#define ND_IOCTL_ARS_START _IOWR(ND_IOCTL, ND_CMD_ARS_START,\
239 struct nd_cmd_ars_start)
240
241#define ND_IOCTL_ARS_STATUS _IOWR(ND_IOCTL, ND_CMD_ARS_STATUS,\
242 struct nd_cmd_ars_status)
243
244#define ND_IOCTL_CLEAR_ERROR _IOWR(ND_IOCTL, ND_CMD_CLEAR_ERROR,\
245 struct nd_cmd_clear_error)
246
247#define ND_DEVICE_DIMM 1 /* nd_dimm: container for "config data" */
248#define ND_DEVICE_REGION_PMEM 2 /* nd_region: (parent of PMEM namespaces) */
249#define ND_DEVICE_REGION_BLK 3 /* nd_region: (parent of BLK namespaces) */
250#define ND_DEVICE_NAMESPACE_IO 4 /* legacy persistent memory */
251#define ND_DEVICE_NAMESPACE_PMEM 5 /* PMEM namespace (may alias with BLK) */
252#define ND_DEVICE_NAMESPACE_BLK 6 /* BLK namespace (may alias with PMEM) */
253#define ND_DEVICE_DAX_PMEM 7 /* Device DAX interface to pmem */
254
255enum nd_driver_flags {
256 ND_DRIVER_DIMM = 1 << ND_DEVICE_DIMM,
257 ND_DRIVER_REGION_PMEM = 1 << ND_DEVICE_REGION_PMEM,
258 ND_DRIVER_REGION_BLK = 1 << ND_DEVICE_REGION_BLK,
259 ND_DRIVER_NAMESPACE_IO = 1 << ND_DEVICE_NAMESPACE_IO,
260 ND_DRIVER_NAMESPACE_PMEM = 1 << ND_DEVICE_NAMESPACE_PMEM,
261 ND_DRIVER_NAMESPACE_BLK = 1 << ND_DEVICE_NAMESPACE_BLK,
262 ND_DRIVER_DAX_PMEM = 1 << ND_DEVICE_DAX_PMEM,
263};
264
265enum {
266 ND_MIN_NAMESPACE_SIZE = 0x00400000,
267};
268
269enum ars_masks {
270 ARS_STATUS_MASK = 0x0000FFFF,
271 ARS_EXT_STATUS_SHIFT = 16,
272};
273
274/*
275 * struct nd_cmd_pkg
276 *
277 * is a wrapper to a quasi pass thru interface for invoking firmware
278 * associated with nvdimms.
279 *
280 * INPUT PARAMETERS
281 *
282 * nd_family corresponds to the firmware (e.g. DSM) interface.
283 *
284 * nd_command are the function index advertised by the firmware.
285 *
286 * nd_size_in is the size of the input parameters being passed to firmware
287 *
288 * OUTPUT PARAMETERS
289 *
290 * nd_fw_size is the size of the data firmware wants to return for
291 * the call. If nd_fw_size is greater than size of nd_size_out, only
292 * the first nd_size_out bytes are returned.
293 */
294
295struct nd_cmd_pkg {
296 __u64 nd_family; /* family of commands */
297 __u64 nd_command;
298 __u32 nd_size_in; /* INPUT: size of input args */
299 __u32 nd_size_out; /* INPUT: size of payload */
300 __u32 nd_reserved2[9]; /* reserved must be zero */
301 __u32 nd_fw_size; /* OUTPUT: size fw wants to return */
302 unsigned char nd_payload[]; /* Contents of call */
303};
304
305/* These NVDIMM families represent pre-standardization command sets */
306#define NVDIMM_FAMILY_INTEL 0
307#define NVDIMM_FAMILY_HPE1 1
308#define NVDIMM_FAMILY_HPE2 2
309#define NVDIMM_FAMILY_MSFT 3
310
311#define ND_IOCTL_CALL _IOWR(ND_IOCTL, ND_CMD_CALL,\
312 struct nd_cmd_pkg)
313
314#endif /* __NDCTL_H__ */