Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1/*
2 * Copyright (c) 2014-2015, 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
23struct nd_cmd_smart_threshold {
24 __u32 status;
25 __u8 data[8];
26} __packed;
27
28struct nd_cmd_dimm_flags {
29 __u32 status;
30 __u32 flags;
31} __packed;
32
33struct nd_cmd_get_config_size {
34 __u32 status;
35 __u32 config_size;
36 __u32 max_xfer;
37} __packed;
38
39struct nd_cmd_get_config_data_hdr {
40 __u32 in_offset;
41 __u32 in_length;
42 __u32 status;
43 __u8 out_buf[0];
44} __packed;
45
46struct nd_cmd_set_config_hdr {
47 __u32 in_offset;
48 __u32 in_length;
49 __u8 in_buf[0];
50} __packed;
51
52struct nd_cmd_vendor_hdr {
53 __u32 opcode;
54 __u32 in_length;
55 __u8 in_buf[0];
56} __packed;
57
58struct nd_cmd_vendor_tail {
59 __u32 status;
60 __u32 out_length;
61 __u8 out_buf[0];
62} __packed;
63
64struct nd_cmd_ars_cap {
65 __u64 address;
66 __u64 length;
67 __u32 status;
68 __u32 max_ars_out;
69 __u32 clear_err_unit;
70 __u32 reserved;
71} __packed;
72
73struct nd_cmd_ars_start {
74 __u64 address;
75 __u64 length;
76 __u16 type;
77 __u8 flags;
78 __u8 reserved[5];
79 __u32 status;
80 __u32 scrub_time;
81} __packed;
82
83struct nd_cmd_ars_status {
84 __u32 status;
85 __u32 out_length;
86 __u64 address;
87 __u64 length;
88 __u64 restart_address;
89 __u64 restart_length;
90 __u16 type;
91 __u16 flags;
92 __u32 num_records;
93 struct nd_ars_record {
94 __u32 handle;
95 __u32 reserved;
96 __u64 err_address;
97 __u64 length;
98 } __packed records[0];
99} __packed;
100
101enum {
102 ND_CMD_IMPLEMENTED = 0,
103
104 /* bus commands */
105 ND_CMD_ARS_CAP = 1,
106 ND_CMD_ARS_START = 2,
107 ND_CMD_ARS_STATUS = 3,
108
109 /* per-dimm commands */
110 ND_CMD_SMART = 1,
111 ND_CMD_SMART_THRESHOLD = 2,
112 ND_CMD_DIMM_FLAGS = 3,
113 ND_CMD_GET_CONFIG_SIZE = 4,
114 ND_CMD_GET_CONFIG_DATA = 5,
115 ND_CMD_SET_CONFIG_DATA = 6,
116 ND_CMD_VENDOR_EFFECT_LOG_SIZE = 7,
117 ND_CMD_VENDOR_EFFECT_LOG = 8,
118 ND_CMD_VENDOR = 9,
119};
120
121enum {
122 ND_ARS_VOLATILE = 1,
123 ND_ARS_PERSISTENT = 2,
124};
125
126static inline const char *nvdimm_bus_cmd_name(unsigned cmd)
127{
128 static const char * const names[] = {
129 [ND_CMD_ARS_CAP] = "ars_cap",
130 [ND_CMD_ARS_START] = "ars_start",
131 [ND_CMD_ARS_STATUS] = "ars_status",
132 };
133
134 if (cmd < ARRAY_SIZE(names) && names[cmd])
135 return names[cmd];
136 return "unknown";
137}
138
139static inline const char *nvdimm_cmd_name(unsigned cmd)
140{
141 static const char * const names[] = {
142 [ND_CMD_SMART] = "smart",
143 [ND_CMD_SMART_THRESHOLD] = "smart_thresh",
144 [ND_CMD_DIMM_FLAGS] = "flags",
145 [ND_CMD_GET_CONFIG_SIZE] = "get_size",
146 [ND_CMD_GET_CONFIG_DATA] = "get_data",
147 [ND_CMD_SET_CONFIG_DATA] = "set_data",
148 [ND_CMD_VENDOR_EFFECT_LOG_SIZE] = "effect_size",
149 [ND_CMD_VENDOR_EFFECT_LOG] = "effect_log",
150 [ND_CMD_VENDOR] = "vendor",
151 };
152
153 if (cmd < ARRAY_SIZE(names) && names[cmd])
154 return names[cmd];
155 return "unknown";
156}
157
158#define ND_IOCTL 'N'
159
160#define ND_IOCTL_SMART _IOWR(ND_IOCTL, ND_CMD_SMART,\
161 struct nd_cmd_smart)
162
163#define ND_IOCTL_SMART_THRESHOLD _IOWR(ND_IOCTL, ND_CMD_SMART_THRESHOLD,\
164 struct nd_cmd_smart_threshold)
165
166#define ND_IOCTL_DIMM_FLAGS _IOWR(ND_IOCTL, ND_CMD_DIMM_FLAGS,\
167 struct nd_cmd_dimm_flags)
168
169#define ND_IOCTL_GET_CONFIG_SIZE _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_SIZE,\
170 struct nd_cmd_get_config_size)
171
172#define ND_IOCTL_GET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_DATA,\
173 struct nd_cmd_get_config_data_hdr)
174
175#define ND_IOCTL_SET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_SET_CONFIG_DATA,\
176 struct nd_cmd_set_config_hdr)
177
178#define ND_IOCTL_VENDOR _IOWR(ND_IOCTL, ND_CMD_VENDOR,\
179 struct nd_cmd_vendor_hdr)
180
181#define ND_IOCTL_ARS_CAP _IOWR(ND_IOCTL, ND_CMD_ARS_CAP,\
182 struct nd_cmd_ars_cap)
183
184#define ND_IOCTL_ARS_START _IOWR(ND_IOCTL, ND_CMD_ARS_START,\
185 struct nd_cmd_ars_start)
186
187#define ND_IOCTL_ARS_STATUS _IOWR(ND_IOCTL, ND_CMD_ARS_STATUS,\
188 struct nd_cmd_ars_status)
189
190#define ND_DEVICE_DIMM 1 /* nd_dimm: container for "config data" */
191#define ND_DEVICE_REGION_PMEM 2 /* nd_region: (parent of PMEM namespaces) */
192#define ND_DEVICE_REGION_BLK 3 /* nd_region: (parent of BLK namespaces) */
193#define ND_DEVICE_NAMESPACE_IO 4 /* legacy persistent memory */
194#define ND_DEVICE_NAMESPACE_PMEM 5 /* PMEM namespace (may alias with BLK) */
195#define ND_DEVICE_NAMESPACE_BLK 6 /* BLK namespace (may alias with PMEM) */
196
197enum nd_driver_flags {
198 ND_DRIVER_DIMM = 1 << ND_DEVICE_DIMM,
199 ND_DRIVER_REGION_PMEM = 1 << ND_DEVICE_REGION_PMEM,
200 ND_DRIVER_REGION_BLK = 1 << ND_DEVICE_REGION_BLK,
201 ND_DRIVER_NAMESPACE_IO = 1 << ND_DEVICE_NAMESPACE_IO,
202 ND_DRIVER_NAMESPACE_PMEM = 1 << ND_DEVICE_NAMESPACE_PMEM,
203 ND_DRIVER_NAMESPACE_BLK = 1 << ND_DEVICE_NAMESPACE_BLK,
204};
205
206enum {
207 ND_MIN_NAMESPACE_SIZE = 0x00400000,
208};
209
210enum ars_masks {
211 ARS_STATUS_MASK = 0x0000FFFF,
212 ARS_EXT_STATUS_SHIFT = 16,
213};
214#endif /* __NDCTL_H__ */