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 18 struct nd_cmd_smart { 19 __u32 status; 20 __u8 data[128]; 21 } __packed; 22 23 struct nd_cmd_smart_threshold { 24 __u32 status; 25 __u8 data[8]; 26 } __packed; 27 28 struct nd_cmd_dimm_flags { 29 __u32 status; 30 __u32 flags; 31 } __packed; 32 33 struct nd_cmd_get_config_size { 34 __u32 status; 35 __u32 config_size; 36 __u32 max_xfer; 37 } __packed; 38 39 struct 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 46 struct nd_cmd_set_config_hdr { 47 __u32 in_offset; 48 __u32 in_length; 49 __u8 in_buf[0]; 50 } __packed; 51 52 struct nd_cmd_vendor_hdr { 53 __u32 opcode; 54 __u32 in_length; 55 __u8 in_buf[0]; 56 } __packed; 57 58 struct nd_cmd_vendor_tail { 59 __u32 status; 60 __u32 out_length; 61 __u8 out_buf[0]; 62 } __packed; 63 64 struct nd_cmd_ars_cap { 65 __u64 address; 66 __u64 length; 67 __u32 status; 68 __u32 max_ars_out; 69 } __packed; 70 71 struct nd_cmd_ars_start { 72 __u64 address; 73 __u64 length; 74 __u16 type; 75 __u8 reserved[6]; 76 __u32 status; 77 } __packed; 78 79 struct nd_cmd_ars_status { 80 __u32 status; 81 __u32 out_length; 82 __u64 address; 83 __u64 length; 84 __u16 type; 85 __u32 num_records; 86 struct nd_ars_record { 87 __u32 handle; 88 __u32 flags; 89 __u64 err_address; 90 __u64 mask; 91 } __packed records[0]; 92 } __packed; 93 94 enum { 95 ND_CMD_IMPLEMENTED = 0, 96 97 /* bus commands */ 98 ND_CMD_ARS_CAP = 1, 99 ND_CMD_ARS_START = 2, 100 ND_CMD_ARS_STATUS = 3, 101 102 /* per-dimm commands */ 103 ND_CMD_SMART = 1, 104 ND_CMD_SMART_THRESHOLD = 2, 105 ND_CMD_DIMM_FLAGS = 3, 106 ND_CMD_GET_CONFIG_SIZE = 4, 107 ND_CMD_GET_CONFIG_DATA = 5, 108 ND_CMD_SET_CONFIG_DATA = 6, 109 ND_CMD_VENDOR_EFFECT_LOG_SIZE = 7, 110 ND_CMD_VENDOR_EFFECT_LOG = 8, 111 ND_CMD_VENDOR = 9, 112 }; 113 114 static inline const char *nvdimm_bus_cmd_name(unsigned cmd) 115 { 116 static const char * const names[] = { 117 [ND_CMD_ARS_CAP] = "ars_cap", 118 [ND_CMD_ARS_START] = "ars_start", 119 [ND_CMD_ARS_STATUS] = "ars_status", 120 }; 121 122 if (cmd < ARRAY_SIZE(names) && names[cmd]) 123 return names[cmd]; 124 return "unknown"; 125 } 126 127 static inline const char *nvdimm_cmd_name(unsigned cmd) 128 { 129 static const char * const names[] = { 130 [ND_CMD_SMART] = "smart", 131 [ND_CMD_SMART_THRESHOLD] = "smart_thresh", 132 [ND_CMD_DIMM_FLAGS] = "flags", 133 [ND_CMD_GET_CONFIG_SIZE] = "get_size", 134 [ND_CMD_GET_CONFIG_DATA] = "get_data", 135 [ND_CMD_SET_CONFIG_DATA] = "set_data", 136 [ND_CMD_VENDOR_EFFECT_LOG_SIZE] = "effect_size", 137 [ND_CMD_VENDOR_EFFECT_LOG] = "effect_log", 138 [ND_CMD_VENDOR] = "vendor", 139 }; 140 141 if (cmd < ARRAY_SIZE(names) && names[cmd]) 142 return names[cmd]; 143 return "unknown"; 144 } 145 146 #define ND_IOCTL 'N' 147 148 #define ND_IOCTL_SMART _IOWR(ND_IOCTL, ND_CMD_SMART,\ 149 struct nd_cmd_smart) 150 151 #define ND_IOCTL_SMART_THRESHOLD _IOWR(ND_IOCTL, ND_CMD_SMART_THRESHOLD,\ 152 struct nd_cmd_smart_threshold) 153 154 #define ND_IOCTL_DIMM_FLAGS _IOWR(ND_IOCTL, ND_CMD_DIMM_FLAGS,\ 155 struct nd_cmd_dimm_flags) 156 157 #define ND_IOCTL_GET_CONFIG_SIZE _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_SIZE,\ 158 struct nd_cmd_get_config_size) 159 160 #define ND_IOCTL_GET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_DATA,\ 161 struct nd_cmd_get_config_data_hdr) 162 163 #define ND_IOCTL_SET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_SET_CONFIG_DATA,\ 164 struct nd_cmd_set_config_hdr) 165 166 #define ND_IOCTL_VENDOR _IOWR(ND_IOCTL, ND_CMD_VENDOR,\ 167 struct nd_cmd_vendor_hdr) 168 169 #define ND_IOCTL_ARS_CAP _IOWR(ND_IOCTL, ND_CMD_ARS_CAP,\ 170 struct nd_cmd_ars_cap) 171 172 #define ND_IOCTL_ARS_START _IOWR(ND_IOCTL, ND_CMD_ARS_START,\ 173 struct nd_cmd_ars_start) 174 175 #define ND_IOCTL_ARS_STATUS _IOWR(ND_IOCTL, ND_CMD_ARS_STATUS,\ 176 struct nd_cmd_ars_status) 177 178 #define ND_DEVICE_DIMM 1 /* nd_dimm: container for "config data" */ 179 #define ND_DEVICE_REGION_PMEM 2 /* nd_region: (parent of PMEM namespaces) */ 180 #define ND_DEVICE_REGION_BLK 3 /* nd_region: (parent of BLK namespaces) */ 181 #define ND_DEVICE_NAMESPACE_IO 4 /* legacy persistent memory */ 182 #define ND_DEVICE_NAMESPACE_PMEM 5 /* PMEM namespace (may alias with BLK) */ 183 #define ND_DEVICE_NAMESPACE_BLK 6 /* BLK namespace (may alias with PMEM) */ 184 185 enum nd_driver_flags { 186 ND_DRIVER_DIMM = 1 << ND_DEVICE_DIMM, 187 ND_DRIVER_REGION_PMEM = 1 << ND_DEVICE_REGION_PMEM, 188 ND_DRIVER_REGION_BLK = 1 << ND_DEVICE_REGION_BLK, 189 ND_DRIVER_NAMESPACE_IO = 1 << ND_DEVICE_NAMESPACE_IO, 190 ND_DRIVER_NAMESPACE_PMEM = 1 << ND_DEVICE_NAMESPACE_PMEM, 191 ND_DRIVER_NAMESPACE_BLK = 1 << ND_DEVICE_NAMESPACE_BLK, 192 }; 193 194 enum { 195 ND_MIN_NAMESPACE_SIZE = 0x00400000, 196 }; 197 #endif /* __NDCTL_H__ */ 198