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_dimm_flags { 19 __u32 status; 20 __u32 flags; 21} __packed; 22 23struct nd_cmd_get_config_size { 24 __u32 status; 25 __u32 config_size; 26 __u32 max_xfer; 27} __packed; 28 29struct nd_cmd_get_config_data_hdr { 30 __u32 in_offset; 31 __u32 in_length; 32 __u32 status; 33 __u8 out_buf[]; 34} __packed; 35 36struct nd_cmd_set_config_hdr { 37 __u32 in_offset; 38 __u32 in_length; 39 __u8 in_buf[]; 40} __packed; 41 42struct nd_cmd_vendor_hdr { 43 __u32 opcode; 44 __u32 in_length; 45 __u8 in_buf[]; 46} __packed; 47 48struct nd_cmd_vendor_tail { 49 __u32 status; 50 __u32 out_length; 51 __u8 out_buf[]; 52} __packed; 53 54struct nd_cmd_ars_cap { 55 __u64 address; 56 __u64 length; 57 __u32 status; 58 __u32 max_ars_out; 59 __u32 clear_err_unit; 60 __u16 flags; 61 __u16 reserved; 62} __packed; 63 64struct nd_cmd_ars_start { 65 __u64 address; 66 __u64 length; 67 __u16 type; 68 __u8 flags; 69 __u8 reserved[5]; 70 __u32 status; 71 __u32 scrub_time; 72} __packed; 73 74struct nd_cmd_ars_status { 75 __u32 status; 76 __u32 out_length; 77 __u64 address; 78 __u64 length; 79 __u64 restart_address; 80 __u64 restart_length; 81 __u16 type; 82 __u16 flags; 83 __u32 num_records; 84 struct nd_ars_record { 85 __u32 handle; 86 __u32 reserved; 87 __u64 err_address; 88 __u64 length; 89 } __packed records[]; 90} __packed; 91 92struct nd_cmd_clear_error { 93 __u64 address; 94 __u64 length; 95 __u32 status; 96 __u8 reserved[4]; 97 __u64 cleared; 98} __packed; 99 100enum { 101 ND_CMD_IMPLEMENTED = 0, 102 103 /* bus commands */ 104 ND_CMD_ARS_CAP = 1, 105 ND_CMD_ARS_START = 2, 106 ND_CMD_ARS_STATUS = 3, 107 ND_CMD_CLEAR_ERROR = 4, 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 ND_CMD_CALL = 10, 120}; 121 122enum { 123 ND_ARS_VOLATILE = 1, 124 ND_ARS_PERSISTENT = 2, 125 ND_ARS_RETURN_PREV_DATA = 1 << 1, 126 ND_CONFIG_LOCKED = 1, 127}; 128 129static inline const char *nvdimm_bus_cmd_name(unsigned cmd) 130{ 131 switch (cmd) { 132 case ND_CMD_ARS_CAP: return "ars_cap"; 133 case ND_CMD_ARS_START: return "ars_start"; 134 case ND_CMD_ARS_STATUS: return "ars_status"; 135 case ND_CMD_CLEAR_ERROR: return "clear_error"; 136 case ND_CMD_CALL: return "cmd_call"; 137 default: return "unknown"; 138 } 139} 140 141static inline const char *nvdimm_cmd_name(unsigned cmd) 142{ 143 switch (cmd) { 144 case ND_CMD_SMART: return "smart"; 145 case ND_CMD_SMART_THRESHOLD: return "smart_thresh"; 146 case ND_CMD_DIMM_FLAGS: return "flags"; 147 case ND_CMD_GET_CONFIG_SIZE: return "get_size"; 148 case ND_CMD_GET_CONFIG_DATA: return "get_data"; 149 case ND_CMD_SET_CONFIG_DATA: return "set_data"; 150 case ND_CMD_VENDOR_EFFECT_LOG_SIZE: return "effect_size"; 151 case ND_CMD_VENDOR_EFFECT_LOG: return "effect_log"; 152 case ND_CMD_VENDOR: return "vendor"; 153 case ND_CMD_CALL: return "cmd_call"; 154 default: return "unknown"; 155 } 156} 157 158#define ND_IOCTL 'N' 159 160#define ND_IOCTL_DIMM_FLAGS _IOWR(ND_IOCTL, ND_CMD_DIMM_FLAGS,\ 161 struct nd_cmd_dimm_flags) 162 163#define ND_IOCTL_GET_CONFIG_SIZE _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_SIZE,\ 164 struct nd_cmd_get_config_size) 165 166#define ND_IOCTL_GET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_DATA,\ 167 struct nd_cmd_get_config_data_hdr) 168 169#define ND_IOCTL_SET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_SET_CONFIG_DATA,\ 170 struct nd_cmd_set_config_hdr) 171 172#define ND_IOCTL_VENDOR _IOWR(ND_IOCTL, ND_CMD_VENDOR,\ 173 struct nd_cmd_vendor_hdr) 174 175#define ND_IOCTL_ARS_CAP _IOWR(ND_IOCTL, ND_CMD_ARS_CAP,\ 176 struct nd_cmd_ars_cap) 177 178#define ND_IOCTL_ARS_START _IOWR(ND_IOCTL, ND_CMD_ARS_START,\ 179 struct nd_cmd_ars_start) 180 181#define ND_IOCTL_ARS_STATUS _IOWR(ND_IOCTL, ND_CMD_ARS_STATUS,\ 182 struct nd_cmd_ars_status) 183 184#define ND_IOCTL_CLEAR_ERROR _IOWR(ND_IOCTL, ND_CMD_CLEAR_ERROR,\ 185 struct nd_cmd_clear_error) 186 187#define ND_DEVICE_DIMM 1 /* nd_dimm: container for "config data" */ 188#define ND_DEVICE_REGION_PMEM 2 /* nd_region: (parent of PMEM namespaces) */ 189#define ND_DEVICE_REGION_BLK 3 /* nd_region: (parent of BLK namespaces) */ 190#define ND_DEVICE_NAMESPACE_IO 4 /* legacy persistent memory */ 191#define ND_DEVICE_NAMESPACE_PMEM 5 /* PMEM namespace (may alias with BLK) */ 192#define ND_DEVICE_DAX_PMEM 7 /* Device DAX interface to pmem */ 193 194enum nd_driver_flags { 195 ND_DRIVER_DIMM = 1 << ND_DEVICE_DIMM, 196 ND_DRIVER_REGION_PMEM = 1 << ND_DEVICE_REGION_PMEM, 197 ND_DRIVER_REGION_BLK = 1 << ND_DEVICE_REGION_BLK, 198 ND_DRIVER_NAMESPACE_IO = 1 << ND_DEVICE_NAMESPACE_IO, 199 ND_DRIVER_NAMESPACE_PMEM = 1 << ND_DEVICE_NAMESPACE_PMEM, 200 ND_DRIVER_DAX_PMEM = 1 << ND_DEVICE_DAX_PMEM, 201}; 202 203enum ars_masks { 204 ARS_STATUS_MASK = 0x0000FFFF, 205 ARS_EXT_STATUS_SHIFT = 16, 206}; 207 208/* 209 * struct nd_cmd_pkg 210 * 211 * is a wrapper to a quasi pass thru interface for invoking firmware 212 * associated with nvdimms. 213 * 214 * INPUT PARAMETERS 215 * 216 * nd_family corresponds to the firmware (e.g. DSM) interface. 217 * 218 * nd_command are the function index advertised by the firmware. 219 * 220 * nd_size_in is the size of the input parameters being passed to firmware 221 * 222 * OUTPUT PARAMETERS 223 * 224 * nd_fw_size is the size of the data firmware wants to return for 225 * the call. If nd_fw_size is greater than size of nd_size_out, only 226 * the first nd_size_out bytes are returned. 227 */ 228 229struct nd_cmd_pkg { 230 __u64 nd_family; /* family of commands */ 231 __u64 nd_command; 232 __u32 nd_size_in; /* INPUT: size of input args */ 233 __u32 nd_size_out; /* INPUT: size of payload */ 234 __u32 nd_reserved2[9]; /* reserved must be zero */ 235 __u32 nd_fw_size; /* OUTPUT: size fw wants to return */ 236 unsigned char nd_payload[]; /* Contents of call */ 237}; 238 239/* These NVDIMM families represent pre-standardization command sets */ 240#define NVDIMM_FAMILY_INTEL 0 241#define NVDIMM_FAMILY_HPE1 1 242#define NVDIMM_FAMILY_HPE2 2 243#define NVDIMM_FAMILY_MSFT 3 244#define NVDIMM_FAMILY_HYPERV 4 245#define NVDIMM_FAMILY_PAPR 5 246#define NVDIMM_FAMILY_MAX NVDIMM_FAMILY_PAPR 247 248#define NVDIMM_BUS_FAMILY_NFIT 0 249#define NVDIMM_BUS_FAMILY_INTEL 1 250#define NVDIMM_BUS_FAMILY_MAX NVDIMM_BUS_FAMILY_INTEL 251 252#define ND_IOCTL_CALL _IOWR(ND_IOCTL, ND_CMD_CALL,\ 253 struct nd_cmd_pkg) 254 255#endif /* __NDCTL_H__ */ 256