LXR linux/include/uapi/linux/ndctl.h

   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__ */
 215