Quellcode-Bibliothek ndctl.h Sprache: C

/*
* Copyright (c) 2014-2016, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU Lesser General Public License,
* version 2.1, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
* more details.
*/
#ifndef __NDCTL_H__
#define __NDCTL_H__

#include <linux/types.h>

struct nd_cmd_dimm_flags {
__u32 status;
__u32 flags;
} __packed;

struct nd_cmd_get_config_size {
__u32 status;
__u32 config_size;
__u32 max_xfer;
} __packed;

struct nd_cmd_get_config_data_hdr {
__u32 in_offset;
__u32 in_length;
__u32 status;
__u8 out_buf[];
} __packed;

struct nd_cmd_set_config_hdr {
__u32 in_offset;
__u32 in_length;
__u8 in_buf[];
} __packed;

struct nd_cmd_vendor_hdr {
__u32 opcode;
__u32 in_length;
__u8 in_buf[];
} __packed;

struct nd_cmd_vendor_tail {
__u32 status;
__u32 out_length;
__u8 out_buf[];
} __packed;

struct nd_cmd_ars_cap {
__u64 address;
__u64 length;
__u32 status;
__u32 max_ars_out;
__u32 clear_err_unit;
__u16 flags;
__u16 reserved;
} __packed;

struct nd_cmd_ars_start {
__u64 address;
__u64 length;
__u16 type;
__u8 flags;
__u8 reserved[5];
__u32 status;
__u32 scrub_time;
} __packed;

struct nd_cmd_ars_status {
__u32 status;
__u32 out_length;
__u64 address;
__u64 length;
__u64 restart_address;
__u64 restart_length;
__u16 type;
__u16 flags;
__u32 num_records;
struct nd_ars_record {
  __u32 handle;
  __u32 reserved;
  __u64 err_address;
  __u64 length;
} __packed records[];
} __packed;

struct nd_cmd_clear_error {
__u64 address;
__u64 length;
__u32 status;
__u8 reserved[4];
__u64 cleared;
} __packed;

enum {
ND_CMD_IMPLEMENTED = 0,

/* bus commands */
ND_CMD_ARS_CAP = 1,
ND_CMD_ARS_START = 2,
ND_CMD_ARS_STATUS = 3,
ND_CMD_CLEAR_ERROR = 4,

/* per-dimm commands */
ND_CMD_SMART = 1,
ND_CMD_SMART_THRESHOLD = 2,
ND_CMD_DIMM_FLAGS = 3,
ND_CMD_GET_CONFIG_SIZE = 4,
ND_CMD_GET_CONFIG_DATA = 5,
ND_CMD_SET_CONFIG_DATA = 6,
ND_CMD_VENDOR_EFFECT_LOG_SIZE = 7,
ND_CMD_VENDOR_EFFECT_LOG = 8,
ND_CMD_VENDOR = 9,
ND_CMD_CALL = 10,
};

enum {
ND_ARS_VOLATILE = 1,
ND_ARS_PERSISTENT = 2,
ND_ARS_RETURN_PREV_DATA = 1 << 1,
ND_CONFIG_LOCKED = 1,
};

static inline const char *nvdimm_bus_cmd_name(unsigned cmd)
{
switch (cmd) {
case ND_CMD_ARS_CAP:  return "ars_cap";
case ND_CMD_ARS_START:  return "ars_start";
case ND_CMD_ARS_STATUS:  return "ars_status";
case ND_CMD_CLEAR_ERROR: return "clear_error";
case ND_CMD_CALL:  return "cmd_call";
default:   return "unknown";
}
}

static inline const char *nvdimm_cmd_name(unsigned cmd)
{
switch (cmd) {
case ND_CMD_SMART:   return "smart";
case ND_CMD_SMART_THRESHOLD:  return "smart_thresh";
case ND_CMD_DIMM_FLAGS:   return "flags";
case ND_CMD_GET_CONFIG_SIZE:  return "get_size";
case ND_CMD_GET_CONFIG_DATA:  return "get_data";
case ND_CMD_SET_CONFIG_DATA:  return "set_data";
case ND_CMD_VENDOR_EFFECT_LOG_SIZE: return "effect_size";
case ND_CMD_VENDOR_EFFECT_LOG:  return "effect_log";
case ND_CMD_VENDOR:   return "vendor";
case ND_CMD_CALL:   return "cmd_call";
default:    return "unknown";
}
}

#define ND_IOCTL 'N'

#define ND_IOCTL_DIMM_FLAGS  _IOWR(ND_IOCTL, ND_CMD_DIMM_FLAGS,\
     struct nd_cmd_dimm_flags)

#define ND_IOCTL_GET_CONFIG_SIZE _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_SIZE,\
     struct nd_cmd_get_config_size)

#define ND_IOCTL_GET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_GET_CONFIG_DATA,\
     struct nd_cmd_get_config_data_hdr)

#define ND_IOCTL_SET_CONFIG_DATA _IOWR(ND_IOCTL, ND_CMD_SET_CONFIG_DATA,\
     struct nd_cmd_set_config_hdr)

#define ND_IOCTL_VENDOR   _IOWR(ND_IOCTL, ND_CMD_VENDOR,\
     struct nd_cmd_vendor_hdr)

#define ND_IOCTL_ARS_CAP  _IOWR(ND_IOCTL, ND_CMD_ARS_CAP,\
     struct nd_cmd_ars_cap)

#define ND_IOCTL_ARS_START  _IOWR(ND_IOCTL, ND_CMD_ARS_START,\
     struct nd_cmd_ars_start)

#define ND_IOCTL_ARS_STATUS  _IOWR(ND_IOCTL, ND_CMD_ARS_STATUS,\
     struct nd_cmd_ars_status)

#define ND_IOCTL_CLEAR_ERROR  _IOWR(ND_IOCTL, ND_CMD_CLEAR_ERROR,\
     struct nd_cmd_clear_error)

#define ND_DEVICE_DIMM 1            /* nd_dimm: container for "config data" */
#define ND_DEVICE_REGION_PMEM 2     /* nd_region: (parent of PMEM namespaces) */
#define ND_DEVICE_REGION_BLK 3      /* nd_region: (parent of BLK namespaces) */
#define ND_DEVICE_NAMESPACE_IO 4    /* legacy persistent memory */
#define ND_DEVICE_NAMESPACE_PMEM 5  /* PMEM namespace (may alias with BLK) */
#define ND_DEVICE_DAX_PMEM 7        /* Device DAX interface to pmem */

enum nd_driver_flags {
ND_DRIVER_DIMM            = 1 << ND_DEVICE_DIMM,
ND_DRIVER_REGION_PMEM     = 1 << ND_DEVICE_REGION_PMEM,
ND_DRIVER_REGION_BLK      = 1 << ND_DEVICE_REGION_BLK,
ND_DRIVER_NAMESPACE_IO    = 1 << ND_DEVICE_NAMESPACE_IO,
ND_DRIVER_NAMESPACE_PMEM  = 1 << ND_DEVICE_NAMESPACE_PMEM,
ND_DRIVER_DAX_PMEM   = 1 << ND_DEVICE_DAX_PMEM,
};

enum ars_masks {
ARS_STATUS_MASK = 0x0000FFFF,
ARS_EXT_STATUS_SHIFT = 16,
};

/*
* struct nd_cmd_pkg
*
* is a wrapper to a quasi pass thru interface for invoking firmware
* associated with nvdimms.
*
* INPUT PARAMETERS
*
* nd_family corresponds to the firmware (e.g. DSM) interface.
*
* nd_command are the function index advertised by the firmware.
*
* nd_size_in is the size of the input parameters being passed to firmware
*
* OUTPUT PARAMETERS
*
* nd_fw_size is the size of the data firmware wants to return for
* the call.  If nd_fw_size is greater than size of nd_size_out, only
* the first nd_size_out bytes are returned.
*/

struct nd_cmd_pkg {
__u64   nd_family;  /* family of commands */
__u64   nd_command;
__u32   nd_size_in;  /* INPUT: size of input args */
__u32   nd_size_out;  /* INPUT: size of payload */
__u32   nd_reserved2[9]; /* reserved must be zero */
__u32   nd_fw_size;  /* OUTPUT: size fw wants to return */
unsigned char nd_payload[]; /* Contents of call      */
};

/* These NVDIMM families represent pre-standardization command sets */
#define NVDIMM_FAMILY_INTEL 0
#define NVDIMM_FAMILY_HPE1 1
#define NVDIMM_FAMILY_HPE2 2
#define NVDIMM_FAMILY_MSFT 3
#define NVDIMM_FAMILY_HYPERV 4
#define NVDIMM_FAMILY_PAPR 5
#define NVDIMM_FAMILY_MAX NVDIMM_FAMILY_PAPR

#define NVDIMM_BUS_FAMILY_NFIT 0
#define NVDIMM_BUS_FAMILY_INTEL 1
#define NVDIMM_BUS_FAMILY_MAX NVDIMM_BUS_FAMILY_INTEL

#define ND_IOCTL_CALL   _IOWR(ND_IOCTL, ND_CMD_CALL,\
     struct nd_cmd_pkg)

#endif /* __NDCTL_H__ */

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