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ndctl.h
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/* * 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; } __attribute__((packed)); struct nd_cmd_get_config_size { __u32 status; __u32 config_size; __u32 max_xfer; } __attribute__((packed)); struct nd_cmd_get_config_data_hdr { __u32 in_offset; __u32 in_length; __u32 status; __u8 out_buf[0]; } __attribute__((packed)); struct nd_cmd_set_config_hdr { __u32 in_offset; __u32 in_length; __u8 in_buf[0]; } __attribute__((packed)); struct nd_cmd_vendor_hdr { __u32 opcode; __u32 in_length; __u8 in_buf[0]; } __attribute__((packed)); struct nd_cmd_vendor_tail { __u32 status; __u32 out_length; __u8 out_buf[0]; } __attribute__((packed)); struct nd_cmd_ars_cap { __u64 address; __u64 length; __u32 status; __u32 max_ars_out; __u32 clear_err_unit; __u16 flags; __u16 reserved; } __attribute__((packed)); struct nd_cmd_ars_start { __u64 address; __u64 length; __u16 type; __u8 flags; __u8 reserved[5]; __u32 status; __u32 scrub_time; } __attribute__((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; } __attribute__((packed)) records[0]; } __attribute__((packed)); struct nd_cmd_clear_error { __u64 address; __u64 length; __u32 status; __u8 reserved[4]; __u64 cleared; } __attribute__((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) { static const char * const names[] = { [ND_CMD_ARS_CAP] = "ars_cap", [ND_CMD_ARS_START] = "ars_start", [ND_CMD_ARS_STATUS] = "ars_status", [ND_CMD_CLEAR_ERROR] = "clear_error", [ND_CMD_CALL] = "cmd_call", }; if (cmd < ARRAY_SIZE(names) && names[cmd]) return names[cmd]; return "unknown"; } static __inline__ const char *nvdimm_cmd_name(unsigned cmd) { static const char * const names[] = { [ND_CMD_SMART] = "smart", [ND_CMD_SMART_THRESHOLD] = "smart_thresh", [ND_CMD_DIMM_FLAGS] = "flags", [ND_CMD_GET_CONFIG_SIZE] = "get_size", [ND_CMD_GET_CONFIG_DATA] = "get_data", [ND_CMD_SET_CONFIG_DATA] = "set_data", [ND_CMD_VENDOR_EFFECT_LOG_SIZE] = "effect_size", [ND_CMD_VENDOR_EFFECT_LOG] = "effect_log", [ND_CMD_VENDOR] = "vendor", [ND_CMD_CALL] = "cmd_call", }; if (cmd < ARRAY_SIZE(names) && names[cmd]) return names[cmd]; 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_NAMESPACE_BLK 6 /* BLK namespace (may alias with PMEM) */ #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_NAMESPACE_BLK = 1 << ND_DEVICE_NAMESPACE_BLK, ND_DRIVER_DAX_PMEM = 1 << ND_DEVICE_DAX_PMEM, }; enum { ND_MIN_NAMESPACE_SIZE = PAGE_SIZE, }; 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 ND_IOCTL_CALL _IOWR(ND_IOCTL, ND_CMD_CALL,\ struct nd_cmd_pkg) #endif /* __NDCTL_H__ */