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Diffstat (limited to '')
| -rw-r--r-- | nvme.h | 131 |
1 files changed, 131 insertions, 0 deletions
@@ -0,0 +1,131 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Definitions for the NVM Express interface + * Copyright (c) 2011-2014, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, 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 General Public License for + * more details. + */ + +#ifndef _NVME_H +#define _NVME_H + +#include <dirent.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <endian.h> +#include <sys/time.h> +#include <sys/stat.h> + +#include <libnvme-mi.h> + +#include "plugin.h" +#include "util/json.h" +#include "util/mem.h" +#include "util/argconfig.h" +#include "util/cleanup.h" + +enum nvme_print_flags { + NORMAL = 0, + VERBOSE = 1 << 0, /* verbosely decode complex values for humans */ + JSON = 1 << 1, /* display in json format */ + VS = 1 << 2, /* hex dump vendor specific data areas */ + BINARY = 1 << 3, /* binary dump raw bytes */ +}; + +enum nvme_cli_topo_ranking { + NVME_CLI_TOPO_NAMESPACE, + NVME_CLI_TOPO_CTRL, +}; + +#define SYS_NVME "/sys/class/nvme" + +enum nvme_dev_type { + NVME_DEV_DIRECT, + NVME_DEV_MI, +}; + +struct nvme_dev { + enum nvme_dev_type type; + union { + struct { + int fd; + struct stat stat; + } direct; + struct { + nvme_root_t root; + nvme_mi_ep_t ep; + nvme_mi_ctrl_t ctrl; + } mi; + }; + + const char *name; +}; + +#define dev_fd(d) __dev_fd(d, __func__, __LINE__) + +static inline int __dev_fd(struct nvme_dev *dev, const char *func, int line) +{ + if (dev->type != NVME_DEV_DIRECT) { + fprintf(stderr, + "warning: %s:%d not a direct transport!\n", + func, line); + return -1; + } + return dev->direct.fd; +} + +static inline nvme_mi_ep_t dev_mi_ep(struct nvme_dev *dev) +{ + if (dev->type != NVME_DEV_MI) { + fprintf(stderr, + "warning: not a MI transport!\n"); + return NULL; + } + return dev->mi.ep; +} + +void register_extension(struct plugin *plugin); + +/* + * parse_and_open - parses arguments and opens the NVMe device, populating @dev + */ +int parse_and_open(struct nvme_dev **dev, int argc, char **argv, const char *desc, + struct argconfig_commandline_options *clo); + +void dev_close(struct nvme_dev *dev); + +static inline DEFINE_CLEANUP_FUNC( + cleanup_nvme_dev, struct nvme_dev *, dev_close) +#define _cleanup_nvme_dev_ __cleanup__(cleanup_nvme_dev) + +extern const char *output_format; + +int validate_output_format(const char *format, enum nvme_print_flags *flags); +bool nvme_is_output_format_json(void); +int __id_ctrl(int argc, char **argv, struct command *cmd, + struct plugin *plugin, void (*vs)(uint8_t *vs, struct json_object *root)); + +extern int current_index; + +const char *nvme_strerror(int errnum); + +unsigned long long elapsed_utime(struct timeval start_time, + struct timeval end_time); + +/* nvme-print.c */ +const char *nvme_select_to_string(int sel); + +void d(unsigned char *buf, int len, int width, int group); +void d_raw(unsigned char *buf, unsigned len); +uint64_t int48_to_long(uint8_t *data); + +int map_log_level(int verbose, bool quiet); +#endif /* _NVME_H */ |