diff options
Diffstat (limited to 'src/nvme/types.h')
| -rw-r--r-- | src/nvme/types.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/nvme/types.h b/src/nvme/types.h index 3d67bc8..94066fc 100644 --- a/src/nvme/types.h +++ b/src/nvme/types.h @@ -4857,6 +4857,34 @@ enum nvmf_tcp_sectype { }; /** + * enum nvmf_log_discovery_lid_support - Discovery log specific support + * @NVMF_LOG_DISC_LID_NONE: None + * @NVMF_LOG_DISC_LID_EXTDLPES: Extended Discovery Log Page Entries Supported + * @NVMF_LOG_DISC_LID_PLEOS: Port Local Entries Only Supported + * @NVMF_LOG_DISC_LID_ALLSUBES: All NVM Subsystem Entries Supported + */ +enum nvmf_log_discovery_lid_support { + NVMF_LOG_DISC_LID_NONE = 0, + NVMF_LOG_DISC_LID_EXTDLPES = (1 << 0), + NVMF_LOG_DISC_LID_PLEOS = (1 << 1), + NVMF_LOG_DISC_LID_ALLSUBES = (1 << 2), +}; + +/** + * enum nvmf_log_discovery_lsp - Discovery log specific field + * @NVMF_LOG_DISC_LSP_NONE: None + * @NVMF_LOG_DISC_LSP_EXTDLPE: Extended Discovery Log Page Entries + * @NVMF_LOG_DISC_LSP_PLEO: Port Local Entries Only + * @NVMF_LOG_DISC_LSP_ALLSUBE: All NVM Subsystem Entries + */ +enum nvmf_log_discovery_lsp { + NVMF_LOG_DISC_LSP_NONE = 0, + NVMF_LOG_DISC_LSP_EXTDLPE = (1 << 0), + NVMF_LOG_DISC_LSP_PLEO = (1 << 1), + NVMF_LOG_DISC_LSP_ALLSUBE = (1 << 2), +}; + +/** * struct nvmf_discovery_log - Discovery Log Page (Log Identifier 70h) * @genctr: Generation Counter (GENCTR): Indicates the version of the discovery * information, starting at a value of 0h. For each change in the @@ -6114,6 +6142,75 @@ static inline __u16 nvme_status_code(__u16 status_field) } /** + * enum nvme_status_type - type encoding for NVMe return values, when + * represented as an int. + * + * The nvme_* api returns an int, with negative values indicating an internal + * or syscall error, zero signifying success, positive values representing + * the NVMe status. + * + * That latter case (the NVMe status) may represent status values from + * different parts of the transport/controller/etc, and are at most 16 bits of + * data. So, we use the most-significant 3 bits of the signed int to indicate + * which type of status this is. + * + * @NVME_STATUS_TYPE_SHIFT: shift value for status bits + * @NVME_STATUS_TYPE_MASK: mask value for status bits + * + * @NVME_STATUS_TYPE_NVME: NVMe command status value, typically from CDW3 + * @NVME_STATUS_TYPE_MI: NVMe-MI header status + */ +enum nvme_status_type { + NVME_STATUS_TYPE_SHIFT = 27, + NVME_STATUS_TYPE_MASK = 0x7, + + NVME_STATUS_TYPE_NVME = 0, + NVME_STATUS_TYPE_MI = 1, +}; + +/** + * nvme_status_get_type() - extract the type from a nvme_* return value + * @status: the (non-negative) return value from the NVMe API + * + * Returns: the type component of the status. + */ +static inline __u32 nvme_status_get_type(int status) +{ + return NVME_GET(status, STATUS_TYPE); +} + +/** + * nvme_status_get_value() - extract the status value from a nvme_* return + * value + * @status: the (non-negative) return value from the NVMe API + * + * Returns: the value component of the status; the set of values will depend + * on the status type. + */ +static inline __u32 nvme_status_get_value(int status) +{ + return status & ~(NVME_STATUS_TYPE_MASK << NVME_STATUS_TYPE_SHIFT); +} + +/** + * nvme_status_equals() - helper to check a status against a type and value + * @status: the (non-negative) return value from the NVMe API + * @type: the status type + * @value: the status value + * + * Returns: true if @status is of the specified type and value + */ +static inline __u32 nvme_status_equals(int status, enum nvme_status_type type, + unsigned int value) +{ + if (status < 0) + return false; + + return nvme_status_get_type(status) == type && + nvme_status_get_value(status) == value; +} + +/** * enum nvme_admin_opcode - Known NVMe admin opcodes * @nvme_admin_delete_sq: Delete I/O Submission Queue * @nvme_admin_create_sq: Create I/O Submission Queue @@ -6950,6 +7047,20 @@ enum nvme_fctype { }; /** + * enum nvme_data_tfr - Data transfer direction of the command + * @NVME_DATA_TFR_NO_DATA_TFR: No data transfer + * @NVME_DATA_TFR_HOST_TO_CTRL: Host to controller + * @NVME_DATA_TFR_CTRL_TO_HOST: Controller to host + * @NVME_DATA_TFR_BIDIRECTIONAL: Bidirectional + */ +enum nvme_data_tfr { + NVME_DATA_TFR_NO_DATA_TFR = 0x0, + NVME_DATA_TFR_HOST_TO_CTRL = 0x1, + NVME_DATA_TFR_CTRL_TO_HOST = 0x2, + NVME_DATA_TFR_BIDIRECTIONAL = 0x3, +}; + +/** * enum nvme_io_opcode - Opcodes for I/O Commands * @nvme_cmd_flush: Flush * @nvme_cmd_write: Write |