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linux-stable/include/uapi/scsi/scsi_bsg_mpi3mr.h
Sumit Saxena 7dbd0dd8cd scsi: mpi3mr: Add support for NVMe passthrough 
Add support for management applications to send an MPI3 Encapsulated NVMe
passthru command to the NVMe devices attached to an Avenger controller.
Since the NVMe drives are exposed as SCSI devices by the controller, the
standard NVMe applications cannot be used to interact with the drives and
the command sets supported are also limited by the controller firmware.
Special handling is required for MPI3 Encapsulated NVMe passthru commands
for PRP/SGL setup in the commands.

Link: https://lore.kernel.org/r/20220429211641.642010-8-sumit.saxena@broadcom.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-05-02 17:02:42 -04:00

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/* SPDX-License-Identifier: GPL-2.0-or-later WITH Linux-syscall-note */
/*
* Driver for Broadcom MPI3 Storage Controllers
*
* Copyright (C) 2017-2022 Broadcom Inc.
* (mailto: mpi3mr-linuxdrv.pdl@broadcom.com)
*
*/
#ifndef SCSI_BSG_MPI3MR_H_INCLUDED
#define SCSI_BSG_MPI3MR_H_INCLUDED
#include <linux/types.h>
/* Definitions for BSG commands */
#define MPI3MR_IOCTL_VERSION 0x06
#define MPI3MR_APP_DEFAULT_TIMEOUT (60) /*seconds*/
#define MPI3MR_BSG_ADPTYPE_UNKNOWN 0
#define MPI3MR_BSG_ADPTYPE_AVGFAMILY 1
#define MPI3MR_BSG_ADPSTATE_UNKNOWN 0
#define MPI3MR_BSG_ADPSTATE_OPERATIONAL 1
#define MPI3MR_BSG_ADPSTATE_FAULT 2
#define MPI3MR_BSG_ADPSTATE_IN_RESET 3
#define MPI3MR_BSG_ADPSTATE_UNRECOVERABLE 4
#define MPI3MR_BSG_ADPRESET_UNKNOWN 0
#define MPI3MR_BSG_ADPRESET_SOFT 1
#define MPI3MR_BSG_ADPRESET_DIAG_FAULT 2
#define MPI3MR_BSG_LOGDATA_MAX_ENTRIES 400
#define MPI3MR_BSG_LOGDATA_ENTRY_HEADER_SZ 4
#define MPI3MR_DRVBSG_OPCODE_UNKNOWN 0
#define MPI3MR_DRVBSG_OPCODE_ADPINFO 1
#define MPI3MR_DRVBSG_OPCODE_ADPRESET 2
#define MPI3MR_DRVBSG_OPCODE_ALLTGTDEVINFO 4
#define MPI3MR_DRVBSG_OPCODE_GETCHGCNT 5
#define MPI3MR_DRVBSG_OPCODE_LOGDATAENABLE 6
#define MPI3MR_DRVBSG_OPCODE_PELENABLE 7
#define MPI3MR_DRVBSG_OPCODE_GETLOGDATA 8
#define MPI3MR_DRVBSG_OPCODE_QUERY_HDB 9
#define MPI3MR_DRVBSG_OPCODE_REPOST_HDB 10
#define MPI3MR_DRVBSG_OPCODE_UPLOAD_HDB 11
#define MPI3MR_DRVBSG_OPCODE_REFRESH_HDB_TRIGGERS 12
#define MPI3MR_BSG_BUFTYPE_UNKNOWN 0
#define MPI3MR_BSG_BUFTYPE_RAIDMGMT_CMD 1
#define MPI3MR_BSG_BUFTYPE_RAIDMGMT_RESP 2
#define MPI3MR_BSG_BUFTYPE_DATA_IN 3
#define MPI3MR_BSG_BUFTYPE_DATA_OUT 4
#define MPI3MR_BSG_BUFTYPE_MPI_REPLY 5
#define MPI3MR_BSG_BUFTYPE_ERR_RESPONSE 6
#define MPI3MR_BSG_BUFTYPE_MPI_REQUEST 0xFE
#define MPI3MR_BSG_MPI_REPLY_BUFTYPE_UNKNOWN 0
#define MPI3MR_BSG_MPI_REPLY_BUFTYPE_STATUS 1
#define MPI3MR_BSG_MPI_REPLY_BUFTYPE_ADDRESS 2
#define MPI3MR_HDB_BUFTYPE_UNKNOWN 0
#define MPI3MR_HDB_BUFTYPE_TRACE 1
#define MPI3MR_HDB_BUFTYPE_FIRMWARE 2
#define MPI3MR_HDB_BUFTYPE_RESERVED 3
#define MPI3MR_HDB_BUFSTATUS_UNKNOWN 0
#define MPI3MR_HDB_BUFSTATUS_NOT_ALLOCATED 1
#define MPI3MR_HDB_BUFSTATUS_POSTED_UNPAUSED 2
#define MPI3MR_HDB_BUFSTATUS_POSTED_PAUSED 3
#define MPI3MR_HDB_BUFSTATUS_RELEASED 4
#define MPI3MR_HDB_TRIGGER_TYPE_UNKNOWN 0
#define MPI3MR_HDB_TRIGGER_TYPE_DIAGFAULT 1
#define MPI3MR_HDB_TRIGGER_TYPE_ELEMENT 2
#define MPI3MR_HDB_TRIGGER_TYPE_MASTER 3
/* Supported BSG commands */
enum command {
MPI3MR_DRV_CMD = 1,
MPI3MR_MPT_CMD = 2,
};
/**
* struct mpi3_driver_info_layout - Information about driver
*
* @information_length: Length of this structure in bytes
* @driver_signature: Driver Vendor name
* @os_name: Operating System Name
* @driver_name: Driver name
* @driver_version: Driver version
* @driver_release_date: Driver release date
* @driver_capabilities: Driver capabilities
*/
struct mpi3_driver_info_layout {
__le32 information_length;
__u8 driver_signature[12];
__u8 os_name[16];
__u8 os_version[12];
__u8 driver_name[20];
__u8 driver_version[32];
__u8 driver_release_date[20];
__le32 driver_capabilities;
};
/**
* struct mpi3mr_bsg_in_adpinfo - Adapter information request
* data returned by the driver.
*
* @adp_type: Adapter type
* @rsvd1: Reserved
* @pci_dev_id: PCI device ID of the adapter
* @pci_dev_hw_rev: PCI revision of the adapter
* @pci_subsys_dev_id: PCI subsystem device ID of the adapter
* @pci_subsys_ven_id: PCI subsystem vendor ID of the adapter
* @pci_dev: PCI device
* @pci_func: PCI function
* @pci_bus: PCI bus
* @rsvd2: Reserved
* @pci_seg_id: PCI segment ID
* @app_intfc_ver: version of the application interface definition
* @rsvd3: Reserved
* @rsvd4: Reserved
* @rsvd5: Reserved
* @driver_info: Driver Information (Version/Name)
*/
struct mpi3mr_bsg_in_adpinfo {
__u32 adp_type;
__u32 rsvd1;
__u32 pci_dev_id;
__u32 pci_dev_hw_rev;
__u32 pci_subsys_dev_id;
__u32 pci_subsys_ven_id;
__u32 pci_dev:5;
__u32 pci_func:3;
__u32 pci_bus:8;
__u16 rsvd2;
__u32 pci_seg_id;
__u32 app_intfc_ver;
__u8 adp_state;
__u8 rsvd3;
__u16 rsvd4;
__u32 rsvd5[2];
struct mpi3_driver_info_layout driver_info;
};
/**
* struct mpi3mr_bsg_adp_reset - Adapter reset request
* payload data to the driver.
*
* @reset_type: Reset type
* @rsvd1: Reserved
* @rsvd2: Reserved
*/
struct mpi3mr_bsg_adp_reset {
__u8 reset_type;
__u8 rsvd1;
__u16 rsvd2;
};
/**
* struct mpi3mr_change_count - Topology change count
* returned by the driver.
*
* @change_count: Topology change count
* @rsvd: Reserved
*/
struct mpi3mr_change_count {
__u16 change_count;
__u16 rsvd;
};
/**
* struct mpi3mr_device_map_info - Target device mapping
* information
*
* @handle: Firmware device handle
* @perst_id: Persistent ID assigned by the firmware
* @target_id: Target ID assigned by the driver
* @bus_id: Bus ID assigned by the driver
* @rsvd1: Reserved
* @rsvd2: Reserved
*/
struct mpi3mr_device_map_info {
__u16 handle;
__u16 perst_id;
__u32 target_id;
__u8 bus_id;
__u8 rsvd1;
__u16 rsvd2;
};
/**
* struct mpi3mr_all_tgt_info - Target device mapping
* information returned by the driver
*
* @num_devices: The number of devices in driver's inventory
* @rsvd1: Reserved
* @rsvd2: Reserved
* @dmi: Variable length array of mapping information of targets
*/
struct mpi3mr_all_tgt_info {
__u16 num_devices;
__u16 rsvd1;
__u32 rsvd2;
struct mpi3mr_device_map_info dmi[1];
};
/**
* struct mpi3mr_logdata_enable - Number of log data
* entries saved by the driver returned as payload data for
* enable logdata BSG request by the driver.
*
* @max_entries: Number of log data entries cached by the driver
* @rsvd: Reserved
*/
struct mpi3mr_logdata_enable {
__u16 max_entries;
__u16 rsvd;
};
/**
* struct mpi3mr_bsg_out_pel_enable - PEL enable request payload
* data to the driver.
*
* @pel_locale: PEL locale to the firmware
* @pel_class: PEL class to the firmware
* @rsvd: Reserved
*/
struct mpi3mr_bsg_out_pel_enable {
__u16 pel_locale;
__u8 pel_class;
__u8 rsvd;
};
/**
* struct mpi3mr_logdata_entry - Log data entry cached by the
* driver.
*
* @valid_entry: Is the entry valid
* @rsvd1: Reserved
* @rsvd2: Reserved
* @data: Variable length Log entry data
*/
struct mpi3mr_logdata_entry {
__u8 valid_entry;
__u8 rsvd1;
__u16 rsvd2;
__u8 data[1]; /* Variable length Array */
};
/**
* struct mpi3mr_bsg_in_log_data - Log data entries saved by
* the driver returned as payload data for Get logdata request
* by the driver.
*
* @entry: Variable length Log data entry array
*/
struct mpi3mr_bsg_in_log_data {
struct mpi3mr_logdata_entry entry[1];
};
/**
* struct mpi3mr_hdb_entry - host diag buffer entry.
*
* @buf_type: Buffer type
* @status: Buffer status
* @trigger_type: Trigger type
* @rsvd1: Reserved
* @size: Buffer size
* @rsvd2: Reserved
* @trigger_data: Trigger specific data
* @rsvd3: Reserved
* @rsvd4: Reserved
*/
struct mpi3mr_hdb_entry {
__u8 buf_type;
__u8 status;
__u8 trigger_type;
__u8 rsvd1;
__u16 size;
__u16 rsvd2;
__u64 trigger_data;
__u32 rsvd3;
__u32 rsvd4;
};
/**
* struct mpi3mr_bsg_in_hdb_status - This structure contains
* return data for the BSG request to retrieve the number of host
* diagnostic buffers supported by the driver and their current
* status and additional status specific data if any in forms of
* multiple hdb entries.
*
* @num_hdb_types: Number of host diag buffer types supported
* @rsvd1: Reserved
* @rsvd2: Reserved
* @rsvd3: Reserved
* @entry: Variable length Diag buffer status entry array
*/
struct mpi3mr_bsg_in_hdb_status {
__u8 num_hdb_types;
__u8 rsvd1;
__u16 rsvd2;
__u32 rsvd3;
struct mpi3mr_hdb_entry entry[1];
};
/**
* struct mpi3mr_bsg_out_repost_hdb - Repost host diagnostic
* buffer request payload data to the driver.
*
* @buf_type: Buffer type
* @rsvd1: Reserved
* @rsvd2: Reserved
*/
struct mpi3mr_bsg_out_repost_hdb {
__u8 buf_type;
__u8 rsvd1;
__u16 rsvd2;
};
/**
* struct mpi3mr_bsg_out_upload_hdb - Upload host diagnostic
* buffer request payload data to the driver.
*
* @buf_type: Buffer type
* @rsvd1: Reserved
* @rsvd2: Reserved
* @start_offset: Start offset of the buffer from where to copy
* @length: Length of the buffer to copy
*/
struct mpi3mr_bsg_out_upload_hdb {
__u8 buf_type;
__u8 rsvd1;
__u16 rsvd2;
__u32 start_offset;
__u32 length;
};
/**
* struct mpi3mr_bsg_out_refresh_hdb_triggers - Refresh host
* diagnostic buffer triggers request payload data to the driver.
*
* @page_type: Page type
* @rsvd1: Reserved
* @rsvd2: Reserved
*/
struct mpi3mr_bsg_out_refresh_hdb_triggers {
__u8 page_type;
__u8 rsvd1;
__u16 rsvd2;
};
/**
* struct mpi3mr_bsg_drv_cmd - Generic bsg data
* structure for all driver specific requests.
*
* @mrioc_id: Controller ID
* @opcode: Driver specific opcode
* @rsvd1: Reserved
* @rsvd2: Reserved
*/
struct mpi3mr_bsg_drv_cmd {
__u8 mrioc_id;
__u8 opcode;
__u16 rsvd1;
__u32 rsvd2[4];
};
/**
* struct mpi3mr_bsg_in_reply_buf - MPI reply buffer returned
* for MPI Passthrough request .
*
* @mpi_reply_type: Type of MPI reply
* @rsvd1: Reserved
* @rsvd2: Reserved
* @reply_buf: Variable Length buffer based on mpirep type
*/
struct mpi3mr_bsg_in_reply_buf {
__u8 mpi_reply_type;
__u8 rsvd1;
__u16 rsvd2;
__u8 reply_buf[1];
};
/**
* struct mpi3mr_buf_entry - User buffer descriptor for MPI
* Passthrough requests.
*
* @buf_type: Buffer type
* @rsvd1: Reserved
* @rsvd2: Reserved
* @buf_len: Buffer length
*/
struct mpi3mr_buf_entry {
__u8 buf_type;
__u8 rsvd1;
__u16 rsvd2;
__u32 buf_len;
};
/**
* struct mpi3mr_bsg_buf_entry_list - list of user buffer
* descriptor for MPI Passthrough requests.
*
* @num_of_entries: Number of buffer descriptors
* @rsvd1: Reserved
* @rsvd2: Reserved
* @rsvd3: Reserved
* @buf_entry: Variable length array of buffer descriptors
*/
struct mpi3mr_buf_entry_list {
__u8 num_of_entries;
__u8 rsvd1;
__u16 rsvd2;
__u32 rsvd3;
struct mpi3mr_buf_entry buf_entry[1];
};
/**
* struct mpi3mr_bsg_mptcmd - Generic bsg data
* structure for all MPI Passthrough requests .
*
* @mrioc_id: Controller ID
* @rsvd1: Reserved
* @timeout: MPI request timeout
* @buf_entry_list: Buffer descriptor list
*/
struct mpi3mr_bsg_mptcmd {
__u8 mrioc_id;
__u8 rsvd1;
__u16 timeout;
__u32 rsvd2;
struct mpi3mr_buf_entry_list buf_entry_list;
};
/**
* struct mpi3mr_bsg_packet - Generic bsg data
* structure for all supported requests .
*
* @cmd_type: represents drvrcmd or mptcmd
* @rsvd1: Reserved
* @rsvd2: Reserved
* @drvrcmd: driver request structure
* @mptcmd: mpt request structure
*/
struct mpi3mr_bsg_packet {
__u8 cmd_type;
__u8 rsvd1;
__u16 rsvd2;
__u32 rsvd3;
union {
struct mpi3mr_bsg_drv_cmd drvrcmd;
struct mpi3mr_bsg_mptcmd mptcmd;
} cmd;
};
/* MPI3: NVMe Encasulation related definitions */
#ifndef MPI3_NVME_ENCAP_CMD_MAX
#define MPI3_NVME_ENCAP_CMD_MAX (1)
#endif
struct mpi3_nvme_encapsulated_request {
__le16 host_tag;
__u8 ioc_use_only02;
__u8 function;
__le16 ioc_use_only04;
__u8 ioc_use_only06;
__u8 msg_flags;
__le16 change_count;
__le16 dev_handle;
__le16 encapsulated_command_length;
__le16 flags;
__le32 data_length;
__le32 reserved14[3];
__le32 command[MPI3_NVME_ENCAP_CMD_MAX];
};
struct mpi3_nvme_encapsulated_error_reply {
__le16 host_tag;
__u8 ioc_use_only02;
__u8 function;
__le16 ioc_use_only04;
__u8 ioc_use_only06;
__u8 msg_flags;
__le16 ioc_use_only08;
__le16 ioc_status;
__le32 ioc_log_info;
__le32 nvme_completion_entry[4];
};
#define MPI3MR_NVME_PRP_SIZE 8 /* PRP size */
#define MPI3MR_NVME_CMD_PRP1_OFFSET 24 /* PRP1 offset in NVMe cmd */
#define MPI3MR_NVME_CMD_PRP2_OFFSET 32 /* PRP2 offset in NVMe cmd */
#define MPI3MR_NVME_CMD_SGL_OFFSET 24 /* SGL offset in NVMe cmd */
#define MPI3MR_NVME_DATA_FORMAT_PRP 0
#define MPI3MR_NVME_DATA_FORMAT_SGL1 1
#define MPI3MR_NVME_DATA_FORMAT_SGL2 2
/* MPI3: task management related definitions */
struct mpi3_scsi_task_mgmt_request {
__le16 host_tag;
__u8 ioc_use_only02;
__u8 function;
__le16 ioc_use_only04;
__u8 ioc_use_only06;
__u8 msg_flags;
__le16 change_count;
__le16 dev_handle;
__le16 task_host_tag;
__u8 task_type;
__u8 reserved0f;
__le16 task_request_queue_id;
__le16 reserved12;
__le32 reserved14;
__u8 lun[8];
};
#define MPI3_SCSITASKMGMT_MSGFLAGS_DO_NOT_SEND_TASK_IU (0x08)
#define MPI3_SCSITASKMGMT_TASKTYPE_ABORT_TASK (0x01)
#define MPI3_SCSITASKMGMT_TASKTYPE_ABORT_TASK_SET (0x02)
#define MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET (0x03)
#define MPI3_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET (0x05)
#define MPI3_SCSITASKMGMT_TASKTYPE_CLEAR_TASK_SET (0x06)
#define MPI3_SCSITASKMGMT_TASKTYPE_QUERY_TASK (0x07)
#define MPI3_SCSITASKMGMT_TASKTYPE_CLEAR_ACA (0x08)
#define MPI3_SCSITASKMGMT_TASKTYPE_QUERY_TASK_SET (0x09)
#define MPI3_SCSITASKMGMT_TASKTYPE_QUERY_ASYNC_EVENT (0x0a)
#define MPI3_SCSITASKMGMT_TASKTYPE_I_T_NEXUS_RESET (0x0b)
struct mpi3_scsi_task_mgmt_reply {
__le16 host_tag;
__u8 ioc_use_only02;
__u8 function;
__le16 ioc_use_only04;
__u8 ioc_use_only06;
__u8 msg_flags;
__le16 ioc_use_only08;
__le16 ioc_status;
__le32 ioc_log_info;
__le32 termination_count;
__le32 response_data;
__le32 reserved18;
};
#define MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE (0x00)
#define MPI3_SCSITASKMGMT_RSPCODE_INVALID_FRAME (0x02)
#define MPI3_SCSITASKMGMT_RSPCODE_TM_FUNCTION_NOT_SUPPORTED (0x04)
#define MPI3_SCSITASKMGMT_RSPCODE_TM_FAILED (0x05)
#define MPI3_SCSITASKMGMT_RSPCODE_TM_SUCCEEDED (0x08)
#define MPI3_SCSITASKMGMT_RSPCODE_TM_INVALID_LUN (0x09)
#define MPI3_SCSITASKMGMT_RSPCODE_TM_OVERLAPPED_TAG (0x0a)
#define MPI3_SCSITASKMGMT_RSPCODE_IO_QUEUED_ON_IOC (0x80)
#define MPI3_SCSITASKMGMT_RSPCODE_TM_NVME_DENIED (0x81)
/* MPI3: PEL related definitions */
#define MPI3_PEL_LOCALE_FLAGS_NON_BLOCKING_BOOT_EVENT (0x0200)
#define MPI3_PEL_LOCALE_FLAGS_BLOCKING_BOOT_EVENT (0x0100)
#define MPI3_PEL_LOCALE_FLAGS_PCIE (0x0080)
#define MPI3_PEL_LOCALE_FLAGS_CONFIGURATION (0x0040)
#define MPI3_PEL_LOCALE_FLAGS_CONTROLER (0x0020)
#define MPI3_PEL_LOCALE_FLAGS_SAS (0x0010)
#define MPI3_PEL_LOCALE_FLAGS_EPACK (0x0008)
#define MPI3_PEL_LOCALE_FLAGS_ENCLOSURE (0x0004)
#define MPI3_PEL_LOCALE_FLAGS_PD (0x0002)
#define MPI3_PEL_LOCALE_FLAGS_VD (0x0001)
#define MPI3_PEL_CLASS_DEBUG (0x00)
#define MPI3_PEL_CLASS_PROGRESS (0x01)
#define MPI3_PEL_CLASS_INFORMATIONAL (0x02)
#define MPI3_PEL_CLASS_WARNING (0x03)
#define MPI3_PEL_CLASS_CRITICAL (0x04)
#define MPI3_PEL_CLASS_FATAL (0x05)
#define MPI3_PEL_CLASS_FAULT (0x06)
/* MPI3: Function definitions */
#define MPI3_BSG_FUNCTION_MGMT_PASSTHROUGH (0x0a)
#define MPI3_BSG_FUNCTION_SCSI_IO (0x20)
#define MPI3_BSG_FUNCTION_SCSI_TASK_MGMT (0x21)
#define MPI3_BSG_FUNCTION_SMP_PASSTHROUGH (0x22)
#define MPI3_BSG_FUNCTION_NVME_ENCAPSULATED (0x24)
#endif
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