/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* ibmvfc.h -- driver for IBM Power Virtual Fibre Channel Adapter
*
* Written By: Brian King <[email protected]>, IBM Corporation
*
* Copyright (C) IBM Corporation, 2008
*/
#ifndef _IBMVFC_H
#define _IBMVFC_H
#include <linux/list.h>
#include <linux/types.h>
#include <scsi/viosrp.h>
#define IBMVFC_NAME "ibmvfc"
#define IBMVFC_DRIVER_VERSION "1.0.11"
#define IBMVFC_DRIVER_DATE "(April 12, 2013)"
#define IBMVFC_DEFAULT_TIMEOUT 60
#define IBMVFC_ADISC_CANCEL_TIMEOUT 45
#define IBMVFC_ADISC_TIMEOUT 15
#define IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT \
(IBMVFC_ADISC_TIMEOUT + IBMVFC_ADISC_CANCEL_TIMEOUT)
#define IBMVFC_INIT_TIMEOUT 120
#define IBMVFC_ABORT_TIMEOUT 8
#define IBMVFC_ABORT_WAIT_TIMEOUT 40
#define IBMVFC_MAX_REQUESTS_DEFAULT 100
#define IBMVFC_SCSI_QDEPTH 128
#define IBMVFC_DEBUG 0
#define IBMVFC_MAX_TARGETS 1024
#define IBMVFC_MAX_LUN 0xffffffff
#define IBMVFC_MAX_SECTORS 2048
#define IBMVFC_MAX_DISC_THREADS 4
#define IBMVFC_TGT_MEMPOOL_SZ 64
#define IBMVFC_MAX_CMDS_PER_LUN 64
#define IBMVFC_MAX_HOST_INIT_RETRIES 6
#define IBMVFC_MAX_TGT_INIT_RETRIES 3
#define IBMVFC_DEV_LOSS_TMO (5 * 60)
#define IBMVFC_DEFAULT_LOG_LEVEL 2
#define IBMVFC_MAX_CDB_LEN 16
#define IBMVFC_CLS3_ERROR 0
#define IBMVFC_MQ 1
#define IBMVFC_SCSI_CHANNELS 8
#define IBMVFC_MAX_SCSI_QUEUES 16
#define IBMVFC_SCSI_HW_QUEUES 8
#define IBMVFC_MIG_NO_SUB_TO_CRQ 0
#define IBMVFC_MIG_NO_N_TO_M 0
/*
* Ensure we have resources for ERP and initialization:
* 1 for ERP
* 1 for initialization
* 1 for NPIV Logout
* 2 for BSG passthru
* 2 for each discovery thread
*/
#define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2))
/* Reserved suset of events for cancelling channelized IO commands */
#define IBMVFC_NUM_INTERNAL_SUBQ_REQ 4
#define IBMVFC_MAD_SUCCESS 0x00
#define IBMVFC_MAD_NOT_SUPPORTED 0xF1
#define IBMVFC_MAD_VERSION_NOT_SUPP 0xF2
#define IBMVFC_MAD_FAILED 0xF7
#define IBMVFC_MAD_DRIVER_FAILED 0xEE
#define IBMVFC_MAD_CRQ_ERROR 0xEF
enum ibmvfc_crq_valid {
IBMVFC_CRQ_CMD_RSP = 0x80,
IBMVFC_CRQ_INIT_RSP = 0xC0,
IBMVFC_CRQ_XPORT_EVENT = 0xFF,
};
enum ibmvfc_crq_init_msg {
IBMVFC_CRQ_INIT = 0x01,
IBMVFC_CRQ_INIT_COMPLETE = 0x02,
};
enum ibmvfc_crq_xport_evts {
IBMVFC_PARTNER_FAILED = 0x01,
IBMVFC_PARTNER_DEREGISTER = 0x02,
IBMVFC_PARTITION_MIGRATED = 0x06,
};
enum ibmvfc_cmd_status_flags {
IBMVFC_FABRIC_MAPPED = 0x0001,
IBMVFC_VIOS_FAILURE = 0x0002,
IBMVFC_FC_FAILURE = 0x0004,
IBMVFC_FC_SCSI_ERROR = 0x0008,
IBMVFC_HW_EVENT_LOGGED = 0x0010,
IBMVFC_VIOS_LOGGED = 0x0020,
};
enum ibmvfc_fabric_mapped_errors {
IBMVFC_UNABLE_TO_ESTABLISH = 0x0001,
IBMVFC_XPORT_FAULT = 0x0002,
IBMVFC_CMD_TIMEOUT = 0x0003,
IBMVFC_ENETDOWN = 0x0004,
IBMVFC_HW_FAILURE = 0x0005,
IBMVFC_LINK_DOWN_ERR = 0x0006,
IBMVFC_LINK_DEAD_ERR = 0x0007,
IBMVFC_UNABLE_TO_REGISTER = 0x0008,
IBMVFC_XPORT_BUSY = 0x000A,
IBMVFC_XPORT_DEAD = 0x000B,
IBMVFC_CONFIG_ERROR = 0x000C,
IBMVFC_NAME_SERVER_FAIL = 0x000D,
IBMVFC_LINK_HALTED = 0x000E,
IBMVFC_XPORT_GENERAL = 0x8000,
};
enum ibmvfc_vios_errors {
IBMVFC_CRQ_FAILURE = 0x0001,
IBMVFC_SW_FAILURE = 0x0002,
IBMVFC_INVALID_PARAMETER = 0x0003,
IBMVFC_MISSING_PARAMETER = 0x0004,
IBMVFC_HOST_IO_BUS = 0x0005,
IBMVFC_TRANS_CANCELLED = 0x0006,
IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
IBMVFC_INSUFFICIENT_RESOURCE = 0x0008,
IBMVFC_PLOGI_REQUIRED = 0x0010,
IBMVFC_COMMAND_FAILED = 0x8000,
};
enum ibmvfc_mad_types {
IBMVFC_NPIV_LOGIN = 0x0001,
IBMVFC_DISC_TARGETS = 0x0002,
IBMVFC_PORT_LOGIN = 0x0004,
IBMVFC_PROCESS_LOGIN = 0x0008,
IBMVFC_QUERY_TARGET = 0x0010,
IBMVFC_MOVE_LOGIN = 0x0020,
IBMVFC_IMPLICIT_LOGOUT = 0x0040,
IBMVFC_PASSTHRU = 0x0200,
IBMVFC_TMF_MAD = 0x0100,
IBMVFC_NPIV_LOGOUT = 0x0800,
IBMVFC_CHANNEL_ENQUIRY = 0x1000,
IBMVFC_CHANNEL_SETUP = 0x2000,
IBMVFC_CONNECTION_INFO = 0x4000,
};
struct ibmvfc_mad_common {
__be32 version;
__be32 reserved;
__be32 opcode;
__be16 status;
__be16 length;
__be64 tag;
} __packed __aligned(8);
struct ibmvfc_npiv_login_mad {
struct ibmvfc_mad_common common;
struct srp_direct_buf buffer;
} __packed __aligned(8);
struct ibmvfc_npiv_logout_mad {
struct ibmvfc_mad_common common;
} __packed __aligned(8);
#define IBMVFC_MAX_NAME 256
struct ibmvfc_npiv_login {
__be32 ostype;
#define IBMVFC_OS_LINUX 0x02
__be32 pad;
__be64 max_dma_len;
__be32 max_payload;
__be32 max_response;
__be32 partition_num;
__be32 vfc_frame_version;
__be16 fcp_version;
__be16 flags;
#define IBMVFC_CLIENT_MIGRATED 0x01
#define IBMVFC_FLUSH_ON_HALT 0x02
__be32 max_cmds;
__be64 capabilities;
#define IBMVFC_CAN_MIGRATE 0x01
#define IBMVFC_CAN_USE_CHANNELS 0x02
#define IBMVFC_CAN_HANDLE_FPIN 0x04
#define IBMVFC_CAN_USE_MAD_VERSION 0x08
#define IBMVFC_CAN_SEND_VF_WWPN 0x10
__be64 node_name;
struct srp_direct_buf async;
u8 partition_name[IBMVFC_MAX_NAME];
u8 device_name[IBMVFC_MAX_NAME];
u8 drc_name[IBMVFC_MAX_NAME];
__be64 reserved2[2];
} __packed __aligned(8);
struct ibmvfc_common_svc_parms {
__be16 fcph_version;
__be16 b2b_credit;
__be16 features;
__be16 bb_rcv_sz; /* upper nibble is BB_SC_N */
__be32 ratov;
__be32 edtov;
} __packed __aligned(4);
struct ibmvfc_service_parms {
struct ibmvfc_common_svc_parms common;
u8 port_name[8];
u8 node_name[8];
__be32 class1_parms[4];
__be32 class2_parms[4];
__be32 class3_parms[4];
__be32 obsolete[4];
__be32 vendor_version[4];
__be32 services_avail[2];
__be32 ext_len;
__be32 reserved[30];
__be32 clk_sync_qos[2];
__be32 reserved2;
} __packed __aligned(4);
struct ibmvfc_npiv_login_resp {
__be32 version;
__be16 status;
__be16 error;
__be32 flags;
#define IBMVFC_NATIVE_FC 0x01
__be32 reserved;
__be64 capabilities;
#define IBMVFC_CAN_FLUSH_ON_HALT 0x08
#define IBMVFC_CAN_SUPPRESS_ABTS 0x10
#define IBMVFC_MAD_VERSION_CAP 0x20
#define IBMVFC_HANDLE_VF_WWPN 0x40
#define IBMVFC_CAN_SUPPORT_CHANNELS 0x80
__be32 max_cmds;
__be32 scsi_id_sz;
__be64 max_dma_len;
__be64 scsi_id;
__be64 port_name;
__be64 node_name;
__be64 link_speed;
u8 partition_name[IBMVFC_MAX_NAME];
u8 device_name[IBMVFC_MAX_NAME];
u8 port_loc_code[IBMVFC_MAX_NAME];
u8 drc_name[IBMVFC_MAX_NAME];
struct ibmvfc_service_parms service_parms;
__be64 reserved2;
} __packed __aligned(8);
union ibmvfc_npiv_login_data {
struct ibmvfc_npiv_login login;
struct ibmvfc_npiv_login_resp resp;
} __packed __aligned(8);
struct ibmvfc_discover_targets_entry {
__be32 scsi_id;
__be32 pad;
__be64 wwpn;
#define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff
} __packed __aligned(8);
struct ibmvfc_discover_targets {
struct ibmvfc_mad_common common;
struct srp_direct_buf buffer;
__be32 flags;
#define IBMVFC_DISC_TGT_PORT_ID_WWPN_LIST 0x02
__be16 status;
__be16 error;
__be32 bufflen;
__be32 num_avail;
__be32 num_written;
__be64 reserved[2];
} __packed __aligned(8);
enum ibmvfc_fc_reason {
IBMVFC_INVALID_ELS_CMD_CODE = 0x01,
IBMVFC_INVALID_VERSION = 0x02,
IBMVFC_LOGICAL_ERROR = 0x03,
IBMVFC_INVALID_CT_IU_SIZE = 0x04,
IBMVFC_LOGICAL_BUSY = 0x05,
IBMVFC_PROTOCOL_ERROR = 0x07,
IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09,
IBMVFC_CMD_NOT_SUPPORTED = 0x0B,
IBMVFC_SERVER_NOT_AVAIL = 0x0D,
IBMVFC_CMD_IN_PROGRESS = 0x0E,
IBMVFC_VENDOR_SPECIFIC = 0xFF,
};
enum ibmvfc_fc_type {
IBMVFC_FABRIC_REJECT = 0x01,
IBMVFC_PORT_REJECT = 0x02,
IBMVFC_LS_REJECT = 0x03,
IBMVFC_FABRIC_BUSY = 0x04,
IBMVFC_PORT_BUSY = 0x05,
IBMVFC_BASIC_REJECT = 0x06,
};
enum ibmvfc_gs_explain {
IBMVFC_PORT_NAME_NOT_REG = 0x02,
};
struct ibmvfc_port_login {
struct ibmvfc_mad_common common;
__be64 scsi_id;
__be16 reserved;
__be16 fc_service_class;
__be32 blksz;
__be32 hdr_per_blk;
__be16 status;
__be16 error; /* also fc_reason */
__be16 fc_explain;
__be16 fc_type;
__be32 reserved2;
struct ibmvfc_service_parms service_parms;
struct ibmvfc_service_parms service_parms_change;
__be64 target_wwpn;
__be64 reserved3[2];
} __packed __aligned(8);
struct ibmvfc_move_login {
struct ibmvfc_mad_common common;
__be64 old_scsi_id;
__be64 new_scsi_id;
__be64 wwpn;
__be64 node_name;
__be32 flags;
#define IBMVFC_MOVE_LOGIN_IMPLICIT_OLD_FAILED 0x01
#define IBMVFC_MOVE_LOGIN_IMPLICIT_NEW_FAILED 0x02
#define IBMVFC_MOVE_LOGIN_PORT_LOGIN_FAILED 0x04
__be32 reserved;
struct ibmvfc_service_parms service_parms;
struct ibmvfc_service_parms service_parms_change;
__be32 reserved2;
__be16 service_class;
__be16 vios_flags;
#define IBMVFC_MOVE_LOGIN_VF_NOT_SENT_ADAPTER 0x01
__be64 reserved3;
} __packed __aligned(8);
struct ibmvfc_prli_svc_parms {
u8 type;
#define IBMVFC_SCSI_FCP_TYPE 0x08
u8 type_ext;
__be16 flags;
#define IBMVFC_PRLI_ORIG_PA_VALID 0x8000
#define IBMVFC_PRLI_RESP_PA_VALID 0x4000
#define IBMVFC_PRLI_EST_IMG_PAIR 0x2000
__be32 orig_pa;
__be32 resp_pa;
__be32 service_parms;
#define IBMVFC_PRLI_TASK_RETRY 0x00000200
#define IBMVFC_PRLI_RETRY 0x00000100
#define IBMVFC_PRLI_DATA_OVERLAY 0x00000040
#define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020
#define IBMVFC_PRLI_TARGET_FUNC 0x00000010
#define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002
#define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001
} __packed __aligned(4);
struct ibmvfc_process_login {
struct ibmvfc_mad_common common;
__be64 scsi_id;
struct ibmvfc_prli_svc_parms parms;
u8 reserved[48];
__be16 status;
__be16 error; /* also fc_reason */
__be32 reserved2;
__be64 target_wwpn;
__be64 reserved3[2];
} __packed __aligned(8);
struct ibmvfc_query_tgt {
struct ibmvfc_mad_common common;
__be64 wwpn;
__be64 scsi_id;
__be16 status;
__be16 error;
__be16 fc_explain;
__be16 fc_type;
__be64 reserved[2];
} __packed __aligned(8);
struct ibmvfc_implicit_logout {
struct ibmvfc_mad_common common;
__be64 old_scsi_id;
__be64 reserved[2];
} __packed __aligned(8);
struct ibmvfc_tmf {
struct ibmvfc_mad_common common;
__be64 scsi_id;
struct scsi_lun lun;
__be32 flags;
#define IBMVFC_TMF_ABORT_TASK 0x02
#define IBMVFC_TMF_ABORT_TASK_SET 0x04
#define IBMVFC_TMF_LUN_RESET 0x10
#define IBMVFC_TMF_TGT_RESET 0x20
#define IBMVFC_TMF_LUA_VALID 0x40
#define IBMVFC_TMF_SUPPRESS_ABTS 0x80
__be32 cancel_key;
__be32 my_cancel_key;
__be32 pad;
__be64 target_wwpn;
__be64 task_tag;
__be64 reserved[2];
} __packed __aligned(8);
enum ibmvfc_fcp_rsp_info_codes {
RSP_NO_FAILURE = 0x00,
RSP_TMF_REJECTED = 0x04,
RSP_TMF_FAILED = 0x05,
RSP_TMF_INVALID_LUN = 0x09,
};
struct ibmvfc_fcp_rsp_info {
u8 reserved[3];
u8 rsp_code;
u8 reserved2[4];
} __packed __aligned(2);
enum ibmvfc_fcp_rsp_flags {
FCP_BIDI_RSP = 0x80,
FCP_BIDI_READ_RESID_UNDER = 0x40,
FCP_BIDI_READ_RESID_OVER = 0x20,
FCP_CONF_REQ = 0x10,
FCP_RESID_UNDER = 0x08,
FCP_RESID_OVER = 0x04,
FCP_SNS_LEN_VALID = 0x02,
FCP_RSP_LEN_VALID = 0x01,
};
union ibmvfc_fcp_rsp_data {
struct ibmvfc_fcp_rsp_info info;
u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
} __packed __aligned(8);
struct ibmvfc_fcp_rsp {
__be64 reserved;
__be16 retry_delay_timer;
u8 flags;
u8 scsi_status;
__be32 fcp_resid;
__be32 fcp_sense_len;
__be32 fcp_rsp_len;
union ibmvfc_fcp_rsp_data data;
} __packed __aligned(8);
enum ibmvfc_cmd_flags {
IBMVFC_SCATTERLIST = 0x0001,
IBMVFC_NO_MEM_DESC = 0x0002,
IBMVFC_READ = 0x0004,
IBMVFC_WRITE = 0x0008,
IBMVFC_TMF = 0x0080,
IBMVFC_CLASS_3_ERR = 0x0100,
};
enum ibmvfc_fc_task_attr {
IBMVFC_SIMPLE_TASK = 0x00,
IBMVFC_HEAD_OF_QUEUE = 0x01,
IBMVFC_ORDERED_TASK = 0x02,
IBMVFC_ACA_TASK = 0x04,
};
enum ibmvfc_fc_tmf_flags {
IBMVFC_ABORT_TASK_SET = 0x02,
IBMVFC_LUN_RESET = 0x10,
IBMVFC_TARGET_RESET = 0x20,
};
struct ibmvfc_fcp_cmd_iu {
struct scsi_lun lun;
u8 crn;
u8 pri_task_attr;
u8 tmf_flags;
u8 add_cdb_len;
#define IBMVFC_RDDATA 0x02
#define IBMVFC_WRDATA 0x01
u8 cdb[IBMVFC_MAX_CDB_LEN];
__be32 xfer_len;
} __packed __aligned(4);
struct ibmvfc_cmd {
__be64 task_tag;
__be32 frame_type;
__be32 payload_len;
__be32 resp_len;
__be32 adapter_resid;
__be16 status;
__be16 error;
__be16 flags;
__be16 response_flags;
#define IBMVFC_ADAPTER_RESID_VALID 0x01
__be32 cancel_key;
__be32 exchange_id;
struct srp_direct_buf ext_func;
struct srp_direct_buf ioba;
struct srp_direct_buf resp;
__be64 correlation;
__be64 tgt_scsi_id;
__be64 tag;
__be64 target_wwpn;
__be64 reserved3;
union {
struct {
struct ibmvfc_fcp_cmd_iu iu;
struct ibmvfc_fcp_rsp rsp;
} v1;
struct {
__be64 reserved4;
struct ibmvfc_fcp_cmd_iu iu;
struct ibmvfc_fcp_rsp rsp;
} v2;
};
} __packed __aligned(8);
struct ibmvfc_passthru_fc_iu {
__be32 payload[7];
#define IBMVFC_ADISC 0x52000000
__be32 response[7];
};
struct ibmvfc_passthru_iu {
__be64 task_tag;
__be32 cmd_len;
__be32 rsp_len;
__be16 status;
__be16 error;
__be32 flags;
#define IBMVFC_FC_ELS 0x01
#define IBMVFC_FC_CT_IU 0x02
__be32 cancel_key;
#define IBMVFC_PASSTHRU_CANCEL_KEY 0x80000000
#define IBMVFC_INTERNAL_CANCEL_KEY 0x80000001
__be32 reserved;
struct srp_direct_buf cmd;
struct srp_direct_buf rsp;
__be64 correlation;
__be64 scsi_id;
__be64 tag;
__be64 target_wwpn;
__be64 reserved2[2];
} __packed __aligned(8);
struct ibmvfc_passthru_mad {
struct ibmvfc_mad_common common;
struct srp_direct_buf cmd_ioba;
struct ibmvfc_passthru_iu iu;
struct ibmvfc_passthru_fc_iu fc_iu;
} __packed __aligned(8);
struct ibmvfc_channel_enquiry {
struct ibmvfc_mad_common common;
__be32 flags;
#define IBMVFC_NO_CHANNELS_TO_CRQ_SUPPORT 0x01
#define IBMVFC_SUPPORT_VARIABLE_SUBQ_MSG 0x02
#define IBMVFC_NO_N_TO_M_CHANNELS_SUPPORT 0x04
__be32 num_scsi_subq_channels;
__be32 num_nvmeof_subq_channels;
__be32 num_scsi_vas_channels;
__be32 num_nvmeof_vas_channels;
} __packed __aligned(8);
struct ibmvfc_channel_setup_mad {
struct ibmvfc_mad_common common;
struct srp_direct_buf buffer;
} __packed __aligned(8);
#define IBMVFC_MAX_CHANNELS 502
struct ibmvfc_channel_setup {
__be32 flags;
#define IBMVFC_CANCEL_CHANNELS 0x01
#define IBMVFC_USE_BUFFER 0x02
#define IBMVFC_CHANNELS_CANCELED 0x04
__be32 reserved;
__be32 num_scsi_subq_channels;
__be32 num_nvmeof_subq_channels;
__be32 num_scsi_vas_channels;
__be32 num_nvmeof_vas_channels;
struct srp_direct_buf buffer;
__be64 reserved2[5];
__be64 channel_handles[IBMVFC_MAX_CHANNELS];
} __packed __aligned(8);
struct ibmvfc_connection_info {
struct ibmvfc_mad_common common;
__be64 information_bits;
#define IBMVFC_NO_FC_IO_CHANNEL 0x01
#define IBMVFC_NO_PHYP_VAS 0x02
#define IBMVFC_NO_PHYP_SUBQ 0x04
#define IBMVFC_PHYP_DEPRECATED_SUBQ 0x08
#define IBMVFC_PHYP_PRESERVED_SUBQ 0x10
#define IBMVFC_PHYP_FULL_SUBQ 0x20
__be64 reserved[16];
} __packed __aligned(8);
struct ibmvfc_trace_start_entry {
u32 xfer_len;
} __packed;
struct ibmvfc_trace_end_entry {
u16 status;
u16 error;
u8 fcp_rsp_flags;
u8 rsp_code;
u8 scsi_status;
u8 reserved;
} __packed;
struct ibmvfc_trace_entry {
struct ibmvfc_event *evt;
u32 time;
u32 scsi_id;
u32 lun;
u8 fmt;
u8 op_code;
u8 tmf_flags;
u8 type;
#define IBMVFC_TRC_START 0x00
#define IBMVFC_TRC_END 0xff
union {
struct ibmvfc_trace_start_entry start;
struct ibmvfc_trace_end_entry end;
} u;
} __packed __aligned(8);
enum ibmvfc_crq_formats {
IBMVFC_CMD_FORMAT = 0x01,
IBMVFC_ASYNC_EVENT = 0x02,
IBMVFC_MAD_FORMAT = 0x04,
};
enum ibmvfc_async_event {
IBMVFC_AE_ELS_PLOGI = 0x0001,
IBMVFC_AE_ELS_LOGO = 0x0002,
IBMVFC_AE_ELS_PRLO = 0x0004,
IBMVFC_AE_SCN_NPORT = 0x0008,
IBMVFC_AE_SCN_GROUP = 0x0010,
IBMVFC_AE_SCN_DOMAIN = 0x0020,
IBMVFC_AE_SCN_FABRIC = 0x0040,
IBMVFC_AE_LINK_UP = 0x0080,
IBMVFC_AE_LINK_DOWN = 0x0100,
IBMVFC_AE_LINK_DEAD = 0x0200,
IBMVFC_AE_HALT = 0x0400,
IBMVFC_AE_RESUME = 0x0800,
IBMVFC_AE_ADAPTER_FAILED = 0x1000,
IBMVFC_AE_FPIN = 0x2000,
};
struct ibmvfc_async_desc {
const char *desc;
enum ibmvfc_async_event ae;
int log_level;
};
struct ibmvfc_crq {
volatile u8 valid;
volatile u8 format;
u8 reserved[6];
volatile __be64 ioba;
} __packed __aligned(8);
struct ibmvfc_sub_crq {
struct ibmvfc_crq crq;
__be64 reserved[2];
} __packed __aligned(8);
enum ibmvfc_ae_link_state {
IBMVFC_AE_LS_LINK_UP = 0x01,
IBMVFC_AE_LS_LINK_BOUNCED = 0x02,
IBMVFC_AE_LS_LINK_DOWN = 0x04,
IBMVFC_AE_LS_LINK_DEAD = 0x08,
};
enum ibmvfc_ae_fpin_status {
IBMVFC_AE_FPIN_LINK_CONGESTED = 0x1,
IBMVFC_AE_FPIN_PORT_CONGESTED = 0x2,
IBMVFC_AE_FPIN_PORT_CLEARED = 0x3,
IBMVFC_AE_FPIN_PORT_DEGRADED = 0x4,
};
struct ibmvfc_async_crq {
volatile u8 valid;
u8 link_state;
u8 fpin_status;
u8 pad;
__be32 pad2;
volatile __be64 event;
volatile __be64 scsi_id;
volatile __be64 wwpn;
volatile __be64 node_name;
__be64 reserved;
} __packed __aligned(8);
union ibmvfc_iu {
struct ibmvfc_mad_common mad_common;
struct ibmvfc_npiv_login_mad npiv_login;
struct ibmvfc_npiv_logout_mad npiv_logout;
struct ibmvfc_discover_targets discover_targets;
struct ibmvfc_port_login plogi;
struct ibmvfc_process_login prli;
struct ibmvfc_move_login move_login;
struct ibmvfc_query_tgt query_tgt;
struct ibmvfc_implicit_logout implicit_logout;
struct ibmvfc_tmf tmf;
struct ibmvfc_cmd cmd;
struct ibmvfc_passthru_mad passthru;
struct ibmvfc_channel_enquiry channel_enquiry;
struct ibmvfc_channel_setup_mad channel_setup;
struct ibmvfc_connection_info connection_info;
} __packed __aligned(8);
enum ibmvfc_target_action {
IBMVFC_TGT_ACTION_NONE = 0,
IBMVFC_TGT_ACTION_INIT,
IBMVFC_TGT_ACTION_INIT_WAIT,
IBMVFC_TGT_ACTION_LOGOUT_RPORT,
IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT,
IBMVFC_TGT_ACTION_DEL_RPORT,
IBMVFC_TGT_ACTION_DELETED_RPORT,
IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT,
IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT,
};
enum ibmvfc_protocol {
IBMVFC_PROTO_SCSI = 0,
IBMVFC_PROTO_NVME = 1,
};
struct ibmvfc_target {
struct list_head queue;
struct ibmvfc_host *vhost;
enum ibmvfc_protocol protocol;
u64 scsi_id;
u64 wwpn;
u64 new_scsi_id;
struct fc_rport *rport;
int target_id;
enum ibmvfc_target_action action;
int need_login;
int add_rport;
int init_retries;
int logo_rcvd;
int move_login;
u32 cancel_key;
struct ibmvfc_service_parms service_parms;
struct ibmvfc_service_parms service_parms_change;
struct fc_rport_identifiers ids;
void (*job_step) (struct ibmvfc_target *);
struct timer_list timer;
struct kref kref;
};
/* a unit of work for the hosting partition */
struct ibmvfc_event {
struct list_head queue_list;
struct list_head cancel;
struct ibmvfc_host *vhost;
struct ibmvfc_queue *queue;
struct ibmvfc_target *tgt;
struct scsi_cmnd *cmnd;
atomic_t free;
atomic_t active;
union ibmvfc_iu *xfer_iu;
void (*done)(struct ibmvfc_event *evt);
void (*_done)(struct ibmvfc_event *evt);
struct ibmvfc_crq crq;
union ibmvfc_iu iu;
union ibmvfc_iu *sync_iu;
struct srp_direct_buf *ext_list;
dma_addr_t ext_list_token;
struct completion comp;
struct completion *eh_comp;
struct timer_list timer;
u16 hwq;
u8 reserved;
};
/* a pool of event structs for use */
struct ibmvfc_event_pool {
struct ibmvfc_event *events;
u32 size;
union ibmvfc_iu *iu_storage;
dma_addr_t iu_token;
};
enum ibmvfc_msg_fmt {
IBMVFC_CRQ_FMT = 0,
IBMVFC_ASYNC_FMT,
IBMVFC_SUB_CRQ_FMT,
};
union ibmvfc_msgs {
void *handle;
struct ibmvfc_crq *crq;
struct ibmvfc_async_crq *async;
struct ibmvfc_sub_crq *scrq;
};
struct ibmvfc_queue {
union ibmvfc_msgs msgs;
dma_addr_t msg_token;
enum ibmvfc_msg_fmt fmt;
int size, cur;
spinlock_t _lock;
spinlock_t *q_lock;
struct ibmvfc_host *vhost;
struct ibmvfc_event_pool evt_pool;
struct list_head sent;
struct list_head free;
u16 total_depth;
u16 evt_depth;
u16 reserved_depth;
u16 evt_free;
u16 reserved_free;
spinlock_t l_lock;
union ibmvfc_iu cancel_rsp;
/* Sub-CRQ fields */
unsigned long cookie;
unsigned long vios_cookie;
unsigned long hw_irq;
unsigned long irq;
unsigned long hwq_id;
char name[32];
irq_handler_t handler;
};
struct ibmvfc_channels {
struct ibmvfc_queue *scrqs;
enum ibmvfc_protocol protocol;
unsigned int active_queues;
unsigned int desired_queues;
unsigned int max_queues;
int disc_buf_sz;
struct ibmvfc_discover_targets_entry *disc_buf;
dma_addr_t disc_buf_dma;
};
enum ibmvfc_host_action {
IBMVFC_HOST_ACTION_NONE = 0,
IBMVFC_HOST_ACTION_RESET,
IBMVFC_HOST_ACTION_REENABLE,
IBMVFC_HOST_ACTION_LOGO,
IBMVFC_HOST_ACTION_LOGO_WAIT,
IBMVFC_HOST_ACTION_INIT,
IBMVFC_HOST_ACTION_INIT_WAIT,
IBMVFC_HOST_ACTION_QUERY,
IBMVFC_HOST_ACTION_QUERY_TGTS,
IBMVFC_HOST_ACTION_TGT_DEL,
IBMVFC_HOST_ACTION_ALLOC_TGTS,
IBMVFC_HOST_ACTION_TGT_INIT,
IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
};
enum ibmvfc_host_state {
IBMVFC_NO_CRQ = 0,
IBMVFC_INITIALIZING,
IBMVFC_ACTIVE,
IBMVFC_HALTED,
IBMVFC_LINK_DOWN,
IBMVFC_LINK_DEAD,
IBMVFC_HOST_OFFLINE,
};
struct ibmvfc_host {
char name[8];
struct list_head queue;
struct Scsi_Host *host;
enum ibmvfc_host_state state;
enum ibmvfc_host_action action;
#define IBMVFC_NUM_TRACE_INDEX_BITS 8
#define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
#define IBMVFC_TRACE_INDEX_MASK (IBMVFC_NUM_TRACE_ENTRIES - 1)
#define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
struct ibmvfc_trace_entry *trace;
atomic_t trace_index;
int num_targets;
struct list_head targets;
struct list_head purge;
struct device *dev;
struct dma_pool *sg_pool;
mempool_t *tgt_pool;
struct ibmvfc_queue crq;
struct ibmvfc_queue async_crq;
struct ibmvfc_channels scsi_scrqs;
struct ibmvfc_npiv_login login_info;
union ibmvfc_npiv_login_data *login_buf;
dma_addr_t login_buf_dma;
struct ibmvfc_channel_setup *channel_setup_buf;
dma_addr_t channel_setup_dma;
int log_level;
struct mutex passthru_mutex;
unsigned int max_vios_scsi_channels;
int task_set;
int init_retries;
int discovery_threads;
int abort_threads;
unsigned int client_migrated:1;
unsigned int reinit:1;
unsigned int delay_init:1;
unsigned int logged_in:1;
unsigned int mq_enabled:1;
unsigned int using_channels:1;
unsigned int do_enquiry:1;
unsigned int aborting_passthru:1;
unsigned int scan_complete:1;
int scan_timeout;
int events_to_log;
#define IBMVFC_AE_LINKUP 0x0001
#define IBMVFC_AE_LINKDOWN 0x0002
#define IBMVFC_AE_RSCN 0x0004
unsigned int partition_number;
char partition_name[97];
void (*job_step) (struct ibmvfc_host *);
struct task_struct *work_thread;
struct tasklet_struct tasklet;
struct work_struct rport_add_work_q;
wait_queue_head_t init_wait_q;
wait_queue_head_t work_wait_q;
};
#define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
#define tgt_dbg(t, fmt, ...) \
DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
#define tgt_info(t, fmt, ...) \
dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
#define tgt_err(t, fmt, ...) \
dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
#define tgt_log(t, level, fmt, ...) \
do { \
if ((t)->vhost->log_level >= level) \
tgt_err(t, fmt, ##__VA_ARGS__); \
} while (0)
#define ibmvfc_dbg(vhost, ...) \
DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
#define ibmvfc_log(vhost, level, ...) \
do { \
if ((vhost)->log_level >= level) \
dev_err((vhost)->dev, ##__VA_ARGS__); \
} while (0)
#define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
#define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
#ifdef CONFIG_SCSI_IBMVFC_TRACE
#define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
#define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
#else
#define ibmvfc_create_trace_file(kobj, attr) 0
#define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
#endif
#endif
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