diff options
Diffstat (limited to 'drivers/scsi/ibmvscsi/ibmvfc.h')
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvfc.h | 938 |
1 files changed, 938 insertions, 0 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h new file mode 100644 index 000000000..c39a245f4 --- /dev/null +++ b/drivers/scsi/ibmvscsi/ibmvfc.h @@ -0,0 +1,938 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * ibmvfc.h -- driver for IBM Power Virtual Fibre Channel Adapter + * + * Written By: Brian King <brking@linux.vnet.ibm.com>, 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_DEBUG 0 +#define IBMVFC_MAX_TARGETS 1024 +#define IBMVFC_MAX_LUN 0xffffffff +#define IBMVFC_MAX_SECTORS 0xffffu +#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)) + +#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, +}; + +struct ibmvfc_target { + struct list_head queue; + struct ibmvfc_host *vhost; + 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; +}; + +/* 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; + 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]; +}; + +struct ibmvfc_scsi_channels { + struct ibmvfc_queue *scrqs; + unsigned int active_queues; +}; + +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_scsi_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 disc_buf_sz; + int log_level; + struct ibmvfc_discover_targets_entry *disc_buf; + struct mutex passthru_mutex; + int max_vios_scsi_channels; + int task_set; + int init_retries; + int discovery_threads; + int abort_threads; + int client_migrated; + int reinit; + int delay_init; + int scan_complete; + int scan_timeout; + int logged_in; + int mq_enabled; + int using_channels; + int do_enquiry; + int client_scsi_channels; + int aborting_passthru; + int events_to_log; +#define IBMVFC_AE_LINKUP 0x0001 +#define IBMVFC_AE_LINKDOWN 0x0002 +#define IBMVFC_AE_RSCN 0x0004 + dma_addr_t disc_buf_dma; + 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 |