diff options
Diffstat (limited to 'drivers/s390/scsi/zfcp_fsf.h')
| -rw-r--r-- | drivers/s390/scsi/zfcp_fsf.h | 459 |
1 files changed, 459 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h new file mode 100644 index 000000000..535628b92 --- /dev/null +++ b/drivers/s390/scsi/zfcp_fsf.h @@ -0,0 +1,459 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * zfcp device driver + * + * Interface to the FSF support functions. + * + * Copyright IBM Corp. 2002, 2018 + */ + +#ifndef FSF_H +#define FSF_H + +#include <linux/pfn.h> +#include <linux/scatterlist.h> +#include <scsi/libfc.h> + +#define FSF_QTCB_CURRENT_VERSION 0x00000001 + +/* FSF commands */ +#define FSF_QTCB_FCP_CMND 0x00000001 +#define FSF_QTCB_ABORT_FCP_CMND 0x00000002 +#define FSF_QTCB_OPEN_PORT_WITH_DID 0x00000005 +#define FSF_QTCB_OPEN_LUN 0x00000006 +#define FSF_QTCB_CLOSE_LUN 0x00000007 +#define FSF_QTCB_CLOSE_PORT 0x00000008 +#define FSF_QTCB_CLOSE_PHYSICAL_PORT 0x00000009 +#define FSF_QTCB_SEND_ELS 0x0000000B +#define FSF_QTCB_SEND_GENERIC 0x0000000C +#define FSF_QTCB_EXCHANGE_CONFIG_DATA 0x0000000D +#define FSF_QTCB_EXCHANGE_PORT_DATA 0x0000000E +#define FSF_QTCB_DOWNLOAD_CONTROL_FILE 0x00000012 +#define FSF_QTCB_UPLOAD_CONTROL_FILE 0x00000013 + +/* FSF QTCB types */ +#define FSF_IO_COMMAND 0x00000001 +#define FSF_SUPPORT_COMMAND 0x00000002 +#define FSF_CONFIG_COMMAND 0x00000003 +#define FSF_PORT_COMMAND 0x00000004 + +/* FSF protocol states */ +#define FSF_PROT_GOOD 0x00000001 +#define FSF_PROT_QTCB_VERSION_ERROR 0x00000010 +#define FSF_PROT_SEQ_NUMB_ERROR 0x00000020 +#define FSF_PROT_UNSUPP_QTCB_TYPE 0x00000040 +#define FSF_PROT_HOST_CONNECTION_INITIALIZING 0x00000080 +#define FSF_PROT_FSF_STATUS_PRESENTED 0x00000100 +#define FSF_PROT_DUPLICATE_REQUEST_ID 0x00000200 +#define FSF_PROT_LINK_DOWN 0x00000400 +#define FSF_PROT_REEST_QUEUE 0x00000800 +#define FSF_PROT_ERROR_STATE 0x01000000 + +/* FSF states */ +#define FSF_GOOD 0x00000000 +#define FSF_PORT_ALREADY_OPEN 0x00000001 +#define FSF_LUN_ALREADY_OPEN 0x00000002 +#define FSF_PORT_HANDLE_NOT_VALID 0x00000003 +#define FSF_LUN_HANDLE_NOT_VALID 0x00000004 +#define FSF_HANDLE_MISMATCH 0x00000005 +#define FSF_SERVICE_CLASS_NOT_SUPPORTED 0x00000006 +#define FSF_FCPLUN_NOT_VALID 0x00000009 +#define FSF_LUN_SHARING_VIOLATION 0x00000012 +#define FSF_FCP_COMMAND_DOES_NOT_EXIST 0x00000022 +#define FSF_DIRECTION_INDICATOR_NOT_VALID 0x00000030 +#define FSF_CMND_LENGTH_NOT_VALID 0x00000033 +#define FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED 0x00000040 +#define FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED 0x00000041 +#define FSF_ELS_COMMAND_REJECTED 0x00000050 +#define FSF_GENERIC_COMMAND_REJECTED 0x00000051 +#define FSF_PORT_BOXED 0x00000059 +#define FSF_LUN_BOXED 0x0000005A +#define FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE 0x0000005B +#define FSF_PAYLOAD_SIZE_MISMATCH 0x00000060 +#define FSF_REQUEST_SIZE_TOO_LARGE 0x00000061 +#define FSF_RESPONSE_SIZE_TOO_LARGE 0x00000062 +#define FSF_SBAL_MISMATCH 0x00000063 +#define FSF_INCONSISTENT_PROT_DATA 0x00000070 +#define FSF_INVALID_PROT_PARM 0x00000071 +#define FSF_BLOCK_GUARD_CHECK_FAILURE 0x00000081 +#define FSF_APP_TAG_CHECK_FAILURE 0x00000082 +#define FSF_REF_TAG_CHECK_FAILURE 0x00000083 +#define FSF_ADAPTER_STATUS_AVAILABLE 0x000000AD +#define FSF_FCP_RSP_AVAILABLE 0x000000AF +#define FSF_UNKNOWN_COMMAND 0x000000E2 +#define FSF_UNKNOWN_OP_SUBTYPE 0x000000E3 +#define FSF_INVALID_COMMAND_OPTION 0x000000E5 + +#define FSF_PROT_STATUS_QUAL_SIZE 16 +#define FSF_STATUS_QUALIFIER_SIZE 16 + +/* FSF status qualifier, recommendations */ +#define FSF_SQ_NO_RECOM 0x00 +#define FSF_SQ_FCP_RSP_AVAILABLE 0x01 +#define FSF_SQ_RETRY_IF_POSSIBLE 0x02 +#define FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED 0x03 +#define FSF_SQ_INVOKE_LINK_TEST_PROCEDURE 0x04 +#define FSF_SQ_COMMAND_ABORTED 0x06 +#define FSF_SQ_NO_RETRY_POSSIBLE 0x07 + +/* FSF status qualifier (most significant 4 bytes), local link down */ +#define FSF_PSQ_LINK_NO_LIGHT 0x00000004 +#define FSF_PSQ_LINK_WRAP_PLUG 0x00000008 +#define FSF_PSQ_LINK_NO_FCP 0x00000010 +#define FSF_PSQ_LINK_FIRMWARE_UPDATE 0x00000020 +#define FSF_PSQ_LINK_INVALID_WWPN 0x00000100 +#define FSF_PSQ_LINK_NO_NPIV_SUPPORT 0x00000200 +#define FSF_PSQ_LINK_NO_FCP_RESOURCES 0x00000400 +#define FSF_PSQ_LINK_NO_FABRIC_RESOURCES 0x00000800 +#define FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE 0x00001000 +#define FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED 0x00002000 +#define FSF_PSQ_LINK_MODE_TABLE_CURRUPTED 0x00004000 +#define FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT 0x00008000 + +/* payload size in status read buffer */ +#define FSF_STATUS_READ_PAYLOAD_SIZE 4032 + +/* number of status read buffers that should be sent by ULP */ +#define FSF_STATUS_READS_RECOM 16 + +/* status types in status read buffer */ +#define FSF_STATUS_READ_PORT_CLOSED 0x00000001 +#define FSF_STATUS_READ_INCOMING_ELS 0x00000002 +#define FSF_STATUS_READ_SENSE_DATA_AVAIL 0x00000003 +#define FSF_STATUS_READ_BIT_ERROR_THRESHOLD 0x00000004 +#define FSF_STATUS_READ_LINK_DOWN 0x00000005 +#define FSF_STATUS_READ_LINK_UP 0x00000006 +#define FSF_STATUS_READ_NOTIFICATION_LOST 0x00000009 +#define FSF_STATUS_READ_FEATURE_UPDATE_ALERT 0x0000000C + +/* status subtypes for link down */ +#define FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK 0x00000000 +#define FSF_STATUS_READ_SUB_FDISC_FAILED 0x00000001 +#define FSF_STATUS_READ_SUB_FIRMWARE_UPDATE 0x00000002 + +/* status subtypes for unsolicited status notification lost */ +#define FSF_STATUS_READ_SUB_INCOMING_ELS 0x00000001 + +/* topologie that is detected by the adapter */ +#define FSF_TOPO_P2P 0x00000001 +#define FSF_TOPO_FABRIC 0x00000002 +#define FSF_TOPO_AL 0x00000003 + +/* data direction for FCP commands */ +#define FSF_DATADIR_WRITE 0x00000001 +#define FSF_DATADIR_READ 0x00000002 +#define FSF_DATADIR_CMND 0x00000004 +#define FSF_DATADIR_DIF_WRITE_INSERT 0x00000009 +#define FSF_DATADIR_DIF_READ_STRIP 0x0000000a +#define FSF_DATADIR_DIF_WRITE_CONVERT 0x0000000b +#define FSF_DATADIR_DIF_READ_CONVERT 0X0000000c + +/* data protection control flags */ +#define FSF_APP_TAG_CHECK_ENABLE 0x10 + +/* fc service class */ +#define FSF_CLASS_3 0x00000003 + +/* logging space behind QTCB */ +#define FSF_QTCB_LOG_SIZE 1024 + +/* channel features */ +#define FSF_FEATURE_NOTIFICATION_LOST 0x00000008 +#define FSF_FEATURE_HBAAPI_MANAGEMENT 0x00000010 +#define FSF_FEATURE_ELS_CT_CHAINED_SBALS 0x00000020 +#define FSF_FEATURE_UPDATE_ALERT 0x00000100 +#define FSF_FEATURE_MEASUREMENT_DATA 0x00000200 +#define FSF_FEATURE_DIF_PROT_TYPE1 0x00010000 +#define FSF_FEATURE_DIX_PROT_TCPIP 0x00020000 + +/* host connection features */ +#define FSF_FEATURE_NPIV_MODE 0x00000001 + +/* option */ +#define FSF_OPEN_LUN_SUPPRESS_BOXING 0x00000001 + +struct fsf_queue_designator { + u8 cssid; + u8 chpid; + u8 hla; + u8 ua; + u32 res1; +} __attribute__ ((packed)); + +struct fsf_bit_error_payload { + u32 res1; + u32 link_failure_error_count; + u32 loss_of_sync_error_count; + u32 loss_of_signal_error_count; + u32 primitive_sequence_error_count; + u32 invalid_transmission_word_error_count; + u32 crc_error_count; + u32 primitive_sequence_event_timeout_count; + u32 elastic_buffer_overrun_error_count; + u32 fcal_arbitration_timeout_count; + u32 advertised_receive_b2b_credit; + u32 current_receive_b2b_credit; + u32 advertised_transmit_b2b_credit; + u32 current_transmit_b2b_credit; +} __attribute__ ((packed)); + +struct fsf_link_down_info { + u32 error_code; + u32 res1; + u8 res2[2]; + u8 primary_status; + u8 ioerr_code; + u8 action_code; + u8 reason_code; + u8 explanation_code; + u8 vendor_specific_code; +} __attribute__ ((packed)); + +struct fsf_status_read_buffer { + u32 status_type; + u32 status_subtype; + u32 length; + u32 res1; + struct fsf_queue_designator queue_designator; + u8 res2; + u8 d_id[3]; + u32 class; + u64 fcp_lun; + u8 res3[24]; + union { + u8 data[FSF_STATUS_READ_PAYLOAD_SIZE]; + u32 word[FSF_STATUS_READ_PAYLOAD_SIZE/sizeof(u32)]; + struct fsf_link_down_info link_down_info; + struct fsf_bit_error_payload bit_error; + } payload; +} __attribute__ ((packed)); + +struct fsf_qual_version_error { + u32 fsf_version; + u32 res1[3]; +} __attribute__ ((packed)); + +struct fsf_qual_sequence_error { + u32 exp_req_seq_no; + u32 res1[3]; +} __attribute__ ((packed)); + +struct fsf_qual_latency_info { + u32 channel_lat; + u32 fabric_lat; + u8 res1[8]; +} __attribute__ ((packed)); + +union fsf_prot_status_qual { + u32 word[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u32)]; + u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)]; + struct fsf_qual_version_error version_error; + struct fsf_qual_sequence_error sequence_error; + struct fsf_link_down_info link_down_info; + struct fsf_qual_latency_info latency_info; +} __attribute__ ((packed)); + +struct fsf_qtcb_prefix { + u64 req_id; + u32 qtcb_version; + u32 ulp_info; + u32 qtcb_type; + u32 req_seq_no; + u32 prot_status; + union fsf_prot_status_qual prot_status_qual; + u8 res1[20]; +} __attribute__ ((packed)); + +struct fsf_statistics_info { + u64 input_req; + u64 output_req; + u64 control_req; + u64 input_mb; + u64 output_mb; + u64 seconds_act; +} __attribute__ ((packed)); + +union fsf_status_qual { + u8 byte[FSF_STATUS_QUALIFIER_SIZE]; + u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)]; + u32 word[FSF_STATUS_QUALIFIER_SIZE / sizeof (u32)]; + u64 doubleword[FSF_STATUS_QUALIFIER_SIZE / sizeof(u64)]; + struct fsf_queue_designator fsf_queue_designator; + struct fsf_link_down_info link_down_info; +} __attribute__ ((packed)); + +struct fsf_qtcb_header { + u64 req_handle; + u32 fsf_command; + u32 res1; + u32 port_handle; + u32 lun_handle; + u32 res2; + u32 fsf_status; + union fsf_status_qual fsf_status_qual; + u8 res3[28]; + u16 log_start; + u16 log_length; + u8 res4[16]; +} __attribute__ ((packed)); + +#define FSF_PLOGI_MIN_LEN 112 + +#define FSF_FCP_CMND_SIZE 288 +#define FSF_FCP_RSP_SIZE 128 + +struct fsf_qtcb_bottom_io { + u32 data_direction; + u32 service_class; + u8 res1; + u8 data_prot_flags; + u16 app_tag_value; + u32 ref_tag_value; + u32 fcp_cmnd_length; + u32 data_block_length; + u32 prot_data_length; + u8 res2[4]; + union { + u8 byte[FSF_FCP_CMND_SIZE]; + struct fcp_cmnd iu; + } fcp_cmnd; + union { + u8 byte[FSF_FCP_RSP_SIZE]; + struct fcp_resp_with_ext iu; + } fcp_rsp; + u8 res3[64]; +} __attribute__ ((packed)); + +struct fsf_qtcb_bottom_support { + u32 operation_subtype; + u8 res1[13]; + u8 d_id[3]; + u32 option; + u64 fcp_lun; + u64 res2; + u64 req_handle; + u32 service_class; + u8 res3[3]; + u8 timeout; + u32 lun_access_info; + u8 res4[180]; + u32 els1_length; + u32 els2_length; + u32 req_buf_length; + u32 resp_buf_length; + u8 els[256]; +} __attribute__ ((packed)); + +#define ZFCP_FSF_TIMER_INT_MASK 0x3FFF + +struct fsf_qtcb_bottom_config { + u32 lic_version; + u32 feature_selection; + u32 high_qtcb_version; + u32 low_qtcb_version; + u32 max_qtcb_size; + u32 max_data_transfer_size; + u32 adapter_features; + u32 connection_features; + u32 fc_topology; + u32 fc_link_speed; /* one of ZFCP_FSF_PORTSPEED_* */ + u32 adapter_type; + u8 res0; + u8 peer_d_id[3]; + u16 status_read_buf_num; + u16 timer_interval; + u8 res2[9]; + u8 s_id[3]; + u8 nport_serv_param[128]; + u8 res3[8]; + u32 adapter_ports; + u32 hardware_version; + u8 serial_number[32]; + u8 plogi_payload[112]; + struct fsf_statistics_info stat_info; + u8 res4[112]; +} __attribute__ ((packed)); + +struct fsf_qtcb_bottom_port { + u64 wwpn; + u32 fc_port_id; + u32 port_type; + u32 port_state; + u32 class_of_service; /* should be 0x00000006 for class 2 and 3 */ + u8 supported_fc4_types[32]; /* should be 0x00000100 for scsi fcp */ + u8 active_fc4_types[32]; + u32 supported_speed; /* any combination of ZFCP_FSF_PORTSPEED_* */ + u32 maximum_frame_size; /* fixed value of 2112 */ + u64 seconds_since_last_reset; + u64 tx_frames; + u64 tx_words; + u64 rx_frames; + u64 rx_words; + u64 lip; /* 0 */ + u64 nos; /* currently 0 */ + u64 error_frames; /* currently 0 */ + u64 dumped_frames; /* currently 0 */ + u64 link_failure; + u64 loss_of_sync; + u64 loss_of_signal; + u64 psp_error_counts; + u64 invalid_tx_words; + u64 invalid_crcs; + u64 input_requests; + u64 output_requests; + u64 control_requests; + u64 input_mb; /* where 1 MByte == 1.000.000 Bytes */ + u64 output_mb; /* where 1 MByte == 1.000.000 Bytes */ + u8 cp_util; + u8 cb_util; + u8 a_util; + u8 res2[253]; +} __attribute__ ((packed)); + +union fsf_qtcb_bottom { + struct fsf_qtcb_bottom_io io; + struct fsf_qtcb_bottom_support support; + struct fsf_qtcb_bottom_config config; + struct fsf_qtcb_bottom_port port; +}; + +struct fsf_qtcb { + struct fsf_qtcb_prefix prefix; + struct fsf_qtcb_header header; + union fsf_qtcb_bottom bottom; + u8 log[FSF_QTCB_LOG_SIZE]; +} __attribute__ ((packed)); + +struct zfcp_blk_drv_data { +#define ZFCP_BLK_DRV_DATA_MAGIC 0x1 + u32 magic; +#define ZFCP_BLK_LAT_VALID 0x1 +#define ZFCP_BLK_REQ_ERROR 0x2 + u16 flags; + u8 inb_usage; + u8 outb_usage; + u64 channel_lat; + u64 fabric_lat; +} __attribute__ ((packed)); + +/** + * struct zfcp_fsf_ct_els - zfcp data for ct or els request + * @req: scatter-gather list for request + * @resp: scatter-gather list for response + * @handler: handler function (called for response to the request) + * @handler_data: data passed to handler function + * @port: Optional pointer to port for zfcp internal ELS (only test link ADISC) + * @status: used to pass error status to calling function + * @d_id: Destination ID of either open WKA port for CT or of D_ID for ELS + */ +struct zfcp_fsf_ct_els { + struct scatterlist *req; + struct scatterlist *resp; + void (*handler)(void *); + void *handler_data; + struct zfcp_port *port; + int status; + u32 d_id; +}; + +#endif /* FSF_H */ |