drivers/s390/scsi/zfcp_fsf.h - third_party/kernel - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  * zfcp device driver
  *
  * Interface to the FSF support functions.
  *
  * Copyright IBM Corp. 2002, 2017
  */

 #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;
 	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;	/* 0x0001 for 1 GBit/s or 0x0002 for 2 GBit/s */
 	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 */
	/* SPDX-License-Identifier: GPL-2.0 */
	/*
	* zfcp device driver
	*
	* Interface to the FSF support functions.
	*
	* Copyright IBM Corp. 2002, 2017
	*/

	#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;
	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; /* 0x0001 for 1 GBit/s or 0x0002 for 2 GBit/s */
	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 */