2012-05-15 22:34:28 +04:00
/*
* Copyright ( C ) 2004 - 2010 Vladislav Bolkhovitin < vst @ vlnb . net >
* Copyright ( C ) 2004 - 2005 Leonid Stoljar
* Copyright ( C ) 2006 Nathaniel Clark < nate @ misrule . us >
* Copyright ( C ) 2007 - 2010 ID7 Ltd .
*
* Forward port and refactoring to modern qla2xxx and target / configfs
*
* Copyright ( C ) 2010 - 2011 Nicholas A . Bellinger < nab @ kernel . org >
*
* Additional file for the target driver support .
*
* This program is free software ; you can redistribute it and / or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation ; either version 2
* of the License , or ( at your option ) any later version .
*
* This program is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
* GNU General Public License for more details .
*/
/*
* This is the global def file that is useful for including from the
* target portion .
*/
# ifndef __QLA_TARGET_H
# define __QLA_TARGET_H
# include "qla_def.h"
/*
* Must be changed on any change in any initiator visible interfaces or
* data in the target add - on
*/
# define QLA2XXX_TARGET_MAGIC 269
/*
* Must be changed on any change in any target visible interfaces or
* data in the initiator
*/
# define QLA2XXX_INITIATOR_MAGIC 57222
# define QLA2XXX_INI_MODE_STR_EXCLUSIVE "exclusive"
# define QLA2XXX_INI_MODE_STR_DISABLED "disabled"
# define QLA2XXX_INI_MODE_STR_ENABLED "enabled"
# define QLA2XXX_INI_MODE_EXCLUSIVE 0
# define QLA2XXX_INI_MODE_DISABLED 1
# define QLA2XXX_INI_MODE_ENABLED 2
# define QLA2XXX_COMMAND_COUNT_INIT 250
# define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250
/*
* Used to mark which completion handles ( for RIO Status ' s ) are for CTIO ' s
* vs . regular ( non - target ) info . This is checked for in
* qla2x00_process_response_queue ( ) to see if a handle coming back in a
* multi - complete should come to the tgt driver or be handled there by qla2xxx
*/
# define CTIO_COMPLETION_HANDLE_MARK BIT_29
# if (CTIO_COMPLETION_HANDLE_MARK <= MAX_OUTSTANDING_COMMANDS)
# error "CTIO_COMPLETION_HANDLE_MARK not larger than MAX_OUTSTANDING_COMMANDS"
# endif
# define HANDLE_IS_CTIO_COMP(h) (h & CTIO_COMPLETION_HANDLE_MARK)
/* Used to mark CTIO as intermediate */
# define CTIO_INTERMEDIATE_HANDLE_MARK BIT_30
# ifndef OF_SS_MODE_0
/*
* ISP target entries - Flags bit definitions .
*/
# define OF_SS_MODE_0 0
# define OF_SS_MODE_1 1
# define OF_SS_MODE_2 2
# define OF_SS_MODE_3 3
# define OF_EXPL_CONF BIT_5 /* Explicit Confirmation Requested */
# define OF_DATA_IN BIT_6 /* Data in to initiator */
/* (data from target to initiator) */
# define OF_DATA_OUT BIT_7 /* Data out from initiator */
/* (data from initiator to target) */
# define OF_NO_DATA (BIT_7 | BIT_6)
# define OF_INC_RC BIT_8 /* Increment command resource count */
# define OF_FAST_POST BIT_9 /* Enable mailbox fast posting. */
# define OF_CONF_REQ BIT_13 /* Confirmation Requested */
# define OF_TERM_EXCH BIT_14 /* Terminate exchange */
# define OF_SSTS BIT_15 /* Send SCSI status */
# endif
# ifndef QLA_TGT_DATASEGS_PER_CMD32
# define QLA_TGT_DATASEGS_PER_CMD32 3
# define QLA_TGT_DATASEGS_PER_CONT32 7
# define QLA_TGT_MAX_SG32(ql) \
( ( ( ql ) > 0 ) ? ( QLA_TGT_DATASEGS_PER_CMD32 + \
QLA_TGT_DATASEGS_PER_CONT32 * ( ( ql ) - 1 ) ) : 0 )
# define QLA_TGT_DATASEGS_PER_CMD64 2
# define QLA_TGT_DATASEGS_PER_CONT64 5
# define QLA_TGT_MAX_SG64(ql) \
( ( ( ql ) > 0 ) ? ( QLA_TGT_DATASEGS_PER_CMD64 + \
QLA_TGT_DATASEGS_PER_CONT64 * ( ( ql ) - 1 ) ) : 0 )
# endif
# ifndef QLA_TGT_DATASEGS_PER_CMD_24XX
# define QLA_TGT_DATASEGS_PER_CMD_24XX 1
# define QLA_TGT_DATASEGS_PER_CONT_24XX 5
# define QLA_TGT_MAX_SG_24XX(ql) \
( min ( 1270 , ( ( ql ) > 0 ) ? ( QLA_TGT_DATASEGS_PER_CMD_24XX + \
QLA_TGT_DATASEGS_PER_CONT_24XX * ( ( ql ) - 1 ) ) : 0 ) )
# endif
# endif
# define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha)) \
? le16_to_cpu ( ( iocb ) - > u . isp2x . target . extended ) \
: ( uint16_t ) ( iocb ) - > u . isp2x . target . id . standard )
# ifndef IMMED_NOTIFY_TYPE
# define IMMED_NOTIFY_TYPE 0x0D /* Immediate notify entry. */
/*
* ISP queue - immediate notify entry structure definition .
* This is sent by the ISP to the Target driver .
* This IOCB would have report of events sent by the
* initiator , that needs to be handled by the target
* driver immediately .
*/
struct imm_ntfy_from_isp {
uint8_t entry_type ; /* Entry type. */
uint8_t entry_count ; /* Entry count. */
uint8_t sys_define ; /* System defined. */
uint8_t entry_status ; /* Entry Status. */
union {
struct {
uint32_t sys_define_2 ; /* System defined. */
target_id_t target ;
uint16_t lun ;
uint8_t target_id ;
uint8_t reserved_1 ;
uint16_t status_modifier ;
uint16_t status ;
uint16_t task_flags ;
uint16_t seq_id ;
uint16_t srr_rx_id ;
uint32_t srr_rel_offs ;
uint16_t srr_ui ;
# define SRR_IU_DATA_IN 0x1
# define SRR_IU_DATA_OUT 0x5
# define SRR_IU_STATUS 0x7
uint16_t srr_ox_id ;
uint8_t reserved_2 [ 28 ] ;
} isp2x ;
struct {
uint32_t reserved ;
uint16_t nport_handle ;
uint16_t reserved_2 ;
uint16_t flags ;
# define NOTIFY24XX_FLAGS_GLOBAL_TPRLO BIT_1
# define NOTIFY24XX_FLAGS_PUREX_IOCB BIT_0
uint16_t srr_rx_id ;
uint16_t status ;
uint8_t status_subcode ;
uint8_t reserved_3 ;
uint32_t exchange_address ;
uint32_t srr_rel_offs ;
uint16_t srr_ui ;
uint16_t srr_ox_id ;
uint8_t reserved_4 [ 19 ] ;
uint8_t vp_index ;
uint32_t reserved_5 ;
uint8_t port_id [ 3 ] ;
uint8_t reserved_6 ;
} isp24 ;
} u ;
uint16_t reserved_7 ;
uint16_t ox_id ;
} __packed ;
# endif
# ifndef NOTIFY_ACK_TYPE
# define NOTIFY_ACK_TYPE 0x0E /* Notify acknowledge entry. */
/*
* ISP queue - notify acknowledge entry structure definition .
* This is sent to the ISP from the target driver .
*/
struct nack_to_isp {
uint8_t entry_type ; /* Entry type. */
uint8_t entry_count ; /* Entry count. */
uint8_t sys_define ; /* System defined. */
uint8_t entry_status ; /* Entry Status. */
union {
struct {
uint32_t sys_define_2 ; /* System defined. */
target_id_t target ;
uint8_t target_id ;
uint8_t reserved_1 ;
uint16_t flags ;
uint16_t resp_code ;
uint16_t status ;
uint16_t task_flags ;
uint16_t seq_id ;
uint16_t srr_rx_id ;
uint32_t srr_rel_offs ;
uint16_t srr_ui ;
uint16_t srr_flags ;
uint16_t srr_reject_code ;
uint8_t srr_reject_vendor_uniq ;
uint8_t srr_reject_code_expl ;
uint8_t reserved_2 [ 24 ] ;
} isp2x ;
struct {
uint32_t handle ;
uint16_t nport_handle ;
uint16_t reserved_1 ;
uint16_t flags ;
uint16_t srr_rx_id ;
uint16_t status ;
uint8_t status_subcode ;
uint8_t reserved_3 ;
uint32_t exchange_address ;
uint32_t srr_rel_offs ;
uint16_t srr_ui ;
uint16_t srr_flags ;
uint8_t reserved_4 [ 19 ] ;
uint8_t vp_index ;
uint8_t srr_reject_vendor_uniq ;
uint8_t srr_reject_code_expl ;
uint8_t srr_reject_code ;
uint8_t reserved_5 [ 5 ] ;
} isp24 ;
} u ;
uint8_t reserved [ 2 ] ;
uint16_t ox_id ;
} __packed ;
# define NOTIFY_ACK_SRR_FLAGS_ACCEPT 0
# define NOTIFY_ACK_SRR_FLAGS_REJECT 1
# define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM 0x9
# define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL 0
# define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA 0x2a
# define NOTIFY_ACK_SUCCESS 0x01
# endif
# ifndef ACCEPT_TGT_IO_TYPE
# define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */
# endif
# ifndef CONTINUE_TGT_IO_TYPE
# define CONTINUE_TGT_IO_TYPE 0x17
/*
* ISP queue - Continue Target I / O ( CTIO ) entry for status mode 0 structure .
* This structure is sent to the ISP 2 xxx from target driver .
*/
struct ctio_to_2xxx {
uint8_t entry_type ; /* Entry type. */
uint8_t entry_count ; /* Entry count. */
uint8_t sys_define ; /* System defined. */
uint8_t entry_status ; /* Entry Status. */
uint32_t handle ; /* System defined handle */
target_id_t target ;
uint16_t rx_id ;
uint16_t flags ;
uint16_t status ;
uint16_t timeout ; /* 0 = 30 seconds, 0xFFFF = disable */
uint16_t dseg_count ; /* Data segment count. */
uint32_t relative_offset ;
uint32_t residual ;
uint16_t reserved_1 [ 3 ] ;
uint16_t scsi_status ;
uint32_t transfer_length ;
uint32_t dseg_0_address ; /* Data segment 0 address. */
uint32_t dseg_0_length ; /* Data segment 0 length. */
uint32_t dseg_1_address ; /* Data segment 1 address. */
uint32_t dseg_1_length ; /* Data segment 1 length. */
uint32_t dseg_2_address ; /* Data segment 2 address. */
uint32_t dseg_2_length ; /* Data segment 2 length. */
} __packed ;
# define ATIO_PATH_INVALID 0x07
# define ATIO_CANT_PROV_CAP 0x16
# define ATIO_CDB_VALID 0x3D
# define ATIO_EXEC_READ BIT_1
# define ATIO_EXEC_WRITE BIT_0
# endif
# ifndef CTIO_A64_TYPE
# define CTIO_A64_TYPE 0x1F
# define CTIO_SUCCESS 0x01
# define CTIO_ABORTED 0x02
# define CTIO_INVALID_RX_ID 0x08
# define CTIO_TIMEOUT 0x0B
# define CTIO_LIP_RESET 0x0E
# define CTIO_TARGET_RESET 0x17
# define CTIO_PORT_UNAVAILABLE 0x28
# define CTIO_PORT_LOGGED_OUT 0x29
# define CTIO_PORT_CONF_CHANGED 0x2A
# define CTIO_SRR_RECEIVED 0x45
# endif
# ifndef CTIO_RET_TYPE
# define CTIO_RET_TYPE 0x17 /* CTIO return entry */
# define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */
struct fcp_hdr {
uint8_t r_ctl ;
uint8_t d_id [ 3 ] ;
uint8_t cs_ctl ;
uint8_t s_id [ 3 ] ;
uint8_t type ;
uint8_t f_ctl [ 3 ] ;
uint8_t seq_id ;
uint8_t df_ctl ;
uint16_t seq_cnt ;
uint16_t ox_id ;
uint16_t rx_id ;
uint32_t parameter ;
} __packed ;
struct fcp_hdr_le {
uint8_t d_id [ 3 ] ;
uint8_t r_ctl ;
uint8_t s_id [ 3 ] ;
uint8_t cs_ctl ;
uint8_t f_ctl [ 3 ] ;
uint8_t type ;
uint16_t seq_cnt ;
uint8_t df_ctl ;
uint8_t seq_id ;
uint16_t rx_id ;
uint16_t ox_id ;
uint32_t parameter ;
} __packed ;
# define F_CTL_EXCH_CONTEXT_RESP BIT_23
# define F_CTL_SEQ_CONTEXT_RESIP BIT_22
# define F_CTL_LAST_SEQ BIT_20
# define F_CTL_END_SEQ BIT_19
# define F_CTL_SEQ_INITIATIVE BIT_16
# define R_CTL_BASIC_LINK_SERV 0x80
# define R_CTL_B_ACC 0x4
# define R_CTL_B_RJT 0x5
struct atio7_fcp_cmnd {
uint64_t lun ;
uint8_t cmnd_ref ;
uint8_t task_attr : 3 ;
uint8_t reserved : 5 ;
uint8_t task_mgmt_flags ;
# define FCP_CMND_TASK_MGMT_CLEAR_ACA 6
# define FCP_CMND_TASK_MGMT_TARGET_RESET 5
# define FCP_CMND_TASK_MGMT_LU_RESET 4
# define FCP_CMND_TASK_MGMT_CLEAR_TASK_SET 2
# define FCP_CMND_TASK_MGMT_ABORT_TASK_SET 1
uint8_t wrdata : 1 ;
uint8_t rddata : 1 ;
uint8_t add_cdb_len : 6 ;
uint8_t cdb [ 16 ] ;
/*
* add_cdb is optional and can absent from struct atio7_fcp_cmnd . Size 4
* only to make sizeof ( struct atio7_fcp_cmnd ) be as expected by
* BUILD_BUG_ON in qlt_init ( ) .
*/
uint8_t add_cdb [ 4 ] ;
/* uint32_t data_length; */
} __packed ;
/*
* ISP queue - Accept Target I / O ( ATIO ) type entry IOCB structure .
* This is sent from the ISP to the target driver .
*/
struct atio_from_isp {
union {
struct {
uint16_t entry_hdr ;
uint8_t sys_define ; /* System defined. */
uint8_t entry_status ; /* Entry Status. */
uint32_t sys_define_2 ; /* System defined. */
target_id_t target ;
uint16_t rx_id ;
uint16_t flags ;
uint16_t status ;
uint8_t command_ref ;
uint8_t task_codes ;
uint8_t task_flags ;
uint8_t execution_codes ;
uint8_t cdb [ MAX_CMDSZ ] ;
uint32_t data_length ;
uint16_t lun ;
uint8_t initiator_port_name [ WWN_SIZE ] ; /* on qla23xx */
uint16_t reserved_32 [ 6 ] ;
uint16_t ox_id ;
} isp2x ;
struct {
uint16_t entry_hdr ;
uint8_t fcp_cmnd_len_low ;
uint8_t fcp_cmnd_len_high : 4 ;
uint8_t attr : 4 ;
uint32_t exchange_addr ;
# define ATIO_EXCHANGE_ADDRESS_UNKNOWN 0xFFFFFFFF
struct fcp_hdr fcp_hdr ;
struct atio7_fcp_cmnd fcp_cmnd ;
} isp24 ;
struct {
uint8_t entry_type ; /* Entry type. */
uint8_t entry_count ; /* Entry count. */
uint8_t data [ 58 ] ;
uint32_t signature ;
# define ATIO_PROCESSED 0xDEADDEAD /* Signature */
} raw ;
} u ;
} __packed ;
# define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */
/*
* ISP queue - Continue Target I / O ( ATIO ) type 7 entry ( for 24 xx ) structure .
* This structure is sent to the ISP 24 xx from the target driver .
*/
struct ctio7_to_24xx {
uint8_t entry_type ; /* Entry type. */
uint8_t entry_count ; /* Entry count. */
uint8_t sys_define ; /* System defined. */
uint8_t entry_status ; /* Entry Status. */
uint32_t handle ; /* System defined handle */
uint16_t nport_handle ;
# define CTIO7_NHANDLE_UNRECOGNIZED 0xFFFF
uint16_t timeout ;
uint16_t dseg_count ; /* Data segment count. */
uint8_t vp_index ;
uint8_t add_flags ;
uint8_t initiator_id [ 3 ] ;
uint8_t reserved ;
uint32_t exchange_addr ;
union {
struct {
uint16_t reserved1 ;
uint16_t flags ;
uint32_t residual ;
uint16_t ox_id ;
uint16_t scsi_status ;
uint32_t relative_offset ;
uint32_t reserved2 ;
uint32_t transfer_length ;
uint32_t reserved3 ;
/* Data segment 0 address. */
uint32_t dseg_0_address [ 2 ] ;
/* Data segment 0 length. */
uint32_t dseg_0_length ;
} status0 ;
struct {
uint16_t sense_length ;
uint16_t flags ;
uint32_t residual ;
uint16_t ox_id ;
uint16_t scsi_status ;
uint16_t response_len ;
uint16_t reserved ;
uint8_t sense_data [ 24 ] ;
} status1 ;
} u ;
} __packed ;
/*
* ISP queue - CTIO type 7 from ISP 24 xx to target driver
* returned entry structure .
*/
struct ctio7_from_24xx {
uint8_t entry_type ; /* Entry type. */
uint8_t entry_count ; /* Entry count. */
uint8_t sys_define ; /* System defined. */
uint8_t entry_status ; /* Entry Status. */
uint32_t handle ; /* System defined handle */
uint16_t status ;
uint16_t timeout ;
uint16_t dseg_count ; /* Data segment count. */
uint8_t vp_index ;
uint8_t reserved1 [ 5 ] ;
uint32_t exchange_address ;
uint16_t reserved2 ;
uint16_t flags ;
uint32_t residual ;
uint16_t ox_id ;
uint16_t reserved3 ;
uint32_t relative_offset ;
uint8_t reserved4 [ 24 ] ;
} __packed ;
/* CTIO7 flags values */
# define CTIO7_FLAGS_SEND_STATUS BIT_15
# define CTIO7_FLAGS_TERMINATE BIT_14
# define CTIO7_FLAGS_CONFORM_REQ BIT_13
# define CTIO7_FLAGS_DONT_RET_CTIO BIT_8
# define CTIO7_FLAGS_STATUS_MODE_0 0
# define CTIO7_FLAGS_STATUS_MODE_1 BIT_6
# define CTIO7_FLAGS_EXPLICIT_CONFORM BIT_5
# define CTIO7_FLAGS_CONFIRM_SATISF BIT_4
# define CTIO7_FLAGS_DSD_PTR BIT_2
# define CTIO7_FLAGS_DATA_IN BIT_1
# define CTIO7_FLAGS_DATA_OUT BIT_0
# define ELS_PLOGI 0x3
# define ELS_FLOGI 0x4
# define ELS_LOGO 0x5
# define ELS_PRLI 0x20
# define ELS_PRLO 0x21
# define ELS_TPRLO 0x24
# define ELS_PDISC 0x50
# define ELS_ADISC 0x52
/*
* ISP queue - ABTS received / response entries structure definition for 24 xx .
*/
# define ABTS_RECV_24XX 0x54 /* ABTS received (for 24xx) */
# define ABTS_RESP_24XX 0x55 /* ABTS responce (for 24xx) */
/*
* ISP queue - ABTS received IOCB entry structure definition for 24 xx .
* The ABTS BLS received from the wire is sent to the
* target driver by the ISP 24 xx .
* The IOCB is placed on the response queue .
*/
struct abts_recv_from_24xx {
uint8_t entry_type ; /* Entry type. */
uint8_t entry_count ; /* Entry count. */
uint8_t sys_define ; /* System defined. */
uint8_t entry_status ; /* Entry Status. */
uint8_t reserved_1 [ 6 ] ;
uint16_t nport_handle ;
uint8_t reserved_2 [ 2 ] ;
uint8_t vp_index ;
uint8_t reserved_3 : 4 ;
uint8_t sof_type : 4 ;
uint32_t exchange_address ;
struct fcp_hdr_le fcp_hdr_le ;
uint8_t reserved_4 [ 16 ] ;
uint32_t exchange_addr_to_abort ;
} __packed ;
# define ABTS_PARAM_ABORT_SEQ BIT_0
struct ba_acc_le {
uint16_t reserved ;
uint8_t seq_id_last ;
uint8_t seq_id_valid ;
# define SEQ_ID_VALID 0x80
# define SEQ_ID_INVALID 0x00
uint16_t rx_id ;
uint16_t ox_id ;
uint16_t high_seq_cnt ;
uint16_t low_seq_cnt ;
} __packed ;
struct ba_rjt_le {
uint8_t vendor_uniq ;
uint8_t reason_expl ;
uint8_t reason_code ;
# define BA_RJT_REASON_CODE_INVALID_COMMAND 0x1
# define BA_RJT_REASON_CODE_UNABLE_TO_PERFORM 0x9
uint8_t reserved ;
} __packed ;
/*
* ISP queue - ABTS Response IOCB entry structure definition for 24 xx .
* The ABTS response to the ABTS received is sent by the
* target driver to the ISP 24 xx .
* The IOCB is placed on the request queue .
*/
struct abts_resp_to_24xx {
uint8_t entry_type ; /* Entry type. */
uint8_t entry_count ; /* Entry count. */
uint8_t sys_define ; /* System defined. */
uint8_t entry_status ; /* Entry Status. */
uint32_t handle ;
uint16_t reserved_1 ;
uint16_t nport_handle ;
uint16_t control_flags ;
# define ABTS_CONTR_FLG_TERM_EXCHG BIT_0
uint8_t vp_index ;
uint8_t reserved_3 : 4 ;
uint8_t sof_type : 4 ;
uint32_t exchange_address ;
struct fcp_hdr_le fcp_hdr_le ;
union {
struct ba_acc_le ba_acct ;
struct ba_rjt_le ba_rjt ;
} __packed payload ;
uint32_t reserved_4 ;
uint32_t exchange_addr_to_abort ;
} __packed ;
/*
* ISP queue - ABTS Response IOCB from ISP24xx Firmware entry structure .
* The ABTS response with completion status to the ABTS response
* ( sent by the target driver to the ISP 24 xx ) is sent by the
* ISP24xx firmware to the target driver .
* The IOCB is placed on the response queue .
*/
struct abts_resp_from_24xx_fw {
uint8_t entry_type ; /* Entry type. */
uint8_t entry_count ; /* Entry count. */
uint8_t sys_define ; /* System defined. */
uint8_t entry_status ; /* Entry Status. */
uint32_t handle ;
uint16_t compl_status ;
# define ABTS_RESP_COMPL_SUCCESS 0
# define ABTS_RESP_COMPL_SUBCODE_ERROR 0x31
uint16_t nport_handle ;
uint16_t reserved_1 ;
uint8_t reserved_2 ;
uint8_t reserved_3 : 4 ;
uint8_t sof_type : 4 ;
uint32_t exchange_address ;
struct fcp_hdr_le fcp_hdr_le ;
uint8_t reserved_4 [ 8 ] ;
uint32_t error_subcode1 ;
# define ABTS_RESP_SUBCODE_ERR_ABORTED_EXCH_NOT_TERM 0x1E
uint32_t error_subcode2 ;
uint32_t exchange_addr_to_abort ;
} __packed ;
/********************************************************************\
* Type Definitions used by initiator & target halves
\ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
struct qla_tgt_mgmt_cmd ;
struct qla_tgt_sess ;
/*
* This structure provides a template of function calls that the
* target driver ( from within qla_target . c ) can issue to the
* target module ( tcm_qla2xxx ) .
*/
struct qla_tgt_func_tmpl {
int ( * handle_cmd ) ( struct scsi_qla_host * , struct qla_tgt_cmd * ,
unsigned char * , uint32_t , int , int , int ) ;
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void ( * handle_data ) ( struct qla_tgt_cmd * ) ;
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int ( * handle_tmr ) ( struct qla_tgt_mgmt_cmd * , uint32_t , uint8_t ,
uint32_t ) ;
void ( * free_cmd ) ( struct qla_tgt_cmd * ) ;
void ( * free_mcmd ) ( struct qla_tgt_mgmt_cmd * ) ;
void ( * free_session ) ( struct qla_tgt_sess * ) ;
int ( * check_initiator_node_acl ) ( struct scsi_qla_host * , unsigned char * ,
void * , uint8_t * , uint16_t ) ;
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void ( * update_sess ) ( struct qla_tgt_sess * , port_id_t , uint16_t , bool ) ;
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struct qla_tgt_sess * ( * find_sess_by_loop_id ) ( struct scsi_qla_host * ,
const uint16_t ) ;
struct qla_tgt_sess * ( * find_sess_by_s_id ) ( struct scsi_qla_host * ,
const uint8_t * ) ;
void ( * clear_nacl_from_fcport_map ) ( struct qla_tgt_sess * ) ;
void ( * put_sess ) ( struct qla_tgt_sess * ) ;
void ( * shutdown_sess ) ( struct qla_tgt_sess * ) ;
} ;
int qla2x00_wait_for_hba_online ( struct scsi_qla_host * ) ;
# include <target/target_core_base.h>
# define QLA_TGT_TIMEOUT 10 /* in seconds */
# define QLA_TGT_MAX_HW_PENDING_TIME 60 /* in seconds */
/* Immediate notify status constants */
# define IMM_NTFY_LIP_RESET 0x000E
# define IMM_NTFY_LIP_LINK_REINIT 0x000F
# define IMM_NTFY_IOCB_OVERFLOW 0x0016
# define IMM_NTFY_ABORT_TASK 0x0020
# define IMM_NTFY_PORT_LOGOUT 0x0029
# define IMM_NTFY_PORT_CONFIG 0x002A
# define IMM_NTFY_GLBL_TPRLO 0x002D
# define IMM_NTFY_GLBL_LOGO 0x002E
# define IMM_NTFY_RESOURCE 0x0034
# define IMM_NTFY_MSG_RX 0x0036
# define IMM_NTFY_SRR 0x0045
# define IMM_NTFY_ELS 0x0046
/* Immediate notify task flags */
# define IMM_NTFY_TASK_MGMT_SHIFT 8
# define QLA_TGT_CLEAR_ACA 0x40
# define QLA_TGT_TARGET_RESET 0x20
# define QLA_TGT_LUN_RESET 0x10
# define QLA_TGT_CLEAR_TS 0x04
# define QLA_TGT_ABORT_TS 0x02
# define QLA_TGT_ABORT_ALL_SESS 0xFFFF
# define QLA_TGT_ABORT_ALL 0xFFFE
# define QLA_TGT_NEXUS_LOSS_SESS 0xFFFD
# define QLA_TGT_NEXUS_LOSS 0xFFFC
/* Notify Acknowledge flags */
# define NOTIFY_ACK_RES_COUNT BIT_8
# define NOTIFY_ACK_CLEAR_LIP_RESET BIT_5
# define NOTIFY_ACK_TM_RESP_CODE_VALID BIT_4
/* Command's states */
# define QLA_TGT_STATE_NEW 0 /* New command + target processing */
# define QLA_TGT_STATE_NEED_DATA 1 /* target needs data to continue */
# define QLA_TGT_STATE_DATA_IN 2 /* Data arrived + target processing */
# define QLA_TGT_STATE_PROCESSED 3 /* target done processing */
# define QLA_TGT_STATE_ABORTED 4 /* Command aborted */
/* Special handles */
# define QLA_TGT_NULL_HANDLE 0
# define QLA_TGT_SKIP_HANDLE (0xFFFFFFFF & ~CTIO_COMPLETION_HANDLE_MARK)
/* ATIO task_codes field */
# define ATIO_SIMPLE_QUEUE 0
# define ATIO_HEAD_OF_QUEUE 1
# define ATIO_ORDERED_QUEUE 2
# define ATIO_ACA_QUEUE 4
# define ATIO_UNTAGGED 5
/* TM failed response codes, see FCP (9.4.11 FCP_RSP_INFO) */
# define FC_TM_SUCCESS 0
# define FC_TM_BAD_FCP_DATA 1
# define FC_TM_BAD_CMD 2
# define FC_TM_FCP_DATA_MISMATCH 3
# define FC_TM_REJECT 4
# define FC_TM_FAILED 5
/*
* Error code of qlt_pre_xmit_response ( ) meaning that cmd ' s exchange was
* terminated , so no more actions is needed and success should be returned
* to target .
*/
# define QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED 0x1717
# if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G)
# define pci_dma_lo32(a) (a & 0xffffffff)
# define pci_dma_hi32(a) ((((a) >> 16)>>16) & 0xffffffff)
# else
# define pci_dma_lo32(a) (a & 0xffffffff)
# define pci_dma_hi32(a) 0
# endif
# define QLA_TGT_SENSE_VALID(sense) ((sense != NULL) && \
( ( ( const uint8_t * ) ( sense ) ) [ 0 ] & 0x70 ) = = 0x70 )
struct qla_port_24xx_data {
uint8_t port_name [ WWN_SIZE ] ;
uint16_t loop_id ;
uint16_t reserved ;
} ;
struct qla_tgt {
struct scsi_qla_host * vha ;
struct qla_hw_data * ha ;
/*
* To sync between IRQ handlers and qlt_target_release ( ) . Needed ,
* because req_pkt ( ) can drop / reaquire HW lock inside . Protected by
* HW lock .
*/
int irq_cmd_count ;
int datasegs_per_cmd , datasegs_per_cont , sg_tablesize ;
/* Target's flags, serialized by pha->hardware_lock */
unsigned int tgt_enable_64bit_addr : 1 ; /* 64-bits PCI addr enabled */
unsigned int link_reinit_iocb_pending : 1 ;
/*
* Protected by tgt_mutex AND hardware_lock for writing and tgt_mutex
* OR hardware_lock for reading .
*/
int tgt_stop ; /* the target mode driver is being stopped */
int tgt_stopped ; /* the target mode driver has been stopped */
/* Count of sessions refering qla_tgt. Protected by hardware_lock. */
int sess_count ;
/* Protected by hardware_lock. Addition also protected by tgt_mutex. */
struct list_head sess_list ;
/* Protected by hardware_lock */
struct list_head del_sess_list ;
struct delayed_work sess_del_work ;
spinlock_t sess_work_lock ;
struct list_head sess_works_list ;
struct work_struct sess_work ;
struct imm_ntfy_from_isp link_reinit_iocb ;
wait_queue_head_t waitQ ;
int notify_ack_expected ;
int abts_resp_expected ;
int modify_lun_expected ;
int ctio_srr_id ;
int imm_srr_id ;
spinlock_t srr_lock ;
struct list_head srr_ctio_list ;
struct list_head srr_imm_list ;
struct work_struct srr_work ;
atomic_t tgt_global_resets_count ;
struct list_head tgt_list_entry ;
} ;
/*
* Equivilant to IT Nexus ( Initiator - Target )
*/
struct qla_tgt_sess {
uint16_t loop_id ;
port_id_t s_id ;
unsigned int conf_compl_supported : 1 ;
unsigned int deleted : 1 ;
unsigned int local : 1 ;
struct se_session * se_sess ;
struct scsi_qla_host * vha ;
struct qla_tgt * tgt ;
struct list_head sess_list_entry ;
unsigned long expires ;
struct list_head del_list_entry ;
uint8_t port_name [ WWN_SIZE ] ;
struct work_struct free_work ;
} ;
struct qla_tgt_cmd {
struct qla_tgt_sess * sess ;
int state ;
struct se_cmd se_cmd ;
struct work_struct free_work ;
struct work_struct work ;
/* Sense buffer that will be mapped into outgoing status */
unsigned char sense_buffer [ TRANSPORT_SENSE_BUFFER ] ;
/* to save extra sess dereferences */
unsigned int conf_compl_supported : 1 ;
unsigned int sg_mapped : 1 ;
unsigned int free_sg : 1 ;
unsigned int aborted : 1 ; /* Needed in case of SRR */
unsigned int write_data_transferred : 1 ;
struct scatterlist * sg ; /* cmd data buffer SG vector */
int sg_cnt ; /* SG segments count */
int bufflen ; /* cmd buffer length */
int offset ;
uint32_t tag ;
uint32_t unpacked_lun ;
enum dma_data_direction dma_data_direction ;
uint16_t loop_id ; /* to save extra sess dereferences */
struct qla_tgt * tgt ; /* to save extra sess dereferences */
struct scsi_qla_host * vha ;
struct list_head cmd_list ;
struct atio_from_isp atio ;
} ;
struct qla_tgt_sess_work_param {
struct list_head sess_works_list_entry ;
# define QLA_TGT_SESS_WORK_ABORT 1
# define QLA_TGT_SESS_WORK_TM 2
int type ;
union {
struct abts_recv_from_24xx abts ;
struct imm_ntfy_from_isp tm_iocb ;
struct atio_from_isp tm_iocb2 ;
} ;
} ;
struct qla_tgt_mgmt_cmd {
uint8_t tmr_func ;
uint8_t fc_tm_rsp ;
struct qla_tgt_sess * sess ;
struct se_cmd se_cmd ;
struct work_struct free_work ;
unsigned int flags ;
# define QLA24XX_MGMT_SEND_NACK 1
union {
struct atio_from_isp atio ;
struct imm_ntfy_from_isp imm_ntfy ;
struct abts_recv_from_24xx abts ;
} __packed orig_iocb ;
} ;
struct qla_tgt_prm {
struct qla_tgt_cmd * cmd ;
struct qla_tgt * tgt ;
void * pkt ;
struct scatterlist * sg ; /* cmd data buffer SG vector */
int seg_cnt ;
int req_cnt ;
uint16_t rq_result ;
uint16_t scsi_status ;
unsigned char * sense_buffer ;
int sense_buffer_len ;
int residual ;
int add_status_pkt ;
} ;
struct qla_tgt_srr_imm {
struct list_head srr_list_entry ;
int srr_id ;
struct imm_ntfy_from_isp imm_ntfy ;
} ;
struct qla_tgt_srr_ctio {
struct list_head srr_list_entry ;
int srr_id ;
struct qla_tgt_cmd * cmd ;
} ;
# define QLA_TGT_XMIT_DATA 1
# define QLA_TGT_XMIT_STATUS 2
# define QLA_TGT_XMIT_ALL (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA)
extern struct qla_tgt_data qla_target ;
/*
* Internal function prototypes
*/
void qlt_disable_vha ( struct scsi_qla_host * ) ;
/*
* Function prototypes for qla_target . c logic used by qla2xxx LLD code .
*/
extern int qlt_add_target ( struct qla_hw_data * , struct scsi_qla_host * ) ;
extern int qlt_remove_target ( struct qla_hw_data * , struct scsi_qla_host * ) ;
extern int qlt_lport_register ( struct qla_tgt_func_tmpl * , u64 ,
int ( * callback ) ( struct scsi_qla_host * ) , void * ) ;
extern void qlt_lport_deregister ( struct scsi_qla_host * ) ;
extern void qlt_unreg_sess ( struct qla_tgt_sess * ) ;
extern void qlt_fc_port_added ( struct scsi_qla_host * , fc_port_t * ) ;
extern void qlt_fc_port_deleted ( struct scsi_qla_host * , fc_port_t * ) ;
extern void qlt_set_mode ( struct scsi_qla_host * ha ) ;
extern void qlt_clear_mode ( struct scsi_qla_host * ha ) ;
extern int __init qlt_init ( void ) ;
extern void qlt_exit ( void ) ;
extern void qlt_update_vp_map ( struct scsi_qla_host * , int ) ;
/*
* This macro is used during early initializations when host - > active_mode
* is not set . Right now , ha value is ignored .
*/
# define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED)
static inline bool qla_tgt_mode_enabled ( struct scsi_qla_host * ha )
{
return ha - > host - > active_mode & MODE_TARGET ;
}
static inline bool qla_ini_mode_enabled ( struct scsi_qla_host * ha )
{
return ha - > host - > active_mode & MODE_INITIATOR ;
}
static inline void qla_reverse_ini_mode ( struct scsi_qla_host * ha )
{
if ( ha - > host - > active_mode & MODE_INITIATOR )
ha - > host - > active_mode & = ~ MODE_INITIATOR ;
else
ha - > host - > active_mode | = MODE_INITIATOR ;
}
/*
* Exported symbols from qla_target . c LLD logic used by qla2xxx code . .
*/
extern void qlt_24xx_atio_pkt_all_vps ( struct scsi_qla_host * ,
struct atio_from_isp * ) ;
extern void qlt_response_pkt_all_vps ( struct scsi_qla_host * , response_t * ) ;
extern int qlt_rdy_to_xfer ( struct qla_tgt_cmd * ) ;
extern int qlt_xmit_response ( struct qla_tgt_cmd * , int , uint8_t ) ;
extern void qlt_xmit_tm_rsp ( struct qla_tgt_mgmt_cmd * ) ;
extern void qlt_free_mcmd ( struct qla_tgt_mgmt_cmd * ) ;
extern void qlt_free_cmd ( struct qla_tgt_cmd * cmd ) ;
extern void qlt_ctio_completion ( struct scsi_qla_host * , uint32_t ) ;
extern void qlt_async_event ( uint16_t , struct scsi_qla_host * , uint16_t * ) ;
extern void qlt_enable_vha ( struct scsi_qla_host * ) ;
extern void qlt_vport_create ( struct scsi_qla_host * , struct qla_hw_data * ) ;
extern void qlt_rff_id ( struct scsi_qla_host * , struct ct_sns_req * ) ;
extern void qlt_init_atio_q_entries ( struct scsi_qla_host * ) ;
extern void qlt_24xx_process_atio_queue ( struct scsi_qla_host * ) ;
extern void qlt_24xx_config_rings ( struct scsi_qla_host * ,
device_reg_t __iomem * ) ;
extern void qlt_24xx_config_nvram_stage1 ( struct scsi_qla_host * ,
struct nvram_24xx * ) ;
extern void qlt_24xx_config_nvram_stage2 ( struct scsi_qla_host * ,
struct init_cb_24xx * ) ;
extern int qlt_24xx_process_response_error ( struct scsi_qla_host * ,
struct sts_entry_24xx * ) ;
extern void qlt_modify_vp_config ( struct scsi_qla_host * ,
struct vp_config_entry_24xx * ) ;
extern void qlt_probe_one_stage1 ( struct scsi_qla_host * , struct qla_hw_data * ) ;
extern int qlt_mem_alloc ( struct qla_hw_data * ) ;
extern void qlt_mem_free ( struct qla_hw_data * ) ;
extern void qlt_stop_phase1 ( struct qla_tgt * ) ;
extern void qlt_stop_phase2 ( struct qla_tgt * ) ;
# endif /* __QLA_TARGET_H */
