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linux_dsm_epyc7002/drivers/scsi/qla2xxx/qla_target.h
Christoph Hellwig e3dc0e3165 tcm_qla2xxx: introduce a private sess_kref 
This stops abusing the common sess_kref to overload it for private
usage, which allows removing the shutdown_session method as well.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2016-05-10 01:19:33 -07:00

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/*
* 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 <= DEFAULT_OUTSTANDING_COMMANDS)
#error "CTIO_COMPLETION_HANDLE_MARK not larger than "
"DEFAULT_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 fw_handle;
uint32_t exchange_address;
uint32_t srr_rel_offs;
uint16_t srr_ui;
uint16_t srr_ox_id;
union {
struct {
uint8_t node_name[8];
} plogi; /* PLOGI/ADISC/PDISC */
struct {
/* PRLI word 3 bit 0-15 */
uint16_t wd3_lo;
uint8_t resv0[6];
} prli;
struct {
uint8_t port_id[3];
uint8_t resv1;
uint16_t nport_handle;
uint16_t resv2;
} req_els;
} u;
uint8_t port_name[8];
uint8_t resv3[3];
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 fw_handle;
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_FLAGS_TERMINATE BIT_3
#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 2xxx 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_DIF_ERROR 0x0C /* DIF error detected */
#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;
__be16 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 24xx) structure.
* This structure is sent to the ISP 24xx 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;
__le16 flags;
uint32_t residual;
__le16 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;
__le16 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 24xx 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_STATUS_MODE_2 BIT_7
#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 /* data to initiator */
#define CTIO7_FLAGS_DATA_OUT BIT_0 /* data from initiator */
#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
/*
*CTIO Type CRC_2 IOCB
*/
struct ctio_crc2_to_fw {
uint8_t entry_type; /* Entry type. */
#define CTIO_CRC2 0x7A
uint8_t entry_count; /* Entry count. */
uint8_t sys_define; /* System defined. */
uint8_t entry_status; /* Entry Status. */
uint32_t handle; /* System handle. */
uint16_t nport_handle; /* N_PORT handle. */
__le16 timeout; /* Command timeout. */
uint16_t dseg_count; /* Data segment count. */
uint8_t vp_index;
uint8_t add_flags; /* additional flags */
#define CTIO_CRC2_AF_DIF_DSD_ENA BIT_3
uint8_t initiator_id[3]; /* initiator ID */
uint8_t reserved1;
uint32_t exchange_addr; /* rcv exchange address */
uint16_t reserved2;
__le16 flags; /* refer to CTIO7 flags values */
uint32_t residual;
__le16 ox_id;
uint16_t scsi_status;
__le32 relative_offset;
uint32_t reserved5;
__le32 transfer_length; /* total fc transfer length */
uint32_t reserved6;
__le32 crc_context_address[2];/* Data segment address. */
uint16_t crc_context_len; /* Data segment length. */
uint16_t reserved_1; /* MUST be set to 0. */
} __packed;
/* CTIO Type CRC_x Status IOCB */
struct ctio_crc_from_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; /* System handle. */
uint16_t status;
uint16_t timeout; /* Command timeout. */
uint16_t dseg_count; /* Data segment count. */
uint32_t reserved1;
uint16_t state_flags;
#define CTIO_CRC_SF_DIF_CHOPPED BIT_4
uint32_t exchange_address; /* rcv exchange address */
uint16_t reserved2;
uint16_t flags;
uint32_t resid_xfer_length;
uint16_t ox_id;
uint8_t reserved3[12];
uint16_t runt_guard; /* reported runt blk guard */
uint8_t actual_dif[8];
uint8_t expected_dif[8];
} __packed;
/*
* ISP queue - ABTS received/response entries structure definition for 24xx.
*/
#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 24xx.
* The ABTS BLS received from the wire is sent to the
* target driver by the ISP 24xx.
* 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 24xx.
* The ABTS response to the ABTS received is sent by the
* target driver to the ISP 24xx.
* 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 24xx) 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);
void (*handle_data)(struct qla_tgt_cmd *);
void (*handle_dif_err)(struct qla_tgt_cmd *);
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 *,
struct qla_tgt_sess *);
void (*update_sess)(struct qla_tgt_sess *, port_id_t, uint16_t, bool);
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 (*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 */
/* 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
#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 atio_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;
};
struct qla_tgt_sess_op {
struct scsi_qla_host *vha;
uint32_t chip_reset;
struct atio_from_isp atio;
struct work_struct work;
struct list_head cmd_list;
bool aborted;
};
enum qla_sess_deletion {
QLA_SESS_DELETION_NONE = 0,
QLA_SESS_DELETION_PENDING = 1, /* hopefully we can get rid of
* this one */
QLA_SESS_DELETION_IN_PROGRESS = 2,
};
typedef enum {
QLT_PLOGI_LINK_SAME_WWN,
QLT_PLOGI_LINK_CONFLICT,
QLT_PLOGI_LINK_MAX
} qlt_plogi_link_t;
typedef struct {
struct list_head list;
struct imm_ntfy_from_isp iocb;
port_id_t id;
int ref_count;
} qlt_plogi_ack_t;
/*
* 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:2;
unsigned int local:1;
unsigned int logout_on_delete:1;
unsigned int keep_nport_handle:1;
unsigned int send_els_logo:1;
unsigned char logout_completed;
int generation;
struct se_session *se_sess;
struct kref sess_kref;
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;
qlt_plogi_ack_t *plogi_link[QLT_PLOGI_LINK_MAX];
};
typedef enum {
/*
* BIT_0 - Atio Arrival / schedule to work
* BIT_1 - qlt_do_work
* BIT_2 - qlt_do work failed
* BIT_3 - xfer rdy/tcm_qla2xxx_write_pending
* BIT_4 - read respond/tcm_qla2xx_queue_data_in
* BIT_5 - status respond / tcm_qla2xx_queue_status
* BIT_6 - tcm request to abort/Term exchange.
* pre_xmit_response->qlt_send_term_exchange
* BIT_7 - SRR received (qlt_handle_srr->qlt_xmit_response)
* BIT_8 - SRR received (qlt_handle_srr->qlt_rdy_to_xfer)
* BIT_9 - SRR received (qla_handle_srr->qlt_send_term_exchange)
* BIT_10 - Data in - hanlde_data->tcm_qla2xxx_handle_data
* BIT_12 - good completion - qlt_ctio_do_completion -->free_cmd
* BIT_13 - Bad completion -
* qlt_ctio_do_completion --> qlt_term_ctio_exchange
* BIT_14 - Back end data received/sent.
* BIT_15 - SRR prepare ctio
* BIT_16 - complete free
* BIT_17 - flush - qlt_abort_cmd_on_host_reset
* BIT_18 - completion w/abort status
* BIT_19 - completion w/unknown status
* BIT_20 - tcm_qla2xxx_free_cmd
*/
CMD_FLAG_DATA_WORK = BIT_11,
CMD_FLAG_DATA_WORK_FREE = BIT_21,
} cmd_flags_t;
struct qla_tgt_cmd {
struct se_cmd se_cmd;
struct qla_tgt_sess *sess;
int state;
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];
spinlock_t cmd_lock;
/* to save extra sess dereferences */
unsigned int conf_compl_supported:1;
unsigned int sg_mapped:1;
unsigned int free_sg:1;
unsigned int write_data_transferred:1;
unsigned int ctx_dsd_alloced:1;
unsigned int q_full:1;
unsigned int term_exchg:1;
unsigned int cmd_sent_to_fw:1;
unsigned int cmd_in_wq:1;
unsigned int aborted:1;
struct scatterlist *sg; /* cmd data buffer SG vector */
int sg_cnt; /* SG segments count */
int bufflen; /* cmd buffer length */
int offset;
uint32_t unpacked_lun;
enum dma_data_direction dma_data_direction;
uint32_t reset_count;
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;
/* t10dif */
struct scatterlist *prot_sg;
uint32_t prot_sg_cnt;
uint32_t blk_sz;
struct crc_context *ctx;
uint64_t jiffies_at_alloc;
uint64_t jiffies_at_free;
cmd_flags_t cmd_flags;
};
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;
uint32_t reset_count;
#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 */
unsigned char *sense_buffer;
int seg_cnt;
int req_cnt;
uint16_t rq_result;
uint16_t scsi_status;
int sense_buffer_len;
int residual;
int add_status_pkt;
/* dif */
struct scatterlist *prot_sg;
uint16_t prot_seg_cnt;
uint16_t tot_dsds;
};
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;
};
/* Check for Switch reserved address */
#define IS_SW_RESV_ADDR(_s_id) \
((_s_id.b.domain == 0xff) && (_s_id.b.area == 0xfc))
#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;
/*
* 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(void *, u64, u64, u64,
int (*callback)(struct scsi_qla_host *, void *, u64, u64));
extern void qlt_lport_deregister(struct scsi_qla_host *);
void qlt_put_sess(struct qla_tgt_sess *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 *, int);
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)
extern int ql2x_ini_mode;
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;
}
static inline uint32_t sid_to_key(const uint8_t *s_id)
{
uint32_t key;
key = (((unsigned long)s_id[0] << 16) |
((unsigned long)s_id[1] << 8) |
(unsigned long)s_id[2]);
return key;
}
static inline void sid_to_portid(const uint8_t *s_id, port_id_t *p)
{
memset(p, 0, sizeof(*p));
p->b.domain = s_id[0];
p->b.area = s_id[1];
p->b.al_pa = s_id[2];
}
/*
* Exported symbols from qla_target.c LLD logic used by qla2xxx code..
*/
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 int qlt_abort_cmd(struct qla_tgt_cmd *);
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_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 *, uint8_t);
extern void qlt_24xx_config_rings(struct scsi_qla_host *);
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 void qlt_81xx_config_nvram_stage2(struct scsi_qla_host *,
struct init_cb_81xx *);
extern void qlt_81xx_config_nvram_stage1(struct scsi_qla_host *,
struct nvram_81xx *);
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 int qlt_stop_phase1(struct qla_tgt *);
extern void qlt_stop_phase2(struct qla_tgt *);
extern irqreturn_t qla83xx_msix_atio_q(int, void *);
extern void qlt_83xx_iospace_config(struct qla_hw_data *);
extern int qlt_free_qfull_cmds(struct scsi_qla_host *);
extern void qlt_logo_completion_handler(fc_port_t *, int);
extern void qlt_do_generation_tick(struct scsi_qla_host *, int *);
#endif /* __QLA_TARGET_H */
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