Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 938 insertions, 0 deletions

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
new file mode 100644
index 000000000..c39a245f4
--- /dev/null
+++ b/drivers/scsi/ibmvscsi/ibmvfc.h
@@ -0,0 +1,938 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * ibmvfc.h -- driver for IBM Power Virtual Fibre Channel Adapter
+ *
+ * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation
+ *
+ * Copyright (C) IBM Corporation, 2008
+ */
+
+#ifndef _IBMVFC_H
+#define _IBMVFC_H
+
+#include <linux/list.h>
+#include <linux/types.h>
+#include <scsi/viosrp.h>
+
+#define IBMVFC_NAME	"ibmvfc"
+#define IBMVFC_DRIVER_VERSION		"1.0.11"
+#define IBMVFC_DRIVER_DATE		"(April 12, 2013)"
+
+#define IBMVFC_DEFAULT_TIMEOUT	60
+#define IBMVFC_ADISC_CANCEL_TIMEOUT	45
+#define IBMVFC_ADISC_TIMEOUT		15
+#define IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT	\
+		(IBMVFC_ADISC_TIMEOUT + IBMVFC_ADISC_CANCEL_TIMEOUT)
+#define IBMVFC_INIT_TIMEOUT		120
+#define IBMVFC_ABORT_TIMEOUT		8
+#define IBMVFC_ABORT_WAIT_TIMEOUT	40
+#define IBMVFC_MAX_REQUESTS_DEFAULT	100
+
+#define IBMVFC_DEBUG			0
+#define IBMVFC_MAX_TARGETS		1024
+#define IBMVFC_MAX_LUN			0xffffffff
+#define IBMVFC_MAX_SECTORS		0xffffu
+#define IBMVFC_MAX_DISC_THREADS	4
+#define IBMVFC_TGT_MEMPOOL_SZ		64
+#define IBMVFC_MAX_CMDS_PER_LUN	64
+#define IBMVFC_MAX_HOST_INIT_RETRIES	6
+#define IBMVFC_MAX_TGT_INIT_RETRIES		3
+#define IBMVFC_DEV_LOSS_TMO		(5 * 60)
+#define IBMVFC_DEFAULT_LOG_LEVEL	2
+#define IBMVFC_MAX_CDB_LEN		16
+#define IBMVFC_CLS3_ERROR		0
+#define IBMVFC_MQ			1
+#define IBMVFC_SCSI_CHANNELS		8
+#define IBMVFC_MAX_SCSI_QUEUES		16
+#define IBMVFC_SCSI_HW_QUEUES		8
+#define IBMVFC_MIG_NO_SUB_TO_CRQ	0
+#define IBMVFC_MIG_NO_N_TO_M		0
+
+/*
+ * Ensure we have resources for ERP and initialization:
+ * 1 for ERP
+ * 1 for initialization
+ * 1 for NPIV Logout
+ * 2 for BSG passthru
+ * 2 for each discovery thread
+ */
+#define IBMVFC_NUM_INTERNAL_REQ	(1 + 1 + 1 + 2 + (disc_threads * 2))
+
+#define IBMVFC_MAD_SUCCESS		0x00
+#define IBMVFC_MAD_NOT_SUPPORTED	0xF1
+#define IBMVFC_MAD_VERSION_NOT_SUPP	0xF2
+#define IBMVFC_MAD_FAILED		0xF7
+#define IBMVFC_MAD_DRIVER_FAILED	0xEE
+#define IBMVFC_MAD_CRQ_ERROR		0xEF
+
+enum ibmvfc_crq_valid {
+	IBMVFC_CRQ_CMD_RSP		= 0x80,
+	IBMVFC_CRQ_INIT_RSP		= 0xC0,
+	IBMVFC_CRQ_XPORT_EVENT		= 0xFF,
+};
+
+enum ibmvfc_crq_init_msg {
+	IBMVFC_CRQ_INIT			= 0x01,
+	IBMVFC_CRQ_INIT_COMPLETE	= 0x02,
+};
+
+enum ibmvfc_crq_xport_evts {
+	IBMVFC_PARTNER_FAILED		= 0x01,
+	IBMVFC_PARTNER_DEREGISTER	= 0x02,
+	IBMVFC_PARTITION_MIGRATED	= 0x06,
+};
+
+enum ibmvfc_cmd_status_flags {
+	IBMVFC_FABRIC_MAPPED		= 0x0001,
+	IBMVFC_VIOS_FAILURE		= 0x0002,
+	IBMVFC_FC_FAILURE			= 0x0004,
+	IBMVFC_FC_SCSI_ERROR		= 0x0008,
+	IBMVFC_HW_EVENT_LOGGED		= 0x0010,
+	IBMVFC_VIOS_LOGGED		= 0x0020,
+};
+
+enum ibmvfc_fabric_mapped_errors {
+	IBMVFC_UNABLE_TO_ESTABLISH	= 0x0001,
+	IBMVFC_XPORT_FAULT		= 0x0002,
+	IBMVFC_CMD_TIMEOUT		= 0x0003,
+	IBMVFC_ENETDOWN			= 0x0004,
+	IBMVFC_HW_FAILURE			= 0x0005,
+	IBMVFC_LINK_DOWN_ERR		= 0x0006,
+	IBMVFC_LINK_DEAD_ERR		= 0x0007,
+	IBMVFC_UNABLE_TO_REGISTER	= 0x0008,
+	IBMVFC_XPORT_BUSY			= 0x000A,
+	IBMVFC_XPORT_DEAD			= 0x000B,
+	IBMVFC_CONFIG_ERROR		= 0x000C,
+	IBMVFC_NAME_SERVER_FAIL		= 0x000D,
+	IBMVFC_LINK_HALTED		= 0x000E,
+	IBMVFC_XPORT_GENERAL		= 0x8000,
+};
+
+enum ibmvfc_vios_errors {
+	IBMVFC_CRQ_FAILURE			= 0x0001,
+	IBMVFC_SW_FAILURE				= 0x0002,
+	IBMVFC_INVALID_PARAMETER		= 0x0003,
+	IBMVFC_MISSING_PARAMETER		= 0x0004,
+	IBMVFC_HOST_IO_BUS			= 0x0005,
+	IBMVFC_TRANS_CANCELLED			= 0x0006,
+	IBMVFC_TRANS_CANCELLED_IMPLICIT	= 0x0007,
+	IBMVFC_INSUFFICIENT_RESOURCE		= 0x0008,
+	IBMVFC_PLOGI_REQUIRED			= 0x0010,
+	IBMVFC_COMMAND_FAILED			= 0x8000,
+};
+
+enum ibmvfc_mad_types {
+	IBMVFC_NPIV_LOGIN		= 0x0001,
+	IBMVFC_DISC_TARGETS	= 0x0002,
+	IBMVFC_PORT_LOGIN		= 0x0004,
+	IBMVFC_PROCESS_LOGIN	= 0x0008,
+	IBMVFC_QUERY_TARGET	= 0x0010,
+	IBMVFC_MOVE_LOGIN		= 0x0020,
+	IBMVFC_IMPLICIT_LOGOUT	= 0x0040,
+	IBMVFC_PASSTHRU		= 0x0200,
+	IBMVFC_TMF_MAD		= 0x0100,
+	IBMVFC_NPIV_LOGOUT	= 0x0800,
+	IBMVFC_CHANNEL_ENQUIRY	= 0x1000,
+	IBMVFC_CHANNEL_SETUP	= 0x2000,
+	IBMVFC_CONNECTION_INFO	= 0x4000,
+};
+
+struct ibmvfc_mad_common {
+	__be32 version;
+	__be32 reserved;
+	__be32 opcode;
+	__be16 status;
+	__be16 length;
+	__be64 tag;
+} __packed __aligned(8);
+
+struct ibmvfc_npiv_login_mad {
+	struct ibmvfc_mad_common common;
+	struct srp_direct_buf buffer;
+} __packed __aligned(8);
+
+struct ibmvfc_npiv_logout_mad {
+	struct ibmvfc_mad_common common;
+} __packed __aligned(8);
+
+#define IBMVFC_MAX_NAME 256
+
+struct ibmvfc_npiv_login {
+	__be32 ostype;
+#define IBMVFC_OS_LINUX	0x02
+	__be32 pad;
+	__be64 max_dma_len;
+	__be32 max_payload;
+	__be32 max_response;
+	__be32 partition_num;
+	__be32 vfc_frame_version;
+	__be16 fcp_version;
+	__be16 flags;
+#define IBMVFC_CLIENT_MIGRATED	0x01
+#define IBMVFC_FLUSH_ON_HALT		0x02
+	__be32 max_cmds;
+	__be64 capabilities;
+#define IBMVFC_CAN_MIGRATE		0x01
+#define IBMVFC_CAN_USE_CHANNELS		0x02
+#define IBMVFC_CAN_HANDLE_FPIN		0x04
+#define IBMVFC_CAN_USE_MAD_VERSION	0x08
+#define IBMVFC_CAN_SEND_VF_WWPN		0x10
+	__be64 node_name;
+	struct srp_direct_buf async;
+	u8 partition_name[IBMVFC_MAX_NAME];
+	u8 device_name[IBMVFC_MAX_NAME];
+	u8 drc_name[IBMVFC_MAX_NAME];
+	__be64 reserved2[2];
+} __packed __aligned(8);
+
+struct ibmvfc_common_svc_parms {
+	__be16 fcph_version;
+	__be16 b2b_credit;
+	__be16 features;
+	__be16 bb_rcv_sz; /* upper nibble is BB_SC_N */
+	__be32 ratov;
+	__be32 edtov;
+} __packed __aligned(4);
+
+struct ibmvfc_service_parms {
+	struct ibmvfc_common_svc_parms common;
+	u8 port_name[8];
+	u8 node_name[8];
+	__be32 class1_parms[4];
+	__be32 class2_parms[4];
+	__be32 class3_parms[4];
+	__be32 obsolete[4];
+	__be32 vendor_version[4];
+	__be32 services_avail[2];
+	__be32 ext_len;
+	__be32 reserved[30];
+	__be32 clk_sync_qos[2];
+	__be32 reserved2;
+} __packed __aligned(4);
+
+struct ibmvfc_npiv_login_resp {
+	__be32 version;
+	__be16 status;
+	__be16 error;
+	__be32 flags;
+#define IBMVFC_NATIVE_FC		0x01
+	__be32 reserved;
+	__be64 capabilities;
+#define IBMVFC_CAN_FLUSH_ON_HALT	0x08
+#define IBMVFC_CAN_SUPPRESS_ABTS	0x10
+#define IBMVFC_MAD_VERSION_CAP		0x20
+#define IBMVFC_HANDLE_VF_WWPN		0x40
+#define IBMVFC_CAN_SUPPORT_CHANNELS	0x80
+	__be32 max_cmds;
+	__be32 scsi_id_sz;
+	__be64 max_dma_len;
+	__be64 scsi_id;
+	__be64 port_name;
+	__be64 node_name;
+	__be64 link_speed;
+	u8 partition_name[IBMVFC_MAX_NAME];
+	u8 device_name[IBMVFC_MAX_NAME];
+	u8 port_loc_code[IBMVFC_MAX_NAME];
+	u8 drc_name[IBMVFC_MAX_NAME];
+	struct ibmvfc_service_parms service_parms;
+	__be64 reserved2;
+} __packed __aligned(8);
+
+union ibmvfc_npiv_login_data {
+	struct ibmvfc_npiv_login login;
+	struct ibmvfc_npiv_login_resp resp;
+} __packed __aligned(8);
+
+struct ibmvfc_discover_targets_entry {
+	__be32 scsi_id;
+	__be32 pad;
+	__be64 wwpn;
+#define IBMVFC_DISC_TGT_SCSI_ID_MASK	0x00ffffff
+} __packed __aligned(8);
+
+struct ibmvfc_discover_targets {
+	struct ibmvfc_mad_common common;
+	struct srp_direct_buf buffer;
+	__be32 flags;
+#define IBMVFC_DISC_TGT_PORT_ID_WWPN_LIST	0x02
+	__be16 status;
+	__be16 error;
+	__be32 bufflen;
+	__be32 num_avail;
+	__be32 num_written;
+	__be64 reserved[2];
+} __packed __aligned(8);
+
+enum ibmvfc_fc_reason {
+	IBMVFC_INVALID_ELS_CMD_CODE	= 0x01,
+	IBMVFC_INVALID_VERSION		= 0x02,
+	IBMVFC_LOGICAL_ERROR		= 0x03,
+	IBMVFC_INVALID_CT_IU_SIZE	= 0x04,
+	IBMVFC_LOGICAL_BUSY		= 0x05,
+	IBMVFC_PROTOCOL_ERROR		= 0x07,
+	IBMVFC_UNABLE_TO_PERFORM_REQ	= 0x09,
+	IBMVFC_CMD_NOT_SUPPORTED	= 0x0B,
+	IBMVFC_SERVER_NOT_AVAIL		= 0x0D,
+	IBMVFC_CMD_IN_PROGRESS		= 0x0E,
+	IBMVFC_VENDOR_SPECIFIC		= 0xFF,
+};
+
+enum ibmvfc_fc_type {
+	IBMVFC_FABRIC_REJECT	= 0x01,
+	IBMVFC_PORT_REJECT	= 0x02,
+	IBMVFC_LS_REJECT		= 0x03,
+	IBMVFC_FABRIC_BUSY	= 0x04,
+	IBMVFC_PORT_BUSY		= 0x05,
+	IBMVFC_BASIC_REJECT	= 0x06,
+};
+
+enum ibmvfc_gs_explain {
+	IBMVFC_PORT_NAME_NOT_REG	= 0x02,
+};
+
+struct ibmvfc_port_login {
+	struct ibmvfc_mad_common common;
+	__be64 scsi_id;
+	__be16 reserved;
+	__be16 fc_service_class;
+	__be32 blksz;
+	__be32 hdr_per_blk;
+	__be16 status;
+	__be16 error;		/* also fc_reason */
+	__be16 fc_explain;
+	__be16 fc_type;
+	__be32 reserved2;
+	struct ibmvfc_service_parms service_parms;
+	struct ibmvfc_service_parms service_parms_change;
+	__be64 target_wwpn;
+	__be64 reserved3[2];
+} __packed __aligned(8);
+
+struct ibmvfc_move_login {
+	struct ibmvfc_mad_common common;
+	__be64 old_scsi_id;
+	__be64 new_scsi_id;
+	__be64 wwpn;
+	__be64 node_name;
+	__be32 flags;
+#define IBMVFC_MOVE_LOGIN_IMPLICIT_OLD_FAILED	0x01
+#define IBMVFC_MOVE_LOGIN_IMPLICIT_NEW_FAILED	0x02
+#define IBMVFC_MOVE_LOGIN_PORT_LOGIN_FAILED	0x04
+	__be32 reserved;
+	struct ibmvfc_service_parms service_parms;
+	struct ibmvfc_service_parms service_parms_change;
+	__be32 reserved2;
+	__be16 service_class;
+	__be16 vios_flags;
+#define IBMVFC_MOVE_LOGIN_VF_NOT_SENT_ADAPTER	0x01
+	__be64 reserved3;
+} __packed __aligned(8);
+
+struct ibmvfc_prli_svc_parms {
+	u8 type;
+#define IBMVFC_SCSI_FCP_TYPE		0x08
+	u8 type_ext;
+	__be16 flags;
+#define IBMVFC_PRLI_ORIG_PA_VALID			0x8000
+#define IBMVFC_PRLI_RESP_PA_VALID			0x4000
+#define IBMVFC_PRLI_EST_IMG_PAIR			0x2000
+	__be32 orig_pa;
+	__be32 resp_pa;
+	__be32 service_parms;
+#define IBMVFC_PRLI_TASK_RETRY			0x00000200
+#define IBMVFC_PRLI_RETRY				0x00000100
+#define IBMVFC_PRLI_DATA_OVERLAY			0x00000040
+#define IBMVFC_PRLI_INITIATOR_FUNC			0x00000020
+#define IBMVFC_PRLI_TARGET_FUNC			0x00000010
+#define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED	0x00000002
+#define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED	0x00000001
+} __packed __aligned(4);
+
+struct ibmvfc_process_login {
+	struct ibmvfc_mad_common common;
+	__be64 scsi_id;
+	struct ibmvfc_prli_svc_parms parms;
+	u8 reserved[48];
+	__be16 status;
+	__be16 error;			/* also fc_reason */
+	__be32 reserved2;
+	__be64 target_wwpn;
+	__be64 reserved3[2];
+} __packed __aligned(8);
+
+struct ibmvfc_query_tgt {
+	struct ibmvfc_mad_common common;
+	__be64 wwpn;
+	__be64 scsi_id;
+	__be16 status;
+	__be16 error;
+	__be16 fc_explain;
+	__be16 fc_type;
+	__be64 reserved[2];
+} __packed __aligned(8);
+
+struct ibmvfc_implicit_logout {
+	struct ibmvfc_mad_common common;
+	__be64 old_scsi_id;
+	__be64 reserved[2];
+} __packed __aligned(8);
+
+struct ibmvfc_tmf {
+	struct ibmvfc_mad_common common;
+	__be64 scsi_id;
+	struct scsi_lun lun;
+	__be32 flags;
+#define IBMVFC_TMF_ABORT_TASK		0x02
+#define IBMVFC_TMF_ABORT_TASK_SET	0x04
+#define IBMVFC_TMF_LUN_RESET		0x10
+#define IBMVFC_TMF_TGT_RESET		0x20
+#define IBMVFC_TMF_LUA_VALID		0x40
+#define IBMVFC_TMF_SUPPRESS_ABTS	0x80
+	__be32 cancel_key;
+	__be32 my_cancel_key;
+	__be32 pad;
+	__be64 target_wwpn;
+	__be64 task_tag;
+	__be64 reserved[2];
+} __packed __aligned(8);
+
+enum ibmvfc_fcp_rsp_info_codes {
+	RSP_NO_FAILURE		= 0x00,
+	RSP_TMF_REJECTED		= 0x04,
+	RSP_TMF_FAILED		= 0x05,
+	RSP_TMF_INVALID_LUN	= 0x09,
+};
+
+struct ibmvfc_fcp_rsp_info {
+	u8 reserved[3];
+	u8 rsp_code;
+	u8 reserved2[4];
+} __packed __aligned(2);
+
+enum ibmvfc_fcp_rsp_flags {
+	FCP_BIDI_RSP			= 0x80,
+	FCP_BIDI_READ_RESID_UNDER	= 0x40,
+	FCP_BIDI_READ_RESID_OVER	= 0x20,
+	FCP_CONF_REQ			= 0x10,
+	FCP_RESID_UNDER			= 0x08,
+	FCP_RESID_OVER			= 0x04,
+	FCP_SNS_LEN_VALID			= 0x02,
+	FCP_RSP_LEN_VALID			= 0x01,
+};
+
+union ibmvfc_fcp_rsp_data {
+	struct ibmvfc_fcp_rsp_info info;
+	u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
+} __packed __aligned(8);
+
+struct ibmvfc_fcp_rsp {
+	__be64 reserved;
+	__be16 retry_delay_timer;
+	u8 flags;
+	u8 scsi_status;
+	__be32 fcp_resid;
+	__be32 fcp_sense_len;
+	__be32 fcp_rsp_len;
+	union ibmvfc_fcp_rsp_data data;
+} __packed __aligned(8);
+
+enum ibmvfc_cmd_flags {
+	IBMVFC_SCATTERLIST	= 0x0001,
+	IBMVFC_NO_MEM_DESC	= 0x0002,
+	IBMVFC_READ			= 0x0004,
+	IBMVFC_WRITE		= 0x0008,
+	IBMVFC_TMF			= 0x0080,
+	IBMVFC_CLASS_3_ERR	= 0x0100,
+};
+
+enum ibmvfc_fc_task_attr {
+	IBMVFC_SIMPLE_TASK	= 0x00,
+	IBMVFC_HEAD_OF_QUEUE	= 0x01,
+	IBMVFC_ORDERED_TASK	= 0x02,
+	IBMVFC_ACA_TASK		= 0x04,
+};
+
+enum ibmvfc_fc_tmf_flags {
+	IBMVFC_ABORT_TASK_SET	= 0x02,
+	IBMVFC_LUN_RESET		= 0x10,
+	IBMVFC_TARGET_RESET	= 0x20,
+};
+
+struct ibmvfc_fcp_cmd_iu {
+	struct scsi_lun lun;
+	u8 crn;
+	u8 pri_task_attr;
+	u8 tmf_flags;
+	u8 add_cdb_len;
+#define IBMVFC_RDDATA		0x02
+#define IBMVFC_WRDATA		0x01
+	u8 cdb[IBMVFC_MAX_CDB_LEN];
+	__be32 xfer_len;
+} __packed __aligned(4);
+
+struct ibmvfc_cmd {
+	__be64 task_tag;
+	__be32 frame_type;
+	__be32 payload_len;
+	__be32 resp_len;
+	__be32 adapter_resid;
+	__be16 status;
+	__be16 error;
+	__be16 flags;
+	__be16 response_flags;
+#define IBMVFC_ADAPTER_RESID_VALID	0x01
+	__be32 cancel_key;
+	__be32 exchange_id;
+	struct srp_direct_buf ext_func;
+	struct srp_direct_buf ioba;
+	struct srp_direct_buf resp;
+	__be64 correlation;
+	__be64 tgt_scsi_id;
+	__be64 tag;
+	__be64 target_wwpn;
+	__be64 reserved3;
+	union {
+		struct {
+			struct ibmvfc_fcp_cmd_iu iu;
+			struct ibmvfc_fcp_rsp rsp;
+		} v1;
+		struct {
+			__be64 reserved4;
+			struct ibmvfc_fcp_cmd_iu iu;
+			struct ibmvfc_fcp_rsp rsp;
+		} v2;
+	};
+} __packed __aligned(8);
+
+struct ibmvfc_passthru_fc_iu {
+	__be32 payload[7];
+#define IBMVFC_ADISC	0x52000000
+	__be32 response[7];
+};
+
+struct ibmvfc_passthru_iu {
+	__be64 task_tag;
+	__be32 cmd_len;
+	__be32 rsp_len;
+	__be16 status;
+	__be16 error;
+	__be32 flags;
+#define IBMVFC_FC_ELS		0x01
+#define IBMVFC_FC_CT_IU		0x02
+	__be32 cancel_key;
+#define IBMVFC_PASSTHRU_CANCEL_KEY	0x80000000
+#define IBMVFC_INTERNAL_CANCEL_KEY	0x80000001
+	__be32 reserved;
+	struct srp_direct_buf cmd;
+	struct srp_direct_buf rsp;
+	__be64 correlation;
+	__be64 scsi_id;
+	__be64 tag;
+	__be64 target_wwpn;
+	__be64 reserved2[2];
+} __packed __aligned(8);
+
+struct ibmvfc_passthru_mad {
+	struct ibmvfc_mad_common common;
+	struct srp_direct_buf cmd_ioba;
+	struct ibmvfc_passthru_iu iu;
+	struct ibmvfc_passthru_fc_iu fc_iu;
+} __packed __aligned(8);
+
+struct ibmvfc_channel_enquiry {
+	struct ibmvfc_mad_common common;
+	__be32 flags;
+#define IBMVFC_NO_CHANNELS_TO_CRQ_SUPPORT	0x01
+#define IBMVFC_SUPPORT_VARIABLE_SUBQ_MSG	0x02
+#define IBMVFC_NO_N_TO_M_CHANNELS_SUPPORT	0x04
+	__be32 num_scsi_subq_channels;
+	__be32 num_nvmeof_subq_channels;
+	__be32 num_scsi_vas_channels;
+	__be32 num_nvmeof_vas_channels;
+} __packed __aligned(8);
+
+struct ibmvfc_channel_setup_mad {
+	struct ibmvfc_mad_common common;
+	struct srp_direct_buf buffer;
+} __packed __aligned(8);
+
+#define IBMVFC_MAX_CHANNELS	502
+
+struct ibmvfc_channel_setup {
+	__be32 flags;
+#define IBMVFC_CANCEL_CHANNELS		0x01
+#define IBMVFC_USE_BUFFER		0x02
+#define IBMVFC_CHANNELS_CANCELED	0x04
+	__be32 reserved;
+	__be32 num_scsi_subq_channels;
+	__be32 num_nvmeof_subq_channels;
+	__be32 num_scsi_vas_channels;
+	__be32 num_nvmeof_vas_channels;
+	struct srp_direct_buf buffer;
+	__be64 reserved2[5];
+	__be64 channel_handles[IBMVFC_MAX_CHANNELS];
+} __packed __aligned(8);
+
+struct ibmvfc_connection_info {
+	struct ibmvfc_mad_common common;
+	__be64 information_bits;
+#define IBMVFC_NO_FC_IO_CHANNEL		0x01
+#define IBMVFC_NO_PHYP_VAS		0x02
+#define IBMVFC_NO_PHYP_SUBQ		0x04
+#define IBMVFC_PHYP_DEPRECATED_SUBQ	0x08
+#define IBMVFC_PHYP_PRESERVED_SUBQ	0x10
+#define IBMVFC_PHYP_FULL_SUBQ		0x20
+	__be64 reserved[16];
+} __packed __aligned(8);
+
+struct ibmvfc_trace_start_entry {
+	u32 xfer_len;
+} __packed;
+
+struct ibmvfc_trace_end_entry {
+	u16 status;
+	u16 error;
+	u8 fcp_rsp_flags;
+	u8 rsp_code;
+	u8 scsi_status;
+	u8 reserved;
+} __packed;
+
+struct ibmvfc_trace_entry {
+	struct ibmvfc_event *evt;
+	u32 time;
+	u32 scsi_id;
+	u32 lun;
+	u8 fmt;
+	u8 op_code;
+	u8 tmf_flags;
+	u8 type;
+#define IBMVFC_TRC_START	0x00
+#define IBMVFC_TRC_END		0xff
+	union {
+		struct ibmvfc_trace_start_entry start;
+		struct ibmvfc_trace_end_entry end;
+	} u;
+} __packed __aligned(8);
+
+enum ibmvfc_crq_formats {
+	IBMVFC_CMD_FORMAT		= 0x01,
+	IBMVFC_ASYNC_EVENT	= 0x02,
+	IBMVFC_MAD_FORMAT		= 0x04,
+};
+
+enum ibmvfc_async_event {
+	IBMVFC_AE_ELS_PLOGI		= 0x0001,
+	IBMVFC_AE_ELS_LOGO		= 0x0002,
+	IBMVFC_AE_ELS_PRLO		= 0x0004,
+	IBMVFC_AE_SCN_NPORT		= 0x0008,
+	IBMVFC_AE_SCN_GROUP		= 0x0010,
+	IBMVFC_AE_SCN_DOMAIN		= 0x0020,
+	IBMVFC_AE_SCN_FABRIC		= 0x0040,
+	IBMVFC_AE_LINK_UP			= 0x0080,
+	IBMVFC_AE_LINK_DOWN		= 0x0100,
+	IBMVFC_AE_LINK_DEAD		= 0x0200,
+	IBMVFC_AE_HALT			= 0x0400,
+	IBMVFC_AE_RESUME			= 0x0800,
+	IBMVFC_AE_ADAPTER_FAILED	= 0x1000,
+	IBMVFC_AE_FPIN			= 0x2000,
+};
+
+struct ibmvfc_async_desc {
+	const char *desc;
+	enum ibmvfc_async_event ae;
+	int log_level;
+};
+
+struct ibmvfc_crq {
+	volatile u8 valid;
+	volatile u8 format;
+	u8 reserved[6];
+	volatile __be64 ioba;
+} __packed __aligned(8);
+
+struct ibmvfc_sub_crq {
+	struct ibmvfc_crq crq;
+	__be64 reserved[2];
+} __packed __aligned(8);
+
+enum ibmvfc_ae_link_state {
+	IBMVFC_AE_LS_LINK_UP		= 0x01,
+	IBMVFC_AE_LS_LINK_BOUNCED	= 0x02,
+	IBMVFC_AE_LS_LINK_DOWN		= 0x04,
+	IBMVFC_AE_LS_LINK_DEAD		= 0x08,
+};
+
+enum ibmvfc_ae_fpin_status {
+	IBMVFC_AE_FPIN_LINK_CONGESTED	= 0x1,
+	IBMVFC_AE_FPIN_PORT_CONGESTED	= 0x2,
+	IBMVFC_AE_FPIN_PORT_CLEARED	= 0x3,
+	IBMVFC_AE_FPIN_PORT_DEGRADED	= 0x4,
+};
+
+struct ibmvfc_async_crq {
+	volatile u8 valid;
+	u8 link_state;
+	u8 fpin_status;
+	u8 pad;
+	__be32 pad2;
+	volatile __be64 event;
+	volatile __be64 scsi_id;
+	volatile __be64 wwpn;
+	volatile __be64 node_name;
+	__be64 reserved;
+} __packed __aligned(8);
+
+union ibmvfc_iu {
+	struct ibmvfc_mad_common mad_common;
+	struct ibmvfc_npiv_login_mad npiv_login;
+	struct ibmvfc_npiv_logout_mad npiv_logout;
+	struct ibmvfc_discover_targets discover_targets;
+	struct ibmvfc_port_login plogi;
+	struct ibmvfc_process_login prli;
+	struct ibmvfc_move_login move_login;
+	struct ibmvfc_query_tgt query_tgt;
+	struct ibmvfc_implicit_logout implicit_logout;
+	struct ibmvfc_tmf tmf;
+	struct ibmvfc_cmd cmd;
+	struct ibmvfc_passthru_mad passthru;
+	struct ibmvfc_channel_enquiry channel_enquiry;
+	struct ibmvfc_channel_setup_mad channel_setup;
+	struct ibmvfc_connection_info connection_info;
+} __packed __aligned(8);
+
+enum ibmvfc_target_action {
+	IBMVFC_TGT_ACTION_NONE = 0,
+	IBMVFC_TGT_ACTION_INIT,
+	IBMVFC_TGT_ACTION_INIT_WAIT,
+	IBMVFC_TGT_ACTION_LOGOUT_RPORT,
+	IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT,
+	IBMVFC_TGT_ACTION_DEL_RPORT,
+	IBMVFC_TGT_ACTION_DELETED_RPORT,
+	IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT,
+	IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT,
+};
+
+struct ibmvfc_target {
+	struct list_head queue;
+	struct ibmvfc_host *vhost;
+	u64 scsi_id;
+	u64 wwpn;
+	u64 new_scsi_id;
+	struct fc_rport *rport;
+	int target_id;
+	enum ibmvfc_target_action action;
+	int need_login;
+	int add_rport;
+	int init_retries;
+	int logo_rcvd;
+	int move_login;
+	u32 cancel_key;
+	struct ibmvfc_service_parms service_parms;
+	struct ibmvfc_service_parms service_parms_change;
+	struct fc_rport_identifiers ids;
+	void (*job_step) (struct ibmvfc_target *);
+	struct timer_list timer;
+	struct kref kref;
+};
+
+/* a unit of work for the hosting partition */
+struct ibmvfc_event {
+	struct list_head queue_list;
+	struct list_head cancel;
+	struct ibmvfc_host *vhost;
+	struct ibmvfc_queue *queue;
+	struct ibmvfc_target *tgt;
+	struct scsi_cmnd *cmnd;
+	atomic_t free;
+	atomic_t active;
+	union ibmvfc_iu *xfer_iu;
+	void (*done)(struct ibmvfc_event *evt);
+	void (*_done)(struct ibmvfc_event *evt);
+	struct ibmvfc_crq crq;
+	union ibmvfc_iu iu;
+	union ibmvfc_iu *sync_iu;
+	struct srp_direct_buf *ext_list;
+	dma_addr_t ext_list_token;
+	struct completion comp;
+	struct completion *eh_comp;
+	struct timer_list timer;
+	u16 hwq;
+};
+
+/* a pool of event structs for use */
+struct ibmvfc_event_pool {
+	struct ibmvfc_event *events;
+	u32 size;
+	union ibmvfc_iu *iu_storage;
+	dma_addr_t iu_token;
+};
+
+enum ibmvfc_msg_fmt {
+	IBMVFC_CRQ_FMT = 0,
+	IBMVFC_ASYNC_FMT,
+	IBMVFC_SUB_CRQ_FMT,
+};
+
+union ibmvfc_msgs {
+	void *handle;
+	struct ibmvfc_crq *crq;
+	struct ibmvfc_async_crq *async;
+	struct ibmvfc_sub_crq *scrq;
+};
+
+struct ibmvfc_queue {
+	union ibmvfc_msgs msgs;
+	dma_addr_t msg_token;
+	enum ibmvfc_msg_fmt fmt;
+	int size, cur;
+	spinlock_t _lock;
+	spinlock_t *q_lock;
+
+	struct ibmvfc_host *vhost;
+	struct ibmvfc_event_pool evt_pool;
+	struct list_head sent;
+	struct list_head free;
+	spinlock_t l_lock;
+
+	union ibmvfc_iu cancel_rsp;
+
+	/* Sub-CRQ fields */
+	unsigned long cookie;
+	unsigned long vios_cookie;
+	unsigned long hw_irq;
+	unsigned long irq;
+	unsigned long hwq_id;
+	char name[32];
+};
+
+struct ibmvfc_scsi_channels {
+	struct ibmvfc_queue *scrqs;
+	unsigned int active_queues;
+};
+
+enum ibmvfc_host_action {
+	IBMVFC_HOST_ACTION_NONE = 0,
+	IBMVFC_HOST_ACTION_RESET,
+	IBMVFC_HOST_ACTION_REENABLE,
+	IBMVFC_HOST_ACTION_LOGO,
+	IBMVFC_HOST_ACTION_LOGO_WAIT,
+	IBMVFC_HOST_ACTION_INIT,
+	IBMVFC_HOST_ACTION_INIT_WAIT,
+	IBMVFC_HOST_ACTION_QUERY,
+	IBMVFC_HOST_ACTION_QUERY_TGTS,
+	IBMVFC_HOST_ACTION_TGT_DEL,
+	IBMVFC_HOST_ACTION_ALLOC_TGTS,
+	IBMVFC_HOST_ACTION_TGT_INIT,
+	IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
+};
+
+enum ibmvfc_host_state {
+	IBMVFC_NO_CRQ = 0,
+	IBMVFC_INITIALIZING,
+	IBMVFC_ACTIVE,
+	IBMVFC_HALTED,
+	IBMVFC_LINK_DOWN,
+	IBMVFC_LINK_DEAD,
+	IBMVFC_HOST_OFFLINE,
+};
+
+struct ibmvfc_host {
+	char name[8];
+	struct list_head queue;
+	struct Scsi_Host *host;
+	enum ibmvfc_host_state state;
+	enum ibmvfc_host_action action;
+#define IBMVFC_NUM_TRACE_INDEX_BITS		8
+#define IBMVFC_NUM_TRACE_ENTRIES		(1 << IBMVFC_NUM_TRACE_INDEX_BITS)
+#define IBMVFC_TRACE_INDEX_MASK			(IBMVFC_NUM_TRACE_ENTRIES - 1)
+#define IBMVFC_TRACE_SIZE	(sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
+	struct ibmvfc_trace_entry *trace;
+	atomic_t trace_index;
+	int num_targets;
+	struct list_head targets;
+	struct list_head purge;
+	struct device *dev;
+	struct dma_pool *sg_pool;
+	mempool_t *tgt_pool;
+	struct ibmvfc_queue crq;
+	struct ibmvfc_queue async_crq;
+	struct ibmvfc_scsi_channels scsi_scrqs;
+	struct ibmvfc_npiv_login login_info;
+	union ibmvfc_npiv_login_data *login_buf;
+	dma_addr_t login_buf_dma;
+	struct ibmvfc_channel_setup *channel_setup_buf;
+	dma_addr_t channel_setup_dma;
+	int disc_buf_sz;
+	int log_level;
+	struct ibmvfc_discover_targets_entry *disc_buf;
+	struct mutex passthru_mutex;
+	int max_vios_scsi_channels;
+	int task_set;
+	int init_retries;
+	int discovery_threads;
+	int abort_threads;
+	int client_migrated;
+	int reinit;
+	int delay_init;
+	int scan_complete;
+	int scan_timeout;
+	int logged_in;
+	int mq_enabled;
+	int using_channels;
+	int do_enquiry;
+	int client_scsi_channels;
+	int aborting_passthru;
+	int events_to_log;
+#define IBMVFC_AE_LINKUP	0x0001
+#define IBMVFC_AE_LINKDOWN	0x0002
+#define IBMVFC_AE_RSCN		0x0004
+	dma_addr_t disc_buf_dma;
+	unsigned int partition_number;
+	char partition_name[97];
+	void (*job_step) (struct ibmvfc_host *);
+	struct task_struct *work_thread;
+	struct tasklet_struct tasklet;
+	struct work_struct rport_add_work_q;
+	wait_queue_head_t init_wait_q;
+	wait_queue_head_t work_wait_q;
+};
+
+#define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
+
+#define tgt_dbg(t, fmt, ...)			\
+	DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
+
+#define tgt_info(t, fmt, ...)		\
+	dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
+
+#define tgt_err(t, fmt, ...)		\
+	dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
+
+#define tgt_log(t, level, fmt, ...) \
+	do { \
+		if ((t)->vhost->log_level >= level) \
+			tgt_err(t, fmt, ##__VA_ARGS__); \
+	} while (0)
+
+#define ibmvfc_dbg(vhost, ...) \
+	DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
+
+#define ibmvfc_log(vhost, level, ...) \
+	do { \
+		if ((vhost)->log_level >= level) \
+			dev_err((vhost)->dev, ##__VA_ARGS__); \
+	} while (0)
+
+#define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
+#define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
+
+#ifdef CONFIG_SCSI_IBMVFC_TRACE
+#define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
+#define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
+#else
+#define ibmvfc_create_trace_file(kobj, attr) 0
+#define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
+#endif
+
+#endif