drivers/scsi/be2iscsi/be_cmds.h

/**
 * Copyright (C) 2005 - 2010 ServerEngines
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.  The full GNU General
 * Public License is included in this distribution in the file called COPYING.
 *
 * Contact Information:
 * linux-drivers@serverengines.com
 *
 * ServerEngines
 * 209 N. Fair Oaks Ave
 * Sunnyvale, CA 94085
 */

#ifndef BEISCSI_CMDS_H
#define BEISCSI_CMDS_H

/**
 * The driver sends configuration and managements command requests to the
 * firmware in the BE. These requests are communicated to the processor
 * using Work Request Blocks (WRBs) submitted to the MCC-WRB ring or via one
 * WRB inside a MAILBOX.
 * The commands are serviced by the ARM processor in the BladeEngine's MPU.
 */
struct be_sge {
	u32 pa_lo;
	u32 pa_hi;
	u32 len;
};

#define MCC_WRB_SGE_CNT_SHIFT 3	/* bits 3 - 7 of dword 0 */
#define MCC_WRB_SGE_CNT_MASK 0x1F	/* bits 3 - 7 of dword 0 */
struct be_mcc_wrb {
	u32 embedded;		/* dword 0 */
	u32 payload_length;	/* dword 1 */
	u32 tag0;		/* dword 2 */
	u32 tag1;		/* dword 3 */
	u32 rsvd;		/* dword 4 */
	union {
		u8 embedded_payload[236];	/* used by embedded cmds */
		struct be_sge sgl[19];	/* used by non-embedded cmds */
	} payload;
};

#define CQE_FLAGS_VALID_MASK (1 << 31)
#define CQE_FLAGS_ASYNC_MASK (1 << 30)
#define CQE_FLAGS_COMPLETED_MASK 	(1 << 28)
#define CQE_FLAGS_CONSUMED_MASK 	(1 << 27)

/* Completion Status */
#define MCC_STATUS_SUCCESS 0x0

#define CQE_STATUS_COMPL_MASK 0xFFFF
#define CQE_STATUS_COMPL_SHIFT 0	/* bits 0 - 15 */
#define CQE_STATUS_EXTD_MASK 0xFFFF
#define CQE_STATUS_EXTD_SHIFT 0		/* bits 0 - 15 */

struct be_mcc_compl {
	u32 status;		/* dword 0 */
	u32 tag0;		/* dword 1 */
	u32 tag1;		/* dword 2 */
	u32 flags;		/* dword 3 */
};

/********* Mailbox door bell *************/
/**
 * Used for driver communication with the FW.
 * The software must write this register twice to post any command. First,
 * it writes the register with hi=1 and the upper bits of the physical address
 * for the MAILBOX structure. Software must poll the ready bit until this
 * is acknowledged. Then, sotware writes the register with hi=0 with the lower
 * bits in the address. It must poll the ready bit until the command is
 * complete. Upon completion, the MAILBOX will contain a valid completion
 * queue entry.
 */
#define MPU_MAILBOX_DB_OFFSET	0x160
#define MPU_MAILBOX_DB_RDY_MASK	0x1	/* bit 0 */
#define MPU_MAILBOX_DB_HI_MASK	0x2	/* bit 1 */

/********** MPU semphore ******************/
#define MPU_EP_SEMAPHORE_OFFSET 0xac
#define EP_SEMAPHORE_POST_STAGE_MASK 0x0000FFFF
#define EP_SEMAPHORE_POST_ERR_MASK 0x1
#define EP_SEMAPHORE_POST_ERR_SHIFT 31

/********** MCC door bell ************/
#define DB_MCCQ_OFFSET 0x140
#define DB_MCCQ_RING_ID_MASK 0x7FF		/* bits 0 - 10 */
/* Number of entries posted */
#define DB_MCCQ_NUM_POSTED_SHIFT 16		/* bits 16 - 29 */

/* MPU semphore POST stage values */
#define POST_STAGE_ARMFW_RDY		0xc000	/* FW is done with POST */

/**
 * When the async bit of mcc_compl is set, the last 4 bytes of
 * mcc_compl is interpreted as follows:
 */
#define ASYNC_TRAILER_EVENT_CODE_SHIFT	8	/* bits 8 - 15 */
#define ASYNC_TRAILER_EVENT_CODE_MASK	0xFF
#define ASYNC_EVENT_CODE_LINK_STATE	0x1
struct be_async_event_trailer {
	u32 code;
};

enum {
	ASYNC_EVENT_LINK_DOWN = 0x0,
	ASYNC_EVENT_LINK_UP = 0x1
};

/**
 * When the event code of an async trailer is link-state, the mcc_compl
 * must be interpreted as follows
 */
struct be_async_event_link_state {
	u8 physical_port;
	u8 port_link_status;
	u8 port_duplex;
	u8 port_speed;
	u8 port_fault;
	u8 rsvd0[7];
	struct be_async_event_trailer trailer;
} __packed;

struct be_mcc_mailbox {
	struct be_mcc_wrb wrb;
	struct be_mcc_compl compl;
};

/* Type of subsystems supported by FW */
#define CMD_SUBSYSTEM_COMMON    0x1
#define CMD_SUBSYSTEM_ISCSI     0x2
#define CMD_SUBSYSTEM_ETH       0x3
#define CMD_SUBSYSTEM_ISCSI_INI 0x6
#define CMD_COMMON_TCP_UPLOAD   0x1

/**
 * List of common opcodes subsystem  CMD_SUBSYSTEM_COMMON
 * These opcodes are unique for each subsystem defined above
 */
#define OPCODE_COMMON_CQ_CREATE				12
#define OPCODE_COMMON_EQ_CREATE				13
#define OPCODE_COMMON_MCC_CREATE        		21
#define OPCODE_COMMON_GET_CNTL_ATTRIBUTES               32
#define OPCODE_COMMON_GET_FW_VERSION			35
#define OPCODE_COMMON_MODIFY_EQ_DELAY			41
#define OPCODE_COMMON_FIRMWARE_CONFIG			42
#define OPCODE_COMMON_MCC_DESTROY        		53
#define OPCODE_COMMON_CQ_DESTROY        		54
#define OPCODE_COMMON_EQ_DESTROY        		55
#define OPCODE_COMMON_QUERY_FIRMWARE_CONFIG		58
#define OPCODE_COMMON_FUNCTION_RESET			61

/**
 * LIST of opcodes that are common between Initiator and Target
 * used by CMD_SUBSYSTEM_ISCSI
 * These opcodes are unique for each subsystem defined above
 */
#define OPCODE_COMMON_ISCSI_CFG_POST_SGL_PAGES		2
#define OPCODE_COMMON_ISCSI_CFG_REMOVE_SGL_PAGES        3
#define OPCODE_COMMON_ISCSI_NTWK_GET_NIC_CONFIG		7
#define OPCODE_COMMON_ISCSI_SET_FRAGNUM_BITS_FOR_SGL_CRA 61
#define OPCODE_COMMON_ISCSI_DEFQ_CREATE                 64
#define OPCODE_COMMON_ISCSI_DEFQ_DESTROY 		65
#define OPCODE_COMMON_ISCSI_WRBQ_CREATE			66
#define OPCODE_COMMON_ISCSI_WRBQ_DESTROY 		67

struct be_cmd_req_hdr {
	u8 opcode;		/* dword 0 */
	u8 subsystem;		/* dword 0 */
	u8 port_number;		/* dword 0 */
	u8 domain;		/* dword 0 */
	u32 timeout;		/* dword 1 */
	u32 request_length;	/* dword 2 */
	u32 rsvd0;		/* dword 3 */
};

struct be_cmd_resp_hdr {
	u32 info;		/* dword 0 */
	u32 status;		/* dword 1 */
	u32 response_length;	/* dword 2 */
	u32 actual_resp_len;	/* dword 3 */
};

struct phys_addr {
	u32 lo;
	u32 hi;
};

/**************************
 * BE Command definitions *
 **************************/

/**
 * Pseudo amap definition in which each bit of the actual structure is defined
 * as a byte - used to calculate offset/shift/mask of each field
 */
struct amap_eq_context {
	u8 cidx[13];		/* dword 0 */
	u8 rsvd0[3];		/* dword 0 */
	u8 epidx[13];		/* dword 0 */
	u8 valid;		/* dword 0 */
	u8 rsvd1;		/* dword 0 */
	u8 size;		/* dword 0 */
	u8 pidx[13];		/* dword 1 */
	u8 rsvd2[3];		/* dword 1 */
	u8 pd[10];		/* dword 1 */
	u8 count[3];		/* dword 1 */
	u8 solevent;		/* dword 1 */
	u8 stalled;		/* dword 1 */
	u8 armed;		/* dword 1 */
	u8 rsvd3[4];		/* dword 2 */
	u8 func[8];		/* dword 2 */
	u8 rsvd4;		/* dword 2 */
	u8 delaymult[10];	/* dword 2 */
	u8 rsvd5[2];		/* dword 2 */
	u8 phase[2];		/* dword 2 */
	u8 nodelay;		/* dword 2 */
	u8 rsvd6[4];		/* dword 2 */
	u8 rsvd7[32];		/* dword 3 */
} __packed;

struct be_cmd_req_eq_create {
	struct be_cmd_req_hdr hdr;	/* dw[4] */
	u16 num_pages;		/* sword */
	u16 rsvd0;		/* sword */
	u8 context[sizeof(struct amap_eq_context) / 8];	/* dw[4] */
	struct phys_addr pages[8];
} __packed;

struct be_cmd_resp_eq_create {
	struct be_cmd_resp_hdr resp_hdr;
	u16 eq_id;		/* sword */
	u16 rsvd0;		/* sword */
} __packed;

struct mac_addr {
	u16 size_of_struct;
	u8 addr[ETH_ALEN];
} __packed;

struct be_cmd_req_mac_query {
	struct be_cmd_req_hdr hdr;
	u8 type;
	u8 permanent;
	u16 if_id;
} __packed;

struct be_cmd_resp_mac_query {
	struct be_cmd_resp_hdr hdr;
	struct mac_addr mac;
};

/******************** Create CQ ***************************/
/**
 * Pseudo amap definition in which each bit of the actual structure is defined
 * as a byte - used to calculate offset/shift/mask of each field
 */
struct amap_cq_context {
	u8 cidx[11];		/* dword 0 */
	u8 rsvd0;		/* dword 0 */
	u8 coalescwm[2];	/* dword 0 */
	u8 nodelay;		/* dword 0 */
	u8 epidx[11];		/* dword 0 */
	u8 rsvd1;		/* dword 0 */
	u8 count[2];		/* dword 0 */
	u8 valid;		/* dword 0 */
	u8 solevent;		/* dword 0 */
	u8 eventable;		/* dword 0 */
	u8 pidx[11];		/* dword 1 */
	u8 rsvd2;		/* dword 1 */
	u8 pd[10];		/* dword 1 */
	u8 eqid[8];		/* dword 1 */
	u8 stalled;		/* dword 1 */
	u8 armed;		/* dword 1 */
	u8 rsvd3[4];		/* dword 2 */
	u8 func[8];		/* dword 2 */
	u8 rsvd4[20];		/* dword 2 */
	u8 rsvd5[32];		/* dword 3 */
} __packed;

struct be_cmd_req_cq_create {
	struct be_cmd_req_hdr hdr;
	u16 num_pages;
	u16 rsvd0;
	u8 context[sizeof(struct amap_cq_context) / 8];
	struct phys_addr pages[4];
} __packed;

struct be_cmd_resp_cq_create {
	struct be_cmd_resp_hdr hdr;
	u16 cq_id;
	u16 rsvd0;
} __packed;

/******************** Create MCCQ ***************************/
/**
 * Pseudo amap definition in which each bit of the actual structure is defined
 * as a byte - used to calculate offset/shift/mask of each field
 */
struct amap_mcc_context {
	u8 con_index[14];
	u8 rsvd0[2];
	u8 ring_size[4];
	u8 fetch_wrb;
	u8 fetch_r2t;
	u8 cq_id[10];
	u8 prod_index[14];
	u8 fid[8];
	u8 pdid[9];
	u8 valid;
	u8 rsvd1[32];
	u8 rsvd2[32];
} __packed;

struct be_cmd_req_mcc_create {
	struct be_cmd_req_hdr hdr;
	u16 num_pages;
	u16 rsvd0;
	u8 context[sizeof(struct amap_mcc_context) / 8];
	struct phys_addr pages[8];
} __packed;

struct be_cmd_resp_mcc_create {
	struct be_cmd_resp_hdr hdr;
	u16 id;
	u16 rsvd0;
} __packed;

/******************** Q Destroy  ***************************/
/* Type of Queue to be destroyed */
enum {
	QTYPE_EQ = 1,
	QTYPE_CQ,
	QTYPE_MCCQ,
	QTYPE_WRBQ,
	QTYPE_DPDUQ,
	QTYPE_SGL
};

struct be_cmd_req_q_destroy {
	struct be_cmd_req_hdr hdr;
	u16 id;
	u16 bypass_flush;	/* valid only for rx q destroy */
} __packed;

struct macaddr {
	u8 byte[ETH_ALEN];
};

struct be_cmd_req_mcast_mac_config {
	struct be_cmd_req_hdr hdr;
	u16 num_mac;
	u8 promiscuous;
	u8 interface_id;
	struct macaddr mac[32];
} __packed;

static inline void *embedded_payload(struct be_mcc_wrb *wrb)
{
	return wrb->payload.embedded_payload;
}

static inline struct be_sge *nonembedded_sgl(struct be_mcc_wrb *wrb)
{
	return &wrb->payload.sgl[0];
}

/******************** Modify EQ Delay *******************/
struct be_cmd_req_modify_eq_delay {
	struct be_cmd_req_hdr hdr;
	u32 num_eq;
	struct {
		u32 eq_id;
		u32 phase;
		u32 delay_multiplier;
	} delay[8];
} __packed;

/******************** Get MAC ADDR *******************/

#define ETH_ALEN	6

struct be_cmd_req_get_mac_addr {
	struct be_cmd_req_hdr hdr;
	u32 nic_port_count;
	u32 speed;
	u32 max_speed;
	u32 link_state;
	u32 max_frame_size;
	u16 size_of_structure;
	u8 mac_address[ETH_ALEN];
	u32 rsvd[23];
};

struct be_cmd_resp_get_mac_addr {
	struct be_cmd_resp_hdr hdr;
	u32 nic_port_count;
	u32 speed;
	u32 max_speed;
	u32 link_state;
	u32 max_frame_size;
	u16 size_of_structure;
	u8 mac_address[6];
	u32 rsvd[23];
};

int beiscsi_cmd_eq_create(struct be_ctrl_info *ctrl,
			  struct be_queue_info *eq, int eq_delay);

int beiscsi_cmd_cq_create(struct be_ctrl_info *ctrl,
			  struct be_queue_info *cq, struct be_queue_info *eq,
			  bool sol_evts, bool no_delay,
			  int num_cqe_dma_coalesce);

int beiscsi_cmd_q_destroy(struct be_ctrl_info *ctrl, struct be_queue_info *q,
			  int type);
int beiscsi_cmd_mccq_create(struct beiscsi_hba *phba,
			struct be_queue_info *mccq,
			struct be_queue_info *cq);

int be_poll_mcc(struct be_ctrl_info *ctrl);
unsigned char mgmt_check_supported_fw(struct be_ctrl_info *ctrl,
				      struct beiscsi_hba *phba);
unsigned int be_cmd_get_mac_addr(struct beiscsi_hba *phba);
void free_mcc_tag(struct be_ctrl_info *ctrl, unsigned int tag);
/*ISCSI Functuions */
int be_cmd_fw_initialize(struct be_ctrl_info *ctrl);

struct be_mcc_wrb *wrb_from_mbox(struct be_dma_mem *mbox_mem);
struct be_mcc_wrb *wrb_from_mccq(struct beiscsi_hba *phba);
int be_mcc_notify_wait(struct beiscsi_hba *phba);
void be_mcc_notify(struct beiscsi_hba *phba);
unsigned int alloc_mcc_tag(struct beiscsi_hba *phba);
void beiscsi_async_link_state_process(struct beiscsi_hba *phba,
		struct be_async_event_link_state *evt);
int be_mcc_compl_process_isr(struct be_ctrl_info *ctrl,
				    struct be_mcc_compl *compl);

int be_mbox_notify(struct be_ctrl_info *ctrl);

int be_cmd_create_default_pdu_queue(struct be_ctrl_info *ctrl,
				    struct be_queue_info *cq,
				    struct be_queue_info *dq, int length,
				    int entry_size);

int be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info *ctrl,
				struct be_dma_mem *q_mem, u32 page_offset,
				u32 num_pages);

int be_cmd_wrbq_create(struct be_ctrl_info *ctrl, struct be_dma_mem *q_mem,
		       struct be_queue_info *wrbq);

bool is_link_state_evt(u32 trailer);

struct be_default_pdu_context {
	u32 dw[4];
} __packed;

struct amap_be_default_pdu_context {
	u8 dbuf_cindex[13];	/* dword 0 */
	u8 rsvd0[3];		/* dword 0 */
	u8 ring_size[4];	/* dword 0 */
	u8 ring_state[4];	/* dword 0 */
	u8 rsvd1[8];		/* dword 0 */
	u8 dbuf_pindex[13];	/* dword 1 */
	u8 rsvd2;		/* dword 1 */
	u8 pci_func_id[8];	/* dword 1 */
	u8 rx_pdid[9];		/* dword 1 */
	u8 rx_pdid_valid;	/* dword 1 */
	u8 default_buffer_size[16];	/* dword 2 */
	u8 cq_id_recv[10];	/* dword 2 */
	u8 rx_pdid_not_valid;	/* dword 2 */
	u8 rsvd3[5];		/* dword 2 */
	u8 rsvd4[32];		/* dword 3 */
} __packed;

struct be_defq_create_req {
	struct be_cmd_req_hdr hdr;
	u16 num_pages;
	u8 ulp_num;
	u8 rsvd0;
	struct be_default_pdu_context context;
	struct phys_addr pages[8];
} __packed;

struct be_defq_create_resp {
	struct be_cmd_req_hdr hdr;
	u16 id;
	u16 rsvd0;
} __packed;

struct be_post_sgl_pages_req {
	struct be_cmd_req_hdr hdr;
	u16 num_pages;
	u16 page_offset;
	u32 rsvd0;
	struct phys_addr pages[26];
	u32 rsvd1;
} __packed;

struct be_wrbq_create_req {
	struct be_cmd_req_hdr hdr;
	u16 num_pages;
	u8 ulp_num;
	u8 rsvd0;
	struct phys_addr pages[8];
} __packed;

struct be_wrbq_create_resp {
	struct be_cmd_resp_hdr resp_hdr;
	u16 cid;
	u16 rsvd0;
} __packed;

#define SOL_CID_MASK		0x0000FFC0
#define SOL_CODE_MASK		0x0000003F
#define SOL_WRB_INDEX_MASK	0x00FF0000
#define SOL_CMD_WND_MASK	0xFF000000
#define SOL_RES_CNT_MASK	0x7FFFFFFF
#define SOL_EXP_CMD_SN_MASK	0xFFFFFFFF
#define SOL_HW_STS_MASK		0x000000FF
#define SOL_STS_MASK		0x0000FF00
#define SOL_RESP_MASK		0x00FF0000
#define SOL_FLAGS_MASK		0x7F000000
#define SOL_S_MASK		0x80000000

struct sol_cqe {
	u32 dw[4];
};

struct amap_sol_cqe {
	u8 hw_sts[8];		/* dword 0 */
	u8 i_sts[8];		/* dword 0 */
	u8 i_resp[8];		/* dword 0 */
	u8 i_flags[7];		/* dword 0 */
	u8 s;			/* dword 0 */
	u8 i_exp_cmd_sn[32];	/* dword 1 */
	u8 code[6];		/* dword 2 */
	u8 cid[10];		/* dword 2 */
	u8 wrb_index[8];	/* dword 2 */
	u8 i_cmd_wnd[8];	/* dword 2 */
	u8 i_res_cnt[31];	/* dword 3 */
	u8 valid;		/* dword 3 */
} __packed;

#define SOL_ICD_INDEX_MASK	0x0003FFC0
struct amap_sol_cqe_ring {
	u8 hw_sts[8];		/* dword 0 */
	u8 i_sts[8];		/* dword 0 */
	u8 i_resp[8];		/* dword 0 */
	u8 i_flags[7];		/* dword 0 */
	u8 s;			/* dword 0 */
	u8 i_exp_cmd_sn[32];	/* dword 1 */
	u8 code[6];		/* dword 2 */
	u8 icd_index[12];	/* dword 2 */
	u8 rsvd[6];		/* dword 2 */
	u8 i_cmd_wnd[8];	/* dword 2 */
	u8 i_res_cnt[31];	/* dword 3 */
	u8 valid;		/* dword 3 */
} __packed;



/**
 * Post WRB Queue Doorbell Register used by the host Storage
 * stack to notify the
 * controller of a posted Work Request Block
 */
#define DB_WRB_POST_CID_MASK		0x3FF	/* bits 0 - 9 */
#define DB_DEF_PDU_WRB_INDEX_MASK	0xFF	/* bits 0 - 9 */

#define DB_DEF_PDU_WRB_INDEX_SHIFT	16
#define DB_DEF_PDU_NUM_POSTED_SHIFT	24

struct fragnum_bits_for_sgl_cra_in {
	struct be_cmd_req_hdr hdr;
	u32 num_bits;
} __packed;

struct iscsi_cleanup_req {
	struct be_cmd_req_hdr hdr;
	u16 chute;
	u8 hdr_ring_id;
	u8 data_ring_id;

} __packed;

struct eq_delay {
	u32 eq_id;
	u32 phase;
	u32 delay_multiplier;
} __packed;

struct be_eq_delay_params_in {
	struct be_cmd_req_hdr hdr;
	u32 num_eq;
	struct eq_delay delay[8];
} __packed;

struct ip_address_format {
	u16 size_of_structure;
	u8 reserved;
	u8 ip_type;
	u8 ip_address[16];
	u32 rsvd0;
} __packed;

struct tcp_connect_and_offload_in {
	struct be_cmd_req_hdr hdr;
	struct ip_address_format ip_address;
	u16 tcp_port;
	u16 cid;
	u16 cq_id;
	u16 defq_id;
	struct phys_addr dataout_template_pa;
	u16 hdr_ring_id;
	u16 data_ring_id;
	u8 do_offload;
	u8 rsvd0[3];
} __packed;

struct tcp_connect_and_offload_out {
	struct be_cmd_resp_hdr hdr;
	u32 connection_handle;
	u16 cid;
	u16 rsvd0;

} __packed;

struct be_mcc_wrb_context {
	struct MCC_WRB *wrb;
	int *users_final_status;
} __packed;

#define DB_DEF_PDU_RING_ID_MASK		0x3FF	/* bits 0 - 9 */
#define DB_DEF_PDU_CQPROC_MASK		0x3FFF	/* bits 0 - 9 */
#define DB_DEF_PDU_REARM_SHIFT		14
#define DB_DEF_PDU_EVENT_SHIFT		15
#define DB_DEF_PDU_CQPROC_SHIFT		16

struct dmsg_cqe {
	u32 dw[4];
} __packed;

struct tcp_upload_params_in {
	struct be_cmd_req_hdr hdr;
	u16 id;
	u16 upload_type;
	u32 reset_seq;
} __packed;

struct tcp_upload_params_out {
	u32 dw[32];
} __packed;

union tcp_upload_params {
	struct tcp_upload_params_in request;
	struct tcp_upload_params_out response;
} __packed;

struct be_ulp_fw_cfg {
	u32 ulp_mode;
	u32 etx_base;
	u32 etx_count;
	u32 sq_base;
	u32 sq_count;
	u32 rq_base;
	u32 rq_count;
	u32 dq_base;
	u32 dq_count;
	u32 lro_base;
	u32 lro_count;
	u32 icd_base;
	u32 icd_count;
};

struct be_fw_cfg {
	struct be_cmd_req_hdr hdr;
	u32 be_config_number;
	u32 asic_revision;
	u32 phys_port;
	u32 function_mode;
	struct be_ulp_fw_cfg ulp[2];
	u32 function_caps;
} __packed;

#define CMD_ISCSI_COMMAND_INVALIDATE  1
#define ISCSI_OPCODE_SCSI_DATA_OUT      5
#define OPCODE_COMMON_ISCSI_TCP_CONNECT_AND_OFFLOAD 70
#define OPCODE_ISCSI_INI_DRIVER_OFFLOAD_SESSION 41
#define OPCODE_COMMON_MODIFY_EQ_DELAY	41
#define OPCODE_COMMON_ISCSI_CLEANUP	59
#define	OPCODE_COMMON_TCP_UPLOAD	56
#define OPCODE_COMMON_ISCSI_ERROR_RECOVERY_INVALIDATE_COMMANDS 1
/* --- CMD_ISCSI_INVALIDATE_CONNECTION_TYPE --- */
#define CMD_ISCSI_CONNECTION_INVALIDATE 0x8001
#define CMD_ISCSI_CONNECTION_ISSUE_TCP_RST 0x8002
#define OPCODE_ISCSI_INI_DRIVER_INVALIDATE_CONNECTION 42

#define INI_WR_CMD			1	/* Initiator write command */
#define INI_TMF_CMD			2	/* Initiator TMF command */
#define INI_NOPOUT_CMD			3	/* Initiator; Send a NOP-OUT */
#define INI_RD_CMD			5	/* Initiator requesting to send
						 * a read command
						 */
#define TGT_CTX_UPDT_CMD		7	/* Target context update */
#define TGT_STS_CMD			8	/* Target R2T and other BHS
						 * where only the status number
						 * need to be updated
						 */
#define TGT_DATAIN_CMD			9	/* Target Data-Ins in response
						 * to read command
						 */
#define TGT_SOS_PDU			10	/* Target:standalone status
						 * response
						 */
#define TGT_DM_CMD			11	/* Indicates that the bhs
						 *  preparedby
						 * driver should not be touched
						 */
/* --- CMD_CHUTE_TYPE --- */
#define CMD_CONNECTION_CHUTE_0		1
#define CMD_CONNECTION_CHUTE_1		2
#define CMD_CONNECTION_CHUTE_2		3

#define EQ_MAJOR_CODE_COMPLETION	0

#define CMD_ISCSI_SESSION_DEL_CFG_FROM_FLASH 0
#define CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH 1

/* --- CONNECTION_UPLOAD_PARAMS --- */
/* These parameters are used to define the type of upload desired.  */
#define CONNECTION_UPLOAD_GRACEFUL      1	/* Graceful upload  */
#define CONNECTION_UPLOAD_ABORT_RESET   2	/* Abortive upload with
						 * reset
						 */
#define CONNECTION_UPLOAD_ABORT		3	/* Abortive upload without
						 * reset
						 */
#define CONNECTION_UPLOAD_ABORT_WITH_SEQ 4	/* Abortive upload with reset,
						 * sequence number by driver  */

/* Returns byte size of given field with a structure. */

/* Returns the number of items in the field array. */
#define BE_NUMBER_OF_FIELD(_type_, _field_)	\
	(FIELD_SIZEOF(_type_, _field_)/sizeof((((_type_ *)0)->_field_[0])))\

/**
 * Different types of iSCSI completions to host driver for both initiator
 * and taget mode
 * of operation.
 */
#define SOL_CMD_COMPLETE		1	/* Solicited command completed
						 * normally
						 */
#define SOL_CMD_KILLED_DATA_DIGEST_ERR  2	/* Solicited command got
						 * invalidated internally due
						 * to Data Digest error
						 */
#define CXN_KILLED_PDU_SIZE_EXCEEDS_DSL 3	/* Connection got invalidated
						 * internally
						 * due to a recieved PDU
						 * size > DSL
						 */
#define CXN_KILLED_BURST_LEN_MISMATCH   4	/* Connection got invalidated
						 * internally due ti received
						 * PDU sequence size >
						 * FBL/MBL.
						 */
#define CXN_KILLED_AHS_RCVD		5	/* Connection got invalidated
						 * internally due to a recieved
						 * PDU Hdr that has
						 * AHS */
#define CXN_KILLED_HDR_DIGEST_ERR	6	/* Connection got invalidated
						 * internally due to Hdr Digest
						 * error
						 */
#define CXN_KILLED_UNKNOWN_HDR		7	/* Connection got invalidated
						 *  internally
						 * due to a bad opcode in the
						 * pdu hdr
						 */
#define CXN_KILLED_STALE_ITT_TTT_RCVD	8	/* Connection got invalidated
						 * internally due to a recieved
						 * ITT/TTT that does not belong
						 * to this Connection
						 */
#define CXN_KILLED_INVALID_ITT_TTT_RCVD 9	/* Connection got invalidated
						 * internally due to recieved
						 * ITT/TTT value > Max
						 * Supported ITTs/TTTs
						 */
#define CXN_KILLED_RST_RCVD		10	/* Connection got invalidated
						 * internally due to an
						 * incoming TCP RST
						 */
#define CXN_KILLED_TIMED_OUT		11	/* Connection got invalidated
						 * internally due to timeout on
						 * tcp segment 12 retransmit
						 * attempts failed
						 */
#define CXN_KILLED_RST_SENT		12	/* Connection got invalidated
						 * internally due to TCP RST
						 * sent by the Tx side
						 */
#define CXN_KILLED_FIN_RCVD		13	/* Connection got invalidated
						 * internally due to an
						 * incoming TCP FIN.
						 */
#define CXN_KILLED_BAD_UNSOL_PDU_RCVD	14	/* Connection got invalidated
						 * internally due to bad
						 * unsolicited PDU Unsolicited
						 * PDUs are PDUs with
						 * ITT=0xffffffff
						 */
#define CXN_KILLED_BAD_WRB_INDEX_ERROR	15	/* Connection got invalidated
						 * internally due to bad WRB
						 * index.
						 */
#define CXN_KILLED_OVER_RUN_RESIDUAL	16	/* Command got invalidated
						 * internally due to recived
						 * command has residual
						 * over run bytes.
						 */
#define CXN_KILLED_UNDER_RUN_RESIDUAL	17	/* Command got invalidated
						 * internally due to recived
						 * command has residual under
						 * run bytes.
						 */
#define CMD_KILLED_INVALID_STATSN_RCVD	18	/* Command got invalidated
						 * internally due to a recieved
						 * PDU has an invalid StatusSN
						 */
#define CMD_KILLED_INVALID_R2T_RCVD	19	/* Command got invalidated
						 * internally due to a recieved
						 * an R2T with some invalid
						 * fields in it
						 */
#define CMD_CXN_KILLED_LUN_INVALID	20	/* Command got invalidated
						 * internally due to received
						 * PDU has an invalid LUN.
						 */
#define CMD_CXN_KILLED_ICD_INVALID	21	/* Command got invalidated
						 * internally due to the
						 * corresponding ICD not in a
						 * valid state
						 */
#define CMD_CXN_KILLED_ITT_INVALID	22	/* Command got invalidated due
						 *  to received PDU has an
						 *  invalid ITT.
						 */
#define CMD_CXN_KILLED_SEQ_OUTOFORDER	23	/* Command got invalidated due
						 * to received sequence buffer
						 * offset is out of order.
						 */
#define CMD_CXN_KILLED_INVALID_DATASN_RCVD 24	/* Command got invalidated
						 * internally due to a
						 * recieved PDU has an invalid
						 * DataSN
						 */
#define CXN_INVALIDATE_NOTIFY		25	/* Connection invalidation
						 * completion notify.
						 */
#define CXN_INVALIDATE_INDEX_NOTIFY	26	/* Connection invalidation
						 * completion
						 * with data PDU index.
						 */
#define CMD_INVALIDATED_NOTIFY		27	/* Command invalidation
						 * completionnotifify.
						 */
#define UNSOL_HDR_NOTIFY		28	/* Unsolicited header notify.*/
#define UNSOL_DATA_NOTIFY		29	/* Unsolicited data notify.*/
#define UNSOL_DATA_DIGEST_ERROR_NOTIFY 	30	/* Unsolicited data digest
						 * error notify.
						 */
#define DRIVERMSG_NOTIFY		31	/* TCP acknowledge based
						 * notification.
						 */
#define CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN 32 /* Connection got invalidated
						  * internally due to command
						  * and data are not on same
						  * connection.
						  */
#define SOL_CMD_KILLED_DIF_ERR		33	/* Solicited command got
						 *  invalidated internally due
						 *  to DIF error
						 */
#define CXN_KILLED_SYN_RCVD		34	/* Connection got invalidated
						 * internally due to incoming
						 * TCP SYN
						 */
#define CXN_KILLED_IMM_DATA_RCVD	35	/* Connection got invalidated
						 * internally due to an
						 * incoming Unsolicited PDU
						 * that has immediate data on
						 * the cxn
						 */

void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, int payload_len,
			bool embedded, u8 sge_cnt);

void be_cmd_hdr_prepare(struct be_cmd_req_hdr *req_hdr,
			u8 subsystem, u8 opcode, int cmd_len);

#endif /* !BEISCSI_CMDS_H */