769 строки
22 KiB
C
769 строки
22 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright 2008 Cisco Systems, Inc. All rights reserved.
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* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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*/
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#ifndef _FCPIO_H_
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#define _FCPIO_H_
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#include <linux/if_ether.h>
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/*
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* This header file includes all of the data structures used for
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* communication by the host driver to the fcp firmware.
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*/
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/*
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* Exchange and sequence id space allocated to the host driver
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*/
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#define FCPIO_HOST_EXCH_RANGE_START 0x1000
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#define FCPIO_HOST_EXCH_RANGE_END 0x1fff
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#define FCPIO_HOST_SEQ_ID_RANGE_START 0x80
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#define FCPIO_HOST_SEQ_ID_RANGE_END 0xff
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/*
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* Command entry type
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*/
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enum fcpio_type {
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/*
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* Initiator request types
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*/
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FCPIO_ICMND_16 = 0x1,
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FCPIO_ICMND_32,
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FCPIO_ICMND_CMPL,
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FCPIO_ITMF,
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FCPIO_ITMF_CMPL,
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/*
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* Target request types
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*/
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FCPIO_TCMND_16 = 0x11,
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FCPIO_TCMND_32,
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FCPIO_TDATA,
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FCPIO_TXRDY,
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FCPIO_TRSP,
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FCPIO_TDRSP_CMPL,
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FCPIO_TTMF,
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FCPIO_TTMF_ACK,
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FCPIO_TABORT,
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FCPIO_TABORT_CMPL,
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/*
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* Misc request types
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*/
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FCPIO_ACK = 0x20,
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FCPIO_RESET,
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FCPIO_RESET_CMPL,
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FCPIO_FLOGI_REG,
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FCPIO_FLOGI_REG_CMPL,
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FCPIO_ECHO,
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FCPIO_ECHO_CMPL,
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FCPIO_LUNMAP_CHNG,
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FCPIO_LUNMAP_REQ,
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FCPIO_LUNMAP_REQ_CMPL,
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FCPIO_FLOGI_FIP_REG,
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FCPIO_FLOGI_FIP_REG_CMPL,
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};
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/*
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* Header status codes from the firmware
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*/
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enum fcpio_status {
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FCPIO_SUCCESS = 0, /* request was successful */
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/*
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* If a request to the firmware is rejected, the original request
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* header will be returned with the status set to one of the following:
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*/
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FCPIO_INVALID_HEADER, /* header contains invalid data */
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FCPIO_OUT_OF_RESOURCE, /* out of resources to complete request */
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FCPIO_INVALID_PARAM, /* some parameter in request is invalid */
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FCPIO_REQ_NOT_SUPPORTED, /* request type is not supported */
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FCPIO_IO_NOT_FOUND, /* requested I/O was not found */
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/*
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* Once a request is processed, the firmware will usually return
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* a cmpl message type. In cases where errors occurred,
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* the header status field would be filled in with one of the following:
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*/
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FCPIO_ABORTED = 0x41, /* request was aborted */
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FCPIO_TIMEOUT, /* request was timed out */
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FCPIO_SGL_INVALID, /* request was aborted due to sgl error */
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FCPIO_MSS_INVALID, /* request was aborted due to mss error */
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FCPIO_DATA_CNT_MISMATCH, /* recv/sent more/less data than exp. */
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FCPIO_FW_ERR, /* request was terminated due to fw error */
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FCPIO_ITMF_REJECTED, /* itmf req was rejected by remote node */
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FCPIO_ITMF_FAILED, /* itmf req was failed by remote node */
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FCPIO_ITMF_INCORRECT_LUN, /* itmf req targeted incorrect LUN */
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FCPIO_CMND_REJECTED, /* request was invalid and rejected */
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FCPIO_NO_PATH_AVAIL, /* no paths to the lun was available */
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FCPIO_PATH_FAILED, /* i/o sent to current path failed */
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FCPIO_LUNMAP_CHNG_PEND, /* i/o rejected due to lunmap change */
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};
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/*
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* The header command tag. All host requests will use the "tag" field
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* to mark commands with a unique tag. When the firmware responds to
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* a host request, it will copy the tag field into the response.
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*
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* The only firmware requests that will use the rx_id/ox_id fields instead
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* of the tag field will be the target command and target task management
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* requests. These two requests do not have corresponding host requests
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* since they come directly from the FC initiator on the network.
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*/
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struct fcpio_tag {
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union {
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u32 req_id;
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struct {
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u16 rx_id;
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u16 ox_id;
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} ex_id;
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} u;
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};
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static inline void
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fcpio_tag_id_enc(struct fcpio_tag *tag, u32 id)
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{
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tag->u.req_id = id;
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}
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static inline void
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fcpio_tag_id_dec(struct fcpio_tag *tag, u32 *id)
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{
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*id = tag->u.req_id;
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}
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static inline void
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fcpio_tag_exid_enc(struct fcpio_tag *tag, u16 ox_id, u16 rx_id)
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{
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tag->u.ex_id.rx_id = rx_id;
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tag->u.ex_id.ox_id = ox_id;
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}
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static inline void
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fcpio_tag_exid_dec(struct fcpio_tag *tag, u16 *ox_id, u16 *rx_id)
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{
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*rx_id = tag->u.ex_id.rx_id;
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*ox_id = tag->u.ex_id.ox_id;
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}
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/*
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* The header for an fcpio request, whether from the firmware or from the
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* host driver
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*/
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struct fcpio_header {
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u8 type; /* enum fcpio_type */
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u8 status; /* header status entry */
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u16 _resvd; /* reserved */
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struct fcpio_tag tag; /* header tag */
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};
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static inline void
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fcpio_header_enc(struct fcpio_header *hdr,
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u8 type, u8 status,
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struct fcpio_tag tag)
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{
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hdr->type = type;
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hdr->status = status;
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hdr->_resvd = 0;
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hdr->tag = tag;
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}
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static inline void
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fcpio_header_dec(struct fcpio_header *hdr,
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u8 *type, u8 *status,
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struct fcpio_tag *tag)
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{
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*type = hdr->type;
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*status = hdr->status;
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*tag = hdr->tag;
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}
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#define CDB_16 16
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#define CDB_32 32
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#define LUN_ADDRESS 8
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/*
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* fcpio_icmnd_16: host -> firmware request
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*
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* used for sending out an initiator SCSI 16-byte command
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*/
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struct fcpio_icmnd_16 {
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u32 lunmap_id; /* index into lunmap table */
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u8 special_req_flags; /* special exchange request flags */
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u8 _resvd0[3]; /* reserved */
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u32 sgl_cnt; /* scatter-gather list count */
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u32 sense_len; /* sense buffer length */
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u64 sgl_addr; /* scatter-gather list addr */
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u64 sense_addr; /* sense buffer address */
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u8 crn; /* SCSI Command Reference No. */
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u8 pri_ta; /* SCSI Priority and Task attribute */
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u8 _resvd1; /* reserved: should be 0 */
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u8 flags; /* command flags */
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u8 scsi_cdb[CDB_16]; /* SCSI Cmnd Descriptor Block */
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u32 data_len; /* length of data expected */
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u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
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u8 _resvd2; /* reserved */
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u8 d_id[3]; /* FC vNIC only: Target D_ID */
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u16 mss; /* FC vNIC only: max burst */
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u16 _resvd3; /* reserved */
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u32 r_a_tov; /* FC vNIC only: Res. Alloc Timeout */
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u32 e_d_tov; /* FC vNIC only: Err Detect Timeout */
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};
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/*
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* Special request flags
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*/
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#define FCPIO_ICMND_SRFLAG_RETRY 0x01 /* Enable Retry handling on exchange */
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/*
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* Priority/Task Attribute settings
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*/
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#define FCPIO_ICMND_PTA_SIMPLE 0 /* simple task attribute */
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#define FCPIO_ICMND_PTA_HEADQ 1 /* head of queue task attribute */
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#define FCPIO_ICMND_PTA_ORDERED 2 /* ordered task attribute */
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#define FCPIO_ICMND_PTA_ACA 4 /* auto contingent allegiance */
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#define FCPIO_ICMND_PRI_SHIFT 3 /* priority field starts in bit 3 */
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/*
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* Command flags
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*/
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#define FCPIO_ICMND_RDDATA 0x02 /* read data */
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#define FCPIO_ICMND_WRDATA 0x01 /* write data */
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/*
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* fcpio_icmnd_32: host -> firmware request
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*
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* used for sending out an initiator SCSI 32-byte command
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*/
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struct fcpio_icmnd_32 {
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u32 lunmap_id; /* index into lunmap table */
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u8 special_req_flags; /* special exchange request flags */
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u8 _resvd0[3]; /* reserved */
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u32 sgl_cnt; /* scatter-gather list count */
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u32 sense_len; /* sense buffer length */
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u64 sgl_addr; /* scatter-gather list addr */
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u64 sense_addr; /* sense buffer address */
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u8 crn; /* SCSI Command Reference No. */
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u8 pri_ta; /* SCSI Priority and Task attribute */
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u8 _resvd1; /* reserved: should be 0 */
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u8 flags; /* command flags */
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u8 scsi_cdb[CDB_32]; /* SCSI Cmnd Descriptor Block */
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u32 data_len; /* length of data expected */
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u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
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u8 _resvd2; /* reserved */
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u8 d_id[3]; /* FC vNIC only: Target D_ID */
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u16 mss; /* FC vNIC only: max burst */
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u16 _resvd3; /* reserved */
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u32 r_a_tov; /* FC vNIC only: Res. Alloc Timeout */
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u32 e_d_tov; /* FC vNIC only: Error Detect Timeout */
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};
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/*
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* fcpio_itmf: host -> firmware request
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*
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* used for requesting the firmware to abort a request and/or send out
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* a task management function
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*
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* The t_tag field is only needed when the request type is ABT_TASK.
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*/
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struct fcpio_itmf {
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u32 lunmap_id; /* index into lunmap table */
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u32 tm_req; /* SCSI Task Management request */
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u32 t_tag; /* header tag of fcpio to be aborted */
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u32 _resvd; /* _reserved */
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u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
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u8 _resvd1; /* reserved */
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u8 d_id[3]; /* FC vNIC only: Target D_ID */
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u32 r_a_tov; /* FC vNIC only: R_A_TOV in msec */
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u32 e_d_tov; /* FC vNIC only: E_D_TOV in msec */
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};
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/*
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* Task Management request
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*/
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enum fcpio_itmf_tm_req_type {
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FCPIO_ITMF_ABT_TASK_TERM = 0x01, /* abort task and terminate */
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FCPIO_ITMF_ABT_TASK, /* abort task and issue abts */
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FCPIO_ITMF_ABT_TASK_SET, /* abort task set */
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FCPIO_ITMF_CLR_TASK_SET, /* clear task set */
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FCPIO_ITMF_LUN_RESET, /* logical unit reset task mgmt */
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FCPIO_ITMF_CLR_ACA, /* Clear ACA condition */
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};
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/*
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* fcpio_tdata: host -> firmware request
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*
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* used for requesting the firmware to send out a read data transfer for a
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* target command
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*/
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struct fcpio_tdata {
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u16 rx_id; /* FC rx_id of target command */
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u16 flags; /* command flags */
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u32 rel_offset; /* data sequence relative offset */
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u32 sgl_cnt; /* scatter-gather list count */
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u32 data_len; /* length of data expected to send */
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u64 sgl_addr; /* scatter-gather list address */
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};
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/*
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* Command flags
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*/
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#define FCPIO_TDATA_SCSI_RSP 0x01 /* send a scsi resp. after last frame */
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/*
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* fcpio_txrdy: host -> firmware request
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*
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* used for requesting the firmware to send out a write data transfer for a
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* target command
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*/
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struct fcpio_txrdy {
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u16 rx_id; /* FC rx_id of target command */
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u16 _resvd0; /* reserved */
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u32 rel_offset; /* data sequence relative offset */
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u32 sgl_cnt; /* scatter-gather list count */
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u32 data_len; /* length of data expected to send */
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u64 sgl_addr; /* scatter-gather list address */
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};
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/*
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* fcpio_trsp: host -> firmware request
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*
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* used for requesting the firmware to send out a response for a target
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* command
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*/
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struct fcpio_trsp {
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u16 rx_id; /* FC rx_id of target command */
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u16 _resvd0; /* reserved */
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u32 sense_len; /* sense data buffer length */
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u64 sense_addr; /* sense data buffer address */
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u16 _resvd1; /* reserved */
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u8 flags; /* response request flags */
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u8 scsi_status; /* SCSI status */
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u32 residual; /* SCSI data residual value of I/O */
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};
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/*
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* resposnse request flags
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*/
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#define FCPIO_TRSP_RESID_UNDER 0x08 /* residual is valid and is underflow */
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#define FCPIO_TRSP_RESID_OVER 0x04 /* residual is valid and is overflow */
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/*
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* fcpio_ttmf_ack: host -> firmware response
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*
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* used by the host to indicate to the firmware it has received and processed
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* the target tmf request
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*/
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struct fcpio_ttmf_ack {
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u16 rx_id; /* FC rx_id of target command */
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u16 _resvd0; /* reserved */
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u32 tmf_status; /* SCSI task management status */
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};
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/*
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* fcpio_tabort: host -> firmware request
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*
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* used by the host to request the firmware to abort a target request that was
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* received by the firmware
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*/
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struct fcpio_tabort {
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u16 rx_id; /* rx_id of the target request */
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};
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/*
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* fcpio_reset: host -> firmware request
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*
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* used by the host to signal a reset of the driver to the firmware
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* and to request firmware to clean up all outstanding I/O
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*/
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struct fcpio_reset {
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u32 _resvd;
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};
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enum fcpio_flogi_reg_format_type {
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FCPIO_FLOGI_REG_DEF_DEST = 0, /* Use the oui | s_id mac format */
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FCPIO_FLOGI_REG_GW_DEST, /* Use the fixed gateway mac */
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};
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/*
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* fcpio_flogi_reg: host -> firmware request
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*
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* fc vnic only
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* used by the host to notify the firmware of the lif's s_id
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* and destination mac address format
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*/
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struct fcpio_flogi_reg {
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u8 format;
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u8 s_id[3]; /* FC vNIC only: Source S_ID */
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u8 gateway_mac[ETH_ALEN]; /* Destination gateway mac */
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u16 _resvd;
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u32 r_a_tov; /* R_A_TOV in msec */
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u32 e_d_tov; /* E_D_TOV in msec */
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};
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/*
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* fcpio_echo: host -> firmware request
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*
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* sends a heartbeat echo request to the firmware
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*/
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struct fcpio_echo {
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u32 _resvd;
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};
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/*
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* fcpio_lunmap_req: host -> firmware request
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*
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* scsi vnic only
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* sends a request to retrieve the lunmap table for scsi vnics
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*/
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struct fcpio_lunmap_req {
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u64 addr; /* address of the buffer */
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u32 len; /* len of the buffer */
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};
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/*
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* fcpio_flogi_fip_reg: host -> firmware request
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*
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* fc vnic only
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* used by the host to notify the firmware of the lif's s_id
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* and destination mac address format
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*/
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struct fcpio_flogi_fip_reg {
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u8 _resvd0;
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u8 s_id[3]; /* FC vNIC only: Source S_ID */
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u8 fcf_mac[ETH_ALEN]; /* FCF Target destination mac */
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u16 _resvd1;
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u32 r_a_tov; /* R_A_TOV in msec */
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u32 e_d_tov; /* E_D_TOV in msec */
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u8 ha_mac[ETH_ALEN]; /* Host adapter source mac */
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u16 _resvd2;
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};
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/*
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* Basic structure for all fcpio structures that are sent from the host to the
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* firmware. They are 128 bytes per structure.
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*/
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#define FCPIO_HOST_REQ_LEN 128 /* expected length of host requests */
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struct fcpio_host_req {
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struct fcpio_header hdr;
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union {
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/*
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* Defines space needed for request
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*/
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u8 buf[FCPIO_HOST_REQ_LEN - sizeof(struct fcpio_header)];
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/*
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* Initiator host requests
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*/
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struct fcpio_icmnd_16 icmnd_16;
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struct fcpio_icmnd_32 icmnd_32;
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struct fcpio_itmf itmf;
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/*
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* Target host requests
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*/
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struct fcpio_tdata tdata;
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struct fcpio_txrdy txrdy;
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struct fcpio_trsp trsp;
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struct fcpio_ttmf_ack ttmf_ack;
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struct fcpio_tabort tabort;
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/*
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* Misc requests
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*/
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struct fcpio_reset reset;
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struct fcpio_flogi_reg flogi_reg;
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struct fcpio_echo echo;
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struct fcpio_lunmap_req lunmap_req;
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struct fcpio_flogi_fip_reg flogi_fip_reg;
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} u;
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};
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/*
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* fcpio_icmnd_cmpl: firmware -> host response
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*
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* used for sending the host a response to an initiator command
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*/
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struct fcpio_icmnd_cmpl {
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u8 _resvd0[6]; /* reserved */
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u8 flags; /* response flags */
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u8 scsi_status; /* SCSI status */
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u32 residual; /* SCSI data residual length */
|
|
u32 sense_len; /* SCSI sense length */
|
|
};
|
|
|
|
/*
|
|
* response flags
|
|
*/
|
|
#define FCPIO_ICMND_CMPL_RESID_UNDER 0x08 /* resid under and valid */
|
|
#define FCPIO_ICMND_CMPL_RESID_OVER 0x04 /* resid over and valid */
|
|
|
|
/*
|
|
* fcpio_itmf_cmpl: firmware -> host response
|
|
*
|
|
* used for sending the host a response for a itmf request
|
|
*/
|
|
struct fcpio_itmf_cmpl {
|
|
u32 _resvd; /* reserved */
|
|
};
|
|
|
|
/*
|
|
* fcpio_tcmnd_16: firmware -> host request
|
|
*
|
|
* used by the firmware to notify the host of an incoming target SCSI 16-Byte
|
|
* request
|
|
*/
|
|
struct fcpio_tcmnd_16 {
|
|
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
|
|
u8 crn; /* SCSI Command Reference No. */
|
|
u8 pri_ta; /* SCSI Priority and Task attribute */
|
|
u8 _resvd2; /* reserved: should be 0 */
|
|
u8 flags; /* command flags */
|
|
u8 scsi_cdb[CDB_16]; /* SCSI Cmnd Descriptor Block */
|
|
u32 data_len; /* length of data expected */
|
|
u8 _resvd1; /* reserved */
|
|
u8 s_id[3]; /* FC vNIC only: Source S_ID */
|
|
};
|
|
|
|
/*
|
|
* Priority/Task Attribute settings
|
|
*/
|
|
#define FCPIO_TCMND_PTA_SIMPLE 0 /* simple task attribute */
|
|
#define FCPIO_TCMND_PTA_HEADQ 1 /* head of queue task attribute */
|
|
#define FCPIO_TCMND_PTA_ORDERED 2 /* ordered task attribute */
|
|
#define FCPIO_TCMND_PTA_ACA 4 /* auto contingent allegiance */
|
|
#define FCPIO_TCMND_PRI_SHIFT 3 /* priority field starts in bit 3 */
|
|
|
|
/*
|
|
* Command flags
|
|
*/
|
|
#define FCPIO_TCMND_RDDATA 0x02 /* read data */
|
|
#define FCPIO_TCMND_WRDATA 0x01 /* write data */
|
|
|
|
/*
|
|
* fcpio_tcmnd_32: firmware -> host request
|
|
*
|
|
* used by the firmware to notify the host of an incoming target SCSI 32-Byte
|
|
* request
|
|
*/
|
|
struct fcpio_tcmnd_32 {
|
|
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
|
|
u8 crn; /* SCSI Command Reference No. */
|
|
u8 pri_ta; /* SCSI Priority and Task attribute */
|
|
u8 _resvd2; /* reserved: should be 0 */
|
|
u8 flags; /* command flags */
|
|
u8 scsi_cdb[CDB_32]; /* SCSI Cmnd Descriptor Block */
|
|
u32 data_len; /* length of data expected */
|
|
u8 _resvd0; /* reserved */
|
|
u8 s_id[3]; /* FC vNIC only: Source S_ID */
|
|
};
|
|
|
|
/*
|
|
* fcpio_tdrsp_cmpl: firmware -> host response
|
|
*
|
|
* used by the firmware to notify the host of a response to a host target
|
|
* command
|
|
*/
|
|
struct fcpio_tdrsp_cmpl {
|
|
u16 rx_id; /* rx_id of the target request */
|
|
u16 _resvd0; /* reserved */
|
|
};
|
|
|
|
/*
|
|
* fcpio_ttmf: firmware -> host request
|
|
*
|
|
* used by the firmware to notify the host of an incoming task management
|
|
* function request
|
|
*/
|
|
struct fcpio_ttmf {
|
|
u8 _resvd0; /* reserved */
|
|
u8 s_id[3]; /* FC vNIC only: Source S_ID */
|
|
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
|
|
u8 crn; /* SCSI Command Reference No. */
|
|
u8 _resvd2[3]; /* reserved */
|
|
u32 tmf_type; /* task management request type */
|
|
};
|
|
|
|
/*
|
|
* Task Management request
|
|
*/
|
|
#define FCPIO_TTMF_CLR_ACA 0x40 /* Clear ACA condition */
|
|
#define FCPIO_TTMF_LUN_RESET 0x10 /* logical unit reset task mgmt */
|
|
#define FCPIO_TTMF_CLR_TASK_SET 0x04 /* clear task set */
|
|
#define FCPIO_TTMF_ABT_TASK_SET 0x02 /* abort task set */
|
|
#define FCPIO_TTMF_ABT_TASK 0x01 /* abort task */
|
|
|
|
/*
|
|
* fcpio_tabort_cmpl: firmware -> host response
|
|
*
|
|
* used by the firmware to respond to a host's tabort request
|
|
*/
|
|
struct fcpio_tabort_cmpl {
|
|
u16 rx_id; /* rx_id of the target request */
|
|
u16 _resvd0; /* reserved */
|
|
};
|
|
|
|
/*
|
|
* fcpio_ack: firmware -> host response
|
|
*
|
|
* used by firmware to notify the host of the last work request received
|
|
*/
|
|
struct fcpio_ack {
|
|
u16 request_out; /* last host entry received */
|
|
u16 _resvd;
|
|
};
|
|
|
|
/*
|
|
* fcpio_reset_cmpl: firmware -> host response
|
|
*
|
|
* use by firmware to respond to the host's reset request
|
|
*/
|
|
struct fcpio_reset_cmpl {
|
|
u16 vnic_id;
|
|
};
|
|
|
|
/*
|
|
* fcpio_flogi_reg_cmpl: firmware -> host response
|
|
*
|
|
* fc vnic only
|
|
* response to the fcpio_flogi_reg request
|
|
*/
|
|
struct fcpio_flogi_reg_cmpl {
|
|
u32 _resvd;
|
|
};
|
|
|
|
/*
|
|
* fcpio_echo_cmpl: firmware -> host response
|
|
*
|
|
* response to the fcpio_echo request
|
|
*/
|
|
struct fcpio_echo_cmpl {
|
|
u32 _resvd;
|
|
};
|
|
|
|
/*
|
|
* fcpio_lunmap_chng: firmware -> host notification
|
|
*
|
|
* scsi vnic only
|
|
* notifies the host that the lunmap tables have changed
|
|
*/
|
|
struct fcpio_lunmap_chng {
|
|
u32 _resvd;
|
|
};
|
|
|
|
/*
|
|
* fcpio_lunmap_req_cmpl: firmware -> host response
|
|
*
|
|
* scsi vnic only
|
|
* response for lunmap table request from the host
|
|
*/
|
|
struct fcpio_lunmap_req_cmpl {
|
|
u32 _resvd;
|
|
};
|
|
|
|
/*
|
|
* Basic structure for all fcpio structures that are sent from the firmware to
|
|
* the host. They are 64 bytes per structure.
|
|
*/
|
|
#define FCPIO_FW_REQ_LEN 64 /* expected length of fw requests */
|
|
struct fcpio_fw_req {
|
|
struct fcpio_header hdr;
|
|
|
|
union {
|
|
/*
|
|
* Defines space needed for request
|
|
*/
|
|
u8 buf[FCPIO_FW_REQ_LEN - sizeof(struct fcpio_header)];
|
|
|
|
/*
|
|
* Initiator firmware responses
|
|
*/
|
|
struct fcpio_icmnd_cmpl icmnd_cmpl;
|
|
struct fcpio_itmf_cmpl itmf_cmpl;
|
|
|
|
/*
|
|
* Target firmware new requests
|
|
*/
|
|
struct fcpio_tcmnd_16 tcmnd_16;
|
|
struct fcpio_tcmnd_32 tcmnd_32;
|
|
|
|
/*
|
|
* Target firmware responses
|
|
*/
|
|
struct fcpio_tdrsp_cmpl tdrsp_cmpl;
|
|
struct fcpio_ttmf ttmf;
|
|
struct fcpio_tabort_cmpl tabort_cmpl;
|
|
|
|
/*
|
|
* Firmware response to work received
|
|
*/
|
|
struct fcpio_ack ack;
|
|
|
|
/*
|
|
* Misc requests
|
|
*/
|
|
struct fcpio_reset_cmpl reset_cmpl;
|
|
struct fcpio_flogi_reg_cmpl flogi_reg_cmpl;
|
|
struct fcpio_echo_cmpl echo_cmpl;
|
|
struct fcpio_lunmap_chng lunmap_chng;
|
|
struct fcpio_lunmap_req_cmpl lunmap_req_cmpl;
|
|
} u;
|
|
};
|
|
|
|
/*
|
|
* Access routines to encode and decode the color bit, which is the most
|
|
* significant bit of the MSB of the structure
|
|
*/
|
|
static inline void fcpio_color_enc(struct fcpio_fw_req *fw_req, u8 color)
|
|
{
|
|
u8 *c = ((u8 *) fw_req) + sizeof(struct fcpio_fw_req) - 1;
|
|
|
|
if (color)
|
|
*c |= 0x80;
|
|
else
|
|
*c &= ~0x80;
|
|
}
|
|
|
|
static inline void fcpio_color_dec(struct fcpio_fw_req *fw_req, u8 *color)
|
|
{
|
|
u8 *c = ((u8 *) fw_req) + sizeof(struct fcpio_fw_req) - 1;
|
|
|
|
*color = *c >> 7;
|
|
|
|
/*
|
|
* Make sure color bit is read from desc *before* other fields
|
|
* are read from desc. Hardware guarantees color bit is last
|
|
* bit (byte) written. Adding the rmb() prevents the compiler
|
|
* and/or CPU from reordering the reads which would potentially
|
|
* result in reading stale values.
|
|
*/
|
|
|
|
rmb();
|
|
|
|
}
|
|
|
|
/*
|
|
* Lunmap table entry for scsi vnics
|
|
*/
|
|
#define FCPIO_LUNMAP_TABLE_SIZE 256
|
|
#define FCPIO_FLAGS_LUNMAP_VALID 0x80
|
|
#define FCPIO_FLAGS_BOOT 0x01
|
|
struct fcpio_lunmap_entry {
|
|
u8 bus;
|
|
u8 target;
|
|
u8 lun;
|
|
u8 path_cnt;
|
|
u16 flags;
|
|
u16 update_cnt;
|
|
};
|
|
|
|
struct fcpio_lunmap_tbl {
|
|
u32 update_cnt;
|
|
struct fcpio_lunmap_entry lunmaps[FCPIO_LUNMAP_TABLE_SIZE];
|
|
};
|
|
|
|
#endif /* _FCPIO_H_ */
|