diff options
Diffstat (limited to 'drivers/scsi/bfa/include/protocol/fcp.h')
| -rw-r--r-- | drivers/scsi/bfa/include/protocol/fcp.h | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/drivers/scsi/bfa/include/protocol/fcp.h b/drivers/scsi/bfa/include/protocol/fcp.h new file mode 100644 index 000000000000..9ade68ad2853 --- /dev/null +++ b/drivers/scsi/bfa/include/protocol/fcp.h @@ -0,0 +1,186 @@ +/* + * Copyright (c) 2005-2009 Brocade Communications Systems, Inc. + * All rights reserved + * www.brocade.com + * + * Linux driver for Brocade Fibre Channel Host Bus Adapter. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License (GPL) Version 2 as + * published by the Free Software Foundation + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +#ifndef __FCPPROTO_H__ +#define __FCPPROTO_H__ + +#include <protocol/scsi.h> + +#pragma pack(1) + +enum { + FCP_RJT = 0x01000000, /* SRR reject */ + FCP_SRR_ACCEPT = 0x02000000, /* SRR accept */ + FCP_SRR = 0x14000000, /* Sequence Retransmission Request */ +}; + +/* + * SRR FC-4 LS payload + */ +struct fc_srr_s{ + u32 ls_cmd; + u32 ox_id:16; /* ox-id */ + u32 rx_id:16; /* rx-id */ + u32 ro; /* relative offset */ + u32 r_ctl:8; /* R_CTL for I.U. */ + u32 res:24; +}; + + +/* + * FCP_CMND definitions + */ +#define FCP_CMND_CDB_LEN 16 +#define FCP_CMND_LUN_LEN 8 + +struct fcp_cmnd_s{ + lun_t lun; /* 64-bit LU number */ + u8 crn; /* command reference number */ +#ifdef __BIGENDIAN + u8 resvd:1, + priority:4, /* FCP-3: SAM-3 priority */ + taskattr:3; /* scsi task attribute */ +#else + u8 taskattr:3, /* scsi task attribute */ + priority:4, /* FCP-3: SAM-3 priority */ + resvd:1; +#endif + u8 tm_flags; /* task management flags */ +#ifdef __BIGENDIAN + u8 addl_cdb_len:6, /* additional CDB length words */ + iodir:2; /* read/write FCP_DATA IUs */ +#else + u8 iodir:2, /* read/write FCP_DATA IUs */ + addl_cdb_len:6; /* additional CDB length */ +#endif + struct scsi_cdb_s cdb; + + /* + * !!! additional cdb bytes follows here!!! + */ + u32 fcp_dl; /* bytes to be transferred */ +}; + +#define fcp_cmnd_cdb_len(_cmnd) ((_cmnd)->addl_cdb_len * 4 + FCP_CMND_CDB_LEN) +#define fcp_cmnd_fcpdl(_cmnd) ((&(_cmnd)->fcp_dl)[(_cmnd)->addl_cdb_len]) + +/* + * fcp_cmnd_t.iodir field values + */ +enum fcp_iodir{ + FCP_IODIR_NONE = 0, + FCP_IODIR_WRITE = 1, + FCP_IODIR_READ = 2, + FCP_IODIR_RW = 3, +}; + +/* + * Task attribute field + */ +enum { + FCP_TASK_ATTR_SIMPLE = 0, + FCP_TASK_ATTR_HOQ = 1, + FCP_TASK_ATTR_ORDERED = 2, + FCP_TASK_ATTR_ACA = 4, + FCP_TASK_ATTR_UNTAGGED = 5, /* obsolete in FCP-3 */ +}; + +/* + * Task management flags field - only one bit shall be set + */ +#ifndef BIT +#define BIT(_x) (1 << (_x)) +#endif +enum fcp_tm_cmnd{ + FCP_TM_ABORT_TASK_SET = BIT(1), + FCP_TM_CLEAR_TASK_SET = BIT(2), + FCP_TM_LUN_RESET = BIT(4), + FCP_TM_TARGET_RESET = BIT(5), /* obsolete in FCP-3 */ + FCP_TM_CLEAR_ACA = BIT(6), +}; + +/* + * FCP_XFER_RDY IU defines + */ +struct fcp_xfer_rdy_s{ + u32 data_ro; + u32 burst_len; + u32 reserved; +}; + +/* + * FCP_RSP residue flags + */ +enum fcp_residue{ + FCP_NO_RESIDUE = 0, /* no residue */ + FCP_RESID_OVER = 1, /* more data left that was not sent */ + FCP_RESID_UNDER = 2, /* less data than requested */ +}; + +enum { + FCP_RSPINFO_GOOD = 0, + FCP_RSPINFO_DATALEN_MISMATCH = 1, + FCP_RSPINFO_CMND_INVALID = 2, + FCP_RSPINFO_ROLEN_MISMATCH = 3, + FCP_RSPINFO_TM_NOT_SUPP = 4, + FCP_RSPINFO_TM_FAILED = 5, +}; + +struct fcp_rspinfo_s{ + u32 res0:24; + u32 rsp_code:8; /* response code (as above) */ + u32 res1; +}; + +struct fcp_resp_s{ + u32 reserved[2]; /* 2 words reserved */ + u16 reserved2; +#ifdef __BIGENDIAN + u8 reserved3:3; + u8 fcp_conf_req:1; /* FCP_CONF is requested */ + u8 resid_flags:2; /* underflow/overflow */ + u8 sns_len_valid:1;/* sense len is valid */ + u8 rsp_len_valid:1;/* response len is valid */ +#else + u8 rsp_len_valid:1;/* response len is valid */ + u8 sns_len_valid:1;/* sense len is valid */ + u8 resid_flags:2; /* underflow/overflow */ + u8 fcp_conf_req:1; /* FCP_CONF is requested */ + u8 reserved3:3; +#endif + u8 scsi_status; /* one byte SCSI status */ + u32 residue; /* residual data bytes */ + u32 sns_len; /* length od sense info */ + u32 rsp_len; /* length of response info */ +}; + +#define fcp_snslen(__fcprsp) ((__fcprsp)->sns_len_valid ? \ + (__fcprsp)->sns_len : 0) +#define fcp_rsplen(__fcprsp) ((__fcprsp)->rsp_len_valid ? \ + (__fcprsp)->rsp_len : 0) +#define fcp_rspinfo(__fcprsp) ((struct fcp_rspinfo_s *)((__fcprsp) + 1)) +#define fcp_snsinfo(__fcprsp) (((u8 *)fcp_rspinfo(__fcprsp)) + \ + fcp_rsplen(__fcprsp)) + +struct fcp_cmnd_fr_s{ + struct fchs_s fchs; + struct fcp_cmnd_s fcp; +}; + +#pragma pack() + +#endif |