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- /* @(#)scgcmd.h 2.15 99/10/18 Copyright 1986 J. Schilling */
- /*
- * Definitions for the SCSI general driver 'scg'
- *
- * Copyright (c) 1986 J. Schilling
- */
- /*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #ifndef _SCG_SCGCMD_H
- #define _SCG_SCGCMD_H
- #include <utypes.h>
- #include <btorder.h>
- #if defined(_BIT_FIELDS_LTOH) /* Intel byteorder */
- #elif defined(_BIT_FIELDS_HTOL) /* Motorola byteorder */
- #else
- /*
- * #error will not work for all compilers (e.g. sunos4)
- * The following line will abort compilation on all compilers
- * if none of the above is defines. And that's what we want.
- */
- error One of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL must be defined
- #endif
- #include <scg/scsisense.h>
- #include <scg/scsicdb.h>
- #include <intcvt.h>
- /*
- * Messages that SCSI can send.
- */
- #define SC_COMMAND_COMPLETE 0x00
- #define SC_SYNCHRONOUS 0x01
- #define SC_SAVE_DATA_PTR 0x02
- #define SC_RESTORE_PTRS 0x03
- #define SC_DISCONNECT 0x04
- #define SC_ABORT 0x06
- #define SC_MSG_REJECT 0x07
- #define SC_NO_OP 0x08
- #define SC_PARITY 0x09
- #define SC_IDENTIFY 0x80
- #define SC_DR_IDENTIFY 0xc0
- #define SC_DEVICE_RESET 0x0c
- #define SC_G0_CDBLEN 6 /* Len of Group 0 commands */
- #define SC_G1_CDBLEN 10 /* Len of Group 1 commands */
- #define SC_G5_CDBLEN 12 /* Len of Group 5 commands */
- #define SCG_MAX_CMD 24 /* 24 bytes max. size is supported */
- #define SCG_MAX_STATUS 3 /* XXX (sollte 4 allign.) Mamimum Status Len */
- #define SCG_MAX_SENSE 32 /* Mamimum Sense Len for auto Req. Sense */
- #define DEF_SENSE_LEN 16 /* Default Sense Len */
- #define CCS_SENSE_LEN 18 /* Sense Len for CCS compatible devices */
- struct scg_cmd {
- caddr_t addr; /* Address of data in user space */
- int size; /* DMA count for data transfer */
- int flags; /* see below for definition */
- int cdb_len; /* Size of SCSI command in bytes */
- /* NOTE: rel 4 uses this field only */
- /* with commands not in group 1 or 2*/
- int sense_len; /* for intr() if -1 don't get sense */
- int timeout; /* timeout in seconds */
- /* NOTE: actual resolution depends */
- /* on driver implementation */
- int kdebug; /* driver kernel debug level */
- int resid; /* Bytes not transfered */
- int error; /* Error code from scgintr() */
- int ux_errno; /* UNIX error code */
- #ifdef comment
- XXX struct scsi_status scb; ??? /* Status returnd by command */
- #endif
- union {
- struct scsi_status Scb;/* Status returnd by command */
- u_char cmd_scb[SCG_MAX_STATUS];
- } u_scb;
- #define scb u_scb.Scb
- #ifdef comment
- XXX struct scsi_sense sense; ??? /* Sense bytes from command */
- #endif
- union {
- struct scsi_sense Sense;/* Sense bytes from command */
- u_char cmd_sense[SCG_MAX_SENSE];
- } u_sense;
- #define sense u_sense.Sense
- int sense_count; /* Number of bytes valid in sense */
- int target; /* SCSI target id */
- union { /* SCSI command descriptor block */
- struct scsi_g0cdb g0_cdb;
- struct scsi_g1cdb g1_cdb;
- struct scsi_g5cdb g5_cdb;
- u_char cmd_cdb[SCG_MAX_CMD];
- } cdb; /* 24 bytes max. size is supported */
- };
- #define dma_read flags /* 1 if DMA to Sun, 0 otherwise */
- /*
- * definition for flags field in scg_cmd struct
- */
- #define SCG_RECV_DATA 0x0001 /* DMA direction to Sun */
- #define SCG_DISRE_ENA 0x0002 /* enable disconnect/reconnect */
- #define SCG_SILENT 0x0004 /* be silent on errors */
- #define SCG_CMD_RETRY 0x0008 /* enable retries */
- #define SCG_NOPARITY 0x0010 /* disable parity for this command */
- /*
- * definition for error field in scg_cmd struct
- *
- * The codes refer to SCSI general errors, not to device
- * specific errors. Device specific errors are discovered
- * by checking the sense data.
- * The distinction between retryable and fatal is somewhat ad hoc.
- */
- #define SCG_NO_ERROR 0 /* cdb transported without error */
- #define SCG_RETRYABLE 1 /* any other case */
- #define SCG_FATAL 2 /* could not select target */
- #define SCG_TIMEOUT 3 /* driver timed out */
- #endif /* _SCG_SCGCMD_H */
