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SCP: Updated to current.
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Richard Cornwell
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sim_scsi.h
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133
sim_scsi.h
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/* sim_scsi.h: SCSI bus simulation
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Copyright (c) 2019, Matt Burke
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of the author shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from the author.
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*/
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#ifndef _SIM_SCSI_H_
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#define _SIM_SCSI_H_ 0
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#include "sim_defs.h"
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/* SCSI device states */
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#define SCSI_DISC 0 /* disconnected */
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#define SCSI_TARG 1 /* target mode */
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#define SCSI_INIT 2 /* initiator mode */
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/* SCSI device types */
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#define SCSI_DISK 0 /* direct access device */
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#define SCSI_TAPE 1 /* sequential access device */
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#define SCSI_PRINT 2 /* printer */
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#define SCSI_PROC 3 /* processor */
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#define SCSI_WORM 4 /* write-once device */
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#define SCSI_CDROM 5 /* CD-ROM */
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#define SCSI_SCAN 6 /* scanner */
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#define SCSI_OPTI 7 /* optical */
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#define SCSI_JUKE 8 /* jukebox */
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#define SCSI_COMM 9 /* communications device */
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/* SCSI bus phases */
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#define SCSI_DATO 0 /* data out */
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#define SCSI_DATI 1 /* data in */
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#define SCSI_CMD 2 /* command */
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#define SCSI_STS 3 /* status */
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#define SCSI_MSGO 6 /* message out */
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#define SCSI_MSGI 7 /* message in */
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/* Debugging bitmaps */
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#define SCSI_DBG_CMD 0x01000000 /* SCSI commands */
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#define SCSI_DBG_MSG 0x02000000 /* SCSI messages */
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#define SCSI_DBG_BUS 0x04000000 /* bus activity */
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#define SCSI_DBG_DSK 0x08000000 /* disk activity */
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#define SCSI_V_WLK (UNIT_V_UF + 5) /* hwre write lock */
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#define SCSI_V_NOAUTO (UNIT_V_UF + 6) /* noautosize */
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#define SCSI_V_UF (UNIT_V_UF + 7)
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#define SCSI_WLK (1 << SCSI_V_WLK)
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#define SCSI_NOAUTO (1 << SCSI_V_NOAUTO)
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struct scsi_dev_t {
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uint8 devtype; /* device type */
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uint8 pqual; /* peripheral qualifier */
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uint32 scsiver; /* SCSI version */
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t_bool removeable; /* removable flag */
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uint32 block_size; /* device block size */
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uint32 lbn; /* device size (blocks) */
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const char *manufacturer; /* manufacturer string */
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const char *product; /* product string */
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const char *rev; /* revision string */
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const char *name; /* gap length for tapes */
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uint32 gaplen;
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};
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struct scsi_bus_t {
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DEVICE *dptr; /* SCSI device */
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UNIT *dev[8]; /* target units */
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int32 initiator; /* current initiator */
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int32 target; /* current target */
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t_bool atn; /* attention flag */
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t_bool req; /* request flag */
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uint8 *buf; /* transfer buffer */
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uint8 cmd[10]; /* command buffer */
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uint32 buf_b; /* buffer bottom ptr */
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uint32 buf_t; /* buffer top ptr */
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uint32 phase; /* current bus phase */
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uint32 lun; /* selected lun */
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uint32 status;
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uint32 sense_key;
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uint32 sense_code;
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uint32 sense_qual;
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uint32 sense_info;
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};
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typedef struct scsi_bus_t SCSI_BUS;
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typedef struct scsi_dev_t SCSI_DEV;
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t_bool scsi_arbitrate (SCSI_BUS *bus, uint32 initiator);
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void scsi_release (SCSI_BUS *bus);
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void scsi_set_atn (SCSI_BUS *bus);
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void scsi_release_atn (SCSI_BUS *bus);
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t_bool scsi_select (SCSI_BUS *bus, uint32 target);
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uint32 scsi_write (SCSI_BUS *bus, uint8 *data, uint32 len);
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uint32 scsi_read (SCSI_BUS *bus, uint8 *data, uint32 len);
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uint32 scsi_state (SCSI_BUS *bus, uint32 id);
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void scsi_add_unit (SCSI_BUS *bus, uint32 id, UNIT *uptr);
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void scsi_set_unit (SCSI_BUS *bus, UNIT *uptr, SCSI_DEV *dev);
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void scsi_reset_unit (UNIT *uptr);
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void scsi_reset (SCSI_BUS *bus);
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t_stat scsi_init (SCSI_BUS *bus, uint32 maxfr);
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t_stat scsi_set_fmt (UNIT *uptr, int32 val, CONST char *cptr, void *desc);
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t_stat scsi_set_wlk (UNIT *uptr, int32 val, CONST char *cptr, void *desc);
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t_stat scsi_show_fmt (FILE *st, UNIT *uptr, int32 val, CONST void *desc);
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t_stat scsi_show_wlk (FILE *st, UNIT *uptr, int32 val, CONST void *desc);
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t_stat scsi_attach (UNIT *uptr, CONST char *cptr);
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t_stat scsi_detach (UNIT *uptr);
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t_stat scsi_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr);
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#endif
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