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      1 /*	$NetBSD: iris_scsivar.h,v 1.1 2019/01/12 16:44:47 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2018 Naruaki Etomi
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 /*
     29  * Silicon Graphics "IRIS" series MIPS processors machine bootloader.
     30  * WD33C93 SCSI interface parameter description.
     31  */
     32 
     33 #ifndef _SCSIVAR_H_
     34 #define _SCSIVAR_H_
     35 
     36 #define SBIC_MAX_MSGLEN	8
     37 #define SBIC_ABORT_TIMEOUT	2000	/* time to wait for abort */
     38 
     39 /*
     40  * SCSI delays
     41  * In u-seconds, primarily for state changes on the SPC.
     42  */
     43 #define SBIC_CMD_WAIT	50000	/* wait per step of 'immediate' cmds */
     44 #define SBIC_DATA_WAIT	50000	/* wait per data in/out step */
     45 #define SBIC_INIT_WAIT	50000	/* wait per step (both) during init */
     46 
     47 #define NSCSI			1
     48 #define SCSI_LUN		0
     49 #define SCSI_CLKFREQ		20
     50 
     51 struct	wd33c93_softc {
     52 	volatile uint8_t *sc_asr_regh;	/* address register */
     53 	volatile uint8_t *sc_data_regh;	/* data register */
     54 	uint8_t sc_target;		/* Currently active target */
     55 	uint8_t sc_syncperiods;		/* Sync transfer periods (4ns units) */
     56 	u_short	sc_state;
     57 	u_short	sc_status;
     58 	int	sc_flags;
     59 	uint8_t	sc_imsg[SBIC_MAX_MSGLEN];
     60 	uint8_t	sc_omsg[SBIC_MAX_MSGLEN];
     61 	volatile int xs_status;		/* status flags */
     62 };
     63 
     64 struct wd33c93_softc wd33c93_softc[NSCSI];
     65 
     66 extern uint8_t scsi_ctlr, scsi_id, scsi_part;
     67 
     68 /* values for sc_flags */
     69 #define SBICF_SELECTED	0x01	/* bus is in selected state. */
     70 #define SBICF_NODMA	0x02	/* Polled transfer */
     71 #define SBICF_INDMA	0x04	/* DMA I/O in progress */
     72 #define SBICF_SYNCNEGO	0x08	/* Sync negotiation in progress */
     73 #define SBICF_ABORTING	0x10	/* Aborting */
     74 
     75 /* values for sc_state */
     76 #define SBIC_UNINITIALIZED	0	/* Driver not initialized */
     77 #define SBIC_IDLE		1	/* waiting for something to do */
     78 #define SBIC_SELECTING		2	/* SCSI command is arbiting */
     79 #define SBIC_RESELECTED		3	/* Has been reselected */
     80 #define SBIC_IDENTIFIED		4	/* Has gotten IFY but not TAG */
     81 #define SBIC_CONNECTED		5	/* Actively using the SCSI bus */
     82 #define SBIC_DISCONNECT		6	/* MSG_DISCONNECT received */
     83 #define SBIC_CMDCOMPLETE 	7	/* MSG_CMDCOMPLETE received */
     84 #define SBIC_ERROR		8	/* Error has occurred */
     85 #define SBIC_SELTIMEOUT		9	/* Select Timeout */
     86 #define SBIC_CLEANING		10	/* Scrubbing ACB's */
     87 #define SBIC_BUSRESET		11	/* SCSI RST has been issued */
     88 
     89 /* values for sc_msgout */
     90 #define SEND_DEV_RESET		0x0001
     91 #define SEND_PARITY_ERROR	0x0002
     92 #define SEND_INIT_DET_ERR	0x0004
     93 #define SEND_REJECT		0x0008
     94 #define SEND_IDENTIFY		0x0010
     95 #define SEND_ABORT		0x0020
     96 #define SEND_WDTR		0x0040
     97 #define SEND_SDTR		0x0080
     98 #define SEND_TAG		0x0100
     99 
    100 #define STS_CHECKCOND		0x02	/* Check Condition (ie., read sense) */
    101 
    102 /*
    103  * States returned by our state machine
    104  */
    105 #define SBIC_STATE_ERROR	-1
    106 #define SBIC_STATE_DONE		0
    107 #define SBIC_STATE_RUNNING	1
    108 #define SBIC_STATE_DISCONNECT	2
    109 
    110 #define DEBUG_ACBS	0x01
    111 #define DEBUG_INTS	0x02
    112 #define DEBUG_CMDS	0x04
    113 #define DEBUG_MISC	0x08
    114 #define DEBUG_TRAC	0x10
    115 #define DEBUG_RSEL	0x20
    116 #define DEBUG_PHASE	0x40
    117 #define DEBUG_DMA	0x80
    118 #define DEBUG_CCMDS	0x100
    119 #define DEBUG_MSGS	0x200
    120 #define DEBUG_TAGS	0x400
    121 #define DEBUG_SYNC	0x800
    122 
    123 #endif /* _SCSIVAR_H_ */
    124