mirror of
https://github.com/LIV2/a4091-software.git
synced 2025-12-06 06:22:44 +00:00
110fc9b97a
a4091d: Added ^C abort to display a4091d: Added decode of xs_control, xs_status, chan_flags, chan_tflags a4091d: Added interrupt structude decode, change_periphtab list a4091d: Added "a4091d -p" to decode periph struct at specified address a4091d: Added default open of a4091.device target without generating I/O a4091.device will not terminate with I/O still pending Added support for TD_REMOVE, TD_ADDCHANGEINT, and TD_REMCHANGEINT Improved OpenDevice() and I/O error codes to give better reason for failure Replaced polled SCSI I/O timeout with more accurate and efficient processing Added panic() requester for rare panic cases Added option to disable SCSI target disconnect Improved SCSI timeout handling to quiesce channel before reset hammer Fixed (prev introduced) bug where SCSI timeout could lead to I/O hang Adjusted SCSI EJECT / LOAD timeouts to be successful with more drive types Improved accuracy of TD_CHANGESTATE immediately following TD_EJECT
253 lines
7.7 KiB
C
253 lines
7.7 KiB
C
/* $NetBSD: siopvar.h,v 1.29 2022/04/07 19:33:37 andvar Exp $ */
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/*
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Van Jacobson of Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)siopvar.h 7.1 (Berkeley) 5/8/90
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*/
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#ifndef _SIOPVAR_H_
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#define _SIOPVAR_H_
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/*
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* The largest single request will be MAXPHYS bytes which will require
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* at most MAXPHYS/PAGE_SIZE+1 chain elements to describe, i.e. if none of
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* the buffer pages are physically contiguous (MAXPHYS/PAGE_SIZE) and the
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* buffer is not page aligned (+1).
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*/
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#define DMAMAXIO (MAXPHYS/PAGE_SIZE+1)
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/*
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* XXX: This should be much smaller for AmigaOS. It's currently 128, which
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* would be 127MB + 1 for unaligned data. Probably doesn't need to be
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* that large. Max segment size (AMIGA_MAX_TRANSFER) can be bumped from
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* 1MB to ?32MB? in which case we would need very few segments here.
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*/
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/*
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* Data Structure for SCRIPTS program
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*/
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struct siop_ds {
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long scsi_addr; /* SCSI ID & sync */
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long idlen; /* Identify message */
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char *idbuf;
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long cmdlen; /* SCSI command */
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char *cmdbuf;
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long stslen; /* Status */
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char *stsbuf;
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long msglen; /* Message */
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char *msgbuf;
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long msginlen; /* Message in */
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char *msginbuf;
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long extmsglen; /* Extended message in */
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char *extmsgbuf;
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long synmsglen; /* Sync transfer request */
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char *synmsgbuf;
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struct {
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long datalen;
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char *databuf;
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} chain[DMAMAXIO];
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};
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/*
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* ACB. Holds additional information for each SCSI command Comments: We
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* need a separate scsi command block because we may need to overwrite it
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* with a request sense command. Basically, we refrain from fiddling with
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* the scsi_xfer struct (except do the expected updating of return values).
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* We'll generally update: xs->{flags,resid,error,sense,status} and
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* occasionally xs->retries.
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*/
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struct siop_acb {
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TAILQ_ENTRY(siop_acb) chain;
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struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */
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int flags; /* Status */
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#define ACB_FREE 0x00
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#define ACB_ACTIVE 0x01
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#define ACB_DONE 0x04
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struct scsipi_generic cmd; /* SCSI command block */
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struct siop_ds ds;
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void *iob_buf;
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u_long iob_curbuf;
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u_long iob_len, iob_curlen;
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u_char msgout[6];
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u_char msg[6];
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u_char stat[1];
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u_char status;
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u_char dummy[2];
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int clen;
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char *daddr; /* Saved data pointer */
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int dleft; /* Residue */
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};
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/*
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* Some info about each (possible) target on the SCSI bus. This should
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* probably have been a "per target+lunit" structure, but we'll leave it at
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* this for now. Is there a way to reliably hook it up to sc->fordriver??
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*/
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struct siop_tinfo {
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int cmds; /* #commands processed */
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int dconns; /* #disconnects */
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int touts; /* #timeouts */
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int perrs; /* #parity errors */
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ushort lubusy; /* What local units/subr. are busy? */
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u_char flags;
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u_char period; /* Period suggestion */
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u_char offset; /* Offset suggestion */
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};
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struct siop_softc {
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device_t sc_dev;
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#ifndef PORT_AMIGA
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struct isr sc_isr;
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void *sc_siop_si;
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#endif
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u_char sc_istat;
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u_char sc_dstat;
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#ifndef ARCH_720
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u_char sc_sstat0;
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#endif
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u_char sc_sstat1;
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#ifdef ARCH_720
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u_short sc_sist;
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#endif
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u_long sc_intcode;
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struct scsipi_adapter sc_adapter;
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struct scsipi_channel sc_channel;
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u_long sc_scriptspa; /* physical address of scripts */
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siop_regmap_p sc_siopp; /* the SIOP */
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u_long sc_active; /* number of active I/O's */
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/* Lists of command blocks */
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TAILQ_HEAD(acb_list, siop_acb) free_list,
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ready_list,
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nexus_list;
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struct siop_acb *sc_nexus; /* current command */
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#define SIOP_NACB 16
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struct siop_acb *sc_acb; /* the real command blocks */
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#ifndef ARCH_720
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struct siop_tinfo sc_tinfo[8];
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#else
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struct siop_tinfo sc_tinfo[16];
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#endif
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u_short sc_clock_freq;
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u_char sc_dcntl;
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u_char sc_ctest7;
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u_short sc_tcp[4];
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u_char sc_flags;
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u_char sc_dien;
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u_char sc_minsync;
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#ifndef ARCH_720
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u_char sc_sien;
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#else
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u_short sc_sien;
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#endif
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#ifdef PORT_AMIGA
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u_char sc_nosync; /* no synchronous SCSI (bit / target) */
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u_char sc_nodisconnect; /* no disconnect SCSI (bit / target) */
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#endif
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/* one for each target */
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struct syncpar {
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u_char state;
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u_char sxfer;
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#ifndef ARCH_720
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u_char sbcl;
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} sc_sync[8];
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#else
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u_char scntl3;
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} sc_sync[16];
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#endif
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};
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/* sc_flags */
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#define SIOP_INTSOFF 0x80 /* Interrupts turned off */
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#define SIOP_INTDEFER 0x40 /* Level 6 interrupt has been deferred */
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#define SIOP_ALIVE 0x01 /* controller initialized */
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#define SIOP_SELECTED 0x04 /* bus is in selected state. Needed for
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correct abort procedure. */
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/* negotiation states */
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#define NEG_WIDE 0 /* Negotiate wide transfers */
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#define NEG_WAITW 1 /* Waiting for wide negotiation response */
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#define NEG_SYNC 2 /* Negotiate synch transfers */
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#define NEG_WAITS 3 /* Waiting for synch negoation response */
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#define NEG_DONE 4 /* Wide and/or sync negotiation done */
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#define MSG_CMD_COMPLETE 0x00
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#define MSG_EXT_MESSAGE 0x01
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#define MSG_SAVE_DATA_PTR 0x02
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#define MSG_RESTORE_PTR 0x03
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#define MSG_DISCONNECT 0x04
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#define MSG_INIT_DETECT_ERROR 0x05
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#define MSG_ABORT 0x06
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#define MSG_REJECT 0x07
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#define MSG_NOOP 0x08
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#define MSG_PARITY_ERROR 0x09
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#define MSG_BUS_DEVICE_RESET 0x0C
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#define MSG_IDENTIFY 0x80
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#define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */
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#define MSG_SYNC_REQ 0x01
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#define MSG_WIDE_REQ 0x03
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#define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */
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#define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */
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#define STS_BUSY 0x08
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#define STS_INTERMED 0x10 /* Intermediate status sent */
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#define STS_EXT 0x80 /* Extended status valid */
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#ifdef ARCH_720
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void siopng_minphys(struct buf *bp);
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void siopng_scsipi_request(struct scsipi_channel *,
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scsipi_adapter_req_t, void *);
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void siopnginitialize(struct siop_softc *);
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void siopngintr(struct siop_softc *);
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void siopng_dump_registers(struct siop_softc *);
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#ifdef DEBUG
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void siopng_dump(struct siop_softc *);
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#endif
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#else
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void siop_minphys(struct buf *bp);
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void siop_scsipi_request(struct scsipi_channel *,
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scsipi_adapter_req_t, void *);
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void siopinitialize(struct siop_softc *);
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void siopintr(struct siop_softc *);
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void siop_dump_registers(struct siop_softc *);
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#ifdef DEBUG
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void siop_dump(struct siop_softc *);
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#endif
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#endif
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void siopshutdown(struct scsipi_channel *chan);
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#endif /* _SIOPVAR_H */
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