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