15d4cf6bf9
amiga goes: config.new *and* /sys/scsi. clock code coerced into a single .c file adding an accurate usec delay(). disklabel.c updated to DTRT, code to write RDB's to be added soon. sbic (old scsi) converted over to new scsi and config this covers about 90% of users. Other drivers soon.
164 lines
5.7 KiB
C
164 lines
5.7 KiB
C
/*
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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* @(#)scsivar.h 7.1 (Berkeley) 5/8/90
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* $Id: sbicvar.h,v 1.1 1994/05/08 05:53:39 chopps Exp $
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*/
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#ifndef _SBICVAR_H_
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#define _SBICVAR_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/NBPG+1 chain elements to describe, i.e. if none of
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* the buffer pages are physically contiguous (MAXPHYS/NBPG) and the
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* buffer is not page aligned (+1).
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*/
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#define DMAMAXIO (MAXPHYS/NBPG+1)
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struct dma_chain {
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int dc_count;
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char *dc_addr;
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};
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struct sbic_pending {
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TAILQ_ENTRY(sbic_pending) link;
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struct scsi_xfer *xs;
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};
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struct sbic_softc {
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struct device sc_dev;
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struct target_sync {
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u_char state;
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u_char period;
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u_char offset;
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} sc_sync[8];
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struct scsi_link sc_link; /* proto for sub devices */
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sbic_regmap_p sc_sbicp; /* the SBIC */
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volatile void *sc_cregs; /* driver specific regs */
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TAILQ_HEAD(,sbic_pending) sc_xslist; /* LIFO */
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struct sbic_pending sc_xsstore[8][8]; /* one for every unit */
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struct scsi_xfer *sc_xs; /* transfer from high level code */
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u_char sc_flags;
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u_char sc_scsiaddr;
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u_char sc_stat[2];
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u_char sc_msg[7];
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u_long sc_clkfreq;
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u_long sc_tcnt; /* number of bytes transfered */
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u_char *sc_dmabuffer;
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u_char *sc_dmausrbuf;
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u_long sc_dmausrlen;
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u_short sc_dmacmd; /* used by dma drivers */
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u_short sc_dmatimo; /* dma timeout */
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u_long sc_dmamask; /* dma valid mem mask */
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struct dma_chain sc_chain[DMAMAXIO];
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struct dma_chain *sc_cur;
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struct dma_chain *sc_last;
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int (*sc_dmago) __P((struct sbic_softc *, char *, int, int));
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int (*sc_dmanext) __P((struct sbic_softc *));
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void (*sc_dmafree) __P((struct sbic_softc *));
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void (*sc_dmastop) __P((struct sbic_softc *));
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u_short gtsc_bankmask; /* GVP specific bank selected */
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};
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/* sc_flags */
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#define SBICF_ALIVE 0x01 /* controller initialized */
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#define SBICF_SELECTED 0x04 /* bus is in selected state. */
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#define SBICF_BADDMA 0x10 /* controller can only DMA to ztwobus space */
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#define SBICF_BBUF 0x20 /* DMA input needs to be copied from bounce */
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#define SBICF_INTR 0x40 /* SBICF interrupt expected */
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#define SBICF_INDMA 0x80 /* not used yet, DMA I/O in progress */
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/* sync states */
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#define SYNC_START 0 /* no sync handshake started */
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#define SYNC_SENT 1 /* we sent sync request, no answer yet */
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#define SYNC_DONE 2 /* target accepted our (or inferior) settings,
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or it rejected the request and we stay async */
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#ifdef DEBUG
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#define DDB_FOLLOW 0x04
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#define DDB_IO 0x08
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#endif
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extern int sbic_inhibit_sync;
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extern int sbic_no_dma;
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extern int sbic_clock_override;
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#define PHASE 0x07 /* mask for psns/pctl phase */
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#define DATA_OUT_PHASE 0x00
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#define DATA_IN_PHASE 0x01
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#define CMD_PHASE 0x02
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#define STATUS_PHASE 0x03
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#define BUS_FREE_PHASE 0x04
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#define ARB_SEL_PHASE 0x05 /* Fuji chip combines arbitration with sel. */
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#define MESG_OUT_PHASE 0x06
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#define MESG_IN_PHASE 0x07
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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 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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/*
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* XXXX
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*/
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struct scsi_fmt_cdb {
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int len; /* cdb length (in bytes) */
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u_char cdb[28]; /* cdb to use on next read/write */
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};
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struct buf;
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struct scsi_xfer;
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void sbic_minphys __P((struct buf *bp));
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u_int sbic_adinfo __P((void));
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int sbic_scsicmd __P((struct scsi_xfer *));
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#endif /* _SBICVAR_H_ */
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