86 lines
3.6 KiB
C
86 lines
3.6 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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* @(#)scivar.h 7.1 (Berkeley) 5/8/90
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* $Id: scivar.h,v 1.2 1994/05/08 05:53:42 chopps Exp $
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*/
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struct sci_softc {
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struct amiga_ctlr *sc_ac;
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struct devqueue sc_dq;
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struct devqueue sc_sq;
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volatile u_char *sci_data; /* r: Current data */
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volatile u_char *sci_odata; /* w: Out data */
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volatile u_char *sci_icmd; /* rw: Initiator command */
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volatile u_char *sci_mode; /* rw: Mode */
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volatile u_char *sci_tcmd; /* rw: Target command */
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volatile u_char *sci_bus_csr; /* r: Bus Status */
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volatile u_char *sci_sel_enb; /* w: Select enable */
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volatile u_char *sci_csr; /* r: Status */
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volatile u_char *sci_dma_send; /* w: Start dma send data */
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volatile u_char *sci_idata; /* r: Input data */
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volatile u_char *sci_trecv; /* w: Start dma receive, target */
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volatile u_char *sci_iack; /* r: Interrupt Acknowledge */
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volatile u_char *sci_irecv; /* w: Start dma receive, initiator */
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int (*dma_xfer_in)(); /* psuedo DMA transfer */
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int (*dma_xfer_out)(); /* psuedo DMA transfer */
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int (*dma_intr)(); /* board-specific interrupt */
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u_char sc_flags;
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u_char sc_lun;
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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 period, offset;
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} sc_sync[8];
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u_char sc_slave;
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u_char sc_scsi_addr;
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u_char sc_stat[2];
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u_char sc_msg[8];
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};
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/* sc_flags */
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#define SCI_IO 0x80 /* DMA I/O in progress */
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#define SCI_ALIVE 0x01 /* controller initialized */
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#define SCI_SELECTED 0x04 /* bus is in selected state. Needed for
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correct abort procedure. */
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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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