86 lines
3.6 KiB
C
86 lines
3.6 KiB
C
/*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*
|
|
* @(#)scivar.h 7.1 (Berkeley) 5/8/90
|
|
* $Id: scivar.h,v 1.1 1994/02/28 06:06:25 chopps Exp $
|
|
*/
|
|
|
|
struct sci_softc {
|
|
struct amiga_ctlr *sc_ac;
|
|
struct devqueue sc_dq;
|
|
struct devqueue sc_sq;
|
|
|
|
volatile u_char *sci_data; /* r: Current data */
|
|
volatile u_char *sci_odata; /* w: Out data */
|
|
volatile u_char *sci_icmd; /* rw: Initiator command */
|
|
volatile u_char *sci_mode; /* rw: Mode */
|
|
volatile u_char *sci_tcmd; /* rw: Target command */
|
|
volatile u_char *sci_bus_csr; /* r: Bus Status */
|
|
volatile u_char *sci_sel_enb; /* w: Select enable */
|
|
volatile u_char *sci_csr; /* r: Status */
|
|
volatile u_char *sci_dma_send; /* w: Start dma send data */
|
|
volatile u_char *sci_idata; /* r: Input data */
|
|
volatile u_char *sci_trecv; /* w: Start dma receive, target */
|
|
volatile u_char *sci_iack; /* r: Interrupt Acknowledge */
|
|
volatile u_char *sci_irecv; /* w: Start dma receive, initiator */
|
|
|
|
int (*dma_xfer_in)(); /* psuedo DMA transfer */
|
|
int (*dma_xfer_out)(); /* psuedo DMA transfer */
|
|
int (*dma_intr)(); /* board-specific interrupt */
|
|
u_char sc_flags;
|
|
u_char sc_lun;
|
|
/* one for each target */
|
|
struct syncpar {
|
|
u_char state;
|
|
u_char period, offset;
|
|
} sc_sync[8];
|
|
u_char sc_slave;
|
|
u_char sc_scsi_addr;
|
|
u_char sc_stat[2];
|
|
u_char sc_msg[8];
|
|
};
|
|
|
|
/* sc_flags */
|
|
#define SCI_IO 0x80 /* DMA I/O in progress */
|
|
#define SCI_ALIVE 0x01 /* controller initialized */
|
|
#define SCI_SELECTED 0x04 /* bus is in selected state. Needed for
|
|
correct abort procedure. */
|
|
|
|
/* sync states */
|
|
#define SYNC_START 0 /* no sync handshake started */
|
|
#define SYNC_SENT 1 /* we sent sync request, no answer yet */
|
|
#define SYNC_DONE 2 /* target accepted our (or inferior) settings,
|
|
or it rejected the request and we stay async *
|