sys/arch/amiga/dev/scivar.h

   1 /*      $NetBSD: scivar.h,v 1.15.2.3 2004/09/21 13:12:31 skrll Exp $    */
   2
   3 /*
   4  * Copyright (c) 1990 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Van Jacobson of Lawrence Berkeley Laboratory.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)scivar.h    7.1 (Berkeley) 5/8/90
  35  */
  36 #ifndef _SCIVAR_H_
  37 #define _SCIVAR_H_
  38
  39 struct sci_softc;
  40
  41 struct  sci_softc {
  42         struct  device sc_dev;
  43         struct  isr sc_isr;
  44         struct  scsipi_adapter sc_adapter;
  45         struct  scsipi_channel sc_channel;
  46         struct  scsipi_xfer *sc_xs;     /* transfer from high level code */
  47
  48         volatile u_char *sci_data;      /* r: Current data */
  49         volatile u_char *sci_odata;     /* w: Out data */
  50         volatile u_char *sci_icmd;      /* rw: Initiator command */
  51         volatile u_char *sci_mode;      /* rw: Mode */
  52         volatile u_char *sci_tcmd;      /* rw: Target command */
  53         volatile u_char *sci_bus_csr;   /* r: Bus Status */
  54         volatile u_char *sci_sel_enb;   /* w: Select enable */
  55         volatile u_char *sci_csr;       /* r: Status */
  56         volatile u_char *sci_dma_send;  /* w: Start DMA send data */
  57         volatile u_char *sci_idata;     /* r: Input data */
  58         volatile u_char *sci_trecv;     /* w: Start DMA receive, target */
  59         volatile u_char *sci_iack;      /* r: Interrupt Acknowledge */
  60         volatile u_char *sci_irecv;     /* w: Start DMA receive, initiator */
  61
  62         /* psuedo DMA transfer */
  63         int     (*dma_xfer_in)(struct sci_softc *, int, u_char *, int);
  64         /* psuedo DMA transfer */
  65         int     (*dma_xfer_out)(struct sci_softc *, int, u_char *, int);
  66         u_char  sc_flags;
  67         u_char  sc_lun;
  68         /* one for each target */
  69         struct syncpar {
  70           u_char state;
  71           u_char period, offset;
  72         } sc_sync[8];
  73         u_char  sc_slave;
  74         u_char  sc_scsi_addr;
  75         u_char  sc_stat[2];
  76         u_char  sc_msg[8];
  77 };
  78
  79 /* sc_flags */
  80 #define SCI_IO          0x80    /* DMA I/O in progress */
  81 #define SCI_ALIVE       0x01    /* controller initialized */
  82 #define SCI_SELECTED    0x04    /* bus is in selected state. Needed for
  83                                    correct abort procedure. */
  84
  85 /* sync states */
  86 #define SYNC_START      0       /* no sync handshake started */
  87 #define SYNC_SENT       1       /* we sent sync request, no answer yet */
  88 #define SYNC_DONE       2       /* target accepted our (or inferior) settings,
  89                                    or it rejected the request and we stay async */
  90
  91 #define PHASE           0x07            /* mask for psns/pctl phase */
  92 #define DATA_OUT_PHASE  0x00
  93 #define DATA_IN_PHASE   0x01
  94 #define CMD_PHASE       0x02
  95 #define STATUS_PHASE    0x03
  96 #define BUS_FREE_PHASE  0x04
  97 #define ARB_SEL_PHASE   0x05    /* Fuji chip combines arbitration with sel. */
  98 #define MESG_OUT_PHASE  0x06
  99 #define MESG_IN_PHASE   0x07
 100
 101 #define MSG_CMD_COMPLETE        0x00
 102 #define MSG_EXT_MESSAGE         0x01
 103 #define MSG_SAVE_DATA_PTR       0x02
 104 #define MSG_RESTORE_PTR         0x03
 105 #define MSG_DISCONNECT          0x04
 106 #define MSG_INIT_DETECT_ERROR   0x05
 107 #define MSG_ABORT               0x06
 108 #define MSG_REJECT              0x07
 109 #define MSG_NOOP                0x08
 110 #define MSG_PARITY_ERROR        0x09
 111 #define MSG_BUS_DEVICE_RESET    0x0C
 112 #define MSG_IDENTIFY            0x80
 113 #define MSG_IDENTIFY_DR         0xc0    /* (disconnect/reconnect allowed) */
 114 #define MSG_SYNC_REQ            0x01
 115
 116
 117 #define STS_CHECKCOND   0x02    /* Check Condition (ie., read sense) */
 118 #define STS_CONDMET     0x04    /* Condition Met (ie., search worked) */
 119 #define STS_BUSY        0x08
 120 #define STS_INTERMED    0x10    /* Intermediate status sent */
 121 #define STS_EXT         0x80    /* Extended status valid */
 122
 123 /*
 124  * XXXX
 125  */
 126 struct scsi_fmt_cdb {
 127         int len;                /* cdb length (in bytes) */
 128         u_char cdb[28];         /* cdb to use on next read/write */
 129 };
 130
 131 struct buf;
 132 struct scsipi_xfer;
 133
 134 void sci_minphys(struct buf *);
 135 void sci_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t, void *);
 136 void scireset(struct sci_softc *);
 137
 138 #endif /* _SCIVAR_H_ */