1 /* $NetBSD: scivar.h,v 1.19 2022/04/07 20:23:44 andvar 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 device_t 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 /* pseudo DMA transfer */ 63 int (*dma_xfer_in)(struct sci_softc *, int, u_char *, int); 64 /* pseudo 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_ */ 139