sbicvar.h revision 1.1
1/* 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Van Jacobson of Lawrence Berkeley Laboratory. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)scsivar.h 7.1 (Berkeley) 5/8/90 37 * $Id: sbicvar.h,v 1.1 1994/05/08 05:53:39 chopps Exp $ 38 */ 39#ifndef _SBICVAR_H_ 40#define _SBICVAR_H_ 41 42/* 43 * The largest single request will be MAXPHYS bytes which will require 44 * at most MAXPHYS/NBPG+1 chain elements to describe, i.e. if none of 45 * the buffer pages are physically contiguous (MAXPHYS/NBPG) and the 46 * buffer is not page aligned (+1). 47 */ 48#define DMAMAXIO (MAXPHYS/NBPG+1) 49 50struct dma_chain { 51 int dc_count; 52 char *dc_addr; 53}; 54 55struct sbic_pending { 56 TAILQ_ENTRY(sbic_pending) link; 57 struct scsi_xfer *xs; 58}; 59 60struct sbic_softc { 61 struct device sc_dev; 62 struct target_sync { 63 u_char state; 64 u_char period; 65 u_char offset; 66 } sc_sync[8]; 67 struct scsi_link sc_link; /* proto for sub devices */ 68 sbic_regmap_p sc_sbicp; /* the SBIC */ 69 volatile void *sc_cregs; /* driver specific regs */ 70 TAILQ_HEAD(,sbic_pending) sc_xslist; /* LIFO */ 71 struct sbic_pending sc_xsstore[8][8]; /* one for every unit */ 72 struct scsi_xfer *sc_xs; /* transfer from high level code */ 73 u_char sc_flags; 74 u_char sc_scsiaddr; 75 u_char sc_stat[2]; 76 u_char sc_msg[7]; 77 u_long sc_clkfreq; 78 u_long sc_tcnt; /* number of bytes transfered */ 79 u_char *sc_dmabuffer; 80 u_char *sc_dmausrbuf; 81 u_long sc_dmausrlen; 82 u_short sc_dmacmd; /* used by dma drivers */ 83 u_short sc_dmatimo; /* dma timeout */ 84 u_long sc_dmamask; /* dma valid mem mask */ 85 struct dma_chain sc_chain[DMAMAXIO]; 86 struct dma_chain *sc_cur; 87 struct dma_chain *sc_last; 88 int (*sc_dmago) __P((struct sbic_softc *, char *, int, int)); 89 int (*sc_dmanext) __P((struct sbic_softc *)); 90 void (*sc_dmafree) __P((struct sbic_softc *)); 91 void (*sc_dmastop) __P((struct sbic_softc *)); 92 u_short gtsc_bankmask; /* GVP specific bank selected */ 93}; 94 95/* sc_flags */ 96#define SBICF_ALIVE 0x01 /* controller initialized */ 97#define SBICF_SELECTED 0x04 /* bus is in selected state. */ 98#define SBICF_BADDMA 0x10 /* controller can only DMA to ztwobus space */ 99#define SBICF_BBUF 0x20 /* DMA input needs to be copied from bounce */ 100#define SBICF_INTR 0x40 /* SBICF interrupt expected */ 101#define SBICF_INDMA 0x80 /* not used yet, DMA I/O in progress */ 102 103/* sync states */ 104#define SYNC_START 0 /* no sync handshake started */ 105#define SYNC_SENT 1 /* we sent sync request, no answer yet */ 106#define SYNC_DONE 2 /* target accepted our (or inferior) settings, 107 or it rejected the request and we stay async */ 108#ifdef DEBUG 109#define DDB_FOLLOW 0x04 110#define DDB_IO 0x08 111#endif 112extern int sbic_inhibit_sync; 113extern int sbic_no_dma; 114extern int sbic_clock_override; 115 116#define PHASE 0x07 /* mask for psns/pctl phase */ 117#define DATA_OUT_PHASE 0x00 118#define DATA_IN_PHASE 0x01 119#define CMD_PHASE 0x02 120#define STATUS_PHASE 0x03 121#define BUS_FREE_PHASE 0x04 122#define ARB_SEL_PHASE 0x05 /* Fuji chip combines arbitration with sel. */ 123#define MESG_OUT_PHASE 0x06 124#define MESG_IN_PHASE 0x07 125 126#define MSG_CMD_COMPLETE 0x00 127#define MSG_EXT_MESSAGE 0x01 128#define MSG_SAVE_DATA_PTR 0x02 129#define MSG_RESTORE_PTR 0x03 130#define MSG_DISCONNECT 0x04 131#define MSG_INIT_DETECT_ERROR 0x05 132#define MSG_ABORT 0x06 133#define MSG_REJECT 0x07 134#define MSG_NOOP 0x08 135#define MSG_PARITY_ERROR 0x09 136#define MSG_BUS_DEVICE_RESET 0x0C 137#define MSG_IDENTIFY 0x80 138#define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */ 139#define MSG_SYNC_REQ 0x01 140 141 142#define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */ 143#define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */ 144#define STS_BUSY 0x08 145#define STS_INTERMED 0x10 /* Intermediate status sent */ 146#define STS_EXT 0x80 /* Extended status valid */ 147 148/* 149 * XXXX 150 */ 151struct scsi_fmt_cdb { 152 int len; /* cdb length (in bytes) */ 153 u_char cdb[28]; /* cdb to use on next read/write */ 154}; 155 156struct buf; 157struct scsi_xfer; 158 159void sbic_minphys __P((struct buf *bp)); 160u_int sbic_adinfo __P((void)); 161int sbic_scsicmd __P((struct scsi_xfer *)); 162 163#endif /* _SBICVAR_H_ */ 164