sbicvar.h revision 1.4
1 /* $NetBSD: sbicvar.h,v 1.4 1995/01/05 07:22:44 chopps 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)scsivar.h 7.1 (Berkeley) 5/8/90 39 */ 40 #ifndef _SBICVAR_H_ 41 #define _SBICVAR_H_ 42 43 /* 44 * The largest single request will be MAXPHYS bytes which will require 45 * at most MAXPHYS/NBPG+1 chain elements to describe, i.e. if none of 46 * the buffer pages are physically contiguous (MAXPHYS/NBPG) and the 47 * buffer is not page aligned (+1). 48 */ 49 #define DMAMAXIO (MAXPHYS/NBPG+1) 50 51 struct dma_chain { 52 int dc_count; 53 char *dc_addr; 54 }; 55 56 struct sbic_pending { 57 TAILQ_ENTRY(sbic_pending) link; 58 struct scsi_xfer *xs; 59 }; 60 61 struct sbic_softc { 62 struct device sc_dev; 63 struct target_sync { 64 u_char state; 65 u_char period; 66 u_char offset; 67 } sc_sync[8]; 68 struct scsi_link sc_link; /* proto for sub devices */ 69 sbic_regmap_p sc_sbicp; /* the SBIC */ 70 volatile void *sc_cregs; /* driver specific regs */ 71 TAILQ_HEAD(,sbic_pending) sc_xslist; /* LIFO */ 72 struct sbic_pending sc_xsstore[8][8]; /* one for every unit */ 73 struct scsi_xfer *sc_xs; /* transfer from high level code */ 74 u_char sc_flags; 75 u_char sc_scsiaddr; 76 u_char sc_stat[2]; 77 u_char sc_msg[7]; 78 u_long sc_clkfreq; 79 u_long sc_tcnt; /* number of bytes transfered */ 80 u_char *sc_dmabuffer; 81 u_char *sc_dmausrbuf; 82 u_long sc_dmausrlen; 83 u_short sc_dmacmd; /* used by dma drivers */ 84 u_short sc_dmatimo; /* dma timeout */ 85 u_long sc_dmamask; /* dma valid mem mask */ 86 struct dma_chain sc_chain[DMAMAXIO]; 87 struct dma_chain *sc_cur; 88 struct dma_chain *sc_last; 89 int (*sc_dmago) __P((struct sbic_softc *, char *, int, int)); 90 int (*sc_dmanext) __P((struct sbic_softc *)); 91 void (*sc_dmafree) __P((struct sbic_softc *)); 92 void (*sc_dmastop) __P((struct sbic_softc *)); 93 u_short gtsc_bankmask; /* GVP specific bank selected */ 94 }; 95 96 /* sc_flags */ 97 #define SBICF_ALIVE 0x01 /* controller initialized */ 98 #define SBICF_DCFLUSH 0x02 /* need flush for overlap after dma finishes */ 99 #define SBICF_SELECTED 0x04 /* bus is in selected state. */ 100 #define SBICF_BADDMA 0x10 /* controller can only DMA to ztwobus space */ 101 #define SBICF_BBUF 0x20 /* DMA input needs to be copied from bounce */ 102 #define SBICF_INTR 0x40 /* SBICF interrupt expected */ 103 #define SBICF_INDMA 0x80 /* not used yet, DMA I/O in progress */ 104 105 /* sync states */ 106 #define SYNC_START 0 /* no sync handshake started */ 107 #define SYNC_SENT 1 /* we sent sync request, no answer yet */ 108 #define SYNC_DONE 2 /* target accepted our (or inferior) settings, 109 or it rejected the request and we stay async */ 110 #ifdef DEBUG 111 #define DDB_FOLLOW 0x04 112 #define DDB_IO 0x08 113 #endif 114 extern int sbic_inhibit_sync; 115 extern int sbic_no_dma; 116 extern int sbic_clock_override; 117 118 #define PHASE 0x07 /* mask for psns/pctl phase */ 119 #define DATA_OUT_PHASE 0x00 120 #define DATA_IN_PHASE 0x01 121 #define CMD_PHASE 0x02 122 #define STATUS_PHASE 0x03 123 #define BUS_FREE_PHASE 0x04 124 #define ARB_SEL_PHASE 0x05 /* Fuji chip combines arbitration with sel. */ 125 #define MESG_OUT_PHASE 0x06 126 #define MESG_IN_PHASE 0x07 127 128 #define MSG_CMD_COMPLETE 0x00 129 #define MSG_EXT_MESSAGE 0x01 130 #define MSG_SAVE_DATA_PTR 0x02 131 #define MSG_RESTORE_PTR 0x03 132 #define MSG_DISCONNECT 0x04 133 #define MSG_INIT_DETECT_ERROR 0x05 134 #define MSG_ABORT 0x06 135 #define MSG_REJECT 0x07 136 #define MSG_NOOP 0x08 137 #define MSG_PARITY_ERROR 0x09 138 #define MSG_BUS_DEVICE_RESET 0x0C 139 #define MSG_IDENTIFY 0x80 140 #define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */ 141 #define MSG_SYNC_REQ 0x01 142 143 144 #define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */ 145 #define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */ 146 #define STS_BUSY 0x08 147 #define STS_INTERMED 0x10 /* Intermediate status sent */ 148 #define STS_EXT 0x80 /* Extended status valid */ 149 150 /* 151 * XXXX 152 */ 153 struct scsi_fmt_cdb { 154 int len; /* cdb length (in bytes) */ 155 u_char cdb[28]; /* cdb to use on next read/write */ 156 }; 157 158 struct buf; 159 struct scsi_xfer; 160 161 void sbic_minphys __P((struct buf *bp)); 162 int sbic_scsicmd __P((struct scsi_xfer *)); 163 164 #endif /* _SBICVAR_H_ */ 165
Indexes created Sun Oct 12 02:09:55 GMT 2025