sbicvar.h revision 1.1
1 /* $NetBSD: sbicvar.h,v 1.1 2001/10/05 22:27:59 reinoud 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 41 #ifndef _SBICVAR_H_ 42 #define _SBICVAR_H_ 43 #include <sys/malloc.h> 44 #include <sys/callout.h> 45 46 /* 47 * ACB. Holds additional information for each SCSI command Comments: We 48 * need a separate scsi command block because we may need to overwrite it 49 * with a request sense command. Basicly, we refrain from fiddling with 50 * the scsi_xfer struct (except do the expected updating of return values). 51 * We'll generally update: xs->{flags,resid,error,sense,status} and 52 * occasionally xs->retries. 53 */ 54 struct sbic_acb { 55 TAILQ_ENTRY(sbic_acb) chain; 56 struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */ 57 int flags; /* Status */ 58 #define ACB_FREE 0x00 59 #define ACB_ACTIVE 0x01 60 #define ACB_DONE 0x02 61 #define ACB_DATAIN 0x04 /* DMA direction flag */ 62 #define ACB_DMA 0x08 /* ACB using DMA this time */ 63 struct scsi_generic cmd; /* SCSI command block */ 64 int clen; 65 bus_dmamap_t dmamap_xfer; /* Handle for dma */ 66 u_char *data; /* Data buffer... */ 67 int datalen; /* ... and its length. */ 68 int offset; 69 u_long sc_tcnt; /* number of bytes for this DMA */ 70 }; 71 72 /* 73 * Some info about each (possible) target on the SCSI bus. This should 74 * probably have been a "per target+lunit" structure, but we'll leave it at 75 * this for now. Is there a way to reliably hook it up to sc->fordriver?? 76 */ 77 struct sbic_tinfo { 78 int cmds; /* #commands processed */ 79 int dconns; /* #disconnects */ 80 int touts; /* #timeouts */ 81 int perrs; /* #parity errors */ 82 u_char* bounce; /* Bounce buffer for this device */ 83 ushort lubusy; /* What local units/subr. are busy? */ 84 u_char flags; 85 u_char period; /* Period suggestion */ 86 u_char offset; /* Offset suggestion */ 87 } tinfo_t; 88 89 struct sbic_softc { 90 struct device sc_dev; 91 /* struct isr sc_isr;*/ 92 struct callout sc_timo_ch; 93 struct target_sync { 94 u_char state; 95 u_char period; 96 u_char offset; 97 } sc_sync[8]; 98 u_char target; /* Currently active target */ 99 u_char lun; 100 struct scsipi_channel sc_channel; 101 struct scsipi_adapter sc_adapter; 102 sbic_regmap sc_sbicp; /* Handle for the SBIC */ 103 104 volatile void *sc_cregs; /* driver specific regs */ 105 106 /* Lists of command blocks */ 107 TAILQ_HEAD(acb_list, sbic_acb) free_list, 108 ready_list, 109 nexus_list; 110 111 struct sbic_acb *sc_nexus; /* current command */ 112 struct sbic_acb sc_acb[8]; /* the real command blocks */ 113 struct sbic_tinfo sc_tinfo[8]; 114 115 u_char sc_flags; 116 u_char sc_scsiaddr; 117 u_char sc_stat[2]; 118 u_char sc_msg[7]; 119 u_long sc_clkfreq; 120 121 int sc_dmaflags; /* Target-specific busdma flags */ 122 void *sc_dmah; /* Interface specific dma handle */ 123 bus_dma_tag_t sc_dmat; /* Tag for dma accesses */ 124 int sc_max_dmalen; /* Maximum DMA segment length */ 125 int sc_dmamode; /* Machine-specific DMA mode for 126 the SBIC chip */ 127 128 u_short sc_dmatimo; /* dma timeout */ 129 int (*sc_dmaok) (void *, bus_dma_tag_t, struct sbic_acb *); 130 int (*sc_dmasetup) (void *, bus_dma_tag_t, struct sbic_acb *, int); 131 int (*sc_dmanext) (void *, bus_dma_tag_t, struct sbic_acb *, int); 132 void (*sc_dmastop) (void *, bus_dma_tag_t, struct sbic_acb *); 133 void (*sc_dmafinish) (void *, bus_dma_tag_t, struct sbic_acb *); 134 void (*sc_enintr) (struct sbic_softc *); 135 }; 136 137 /* sc_flags */ 138 #define SBICF_ALIVE 0x01 /* controller initialized */ 139 #define SBICF_SELECTED 0x02 /* bus is in selected state. */ 140 #define SBICF_ICMD 0x04 /* Immediate command in execution */ 141 #define SBICF_BADDMA 0x08 /* controller can only DMA to ztwobus space */ 142 #define SBICF_NODMA 0x10 /* Don't use DMA */ 143 #define SBICF_INTR 0x20 /* SBICF interrupt expected */ 144 #define SBICF_INDMA 0x40 /* not used yet, DMA I/O in progress */ 145 146 /* sync states */ 147 #define SYNC_START 0 /* no sync handshake started */ 148 #define SYNC_SENT 1 /* we sent sync request, no answer yet */ 149 #define SYNC_DONE 2 /* target accepted our (or inferior) settings, 150 or it rejected the request and we stay 151 async */ 152 #ifdef DEBUG 153 #define DDB_FOLLOW 0x04 154 #define DDB_IO 0x08 155 #endif 156 extern u_char sbic_inhibit_sync[8]; 157 extern int sbic_no_dma; 158 extern int sbic_clock_override; 159 160 #define PHASE_MASK 0x07 /* mask for psns/pctl phase */ 161 #define DATA_OUT_PHASE 0x00 162 #define DATA_IN_PHASE 0x01 163 #define CMD_PHASE 0x02 164 #define STATUS_PHASE 0x03 165 #define BUS_FREE_PHASE 0x04 166 #define ARB_SEL_PHASE 0x05 /* Fuji chip combines arbitration with sel. */ 167 #define MESG_OUT_PHASE 0x06 168 #define MESG_IN_PHASE 0x07 169 170 #define MSG_CMD_COMPLETE 0x00 171 #define MSG_EXT_MESSAGE 0x01 172 #define MSG_SAVE_DATA_PTR 0x02 173 #define MSG_RESTORE_PTR 0x03 174 #define MSG_DISCONNECT 0x04 175 #define MSG_INIT_DETECT_ERROR 0x05 176 #define MSG_ABORT 0x06 177 #define MSG_REJECT 0x07 178 #define MSG_NOOP 0x08 179 #define MSG_PARITY_ERROR 0x09 180 #define MSG_BUS_DEVICE_RESET 0x0C 181 #define MSG_IDENTIFY 0x80 182 #define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */ 183 #define MSG_SYNC_REQ 0x01 184 185 #define MSG_ISIDENTIFY(x) (x&MSG_IDENTIFY) 186 #define IFY_TRN 0x20 187 #define IFY_LUNTRN(x) (x&0x07) 188 #define IFY_LUN(x) (!(x&0x20)) 189 190 /* Check if high bit set */ 191 192 #define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */ 193 #define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */ 194 #define STS_BUSY 0x08 195 #define STS_INTERMED 0x10 /* Intermediate status sent */ 196 #define STS_EXT 0x80 /* Extended status valid */ 197 198 199 /* States returned by our state machine */ 200 201 #define SBIC_STATE_ERROR -1 202 #define SBIC_STATE_DONE 0 203 #define SBIC_STATE_RUNNING 1 204 #define SBIC_STATE_DISCONNECT 2 205 206 /* 207 * XXXX 208 */ 209 struct scsi_fmt_cdb { 210 int len; /* cdb length (in bytes) */ 211 u_char cdb[28]; /* cdb to use on next read/write */ 212 }; 213 214 struct buf; 215 struct scsipi_xfer; 216 217 void sbic_minphys (struct buf *bp); 218 void sbic_scsi_request (struct scsipi_channel *, 219 scsipi_adapter_req_t, void *); 220 int sbicinit (struct sbic_softc *dev); 221 int sbicintr (struct sbic_softc *); 222 void sbic_dump (struct sbic_softc *dev); 223 224 #endif /* _SBICVAR_H_ */ 225
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