sbicvar.h revision 1.15
1 /* $NetBSD: sbicvar.h,v 1.15 2000/03/23 06:33:13 thorpej 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 #include <sys/malloc.h> 43 #include <sys/callout.h> 44 45 /* 46 * The largest single request will be MAXPHYS bytes which will require 47 * at most MAXPHYS/NBPG+1 chain elements to describe, i.e. if none of 48 * the buffer pages are physically contiguous (MAXPHYS/NBPG) and the 49 * buffer is not page aligned (+1). 50 */ 51 #define DMAMAXIO (MAXPHYS/NBPG+1) 52 53 struct dma_chain { 54 int dc_count; 55 char *dc_addr; 56 }; 57 58 /* 59 * ACB. Holds additional information for each SCSI command Comments: We 60 * need a separate scsi command block because we may need to overwrite it 61 * with a request sense command. Basicly, we refrain from fiddling with 62 * the scsipi_xfer struct (except do the expected updating of return values). 63 * We'll generally update: xs->{flags,resid,error,sense,status} and 64 * occasionally xs->retries. 65 */ 66 struct sbic_acb { 67 TAILQ_ENTRY(sbic_acb) chain; 68 struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */ 69 int flags; /* Status */ 70 #define ACB_FREE 0x00 71 #define ACB_ACTIVE 0x01 72 #define ACB_DONE 0x04 73 #define ACB_CHKSENSE 0x08 74 #define ACB_BBUF 0x10 /* DMA input needs to be copied from bounce */ 75 #define ACB_DATAIN 0x20 /* DMA direction flag */ 76 struct scsi_generic cmd; /* SCSI command block */ 77 int clen; 78 struct dma_chain sc_kv; /* Virtual address of whole DMA */ 79 struct dma_chain sc_pa; /* Physical address of DMA segment */ 80 u_long sc_tcnt; /* number of bytes for this DMA */ 81 u_char *sc_dmausrbuf; /* user buffer kva - for bounce copy */ 82 u_long sc_dmausrlen; /* length of bounce copy */ 83 u_short sc_dmacmd; /* Internal data for this DMA */ 84 char *pa_addr; /* XXXX initial phys addr */ 85 u_char *sc_usrbufpa; /* user buffer phys addr */ 86 }; 87 88 /* 89 * Some info about each (possible) target on the SCSI bus. This should 90 * probably have been a "per target+lunit" structure, but we'll leave it at 91 * this for now. Is there a way to reliably hook it up to sc->fordriver?? 92 */ 93 struct sbic_tinfo { 94 int cmds; /* #commands processed */ 95 int dconns; /* #disconnects */ 96 int touts; /* #timeouts */ 97 int perrs; /* #parity errors */ 98 int senses; /* #request sense commands sent */ 99 u_char* bounce; /* Bounce buffer for this device */ 100 ushort lubusy; /* What local units/subr. are busy? */ 101 u_char flags; 102 u_char period; /* Period suggestion */ 103 u_char offset; /* Offset suggestion */ 104 } tinfo_t; 105 106 struct sbic_softc { 107 struct device sc_dev; 108 struct isr sc_isr; 109 struct callout sc_timo_ch; 110 struct target_sync { 111 u_char state; 112 u_char period; 113 u_char offset; 114 } sc_sync[8]; 115 u_char target; /* Currently active target */ 116 u_char lun; 117 struct scsipi_link sc_link; /* proto for sub devices */ 118 struct scsipi_adapter sc_adapter; 119 sbic_regmap_t sc_sbic; /* the two SBIC pointers */ 120 volatile void *sc_cregs; /* driver specific regs */ 121 122 /* Lists of command blocks */ 123 TAILQ_HEAD(acb_list, sbic_acb) free_list, 124 ready_list, 125 nexus_list; 126 127 struct sbic_acb *sc_nexus; /* current command */ 128 struct sbic_acb sc_acb[8]; /* the real command blocks */ 129 struct sbic_tinfo sc_tinfo[8]; 130 131 struct scsipi_xfer *sc_xs; /* transfer from high level code */ 132 u_char sc_flags; 133 u_char sc_scsiaddr; 134 u_char sc_stat[2]; 135 u_char sc_msg[7]; 136 u_long sc_clkfreq; 137 u_long sc_tcnt; /* number of bytes transfered */ 138 u_short sc_dmacmd; /* used by dma drivers */ 139 u_short sc_dmatimo; /* dma timeout */ 140 u_long sc_dmamask; /* dma valid mem mask */ 141 struct dma_chain *sc_cur; 142 struct dma_chain *sc_last; 143 int (*sc_dmago) __P((struct sbic_softc *, char *, int, int)); 144 int (*sc_dmanext) __P((struct sbic_softc *)); 145 void (*sc_enintr) __P((struct sbic_softc *)); 146 void (*sc_dmastop) __P((struct sbic_softc *)); 147 u_short gtsc_bankmask; /* GVP specific bank selected */ 148 }; 149 150 /* sc_flags */ 151 #define SBICF_ALIVE 0x01 /* controller initialized */ 152 #define SBICF_DCFLUSH 0x02 /* need flush for overlap after dma finishes */ 153 #define SBICF_SELECTED 0x04 /* bus is in selected state. */ 154 #define SBICF_ICMD 0x08 /* Immediate command in execution */ 155 #define SBICF_BADDMA 0x10 /* controller can only DMA to ztwobus space */ 156 #define SBICF_INTR 0x40 /* SBICF interrupt expected */ 157 #define SBICF_INDMA 0x80 /* not used yet, DMA I/O in progress */ 158 159 /* sync states */ 160 #define SYNC_START 0 /* no sync handshake started */ 161 #define SYNC_SENT 1 /* we sent sync request, no answer yet */ 162 #define SYNC_DONE 2 /* target accepted our (or inferior) settings, 163 or it rejected the request and we stay async */ 164 #ifdef DEBUG 165 #define DDB_FOLLOW 0x04 166 #define DDB_IO 0x08 167 #endif 168 extern u_char sbic_inhibit_sync[8]; 169 extern int sbic_no_dma; 170 extern int sbic_clock_override; 171 172 #define PHASE 0x07 /* mask for psns/pctl phase */ 173 #define DATA_OUT_PHASE 0x00 174 #define DATA_IN_PHASE 0x01 175 #define CMD_PHASE 0x02 176 #define STATUS_PHASE 0x03 177 #define BUS_FREE_PHASE 0x04 178 #define ARB_SEL_PHASE 0x05 /* Fuji chip combines arbitration with sel. */ 179 #define MESG_OUT_PHASE 0x06 180 #define MESG_IN_PHASE 0x07 181 182 #define MSG_CMD_COMPLETE 0x00 183 #define MSG_EXT_MESSAGE 0x01 184 #define MSG_SAVE_DATA_PTR 0x02 185 #define MSG_RESTORE_PTR 0x03 186 #define MSG_DISCONNECT 0x04 187 #define MSG_INIT_DETECT_ERROR 0x05 188 #define MSG_ABORT 0x06 189 #define MSG_REJECT 0x07 190 #define MSG_NOOP 0x08 191 #define MSG_PARITY_ERROR 0x09 192 #define MSG_BUS_DEVICE_RESET 0x0C 193 #define MSG_IDENTIFY 0x80 194 #define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */ 195 #define MSG_SYNC_REQ 0x01 196 197 #define MSG_ISIDENTIFY(x) (x&MSG_IDENTIFY) 198 #define IFY_TRN 0x20 199 #define IFY_LUNTRN(x) (x&0x07) 200 #define IFY_LUN(x) (!(x&0x20)) 201 202 /* Check if high bit set */ 203 204 #define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */ 205 #define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */ 206 #define STS_BUSY 0x08 207 #define STS_INTERMED 0x10 /* Intermediate status sent */ 208 #define STS_EXT 0x80 /* Extended status valid */ 209 210 211 /* States returned by our state machine */ 212 213 #define SBIC_STATE_ERROR -1 214 #define SBIC_STATE_DONE 0 215 #define SBIC_STATE_RUNNING 1 216 #define SBIC_STATE_DISCONNECT 2 217 218 /* 219 * XXXX 220 */ 221 struct scsi_fmt_cdb { 222 int len; /* cdb length (in bytes) */ 223 u_char cdb[28]; /* cdb to use on next read/write */ 224 }; 225 226 struct buf; 227 struct scsipi_xfer; 228 229 void sbic_minphys __P((struct buf *bp)); 230 int sbic_scsicmd __P((struct scsipi_xfer *)); 231 void sbicinit __P((struct sbic_softc *)); 232 int sbicintr __P((struct sbic_softc *)); 233 #ifdef DEBUG 234 void sbic_dump __P((struct sbic_softc *dev)); 235 #endif 236 237 #endif /* _SBICVAR_H_ */ 238
Indexes created Sun Oct 12 05:10:08 GMT 2025