osiopvar.h revision 1.6.2.1
1 /* $NetBSD: osiopvar.h,v 1.6.2.1 2005/04/29 11:28:52 kent Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Izumi Tsutsui. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * Copyright (c) 1990 The Regents of the University of California. 31 * All rights reserved. 32 * 33 * This code is derived from software contributed to Berkeley by 34 * Van Jacobson of Lawrence Berkeley Laboratory. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)siopvar.h 7.1 (Berkeley) 5/8/90 61 */ 62 63 #define osiop_read_1(sc, reg) \ 64 bus_space_read_1((sc)->sc_bst, (sc)->sc_reg, reg) 65 #define osiop_write_1(sc, reg, val) \ 66 bus_space_write_1((sc)->sc_bst, (sc)->sc_reg, reg, val) 67 68 #define osiop_read_4(sc, reg) \ 69 bus_space_read_4((sc)->sc_bst, (sc)->sc_reg, reg) 70 #define osiop_write_4(sc, reg, val) \ 71 bus_space_write_4((sc)->sc_bst, (sc)->sc_reg, reg, val) 72 73 /* 74 * The largest single request will be MAXPHYS bytes which will require 75 * at most MAXPHYS/NBPG+1 chain elements to describe, i.e. if none of 76 * the buffer pages are physically contiguous (MAXPHYS/NBPG) and the 77 * buffer is not page aligned (+1). 78 */ 79 /* XXX This should be (MAXPHYS / NBPG + 1), but hardcoded in script */ 80 #define OSIOP_NSG (16 + 1) 81 #if MAXPHYS > (PAGE_SIZE * (OSIOP_NSG - 1)) 82 #define OSIOP_MAX_XFER (PAGE_SIZE * (OSIOP_NSG - 1)) 83 #else 84 #define OSIOP_MAX_XFER MAXPHYS 85 #endif 86 87 #define OSIOP_NTGT 8 88 #define OSIOP_NACB 32 /* XXX (PAGE_SIZE / sizeof(osiop_ds)) is better? */ 89 90 /* 91 * Data Structure for SCRIPTS program 92 */ 93 typedef struct buf_table { 94 uint32_t count; 95 uint32_t addr; 96 } buf_table_t; 97 98 struct osiop_ds { 99 uint32_t scsi_addr; /* SCSI ID & sync */ 100 uint32_t pad1; 101 buf_table_t id; /* Identify message */ 102 buf_table_t cmd; /* SCSI command */ 103 buf_table_t status; /* Status */ 104 buf_table_t msg; /* Message */ 105 buf_table_t msgin; /* Message in */ 106 buf_table_t extmsg; /* Extended message in */ 107 buf_table_t synmsg; /* Sync transfer request */ 108 buf_table_t data[OSIOP_NSG]; /* DMA S/G buffers */ 109 110 uint8_t msgout[8]; 111 uint8_t msgbuf[8]; 112 uint8_t stat[8]; 113 } __attribute__((__packed__)); 114 115 /* status can hold the SCSI_* status values, and 2 additional values: */ 116 #define SCSI_OSIOP_NOCHECK 0xfe /* don't check the scsi status */ 117 #define SCSI_OSIOP_NOSTATUS 0xff /* device didn't report status */ 118 119 #define MSG_INVALID 0xff /* dummy value for message buffer */ 120 121 #define OSIOP_DSOFF(x) offsetof(struct osiop_ds, x) 122 #define OSIOP_DSIDOFF OSIOP_DSOFF(msgout[0]) 123 #define OSIOP_DSMSGOFF OSIOP_DSOFF(msgbuf[0]) 124 #define OSIOP_DSMSGINOFF OSIOP_DSOFF(msgbuf[1]) 125 #define OSIOP_DSEXTMSGOFF OSIOP_DSOFF(msgbuf[2]) 126 #define OSIOP_DSSYNMSGOFF OSIOP_DSOFF(msgbuf[3]) 127 #define OSIOP_DSSTATOFF OSIOP_DSOFF(stat[0]) 128 129 /* 130 * ACB. Holds additional information for each SCSI command Comments: 131 * Basicly, we refrain from fiddling with the scsi_xfer struct 132 * (except do the expected updating of return values). 133 * We'll generally update: xs->{flags,resid,error,status} and 134 * occasionally xs->retries. 135 */ 136 struct osiop_acb { 137 TAILQ_ENTRY(osiop_acb) chain; 138 struct scsipi_xfer *xs; /* SCSI xfer ctrl block from upper layer */ 139 struct osiop_softc *sc; /* points back to our adapter */ 140 141 bus_dmamap_t cmddma; /* DMA map for SCSI command */ 142 bus_dmamap_t datadma; /* DMA map for data transfer */ 143 144 struct osiop_ds *ds; /* data structure for this acb */ 145 bus_size_t dsoffset; /* offset of data structure for this acb */ 146 147 bus_size_t cmdlen; /* command length */ 148 bus_size_t datalen; /* transfer data length */ 149 #ifdef OSIOP_DEBUG 150 void *data; /* transfer data buffer ptr */ 151 #endif 152 153 bus_addr_t curaddr; /* current transfer data buffer */ 154 bus_size_t curlen; /* current transfer data length */ 155 156 int status; /* status of this acb */ 157 /* status defs */ 158 #define ACB_S_FREE 0 /* cmd slot is free */ 159 #define ACB_S_READY 1 /* cmd slot is waiting for processing */ 160 #define ACB_S_ACTIVE 2 /* cmd slot is being processed */ 161 #define ACB_S_DONE 3 /* cmd slot has been processed */ 162 163 int flags; /* cmd slot flags */ 164 #define ACB_F_TIMEOUT 0x01 /* command timeout */ 165 166 uint8_t intstat; /* buffer to save sc_flags on disconnect */ 167 }; 168 169 /* 170 * Some info about each (possible) target on the SCSI bus. This should 171 * probably have been a "per target+lunit" structure, but we'll leave it at 172 * this for now. Is there a way to reliably hook it up to sc->fordriver?? 173 */ 174 struct osiop_tinfo { 175 int cmds; /* number of commands processed */ 176 int dconns; /* number of disconnects */ 177 int touts; /* number of timeouts */ 178 int perrs; /* number of parity errors */ 179 int lubusy; /* What local units/subr. are busy? */ 180 int period; /* Period suggestion */ 181 int offset; /* Offset suggestion */ 182 int flags; /* misc flags per each target */ 183 #define TI_NOSYNC 0x01 /* disable sync xfer on this target */ 184 #define TI_NODISC 0x02 /* disable disconnect on this target */ 185 int state; /* negotiation state */ 186 uint8_t sxfer; /* value for SXFER reg */ 187 uint8_t sbcl; /* value for SBCL reg */ 188 }; 189 190 struct osiop_softc { 191 struct device sc_dev; 192 193 bus_space_tag_t sc_bst; /* bus space tag */ 194 bus_space_handle_t sc_reg; /* register I/O handle */ 195 196 bus_dma_tag_t sc_dmat; /* bus dma tag */ 197 bus_dmamap_t sc_scrdma; /* script dma map */ 198 bus_dmamap_t sc_dsdma; /* script data dma map */ 199 200 uint32_t *sc_script; /* ptr to script memory */ 201 struct osiop_ds *sc_ds; /* ptr to data structure memory */ 202 203 int sc_id; /* adapter SCSI id */ 204 int sc_active; /* number of active I/O's */ 205 206 struct osiop_acb *sc_nexus; /* current command */ 207 struct osiop_acb *sc_acb; /* the real command blocks */ 208 209 /* Lists of command blocks */ 210 TAILQ_HEAD(acb_list, osiop_acb) free_list, 211 ready_list, 212 nexus_list; 213 214 struct scsipi_adapter sc_adapter; 215 struct scsipi_channel sc_channel; 216 217 struct osiop_tinfo sc_tinfo[OSIOP_NTGT]; 218 219 int sc_clock_freq; 220 int sc_tcp[4]; 221 int sc_flags; 222 #define OSIOP_INTSOFF 0x80 /* Interrupts turned off */ 223 #define OSIOP_INTDEFER 0x40 /* MD interrupt has been deferred */ 224 #define OSIOP_NODMA 0x02 /* No DMA transfer */ 225 #define OSIOP_ALIVE 0x01 /* controller initialized */ 226 227 int sc_cfflags; /* copy of config flags */ 228 229 int sc_minsync; 230 231 uint8_t sc_dstat; 232 uint8_t sc_sstat0; 233 uint8_t sc_sstat1; 234 uint8_t sc_istat; 235 uint8_t sc_dcntl; 236 uint8_t sc_ctest4; 237 uint8_t sc_ctest7; 238 uint8_t sc_sien; 239 uint8_t sc_dien; 240 }; 241 242 /* negotiation states */ 243 #define NEG_INIT 0 /* Initial negotiate state */ 244 #define NEG_SYNC NEG_INIT /* Negotiate synch transfers */ 245 #define NEG_WAITS 1 /* Waiting for synch negotiation response */ 246 #define NEG_DONE 2 /* Wide and/or sync negotiation done */ 247 248 void osiop_attach(struct osiop_softc *); 249 void osiop_intr(struct osiop_softc *); 250
Indexes created Wed Oct 22 00:09:40 GMT 2025