Annotation of sys/dev/ic/osiopvar.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: osiopvar.h,v 1.10 2007/04/13 18:34:48 krw Exp $ */
! 2: /* $NetBSD: osiopvar.h,v 1.3 2002/05/14 02:58:35 matt Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2001 Izumi Tsutsui. All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. The name of the author may not be used to endorse or promote products
! 16: * derived from this software without specific prior written permission.
! 17: *
! 18: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 19: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 20: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 21: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 22: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 23: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 24: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 25: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 26: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 27: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 28: */
! 29:
! 30: /*
! 31: * Copyright (c) 1990 The Regents of the University of California.
! 32: * All rights reserved.
! 33: *
! 34: * This code is derived from software contributed to Berkeley by
! 35: * Van Jacobson of Lawrence Berkeley Laboratory.
! 36: *
! 37: * Redistribution and use in source and binary forms, with or without
! 38: * modification, are permitted provided that the following conditions
! 39: * are met:
! 40: * 1. Redistributions of source code must retain the above copyright
! 41: * notice, this list of conditions and the following disclaimer.
! 42: * 2. Redistributions in binary form must reproduce the above copyright
! 43: * notice, this list of conditions and the following disclaimer in the
! 44: * documentation and/or other materials provided with the distribution.
! 45: * 3. Neither the name of the University nor the names of its contributors
! 46: * may be used to endorse or promote products derived from this software
! 47: * without specific prior written permission.
! 48: *
! 49: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 50: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 51: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 52: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 53: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 54: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 55: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 56: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 57: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 58: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 59: * SUCH DAMAGE.
! 60: *
! 61: * @(#)siopvar.h 7.1 (Berkeley) 5/8/90
! 62: */
! 63:
! 64: #define osiop_read_1(sc, reg) \
! 65: bus_space_read_1((sc)->sc_bst, (sc)->sc_reg, reg)
! 66: #define osiop_write_1(sc, reg, val) \
! 67: bus_space_write_1((sc)->sc_bst, (sc)->sc_reg, reg, val)
! 68:
! 69: #define osiop_read_4(sc, reg) \
! 70: bus_space_read_4((sc)->sc_bst, (sc)->sc_reg, reg)
! 71: #define osiop_write_4(sc, reg, val) \
! 72: bus_space_write_4((sc)->sc_bst, (sc)->sc_reg, reg, val)
! 73:
! 74: /*
! 75: * The largest single request will be MAXPHYS bytes which will require
! 76: * at most MAXPHYS/NBPG+1 chain elements to describe, i.e. if none of
! 77: * the buffer pages are physically contiguous (MAXPHYS/NBPG) and the
! 78: * buffer is not page aligned (+1).
! 79: */
! 80: /* XXX This should be (MAXPHYS / NBPG + 1), but hardcoded in script */
! 81: #define OSIOP_NSG (16 + 1)
! 82: #if MAXPHYS > (PAGE_SIZE * (OSIOP_NSG - 1))
! 83: #define OSIOP_MAX_XFER (PAGE_SIZE * (OSIOP_NSG - 1))
! 84: #else
! 85: #define OSIOP_MAX_XFER MAXPHYS
! 86: #endif
! 87:
! 88: #define OSIOP_NTGT 8
! 89: #define OSIOP_NACB 32 /* XXX (PAGE_SIZE / sizeof(osiop_ds)) is better? */
! 90:
! 91: /*
! 92: * Data Structure for SCRIPTS program
! 93: */
! 94: typedef struct buf_table {
! 95: u_int32_t count;
! 96: u_int32_t addr;
! 97: } buf_table_t;
! 98:
! 99: struct osiop_ds {
! 100: u_int32_t scsi_addr; /* SCSI ID & sync */
! 101: u_int32_t pad1;
! 102: buf_table_t id; /* Identify message */
! 103: buf_table_t cmd; /* SCSI command */
! 104: buf_table_t status; /* Status */
! 105: buf_table_t msg; /* Message */
! 106: buf_table_t msgin; /* Message in */
! 107: buf_table_t extmsg; /* Extended message in */
! 108: buf_table_t synmsg; /* Sync transfer request */
! 109: buf_table_t data[OSIOP_NSG]; /* DMA S/G buffers */
! 110:
! 111: u_int8_t msgout[8];
! 112: u_int8_t msgbuf[8];
! 113: u_int8_t stat[8];
! 114:
! 115: struct scsi_generic scsi_cmd; /* DMA'able copy of xs->cmd */
! 116: u_int32_t pad[1+3]; /* pad to 256 bytes */
! 117: } __packed;
! 118:
! 119: /* status can hold the SCSI_* status values, and 2 additional values: */
! 120: #define SCSI_OSIOP_NOCHECK 0xfe /* don't check the scsi status */
! 121: #define SCSI_OSIOP_NOSTATUS 0xff /* device didn't report status */
! 122:
! 123: #define MSG_INVALID 0xff /* dummy value for message buffer */
! 124:
! 125: #define OSIOP_DSOFF(x) offsetof(struct osiop_ds, x)
! 126: #define OSIOP_DSIDOFF OSIOP_DSOFF(msgout[0])
! 127: #define OSIOP_DSMSGOFF OSIOP_DSOFF(msgbuf[0])
! 128: #define OSIOP_DSMSGINOFF OSIOP_DSOFF(msgbuf[1])
! 129: #define OSIOP_DSEXTMSGOFF OSIOP_DSOFF(msgbuf[2])
! 130: #define OSIOP_DSSYNMSGOFF OSIOP_DSOFF(msgbuf[3])
! 131: #define OSIOP_DSSTATOFF OSIOP_DSOFF(stat[0])
! 132: #define OSIOP_DSCMDOFF OSIOP_DSOFF(scsi_cmd)
! 133:
! 134: /*
! 135: * ACB. Holds additional information for each SCSI command Comments:
! 136: * Basicly, we refrain from fiddling with the scsi_xfer struct
! 137: * (except do the expected updating of return values).
! 138: * We'll generally update: xs->{flags,resid,error,status} and
! 139: * occasionally xs->retries.
! 140: */
! 141: struct osiop_acb {
! 142: TAILQ_ENTRY(osiop_acb) chain;
! 143: struct scsi_xfer *xs; /* SCSI xfer ctrl block from upper layer */
! 144: struct osiop_softc *sc; /* points back to our adapter */
! 145:
! 146: bus_dmamap_t datadma; /* DMA map for data transfer */
! 147:
! 148: struct osiop_ds *ds; /* data structure for this acb */
! 149: bus_size_t dsoffset; /* offset of data structure for this acb */
! 150:
! 151: int xsflags; /* copy of xs->flags */
! 152: int datalen;
! 153: void *data; /* transfer data buffer ptr */
! 154:
! 155: bus_addr_t curaddr; /* current transfer data buffer */
! 156: bus_size_t curlen; /* current transfer data length */
! 157:
! 158: int status; /* status of this acb */
! 159: /* status defs */
! 160: #define ACB_S_FREE 0 /* cmd slot is free */
! 161: #define ACB_S_READY 1 /* cmd slot is waiting for processing */
! 162: #define ACB_S_ACTIVE 2 /* cmd slot is being processed */
! 163: #define ACB_S_DONE 3 /* cmd slot has been processed */
! 164:
! 165: int flags; /* cmd slot flags */
! 166: #define ACB_F_TIMEOUT 0x01 /* command timeout */
! 167: #define ACB_F_AUTOSENSE 0x02 /* request sense due to SCSI_CHECK */
! 168:
! 169: u_int8_t intstat; /* buffer to save sc_flags on disconnect */
! 170: };
! 171:
! 172: /*
! 173: * Some info about each (possible) target on the SCSI bus. This should
! 174: * probably have been a "per target+lunit" structure, but we'll leave it at
! 175: * this for now. Is there a way to reliably hook it up to sc->fordriver??
! 176: */
! 177: struct osiop_tinfo {
! 178: int cmds; /* number of commands processed */
! 179: int senses; /* number of sense requests */
! 180: int dconns; /* number of disconnects */
! 181: int touts; /* number of timeouts */
! 182: int perrs; /* number of parity errors */
! 183: int lubusy; /* What local units/subr. are busy? */
! 184: int period; /* Period suggestion */
! 185: int offset; /* Offset suggestion */
! 186: int flags; /* misc flags per each target */
! 187: #define TI_NOSYNC 0x01 /* disable sync xfer on this target */
! 188: #define TI_NODISC 0x02 /* disable disconnect on this target */
! 189: int state; /* negotiation state */
! 190: u_int8_t sxfer; /* value for SXFER reg */
! 191: u_int8_t sbcl; /* value for SBCL reg */
! 192: };
! 193:
! 194: struct osiop_softc {
! 195: struct device sc_dev;
! 196:
! 197: bus_space_tag_t sc_bst; /* bus space tag */
! 198: bus_space_handle_t sc_reg; /* register I/O handle */
! 199:
! 200: bus_dma_tag_t sc_dmat; /* bus dma tag */
! 201: bus_dmamap_t sc_scrdma; /* script dma map */
! 202: bus_dmamap_t sc_dsdma; /* script data dma map */
! 203:
! 204: u_int32_t *sc_script; /* ptr to script memory */
! 205: struct osiop_ds *sc_ds; /* ptr to data structure memory */
! 206:
! 207: int sc_id; /* adapter SCSI id */
! 208: int sc_active; /* number of active I/O's */
! 209:
! 210: struct osiop_acb *sc_nexus; /* current command */
! 211: struct osiop_acb *sc_acb; /* the real command blocks */
! 212:
! 213: /* Lists of command blocks */
! 214: TAILQ_HEAD(acb_list, osiop_acb) free_list,
! 215: ready_list,
! 216: nexus_list;
! 217:
! 218: struct scsi_link sc_link;
! 219:
! 220: struct osiop_tinfo sc_tinfo[OSIOP_NTGT];
! 221:
! 222: int sc_clock_freq;
! 223: int sc_tcp[4];
! 224: int sc_flags;
! 225: #define OSIOP_INTSOFF 0x80 /* Interrupts turned off */
! 226: #define OSIOP_INTDEFER 0x40 /* MD interrupt has been deferred */
! 227: #define OSIOP_NODMA 0x02 /* No DMA transfer */
! 228: #define OSIOP_ALIVE 0x01 /* controller initialized */
! 229:
! 230: int sc_cfflags; /* copy of config flags */
! 231:
! 232: int sc_minsync;
! 233:
! 234: u_int8_t sc_dstat;
! 235: u_int8_t sc_sstat0;
! 236: u_int8_t sc_sstat1;
! 237: u_int8_t sc_istat;
! 238: u_int8_t sc_dcntl;
! 239: u_int8_t sc_ctest7;
! 240: u_int8_t sc_dmode;
! 241: u_int8_t sc_sien;
! 242: u_int8_t sc_dien;
! 243: };
! 244:
! 245: /* negotiation states */
! 246: #define NEG_INIT 0 /* Initial negotiate state */
! 247: #define NEG_SYNC NEG_INIT /* Negotiate synch transfers */
! 248: #define NEG_WAITS 1 /* Waiting for synch negotiation response */
! 249: #define NEG_DONE 2 /* Wide and/or sync negotiation done */
! 250:
! 251: void osiop_attach(struct osiop_softc *);
! 252: void osiop_intr(struct osiop_softc *);
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