Annotation of sys/dev/ic/aic6360var.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: aic6360var.h,v 1.6 2006/06/03 01:51:54 martin Exp $ */
! 2: /* $NetBSD: aic6360.c,v 1.52 1996/12/10 21:27:51 thorpej Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1994, 1995, 1996 Charles Hannum. 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. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed by Charles M. Hannum.
! 18: * 4. The name of the author may not be used to endorse or promote products
! 19: * derived from this software without specific prior written permission.
! 20: *
! 21: * Copyright (c) 1994 Jarle Greipsland
! 22: * All rights reserved.
! 23: *
! 24: * Redistribution and use in source and binary forms, with or without
! 25: * modification, are permitted provided that the following conditions
! 26: * are met:
! 27: * 1. Redistributions of source code must retain the above copyright
! 28: * notice, this list of conditions and the following disclaimer.
! 29: * 2. Redistributions in binary form must reproduce the above copyright
! 30: * notice, this list of conditions and the following disclaimer in the
! 31: * documentation and/or other materials provided with the distribution.
! 32: * 3. The name of the author may not be used to endorse or promote products
! 33: * derived from this software without specific prior written permission.
! 34: *
! 35: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 36: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 37: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 38: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 39: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 40: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 41: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 42: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 43: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 44: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 45: * POSSIBILITY OF SUCH DAMAGE.
! 46: */
! 47:
! 48: /*
! 49: * Acknowledgements: Many of the algorithms used in this driver are
! 50: * inspired by the work of Julian Elischer (julian@tfs.com) and
! 51: * Charles Hannum (mycroft@duality.gnu.ai.mit.edu). Thanks a million!
! 52: */
! 53:
! 54: #define AIC_NPORTS 0x20 /* I/O port space used */
! 55:
! 56: typedef u_long physaddr;
! 57: typedef u_long physlen;
! 58:
! 59: #ifdef notyet
! 60: struct aic_dma_seg {
! 61: physaddr seg_addr;
! 62: physlen seg_len;
! 63: };
! 64:
! 65: #define AIC_NSEG 16
! 66: #endif
! 67:
! 68: /*
! 69: * ACB. Holds additional information for each SCSI command Comments: We
! 70: * need a separate scsi command block because we may need to overwrite it
! 71: * with a request sense command. Basicly, we refrain from fiddling with
! 72: * the scsi_xfer struct (except do the expected updating of return values).
! 73: * We'll generally update: xs->{flags,resid,error,sense,status} and
! 74: * occasionally xs->retries.
! 75: */
! 76: struct aic_acb {
! 77: struct scsi_generic scsi_cmd;
! 78: int scsi_cmd_length;
! 79: u_char *data_addr; /* Saved data pointer */
! 80: int data_length; /* Residue */
! 81:
! 82: u_char target_stat; /* SCSI status byte */
! 83:
! 84: #ifdef notdef
! 85: struct aic_dma_seg dma[AIC_NSEG]; /* Physical addresses+len */
! 86: #endif
! 87:
! 88: TAILQ_ENTRY(aic_acb) chain;
! 89: struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */
! 90: int flags;
! 91: #define ACB_ALLOC 0x01
! 92: #define ACB_NEXUS 0x02
! 93: #define ACB_SENSE 0x04
! 94: #define ACB_ABORT 0x40
! 95: #define ACB_RESET 0x80
! 96: int timeout;
! 97: };
! 98:
! 99: /*
! 100: * Some info about each (possible) target on the SCSI bus. This should
! 101: * probably have been a "per target+lunit" structure, but we'll leave it at
! 102: * this for now.
! 103: */
! 104: struct aic_tinfo {
! 105: int cmds; /* #commands processed */
! 106: int dconns; /* #disconnects */
! 107: int touts; /* #timeouts */
! 108: int perrs; /* #parity errors */
! 109: int senses; /* #request sense commands sent */
! 110: ushort lubusy; /* What local units/subr. are busy? */
! 111: u_char flags;
! 112: #define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */
! 113: #define DO_WIDE 0x02 /* (Re)Negotiate wide options */
! 114: u_char period; /* Period suggestion */
! 115: u_char offset; /* Offset suggestion */
! 116: u_char width; /* Width suggestion */
! 117: };
! 118:
! 119: struct aic_softc {
! 120: struct device sc_dev;
! 121: void *sc_ih;
! 122:
! 123: bus_space_tag_t sc_iot;
! 124: bus_space_handle_t sc_ioh;
! 125: int sc_irq, sc_drq;
! 126:
! 127: struct scsi_link sc_link; /* prototype for subdevs */
! 128:
! 129: TAILQ_HEAD(, aic_acb) free_list, ready_list, nexus_list;
! 130: struct aic_acb *sc_nexus; /* current command */
! 131: struct aic_acb sc_acb[8];
! 132: struct aic_tinfo sc_tinfo[8];
! 133:
! 134: /* Data about the current nexus (updated for every cmd switch) */
! 135: u_char *sc_dp; /* Current data pointer */
! 136: size_t sc_dleft; /* Data bytes left to transfer */
! 137: u_char *sc_cp; /* Current command pointer */
! 138: size_t sc_cleft; /* Command bytes left to transfer */
! 139:
! 140: /* Adapter state */
! 141: u_char sc_phase; /* Current bus phase */
! 142: u_char sc_prevphase; /* Previous bus phase */
! 143: u_char sc_state; /* State applicable to the adapter */
! 144: #define AIC_INIT 0
! 145: #define AIC_IDLE 1
! 146: #define AIC_SELECTING 2 /* SCSI command is arbiting */
! 147: #define AIC_RESELECTED 3 /* Has been reselected */
! 148: #define AIC_CONNECTED 4 /* Actively using the SCSI bus */
! 149: #define AIC_DISCONNECT 5 /* MSG_DISCONNECT received */
! 150: #define AIC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */
! 151: #define AIC_CLEANING 7
! 152: u_char sc_flags;
! 153: #define AIC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */
! 154: #define AIC_ABORTING 0x02 /* Bailing out */
! 155: #define AIC_DOINGDMA 0x04 /* The FIFO data path is active! */
! 156: u_char sc_selid; /* Reselection ID */
! 157:
! 158: /* Message stuff */
! 159: u_char sc_msgpriq; /* Messages we want to send */
! 160: u_char sc_msgoutq; /* Messages sent during last MESSAGE OUT */
! 161: u_char sc_lastmsg; /* Message last transmitted */
! 162: u_char sc_currmsg; /* Message currently ready to transmit */
! 163: #define SEND_DEV_RESET 0x01
! 164: #define SEND_PARITY_ERROR 0x02
! 165: #define SEND_INIT_DET_ERR 0x04
! 166: #define SEND_REJECT 0x08
! 167: #define SEND_IDENTIFY 0x10
! 168: #define SEND_ABORT 0x20
! 169: #define SEND_SDTR 0x40
! 170: #define SEND_WDTR 0x80
! 171: #define AIC_MAX_MSG_LEN 8
! 172: u_char sc_omess[AIC_MAX_MSG_LEN];
! 173: u_char *sc_omp; /* Outgoing message pointer */
! 174: u_char sc_imess[AIC_MAX_MSG_LEN];
! 175: u_char *sc_imp; /* Incoming message pointer */
! 176:
! 177: /* Hardware stuff */
! 178: int sc_initiator; /* Our scsi id */
! 179: int sc_freq; /* Clock frequency in MHz */
! 180: int sc_minsync; /* Minimum sync period / 4 */
! 181: int sc_maxsync; /* Maximum sync period / 4 */
! 182: };
! 183:
! 184: #if AIC_DEBUG
! 185: #define AIC_SHOWACBS 0x01
! 186: #define AIC_SHOWINTS 0x02
! 187: #define AIC_SHOWCMDS 0x04
! 188: #define AIC_SHOWMISC 0x08
! 189: #define AIC_SHOWTRACE 0x10
! 190: #define AIC_SHOWSTART 0x20
! 191: #define AIC_DOBREAK 0x40
! 192: #define AIC_PRINT(b, s) do {if ((aic_debug & (b)) != 0) printf s;} while (0)
! 193: #define AIC_BREAK() \
! 194: do { if ((aic_debug & AIC_DOBREAK) != 0) Debugger(); } while (0)
! 195: #define AIC_ASSERT(x) \
! 196: do { \
! 197: if (!x) { \
! 198: printf("%s at line %d: assertion failed\n", \
! 199: sc->sc_dev.dv_xname, __LINE__); \
! 200: Debugger(); \
! 201: } \
! 202: } while (0)
! 203: #else
! 204: #define AIC_PRINT(b, s)
! 205: #define AIC_BREAK()
! 206: #define AIC_ASSERT(x)
! 207: #endif
! 208:
! 209: #define AIC_ACBS(s) AIC_PRINT(AIC_SHOWACBS, s)
! 210: #define AIC_INTS(s) AIC_PRINT(AIC_SHOWINTS, s)
! 211: #define AIC_CMDS(s) AIC_PRINT(AIC_SHOWCMDS, s)
! 212: #define AIC_MISC(s) AIC_PRINT(AIC_SHOWMISC, s)
! 213: #define AIC_TRACE(s) AIC_PRINT(AIC_SHOWTRACE, s)
! 214: #define AIC_START(s) AIC_PRINT(AIC_SHOWSTART, s)
! 215:
! 216: void aicattach(struct aic_softc *);
! 217: int aic_detach(struct device *, int);
! 218: int aicintr(void *);
! 219: int aic_find(bus_space_tag_t, bus_space_handle_t);
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