aic6360var.h revision 1.3
1 /* $NetBSD: aic6360var.h,v 1.3 1998/11/19 21:52:59 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995, 1996 Charles M. Hannum. 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. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Charles M. Hannum. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * Copyright (c) 1994 Jarle Greipsland 21 * All rights reserved. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the above copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. The name of the author may not be used to endorse or promote products 32 * derived from this software without specific prior written permission. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 35 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 36 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 37 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 38 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 39 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 40 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 41 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 42 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 43 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 44 * POSSIBILITY OF SUCH DAMAGE. 45 */ 46 47 /* 48 * Acknowledgements: Many of the algorithms used in this driver are 49 * inspired by the work of Julian Elischer (julian (at) tfs.com) and 50 * Charles Hannum (mycroft (at) duality.gnu.ai.mit.edu). Thanks a million! 51 */ 52 53 typedef u_long physaddr; 54 typedef u_long physlen; 55 56 struct aic_dma_seg { 57 physaddr seg_addr; 58 physlen seg_len; 59 }; 60 61 #define AIC_NSEG 16 62 63 /* 64 * ACB. Holds additional information for each SCSI command Comments: We 65 * need a separate scsi command block because we may need to overwrite it 66 * with a request sense command. Basicly, we refrain from fiddling with 67 * the scsipi_xfer struct (except do the expected updating of return values). 68 * We'll generally update: xs->{flags,resid,error,sense,status} and 69 * occasionally xs->retries. 70 */ 71 struct aic_acb { 72 struct scsi_generic scsipi_cmd; 73 int scsipi_cmd_length; 74 u_char *data_addr; /* Saved data pointer */ 75 int data_length; /* Residue */ 76 77 u_char target_stat; /* SCSI status byte */ 78 79 #ifdef notdef 80 struct aic_dma_seg dma[AIC_NSEG]; /* Physical addresses+len */ 81 #endif 82 83 TAILQ_ENTRY(aic_acb) chain; 84 struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */ 85 int flags; 86 #define ACB_ALLOC 0x01 87 #define ACB_NEXUS 0x02 88 #define ACB_SENSE 0x04 89 #define ACB_ABORT 0x40 90 #define ACB_RESET 0x80 91 int timeout; 92 }; 93 94 /* 95 * Some info about each (possible) target on the SCSI bus. This should 96 * probably have been a "per target+lunit" structure, but we'll leave it at 97 * this for now. 98 */ 99 struct aic_tinfo { 100 int cmds; /* #commands processed */ 101 int dconns; /* #disconnects */ 102 int touts; /* #timeouts */ 103 int perrs; /* #parity errors */ 104 int senses; /* #request sense commands sent */ 105 ushort lubusy; /* What local units/subr. are busy? */ 106 u_char flags; 107 #define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */ 108 #define DO_WIDE 0x02 /* (Re)Negotiate wide options */ 109 u_char period; /* Period suggestion */ 110 u_char offset; /* Offset suggestion */ 111 u_char width; /* Width suggestion */ 112 } tinfo_t; 113 114 struct aic_softc { 115 struct device sc_dev; 116 117 bus_space_tag_t sc_iot; 118 bus_space_handle_t sc_ioh; 119 120 struct scsipi_link sc_link; /* prototype for subdevs */ 121 struct scsipi_adapter sc_adapter; 122 123 TAILQ_HEAD(, aic_acb) free_list, ready_list, nexus_list; 124 struct aic_acb *sc_nexus; /* current command */ 125 struct aic_acb sc_acb[8]; 126 struct aic_tinfo sc_tinfo[8]; 127 128 /* Data about the current nexus (updated for every cmd switch) */ 129 u_char *sc_dp; /* Current data pointer */ 130 size_t sc_dleft; /* Data bytes left to transfer */ 131 u_char *sc_cp; /* Current command pointer */ 132 size_t sc_cleft; /* Command bytes left to transfer */ 133 134 /* Adapter state */ 135 u_char sc_phase; /* Current bus phase */ 136 u_char sc_prevphase; /* Previous bus phase */ 137 u_char sc_state; /* State applicable to the adapter */ 138 #define AIC_INIT 0 139 #define AIC_IDLE 1 140 #define AIC_SELECTING 2 /* SCSI command is arbiting */ 141 #define AIC_RESELECTED 3 /* Has been reselected */ 142 #define AIC_CONNECTED 4 /* Actively using the SCSI bus */ 143 #define AIC_DISCONNECT 5 /* MSG_DISCONNECT received */ 144 #define AIC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */ 145 #define AIC_CLEANING 7 146 u_char sc_flags; 147 #define AIC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */ 148 #define AIC_ABORTING 0x02 /* Bailing out */ 149 #define AIC_DOINGDMA 0x04 /* The FIFO data path is active! */ 150 u_char sc_selid; /* Reselection ID */ 151 152 /* Message stuff */ 153 u_char sc_msgpriq; /* Messages we want to send */ 154 u_char sc_msgoutq; /* Messages sent during last MESSAGE OUT */ 155 u_char sc_lastmsg; /* Message last transmitted */ 156 u_char sc_currmsg; /* Message currently ready to transmit */ 157 #define SEND_DEV_RESET 0x01 158 #define SEND_PARITY_ERROR 0x02 159 #define SEND_INIT_DET_ERR 0x04 160 #define SEND_REJECT 0x08 161 #define SEND_IDENTIFY 0x10 162 #define SEND_ABORT 0x20 163 #define SEND_SDTR 0x40 164 #define SEND_WDTR 0x80 165 #define AIC_MAX_MSG_LEN 8 166 u_char sc_omess[AIC_MAX_MSG_LEN]; 167 u_char *sc_omp; /* Outgoing message pointer */ 168 u_char sc_imess[AIC_MAX_MSG_LEN]; 169 u_char *sc_imp; /* Incoming message pointer */ 170 171 /* Hardware stuff */ 172 int sc_initiator; /* Our scsi id */ 173 int sc_freq; /* Clock frequency in MHz */ 174 int sc_minsync; /* Minimum sync period / 4 */ 175 int sc_maxsync; /* Maximum sync period / 4 */ 176 }; 177 178 #if AIC_DEBUG 179 #define AIC_SHOWACBS 0x01 180 #define AIC_SHOWINTS 0x02 181 #define AIC_SHOWCMDS 0x04 182 #define AIC_SHOWMISC 0x08 183 #define AIC_SHOWTRACE 0x10 184 #define AIC_SHOWSTART 0x20 185 #define AIC_DOBREAK 0x40 186 extern int aic_debug; /* AIC_SHOWSTART|AIC_SHOWMISC|AIC_SHOWTRACE; */ 187 #define AIC_PRINT(b, s) do {if ((aic_debug & (b)) != 0) printf s;} while (0) 188 #define AIC_BREAK() do {if ((aic_debug & AIC_DOBREAK) != 0) Debugger();} while (0) 189 #define AIC_ASSERT(x) do {if (x) {} else {printf("%s at line %d: assertion failed\n", sc->sc_dev.dv_xname, __LINE__); Debugger();}} while (0) 190 #else 191 #define AIC_PRINT(b, s) 192 #define AIC_BREAK() 193 #define AIC_ASSERT(x) 194 #endif 195 196 #define AIC_ACBS(s) AIC_PRINT(AIC_SHOWACBS, s) 197 #define AIC_INTS(s) AIC_PRINT(AIC_SHOWINTS, s) 198 #define AIC_CMDS(s) AIC_PRINT(AIC_SHOWCMDS, s) 199 #define AIC_MISC(s) AIC_PRINT(AIC_SHOWMISC, s) 200 #define AIC_TRACE(s) AIC_PRINT(AIC_SHOWTRACE, s) 201 #define AIC_START(s) AIC_PRINT(AIC_SHOWSTART, s) 202 203 #define AIC_ISA_IOSIZE 0x20 /* XXX */ 204 205 void aicattach __P((struct aic_softc *)); 206 int aicintr __P((void *)); 207 int aic_find __P((bus_space_tag_t, bus_space_handle_t)); 208 void aic_isa_attach __P((struct device *, struct device *, void *)); 209
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