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); 220