| 1 | /* $NetBSD: aic6360var.h,v 1.16 2009/09/22 13:18:28 tsutsui 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 | #ifndef _DEV_IC_AIC6360VAR_H_ |
| 48 | #define _DEV_IC_AIC6360VAR_H_ |
| 49 | |
| 50 | /* |
| 51 | * Acknowledgements: Many of the algorithms used in this driver are |
| 52 | * inspired by the work of Julian Elischer (julian@tfs.com) and |
| 53 | * Charles Hannum (mycroft@duality.gnu.ai.mit.edu). Thanks a million! |
| 54 | */ |
| 55 | |
| 56 | typedef u_long physaddr; |
| 57 | typedef u_long physlen; |
| 58 | |
| 59 | struct aic_dma_seg { |
| 60 | physaddr seg_addr; |
| 61 | physlen seg_len; |
| 62 | }; |
| 63 | |
| 64 | #define AIC_NSEG 16 |
| 65 | |
| 66 | /* |
| 67 | * ACB. Holds additional information for each SCSI command Comments: We |
| 68 | * need a separate scsi command block because we may need to overwrite it |
| 69 | * with a request sense command. Basicly, we refrain from fiddling with |
| 70 | * the scsipi_xfer struct (except do the expected updating of return values). |
| 71 | * We'll generally update: xs->{flags,resid,error,sense,status} and |
| 72 | * occasionally xs->retries. |
| 73 | */ |
| 74 | struct aic_acb { |
| 75 | struct scsipi_generic scsipi_cmd; |
| 76 | int scsipi_cmd_length; |
| 77 | u_char *data_addr; /* Saved data pointer */ |
| 78 | int data_length; /* Residue */ |
| 79 | |
| 80 | u_char target_stat; /* SCSI status byte */ |
| 81 | |
| 82 | #ifdef notdef |
| 83 | struct aic_dma_seg dma[AIC_NSEG]; /* Physical addresses+len */ |
| 84 | #endif |
| 85 | |
| 86 | TAILQ_ENTRY(aic_acb) chain; |
| 87 | struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */ |
| 88 | int flags; |
| 89 | #define ACB_ALLOC 0x01 |
| 90 | #define ACB_NEXUS 0x02 |
| 91 | #define ACB_SENSE 0x04 |
| 92 | #define ACB_ABORT 0x40 |
| 93 | #define ACB_RESET 0x80 |
| 94 | int timeout; |
| 95 | }; |
| 96 | |
| 97 | /* |
| 98 | * Some info about each (possible) target on the SCSI bus. This should |
| 99 | * probably have been a "per target+lunit" structure, but we'll leave it at |
| 100 | * this for now. |
| 101 | */ |
| 102 | struct aic_tinfo { |
| 103 | int cmds; /* #commands processed */ |
| 104 | int dconns; /* #disconnects */ |
| 105 | int touts; /* #timeouts */ |
| 106 | int perrs; /* #parity errors */ |
| 107 | int senses; /* #request sense commands sent */ |
| 108 | ushort lubusy; /* What local units/subr. are busy? */ |
| 109 | u_char flags; |
| 110 | #define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */ |
| 111 | #define DO_WIDE 0x02 /* (Re)Negotiate wide options */ |
| 112 | u_char period; /* Period suggestion */ |
| 113 | u_char offset; /* Offset suggestion */ |
| 114 | u_char width; /* Width suggestion */ |
| 115 | }; |
| 116 | |
| 117 | struct aic_softc { |
| 118 | device_t sc_dev; |
| 119 | |
| 120 | bus_space_tag_t sc_iot; |
| 121 | bus_space_handle_t sc_ioh; |
| 122 | |
| 123 | struct scsipi_adapter sc_adapter; |
| 124 | struct scsipi_channel sc_channel; |
| 125 | |
| 126 | TAILQ_HEAD(, aic_acb) free_list, ready_list, nexus_list; |
| 127 | struct aic_acb *sc_nexus; /* current command */ |
| 128 | struct aic_acb sc_acb[8]; |
| 129 | struct aic_tinfo sc_tinfo[8]; |
| 130 | |
| 131 | /* Data about the current nexus (updated for every cmd switch) */ |
| 132 | u_char *sc_dp; /* Current data pointer */ |
| 133 | size_t sc_dleft; /* Data bytes left to transfer */ |
| 134 | u_char *sc_cp; /* Current command pointer */ |
| 135 | size_t sc_cleft; /* Command bytes left to transfer */ |
| 136 | |
| 137 | /* Adapter state */ |
| 138 | u_char sc_phase; /* Current bus phase */ |
| 139 | u_char sc_prevphase; /* Previous bus phase */ |
| 140 | u_char sc_state; /* State applicable to the adapter */ |
| 141 | #define AIC_INIT 0 |
| 142 | #define AIC_IDLE 1 |
| 143 | #define AIC_SELECTING 2 /* SCSI command is arbiting */ |
| 144 | #define AIC_RESELECTED 3 /* Has been reselected */ |
| 145 | #define AIC_CONNECTED 4 /* Actively using the SCSI bus */ |
| 146 | #define AIC_DISCONNECT 5 /* MSG_DISCONNECT received */ |
| 147 | #define AIC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */ |
| 148 | #define AIC_CLEANING 7 |
| 149 | u_char sc_flags; |
| 150 | #define AIC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */ |
| 151 | #define AIC_ABORTING 0x02 /* Bailing out */ |
| 152 | #define AIC_DOINGDMA 0x04 /* The FIFO data path is active! */ |
| 153 | u_char sc_selid; /* Reselection ID */ |
| 154 | device_t sc_child;/* Our child */ |
| 155 | |
| 156 | /* Message stuff */ |
| 157 | u_char sc_msgpriq; /* Messages we want to send */ |
| 158 | u_char sc_msgoutq; /* Messages sent during last MESSAGE OUT */ |
| 159 | u_char sc_lastmsg; /* Message last transmitted */ |
| 160 | u_char sc_currmsg; /* Message currently ready to transmit */ |
| 161 | #define SEND_DEV_RESET 0x01 |
| 162 | #define SEND_PARITY_ERROR 0x02 |
| 163 | #define SEND_INIT_DET_ERR 0x04 |
| 164 | #define SEND_REJECT 0x08 |
| 165 | #define SEND_IDENTIFY 0x10 |
| 166 | #define SEND_ABORT 0x20 |
| 167 | #define SEND_SDTR 0x40 |
| 168 | #define SEND_WDTR 0x80 |
| 169 | #define AIC_MAX_MSG_LEN 8 |
| 170 | u_char sc_omess[AIC_MAX_MSG_LEN]; |
| 171 | u_char *sc_omp; /* Outgoing message pointer */ |
| 172 | u_char sc_imess[AIC_MAX_MSG_LEN]; |
| 173 | u_char *sc_imp; /* Incoming message pointer */ |
| 174 | |
| 175 | /* Hardware stuff */ |
| 176 | int sc_initiator; /* Our scsi id */ |
| 177 | int sc_freq; /* Clock frequency in MHz */ |
| 178 | int sc_minsync; /* Minimum sync period / 4 */ |
| 179 | int sc_maxsync; /* Maximum sync period / 4 */ |
| 180 | }; |
| 181 | |
| 182 | #if AIC_DEBUG |
| 183 | #define AIC_SHOWACBS 0x01 |
| 184 | #define AIC_SHOWINTS 0x02 |
| 185 | #define AIC_SHOWCMDS 0x04 |
| 186 | #define AIC_SHOWMISC 0x08 |
| 187 | #define AIC_SHOWTRACE 0x10 |
| 188 | #define AIC_SHOWSTART 0x20 |
| 189 | #define AIC_DOBREAK 0x40 |
| 190 | extern int aic_debug; /* AIC_SHOWSTART|AIC_SHOWMISC|AIC_SHOWTRACE; */ |
| 191 | #define AIC_PRINT(b, s) do { \ |
| 192 | if ((aic_debug & (b)) != 0) \ |
| 193 | printf s; \ |
| 194 | } while (/* CONSTCOND */ 0) |
| 195 | #define AIC_BREAK() do { \ |
| 196 | if ((aic_debug & AIC_DOBREAK) != 0) \ |
| 197 | Debugger(); \ |
| 198 | } while (/* CONSTCOND */ 0) |
| 199 | #define AIC_ASSERT(x) do { \ |
| 200 | if (! (x)) { \ |
| 201 | printf("%s at line %d: assertion failed\n", \ |
| 202 | device_xname(sc->sc_dev), __LINE__); \ |
| 203 | Debugger(); \ |
| 204 | } } while (/* CONSTCOND */ 0) |
| 205 | #else |
| 206 | #define AIC_PRINT(b, s) /* NOTHING */ |
| 207 | #define AIC_BREAK() /* NOTHING */ |
| 208 | #define AIC_ASSERT(x) /* NOTHING */ |
| 209 | #endif |
| 210 | |
| 211 | #define AIC_ACBS(s) AIC_PRINT(AIC_SHOWACBS, s) |
| 212 | #define AIC_INTS(s) AIC_PRINT(AIC_SHOWINTS, s) |
| 213 | #define AIC_CMDS(s) AIC_PRINT(AIC_SHOWCMDS, s) |
| 214 | #define AIC_MISC(s) AIC_PRINT(AIC_SHOWMISC, s) |
| 215 | #define AIC_TRACE(s) AIC_PRINT(AIC_SHOWTRACE, s) |
| 216 | #define AIC_START(s) AIC_PRINT(AIC_SHOWSTART, s) |
| 217 | |
| 218 | #define AIC_ISA_IOSIZE 0x20 /* XXX */ |
| 219 | |
| 220 | void aicattach(struct aic_softc *); |
| 221 | int aic_activate(device_t, enum devact); |
| 222 | int aic_detach(device_t, int); |
| 223 | int aicintr(void *); |
| 224 | int aic_find(bus_space_tag_t, bus_space_handle_t); |
| 225 | void aic_init(struct aic_softc *, int); |
| 226 | |
| 227 | #endif /* _DEV_IC_AIC6360VAR_H_ */ |
| 228 | |