1 /* $NetBSD: mb89352var.h,v 1.10 2005/12/11 12:21:27 christos Exp $ */ 2 /* NecBSD: mb89352var.h,v 1.4 1998/03/14 07:31:22 kmatsuda Exp */ 3 4 /*- 5 * Copyright (c) 1996,97,98,99 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Charles M. Hannum, Masaru Oki and Kouichi Matsuda. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Charles M. Hannum. 22 * 4. The name of the author may not be used to endorse or promote products 23 * derived from this software without specific prior written permission. 24 * 25 * Copyright (c) 1994 Jarle Greipsland 26 * All rights reserved. 27 * 28 * Redistribution and use in source and binary forms, with or without 29 * modification, are permitted provided that the following conditions 30 * are met: 31 * 1. Redistributions of source code must retain the above copyright 32 * notice, this list of conditions and the following disclaimer. 33 * 2. Redistributions in binary form must reproduce the above copyright 34 * notice, this list of conditions and the following disclaimer in the 35 * documentation and/or other materials provided with the distribution. 36 * 3. The name of the author may not be used to endorse or promote products 37 * derived from this software without specific prior written permission. 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 40 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 41 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 42 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 43 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 44 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 45 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 48 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 49 * POSSIBILITY OF SUCH DAMAGE. 50 */ 51 /* 52 * [NetBSD for NEC PC-98 series] 53 * Copyright (c) 1996, 1997, 1998 54 * NetBSD/pc98 porting staff. All rights reserved. 55 * Copyright (c) 1996, 1997, 1998 56 * Kouich Matsuda. All rights reserved. 57 */ 58 59 #ifndef _MB89352VAR_H_ 60 #define _MB89352VAR_H_ 61 /* 62 * ACB. Holds additional information for each SCSI command Comments: We 63 * need a separate scsi command block because we may need to overwrite it 64 * with a request sense command. Basicly, we refrain from fiddling with 65 * the scsi_xfer struct (except do the expected updating of return values). 66 * We'll generally update: xs->{flags,resid,error,sense,status} and 67 * occasionally xs->retries. 68 */ 69 struct spc_acb { 70 struct scsipi_generic scsipi_cmd; 71 int scsipi_cmd_length; 72 u_char *data_addr; /* Saved data pointer */ 73 int data_length; /* Residue */ 74 75 u_char target_stat; /* SCSI status byte */ 76 77 #ifdef notdef 78 struct spc_dma_seg dma[SPC_NSEG]; /* Physical addresses+len */ 79 #endif 80 81 TAILQ_ENTRY(spc_acb) chain; 82 struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */ 83 int flags; 84 #define ACB_ALLOC 0x01 85 #define ACB_NEXUS 0x02 86 #define ACB_SENSE 0x04 87 #define ACB_ABORT 0x40 88 #define ACB_RESET 0x80 89 int timeout; 90 }; 91 92 /* 93 * Some info about each (possible) target on the SCSI bus. This should 94 * probably have been a "per target+lunit" structure, but we'll leave it at 95 * this for now. 96 */ 97 struct spc_tinfo { 98 int cmds; /* #commands processed */ 99 int dconns; /* #disconnects */ 100 int touts; /* #timeouts */ 101 int perrs; /* #parity errors */ 102 int senses; /* #request sense commands sent */ 103 ushort lubusy; /* What local units/subr. are busy? */ 104 u_char flags; 105 #define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */ 106 #define DO_WIDE 0x02 /* (Re)Negotiate wide options */ 107 u_char period; /* Period suggestion */ 108 u_char offset; /* Offset suggestion */ 109 u_char width; /* Width suggestion */ 110 }; 111 112 struct spc_softc { 113 struct device sc_dev; 114 115 bus_space_tag_t sc_iot; 116 bus_space_handle_t sc_ioh; 117 118 struct scsipi_channel sc_channel; /* prototype for subdevs */ 119 struct scsipi_adapter sc_adapter; 120 121 TAILQ_HEAD(, spc_acb) free_list, ready_list, nexus_list; 122 struct spc_acb *sc_nexus; /* current command */ 123 struct spc_acb sc_acb[8]; 124 struct spc_tinfo sc_tinfo[8]; 125 126 /* Data about the current nexus (updated for every cmd switch) */ 127 u_char *sc_dp; /* Current data pointer */ 128 size_t sc_dleft; /* Data bytes left to transfer */ 129 u_char *sc_cp; /* Current command pointer */ 130 size_t sc_cleft; /* Command bytes left to transfer */ 131 132 /* Adapter state */ 133 u_char sc_phase; /* Current bus phase */ 134 u_char sc_prevphase; /* Previous bus phase */ 135 u_char sc_state; /* State applicable to the adapter */ 136 #define SPC_INIT 0 137 #define SPC_IDLE 1 138 #define SPC_SELECTING 2 /* SCSI command is arbiting */ 139 #define SPC_RESELECTED 3 /* Has been reselected */ 140 #define SPC_CONNECTED 4 /* Actively using the SCSI bus */ 141 #define SPC_DISCONNECT 5 /* MSG_DISCONNECT received */ 142 #define SPC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */ 143 #define SPC_CLEANING 7 144 u_char sc_flags; 145 #define SPC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */ 146 #define SPC_ABORTING 0x02 /* Bailing out */ 147 #define SPC_DOINGDMA 0x04 /* doing DMA */ 148 #define SPC_INACTIVE 0x80 /* The FIFO data path is active! */ 149 u_char sc_selid; /* Reselection ID */ 150 struct device *sc_child;/* Our child */ 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 SPC_MAX_MSG_LEN 8 166 u_char sc_omess[SPC_MAX_MSG_LEN]; 167 u_char *sc_omp; /* Outgoing message pointer */ 168 u_char sc_imess[SPC_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 /* DMA function set from MD code */ 178 void (*sc_dma_start)(struct spc_softc *, void *, size_t, int); 179 void (*sc_dma_done)(struct spc_softc *); 180 }; 181 182 #if SPC_DEBUG 183 #define SPC_SHOWACBS 0x01 184 #define SPC_SHOWINTS 0x02 185 #define SPC_SHOWCMDS 0x04 186 #define SPC_SHOWMISC 0x08 187 #define SPC_SHOWTRACE 0x10 188 #define SPC_SHOWSTART 0x20 189 #define SPC_DOBREAK 0x40 190 extern int spc_debug; /* SPC_SHOWSTART|SPC_SHOWMISC|SPC_SHOWTRACE; */ 191 #define SPC_PRINT(b, s) do {if ((spc_debug & (b)) != 0) printf s;} while (0) 192 #define SPC_BREAK() do {if ((spc_debug & SPC_DOBREAK) != 0) Debugger();} while (0) 193 #define SPC_ASSERT(x) do {if (x) {} else {printf("%s at line %d: assertion failed\n", sc->sc_dev.dv_xname, __LINE__); Debugger();}} while (0) 194 #else 195 #define SPC_PRINT(b, s) 196 #define SPC_BREAK() 197 #define SPC_ASSERT(x) 198 #endif 199 200 #define SPC_ACBS(s) SPC_PRINT(SPC_SHOWACBS, s) 201 #define SPC_INTS(s) SPC_PRINT(SPC_SHOWINTS, s) 202 #define SPC_CMDS(s) SPC_PRINT(SPC_SHOWCMDS, s) 203 #define SPC_MISC(s) SPC_PRINT(SPC_SHOWMISC, s) 204 #define SPC_TRACE(s) SPC_PRINT(SPC_SHOWTRACE, s) 205 #define SPC_START(s) SPC_PRINT(SPC_SHOWSTART, s) 206 207 void spc_attach(struct spc_softc *); 208 int spc_activate(struct device *, enum devact); 209 int spc_detach(struct device *, int); 210 int spc_intr(void *); 211 int spc_find(bus_space_tag_t, bus_space_handle_t, int); 212 void spc_init(struct spc_softc *, int); 213 void spc_sched(struct spc_softc *); 214 #endif /* _MB89352VAR_H_ */ 215