1 /* $OpenBSD: mb89352var.h,v 1.6 2017/04/30 16:45:45 mpi Exp $ */ 2 /* $NetBSD: mb89352var.h,v 1.6 2003/08/02 12:48:09 tsutsui Exp $ */ 3 /* NecBSD: mb89352var.h,v 1.4 1998/03/14 07:31:22 kmatsuda Exp */ 4 5 /*- 6 * Copyright (c) 1996,97,98,99 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Charles M. Hannum, Masaru Oki and Kouichi Matsuda. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by Charles M. Hannum. 23 * 4. The name of the author may not be used to endorse or promote products 24 * derived from this software without specific prior written permission. 25 * 26 * Copyright (c) 1994 Jarle Greipsland 27 * All rights reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions 31 * are met: 32 * 1. Redistributions of source code must retain the above copyright 33 * notice, this list of conditions and the following disclaimer. 34 * 2. Redistributions in binary form must reproduce the above copyright 35 * notice, this list of conditions and the following disclaimer in the 36 * documentation and/or other materials provided with the distribution. 37 * 3. The name of the author may not be used to endorse or promote products 38 * derived from this software without specific prior written permission. 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 41 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 42 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 43 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 44 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 45 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 46 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 49 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 50 * POSSIBILITY OF SUCH DAMAGE. 51 */ 52 /* 53 * [NetBSD for NEC PC-98 series] 54 * Copyright (c) 1996, 1997, 1998 55 * NetBSD/pc98 porting staff. All rights reserved. 56 * Copyright (c) 1996, 1997, 1998 57 * Kouich Matsuda. All rights reserved. 58 */ 59 60 #ifndef _MB89352VAR_H_ 61 #define _MB89352VAR_H_ 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 scsi_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 spc_acb { 72 struct scsi_generic scsi_cmd; 73 int scsi_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 spc_dma_seg dma[SPC_NSEG]; /* Physical addresses+len */ 81 #endif 82 83 TAILQ_ENTRY(spc_acb) chain; 84 struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */ 85 int flags; 86 #define ACB_NEXUS 0x02 87 #define ACB_SENSE 0x04 88 #define ACB_ABORT 0x40 89 #define ACB_RESET 0x80 90 int timeout; 91 }; 92 93 /* 94 * Some info about each (possible) target on the SCSI bus. This should 95 * probably have been a "per target+lunit" structure, but we'll leave it at 96 * this for now. 97 */ 98 struct spc_tinfo { 99 int cmds; /* #commands processed */ 100 int dconns; /* #disconnects */ 101 int touts; /* #timeouts */ 102 int perrs; /* #parity errors */ 103 int senses; /* #request sense commands sent */ 104 ushort lubusy; /* What local units/subr. are busy? */ 105 u_char flags; 106 #define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */ 107 #define DO_WIDE 0x02 /* (Re)Negotiate wide options */ 108 u_char period; /* Period suggestion */ 109 u_char offset; /* Offset suggestion */ 110 u_char width; /* Width suggestion */ 111 }; 112 113 struct spc_softc { 114 struct device sc_dev; 115 116 bus_space_tag_t sc_iot; 117 bus_space_handle_t sc_ioh; 118 119 struct scsi_link sc_link; /* prototype for subdevs */ 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 struct mutex sc_acb_mtx; 126 struct scsi_iopool sc_iopool; 127 128 /* Data about the current nexus (updated for every cmd switch) */ 129 u_char *sc_dp; /* Current data pointer */ 130 ssize_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 SPC_INIT 0 139 #define SPC_IDLE 1 140 #define SPC_SELECTING 2 /* SCSI command is arbiting */ 141 #define SPC_RESELECTED 3 /* Has been reselected */ 142 #define SPC_CONNECTED 4 /* Actively using the SCSI bus */ 143 #define SPC_DISCONNECT 5 /* MSG_DISCONNECT received */ 144 #define SPC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */ 145 #define SPC_CLEANING 7 146 u_char sc_flags; 147 #define SPC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */ 148 #define SPC_ABORTING 0x02 /* Bailing out */ 149 #define SPC_DOINGDMA 0x04 /* doing DMA */ 150 #define SPC_INACTIVE 0x80 /* The FIFO data path is active! */ 151 u_char sc_selid; /* Reselection ID */ 152 153 /* Message stuff */ 154 u_char sc_msgpriq; /* Messages we want to send */ 155 u_char sc_msgoutq; /* Messages sent during last MESSAGE OUT */ 156 u_char sc_lastmsg; /* Message last transmitted */ 157 u_char sc_currmsg; /* Message currently ready to transmit */ 158 #define SEND_DEV_RESET 0x01 159 #define SEND_PARITY_ERROR 0x02 160 #define SEND_INIT_DET_ERR 0x04 161 #define SEND_REJECT 0x08 162 #define SEND_IDENTIFY 0x10 163 #define SEND_ABORT 0x20 164 #define SEND_SDTR 0x40 165 #define SEND_WDTR 0x80 166 #define SPC_MAX_MSG_LEN 8 167 u_char sc_omess[SPC_MAX_MSG_LEN]; 168 u_char *sc_omp; /* Outgoing message pointer */ 169 u_char sc_imess[SPC_MAX_MSG_LEN]; 170 u_char *sc_imp; /* Incoming message pointer */ 171 172 /* Hardware stuff */ 173 int sc_initiator; /* Our scsi id */ 174 int sc_freq; /* Clock frequency in MHz */ 175 int sc_minsync; /* Minimum sync period / 4 */ 176 int sc_maxsync; /* Maximum sync period / 4 */ 177 178 /* DMA function set from MD code */ 179 void (*sc_dma_start)(struct spc_softc *, void *, size_t, int); 180 void (*sc_dma_done)(struct spc_softc *); 181 }; 182 183 #if SPC_DEBUG 184 #define SPC_SHOWACBS 0x01 185 #define SPC_SHOWINTS 0x02 186 #define SPC_SHOWCMDS 0x04 187 #define SPC_SHOWMISC 0x08 188 #define SPC_SHOWTRACE 0x10 189 #define SPC_SHOWSTART 0x20 190 #define SPC_DOBREAK 0x40 191 extern int spc_debug; /* SPC_SHOWSTART|SPC_SHOWMISC|SPC_SHOWTRACE; */ 192 #define SPC_PRINT(b, s) do {if ((spc_debug & (b)) != 0) printf s;} while (0) 193 #define SPC_BREAK() do {if ((spc_debug & SPC_DOBREAK) != 0) db_enter();} while (0) 194 #define SPC_ASSERT(x) do {if (x) {} else {printf("%s at line %d: assertion failed\n", sc->sc_dev.dv_xname, __LINE__); db_enter();}} while (0) 195 #else 196 #define SPC_PRINT(b, s) 197 #define SPC_BREAK() 198 #define SPC_ASSERT(x) 199 #endif 200 201 #define SPC_ACBS(s) SPC_PRINT(SPC_SHOWACBS, s) 202 #define SPC_INTS(s) SPC_PRINT(SPC_SHOWINTS, s) 203 #define SPC_CMDS(s) SPC_PRINT(SPC_SHOWCMDS, s) 204 #define SPC_MISC(s) SPC_PRINT(SPC_SHOWMISC, s) 205 #define SPC_TRACE(s) SPC_PRINT(SPC_SHOWTRACE, s) 206 #define SPC_START(s) SPC_PRINT(SPC_SHOWSTART, s) 207 208 void spc_attach(struct spc_softc *, struct scsi_adapter *); 209 int spc_intr(void *); 210 int spc_find(bus_space_tag_t, bus_space_handle_t, int); 211 void spc_init(struct spc_softc *); 212 void spc_sched(struct spc_softc *); 213 void spc_scsi_cmd(struct scsi_xfer *); 214 void spc_minphys(struct buf *); 215 #endif /* _MB89352VAR_H_ */ 216