1 /* $NetBSD: ppbus_msq.h,v 1.7 2008/04/15 15:02:29 cegger Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 Nicolas Souchu 5 * 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * FreeBSD: src/sys/dev/ppbus/ppb_msq.h,v 1.8 2000/01/14 00:17:55 nsouch Exp 29 * 30 */ 31 #ifndef __PPBUS_MSQ_H 32 #define __PPBUS_MSQ_H 33 34 35 /* 36 * Basic definitions 37 */ 38 39 /* Microsequence stuff. */ 40 #define PPBUS_MS_MAXLEN 64 /* XXX according to MS_INS_MASK */ 41 #define PPBUS_MS_MAXARGS 3 /* according to MS_ARG_MASK */ 42 43 /* Maximum number of mode dependent submicrosequences for in/out operations. */ 44 #define PPBUS_MAX_XFER 6 45 46 /* Argument in microsequence structure */ 47 union ppbus_insarg { 48 int i; 49 void *p; 50 char *c; 51 int (* f)(void *, char *); 52 }; 53 54 /* Microsequence structure */ 55 struct ppbus_microseq { 56 int opcode; /* microins. opcode */ 57 union ppbus_insarg arg[PPBUS_MS_MAXARGS]; /* arguments */ 58 }; 59 60 /* Microseqences used for GET/PUT operations */ 61 struct ppbus_xfer { 62 struct ppbus_microseq *loop; /* the loop microsequence */ 63 }; 64 65 /* microsequence parameter descriptor */ 66 #define MS_INS_MASK 0x00ff /* mask to retrieve the instruction position < 256 XXX */ 67 #define MS_ARG_MASK 0x0f00 /* mask to retrieve the argument number */ 68 #define MS_TYP_MASK 0xf000 /* mask to retrieve the type of the param */ 69 70 /* offset of each mask (see above) */ 71 #define MS_INS_OFFSET 0 72 #define MS_ARG_OFFSET 8 73 #define MS_TYP_OFFSET 12 74 75 /* list of parameter types */ 76 #define MS_TYP_INT 0x0 /* integer */ 77 #define MS_TYP_CHA 0x1 /* character */ 78 #define MS_TYP_PTR 0x2 /* void pointer */ 79 #define MS_TYP_FUN 0x3 /* function pointer */ 80 81 #define MS_PARAM(ins,arg,typ) \ 82 (((ins<<MS_INS_OFFSET) & MS_INS_MASK) | \ 83 ((arg<<MS_ARG_OFFSET) & MS_ARG_MASK) | \ 84 ((typ<<MS_TYP_OFFSET) & MS_TYP_MASK)) 85 86 #define MS_INS(param) ((param & MS_INS_MASK) >> MS_INS_OFFSET) 87 #define MS_ARG(param) ((param & MS_ARG_MASK) >> MS_ARG_OFFSET) 88 #define MS_TYP(param) ((param & MS_TYP_MASK) >> MS_TYP_OFFSET) 89 90 /* microsequence opcodes - do not change! */ 91 #define MS_OP_GET 0 /* get <ptr>, <len> */ 92 #define MS_OP_PUT 1 /* put <ptr>, <len> */ 93 94 #define MS_OP_RFETCH 2 /* rfetch <reg>, <mask>, <ptr> */ 95 #define MS_OP_RSET 3 /* rset <reg>, <mask>, <mask> */ 96 #define MS_OP_RASSERT 4 /* rassert <reg>, <mask> */ 97 #define MS_OP_DELAY 5 /* delay <val> */ 98 #define MS_OP_SET 6 /* set <val> */ 99 #define MS_OP_DBRA 7 /* dbra <offset> */ 100 #define MS_OP_BRSET 8 /* brset <mask>, <offset> */ 101 #define MS_OP_BRCLEAR 9 /* brclear <mask>, <offset> */ 102 #define MS_OP_RET 10 /* ret <retcode> */ 103 #define MS_OP_C_CALL 11 /* c_call <function>, <parameter> */ 104 #define MS_OP_PTR 12 /* ptr <pointer> */ 105 #define MS_OP_ADELAY 13 /* adelay <val> */ 106 #define MS_OP_BRSTAT 14 /* brstat <mask>, <mask>, <offset> */ 107 #define MS_OP_SUBRET 15 /* subret <code> */ 108 #define MS_OP_CALL 16 /* call <microsequence> */ 109 #define MS_OP_RASSERT_P 17 /* rassert_p <iter>, <reg> */ 110 #define MS_OP_RFETCH_P 18 /* rfetch_p <iter>, <reg>, <mask> */ 111 #define MS_OP_TRIG 19 /* trigger <reg>, <len>, <array> */ 112 113 /* common masks */ 114 #define MS_CLEAR_ALL 0x0 115 #define MS_ASSERT_NONE 0x0 116 #define MS_ASSERT_ALL 0xff 117 #define MS_FETCH_ALL 0xff 118 119 /* undefined parameter value */ 120 #define MS_NULL 0 121 #define MS_UNKNOWN MS_NULL 122 123 /* predifined parameters */ 124 #define MS_ACCUM -1 /* use accum previously set by MS_OP_SET */ 125 126 /* these are register numbers according to our PC-like parallel port model */ 127 #define MS_REG_DTR 0x0 128 #define MS_REG_STR 0x1 129 #define MS_REG_CTR 0x2 130 #define MS_REG_EPP_A 0x3 131 #define MS_REG_EPP_D 0x4 132 133 /* 134 * Microsequence macro abstraction level 135 */ 136 137 /* register operations */ 138 #define MS_RSET(reg,assert,clear) { MS_OP_RSET, {{ reg }, { assert }, { clear }}} 139 #define MS_RASSERT(reg,byte) { MS_OP_RASSERT, { { reg }, { byte }}} 140 #define MS_RCLR(reg,clear) { MS_OP_RSET, {{ reg }, { MS_ASSERT_NONE }, { clear }}} 141 142 #define MS_RFETCH(reg,mask,ptr) { MS_OP_RFETCH, {{ reg }, { mask }, { ptr }}} 143 144 /* trigger the port with array[char, delay,...] */ 145 #define MS_TRIG(reg,len,array) { MS_OP_TRIG, {{ reg }, { len }, { array }}} 146 147 /* assert/fetch from/to ptr */ 148 #define MS_RASSERT_P(n,reg) { MS_OP_RASSERT_P, {{ n }, { reg }}} 149 #define MS_RFETCH_P(n,reg,mask) { MS_OP_RFETCH_P, {{ n }, { reg }, { mask }}} 150 151 /* ptr manipulation */ 152 #define MS_PTR(ptr) { MS_OP_PTR, {{ ptr }}} 153 154 #define MS_DASS(byte) MS_RASSERT(MS_REG_DTR,byte) 155 #define MS_SASS(byte) MS_RASSERT(MS_REG_STR,byte) 156 #define MS_CASS(byte) MS_RASSERT(MS_REG_CTR,byte) 157 158 #define MS_SET(accum) { MS_OP_SET, {{ accum }}} 159 #define MS_BRSET(mask,offset) { MS_OP_BRSET, {{ mask }, { offset }}} 160 #define MS_DBRA(offset) { MS_OP_DBRA, {{ offset }}} 161 #define MS_BRCLEAR(mask,offset) { MS_OP_BRCLEAR, {{ mask }, { offset }}} 162 #define MS_BRSTAT(mask_set,mask_clr,offset) \ 163 { MS_OP_BRSTAT, {{ mask_set }, { mask_clr }, { offset }}} 164 165 /* C function or submicrosequence call */ 166 #define MS_C_CALL(function,parameter) \ 167 { MS_OP_C_CALL, {{ function }, { parameter }}} 168 #define MS_CALL(microseq) { MS_OP_CALL, {{ microseq }}} 169 170 /* mode dependent read/write operations 171 * ppb_MS_xxx_init() call required otherwise default is 172 * IEEE1284 operating mode */ 173 #define MS_PUT(ptr,len) { MS_OP_PUT, {{ ptr }, { len }}} 174 #define MS_GET(ptr,len) { MS_OP_GET, {{ ptr }, { len }}} 175 176 /* delay in microseconds */ 177 #define MS_DELAY(udelay) { MS_OP_DELAY, {{ udelay }}} 178 179 /* asynchroneous delay in ms */ 180 #define MS_ADELAY(mdelay) { MS_OP_ADELAY, {{ mdelay }}} 181 182 /* return from submicrosequence execution or microseqence execution */ 183 #define MS_SUBRET(code) { MS_OP_SUBRET, {{ code }}} 184 #define MS_RET(code) { MS_OP_RET, {{ code }}} 185 186 /* 187 * Function abstraction level 188 */ 189 190 #define ppbus_MS_GET_init(bus,dev,body) ppbus_MS_init(bus, dev, body, MS_OP_GET) 191 192 #define ppbus_MS_PUT_init(bus,dev,body) ppbus_MS_init(bus, dev, body, MS_OP_PUT) 193 194 /* Function prototypes */ 195 int ppbus_MS_init( 196 device_t, /* ppbus bus */ 197 device_t, /* ppbus device */ 198 struct ppbus_microseq *, /* loop msq to assign */ 199 int opcode /* MS_OP_GET, MS_OP_PUT */ 200 ); 201 202 int ppbus_MS_init_msq( 203 struct ppbus_microseq *, 204 int, /* number of parameters */ 205 ... /* descriptor, value, ... */ 206 ); 207 208 int ppbus_MS_exec( 209 device_t, /* ppbus bus */ 210 device_t, /* ppbus device */ 211 int, /* microseq opcode */ 212 union ppbus_insarg, /* param1 */ 213 union ppbus_insarg, /* param2 */ 214 union ppbus_insarg, /* param3 */ 215 int * /* returned value */ 216 ); 217 218 int ppbus_MS_loop( 219 device_t, /* ppbus bus */ 220 device_t, /* ppbus device */ 221 struct ppbus_microseq *, /* prologue msq of loop */ 222 struct ppbus_microseq *, /* body msq of loop */ 223 struct ppbus_microseq *, /* epilogue msq of loop */ 224 int, /* number of iter */ 225 int * /* returned value */ 226 ); 227 228 int ppbus_MS_microseq( 229 device_t, /* ppbus bus */ 230 device_t, /* ppbus device */ 231 struct ppbus_microseq *, /* msq to execute */ 232 int * /* returned value */ 233 ); 234 235 #endif /* __PPBUS_MSQ_H */ 236