204 lines
7.2 KiB
C
204 lines
7.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 1998 Nicolas Souchu
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#ifndef __PPB_MSQ_H
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#define __PPB_MSQ_H
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/*
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* Basic definitions
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*/
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/* microsequence parameter descriptor */
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#define MS_INS_MASK 0x00ff /* mask to retrieve the instruction position < 256 XXX */
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#define MS_ARG_MASK 0x0f00 /* mask to retrieve the argument number */
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#define MS_TYP_MASK 0xf000 /* mask to retrieve the type of the param */
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/* offset of each mask (see above) */
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#define MS_INS_OFFSET 0
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#define MS_ARG_OFFSET 8
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#define MS_TYP_OFFSET 12
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/* list of parameter types */
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#define MS_TYP_INT 0x0 /* integer */
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#define MS_TYP_CHA 0x1 /* character */
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#define MS_TYP_PTR 0x2 /* void pointer */
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#define MS_TYP_FUN 0x3 /* function pointer */
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#define MS_PARAM(ins,arg,typ) \
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(((ins<<MS_INS_OFFSET) & MS_INS_MASK) | \
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((arg<<MS_ARG_OFFSET) & MS_ARG_MASK) | \
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((typ<<MS_TYP_OFFSET) & MS_TYP_MASK))
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#define MS_INS(param) ((param & MS_INS_MASK) >> MS_INS_OFFSET)
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#define MS_ARG(param) ((param & MS_ARG_MASK) >> MS_ARG_OFFSET)
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#define MS_TYP(param) ((param & MS_TYP_MASK) >> MS_TYP_OFFSET)
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/* microsequence opcodes - do not change! */
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#define MS_OP_GET 0 /* get <ptr>, <len> */
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#define MS_OP_PUT 1 /* put <ptr>, <len> */
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#define MS_OP_RFETCH 2 /* rfetch <reg>, <mask>, <ptr> */
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#define MS_OP_RSET 3 /* rset <reg>, <mask>, <mask> */
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#define MS_OP_RASSERT 4 /* rassert <reg>, <mask> */
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#define MS_OP_DELAY 5 /* delay <val> */
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#define MS_OP_SET 6 /* set <val> */
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#define MS_OP_DBRA 7 /* dbra <offset> */
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#define MS_OP_BRSET 8 /* brset <mask>, <offset> */
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#define MS_OP_BRCLEAR 9 /* brclear <mask>, <offset> */
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#define MS_OP_RET 10 /* ret <retcode> */
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#define MS_OP_C_CALL 11 /* c_call <function>, <parameter> */
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#define MS_OP_PTR 12 /* ptr <pointer> */
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#define MS_OP_ADELAY 13 /* adelay <val> */
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#define MS_OP_BRSTAT 14 /* brstat <mask>, <mask>, <offset> */
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#define MS_OP_SUBRET 15 /* subret <code> */
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#define MS_OP_CALL 16 /* call <microsequence> */
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#define MS_OP_RASSERT_P 17 /* rassert_p <iter>, <reg> */
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#define MS_OP_RFETCH_P 18 /* rfetch_p <iter>, <reg>, <mask> */
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#define MS_OP_TRIG 19 /* trigger <reg>, <len>, <array> */
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/* common masks */
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#define MS_CLEAR_ALL 0x0
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#define MS_ASSERT_NONE 0x0
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#define MS_ASSERT_ALL 0xff
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#define MS_FETCH_ALL 0xff
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/* undefined parameter value */
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#define MS_NULL 0
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#define MS_UNKNOWN MS_NULL
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/* predifined parameters */
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#define MS_ACCUM -1 /* use accum previously set by MS_OP_SET */
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/* these are register numbers according to our PC-like parallel port model */
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#define MS_REG_DTR 0x0
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#define MS_REG_STR 0x1
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#define MS_REG_CTR 0x2
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#define MS_REG_EPP_A 0x3
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#define MS_REG_EPP_D 0x4
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/*
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* Microsequence macro abstraction level
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*/
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/* register operations */
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#define MS_RSET(reg,assert,clear) { MS_OP_RSET, {{ (reg) }, { (assert) }, { (clear) }}}
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#define MS_RASSERT(reg,byte) { MS_OP_RASSERT, { { (reg) }, { (byte) }}}
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#define MS_RCLR(reg,clear) { MS_OP_RSET, {{ (reg) }, { MS_ASSERT_NONE }, { (clear) }}}
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#define MS_RFETCH(reg,mask,ptr) { MS_OP_RFETCH, {{ (reg) }, { (mask) }, { (ptr) }}}
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/* trigger the port with array[char, delay,...] */
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#define MS_TRIG(reg,len,array) { MS_OP_TRIG, {{ (reg) }, { (len) }, { (array) }}}
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/* assert/fetch from/to ptr */
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#define MS_RASSERT_P(n,reg) { MS_OP_RASSERT_P, {{ (n) }, { (reg) }}}
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#define MS_RFETCH_P(n,reg,mask) { MS_OP_RFETCH_P, {{ (n) }, { (reg) }, { (mask) }}}
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/* ptr manipulation */
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#define MS_PTR(ptr) { MS_OP_PTR, {{ (ptr) }}}
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#define MS_DASS(byte) MS_RASSERT(MS_REG_DTR,byte)
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#define MS_SASS(byte) MS_RASSERT(MS_REG_STR,byte)
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#define MS_CASS(byte) MS_RASSERT(MS_REG_CTR,byte)
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#define MS_SET(accum) { MS_OP_SET, {{ (accum) }}}
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#define MS_BRSET(mask,offset) { MS_OP_BRSET, {{ (mask) }, { (offset) }}}
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#define MS_DBRA(offset) { MS_OP_DBRA, {{ (offset) }}}
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#define MS_BRCLEAR(mask,offset) { MS_OP_BRCLEAR, {{ (mask) }, { (offset) }}}
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#define MS_BRSTAT(mask_set,mask_clr,offset) \
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{ MS_OP_BRSTAT, {{ mask_set }, { mask_clr }, { (offset) }}}
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/* C function or submicrosequence call */
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#define MS_C_CALL(function,parameter) \
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{ MS_OP_C_CALL, {{ (function) }, { (parameter) }}}
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#define MS_CALL(microseq) { MS_OP_CALL, {{ (microseq) }}}
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/* mode dependent read/write operations
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* ppb_MS_xxx_init() call required otherwise default is
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* IEEE1284 operating mode */
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#define MS_PUT(ptr,len) { MS_OP_PUT, {{ (ptr) }, { (len) }}}
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#define MS_GET(ptr,len) { MS_OP_GET, {{ (ptr) }, { (len) }}}
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/* delay in microseconds */
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#define MS_DELAY(udelay) { MS_OP_DELAY, {{ (udelay) }}}
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/* asynchroneous delay in ms */
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#define MS_ADELAY(mdelay) { MS_OP_ADELAY, {{ (mdelay) }}}
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/* return from submicrosequence execution or microseqence execution */
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#define MS_SUBRET(code) { MS_OP_SUBRET, {{ (code) }}}
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#define MS_RET(code) { MS_OP_RET, {{ (code) }}}
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/*
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* Function abstraction level
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*/
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#define ppb_MS_GET_init(bus,dev,body) ppb_MS_init(bus, dev, body, MS_OP_GET)
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#define ppb_MS_PUT_init(bus,dev,body) ppb_MS_init(bus, dev, body, MS_OP_PUT)
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extern int ppb_MS_init(
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device_t, /* ppbus bus */
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device_t, /* ppbus device */
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struct ppb_microseq *, /* loop msq to assign */
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int opcode /* MS_OP_GET, MS_OP_PUT */
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);
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extern int ppb_MS_init_msq(
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struct ppb_microseq *,
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int, /* number of parameters */
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... /* descriptor, value, ... */
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);
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extern int ppb_MS_exec(
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device_t, /* ppbus bus */
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device_t, /* ppbus device */
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int, /* microseq opcode */
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union ppb_insarg, /* param1 */
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union ppb_insarg, /* param2 */
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union ppb_insarg, /* param3 */
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int * /* returned value */
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);
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extern int ppb_MS_loop(
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device_t, /* ppbus bus */
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device_t, /* ppbus device */
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struct ppb_microseq *, /* prologue msq of loop */
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struct ppb_microseq *, /* body msq of loop */
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struct ppb_microseq *, /* epilogue msq of loop */
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int, /* number of iter */
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int * /* returned value */
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);
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extern int ppb_MS_microseq(
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device_t, /* ppbus bus */
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device_t, /* ppbus device */
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struct ppb_microseq *, /* msq to execute */
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int * /* returned value */
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);
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#endif
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