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NetBSD/sys/dev/ppbus/ppbus_msq.h

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/* $NetBSD: ppbus_msq.h,v 1.7 2008/04/15 15:02:29 cegger Exp $ */
/*-
* Copyright (c) 1998 Nicolas Souchu
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* FreeBSD: src/sys/dev/ppbus/ppb_msq.h,v 1.8 2000/01/14 00:17:55 nsouch Exp
*
*/
#ifndef __PPBUS_MSQ_H
#define __PPBUS_MSQ_H
/*
* Basic definitions
*/
/* Microsequence stuff. */
#define PPBUS_MS_MAXLEN 64 /* XXX according to MS_INS_MASK */
#define PPBUS_MS_MAXARGS 3 /* according to MS_ARG_MASK */
/* Maximum number of mode dependent submicrosequences for in/out operations. */
#define PPBUS_MAX_XFER 6
/* Argument in microsequence structure */
union ppbus_insarg {
int i;
void *p;
char *c;
int (* f)(void *, char *);
};
/* Microsequence structure */
struct ppbus_microseq {
int opcode; /* microins. opcode */
union ppbus_insarg arg[PPBUS_MS_MAXARGS]; /* arguments */
};
/* Microseqences used for GET/PUT operations */
struct ppbus_xfer {
struct ppbus_microseq *loop; /* the loop microsequence */
};
/* microsequence parameter descriptor */
#define MS_INS_MASK 0x00ff /* mask to retrieve the instruction position < 256 XXX */
#define MS_ARG_MASK 0x0f00 /* mask to retrieve the argument number */
#define MS_TYP_MASK 0xf000 /* mask to retrieve the type of the param */
/* offset of each mask (see above) */
#define MS_INS_OFFSET 0
#define MS_ARG_OFFSET 8
#define MS_TYP_OFFSET 12
/* list of parameter types */
#define MS_TYP_INT 0x0 /* integer */
#define MS_TYP_CHA 0x1 /* character */
#define MS_TYP_PTR 0x2 /* void pointer */
#define MS_TYP_FUN 0x3 /* function pointer */
#define MS_PARAM(ins,arg,typ) \
(((ins<<MS_INS_OFFSET) & MS_INS_MASK) | \
((arg<<MS_ARG_OFFSET) & MS_ARG_MASK) | \
((typ<<MS_TYP_OFFSET) & MS_TYP_MASK))
#define MS_INS(param) ((param & MS_INS_MASK) >> MS_INS_OFFSET)
#define MS_ARG(param) ((param & MS_ARG_MASK) >> MS_ARG_OFFSET)
#define MS_TYP(param) ((param & MS_TYP_MASK) >> MS_TYP_OFFSET)
/* microsequence opcodes - do not change! */
#define MS_OP_GET 0 /* get <ptr>, <len> */
#define MS_OP_PUT 1 /* put <ptr>, <len> */
#define MS_OP_RFETCH 2 /* rfetch <reg>, <mask>, <ptr> */
#define MS_OP_RSET 3 /* rset <reg>, <mask>, <mask> */
#define MS_OP_RASSERT 4 /* rassert <reg>, <mask> */
#define MS_OP_DELAY 5 /* delay <val> */
#define MS_OP_SET 6 /* set <val> */
#define MS_OP_DBRA 7 /* dbra <offset> */
#define MS_OP_BRSET 8 /* brset <mask>, <offset> */
#define MS_OP_BRCLEAR 9 /* brclear <mask>, <offset> */
#define MS_OP_RET 10 /* ret <retcode> */
#define MS_OP_C_CALL 11 /* c_call <function>, <parameter> */
#define MS_OP_PTR 12 /* ptr <pointer> */
#define MS_OP_ADELAY 13 /* adelay <val> */
#define MS_OP_BRSTAT 14 /* brstat <mask>, <mask>, <offset> */
#define MS_OP_SUBRET 15 /* subret <code> */
#define MS_OP_CALL 16 /* call <microsequence> */
#define MS_OP_RASSERT_P 17 /* rassert_p <iter>, <reg> */
#define MS_OP_RFETCH_P 18 /* rfetch_p <iter>, <reg>, <mask> */
#define MS_OP_TRIG 19 /* trigger <reg>, <len>, <array> */
/* common masks */
#define MS_CLEAR_ALL 0x0
#define MS_ASSERT_NONE 0x0
#define MS_ASSERT_ALL 0xff
#define MS_FETCH_ALL 0xff
/* undefined parameter value */
#define MS_NULL 0
#define MS_UNKNOWN MS_NULL
/* predifined parameters */
#define MS_ACCUM -1 /* use accum previously set by MS_OP_SET */
/* these are register numbers according to our PC-like parallel port model */
#define MS_REG_DTR 0x0
#define MS_REG_STR 0x1
#define MS_REG_CTR 0x2
#define MS_REG_EPP_A 0x3
#define MS_REG_EPP_D 0x4
/*
* Microsequence macro abstraction level
*/
/* register operations */
#define MS_RSET(reg,assert,clear) { MS_OP_RSET, {{ reg }, { assert }, { clear }}}
#define MS_RASSERT(reg,byte) { MS_OP_RASSERT, { { reg }, { byte }}}
#define MS_RCLR(reg,clear) { MS_OP_RSET, {{ reg }, { MS_ASSERT_NONE }, { clear }}}
#define MS_RFETCH(reg,mask,ptr) { MS_OP_RFETCH, {{ reg }, { mask }, { ptr }}}
/* trigger the port with array[char, delay,...] */
#define MS_TRIG(reg,len,array) { MS_OP_TRIG, {{ reg }, { len }, { array }}}
/* assert/fetch from/to ptr */
#define MS_RASSERT_P(n,reg) { MS_OP_RASSERT_P, {{ n }, { reg }}}
#define MS_RFETCH_P(n,reg,mask) { MS_OP_RFETCH_P, {{ n }, { reg }, { mask }}}
/* ptr manipulation */
#define MS_PTR(ptr) { MS_OP_PTR, {{ ptr }}}
#define MS_DASS(byte) MS_RASSERT(MS_REG_DTR,byte)
#define MS_SASS(byte) MS_RASSERT(MS_REG_STR,byte)
#define MS_CASS(byte) MS_RASSERT(MS_REG_CTR,byte)
#define MS_SET(accum) { MS_OP_SET, {{ accum }}}
#define MS_BRSET(mask,offset) { MS_OP_BRSET, {{ mask }, { offset }}}
#define MS_DBRA(offset) { MS_OP_DBRA, {{ offset }}}
#define MS_BRCLEAR(mask,offset) { MS_OP_BRCLEAR, {{ mask }, { offset }}}
#define MS_BRSTAT(mask_set,mask_clr,offset) \
{ MS_OP_BRSTAT, {{ mask_set }, { mask_clr }, { offset }}}
/* C function or submicrosequence call */
#define MS_C_CALL(function,parameter) \
{ MS_OP_C_CALL, {{ function }, { parameter }}}
#define MS_CALL(microseq) { MS_OP_CALL, {{ microseq }}}
/* mode dependent read/write operations
* ppb_MS_xxx_init() call required otherwise default is
* IEEE1284 operating mode */
#define MS_PUT(ptr,len) { MS_OP_PUT, {{ ptr }, { len }}}
#define MS_GET(ptr,len) { MS_OP_GET, {{ ptr }, { len }}}
/* delay in microseconds */
#define MS_DELAY(udelay) { MS_OP_DELAY, {{ udelay }}}
/* asynchroneous delay in ms */
#define MS_ADELAY(mdelay) { MS_OP_ADELAY, {{ mdelay }}}
/* return from submicrosequence execution or microseqence execution */
#define MS_SUBRET(code) { MS_OP_SUBRET, {{ code }}}
#define MS_RET(code) { MS_OP_RET, {{ code }}}
/*
* Function abstraction level
*/
#define ppbus_MS_GET_init(bus,dev,body) ppbus_MS_init(bus, dev, body, MS_OP_GET)
#define ppbus_MS_PUT_init(bus,dev,body) ppbus_MS_init(bus, dev, body, MS_OP_PUT)
/* Function prototypes */
int ppbus_MS_init(
device_t, /* ppbus bus */
device_t, /* ppbus device */
struct ppbus_microseq *, /* loop msq to assign */
int opcode /* MS_OP_GET, MS_OP_PUT */
);
int ppbus_MS_init_msq(
struct ppbus_microseq *,
int, /* number of parameters */
... /* descriptor, value, ... */
);
int ppbus_MS_exec(
device_t, /* ppbus bus */
device_t, /* ppbus device */
int, /* microseq opcode */
union ppbus_insarg, /* param1 */
union ppbus_insarg, /* param2 */
union ppbus_insarg, /* param3 */
int * /* returned value */
);
int ppbus_MS_loop(
device_t, /* ppbus bus */
device_t, /* ppbus device */
struct ppbus_microseq *, /* prologue msq of loop */
struct ppbus_microseq *, /* body msq of loop */
struct ppbus_microseq *, /* epilogue msq of loop */
int, /* number of iter */
int * /* returned value */
);
int ppbus_MS_microseq(
device_t, /* ppbus bus */
device_t, /* ppbus device */
struct ppbus_microseq *, /* msq to execute */
int * /* returned value */
);
#endif /* __PPBUS_MSQ_H */
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