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freebsd/sys/dev/ppbus/ppb_msq.h
Nicolas Souchu 0f210c922b Port of ppbus standalone framework to the newbus system. 
Note1: the correct interrupt level is invoked correctly for each driver.
       For this purpose, drivers request the bus before being able to
       call BUS_SETUP_INTR and BUS_TEARDOWN_INTR call is forced by the ppbus
       core when drivers release it. Thus, when BUS_SETUP_INTR is called
       at ppbus driver level, ppbus checks that the caller owns the
       bus and stores the interrupt handler cookie (in order to unregister
       it later).

       Printing is impossible while plip link is up is still TRUE.
       vpo (ZIP driver) and lpt are make in such a way that
       using the ZIP and printing concurrently is permitted is also TRUE.

Note2: specific chipset detection is not done by default. PPC_PROBE_CHIPSET
       is now needed to force chipset detection. If set, the flags 0x40
       still avoid detection at boot.

Port of the pcf(4) driver to the newbus system (was previously directly
connected to the rootbus and attached by a bogus pcf_isa_probe function).
2000-01-14 00:18:06 +00:00

206 lines
7.1 KiB
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/*-
* 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.
*
* $FreeBSD$
*
*/
#ifndef __PPB_MSQ_H
#define __PPB_MSQ_H
/*
* Basic definitions
*/
/* 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 ppb_MS_GET_init(bus,dev,body) ppb_MS_init(bus, dev, body, MS_OP_GET)
#define ppb_MS_PUT_init(bus,dev,body) ppb_MS_init(bus, dev, body, MS_OP_PUT)
extern int ppb_MS_init(
device_t, /* ppbus bus */
device_t, /* ppbus device */
struct ppb_microseq *, /* loop msq to assign */
int opcode /* MS_OP_GET, MS_OP_PUT */
);
extern int ppb_MS_init_msq(
struct ppb_microseq *,
int, /* number of parameters */
... /* descriptor, value, ... */
);
extern int ppb_MS_exec(
device_t, /* ppbus bus */
device_t, /* ppbus device */
int, /* microseq opcode */
union ppb_insarg, /* param1 */
union ppb_insarg, /* param2 */
union ppb_insarg, /* param3 */
int * /* returned value */
);
extern int ppb_MS_loop(
device_t, /* ppbus bus */
device_t, /* ppbus device */
struct ppb_microseq *, /* prologue msq of loop */
struct ppb_microseq *, /* body msq of loop */
struct ppb_microseq *, /* epilogue msq of loop */
int, /* number of iter */
int * /* returned value */
);
extern int ppb_MS_microseq(
device_t, /* ppbus bus */
device_t, /* ppbus device */
struct ppb_microseq *, /* msq to execute */
int * /* returned value */
);
#endif
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