FreeBSD/Linux Kernel Cross Reference
sys/dev/ppbus/ppbus_msq.h

     /* $NetBSD: ppbus_msq.h,v 1.4 2004/01/28 17:11:48 jdolecek 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(
                   struct device *,                /* ppbus bus */
                   struct device *,        /* 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(
                   struct device *,                /* ppbus bus */
                   struct device *,        /* ppbus device */
                   int,                            /* microseq opcode */
                   union ppbus_insarg,             /* param1 */
                   union ppbus_insarg,             /* param2 */
                   union ppbus_insarg,             /* param3 */
                   int *                           /* returned value */
                   );
   
   int ppbus_MS_loop(
                   struct device *,                /* ppbus bus */
                   struct device *,        /* 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(
                   struct device *,                /* ppbus bus */
                   struct device *,        /* ppbus device */
                   struct ppbus_microseq *,        /* msq to execute */
                   int *                           /* returned value */
                   );
   
   #endif /* __PPBUS_MSQ_H */

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