linux/drivers/scsi/aic7xxx_old/sequencer.h
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   1/*
   2 * Instruction formats for the sequencer program downloaded to
   3 * Aic7xxx SCSI host adapters
   4 *
   5 * Copyright (c) 1997, 1998 Justin T. Gibbs.
   6 * All rights reserved.
   7 *
   8 * Redistribution and use in source and binary forms, with or without
   9 * modification, are permitted provided that the following conditions
  10 * are met:
  11 * 1. Redistributions of source code must retain the above copyright
  12 *    notice, this list of conditions, and the following disclaimer,
  13 *    without modification, immediately at the beginning of the file.
  14 * 2. The name of the author may not be used to endorse or promote products
  15 *    derived from this software without specific prior written permission.
  16 *
  17 * Where this Software is combined with software released under the terms of 
  18 * the GNU General Public License ("GPL") and the terms of the GPL would require the 
  19 * combined work to also be released under the terms of the GPL, the terms
  20 * and conditions of this License will apply in addition to those of the
  21 * GPL with the exception of any terms or conditions of this License that
  22 * conflict with, or are expressly prohibited by, the GPL.
  23 *
  24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  28 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34 * SUCH DAMAGE.
  35 *
  36 *      $Id: sequencer.h,v 1.3 1997/09/27 19:37:31 gibbs Exp $
  37 */
  38
  39#ifdef __LITTLE_ENDIAN_BITFIELD
  40struct ins_format1 {
  41        unsigned int
  42                        immediate       : 8,
  43                        source          : 9,
  44                        destination     : 9,
  45                        ret             : 1,
  46                        opcode          : 4,
  47                        parity          : 1;
  48};
  49
  50struct ins_format2 {
  51        unsigned int
  52                        shift_control   : 8,
  53                        source          : 9,
  54                        destination     : 9,
  55                        ret             : 1,
  56                        opcode          : 4,
  57                        parity          : 1;
  58};
  59
  60struct ins_format3 {
  61        unsigned int
  62                        immediate       : 8,
  63                        source          : 9,
  64                        address         : 10,
  65                        opcode          : 4,
  66                        parity          : 1;
  67};
  68#elif defined(__BIG_ENDIAN_BITFIELD)
  69struct ins_format1 {
  70        unsigned int
  71                        parity          : 1,
  72                        opcode          : 4,
  73                        ret             : 1,
  74                        destination     : 9,
  75                        source          : 9,
  76                        immediate       : 8;
  77};
  78
  79struct ins_format2 {
  80        unsigned int
  81                        parity          : 1,
  82                        opcode          : 4,
  83                        ret             : 1,
  84                        destination     : 9,
  85                        source          : 9,
  86                        shift_control   : 8;
  87};
  88
  89struct ins_format3 {
  90        unsigned int
  91                        parity          : 1,
  92                        opcode          : 4,
  93                        address         : 10,
  94                        source          : 9,
  95                        immediate       : 8;
  96};
  97#endif
  98
  99union ins_formats {
 100                struct ins_format1 format1;
 101                struct ins_format2 format2;
 102                struct ins_format3 format3;
 103                unsigned char      bytes[4];
 104                unsigned int       integer;
 105};
 106struct instruction {
 107        union   ins_formats format;
 108        unsigned int    srcline;
 109        struct symbol *patch_label;
 110  struct {
 111    struct instruction *stqe_next;
 112  } links;
 113};
 114
 115#define AIC_OP_OR       0x0
 116#define AIC_OP_AND      0x1
 117#define AIC_OP_XOR      0x2
 118#define AIC_OP_ADD      0x3
 119#define AIC_OP_ADC      0x4
 120#define AIC_OP_ROL      0x5
 121#define AIC_OP_BMOV     0x6
 122
 123#define AIC_OP_JMP      0x8
 124#define AIC_OP_JC       0x9
 125#define AIC_OP_JNC      0xa
 126#define AIC_OP_CALL     0xb
 127#define AIC_OP_JNE      0xc
 128#define AIC_OP_JNZ      0xd
 129#define AIC_OP_JE       0xe
 130#define AIC_OP_JZ       0xf
 131
 132/* Pseudo Ops */
 133#define AIC_OP_SHL      0x10
 134#define AIC_OP_SHR      0x20
 135#define AIC_OP_ROR      0x30
 136
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