drivers/scsi/aic7xxx_old/sequencer.h

   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
  40 struct 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
  50 struct 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
  60 struct 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)
  69 struct 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
  79 struct 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
  89 struct ins_format3 {
  90         unsigned int
  91                         parity          : 1,
  92                         opcode          : 4,
  93                         address         : 10,
  94                         source          : 9,
  95                         immediate       : 8;
  96 };
  97 #endif
  98
  99 union 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 };
 106 struct 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