tgt-fpga/device.h

   1 #ifndef __device_H
   2 #define __device_H
   3 /*
   4  * Copyright (c) 2001-2003 Stephen Williams (steve@icarus.com)
   5  *
   6  *    This source code is free software; you can redistribute it
   7  *    and/or modify it in source code form under the terms of the GNU
   8  *    General Public License as published by the Free Software
   9  *    Foundation; either version 2 of the License, or (at your option)
  10  *    any later version.
  11  *
  12  *    This program is distributed in the hope that it will be useful,
  13  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *    GNU General Public License for more details.
  16  *
  17  *    You should have received a copy of the GNU General Public License
  18  *    along with this program; if not, write to the Free Software
  19  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  20  */
  21 #ifdef HAVE_CVS_IDENT
  22 #ident "$Id: device.h,v 1.15 2007/02/26 19:49:49 steve Exp $"
  23 #endif
  24
  25 # include  <ivl_target.h>
  26
  27 /*
  28  * This code generator supports a variety of device types. It does
  29  * this by keeping a device "driver" structure for each device
  30  * type. The device structure contains pointers to functions that emit
  31  * the proper XNF for a given type of device.
  32  *
  33  * If a device supports a method, the function pointer is filled in
  34  * with a pointer to the proper function.
  35  *
  36  * If a device does not support the method, then the pointer is null.
  37  */
  38 typedef const struct device_s* device_t;
  39
  40 struct device_s {
  41         /* These methods draw leading and trailing format text. */
  42       void (*show_header)(ivl_design_t des);
  43       void (*show_footer)(ivl_design_t des);
  44         /* Draw scopes marked by ivl_synthesis_cell */
  45       void (*show_cell_scope)(ivl_scope_t net);
  46         /* Draw pads connected to the specified signal. */
  47       void (*show_pad)(ivl_signal_t sig, const char*str);
  48         /* Draw basic logic devices. */
  49       void (*show_logic)(ivl_net_logic_t net);
  50         /* This method emits a D type Flip-Flop */
  51       void (*show_dff)(ivl_lpm_t net);
  52         /* These methods show various comparators */
  53       void (*show_cmp_eq)(ivl_lpm_t net);
  54       void (*show_cmp_ne)(ivl_lpm_t net);
  55       void (*show_cmp_ge)(ivl_lpm_t net);
  56       void (*show_cmp_gt)(ivl_lpm_t net);
  57         /* This method draws MUX devices */
  58       void (*show_mux)(ivl_lpm_t net);
  59         /* This method draws ADD devices */
  60       void (*show_add)(ivl_lpm_t net);
  61       void (*show_sub)(ivl_lpm_t net);
  62         /* These methods draw SHIFT devices */
  63       void (*show_shiftl)(ivl_lpm_t net);
  64       void (*show_shiftr)(ivl_lpm_t net);
  65         /* Multipliers */
  66       void (*show_mult)(ivl_lpm_t net);
  67         /* Constants */
  68       void (*show_constant)(ivl_net_const_t net);
  69 };
  70
  71 /*
  72  * Return the device_t cookie given the name of the architecture. If
  73  * the device is not found, return 0.
  74  *
  75  * This function is used if the user specifies the architecture
  76  * explicitly, with the -parch=name flag.
  77  */
  78 extern device_t device_from_arch(const char*arch);
  79
  80
  81 /*
  82  * $Log: device.h,v $
  83  * Revision 1.15  2007/02/26 19:49:49  steve
  84  *  Spelling fixes (larry doolittle)
  85  *
  86  * Revision 1.14  2003/11/12 03:20:14  steve
  87  *  devices need show_cmp_gt
  88  *
  89  * Revision 1.13  2003/10/27 02:18:27  steve
  90  *  Emit constants for LPM device.
  91  *
  92  * Revision 1.12  2003/08/09 03:23:03  steve
  93  *  Add support for IVL_LPM_MULT device.
  94  *
  95  * Revision 1.11  2003/06/24 03:55:00  steve
  96  *  Add ivl_synthesis_cell support for virtex2.
  97  *
  98  * Revision 1.10  2002/10/28 02:05:56  steve
  99  *  Add Virtex code generators for left shift,
 100  *  subtraction, and GE comparators.
 101  *
 102  * Revision 1.9  2002/08/12 01:35:02  steve
 103  *  conditional ident string using autoconfig.
 104  *
 105  * Revision 1.8  2002/08/11 23:47:04  steve
 106  *  Add missing Log and Ident strings.
 107  *
 108  * Revision 1.7  2001/09/16 01:48:16  steve
 109  *  Suppor the PAD attribute on signals.
 110  *
 111  * Revision 1.6  2001/09/02 21:33:07  steve
 112  *  Rearrange the XNF code generator to be generic-xnf
 113  *  so that non-XNF code generation is also possible.
 114  *
 115  *  Start into the virtex EDIF output driver.
 116  *
 117  * Revision 1.5  2001/09/01 04:30:44  steve
 118  *  Generic ADD code.
 119  *
 120  * Revision 1.4  2001/09/01 02:28:42  steve
 121  *  Generate code for MUX devices.
 122  *
 123  * Revision 1.3  2001/09/01 02:01:30  steve
 124  *  identity compare, and PWR records for constants.
 125  *
 126  * Revision 1.2  2001/08/31 02:59:06  steve
 127  *  Add root port SIG records.
 128  *
 129  * Revision 1.1  2001/08/28 04:14:20  steve
 130  *  Add the fpga target.
 131  *
 132  */
 133 #endif