otsdaq_prepmodernization  v2_05_02_indev
Ethernet_RAM_tb_pkg.vhd
1 
2 --------------------------------------------------------------------------------
3 --
4 -- DIST MEM GEN Core - Testbench Package
5 --
6 --------------------------------------------------------------------------------
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53 
54 --------------------------------------------------------------------------------
55 --
56 -- Filename: Ethernet_RAM_tb_pkg.vhd
57 --
58 -- Description:
59 -- DMG Testbench Package files
60 --
61 --------------------------------------------------------------------------------
62 -- Author: IP Solutions Division
63 --
64 -- History: Sep 12, 2011 - First Release
65 --------------------------------------------------------------------------------
66 --
67 --------------------------------------------------------------------------------
68 -- Library Declarations
69 --------------------------------------------------------------------------------
70 
71 
72 LIBRARY IEEE;
73 USE IEEE.STD_LOGIC_1164.ALL;
74 USE IEEE.STD_LOGIC_ARITH.ALL;
75 USE IEEE.STD_LOGIC_UNSIGNED.ALL;
76 
77 PACKAGE Ethernet_RAM_TB_PKG IS
78 
79  FUNCTION DIVROUNDUP (
80  DATA_VALUE : INTEGER;
81  DIVISOR : INTEGER)
82  RETURN INTEGER;
83  ------------------------
84  FUNCTION IF_THEN_ELSE (
85  CONDITION : BOOLEAN;
86  TRUE_CASE : STD_LOGIC_VECTOR;
87  FALSE_CASE : STD_LOGIC_VECTOR)
88  RETURN STD_LOGIC_VECTOR;
89  ------------------------
90  FUNCTION IF_THEN_ELSE (
91  CONDITION : BOOLEAN;
92  TRUE_CASE : STRING;
93  FALSE_CASE :STRING)
94  RETURN STRING;
95  ------------------------
96  FUNCTION IF_THEN_ELSE (
97  CONDITION : BOOLEAN;
98  TRUE_CASE : STD_LOGIC;
99  FALSE_CASE :STD_LOGIC)
100  RETURN STD_LOGIC;
101  ------------------------
102  FUNCTION IF_THEN_ELSE (
103  CONDITION : BOOLEAN;
104  TRUE_CASE : INTEGER;
105  FALSE_CASE : INTEGER)
106  RETURN INTEGER;
107  ------------------------
108  FUNCTION LOG2ROUNDUP (
109  DATA_VALUE : INTEGER)
110  RETURN INTEGER;
111 
112 END Ethernet_RAM_TB_PKG;
113 
114 PACKAGE BODY _Ethernet_RAM_TB_PKG IS
115 
116  FUNCTION DIVROUNDUP (
117  DATA_VALUE : INTEGER;
118  DIVISOR : INTEGER)
119  RETURN INTEGER IS
120  VARIABLE DIV : INTEGER;
121  BEGIN
122  DIV := DATA_VALUE/DIVISOR;
123  IF ( (DATA_VALUE MOD DIVISOR) /= 0) THEN
124  DIV := DIV+1;
125  END IF;
126  RETURN DIV;
127  END DIVROUNDUP;
128  ---------------------------------
129  FUNCTION IF_THEN_ELSE (
130  CONDITION : BOOLEAN;
131  TRUE_CASE : STD_LOGIC_VECTOR;
132  FALSE_CASE : STD_LOGIC_VECTOR)
133  RETURN STD_LOGIC_VECTOR IS
134  BEGIN
135  IF NOT CONDITION THEN
136  RETURN FALSE_CASE;
137  ELSE
138  RETURN TRUE_CASE;
139  END IF;
140  END IF_THEN_ELSE;
141  ---------------------------------
142  FUNCTION IF_THEN_ELSE (
143  CONDITION : BOOLEAN;
144  TRUE_CASE : STD_LOGIC;
145  FALSE_CASE : STD_LOGIC)
146  RETURN STD_LOGIC IS
147  BEGIN
148  IF NOT CONDITION THEN
149  RETURN FALSE_CASE;
150  ELSE
151  RETURN TRUE_CASE;
152  END IF;
153  END IF_THEN_ELSE;
154  ---------------------------------
155  FUNCTION IF_THEN_ELSE (
156  CONDITION : BOOLEAN;
157  TRUE_CASE : INTEGER;
158  FALSE_CASE : INTEGER)
159  RETURN INTEGER IS
160  VARIABLE RETVAL : INTEGER := 0;
161  BEGIN
162  IF CONDITION=FALSE THEN
163  RETVAL:=FALSE_CASE;
164  ELSE
165  RETVAL:=TRUE_CASE;
166  END IF;
167  RETURN RETVAL;
168  END IF_THEN_ELSE;
169  ---------------------------------
170  FUNCTION IF_THEN_ELSE (
171  CONDITION : BOOLEAN;
172  TRUE_CASE : STRING;
173  FALSE_CASE : STRING)
174  RETURN STRING IS
175  BEGIN
176  IF NOT CONDITION THEN
177  RETURN FALSE_CASE;
178  ELSE
179  RETURN TRUE_CASE;
180  END IF;
181  END IF_THEN_ELSE;
182  -------------------------------
183  FUNCTION LOG2ROUNDUP (
184  DATA_VALUE : INTEGER)
185  RETURN INTEGER IS
186  VARIABLE WIDTH : INTEGER := 0;
187  VARIABLE CNT : INTEGER := 1;
188  BEGIN
189  IF (DATA_VALUE <= 1) THEN
190  WIDTH := 1;
191  ELSE
192  WHILE (CNT < DATA_VALUE) LOOP
193  WIDTH := WIDTH + 1;
194  CNT := CNT *2;
195  END LOOP;
196  END IF;
197  RETURN WIDTH;
198  END LOG2ROUNDUP;
199 
200 END Ethernet_RAM_TB_PKG;