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SCHEDULER5_5.VHD @ 101

Last change on this file since 101 was 101, checked in by rolagamo, 10 years ago

File size: 17.3 KB

Line
1	---------------------------------------------------------------------------------
2	-- Company:
3	-- Engineer: KIEGAING EMMANUEL GEL EN 5
4	--
5	-- Create Date: 03:56:34 05/06/2011
6	-- Design Name:
7	-- Module Name: Sheduler - Behavioral
8	-- Project Name:
9	-- Target Devices:
10	-- Tool versions:
11	-- Description: Module de l'ordonnanceur du switch crossbar
12	-- l'algorithme utilisée est le DPA (diagonal propagation arbiter)
13	--
14	-- Dependencies:
15	--
16	-- Revision:
17	-- Revision 0.01 - File Created
18	-- Additional Comments:
19	--
20	----------------------------------------------------------------------------------
21	library IEEE;
22	use IEEE.STD_LOGIC_1164.ALL;
23	use IEEE.STD_LOGIC_ARITH.ALL;
24	use IEEE.STD_LOGIC_UNSIGNED.ALL;
25	--use Work.Sheduler_package.all;
26
27	---- Uncomment the following library declaration if instantiating
28	---- any Xilinx primitives in this code.
29	--library UNISIM;
30	--use UNISIM.VComponents.all;
31	entity Scheduler5_5 is
32	Port ( Request : in STD_LOGIC_VECTOR (25 downto 1);
33	Fifo_full : in STD_LOGIC_VECTOR (5 downto 1);
34	clk : in STD_LOGIC;
35	reset : in STD_LOGIC;
36	priority_rotation : in STD_LOGIC_VECTOR (5 downto 1);
37	port_grant : out STD_LOGIC_VECTOR (25 downto 1));
38	end Scheduler5_5;
39
40	architecture Behavioral of Scheduler5_5 is
41	--Declaration du types
42	--tableau de signaux de connexion des cellules arbitres
43	TYPE C_Bar_Signal_Array IS ARRAY(9 downto 1) of STD_LOGIC_VECTOR(5 downto 1);
44	-- declaration du composant cellule d'arbitrage
45	Component Arbiter
46	PORT (P, Fifo_full,Request, West,North : in STD_LOGIC;
47	Grant,East,South : out STD_LOGIC );
48	End Component;--Signaux de connexion des cellues
49	SIGNAL south_2_north : C_Bar_Signal_Array; -- connexion south north
50	SIGNAL east_2_west : C_Bar_Signal_Array; -- connexion east west
51	SIGNAL Signal_mask : C_Bar_Signal_Array;-- connexion des masques de priorité
52	SIGNAL Signal_grant : C_Bar_Signal_Array;-- connexion des signaux de validation
53	SIGNAL Signal_priority : STD_LOGIC_VECTOR (9 DOWNTO 1);--signal pour la connection des vecteur de priorité
54	SIGNAL High : std_logic;--niveau pour les cellules des extremités nord et ouest
55	signal grant_latch : std_logic_vector(25 downto 1);
56	signal priority_rotation_en : std_logic;
57	signal Grant ,req_grant: std_logic_vector(25 downto 1);
58	begin
59
60	--validation de la rotation de priorité lorsque aucun port n'emet
61	req_grant<=(request and grant_latch);
62	priority_rotation_en <= '1' when unsigned(req_grant) = 0 or unsigned(priority_rotation) = 31 else '0';
63	--latch servant qui memorise le signal grant pendant a transmission
64	grant_latch_process : process(clk)
65	begin
66	if rising_edge(clk) then
67	if reset = '1' then
68	grant_latch <= (others => '0');
69	elsif priority_rotation_en = '1' then
70	grant_latch <= Grant;
71	end if;
72	end if;
73	end process;
74	port_grant <= grant_latch;
75	Grant(1) <= Signal_grant(1)(1) or Signal_grant(6)(1); -- Grant(1,1)
76	Grant(2) <= Signal_grant(2)(2) or Signal_grant(7)(2); -- Grant(1,2)
77	Grant(3) <= Signal_grant(3)(3) or Signal_grant(8)(3); -- Grant(1,3)
78	Grant(4) <= Signal_grant(4)(4) or Signal_grant(9)(4); -- Grant(1,4)
79	Grant(5) <= Signal_grant(5)(5) ; -- Grant(1,5)
80	Grant(6) <= Signal_grant(2)(1) or Signal_grant(7)(1); -- Grant(2,1)
81	Grant(7) <= Signal_grant(3)(2) or Signal_grant(8)(2); -- Grant(2,2)
82	Grant(8) <= Signal_grant(4)(3) or Signal_grant(9)(3); -- Grant(2,3)
83	Grant(9) <= Signal_grant(5)(4) ; -- Grant(2,4)
84	Grant(10) <= Signal_grant(1)(5) or Signal_grant(6)(5); -- Grant(2,5)
85	Grant(11) <= Signal_grant(3)(1) or Signal_grant(8)(1); -- Grant(3,1)
86	Grant(12) <= Signal_grant(4)(2) or Signal_grant(9)(2); -- Grant(3,2)
87	Grant(13) <= Signal_grant(5)(3) ; -- Grant(3,3)
88	Grant(14) <= Signal_grant(1)(4) or Signal_grant(6)(4); -- Grant(3,4)
89	Grant(15) <= Signal_grant(2)(5) or Signal_grant(7)(5); -- Grant(3,5)
90	Grant(16) <= Signal_grant(4)(1) or Signal_grant(9)(1); -- Grant(4,1)
91	Grant(17) <= Signal_grant(5)(2) ; -- Grant(4,2)
92	Grant(18) <= Signal_grant(1)(3) or Signal_grant(6)(3); -- Grant(4,3)
93	Grant(19) <= Signal_grant(2)(4) or Signal_grant(7)(4); -- Grant(4,4)
94	Grant(20) <= Signal_grant(3)(5) or Signal_grant(8)(5); -- Grant(4,5)
95	Grant(21) <= Signal_grant(5)(1) ; -- Grant(5,1)
96	Grant(22) <= Signal_grant(1)(2) or Signal_grant(6)(2); -- Grant(5,2)
97	Grant(23) <= Signal_grant(2)(3) or Signal_grant(7)(3); -- Grant(5,3)
98	Grant(24) <= Signal_grant(3)(4) or Signal_grant(8)(4); -- Grant(5,4)
99	Grant(25) <= Signal_grant(4)(5) or Signal_grant(9)(5); -- Grant(5,5)
100	High <= '1';
101
102	----instantiations des cellules arbitres et interconnection
103
104	-------------------------- Diagonale n° 1
105
106
107	Arbiter_1_1 : Arbiter
108
109	PORT MAP (Request => Request(1), North => High, West => High, P => Signal_priority(9), Fifo_full => Fifo_full(1),
110	South => south_2_north(1)(1), East => east_2_west(1)(1) , Grant => Signal_grant(1)(1));
111
112	Arbiter_1_2 : Arbiter
113
114	PORT MAP (Request => Request(22), North => High, West => High, P => Signal_priority(9), Fifo_full => Fifo_full(2),
115	South => south_2_north(1)(2), East => east_2_west(1)(2) , Grant => Signal_grant(1)(2));
116
117	Arbiter_1_3 : Arbiter
118
119	PORT MAP (Request => Request(18), North => High, West => High, P => Signal_priority(9), Fifo_full => Fifo_full(3),
120	South => south_2_north(1)(3), East => east_2_west(1)(3) , Grant => Signal_grant(1)(3));
121
122	Arbiter_1_4 : Arbiter
123
124	PORT MAP (Request => Request(14), North => High, West => High, P => Signal_priority(9), Fifo_full => Fifo_full(4),
125	South => south_2_north(1)(4), East => east_2_west(1)(4) , Grant => Signal_grant(1)(4));
126
127	Arbiter_1_5 : Arbiter
128
129	PORT MAP (Request => Request(10), North => High, West => High, P => Signal_priority(9), Fifo_full => Fifo_full(5),
130	South => south_2_north(1)(5), East => east_2_west(1)(5) , Grant => Signal_grant(1)(5));
131
132	-------------------------- Diagonale n° 2
133
134
135	Arbiter_2_1 : Arbiter
136
137	PORT MAP (Request => Request(6), North => south_2_north(1)(1), West => east_2_west(1)(5), P => Signal_priority(8), Fifo_full => Fifo_full(1),
138	South => south_2_north(2)(1), East => east_2_west(2)(1) , Grant => Signal_grant(2)(1));
139
140	Arbiter_2_2 : Arbiter
141
142	PORT MAP (Request => Request(2), North => south_2_north(1)(2), West => east_2_west(1)(1), P => Signal_priority(8), Fifo_full => Fifo_full(2),
143	South => south_2_north(2)(2), East => east_2_west(2)(2) , Grant => Signal_grant(2)(2));
144
145	Arbiter_2_3 : Arbiter
146
147	PORT MAP (Request => Request(23), North => south_2_north(1)(3), West => east_2_west(1)(2), P => Signal_priority(8), Fifo_full => Fifo_full(3),
148	South => south_2_north(2)(3), East => east_2_west(2)(3) , Grant => Signal_grant(2)(3));
149
150	Arbiter_2_4 : Arbiter
151
152	PORT MAP (Request => Request(19), North => south_2_north(1)(4), West => east_2_west(1)(3), P => Signal_priority(8), Fifo_full => Fifo_full(4),
153	South => south_2_north(2)(4), East => east_2_west(2)(4) , Grant => Signal_grant(2)(4));
154
155	Arbiter_2_5 : Arbiter
156
157	PORT MAP (Request => Request(15), North => south_2_north(1)(5), West => east_2_west(1)(4), P => Signal_priority(8), Fifo_full => Fifo_full(5),
158	South => south_2_north(2)(5), East => east_2_west(2)(5) , Grant => Signal_grant(2)(5));
159
160	-------------------------- Diagonale n° 3
161
162
163	Arbiter_3_1 : Arbiter
164
165	PORT MAP (Request => Request(11), North => south_2_north(2)(1), West => east_2_west(2)(5), P => Signal_priority(7), Fifo_full => Fifo_full(1),
166	South => south_2_north(3)(1), East => east_2_west(3)(1) , Grant => Signal_grant(3)(1));
167
168	Arbiter_3_2 : Arbiter
169
170	PORT MAP (Request => Request(7), North => south_2_north(2)(2), West => east_2_west(2)(1), P => Signal_priority(7), Fifo_full => Fifo_full(2),
171	South => south_2_north(3)(2), East => east_2_west(3)(2) , Grant => Signal_grant(3)(2));
172
173	Arbiter_3_3 : Arbiter
174
175	PORT MAP (Request => Request(3), North => south_2_north(2)(3), West => east_2_west(2)(2), P => Signal_priority(7), Fifo_full => Fifo_full(3),
176	South => south_2_north(3)(3), East => east_2_west(3)(3) , Grant => Signal_grant(3)(3));
177
178	Arbiter_3_4 : Arbiter
179
180	PORT MAP (Request => Request(24), North => south_2_north(2)(4), West => east_2_west(2)(3), P => Signal_priority(7), Fifo_full => Fifo_full(4),
181	South => south_2_north(3)(4), East => east_2_west(3)(4) , Grant => Signal_grant(3)(4));
182
183	Arbiter_3_5 : Arbiter
184
185	PORT MAP (Request => Request(20), North => south_2_north(2)(5), West => east_2_west(2)(4), P => Signal_priority(7), Fifo_full => Fifo_full(5),
186	South => south_2_north(3)(5), East => east_2_west(3)(5) , Grant => Signal_grant(3)(5));
187
188	-------------------------- Diagonale n° 4
189
190
191	Arbiter_4_1 : Arbiter
192
193	PORT MAP (Request => Request(16), North => south_2_north(3)(1), West => east_2_west(3)(5), P => Signal_priority(6), Fifo_full => Fifo_full(1),
194	South => south_2_north(4)(1), East => east_2_west(4)(1) , Grant => Signal_grant(4)(1));
195
196	Arbiter_4_2 : Arbiter
197
198	PORT MAP (Request => Request(12), North => south_2_north(3)(2), West => east_2_west(3)(1), P => Signal_priority(6), Fifo_full => Fifo_full(2),
199	South => south_2_north(4)(2), East => east_2_west(4)(2) , Grant => Signal_grant(4)(2));
200
201	Arbiter_4_3 : Arbiter
202
203	PORT MAP (Request => Request(8), North => south_2_north(3)(3), West => east_2_west(3)(2), P => Signal_priority(6), Fifo_full => Fifo_full(3),
204	South => south_2_north(4)(3), East => east_2_west(4)(3) , Grant => Signal_grant(4)(3));
205
206	Arbiter_4_4 : Arbiter
207
208	PORT MAP (Request => Request(4), North => south_2_north(3)(4), West => east_2_west(3)(3), P => Signal_priority(6), Fifo_full => Fifo_full(4),
209	South => south_2_north(4)(4), East => east_2_west(4)(4) , Grant => Signal_grant(4)(4));
210
211	Arbiter_4_5 : Arbiter
212
213	PORT MAP (Request => Request(25), North => south_2_north(3)(5), West => east_2_west(3)(4), P => Signal_priority(6), Fifo_full => Fifo_full(5),
214	South => south_2_north(4)(5), East => east_2_west(4)(5) , Grant => Signal_grant(4)(5));
215
216	-------------------------- Diagonale n° 5
217
218
219	Arbiter_5_1 : Arbiter
220
221	PORT MAP (Request => Request(21), North => south_2_north(4)(1), West => east_2_west(4)(5), P => Signal_priority(5), Fifo_full => Fifo_full(1),
222	South => south_2_north(5)(1), East => east_2_west(5)(1) , Grant => Signal_grant(5)(1));
223
224	Arbiter_5_2 : Arbiter
225
226	PORT MAP (Request => Request(17), North => south_2_north(4)(2), West => east_2_west(4)(1), P => Signal_priority(5), Fifo_full => Fifo_full(2),
227	South => south_2_north(5)(2), East => east_2_west(5)(2) , Grant => Signal_grant(5)(2));
228
229	Arbiter_5_3 : Arbiter
230
231	PORT MAP (Request => Request(13), North => south_2_north(4)(3), West => east_2_west(4)(2), P => Signal_priority(5), Fifo_full => Fifo_full(3),
232	South => south_2_north(5)(3), East => east_2_west(5)(3) , Grant => Signal_grant(5)(3));
233
234	Arbiter_5_4 : Arbiter
235
236	PORT MAP (Request => Request(9), North => south_2_north(4)(4), West => east_2_west(4)(3), P => Signal_priority(5), Fifo_full => Fifo_full(4),
237	South => south_2_north(5)(4), East => east_2_west(5)(4) , Grant => Signal_grant(5)(4));
238
239	Arbiter_5_5 : Arbiter
240
241	PORT MAP (Request => Request(5), North => south_2_north(4)(5), West => east_2_west(4)(4), P => Signal_priority(5), Fifo_full => Fifo_full(5),
242	South => south_2_north(5)(5), East => east_2_west(5)(5) , Grant => Signal_grant(5)(5));
243
244	-------------------------- Diagonale n° 6
245
246
247	Arbiter_6_1 : Arbiter
248
249	PORT MAP (Request => Request(1), North => south_2_north(5)(1), West => east_2_west(5)(5), P => Signal_priority(4), Fifo_full => Fifo_full(1),
250	South => south_2_north(6)(1), East => east_2_west(6)(1) , Grant => Signal_grant(6)(1));
251
252	Arbiter_6_2 : Arbiter
253
254	PORT MAP (Request => Request(22), North => south_2_north(5)(2), West => east_2_west(5)(1), P => Signal_priority(4), Fifo_full => Fifo_full(2),
255	South => south_2_north(6)(2), East => east_2_west(6)(2) , Grant => Signal_grant(6)(2));
256
257	Arbiter_6_3 : Arbiter
258
259	PORT MAP (Request => Request(18), North => south_2_north(5)(3), West => east_2_west(5)(2), P => Signal_priority(4), Fifo_full => Fifo_full(3),
260	South => south_2_north(6)(3), East => east_2_west(6)(3) , Grant => Signal_grant(6)(3));
261
262	Arbiter_6_4 : Arbiter
263
264	PORT MAP (Request => Request(14), North => south_2_north(5)(4), West => east_2_west(5)(3), P => Signal_priority(4), Fifo_full => Fifo_full(4),
265	South => south_2_north(6)(4), East => east_2_west(6)(4) , Grant => Signal_grant(6)(4));
266
267	Arbiter_6_5 : Arbiter
268
269	PORT MAP (Request => Request(10), North => south_2_north(5)(5), West => east_2_west(5)(4), P => Signal_priority(4), Fifo_full => Fifo_full(5),
270	South => south_2_north(6)(5), East => east_2_west(6)(5) , Grant => Signal_grant(6)(5));
271
272	-------------------------- Diagonale n° 7
273
274
275	Arbiter_7_1 : Arbiter
276
277	PORT MAP (Request => Request(6), North => south_2_north(6)(1), West => east_2_west(6)(5), P => Signal_priority(3), Fifo_full => Fifo_full(1),
278	South => south_2_north(7)(1), East => east_2_west(7)(1) , Grant => Signal_grant(7)(1));
279
280	Arbiter_7_2 : Arbiter
281
282	PORT MAP (Request => Request(2), North => south_2_north(6)(2), West => east_2_west(6)(1), P => Signal_priority(3), Fifo_full => Fifo_full(2),
283	South => south_2_north(7)(2), East => east_2_west(7)(2) , Grant => Signal_grant(7)(2));
284
285	Arbiter_7_3 : Arbiter
286
287	PORT MAP (Request => Request(23), North => south_2_north(6)(3), West => east_2_west(6)(2), P => Signal_priority(3), Fifo_full => Fifo_full(3),
288	South => south_2_north(7)(3), East => east_2_west(7)(3) , Grant => Signal_grant(7)(3));
289
290	Arbiter_7_4 : Arbiter
291
292	PORT MAP (Request => Request(19), North => south_2_north(6)(4), West => east_2_west(6)(3), P => Signal_priority(3), Fifo_full => Fifo_full(4),
293	South => south_2_north(7)(4), East => east_2_west(7)(4) , Grant => Signal_grant(7)(4));
294
295	Arbiter_7_5 : Arbiter
296
297	PORT MAP (Request => Request(15), North => south_2_north(6)(5), West => east_2_west(6)(4), P => Signal_priority(3), Fifo_full => Fifo_full(5),
298	South => south_2_north(7)(5), East => east_2_west(7)(5) , Grant => Signal_grant(7)(5));
299
300	-------------------------- Diagonale n° 8
301
302
303	Arbiter_8_1 : Arbiter
304
305	PORT MAP (Request => Request(11), North => south_2_north(7)(1), West => east_2_west(7)(5), P => Signal_priority(2), Fifo_full => Fifo_full(1),
306	South => south_2_north(8)(1), East => east_2_west(8)(1) , Grant => Signal_grant(8)(1));
307
308	Arbiter_8_2 : Arbiter
309
310	PORT MAP (Request => Request(7), North => south_2_north(7)(2), West => east_2_west(7)(1), P => Signal_priority(2), Fifo_full => Fifo_full(2),
311	South => south_2_north(8)(2), East => east_2_west(8)(2) , Grant => Signal_grant(8)(2));
312
313	Arbiter_8_3 : Arbiter
314
315	PORT MAP (Request => Request(3), North => south_2_north(7)(3), West => east_2_west(7)(2), P => Signal_priority(2), Fifo_full => Fifo_full(3),
316	South => south_2_north(8)(3), East => east_2_west(8)(3) , Grant => Signal_grant(8)(3));
317
318	Arbiter_8_4 : Arbiter
319
320	PORT MAP (Request => Request(24), North => south_2_north(7)(4), West => east_2_west(7)(3), P => Signal_priority(2), Fifo_full => Fifo_full(4),
321	South => south_2_north(8)(4), East => east_2_west(8)(4) , Grant => Signal_grant(8)(4));
322
323	Arbiter_8_5 : Arbiter
324
325	PORT MAP (Request => Request(20), North => south_2_north(7)(5), West => east_2_west(7)(4), P => Signal_priority(2), Fifo_full => Fifo_full(5),
326	South => south_2_north(8)(5), East => east_2_west(8)(5) , Grant => Signal_grant(8)(5));
327
328	-------------------------- Diagonale n° 9
329
330
331	Arbiter_9_1 : Arbiter
332
333	PORT MAP (Request => Request(16), North => south_2_north(8)(1), West => east_2_west(8)(5), P => Signal_priority(1), Fifo_full => Fifo_full(1),
334	South => south_2_north(9)(1), East => east_2_west(9)(1) , Grant => Signal_grant(9)(1));
335
336	Arbiter_9_2 : Arbiter
337
338	PORT MAP (Request => Request(12), North => south_2_north(8)(2), West => east_2_west(8)(1), P => Signal_priority(1), Fifo_full => Fifo_full(2),
339	South => south_2_north(9)(2), East => east_2_west(9)(2) , Grant => Signal_grant(9)(2));
340
341	Arbiter_9_3 : Arbiter
342
343	PORT MAP (Request => Request(8), North => south_2_north(8)(3), West => east_2_west(8)(2), P => Signal_priority(1), Fifo_full => Fifo_full(3),
344	South => south_2_north(9)(3), East => east_2_west(9)(3) , Grant => Signal_grant(9)(3));
345
346	Arbiter_9_4 : Arbiter
347
348	PORT MAP (Request => Request(4), North => south_2_north(8)(4), West => east_2_west(8)(3), P => Signal_priority(1), Fifo_full => Fifo_full(4),
349	South => south_2_north(9)(4), East => east_2_west(9)(4) , Grant => Signal_grant(9)(4));
350
351	Arbiter_9_5 : Arbiter
352
353	PORT MAP (Request => Request(25), North => south_2_north(8)(5), West => east_2_west(8)(4), P => Signal_priority(1), Fifo_full => Fifo_full(5),
354	South => south_2_north(9)(5), East => east_2_west(9)(5) , Grant => Signal_grant(9)(5));
355
356
357	--processus permettant de roter la priorité des diagonales à chaque front d'horloge
358	-- rotation round robin
359	round_robin : process(clk)
360	begin
361	if rising_edge(clk) then
362	if reset ='1' then
363	Signal_priority <= "111110000";
364	elsif priority_rotation_en = '1' then
365	case Signal_priority is
366	when "111110000" => Signal_priority <= "011111000";
367	when "011111000" => Signal_priority <= "001111100";
368	when "001111100" => Signal_priority <= "000111110";
369	when "000111110" => Signal_priority <= "000011111";
370	when "000011111" => Signal_priority <= "111110000";
371	when others => Signal_priority <= "111110000";
372	end case;
373	end if;
374	end if;
375	end process;
376
377	end Behavioral;
378

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