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dhwk
[raggedstone] / heartbeat / source / top_raggedstone.vhd
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1--+-------------------------------------------------------------------------------------------------+\r
2--| |\r
3--| File: top.vhd |\r
4--| |\r
5--| Components: pci32lite.vhd |\r
6--| pciwbsequ.vhd |\r
7--| pcidmux.vhd |\r
8--| pciregs.vhd |\r
9--| pcipargen.vhd |\r
10--| -- Libs -- |\r
11--| ona.vhd |\r
12--| |\r
13--| Description: RS1 PCI Demo : (TOP) Main file. |\r
14--| |\r
15--| |\r
16--| |\r
17--+-------------------------------------------------------------------------------------------------+\r
18--| |\r
19--| Revision history : |\r
20--| Date Version Author Description |\r
21--| |\r
22--| |\r
23--| To do: |\r
24--| |\r
25--+-------------------------------------------------------------------------------------------------+\r
26\r
27\r
28--+-----------------------------------------------------------------------------+\r
29--| LIBRARIES |\r
30--+-----------------------------------------------------------------------------+\r
31\r
32library ieee;\r
33use ieee.std_logic_1164.all;\r
34use ieee.std_logic_arith.all;\r
35use ieee.std_logic_unsigned.all;\r
36\r
37--+-----------------------------------------------------------------------------+\r
38--| ENTITY |\r
39--+-----------------------------------------------------------------------------+\r
40\r
41entity raggedstone is\r
42port (\r
43\r
44 -- General \r
45 PCI_CLK : in std_logic;\r
46 PCI_nRES : in std_logic;\r
47 \r
48 -- PCI target 32bits\r
49 PCI_AD : inout std_logic_vector(31 downto 0);\r
50 PCI_CBE : in std_logic_vector(3 downto 0);\r
51 PCI_PAR : out std_logic; \r
52 PCI_nFRAME : in std_logic;\r
53 PCI_nIRDY : in std_logic;\r
54 PCI_nTRDY : out std_logic;\r
55 PCI_nDEVSEL : out std_logic;\r
56 PCI_nSTOP : out std_logic;\r
57 PCI_IDSEL : in std_logic;\r
58 PCI_nPERR : out std_logic;\r
59 PCI_nSERR : out std_logic;\r
60 PCI_nINT : out std_logic;\r
61 \r
62 -- debug signals\r
63 LED3 : out std_logic;\r
64 LED2 : out std_logic;\r
65 LED4 : out std_logic;\r
66 LED5 : out std_logic\r
67\r
68);\r
69end raggedstone;\r
70\r
71\r
72--+-----------------------------------------------------------------------------+\r
73--| ARCHITECTURE |\r
74--+-----------------------------------------------------------------------------+\r
75\r
76architecture raggedstone_arch of raggedstone is\r
77\r
78\r
79--+-----------------------------------------------------------------------------+\r
80--| COMPONENTS |\r
81--+-----------------------------------------------------------------------------+\r
82\r
83component pci32tlite\r
84port (\r
85\r
86 -- General \r
87 clk33 : in std_logic;\r
88 nrst : in std_logic;\r
89 \r
90 -- PCI target 32bits\r
91 ad : inout std_logic_vector(31 downto 0);\r
92 cbe : in std_logic_vector(3 downto 0);\r
93 par : out std_logic; \r
94 frame : in std_logic;\r
95 irdy : in std_logic;\r
96 trdy : out std_logic;\r
97 devsel : out std_logic;\r
98 stop : out std_logic;\r
99 idsel : in std_logic;\r
100 perr : out std_logic;\r
101 serr : out std_logic;\r
102 intb : out std_logic;\r
103 \r
104 -- Master whisbone\r
105 wb_adr_o : out std_logic_vector(24 downto 1); \r
106 wb_dat_i : in std_logic_vector(15 downto 0);\r
107 wb_dat_o : out std_logic_vector(15 downto 0);\r
108 wb_sel_o : out std_logic_vector(1 downto 0);\r
109 wb_we_o : out std_logic;\r
110 wb_stb_o : out std_logic;\r
111 wb_cyc_o : out std_logic;\r
112 wb_ack_i : in std_logic;\r
113 wb_err_i : in std_logic;\r
114 wb_int_i : in std_logic;\r
115\r
116 -- debug signals\r
117 debug_init : out std_logic;\r
118 debug_access : out std_logic \r
119\r
120 );\r
121end component;\r
122\r
123component heartbeat\r
124port (\r
125 clk_i : in std_logic;\r
126 nrst_i : in std_logic;\r
127 led2_o : out std_logic;\r
128 led3_o : out std_logic;\r
129 led4_o : out std_logic;\r
130 led5_o : out std_logic\r
131);\r
132end component;\r
133\r
134\r
135--+-----------------------------------------------------------------------------+\r
136--| CONSTANTS |\r
137--+-----------------------------------------------------------------------------+\r
138--+-----------------------------------------------------------------------------+\r
139--| SIGNALS |\r
140--+-----------------------------------------------------------------------------+\r
141\r
142 signal wb_adr : std_logic_vector(24 downto 1); \r
143 signal wb_dat_out : std_logic_vector(15 downto 0);\r
144 signal wb_dat_in : std_logic_vector(15 downto 0);\r
145 signal wb_sel : std_logic_vector(1 downto 0);\r
146 signal wb_we : std_logic;\r
147 signal wb_stb : std_logic;\r
148 signal wb_cyc : std_logic;\r
149 signal wb_ack : std_logic;\r
150 signal wb_err : std_logic;\r
151 signal wb_int : std_logic;\r
152\r
153\r
154begin\r
155\r
156--+-----------------------------------------+\r
157--| PCI Target |\r
158--+-----------------------------------------+\r
159\r
160u_pci: component pci32tlite\r
161port map(\r
162 clk33 => PCI_CLK,\r
163 nrst => PCI_nRES,\r
164 ad => PCI_AD,\r
165 cbe => PCI_CBE,\r
166 par => PCI_PAR,\r
167 frame => PCI_nFRAME,\r
168 irdy => PCI_nIRDY,\r
169 trdy => PCI_nTRDY,\r
170 devsel => PCI_nDEVSEL,\r
171 stop => PCI_nSTOP,\r
172 idsel => PCI_IDSEL,\r
173 perr => PCI_nPERR,\r
174 serr => PCI_nSERR,\r
175 intb => PCI_nINT,\r
176 wb_adr_o => wb_adr, \r
177 wb_dat_i => wb_dat_out,\r
178 wb_dat_o => wb_dat_in,\r
179 wb_sel_o => wb_sel, \r
180 wb_we_o => wb_we,\r
181 wb_stb_o => wb_stb, \r
182 wb_cyc_o => wb_cyc,\r
183 wb_ack_i => wb_ack,\r
184 wb_err_i => wb_err,\r
185 wb_int_i => wb_int\r
186-- debug_init => LED3,\r
187-- debug_access => LED2\r
188 );\r
189\r
190--+-----------------------------------------+\r
191--| WB-7seg |\r
192--+-----------------------------------------+\r
193\r
194my_heartbeat: component heartbeat\r
195port map( \r
196 clk_i => PCI_CLK,\r
197 nrst_i => PCI_nRES,\r
198 led2_o => LED2,\r
199 led3_o => LED3,\r
200 led4_o => LED4,\r
201 led5_o => LED5\r
202);\r
203\r
204end raggedstone_arch;\r
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