merge config space
[raggedstone] / dhwk / source / pci / config_3Ch.vhd
1 -- J.STELZNER
2 -- INFORMATIK-3 LABOR
3 -- 23.08.2006
4 -- File: CONFIG_3CH.VHD
5
6 library IEEE;
7 use IEEE.std_logic_1164.all;
8
9 entity CONFIG_3CH is
10 port (
11 PCI_CLOCK :in std_logic;
12 PCI_RSTn :in std_logic;
13 AD_REG :in std_logic_vector (31 downto 0);
14 CBE_REGn :in std_logic_vector ( 3 downto 0);
15 CONF_WR_3CH :in std_logic;
16 CONF_DATA_3CH :out std_logic_vector (31 downto 0)
17 );
18 end entity CONFIG_3CH;
19
20 architecture CONFIG_3CH_DESIGN of CONFIG_3CH is
21
22 -- PCI Configuration Space Header Addr : HEX 3C --
23
24 signal CONF_MAX_LAT :std_logic_vector (31 downto 24);
25 signal CONF_MIN_GNT :std_logic_vector (23 downto 16);
26 signal CONF_INT_PIN :std_logic_vector (15 downto 8);
27 signal CONF_INT_LINE :std_logic_vector ( 7 downto 0);
28
29 constant cmd_conf_write :std_logic_vector(3 downto 0) := "1011";
30 begin
31
32 --*******************************************************************
33 --*********** PCI Configuration Space Header "INTERRUPT" ************
34 --*******************************************************************
35
36 CONF_MAX_LAT <= X"00";
37 CONF_MIN_GNT <= X"00";
38 -- CONF_INT_PIN <= X"00"; -- Interrupt -
39 CONF_INT_PIN <= X"01"; -- Interrupt A
40 -- CONF_INT_PIN <= X"02"; -- Interrupt B
41 -- CONF_INT_PIN <= X"03"; -- Interrupt C
42 -- CONF_INT_PIN <= X"04"; -- Interrupt D
43 -- CONF_INT_PIN <= X"05 - FF0"; -- Reserviert
44
45 process (PCI_CLOCK,PCI_RSTn)
46 begin
47 if PCI_RSTn = '0' then
48 CONF_INT_LINE <= (others => '0');
49
50 elsif (rising_edge(PCI_CLOCK)) then
51 if CONF_WR_3CH = '1'and CBE_REGn(0) = '0' then
52 CONF_INT_LINE(7 downto 0) <= AD_REG(7 downto 0);
53 end if;
54 end if;
55 end process;
56
57 CONF_DATA_3CH <= CONF_MAX_LAT & CONF_MIN_GNT & CONF_INT_PIN & CONF_INT_LINE;
58
59 end architecture CONFIG_3CH_DESIGN;
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