move address register
[raggedstone] / dhwk / source / config_04h.vhd
CommitLineData
377c0242 1-- J.STELZNER\r
2-- INFORMATIK-3 LABOR\r
3-- 23.08.2006\r
4-- File: CONFIG_04H.VHD\r
5\r
6library IEEE;\r
7use IEEE.std_logic_1164.all;\r
8\r
9entity CONFIG_04H is\r
10 port\r
11 (\r
12 PCI_CLOCK :in std_logic;\r
13 PCI_RSTn :in std_logic;\r
14 SERR :in std_logic;\r
15 PERR :in std_logic;\r
16 AD_REG :in std_logic_vector(31 downto 0);\r
17 CBE_REGn :in std_logic_vector( 3 downto 0);\r
18 CONF_WR_04H :in std_logic;\r
19 CONF_DATA_04H :out std_logic_vector(31 downto 0)\r
20 );\r
21end entity CONFIG_04H;\r
22\r
23architecture CONFIG_04H_DESIGN of CONFIG_04H is\r
24\r
25 signal CONF_STATUS :std_logic_vector(31 downto 16);\r
26 signal CONF_COMMAND :std_logic_vector(15 downto 0);\r
27\r
28\r
29begin\r
30\r
31--*******************************************************************\r
32--************* PCI Configuration Space Header "STATUS" *************\r
33--*******************************************************************\r
34\r
35 CONF_STATUS(20 downto 16) <= "00000" ;-- Reserved\r
36 CONF_STATUS(21 ) <= '0' ;-- MAS/TAR: "R_O" :'0'= 33MHz / '1'= 66MHz\r
37 CONF_STATUS(22 ) <= '0' ;-- MAS/TAR: "R_O" \r
38 CONF_STATUS(23 ) <= '0' ;-- ???/???: "R_O" : fast back-to-back\r
39 CONF_STATUS(24 ) <= '0' ;-- Master :\r
40--CONF_STATUS(26 downto 25) <= "00" ;-- Mas/Tar: "R_O" : timing fast for "DEVSEL"\r
41 CONF_STATUS(26 downto 25) <= "01" ;-- Mas/Tar: "R_O" : timing medium for "DEVSEL"\r
42--CONF_STATUS(26 downto 25) <= "10" ;-- Mas/Tar: "R_O" : timing slow for "DEVSEL"\r
43--CONF_STATUS(26 downto 25) <= "11" ;-- Mas/Tar: "R_O" : reserved\r
44 CONF_STATUS(27 ) <= '0' ;-- Target : "R_W" : Taget-Abort\r
45 CONF_STATUS(28 ) <= '0' ;-- Master : "R_W" : Taget-Abort\r
46 CONF_STATUS(29 ) <= '0' ;-- Master : "R_W" : Master-Abort\r
47--CONF_STATUS(30 ) <= SERR ;-- Mas/Tar: "R_W" : SERR\r
48--CONF_STATUS(31 ) <= PERR ;-- Mas/Tar: "R_W" : PERR\r
49\r
50 process (PCI_CLOCK,PCI_RSTn) \r
51 begin\r
52 if PCI_RSTn = '0' then CONF_STATUS(30) <= '0';\r
53 CONF_STATUS(31) <= '0';\r
54\r
55 elsif (PCI_CLOCK'event and PCI_CLOCK = '1') then\r
56\r
57 if CONF_WR_04H = '1' and CBE_REGn(3) = '0' then \r
58\r
59 CONF_STATUS(30) <= not (AD_REG(30) and CONF_STATUS(30)); \r
60 CONF_STATUS(31) <= not (AD_REG(31) and CONF_STATUS(31));\r
61\r
62 else CONF_STATUS(30) <= SERR or CONF_STATUS(30);\r
63 CONF_STATUS(31) <= PERR or CONF_STATUS(31);\r
64\r
65 end if; \r
66 end if; \r
67 end process;\r
68\r
69--*******************************************************************\r
70--*********** PCI Configuration Space Header "COMMAND" **************\r
71--*******************************************************************\r
72\r
73-- CONF_COMMAND( 0) <= '0';-- I/O Space accesses ???\r
74-- CONF_COMMAND( 1) <= '0';-- Mem Space accesses ???\r
75-- CONF_COMMAND( 2) <= '0';-- abillity to act as a master on the PCI bus \r
76-- CONF_COMMAND( 3) <= '0';-- Special Cycle ???\r
77-- CONF_COMMAND( 4) <= '0';-- Master ??? \r
78-- CONF_COMMAND( 5) <= '0';-- VGA ???\r
79-- CONF_COMMAND( 6) <= '0';-- Party checking enable/disable\r
80 CONF_COMMAND( 7) <= '0';-- address/data stepping ???\r
81-- CONF_COMMAND( 8) <= '0';-- enable/disable "PCI_SERRn"\r
82-- CONF_COMMAND( 9) <= '0';-- fast back-to-back\r
83-- CONF_COMMAND(10) <= '0';-- Reserved\r
84-- CONF_COMMAND(11) <= '0';-- Reserved\r
85-- CONF_COMMAND(12) <= '0';-- Reserved\r
86-- CONF_COMMAND(13) <= '0';-- Reserved\r
87-- CONF_COMMAND(14) <= '0';-- Reserved\r
88-- CONF_COMMAND(15) <= '0';-- Reserved\r
89\r
90 process (PCI_CLOCK,PCI_RSTn) \r
91 begin\r
92 if PCI_RSTn = '0' then CONF_COMMAND(15 downto 8) <= (others =>'0');\r
93 CONF_COMMAND( 6 downto 0) <= (others =>'0');\r
94\r
95 elsif (PCI_CLOCK'event and PCI_CLOCK = '1') then\r
96\r
97 if CONF_WR_04H = '1'and CBE_REGn(1) = '0' then \r
98\r
99 CONF_COMMAND(15 downto 8) <= AD_REG(15 downto 8);\r
100 else CONF_COMMAND(15 downto 8) <= CONF_COMMAND(15 downto 8);\r
101 end if;\r
102\r
103\r
104 if CONF_WR_04H = '1'and CBE_REGn(0) = '0' then \r
105\r
106 CONF_COMMAND( 6 downto 0) <= AD_REG( 6 downto 0);\r
107 else CONF_COMMAND( 6 downto 0) <= CONF_COMMAND( 6 downto 0);\r
108 end if;\r
109\r
110 end if;\r
111 end process;\r
112\r
113 CONF_DATA_04H <= CONF_STATUS & CONF_COMMAND; \r
114\r
115end architecture CONFIG_04H_DESIGN;\r
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