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[raggedstone] / dhwk / source / pci / config_3Ch.vhd

diff --git a/dhwk/source/pci/config_3Ch.vhd b/dhwk/source/pci/config_3Ch.vhd
new file mode 100644 (file)
index 0000000..2c79f4f
--- /dev/null
+++ b/dhwk/source/pci/config_3Ch.vhd
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+-- J.STELZNER
+-- INFORMATIK-3 LABOR
+-- 23.08.2006
+-- File: CONFIG_3CH.VHD
+
+library IEEE;
+use IEEE.std_logic_1164.all;
+
+entity CONFIG_3CH is
+        port (
+                     PCI_CLOCK :in std_logic;
+                     PCI_RSTn :in std_logic;
+                     AD_REG :in std_logic_vector (31 downto 0);
+                     CBE_REGn :in std_logic_vector ( 3 downto 0);
+                     CONF_WR_3CH :in std_logic;
+                     CONF_DATA_3CH :out std_logic_vector (31 downto 0)
+             );
+end entity CONFIG_3CH;
+
+architecture CONFIG_3CH_DESIGN of CONFIG_3CH is
+
+ -- PCI Configuration Space Header Addr : HEX 3C --
+
+        signal CONF_MAX_LAT :std_logic_vector (31 downto 24);
+        signal CONF_MIN_GNT :std_logic_vector (23 downto 16);
+        signal CONF_INT_PIN :std_logic_vector (15 downto 8);
+        signal CONF_INT_LINE :std_logic_vector ( 7 downto 0);
+
+        constant cmd_conf_write :std_logic_vector(3 downto 0) := "1011";
+begin
+
+ --*******************************************************************
+ --*********** PCI Configuration Space Header "INTERRUPT" ************
+ --*******************************************************************
+
+        CONF_MAX_LAT <= X"00";
+        CONF_MIN_GNT <= X"00";
+        -- CONF_INT_PIN <= X"00"; -- Interrupt -
+        CONF_INT_PIN <= X"01"; -- Interrupt A
+        -- CONF_INT_PIN <= X"02"; -- Interrupt B
+        -- CONF_INT_PIN <= X"03"; -- Interrupt C
+        -- CONF_INT_PIN <= X"04"; -- Interrupt D
+        -- CONF_INT_PIN <= X"05 - FF0"; -- Reserviert
+
+        process (PCI_CLOCK,PCI_RSTn)
+        begin
+                if PCI_RSTn = '0' then
+                        CONF_INT_LINE <= (others => '0');
+
+                elsif (PCI_CLOCK'event and PCI_CLOCK = '1') then
+                        if CONF_WR_3CH = '1'and CBE_REGn(0) = '0' then
+                                CONF_INT_LINE(7 downto 0) <= AD_REG(7 downto 0);
+                        end if;
+                end if;
+        end process;
+
+        CONF_DATA_3CH <= CONF_MAX_LAT & CONF_MIN_GNT & CONF_INT_PIN & CONF_INT_LINE;
+
+end architecture CONFIG_3CH_DESIGN;