even more consolidation

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

diff --git a/dhwk/source/pci/config_space_header.vhd b/dhwk/source/pci/config_space_header.vhd
index 722b931cac03ea21acff8726c08c235b105b4267..ca437c08b769237c7406b6166d39849ba95629dc 100644 (file)
--- a/dhwk/source/pci/config_space_header.vhd
+++ b/dhwk/source/pci/config_space_header.vhd
@@ -38,6 +38,9 @@ architecture SCHEMATIC of CONFIG_SPACE_HEADER is
 
         signal CONF_BAS_ADDR_REG :std_logic_vector(31 downto 0);
 
+        signal CONF_STATUS :std_logic_vector(31 downto 16);
+        signal CONF_COMMAND :std_logic_vector(15 downto 0);
+
         SIGNAL gnd : std_logic := '0';
         SIGNAL vcc : std_logic := '1';
 
@@ -66,22 +69,10 @@ architecture SCHEMATIC of CONFIG_SPACE_HEADER is
                        CONF_WR_3CH : Out std_logic );
         end component;
 
-        component CONFIG_04H
-                Port ( AD_REG : In std_logic_vector (31 downto 0);
-                       CBE_REGn : In std_logic_vector (3 downto 0);
-                       CONF_WR_04H : In std_logic;
-                       PCI_CLOCK : In std_logic;
-                       PCI_RSTn : In std_logic;
-                       PERR : In std_logic;
-                       SERR : In std_logic;
-                       CONF_DATA_04H : Out std_logic_vector (31 downto 0) );
-        end component;
-
 begin
         CONF_DATA_00H <= CONF_DEVICE_ID & VENDOR_ID;
         CONF_DATA_08H <= CONF_CLASS_CODE & REVISION_ID;
-
-        CONF_DATA_04H <= CONF_DATA_04H_DUMMY;
+        CONF_DATA_04H <= CONF_STATUS & CONF_COMMAND;
 
         CONF_MAX_LAT <= X"00";
         CONF_MIN_GNT <= X"00";
@@ -106,12 +97,6 @@ begin
                    CF_WR_COM=>CF_WR_COM, IRDY_REGn=>IRDY_REGn,
                    TRDYn=>TRDYn, CONF_WR_04H=>CONF_WR_04H,
                    CONF_WR_10H=>CONF_WR_10H, CONF_WR_3CH=>CONF_WR_3CH );
-        I2 : CONFIG_04H
-        Port Map ( AD_REG(31 downto 0)=>AD_REG(31 downto 0),
-        CBE_REGn(3 downto 0)=>CBE_REGn(3 downto 0),
-        CONF_WR_04H=>CONF_WR_04H, PCI_CLOCK=>PCI_CLOCK,
-        PCI_RSTn=>PCI_RSTn, PERR=>PERR, SERR=>SERR,
-        CONF_DATA_04H(31 downto 0)=>CONF_DATA_04H_DUMMY(31 downto 0) );
 
         process (PCI_CLOCK,PCI_RSTn)
         begin
@@ -165,4 +150,85 @@ begin
                 end if;
         end if;
         end process;
+
+        --*******************************************************************
+        --************* PCI Configuration Space Header "STATUS" *************
+        --*******************************************************************
+
+        CONF_STATUS(20 downto 16) <= "00000";-- Reserved
+        CONF_STATUS(21 ) <= '0';-- MAS/TAR: "R_O" :'0'= 33MHz / '1'= 66MHz
+        CONF_STATUS(22 ) <= '0';-- MAS/TAR: "R_O"
+        CONF_STATUS(23 ) <= '0';-- ???/???: "R_O" : fast back-to-back
+        CONF_STATUS(24 ) <= '0';-- Master :
+        --CONF_STATUS(26 downto 25) <= "00";-- Mas/Tar: "R_O" : timing fast for "DEVSEL"
+        CONF_STATUS(26 downto 25) <= "01";-- Mas/Tar: "R_O" : timing medium for "DEVSEL"
+        --CONF_STATUS(26 downto 25) <= "10";-- Mas/Tar: "R_O" : timing slow for "DEVSEL"
+        --CONF_STATUS(26 downto 25) <= "11";-- Mas/Tar: "R_O" : reserved
+        CONF_STATUS(27 ) <= '0';-- Target : "R_W" : Taget-Abort
+        CONF_STATUS(28 ) <= '0';-- Master : "R_W" : Taget-Abort
+        CONF_STATUS(29 ) <= '0';-- Master : "R_W" : Master-Abort
+        --CONF_STATUS(30 ) <= SERR;-- Mas/Tar: "R_W" : SERR
+        --CONF_STATUS(31 ) <= PERR;-- Mas/Tar: "R_W" : PERR
+
+        process (PCI_CLOCK,PCI_RSTn)
+        begin
+        if PCI_RSTn = '0' then
+                CONF_STATUS(30) <= '0';
+                CONF_STATUS(31) <= '0';
+
+        elsif (rising_edge(PCI_CLOCK)) then
+                if CONF_WR_04H = '1' and CBE_REGn(3) = '0' then
+                        CONF_STATUS(30) <= not (AD_REG(30) and CONF_STATUS(30));
+                        CONF_STATUS(31) <= not (AD_REG(31) and CONF_STATUS(31));
+
+                else
+                        CONF_STATUS(30) <= SERR or CONF_STATUS(30);
+                        CONF_STATUS(31) <= PERR or CONF_STATUS(31);
+
+                end if;
+        end if;
+        end process;
+
+        --*******************************************************************
+        --*********** PCI Configuration Space Header "COMMAND" **************
+        --*******************************************************************
+
+        -- CONF_COMMAND( 0) <= '0';-- I/O Space accesses ???
+        -- CONF_COMMAND( 1) <= '0';-- Mem Space accesses ???
+        -- CONF_COMMAND( 2) <= '0';-- abillity to act as a master on the PCI bus
+        -- CONF_COMMAND( 3) <= '0';-- Special Cycle ???
+        -- CONF_COMMAND( 4) <= '0';-- Master ???
+        -- CONF_COMMAND( 5) <= '0';-- VGA ???
+        -- CONF_COMMAND( 6) <= '0';-- Party checking enable/disable
+        CONF_COMMAND( 7) <= '0';-- address/data stepping ???
+        -- CONF_COMMAND( 8) <= '0';-- enable/disable "PCI_SERRn"
+        -- CONF_COMMAND( 9) <= '0';-- fast back-to-back
+        -- CONF_COMMAND(10) <= '0';-- Reserved
+        -- CONF_COMMAND(11) <= '0';-- Reserved
+        -- CONF_COMMAND(12) <= '0';-- Reserved
+        -- CONF_COMMAND(13) <= '0';-- Reserved
+        -- CONF_COMMAND(14) <= '0';-- Reserved
+        -- CONF_COMMAND(15) <= '0';-- Reserved
+
+        process (PCI_CLOCK,PCI_RSTn)
+        begin
+                if PCI_RSTn = '0' then
+                        CONF_COMMAND(15 downto 8) <= (others =>'0');
+                        CONF_COMMAND( 6 downto 0) <= (others =>'0');
+
+                elsif (rising_edge(PCI_CLOCK)) then
+
+                        if CONF_WR_04H = '1'and CBE_REGn(1) = '0' then
+                                CONF_COMMAND(15 downto 8) <= AD_REG(15 downto 8);
+                        else
+                                CONF_COMMAND(15 downto 8) <= CONF_COMMAND(15 downto 8);
+                        end if;
+
+                        if CONF_WR_04H = '1'and CBE_REGn(0) = '0' then
+                                CONF_COMMAND( 6 downto 0) <= AD_REG( 6 downto 0);
+                        else
+                                CONF_COMMAND( 6 downto 0) <= CONF_COMMAND( 6 downto 0);
+                        end if;
+                end if;
+        end process;
 end SCHEMATIC;