--other comm. device
constant CONF_CLASS_CODE :std_logic_vector (31 downto 8) := X"078000";
+ 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);
+
+ 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);
+
+ -- PCI Configuration Space Header
+ --
+ -- \ Bit
+ -- \
+ --Address |31 24|23 16|15 8|7 0|
+ -----------------------------------------------------------------
+ --00 |Device ID |Vendor ID |
+ --04 |Status |Command |
+ --08 |Class Code |Revision ID |
+ --0C |BIST |Header Type |Latency T. |Cache L.S. |
+ --10-24 |Base Address Register |
+ --28 |Cardbus CIS Pointer |
+ --2C |Subsystem ID |Subsystem Vendor ID |
+ --30 |Expansion ROM Base Address |
+ --34 |Reserved |
+ --38 |Reserved |
+ --3C |Max_Lat |Min_Gnt |Int_Pin |Int_Line |
+ --40-FF | |
+ -----------------------------------------------------------------
+
+
+ --PCI Bus Commands
+ --C/BE[3..0] Command Type
+ --------------------------------------
+ -- 0000 Interrupt Acknowledge
+ -- 0001 Special Cycle
+ -- 0010 I/O Read
+ -- 0011 I/O Write
+ -- 0100 Reserved
+ -- 0101 Reserved
+ -- 0110 Memory Read
+ -- 0111 Memory Write
+ --
+ -- 1000 Reserved
+ -- 1001 Reserved
+ -- 1010 Configuration Read
+ -- 1011 Configuration Write
+ -- 1100 Memory Read Multiple
+ -- 1101 Dual Address Cycle
+ -- 1110 Memory Read Line
+ -- 1111 Memory Write and Invalidate
+
+
+ --PCI Byte Enable
+ --C/BE[3..0] gueltige Datenbits
+ -------------------------------
+ -- 0000 AD 31..0
+ -- 1000 AD 23..0
+ -- 1100 AD 15..0
+ -- 1110 AD 7..0
+
+ constant CMD_INT_ACK :std_logic_vector(3 downto 0) := "0000";
+ constant CMD_SP_CYC :std_logic_vector(3 downto 0) := "0001";
+ constant CMD_IO_READ :std_logic_vector(3 downto 0) := "0010";
+ constant CMD_IO_WRITE :std_logic_vector(3 downto 0) := "0011";
+ constant CMD_RES_4 :std_logic_vector(3 downto 0) := "0100";
+ constant CMD_RES_5 :std_logic_vector(3 downto 0) := "0101";
+ constant CMD_MEM_READ :std_logic_vector(3 downto 0) := "0110";
+ constant CMD_MEM_WRITE :std_logic_vector(3 downto 0) := "0111";
+ constant CMD_RES_8 :std_logic_vector(3 downto 0) := "1000";
+ constant CMD_RES_9 :std_logic_vector(3 downto 0) := "1001";
+ constant CMD_CONF_READ :std_logic_vector(3 downto 0) := "1010";
+ constant CMD_CONF_WRITE :std_logic_vector(3 downto 0) := "1011";
+ constant CMD_MEM_READ_M :std_logic_vector(3 downto 0) := "1100";
+ constant CMD_DU_ADR_CYC :std_logic_vector(3 downto 0) := "1101";
+ constant CMD_MEN_READ_L :std_logic_vector(3 downto 0) := "1110";
+ constant CMD_MEM_WRITE_I :std_logic_vector(3 downto 0) := "1111";
+
+ signal CONFIG_ADDR :std_logic_vector(7 downto 0);
+ signal CONFIG_WRITE :std_logic_vector(3 downto 0);
+
+ ----
+ ----
+
SIGNAL gnd : std_logic := '0';
SIGNAL vcc : std_logic := '1';
signal CONF_WR_10H : std_logic;
signal CONF_WR_3CH : std_logic;
signal CONF_READ_SEL : std_logic_vector (2 downto 0);
- signal CONF_DATA_10H_DUMMY : std_logic_vector (31 downto 0);
signal CONF_DATA_04H_DUMMY : std_logic_vector (31 downto 0);
signal CONF_DATA_3CH : std_logic_vector (31 downto 0);
signal CONF_DATA_08H : std_logic_vector (31 downto 0);
signal CONF_DATA_00H : std_logic_vector (31 downto 0);
- component CONFIG_MUX_0
- Port ( CONF_DATA_00H : In std_logic_vector (31 downto 0);
- CONF_DATA_04H : In std_logic_vector (31 downto 0);
- CONF_DATA_08H : In std_logic_vector (31 downto 0);
- CONF_DATA_10H : In std_logic_vector (31 downto 0);
- CONF_DATA_3CH : In std_logic_vector (31 downto 0);
- READ_SEL : In std_logic_vector (2 downto 0);
- CONF_DATA : Out std_logic_vector (31 downto 0) );
- end component;
-
component CONFIG_RD_0
Port ( ADDR_REG : In std_logic_vector (31 downto 0);
CF_RD_COM : In std_logic;
READ_SEL : Out std_logic_vector (2 downto 0) );
end component;
- component CONFIG_WR_0
- Port ( ADDR_REG : In std_logic_vector (31 downto 0);
- CF_WR_COM : In std_logic;
- IRDY_REGn : In std_logic;
- TRDYn : In std_logic;
- CONF_WR_04H : Out std_logic;
- CONF_WR_10H : Out std_logic;
- CONF_WR_3CH : Out std_logic );
- end component;
-
- component CONFIG_3CH
- Port ( AD_REG : In std_logic_vector (31 downto 0);
- CBE_REGn : In std_logic_vector (3 downto 0);
- CONF_WR_3CH : In std_logic;
- PCI_CLOCK : In std_logic;
- PCI_RSTn : In std_logic;
- CONF_DATA_3CH : Out std_logic_vector (31 downto 0) );
- end component;
-
- component CONFIG_10H
- Port ( AD_REG : In std_logic_vector (31 downto 0);
- CBE_REGn : In std_logic_vector (3 downto 0);
- CONF_WR_10H : In std_logic;
- PCI_CLOCK : In std_logic;
- PCI_RSTn : In std_logic;
- CONF_DATA_10H : Out std_logic_vector (31 downto 0) );
- 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_STATUS & CONF_COMMAND;
+
+ 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
+ CONF_DATA_3CH <= CONF_MAX_LAT & CONF_MIN_GNT & CONF_INT_PIN & CONF_INT_LINE;
+
+ CONF_BAS_ADDR_REG(1 downto 0) <= "01";-- Base Address Register for "I/O"
+ CONF_BAS_ADDR_REG(3 downto 2) <= "00";-- IO Bereich = 16 BYTE
+ CONF_DATA_10H <= CONF_BAS_ADDR_REG;
- CONF_DATA_04H <= CONF_DATA_04H_DUMMY;
- CONF_DATA_10H <= CONF_DATA_10H_DUMMY;
-
- I10 : CONFIG_MUX_0
- Port Map ( CONF_DATA_00H(31 downto 0)=>CONF_DATA_00H(31 downto 0),
- CONF_DATA_04H(31 downto 0)=>CONF_DATA_04H_DUMMY(31 downto 0),
- CONF_DATA_08H(31 downto 0)=>CONF_DATA_08H(31 downto 0),
- CONF_DATA_10H(31 downto 0)=>CONF_DATA_10H_DUMMY(31 downto 0),
- CONF_DATA_3CH(31 downto 0)=>CONF_DATA_3CH(31 downto 0),
- READ_SEL(2 downto 0)=>CONF_READ_SEL(2 downto 0),
- CONF_DATA(31 downto 0)=>CONF_DATA(31 downto 0) );
I9 : CONFIG_RD_0
Port Map ( ADDR_REG(31 downto 0)=>ADDR_REG(31 downto 0),
CF_RD_COM=>CF_RD_COM,
READ_SEL(2 downto 0)=>CONF_READ_SEL(2 downto 0) );
- I8 : CONFIG_WR_0
- Port Map ( ADDR_REG(31 downto 0)=>ADDR_REG(31 downto 0),
- 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 );
- I6 : CONFIG_3CH
- Port Map ( AD_REG(31 downto 0)=>AD_REG(31 downto 0),
- CBE_REGn(3 downto 0)=>CBE_REGn(3 downto 0),
- CONF_WR_3CH=>CONF_WR_3CH, PCI_CLOCK=>PCI_CLOCK,
- PCI_RSTn=>PCI_RSTn,
- CONF_DATA_3CH(31 downto 0)=>CONF_DATA_3CH(31 downto 0) );
- I5 : CONFIG_10H
- Port Map ( AD_REG(31 downto 0)=>AD_REG(31 downto 0),
- CBE_REGn(3 downto 0)=>CBE_REGn(3 downto 0),
- CONF_WR_10H=>CONF_WR_10H, PCI_CLOCK=>PCI_CLOCK,
- PCI_RSTn=>PCI_RSTn,
- CONF_DATA_10H(31 downto 0)=>CONF_DATA_10H_DUMMY(31 downto 0) );
- 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
+ if PCI_RSTn = '0' then
+ CONF_INT_LINE <= (others => '0');
+
+ elsif (rising_edge(PCI_CLOCK)) 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;
+
+ process (PCI_CLOCK,PCI_RSTn)
+ begin
+
+ -- if PCI_RSTn = '0' then CONF_BAS_ADDR_REG(31 downto 2) <= (others =>'0');
+ if PCI_RSTn = '0' then
+ CONF_BAS_ADDR_REG(31 downto 4) <= (others =>'0');
+
+ elsif (rising_edge(PCI_CLOCK)) then
+
+ if CONF_WR_10H = '1'and CBE_REGn(3) = '0' then
+ CONF_BAS_ADDR_REG(31 downto 24) <= AD_REG(31 downto 24);
+ else
+ CONF_BAS_ADDR_REG(31 downto 24) <= CONF_BAS_ADDR_REG(31 downto 24);
+ end if;
+
+ if CONF_WR_10H = '1'and CBE_REGn(2) = '0' then
+ CONF_BAS_ADDR_REG(23 downto 16) <= AD_REG(23 downto 16);
+ else
+ CONF_BAS_ADDR_REG(23 downto 16) <= CONF_BAS_ADDR_REG(23 downto 16);
+ end if;
+
+ if CONF_WR_10H = '1'and CBE_REGn(1) = '0' then
+ CONF_BAS_ADDR_REG(15 downto 8) <= AD_REG(15 downto 8);
+ else
+ CONF_BAS_ADDR_REG(15 downto 8) <= CONF_BAS_ADDR_REG(15 downto 8);
+ end if;
+
+ -- if CONF_WR_10H = '1'and CBE_REGn(0) = '0' then
+ -- CONF_BAS_ADDR_REG( 7 downto 2) <= AD_REG( 7 downto 2);
+ -- else
+ -- CONF_BAS_ADDR_REG( 7 downto 2) <= CONF_BAS_ADDR_REG( 7 downto 2);
+ -- end if;
+
+ if CONF_WR_10H = '1'and CBE_REGn(0) = '0' then
+ CONF_BAS_ADDR_REG( 7 downto 4) <= AD_REG( 7 downto 4);
+ else
+ CONF_BAS_ADDR_REG( 7 downto 4) <= CONF_BAS_ADDR_REG( 7 downto 4);
+ 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;
+
+
+ --*******************************************************************
+ --******************* PCI Write Configuration Address ***************
+ --*******************************************************************
+
+ CONFIG_ADDR(7 downto 0) <= ADDR_REG(7 downto 0);
+
+
+ process (CF_WR_COM,IRDY_REGn,TRDYn,CONFIG_ADDR)
+ begin
+
+ if CF_WR_COM = '1' and IRDY_REGn = '0' and TRDYn = '0' then
+
+ if CONFIG_ADDR = X"04" then
+ CONFIG_WRITE <= "0001";
+
+ elsif CONFIG_ADDR = X"10" then
+ CONFIG_WRITE <= "0010";
+
+ elsif CONFIG_ADDR = X"3C" then
+ CONFIG_WRITE <= "0100";
+
+ -- elsif CONFIG_ADDR = X"40" then
+ -- CONFIG_WRITE <= "1000";
+ else
+ CONFIG_WRITE <= "0000";
+ end if;
+ else
+ CONFIG_WRITE <= "0000";
+ end if;
+ end process;
+
+ CONF_WR_04H <= CONFIG_WRITE(0);
+ CONF_WR_10H <= CONFIG_WRITE(1);
+ CONF_WR_3CH <= CONFIG_WRITE(2);
+ --CONF_WR_40H <= CONFIG_WRITE(3);
end SCHEMATIC;
projects / raggedstone / blobdiff