Merge pull request #3 from mherlev/master

OCP clock domain crossing

.gitignore

@@ -4,4 +4,33 @@ transcript
 work/
 sched.xml
 .prj
-*.dbg
+*.dbg
+
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+*.swp
+
+#OS X
+.DS_Store
+.AppleDouble
+.LSOverride
+
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+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
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src/cdc/common/OCPBurstClockCrossingInterface_types.vhd

@@ -0,0 +1,66 @@
+--------------------------------------------------------------------------------
+-- Copyright (c) 2016, Mathias Herlev
+-- All rights reserved.
+-- 
+-- Redistribution and use in source and binary forms, with or without
+-- modification, are permitted provided that the following conditions are met:
+-- 
+-- 1. Redistributions of source code must retain the above copyright notice, 
+-- this list of conditions and the following disclaimer.
+-- 2. Redistributions in binary form must reproduce the above copyright notice,
+-- this list of conditions and the following disclaimer in the documentation
+-- and/or other materials provided with the distribution.
+-- 
+-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+-- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+-- POSSIBILITY OF SUCH DAMAGE.
+--------------------------------------------------------------------------------
+-- Title		: OCPBurst Interface Types
+-- Type		 	: Type Package
+-- Description  : Record types for OCPburst CDC interface
+--------------------------------------------------------------------------------
+LIBRARY ieee;
+USE ieee.std_logic_1164.all;
+LIBRARY work;
+USE work.ocp.all;
+
+PACKAGE OCPBurstCDC_types IS
+
+    TYPE OCPBurstCDCIn_r IS
+    RECORD
+        clk_A		: std_logic;
+        rst_A		: std_logic;
+        clk_B		: std_logic;
+        rst_B		: std_logic;
+        OCPB_slave	: ocp_burst_s;
+        OCPB_master	: ocp_burst_m;
+    END RECORD;
+
+    TYPE OCPBurstCDCOut_r IS
+    RECORD
+        OCPB_A	: ocp_burst_s;
+        OCPB_B	: ocp_burst_m;
+    END RECORD;
+
+    TYPE AsyncBurst_A_r IS
+    RECORD
+        req		: std_logic;
+        Data	: ocp_burst_m;
+        RegAddr	: std_logic_vector(1 downto 0);
+    END RECORD;
+
+    TYPE AsyncBurst_B_r IS
+    RECORD
+        ack     : std_logic;
+        Data	: ocp_burst_s;
+        RegAddr	: std_logic_vector(1 downto 0);
+    END RECORD;
+END OCPBurstCDC_types;

src/cdc/common/OCPIOClockCrossingInterface_types.vhd

@@ -0,0 +1,65 @@
+--------------------------------------------------------------------------------
+-- Copyright (c) 2016, Mathias Herlev
+-- All rights reserved.
+-- 
+-- Redistribution and use in source and binary forms, with or without
+-- modification, are permitted provided that the following conditions are met:
+-- 
+-- 1. Redistributions of source code must retain the above copyright notice, 
+-- this list of conditions and the following disclaimer.
+-- 2. Redistributions in binary form must reproduce the above copyright notice,
+-- this list of conditions and the following disclaimer in the documentation
+-- and/or other materials provided with the distribution.
+-- 
+-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+-- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+-- POSSIBILITY OF SUCH DAMAGE.
+--------------------------------------------------------------------------------
+-- Title		: OCPBurst Interface Types
+-- Type		    : Type Package
+-- Description  : Record types for OCPio CDC interface
+--------------------------------------------------------------------------------
+LIBRARY ieee;
+USE ieee.std_logic_1164.all;
+LIBRARY work;
+USE work.ocp.all;
+PACKAGE OCPIOCDC_types IS
+
+    TYPE OCPIOCDCIn_r IS
+    RECORD
+        clk_A	: std_logic;
+        rst_A	: std_logic;
+        clk_B	: std_logic;
+        rst_B	: std_logic;
+        ocpio_B	: ocp_io_s;
+        ocpio_A	: ocp_io_m;
+    END RECORD;
+
+    TYPE OCPIOCDCOut_r IS
+    RECORD
+        ocpio_A	: ocp_io_s;
+        ocpio_B	: ocp_io_m;
+    END RECORD;
+
+    TYPE asyncIO_A_r IS
+    RECORD
+        req		: std_logic;
+        data	: ocp_io_m;
+    END RECORD;
+
+    TYPE asyncIO_B_r IS 
+    RECORD
+        ack		: std_logic;
+        data	: ocp_io_s;
+    END RECORD;
+
+
+END OCPIOCDC_types;

src/cdc/common/OCPInterface.vhd

@@ -0,0 +1,47 @@
+--------------------------------------------------------------------------------
+-- Copyright (c) 2016, Mathias Herlev
+-- All rights reserved.
+-- 
+-- Redistribution and use in source and binary forms, with or without
+-- modification, are permitted provided that the following conditions are met:
+-- 
+-- 1. Redistributions of source code must retain the above copyright notice, 
+-- this list of conditions and the following disclaimer.
+-- 2. Redistributions in binary form must reproduce the above copyright notice,
+-- this list of conditions and the following disclaimer in the documentation
+-- and/or other materials provided with the distribution.
+-- 
+-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+-- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+-- POSSIBILITY OF SUCH DAMAGE.
+--------------------------------------------------------------------------------
+-- Title		: OCPBurst Interface Types
+-- Type		 	: Type Package
+-- Description  : Idle constants
+--------------------------------------------------------------------------------
+LIBRARY ieee;
+USE ieee.std_logic_1164.all;
+LIBRARY work;
+USE work.ocp.all;
+
+
+PACKAGE OCPInterface IS
+
+	CONSTANT OCPBurstMasterIdle_c : ocp_burst_m := (OCP_CMD_IDLE,
+												   (OTHERS => '0'),
+												   (OTHERS => '0'),
+												   (OTHERS => '0'),
+
+	CONSTANT OCPBurstSlaveIdle_c : ocp_burst_s := (OCP_RESP_NULL,
+												  (OTHERS => '0'),
+												  '0',
+												  '0');
+END OCPInterface;

src/cdc/ocpburst/ocpburst_cdc.vhd

@@ -0,0 +1,84 @@
+--------------------------------------------------------------------------------
+-- Copyright (c) 2016, Mathias Herlev
+-- All rights reserved.
+-- 
+-- Redistribution and use in source and binary forms, with or without
+-- modification, are permitted provided that the following conditions are met:
+-- 
+-- 1. Redistributions of source code must retain the above copyright notice, 
+-- this list of conditions and the following disclaimer.
+-- 2. Redistributions in binary form must reproduce the above copyright notice,
+-- this list of conditions and the following disclaimer in the documentation
+-- and/or other materials provided with the distribution.
+-- 
+-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+-- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+-- POSSIBILITY OF SUCH DAMAGE.
+--------------------------------------------------------------------------------
+-- Title   	: OCPBurst Clock Crossing Interface
+-- Type		: Entity
+-- Description : OCPburst CDC wrapper
+--------------------------------------------------------------------------------
+LIBRARY ieee;
+USE ieee.std_logic_1164.all;
+LIBRARY work;
+USE work.OCPBurstCDC_types.all;
+USE work.ocp.all;
+ENTITY OCPBurstCDC IS
+	PORT(   input   : IN	OCPBurstCDCIn_r;
+			output  : OUT   OCPBurstCDCOut_r
+	);
+END ENTITY OCPBurstCDC;
+
+ARCHITECTURE rtl OF OCPBurstCDC IS
+
+	COMPONENT OCPBurstCDC_A IS
+	    PORT(   clk         : IN    std_logic;
+	            rst         : IN    std_logic;
+	            syncIn      : IN    ocp_burst_m;
+	            syncOut     : OUT   ocp_burst_s;
+	            asyncOut    : OUT   AsyncBurst_A_r;
+	            asyncIn     : IN    AsyncBurst_B_r
+	    );
+	END COMPONENT OCPBurstCDC_A;
+
+	COMPONENT OCPBurstCDC_B IS
+	    PORT(   clk         : IN    std_logic;
+	            rst         : IN    std_logic;
+	   		 	syncIn      : IN    ocp_burst_s;
+	            syncOut     : OUT   ocp_burst_m;
+	            asyncOut    : OUT   AsyncBurst_B_r;
+	            asyncIn     : IN    AsyncBurst_A_r
+	     );
+	END COMPONENT OCPBurstCDC_B;
+
+	SIGNAL async_A : AsyncBurst_A_r;
+	SIGNAL async_B : AsyncBurst_B_r;
+
+BEGIN
+
+	CDC_A  : OCPBurstCDC_A
+	PORT MAP(input.clk_A,
+	input.rst_A,
+	input.OCPB_master,
+	output.OCPB_A,
+	async_A,
+	async_B);
+
+	CDC_B   : OCPBurstCDC_B
+	PORT MAP(input.clk_B,
+	input.rst_B,
+	input.OCPB_slave,
+	output.OCPB_B,
+	async_B,
+	async_A);
+
+END ARCHITECTURE rtl;