--- /dev/null
+PROJECT := dhwk
+
+include ../common/Makefile.common
--- /dev/null
+verilog work "source/sync.v"
+verilog work "source/pcidec.v"
+verilog work "source/pcidmux.v"
+
+verilog work "source/pciwbsequ.v"
+verilog work "source/pcipargen.v"
+
+vhdl work "source/pciwbsequ.vhd"
+vhdl work "source/pfs.vhd"
+vhdl work "source/new_pciregs.vhd"
+vhdl work "source/pcipargen.vhd"
+vhdl work "source/new_pci32tlite.vhd"
+vhdl work "source/top_dhwk.vhd"
+vhdl work "source/heartbeat.vhd"
--- /dev/null
+NET "LED2" LOC = "AB5" | IOSTANDARD = LVCMOS33 ;
+NET "LED3" LOC = "AA5" | IOSTANDARD = LVCMOS33 ;
+NET "PCI_AD<0>" LOC = "A5" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<10>" LOC = "E9" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<11>" LOC = "F11" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<12>" LOC = "E10" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<13>" LOC = "A8" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<14>" LOC = "B9" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<15>" LOC = "B10" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<16>" LOC = "F17" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<17>" LOC = "F16" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<18>" LOC = "A14" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<19>" LOC = "B14" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<1>" LOC = "B5" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<20>" LOC = "B15" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<21>" LOC = "A15" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<22>" LOC = "F12" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<23>" LOC = "F13" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<24>" LOC = "D15" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<25>" LOC = "E15" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<26>" LOC = "D17" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<27>" LOC = "C17" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<28>" LOC = "B17" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<29>" LOC = "E17" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<2>" LOC = "E6" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<30>" LOC = "A18" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<31>" LOC = "B18" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<3>" LOC = "D6" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<4>" LOC = "C6" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<5>" LOC = "B6" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<6>" LOC = "D7" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<7>" LOC = "E7" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<8>" LOC = "B8" | IOSTANDARD = PCI33_3 ;
+NET "PCI_AD<9>" LOC = "F10" | IOSTANDARD = PCI33_3 ;
+NET "PCI_CBE<0>" LOC = "F9" | IOSTANDARD = PCI33_3 ;
+NET "PCI_CBE<1>" LOC = "C10" | IOSTANDARD = PCI33_3 ;
+NET "PCI_CBE<2>" LOC = "D13" | IOSTANDARD = PCI33_3 ;
+NET "PCI_CBE<3>" LOC = "E13" | IOSTANDARD = PCI33_3 ;
+NET "PCI_CLK" LOC = "A11" | IOSTANDARD = PCI33_3 ;
+NET "PCI_IDSEL" LOC = "D14" | IOSTANDARD = PCI33_3 ;
+NET "PCI_nDEVSEL" LOC = "E12" | IOSTANDARD = PCI33_3 ;
+NET "PCI_nFRAME" LOC = "C13" | IOSTANDARD = PCI33_3 ;
+NET "PCI_nINT" LOC = "B19" | IOSTANDARD = PCI33_3 | SLEW = FAST ;
+NET "PCI_nIRDY" LOC = "A13" | IOSTANDARD = PCI33_3 ;
+NET "PCI_nPERR" LOC = "D12" | IOSTANDARD = PCI33_3 | SLEW = FAST ;
+NET "PCI_nRES" LOC = "A19" | IOSTANDARD = PCI33_3 ;
+NET "PCI_nSERR" LOC = "B12" | IOSTANDARD = PCI33_3 | SLEW = FAST ;
+NET "PCI_nSTOP" LOC = "A12" | IOSTANDARD = PCI33_3 | SLEW = FAST ;
+NET "PCI_nTRDY" LOC = "B13" | IOSTANDARD = PCI33_3 | SLEW = FAST ;
+NET "PCI_PAR" LOC = "A9" | IOSTANDARD = PCI33_3 | SLEW = FAST ;
+NET "LED5" LOC = "AB4" | IOSTANDARD = LVCMOS33 ;
+NET "LED4" LOC = "AA4" | IOSTANDARD = LVCMOS33 ;
--- /dev/null
+
+-w
+-g DebugBitstream:No
+-g Binary:no
+-g CRC:Enable
+-g ConfigRate:6
+-g CclkPin:PullUp
+-g M0Pin:PullUp
+-g M1Pin:PullUp
+-g M2Pin:PullUp
+-g ProgPin:PullUp
+-g DonePin:PullUp
+-g TckPin:PullUp
+-g TdiPin:PullUp
+-g TdoPin:PullUp
+-g TmsPin:PullUp
+-g UnusedPin:PullUp
+-g UserID:0xFFFFFFFF
+-g DCIUpdateMode:AsRequired
+-g StartUpClk:CClk
+-g DONE_cycle:4
+-g GTS_cycle:5
+-g GWE_cycle:6
+-g LCK_cycle:NoWait
+-g Security:None
+-g DonePipe:No
+-g DriveDone:No
--- /dev/null
+set -xsthdpdir ./xst
+run
+-ifn dhwk.prj
+-ifmt mixed
+-ofn dhwk
+-ofmt NGC
+-p xc3s1500-fg456-4
+-top dhwk
+-opt_mode Speed
+-opt_level 1
+-iuc NO
+-lso dhwk.lso
+-keep_hierarchy NO
+-glob_opt AllClockNets
+-rtlview Yes
+-read_cores YES
+-write_timing_constraints NO
+-cross_clock_analysis NO
+-hierarchy_separator /
+-bus_delimiter <>
+-case maintain
+-slice_utilization_ratio 100
+-verilog2001 YES
+-fsm_extract YES -fsm_encoding Auto
+-safe_implementation No
+-fsm_style lut
+-ram_extract Yes
+-ram_style Auto
+-rom_extract Yes
+-rom_style Auto
+-mux_extract YES
+-decoder_extract YES
+-priority_extract YES
+-shreg_extract YES
+-shift_extract YES
+-xor_collapse YES
+-resource_sharing YES
+-mult_style auto
+-iobuf YES
+-max_fanout 500
+-bufg 8
+-register_duplication YES
+-equivalent_register_removal YES
+-register_balancing No
+-slice_packing YES
+-optimize_primitives NO
+-use_clock_enable Yes
+-use_sync_set Yes
+-use_sync_reset Yes
+-iob auto
+-slice_utilization_ratio_maxmargin 5
--- /dev/null
+module disp_dec(disp_dec_in, disp_dec_out);\r
+ input [3:0] disp_dec_in;\r
+ output reg [6:0] disp_dec_out;\r
+\r
+ always @(disp_dec_in)\r
+ begin\r
+ case (disp_dec_in)\r
+ 4'b0000: disp_dec_out <= 7'b1000000;\r
+ 4'b0001: disp_dec_out <= 7'b1111001;\r
+ 4'b0010: disp_dec_out <= 7'b0100100;\r
+ 4'b0011: disp_dec_out <= 7'b0110000;\r
+\r
+ 4'b0100: disp_dec_out <= 7'b0011001;\r
+ 4'b0101: disp_dec_out <= 7'b0010010;\r
+ 4'b0110: disp_dec_out <= 7'b0000010;\r
+ 4'b0111: disp_dec_out <= 7'b1111000;\r
+\r
+ 4'b1000: disp_dec_out <= 7'b0000000;\r
+ 4'b1001: disp_dec_out <= 7'b0010000;\r
+ 4'b1010: disp_dec_out <= 7'b0001000;\r
+ 4'b1011: disp_dec_out <= 7'b0000011;\r
+\r
+ 4'b1100: disp_dec_out <= 7'b1000110;\r
+ 4'b1101: disp_dec_out <= 7'b0100001;\r
+ 4'b1110: disp_dec_out <= 7'b0000110;\r
+ 4'b1111: disp_dec_out <= 7'b0001110;\r
+ endcase\r
+ end\r
+endmodule\r
--- /dev/null
+library ieee;
+
+use ieee.std_logic_1164.all;
+use ieee.std_logic_unsigned.all;
+
+entity heartbeat is
+generic (
+ divider : std_logic_vector(31 downto 0) := X"01F78A40"
+);
+
+port (
+ clk_i : in std_logic;
+ nrst_i : in std_logic;
+ led2_o : out std_logic;
+ led3_o : out std_logic;
+ led4_o : out std_logic;
+ led5_o : out std_logic
+);
+
+end heartbeat;
+
+architecture rtl of heartbeat is
+begin
+
+process(clk_i, nrst_i)
+variable counter : std_logic_vector(31 downto 0);
+variable state : std_logic := '0';
+begin
+
+if (clk_i'event AND clk_i = '1') then
+ if nrst_i = '0' then
+ counter := (others => '0');
+ else
+ led5_o <= state;
+ led2_o <= state;
+ led4_o <= not state;
+ led3_o <= not state;
+ counter := counter + 1;
+ if counter = divider then
+ state := not state;
+ counter := (others => '0');
+ end if;
+ end if;
+end if;
+end process;
+end architecture;
--- /dev/null
+--+-------------------------------------------------------------------------------------------------+\r
+--| |\r
+--| File: pci32tlite.vhd |\r
+--| |\r
+--| Components: pcidec_new.vhd |\r
+--| pciwbsequ.vhd |\r
+--| pcidmux.vhd |\r
+--| pciregs.vhd |\r
+--| pcipargen.vhd |\r
+--| -- Libs -- |\r
+--| ona.vhd |\r
+--| |\r
+--| Description: TARGET PCI : |\r
+--| |\r
+--| * PCI Target 32 Bits |\r
+--| * BAR0 32MByte address space |\r
+--| * Whisbone compatible: D16, 32MB address space |\r
+--| |\r
+--+-------------------------------------------------------------------------------------------------+\r
+--| |\r
+--| Revision history : |\r
+--| Date Version Author Description |\r
+--| 2005-05-13 R00A00 PAU First alfa revision (eng) |\r
+--| 2006-01-05 R00B00 MS inverted reset nres |\r
+--| and added debug signals debug_init and debug_access | |\r
+--| |\r
+--| To do: |\r
+--| |\r
+--+-------------------------------------------------------------------------------------------------+\r
+--+-----------------------------------------------------------------+\r
+--| |\r
+--| Copyright (C) 2005 Peio Azkarate, peio@opencores.org | \r
+--| |\r
+--| This source file may be used and distributed without |\r
+--| restriction provided that this copyright statement is not |\r
+--| removed from the file and that any derivative work contains |\r
+--| the original copyright notice and the associated disclaimer. |\r
+--| |\r
+--| This source file is free software; you can redistribute it |\r
+--| and/or modify it under the terms of the GNU Lesser General |\r
+--| Public License as published by the Free Software Foundation; |\r
+--| either version 2.1 of the License, or (at your option) any |\r
+--| later version. |\r
+--| |\r
+--| This source is distributed in the hope that it will be |\r
+--| useful, but WITHOUT ANY WARRANTY; without even the implied |\r
+--| warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |\r
+--| PURPOSE. See the GNU Lesser General Public License for more |\r
+--| details. |\r
+--| |\r
+--| You should have received a copy of the GNU Lesser General |\r
+--| Public License along with this source; if not, download it |\r
+--| from http://www.opencores.org/lgpl.shtml |\r
+--| |\r
+--+-----------------------------------------------------------------+ \r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| LIBRARIES |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+library ieee;\r
+use ieee.std_logic_1164.all;\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| ENTITY |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+entity pci32tlite is\r
+generic (\r
+\r
+ vendorID : std_logic_vector(15 downto 0) := x"10EE";\r
+ deviceID : std_logic_vector(15 downto 0) := x"0100";\r
+ revisionID : std_logic_vector(7 downto 0) := x"37";\r
+ subsystemID : std_logic_vector(15 downto 0) := x"1558";\r
+ subsystemvID : std_logic_vector(15 downto 0) := x"0480";\r
+ jcarr1ID : std_logic_vector(31 downto 0) := x"12345671";\r
+ jcarr2ID : std_logic_vector(31 downto 0) := x"12345672";\r
+ jcarr3ID : std_logic_vector(31 downto 0) := x"12345673";\r
+ jcarr4ID : std_logic_vector(31 downto 0) := x"12345674";\r
+ jcarr5ID : std_logic_vector(31 downto 0) := x"12345675";\r
+ jcarr6ID : std_logic_vector(31 downto 0) := x"12345676";\r
+ jcarr7ID : std_logic_vector(31 downto 0) := x"12345677";\r
+ jcarr8ID : std_logic_vector(31 downto 0) := x"12345678";\r
+ jcarr9ID : std_logic_vector(31 downto 0) := x"12345679";\r
+ jcarr10ID : std_logic_vector(31 downto 0) := x"12345680";\r
+ jcarr11ID : std_logic_vector(31 downto 0) := x"12345681";\r
+ jcarr12ID : std_logic_vector(31 downto 0) := x"12345682";\r
+ jcarr13ID : std_logic_vector(31 downto 0) := x"12345683";\r
+ jcarr14ID : std_logic_vector(31 downto 0) := x"12345684";\r
+ jcarr15ID : std_logic_vector(31 downto 0) := x"12345685";\r
+ jcarr16ID : std_logic_vector(31 downto 0) := x"12345686";\r
+ jcarr17ID : std_logic_vector(31 downto 0) := x"12345687";\r
+ jcarr18ID : std_logic_vector(31 downto 0) := x"12345688";\r
+ jcarr19ID : std_logic_vector(31 downto 0) := x"12345689";\r
+ jcarr20ID : std_logic_vector(31 downto 0) := x"12345690";\r
+ jcarr21ID : std_logic_vector(31 downto 0) := x"12345691";\r
+ jcarr22ID : std_logic_vector(31 downto 0) := x"12345692";\r
+ jcarr23ID : std_logic_vector(31 downto 0) := x"12345693";\r
+ jcarr24ID : std_logic_vector(31 downto 0) := x"12345694";\r
+ jcarr25ID : std_logic_vector(31 downto 0) := x"12345695";\r
+ jcarr26ID : std_logic_vector(31 downto 0) := x"12345696";\r
+ jcarr27ID : std_logic_vector(31 downto 0) := x"12345697";\r
+ jcarr28ID : std_logic_vector(31 downto 0) := x"12345698";\r
+ jcarr29ID : std_logic_vector(31 downto 0) := x"12345699";\r
+ jcarr30ID : std_logic_vector(31 downto 0) := x"12345700";\r
+ jcarr31ID : std_logic_vector(31 downto 0) := x"12345701";\r
+ jcarr32ID : std_logic_vector(31 downto 0) := x"12345702";\r
+ jcarr33ID : std_logic_vector(31 downto 0) := x"12345703";\r
+ jcarr34ID : std_logic_vector(31 downto 0) := x"12345704";\r
+ jcarr35ID : std_logic_vector(31 downto 0) := x"12345705";\r
+ jcarr36ID : std_logic_vector(31 downto 0) := x"12345706";\r
+ jcarr37ID : std_logic_vector(31 downto 0) := x"12345707";\r
+ jcarr38ID : std_logic_vector(31 downto 0) := x"12345708";\r
+ jcarr39ID : std_logic_vector(31 downto 0) := x"12345709";\r
+ jcarr40ID : std_logic_vector(31 downto 0) := x"12345710";\r
+ jcarr41ID : std_logic_vector(31 downto 0) := x"12345711";\r
+ jcarr42ID : std_logic_vector(31 downto 0) := x"12345712"\r
+\r
+);\r
+port (\r
+\r
+ -- General \r
+ clk33 : in std_logic;\r
+ nrst : in std_logic;\r
+ \r
+ -- PCI target 32bits\r
+ ad : inout std_logic_vector(31 downto 0);\r
+ cbe : in std_logic_vector(3 downto 0);\r
+ par : out std_logic; \r
+ frame : in std_logic;\r
+ irdy : in std_logic;\r
+ trdy : out std_logic;\r
+ devsel : out std_logic;\r
+ stop : out std_logic;\r
+ idsel : in std_logic;\r
+ perr : out std_logic;\r
+ serr : out std_logic;\r
+ intb : out std_logic;\r
+ \r
+ -- Master whisbone\r
+ wb_adr_o : out std_logic_vector(24 downto 1); \r
+ wb_dat_i : in std_logic_vector(15 downto 0);\r
+ wb_dat_o : out std_logic_vector(15 downto 0);\r
+ wb_sel_o : out std_logic_vector(1 downto 0);\r
+ wb_we_o : out std_logic;\r
+ wb_stb_o : inout std_logic;\r
+ wb_cyc_o : out std_logic;\r
+ wb_ack_i : in std_logic;\r
+ wb_err_i : in std_logic;\r
+ wb_int_i : in std_logic;\r
+\r
+ -- debug signals\r
+ debug_init : out std_logic;\r
+ debug_access : out std_logic \r
+\r
+);\r
+end pci32tlite;\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| ARCHITECTURE |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+architecture rtl of pci32tlite is\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| COMPONENTS |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+\r
+ component pcidec_new\r
+ port (\r
+ \r
+ clk_i : in std_logic;\r
+ nrst_i : in std_logic;\r
+ --\r
+ ad_i : in std_logic_vector(31 downto 0);\r
+ cbe_i : in std_logic_vector(3 downto 0);\r
+ idsel_i : in std_logic;\r
+ bar0_i : in std_logic_vector(31 downto 25);\r
+ memEN_i : in std_logic;\r
+ pciadrLD_i : in std_logic;\r
+ adrcfg_o : out std_logic;\r
+ adrmem_o : out std_logic;\r
+ adr_o : out std_logic_vector(24 downto 1);\r
+ cmd_o : out std_logic_vector(3 downto 0)\r
+ \r
+ );\r
+ end component;\r
+\r
+ \r
+ component pciwbsequ\r
+ port (\r
+ \r
+ -- General \r
+ clk_i : in std_logic;\r
+ nrst_i : in std_logic;\r
+ -- pci \r
+ cmd_i : in std_logic_vector(3 downto 0);\r
+ cbe_i : in std_logic_vector(3 downto 0);\r
+ frame_i : in std_logic;\r
+ irdy_i : in std_logic;\r
+ devsel_o : out std_logic;\r
+ trdy_o : out std_logic;\r
+ -- control\r
+ adrcfg_i : in std_logic;\r
+ adrmem_i : in std_logic;\r
+ pciadrLD_o : out std_logic;\r
+ pcidOE_o : out std_logic;\r
+ parOE_o : out std_logic; \r
+ wbdatLD_o : out std_logic;\r
+ wbrgdMX_o : out std_logic;\r
+ wbd16MX_o : out std_logic;\r
+ wrcfg_o : out std_logic;\r
+ rdcfg_o : out std_logic;\r
+ -- whisbone\r
+ wb_sel_o : out std_logic_vector(1 downto 0);\r
+ wb_we_o : out std_logic;\r
+ wb_stb_o : inout std_logic; \r
+ wb_cyc_o : out std_logic;\r
+ wb_ack_i : in std_logic;\r
+ wb_err_i : in std_logic; \r
+ -- debug signals\r
+ debug_init : out std_logic;\r
+ debug_access : out std_logic\r
+ );\r
+ end component;\r
+\r
+\r
+ component pcidmux\r
+ port (\r
+ \r
+ clk_i : in std_logic;\r
+ nrst_i : in std_logic;\r
+ --\r
+ d_io : inout std_logic_vector(31 downto 0);\r
+ pcidatout_o : out std_logic_vector(31 downto 0);\r
+ pcidOE_i : in std_logic;\r
+ wbdatLD_i : in std_logic;\r
+ wbrgdMX_i : in std_logic;\r
+ wbd16MX_i : in std_logic;\r
+ wb_dat_i : in std_logic_vector(15 downto 0);\r
+ wb_dat_o : out std_logic_vector(15 downto 0);\r
+ rg_dat_i : in std_logic_vector(31 downto 0);\r
+ rg_dat_o : out std_logic_vector(31 downto 0)\r
+ \r
+ );\r
+ end component;\r
+\r
+\r
+ component pciregs\r
+ generic (\r
+\r
+ vendorID : std_logic_vector(15 downto 0);\r
+ deviceID : std_logic_vector(15 downto 0);\r
+ revisionID : std_logic_vector(7 downto 0);\r
+ subsystemID : std_logic_vector(15 downto 0);\r
+ subsystemvID : std_logic_vector(15 downto 0);\r
+ jcarr1ID : std_logic_vector(31 downto 0);\r
+ jcarr2ID : std_logic_vector(31 downto 0);\r
+ jcarr3ID : std_logic_vector(31 downto 0);\r
+ jcarr4ID : std_logic_vector(31 downto 0);\r
+ jcarr5ID : std_logic_vector(31 downto 0);\r
+ jcarr6ID : std_logic_vector(31 downto 0);\r
+ jcarr7ID : std_logic_vector(31 downto 0);\r
+ jcarr8ID : std_logic_vector(31 downto 0);\r
+ jcarr9ID : std_logic_vector(31 downto 0);\r
+ jcarr10ID : std_logic_vector(31 downto 0);\r
+ jcarr11ID : std_logic_vector(31 downto 0);\r
+ jcarr12ID : std_logic_vector(31 downto 0);\r
+ jcarr13ID : std_logic_vector(31 downto 0);\r
+ jcarr14ID : std_logic_vector(31 downto 0);\r
+ jcarr15ID : std_logic_vector(31 downto 0);\r
+ jcarr16ID : std_logic_vector(31 downto 0);\r
+ jcarr17ID : std_logic_vector(31 downto 0);\r
+ jcarr18ID : std_logic_vector(31 downto 0);\r
+ jcarr19ID : std_logic_vector(31 downto 0);\r
+ jcarr20ID : std_logic_vector(31 downto 0);\r
+ jcarr21ID : std_logic_vector(31 downto 0);\r
+ jcarr22ID : std_logic_vector(31 downto 0);\r
+ jcarr23ID : std_logic_vector(31 downto 0);\r
+ jcarr24ID : std_logic_vector(31 downto 0);\r
+ jcarr25ID : std_logic_vector(31 downto 0);\r
+ jcarr26ID : std_logic_vector(31 downto 0);\r
+ jcarr27ID : std_logic_vector(31 downto 0);\r
+ jcarr28ID : std_logic_vector(31 downto 0);\r
+ jcarr29ID : std_logic_vector(31 downto 0);\r
+ jcarr30ID : std_logic_vector(31 downto 0);\r
+ jcarr31ID : std_logic_vector(31 downto 0);\r
+ jcarr32ID : std_logic_vector(31 downto 0);\r
+ jcarr33ID : std_logic_vector(31 downto 0);\r
+ jcarr34ID : std_logic_vector(31 downto 0);\r
+ jcarr35ID : std_logic_vector(31 downto 0);\r
+ jcarr36ID : std_logic_vector(31 downto 0);\r
+ jcarr37ID : std_logic_vector(31 downto 0);\r
+ jcarr38ID : std_logic_vector(31 downto 0);\r
+ jcarr39ID : std_logic_vector(31 downto 0);\r
+ jcarr40ID : std_logic_vector(31 downto 0);\r
+ jcarr41ID : std_logic_vector(31 downto 0);\r
+ jcarr42ID : std_logic_vector(31 downto 0)\r
+\r
+ );\r
+ port (\r
+ \r
+ clk_i : in std_logic;\r
+ nrst_i : in std_logic;\r
+ --\r
+ adr_i : in std_logic_vector(7 downto 2);\r
+ cbe_i : in std_logic_vector(3 downto 0);\r
+ dat_i : in std_logic_vector(31 downto 0);\r
+ dat_o : out std_logic_vector(31 downto 0);\r
+ wrcfg_i : in std_logic;\r
+ rdcfg_i : in std_logic;\r
+ perr_i : in std_logic;\r
+ serr_i : in std_logic;\r
+ tabort_i : in std_logic;\r
+ bar0_o : out std_logic_vector(31 downto 25);\r
+ perrEN_o : out std_logic;\r
+ serrEN_o : out std_logic;\r
+ memEN_o : out std_logic\r
+ \r
+ );\r
+ end component;\r
+\r
+\r
+ component pcipargen\r
+ port (\r
+\r
+ clk_i : in std_logic;\r
+ pcidatout_i : in std_logic_vector(31 downto 0);\r
+ cbe_i : in std_logic_vector(3 downto 0);\r
+ parOE_i : in std_logic;\r
+ par_o : out std_logic\r
+ \r
+ ); \r
+ end component;\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| CONSTANTS |\r
+--+-----------------------------------------------------------------------------+\r
+--+-----------------------------------------------------------------------------+\r
+--| SIGNALS |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+ signal bar0 : std_logic_vector(31 downto 25);\r
+ signal memEN : std_logic;\r
+ signal pciadrLD : std_logic;\r
+ signal adrcfg : std_logic;\r
+ signal adrmem : std_logic;\r
+ signal adr : std_logic_vector(24 downto 1);\r
+ signal cmd : std_logic_vector(3 downto 0);\r
+ signal pcidOE : std_logic;\r
+ signal parOE : std_logic; \r
+ signal wbdatLD : std_logic;\r
+ signal wbrgdMX : std_logic;\r
+ signal wbd16MX : std_logic;\r
+ signal wrcfg : std_logic;\r
+ signal rdcfg : std_logic;\r
+ signal pcidatread : std_logic_vector(31 downto 0);\r
+ signal pcidatwrite : std_logic_vector(31 downto 0);\r
+ signal pcidatout : std_logic_vector(31 downto 0); \r
+ signal parerr : std_logic;\r
+ signal syserr : std_logic;\r
+ signal tabort : std_logic;\r
+ signal perrEN : std_logic;\r
+ signal serrEN : std_logic;\r
+ \r
+begin\r
+\r
+\r
+ --+-------------------------------------------------------------------------+\r
+ --| Component instances |\r
+ --+-------------------------------------------------------------------------+\r
+\r
+ --+-----------------------------------------+\r
+ --| PCI decoder |\r
+ --+-----------------------------------------+\r
+\r
+ u1: component pcidec_new\r
+ port map (\r
+\r
+ clk_i => clk33,\r
+ nrst_i => nrst,\r
+ --\r
+ ad_i => ad,\r
+ cbe_i => cbe,\r
+ idsel_i => idsel,\r
+ bar0_i => bar0,\r
+ memEN_i => memEN,\r
+ pciadrLD_i => pciadrLD, \r
+ adrcfg_o => adrcfg,\r
+ adrmem_o => adrmem,\r
+ adr_o => adr,\r
+ cmd_o => cmd\r
+ \r
+ );\r
+\r
+\r
+ --+-----------------------------------------+\r
+ --| PCI-WB Sequencer |\r
+ --+-----------------------------------------+\r
+\r
+ u2: component pciwbsequ \r
+ port map (\r
+\r
+ -- General \r
+ clk_i => clk33, \r
+ nrst_i => nrst,\r
+ -- pci \r
+ cmd_i => cmd,\r
+ cbe_i => cbe,\r
+ frame_i => frame,\r
+ irdy_i => irdy, \r
+ devsel_o => devsel,\r
+ trdy_o => trdy, \r
+ -- control\r
+ adrcfg_i => adrcfg,\r
+ adrmem_i => adrmem,\r
+ pciadrLD_o => pciadrLD,\r
+ pcidOE_o => pcidOE,\r
+ parOE_o => parOE, \r
+ wbdatLD_o => wbdatLD,\r
+ wbrgdMX_o => wbrgdMX,\r
+ wbd16MX_o => wbd16MX,\r
+ wrcfg_o => wrcfg,\r
+ rdcfg_o => rdcfg,\r
+ -- whisbone\r
+ wb_sel_o => wb_sel_o,\r
+ wb_we_o => wb_we_o,\r
+ wb_stb_o => wb_stb_o,\r
+ wb_cyc_o => wb_cyc_o,\r
+ wb_ack_i => wb_ack_i,\r
+ wb_err_i => wb_err_i,\r
+ -- debug signals\r
+ debug_init => debug_init, \r
+ debug_access => debug_access\r
+ );\r
+ \r
+\r
+ --+-----------------------------------------+\r
+ --| PCI-wb datamultiplexer |\r
+ --+-----------------------------------------+\r
+\r
+ u3: component pcidmux\r
+ port map (\r
+\r
+ clk_i => clk33,\r
+ nrst_i => nrst,\r
+ --\r
+ d_io => ad, \r
+ pcidatout_o => pcidatout, \r
+ pcidOE_i => pcidOE,\r
+ wbdatLD_i => wbdatLD,\r
+ wbrgdMX_i => wbrgdMX,\r
+ wbd16MX_i => wbd16MX,\r
+ wb_dat_i => wb_dat_i,\r
+ wb_dat_o => wb_dat_o,\r
+ rg_dat_i => pcidatread,\r
+ rg_dat_o => pcidatwrite\r
+ \r
+ );\r
+\r
+\r
+ --+-----------------------------------------+\r
+ --| PCI registers |\r
+ --+-----------------------------------------+\r
+\r
+ u4: component pciregs\r
+ generic map (\r
+\r
+ vendorID => vendorID,\r
+ deviceID => deviceID,\r
+ revisionID => revisionID,\r
+ subsystemID => subsystemID,\r
+ subsystemvID => subsystemvID,\r
+ jcarr1ID => jcarr1ID,\r
+ jcarr2ID => jcarr2ID,\r
+ jcarr3ID => jcarr3ID,\r
+ jcarr4ID => jcarr4ID,\r
+ jcarr5ID => jcarr5ID,\r
+ jcarr6ID => jcarr6ID,\r
+ jcarr7ID => jcarr7ID,\r
+ jcarr8ID => jcarr8ID,\r
+ jcarr9ID => jcarr9ID,\r
+ jcarr10ID => jcarr10ID,\r
+ jcarr11ID => jcarr11ID,\r
+ jcarr12ID => jcarr12ID,\r
+ jcarr13ID => jcarr13ID,\r
+ jcarr14ID => jcarr14ID,\r
+ jcarr15ID => jcarr15ID,\r
+ jcarr16ID => jcarr16ID,\r
+ jcarr17ID => jcarr17ID,\r
+ jcarr18ID => jcarr18ID,\r
+ jcarr19ID => jcarr19ID,\r
+ jcarr20ID => jcarr20ID,\r
+ jcarr21ID => jcarr21ID,\r
+ jcarr22ID => jcarr22ID,\r
+ jcarr23ID => jcarr23ID,\r
+ jcarr24ID => jcarr24ID,\r
+ jcarr25ID => jcarr25ID,\r
+ jcarr26ID => jcarr26ID,\r
+ jcarr27ID => jcarr27ID,\r
+ jcarr28ID => jcarr28ID,\r
+ jcarr29ID => jcarr29ID,\r
+ jcarr30ID => jcarr30ID,\r
+ jcarr31ID => jcarr31ID,\r
+ jcarr32ID => jcarr32ID,\r
+ jcarr33ID => jcarr33ID,\r
+ jcarr34ID => jcarr34ID,\r
+ jcarr35ID => jcarr35ID,\r
+ jcarr36ID => jcarr36ID,\r
+ jcarr37ID => jcarr37ID,\r
+ jcarr38ID => jcarr38ID,\r
+ jcarr39ID => jcarr39ID,\r
+ jcarr40ID => jcarr40ID,\r
+ jcarr41ID => jcarr41ID,\r
+ jcarr42ID => jcarr42ID\r
+\r
+ )\r
+ port map (\r
+\r
+ clk_i => clk33,\r
+ nrst_i => nrst,\r
+ --\r
+ adr_i => adr(7 downto 2),\r
+ cbe_i => cbe,\r
+ dat_i => pcidatwrite,\r
+ dat_o => pcidatread,\r
+ wrcfg_i => wrcfg,\r
+ rdcfg_i => rdcfg,\r
+ perr_i => parerr,\r
+ serr_i => syserr,\r
+ tabort_i => tabort,\r
+ bar0_o => bar0,\r
+ perrEN_o => perrEN,\r
+ serrEN_o => serrEN,\r
+ memEN_o => memEN\r
+ \r
+ );\r
+ \r
+ --+-----------------------------------------+\r
+ --| PCI Parity Gnerator |\r
+ --+-----------------------------------------+\r
+\r
+ u5: component pcipargen\r
+ port map (\r
+\r
+ clk_i => clk33,\r
+ pcidatout_i => pcidatout, \r
+ cbe_i => cbe,\r
+ parOE_i => parOE, \r
+ par_o => par\r
+ \r
+ );\r
+\r
+\r
+ --+-----------------------------------------+\r
+ --| Whisbone Address bus |\r
+ --+-----------------------------------------+\r
+ \r
+ wb_adr_o <= adr;\r
+\r
+\r
+ --+-----------------------------------------+\r
+ --| unimplemented |\r
+ --+-----------------------------------------+\r
+\r
+ parerr <= '0';\r
+ syserr <= '0';\r
+ tabort <= '0';\r
+\r
+\r
+ --+-----------------------------------------+\r
+ --| unused outputs |\r
+ --+-----------------------------------------+\r
+ -- #stop: Curret TARGET indicates to Master stop current transaction\r
+ -- #perr:\r
+ -- #serr:\r
+ \r
+ perr <= 'Z';\r
+ serr <= 'Z';\r
+ stop <= 'Z';\r
+ intb <= '0' when ( wb_int_i = '1' ) else 'Z';\r
+\r
+ \r
+end rtl;\r
+\r
+\r
--- /dev/null
+--+-------------------------------------------------------------------------------------------------+\r
+--| |\r
+--| File: pciregs.vhd |\r
+--| |\r
+--| Project: pci32tlite_oc |\r
+--| |\r
+--| Description: Registros PCI |\r
+--| BAR0 is used externally by decoder. |\r
+--| |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| | PCI CONFIGURATION SPACE REGISTERS | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | REGISTER | adr(7..2) | offset | Byte Enable | Size | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | VENDORID | 000000 (r) | 00 | 0/1 | 2 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | DERVICEID | 000000 (r) | 02 | 2/3 | 2 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | CMD | 000001 (r/w) | 04 | 0/1 | 2 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | ST | 000001 (r/w*)| 06 | 2/3 | 2 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | REVISIONID | 000010 (r) | 08 | 0 | 1 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | CLASSCODE | 000010 (r) | 09 | 1/2/3 | 3 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | HEADERTYPE | 000011 (r) | 0E | 2 | 1 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | BAR0 | 000100 (r/w) | 10 | 0/1/2/3 | 4 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | SUBSYSTEMID | 001011 (r) | 2C | 0/1 | 2 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | SUBSYSTEMVID | 001011 (r) | 2E | 0/1 | 2 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | INTLINE | 001111 (r/w) | 3C | 0 | 1 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| | INTPIN | 001111 (r) | 3D | 1 | 1 | |\r
+--| +-------------------------------------------------------------------+ |\r
+--| (w*) Reseteable |\r
+--| |\r
+--| +-----------------------------------------------+ |\r
+--| | VENDORID (r) Vendor ID register | |\r
+--| +-----------------------------------------------+-----------------------+ |\r
+--| | Identifies manufacturer of device. | |\r
+--| | VENDORIDr : vendorID (generic) | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| |\r
+--| +-----------------------------------------------+ |\r
+--| | DEVICEID (r) Device ID register | |\r
+--| +-----------------------------------------------+-----------------------+ |\r
+--| | Identifies the device. | |\r
+--| | DEVICEIDr : deviceID (generic) | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| |\r
+--| +-----------------------------------------------+ |\r
+--| | CMD (r/w) CoMmanD register | |\r
+--| +-----------------------------------------------+----------------------------+ |\r
+--| | 0 | 0 | 0 | 0 | 0 | 0 | 0 | SERRENb| (15-8) |\r
+--| +----------------------------------------------------------------------------+ |\r
+--| | 0 | PERRENb| 0 | 0 | 0 | 0 |MEMSPACEENb| 0 | (7-0) |\r
+--| +----------------------------------------------------------------------------+ |\r
+--| | SERRENb : System ERRor ENable (1 = Enabled) | |\r
+--| | PERRENb : Parity ERRor ENable (1 = Enabled) | |\r
+--| | MEMSPACEENb : MEMmory SPACE ENable (1 = Enabled) | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| |\r
+--| +-----------------------------------------------+ |\r
+--| | ST (r/w*) STatus register | |\r
+--| +-----------------------------------------------+-------------------------+ |\r
+--| | PERRDTb | SERRSIb| -- | -- |TABORTSIb| DEVSELTIMb(1..0)| -- | (15-8) |\r
+--| +-------------------------------------------------------------------------+ |\r
+--| | -- | -- | -- | -- | -- | -- | -- | -- | (7-0) |\r
+--| +-------------------------------------------------------------------------+ |\r
+--| | PERRDTb : Parity ERRor DeTected | |\r
+--| | SERRSIb : System ERRor SIgnaled | |\r
+--| | TABORTSIb : Target ABORT SIgnaled | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| |\r
+--| +-----------------------------------------------+ |\r
+--| | REVISIONID (r) Revision ID register | |\r
+--| +-----------------------------------------------+-----------------------+ |\r
+--| | Identifies a device revision. | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| +-----------------------------------------------+ |\r
+--| | CLASSCODE (r) CLASS CODE register | |\r
+--| +-----------------------------------------------+-----------------------+ |\r
+--| | Identifies the generic funtion of the device. | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| +-----------------------------------------------+ |\r
+--| | HEADERTYPE (r) Header Type register | |\r
+--| +-----------------------------------------------+-----------------------+ |\r
+--| | Identifies the layout of the second part of the predefined header. | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| |\r
+--| +-----------------------------------------------+ |\r
+--| | BAR0 (r/w) Base AddRess 0 register | |\r
+--| +-----------------------------------------------+-----------------------+ |\r
+--| | BAR032MBb(6..0) | -- | (31-24) |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| | BAR032MBb : Base Address 32MBytes decode space (7 bits) | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| |\r
+--| +-----------------------------------------------+ |\r
+--| | SUBSYSTEMVID (r) SUBSYSTEM Vendor ID register | |\r
+--| +-----------------------------------------------+-----------------------+ |\r
+--| | Identifies vendor of add-in board or subsystem. | |\r
+--| | SUBSYSTEMVIDr : subsystemvID (generic) | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| |\r
+--| +-----------------------------------------------+ |\r
+--| | SUBSYSTEMID (r) SUBSYSTEM ID register | |\r
+--| +-----------------------------------------------+-----------------------+ |\r
+--| | Vendor specific. | |\r
+--| | SUBSYTEMIDr : subsytemID (generic) | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| |\r
+--| +-----------------------------------------------+ |\r
+--| | INTLINE (r/w) INTerrupt LINE register | |\r
+--| +-----------------------------------------------+-----------------------+ |\r
+--| | INTLINEr(7..0) | (7..0) |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| | Interrupt Line routing information | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| |\r
+--| +-----------------------------------------------+ |\r
+--| | INTPIN (r) INTerrupt PIN register | |\r
+--| +-----------------------------------------------+-----------------------+ |\r
+--| | Tells which interrupt pin the device uses: 01=INTA | |\r
+--| +-----------------------------------------------------------------------+ |\r
+--| |\r
+--+-------------------------------------------------------------------------------------------------+\r
+--| |\r
+--| Revision history : |\r
+--| Date Version Author Description |\r
+--| 2005-05-13 R00A00 PAU First alfa revision (eng) |\r
+--| |\r
+--| To do: |\r
+--| |\r
+--+-------------------------------------------------------------------------------------------------+\r
+--+-----------------------------------------------------------------+\r
+--| |\r
+--| Copyright (C) 2005 Peio Azkarate, peio@opencores.org | \r
+--| |\r
+--| This source file may be used and distributed without |\r
+--| restriction provided that this copyright statement is not |\r
+--| removed from the file and that any derivative work contains |\r
+--| the original copyright notice and the associated disclaimer. |\r
+--| |\r
+--| This source file is free software; you can redistribute it |\r
+--| and/or modify it under the terms of the GNU Lesser General |\r
+--| Public License as published by the Free Software Foundation; |\r
+--| either version 2.1 of the License, or (at your option) any |\r
+--| later version. |\r
+--| |\r
+--| This source is distributed in the hope that it will be |\r
+--| useful, but WITHOUT ANY WARRANTY; without even the implied |\r
+--| warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |\r
+--| PURPOSE. See the GNU Lesser General Public License for more |\r
+--| details. |\r
+--| |\r
+--| You should have received a copy of the GNU Lesser General |\r
+--| Public License along with this source; if not, download it |\r
+--| from http://www.opencores.org/lgpl.shtml |\r
+--| |\r
+--+-----------------------------------------------------------------+ \r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| LIBRARIES |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+library ieee;\r
+use ieee.std_logic_1164.all;\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| ENTITY |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+entity pciregs is\r
+generic (\r
+\r
+ vendorID : std_logic_vector(15 downto 0);\r
+ deviceID : std_logic_vector(15 downto 0);\r
+ revisionID : std_logic_vector(7 downto 0);\r
+ subsystemID : std_logic_vector(15 downto 0);\r
+ subsystemvID : std_logic_vector(15 downto 0);\r
+ jcarr1ID : std_logic_vector(31 downto 0);\r
+ jcarr2ID : std_logic_vector(31 downto 0);\r
+ jcarr3ID : std_logic_vector(31 downto 0);\r
+ jcarr4ID : std_logic_vector(31 downto 0);\r
+ jcarr5ID : std_logic_vector(31 downto 0);\r
+ jcarr6ID : std_logic_vector(31 downto 0);\r
+ jcarr7ID : std_logic_vector(31 downto 0);\r
+ jcarr8ID : std_logic_vector(31 downto 0);\r
+ jcarr9ID : std_logic_vector(31 downto 0);\r
+ jcarr10ID : std_logic_vector(31 downto 0);\r
+ jcarr11ID : std_logic_vector(31 downto 0);\r
+ jcarr12ID : std_logic_vector(31 downto 0);\r
+ jcarr13ID : std_logic_vector(31 downto 0);\r
+ jcarr14ID : std_logic_vector(31 downto 0);\r
+ jcarr15ID : std_logic_vector(31 downto 0);\r
+ jcarr16ID : std_logic_vector(31 downto 0);\r
+ jcarr17ID : std_logic_vector(31 downto 0);\r
+ jcarr18ID : std_logic_vector(31 downto 0);\r
+ jcarr19ID : std_logic_vector(31 downto 0);\r
+ jcarr20ID : std_logic_vector(31 downto 0);\r
+ jcarr21ID : std_logic_vector(31 downto 0);\r
+ jcarr22ID : std_logic_vector(31 downto 0);\r
+ jcarr23ID : std_logic_vector(31 downto 0);\r
+ jcarr24ID : std_logic_vector(31 downto 0);\r
+ jcarr25ID : std_logic_vector(31 downto 0);\r
+ jcarr26ID : std_logic_vector(31 downto 0);\r
+ jcarr27ID : std_logic_vector(31 downto 0);\r
+ jcarr28ID : std_logic_vector(31 downto 0);\r
+ jcarr29ID : std_logic_vector(31 downto 0);\r
+ jcarr30ID : std_logic_vector(31 downto 0);\r
+ jcarr31ID : std_logic_vector(31 downto 0);\r
+ jcarr32ID : std_logic_vector(31 downto 0);\r
+ jcarr33ID : std_logic_vector(31 downto 0);\r
+ jcarr34ID : std_logic_vector(31 downto 0);\r
+ jcarr35ID : std_logic_vector(31 downto 0);\r
+ jcarr36ID : std_logic_vector(31 downto 0);\r
+ jcarr37ID : std_logic_vector(31 downto 0);\r
+ jcarr38ID : std_logic_vector(31 downto 0);\r
+ jcarr39ID : std_logic_vector(31 downto 0);\r
+ jcarr40ID : std_logic_vector(31 downto 0);\r
+ jcarr41ID : std_logic_vector(31 downto 0);\r
+ jcarr42ID : std_logic_vector(31 downto 0)\r
+\r
+);\r
+port (\r
+\r
+ -- General \r
+ clk_i : in std_logic;\r
+ nrst_i : in std_logic;\r
+ -- \r
+ adr_i : in std_logic_vector(5 downto 0);\r
+ cbe_i : in std_logic_vector(3 downto 0);\r
+ dat_i : in std_logic_vector(31 downto 0);\r
+ dat_o : out std_logic_vector(31 downto 0);\r
+ --\r
+ wrcfg_i : in std_logic;\r
+ rdcfg_i : in std_logic;\r
+ perr_i : in std_logic;\r
+ serr_i : in std_logic;\r
+ tabort_i : in std_logic;\r
+ --\r
+ bar0_o : out std_logic_vector(31 downto 25);\r
+ perrEN_o : out std_logic;\r
+ serrEN_o : out std_logic;\r
+ memEN_o : out std_logic\r
+ \r
+); \r
+end pciregs;\r
+\r
+\r
+architecture rtl of pciregs is\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| COMPONENTS |\r
+--+-----------------------------------------------------------------------------+\r
+--+-----------------------------------------------------------------------------+\r
+--| CONSTANTS |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+ constant CLASSCODEr : std_logic_vector(23 downto 0) := X"028000"; -- Bridge-OtherBridgeDevice\r
+ constant REVISIONIDr : std_logic_vector(7 downto 0) := revisionID; -- PR00=80,PR1=81...\r
+ constant HEADERTYPEr : std_logic_vector(7 downto 0) := X"00"; \r
+ constant DEVSELTIMb : std_logic_vector(1 downto 0) := b"01"; -- DEVSEL TIMing (bits) medium speed\r
+ constant VENDORIDr : std_logic_vector(15 downto 0) := vendorID; \r
+ constant DEVICEIDr : std_logic_vector(15 downto 0) := deviceID; \r
+ constant SUBSYSTEMIDr : std_logic_vector(15 downto 0) := subsystemID; \r
+ constant SUBSYSTEMVIDr : std_logic_vector(15 downto 0) := subsystemvID; \r
+ constant JCARR1IDr : std_logic_vector(31 downto 0) := jcarr1ID;\r
+ constant JCARR2IDr : std_logic_vector(31 downto 0) := jcarr2ID;\r
+ constant JCARR3IDr : std_logic_vector(31 downto 0) := jcarr3ID;\r
+ constant JCARR4IDr : std_logic_vector(31 downto 0) := jcarr4ID;\r
+ constant JCARR5IDr : std_logic_vector(31 downto 0) := jcarr5ID;\r
+ constant JCARR6IDr : std_logic_vector(31 downto 0) := jcarr6ID;\r
+ constant JCARR7IDr : std_logic_vector(31 downto 0) := jcarr7ID;\r
+ constant JCARR8IDr : std_logic_vector(31 downto 0) := jcarr8ID;\r
+ constant JCARR9IDr : std_logic_vector(31 downto 0) := jcarr9ID;\r
+ constant JCARR10IDr : std_logic_vector(31 downto 0) := jcarr10ID;\r
+ constant JCARR11IDr : std_logic_vector(31 downto 0) := jcarr11ID;\r
+ constant JCARR12IDr : std_logic_vector(31 downto 0) := jcarr12ID;\r
+ constant JCARR13IDr : std_logic_vector(31 downto 0) := jcarr13ID;\r
+ constant JCARR14IDr : std_logic_vector(31 downto 0) := jcarr14ID;\r
+ constant JCARR15IDr : std_logic_vector(31 downto 0) := jcarr15ID;\r
+ constant JCARR16IDr : std_logic_vector(31 downto 0) := jcarr16ID;\r
+ constant JCARR17IDr : std_logic_vector(31 downto 0) := jcarr17ID;\r
+ constant JCARR18IDr : std_logic_vector(31 downto 0) := jcarr18ID;\r
+ constant JCARR19IDr : std_logic_vector(31 downto 0) := jcarr19ID;\r
+ constant JCARR20IDr : std_logic_vector(31 downto 0) := jcarr20ID;\r
+ constant JCARR21IDr : std_logic_vector(31 downto 0) := jcarr21ID;\r
+ constant JCARR22IDr : std_logic_vector(31 downto 0) := jcarr22ID;\r
+ constant JCARR23IDr : std_logic_vector(31 downto 0) := jcarr23ID;\r
+ constant JCARR24IDr : std_logic_vector(31 downto 0) := jcarr24ID;\r
+ constant JCARR25IDr : std_logic_vector(31 downto 0) := jcarr25ID;\r
+ constant JCARR26IDr : std_logic_vector(31 downto 0) := jcarr26ID;\r
+ constant JCARR27IDr : std_logic_vector(31 downto 0) := jcarr27ID;\r
+ constant JCARR28IDr : std_logic_vector(31 downto 0) := jcarr28ID;\r
+ constant JCARR29IDr : std_logic_vector(31 downto 0) := jcarr29ID;\r
+ constant JCARR30IDr : std_logic_vector(31 downto 0) := jcarr30ID;\r
+ constant JCARR31IDr : std_logic_vector(31 downto 0) := jcarr31ID;\r
+ constant JCARR32IDr : std_logic_vector(31 downto 0) := jcarr32ID;\r
+ constant JCARR33IDr : std_logic_vector(31 downto 0) := jcarr33ID;\r
+ constant JCARR34IDr : std_logic_vector(31 downto 0) := jcarr34ID;\r
+ constant JCARR35IDr : std_logic_vector(31 downto 0) := jcarr35ID;\r
+ constant JCARR36IDr : std_logic_vector(31 downto 0) := jcarr36ID;\r
+ constant JCARR37IDr : std_logic_vector(31 downto 0) := jcarr37ID;\r
+ constant JCARR38IDr : std_logic_vector(31 downto 0) := jcarr38ID;\r
+ constant JCARR39IDr : std_logic_vector(31 downto 0) := jcarr39ID;\r
+ constant JCARR40IDr : std_logic_vector(31 downto 0) := jcarr40ID;\r
+ constant JCARR41IDr : std_logic_vector(31 downto 0) := jcarr41ID;\r
+ constant JCARR42IDr : std_logic_vector(31 downto 0) := jcarr42ID;\r
+ constant INTPINr : std_logic_vector(7 downto 0) := X"01"; -- INTA#\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| SIGNALS |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+ signal dataout : std_logic_vector(31 downto 0);\r
+ signal tabortPFS : std_logic;\r
+ signal serrPFS : std_logic;\r
+ signal perrPFS : std_logic;\r
+ signal adrSTCMD : std_logic;\r
+ signal adrBAR0 : std_logic;\r
+ signal adrINT : std_logic;\r
+ signal we0CMD : std_logic;\r
+ signal we1CMD : std_logic;\r
+ signal we3ST : std_logic;\r
+ signal we3BAR0 : std_logic;\r
+ signal we0INT : std_logic;\r
+ signal we1INT : std_logic;\r
+ signal st11SEN : std_logic;\r
+ signal st11REN : std_logic;\r
+ signal st14SEN : std_logic;\r
+ signal st14REN : std_logic;\r
+ signal st15SEN : std_logic;\r
+ signal st15REN : std_logic;\r
+\r
+\r
+ --+---------------------------------------------------------+\r
+ --| CONFIGURATION SPACE REGISTERS |\r
+ --+---------------------------------------------------------+\r
+\r
+ -- INTERRUPT LINE register \r
+ signal INTLINEr : std_logic_vector(7 downto 0);\r
+ -- COMMAND register bits\r
+ signal MEMSPACEENb : std_logic; -- Memory SPACE ENable (bit)\r
+ signal PERRENb : std_logic; -- Parity ERRor ENable (bit)\r
+ signal SERRENb : std_logic; -- SERR ENable (bit)\r
+ -- STATUS register bits\r
+ --signal DEVSELTIMb : std_logic_vector(1 downto 0); -- DEVSEL TIMing (bits)\r
+ signal TABORTSIb : std_logic; -- TarGet ABORT SIgnaling (bit)\r
+ signal SERRSIb : std_logic; -- System ERRor SIgnaling (bit)\r
+ signal PERRDTb : std_logic; -- Parity ERRor DeTected (bit)\r
+ -- BAR0 register bits\r
+ signal BAR032MBb : std_logic_vector(6 downto 0); -- BAR0 32MBytes Space (bits)\r
+ \r
+\r
+component pfs\r
+port (\r
+ clk : in std_logic;\r
+ a : in std_logic;\r
+ y : out std_logic\r
+); \r
+\r
+end component;\r
+\r
+begin\r
+\r
+ --+-------------------------------------------------------------------------+\r
+ --| Component instances |\r
+ --+-------------------------------------------------------------------------+\r
+\r
+ u1: pfs port map ( clk => clk_i, a => tabort_i, y => tabortPFS );\r
+ u2: pfs port map ( clk => clk_i, a => serr_i, y => serrPFS );\r
+ u3: pfs port map ( clk => clk_i, a => perr_i, y => perrPFS );\r
+ \r
+\r
+ --+-------------------------------------------------------------------------+\r
+ --| Registers Address Decoder |\r
+ --+-------------------------------------------------------------------------+\r
+\r
+ adrSTCMD <= '1' when ( adr_i(5 downto 0) = b"000001" ) else '0';\r
+ adrBAR0 <= '1' when ( adr_i(5 downto 0) = b"000100" ) else '0';\r
+ adrINT <= '1' when ( adr_i(5 downto 0) = b"001111" ) else '0';\r
+\r
+\r
+ --+-------------------------------------------------------------------------+\r
+ --| WRITE ENABLE REGISTERS |\r
+ --+-------------------------------------------------------------------------+\r
+\r
+ --+-----------------------------------------+\r
+ --| Write Enable Registers |\r
+ --+-----------------------------------------+\r
+ \r
+ we0CMD <= adrSTCMD and wrcfg_i and (not cbe_i(0));\r
+ we1CMD <= adrSTCMD and wrcfg_i and (not cbe_i(1));\r
+ --we2ST <= adrSTCMD and wrcfg_i and (not cbe_i(2));\r
+ we3ST <= adrSTCMD and wrcfg_i and (not cbe_i(3));\r
+ --we2BAR0 <= adrBAR0 and wrcfg_i and (not cbe_i(2));\r
+ we3BAR0 <= adrBAR0 and wrcfg_i and (not cbe_i(3));\r
+ we0INT <= adrINT and wrcfg_i and (not cbe_i(0));\r
+ --we1INT <= adrINT and wrcfg_i and (not cbe_i(1));\r
+\r
+ --+-----------------------------------------+\r
+ --| Set Enable & Reset Enable bits |\r
+ --+-----------------------------------------+\r
+ st11SEN <= tabortPFS; \r
+ st11REN <= we3ST and dat_i(27);\r
+ st14SEN <= serrPFS; \r
+ st14REN <= we3ST and dat_i(30);\r
+ st15SEN <= perrPFS; \r
+ st15REN <= we3ST and dat_i(31);\r
+\r
+\r
+ --+-------------------------------------------------------------------------+\r
+ --| WRITE REGISTERS |\r
+ --+-------------------------------------------------------------------------+\r
+\r
+ --+---------------------------------------------------------+\r
+ --| COMMAND REGISTER Write |\r
+ --+---------------------------------------------------------+\r
+\r
+ REGCMDWR: process( clk_i, nrst_i, we0CMD, we1CMD, dat_i )\r
+ begin\r
+\r
+ if( nrst_i = '0' ) then\r
+ MEMSPACEENb <= '0';\r
+ PERRENb <= '0';\r
+ SERRENb <= '0'; \r
+ elsif( rising_edge( clk_i ) ) then\r
+\r
+ -- Byte 0\r
+ if( we0CMD = '1' ) then\r
+ MEMSPACEENb <= dat_i(1);\r
+ PERRENb <= dat_i(6); \r
+ end if;\r
+ \r
+ -- Byte 1\r
+ if( we1CMD = '1' ) then\r
+ SERRENb <= dat_i(8); \r
+ end if;\r
+\r
+ end if;\r
+\r
+ end process REGCMDWR;\r
+\r
+\r
+ --+---------------------------------------------------------+\r
+ --| STATUS REGISTER WRITE (Reset only) |\r
+ --+---------------------------------------------------------+\r
+\r
+ REGSTWR: process( clk_i, nrst_i, st11SEN, st11REN, st14SEN, st14REN, st15SEN, st15REN )\r
+ begin\r
+\r
+ if( nrst_i = '0' ) then\r
+ TABORTSIb <= '0';\r
+ SERRSIb <= '0';\r
+ PERRDTb <= '0';\r
+ elsif( rising_edge( clk_i ) ) then\r
+\r
+ -- TarGet ABORT SIgnaling bit\r
+ if( st11SEN = '1' ) then\r
+ TABORTSIb <= '1';\r
+ elsif ( st11REN = '1' ) then\r
+ TABORTSIb <= '0'; \r
+ end if;\r
+\r
+ -- System ERRor SIgnaling bit\r
+ if( st14SEN = '1' ) then\r
+ SERRSIb <= '1';\r
+ elsif ( st14REN = '1' ) then\r
+ SERRSIb <= '0'; \r
+ end if;\r
+\r
+ -- Parity ERRor DEtected bit\r
+ if( st15SEN = '1' ) then\r
+ PERRDTb <= '1';\r
+ elsif ( st15REN = '1' ) then\r
+ PERRDTb <= '0'; \r
+ end if;\r
+ \r
+ end if;\r
+\r
+ end process REGSTWR;\r
+\r
+\r
+ --+---------------------------------------------------------+\r
+ --| INTERRUPT REGISTER Write |\r
+ --+---------------------------------------------------------+\r
+\r
+ REGINTWR: process( clk_i, nrst_i, we0INT, dat_i )\r
+ begin\r
+\r
+ if( nrst_i = '0' ) then\r
+ INTLINEr <= ( others => '0' );\r
+ elsif( rising_edge( clk_i ) ) then\r
+\r
+ -- Byte 0\r
+ if( we0INT = '1' ) then\r
+ INTLINEr <= dat_i(7 downto 0);\r
+ end if;\r
+ \r
+\r
+ end if;\r
+\r
+ end process REGINTWR;\r
+\r
+\r
+ --+---------------------------------------------------------+\r
+ --| BAR0 32MBytes address space (bits 31-25) |\r
+ --+---------------------------------------------------------+\r
+\r
+ REGBAR0WR: process( clk_i, nrst_i, we3BAR0, dat_i )\r
+ begin\r
+\r
+ if( nrst_i = '0' ) then\r
+ BAR032MBb <= ( others => '1' );\r
+ elsif( rising_edge( clk_i ) ) then\r
+\r
+ -- Byte 3\r
+ if( we3BAR0 = '1' ) then\r
+ BAR032MBb <= dat_i(31 downto 25);\r
+ end if;\r
+ \r
+ end if;\r
+\r
+ end process REGBAR0WR;\r
+\r
+\r
+ --+-------------------------------------------------------------------------+\r
+ --| Registers MUX (READ) |\r
+ --+-------------------------------------------------------------------------+\r
+--+-------------------------------------------------------------------------------------------------+\r
+\r
+ RRMUX: process( adr_i, PERRDTb, SERRSIb, TABORTSIb, SERRENb, PERRENb, MEMSPACEENb, BAR032MBb, \r
+ INTLINEr, rdcfg_i )\r
+ begin\r
+\r
+ if ( rdcfg_i = '1' ) then\r
+ \r
+ case adr_i is\r
+\r
+ when b"000000" => \r
+ dataout <= DEVICEIDr & VENDORIDr;\r
+ when b"000001" => \r
+ dataout <= PERRDTb & SERRSIb & b"00" & TABORTSIb & DEVSELTIMb & b"000000000" &\r
+ b"0000000" & SERRENb & b"0" & PERRENb & b"0000" & MEMSPACEENb & b"0";\r
+ when b"000010" => \r
+ dataout <= CLASSCODEr & REVISIONIDr;\r
+ when b"000100" => \r
+ dataout <= BAR032MBb & b"0" & b"00000000" & b"00000000" & b"00000000";\r
+ when b"001011" => \r
+ dataout <= SUBSYSTEMIDr & SUBSYSTEMVIDr;\r
+ when b"001111" => \r
+ dataout <= b"0000000000000000" & INTPINr & INTLINEr;\r
+ when b"010001" =>\r
+ dataout <= JCARR1IDr;\r
+ when b"010010" =>\r
+ dataout <= JCARR2IDr;\r
+ when b"010011" =>\r
+ dataout <= JCARR3IDr;\r
+ when b"010100" =>\r
+ dataout <= JCARR4IDr;\r
+ when b"010101" =>\r
+ dataout <= JCARR5IDr;\r
+ when b"010110" =>\r
+ dataout <= JCARR6IDr;\r
+ when b"010111" =>\r
+ dataout <= JCARR7IDr;\r
+ when b"011000" =>\r
+ dataout <= JCARR8IDr;\r
+ when b"011001" =>\r
+ dataout <= JCARR9IDr;\r
+ when b"011010" =>\r
+ dataout <= JCARR10IDr;\r
+ when b"011011" =>\r
+ dataout <= JCARR11IDr;\r
+ when b"011100" =>\r
+ dataout <= JCARR12IDr;\r
+ when b"011101" =>\r
+ dataout <= JCARR13IDr;\r
+ when b"011110" =>\r
+ dataout <= JCARR14IDr;\r
+ when b"011111" =>\r
+ dataout <= JCARR15IDr;\r
+ when b"100000" =>\r
+ dataout <= JCARR16IDr;\r
+ when b"100001" =>\r
+ dataout <= JCARR17IDr;\r
+ when b"100010" =>\r
+ dataout <= JCARR18IDr;\r
+ when b"100011" =>\r
+ dataout <= JCARR19IDr;\r
+ when b"100100" =>\r
+ dataout <= JCARR20IDr;\r
+ when b"100101" =>\r
+ dataout <= JCARR21IDr;\r
+ when b"100110" =>\r
+ dataout <= JCARR22IDr;\r
+ when b"100111" =>\r
+ dataout <= JCARR23IDr;\r
+ when b"101000" =>\r
+ dataout <= JCARR24IDr;\r
+ when b"101001" =>\r
+ dataout <= JCARR25IDr;\r
+ when b"101010" =>\r
+ dataout <= JCARR26IDr;\r
+ when b"101011" =>\r
+ dataout <= JCARR27IDr;\r
+ when b"101100" =>\r
+ dataout <= JCARR28IDr;\r
+ when b"101101" =>\r
+ dataout <= JCARR29IDr;\r
+ when b"101110" =>\r
+ dataout <= JCARR30IDr;\r
+ when b"101111" =>\r
+ dataout <= JCARR31IDr;\r
+ when b"110000" =>\r
+ dataout <= JCARR32IDr;\r
+ when b"110001" =>\r
+ dataout <= JCARR33IDr;\r
+ when b"110010" =>\r
+ dataout <= JCARR34IDr;\r
+ when b"110011" =>\r
+ dataout <= JCARR35IDr;\r
+ when b"110100" =>\r
+ dataout <= JCARR36IDr;\r
+ when b"110101" =>\r
+ dataout <= JCARR37IDr;\r
+ when b"110110" =>\r
+ dataout <= JCARR38IDr;\r
+ when b"110111" =>\r
+ dataout <= JCARR39IDr;\r
+ when b"111000" =>\r
+ dataout <= JCARR40IDr;\r
+ when b"111001" =>\r
+ dataout <= JCARR41IDr;\r
+ when b"111010" =>\r
+ dataout <= JCARR42IDr;\r
+ when others => \r
+ dataout <= ( others => '0' );\r
+\r
+ end case;\r
+ \r
+ else\r
+ \r
+ dataout <= ( others => '0' );\r
+ \r
+ end if;\r
+\r
+ end process RRMUX;\r
+\r
+ dat_o <= dataout;\r
+ \r
+ \r
+ --+-------------------------------------------------------------------------+\r
+ --| BAR0 & COMMAND REGS bits outputs |\r
+ --+-------------------------------------------------------------------------+\r
+ \r
+ bar0_o <= BAR032MBb;\r
+ perrEN_o <= PERRENb;\r
+ serrEN_o <= SERRENb; \r
+ memEN_o <= MEMSPACEENb;\r
+\r
+ \r
+end rtl;\r
--- /dev/null
+// Copyright (C) 2005 Peio Azkarate, peio@opencores.org\r
+// Copyright (C) 2006 Jeff Carr, jcarr@opencores.org\r
+// Copyleft GPL v2\r
+\r
+module pcidec_new (clk_i, nrst_i, ad_i, cbe_i, idsel_i, bar0_i, memEN_i,\r
+ pciadrLD_i, adrcfg_o, adrmem_o, adr_o, cmd_o);\r
+\r
+ // General \r
+ input clk_i;\r
+ input nrst_i;\r
+ // pci \r
+ input [31:0] ad_i;\r
+ input [3:0] cbe_i;\r
+ input idsel_i;\r
+ // control\r
+ input [31:25] bar0_i;\r
+ input memEN_i;\r
+ input pciadrLD_i;\r
+ output adrcfg_o;\r
+ output adrmem_o;\r
+ output [24:1] adr_o;\r
+ output [3:0] cmd_o;\r
+\r
+ reg [31:0] adr;\r
+ reg [3:0] cmd;\r
+ reg idsel_s;\r
+ wire a1;\r
+\r
+ //+-------------------------------------------------------------------------+\r
+ //| Load PCI Signals |\r
+ //+-------------------------------------------------------------------------+\r
+\r
+ always @( negedge nrst_i or posedge clk_i )\r
+ begin\r
+ if( nrst_i == 0 )\r
+ begin\r
+ adr <= 23'b1111_1111_1111_1111_1111_111;\r
+ cmd <= 3'b111;\r
+ idsel_s <= 1'b0;\r
+ end\r
+ else\r
+ if ( pciadrLD_i == 1 )\r
+ begin\r
+ adr <= ad_i;\r
+ cmd <= cbe_i;\r
+ idsel_s <= idsel_i;\r
+ end\r
+ end\r
+\r
+ assign adrmem_o = (\r
+ ( memEN_i == 1'b1 ) &&\r
+ ( adr [31:25] == bar0_i ) &&\r
+ ( adr [1:0] == 2'b00 ) &&\r
+ ( cmd [3:1] == 3'b011 )\r
+ ) ? 1'b1 : 1'b0;\r
+\r
+ assign adrcfg_o = (\r
+ ( idsel_s == 1'b1 ) &&\r
+ ( adr [1:0] == 2'b00 ) &&\r
+ ( cmd [3:1] == 3'b101 )\r
+ ) ? 1'b1 : 1'b0;\r
+\r
+ assign a1 = ~ ( cbe_i [3] && cbe_i [2] );\r
+ assign adr_o = {adr [24:2], a1};\r
+ assign cmd_o = cmd;\r
+\r
+endmodule\r
--- /dev/null
+// Copyright (C) 2005 Peio Azkarate, peio@opencores.org\r
+// Copyright (C) 2006 Jeff Carr, jcarr@opencores.org\r
+//\r
+// I think what this does is handle 16 vs 32 bit pci accesses\r
+\r
+module pcidmux ( clk_i, nrst_i, d_io, pcidatout_o, pcidOE_i, wbdatLD_i, wbrgdMX_i,\r
+ wbd16MX_i, wb_dat_i, wb_dat_o, rg_dat_i, rg_dat_o);\r
+\r
+ input clk_i;\r
+ input nrst_i;\r
+\r
+ // d_io : inout std_logic_vector(31 downto 0);\r
+ inout [31:0] d_io;\r
+ output [31:0] pcidatout_o;\r
+\r
+ input pcidOE_i;\r
+ input wbdatLD_i;\r
+ input wbrgdMX_i;\r
+ input wbd16MX_i;\r
+\r
+ input [15:0] wb_dat_i;\r
+ output [15:0] wb_dat_o;\r
+ input [31:0] rg_dat_i;\r
+ output [31:0] rg_dat_o;\r
+\r
+ wire [31:0] pcidatin;\r
+ wire [31:0] pcidatout;\r
+\r
+ reg [15:0] wb_dat_is;\r
+\r
+ // always @(negedge nrst_i or posedge clk_i or posedge wbdatLD_i or posedge wb_dat_i)\r
+ always @(negedge nrst_i or posedge clk_i)\r
+ begin\r
+ if ( nrst_i == 0 )\r
+ wb_dat_is <= 16'b1111_1111_1111_1111;\r
+ else\r
+ if ( wbdatLD_i == 1 )\r
+ wb_dat_is <= wb_dat_i;\r
+ end\r
+\r
+ assign pcidatin = d_io;\r
+ assign d_io = (pcidOE_i == 1'b1 ) ? pcidatout : 32'bZ;\r
+\r
+ assign pcidatout [31:24] = (wbrgdMX_i == 1'b1) ? wb_dat_is [7:0] : rg_dat_i [31:24];\r
+ assign pcidatout [23:16] = (wbrgdMX_i == 1'b1) ? wb_dat_is [15:8] : rg_dat_i [23:16];\r
+ assign pcidatout [15:8] = (wbrgdMX_i == 1'b1) ? wb_dat_is [7:0] : rg_dat_i [15:8];\r
+ assign pcidatout [7:0] = (wbrgdMX_i == 1'b1) ? wb_dat_is [15:8] : rg_dat_i [7:0];\r
+\r
+ assign pcidatout_o = pcidatout;\r
+ assign rg_dat_o = pcidatin;\r
+\r
+ assign wb_dat_o [15:8] = (wbd16MX_i == 1'b1) ? pcidatin [23:16] : pcidatin [7:0];\r
+ assign wb_dat_o [7:0] = (wbd16MX_i == 1'b1) ? pcidatin [31:24] : pcidatin [15:8];\r
+\r
+endmodule \r
--- /dev/null
+//\r
+// PCI Parity Generator.\r
+//\r
+// PCI Target generates PAR in the data phase of a read cycle. \r
+// The 1's sum on AD, CBE and PAR is even.\r
+//\r
+// Date Version Author Description\r
+// 2005-05-13 R00A00 PAU First alfa revision (eng)\r
+//\r
+// Copyright (C) 2005 Peio Azkarate, peio@opencores.org\r
+//\r
+// This source file is free software; you can redistribute it |\r
+// and/or modify it under the terms of the GNU Lesser General |\r
+// Public License as published by the Free Software Foundation; |\r
+// either version 2.1 of the License, or (at your option) any |\r
+// later version. |\r
+\r
+\r
+module pcipargen_new (clk_i, pcidatout_i, cbe_i, parOE_i, par_o);\r
+\r
+ input clk_i;\r
+ input [31:0] pcidatout_i;\r
+ input [3:0] cbe_i;\r
+ input parOE_i;\r
+ output par_o;\r
+\r
+\r
+ wire [31:0] d;\r
+ wire pardat;\r
+ wire parcbe;\r
+ wire par;\r
+ wire par_s;\r
+\r
+ assign d = pcidatout_i;\r
+\r
+ assign pardat = d[0] ^ d[1] ^ d[2] ^ d[3] ^ d[4] ^ d[5] ^ d[6] ^ d[7] ^ \r
+ d[8] ^ d[9] ^ d[10] ^ d[11] ^ d[12] ^ d[13] ^ d[14] ^ d[15] ^ \r
+ d[16] ^ d[17] ^ d[18] ^ d[19] ^ d[20] ^ d[21] ^ d[22] ^ d[23] ^ \r
+ d[24] ^ d[25] ^ d[26] ^ d[27] ^ d[28] ^ d[29] ^ d[30] ^ d[31];\r
+ \r
+ assign parcbe = cbe_i[0] ^ cbe_i[1] ^ cbe_i[2] ^ cbe_i[3]; \r
+\r
+ assign par = pardat ^ parcbe;\r
+\r
+ // PAR\r
+ assign par_o = ( parOE_i == 1 ) ? par_s : 1'bZ;\r
+\r
+endmodule\r
+/*\r
+component sync\r
+port (\r
+ clk : in std_logic;\r
+ d : in std_logic;\r
+ q : out std_logic\r
+);\r
+end component;\r
+\r
+component sync2\r
+port (\r
+ clk : in std_logic;\r
+ d : in std_logic;\r
+ q : out std_logic\r
+);\r
+end component;\r
+\r
+begin\r
+\r
+\r
+\r
+ u1: sync2 port map (\r
+ clk => clk_i,\r
+ d => par,\r
+ q => par_s\r
+ );\r
+ \r
+\r
+\r
+\r
+end rtl;\r
+*/\r
--- /dev/null
+--+-------------------------------------------------------------------------------------------------+\r
+--| |\r
+--| File: pcipargen.vhd |\r
+--| |\r
+--| Project: pci32tlite_oc |\r
+--| |\r
+--| Description: PCI Parity Generator. |\r
+--| PCI Target generates PAR in the data phase of a read cycle. The 1's sum on AD, |\r
+--| CBE and PAR is even. |\r
+--| |\r
+--+-------------------------------------------------------------------------------------------------+\r
+--| |\r
+--| Revision history : |\r
+--| Date Version Author Description |\r
+--| 2005-05-13 R00A00 PAU First alfa revision (eng) |\r
+--| |\r
+--| To do: |\r
+--| |\r
+--+-------------------------------------------------------------------------------------------------+\r
+--+-----------------------------------------------------------------+\r
+--| |\r
+--| Copyright (C) 2005 Peio Azkarate, peio@opencores.org | \r
+--| |\r
+--| This source file may be used and distributed without |\r
+--| restriction provided that this copyright statement is not |\r
+--| removed from the file and that any derivative work contains |\r
+--| the original copyright notice and the associated disclaimer. |\r
+--| |\r
+--| This source file is free software; you can redistribute it |\r
+--| and/or modify it under the terms of the GNU Lesser General |\r
+--| Public License as published by the Free Software Foundation; |\r
+--| either version 2.1 of the License, or (at your option) any |\r
+--| later version. |\r
+--| |\r
+--| This source is distributed in the hope that it will be |\r
+--| useful, but WITHOUT ANY WARRANTY; without even the implied |\r
+--| warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |\r
+--| PURPOSE. See the GNU Lesser General Public License for more |\r
+--| details. |\r
+--| |\r
+--| You should have received a copy of the GNU Lesser General |\r
+--| Public License along with this source; if not, download it |\r
+--| from http://www.opencores.org/lgpl.shtml |\r
+--| |\r
+--+-----------------------------------------------------------------+ \r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| LIBRARIES |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+library ieee;\r
+use ieee.std_logic_1164.all;\r
+\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| ENTITY |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+entity pcipargen is\r
+port (\r
+\r
+ clk_i : in std_logic;\r
+ pcidatout_i : in std_logic_vector(31 downto 0);\r
+ cbe_i : in std_logic_vector(3 downto 0);\r
+ parOE_i : in std_logic;\r
+ par_o : out std_logic\r
+ \r
+); \r
+end pcipargen;\r
+\r
+\r
+architecture rtl of pcipargen is\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| COMPONENTS |\r
+--+-----------------------------------------------------------------------------+\r
+--+-----------------------------------------------------------------------------+\r
+--| CONSTANTS |\r
+--+-----------------------------------------------------------------------------+\r
+--+-----------------------------------------------------------------------------+\r
+--| SIGNALS |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+ signal d : std_logic_vector(31 downto 0);\r
+ signal pardat : std_logic;\r
+ signal parcbe : std_logic;\r
+ signal par : std_logic;\r
+ signal par_s : std_logic;\r
+\r
+component sync\r
+port (\r
+ clk : in std_logic;\r
+ d : in std_logic;\r
+ q : out std_logic\r
+);\r
+end component;\r
+\r
+component sync2\r
+port (\r
+ clk : in std_logic;\r
+ d : in std_logic;\r
+ q : out std_logic\r
+);\r
+end component;\r
+\r
+begin\r
+\r
+\r
+ d <= pcidatout_i;\r
+\r
+ \r
+ --+-------------------------------------------------------------------------+\r
+ --| building parity |\r
+ --+-------------------------------------------------------------------------+\r
+ \r
+ pardat <= d(0) xor d(1) xor d(2) xor d(3) xor d(4) xor d(5) xor d(6) xor d(7) xor \r
+ d(8) xor d(9) xor d(10) xor d(11) xor d(12) xor d(13) xor d(14) xor d(15) xor \r
+ d(16) xor d(17) xor d(18) xor d(19) xor d(20) xor d(21) xor d(22) xor d(23) xor \r
+ d(24) xor d(25) xor d(26) xor d(27) xor d(28) xor d(29) xor d(30) xor d(31);\r
+ \r
+ parcbe <= cbe_i(0) xor cbe_i(1) xor cbe_i(2) xor cbe_i(3); \r
+ \r
+ par <= pardat xor parcbe;\r
+\r
+ -- u1: sync port map ( clk => clk_i, d => par, q => par_s );\r
+ \r
+ u1: sync2 port map (\r
+ clk => clk_i,\r
+ d => par,\r
+ q => par_s\r
+ );\r
+ \r
+\r
+ --+-------------------------------------------------------------------------+\r
+ --| PAR |\r
+ --+-------------------------------------------------------------------------+\r
+\r
+ par_o <= par_s when ( parOE_i = '1' ) else 'Z';\r
+\r
+\r
+end rtl;\r
--- /dev/null
+// Copyright (C) 2005 Peio Azkarate, peio@opencores.org\r
+//\r
+// This source file is free software; you can redistribute it\r
+// and/or modify it under the terms of the GNU Lesser General\r
+// Public License as published by the Free Software Foundation;\r
+// either version 2.1 of the License, or (at your option) any\r
+// later version.\r
+//\r
+\r
+(* signal_encoding = "user" *)\r
+(* safe_implementation = "yes" *)\r
+\r
+module pciwbsequ_new ( clk_i, nrst_i, cmd_i, cbe_i, frame_i, irdy_i, devsel_o, \r
+ trdy_o, adrcfg_i, adrmem_i, pciadrLD_o, pcidOE_o, parOE_o, wbdatLD_o, \r
+ wbrgdMX_o, wbd16MX_o, wrcfg_o, rdcfg_o, wb_sel_o, wb_we_o, wb_stb_o, \r
+ wb_cyc_o, wb_ack_i, wb_err_i, debug_init, debug_access );\r
+\r
+ // General \r
+ input clk_i;\r
+ input nrst_i;\r
+ // pci \r
+ // adr_i\r
+ input [3:0] cmd_i;\r
+ input [3:0] cbe_i;\r
+ input frame_i;\r
+ input irdy_i;\r
+ output devsel_o;\r
+ output trdy_o;\r
+ // control\r
+ input adrcfg_i;\r
+ input adrmem_i;\r
+ output pciadrLD_o;\r
+ output pcidOE_o;\r
+ output reg parOE_o;\r
+ output wbdatLD_o;\r
+ output wbrgdMX_o;\r
+ output wbd16MX_o;\r
+ output wrcfg_o;\r
+ output rdcfg_o;\r
+ // whisbone\r
+ output [1:0] wb_sel_o;\r
+ output wb_we_o;\r
+ inout wb_stb_o;\r
+ output wb_cyc_o;\r
+ input wb_ack_i;\r
+ input wb_err_i;\r
+ // debug signals\r
+ output reg debug_init;\r
+ output reg debug_access;\r
+\r
+ //type PciFSM is ( PCIIDLE, B_BUSY, S_DATA1, S_DATA2, TURN_AR ); \r
+ //wire pst_pci : PciFSM;\r
+ //wire nxt_pci : PciFSM;\r
+\r
+ // typedef enum reg [2:0] {\r
+ // RED, GREEN, BLUE, CYAN, MAGENTA, YELLOW\r
+ // } color_t;\r
+ //\r
+ // color_t my_color = GREEN;\r
+\r
+ // parameter PCIIDLE = 2'b00;\r
+ // parameter B_BUSY = 2'b01;\r
+ // parameter S_DATA1 = 2'b10;\r
+ // parameter S_DATA2 = 2'b11;\r
+ // parameter TURN_AR = 3'b100;\r
+\r
+ reg [2:0] pst_pci;\r
+ reg [2:0] nxt_pci;\r
+\r
+ parameter [2:0] \r
+ PCIIDLE = 3'b000,\r
+ B_BUSY = 3'b001,\r
+ S_DATA1 = 3'b010,\r
+ S_DATA2 = 3'b011,\r
+ TURN_AR = 3'b100;\r
+\r
+\r
+ initial begin\r
+ pst_pci = 3'b000;\r
+ end\r
+\r
+ initial begin\r
+ nxt_pci = 3'b000;\r
+ end\r
+ \r
+ wire sdata1;\r
+ wire sdata2;\r
+ wire idleNX;\r
+ wire sdata1NX;\r
+ wire sdata2NX;\r
+ wire turnarNX;\r
+ wire idle;\r
+ reg devselNX_n;\r
+ reg trdyNX_n;\r
+ reg devsel;\r
+ reg trdy;\r
+ wire adrpci;\r
+ wire acking;\r
+ wire rdcfg;\r
+ reg targOE;\r
+ reg pcidOE;\r
+\r
+ // always @(nrst_i or clk_i or nxt_pci)\r
+ always @(negedge nrst_i or posedge clk_i)\r
+ begin\r
+ if( nrst_i == 0 )\r
+ pst_pci <= PCIIDLE;\r
+ else \r
+ pst_pci <= nxt_pci; \r
+ end\r
+\r
+ // always @(negedge nrst_i or posedge clk_i)\r
+ always @( pst_pci or frame_i or irdy_i or adrcfg_i or adrpci or acking )\r
+ begin\r
+ devselNX_n <= 1'b1;\r
+ trdyNX_n <= 1'b1; \r
+ case (pst_pci)\r
+ PCIIDLE : \r
+ begin\r
+ if ( frame_i == 0 )\r
+ nxt_pci <= B_BUSY; \r
+ else\r
+ nxt_pci <= PCIIDLE;\r
+ end\r
+ B_BUSY:\r
+ if ( adrpci == 0 )\r
+ nxt_pci <= TURN_AR;\r
+ else\r
+ begin\r
+ nxt_pci <= S_DATA1;\r
+ devselNX_n <= 0; \r
+ end\r
+ S_DATA1:\r
+ if ( acking == 1 )\r
+ begin\r
+ nxt_pci <= S_DATA2;\r
+ devselNX_n <= 0; \r
+ trdyNX_n <= 0; \r
+ end\r
+ else\r
+ begin\r
+ nxt_pci <= S_DATA1;\r
+ devselNX_n <= 0; \r
+ end\r
+ S_DATA2:\r
+ if ( frame_i == 1 && irdy_i == 0 )\r
+ nxt_pci <= TURN_AR;\r
+ else\r
+ begin\r
+ nxt_pci <= S_DATA2;\r
+ devselNX_n <= 0;\r
+ trdyNX_n <= 0;\r
+ end\r
+ TURN_AR:\r
+ if ( frame_i == 1 )\r
+ nxt_pci <= PCIIDLE;\r
+ else\r
+ nxt_pci <= TURN_AR;\r
+ endcase\r
+ end\r
+\r
+ // FSM control signals\r
+ assign adrpci = adrmem_i;\r
+ \r
+ assign acking = (\r
+ ( wb_ack_i == 1 || wb_err_i == 1 ) || \r
+ ( adrcfg_i == 1 && irdy_i == 0)\r
+ ) ? 1'b1 : 1'b0; \r
+\r
+ // FSM derived Control signals\r
+ assign idle = ( pst_pci <= PCIIDLE ) ? 1'b1 : 1'b0;\r
+ assign sdata1 = ( pst_pci <= S_DATA1 ) ? 1'b1 : 1'b0;\r
+ assign sdata2 = ( pst_pci <= S_DATA2 ) ? 1'b1 : 1'b0;\r
+ assign idleNX = ( nxt_pci <= PCIIDLE ) ? 1'b1 : 1'b0;\r
+ assign sdata1NX = ( nxt_pci <= S_DATA1 ) ? 1'b1 : 1'b0;\r
+ assign sdata2NX = ( nxt_pci <= S_DATA2 ) ? 1'b1 : 1'b0;\r
+ assign turnarNX = ( nxt_pci <= TURN_AR ) ? 1'b1 : 1'b0;\r
+\r
+ // PCI Data Output Enable\r
+ // always @( nrst_i or clk_i or cmd_i [0] or sdata1NX or turnarNX )\r
+ always @(negedge nrst_i or posedge clk_i)\r
+ begin\r
+ if ( nrst_i == 0 )\r
+ pcidOE <= 0;\r
+ else\r
+ if ( sdata1NX == 1 && cmd_i [0] == 0 )\r
+ pcidOE <= 1;\r
+ else \r
+ if ( turnarNX == 1 )\r
+ pcidOE <= 0;\r
+ end\r
+\r
+ assign pcidOE_o = pcidOE;\r
+\r
+ // PAR Output Enable\r
+ // PCI Read data phase\r
+ // PAR is valid 1 cicle after data is valid\r
+ // always @( nrst_i or clk_i or cmd_i [0] or sdata2NX or turnarNX )\r
+ always @(negedge nrst_i or posedge clk_i)\r
+ begin\r
+ if ( nrst_i == 0 )\r
+ parOE_o <= 0;\r
+ else\r
+ if ( ( sdata2NX == 1 || turnarNX == 1 ) && cmd_i [0] == 0 )\r
+ parOE_o <= 1;\r
+ else\r
+ parOE_o <= 0;\r
+ end\r
+\r
+ // Target s/t/s signals OE control\r
+ // targOE <= '1' when ( idle = '0' and adrpci = '1' ) else '0';\r
+ // always @( nrst_i or clk_i or sdata1NX or idleNX )\r
+ always @(negedge nrst_i or posedge clk_i)\r
+ begin\r
+ if ( nrst_i == 0 )\r
+ targOE <= 0;\r
+ else\r
+ if ( sdata1NX == 1 )\r
+ targOE <= 1;\r
+ else \r
+ if ( idleNX == 1 )\r
+ targOE <= 0;\r
+ end\r
+ \r
+ // WHISBONE outs\r
+ assign wb_cyc_o = (adrmem_i == 1 && sdata1 == 1) ? 1'b1 : 1'b0;\r
+ assign wb_stb_o = (adrmem_i == 1 && sdata1 == 1 && irdy_i == 0 ) ? 1'b1 : 1'b0;\r
+\r
+ // PCI(Little endian) to WB(Big endian)\r
+ assign wb_sel_o [1] = (! cbe_i [0]) || (! cbe_i [2]);\r
+ assign wb_sel_o [0] = (! cbe_i [1]) || (! cbe_i [3]); \r
+\r
+ assign wb_we_o = cmd_i [0];\r
+\r
+ // Syncronized PCI outs\r
+ always @(negedge nrst_i or posedge clk_i)\r
+ begin\r
+ if( nrst_i == 0 )\r
+ begin\r
+ devsel <= 1;\r
+ trdy <= 1;\r
+ end\r
+ else\r
+ begin\r
+ devsel <= devselNX_n;\r
+ trdy <= trdyNX_n;\r
+ end\r
+ end\r
+\r
+ assign devsel_o = ( targOE == 1 ) ? devsel : 1'bZ;\r
+ assign trdy_o = ( targOE == 1 ) ? trdy : 1'bZ;\r
+\r
+ // rd/wr Configuration Space Registers\r
+ assign wrcfg_o = (\r
+ adrcfg_i == 1 &&\r
+ cmd_i [0] == 1 &&\r
+ sdata2 == 1\r
+ ) ? 1'b1 : 1'b0;\r
+\r
+ assign rdcfg = (\r
+ adrcfg_i == 1 &&\r
+ cmd_i [0] == 0 &&\r
+ (sdata1 == 1 || sdata2 == 1)\r
+ ) ? 1'b1 : 1'b0;\r
+\r
+ assign rdcfg_o = rdcfg;\r
+\r
+ // LoaD enable signals\r
+ assign pciadrLD_o = ! frame_i;\r
+ assign wbdatLD_o = wb_ack_i;\r
+\r
+ // Mux control signals\r
+ assign wbrgdMX_o = ! rdcfg;\r
+ assign wbd16MX_o = (cbe_i [3] == 0 || cbe_i [2] == 0) ? 1'b1 : 1'b0;\r
+ \r
+ // debug outs \r
+ always @(negedge nrst_i or posedge clk_i)\r
+ begin\r
+ if ( nrst_i == 0 )\r
+ debug_init <= 0;\r
+ else\r
+ if (devsel == 0)\r
+ debug_init <= 1;\r
+ end\r
+\r
+ always @(negedge nrst_i or posedge clk_i)\r
+ begin\r
+ if ( nrst_i == 0 )\r
+ debug_access <= 0;\r
+ else\r
+ if (wb_stb_o == 1)\r
+ debug_access <= 1;\r
+ end\r
+\r
+endmodule\r
--- /dev/null
+--+-------------------------------------------------------------------------------------------------+\r
+--| |\r
+--| File: pciwbsequ.vhd |\r
+--| |\r
+--| Project: pci32tlite_oc |\r
+--| |\r
+--| Description: FSM controlling PCI to Whisbone sequence. |\r
+--| |\r
+--+-------------------------------------------------------------------------------------------------+\r
+--| |\r
+--| Revision history : |\r
+--| Date Version Author Description |\r
+--| 2005-05-13 R00A00 PAU First alfa revision (eng) |\r
+--| 2006-01-09 MS added debug signals debug_init, debug_access | |\r
+--| |\r
+--| To do: |\r
+--| |\r
+--+-------------------------------------------------------------------------------------------------+\r
+--+-----------------------------------------------------------------+\r
+--| |\r
+--| Copyright (C) 2005 Peio Azkarate, peio@opencores.org | \r
+--| |\r
+--| This source file may be used and distributed without |\r
+--| restriction provided that this copyright statement is not |\r
+--| removed from the file and that any derivative work contains |\r
+--| the original copyright notice and the associated disclaimer. |\r
+--| |\r
+--| This source file is free software; you can redistribute it |\r
+--| and/or modify it under the terms of the GNU Lesser General |\r
+--| Public License as published by the Free Software Foundation; |\r
+--| either version 2.1 of the License, or (at your option) any |\r
+--| later version. |\r
+--| |\r
+--| This source is distributed in the hope that it will be |\r
+--| useful, but WITHOUT ANY WARRANTY; without even the implied |\r
+--| warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |\r
+--| PURPOSE. See the GNU Lesser General Public License for more |\r
+--| details. |\r
+--| |\r
+--| You should have received a copy of the GNU Lesser General |\r
+--| Public License along with this source; if not, download it |\r
+--| from http://www.opencores.org/lgpl.shtml |\r
+--| |\r
+--+-----------------------------------------------------------------+ \r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| LIBRARIES |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+library ieee;\r
+use ieee.std_logic_1164.all;\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| ENTITY |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+entity pciwbsequ is\r
+port (\r
+\r
+ -- General \r
+ clk_i : in std_logic;\r
+ nrst_i : in std_logic;\r
+ -- pci \r
+ --adr_i\r
+ cmd_i : in std_logic_vector(3 downto 0);\r
+ cbe_i : in std_logic_vector(3 downto 0);\r
+ frame_i : in std_logic;\r
+ irdy_i : in std_logic;\r
+ devsel_o : out std_logic;\r
+ trdy_o : out std_logic;\r
+ -- control\r
+ adrcfg_i : in std_logic;\r
+ adrmem_i : in std_logic;\r
+ pciadrLD_o : out std_logic;\r
+ pcidOE_o : out std_logic;\r
+ parOE_o : out std_logic;\r
+ wbdatLD_o : out std_logic;\r
+ wbrgdMX_o : out std_logic;\r
+ wbd16MX_o : out std_logic; \r
+ wrcfg_o : out std_logic;\r
+ rdcfg_o : out std_logic;\r
+ -- whisbone\r
+ wb_sel_o : out std_logic_vector(1 downto 0);\r
+ wb_we_o : out std_logic;\r
+ wb_stb_o : inout std_logic; \r
+ wb_cyc_o : out std_logic;\r
+ wb_ack_i : in std_logic;\r
+ wb_err_i : in std_logic; \r
+ -- debug signals\r
+ debug_init : out std_logic;\r
+ debug_access : out std_logic \r
+); \r
+end pciwbsequ;\r
+\r
+\r
+architecture rtl of pciwbsequ is\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| COMPONENTS |\r
+--+-----------------------------------------------------------------------------+\r
+--+-----------------------------------------------------------------------------+\r
+--| CONSTANTS |\r
+--+-----------------------------------------------------------------------------+\r
+--+-----------------------------------------------------------------------------+\r
+--| SIGNALS |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+ type PciFSM is ( PCIIDLE, B_BUSY, S_DATA1, S_DATA2, TURN_AR ); \r
+ signal pst_pci : PciFSM;\r
+ signal nxt_pci : PciFSM;\r
+\r
+ signal sdata1 : std_logic;\r
+ signal sdata2 : std_logic;\r
+ signal idleNX : std_logic;\r
+ signal sdata1NX : std_logic;\r
+ signal sdata2NX : std_logic;\r
+ signal turnarNX : std_logic;\r
+ signal idle : std_logic;\r
+ signal devselNX_n : std_logic;\r
+ signal trdyNX_n : std_logic;\r
+ signal devsel : std_logic;\r
+ signal trdy : std_logic;\r
+ signal adrpci : std_logic;\r
+ signal acking : std_logic;\r
+ signal rdcfg : std_logic;\r
+ signal targOE : std_logic;\r
+ signal pcidOE : std_logic;\r
+\r
+\r
+begin\r
+ \r
+ --+-------------------------------------------------------------------------+\r
+ --| PCI-Whisbone Sequencer |\r
+ --+-------------------------------------------------------------------------+\r
+ \r
+ \r
+ --+-------------------------------------------------------------+\r
+ --| FSM PCI-Whisbone |\r
+ --+-------------------------------------------------------------+\r
+ \r
+ PCIFSM_CLOCKED: process( nrst_i, clk_i, nxt_pci )\r
+ begin\r
+ \r
+ if( nrst_i = '0' ) then\r
+ pst_pci <= PCIIDLE;\r
+ elsif( rising_edge(clk_i) ) then\r
+ pst_pci <= nxt_pci; \r
+ end if;\r
+ \r
+ end process PCIFSM_CLOCKED;\r
+\r
+\r
+ PCIFSM_COMB: process( pst_pci, frame_i, irdy_i, adrcfg_i, adrpci, acking )\r
+ begin\r
+ \r
+ devselNX_n <= '1';\r
+ trdyNX_n <= '1'; \r
+ case pst_pci is\r
+\r
+ when PCIIDLE =>\r
+ if ( frame_i = '0' ) then \r
+ nxt_pci <= B_BUSY; \r
+ else\r
+ nxt_pci <= PCIIDLE;\r
+ end if; \r
+ \r
+ when B_BUSY =>\r
+ if ( adrpci = '0' ) then\r
+ nxt_pci <= TURN_AR;\r
+ else\r
+ nxt_pci <= S_DATA1;\r
+ devselNX_n <= '0'; \r
+ end if;\r
+\r
+ when S_DATA1 =>\r
+ if ( acking = '1' ) then \r
+ nxt_pci <= S_DATA2;\r
+ devselNX_n <= '0'; \r
+ trdyNX_n <= '0'; \r
+ else\r
+ nxt_pci <= S_DATA1;\r
+ devselNX_n <= '0'; \r
+ end if; \r
+ \r
+ when S_DATA2 => \r
+ if ( frame_i = '1' and irdy_i = '0' ) then \r
+ nxt_pci <= TURN_AR;\r
+ else\r
+ nxt_pci <= S_DATA2;\r
+ devselNX_n <= '0'; \r
+ trdyNX_n <= '0'; \r
+ end if; \r
+ \r
+ when TURN_AR =>\r
+ if ( frame_i = '1' ) then\r
+ nxt_pci <= PCIIDLE;\r
+ else\r
+ nxt_pci <= TURN_AR;\r
+ end if;\r
+ \r
+ end case;\r
+ \r
+ end process PCIFSM_COMB; \r
+\r
+\r
+ --+-------------------------------------------------------------+\r
+ --| FSM control signals |\r
+ --+-------------------------------------------------------------+\r
+\r
+ adrpci <= adrmem_i or adrcfg_i;\r
+ acking <= '1' when ( wb_ack_i = '1' or wb_err_i = '1' ) or ( adrcfg_i = '1' and irdy_i = '0')\r
+ else '0'; \r
+\r
+\r
+ --+-------------------------------------------------------------+\r
+ --| FSM derived Control signals |\r
+ --+-------------------------------------------------------------+\r
+ idle <= '1' when ( pst_pci = PCIIDLE ) else '0';\r
+ sdata1 <= '1' when ( pst_pci = S_DATA1 ) else '0';\r
+ sdata2 <= '1' when ( pst_pci = S_DATA2 ) else '0';\r
+ idleNX <= '1' when ( nxt_pci = PCIIDLE ) else '0';\r
+ sdata1NX <= '1' when ( nxt_pci = S_DATA1 ) else '0'; \r
+ sdata2NX <= '1' when ( nxt_pci = S_DATA2 ) else '0';\r
+ turnarNX <= '1' when ( nxt_pci = TURN_AR ) else '0';\r
+ \r
+\r
+\r
+ --+-------------------------------------------------------------+\r
+ --| PCI Data Output Enable |\r
+ --+-------------------------------------------------------------+\r
+\r
+ PCIDOE_P: process( nrst_i, clk_i, cmd_i(0), sdata1NX, turnarNX )\r
+ begin\r
+\r
+ if ( nrst_i = '0' ) then \r
+ pcidOE <= '0';\r
+ elsif ( rising_edge(clk_i) ) then \r
+\r
+ if ( sdata1NX = '1' and cmd_i(0) = '0' ) then\r
+ pcidOE <= '1';\r
+ elsif ( turnarNX = '1' ) then\r
+ pcidOE <= '0';\r
+ end if; \r
+ \r
+ end if;\r
+\r
+ end process PCIDOE_P;\r
+\r
+ pcidOE_o <= pcidOE;\r
+\r
+\r
+ --+-------------------------------------------------------------+\r
+ --| PAR Output Enable |\r
+ --| PCI Read data phase |\r
+ --| PAR is valid 1 cicle after data is valid |\r
+ --+-------------------------------------------------------------+\r
+\r
+ PAROE_P: process( nrst_i, clk_i, cmd_i(0), sdata2NX, turnarNX )\r
+ begin\r
+\r
+ if ( nrst_i = '0' ) then \r
+ parOE_o <= '0';\r
+ elsif ( rising_edge(clk_i) ) then \r
+\r
+ if ( ( sdata2NX = '1' or turnarNX = '1' ) and cmd_i(0) = '0' ) then\r
+ parOE_o <= '1';\r
+ else\r
+ parOE_o <= '0';\r
+ end if; \r
+ \r
+ end if;\r
+ \r
+ end process PAROE_P;\r
+\r
+ \r
+ --+-------------------------------------------------------------+\r
+ --| Target s/t/s signals OE control |\r
+ --+-------------------------------------------------------------+\r
+\r
+-- targOE <= '1' when ( idle = '0' and adrpci = '1' ) else '0';\r
+ TARGOE_P: process( nrst_i, clk_i, sdata1NX, idleNX )\r
+ begin\r
+\r
+ if ( nrst_i = '0' ) then \r
+ targOE <= '0';\r
+ elsif ( rising_edge(clk_i) ) then \r
+\r
+ if ( sdata1NX = '1' ) then\r
+ targOE <= '1';\r
+ elsif ( idleNX = '1' ) then\r
+ targOE <= '0';\r
+ end if; \r
+ \r
+ end if;\r
+\r
+ end process TARGOE_P;\r
+ \r
+\r
+ --+-------------------------------------------------------------------------+\r
+ --| WHISBONE outs |\r
+ --+-------------------------------------------------------------------------+\r
+ \r
+ wb_cyc_o <= '1' when ( adrmem_i = '1' and sdata1 = '1' ) else '0';\r
+ wb_stb_o <= '1' when ( adrmem_i = '1' and sdata1 = '1' and irdy_i = '0' ) else '0';\r
+\r
+ -- PCI(Little endian) to WB(Big endian)\r
+ wb_sel_o(1) <= (not cbe_i(0)) or (not cbe_i(2));\r
+ wb_sel_o(0) <= (not cbe_i(1)) or (not cbe_i(3)); \r
+ -- \r
+ wb_we_o <= cmd_i(0);\r
+ \r
+\r
+ --+-------------------------------------------------------------------------+\r
+ --| Syncronized PCI outs |\r
+ --+-------------------------------------------------------------------------+\r
+ \r
+ PCISIG: process( nrst_i, clk_i, devselNX_n, trdyNX_n)\r
+ begin\r
+\r
+ if( nrst_i = '0' ) then \r
+ devsel <= '1';\r
+ trdy <= '1';\r
+ elsif( rising_edge(clk_i) ) then \r
+ \r
+ devsel <= devselNX_n;\r
+ trdy <= trdyNX_n;\r
+ \r
+ end if;\r
+ \r
+ end process PCISIG;\r
+\r
+ devsel_o <= devsel when ( targOE = '1' ) else 'Z';\r
+ trdy_o <= trdy when ( targOE = '1' ) else 'Z';\r
+ \r
+\r
+ --+-------------------------------------------------------------------------+\r
+ --| Other outs |\r
+ --+-------------------------------------------------------------------------+\r
+\r
+ -- rd/wr Configuration Space Registers\r
+ wrcfg_o <= '1' when ( adrcfg_i = '1' and cmd_i(0) = '1' and sdata2 = '1' ) else '0';\r
+ rdcfg <= '1' when ( adrcfg_i = '1' and cmd_i(0) = '0' and ( sdata1 = '1' or sdata2 = '1' ) ) else '0';\r
+ rdcfg_o <= rdcfg;\r
+ \r
+ -- LoaD enable signals\r
+ pciadrLD_o <= not frame_i;\r
+ wbdatLD_o <= wb_ack_i;\r
+\r
+ -- Mux control signals\r
+ wbrgdMX_o <= not rdcfg;\r
+ wbd16MX_o <= '1' when ( cbe_i(3) = '0' or cbe_i(2) = '0' ) else '0';\r
+ \r
+ --+-------------------------------------------------------------------------+\r
+ --| debug outs |\r
+ --+-------------------------------------------------------------------------+\r
+ \r
+ process (nrst_i, clk_i)\r
+ begin\r
+ if ( nrst_i = '0' ) then\r
+ debug_init <= '0';\r
+ elsif clk_i'event and clk_i = '1' then\r
+ if devsel = '0' then\r
+ debug_init <= '1';\r
+ end if;\r
+ end if;\r
+ end process; \r
+ \r
+ process (nrst_i, clk_i)\r
+ begin\r
+ if ( nrst_i = '0' ) then\r
+ debug_access <= '0';\r
+ elsif clk_i'event and clk_i = '1' then\r
+ if wb_stb_o = '1' then\r
+ debug_access <= '1';\r
+ end if;\r
+ end if;\r
+ end process; \r
+\r
+end rtl;\r
--- /dev/null
+module pfs2 (clk, a, b);
+ input clk;
+ input a;
+ output b;
+ reg b;
+
+ always @(posedge clk)
+ begin
+ b <= a;
+ end
+endmodule
--- /dev/null
+--+-----------------------------------------+
+--| pfs |
+--+-----------------------------------------+
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity pfs is
+port (
+ clk : in std_logic;
+ a : in std_logic;
+ y : out std_logic
+
+);
+end pfs;
+
+architecture rtl of pfs is
+
+ signal a_s : std_logic;
+
+begin
+
+ SYNCP: process( clk, a )
+ begin
+
+ if ( rising_edge(clk) ) then
+ a_s <= a;
+ end if;
+
+ end process SYNCP;
+
+ y <= a and (not a_s);
+
+end rtl;
+
--- /dev/null
+module sync2 (clk, d, q);
+ input clk;
+ input d;
+ output q;
+ reg q;
+
+ always @(posedge clk)
+ begin
+ q <= d;
+ end
+endmodule
--- /dev/null
+/*
+`define PCIIDLE 1'h0;
+`define B_BUSY 1'h1;
+`define S_DATA1 1'h2;
+`define S_DATA2 1'h3;
+`define TURN_AR 1'h4;
+*/
+
+paramater PCIIDLE = 1'h0;
+paramater B_BUSY = 1'h1;
+paramater S_DATA1 = 1'h2;
+paramater S_DATA2 = 1'h3;
+paramater TURN_AR = 1'h4;
+
--- /dev/null
+--+-------------------------------------------------------------------------------------------------+\r
+--| |\r
+--| File: top.vhd |\r
+--| |\r
+--| Components: pci32lite.vhd |\r
+--| pciwbsequ.vhd |\r
+--| pcidmux.vhd |\r
+--| pciregs.vhd |\r
+--| pcipargen.vhd |\r
+--| -- Libs -- |\r
+--| ona.vhd |\r
+--| |\r
+--| Description: RS1 PCI Demo : (TOP) Main file. |\r
+--| |\r
+--| |\r
+--| |\r
+--+-------------------------------------------------------------------------------------------------+\r
+--| |\r
+--| Revision history : |\r
+--| Date Version Author Description |\r
+--| |\r
+--| |\r
+--| To do: |\r
+--| |\r
+--+-------------------------------------------------------------------------------------------------+\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| LIBRARIES |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+library ieee;\r
+use ieee.std_logic_1164.all;\r
+use ieee.std_logic_arith.all;\r
+use ieee.std_logic_unsigned.all;\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| ENTITY |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+entity dhwk is\r
+port (\r
+\r
+ -- General \r
+ PCI_CLK : in std_logic;\r
+ PCI_nRES : in std_logic;\r
+ \r
+ -- PCI target 32bits\r
+ PCI_AD : inout std_logic_vector(31 downto 0);\r
+ PCI_CBE : in std_logic_vector(3 downto 0);\r
+ PCI_PAR : out std_logic; \r
+ PCI_nFRAME : in std_logic;\r
+ PCI_nIRDY : in std_logic;\r
+ PCI_nTRDY : out std_logic;\r
+ PCI_nDEVSEL : out std_logic;\r
+ PCI_nSTOP : out std_logic;\r
+ PCI_IDSEL : in std_logic;\r
+ PCI_nPERR : out std_logic;\r
+ PCI_nSERR : out std_logic;\r
+ PCI_nINT : out std_logic;\r
+ \r
+ -- debug signals\r
+ LED3 : out std_logic;\r
+ LED2 : out std_logic;\r
+ LED4 : out std_logic;\r
+ LED5 : out std_logic\r
+\r
+);\r
+end dhwk;\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| ARCHITECTURE |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+architecture dhwk_arch of dhwk is\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| COMPONENTS |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+component pci32tlite\r
+port (\r
+\r
+ -- General \r
+ clk33 : in std_logic;\r
+ nrst : in std_logic;\r
+ \r
+ -- PCI target 32bits\r
+ ad : inout std_logic_vector(31 downto 0);\r
+ cbe : in std_logic_vector(3 downto 0);\r
+ par : out std_logic; \r
+ frame : in std_logic;\r
+ irdy : in std_logic;\r
+ trdy : out std_logic;\r
+ devsel : out std_logic;\r
+ stop : out std_logic;\r
+ idsel : in std_logic;\r
+ perr : out std_logic;\r
+ serr : out std_logic;\r
+ intb : out std_logic;\r
+ \r
+ -- Master whisbone\r
+ wb_adr_o : out std_logic_vector(24 downto 1); \r
+ wb_dat_i : in std_logic_vector(15 downto 0);\r
+ wb_dat_o : out std_logic_vector(15 downto 0);\r
+ wb_sel_o : out std_logic_vector(1 downto 0);\r
+ wb_we_o : out std_logic;\r
+ wb_stb_o : out std_logic;\r
+ wb_cyc_o : out std_logic;\r
+ wb_ack_i : in std_logic;\r
+ wb_err_i : in std_logic;\r
+ wb_int_i : in std_logic;\r
+\r
+ -- debug signals\r
+ debug_init : out std_logic;\r
+ debug_access : out std_logic \r
+\r
+ );\r
+end component;\r
+\r
+component heartbeat\r
+port (\r
+ clk_i : in std_logic;\r
+ nrst_i : in std_logic;\r
+ led2_o : out std_logic;\r
+ led3_o : out std_logic;\r
+ led4_o : out std_logic;\r
+ led5_o : out std_logic\r
+);\r
+end component;\r
+\r
+\r
+--+-----------------------------------------------------------------------------+\r
+--| CONSTANTS |\r
+--+-----------------------------------------------------------------------------+\r
+--+-----------------------------------------------------------------------------+\r
+--| SIGNALS |\r
+--+-----------------------------------------------------------------------------+\r
+\r
+ signal wb_adr : std_logic_vector(24 downto 1); \r
+ signal wb_dat_out : std_logic_vector(15 downto 0);\r
+ signal wb_dat_in : std_logic_vector(15 downto 0);\r
+ signal wb_sel : std_logic_vector(1 downto 0);\r
+ signal wb_we : std_logic;\r
+ signal wb_stb : std_logic;\r
+ signal wb_cyc : std_logic;\r
+ signal wb_ack : std_logic;\r
+ signal wb_err : std_logic;\r
+ signal wb_int : std_logic;\r
+\r
+\r
+begin\r
+\r
+--+-----------------------------------------+\r
+--| PCI Target |\r
+--+-----------------------------------------+\r
+\r
+u_pci: component pci32tlite\r
+port map(\r
+ clk33 => PCI_CLK,\r
+ nrst => PCI_nRES,\r
+ ad => PCI_AD,\r
+ cbe => PCI_CBE,\r
+ par => PCI_PAR,\r
+ frame => PCI_nFRAME,\r
+ irdy => PCI_nIRDY,\r
+ trdy => PCI_nTRDY,\r
+ devsel => PCI_nDEVSEL,\r
+ stop => PCI_nSTOP,\r
+ idsel => PCI_IDSEL,\r
+ perr => PCI_nPERR,\r
+ serr => PCI_nSERR,\r
+ intb => PCI_nINT,\r
+ wb_adr_o => wb_adr, \r
+ wb_dat_i => wb_dat_out,\r
+ wb_dat_o => wb_dat_in,\r
+ wb_sel_o => wb_sel, \r
+ wb_we_o => wb_we,\r
+ wb_stb_o => wb_stb, \r
+ wb_cyc_o => wb_cyc,\r
+ wb_ack_i => wb_ack,\r
+ wb_err_i => wb_err,\r
+ wb_int_i => wb_int\r
+-- debug_init => LED3,\r
+-- debug_access => LED2\r
+ );\r
+\r
+--+-----------------------------------------+\r
+--| WB-7seg |\r
+--+-----------------------------------------+\r
+\r
+my_heartbeat: component heartbeat\r
+port map( \r
+ clk_i => PCI_CLK,\r
+ nrst_i => PCI_nRES,\r
+ led2_o => LED2,\r
+ led3_o => LED3,\r
+ led4_o => LED4,\r
+ led5_o => LED5\r
+);\r
+\r
+end dhwk_arch;\r
--- /dev/null
+---------------------------------------------------------------------\r
+-- vga_main.vhd Demo VGA configuration module.\r
+---------------------------------------------------------------------\r
+-- Author: Barron Barnett\r
+-- Copyright 2004 Digilent, Inc.\r
+---------------------------------------------------------------------\r
+--\r
+-- This project is compatible with Xilinx ISE or Xilinx WebPack tools.\r
+--\r
+-- Inputs: \r
+-- mclk - System Clock\r
+-- Outputs:\r
+-- hs - Horizontal Sync\r
+-- vs - Vertical Sync\r
+-- red - Red Output\r
+-- grn - Green Output\r
+-- blu - Blue Output\r
+--\r
+-- This module creates a three line pattern on a vga display using a\r
+-- a vertical refresh rate of 60Hz. This is done by dividing the\r
+-- system clock in half and using that for the pixel clock. This in\r
+-- turn drives the vertical sync when the horizontal sync has reached\r
+-- its reset point. All data displayed is done by basic value\r
+-- comparisons.\r
+------------------------------------------------------------------------\r
+-- Revision History:\r
+-- 07/01/2004(BarronB): created\r
+------------------------------------------------------------------------\r
+library IEEE;\r
+use IEEE.STD_LOGIC_1164.ALL;\r
+use IEEE.STD_LOGIC_ARITH.ALL;\r
+use IEEE.STD_LOGIC_UNSIGNED.ALL;\r
+\r
+\r
+entity vgaController is\r
+ Port ( mclk : in std_logic;\r
+ hs : out std_logic;\r
+ vs : out std_logic;\r
+ red : out std_logic;\r
+ grn : out std_logic;\r
+ blu : out std_logic);\r
+end vgaController;\r
+\r
+architecture Behavioral of vgaController is\r
+\r
+\r
+ constant hpixels : std_logic_vector(9 downto 0) := "1100100000"; --Value of pixels in a horizontal line\r
+ constant vlines : std_logic_vector(9 downto 0) := "1000001001"; --Number of horizontal lines in the display\r
+ \r
+ constant hbp : std_logic_vector(9 downto 0) := "0010010000"; --Horizontal back porch\r
+ constant hfp : std_logic_vector(9 downto 0) := "1100010000"; --Horizontal front porch\r
+ constant vbp : std_logic_vector(9 downto 0) := "0000011111"; --Vertical back porch\r
+ constant vfp : std_logic_vector(9 downto 0) := "0111111111"; --Vertical front porch\r
+ \r
+ signal hc, vc : std_logic_vector(9 downto 0); --These are the Horizontal and Vertical counters\r
+ signal clkdiv : std_logic; --Clock divider\r
+ signal vidon : std_logic; --Tells whether or not its ok to display data\r
+ signal vsenable : std_logic; --Enable for the Vertical counter\r
+\r
+begin\r
+ --This cuts the 50Mhz clock in half\r
+ process(mclk)\r
+ begin\r
+ if(mclk = '1' and mclk'EVENT) then\r
+ clkdiv <= not clkdiv;\r
+ end if;\r
+ end process; \r
+\r
+ --Runs the horizontal counter\r
+ process(clkdiv)\r
+ begin\r
+ if(clkdiv = '1' and clkdiv'EVENT) then\r
+ if hc = hpixels then --If the counter has reached the end of pixel count\r
+ hc <= "0000000000"; --reset the counter\r
+ vsenable <= '1'; --Enable the vertical counter to increment\r
+ else\r
+ hc <= hc + 1; --Increment the horizontal counter\r
+ vsenable <= '0'; --Leave the vsenable off\r
+ end if;\r
+ end if;\r
+ end process;\r
+\r
+ hs <= '1' when hc(9 downto 7) = "000" else '0'; --Horizontal Sync Pulse\r
+\r
+ process(clkdiv)\r
+ begin\r
+ if(clkdiv = '1' and clkdiv'EVENT and vsenable = '1') then --Increment when enabled\r
+ if vc = vlines then --Reset when the number of lines is reached\r
+ vc <= "0000000000";\r
+ else vc <= vc + 1; --Increment the vertical counter\r
+ end if;\r
+ end if;\r
+ end process;\r
+\r
+ vs <= '1' when vc(9 downto 1) = "000000000" else '0'; --Vertical Sync Pulse\r
+\r
+ red <= '1' when (hc = "1010101100" and vidon ='1') else '0'; --Red pixel on at a specific horizontal count\r
+ grn <= '1' when (hc = "0100000100" and vidon ='1') else '0'; --Green pixel on at a specific horizontal count\r
+ blu <= '1' when (vc = "0100100001" and vidon ='1') else '0'; --Blue pixel on at a specific vertical count\r
+\r
+ vidon <= '1' when (((hc < hfp) and (hc > hbp)) or ((vc < vfp) and (vc > vbp))) else '0'; --Enable video out when within the porches\r
+\r
+end Behavioral;\r
--- /dev/null
+module wb_7seg_new (clk_i, nrst_i, wb_adr_i, wb_dat_o, wb_dat_i, wb_sel_i, wb_we_i, \r
+ wb_stb_i, wb_cyc_i, wb_ack_o, wb_err_o, wb_int_o, DISP_SEL, DISP_LED);\r
+\r
+ input clk_i;\r
+ input nrst_i;\r
+ input [24:1] wb_adr_i;\r
+ output [15:0] wb_dat_o;\r
+ input [15:0] wb_dat_i;\r
+ input [1:0] wb_sel_i;\r
+ input wb_we_i;\r
+ input wb_stb_i;\r
+ input wb_cyc_i;\r
+ output wb_ack_o;\r
+ output wb_err_o;\r
+ output wb_int_o;\r
+ output reg [3:0] DISP_SEL;\r
+ output reg [6:0] DISP_LED;\r
+\r
+ reg [15:0] data_reg;\r
+ reg [6:0] disp_cnt;\r
+ reg [3:0] disp_data;\r
+ wire [6:0] disp_data_led;\r
+ reg [3:0] disp_pos;\r
+\r
+ always @(posedge clk_i or negedge nrst_i)\r
+ begin\r
+ if (nrst_i == 0)\r
+ data_reg <= 16'hABCD;\r
+ else \r
+ if (wb_stb_i && wb_we_i)\r
+ data_reg <= wb_dat_i;\r
+ end\r
+\r
+ assign wb_ack_o = wb_stb_i;\r
+ assign wb_err_o = 1'b0;\r
+ assign wb_int_o = 1'b0;\r
+ assign wb_dat_o = data_reg;\r
+\r
+ always @(posedge clk_i or negedge nrst_i)\r
+ begin\r
+ if (nrst_i == 0)\r
+ disp_cnt <= 7'b0000000;\r
+ else \r
+ disp_cnt <= disp_cnt + 1;\r
+ end\r
+\r
+ always @(posedge clk_i or negedge nrst_i)\r
+ begin\r
+ if (nrst_i == 0)\r
+ disp_pos <= 4'b0010;\r
+ else \r
+ if (disp_cnt == 7'b1111111)\r
+ disp_pos <= {DISP_SEL[2] , DISP_SEL[1] , DISP_SEL[0] , DISP_SEL[3]};\r
+ end\r
+\r
+ always @(posedge clk_i or negedge nrst_i)\r
+ begin\r
+ if (nrst_i == 0)\r
+ disp_data <= 4'b0000;\r
+ else \r
+ case (DISP_SEL)\r
+ 4'b1000: disp_data <= data_reg[3:0];\r
+ 4'b0100: disp_data <= data_reg[7:4];\r
+ 4'b0010: disp_data <= data_reg[11:8];\r
+ 4'b0001: disp_data <= data_reg[15:12];\r
+ endcase\r
+ end\r
+\r
+ disp_dec u0 (disp_data, disp_data_led);\r
+\r
+ always @(posedge clk_i or negedge nrst_i)\r
+ begin\r
+ if (nrst_i == 0)\r
+ DISP_LED <= 7'b0000000;\r
+ else \r
+ DISP_LED <= disp_data_led;\r
+ end\r
+\r
+ always @(posedge clk_i or negedge nrst_i)\r
+ begin\r
+ if (nrst_i == 0)\r
+ DISP_SEL <= 0;\r
+ else \r
+ DISP_SEL <= disp_pos;\r
+ end\r
+\r
+endmodule\r
projects / raggedstone / commitdiff