Skip to content
Snippets Groups Projects
Commit f8b0e70c authored by joachim.schmidt's avatar joachim.schmidt
Browse files

Back pressure process update

parent 997921ee
Branches
Tags v0.9.1
No related merge requests found
Hide whitespace changes
Inline Side-by-side
designs/vivado/scalp_firmware/2019.2/src/hdl/scalp_firmware.vhd
+ 123
− 105
View file @ f8b0e70c
...@@ -15,7 +15,7 @@ ...@@ -15,7 +15,7 @@
-- Tool version: 2019.2 -- Tool version: 2019.2
-- Description: scalp_firmware -- Description: scalp_firmware
-- --
-- Last update: 2020-11-07 -- Last update: 2020-11-08
-- --
--------------------------------------------------------------------------------- ---------------------------------------------------------------------------------
...@@ -711,114 +711,118 @@ begin ...@@ -711,114 +711,118 @@ begin
BackPressurexB : block is BackPressurexB : block is
signal NorthSendXOFFxSN : std_ulogic := '0';
signal NorthSendXOFFxSP : std_ulogic := '0';
signal EastSendXOFFxSN : std_ulogic := '0';
signal EastSendXOFFxSP : std_ulogic := '0';
signal SouthSendXOFFxSN : std_ulogic := '0';
signal SouthSendXOFFxSP : std_ulogic := '0';
signal WestSendXOFFxSN : std_ulogic := '0';
signal WestSendXOFFxSP : std_ulogic := '0';
-- North -- North
signal NorthNFCStatexDN : t_nfc_states := C_NFC_IDLE; signal NorthProgFullxSN : std_ulogic := '0';
signal NorthNFCStatexDP : t_nfc_states := C_NFC_IDLE; signal NorthProgFullxSP : std_ulogic := '0';
signal NorthNFCDataxDN : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0'); signal NorthProgEmptyxSN : std_ulogic := '0';
signal NorthNFCDataxDP : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0'); signal NorthProgEmptyxSP : std_ulogic := '0';
signal NorthNFCValidxSN : std_ulogic := '0'; signal NorthNFCStatexDN : t_nfc_states := C_NFC_IDLE;
signal NorthNFCValidxSP : std_ulogic := '0'; signal NorthNFCStatexDP : t_nfc_states := C_NFC_IDLE;
signal NorthNFCDataxDN : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0');
signal NorthNFCDataxDP : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0');
signal NorthNFCValidxSN : std_ulogic := '0';
signal NorthNFCValidxSP : std_ulogic := '0';
-- East -- East
signal EastNFCStatexDN : t_nfc_states := C_NFC_IDLE; signal EastProgFullxSN : std_ulogic := '0';
signal EastNFCStatexDP : t_nfc_states := C_NFC_IDLE; signal EastProgFullxSP : std_ulogic := '0';
signal EastNFCDataxDN : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0'); signal EastProgEmptyxSN : std_ulogic := '0';
signal EastNFCDataxDP : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0'); signal EastProgEmptyxSP : std_ulogic := '0';
signal EastNFCValidxSN : std_ulogic := '0'; signal EastNFCStatexDN : t_nfc_states := C_NFC_IDLE;
signal EastNFCValidxSP : std_ulogic := '0'; signal EastNFCStatexDP : t_nfc_states := C_NFC_IDLE;
signal EastNFCDataxDN : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0');
signal EastNFCDataxDP : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0');
signal EastNFCValidxSN : std_ulogic := '0';
signal EastNFCValidxSP : std_ulogic := '0';
-- South -- South
signal SouthNFCStatexDN : t_nfc_states := C_NFC_IDLE; signal SouthProgFullxSN : std_ulogic := '0';
signal SouthNFCStatexDP : t_nfc_states := C_NFC_IDLE; signal SouthProgFullxSP : std_ulogic := '0';
signal SouthNFCDataxDN : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0'); signal SouthProgEmptyxSN : std_ulogic := '0';
signal SouthNFCDataxDP : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0'); signal SouthProgEmptyxSP : std_ulogic := '0';
signal SouthNFCValidxSN : std_ulogic := '0'; signal SouthNFCStatexDN : t_nfc_states := C_NFC_IDLE;
signal SouthNFCValidxSP : std_ulogic := '0'; signal SouthNFCStatexDP : t_nfc_states := C_NFC_IDLE;
signal SouthNFCDataxDN : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0');
signal SouthNFCDataxDP : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0');
signal SouthNFCValidxSN : std_ulogic := '0';
signal SouthNFCValidxSP : std_ulogic := '0';
-- West -- West
signal WestNFCStatexDN : t_nfc_states := C_NFC_IDLE; signal WestProgFullxSN : std_ulogic := '0';
signal WestNFCStatexDP : t_nfc_states := C_NFC_IDLE; signal WestProgFullxSP : std_ulogic := '0';
signal WestNFCDataxDN : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0'); signal WestProgEmptyxSN : std_ulogic := '0';
signal WestNFCDataxDP : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0'); signal WestProgEmptyxSP : std_ulogic := '0';
signal WestNFCValidxSN : std_ulogic := '0'; signal WestNFCStatexDN : t_nfc_states := C_NFC_IDLE;
signal WestNFCValidxSP : std_ulogic := '0'; signal WestNFCStatexDP : t_nfc_states := C_NFC_IDLE;
signal WestNFCDataxDN : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0');
signal WestNFCDataxDP : std_ulogic_vector((C_AXI4_NFC_DATA_SIZE - 1) downto 0) := (others => '0');
signal WestNFCValidxSN : std_ulogic := '0';
signal WestNFCValidxSP : std_ulogic := '0';
begin -- block BackPressurexB begin -- block BackPressurexB
NorthSendXONxAS : NorthSendXOFFxSN <= '1' when
(NorthRXFromFifoS2MxD.ReadyxS = '0') or
(NorthFifoStatusxD.ProgFullxS = '1') else
'0';
EastSendXONxAS : EastSendXOFFxSN <= '1' when
(EastRXFromFifoS2MxD.ReadyxS = '0') or
(EastFifoStatusxD.ProgFullxS = '1') else
'0';
SouthSendXONxAS : SouthSendXOFFxSN <= '1' when
(SouthRXFromFifoS2MxD.ReadyxS = '0') or
(SouthFifoStatusxD.ProgFullxS = '1') else
'0';
WestSendXONxAS : WestSendXOFFxSN <= '1' when
(WestRXFromFifoS2MxD.ReadyxS = '0') or
(WestFifoStatusxD.ProgFullxS = '1') else
'0';
-- NFC Data and valid signals -- NFC Data and valid signals
NorthNFCDataxAS : NorthTXNFCM2SxD.DataxD <= NorthNFCDataxDP; NorthNFCDataxAS : NorthTXNFCM2SxD.DataxD <= NorthNFCDataxDP;
NorthNFCValidxAS : NorthTXNFCM2SxD.ValidxS <= NorthNFCValidxSP; NorthNFCValidxAS : NorthTXNFCM2SxD.ValidxS <= NorthNFCValidxSP;
EastNFCDataxAS : EastTXNFCM2SxD.DataxD <= EastNFCDataxDP; NorthProgFullxAS : NorthProgFullxSN <= NorthFifoStatusxD.ProgFullxS;
EastNFCValidxAS : EastTXNFCM2SxD.ValidxS <= EastNFCValidxSP; NorthProgEmptyxAS : NorthProgEmptyxSN <= NorthFifoStatusxD.ProgEmptyxS;
SouthNFCDataxAS : SouthTXNFCM2SxD.DataxD <= SouthNFCDataxDP; EastNFCDataxAS : EastTXNFCM2SxD.DataxD <= EastNFCDataxDP;
SouthNFCValidxAS : SouthTXNFCM2SxD.ValidxS <= SouthNFCValidxSP; EastNFCValidxAS : EastTXNFCM2SxD.ValidxS <= EastNFCValidxSP;
WestNFCDataxAS : WestTXNFCM2SxD.DataxD <= WestNFCDataxDP; SouthNFCDataxAS : SouthTXNFCM2SxD.DataxD <= SouthNFCDataxDP;
WestNFCValidxAS : WestTXNFCM2SxD.ValidxS <= WestNFCValidxSP; SouthNFCValidxAS : SouthTXNFCM2SxD.ValidxS <= SouthNFCValidxSP;
WestNFCDataxAS : WestTXNFCM2SxD.DataxD <= WestNFCDataxDP;
WestNFCValidxAS : WestTXNFCM2SxD.ValidxS <= WestNFCValidxSP;
UpdateRegxP : process (AuroraClkMasterxC.PllNotLockedxS, UpdateRegxP : process (AuroraClkMasterxC.PllNotLockedxS,
AuroraClkMasterxC.UserClkxC) is AuroraClkMasterxC.UserClkxC) is
begin -- process UpdateRegxP begin -- process UpdateRegxP
if not AuroraClkMasterxC.PllNotLockedxS then if not AuroraClkMasterxC.PllNotLockedxS then
NorthSendXOFFxSP <= '0'; NorthProgFullxSP <= '0';
EastSendXOFFxSP <= '0'; NorthProgEmptyxSP <= '0';
SouthSendXOFFxSP <= '0'; NorthNFCStatexDP <= C_NFC_IDLE;
WestSendXOFFxSP <= '0'; NorthNFCDataxDP <= (others => '0');
NorthNFCStatexDP <= C_NFC_IDLE; NorthNFCValidxSP <= '0';
NorthNFCDataxDP <= (others => '0'); EastProgFullxSP <= '0';
NorthNFCValidxSP <= '0'; EastProgEmptyxSP <= '0';
EastNFCStatexDP <= C_NFC_IDLE; EastNFCStatexDP <= C_NFC_IDLE;
EastNFCDataxDP <= (others => '0'); EastNFCDataxDP <= (others => '0');
EastNFCValidxSP <= '0'; EastNFCValidxSP <= '0';
SouthNFCStatexDP <= C_NFC_IDLE; SouthProgFullxSP <= '0';
SouthNFCDataxDP <= (others => '0'); SouthProgEmptyxSP <= '0';
SouthNFCValidxSP <= '0'; SouthNFCStatexDP <= C_NFC_IDLE;
WestNFCStatexDP <= C_NFC_IDLE; SouthNFCDataxDP <= (others => '0');
WestNFCDataxDP <= (others => '0'); SouthNFCValidxSP <= '0';
WestNFCValidxSP <= '0'; WestProgFullxSP <= '0';
WestProgEmptyxSP <= '0';
WestNFCStatexDP <= C_NFC_IDLE;
WestNFCDataxDP <= (others => '0');
WestNFCValidxSP <= '0';
elsif rising_edge(AuroraClkMasterxC.UserClkxC) then elsif rising_edge(AuroraClkMasterxC.UserClkxC) then
NorthSendXOFFxSP <= NorthSendXOFFxSN; NorthProgFullxSP <= NorthProgFullxSN;
EastSendXOFFxSP <= EastSendXOFFxSN; NorthProgEmptyxSP <= NorthProgEmptyxSN;
SouthSendXOFFxSP <= SouthSendXOFFxSN; NorthNFCStatexDP <= NorthNFCStatexDN;
WestSendXOFFxSP <= WestSendXOFFxSN; NorthNFCDataxDP <= NorthNFCDataxDN;
NorthNFCStatexDP <= NorthNFCStatexDN; NorthNFCValidxSP <= NorthNFCValidxSN;
NorthNFCDataxDP <= NorthNFCDataxDN; EastProgFullxSP <= EastProgFullxSN;
NorthNFCValidxSP <= NorthNFCValidxSN; EastProgEmptyxSP <= EastProgEmptyxSN;
EastNFCStatexDP <= EastNFCStatexDN; EastNFCStatexDP <= EastNFCStatexDN;
EastNFCDataxDP <= EastNFCDataxDN; EastNFCDataxDP <= EastNFCDataxDN;
EastNFCValidxSP <= EastNFCValidxSN; EastNFCValidxSP <= EastNFCValidxSN;
SouthNFCStatexDP <= SouthNFCStatexDN; SouthProgFullxSP <= SouthProgFullxSN;
SouthNFCDataxDP <= SouthNFCDataxDN; SouthProgEmptyxSP <= SouthProgEmptyxSN;
SouthNFCValidxSP <= SouthNFCValidxSN; SouthNFCStatexDP <= SouthNFCStatexDN;
WestNFCStatexDP <= WestNFCStatexDN; SouthNFCDataxDP <= SouthNFCDataxDN;
WestNFCDataxDP <= WestNFCDataxDN; SouthNFCValidxSP <= SouthNFCValidxSN;
WestNFCValidxSP <= WestNFCValidxSN; WestProgFullxSP <= WestProgFullxSN;
WestProgEmptyxSP <= WestProgEmptyxSN;
WestNFCStatexDP <= WestNFCStatexDN;
WestNFCDataxDP <= WestNFCDataxDN;
WestNFCValidxSP <= WestNFCValidxSN;
end if; end if;
end process UpdateRegxP; end process UpdateRegxP;
NorthNFCStatexP : process (NorthNFCDataxDP, NorthNFCStatexDP, NorthNFCStatexP : process (NorthNFCDataxDP, NorthNFCStatexDP,
NorthNFCValidxSP, NorthSendXOFFxSN, NorthNFCValidxSP, NorthProgEmptyxSN,
NorthSendXOFFxSP, NorthProgEmptyxSP, NorthProgFullxSN,
NorthProgFullxSP,
NorthRXFromFifoS2MxD.ReadyxS,
NorthTXUFCS2MxD.ReadyxS) is NorthTXUFCS2MxD.ReadyxS) is
begin -- process NorthNFCStatexP begin -- process NorthNFCStatexP
-- Default values -- Default values
...@@ -830,14 +834,16 @@ begin ...@@ -830,14 +834,16 @@ begin
when C_NFC_IDLE => when C_NFC_IDLE =>
NorthNFCStatexDN <= C_NFC_IS_XON; NorthNFCStatexDN <= C_NFC_IS_XON;
when C_NFC_IS_XON => when C_NFC_IS_XON =>
if NorthSendXOFFxSP = '0' and NorthSendXOFFxSN = '1' then if (NorthProgFullxSP = '0' and NorthProgFullxSN = '1') or
(NorthRXFromFifoS2MxD.ReadyxS = '0') then
NorthNFCDataxDN <= C_NFC_XOFF; NorthNFCDataxDN <= C_NFC_XOFF;
NorthNFCValidxSN <= '1'; NorthNFCValidxSN <= '1';
NorthNFCStatexDN <= C_NFC_SEND_XOFF; NorthNFCStatexDN <= C_NFC_SEND_XOFF;
end if; end if;
when C_NFC_IS_XOFF => when C_NFC_IS_XOFF =>
if NorthSendXOFFxSP = '1' and NorthSendXOFFxSN = '0' then if (NorthProgEmptyxSP = '0' and NorthProgEmptyxSN = '1') and
(NorthRXFromFifoS2MxD.ReadyxS = '1') then
NorthNFCDataxDN <= C_NFC_XON; NorthNFCDataxDN <= C_NFC_XON;
NorthNFCValidxSN <= '1'; NorthNFCValidxSN <= '1';
NorthNFCStatexDN <= C_NFC_SEND_XON; NorthNFCStatexDN <= C_NFC_SEND_XON;
...@@ -861,8 +867,10 @@ begin ...@@ -861,8 +867,10 @@ begin
end process NorthNFCStatexP; end process NorthNFCStatexP;
EastNFCStatexP : process (EastNFCDataxDP, EastNFCStatexDP, EastNFCStatexP : process (EastNFCDataxDP, EastNFCStatexDP,
EastNFCValidxSP, EastSendXOFFxSN, EastNFCValidxSP, EastProgEmptyxSN,
EastSendXOFFxSP, EastProgEmptyxSP, EastProgFullxSN,
EastProgFullxSP,
EastRXFromFifoS2MxD.ReadyxS,
EastTXUFCS2MxD.ReadyxS) is EastTXUFCS2MxD.ReadyxS) is
begin -- process EastNFCStatexP begin -- process EastNFCStatexP
-- Default values -- Default values
...@@ -874,14 +882,16 @@ begin ...@@ -874,14 +882,16 @@ begin
when C_NFC_IDLE => when C_NFC_IDLE =>
EastNFCStatexDN <= C_NFC_IS_XON; EastNFCStatexDN <= C_NFC_IS_XON;
when C_NFC_IS_XON => when C_NFC_IS_XON =>
if EastSendXOFFxSP = '0' and EastSendXOFFxSN = '1' then if (EastProgFullxSP = '0' and EastProgFullxSN = '1') or
(EastRXFromFifoS2MxD.ReadyxS = '0') then
EastNFCDataxDN <= C_NFC_XOFF; EastNFCDataxDN <= C_NFC_XOFF;
EastNFCValidxSN <= '1'; EastNFCValidxSN <= '1';
EastNFCStatexDN <= C_NFC_SEND_XOFF; EastNFCStatexDN <= C_NFC_SEND_XOFF;
end if; end if;
when C_NFC_IS_XOFF => when C_NFC_IS_XOFF =>
if EastSendXOFFxSP = '1' and EastSendXOFFxSN = '0' then if (EastProgEmptyxSP = '0' and EastProgEmptyxSN = '1') and
(EastRXFromFifoS2MxD.ReadyxS = '1') then
EastNFCDataxDN <= C_NFC_XON; EastNFCDataxDN <= C_NFC_XON;
EastNFCValidxSN <= '1'; EastNFCValidxSN <= '1';
EastNFCStatexDN <= C_NFC_SEND_XON; EastNFCStatexDN <= C_NFC_SEND_XON;
...@@ -905,8 +915,10 @@ begin ...@@ -905,8 +915,10 @@ begin
end process EastNFCStatexP; end process EastNFCStatexP;
SouthNFCStatexP : process (SouthNFCDataxDP, SouthNFCStatexDP, SouthNFCStatexP : process (SouthNFCDataxDP, SouthNFCStatexDP,
SouthNFCValidxSP, SouthSendXOFFxSN, SouthNFCValidxSP, SouthProgEmptyxSN,
SouthSendXOFFxSP, SouthProgEmptyxSP, SouthProgFullxSN,
SouthProgFullxSP,
SouthRXFromFifoS2MxD.ReadyxS,
SouthTXUFCS2MxD.ReadyxS) is SouthTXUFCS2MxD.ReadyxS) is
begin -- process SouthNFCStatexP begin -- process SouthNFCStatexP
-- Default values -- Default values
...@@ -918,14 +930,16 @@ begin ...@@ -918,14 +930,16 @@ begin
when C_NFC_IDLE => when C_NFC_IDLE =>
SouthNFCStatexDN <= C_NFC_IS_XON; SouthNFCStatexDN <= C_NFC_IS_XON;
when C_NFC_IS_XON => when C_NFC_IS_XON =>
if SouthSendXOFFxSP = '0' and SouthSendXOFFxSN = '1' then if (SouthProgFullxSP = '0' and SouthProgFullxSN = '1') or
(SouthRXFromFifoS2MxD.ReadyxS = '0') then
SouthNFCDataxDN <= C_NFC_XOFF; SouthNFCDataxDN <= C_NFC_XOFF;
SouthNFCValidxSN <= '1'; SouthNFCValidxSN <= '1';
SouthNFCStatexDN <= C_NFC_SEND_XOFF; SouthNFCStatexDN <= C_NFC_SEND_XOFF;
end if; end if;
when C_NFC_IS_XOFF => when C_NFC_IS_XOFF =>
if SouthSendXOFFxSP = '1' and SouthSendXOFFxSN = '0' then if (SouthProgEmptyxSP = '0' and SouthProgEmptyxSN = '1') and
(SouthRXFromFifoS2MxD.ReadyxS = '1') then
SouthNFCDataxDN <= C_NFC_XON; SouthNFCDataxDN <= C_NFC_XON;
SouthNFCValidxSN <= '1'; SouthNFCValidxSN <= '1';
SouthNFCStatexDN <= C_NFC_SEND_XON; SouthNFCStatexDN <= C_NFC_SEND_XON;
...@@ -949,8 +963,10 @@ begin ...@@ -949,8 +963,10 @@ begin
end process SouthNFCStatexP; end process SouthNFCStatexP;
WestNFCStatexP : process (WestNFCDataxDP, WestNFCStatexDP, WestNFCStatexP : process (WestNFCDataxDP, WestNFCStatexDP,
WestNFCValidxSP, WestSendXOFFxSN, WestNFCValidxSP, WestProgEmptyxSN,
WestSendXOFFxSP, WestProgEmptyxSP, WestProgFullxSN,
WestProgFullxSP,
WestRXFromFifoS2MxD.ReadyxS,
WestTXUFCS2MxD.ReadyxS) is WestTXUFCS2MxD.ReadyxS) is
begin -- process WestNFCStatexP begin -- process WestNFCStatexP
-- Default values -- Default values
...@@ -962,14 +978,16 @@ begin ...@@ -962,14 +978,16 @@ begin
when C_NFC_IDLE => when C_NFC_IDLE =>
WestNFCStatexDN <= C_NFC_IS_XON; WestNFCStatexDN <= C_NFC_IS_XON;
when C_NFC_IS_XON => when C_NFC_IS_XON =>
if WestSendXOFFxSP = '0' and WestSendXOFFxSN = '1' then if (WestProgFullxSP = '0' and WestProgFullxSN = '1') or
(WestRXFromFifoS2MxD.ReadyxS = '0') then
WestNFCDataxDN <= C_NFC_XOFF; WestNFCDataxDN <= C_NFC_XOFF;
WestNFCValidxSN <= '1'; WestNFCValidxSN <= '1';
WestNFCStatexDN <= C_NFC_SEND_XOFF; WestNFCStatexDN <= C_NFC_SEND_XOFF;
end if; end if;
when C_NFC_IS_XOFF => when C_NFC_IS_XOFF =>
if WestSendXOFFxSP = '1' and WestSendXOFFxSN = '0' then if (WestProgEmptyxSP = '0' and WestProgEmptyxSN = '1') and
(WestRXFromFifoS2MxD.ReadyxS = '1') then
WestNFCDataxDN <= C_NFC_XON; WestNFCDataxDN <= C_NFC_XON;
WestNFCValidxSN <= '1'; WestNFCValidxSN <= '1';
WestNFCStatexDN <= C_NFC_SEND_XON; WestNFCStatexDN <= C_NFC_SEND_XON;
......
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Please register or to comment