| Line 736... |
Line 736... |
-- Timeout logic.
|
-- Timeout logic.
|
-----------------------------------------------------------------------------
|
-----------------------------------------------------------------------------
|
process(areset_n, clk)
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process(areset_n, clk)
|
begin
|
begin
|
if (areset_n = '0') then
|
if (areset_n = '0') then
|
|
timeSentElapsed <= (others=>'0');
|
|
timeSentDelta <= (others=>'0');
|
timeCurrent <= (others=>'0');
|
timeCurrent <= (others=>'0');
|
elsif (clk'event and clk = '1') then
|
elsif (clk'event and clk = '1') then
|
|
if (timeSentEnable = '0') then
|
|
timeSentElapsed <= unsigned(timeCurrent) - unsigned(timeSentReadData);
|
|
timeSentDelta <= unsigned('0' & portLinkTimeout_i) - timeSentElapsed;
|
|
else
|
|
timeSentElapsed <= (others=>'0');
|
|
timeSentDelta <= (others=>'0');
|
|
end if;
|
timeCurrent <= std_logic_vector(unsigned(timeCurrent) + 1);
|
timeCurrent <= std_logic_vector(unsigned(timeCurrent) + 1);
|
end if;
|
end if;
|
end process;
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end process;
|
|
|
timeSentElapsed <= unsigned(timeCurrent) - unsigned(timeSentReadData);
|
|
timeSentDelta <= unsigned('0' & portLinkTimeout_i) - timeSentElapsed;
|
|
timeSentExpired <= timeSentDelta(TIMEOUT_WIDTH);
|
timeSentExpired <= timeSentDelta(TIMEOUT_WIDTH);
|
|
|
timeSentEnable <= (not txFull_i) and (timeSentSet or timeSentReset);
|
timeSentEnable <= (not txFull_i) and (timeSentSet or timeSentReset);
|
timeSentWriteAddress <= ackIdWindowCurrent when timeSentSet = '1' else
|
timeSentWriteAddress <= ackIdWindowCurrent when timeSentSet = '1' else
|
ackIdCurrent;
|
ackIdCurrent;
|
| Line 1346... |
Line 1353... |
|
|
frameState_o <= frameState_i;
|
frameState_o <= frameState_i;
|
frameWordCounter_o <= frameWordCounter_i;
|
frameWordCounter_o <= frameWordCounter_i;
|
frameContent_o <= frameContent_i;
|
frameContent_o <= frameContent_i;
|
ackIdWindow_o <= ackIdWindow_i;
|
ackIdWindow_o <= ackIdWindow_i;
|
|
maintenanceClass_o <= maintenanceClass_i;
|
|
|
timeSentSet_o <= '0';
|
timeSentSet_o <= '0';
|
|
|
symbolControlRestartOut <= '0';
|
symbolControlRestartOut <= '0';
|
symbolControlLinkRequestOut <= '0';
|
symbolControlLinkRequestOut <= '0';
|
| Line 1410... |
Line 1418... |
if ((sendRestartFromRetry = '0') and (sendLinkRequest = '0') and
|
if ((sendRestartFromRetry = '0') and (sendLinkRequest = '0') and
|
(outputErrorStopped_i = '0')) then
|
(outputErrorStopped_i = '0')) then
|
-- Check if a frame transfer is in progress.
|
-- Check if a frame transfer is in progress.
|
-- REMARK: Hold any data symbol if there is a pending symbol from the
|
-- REMARK: Hold any data symbol if there is a pending symbol from the
|
-- receiver side...
|
-- receiver side...
|
|
|
-- REMARK: This statemachine does not work... one tick ahead is needed...
|
|
case frameState_i is
|
case frameState_i is
|
|
|
when FRAME_IDLE =>
|
when FRAME_IDLE =>
|
---------------------------------------------------------------
|
---------------------------------------------------------------
|
-- No frame has been started.
|
-- No frame has been started.
|
| Line 2929... |
Line 2935... |
|
|
signal readAddress : std_logic_vector(DEPTH_WIDTH-1 downto 0);
|
signal readAddress : std_logic_vector(DEPTH_WIDTH-1 downto 0);
|
signal readAddressInc : std_logic_vector(DEPTH_WIDTH-1 downto 0);
|
signal readAddressInc : std_logic_vector(DEPTH_WIDTH-1 downto 0);
|
signal writeAddress : std_logic_vector(DEPTH_WIDTH-1 downto 0);
|
signal writeAddress : std_logic_vector(DEPTH_WIDTH-1 downto 0);
|
signal writeAddressInc : std_logic_vector(DEPTH_WIDTH-1 downto 0);
|
signal writeAddressInc : std_logic_vector(DEPTH_WIDTH-1 downto 0);
|
|
|
|
signal change : std_logic;
|
begin
|
begin
|
|
|
-- REMARK: Remove full here...
|
-- REMARK: Remove full here...
|
empty_o <= empty;
|
empty_o <= empty;
|
full_o <= full;
|
full_o <= full;
|
