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- renamed signal names

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- receiver commands:
  packet request : sets fill pointer to next packet from queue
  packet free       : removes packet from queue
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git-svn-id: http://moon:8086/svn/vhdl/trunk@828 cc03376c-175c-47c8-b038-4cd826a8556b
This commit is contained in:
jens
2010-03-26 09:43:23 +00:00
parent 7fd7987056
commit 03cbf45996
1 changed files with 9 additions and 11 deletions
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lib/emac/src/emac_rx.vhd
+9 -11
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@@ -120,9 +120,9 @@ ARCHITECTURE behavior OF emac_rx IS
begin
ctrl_out.rx_size <= cmd_fifo_dout(31 downto 16);
ctrl_out.rx_vld <= not cmd_fifo_empty;
ctrl_out.pkt_avail <= not cmd_fifo_empty;
ctrl_out.rx_er <= mii_rx_er;
ctrl_out.ram_ovf <= xfer_ram_full;
ctrl_out.pkt_lost <= xfer_ram_full;
dout <= ram_dout_a;
@@ -140,7 +140,7 @@ begin
ram_we_b <= xfer_cnt_adv;
cmd_fifo_we <= commit_en;
cmd_fifo_re <= uncommit_en;
cmd_fifo_re <= ctrl_in.pkt_free_en;
cmd_fifo_din <= "0000" & resize(byte_count_reg_s, 16) & resize(xfer_base, 16);
------------------------------------------------------------------
@@ -157,13 +157,12 @@ host_state_next:
end process;
host_state:
process(host_s, cmd_fifo_empty, ctrl_in.data_read, ctrl_in.uncommit)
process(host_s, cmd_fifo_empty, ctrl_in.pkt_read_en, ctrl_in.pkt_req_en)
begin
flush_en <= '0';
fill_ptr_set <= '0';
fill_ptr_adv <= '0';
uncommit_en <= '0';
host_sn <= host_s;
@@ -190,13 +189,12 @@ host_state:
host_sn <= host_fill;
when host_fill =>
fill_ptr_adv <= ctrl_in.data_read;
if ctrl_in.uncommit = '1' then
fill_ptr_adv <= ctrl_in.pkt_read_en;
if ctrl_in.pkt_req_en = '1' then
host_sn <= host_uncommit;
end if;
when host_uncommit =>
uncommit_en <= '1';
host_sn <= host_idle;
when others =>
@@ -212,10 +210,10 @@ fill_pointer:
process(clk)
begin
if rising_edge(clk) then
dout_vld <= ctrl_in.data_read;
if fill_ptr_set = '1' then
dout_vld <= ctrl_in.pkt_read_en;
if ctrl_in.pkt_req_en = '1' then
fill_ptr <= resize(cmd_fifo_dout(15 downto 0), word_ptr_t'length);
elsif fill_ptr_adv = '1' then
elsif ctrl_in.pkt_read_en = '1' then
fill_ptr <= fill_ptr + 1;
end if;
end if;