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icache: Reformat icache

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Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2019-09-25 16:50:24 +10:00
parent 3a2c4b8978
commit fb01dc8a90
1 changed files with 24 additions and 24 deletions
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48
icache.vhdl
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@ -140,33 +140,33 @@ begin
r.w.we <= '0';
case r.state is
when IDLE =>
if read_miss = true then
r.state <= WAIT_ACK;
r.store_word <= 0;
r.store_index <= read_index;
when IDLE =>
if read_miss = true then
r.state <= WAIT_ACK;
r.store_word <= 0;
r.store_index <= read_index;
tags(read_index) <= read_tag;
tags_valid(read_index) <= '0';
tags(read_index) <= read_tag;
tags_valid(read_index) <= '0';
r.w.adr <= i_in.addr(63 downto OFFSET_BITS) & (OFFSET_BITS-1 downto 0 => '0');
r.w.cyc <= '1';
r.w.stb <= '1';
end if;
when WAIT_ACK =>
if wishbone_in.ack = '1' then
cachelines(r.store_index)((r.store_word+1)*64-1 downto ((r.store_word)*64)) <= wishbone_in.dat;
r.store_word <= r.store_word + 1;
r.w.adr <= i_in.addr(63 downto OFFSET_BITS) & (OFFSET_BITS-1 downto 0 => '0');
r.w.cyc <= '1';
r.w.stb <= '1';
end if;
when WAIT_ACK =>
if wishbone_in.ack = '1' then
cachelines(r.store_index)((r.store_word+1)*64-1 downto ((r.store_word)*64)) <= wishbone_in.dat;
r.store_word <= r.store_word + 1;
if r.store_word = (LINE_SIZE_DW-1) then
r.state <= IDLE;
tags_valid(r.store_index) <= '1';
r.w.cyc <= '0';
r.w.stb <= '0';
else
r.w.adr(OFFSET_BITS-1 downto 3) <= std_ulogic_vector(to_unsigned(r.store_word+1, OFFSET_BITS-3));
end if;
end if;
if r.store_word = (LINE_SIZE_DW-1) then
r.state <= IDLE;
tags_valid(r.store_index) <= '1';
r.w.cyc <= '0';
r.w.stb <= '0';
else
r.w.adr(OFFSET_BITS-1 downto 3) <= std_ulogic_vector(to_unsigned(r.store_word+1, OFFSET_BITS-3));
end if;
end if;
end case;
end if;
end process;