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White Rabbit core collection
Commits
4836ae20
Commit
4836ae20
authored
Oct 28, 2011
by
Tomasz Wlostowski
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adding mini_bone
parent
5ffc2476
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3 changed files
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-0
Manifest.py
modules/mini_bone/Manifest.py
+1
-0
mini_bone.vhd
modules/mini_bone/mini_bone.vhd
+120
-0
xmini_bone.vhd
modules/mini_bone/xmini_bone.vhd
+454
-0
No files found.
modules/mini_bone/Manifest.py
0 → 100644
View file @
4836ae20
files
=
[
"mini_bone.vhd"
,
"xmini_bone.vhd"
];
modules/mini_bone/mini_bone.vhd
0 → 100644
View file @
4836ae20
library
ieee
;
use
ieee
.
std_logic_1164
.
all
;
use
work
.
Wishbone_pkg
.
all
;
use
work
.
wr_fabric_pkg
.
all
;
entity
mini_bone
is
generic
(
g_class_mask
:
std_logic_vector
(
7
downto
0
)
:
=
x"ff"
;
g_our_ethertype
:
std_logic_vector
(
15
downto
0
)
:
=
x"a0a0"
);
port
(
clk_sys_i
:
in
std_logic
;
rst_n_i
:
in
std_logic
;
snk_cyc_i
:
in
std_logic
;
snk_stb_i
:
in
std_logic
;
snk_sel_i
:
in
std_logic_vector
(
1
downto
0
);
snk_adr_i
:
in
std_logic_vector
(
1
downto
0
);
snk_dat_i
:
in
std_logic_vector
(
15
downto
0
);
snk_we_i
:
in
std_logic
;
snk_stall_o
:
out
std_logic
;
snk_ack_o
:
out
std_logic
;
snk_err_o
:
out
std_logic
;
src_cyc_o
:
out
std_logic
;
src_stb_o
:
out
std_logic
;
src_dat_o
:
out
std_logic_vector
(
15
downto
0
);
src_adr_o
:
out
std_logic_vector
(
1
downto
0
);
src_we_o
:
out
std_logic
;
src_ack_i
:
in
std_logic
;
src_err_i
:
in
std_logic
;
src_sel_o
:
out
std_logic_vector
(
1
downto
0
);
src_stall_i
:
in
std_logic
;
master_cyc_o
:
out
std_logic
;
master_we_o
:
out
std_logic
;
master_stb_o
:
out
std_logic
;
master_sel_o
:
out
std_logic_vector
(
3
downto
0
);
master_adr_o
:
out
std_logic_vector
(
31
downto
0
);
master_dat_o
:
out
std_logic_vector
(
31
downto
0
);
master_dat_i
:
in
std_logic_vector
(
31
downto
0
);
master_ack_i
:
in
std_logic
);
end
mini_bone
;
architecture
wrapper
of
mini_bone
is
component
xmini_bone
generic
(
g_class_mask
:
std_logic_vector
(
7
downto
0
);
g_our_ethertype
:
std_logic_vector
(
15
downto
0
));
port
(
clk_sys_i
:
in
std_logic
;
rst_n_i
:
in
std_logic
;
src_o
:
out
t_wrf_source_out
;
src_i
:
in
t_wrf_source_in
;
snk_o
:
out
t_wrf_sink_out
;
snk_i
:
in
t_wrf_sink_in
;
master_o
:
out
t_wishbone_master_out
;
master_i
:
in
t_wishbone_master_in
);
end
component
;
signal
src_out
:
t_wrf_source_out
;
signal
src_in
:
t_wrf_source_in
;
signal
snk_out
:
t_wrf_sink_out
;
signal
snk_in
:
t_wrf_sink_in
;
signal
master_out
:
t_wishbone_master_out
;
signal
master_in
:
t_wishbone_master_in
;
begin
-- wrapper
U_Wrapped_MB
:
xmini_bone
generic
map
(
g_class_mask
=>
g_class_mask
,
g_our_ethertype
=>
g_our_ethertype
)
port
map
(
clk_sys_i
=>
clk_sys_i
,
rst_n_i
=>
rst_n_i
,
src_o
=>
src_out
,
src_i
=>
src_in
,
snk_o
=>
snk_out
,
snk_i
=>
snk_in
,
master_o
=>
master_out
,
master_i
=>
master_in
);
src_cyc_o
<=
src_out
.
cyc
;
src_stb_o
<=
src_out
.
stb
;
src_we_o
<=
src_out
.
we
;
src_adr_o
<=
src_out
.
adr
;
src_dat_o
<=
src_out
.
dat
;
src_sel_o
<=
src_out
.
sel
;
src_in
.
ack
<=
src_ack_i
;
src_in
.
stall
<=
src_stall_i
;
snk_in
.
cyc
<=
snk_cyc_i
;
snk_in
.
stb
<=
snk_stb_i
;
snk_in
.
we
<=
snk_we_i
;
snk_in
.
sel
<=
snk_sel_i
;
snk_in
.
adr
<=
snk_adr_i
;
snk_in
.
dat
<=
snk_dat_i
;
snk_ack_o
<=
snk_out
.
ack
;
snk_stall_o
<=
snk_out
.
stall
;
master_cyc_o
<=
master_out
.
cyc
;
master_stb_o
<=
master_out
.
stb
;
master_we_o
<=
master_out
.
we
;
master_sel_o
<=
master_out
.
sel
;
master_adr_o
<=
master_out
.
adr
;
master_dat_o
<=
master_out
.
dat
;
master_in
.
dat
<=
master_dat_i
;
master_in
.
ack
<=
master_ack_i
;
end
wrapper
;
modules/mini_bone/xmini_bone.vhd
0 → 100644
View file @
4836ae20
library
ieee
;
use
ieee
.
std_logic_1164
.
all
;
use
ieee
.
numeric_std
.
all
;
use
work
.
wishbone_pkg
.
all
;
use
work
.
wr_fabric_pkg
.
all
;
entity
xmini_bone
is
generic
(
g_class_mask
:
std_logic_vector
(
7
downto
0
);
g_our_ethertype
:
std_logic_vector
(
15
downto
0
));
port
(
clk_sys_i
:
in
std_logic
;
rst_n_i
:
in
std_logic
;
-- WBP Master (TX)
src_o
:
out
t_wrf_source_out
;
src_i
:
in
t_wrf_source_in
;
-- WBP Slave (RX)
snk_o
:
out
t_wrf_sink_out
;
snk_i
:
in
t_wrf_sink_in
;
--
master_o
:
out
t_wishbone_master_out
;
master_i
:
in
t_wishbone_master_in
);
end
xmini_bone
;
architecture
behavioral
of
xmini_bone
is
type
t_state
is
(
IDLE
,
RX_STATUS
,
RX_DATA
,
RX_CHECK
,
RX_DROP
,
RX_WAIT_EOP
,
WB_ISSUE
,
TX_START_PACKET
,
TX_STATUS
,
TX_DATA
,
TX_FINISH_PACKET
,
TX_STALL
);
function
f_sl
(
state
:
t_state
)
return
std_logic_vector
is
begin
case
state
is
when
IDLE
=>
return
"0000"
;
when
RX_STATUS
=>
return
"0001"
;
when
RX_DATA
=>
return
"0010"
;
when
RX_CHECK
=>
return
"0011"
;
when
RX_DROP
=>
return
"0100"
;
when
RX_WAIT_EOP
=>
return
"0101"
;
when
WB_ISSUE
=>
return
"0110"
;
when
TX_START_PACKET
=>
return
"1011"
;
when
TX_DATA
=>
return
"0111"
;
when
TX_FINISH_PACKET
=>
return
"1000"
;
when
TX_STATUS
=>
return
"1001"
;
when
TX_STALL
=>
return
"1010"
;
end
case
;
return
"0000"
;
end
f_sl
;
signal
snk_out
:
t_wrf_sink_out
;
signal
src_out
:
t_wrf_source_out
;
signal
trans_addr
:
std_logic_vector
(
31
downto
0
);
signal
trans_wdata
:
std_logic_vector
(
31
downto
0
);
signal
trans_rdata
:
std_logic_vector
(
31
downto
0
);
signal
trans_rx_hdr
:
std_logic_vector
(
15
downto
0
);
alias
trans_sel
is
trans_rx_hdr
(
3
downto
0
);
alias
trans_we
is
trans_rx_hdr
(
4
);
signal
trans_tx_hdr
:
std_logic_vector
(
15
downto
0
);
alias
trans_readback
is
trans_tx_hdr
(
0
);
alias
trans_error
is
trans_tx_hdr
(
1
);
signal
rx_remote_mac
:
std_logic_vector
(
47
downto
0
);
signal
rx_ethertype
:
std_logic_vector
(
15
downto
0
);
signal
state
:
t_state
;
signal
snk_offset
:
std_logic_vector
(
31
downto
0
);
signal
src_offset
:
std_logic_vector
(
31
downto
0
);
signal
d_valid
:
std_logic
;
signal
d_status
:
std_logic
;
signal
d_rx_error
:
std_logic
;
signal
decoded_status
:
t_wrf_status_reg
;
signal
stall_int
:
std_logic
;
signal
src_ack_count
:
unsigned
(
4
downto
0
);
signal
s_zeroes
:
std_logic_vector
(
15
downto
0
)
:
=
x"0000"
;
signal
s_our_ethertype
:
std_logic_vector
(
15
downto
0
)
:
=
g_our_ethertype
;
function
f_sl
(
x
:
boolean
)
return
std_logic
is
begin
if
(
x
)
then
return
'1'
;
else
return
'0'
;
end
if
;
end
f_sl
;
procedure
f_extract_rx
(
signal
q
:
out
std_logic_vector
;
signal
d
:
in
std_logic_vector
;
signal
d_valid
:
in
std_logic
;
offset
:
integer
)
is
begin
if
(
snk_offset
(
offset
)
=
'1'
and
d_valid
=
'1'
)
then
q
<=
d
;
end
if
;
end
f_extract_rx
;
signal
tx_ser_counter
:
unsigned
(
6
downto
0
);
procedure
f_serialize_tx
(
signal
q
:
out
std_logic_vector
;
signal
x
:
in
std_logic_vector
;
offset
:
integer
;
cnt
:
unsigned
)
is
begin
if
(
offset
>=
0
and
cnt
=
to_unsigned
(
offset
,
cnt
'length
))
then
q
<=
x
;
end
if
;
end
f_serialize_tx
;
component
chipscope_ila
port
(
CONTROL
:
inout
std_logic_vector
(
35
downto
0
);
CLK
:
in
std_logic
;
TRIG0
:
in
std_logic_vector
(
31
downto
0
);
TRIG1
:
in
std_logic_vector
(
31
downto
0
);
TRIG2
:
in
std_logic_vector
(
31
downto
0
);
TRIG3
:
in
std_logic_vector
(
31
downto
0
));
end
component
;
component
chipscope_icon
port
(
CONTROL0
:
inout
std_logic_vector
(
35
downto
0
));
end
component
;
signal
CONTROL
:
std_logic_vector
(
35
downto
0
);
signal
CLK
:
std_logic
;
signal
TRIG0
:
std_logic_vector
(
31
downto
0
);
signal
TRIG1
:
std_logic_vector
(
31
downto
0
);
signal
TRIG2
:
std_logic_vector
(
31
downto
0
);
signal
TRIG3
:
std_logic_vector
(
31
downto
0
);
begin
-- behavioral
trans_tx_hdr
(
15
downto
2
)
<=
(
others
=>
'0'
);
decoded_status
<=
f_unmarshall_wrf_status
(
snk_i
.
dat
);
d_valid
<=
'1'
when
(
snk_i
.
cyc
and
snk_i
.
we
and
snk_i
.
stb
)
=
'1'
and
(
snk_i
.
adr
=
c_WRF_DATA
)
else
'0'
;
d_status
<=
'1'
when
(
snk_i
.
cyc
and
snk_i
.
we
and
snk_i
.
stb
)
=
'1'
and
(
snk_i
.
adr
=
c_WRF_STATUS
)
else
'0'
;
d_rx_error
<=
d_status
and
decoded_status
.
error
;
p_snk_gen_ack
:
process
(
clk_sys_i
)
begin
if
rising_edge
(
clk_sys_i
)
then
if
rst_n_i
=
'0'
then
snk_out
.
ack
<=
'0'
;
else
snk_out
.
ack
<=
snk_i
.
stb
and
snk_i
.
cyc
and
snk_i
.
we
and
not
snk_out
.
stall
;
end
if
;
end
if
;
end
process
;
p_offset_sreg
:
process
(
clk_sys_i
)
begin
if
rising_edge
(
clk_sys_i
)
then
if
rst_n_i
=
'0'
then
snk_offset
<=
(
0
=>
'1'
,
others
=>
'0'
);
src_offset
<=
(
0
=>
'1'
,
others
=>
'0'
);
else
if
(
snk_i
.
cyc
=
'0'
)
then
snk_offset
(
0
)
<=
'1'
;
snk_offset
(
snk_offset
'left
downto
1
)
<=
(
others
=>
'0'
);
elsif
(
d_valid
=
'1'
)
then
snk_offset
<=
snk_offset
(
snk_offset
'left
-1
downto
0
)
&
'0'
;
end
if
;
if
(
src_out
.
cyc
=
'0'
)
then
src_offset
<=
(
0
=>
'1'
,
others
=>
'0'
);
elsif
(
src_i
.
stall
=
'0'
and
src_out
.
stb
=
'1'
)
then
src_offset
<=
src_offset
(
src_offset
'left
-1
downto
0
)
&
'0'
;
end
if
;
end
if
;
end
if
;
end
process
;
p_src_count_acks
:
process
(
clk_sys_i
)
begin
if
rising_edge
(
clk_sys_i
)
then
if
rst_n_i
=
'0'
then
src_ack_count
<=
(
others
=>
'0'
);
else
if
(
src_out
.
cyc
=
'0'
)
then
src_ack_count
<=
(
others
=>
'0'
);
elsif
(
src_i
.
ack
=
'1'
)
then
src_ack_count
<=
src_ack_count
+
1
;
end
if
;
end
if
;
end
if
;
end
process
;
p_fsm
:
process
(
clk_sys_i
)
variable
tx_offset
:
integer
;
begin
if
rising_edge
(
clk_sys_i
)
then
if
rst_n_i
=
'0'
then
state
<=
IDLE
;
stall_int
<=
'0'
;
master_o
.
cyc
<=
'0'
;
master_o
.
stb
<=
'0'
;
src_out
.
cyc
<=
'0'
;
src_out
.
stb
<=
'0'
;
src_out
.
we
<=
'1'
;
src_out
.
sel
<=
"11"
;
src_out
.
adr
<=
(
others
=>
'0'
);
src_out
.
dat
<=
(
others
=>
'0'
);
trans_readback
<=
'0'
;
trans_we
<=
'0'
;
trans_rdata
<=
(
others
=>
'0'
);
trans_wdata
<=
(
others
=>
'0'
);
trans_addr
<=
(
others
=>
'0'
);
trans_sel
<=
(
others
=>
'0'
);
trans_error
<=
'0'
;
rx_remote_mac
<=
(
others
=>
'0'
);
rx_ethertype
<=
(
others
=>
'0'
);
tx_ser_counter
<=
(
others
=>
'0'
);
else
case
state
is
when
IDLE
=>
stall_int
<=
'0'
;
tx_ser_counter
<=
(
others
=>
'0'
);
if
(
snk_i
.
cyc
=
'1'
)
then
state
<=
RX_DATA
;
--STATUS;
end
if
;
--fixme: RX status decoding in WBP mux is broken
--when RX_STATUS =>
-- if(d_rx_error = '1' or snk_i.cyc = '0') then
-- state <= RX_DROP;
-- elsif(d_status = '1') then
-- if((decoded_status.match_class and g_class_mask) /= x"00") then
-- state <= RX_DATA; -- rep
-- else
-- state <= RX_DATA;
-- end if;
-- end if;
when
RX_DATA
=>
f_extract_rx
(
rx_remote_mac
(
47
downto
32
),
snk_i
.
dat
,
d_valid
,
3
);
f_extract_rx
(
rx_remote_mac
(
31
downto
16
),
snk_i
.
dat
,
d_valid
,
4
);
f_extract_rx
(
rx_remote_mac
(
15
downto
0
),
snk_i
.
dat
,
d_valid
,
5
);
f_extract_rx
(
rx_ethertype
,
snk_i
.
dat
,
d_valid
,
6
);
f_extract_rx
(
trans_rx_hdr
,
snk_i
.
dat
,
d_valid
,
7
);
f_extract_rx
(
trans_addr
(
31
downto
16
),
snk_i
.
dat
,
d_valid
,
8
);
f_extract_rx
(
trans_addr
(
15
downto
0
),
snk_i
.
dat
,
d_valid
,
9
);
f_extract_rx
(
trans_wdata
(
31
downto
16
),
snk_i
.
dat
,
d_valid
,
10
);
f_extract_rx
(
trans_wdata
(
15
downto
0
),
snk_i
.
dat
,
d_valid
,
11
);
if
(
d_rx_error
=
'1'
or
snk_i
.
cyc
=
'0'
)
then
state
<=
RX_DROP
;
elsif
(
d_valid
=
'1'
and
snk_offset
(
12
)
=
'1'
)
then
state
<=
RX_WAIT_EOP
;
end
if
;
when
RX_WAIT_EOP
=>
if
(
d_rx_error
=
'1'
)
then
state
<=
RX_DROP
;
elsif
(
snk_i
.
cyc
=
'0'
)
then
-- end-of-packet?
stall_int
<=
'1'
;
-- stop reception while the cycle is issued
state
<=
RX_CHECK
;
end
if
;
when
RX_CHECK
=>
if
(
rx_ethertype
=
g_our_ethertype
)
then
state
<=
WB_ISSUE
;
else
state
<=
RX_DROP
;
end
if
;
when
WB_ISSUE
=>
if
(
master_i
.
ack
=
'0'
)
then
master_o
.
cyc
<=
'1'
;
master_o
.
stb
<=
'1'
;
else
master_o
.
cyc
<=
'0'
;
master_o
.
stb
<=
'0'
;
trans_rdata
<=
master_i
.
dat
;
state
<=
TX_START_PACKET
;
end
if
;
trans_readback
<=
not
trans_we
;
trans_error
<=
'0'
;
when
TX_START_PACKET
=>
if
(
src_i
.
stall
=
'0'
)
then
state
<=
TX_STATUS
;
src_out
.
stb
<=
'1'
;
src_out
.
cyc
<=
'1'
;
src_out
.
stb
<=
'1'
;
src_out
.
adr
<=
c_WRF_STATUS
;
src_out
.
dat
<=
(
others
=>
'0'
);
else
src_out
.
stb
<=
'0'
;
src_out
.
cyc
<=
'0'
;
end
if
;
when
TX_STATUS
=>
if
(
src_i
.
stall
=
'0'
)
then
src_out
.
stb
<=
'1'
;
src_out
.
adr
<=
c_WRF_DATA
;
state
<=
TX_DATA
;
f_serialize_tx
(
src_out
.
dat
,
rx_remote_mac
(
47
downto
32
),
0
,
tx_ser_counter
);
end
if
;
when
TX_DATA
=>
src_out
.
stb
<=
'1'
;
if
(
src_i
.
stall
=
'1'
)
then
tx_offset
:
=
0
;
else
tx_offset
:
=
-1
;
end
if
;
f_serialize_tx
(
src_out
.
dat
,
rx_remote_mac
(
47
downto
32
),
tx_offset
+
0
,
tx_ser_counter
);
f_serialize_tx
(
src_out
.
dat
,
rx_remote_mac
(
31
downto
16
),
tx_offset
+
1
,
tx_ser_counter
);
f_serialize_tx
(
src_out
.
dat
,
rx_remote_mac
(
15
downto
0
),
tx_offset
+
2
,
tx_ser_counter
);
-- DST MAC
f_serialize_tx
(
src_out
.
dat
,
s_zeroes
,
tx_offset
+
3
,
tx_ser_counter
);
f_serialize_tx
(
src_out
.
dat
,
s_zeroes
,
tx_offset
+
4
,
tx_ser_counter
);
f_serialize_tx
(
src_out
.
dat
,
s_zeroes
,
tx_offset
+
5
,
tx_ser_counter
);
f_serialize_tx
(
src_out
.
dat
,
s_our_ethertype
,
tx_offset
+
6
,
tx_ser_counter
);
f_serialize_tx
(
src_out
.
dat
,
trans_tx_hdr
,
tx_offset
+
7
,
tx_ser_counter
);
f_serialize_tx
(
src_out
.
dat
,
trans_rdata
(
31
downto
16
),
tx_offset
+
8
,
tx_ser_counter
);
f_serialize_tx
(
src_out
.
dat
,
trans_rdata
(
15
downto
0
),
tx_offset
+
9
,
tx_ser_counter
);
if
(
src_i
.
stall
=
'0'
)
then
tx_ser_counter
<=
tx_ser_counter
+
1
;
end
if
;
if
(
tx_ser_counter
=
30
and
src_i
.
stall
=
'0'
)
then
state
<=
TX_FINISH_PACKET
;
src_out
.
stb
<=
'0'
;
end
if
;
when
TX_FINISH_PACKET
=>
if
(
src_ack_count
=
31
)
then
src_out
.
stb
<=
'0'
;
src_out
.
cyc
<=
'0'
;
state
<=
IDLE
;
end
if
;
when
RX_DROP
=>
if
(
snk_i
.
cyc
=
'0'
)
then
state
<=
IDLE
;
end
if
;
when
others
=>
null
;
end
case
;
end
if
;
end
if
;
end
process
;
master_o
.
dat
<=
trans_wdata
;
master_o
.
adr
<=
trans_addr
;
master_o
.
we
<=
trans_we
;
master_o
.
sel
<=
trans_sel
;
snk_o
<=
snk_out
;
snk_out
.
err
<=
'0'
;
snk_out
.
rty
<=
'0'
;
snk_out
.
stall
<=
stall_int
or
(
snk_i
.
cyc
and
snk_i
.
stb
and
f_sl
(
state
=
IDLE
));
src_o
<=
src_out
;
chipscope_ila_1
:
chipscope_ila
port
map
(
CONTROL
=>
CONTROL
,
CLK
=>
clk_sys_i
,
TRIG0
=>
TRIG0
,
TRIG1
=>
TRIG1
,
TRIG2
=>
TRIG2
,
TRIG3
=>
TRIG3
);
chipscope_icon_1
:
chipscope_icon
port
map
(
CONTROL0
=>
CONTROL
);
TRIG0
(
15
downto
0
)
<=
src_out
.
dat
;
trig0
(
17
downto
16
)
<=
src_out
.
adr
;
trig0
(
19
downto
18
)
<=
src_out
.
sel
;
trig0
(
20
)
<=
src_out
.
cyc
;
trig0
(
21
)
<=
src_out
.
stb
;
trig0
(
22
)
<=
src_out
.
we
;
trig0
(
23
)
<=
src_i
.
ack
;
trig0
(
24
)
<=
src_i
.
stall
;
trig0
(
26
)
<=
src_i
.
err
;
trig1
(
4
)
<=
d_valid
;
trig1
(
5
)
<=
d_status
;
trig1
(
6
)
<=
d_rx_error
;
trig1
(
3
downto
0
)
<=
f_sl
(
state
);
trig1
(
31
downto
16
)
<=
rx_ethertype
;
trig3
<=
snk_offset
;
TRIG2
(
15
downto
0
)
<=
snk_i
.
dat
;
trig2
(
17
downto
16
)
<=
snk_i
.
adr
;
trig2
(
19
downto
18
)
<=
snk_i
.
sel
;
trig2
(
20
)
<=
snk_i
.
cyc
;
trig2
(
21
)
<=
snk_i
.
stb
;
trig2
(
22
)
<=
snk_i
.
we
;
trig2
(
23
)
<=
snk_out
.
ack
;
trig2
(
24
)
<=
snk_out
.
stall
;
trig2
(
26
)
<=
snk_out
.
err
;
end
behavioral
;
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