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Gowin. Implement byte enable. 

Enable write port with byte enables for BSRAM primitives.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
This commit is contained in:
YRabbit 2026-01-03 17:42:49 +10:00
parent 64a933d77b
commit ea90f54783
3 changed files with 32 additions and 10 deletions
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6
techlibs/gowin/brams.txt
View File

@ -2,6 +2,7 @@ ram block $__GOWIN_SP_ {
abits 14;
widths 1 2 4 9 18 36 per_port;
cost 128;
byte 9;
init no_undef;
port srsw "A" {
clock posedge;
@ -24,6 +25,7 @@ ram block $__GOWIN_SP_ {
rdwr old;
}
}
wrbe_separate;
}
}
@ -31,6 +33,7 @@ ram block $__GOWIN_DP_ {
abits 14;
widths 1 2 4 9 18 per_port;
cost 128;
byte 9;
init no_undef;
port srsw "A" "B" {
clock posedge;
@ -53,6 +56,7 @@ ram block $__GOWIN_DP_ {
rdwr old;
}
}
wrbe_separate;
}
}
@ -60,6 +64,7 @@ ram block $__GOWIN_SDP_ {
abits 14;
widths 1 2 4 9 18 36 per_port;
cost 128;
byte 9;
init no_undef;
port sr "R" {
clock posedge;
@ -75,5 +80,6 @@ ram block $__GOWIN_SDP_ {
port sw "W" {
clock posedge;
clken;
wrbe_separate;
}
}

18
techlibs/gowin/brams_map.v
View File

@ -14,7 +14,7 @@
`define x8_width(width) (width / 9 * 8 + width % 9)
`define x8_rd_data(data) {1'bx, data[31:24], 1'bx, data[23:16], 1'bx, data[15:8], 1'bx, data[7:0]}
`define x8_wr_data(data) {data[34:27], data[25:18], data[16:9], data[7:0]}
`define addrbe_always(width, addr) (width < 18 ? addr : width == 18 ? {addr[13:4], 4'b0011} : {addr[13:5], 5'b01111})
`define addrbe(width, addr, w_be) (width < 18 ? addr : width == 18 ? {addr[13:4], 2'b00, w_be[1:0]} : {addr[13:5], 1'b0, w_be[3:0]})
`define INIT(func) \
@ -90,6 +90,7 @@ parameter OPTION_RESET_MODE = "SYNC";
parameter PORT_A_WIDTH = 36;
parameter PORT_A_OPTION_WRITE_MODE = 0;
parameter PORT_A_WR_BE_WIDTH = 4;
input PORT_A_CLK;
input PORT_A_CLK_EN;
@ -97,13 +98,14 @@ input PORT_A_WR_EN;
input PORT_A_RD_SRST;
input PORT_A_RD_ARST;
input [13:0] PORT_A_ADDR;
input [PORT_A_WR_BE_WIDTH-1:0] PORT_A_WR_BE;
input [PORT_A_WIDTH-1:0] PORT_A_WR_DATA;
output [PORT_A_WIDTH-1:0] PORT_A_RD_DATA;
`DEF_FUNCS
wire RST = OPTION_RESET_MODE == "SYNC" ? PORT_A_RD_SRST : PORT_A_RD_ARST;
wire [13:0] AD = `addrbe_always(PORT_A_WIDTH, PORT_A_ADDR);
wire [13:0] AD = `addrbe(PORT_A_WIDTH, PORT_A_ADDR, PORT_A_WR_BE);
generate
@ -173,9 +175,11 @@ parameter OPTION_RESET_MODE = "SYNC";
parameter PORT_A_WIDTH = 18;
parameter PORT_A_OPTION_WRITE_MODE = 0;
parameter PORT_A_WR_BE_WIDTH = 4;
parameter PORT_B_WIDTH = 18;
parameter PORT_B_OPTION_WRITE_MODE = 0;
parameter PORT_B_WR_BE_WIDTH = 4;
input PORT_A_CLK;
input PORT_A_CLK_EN;
@ -183,6 +187,7 @@ input PORT_A_WR_EN;
input PORT_A_RD_SRST;
input PORT_A_RD_ARST;
input [13:0] PORT_A_ADDR;
input [PORT_A_WR_BE_WIDTH-1:0] PORT_A_WR_BE;
input [PORT_A_WIDTH-1:0] PORT_A_WR_DATA;
output [PORT_A_WIDTH-1:0] PORT_A_RD_DATA;
@ -192,6 +197,7 @@ input PORT_B_WR_EN;
input PORT_B_RD_SRST;
input PORT_B_RD_ARST;
input [13:0] PORT_B_ADDR;
input [PORT_B_WR_BE_WIDTH-1:0] PORT_B_WR_BE;
input [PORT_A_WIDTH-1:0] PORT_B_WR_DATA;
output [PORT_A_WIDTH-1:0] PORT_B_RD_DATA;
@ -199,8 +205,8 @@ output [PORT_A_WIDTH-1:0] PORT_B_RD_DATA;
wire RSTA = OPTION_RESET_MODE == "SYNC" ? PORT_A_RD_SRST : PORT_A_RD_ARST;
wire RSTB = OPTION_RESET_MODE == "SYNC" ? PORT_B_RD_SRST : PORT_B_RD_ARST;
wire [13:0] ADA = `addrbe_always(PORT_A_WIDTH, PORT_A_ADDR);
wire [13:0] ADB = `addrbe_always(PORT_B_WIDTH, PORT_B_ADDR);
wire [13:0] ADA = `addrbe(PORT_A_WIDTH, PORT_A_ADDR, PORT_B_WR_BE);
wire [13:0] ADB = `addrbe(PORT_B_WIDTH, PORT_B_ADDR, PORT_B_WR_BE);
generate
@ -306,6 +312,7 @@ parameter OPTION_RESET_MODE = "SYNC";
parameter PORT_R_WIDTH = 18;
parameter PORT_W_WIDTH = 18;
parameter PORT_W_WR_BE_WIDTH=4;
input PORT_R_CLK;
input PORT_R_CLK_EN;
@ -318,12 +325,13 @@ input PORT_W_CLK;
input PORT_W_CLK_EN;
input PORT_W_WR_EN;
input [13:0] PORT_W_ADDR;
input [PORT_W_WR_BE_WIDTH-1:0] PORT_W_WR_BE;
input [PORT_W_WIDTH-1:0] PORT_W_WR_DATA;
`DEF_FUNCS
wire RST = OPTION_RESET_MODE == "SYNC" ? PORT_R_RD_SRST : PORT_R_RD_ARST;
wire [13:0] ADW = `addrbe_always(PORT_W_WIDTH, PORT_W_ADDR);
wire [13:0] ADW = `addrbe(PORT_W_WIDTH, PORT_W_ADDR, PORT_W_WR_BE);
wire WRE = PORT_W_CLK_EN & PORT_W_WR_EN;
generate

18
techlibs/gowin/brams_map_gw5a.v
View File

@ -14,7 +14,7 @@
`define x8_width(width) (width / 9 * 8 + width % 9)
`define x8_rd_data(data) {1'bx, data[31:24], 1'bx, data[23:16], 1'bx, data[15:8], 1'bx, data[7:0]}
`define x8_wr_data(data) {data[34:27], data[25:18], data[16:9], data[7:0]}
`define addrbe_always(width, addr) (width < 18 ? addr : width == 18 ? {addr[13:4], 4'b0011} : {addr[13:5], 5'b01111})
`define addrbe(width, addr, w_be) (width < 18 ? addr : width == 18 ? {addr[13:4], 2'b00, w_be[1:0]} : {addr[13:5], 1'b0, w_be[3:0]})
`define INIT(func) \
@ -90,6 +90,7 @@ parameter OPTION_RESET_MODE = "SYNC";
parameter PORT_A_WIDTH = 36;
parameter PORT_A_OPTION_WRITE_MODE = 0;
parameter PORT_A_WR_BE_WIDTH = 4;
input PORT_A_CLK;
input PORT_A_CLK_EN;
@ -97,13 +98,14 @@ input PORT_A_WR_EN;
input PORT_A_RD_SRST;
input PORT_A_RD_ARST;
input [13:0] PORT_A_ADDR;
input [PORT_A_WR_BE_WIDTH-1:0] PORT_A_WR_BE;
input [PORT_A_WIDTH-1:0] PORT_A_WR_DATA;
output [PORT_A_WIDTH-1:0] PORT_A_RD_DATA;
`DEF_FUNCS
wire RST = OPTION_RESET_MODE == "SYNC" ? PORT_A_RD_SRST : PORT_A_RD_ARST;
wire [13:0] AD = `addrbe_always(PORT_A_WIDTH, PORT_A_ADDR);
wire [13:0] AD = `addrbe(PORT_A_WIDTH, PORT_A_ADDR, PORT_A_WR_BE);
generate
@ -173,9 +175,11 @@ parameter OPTION_RESET_MODE = "SYNC";
parameter PORT_A_WIDTH = 18;
parameter PORT_A_OPTION_WRITE_MODE = 0;
parameter PORT_A_WR_BE_WIDTH = 4;
parameter PORT_B_WIDTH = 18;
parameter PORT_B_OPTION_WRITE_MODE = 0;
parameter PORT_B_WR_BE_WIDTH = 4;
input PORT_A_CLK;
input PORT_A_CLK_EN;
@ -183,6 +187,7 @@ input PORT_A_WR_EN;
input PORT_A_RD_SRST;
input PORT_A_RD_ARST;
input [13:0] PORT_A_ADDR;
input [PORT_A_WR_BE_WIDTH-1:0] PORT_A_WR_BE;
input [PORT_A_WIDTH-1:0] PORT_A_WR_DATA;
output [PORT_A_WIDTH-1:0] PORT_A_RD_DATA;
@ -192,6 +197,7 @@ input PORT_B_WR_EN;
input PORT_B_RD_SRST;
input PORT_B_RD_ARST;
input [13:0] PORT_B_ADDR;
input [PORT_B_WR_BE_WIDTH-1:0] PORT_B_WR_BE;
input [PORT_A_WIDTH-1:0] PORT_B_WR_DATA;
output [PORT_A_WIDTH-1:0] PORT_B_RD_DATA;
@ -199,8 +205,8 @@ output [PORT_A_WIDTH-1:0] PORT_B_RD_DATA;
wire RSTA = OPTION_RESET_MODE == "SYNC" ? PORT_A_RD_SRST : PORT_A_RD_ARST;
wire RSTB = OPTION_RESET_MODE == "SYNC" ? PORT_B_RD_SRST : PORT_B_RD_ARST;
wire [13:0] ADA = `addrbe_always(PORT_A_WIDTH, PORT_A_ADDR);
wire [13:0] ADB = `addrbe_always(PORT_B_WIDTH, PORT_B_ADDR);
wire [13:0] ADA = `addrbe(PORT_A_WIDTH, PORT_A_ADDR, PORT_B_WR_BE);
wire [13:0] ADB = `addrbe(PORT_B_WIDTH, PORT_B_ADDR, PORT_B_WR_BE);
generate
@ -306,6 +312,7 @@ parameter OPTION_RESET_MODE = "SYNC";
parameter PORT_R_WIDTH = 18;
parameter PORT_W_WIDTH = 18;
parameter PORT_W_WR_BE_WIDTH=4;
input PORT_R_CLK;
input PORT_R_CLK_EN;
@ -318,12 +325,13 @@ input PORT_W_CLK;
input PORT_W_CLK_EN;
input PORT_W_WR_EN;
input [13:0] PORT_W_ADDR;
input [PORT_W_WR_BE_WIDTH-1:0] PORT_W_WR_BE;
input [PORT_W_WIDTH-1:0] PORT_W_WR_DATA;
`DEF_FUNCS
wire RST = OPTION_RESET_MODE == "SYNC" ? PORT_R_RD_SRST : PORT_R_RD_ARST;
wire [13:0] ADW = `addrbe_always(PORT_W_WIDTH, PORT_W_ADDR);
wire [13:0] ADW = `addrbe(PORT_W_WIDTH, PORT_W_ADDR, PORT_W_WR_BE);
wire WRE = PORT_W_CLK_EN & PORT_W_WR_EN;
generate