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axi_dmac: Propagate awlen/arlen width through the core 

Depending on whether the core is configured for AXI4 or AXI3 mode the width
of the awlen/arlen signal is either 8 or 4 bit. At the moment this is only
considered in top-level module and all other modules use 8 bit internally.
This causes warnings about truncated signals in AXI3 mode, to resolve this
forward the width of the signal through the core.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
main
Lars-Peter Clausen 2017-03-30 16:33:46 +02:00
parent ebfed4b24b
commit 495d2f3056
5 changed files with 22 additions and 11 deletions
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6
library/axi_dmac/address_generator.v
View File

@ -57,7 +57,7 @@ module dmac_address_generator (
input addr_ready,
output reg addr_valid,
output [31:0] addr,
output [ 7:0] len,
output [LENGTH_WIDTH-1:0] len,
output [ 2:0] size,
output [ 1:0] burst,
output [ 2:0] prot,
@ -69,6 +69,8 @@ parameter ID_WIDTH = 3;
parameter DMA_DATA_WIDTH = 64;
parameter BEATS_PER_BURST_WIDTH = 4;
parameter BYTES_PER_BEAT_WIDTH = $clog2(DMA_DATA_WIDTH/8);
parameter LENGTH_WIDTH = 8;
localparam MAX_BEATS_PER_BURST = 2**(BEATS_PER_BURST_WIDTH);
`include "inc_id.h"
@ -79,7 +81,7 @@ assign cache = 4'b0011;
assign len = length;
assign size = $clog2(DMA_DATA_WIDTH/8);
reg [7:0] length = 'h0;
reg [LENGTH_WIDTH-1:0] length = 'h0;
reg [31-BYTES_PER_BEAT_WIDTH:0] address = 'h00;
reg [BEATS_PER_BURST_WIDTH-1:0] last_burst_len = 'h00;
assign addr = {address, {BYTES_PER_BEAT_WIDTH{1'b0}}};

3
library/axi_dmac/axi_dmac.v
View File

@ -537,7 +537,8 @@ dmac_request_arb #(
.AXI_SLICE_SRC(AXI_SLICE_SRC),
.MAX_BYTES_PER_BURST(MAX_BYTES_PER_BURST),
.FIFO_SIZE(FIFO_SIZE),
.ID_WIDTH(ID_WIDTH)
.ID_WIDTH(ID_WIDTH),
.AXI_LENGTH_WIDTH(8-(4*DMA_AXI_PROTOCOL_SRC))
) i_request_arb (
.req_aclk(s_axi_aclk),
.req_aresetn(s_axi_aresetn),

6
library/axi_dmac/dest_axi_mm.v
View File

@ -74,7 +74,7 @@ module dmac_dest_mm_axi (
input m_axi_awready,
output m_axi_awvalid,
output [31:0] m_axi_awaddr,
output [ 7:0] m_axi_awlen,
output [AXI_LENGTH_WIDTH-1:0] m_axi_awlen,
output [ 2:0] m_axi_awsize,
output [ 1:0] m_axi_awburst,
output [ 2:0] m_axi_awprot,
@ -97,6 +97,7 @@ parameter ID_WIDTH = 3;
parameter DMA_DATA_WIDTH = 64;
parameter BYTES_PER_BEAT_WIDTH = $clog2(DMA_DATA_WIDTH/8);
parameter BEATS_PER_BURST_WIDTH = 4;
parameter AXI_LENGTH_WIDTH = 8;
reg [(DMA_DATA_WIDTH/8)-1:0] wstrb;
@ -133,7 +134,8 @@ dmac_address_generator #(
.ID_WIDTH(ID_WIDTH),
.BEATS_PER_BURST_WIDTH(BEATS_PER_BURST_WIDTH),
.BYTES_PER_BEAT_WIDTH(BYTES_PER_BEAT_WIDTH),
.DMA_DATA_WIDTH(DMA_DATA_WIDTH)
.DMA_DATA_WIDTH(DMA_DATA_WIDTH),
.LENGTH_WIDTH(AXI_LENGTH_WIDTH)
) i_addr_gen (
.clk(m_axi_aclk),
.resetn(m_axi_aresetn),

12
library/axi_dmac/request_arb.v
View File

@ -61,7 +61,7 @@ module dmac_request_arb (
// Write address
output [31:0] m_axi_awaddr,
output [ 7:0] m_axi_awlen,
output [AXI_LENGTH_WIDTH-1:0] m_axi_awlen,
output [ 2:0] m_axi_awsize,
output [ 1:0] m_axi_awburst,
output [ 2:0] m_axi_awprot,
@ -85,7 +85,7 @@ module dmac_request_arb (
input m_axi_arready,
output m_axi_arvalid,
output [31:0] m_axi_araddr,
output [ 7:0] m_axi_arlen,
output [AXI_LENGTH_WIDTH-1:0] m_axi_arlen,
output [ 2:0] m_axi_arsize,
output [ 1:0] m_axi_arburst,
output [ 2:0] m_axi_arprot,
@ -162,6 +162,8 @@ parameter FIFO_SIZE = 4;
parameter ID_WIDTH = $clog2(FIFO_SIZE*2);
parameter AXI_LENGTH_WIDTH = 8;
localparam DMA_TYPE_MM_AXI = 0;
localparam DMA_TYPE_STREAM_AXI = 1;
localparam DMA_TYPE_FIFO = 2;
@ -403,7 +405,8 @@ dmac_dest_mm_axi #(
.ID_WIDTH(ID_WIDTH),
.DMA_DATA_WIDTH(DMA_DATA_WIDTH_DEST),
.BEATS_PER_BURST_WIDTH(BEATS_PER_BURST_WIDTH_DEST),
.BYTES_PER_BEAT_WIDTH(BYTES_PER_BEAT_WIDTH_DEST)
.BYTES_PER_BEAT_WIDTH(BYTES_PER_BEAT_WIDTH_DEST),
.AXI_LENGTH_WIDTH(AXI_LENGTH_WIDTH)
) i_dest_dma_mm (
.m_axi_aclk(m_dest_axi_aclk),
.m_axi_aresetn(dest_resetn),
@ -616,7 +619,8 @@ dmac_src_mm_axi #(
.ID_WIDTH(ID_WIDTH),
.DMA_DATA_WIDTH(DMA_DATA_WIDTH_SRC),
.BEATS_PER_BURST_WIDTH(BEATS_PER_BURST_WIDTH_SRC),
.BYTES_PER_BEAT_WIDTH(BYTES_PER_BEAT_WIDTH_SRC)
.BYTES_PER_BEAT_WIDTH(BYTES_PER_BEAT_WIDTH_SRC),
.AXI_LENGTH_WIDTH(AXI_LENGTH_WIDTH)
) i_src_dma_mm (
.m_axi_aclk(m_src_axi_aclk),
.m_axi_aresetn(src_resetn),

6
library/axi_dmac/src_axi_mm.v
View File

@ -71,7 +71,7 @@ module dmac_src_mm_axi (
input m_axi_arready,
output m_axi_arvalid,
output [31:0] m_axi_araddr,
output [ 7:0] m_axi_arlen,
output [AXI_LENGTH_WIDTH-1:0] m_axi_arlen,
output [ 2:0] m_axi_arsize,
output [ 1:0] m_axi_arburst,
output [ 2:0] m_axi_arprot,
@ -88,6 +88,7 @@ parameter ID_WIDTH = 3;
parameter DMA_DATA_WIDTH = 64;
parameter BYTES_PER_BEAT_WIDTH = 3;
parameter BEATS_PER_BURST_WIDTH = 4;
parameter AXI_LENGTH_WIDTH = 8;
`include "resp.h"
@ -125,7 +126,8 @@ dmac_address_generator #(
.ID_WIDTH(ID_WIDTH),
.BEATS_PER_BURST_WIDTH(BEATS_PER_BURST_WIDTH),
.BYTES_PER_BEAT_WIDTH(BYTES_PER_BEAT_WIDTH),
.DMA_DATA_WIDTH(DMA_DATA_WIDTH)
.DMA_DATA_WIDTH(DMA_DATA_WIDTH),
.LENGTH_WIDTH(AXI_LENGTH_WIDTH)
) i_addr_gen (
.clk(m_axi_aclk),
.resetn(m_axi_aresetn),