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adding OPAE CSR support

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This commit is contained in:
Blaise Tine
2020-06-30 10:05:57 -07:00
parent 1f5c4bf617
commit 582a00d690
10 changed files with 334 additions and 94 deletions
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51
hw/opae/vortex_afu.sv
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@@ -122,6 +122,17 @@ logic [`VX_SNP_TAG_WIDTH-1:0] vx_snp_rsp_tag;
`DEBUG_END
logic vx_snp_rsp_ready;
logic vx_csr_io_req_valid;
logic [`NC_BITS-1:0] vx_csr_io_req_coreid;
logic [11:0] vx_csr_io_req_addr;
logic vx_csr_io_req_rw;
logic [31:0] vx_csr_io_req_data;
logic vx_csr_io_req_ready;
logic vx_csr_io_rsp_valid;
logic [31:0] vx_csr_io_rsp_data;
logic vx_csr_io_rsp_ready;
logic vx_reset;
logic vx_busy;
@@ -156,7 +167,7 @@ logic cmd_scope_read;
logic cmd_scope_write;
`endif
logic [31:0] cmd_csr_addr;
logic [11:0] cmd_csr_addr;
logic [31:0] cmd_csr_rdata;
logic [31:0] cmd_csr_wdata;
@@ -278,7 +289,7 @@ begin
end
`endif
MMIO_CSR_READ: begin
mmio_tx.data <= cmd_csr_rdata;
mmio_tx.data <= 64'(cmd_csr_rdata);
`ifdef DBG_PRINT_OPAE
$display("%t: MMIO_CSR_READ: data=%0h", $time, cmd_csr_rdata);
`endif
@@ -854,20 +865,17 @@ end
// CSRs///////////////////////////////////////////////////////////////////////
assign cmd_csr_read_done = 1;
assign cmd_csr_write_done = 1;
assign vx_csr_io_req_valid = (STATE_CSR_READ == state || STATE_CSR_WRITE == state);
assign vx_csr_io_req_coreid = 0;
assign vx_csr_io_req_rw = (STATE_CSR_WRITE == state);
assign vx_csr_io_req_addr = cmd_csr_addr;
assign vx_csr_io_req_data = cmd_csr_wdata;
always_comb begin
case (cmd_csr_addr)
`CSR_VEND_ID : cmd_csr_rdata = `VENDOR_ID;
`CSR_ARCH_ID : cmd_csr_rdata = `ARCHITECTURE_ID;
`CSR_IMPL_ID : cmd_csr_rdata = `IMPLEMENTATION_ID;
`CSR_NT : cmd_csr_rdata = `NUM_THREADS;
`CSR_NW : cmd_csr_rdata = `NUM_WARPS;
`CSR_NC : cmd_csr_rdata = `NUM_CORES * `NUM_CLUSTERS;
default : cmd_csr_rdata = 0;
endcase
end
assign cmd_csr_rdata = vx_csr_io_rsp_data;
assign vx_csr_io_rsp_ready = 1;
assign cmd_csr_read_done = vx_csr_io_rsp_valid;
assign cmd_csr_write_done = vx_csr_io_req_ready;
// Vortex /////////////////////////////////////////////////////////////////////
@@ -925,6 +933,19 @@ Vortex #() vortex (
.io_rsp_data (0),
.io_rsp_tag (0),
`UNUSED_PIN (io_rsp_ready),
// CSR I/O Request
.csr_io_req_valid (vx_csr_io_req_valid),
.csr_io_req_coreid(vx_csr_io_req_coreid),
.csr_io_req_addr (vx_csr_io_req_addr),
.csr_io_req_rw (vx_csr_io_req_rw),
.csr_io_req_data (vx_csr_io_req_data),
.csr_io_req_ready (vx_csr_io_req_ready),
// CSR I/O Response
.csr_io_rsp_valid (vx_csr_io_rsp_valid),
.csr_io_rsp_data (vx_csr_io_rsp_data),
.csr_io_rsp_ready (vx_csr_io_rsp_ready),
// status
.busy (vx_busy),