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Fix incorrect CSR forwarding for GID between different warps

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This commit is contained in:
felsabbagh3
2020-05-16 17:56:15 -07:00
parent e2741f9cdb
commit 4bf0bcca8a
1 changed files with 4 additions and 1 deletions
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5
hw/rtl/VX_csr_pipe.v
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@@ -38,7 +38,10 @@ module VX_csr_pipe #(
.wb_valid (| writeback_if.valid) .wb_valid (| writeback_if.valid)
); );
assign csr_read_data = (csr_address_s2 == csr_req_if.csr_address) ? csr_updated_data_s2 : csr_read_data_unqual; // wire hazard = (csr_address_s2 == csr_req_if.csr_address) & (warp_num_s2 == csr_req_if.warp_num) & |(valid_s2) & is_csr_s2;
wire car_hazard = (csr_address_s2 == csr_req_if.csr_address) & (warp_num_s2 == csr_req_if.warp_num) & |(valid_s2) & is_csr_s2;
assign csr_read_data = car_hazard ? csr_updated_data_s2 : csr_read_data_unqual;
reg [31:0] csr_updated_data; reg [31:0] csr_updated_data;