diff options
Diffstat (limited to 'src/hls/FunctionalUnits.v')
-rw-r--r-- | src/hls/FunctionalUnits.v | 101 |
1 files changed, 96 insertions, 5 deletions
diff --git a/src/hls/FunctionalUnits.v b/src/hls/FunctionalUnits.v index e94b8e8..dcbe22f 100644 --- a/src/hls/FunctionalUnits.v +++ b/src/hls/FunctionalUnits.v @@ -52,13 +52,11 @@ Record ram := mk_ram { ram_wr_en: reg; ram_d_in: reg; ram_d_out: reg; - ram_ordering: (ram_addr < ram_en - /\ ram_en < ram_d_in - /\ ram_d_in < ram_d_out - /\ ram_d_out < ram_wr_en - /\ ram_wr_en < ram_u_en) }. +Definition all_ram_regs r := + ram_mem r::ram_en r::ram_u_en r::ram_addr r::ram_wr_en r::ram_d_in r::ram_d_out r::nil. + Inductive funct_unit: Type := | SignedDiv: divider true -> funct_unit | UnsignedDiv: divider false -> funct_unit @@ -77,6 +75,80 @@ Record resources := mk_resources { res_arch: arch; }. +Definition index_div {b:bool} r (d: divider b) := + match r with + | 1 => div_numer d + | 2 => div_denom d + | 3 => div_quot d + | _ => div_rem d + end. + +Definition index_ram r (d: ram) := + match r with + | 1 => ram_mem d + | 2 => ram_en d + | 3 => ram_u_en d + | 4 => ram_addr d + | 5 => ram_wr_en d + | 6 => ram_d_in d + | _ => ram_d_out d + end. + +Definition index_res u r res := + match PTree.get u res with + | Some (SignedDiv d) => Some (index_div r d) + | Some (UnsignedDiv d) => Some (index_div r d) + | Some (Ram d) => Some (index_ram r d) + | None => None + end. + +Definition get_ram n res: option (positive * ram) := + match nth_error (arch_ram (res_arch res)) n with + | Some ri => + match PTree.get ri (res_funct_units res) with + | Some (Ram r) => Some (ri, r) + | _ => None + end + | None => None + end. + +Definition get_div n res := + match nth_error (arch_div (res_arch res)) n with + | Some ri => + match PTree.get ri (res_funct_units res) with + | Some (UnsignedDiv d) => Some (ri, d) + | _ => None + end + | None => None + end. + +Definition get_sdiv n res := + match nth_error (arch_sdiv (res_arch res)) n with + | Some ri => + match PTree.get ri (res_funct_units res) with + | Some (SignedDiv d) => Some (ri, d) + | _ => None + end + | None => None + end. + +Definition set_res fu res := + let max := ((fold_left Pos.max ((arch_sdiv (res_arch res)) + ++ (arch_div (res_arch res)) + ++ (arch_ram (res_arch res))) 1) + 1)%positive in + let nt := PTree.set max fu (res_funct_units res) in + match fu with + | UnsignedDiv _ => mk_resources nt (mk_arch (max :: arch_div (res_arch res)) + (arch_sdiv (res_arch res)) + (arch_ram (res_arch res))) + | SignedDiv _ => mk_resources nt (mk_arch (arch_div (res_arch res)) + (max :: arch_sdiv (res_arch res)) + (arch_ram (res_arch res))) + | Ram _ => mk_resources nt (mk_arch (arch_div (res_arch res)) + (arch_sdiv (res_arch res)) + (max :: arch_ram (res_arch res))) + end. + Definition initial_funct_units: funct_units := PTree.empty _. Definition initial_arch := mk_arch nil nil nil. @@ -90,3 +162,22 @@ Definition funct_unit_stages (f: funct_unit) : positive := | UnsignedDiv d => div_stages d | _ => 1 end. + +Definition max_reg_ram r := + fold_right Pos.max 1 (ram_mem r::ram_en r::ram_u_en r::ram_addr r + ::ram_wr_en r::ram_d_in r::ram_d_out r::nil). + +Definition max_reg_divider {b: bool} (d: divider b) := + fold_right Pos.max 1 (div_numer d::div_denom d::div_quot d::div_rem d::nil). + +Definition max_reg_fu fu := + match fu with + | SignedDiv d | UnsignedDiv d => max_reg_divider d + | Ram r => max_reg_ram r + end. + +Definition max_reg_funct_units r := + PTree.fold (fun m _ a => Pos.max m (max_reg_fu a)) r 1. + +Definition max_reg_resources r := + max_reg_funct_units r.(res_funct_units). |