[Cryptech-Commits] [core/math/modexpng] 67/92: For the new general worker module to work we need dynamic switching of DSP OPMODE, ALUMODE and CARRYINSEL ports, thus more defined constants.

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paul at psgd.org pushed a commit to branch master
in repository core/math/modexpng.

commit 64928838b16fe4c7bb6855d57e5695876314e286
Author: Pavel V. Shatov (Meister) <meisterpaul1 at yandex.ru>
AuthorDate: Mon Jan 20 23:57:42 2020 +0300

    For the new general worker module to work we need dynamic switching of DSP
    OPMODE, ALUMODE and CARRYINSEL ports, thus more defined constants.
---
 rtl/modexpng_dsp48e1.vh | 51 +++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 43 insertions(+), 8 deletions(-)

diff --git a/rtl/modexpng_dsp48e1.vh b/rtl/modexpng_dsp48e1.vh
index 68c5335..8140917 100644
--- a/rtl/modexpng_dsp48e1.vh
+++ b/rtl/modexpng_dsp48e1.vh
@@ -30,12 +30,47 @@
 //
 //======================================================================
 
-localparam DSP48E1_A_W       = 30;
-localparam DSP48E1_B_W       = 18;
-localparam DSP48E1_C_W       = 48;
-localparam DSP48E1_D_W       = 25;
-localparam DSP48E1_P_W       = 48;
-localparam DSP48E1_INMODE_W  = 5;
-localparam DSP48E1_OPMODE_W  = 7;
-localparam DSP48E1_ALUMODE_W = 4;
+localparam DSP48E1_A_W          = 30;
+localparam DSP48E1_B_W          = 18;
+localparam DSP48E1_C_W          = 48;
+localparam DSP48E1_D_W          = 25;
+localparam DSP48E1_P_W          = 48;
+localparam DSP48E1_INMODE_W     = 5;
+localparam DSP48E1_OPMODE_W     = 7;
+localparam DSP48E1_ALUMODE_W    = 4;
+localparam DSP48E1_CARRYINSEL_W = 3;
+localparam DSP48E1_CARRYOUT_W   = 4;
 
+localparam DSP48E1_OPMODE_X_DNC = 2'bXX;
+localparam DSP48E1_OPMODE_X_0   = 2'b00;
+localparam DSP48E1_OPMODE_X_AB  = 2'b11;
+
+localparam DSP48E1_OPMODE_Y_DNC = 2'bXX;
+localparam DSP48E1_OPMODE_Y_0   = 2'b00;
+localparam DSP48E1_OPMODE_Y_C   = 2'b11;
+
+localparam DSP48E1_OPMODE_Z_DNC    = 3'bXXX;
+localparam DSP48E1_OPMODE_Z_0      = 3'b000;
+localparam DSP48E1_OPMODE_Z_P17    = 3'b110;
+localparam DSP48E1_OPMODE_Z_PCIN17 = 3'b101;
+localparam DSP48E1_OPMODE_Z_P      = 3'b010;
+localparam DSP48E1_OPMODE_Z_C      = 3'b011;
+
+localparam DSP48E1_OPMODE_DNC = {DSP48E1_OPMODE_Z_DNC, DSP48E1_OPMODE_Y_DNC, DSP48E1_OPMODE_X_DNC};
+
+localparam DSP48E1_OPMODE_Z0_YC_XAB      = {DSP48E1_OPMODE_Z_0,      DSP48E1_OPMODE_Y_C, DSP48E1_OPMODE_X_AB};
+localparam DSP48E1_OPMODE_ZP17_YC_XAB    = {DSP48E1_OPMODE_Z_P17,    DSP48E1_OPMODE_Y_C, DSP48E1_OPMODE_X_AB};
+localparam DSP48E1_OPMODE_Z0_Y0_XAB      = {DSP48E1_OPMODE_Z_0,      DSP48E1_OPMODE_Y_0, DSP48E1_OPMODE_X_AB};
+localparam DSP48E1_OPMODE_ZPCIN17_YC_XAB = {DSP48E1_OPMODE_Z_PCIN17, DSP48E1_OPMODE_Y_C, DSP48E1_OPMODE_X_AB};
+localparam DSP48E1_OPMODE_Z0_YC_X0       = {DSP48E1_OPMODE_Z_0,      DSP48E1_OPMODE_Y_C, DSP48E1_OPMODE_X_0};
+localparam DSP48E1_OPMODE_ZP17_YC_X0     = {DSP48E1_OPMODE_Z_P17,    DSP48E1_OPMODE_Y_C, DSP48E1_OPMODE_X_0};
+localparam DSP48E1_OPMODE_ZP_YC_X0       = {DSP48E1_OPMODE_Z_P,      DSP48E1_OPMODE_Y_C, DSP48E1_OPMODE_X_0};
+localparam DSP48E1_OPMODE_ZC_Y0_XAB      = {DSP48E1_OPMODE_Z_C,      DSP48E1_OPMODE_Y_0, DSP48E1_OPMODE_X_AB};
+
+localparam DSP48E1_CARRYINSEL_DNC          = 3'bXXX;
+localparam DSP48E1_CARRYINSEL_CARRYIN      = 3'b000;
+localparam DSP48E1_CARRYINSEL_CARRYCASCOUT = 3'b100;
+
+localparam DSP48E1_ALUMODE_DNC                     = 4'bXXXX;
+localparam DSP48E1_ALUMODE_Z_PLUS_X_AND_Y_AND_CIN  = 4'b0000;
+localparam DSP48E1_ALUMODE_Z_MINUS_X_AND_Y_AND_CIN = 4'b0011;