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Commit 8957af0c authored by Andrey Filippov's avatar Andrey Filippov
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bug fizes

parent 7c945dec
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Showing with 30 additions and 20 deletions
memctrl/cmd_encod_linear_rd.v
View file @ 8957af0c
......@@ -2,7 +2,7 @@
* Module: cmd_encod_linear_rd
* Date:2015-01-23
* Author: andrey
* Description: Command sequencer generator for writing a sequential up to 1KB page
* Description: Command sequencer generator for reading a sequential up to 1KB page
* single page access, bank and row will not be changed
*
* Copyright (c) 2015 <set up in Preferences-Verilog/VHDL Editor-Templates> .
......@@ -20,11 +20,20 @@
* along with this program. If not, see <http://www.gnu.org/licenses/> .
*******************************************************************************/
`timescale 1ns/1ps
/*
Minimal ACTIVATE period =4 Tcm or 10ns, so maksimal no-miss rate is Tck=1.25 ns (800 MHz)
Minimal window of 4 ACTIVATE pulses - 16 Tck or 40 (40 ns), so one ACTIVATE per 8 Tck is still OK down to 1.25 ns
Reads are in 16-byte colums: 1 8-burst (16 bytes) in a row, then next row, bank inc first. Then (if needed) - next column
Number of rows should be >=5 (4 now for tCK=2.5ns to meet tRP (precharge to activate) of the same bank (tRP=13ns)
Can read less if just one column
TODO: Maybe allow less rows with different sequence (no autoprecharge/no activate?) Will not work if row crosses page boundary
*/
module cmd_encod_linear_rd #(
// parameter BASEADDR = 0,
parameter ADDRESS_NUMBER=15,
parameter COLADDR_NUMBER=10,
parameter ADDRESS_NUMBER= 15,
parameter COLADDR_NUMBER= 10,
parameter CMD_PAUSE_BITS= 10,
parameter CMD_DONE_BIT= 10 // VDT BUG: CMD_DONE_BIT is used in a function call parameter!
) (
......@@ -35,7 +44,7 @@ module cmd_encod_linear_rd #(
// input cmd_stb, // strobe (with first byte) for the command a/d
input [2:0] bank_in, // bank address
input [ADDRESS_NUMBER-1:0] row_in, // memory row
input [COLADDR_NUMBER-1:0] start_col, // start memory column (3 LSBs should be 0?)
input [COLADDR_NUMBER-4:0] start_col, // start memory column in 8-bursts
input [5:0] num128_in, // number of 128-bit words to transfer (8*16 bits) - full burst of 8
input start, // start generating commands
output reg [31:0] enc_cmd, // encoded commnad
......@@ -65,7 +74,7 @@ module cmd_encod_linear_rd #(
localparam CMD_ACTIVATE= 4;
reg [ADDRESS_NUMBER-1:0] row; // memory row
reg [COLADDR_NUMBER-1:0] col; // start memory column (3 LSBs should be 0?) // VDT BUG: col is used as a function call parameter!
reg [COLADDR_NUMBER-4:0] col; // start memory column (3 LSBs should be 0?) // VDT BUG: col is used as a function call parameter!
reg [2:0] bank; // memory bank;
reg [5:0] num128; // number of 128-bit words to transfer
......@@ -97,10 +106,10 @@ module cmd_encod_linear_rd #(
else if (!start && !gen_run) gen_addr <= 0;
else if ((gen_addr==(REPEAT_ADDR-1)) && (num128[5:1]==0)) gen_addr <= REPEAT_ADDR+1; // skip loop alltogeter
else if ((gen_addr !=REPEAT_ADDR) || (num128[5:1]==0)) gen_addr <= gen_addr+1; // not in a loop
//counting loops?
if (rst) num128 <= 0;
else if (start) num128 <= num128_in;
else if (!gen_run) gen_addr <= 0; //
else if (!gen_run) num128 <= 0; //
else if ((gen_addr == (REPEAT_ADDR-1)) || (gen_addr == REPEAT_ADDR)) num128 <= num128 -1;
end
......@@ -153,7 +162,7 @@ module cmd_encod_linear_rd #(
else enc_cmd <= func_encode_cmd ( // encode non-NOP command
rom_cmd[1]?
row:
{{ADDRESS_NUMBER-COLADDR_NUMBER{1'b0}},col[COLADDR_NUMBER-1:0]}, // [14:0] addr; // 15-bit row/column adderss
{{ADDRESS_NUMBER-COLADDR_NUMBER{1'b0}},col[COLADDR_NUMBER-4:0],3'b0}, // [14:0] addr; // 15-bit row/column adderss
bank[2:0], // bank (here OK to be any)
full_cmd[2:0], // rcw; // RAS/CAS/WE, positive logic
1'b0, // odt_en; // enable ODT
......
memctrl/cmd_encod_linear_wr.v
View file @ 8957af0c
......@@ -23,8 +23,8 @@
module cmd_encod_linear_wr #(
// parameter BASEADDR = 0,
parameter ADDRESS_NUMBER=15,
parameter COLADDR_NUMBER=10,
parameter ADDRESS_NUMBER= 15,
parameter COLADDR_NUMBER= 10,
parameter CMD_PAUSE_BITS= 10,
parameter CMD_DONE_BIT= 10 // VDT BUG: CMD_DONE_BIT is used in a function call parameter!
) (
......@@ -35,7 +35,7 @@ module cmd_encod_linear_wr #(
// input cmd_stb, // strobe (with first byte) for the command a/d
input [2:0] bank_in, // bank address
input [ADDRESS_NUMBER-1:0] row_in, // memory row
input [COLADDR_NUMBER-1:0] start_col, // start memory column (3 LSBs should be 0?)
input [COLADDR_NUMBER-4:0] start_col, // start memory column (3 LSBs should be 0?)
input [5:0] num128_in, // number of 128-bit words to transfer (8*16 bits) - full burst of 8
input start, // start generating commands
output reg [31:0] enc_cmd, // encoded commnad
......@@ -67,7 +67,7 @@ module cmd_encod_linear_wr #(
localparam CMD_ACTIVATE= 4;
reg [ADDRESS_NUMBER-1:0] row; // memory row
reg [COLADDR_NUMBER-1:0] col; // start memory column (3 LSBs should be 0?) // VDT BUG: col is used as a function call parameter!
reg [COLADDR_NUMBER-4:0] col; // start memory column (3 LSBs should be 0?) // VDT BUG: col is used as a function call parameter!
reg [2:0] bank; // memory bank;
reg [5:0] num128; // number of 128-bit words to transfer
......@@ -100,9 +100,10 @@ module cmd_encod_linear_wr #(
else if ((gen_addr==(REPEAT_ADDR-1)) && (num128[5:1]==0)) gen_addr <= REPEAT_ADDR+1; // skip loop alltogeter
else if ((gen_addr !=REPEAT_ADDR) || (num128[5:1]==0)) gen_addr <= gen_addr+1; // not in a loop
//counting loops
if (rst) num128 <= 0;
else if (start) num128 <= num128_in;
else if (!gen_run) gen_addr <= 0; //
else if (!gen_run) num128 <= 0; //
else if ((gen_addr == (REPEAT_ADDR-1)) || (gen_addr == REPEAT_ADDR)) num128 <= num128 -1;
end
......@@ -156,7 +157,7 @@ module cmd_encod_linear_wr #(
else enc_cmd <= func_encode_cmd ( // encode non-NOP command
rom_cmd[1]?
row:
{{ADDRESS_NUMBER-COLADDR_NUMBER{1'b0}},col[COLADDR_NUMBER-1:0]}, // [14:0] addr; // 15-bit row/column adderss
{{ADDRESS_NUMBER-COLADDR_NUMBER{1'b0}},col[COLADDR_NUMBER-4:0],3'b0}, // [14:0] addr; // 15-bit row/column adderss
bank[2:0], // bank (here OK to be any)
full_cmd[2:0], // rcw; // RAS/CAS/WE, positive logic
rom_r[ENC_ODT], // odt_en; // enable ODT
......
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