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Commit e151f409 authored by Andrey Filippov's avatar Andrey Filippov
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verified/fixed multi-prd, non-aligned (start and length) receive buffer

parent 45736d4f
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Showing with 270 additions and 96 deletions
ahci/ahci_dma.v
View file @ e151f409
......@@ -200,6 +200,7 @@ module ahci_dma (
wire done_dev_wr; // finished PRD mem -> device
wire done_dev_rd; // finished PRD device -> mem
wire prd_done_hclk = done_dev_wr || done_dev_rd;
wire done_flush; // done flushing last partial dword
wire cmd_done_hclk;
wire ct_done_mclk;
......@@ -209,7 +210,7 @@ module ahci_dma (
reg data_next_burst;
// wire raddr_prd_rq = (|prds_left) && (ct_done || prd_done);
wire raddr_prd_rq = (|prds_left) && (first_prd_fetch || prd_done);
wire raddr_prd_rq = (|prds_left) && (first_prd_fetch || prd_done_hclk);
reg raddr_prd_pend;
......@@ -244,7 +245,7 @@ module ahci_dma (
// assign prd_done = done_dev_wr || done_dev_rd;
assign cmd_done_hclk = ((ct_busy_r==2'b10) && (prdtl_mclk == 0)) || done_flush || done_dev_rd;
assign cmd_done_hclk = ((ct_busy_r==2'b10) && (prdtl_mclk == 0)) || ((done_flush || done_dev_rd) && last_prd);
assign ct_done = (ct_busy_r == 2'b10);
assign first_prd_fetch = ct_over_prd_enabled == 2'b01;
assign axi_set_raddr_w = axi_set_raddr_ready && (raddr_ct_pend || raddr_prd_pend || raddr_data_pend);
......@@ -291,7 +292,9 @@ module ahci_dma (
if (ct_re[1]) ct_data <= ct_data_reg;
if (ctba_ld) ctba_r <= ctba[31:7];
if (cmd_start) prdtl_mclk <= prdtl;
if (cmd_start) dev_wr_mclk <= dev_wr;
if (mrst) cmd_busy <= 0;
......@@ -443,14 +446,17 @@ module ahci_dma (
// calculate afi_wlast - it is (qw_datawr_burst == 0), just use register qw_datawr_last
if (prd_wr) qw_datawr_last <= qwcount[21:3] == 0;
else if (afi_wvalid) qw_datawr_last <= qw_datawr_burst == 1;
/// else if (afi_wvalid) qw_datawr_last <= qw_datawr_burst == 1;
else if (afi_wvalid) qw_datawr_last <= (qw_datawr_burst == 1) || (qw_datawr_last && !(|qw_datawr_left[21:3])); // last case - n*16 + 1 (last burst single)
if (prd_wr) qw_datawr_burst <= (|qwcount[21:7])? 4'hf: qwcount[6:3];
else if (afi_wvalid && qw_datawr_last && (qw_datawr_left[21:7] == 0)) qw_datawr_burst <= qw_datawr_left[6:3]; // if not last roll over to 'hf
/// else if (afi_wvalid && qw_datawr_last && (qw_datawr_left[21:7] == 0)) qw_datawr_burst <= qw_datawr_left[6:3]; // if not last roll over to 'hf
/// else if (afi_wvalid && (qw_datawr_left[21:7] == 0)) qw_datawr_burst <= qw_datawr_left[6:3]; // if not last roll over to 'hf
else if (afi_wvalid && qw_datawr_last && (qw_datawr_left[21:7] == 1)) qw_datawr_burst <= qw_datawr_left[6:3]; // if not last roll over to 'hf
else if (afi_wvalid) qw_datawr_burst <= qw_datawr_burst - 1;
if (prd_wr) qw_datawr_left[21:3] <= qwcount[21:3];
else if (afi_wvalid && qw_datawr_last) qw_datawr_left[21:7] <= qw_datawr_left[21:7] - 1;
else if (afi_wvalid && qw_datawr_last) qw_datawr_left[21:7] <= qw_datawr_left[21:7] - 1; // can go negative - OK?
// Count AXI IDs
if (hrst) ct_id <= 0;
......@@ -581,7 +587,7 @@ module ahci_dma (
.rst (hrst), // input
.src_clk (hclk), // input
.dst_clk (mclk), // input
.in_pulse (done_dev_wr || done_dev_rd), // input
.in_pulse (prd_done_hclk), // input
.out_pulse (prd_done), // output
.busy() // output
);
......
tb/tb_ahci.tf
View file @ e151f409
......@@ -692,7 +692,7 @@ localparam ATA_IDFY = 'hec; // Identify command
wire [31:0] sysmem_di_high = ({{8{~afi_sim_wr_stb[7]}},{8{~afi_sim_wr_stb[6]}},{8{~afi_sim_wr_stb[5]}},{8{~afi_sim_wr_stb[4]}}} &
(sysmem[sysmem_dworda_wr[31:2]+1] ^ afi_sim_wr_data[63:32])) ^ afi_sim_wr_data[63:32];
always @ (posedge HCLK) begin
always @ (posedge HCLK) if (afi_sim_wr_ready && afi_sim_wr_valid) begin
if (|afi_sim_wr_stb[3:0]) sysmem[sysmem_dworda_wr[31:2] ] <= sysmem_di_low;
if (|afi_sim_wr_stb[7:4]) sysmem[sysmem_dworda_wr[31:2] + 1] <= sysmem_di_high;
end
......@@ -716,7 +716,7 @@ localparam ATA_IDFY = 'hec; // Identify command
endtask
task setup_pio_read_identify_command;
task setup_pio_read_identify_command_simple;
input integer prd_int; // [0] - first prd interrupt, ... [31] - 31-st
integer i;
begin
......@@ -729,7 +729,7 @@ localparam ATA_IDFY = 'hec; // Identify command
( 0 << 24); // features = 0 ?
// All other 4 DWORDs are 0 for this command
// Set PRDT (single item) TODO: later check multiple small ones
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 0] = SYS_MEM_START + IDENTIFY_BUF + 2; // shift by 2 bytes
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 0] = SYS_MEM_START + IDENTIFY_BUF;
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 3] = (prd_int[0] << 31) | 511; // 512 bytes in this PRDT
// Setup command header
maxigp1_writep ((CLB_OFFS32 + 0) << 2, (5 << 0) | // 'CFL' - number of DWORDs in thes CFIS
......@@ -747,6 +747,89 @@ localparam ATA_IDFY = 'hec; // Identify command
// relax and enjoy
end
endtask
task setup_pio_read_identify_command_shifted;
input integer prd_int; // [0] - first prd interrupt, ... [31] - 31-st
integer i;
begin
// clear system memory for command
for (i = 0; i < 64; i = i+1) sysmem[(COMMAND_TABLE >> 2) + i] = 0;
// fill ATA command
sysmem[(COMMAND_TABLE >> 2) + 0] = FIS_H2DR | // FIS type - H2D register (0x27)
('h80 << 8) | // set C = 1
(ATA_IDFY << 16) | // Command = 0xEC (IDFY)
( 0 << 24); // features = 0 ?
// All other 4 DWORDs are 0 for this command
// Set PRDT (single item) TODO: later check multiple small ones
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 0] = SYS_MEM_START + IDENTIFY_BUF + 2; // shift by 2 bytes
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 3] = (prd_int[0] << 32) | 511; // 512 bytes in this PRDT
// Setup command header
maxigp1_writep ((CLB_OFFS32 + 0) << 2, (5 << 0) | // 'CFL' - number of DWORDs in thes CFIS
(0 << 5) | // 'A' Not ATAPI
(0 << 6) | // 'W' Not write to device
(1 << 7) | // 'P' Prefetchable = 1
(0 << 8) | // 'R' Not a Reset
(0 << 9) | // 'B' Not a BIST
// (0 << 10) | // 'C' Do not clear BSY/CI after transmitting this command
(1 << 10) | // 'C' Do clear BSY/CI after transmitting this command
(1 << 16)); // 'PRDTL' - number of PRDT entries (just one)
maxigp1_writep ((CLB_OFFS32 +2 ) << 2, (SYS_MEM_START + COMMAND_TABLE) & 32'hffffffc0); // 'CTBA' - Command table base address
// Set Command Issued
maxigp1_writep (HBA_PORT__PxCI__CI__ADDR << 2, 1); // 'PxCI' - Set 'Command issue' for slot 0 (the only one)
// relax and enjoy
end
endtask
task setup_pio_read_identify_command_multi4;
input integer prd_int; // [0] - first prd interrupt, ... [31] - 31-st
input integer nw1; // first segment lengtth (in words)
input integer nw2; // second segment lengtth (in words)
input integer nw3; // third segment lengtth (in words)
integer nw4;
integer i;
begin
nw4 = 256 - nw1 - nw2 - nw3; // total 512 bytes, 256 words
// clear system memory for command
for (i = 0; i < 64; i = i+1) sysmem[(COMMAND_TABLE >> 2) + i] = 0;
// fill ATA command
sysmem[(COMMAND_TABLE >> 2) + 0] = FIS_H2DR | // FIS type - H2D register (0x27)
('h80 << 8) | // set C = 1
(ATA_IDFY << 16) | // Command = 0xEC (IDFY)
( 0 << 24); // features = 0 ?
// All other 4 DWORDs are 0 for this command
// Set PRDT (four items)
// PRDT #1
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 0] = SYS_MEM_START + IDENTIFY_BUF; // not shifted
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 3] = (prd_int[0] << 31) | (2 * nw1 - 1); // 2 * nw1 bytes
// PRDT #2
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 4] = SYS_MEM_START + IDENTIFY_BUF + (2 * nw1);
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 7] = (prd_int[0] << 31) | (2 * nw2 - 1); // 2 * nw2 bytes
// PRDT #3
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 8] = SYS_MEM_START + IDENTIFY_BUF + (2 * nw1) + (2 * nw2);
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 11] = (prd_int[0] << 31) | (2 * nw3 - 1); // 2 * nw3 bytes
// PRDT #4
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 12] = SYS_MEM_START + IDENTIFY_BUF + (2 * nw1) + (2 * nw2) + (2 * nw3);
sysmem[((COMMAND_TABLE + PRD_OFFSET) >> 2) + 15] = (prd_int[0] << 31) | (2 * nw4 - 1); // 2 * nw4 bytes
// Setup command header
maxigp1_writep ((CLB_OFFS32 + 0) << 2, (5 << 0) | // 'CFL' - number of DWORDs in thes CFIS
(0 << 5) | // 'A' Not ATAPI
(0 << 6) | // 'W' Not write to device
(1 << 7) | // 'P' Prefetchable = 1
(0 << 8) | // 'R' Not a Reset
(0 << 9) | // 'B' Not a BIST
// (0 << 10) | // 'C' Do not clear BSY/CI after transmitting this command
(1 << 10) | // 'C' Do clear BSY/CI after transmitting this command
(4 << 16)); // 'PRDTL' - number of PRDT entries (4)
maxigp1_writep ((CLB_OFFS32 +2 ) << 2, (SYS_MEM_START + COMMAND_TABLE) & 32'hffffffc0); // 'CTBA' - Command table base address
// Set Command Issued
maxigp1_writep (HBA_PORT__PxCI__CI__ADDR << 2, 1); // 'PxCI' - Set 'Command issue' for slot 0 (the only one)
// relax and enjoy
end
endtask
initial begin //Host
wait (!RST);
//reg [639:0] TESTBENCH_TITLE = "RESET"; // to show human-readable state in the GTKWave
......@@ -812,7 +895,9 @@ initial begin //Host
maxigp1_print (HBA_PORT__PxSSTS__DET__ADDR << 2,"HBA_PORT__PxSSTS__DET__ADDR");
setup_pio_read_identify_command(1); // prdt interrupt for entry 0
setup_pio_read_identify_command_simple(1); // prdt interrupt for entry 0
// setup_pio_read_identify_command_shifted(1); // prdt interrupt for entry 0
// setup_pio_read_identify_command_multi4(1,27,71,83); // prdt interrupt for entry 0
maxigp1_print (HBA_PORT__PxCI__CI__ADDR << 2,"HBA_PORT__PxCI__CI__ADDR");
maxigp1_writep (HBA_PORT__PxIE__PSE__ADDR << 2, HBA_PORT__PxIE__PSE__MASK); // allow PS only interrupts (PIO setup)
......@@ -823,7 +908,8 @@ initial begin //Host
maxigp1_print (HBA_PORT__PxIS__PSS__ADDR << 2,"HBA_PORT__PxIS__PSS__ADDR");
sysmem_print ('h1e81,'h180);
// sysmem_print ('h1e81,'h180); // for shifted
sysmem_print ('h1e80,'h180);
$finish;
//HBA_PORT__PxIE__DHRE__MASK = 'h1;
......
tb_ahci_01.sav
View file @ e151f409
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