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git01.mediatek.com / filogic / uboot / b0a854436dbe99f3becd2296f9d901e520ed55f8 / . / drivers / ddr / marvell / axp / ddr3_dqs.c
blob: 0db94212b90f5b343c62bb20bc8c06b8df9ffcf0 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) Marvell International Ltd. and its affiliates
*/
#include <common.h>
#include <i2c.h>
#include <log.h>
#include <spl.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/soc.h>
#include "ddr3_hw_training.h"
/*
* Debug
*/
#define DEBUG_DQS_C(s, d, l) \
DEBUG_DQS_S(s); DEBUG_DQS_D(d, l); DEBUG_DQS_S("\n")
#define DEBUG_DQS_FULL_C(s, d, l) \
DEBUG_DQS_FULL_S(s); DEBUG_DQS_FULL_D(d, l); DEBUG_DQS_FULL_S("\n")
#define DEBUG_DQS_RESULTS_C(s, d, l) \
DEBUG_DQS_RESULTS_S(s); DEBUG_DQS_RESULTS_D(d, l); DEBUG_DQS_RESULTS_S("\n")
#define DEBUG_PER_DQ_C(s, d, l) \
puts(s); printf("%x", d); puts("\n")
#define DEBUG_DQS_RESULTS_S(s) \
debug_cond(ddr3_get_log_level() >= MV_LOG_LEVEL_2, "%s", s)
#define DEBUG_DQS_RESULTS_D(d, l) \
debug_cond(ddr3_get_log_level() >= MV_LOG_LEVEL_2, "%x", d)
#define DEBUG_PER_DQ_S(s) \
debug_cond(ddr3_get_log_level() >= MV_LOG_LEVEL_3, "%s", s)
#define DEBUG_PER_DQ_D(d, l) \
debug_cond(ddr3_get_log_level() >= MV_LOG_LEVEL_3, "%x", d)
#define DEBUG_PER_DQ_DD(d, l) \
debug_cond(ddr3_get_log_level() >= MV_LOG_LEVEL_3, "%d", d)
#ifdef MV_DEBUG_DQS
#define DEBUG_DQS_S(s) puts(s)
#define DEBUG_DQS_D(d, l) printf("%x", d)
#else
#define DEBUG_DQS_S(s)
#define DEBUG_DQS_D(d, l)
#endif
#ifdef MV_DEBUG_DQS_FULL
#define DEBUG_DQS_FULL_S(s) puts(s)
#define DEBUG_DQS_FULL_D(d, l) printf("%x", d)
#else
#define DEBUG_DQS_FULL_S(s)
#define DEBUG_DQS_FULL_D(d, l)
#endif
/* State machine for centralization - find low & high limit */
enum {
PUP_ADLL_LIMITS_STATE_FAIL,
PUP_ADLL_LIMITS_STATE_PASS,
PUP_ADLL_LIMITS_STATE_FAIL_AFTER_PASS,
};
/* Hold centralization low results */
static int centralization_low_limit[MAX_PUP_NUM] = { 0 };
/* Hold centralization high results */
static int centralization_high_limit[MAX_PUP_NUM] = { 0 };
int ddr3_find_adll_limits(MV_DRAM_INFO *dram_info, u32 cs, u32 ecc, int is_tx);
int ddr3_check_window_limits(u32 pup, int high_limit, int low_limit, int is_tx,
int *size_valid);
static int ddr3_center_calc(MV_DRAM_INFO *dram_info, u32 cs, u32 ecc,
int is_tx);
int ddr3_special_pattern_i_search(MV_DRAM_INFO *dram_info, u32 cs, u32 ecc,
int is_tx, u32 special_pattern_pup);
int ddr3_special_pattern_ii_search(MV_DRAM_INFO *dram_info, u32 cs, u32 ecc,
int is_tx, u32 special_pattern_pup);
int ddr3_set_dqs_centralization_results(MV_DRAM_INFO *dram_info, u32 cs, u32 ecc,
int is_tx);
#ifdef MV88F78X60
extern u32 killer_pattern_32b[DQ_NUM][LEN_SPECIAL_PATTERN];
extern u32 killer_pattern_64b[DQ_NUM][LEN_SPECIAL_PATTERN];
extern int per_bit_data[MAX_PUP_NUM][DQ_NUM];
#else
extern u32 killer_pattern[DQ_NUM][LEN_16BIT_KILLER_PATTERN];
extern u32 killer_pattern_32b[DQ_NUM][LEN_SPECIAL_PATTERN];
#if defined(MV88F672X)
extern int per_bit_data[MAX_PUP_NUM][DQ_NUM];
#endif
#endif
extern u32 special_pattern[DQ_NUM][LEN_SPECIAL_PATTERN];
static u32 *ddr3_dqs_choose_pattern(MV_DRAM_INFO *dram_info, u32 victim_dq)
{
u32 *pattern_ptr;
/* Choose pattern */
switch (dram_info->ddr_width) {
#if defined(MV88F672X)
case 16:
pattern_ptr = (u32 *)&killer_pattern[victim_dq];
break;
#endif
case 32:
pattern_ptr = (u32 *)&killer_pattern_32b[victim_dq];
break;
#if defined(MV88F78X60)
case 64:
pattern_ptr = (u32 *)&killer_pattern_64b[victim_dq];
break;
#endif
default:
#if defined(MV88F78X60)
pattern_ptr = (u32 *)&killer_pattern_32b[victim_dq];
#else
pattern_ptr = (u32 *)&killer_pattern[victim_dq];
#endif
break;
}
return pattern_ptr;
}
/*
* Name: ddr3_dqs_centralization_rx
* Desc: Execute the DQS centralization RX phase.
* Args: dram_info
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_dqs_centralization_rx(MV_DRAM_INFO *dram_info)
{
u32 cs, ecc, reg;
int status;
DEBUG_DQS_S("DDR3 - DQS Centralization RX - Starting procedure\n");
/* Enable SW override */
reg = reg_read(REG_DRAM_TRAINING_2_ADDR) |
(1 << REG_DRAM_TRAINING_2_SW_OVRD_OFFS);
/* [0] = 1 - Enable SW override */
/* 0x15B8 - Training SW 2 Register */
reg_write(REG_DRAM_TRAINING_2_ADDR, reg);
DEBUG_DQS_S("DDR3 - DQS Centralization RX - SW Override Enabled\n");
reg = (1 << REG_DRAM_TRAINING_AUTO_OFFS);
reg_write(REG_DRAM_TRAINING_ADDR, reg); /* 0x15B0 - Training Register */
/* Loop for each CS */
for (cs = 0; cs < MAX_CS; cs++) {
if (dram_info->cs_ena & (1 << cs)) {
DEBUG_DQS_FULL_C("DDR3 - DQS Centralization RX - CS - ",
(u32) cs, 1);
for (ecc = 0; ecc < (dram_info->ecc_ena + 1); ecc++) {
/* ECC Support - Switch ECC Mux on ecc=1 */
reg = reg_read(REG_DRAM_TRAINING_2_ADDR) &
~(1 << REG_DRAM_TRAINING_2_ECC_MUX_OFFS);
reg |= (dram_info->ecc_ena *
ecc << REG_DRAM_TRAINING_2_ECC_MUX_OFFS);
reg_write(REG_DRAM_TRAINING_2_ADDR, reg);
if (ecc)
DEBUG_DQS_FULL_S("DDR3 - DQS Centralization RX - ECC Mux Enabled\n");
else
DEBUG_DQS_FULL_S("DDR3 - DQS Centralization RX - ECC Mux Disabled\n");
DEBUG_DQS_FULL_S("DDR3 - DQS Centralization RX - Find all limits\n");
status = ddr3_find_adll_limits(dram_info, cs,
ecc, 0);
if (MV_OK != status)
return status;
DEBUG_DQS_FULL_S("DDR3 - DQS Centralization RX - Start calculating center\n");
status = ddr3_center_calc(dram_info, cs, ecc,
0);
if (MV_OK != status)
return status;
}
}
}
/* ECC Support - Disable ECC MUX */
reg = reg_read(REG_DRAM_TRAINING_2_ADDR) &
~(1 << REG_DRAM_TRAINING_2_ECC_MUX_OFFS);
reg_write(REG_DRAM_TRAINING_2_ADDR, reg);
/* Disable SW override - Must be in a different stage */
/* [0]=0 - Enable SW override */
reg = reg_read(REG_DRAM_TRAINING_2_ADDR);
reg &= ~(1 << REG_DRAM_TRAINING_2_SW_OVRD_OFFS);
/* 0x15B8 - Training SW 2 Register */
reg_write(REG_DRAM_TRAINING_2_ADDR, reg);
reg = reg_read(REG_DRAM_TRAINING_1_ADDR) |
(1 << REG_DRAM_TRAINING_1_TRNBPOINT_OFFS);
reg_write(REG_DRAM_TRAINING_1_ADDR, reg);
return MV_OK;
}
/*
* Name: ddr3_dqs_centralization_tx
* Desc: Execute the DQS centralization TX phase.
* Args: dram_info
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_dqs_centralization_tx(MV_DRAM_INFO *dram_info)
{
u32 cs, ecc, reg;
int status;
DEBUG_DQS_S("DDR3 - DQS Centralization TX - Starting procedure\n");
/* Enable SW override */
reg = reg_read(REG_DRAM_TRAINING_2_ADDR) |
(1 << REG_DRAM_TRAINING_2_SW_OVRD_OFFS);
/* [0] = 1 - Enable SW override */
/* 0x15B8 - Training SW 2 Register */
reg_write(REG_DRAM_TRAINING_2_ADDR, reg);
DEBUG_DQS_S("DDR3 - DQS Centralization TX - SW Override Enabled\n");
reg = (1 << REG_DRAM_TRAINING_AUTO_OFFS);
reg_write(REG_DRAM_TRAINING_ADDR, reg); /* 0x15B0 - Training Register */
/* Loop for each CS */
for (cs = 0; cs < MAX_CS; cs++) {
if (dram_info->cs_ena & (1 << cs)) {
DEBUG_DQS_FULL_C("DDR3 - DQS Centralization TX - CS - ",
(u32) cs, 1);
for (ecc = 0; ecc < (dram_info->ecc_ena + 1); ecc++) {
/* ECC Support - Switch ECC Mux on ecc=1 */
reg = reg_read(REG_DRAM_TRAINING_2_ADDR) &
~(1 << REG_DRAM_TRAINING_2_ECC_MUX_OFFS);
reg |= (dram_info->ecc_ena *
ecc << REG_DRAM_TRAINING_2_ECC_MUX_OFFS);
reg_write(REG_DRAM_TRAINING_2_ADDR, reg);
if (ecc)
DEBUG_DQS_FULL_S("DDR3 - DQS Centralization TX - ECC Mux Enabled\n");
else
DEBUG_DQS_FULL_S("DDR3 - DQS Centralization TX - ECC Mux Disabled\n");
DEBUG_DQS_FULL_S("DDR3 - DQS Centralization TX - Find all limits\n");
status = ddr3_find_adll_limits(dram_info, cs,
ecc, 1);
if (MV_OK != status)
return status;
DEBUG_DQS_FULL_S("DDR3 - DQS Centralization TX - Start calculating center\n");
status = ddr3_center_calc(dram_info, cs, ecc,
1);
if (MV_OK != status)
return status;
}
}
}
/* ECC Support - Disable ECC MUX */
reg = reg_read(REG_DRAM_TRAINING_2_ADDR) &
~(1 << REG_DRAM_TRAINING_2_ECC_MUX_OFFS);
reg_write(REG_DRAM_TRAINING_2_ADDR, reg);
/* Disable SW override - Must be in a different stage */
/* [0]=0 - Enable SW override */
reg = reg_read(REG_DRAM_TRAINING_2_ADDR);
reg &= ~(1 << REG_DRAM_TRAINING_2_SW_OVRD_OFFS);
/* 0x15B8 - Training SW 2 Register */
reg_write(REG_DRAM_TRAINING_2_ADDR, reg);
reg = reg_read(REG_DRAM_TRAINING_1_ADDR) |
(1 << REG_DRAM_TRAINING_1_TRNBPOINT_OFFS);
reg_write(REG_DRAM_TRAINING_1_ADDR, reg);
return MV_OK;
}
/*
* Name: ddr3_find_adll_limits
* Desc: Execute the Find ADLL limits phase.
* Args: dram_info
* cs
* ecc_ena
* is_tx Indicate whether Rx or Tx
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_find_adll_limits(MV_DRAM_INFO *dram_info, u32 cs, u32 ecc, int is_tx)
{
u32 victim_dq, pup, tmp;
u32 adll_addr;
u32 max_pup; /* maximal pup index */
u32 pup_mask = 0;
u32 unlock_pup; /* bit array of un locked pups */
u32 new_unlock_pup; /* bit array of compare failed pups */
u32 curr_adll;
u32 adll_start_val; /* adll start loop value - for rx or tx limit */
u32 high_limit; /* holds found High Limit */
u32 low_limit; /* holds found Low Limit */
int win_valid;
int update_win;
u32 sdram_offset;
u32 uj, cs_count, cs_tmp, ii;
u32 *pattern_ptr;
u32 dq;
u32 adll_end_val; /* adll end of loop val - for rx or tx limit */
u8 analog_pbs[DQ_NUM][MAX_PUP_NUM][DQ_NUM][2];
u8 analog_pbs_sum[MAX_PUP_NUM][DQ_NUM][2];
int pup_adll_limit_state[MAX_PUP_NUM]; /* hold state of each pup */
adll_addr = ((is_tx == 1) ? PUP_DQS_WR : PUP_DQS_RD);
adll_end_val = ((is_tx == 1) ? ADLL_MIN : ADLL_MAX);
adll_start_val = ((is_tx == 1) ? ADLL_MAX : ADLL_MIN);
max_pup = (ecc + (1 - ecc) * dram_info->num_of_std_pups);
DEBUG_DQS_FULL_S("DDR3 - DQS Find Limits - Starting Find ADLL Limits\n");
/* init the array */
for (pup = 0; pup < max_pup; pup++) {
centralization_low_limit[pup] = ADLL_MIN;
centralization_high_limit[pup] = ADLL_MAX;
}
/* Killer Pattern */
cs_count = 0;
for (cs_tmp = 0; cs_tmp < cs; cs_tmp++) {
if (dram_info->cs_ena & (1 << cs_tmp))
cs_count++;
}
sdram_offset = cs_count * (SDRAM_CS_SIZE + 1);
sdram_offset += ((is_tx == 1) ?
SDRAM_DQS_TX_OFFS : SDRAM_DQS_RX_OFFS);
/* Prepare pup masks */
for (pup = 0; pup < max_pup; pup++)
pup_mask |= (1 << pup);
for (pup = 0; pup < max_pup; pup++) {
for (dq = 0; dq < DQ_NUM; dq++) {
analog_pbs_sum[pup][dq][0] = adll_start_val;
analog_pbs_sum[pup][dq][1] = adll_end_val;
}
}
/* Loop - use different pattern for each victim_dq */
for (victim_dq = 0; victim_dq < DQ_NUM; victim_dq++) {
DEBUG_DQS_FULL_C("DDR3 - DQS Find Limits - Victim DQ - ",
(u32)victim_dq, 1);
/*
* The pups 3 bit arrays represent state machine. with
* 3 stages for each pup.
* 1. fail and didn't get pass in earlier compares.
* 2. pass compare
* 3. fail after pass - end state.
* The window limits are the adll values where the adll
* was in the pass stage.
*/
/* Set all states to Fail (1st state) */
for (pup = 0; pup < max_pup; pup++)
pup_adll_limit_state[pup] = PUP_ADLL_LIMITS_STATE_FAIL;
/* Set current valid pups */
unlock_pup = pup_mask;
/* Set ADLL to start value */
curr_adll = adll_start_val;
#if defined(MV88F78X60)
for (pup = 0; pup < max_pup; pup++) {
for (dq = 0; dq < DQ_NUM; dq++) {
analog_pbs[victim_dq][pup][dq][0] =
adll_start_val;
analog_pbs[victim_dq][pup][dq][1] =
adll_end_val;
per_bit_data[pup][dq] = 0;
}
}
#endif
for (uj = 0; uj < ADLL_MAX; uj++) {
DEBUG_DQS_FULL_C("DDR3 - DQS Find Limits - Setting ADLL to ",
curr_adll, 2);
for (pup = 0; pup < max_pup; pup++) {
if (IS_PUP_ACTIVE(unlock_pup, pup) == 1) {
tmp = ((is_tx == 1) ? curr_adll +
dram_info->wl_val[cs]
[pup * (1 - ecc) + ecc * ECC_PUP]
[D] : curr_adll);
ddr3_write_pup_reg(adll_addr, cs, pup +
(ecc * ECC_PUP), 0, tmp);
}
}
/* Choose pattern */
pattern_ptr = ddr3_dqs_choose_pattern(dram_info,
victim_dq);
/* '1' - means pup failed, '0' - means pup pass */
new_unlock_pup = 0;
/* Read and compare results for Victim_DQ# */
for (ii = 0; ii < 3; ii++) {
u32 tmp = 0;
if (MV_OK != ddr3_sdram_dqs_compare(dram_info,
unlock_pup, &tmp,
pattern_ptr,
LEN_KILLER_PATTERN,
sdram_offset +
LEN_KILLER_PATTERN *
4 * victim_dq,
is_tx, 0, NULL,
0))
return MV_DDR3_TRAINING_ERR_DRAM_COMPARE;
new_unlock_pup |= tmp;
}
pup = 0;
DEBUG_DQS_FULL_C("DDR3 - DQS Find Limits - UnlockPup: ",
unlock_pup, 2);
DEBUG_DQS_FULL_C("DDR3 - DQS Find Limits - NewUnlockPup: ",
new_unlock_pup, 2);
/* Update pup state */
for (pup = 0; pup < max_pup; pup++) {
if (IS_PUP_ACTIVE(unlock_pup, pup) == 0) {
DEBUG_DQS_FULL_C("DDR3 - DQS Find Limits - Skipping pup ",
pup, 1);
continue;
}
/*
* Still didn't find the window limit of the pup
*/
if (IS_PUP_ACTIVE(new_unlock_pup, pup) == 1) {
/* Current compare result == fail */
if (pup_adll_limit_state[pup] ==
PUP_ADLL_LIMITS_STATE_PASS) {
/*
* If now it failed but passed
* earlier
*/
DEBUG_DQS_S("DDR3 - DQS Find Limits - PASS to FAIL: CS - ");
DEBUG_DQS_D(cs, 1);
DEBUG_DQS_S(", DQ - ");
DEBUG_DQS_D(victim_dq, 1);
DEBUG_DQS_S(", Pup - ");
DEBUG_DQS_D(pup, 1);
DEBUG_DQS_S(", ADLL - ");
DEBUG_DQS_D(curr_adll, 2);
DEBUG_DQS_S("\n");
#if defined(MV88F78X60)
for (dq = 0; dq < DQ_NUM; dq++) {
if ((analog_pbs[victim_dq][pup][dq][0] != adll_start_val)
&& (analog_pbs[victim_dq][pup]
[dq][1] == adll_end_val))
analog_pbs
[victim_dq]
[pup][dq]
[1] =
curr_adll;
}
#endif
win_valid = 1;
update_win = 0;
/* Keep min / max limit value */
if (is_tx == 0) {
/* RX - found upper limit */
if (centralization_high_limit[pup] >
(curr_adll - 1)) {
high_limit =
curr_adll - 1;
low_limit =
centralization_low_limit[pup];
update_win = 1;
}
} else {
/* TX - found lower limit */
if (centralization_low_limit[pup] < (curr_adll + 1)) {
high_limit =
centralization_high_limit
[pup];
low_limit =
curr_adll + 1;
update_win =
1;
}
}
if (update_win == 1) {
/*
* Before updating
* window limits we need
* to check that the
* limits are valid
*/
if (MV_OK !=
ddr3_check_window_limits
(pup, high_limit,
low_limit, is_tx,
&win_valid))
return MV_DDR3_TRAINING_ERR_WIN_LIMITS;
if (win_valid == 1) {
/*
* Window limits
* should be
* updated
*/
centralization_low_limit
[pup] =
low_limit;
centralization_high_limit
[pup] =
high_limit;
}
}
if (win_valid == 1) {
/* Found end of window - lock the pup */
pup_adll_limit_state[pup] =
PUP_ADLL_LIMITS_STATE_FAIL_AFTER_PASS;
unlock_pup &= ~(1 << pup);
} else {
/* Probably false pass - reset status */
pup_adll_limit_state[pup] =
PUP_ADLL_LIMITS_STATE_FAIL;
#if defined(MV88F78X60)
/* Clear logging array of win size (per Dq) */
for (dq = 0;
dq < DQ_NUM;
dq++) {
analog_pbs
[victim_dq]
[pup][dq]
[0] =
adll_start_val;
analog_pbs
[victim_dq]
[pup][dq]
[1] =
adll_end_val;
per_bit_data
[pup][dq]
= 0;
}
#endif
}
}
} else {
/* Current compare result == pass */
if (pup_adll_limit_state[pup] ==
PUP_ADLL_LIMITS_STATE_FAIL) {
/* If now it passed but failed earlier */
DEBUG_DQS_S("DDR3 - DQS Find Limits - FAIL to PASS: CS - ");
DEBUG_DQS_D(cs, 1);
DEBUG_DQS_S(", DQ - ");
DEBUG_DQS_D(victim_dq, 1);
DEBUG_DQS_S(", Pup - ");
DEBUG_DQS_D(pup, 1);
DEBUG_DQS_S(", ADLL - ");
DEBUG_DQS_D(curr_adll, 2);
DEBUG_DQS_S("\n");
#if defined(MV88F78X60)
for (dq = 0; dq < DQ_NUM;
dq++) {
if (analog_pbs[victim_dq][pup][dq][0] == adll_start_val)
analog_pbs
[victim_dq]
[pup][dq]
[0] =
curr_adll;
}
#endif
/* Found start of window */
pup_adll_limit_state[pup] =
PUP_ADLL_LIMITS_STATE_PASS;
/* Keep min / max limit value */
if (is_tx == 0) {
/* RX - found low limit */
if (centralization_low_limit[pup] <= curr_adll)
centralization_low_limit
[pup] =
curr_adll;
} else {
/* TX - found high limit */
if (centralization_high_limit[pup] >= curr_adll)
centralization_high_limit
[pup] =
curr_adll;
}
}
}
}
if (unlock_pup == 0) {
/* Found limit to all pups */
DEBUG_DQS_FULL_S("DDR3 - DQS Find Limits - found PUP limit\n");
break;
}
/*
* Increment / decrement (Move to right / left
* one phase - ADLL) dqs RX / TX delay (for all un
* lock pups
*/
if (is_tx == 0)
curr_adll++;
else
curr_adll--;
}
if (unlock_pup != 0) {
/*
* Found pups that didn't reach to the end of the
* state machine
*/
DEBUG_DQS_C("DDR3 - DQS Find Limits - Pups that didn't reached end of the state machine: ",
unlock_pup, 1);
for (pup = 0; pup < max_pup; pup++) {
if (IS_PUP_ACTIVE(unlock_pup, pup) == 1) {
if (pup_adll_limit_state[pup] ==
PUP_ADLL_LIMITS_STATE_FAIL) {
/* ERROR - found fail for all window size */
DEBUG_DQS_S("DDR3 - DQS Find Limits - Got FAIL for the complete range on pup - ");
DEBUG_DQS_D(pup, 1);
DEBUG_DQS_C(" victim DQ ",
victim_dq, 1);
/* For debug - set min limit to illegal limit */
centralization_low_limit[pup]
= ADLL_ERROR;
/*
* In case the pup is in mode
* PASS - the limit is the min
* / max adll, no need to
* update because of the results
* array default value
*/
return MV_DDR3_TRAINING_ERR_PUP_RANGE;
}
}
}
}
}
DEBUG_DQS_S("DDR3 - DQS Find Limits - DQ values per victim results:\n");
for (victim_dq = 0; victim_dq < DQ_NUM; victim_dq++) {
for (pup = 0; pup < max_pup; pup++) {
DEBUG_DQS_S("Victim DQ-");
DEBUG_DQS_D(victim_dq, 1);
DEBUG_DQS_S(", PUP-");
DEBUG_DQS_D(pup, 1);
for (dq = 0; dq < DQ_NUM; dq++) {
DEBUG_DQS_S(", DQ-");
DEBUG_DQS_D(dq, 1);
DEBUG_DQS_S(",S-");
DEBUG_DQS_D(analog_pbs[victim_dq][pup][dq]
[0], 2);
DEBUG_DQS_S(",E-");
DEBUG_DQS_D(analog_pbs[victim_dq][pup][dq]
[1], 2);
if (is_tx == 0) {
if (analog_pbs[victim_dq][pup][dq][0]
> analog_pbs_sum[pup][dq][0])
analog_pbs_sum[pup][dq][0] =
analog_pbs[victim_dq][pup]
[dq][0];
if (analog_pbs[victim_dq][pup][dq][1]
< analog_pbs_sum[pup][dq][1])
analog_pbs_sum[pup][dq][1] =
analog_pbs[victim_dq][pup]
[dq][1];
} else {
if (analog_pbs[victim_dq][pup][dq][0]
< analog_pbs_sum[pup][dq][0])
analog_pbs_sum[pup][dq][0] =
analog_pbs[victim_dq][pup]
[dq][0];
if (analog_pbs[victim_dq][pup][dq][1]
> analog_pbs_sum[pup][dq][1])
analog_pbs_sum[pup][dq][1] =
analog_pbs[victim_dq][pup]
[dq][1];
}
}
DEBUG_DQS_S("\n");
}
}
if (ddr3_get_log_level() >= MV_LOG_LEVEL_3) {
u32 dq;
DEBUG_PER_DQ_S("\n########## LOG LEVEL 3(Windows margins per-DQ) ##########\n");
if (is_tx) {
DEBUG_PER_DQ_C("DDR3 - TX CS: ", cs, 1);
} else {
DEBUG_PER_DQ_C("DDR3 - RX CS: ", cs, 1);
}
if (ecc == 0) {
DEBUG_PER_DQ_S("\n DATA RESULTS:\n");
} else {
DEBUG_PER_DQ_S("\n ECC RESULTS:\n");
}
/* Since all dq has the same value we take 0 as representive */
dq = 0;
for (pup = 0; pup < max_pup; pup++) {
if (ecc == 0) {
DEBUG_PER_DQ_S("\nBYTE:");
DEBUG_PER_DQ_D(pup, 1);
DEBUG_PER_DQ_S("\n");
} else {
DEBUG_PER_DQ_S("\nECC BYTE:\n");
}
DEBUG_PER_DQ_S(" DQ's LOW HIGH WIN-SIZE\n");
DEBUG_PER_DQ_S("============================================\n");
for (victim_dq = 0; victim_dq < DQ_NUM; victim_dq++) {
if (ecc == 0) {
DEBUG_PER_DQ_S("DQ[");
DEBUG_PER_DQ_DD((victim_dq +
DQ_NUM * pup), 2);
DEBUG_PER_DQ_S("]");
} else {
DEBUG_PER_DQ_S("CB[");
DEBUG_PER_DQ_DD(victim_dq, 2);
DEBUG_PER_DQ_S("]");
}
if (is_tx) {
DEBUG_PER_DQ_S(" 0x");
DEBUG_PER_DQ_D(analog_pbs[victim_dq][pup][dq][1], 2); /* low value */
DEBUG_PER_DQ_S(" 0x");
DEBUG_PER_DQ_D(analog_pbs[victim_dq][pup][dq][0], 2); /* high value */
DEBUG_PER_DQ_S(" 0x");
DEBUG_PER_DQ_D(analog_pbs[victim_dq][pup][dq][0] - analog_pbs[victim_dq][pup][dq][1], 2); /* win-size */
} else {
DEBUG_PER_DQ_S(" 0x");
DEBUG_PER_DQ_D(analog_pbs[victim_dq][pup][dq][0], 2); /* low value */
DEBUG_PER_DQ_S(" 0x");
DEBUG_PER_DQ_D((analog_pbs[victim_dq][pup][dq][1] - 1), 2); /* high value */
DEBUG_PER_DQ_S(" 0x");
DEBUG_PER_DQ_D(analog_pbs[victim_dq][pup][dq][1] - analog_pbs[victim_dq][pup][dq][0], 2); /* win-size */
}
DEBUG_PER_DQ_S("\n");
}
}
DEBUG_PER_DQ_S("\n");
}
if (is_tx) {
DEBUG_DQS_S("DDR3 - DQS TX - Find Limits - DQ values Summary:\n");
} else {
DEBUG_DQS_S("DDR3 - DQS RX - Find Limits - DQ values Summary:\n");
}
for (pup = 0; pup < max_pup; pup++) {
DEBUG_DQS_S("PUP-");
DEBUG_DQS_D(pup, 1);
for (dq = 0; dq < DQ_NUM; dq++) {
DEBUG_DQS_S(", DQ-");
DEBUG_DQS_D(dq, 1);
DEBUG_DQS_S(",S-");
DEBUG_DQS_D(analog_pbs_sum[pup][dq][0], 2);
DEBUG_DQS_S(",E-");
DEBUG_DQS_D(analog_pbs_sum[pup][dq][1], 2);
}
DEBUG_DQS_S("\n");
}
if (is_tx) {
DEBUG_DQS_S("DDR3 - DQS TX - Find Limits - DQ values Summary:\n");
} else {
DEBUG_DQS_S("DDR3 - DQS RX - Find Limits - DQ values Summary:\n");
}
for (pup = 0; pup < max_pup; pup++) {
if (max_pup == 1) {
/* For ECC PUP */
DEBUG_DQS_S("DDR3 - DQS8");
} else {
DEBUG_DQS_S("DDR3 - DQS");
DEBUG_DQS_D(pup, 1);
}
for (dq = 0; dq < DQ_NUM; dq++) {
DEBUG_DQS_S(", DQ-");
DEBUG_DQS_D(dq, 1);
DEBUG_DQS_S("::S-");
DEBUG_DQS_D(analog_pbs_sum[pup][dq][0], 2);
DEBUG_DQS_S(",E-");
DEBUG_DQS_D(analog_pbs_sum[pup][dq][1], 2);
}
DEBUG_DQS_S("\n");
}
DEBUG_DQS_S("DDR3 - DQS Find Limits - Ended\n");
return MV_OK;
}
/*
* Name: ddr3_check_window_limits
* Desc: Check window High & Low limits.
* Args: pup pup index
* high_limit window high limit
* low_limit window low limit
* is_tx Indicate whether Rx or Tx
* size_valid Indicate whether window size is valid
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_check_window_limits(u32 pup, int high_limit, int low_limit, int is_tx,
int *size_valid)
{
DEBUG_DQS_FULL_S("DDR3 - DQS Check Win Limits - Starting\n");
if (low_limit > high_limit) {
DEBUG_DQS_S("DDR3 - DQS Check Win Limits - Pup ");
DEBUG_DQS_D(pup, 1);
DEBUG_DQS_S(" Low Limit grater than High Limit\n");
*size_valid = 0;
return MV_OK;
}
/*
* Check that window size is valid, if not it was probably false pass
* before
*/
if ((high_limit - low_limit) < MIN_WIN_SIZE) {
/*
* Since window size is too small probably there was false
* pass
*/
*size_valid = 0;
DEBUG_DQS_S("DDR3 - DQS Check Win Limits - Pup ");
DEBUG_DQS_D(pup, 1);
DEBUG_DQS_S(" Window size is smaller than MIN_WIN_SIZE\n");
} else if ((high_limit - low_limit) > ADLL_MAX) {
*size_valid = 0;
DEBUG_DQS_S("DDR3 - DQS Check Win Limits - Pup ");
DEBUG_DQS_D(pup, 1);
DEBUG_DQS_S
(" Window size is bigger than max ADLL taps (31) Exiting.\n");
return MV_FAIL;
} else {
*size_valid = 1;
DEBUG_DQS_FULL_S("DDR3 - DQS Check Win Limits - Pup ");
DEBUG_DQS_FULL_D(pup, 1);
DEBUG_DQS_FULL_C(" window size is ", (high_limit - low_limit),
2);
}
return MV_OK;
}
/*
* Name: ddr3_center_calc
* Desc: Execute the calculate the center of windows phase.
* Args: pDram Info
* is_tx Indicate whether Rx or Tx
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
static int ddr3_center_calc(MV_DRAM_INFO *dram_info, u32 cs, u32 ecc,
int is_tx)
{
/* bit array of pups that need specail search */
u32 special_pattern_i_pup = 0;
u32 special_pattern_ii_pup = 0;
u32 pup;
u32 max_pup;
max_pup = (ecc + (1 - ecc) * dram_info->num_of_std_pups);
for (pup = 0; pup < max_pup; pup++) {
if (is_tx == 0) {
/* Check special pattern I */
/*
* Special pattern Low limit search - relevant only
* for Rx, win size < threshold and low limit = 0
*/
if (((centralization_high_limit[pup] -
centralization_low_limit[pup]) < VALID_WIN_THRS)
&& (centralization_low_limit[pup] == MIN_DELAY))
special_pattern_i_pup |= (1 << pup);
/* Check special pattern II */
/*
* Special pattern High limit search - relevant only
* for Rx, win size < threshold and high limit = 31
*/
if (((centralization_high_limit[pup] -
centralization_low_limit[pup]) < VALID_WIN_THRS)
&& (centralization_high_limit[pup] == MAX_DELAY))
special_pattern_ii_pup |= (1 << pup);
}
}
/* Run special pattern Low limit search - for relevant pup */
if (special_pattern_i_pup != 0) {
DEBUG_DQS_S("DDR3 - DQS Center Calc - Entering special pattern I for Low limit search\n");
if (MV_OK !=
ddr3_special_pattern_i_search(dram_info, cs, ecc, is_tx,
special_pattern_i_pup))
return MV_DDR3_TRAINING_ERR_DQS_LOW_LIMIT_SEARCH;
}
/* Run special pattern High limit search - for relevant pup */
if (special_pattern_ii_pup != 0) {
DEBUG_DQS_S("DDR3 - DQS Center Calc - Entering special pattern II for High limit search\n");
if (MV_OK !=
ddr3_special_pattern_ii_search(dram_info, cs, ecc, is_tx,
special_pattern_ii_pup))
return MV_DDR3_TRAINING_ERR_DQS_HIGH_LIMIT_SEARCH;
}
/* Set adll to center = (General_High_limit + General_Low_limit)/2 */
return ddr3_set_dqs_centralization_results(dram_info, cs, ecc, is_tx);
}
/*
* Name: ddr3_special_pattern_i_search
* Desc: Execute special pattern low limit search.
* Args:
* special_pattern_pup The pups that need the special search
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_special_pattern_i_search(MV_DRAM_INFO *dram_info, u32 cs, u32 ecc,
int is_tx, u32 special_pattern_pup)
{
u32 victim_dq; /* loop index - victim DQ */
u32 adll_idx;
u32 pup;
u32 unlock_pup; /* bit array of the unlock pups */
u32 first_fail; /* bit array - of pups that get first fail */
u32 new_lockup_pup; /* bit array of compare failed pups */
u32 pass_pup; /* bit array of compare pass pup */
u32 sdram_offset;
u32 max_pup;
u32 comp_val;
u32 special_res[MAX_PUP_NUM]; /* hold tmp results */
DEBUG_DQS_S("DDR3 - DQS - Special Pattern I Search - Starting\n");
max_pup = ecc + (1 - ecc) * dram_info->num_of_std_pups;
/* Init the temporary results to max ADLL value */
for (pup = 0; pup < max_pup; pup++)
special_res[pup] = ADLL_MAX;
/* Run special pattern for all DQ - use the same pattern */
for (victim_dq = 0; victim_dq < DQ_NUM; victim_dq++) {
unlock_pup = special_pattern_pup;
first_fail = 0;
sdram_offset = cs * SDRAM_CS_SIZE + SDRAM_DQS_RX_OFFS +
LEN_KILLER_PATTERN * 4 * victim_dq;
for (pup = 0; pup < max_pup; pup++) {
/* Set adll value per PUP. adll = high limit per pup */
if (IS_PUP_ACTIVE(unlock_pup, pup)) {
/* only for pups that need special search */
ddr3_write_pup_reg(PUP_DQS_RD, cs,
pup + (ecc * ECC_PUP), 0,
centralization_high_limit
[pup]);
}
}
adll_idx = 0;
do {
/*
* Perform read and compare simultaneously for all
* un-locked MC use the special pattern mask
*/
new_lockup_pup = 0;
if (MV_OK !=
ddr3_sdram_dqs_compare(dram_info, unlock_pup,
&new_lockup_pup,
special_pattern
[victim_dq],
LEN_SPECIAL_PATTERN,
sdram_offset, 0,
0, NULL, 1))
return MV_FAIL;
DEBUG_DQS_S("DDR3 - DQS - Special I - ADLL value is: ");
DEBUG_DQS_D(adll_idx, 2);
DEBUG_DQS_S(", UnlockPup: ");
DEBUG_DQS_D(unlock_pup, 2);
DEBUG_DQS_S(", NewLockPup: ");
DEBUG_DQS_D(new_lockup_pup, 2);
DEBUG_DQS_S("\n");
if (unlock_pup != new_lockup_pup)
DEBUG_DQS_S("DDR3 - DQS - Special I - Some Pup passed!\n");
/* Search for pups with passed compare & already fail */
pass_pup = first_fail & ~new_lockup_pup & unlock_pup;
first_fail |= new_lockup_pup;
unlock_pup &= ~pass_pup;
/* Get pass pups */
if (pass_pup != 0) {
for (pup = 0; pup < max_pup; pup++) {
if (IS_PUP_ACTIVE(pass_pup, pup) ==
1) {
/* If pup passed and has first fail = 1 */
/* keep min value of ADLL max value - current adll */
/* (centralization_high_limit[pup] + adll_idx) = current adll !!! */
comp_val =
(ADLL_MAX -
(centralization_high_limit
[pup] + adll_idx));
DEBUG_DQS_C
("DDR3 - DQS - Special I - Pup - ",
pup, 1);
DEBUG_DQS_C
(" comp_val = ",
comp_val, 2);
if (comp_val <
special_res[pup]) {
special_res[pup] =
comp_val;
centralization_low_limit
[pup] =
(-1) *
comp_val;
DEBUG_DQS_C
("DDR3 - DQS - Special I - Pup - ",
pup, 1);
DEBUG_DQS_C
(" Changed Low limit to ",
centralization_low_limit
[pup], 2);
}
}
}
}
/*
* Did all PUP found missing window?
* Check for each pup if adll (different for each pup)
* reach maximum if reach max value - lock the pup
* if not - increment (Move to right one phase - ADLL)
* dqs RX delay
*/
adll_idx++;
for (pup = 0; pup < max_pup; pup++) {
if (IS_PUP_ACTIVE(unlock_pup, pup) == 1) {
/* Check only unlocked pups */
if ((centralization_high_limit[pup] +
adll_idx) >= ADLL_MAX) {
/* reach maximum - lock the pup */
DEBUG_DQS_C("DDR3 - DQS - Special I - reach maximum - lock pup ",
pup, 1);
unlock_pup &= ~(1 << pup);
} else {
/* Didn't reach maximum - increment ADLL */
ddr3_write_pup_reg(PUP_DQS_RD,
cs,
pup +
(ecc *
ECC_PUP), 0,
(centralization_high_limit
[pup] +
adll_idx));
}
}
}
} while (unlock_pup != 0);
}
return MV_OK;
}
/*
* Name: ddr3_special_pattern_ii_search
* Desc: Execute special pattern high limit search.
* Args:
* special_pattern_pup The pups that need the special search
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_special_pattern_ii_search(MV_DRAM_INFO *dram_info, u32 cs, u32 ecc,
int is_tx, u32 special_pattern_pup)
{
u32 victim_dq; /* loop index - victim DQ */
u32 adll_idx;
u32 pup;
u32 unlock_pup; /* bit array of the unlock pups */
u32 first_fail; /* bit array - of pups that get first fail */
u32 new_lockup_pup; /* bit array of compare failed pups */
u32 pass_pup; /* bit array of compare pass pup */
u32 sdram_offset;
u32 max_pup;
u32 comp_val;
u32 special_res[MAX_PUP_NUM]; /* hold tmp results */
DEBUG_DQS_S("DDR3 - DQS - Special Pattern II Search - Starting\n");
max_pup = (ecc + (1 - ecc) * dram_info->num_of_std_pups);
/* init the tmporary results to max ADLL value */
for (pup = 0; pup < max_pup; pup++)
special_res[pup] = ADLL_MAX;
sdram_offset = cs * SDRAM_CS_SIZE + SDRAM_DQS_RX_OFFS;
/* run special pattern for all DQ - use the same pattern */
for (victim_dq = 0; victim_dq < DQ_NUM; victim_dq++) {
unlock_pup = special_pattern_pup;
first_fail = 0;
for (pup = 0; pup < max_pup; pup++) {
/* Set adll value per PUP. adll = 0 */
if (IS_PUP_ACTIVE(unlock_pup, pup)) {
/* Only for pups that need special search */
ddr3_write_pup_reg(PUP_DQS_RD, cs,
pup + (ecc * ECC_PUP), 0,
ADLL_MIN);
}
}
adll_idx = 0;
do {
/*
* Perform read and compare simultaneously for all
* un-locked MC use the special pattern mask
*/
new_lockup_pup = 0;
if (MV_OK != ddr3_sdram_dqs_compare(
dram_info, unlock_pup, &new_lockup_pup,
special_pattern[victim_dq],
LEN_SPECIAL_PATTERN,
sdram_offset, 0, 0, NULL, 0))
return MV_FAIL;
DEBUG_DQS_S("DDR3 - DQS - Special II - ADLL value is ");
DEBUG_DQS_D(adll_idx, 2);
DEBUG_DQS_S("unlock_pup ");
DEBUG_DQS_D(unlock_pup, 1);
DEBUG_DQS_S("new_lockup_pup ");
DEBUG_DQS_D(new_lockup_pup, 1);
DEBUG_DQS_S("\n");
if (unlock_pup != new_lockup_pup) {
DEBUG_DQS_S("DDR3 - DQS - Special II - Some Pup passed!\n");
}
/* Search for pups with passed compare & already fail */
pass_pup = first_fail & ~new_lockup_pup & unlock_pup;
first_fail |= new_lockup_pup;
unlock_pup &= ~pass_pup;
/* Get pass pups */
if (pass_pup != 0) {
for (pup = 0; pup < max_pup; pup++) {
if (IS_PUP_ACTIVE(pass_pup, pup) ==
1) {
/* If pup passed and has first fail = 1 */
/* keep min value of ADLL max value - current adll */
/* (adll_idx) = current adll !!! */
comp_val = adll_idx;
DEBUG_DQS_C("DDR3 - DQS - Special II - Pup - ",
pup, 1);
DEBUG_DQS_C(" comp_val = ",
comp_val, 1);
if (comp_val <
special_res[pup]) {
special_res[pup] =
comp_val;
centralization_high_limit
[pup] =
ADLL_MAX +
comp_val;
DEBUG_DQS_C
("DDR3 - DQS - Special II - Pup - ",
pup, 1);
DEBUG_DQS_C
(" Changed High limit to ",
centralization_high_limit
[pup], 2);
}
}
}
}
/*
* Did all PUP found missing window?
* Check for each pup if adll (different for each pup)
* reach maximum if reach max value - lock the pup
* if not - increment (Move to right one phase - ADLL)
* dqs RX delay
*/
adll_idx++;
for (pup = 0; pup < max_pup; pup++) {
if (IS_PUP_ACTIVE(unlock_pup, pup) == 1) {
/* Check only unlocked pups */
if ((adll_idx) >= ADLL_MAX) {
/* Reach maximum - lock the pup */
DEBUG_DQS_C("DDR3 - DQS - Special II - reach maximum - lock pup ",
pup, 1);
unlock_pup &= ~(1 << pup);
} else {
/* Didn't reach maximum - increment ADLL */
ddr3_write_pup_reg(PUP_DQS_RD,
cs,
pup +
(ecc *
ECC_PUP), 0,
(adll_idx));
}
}
}
} while (unlock_pup != 0);
}
return MV_OK;
}
/*
* Name: ddr3_set_dqs_centralization_results
* Desc: Set to HW the DQS centralization phase results.
* Args:
* is_tx Indicates whether to set Tx or RX results
* Notes:
* Returns: MV_OK if success, other error code if fail.
*/
int ddr3_set_dqs_centralization_results(MV_DRAM_INFO *dram_info, u32 cs,
u32 ecc, int is_tx)
{
u32 pup, pup_num;
int addl_val;
u32 max_pup;
max_pup = (ecc + (1 - ecc) * dram_info->num_of_std_pups);
DEBUG_DQS_RESULTS_S("\n############ LOG LEVEL 2(Windows margins) ############\n");
if (is_tx) {
DEBUG_DQS_RESULTS_C("DDR3 - DQS TX - Set Dqs Centralization Results - CS: ",
cs, 1);
} else {
DEBUG_DQS_RESULTS_C("DDR3 - DQS RX - Set Dqs Centralization Results - CS: ",
cs, 1);
}
/* Set adll to center = (General_High_limit + General_Low_limit)/2 */
DEBUG_DQS_RESULTS_S("\nDQS LOW HIGH WIN-SIZE Set\n");
DEBUG_DQS_RESULTS_S("==============================================\n");
for (pup = 0; pup < max_pup; pup++) {
addl_val = (centralization_high_limit[pup] +
centralization_low_limit[pup]) / 2;
pup_num = pup * (1 - ecc) + ecc * ECC_PUP;
DEBUG_DQS_RESULTS_D(pup_num, 1);
DEBUG_DQS_RESULTS_S(" 0x");
DEBUG_DQS_RESULTS_D(centralization_low_limit[pup], 2);
DEBUG_DQS_RESULTS_S(" 0x");
DEBUG_DQS_RESULTS_D(centralization_high_limit[pup], 2);
DEBUG_DQS_RESULTS_S(" 0x");
DEBUG_DQS_RESULTS_D(centralization_high_limit[pup] -
centralization_low_limit[pup], 2);
DEBUG_DQS_RESULTS_S(" 0x");
DEBUG_DQS_RESULTS_D(addl_val, 2);
DEBUG_DQS_RESULTS_S("\n");
if (addl_val < ADLL_MIN) {
addl_val = ADLL_MIN;
DEBUG_DQS_RESULTS_S("DDR3 - DQS - Setting ADLL value for Pup to MIN (since it was lower than 0)\n");
}
if (addl_val > ADLL_MAX) {
addl_val = ADLL_MAX;
DEBUG_DQS_RESULTS_S("DDR3 - DQS - Setting ADLL value for Pup to MAX (since it was higher than 31)\n");
}
if (is_tx) {
ddr3_write_pup_reg(PUP_DQS_WR, cs, pup_num, 0,
addl_val +
dram_info->wl_val[cs][pup_num][D]);
} else {
ddr3_write_pup_reg(PUP_DQS_RD, cs, pup_num, 0,
addl_val);
}
}
return MV_OK;
}
/*
* Set training patterns
*/
int ddr3_load_dqs_patterns(MV_DRAM_INFO *dram_info)
{
u32 cs, cs_count, cs_tmp, victim_dq;
u32 sdram_addr;
u32 *pattern_ptr;
/* Loop for each CS */
for (cs = 0; cs < MAX_CS; cs++) {
if (dram_info->cs_ena & (1 << cs)) {
cs_count = 0;
for (cs_tmp = 0; cs_tmp < cs; cs_tmp++) {
if (dram_info->cs_ena & (1 << cs_tmp))
cs_count++;
}
/* Init killer pattern */
sdram_addr = (cs_count * (SDRAM_CS_SIZE + 1) +
SDRAM_DQS_RX_OFFS);
for (victim_dq = 0; victim_dq < DQ_NUM; victim_dq++) {
pattern_ptr = ddr3_dqs_choose_pattern(dram_info,
victim_dq);
if (MV_OK != ddr3_sdram_dqs_compare(
dram_info, (u32)NULL, NULL,
pattern_ptr, LEN_KILLER_PATTERN,
sdram_addr + LEN_KILLER_PATTERN *
4 * victim_dq, 1, 0, NULL,
0))
return MV_DDR3_TRAINING_ERR_DQS_PATTERN;
}
/* Init special-killer pattern */
sdram_addr = (cs_count * (SDRAM_CS_SIZE + 1) +
SDRAM_DQS_RX_SPECIAL_OFFS);
for (victim_dq = 0; victim_dq < DQ_NUM; victim_dq++) {
if (MV_OK != ddr3_sdram_dqs_compare(
dram_info, (u32)NULL, NULL,
special_pattern[victim_dq],
LEN_KILLER_PATTERN, sdram_addr +
LEN_KILLER_PATTERN * 4 * victim_dq,
1, 0, NULL, 0))
return MV_DDR3_TRAINING_ERR_DQS_PATTERN;
}
}
}
return MV_OK;
}