60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* Copyright (c) 2019 MediaTek Inc.
|
||
|
|
* Author: Sagy Shih <sagy.shih@mediatek.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
|
||
|
|
#include <mt_emi.h>
|
||
|
|
#include "pasr_api_v1.h"
|
||
|
|
|
||
|
|
/* acquire DRAM Setting for PASR/DPD */
|
||
|
|
static unsigned int get_segment_nr(unsigned int rk_index)
|
||
|
|
{
|
||
|
|
unsigned int rank_size;
|
||
|
|
unsigned int num_of_1;
|
||
|
|
unsigned int i;
|
||
|
|
|
||
|
|
rank_size = get_rank_size(rk_index) / get_ch_num();
|
||
|
|
num_of_1 = 0;
|
||
|
|
|
||
|
|
for (i = 0; i < 32; i++) {
|
||
|
|
if (rank_size & 0x1)
|
||
|
|
num_of_1++;
|
||
|
|
rank_size = rank_size >> 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (num_of_1 > 1)
|
||
|
|
return 6;
|
||
|
|
else
|
||
|
|
return 8;
|
||
|
|
}
|
||
|
|
|
||
|
|
void acquire_dram_setting(struct basic_dram_setting *pasrdpd)
|
||
|
|
{
|
||
|
|
unsigned int ch, rk;
|
||
|
|
|
||
|
|
pasrdpd->channel_nr = get_ch_num();
|
||
|
|
|
||
|
|
for (ch = 0; ch < MAX_CH; ch++) {
|
||
|
|
for (rk = 0; rk < MAX_RK; rk++) {
|
||
|
|
if ((ch >= pasrdpd->channel_nr) ||
|
||
|
|
(rk >= get_rk_num())) {
|
||
|
|
pasrdpd->channel[ch].rank[rk].valid_rank =
|
||
|
|
false;
|
||
|
|
pasrdpd->channel[ch].rank[rk].rank_size = 0;
|
||
|
|
pasrdpd->channel[ch].rank[rk].segment_nr = 0;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
pasrdpd->channel[ch].rank[rk].valid_rank = true;
|
||
|
|
pasrdpd->channel[ch].rank[rk].rank_size =
|
||
|
|
get_rank_size(rk) / (pasrdpd->channel_nr);
|
||
|
|
pasrdpd->channel[ch].rank[rk].segment_nr =
|
||
|
|
get_segment_nr(rk);
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|