mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-29 23:32:23 +00:00
f82954e98b
subrepo: subdir: "emummc" merged: "3791be9f" upstream: origin: "https://github.com/m4xw/emummc" branch: "exo2" commit: "3791be9f" git-subrepo: version: "0.4.1" origin: "???" commit: "???"
1285 lines
31 KiB
C
1285 lines
31 KiB
C
/*
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* Copyright (c) 2018 naehrwert
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* Copyright (c) 2018-2019 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include "mmc.h"
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#include "sdmmc.h"
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#include "../nx/cache.h"
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#include "../power/max7762x.h"
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#include "../soc/clock.h"
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#include "../soc/gpio.h"
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#include "../soc/pinmux.h"
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#include "../soc/pmc.h"
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#include "../soc/t210.h"
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#include "../utils/fatal.h"
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#include "../utils/types.h"
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#include "../utils/util.h"
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#define DPRINTF(...)
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/*! SCMMC controller base addresses. */
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static const u64 _sdmmc_bases[4] = {
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0x700B0000,
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0x700B0200,
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0x700B0400,
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0x700B0600,
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};
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int sdmmc_get_io_power(sdmmc_t *sdmmc)
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{
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u32 p = sdmmc->regs->pwrcon;
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if (!(p & SDHCI_POWER_ON))
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return SDMMC_POWER_OFF;
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if (p & SDHCI_POWER_180)
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return SDMMC_POWER_1_8;
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if (p & SDHCI_POWER_330)
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return SDMMC_POWER_3_3;
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return -1;
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}
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static int _sdmmc_set_io_power(sdmmc_t *sdmmc, u32 power)
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{
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switch (power)
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{
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case SDMMC_POWER_OFF:
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sdmmc->regs->pwrcon &= ~SDHCI_POWER_ON;
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break;
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case SDMMC_POWER_1_8:
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sdmmc->regs->pwrcon = SDHCI_POWER_180;
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break;
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case SDMMC_POWER_3_3:
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sdmmc->regs->pwrcon = SDHCI_POWER_330;
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break;
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default:
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return 0;
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}
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if (power != SDMMC_POWER_OFF)
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sdmmc->regs->pwrcon |= SDHCI_POWER_ON;
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return 1;
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}
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u32 sdmmc_get_bus_width(sdmmc_t *sdmmc)
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{
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u32 h = sdmmc->regs->hostctl;
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if (h & SDHCI_CTRL_8BITBUS)
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return SDMMC_BUS_WIDTH_8;
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if (h & SDHCI_CTRL_4BITBUS)
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return SDMMC_BUS_WIDTH_4;
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return SDMMC_BUS_WIDTH_1;
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}
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void sdmmc_set_bus_width(sdmmc_t *sdmmc, u32 bus_width)
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{
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u32 host_control = sdmmc->regs->hostctl & ~(SDHCI_CTRL_4BITBUS | SDHCI_CTRL_8BITBUS);
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if (bus_width == SDMMC_BUS_WIDTH_1)
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sdmmc->regs->hostctl = host_control;
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else if (bus_width == SDMMC_BUS_WIDTH_4)
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sdmmc->regs->hostctl = host_control | SDHCI_CTRL_4BITBUS;
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else if (bus_width == SDMMC_BUS_WIDTH_8)
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sdmmc->regs->hostctl = host_control | SDHCI_CTRL_8BITBUS;
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}
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void sdmmc_set_tap_value(sdmmc_t *sdmmc)
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{
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sdmmc->venclkctl_tap = sdmmc->regs->venclkctl >> 16;
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sdmmc->venclkctl_set = 1;
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}
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static int _sdmmc_config_tap_val(sdmmc_t *sdmmc, u32 type)
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{
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const u32 dqs_trim_val = 0x28;
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const u32 tap_values[] = { 4, 0, 3, 0 };
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u32 tap_val = 0;
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if (type == SDHCI_TIMING_MMC_HS400)
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sdmmc->regs->vencapover = (sdmmc->regs->vencapover & 0xFFFFC0FF) | (dqs_trim_val << 8);
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sdmmc->regs->ventunctl0 &= ~TEGRA_MMC_VNDR_TUN_CTRL0_TAP_VAL_UPDATED_BY_HW;
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if (type == SDHCI_TIMING_MMC_HS400)
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{
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if (!sdmmc->venclkctl_set)
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return 0;
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tap_val = sdmmc->venclkctl_tap;
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}
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else
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{
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tap_val = tap_values[sdmmc->id];
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}
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sdmmc->regs->venclkctl = (sdmmc->regs->venclkctl & 0xFF00FFFF) | (tap_val << 16);
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return 1;
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}
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static int _sdmmc_get_clkcon(sdmmc_t *sdmmc)
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{
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return sdmmc->regs->clkcon;
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}
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static void _sdmmc_pad_config_fallback(sdmmc_t *sdmmc, u32 power)
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{
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_sdmmc_get_clkcon(sdmmc);
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switch (sdmmc->id)
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{
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case SDMMC_1: // 33 Ohm 2X Driver.
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if (power == SDMMC_POWER_OFF)
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break;
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u32 sdmmc1_pad_cfg = APB_MISC(APB_MISC_GP_SDMMC1_PAD_CFGPADCTRL) & 0xF8080FFF;
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if (power == SDMMC_POWER_1_8)
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APB_MISC(APB_MISC_GP_SDMMC1_PAD_CFGPADCTRL) = sdmmc1_pad_cfg | (0xB0F << 12); // Up: 11, Dn: 15. For 33 ohm.
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else if (power == SDMMC_POWER_3_3)
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APB_MISC(APB_MISC_GP_SDMMC1_PAD_CFGPADCTRL) = sdmmc1_pad_cfg | (0xC0C << 12); // Up: 12, Dn: 12. For 33 ohm.
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break;
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case SDMMC_2:
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case SDMMC_4: // 50 Ohm 2X Driver. PU:16, PD:16.
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APB_MISC(APB_MISC_GP_EMMC4_PAD_CFGPADCTRL) = (APB_MISC(APB_MISC_GP_EMMC4_PAD_CFGPADCTRL) & 0xFFFFC003) | 0x1040;
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break;
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}
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}
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static void _sdmmc_autocal_execute(sdmmc_t *sdmmc, u32 power)
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{
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bool should_enable_sd_clock = false;
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if (sdmmc->regs->clkcon & SDHCI_CLOCK_CARD_EN)
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{
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should_enable_sd_clock = true;
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sdmmc->regs->clkcon &= ~SDHCI_CLOCK_CARD_EN;
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}
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// Enable E_INPUT power.
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if (!(sdmmc->regs->sdmemcmppadctl & TEGRA_MMC_SDMEMCOMPPADCTRL_PAD_E_INPUT_PWRD))
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{
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sdmmc->regs->sdmemcmppadctl |= TEGRA_MMC_SDMEMCOMPPADCTRL_PAD_E_INPUT_PWRD;
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_sdmmc_get_clkcon(sdmmc);
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usleep(1);
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}
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// Enable auto calibration and start auto configuration.
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sdmmc->regs->autocalcfg |= TEGRA_MMC_AUTOCALCFG_AUTO_CAL_ENABLE | TEGRA_MMC_AUTOCALCFG_AUTO_CAL_START;
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_sdmmc_get_clkcon(sdmmc);
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usleep(2);
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u64 timeout = get_tmr_ms() + 10;
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while (sdmmc->regs->autocalsts & TEGRA_MMC_AUTOCALSTS_AUTO_CAL_ACTIVE)
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{
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if (get_tmr_ms() > timeout)
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{
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timeout = 0; // Set timeout to 0 if we timed out.
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break;
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}
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}
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/*
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// Check if PU results are inside limits.
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// SDMMC1: CZ pads - 7-bit PU. SDMMC2/4: LV_CZ pads - 5-bit PU.
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u8 autocal_pu_status = sdmmc->regs->autocalsts & 0x7F;
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switch (sdmmc->id)
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{
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case SDMMC_1:
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if (!autocal_pu_status || autocal_pu_status == 0x7F)
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timeout = 0;
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break;
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case SDMMC_2:
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case SDMMC_4:
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autocal_pu_status &= 0x1F;
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if (!autocal_pu_status || autocal_pu_status == 0x1F)
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timeout = 0;
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break;
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}
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*/
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// In case auto calibration fails, we load suggested standard values.
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if (!timeout)
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{
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_sdmmc_pad_config_fallback(sdmmc, power);
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sdmmc->regs->autocalcfg &= ~TEGRA_MMC_AUTOCALCFG_AUTO_CAL_ENABLE;
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}
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// Disable E_INPUT to conserve power.
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sdmmc->regs->sdmemcmppadctl &= ~TEGRA_MMC_SDMEMCOMPPADCTRL_PAD_E_INPUT_PWRD;
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if(should_enable_sd_clock)
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sdmmc->regs->clkcon |= SDHCI_CLOCK_CARD_EN;
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}
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static int _sdmmc_dll_cal_execute(sdmmc_t *sdmmc)
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{
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int result = 1, should_disable_sd_clock = 0;
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if (!(sdmmc->regs->clkcon & SDHCI_CLOCK_CARD_EN))
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{
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should_disable_sd_clock = 1;
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sdmmc->regs->clkcon |= SDHCI_CLOCK_CARD_EN;
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}
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sdmmc->regs->vendllcalcfg |= TEGRA_MMC_DLLCAL_CFG_EN_CALIBRATE;
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_sdmmc_get_clkcon(sdmmc);
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u64 timeout = get_tmr_ms() + 5;
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while (sdmmc->regs->vendllcalcfg & TEGRA_MMC_DLLCAL_CFG_EN_CALIBRATE)
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{
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if (get_tmr_ms() > timeout)
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{
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result = 0;
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goto out;
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}
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}
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timeout = get_tmr_ms() + 10;
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while (sdmmc->regs->vendllcalcfgsts & TEGRA_MMC_DLLCAL_CFG_STATUS_DLL_ACTIVE)
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{
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if (get_tmr_ms() > timeout)
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{
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result = 0;
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goto out;
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}
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}
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out:;
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if (should_disable_sd_clock)
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sdmmc->regs->clkcon &= ~SDHCI_CLOCK_CARD_EN;
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return result;
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}
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static void _sdmmc_reset(sdmmc_t *sdmmc)
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{
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sdmmc->regs->swrst |= SDHCI_RESET_CMD | SDHCI_RESET_DATA;
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_sdmmc_get_clkcon(sdmmc);
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u64 timeout = get_tmr_ms() + 2000;
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while ((sdmmc->regs->swrst & (SDHCI_RESET_CMD | SDHCI_RESET_DATA)) && get_tmr_ms() < timeout)
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;
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}
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int sdmmc_setup_clock(sdmmc_t *sdmmc, u32 type)
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{
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// Disable the SD clock if it was enabled, and reenable it later.
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bool should_enable_sd_clock = false;
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if (sdmmc->regs->clkcon & SDHCI_CLOCK_CARD_EN)
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{
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should_enable_sd_clock = true;
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sdmmc->regs->clkcon &= ~SDHCI_CLOCK_CARD_EN;
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}
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_sdmmc_config_tap_val(sdmmc, type);
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_sdmmc_reset(sdmmc);
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switch (type)
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{
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case SDHCI_TIMING_MMC_ID:
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case SDHCI_TIMING_MMC_LS26:
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case SDHCI_TIMING_SD_ID:
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case SDHCI_TIMING_SD_DS12:
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sdmmc->regs->hostctl &= ~SDHCI_CTRL_HISPD;
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sdmmc->regs->hostctl2 &= ~SDHCI_CTRL_VDD_180;
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break;
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case SDHCI_TIMING_MMC_HS52:
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case SDHCI_TIMING_SD_HS25:
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sdmmc->regs->hostctl |= SDHCI_CTRL_HISPD;
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sdmmc->regs->hostctl2 &= ~SDHCI_CTRL_VDD_180;
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break;
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case SDHCI_TIMING_MMC_HS200:
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case SDHCI_TIMING_UHS_SDR50: // T210 Errata for SDR50, the host must be set to SDR104.
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case SDHCI_TIMING_UHS_SDR104:
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case SDHCI_TIMING_UHS_SDR82:
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case SDHCI_TIMING_UHS_DDR50:
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case SDHCI_TIMING_MMC_DDR52:
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sdmmc->regs->hostctl2 = (sdmmc->regs->hostctl2 & SDHCI_CTRL_UHS_MASK) | UHS_SDR104_BUS_SPEED;
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sdmmc->regs->hostctl2 |= SDHCI_CTRL_VDD_180;
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break;
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case SDHCI_TIMING_MMC_HS400:
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// Non standard.
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sdmmc->regs->hostctl2 = (sdmmc->regs->hostctl2 & SDHCI_CTRL_UHS_MASK) | HS400_BUS_SPEED;
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sdmmc->regs->hostctl2 |= SDHCI_CTRL_VDD_180;
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break;
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case SDHCI_TIMING_UHS_SDR25:
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sdmmc->regs->hostctl2 = (sdmmc->regs->hostctl2 & SDHCI_CTRL_UHS_MASK) | UHS_SDR25_BUS_SPEED;
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sdmmc->regs->hostctl2 |= SDHCI_CTRL_VDD_180;
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break;
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case SDHCI_TIMING_UHS_SDR12:
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sdmmc->regs->hostctl2 = (sdmmc->regs->hostctl2 & SDHCI_CTRL_UHS_MASK) | UHS_SDR12_BUS_SPEED;
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sdmmc->regs->hostctl2 |= SDHCI_CTRL_VDD_180;
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break;
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}
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_sdmmc_get_clkcon(sdmmc);
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u32 clock;
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u16 divisor;
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clock_sdmmc_get_card_clock_div(&clock, &divisor, type);
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clock_sdmmc_config_clock_source(&clock, sdmmc->id, clock);
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sdmmc->divisor = (clock + divisor - 1) / divisor;
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//if divisor != 1 && divisor << 31 -> error
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u16 div = divisor >> 1;
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divisor = 0;
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if (div > 0xFF)
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divisor = div >> SDHCI_DIVIDER_SHIFT;
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sdmmc->regs->clkcon = (sdmmc->regs->clkcon & ~(SDHCI_DIV_MASK | SDHCI_DIV_HI_MASK))
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| (div << SDHCI_DIVIDER_SHIFT) | (divisor << SDHCI_DIVIDER_HI_SHIFT);
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// Enable the SD clock again.
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if (should_enable_sd_clock)
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sdmmc->regs->clkcon |= SDHCI_CLOCK_CARD_EN;
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if (type == SDHCI_TIMING_MMC_HS400)
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return _sdmmc_dll_cal_execute(sdmmc);
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return 1;
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}
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static void _sdmmc_card_clock_enable(sdmmc_t *sdmmc)
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{
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// Recalibrate conditionally.
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if ((sdmmc->id == SDMMC_1) && !sdmmc->auto_cal_enabled)
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_sdmmc_autocal_execute(sdmmc, sdmmc_get_io_power(sdmmc));
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if (!sdmmc->auto_cal_enabled)
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{
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if (!(sdmmc->regs->clkcon & SDHCI_CLOCK_CARD_EN))
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sdmmc->regs->clkcon |= SDHCI_CLOCK_CARD_EN;
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}
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sdmmc->card_clock_enabled = 1;
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}
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static void _sdmmc_sd_clock_disable(sdmmc_t *sdmmc)
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{
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sdmmc->card_clock_enabled = 0;
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sdmmc->regs->clkcon &= ~SDHCI_CLOCK_CARD_EN;
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}
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void sdmmc_card_clock_ctrl(sdmmc_t *sdmmc, int auto_cal_enable)
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{
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// Recalibrate periodically for SDMMC1.
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if ((sdmmc->id == SDMMC_1) && !auto_cal_enable && sdmmc->card_clock_enabled)
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_sdmmc_autocal_execute(sdmmc, sdmmc_get_io_power(sdmmc));
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sdmmc->auto_cal_enabled = auto_cal_enable;
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if (auto_cal_enable)
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{
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if (!(sdmmc->regs->clkcon & SDHCI_CLOCK_CARD_EN))
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return;
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sdmmc->regs->clkcon &= ~SDHCI_CLOCK_CARD_EN;
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return;
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}
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|
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if (sdmmc->card_clock_enabled)
|
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if (!(sdmmc->regs->clkcon & SDHCI_CLOCK_CARD_EN))
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sdmmc->regs->clkcon |= SDHCI_CLOCK_CARD_EN;
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}
|
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|
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static int _sdmmc_cache_rsp(sdmmc_t *sdmmc, u32 *rsp, u32 size, u32 type)
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{
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switch (type)
|
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{
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case SDMMC_RSP_TYPE_1:
|
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case SDMMC_RSP_TYPE_3:
|
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case SDMMC_RSP_TYPE_4:
|
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case SDMMC_RSP_TYPE_5:
|
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if (size < 4)
|
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return 0;
|
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rsp[0] = sdmmc->regs->rspreg0;
|
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break;
|
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case SDMMC_RSP_TYPE_2:
|
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if (size < 0x10)
|
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return 0;
|
|
// CRC is stripped, so shifting is needed.
|
|
u32 tempreg;
|
|
for (int i = 0; i < 4; i++)
|
|
{
|
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switch(i)
|
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{
|
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case 0:
|
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tempreg = sdmmc->regs->rspreg3;
|
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break;
|
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case 1:
|
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tempreg = sdmmc->regs->rspreg2;
|
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break;
|
|
case 2:
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tempreg = sdmmc->regs->rspreg1;
|
|
break;
|
|
case 3:
|
|
tempreg = sdmmc->regs->rspreg0;
|
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break;
|
|
}
|
|
rsp[i] = tempreg << 8;
|
|
|
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if (i != 0)
|
|
rsp[i - 1] |= (tempreg >> 24) & 0xFF;
|
|
}
|
|
break;
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|
default:
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return 0;
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break;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
int sdmmc_get_rsp(sdmmc_t *sdmmc, u32 *rsp, u32 size, u32 type)
|
|
{
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if (!rsp || sdmmc->expected_rsp_type != type)
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return 0;
|
|
|
|
switch (type)
|
|
{
|
|
case SDMMC_RSP_TYPE_1:
|
|
case SDMMC_RSP_TYPE_3:
|
|
case SDMMC_RSP_TYPE_4:
|
|
case SDMMC_RSP_TYPE_5:
|
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if (size < 4)
|
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return 0;
|
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rsp[0] = sdmmc->rsp[0];
|
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break;
|
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case SDMMC_RSP_TYPE_2:
|
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if (size < 0x10)
|
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return 0;
|
|
rsp[0] = sdmmc->rsp[0];
|
|
rsp[1] = sdmmc->rsp[1];
|
|
rsp[2] = sdmmc->rsp[2];
|
|
rsp[3] = sdmmc->rsp[3];
|
|
break;
|
|
default:
|
|
return 0;
|
|
break;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _sdmmc_wait_cmd_data_inhibit(sdmmc_t *sdmmc, bool wait_dat)
|
|
{
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
|
|
u64 timeout = get_tmr_ms() + 2000;
|
|
while(sdmmc->regs->prnsts & SDHCI_CMD_INHIBIT)
|
|
if (get_tmr_ms() > timeout)
|
|
{
|
|
_sdmmc_reset(sdmmc);
|
|
return 0;
|
|
}
|
|
|
|
if (wait_dat)
|
|
{
|
|
timeout = get_tmr_ms() + 2000;
|
|
while (sdmmc->regs->prnsts & SDHCI_DATA_INHIBIT)
|
|
if (get_tmr_ms() > timeout)
|
|
{
|
|
_sdmmc_reset(sdmmc);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _sdmmc_wait_card_busy(sdmmc_t *sdmmc)
|
|
{
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
|
|
u64 timeout = get_tmr_ms() + 2000;
|
|
while (!(sdmmc->regs->prnsts & SDHCI_DATA_0_LVL_MASK))
|
|
if (get_tmr_ms() > timeout)
|
|
{
|
|
_sdmmc_reset(sdmmc);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _sdmmc_setup_read_small_block(sdmmc_t *sdmmc)
|
|
{
|
|
switch (sdmmc_get_bus_width(sdmmc))
|
|
{
|
|
case SDMMC_BUS_WIDTH_1:
|
|
return 0;
|
|
break;
|
|
case SDMMC_BUS_WIDTH_4:
|
|
sdmmc->regs->blksize = 64;
|
|
break;
|
|
case SDMMC_BUS_WIDTH_8:
|
|
sdmmc->regs->blksize = 128;
|
|
break;
|
|
}
|
|
sdmmc->regs->blkcnt = 1;
|
|
sdmmc->regs->trnmod = SDHCI_TRNS_READ;
|
|
return 1;
|
|
}
|
|
|
|
static int _sdmmc_send_cmd(sdmmc_t *sdmmc, sdmmc_cmd_t *cmd, bool is_data_present)
|
|
{
|
|
u16 cmdflags = 0;
|
|
|
|
switch (cmd->rsp_type)
|
|
{
|
|
case SDMMC_RSP_TYPE_0:
|
|
break;
|
|
case SDMMC_RSP_TYPE_1:
|
|
case SDMMC_RSP_TYPE_4:
|
|
case SDMMC_RSP_TYPE_5:
|
|
if (cmd->check_busy)
|
|
cmdflags = SDHCI_CMD_RESP_LEN48_BUSY | SDHCI_CMD_INDEX | SDHCI_CMD_CRC;
|
|
else
|
|
cmdflags = SDHCI_CMD_RESP_LEN48 | SDHCI_CMD_INDEX | SDHCI_CMD_CRC;
|
|
break;
|
|
case SDMMC_RSP_TYPE_2:
|
|
cmdflags = SDHCI_CMD_RESP_LEN136 | SDHCI_CMD_CRC;
|
|
break;
|
|
case SDMMC_RSP_TYPE_3:
|
|
cmdflags = SDHCI_CMD_RESP_LEN48;
|
|
break;
|
|
default:
|
|
return 0;
|
|
break;
|
|
}
|
|
|
|
if (is_data_present)
|
|
cmdflags |= SDHCI_CMD_DATA;
|
|
sdmmc->regs->argument = cmd->arg;
|
|
sdmmc->regs->cmdreg = (cmd->cmd << 8) | cmdflags;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void _sdmmc_send_tuning_cmd(sdmmc_t *sdmmc, u32 cmd)
|
|
{
|
|
sdmmc_cmd_t cmdbuf;
|
|
cmdbuf.cmd = cmd;
|
|
cmdbuf.arg = 0;
|
|
cmdbuf.rsp_type = SDMMC_RSP_TYPE_1;
|
|
cmdbuf.check_busy = 0;
|
|
_sdmmc_send_cmd(sdmmc, &cmdbuf, true);
|
|
}
|
|
|
|
static int _sdmmc_tuning_execute_once(sdmmc_t *sdmmc, u32 cmd)
|
|
{
|
|
if (sdmmc->auto_cal_enabled)
|
|
return 0;
|
|
if (!_sdmmc_wait_cmd_data_inhibit(sdmmc, true))
|
|
return 0;
|
|
|
|
_sdmmc_setup_read_small_block(sdmmc);
|
|
|
|
sdmmc->regs->norintstsen |= SDHCI_INT_DATA_AVAIL;
|
|
sdmmc->regs->norintsts = sdmmc->regs->norintsts;
|
|
sdmmc->regs->clkcon &= ~SDHCI_CLOCK_CARD_EN;
|
|
|
|
_sdmmc_send_tuning_cmd(sdmmc, cmd);
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
usleep(1);
|
|
|
|
_sdmmc_reset(sdmmc);
|
|
|
|
sdmmc->regs->clkcon |= SDHCI_CLOCK_CARD_EN;
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
|
|
u64 timeout = get_tmr_us() + 5000;
|
|
while (get_tmr_us() < timeout)
|
|
{
|
|
if (sdmmc->regs->norintsts & SDHCI_INT_DATA_AVAIL)
|
|
{
|
|
sdmmc->regs->norintsts = SDHCI_INT_DATA_AVAIL;
|
|
sdmmc->regs->norintstsen &= ~SDHCI_INT_DATA_AVAIL;
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
usleep((1000 * 8 + sdmmc->divisor - 1) / sdmmc->divisor);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
_sdmmc_reset(sdmmc);
|
|
|
|
sdmmc->regs->norintstsen &= ~SDHCI_INT_DATA_AVAIL;
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
usleep((1000 * 8 + sdmmc->divisor - 1) / sdmmc->divisor);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int sdmmc_tuning_execute(sdmmc_t *sdmmc, u32 type, u32 cmd)
|
|
{
|
|
u32 max = 0, flag = 0;
|
|
|
|
switch (type)
|
|
{
|
|
case SDHCI_TIMING_MMC_HS200:
|
|
case SDHCI_TIMING_MMC_HS400:
|
|
case SDHCI_TIMING_UHS_SDR104:
|
|
case SDHCI_TIMING_UHS_SDR82:
|
|
max = 128;
|
|
flag = (2 << 13); // 128 iterations.
|
|
break;
|
|
case SDHCI_TIMING_UHS_SDR50:
|
|
case SDHCI_TIMING_UHS_DDR50:
|
|
case SDHCI_TIMING_MMC_DDR52:
|
|
max = 256;
|
|
flag = (4 << 13); // 256 iterations.
|
|
break;
|
|
case SDHCI_TIMING_UHS_SDR12:
|
|
case SDHCI_TIMING_UHS_SDR25:
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
sdmmc->regs->ventunctl1 = 0; // step_size 1.
|
|
|
|
sdmmc->regs->ventunctl0 = (sdmmc->regs->ventunctl0 & 0xFFFF1FFF) | flag; // Tries.
|
|
sdmmc->regs->ventunctl0 = (sdmmc->regs->ventunctl0 & 0xFFFFE03F) | (1 << 6); // 1x Multiplier.
|
|
sdmmc->regs->ventunctl0 |= TEGRA_MMC_VNDR_TUN_CTRL0_TAP_VAL_UPDATED_BY_HW;
|
|
sdmmc->regs->hostctl2 |= SDHCI_CTRL_EXEC_TUNING;
|
|
|
|
for (u32 i = 0; i < max; i++)
|
|
{
|
|
_sdmmc_tuning_execute_once(sdmmc, cmd);
|
|
if (!(sdmmc->regs->hostctl2 & SDHCI_CTRL_EXEC_TUNING))
|
|
break;
|
|
}
|
|
|
|
if (sdmmc->regs->hostctl2 & SDHCI_CTRL_TUNED_CLK)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int _sdmmc_enable_internal_clock(sdmmc_t *sdmmc)
|
|
{
|
|
//Enable internal clock and wait till it is stable.
|
|
sdmmc->regs->clkcon |= SDHCI_CLOCK_INT_EN;
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
u64 timeout = get_tmr_ms() + 2000;
|
|
while (!(sdmmc->regs->clkcon & SDHCI_CLOCK_INT_STABLE))
|
|
{
|
|
if (get_tmr_ms() > timeout)
|
|
return 0;
|
|
}
|
|
|
|
sdmmc->regs->hostctl2 &= ~SDHCI_CTRL_PRESET_VAL_EN;
|
|
sdmmc->regs->clkcon &= ~SDHCI_PROG_CLOCK_MODE;
|
|
sdmmc->regs->hostctl2 |= SDHCI_HOST_VERSION_4_EN;
|
|
|
|
if (!(sdmmc->regs->capareg & SDHCI_CAN_64BIT))
|
|
return 0;
|
|
|
|
sdmmc->regs->hostctl2 |= SDHCI_ADDRESSING_64BIT_EN;
|
|
sdmmc->regs->hostctl &= ~SDHCI_CTRL_DMA_MASK;
|
|
sdmmc->regs->timeoutcon = (sdmmc->regs->timeoutcon & 0xF0) | 0xE;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _sdmmc_autocal_config_offset(sdmmc_t *sdmmc, u32 power)
|
|
{
|
|
u32 off_pd = 0;
|
|
u32 off_pu = 0;
|
|
|
|
switch (sdmmc->id)
|
|
{
|
|
case SDMMC_2:
|
|
case SDMMC_4:
|
|
if (power != SDMMC_POWER_1_8)
|
|
return 0;
|
|
off_pd = 5;
|
|
off_pu = 5;
|
|
break;
|
|
case SDMMC_1:
|
|
case SDMMC_3:
|
|
if (power == SDMMC_POWER_1_8)
|
|
{
|
|
off_pd = 123;
|
|
off_pu = 123;
|
|
}
|
|
else if (power == SDMMC_POWER_3_3)
|
|
{
|
|
off_pd = 125;
|
|
off_pu = 0;
|
|
}
|
|
else
|
|
return 0;
|
|
break;
|
|
}
|
|
|
|
sdmmc->regs->autocalcfg = (sdmmc->regs->autocalcfg & 0xFFFF8080) | (off_pd << 8) | off_pu;
|
|
return 1;
|
|
}
|
|
|
|
static void _sdmmc_enable_interrupts(sdmmc_t *sdmmc)
|
|
{
|
|
sdmmc->regs->norintstsen |= SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE;
|
|
sdmmc->regs->errintstsen |= SDHCI_ERR_INT_ALL_EXCEPT_ADMA_BUSPWR;
|
|
sdmmc->regs->norintsts = sdmmc->regs->norintsts;
|
|
sdmmc->regs->errintsts = sdmmc->regs->errintsts;
|
|
}
|
|
|
|
static void _sdmmc_mask_interrupts(sdmmc_t *sdmmc)
|
|
{
|
|
sdmmc->regs->errintstsen &= ~SDHCI_ERR_INT_ALL_EXCEPT_ADMA_BUSPWR;
|
|
sdmmc->regs->norintstsen &= ~(SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE);
|
|
}
|
|
|
|
static int _sdmmc_check_mask_interrupt(sdmmc_t *sdmmc, u16 *pout, u16 mask)
|
|
{
|
|
u16 norintsts = sdmmc->regs->norintsts;
|
|
u16 errintsts = sdmmc->regs->errintsts;
|
|
|
|
DPRINTF("norintsts %08X; errintsts %08X\n", norintsts, errintsts);
|
|
|
|
if (pout)
|
|
*pout = norintsts;
|
|
|
|
// Check for error interrupt.
|
|
if (norintsts & SDHCI_INT_ERROR)
|
|
{
|
|
sdmmc->regs->errintsts = errintsts;
|
|
return SDMMC_MASKINT_ERROR;
|
|
}
|
|
else if (norintsts & mask)
|
|
{
|
|
sdmmc->regs->norintsts = norintsts & mask;
|
|
return SDMMC_MASKINT_MASKED;
|
|
}
|
|
|
|
return SDMMC_MASKINT_NOERROR;
|
|
}
|
|
|
|
static int _sdmmc_wait_response(sdmmc_t *sdmmc)
|
|
{
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
|
|
u64 timeout = get_tmr_ms() + 2000;
|
|
while (true)
|
|
{
|
|
int result = _sdmmc_check_mask_interrupt(sdmmc, NULL, SDHCI_INT_RESPONSE);
|
|
if (result == SDMMC_MASKINT_MASKED)
|
|
break;
|
|
if (result != SDMMC_MASKINT_NOERROR || get_tmr_ms() > timeout)
|
|
{
|
|
_sdmmc_reset(sdmmc);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _sdmmc_stop_transmission_inner(sdmmc_t *sdmmc, u32 *rsp)
|
|
{
|
|
sdmmc_cmd_t cmd;
|
|
|
|
if (!_sdmmc_wait_cmd_data_inhibit(sdmmc, false))
|
|
return 0;
|
|
|
|
_sdmmc_enable_interrupts(sdmmc);
|
|
|
|
cmd.cmd = MMC_STOP_TRANSMISSION;
|
|
cmd.arg = 0;
|
|
cmd.rsp_type = SDMMC_RSP_TYPE_1;
|
|
cmd.check_busy = 1;
|
|
|
|
_sdmmc_send_cmd(sdmmc, &cmd, false);
|
|
|
|
int result = _sdmmc_wait_response(sdmmc);
|
|
_sdmmc_mask_interrupts(sdmmc);
|
|
|
|
if (!result)
|
|
return 0;
|
|
|
|
_sdmmc_cache_rsp(sdmmc, rsp, 4, SDMMC_RSP_TYPE_1);
|
|
|
|
return _sdmmc_wait_card_busy(sdmmc);
|
|
}
|
|
|
|
int sdmmc_stop_transmission(sdmmc_t *sdmmc, u32 *rsp)
|
|
{
|
|
if (!sdmmc->card_clock_enabled)
|
|
return 0;
|
|
|
|
// Recalibrate periodically for SDMMC1.
|
|
if ((sdmmc->id == SDMMC_1) && sdmmc->auto_cal_enabled)
|
|
_sdmmc_autocal_execute(sdmmc, sdmmc_get_io_power(sdmmc));
|
|
|
|
bool should_disable_sd_clock = false;
|
|
if (!(sdmmc->regs->clkcon & SDHCI_CLOCK_CARD_EN))
|
|
{
|
|
should_disable_sd_clock = true;
|
|
sdmmc->regs->clkcon |= SDHCI_CLOCK_CARD_EN;
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
usleep((8000 + sdmmc->divisor - 1) / sdmmc->divisor);
|
|
}
|
|
|
|
int result = _sdmmc_stop_transmission_inner(sdmmc, rsp);
|
|
usleep((8000 + sdmmc->divisor - 1) / sdmmc->divisor);
|
|
|
|
if (should_disable_sd_clock)
|
|
sdmmc->regs->clkcon &= ~SDHCI_CLOCK_CARD_EN;
|
|
|
|
return result;
|
|
}
|
|
|
|
static int _sdmmc_config_dma(sdmmc_t *sdmmc, u32 *blkcnt_out, sdmmc_req_t *req)
|
|
{
|
|
if (!req->blksize || !req->num_sectors)
|
|
return 0;
|
|
|
|
u32 blkcnt = req->num_sectors;
|
|
if (blkcnt >= 0xFFFF)
|
|
blkcnt = 0xFFFF;
|
|
|
|
u64 admaaddr = (u64)sdmmc_calculate_dma_addr(_current_accessor, req->buf, blkcnt);
|
|
if (!admaaddr)
|
|
{
|
|
// buf is on a heap
|
|
int dma_idx = sdmmc_calculate_fitting_dma_index(_current_accessor, blkcnt);
|
|
admaaddr = (u64)&_current_accessor->parent->dmaBuffers[dma_idx].device_addr_buffer_masked[0];
|
|
sdmmc->last_dma_idx = dma_idx;
|
|
}
|
|
|
|
// Check alignment.
|
|
if (admaaddr & 7)
|
|
return 0;
|
|
|
|
sdmmc->regs->admaaddr = admaaddr & 0xFFFFFFFFF;
|
|
sdmmc->regs->admaaddr_hi = (admaaddr >> 32) & 0xFFFFFFFFF;
|
|
|
|
sdmmc->dma_addr_next = (admaaddr + 0x80000) & 0xFFFFFFFFFFF80000;
|
|
|
|
sdmmc->regs->blksize = req->blksize | 0x7000;
|
|
sdmmc->regs->blkcnt = blkcnt;
|
|
|
|
if (blkcnt_out)
|
|
*blkcnt_out = blkcnt;
|
|
|
|
u32 trnmode = SDHCI_TRNS_DMA;
|
|
if (req->is_multi_block)
|
|
trnmode = SDHCI_TRNS_MULTI | SDHCI_TRNS_BLK_CNT_EN | SDHCI_TRNS_DMA;
|
|
if (!req->is_write)
|
|
trnmode |= SDHCI_TRNS_READ;
|
|
if (req->is_auto_cmd12)
|
|
trnmode = (trnmode & ~(SDHCI_TRNS_AUTO_CMD12 | SDHCI_TRNS_AUTO_CMD23)) | SDHCI_TRNS_AUTO_CMD12;
|
|
|
|
sdmmc->regs->trnmod = trnmode;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _sdmmc_update_dma(sdmmc_t *sdmmc)
|
|
{
|
|
u16 blkcnt = 0;
|
|
do
|
|
{
|
|
blkcnt = sdmmc->regs->blkcnt;
|
|
u64 timeout = get_tmr_ms() + 1500;
|
|
do
|
|
{
|
|
int result = 0;
|
|
while (true)
|
|
{
|
|
u16 intr = 0;
|
|
result = _sdmmc_check_mask_interrupt(sdmmc, &intr,
|
|
SDHCI_INT_DATA_END | SDHCI_INT_DMA_END);
|
|
if (result < 0)
|
|
break;
|
|
|
|
if (intr & SDHCI_INT_DATA_END)
|
|
return 1; // Transfer complete.
|
|
|
|
if (intr & SDHCI_INT_DMA_END)
|
|
{
|
|
// Update DMA.
|
|
sdmmc->regs->admaaddr = sdmmc->dma_addr_next & 0xFFFFFFFFF;
|
|
sdmmc->regs->admaaddr_hi = (sdmmc->dma_addr_next >> 32) & 0xFFFFFFFFF;
|
|
sdmmc->dma_addr_next += 0x80000;
|
|
}
|
|
}
|
|
if (result != SDMMC_MASKINT_NOERROR)
|
|
{
|
|
_sdmmc_reset(sdmmc);
|
|
return 0;
|
|
}
|
|
} while (get_tmr_ms() < timeout);
|
|
} while (sdmmc->regs->blkcnt != blkcnt);
|
|
|
|
_sdmmc_reset(sdmmc);
|
|
return 0;
|
|
}
|
|
|
|
static int _sdmmc_execute_cmd_inner(sdmmc_t *sdmmc, sdmmc_cmd_t *cmd, sdmmc_req_t *req, u32 *blkcnt_out)
|
|
{
|
|
int has_req_or_check_busy = req || cmd->check_busy;
|
|
if (!_sdmmc_wait_cmd_data_inhibit(sdmmc, has_req_or_check_busy))
|
|
return 0;
|
|
|
|
u32 blkcnt = 0;
|
|
bool is_data_present = false;
|
|
if (req)
|
|
{
|
|
if (!_sdmmc_config_dma(sdmmc, &blkcnt, req))
|
|
return 0;
|
|
|
|
if(!sdmmc_memcpy_buf)
|
|
{
|
|
// Flush from/to phys
|
|
armDCacheFlush(req->buf, req->blksize * blkcnt);
|
|
}
|
|
else
|
|
{
|
|
if(req->is_write)
|
|
{
|
|
void* dma_addr = &_current_accessor->parent->dmaBuffers[sdmmc->last_dma_idx].device_addr_buffer[0];
|
|
memcpy(dma_addr, req->buf, req->blksize * blkcnt);
|
|
|
|
// Flush to phys
|
|
armDCacheFlush(dma_addr, req->blksize * blkcnt);
|
|
}
|
|
}
|
|
|
|
is_data_present = true;
|
|
}
|
|
else
|
|
is_data_present = false;
|
|
|
|
_sdmmc_enable_interrupts(sdmmc);
|
|
|
|
if (!_sdmmc_send_cmd(sdmmc, cmd, is_data_present))
|
|
return 0;
|
|
|
|
int result = _sdmmc_wait_response(sdmmc);
|
|
DPRINTF("rsp(%d): %08X, %08X, %08X, %08X\n", result,
|
|
sdmmc->regs->rspreg0, sdmmc->regs->rspreg1, sdmmc->regs->rspreg2, sdmmc->regs->rspreg3);
|
|
if (result)
|
|
{
|
|
if (cmd->rsp_type)
|
|
{
|
|
sdmmc->expected_rsp_type = cmd->rsp_type;
|
|
result = _sdmmc_cache_rsp(sdmmc, sdmmc->rsp, 0x10, cmd->rsp_type);
|
|
|
|
/*if(sdmmc->rsp[0] & 0xFDF9A080)
|
|
{
|
|
res = 0;
|
|
sdmmc->rsp[0] = 0; // Reset error
|
|
}*/
|
|
}
|
|
|
|
if (req && result)
|
|
result = _sdmmc_update_dma(sdmmc);
|
|
}
|
|
|
|
_sdmmc_mask_interrupts(sdmmc);
|
|
|
|
if (result)
|
|
{
|
|
if (req)
|
|
{
|
|
if(!req->is_write)
|
|
{
|
|
if(!sdmmc_memcpy_buf)
|
|
{
|
|
// Flush from phys
|
|
armDCacheFlush(req->buf, req->blksize * blkcnt);
|
|
}
|
|
else
|
|
{
|
|
void* dma_addr = &_current_accessor->parent->dmaBuffers[sdmmc->last_dma_idx].device_addr_buffer[0];
|
|
// Flush from phys
|
|
armDCacheFlush(dma_addr, req->blksize * blkcnt);
|
|
// Copy to buffer
|
|
memcpy(req->buf, dma_addr, req->blksize * blkcnt);
|
|
}
|
|
}
|
|
|
|
if (blkcnt_out)
|
|
*blkcnt_out = blkcnt;
|
|
|
|
if (req->is_auto_cmd12)
|
|
sdmmc->rsp3 = sdmmc->regs->rspreg3;
|
|
}
|
|
|
|
if (cmd->check_busy || req)
|
|
return _sdmmc_wait_card_busy(sdmmc);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int sdmmc_get_sd_power_enabled()
|
|
{
|
|
return gpio_read(GPIO_PORT_E, GPIO_PIN_4);
|
|
}
|
|
|
|
bool sdmmc_get_sd_inserted()
|
|
{
|
|
return (!gpio_read(GPIO_PORT_Z, GPIO_PIN_1));
|
|
}
|
|
|
|
static int _sdmmc_config_sdmmc1()
|
|
{
|
|
// Configure SD card detect.
|
|
PINMUX_AUX(PINMUX_AUX_GPIO_PZ1) = PINMUX_INPUT_ENABLE | PINMUX_PULL_UP | 2; // GPIO control, pull up.
|
|
APB_MISC(APB_MISC_GP_VGPIO_GPIO_MUX_SEL) = 0;
|
|
gpio_config(GPIO_PORT_Z, GPIO_PIN_1, GPIO_MODE_GPIO);
|
|
gpio_output_enable(GPIO_PORT_Z, GPIO_PIN_1, GPIO_OUTPUT_DISABLE);
|
|
usleep(100);
|
|
|
|
// Check if SD card is inserted.
|
|
if(!sdmmc_get_sd_inserted())
|
|
return 0;
|
|
|
|
/*
|
|
* Pinmux config:
|
|
* DRV_TYPE = DRIVE_2X
|
|
* E_SCHMT = ENABLE (for 1.8V), DISABLE (for 3.3V)
|
|
* E_INPUT = ENABLE
|
|
* TRISTATE = PASSTHROUGH
|
|
* APB_MISC_GP_SDMMCx_CLK_LPBK_CONTROL = SDMMCx_CLK_PAD_E_LPBK for CLK
|
|
*/
|
|
|
|
// Configure SDMMC1 pinmux.
|
|
APB_MISC(APB_MISC_GP_SDMMC1_CLK_LPBK_CONTROL) = 1; // Enable deep loopback for SDMMC1 CLK pad.
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_CLK) = PINMUX_DRIVE_2X | PINMUX_INPUT_ENABLE | PINMUX_PARKED;
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_CMD) = PINMUX_DRIVE_2X | PINMUX_INPUT_ENABLE | PINMUX_PARKED | PINMUX_PULL_UP;
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_DAT3) = PINMUX_DRIVE_2X | PINMUX_INPUT_ENABLE | PINMUX_PARKED | PINMUX_PULL_UP;
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_DAT2) = PINMUX_DRIVE_2X | PINMUX_INPUT_ENABLE | PINMUX_PARKED | PINMUX_PULL_UP;
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_DAT1) = PINMUX_DRIVE_2X | PINMUX_INPUT_ENABLE | PINMUX_PARKED | PINMUX_PULL_UP;
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_DAT0) = PINMUX_DRIVE_2X | PINMUX_INPUT_ENABLE | PINMUX_PARKED | PINMUX_PULL_UP;
|
|
|
|
// Make sure the SDMMC1 controller is powered.
|
|
smcReadWriteRegister(PMC_BASE + APBDEV_PMC_NO_IOPOWER, PMC_NO_IOPOWER_SDMMC1_IO_EN, PMC_NO_IOPOWER_SDMMC1_IO_EN);
|
|
usleep(1000);
|
|
smcReadWriteRegister(PMC_BASE + APBDEV_PMC_NO_IOPOWER, ~PMC_NO_IOPOWER_SDMMC1_IO_EN, PMC_NO_IOPOWER_SDMMC1_IO_EN);
|
|
|
|
// Inform IO pads that voltage is gonna be 3.3V.
|
|
smcReadWriteRegister(PMC_BASE + APBDEV_PMC_PWR_DET_VAL, PMC_PWR_DET_SDMMC1_IO_EN, PMC_PWR_DET_SDMMC1_IO_EN);
|
|
|
|
// Set enable SD card power.
|
|
//PINMUX_AUX(PINMUX_AUX_DMIC3_CLK) = PINMUX_PULL_DOWN | 2; // Pull down.
|
|
PINMUX_AUX(PINMUX_AUX_DMIC3_CLK) = PINMUX_INPUT_ENABLE | PINMUX_PULL_DOWN | 1; // GPIO control, pull down.
|
|
gpio_config(GPIO_PORT_E, GPIO_PIN_4, GPIO_MODE_GPIO);
|
|
gpio_write(GPIO_PORT_E, GPIO_PIN_4, GPIO_HIGH);
|
|
gpio_output_enable(GPIO_PORT_E, GPIO_PIN_4, GPIO_OUTPUT_ENABLE);
|
|
usleep(1000);
|
|
|
|
// Enable SD card power.
|
|
max77620_regulator_set_voltage(REGULATOR_LDO2, 3300000);
|
|
max77620_regulator_enable(REGULATOR_LDO2, 1);
|
|
usleep(1000);
|
|
|
|
// Set pad slew codes to get good quality clock.
|
|
APB_MISC(APB_MISC_GP_SDMMC1_PAD_CFGPADCTRL) = (APB_MISC(APB_MISC_GP_SDMMC1_PAD_CFGPADCTRL) & 0xFFFFFFF) | 0x50000000;
|
|
usleep(1000);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void _sdmmc_config_emmc(u32 id)
|
|
{
|
|
switch (id)
|
|
{
|
|
case SDMMC_2:
|
|
// Unset park for pads.
|
|
APB_MISC(APB_MISC_GP_EMMC2_PAD_CFGPADCTRL) &= 0xF8003FFF;
|
|
break;
|
|
case SDMMC_4:
|
|
// Unset park for pads.
|
|
APB_MISC(APB_MISC_GP_EMMC4_PAD_CFGPADCTRL) &= 0xF8003FFF;
|
|
// Set default pad cfg.
|
|
APB_MISC(APB_MISC_GP_EMMC4_PAD_CFGPADCTRL) = (APB_MISC(APB_MISC_GP_EMMC4_PAD_CFGPADCTRL) & 0xFFFFC003) | 0x1040;
|
|
|
|
// Enabled schmitt trigger.
|
|
APB_MISC(APB_MISC_GP_EMMC4_PAD_CFGPADCTRL) |= 1; // Enable Schmitt trigger.
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
int sdmmc_init(sdmmc_t *sdmmc, u32 id, u32 power, u32 bus_width, u32 type, int auto_cal_enable)
|
|
{
|
|
const u32 trim_values[] = { 2, 8, 3, 8 };
|
|
|
|
if (id > SDMMC_4)
|
|
return 0;
|
|
|
|
memset(sdmmc, 0, sizeof(sdmmc_t));
|
|
|
|
sdmmc->regs = (t210_sdmmc_t *)QueryIoMapping(_sdmmc_bases[id], 0x200);
|
|
sdmmc->id = id;
|
|
sdmmc->clock_stopped = 1;
|
|
|
|
// Do specific SDMMC HW configuration.
|
|
switch (id)
|
|
{
|
|
case SDMMC_1:
|
|
if (!_sdmmc_config_sdmmc1())
|
|
return 0;
|
|
break;
|
|
case SDMMC_2:
|
|
case SDMMC_4:
|
|
_sdmmc_config_emmc(id);
|
|
break;
|
|
}
|
|
|
|
if (clock_sdmmc_is_not_reset_and_enabled(id))
|
|
{
|
|
_sdmmc_sd_clock_disable(sdmmc);
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
}
|
|
|
|
u32 clock;
|
|
u16 divisor;
|
|
clock_sdmmc_get_card_clock_div(&clock, &divisor, type);
|
|
clock_sdmmc_enable(id, clock);
|
|
|
|
sdmmc->clock_stopped = 0;
|
|
|
|
//TODO: make this skip-able.
|
|
sdmmc->regs->iospare |= 0x80000; // Enable muxing.
|
|
sdmmc->regs->veniotrimctl &= 0xFFFFFFFB; // Set Band Gap VREG to supply DLL.
|
|
sdmmc->regs->venclkctl = (sdmmc->regs->venclkctl & 0xE0FFFFFB) | (trim_values[sdmmc->id] << 24);
|
|
sdmmc->regs->sdmemcmppadctl =
|
|
(sdmmc->regs->sdmemcmppadctl & TEGRA_MMC_SDMEMCOMPPADCTRL_COMP_VREF_SEL_MASK) | 7;
|
|
|
|
if (!_sdmmc_autocal_config_offset(sdmmc, power))
|
|
return 0;
|
|
|
|
_sdmmc_autocal_execute(sdmmc, power);
|
|
|
|
if (_sdmmc_enable_internal_clock(sdmmc))
|
|
{
|
|
sdmmc_set_bus_width(sdmmc, bus_width);
|
|
_sdmmc_set_io_power(sdmmc, power);
|
|
|
|
if (sdmmc_setup_clock(sdmmc, type))
|
|
{
|
|
sdmmc_card_clock_ctrl(sdmmc, auto_cal_enable);
|
|
_sdmmc_card_clock_enable(sdmmc);
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void sdmmc_end(sdmmc_t *sdmmc)
|
|
{
|
|
if (!sdmmc->clock_stopped)
|
|
{
|
|
_sdmmc_sd_clock_disable(sdmmc);
|
|
// Disable SDMMC power.
|
|
_sdmmc_set_io_power(sdmmc, SDMMC_POWER_OFF);
|
|
|
|
// Disable SD card power.
|
|
if (sdmmc->id == SDMMC_1)
|
|
{
|
|
gpio_output_enable(GPIO_PORT_E, GPIO_PIN_4, GPIO_OUTPUT_DISABLE);
|
|
max77620_regulator_enable(REGULATOR_LDO2, 0);
|
|
|
|
// Inform IO pads that next voltage might be 3.3V.
|
|
smcReadWriteRegister(PMC_BASE + APBDEV_PMC_PWR_DET_VAL, PMC_PWR_DET_SDMMC1_IO_EN, PMC_PWR_DET_SDMMC1_IO_EN);
|
|
|
|
msleep(100); // To power cycle min 1ms without power is needed.
|
|
}
|
|
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
clock_sdmmc_disable(sdmmc->id);
|
|
sdmmc->clock_stopped = 1;
|
|
}
|
|
}
|
|
|
|
void sdmmc_init_cmd(sdmmc_cmd_t *cmdbuf, u16 cmd, u32 arg, u32 rsp_type, u32 check_busy)
|
|
{
|
|
cmdbuf->cmd = cmd;
|
|
cmdbuf->arg = arg;
|
|
cmdbuf->rsp_type = rsp_type;
|
|
cmdbuf->check_busy = check_busy;
|
|
}
|
|
|
|
int sdmmc_execute_cmd(sdmmc_t *sdmmc, sdmmc_cmd_t *cmd, sdmmc_req_t *req, u32 *blkcnt_out)
|
|
{
|
|
if (!sdmmc->card_clock_enabled)
|
|
return 0;
|
|
|
|
// Recalibrate periodically for SDMMC1.
|
|
if (sdmmc->id == SDMMC_1 && sdmmc->auto_cal_enabled)
|
|
_sdmmc_autocal_execute(sdmmc, sdmmc_get_io_power(sdmmc));
|
|
|
|
int should_disable_sd_clock = 0;
|
|
if (!(sdmmc->regs->clkcon & SDHCI_CLOCK_CARD_EN))
|
|
{
|
|
should_disable_sd_clock = 1;
|
|
sdmmc->regs->clkcon |= SDHCI_CLOCK_CARD_EN;
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
usleep((8000 + sdmmc->divisor - 1) / sdmmc->divisor);
|
|
}
|
|
|
|
int result = _sdmmc_execute_cmd_inner(sdmmc, cmd, req, blkcnt_out);
|
|
usleep((8000 + sdmmc->divisor - 1) / sdmmc->divisor);
|
|
|
|
if (should_disable_sd_clock)
|
|
sdmmc->regs->clkcon &= ~SDHCI_CLOCK_CARD_EN;
|
|
|
|
return result;
|
|
}
|
|
|
|
int sdmmc_enable_low_voltage(sdmmc_t *sdmmc)
|
|
{
|
|
if(sdmmc->id != SDMMC_1)
|
|
return 0;
|
|
|
|
if (!sdmmc_setup_clock(sdmmc, SDHCI_TIMING_UHS_SDR12))
|
|
return 0;
|
|
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
|
|
// Switch to 1.8V and wait for regulator to stabilize. Assume max possible wait needed.
|
|
max77620_regulator_set_voltage(REGULATOR_LDO2, 1800000);
|
|
usleep(300);
|
|
|
|
// Inform IO pads that we switched to 1.8V.
|
|
smcReadWriteRegister(PMC_BASE + APBDEV_PMC_PWR_DET_VAL, ~PMC_PWR_DET_SDMMC1_IO_EN, PMC_PWR_DET_SDMMC1_IO_EN);
|
|
|
|
// Enable schmitt trigger for better duty cycle and low jitter clock.
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_CLK) |= PINMUX_SCHMT;
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_CMD) |= PINMUX_SCHMT;
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_DAT3) |= PINMUX_SCHMT;
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_DAT2) |= PINMUX_SCHMT;
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_DAT1) |= PINMUX_SCHMT;
|
|
PINMUX_AUX(PINMUX_AUX_SDMMC1_DAT0) |= PINMUX_SCHMT;
|
|
|
|
_sdmmc_autocal_config_offset(sdmmc, SDMMC_POWER_1_8);
|
|
_sdmmc_autocal_execute(sdmmc, SDMMC_POWER_1_8);
|
|
_sdmmc_set_io_power(sdmmc, SDMMC_POWER_1_8);
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
msleep(5); // Wait minimum 5ms before turning on the card clock.
|
|
|
|
// Turn on SDCLK.
|
|
if (sdmmc->regs->hostctl2 & SDHCI_CTRL_VDD_180)
|
|
{
|
|
sdmmc->regs->clkcon |= SDHCI_CLOCK_CARD_EN;
|
|
_sdmmc_get_clkcon(sdmmc);
|
|
usleep(1000);
|
|
if ((sdmmc->regs->prnsts & 0xF00000) == 0xF00000)
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|