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1672 lines
46 KiB
C
1672 lines
46 KiB
C
/**
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* \file
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*
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* \brief Common SD/MMC stack
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*
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* Copyright (c) 2016-2018 Microchip Technology Inc. and its subsidiaries.
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*
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* \asf_license_start
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*
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* \page License
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*
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* Subject to your compliance with these terms, you may use Microchip
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* software and any derivatives exclusively with Microchip products.
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* It is your responsibility to comply with third party license terms applicable
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* to your use of third party software (including open source software) that
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* may accompany Microchip software.
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*
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* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
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* WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
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* INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
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* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
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* LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
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* LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
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* SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
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* POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
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* ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
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* RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
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* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
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*
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* \asf_license_stop
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*
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*/
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/*
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* Support and FAQ: visit <a href="https://www.microchip.com/support/">Microchip Support</a>
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*/
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#include <string.h>
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#include "conf_sd_mmc.h"
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#include "sd_mmc_protocol.h"
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#include "sd_mmc.h"
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#if CONF_OS_SUPPORT
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#include <hal_rtos.h>
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#endif
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#include <hal_gpio.h>
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#include <utils.h>
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#include <utils_assert.h>
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#include <utils_repeat_macro.h>
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#define TPASTE2(a, b) a##b
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#define ATPASTE2(a, b) TPASTE2(a, b)
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/**
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* \ingroup sd_mmc_stack
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* \defgroup sd_mmc_stack_internal Implementation of SD/MMC/SDIO Stack
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* @{
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*/
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#ifndef CONF_SD_MMC_MEM_CNT
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#define CONF_SD_MMC_MEM_CNT 0
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#endif
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/* Macros to switch SD MMC stack to the correct driver (MCI or SPI) */
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#if (CONF_SD_MMC_MEM_CNT != 0)
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#if CONF_MCI_OS_SUPPORT
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#include "hal_mci_os.h"
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#else
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#include "hal_mci_sync.h"
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#endif
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#define driver mci
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#else
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#error No MCI or HSMCI interfaces are defined for SD MMC stack. \
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CONF_SD_MMC_MEM_CNT must be added in board.h file.
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#endif
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#if CONF_MCI_OS_SUPPORT
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#define driver_select_device ATPASTE2(driver, _os_select_device)
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#define driver_deselect_device ATPASTE2(driver, _os_deselect_device)
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#define driver_get_bus_width ATPASTE2(driver, _os_get_bus_width)
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#define driver_is_high_speed_capable ATPASTE2(driver, _os_is_high_speed_capable)
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#define driver_send_clock ATPASTE2(driver, _os_send_init_sequence)
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#define driver_send_cmd ATPASTE2(driver, _os_send_cmd)
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#define driver_get_response ATPASTE2(driver, _os_get_response)
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#define driver_get_response_128 ATPASTE2(driver, _os_get_response_128)
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#define driver_adtc_start ATPASTE2(driver, _os_adtc_start)
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#define driver_adtc_stop ATPASTE2(driver, _os_send_cmd)
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#define driver_read_word ATPASTE2(driver, _os_read_bytes)
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#define driver_write_word ATPASTE2(driver, _os_write_bytes)
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#define driver_start_read_blocks ATPASTE2(driver, _os_start_read_blocks)
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#define driver_wait_end_of_read_blocks ATPASTE2(driver, _os_wait_end_of_read_blocks)
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#define driver_start_write_blocks ATPASTE2(driver, _os_start_write_blocks)
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#define driver_wait_end_of_write_blocks ATPASTE2(driver, _os_wait_end_of_write_blocks)
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#else
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#define driver_select_device ATPASTE2(driver, _sync_select_device)
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#define driver_deselect_device ATPASTE2(driver, _sync_deselect_device)
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#define driver_get_bus_width ATPASTE2(driver, _sync_get_bus_width)
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#define driver_is_high_speed_capable ATPASTE2(driver, _sync_is_high_speed_capable)
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#define driver_send_clock ATPASTE2(driver, _sync_send_clock)
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#define driver_send_cmd ATPASTE2(driver, _sync_send_cmd)
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#define driver_get_response ATPASTE2(driver, _sync_get_response)
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#define driver_get_response_128 ATPASTE2(driver, _sync_get_response_128)
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#define driver_adtc_start ATPASTE2(driver, _sync_adtc_start)
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#define driver_adtc_stop ATPASTE2(driver, _sync_send_cmd)
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#define driver_read_word ATPASTE2(driver, _sync_read_word)
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#define driver_write_word ATPASTE2(driver, _sync_write_word)
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#define driver_start_read_blocks ATPASTE2(driver, _sync_start_read_blocks)
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#define driver_wait_end_of_read_blocks ATPASTE2(driver, _sync_wait_end_of_read_blocks)
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#define driver_start_write_blocks ATPASTE2(driver, _sync_start_write_blocks)
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#define driver_wait_end_of_write_blocks ATPASTE2(driver, _sync_wait_end_of_write_blocks)
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#endif
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#if (CONF_SDIO_SUPPORT == 1)
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#define IS_SDIO() (sd_mmc_card->type & CARD_TYPE_SDIO)
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#else
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#define IS_SDIO() false
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#endif
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/** This SD MMC stack supports only the high voltage */
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#define SD_MMC_VOLTAGE_SUPPORT \
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(OCR_VDD_27_28 | OCR_VDD_28_29 | OCR_VDD_29_30 | OCR_VDD_30_31 | OCR_VDD_31_32 | OCR_VDD_32_33)
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/** SD/MMC card states */
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enum card_state {
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SD_MMC_CARD_STATE_READY = 0, /**< Ready to use */
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SD_MMC_CARD_STATE_DEBOUNCE = 1, /**< Debounce on going */
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SD_MMC_CARD_STATE_INIT = 2, /**< Initialization on going */
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SD_MMC_CARD_STATE_UNUSABLE = 3, /**< Unusable card */
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SD_MMC_CARD_STATE_NO_CARD = 4 /**< No SD/MMC card inserted */
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};
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/** SD/MMC card information structure */
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struct sd_mmc_card {
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uint32_t clock; /**< Card access clock */
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uint32_t capacity; /**< Card capacity in KBytes */
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uint16_t rca; /**< Relative card address */
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enum card_state state; /**< Card state */
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card_type_t type; /**< Card type */
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card_version_t version; /**< Card version */
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uint8_t bus_width; /**< Number of DATA lin on bus (MCI only) */
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uint8_t csd[CSD_REG_BSIZE]; /**< CSD register */
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uint8_t high_speed; /**< High speed card (1) */
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};
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/** Card detect pin */
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static sd_mmc_detect_t *_cd;
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/** Write protect pin */
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static sd_mmc_detect_t *_wp;
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/** SD/MMC card list */
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/** Note: Initialize card detect pin fields if present */
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static struct sd_mmc_card sd_mmc_cards[CONF_SD_MMC_MEM_CNT];
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/** HAL driver instance */
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static void *sd_mmc_hal;
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/** Index of current slot configurated */
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static uint8_t sd_mmc_slot_sel;
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/** Pointer on current slot configurated */
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static struct sd_mmc_card *sd_mmc_card;
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/** Number of block to read or write on the current transfer */
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static uint16_t sd_mmc_nb_block_to_tranfer = 0;
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/** Number of block remaining to read or write on the current transfer */
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static uint16_t sd_mmc_nb_block_remaining = 0;
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/** SD/MMC transfer rate unit codes (10K) list */
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const uint32_t sd_mmc_trans_units[7] = {10, 100, 1000, 10000, 0, 0, 0};
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/** SD transfer multiplier factor codes (1/10) list */
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const uint32_t sd_trans_multipliers[16] = {0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80};
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/** MMC transfer multiplier factor codes (1/10) list */
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const uint32_t mmc_trans_multipliers[16] = {0, 10, 12, 13, 15, 20, 26, 30, 35, 40, 45, 52, 55, 60, 70, 80};
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/** \name MMC, SD and SDIO commands process */
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/** @{ */
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#if CONF_MMC_SUPPORT
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static bool mmc_mci_op_cond(void);
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static bool mmc_cmd6_set_bus_width(uint8_t bus_width);
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static bool mmc_cmd6_set_high_speed(void);
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static bool mmc_cmd8(uint8_t *b_authorize_high_speed);
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static void mmc_decode_csd(void);
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#endif
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static bool sd_mci_op_cond(uint8_t v2);
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static bool sdio_op_cond(void);
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static bool sdio_get_max_speed(void);
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static bool sdio_cmd52_set_bus_width(void);
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static bool sdio_cmd52_set_high_speed(void);
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static bool sd_cm6_set_high_speed(void);
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static bool sd_cmd8(uint8_t *v2);
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static bool sd_mmc_cmd9_mci(void);
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static void sd_decode_csd(void);
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static bool sd_mmc_cmd13(void);
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#if (CONF_SDIO_SUPPORT == 1)
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static bool sdio_cmd52(uint8_t rw_flag, uint8_t func_nb, uint32_t reg_addr, uint8_t rd_after_wr, uint8_t *io_data);
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static bool sdio_cmd53(uint8_t rw_flag, uint8_t func_nb, uint32_t reg_addr, uint8_t inc_addr, uint32_t size,
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bool access_block);
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#endif
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static bool sd_acmd6(void);
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static bool sd_acmd51(void);
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/** @} */
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/** \name Internal function to process the initialization and install */
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/** @{ */
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static sd_mmc_err_t sd_mmc_select_slot(uint8_t slot);
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static void sd_mmc_configure_slot(void);
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static void sd_mmc_deselect_slot(void);
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static bool sd_mmc_mci_card_init(void);
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#if CONF_MMC_SUPPORT
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static bool sd_mmc_mci_install_mmc(void);
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#endif
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/** @} */
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/** \name Internal functions to manage a large timeout after a card insertion */
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/** @{ */
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#if CONF_OS_SUPPORT
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#define SD_MMC_START_TIMEOUT() os_sleep(CONF_SD_MMC_DEBOUNCE)
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#else
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#define SD_MMC_START_TIMEOUT()
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#endif
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#define SD_MMC_IS_TIMEOUT() true
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#define SD_MMC_STOP_TIMEOUT()
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/** @} */
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#if CONF_MMC_SUPPORT
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/**
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* \brief Sends operation condition command and read OCR (MCI only)
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* - CMD1 sends operation condition command
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* - CMD1 reads OCR
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*
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* \return true if success, otherwise false
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*/
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static bool mmc_mci_op_cond(void)
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{
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uint32_t retry, resp;
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/*
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* Timeout 1s = 400KHz / ((6+6)*8) cylces = 4200 retry
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* 6 = cmd byte size
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* 6 = response byte size
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*/
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retry = 4200;
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do {
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if (!driver_send_cmd(sd_mmc_hal, MMC_MCI_CMD1_SEND_OP_COND, SD_MMC_VOLTAGE_SUPPORT | OCR_ACCESS_MODE_SECTOR)) {
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return false;
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}
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/* Check busy flag */
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resp = driver_get_response(sd_mmc_hal);
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if (resp & OCR_POWER_UP_BUSY) {
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/* Check OCR value */
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if ((resp & OCR_ACCESS_MODE_MASK) == OCR_ACCESS_MODE_SECTOR) {
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sd_mmc_card->type |= CARD_TYPE_HC;
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}
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break;
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}
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if (retry-- == 0) {
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return false;
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}
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} while (1);
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return true;
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}
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#endif
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/**
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* \brief Ask to all cards to send their operations conditions (MCI only).
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* - ACMD41 sends operation condition command.
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* - ACMD41 reads OCR
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*
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* \param v2 Shall be 1 if it is a SD card V2
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*
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* \return true if success, otherwise false
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*/
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static bool sd_mci_op_cond(uint8_t v2)
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{
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uint32_t arg, retry, resp;
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/*
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* Timeout 1s = 400KHz / ((6+6+6+6)*8) cylces = 2100 retry
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* 6 = cmd byte size
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* 6 = response byte size
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* 6 = cmd byte size
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* 6 = response byte size
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*/
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retry = 2100;
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do {
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/* CMD55 - Indicate to the card that the next command is an
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* application specific command rather than a standard command.*/
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if (!driver_send_cmd(sd_mmc_hal, SDMMC_CMD55_APP_CMD, 0)) {
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return false;
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}
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/* (ACMD41) Sends host OCR register */
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arg = SD_MMC_VOLTAGE_SUPPORT;
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if (v2) {
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arg |= SD_ACMD41_HCS;
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}
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/* Check response */
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if (!driver_send_cmd(sd_mmc_hal, SD_MCI_ACMD41_SD_SEND_OP_COND, arg)) {
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return false;
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}
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resp = driver_get_response(sd_mmc_hal);
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if (resp & OCR_POWER_UP_BUSY) {
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/* Card is ready */
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if ((resp & OCR_CCS) != 0) {
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sd_mmc_card->type |= CARD_TYPE_HC;
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}
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break;
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}
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if (retry-- == 0) {
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return false;
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}
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} while (1);
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return true;
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}
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#if (CONF_SDIO_SUPPORT == 1)
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/**
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* \brief Try to get the SDIO card's operating condition
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* - CMD5 to read OCR NF field
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* - CMD5 to wait OCR power up busy
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* - CMD5 to read OCR MP field
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* sd_mmc_card->type is updated
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*
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* \return true if success, otherwise false
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*/
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static bool sdio_op_cond(void)
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{
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uint32_t resp;
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/* CMD5 - SDIO send operation condition (OCR) command. */
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if (!driver_send_cmd(sd_mmc_hal, SDIO_CMD5_SEND_OP_COND, 0)) {
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return true; /* No error but card type not updated */
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}
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resp = driver_get_response(sd_mmc_hal);
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if ((resp & OCR_SDIO_NF) == 0) {
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return true; /* No error but card type not updated */
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}
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/*
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* Wait card ready
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* Timeout 1s = 400KHz / ((6+4)*8) cylces = 5000 retry
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* 6 = cmd byte size
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* 4(SPI) 6(MCI) = response byte size
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*/
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uint32_t cmd5_retry = 5000;
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while (1) {
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/* CMD5 - SDIO send operation condition (OCR) command.*/
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if (!driver_send_cmd(sd_mmc_hal, SDIO_CMD5_SEND_OP_COND, resp & SD_MMC_VOLTAGE_SUPPORT)) {
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return false;
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}
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resp = driver_get_response(sd_mmc_hal);
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if ((resp & OCR_POWER_UP_BUSY) == OCR_POWER_UP_BUSY) {
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break;
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}
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if (cmd5_retry-- == 0) {
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return false;
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}
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}
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/* Update card type at the end of busy */
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if ((resp & OCR_SDIO_MP) > 0) {
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sd_mmc_card->type = CARD_TYPE_SD_COMBO;
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} else {
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sd_mmc_card->type = CARD_TYPE_SDIO;
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}
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return true; /* No error and card type updated with SDIO type */
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}
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/**
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* \brief Get SDIO max transfer speed in Hz.
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* - CMD53 reads CIS area address in CCCR area.
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* - Nx CMD53 search Fun0 tuple in CIS area
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* - CMD53 reads TPLFE_MAX_TRAN_SPEED in Fun0 tuple
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* - Compute maximum speed of SDIO
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* and update sd_mmc_card->clock
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*
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* \return true if success, otherwise false
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*/
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static bool sdio_get_max_speed(void)
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{
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uint32_t addr_new, addr_old;
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uint8_t buf[6];
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uint32_t unit;
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uint32_t mul;
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uint8_t tplfe_max_tran_speed, i;
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uint8_t addr_cis[4];
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/* Read CIS area address in CCCR area */
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addr_old = SDIO_CCCR_CIS_PTR;
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for (i = 0; i < 4; i++) {
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sdio_cmd52(SDIO_CMD52_READ_FLAG, SDIO_CIA, addr_old, 0, &addr_cis[i]);
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addr_old++;
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}
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addr_old = addr_cis[0] + (addr_cis[1] << 8) + (addr_cis[2] << 16) + (addr_cis[3] << 24);
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addr_new = addr_old;
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while (1) {
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/* Read a sample of CIA area */
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for (i = 0; i < 3; i++) {
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sdio_cmd52(SDIO_CMD52_READ_FLAG, SDIO_CIA, addr_new, 0, &buf[i]);
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addr_new++;
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}
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if (buf[0] == SDIO_CISTPL_END) {
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return false; /* Tuple error */
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}
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if (buf[0] == SDIO_CISTPL_FUNCE && buf[2] == 0x00) {
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break; /* Fun0 tuple found */
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}
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if (buf[1] == 0) {
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return false; /* Tuple error */
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}
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/* Next address */
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addr_new += buf[1] - 1;
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if (addr_new > (addr_old + 256)) {
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return false; /* Outoff CIS area */
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}
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}
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/* Read all Fun0 tuple fields: fn0_blk_siz & max_tran_speed */
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addr_new -= 3;
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for (i = 0; i < 6; i++) {
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sdio_cmd52(SDIO_CMD52_READ_FLAG, SDIO_CIA, addr_new, 0, &buf[i]);
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addr_new++;
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}
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tplfe_max_tran_speed = buf[5];
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if (tplfe_max_tran_speed > 0x32) {
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/* Error on SDIO register, the high speed is not activated
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* and the clock can not be more than 25MHz.
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* This error is present on specific SDIO card
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* (H&D wireless card - HDG104 WiFi SIP).
|
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*/
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tplfe_max_tran_speed = 0x32; /* 25Mhz */
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}
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/* Decode transfer speed in Hz.*/
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unit = sd_mmc_trans_units[tplfe_max_tran_speed & 0x7];
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mul = sd_trans_multipliers[(tplfe_max_tran_speed >> 3) & 0xF];
|
|
sd_mmc_card->clock = unit * mul * 1000;
|
|
/**
|
|
* Note: A combo card shall be a Full-Speed SDIO card
|
|
* which supports upto 25MHz.
|
|
* A SDIO card alone can be:
|
|
* - a Low-Speed SDIO card which supports 400Khz minimum
|
|
* - a Full-Speed SDIO card which supports upto 25MHz
|
|
*/
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* \brief CMD52 for SDIO - Switches the bus width mode to 4
|
|
*
|
|
* \note sd_mmc_card->bus_width is updated.
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool sdio_cmd52_set_bus_width(void)
|
|
{
|
|
/**
|
|
* A SD memory card always supports bus 4bit
|
|
* A SD COMBO card always supports bus 4bit
|
|
* A SDIO Full-Speed alone always supports 4bit
|
|
* A SDIO Low-Speed alone can supports 4bit (Optional)
|
|
*/
|
|
uint8_t u8_value;
|
|
|
|
/* Check 4bit support in 4BLS of "Card Capability" register */
|
|
if (!sdio_cmd52(SDIO_CMD52_READ_FLAG, SDIO_CIA, SDIO_CCCR_CAP, 0, &u8_value)) {
|
|
return false;
|
|
}
|
|
if ((u8_value & SDIO_CAP_4BLS) != SDIO_CAP_4BLS) {
|
|
/* No supported, it is not a protocol error */
|
|
return true;
|
|
}
|
|
/* HS mode possible, then enable */
|
|
u8_value = SDIO_BUSWIDTH_4B;
|
|
if (!sdio_cmd52(SDIO_CMD52_WRITE_FLAG, SDIO_CIA, SDIO_CCCR_BUS_CTRL, 1, &u8_value)) {
|
|
return false;
|
|
}
|
|
sd_mmc_card->bus_width = 4;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* \brief CMD52 for SDIO - Enable the high speed mode
|
|
*
|
|
* \note sd_mmc_card->high_speed is updated.
|
|
* \note sd_mmc_card->clock is updated.
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool sdio_cmd52_set_high_speed(void)
|
|
{
|
|
uint8_t u8_value;
|
|
|
|
/* Check CIA.HS */
|
|
if (!sdio_cmd52(SDIO_CMD52_READ_FLAG, SDIO_CIA, SDIO_CCCR_HS, 0, &u8_value)) {
|
|
return false;
|
|
}
|
|
if ((u8_value & SDIO_SHS) != SDIO_SHS) {
|
|
/* No supported, it is not a protocol error */
|
|
return true;
|
|
}
|
|
/* HS mode possible, then enable */
|
|
u8_value = SDIO_EHS;
|
|
if (!sdio_cmd52(SDIO_CMD52_WRITE_FLAG, SDIO_CIA, SDIO_CCCR_HS, 1, &u8_value)) {
|
|
return false;
|
|
}
|
|
sd_mmc_card->high_speed = 1;
|
|
sd_mmc_card->clock *= 2;
|
|
return true;
|
|
}
|
|
|
|
#else
|
|
static bool sdio_op_cond(void)
|
|
{
|
|
return true; /* No error but card type not updated */
|
|
}
|
|
static bool sdio_get_max_speed(void)
|
|
{
|
|
return false;
|
|
}
|
|
static bool sdio_cmd52_set_bus_width(void)
|
|
{
|
|
return false;
|
|
}
|
|
static bool sdio_cmd52_set_high_speed(void)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* \brief CMD6 for SD - Switch card in high speed mode
|
|
*
|
|
* \note CMD6 for SD is valid under the "trans" state.
|
|
* \note sd_mmc_card->high_speed is updated.
|
|
* \note sd_mmc_card->clock is updated.
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool sd_cm6_set_high_speed(void)
|
|
{
|
|
uint8_t switch_status[SD_SW_STATUS_BSIZE] = {0};
|
|
|
|
if (!driver_adtc_start(sd_mmc_hal,
|
|
SD_CMD6_SWITCH_FUNC,
|
|
SD_CMD6_MODE_SWITCH | SD_CMD6_GRP6_NO_INFLUENCE | SD_CMD6_GRP5_NO_INFLUENCE
|
|
| SD_CMD6_GRP4_NO_INFLUENCE | SD_CMD6_GRP3_NO_INFLUENCE | SD_CMD6_GRP2_DEFAULT
|
|
| SD_CMD6_GRP1_HIGH_SPEED,
|
|
SD_SW_STATUS_BSIZE,
|
|
1,
|
|
true)) {
|
|
return false;
|
|
}
|
|
if (!driver_start_read_blocks(sd_mmc_hal, switch_status, 1)) {
|
|
return false;
|
|
}
|
|
if (!driver_wait_end_of_read_blocks(sd_mmc_hal)) {
|
|
return false;
|
|
}
|
|
|
|
if (driver_get_response(sd_mmc_hal) & CARD_STATUS_SWITCH_ERROR) {
|
|
return false;
|
|
}
|
|
if (SD_SW_STATUS_FUN_GRP1_RC(switch_status) == SD_SW_STATUS_FUN_GRP_RC_ERROR) {
|
|
/* No supported, it is not a protocol error */
|
|
return true;
|
|
}
|
|
if (SD_SW_STATUS_FUN_GRP1_BUSY(switch_status)) {
|
|
return false;
|
|
}
|
|
/* CMD6 function switching period is within 8 clocks
|
|
* after the end bit of status data.*/
|
|
driver_send_clock(sd_mmc_hal);
|
|
sd_mmc_card->high_speed = 1;
|
|
sd_mmc_card->clock *= 2;
|
|
return true;
|
|
}
|
|
|
|
#if CONF_MMC_SUPPORT
|
|
|
|
/**
|
|
* \brief CMD6 for MMC - Switches the bus width mode
|
|
*
|
|
* \note CMD6 is valid under the "trans" state.
|
|
* \note sd_mmc_card->bus_width is updated.
|
|
*
|
|
* \param bus_width Bus width to set
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool mmc_cmd6_set_bus_width(uint8_t bus_width)
|
|
{
|
|
uint32_t arg;
|
|
|
|
switch (bus_width) {
|
|
case 8:
|
|
arg = MMC_CMD6_ACCESS_SET_BITS | MMC_CMD6_INDEX_BUS_WIDTH | MMC_CMD6_VALUE_BUS_WIDTH_8BIT;
|
|
break;
|
|
case 4:
|
|
arg = MMC_CMD6_ACCESS_SET_BITS | MMC_CMD6_INDEX_BUS_WIDTH | MMC_CMD6_VALUE_BUS_WIDTH_4BIT;
|
|
break;
|
|
default:
|
|
arg = MMC_CMD6_ACCESS_SET_BITS | MMC_CMD6_INDEX_BUS_WIDTH | MMC_CMD6_VALUE_BUS_WIDTH_1BIT;
|
|
break;
|
|
}
|
|
if (!driver_send_cmd(sd_mmc_hal, MMC_CMD6_SWITCH, arg)) {
|
|
return false;
|
|
}
|
|
if (driver_get_response(sd_mmc_hal) & CARD_STATUS_SWITCH_ERROR) {
|
|
/* No supported, it is not a protocol error */
|
|
return false;
|
|
}
|
|
sd_mmc_card->bus_width = bus_width;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* \brief CMD6 for MMC - Switches in high speed mode
|
|
*
|
|
* \note CMD6 is valid under the "trans" state.
|
|
* \note sd_mmc_card->high_speed is updated.
|
|
* \note sd_mmc_card->clock is updated.
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool mmc_cmd6_set_high_speed(void)
|
|
{
|
|
if (!driver_send_cmd(sd_mmc_hal,
|
|
MMC_CMD6_SWITCH,
|
|
MMC_CMD6_ACCESS_WRITE_BYTE | MMC_CMD6_INDEX_HS_TIMING | MMC_CMD6_VALUE_HS_TIMING_ENABLE)) {
|
|
return false;
|
|
}
|
|
if (driver_get_response(sd_mmc_hal) & CARD_STATUS_SWITCH_ERROR) {
|
|
/* No supported, it is not a protocol error */
|
|
return false;
|
|
}
|
|
sd_mmc_card->high_speed = 1;
|
|
sd_mmc_card->clock = 52000000lu;
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* \brief CMD8 for SD card - Send Interface Condition Command.
|
|
*
|
|
* \note
|
|
* Send SD Memory Card interface condition, which includes host supply
|
|
* voltage information and asks the card whether card supports voltage.
|
|
* Should be performed at initialization time to detect the card type.
|
|
*
|
|
* \param v2 Pointer to v2 flag to update
|
|
*
|
|
* \return true if success, otherwise false
|
|
* with a update of \ref sd_mmc_err.
|
|
*/
|
|
static bool sd_cmd8(uint8_t *v2)
|
|
{
|
|
uint32_t resp;
|
|
|
|
*v2 = 0;
|
|
/* Test for SD version 2 */
|
|
if (!driver_send_cmd(sd_mmc_hal, SD_CMD8_SEND_IF_COND, SD_CMD8_PATTERN | SD_CMD8_HIGH_VOLTAGE)) {
|
|
return true; /* It is not a V2 */
|
|
}
|
|
/* Check R7 response */
|
|
resp = driver_get_response(sd_mmc_hal);
|
|
if (resp == 0xFFFFFFFF) {
|
|
/* No compliance R7 value */
|
|
return true; /* It is not a V2 */
|
|
}
|
|
if ((resp & (SD_CMD8_MASK_PATTERN | SD_CMD8_MASK_VOLTAGE)) != (SD_CMD8_PATTERN | SD_CMD8_HIGH_VOLTAGE)) {
|
|
return false;
|
|
}
|
|
*v2 = 1;
|
|
return true;
|
|
}
|
|
|
|
#if CONF_MMC_SUPPORT
|
|
/**
|
|
* \brief CMD8 - The card sends its EXT_CSD register as a block of data.
|
|
*
|
|
* \param b_authorize_high_speed Pointer to update with the high speed
|
|
* support information
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool mmc_cmd8(uint8_t *b_authorize_high_speed)
|
|
{
|
|
uint16_t i;
|
|
uint32_t ext_csd;
|
|
uint32_t sec_count;
|
|
|
|
if (!driver_adtc_start(sd_mmc_hal, MMC_CMD8_SEND_EXT_CSD, 0, EXT_CSD_BSIZE, 1, false)) {
|
|
return false;
|
|
}
|
|
/* Read and decode Extended Extended CSD
|
|
* Note: The read access is done in byte to avoid a buffer
|
|
* of EXT_CSD_BSIZE Byte in stack.*/
|
|
|
|
/* Read card type */
|
|
for (i = 0; i < (EXT_CSD_CARD_TYPE_INDEX + 4) / 4; i++) {
|
|
if (!driver_read_word(sd_mmc_hal, &ext_csd)) {
|
|
return false;
|
|
}
|
|
}
|
|
*b_authorize_high_speed = (ext_csd >> ((EXT_CSD_CARD_TYPE_INDEX % 4) * 8)) & MMC_CTYPE_52MHZ;
|
|
|
|
if (MMC_CSD_C_SIZE(sd_mmc_card->csd) == 0xFFF) {
|
|
/* For high capacity SD/MMC card,
|
|
* memory capacity = SEC_COUNT * 512 byte */
|
|
for (; i < (EXT_CSD_SEC_COUNT_INDEX + 4) / 4; i++) {
|
|
if (!driver_read_word(sd_mmc_hal, &sec_count)) {
|
|
return false;
|
|
}
|
|
}
|
|
sd_mmc_card->capacity = sec_count / 2;
|
|
}
|
|
for (; i < EXT_CSD_BSIZE / 4; i++) {
|
|
if (!driver_read_word(sd_mmc_hal, &sec_count)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
#endif
|
|
|
|
/**
|
|
* \brief CMD9: Addressed card sends its card-specific
|
|
* data (CSD) on the CMD line mci.
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool sd_mmc_cmd9_mci(void)
|
|
{
|
|
if (!driver_send_cmd(sd_mmc_hal, SDMMC_MCI_CMD9_SEND_CSD, (uint32_t)sd_mmc_card->rca << 16)) {
|
|
return false;
|
|
}
|
|
driver_get_response_128(sd_mmc_hal, sd_mmc_card->csd);
|
|
return true;
|
|
}
|
|
|
|
#if CONF_MMC_SUPPORT
|
|
/**
|
|
* \brief Decodes MMC CSD register
|
|
*/
|
|
static void mmc_decode_csd(void)
|
|
{
|
|
uint32_t unit;
|
|
uint32_t mul;
|
|
uint32_t tran_speed;
|
|
|
|
/* Get MMC System Specification version supported by the card */
|
|
switch (MMC_CSD_SPEC_VERS(sd_mmc_card->csd)) {
|
|
default:
|
|
case 0:
|
|
sd_mmc_card->version = CARD_VER_MMC_1_2;
|
|
break;
|
|
|
|
case 1:
|
|
sd_mmc_card->version = CARD_VER_MMC_1_4;
|
|
break;
|
|
|
|
case 2:
|
|
sd_mmc_card->version = CARD_VER_MMC_2_2;
|
|
break;
|
|
|
|
case 3:
|
|
sd_mmc_card->version = CARD_VER_MMC_3;
|
|
break;
|
|
|
|
case 4:
|
|
sd_mmc_card->version = CARD_VER_MMC_4;
|
|
break;
|
|
}
|
|
|
|
/* Get MMC memory max transfer speed in Hz.*/
|
|
tran_speed = CSD_TRAN_SPEED(sd_mmc_card->csd);
|
|
unit = sd_mmc_trans_units[tran_speed & 0x7];
|
|
mul = mmc_trans_multipliers[(tran_speed >> 3) & 0xF];
|
|
sd_mmc_card->clock = unit * mul * 1000;
|
|
|
|
/*
|
|
* Get card capacity.
|
|
* ----------------------------------------------------
|
|
* For normal SD/MMC card:
|
|
* memory capacity = BLOCKNR * BLOCK_LEN
|
|
* Where
|
|
* BLOCKNR = (C_SIZE+1) * MULT
|
|
* MULT = 2 ^ (C_SIZE_MULT+2) (C_SIZE_MULT < 8)
|
|
* BLOCK_LEN = 2 ^ READ_BL_LEN (READ_BL_LEN < 12)
|
|
* ----------------------------------------------------
|
|
* For high capacity SD/MMC card:
|
|
* memory capacity = SEC_COUNT * 512 byte
|
|
*/
|
|
if (MMC_CSD_C_SIZE(sd_mmc_card->csd) != 0xFFF) {
|
|
uint32_t blocknr
|
|
= ((MMC_CSD_C_SIZE(sd_mmc_card->csd) + 1) * (1 << (MMC_CSD_C_SIZE_MULT(sd_mmc_card->csd) + 2)));
|
|
sd_mmc_card->capacity = blocknr * (1 << MMC_CSD_READ_BL_LEN(sd_mmc_card->csd)) / 1024;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* \brief Decodes SD CSD register
|
|
*/
|
|
static void sd_decode_csd(void)
|
|
{
|
|
uint32_t unit;
|
|
uint32_t mul;
|
|
uint32_t tran_speed;
|
|
|
|
/* Get SD memory maximum transfer speed in Hz. */
|
|
tran_speed = CSD_TRAN_SPEED(sd_mmc_card->csd);
|
|
unit = sd_mmc_trans_units[tran_speed & 0x7];
|
|
mul = sd_trans_multipliers[(tran_speed >> 3) & 0xF];
|
|
sd_mmc_card->clock = unit * mul * 1000;
|
|
|
|
/*
|
|
* Get card capacity.
|
|
* ----------------------------------------------------
|
|
* For normal SD/MMC card:
|
|
* memory capacity = BLOCKNR * BLOCK_LEN
|
|
* Where
|
|
* BLOCKNR = (C_SIZE+1) * MULT
|
|
* MULT = 2 ^ (C_SIZE_MULT+2) (C_SIZE_MULT < 8)
|
|
* BLOCK_LEN = 2 ^ READ_BL_LEN (READ_BL_LEN < 12)
|
|
* ----------------------------------------------------
|
|
* For high capacity SD card:
|
|
* memory capacity = (C_SIZE+1) * 512K byte
|
|
*/
|
|
if (CSD_STRUCTURE_VERSION(sd_mmc_card->csd) >= SD_CSD_VER_2_0) {
|
|
sd_mmc_card->capacity = (SD_CSD_2_0_C_SIZE(sd_mmc_card->csd) + 1) * 512;
|
|
} else {
|
|
uint32_t blocknr
|
|
= ((SD_CSD_1_0_C_SIZE(sd_mmc_card->csd) + 1) * (1 << (SD_CSD_1_0_C_SIZE_MULT(sd_mmc_card->csd) + 2)));
|
|
sd_mmc_card->capacity = blocknr * (1 << SD_CSD_1_0_READ_BL_LEN(sd_mmc_card->csd)) / 1024;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* \brief CMD13 - Addressed card sends its status register.
|
|
* This function waits the clear of the busy flag
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool sd_mmc_cmd13(void)
|
|
{
|
|
uint32_t nec_timeout;
|
|
|
|
/* Wait for data ready status.
|
|
* Nec timing: 0 to unlimited
|
|
* However a timeout is used.
|
|
* 200 000 * 8 cycles
|
|
*/
|
|
nec_timeout = 200000;
|
|
do {
|
|
if (!driver_send_cmd(sd_mmc_hal, SDMMC_MCI_CMD13_SEND_STATUS, (uint32_t)sd_mmc_card->rca << 16)) {
|
|
return false;
|
|
}
|
|
/* Check busy flag */
|
|
if (driver_get_response(sd_mmc_hal) & CARD_STATUS_READY_FOR_DATA) {
|
|
break;
|
|
}
|
|
if (nec_timeout-- == 0) {
|
|
return false;
|
|
}
|
|
} while (1);
|
|
|
|
return true;
|
|
}
|
|
|
|
#if (CONF_SDIO_SUPPORT == 1)
|
|
/**
|
|
* \brief CMD52 - SDIO IO_RW_DIRECT command
|
|
*
|
|
* \param rw_flag Direction, 1:write, 0:read.
|
|
* \param func_nb Number of the function.
|
|
* \param rd_after_wr Read after Write flag.
|
|
* \param reg_addr register address.
|
|
* \param io_data Pointer to input argument and response buffer.
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool sdio_cmd52(uint8_t rw_flag, uint8_t func_nb, uint32_t reg_addr, uint8_t rd_after_wr, uint8_t *io_data)
|
|
{
|
|
ASSERT(io_data != NULL);
|
|
if (!driver_send_cmd(sd_mmc_hal,
|
|
SDIO_CMD52_IO_RW_DIRECT,
|
|
((uint32_t)*io_data << SDIO_CMD52_WR_DATA) | ((uint32_t)rw_flag << SDIO_CMD52_RW_FLAG)
|
|
| ((uint32_t)func_nb << SDIO_CMD52_FUNCTION_NUM)
|
|
| ((uint32_t)rd_after_wr << SDIO_CMD52_RAW_FLAG)
|
|
| ((uint32_t)reg_addr << SDIO_CMD52_REG_ADRR))) {
|
|
return false;
|
|
}
|
|
*io_data = driver_get_response(sd_mmc_hal) & 0xFF;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* \brief CMD53 - SDIO IO_RW_EXTENDED command
|
|
* This implementation support only the SDIO multi-byte transfer mode which is
|
|
* similar to the single block transfer on memory.
|
|
* Note: The SDIO block transfer mode is optional for SDIO card.
|
|
*
|
|
* \param rw_flag Direction, 1:write, 0:read.
|
|
* \param func_nb Number of the function.
|
|
* \param reg_addr Register address.
|
|
* \param inc_addr 1:Incrementing address, 0: fixed.
|
|
* \param size Transfer data size.
|
|
* \param access_block true, if the block access (DMA) is used
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool sdio_cmd53(uint8_t rw_flag, uint8_t func_nb, uint32_t reg_addr, uint8_t inc_addr, uint32_t size,
|
|
bool access_block)
|
|
{
|
|
ASSERT(size != 0);
|
|
ASSERT(size <= 512);
|
|
|
|
return driver_adtc_start(
|
|
sd_mmc_hal,
|
|
(rw_flag == SDIO_CMD53_READ_FLAG) ? SDIO_CMD53_IO_R_BYTE_EXTENDED : SDIO_CMD53_IO_W_BYTE_EXTENDED,
|
|
((size % 512) << SDIO_CMD53_COUNT) | ((uint32_t)reg_addr << SDIO_CMD53_REG_ADDR)
|
|
| ((uint32_t)inc_addr << SDIO_CMD53_OP_CODE) | ((uint32_t)0 << SDIO_CMD53_BLOCK_MODE)
|
|
| ((uint32_t)func_nb << SDIO_CMD53_FUNCTION_NUM) | ((uint32_t)rw_flag << SDIO_CMD53_RW_FLAG),
|
|
size,
|
|
1,
|
|
access_block);
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* \brief ACMD6 - Define the data bus width to 4 bits bus
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool sd_acmd6(void)
|
|
{
|
|
/* CMD55 - Indicate to the card that the next command is an
|
|
* application specific command rather than a standard command.*/
|
|
if (!driver_send_cmd(sd_mmc_hal, SDMMC_CMD55_APP_CMD, (uint32_t)sd_mmc_card->rca << 16)) {
|
|
return false;
|
|
}
|
|
/* 10b = 4 bits bus */
|
|
if (!driver_send_cmd(sd_mmc_hal, SD_ACMD6_SET_BUS_WIDTH, 0x2)) {
|
|
return false;
|
|
}
|
|
sd_mmc_card->bus_width = 4;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* \brief ACMD51 - Read the SD Configuration Register.
|
|
*
|
|
* \note
|
|
* SD Card Configuration Register (SCR) provides information on the SD Memory
|
|
* Card's special features that were configured into the given card. The size
|
|
* of SCR register is 64 bits.
|
|
*
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool sd_acmd51(void)
|
|
{
|
|
uint8_t scr[SD_SCR_REG_BSIZE];
|
|
|
|
/* CMD55 - Indicate to the card that the next command is an
|
|
* application specific command rather than a standard command.*/
|
|
if (!driver_send_cmd(sd_mmc_hal, SDMMC_CMD55_APP_CMD, (uint32_t)sd_mmc_card->rca << 16)) {
|
|
return false;
|
|
}
|
|
if (!driver_adtc_start(sd_mmc_hal, SD_ACMD51_SEND_SCR, 0, SD_SCR_REG_BSIZE, 1, true)) {
|
|
return false;
|
|
}
|
|
if (!driver_start_read_blocks(sd_mmc_hal, scr, 1)) {
|
|
return false;
|
|
}
|
|
if (!driver_wait_end_of_read_blocks(sd_mmc_hal)) {
|
|
return false;
|
|
}
|
|
|
|
/* Get SD Memory Card - Spec. Version */
|
|
switch (SD_SCR_SD_SPEC(scr)) {
|
|
case SD_SCR_SD_SPEC_1_0_01:
|
|
sd_mmc_card->version = CARD_VER_SD_1_0;
|
|
break;
|
|
|
|
case SD_SCR_SD_SPEC_1_10:
|
|
sd_mmc_card->version = CARD_VER_SD_1_10;
|
|
break;
|
|
|
|
case SD_SCR_SD_SPEC_2_00:
|
|
if (SD_SCR_SD_SPEC3(scr) == SD_SCR_SD_SPEC_3_00) {
|
|
sd_mmc_card->version = CARD_VER_SD_3_0;
|
|
} else {
|
|
sd_mmc_card->version = CARD_VER_SD_2_0;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
sd_mmc_card->version = CARD_VER_SD_1_0;
|
|
break;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* \brief Select a card slot and initialize the associated driver
|
|
*
|
|
* \param slot Card slot number
|
|
*
|
|
* \retval SD_MMC_ERR_SLOT Wrong slot number
|
|
* \retval SD_MMC_ERR_NO_CARD No card present on slot
|
|
* \retval SD_MMC_ERR_UNUSABLE Unusable card
|
|
* \retval SD_MMC_INIT_ONGOING Card initialization requested
|
|
* \retval SD_MMC_OK Card present
|
|
*/
|
|
static sd_mmc_err_t sd_mmc_select_slot(uint8_t slot)
|
|
{
|
|
if (slot >= CONF_SD_MMC_MEM_CNT) {
|
|
return SD_MMC_ERR_SLOT;
|
|
}
|
|
|
|
if (_cd && _cd[slot].pin != -1) {
|
|
/** Card Detect pins */
|
|
if (gpio_get_pin_level(_cd[slot].pin) != _cd[slot].val) {
|
|
if (sd_mmc_cards[slot].state == SD_MMC_CARD_STATE_DEBOUNCE) {
|
|
SD_MMC_STOP_TIMEOUT();
|
|
}
|
|
sd_mmc_cards[slot].state = SD_MMC_CARD_STATE_NO_CARD;
|
|
return SD_MMC_ERR_NO_CARD;
|
|
}
|
|
if (sd_mmc_cards[slot].state == SD_MMC_CARD_STATE_NO_CARD) {
|
|
/* A card plug on going, but this is not initialized */
|
|
sd_mmc_cards[slot].state = SD_MMC_CARD_STATE_DEBOUNCE;
|
|
/* Debounce + Power On Setup */
|
|
SD_MMC_START_TIMEOUT();
|
|
return SD_MMC_ERR_NO_CARD;
|
|
}
|
|
if (sd_mmc_cards[slot].state == SD_MMC_CARD_STATE_DEBOUNCE) {
|
|
if (!SD_MMC_IS_TIMEOUT()) {
|
|
/* Debounce on going */
|
|
return SD_MMC_ERR_NO_CARD;
|
|
}
|
|
/* Card is not initialized */
|
|
sd_mmc_cards[slot].state = SD_MMC_CARD_STATE_INIT;
|
|
/* Set 1-bit bus width and low clock for initialization */
|
|
sd_mmc_cards[slot].clock = SDMMC_CLOCK_INIT;
|
|
sd_mmc_cards[slot].bus_width = 1;
|
|
sd_mmc_cards[slot].high_speed = 0;
|
|
}
|
|
if (sd_mmc_cards[slot].state == SD_MMC_CARD_STATE_UNUSABLE) {
|
|
return SD_MMC_ERR_UNUSABLE;
|
|
}
|
|
} else {
|
|
/* No pin card detection, then always try to install it */
|
|
if ((sd_mmc_cards[slot].state == SD_MMC_CARD_STATE_NO_CARD)
|
|
|| (sd_mmc_cards[slot].state == SD_MMC_CARD_STATE_UNUSABLE)) {
|
|
/* Card is not initialized */
|
|
sd_mmc_cards[slot].state = SD_MMC_CARD_STATE_INIT;
|
|
/* Set 1-bit bus width and low clock for initialization */
|
|
sd_mmc_cards[slot].clock = SDMMC_CLOCK_INIT;
|
|
sd_mmc_cards[slot].bus_width = 1;
|
|
sd_mmc_cards[slot].high_speed = 0;
|
|
}
|
|
}
|
|
|
|
ASSERT(!(sd_mmc_slot_sel != slot && sd_mmc_nb_block_remaining != 0));
|
|
|
|
/* Initialize interface */
|
|
sd_mmc_slot_sel = slot;
|
|
sd_mmc_card = &sd_mmc_cards[slot];
|
|
sd_mmc_configure_slot();
|
|
return (sd_mmc_cards[slot].state == SD_MMC_CARD_STATE_INIT) ? SD_MMC_INIT_ONGOING : SD_MMC_OK;
|
|
}
|
|
|
|
/**
|
|
* \brief Configures the driver with the selected card configuration
|
|
*/
|
|
static void sd_mmc_configure_slot(void)
|
|
{
|
|
driver_select_device(
|
|
sd_mmc_hal, sd_mmc_slot_sel, sd_mmc_card->clock, sd_mmc_card->bus_width, sd_mmc_card->high_speed);
|
|
}
|
|
|
|
/**
|
|
* \brief Deselect the current card slot
|
|
*/
|
|
static void sd_mmc_deselect_slot(void)
|
|
{
|
|
if (sd_mmc_slot_sel < CONF_SD_MMC_MEM_CNT) {
|
|
driver_deselect_device(sd_mmc_hal, sd_mmc_slot_sel);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* \brief Initialize the SD card in MCI mode.
|
|
*
|
|
* \note
|
|
* This function runs the initialization procedure and the identification
|
|
* process, then it sets the SD/MMC card in transfer state.
|
|
* At last, it will automaticly enable maximum bus width and transfer speed.
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool sd_mmc_mci_card_init(void)
|
|
{
|
|
uint8_t v2 = 0;
|
|
#if (CONF_SDIO_SUPPORT == 1)
|
|
uint8_t data = 0x08;
|
|
#endif
|
|
|
|
/* In first, try to install SD/SDIO card */
|
|
sd_mmc_card->type = CARD_TYPE_SD;
|
|
sd_mmc_card->version = CARD_VER_UNKNOWN;
|
|
sd_mmc_card->rca = 0;
|
|
|
|
/* Card need of 74 cycles clock minimum to start */
|
|
driver_send_clock(sd_mmc_hal);
|
|
|
|
#if (CONF_SDIO_SUPPORT == 1)
|
|
/* CMD52 Reset SDIO */
|
|
sdio_cmd52(SDIO_CMD52_WRITE_FLAG, SDIO_CIA, SDIO_CCCR_IOA, 0, &data);
|
|
#endif
|
|
|
|
/* CMD0 - Reset all cards to idle state.*/
|
|
if (!driver_send_cmd(sd_mmc_hal, SDMMC_MCI_CMD0_GO_IDLE_STATE, 0)) {
|
|
return false;
|
|
}
|
|
if (!sd_cmd8(&v2)) {
|
|
return false;
|
|
}
|
|
/* Try to get the SDIO card's operating condition */
|
|
if (!sdio_op_cond()) {
|
|
return false;
|
|
}
|
|
|
|
if (sd_mmc_card->type & CARD_TYPE_SD) {
|
|
/* Try to get the SD card's operating condition */
|
|
if (!sd_mci_op_cond(v2)) {
|
|
/* It is not a SD card */
|
|
#if CONF_MMC_SUPPORT
|
|
sd_mmc_card->type = CARD_TYPE_MMC;
|
|
return sd_mmc_mci_install_mmc();
|
|
#else
|
|
sd_mmc_card->type = CARD_TYPE_UNKNOWN;
|
|
return false;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (sd_mmc_card->type & CARD_TYPE_SD) {
|
|
/* SD MEMORY, Put the Card in Identify Mode
|
|
* Note: The CID is not used in this stack */
|
|
if (!driver_send_cmd(sd_mmc_hal, SDMMC_CMD2_ALL_SEND_CID, 0)) {
|
|
return false;
|
|
}
|
|
}
|
|
/* Ask the card to publish a new relative address (RCA).*/
|
|
if (!driver_send_cmd(sd_mmc_hal, SD_CMD3_SEND_RELATIVE_ADDR, 0)) {
|
|
return false;
|
|
}
|
|
sd_mmc_card->rca = (driver_get_response(sd_mmc_hal) >> 16) & 0xFFFF;
|
|
|
|
/* SD MEMORY, Get the Card-Specific Data */
|
|
if (sd_mmc_card->type & CARD_TYPE_SD) {
|
|
if (!sd_mmc_cmd9_mci()) {
|
|
return false;
|
|
}
|
|
sd_decode_csd();
|
|
}
|
|
/* Select the and put it into Transfer Mode */
|
|
if (!driver_send_cmd(sd_mmc_hal, SDMMC_CMD7_SELECT_CARD_CMD, (uint32_t)sd_mmc_card->rca << 16)) {
|
|
return false;
|
|
}
|
|
/* SD MEMORY, Read the SCR to get card version */
|
|
if (sd_mmc_card->type & CARD_TYPE_SD) {
|
|
if (!sd_acmd51()) {
|
|
return false;
|
|
}
|
|
}
|
|
if (IS_SDIO()) {
|
|
if (!sdio_get_max_speed()) {
|
|
return false;
|
|
}
|
|
}
|
|
if ((4 <= driver_get_bus_width(sd_mmc_hal, sd_mmc_slot_sel))) {
|
|
/* TRY to enable 4-bit mode */
|
|
if (IS_SDIO()) {
|
|
if (!sdio_cmd52_set_bus_width()) {
|
|
return false;
|
|
}
|
|
}
|
|
if (sd_mmc_card->type & CARD_TYPE_SD) {
|
|
if (!sd_acmd6()) {
|
|
return false;
|
|
}
|
|
}
|
|
/* Switch to selected bus mode */
|
|
sd_mmc_configure_slot();
|
|
}
|
|
if (driver_is_high_speed_capable(sd_mmc_hal)) {
|
|
/* TRY to enable High-Speed Mode */
|
|
if (IS_SDIO()) {
|
|
if (!sdio_cmd52_set_high_speed()) {
|
|
return false;
|
|
}
|
|
}
|
|
if (sd_mmc_card->type & CARD_TYPE_SD) {
|
|
if (sd_mmc_card->version > CARD_VER_SD_1_0) {
|
|
if (!sd_cm6_set_high_speed()) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
/* Valid new configuration */
|
|
sd_mmc_configure_slot();
|
|
}
|
|
/* SD MEMORY, Set default block size */
|
|
if (sd_mmc_card->type & CARD_TYPE_SD) {
|
|
if (!driver_send_cmd(sd_mmc_hal, SDMMC_CMD16_SET_BLOCKLEN, SD_MMC_BLOCK_SIZE)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
#if CONF_MMC_SUPPORT
|
|
/**
|
|
* \brief Initialize the MMC card in MCI mode.
|
|
*
|
|
* \note
|
|
* This function runs the initialization procedure and the identification
|
|
* process, then it sets the SD/MMC card in transfer state.
|
|
* At last, it will automaticly enable maximum bus width and transfer speed.
|
|
*
|
|
* \return true if success, otherwise false
|
|
*/
|
|
static bool sd_mmc_mci_install_mmc(void)
|
|
{
|
|
uint8_t b_authorize_high_speed;
|
|
|
|
/* CMD0 - Reset all cards to idle state. */
|
|
if (!driver_send_cmd(sd_mmc_hal, SDMMC_MCI_CMD0_GO_IDLE_STATE, 0)) {
|
|
return false;
|
|
}
|
|
|
|
if (!mmc_mci_op_cond()) {
|
|
return false;
|
|
}
|
|
|
|
/* Put the Card in Identify Mode
|
|
* Note: The CID is not used in this stack*/
|
|
if (!driver_send_cmd(sd_mmc_hal, SDMMC_CMD2_ALL_SEND_CID, 0)) {
|
|
return false;
|
|
}
|
|
/* Assign relative address to the card.*/
|
|
sd_mmc_card->rca = 1;
|
|
if (!driver_send_cmd(sd_mmc_hal, MMC_CMD3_SET_RELATIVE_ADDR, (uint32_t)sd_mmc_card->rca << 16)) {
|
|
return false;
|
|
}
|
|
/* Get the Card-Specific Data */
|
|
if (!sd_mmc_cmd9_mci()) {
|
|
return false;
|
|
}
|
|
mmc_decode_csd();
|
|
/* Select the and put it into Transfer Mode */
|
|
if (!driver_send_cmd(sd_mmc_hal, SDMMC_CMD7_SELECT_CARD_CMD, (uint32_t)sd_mmc_card->rca << 16)) {
|
|
return false;
|
|
}
|
|
if (sd_mmc_card->version >= CARD_VER_MMC_4) {
|
|
/* For MMC 4.0 Higher version
|
|
* Get EXT_CSD */
|
|
if (!mmc_cmd8(&b_authorize_high_speed)) {
|
|
return false;
|
|
}
|
|
if (4 <= driver_get_bus_width(sd_mmc_hal, sd_mmc_slot_sel)) {
|
|
/* Enable more bus width */
|
|
if (!mmc_cmd6_set_bus_width(driver_get_bus_width(sd_mmc_hal, sd_mmc_slot_sel))) {
|
|
return false;
|
|
}
|
|
/* Reinitialize the slot with the bus width */
|
|
sd_mmc_configure_slot();
|
|
}
|
|
if (driver_is_high_speed_capable(sd_mmc_hal) && b_authorize_high_speed) {
|
|
/* Enable HS */
|
|
if (!mmc_cmd6_set_high_speed()) {
|
|
return false;
|
|
}
|
|
/* Reinitialize the slot with the new speed */
|
|
sd_mmc_configure_slot();
|
|
}
|
|
} else {
|
|
/* Reinitialize the slot with the new speed */
|
|
sd_mmc_configure_slot();
|
|
}
|
|
|
|
uint8_t retry = 10;
|
|
while (retry--) {
|
|
/* Retry is a WORKAROUND for no compliance card (Atmel Internal ref. MMC19):
|
|
* These cards seem not ready immediatly
|
|
* after the end of busy of mmc_cmd6_set_high_speed()*/
|
|
|
|
/* Set default block size */
|
|
if (driver_send_cmd(sd_mmc_hal, SDMMC_CMD16_SET_BLOCKLEN, SD_MMC_BLOCK_SIZE)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
/*--------------------- PUBLIC FUNCTIONS ----------------------------*/
|
|
|
|
void sd_mmc_init(void *hal, sd_mmc_detect_t *card_detects, sd_mmc_detect_t *wp_detects)
|
|
{
|
|
/* GPIO will be used to detect card and write protect.
|
|
* The related clocks and pinmux must be configurated in good
|
|
* condition. */
|
|
|
|
for (uint8_t slot = 0; slot < CONF_SD_MMC_MEM_CNT; slot++) {
|
|
sd_mmc_cards[slot].state = SD_MMC_CARD_STATE_NO_CARD;
|
|
}
|
|
sd_mmc_slot_sel = 0xFF; /* No slot configurated */
|
|
sd_mmc_hal = hal;
|
|
_cd = card_detects;
|
|
_wp = wp_detects;
|
|
}
|
|
|
|
uint8_t sd_mmc_nb_slot(void)
|
|
{
|
|
return CONF_SD_MMC_MEM_CNT;
|
|
}
|
|
|
|
sd_mmc_err_t sd_mmc_check(uint8_t slot)
|
|
{
|
|
sd_mmc_err_t sd_mmc_err;
|
|
|
|
sd_mmc_err = sd_mmc_select_slot(slot);
|
|
if (sd_mmc_err != SD_MMC_INIT_ONGOING) {
|
|
sd_mmc_deselect_slot();
|
|
return sd_mmc_err;
|
|
}
|
|
|
|
/* Initialization of the card requested */
|
|
if (sd_mmc_mci_card_init()) {
|
|
sd_mmc_card->state = SD_MMC_CARD_STATE_READY;
|
|
sd_mmc_deselect_slot();
|
|
/* To notify that the card has been just initialized
|
|
* It is necessary for USB Device MSC */
|
|
return SD_MMC_INIT_ONGOING;
|
|
}
|
|
sd_mmc_card->state = SD_MMC_CARD_STATE_UNUSABLE;
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_UNUSABLE;
|
|
}
|
|
|
|
card_type_t sd_mmc_get_type(uint8_t slot)
|
|
{
|
|
if (SD_MMC_OK != sd_mmc_select_slot(slot)) {
|
|
return CARD_TYPE_UNKNOWN;
|
|
}
|
|
sd_mmc_deselect_slot();
|
|
return sd_mmc_card->type;
|
|
}
|
|
|
|
card_version_t sd_mmc_get_version(uint8_t slot)
|
|
{
|
|
if (SD_MMC_OK != sd_mmc_select_slot(slot)) {
|
|
return CARD_VER_UNKNOWN;
|
|
}
|
|
sd_mmc_deselect_slot();
|
|
return sd_mmc_card->version;
|
|
}
|
|
|
|
uint32_t sd_mmc_get_capacity(uint8_t slot)
|
|
{
|
|
if (SD_MMC_OK != sd_mmc_select_slot(slot)) {
|
|
return 0;
|
|
}
|
|
sd_mmc_deselect_slot();
|
|
return sd_mmc_card->capacity;
|
|
}
|
|
|
|
bool sd_mmc_is_write_protected(uint8_t slot)
|
|
{
|
|
/* No detection, always writable */
|
|
if (!_wp || _wp[slot].pin == -1) {
|
|
return false;
|
|
}
|
|
/* Write Protect Detect */
|
|
if (gpio_get_pin_level(_wp[slot].pin) == _wp[slot].val) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
sd_mmc_err_t sd_mmc_init_read_blocks(uint8_t slot, uint32_t start, uint16_t nb_block)
|
|
{
|
|
sd_mmc_err_t sd_mmc_err;
|
|
uint32_t cmd, arg, resp;
|
|
|
|
sd_mmc_err = sd_mmc_select_slot(slot);
|
|
if (sd_mmc_err != SD_MMC_OK) {
|
|
return sd_mmc_err;
|
|
}
|
|
|
|
/* Wait for data ready status */
|
|
if (!sd_mmc_cmd13()) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
|
|
if (nb_block > 1) {
|
|
cmd = SDMMC_CMD18_READ_MULTIPLE_BLOCK;
|
|
} else {
|
|
cmd = SDMMC_CMD17_READ_SINGLE_BLOCK;
|
|
}
|
|
/*
|
|
* SDSC Card (CCS=0) uses byte unit address,
|
|
* SDHC and SDXC Cards (CCS=1) use block unit address (512 Bytes unit).
|
|
*/
|
|
if (sd_mmc_card->type & CARD_TYPE_HC) {
|
|
arg = start;
|
|
} else {
|
|
arg = (start * SD_MMC_BLOCK_SIZE);
|
|
}
|
|
|
|
if (!driver_adtc_start(sd_mmc_hal, cmd, arg, SD_MMC_BLOCK_SIZE, nb_block, true)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
/* Check response */
|
|
resp = driver_get_response(sd_mmc_hal);
|
|
if (resp & CARD_STATUS_ERR_RD_WR) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
|
|
sd_mmc_nb_block_remaining = nb_block;
|
|
sd_mmc_nb_block_to_tranfer = nb_block;
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
sd_mmc_err_t sd_mmc_start_read_blocks(void *dest, uint16_t nb_block)
|
|
{
|
|
ASSERT(sd_mmc_nb_block_remaining >= nb_block);
|
|
|
|
if (!driver_start_read_blocks(sd_mmc_hal, dest, nb_block)) {
|
|
sd_mmc_nb_block_remaining = 0;
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
sd_mmc_nb_block_remaining -= nb_block;
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
sd_mmc_err_t sd_mmc_wait_end_of_read_blocks(bool abort)
|
|
{
|
|
if (!driver_wait_end_of_read_blocks(sd_mmc_hal)) {
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
if (abort) {
|
|
sd_mmc_nb_block_remaining = 0;
|
|
} else if (sd_mmc_nb_block_remaining) {
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
/* All blocks are transfered then stop read operation */
|
|
if (sd_mmc_nb_block_to_tranfer == 1) {
|
|
/* Single block transfer, then nothing to do */
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_OK;
|
|
}
|
|
/* WORKAROUND for no compliance card (Atmel Internal ref. !MMC7 !SD19):
|
|
* The errors on this command must be ignored
|
|
* and one retry can be necessary in SPI mode for no compliance card.*/
|
|
if (!driver_adtc_stop(sd_mmc_hal, SDMMC_CMD12_STOP_TRANSMISSION, 0)) {
|
|
driver_adtc_stop(sd_mmc_hal, SDMMC_CMD12_STOP_TRANSMISSION, 0);
|
|
}
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
sd_mmc_err_t sd_mmc_init_write_blocks(uint8_t slot, uint32_t start, uint16_t nb_block)
|
|
{
|
|
sd_mmc_err_t sd_mmc_err;
|
|
uint32_t cmd, arg, resp;
|
|
|
|
sd_mmc_err = sd_mmc_select_slot(slot);
|
|
if (sd_mmc_err != SD_MMC_OK) {
|
|
return sd_mmc_err;
|
|
}
|
|
if (sd_mmc_is_write_protected(slot)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_WP;
|
|
}
|
|
|
|
if (nb_block > 1) {
|
|
cmd = SDMMC_CMD25_WRITE_MULTIPLE_BLOCK;
|
|
} else {
|
|
cmd = SDMMC_CMD24_WRITE_BLOCK;
|
|
}
|
|
/*
|
|
* SDSC Card (CCS=0) uses byte unit address,
|
|
* SDHC and SDXC Cards (CCS=1) use block unit address (512 Bytes unit).
|
|
*/
|
|
if (sd_mmc_card->type & CARD_TYPE_HC) {
|
|
arg = start;
|
|
} else {
|
|
arg = (start * SD_MMC_BLOCK_SIZE);
|
|
}
|
|
if (!driver_adtc_start(sd_mmc_hal, cmd, arg, SD_MMC_BLOCK_SIZE, nb_block, true)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
/* Check response */
|
|
resp = driver_get_response(sd_mmc_hal);
|
|
if (resp & CARD_STATUS_ERR_RD_WR) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
|
|
sd_mmc_nb_block_remaining = nb_block;
|
|
sd_mmc_nb_block_to_tranfer = nb_block;
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
sd_mmc_err_t sd_mmc_start_write_blocks(const void *src, uint16_t nb_block)
|
|
{
|
|
ASSERT(sd_mmc_nb_block_remaining >= nb_block);
|
|
if (!driver_start_write_blocks(sd_mmc_hal, src, nb_block)) {
|
|
sd_mmc_nb_block_remaining = 0;
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
sd_mmc_nb_block_remaining -= nb_block;
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
sd_mmc_err_t sd_mmc_wait_end_of_write_blocks(bool abort)
|
|
{
|
|
if (!driver_wait_end_of_write_blocks(sd_mmc_hal)) {
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
if (abort) {
|
|
sd_mmc_nb_block_remaining = 0;
|
|
} else if (sd_mmc_nb_block_remaining) {
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
/* All blocks are transfered then stop write operation */
|
|
if (sd_mmc_nb_block_to_tranfer == 1) {
|
|
/* Single block transfer, then nothing to do */
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
/* Note: SPI multiblock writes terminate using a special
|
|
* token, not a STOP_TRANSMISSION request.*/
|
|
if (!driver_adtc_stop(sd_mmc_hal, SDMMC_CMD12_STOP_TRANSMISSION, 0)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
#if (CONF_SDIO_SUPPORT == 1)
|
|
sd_mmc_err_t sdio_read_direct(uint8_t slot, uint8_t func_num, uint32_t addr, uint8_t *dest)
|
|
{
|
|
sd_mmc_err_t sd_mmc_err;
|
|
|
|
if (dest == NULL) {
|
|
return SD_MMC_ERR_PARAM;
|
|
}
|
|
|
|
sd_mmc_err = sd_mmc_select_slot(slot);
|
|
if (sd_mmc_err != SD_MMC_OK) {
|
|
return sd_mmc_err;
|
|
}
|
|
|
|
if (!sdio_cmd52(SDIO_CMD52_READ_FLAG, func_num, addr, 0, dest)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
sd_mmc_err_t sdio_write_direct(uint8_t slot, uint8_t func_num, uint32_t addr, uint8_t data)
|
|
{
|
|
sd_mmc_err_t sd_mmc_err;
|
|
|
|
sd_mmc_err = sd_mmc_select_slot(slot);
|
|
if (sd_mmc_err != SD_MMC_OK) {
|
|
return sd_mmc_err;
|
|
}
|
|
|
|
if (!sdio_cmd52(SDIO_CMD52_WRITE_FLAG, func_num, addr, 0, &data)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
sd_mmc_err_t sdio_read_extended(uint8_t slot, uint8_t func_num, uint32_t addr, uint8_t inc_addr, uint8_t *dest,
|
|
uint16_t size)
|
|
{
|
|
sd_mmc_err_t sd_mmc_err;
|
|
|
|
if ((size == 0) || (size > 512)) {
|
|
return SD_MMC_ERR_PARAM;
|
|
}
|
|
|
|
sd_mmc_err = sd_mmc_select_slot(slot);
|
|
if (sd_mmc_err != SD_MMC_OK) {
|
|
return sd_mmc_err;
|
|
}
|
|
|
|
if (!sdio_cmd53(SDIO_CMD53_READ_FLAG, func_num, addr, inc_addr, size, true)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
if (!driver_start_read_blocks(sd_mmc_hal, dest, 1)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
if (!driver_wait_end_of_read_blocks(sd_mmc_hal)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_OK;
|
|
}
|
|
|
|
sd_mmc_err_t sdio_write_extended(uint8_t slot, uint8_t func_num, uint32_t addr, uint8_t inc_addr, uint8_t *src,
|
|
uint16_t size)
|
|
{
|
|
sd_mmc_err_t sd_mmc_err;
|
|
|
|
if ((size == 0) || (size > 512)) {
|
|
return SD_MMC_ERR_PARAM;
|
|
}
|
|
|
|
sd_mmc_err = sd_mmc_select_slot(slot);
|
|
if (sd_mmc_err != SD_MMC_OK) {
|
|
return sd_mmc_err;
|
|
}
|
|
|
|
if (!sdio_cmd53(SDIO_CMD53_WRITE_FLAG, func_num, addr, inc_addr, size, true)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
if (!driver_start_write_blocks(sd_mmc_hal, src, 1)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
if (!driver_wait_end_of_write_blocks(sd_mmc_hal)) {
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_ERR_COMM;
|
|
}
|
|
|
|
sd_mmc_deselect_slot();
|
|
return SD_MMC_OK;
|
|
}
|
|
#endif
|
|
|
|
/** @} */
|