133 lines
6.3 KiB
C
133 lines
6.3 KiB
C
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/*
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* Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org>
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* Adaptations to ESP-IDF Copyright (c) 2016-2018 Espressif Systems (Shanghai) PTE LTD
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#pragma once
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#include <string.h>
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#include "sdmmc_defs.h"
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#include "sdmmc_types.h"
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#include "sdmmc_cmd.h"
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#define SDMMC_GO_IDLE_DELAY_MS 20
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#define SDMMC_IO_SEND_OP_COND_DELAY_MS 10
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/* These delay values are mostly useful for cases when CD pin is not used, and
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* the card is removed. In this case, SDMMC peripheral may not always return
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* CMD_DONE / DATA_DONE interrupts after signaling the error. These timeouts work
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* as a safety net in such cases.
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*/
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#define SDMMC_DEFAULT_CMD_TIMEOUT_MS 1000 // Max timeout of ordinary commands
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#define SDMMC_WRITE_CMD_TIMEOUT_MS 5000 // Max timeout of write commands
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/* Maximum retry/error count for SEND_OP_COND (CMD1).
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* These are somewhat arbitrary, values originate from OpenBSD driver.
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*/
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#define SDMMC_SEND_OP_COND_MAX_RETRIES 100
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#define SDMMC_SEND_OP_COND_MAX_ERRORS 3
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/* Functions to send individual commands */
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sdmmc_err_t sdmmc_send_cmd(sdmmc_card_t* card, sdmmc_command_t* cmd);
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sdmmc_err_t sdmmc_send_app_cmd(sdmmc_card_t* card, sdmmc_command_t* cmd);
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sdmmc_err_t sdmmc_send_cmd_go_idle_state(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_send_cmd_send_if_cond(sdmmc_card_t* card, uint32_t ocr);
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sdmmc_err_t sdmmc_send_cmd_send_op_cond(sdmmc_card_t* card, uint32_t ocr, uint32_t *ocrp);
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sdmmc_err_t sdmmc_send_cmd_read_ocr(sdmmc_card_t *card, uint32_t *ocrp);
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sdmmc_err_t sdmmc_send_cmd_send_cid(sdmmc_card_t *card, sdmmc_cid_t *out_cid);
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sdmmc_err_t sdmmc_send_cmd_all_send_cid(sdmmc_card_t* card, sdmmc_response_t* out_raw_cid);
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sdmmc_err_t sdmmc_send_cmd_set_relative_addr(sdmmc_card_t* card, uint16_t* out_rca);
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sdmmc_err_t sdmmc_send_cmd_set_blocklen(sdmmc_card_t* card, sdmmc_csd_t* csd);
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sdmmc_err_t sdmmc_send_cmd_switch_func(sdmmc_card_t* card,
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uint32_t mode, uint32_t group, uint32_t function,
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sdmmc_switch_func_rsp_t* resp);
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sdmmc_err_t sdmmc_send_cmd_send_csd(sdmmc_card_t* card, sdmmc_csd_t* out_csd);
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sdmmc_err_t sdmmc_send_cmd_select_card(sdmmc_card_t* card, uint32_t rca);
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sdmmc_err_t sdmmc_send_cmd_send_scr(sdmmc_card_t* card, sdmmc_scr_t *out_scr);
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sdmmc_err_t sdmmc_send_cmd_set_bus_width(sdmmc_card_t* card, int width);
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sdmmc_err_t sdmmc_send_cmd_send_status(sdmmc_card_t* card, uint32_t* out_status);
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sdmmc_err_t sdmmc_send_cmd_crc_on_off(sdmmc_card_t* card, bool crc_enable);
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/* Higher level functions */
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sdmmc_err_t sdmmc_enable_hs_mode(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_enable_hs_mode_and_check(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_write_sectors_dma(sdmmc_card_t* card, const void* src,
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size_t start_block, size_t block_count);
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sdmmc_err_t sdmmc_read_sectors_dma(sdmmc_card_t* card, void* dst,
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size_t start_block, size_t block_count);
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/* SD specific */
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sdmmc_err_t sdmmc_check_scr(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_decode_cid(sdmmc_response_t resp, sdmmc_cid_t* out_cid);
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sdmmc_err_t sdmmc_decode_csd(sdmmc_response_t response, sdmmc_csd_t* out_csd);
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sdmmc_err_t sdmmc_decode_scr(uint32_t *raw_scr, sdmmc_scr_t* out_scr);
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/* SDIO specific */
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sdmmc_err_t sdmmc_io_reset(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_io_enable_hs_mode(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_io_send_op_cond(sdmmc_card_t* card, uint32_t ocr, uint32_t *ocrp);
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sdmmc_err_t sdmmc_io_rw_direct(sdmmc_card_t* card, int function,
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uint32_t reg, uint32_t arg, uint8_t *byte);
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sdmmc_err_t sdmmc_io_rw_extended(sdmmc_card_t* card, int function,
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uint32_t reg, int arg, void *data, size_t size);
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/* MMC specific */
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sdmmc_err_t sdmmc_mmc_send_ext_csd_data(sdmmc_card_t* card, void *out_data, size_t datalen);
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sdmmc_err_t sdmmc_mmc_switch(sdmmc_card_t* card, uint8_t set, uint8_t index, uint8_t value);
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sdmmc_err_t sdmmc_mmc_decode_cid(int mmc_ver, sdmmc_response_t resp, sdmmc_cid_t* out_cid);
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sdmmc_err_t sdmmc_mmc_decode_csd(sdmmc_response_t response, sdmmc_csd_t* out_csd);
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sdmmc_err_t sdmmc_mmc_enable_hs_mode(sdmmc_card_t* card);
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/* Parts of card initialization flow */
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sdmmc_err_t sdmmc_init_sd_if_cond(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_select_card(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_csd(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_cid(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_rca(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_mmc_decode_cid(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_ocr(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_spi_crc(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_io(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_sd_blocklen(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_sd_scr(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_sd_wait_data_ready(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_mmc_read_ext_csd(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_mmc_read_cid(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_host_bus_width(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_sd_bus_width(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_io_bus_width(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_mmc_bus_width(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_card_hs_mode(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_host_frequency(sdmmc_card_t* card);
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sdmmc_err_t sdmmc_init_mmc_check_csd(sdmmc_card_t* card);
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/* Various helper functions */
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static inline bool host_is_spi(const sdmmc_card_t* card)
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{
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return (card->host.flags & SDMMC_HOST_FLAG_SPI) != 0;
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}
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static inline uint32_t get_host_ocr(float voltage)
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{
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// TODO: report exact voltage to the card
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// For now tell that the host has 2.8-3.6V voltage range
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(void) voltage;
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return SD_OCR_VOL_MASK;
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}
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void sdmmc_flip_byte_order(uint32_t* response, size_t size);
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sdmmc_err_t sdmmc_fix_host_flags(sdmmc_card_t* card);
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