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256 lines
7.8 KiB
C
256 lines
7.8 KiB
C
4 years ago
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/**
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* \file
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*
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* \brief SAM MCI HPL
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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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#ifndef _HPL_MCI_H_INCLUDED
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#define _HPL_MCI_H_INCLUDED
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#include <compiler.h>
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#include <utils.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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//! \name Flags used to define MCI parser for SD/MMC command
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//! @{
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//! Have response
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#define MCI_RESP_PRESENT (1lu << 8)
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//! 136 bit response
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#define MCI_RESP_136 (1lu << 11)
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//! Expect valid crc
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#define MCI_RESP_CRC (1lu << 12)
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//! Card may send busy
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#define MCI_RESP_BUSY (1lu << 13)
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//! Open drain for a braodcast command
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#define MCI_CMD_OPENDRAIN (1lu << 14)
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//! To signal a data write operation
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#define MCI_CMD_WRITE (1lu << 15)
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//! To signal a SDIO tranfer in multi byte mode
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#define MCI_CMD_SDIO_BYTE (1lu << 16)
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//! To signal a SDIO tranfer in block mode
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#define MCI_CMD_SDIO_BLOCK (1lu << 17)
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//! To signal a data transfer in stream mode
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#define MCI_CMD_STREAM (1lu << 18)
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//! To signal a data transfer in single block mode
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#define MCI_CMD_SINGLE_BLOCK (1lu << 19)
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//! To signal a data transfer in multi block mode
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#define MCI_CMD_MULTI_BLOCK (1lu << 20)
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//! @}
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/**
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* \brief mci sync device structure
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*/
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struct _mci_sync_device {
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void * hw;
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uint64_t mci_sync_trans_pos;
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uint16_t mci_sync_block_size;
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uint16_t mci_sync_nb_block;
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};
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/**
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* \brief Initialize MCI low level driver.
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*
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* \return Operation status.
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* \retval 0 Success.
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* \retval <0 Error code.
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*/
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int32_t _mci_sync_init(struct _mci_sync_device *const mci_dev, void *const hw);
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/**
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* \brief Deinitialize MCI low level driver.
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*
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* \return Operation status.
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* \retval 0 Success.
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* \retval <0 Error code.
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*/
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int32_t _mci_sync_deinit(struct _mci_sync_device *const mci_dev);
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/**
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* \brief Select a device and initialize it
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*
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* \param[in] slot Selected slot
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* \param[in] clock Maximum clock to use (Hz)
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* \param[in] bus_width Bus width to use (1, 4 or 8)
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* \param[in] high_speed true, to enable high speed mode
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* \return Operation status.
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* \retval 0 Success.
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* \retval <0 Error code.
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*/
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int32_t _mci_sync_select_device(struct _mci_sync_device *const mci_dev, uint8_t slot, uint32_t clock, uint8_t bus_width,
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bool high_speed);
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/**
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* \brief Deselect a device by an assigned slot
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*
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* \param[in] slot Selected slot
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* \return Operation status.
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* \retval 0 Success.
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* \retval <0 Error code.
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*/
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int32_t _mci_sync_deselect_device(struct _mci_sync_device *const mci_dev, uint8_t slot);
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/**
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* \brief Get the maximum bus width of a device
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* by a selected slot
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*
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* \param[in] slot Selected slot
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* \return bus width.
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*/
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uint8_t _mci_sync_get_bus_width(struct _mci_sync_device *const mci_dev, uint8_t slot);
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/**
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* \brief Get the high speed capability of the device.
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*
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* \return true, if the high speed is supported.
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*/
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bool _mci_sync_is_high_speed_capable(struct _mci_sync_device *const mci_dev);
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/**
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* \brief Send 74 clock cycles on the line.
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* Note: It is required after card plug and before card install.
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*/
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void _mci_sync_send_clock(struct _mci_sync_device *const mci_dev);
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/**
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* \brief Send a command on the selected slot
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*
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* \param[in] cmd Command definition
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* \param[in] arg Argument of the command
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* \return true if success, otherwise false
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*/
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bool _mci_sync_send_cmd(struct _mci_sync_device *const mci_dev, uint32_t cmd, uint32_t arg);
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/**
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* \brief Get 32 bits response of the last command.
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*
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* \return 32 bits response.
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*/
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uint32_t _mci_sync_get_response(struct _mci_sync_device *const mci_dev);
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/**
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* \brief Get 128 bits response of the last command.
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*
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* \param[in] response Pointer on the array to fill
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* with the 128 bits response.
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*/
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void _mci_sync_get_response_128(struct _mci_sync_device *const mci_dev, uint8_t *response);
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/**
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* \brief Send an ADTC command on the selected slot
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* An ADTC (Addressed Data Transfer Commands)
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* command is used for read/write access..
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*
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* \param[in] cmd Command definition.
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* \param[in] arg Argument of the command.
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* \param[in] block_size Block size used for the transfer.
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* \param[in] nb_block Total number of block for this transfer
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* \param[in] access_block if true, the x_read_blocks() and x_write_blocks()
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* functions must be used after this function.
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* If false, the mci_read_word() and mci_write_word()
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* functions must be used after this function.
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*
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* \return true if success, otherwise false
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*/
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bool _mci_sync_adtc_start(struct _mci_sync_device *const mci_dev, uint32_t cmd, uint32_t arg, uint16_t block_size,
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uint16_t nb_block, bool access_block);
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/**
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* \brief Send a command to stop an ADTC command on the selected slot.
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*
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* \param[in] cmd Command definition
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* \param[in] arg Argument of the command
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*
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* \return true if success, otherwise false
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*/
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bool _mci_sync_adtc_stop(struct _mci_sync_device *const mci_dev, uint32_t cmd, uint32_t arg);
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/**
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* \brief Read a word on the line.
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*
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* \param[in] value Pointer on a word to fill.
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*
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* \return true if success, otherwise false
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*/
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bool _mci_sync_read_word(struct _mci_sync_device *const mci_dev, uint32_t *value);
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/**
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* \brief Write a word on the line
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*
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* \param[in] value Word to send
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*
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* \return true if success, otherwise false
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*/
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bool _mci_sync_write_word(struct _mci_sync_device *const mci_dev, uint32_t value);
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/**
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* \brief Start a read blocks transfer on the line
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* Note: The driver will use the DMA available to speed up the transfer.
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*
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* \param[in] dst Pointer on the buffer to fill
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* \param[in] nb_block Number of block to transfer
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*
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* \return true if started, otherwise false
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*/
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bool _mci_sync_start_read_blocks(struct _mci_sync_device *const mci_dev, void *dst, uint16_t nb_block);
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/**
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* \brief Start a write blocks transfer on the line
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* Note: The driver will use the DMA available to speed up the transfer.
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*
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* \param[in] src Pointer on the buffer to send
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* \param[in] nb_block Number of block to transfer
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*
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* \return true if started, otherwise false
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*/
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bool _mci_sync_start_write_blocks(struct _mci_sync_device *const mci_dev, const void *src, uint16_t nb_block);
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/**
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* \brief Wait the end of transfer initiated by mci_start_read_blocks()
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*
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* \return true if success, otherwise false
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*/
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bool _mci_sync_wait_end_of_read_blocks(struct _mci_sync_device *const mci_dev);
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/**
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* \brief Wait the end of transfer initiated by mci_start_write_blocks()
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*
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* \return true if success, otherwise false
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*/
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bool _mci_sync_wait_end_of_write_blocks(struct _mci_sync_device *const mci_dev);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _HPL_MCI_H_INCLUDED */
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