237 lines
6.3 KiB
C
237 lines
6.3 KiB
C
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/*
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Copyright 2007, Freie Universitaet Berlin. All rights reserved.
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These sources were developed at the Freie Universität Berlin, Computer
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Systems and Telematics group.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of Freie Universitaet Berlin (FUB) nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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This software is provided by FUB and the contributors on an "as is"
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basis, without any representations or warranties of any kind, express
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or implied including, but not limited to, representations or
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warranties of non-infringement, merchantability or fitness for a
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particular purpose. In no event shall FUB or contributors be liable
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for any direct, indirect, incidental, special, exemplary, or
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consequential damages (including, but not limited to, procurement of
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substitute goods or services; loss of use, data, or profits; or
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business interruption) however caused and on any theory of liability,
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whether in contract, strict liability, or tort (including negligence
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or otherwise) arising in any way out of the use of this software, even
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if advised of the possibility of such damage.
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This implementation was developed by the CST group at the FUB.
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For documentation and questions please use the web site
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http://scatterweb.mi.fu-berlin.de and the mailinglist
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scatterweb@lists.spline.inf.fu-berlin.de (subscription via the Website).
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Berlin, 2007
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*/
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/**
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* @file ScatterWeb.Sd.internals.h
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* @ingroup libsd
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* @brief MMC-/SD-Card library
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*
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* @author Michael Baar <baar@inf.fu-berlin.de>
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* @version $Revision: 1.2 $
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*
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* Header file containing private declarations used MMC-/SD-Card library.
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*
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* $Id: sd_internals.h,v 1.2 2008/03/28 15:58:44 nvt-se Exp $
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*/
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#ifndef SD_INT_H_
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#define SD_INT_H_
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#include <string.h>
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#include "sd_platform.h"
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#define RETF(x) if( ! x ) return FALSE;
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/**
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* @name SD Card SPI responses
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*/
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struct sd_response_r1 {
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uint8_t in_idle_state:1;
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uint8_t erase_reset:1;
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uint8_t illegal_cmd:1;
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uint8_t crc_err:1;
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uint8_t erase_seq_err:1;
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uint8_t address_err:1;
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uint8_t param_err:1;
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uint8_t start_bit:1;
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};
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struct sd_response_r2 {
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uint16_t in_idle_state:1;
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uint16_t erase_reset:1;
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uint16_t illegal_cmd:1;
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uint16_t crc_err:1;
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uint16_t erase_seq_err:1;
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uint16_t address_err:1;
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uint16_t param_err:1;
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uint16_t start_bit:1;
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uint16_t card_locked:1;
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uint16_t write_failed:1;
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uint16_t unspecified_err:1;
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uint16_t controller_err:1;
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uint16_t ecc_failed:1;
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uint16_t protect_violation:1;
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uint16_t erase_param:1;
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uint16_t out_of_range:1;
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};
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#ifdef __TI_COMPILER_VERSION__
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#pragma pack(1)
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#endif
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struct sd_response_r3 {
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struct sd_response_r1 r1;
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#ifdef __GNUC__
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__attribute__ ((packed))
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#endif
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uint32_t ocr;
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};
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#ifdef __TI_COMPILER_VERSION__
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#pragma pack()
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#endif
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struct sd_read_error_token {
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uint8_t unspecified_err:1;
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uint8_t controller_err:1;
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uint8_t ecc_failed:1;
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uint8_t out_of_range:1;
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uint8_t card_locked:1;
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uint8_t:3;
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};
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struct sd_data_error_token {
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uint8_t error:1;
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uint8_t cc_error:1;
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uint8_t ecc_error:1;
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uint8_t out_of_range:1;
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uint8_t:4; // always 0 (-> SD_DATA_ERROR_TOKEN_MASK)
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};
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typedef struct sd_read_error_token sd_read_error_token_t;
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typedef struct sd_data_error_token sd_data_error_t;
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#define SD_DATA_ERROR_TOKEN_MASK 0x0F ///< mask for error token
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#define SD_R1_ERROR_MASK 0x7C ///< mask for error bits in r1 response
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///@}
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/**
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* @name Private interface
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*/
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/// Reset card
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int _sd_reset(struct sd_response_r3 *pOpCond);
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/// Send command and read response
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bool _sd_send_cmd(const uint8_t command,
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const int response_size,
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const void *pArg, void (*const pResponse)
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);
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/// Wait for card to leave idle mode
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bool _sd_wait_standby(struct sd_response_r3 *pOpCond);
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/// Read card register
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uint16_t _sd_read_register(void (*const pBuffer), const uint8_t cmd,
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const uint16_t size);
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/// Begin block read operation
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bool _sd_read_start(const uint8_t cmd, const uint32_t address);
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/// Cancel block read operation
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void _sd_read_stop(const uint16_t count);
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#if SD_WRITE
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enum sd_write_ret _sd_write_block(const uint32_t * pAddress,
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const void *pBuffer, int increment);
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#endif
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#if SD_CACHE
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void _sd_cache_init();
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void _sd_cache_flush();
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#endif
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///@}
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#define SD_TOKEN_READ 0xFE
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#define SD_TOKEN_WRITE 0xFE
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#define SD_TOKEN_ZP 0xFF
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#define SD_TIMEOUT_IDLE 1000 // # of poll-cycles for reset procedure (takes some time)
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#define SD_TIMEOUT_READ 20000
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#define SD_TIMEOUT_NCR 8 // 8-64 cycles
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#define SD_RESET_RETRY_COUNT 4
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#define SD_OCR_BUSY(ocr) ((ocr & 0x80000000) == 0)
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#define SD_V_MASK 0x003E0000 // 3,4 - 2,9 V
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#define SD_HCR_BIT 0x40000000
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#define SD_RESPONSE_SIZE_R1 1
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#define SD_RESPONSE_SIZE_R2 2
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#define SD_RESPONSE_SIZE_R3 5
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/**
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* @name Command classes
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* @{
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*/
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#define SD_CCC_BASIC BIT0
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#define SD_CCC_BLOCK_READ BIT2
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#define SD_CCC_BLOCK_WRITE BIT4
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#define SD_CCC_APP_SPECIFIC BIT8
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#if SD_WRITE
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#define SD_DEFAULT_MINCCC (SD_CCC_BASIC | \
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SD_CCC_BLOCK_READ | \
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SD_CCC_APP_SPECIFIC | \
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SD_CCC_BLOCK_WRITE)
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#else
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#define SD_DEFAULT_MINCCC (SD_CCC_BASIC | \
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SD_CCC_BLOCK_READ | \
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SD_CCC_APP_SPECIFIC)
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#endif
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//@}
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/**
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* @name Commands
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* @{
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*/
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#define SD_CMD_GO_IDLE_STATE 0 // R1 "reset command"
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#define SD_CMD_SEND_OP_COND 1 // R1 (MMC only!)
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#define SD_CMD_SEND_CSD 9 // R1
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#define SD_CMD_SEND_CID 10 // R1
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#define SD_CMD_STOP_TRANSMISSION 12 // R1b
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#define SD_CMD_SEND_STATUS 13 // R2
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#define SD_CMD_SET_BLOCKLENGTH 16
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#define SD_CMD_READ_SINGLE_BLOCK 17 // R1
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#define SD_CMD_READ_MULTI_BLOCK 18 // R1
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#define SD_CMD_WRITE_SINGLE_BLOCK 24 // R1
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#define SD_CMD_ERASE_WR_BLK_START_ADDR 32 // R1
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#define SD_CMD_ERASE_WR_BLK_END_ADDR 33 // R1
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#define SD_CMD_ERASE 38 // R1b
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#define SD_CMD_APP_SECIFIC_CMD 55
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#define SD_CMD_READ_OCR 58 // R3
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#define SD_ACMD_SEND_OP_COND 41 // R1
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//@}
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#endif /*SD_INT_H_ */
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