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Mfp4: Remove mci_device.c. It should have been removed when it was
merged ito sd-card.c, but this is an imperfect world.
This commit is contained in:
Warner Losh
parent
e2302bcc3d
commit
f358fbffa9
1 changed files with 0 additions and 575 deletions
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@ -1,575 +0,0 @@
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/*-
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* Copyright (c) 2006 M. Warner Losh. All rights reserved.
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*
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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
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* are met:
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* 1. 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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* 2. 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software is derived from software provide by Kwikbyte who specifically
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* disclaimed copyright on the code.
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*
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* $FreeBSD$
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*/
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//*----------------------------------------------------------------------------
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//* ATMEL Microcontroller Software Support - ROUSSET -
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//*----------------------------------------------------------------------------
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//* The software is delivered "AS IS" without warranty or condition of any
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//* kind, either express, implied or statutory. This includes without
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//* limitation any warranty or condition with respect to merchantability or
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//* fitness for any particular purpose, or against the infringements of
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//* intellectual property rights of others.
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//*----------------------------------------------------------------------------
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//* File Name : mci_device.c
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//* Object : TEST DataFlash Functions
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//* Creation : FB 26/11/2002
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//*
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//*----------------------------------------------------------------------------
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#include "at91rm9200.h"
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#include "lib_AT91RM9200.h"
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#include "mci_device.h"
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#include "lib.h"
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#define MMC_SUPPORT 0
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_SendCommand
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//* \brief Generic function to send a command to the MMC or SDCard
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//*----------------------------------------------------------------------------
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static AT91S_MCIDeviceStatus
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AT91F_MCI_SendCommand(
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unsigned int Cmd,
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unsigned int Arg)
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{
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unsigned int error,status;
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AT91C_BASE_MCI->MCI_ARGR = Arg;
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AT91C_BASE_MCI->MCI_CMDR = Cmd;
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// printf("CMDR %x ARG %x\n", Cmd, Arg);
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// wait for CMDRDY Status flag to read the response
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do
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{
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status = AT91C_BASE_MCI->MCI_SR;
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} while( !(status & AT91C_MCI_CMDRDY) );
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// Test error ==> if crc error and response R3 ==> don't check error
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error = (AT91C_BASE_MCI->MCI_SR) & AT91C_MCI_SR_ERROR;
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if (error != 0 ) {
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// if the command is SEND_OP_COND the CRC error flag is
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// always present (cf : R3 response)
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if ((Cmd != SDCARD_APP_OP_COND_CMD) &&
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(Cmd != MMC_SEND_OP_COND_CMD))
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return ((AT91C_BASE_MCI->MCI_SR) & AT91C_MCI_SR_ERROR);
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if (error != AT91C_MCI_RCRCE)
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return ((AT91C_BASE_MCI->MCI_SR) & AT91C_MCI_SR_ERROR);
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}
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return AT91C_CMD_SEND_OK;
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_SDCard_SendAppCommand
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//* \brief Specific function to send a specific command to the SDCard
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//*----------------------------------------------------------------------------
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static AT91S_MCIDeviceStatus
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AT91F_MCI_SDCard_SendAppCommand(
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AT91PS_MciDevice pMCI_Device,
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unsigned int Cmd_App,
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unsigned int Arg)
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{
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unsigned int status;
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// Send the CMD55 for application specific command
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AT91C_BASE_MCI->MCI_ARGR = (pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address << 16 );
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AT91C_BASE_MCI->MCI_CMDR = APP_CMD;
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// wait for CMDRDY Status flag to read the response
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do
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{
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status = AT91C_BASE_MCI->MCI_SR;
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}
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while( !(status & AT91C_MCI_CMDRDY) );
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// if an error occurs
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if (((AT91C_BASE_MCI->MCI_SR) & AT91C_MCI_SR_ERROR) != 0 )
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return ((AT91C_BASE_MCI->MCI_SR) & AT91C_MCI_SR_ERROR);
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return(AT91F_MCI_SendCommand(Cmd_App,Arg));
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_GetStatus
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//* \brief Addressed card sends its status register
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//*----------------------------------------------------------------------------
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static AT91S_MCIDeviceStatus
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AT91F_MCI_GetStatus(unsigned int relative_card_address)
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{
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if (AT91F_MCI_SendCommand(SEND_STATUS_CMD,
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relative_card_address <<16) == AT91C_CMD_SEND_OK)
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return (AT91C_BASE_MCI->MCI_RSPR[0]);
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return AT91C_CMD_SEND_ERROR;
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_Device_Handler
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//* \brief MCI C interrupt handler
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//*----------------------------------------------------------------------------
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void
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AT91F_MCI_Device_Handler(
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AT91PS_MciDevice pMCI_Device,
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unsigned int status)
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{
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// If End of Tx Buffer Empty interrupt occurred
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if (pMCI_Device->pMCI_DeviceDesc->state == AT91C_MCI_TX_SINGLE_BLOCK && status & AT91C_MCI_TXBUFE) {
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AT91C_BASE_MCI->MCI_IDR = AT91C_MCI_TXBUFE;
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AT91C_BASE_PDC_MCI->PDC_PTCR = AT91C_PDC_TXTDIS;
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pMCI_Device->pMCI_DeviceDesc->state = AT91C_MCI_IDLE;
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} // End of if AT91C_MCI_TXBUFF
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// If End of Rx Buffer Full interrupt occurred
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if (pMCI_Device->pMCI_DeviceDesc->state == AT91C_MCI_RX_SINGLE_BLOCK && status & AT91C_MCI_RXBUFF) {
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AT91C_BASE_MCI->MCI_IDR = AT91C_MCI_RXBUFF;
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AT91C_BASE_PDC_MCI->PDC_PTCR = AT91C_PDC_RXTDIS;
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pMCI_Device->pMCI_DeviceDesc->state = AT91C_MCI_IDLE;
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} // End of if AT91C_MCI_RXBUFF
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_ReadBlock
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//* \brief Read an ENTIRE block or PARTIAL block
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//*----------------------------------------------------------------------------
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AT91S_MCIDeviceStatus
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AT91F_MCI_ReadBlock(
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AT91PS_MciDevice pMCI_Device,
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int src,
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unsigned int *dataBuffer,
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int sizeToRead)
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{
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unsigned log2sl = pMCI_Device->pMCI_DeviceFeatures->READ_BL_LEN;
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unsigned sectorLength = 1 << log2sl;
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///////////////////////////////////////////////////////////////////////
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if (pMCI_Device->pMCI_DeviceDesc->state != AT91C_MCI_IDLE)
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return AT91C_READ_ERROR;
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if ((AT91F_MCI_GetStatus(
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pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address) & AT91C_SR_READY_FOR_DATA) == 0)
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return AT91C_READ_ERROR;
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///////////////////////////////////////////////////////////////////////
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// Init Mode Register
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AT91C_BASE_MCI->MCI_MR |= ((sectorLength << 16) | AT91C_MCI_PDCMODE);
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sizeToRead = sizeToRead / 4;
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AT91C_BASE_PDC_MCI->PDC_PTCR = (AT91C_PDC_TXTDIS | AT91C_PDC_RXTDIS);
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AT91C_BASE_PDC_MCI->PDC_RPR = (unsigned int)dataBuffer;
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AT91C_BASE_PDC_MCI->PDC_RCR = sizeToRead;
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// Send the Read single block command
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if (AT91F_MCI_SendCommand(READ_SINGLE_BLOCK_CMD, src) != AT91C_CMD_SEND_OK)
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return AT91C_READ_ERROR;
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pMCI_Device->pMCI_DeviceDesc->state = AT91C_MCI_RX_SINGLE_BLOCK;
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// Enable AT91C_MCI_RXBUFF Interrupt
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AT91C_BASE_MCI->MCI_IER = AT91C_MCI_RXBUFF;
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// (PDC) Receiver Transfer Enable
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AT91C_BASE_PDC_MCI->PDC_PTCR = AT91C_PDC_RXTEN;
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return AT91C_READ_OK;
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}
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#if MMC_SUPPORT
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_WriteBlock
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//* \brief Write an ENTIRE block but not always PARTIAL block !!!
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//*----------------------------------------------------------------------------
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AT91S_MCIDeviceStatus
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AT91F_MCI_WriteBlock(
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AT91PS_MciDevice pMCI_Device,
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int dest,
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unsigned int *dataBuffer,
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int sizeToWrite )
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{
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unsigned log2sl = pMCI_Device->pMCI_DeviceFeatures->WRITE_BL_LEN;
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unsigned sectorLength = 1 << log2sl;
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///////////////////////////////////////////////////////////////////////
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if( pMCI_Device->pMCI_DeviceDesc->state != AT91C_MCI_IDLE)
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return AT91C_WRITE_ERROR;
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if( (AT91F_MCI_GetStatus(pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address) & AT91C_SR_READY_FOR_DATA) == 0)
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return AT91C_WRITE_ERROR;
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if ((dest + sizeToWrite) > pMCI_Device->pMCI_DeviceFeatures->Memory_Capacity)
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return AT91C_WRITE_ERROR;
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// If source does not fit a begin of a block
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if ( dest % sectorLength != 0 )
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return AT91C_WRITE_ERROR;
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// Test if the MMC supports Partial Write Block
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if ((sizeToWrite < sectorLength)
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&& (pMCI_Device->pMCI_DeviceFeatures->Write_Partial == 0x00))
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return AT91C_WRITE_ERROR;
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if (sizeToWrite > sectorLength)
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return AT91C_WRITE_ERROR;
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///////////////////////////////////////////////////////////////////////
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// Init Mode Register
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AT91C_BASE_MCI->MCI_MR |= ((1 << pMCI_Device->pMCI_DeviceFeatures->WRITE_BL_LEN) << 16) | AT91C_MCI_PDCMODE;
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sizeToWrite = sizeToWrite / 4;
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// Init PDC for write sequence
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AT91C_BASE_PDC_MCI->PDC_PTCR = (AT91C_PDC_TXTDIS | AT91C_PDC_RXTDIS);
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AT91C_BASE_PDC_MCI->PDC_TPR = (unsigned int) dataBuffer;
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AT91C_BASE_PDC_MCI->PDC_TCR = sizeToWrite;
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// Send the write single block command
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if ( AT91F_MCI_SendCommand(WRITE_BLOCK_CMD, dest) != AT91C_CMD_SEND_OK)
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return AT91C_WRITE_ERROR;
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pMCI_Device->pMCI_DeviceDesc->state = AT91C_MCI_TX_SINGLE_BLOCK;
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// Enable AT91C_MCI_TXBUFE Interrupt
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AT91C_BASE_MCI->MCI_IER = AT91C_MCI_TXBUFE;
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// Enables TX for PDC transfert requests
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AT91C_BASE_PDC_MCI->PDC_PTCR = AT91C_PDC_TXTEN;
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return AT91C_WRITE_OK;
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_MMC_SelectCard
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//* \brief Toggles a card between the Stand_by and Transfer states or between Programming and Disconnect states
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//*----------------------------------------------------------------------------
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AT91S_MCIDeviceStatus
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AT91F_MCI_MMC_SelectCard(AT91PS_MciDevice pMCI_Device, unsigned int relative_card_address)
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{
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int status;
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//* Check if the MMC card chosen is already the selected one
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status = AT91F_MCI_GetStatus(relative_card_address);
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if (status < 0)
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return AT91C_CARD_SELECTED_ERROR;
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if ((status & AT91C_SR_CARD_SELECTED) == AT91C_SR_CARD_SELECTED)
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return AT91C_CARD_SELECTED_OK;
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//* Search for the MMC Card to be selected,
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// status = the Corresponding Device Number
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status = 0;
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while( (pMCI_Device->pMCI_DeviceFeatures[status].Relative_Card_Address != relative_card_address)
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&& (status < AT91C_MAX_MCI_CARDS) )
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status++;
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if (status > AT91C_MAX_MCI_CARDS)
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return AT91C_CARD_SELECTED_ERROR;
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if (AT91F_MCI_SendCommand(SEL_DESEL_CARD_CMD,
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pMCI_Device->pMCI_DeviceFeatures[status].Relative_Card_Address << 16) == AT91C_CMD_SEND_OK)
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return AT91C_CARD_SELECTED_OK;
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return AT91C_CARD_SELECTED_ERROR;
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}
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#endif
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_GetCSD
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//* \brief Asks to the specified card to send its CSD
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//*----------------------------------------------------------------------------
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static AT91S_MCIDeviceStatus
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AT91F_MCI_GetCSD(unsigned int relative_card_address , unsigned int * response)
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{
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if(AT91F_MCI_SendCommand(SEND_CSD_CMD,
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(relative_card_address << 16)) != AT91C_CMD_SEND_OK)
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return AT91C_CMD_SEND_ERROR;
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response[0] = AT91C_BASE_MCI->MCI_RSPR[0];
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response[1] = AT91C_BASE_MCI->MCI_RSPR[1];
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response[2] = AT91C_BASE_MCI->MCI_RSPR[2];
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response[3] = AT91C_BASE_MCI->MCI_RSPR[3];
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return AT91C_CMD_SEND_OK;
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_SetBlocklength
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//* \brief Select a block length for all following block commands (R/W)
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//*----------------------------------------------------------------------------
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AT91S_MCIDeviceStatus
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AT91F_MCI_SetBlocklength(unsigned int length)
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{
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return( AT91F_MCI_SendCommand(SET_BLOCKLEN_CMD, length) );
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}
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#if MMC_SUPPORT
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_MMC_GetAllOCR
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//* \brief Asks to all cards to send their operations conditions
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//*----------------------------------------------------------------------------
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static AT91S_MCIDeviceStatus
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AT91F_MCI_MMC_GetAllOCR()
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{
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unsigned int response =0x0;
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while(1) {
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response = AT91F_MCI_SendCommand(MMC_SEND_OP_COND_CMD,
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AT91C_MMC_HOST_VOLTAGE_RANGE);
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if (response != AT91C_CMD_SEND_OK)
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return AT91C_INIT_ERROR;
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response = AT91C_BASE_MCI->MCI_RSPR[0];
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if ( (response & AT91C_CARD_POWER_UP_BUSY) == AT91C_CARD_POWER_UP_BUSY)
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return(response);
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}
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_MMC_GetAllCID
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//* \brief Asks to the MMC on the chosen slot to send its CID
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//*----------------------------------------------------------------------------
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static AT91S_MCIDeviceStatus
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AT91F_MCI_MMC_GetAllCID(AT91PS_MciDevice pMCI_Device, unsigned int *response)
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{
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int Nb_Cards_Found=-1;
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while (1) {
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if(AT91F_MCI_SendCommand(MMC_ALL_SEND_CID_CMD,
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AT91C_NO_ARGUMENT) != AT91C_CMD_SEND_OK)
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return Nb_Cards_Found;
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else {
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Nb_Cards_Found = 0;
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//* Assignation of the relative address to the MMC CARD
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pMCI_Device->pMCI_DeviceFeatures[Nb_Cards_Found].Relative_Card_Address = Nb_Cards_Found + AT91C_FIRST_RCA;
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//* Set the insert flag
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pMCI_Device->pMCI_DeviceFeatures[Nb_Cards_Found].Card_Inserted = AT91C_MMC_CARD_INSERTED;
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if (AT91F_MCI_SendCommand(
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MMC_SET_RELATIVE_ADDR_CMD,
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(Nb_Cards_Found + AT91C_FIRST_RCA) << 16) != AT91C_CMD_SEND_OK)
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return AT91C_CMD_SEND_ERROR;
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//* If no error during assignation address ==> Increment Nb_cards_Found
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Nb_Cards_Found++ ;
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}
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}
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_MCI_MMC_Init
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//* \brief Return the MMC initialisation status
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//*----------------------------------------------------------------------------
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AT91S_MCIDeviceStatus
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AT91F_MCI_MMC_Init (AT91PS_MciDevice pMCI_Device)
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{
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unsigned int tab_response[4];
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unsigned int mult,blocknr;
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unsigned int i,Nb_Cards_Found=0;
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AT91PS_MciDeviceFeatures f;
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//* Resets all MMC Cards in Idle state
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AT91F_MCI_SendCommand(MMC_GO_IDLE_STATE_CMD, AT91C_NO_ARGUMENT);
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if (AT91F_MCI_MMC_GetAllOCR(pMCI_Device) == AT91C_INIT_ERROR)
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return AT91C_INIT_ERROR;
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Nb_Cards_Found = AT91F_MCI_MMC_GetAllCID(pMCI_Device,tab_response);
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if (Nb_Cards_Found == AT91C_CMD_SEND_ERROR)
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return AT91C_INIT_ERROR;
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//* Set the Mode Register
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AT91C_BASE_MCI->MCI_MR = AT91C_MCI_MR_PDCMODE;
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for(i = 0; i < Nb_Cards_Found; i++) {
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f = pMCI_Device->pMCI_DeviceFeatures + i;
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if (AT91F_MCI_GetCSD(f->Relative_Card_Address, tab_response) !=
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AT91C_CMD_SEND_OK) {
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||||
f->Relative_Card_Address = 0;
|
||||
continue;
|
||||
}
|
||||
f->READ_BL_LEN = ((tab_response[1] >> CSD_1_RD_B_LEN_S) & CSD_1_RD_B_LEN_M);
|
||||
f->WRITE_BL_LEN = ((tab_response[3] >> CSD_3_WBLEN_S) & CSD_3_WBLEN_M );
|
||||
f->Sector_Size = 1 + ((tab_response[2] >> CSD_2_v22_SECT_SIZE_S) & CSD_2_v22_SECT_SIZE_M );
|
||||
f->Read_Partial = (tab_response[1] >> CSD_1_RD_B_PAR_S) & CSD_1_RD_B_PAR_M;
|
||||
f->Write_Partial = (tab_response[3] >> CSD_3_WBLOCK_P_S) & CSD_3_WBLOCK_P_M;
|
||||
|
||||
// None in MMC specification version 2.2
|
||||
f->Erase_Block_Enable = 0;
|
||||
f->Read_Block_Misalignment = (tab_response[1] >> CSD_1_RD_B_MIS_S) & CSD_1_RD_B_MIS_M;
|
||||
f->Write_Block_Misalignment = (tab_response[1] >> CSD_1_WR_B_MIS_S) & CSD_1_WR_B_MIS_M;
|
||||
|
||||
//// Compute Memory Capacity
|
||||
// compute MULT
|
||||
mult = 1 << ( ((tab_response[2] >> CSD_2_C_SIZE_M_S) & CSD_2_C_SIZE_M_M) + 2 );
|
||||
// compute MSB of C_SIZE
|
||||
blocknr = ((tab_response[1] >> CSD_1_CSIZE_H_S) & CSD_1_CSIZE_H_M) << 2;
|
||||
// compute MULT * (LSB of C-SIZE + MSB already computed + 1) = BLOCKNR
|
||||
blocknr = mult * ( ( blocknr + ( (tab_response[2] >> CSD_2_CSIZE_L_S) & CSD_2_CSIZE_L_M) ) + 1 );
|
||||
f->Memory_Capacity = (1 << f->READ_BL_LEN) * blocknr;
|
||||
//// End of Compute Memory Capacity
|
||||
}
|
||||
// XXX warner hacked this
|
||||
return AT91C_INIT_OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
//*----------------------------------------------------------------------------
|
||||
//* \fn AT91F_MCI_SDCard_GetOCR
|
||||
//* \brief Asks to all cards to send their operations conditions
|
||||
//*----------------------------------------------------------------------------
|
||||
static AT91S_MCIDeviceStatus
|
||||
AT91F_MCI_SDCard_GetOCR (AT91PS_MciDevice pMCI_Device)
|
||||
{
|
||||
unsigned int response =0x0;
|
||||
|
||||
// The RCA to be used for CMD55 in Idle state shall be the card's default RCA=0x0000.
|
||||
pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address = 0x0;
|
||||
|
||||
while( (response & AT91C_CARD_POWER_UP_BUSY) != AT91C_CARD_POWER_UP_BUSY ) {
|
||||
response = AT91F_MCI_SDCard_SendAppCommand(pMCI_Device,
|
||||
SDCARD_APP_OP_COND_CMD,
|
||||
AT91C_MMC_HOST_VOLTAGE_RANGE);
|
||||
if (response != AT91C_CMD_SEND_OK)
|
||||
return AT91C_INIT_ERROR;
|
||||
response = AT91C_BASE_MCI->MCI_RSPR[0];
|
||||
}
|
||||
|
||||
return(AT91C_BASE_MCI->MCI_RSPR[0]);
|
||||
}
|
||||
|
||||
//*----------------------------------------------------------------------------
|
||||
//* \fn AT91F_MCI_SDCard_GetCID
|
||||
//* \brief Asks to the SDCard on the chosen slot to send its CID
|
||||
//*----------------------------------------------------------------------------
|
||||
static AT91S_MCIDeviceStatus
|
||||
AT91F_MCI_SDCard_GetCID(unsigned int *response)
|
||||
{
|
||||
if (AT91F_MCI_SendCommand(ALL_SEND_CID_CMD,
|
||||
AT91C_NO_ARGUMENT) != AT91C_CMD_SEND_OK)
|
||||
return AT91C_CMD_SEND_ERROR;
|
||||
|
||||
response[0] = AT91C_BASE_MCI->MCI_RSPR[0];
|
||||
response[1] = AT91C_BASE_MCI->MCI_RSPR[1];
|
||||
response[2] = AT91C_BASE_MCI->MCI_RSPR[2];
|
||||
response[3] = AT91C_BASE_MCI->MCI_RSPR[3];
|
||||
|
||||
return AT91C_CMD_SEND_OK;
|
||||
}
|
||||
|
||||
//*----------------------------------------------------------------------------
|
||||
//* \fn AT91F_MCI_SDCard_SetBusWidth
|
||||
//* \brief Set bus width for SDCard
|
||||
//*----------------------------------------------------------------------------
|
||||
static AT91S_MCIDeviceStatus
|
||||
AT91F_MCI_SDCard_SetBusWidth(AT91PS_MciDevice pMCI_Device)
|
||||
{
|
||||
volatile int ret_value;
|
||||
char bus_width;
|
||||
|
||||
do {
|
||||
ret_value =AT91F_MCI_GetStatus(pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address);
|
||||
}
|
||||
while((ret_value > 0) && ((ret_value & AT91C_SR_READY_FOR_DATA) == 0));
|
||||
|
||||
// Select Card
|
||||
AT91F_MCI_SendCommand(SEL_DESEL_CARD_CMD,
|
||||
(pMCI_Device->pMCI_DeviceFeatures->Relative_Card_Address)<<16);
|
||||
|
||||
// Set bus width for Sdcard
|
||||
if (pMCI_Device->pMCI_DeviceDesc->SDCard_bus_width == AT91C_MCI_SCDBUS)
|
||||
bus_width = AT91C_BUS_WIDTH_4BITS;
|
||||
else
|
||||
bus_width = AT91C_BUS_WIDTH_1BIT;
|
||||
|
||||
if (AT91F_MCI_SDCard_SendAppCommand(pMCI_Device,
|
||||
SDCARD_SET_BUS_WIDTH_CMD,bus_width) != AT91C_CMD_SEND_OK)
|
||||
return AT91C_CMD_SEND_ERROR;
|
||||
|
||||
return AT91C_CMD_SEND_OK;
|
||||
}
|
||||
|
||||
//*----------------------------------------------------------------------------
|
||||
//* \fn AT91F_MCI_SDCard_Init
|
||||
//* \brief Return the SDCard initialisation status
|
||||
//*----------------------------------------------------------------------------
|
||||
AT91S_MCIDeviceStatus
|
||||
AT91F_MCI_SDCard_Init (AT91PS_MciDevice pMCI_Device)
|
||||
{
|
||||
unsigned int tab_response[4];
|
||||
unsigned int mult,blocknr;
|
||||
AT91PS_MciDeviceFeatures f;
|
||||
|
||||
AT91F_MCI_SendCommand(GO_IDLE_STATE_CMD, AT91C_NO_ARGUMENT);
|
||||
|
||||
if (AT91F_MCI_SDCard_GetOCR(pMCI_Device) == AT91C_INIT_ERROR)
|
||||
return AT91C_INIT_ERROR;
|
||||
|
||||
f = pMCI_Device->pMCI_DeviceFeatures;
|
||||
if (AT91F_MCI_SDCard_GetCID(tab_response) != AT91C_CMD_SEND_OK)
|
||||
return AT91C_INIT_ERROR;
|
||||
f->Card_Inserted = AT91C_SD_CARD_INSERTED;
|
||||
if (AT91F_MCI_SendCommand(SET_RELATIVE_ADDR_CMD, 0) !=
|
||||
AT91C_CMD_SEND_OK)
|
||||
return AT91C_INIT_ERROR;
|
||||
f->Relative_Card_Address = (AT91C_BASE_MCI->MCI_RSPR[0] >> 16);
|
||||
if (AT91F_MCI_GetCSD(f->Relative_Card_Address,tab_response)
|
||||
!= AT91C_CMD_SEND_OK)
|
||||
return AT91C_INIT_ERROR;
|
||||
f->READ_BL_LEN = (tab_response[1] >> CSD_1_RD_B_LEN_S) &
|
||||
CSD_1_RD_B_LEN_M;
|
||||
f->WRITE_BL_LEN = (tab_response[3] >> CSD_3_WBLEN_S) &
|
||||
CSD_3_WBLEN_M;
|
||||
f->Sector_Size = 1 + ((tab_response[2] >> CSD_2_v21_SECT_SIZE_S) &
|
||||
CSD_2_v21_SECT_SIZE_M);
|
||||
f->Read_Partial = (tab_response[1] >> CSD_1_RD_B_PAR_S) &
|
||||
CSD_1_RD_B_PAR_M;
|
||||
f->Write_Partial = (tab_response[3] >> CSD_3_WBLOCK_P_S) &
|
||||
CSD_3_WBLOCK_P_M;
|
||||
f->Erase_Block_Enable = (tab_response[2] >> CSD_2_v21_ER_BLEN_EN_S) &
|
||||
CSD_2_v21_ER_BLEN_EN_M;
|
||||
f->Read_Block_Misalignment = (tab_response[1] >> CSD_1_RD_B_MIS_S) &
|
||||
CSD_1_RD_B_MIS_M;
|
||||
f->Write_Block_Misalignment = (tab_response[1] >> CSD_1_WR_B_MIS_S) &
|
||||
CSD_1_WR_B_MIS_M;
|
||||
//// Compute Memory Capacity
|
||||
// compute MULT
|
||||
mult = 1 << ( ((tab_response[2] >> CSD_2_C_SIZE_M_S) &
|
||||
CSD_2_C_SIZE_M_M) + 2 );
|
||||
// compute MSB of C_SIZE
|
||||
blocknr = ((tab_response[1] >> CSD_1_CSIZE_H_S) &
|
||||
CSD_1_CSIZE_H_M) << 2;
|
||||
// compute MULT * (LSB of C-SIZE + MSB already computed + 1) = BLOCKNR
|
||||
blocknr = mult * ((blocknr + ((tab_response[2] >> CSD_2_CSIZE_L_S) &
|
||||
CSD_2_CSIZE_L_M)) + 1);
|
||||
f->Memory_Capacity = (1 << f->READ_BL_LEN) * blocknr;
|
||||
//// End of Compute Memory Capacity
|
||||
if (AT91F_MCI_SDCard_SetBusWidth(pMCI_Device) != AT91C_CMD_SEND_OK)
|
||||
return AT91C_INIT_ERROR;
|
||||
if (AT91F_MCI_SetBlocklength(1 << f->READ_BL_LEN) != AT91C_CMD_SEND_OK)
|
||||
return AT91C_INIT_ERROR;
|
||||
printf("Found SD card %u bytes\n", f->Memory_Capacity);
|
||||
return AT91C_INIT_OK;
|
||||
}
|
||||
Loading…
Reference in a new issue