Difference between revisions of "Unit MMC"

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<pre style="border: 0; padding-bottom:0px;">function SDHCIHostNotification(SDHCI:PSDHCIHost; Callback:TSDHCINotification; Data:Pointer; Notification,Flags:LongWord):LongWord;</pre>
 
<pre style="border: 0; padding-bottom:0px;">function SDHCIHostNotification(SDHCI:PSDHCIHost; Callback:TSDHCINotification; Data:Pointer; Notification,Flags:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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'''MMC helper functions'''
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<pre style="border: 0; padding-bottom:0px;">function MMCGetCount:LongWord; inline;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the current MMC count</div>
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<pre style="border: 0; padding-bottom:0px;">function MMCDeviceCheck(MMC:PMMCDevice):PMMCDevice;</pre>
 +
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Check if the supplied MMC is in the MMC table</div>
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<pre style="border: 0; padding-bottom:0px;">function MMCIsSD(MMC:PMMCDevice):Boolean;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<pre style="border: 0; padding-bottom:0px;">function MMCGetCIDValue(MMC:PMMCDevice; Version,Value:LongWord):LongWord;</pre>
 +
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Extract a CID field value ?rom the 128 bit Card Identification register</div>
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<pre style="border: 0; padding-bottom:0px;">function MMCGetCSDValue(MMC:PMMCDevice; Value:LongWord):LongWord;</pre>
 +
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Extract a CSD field value ?rom the 128 bit Card Specific register</div>
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<pre style="border: 0; padding-bottom:0px;">function MMCGetExtendedCSDValue(MMC:PMMCDevice; Value:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Extract an Extended CSD field value ?rom the 512 byte Extended Card Specific register</div>
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<pre style="border: 0; padding-bottom:0px;">function MMCExtractBits(Buffer:Pointer; Start,Size:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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|-
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! '''Start'''
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| Start is the starting bit to extract
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|-
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! '''Size'''
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| Size is the number of bits to extract
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! '''Note'''
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| Start is the LSB so to extract 8 bits ?rom 127 to 120 then Start would be 120 and Size would be 8
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<pre style="border: 0; padding-bottom:0px;">function MMCExtractBitsEx(Buffer:Pointer; Length,Start,Size:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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! '''Length'''
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| Length is the size of the buffer in LongWords
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|-
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! '''Start'''
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| Start is the starting bit to extract
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|-
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! '''Size'''
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| Size is the number of bits to extract
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|-
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! '''Note'''
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| Start is the LSB so to extract 8 bits ?rom 127 to 120 then Start would be 120 and Size would be 8. For a 128 bit buffer (16 bytes) Length would be 4. For a 512 bit buffer (64 bytes) Length would be 16.
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<pre style="border: 0; padding-bottom:0px;">function MMCIsMultiCommand(Command:Word):Boolean;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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| None documented
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<pre style="border: 0; padding-bottom:0px;">function MMCStatusToString(Status:LongWord):String;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Translates an MMC status code into a string describing it</div>
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! '''Note'''
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| None documented
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<pre style="border: 0; padding-bottom:0px;">function MMCDeviceTypeToString(MMCType:LongWord):String;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<pre style="border: 0; padding-bottom:0px;">function MMCDeviceStateToString(MMCState:LongWord):String;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<pre style="border: 0; padding-bottom:0px;">procedure MMCLog(Level:LongWord; MMC:PMMCDevice; const AText:String);</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<pre style="border: 0; padding-bottom:0px;">procedure MMCLogInfo(MMC:PMMCDevice; const AText:String);</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<pre style="border: 0; padding-bottom:0px;">procedure MMCLogError(MMC:PMMCDevice; const AText:String);</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
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<pre style="border: 0; padding-bottom:0px;">procedure MMCLogDebug(MMC:PMMCDevice; const AText:String);</pre>
 
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Revision as of 06:28, 12 October 2016

Return to Unit Reference


Description

This unit implements the standards based part of the SD/MMC specification including the standard SDHCI interfaces.

For each platform a SDHCI module needs to be provided that implements the platform specific parts of the SDHCI interface.

This is similar in model to USB and other interfaces in Ultibo, where the generic interface unit requires a platform specific module to register with it in order to communicate with platform specific devices.

The SD/MMC interfaces are 2 tier (ie Host and Device) whereas the USB interface is 3 tier (Host, Device and Driver).

Constants

To be documented

Type definitions

To be documented

Public variables

To be documented

Function declarations


Initialization functions 

procedure MMCInit;
Description: To be documented
Note None documented 


function MMCStart:LongWord;
Description: To be documented
Note None documented 


function MMCStop:LongWord;
Description: To be documented
Note None documented 


procedure MMCAsyncStart(SDHCI:PSDHCIHost);
Description: To be documented
Note None documented


MMC functions 

function MMCDeviceReadBlocks(MMC:PMMCDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceWriteBlocks(MMC:PMMCDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceEraseBlocks(MMC:PMMCDevice; const Start,Count:Int64):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceGoIdle(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSetClock(MMC:PMMCDevice; Clock:LongWord):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSetBusWidth(MMC:PMMCDevice; Width:LongWord):LongWord;
Description: To be documented
Reference Section 3.4 of SD Host Controller Simplified Specification V3.0 partA2_300.pdf 


function MMCDeviceSetBlockLength(MMC:PMMCDevice; Length:LongWord):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSetBlockCount(MMC:PMMCDevice; Count:LongWord; Relative:Boolean):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSetDriverStage(MMC:PMMCDevice; DriverStage:LongWord):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSelectCard(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceDeselectCard(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSwitch(MMC:PMMCDevice; Setting,Index,Value:Byte):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSendCardStatus(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSendOperationCondition(MMC:PMMCDevice; Probe:Boolean):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSendCardSpecific(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceDecodeCardSpecific(MMC:PMMCDevice):LongWord;
Description: Given a 128-bit response, decode to our card CSD structure
Note None documented 


function MMCDeviceSendCardIdentification(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSendAllCardIdentification(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceDecodeCardIdentification(MMC:PMMCDevice):LongWord;
Description: Given a 128-bit response, decode to our card CID structure
Note None documented 


function MMCDeviceGetExtendedCardSpecific(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSendExtendedCardSpecific(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceDecodeExtendedCardSpecific(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSetRelativeAddress(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSPISetCRC(MMC:PMMCDevice; Enable:Boolean):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSPIReadOperationCondition(MMC:PMMCDevice; HighCapacity:Boolean):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceInsert(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceRemove(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceInitialize(MMC:PMMCDevice):LongWord;
Description: To be documented
Reference Section 3.6 of SD Host Controller Simplified Specification V3.0 partA2_300.pdf 


function MMCDeviceDeinitialize(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceGetCardDetect(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceGetWriteProtect(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSendCommand(MMC:PMMCDevice; Command:PMMCCommand):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceSetIOS(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceCreate:PMMCDevice;
Description: Create a new MMC entry
Return Pointer to new MMC entry or nil if MMC could not be created 


function MMCDeviceCreateEx(Size:LongWord):PMMCDevice;
Description: Create a new MMC entry
Size Size in bytes to allocate for new MMC (Including the MMC entry)
Return Pointer to new MMC entry or nil if MMC could not be created 


function MMCDeviceDestroy(MMC:PMMCDevice):LongWord;
Description: Destroy an existing MMC entry
Note None documented 


function MMCDeviceRegister(MMC:PMMCDevice):LongWord;
Description: Register a new MMC in the MMC table
Note None documented 


function MMCDeviceDeregister(MMC:PMMCDevice):LongWord;
Description: Deregister a MMC ?rom the MMC table
Note None documented 


function MMCDeviceFind(MMCId:LongWord):PMMCDevice;
Description: To be documented
Note None documented 


function MMCDeviceFindByName(const Name:String):PMMCDevice; inline;
Description: To be documented
Note None documented 


function MMCDeviceFindByDescription(const Description:String):PMMCDevice; inline;
Description: To be documented
Note None documented 


function MMCDeviceEnumerate(Callback:TMMCEnumerate; Data:Pointer):LongWord;
Description: To be documented
Note None documented 


function MMCDeviceNotification(MMC:PMMCDevice; Callback:TMMCNotification; Data:Pointer; Notification,Flags:LongWord):LongWord;
Description: To be documented
Note None documented


SD functions 

function SDDeviceSwitch(MMC:PMMCDevice; Mode,Group:Integer; Value:Byte; Buffer:Pointer):LongWord;
Description: To be documented
Buffer Buffer must point to a 64 byte buffer for Switch Status information
Note See 4.3.10 of SD Physical Layer Simplified Specification V4.10 


function SDDeviceSwitchHighspeed(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function SDDeviceSetBusSpeed(MMC:PMMCDevice; Speed:LongWord):LongWord;
Description: To be documented
Note None documented 


function SDDeviceSetBusWidth(MMC:PMMCDevice; Width:LongWord):LongWord;
Description: To be documented
Note See Table 4-30 in Section 4.7.4 of SD Physical Layer Simplified Specification V4.10 


function SDDeviceSendInterfaceCondition(MMC:PMMCDevice):LongWord;
Description: To be documented
Note See 4.3.13 of SD Physical Layer Simplified Specification V4.10. CMD8 (SEND_IF_COND) must be invoked to support SD 2.0 cards. The card must be in Idle State before issuing this command. This command will fail harmlessly for SD 1.0 cards. 


function SDDeviceSendOperationCondition(MMC:PMMCDevice; Probe:Boolean):LongWord;
Description: To be documented
Note See 4.2.3.1 of SD Physical Layer Simplified Specification V4.10 


function SDDeviceGetCardSpecific(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function SDDeviceDecodeCardSpecific(MMC:PMMCDevice):LongWord;
Description: Given a 128-bit response, decode to our card CSD structure
Note None documented 


function SDDeviceGetCardIdentification(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function SDDeviceDecodeCardIdentification(MMC:PMMCDevice):LongWord;
Description: Given a 128-bit response, decode to our card CID structure
Note None documented 


function SDDeviceSendSDStatus(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function SDDeviceDecodeSDStatus(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function SDDeviceSendSDSwitch(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function SDDeviceDecodeSDSwitch(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function SDDeviceSendSDConfiguration(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function SDDeviceDecodeSDConfiguration(MMC:PMMCDevice):LongWord;
Description: Given a 64-bit response, decode to our card SCR structure
Note None documented 


function SDDeviceSendRelativeAddress(MMC:PMMCDevice):LongWord;
Description: To be documented
Note None documented 


function SDDeviceSendApplicationCommand(MMC:PMMCDevice; Command:PMMCCommand):LongWord;
Description: To be documented
Note None documented


SDIO functions 

function SDIODeviceReset(MMC:PMMCDevice):LongWord;
Description: To be documented
Note See SDIO Simplified Specification V2.0, 4.4 Reset for SDIO 


function SDIODeviceSendOperationCondition(MMC:PMMCDevice; Probe:Boolean):LongWord;
Description: To be documented
Note None documented 


function SDIODeviceReadWriteDirect(MMC:PMMCDevice; Write:Boolean; Operation,Address:LongWord; Input:Byte; Output:PByte):LongWord;
Description: To be documented
Note None documented 


function SDIODeviceReadWriteExtended(MMC:PMMCDevice; Write:Boolean; Operation,Address:LongWord; Increment:Boolean; Buffer:Pointer; BlockCount,BlockSize:LongWord):LongWord;
Description: To be documented
Note None documented


SDHCI functions 

function SDHCIHostReset(SDHCI:PSDHCIHost; Mask:Byte):LongWord;
Description: To be documented
Reference Section 3.3 of SD Host Controller Simplified Specification V3.0 partA2_300.pdf 


function SDHCIHostSetPower(SDHCI:PSDHCIHost; Power:Word):LongWord;
Description: To be documented
Reference Section 3.3 of SD Host Controller Simplified Specification V3.0 partA2_300.pdf 


function SDHCIHostSetClock(SDHCI:PSDHCIHost; Clock:LongWord):LongWord;
Description: To be documented
Reference Section 3.2 of SD Host Controller Simplified Specification V3.0 partA2_300.pdf 


function SDHCIHostTransferPIO(SDHCI:PSDHCIHost):LongWord;
Description: To be documented
Note None documented 


function SDHCIHostTransferDMA(SDHCI:PSDHCIHost):LongWord;
Description: To be documented
Note None documented 


function SDHCIHostFinishCommand(SDHCI:PSDHCIHost):LongWord;
Description: Called by Interrupt Command handler when an SDHCI_INT_RESPONSE is received
Note None documented 


function SDHCIHostFinishData(SDHCI:PSDHCIHost):LongWord;
Description: Called by Interrupt Data handler when data is received
Note None documented 


function SDHCIHostCommandInterrupt(SDHCI:PSDHCIHost; InterruptMask:LongWord; var ReturnMask:LongWord):LongWord;
Description: To be documented
Note None documented 


function SDHCIHostDataInterrupt(SDHCI:PSDHCIHost; InterruptMask:LongWord):LongWord;
Description: To be documented
Note None documented 


function SDHCIHostStart(SDHCI:PSDHCIHost):LongWord;
Description: To be documented
Note None documented 


function SDHCIHostStop(SDHCI:PSDHCIHost):LongWord;
Description: To be documented
Note None documented 


function SDHCIHostReadByte(SDHCI:PSDHCIHost; Reg:LongWord):Byte; inline;
Description: To be documented
Note None documented 


function SDHCIHostReadWord(SDHCI:PSDHCIHost; Reg:LongWord):Word; inline;
Description: To be documented
Note None documented 


function SDHCIHostReadLong(SDHCI:PSDHCIHost; Reg:LongWord):LongWord; inline;
Description: To be documented
Note None documented 


procedure SDHCIHostWriteByte(SDHCI:PSDHCIHost; Reg:LongWord; Value:Byte); inline;
Description: To be documented
Note None documented 


procedure SDHCIHostWriteWord(SDHCI:PSDHCIHost; Reg:LongWord; Value:Word); inline;
Description: To be documented
Note None documented 


procedure SDHCIHostWriteLong(SDHCI:PSDHCIHost; Reg:LongWord; Value:LongWord); inline;
Description: To be documented
Note None documented 


function SDHCIHostSetClockDivider(SDHCI:PSDHCIHost; Index:Integer; Divider:LongWord):LongWord;
Description: To be documented
Note None documented 


function SDHCIHostSetControlRegister(SDHCI:PSDHCIHost):LongWord;
Description: To be documented
Note None documented 


function SDHCIHostCreate:PSDHCIHost;
Description: Create a new SDHCI entry
Return Pointer to new SDHCI entry or nil if SDHCI could not be created 


function SDHCIHostCreateEx(Size:LongWord):PSDHCIHost;
Description: Create a new SDHCI entry
Size Size in bytes to allocate for new SDHCI (Including the SDHCI entry)
Return Pointer to new SDHCI entry or nil if SDHCI could not be created 


function SDHCIHostDestroy(SDHCI:PSDHCIHost):LongWord;
Description: Destroy an existing SDHCI entry
Note None documented 


function SDHCIHostRegister(SDHCI:PSDHCIHost):LongWord;
Description: Register a new SDHCI in the SDHCI table
Note None documented 


function SDHCIHostDeregister(SDHCI:PSDHCIHost):LongWord;
Description: Deregister a SDHCI ?rom the SDHCI table
Note None documented 


function SDHCIHostFind(SDHCIId:LongWord):PSDHCIHost;
Description: To be documented
Note None documented 


function SDHCIHostEnumerate(Callback:TSDHCIEnumerate; Data:Pointer):LongWord;
Description: To be documented
Note None documented 


function SDHCIHostNotification(SDHCI:PSDHCIHost; Callback:TSDHCINotification; Data:Pointer; Notification,Flags:LongWord):LongWord;
Description: To be documented
Note None documented


MMC helper functions 

function MMCGetCount:LongWord; inline;
Description: Get the current MMC count
Note None documented 


function MMCDeviceCheck(MMC:PMMCDevice):PMMCDevice;
Description: Check if the supplied MMC is in the MMC table
Note None documented 


function MMCIsSD(MMC:PMMCDevice):Boolean;
Description: To be documented
Note None documented 


function MMCGetCIDValue(MMC:PMMCDevice; Version,Value:LongWord):LongWord;
Description: Extract a CID field value ?rom the 128 bit Card Identification register
Note None documented 


function MMCGetCSDValue(MMC:PMMCDevice; Value:LongWord):LongWord;
Description: Extract a CSD field value ?rom the 128 bit Card Specific register
Note None documented 


function MMCGetExtendedCSDValue(MMC:PMMCDevice; Value:LongWord):LongWord;
Description: Extract an Extended CSD field value ?rom the 512 byte Extended Card Specific register
Note None documented 


function MMCExtractBits(Buffer:Pointer; Start,Size:LongWord):LongWord;
Description: To be documented
Start Start is the starting bit to extract
Size Size is the number of bits to extract
Note Start is the LSB so to extract 8 bits ?rom 127 to 120 then Start would be 120 and Size would be 8 


function MMCExtractBitsEx(Buffer:Pointer; Length,Start,Size:LongWord):LongWord;
Description: To be documented
Length Length is the size of the buffer in LongWords
Start Start is the starting bit to extract
Size Size is the number of bits to extract
Note Start is the LSB so to extract 8 bits ?rom 127 to 120 then Start would be 120 and Size would be 8. For a 128 bit buffer (16 bytes) Length would be 4. For a 512 bit buffer (64 bytes) Length would be 16. 


function MMCIsMultiCommand(Command:Word):Boolean;
Description: To be documented
Note None documented 


function MMCStatusToString(Status:LongWord):String;
Description: Translates an MMC status code into a string describing it
Note None documented 


function MMCDeviceTypeToString(MMCType:LongWord):String;
Description: To be documented
Note None documented 


function MMCDeviceStateToString(MMCState:LongWord):String;
Description: To be documented
Note None documented 


procedure MMCLog(Level:LongWord; MMC:PMMCDevice; const AText:String);
Description: To be documented
Note None documented 


procedure MMCLogInfo(MMC:PMMCDevice; const AText:String);
Description: To be documented
Note None documented 


procedure MMCLogError(MMC:PMMCDevice; const AText:String);
Description: To be documented
Note None documented 


procedure MMCLogDebug(MMC:PMMCDevice; const AText:String);
Description: To be documented
Note None documented


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