Difference between revisions of "Unit PL18X"

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----
 
----
  
−
''To be documented''
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 +
'''PL18X version Id'''
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 +
<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
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<code>PPL18XVersionID = ^TPL18XVersionID;</code>
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 +
<code>TPL18XVersionID = record</code>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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| <code>PeripheralID:LongWord;</code>
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| style="width: 50%;"|&nbsp;
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|-
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| <code>PeripheralMask:LongWord;</code>
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| &nbsp;
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|-
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| <code>VersionData:PPL18XVersionData;</code>
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| &nbsp;
 +
|-
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|}
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</div></div>
 +
 
 +
'''PL18X version data'''
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
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<code>PPL18XVersionData = ^TPL18XVersionData;</code>
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 +
<code>TPL18XVersionData = record</code>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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| <code>Name:String;</code>
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| Name of the device
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|-
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| <code>ClockRegister:LongWord;</code>
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| Default value for MCICLOCK register
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|-
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| <code>ClockEnable:LongWord;</code>
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| Enable value for MMCICLOCK register
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|-
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| <code>Clock8BitEnable:LongWord;</code>
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| Enable value for 8 bit bus
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|-
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| <code>ClockNegativeEdgeEnable:LongWord;</code>
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| Enable value for inverted data/cmd output
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|-
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| <code>DataLengthBits:LongWord;</code>
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| Number of bits in the MMCIDATALENGTH register
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|-
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| <code>FIFOSize:LongWord;</code>
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| Number of bytes that can be written when MMCI_TXFIFOEMPTY is asserted (likewise for RX)
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|-
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| <code>FIFOHalfSize:LongWord;</code>
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| Number of bytes that can be written when MCI_TXFIFOHALFEMPTY is asserted (likewise for RX)
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|-
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| <code>DataCommandEnable:LongWord;</code>
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| Enable value for data commands
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|-
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| <code>DataControlMaskDDR:LongWord;</code>
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| DDR mode mask in MMCIDATACTRL register
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|-
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| <code>DataControlMaskSDIO:LongWord;</code>
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| SDIO enable mask in MMCIDATACTRL register
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|-
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| <code>STSDIO:LongBool;</code>
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| Enable ST specific SDIO logic
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|-
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| <code>STClockDivider:LongBool;</code>
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| True if using a ST-specific clock divider algorithm
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|-
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| <code>BlockSizeDataControl16:LongBool;</code>
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| True if Block size is at b16..b30 position in MMCIDATACTRL register
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|-
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| <code>BlockSizeDataControl4:LongBool;</code>
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| True if Block size is at b4..b16 position in MMCIDATACTRL register
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|-
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| <code>PowerPowerUp:LongWord;</code>
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| Power up value for MMCIPOWER register
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|-
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| <code>ClockMaximum:LongWord;</code>
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| Maximum clk frequency supported by the controller
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|-
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| <code>SignalDirection:LongBool;</code>
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| Input/out direction of bus signals can be indicated
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|-
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| <code>PowerClockGate:LongBool;</code>
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| MMCIPOWER register must be used to gate the clock
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|-
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| <code>BusyDetect:LongBool;</code>
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| True if busy detection on dat0 is supported
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|-
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| <code>PowerNoPower:LongBool;</code>
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| Bits in MMCIPOWER don't control external power supply
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|-
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| <code>ExplicitMClockControl:LongBool;</code>
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| Enable explicit mclk control in driver
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|-
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| <code>QualcommFIFO:LongBool;</code>
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| Enable Qualcomm specific FIFO PIO read logic
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|-
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| <code>QualcommDMA:LongBool;</code>
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| Enable Qualcomm specific DMA glue for DMA transfers
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|-
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| <code>ReversedIRQ:LongBool;</code>
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| Handle data irq before cmd irq
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|-
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|}
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</div></div>
 +
 
 +
'''PL18X MMCI registers'''
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
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<code>PPL18XMMCIRegisters = ^TPL18XMMCIRegisters;</code>
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<code>TPL18XMMCIRegisters = record</code>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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|colspan="2"|Note: Layout of the PL18X registers (See: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0172a/i1006458.html)
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|-
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| <code>Power:LongWord;</code>
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| Power control register
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|-
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| <code>Clock:LongWord;</code>
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| Clock control register
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|-
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| <code>Argument:LongWord;</code>
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| Argument register
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|-
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| <code>Command:LongWord;</code>
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| Command register
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|-
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| <code>RespCmd:LongWord;</code>
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| Response command register
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|-
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| <code>Response0:LongWord;</code>
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| Response register
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|-
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| <code>Response1:LongWord;</code>
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| Response register
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|-
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| <code>Response2:LongWord;</code>
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| Response register
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|-
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| <code>Response3:LongWord;</code>
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| Response register
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|-
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| <code>DataTimer:LongWord;</code>
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| Data timer
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|-
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| <code>DataLength:LongWord;</code>
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| Data length register
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|-
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| <code>DataCtrl:LongWord;</code>
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| Data control register
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|-
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| <code>DataCnt:LongWord;</code>
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| Data counter
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|-
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| <code>Status:LongWord;</code>
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| Status register
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|-
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| <code>Clear:LongWord;</code>
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| Clear register
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|-
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| <code>Mask0:LongWord;</code>
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| Interrupt 0 mask register
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|-
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| <code>Mask1:LongWord;</code>
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| Interrupt 1 mask register
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|-
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| <code>Select:LongWord;</code>
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| Secure digital memory card select register
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|-
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| <code>FifoCnt:LongWord;</code>
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| FIFO counter
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|-
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| <code>Reserved:array[$4C..$7C] of Byte;</code>
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| Reserved
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|-
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| <code>FIFO:LongWord;</code>
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| Data FIFO register (0x80 to 0xBC)
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|-
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|}
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</div></div>
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'''PL18X SDHCI get RXFIFO count'''
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{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
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|-
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| <code>TPL18XSDHCIGetRXFIFOCount = function(SDHCI:PPL18XSDHCIHost; Status,Remain:LongWord):LongWord;</code>
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| style="width: 40%;"|
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|-
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|}
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'''PL18X SDHCI host'''
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
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<code>PPL18XSDHCIHost = ^TPL18XSDHCIHost;</code>
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<code>TPL18XSDHCIHost = record</code>
 +
<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 +
{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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|colspan="2"|''SDHCI Properties''
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|-
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| <code>SDHCI:TSDHCIHost;</code>
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| style="width: 50%;"|&nbsp;
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|-
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|colspan="2"|''PL18X Properties''
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|-
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| <code>IRQ0:LongWord;</code>
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| &nbsp;
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|-
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| <code>IRQ1:LongWord;</code>
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| &nbsp;
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|-
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| <code>Lock:TSpinHandle;</code>
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| Host lock (Differs from lock in Host portion) Spin lock due to use by interrupt handler
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|-
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| <code>SingleIRQ:LongBool;</code>
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| The host only has a single IRQ line instead of the standard 2 lines
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|-
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| <code>Registers:PPL18XMMCIRegisters;</code>
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| Host registers
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|-
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| <code>Version:PPL18XVersionData;</code>
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| Host version data
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|-
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| <code>ClockRegister:LongWord;</code>
 +
| Current clock register value
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|-
 +
| <code>PowerRegister:LongWord;</code>
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| Current power register value
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|-
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| <code>DataCtrlRegister:LongWord;</code>
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| Current data control register value
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|-
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| <code>MaximumBlockSize:LongWord;</code>
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| Host maximum block size
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|-
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| <code>MaximumRequestSize:LongWord;</code>
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| Host maximum request size
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|-
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| <code>BusyStatus:LongWord;</code>
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| Current Busy Status for ST Micro variants
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|-
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| <code>GetRXFIFOCount:TPL18XSDHCIGetRXFIFOCount;</code>
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| Model specific GetRXFIFOCount function
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|-
 +
|}
 +
</div></div>
 +
<br />
  
 
=== Public variables ===
 
=== Public variables ===

Revision as of 04:57, 13 June 2017

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Description

ARM PrimeCell PL180/181 Multimedia Card Interface Driver unit

The PL180/181 Multimedia Card is an ARM peripheral that is compatible with MMC multimedia cards and SD secure digital cards in memory mapped I/O format compatible with the ARM advanced peripheral bus (APB).

The design of the Pl180/181 allows for multiple cards per controller however this driver currently only supports attaching one card.

Constants

To be documented

Type definitions


PL18X version Id

[Expand]

PPL18XVersionID = ^TPL18XVersionID;

TPL18XVersionID = record

PL18X version data

[Expand]

PPL18XVersionData = ^TPL18XVersionData;

TPL18XVersionData = record

PL18X MMCI registers

[Expand]

PPL18XMMCIRegisters = ^TPL18XMMCIRegisters;

TPL18XMMCIRegisters = record

PL18X SDHCI get RXFIFO count

TPL18XSDHCIGetRXFIFOCount = function(SDHCI:PPL18XSDHCIHost; Status,Remain:LongWord):LongWord;

PL18X SDHCI host

[Expand]

PPL18XSDHCIHost = ^TPL18XSDHCIHost;

TPL18XSDHCIHost = record


Public variables


PL18X specific variables

PL18X_MMCI_FIQ_ENABLED:LongBool; The SDHCI uses Fast Interrupt Requests (FIQ) instead of IRQ
PL18X_MMCI_MIN_FREQ:LongWord = 400000; Minimum clock frequency for SDHCI (Default minimum of 400KHz)
PL18X_MMCI_MAX_FREQ:LongWord = 400000; Maximum clock frequency for SDHCI (Default maximum of 400KHz)


Function declarations

To be documented


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