--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/include/drivers/uart16550.h Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,171 @@
+// Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// e32\include\drivers\uart16550.h
+//
+//
+
+/**
+ @file
+ @internalTechnology
+*/
+
+#ifndef __UART16550_H__
+#define __UART16550_H__
+#include <e32def.h>
+
+//
+// Register Definitions for 16550-type UARTs
+//
+
+const TUint8 K16550TXHROffset=0<<K16550OffsetShift; // Transmit Holding Register
+const TUint8 K16550RXHROffset=0<<K16550OffsetShift; // Receive Holding Register
+const TUint8 K16550BDLoOffset=0<<K16550OffsetShift; // Baud Rate Divisor Low
+const TUint8 K16550IEROffset=1<<K16550OffsetShift; // Interrupt Enable Register
+const TUint8 K16550BDHiOffset=1<<K16550OffsetShift; // Baud Rate Divisor High
+const TUint8 K16550ISROffset=2<<K16550OffsetShift; // Interrupt Status Register
+const TUint8 K16550FCROffset=2<<K16550OffsetShift; // FIFO Control Register
+const TUint8 K16550LCROffset=3<<K16550OffsetShift; // Line Control Register
+const TUint8 K16550MCROffset=4<<K16550OffsetShift; // Modem Control Register
+const TUint8 K16550LSROffset=5<<K16550OffsetShift; // Line Status Register
+const TUint8 K16550MSROffset=6<<K16550OffsetShift; // Modem Status Register
+const TUint8 K16550ScratchpadOffset=7<<K16550OffsetShift; // Scratchpad Register
+
+// Interrupt Enable Register
+
+const TUint8 K16550IER_RDAI=1; // Received Data Available
+const TUint8 K16550IER_THREI=2; // Transmit Holding Register Empty
+const TUint8 K16550IER_RLSI=4; // Receive Line Status (error or break)
+const TUint8 K16550IER_MSI=8; // Modem Status
+
+// Interrupt Status Register
+
+const TUint8 K16550ISR_NotPending=1; // Not Interrupt Pending
+const TUint8 K16550ISR_IntIdMask=6; // Mask for Interrupt Identification
+const TUint8 K16550ISR_RDAI=4; // Received Data Available
+const TUint8 K16550ISR_THREI=2; // Transmit Holding Register Empty
+const TUint8 K16550ISR_RLSI=6; // Receive Line Status
+const TUint8 K16550ISR_MSI=0; // Modem Status
+const TUint8 K16550ISR_RxTimeout=8; // Set if FIFO timeout (in conjunction with RDA)
+
+// FIFO control Register
+
+const TUint8 K16550FCR_Enable=1; // Enable TX and RX FIFOs
+const TUint8 K16550FCR_RxReset=2; // Reset RX FIFO (self-clearing)
+const TUint8 K16550FCR_TxReset=4; // Reset TX FIFO (self-clearing)
+const TUint8 K16550FCR_TxRxRdy=8; //
+const TUint8 K16550FCR_RxTrig1=0; // RX FIFO triggers when >=1 char received
+const TUint8 K16550FCR_RxTrig4=64; // RX FIFO triggers when >=4 chars received
+const TUint8 K16550FCR_RxTrig8=128; // RX FIFO triggers when >=8 chars received
+const TUint8 K16550FCR_RxTrig14=192; // RX FIFO triggers when >=14 chars received
+
+// Line Control Register
+
+const TUint8 K16550LCR_Data5=0; // 5 bit characters
+const TUint8 K16550LCR_Data6=1; // 6 bit characters
+const TUint8 K16550LCR_Data7=2; // 7 bit characters
+const TUint8 K16550LCR_Data8=3; // 8 bit characters
+const TUint8 K16550LCR_Stop1=0; // 1 stop bit
+const TUint8 K16550LCR_Stop2=4; // 2 stop bits
+const TUint8 K16550LCR_ParityEnable=8; // Use parity
+const TUint8 K16550LCR_ParityEven=16; // Use even parity
+const TUint8 K16550LCR_ParityMark=40; // Use mark parity
+const TUint8 K16550LCR_ParitySpace=56; // Use space parity
+const TUint8 K16550LCR_TxBreak=64; // Transmit a break
+const TUint8 K16550LCR_DLAB=128; // Divisor Latch Access
+
+// Modem Control Register
+
+const TUint8 K16550MCR_DTR=1;
+const TUint8 K16550MCR_RTS=2;
+const TUint8 K16550MCR_OUT1=4;
+const TUint8 K16550MCR_OUT2=8;
+const TUint8 K16550MCR_LocalLoop=16;
+
+// Line Status Register
+
+const TUint8 K16550LSR_RxReady=1; // Received data ready
+const TUint8 K16550LSR_RxOverrun=2; // Receiver overrun
+const TUint8 K16550LSR_RxParityErr=4; // Receiver parity error
+const TUint8 K16550LSR_RxFrameErr=8; // Receiver framing error
+const TUint8 K16550LSR_RxBreak=16; // Receive break detect
+const TUint8 K16550LSR_TXHREmpty=32; // Transmit Holding Register Empty (FIFO empty)
+const TUint8 K16550LSR_TxIdle=64; // Transmitter Idle
+const TUint8 K16550LSR_RxErrPending=128; // FIFO contains an error or break indication
+
+// Modem Status Register
+
+const TUint8 K16550MSR_DeltaCTS=1;
+const TUint8 K16550MSR_DeltaDSR=2;
+const TUint8 K16550MSR_TERI=4;
+const TUint8 K16550MSR_DeltaDCD=8;
+const TUint8 K16550MSR_CTS=16;
+const TUint8 K16550MSR_DSR=32;
+const TUint8 K16550MSR_RI=64;
+const TUint8 K16550MSR_DCD=128;
+
+// Wrapper class
+
+class T16550Uart
+ {
+public:
+ void ModifyFCR(TUint aClearMask, TUint aSetMask);
+ void ModifyLCR(TUint aClearMask, TUint aSetMask);
+ void ModifyMCR(TUint aClearMask, TUint aSetMask);
+ void ModifyIER(TUint aClearMask, TUint aSetMask);
+ void SetFCR(TUint aValue);
+ void SetLCR(TUint aValue);
+ void SetMCR(TUint aValue);
+ void SetIER(TUint aValue);
+ inline TUint FCR()
+ {return iFCR;}
+ inline TUint LCR()
+ {return iLCR;}
+ inline TUint MCR()
+ {return iMCR;}
+ inline TUint IER()
+ {return iIER;}
+ inline void SetTxData(TUint aData)
+ {iBase[K16550TXHROffset]=(TUint8)aData;}
+ inline TUint RxData()
+ {return iBase[K16550RXHROffset];}
+ inline TUint ISR()
+ {return iBase[K16550ISROffset];}
+ inline TUint LSR()
+ {return iBase[K16550LSROffset];}
+ inline TUint MSR()
+ {return iBase[K16550MSROffset];}
+ inline TUint TestISR(TUint aMask)
+ {return iBase[K16550ISROffset]&aMask;}
+ inline TUint TestLSR(TUint aMask)
+ {return iBase[K16550LSROffset]&aMask;}
+ inline TUint TestMSR(TUint aMask)
+ {return iBase[K16550MSROffset]&aMask;}
+ inline void SetScratch(TUint aValue)
+ {iBase[K16550ScratchpadOffset]=(TUint8)aValue;}
+ inline TUint Scratch()
+ {return iBase[K16550ScratchpadOffset];}
+ inline void SetBaudRateDivisor(TUint aValue)
+ {iBase[K16550BDHiOffset]=(TUint8)(aValue>>8); iBase[K16550BDLoOffset]=(TUint8)aValue;}
+public:
+ volatile TUint8* iBase; // base address
+ TUint8 iFCR; // FCR follower
+ TUint8 iLCR; // LCR follower
+ TUint8 iMCR; // MCR follower
+ TUint8 iIER; // IER follower
+ };
+
+
+#endif
+
+