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- /*
- ** $VER: ioblix/uart.h 37.3 (7.4.99)
- **
- ** include file for access to IOBlix UARTs
- **
- ** (C) Copyright 1998,1999 Thore Böckelmann
- ** All Rights Reserved.
- */
-
- #ifndef IOBLIX_UART_H
- #define IOBLIX_UART_H 1
-
- #define UART_RX 0
- #define UART_TX 0
- #define UART_DLL 0
- #define UART_IER 1
- #define UART_DLM 1
- #define UART_IIR 2
- #define UART_FCR 2
- #define UART_EFR 2
- #define UART_LCR 3
- #define UART_MCR 4
- #define UART_XON1 4
- #define UART_LSR 5
- #define UART_XON2 5
- #define UART_MSR 6
- #define UART_XOFF1 6
- #define UART_SCR 7
- #define UART_XOFF2 7
- #define UART_REG_COUNT 8
-
- /*
- The old static structures are now obsolete now and have been completely erased.
- These new definitions allow a much more hardware independent way to access different,
- but very similar chips (ie serial UARTs 16C650 and 16C654, which have the same registers,
- but at different addresses.
- */
-
- struct UARTRegisters {
- ULONG ur_RegCount;
- volatile UBYTE *ur_Regs[UART_REG_COUNT];
- };
-
- #define ur_rx ur_Regs[UART_RX]
- #define ur_tx ur_Regs[UART_TX]
- #define ur_dll ur_Regs[UART_DLL]
- #define ur_ier ur_Regs[UART_IER]
- #define ur_dlm ur_Regs[UART_DLM]
- #define ur_iir ur_Regs[UART_IIR]
- #define ur_fcr ur_Regs[UART_FCR]
- #define ur_efr ur_Regs[UART_EFR]
- #define ur_lcr ur_Regs[UART_LCR]
- #define ur_mcr ur_Regs[UART_MCR]
- #define ur_xon1 ur_Regs[UART_XON1]
- #define ur_lsr ur_Regs[UART_LSR]
- #define ur_xon2 ur_Regs[UART_XON2]
- #define ur_msr ur_Regs[UART_MSR]
- #define ur_xoff1 ur_Regs[UART_XOFF1]
- #define ur_scr ur_Regs[UART_SCR]
- #define ur_xoff2 ur_Regs[UART_XOFF2]
-
- /*
- * These are the definitions for the FIFO Control Register
- * (16650 only)
- */
- #define UART_FCR_ENABLE_FIFO 0x01 /* Enable the FIFO */
- #define UART_FCR_CLEAR_RCVR 0x02 /* Clear the RCVR FIFO */
- #define UART_FCR_CLEAR_XMIT 0x04 /* Clear the XMIT FIFO */
- #define UART_FCR_DMA_SELECT 0x08 /* For DMA applications */
- #define UART_FCR_TRIGGER_MASK 0xC0 /* Mask for the FIFO trigger range */
- #define UART_FCR_TRIGGER_1 0x00 /* Mask for trigger set at 1 */
- #define UART_FCR_TRIGGER_4 0x40 /* Mask for trigger set at 4 */
- #define UART_FCR_TRIGGER_8 0x80 /* Mask for trigger set at 8 */
- #define UART_FCR_TRIGGER_14 0xC0 /* Mask for trigger set at 14 */
- /* 16650A redefinitions */
- #define UART_FCR0_R_TRIGGER_8 0x00 /* Mask for receive trigger set at 8 */
- #define UART_FCR0_R_TRIGGER_16 0x40 /* Mask for receive trigger set at 16 */
- #define UART_FCR0_R_TRIGGER_24 0x80 /* Mask for receive trigger set at 24 */
- #define UART_FCR0_R_TRIGGER_28 0xC0 /* Mask for receive trigger set at 28 */
- #define UART_FCR0_T_TRIGGER_8 0x10 /* Mask for transmit trigger set at 8 */
- #define UART_FCR0_T_TRIGGER_16 0x00 /* Mask for transmit trigger set at 16 */
- #define UART_FCR0_T_TRIGGER_24 0x20 /* Mask for transmit trigger set at 24 */
- #define UART_FCR0_T_TRIGGER_30 0x30 /* Mask for transmit trigger set at 30 */
- /* 16654 redefinitions */
- #define UART_FCR4_R_TRIGGER_8 0x00 /* Mask for receive trigger set at 8 */
- #define UART_FCR4_R_TRIGGER_16 0x40 /* Mask for receive trigger set at 16 */
- #define UART_FCR4_R_TRIGGER_56 0x80 /* Mask for receive trigger set at 56 */
- #define UART_FCR4_R_TRIGGER_60 0xC0 /* Mask for receive trigger set at 60 */
- #define UART_FCR4_T_TRIGGER_8 0x00 /* Mask for transmit trigger set at 8 */
- #define UART_FCR4_T_TRIGGER_16 0x10 /* Mask for transmit trigger set at 16 */
- #define UART_FCR4_T_TRIGGER_32 0x20 /* Mask for transmit trigger set at 32 */
- #define UART_FCR4_T_TRIGGER_56 0x30 /* Mask for transmit trigger set at 56 */
- /* TI 16750 definitions */
- #define UART_FCR7_64BYTE 0x20 /* Go into 64 byte mode */
-
- /*
- * These are the definitions for the Line Control Register
- *
- * Note: if the word length is 5 bits (UART_LCR_WLEN5), then setting
- * UART_LCR_STOP will select 1.5 stop bits, not 2 stop bits.
- */
- #define UART_LCR_DLAB 0x80 /* Divisor latch access bit */
- #define UART_LCR_SBC 0x40 /* Set break control */
- #define UART_LCR_SPAR 0x20 /* Mark/Space parity select */
- #define UART_LCR_EPAR 0x10 /* Odd/Even parity select */
- #define UART_LCR_PARITY 0x08 /* Parity Enable */
- #define UART_LCR_STOP 0x04 /* Stop bits: 0=1 stop bit, 1= 2 stop bits */
- #define UART_LCR_WLEN5 0x00 /* Wordlength: 5 bits */
- #define UART_LCR_WLEN6 0x01 /* Wordlength: 6 bits */
- #define UART_LCR_WLEN7 0x02 /* Wordlength: 7 bits */
- #define UART_LCR_WLEN8 0x03 /* Wordlength: 8 bits */
-
- /*
- * These are the definitions for the Line Status Register
- */
- #define UART_LSR_ERROR 0x80 /* Any error happend */
- #define UART_LSR_TEMT 0x40 /* Transmitter empty */
- #define UART_LSR_THRE 0x20 /* Transmit-hold-register empty */
- #define UART_LSR_BI 0x10 /* Break interrupt indicator */
- #define UART_LSR_FE 0x08 /* Frame error indicator */
- #define UART_LSR_PE 0x04 /* Parity error indicator */
- #define UART_LSR_OE 0x02 /* Overrun error indicator */
- #define UART_LSR_DR 0x01 /* Receiver data ready */
-
- /*
- * These are the definitions for the Interrupt Identification Register
- */
- #define UART_IIR_NO_INT 0x01 /* No interrupts pending */
- #define UART_IIR_ID 0x06 /* Mask for the interrupt ID */
-
- #define UART_IIR_MSI 0x00 /* Modem status interrupt */
- #define UART_IIR_THRI 0x02 /* Transmitter holding register empty */
- #define UART_IIR_RDI 0x04 /* Receiver data interrupt */
- #define UART_IIR_RLSI 0x06 /* Receiver line status interrupt */
- #define UART_IIR_XOFF 0x10 /* Xoff interrupt */
-
- /*
- * These are the definitions for the Interrupt Enable Register
- */
- #define UART_IER_CTS 0x80 /* Enable Modem CTS interrupt */
- #define UART_IER_RTS 0x40 /* Enable Modem RTS interrupt */
- #define UART_IER_XOFF 0x20 /* Enable Modem Xoff interrupt */
- #define UART_IER_MSI 0x08 /* Enable Modem status interrupt */
- #define UART_IER_RLSI 0x04 /* Enable receiver line status interrupt */
- #define UART_IER_THRI 0x02 /* Enable Transmitter holding register int. */
- #define UART_IER_RDI 0x01 /* Enable receiver data interrupt */
- /*
- * Sleep mode for ST16650 and TI16750.
- * Note that for 16650, EFR-bit 4 must be selected as well.
- */
- #define UART_IERX_SLEEP 0x10 /* Enable sleep mode */
-
- /*
- * These are the definitions for the Modem Control Register
- */
- #define UART_MCR_CLOCK4 0x80 /* Clock division by 4 */
- #define UART_MCR_IRDA 0x40 /* IR enable */
- #define UART_MCR_IRQ 0x20 /* IRQ select, 16c650 only */
- #define UART_MCR_LOOP 0x10 /* Enable loopback test mode */
- #define UART_MCR_OUT2 0x08 /* Out2 complement */
- #define UART_MCR_OUT1 0x04 /* Out1 complement */
- #define UART_MCR_RTS 0x02 /* RTS complement */
- #define UART_MCR_DTR 0x01 /* DTR complement */
-
- /*
- * These are the definitions for the Modem Status Register
- */
- #define UART_MSR_DCD 0x80 /* Data Carrier Detect */
- #define UART_MSR_RI 0x40 /* Ring Indicator */
- #define UART_MSR_DSR 0x20 /* Data Set Ready */
- #define UART_MSR_CTS 0x10 /* Clear to Send */
- #define UART_MSR_DDCD 0x08 /* Delta DCD */
- #define UART_MSR_TERI 0x04 /* Trailing edge ring indicator */
- #define UART_MSR_DDSR 0x02 /* Delta DSR */
- #define UART_MSR_DCTS 0x01 /* Delta CTS */
- #define UART_MSR_ANY_DELTA 0x0F /* Any of the delta bits! */
-
- /*
- * These are the definitions for the Extended Features Register
- * (StarTech 16C660 only, when DLAB=1)
- */
- #define UART_EFR_CTS 0x80 /* CTS flow control */
- #define UART_EFR_RTS 0x40 /* RTS flow control */
- #define UART_EFR_SCD 0x20 /* Special character detect */
- #define UART_EFR_ECB 0x10 /* Enhanced control bit */
- /*
- * the low four bits control software flow control
- */
-
- #endif /* IOBLIX_UART_H */
-
-