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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [devs/] [serial/] [powerpc/] [cogent/] [v2_0/] [src/] [cogent_serial.h] - Rev 174
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//========================================================================== // // io/serial/powerpc/cogent_serial.h // // PowerPC Cogent Serial I/O definitions. // //========================================================================== //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos is free software; you can redistribute it and/or modify it under // the terms of the GNU General Public License as published by the Free // Software Foundation; either version 2 or (at your option) any later version. // // eCos is distributed in the hope that it will be useful, but WITHOUT ANY // WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with eCos; if not, write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. // // As a special exception, if other files instantiate templates or use macros // or inline functions from this file, or you compile this file and link it // with other works to produce a work based on this file, this file does not // by itself cause the resulting work to be covered by the GNU General Public // License. However the source code for this file must still be made available // in accordance with section (3) of the GNU General Public License. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //========================================================================== //#####DESCRIPTIONBEGIN#### // // Author(s): jskov, based on ARM driver by gthomas // Contributors:gthomas, jskov // Date: 1999-03-02 // Purpose: Cogent Serial definitions //####DESCRIPTIONEND#### //========================================================================== // Description of serial ports on Cogent board // Interrupt Enable Register #define IER_RCV 0x01 #define IER_XMT 0x02 #define IER_LS 0x04 #define IER_MS 0x08 // Line Control Register #define LCR_WL5 0x00 // Word length #define LCR_WL6 0x01 #define LCR_WL7 0x02 #define LCR_WL8 0x03 #define LCR_SB1 0x00 // Number of stop bits #define LCR_SB1_5 0x04 // 1.5 -> only valid with 5 bit words #define LCR_SB2 0x04 #define LCR_PN 0x00 // Parity mode - none #define LCR_PE 0x0C // Parity mode - even #define LCR_PO 0x08 // Parity mode - odd #define LCR_PM 0x28 // Forced "mark" parity #define LCR_PS 0x38 // Forced "space" parity #define LCR_DL 0x80 // Enable baud rate latch // Line Status Register #define LSR_RSR 0x01 #define LSR_THE 0x20 // Modem Control Register #define MCR_DTR 0x01 #define MCR_RTS 0x02 #define MCR_INT 0x08 // Enable interrupts // Interrupt status register #define ISR_Tx 0x02 #define ISR_Rx 0x04 // FIFO control register #define FCR_ENABLE 0x01 #define FCR_CLEAR_RCVR 0x02 #define FCR_CLEAR_XMIT 0x04 //////////////////////////////////////////////////////////// // Clean this up. //----------------------------------------------------------------------------- // There are two serial ports. #define CMA_SER_16550_BASE_A 0xe900047 // port A #define CMA_SER_16550_BASE_B 0xe900007 // port B #define SER_16550_BASE CMA_SER_16550_BASE_B //----------------------------------------------------------------------------- // Define the serial registers. The Cogent board is equipped with a 16552 // serial chip. #define SER_16550_RBR 0x00 // receiver buffer register, read, dlab = 0 #define SER_16550_THR 0x00 // transmitter holding register, write, dlab = 0 #define SER_16550_DLL 0x00 // divisor latch (LS), read/write, dlab = 1 #define SER_16550_IER 0x08 // interrupt enable register, read/write, dlab = 0 #define SER_16550_DLM 0x08 // divisor latch (MS), read/write, dlab = 1 #define SER_16550_IIR 0x10 // interrupt identification reg, read, dlab = 0 #define SER_16550_FCR 0x10 // fifo control register, write, dlab = 0 #define SER_16550_AFR 0x10 // alternate function reg, read/write, dlab = 1 #define SER_16550_LCR 0x18 // line control register, read/write #define SER_16550_MCR 0x20 // modem control register, read/write #define SER_16550_LSR 0x28 // line status register, read #define SER_16550_MSR 0x30 // modem status register, read #define SER_16550_SCR 0x38 // scratch pad register // The interrupt enable register bits. #define SIO_IER_ERDAI 0x01 // enable received data available irq #define SIO_IER_ETHREI 0x02 // enable THR empty interrupt #define SIO_IER_ELSI 0x04 // enable receiver line status irq #define SIO_IER_EMSI 0x08 // enable modem status interrupt // The interrupt identification register bits. #define SIO_IIR_IP 0x01 // 0 if interrupt pending #define SIO_IIR_ID_MASK 0x0e // mask for interrupt ID bits // The line status register bits. #define SIO_LSR_DR 0x01 // data ready #define SIO_LSR_OE 0x02 // overrun error #define SIO_LSR_PE 0x04 // parity error #define SIO_LSR_FE 0x08 // framing error #define SIO_LSR_BI 0x10 // break interrupt #define SIO_LSR_THRE 0x20 // transmitter holding register empty #define SIO_LSR_TEMT 0x40 // transmitter register empty #define SIO_LSR_ERR 0x80 // any error condition // The modem status register bits. #define SIO_MSR_DCTS 0x01 // delta clear to send #define SIO_MSR_DDSR 0x02 // delta data set ready #define SIO_MSR_TERI 0x04 // trailing edge ring indicator #define SIO_MSR_DDCD 0x08 // delta data carrier detect #define SIO_MSR_CTS 0x10 // clear to send #define SIO_MSR_DSR 0x20 // data set ready #define SIO_MSR_RI 0x40 // ring indicator #define SIO_MSR_DCD 0x80 // data carrier detect // The line control register bits. #define SIO_LCR_WLS0 0x01 // word length select bit 0 #define SIO_LCR_WLS1 0x02 // word length select bit 1 #define SIO_LCR_STB 0x04 // number of stop bits #define SIO_LCR_PEN 0x08 // parity enable #define SIO_LCR_EPS 0x10 // even parity select #define SIO_LCR_SP 0x20 // stick parity #define SIO_LCR_SB 0x40 // set break #define SIO_LCR_DLAB 0x80 // divisor latch access bit // The FIFO control register #define SIO_FCR_FCR0 0x01 // enable xmit and rcvr fifos #define SIO_FCR_FCR1 0x02 // clear RCVR FIFO #define SIO_FCR_FCR2 0x04 // clear XMIT FIFO ///////////////////////////////////////// static unsigned char select_word_length[] = { LCR_WL5, // 5 bits / word (char) LCR_WL6, LCR_WL7, LCR_WL8 }; static unsigned char select_stop_bits[] = { 0, LCR_SB1, // 1 stop bit LCR_SB1_5, // 1.5 stop bit LCR_SB2 // 2 stop bits }; static unsigned char select_parity[] = { LCR_PN, // No parity LCR_PE, // Even parity LCR_PO, // Odd parity LCR_PM, // Mark parity LCR_PS, // Space parity }; // FIXME: calc all properly // The Cogent board has a 3.6864 MHz crystal static unsigned short select_baud[] = { 0, // Unused 4608, // 50 0, // 75 2094, // 110 0, // 134.5 1536, // 150 0, // 200 768, // 300 384, // 600 182, // 1200 0, // 1800 96, // 2400 0, // 3600 48, // 4800 32, // 7200 24, // 9600 16, // 14400 12, // 19200 6, // 38400 4, // 57600 2, // 115200 0, // 230400 };