//==========================================================================////      io/serial/arm/edb7xxx_serial.c////      Cirrus Logic EDB7XXX Serial I/O Interface Module (interrupt driven)////==========================================================================//####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):   gthomas// Contributors:  gthomas// Date:        1999-02-04// Purpose:     EDB7XXX Serial I/O module (interrupt driven version)// Description: ////####DESCRIPTIONEND####////==========================================================================#include <pkgconf/system.h>#include <pkgconf/io_serial.h>#include <pkgconf/io.h>#include <cyg/io/io.h>#include <cyg/hal/hal_intr.h>#include <cyg/io/devtab.h>#include <cyg/io/serial.h>#include <cyg/infra/diag.h>#ifdef CYGPKG_IO_SERIAL_ARM_EDB7XXX#include "edb7xxx_serial.h"typedef struct edb7xxx_serial_info {    CYG_ADDRWORD   data,                      // Pointer to data register                   control,                   // Pointer to baud rate/line control register                   stat,                      // Pointer to system flags for this port                   syscon;                    // Pointer to system control for this port    CYG_WORD       tx_int_num,                // Transmit interrupt number                   rx_int_num,                // Receive interrupt number                   ms_int_num;                // Modem Status Change interrupt number    cyg_interrupt  serial_tx_interrupt,                    serial_rx_interrupt,                    serial_ms_interrupt;    cyg_handle_t   serial_tx_interrupt_handle,                    serial_rx_interrupt_handle,                    serial_ms_interrupt_handle;    bool           tx_enabled;} edb7xxx_serial_info;static bool edb7xxx_serial_init(struct cyg_devtab_entry *tab);static bool edb7xxx_serial_putc(serial_channel *chan, unsigned char c);static Cyg_ErrNo edb7xxx_serial_lookup(struct cyg_devtab_entry **tab,                                    struct cyg_devtab_entry *sub_tab,                                   const char *name);static unsigned char edb7xxx_serial_getc(serial_channel *chan);static Cyg_ErrNo edb7xxx_serial_set_config(serial_channel *chan, cyg_uint32 key,                                           const void *xbuf, cyg_uint32 *len);static void edb7xxx_serial_start_xmit(serial_channel *chan);static void edb7xxx_serial_stop_xmit(serial_channel *chan);static cyg_uint32 edb7xxx_serial_tx_ISR(cyg_vector_t vector, cyg_addrword_t data);static void       edb7xxx_serial_tx_DSR(cyg_vector_t vector, cyg_ucount32 count, cyg_addrword_t data);static cyg_uint32 edb7xxx_serial_rx_ISR(cyg_vector_t vector, cyg_addrword_t data);static void       edb7xxx_serial_rx_DSR(cyg_vector_t vector, cyg_ucount32 count, cyg_addrword_t data);static cyg_uint32 edb7xxx_serial_ms_ISR(cyg_vector_t vector, cyg_addrword_t data);static void       edb7xxx_serial_ms_DSR(cyg_vector_t vector, cyg_ucount32 count, cyg_addrword_t data);static SERIAL_FUNS(edb7xxx_serial_funs,                    edb7xxx_serial_putc,                    edb7xxx_serial_getc,                   edb7xxx_serial_set_config,                   edb7xxx_serial_start_xmit,                   edb7xxx_serial_stop_xmit    );#ifdef CYGPKG_IO_SERIAL_ARM_EDB7XXX_SERIAL1static edb7xxx_serial_info edb7xxx_serial_info1 = {UARTDR1, // Data register                                                 UBLCR1,  // Port control                                                 SYSFLG1, // Status                                                 SYSCON1, // System config                                                 CYGNUM_HAL_INTERRUPT_UTXINT1, // Tx interrupt                                                 CYGNUM_HAL_INTERRUPT_URXINT1, // Rx interrupt                                                 0 /*CYGNUM_HAL_INTERRUPT_UMSINT*/}; // Modem control#if CYGNUM_IO_SERIAL_ARM_EDB7XXX_SERIAL1_BUFSIZE > 0static unsigned char edb7xxx_serial_out_buf1[CYGNUM_IO_SERIAL_ARM_EDB7XXX_SERIAL1_BUFSIZE];static unsigned char edb7xxx_serial_in_buf1[CYGNUM_IO_SERIAL_ARM_EDB7XXX_SERIAL1_BUFSIZE];static SERIAL_CHANNEL_USING_INTERRUPTS(edb7xxx_serial_channel1,                                       edb7xxx_serial_funs,                                        edb7xxx_serial_info1,                                       CYG_SERIAL_BAUD_RATE(CYGNUM_IO_SERIAL_ARM_EDB7XXX_SERIAL1_BAUD),                                       CYG_SERIAL_STOP_DEFAULT,                                       CYG_SERIAL_PARITY_DEFAULT,                                       CYG_SERIAL_WORD_LENGTH_DEFAULT,                                       CYG_SERIAL_FLAGS_DEFAULT,                                       &edb7xxx_serial_out_buf1[0], sizeof(edb7xxx_serial_out_buf1),                                       &edb7xxx_serial_in_buf1[0], sizeof(edb7xxx_serial_in_buf1)    );#elsestatic SERIAL_CHANNEL(edb7xxx_serial_channel1,                      edb7xxx_serial_funs,                       edb7xxx_serial_info1,                      CYG_SERIAL_BAUD_RATE(CYGNUM_IO_SERIAL_ARM_EDB7XXX_SERIAL1_BAUD),                      CYG_SERIAL_STOP_DEFAULT,                      CYG_SERIAL_PARITY_DEFAULT,                      CYG_SERIAL_WORD_LENGTH_DEFAULT,                      CYG_SERIAL_FLAGS_DEFAULT    );#endifDEVTAB_ENTRY(edb7xxx_serial_io1,              CYGDAT_IO_SERIAL_ARM_EDB7XXX_SERIAL1_NAME,             0,                     // Does not depend on a lower level interface             &cyg_io_serial_devio,              edb7xxx_serial_init,              edb7xxx_serial_lookup,     // Serial driver may need initializing             &edb7xxx_serial_channel1    );#endif //  CYGPKG_IO_SERIAL_ARM_EDB7XXX_SERIAL2#ifdef CYGPKG_IO_SERIAL_ARM_EDB7XXX_SERIAL2static edb7xxx_serial_info edb7xxx_serial_info2 = {UARTDR2, // Data register                                                 UBLCR2,  // Port control                                                 SYSFLG2, // Status                                                 SYSCON2, // System config                                                 CYGNUM_HAL_INTERRUPT_UTXINT2, // Tx interrupt                                                 CYGNUM_HAL_INTERRUPT_URXINT2, // Rx interrupt                                                 0};      // No modem control#if CYGNUM_IO_SERIAL_ARM_EDB7XXX_SERIAL2_BUFSIZE > 0static unsigned char edb7xxx_serial_out_buf2[CYGNUM_IO_SERIAL_ARM_EDB7XXX_SERIAL2_BUFSIZE];static unsigned char edb7xxx_serial_in_buf2[CYGNUM_IO_SERIAL_ARM_EDB7XXX_SERIAL2_BUFSIZE];static SERIAL_CHANNEL_USING_INTERRUPTS(edb7xxx_serial_channel2,                                       edb7xxx_serial_funs,                                        edb7xxx_serial_info2,                                       CYG_SERIAL_BAUD_RATE(CYGNUM_IO_SERIAL_ARM_EDB7XXX_SERIAL2_BAUD),                                       CYG_SERIAL_STOP_DEFAULT,                                       CYG_SERIAL_PARITY_DEFAULT,                                       CYG_SERIAL_WORD_LENGTH_DEFAULT,                                       CYG_SERIAL_FLAGS_DEFAULT,                                       &edb7xxx_serial_out_buf2[0], sizeof(edb7xxx_serial_out_buf2),                                       &edb7xxx_serial_in_buf2[0], sizeof(edb7xxx_serial_in_buf2)    );#elsestatic SERIAL_CHANNEL(edb7xxx_serial_channel2,                      edb7xxx_serial_funs,                       edb7xxx_serial_info2,                      CYG_SERIAL_BAUD_RATE(CYGNUM_IO_SERIAL_ARM_EDB7XXX_SERIAL2_BAUD),                      CYG_SERIAL_STOP_DEFAULT,                      CYG_SERIAL_PARITY_DEFAULT,                      CYG_SERIAL_WORD_LENGTH_DEFAULT,                      CYG_SERIAL_FLAGS_DEFAULT    );#endifDEVTAB_ENTRY(edb7xxx_serial_io2,              CYGDAT_IO_SERIAL_ARM_EDB7XXX_SERIAL2_NAME,             0,                     // Does not depend on a lower level interface             &cyg_io_serial_devio,              edb7xxx_serial_init,              edb7xxx_serial_lookup,     // Serial driver may need initializing             &edb7xxx_serial_channel2    );#endif //  CYGPKG_IO_SERIAL_ARM_EDB7XXX_SERIAL2// Internal function to actually configure the hardware to desired baud rate, etc.static booledb7xxx_serial_config_port(serial_channel *chan, cyg_serial_info_t *new_config, bool init){    edb7xxx_serial_info *edb7xxx_chan = (edb7xxx_serial_info *)chan->dev_priv;    volatile cyg_uint32 *syscon = (volatile cyg_uint32 *)edb7xxx_chan->syscon;    volatile cyg_uint32 *blcfg = (volatile cyg_uint32 *)edb7xxx_chan->control;