uart.h

/*
 *  RTEMS driver for Blackfin UARTs
 *
 *  COPYRIGHT (c) 2008 Kallisti Labs, Los Gatos, CA, USA
 *            written by Allan Hessenflow <allanh@kallisti.com>
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.org/license/LICENSE.
 */
 

#ifndef _UART_H_
#define _UART_H_


#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
  const char        *name;                 
  uint32_t          uart_baseAddress;           
  uint32_t          uart_rxDmaBaseAddress;      
  uint32_t          uart_txDmaBaseAddress;      
  bool              uart_useInterrupts;         
  bool              uart_useDma;                
  int               uart_baud;                  
  void              *termios;                   
  uint8_t volatile  flags;                      
  uint16_t          length;                     
} bfin_uart_channel_t;


typedef struct {
  uint32_t freq;
  int num_channels;
  bfin_uart_channel_t *channels;
} bfin_uart_config_t;

typedef struct {
  uint32_t base_address;
  int source;
} bfin_uart_arg_t;



char bfin_uart_poll_read(rtems_device_minor_number minor);

void bfin_uart_poll_write(int minor, char c);


rtems_status_code bfin_uart_initialize(rtems_device_major_number major,
    bfin_uart_config_t *config);



rtems_device_driver bfin_uart_open(rtems_device_major_number major,
    rtems_device_minor_number minor, void *arg);



void bfinUart_txDmaIsr(void *_arg);



void bfinUart_rxDmaIsr(void *_arg);


void bfinUart_txIsr(void *_arg);


void bfinUart_rxIsr(void *_arg);


#ifdef __cplusplus
}
#endif

#endif /* _UART_H_ */