From ac7d5ef06a6d6e8d84abbd1f0b82162725f98326 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Thu, 11 May 1995 17:39:37 +0000 Subject: Initial revision --- cpukit/sapi/include/rtems/io.h | 204 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 204 insertions(+) create mode 100644 cpukit/sapi/include/rtems/io.h (limited to 'cpukit/sapi/include/rtems/io.h') diff --git a/cpukit/sapi/include/rtems/io.h b/cpukit/sapi/include/rtems/io.h new file mode 100644 index 0000000000..6824377170 --- /dev/null +++ b/cpukit/sapi/include/rtems/io.h @@ -0,0 +1,204 @@ +/* io.h + * + * This include file contains all the constants and structures associated + * with the Input/Output Manager. This manager provides a well defined + * mechanism for accessing device drivers and a structured methodology for + * organizing device drivers. + * + * Directives provided are: + * + * + initialize a device driver + * + open a device driver + * + close a device driver + * + read from a device driver + * + write to a device driver + * + special device services + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * $Id$ + */ + +#ifndef __RTEMS_IO_h +#define __RTEMS_IO_h + +#ifdef __cplusplus +extern "C" { +#endif + +#include + +/* + * The following type defines the set of IO operations which are + * recognized by _IO_Handler and can be supported by a RTEMS + * device driver. + */ + +typedef enum { + IO_INITIALIZE_OPERATION = 0, + IO_OPEN_OPERATION = 1, + IO_CLOSE_OPERATION = 2, + IO_READ_OPERATION = 3, + IO_WRITE_OPERATION = 4, + IO_CONTROL_OPERATION = 5 +} IO_operations; + +/* + * The following declare the data required to manage the Device Driver + * Address Table. + */ + +EXTERN unsigned32 _IO_Number_of_drivers; +EXTERN rtems_driver_address_table *_IO_Driver_address_table; + +/* + * _IO_Manager_initialization + * + * DESCRIPTION: + * + * This routine performs the initialization necessary for this manager. + */ + +STATIC INLINE void _IO_Manager_initialization( + rtems_driver_address_table *driver_table, + unsigned32 number_of_drivers +); + +/* + * rtems_io_initialize + * + * DESCRIPTION: + * + * This routine implements the rtems_io_initialize directive. It is invoked + * to initialize a device driver or an individual device. + */ + +rtems_status_code rtems_io_initialize( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *argument, + unsigned32 *return_value +); + +/* + * rtems_io_open + * + * DESCRIPTION: + * + * This routine implements the rtems_io_open directive. It is invoked + * to open a device. + */ + +rtems_status_code rtems_io_open( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *argument, + unsigned32 *return_value +); + +/* + * rtems_io_close + * + * DESCRIPTION: + * + * This routine implements the rtems_io_close directive. It is invoked + * to close a device. + */ + +rtems_status_code rtems_io_close( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *argument, + unsigned32 *return_value +); + +/* + * rtems_io_read + * + * DESCRIPTION: + * + * This routine implements the rtems_io_read directive. It is invoked + * to read from a device. + */ + +rtems_status_code rtems_io_read( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *argument, + unsigned32 *return_value +); + +/* + * rtems_io_write + * + * DESCRIPTION: + * + * This routine implements the rtems_io_write directive. It is invoked + * to write to a device. + */ + +rtems_status_code rtems_io_write( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *argument, + unsigned32 *return_value +); + +/* + * rtems_io_control + * + * DESCRIPTION: + * + * This routine implements the rtems_io_control directive. It is invoked + * to perform a device specific operation on a device. + */ + +rtems_status_code rtems_io_control( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *argument, + unsigned32 *return_value +); + +/* + * _IO_Initialize_all_drivers + * + * DESCRIPTION: + * + * This routine initializes all of the device drivers configured + * in the Device Driver Address Table. + */ + +void _IO_Initialize_all_drivers( void ); + +/* + * _IO_Handler_routine + * + * DESCRIPTION: + * + * This routine provides the common foundation for all of the IO + * Manager's directives. + */ + +rtems_status_code _IO_Handler_routine( + IO_operations operation, + rtems_device_major_number major, + rtems_device_minor_number minor, + void *argument, + unsigned32 *return_value +); + +#include + +#ifdef __cplusplus +} +#endif + +#endif +/* end of include file */ -- cgit v1.2.3