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This makes it easier to automatically generate parts of the manager documentation in the future. Update #3993.
27 lines
1.1 KiB
ReStructuredText
27 lines
1.1 KiB
ReStructuredText
.. SPDX-License-Identifier: CC-BY-SA-4.0
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.. Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
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Operations
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==========
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Register and Lookup Name
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------------------------
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The ``rtems_io_register`` directive associates a name with the specified device
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(i.e. major/minor number pair). Device names are typically registered as part
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of the device driver initialization sequence. The ``rtems_io_lookup``
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directive is used to determine the major/minor number pair associated with the
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specified device name. The use of these directives frees the application from
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being dependent on the arbitrary assignment of major numbers in a particular
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application. No device naming conventions are dictated by RTEMS.
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Accessing an Device Driver
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--------------------------
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The I/O manager provides directives which enable the application program to
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utilize device drivers in a standard manner. There is a direct correlation
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between the RTEMS I/O manager directives ``rtems_io_initialize``,
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``rtems_io_open``, ``rtems_io_close``, ``rtems_io_read``, ``rtems_io_write``,
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and ``rtems_io_control`` and the underlying device driver entry points.
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