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Diffstat (limited to 'c_user/io_manager.rst')
| -rw-r--r-- | c_user/io_manager.rst | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/c_user/io_manager.rst b/c_user/io_manager.rst index f870580..cf24310 100644 --- a/c_user/io_manager.rst +++ b/c_user/io_manager.rst @@ -41,7 +41,7 @@ Device Driver Table Each application utilizing the RTEMS I/O manager must specify the address of a Device Driver Table in its Configuration Table. This table -contains each device driver’s entry points that is to be initialised by +contains each device driver's entry points that is to be initialised by RTEMS during initialization. Each device driver may contain the following entry points: @@ -59,8 +59,8 @@ following entry points: If the device driver does not support a particular entry point, then that entry in the Configuration Table should -be NULL. RTEMS will return``RTEMS_SUCCESSFUL`` as the executive’s and -zero (0) as the device driver’s return code for these device +be NULL. RTEMS will return``RTEMS_SUCCESSFUL`` as the executive's and +zero (0) as the device driver's return code for these device driver entry points. Applications can register and unregister drivers with the RTEMS I/O @@ -75,9 +75,9 @@ Major and Minor Device Numbers .. index:: major device number .. index:: minor device number -Each call to the I/O manager must provide a device’s +Each call to the I/O manager must provide a device's major and minor numbers as arguments. The major number is the -index of the requested driver’s entry points in the Device +index of the requested driver's entry points in the Device Driver Table, and is used to select a specific device driver. The exact usage of the minor number is driver specific, but is commonly used to distinguish between a number of devices @@ -224,8 +224,8 @@ and the underlying device driver entry points. Directives ========== -This section details the I/O manager’s directives. A -subsection is dedicated to each of this manager’s directives and +This section details the I/O manager's directives. A +subsection is dedicated to each of this manager's directives and describes the calling sequence, related constants, usage, and status codes. @@ -258,7 +258,7 @@ IO_REGISTER_DRIVER - Register a device driver This directive attempts to add a new device driver to the Device Driver Table. The user can specify a specific major device number via the -directive’s ``major`` parameter, or let the registration routine find +directive's ``major`` parameter, or let the registration routine find the next available major device number by specifing a major number of``0``. The selected major device number is returned via the``registered_major`` directive parameter. The directive automatically allocation major device numbers from the highest value down. |