Belkin F8E211 Podręcznik Użytkownika Pobierz pdf (Strona 80)

usbd mphys()  2006, QNX Software Systems GmbH & Co. KG.

Get the physical address of memory allocated by usbd alloc()

Synopsis:

#include <sys/usbdi.h>

paddr

t usbd mphys( const void *ptr );

Description:

The usbd mphys() function obtains the physical address used by

usbd

alloc() to allocate memory for a data transfer.

Returns:

Physical address.

Classiﬁcation:

QNX Neutrino, QNX 4

Safety

Cancellation point No

Interrupt handler No

Signal handler No

Thread Yes

See also:

usbd alloc(), usbd alloc urb(), usbd free(), usbd free urb(),

usbd

mphys()

68 Chapter 4 USB Library Reference November 2, 2006

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Belkin F8E211 Podręcznik Użytkownika Strona 80