This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs.

usbd_mphys()

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()