USB_GET_ADDR(9F) Kernel Functions for Drivers USB_GET_ADDR(9F)

NAME

usb_get_addr - Retrieve device USB address

SYNOPSIS

#include <sys/usb/usba.h>

int usb_get_addr(dev_info_t *dip);

INTERFACE LEVEL

illumos DDI specific (illumos DDI)

PARAMETERS

dip
Pointer to the device's dev_info structure.

DESCRIPTION

The usb_get_addr() function returns the current USB bus address for
debugging purposes. The returned address is unique for a specific
USB bus, and may be replicated if multiple host controller instances
are present on the system.

RETURN VALUES

On success: USB device address.


On failure: returns 0. Fails if dip is NULL.

CONTEXT

May be called from user, kernel or interrupt context.

EXAMPLES

int usb_addr;

usb_addr = usb_get_addr(dip);

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+--------------------+-------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-------------------+
|Architecture | PCI-based systems |
+--------------------+-------------------+
|Interface stability | Committed |
+--------------------+-------------------+

SEE ALSO

attributes(7), usb_pipe_xopen(9F)

September 16, 2016 USB_GET_ADDR(9F)