Find the bus that a device belongs to
#include <drvr/hwinfo.h> unsigned hwi_find_devicebus( unsigned device_hwi_off);
libdrvr
Use the -l drvr option to qcc to link against this library.
The hwi_find_devicebus() function finds the bus that the device device_hwi_off resides on. This function ensures that device_hwi_off is in fact a device and that its “owner” is in fact a bus.
Note that although we used the name “bus” to be consistent with previous nomenclature, from a topology perscpective, we actually mean any interconnect to which a device is connected.
The hwinfo section offset, or HWI_NULL_OFF if the bus/device instance doesn't exist.
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | No |
| Thread | Yes |
hwi_find(), hwi_find_bus(), hwi_find_device(), hwi_find_num_units(), hwi_find_unit(), hwi_tag_find(), hwiattr_get(), hwiattr_get_*(), hwitag_find_busattr(), hwitag_find_clkfreq(), hwitag_find_errata(), hwitag_find_ivec(), hwitag_find_nicaddr(), hwitag_find_phyaddr()