Manual Pages  — BUS_GET_RESOURCE

bus_get_resource – read a resource range/value with a given resource ID

SYNOPSIS DESCRIPTION RETURN VALUES SEE ALSO AUTHORS

#include <sys/param.h>

#include <sys/bus.h>

#include <sys/rman.h>

int
bus_get_resource(device_t dev, int type, int rid, rman_res_t *startp, rman_res_t *countp);

The bus_get_resource() function reads the range or value of the resource type, ,, rid pair and stores it in the startp and countp arguments.

The arguments are as follows:

dev
	The device to read the resource from.
type
	The type of resource you want to read. It is one of:

SYS_RES_IRQ	for IRQs
SYS_RES_DRQ	for ISA DMA lines
SYS_RES_MEMORY
	for I/O memory
SYS_RES_IOPORT
	for I/O ports

rid
	A bus-specific handle that identifies the resource being read.
startp
	A pointer to the start address of this resource.
countp
	A pointer to the length of the resource. For example, the size of the memory in bytes.

Zero is returned on success, otherwise an error is returned.

This manual page was written by Sascha Wildner.