NAME

bus_set_resource — associate a definite resource with a given resource ID

SYNOPSIS

#include <sys/param.h>
#include <sys/bus.h>

#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>

int
bus_set_resource(device_t dev, int type, int rid, rman_res_t start, rman_res_t count);

DESCRIPTION

The bus_set_resource() function sets the start address of the resource type, rid pair to be count long. Typically, client drivers do not use this interface. Bus drivers, however, often use it to set up the resources a client driver uses.

The arguments are as follows:

dev

The device to set the resource on.

type

The type of resource you want to allocate. It is one of:

SYS_RES_IRQ

for IRQs

SYS_RES_DRQ

for ISA DMA lines

SYS_RES_IOPORT

for I/O ports

SYS_RES_MEMORY

for I/O memory

rid

A bus-specific handle that identifies the resource being allocated.

start

The start address of this resource.

count

The length of the resource. For example, the size of the memory in bytes.

RETURN VALUES

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

SEE ALSO

bus_alloc_resource(9), bus_get_resource(9), device(9), driver(9)

AUTHORS

This manual page was written by Warner Losh <imp@FreeBSD.org>.