bus_set_resource(9)

NAME

bus_set_resource - associate a definite resource with a giv

en 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, u_long
start,
        u_long 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 allo

cated.

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), driv

er(9)

AUTHORS

This manual page was written by Warner Losh <imp@FreeB

SD.org>.

BSD March 29, 2003

BSD