DragonFly On-Line Manual Pages
BUS_SET_RESOURCE(9) DragonFly Kernel Developer's Manual BUS_SET_RESOURCE(9)
NAME
bus_set_resource -- associate a definite resource with a given resource
ID
SYNOPSIS
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/rman.h>
int
bus_set_resource(device_t dev, int type, int rid, u_long start,
u_long count, int cpuid);
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_MEMORY for I/O memory
SYS_RES_IOPORT for I/O ports
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.
cpuid Owner CPU for interrupt resources. Other resource types, e.g.
IOPORT, MEMORY and DRQ, are shared across CPUs, so this parameter
has to be set to -1
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>.
DragonFly 3.5 October 4, 2011 DragonFly 3.5