ADJUST_RESOURCE(9) Hardware Interfaces ADJUST_RESOURCE(9)NAME
adjust_resource - modify a resource's start and size
SYNOPSIS
int adjust_resource(struct resource * res, resource_size_t start, resource_size_t size);
ARGUMENTS
res
resource to modify
start
new start value
size
new size
DESCRIPTION
Given an existing resource, change its start and size to match the arguments. Returns 0 on success, -EBUSY if it can't fit. Existing
children of the resource are assumed to be immutable.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 ADJUST_RESOURCE(9)
Check Out this Related Man Page
BUS_SET_RESOURCE(9) BSD 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 <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 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>.
BSD March 29, 2003 BSD
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