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⟩.