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BUS_GET_RESOURCE(9) Kernel Developer's Manual BUS_GET_RESOURCE(9)

NAME

bus_get_resource —
read a resource range/value with a given resource ID

SYNOPSIS

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

int
bus_get_resource(device_t dev, int type, int rid, rman_res_t *startp, rman_res_t *countp);

DESCRIPTION

The bus_get_resource() function reads the range or value of the resource type, rid pair and stores it in the startp and countp arguments.

The arguments are as follows:

dev
The device to read the resource from.
type
The type of resource you want to read. It is one of:

for IRQs
for ISA DMA lines
for I/O memory
for I/O ports
rid
A bus-specific handle that identifies the resource being read.
startp
A pointer to the start address of this resource.
countp
A pointer to 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_set_resource(9), device(9), driver(9)

AUTHORS

This manual page was written by Sascha Wildner.
September 26, 2015 Linux 4.19.0-10-amd64