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:

               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 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.

Debian                                         September 26, 2015                            BUS_GET_RESOURCE(9)