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| BUS_GET_RESOURCE(9) | FreeBSD 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
Thebus_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.| September 26, 2015 | FreeBSD 13.1-RELEASE |
Visit the GSP FreeBSD Man Page Interface.
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