bus_set_resource (9)

Leading comments

Copyright (c) 2003 M. Warner Losh

All rights reserved.

This program is free software.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
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2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer...

(The comments found at the beginning of the groff file "man9/bus_set_resource.9freebsd".)

NAME

bus_set_resource - associate a definite resource with a given resource ID

SYNOPSIS

In sys/param.h In sys/bus.h

In machine/bus.h In sys/rman.h In machine/resource.h Ft int Fo bus_set_resource Fa device_t dev int type int rid u_long start u_long count Fc

DESCRIPTION

The Fn bus_set_resource function sets the start address of the resource Fa type , rid pair to be Fa 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:

Fa dev

The device to set the resource on.

Fa 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

Fa rid

A bus-specific handle that identifies the resource being allocated.

Fa start

The start address of this resource.

Fa 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_resource9, bus_get_resource9, device(9), driver(9)

AUTHORS

This manual page was written by An Warner Losh Aq imp@FreeBSD.org .