freebsd-skq/share/man/man9/bus_set_resource.9

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.\" -*- nroff -*-
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.\" Copyright (c) 2003 M. Warner Losh
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.Dd March 29, 2003
.Dt BUS_SET_RESOURCE 9
.Os
.Sh NAME
.Nm bus_set_resource
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.Nd "associate a definite resource with a given resource ID"
.Sh SYNOPSIS
.In sys/param.h
.In sys/bus.h
.Pp
.In machine/bus.h
.In sys/rman.h
.In machine/resource.h
.Ft int
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.Fo bus_set_resource
.Fa "device_t dev" "int type" "int rid" "rman_res_t start" "rman_res_t count"
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.Fc
.Sh DESCRIPTION
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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.
.Pp
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The arguments are as follows:
.Bl -tag -width indent
.It Fa dev
The device to set the resource on.
.It Fa type
The type of resource you want to allocate.
It is one of:
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.Pp
.Bl -tag -width ".Dv SYS_RES_MEMORY" -compact
.It Dv SYS_RES_IRQ
for IRQs
.It Dv SYS_RES_DRQ
for ISA DMA lines
.It Dv SYS_RES_IOPORT
for I/O ports
.It Dv SYS_RES_MEMORY
for I/O memory
.El
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.It Fa rid
A bus-specific handle that identifies the resource being allocated.
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.It Fa start
The start address of this resource.
.It Fa count
The length of the resource.
For example, the size of the memory in bytes.
.El
.Sh RETURN VALUES
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Zero is returned on success, otherwise an error is returned.
.Sh SEE ALSO
.Xr bus_alloc_resource 9 ,
.Xr bus_get_resource 9 ,
.Xr device 9 ,
.Xr driver 9
.Sh AUTHORS
This manual page was written by
.An Warner Losh Aq Mt imp@FreeBSD.org .