Add a new man page for bus_activate_resource and

bus_deactivate_resource.  It could use some improvement, and others
are welcomed to do so :-)

2 files changed, 100 insertions, 2 deletions

diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile
index 0750a31..a74276a 100644
--- a/share/man/man9/Makefile
+++ b/share/man/man9/Makefile
@@ -20,8 +20,8 @@ MAN=	BUF_LOCK.9 BUF_LOCKFREE.9 BUF_LOCKINIT.9 BUF_REFCNT.9 \
 	VOP_READLINK.9 VOP_REALLOCBLKS.9 VOP_REMOVE.9 VOP_RENAME.9 \
 	VOP_REVOKE.9 VOP_SETACL.9 VOP_SETEXTATTR.9 VOP_STRATEGY.9 \
 	accept_filter.9 accf_data.9 accf_http.9 acl.9 atomic.9 \
-	bios.9 boot.9 buf.9 bus_alloc_resource.9 bus_child_present.9 \
-	bus_generic_attach.9 \
+	bios.9 boot.9 buf.9 bus_Activate_resource.9 \
+	bus_alloc_resource.9 bus_child_present.9 bus_generic_attach.9 \
 	bus_generic_detach.9 \
 	bus_generic_print_child.9 bus_generic_read_ivar.9 \
 	bus_generic_shutdown.9 bus_release_resource.9 \
@@ -107,6 +107,7 @@ MLINKS+=atomic.9 atomic_readandclear.9
 MLINKS+=atomic.9 atomic_set.9
 MLINKS+=atomic.9 atomic_subtract.9
 MLINKS+=atomic.9 atomic_store.9
+MLINKS+=bus_activate_resource.9 bus_deactivate_resource.9
 MLINKS+=byteorder.9 bswap16.9
 MLINKS+=byteorder.9 bswap32.9
 MLINKS+=byteorder.9 bswap64.9
diff --git a/share/man/man9/bus_activate_resource.9 b/share/man/man9/bus_activate_resource.9
new file mode 100644
index 0000000..74482c8
--- /dev/null
+++ b/share/man/man9/bus_activate_resource.9
@@ -0,0 +1,97 @@
+.\" -*- nroff -*-
+.\"
+.\" 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
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd March 28, 2003
+.Dt BUS_ACTIVATE_RESOURCE 9
+.Os
+.Sh NAME
+.Nm bus_activate_resource, bus_deactivate_resources
+.Nd activates or deactivates a resources
+.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
+.Fn bus_activate_resource "device_t dev" "int type" "int *rid" "struct resource *r"
+.Ft int
+.Fn bus_deactivate_resource "device_t dev" "int type" "int *rid" "struct resource *r"
+.Sh DESCRIPTION
+Activates or deactivates a previously allocated resource.
+In general, resources must be activated before they can be accessed by
+the driver so that the bus driver can map the resource into the
+devices space.
+.Pp
+Its arguments are as follows:
+.Bl -item
+.It
+.Fa dev
+is the device that requests ownership of the resource.
+Before allocation, the resource is owned by the parent bus.
+.It
+.Fa type
+is the type of resource you want to allocate.
+It is one of:
+.Bl -tag -width SYS_RES_MEMORY
+.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
+.It
+.Fa rid
+points to a bus specific handle that identifies the resource being allocated.
+.It
+.Fa r
+points to the
+.Ft struct resource
+returned by
+.Xr bus_alloc_resource 9 .
+.El
+.Sh RETURN VALUES
+Zero indicates success.
+Non-zero is an error from errno.h.
+.\".Sh EXAMPLES
+.\".Bd -literal
+.\".Ed
+.Sh SEE ALSO
+.Xr bus_alloc_resource 9 ,
+.Xr device 9 ,
+.Xr driver 9
+.Sh AUTHORS
+.An -nosplit
+This man page was written by
+.An Warner Losh Aq imp@FreeBSD.org .