Index: head/share/man/man9/bus_activate_resource.9
===================================================================
--- head/share/man/man9/bus_activate_resource.9	(revision 299371)
+++ head/share/man/man9/bus_activate_resource.9	(revision 299372)
@@ -1,140 +1,141 @@
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-.Dd April 28, 2016
+.Dd May 10, 2016
 .Dt BUS_ACTIVATE_RESOURCE 9
 .Os
 .Sh NAME
 .Nm bus_activate_resource , bus_deactivate_resource
 .Nd activate or deactivate a resource
 .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
 .Fo bus_activate_resource
 .Fa "device_t dev" "int type" "int rid" "struct resource *r"
 .Fc
 .Ft int
 .Fo bus_deactivate_resource
 .Fa "device_t dev" "int type" "int rid" "struct resource *r"
 .Fc
 .Sh DESCRIPTION
 These functions activate or deactivate a previously allocated resource.
 In general, resources must be activated before they can be accessed by
 the driver.
 Bus drivers may perform additional actions to ensure that the resource is
 ready to be accessed.
 For example,
 the PCI bus driver enables memory decoding in a PCI device's command register
 when activating a memory resource.
 .Pp
 The arguments are as follows:
 .Bl -tag -width indent
 .It Fa dev
 The device that requests ownership of the resource.
 Before allocation, the resource is owned by the parent bus.
 .It Fa type
 The type of resource you want to allocate.
 It is one of:
 .Pp
 .Bl -tag -width ".Dv SYS_RES_MEMORY" -compact
 .It Dv PCI_RES_BUS
 for PCI bus numbers
 .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
 A pointer to a bus specific handle that identifies the resource being allocated.
 .It Fa r
 A pointer to the
 .Vt "struct resource"
 returned by
 .Xr bus_alloc_resource 9 .
 .El
 .Ss Resource Mapping
 Resources which can be mapped for CPU access by a
-.Xr bus_space
+.Xr bus_space 9
 tag and handle will create a mapping of the entire resource when activated.
 The tag and handle for this mapping are stored in
 .Fa r
 and can be retrieved via
 .Xr rman_get_bustag 9
 and
 .Xr rman_get_bushandle 9 .
 These can be used with the
 .Xr bus_space 9
 API to access device registers or memory described by
 .Fa r .
 If the mapping is associated with a virtual address,
 the virtual address can be retrieved via
 .Xr rman_get_virtual 9 .
 .Pp
 A wrapper API for
 .Xr bus_space 9
 is also provided that accepts the associated resource as the first argument
 in place of the
 .Xr bus_space 9
 tag and handle.
 The functions in this wrapper API are named similarly to the
 .Xr bus_space 9
 API except that
 .Dq _space
 is removed from their name.
 For example,
 .Fn bus_read_4
 can be used in place of
 .Fn bus_space_read_4 .
 The wrapper API is preferred in new drivers.
 .Pp
 These two statements both read a 32-bit register at the start of a
 resource:
 .Bd -literal
 	bus_space_read_4(rman_get_bustag(res), rman_get_bushandle(res), 0);
 	bus_read_4(res, 0);
 .Ed
 .Sh RETURN VALUES
 Zero is returned on success, otherwise an error is returned.
 .Sh SEE ALSO
 .Xr bus_alloc_resource 9 ,
+.Xr bus_space 9 ,
 .Xr device 9 ,
 .Xr driver 9
 .Sh AUTHORS
 This manual page was written by
 .An Warner Losh Aq Mt imp@FreeBSD.org .