'\" t
.\"     Title: drm_vma_node_start
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: DRM Core
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "DRM_VMA_NODE_START" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "DRM Core"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
drm_vma_node_start \- Return start address for page\-based addressing
.SH "SYNOPSIS"
.HP \w'unsigned\ long\ drm_vma_node_start('u
.BI "unsigned long drm_vma_node_start(struct\ drm_vma_offset_node\ *\ " "node" ");"
.SH "ARGUMENTS"
.PP
\fInode\fR
.RS 4
Node to inspect
.RE
.SH "DESCRIPTION"
.PP
Return the start address of the given node\&. This can be used as offset into the linear VM space that is provided by the VMA offset manager\&. Note that this can only be used for page\-based addressing\&. If you need a proper offset for user\-space mappings, you must apply
\(lq<< PAGE_SHIFT\(rq
or use the
\fBdrm_vma_node_offset_addr\fR
helper instead\&.
.SH "RETURNS"
.PP
Start address of
\fInode\fR
for page\-based addressing\&. 0 if the node does not have an offset allocated\&.
.SH "AUTHORS"
.PP
\fBJesse Barnes\fR <\&jesse.barnes@intel.com\&>
.br
Intel Corporation, 
	    
	  
.RS 4
Initial version
.RE
.PP
\fBLaurent Pinchart\fR <\&laurent.pinchart@ideasonboard.com\&>
.br
Ideas on board SPRL, 
	    
	  
.RS 4
Driver internals
.RE
.PP
\fBDaniel Vetter\fR <\&daniel.vetter@ffwll.ch\&>
.br
Intel Corporation, 
	    
	  
.RS 4
Contributions all over the place
.RE
.SH "COPYRIGHT"
.br