add pci_decompose_tag()

2 files changed, 9 insertions, 2 deletions

diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile
index ec8ba88ca5e..3beb5477fd3 100644
--- a/share/man/man9/Makefile
+++ b/share/man/man9/Makefile
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.106 2005/11/14 14:30:21 mickey Exp $
+#	$OpenBSD: Makefile,v 1.107 2005/11/14 16:42:42 mickey Exp $
 #	$NetBSD: Makefile,v 1.4 1996/01/09 03:23:01 thorpej Exp $
 
 #	Makefile for section 9 (kernel function and variable) manual pages.
@@ -214,6 +214,7 @@ MLINKS+=rssadapt.9 ieee80211_rssadapt_choose.9 \
 	rssadapt.9 ieee80211_rssadapt_raise_rate.9 \
 	rssadapt.9 ieee80211_rssadapt_updatestats.9
 MLINKS+=pci_conf_read.9 pci_conf_write.9 pci_conf_read.9 pci_make_tag.9
+MLINKS+=pci_conf_read.9 pci_decompose_tag.9
 MLINKS+=pfind.9 pgfind.9
 MLINKS+=pmap.9 pmap_init.9 pmap.9 pmap_enter.9 pmap.9 pmap_remove.9 \
 	pmap.9 pmap_unwire.9 pmap.9 pmap_protect.9 pmap.9 pmap_page_protect.9 \
diff --git a/share/man/man9/pci_conf_read.9 b/share/man/man9/pci_conf_read.9
index 554552dc2c5..69adf8289dc 100644
--- a/share/man/man9/pci_conf_read.9
+++ b/share/man/man9/pci_conf_read.9
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: pci_conf_read.9,v 1.2 2005/11/14 16:35:33 mickey Exp $
+.\"	$OpenBSD: pci_conf_read.9,v 1.3 2005/11/14 16:42:42 mickey Exp $
 .\"
 .\" Copyright (c) 2005 Michael Shalayeff
 .\" All rights reserved.
@@ -32,6 +32,9 @@
 .Fd #include <machine/pci_machdep.h>
 .Ft pcitag_t
 .Fn pci_make_tag "pci_chipset_tag_t pc" "int bus" "int dev" "int func"
+.Ft void
+.Fn pci_decompose_tag "pci_chipset_tag_t pc" "pcitag_t tag" "int *busp" \
+"int *devp" "int *funcp"
 .Ft pcireg_t
 .Fn pci_conf_read "pci_chipset_tag_t pc" "pcitag_t tag" "int reg"
 .Ft void
@@ -62,6 +65,9 @@ and the device specification in a tuple of
 .Ar function .
 The PCI tag composition is a PCI chipset dependant operation
 although often as simple as shift and logical OR combination.
+The
+.Nm pci_decompose_tag
+provides a reverse opration.
 Having a tag composed now it is possible to perform configuration
 space read and write with
 .Nm pci_conf_read