From 65d328a3ebb7d35b5f5149ca6e1e89cef7f4e08b Mon Sep 17 00:00:00 2001
From: Niclas Zeising <zeising@FreeBSD.org>
Date: Mon, 17 Jun 2019 05:41:47 +0000
Subject: [PATCH] pci(4): Document PCIOCATTACHED

Document the PCIOCATTACHED ioctl(2) in the pci(4) manual.
PCIOCATTACHED is used to query if a driver has attached to a PCI.

Reviewed by:	bcr, imp
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D20652
---
 share/man/man4/pci.4 | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/share/man/man4/pci.4 b/share/man/man4/pci.4
index 5ae10657e55..a063f80aca1 100644
--- a/share/man/man4/pci.4
+++ b/share/man/man4/pci.4
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd June 14, 2018
+.Dd June 17, 2019
 .Dt PCI 4
 .Os
 .Sh NAME
@@ -333,6 +333,26 @@ The limitations on data width described for
 reading registers, above, also apply to writing
 .Tn PCI
 configuration registers.
+.It PCIOCATTACHED
+This
+.Xr ioctl 2
+allows users to query if a driver is attached to the
+.Tn PCI
+specified in the passed-in
+.Va pci_io
+structure.
+The
+.Va pci_io
+structure is described above, however, the
+.Va pi_reg
+and
+.Va pi_width
+fields are not used.
+The status of the device is stored in the
+.Va pi_data
+field.
+A value of 0 indicates no driver is attached, while a value larger than 0
+indicates that a driver is attached.
 .It PCIOCBARMMAP
 This
 .Xr ioctl 2