From: Hasso Tepper <hasso@dragonflybsd.org>
Date: Mon, 8 Sep 2008 10:16:23 +0000 (+0000)
Subject: Turn power off for detached (module unloaded) PCI devices. No power down is
X-Git-Tag: v2.1.1~450
X-Git-Url: https://gitweb.dragonflybsd.org/dragonfly.git/commitdiff_plain/72876ce0680bbb61ce6bedfb36f18004c36e99fc?hp=a5d1fda3bb3e61efd582f036d7444e94ea068c66

Turn power off for detached (module unloaded) PCI devices. No power down is
done by default, you have to use hw.pci.do_power_nodriver sysctl.
---

diff --git a/sys/bus/pci/pci.c b/sys/bus/pci/pci.c
index a1246f626a..48297ff810 100644
--- a/sys/bus/pci/pci.c
+++ b/sys/bus/pci/pci.c
@@ -24,7 +24,7 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * $FreeBSD: src/sys/pci/pci.c,v 1.141.2.15 2002/04/30 17:48:18 tmm Exp $
- * $DragonFly: src/sys/bus/pci/pci.c,v 1.55 2008/09/06 21:18:39 hasso Exp $
+ * $DragonFly: src/sys/bus/pci/pci.c,v 1.56 2008/09/08 10:16:23 hasso Exp $
  *
  */
 
@@ -2492,6 +2492,12 @@ pci_driver_added(device_t dev, driver_t *driver)
 	kfree(devlist, M_TEMP);
 }
 
+static void
+pci_child_detached(device_t parent __unused, device_t child) {
+	/* Turn child's power off */
+	pci_cfg_save(child, device_get_ivars(child), 1);
+}
+
 static device_method_t pci_methods[] = {
 	/* Device interface */
 	DEVMETHOD(device_probe,		pci_probe),
@@ -2506,6 +2512,7 @@ static device_method_t pci_methods[] = {
 	DEVMETHOD(bus_read_ivar,	pci_read_ivar),
 	DEVMETHOD(bus_write_ivar,	pci_write_ivar),
 	DEVMETHOD(bus_driver_added,	pci_driver_added),
+	DEVMETHOD(bus_child_detached,	pci_child_detached),
 	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
 	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),