From dff40dca7f0d8de1527bbdff9ef0d1f91d5894c6 Mon Sep 17 00:00:00 2001
From: mlarkin <mlarkin@openbsd.org>
Date: Thu, 22 Jul 2010 18:10:37 +0000
Subject: [PATCH] First part of better pciide resume. Wake the channel by
 performing two resets separated by a small delay (a delay intended to offend
 jsg who will definitely want to fix it by checking for RDY instead)

Tested on a variety of amd and i386 hardware by myself and deraadt@

ok deraadt
---
 sys/dev/ata/wd.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/sys/dev/ata/wd.c b/sys/dev/ata/wd.c
index d357e8fae2a..e8be252b23a 100644
--- a/sys/dev/ata/wd.c
+++ b/sys/dev/ata/wd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: wd.c,v 1.85 2010/06/28 08:35:46 jsing Exp $ */
+/*	$OpenBSD: wd.c,v 1.86 2010/07/22 18:10:37 mlarkin Exp $ */
 /*	$NetBSD: wd.c,v 1.193 1999/02/28 17:15:27 explorer Exp $ */
 
 /*
@@ -400,6 +400,18 @@ wdactivate(struct device *self, int act)
 		wd_flushcache(wd, AT_POLL);
 		wd_standby(wd, AT_POLL);
 		break;
+	case DVACT_RESUME:
+		/*
+		 * Do two resets separated by a small delay. The
+		 * first wakes the controller, the second resets
+		 * the channel
+		 */
+		wdc_disable_intr(wd->drvp->chnl_softc);
+		wdc_reset_channel(wd->drvp);
+		delay(10000);
+		wdc_reset_channel(wd->drvp);
+		wdc_enable_intr(wd->drvp->chnl_softc);
+		break;
 	}
 	return (rv);
 }
-- 
2.20.1