From 5e2a63b25101c6aaea4b77c014bbad44b04c0b35 Mon Sep 17 00:00:00 2001
From: Alexander Yurchenko <grange@cvs.openbsd.org>
Date: Sun, 17 Oct 2004 17:50:49 +0000
Subject: Add a callback drv_probe() to allow underlying ata controller driver
 to probe for drives in its own way. It's a no-op for now but will be needed
 for native sata support.

---
 sys/dev/ic/wdc.c    | 14 +++++++++-----
 sys/dev/ic/wdcvar.h |  5 ++++-
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/sys/dev/ic/wdc.c b/sys/dev/ic/wdc.c
index 7aa44ad900b..e17770c97ac 100644
--- a/sys/dev/ic/wdc.c
+++ b/sys/dev/ic/wdc.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: wdc.c,v 1.85 2004/10/17 08:58:56 grange Exp $     */
+/*      $OpenBSD: wdc.c,v 1.86 2004/10/17 17:50:48 grange Exp $     */
 /*	$NetBSD: wdc.c,v 1.68 1999/06/23 19:00:17 bouyer Exp $ */
 
 
@@ -792,12 +792,16 @@ wdcattach(chp)
 	if (!chp->_vtbl)
 		chp->_vtbl = &wdc_default_vtbl;
 
-	if (wdcprobe(chp) == 0) {
-		/* If no drives, abort attach here. */
+	if (chp->wdc->drv_probe != NULL) {
+		chp->wdc->drv_probe(chp);
+	} else {
+		if (wdcprobe(chp) == 0) {
+			/* If no drives, abort attach here. */
 #ifndef __OpenBSD__
-		wdc_delref(chp);
+			wdc_delref(chp);
 #endif
-		return;
+			return;
+		}
 	}
 
 	/* ATAPI drives need settling time. Give them 250ms */
diff --git a/sys/dev/ic/wdcvar.h b/sys/dev/ic/wdcvar.h
index 4af1b1d0ecc..d87e15a16a7 100644
--- a/sys/dev/ic/wdcvar.h
+++ b/sys/dev/ic/wdcvar.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: wdcvar.h,v 1.36 2004/10/17 08:58:56 grange Exp $     */
+/*      $OpenBSD: wdcvar.h,v 1.37 2004/10/17 17:50:48 grange Exp $     */
 /*	$NetBSD: wdcvar.h,v 1.17 1999/04/11 20:50:29 bouyer Exp $	*/
 
 /*-
@@ -203,6 +203,9 @@ struct wdc_softc { /* Per controller state */
 
 	/* if WDC_CAPABILITY_IRQACK set in 'cap' */
 	void            (*irqack)(struct channel_softc *);
+
+	/* Driver callback to probe for drives */
+	void (*drv_probe)(struct channel_softc *);
 };
 
  /*
-- 
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