From 3593f855442b4c99d0bb2e5e2240edc25e4a9de9 Mon Sep 17 00:00:00 2001
From: jhb <jhb@FreeBSD.org>
Date: Thu, 19 Nov 2009 22:14:23 +0000
Subject: - Hook into the existing stat timer to drive the transmit watchdog
 instead   of using if_watchdog and if_timer. - Reorder detach to call
 ether_ifdetach() before anything else in tl(4)   and wb(4).

---
 sys/dev/wb/if_wb.c    | 29 ++++++++++++++---------------
 sys/dev/wb/if_wbreg.h |  1 +
 2 files changed, 15 insertions(+), 15 deletions(-)

(limited to 'sys/dev/wb')

diff --git a/sys/dev/wb/if_wb.c b/sys/dev/wb/if_wb.c
index 9c2f468..cb4f3bb 100644
--- a/sys/dev/wb/if_wb.c
+++ b/sys/dev/wb/if_wb.c
@@ -158,7 +158,7 @@ static int wb_ioctl(struct ifnet *, u_long, caddr_t);
 static void wb_init(void *);
 static void wb_init_locked(struct wb_softc *);
 static void wb_stop(struct wb_softc *);
-static void wb_watchdog(struct ifnet *);
+static void wb_watchdog(struct wb_softc *);
 static int wb_shutdown(device_t);
 static int wb_ifmedia_upd(struct ifnet *);
 static void wb_ifmedia_sts(struct ifnet *, struct ifmediareq *);
@@ -849,7 +849,6 @@ wb_attach(dev)
 	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 	ifp->if_ioctl = wb_ioctl;
 	ifp->if_start = wb_start;
-	ifp->if_watchdog = wb_watchdog;
 	ifp->if_init = wb_init;
 	ifp->if_snd.ifq_maxlen = WB_TX_LIST_CNT - 1;
 
@@ -907,11 +906,11 @@ wb_detach(dev)
 	 * This should only be done if attach succeeded.
 	 */
 	if (device_is_attached(dev)) {
+		ether_ifdetach(ifp);
 		WB_LOCK(sc);
 		wb_stop(sc);
 		WB_UNLOCK(sc);
 		callout_drain(&sc->wb_stat_callout);
-		ether_ifdetach(ifp);
 	}
 	if (sc->wb_miibus)
 		device_delete_child(dev, sc->wb_miibus);
@@ -1157,7 +1156,7 @@ wb_txeof(sc)
 	ifp = sc->wb_ifp;
 
 	/* Clear the timeout timer. */
-	ifp->if_timer = 0;
+	sc->wb_timer = 0;
 
 	if (sc->wb_cdata.wb_tx_head == NULL)
 		return;
@@ -1212,7 +1211,7 @@ wb_txeoc(sc)
 
 	ifp = sc->wb_ifp;
 
-	ifp->if_timer = 0;
+	sc->wb_timer = 0;
 
 	if (sc->wb_cdata.wb_tx_head == NULL) {
 		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
@@ -1220,7 +1219,7 @@ wb_txeoc(sc)
 	} else {
 		if (WB_TXOWN(sc->wb_cdata.wb_tx_head) == WB_UNSENT) {
 			WB_TXOWN(sc->wb_cdata.wb_tx_head) = WB_TXSTAT_OWN;
-			ifp->if_timer = 5;
+			sc->wb_timer = 5;
 			CSR_WRITE_4(sc, WB_TXSTART, 0xFFFFFFFF);
 		}
 	}
@@ -1329,6 +1328,8 @@ wb_tick(xsc)
 
 	mii_tick(mii);
 
+	if (sc->wb_timer > 0 && --sc->wb_timer == 0)
+		wb_watchdog(sc);
 	callout_reset(&sc->wb_stat_callout, hz, wb_tick, sc);
 
 	return;
@@ -1529,7 +1530,7 @@ wb_start_locked(ifp)
 	/*
 	 * Set a timeout in case the chip goes out to lunch.
 	 */
-	ifp->if_timer = 5;
+	sc->wb_timer = 5;
 
 	return;
 }
@@ -1748,14 +1749,13 @@ wb_ioctl(ifp, command, data)
 }
 
 static void
-wb_watchdog(ifp)
-	struct ifnet		*ifp;
-{
+wb_watchdog(sc)
 	struct wb_softc		*sc;
+{
+	struct ifnet		*ifp;
 
-	sc = ifp->if_softc;
-
-	WB_LOCK(sc);
+	WB_LOCK_ASSERT(sc);
+	ifp = sc->wb_ifp;
 	ifp->if_oerrors++;
 	if_printf(ifp, "watchdog timeout\n");
 #ifdef foo
@@ -1768,7 +1768,6 @@ wb_watchdog(ifp)
 
 	if (ifp->if_snd.ifq_head != NULL)
 		wb_start_locked(ifp);
-	WB_UNLOCK(sc);
 
 	return;
 }
@@ -1786,7 +1785,7 @@ wb_stop(sc)
 
 	WB_LOCK_ASSERT(sc);
 	ifp = sc->wb_ifp;
-	ifp->if_timer = 0;
+	sc->wb_timer = 0;
 
 	callout_stop(&sc->wb_stat_callout);
 
diff --git a/sys/dev/wb/if_wbreg.h b/sys/dev/wb/if_wbreg.h
index ce7f46a..95d0a8e 100644
--- a/sys/dev/wb/if_wbreg.h
+++ b/sys/dev/wb/if_wbreg.h
@@ -372,6 +372,7 @@ struct wb_softc {
 	u_int8_t		wb_type;
 	u_int16_t		wb_txthresh;
 	int			wb_cachesize;
+	int			wb_timer;
 	caddr_t			wb_ldata_ptr;
 	struct wb_list_data	*wb_ldata;
 	struct wb_chain_data	wb_cdata;
-- 
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