Add a new 'bce_mgmt_init_locked' function to enable the minimal parts

of the chip to let ASF/IPMI firmware to respond to IPMI after attaching
and when the chip is down.  David looked at it but could really say
what they right minimal config. stuff would be.  It's not documented.
I figured this out via trial and error.

Reviewed by:	davidch

1 files changed, 44 insertions, 0 deletions

diff --git a/sys/dev/bce/if_bce.c b/sys/dev/bce/if_bce.c
index 34ba0c6..d6cce9d 100644
--- a/sys/dev/bce/if_bce.c
+++ b/sys/dev/bce/if_bce.c
@@ -309,6 +309,7 @@ static int  bce_ifmedia_upd			(struct ifnet *);
 static void bce_ifmedia_sts			(struct ifnet *, struct ifmediareq *);
 static void bce_init_locked			(struct bce_softc *);
 static void bce_init				(void *);
+static void bce_mgmt_init_locked(struct bce_softc *sc);
 
 static void bce_init_context		(struct bce_softc *);
 static void bce_get_mac_addr		(struct bce_softc *);
@@ -781,6 +782,11 @@ bce_attach(device_t dev)
 	/* Add the supported sysctls to the kernel. */
 	bce_add_sysctls(sc);
 
+	/* Get the firmware running so IPMI still works */
+	BCE_LOCK(sc);
+	bce_mgmt_init_locked(sc);
+	BCE_UNLOCK(sc);
+
 	goto bce_attach_exit;
 
 bce_attach_fail:
@@ -3241,6 +3247,7 @@ bce_stop(struct bce_softc *sc)
 
 	DBPRINT(sc, BCE_VERBOSE_RESET, "Exiting %s()\n", __FUNCTION__);
 
+	bce_mgmt_init_locked(sc);
 }
 
 
@@ -4569,6 +4576,43 @@ bce_init_locked_exit:
 	return;
 }
 
+static void
+bce_mgmt_init_locked(struct bce_softc *sc)
+{
+	u32 val;
+	struct ifnet *ifp;
+
+	DBPRINT(sc, BCE_VERBOSE_RESET, "Entering %s()\n", __FUNCTION__);
+
+	BCE_LOCK_ASSERT(sc);
+
+	ifp = sc->bce_ifp;
+
+	/* Check if the driver is still running and bail out if it is. */
+	if (ifp->if_drv_flags & IFF_DRV_RUNNING)
+		goto bce_mgmt_init_locked_exit;
+
+	/* Initialize the on-boards CPUs */
+	bce_init_cpus(sc);
+
+	val = (BCM_PAGE_BITS - 8) << 24;
+	REG_WR(sc, BCE_RV2P_CONFIG, val);
+
+	/* Enable all critical blocks in the MAC. */
+	REG_WR(sc, BCE_MISC_ENABLE_SET_BITS,
+	       BCE_MISC_ENABLE_SET_BITS_RX_V2P_ENABLE |
+	       BCE_MISC_ENABLE_SET_BITS_RX_DMA_ENABLE |
+	       BCE_MISC_ENABLE_SET_BITS_COMPLETION_ENABLE);
+	REG_RD(sc, BCE_MISC_ENABLE_SET_BITS);
+	DELAY(20);
+
+	bce_ifmedia_upd(ifp);
+bce_mgmt_init_locked_exit:
+	DBPRINT(sc, BCE_VERBOSE_RESET, "Exiting %s()\n", __FUNCTION__);
+
+	return;
+}
+
 
 /****************************************************************************/
 /* Handles controller initialization when called from an unlocked routine.  */