From 6cca5e346393008bb6a46be94c2da458c14700a8 Mon Sep 17 00:00:00 2001
From: Doug Ambrisko <ambrisko@FreeBSD.org>
Date: Thu, 17 Jun 2004 02:19:11 +0000
Subject: [PATCH] While setting up a transmit packet disable interupts on the
 card then re-enable them after we are done setting up the packet.  This seems
 to fix the MPI350 newer firmware hangs.

---
 sys/dev/an/if_an.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/dev/an/if_an.c b/sys/dev/an/if_an.c
index e1623ec40863..fb08f7023704 100644
--- a/sys/dev/an/if_an.c
+++ b/sys/dev/an/if_an.c
@@ -2725,6 +2725,9 @@ an_start(ifp)
 			ifp->if_timer = 5;
 		}
 	} else { /* MPI-350 */
+		/* Disable interrupts. */
+		CSR_WRITE_2(sc, AN_INT_EN(sc->mpi350), 0);
+
 		while (sc->an_rdata.an_tx_empty ||
 		    idx != sc->an_rdata.an_tx_cons) {
 			IF_DEQUEUE(&ifp->if_snd, m0);
@@ -2798,6 +2801,9 @@ an_start(ifp)
 			 */
 			ifp->if_timer = 5;
 		}
+
+		/* Re-enable interrupts. */
+		CSR_WRITE_2(sc, AN_INT_EN(sc->mpi350), AN_INTRS(sc->mpi350));
 	}
 
 	if (m0 != NULL)