r241438 broke IPMI access on Sun Fire X2200 M2(BCM5715).

Fix the IPMI regression by sending BGE_FW_DRV_STATE_UNLOAD to
ASF/IPMI firmware in driver attach phase.  Sending heartheat to
ASF/IPMI is enabled only after upping interface so
setting driver state to BGE_FW_DRV_STATE_START in attach phase
broke IPMI access.
While I'm here, add NVRAM arbitration lock before performing
controller reset. ASF/IPMI firmware may be able to access the NVRAM
while controller reset is in progress.  Without the arbitration
lock before resetting the controller, ASF/IPMI may not initialize
properly.

Special thanks to Miroslav Lachman who provided full remote
debugging environments.

1 files changed, 17 insertions, 3 deletions

diff --git a/sys/dev/bge/if_bge.c b/sys/dev/bge/if_bge.c
index db86ec2..cf1a240 100644
--- a/sys/dev/bge/if_bge.c
+++ b/sys/dev/bge/if_bge.c
@@ -3594,15 +3594,15 @@ bge_attach(device_t dev)
 	}
 
 	bge_stop_fw(sc);
-	bge_sig_pre_reset(sc, BGE_RESET_START);
+	bge_sig_pre_reset(sc, BGE_RESET_SHUTDOWN);
 	if (bge_reset(sc)) {
 		device_printf(sc->bge_dev, "chip reset failed\n");
 		error = ENXIO;
 		goto fail;
 	}
 
-	bge_sig_legacy(sc, BGE_RESET_START);
-	bge_sig_post_reset(sc, BGE_RESET_START);
+	bge_sig_legacy(sc, BGE_RESET_SHUTDOWN);
+	bge_sig_post_reset(sc, BGE_RESET_SHUTDOWN);
 
 	if (bge_chipinit(sc)) {
 		device_printf(sc->bge_dev, "chip initialization failed\n");
@@ -3960,6 +3960,20 @@ bge_reset(struct bge_softc *sc)
 	} else
 		write_op = bge_writereg_ind;
 
+	if (sc->bge_asicrev != BGE_ASICREV_BCM5700 &&
+	    sc->bge_asicrev != BGE_ASICREV_BCM5701) {
+		CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_SET1);
+		for (i = 0; i < 8000; i++) {
+			if (CSR_READ_4(sc, BGE_NVRAM_SWARB) &
+			    BGE_NVRAMSWARB_GNT1)
+				break;
+			DELAY(20);
+		}
+		if (i == 8000) {
+			if (bootverbose)
+				device_printf(dev, "NVRAM lock timedout!\n");
+		}
+	}
 	/* Take APE lock when performing reset. */
 	bge_ape_lock(sc, BGE_APE_LOCK_GRC);