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From: Thomas Moestl <tmm@FreeBSD.org>
Subject: PERFORCE change 10849 for review
To: Perforce Change Reviews <perforce@freebsd.org>
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http://people.freebsd.org/~peter/p4db/chv.cgi?CH=10849

Change 10849 by tmm@tmm_sparc64 on 2002/05/05 15:17:05

	Perform a full reset on RX/TX error conditions; failing to do so
	seems to cause stalls under some circumstances.
	
	Reported, proposed and tested by:	phk

Affected files ...

... //depot/projects/sparc64/sys/dev/gem/if_gem.c#14 edit

Differences ...

==== //depot/projects/sparc64/sys/dev/gem/if_gem.c#14 (text+ko) ====

@@ -1610,11 +1610,15 @@
 		int txstat = bus_space_read_4(t, seb, GEM_MAC_TX_STATUS);
 		if (txstat & ~GEM_MAC_TX_XMIT_DONE)
 			printf("MAC tx fault, status %x\n", txstat);
+		if (txstat & (GEM_MAC_TX_UNDERRUN | GEM_MAC_TX_PKT_TOO_LONG))
+			gem_init(sc);
 	}
 	if (status & GEM_INTR_RX_MAC) {
 		int rxstat = bus_space_read_4(t, seb, GEM_MAC_RX_STATUS);
 		if (rxstat & ~(GEM_MAC_RX_DONE | GEM_MAC_RX_FRAME_CNT))
 			printf("MAC rx fault, status %x\n", rxstat);
+		if ((rxstat & GEM_MAC_RX_OVERFLOW) != 0)
+			gem_init(sc);
 	}
 }
 

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