[TG3]: 40-bit DMA workaround part 2

The 40-bit DMA workaround recently implemented for 5714, 5715, and
5780 needs to be expanded because there may be other tg3 devices
behind the EPB Express to PCIX bridge in the 5780 class device.

For example, some 4-port card or mother board designs have 5704 behind
the 5714.

All devices behind the EPB require the 40-bit DMA workaround.

Thanks to Chris Elmquist again for reporting the problem and testing
the patch.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 7f4b7f6ac40d..7e3b613afb29 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2163,6 +2163,7 @@ struct tg3 {
 #define TG3_FLAG_10_100_ONLY            0x01000000
 #define TG3_FLAG_PAUSE_AUTONEG          0x02000000
 #define TG3_FLAG_IN_RESET_TASK          0x04000000
+#define TG3_FLAG_40BIT_DMA_BUG          0x08000000
 #define TG3_FLAG_BROKEN_CHECKSUMS       0x10000000
 #define TG3_FLAG_GOT_SERDES_FLOWCTL     0x20000000
 #define TG3_FLAG_SPLIT_MODE             0x40000000