gianfar: Add backwards compatible Single Queue mode polling

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Older Single Queue (SQ_SG_MODE) devices like TSEC (i.e. mpc83xx)
don't feature the frame receive indication bits (RXF) in RSTAT.
For these and for the rest of the SQ_SG_MODE devices, provide the
appropiate polling routine that handles a single pair of Rx/Tx
BD rings, removing the overhead incurred by the multiple queues/
multiple interrupt group devices (veTSEC/ eTSEC2.0 devices).
So this is primarily a fix for the TSEC devices.

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Claudiu Manoil 2013-06-10 20:19:48 +03:00 • committed by David S. Miller

parent 6602041b83

commit 5eaedf3131

1 changed files with 49 additions and 2 deletions

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drivers/net/ethernet/freescale/gianfar.c

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