linux-toradex.git/drivers/net/sfc/workarounds.h, branch v3.0-rc4

sfc: Siena: Disable write-combining when SR-IOV is enabled

2011-03-23T01:35:15+00:00

If SR-IOV is enabled by firmware, even if it is not enabled in the PCI
capability, TX pushes using write-combining may be corrupted.

We want to know whether it is enabled before mapping the NIC
registers, and even if PCI extended capabilities are not accessible.
Therefore, we look for the MSI capability, which is removed if SR-IOV
is enabled.

Signed-off-by: Ben Hutchings

sfc: Update copyright dates

2011-02-28T23:57:24+00:00

Signed-off-by: Ben Hutchings

sfc: Remove support for SFN4111T, SFT9001 and Falcon GMAC

2010-09-22T20:26:45+00:00

SFN4111T never reached production and is not being used for internal
or customer testing.

Since we have no production Falcon boards using the SFT9001 or the
GMAC, remove support for them as well.

Signed-off-by: Ben Hutchings 
Signed-off-by: David S. Miller

sfc: Workaround flush failures on Falcon B0

2010-06-02T09:21:06+00:00

Under certain conditions a PHY may backpressure Falcon B0
in such a way that flushes timeout. In normal circumstances
the phy poller would fix the PHY, and the flush could complete.

But efx_nic_flush_queues() is always called after efx_stop_all(),
so the poller has been stopped. Even if this weren't the case,
how long would we have to wait for the poller to fix this? And
several callers of efx_nic_flush_queues() are about to reset
the device anyway - so we don't need to do anything.

Work around this bug by scheduling a reset. Ensure that the
MAC is never rewired back into the datapath before the reset
runs (we already ignore all rx events anyway).

Signed-off-by: Ben Hutchings 
Signed-off-by: David S. Miller

sfc: Extend the legacy interrupt workarounds

2010-04-28T19:44:35+00:00

Siena has two problems with legacy interrupts:
  1. There is no synchronisation between the ISR read completion,
     and the interrupt deassert message.
  2. A downstream read at the "wrong" moment can return 0, and
     suppress generating the next interrupt.

Falcon should suffer from both of these, and it appears it does.
Enable EFX_WORKAROUND_15783 on Falcon as well.

Also, when we see queues == 0, ensure we always schedule or rearm
every event queue.

Signed-off-by: Ben Hutchings 
Signed-off-by: David S. Miller

sfc: Update version, copyright dates, authors

2009-11-30T01:23:58+00:00

This driver has been mostly rewritten since Michael Brown's initial
work, so swap the order of the authors.

Signed-off-by: Ben Hutchings 
Signed-off-by: David S. Miller

sfc: Add support for SFC9000 family (2)

2009-11-30T01:23:57+00:00

This integrates support for the SFC9000 family of 10G Ethernet
controllers and LAN-on-motherboard chips, starting with the SFL9021
'Siena' and SFC9020 'Bethpage'.

Credit for this code is largely due to my colleagues at Solarflare:

   Guido Barzini
   Steve Hodgson
   Kieran Mansley
   Matthew Slattery
   Neil Turton

Signed-off-by: Ben Hutchings 
Signed-off-by: David S. Miller

sfc: Decouple NIC revision number from Falcon PCI revision number

2009-11-29T07:58:54+00:00

Signed-off-by: Ben Hutchings 
Signed-off-by: David S. Miller

sfc: Remove another unused workaround macro

2009-11-29T07:58:53+00:00

Signed-off-by: Ben Hutchings 
Signed-off-by: David S. Miller

sfc: Remove EFX_WORKAROUND_9141 macro

2009-11-29T07:58:52+00:00

The "bug9141 workaround" of setting TX_FLUSH_MIN_LEN_EN should really
be considered as a normal bit of configuration rather than a
workaround.

Signed-off-by: Ben Hutchings 
Signed-off-by: David S. Miller