The sis191 is the gigabit brother of the sis190. SiS's driver suggests
that the register set is backward compatible: this should hopefully
give a basic driver.

The device should allow the usual features from a modern ethernet
adapter (802.1q, SG, Jumbo frames, TSO, checksum offload). So far
the relevant register layout is not documented. SiS's driver does
not provide these features either (at least not for Linux).
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Don't ask.
The patch is based on SiS's GPLed driver.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

This patch does three things:
- widen the access to the StationControl register (note the SIS_W16
  versus SIS_W32 change);
- default to 10Mbps half duplex when the LPA can not be evaluated
  (reg31->ctl is identical for both). It can be argued that it makes
  sense as the lowest common denominator when everything else failed.
  Btw it works better than the current code. :o)
- remove some enums: they do not document anymore.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Extracted from SiS's GPLed driver. From the few pdf available at SiS's,
it seems that the 965 and the 966 south bridge include this interface
whereas the 965L (and anything below) does not. It is expected to be a
sis191 related feature and should not hurt the existing sis190 driver.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

link changes reporting does not work when the driver masks its irq event
Signed-off-by: NArnaud Patard <apatard@mandriva.com>
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

The userspace must not be able to issue ethtool command and manage the
mii before it is completely initialized. Avoid some pesky "eth%d" messages.
Signed-off-by: NArnaud Patard <apatard@mandriva.com>
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

The station control register must depend on both the advertisement and the lpa

The link partner ability has better be intersected with the current
advertised value before it is feed to the station control register.
Sight-catched-by: NLars Vahlenberg <lars.vahlenberg@gmail.com>
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Added PHY identifier for the Asus K8S-MX motherboard

Note: the same ID appears in the sis900 driver.
Signed-off-by: NLars Vahlenberg <lars.vahlenberg@gmail.com>
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

New PHY detection code.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Add a dummy read before accessing the status register

SiS driver suggests it.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Allow a non-hardcoded ID for the PHY

This is the first step before the driver probes for the PHY address.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Add endian annotations.
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

extract bits definition from SiS driver

- fix the Rx stats;
- minor pieces of documentation.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Add a restriction to the size of the Rx buffer

SiS driver forces the size of any Rx buffer to be a multiple of 64 bit.
I would not be surprized that it goes along with some alignment issues
which have been experienced before. So far it does not make much of a
difference (both drivers use 1536 bytes buffer).
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Extract some mac addr code from SiS's driver.

Some magic may hide beyond the isa bridge. The Rx mac control
register is now set without condition.

Note: good or bad, this part of the code is quite close to sis900.c.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Replace hardcoded constants by enumerated values in sis190_read_eeprom

The names of the enumerated values have been extracted from SiS'official
driver (v1.00.00 published on 2005/07/11).
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Merge some register related information from SiS driver.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

ethtool/mii support

Bug: disabling autonegotiation and setting the link parameters at the
same time does not provide the expected result. More investigation is
needed.

Note: past the initial probe/open time, the link is managed from user-space
or accessed through sis190_phy_task, i.e. in a usermode context. Whence the
very limited locking needs.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

netconsole support.

This stuff should be factored out of every driver.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Raise the sis190 driver from the dead

The driver handles the integrated network device found on SiS 965L
chipset. It follows the classical (non-napi) interrupt-driven model
and provides minimal ethtool support.

The code comes from a heavy cleanup/rewrite of the original code
which was removed from the kernel on 14/04/2004. Since the r8169
driver does not work too bad and there will probably be (at least)
a few months of improvements/testing/fixing, I made the code as
close as possible to the r8169 one.

Pascal Chapperon <pascal.chapperon@wanadoo.fr> deserves some special
credit for testing and bug-catching. Many thanks to Lars Vahlenberg
as well.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>