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author | Jason Gunthorpe <jgunthorpe@obsidianresearch.com> | 2010-03-09 09:17:42 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2010-03-17 04:23:42 (GMT) |
commit | abf35df21513c51d7761c41fa6d3b819cdf4103e (patch) | |
tree | 3152b04190035149aba67936ef0cff81cc6af3a0 /drivers/message | |
parent | 23606cf5d1192c2b17912cb2ef6e62f9b11de133 (diff) | |
download | linux-fsl-qoriq-abf35df21513c51d7761c41fa6d3b819cdf4103e.tar.xz |
NET: Support clause 45 MDIO commands at the MDIO bus level
IEEE 802.3ae clause 45 specifies a somewhat modified MDIO protocol
for use by 10GIGE phys. The main change is a 21 bit address split into
a 5 bit device ID and a 16 bit register offset. The definition is designed
so that normal and extended devices can run on the same MDIO bus.
Extend mdio-bitbang to do the new protocol. At the MDIO bus level the
protocol is requested by or'ing MII_ADDR_C45 into the register offset.
Make phy_read/phy_write/etc pass a full 32 bit register offset.
This does not attempt to make the phy layer support C45 style PHYs, just
to provide the MDIO bus support.
Tested against a Broadcom 10GE phy with ID 0x206034, and several
Broadcom 10/100/1000 Phys in normal mode.
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/message')
0 files changed, 0 insertions, 0 deletions