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| author | Samuel Mendoza-Jonas <sam@mendozajonas.com> | 2019-06-18 11:37:17 +1000 |
|---|---|---|
| committer | Joe Hershberger <joe.hershberger@ni.com> | 2020-03-09 18:11:23 -0500 |
| commit | f641a8ac93e0c0179fe6f73429812af228109ff2 (patch) | |
| tree | 68a93215ff4583635f66615c090823488bedeb54 /include/phy.h | |
| parent | 4b7f5f3e75841b115caacef5983a9cc681521ec7 (diff) | |
| download | u-boot-f641a8ac93e0c0179fe6f73429812af228109ff2.tar.gz | |
phy: Add support for the NC-SI protocol
This introduces support for the NC-SI protocol, modelled as a phy driver
for other ethernet drivers to consume.
NC-SI (Network Controller Sideband Interface) is a protocol to manage a
sideband connection to a proper network interface, for example a BMC
(Baseboard Management Controller) sharing the NIC of the host system.
Probing and configuration occurs by communicating with the "remote" NIC
via NC-SI control frames (Ethernet header 0x88f8).
This implementation is roughly based on the upstream Linux
implementation[0], with a reduced feature set and an emphasis on getting
a link up as fast as possible rather than probing the full possible
topology of the bus.
The current phy model relies on the network being "up", sending NC-SI
command frames via net_send_packet() and receiving them from the
net_loop() loop (added in a following patch).
The ncsi-pkt.h header[1] is copied from the Linux kernel for consistent
field definitions.
[0]: https://github.com/torvalds/linux/tree/master/net/ncsi
[1]: https://github.com/torvalds/linux/blob/master/net/ncsi/ncsi-pkt.h
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'include/phy.h')
| -rw-r--r-- | include/phy.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/phy.h b/include/phy.h index 42cfc59ec0..400ca25a35 100644 --- a/include/phy.h +++ b/include/phy.h @@ -18,6 +18,8 @@ #include <phy_interface.h> #define PHY_FIXED_ID 0xa5a55a5a +#define PHY_NCSI_ID 0xbeefcafe + /* * There is no actual id for this. * This is just a dummy id for gmii2rgmmi converter. |