openslx-ng/ipxe.git/src/drivers/infiniband, branch v1.0.0

[linda] Re-import the latest register definitions

2009-11-16T22:22:12+00:00

Two registers have been renamed, and a bugfix to qib_genbits.pl removes a harmless excess padding field.

[susieq] Update qib_genbits.pl to handle SusieQ definitions

2009-11-16T22:21:56+00:00

The latest RTL-generated register lists include (mostly redundant) xxx_MSB values alongside xxx_LSB and xxx_RMASK, and also include default register values.

[linda] Wait up to 20us for link state to update

2009-11-16T22:19:39+00:00

Some subnet managers expect the GetResponse from a SetPortInfo MAD to contain the new link state. The transition is not immediate, so we often end up returning the previous link state. This can cause the SM to fail to activate the port. Fix by waiting for up to 20us for the link state transition to take effect.

[hermon] Reset device during probe()

2009-10-14T01:11:16+00:00

Some systems will retry their boot sequence in the event of a boot failure. On these systems, the second and subsequent boot attempts will fail to initialise the Hermon HCA. Fix by resetting the HCA during probe(). This incurs a one-second cost, but there seems to be no viable alternative. Originally-fixed-by: Itay Gazit

[hermon] Reduce the RC ACK timeout

2009-08-10T21:22:42+00:00

The ACK timeout determines how long we take to notice a failed Reliable Connection. Reducing it from the arbitrary value of 19 down to 14 reduces the individual ACK timeout from around 2.1s to 67ms; this in turn reduces the time to tear down and re-establish a broken SRP session from around 30s to around 1s.

[hermon] Randomise the high-order bits of queue pair numbers

2009-08-10T21:19:39+00:00

The Infiniband Communication Manager will refuse to establish a connection if it believes the connection is already established. There is no immediately obvious way to ask it to tear down the existing connection and replace it; to issue a DREP we would need to know the local and remote communication IDs used for the previous connection setup. We can work around this by randomising the high-order bits of the queue pair number; these have no significance to the hardware, but are sufficient to convince the IB CM that this is a different connection.

[infiniband] Update subnet management agent to use a management interface

2009-08-08T22:55:29+00:00

[hermon] Allow for multiple calls to ib_modify_qp()

2009-08-08T22:49:59+00:00

[hermon] Add support for multiple ports and detecting non-IB ports

2009-08-06T00:55:38+00:00

Originally-fixed-by: Itay Gazit

[infiniband] Change IB_{QPN,QKEY,QPT} names from {SMA,GMA} to {SMI,GSI}

2009-08-06T00:24:18+00:00

The IBA specification refers to management "interfaces" and "agents". The interface is the component that connects to the queue pair and sends and receives MADs; the agent is the component that constructs the reply to the MAD. Rename the IB_{QPN,QKEY,QPT} constants as a first step towards making this separation in gPXE.