firmware: arm_scmi: Make use SCMI v2.0 fastchannel for performance protocol

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SCMI v2.0 adds support for "FastChannel" which do not use a message
header as they are specialized for a single message.

Only PERFORMANCE_LIMITS_{SET,GET} and PERFORMANCE_LEVEL_{SET,GET}
commands are supported over fastchannels. As they are optional, they
need to be discovered by PERFORMANCE_DESCRIBE_FASTCHANNEL command.
Further {LIMIT,LEVEL}_SET commands can have optional doorbell support.

Add support for making use of these fastchannels.

Cc: Ionela Voinescu <Ionela.Voinescu@arm.com>
Cc: Chris Redpath <Chris.Redpath@arm.com>
Cc: Quentin Perret <Quentin.Perret@arm.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

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This commit is contained in:

Sudeep Holla 2019-07-08 09:41:17 +01:00

parent ac8aaf348c

commit 823839571d

1 changed files with 99 additions and 4 deletions

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103

drivers/firmware/arm_scmi/perf.c

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