[PATCH v5 29/34] arm_mpam: Probe for long/lwd mbwu counters

[Fenghua Yu]

On 11/17/25 09:00, Ben Horgan wrote:
> From: Rohit Mathew <rohit.mathew at arm.com>
> 
> mpam v0.1 and versions above v1.0 support optional long counter for
> memory bandwidth monitoring. The MPAMF_MBWUMON_IDR register has fields
> indicating support for long counters.
> 
> Probe these feature bits.
> 
> The mpam_feat_msmon_mbwu feature is used to indicate that bandwidth
> monitors are supported, instead of muddling this with which size of
> bandwidth monitors, add an explicit 31 bit counter feature.
> 
> Signed-off-by: Rohit Mathew <rohit.mathew at arm.com>
> [ morse: Added 31bit counter feature to simplify later logic ]
> Signed-off-by: James Morse <james.morse at arm.com>
> Reviewed-by: Ben Horgan <ben.horgan at arm.com>
> Reviewed-by: Jonathan Cameron <jonathan.cameron at huawei.com>
> Reviewed-by: Gavin Shan <gshan at redhat.com>
> Tested-by: Fenghua Yu <fenghuay at nvidia.com>
> Tested-by: Shaopeng Tan <tan.shaopeng at jp.fujitsu.com>
> Tested-by: Peter Newman <peternewman at google.com>
> Tested-by: Carl Worth <carl at os.amperecomputing.com>
> Tested-by: Gavin Shan <gshan at redhat.com>
> Tested-by: Zeng Heng <zengheng4 at huawei.com>
> Signed-off-by: Ben Horgan <ben.horgan at arm.com>

Reviewed-by: Fenghua Yu <fenghuay at nvidia.com>

Thanks.

-Fenghua