[Skiboot] [PATCH] hw/phb3: Increase AIB TX command credit for DMA read in CAPP DMA mode

Stewart Smith stewart at linux.vnet.ibm.com
Mon Jul 25 12:11:17 AEST 2016

Andrew Donnellan <andrew.donnellan at au1.ibm.com> writes:
> On 07/07/16 17:22, Andrew Donnellan wrote:
>> When enabling CAPI in DMA mode, set the AIB TX command credits for channel
>> 2 (DMA read) to 28, rather than 1. This significantly improves DMA read
>> performance in CAPI DMA mode.
>> Fixes: 5477148a439f ("phb3: Add support for CAPP DMA mode")
>> Reported-by: John Walthour <jwalthour at us.ibm.com>
>> Reported-by: Ricardo Mata <ricmata at us.ibm.com>
>> Reported-by: Michael Perez <perezma at us.ibm.com>
>> Cc: Ian Munsie <imunsie at au1.ibm.com>
>> Signed-off-by: Andrew Donnellan <andrew.donnellan at au1.ibm.com>
> Looks like this missed 5.3.0-rc1... Stewart can this be considered for 
> the 5.3.0 release?


Stewart Smith
OPAL Architect, IBM.

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