From: Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com>
To: Janusz Dziedzic <janusz.dziedzic@tieto.com>,
"ath10k@lists.infradead.org" <ath10k@lists.infradead.org>
Subject: Re: qca99x0 don't work with MSI-X supported/enabled
Date: Wed, 16 Sep 2015 15:09:19 +0530 [thread overview]
Message-ID: <55F938C7.30605@qti.qualcomm.com> (raw)
In-Reply-To: <CALhHN=r_z7phVTuA=5DZ6sq18nqdy_UMYRh679rbL1n_43bAAQ@mail.gmail.com>
On Wednesday 16 September 2015 01:24 PM, Janusz Dziedzic wrote:
> Hello,
>
> Seems in case of qca99x0 we request
>
> .msi_assign_ce_max = 12
>
> Next in case PC support MSI-X we fail when registering CE interrupts
> with error msg:
> ath10k_pci 0000:04:00.0: failed to request MSI-X ce irq 50: -22
>
>
> Seems my linux limit max MSI-X to 8, so we should not request irq per CE?
> BTW are CE8 .. CE11 used by the driver ? Or we can setup msi_assign_ce_max = 7?
CE8 is used by the driver to get pktlog information. Currently we are using
7 CEs actively. When copy engine fast path to skip htc layer is added, CE5
will also be used, so it is going to be 8 active CEs. If this would fail
for MSI-X, may be we need to disable MSI-X for qca99x0?.
Vasanth
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prev parent reply other threads:[~2015-09-16 9:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-16 7:54 qca99x0 don't work with MSI-X supported/enabled Janusz Dziedzic
2015-09-16 9:39 ` Vasanthakumar Thiagarajan [this message]
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