From: khalasa@piap.pl (Krzysztof Hałasa)
To: Tim Harvey <tharvey@gateworks.com>
Cc: "Lucas Stach" <l.stach@pengutronix.de>,
"Fabio Estevam" <festevam@gmail.com>,
"Petr Štetiar" <ynezz@true.cz>,
"Richard Zhu" <Richard.Zhu@freescale.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity
Date: Mon, 04 Apr 2016 12:37:07 +0200 [thread overview]
Message-ID: <m337r1irsc.fsf@t19.piap.pl> (raw)
In-Reply-To: <CAJ+vNU0iKSXrKmA6jzdw5R5K3TnR3qftVn-8Ou5chHdz5aTpTA@mail.gmail.com> (Tim Harvey's message of "Thu, 31 Mar 2016 09:19:31 -0700")
Tim,
> So perhaps there is something else going on with the tw8689
> device/driver that is causing it to not work with MSI. We have an
> avc8000 miniPCIe with tw8689 here and can test if you send me your
> patches that enable tw8689 with msi.
I think you can use this:
http://git.linuxtv.org/hverkuil/media_tree.git/log/?h=tw686x
> Regardless of MSI working in our tests we still disable it because of
> it breaking legacy irqs and for performance reasons.
So do I. However I'm also using Fedora 23 and this means I have to
recompile the kernel, since they build it with MSI enabled.
I think we should fix it, either by disabling in run time, or making it
work.
Performance-wise, I found it "surprising" that one can't have multiple
MSIs with separate hw vector for each.
--
Krzysztof Halasa
Industrial Research Institute for Automation and Measurements PIAP
Al. Jerozolimskie 202, 02-486 Warsaw, Poland
WARNING: multiple messages have this Message-ID (diff)
From: khalasa@piap.pl (Krzysztof Hałasa)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity
Date: Mon, 04 Apr 2016 12:37:07 +0200 [thread overview]
Message-ID: <m337r1irsc.fsf@t19.piap.pl> (raw)
In-Reply-To: <CAJ+vNU0iKSXrKmA6jzdw5R5K3TnR3qftVn-8Ou5chHdz5aTpTA@mail.gmail.com> (Tim Harvey's message of "Thu, 31 Mar 2016 09:19:31 -0700")
Tim,
> So perhaps there is something else going on with the tw8689
> device/driver that is causing it to not work with MSI. We have an
> avc8000 miniPCIe with tw8689 here and can test if you send me your
> patches that enable tw8689 with msi.
I think you can use this:
http://git.linuxtv.org/hverkuil/media_tree.git/log/?h=tw686x
> Regardless of MSI working in our tests we still disable it because of
> it breaking legacy irqs and for performance reasons.
So do I. However I'm also using Fedora 23 and this means I have to
recompile the kernel, since they build it with MSI enabled.
I think we should fix it, either by disabling in run time, or making it
work.
Performance-wise, I found it "surprising" that one can't have multiple
MSIs with separate hw vector for each.
--
Krzysztof Halasa
Industrial Research Institute for Automation and Measurements PIAP
Al. Jerozolimskie 202, 02-486 Warsaw, Poland
next prev parent reply other threads:[~2016-04-04 10:37 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-25 13:32 [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity Krzysztof Hałasa
2016-03-25 13:32 ` Krzysztof Hałasa
2016-03-27 14:44 ` Fabio Estevam
2016-03-27 14:44 ` Fabio Estevam
2016-03-28 0:26 ` Fabio Estevam
2016-03-28 0:26 ` Fabio Estevam
2016-03-28 19:59 ` Tim Harvey
2016-03-28 19:59 ` Tim Harvey
2016-03-28 20:13 ` Fabio Estevam
2016-03-28 20:13 ` Fabio Estevam
2016-03-28 20:42 ` Tim Harvey
2016-03-28 20:42 ` Tim Harvey
2016-03-28 21:30 ` Fabio Estevam
2016-03-28 21:30 ` Fabio Estevam
2016-03-28 22:06 ` Tim Harvey
2016-03-28 22:06 ` Tim Harvey
2016-03-28 22:13 ` Fabio Estevam
2016-03-28 22:13 ` Fabio Estevam
2016-03-29 5:40 ` Krzysztof Hałasa
2016-03-29 5:40 ` Krzysztof Hałasa
2016-03-29 5:43 ` Krzysztof Hałasa
2016-03-29 5:43 ` Krzysztof Hałasa
2016-03-29 5:29 ` Krzysztof Hałasa
2016-03-29 5:29 ` Krzysztof Hałasa
2016-03-29 8:55 ` Lucas Stach
2016-03-29 8:55 ` Lucas Stach
2016-03-29 10:39 ` Krzysztof Hałasa
2016-03-29 10:39 ` Krzysztof Hałasa
2016-03-29 10:55 ` Lucas Stach
2016-03-29 10:55 ` Lucas Stach
2016-03-29 13:12 ` Arnd Bergmann
2016-03-29 13:12 ` Arnd Bergmann
2016-03-29 13:32 ` Tim Harvey
2016-03-29 13:32 ` Tim Harvey
2016-03-29 13:52 ` Arnd Bergmann
2016-03-29 13:52 ` Arnd Bergmann
2016-03-29 14:29 ` Tim Harvey
2016-03-29 14:29 ` Tim Harvey
2016-03-29 14:50 ` Arnd Bergmann
2016-03-29 14:50 ` Arnd Bergmann
2016-03-29 15:10 ` Tim Harvey
2016-03-29 15:10 ` Tim Harvey
2016-03-29 15:24 ` Arnd Bergmann
2016-03-29 15:24 ` Arnd Bergmann
2016-03-29 17:38 ` Tim Harvey
2016-03-29 17:38 ` Tim Harvey
2016-03-29 19:39 ` Arnd Bergmann
2016-03-29 19:39 ` Arnd Bergmann
2016-03-29 17:56 ` Marc Zyngier
2016-03-29 17:56 ` Marc Zyngier
2016-03-29 16:13 ` Roberto Fichera
2016-03-29 16:13 ` Roberto Fichera
2016-03-29 16:40 ` Tim Harvey
2016-03-29 16:40 ` Tim Harvey
2016-03-29 16:44 ` Roberto Fichera
2016-03-29 16:44 ` Roberto Fichera
2016-03-29 17:31 ` Tim Harvey
2016-03-29 17:31 ` Tim Harvey
2016-03-30 8:00 ` Roberto Fichera
2016-03-30 8:00 ` Roberto Fichera
2016-03-30 10:10 ` Arnd Bergmann
2016-03-30 10:10 ` Arnd Bergmann
2016-03-30 12:50 ` Roberto Fichera
2016-03-30 12:50 ` Roberto Fichera
2016-03-30 13:38 ` Tim Harvey
2016-03-30 13:38 ` Tim Harvey
2016-03-30 15:20 ` Roberto Fichera
2016-03-30 15:20 ` Roberto Fichera
2016-03-30 8:10 ` Krzysztof Hałasa
2016-03-30 8:10 ` Krzysztof Hałasa
2016-03-31 16:19 ` Tim Harvey
2016-03-31 16:19 ` Tim Harvey
2016-04-04 10:37 ` Krzysztof Hałasa [this message]
2016-04-04 10:37 ` Krzysztof Hałasa
2016-03-29 14:14 ` Fabio Estevam
2016-03-29 14:14 ` Fabio Estevam
2016-03-29 5:21 ` Krzysztof Hałasa
2016-03-29 5:21 ` Krzysztof Hałasa
2016-03-30 12:06 ` Petr Štetiar
2016-03-30 12:06 ` Petr Štetiar
2016-03-30 12:45 ` Fabio Estevam
2016-03-30 12:45 ` Fabio Estevam
2016-03-30 14:38 ` Marcel Ziswiler
2016-03-30 14:38 ` Marcel Ziswiler
2016-03-30 14:38 ` Marcel Ziswiler
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