From: Marc Zyngier <marc.zyngier@arm.com>
To: Alexander Stein <alexander.stein@systec-electronic.com>,
linux-kernel@vger.kernel.org
Cc: Minghuan Lian <Minghuan.Lian@nxp.com>,
linux-arm-kernel@lists.infradead.org,
Thomas Gleixner <tglx@linutronix.de>,
Jason Cooper <jason@lakedaemon.net>, Roy Zang <roy.zang@nxp.com>,
Mingkai Hu <mingkai.hu@nxp.com>,
Stuart Yoder <stuart.yoder@nxp.com>,
Yang-Leo Li <leoyang.li@nxp.com>
Subject: Re: [PATCH 2/2 v5] irqchip/Layerscape: Add SCFG MSI controller support
Date: Wed, 23 Mar 2016 11:08:04 +0000 [thread overview]
Message-ID: <56F27914.3080908@arm.com> (raw)
In-Reply-To: <7239962.9Fyo0vfqsc@ws-stein>
On 23/03/16 09:18, Alexander Stein wrote:
> On Monday 07 March 2016 11:36:22, Minghuan Lian wrote:
>> Some kind of NXP Layerscape SoC provides a MSI
>> implementation which uses two SCFG registers MSIIR and
>> MSIR to support 32 MSI interrupts for each PCIe controller.
>> The patch is to support it.
>>
>> Signed-off-by: Minghuan Lian <Minghuan.Lian@nxp.com>
>
> Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
>
> Using an intel e1000e card which uses 3 MSIs. But the IRQ numbers are a bit strange though:
>> grep eth3 /proc/interrupts
>>
>> 63: 49 0 MSI 134742016 Edge eth3-rx-0
>> 64: 3 0 MSI 134742017 Edge eth3-tx-0
>> 65: 4 0 MSI 134742018 Edge eth3
This is a virtual interrupt number (despite being displayed as a hwirq),
computed from the PCI requester ID and the MSI index. You shouldn't
infer anything from it.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2016-03-23 11:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-07 3:36 [PATCH 1/2 v5] dt/bindings: Add bindings for Layerscape SCFG MSI Minghuan Lian
2016-03-07 3:36 ` [PATCH 2/2 v5] irqchip/Layerscape: Add SCFG MSI controller support Minghuan Lian
2016-03-07 9:50 ` Marc Zyngier
2016-04-22 5:33 ` Leo Li
2016-04-22 7:43 ` Marc Zyngier
2016-04-22 7:53 ` Minghuan Lian
2016-04-22 7:58 ` Marc Zyngier
2016-03-23 9:18 ` Alexander Stein
2016-03-23 10:50 ` Minghuan Lian
2016-03-23 11:08 ` Marc Zyngier [this message]
2016-03-23 11:19 ` Alexander Stein
2016-03-23 11:36 ` Marc Zyngier
2016-03-09 8:57 ` [PATCH 1/2 v5] dt/bindings: Add bindings for Layerscape SCFG MSI Minghuan Lian
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