linux-kernel - Re: [PATCH v7 3/3] PCI: uniphier: Add misc interrupt handler to invoke PME and AER

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Message-ID: <20201007164555.GA359326@bogus>
Date:   Wed, 7 Oct 2020 11:45:55 -0500
From:   Rob Herring <robh@...nel.org>
To:     Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
Cc:     Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-arm-kernel@...ts.infradead.org,
        Marc Zyngier <maz@...nel.org>, linux-pci@...r.kernel.org,
        Jingoo Han <jingoohan1@...il.com>,
        Masami Hiramatsu <masami.hiramatsu@...aro.org>
Subject: Re: [PATCH v7 3/3] PCI: uniphier: Add misc interrupt handler to
 invoke PME and AER

On Fri, 11 Sep 2020 18:33:34 +0900, Kunihiko Hayashi wrote:
> This patch adds misc interrupt handler to detect and invoke PME/AER event.
> 
> In UniPhier PCIe controller, PME/AER signals are assigned to the same
> signal as MSI by the internal logic. These signals should be detected by
> the internal register, however, DWC MSI handler can't handle these signals.
> 
> DWC MSI handler calls .msi_host_isr() callback function, that detects
> PME/AER signals with the internal register and invokes the interrupt
> with PME/AER vIRQ numbers.
> 
> These vIRQ numbers is obtained from portdrv in uniphier_add_pcie_port()
> function.
> 
> Cc: Marc Zyngier <maz@...nel.org>
> Cc: Jingoo Han <jingoohan1@...il.com>
> Cc: Gustavo Pimentel <gustavo.pimentel@...opsys.com>
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
> ---
>  drivers/pci/controller/dwc/pcie-uniphier.c | 77 +++++++++++++++++++++++++-----
>  1 file changed, 66 insertions(+), 11 deletions(-)
> 

Reviewed-by: Rob Herring <robh@...nel.org>