From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
Frank Wunderlich <frank-w@public-files.de>,
Thierry Reding <treding@nvidia.com>,
Thomas Gleixner <tglx@linutronix.de>,
Rob Herring <robh@kernel.org>, Will Deacon <will@kernel.org>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Michael Kelley <mikelley@microsoft.com>,
Wei Liu <wei.liu@kernel.org>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Ryder Lee <ryder.lee@mediatek.com>,
Marek Vasut <marek.vasut+renesas@gmail.com>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
Michal Simek <michal.simek@xilinx.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Bharat Kumar Gogada <bharatku@xilinx.com>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-hyperv@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-mediatek@lists.infradead.org,
linux-renesas-soc@vger.kernel.org, kernel-team@android.com
Subject: Re: [PATCH v3 03/14] PCI: rcar: Convert to MSI domains
Date: Thu, 1 Apr 2021 12:03:01 +0100 [thread overview]
Message-ID: <20210401110301.GA31407@lpieralisi> (raw)
In-Reply-To: <87y2e2p9wk.wl-maz@kernel.org>
On Thu, Apr 01, 2021 at 11:38:19AM +0100, Marc Zyngier wrote:
> On Thu, 01 Apr 2021 11:19:57 +0100,
> Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> wrote:
> >
> > On Tue, Mar 30, 2021 at 04:11:34PM +0100, Marc Zyngier wrote:
> >
> > [...]
> >
> > > +static void rcar_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
> > > +{
> > > + struct rcar_msi *msi = irq_data_get_irq_chip_data(data);
> > > + unsigned long pa = virt_to_phys(msi);
> > >
> > > - hwirq = rcar_msi_alloc_region(msi, nvec);
> > > - if (hwirq < 0)
> > > - return -ENOSPC;
> > > + /* Use the msi structure as the PA for the MSI doorbell */
> > > + msg->address_lo = lower_32_bits(pa);
> > > + msg->address_hi = upper_32_bits(pa);
> >
> > I don't think this change is aligned with the previous patch (is it ?),
> > the PA address we are using here is different from the one programmed
> > into the controller registers - either that or I am missing something,
> > please let me know.
>
> Err. You are right. This looks like a bad case of broken conflict
> resolution on my part.
>
> The following snippet should fix it. Let me know if you want me to
> resend the whole thing or whether you are OK with applying this by
> hand.
I will apply it and merge the whole series into -next, thanks for
implementing it !
Lorenzo
> Thanks,
>
> M.
>
> diff --git a/drivers/pci/controller/pcie-rcar-host.c b/drivers/pci/controller/pcie-rcar-host.c
> index f7331ad0d6dc..765cf2b45e24 100644
> --- a/drivers/pci/controller/pcie-rcar-host.c
> +++ b/drivers/pci/controller/pcie-rcar-host.c
> @@ -573,11 +573,10 @@ static int rcar_msi_set_affinity(struct irq_data *d, const struct cpumask *mask,
> static void rcar_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
> {
> struct rcar_msi *msi = irq_data_get_irq_chip_data(data);
> - unsigned long pa = virt_to_phys(msi);
> + struct rcar_pcie *pcie = &msi_to_host(msi)->pcie;
>
> - /* Use the msi structure as the PA for the MSI doorbell */
> - msg->address_lo = lower_32_bits(pa);
> - msg->address_hi = upper_32_bits(pa);
> + msg->address_lo = rcar_pci_read_reg(pcie, PCIEMSIALR) & ~MSIFE;
> + msg->address_hi = rcar_pci_read_reg(pcie, PCIEMSIAUR);
> msg->data = data->hwirq;
> }
>
>
> --
> Without deviation from the norm, progress is not possible.
next prev parent reply other threads:[~2021-04-01 11:04 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-30 15:11 [PATCH v3 00/14] PCI/MSI: Getting rid of msi_controller, and other cleanups Marc Zyngier
2021-03-30 15:11 ` [PATCH v3 01/14] PCI: tegra: Convert to MSI domains Marc Zyngier
2021-04-19 19:19 ` Jon Hunter
2021-04-19 20:02 ` Jon Hunter
[not found] ` <87fszlqria.wl-maz@kernel.org>
2021-04-20 12:45 ` Jon Hunter
2021-03-30 15:11 ` [PATCH v3 02/14] PCI: rcar: Don't allocate extra memory for the MSI capture address Marc Zyngier
2021-03-30 15:28 ` Lorenzo Pieralisi
2021-04-01 10:59 ` Yoshihiro Shimoda
2021-03-30 15:11 ` [PATCH v3 03/14] PCI: rcar: Convert to MSI domains Marc Zyngier
2021-04-01 10:19 ` Lorenzo Pieralisi
2021-04-01 10:38 ` Marc Zyngier
2021-04-01 11:03 ` Lorenzo Pieralisi [this message]
2021-03-30 15:11 ` [PATCH v3 04/14] PCI: xilinx: Don't allocate extra memory for the MSI capture address Marc Zyngier
2021-03-30 15:11 ` [PATCH v3 05/14] PCI: xilinx: Convert to MSI domains Marc Zyngier
2021-03-30 15:11 ` [PATCH v3 06/14] PCI: hv: Drop msi_controller structure Marc Zyngier
2021-03-30 15:11 ` [PATCH v3 07/14] PCI/MSI: Drop use of msi_controller from core code Marc Zyngier
2021-03-30 15:11 ` [PATCH v3 08/14] PCI/MSI: Kill msi_controller structure Marc Zyngier
2021-03-30 15:11 ` [PATCH v3 09/14] PCI/MSI: Kill default_teardown_msi_irqs() Marc Zyngier
2021-03-30 15:11 ` [PATCH v3 10/14] PCI/MSI: Let PCI host bridges declare their reliance on MSI domains Marc Zyngier
2021-03-30 15:11 ` [PATCH v3 11/14] PCI/MSI: Make pci_host_common_probe() declare its " Marc Zyngier
2021-03-30 15:11 ` [PATCH v3 12/14] PCI: mediatek: Advertise lack of built-in MSI handling Marc Zyngier
2021-03-30 15:11 ` [PATCH v3 13/14] PCI/MSI: Document the various ways of ending up with NO_MSI Marc Zyngier
2021-05-18 4:28 ` Jeremy Linton
2021-05-18 8:59 ` Marc Zyngier
2021-03-30 15:11 ` [PATCH v3 14/14] PCI: Refactor HT advertising of NO_MSI flag Marc Zyngier
2021-04-01 11:27 ` [PATCH v3 00/14] PCI/MSI: Getting rid of msi_controller, and other cleanups Lorenzo Pieralisi
2021-04-01 12:07 ` Marc Zyngier
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