From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Feng Kan <fkan@apm.com>, Marc Zyngier <marc.zyngier@arm.com>,
linux-pci@vger.kernel.org, Duc Dang <dhdang@apm.com>,
Liviu Dudau <Liviu.Dudau@arm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Tanmay Inamdar <tinamdar@apm.com>,
Grant Likely <grant.likely@linaro.org>, Loc Ho <lho@apm.com>
Subject: Re: [PATCH v4 1/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe MSI/MSIX termination driver
Date: Tue, 21 Apr 2015 09:16:49 +0200 [thread overview]
Message-ID: <2940382.sQOGMMprLX@wuerfel> (raw)
In-Reply-To: <CAL85gmB_1zTy7wHw2zud5ofmX=dXY1sQ49dLJPysk+Z0N4TiaQ@mail.gmail.com>
On Monday 20 April 2015 11:49:37 Feng Kan wrote:
> >
> > Obviously they appear on the PCI host bridge in order, because that
> > is a how PCI works. My question was about what happens then. On a lot
> > of SoCs, there is something like an AXI bus that uses posted
> > transactions between PCI and RAM, so you have a do a full manual
> > syncronization of ongoing PIC DMAs when the MSI catcher signals the
> > top-level interrupt. Do you have a bus between PCI and RAM that does
> > not require this, or does the MSI catcher have logic to flush all DMAs?
>
> Our hardware has an automatic mechanism to flush the content to DRAM before the
> MSI write is committed.
Ok, excellent!
Arnd
next prev parent reply other threads:[~2015-04-21 7:17 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20150408084448.5f0793b7@why.wild-wind.fr.eu.org>
2015-04-09 17:05 ` [PATCH v3 0/4] PCI: X-Gene: Add APM X-Gene v1 MSI/MSIX termination driver Duc Dang
2015-04-09 17:05 ` [PATCH v3 1/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe " Duc Dang
2015-04-09 20:11 ` Bjorn Helgaas
2015-04-09 21:52 ` Duc Dang
2015-04-09 22:39 ` Bjorn Helgaas
2015-04-09 23:26 ` Duc Dang
2015-04-10 17:20 ` Marc Zyngier
2015-04-10 23:42 ` Duc Dang
2015-04-11 12:06 ` Marc Zyngier
2015-04-14 18:20 ` Duc Dang
2015-04-15 8:16 ` Marc Zyngier
2015-04-17 9:50 ` [PATCH v4 0/4] PCI: X-Gene: Add APM X-Gene v1 " Duc Dang
2015-04-17 9:50 ` [PATCH v4 1/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe " Duc Dang
2015-04-17 14:10 ` Arnd Bergmann
2015-04-19 18:40 ` Duc Dang
2015-04-19 19:55 ` Arnd Bergmann
2015-04-20 18:49 ` Feng Kan
2015-04-21 7:16 ` Arnd Bergmann [this message]
2015-04-17 9:50 ` [PATCH v4 2/4] arm64: dts: Add the device tree entry for the APM X-Gene PCIe MSI node Duc Dang
2015-04-17 9:50 ` [PATCH v4 3/4] documentation: dts: Add the device tree binding for APM X-Gene v1 PCIe MSI device tree node Duc Dang
2015-04-17 9:50 ` [PATCH v4 4/4] PCI: X-Gene: Add the MAINTAINERS entry for APM X-Gene v1 PCIe MSI driver Duc Dang
2015-04-17 10:00 ` [PATCH v3 1/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe MSI/MSIX termination driver Duc Dang
2015-04-17 10:17 ` Marc Zyngier
2015-04-17 12:37 ` Duc Dang
2015-04-17 12:45 ` Marc Zyngier
2015-04-20 18:51 ` Feng Kan
2015-04-21 8:32 ` Marc Zyngier
2015-04-21 4:04 ` [PATCH v5 0/4]PCI: X-Gene: Add APM X-Gene v1 " Duc Dang
2015-04-21 4:04 ` [PATCH v5 1/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe " Duc Dang
2015-04-21 15:08 ` Marc Zyngier
2015-04-22 6:15 ` [PATCH v6 0/4]PCI: X-Gene: Add APM X-Gene v1 " Duc Dang
2015-04-22 6:15 ` [PATCH v6 1/4] documentation: dts: Add the device tree binding for APM X-Gene v1 PCIe MSI device tree node Duc Dang
2015-04-22 6:15 ` [PATCH v6 2/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe MSI/MSIX termination driver Duc Dang
2015-04-22 12:50 ` Marc Zyngier
2015-05-18 9:55 ` [PATCH v7 0/4] PCI: X-Gene: Add APM X-Gene v1 " Duc Dang
2015-05-18 9:55 ` [PATCH v7 1/4] documentation: dts: Add the device tree binding for APM X-Gene v1 PCIe MSI device tree node Duc Dang
2015-05-18 9:55 ` [PATCH v7 2/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe MSI/MSIX termination driver Duc Dang
2015-05-20 9:16 ` Marc Zyngier
2015-05-22 18:41 ` [PATCH v8 0/4] PCI: X-Gene: Add APM X-Gene v1 " Duc Dang
2015-05-22 18:41 ` [PATCH v8 1/4] documentation: dts: Add the device tree binding for APM X-Gene v1 PCIe MSI device tree node Duc Dang
2015-05-22 18:41 ` [PATCH v8 2/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe MSI/MSIX termination driver Duc Dang
2015-05-25 11:52 ` Marc Zyngier
2015-05-27 18:27 ` [PATCH v9 0/4]PCI: X-Gene: Add APM X-Gene v1 " Duc Dang
2015-05-27 18:27 ` [PATCH v9 1/4] documentation: dts: Add the device tree binding for APM X-Gene v1 PCIe MSI device tree node Duc Dang
2015-05-27 18:27 ` [PATCH v9 2/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe MSI/MSIX termination driver Duc Dang
2015-05-28 8:05 ` Marc Zyngier
2015-05-28 17:16 ` Duc Dang
2015-05-29 18:24 ` [PATCH v10 0/4] PCI: X-Gene: Add APM X-Gene v1 " Duc Dang
2015-05-29 18:24 ` [PATCH v10 1/4] documentation: dts: Add the device tree binding for APM X-Gene v1 PCIe MSI device tree node Duc Dang
2015-05-29 18:24 ` [PATCH v10 2/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe MSI/MSIX termination driver Duc Dang
2015-05-29 18:24 ` [PATCH v10 3/4] arm64: dts: Add the device tree entry for the APM X-Gene PCIe MSI node Duc Dang
2015-05-29 18:24 ` [PATCH v10 4/4] PCI: X-Gene: Add the MAINTAINERS entry for APM X-Gene v1 PCIe MSI driver Duc Dang
2015-06-05 21:05 ` [PATCH v10 0/4] PCI: X-Gene: Add APM X-Gene v1 MSI/MSIX termination driver Bjorn Helgaas
2015-06-05 21:11 ` Duc Dang
2015-05-27 18:27 ` [PATCH v9 3/4] arm64: dts: Add the device tree entry for the APM X-Gene PCIe MSI node Duc Dang
2015-05-27 18:27 ` [PATCH v9 4/4] PCI: X-Gene: Add the MAINTAINERS entry for APM X-Gene v1 PCIe MSI driver Duc Dang
2015-05-27 18:31 ` [PATCH v8 2/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe MSI/MSIX termination driver Duc Dang
2015-05-22 18:41 ` [PATCH v8 3/4] arm64: dts: Add the device tree entry for the APM X-Gene PCIe MSI node Duc Dang
2015-05-22 18:41 ` [PATCH v8 4/4] PCI: X-Gene: Add the MAINTAINERS entry for APM X-Gene v1 PCIe MSI driver Duc Dang
2015-05-22 18:43 ` [PATCH v7 2/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe MSI/MSIX termination driver Duc Dang
2015-05-18 9:55 ` [PATCH v7 3/4] arm64: dts: Add the device tree entry for the APM X-Gene PCIe MSI node Duc Dang
2015-05-18 9:55 ` [PATCH v7 4/4] PCI: X-Gene: Add the MAINTAINERS entry for APM X-Gene v1 PCIe MSI driver Duc Dang
2015-05-18 10:12 ` [PATCH v6 2/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe MSI/MSIX termination driver Duc Dang
2015-04-22 6:15 ` [PATCH v6 3/4] arm64: dts: Add the device tree entry for the APM X-Gene PCIe MSI node Duc Dang
2015-04-22 6:15 ` [PATCH v6 4/4] PCI: X-Gene: Add the MAINTAINERS entry for APM X-Gene v1 PCIe MSI driver Duc Dang
2015-04-21 4:04 ` [PATCH v5 2/4] arm64: dts: Add the device tree entry for the APM X-Gene PCIe MSI node Duc Dang
2015-04-21 15:19 ` Marc Zyngier
2015-04-21 18:01 ` Duc Dang
2015-04-21 4:04 ` [PATCH v5 3/4] documentation: dts: Add the device tree binding for APM X-Gene v1 PCIe MSI device tree node Duc Dang
2015-04-21 15:42 ` Mark Rutland
2015-04-21 17:37 ` Duc Dang
2015-04-21 4:04 ` [PATCH v5 4/4] PCI: X-Gene: Add the MAINTAINERS entry for APM X-Gene v1 PCIe MSI driver Duc Dang
2015-04-22 3:02 ` [PATCH v5 0/4]PCI: X-Gene: Add APM X-Gene v1 MSI/MSIX termination driver Jon Masters
2015-04-22 3:02 ` Jon Masters
2015-04-11 0:16 ` [PATCH v3 1/4] PCI: X-Gene: Add the APM X-Gene v1 PCIe " Feng Kan
2015-04-11 12:18 ` Marc Zyngier
2015-04-11 14:50 ` Arnd Bergmann
2015-04-10 18:13 ` Paul Bolle
2015-04-10 23:55 ` Duc Dang
2015-04-09 17:05 ` [PATCH v3 2/4] arm64: dts: Add the device tree entry for the APM X-Gene PCIe MSI node Duc Dang
2015-04-09 17:05 ` [PATCH v3 3/4] documentation: dts: Add the device tree binding for APM X-Gene v1 PCIe MSI device tree node Duc Dang
2015-04-09 17:05 ` [PATCH v3 4/4] PCI: X-Gene: Add the MAINTAINERS entry for APM X-Gene v1 PCIe MSI driver Duc Dang
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