From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hanjun Guo Subject: Re: [PATCH V1 10/10] acpi, gicv3, its: Use MADT ITS subtable to do PCI/MSI domain initialization. Date: Sat, 24 Oct 2015 18:20:30 +0800 Message-ID: <562B5B6E.2000305@huawei.com> References: <1444917919-21152-1-git-send-email-tn@semihalf.com> <1444917919-21152-11-git-send-email-tn@semihalf.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1444917919-21152-11-git-send-email-tn@semihalf.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Tomasz Nowicki , marc.zyngier@arm.com, tglx@linutronix.de, jason@lakedaemon.net, rjw@rjwysocki.net, lorenzo.pieralisi@arm.com, robert.richter@caviumnetworks.com Cc: Suravee.Suthikulpanit@amd.com, graeme.gregory@linaro.org, Catalin.Marinas@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, hanjun.guo@linaro.org, ddaney.cavm@gmail.com, linux-arm-kernel@lists.infradead.org List-Id: linux-acpi@vger.kernel.org On 2015/10/15 22:05, Tomasz Nowicki wrote: > After refactoring DT code, we let ACPI to build ITS PCI MSI domain > and do requester ID to device ID translation using IORT table. > > We have now full PCI MSI domain stack, thus we can enable ITS initialization > from GICv3 core driver for ACPI scenario. > > Signed-off-by: Tomasz Nowicki > --- > drivers/irqchip/irq-gic-v3-its-pci-msi.c | 48 ++++++++++++++++++++++++++++++-- > drivers/irqchip/irq-gic-v3.c | 3 +- > 2 files changed, 47 insertions(+), 4 deletions(-) > > diff --git a/drivers/irqchip/irq-gic-v3-its-pci-msi.c b/drivers/irqchip/irq-gic-v3-its-pci-msi.c > index cfd35da..09ae2d8 100644 > --- a/drivers/irqchip/irq-gic-v3-its-pci-msi.c > +++ b/drivers/irqchip/irq-gic-v3-its-pci-msi.c > @@ -15,6 +15,8 @@ > * along with this program. If not, see . > */ > > +#include > +#include > #include > #include > #include > @@ -59,8 +61,10 @@ static int its_pci_msi_vec_count(struct pci_dev *pdev) > static int its_get_pci_alias(struct pci_dev *pdev, u16 alias, void *data) > { > struct its_pci_alias *dev_alias = data; > + u32 dev_id; > > - dev_alias->dev_id = alias; > + dev_alias->dev_id = iort_find_pci_id(pdev, alias, &dev_id) == 0 ? > + dev_id : alias; Hi tomasz, I think we need to re work this patch on top of tip/irq/core which has support for "msi-map" and "mai-parent" property support. Thanks Hanjun