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Groups > linux.kernel > #1178788
| From | Marc Zyngier <marc.zyngier@arm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v3 06/15] PCI/MSI: of: Allow msi_domain lookup using the host bridge node |
| Date | 2015-07-07 19:30 +0200 |
| Message-ID | <pJEQX-8vd-27@gated-at.bofh.it> (permalink) |
| References | <pJEHg-8rS-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
A number of platforms do not need to use the msi-parent property, as the host bridge itself provides the MSI controller. Allow this configuration by performing an irq domain lookup based on the host bridge node if it doesn't have a valid msi-parent property. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> --- drivers/pci/of.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 09df465..9d61cef 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -69,9 +69,14 @@ void pci_set_phb_of_msi_domain(struct pci_bus *bus) if (!bus->dev.of_node) return; + /* Start looking for a phandle to an MSI controller. */ np = of_parse_phandle(bus->dev.of_node, "msi-parent", 0); + /* + * If we don't have an msi-parent property, look for a domain + * directly attached to the host bridge. + */ if (!np) - return; + np = bus->dev.of_node; d = irq_find_matching_host(np, DOMAIN_BUS_PCI_MSI); if (!d) d = irq_find_host(np); -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH v3 00/15] Introducing per-device MSI domain Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:20 +0200 [PATCH v3 03/15] device core: Introduce per-device MSI domain pointer Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:20 +0200 [PATCH v3 02/15] PCI: MSI: Register irq domain with specific token Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:20 +0200 [PATCH v3 08/15] platform: of: Assign MSI domain to platform device Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:20 +0200 [PATCH v3 04/15] PCI/MSI: Add hooks to populate the msi_domain field Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:20 +0200 [PATCH v3 01/15] genirq: irqdomain: Allow irq domain aliasing Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:20 +0200 [PATCH v3 14/15] PCI/MSI: pci-xgene-msi: Get rid of struct msi_controller Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:20 +0200 [PATCH v3 09/15] irqchip: gicv3-its: Split PCI/MSI code from the core ITS driver Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:30 +0200 [PATCH v3 11/15] irqchip: GICv2m: Get rid of struct msi_controller Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:30 +0200 [PATCH v3 13/15] irqchip: gicv3-its: Make the PCI/MSI code standalone Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:30 +0200 [PATCH v3 05/15] PCI/MSI: of: Add support for OF-provided msi_domain Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:30 +0200 [PATCH v3 07/15] PCI/MSI: Let pci_msi_get_domain use struct device's msi_domain Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:30 +0200 [PATCH v3 06/15] PCI/MSI: of: Allow msi_domain lookup using the host bridge node Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:30 +0200 [PATCH v3 10/15] irqchip: gicv3-its: Register irq domain with platform MSI token Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:30 +0200 [PATCH v3 12/15] irqchip: gicv3-its: Get rid of struct msi_controller Marc Zyngier <marc.zyngier@arm.com> - 2015-07-07 19:30 +0200
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