From: Hanjun Guo <hanjun.guo@xxxxxxxxxx> This patch series is v3 of a previous posting, https://lkml.org/lkml/2016/9/14/510 v2 -> v3: - Drop RFC tag - Rebase against v4.9-rc2 and Lorenzo's v6 of ACPI IORT ARM SMMU support [1] - Add 3 cleanup patches (patch 1, 2, 3) - Drop arch_init call patch from last version - Introduce a callback for platform device to set msi domain - Introduce a new API to get paltform device's domain instead of reusing the PCI one in previous version - Add a patch to rework iort_node_get_id() [1]: http://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg1251993.html v2 -> v1: - Fix the bug of if multi Interrupt() resoures in single _PRS, we need to calculate all the irq numbers (I missed it in previous version); - Rebased on Marc's irq/irqchip-4.9 branch and Lorenzo's v5 SMMU patches (also Robin's SMMu patches) - Add patch irqchip: mbigen: promote mbigen init. With platform msi support landed in the kernel, and the introduction of IORT for GICv3 ITS (PCI MSI) [1], the framework for platform msi is ready, this patch set add few patches to enable the ACPI platform msi support. For platform device connecting to ITS on arm platform, we have IORT table with the named componant node to describe the mappings of paltform device and ITS, so we can retrieve the dev id and find its parent irqdomain (ITS) from IORT table (simlar with the ACPI ITS support). With acpi platform msi supported, we add the ACPI support for irqchip mbi-gen, which use this framework to form its stacked irqdomain, below is the mbi-gen's topology in the system: | ---------------| |------------------| | | MSI | | wired interrupt(s) | ITS |<-----------------| MBI-GEN |<----------------------------- IO device(s) | | | |<----------------------------- IO device(s) ------------------ ------------------- So with ACPI platform MSI support, we can build the stacked domain for mbi-gen which represented its mappings with the named componant in IORT, but we still missing the connectings of devices to mbi-gen as in ACPI world devices connect to main interrupt controller in MADT in default. In ACPI 6.1, section 19.6.62, Interrupt Resource Descriptor Macro, Interrupt (ResourceUsage, EdgeLevel, ActiveLevel, Shared, ResourceSourceIndex, ResourceSource, DescriptorName) { InterruptList } => Buffer For the arguement ResourceUsage and DescriptorName, which means: ResourceUsage describes whether the device consumes the specified interrupt ( ResourceConsumer ) or produces it for use by a child device ( ResourceProducer ). If nothing is specified, then ResourceConsumer is assumed. DescriptorName evaluates to a name string which refers to the entire resource descriptor. So it can be used for devices connecting to a specific interrupt prodcucer instead of the main interrupt controller in MADT, we can define: Interrupt(ResourceConsumer,..., "\_SB.IRQP") {12,14,....}, then get the interrupt producer with the full path name "\_SB.IRQP". Thanks Hanjun Hanjun Guo (12): ACPI: ARM64: IORT: minor cleanup for iort_match_node_callback() irqchip: gic-v3-its: keep the head file include in alphabetic order ACPI: ARM64: IORT: add missing comment for iort_dev_find_its_id() irqchip: gicv3-its: platform-msi: refactor its_pmsi_prepare() ACPI: platform-msi: retrieve dev id from IORT irqchip: gicv3-its: platform-msi: refactor its_pmsi_init() to prepare for ACPI irqchip: gicv3-its: platform-msi: scan MADT to create platform msi domain ACPI: ARM64: IORT: rework iort_node_get_id() ACPI: platform: setup MSI domain for ACPI based platform device msi: platform: make platform_msi_create_device_domain() ACPI aware ACPI: irq: introduce interrupt producer irqchip: mbigen: Add ACPI support Kefeng Wang (2): irqchip: mbigen: drop module owner irqchip: mbigen: introduce mbigen_of_create_domain() drivers/acpi/acpi_platform.c | 11 +++ drivers/acpi/arm64/iort.c | 83 ++++++++++++++++++-- drivers/acpi/gsi.c | 10 ++- drivers/acpi/resource.c | 85 ++++++++++++++------ drivers/base/platform-msi.c | 3 +- drivers/base/platform.c | 3 + drivers/irqchip/irq-gic-v3-its-platform-msi.c | 106 +++++++++++++++++++------ drivers/irqchip/irq-gic-v3-its.c | 3 +- drivers/irqchip/irq-mbigen.c | 109 ++++++++++++++++++++++---- include/acpi/acpi_bus.h | 1 + include/linux/acpi_iort.h | 11 +++ include/linux/platform_device.h | 3 + 12 files changed, 346 insertions(+), 82 deletions(-) -- 1.7.12.4 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
