ACPI core patches for ARM64 are now upstreamed in 4.1. The PCI support patches for ARM64 ACPI are also in progress. I am sending out this RFC to introduce ACPI support for GICv2m. This would allow MSI to work when booting ACPI. There are some modifications to the irq_domain and acpi/gsi code. Due to a large number of prerequisite patches, I have put together a branch on GitHub for review and testing: https://github.com/ssuthiku/linux.git acpi-pci-msi-rfc2 This branch has been tested on AMD Seattle Platform. Any feedback and comments are appreciated. Thank you in advance, Suravee Changes in RFC2: - Rebased to V3 of Introducing per-device MSI domain (from Marc Zyngier) - Rebased to V2 of Add seld-probe infrastructure and stacked irqdomain support for APCI based GICv2/3 init (from Hanjun Guo) - Introduce GIC MSI frame handle. Suravee Suthikulpanit (8): irqdomain: Introduce irq_domain_ops.init_alloc_info gic: Introduce gic_init_irq_alloc_info() gicv2m: Convert to use GIC irq_domain_ops.init_alloc_info acpi: gsi: Adding acpi_init_irq_alloc_info() hook arm64: Adding arch-specific acpi_init_irq_alloc_info gic: acpi: Introduce GIC MSI frame handle and helper functions gicv2m: Introducing gicv2m_acpi_init() pci: acpi: Bind GICv2m MSI frame to PCI host bridge arch/arm64/kernel/acpi.c | 13 ++++ drivers/acpi/gsi.c | 36 ++++++++-- drivers/irqchip/irq-gic-acpi.c | 78 +++++++++++++++++++++ drivers/irqchip/irq-gic-v2m.c | 129 ++++++++++++++++++++++++++++------- drivers/irqchip/irq-gic.c | 85 +++++++++++++++++++---- drivers/pci/pci-acpi.c | 35 ++++++++++ drivers/pci/probe.c | 2 + include/linux/irqchip/arm-gic-acpi.h | 3 + include/linux/irqchip/arm-gic.h | 24 +++++++ include/linux/irqdomain.h | 2 + include/linux/pci-acpi.h | 1 + kernel/irq/irqdomain.c | 10 ++- 12 files changed, 372 insertions(+), 46 deletions(-) -- 2.1.0 -- 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
