[RFCv2 PATCH 0/8] Introducing ACPI support for GICv2m

From: Suravee Suthikulpanit
Date: Mon Jul 13 2015 - 05:14:55 EST


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

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