This patch set introduce self-probe infrastructure to init IRQ
controllers and stacked irqdomain support for ACPI based GICv2/3
init.
The self-probe infrastructure for ACPI GIC init is similar as
IRQCHIP_DECLARE() and based on the GIC version support in ACPI
MADT table.
We introduce acpi_irq_domain for GICv2/3 core domain to support
stacked irqdomain, and pass the gsi (global system interrupt) as
the agument (void *arg) for gic_irq_domain_alloc(), then we can
alloc virqs via acpi_register_gsi() with stacked irqdomain.
I already compiled this patch set ok with both ACPI=on/off on
ARM64 and also compiled ok on x86, tested with GICv2 init on
FVP model and it boot successfully.
Next step I would consolidate all the ACPI GIC init into one
file -- drivers/irqchip/irq-gic-acpi.c, and introduce ITS and
IORT support.
please comment on this patchset to see if we are on the right
direction.
Hanjun Guo (6):
irqchip / gic: Add GIC version support in ACPI MADT
irqchip: gic: ACPI: Use IRQCHIP_ACPI_DECLARE to simplify GICv2 init
code
irqchip / gic: Add stacked irqdomain support for ACPI based GICv2 init
ACPI / gsi: Add gsi_mutex to synchronize
acpi_register_gsi()/acpi_unregister_gsi()
irqchip / GICv3: Add ACPI support for GICv3+ initialization
irqchip / GICv3: Add stacked irqdomain support for ACPI based init
Tomasz Nowicki (3):
ACPICA: Introduce GIC version for arm based system
ACPI / irqchip: Add self-probe infrastructure to initialize IRQ
controller
irqchip / GICv3: Refactor gic_of_init() for GICv3 driver
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/irq.h | 13 --
arch/arm64/kernel/acpi.c | 25 ----
drivers/acpi/Makefile | 1 +
drivers/acpi/gsi.c | 39 ++---
drivers/acpi/irq.c | 40 ++++++
drivers/irqchip/Kconfig | 3 +
drivers/irqchip/Makefile | 1 +
drivers/irqchip/irq-gic-acpi.c | 116 +++++++++++++++
drivers/irqchip/irq-gic-v3.c | 267 ++++++++++++++++++++++++++++-------
drivers/irqchip/irq-gic.c | 38 ++---
drivers/irqchip/irqchip.h | 12 ++
include/acpi/actbl1.h | 17 ++-
include/asm-generic/vmlinux.lds.h | 13 ++
include/linux/acpi.h | 14 ++
include/linux/acpi_irq.h | 4 +-
include/linux/irqchip/arm-gic-acpi.h | 12 +-
include/linux/mod_devicetable.h | 7 +
18 files changed, 489 insertions(+), 134 deletions(-)
create mode 100644 drivers/acpi/irq.c
create mode 100644 drivers/irqchip/irq-gic-acpi.c
--
1.9.1
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