This patch set introduce self-probe infrastructure to init IRQ
controllers and stacked irqdomain support for ACPI based GICv2/3
init.
This patch set add its support for GIC verion which is introduced
in ACPI 6.0, based on that, we introduce the self-probe infrastructure,
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 match the GIC version and GIC driver and load
it.
After the self-probe infrastructure is ready, I cleanuped the GICv2
code to use the framework.
Patch 4 implement the stacked irqdomain support for GICv2 based on
the model of mapping interrupt and device in ACPI.
Patch 5~8 are ACPI based GICv3 init.
Any comments are warmly welcomed.
v2->v3:
- Introduced a mechanism to match the GSI with its irqdomain instead of
referring to the acpi_irq_domain in previous version
- Add finding GICR base address in GICC structures in GICv3 code.
- Address the comments from Lorenzo and Marc
- Rebased on top of 4.2-rc1, since ACPICA patches were pushed to
4.2 by Rafael, I removed ACPICA patches in previous version.
v1->v2:
- Remove the gicv2/v3 related driver code in drivers/irqchip/irq-gic-acpi.c
which I was trying to consolidate them in one file, then arm-gic.h and
arm-gic-v3.h will be used separately within parent driver only
- Drop the gsi_mutex patch
- Use the GIC version to match the GIC driver, then no need to test
for the version in each driver
- Move acpi_irq_init() to drivers/irqchip/irq-gic-acpi.c instead of
in drivers/acpi/irq.c. maybe we need to rename acpi_irq_init() as
acpi_gic_init() but I keep that name to accommodate of_irq_init(),
any objections please let me know.
update from RFC version:
- Consolidate all the GIC init code into drivers/irqchip/irq-gic-acpi.c
Hanjun Guo (6):
irqchip / GIC: Add GIC version support in ACPI MADT
ACPI / irqchip: Add self-probe infrastructure to initialize IRQ
controller
irqchip / GIC / ACPI: Use IRQCHIP_ACPI_DECLARE to simplify GICv2 init
code
irqchip / gic: Add stacked irqdomain support for ACPI based GICv2 init
irqchip / GICv3: Add stacked irqdomain support for ACPI based init
irqchip / gicv3 / ACPI: Add GICR support via GICC structures
Tomasz Nowicki (2):
irqchip / GICv3: Refactor gic_of_init() for GICv3 driver
irqchip / GICv3: Add ACPI support for GICv3+ initialization
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/acpi.h | 1 -
arch/arm64/include/asm/irq.h | 13 --
arch/arm64/kernel/acpi.c | 25 --
drivers/acpi/gsi.c | 78 +++++--
drivers/irqchip/Kconfig | 3 +
drivers/irqchip/Makefile | 1 +
drivers/irqchip/irq-gic-acpi.c | 171 ++++++++++++++
drivers/irqchip/irq-gic-v3.c | 427 ++++++++++++++++++++++++++++++-----
drivers/irqchip/irq-gic.c | 40 ++--
include/asm-generic/vmlinux.lds.h | 13 ++
include/linux/acpi.h | 21 ++
include/linux/acpi_irq.h | 4 +-
include/linux/irqchip.h | 13 ++
include/linux/irqchip/arm-gic-acpi.h | 10 +-
include/linux/mod_devicetable.h | 8 +
16 files changed, 695 insertions(+), 134 deletions(-)
create mode 100644 drivers/irqchip/irq-gic-acpi.c
--
1.9.1
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