| Message ID | 20170614163713.14574-1-lorenzo.pieralisi@arm.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
On 2017/6/15 0:37, Lorenzo Pieralisi wrote: > ACPI IORT is an ACPI addendum to describe the connection topology of > devices with IOMMUs and interrupt controllers on ARM64 ACPI systems. > > Currently the ACPI IORT Kbuild symbol is selected whenever the Kbuild > symbol ARM_GIC_V3_ITS is enabled, which in turn is selected by ARM64 > Kbuild defaults. This makes the logic behind ACPI_IORT selection a bit > twisted and not easy to follow. On ARM64 systems enabling ACPI the > kbuild symbol ACPI_IORT should always be selected in that it is a kernel > layer provided to the ARM64 arch code to parse and enable ACPI firmware > bindings. > > Make the ACPI_IORT selection explicit in ARM64 Kbuild and remove the > selection from ARM_GIC_V3_ITS entry, making the ACPI_IORT selection > logic clearer to follow. > > Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> > Cc: Will Deacon <will.deacon@arm.com> > Cc: Hanjun Guo <hanjun.guo@linaro.org> > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Marc Zyngier <marc.zyngier@arm.com> > --- > arch/arm64/Kconfig | 1 + > drivers/irqchip/Kconfig | 1 - > 2 files changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index b2024db..2424fb4 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -3,6 +3,7 @@ config ARM64 > select ACPI_CCA_REQUIRED if ACPI > select ACPI_GENERIC_GSI if ACPI > select ACPI_GTDT if ACPI > + select ACPI_IORT if ACPI > select ACPI_REDUCED_HARDWARE_ONLY if ACPI > select ACPI_MCFG if ACPI > select ACPI_SPCR_TABLE if ACPI > diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig > index 478f8ac..4a57b8f 100644 > --- a/drivers/irqchip/Kconfig > +++ b/drivers/irqchip/Kconfig > @@ -39,7 +39,6 @@ config ARM_GIC_V3_ITS > bool > depends on PCI > depends on PCI_MSI > - select ACPI_IORT if ACPI Make sense to me, IORT also describe SMMU+IO topology. I give this patch a light test with CONFIG combination compile test, and see no issues, Acked-by: Hanjun Guo <hanjun.guo@linaro.org> Thanks Hanjun > > config ARM_NVIC > bool > -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 14/06/17 17:37, Lorenzo Pieralisi wrote: > ACPI IORT is an ACPI addendum to describe the connection topology of > devices with IOMMUs and interrupt controllers on ARM64 ACPI systems. > > Currently the ACPI IORT Kbuild symbol is selected whenever the Kbuild > symbol ARM_GIC_V3_ITS is enabled, which in turn is selected by ARM64 > Kbuild defaults. This makes the logic behind ACPI_IORT selection a bit > twisted and not easy to follow. On ARM64 systems enabling ACPI the > kbuild symbol ACPI_IORT should always be selected in that it is a kernel > layer provided to the ARM64 arch code to parse and enable ACPI firmware > bindings. > > Make the ACPI_IORT selection explicit in ARM64 Kbuild and remove the > selection from ARM_GIC_V3_ITS entry, making the ACPI_IORT selection > logic clearer to follow. > > Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> > Cc: Will Deacon <will.deacon@arm.com> > Cc: Hanjun Guo <hanjun.guo@linaro.org> > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> M.
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index b2024db..2424fb4 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -3,6 +3,7 @@ config ARM64 select ACPI_CCA_REQUIRED if ACPI select ACPI_GENERIC_GSI if ACPI select ACPI_GTDT if ACPI + select ACPI_IORT if ACPI select ACPI_REDUCED_HARDWARE_ONLY if ACPI select ACPI_MCFG if ACPI select ACPI_SPCR_TABLE if ACPI diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index 478f8ac..4a57b8f 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -39,7 +39,6 @@ config ARM_GIC_V3_ITS bool depends on PCI depends on PCI_MSI - select ACPI_IORT if ACPI config ARM_NVIC bool
ACPI IORT is an ACPI addendum to describe the connection topology of devices with IOMMUs and interrupt controllers on ARM64 ACPI systems. Currently the ACPI IORT Kbuild symbol is selected whenever the Kbuild symbol ARM_GIC_V3_ITS is enabled, which in turn is selected by ARM64 Kbuild defaults. This makes the logic behind ACPI_IORT selection a bit twisted and not easy to follow. On ARM64 systems enabling ACPI the kbuild symbol ACPI_IORT should always be selected in that it is a kernel layer provided to the ARM64 arch code to parse and enable ACPI firmware bindings. Make the ACPI_IORT selection explicit in ARM64 Kbuild and remove the selection from ARM_GIC_V3_ITS entry, making the ACPI_IORT selection logic clearer to follow. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Hanjun Guo <hanjun.guo@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Marc Zyngier <marc.zyngier@arm.com> --- arch/arm64/Kconfig | 1 + drivers/irqchip/Kconfig | 1 - 2 files changed, 1 insertion(+), 1 deletion(-)