From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Sunil V L <sunilvl@ventanamicro.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will@kernel.org>,
"Paul Walmsley" <paul.walmsley@sifive.com>,
"Palmer Dabbelt" <palmer@dabbelt.com>,
"Albert Ou" <aou@eecs.berkeley.edu>,
"Rafael J . Wysocki" <rafael@kernel.org>,
"Len Brown" <lenb@kernel.org>, "Anup Patel" <anup@brainfault.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Haibo Xu" <haibo1.xu@intel.com>,
"Conor Dooley" <conor.dooley@microchip.com>,
"Andrew Jones" <ajones@ventanamicro.com>,
"Björn Töpel" <bjorn@kernel.org>, "Marc Zyngier" <maz@kernel.org>
Subject: Re: [RFC PATCH v3 00/17] RISC-V: ACPI: Add external interrupt controller support
Date: Tue, 19 Dec 2023 18:50:19 +0100 [thread overview]
Message-ID: <CAJZ5v0j6Veze8xDFKTbVZ5=WAfmLdeJ8NXRnh9kwCZgyaDdgew@mail.gmail.com> (raw)
In-Reply-To: <20231219174526.2235150-1-sunilvl@ventanamicro.com>
On Tue, Dec 19, 2023 at 6:45 PM Sunil V L <sunilvl@ventanamicro.com> wrote:
>
> This series adds support for the below ECR approved by ASWG.
> 1) MADT - https://drive.google.com/file/d/1oMGPyOD58JaPgMl1pKasT-VKsIKia7zR/view?usp=sharing
>
> The series primarily enables irqchip drivers for RISC-V ACPI based
> platforms.
>
> The series can be broadly categorized like below.
>
> 1) PCI ACPI related functions are migrated from arm64 to common file so
> that we don't need to duplicate them for RISC-V.
>
> 2) Introduced support for fw_devlink for ACPI nodes for IRQ dependency.
> This helps to support deferred probe of interrupt controller drivers.
>
> 3) Modified pnp_irq() to try registering the IRQ again if it sees it in
> disabled state. This solution is similar to how
> platform_get_irq_optional() works for regular platform devices.
>
> 4) Added support for re-ordering the probe of interrupt controllers when
> IRQCHIP_ACPI_DECLARE is used.
>
> 5) ACPI support added in RISC-V interrupt controller drivers.
>
> This series is based on Anup's AIA v11 series. Since Anup's AIA v11 is
> not merged yet and first time introducing fw_devlink, deferred probe and
> reordering support for IRQCHIP probe, this series is still kept as RFC.
> Looking forward for the feedback!
>
> Changes since RFC v2:
> 1) Introduced fw_devlink for ACPI nodes for IRQ dependency.
> 2) Dropped patches in drivers which are not required due to
> fw_devlink support.
> 3) Dropped pci_set_msi() patch and added a patch in
> pci_create_root_bus().
> 4) Updated pnp_irq() patch so that none of the actual PNP
> drivers need to change.
>
> Changes since RFC v1:
> 1) Abandoned swnode approach as per Marc's feedback.
> 2) To cope up with AIA series changes which changed irqchip driver
> probe from core_initcall() to platform_driver, added patches
> to support deferred probing.
> 3) Rebased on top of Anup's AIA v11 and added tags.
>
> To test the series,
>
> 1) Qemu should be built using the riscv_acpi_b2_v8 branch at
> https://github.com/vlsunil/qemu.git
>
> 2) EDK2 should be built using the instructions at:
> https://github.com/tianocore/edk2/blob/master/OvmfPkg/RiscVVirt/README.md
>
> 3) Build Linux using this series on top of Anup's AIA v11 series.
>
> Run Qemu:
> qemu-system-riscv64 \
> -M virt,pflash0=pflash0,pflash1=pflash1,aia=aplic-imsic \
> -m 2G -smp 8 \
> -serial mon:stdio \
> -device virtio-gpu-pci -full-screen \
> -device qemu-xhci \
> -device usb-kbd \
> -blockdev node-name=pflash0,driver=file,read-only=on,filename=RISCV_VIRT_CODE.fd \
> -blockdev node-name=pflash1,driver=file,filename=RISCV_VIRT_VARS.fd \
> -netdev user,id=net0 -device virtio-net-pci,netdev=net0 \
> -kernel arch/riscv/boot/Image \
> -initrd rootfs.cpio \
> -append "root=/dev/ram ro console=ttyS0 rootwait earlycon=uart8250,mmio,0x10000000"
>
> To boot with APLIC only, use aia=aplic.
> To boot with PLIC, remove aia= option.
>
> This series is also available in acpi_b2_v3_riscv_aia_v11 branch at
> https://github.com/vlsunil/linux.git
>
> Based-on: 20231023172800.315343-1-apatel@ventanamicro.com
> (https://lore.kernel.org/lkml/20231023172800.315343-1-apatel@ventanamicro.com/)
>
> Sunil V L (17):
> arm64: PCI: Migrate ACPI related functions to pci-acpi.c
> RISC-V: ACPI: Implement PCI related functionality
> PCI: Make pci_create_root_bus() declare its reliance on MSI domains
> ACPI: Add fw_devlink support for ACPI fwnode for IRQ dependency
> ACPI: irq: Add support for deferred probe in acpi_register_gsi()
> pnp.h: Reconfigure IRQ in pnp_irq() to support deferred probe
> ACPI: scan.c: Add weak arch specific function to reorder the IRQCHIP
> probe
> ACPI: RISC-V: Implement arch function to reorder irqchip probe entries
> irqchip: riscv-intc: Add ACPI support for AIA
> irqchip: riscv-imsic: Add ACPI support
> irqchip: riscv-aplic: Add ACPI support
> irqchip: irq-sifive-plic: Add ACPI support
> ACPI: bus: Add RINTC IRQ model for RISC-V
> ACPI: bus: Add acpi_riscv_init function
> ACPI: RISC-V: Create APLIC platform device
> ACPI: RISC-V: Create PLIC platform device
> irqchip: riscv-intc: Set ACPI irqmodel
JFYI, I have no capacity to provide any feedback on this till 6.8-rc1 is out.
Thanks!
next prev parent reply other threads:[~2023-12-19 17:50 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-19 17:45 [RFC PATCH v3 00/17] RISC-V: ACPI: Add external interrupt controller support Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 01/17] arm64: PCI: Migrate ACPI related functions to pci-acpi.c Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 02/17] RISC-V: ACPI: Implement PCI related functionality Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 03/17] PCI: Make pci_create_root_bus() declare its reliance on MSI domains Sunil V L
2023-12-26 23:56 ` Bjorn Helgaas
2023-12-28 13:08 ` Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 04/17] ACPI: Add fw_devlink support for ACPI fwnode for IRQ dependency Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 05/17] ACPI: irq: Add support for deferred probe in acpi_register_gsi() Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 06/17] pnp.h: Reconfigure IRQ in pnp_irq() to support deferred probe Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 07/17] ACPI: scan.c: Add weak arch specific function to reorder the IRQCHIP probe Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 08/17] ACPI: RISC-V: Implement arch function to reorder irqchip probe entries Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 09/17] irqchip: riscv-intc: Add ACPI support for AIA Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 10/17] irqchip: riscv-imsic: Add ACPI support Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 11/17] irqchip: riscv-aplic: " Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 12/17] irqchip: irq-sifive-plic: " Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 13/17] ACPI: bus: Add RINTC IRQ model for RISC-V Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 14/17] ACPI: bus: Add acpi_riscv_init function Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 15/17] ACPI: RISC-V: Create APLIC platform device Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 16/17] ACPI: RISC-V: Create PLIC " Sunil V L
2023-12-19 17:45 ` [RFC PATCH v3 17/17] irqchip: riscv-intc: Set ACPI irqmodel Sunil V L
2023-12-19 17:50 ` Rafael J. Wysocki [this message]
2023-12-20 3:49 ` [RFC PATCH v3 00/17] RISC-V: ACPI: Add external interrupt controller support Sunil V L
2024-01-30 6:02 ` Sunil V L
2024-02-01 18:10 ` Rafael J. Wysocki
2024-02-02 12:17 ` Sunil V L
2024-03-04 10:20 ` Sunil V L
2024-04-15 15:09 ` Sunil V L
2024-04-15 15:18 ` Rafael J. Wysocki
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