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Wysocki" , Len Brown , Bjorn Helgaas , Anup Patel , Thomas Gleixner , Samuel Holland , Robert Moore , Haibo1 Xu , Conor Dooley , Andrew Jones , Atish Kumar Patra , Andrei Warkentin , Marc Zyngier , Heinrich Schuchardt Subject: Re: [RFC PATCH v4 00/20] RISC-V: ACPI: Add external interrupt controller support Message-ID: References: <20240415170113.662318-1-sunilvl@ventanamicro.com> <87a5lqsrvh.fsf@all.your.base.are.belong.to.us> Precedence: bulk X-Mailing-List: acpica-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <87a5lqsrvh.fsf@all.your.base.are.belong.to.us> On Thu, Apr 18, 2024 at 03:49:22PM +0200, Björn Töpel wrote: > Sunil V L writes: > > > 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) Added support for re-ordering the probe of interrupt controllers when > > IRQCHIP_ACPI_DECLARE is used. > > > > 3) To ensure probe order between interrupt controllers and devices, > > implicit dependency is created similar to when _DEP is present. > > > > 4) When PNP devices like Generic 16550A UART, have the dependency on the > > interrupt controller, they will not be added to PNP data structures. So, > > added second phase of pnpacpi_init to handle this. > > > > 5) ACPI support added in RISC-V interrupt controller drivers. > > > > This series is still kept as RFC to seek feedback on above design > > changes. Looking forward for the feedback! > > > > Changes since RFC v3: > > 1) Moved to _DEP method instead of fw_devlink. > > 2) PLIC/APLIC driver probe using namespace devices. > > 3) Handling PNP devices as part of clearing dependency. > > 4) Rebased to latest linux-next to get AIA DT drivers. > > > > 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_namespace_v1 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 > > Hi Sunil, > > I started playing with your work, and FYI: Using U-boot instead of EDK2 > works out of the box (with acpi.config added to U-boot). > > I changed my rootfs/boot tooling like [1], and it boots. > > (For those who prefer working with U-boot UEFI instead of EDK2.) > > Hi Björn, This is cool!. I was not aware that u-boot also supports ACPI on RISC-V. Many thanks! 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smtp.gmail.com with ESMTPSA id km3-20020a056a003c4300b006eaa21301a7sm1488660pfb.162.2024.04.18.06.58.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 Apr 2024 06:59:04 -0700 (PDT) Date: Thu, 18 Apr 2024 19:28:54 +0530 From: Sunil V L To: =?utf-8?B?QmrDtnJuIFTDtnBlbA==?= 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, acpica-devel@lists.linux.dev, Catalin Marinas , Will Deacon , Paul Walmsley , Palmer Dabbelt , Albert Ou , "Rafael J . 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