On Thu, Apr 18, 2024 at 03:49:22PM +0200, Björn Töpel wrote: > Sunil V L <sunilvl@xxxxxxxxxxxxxxxx> 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! Thanks, Sunil
