| Message ID | 20240415170113.662318-1-sunilvl@ventanamicro.com |
|---|---|
| Headers | show |
| Series | RISC-V: ACPI: Add external interrupt controller support | expand |
Sunil V L <sunilvl@ventanamicro.com> 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.) Björn [1] https://github.com/bjoto/riscv-rootfs-utils/commit/c0c620131f04d0c25df1504af4d0629a420b097e
On Thu, Apr 18, 2024 at 03:49:22PM +0200, Björn Töpel wrote: > Sunil V L <sunilvl@ventanamicro.com> 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
On 18.04.24 15:58, Sunil V L wrote: > Hi Björn, > > This is cool!. I was not aware that u-boot also supports ACPI on > RISC-V. Many thanks! > > Thanks, > Sunil For RISC-V and ARM we have * pass-through for QEMU ACPI tables * pass-through for QEMU SMBIOS tables * generation of SMBIOS tables Generation of ACPI tables in U-Boot has up now only been implemented for x86 but would be feasible for RISC-V boards too. Cf. https://docs.u-boot.org/en/latest/board/emulation/acpi.html Best regards Heinrich
On Mon, Apr 15, 2024 at 7:01 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) 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! I've looked at the patches and I don't see anything deeply concerning in them from the ACPI core code perspective. The changes look reasonably straightforward to me. Thanks! > 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 > > 3) Build Linux using this 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_v4_autodep_v1 branch at > https://github.com/vlsunil/linux.git > > Based-on: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tag/?h=next-20240415 > > Sunil V L (20): > 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: scan.c: Add weak arch specific function to reorder the IRQCHIP > probe > ACPI: RISC-V: Implement arch function to reorder irqchip probe entries > ACPI: bus: Add acpi_riscv_init function > RISC-V: Kconfig: Select deferred GSI probe for ACPI systems > ACPI: scan: Refactor dependency creation > drivers/acpi/scan.c: Update _DEP honor list > RISC-V: ACPI: Initialize GSI mapping structures > ACPI: scan.c: Define weak function to populate dependencies > RISC-V: ACPI: Implement function to add implicit dependencies > ACPI/PNP: Initialize PNP devices skipped due to _DEP > 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 > irqchip: riscv-intc: Set ACPI irqmodel > ACPI: pci_link: Clear the dependencies after probe > > arch/arm64/kernel/pci.c | 191 ------------ > arch/riscv/Kconfig | 3 + > arch/riscv/include/asm/irq.h | 57 ++++ > arch/riscv/kernel/acpi.c | 31 +- > drivers/acpi/Kconfig | 3 + > drivers/acpi/bus.c | 4 + > drivers/acpi/pci_link.c | 3 + > drivers/acpi/riscv/Makefile | 2 +- > drivers/acpi/riscv/init.c | 14 + > drivers/acpi/riscv/init.h | 4 + > drivers/acpi/riscv/irq.c | 323 +++++++++++++++++++++ > drivers/acpi/scan.c | 69 +++-- > drivers/irqchip/irq-riscv-aplic-direct.c | 20 +- > drivers/irqchip/irq-riscv-aplic-main.c | 70 +++-- > drivers/irqchip/irq-riscv-aplic-main.h | 1 + > drivers/irqchip/irq-riscv-aplic-msi.c | 9 +- > drivers/irqchip/irq-riscv-imsic-early.c | 52 +++- > drivers/irqchip/irq-riscv-imsic-platform.c | 32 +- > drivers/irqchip/irq-riscv-imsic-state.c | 115 ++++---- > drivers/irqchip/irq-riscv-imsic-state.h | 2 +- > drivers/irqchip/irq-riscv-intc.c | 102 ++++++- > drivers/irqchip/irq-sifive-plic.c | 89 ++++-- > drivers/pci/pci-acpi.c | 182 ++++++++++++ > drivers/pci/probe.c | 3 + > drivers/pnp/pnpacpi/core.c | 24 +- > drivers/pnp/pnpacpi/rsparser.c | 63 ++-- > include/acpi/acpi_bus.h | 2 + > include/linux/acpi.h | 9 + > include/linux/irqchip/riscv-imsic.h | 10 + > include/linux/pnp.h | 7 + > 30 files changed, 1108 insertions(+), 388 deletions(-) > create mode 100644 drivers/acpi/riscv/init.c > create mode 100644 drivers/acpi/riscv/init.h > create mode 100644 drivers/acpi/riscv/irq.c > > -- > 2.40.1 > >
"Rafael J. Wysocki" <rafael@kernel.org> writes: > On Mon, Apr 15, 2024 at 7:01 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) 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! > > I've looked at the patches and I don't see anything deeply concerning > in them from the ACPI core code perspective. > > The changes look reasonably straightforward to me. Sunil, given Rafael's input, it sounds like it's time for a patch proper. This is really the missing piece to make ACPI usable on RISC-V! Thanks for the nice work! Björn FWIW, Tested-by: Björn Töpel <bjorn@rivosinc.com>
On Wed, Apr 24, 2024 at 07:55:50PM +0200, Björn Töpel wrote: > "Rafael J. Wysocki" <rafael@kernel.org> writes: > > > On Mon, Apr 15, 2024 at 7:01 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) 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! > > > > I've looked at the patches and I don't see anything deeply concerning > > in them from the ACPI core code perspective. > > > > The changes look reasonably straightforward to me. > > Sunil, given Rafael's input, it sounds like it's time for a patch > proper. This is really the missing piece to make ACPI usable on RISC-V! > > Thanks for the nice work! > Björn > > FWIW, > Tested-by: Björn Töpel <bjorn@rivosinc.com> > Sorry for the delayed response. I was AFK last week. Many thanks!!, Rafael. Let me send next version without RFC. Thank you very much Björn for testing it. Thanks, Sunil
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 3) Build Linux using this 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_v4_autodep_v1 branch at https://github.com/vlsunil/linux.git Based-on: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tag/?h=next-20240415 Sunil V L (20): 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: scan.c: Add weak arch specific function to reorder the IRQCHIP probe ACPI: RISC-V: Implement arch function to reorder irqchip probe entries ACPI: bus: Add acpi_riscv_init function RISC-V: Kconfig: Select deferred GSI probe for ACPI systems ACPI: scan: Refactor dependency creation drivers/acpi/scan.c: Update _DEP honor list RISC-V: ACPI: Initialize GSI mapping structures ACPI: scan.c: Define weak function to populate dependencies RISC-V: ACPI: Implement function to add implicit dependencies ACPI/PNP: Initialize PNP devices skipped due to _DEP 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 irqchip: riscv-intc: Set ACPI irqmodel ACPI: pci_link: Clear the dependencies after probe arch/arm64/kernel/pci.c | 191 ------------ arch/riscv/Kconfig | 3 + arch/riscv/include/asm/irq.h | 57 ++++ arch/riscv/kernel/acpi.c | 31 +- drivers/acpi/Kconfig | 3 + drivers/acpi/bus.c | 4 + drivers/acpi/pci_link.c | 3 + drivers/acpi/riscv/Makefile | 2 +- drivers/acpi/riscv/init.c | 14 + drivers/acpi/riscv/init.h | 4 + drivers/acpi/riscv/irq.c | 323 +++++++++++++++++++++ drivers/acpi/scan.c | 69 +++-- drivers/irqchip/irq-riscv-aplic-direct.c | 20 +- drivers/irqchip/irq-riscv-aplic-main.c | 70 +++-- drivers/irqchip/irq-riscv-aplic-main.h | 1 + drivers/irqchip/irq-riscv-aplic-msi.c | 9 +- drivers/irqchip/irq-riscv-imsic-early.c | 52 +++- drivers/irqchip/irq-riscv-imsic-platform.c | 32 +- drivers/irqchip/irq-riscv-imsic-state.c | 115 ++++---- drivers/irqchip/irq-riscv-imsic-state.h | 2 +- drivers/irqchip/irq-riscv-intc.c | 102 ++++++- drivers/irqchip/irq-sifive-plic.c | 89 ++++-- drivers/pci/pci-acpi.c | 182 ++++++++++++ drivers/pci/probe.c | 3 + drivers/pnp/pnpacpi/core.c | 24 +- drivers/pnp/pnpacpi/rsparser.c | 63 ++-- include/acpi/acpi_bus.h | 2 + include/linux/acpi.h | 9 + include/linux/irqchip/riscv-imsic.h | 10 + include/linux/pnp.h | 7 + 30 files changed, 1108 insertions(+), 388 deletions(-) create mode 100644 drivers/acpi/riscv/init.c create mode 100644 drivers/acpi/riscv/init.h create mode 100644 drivers/acpi/riscv/irq.c