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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH v5 00/11] PCI devices passthrough on Arm
Hi Stefano, > On 7 Oct 2021, at 8:54 pm, Stefano Stabellini <sstabellini@xxxxxxxxxx> wrote: > > I committed patches 2-7. > > I made two small adjustments on commit: > - patch #3: bool_t/bool > - patch #7: drop _XEN_DOMCTL_CDF_vpci Thank you very much. I will be on leave from tomorrow. Someone from my team will take care of the rest of the patch and reply to the comments. Regards, Rahul > > Cheers, > > Stefano > > > On Wed, 6 Oct 2021, Rahul Singh wrote: >> Hello All, >> >> The purpose of this patch series is to add PCI passthrough support to Xen on >> Arm. PCI passthrough support on ARM is the collaboration work between EPAM >> and >> ARM. ARM submitted the partial RFC [1][2] last year to get early feedback. We >> tried to fix all the comments and added more features to this patch series. >> >> Working POC with all the features can be found at [3]. Working POC is tested >> on x86 so that there will be no regression on x86. Design presentation can be >> found at [4] >> >> PCI passthrough support is divided into different patches. This patch series >> includes following features: >> >> Preparatory work to implement the PCI passthrough support for the ARM: >> - Refactor MSI code. >> - Fixed compilation error when HAS_PCI enabled for ARM. >> >> Discovering PCI Host Bridge in XEN: >> - PCI init to initialize the PCI driver. >> - PCI host bridge discovery in XEN and map the PCI ECAM configuration space >> to >> the XEN memory. >> - PCI access functions. >> >> Discovering PCI devices: >> - To support the PCI passthrough, XEN should be aware of the PCI >> devices. >> - Hardware domain is in charge of doing the PCI enumeration and will discover >> the PCI devices and then communicate to the XEN via a hypercall to add the >> PCI devices in XEN. >> >> Enable the existing x86 virtual PCI support for ARM: >> - Add VPCI trap handler for each of the PCI device added for config space >> access. >> - Register the trap handler in XEN for each of the host bridge PCI ECAM >> config >> space access. >> >> Emulated PCI device tree node in libxl: >> - Create a virtual PCI device tree node in libxl to enable the guest OS to >> discover the virtual PCI during guest boot. >> >> This patch series does not inlcude the following features. Following features >> will be send for review in the next version of the patch series once initial >> patch series merged. >> >> - VPCI support for DOMU guests (Non-identity mappings guest view of the BARs) >> - Virtual bus topology implementation >> - IOMMU related changes (generic, SMMUv2, SMMUv3) >> - MSI support for DOMU guests. >> - Virual ITS support for DOMU guests >> >> [1] >> https://lists.xenproject.org/archives/html/xen-devel/2020-07/msg01184.html >> [2] >> https://lists.xenproject.org/archives/html/xen-devel/2020-07/threads.html#01184 >> [3] https://gitlab.com/rahsingh/xen-integration/-/tree/arm_pci_v4_integrate >> [4] >> https://static.sched.com/hosted_files/xen2021/e4/PCI_Device_Passthrough_On_Arm.pdf >> >> Oleksandr Andrushchenko (1): >> xen/arm: Add support for Xilinx ZynqMP PCI host controller >> >> Rahul Singh (10): >> xen/arm: xc_domain_ioport_permission(..) not supported on ARM. >> xen/arm: Add PHYSDEVOP_pci_device_(*add/remove) support for ARM >> xen/arm: Add cmdline boot option "pci-passthrough = <boolean>" >> xen/arm: PCI host bridge discovery within XEN on ARM >> xen/arm: Implement pci access functions >> xen/domctl: Introduce XEN_DOMCTL_CDF_vpci flag >> xen/arm: Enable the existing x86 virtual PCI support for ARM. >> xen/arm: Transitional change to build HAS_VPCI on ARM. >> arm/libxl: Emulated PCI device tree node in libxl >> xen/arm: Add linux,pci-domain property for hwdom if not available. >> >> docs/misc/xen-command-line.pandoc | 7 + >> tools/include/libxl.h | 6 + >> tools/libs/ctrl/xc_domain.c | 9 + >> tools/libs/light/libxl_arm.c | 111 +++++++++++ >> tools/libs/light/libxl_types.idl | 1 + >> tools/ocaml/libs/xc/xenctrl.ml | 1 + >> tools/ocaml/libs/xc/xenctrl.mli | 1 + >> xen/arch/arm/Makefile | 1 + >> xen/arch/arm/domain.c | 8 +- >> xen/arch/arm/domain_build.c | 19 ++ >> xen/arch/arm/pci/Makefile | 5 + >> xen/arch/arm/pci/ecam.c | 61 ++++++ >> xen/arch/arm/pci/pci-access.c | 140 ++++++++++++++ >> xen/arch/arm/pci/pci-host-common.c | 287 ++++++++++++++++++++++++++++ >> xen/arch/arm/pci/pci-host-generic.c | 48 +++++ >> xen/arch/arm/pci/pci-host-zynqmp.c | 65 +++++++ >> xen/arch/arm/pci/pci.c | 12 ++ >> xen/arch/arm/physdev.c | 6 +- >> xen/arch/arm/vpci.c | 102 ++++++++++ >> xen/arch/arm/vpci.h | 36 ++++ >> xen/arch/x86/domain.c | 6 + >> xen/arch/x86/physdev.c | 52 +---- >> xen/arch/x86/x86_64/physdev.c | 2 +- >> xen/common/domain.c | 2 +- >> xen/drivers/passthrough/pci.c | 18 ++ >> xen/drivers/pci/Makefile | 1 + >> xen/drivers/pci/physdev.c | 86 +++++++++ >> xen/drivers/vpci/Makefile | 3 +- >> xen/drivers/vpci/header.c | 2 + >> xen/include/asm-arm/domain.h | 7 +- >> xen/include/asm-arm/pci.h | 85 ++++++++ >> xen/include/asm-x86/pci.h | 8 +- >> xen/include/public/arch-arm.h | 21 +- >> xen/include/public/domctl.h | 4 +- >> xen/include/xen/hypercall.h | 4 + >> xen/include/xen/pci.h | 2 + >> 36 files changed, 1168 insertions(+), 61 deletions(-) >> create mode 100644 xen/arch/arm/pci/ecam.c >> create mode 100644 xen/arch/arm/pci/pci-access.c >> create mode 100644 xen/arch/arm/pci/pci-host-common.c >> create mode 100644 xen/arch/arm/pci/pci-host-generic.c >> create mode 100644 xen/arch/arm/pci/pci-host-zynqmp.c >> create mode 100644 xen/arch/arm/vpci.c >> create mode 100644 xen/arch/arm/vpci.h >> create mode 100644 xen/drivers/pci/physdev.c >> >> -- >> 2.25.1 >>
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