[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH for 4.6 00/13] xen/arm: Resync the SMMU driver with the Linux one
Hello, The SMMU drivers has diverged from Linux. Having our own driver doesn't make any benefits and make difficult to backport fixes and/or porting features such as PCI. With this series, the core of the SMMU drivers (i.e copied from Linux) is mostly not modified. If it's the case a comment /* Xen: ... */ has been added to explain why. To make the change obvious the resync of the SMMU code is mode in several step: 1) Revert the current SMMU driver (patch #6) 2) Import as it is the driver from Linux (patch #10) 3) Apply 2 fixes useful to correctly use the SATA with the SMMU on calxeda. I don't know why Linux didn't yet applied (patch #11-12) 4) Changes for Xen (patch #13) I also took the opportunity of the resync to consolidate the iommu ops in a single set. When I added the IOMMU set to handle device tree passthrough ( ops assign_dt_device and reassign_dt_device), I didn't think about merging the ops with the PCI one. In fact Linux is using a single set and have only few lines per driver specific to each set (PCI or device tree). A branch is available with all the changes: git://xenbits.xen.org/people/julieng/xen-unstable.git branch smmu-rework Sincerely yours, Andreas Herrmann (2): xen/iommu: smmu: Check for duplicate stream IDs when registering master devices xen/iommu: smmu: Introduce automatic stream-id-masking Julien Grall (11): xen/arm: gic-v2: Change the device name in DT_DEVICE_START xen/arm: vgic: Drop unecessary include asm/device.h xen: Introduce ACCESS_ONCE macro xen/dt: Extend dt_device_match to possibly store data xen/arm: device: Rename device_type into device_match xen/iommu: arm: Remove temporary the SMMU driver xen: Introduce a generic way to describe device xen/iommu: Consolidate device assignment ops into a single set xen/arm: Describe device supported by a driver with dt_match_node xen/iommu: arm: Import the SMMU driver from Linux xen/iommu: smmu: Add Xen specific code to be able to use the driver xen/arch/arm/device.c | 27 +- xen/arch/arm/domain_build.c | 2 +- xen/arch/arm/gic-v2.c | 15 +- xen/arch/arm/gic-v3.c | 10 +- xen/arch/arm/gic.c | 2 +- xen/arch/arm/platform.c | 2 +- xen/arch/arm/vgic-v2.c | 1 - xen/arch/arm/vgic-v3.c | 1 - xen/common/Makefile | 1 + xen/common/device.c | 21 + xen/common/device_tree.c | 13 +- xen/drivers/char/dt-uart.c | 4 +- xen/drivers/char/exynos4210-uart.c | 10 +- xen/drivers/char/ns16550.c | 14 +- xen/drivers/char/omap-uart.c | 10 +- xen/drivers/char/pl011.c | 10 +- xen/drivers/passthrough/amd/pci_amd_iommu.c | 14 +- xen/drivers/passthrough/arm/iommu.c | 2 +- xen/drivers/passthrough/arm/smmu.c | 4107 +++++++++++++++++---------- xen/drivers/passthrough/device_tree.c | 5 +- xen/drivers/passthrough/pci.c | 22 +- xen/drivers/passthrough/vtd/iommu.c | 19 +- xen/include/asm-arm/device.h | 19 +- xen/include/asm-arm/gic.h | 15 +- xen/include/asm-x86/device.h | 17 + xen/include/xen/compiler.h | 14 + xen/include/xen/device.h | 40 + xen/include/xen/device_tree.h | 19 +- xen/include/xen/iommu.h | 18 +- xen/include/xen/pci.h | 12 + 30 files changed, 2843 insertions(+), 1623 deletions(-) create mode 100644 xen/common/device.c create mode 100644 xen/include/asm-x86/device.h create mode 100644 xen/include/xen/device.h -- 2.1.3 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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