We plan to restructure x86 interrupt code based on hierarchy irqdomain, that is to build irqdomains for CPU vector, interrupt remapping unit, IOAPIC, MSI and HPET etc and organize those irqdomains in hierarchy mode. Each irqdomain manages corresponding interrupt controller and talks to parent interrupt controller through public irqdomain interfaces. We also support stacked irq_chip based on hierarchy irqdomain. It will make the x86 interrupt architecture much more clear and more easy to maintain with hierarchy irqdomain and stacked irq_chip. This is the second patch set to enable support of hierarchy irqdomain on x86 platforms. It's based on tip/x86/apic branch and IOMMU x86/vt-d branch at: https://git.kernel.org/cgit/linux/kernel/git/joro/iommu.git/ x86/vt-d You may access it at: https://github.com/jiangliu/linux.git irqdomain/p2v6 There will aslo be a third patch set to convert IOAPIC driver to support hierarchy irqdomain and clean up code. We have tested this patchset on Intel 32-bit and 64-bit systems. Joerg has helped to test it on AMD platforms. It also passes Fengguang's 0day tests. Helps are still needed for testings on: 1) AMD HT_IRQ 2) UV platform 3) Intel MID platforms Patch 1-7 introduce vector domain to manage CPU vectors and convert PCI MSI/HPET/DMAT etc to use vector domain. Patch 8-11 introduce new irq_remapping interfaces to support hierarchy irqdomain. Patch 12-14, 19-20, 24-27 convert PCI MSI/HPET/DMAR to use new hierarchy irqdomain framework. Patch 15-18 clean up old irq_remapping interfaces to support PCI MSI and HPET interrupts. Patch 21-22 convert HT_IRQ and UV platform to use new hierarchy irqdomain. Patch 23 normalizes irqchip names on x86 platforms. V5->V6: 1) Common hierarchy irqdomian code has been moved into tip/irq/irqdomain 2) Rebase onto tip/irq/irqdomain and iommu/x86/vt-d 3) Convert PCI MSI/HPET/DMAR to use the new generic MSI framework 4) Fix bugs and conflicts when merging with IOMMU hotplug code 5) More code cleanups V4->V5: 1) Refine PCI MSI interfaces to support hierarchy irqdomain 2) Fix a bug with dealing multiple MSI interrupts 3) Improve commit messages V3->V4: 1) Simplify IRQ remapping interfaces 2) Hide all IRQ remapping logic from MSI/HPET drivers 3) Move most MSI irqdomain code to public drivers/pci/msi.c so it could be resued 4) Improve common PCI MSI code 5) Rebase to tip/x86/apic V2->V3: 1) Fix bugs in handling OF irqdomain 2) Add documentation 3) Rebase to v3.18-rc2 V1->V2 1) Add hierarchy iredomain support of DMAR IRQ and UV IRQ. 2) Fix bugs reported by Joe C. 3) Address all review comments from Thomas 4) Fix a bug found during tests 5) Fix errors and warning found by 0day tests Jiang Liu (27): x86, irq: Save destination CPU ID in irq_cfg x86, irq: Use hierarchy irqdomain to manage CPU interrupt vectors x86, hpet: Use new irqdomain interfaces to allocate/free IRQ x86, MSI: Use new irqdomain interfaces to allocate/free IRQ x86, uv: Use new irqdomain interfaces to allocate/free IRQ x86, htirq: Use new irqdomain interfaces to allocate/free IRQ x86, dmar: Use new irqdomain interfaces to allocate/free IRQ x86: irq_remapping: Introduce new interfaces to support hierarchy irqdomain iommu/vt-d: Change prototypes to prepare for enabling hierarchy irqdomain iommu/vt-d: Enhance Intel IR driver to suppport hierarchy irqdomain iommu/amd: Enhance AMD IR driver to suppport hierarchy irqdomain x86, hpet: Enhance HPET IRQ to support hierarchy irqdomain x86, PCI, MSI: Use hierarchy irqdomain to manage MSI interrupts x86, irq: Directly call native_compose_msi_msg() for DMAR IRQ iommu/vt-d: Clean up unused MSI related code iommu/amd: Clean up unused MSI related code x86: irq_remapping: Clean up unused MSI related code x86, irq: Clean up unused MSI related code and interfaces iommu/vt-d: Refine the interfaces to create IRQ for DMAR unit x86, irq: Use hierarchy irqdomain to manage DMAR interrupts x86, htirq: Use hierarchy irqdomain to manage Hypertransport interrupts x86, uv: Use hierarchy irqdomain to manage UV interrupts x86, irq: Normalize x86 irq_chip name x86, PCI/MSI: Simplify the way to deal with remapped MSI interrupts PCI/MSI: Replace msi_update_msg() with irq_chip_compose_msi_msg() x86, irq: Implement irq_chip.irq_write_msi_msg for MSI/DMAR/HPET irq_chips x86, irq: Simplify MSI/DMAR/HPET implementation by using common code arch/ia64/include/asm/irq_remapping.h | 2 - arch/ia64/kernel/msi_ia64.c | 30 ++- arch/x86/Kconfig | 4 +- arch/x86/include/asm/hpet.h | 16 +- arch/x86/include/asm/hw_irq.h | 91 +++++++ arch/x86/include/asm/irq_remapping.h | 47 ++-- arch/x86/include/asm/msi.h | 7 + arch/x86/include/asm/pci.h | 5 - arch/x86/include/asm/x86_init.h | 4 - arch/x86/kernel/apic/htirq.c | 173 +++++++++---- arch/x86/kernel/apic/io_apic.c | 3 - arch/x86/kernel/apic/msi.c | 420 +++++++++++++++++------------- arch/x86/kernel/apic/vector.c | 165 +++++++++++- arch/x86/kernel/hpet.c | 57 ++--- arch/x86/kernel/x86_init.c | 2 - arch/x86/platform/uv/uv_irq.c | 298 ++++++++-------------- drivers/iommu/amd_iommu.c | 378 ++++++++++++++++++++------- drivers/iommu/amd_iommu_init.c | 4 + drivers/iommu/amd_iommu_proto.h | 9 + drivers/iommu/amd_iommu_types.h | 5 + drivers/iommu/dmar.c | 19 +- drivers/iommu/intel_irq_remapping.c | 453 +++++++++++++++++++++++---------- drivers/iommu/irq_remapping.c | 191 ++++---------- drivers/iommu/irq_remapping.h | 20 +- drivers/pci/htirq.c | 48 +--- include/linux/dmar.h | 3 +- include/linux/htirq.h | 22 +- include/linux/intel-iommu.h | 4 + 28 files changed, 1523 insertions(+), 957 deletions(-) create mode 100644 arch/x86/include/asm/msi.h -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
