mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-28 07:13:34 +00:00
4f9701057a
Including: - Big cleanup of almost unsused parts of the IOMMU API by Christoph Hellwig. This mostly affects the Freescale PAMU driver. - New IOMMU driver for Unisoc SOCs - ARM SMMU Updates from Will: - SMMUv3: Drop vestigial PREFETCH_ADDR support - SMMUv3: Elide TLB sync logic for empty gather - SMMUv3: Fix "Service Failure Mode" handling - SMMUv2: New Qualcomm compatible string - Removal of the AMD IOMMU performance counter writeable check on AMD. It caused long boot delays on some machines and is only needed to work around an errata on some older (possibly pre-production) chips. If someone is still hit by this hardware issue anyway the performance counters will just return 0. - Support for targeted invalidations in the AMD IOMMU driver. Before that the driver only invalidated a single 4k page or the whole IO/TLB for an address space. This has been extended now and is mostly useful for emulated AMD IOMMUs. - Several fixes for the Shared Virtual Memory support in the Intel VT-d driver - Mediatek drivers can now be built as modules - Re-introduction of the forcedac boot option which got lost when converting the Intel VT-d driver to the common dma-iommu implementation. - Extension of the IOMMU device registration interface and support iommu_ops to be const again when drivers are built as modules. -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEr9jSbILcajRFYWYyK/BELZcBGuMFAmCMEIoACgkQK/BELZcB GuOu9xAAvg6aR0uHlxvRq6cgNnHN9Ltp5+t3qFYtRRrauY0iOPMO62k0QQli5shX CGeczD0e59KAZqI0zNJnQn8hMY5dg7XVkFCC5BrSzuCDCtwJZ0N5Tq3pfUlaV1rw BJf41t79Fd+jp7kn53tu+vRAfYZ3+sLOx/6U3c15pqKRZSkyFWbQllOtD3J5LnLu 1PyPlfiNpMwCajiS7aQbN+fuJ/lKIFeA2MDPOsCBzhbfxiJUqJxZOKAZO3rOjFfK feTibqQ+3Zz6MPXt9st1cvPpy8jCosv81OY6Knqvxf/oB5q+fEdi2uNrKISonb/t Fw331oOIwg2A+HOpwC9MN1AumOIqiHSWWENAMk9SlP+TMIWKQ8kZreyI6IEB23dV +QvP3DVA+CfLwtNY/Zh0IqKh28D+IHlKbpWNU1m+9AUe468mV/MTjfwxr9Yfffhm LZ6C0DgFdmtqv8jPuDGUOgo3RNeN8bLnUSEHG9gHibA+RKujl5BWDjKkwILqMQTt Ysdsu8TiNtFIULomizqCpgqEbQfW8TLFvASXCM1VMQ/PDURxvchZPxFDJonYXy+K z2HGaG3eUE07YrAdRKH69aMVIbmS+sjEhvmi4xZ1Lh7wWcIE2AZVvO8qNb+Ckcp3 4tLPPDksm/iQngnFf6gdgH3qv4rgbzE4+74GXqeANiQCjY9dSJI= =qF2C -----END PGP SIGNATURE----- Merge tag 'iommu-updates-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates from Joerg Roedel: - Big cleanup of almost unsused parts of the IOMMU API by Christoph Hellwig. This mostly affects the Freescale PAMU driver. - New IOMMU driver for Unisoc SOCs - ARM SMMU Updates from Will: - Drop vestigial PREFETCH_ADDR support (SMMUv3) - Elide TLB sync logic for empty gather (SMMUv3) - Fix "Service Failure Mode" handling (SMMUv3) - New Qualcomm compatible string (SMMUv2) - Removal of the AMD IOMMU performance counter writeable check on AMD. It caused long boot delays on some machines and is only needed to work around an errata on some older (possibly pre-production) chips. If someone is still hit by this hardware issue anyway the performance counters will just return 0. - Support for targeted invalidations in the AMD IOMMU driver. Before that the driver only invalidated a single 4k page or the whole IO/TLB for an address space. This has been extended now and is mostly useful for emulated AMD IOMMUs. - Several fixes for the Shared Virtual Memory support in the Intel VT-d driver - Mediatek drivers can now be built as modules - Re-introduction of the forcedac boot option which got lost when converting the Intel VT-d driver to the common dma-iommu implementation. - Extension of the IOMMU device registration interface and support iommu_ops to be const again when drivers are built as modules. * tag 'iommu-updates-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (84 commits) iommu: Streamline registration interface iommu: Statically set module owner iommu/mediatek-v1: Add error handle for mtk_iommu_probe iommu/mediatek-v1: Avoid build fail when build as module iommu/mediatek: Always enable the clk on resume iommu/fsl-pamu: Fix uninitialized variable warning iommu/vt-d: Force to flush iotlb before creating superpage iommu/amd: Put newline after closing bracket in warning iommu/vt-d: Fix an error handling path in 'intel_prepare_irq_remapping()' iommu/vt-d: Fix build error of pasid_enable_wpe() with !X86 iommu/amd: Remove performance counter pre-initialization test Revert "iommu/amd: Fix performance counter initialization" iommu/amd: Remove duplicate check of devid iommu/exynos: Remove unneeded local variable initialization iommu/amd: Page-specific invalidations for more than one page iommu/arm-smmu-v3: Remove the unused fields for PREFETCH_CONFIG command iommu/vt-d: Avoid unnecessary cache flush in pasid entry teardown iommu/vt-d: Invalidate PASID cache when root/context entry changed iommu/vt-d: Remove WO permissions on second-level paging entries iommu/vt-d: Report the right page fault address ...
420 lines
13 KiB
C
420 lines
13 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __CPUHOTPLUG_H
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#define __CPUHOTPLUG_H
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#include <linux/types.h>
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/*
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* CPU-up CPU-down
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*
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* BP AP BP AP
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*
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* OFFLINE OFFLINE
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* | ^
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* v |
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* BRINGUP_CPU->AP_OFFLINE BRINGUP_CPU <- AP_IDLE_DEAD (idle thread/play_dead)
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* | AP_OFFLINE
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* v (IRQ-off) ,---------------^
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* AP_ONLNE | (stop_machine)
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* | TEARDOWN_CPU <- AP_ONLINE_IDLE
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* | ^
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* v |
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* AP_ACTIVE AP_ACTIVE
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*/
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enum cpuhp_state {
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CPUHP_INVALID = -1,
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CPUHP_OFFLINE = 0,
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CPUHP_CREATE_THREADS,
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CPUHP_PERF_PREPARE,
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CPUHP_PERF_X86_PREPARE,
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CPUHP_PERF_X86_AMD_UNCORE_PREP,
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CPUHP_PERF_POWER,
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CPUHP_PERF_SUPERH,
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CPUHP_X86_HPET_DEAD,
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CPUHP_X86_APB_DEAD,
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CPUHP_X86_MCE_DEAD,
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CPUHP_VIRT_NET_DEAD,
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CPUHP_SLUB_DEAD,
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CPUHP_DEBUG_OBJ_DEAD,
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CPUHP_MM_WRITEBACK_DEAD,
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CPUHP_MM_VMSTAT_DEAD,
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CPUHP_SOFTIRQ_DEAD,
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CPUHP_NET_MVNETA_DEAD,
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CPUHP_CPUIDLE_DEAD,
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CPUHP_ARM64_FPSIMD_DEAD,
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CPUHP_ARM_OMAP_WAKE_DEAD,
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CPUHP_IRQ_POLL_DEAD,
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CPUHP_BLOCK_SOFTIRQ_DEAD,
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CPUHP_ACPI_CPUDRV_DEAD,
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CPUHP_S390_PFAULT_DEAD,
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CPUHP_BLK_MQ_DEAD,
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CPUHP_FS_BUFF_DEAD,
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CPUHP_PRINTK_DEAD,
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CPUHP_MM_MEMCQ_DEAD,
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CPUHP_PERCPU_CNT_DEAD,
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CPUHP_RADIX_DEAD,
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CPUHP_PAGE_ALLOC_DEAD,
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CPUHP_NET_DEV_DEAD,
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CPUHP_PCI_XGENE_DEAD,
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CPUHP_IOMMU_IOVA_DEAD,
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CPUHP_LUSTRE_CFS_DEAD,
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CPUHP_AP_ARM_CACHE_B15_RAC_DEAD,
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CPUHP_PADATA_DEAD,
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CPUHP_WORKQUEUE_PREP,
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CPUHP_POWER_NUMA_PREPARE,
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CPUHP_HRTIMERS_PREPARE,
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CPUHP_PROFILE_PREPARE,
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CPUHP_X2APIC_PREPARE,
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CPUHP_SMPCFD_PREPARE,
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CPUHP_RELAY_PREPARE,
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CPUHP_SLAB_PREPARE,
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CPUHP_MD_RAID5_PREPARE,
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CPUHP_RCUTREE_PREP,
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CPUHP_CPUIDLE_COUPLED_PREPARE,
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CPUHP_POWERPC_PMAC_PREPARE,
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CPUHP_POWERPC_MMU_CTX_PREPARE,
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CPUHP_XEN_PREPARE,
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CPUHP_XEN_EVTCHN_PREPARE,
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CPUHP_ARM_SHMOBILE_SCU_PREPARE,
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CPUHP_SH_SH3X_PREPARE,
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CPUHP_NET_FLOW_PREPARE,
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CPUHP_TOPOLOGY_PREPARE,
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CPUHP_NET_IUCV_PREPARE,
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CPUHP_ARM_BL_PREPARE,
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CPUHP_TRACE_RB_PREPARE,
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CPUHP_MM_ZS_PREPARE,
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CPUHP_MM_ZSWP_MEM_PREPARE,
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CPUHP_MM_ZSWP_POOL_PREPARE,
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CPUHP_KVM_PPC_BOOK3S_PREPARE,
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CPUHP_ZCOMP_PREPARE,
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CPUHP_TIMERS_PREPARE,
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CPUHP_MIPS_SOC_PREPARE,
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CPUHP_BP_PREPARE_DYN,
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CPUHP_BP_PREPARE_DYN_END = CPUHP_BP_PREPARE_DYN + 20,
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CPUHP_BRINGUP_CPU,
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CPUHP_AP_IDLE_DEAD,
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CPUHP_AP_OFFLINE,
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CPUHP_AP_SCHED_STARTING,
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CPUHP_AP_RCUTREE_DYING,
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CPUHP_AP_CPU_PM_STARTING,
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CPUHP_AP_IRQ_GIC_STARTING,
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CPUHP_AP_IRQ_HIP04_STARTING,
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CPUHP_AP_IRQ_APPLE_AIC_STARTING,
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CPUHP_AP_IRQ_ARMADA_XP_STARTING,
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CPUHP_AP_IRQ_BCM2836_STARTING,
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CPUHP_AP_IRQ_MIPS_GIC_STARTING,
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CPUHP_AP_IRQ_RISCV_STARTING,
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CPUHP_AP_IRQ_SIFIVE_PLIC_STARTING,
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CPUHP_AP_ARM_MVEBU_COHERENCY,
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CPUHP_AP_MICROCODE_LOADER,
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CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING,
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CPUHP_AP_PERF_X86_STARTING,
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CPUHP_AP_PERF_X86_AMD_IBS_STARTING,
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CPUHP_AP_PERF_X86_CQM_STARTING,
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CPUHP_AP_PERF_X86_CSTATE_STARTING,
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CPUHP_AP_PERF_XTENSA_STARTING,
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CPUHP_AP_MIPS_OP_LOONGSON3_STARTING,
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CPUHP_AP_ARM_SDEI_STARTING,
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CPUHP_AP_ARM_VFP_STARTING,
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CPUHP_AP_ARM64_DEBUG_MONITORS_STARTING,
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CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING,
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CPUHP_AP_PERF_ARM_ACPI_STARTING,
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CPUHP_AP_PERF_ARM_STARTING,
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CPUHP_AP_ARM_L2X0_STARTING,
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CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
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CPUHP_AP_ARM_ARCH_TIMER_STARTING,
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CPUHP_AP_ARM_GLOBAL_TIMER_STARTING,
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CPUHP_AP_JCORE_TIMER_STARTING,
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CPUHP_AP_ARM_TWD_STARTING,
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CPUHP_AP_QCOM_TIMER_STARTING,
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CPUHP_AP_TEGRA_TIMER_STARTING,
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CPUHP_AP_ARMADA_TIMER_STARTING,
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CPUHP_AP_MARCO_TIMER_STARTING,
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CPUHP_AP_MIPS_GIC_TIMER_STARTING,
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CPUHP_AP_ARC_TIMER_STARTING,
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CPUHP_AP_RISCV_TIMER_STARTING,
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CPUHP_AP_CLINT_TIMER_STARTING,
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CPUHP_AP_CSKY_TIMER_STARTING,
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CPUHP_AP_TI_GP_TIMER_STARTING,
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CPUHP_AP_HYPERV_TIMER_STARTING,
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CPUHP_AP_KVM_STARTING,
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CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING,
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CPUHP_AP_KVM_ARM_VGIC_STARTING,
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CPUHP_AP_KVM_ARM_TIMER_STARTING,
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/* Must be the last timer callback */
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CPUHP_AP_DUMMY_TIMER_STARTING,
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CPUHP_AP_ARM_XEN_STARTING,
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CPUHP_AP_ARM_CORESIGHT_STARTING,
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CPUHP_AP_ARM_CORESIGHT_CTI_STARTING,
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CPUHP_AP_ARM64_ISNDEP_STARTING,
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CPUHP_AP_SMPCFD_DYING,
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CPUHP_AP_X86_TBOOT_DYING,
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CPUHP_AP_ARM_CACHE_B15_RAC_DYING,
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CPUHP_AP_ONLINE,
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CPUHP_TEARDOWN_CPU,
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CPUHP_AP_ONLINE_IDLE,
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CPUHP_AP_SCHED_WAIT_EMPTY,
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CPUHP_AP_SMPBOOT_THREADS,
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CPUHP_AP_X86_VDSO_VMA_ONLINE,
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CPUHP_AP_IRQ_AFFINITY_ONLINE,
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CPUHP_AP_BLK_MQ_ONLINE,
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CPUHP_AP_ARM_MVEBU_SYNC_CLOCKS,
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CPUHP_AP_X86_INTEL_EPB_ONLINE,
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CPUHP_AP_PERF_ONLINE,
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CPUHP_AP_PERF_X86_ONLINE,
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CPUHP_AP_PERF_X86_UNCORE_ONLINE,
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CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE,
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CPUHP_AP_PERF_X86_AMD_POWER_ONLINE,
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CPUHP_AP_PERF_X86_RAPL_ONLINE,
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CPUHP_AP_PERF_X86_CQM_ONLINE,
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CPUHP_AP_PERF_X86_CSTATE_ONLINE,
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CPUHP_AP_PERF_S390_CF_ONLINE,
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CPUHP_AP_PERF_S390_CFD_ONLINE,
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CPUHP_AP_PERF_S390_SF_ONLINE,
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CPUHP_AP_PERF_ARM_CCI_ONLINE,
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CPUHP_AP_PERF_ARM_CCN_ONLINE,
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CPUHP_AP_PERF_ARM_HISI_DDRC_ONLINE,
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CPUHP_AP_PERF_ARM_HISI_HHA_ONLINE,
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CPUHP_AP_PERF_ARM_HISI_L3_ONLINE,
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CPUHP_AP_PERF_ARM_HISI_PA_ONLINE,
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CPUHP_AP_PERF_ARM_HISI_SLLC_ONLINE,
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CPUHP_AP_PERF_ARM_L2X0_ONLINE,
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CPUHP_AP_PERF_ARM_QCOM_L2_ONLINE,
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CPUHP_AP_PERF_ARM_QCOM_L3_ONLINE,
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CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE,
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CPUHP_AP_PERF_ARM_CAVIUM_TX2_UNCORE_ONLINE,
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CPUHP_AP_PERF_POWERPC_NEST_IMC_ONLINE,
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CPUHP_AP_PERF_POWERPC_CORE_IMC_ONLINE,
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CPUHP_AP_PERF_POWERPC_THREAD_IMC_ONLINE,
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CPUHP_AP_PERF_POWERPC_TRACE_IMC_ONLINE,
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CPUHP_AP_PERF_POWERPC_HV_24x7_ONLINE,
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CPUHP_AP_PERF_POWERPC_HV_GPCI_ONLINE,
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CPUHP_AP_PERF_CSKY_ONLINE,
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CPUHP_AP_WATCHDOG_ONLINE,
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CPUHP_AP_WORKQUEUE_ONLINE,
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CPUHP_AP_RCUTREE_ONLINE,
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CPUHP_AP_BASE_CACHEINFO_ONLINE,
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CPUHP_AP_ONLINE_DYN,
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CPUHP_AP_ONLINE_DYN_END = CPUHP_AP_ONLINE_DYN + 30,
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CPUHP_AP_X86_HPET_ONLINE,
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CPUHP_AP_X86_KVM_CLK_ONLINE,
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CPUHP_AP_DTPM_CPU_ONLINE,
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CPUHP_AP_ACTIVE,
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CPUHP_ONLINE,
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};
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int __cpuhp_setup_state(enum cpuhp_state state, const char *name, bool invoke,
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int (*startup)(unsigned int cpu),
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int (*teardown)(unsigned int cpu), bool multi_instance);
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int __cpuhp_setup_state_cpuslocked(enum cpuhp_state state, const char *name,
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bool invoke,
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int (*startup)(unsigned int cpu),
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int (*teardown)(unsigned int cpu),
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bool multi_instance);
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/**
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* cpuhp_setup_state - Setup hotplug state callbacks with calling the callbacks
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* @state: The state for which the calls are installed
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* @name: Name of the callback (will be used in debug output)
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* @startup: startup callback function
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* @teardown: teardown callback function
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*
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* Installs the callback functions and invokes the startup callback on
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* the present cpus which have already reached the @state.
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*/
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static inline int cpuhp_setup_state(enum cpuhp_state state,
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const char *name,
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int (*startup)(unsigned int cpu),
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int (*teardown)(unsigned int cpu))
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{
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return __cpuhp_setup_state(state, name, true, startup, teardown, false);
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}
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static inline int cpuhp_setup_state_cpuslocked(enum cpuhp_state state,
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const char *name,
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int (*startup)(unsigned int cpu),
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int (*teardown)(unsigned int cpu))
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{
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return __cpuhp_setup_state_cpuslocked(state, name, true, startup,
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teardown, false);
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}
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/**
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* cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the
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* callbacks
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* @state: The state for which the calls are installed
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* @name: Name of the callback.
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* @startup: startup callback function
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* @teardown: teardown callback function
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*
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* Same as @cpuhp_setup_state except that no calls are executed are invoked
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* during installation of this callback. NOP if SMP=n or HOTPLUG_CPU=n.
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*/
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static inline int cpuhp_setup_state_nocalls(enum cpuhp_state state,
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const char *name,
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int (*startup)(unsigned int cpu),
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int (*teardown)(unsigned int cpu))
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{
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return __cpuhp_setup_state(state, name, false, startup, teardown,
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false);
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}
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static inline int cpuhp_setup_state_nocalls_cpuslocked(enum cpuhp_state state,
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const char *name,
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int (*startup)(unsigned int cpu),
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int (*teardown)(unsigned int cpu))
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{
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return __cpuhp_setup_state_cpuslocked(state, name, false, startup,
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teardown, false);
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}
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/**
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* cpuhp_setup_state_multi - Add callbacks for multi state
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* @state: The state for which the calls are installed
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* @name: Name of the callback.
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* @startup: startup callback function
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* @teardown: teardown callback function
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*
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* Sets the internal multi_instance flag and prepares a state to work as a multi
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* instance callback. No callbacks are invoked at this point. The callbacks are
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* invoked once an instance for this state are registered via
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* @cpuhp_state_add_instance or @cpuhp_state_add_instance_nocalls.
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*/
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static inline int cpuhp_setup_state_multi(enum cpuhp_state state,
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const char *name,
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int (*startup)(unsigned int cpu,
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struct hlist_node *node),
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int (*teardown)(unsigned int cpu,
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struct hlist_node *node))
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{
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return __cpuhp_setup_state(state, name, false,
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(void *) startup,
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(void *) teardown, true);
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}
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int __cpuhp_state_add_instance(enum cpuhp_state state, struct hlist_node *node,
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bool invoke);
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int __cpuhp_state_add_instance_cpuslocked(enum cpuhp_state state,
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struct hlist_node *node, bool invoke);
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/**
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* cpuhp_state_add_instance - Add an instance for a state and invoke startup
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* callback.
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* @state: The state for which the instance is installed
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* @node: The node for this individual state.
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*
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* Installs the instance for the @state and invokes the startup callback on
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* the present cpus which have already reached the @state. The @state must have
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* been earlier marked as multi-instance by @cpuhp_setup_state_multi.
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*/
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static inline int cpuhp_state_add_instance(enum cpuhp_state state,
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struct hlist_node *node)
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{
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return __cpuhp_state_add_instance(state, node, true);
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}
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/**
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* cpuhp_state_add_instance_nocalls - Add an instance for a state without
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* invoking the startup callback.
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* @state: The state for which the instance is installed
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* @node: The node for this individual state.
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*
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* Installs the instance for the @state The @state must have been earlier
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* marked as multi-instance by @cpuhp_setup_state_multi.
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*/
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static inline int cpuhp_state_add_instance_nocalls(enum cpuhp_state state,
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struct hlist_node *node)
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{
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return __cpuhp_state_add_instance(state, node, false);
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}
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static inline int
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cpuhp_state_add_instance_nocalls_cpuslocked(enum cpuhp_state state,
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struct hlist_node *node)
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{
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return __cpuhp_state_add_instance_cpuslocked(state, node, false);
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}
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void __cpuhp_remove_state(enum cpuhp_state state, bool invoke);
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void __cpuhp_remove_state_cpuslocked(enum cpuhp_state state, bool invoke);
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/**
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* cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown
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* @state: The state for which the calls are removed
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*
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* Removes the callback functions and invokes the teardown callback on
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* the present cpus which have already reached the @state.
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*/
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static inline void cpuhp_remove_state(enum cpuhp_state state)
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{
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__cpuhp_remove_state(state, true);
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}
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/**
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* cpuhp_remove_state_nocalls - Remove hotplug state callbacks without invoking
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* teardown
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* @state: The state for which the calls are removed
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*/
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static inline void cpuhp_remove_state_nocalls(enum cpuhp_state state)
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{
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__cpuhp_remove_state(state, false);
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}
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static inline void cpuhp_remove_state_nocalls_cpuslocked(enum cpuhp_state state)
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{
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__cpuhp_remove_state_cpuslocked(state, false);
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}
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/**
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* cpuhp_remove_multi_state - Remove hotplug multi state callback
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* @state: The state for which the calls are removed
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*
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* Removes the callback functions from a multi state. This is the reverse of
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* cpuhp_setup_state_multi(). All instances should have been removed before
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* invoking this function.
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*/
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static inline void cpuhp_remove_multi_state(enum cpuhp_state state)
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{
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__cpuhp_remove_state(state, false);
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}
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int __cpuhp_state_remove_instance(enum cpuhp_state state,
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struct hlist_node *node, bool invoke);
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/**
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* cpuhp_state_remove_instance - Remove hotplug instance from state and invoke
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* the teardown callback
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* @state: The state from which the instance is removed
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* @node: The node for this individual state.
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*
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* Removes the instance and invokes the teardown callback on the present cpus
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* which have already reached the @state.
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*/
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static inline int cpuhp_state_remove_instance(enum cpuhp_state state,
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struct hlist_node *node)
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{
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return __cpuhp_state_remove_instance(state, node, true);
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}
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/**
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* cpuhp_state_remove_instance_nocalls - Remove hotplug instance from state
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* without invoking the reatdown callback
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* @state: The state from which the instance is removed
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* @node: The node for this individual state.
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*
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* Removes the instance without invoking the teardown callback.
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*/
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static inline int cpuhp_state_remove_instance_nocalls(enum cpuhp_state state,
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struct hlist_node *node)
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{
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return __cpuhp_state_remove_instance(state, node, false);
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}
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#ifdef CONFIG_SMP
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void cpuhp_online_idle(enum cpuhp_state state);
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#else
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static inline void cpuhp_online_idle(enum cpuhp_state state) { }
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#endif
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#endif
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