kernel/linux.git/arch/powerpc/include/asm/device.h, branch v6.19.11

cxl: Remove driver

2025-03-16T11:04:27+00:00

Remove the cxl driver that provides support for the IBM Coherent Accelerator Processor Interface. Revert or clean up associated code in arch/powerpc that is no longer necessary. cxl has received minimal maintenance for several years, and is not supported on the Power10 processor. We aren't aware of any users who are likely to be using recent kernels. Thanks to Mikey Neuling, Ian Munsie, Daniel Axtens, Frederic Barrat, Christophe Lombard, Philippe Bergheaud, Vaibhav Jain and Alastair D'Silva for their work on this driver over the years. Signed-off-by: Andrew Donnellan Acked-by: Frederic Barrat Acked-by: Madhavan Srinivasan Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/20250219070007.177725-2-ajd@linux.ibm.com

powerpc/papr_scm: Add perf interface support

2022-03-10T01:50:50+00:00

Performance monitoring support for papr-scm nvdimm devices via perf interface is added which includes addition of pmu functions like add/del/read/event_init for nvdimm_pmu struture. A new parameter 'priv' in added to the pdev_archdata structure to save nvdimm_pmu device pointer, to handle the unregistering of pmu device. papr_scm_pmu_register function populates the nvdimm_pmu structure with name, capabilities, cpumask along with event handling functions. Finally the populated nvdimm_pmu structure is passed to register the pmu device. Event handling functions internally uses hcall to get events and counter data. Result in power9 machine with 2 nvdimm device: Ex: List all event by perf list command:# perf list nmem nmem0/cache_rh_cnt/ [Kernel PMU event] nmem0/cache_wh_cnt/ [Kernel PMU event] nmem0/cri_res_util/ [Kernel PMU event] nmem0/ctl_res_cnt/ [Kernel PMU event] nmem0/ctl_res_tm/ [Kernel PMU event] nmem0/fast_w_cnt/ [Kernel PMU event] nmem0/host_l_cnt/ [Kernel PMU event] nmem0/host_l_dur/ [Kernel PMU event] nmem0/host_s_cnt/ [Kernel PMU event] nmem0/host_s_dur/ [Kernel PMU event] nmem0/med_r_cnt/ [Kernel PMU event] nmem0/med_r_dur/ [Kernel PMU event] nmem0/med_w_cnt/ [Kernel PMU event] nmem0/med_w_dur/ [Kernel PMU event] nmem0/mem_life/ [Kernel PMU event] nmem0/poweron_secs/ [Kernel PMU event] ... nmem1/mem_life/ [Kernel PMU event] nmem1/poweron_secs/ [Kernel PMU event] Acked-by: Peter Zijlstra (Intel) Tested-by: Nageswara R Sastry Signed-off-by: Kajol Jain [Add numa_map_to_online_node function call to get online node id] Reported-by: Nageswara R Sastry Reviewed-by: Madhavan Srinivasan Link: https://lore.kernel.org/r/20220225143024.47947-4-kjain@linux.ibm.com Signed-off-by: Dan Williams

Merge tag 'iommu-updates-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2020-08-11T21:13:24+00:00

Pull iommu updates from Joerg Roedel: - Remove of the dev->archdata.iommu (or similar) pointers from most architectures. Only Sparc is left, but this is private to Sparc as their drivers don't use the IOMMU-API. - ARM-SMMU updates from Will Deacon: - Support for SMMU-500 implementation in Marvell Armada-AP806 SoC - Support for SMMU-500 implementation in NVIDIA Tegra194 SoC - DT compatible string updates - Remove unused IOMMU_SYS_CACHE_ONLY flag - Move ARM-SMMU drivers into their own subdirectory - Intel VT-d updates from Lu Baolu: - Misc tweaks and fixes for vSVA - Report/response page request events - Cleanups - Move the Kconfig and Makefile bits for the AMD and Intel drivers into their respective subdirectory. - MT6779 IOMMU Support - Support for new chipsets in the Renesas IOMMU driver - Other misc cleanups and fixes (e.g. to improve compile test coverage) * tag 'iommu-updates-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (77 commits) iommu/amd: Move Kconfig and Makefile bits down into amd directory iommu/vt-d: Move Kconfig and Makefile bits down into intel directory iommu/arm-smmu: Move Arm SMMU drivers into their own subdirectory iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu iommu: Add gfp parameter to io_pgtable_ops->map() iommu: Mark __iommu_map_sg() as static iommu/vt-d: Rename intel-pasid.h to pasid.h iommu/vt-d: Add page response ops support iommu/vt-d: Report page request faults for guest SVA iommu/vt-d: Add a helper to get svm and sdev for pasid iommu/vt-d: Refactor device_to_iommu() helper iommu/vt-d: Disable multiple GPASID-dev bind iommu/vt-d: Warn on out-of-range invalidation address iommu/vt-d: Fix devTLB flush for vSVA iommu/vt-d: Handle non-page aligned address iommu/vt-d: Fix PASID devTLB invalidation iommu/vt-d: Remove global page support in devTLB flush iommu/vt-d: Enforce PASID devTLB field mask iommu: Make some functions static iommu/amd: Remove double zero check ...

Merge tag 'powerpc-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2020-08-07T17:33:50+00:00

Pull powerpc updates from Michael Ellerman: - Add support for (optionally) using queued spinlocks & rwlocks. - Support for a new faster system call ABI using the scv instruction on Power9 or later. - Drop support for the PROT_SAO mmap/mprotect flag as it will be unsupported on Power10 and future processors, leaving us with no way to implement the functionality it requests. This risks breaking userspace, though we believe it is unused in practice. - A bug fix for, and then the removal of, our custom stack expansion checking. We now allow stack expansion up to the rlimit, like other architectures. - Remove the remnants of our (previously disabled) topology update code, which tried to react to NUMA layout changes on virtualised systems, but was prone to crashes and other problems. - Add PMU support for Power10 CPUs. - A change to our signal trampoline so that we don't unbalance the link stack (branch return predictor) in the signal delivery path. - Lots of other cleanups, refactorings, smaller features and so on as usual. Thanks to: Abhishek Goel, Alastair D'Silva, Alexander A. Klimov, Alexey Kardashevskiy, Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Balamuruhan S, Bharata B Rao, Bill Wendling, Bin Meng, Cédric Le Goater, Chris Packham, Christophe Leroy, Christoph Hellwig, Daniel Axtens, Dan Williams, David Lamparter, Desnes A. Nunes do Rosario, Erhard F., Finn Thain, Frederic Barrat, Ganesh Goudar, Gautham R. Shenoy, Geoff Levand, Greg Kurz, Gustavo A. R. Silva, Hari Bathini, Harish, Imre Kaloz, Joel Stanley, Joe Perches, John Crispin, Jordan Niethe, Kajol Jain, Kamalesh Babulal, Kees Cook, Laurent Dufour, Leonardo Bras, Li RongQing, Madhavan Srinivasan, Mahesh Salgaonkar, Mark Cave-Ayland, Michal Suchanek, Milton Miller, Mimi Zohar, Murilo Opsfelder Araujo, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nayna Jain, Nicholas Piggin, Oliver O'Halloran, Palmer Dabbelt, Pedro Miraglia Franco de Carvalho, Philippe Bergheaud, Pingfan Liu, Pratik Rajesh Sampat, Qian Cai, Qinglang Miao, Randy Dunlap, Ravi Bangoria, Sachin Sant, Sam Bobroff, Sandipan Das, Santosh Sivaraj, Satheesh Rajendran, Shirisha Ganta, Sourabh Jain, Srikar Dronamraju, Stan Johnson, Stephen Rothwell, Thadeu Lima de Souza Cascardo, Thiago Jung Bauermann, Tom Lane, Vaibhav Jain, Vladis Dronov, Wei Yongjun, Wen Xiong, YueHaibing. * tag 'powerpc-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (337 commits) selftests/powerpc: Fix pkey syscall redefinitions powerpc: Fix circular dependency between percpu.h and mmu.h powerpc/powernv/sriov: Fix use of uninitialised variable selftests/powerpc: Skip vmx/vsx/tar/etc tests on older CPUs powerpc/40x: Fix assembler warning about r0 powerpc/papr_scm: Add support for fetching nvdimm 'fuel-gauge' metric powerpc/papr_scm: Fetch nvdimm performance stats from PHYP cpuidle: pseries: Fixup exit latency for CEDE(0) cpuidle: pseries: Add function to parse extended CEDE records cpuidle: pseries: Set the latency-hint before entering CEDE selftests/powerpc: Fix online CPU selection powerpc/perf: Consolidate perf_callchain_user_[64|32]() powerpc/pseries/hotplug-cpu: Remove double free in error path powerpc/pseries/mobility: Add pr_debug() for device tree changes powerpc/pseries/mobility: Set pr_fmt() powerpc/cacheinfo: Warn if cache object chain becomes unordered powerpc/cacheinfo: Improve diagnostics about malformed cache lists powerpc/cacheinfo: Use name@unit instead of full DT path in debug messages powerpc/cacheinfo: Set pr_fmt() powerpc: fix function annotations to avoid section mismatch warnings with gcc-10 ...

powerpc/powernv/sriov: Move SR-IOV into a separate file

2020-07-26T13:34:22+00:00

pci-ioda.c is getting a bit unwieldly due to the amount of stuff jammed in there. The SR-IOV support can be extracted easily enough and is mostly standalone, so move it into a separate file. This patch also moves the PowerNV SR-IOV specific fields from pci_dn and moves them into a platform specific structure. I'm not sure how they ended up in there in the first place, but leaking platform specifics into common code has proven to be a terrible idea so far so lets stop doing that. Signed-off-by: Oliver O'Halloran Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200722065715.1432738-5-oohall@gmail.com

powerpc: use the generic dma_ops_bypass mode

2020-07-19T07:29:29+00:00

Use the DMA API bypass mechanism for direct window mappings. This uses common code and speed up the direct mapping case by avoiding indirect calls just when not using dma ops at all. It also fixes a problem where the sync_* methods were using the bypass check for DMA allocations, but those are part of the streaming ops. Note that this patch loses the DMA_ATTR_WEAK_ORDERING override, which has never been well defined, as is only used by a few drivers, which IIRC never showed up in the typical Cell blade setups that are affected by the ordering workaround. Fixes: efd176a04bef ("powerpc/pseries/dma: Allow SWIOTLB") Signed-off-by: Christoph Hellwig Tested-by: Alexey Kardashevskiy Reviewed-by: Alexey Kardashevskiy

powerpc/dma: Remove dev->archdata.iommu_domain

2020-06-30T09:59:49+00:00

There are no users left, so remove the pointer and save some memory. Signed-off-by: Joerg Roedel Reviewed-by: Jerry Snitselaar Link: https://lore.kernel.org/r/20200625130836.1916-14-joro@8bytes.org

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428

2019-06-05T15:37:16+00:00

Based on 1 normalized pattern(s): this file is released under the gplv2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 68 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Armijn Hemel Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190114.292346262@linutronix.de Signed-off-by: Greg Kroah-Hartman

powerpc/dma: remove max_direct_dma_addr

2019-02-18T11:41:03+00:00

The max_direct_dma_addr duplicates the bus_dma_mask field in struct device. Use the generic field instead. Signed-off-by: Christoph Hellwig Tested-by: Christian Zigotzky Signed-off-by: Michael Ellerman

powerpc/dma: stop overriding dma_get_required_mask

2019-02-18T11:41:03+00:00

The ppc_md and pci_controller_ops methods are unused now and can be removed. The dma_nommu implementation is generic to the generic one except for using max_pfn instead of calling into the memblock API, and all other dma_map_ops instances implement a method of their own. Signed-off-by: Christoph Hellwig Tested-by: Christian Zigotzky Signed-off-by: Michael Ellerman