- 16 Mar, 2015 21 commits
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Antonios Motakis authored
With this patch the VFIO user will be able to set an eventfd that can be used in order to mask and unmask IRQs of platform devices. Signed-off-by:
Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by:
Baptiste Reynal <b.reynal@virtualopensystems.com> Reviewed-by:
Eric Auger <eric.auger@linaro.org> Tested-by:
Alex Williamson <alex.williamson@redhat.com>
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Antonios Motakis authored
Now we have finally completely decoupled virqfd from VFIO_PCI. We can initialize it from the VFIO generic code, in order to safely use it from multiple independent VFIO bus drivers. Signed-off-by:
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Antonios Motakis authored
The virqfd functionality that is used by VFIO_PCI to implement interrupt masking and unmasking via an eventfd, is generic enough and can be reused by another driver. Move it to a separate file in order to allow the code to be shared. Signed-off-by:
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Antonios Motakis authored
VFIO_PCI passes the VFIO device structure *vdev via eventfd to the handler that implements masking/unmasking of IRQs via an eventfd. We can replace it in the virqfd infrastructure with an opaque type so we can make use of the mechanism from other VFIO bus drivers. Signed-off-by:
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Antonios Motakis authored
The Virqfd code needs to keep accesses to any struct *virqfd safe, but this comes into play only when creating or destroying eventfds, so sharing the same spinlock with the VFIO bus driver is not necessary. Signed-off-by:
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Antonios Motakis authored
The functions vfio_pci_virqfd_init and vfio_pci_virqfd_exit are not really PCI specific, since we plan to reuse the virqfd code with more VFIO drivers in addition to VFIO_PCI. Signed-off-by:
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Antonios Motakis authored
We want to reuse virqfd functionality in multiple VFIO drivers; before moving these functions to core VFIO, add the vfio_ prefix to the virqfd_enable and virqfd_disable functions, and export them so they can be used from other modules. Signed-off-by:
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Antonios Motakis authored
Level sensitive interrupts are exposed as maskable and automasked interrupts and are masked and disabled automatically when they fire. Signed-off-by:
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Antonios Motakis authored
This patch allows to set an eventfd for a platform device's interrupt, and also to trigger the interrupt eventfd from userspace for testing. Level sensitive interrupts are marked as maskable and are handled in a later patch. Edge triggered interrupts are not advertised as maskable and are implemented here using a simple and efficient IRQ handler. Signed-off-by:
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Antonios Motakis authored
This patch is a skeleton for the VFIO_DEVICE_SET_IRQS IOCTL, around which most IRQ functionality is implemented in VFIO. Signed-off-by:
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Antonios Motakis authored
Return information for the interrupts exposed by the device. This patch extends VFIO_DEVICE_GET_INFO with the number of IRQs and enables VFIO_DEVICE_GET_IRQ_INFO. Signed-off-by:
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Antonios Motakis authored
Allow to memory map the MMIO regions of the device so userspace can directly access them. PIO regions are not being handled at this point. Signed-off-by:
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Antonios Motakis authored
VFIO returns a file descriptor which we can use to manipulate the memory regions of the device. Usually, the user will mmap memory regions that are addressable on page boundaries, however for memory regions where this is not the case we cannot provide mmap functionality due to security concerns. For this reason we also allow to use read and write functions to the file descriptor pointing to the memory regions. We implement this functionality only for MMIO regions of platform devices; PIO regions are not being handled at this point. Signed-off-by:
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Antonios Motakis authored
This patch enables the IOCTLs VFIO_DEVICE_GET_REGION_INFO ioctl call, which allows the user to learn about the available MMIO resources of a device. Signed-off-by:
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Antonios Motakis authored
A VFIO userspace driver will start by opening the VFIO device that corresponds to an IOMMU group, and will use the ioctl interface to get the basic device info, such as number of memory regions and interrupts, and their properties. This patch enables the VFIO_DEVICE_GET_INFO ioctl call. Signed-off-by:
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Antonios Motakis authored
Enable building the VFIO AMBA driver. VFIO_AMBA depends on VFIO_PLATFORM, since it is sharing a portion of the code, and it is essentially implemented as a platform device whose resources are discovered via AMBA specific APIs in the kernel. Signed-off-by:
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Antonios Motakis authored
Add support for discovering AMBA devices with VFIO and handle them similarly to Linux platform devices. Signed-off-by:
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Antonios Motakis authored
Enable building the VFIO PLATFORM driver that allows to use Linux platform devices with VFIO. Signed-off-by:
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Antonios Motakis authored
Driver to bind to Linux platform devices, and callbacks to discover their resources to be used by the main VFIO PLATFORM code. Signed-off-by:
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Antonios Motakis authored
This patch forms the common skeleton code for platform devices support with VFIO. This will include the core functionality of VFIO_PLATFORM, however binding to the device and discovering the device resources will be done with the help of a separate file where any Linux platform bus specific code will reside. This will allow us to implement support for also discovering AMBA devices and their resources, but still reuse a large part of the VFIO_PLATFORM implementation. Signed-off-by:
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Linus Torvalds authored
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- 15 Mar, 2015 6 commits
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm fix from Dave Airlie: "An oops snuck in in an -rc3 patch, this fixes it" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: [PATCH] drm/mm: Fix support 4 GiB and larger ranges
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linuxLinus Torvalds authored
Pull clock framework fixes from Michael Turquette: "The clk fixes for 4.0-rc4 comprise three themes. First are the usual driver fixes for new regressions since v3.19. Second are fixes to the common clock divider type caused by recent changes to how we round clock rates. This affects many clock drivers that use this common code. Finally there are fixes for drivers that improperly compared struct clk pointers (drivers must not deref these pointers). While some of these drivers have done this for a long time, this did not cause a problem until we started generating unique struct clk pointers for every consumer. A new function, clk_is_match was introduced to get these drivers working again and they are fixed up to no longer deref the pointers themselves" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: ASoC: kirkwood: fix struct clk pointer comparing ASoC: fsl_spdif: fix struct clk pointer comparing ARM: imx: fix struct clk pointer comparing clk: introduce clk_is_match clk: don't export static symbol clk: divider: fix calculation of initial best divider when rounding to closest clk: divider: fix selection of divider when rounding to closest clk: divider: fix calculation of maximal parent rate for a given divider clk: divider: return real rate instead of divider value clk: qcom: fix platform_no_drv_owner.cocci warnings clk: qcom: fix platform_no_drv_owner.cocci warnings clk: qcom: Add PLL4 vote clock clk: qcom: lcc-msm8960: Fix PLL rate detection clk: qcom: Fix slimbus n and m val offsets clk: ti: Fix FAPLL parent enable bit handling
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Krzysztof Kolasa authored
bad argument if(tmp)... in check_free_hole fix oops: kernel BUG at drivers/gpu/drm/drm_mm.c:305! [airlied: excellent, this was my task for today]. Signed-off-by:
Krzysztof Kolasa <kkolasa@winsoft.pl> Reviewed-by:
Chris wilson <chris@chris-wilson.co.uk> Signed-off-by:
Dave Airlie <airlied@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds authored
Pull ARM SoC fixes from Arnd Bergmann: "This is a rather unpleasantly large set of bug fixes for arm-soc, Most of them because of cross-tree dependencies for Exynos where we should have figured out the right path to merge things before the merge window, and then the maintainer being unable to sort things out in time during a business trip. The other changes contained here are the usual collection: MAINTAINERS file updates - Gregory Clement is now a co-maintainer for the legacy Marvell EBU platforms - A MAINTAINERS entry for the Freescale Vybrid platform that was added last year - Matt Porter no longer works as a maintainer on Broadcom SoCs Build-time issues - A compile-time error for at91 - Several minor DT fixes on at91, imx, exynos, socfpga, and omap - The new digicolor platform was not correctly enabled at all Configuration issues - Two defconfig fix for regressions using USB on versatile express and on OMAP3 - Enabling all 8 CPUs on Allwinner/SUNxi - Enabling the new STiH410 platform to be usable Bug fixes in platform code - A missing barrier for socfpga - Fixing LPDDR1 self-refresh mode on at91 - Fixing RTC interrupt numbers on Exynos3250 - Fixing a cache-coherency issues in CPU power-down on Exynos5 - Multiple small OMAP power management fixes" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (69 commits) MAINTAINERS: Add myself as co-maintainer to the legacy support of the mvebu SoCs ARM: at91: pm_slowclock: fix the compilation error ARM: at91/dt: fix USB high-speed clock to select UTMI ARM: at91/dt: fix at91 udc compatible strings ARM: at91/dt: declare matrix node as a syscon device ARM: vexpress: update CONFIG_USB_ISP1760 option ARM: digicolor: add the machine directory to Makefile ARM: STi: Add STiH410 SoC support MAINTAINERS: add Freescale Vybrid SoC MAINTAINERS: Remove self as ARM mach-bcm co-maintainer ARM: imx6sl-evk: set swbst_reg as vbus's parent reg ARM: imx6qdl-sabresd: set swbst_reg as vbus's parent reg ARM: at91/dt: at91sam9261: fix clocks and clock-names in udc definition ARM: OMAP2+: Fix wl12xx on dm3730-evm with mainline u-boot ARM: OMAP: enable TWL4030_USB in omap2plus_defconfig ARM: dts: dra7x-evm: avoid possible contention while muxing on CAN lines ARM: dts: dra7x-evm: Don't use dcan1_rx.gpio1_15 in DCAN pinctrl ARM: dts: am43xx: fix SLEWCTRL_FAST pinctrl binding ARM: dts: am33xx: fix SLEWCTRL_FAST pinctrl binding ARM: dts: OMAP5: fix polling intervals for thermal zones ... -
git://git.infradead.org/users/jcooper/linuxLinus Torvalds authored
Pull irqchip fixes from Jason Cooper: "armada-370-xp: - Chained per-cpu interrupts gic{,-v3,v3-its}" - Various fixes for safer operation" * tag 'irqchip-fixes-4.0' of git://git.infradead.org/users/jcooper/linux: irqchip: gicv3-its: Support safe initialization irqchip: gicv3-its: Define macros for GITS_CTLR fields irqchip: gicv3-its: Add limitation to page order irqchip: gicv3-its: Use 64KB page as default granule irqchip: gicv3-its: Zero itt before handling to hardware irqchip: gic-v3: Fix out of bounds access to cpu_logical_map irqchip: gic: Fix unsafe locking reported by lockdep irqchip: gicv3-its: Fix unsafe locking reported by lockdep irqchip: gicv3-its: Iterate over PCI aliases to generate ITS configuration irqchip: gicv3-its: Allocate enough memory for the full range of DeviceID irqchip: gicv3-its: Fix ITS CPU init irqchip: armada-370-xp: Fix chained per-cpu interrupts -
Jason Cooper authored
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- 14 Mar, 2015 10 commits
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Misc i915, vmwgfx and radeon fixes along with a fix for one of those recursive sleep mutex debug cases in the mst code" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/vmwgfx: Fix an issue with the device losing its irq line on module unload drm/vmwgfx: Correctly NULLify dma buffer pointer on failure drm/vmwgfx: Reorder device takedown somewhat drm/vmwgfx: Fix a couple of lock dependency violations drm/radeon: drop setting UPLL to sleep mode drm/radeon: fix wait to actually occur after the signaling callback drm/i915: Prevent TLB error on first execution on SNB drm/i915: Do both mt and gen6 style forcewake reset on ivb probe drm/i915: Make WAIT_IOCTL negative timeouts be indefinite again drm/i915: use in_interrupt() not in_irq() to check context drm/mst: fix recursive sleep warning on qlock drm: Don't assign fbs for universal cursor support to files
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fix from James Bottomley: "This is a simple fix for a domain revalidation crash which has recently turned up in the libsas code (applies to mvsas, isc and aic94xx)" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: libsas: Fix Kernel Crash in smp_execute_task
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git://git.samba.org/jlayton/linuxLinus Torvalds authored
Pull file locking bugfix from Jeff Layton: "Just a small fix for a potential problem in one of the lease tracepoints" * tag 'locks-v4.0-4' of git://git.samba.org/jlayton/linux: locks: fix generic_delete_lease tracepoint to use victim pointer
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git://github.com/awilliam/linux-vfioLinus Torvalds authored
Pull VFIO fix from Alex Williamson: "Add missing break to avoid clobbering ioctl (Alexey Kardashevskiy)" * tag 'vfio-v4.0-rc4' of git://github.com/awilliam/linux-vfio: vfio-pci: Add missing break to enable VFIO_PCI_ERR_IRQ_INDEX
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Catalin Marinas: - add TLB invalidation for page table tear-down which was missed when support for CONFIG_HAVE_RCU_TABLE_FREE was added (assuming page table freeing was always deferred) - use UEFI for system and reset poweroff if available - fix asm label placement in relation to the alignment statement * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: put __boot_cpu_mode label after alignment instead of before efi/arm64: use UEFI for system reset and poweroff arm64: Invalidate the TLB corresponding to intermediate page table levels
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Linus Torvalds authored
Merge tag 'linux-kselftest-4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest fix from Shuah Khan: "selftests/exec: Check if the syscall exists and bail if not" * tag 'linux-kselftest-4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/exec: Check if the syscall exists and bail if not
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Jeff Layton authored
It's possible that "fl" won't point at a valid lock at this point, so use "victim" instead which is either a valid lock or NULL. Signed-off-by:Jeff Layton <jeff.layton@primarydata.com>
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Ard Biesheuvel authored
Another one for the big head.S spring cleaning: the label should be after the .align or it may point to the padding. Signed-off-by:
Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com>
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Ard Biesheuvel authored
If UEFI Runtime Services are available, they are preferred over direct PSCI calls or other methods to reset the system. For the reset case, we need to hook into machine_restart(), as the arm_pm_restart function pointer may be overwritten by modules. Tested-by:
Mark Rutland <mark.rutland@arm.com> Reviewed-by:
Matt Fleming <matt.fleming@intel.com> Signed-off-by:
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Catalin Marinas authored
The ARM architecture allows the caching of intermediate page table levels and page table freeing requires a sequence like: pmd_clear() TLB invalidation pte page freeing With commit 5e5f6dc1 (arm64: mm: enable HAVE_RCU_TABLE_FREE logic), the page table freeing batching was moved from tlb_remove_page() to tlb_remove_table(). The former takes care of TLB invalidation as this is also shared with pte clearing and page cache page freeing. The latter, however, does not invalidate the TLBs for intermediate page table levels as it probably relies on the architecture code to do it if required. When the mm->mm_users < 2, tlb_remove_table() does not do any batching and page table pages are freed before tlb_finish_mmu() which performs the actual TLB invalidation. This patch introduces __tlb_flush_pgtable() for arm64 and calls it from the {pte,pmd,pud}_free_tlb() directly without relying on deferred page table freeing. Fixes: 5e5f6dc1 arm64: mm: enable HAVE_RCU_TABLE_FREE logic Reported-by:
Jon Masters <jcm@redhat.com> Tested-by:
Steve Capper <steve.capper@linaro.org> Signed-off-by:
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- 13 Mar, 2015 3 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management and ACPI fixes from Rafael Wysocki: "Just two fixes, one for an ACPI LPSS driver issue introduced during the 3.17 cycle and one revert of a recent commit that sort of broke the cpupower tool. Specifics: - Fix an ACPI LPSS (Low-Power Subsystem) driver issue causing the 8250_dw driver to confuse an LPSS clock with another one it is supposed to handle due to the lack of identification allowing it to tell those clocks apart (Heikki Krogerus). - Revert a recent commit that was supposed to improve the usability of the cpupower tool, but clearly did the opposite (Josh Boyer)" * tag 'pm+acpi-4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: Revert "cpupower Makefile change to help run the tool without 'make install'" ACPI / LPSS: provide con_id for the clkdev -
Gregory CLEMENT authored
I will also take care of the legacy support(not fully converted to DT) of the mvebu SoCs. Signed-off-by:
Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by:
Andrew Lunn <andrew@lunn.ch> Acked-by:
Jason Cooper <jason@lakedaemon.net> Signed-off-by:
Arnd Bergmann <arnd@arndb.de>
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Rafael J. Wysocki authored
* pm-tools: Revert "cpupower Makefile change to help run the tool without 'make install'"
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