Commit Graph

6878 Commits

Author SHA1 Message Date
Linus Torvalds 67a7a8fff8 xen: fixes for 4.17-rc1
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Merge tag 'for-linus-4.17-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "A few fixes of Xen related core code and drivers"

* tag 'for-linus-4.17-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/pvh: Indicate XENFEAT_linux_rsdp_unrestricted to Xen
  xen/acpi: off by one in read_acpi_id()
  xen/acpi: upload _PSD info for non Dom0 CPUs too
  x86/xen: Delay get_cpu_cap until stack canary is established
  xen: xenbus_dev_frontend: Verify body of XS_TRANSACTION_END
  xen: xenbus: Catch closing of non existent transactions
  xen: xenbus_dev_frontend: Fix XS_TRANSACTION_END handling
2018-04-12 11:04:35 -07:00
Linus Torvalds e5c372280b IOMMU Updates for Linux v4.17
These updates come with:
 
 	- OF_IOMMU support for the Rockchip iommu driver so that it can
 	  use generic DT bindings
 
 	- Rework of locking in the AMD IOMMU interrupt remapping code to
 	  make it work better in RT kernels
 
 	- Support for improved iotlb flushing in the AMD IOMMU driver
 
 	- Support for 52-bit physical and virtual addressing in the
 	  ARM-SMMU
 
 	- Various other small fixes and cleanups
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Merge tag 'iommu-updates-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU updates from Joerg Roedel:

 - OF_IOMMU support for the Rockchip iommu driver so that it can use
   generic DT bindings

 - rework of locking in the AMD IOMMU interrupt remapping code to make
   it work better in RT kernels

 - support for improved iotlb flushing in the AMD IOMMU driver

 - support for 52-bit physical and virtual addressing in the ARM-SMMU

 - various other small fixes and cleanups

* tag 'iommu-updates-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (53 commits)
  iommu/io-pgtable-arm: Avoid warning with 32-bit phys_addr_t
  iommu/rockchip: Support sharing IOMMU between masters
  iommu/rockchip: Add runtime PM support
  iommu/rockchip: Fix error handling in init
  iommu/rockchip: Use OF_IOMMU to attach devices automatically
  iommu/rockchip: Use IOMMU device for dma mapping operations
  dt-bindings: iommu/rockchip: Add clock property
  iommu/rockchip: Control clocks needed to access the IOMMU
  iommu/rockchip: Fix TLB flush of secondary IOMMUs
  iommu/rockchip: Use iopoll helpers to wait for hardware
  iommu/rockchip: Fix error handling in attach
  iommu/rockchip: Request irqs in rk_iommu_probe()
  iommu/rockchip: Fix error handling in probe
  iommu/rockchip: Prohibit unbind and remove
  iommu/amd: Return proper error code in irq_remapping_alloc()
  iommu/amd: Make amd_iommu_devtable_lock a spin_lock
  iommu/amd: Drop the lock while allocating new irq remap table
  iommu/amd: Factor out setting the remap table for a devid
  iommu/amd: Use `table' instead `irt' as variable name in amd_iommu_update_ga()
  iommu/amd: Remove the special case from alloc_irq_table()
  ...
2018-04-11 18:50:41 -07:00
Linus Torvalds 9f3a0941fb libnvdimm for 4.17
* A rework of the filesytem-dax implementation provides for detection of
   unmap operations (truncate / hole punch) colliding with in-progress
   device-DMA. A fix for these collisions remains a work-in-progress
   pending resolution of truncate latency and starvation regressions.
 
 * The of_pmem driver expands the users of libnvdimm outside of x86 and
   ACPI to describe an implementation of persistent memory on PowerPC with
   Open Firmware / Device tree.
 
 * Address Range Scrub (ARS) handling is completely rewritten to account for
   the fact that ARS may run for 100s of seconds and there is no platform
   defined way to cancel it. ARS will now no longer block namespace
   initialization.
 
 * The NVDIMM Namespace Label implementation is updated to handle label
   areas as small as 1K, down from 128K.
 
 * Miscellaneous cleanups and updates to unit test infrastructure.
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Merge tag 'libnvdimm-for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "This cycle was was not something I ever want to repeat as there were
  several late changes that have only now just settled.

  Half of the branch up to commit d2c997c0f1 ("fs, dax: use
  page->mapping to warn...") have been in -next for several releases.
  The of_pmem driver and the address range scrub rework were late
  arrivals, and the dax work was scaled back at the last moment.

  The of_pmem driver missed a previous merge window due to an oversight.
  A sense of obligation to rectify that miss is why it is included for
  4.17. It has acks from PowerPC folks. Stephen reported a build failure
  that only occurs when merging it with your latest tree, for now I have
  fixed that up by disabling modular builds of of_pmem. A test merge
  with your tree has received a build success report from the 0day robot
  over 156 configs.

  An initial version of the ARS rework was submitted before the merge
  window. It is self contained to libnvdimm, a net code reduction, and
  passing all unit tests.

  The filesystem-dax changes are based on the wait_var_event()
  functionality from tip/sched/core. However, late review feedback
  showed that those changes regressed truncate performance to a large
  degree. The branch was rewound to drop the truncate behavior change
  and now only includes preparation patches and cleanups (with full acks
  and reviews). The finalization of this dax-dma-vs-trnucate work will
  need to wait for 4.18.

  Summary:

   - A rework of the filesytem-dax implementation provides for detection
     of unmap operations (truncate / hole punch) colliding with
     in-progress device-DMA. A fix for these collisions remains a
     work-in-progress pending resolution of truncate latency and
     starvation regressions.

   - The of_pmem driver expands the users of libnvdimm outside of x86
     and ACPI to describe an implementation of persistent memory on
     PowerPC with Open Firmware / Device tree.

   - Address Range Scrub (ARS) handling is completely rewritten to
     account for the fact that ARS may run for 100s of seconds and there
     is no platform defined way to cancel it. ARS will now no longer
     block namespace initialization.

   - The NVDIMM Namespace Label implementation is updated to handle
     label areas as small as 1K, down from 128K.

   - Miscellaneous cleanups and updates to unit test infrastructure"

* tag 'libnvdimm-for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (39 commits)
  libnvdimm, of_pmem: workaround OF_NUMA=n build error
  nfit, address-range-scrub: add module option to skip initial ars
  nfit, address-range-scrub: rework and simplify ARS state machine
  nfit, address-range-scrub: determine one platform max_ars value
  powerpc/powernv: Create platform devs for nvdimm buses
  doc/devicetree: Persistent memory region bindings
  libnvdimm: Add device-tree based driver
  libnvdimm: Add of_node to region and bus descriptors
  libnvdimm, region: quiet region probe
  libnvdimm, namespace: use a safe lookup for dimm device name
  libnvdimm, dimm: fix dpa reservation vs uninitialized label area
  libnvdimm, testing: update the default smart ctrl_temperature
  libnvdimm, testing: Add emulation for smart injection commands
  nfit, address-range-scrub: introduce nfit_spa->ars_state
  libnvdimm: add an api to cast a 'struct nd_region' to its 'struct device'
  nfit, address-range-scrub: fix scrub in-progress reporting
  dax, dm: allow device-mapper to operate without dax support
  dax: introduce CONFIG_DAX_DRIVER
  fs, dax: use page->mapping to warn if truncate collides with a busy page
  ext2, dax: introduce ext2_dax_aops
  ...
2018-04-10 10:25:57 -07:00
Dan Williams 1ed41b5696 Merge branch 'for-4.17/libnvdimm' into libnvdimm-for-next 2018-04-09 10:50:08 -07:00
Dan Williams bca811a7fd nfit, address-range-scrub: add module option to skip initial ars
After attempting to quickly retrieve known errors the kernel proceeds to
kick off a long running ARS. Add a module option to disable this
behavior at initialization time, or at new region discovery time.
Otherwise, ARS can be started manually regardless of the state of this
setting.

Co-developed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-04-07 08:44:55 -07:00
Dan Williams bc6ba80858 nfit, address-range-scrub: rework and simplify ARS state machine
ARS is an operation that can take 10s to 100s of seconds to find media
errors that should rarely be present. If the platform crashes due to
media errors in persistent memory, the expectation is that the BIOS will
report those known errors in a 'short' ARS request.

A 'short' ARS request asks platform firmware to return an ARS payload
with all known errors, but without issuing a 'long' scrub. At driver
init a short request is issued to all PMEM ranges before registering
regions. Then, in the background, a long ARS is scheduled for each
region.

The ARS implementation is simplified to centralize ARS completion work
in the ars_complete() helper. The timeout is removed since there is no
facility to cancel ARS, and this otherwise arranges for system init to
never be blocked waiting for a 'long' ARS. The ars_state flags are used
to coordinate ARS requests from driver init, ARS requests from
userspace, and ARS requests in response to media error notifications.

Given that there is no notification of ARS completion the implementation
still needs to poll. It backs off exponentially to a maximum poll period
of 30 minutes.

Suggested-by: Toshi Kani <toshi.kani@hpe.com>
Co-developed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-04-07 07:55:05 -07:00
Dan Williams 459d0ddb07 nfit, address-range-scrub: determine one platform max_ars value
acpi_nfit_query_poison() is awkward in that it requires an nfit_spa
argument in order to determine what max_ars value to use. Instead probe
for the minimum max_ars across all scrub-capable ranges in the system
and drop the nfit_spa argument.

This enables a larger rework / simplification of the ARS state machine
whereby the status can be retrieved once and then iterated over all
address ranges to reap completions.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-04-07 07:55:05 -07:00
Linus Torvalds 3c0d551e02 pci-v4.17-changes
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Merge tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - move pci_uevent_ers() out of pci.h (Michael Ellerman)

 - skip ASPM common clock warning if BIOS already configured it (Sinan
   Kaya)

 - fix ASPM Coverity warning about threshold_ns (Gustavo A. R. Silva)

 - remove last user of pci_get_bus_and_slot() and the function itself
   (Sinan Kaya)

 - add decoding for 16 GT/s link speed (Jay Fang)

 - add interfaces to get max link speed and width (Tal Gilboa)

 - add pcie_bandwidth_capable() to compute max supported link bandwidth
   (Tal Gilboa)

 - add pcie_bandwidth_available() to compute bandwidth available to
   device (Tal Gilboa)

 - add pcie_print_link_status() to log link speed and whether it's
   limited (Tal Gilboa)

 - use PCI core interfaces to report when device performance may be
   limited by its slot instead of doing it in each driver (Tal Gilboa)

 - fix possible cpqphp NULL pointer dereference (Shawn Lin)

 - rescan more of the hierarchy on ACPI hotplug to fix Thunderbolt/xHCI
   hotplug (Mika Westerberg)

 - add support for PCI I/O port space that's neither directly accessible
   via CPU in/out instructions nor directly mapped into CPU physical
   memory space. This is fairly intrusive and includes minor changes to
   interfaces used for I/O space on most platforms (Zhichang Yuan, John
   Garry)

 - add support for HiSilicon Hip06/Hip07 LPC I/O space (Zhichang Yuan,
   John Garry)

 - use PCI_EXP_DEVCTL2_COMP_TIMEOUT in rapidio/tsi721 (Bjorn Helgaas)

 - remove possible NULL pointer dereference in of_pci_bus_find_domain_nr()
   (Shawn Lin)

 - report quirk timings with dev_info (Bjorn Helgaas)

 - report quirks that take longer than 10ms (Bjorn Helgaas)

 - add and use Altera Vendor ID (Johannes Thumshirn)

 - tidy Makefiles and comments (Bjorn Helgaas)

 - don't set up INTx if MSI or MSI-X is enabled to align cris, frv,
   ia64, and mn10300 with x86 (Bjorn Helgaas)

 - move pcieport_if.h to drivers/pci/pcie/ to encapsulate it (Frederick
   Lawler)

 - merge pcieport_if.h into portdrv.h (Bjorn Helgaas)

 - move workaround for BIOS PME issue from portdrv to PCI core (Bjorn
   Helgaas)

 - completely disable portdrv with "pcie_ports=compat" (Bjorn Helgaas)

 - remove portdrv link order dependency (Bjorn Helgaas)

 - remove support for unused VC portdrv service (Bjorn Helgaas)

 - simplify portdrv feature permission checking (Bjorn Helgaas)

 - remove "pcie_hp=nomsi" parameter (use "pci=nomsi" instead) (Bjorn
   Helgaas)

 - remove unnecessary "pcie_ports=auto" parameter (Bjorn Helgaas)

 - use cached AER capability offset (Frederick Lawler)

 - don't enable DPC if BIOS hasn't granted AER control (Mika Westerberg)

 - rename pcie-dpc.c to dpc.c (Bjorn Helgaas)

 - use generic pci_mmap_resource_range() instead of powerpc and xtensa
   arch-specific versions (David Woodhouse)

 - support arbitrary PCI host bridge offsets on sparc (Yinghai Lu)

 - remove System and Video ROM reservations on sparc (Bjorn Helgaas)

 - probe for device reset support during enumeration instead of runtime
   (Bjorn Helgaas)

 - add ACS quirk for Ampere (née APM) root ports (Feng Kan)

 - add function 1 DMA alias quirk for Marvell 88SE9220 (Thomas
   Vincent-Cross)

 - protect device restore with device lock (Sinan Kaya)

 - handle failure of FLR gracefully (Sinan Kaya)

 - handle CRS (config retry status) after device resets (Sinan Kaya)

 - skip various config reads for SR-IOV VFs as an optimization
   (KarimAllah Ahmed)

 - consolidate VPD code in vpd.c (Bjorn Helgaas)

 - add Tegra dependency on PCI_MSI_IRQ_DOMAIN (Arnd Bergmann)

 - add DT support for R-Car r8a7743 (Biju Das)

 - fix a PCI_EJECT vs PCI_BUS_RELATIONS race condition in Hyper-V host
   bridge driver that causes a general protection fault (Dexuan Cui)

 - fix Hyper-V host bridge hang in MSI setup on 1-vCPU VMs with SR-IOV
   (Dexuan Cui)

 - fix Hyper-V host bridge hang when ejecting a VF before setting up MSI
   (Dexuan Cui)

 - make several structures static (Fengguang Wu)

 - increase number of MSI IRQs supported by Synopsys DesignWare bridges
   from 32 to 256 (Gustavo Pimentel)

 - implemented multiplexed IRQ domain API and remove obsolete MSI IRQ
   API from DesignWare drivers (Gustavo Pimentel)

 - add Tegra power management support (Manikanta Maddireddy)

 - add Tegra loadable module support (Manikanta Maddireddy)

 - handle 64-bit BARs correctly in endpoint support (Niklas Cassel)

 - support optional regulator for HiSilicon STB (Shawn Guo)

 - use regulator bulk API for Qualcomm apq8064 (Srinivas Kandagatla)

 - support power supplies for Qualcomm msm8996 (Srinivas Kandagatla)

* tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (123 commits)
  MAINTAINERS: Add John Garry as maintainer for HiSilicon LPC driver
  HISI LPC: Add ACPI support
  ACPI / scan: Do not enumerate Indirect IO host children
  ACPI / scan: Rename acpi_is_serial_bus_slave() for more general use
  HISI LPC: Support the LPC host on Hip06/Hip07 with DT bindings
  of: Add missing I/O range exception for indirect-IO devices
  PCI: Apply the new generic I/O management on PCI IO hosts
  PCI: Add fwnode handler as input param of pci_register_io_range()
  PCI: Remove __weak tag from pci_register_io_range()
  MAINTAINERS: Add missing /drivers/pci/cadence directory entry
  fm10k: Report PCIe link properties with pcie_print_link_status()
  net/mlx5e: Use pcie_bandwidth_available() to compute bandwidth
  net/mlx5: Report PCIe link properties with pcie_print_link_status()
  net/mlx4_core: Report PCIe link properties with pcie_print_link_status()
  PCI: Add pcie_print_link_status() to log link speed and whether it's limited
  PCI: Add pcie_bandwidth_available() to compute bandwidth available to device
  misc: pci_endpoint_test: Handle 64-bit BARs properly
  PCI: designware-ep: Make dw_pcie_ep_reset_bar() handle 64-bit BARs properly
  PCI: endpoint: Make sure that BAR_5 does not have 64-bit flag set when clearing
  PCI: endpoint: Make epc->ops->clear_bar()/pci_epc_clear_bar() take struct *epf_bar
  ...
2018-04-06 18:31:06 -07:00
Dan Williams 14c73f997a nfit, address-range-scrub: introduce nfit_spa->ars_state
In preparation for re-working the ARS implementation to better handle
short vs long ARS runs, introduce nfit_spa->ars_state. For now this just
replaces the nfit_spa->ars_required bit-field/flag, but going forward it
will be used to track ARS completion and make short vs long ARS
requests.

Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-04-05 20:10:55 -07:00
Linus Torvalds dd972f924d * Add NVDIMM support to EDAC (Tony Luck)
* misc fixes
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Merge tag 'edac_for_4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC updates from Borislav Petkov:
 "Noteworthy is the NVDIMM support:

   - NVDIMM support to EDAC (Tony Luck)

   - misc fixes"

* tag 'edac_for_4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC, sb_edac: Remove variable length array usage
  EDAC, skx_edac: Detect non-volatile DIMMs
  firmware, DMI: Add function to look up a handle and return DIMM size
  acpi, nfit: Add function to look up nvdimm device and provide SMBIOS handle
  EDAC: Add new memory type for non-volatile DIMMs
  EDAC: Drop duplicated array of strings for memory type names
  EDAC, layerscape: Allow building for LS1021A
2018-04-05 14:21:13 -07:00
Linus Torvalds 672a9c1069 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree updates from Jiri Kosina.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial:
  kfifo: fix inaccurate comment
  tools/thermal: tmon: fix for segfault
  net: Spelling s/stucture/structure/
  edd: don't spam log if no EDD information is present
  Documentation: Fix early-microcode.txt references after file rename
  tracing: Block comments should align the * on each line
  treewide: Fix typos in printk
  GenWQE: Fix a typo in two comments
  treewide: Align function definition open/close braces
2018-04-05 11:56:35 -07:00
Linus Torvalds 23221d997b arm64 updates for 4.17
Nothing particularly stands out here, probably because people were tied
 up with spectre/meltdown stuff last time around. Still, the main pieces
 are:
 
 - Rework of our CPU features framework so that we can whitelist CPUs that
   don't require kpti even in a heterogeneous system
 
 - Support for the IDC/DIC architecture extensions, which allow us to elide
   instruction and data cache maintenance when writing out instructions
 
 - Removal of the large memory model which resulted in suboptimal codegen
   by the compiler and increased the use of literal pools, which could
   potentially be used as ROP gadgets since they are mapped as executable
 
 - Rework of forced signal delivery so that the siginfo_t is well-formed
   and handling of show_unhandled_signals is consolidated and made
   consistent between different fault types
 
 - More siginfo cleanup based on the initial patches from Eric Biederman
 
 - Workaround for Cortex-A55 erratum #1024718
 
 - Some small ACPI IORT updates and cleanups from Lorenzo Pieralisi
 
 - Misc cleanups and non-critical fixes
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "Nothing particularly stands out here, probably because people were
  tied up with spectre/meltdown stuff last time around. Still, the main
  pieces are:

   - Rework of our CPU features framework so that we can whitelist CPUs
     that don't require kpti even in a heterogeneous system

   - Support for the IDC/DIC architecture extensions, which allow us to
     elide instruction and data cache maintenance when writing out
     instructions

   - Removal of the large memory model which resulted in suboptimal
     codegen by the compiler and increased the use of literal pools,
     which could potentially be used as ROP gadgets since they are
     mapped as executable

   - Rework of forced signal delivery so that the siginfo_t is
     well-formed and handling of show_unhandled_signals is consolidated
     and made consistent between different fault types

   - More siginfo cleanup based on the initial patches from Eric
     Biederman

   - Workaround for Cortex-A55 erratum #1024718

   - Some small ACPI IORT updates and cleanups from Lorenzo Pieralisi

   - Misc cleanups and non-critical fixes"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (70 commits)
  arm64: uaccess: Fix omissions from usercopy whitelist
  arm64: fpsimd: Split cpu field out from struct fpsimd_state
  arm64: tlbflush: avoid writing RES0 bits
  arm64: cmpxchg: Include linux/compiler.h in asm/cmpxchg.h
  arm64: move percpu cmpxchg implementation from cmpxchg.h to percpu.h
  arm64: cmpxchg: Include build_bug.h instead of bug.h for BUILD_BUG
  arm64: lse: Include compiler_types.h and export.h for out-of-line LL/SC
  arm64: fpsimd: include <linux/init.h> in fpsimd.h
  drivers/perf: arm_pmu_platform: do not warn about affinity on uniprocessor
  perf: arm_spe: include linux/vmalloc.h for vmap()
  Revert "arm64: Revert L1_CACHE_SHIFT back to 6 (64-byte cache line size)"
  arm64: cpufeature: Avoid warnings due to unused symbols
  arm64: Add work around for Arm Cortex-A55 Erratum 1024718
  arm64: Delay enabling hardware DBM feature
  arm64: Add MIDR encoding for Arm Cortex-A55 and Cortex-A35
  arm64: capabilities: Handle shared entries
  arm64: capabilities: Add support for checks based on a list of MIDRs
  arm64: Add helpers for checking CPU MIDR against a range
  arm64: capabilities: Clean up midr range helpers
  arm64: capabilities: Change scope of VHE to Boot CPU feature
  ...
2018-04-04 16:01:43 -07:00
Bjorn Helgaas 64ae499cf2 Merge branch 'pci/portdrv'
- move pcieport_if.h to drivers/pci/pcie/ to encapsulate it (Frederick
    Lawler)

  - merge pcieport_if.h into portdrv.h (Bjorn Helgaas)

  - move workaround for BIOS PME issue from portdrv to PCI core (Bjorn
    Helgaas)

  - completely disable portdrv with "pcie_ports=compat" (Bjorn Helgaas)

  - remove portdrv link order dependency (Bjorn Helgaas)

  - remove support for unused VC portdrv service (Bjorn Helgaas)

  - simplify portdrv feature permission checking (Bjorn Helgaas)

  - remove "pcie_hp=nomsi" parameter (use "pci=nomsi" instead) (Bjorn
    Helgaas)

  - remove unnecessary "pcie_ports=auto" parameter (Bjorn Helgaas)

  - use cached AER capability offset (Frederick Lawler)

  - don't enable DPC if BIOS hasn't granted AER control (Mika Westerberg)

  - rename pcie-dpc.c to dpc.c (Bjorn Helgaas)

* pci/portdrv:
  PCI/DPC: Rename from pcie-dpc.c to dpc.c
  PCI/DPC: Do not enable DPC if AER control is not allowed by the BIOS
  PCI/AER: Use cached AER Capability offset
  PCI/portdrv: Rename and reverse sense of pcie_ports_auto
  PCI/portdrv: Encapsulate pcie_ports_auto inside the port driver
  PCI/portdrv: Remove unnecessary "pcie_ports=auto" parameter
  PCI/portdrv: Remove "pcie_hp=nomsi" kernel parameter
  PCI/portdrv: Remove unnecessary include of <linux/pci-aspm.h>
  PCI/portdrv: Simplify PCIe feature permission checking
  PCI/portdrv: Remove unused PCIE_PORT_SERVICE_VC
  PCI/portdrv: Remove pcie_port_bus_type link order dependency
  PCI/portdrv: Disable port driver in compat mode
  PCI/PM: Clear PCIe PME Status bit for Root Complex Event Collectors
  PCI/PM: Clear PCIe PME Status bit in core, not PCIe port driver
  PCI/PM: Move pcie_clear_root_pme_status() to core
  PCI/portdrv: Merge pcieport_if.h into portdrv.h
  PCI/portdrv: Move pcieport_if.h to drivers/pci/pcie/

Conflicts:
	drivers/pci/pcie/Makefile
	drivers/pci/pcie/portdrv.h
2018-04-04 13:27:58 -05:00
John Garry dfda449232 ACPI / scan: Do not enumerate Indirect IO host children
Through the logical PIO framework, systems which otherwise have no IO space
access to legacy ISA/LPC devices may access these devices through so-called
"indirect IO" method.  In this, IO space accesses for non-PCI hosts are
redirected to a host LLDD to manually generate the IO space (bus) accesses.
Hosts are able to register a region in logical PIO space to map to its bus
address range.

Indirect IO child devices have an associated host-specific bus address.
Special translation is required to map between a logical PIO address for a
device and its host bus address.

Since in the ACPI tables the child device IO resources would be the
host-specific values, it is required the ACPI scan code should not
enumerate these devices, and that this should be the responsibility of the
host driver so that it can "fixup" the resources so that they map to the
appropriate logical PIO addresses.

To avoid enumerating these child devices, add a check from
acpi_device_enumeration_by_parent() as to whether the parent for a device
is a member of a known list of "indirect IO" hosts.  For now, the HiSilicon
LPC host controller ID is added.

Tested-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-04-04 08:42:50 -05:00
John Garry d87fb0917a ACPI / scan: Rename acpi_is_serial_bus_slave() for more general use
Currently the ACPI scan has special handling for serial bus slaves, in that
it makes it the responsibility of the slave device's parent to enumerate
the device.

To support other types of slave devices which require the same special
handling but where the bus is not strictly a serial bus, such as devices on
the HiSilicon LPC controller bus, rename acpi_is_serial_bus_slave() to
acpi_device_enumeration_by_parent(), so that the name can fit the wider
purpose.

Also rename the associated device flag acpi_device_flags.serial_bus_slave
to .enumeration_by_parent.

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-04-04 08:42:49 -05:00
Gabriele Paoloni fcfaab3093 PCI: Add fwnode handler as input param of pci_register_io_range()
In preparation for having the PCI MMIO helpers use the new generic I/O
space management (logical PIO) we need to add the fwnode handler as an
extra input parameter.

Changes the signature of pci_register_io_range() and its callers as
needed.

Tested-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
2018-04-04 08:42:45 -05:00
Dan Williams 78727137fd nfit, address-range-scrub: fix scrub in-progress reporting
There is a small window whereby ARS scan requests can schedule work that
userspace will miss when polling scrub_show. Hold the init_mutex lock
over calls to report the status to close this potential escape. Also,
make sure that requests to cancel the ARS workqueue are treated as an
idle event.

Cc: <stable@vger.kernel.org>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Fixes: 37b137ff8c ("nfit, libnvdimm: allow an ARS scrub...")
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-04-03 11:51:42 -07:00
Linus Torvalds f2d285669a Power management updates for 4.17-rc1
- Modify the cpuidle poll state implementation to prevent CPUs from
    staying in the loop in there for excessive times (Rafael Wysocki).
 
  - Add Intel Cannon Lake chips support to the RAPL power capping
    driver (Joe Konno).
 
  - Add reference counting to the device links handling code in the
    PM core (Lukas Wunner).
 
  - Avoid reconfiguring GPEs on suspend-to-idle in the ACPI system
    suspend code (Rafael Wysocki).
 
  - Allow devices to be put into deeper low-power states via ACPI
    if both _SxD and _SxW are missing (Daniel Drake).
 
  - Reorganize the core ACPI suspend-to-idle wakeup code to avoid a
    keyboard wakeup issue on Asus UX331UA (Chris Chiu).
 
  - Prevent the PCMCIA library code from aborting suspend-to-idle due
    to noirq suspend failures resulting from incorrect assumptions
    (Rafael Wysocki).
 
  - Add coupled cpuidle supprt to the Exynos3250 platform (Marek
    Szyprowski).
 
  - Add new sysfs file to make it easier to specify the image storage
    location during hibernation (Mario Limonciello).
 
  - Add sysfs files for collecting suspend-to-idle usage and time
    statistics for CPU idle states (Rafael Wysocki).
 
  - Update the pm-graph utilities (Todd Brandt).
 
  - Reduce the kernel log noise related to reporting Low-power Idle
    constraings by the ACPI system suspend code (Rafael Wysocki).
 
  - Make it easier to distinguish dedicated wakeup IRQs in the
    /proc/interrupts output (Tony Lindgren).
 
  - Add the frequency table validation in cpufreq to the core and
    drop it from a number of cpufreq drivers (Viresh Kumar).
 
  - Drop "cooling-{min|max}-level" for CPU nodes from a couple of
    DT bindings (Viresh Kumar).
 
  - Clean up the CPU online error code path in the cpufreq core
    (Viresh Kumar).
 
  - Fix assorted issues in the SCPI, CPPC, mediatek and tegra186
    cpufreq drivers (Arnd Bergmann, Chunyu Hu, George Cherian,
    Viresh Kumar).
 
  - Drop memory allocation error messages from a few places in
    cpufreq and cpuildle drivers (Markus Elfring).
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Merge tag 'pm-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "These update the cpuidle poll state definition to reduce excessive
  energy usage related to it, add new CPU ID to the RAPL power capping
  driver, update the ACPI system suspend code to handle some special
  cases better, extend the PM core's device links code slightly, add new
  sysfs attribute for better suspend-to-idle diagnostics and easier
  hibernation handling, update power management tools and clean up
  cpufreq quite a bit.

  Specifics:

   - Modify the cpuidle poll state implementation to prevent CPUs from
     staying in the loop in there for excessive times (Rafael Wysocki).

   - Add Intel Cannon Lake chips support to the RAPL power capping
     driver (Joe Konno).

   - Add reference counting to the device links handling code in the PM
     core (Lukas Wunner).

   - Avoid reconfiguring GPEs on suspend-to-idle in the ACPI system
     suspend code (Rafael Wysocki).

   - Allow devices to be put into deeper low-power states via ACPI if
     both _SxD and _SxW are missing (Daniel Drake).

   - Reorganize the core ACPI suspend-to-idle wakeup code to avoid a
     keyboard wakeup issue on Asus UX331UA (Chris Chiu).

   - Prevent the PCMCIA library code from aborting suspend-to-idle due
     to noirq suspend failures resulting from incorrect assumptions
     (Rafael Wysocki).

   - Add coupled cpuidle supprt to the Exynos3250 platform (Marek
     Szyprowski).

   - Add new sysfs file to make it easier to specify the image storage
     location during hibernation (Mario Limonciello).

   - Add sysfs files for collecting suspend-to-idle usage and time
     statistics for CPU idle states (Rafael Wysocki).

   - Update the pm-graph utilities (Todd Brandt).

   - Reduce the kernel log noise related to reporting Low-power Idle
     constraings by the ACPI system suspend code (Rafael Wysocki).

   - Make it easier to distinguish dedicated wakeup IRQs in the
     /proc/interrupts output (Tony Lindgren).

   - Add the frequency table validation in cpufreq to the core and drop
     it from a number of cpufreq drivers (Viresh Kumar).

   - Drop "cooling-{min|max}-level" for CPU nodes from a couple of DT
     bindings (Viresh Kumar).

   - Clean up the CPU online error code path in the cpufreq core (Viresh
     Kumar).

   - Fix assorted issues in the SCPI, CPPC, mediatek and tegra186
     cpufreq drivers (Arnd Bergmann, Chunyu Hu, George Cherian, Viresh
     Kumar).

   - Drop memory allocation error messages from a few places in cpufreq
     and cpuildle drivers (Markus Elfring)"

* tag 'pm-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (56 commits)
  ACPI / PM: Fix keyboard wakeup from suspend-to-idle on ASUS UX331UA
  cpufreq: CPPC: Use transition_delay_us depending transition_latency
  PM / hibernate: Change message when writing to /sys/power/resume
  PM / hibernate: Make passing hibernate offsets more friendly
  cpuidle: poll_state: Avoid invoking local_clock() too often
  PM: cpuidle/suspend: Add s2idle usage and time state attributes
  cpuidle: Enable coupled cpuidle support on Exynos3250 platform
  cpuidle: poll_state: Add time limit to poll_idle()
  cpufreq: tegra186: Don't validate the frequency table twice
  cpufreq: speedstep: Don't validate the frequency table twice
  cpufreq: sparc: Don't validate the frequency table twice
  cpufreq: sh: Don't validate the frequency table twice
  cpufreq: sfi: Don't validate the frequency table twice
  cpufreq: scpi: Don't validate the frequency table twice
  cpufreq: sc520: Don't validate the frequency table twice
  cpufreq: s3c24xx: Don't validate the frequency table twice
  cpufreq: qoirq: Don't validate the frequency table twice
  cpufreq: pxa: Don't validate the frequency table twice
  cpufreq: ppc_cbe: Don't validate the frequency table twice
  cpufreq: powernow: Don't validate the frequency table twice
  ...
2018-04-03 10:45:39 -07:00
Linus Torvalds be55375427 ACPI updates for 4.17-rc1
- Update the in-kernel ACPICA code to upstream revision 20180313
    including:
    * Module-level AML code handling fixes and simplifications (Bob
      Moore, Erik Schmauss).
    * Fixes and cleanups related to messaging (Bob Moore).
    * Events handling fixes related to disabling and enabling GPEs
      (Erik Schmauss).
    * Introduction of SPDX license identifiers and removal of license
      boilerplate in multiple files (Erik Schmauss).
    * Assorted fixes and cleanups (Bob Moore, Erik Schmauss, Hans
      de Goede, Seunghun Han).
 
  - Add new basic driver for the ACPI Time and Alarm Device (Rafael
    Wysocki).
 
  - Modify the ACPI battery driver to support battery thresholds on
    Lenovo ThinkPads (Ognjen Galic, Colin Ian King).
 
  - Avoid reporting battery capacity over 100 in the ACPI battery
    driver in some cases (Laszlo Toth).
 
  - Make the kernel recognize an OEM _OSI string from Dell to avoid
    power management issues with NVidia GPUs in Dell platforms (Alex
    Hung).
 
  - Make the PCI IRQ management code handle missing _PRS cleanly (Alex
    Hung).
 
  - Fix uevent notifications related to device hotplut (Lee, Chun-Yi).
 
  - Prevent the ACPI PAD driver from leaking memory (Lenny Szubowicz).
 
  - Update the ACPI CPPC library code to include subspace IDs in the
    kernel messages logged by it (George Cherian).
 
  - Add backlight quirk for Samsung 670Z5E (Hans de Goede).
 
  - Add the NFIT and HMAT tables to the list of ACPI tables that can
    be overridden via initrd (Dan Williams).
 
  - Fix and clean up some ACPI documentation and Kconfig help language
    (Aishwarya Pant, Randy Dunlap).
 
  - Replace license boilerplate with an SPDX license ID in the ACPI
    PMIC operation region handling code (Rajmohan Mani).
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Merge tag 'acpi-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These update the ACPICA code in the kernel to follow upstream revision
  20180313 which includes fixes related to the so-called module-level
  AML (mostly "if" type of statements outside of any methods) that
  should improve the handling of systems that load alternative SSDTs
  depending on the current configuration, for example, and event
  handling fixes related to disabling and enabling GPEs on system
  startup and on suspend/resume.

  Moreover, the ACPICA license boilerplate is replaced with SPDX license
  IDs which alone reduces the number of lines of ACPICA code in the
  kernel quite a bit.

  Also added is a new driver for the generic ACPI Time and Alarm Device
  (TAD). At the moment it only handles the most basic capabilities of
  the TAD, however.

  In addition to that the ACPI battery driver is improved to handle
  battery thresholds on ThinkPads, among other things, some bugs are
  fixed, a new backlight quirk is added and some documentation is
  updated.

  Specifics:

   - Update the in-kernel ACPICA code to upstream revision 20180313
     including:
      * Module-level AML code handling fixes and simplifications (Bob
        Moore, Erik Schmauss).
      * Fixes and cleanups related to messaging (Bob Moore).
      * Events handling fixes related to disabling and enabling GPEs
        (Erik Schmauss).
      * Introduction of SPDX license identifiers and removal of license
        boilerplate in multiple files (Erik Schmauss).
      * Assorted fixes and cleanups (Bob Moore, Erik Schmauss, Hans de
        Goede, Seunghun Han).

   - Add new basic driver for the ACPI Time and Alarm Device (Rafael
     Wysocki).

   - Modify the ACPI battery driver to support battery thresholds on
     Lenovo ThinkPads (Ognjen Galic, Colin Ian King).

   - Avoid reporting battery capacity over 100 in the ACPI battery
     driver in some cases (Laszlo Toth).

   - Make the kernel recognize an OEM _OSI string from Dell to avoid
     power management issues with NVidia GPUs in Dell platforms (Alex
     Hung).

   - Make the PCI IRQ management code handle missing _PRS cleanly (Alex
     Hung).

   - Fix uevent notifications related to device hotplut (Lee, Chun-Yi).

   - Prevent the ACPI PAD driver from leaking memory (Lenny Szubowicz).

   - Update the ACPI CPPC library code to include subspace IDs in the
     kernel messages logged by it (George Cherian).

   - Add backlight quirk for Samsung 670Z5E (Hans de Goede).

   - Add the NFIT and HMAT tables to the list of ACPI tables that can be
     overridden via initrd (Dan Williams).

   - Fix and clean up some ACPI documentation and Kconfig help language
     (Aishwarya Pant, Randy Dunlap).

   - Replace license boilerplate with an SPDX license ID in the ACPI
     PMIC operation region handling code (Rajmohan Mani)"

* tag 'acpi-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (39 commits)
  ACPI: acpi_pad: Fix memory leak in power saving threads
  ACPI / video: Add quirk to force acpi-video backlight on Samsung 670Z5E
  ACPI: Add Time and Alarm Device (TAD) driver
  ACPI / scan: Send change uevent with offine environmental data
  ACPI / Kconfig: Update ACPI_PROCFS_POWER help text
  ACPI / OSI: Add OEM _OSI strings to disable NVidia RTD3
  ACPICA: Update version to 20180313
  ACPICA: Cleanup/simplify module-level code support
  ACPICA: Events: add a return on failure from acpi_hw_register_read
  ACPICA: adding SPDX headers
  ACPICA: Rename a global for clarity, no functional change
  ACPICA: macros: fix ACPI_ERROR_NAMESPACE macro
  ACPICA: Change a compile-time option to a runtime option
  ACPICA: Remove calling of _STA from acpi_get_object_info()
  ACPICA: AML Debug Object: Don't ignore output of zero-length strings
  ACPICA: Fix memory leak on unusual memory leak
  ACPICA: Events: Dispatch GPEs after enabling for the first time
  ACPICA: Events: Add parallel GPE handling support to fix potential redundant _Exx evaluations
  ACPICA: Events: Stop unconditionally clearing ACPI IRQs during suspend/resume
  ACPICA: acpi: acpica: fix acpi operand cache leak in nseval.c
  ...
2018-04-03 10:38:46 -07:00
Dan Williams 8d0d8ed335 nfit: fix region registration vs block-data-window ranges
Commit 1cf03c00e7 "nfit: scrub and register regions in a workqueue"
mistakenly attempts to register a region per BLK aperture. There is
nothing to register for individual apertures as they belong as a set to
a BLK aperture group that are registered with a corresponding
DIMM-control-region. Filter them for registration to prevent some
needless devm_kzalloc() allocations.

Cc: <stable@vger.kernel.org>
Fixes: 1cf03c00e7 ("nfit: scrub and register regions in a workqueue")
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-04-02 16:49:30 -07:00
Linus Torvalds cea061e455 Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Add "Jailhouse" hypervisor support (Jan Kiszka)

   - Update DeviceTree support (Ivan Gorinov)

   - Improve DMI date handling (Andy Shevchenko)"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/PCI: Fix a potential regression when using dmi_get_bios_year()
  firmware/dmi_scan: Uninline dmi_get_bios_year() helper
  x86/devicetree: Use CPU description from Device Tree
  of/Documentation: Specify local APIC ID in "reg"
  MAINTAINERS: Add entry for Jailhouse
  x86/jailhouse: Allow to use PCI_MMCONFIG without ACPI
  x86: Consolidate PCI_MMCONFIG configs
  x86: Align x86_64 PCI_MMCONFIG with 32-bit variant
  x86/jailhouse: Enable PCI mmconfig access in inmates
  PCI: Scan all functions when running over Jailhouse
  jailhouse: Provide detection for non-x86 systems
  x86/devicetree: Fix device IRQ settings in DT
  x86/devicetree: Initialize device tree before using it
  pci: Simplify code by using the new dmi_get_bios_year() helper
  ACPI/sleep: Simplify code by using the new dmi_get_bios_year() helper
  x86/pci: Simplify code by using the new dmi_get_bios_year() helper
  dmi: Introduce the dmi_get_bios_year() helper function
  x86/platform/quark: Re-use DEFINE_SHOW_ATTRIBUTE() macro
  x86/platform/atom: Re-use DEFINE_SHOW_ATTRIBUTE() macro
2018-04-02 16:15:32 -07:00
Rafael J. Wysocki 49076b2c64 Merge branches 'acpi-osi', 'acpi-scan', 'acpi-tad', 'acpi-video' and 'acpi-misc'
* acpi-osi:
  ACPI / OSI: Add OEM _OSI strings to disable NVidia RTD3

* acpi-scan:
  ACPI / scan: Send change uevent with offine environmental data

* acpi-tad:
  ACPI: Add Time and Alarm Device (TAD) driver

* acpi-video:
  ACPI / video: Add quirk to force acpi-video backlight on Samsung 670Z5E

* acpi-misc:
  ACPI / Kconfig: Update ACPI_PROCFS_POWER help text
2018-04-02 10:59:01 +02:00
Rafael J. Wysocki 81616dfa2d Merge branches 'acpi-tables', 'acpi-cppc' and 'acpi-pci'
* acpi-tables:
  ACPI: add NFIT and HMAT to the initrd override list

* acpi-cppc:
  ACPI / CPPC: Update all pr_(debug/err) messages to log the susbspace id

* acpi-pci:
  ACPI / PCI: pci_link: Allow the absence of _PRS and change log level
2018-04-02 10:58:39 +02:00
Rafael J. Wysocki 0c9ed61bdd Merge branches 'acpi-battery', 'acpi-doc' and 'acpi-pmic'
* acpi-battery:
  Revert "ACPI: battery: Add the ThinkPad "Not Charging" quirk"
  ACPI: battery: do not export degraded capacity values over 100
  ACPI: battery: make function __battery_hook_unregister() static
  ACPI: battery: Add the ThinkPad "Not Charging" quirk
  thinkpad_acpi: Add support for battery thresholds
  power: add to_power_supply macro to the API
  battery: Add the battery hooking API

* acpi-doc:
  ACPI: sysfs: Update device object sysfs documentation

* acpi-pmic:
  ACPI / PMIC: Replace license boilerplate with SPDX license identifier
2018-04-02 10:58:13 +02:00
Rafael J. Wysocki ae02168d78 Merge branch 'acpica'
* acpica: (21 commits)
  ACPICA: Update version to 20180313
  ACPICA: Cleanup/simplify module-level code support
  ACPICA: Events: add a return on failure from acpi_hw_register_read
  ACPICA: adding SPDX headers
  ACPICA: Rename a global for clarity, no functional change
  ACPICA: macros: fix ACPI_ERROR_NAMESPACE macro
  ACPICA: Change a compile-time option to a runtime option
  ACPICA: Remove calling of _STA from acpi_get_object_info()
  ACPICA: AML Debug Object: Don't ignore output of zero-length strings
  ACPICA: Fix memory leak on unusual memory leak
  ACPICA: Events: Dispatch GPEs after enabling for the first time
  ACPICA: Events: Add parallel GPE handling support to fix potential redundant _Exx evaluations
  ACPICA: Events: Stop unconditionally clearing ACPI IRQs during suspend/resume
  ACPICA: acpi: acpica: fix acpi operand cache leak in nseval.c
  ACPICA: Update version to 20180209
  ACPICA: Add option to disable Package object name resolution errors
  ACPICA: Integrate package handling with module-level code
  ACPICA: Revert "Fix for implicit result conversion for the To____ functions"
  ACPICA: Update for some debug output. No functional change
  ACPICA: Update error message, no functional change
  ...
2018-04-02 10:57:58 +02:00
Chris Chiu 6f1d7c45db ACPI / PM: Fix keyboard wakeup from suspend-to-idle on ASUS UX331UA
This issue happens on new ASUS laptop UX331UA which has modern
standby mode (suspend-to-idle). Pressing keys on the PS2 keyboard
can't wake up the system from suspend-to-idle which is not expected.
However, pressing power button can wake up without problem.

Per the engineers of ASUS, the keypress event is routed to Embedded
Controller (EC) in standby mode. EC then signals the SCI event to
BIOS so BIOS would Notify() power button to wake up the system. It's
from BIOS perspective. What we observe here is that kernel receives
the SCI event from SCI interrupt handler which informs that the GPE
status bit belongs to EC needs to be handled and then queries the EC
to find out what event is pending. Then execute the following ACPI
_QDF method which defined in ACPI DSDT for EC to notify power button.

 Method (_QDF, 0, NotSerialized)  // _Qxx: EC Query
        {
            Notify (PWRB, 0x80) // Status Change
        }

With more debug messages added to analyze this problem, we find that
the keypress does wake up the system from suspend-to-idle but it's back
to suspend again almost immediately. As we see in the following messages,
the acpi_button_notify() is invoked but acpi_pm_wakeup_event() can not
really wake up the system here because acpi_s2idle_wakeup() is false.
The acpi_s2idle_wakeup() returnd false because the acpi_s2idle_sync() has
alrealdy exited.

[   52.987048] s2idle_loop going s2idle
[   59.713392] acpi_s2idle_wake enter
[   59.713394] acpi_s2idle_wake exit
[   59.760888] acpi_ev_gpe_detect enter
[   59.760893] acpi_s2idle_sync enter
[   59.760893] acpi_ec_query_flushed ec pending queries 0
[   59.760953] Read registers for GPE 50-57: Status=01, Enable=01, RunEnable=01, WakeEnable=00
[   59.760955] ACPI: EC: ===== IRQ (1) =====
[   59.760972] ACPI: EC: EC_SC(R) = 0x28 SCI_EVT=1 BURST=0 CMD=1 IBF=0 OBF=0
[   59.760979] ACPI: EC: +++++ Polling enabled +++++
[   59.760979] ACPI: EC: ##### Command(QR_EC) submitted/blocked #####
[   59.761003] acpi_s2idle_sync exit
[   59.769587] ACPI: EC: ##### Query(0xdf) started #####
[   59.769611] ACPI: EC: ##### Query(0xdf) stopped #####
[   59.774154] acpi_button_notify button type 1
[   59.813175] s2idle_loop going s2idle

acpi_s2idle_sync() already makes an effort to flush the EC event
queue, but in this case, the EC event has yet to be generated when
the call to acpi_ec_flush_work() is made. The event is generated
shortly after, through the ongoing handling of the SCI interrupt
which is happening on another CPU, and we must synchronize that
to make sure that it has run and completed. Adding another call to
acpi_os_wait_events_complete() solves this issue, since that
function synchronizes with SCI interrupt completion.

Signed-off-by: Chris Chiu <chiu@endlessm.com>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-31 11:00:55 +02:00
Bjorn Helgaas 02bfeb4842 PCI/portdrv: Simplify PCIe feature permission checking
Some PCIe features (AER, DPC, hotplug, PME) can be managed by either the
platform firmware or the OS, so the host bridge driver may have to request
permission from the platform before using them.  On ACPI systems, this is
done by negotiate_os_control() in acpi_pci_root_add().

The PCIe port driver later uses pcie_port_platform_notify() and
pcie_port_acpi_setup() to figure out whether it can use these features.
But all we need is a single bit for each service, so these interfaces are
needlessly complicated.

Simplify this by adding bits in the struct pci_host_bridge to show when the
OS has permission to use each feature:

  + unsigned int native_aer:1;       /* OS may use PCIe AER */
  + unsigned int native_hotplug:1;   /* OS may use PCIe hotplug */
  + unsigned int native_pme:1;       /* OS may use PCIe PME */

These are set when we create a host bridge, and the host bridge driver can
clear the bits corresponding to any feature the platform doesn't want us to
use.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-30 17:26:54 -05:00
Lenny Szubowicz 8b29d29abc ACPI: acpi_pad: Fix memory leak in power saving threads
Fix once per second (round_robin_time) memory leak of about 1 KB in
each acpi_pad kernel idling thread that is activated.

Found by testing with kmemleak.

Signed-off-by: Lenny Szubowicz <lszubowi@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-30 12:04:58 +02:00
Joerg Roedel d4f96fd5c2 Merge branches 'x86/amd', 'x86/vt-d', 'arm/rockchip', 'arm/omap', 'arm/mediatek', 'arm/exynos', 'arm/renesas', 'arm/smmu' and 'core' into next 2018-03-29 15:24:40 +02:00
Dan Williams 466d1493ea acpi, nfit: rework NVDIMM leaf method detection
Some BIOSen do not handle 0-byte transfer lengths for the _LSR and _LSW
(label storage read/write) methods. This causes Linux to fallback to the
deprecated _DSM path, or otherwise disable label support.

Introduce acpi_nvdimm_has_method() to detect whether a method is
available rather than calling the method, require _LSI and _LSR to be
paired, and require read support before enabling write support.

Cc: <stable@vger.kernel.org>
Fixes: 4b27db7e26 ("acpi, nfit: add support for the _LS...")
Suggested-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-03-28 10:44:50 -07:00
Ingo Molnar 0bc91d4ba7 Linux 4.16-rc7
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Merge tag 'v4.16-rc7' into x86/mm, to fix up conflict

 Conflicts:
	arch/x86/mm/init_64.c

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-03-27 08:43:39 +02:00
Joe Perches 447a5647c9 treewide: Align function definition open/close braces
Some functions definitions have either the initial open brace and/or
the closing brace outside of column 1.

Move those braces to column 1.

This allows various function analyzers like gnu complexity to work
properly for these modified functions.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-03-26 11:13:09 +02:00
Linus Torvalds 8401c72c59 Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
 "Two regression fixes, two bug fixes for older issues, two fixes for
  new functionality added this cycle that have userspace ABI concerns,
  and a small cleanup. These have appeared in a linux-next release and
  have a build success report from the 0day robot.

   * The 4.16 rework of altmap handling led to some configurations
     leaking page table allocations due to freeing from the altmap
     reservation rather than the page allocator.

     The impact without the fix is leaked memory and a WARN() message
     when tearing down libnvdimm namespaces. The rework also missed a
     place where error handling code needed to be removed that can lead
     to a crash if devm_memremap_pages() fails.

   * acpi_map_pxm_to_node() had a latent bug whereby it could
     misidentify the closest online node to a given proximity domain.

   * Block integrity handling was reworked several kernels back to allow
     calling add_disk() after setting up the integrity profile.

     The nd_btt and nd_blk drivers are just now catching up to fix
     automatic partition detection at driver load time.

   * The new peristence_domain attribute, a platform indicator of
     whether cpu caches are powerfail protected for example, is meant to
     be a single value enum and not a set of flags.

     This oversight was caught while reviewing new userspace code in
     libndctl to communicate the attribute.

     Fix this new enabling up so that we are not stuck with an unwanted
     userspace ABI"

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm, nfit: fix persistence domain reporting
  libnvdimm, region: hide persistence_domain when unknown
  acpi, numa: fix pxm to online numa node associations
  x86, memremap: fix altmap accounting at free
  libnvdimm: remove redundant assignment to pointer 'dev'
  libnvdimm, {btt, blk}: do integrity setup before add_disk()
  kernel/memremap: Remove stale devres_free() call
2018-03-22 18:37:49 -07:00
Rafael J. Wysocki 594fdbaab7 Merge branch 'acpi-wdat'
* acpi-wdat:
  ACPI / watchdog: Fix off-by-one error at resource assignment
2018-03-22 23:42:08 +01:00
Dan Williams 0731de476a nfit: skip region registration for incomplete control regions
Per the ACPI specification the only functional purpose for a DIMM
Control Region to be mapped into the system physical address space, from
an OSPM perspective, is to support block-apertures. However, there are
some BIOSen that publish DIMM Control Region SPA entries for pre-boot
environment consumption.  Undo the kernel policy of generating disabled
'ndblk' regions when this configuration is detected.

Cc: <stable@vger.kernel.org>
Fixes: 1f7df6f88b ("libnvdimm, nfit: regions (block-data-window...)")
Reviewed-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-03-21 21:39:27 -07:00
Dan Williams fe9a552e71 libnvdimm, nfit: fix persistence domain reporting
The persistence domain is a point in the platform where once writes
reach that destination the platform claims it will make them persistent
relative to power loss. In the ACPI NFIT this is currently communicated
as 2 bits in the "NFIT - Platform Capabilities Structure". The bits
comprise a hierarchy, i.e. bit0 "CPU Cache Flush to NVDIMM Durability on
Power Loss Capable" implies bit1 "Memory Controller Flush to NVDIMM
Durability on Power Loss Capable".

Commit 96c3a23905 "libnvdimm: expose platform persistence attr..."
shows the persistence domain as flags, but it's really an enumerated
hierarchy.

Fix this newly introduced user ABI to show the closest available
persistence domain before userspace develops dependencies on seeing, or
needing to develop code to tolerate, the raw NFIT flags communicated
through the libnvdimm-generic region attribute.

Fixes: 96c3a23905 ("libnvdimm: expose platform persistence attr...")
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-03-21 15:12:07 -07:00
Joao Martins 4d0f1ce695 xen/acpi: upload _PSD info for non Dom0 CPUs too
All uploaded PM data from non-dom0 CPUs takes the info from vCPU 0 and
changing only the acpi_id. For processors which P-state coordination type
is HW_ALL (0xFD) it is OK to upload bogus P-state dependency information
(_PSD), because Xen will ignore any cpufreq domains created for past CPUs.

Albeit for platforms which expose coordination types as SW_ANY or SW_ALL,
this will have some unintended side effects. Effectively, it will look at
the P-state domain existence and *if it already exists* it will skip the
acpi-cpufreq initialization and thus inherit the policy from the first CPU
in the cpufreq domain. This will finally lead to the original cpu not
changing target freq to P0 other than the first in the domain. Which will
make turbo boost not getting enabled (e.g. for 'performance' governor) for
all cpus.

This patch fixes that, by also evaluating _PSD when we enumerate all ACPI
processors and thus always uploading the correct info to Xen. We export
acpi_processor_get_psd() for that this purpose, but change signature
to not assume an existent of acpi_processor given that ACPI isn't creating
an acpi_processor for non-dom0 CPUs.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2018-03-21 08:29:13 -04:00
Hans de Goede bbf038618a ACPI / video: Add quirk to force acpi-video backlight on Samsung 670Z5E
Just like many other Samsung models, the 670Z5E needs to use the acpi-video
backlight interface rather then the native one for backlight control to
work, add a quirk for this.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1557060
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-20 10:38:17 +01:00
Rafael J. Wysocki 95c513ec84 ACPI: Add Time and Alarm Device (TAD) driver
Introduce a driver for the ACPI Time and Alarm Device (TAD) based on
Section 9.18 of ACPI 6.2.

This driver only supports the system wakeup capabilities of the TAD
which are mandatory.  Support for the RTC capabilities of the TAD
will be added to it in the future.

This driver is entirely sysfs-based.  It provides attributes (under
the TAD platform device) to allow user space to manage the AC and DC
wakeup timers of the TAD: set and read their values, set and check
their expire timer wake policies, check and clear their status and
check the capabilities of the TAD reported by AML.  The DC timer
attributes are only present if the TAD supports a separate DC alarm
timer.

The wakeup events handling and power management of the TAD is
expected to be taken care of by the ACPI PM domain attached to its
platform device.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2018-03-20 10:36:04 +01:00
Lee, Chun-Yi 27664c5818 ACPI / scan: Send change uevent with offine environmental data
In current design of ACPI container offline, Kernel emits
KOBJ_CHANGE uevent to user space to indidate that the ejection of
the container was triggered by platform. (caa73ea15 patch)

A pure KOBJ_CHANGE uevent is not enough for user space to identify
the purpose. For example, a "udevadm trigger" command can also
be used to emit change event to all udev rules. A udev rule can not
identify that the event is from kernel for offline or from udevadm
for other purpose. Then the offline action in udev rule may also be
triggered by udevadm tool.

So, similar to the change uevent of dock, kernel sends the
KOBJ_CHANGE uevent with a offline environmental data to indicate
purpose. It's useful by udev rule for using ENV{EVENT} filter.

Acked-by: Michal Hocko <mhocko@suse.com>
Tested-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: "Lee, Chun-Yi" <jlee@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-20 10:33:51 +01:00
Daniel Drake bf8c6184e0 ACPI / PM: Allow deeper wakeup power states with no _SxD nor _SxW
acpi_dev_pm_get_state() is used to determine the range of allowable
device power states when going into S3 suspend. This is implemented
by executing the _S3D and _S3W ACPI methods.

Linux follows the ACPI spec behaviour in that when _S3D is implemented
and _S3W is not, Linux will not go into a power state deeper than the one
returned by _S3D for a wakeup-enabled device.

However, this same logic is being applied to the case when neither
_S3D nor _S3W are present, and the result is that this function
decides that the device must stay in D0 (fully on) state.

This is breaking USB wakeups on Asus V222GA and Acer XC-830. _S3D and
_S3W are not present, so the USB controller is left in the D0 running
state during S3, and hence it is unable to generate a PME# wake event.

The ACPI spec is unclear on which power states are permissable for
wakeup-enabled devices when both _S3D and _S3W are missing.
However, USB wakeups work fine on these platforms under Windows, where
device manager shows that they are using D3 device state for the USB
controller in S3.

I assume that the "max = min" clamping done by the code here is
specifically written for the _S3D but no _S3W case. By making the
code true to those conditions, avoiding them on these platforms,
the controller will be put into D3 state and USB wakeups start working.

Additionally I feel that this change makes the code more directly
mirror the wording of the ACPI spec and it's associated lack of clarity.

Thanks to Mathias Nyman for pointing us in the right direction.

Signed-off-by: Daniel Drake <drake@endlessm.com>
Link: http://lkml.kernel.org/r/CAB4CAwf_k-WsF3zL4epm9TKAOu0h=Bv1XhXV_gY3bziOo_NPKA@mail.gmail.com

https://phabricator.endlessm.com/T21410
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-20 10:27:09 +01:00
Takashi Iwai b1abf6fc49 ACPI / watchdog: Fix off-by-one error at resource assignment
The resource allocation in WDAT watchdog has off-one-by error, it sets
one byte more than the actual end address.  This may eventually lead
to unexpected resource conflicts.

Fixes: 058dfc7670 (ACPI / watchdog: Add support for WDAT hardware watchdog)
Cc: 4.9+ <stable@vger.kernel.org> # 4.9+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-19 23:17:07 +01:00
Daniel Drake 82bf43b291 Revert "ACPI / battery: Add quirk for Asus GL502VSK and UX305LA"
Revert commit c68f0676ef ("ACPI / battery: Add quirk for Asus
GL502VSK and UX305LA") and commit 4446823e25 ("ACPI / battery: Add
quirk for Asus UX360UA and UX410UAK").

On many many Asus products, the battery is sometimes reported as
charging or discharging even when it is full and you are on AC power.
This change quirked the kernel to avoid advertising the discharging
state when this happens on 4 laptop models, under the belief that
this was incorrect information.  I presume it originates from user
reports who are confused that their battery status icon says that it
is discharging.

However, the reported information is indeed correct, and the quirk
approach taken is inadequate and more thought is needed first.
Specifically:

 1. It only quirks discharging state, not charging

 2. There are so many different Asus products and DMI naming variants
    within those product families that behave this way; Linux could
    grow to quirk hundreds of products and still not even be close at
    "winning" this battle.

 3. Asus previously clarified that this behaviour is intentional. The
    platform will periodically do a partial discharge/charge cycle
    when the battery is full, because this is one way to extend the
    lifetime of the battery (leaving a battery at 100% charge and
    unused will decrease its usable capacity over time).

    My understanding is that any decent consumer product will have
    this behaviour, but it appears that Asus is different in that
    they expose this info through ACPI.

    However, the behaviour seems correct. The ACPI spec does not
    suggest in that the platform should hide the truth.  It lets you
    report that the battery is full of charge, and discharging, and
    with external power connected; and Asus does this.

 4. In terms of not confusing the user, this seems like something that
    could/should be handled by userspace, which can also detect these
    same (accurate) conditions in the general case.

Revert this quirk before it gets included in a release, while we look
for better approaches.

Signed-off-by: Daniel Drake <drake@endlessm.com>
Acked-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-19 10:08:39 +01:00
Rafael J. Wysocki fa54150aad ACPI / PM: Reduce LPI constraints logging noise
If a device referred to by ACPI LPI constrains (coming from function 1
of the Low Power S0 Idle _DSM interface) is not power-manageable via
ACPI (no _PS0 method and no power resources), the code generating
diagnostic information for the LPI constraints will print a message
about that to the kernel log on every system suspend-resume cycle
(possibly for multiple times).

That is not very useful and noisy, so modify that code to disregard
the LPI list entries corresponding to the devices that are not power-
manageable after printing that information for them once.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2018-03-18 23:55:01 +01:00
Randy Dunlap 7e46b32bd5 ACPI / Kconfig: Update ACPI_PROCFS_POWER help text
Fix grammar and punctuation (end sentences with a period) in the
Kconfig help text for ACPI_PROCFS_POWER.

I was looking at this since it appears to be going away (again,
some day) and I have a working script that uses this info to tell me
battery usage. I can update the script to use /sys/class/power_supply
(in theory) but the contents (with units) should be documented in
Documentation/ABI/ before /proc/acpi/battery/ is removed (IMO).

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-18 23:49:42 +01:00
Alex Hung 9251a71db6 ACPI / OSI: Add OEM _OSI strings to disable NVidia RTD3
A number of Dell systems require an OEM _OSI string "Linux-Dell-Video"
as a BIOS workaround to disable RTD3 which causes systems hangs when
NVidia graphics cards are installed.  The affected Dell systems are
with system IDs: 0818, 0819, 0820, 0850, 0851, 086F, 0870, 0885 and
0886.

The form of the OEM _OSI strings is defined by each OEMs and is
discussed in Documentation/acpi/osi.txt.

Signed-off-by: Alex Hung <alex.hung@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-18 23:42:33 +01:00
Bob Moore a406dea82a ACPICA: Cleanup/simplify module-level code support
This prepares the code for eventual removal of the original
style of deferred execution of the MLC.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-18 19:29:46 +01:00
Erik Schmauss b4c0de3126 ACPICA: Events: add a return on failure from acpi_hw_register_read
This ensures that acpi_ev_fixed_event_detect() does not use fixed_status
and and fixed_enable as uninitialized variables.

Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-18 19:29:46 +01:00
Erik Schmauss 9585763888 ACPICA: adding SPDX headers
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-18 19:08:05 +01:00
Bob Moore e7d970f6fc ACPICA: Rename a global for clarity, no functional change
Was acpi_gbl_parse_table_as_term_list, changed to:
acpi_gbl_execute_tables_as_methods.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-18 18:52:00 +01:00