Commit Graph

1444 Commits

Author SHA1 Message Date
Linus Torvalds 425553209b PCI changes for the v3.16 merge window:
Enumeration
     - Notify driver before and after device reset (Keith Busch)
     - Use reset notification in NVMe (Keith Busch)
 
   NUMA
     - Warn if we have to guess host bridge node information (Myron Stowe)
     - Work around AMD Fam15h BIOSes that fail to provide _PXM (Suravee Suthikulpanit)
     - Clean up and mark early_root_info_init() as deprecated (Suravee Suthikulpanit)
 
   Driver binding
     - Add "driver_override" for force specific binding (Alex Williamson)
     - Fail "new_id" addition for devices we already know about (Bandan Das)
 
   Resource management
     - Support BAR sizes up to 8GB (Nikhil Rao, Alan Cox)
     - Don't move IORESOURCE_PCI_FIXED resources (Bjorn Helgaas)
     - Mark SBx00 HPET BAR as IORESOURCE_PCI_FIXED (Bjorn Helgaas)
     - Fail safely if we can't handle BARs larger than 4GB (Bjorn Helgaas)
     - Reject BAR above 4GB if dma_addr_t is too small (Bjorn Helgaas)
     - Don't convert BAR address to resource if dma_addr_t is too small (Bjorn Helgaas)
     - Don't set BAR to zero if dma_addr_t is too small (Bjorn Helgaas)
     - Don't print anything while decoding is disabled (Bjorn Helgaas)
     - Don't add disabled subtractive decode bus resources (Bjorn Helgaas)
     - Add resource allocation comments (Bjorn Helgaas)
     - Restrict 64-bit prefetchable bridge windows to 64-bit resources (Yinghai Lu)
     - Assign i82875p_edac PCI resources before adding device (Yinghai Lu)
 
   PCI device hotplug
     - Remove unnecessary "dev->bus" test (Bjorn Helgaas)
     - Use PCI_EXP_SLTCAP_PSN define (Bjorn Helgaas)
     - Fix rphahp endianess issues (Laurent Dufour)
     - Acknowledge spurious "cmd completed" event (Rajat Jain)
     - Allow hotplug service drivers to operate in polling mode (Rajat Jain)
     - Fix cpqphp possible NULL dereference (Rickard Strandqvist)
 
   MSI
     - Replace pci_enable_msi_block() by pci_enable_msi_exact() (Alexander Gordeev)
     - Replace pci_enable_msix() by pci_enable_msix_exact() (Alexander Gordeev)
     - Simplify populate_msi_sysfs() (Jan Beulich)
 
   Virtualization
     - Add Intel Patsburg (X79) root port ACS quirk (Alex Williamson)
     - Mark RTL8110SC INTx masking as broken (Alex Williamson)
 
   Generic host bridge driver
     - Add generic PCI host controller driver (Will Deacon)
 
   Freescale i.MX6
     - Use new clock names (Lucas Stach)
     - Drop old IRQ mapping (Lucas Stach)
     - Remove optional (and unused) IRQs (Lucas Stach)
     - Add support for MSI (Lucas Stach)
     - Fix imx6_add_pcie_port() section mismatch warning (Sachin Kamat)
 
   Renesas R-Car
     - Add gen2 device tree support (Ben Dooks)
     - Use new OF interrupt mapping when possible (Lucas Stach)
     - Add PCIe driver (Phil Edworthy)
     - Add PCIe MSI support (Phil Edworthy)
     - Add PCIe device tree bindings (Phil Edworthy)
 
   Samsung Exynos
     - Remove unnecessary OOM messages (Jingoo Han)
     - Fix add_pcie_port() section mismatch warning (Sachin Kamat)
 
   Synopsys DesignWare
     - Make MSI ISR shared IRQ aware (Lucas Stach)
 
   Miscellaneous
     - Check for broken config space aliasing (Alex Williamson)
     - Update email address (Ben Hutchings)
     - Fix Broadcom CNB20LE unintended sign extension (Bjorn Helgaas)
     - Fix incorrect vgaarb conditional in WARN_ON() (Bjorn Helgaas)
     - Remove unnecessary __ref annotations (Bjorn Helgaas)
     - Add arch/x86/kernel/quirks.c to MAINTAINERS PCI file patterns (Bjorn Helgaas)
     - Fix use of uninitialized MPS value (Bjorn Helgaas)
     - Tidy x86/gart messages (Bjorn Helgaas)
     - Fix return value from pci_user_{read,write}_config_*() (Gavin Shan)
     - Turn pcibios_penalize_isa_irq() into a weak function (Hanjun Guo)
     - Remove unused serial device IDs (Jean Delvare)
     - Use designated initialization in PCI_VDEVICE (Mark Rustad)
     - Fix powerpc NULL dereference in pci_root_buses traversal (Mike Qiu)
     - Configure MPS on ARM (Murali Karicheri)
     - Remove unnecessary includes of <linux/init.h> (Paul Gortmaker)
     - Move Open Firmware devspec attribute to PCI common code (Sebastian Ott)
     - Use pdev->dev.groups for attribute creation on s390 (Sebastian Ott)
     - Remove pcibios_add_platform_entries() (Sebastian Ott)
     - Add new ID for Intel GPU "spurious interrupt" quirk (Thomas Jarosch)
     - Rename pci_is_bridge() to pci_has_subordinate() (Yijing Wang)
     - Add and use new pci_is_bridge() interface (Yijing Wang)
     - Make pci_bus_add_device() void (Yijing Wang)
 
   DMA API
     - Clarify physical/bus address distinction in docs (Bjorn Helgaas)
     - Fix typos in docs (Emilio López)
     - Update dma_pool_create ()and dma_pool_alloc() descriptions (Gioh Kim)
     - Change dma_declare_coherent_memory() CPU address to phys_addr_t (Bjorn Helgaas)
     - Pass GAPSPCI_DMA_BASE CPU & bus address to dma_declare_coherent_memory() (Bjorn Helgaas)
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Merge tag 'pci-v3.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci into next

Pull PCI changes from Bjorn Helgaas:
 "Enumeration
    - Notify driver before and after device reset (Keith Busch)
    - Use reset notification in NVMe (Keith Busch)

  NUMA
    - Warn if we have to guess host bridge node information (Myron Stowe)
    - Work around AMD Fam15h BIOSes that fail to provide _PXM (Suravee
      Suthikulpanit)
    - Clean up and mark early_root_info_init() as deprecated (Suravee
      Suthikulpanit)

  Driver binding
    - Add "driver_override" for force specific binding (Alex Williamson)
    - Fail "new_id" addition for devices we already know about (Bandan
      Das)

  Resource management
    - Support BAR sizes up to 8GB (Nikhil Rao, Alan Cox)
    - Don't move IORESOURCE_PCI_FIXED resources (Bjorn Helgaas)
    - Mark SBx00 HPET BAR as IORESOURCE_PCI_FIXED (Bjorn Helgaas)
    - Fail safely if we can't handle BARs larger than 4GB (Bjorn Helgaas)
    - Reject BAR above 4GB if dma_addr_t is too small (Bjorn Helgaas)
    - Don't convert BAR address to resource if dma_addr_t is too small
      (Bjorn Helgaas)
    - Don't set BAR to zero if dma_addr_t is too small (Bjorn Helgaas)
    - Don't print anything while decoding is disabled (Bjorn Helgaas)
    - Don't add disabled subtractive decode bus resources (Bjorn Helgaas)
    - Add resource allocation comments (Bjorn Helgaas)
    - Restrict 64-bit prefetchable bridge windows to 64-bit resources
      (Yinghai Lu)
    - Assign i82875p_edac PCI resources before adding device (Yinghai Lu)

  PCI device hotplug
    - Remove unnecessary "dev->bus" test (Bjorn Helgaas)
    - Use PCI_EXP_SLTCAP_PSN define (Bjorn Helgaas)
    - Fix rphahp endianess issues (Laurent Dufour)
    - Acknowledge spurious "cmd completed" event (Rajat Jain)
    - Allow hotplug service drivers to operate in polling mode (Rajat Jain)
    - Fix cpqphp possible NULL dereference (Rickard Strandqvist)

  MSI
    - Replace pci_enable_msi_block() by pci_enable_msi_exact()
      (Alexander Gordeev)
    - Replace pci_enable_msix() by pci_enable_msix_exact() (Alexander Gordeev)
    - Simplify populate_msi_sysfs() (Jan Beulich)

  Virtualization
    - Add Intel Patsburg (X79) root port ACS quirk (Alex Williamson)
    - Mark RTL8110SC INTx masking as broken (Alex Williamson)

  Generic host bridge driver
    - Add generic PCI host controller driver (Will Deacon)

  Freescale i.MX6
    - Use new clock names (Lucas Stach)
    - Drop old IRQ mapping (Lucas Stach)
    - Remove optional (and unused) IRQs (Lucas Stach)
    - Add support for MSI (Lucas Stach)
    - Fix imx6_add_pcie_port() section mismatch warning (Sachin Kamat)

  Renesas R-Car
    - Add gen2 device tree support (Ben Dooks)
    - Use new OF interrupt mapping when possible (Lucas Stach)
    - Add PCIe driver (Phil Edworthy)
    - Add PCIe MSI support (Phil Edworthy)
    - Add PCIe device tree bindings (Phil Edworthy)

  Samsung Exynos
    - Remove unnecessary OOM messages (Jingoo Han)
    - Fix add_pcie_port() section mismatch warning (Sachin Kamat)

  Synopsys DesignWare
    - Make MSI ISR shared IRQ aware (Lucas Stach)

  Miscellaneous
    - Check for broken config space aliasing (Alex Williamson)
    - Update email address (Ben Hutchings)
    - Fix Broadcom CNB20LE unintended sign extension (Bjorn Helgaas)
    - Fix incorrect vgaarb conditional in WARN_ON() (Bjorn Helgaas)
    - Remove unnecessary __ref annotations (Bjorn Helgaas)
    - Add arch/x86/kernel/quirks.c to MAINTAINERS PCI file patterns
      (Bjorn Helgaas)
    - Fix use of uninitialized MPS value (Bjorn Helgaas)
    - Tidy x86/gart messages (Bjorn Helgaas)
    - Fix return value from pci_user_{read,write}_config_*() (Gavin Shan)
    - Turn pcibios_penalize_isa_irq() into a weak function (Hanjun Guo)
    - Remove unused serial device IDs (Jean Delvare)
    - Use designated initialization in PCI_VDEVICE (Mark Rustad)
    - Fix powerpc NULL dereference in pci_root_buses traversal (Mike Qiu)
    - Configure MPS on ARM (Murali Karicheri)
    - Remove unnecessary includes of <linux/init.h> (Paul Gortmaker)
    - Move Open Firmware devspec attribute to PCI common code (Sebastian Ott)
    - Use pdev->dev.groups for attribute creation on s390 (Sebastian Ott)
    - Remove pcibios_add_platform_entries() (Sebastian Ott)
    - Add new ID for Intel GPU "spurious interrupt" quirk (Thomas Jarosch)
    - Rename pci_is_bridge() to pci_has_subordinate() (Yijing Wang)
    - Add and use new pci_is_bridge() interface (Yijing Wang)
    - Make pci_bus_add_device() void (Yijing Wang)

  DMA API
    - Clarify physical/bus address distinction in docs (Bjorn Helgaas)
    - Fix typos in docs (Emilio López)
    - Update dma_pool_create ()and dma_pool_alloc() descriptions (Gioh Kim)
    - Change dma_declare_coherent_memory() CPU address to phys_addr_t
      (Bjorn Helgaas)
    - Pass GAPSPCI_DMA_BASE CPU & bus address to dma_declare_coherent_memory()
      (Bjorn Helgaas)"

* tag 'pci-v3.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (92 commits)
  MAINTAINERS: Add generic PCI host controller driver
  PCI: generic: Add generic PCI host controller driver
  PCI: imx6: Add support for MSI
  PCI: designware: Make MSI ISR shared IRQ aware
  PCI: imx6: Remove optional (and unused) IRQs
  PCI: imx6: Drop old IRQ mapping
  PCI: imx6: Use new clock names
  i82875p_edac: Assign PCI resources before adding device
  ARM/PCI: Call pcie_bus_configure_settings() to set MPS
  PCI: imx6: Fix imx6_add_pcie_port() section mismatch warning
  PCI: Make pci_bus_add_device() void
  PCI: exynos: Fix add_pcie_port() section mismatch warning
  PCI: Introduce new device binding path using pci_dev.driver_override
  PCI: rcar: Add gen2 device tree support
  PCI: cpqphp: Fix possible null pointer dereference
  PCI: rcar: Add R-Car PCIe device tree bindings
  PCI: rcar: Add MSI support for PCIe
  PCI: rcar: Add Renesas R-Car PCIe driver
  PCI: Fix return value from pci_user_{read,write}_config_*()
  PCI: exynos: Remove unnecessary OOM messages
  ...
2014-06-02 12:15:19 -07:00
Bjorn Helgaas 617b4157a5 Merge branches 'pci/host-exynos', 'pci/host-imx6', 'pci/resource' and 'pci/misc' into next
* pci/host-exynos:
  PCI: exynos: Fix add_pcie_port() section mismatch warning

* pci/host-imx6:
  PCI: imx6: Add support for MSI
  PCI: designware: Make MSI ISR shared IRQ aware
  PCI: imx6: Remove optional (and unused) IRQs
  PCI: imx6: Drop old IRQ mapping
  PCI: imx6: Use new clock names
  PCI: imx6: Fix imx6_add_pcie_port() section mismatch warning

* pci/resource:
  i82875p_edac: Assign PCI resources before adding device

* pci/misc:
  ARM/PCI: Call pcie_bus_configure_settings() to set MPS
  PCI: Make pci_bus_add_device() void

Conflicts:
	drivers/edac/i82875p_edac.c
2014-05-30 11:41:17 -06:00
Yinghai Lu 06b00514b7 i82875p_edac: Assign PCI resources before adding device
Assign PCI resources before pci_bus_add_device().  The resources must be
assigned before a driver can claim the device.

[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-05-30 10:56:46 -06:00
Yijing Wang c893d133ea PCI: Make pci_bus_add_device() void
pci_bus_add_device() always returns 0, so there's no point in returning
anything at all.  Make it a void function and remove the tests of the
return value from the callers.

[bhelgaas: changelog, remove unused "err" from i82875p_setup_overfl_dev()]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-05-30 09:34:27 -06:00
Loc Ho aa2064d7dd EDAC: Fix MC scrub mode comparsion bug for correctable errors
The MC structure field scrub_mode is of integer type - not bit field.
Use it accordingly.

Signed-off-by: Loc Ho <lho@apm.com>
Link: http://lkml.kernel.org/r/1399590199-12256-2-git-send-email-lho@apm.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-05-09 09:35:04 +02:00
Borislav Petkov c5c0903b2c EDAC, MCE, AMD: Remove leftover unused mask
295d8cda26 ("EDAC, MCE, AMD: Drop local coreid reporting") removed the
code snippet which used that mask but forgot to drop the mask itself. Do
that now.

Signed-off-by: Borislav Petkov <bp@suse.de>
2014-05-08 20:37:07 +02:00
Linus Torvalds 3c83e61e67 Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
 "The main set of series of patches for media subsystem, including:
   - document RC sysfs class
   - added an API to setup scancode to allow waking up systems using the
     Remote Controller
   - add API for SDR devices.  Drivers are still on staging
   - some API improvements for getting EDID data from media
     inputs/outputs
   - new DVB frontend driver for drx-j (ATSC)
   - one driver (it913x/it9137) got removed, in favor of an improvement
     on another driver (af9035)
   - added a skeleton V4L2 PCI driver at documentation
   - added a dual flash driver (lm3646)
   - added a new IR driver (img-ir)
   - added an IR scancode decoder for the Sharp protocol
   - some improvements at the usbtv driver, to allow its core to be
     reused.
   - added a new SDR driver (rtl2832u_sdr)
   - added a new tuner driver (msi001)
   - several improvements at em28xx driver to fix PM support, device
     removal and to split the V4L2 specific bits into a separate
     sub-driver
   - one driver got converted to videobuf2 (s2255drv)
   - the e4000 tuner driver now follows an improved binding model
   - some fixes at V4L2 compat32 code
   - several fixes and enhancements at videobuf2 code
   - some cleanups at V4L2 API documentation
   - usual driver enhancements, new board additions and misc fixups"

[ NOTE! This merge effective drops commit 4329b93b28 ("of: Reduce
  indentation in of_graph_get_next_endpoint").

  The of_graph_get_next_endpoint() function was moved and renamed by
  commit fd9fdb78a9 ("[media] of: move graph helpers from
  drivers/media/v4l2-core to drivers/of").  It was originally called
  v4l2_of_get_next_endpoint() and lived in the file
  drivers/media/v4l2-core/v4l2-of.c.

  In that original location, it was then fixed to support empty port
  nodes by commit b9db140c1e ("[media] v4l: of: Support empty port
  nodes"), and that commit clashes badly with the dropped "Reduce
  intendation" commit.  I had to choose one or the other, and decided
  that the "Support empty port nodes" commit was more important ]

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (426 commits)
  [media] em28xx-dvb: fix PCTV 461e tuner I2C binding
  Revert "[media] em28xx-dvb: fix PCTV 461e tuner I2C binding"
  [media] em28xx: fix PCTV 290e LNA oops
  [media] em28xx-dvb: fix PCTV 461e tuner I2C binding
  [media] m88ds3103: fix bug on .set_tone()
  [media] saa7134: fix WARN_ON during resume
  [media] v4l2-dv-timings: add module name, description, license
  [media] videodev2.h: add parenthesis around macro arguments
  [media] saa6752hs: depends on CRC32
  [media] si4713: fix Kconfig dependencies
  [media] Sensoray 2255 uses videobuf2
  [media] adv7180: free an interrupt on failure paths in init_device()
  [media] e4000: make VIDEO_V4L2 dependency optional
  [media] af9033: Don't export functions for the hardware filter
  [media] af9035: use af9033 PID filters
  [media] af9033: implement PID filter
  [media] rtl2832_sdr: do not use dynamic stack allocation
  [media] e4000: fix 32-bit build error
  [media] em28xx-audio: make sure audio is unmuted on open()
  [media] DocBook media: v4l2_format_sdr was renamed to v4l2_sdr_format
  ...
2014-04-04 09:50:07 -07:00
Linus Torvalds 4a4389abdd Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull sb_edac patches from Mauro Carvalho Chehab:
 "A couple sb_edac driver improvements, cleaning a little bit the amount
  of data sent to dmesg, and fixing one error message"

* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac:
  sb_edac: mark MCE messages as KERN_DEBUG
  sb_edac: use "event" instead of "exception" when MC wasnt signaled
2014-04-03 17:07:17 -07:00
Linus Torvalds bdfc7cbdee Merge branch 'mips-for-linux-next' of git://git.linux-mips.org/pub/scm/ralf/upstream-sfr
Pull MIPS updates from Ralf Baechle:
 - Support for Imgtec's Aptiv family of MIPS cores.
 - Improved detection of BCM47xx configurations.
 - Fix hiberation for certain configurations.
 - Add support for the Chinese Loongson 3 CPU, a MIPS64 R2 core and
   systems.
 - Detection and support for the MIPS P5600 core.
 - A few more random fixes that didn't make 3.14.
 - Support for the EVA Extended Virtual Addressing
 - Switch Alchemy to the platform PATA driver
 - Complete unification of Alchemy support
 - Allow availability of I/O cache coherency to be runtime detected
 - Improvments to multiprocessing support for Imgtec platforms
 - A few microoptimizations
 - Cleanups of FPU support
 - Paul Gortmaker's fixes for the init stuff
 - Support for seccomp

* 'mips-for-linux-next' of git://git.linux-mips.org/pub/scm/ralf/upstream-sfr: (165 commits)
  MIPS: CPC: Use __raw_ memory access functions
  MIPS: CM: use __raw_ memory access functions
  MIPS: Fix warning when including smp-ops.h with CONFIG_SMP=n
  MIPS: Malta: GIC IPIs may be used without MT
  MIPS: smp-mt: Use common GIC IPI implementation
  MIPS: smp-cmp: Remove incorrect core number probe
  MIPS: Fix gigaton of warning building with microMIPS.
  MIPS: Fix core number detection for MT cores
  MIPS: MT: core_nvpes function to retrieve VPE count
  MIPS: Provide empty mips_mt_set_cpuoptions when CONFIG_MIPS_MT=n
  MIPS: Lasat: Replace del_timer by del_timer_sync
  MIPS: Malta: Setup PM I/O region on boot
  MIPS: Loongson: Add a Loongson-3 default config file
  MIPS: Loongson 3: Add CPU hotplug support
  MIPS: Loongson 3: Add Loongson-3 SMP support
  MIPS: Loongson: Add Loongson-3 Kconfig options
  MIPS: Loongson: Add swiotlb to support All-Memory DMA
  MIPS: Loongson 3: Add serial port support
  MIPS: Loongson 3: Add IRQ init and dispatch support
  MIPS: Loongson 3: Add HT-linked PCI support
  ...
2014-04-02 13:40:50 -07:00
Linus Torvalds 62ff577fa2 A bunch of EDAC updates all over the place:
* Support for new AMD models, along with more graceful fallback for
 unsupported hw.
 
 * Bunch of fixes from SUSE accumulated from bug reports
 
 * Misc other fixes and cleanups
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Merge tag 'edac_for_3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC updates from Borislav Petkov:
 "A bunch of EDAC updates all over the place:

   - Support for new AMD models, along with more graceful fallback for
     unsupported hw.

   - Bunch of fixes from SUSE accumulated from bug reports

   - Misc other fixes and cleanups"

* tag 'edac_for_3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  amd64_edac: Add support for newer F16h models
  i7core_edac: Drop unused variable
  i82875p_edac: Drop redundant call to pci_get_device()
  amd8111_edac: Fix leaks in probe error paths
  e752x_edac: Drop pvt->bridge_ck
  MCE, AMD: Fix decoding module loading on unsupported hw
  i5100_edac: Remove an unneeded condition in i5100_init_csrows()
  sb_edac: Degrade log level for device registration
  amd64_edac: Fix logic to determine channel for F15 M30h processors
  edac/85xx: Remove deprecated IRQF_DISABLED
  i3200_edac: Add a missing pci_disable_device() on the exit path
  i5400_edac: Disable device when unloading module
  e752x_edac: Simplify call to pci_get_device()
2014-04-01 13:54:00 -07:00
Daniel Walker 1bc021e815 EDAC: Octeon: Add error injection support
This adds an ad-hoc error injection method. Octeon II doesn't have
hardware support for injection, so this simulates it.

Signed-off-by: Daniel Walker <dwalker@fifo99.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: linux-edac@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5873/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-31 18:17:12 +02:00
Daniel Walker 5331de0570 EDAC: Octeon: Fix lack of opstate_init
If the opstate_init() isn't called the driver won't start properly.

I just added it in what appears to be an appropriate place.

Signed-off-by: Daniel Walker <dwalker@fifo99.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: linux-edac@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5872/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-31 18:17:12 +02:00
Aristeu Rozanski 49856dc973 sb_edac: mark MCE messages as KERN_DEBUG
Since the driver is decoding the MCE, it's useless to have these
messages printed unless you're debugging a problem in the driver.

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-03-13 09:52:09 -03:00
Aristeu Rozanski cf40f80cbe sb_edac: use "event" instead of "exception" when MC wasnt signaled
Corrected Errors are MC events, not exceptions and reporting as the
later might confuse users.

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-03-13 09:52:01 -03:00
Mauro Carvalho Chehab c897df0e2d Linux 3.14-rc5
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Merge tag 'v3.14-rc5' into patchwork

Linux 3.14-rc5

* tag 'v3.14-rc5': (1117 commits)
  Linux 3.14-rc5
  drm/vmwgfx: avoid null pointer dereference at failure paths
  drm/vmwgfx: Make sure backing mobs are cleared when allocated. Update driver date.
  drm/vmwgfx: Remove some unused surface formats
  MAINTAINERS: add maintainer entry for Armada DRM driver
  arm64: Fix !CONFIG_SMP kernel build
  arm64: mm: Add double logical invert to pte accessors
  dm cache: fix truncation bug when mapping I/O to >2TB fast device
  perf tools: Fix strict alias issue for find_first_bit
  powerpc/powernv: Fix indirect XSCOM unmangling
  powerpc/powernv: Fix opal_xscom_{read,write} prototype
  powerpc/powernv: Refactor PHB diag-data dump
  powerpc/powernv: Dump PHB diag-data immediately
  powerpc: Increase stack redzone for 64-bit userspace to 512 bytes
  powerpc/ftrace: bugfix for test_24bit_addr
  powerpc/crashdump : Fix page frame number check in copy_oldmem_page
  powerpc/le: Ensure that the 'stop-self' RTAS token is handled correctly
  kvm, vmx: Really fix lazy FPU on nested guest
  perf tools: fix BFD detection on opensuse
  drm/radeon: enable speaker allocation setup on dce3.2
  ...
2014-03-11 06:55:49 -03:00
Aravind Gopalakrishnan 85a8885bd0 amd64_edac: Add support for newer F16h models
Extend ECC decoding support for F16h M30h. Tested on F16h M30h with ECC
turned on using mce_amd_inj module and the patch works fine.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/1392913726-16961-1-git-send-email-Aravind.Gopalakrishnan@amd.com
Tested-by: Arindam Nath <Arindam.Nath@amd.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-27 18:03:16 +01:00
Jean Delvare f118920baf i7core_edac: Drop unused variable
Fix the following warning:

drivers/edac/i7core_edac.c: In function "core_mce_output_error":
drivers/edac/i7core_edac.c:1711:8: warning: variable "type" set but not used [-Wunused-but-set-variable]
  char *type, *optype, *err;
        ^
According to Mauro, type can just be dropped, as tp_event now maps if
the error is corrected, uncorrected non-fatal or uncorrected fatal
one.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Link: http://lkml.kernel.org/r/20140224171358.692d7e5a@endymion.delvare
Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-25 10:22:34 +01:00
Jean Delvare 5fdae41900 i82875p_edac: Drop redundant call to pci_get_device()
The first call to pci_get_device() in i82875p_probe1() is useless. The
result is immediately reset at the beginning of
i82875p_setup_overfl_dev(), which then issues the same
pci_get_device() call. Dropping the redundant call avoids a device
reference leak.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Link: http://lkml.kernel.org/r/20140224160316.60e55fb6@endymion.delvare
Cc: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-25 10:13:46 +01:00
Jean Delvare 5576fb8696 amd8111_edac: Fix leaks in probe error paths
Both probe error paths are incomplete and leak memory and device
references. Add the missing cleanups.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Link: http://lkml.kernel.org/r/20140224154534.5a3b797a@endymion.delvare
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-25 10:09:09 +01:00
Jean Delvare 0e089c1828 e752x_edac: Drop pvt->bridge_ck
pvt->bridge_ck always points to the same device as pvt->dev_d0f1, so
get rid of the former and only use the latter.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Tested-by: Aristeu Rozanski <aris@redhat.com>
Link: http://lkml.kernel.org/r/20140224151544.16ba28a0@endymion.delvare
Cc: Mark Gross <mark.gross@intel.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-25 10:01:30 +01:00
Jean Delvare 75135da0d6 i7300_edac: Fix device reference count
pci_get_device() decrements the reference count of "from" (last
argument) so when we break off the loop successfully we have only one
device reference - and we don't know which device we have. If we want
a reference to each device, we must take them explicitly and let
the pci_get_device() walk complete to avoid duplicate references.

This is serious, as over-putting device references will cause
the device to eventually disappear. Without this fix, the kernel
crashes after a few insmod/rmmod cycles.

Tested on an Intel S7000FC4UR system with a 7300 chipset.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Link: http://lkml.kernel.org/r/20140224111656.09bbb7ed@endymion.delvare
Cc: Mauro Carvalho Chehab <m.chehab@samsung.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: stable@vger.kernel.org
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-25 09:43:13 +01:00
Jean Delvare c0f5eeed0f i7core_edac: Fix PCI device reference count
The reference count changes done by pci_get_device can be a little
misleading when the usage diverges from the most common scheme. The
reference count of the device passed as the last parameter is always
decreased, even if the function returns no new device. So if we are
going to try alternative device IDs, we must manually increment the
device reference count before each retry. If we don't, we end up
decreasing the reference count, and after a few modprobe/rmmod cycles
the PCI devices will vanish.

In other words and as Alan put it: without this fix the EDAC code
corrupts the PCI device list.

This fixes kernel bug #50491:
https://bugzilla.kernel.org/show_bug.cgi?id=50491

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Link: http://lkml.kernel.org/r/20140224093927.7659dd9d@endymion.delvare
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Mauro Carvalho Chehab <m.chehab@samsung.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: stable@vger.kernel.org
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-25 08:54:45 +01:00
Borislav Petkov fd0f5ffff8 MCE, AMD: Fix decoding module loading on unsupported hw
We want to still be able to issue some error information on systems for
which there is no decoding support (think older distro kernels here,
for example). Therefore, we allow module registration but skip the
per-family bank-specific decoders and issue the general information
only, i.e.:

[   46.822828] [Hardware Error]: Error Status: Uncorrected, software containable error.
[   46.822846] [Hardware Error]: CPU:0 (15:30:0) MC0_STATUS[-|UE|-|-|-|-|-]: 0xa000000000010f0f
[   46.822858] [Hardware Error]: cache level: L3/GEN, mem/io: GEN, mem-tx: GEN, part-proc: GEN (timed out)

with the hope that it still contains helpful useful bits.

Suggested-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
Tested-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/1392659391-2411-1-git-send-email-Aravind.Gopalakrishnan@amd.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-24 10:25:47 +01:00
Dan Carpenter 9d6c7cbe30 i5100_edac: Remove an unneeded condition in i5100_init_csrows()
We checked that "npages" was not zero a couple lines earlier so we can
remove this and pull the code in one indent level.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: http://lkml.kernel.org/r/20140213111738.GB15549@elgon.mountain
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-20 11:52:58 +01:00
Jiang Liu ec5a0b3824 sb_edac: Degrade log level for device registration
On a system with four Intel processors, it generates too many messages
"EDAC sbridge: Seeking for: dev 1d.3 PCI ID xxxx". And it doesn't give
many useful information for normal users, so change log level from INFO
to DEBUG.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Link: http://lkml.kernel.org/r/1392613824-11230-1-git-send-email-jiang.liu@linux.intel.com
Acked-by: Aristeu Rozanski <aris@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-20 11:42:36 +01:00
Borislav Petkov cb6ef42e51 EDAC: Correct workqueue setup path
We're using edac_mc_workq_setup() both on the init path, when
we load an edac driver and when we change the polling period
(edac_mc_reset_delay_period) through /sys/.../edac_mc_poll_msec.

On that second path we don't need to init the workqueue which has been
initialized already.

Thanks to Tejun for workqueue insights.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1391457913-881-1-git-send-email-prarit@redhat.com
Cc: <stable@vger.kernel.org>
2014-02-14 10:40:47 +01:00
Borislav Petkov 9da21b1509 EDAC: Poll timeout cannot be zero, p2
Sanitize code even more to accept unsigned longs only and to not allow
polling intervals below 1 second as this is unnecessary and doesn't make
much sense anyway for polling errors.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1391457913-881-1-git-send-email-prarit@redhat.com
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: <stable@vger.kernel.org>
2014-02-14 10:40:29 +01:00
Prarit Bhargava 79040cad3f drivers/edac/edac_mc_sysfs.c: poll timeout cannot be zero
If you do

  echo 0 > /sys/module/edac_core/parameters/edac_mc_poll_msec

the following stack trace is output because the edac module is not
designed to poll with a timeout of zero.

  WARNING: CPU: 12 PID: 0 at lib/list_debug.c:33 __list_add+0xac/0xc0()
  list_add corruption. prev->next should be next (ffff8808291dd1b8), but was           (null). (prev=ffff8808286fe3f8).
  Modules linked in: sg nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill x86_pkg_temp_thermal coretemp kvm_intel kvm ixgbe e1000e crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt ptp sb_edac iTCO_vendor_support pps_core mdio ipmi_devintf edac_core ioatdma microcode shpchp lpc_ich pcspkr i2c_i801 dca mfd_core ipmi_si wmi ipmi_msghandler nfsd auth_rpcgss nfs_acl lockd sunrpc xfs libcrc32c sd_mod sr_mod cdrom crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt isci i2c_algo_bit drm_kms_helper ttm drm libsas ahci libahci scsi_transport_sas libata i2c_core dm_mirror dm_region_hash dm_log dm_mod
  CPU: 12 PID: 0 Comm: swapper/12 Not tainted 3.13.0+ #1
  Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013
  Call Trace:
   <IRQ>
    __list_add+0xac/0xc0
    __internal_add_timer+0xab/0x130
    internal_add_timer+0x17/0x40
    mod_timer_pinned+0xca/0x170
    intel_pstate_timer_func+0x28a/0x380
    call_timer_fn+0x36/0x100
    run_timer_softirq+0x1ff/0x2f0
    __do_softirq+0xf5/0x2e0
    irq_exit+0x10d/0x120
    smp_apic_timer_interrupt+0x45/0x60
    apic_timer_interrupt+0x6d/0x80
   <EOI>
    cpuidle_idle_call+0xb9/0x1f0
    arch_cpu_idle+0xe/0x30
    cpu_startup_entry+0x9e/0x240
    start_secondary+0x1e4/0x290

  kernel BUG at kernel/timer.c:1084!
  invalid opcode: 0000 [#1] SMP
  Modules linked in: sg nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill x86_pkg_temp_thermal coretemp kvm_intel kvm ixgbe e1000e crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt ptp sb_edac iTCO_vendor_support pps_core mdio ipmi_devintf edac_core ioatdma microcode shpchp lpc_ich pcspkr i2c_i801 dca mfd_core ipmi_si wmi ipmi_msghandler nfsd auth_rpcgss nfs_acl lockd sunrpc xfs libcrc32c sd_mod sr_mod cdrom crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt isci i2c_algo_bit drm_kms_helper ttm drm libsas ahci libahci scsi_transport_sas libata i2c_core dm_mirror dm_region_hash dm_log dm_mod
  CPU: 12 PID: 0 Comm: swapper/12 Tainted: G        W    3.13.0+ #1
  Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013
  Call Trace:
   <IRQ>
    run_timer_softirq+0x245/0x2f0
    __do_softirq+0xf5/0x2e0
    irq_exit+0x10d/0x120
    smp_apic_timer_interrupt+0x45/0x60
    apic_timer_interrupt+0x6d/0x80
   <EOI>
    cpuidle_idle_call+0xb9/0x1f0
    arch_cpu_idle+0xe/0x30
    cpu_startup_entry+0x9e/0x240
    start_secondary+0x1e4/0x290
  RIP   cascade+0x93/0xa0

  WARNING: CPU: 36 PID: 1154 at kernel/workqueue.c:1461 __queue_delayed_work+0xed/0x1a0()
  Modules linked in: sg nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill x86_pkg_temp_thermal coretemp kvm_intel kvm ixgbe e1000e crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt ptp sb_edac iTCO_vendor_support pps_core mdio ipmi_devintf edac_core ioatdma microcode shpchp lpc_ich pcspkr i2c_i801 dca mfd_core ipmi_si wmi ipmi_msghandler nfsd auth_rpcgss nfs_acl lockd sunrpc xfs libcrc32c sd_mod sr_mod cdrom crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt isci i2c_algo_bit drm_kms_helper ttm drm libsas ahci libahci scsi_transport_sas libata i2c_core dm_mirror dm_region_hash dm_log dm_mod
  CPU: 36 PID: 1154 Comm: kworker/u481:3 Tainted: G        W    3.13.0+ #1
  Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013
  Workqueue: edac-poller edac_mc_workq_function [edac_core]
  Call Trace:
    dump_stack+0x45/0x56
    warn_slowpath_common+0x7d/0xa0
    warn_slowpath_null+0x1a/0x20
    __queue_delayed_work+0xed/0x1a0
    queue_delayed_work_on+0x27/0x50
    edac_mc_workq_function+0x72/0xa0 [edac_core]
    process_one_work+0x17b/0x460
    worker_thread+0x11b/0x400
    kthread+0xd2/0xf0
    ret_from_fork+0x7c/0xb0

This patch adds a range check in the edac_mc_poll_msec code to check for 0.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-02-10 16:01:41 -08:00
Aravind Gopalakrishnan 9d0e8d8348 amd64_edac: Fix logic to determine channel for F15 M30h processors
Update current channel selection logic to include F15h, M30h memory
controllers.

Refer F15 M30h BKDG D18F2x110[7:6] (DRAM Controller Select Low)
(Link:http://support.amd.com/TechDocs/49125_15h_Models_30h-3Fh_BKDG.pdf)

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/1390338216-3873-1-git-send-email-Aravind.Gopalakrishnan@amd.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-07 15:01:19 +01:00
Johannes Thumshirn e245e3b25f edac/85xx: Remove deprecated IRQF_DISABLED
Remove IRQF_DISABLED as it is a NOOP.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de>
Link: http://lkml.kernel.org/r/1390293747-11185-1-git-send-email-johannes.thumshirn@men.de
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-07 14:48:07 +01:00
Hitoshi Mitake b90fe1568f i3200_edac: Add a missing pci_disable_device() on the exit path
Currently, i3200_edac.c forgets to call pci_disable_device() during a
process of disabling device. This patch adds that call.

The problem was detected by Huqiu Liu.

Reported-by: Huqiu Liu <liuhq11@mails.tsinghua.edu.cn>
Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>
Link: http://lkml.kernel.org/r/1389587178-10167-1-git-send-email-mitake.hitoshi@gmail.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-07 11:34:55 +01:00
Aristeu Rozanski c2e650c49a i5400_edac: Disable device when unloading module
This was found by Huqiu Liu using a static analysis.

Reported-by: Huqiu Liu <liuhq11@mails.tsinghua.edu.cn>
Signed-off-by: Aristeu Rozanski <aris@redhat.com>
Link: http://lkml.kernel.org/r/20140116162021.GY15716@redhat.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-07 11:28:49 +01:00
Mauro Carvalho Chehab 37e59f876b [media, edac] Change my email address
There are several left overs with my old email address.
Remove their occurrences and add myself at CREDITS, to
allow people to be able to reach me on my new addresses.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-02-07 08:03:07 -02:00
Jean Delvare 2edbf56997 e752x_edac: Simplify call to pci_get_device()
The last parameter, pvt->bridge_ck, is always NULL as far as I can
see, so just use that.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Aristeu Rozanski <aris@redhat.com>
Link: http://lkml.kernel.org/r/20140130091101.22f2b550@endymion.delvare
Cc: Mark Gross <mark.gross@intel.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-03 19:03:35 +01:00
Linus Torvalds fab5669d55 Merge branch 'x86-ras-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 RAS changes from Ingo Molnar:

 - SCI reporting for other error types not only correctable ones

 - GHES cleanups

 - Add the functionality to override error reporting agents as some
   machines are sporting a new extended error logging capability which,
   if done properly in the BIOS, makes a corresponding EDAC module
   redundant

 - PCIe AER tracepoint severity levels fix

 - Error path correction for the mce device init

 - MCE timer fix

 - Add more flexibility to the error injection (EINJ) debugfs interface

* 'x86-ras-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, mce: Fix mce_start_timer semantics
  ACPI, APEI, GHES: Cleanup ghes memory error handling
  ACPI, APEI: Cleanup alignment-aware accesses
  ACPI, APEI, GHES: Do not report only correctable errors with SCI
  ACPI, APEI, EINJ: Changes to the ACPI/APEI/EINJ debugfs interface
  ACPI, eMCA: Combine eMCA/EDAC event reporting priority
  EDAC, sb_edac: Modify H/W event reporting policy
  EDAC: Add an edac_report parameter to EDAC
  PCI, AER: Fix severity usage in aer trace event
  x86, mce: Call put_device on device_register failure
2014-01-20 12:10:27 -08:00
Linus Torvalds 09854dde94 * mpc85xx PCIe error interrupt support
* misc small enhancements/fixes all over the place.
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Merge tag 'edac_for_3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC updates from Borislav Petkov:
 - mpc85xx PCIe error interrupt support
 - misc small enhancements/fixes all over the place.

* tag 'edac_for_3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC: Don't try to cancel workqueue when it's never setup
  e752x_edac: Fix pci_dev usage count
  sb_edac: Mark get_mci_for_node_id as static
  EDAC: Mark edac_create_debug_nodes as static
  amd64_edac: Remove "amd64" prefix from static functions
  amd64_edac: Simplify code around decode_bus_error
  amd64_edac: Mark amd64_decode_bus_error as static
  EDAC: Remove DEFINE_PCI_DEVICE_TABLE macro
  amd64_edac: Fix condition to verify max channels allowed for F15 M30h
  edac/85xx: Add PCIe error interrupt edac support
2014-01-20 09:26:15 -08:00
Stephen Boyd 881f0fcef9 EDAC: Don't try to cancel workqueue when it's never setup
We only setup a workqueue for edac devices that use the polling
method. We still try to cancel the workqueue if an edac_device
uses the irq method though. This causes a warning from debug
objects when we remove an edac device:

WARNING: CPU: 0 PID: 56 at lib/debugobjects.c:260 debug_print_object+0x98/0xc0()
ODEBUG: assert_init not available (active state 0) object type: timer_list hint: stub_timer+0x0/0x28
Modules linked in: krait_edac(-)
CPU: 0 PID: 56 Comm: rmmod Not tainted 3.12.0-rc2-00035-g15292a0 #69
(unwind_backtrace+0x0/0x144)
(show_stack+0x20/0x24)
(dump_stack+0x74/0xb4)
(warn_slowpath_common+0x78/0x9c)
(warn_slowpath_fmt+0x40/0x48)
(debug_print_object+0x98/0xc0)
(debug_object_assert_init+0xdc/0xec)
(del_timer+0x24/0x7c)
(try_to_grab_pending+0xc0/0x1b0)
(cancel_delayed_work+0x2c/0xa0)
(edac_device_workq_teardown+0x1c/0x38)
(edac_device_del_device+0xb8/0xe4)
(krait_edac_remove+0x50/0x70 [krait_edac])
(platform_drv_remove+0x24/0x28)
(__device_release_driver+0x68/0xc0)
(driver_detach+0xc4/0xc8)
(bus_remove_driver+0xac/0x114)
(driver_unregister+0x38/0x58)
(platform_driver_unregister+0x1c/0x20)
(krait_edac_driver_exit+0x14/0x1c [krait_edac])
(SyS_delete_module+0x178/0x2b4)

Fix it by skipping the workqueue teardown for such devices.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Link: http://lkml.kernel.org/r/1388434457-4194-2-git-send-email-sboyd@codeaurora.org
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-01-10 15:57:36 +01:00
Aristeu Rozanski 90ed4988b8 e752x_edac: Fix pci_dev usage count
In case the device 0, function 1 is not found using pci_get_device(),
pci_scan_single_device() will be used but, differently than
pci_get_device(), it allocates a pci_dev but doesn't does bump the usage
count on the pci_dev and after few module removals and loads the pci_dev
will be freed.

Signed-off-by: Aristeu Rozanski <aris@redhat.com>
Reviewed-by: mark gross <mark.gross@intel.com>
Link: http://lkml.kernel.org/r/20131205153755.GL4545@redhat.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-21 13:26:57 +01:00
Ingo Molnar 014952270e * Add the functionality to override error reporting agents as some
machines are sporting a new extended error logging capability which, if
 done properly in the BIOS, makes a corresponding EDAC module redundant,
 from Gong Chen.
 
 * PCIe AER tracepoint severity levels fix, from Rui Wang.
 
 * Error path correction for the mce device init, from Levente Kurusa.
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Merge tag 'ras_for_3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp into x86/ras

Pull RAS updates from Borislav Petkov:

  * Add the functionality to override error reporting agents as some
  machines are sporting a new extended error logging capability which, if
  done properly in the BIOS, makes a corresponding EDAC module redundant,
  from Gong Chen.

  * PCIe AER tracepoint severity levels fix, from Rui Wang.

  * Error path correction for the mce device init, from Levente Kurusa.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-12-16 14:33:17 +01:00
Rashika Kheria 8112c0cdf7 sb_edac: Mark get_mci_for_node_id as static
This patch marks the function get_mci_for_node_id() as static because it
is not used outside of sb_edac.c.

Thus, it also eliminates the following warning:
drivers/edac/sb_edac.c:918:22: warning: no previous prototype for ‘get_mci_for_node_id’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Link: http://lkml.kernel.org/r/0441f508186fc4eeabc8e9c3e4dde013d99405d4.1387029387.git.rashika.kheria@gmail.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-15 18:02:13 +01:00
Rashika Kheria 95285933d0 EDAC: Mark edac_create_debug_nodes as static
This patch marks the function edac_create_debug_nodes() as static
because it is not used outside of edac_mc_sysfs.c.

Thus, it also eliminates the following warning:
drivers/edac/edac_mc_sysfs.c:917:5: warning: no previous prototype for ‘edac_create_debug_nodes’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Link: http://lkml.kernel.org/r/a1c863b08c0d6f67d03280cf908c771bf26a3239.1387029387.git.rashika.kheria@gmail.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-15 17:59:59 +01:00
Borislav Petkov d1ea71cdc9 amd64_edac: Remove "amd64" prefix from static functions
No need for the namespace tagging there. Cleanup setup_pci_device while
at it.

Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-15 17:54:27 +01:00
Borislav Petkov df781d0386 amd64_edac: Simplify code around decode_bus_error
Drop wrapper function and prefixes.

Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-15 17:29:44 +01:00
Rashika Kheria 79db57cef9 amd64_edac: Mark amd64_decode_bus_error as static
This patch marks the function amd64_decode_bus_error() as static because
it is not used outside of amd64_edac.c.

It also eliminates the following warning:
drivers/edac/amd64_edac.c:2038:6: warning: no previous prototype for ‘amd64_decode_bus_error’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Link: http://lkml.kernel.org/r/7cddbd4c69ed493f183383e98853181aaf75b26b.1387029387.git.rashika.kheria@gmail.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-15 17:16:59 +01:00
Chen, Gong fd52103966 EDAC, sb_edac: Modify H/W event reporting policy
Newer Intel platforms support more than one method to report H/W event.
On this kind of platform, H/W event report can adopt new method and
traditional EDAC method should be disabled. Moreover, if EDAC event
report method is set to *force*, it means event must be reported via
EDAC interface. IOW, it overrides the default event report policy.

Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1386310630-12529-3-git-send-email-gong.chen@linux.intel.com
[ Boris: massage commit and error messages ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-11 18:19:25 +01:00
Chen, Gong c700f013ad EDAC: Add an edac_report parameter to EDAC
This new parameter is used to control how to report HW error reporting,
especially for newer Intel platform, like Ivybridge-EX, which contains
an enhanced error decoding functionality in the firmware, i.e. eMCA.

Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1386310630-12529-2-git-send-email-gong.chen@linux.intel.com
[ Boris: massage commit message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-11 18:06:47 +01:00
Jingoo Han ba935f4097 EDAC: Remove DEFINE_PCI_DEVICE_TABLE macro
Currently, there is no other bus that has something like this macro for
their device ids. Thus, DEFINE_PCI_DEVICE_TABLE macro should be removed.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Link: http://lkml.kernel.org/r/001c01ceefb3$5724d860$056e8920$%han@samsung.com
[ Boris: swap commit message with better one. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-06 10:23:41 +01:00
Aravind Gopalakrishnan 7f3f5240ce amd64_edac: Fix condition to verify max channels allowed for F15 M30h
The value returned from 'f15_m30h_determine_channel' will
always be 0x3 max. The condition

	(channel > 4 || channel < 0)

works as hardware never returns a value of 4, but
it leads to static checker analysis errors like
http://marc.info/?l=linux-edac&m=138607615131951&w=2.

Fix that.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/20131203130857.GA32170@elgon.mountain
[ Boris: massage commit message a bit. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-06 10:04:17 +01:00
Aristeu Rozanski bd4b968362 sb_edac: Shut up compiler warning when EDAC_DEBUG is enabled
Fix this:

In file included from drivers/edac/sb_edac.c:27:0:
drivers/edac/sb_edac.c: In function ‘sbridge_mce_output_error’:
drivers/edac/edac_core.h:50:8: warning: ‘limit’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  printk(level "EDAC " prefix ": " fmt, ##arg)
        ^
drivers/edac/sb_edac.c:948:25: note: ‘limit’ was declared here
  u64   ch_addr, offset, limit, prv = 0;

Limit can be initialized to 0. The only way limit wouldn't be
initialized is if there are no DIMMs present (which would be a bug of
course) and it'd fail on the next test.

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Link: http://lkml.kernel.org/r/20131121122021.GD26009@pd.tnic
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-11-30 12:26:36 +01:00
Chunhe Lan c92132f598 edac/85xx: Add PCIe error interrupt edac support
Add pcie error interrupt edac support for mpc85xx, p3041, p4080, and
p5020. The mpc85xx uses the legacy interrupt report mechanism - the
error interrupts are reported directly to mpic. While the p3041/
p4080/p5020 attaches the most of error interrupts to interrupt zero. And
report error interrupts to mpic via interrupt 0.

This patch can handle both of them.

Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com>
Link: http://lkml.kernel.org/r/1384712714-8826-3-git-send-email-morbidrsa@gmail.com
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Dave Jiang <dave.jiang@gmail.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-11-25 11:29:15 +01:00
Linus Torvalds cdd278db0e Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull EDAC driver updates from Mauro Carvalho Chehab:
 - sb_edac: add support for Ivy Bridge support
 - cell_edac: add a missing of_node_put() call

* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac:
  cell_edac: fix missing of_node_put
  sb_edac: add support for Ivy Bridge
  sb_edac: avoid decoding the same error multiple times
  sb_edac: rename mci_bind_devs()
  sb_edac: enable multiple PCI id tables to be used
  sb_edac: rework sad_pkg
  sb_edac: allow different interleave lists
  sb_edac: allow different dram_rule arrays
  sb_edac: isolate TOHM retrieval
  sb_edac: rename pci_br
  sb_edac: isolate TOLM retrieval
  sb_edac: make RANK_CFG_A value part of sbridge_info
2013-11-18 14:51:52 -08:00
Linus Torvalds 794e96e8ec EDAC updates for 3.13
Highlights:
 
 * Support for Calxeda ECX-2000 memory controller, from Robert Richter
 
 * Misc Calxeda Highbank drivers and EDAC core cleanups, from Rob Herring
   and Robert Richter
 
 * New maintainer for Freescale's MPC85xx EDAC driver: Johannes Thumshirn
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Merge tag 'edac_for_3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC updates from Borislav Petkov:
 "Following up on last week's discussion, here's my part of the EDAC
  pile, highlights in the signed tag.

  The last two patches have a date from just now because I've just
  applied them to the tree after Johannes sent them to me earlier.  I
  decided to forward them now because they're trivial.

  There's a third one for MPC85xx which adds PCIe error interrupt
  support but since it is not so trivial and hasn't seen any linux-next
  time, I'm deferring it to 3.14

  EDAC update highlights:
   - Support for Calxeda ECX-2000 memory controller, from Robert Richter
   - Misc Calxeda Highbank drivers and EDAC core cleanups, from Rob
     Herring and Robert Richter
   - New maintainer for Freescale's MPC85xx EDAC driver: Johannes
     Thumshirn"

* tag 'edac_for_3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  edac/85xx: Remove mpc85xx_pci_err_remove
  EDAC: Add edac-mpc85xx driver to MAINTAINERS
  edac, highbank: Moving error injection to sysfs for edac
  edac, highbank: Add MAINTAINERS entry
  edac: Unify reporting of device info for device, mc and pci
  edac, highbank: Improve and unify naming
  edac, highbank: Add Calxeda ECX-2000 support
  ARM: dts: calxeda: move memory-controller node out of ecx-common.dtsi
  edac, highbank: Fix interrupt setup of mem and l2 controller
2013-11-18 14:50:17 -08:00
Johannes Thumshirn 0f1741c74a edac/85xx: Remove mpc85xx_pci_err_remove
Remove mpc85xx_pci_err_remove(...) which is obsolete, this removes the
compiler warning which can be seen when building the driver either
statically or as a module.

Signed-off-by: Johannes Thumshirn <morbidrsa@gmail.com>
Link: https://lkml.kernel.org/r/20131112161901.GA15637@jtlinux
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-11-17 20:05:50 +01:00
Libo Chen 3e45588825 cell_edac: fix missing of_node_put
Decrease device_node refcount np after task completion.

Signed-off-by: Libo Chen <libo.chen@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 17:13:43 -02:00
Aristeu Rozanski 4d715a805b sb_edac: add support for Ivy Bridge
Since Ivy Bridge memory controller is very similar to Sandy Bridge, it's
wiser to modify sb_edac to support both instead of creating another
driver.

[m.chehab@samsung.com: Fix CodingStyle]
Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 17:13:22 -02:00
Aristeu Rozanski be3036d220 sb_edac: avoid decoding the same error multiple times
Whenever the extended error reporting is active, multiple MCEs will be
generated for the same event, which will lead to multiple repeated
errors to be reported. So check ADDRV and only decode the error if the
MCE address is valid.

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 16:50:03 -02:00
Aristeu Rozanski ea779b5a09 sb_edac: rename mci_bind_devs()
This is in preparation for Ivy Bridge support

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 16:49:47 -02:00
Aristeu Rozanski 5153a0f94c sb_edac: enable multiple PCI id tables to be used
This is needed to allow separated PCI id tables for Sandy Bridge and Ivy
Bridge.

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 16:49:27 -02:00
Aristeu Rozanski cc311991a7 sb_edac: rework sad_pkg
This is in preparation for Ivy Bridge support

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 16:49:04 -02:00
Aristeu Rozanski ef1ce51e7b sb_edac: allow different interleave lists
This is in preparation for Ivy Bridge support

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 16:48:42 -02:00
Aristeu Rozanski 464f1d829a sb_edac: allow different dram_rule arrays
This is in preparation for Ivy Bridge support

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 16:48:16 -02:00
Aristeu Rozanski 8fd6a43ac9 sb_edac: isolate TOHM retrieval
This is preparation of Ivy Bridge support.

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 16:43:17 -02:00
Aristeu Rozanski 5f8a1b8a7b sb_edac: rename pci_br
Ivy Bridge has more than one, so rename pci_br to pci_br0

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 16:43:06 -02:00
Aristeu Rozanski fb79a50926 sb_edac: isolate TOLM retrieval
This is in preparation for the Ivy Bridge support.

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 16:25:27 -02:00
Aristeu Rozanski ef1e8d03b1 sb_edac: make RANK_CFG_A value part of sbridge_info
This is in preparation of Ivy Bridge support.

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-14 16:20:37 -02:00
Linus Torvalds 10d0c9705e DeviceTree updates for 3.13. This is a bit larger pull request than
usual for this cycle with lots of clean-up.
 
 - Cross arch clean-up and consolidation of early DT scanning code.
 - Clean-up and removal of arch prom.h headers. Makes arch specific
   prom.h optional on all but Sparc.
 - Addition of interrupts-extended property for devices connected to
   multiple interrupt controllers.
 - Refactoring of DT interrupt parsing code in preparation for deferred
   probe of interrupts.
 - ARM cpu and cpu topology bindings documentation.
 - Various DT vendor binding documentation updates.
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Merge tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:
 "DeviceTree updates for 3.13.  This is a bit larger pull request than
  usual for this cycle with lots of clean-up.

   - Cross arch clean-up and consolidation of early DT scanning code.
   - Clean-up and removal of arch prom.h headers.  Makes arch specific
     prom.h optional on all but Sparc.
   - Addition of interrupts-extended property for devices connected to
     multiple interrupt controllers.
   - Refactoring of DT interrupt parsing code in preparation for
     deferred probe of interrupts.
   - ARM cpu and cpu topology bindings documentation.
   - Various DT vendor binding documentation updates"

* tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (82 commits)
  powerpc: add missing explicit OF includes for ppc
  dt/irq: add empty of_irq_count for !OF_IRQ
  dt: disable self-tests for !OF_IRQ
  of: irq: Fix interrupt-map entry matching
  MIPS: Netlogic: replace early_init_devtree() call
  of: Add Panasonic Corporation vendor prefix
  of: Add Chunghwa Picture Tubes Ltd. vendor prefix
  of: Add AU Optronics Corporation vendor prefix
  of/irq: Fix potential buffer overflow
  of/irq: Fix bug in interrupt parsing refactor.
  of: set dma_mask to point to coherent_dma_mask
  of: add vendor prefix for PHYTEC Messtechnik GmbH
  DT: sort vendor-prefixes.txt
  of: Add vendor prefix for Cadence
  of: Add empty for_each_available_child_of_node() macro definition
  arm/versatile: Fix versatile irq specifications.
  of/irq: create interrupts-extended property
  microblaze/pci: Drop PowerPC-ism from irq parsing
  of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code.
  of/irq: Use irq_of_parse_and_map()
  ...
2013-11-12 16:52:17 +09:00
Robert Richter 78cfbf0bbf edac, highbank: Moving error injection to sysfs for edac
Always have the error injection i/f available, even if there is no
debugfs or EDAC_DEBUG enabled. We need this for testing production
kernels and environments.

Thus, the entry moves from:

 /sys/kernel/debug/edac/mc0/inject_ctrl

to:

 /sys/devices/system/edac/mc/mc0/inject_ctrl

No other changes of the interface.

Signed-off-by: Robert Richter <robert.richter@linaro.org>
Signed-off-by: Robert Richter <rric@kernel.org>
2013-11-04 17:01:11 -06:00
Robert Richter 7270a6085a edac: Unify reporting of device info for device, mc and pci
Log messages slightly differ between edac subsystems. Unifying it.

Signed-off-by: Robert Richter <robert.richter@linaro.org>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Robert Richter <rric@kernel.org>
2013-11-04 17:01:09 -06:00
Robert Richter 41ec0e8da0 edac, highbank: Improve and unify naming
Assinging correct names of the 'hb_mc_edac' and 'hb_l2_edac' edac
modules for module, controller and device. Reported values for
Highbank in dmesg are now:

 EDAC MC0: Giving out device to module hb_mc_edac controller
 calxeda,hb-ddr-ctrl: DEV fff00000.memory-controller (INTERRUPT)

 EDAC DEVICE0: Giving out device to module hb_l2_edac controller
 calxeda,hb-sregs-l2-ecc: DEV fff3c200.sregs (INTERRUPT)

Signed-off-by: Robert Richter <robert.richter@linaro.org>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Robert Richter <rric@kernel.org>
2013-11-04 17:01:07 -06:00
Robert Richter 0ec8579e16 edac, highbank: Add Calxeda ECX-2000 support
Implement edac support for Calxeda ECX-2000.

The ECX-2000 memory controller is similar to Highbank but has
different register bases for error and interrupt registers. There is
an own device tree name "calxeda,ecx-2000-ddr-ctrl" for identification
and initialization of the ECX-2000 and its base addresses.

Signed-off-by: Robert Richter <robert.richter@linaro.org>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Robert Richter <rric@kernel.org>
2013-11-04 17:01:06 -06:00
Robert Richter a72b8859fd edac, highbank: Fix interrupt setup of mem and l2 controller
Register and enable interrupts after the edac registration. Otherwise
incomming ecc error interrupts lead to crashes during device setup.

Fixing this in drivers for mc and l2.

Signed-off-by: Robert Richter <robert.richter@linaro.org>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Cc: stable <stable@vger.kernel.org>     # 3.6+
Signed-off-by: Robert Richter <rric@kernel.org>
2013-11-04 15:43:18 -06:00
Chen, Gong 56507694de EDAC, GHES: Update ghes error record info
In latest UEFI spec(by now it's 2.4) there are some new
fields for memory error reporting. Add these new fields for
ghes_edac interface.

Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Cc: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2013-10-23 10:11:00 -07:00
Chen, Gong 147de14772 ACPI, APEI, CPER: Add UEFI 2.4 support for memory error
In latest UEFI spec(by now it is 2.4) memory error definition
for CPER (UEFI 2.4 Appendix N Common Platform Error Record)
adds some new fields. These fields help people to locate
memory error to an actual DIMM location.

Original-author: Tony Luck <tony.luck@intel.com>
Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2013-10-23 10:10:20 -07:00
Chen, Gong 10ef6b0dff bitops: Introduce a more generic BITMASK macro
GENMASK is used to create a contiguous bitmask([hi:lo]). It is
implemented twice in current kernel. One is in EDAC driver, the other
is in SiS/XGI FB driver. Move it to a more generic place for other
usage.

Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2013-10-21 15:12:01 -07:00
Rob Herring 5af5073004 drivers: clean-up prom.h implicit includes
Powerpc is a mess of implicit includes by prom.h. Add the necessary
explicit includes to drivers in preparation of prom.h cleanup.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
2013-10-09 20:04:04 -05:00
Linus Torvalds 4de9ad9bc0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
Pull Tile arch updates from Chris Metcalf:
 "These changes bring in a bunch of new functionality that has been
  maintained internally at Tilera over the last year, plus other stray
  bits of work that I've taken into the tile tree from other folks.

  The changes include some PCI root complex work, interrupt-driven
  console support, support for performing fast-path unaligned data
  fixups by kernel-based JIT code generation, CONFIG_PREEMPT support,
  vDSO support for gettimeofday(), a serial driver for the tilegx
  on-chip UART, KGDB support, more optimized string routines, support
  for ftrace and kprobes, improved ASLR, and many bug fixes.

  We also remove support for the old TILE64 chip, which is no longer
  buildable"

* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: (85 commits)
  tile: refresh tile defconfig files
  tile: rework <asm/cmpxchg.h>
  tile PCI RC: make default consistent DMA mask 32-bit
  tile: add null check for kzalloc in tile/kernel/setup.c
  tile: make __write_once a synonym for __read_mostly
  tile: remove support for TILE64
  tile: use asm-generic/bitops/builtin-*.h
  tile: eliminate no-op "noatomichash" boot argument
  tile: use standard tile_bundle_bits type in traps.c
  tile: simplify code referencing hypervisor API addresses
  tile: change <asm/system.h> to <asm/switch_to.h> in comments
  tile: mark pcibios_init() as __init
  tile: check for correct compiler earlier in asm-offsets.c
  tile: use standard 'generic-y' model for <asm/hw_irq.h>
  tile: use asm-generic version of <asm/local64.h>
  tile PCI RC: add comment about "PCI hole" problem
  tile: remove DEBUG_EXTRA_FLAGS kernel config option
  tile: add virt_to_kpte() API and clean up and document behavior
  tile: support FRAME_POINTER
  tile: support reporting Tilera hypervisor statistics
  ...
2013-09-06 11:14:33 -07:00
Aravind Gopalakrishnan 4fc06b3171 amd64_edac: Fix incorrect wraparounds
dct_base and dct_limit obtain 32 bit register values when they read
their respective pci config space registers. A left shift beyond 32 bits
will cause them to wrap around. Similar case for chan_addr as can be
seen from the bug report (link below). In the patch, we rectify this by
casting chan_addr to u64 and by comparing dct_base and dct_limit against
properly shifted sys_addr in order to compare the correct bits.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/20130819132302.GA12171@elgon.mountain
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-08-27 15:00:22 +02:00
Borislav Petkov 3f0aba4fc0 amd64_edac: Correct erratum 505 range
Basically we want to cover all 0x0-0xf models, i.e. Orochi and later.

Cc: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/20130819192321.GF4165@pd.tnic
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-08-27 14:25:08 +02:00
Ingo Molnar c874b6ba55 An amd64_edac fix for single channel configurations + trivial cleanups
courtesy of Jingoo Han.
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Merge tag 'edac_for_3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp into x86/ras

Pull RAS/EDAC updates from Boris Petkov:

 "An amd64_edac fix for single channel configurations + trivial cleanups
  courtesy of Jingoo Han."

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-08-15 10:07:20 +02:00
Jingoo Han 75a9551f2b cpc925_edac: Use proper array termination
The struct should be terminated by using empty braces in order to
fix the following sparse warning.

drivers/edac/cpc925_edac.c:792:10: warning: Using plain integer as NULL pointer

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
[ drop obvious comment ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-08-14 12:46:46 +02:00
Borislav Petkov a4b4bedce8 amd64_edac: Get rid of boot_cpu_data accesses
Now that we cache (family, model, stepping) locally, use them instead of
boot_cpu_data.

No functionality change.

Signed-off-by: Borislav Petkov <bp@suse.de>
2013-08-12 16:01:56 +02:00
Aravind Gopalakrishnan 18b94f66f9 amd64_edac: Add ECC decoding support for newer F15h models
On newer models, support has been included for upto 4 DCT's, however,
only DCT0 and DCT3 are currently configured (cf BKDG Section 2.10).
Also, the routing DRAM Requests algorithm is different for F15h M30h.
Thus it is cleaner to use a brand new function rather than adding quirks
to the more generic f1x_match_to_this_node(). Refer to "2.10.5 DRAM
Routing Requests" in the BKDG for further info.

Tested on Fam15h M30h with ECC turned on using mce_amd_inj facility and
verified to be functionally correct.

While at it, verify if erratum workarounds for E505 and E637 still hold.
From email conversations within AMD, the current status of the errata
is:

      * Erratum 505: fixed in model 0x1, stepping 0x1 and later.
      * Erratum 637: not fixed.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Cleanups, corrections ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-08-12 16:00:10 +02:00
Jingoo Han e0d391ab04 x38_edac: Make a local function static
Make a local function static in order to fix the following sparse
warning:

drivers/edac/x38_edac.c:252:14: warning: symbol 'x38_map_mchbar' was not declared. Should it be static?

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
[ Boris: Correct commit message ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-08-09 15:29:10 +02:00
Jingoo Han 166e9334e9 i3200_edac: Make a local function static
This local symbol is used only in this file.
Fix the following sparse warnings:

drivers/edac/i3200_edac.c:264:14: warning: symbol 'i3200_map_mchbar' was not declared. Should it be static?

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-08-09 15:23:02 +02:00
Borislav Petkov f0a56c4801 amd64_edac: Fix single-channel setups
It can happen that configurations are running in a single-channel mode
even with a dual-channel memory controller, by, say, putting the DIMMs
only on the one channel and leaving the other empty. This causes a
problem in init_csrows which implicitly assumes that when the second
channel is enabled, i.e. channel 1, the struct dimm hierarchy will be
present. Which is not.

So always allocate two channels unconditionally.

This provides for the nice side effect that the data structures are
initialized so some day, when memory hotplug is supported, it should
just work out of the box when all of a sudden a second channel appears.

Reported-and-tested-by: Roger Leigh <rleigh@debian.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-07-29 17:22:41 +02:00
Jingoo Han c542b53da9 EDAC: Replace strict_strtol() with kstrtol()
The usage of strict_strtol() is not preferred, because strict_strtol()
is obsolete. Thus, kstrtol() should be used.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-07-24 09:30:03 +02:00
Borislav Petkov 88d84ac973 EDAC: Fix lockdep splat
Fix the following:

BUG: key ffff88043bdd0330 not in .data!
------------[ cut here ]------------
WARNING: at kernel/lockdep.c:2987 lockdep_init_map+0x565/0x5a0()
DEBUG_LOCKS_WARN_ON(1)
Modules linked in: glue_helper sb_edac(+) edac_core snd acpi_cpufreq lrw gf128mul ablk_helper iTCO_wdt evdev i2c_i801 dcdbas button cryptd pcspkr iTCO_vendor_support usb_common lpc_ich mfd_core soundcore mperf processor microcode
CPU: 2 PID: 599 Comm: modprobe Not tainted 3.10.0 #1
Hardware name: Dell Inc. Precision T3600/0PTTT9, BIOS A08 01/24/2013
 0000000000000009 ffff880439a1d920 ffffffff8160a9a9 ffff880439a1d958
 ffffffff8103d9e0 ffff88043af4a510 ffffffff81a16e11 0000000000000000
 ffff88043bdd0330 0000000000000000 ffff880439a1d9b8 ffffffff8103dacc
Call Trace:
  dump_stack
  warn_slowpath_common
  warn_slowpath_fmt
  lockdep_init_map
  ? trace_hardirqs_on_caller
  ? trace_hardirqs_on
  debug_mutex_init
  __mutex_init
  bus_register
  edac_create_sysfs_mci_device
  edac_mc_add_mc
  sbridge_probe
  pci_device_probe
  driver_probe_device
  __driver_attach
  ? driver_probe_device
  bus_for_each_dev
  driver_attach
  bus_add_driver
  driver_register
  __pci_register_driver
  ? 0xffffffffa0010fff
  sbridge_init
  ? 0xffffffffa0010fff
  do_one_initcall
  load_module
  ? unset_module_init_ro_nx
  SyS_init_module
  tracesys
---[ end trace d24a70b0d3ddf733 ]---
EDAC MC0: Giving out device to 'sbridge_edac.c' 'Sandy Bridge Socket#0': DEV 0000:3f:0e.0
EDAC sbridge: Driver loaded.

What happens is that bus_register needs a statically allocated lock_key
because the last is handed in to lockdep. However, struct mem_ctl_info
embeds struct bus_type (the whole struct, not a pointer to it) and the
whole thing gets dynamically allocated.

Fix this by using a statically allocated struct bus_type for the MC bus.

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: stable@kernel.org # v3.10
Signed-off-by: Tony Luck <tony.luck@intel.com>
2013-07-23 16:01:28 -07:00
Sachin Kamat 8e42e211e4 edac: Remove redundant platform_set_drvdata()
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2013-07-17 12:49:55 -04:00
Linus Torvalds d144746478 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "MIPS updates:

   - All the things that didn't make 3.10.
   - Removes the Windriver PPMC platform.  Nobody will miss it.
   - Remove a workaround from kernel/irq/irqdomain.c which was there
     exclusivly for MIPS.  Patch by Grant Likely.
   - More small improvments for the SEAD 3 platform
   - Improvments on the BMIPS / SMP support for the BCM63xx series.
   - Various cleanups of dead leftovers.
   - Platform support for the Cavium Octeon-based EdgeRouter Lite.

  Two large KVM patchsets didn't make it for this pull request because
  their respective authors are vacationing"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (124 commits)
  MIPS: Kconfig: Add missing MODULES dependency to VPE_LOADER
  MIPS: BCM63xx: CLK: Add dummy clk_{set,round}_rate() functions
  MIPS: SEAD3: Disable L2 cache on SEAD-3.
  MIPS: BCM63xx: Enable second core SMP on BCM6328 if available
  MIPS: BCM63xx: Add SMP support to prom.c
  MIPS: define write{b,w,l,q}_relaxed
  MIPS: Expose missing pci_io{map,unmap} declarations
  MIPS: Malta: Update GCMP detection.
  Revert "MIPS: make CAC_ADDR and UNCAC_ADDR account for PHYS_OFFSET"
  MIPS: APSP: Remove <asm/kspd.h>
  SSB: Kconfig: Amend SSB_EMBEDDED dependencies
  MIPS: microMIPS: Fix improper definition of ISA exception bit.
  MIPS: Don't try to decode microMIPS branch instructions where they cannot exist.
  MIPS: Declare emulate_load_store_microMIPS as a static function.
  MIPS: Fix typos and cleanup comment
  MIPS: Cleanup indentation and whitespace
  MIPS: BMIPS: support booting from physical CPU other than 0
  MIPS: Only set cpu_has_mmips if SYS_SUPPORTS_MICROMIPS
  MIPS: GIC: Fix gic_set_affinity infinite loop
  MIPS: Don't save/restore OCTEON wide multiplier state on syscalls.
  ...
2013-07-13 14:52:21 -07:00
Linus Torvalds f3acb96f38 Add MCE signatures for family 0x15, models 30-3f.
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Merge tag 'edac_for_3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull AMD EDAC update from Borislav Petkov:
 "Add MCE signatures for family 0x15, models 30-3f"

* tag 'edac_for_3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC, MCE, AMD: Add an MCE signature for new Fam15h models
  EDAC: Replace strict_strtoul() with kstrtoul()
2013-07-03 13:11:18 -07:00
David Daney 9ddebc46e7 MIPS: OCTEON: Rename Kconfig CAVIUM_OCTEON_REFERENCE_BOARD to CAVIUM_OCTEON_SOC
CAVIUM_OCTEON_SOC most place we used to use CPU_CAVIUM_OCTEON.  This
allows us to CPU_CAVIUM_OCTEON in places where we have no OCTEON SOC.

Remove CAVIUM_OCTEON_SIMULATOR as it doesn't really do anything, we can
get the same configuration with CAVIUM_OCTEON_SOC.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-ide@vger.kernel.org
Cc: linux-edac@vger.kernel.org
Cc: linux-i2c@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: spi-devel-general@lists.sourceforge.net
Cc: devel@driverdev.osuosl.org
Cc: linux-usb@vger.kernel.org
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Patchwork: https://patchwork.linux-mips.org/patch/5295/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-10 18:01:25 +02:00
Aravind Gopalakrishnan aad19e5176 EDAC, MCE, AMD: Add an MCE signature for new Fam15h models
Add a new error signature for Family 15h, models 30h-3fh. Patch has been
tested on Fam15h using mce_amd_inj facility and has been verified to
work correctly.

Signed-off-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
 [ cleanup commit message and error string ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-06-08 10:17:03 +02:00
Jingoo Han c7f62fc87b EDAC: Replace strict_strtoul() with kstrtoul()
The usage of strict_strtoul() is not preferred, because strict_strtoul()
is obsolete. Thus, kstrtoul() should be used.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-06-08 10:16:33 +02:00
Stephen Rothwell 40b313608a Finally eradicate CONFIG_HOTPLUG
Ever since commit 45f035ab9b ("CONFIG_HOTPLUG should be always on"),
it has been basically impossible to build a kernel with CONFIG_HOTPLUG
turned off.  Remove all the remaining references to it.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-03 14:20:18 -07:00
Borislav Petkov bbb013b920 amd64_edac: Fix bogus sysfs file permissions
Fix yet another issue caught by 8f46baaa7e ("base: core: WARN() about
bogus permissions on device attributes").

Signed-off-by: Borislav Petkov <bp@suse.de>
2013-05-21 09:13:11 +02:00
Linus Torvalds 7462543abb Two small EDAC fixes.
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Merge tag 'edac_fixes_for_3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull two small EDAC fixes from Borislav Petkov.

* tag 'edac_fixes_for_3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC: Don't give write permission to read-only files
  EDAC, mc_sysfs.c: Fix string array pointer types
2013-05-09 10:11:08 -07:00
Srivatsa S. Bhat c8c64d165c EDAC: Don't give write permission to read-only files
I get the following warning on boot:

------------[ cut here ]------------
WARNING: at drivers/base/core.c:575 device_create_file+0x9a/0xa0()
Hardware name:  -[8737R2A]-
Write permission without 'store'
...
</snip>

Drilling down, this is related to dynamic channel ce_count attribute
files sporting a S_IWUSR mode without a ->store() function. Looking
around, it appears that they aren't supposed to have a ->store()
function. So remove the bogus write permission to get rid of the
warning.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: <stable@vger.kernel.org> # 3.[89]
[ shorten commit message ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-05-09 12:40:45 +02:00
Linus Torvalds e2823299cd Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull edac fixes from Mauro Carvalho Chehab:
 "Two edac fixes:

   - i7300_edac currently reports a wrong number of DIMMs when the
     memory controller is in single channel mode

   - on some Sandy Bridge machines, the EDAC driver bails out as one of
     the PCI IDs used by the driver is hidden by BIOS.  As the driver
     uses it only to detect the type of memory, make it optional at the
     driver"

* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac:
  edac: sb_edac.c should not require prescence of IMC_DDRIO device
  i7300_edac: Fix memory detection in single mode
2013-04-30 10:00:49 -07:00
Luck, Tony de4772c621 edac: sb_edac.c should not require prescence of IMC_DDRIO device
The Sandy Bridge EDAC driver uses a register in the IMC_DDRIO CSR
space to determine the type of DIMMs (registered or unregistered).
But this device does not exist on some single socket Sandy Bridge
servers.  While the type of DIMMs is nice to know, it is not essential
for this driver's other functions. So it seems harsh to have it
refuse to load at all when it cannot find this device.

Make the check for this device be optional. If it isn't present
just report the memory type as "MEM_UNKNOWN".

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-29 10:32:40 -03:00
Mauro Carvalho Chehab 33ad41263d i7300_edac: Fix memory detection in single mode
When the machine is on single mode, only branch 0 channel 0
is valid. However, the code is not honouring it:

[ 1952.639341] EDAC DEBUG: i7300_get_mc_regs: Memory controller operating on single mode
...
[ 1952.639351] EDAC DEBUG: i7300_init_csrows: 		AMB-present CH0 = 0x1:
[ 1952.639353] EDAC DEBUG: i7300_init_csrows: 		AMB-present CH1 = 0x0:
[ 1952.639355] EDAC DEBUG: i7300_init_csrows: 		AMB-present CH2 = 0x0:
[ 1952.639358] EDAC DEBUG: i7300_init_csrows: 		AMB-present CH3 = 0x0:
...
[ 1952.639360] EDAC DEBUG: decode_mtr: 	MTR0 CH0: DIMMs are Present (mtr)
[ 1952.639362] EDAC DEBUG: decode_mtr: 		WIDTH: x8
[ 1952.639363] EDAC DEBUG: decode_mtr: 		ELECTRICAL THROTTLING is enabled
[ 1952.639364] EDAC DEBUG: decode_mtr: 		NUMBANK: 4 bank(s)
[ 1952.639366] EDAC DEBUG: decode_mtr: 		NUMRANK: single
[ 1952.639367] EDAC DEBUG: decode_mtr: 		NUMROW: 16,384 - 14 rows
[ 1952.639368] EDAC DEBUG: decode_mtr: 		NUMCOL: 1,024 - 10 columns
[ 1952.639370] EDAC DEBUG: decode_mtr: 		SIZE: 512 MB
[ 1952.639371] EDAC DEBUG: decode_mtr: 		ECC code is 8-byte-over-32-byte SECDED+ code
[ 1952.639373] EDAC DEBUG: decode_mtr: 		Scrub algorithm for x8 is on enhanced mode
[ 1952.639374] EDAC DEBUG: decode_mtr: 	MTR0 CH1: DIMMs are Present (mtr)
[ 1952.639376] EDAC DEBUG: decode_mtr: 		WIDTH: x8
[ 1952.639377] EDAC DEBUG: decode_mtr: 		ELECTRICAL THROTTLING is enabled
[ 1952.639379] EDAC DEBUG: decode_mtr: 		NUMBANK: 4 bank(s)
[ 1952.639380] EDAC DEBUG: decode_mtr: 		NUMRANK: single
[ 1952.639381] EDAC DEBUG: decode_mtr: 		NUMROW: 16,384 - 14 rows
[ 1952.639383] EDAC DEBUG: decode_mtr: 		NUMCOL: 1,024 - 10 columns
[ 1952.639384] EDAC DEBUG: decode_mtr: 		SIZE: 512 MB
[ 1952.639385] EDAC DEBUG: decode_mtr: 		ECC code is 8-byte-over-32-byte SECDED+ code
[ 1952.639387] EDAC DEBUG: decode_mtr: 		Scrub algorithm for x8 is on enhanced mode
...
[ 1952.639449] EDAC DEBUG: print_dimm_size:               channel 0 | channel 1 | channel 2 | channel 3 |
[ 1952.639451] EDAC DEBUG: print_dimm_size: -------------------------------------------------------------
[ 1952.639453] EDAC DEBUG: print_dimm_size: csrow/SLOT 0   512 MB   |  512 MB   |    0 MB   |    0 MB   |
[ 1952.639456] EDAC DEBUG: print_dimm_size: csrow/SLOT 1     0 MB   |    0 MB   |    0 MB   |    0 MB   |
[ 1952.639458] EDAC DEBUG: print_dimm_size: csrow/SLOT 2     0 MB   |    0 MB   |    0 MB   |    0 MB   |
[ 1952.639460] EDAC DEBUG: print_dimm_size: csrow/SLOT 3     0 MB   |    0 MB   |    0 MB   |    0 MB   |
[ 1952.639462] EDAC DEBUG: print_dimm_size: csrow/SLOT 4     0 MB   |    0 MB   |    0 MB   |    0 MB   |
[ 1952.639464] EDAC DEBUG: print_dimm_size: csrow/SLOT 5     0 MB   |    0 MB   |    0 MB   |    0 MB   |
[ 1952.639466] EDAC DEBUG: print_dimm_size: csrow/SLOT 6     0 MB   |    0 MB   |    0 MB   |    0 MB   |
[ 1952.639468] EDAC DEBUG: print_dimm_size: csrow/SLOT 7     0 MB   |    0 MB   |    0 MB   |    0 MB   |
[ 1952.639470] EDAC DEBUG: print_dimm_size: -------------------------------------------------------------

Instead of detecting a single memory at channel 0, it is showing
twice the memory.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-29 10:32:39 -03:00
Aravind Gopalakrishnan 94c1acf2c8 amd64_edac: Add Family 16h support
Add code to handle DRAM ECC errors decoding for Fam16h.

Tested on Fam16h with ECC turned on using the mce_amd_inj facility and
works fine.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Boris: cleanups and clarifications ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-04-19 12:46:50 +02:00
Borislav Petkov 8b7719e08a EDAC, mc_sysfs.c: Fix string array pointer types
Those should be const ptr to a const string, fix them.

Signed-off-by: Borislav Petkov <bp@suse.de>
2013-03-25 15:44:25 +01:00
Mauro Carvalho Chehab 9713faecff EDAC: Merge mci.mem_is_per_rank with mci.csbased
Both mci.mem_is_per_rank and mci.csbased denote the same thing: the
memory controller is csrows based. Merge both fields into one.

There's no need for the driver to actually fill it, as the core detects
it by checking if one of the layers has the csrows type as part of the
memory hierarchy:

	if (layers[i].type == EDAC_MC_LAYER_CHIP_SELECT)
			per_rank = true;

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-03-16 06:32:30 +01:00
Mauro Carvalho Chehab 1eef128254 amd64_edac: Correct DIMM sizes
We were filling the csrow size with a wrong value. 16a528ee39 ("EDAC:
Fix csrow size reported in sysfs") tried to address the issue. It fixed
the report with the old API but not with the new one. Correct it for the
new API too.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
[ make it a per-csrow accounting regardless of ->channel_count ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-03-16 06:32:02 +01:00
Stephen Hemminger fbe2d3616c EDAC: Make sysfs functions static
Fixes lots of sparse warnings here.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-03-05 11:33:57 +01:00
Linus Torvalds ad6c2c2eb3 Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull EDAC fixes and ghes-edac from Mauro Carvalho Chehab:
 "For:

   - Some fixes at edac drivers (i7core_edac, sb_edac, i3200_edac);
   - error injection support for i5100, when EDAC debug is enabled;
   - fix edac when it is loaded builtin (early init for the subsystem);
   - a "Firmware First" EDAC driver, allowing ghes to report errors via
     EDAC (ghes-edac).

  With regards to ghes-edac, this fixes a longstanding BZ at Red Hat
  that happens with Nehalem and Sandy Bridge CPUs: when both GHES and
  i7core_edac or sb_edac are running, the error reports are
  unpredictable, as both BIOS and OS race to access the registers.  With
  ghes-edac, the EDAC core will refuse to register any other concurrent
  memory error driver.

  This patchset moves the ghes struct definitions to a separate header
  file (include/acpi/ghes.h) and adds 3 hooks at apei/ghes.c to
  register/unregister and to report errors via ghes-edac.  Those changes
  were acked by ghes driver maintainer (Huang)."

* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (30 commits)
  i5100_edac: convert to use simple_open()
  ghes_edac: fix to use list_for_each_entry_safe() when delete list items
  ghes_edac: Fix RAS tracing
  ghes_edac: Make it compliant with UEFI spec 2.3.1
  ghes_edac: Improve driver's printk messages
  ghes_edac: Don't credit the same memory dimm twice
  ghes_edac: do a better job of filling EDAC DIMM info
  ghes_edac: add support for reporting errors via EDAC
  ghes_edac: Register at EDAC core the BIOS report
  ghes: add the needed hooks for EDAC error report
  ghes: move structures/enum to a header file
  edac: add support for error type "Info"
  edac: add support for raw error reports
  edac: reduce stack pressure by using a pre-allocated buffer
  edac: lock module owner to avoid error report conflicts
  edac: remove proc_name from mci structure
  edac: add a new memory layer type
  edac: initialize the core earlier
  edac: better report error conditions in debug mode
  i5100_edac: Remove two checkpatch warnings
  ...
2013-02-28 20:42:33 -08:00
Wei Yongjun b0769891ba i5100_edac: convert to use simple_open()
This removes an open coded simple_open() function and
replaces file operations references to the function
with simple_open() instead.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-26 10:06:18 -03:00
Wei Yongjun 5dae92a718 ghes_edac: fix to use list_for_each_entry_safe() when delete list items
Since we will remove items off the list using list_del() we need
to use a safe version of the list_for_each_entry() macro aptly named
list_for_each_entry_safe().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-26 10:05:35 -03:00
Mauro Carvalho Chehab 8ae8f50ad8 ghes_edac: Fix RAS tracing
With the current version of CPER, there's no way to associate an
error with the memory error. So, the error location in EDAC
layers is unused.

As CPER has its own idea about memory architectural layers, just
output whatever is there inside the driver's detail at the RAS
tracepoint.

The EDAC location keeps untouched, in the case that, in some future,
we could actually map the error into the dimm labels.

Now, the error message:

[   72.396625] {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0
[   72.396627] {1}[Hardware Error]: APEI generic hardware error status
[   72.396628] {1}[Hardware Error]: severity: 2, corrected
[   72.396630] {1}[Hardware Error]: section: 0, severity: 2, corrected
[   72.396632] {1}[Hardware Error]: flags: 0x01
[   72.396634] {1}[Hardware Error]: primary
[   72.396635] {1}[Hardware Error]: section_type: memory error
[   72.396637] {1}[Hardware Error]: error_status: 0x0000000000000400
[   72.396638] {1}[Hardware Error]: node: 3
[   72.396639] {1}[Hardware Error]: card: 0
[   72.396640] {1}[Hardware Error]: module: 0
[   72.396641] {1}[Hardware Error]: device: 0
[   72.396643] {1}[Hardware Error]: error_type: 18, unknown
[   72.396666] EDAC MC0: 1 CE reserved error (18) on unknown label (node:3 card:0 module:0 page:0x0 offset:0x0 grain:0 syndrome:0x0 - status(0x0000000000000400): Storage error in DRAM memory)

Is properly represented on the trace event:

     kworker/0:2-584   [000] ....    72.396657: mc_event: 1 Corrected error: reserved error (18) on unknown label (mc:0 location👎-1:-1 address:0x00000000 grain:1 syndrome:0x00000000 APEI location: node:3 card:0 module:0 status(0x0000000000000400): Storage error in DRAM memory)

Tested on a 4 sockets E5-4650 Sandy Bridge machine.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:17 -03:00
Mauro Carvalho Chehab 689c9cd812 ghes_edac: Make it compliant with UEFI spec 2.3.1
The UEFI spec defines the memory error types ans the bits that
validate each field on the memory error record, at
Appendix N om items N.2.5 (Memory Error Section) and
N.2.11 (Error Status). Make the error description compliant with
it, only showing the valid fields.

The EDAC error log is now properly reporting the error:

[  281.556854] mce: [Hardware Error]: Machine check events logged
[  281.557042] {2}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0
[  281.557044] {2}[Hardware Error]: APEI generic hardware error status
[  281.557046] {2}[Hardware Error]: severity: 2, corrected
[  281.557048] {2}[Hardware Error]: section: 0, severity: 2, corrected
[  281.557050] {2}[Hardware Error]: flags: 0x01
[  281.557052] {2}[Hardware Error]: primary
[  281.557053] {2}[Hardware Error]: section_type: memory error
[  281.557055] {2}[Hardware Error]: error_status: 0x0000000000000400
[  281.557056] {2}[Hardware Error]: node: 3
[  281.557057] {2}[Hardware Error]: card: 0
[  281.557058] {2}[Hardware Error]: module: 1
[  281.557059] {2}[Hardware Error]: device: 0
[  281.557061] {2}[Hardware Error]: error_type: 18, unknown
[  281.557067] EDAC DEBUG: ghes_edac_report_mem_error: error validation_bits: 0x000040b9
[  281.557084] EDAC MC0: 1 CE reserved error (18) on unknown label (node:3 card:0 module:1 page:0x0 offset:0x0 grain:0 syndrome:0x0 - status(0x0000000000000400): Storage error in DRAM memory)

Tested on a 4 CPUs E5-4650 Sandy Bridge machine.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:16 -03:00
Mauro Carvalho Chehab d2a6856614 ghes_edac: Improve driver's printk messages
Provide a better infrastructure for printk's inside the driver:
	- use edac_dbg() for debug messages;
	- standardize the usage of pr_info();
	- provide warning about the risk of relying on this
	  driver.

While here, changes the size of a fake memory to 1 page. This is
as good or as bad as 1000 pages, but it is easier for userspace to
detect, as I don't expect that any machine implementing GHES would
provide just 1 page available ;)

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Conflicts:
	drivers/edac/ghes_edac.c
2013-02-25 19:42:15 -03:00
Mauro Carvalho Chehab 5ee726db52 ghes_edac: Don't credit the same memory dimm twice
On my tests on a 4xE5-4650 CPU's system, the GHES
EDAC driver is called twice. As the SMBIOS DMI enumeration
call will seek for the entire DIMM sockets in the system, on
this machine, equipped with 128 GB of RAM, the memory is
displayed twice:

          +-----------------------+
          |    mc0    |    mc1    |
----------+-----------------------+
memory45: |  8192 MB  |  8192 MB  |
memory44: |     0 MB  |     0 MB  |
----------+-----------------------+
memory43: |     0 MB  |     0 MB  |
memory42: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory41: |     0 MB  |     0 MB  |
memory40: |     0 MB  |     0 MB  |
----------+-----------------------+
memory39: |  8192 MB  |  8192 MB  |
memory38: |     0 MB  |     0 MB  |
----------+-----------------------+
memory37: |     0 MB  |     0 MB  |
memory36: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory35: |     0 MB  |     0 MB  |
memory34: |     0 MB  |     0 MB  |
----------+-----------------------+
memory33: |  8192 MB  |  8192 MB  |
memory32: |     0 MB  |     0 MB  |
----------+-----------------------+
memory31: |     0 MB  |     0 MB  |
memory30: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory29: |     0 MB  |     0 MB  |
memory28: |     0 MB  |     0 MB  |
----------+-----------------------+
memory27: |  8192 MB  |  8192 MB  |
memory26: |     0 MB  |     0 MB  |
----------+-----------------------+
memory25: |     0 MB  |     0 MB  |
memory24: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory23: |     0 MB  |     0 MB  |
memory22: |     0 MB  |     0 MB  |
----------+-----------------------+
memory21: |  8192 MB  |  8192 MB  |
memory20: |     0 MB  |     0 MB  |
----------+-----------------------+
memory19: |     0 MB  |     0 MB  |
memory18: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory17: |     0 MB  |     0 MB  |
memory16: |     0 MB  |     0 MB  |
----------+-----------------------+
memory15: |  8192 MB  |  8192 MB  |
memory14: |     0 MB  |     0 MB  |
----------+-----------------------+
memory13: |     0 MB  |     0 MB  |
memory12: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory11: |     0 MB  |     0 MB  |
memory10: |     0 MB  |     0 MB  |
----------+-----------------------+
memory9:  |  8192 MB  |  8192 MB  |
memory8:  |     0 MB  |     0 MB  |
----------+-----------------------+
memory7:  |     0 MB  |     0 MB  |
memory6:  |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory5:  |     0 MB  |     0 MB  |
memory4:  |     0 MB  |     0 MB  |
----------+-----------------------+
memory3:  |  8192 MB  |  8192 MB  |
memory2:  |     0 MB  |     0 MB  |
----------+-----------------------+
memory1:  |     0 MB  |     0 MB  |
memory0:  |  8192 MB  |  8192 MB  |
----------+-----------------------+

Total sum of 256 GB.

As there's no reliable way to credit DIMMS to the right memory
controller, just put everything on memory controller 0 (with should
always exist).

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:14 -03:00
Mauro Carvalho Chehab 32fa1f53c2 ghes_edac: do a better job of filling EDAC DIMM info
Instead of just faking a random value for the DIMM data, get
the information that it is available via DMI table.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:13 -03:00
Mauro Carvalho Chehab f04c62a703 ghes_edac: add support for reporting errors via EDAC
Now that the EDAC core is capable of just forward the errors via
the userspace API, add a report mechanism for the GHES errors.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:13 -03:00
Mauro Carvalho Chehab 77c5f5d2f2 ghes_edac: Register at EDAC core the BIOS report
Register GHES at EDAC MC core, in order to avoid other
drivers to also handle errors and mangle with error data.

The edac core will warrant that just one driver will be used,
so the first one to register (BIOS first) will be the one that
will be reporting the hardware errors.

For now, the EDAC driver does nothing but to register at the
EDAC core, preventing the hardware-driven mechanism to
interfere with GHES.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:12 -03:00
Linus Torvalds 06991c28f3 Driver core patches for 3.9-rc1
Here is the big driver core merge for 3.9-rc1
 
 There are two major series here, both of which touch lots of drivers all
 over the kernel, and will cause you some merge conflicts:
   - add a new function called devm_ioremap_resource() to properly be
     able to check return values.
   - remove CONFIG_EXPERIMENTAL
 
 If you need me to provide a merged tree to handle these resolutions,
 please let me know.
 
 Other than those patches, there's not much here, some minor fixes and
 updates.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core patches from Greg Kroah-Hartman:
 "Here is the big driver core merge for 3.9-rc1

  There are two major series here, both of which touch lots of drivers
  all over the kernel, and will cause you some merge conflicts:

   - add a new function called devm_ioremap_resource() to properly be
     able to check return values.

   - remove CONFIG_EXPERIMENTAL

  Other than those patches, there's not much here, some minor fixes and
  updates"

Fix up trivial conflicts

* tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits)
  base: memory: fix soft/hard_offline_page permissions
  drivercore: Fix ordering between deferred_probe and exiting initcalls
  backlight: fix class_find_device() arguments
  TTY: mark tty_get_device call with the proper const values
  driver-core: constify data for class_find_device()
  firmware: Ignore abort check when no user-helper is used
  firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER
  firmware: Make user-mode helper optional
  firmware: Refactoring for splitting user-mode helper code
  Driver core: treat unregistered bus_types as having no devices
  watchdog: Convert to devm_ioremap_resource()
  thermal: Convert to devm_ioremap_resource()
  spi: Convert to devm_ioremap_resource()
  power: Convert to devm_ioremap_resource()
  mtd: Convert to devm_ioremap_resource()
  mmc: Convert to devm_ioremap_resource()
  mfd: Convert to devm_ioremap_resource()
  media: Convert to devm_ioremap_resource()
  iommu: Convert to devm_ioremap_resource()
  drm: Convert to devm_ioremap_resource()
  ...
2013-02-21 12:05:51 -08:00
Mauro Carvalho Chehab e7e248304c edac: add support for raw error reports
That allows APEI GHES driver to report errors directly, using
the EDAC error report API.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 14:16:03 -03:00
Mauro Carvalho Chehab c7ef764554 edac: reduce stack pressure by using a pre-allocated buffer
The number of variables at the stack is too big.
Reduces the stack usage by using a pre-allocated error
buffer.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 13:48:45 -03:00
Mauro Carvalho Chehab 80cc7d87d5 edac: lock module owner to avoid error report conflicts
APEI GHES and i7core_edac/sb_edac currently can be loaded at
the same time, but those are Highlander modules:
	"There can be only one".

There are two reasons for that:

1) Each driver assumes that it is the only one registering at
   the EDAC core, as it is driver's responsibility to number
   the memory controllers, and all of them start from 0;

2) If BIOS is handling the memory errors, the OS can't also be
   doing it, as one will mangle with the other.

So, we need to add an module owner's lock at the EDAC core,
in order to avoid having two different modules handling memory
errors at the same time. The best way for doing this lock seems
to use the driver's name, as this is unique, and won't require
changes on every driver.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 11:06:38 -03:00
Mauro Carvalho Chehab c66b5a79a9 edac: add a new memory layer type
There are some cases where the memory controller layout is
completely hidden. This is the case of firmware-driven error
code, like the one provided by GHES. Add a new layer to be
used on such memory error report mechanisms.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 11:06:37 -03:00
Mauro Carvalho Chehab 4ab19b06ac edac: initialize the core earlier
In order for it to work with it builtin, the EDAC core should
be initialized earlier, otherwise the ghes_edac driver initializes
before edac_mc_sysfs_init() being called:

...
[    4.998373] EDAC MC0: Giving out device to 'ghes_edac.c' 'ghes_edac': DEV ghes
...
[    4.998373] EDAC MC1: Giving out device to 'ghes_edac.c' 'ghes_edac': DEV ghes
[    6.519495] EDAC MC: Ver: 3.0.0
[    6.523749] EDAC DEBUG: edac_mc_sysfs_init: device mc created

The net result is that no EDAC sysfs nodes will appear.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 11:06:36 -03:00
Mauro Carvalho Chehab 3d958823e2 edac: better report error conditions in debug mode
It is hard to find what's wrong without a proper error
report. Improve it, in debug mode.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 11:06:35 -03:00
Mauro Carvalho Chehab 59b9796d1e i5100_edac: Remove two checkpatch warnings
The last changeset introduced a few checkpatch warnings:

WARNING: debugfs_remove_recursive(NULL) is safe this check is probably not required
261: FILE: drivers/edac/i5100_edac.c:1207:
+       if (priv->debugfs)
+               debugfs_remove_recursive(priv->debugfs);

WARNING: debugfs_remove(NULL) is safe this check is probably not required
290: FILE: drivers/edac/i5100_edac.c:1250:
+       if (i5100_debugfs)
+               debugfs_remove(i5100_debugfs);

Get rid of them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 11:06:34 -03:00
Niklas Söderlund 9cbc6d38f2 i5100_edac: connect fault injection to debugfs node
Create a debugfs direcotry i5100_edac/mcX for each memory controller and
add nodes to control how fault injection is preformed.

After configuring an injection using inject_channel, inject_deviceptr1,
inject_deviceptr2, inject_eccmask1, inject_eccmask2 and inject_hlinesel
trigger the injection by writing anything to inject_enable.

Example of a CE injection:

echo 0 > /sys/kernel/debug/i5100_edac/mc0/inject_channel
echo 1 > /sys/kernel/debug/i5100_edac/mc0/inject_hlinesel
echo 61440 > /sys/kernel/debug/i5100_edac/mc0/inject_eccmask1
echo 1 > /sys/kernel/debug/i5100_edac/mc0/inject_enable

Example of UE injection:

echo 0 > /sys/kernel/debug/i5100_edac/mc0/inject_channel
echo 2 > /sys/kernel/debug/i5100_edac/mc0/inject_hlinesel
echo 65535 > /sys/kernel/debug/i5100_edac/mc0/inject_eccmask1
echo 65535 > /sys/kernel/debug/i5100_edac/mc0/inject_eccmask2
echo 17 > /sys/kernel/debug/i5100_edac/mc0/inject_deviceptr1
echo 0 > /sys/kernel/debug/i5100_edac/mc0/inject_deviceptr2
echo 1 > /sys/kernel/debug/i5100_edac/mc0/inject_enable

Sometimes it is needed to enable the injection more then once (echo to
the inject_enable node) for the injection to happen, I am not sure why.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ericsson.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 11:06:34 -03:00
Niklas Söderlund 53ceafd6a2 i5100_edac: add fault injection code
Add fault injection based on information datasheet for i5100, see 1. In
addition to the i5100 datasheet some missing information on injection
functions where found through experimentation and the i7300 datasheet,
see 2.

[1] Intel 5100 Memory Controller Hub Chipset
    Doc.Nr: 318378
    http://www.intel.com/content/dam/doc/datasheet/5100-
    memory-controller-hub-chipset-datasheet.pdf

[2] Intel 7300 Chipset MemoryController Hub (MCH)
    Doc.Nr: 318082
	http://www.intel.com/assets/pdf/datasheet/318082.pdf

Signed-off-by: Niklas Söderlund <niklas.soderlund@ericsson.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 11:06:33 -03:00
Niklas Söderlund 52608ba205 i5100_edac: probe for device 19 function 0
Probe and store the device handle for the device 19 function 0 during
driver initialization. The device is used during fault injection.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ericsson.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 11:06:32 -03:00
Mauro Carvalho Chehab e7100478fa edac: only create sdram_scrub_rate where supported
Currently, sdram_scrub_rate sysfs node is created even if the device
doesn't support get/set the scub rate. Change the logic to only
create this device node when the operation is supported.

Reported-by: Felipe Balbi <balbi@ti.com>
Acked-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 11:06:31 -03:00
Mauro Carvalho Chehab 61734e1835 i3200_edac: Fix the logic that detects filled memories
After running a series of tests on an HP DL320, filled with different
memory sizes, it was noticed that, when filled with just one DIMM
on such hardware, the driver wrongly detects twice the memory, and
thinks that both channels 0 and 1 are filled.

It seems to be partially caused by the BIOS and partially by the driver.

The i3200_edac current logic would be working fine if the BIOS were
disabling the unused second channel when just one DIMM is connected,
in order to do power-saving, as recommended on this chipset's datasheet.

However, the BIOS on this particular machine doesn't do it:

[   16.741421] EDAC DEBUG: how_many_channels: In dual channel mode
[   16.741424] EDAC DEBUG: how_many_channels: 2 DIMMS per channel enabled

So, the driver were assuming that 2 channels are enabled (well, they are,
but the second is unused).

Combined with that, I found two issues at the logic that creates the
EDAC data, that were failing when the two channels are not equally
filled (AFAICT, that happens only when just 1 DIMM is plugged).

The first one is that a 0 at DRB means that nothing is filled. The
driver's logic, however, do some calculation with that.

The second one is that the logic that fills the DIMM data currently
assumes that both channels are equally filled.

I tested the system already with the current configuration and my
patch and it is now working fine. So, for a 2R single DIMM 2Gb memory
at dimm slot 01 (channel 0), it is now displaying:

[   16.741406] EDAC DEBUG: i3200_get_drbs: drb[0][0] = 16, drb[1][0] = 0
[   16.741410] EDAC DEBUG: i3200_get_drbs: drb[0][1] = 32, drb[1][1] = 0
[   16.741413] EDAC DEBUG: i3200_get_drbs: drb[0][2] = 32, drb[1][2] = 0
[   16.741416] EDAC DEBUG: i3200_get_drbs: drb[0][3] = 32, drb[1][3] = 0
...
[   16.741896] EDAC DEBUG: i3200_probe1: csrow 0, channel 0, size = 1024 Mb
[   16.741899] EDAC DEBUG: i3200_probe1: csrow 1, channel 0, size = 1024 Mb

and the corresponding sysfs nodes are now properly filled.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 11:06:31 -03:00
Mauro Carvalho Chehab 5f466cb025 i3200_edac: Add more debug to the driver
Currently, it is not possible to know, when debug is enabled,
if the driver is using 2 DIMMS per channel mode or not. It is
not possible to know the values of the drbs registers, used
to identify the memory rank sizes.

Add debug for both, as it helps to track issues on the driver.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-21 11:06:22 -03:00
Linus Torvalds 55529fa576 EDAC updates for 3.9
Only one: AMD F16h MCE decoding enablement from Jacob Shin.
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Merge tag 'edac_3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC updates from Borislav Petkov:
 "Mostly AMD's side of EDAC.  It is basically a new family enablement
  stuff: AMD F16h MCE decoding enablement from Jacob Shin.  The rest is
  trivial cleanups."

* tag 'edac_3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  mpc85xx_edac: Fix typo
  EDAC, MCE, AMD: Remove unneeded exports
  EDAC, MCE, AMD: Add MCE decoding support for Family 16h
  EDAC, MCE, AMD: Make MC2 decoding per-family
  amd64_edac: Remove dead code
2013-02-20 11:28:50 -08:00
Mauro Carvalho Chehab 1339730e73 Linux 3.8-rc7
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Merge tag 'v3.8-rc7' into next

Linux 3.8-rc7

* tag 'v3.8-rc7': (12052 commits)
  Linux 3.8-rc7
  net: sctp: sctp_endpoint_free: zero out secret key data
  net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfree
  atm/iphase: rename fregt_t -> ffreg_t
  ARM: 7641/1: memory: fix broken mmap by ensuring TASK_UNMAPPED_BASE is aligned
  ARM: DMA mapping: fix bad atomic test
  ARM: realview: ensure that we have sufficient IRQs available
  ARM: GIC: fix GIC cpumask initialization
  net: usb: fix regression from FLAG_NOARP code
  l2tp: dont play with skb->truesize
  net: sctp: sctp_auth_key_put: use kzfree instead of kfree
  netback: correct netbk_tx_err to handle wrap around.
  xen/netback: free already allocated memory on failure in xen_netbk_get_requests
  xen/netback: don't leak pages on failure in xen_netbk_tx_check_gop.
  xen/netback: shutdown the ring if it contains garbage.
  drm/ttm: fix fence locking in ttm_buffer_object_transfer, 2nd try
  virtio_console: Don't access uninitialized data.
  net: qmi_wwan: add more Huawei devices, including E320
  net: cdc_ncm: add another Huawei vendor specific device
  ipv6/ip6_gre: fix error case handling in ip6gre_tunnel_xmit()
  ...
2013-02-20 15:45:52 -03:00
Linus Torvalds f98982ce80 Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform changes from Ingo Molnar:

 - Support for the Technologic Systems TS-5500 platform, by Vivien
   Didelot

 - Improved NUMA support on AMD systems:

   Add support for federated systems where multiple memory controllers
   can exist and see each other over multiple PCI domains.  This
   basically means that AMD node ids can be more than 8 now and the code
   handling this is taught to incorporate PCI domain into those IDs.

 - Support for the Goldfish virtual Android emulator, by Jun Nakajima,
   Intel, Google, et al.

 - Misc fixlets.

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Add TS-5500 platform support
  x86/srat: Simplify memory affinity init error handling
  x86/apb/timer: Remove unnecessary "if"
  goldfish: platform device for x86
  amd64_edac: Fix type usage in NB IDs and memory ranges
  amd64_edac: Fix PCI function lookup
  x86, AMD, NB: Use u16 for northbridge IDs in amd_get_nb_id
  x86, AMD, NB: Add multi-domain support
2013-02-19 20:11:07 -08:00
Baruch Siach e7d2c215e5 mpc85xx_edac: Fix typo
Correct typos.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Cc: Dave Jiang <djiang@mvista.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-02-10 13:28:41 +01:00
Joe Perches d3d09e1820 EDAC: Fix kcalloc argument order
First number, then size.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-01-30 11:38:25 +01:00
Dan Carpenter 8024c4c0b1 EDAC: Test correct variable in ->store function
We're testing for ->show but calling ->store().

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-01-30 11:38:11 +01:00
Borislav Petkov 0f08669e86 EDAC, MCE, AMD: Remove unneeded exports
Initially, those strings describing different parts of an MCE message
were shared with amd64_edac and were therefore exported to modules.
However, all except pp_msgs are used only in one place right now so hide
them and make them static.

No functionality change.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-22 22:40:03 +01:00
Jacob Shin 980eec8b20 EDAC, MCE, AMD: Add MCE decoding support for Family 16h
Add MCE decoding logic for AMD Family 16h processors.

Boris:

- drop unneeded uu_msgs export
- exit early in cat_mc1_mce and save us an indentation level

Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-22 22:39:58 +01:00
Jacob Shin 4a73d3de63 EDAC, MCE, AMD: Make MC2 decoding per-family
Currently only AMD Family 15h processors have special handling for MC2
errors. Since upcoming Family 16h will also need unique handling, let's
make MC2 handling part of amd_decoder_ops.

Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-22 22:39:54 +01:00
Borislav Petkov acc7fcb400 amd64_edac: Remove dead code
5e2af0c09e ("edac: Don't initialize csrow's first_page & friends when
not needed") removed useless initialization of variables but left in the
functions which did that. They're unused now so drop them.

Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-22 22:39:41 +01:00
Kees Cook 053417a53e drivers/edac: remove depends on CONFIG_EXPERIMENTAL
The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 12:11:26 -08:00
Daniel J Blueman c7e5301a1b amd64_edac: Fix type usage in NB IDs and memory ranges
Use appropriate types for northbridge IDs and memory ranges. Mark
immutable data const and keep within compilation unit on related
structures.

Signed-off-by: Daniel J Blueman <daniel@numascale-asia.com>
Link: http://lkml.kernel.org/r/1354265060-22956-2-git-send-email-daniel@numascale-asia.com
[Boris: Drop arg change to node_to_amd_nb]
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-10 16:18:00 +01:00
Daniel J Blueman e2c0bffea2 amd64_edac: Fix PCI function lookup
Fix locating sibling memory controller PCI functions by using the
correct PCI domain and use a northbridge descriptor only if found. We
need to at least warn if it wasn't found so that it gets fixed and we
don't go off with wrong results.

Signed-off-by: Daniel J Blueman <daniel@numascale-asia.com>
Link: http://lkml.kernel.org/r/1354265060-22956-1-git-send-email-daniel@numascale-asia.com
[Boris: remove wrong comment, sanitize code and warn if NB desc lookup fails]
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-10 16:17:59 +01:00
Daniel J Blueman 8b84c8df38 x86, AMD, NB: Use u16 for northbridge IDs in amd_get_nb_id
Change amd_get_nb_id to return u16 to support >255 memory controllers,
and related consistency fixes.

Signed-off-by: Daniel J Blueman <daniel@numascale-asia.com>
Link: http://lkml.kernel.org/r/1353997932-8475-2-git-send-email-daniel@numascale-asia.com
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-10 16:17:58 +01:00
Daniel J Blueman 772c3ff385 x86, AMD, NB: Add multi-domain support
Fix get_node_id to match northbridge IDs from the array of detected
ones, allowing multi-server support such as with Numascale's
NumaConnect, renaming to 'amd_get_node_id' for consistency.

Signed-off-by: Daniel J Blueman <daniel@numascale-asia.com>
Link: http://lkml.kernel.org/r/1353997932-8475-1-git-send-email-daniel@numascale-asia.com
[Boris: shorten lines to fit 80 cols]
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-10 16:17:58 +01:00
Linus Torvalds 57a0c1e2d6 Two error path fixes causing a crash and a Kconfig fix for an issue
which spilled all EDAC suboptions into the 'Device Drivers' menu.
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Merge tag 'edac_fixes_for_3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC fixes from Borislav Petkov:
 "Two error path fixes causing a crash and a Kconfig fix for an issue
  which spilled all EDAC suboptions into the 'Device Drivers' menu."

* tag 'edac_fixes_for_3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC: Cleanup device deregistering path
  EDAC: Fix EDAC Kconfig menu
  EDAC: Fix kernel panic on module unloading
2013-01-09 08:43:56 -08:00
Lans Zhang 44d22e2404 EDAC: Cleanup device deregistering path
Use device_unregister to replace put_device + device_del for
cleanup, and fix the potential use after free.

Signed-off-by: Lans Zhang <jia.zhang@windriver.com>
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-07 17:43:00 +01:00
Borislav Petkov 5445166384 EDAC: Fix EDAC Kconfig menu
After f65aad41772f("MIPS: Cavium: Add EDAC support."), when entering
the "Device Drivers" toplevel menu in menuconfig, the suboptions behind
EDAC appeared merged with the rest of the device drivers types. This was
because the menuconfig option EDAC is querying an EDAC_SUPPORT Kconfig
bool which was defined after the menu definition.

When pushing EDAC_SUPPORT up, before the menu definition, the variable
is defined earlier and the above menuconfig artifact doesn't happen.

Drop a useless menuconfig comment while at it.

Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-07 17:42:59 +01:00
Konstantin Khlebnikov 311bd84247 EDAC: Fix kernel panic on module unloading
This patch fixes use-after-free and double-free bugs in
edac_mc_sysfs_exit(). mci_pdev has single reference and put_device()
calls mc_attr_release() which calls kfree(). The following
device_del() works with already released memory. An another kfree() in
edac_mc_sysfs_exit() releses the same memory again. Great.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: stable@vger.kernel.org # 3.[67]
Cc: Denis Kirjanov <kirjanov@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Link: http://lkml.kernel.org/r/20121214110310.11019.21098.stgit@zurg
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-07 17:42:58 +01:00
Greg Kroah-Hartman 9b3c6e85c2 Drivers: edac: remove __dev* attributes.
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, and __devexit
from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Tim Small <tim@buttersideup.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Daney <david.daney@cavium.com>
Cc: Egor Martovetsky <egor@pasemi.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 15:57:03 -08:00
Lans Zhang 1c069100c1 i7core_edac: fix kernel crash on unloading i7core_edac.
It is easy to trigger this crash on 3.7.0:

root@intel_westmere_ep-3:~# modprobe -r i7core_edac
EDAC PCI: Removed device 0 for i7core_edac EDAC PCI controller: DEV 0000:fe:03.0
EDAC MC: Removed device 1 for i7core_edac.c i7 core #1: DEV 0000:fe:03.0
EDAC PCI: Removed device 1 for i7core_edac EDAC PCI controller: DEV 0000:ff:03.0
EDAC MC: Removed device 0 for i7core_edac.c i7 core #0: DEV 0000:ff:03.0
BUG: unable to handle kernel NULL pointer dereference at 0000000000000110
IP: [<ffffffff82069ee9>] __blocking_notifier_call_chain+0x29/0x80
PGD 1eaae7067 PUD 1e96e4067 PMD 0
Oops: 0000 [#1] PREEMPT SMP
Modules linked in: minix acpi_cpufreq freq_table mperf ioatdma processor edac_core(-) iTCO_wdt coretemp evdev hwmon lpc_ich dca mfd_core crc32c_intel ioapic [last unloaded: i7core_edac]
CPU 3
Pid: 1268, comm: modprobe Not tainted 3.7.0-WR5.0.1.0_standard+ #30 Intel Corporation S5520HC/S5520HC
RIP: 0010:[<ffffffff82069ee9>]  [<ffffffff82069ee9>] __blocking_notifier_call_chain+0x29/0x80
RSP: 0018:ffff8801eb12de28  EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000000000f0 RCX: 00000000ffffffff
RDX: ffff88012b452800 RSI: 0000000000000002 RDI: 00000000000000f0
RBP: ffff8801eb12de68 R08: 0000000000000000 R09: ffffea0004ad1118
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801eb12dee8 R14: ffff88012b452800 R15: 000000000060e518
FS:  00007f9ea95a9700(0000) GS:ffff8801efc20000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000110 CR3: 00000001262f1000 CR4: 00000000000007e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process modprobe (pid: 1268, threadinfo ffff8801eb12c000, task ffff8801e8421690)
Stack:
  ffff88012c802a00 ffff88012b445ec0 ffff88012c802300 ffff88012b452800
  0000000000000000 ffff8801eb12dee8 000000000060e080 000000000060e518
  ffff8801eb12de78 ffffffff82069f56 ffff8801eb12dea8 ffffffff824ead7c
Call Trace:
  [<ffffffff82069f56>] blocking_notifier_call_chain+0x16/0x20
  [<ffffffff824ead7c>] device_del+0x3c/0x1d0
  [<ffffffffa00095a8>] edac_mc_sysfs_exit+0x1c/0x2f [edac_core]
  [<ffffffffa000961c>] edac_exit+0x4f/0x56 [edac_core]
  [<ffffffff820a3d2a>] sys_delete_module+0x17a/0x240
  [<ffffffff8212da7c>] ? vm_munmap+0x5c/0x80
  [<ffffffff82877682>] system_call_fastpath+0x16/0x1b
Code: 90 90 55 48 89 e5 48 83 ec 40 48 89 5d d8 4c 89 65 e0 4c 89 6d e8 4c 89 75 f0 4c 89 7d f8 66 66 66 66 90 31 c0 49 89 d6 48 89 fb <48> 8b 57 20 49 89 f5 41 89 cf 4c 8d 67 20 48 85 d2 74 2c 4c 89
RIP  [<ffffffff82069ee9>] __blocking_notifier_call_chain+0x29/0x80
  RSP <ffff8801eb12de28>
CR2: 0000000000000110
---[ end trace b69acf12ccad1c0d ]---

Usually, edac_subsys is grabbed one time by pci at initialization.
But edac_subsys may be released several times if multiple pci MCs exist.
The fix just makes the operations balanced.

Signed-off-by: Lans Zhang <jia.zhang@windriver.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-21 08:01:23 -02:00
Niklas Söderlund c31d34fe92 i7core_edac: fix erroneous size of static array
Remove size from lookup arrays and mark them as const.

Reviewed-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Niklas Söderlund <niso@kth.se>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-21 08:01:20 -02:00
Mauro Carvalho Chehab da14d93d95 sb_edac: add a missing /n on a debug message
[   17.024963] EDAC DEBUG: get_memory_layout: TOHM: 132.160 GB (0x0000002043ffffff)<7>[   17.024971] EDAC DEBUG: get_memory_layout: SAD#0 DRAM up to 33.792 GB (0x0000000840000000) Interleave: 8:6 reg=0x000083c3

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-21 08:01:18 -02:00
Shaun Ruffell 80f5ab097b edac: edac_mc no longer deals with kobjects directly
There are no more embedded kobjects in struct mem_ctl_info. Remove a header and
a comment that does not reflect the code anymore.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-21 08:00:02 -02:00
Linus Torvalds cebfa85eb8 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "The MIPS bits for 3.8.  This also includes a bunch fixes that were
  sitting in the linux-mips.org git tree for a long time.  This pull
  request contains updates to several OCTEON drivers and the board
  support code for BCM47XX, BCM63XX, XLP, XLR, XLS, lantiq, Loongson1B,
  updates to the SSB bus support, MIPS kexec code and adds support for
  kdump.

  When pulling this, there are two expected merge conflicts in
  include/linux/bcma/bcma_driver_chipcommon.h which are trivial to
  resolve, just remove the conflict markers and keep both alternatives."

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (90 commits)
  MIPS: PMC-Sierra Yosemite: Remove support.
  VIDEO: Newport Fix console crashes
  MIPS: wrppmc: Fix build of PCI code.
  MIPS: IP22/IP28: Fix build of EISA code.
  MIPS: RB532: Fix build of prom code.
  MIPS: PowerTV: Fix build.
  MIPS: IP27: Correct fucked grammar in ops-bridge.c
  MIPS: Highmem: Fix build error if CONFIG_DEBUG_HIGHMEM is disabled
  MIPS: Fix potencial corruption
  MIPS: Fix for warning from FPU emulation code
  MIPS: Handle COP3 Unusable exception as COP1X for FP emulation
  MIPS: Fix poweroff failure when HOTPLUG_CPU configured.
  MIPS: MT: Fix build with CONFIG_UIDGID_STRICT_TYPE_CHECKS=y
  MIPS: Remove unused smvp.h
  MIPS/EDAC: Improve OCTEON EDAC support.
  MIPS: OCTEON: Add definitions for OCTEON memory contoller registers.
  MIPS: OCTEON: Add OCTEON family definitions to octeon-model.h
  ata: pata_octeon_cf: Use correct byte order for DMA in when built little-endian.
  MIPS/OCTEON/ata: Convert pata_octeon_cf.c to use device tree.
  MIPS: Remove usage of CEVT_R4K_LIB config option.
  ...
2012-12-14 14:27:45 -08:00
David Daney e1ced09797 MIPS/EDAC: Improve OCTEON EDAC support.
Some initialization errors are reported with the existing OCTEON EDAC
support patch.  Also some parts have more than one memory controller.

Fix the errors and add multiple controllers if present.

Signed-off-by: David Daney <david.daney@cavium.com>
2012-12-13 18:15:26 +01:00
Ralf Baechle f65aad4177 MIPS: Cavium: Add EDAC support.
Drivers for EDAC on Cavium.  Supported subsystems are:

 o CPU primary caches.  These are parity protected only, so only error
   reporting.
 o Second level cache - ECC protected, provides SECDED.
 o Memory: ECC / SECDEC if used with suitable DRAM modules.  The driver will
   will only initialize if ECC is enabled on a system so is safe to run on
   non-ECC memory.
 o PCI: Parity error reporting

Since it is very hard to test this sort of code the implementation is very
conservative and uses polling where possible for now.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reviewed-by: Borislav Petkov <borislav.petkov@amd.com>
2012-12-12 16:48:49 +01:00
Linus Torvalds 9ada9fd5df Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
Pull EDAC fixes from Borislav Petkov:

 - EDAC core error path fix, from Denis Kirjanov.

 - Generalization of AMD MCE bank names and some minor error reporting
   improvements.

 - EDAC core cleanups and simplifications, from Wei Yongjun.

 - amd64_edac fixes for sysfs-reported values, from Josh Hunt.

 - some heavy amd64_edac error reporting path shaving, leading to
   removing a bunch of code.

 - amd64_edac error injection method improvements.

 - EDAC core cleanups and fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (24 commits)
  EDAC, pci_sysfs: Use for_each_pci_dev to simplify the code
  EDAC: Handle error path in edac_mc_sysfs_init() properly
  MCE, AMD: Dump error status
  MCE, AMD: Report decoded error type first
  MCE, AMD: Dump CPU f/m/s triple with the error
  MCE, AMD: Remove functional unit references
  EDAC: Convert to use simple_open()
  EDAC, Calxeda highbank: Convert to use simple_open()
  EDAC: Fix mc size reported in sysfs
  EDAC: Fix csrow size reported in sysfs
  EDAC: Pass mci parent
  EDAC: Add memory controller flags
  amd64_edac: Fix csrows size and pages computation
  amd64_edac: Use DBAM_DIMM macro
  amd64_edac: Fix K8 chip select reporting
  amd64_edac: Reorganize error reporting path
  amd64_edac: Do not check whether error address is valid
  amd64_edac: Improve error injection
  amd64_edac: Cleanup error injection code
  amd64_edac: Small fixlets and cleanups
  ...
2012-12-11 11:28:43 -08:00
Wei Yongjun 3bfe5aae8e EDAC, pci_sysfs: Use for_each_pci_dev to simplify the code
Use for_each_pci_dev to simplify the code.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
[Boris: cleanup comments and drop loop brackets]
Signed-off-by: Borislav Petkov <bp@alien8.de>
2012-12-04 08:27:39 +01:00
Linus Torvalds b52c6402b5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull EDAC fixes from Mauro Carvalho Chehab:
 "One EDAC core fix, and a few driver fixes (i7300, i9275x, i7core)."

* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac:
  i7core_edac: fix panic when accessing sysfs files
  i7300_edac: Fix error flag testing
  edac: Fix the dimm filling for csrows-based layouts
  i82975x_edac: Fix dimm label initialization
2012-12-03 11:16:37 -08:00
Denis Kirjanov 2d56b109e3 EDAC: Handle error path in edac_mc_sysfs_init() properly
Make sure proper deregistration happens on all error paths in
edac_mc_sysfs_init.

Signed-off-by: Denis Kirjanov <kirjanov@gmail.com>
[ Boris: cleanup and concretize commit message ]
Signed-off-by: Borislav Petkov <bp@alien8.de>
2012-11-28 11:56:52 +01:00
Borislav Petkov d5c6770d4c MCE, AMD: Dump error status
Dump error status after decoding the error which describes the error
disposition.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:56:30 +01:00
Borislav Petkov d824c7718b MCE, AMD: Report decoded error type first
Instead of starting with the error details, report the decoded, readable
error type first.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:56:17 +01:00
Borislav Petkov f89f8388cd MCE, AMD: Dump CPU f/m/s triple with the error
It is very useful to have the family/model/stepping with the reported
error so dump it. This saves us asking the bug reporter about it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:55:57 +01:00
Borislav Petkov f05c41a9c6 MCE, AMD: Remove functional unit references
Having the functional unit names in each bank decode is only misleading
as this code supports multiple families and there's no guarantee the
mapping between FUs and MCE banks will stay the same.

And also, knowing the functional unit name doesn't help much since you
end up looking at the respective BKDG anyway.

So drop all FU references and use the MC bank numbers instead.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:55:44 +01:00
Wei Yongjun db7312a295 EDAC: Convert to use simple_open()
This removes an open coded simple_open() function and replaces file
operations references to the function with simple_open() instead.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:55:22 +01:00
Wei Yongjun f35d852e80 EDAC, Calxeda highbank: Convert to use simple_open()
This removes an open coded simple_open() function and replaces file
operations references to the function with simple_open() instead.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:55:07 +01:00
Josh Hunt 3c0622760a EDAC: Fix mc size reported in sysfs
This is the complement to previous commit "EDAC: Fix csrow size
reported in sysfs". This fixes the memory controller size reporting on
csrow-based memory controllers. The csrow size is already combined for
both channels. Without this patch memory size is reported doubled.

Signed-off-by: Josh Hunt <johunt@akamai.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:54:50 +01:00
Borislav Petkov 16a528ee39 EDAC: Fix csrow size reported in sysfs
On csrow-based memory controllers, we combine the csrow size from both
channels and there's no need to do that again in csrow_size_show which
leads to double the size of a csrow.

Fix it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:54:40 +01:00
Borislav Petkov 921a689965 EDAC: Pass mci parent
Initialize the mem_ctl_info descriptor of a csrow properly.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:54:23 +01:00
Borislav Petkov 1165276917 EDAC: Add memory controller flags
The first flag is ->csbased and will be used in common EDAC code later.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:48:04 +01:00
Borislav Petkov 10de6497a5 amd64_edac: Fix csrows size and pages computation
Make sure code pays attention to K8 having only one DCT, reformat and
cleanup code, correct debug messages, remove unused code.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:47:36 +01:00
Borislav Petkov 0a5dfc3140 amd64_edac: Use DBAM_DIMM macro
Instead of open-coding it, use the DBAM_DIMM macro in
amd64_csrow_nr_pages() which we have already.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:46:19 +01:00
Borislav Petkov bb89f5a054 amd64_edac: Fix K8 chip select reporting
This basically reverts 603adaf6b3 ("amd64_edac: fix K8 chip select
reporting") because it was a clumsy workaround for DIMM sizes reporting
on K8 which got superceded by a much more correct one with 41d8bfaba7
("amd64_edac: Improve DRAM address mapping") without removing the prior
one. Remove it now finally.

Reported-by: Josh Hunt <johunt@akamai.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:45:46 +01:00
Borislav Petkov 33ca0643c9 amd64_edac: Reorganize error reporting path
Rewrite CE/UE paths so that they use the same code and drop additional
code duplication in handle_ue. Add a struct err_info which collects
required info for the error reporting. This, in turn, helps slimming all
edac_mc_handle_error() calls down to one.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:45:34 +01:00
Borislav Petkov c8d1adf092 amd64_edac: Do not check whether error address is valid
All families report a valid error address when encountering a DRAM ECC
error so no need to check it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:45:11 +01:00
Borislav Petkov 66fed2d464 amd64_edac: Improve error injection
When injecting DRAM ECC errors over the F3xB[8,C] interface, the machine
does this by injecting the error in the next non-cached access. This
takes relatively long time on a normal system so that in order for us to
expedite it, we disable the caches around the injection.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:45:01 +01:00
Borislav Petkov 6e71a870b8 amd64_edac: Cleanup error injection code
Invert kstrtoul return value testing and win one indentation level.
Also, shorten up macro names so that the lines can fit into 80 cols. No
functional change.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:44:35 +01:00
Borislav Petkov 1f31677e0d amd64_edac: Small fixlets and cleanups
amd64_get_dram_hole_info: remove local variable 'base'.
sys_addr_to_dram_addr: do not clear local variable 'ret'. Also, sanitize
constants formatting.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:44:12 +01:00
Borislav Petkov f430d5707a EDAC: Handle empty msg strings when reporting errors
A reported error could look like this

[  226.178315] EDAC MC0: 1 CE  on mc#0csrow#0channel#0 (csrow:0 channel:0 page:0x427c0d offset:0xde0 grain:0 syndrome:0x1c6)

with two spaces back-to-back due to the msg argument of
edac_mc_handle_error being passed on empty by the specific drivers.
Handle that.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:24:12 +01:00
Borislav Petkov 4da1b7bfe7 EDAC: Remove useless assignment of error type
The tracepoint decodes the error type later anyway so remove a useless
assignment to the temporary p which gets overwritten later anyway.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:23:50 +01:00
Borislav Petkov 37929874d4 EDAC: Boundary-check edac_debug_level
Only levels [0:4] are allowed so enforce that. Also, while at it,
massage Kconfig text and add valid debug levels range to the module
parameter description.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:23:32 +01:00
Borislav Petkov 876bb331e2 EDAC: Respect operational state in edac_pci.c
Currently, we unconditionally enable PCI polling and we don't look at
the edac_op_state module parameter. Make this dependent on the parameter
setting supplied on the command line.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:22:47 +01:00
Prarit Bhargava 42709efb3a i7core_edac: fix panic when accessing sysfs files
The i7core_edac addrmatch_dev and chancounts_dev have sysfs files
associated with them.  The sysfs files, however, are coded so that the
parent device is is the mci device.  This is incorrect and the mci struct
should be obtained through the addrmatch_dev and chancounts_dev device's
private data field which is populated in i7core_create_sysfs_devices().

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-11-28 06:56:00 -02:00
Borislav Petkov 43aff26ce1 EDAC: Change Boris' email address
My @amd.com address will be invalid soon so move to private
email address.

Signed-off-by: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/1351532410-4887-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-10-30 10:05:51 +01:00
Jean Delvare 7e06b7a333 i7300_edac: Fix error flag testing
* Right-shift the values in GET_FBD_FAT_IDX and GET_FBD_NF_IDX, so
  that the callers get the result they expect.
* Fix definition of FERR_FAT_FBD_ERR_MASK.
* Call GET_FBD_NF_IDX, not GET_FBD_FAT_IDX, when operating on
  register FERR_NF_FBD. We were lucky they have the same definition.

This fixes kernel bug #44131:
https://bugzilla.kernel.org/show_bug.cgi?id=44131

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-25 07:43:00 -02:00
Mauro Carvalho Chehab 24bef66e74 edac: Fix the dimm filling for csrows-based layouts
The driver is currently filling data in a wrong way, on drivers
for csrows-based memory controller, when the first layer is a
csrow.

This is not easily to notice, as, in general, memories are
filed in dual, interleaved, symetric mode, as very few memory
controllers support asymetric modes.

While digging into a bug for i82795_edac driver, the asymetric
mode there is now working, allowing us to fill the machine with
4x1GB ranks at channel 0, and 2x512GB at channel 1:

Channel 0 ranks:
EDAC DEBUG: i82975x_init_csrows: DIMM A0: from page 0x00000000 to 0x0003ffff (size: 0x00040000 pages)
EDAC DEBUG: i82975x_init_csrows: DIMM A1: from page 0x00040000 to 0x0007ffff (size: 0x00040000 pages)
EDAC DEBUG: i82975x_init_csrows: DIMM A2: from page 0x00080000 to 0x000bffff (size: 0x00040000 pages)
EDAC DEBUG: i82975x_init_csrows: DIMM A3: from page 0x000c0000 to 0x000fffff (size: 0x00040000 pages)

Channel 1 ranks:
EDAC DEBUG: i82975x_init_csrows: DIMM B0: from page 0x00100000 to 0x0011ffff (size: 0x00020000 pages)
EDAC DEBUG: i82975x_init_csrows: DIMM B1: from page 0x00120000 to 0x0013ffff (size: 0x00020000 pages)

Instead of properly showing the memories as such, before this patch, it
shows the memory layout as:

          +-----------------------------------+
          |                mc0                |
          |  csrow0   |  csrow1   |  csrow2   |
----------+-----------------------------------+
channel1: |  1024 MB  |  1024 MB  |   512 MB  |
channel0: |  1024 MB  |  1024 MB  |   512 MB  |
----------+-----------------------------------+

as if both channels were symetric, grouping the DIMMs on a wrong
layout.

After this patch, the memory is correctly represented.
So, for csrows at layers[0], it shows:

          +-----------------------------------------------+
          |                      mc0                      |
          |  csrow0   |  csrow1   |  csrow2   |  csrow3   |
----------+-----------------------------------------------+
channel1: |   512 MB  |   512 MB  |     0 MB  |     0 MB  |
channel0: |  1024 MB  |  1024 MB  |  1024 MB  |  1024 MB  |
----------+-----------------------------------------------+

For csrows at layers[1], it shows:

        +-----------------------+
        |          mc0          |
        | channel0  | channel1  |
--------+-----------------------+
csrow3: |  1024 MB  |     0 MB  |
csrow2: |  1024 MB  |     0 MB  |
--------+-----------------------+
csrow1: |  1024 MB  |   512 MB  |
csrow0: |  1024 MB  |   512 MB  |
--------+-----------------------+

So, no matter of what comes first, the information between
channel and csrow will be properly represented.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-25 07:17:18 -02:00
Mauro Carvalho Chehab 4796968402 i82975x_edac: Fix dimm label initialization
The driver has only 4 hardcoded labels, but allows much more memory.
Fix it by removing the hardcoded logic, using snprintf() instead.

[   19.833972] general protection fault: 0000 [#1] SMP
[   19.837733] Modules linked in: i82975x_edac(+) edac_core firewire_ohci firewire_core crc_itu_t nouveau mxm_wmi wmi video i2c_algo_bit drm_kms_helper ttm drm i2c_core
[   19.837733] CPU 0
[   19.837733] Pid: 390, comm: udevd Not tainted 3.6.1-1.fc17.x86_64.debug #1 Dell Inc.                 Precision WorkStation 390    /0MY510
[   19.837733] RIP: 0010:[<ffffffff813463a8>]  [<ffffffff813463a8>] strncpy+0x18/0x30
[   19.837733] RSP: 0018:ffff880078535b68  EFLAGS: 00010202
[   19.837733] RAX: ffff880069fa9708 RBX: ffff880078588000 RCX: ffff880069fa9708
[   19.837733] RDX: 000000000000001f RSI: 5f706f5f63616465 RDI: ffff880069fa9708
[   19.837733] RBP: ffff880078535b68 R08: ffff880069fa9727 R09: 000000000000fffe
[   19.837733] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000003
[   19.837733] R13: 0000000000000000 R14: ffff880069fa9290 R15: ffff880079624a80
[   19.837733] FS:  00007f3de01ee840(0000) GS:ffff88007c400000(0000) knlGS:0000000000000000
[   19.837733] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.837733] CR2: 00007f3de00b9000 CR3: 0000000078dbc000 CR4: 00000000000007f0
[   19.837733] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   19.837733] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[   19.837733] Process udevd (pid: 390, threadinfo ffff880078534000, task ffff880079642450)
[   19.837733] Stack:
[   19.837733]  ffff880078535c18 ffffffffa017c6b8 00040000816d627f ffff880079624a88
[   19.837733]  ffffc90004cd6000 ffff880079624520 ffff88007ac21148 0000000000000000
[   19.837733]  0000000000000000 0004000000000000 feda000078535bc8 ffffffff810d696d
[   19.837733] Call Trace:
[   19.837733]  [<ffffffffa017c6b8>] i82975x_init_one+0x2e6/0x3e6 [i82975x_edac]
...

Fix bug reported at:
	https://bugzilla.redhat.com/show_bug.cgi?id=848149
And, very likely:
	https://bbs.archlinux.org/viewtopic.php?id=148033
	https://bugzilla.kernel.org/show_bug.cgi?id=47171

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-25 07:17:01 -02:00
Andrew Morton 168bfeef7b amd64_edac:__amd64_set_scrub_rate(): avoid overindexing scrubrates[]
If none of the elements in scrubrates[] matches, this loop will cause
__amd64_set_scrub_rate() to incorrectly use the n+1th element.

As the function is designed to use the final scrubrates[] element in the
case of no match, we can fix this bug by simply terminating the array
search at the n-1th element.

Boris: this code is fragile anyway, see here why:
http://marc.info/?l=linux-kernel&m=135102834131236&w=2

It will be rewritten more robustly soonish.

Reported-by: Denis Kirjanov <kirjanov@gmail.com>
Cc: stable@vger.kernel.org
Cc: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-10-24 16:13:27 +02:00
Linus Torvalds 5f3d2f2e1a Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc updates from Benjamin Herrenschmidt:
 "Some highlights in addition to the usual batch of fixes:

   - 64TB address space support for 64-bit processes by Aneesh Kumar

   - Gavin Shan did a major cleanup & re-organization of our EEH support
     code (IBM fancy PCI error handling & recovery infrastructure) which
     paves the way for supporting different platform backends, along
     with some rework of the PCIe code for the PowerNV platform in order
     to remove home made resource allocations and instead use the
     generic code (which is possible after some small improvements to it
     done by Gavin).

   - Uprobes support by Ananth N Mavinakayanahalli

   - A pile of embedded updates from Freescale folks, including new SoC
     and board supports, more KVM stuff including preparing for 64-bit
     BookE KVM support, ePAPR 1.1 updates, etc..."

Fixup trivial conflicts in drivers/scsi/ipr.c

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (146 commits)
  powerpc/iommu: Fix multiple issues with IOMMU pools code
  powerpc: Fix VMX fix for memcpy case
  driver/mtd:IFC NAND:Initialise internal SRAM before any write
  powerpc/fsl-pci: use 'Header Type' to identify PCIE mode
  powerpc/eeh: Don't release eeh_mutex in eeh_phb_pe_get
  powerpc: Remove tlb batching hack for nighthawk
  powerpc: Set paca->data_offset = 0 for boot cpu
  powerpc/perf: Sample only if SIAR-Valid bit is set in P7+
  powerpc/fsl-pci: fix warning when CONFIG_SWIOTLB is disabled
  powerpc/mpc85xx: Update interrupt handling for IFC controller
  powerpc/85xx: Enable USB support in p1023rds_defconfig
  powerpc/smp: Do not disable IPI interrupts during suspend
  powerpc/eeh: Fix crash on converting OF node to edev
  powerpc/eeh: Lock module while handling EEH event
  powerpc/kprobe: Don't emulate store when kprobe stwu r1
  powerpc/kprobe: Complete kprobe and migrate exception frame
  powerpc/kprobe: Introduce a new thread flag
  powerpc: Remove unused __get_user64() and __put_user64()
  powerpc/eeh: Global mutex to protect PE tree
  powerpc/eeh: Remove EEH PE for normal PCI hotplug
  ...
2012-10-06 03:16:12 +09:00
Linus Torvalds 033d9959ed Merge branch 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue changes from Tejun Heo:
 "This is workqueue updates for v3.7-rc1.  A lot of activities this
  round including considerable API and behavior cleanups.

   * delayed_work combines a timer and a work item.  The handling of the
     timer part has always been a bit clunky leading to confusing
     cancelation API with weird corner-case behaviors.  delayed_work is
     updated to use new IRQ safe timer and cancelation now works as
     expected.

   * Another deficiency of delayed_work was lack of the counterpart of
     mod_timer() which led to cancel+queue combinations or open-coded
     timer+work usages.  mod_delayed_work[_on]() are added.

     These two delayed_work changes make delayed_work provide interface
     and behave like timer which is executed with process context.

   * A work item could be executed concurrently on multiple CPUs, which
     is rather unintuitive and made flush_work() behavior confusing and
     half-broken under certain circumstances.  This problem doesn't
     exist for non-reentrant workqueues.  While non-reentrancy check
     isn't free, the overhead is incurred only when a work item bounces
     across different CPUs and even in simulated pathological scenario
     the overhead isn't too high.

     All workqueues are made non-reentrant.  This removes the
     distinction between flush_[delayed_]work() and
     flush_[delayed_]_work_sync().  The former is now as strong as the
     latter and the specified work item is guaranteed to have finished
     execution of any previous queueing on return.

   * In addition to the various bug fixes, Lai redid and simplified CPU
     hotplug handling significantly.

   * Joonsoo introduced system_highpri_wq and used it during CPU
     hotplug.

  There are two merge commits - one to pull in IRQ safe timer from
  tip/timers/core and the other to pull in CPU hotplug fixes from
  wq/for-3.6-fixes as Lai's hotplug restructuring depended on them."

Fixed a number of trivial conflicts, but the more interesting conflicts
were silent ones where the deprecated interfaces had been used by new
code in the merge window, and thus didn't cause any real data conflicts.

Tejun pointed out a few of them, I fixed a couple more.

* 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (46 commits)
  workqueue: remove spurious WARN_ON_ONCE(in_irq()) from try_to_grab_pending()
  workqueue: use cwq_set_max_active() helper for workqueue_set_max_active()
  workqueue: introduce cwq_set_max_active() helper for thaw_workqueues()
  workqueue: remove @delayed from cwq_dec_nr_in_flight()
  workqueue: fix possible stall on try_to_grab_pending() of a delayed work item
  workqueue: use hotcpu_notifier() for workqueue_cpu_down_callback()
  workqueue: use __cpuinit instead of __devinit for cpu callbacks
  workqueue: rename manager_mutex to assoc_mutex
  workqueue: WORKER_REBIND is no longer necessary for idle rebinding
  workqueue: WORKER_REBIND is no longer necessary for busy rebinding
  workqueue: reimplement idle worker rebinding
  workqueue: deprecate __cancel_delayed_work()
  workqueue: reimplement cancel_delayed_work() using try_to_grab_pending()
  workqueue: use mod_delayed_work() instead of __cancel + queue
  workqueue: use irqsafe timer for delayed_work
  workqueue: clean up delayed_work initializers and add missing one
  workqueue: make deferrable delayed_work initializer names consistent
  workqueue: cosmetic whitespace updates for macro definitions
  workqueue: deprecate system_nrt[_freezable]_wq
  workqueue: deprecate flush[_delayed]_work_sync()
  ...
2012-10-02 09:54:49 -07:00
Mauro Carvalho Chehab deb09ddaff sb_edac: Avoid overflow errors at memory size calculation
Sandy bridge EDAC is calculating the memory size with overflow.
Basically, the size field and the integer calculation is using 32 bits.
More bits are needed, when the DIMM memories have high density.

The net result is that memories are improperly reported there, when
high-density DIMMs are used:

EDAC DEBUG: in drivers/edac/sb_edac.c, line at 591: mc#0: channel 0, dimm 0, -16384 Mb (-4194304 pages) bank: 8, rank: 2, row: 0x10000, col: 0x800
EDAC DEBUG: in drivers/edac/sb_edac.c, line at 591: mc#0: channel 1, dimm 0, -16384 Mb (-4194304 pages) bank: 8, rank: 2, row: 0x10000, col: 0x800

As the number of pages value is handled at the EDAC core as unsigned
ints, the driver shows the 16 GB memories at sysfs interface as 16760832
MB! The fix is simple: calculate the number of pages as unsigned 64-bits
integer.

After the patch, the memory size (16 GB) is properly detected:

EDAC DEBUG: in drivers/edac/sb_edac.c, line at 592: mc#0: channel 0, dimm 0, 16384 Mb (4194304 pages) bank: 8, rank: 2, row: 0x10000, col: 0x800
EDAC DEBUG: in drivers/edac/sb_edac.c, line at 592: mc#0: channel 1, dimm 0, 16384 Mb (4194304 pages) bank: 8, rank: 2, row: 0x10000, col: 0x800

Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-25 07:38:20 -03:00
Mauro Carvalho Chehab b70f833377 i5000: Fix the memory size calculation with 2R memories
When 2R memories are found, the memory size should be multiplied
by two, otherwise, it will report half of the memory size:

       +-----------------------------------------------+
       |                      mc0                      |
       |        branch0        |        branch1        |
       | channel0  | channel1  | channel0  | channel1  |
-------+-----------------------------------------------+
slot3: |     0 MB  |     0 MB  |     0 MB  |     0 MB  |
slot2: |     0 MB  |     0 MB  |     0 MB  |     0 MB  |
-------+-----------------------------------------------+
slot1: |     0 MB  |     0 MB  |     0 MB  |     0 MB  |
slot0: |  1024 MB  |  1024 MB  |  1024 MB  |  1024 MB  |
-------+-----------------------------------------------+

(the above machine have 4 x 2GB 2R memories)

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-25 07:38:19 -03:00
Mauro Carvalho Chehab 582a899622 i3200_edac: Fix memory rank size
commit a895bf8b1e incorrectly
changed the logic that fills the memory bank size. Fix it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-25 07:32:33 -03:00
Shaun Ruffell faa2ad09c0 edac_mc: edac_mc_free() cannot assume mem_ctl_info is registered in sysfs.
Fix potential NULL pointer dereference in edac_unregister_sysfs() on
system boot introduced in 3.6-rc1.

Since commit 7a623c039 ("edac: rewrite the sysfs code to use struct
device") edac_mc_alloc() no longer initializes embedded kobjects in
struct mem_ctl_info.  Therefore edac_mc_free() can no longer simply
decrement a kobject reference count to free the allocated memory unless
the memory controller driver module had also called edac_mc_add_mc().

Now edac_mc_free() will check if the newly embedded struct device has
been registered with sysfs before using either the standard device
release functions or freeing the data structures itself with logic
pulled out of the error path of edac_mc_alloc().

The BUG this patch resolves for me:

  BUG: unable to handle kernel NULL pointer dereference at   (null)
  EIP is at __wake_up_common+0x1a/0x6a
  Process modprobe (pid: 933, ti=f3dc6000 task=f3db9520 task.ti=f3dc6000)
  Call Trace:
    complete_all+0x3f/0x50
    device_pm_remove+0x23/0xa2
    device_del+0x34/0x142
    edac_unregister_sysfs+0x3b/0x5c [edac_core]
    edac_mc_free+0x29/0x2f [edac_core]
    e7xxx_probe1+0x268/0x311 [e7xxx_edac]
    e7xxx_init_one+0x56/0x61 [e7xxx_edac]
    local_pci_probe+0x13/0x15
  ...

Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-09-23 14:46:40 -07:00
Fengguang Wu ef6e7816b4 edac_mc: fix messy kfree calls in the error path
coccinelle warns about:

+ drivers/edac/edac_mc.c:429:9-23: ERROR: reference preceded by free on line 429

   421         if (mci->csrows) {
 > 422                 for (chn = 0; chn < tot_channels; chn++) {
   423                         csr = mci->csrows[chn];
   424                         if (csr) {
 > 425                                 for (chn = 0; chn < tot_channels; chn++)
   426                                          kfree(csr->channels[chn]);
   427                                  kfree(csr);
   428                          }
 > 429                          kfree(mci->csrows[i]);
   430                  }
   431                  kfree(mci->csrows);
   432          }

and that code block seem to mess things up in several ways (double free, memory
leak, out-of-bound reads etc.):

L422: The iterator "chn" and bound "tot_channels" are totally wrong. Should be
      "row" and "tot_csrows" respectively. Which means either memory leak, or
      out-of-bound reads (which if does not trigger an immediate page fault
      error, will further lead to kfree() on random addresses).

L425: The inner loop is reusing the same iterator "chn" as the outer loop,
      which could lead to premature end of the outer loop, and hence memory leak.

L429: The array index 'i' in mci->csrows[i] is a temporary value used in
      previous loops, and won't change at all in the current loop. Which
      means either out-of-bound read and possibly kfree(random number), or the
      same mci->csrows[i] get freed once and again, and possibly double free
      for the kfree(csr) in L427.

L426/L427: a kfree(csr->channels) is needed in between to avoid leaking the memory.

The buggy code was introduced by commit de3910eb ("edac: change the mem
allocation scheme to make Documentation/kobject.txt happy") in the 3.6-rc1
merge window. Fix it by freeing up resources in this order:

  free csrows[i]->channels[j]
  free csrows[i]->channels
  free csrows[i]
  free csrows

CC: Mauro Carvalho Chehab <mchehab@redhat.com>
CC: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-09-23 14:45:26 -07:00
Jia Hongtao 905e75c46d powerpc/fsl-pci: Unify pci/pcie initialization code
We unified the Freescale pci/pcie initialization by changing the fsl_pci
to a platform driver. In previous PCI code architecture the initialization
routine is called at board_setup_arch stage. Now the initialization is done
in probe function which is architectural better. Also It's convenient for
adding PM support for PCI controller in later patch.

Now we registered pci controllers as platform devices. So we combine two
initialization code as one platform driver.

Signed-off-by: Jia Hongtao <B38951@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-09-12 14:57:12 -05:00
Tejun Heo 41f63c5359 workqueue: use mod_delayed_work() instead of cancel + queue
Convert delayed_work users doing cancel_delayed_work() followed by
queue_delayed_work() to mod_delayed_work().

Most conversions are straight-forward.  Ones worth mentioning are,

* drivers/edac/edac_mc.c: edac_mc_workq_setup() converted to always
  use mod_delayed_work() and cancel loop in
  edac_mc_reset_delay_period() is dropped.

* drivers/platform/x86/thinkpad_acpi.c: No need to remember whether
  watchdog is active or not.  @fan_watchdog_active and related code
  dropped.

* drivers/power/charger-manager.c: Seemingly a lot of
  delayed_work_pending() abuse going on here.
  [delayed_]work_pending() are unsynchronized and racy when used like
  this.  I converted one instance in fullbatt_handler().  Please
  conver the rest so that it invokes workqueue APIs for the intended
  target state rather than trying to game work item pending state
  transitions.  e.g. if timer should be modified - call
  mod_delayed_work(), canceled - call cancel_delayed_work[_sync]().

* drivers/thermal/thermal_sys.c: thermal_zone_device_set_polling()
  simplified.  Note that round_jiffies() calls in this function are
  meaningless.  round_jiffies() work on absolute jiffies not delta
  delay used by delayed_work.

v2: Tomi pointed out that __cancel_delayed_work() users can't be
    safely converted to mod_delayed_work().  They could be calling it
    from irq context and if that happens while delayed_work_timer_fn()
    is running, it could deadlock.  __cancel_delayed_work() users are
    dropped.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Roland Dreier <roland@kernel.org>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <len.brown@intel.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Johannes Berg <johannes@sipsolutions.net>
2012-08-13 16:27:37 -07:00
Mauro Carvalho Chehab c2078e4c91 Merge branch 'devel'
* devel: (33 commits)
  edac i5000, i5400: fix pointer math in i5000_get_mc_regs()
  edac: allow specifying the error count with fake_inject
  edac: add support for Calxeda highbank L2 cache ecc
  edac: add support for Calxeda highbank memory controller
  edac: create top-level debugfs directory
  sb_edac: properly handle error count
  i7core_edac: properly handle error count
  edac: edac_mc_handle_error(): add an error_count parameter
  edac: remove arch-specific parameter for the error handler
  amd64_edac: Don't pass driver name as an error parameter
  edac_mc: check for allocation failure in edac_mc_alloc()
  edac: Increase version to 3.0.0
  edac_mc: Cleanup per-dimm_info debug messages
  edac: Convert debugfX to edac_dbg(X,
  edac: Use more normal debugging macro style
  edac: Don't add __func__ or __FILE__ for debugf[0-9] msgs
  Edac: Add ABI Documentation for the new device nodes
  edac: move documentation ABI to ABI/testing/sysfs-devices-edac
  i7core_edac: change the mem allocation scheme to make Documentation/kobject.txt happy
  edac: change the mem allocation scheme to make Documentation/kobject.txt happy
  ...
2012-07-29 21:11:05 -03:00
Dan Carpenter f58d0dee07 edac i5000, i5400: fix pointer math in i5000_get_mc_regs()
"pvt->ambase" is a u64 datatype.  The intent here is to fill the first
half in the first call to pci_read_config_dword() and the other half in
the second.  Unfortunately the pointer math is wrong so we set the wrong
data.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-27 09:08:40 -03:00
Mauro Carvalho Chehab 38ced28b21 edac: allow specifying the error count with fake_inject
In order to test if the error counters are properly incremented,
add a way to specify how many errors were generated by a trace.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-27 09:01:30 -03:00
Rob Herring 69154d0698 edac: add support for Calxeda highbank L2 cache ecc
Add support for L2 ECC on Calxeda highbank platform.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-27 09:01:29 -03:00
Rob Herring a1b01edb27 edac: add support for Calxeda highbank memory controller
Add support for memory controller on Calxeda Highbank platforms. Highbank
platforms support a single 4GB mini-DIMM with 1-bit correction and 2-bit
detection.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-27 09:00:57 -03:00
Rob Herring e7930ba49e edac: create top-level debugfs directory
Create a single, top-level "edac" directory for debugfs. An "mc[0-N]"
directory is then created for each memory controller. Individual drivers
can create additional entries such as h/w error injection control.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-12 12:15:49 -03:00
Mauro Carvalho Chehab c10538396b sb_edac: properly handle error count
Instead of reporting the error count via driver-specific details,
use the new way provided by edac_mc_handle_error.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-12 12:15:49 -03:00
Mauro Carvalho Chehab 00d1833927 i7core_edac: properly handle error count
Instead of generating a burst of errors or reporting the error
count via driver-specific details, use the new way provided by
edac_mc_handle_error.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-12 12:15:48 -03:00
Mauro Carvalho Chehab 9eb07a7fb8 edac: edac_mc_handle_error(): add an error_count parameter
In order to avoid loosing error events, it is desirable to group
error events together and generate a single trace for several identical
errors.

The trace API already allows reporting multiple errors. Change the
handle_error function to also allow that.

The changes at the drivers were made by this small script:

	$file .=$_ while (<>);
	$file =~ s/(edac_mc_handle_error)\s*\(([^\,]+)\,([^\,]+)\,/$1($2,$3, 1,/g;
	print $file;

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-12 12:15:47 -03:00
Mauro Carvalho Chehab 03f7eae80f edac: remove arch-specific parameter for the error handler
Remove the arch-dependent parameter, as it were not used,
as the MCE tracepoint weren't implemented. It probably doesn't
make sense to have an MCE-specific tracepoint, as this will
cost more bytes at the tracepoint, and tracepoint is not free.

The changes at the EDAC drivers were done by this small perl script:

	$file .=$_ while (<>);
	$file =~ s/(edac_mc_handle_error)\s*\(([^\;]+)\,([^\,\)]+)\s*\)/$1($2)/g;
	print $file;

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:52 -03:00
Mauro Carvalho Chehab 075f30901e amd64_edac: Don't pass driver name as an error parameter
The EDAC driver name doesn't help to handle EDAC errors. So,
remove it from the EDAC error messages, preserving only the
error_message.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:51 -03:00
Dan Carpenter 08a4a13690 edac_mc: check for allocation failure in edac_mc_alloc()
Add a check here for if kzalloc() failed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:51 -03:00
Mauro Carvalho Chehab 5156a5f4e0 edac: Increase version to 3.0.0
There were lots of changes introduced to justify renaming it to
3.0.0:

  - EDAC core were redesigned to represent all types of
    memory controllers;

  - EDAC API were redesigned to properly represent the memory
    controller hierarchy;

  - a tracepoint-based API were added to report memory errors.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:50 -03:00
Mauro Carvalho Chehab 6e84d359b2 edac_mc: Cleanup per-dimm_info debug messages
The edac_mc_alloc() routine allocates one dimm_info device for all
possible memories, including the non-filled ones. The debug messages
there are somewhat confusing. So, cleans them, by moving the code
that prints the memory location to edac_mc, and using it on both
edac_mc_sysfs and edac_mc.

Also, only dumps information when DIMM/ranks are actually
filled.

After this patch, a dimm-based memory controller will print the debug
info as:

[ 1011.380027] EDAC DEBUG: edac_mc_dump_csrow: csrow->csrow_idx = 0
[ 1011.380029] EDAC DEBUG: edac_mc_dump_csrow:   csrow = ffff8801169be000
[ 1011.380031] EDAC DEBUG: edac_mc_dump_csrow:   csrow->first_page = 0x0
[ 1011.380032] EDAC DEBUG: edac_mc_dump_csrow:   csrow->last_page = 0x0
[ 1011.380034] EDAC DEBUG: edac_mc_dump_csrow:   csrow->page_mask = 0x0
[ 1011.380035] EDAC DEBUG: edac_mc_dump_csrow:   csrow->nr_channels = 3
[ 1011.380037] EDAC DEBUG: edac_mc_dump_csrow:   csrow->channels = ffff8801149c2840
[ 1011.380039] EDAC DEBUG: edac_mc_dump_csrow:   csrow->mci = ffff880117426000
[ 1011.380041] EDAC DEBUG: edac_mc_dump_channel:   channel->chan_idx = 0
[ 1011.380042] EDAC DEBUG: edac_mc_dump_channel:     channel = ffff8801149c2860
[ 1011.380044] EDAC DEBUG: edac_mc_dump_channel:     channel->csrow = ffff8801169be000
[ 1011.380046] EDAC DEBUG: edac_mc_dump_channel:     channel->dimm = ffff88010fe90400
...
[ 1011.380095] EDAC DEBUG: edac_mc_dump_dimm: dimm0: channel 0 slot 0 mapped as virtual row 0, chan 0
[ 1011.380097] EDAC DEBUG: edac_mc_dump_dimm:   dimm = ffff88010fe90400
[ 1011.380099] EDAC DEBUG: edac_mc_dump_dimm:   dimm->label = 'CPU#0Channel#0_DIMM#0'
[ 1011.380101] EDAC DEBUG: edac_mc_dump_dimm:   dimm->nr_pages = 0x40000
[ 1011.380103] EDAC DEBUG: edac_mc_dump_dimm:   dimm->grain = 8
[ 1011.380104] EDAC DEBUG: edac_mc_dump_dimm:   dimm->nr_pages = 0x40000
...

(a rank-based memory controller would print, instead of "dimm?", "rank?"
 on the above debug info)

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:49 -03:00
Joe Perches 956b9ba156 edac: Convert debugfX to edac_dbg(X,
Use a more common debugging style.

Remove __FILE__ uses, add missing newlines,
coalesce formats and align arguments.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:49 -03:00
Joe Perches 7e881856ee edac: Use more normal debugging macro style
Convert macros to a simpler style and enforce appropriate
format checking when not CONFIG_EDAC_DEBUG.

Use fmt and __VA_ARGS__, neaten macros.

Move some string arrays to the debugfx uses and remove the
now unnecessary CONFIG_EDAC_DEBUG variable block definitions.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:48 -03:00
Mauro Carvalho Chehab dd23cd6eb1 edac: Don't add __func__ or __FILE__ for debugf[0-9] msgs
The debug macro already adds that. Most of the work here was
made by this small script:

$f .=$_ while (<>);

$f =~ s/(debugf[0-9]\s*\(\s*)__FILE__\s*": /\1"/g;
$f =~ s/(debugf[0-9]\s*\(\s*)__FILE__\s*/\1/g;
$f =~ s/(debugf[0-9]\s*\(\s*)__FILE__\s*"MC: /\1"/g;

$f =~ s/(debugf[0-9]\s*\(\")\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+)__func__\s*\,\s*/\1\2/g;
$f =~ s/(debugf[0-9]\s*\(\")\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+),\s*__func__\s*\)/\1\2)/g;
$f =~ s/(debugf[0-9]\s*\(\"MC\:\s*)\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+)__func__\s*\,\s*/\1\2/g;
$f =~ s/(debugf[0-9]\s*\(\"MC\:\s*)\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+),\s*__func__\s*\)/\1\2)/g;

$f =~ s/\"MC\: \\n\"/"MC:\\n"/g;

print $f;

After running the script, manual cleanups were done to fix it the remaining
places.

While here, removed the __LINE__ on most places, as it doesn't actually give
useful info on most places.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:47 -03:00
Mauro Carvalho Chehab 356f0a3086 i7core_edac: change the mem allocation scheme to make Documentation/kobject.txt happy
Kernel kobjects have rigid rules: each container object should be
dynamically allocated, and can't be allocated into a single kmalloc.

EDAC never obeyed this rule: it has a single malloc function that
allocates all needed data into a single kzalloc.

As this is not accepted anymore, change the allocation schema of the
EDAC *_info structs to enforce this Kernel standard.

Cc: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:46 -03:00
Mauro Carvalho Chehab de3910eb79 edac: change the mem allocation scheme to make Documentation/kobject.txt happy
Kernel kobjects have rigid rules: each container object should be
dynamically allocated, and can't be allocated into a single kmalloc.

EDAC never obeyed this rule: it has a single malloc function that
allocates all needed data into a single kzalloc.

As this is not accepted anymore, change the allocation schema of the
EDAC *_info structs to enforce this Kernel standard.

Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Greg K H <gregkh@linuxfoundation.org>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Tim Small <tim@buttersideup.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Egor Martovetsky <egor@pasemi.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:45 -03:00
Mauro Carvalho Chehab e39f4ea9b0 edac: Only expose csrows/channels on legacy API if they're populated
This patch actually fixes a bug with the legacy API, where, at the
same csrow, some channels may have different DIMMs. This can happen
on FB-DIMM/RAMBUS and modern Intel controllers.

This is the case, for example, of Nehalem machines:

$ ./edac-ctl --layout
       +-----------------------------------+
       |                mc0                |
       | channel0  | channel1  | channel2  |
-------+-----------------------------------+
slot2: |     0 MB  |     0 MB  |     0 MB  |
slot1: |  1024 MB  |     0 MB  |     0 MB  |
slot0: |  1024 MB  |  1024 MB  |  1024 MB  |
-------+-----------------------------------+

Before this patch, non-filled memories were shown. Now, only what's
filled is there:

grep . /sys/devices/system/edac/mc/mc0/csrow*/ch?*
/sys/devices/system/edac/mc/mc0/csrow0/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow0/ch0_dimm_label:CPU#0Channel#0_DIMM#0
/sys/devices/system/edac/mc/mc0/csrow0/ch1_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow0/ch1_dimm_label:CPU#0Channel#0_DIMM#1
/sys/devices/system/edac/mc/mc0/csrow1/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow1/ch0_dimm_label:CPU#0Channel#1_DIMM#0
/sys/devices/system/edac/mc/mc0/csrow2/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow2/ch0_dimm_label:CPU#0Channel#2_DIMM#0

Thanks-to: Aristeu Rozanski Filho <arozansk@redhat.com>
Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:44 -03:00
Mauro Carvalho Chehab fd63312dfe edac: Move grain/dtype/edac_type calculus to be out of channel loop
The 3e7bddc changeset (edac: move dimm properties to struct memset_info)
moved the calculus inside a loop. However, at those stuff are common to
all channels, on several drivers, it is better to put the calculus
outside the loop, to optimize the code.

Reported-by: Aristeu Rozanski Filho <arozansk@redhat.com>
Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:44 -03:00
Mauro Carvalho Chehab 452a6bf955 edac: Add debufs nodes to allow doing fake error inject
Sometimes, it is useful to have a mechanism that generates fake
errors, in order to test the EDAC core code, and the userspace
tools.

Provide such mechanism by adding a few debugfs nodes.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:43 -03:00
Mauro Carvalho Chehab 8ad6c78a69 edac: add a sysfs node to report the maximum location for the system
The userspace tools need to know what's the maximum location on each
system, as it helps to create nice maps showing how the memory was
filled at the system.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:43 -03:00
Mauro Carvalho Chehab 1997471069 edac: add a new per-dimm API and make the old per-virtual-rank API obsolete
The old EDAC API is broken. It only works fine for systems manufatured
before 2005 and for AMD 64. The reason is that it forces all memory
controller drivers to discover rank info.

Also, it doesn't allow grouping the several ranks into a DIMM.

So, what almost all modern drivers do is to create a fake virtual-rank
information, and use it to cheat the EDAC core to accept the driver.

While this works if the user has enough time to discover what DIMM slot
corresponds to each "virtual-rank" information, it prevents EDAC usage
for users with less available time. It also makes life hard for vendors
that may want to provide a table with their motherboards to the userspace
tool (edac-utils) as each driver has its own logic for the virtual
mapping.

So, the old API should be removed, in favor of a more flexible API that
allows newer drivers to not lie to the EDAC core.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Josh Boyer <jwboyer@redhat.com>
Cc: Hui Wang <jason77.wang@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:42 -03:00
Mauro Carvalho Chehab d90c008963 edac: Get rid of the old kobj's from the edac mc code
Now that al users for the old kobj raw access are gone,
we can get rid of the legacy kobj-based structures and
data.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:41 -03:00
Mauro Carvalho Chehab 5c4cdb5ae7 i7core_edac: convert it to use struct device
Instead of relying on a complex logic inside the edac core to create
a "device tree-like" sysfs struct, just use device_add.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:41 -03:00
Mauro Carvalho Chehab c56087595f amd64_edac: convert sysfs logic to use struct device
Now that the EDAC core supports struct device, there's no sense
on having any logic at the EDAC core to simulate it. So, instead
of adding such logic there, change the logic at amd64_edac to
use it.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:40 -03:00
Mauro Carvalho Chehab ba004239e0 mpc85xx_edac: convert sysfs logic to use struct device
Now that the EDAC core supports struct device, there's no sense on
having any logic at the EDAC core to simulate it. So, instead of adding
such logic there, change the logic at mpc85xx_edac to use it

compile-tested only.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:39 -03:00
Mauro Carvalho Chehab 7a623c0390 edac: rewrite the sysfs code to use struct device
The EDAC subsystem uses the old struct sysdev approach,
creating all nodes using the raw sysfs API. This is bad,
as the API is deprecated.

As we'll be changing the EDAC API, let's first port the existing
code to struct device.

There's one drawback on this patch: driver-specific sysfs
nodes, used by mpc85xx_edac, amd64_edac and i7core_edac
 won't be created anymore. While it would be possible to
also port the device-specific code, that would mix kobj with
struct device, with is not recommended. Also, it is easier and nicer
to move the code to the drivers, instead, as the core can get rid
of some complex logic that just emulates what the device_add()
and device_create_file() already does.

The next patches will convert the driver-specific code to use
the device-specific calls. Then, the remaining bits of the old
sysfs API will be removed.

NOTE: a per-MC bus is required, otherwise devices with more than
one memory controller will hit a bug like the one below:

[  819.094946] EDAC DEBUG: find_mci_by_dev: find_mci_by_dev()
[  819.094948] EDAC DEBUG: edac_create_sysfs_mci_device: edac_create_sysfs_mci_device() idx=1
[  819.094952] EDAC DEBUG: edac_create_sysfs_mci_device: edac_create_sysfs_mci_device(): creating device mc1
[  819.094967] EDAC DEBUG: edac_create_sysfs_mci_device: edac_create_sysfs_mci_device creating dimm0, located at channel 0 slot 0
[  819.094984] ------------[ cut here ]------------
[  819.100142] WARNING: at fs/sysfs/dir.c:481 sysfs_add_one+0xc1/0xf0()
[  819.107282] Hardware name: S2600CP
[  819.111078] sysfs: cannot create duplicate filename '/bus/edac/devices/dimm0'
[  819.119062] Modules linked in: sb_edac(+) edac_core ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle iptable_filter ip_tables bridge stp llc sunrpc binfmt_misc dm_mirror dm_region_hash dm_log vhost_net macvtap macvlan tun kvm microcode pcspkr iTCO_wdt iTCO_vendor_support igb i2c_i801 i2c_core sg ioatdma dca sr_mod cdrom sd_mod crc_t10dif ahci libahci isci libsas libata scsi_transport_sas scsi_mod wmi dm_mod [last unloaded: scsi_wait_scan]
[  819.175748] Pid: 10902, comm: modprobe Not tainted 3.3.0-0.11.el7.v12.2.x86_64 #1
[  819.184113] Call Trace:
[  819.186868]  [<ffffffff8105adaf>] warn_slowpath_common+0x7f/0xc0
[  819.193573]  [<ffffffff8105aea6>] warn_slowpath_fmt+0x46/0x50
[  819.200000]  [<ffffffff811f53d1>] sysfs_add_one+0xc1/0xf0
[  819.206025]  [<ffffffff811f5cf5>] sysfs_do_create_link+0x135/0x220
[  819.212944]  [<ffffffff811f7023>] ? sysfs_create_group+0x13/0x20
[  819.219656]  [<ffffffff811f5df3>] sysfs_create_link+0x13/0x20
[  819.226109]  [<ffffffff813b04f6>] bus_add_device+0xe6/0x1b0
[  819.232350]  [<ffffffff813ae7cb>] device_add+0x2db/0x460
[  819.238300]  [<ffffffffa0325634>] edac_create_dimm_object+0x84/0xf0 [edac_core]
[  819.246460]  [<ffffffffa0325e18>] edac_create_sysfs_mci_device+0xe8/0x290 [edac_core]
[  819.255215]  [<ffffffffa0322e2a>] edac_mc_add_mc+0x5a/0x2c0 [edac_core]
[  819.262611]  [<ffffffffa03412df>] sbridge_register_mci+0x1bc/0x279 [sb_edac]
[  819.270493]  [<ffffffffa03417a3>] sbridge_probe+0xef/0x175 [sb_edac]
[  819.277630]  [<ffffffff813ba4e8>] ? pm_runtime_enable+0x58/0x90
[  819.284268]  [<ffffffff812f430c>] local_pci_probe+0x5c/0xd0
[  819.290508]  [<ffffffff812f5ba1>] __pci_device_probe+0xf1/0x100
[  819.297117]  [<ffffffff812f5bea>] pci_device_probe+0x3a/0x60
[  819.303457]  [<ffffffff813b1003>] really_probe+0x73/0x270
[  819.309496]  [<ffffffff813b138e>] driver_probe_device+0x4e/0xb0
[  819.316104]  [<ffffffff813b149b>] __driver_attach+0xab/0xb0
[  819.322337]  [<ffffffff813b13f0>] ? driver_probe_device+0xb0/0xb0
[  819.329151]  [<ffffffff813af5d6>] bus_for_each_dev+0x56/0x90
[  819.335489]  [<ffffffff813b0d7e>] driver_attach+0x1e/0x20
[  819.341534]  [<ffffffff813b0980>] bus_add_driver+0x1b0/0x2a0
[  819.347884]  [<ffffffffa0347000>] ? 0xffffffffa0346fff
[  819.353641]  [<ffffffff813b19f6>] driver_register+0x76/0x140
[  819.359980]  [<ffffffff8159f18b>] ? printk+0x51/0x53
[  819.365524]  [<ffffffffa0347000>] ? 0xffffffffa0346fff
[  819.371291]  [<ffffffff812f5896>] __pci_register_driver+0x56/0xd0
[  819.378096]  [<ffffffffa0347054>] sbridge_init+0x54/0x1000 [sb_edac]
[  819.385231]  [<ffffffff8100203f>] do_one_initcall+0x3f/0x170
[  819.391577]  [<ffffffff810bcd2e>] sys_init_module+0xbe/0x230
[  819.397926]  [<ffffffff815bb529>] system_call_fastpath+0x16/0x1b
[  819.404633] ---[ end trace 1654fdd39556689f ]---

This happens because the bus is not being properly initialized.
Instead of putting the memory sub-devices inside the memory controller,
it is putting everything under the same directory:

$ tree /sys/bus/edac/
/sys/bus/edac/
├── devices
│   ├── all_channel_counts -> ../../../devices/system/edac/mc/mc0/all_channel_counts
│   ├── csrow0 -> ../../../devices/system/edac/mc/mc0/csrow0
│   ├── csrow1 -> ../../../devices/system/edac/mc/mc0/csrow1
│   ├── csrow2 -> ../../../devices/system/edac/mc/mc0/csrow2
│   ├── dimm0 -> ../../../devices/system/edac/mc/mc0/dimm0
│   ├── dimm1 -> ../../../devices/system/edac/mc/mc0/dimm1
│   ├── dimm3 -> ../../../devices/system/edac/mc/mc0/dimm3
│   ├── dimm6 -> ../../../devices/system/edac/mc/mc0/dimm6
│   ├── inject_addrmatch -> ../../../devices/system/edac/mc/mc0/inject_addrmatch
│   ├── mc -> ../../../devices/system/edac/mc
│   └── mc0 -> ../../../devices/system/edac/mc/mc0
├── drivers
├── drivers_autoprobe
├── drivers_probe
└── uevent

On a multi-memory controller system, the names "csrow%d" and "dimm%d"
should be under "mc%d", and not at the main hierarchy level.

So, we need to create a per-MC bus, in order to have its own namespace.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Greg K H <gregkh@linuxfoundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:30 -03:00
Chris Metcalf 8447c4d15e edac: Do alignment logic properly in edac_align_ptr()
The logic was checking the sizeof the structure being allocated to
determine whether an alignment fixup was required.  This isn't right;
what we actually care about is the alignment of the actual pointer that's
about to be returned.  This became an issue recently because struct
edac_mc_layer has a size that is not zero modulo eight, so we were
taking the correctly-aligned pointer and forcing it to be misaligned.
On Tile this caused an alignment exception.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 12:43:16 -03:00
Mauro Carvalho Chehab fd687502dc edac: Rename the parent dev to pdev
As EDAC doesn't use struct device itself, it created a parent dev
pointer called as "pdev".  Now that we'll be converting it to use
struct device, instead of struct devsys, this needs to be fixed.

No functional changes.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Cc: Tim Small <tim@buttersideup.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Egor Martovetsky <egor@pasemi.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Joe Perches <joe@perches.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: Josh Boyer <jwboyer@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 11:56:06 -03:00
Mauro Carvalho Chehab 53f2d02898 RAS: Add a tracepoint for reporting memory controller events
Add a new tracepoint-based hardware events report method for
reporting Memory Controller events.

Part of the description bellow is shamelessly copied from Tony
Luck's notes about the Hardware Error BoF during LPC 2010 [1].
Tony, thanks for your notes and discussions to generate the
h/w error reporting requirements.

[1] http://lwn.net/Articles/416669/

    We have several subsystems & methods for reporting hardware errors:

    1) EDAC ("Error Detection and Correction").  In its original form
    this consisted of a platform specific driver that read topology
    information and error counts from chipset registers and reported
    the results via a sysfs interface.

    2) mcelog - x86 specific decoding of machine check bank registers
    reporting in binary form via /dev/mcelog. Recent additions make use
    of the APEI extensions that were documented in version 4.0a of the
    ACPI specification to acquire more information about errors without
    having to rely reading chipset registers directly. A user level
    programs decodes into somewhat human readable format.

    3) drivers/edac/mce_amd.c - this driver hooks into the mcelog path and
    decodes errors reported via machine check bank registers in AMD
    processors to the console log using printk();

    Each of these mechanisms has a band of followers ... and none
    of them appear to meet all the needs of all users.

As part of a RAS subsystem, let's encapsulate the memory error hardware
events into a trace facility.

The tracepoint printk will be displayed like:

mc_event: [quant] (Corrected|Uncorrected|Fatal) error:[error msg] on [label] ([location] [edac_mc detail] [driver_detail]

Where:
       	[quant] is the quantity of errors
	[error msg] is the driver-specific error message
		    (e. g. "memory read", "bus error", ...);
	[location] is the location in terms of memory controller and
		   branch/channel/slot, channel/slot or csrow/channel;
	[label] is the memory stick label;
	[edac_mc detail] describes the address location of the error
			 and the syndrome;
	[driver detail] is driver-specifig error message details,
			when needed/provided (e. g. "area:DMA", ...)

For example:

mc_event: 1 Corrected error:memory read on memory stick DIMM_1A (mc:0 location:0:0:0 page:0x586b6e offset:0xa66 grain:32 syndrome:0x0 area:DMA)

Of course, any userspace tools meant to handle errors should not parse
the above data. They should, instead, use the binary fields provided by
the tracepoint, mapping them directly into their Management Information
Base.

NOTE: The original patch was providing an additional mechanism for
MCA-based trace events that also contained MCA error register data.
However, as no agreement was reached so far for the MCA-based trace
events, for now, let's add events only for memory errors.
A latter patch is planned to change the tracepoint, for those types
of event.

Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 11:55:52 -03:00
Kim Phillips b9bc5ddb1b mpc85xx_edac: fix error: too few arguments to function 'edac_mc_alloc'
commit ca0907b "edac: Remove the legacy EDAC ABI" broke mpc85xx_edac
in the following manner:

mpc85xx_edac.c:983:35: error: too few arguments to function 'edac_mc_alloc'

this patch puts back the missing 'layers' argument.

[mchehab@redhat.com: As Ben sent a similar fix, I added his SOB on this patch]
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 11:49:51 -03:00
Chen Gong 2cbb587d3b edac: fix the error about memory type detection on SandyBridge
On SandyBridge, DDRIOA(Dev: 17 Func: 0 Offset: 328) is used
to detect whether DIMM is RDIMM/LRDIMM, not TA(Dev: 15 Func: 0).

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 11:49:51 -03:00
Chen Gong e35fca4791 edac: avoid mce decoding crash after edac driver unloaded
Some edac drivers register themselves as mce decoders via
notifier_chain. But in current notifier_chain implementation logic,
it doesn't accept same notifier registered twice. If so, it will be
wrong when adding/removing the element from the list. For example,
on one SandyBridge platform, remove module sb_edac and then trigger
one error, it will hit oops because it has no mce decoder registered
but related notifier_chain still points to an invalid callback
function. Here is an example:

Call Trace:
 [<ffffffff8150ef6a>] atomic_notifier_call_chain+0x1a/0x20
 [<ffffffff8102b936>] mce_log+0x46/0x180
 [<ffffffff8102eaea>] apei_mce_report_mem_error+0x4a/0x60
 [<ffffffff812e19d2>] ghes_do_proc+0x192/0x210
 [<ffffffff812e2066>] ghes_proc+0x46/0x70
 [<ffffffff812e20d8>] ghes_notify_sci+0x48/0x80
 [<ffffffff8150ef05>] notifier_call_chain+0x55/0x80
 [<ffffffff81076f1a>] __blocking_notifier_call_chain+0x5a/0x80
 [<ffffffff812aea11>] ? acpi_os_wait_events_complete+0x23/0x23
 [<ffffffff81076f56>] blocking_notifier_call_chain+0x16/0x20
 [<ffffffff812ddc4d>] acpi_hed_notify+0x19/0x1b
 [<ffffffff812b16bd>] acpi_device_notify+0x19/0x1b
 [<ffffffff812beb38>] acpi_ev_notify_dispatch+0x67/0x7f
 [<ffffffff812aea3a>] acpi_os_execute_deferred+0x29/0x36
 [<ffffffff81069dc2>] process_one_work+0x132/0x450
 [<ffffffff8106bbcb>] worker_thread+0x17b/0x3c0
 [<ffffffff8106ba50>] ? manage_workers+0x120/0x120
 [<ffffffff81070aee>] kthread+0x9e/0xb0
 [<ffffffff81514724>] kernel_thread_helper+0x4/0x10
 [<ffffffff81070a50>] ? kthread_freezable_should_stop+0x70/0x70
 [<ffffffff81514720>] ? gs_change+0x13/0x13
Code: f3 49 89 d4 45 85 ed 4d 89 c6 48 8b 0f 74 48 48 85 c9 75 17 eb 41
0f 1f 80 00 00 00 00 41 83 ed 01 4c 89 f9 74 22 4d 85 ff 74 1d <4c> 8b
79 08 4c 89 e2 48 89 de 48 89 cf ff 11 4d 85 f6 74 04 41
RIP  [<ffffffff8150eef6>] notifier_call_chain+0x46/0x80
 RSP <ffff88042868fb20>
CR2: ffffffffa01af838
---[ end trace 0100930068e73e6f ]---
BUG: unable to handle kernel paging request at fffffffffffffff8
IP: [<ffffffff810705b0>] kthread_data+0x10/0x20
PGD 1a0d067 PUD 1a0e067 PMD 0
Oops: 0000 [#2] SMP

Only i7core_edac and sb_edac have such issues because they have more
than one memory controller which means they have to register mce
decoder many times.

Cc: <stable@vger.kernel.org> # 3.2 and upper
Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 11:49:51 -03:00
H. Peter Anvin bbd771474e Merge branch 'x86/trampoline' into x86/urgent
x86/trampoline contains an urgent commit which is necessarily on a
newer baseline.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2012-05-30 12:11:32 -07:00
Ingo Molnar 403e1c5b74 Merge branch 'x86/mce' into x86/urgent
Merge in these fixlets.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-05-30 14:12:06 +02:00
Linus Torvalds 87a5af24e5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull EDAC internal API changes from Mauro Carvalho Chehab:
 "This changeset is the first part of a series of patches that fixes the
  EDAC sybsystem.  On this set, it changes the Kernel EDAC API in order
  to properly represent the Intel i3/i5/i7, Xeon 3xxx/5xxx/7xxx, and
  Intel E5-xxxx memory controllers.

  The EDAC core used to assume that:

       - the DRAM chip select pin is directly accessed by the memory
         controller

       - when multiple channels are used, they're all filled with the
         same type of memory.

  None of the above premises is true on Intel memory controllers since
  2002, when RAMBUS and FB-DIMMs were introduced, and Advanced Memory
  Buffer or by some similar technologies hides the direct access to the
  DRAM pins.

  So, the existing drivers for those chipsets had to lie to the EDAC
  core, in general telling that just one channel is filled.  That
  produces some hard to understand error messages like:

       EDAC MC0: CE row 3, channel 0, label "DIMM1": 1 Unknown error(s): memory read error on FATAL area : cpu=0 Err=0008:00c2 (ch=2), addr = 0xad1f73480 => socket=0, Channel=0(mask=2), rank=1

  The location information there (row3 channel 0) is completely bogus:
  it has no physical meaning, and are just some random values that the
  driver uses to talk with the EDAC core.  The error actually happened
  at CPU socket 0, channel 0, slot 1, but this is not reported anywhere,
  as the EDAC core doesn't know anything about the memory layout.  So,
  only advanced users that know how the EDAC driver works and that tests
  their systems to see how DIMMs are mapped can actually benefit for
  such error logs.

  This patch series fixes the error report logic, in order to allow the
  EDAC to expose the memory architecture used by them to the EDAC core.
  So, as the EDAC core now understands how the memory is organized, it
  can provide an useful report:

       EDAC MC0: CE memory read error on DIMM1 (channel:0 slot:1 page:0x364b1b offset:0x600 grain:32 syndrome:0x0 - count:1 area:DRAM err_code:0001:0090 socket:0 channel_mask:1 rank:4)

  The location of the DIMM where the error happened is reported by "MC0"
  (cpu socket #0), at "channel:0 slot:1" location, and matches the
  physical location of the DIMM.

  There are two remaining issues not covered by this patch series:

       - The EDAC sysfs API will still report bogus values.  So,
         userspace tools like edac-utils will still use the bogus data;

       - Add a new tracepoint-based way to get the binary information
         about the errors.

  Those are on a second series of patches (also at -next), but will
  probably miss the train for 3.5, due to the slow review process."

Fix up trivial conflict (due to spelling correction of removed code) in
drivers/edac/edac_device.c

* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (42 commits)
  i7core: fix ranks information at the per-channel struct
  i5000: Fix the fatal error handling
  i5100_edac: Fix a warning when compiled with 32 bits
  i82975x_edac: Test nr_pages earlier to save a few CPU cycles
  e752x_edac: provide more info about how DIMMS/ranks are mapped
  i5000_edac: Fix the logic that retrieves memory information
  i5400_edac: improve debug messages to better represent the filled memory
  edac: Cleanup the logs for i7core and sb edac drivers
  edac: Initialize the dimm label with the known information
  edac: Remove the legacy EDAC ABI
  x38_edac: convert driver to use the new edac ABI
  tile_edac: convert driver to use the new edac ABI
  sb_edac: convert driver to use the new edac ABI
  r82600_edac: convert driver to use the new edac ABI
  ppc4xx_edac: convert driver to use the new edac ABI
  pasemi_edac: convert driver to use the new edac ABI
  mv64x60_edac: convert driver to use the new edac ABI
  mpc85xx_edac: convert driver to use the new edac ABI
  i82975x_edac: convert driver to use the new edac ABI
  i82875p_edac: convert driver to use the new edac ABI
  ...
2012-05-29 18:32:37 -07:00
Mauro Carvalho Chehab 0bf09e829d i7core: fix ranks information at the per-channel struct
There is a flag at the per-channel struct that indicates if there are
any 4R dimm on it. The way the presence of this flag were reported
is not ok, as it might give the false idea that the channel were filled
with 2R memories:

[  580.588701] EDAC DEBUG: get_dimm_config: Ch1 phy rd1, wr1 (0x063f7431): 2 ranks, UDIMMs
[  580.588704] EDAC DEBUG: get_dimm_config: 	dimm 0 1024 Mb offset: 0, bank: 8, rank: 1, row: 0x4000, col: 0x400

(in this case, just one 1R memory is filled on channel 1)

So, use a better way to represent the per-channel ranks information.
After the patch, it will show:

[ 2002.233978] EDAC DEBUG: get_dimm_config: Ch0 phy rd0, wr0 (0x063f7431): UDIMMs
[ 2002.233982] EDAC DEBUG: get_dimm_config: 	dimm 0 1024 Mb offset: 0, bank: 8, rank: 1, row: 0x4000, col: 0x400
[ 2002.233988] EDAC DEBUG: get_dimm_config: 	dimm 1 1024 Mb offset: 4, bank: 8, rank: 1, row: 0x4000, col: 0x400

(in this case, there isn't any 4R memories)

Reported-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:55 -03:00
Mauro Carvalho Chehab 486dfb1638 i5000: Fix the fatal error handling
The fatal error channel bits point to a single channel, and not
to a range of channels. Fix the code to properly report it,
instead of printing messages like:
	kernel: EDAC MC0: INTERNAL ERROR: channel-b out of range (4 >= 4)

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:54 -03:00
Mauro Carvalho Chehab 9f70d08a4c i5100_edac: Fix a warning when compiled with 32 bits
drivers/edac/i5100_edac.c: In function ‘i5100_init_csrows’:
drivers/edac/i5100_edac.c:862:3: warning: format ‘%zd’ expects argument of type ‘signed size_t’, but argument 5 has type ‘long unsigned int’ [-Wformat]

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:54 -03:00
Mauro Carvalho Chehab 36683aab90 i82975x_edac: Test nr_pages earlier to save a few CPU cycles
Avoid test nr_pages twice, and initializing some data that won't
be used.

Cleanup patch only.

Reported-by: Aristeu Rozanski Filho <arozansk@redhat.com>
Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:53 -03:00
Mauro Carvalho Chehab 805afb6997 e752x_edac: provide more info about how DIMMS/ranks are mapped
No funtional changes here. Only the comments got updated.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:53 -03:00
Mauro Carvalho Chehab 64e1fdaf55 i5000_edac: Fix the logic that retrieves memory information
The logic there is broken: it basically creates two csrows for
each DIMM and assumes that all DIMM's are dual rank. Only one of
the csrows will contain the entire DIMM size. If single rank
memories are found, they'll be marked with 0 bytes.

The check if the AMB is present were also wrong.

Yet, as the error reports don't use the memory size in order to
credit an error to the right DIMM, that part of the driver seems
to work. That's why probably nobody detected the issue yet.

After this patch, the memory layout is now properly reported,
when debug mode is enabled, and the number of ranks per dimm is
now shown:

calculate_dimm_size: ----------------------------------------------------------
calculate_dimm_size: slot  3       0 MB   |    0 MB   |    0 MB   |    0 MB   |
calculate_dimm_size: slot  2       0 MB   |    0 MB   |    0 MB   |    0 MB   |
calculate_dimm_size: ----------------------------------------------------------
calculate_dimm_size: slot  1       0 MB   |    0 MB   |    0 MB   |    0 MB   |
calculate_dimm_size: slot  0     512 MB 1R|  512 MB 1R|  512 MB 1R|  512 MB 1R|
calculate_dimm_size: ----------------------------------------------------------
calculate_dimm_size:            channel 0 | channel 1 | channel 2 | channel 3 |
calculate_dimm_size:                   branch 0       |        branch 1       |

(1R above means that all memories on my test machine are single-ranked)

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:52 -03:00
Mauro Carvalho Chehab 68d086f89b i5400_edac: improve debug messages to better represent the filled memory
Improves the debug output message, in order to better represent the
memory controller hierarchy, when outputing the debug messages.

No functional changes when debug is disabled.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:51 -03:00
Mauro Carvalho Chehab e17a2f42a4 edac: Cleanup the logs for i7core and sb edac drivers
Remove some information that it is duplicated at the MCE log,
and don't have much usage for the error. Those data will be
added again, when creating a trace function that outputs both
memory errors and MCE fields.

Cc: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:51 -03:00
Mauro Carvalho Chehab 5926ff502f edac: Initialize the dimm label with the known information
While userspace doesn't fill the dimm labels, add there the dimm location,
as described by the used memory model. This could eventually match what
is described at the dmidecode, making easier for people to identify the
memory.

For example, on an Intel motherboard where the DMI table is reliable,
the first memory stick is described as:

Memory Device
	Array Handle: 0x0029
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 2048 MB
	Form Factor: DIMM
	Set: 1
	Locator: A1_DIMM0
	Bank Locator: A1_Node0_Channel0_Dimm0
	Type: <OUT OF SPEC>
	Type Detail: Synchronous
	Speed: 800 MHz
	Manufacturer: A1_Manufacturer0
	Serial Number: A1_SerNum0
	Asset Tag: A1_AssetTagNum0
	Part Number: A1_PartNum0

The memory named as "A1_DIMM0" is physically located at the first
memory controller (node 0), at channel 0, dimm slot 0.

After this patch, the memory label will be filled with:
	/sys/devices/system/edac/mc/csrow0/ch0_dimm_label:mc#0channel#0slot#0

And (after the new EDAC API patches) as:
	/sys/devices/system/edac/mc/mc0/dimm0/dimm_label:mc#0channel#0slot#0

So, even if the memory label is not initialized on userspace, an useful
information with the error location is filled there, expecially since
several systems/motherboards are provided with enough info to map from
channel/slot (or branch/channel/slot) into the DIMM label. So, letting the
EDAC core fill it by default is a good thing.

It should noticed that, as the label filling happens at the
edac_mc_alloc(), drivers can override it to better describe the memories
(and some actually do it).

Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:50 -03:00
Mauro Carvalho Chehab ca0907b9e4 edac: Remove the legacy EDAC ABI
Now that all drivers got converted to use the new ABI, we can
drop the old one.

Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:50 -03:00
Mauro Carvalho Chehab e2acc357ee x38_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:49 -03:00
Mauro Carvalho Chehab 40467db770 tile_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:48 -03:00
Mauro Carvalho Chehab c36e3e7768 sb_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:48 -03:00
Mauro Carvalho Chehab 63b5d1d9aa r82600_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Tim Small <tim@buttersideup.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:47 -03:00
Mauro Carvalho Chehab 94d9337459 ppc4xx_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Josh Boyer <jwboyer@gmail.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:46 -03:00
Mauro Carvalho Chehab f34575aca9 pasemi_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Olof Johansson <olof@lixom.net>
Cc: Egor Martovetsky <egor@pasemi.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:46 -03:00
Mauro Carvalho Chehab a583ac6ca8 mv64x60_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:45 -03:00
Mauro Carvalho Chehab ad4d6e2311 mpc85xx_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:45 -03:00
Mauro Carvalho Chehab 705213580b i82975x_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:44 -03:00
Mauro Carvalho Chehab 0a8a9ac9ca i82875p_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:43 -03:00
Mauro Carvalho Chehab 84c3a68408 i82860_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:43 -03:00
Mauro Carvalho Chehab 40f562b191 i82443bxgx_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Tim Small <tim@buttersideup.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:42 -03:00
Mauro Carvalho Chehab 0975c16f4f i7core_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:42 -03:00
Mauro Carvalho Chehab 70e2a8379b i7300_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:41 -03:00
Mauro Carvalho Chehab 296da591ea i5400_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:11:02 -03:00
Mauro Carvalho Chehab d1afaa0a6e i5100_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:11:01 -03:00
Mauro Carvalho Chehab 702df64053 i5000_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:11:01 -03:00
Mauro Carvalho Chehab 95b93287c6 i3200_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:11:01 -03:00
Mauro Carvalho Chehab 884906f197 i3000_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Jason Uhlenkott <juhlenko@akamai.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:11:01 -03:00
Mauro Carvalho Chehab 30ac440681 e7xxx_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:11:01 -03:00
Mauro Carvalho Chehab ce11ce1710 e752x_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Mark Gross <mark.gross@intel.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:11:00 -03:00
Mauro Carvalho Chehab df62b1e663 cpc925_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:11:00 -03:00
Mauro Carvalho Chehab 6458fc08b6 cell_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:11:00 -03:00
Mauro Carvalho Chehab d8c34af4d0 amd76x_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:11:00 -03:00
Mauro Carvalho Chehab ab5a503cb5 amd64_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:10:59 -03:00
Mauro Carvalho Chehab 4275be6355 edac: Change internal representation to work with layers
Change the EDAC internal representation to work with non-csrow
based memory controllers.

There are lots of those memory controllers nowadays, and more
are coming. So, the EDAC internal representation needs to be
changed, in order to work with those memory controllers, while
preserving backward compatibility with the old ones.

The edac core was written with the idea that memory controllers
are able to directly access csrows.

This is not true for FB-DIMM and RAMBUS memory controllers.

Also, some recent advanced memory controllers don't present a per-csrows
view. Instead, they view memories as DIMMs, instead of ranks.

So, change the allocation and error report routines to allow
them to work with all types of architectures.

This will allow the removal of several hacks with FB-DIMM and RAMBUS
memory controllers.

Also, several tests were done on different platforms using different
x86 drivers.

TODO: a multi-rank DIMMs are currently represented by multiple DIMM
entries in struct dimm_info. That means that changing a label for one
rank won't change the same label for the other ranks at the same DIMM.
This bug is present since the beginning of the EDAC, so it is not a big
deal. However, on several drivers, it is possible to fix this issue, but
it should be a per-driver fix, as the csrow => DIMM arrangement may not
be equal for all. So, don't try to fix it here yet.

I tried to make this patch as short as possible, preceding it with
several other patches that simplified the logic here. Yet, as the
internal API changes, all drivers need changes. The changes are
generally bigger in the drivers for FB-DIMMs.

Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Cc: Tim Small <tim@buttersideup.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Egor Martovetsky <egor@pasemi.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Joe Perches <joe@perches.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: Josh Boyer <jwboyer@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:10:59 -03:00
Mauro Carvalho Chehab 93e4fe64ec edac: rewrite edac_align_ptr()
The edac_align_ptr() function is used to prepare data for a single
memory allocation kzalloc() call. It counts how many bytes are needed
by some data structure.

Using it as-is is not that trivial, as the quantity of memory elements
reserved is not there, but, instead, it is on a next call.

In order to avoid mistakes when using it, move the number of allocated
elements into it, making easier to use it.

Reviewed-by: Borislav Petkov <bp@amd64.org>
Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:10:59 -03:00
Mauro Carvalho Chehab a895bf8b1e edac: move nr_pages to dimm struct
The number of pages is a dimm property. Move it to the dimm struct.

After this change, it is possible to add sysfs nodes for the DIMM's that
will properly represent the DIMM stick properties, including its size.

A TODO fix here is to properly represent dual-rank/quad-rank DIMMs when
the memory controller represents the memory via chip select rows.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Cc: Tim Small <tim@buttersideup.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Egor Martovetsky <egor@pasemi.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Joe Perches <joe@perches.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: Josh Boyer <jwboyer@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:10:58 -03:00
Mauro Carvalho Chehab 5e2af0c09e edac: Don't initialize csrow's first_page & friends when not needed
Almost all edac	drivers	initialize csrow_info->first_page,
csrow_info->last_page and csrow_info->page_mask. Those vars are
used inside the EDAC core, in order to calculate the csrow affected
by an error, by using the routine edac_mc_find_csrow_by_page().

However, very few drivers actually use it:
        e752x_edac.c
        e7xxx_edac.c
        i3000_edac.c
        i82443bxgx_edac.c
        i82860_edac.c
        i82875p_edac.c
        i82975x_edac.c
        r82600_edac.c

There also a few other drivers that have their own calculus
formula internally using those vars.

All the others are just wasting time by initializing those
data.

While initializing data without using them won't cause any troubles, as
those information is stored at the wrong place (at csrows structure), it
is better to remove what is unused, in order to simplify the next patch.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com>
Cc: Josh Boyer <jwboyer@gmail.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:10:58 -03:00
Mauro Carvalho Chehab 084a4fccef edac: move dimm properties to struct dimm_info
On systems based on chip select rows, all channels need to use memories
with the same properties, otherwise the memories on channels A and B
won't be recognized.

However, such assumption is not true for all types of memory
controllers.

Controllers for FB-DIMM's don't have such requirements.

Also, modern Intel controllers seem to be capable of handling such
differences.

So, we need to get rid of storing the DIMM information into a per-csrow
data, storing it, instead at the right place.

The first step is to move grain, mtype, dtype and edac_mode to the
per-dimm struct.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Reviewed-by: Borislav Petkov <borislav.petkov@amd.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Cc: Tim Small <tim@buttersideup.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Egor Martovetsky <egor@pasemi.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Joe Perches <joe@perches.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: James Bottomley <James.Bottomley@parallels.com>
Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: Josh Boyer <jwboyer@gmail.com>
Cc: Mike Williams <mike@mikebwilliams.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:10:58 -03:00
Mauro Carvalho Chehab a7d7d2e1a0 edac: Create a dimm struct and move the labels into it
The way a DIMM is currently represented implies that they're
linked into a per-csrow struct. However, some drivers don't see
csrows, as they're ridden behind some chip like the AMB's
on FBDIMM's, for example.

This forced drivers to fake^Wvirtualize a csrow struct, and to create
a mess under csrow/channel original's concept.

Move the DIMM labels into a per-DIMM struct, and add there
the real location of the socket, in terms of csrow/channel.
Latter patches will modify the location to properly represent the
memory architecture.

All other drivers will use a per-csrow type of location.
Some of those drivers will require a latter conversion, as
they also fake the csrows internally.

TODO: While this patch doesn't change the existing behavior, on
csrows-based memory controllers, a csrow/channel pair points to a memory
rank. There's a known bug at the EDAC core that allows having different
labels for the same DIMM, if it has more than one rank. A latter patch
is need to merge the several ranks for a DIMM into the same dimm_info
struct, in order to avoid having different labels for the same DIMM.

The edac_mc_alloc() will now contain a per-dimm initialization loop that
will be changed by latter patches in order to match other types of
memory architectures.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Reviewed-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:10:57 -03:00
Borislav Petkov e8f380e008 x86/bitops: Move BIT_64() for a wider use
Needed for shifting 64-bit values on 32-bit, like MSR values,
for example.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frank Arnold <frank.arnold@amd.com>
Link: http://lkml.kernel.org/r/1337684026-19740-1-git-send-email-bp@amd64.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-05-23 17:16:42 +02:00
Jiri Kosina f70d4a95ed edac, mips: don't change code that has been removed in edac/mips tree
This is a partial revert of

	15ed103a98 ("edac: Fix spelling errors")
	6997991ab0 ("mips: Fix printk typos in arc/mips")

which change code that doesn't exist any more in edac/mips trees.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-05-22 11:00:09 +02:00
David Mackey 15ed103a98 edac: Fix spelling errors.
Signed-off-by: David Mackey <tdmackey@twitter.com>
Signed-off-by: Vinson Lee <vlee@twitter.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-04-30 13:28:41 +02:00
Linus Torvalds 4157368edb Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
Pull arch/tile bug fixes from Chris Metcalf:
 "This includes Paul Gortmaker's change to fix the <asm/system.h>
  disintegration issues on tile, a fix to unbreak the tilepro ethernet
  driver, and a backlog of bugfix-only changes from internal Tilera
  development over the last few months.

  They have all been to LKML and on linux-next for the last few days.
  The EDAC change to MAINTAINERS is an oddity but discussion on the
  linux-edac list suggested I ask you to pull that change through my
  tree since they don't have a tree to pull edac changes from at the
  moment."

* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: (39 commits)
  drivers/net/ethernet/tile: fix netdev_alloc_skb() bombing
  MAINTAINERS: update EDAC information
  tilepro ethernet driver: fix a few minor issues
  tile-srom.c driver: minor code cleanup
  edac: say "TILEGx" not "TILEPro" for the tilegx edac driver
  arch/tile: avoid accidentally unmasking NMI-type interrupt accidentally
  arch/tile: remove bogus performance optimization
  arch/tile: return SIGBUS for addresses that are unaligned AND invalid
  arch/tile: fix finv_buffer_remote() for tilegx
  arch/tile: use atomic exchange in arch_write_unlock()
  arch/tile: stop mentioning the "kvm" subdirectory
  arch/tile: export the page_home() function.
  arch/tile: fix pointer cast in cacheflush.c
  arch/tile: fix single-stepping over swint1 instructions on tilegx
  arch/tile: implement panic_smp_self_stop()
  arch/tile: add "nop" after "nap" to help GX idle power draw
  arch/tile: use proper memparse() for "maxmem" options
  arch/tile: fix up locking in pgtable.c slightly
  arch/tile: don't leak kernel memory when we unload modules
  arch/tile: fix bug in delay_backoff()
  ...
2012-04-06 17:56:20 -07:00
Borislav Petkov ec3e82d6dc MCE, AMD: Drop too granulary family model checks
MCA details seldom change inbetween the models of a family so don't
be too conservative and enable decoding on everything starting from
K8 onwards. Minor adjustments can come in later but most importantly,
we have some decoding infrastructure in place for upcoming models by
default.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-04-04 15:50:11 +02:00
Chris Metcalf e2e110d759 edac: say "TILEGx" not "TILEPro" for the tilegx edac driver
This is just an aesthetic change but it was silly to say TILEPro
when booting up on the tilegx architecture.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-04-02 12:14:06 -04:00
Linus Torvalds f0f3680e50 Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull EDAC fixes from Mauro Carvalho Chehab:
 "A series of EDAC driver fixes.  It also has one core fix at the
  documentation, and a rename patch, fixing the name of the struct that
  contains the rank information."

* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac:
  edac: rename channel_info to rank_info
  i5400_edac: Avoid calling pci_put_device() twice
  edac: i5100 ack error detection register after each read
  edac: i5100 fix erroneous define for M1Err
  edac: sb_edac: Fix a wrong value setting for the previous value
  edac: sb_edac: Fix a INTERLEAVE_MODE() misuse
  edac: sb_edac: Let the driver depend on PCI_MMCONFIG
  edac: Improve the comments to better describe the memory concepts
  edac/ppc4xx_edac: Fix compilation
  Fix sb_edac compilation with 32 bits kernels
2012-03-28 14:24:40 -07:00
Linus Torvalds 250f6715a4 The following text was taken from the original review request:
"[RFC PATCH 0/2] audit of linux/device.h users in include/*"
 		https://lkml.org/lkml/2012/3/4/159
 --
 
 Nearly every subsystem has some kind of header with a proto like:
 
 	void foo(struct device *dev);
 
 and yet there is no reason for most of these guys to care about the
 sub fields within the device struct.  This allows us to significantly
 reduce the scope of headers including headers.  For this instance, a
 reduction of about 40% is achieved by replacing the include with the
 simple fact that the device is some kind of a struct.
 
 Unlike the much larger module.h cleanup, this one is simply two
 commits.  One to fix the implicit <linux/device.h> users, and then
 one to delete the device.h includes from the linux/include/ dir
 wherever possible.
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Merge tag 'device-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

Pull <linux/device.h> avoidance patches from Paul Gortmaker:
 "Nearly every subsystem has some kind of header with a proto like:

	void foo(struct device *dev);

  and yet there is no reason for most of these guys to care about the
  sub fields within the device struct.  This allows us to significantly
  reduce the scope of headers including headers.  For this instance, a
  reduction of about 40% is achieved by replacing the include with the
  simple fact that the device is some kind of a struct.

  Unlike the much larger module.h cleanup, this one is simply two
  commits.  One to fix the implicit <linux/device.h> users, and then one
  to delete the device.h includes from the linux/include/ dir wherever
  possible."

* tag 'device-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  device.h: audit and cleanup users in main include dir
  device.h: cleanup users outside of linux/include (C files)
2012-03-24 10:41:37 -07:00
Linus Torvalds dae430c6f6 A bunch of fixes/updates for the AMD side of EDAC including
* MCE decoding updates
 * tree-wide EDAC sweep making pci_device_ids __devinitconst
 * Scrub rate API correction
 * two amd64_edac corrections for K8 boxes and sysfs csrow nodes
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Merge tag 'amd64-edac-updates-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull AMD64 EDAC fixes from Borislav Petkov:
 "A bunch of fixes/updates for the AMD side of EDAC including

   * MCE decoding updates
   * tree-wide EDAC sweep making pci_device_ids __devinitconst
   * Scrub rate API correction
   * two amd64_edac corrections for K8 boxes and sysfs csrow nodes"

* tag 'amd64-edac-updates-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  MCE, AMD: Constify error tables
  MCE, AMD: Correct bank 5 error signatures
  MCE, AMD: Rework NB MCE signatures
  MCE, AMD: Correct VB data error description
  MCE, AMD: Correct ucode patch buffer description
  MCE, AMD: Correct some MC0 error types
  EDAC: Make pci_device_id tables __devinitconst.
  EDAC: Correct scrub rate API
  amd64_edac: Fix K8 revD and later chip select sizes
  amd64_edac: Fix missing csrows sysfs nodes
2012-03-23 17:59:47 -07:00
Mauro Carvalho Chehab a4b4be3fd7 edac: rename channel_info to rank_info
What it is pointed by a csrow/channel vector is a rank information, and
not a channel information.

On a traditional architecture, the memory controller directly access the
memory ranks, via chip select rows. Different ranks at the same DIMM is
selected via different chip select rows. So, typically, one
csrow/channel pair means one different DIMM.

On FB-DIMMs, there's a microcontroller chip at the DIMM, called Advanced
Memory Buffer (AMB) that serves as the interface between the memory
controller and the memory chips.

The AMB selection is via the DIMM slot, and not via a csrow.

It is up to the AMB to talk with the csrows of the DRAM chips.

So, the FB-DIMM memory controllers see the DIMM slot, and not the DIMM
rank. RAMBUS is similar.

Newer memory controllers, like the ones found on Intel Sandy Bridge and
Nehalem, even working with normal DDR3 DIMM's, don't use the usual
channel A/channel B interleaving schema to provide 128 bits data access.

Instead, they have more channels (3 or 4 channels), and they can use
several interleaving schemas. Such memory controllers see the DIMMs
directly on their registers, instead of the ranks, which is better for
the driver, as its main usageis to point to a broken DIMM stick (the
Field Repleceable Unit), and not to point to a broken DRAM chip.

The drivers that support such such newer memory architecture models
currently need to fake information and to abuse on EDAC structures, as
the subsystem was conceived with the idea that the csrow would always be
visible by the CPU.

To make things a little worse, those drivers don't currently fake
csrows/channels on a consistent way, as the concepts there don't apply
to the memory controllers they're talking with. So, each driver author
interpreted the concepts using a different logic.

In order to fix it, let's rename the data structure that points into a
DIMM rank to "rank_info", in order to be clearer about what's stored
there.

Latter patches will provide a better way to represent the memory
hierarchy for the other types of memory controller.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-03-21 15:22:50 -03:00
Mauro Carvalho Chehab 0142877aa4 i5400_edac: Avoid calling pci_put_device() twice
When i5400_edac driver is removed and re-loaded a few times, it causes
an OOPS, as it is currently decrementing some PCI device usage two
times.

When called inside a loop, pci_get_device() will call
pci_put_device(). That mangles the error count. In this specific
case, it seems easier to just duplicate the call.

Also fixes the error logic when pci_get_device fails.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-03-21 15:22:49 -03:00
Niklas Söderlund df95e42e1f edac: i5100 ack error detection register after each read
If I only ack the detection register after a error have been detected
I'm unable to reliably detect errors. I have verified this behavior
using both an error injection DIMM and software to inject errors.

I can't find any documentation supporting this behavior in Intel 5100
Memory Controller Hub Chipset, see 1. So this is all based on
experimentation.

[1] Intel® 5100 Memory Controller Hub Chipset
    http://www.intel.com/content/dam/doc/datasheet/5100-
	memory-controller-hub-chipset-datasheet.pdf

Signed-off-by: Niklas Söderlund <niklas.soderlund@ericsson.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-03-21 15:22:49 -03:00
Niklas Söderlund b6378cb3e5 edac: i5100 fix erroneous define for M1Err
According to [1] the define for M1Err in the FERR_NF_MEM register is
wrong. It should be at position 1 not 0.

[1] Intel 5100 Memory Controller Hub Chipset Doc.Nr: 318378
    http://www.intel.com/content/dam/doc/datasheet/5100-
    memory-controller-hub-chipset-datasheet.pdf

Reported-by: Ba Thang Nguyen <thang.b.nguyen@dektech.com.au>
Signed-off-by: Niklas Söderlund <niklas.soderlund@ericsson.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-03-21 15:20:55 -03:00
Hui Wang 7fae0db439 edac: sb_edac: Fix a wrong value setting for the previous value
>From the driver design, the variable limit wants to compare with its
previous value, we should set the value of limit instead of the value
of tmp_mb to the variable prev.

Signed-off-by: Hui Wang <jason77.wang@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-03-21 15:20:11 -03:00
Hui Wang ad9c40b7dd edac: sb_edac: Fix a INTERLEAVE_MODE() misuse
We can identify dram interleave mode from the Dram Rule register
rather than Dram Interleave list register.

In this context, the reg of INTERLEAVE_MODE(reg) contains the Dram
Interleave list register, we can't get interleave mode from the reg,
while the variable interleave_mode saves the the mode got from the
Dram Rule register, so we use the variable to replace
INTERLEAVE_MDDE(reg) here.

Signed-off-by: Hui Wang <jason77.wang@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-03-21 15:20:02 -03:00
Hui Wang 22a5c27bec edac: sb_edac: Let the driver depend on PCI_MMCONFIG
This driver needs to access PCIe Extended Configuration Space
Registers (0x100~0xfff), to correctly access those registers, we need
to enable PCI_MMCONFIG option. Since this option is not enabled for
X86_64 by default, we let the driver depend on it to prevent users
forgetting to enable this option.

Signed-off-by: Hui Wang <jason77.wang@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-03-21 15:19:56 -03:00
Mauro Carvalho Chehab b877763ea0 edac/ppc4xx_edac: Fix compilation
It seems that nobody is cross-compiling for this arch anymore...

drivers/edac/ppc4xx_edac.c: In function 'ppc4xx_edac_probe':
drivers/edac/ppc4xx_edac.c:188:12: error: storage class specified for parameter 'ppc4xx_edac_remove'
...
drivers/edac/ppc4xx_edac.c:1068:19: error: 'match' undeclared (first use in this function)
drivers/edac/ppc4xx_edac.c:1068:19: note: each undeclared identifier is reported only once for each function it appears in
drivers/edac/ppc4xx_edac.c:1068:36: warning: left-hand operand of comma expression has no effect [-Wunused-value]

Acked-by: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-03-21 15:19:44 -03:00
Mauro Carvalho Chehab 5b889e379f Fix sb_edac compilation with 32 bits kernels
As reported by Josh Boyer <jwboyer@redhat.com>:
>	drivers/edac/sb_edac.c: In function 'get_memory_error_data':
> 	drivers/edac/sb_edac.c:861:2: warning: left shift count >= width of type
> 	[enabled by default]
> 	<snip>
> 	ERROR: "__udivdi3" [drivers/edac/sb_edac.ko] undefined!
> 	make[1]: *** [__modpost] Error 1
> 	make: *** [modules] Error 2

PS.: compile-tested only

Reported-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-03-21 15:19:38 -03:00
Cong Wang 4e5df7ca30 edac: remove the second argument of k[un]map_atomic()
Signed-off-by: Cong Wang <amwang@redhat.com>
2012-03-20 21:48:17 +08:00
Borislav Petkov ebe2aea868 MCE, AMD: Constify error tables
... so that checkpatch can chill out.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Reviewed-by: Andreas Herrmann <andreas.herrmann3@amd.com>
2012-03-19 12:06:26 +01:00
Borislav Petkov ae615b4b5f MCE, AMD: Correct bank 5 error signatures
... and remove superfluous ErrorCodeExt check.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Reviewed-by: Andreas Herrmann <andreas.herrmann3@amd.com>
2012-03-19 12:06:26 +01:00
Borislav Petkov 68782673e6 MCE, AMD: Rework NB MCE signatures
Correct their formulation, replace per-family functions with a single,
unified lookup table.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Reviewed-by: Andreas Herrmann <andreas.herrmann3@amd.com>
2012-03-19 12:06:25 +01:00
Borislav Petkov b64a99c175 MCE, AMD: Correct VB data error description
Sync with latest BKDG error types.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Reviewed-by: Andreas Herrmann <andreas.herrmann3@amd.com>
2012-03-19 12:06:25 +01:00
Borislav Petkov 6c1173a61e MCE, AMD: Correct ucode patch buffer description
This MC1 error signature is called differently now, fix it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Reviewed-by: Andreas Herrmann <andreas.herrmann3@amd.com>
2012-03-19 12:06:24 +01:00
Borislav Petkov 344f0a0631 MCE, AMD: Correct some MC0 error types
Use "System Read Data Error" as a more general name for MC0 bus errors
on F15h and update some error definitions.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Reviewed-by: Andreas Herrmann <andreas.herrmann3@amd.com>
2012-03-19 12:06:23 +01:00
Lionel Debroux 36c46f31df EDAC: Make pci_device_id tables __devinitconst.
These const tables are currently marked __devinitdata, but
Documentation/PCI/pci.txt says:

"o The ID table array should be marked __devinitconst; this is done
automatically if the table is declared with DEFINE_PCI_DEVICE_TABLE()."

So use DEFINE_PCI_DEVICE_TABLE(x).

Based on PaX and earlier work by Andi Kleen.

Signed-off-by: Lionel Debroux <lionel_debroux@yahoo.fr>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-03-19 12:04:54 +01:00
Borislav Petkov 5e8e19bf6c EDAC: Correct scrub rate API
The original scrub rate API definition states that if scrub rate
accessors are not implemented, a negative value (-1) should be written
to the sysfs file (/sys/devices/system/edac/mc/mc<N>/sdram_scrub_rate,
where N is the memory controller number on the system). This is
counter-intuitive and awkward at the very least because, when setting
the scrub rate, userspace has to write to sysfs and then read it back to
check error status of the operation.

As Tony notes, best it would be to not have the sdram_scrub_rate in
sysfs if scrub rate support is not implemented. It is too late about
that and a bunch of drivers on a bunch of arches would need to be
changed and tested which is not a trivial task ATM.

Instead, settle for the next best thing of returning -ENODEV when
implementation is missing and -EINVAL when there was an error
encountered while setting the scrub rate.

Reported-by: Han Pingtian <phan@redhat.com>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/20110916105856.GA13253@hpt.nay.redhat.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-03-19 12:03:58 +01:00
Borislav Petkov 11b0a31473 amd64_edac: Fix K8 revD and later chip select sizes
Fix DRAM chip select sizes calculation for K8, revisions D and E.

Reported-by: Niklas Söderlund <niklas.soderlund@ericsson.com
Link: http://lkml.kernel.org/r/1320849178-23340-1-git-send-email-niklas.soderlund@ericsson.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-03-19 12:02:46 +01:00
Ashish Shenoy f92cae4526 amd64_edac: Fix missing csrows sysfs nodes
While initializing the array of csrow attribute instances, a few csrows
were uninitialized. This happened because the module only performed a
check for DRAM base ctl register0's and not DRAM base ctl register1's
chip select enable bit. There could be systems with DIMMs populated
on only single memory channel whereas the module also assumed that a
dual channel dimm had double the memory size of a single memory channel
instead of checking the memory on each channel.

This patch fixes these above issues.

Signed-off-by: Ashish Shenoy <ashenoy@riverbed.com>
Signed-off-by: Prasanna S. Panchamukhi <ppanchamukhi@riverbed.com>
Link: http://lkml.kernel.org/r/4F459CFA.5090604@riverbed.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-03-19 11:57:28 +01:00
Paul Gortmaker 51990e8254 device.h: cleanup users outside of linux/include (C files)
For files that are actively using linux/device.h, make sure
that they call it out.  This will allow us to clean up some
of the implicit uses of linux/device.h within include/*
without introducing build regressions.

Yes, this was created by "cheating" -- i.e. the headers were
cleaned up, and then the fallout was found and fixed, and then
the two commits were reordered.  This ensures we don't introduce
build regressions into the git history.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-03-11 14:27:37 -04:00
Hitoshi Mitake 797a796a13 asm-generic: architecture independent readq/writeq for 32bit environment
This provides unified readq()/writeq() helper functions for 32-bit
drivers.

For some cases, readq/writeq without atomicity is harmful, and order of
io access has to be specified explicitly.  So in this patch, new two
header files which contain non-atomic readq/writeq are added.

 - <asm-generic/io-64-nonatomic-lo-hi.h> provides non-atomic readq/
   writeq with the order of lower address -> higher address

 - <asm-generic/io-64-nonatomic-hi-lo.h> provides non-atomic readq/
   writeq with reversed order

This allows us to remove some readq()s that were added drivers when the
default non-atomic ones were removed in commit dbee8a0aff ("x86:
remove 32-bit versions of readq()/writeq()")

The drivers which need readq/writeq but can do with the non-atomic ones
must add the line:

  #include <asm-generic/io-64-nonatomic-lo-hi.h> /* or hi-lo.h */

But this will be nop in 64-bit environments, and no other #ifdefs are
required.  So I believe that this patch can solve the problem of
 1. driver-specific readq/writeq
 2. atomicity and order of io access

This patch is tested with building allyesconfig and allmodconfig as
ARCH=x86 and ARCH=i386 on top of tip/master.

Cc: Kashyap Desai <Kashyap.Desai@lsi.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Ravi Anand <ravi.anand@qlogic.com>
Cc: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Cc: James Bottomley <James.Bottomley@parallels.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: James Bottomley <jbottomley@parallels.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Hitoshi Mitake <h.mitake@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-21 16:47:28 -08:00
Rusty Russell 90ab5ee941 module_param: make bool parameters really bool (drivers & misc)
module_param(bool) used to counter-intuitively take an int.  In
fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
trick.

It's time to remove the int/unsigned int option.  For this version
it'll simply give a warning, but it'll break next kernel version.

Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-01-13 09:32:20 +10:30
Linus Torvalds 98793265b4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (53 commits)
  Kconfig: acpi: Fix typo in comment.
  misc latin1 to utf8 conversions
  devres: Fix a typo in devm_kfree comment
  btrfs: free-space-cache.c: remove extra semicolon.
  fat: Spelling s/obsolate/obsolete/g
  SCSI, pmcraid: Fix spelling error in a pmcraid_err() call
  tools/power turbostat: update fields in manpage
  mac80211: drop spelling fix
  types.h: fix comment spelling for 'architectures'
  typo fixes: aera -> area, exntension -> extension
  devices.txt: Fix typo of 'VMware'.
  sis900: Fix enum typo 'sis900_rx_bufer_status'
  decompress_bunzip2: remove invalid vi modeline
  treewide: Fix comment and string typo 'bufer'
  hyper-v: Update MAINTAINERS
  treewide: Fix typos in various parts of the kernel, and fix some comments.
  clockevents: drop unknown Kconfig symbol GENERIC_CLOCKEVENTS_MIGR
  gpio: Kconfig: drop unknown symbol 'CS5535_GPIO'
  leds: Kconfig: Fix typo 'D2NET_V2'
  sound: Kconfig: drop unknown symbol ARCH_CLPS7500
  ...

Fix up trivial conflicts in arch/powerpc/platforms/40x/Kconfig (some new
kconfig additions, close to removed commented-out old ones)
2012-01-08 13:21:22 -08:00
Linus Torvalds 7affca3537 Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (73 commits)
  arm: fix up some samsung merge sysdev conversion problems
  firmware: Fix an oops on reading fw_priv->fw in sysfs loading file
  Drivers:hv: Fix a bug in vmbus_driver_unregister()
  driver core: remove __must_check from device_create_file
  debugfs: add missing #ifdef HAS_IOMEM
  arm: time.h: remove device.h #include
  driver-core: remove sysdev.h usage.
  clockevents: remove sysdev.h
  arm: convert sysdev_class to a regular subsystem
  arm: leds: convert sysdev_class to a regular subsystem
  kobject: remove kset_find_obj_hinted()
  m86k: gpio - convert sysdev_class to a regular subsystem
  mips: txx9_sram - convert sysdev_class to a regular subsystem
  mips: 7segled - convert sysdev_class to a regular subsystem
  sh: dma - convert sysdev_class to a regular subsystem
  sh: intc - convert sysdev_class to a regular subsystem
  power: suspend - convert sysdev_class to a regular subsystem
  power: qe_ic - convert sysdev_class to a regular subsystem
  power: cmm - convert sysdev_class to a regular subsystem
  s390: time - convert sysdev_class to a regular subsystem
  ...

Fix up conflicts with 'struct sysdev' removal from various platform
drivers that got changed:
 - arch/arm/mach-exynos/cpu.c
 - arch/arm/mach-exynos/irq-eint.c
 - arch/arm/mach-s3c64xx/common.c
 - arch/arm/mach-s3c64xx/cpu.c
 - arch/arm/mach-s5p64x0/cpu.c
 - arch/arm/mach-s5pv210/common.c
 - arch/arm/plat-samsung/include/plat/cpu.h
 - arch/powerpc/kernel/sysfs.c
and fix up cpu_is_hotpluggable() as per Greg in include/linux/cpu.h
2012-01-07 12:03:30 -08:00
Linus Torvalds edf7c8148e Merge branch 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: add IRQ context simulation in module mce-inject
  x86, mce, therm_throt: Don't report power limit and package level thermal throttle events in mcelog
  x86, MCE: Drain mcelog buffer
  x86, mce: Add wrappers for registering on the decode chain
2012-01-06 15:02:37 -08:00
Greg Kroah-Hartman ff4b8a57f0 Merge branch 'driver-core-next' into Linux 3.2
This resolves the conflict in the arch/arm/mach-s3c64xx/s3c6400.c file,
and it fixes the build error in the arch/x86/kernel/microcode_core.c
file, that the merge did not catch.

The microcode_core.c patch was provided by Stephen Rothwell
<sfr@canb.auug.org.au> who was invaluable in the merge issues involved
with the large sysdev removal process in the driver-core tree.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-06 11:42:52 -08:00
Kevin Winchester 141168c36c x86: Simplify code by removing a !SMP #ifdefs from 'struct cpuinfo_x86'
Several fields in struct cpuinfo_x86 were not defined for the
!SMP case, likely to save space.  However, those fields still
have some meaning for UP, and keeping them allows some #ifdef
removal from other files.  The additional size of the UP kernel
from this change is not significant enough to worry about
keeping up the distinction:

	   text    data     bss     dec     hex filename
	4737168	 506459	 972040	6215667	 5ed7f3	vmlinux.o.before
	4737444	 506459	 972040	6215943	 5ed907	vmlinux.o.after

for a difference of 276 bytes for an example UP config.

If someone wants those 276 bytes back badly then it should
be implemented in a cleaner way.

Signed-off-by: Kevin Winchester <kjwinchester@gmail.com>
Cc: Steffen Persvold <sp@numascale.com>
Link: http://lkml.kernel.org/r/1324428742-12498-1-git-send-email-kjwinchester@gmail.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-21 09:25:09 +01:00
Kay Sievers fe5ff8b84c edac: convert sysdev_class to a regular subsystem
After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.

Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-14 15:21:07 -08:00
Borislav Petkov 3653ada5d3 x86, mce: Add wrappers for registering on the decode chain
No functionality change, this is done so that in a follow-on patch all
queued-up MCEs can be decoded after registering on the chain.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-12-14 12:50:12 +01:00
Justin P. Mattock 42b2aa86c6 treewide: Fix typos in various parts of the kernel, and fix some comments.
The below patch fixes some typos in various parts of the kernel, as well as fixes some comments.
Please let me know if I missed anything, and I will try to get it changed and resent.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-12-02 14:57:31 +01:00
Shaohui Xie 86f9a43305 drivers/edac/mpc85xx_edac.c: fix memory controller compatible for edac
compatible in dts has been changed, so the driver needs to be updated
accordingly.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-11-24 01:59:38 -06:00
Jiri Kosina 2290c0d06d Merge branch 'master' into for-next
Sync with Linus tree to have 157550ff ("mtd: add GPMI-NAND driver
in the config and Makefile") as I have patch depending on that one.
2011-11-13 20:55:53 +01:00
Linus Torvalds 32aaeffbd4 Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
* 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits)
  Revert "tracing: Include module.h in define_trace.h"
  irq: don't put module.h into irq.h for tracking irqgen modules.
  bluetooth: macroize two small inlines to avoid module.h
  ip_vs.h: fix implicit use of module_get/module_put from module.h
  nf_conntrack.h: fix up fallout from implicit moduleparam.h presence
  include: replace linux/module.h with "struct module" wherever possible
  include: convert various register fcns to macros to avoid include chaining
  crypto.h: remove unused crypto_tfm_alg_modname() inline
  uwb.h: fix implicit use of asm/page.h for PAGE_SIZE
  pm_runtime.h: explicitly requires notifier.h
  linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h
  miscdevice.h: fix up implicit use of lists and types
  stop_machine.h: fix implicit use of smp.h for smp_processor_id
  of: fix implicit use of errno.h in include/linux/of.h
  of_platform.h: delete needless include <linux/module.h>
  acpi: remove module.h include from platform/aclinux.h
  miscdevice.h: delete unnecessary inclusion of module.h
  device_cgroup.h: delete needless include <linux/module.h>
  net: sch_generic remove redundant use of <linux/module.h>
  net: inet_timewait_sock doesnt need <linux/module.h>
  ...

Fix up trivial conflicts (other header files, and  removal of the ab3550 mfd driver) in
 - drivers/media/dvb/frontends/dibx000_common.c
 - drivers/media/video/{mt9m111.c,ov6650.c}
 - drivers/mfd/ab3550-core.c
 - include/linux/dmaengine.h
2011-11-06 19:44:47 -08:00
Linus Torvalds 1197ab2942 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (106 commits)
  powerpc/p3060qds: Add support for P3060QDS board
  powerpc/83xx: Add shutdown request support to MCU handling on MPC8349 MITX
  powerpc/85xx: Make kexec to interate over online cpus
  powerpc/fsl_booke: Fix comment in head_fsl_booke.S
  powerpc/85xx: issue 15 EOI after core reset for FSL CoreNet devices
  powerpc/8xxx: Fix interrupt handling in MPC8xxx GPIO driver
  powerpc/85xx: Add 'fsl,pq3-gpio' compatiable for GPIO driver
  powerpc/86xx: Correct Gianfar support for GE boards
  powerpc/cpm: Clear muram before it is in use.
  drivers/virt: add ioctl for 32-bit compat on 64-bit to fsl-hv-manager
  powerpc/fsl_msi: add support for "msi-address-64" property
  powerpc/85xx: Setup secondary cores PIR with hard SMP id
  powerpc/fsl-booke: Fix settlbcam for 64-bit
  powerpc/85xx: Adding DCSR node to dtsi device trees
  powerpc/85xx: clean up FPGA device tree nodes for Freecsale QorIQ boards
  powerpc/85xx: fix PHYS_64BIT selection for P1022DS
  powerpc/fsl-booke: Fix setup_initial_memory_limit to not blindly map
  powerpc: respect mem= setting for early memory limit setup
  powerpc: Update corenet64_smp_defconfig
  powerpc: Update mpc85xx/corenet 32-bit defconfigs
  ...

Fix up trivial conflicts in:
 - arch/powerpc/configs/40x/hcu4_defconfig
	removed stale file, edited elsewhere
 - arch/powerpc/include/asm/udbg.h, arch/powerpc/kernel/udbg.c:
	added opal and gelic drivers vs added ePAPR driver
 - drivers/tty/serial/8250.c
	moved UPIO_TSI to powerpc vs removed UPIO_DWAPB support
2011-11-06 17:12:03 -08:00
Josh Boyer f04c045f8c edac: Only build sb_edac on 64-bit
The sb_edac driver is marginally useful on a 32-bit kernel, and
currently has 64-bit divide compile errors when building that config.
For now, make this build on only for 64-bit kernels.

Signed-off-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-11-03 11:22:44 -07:00
Linus Torvalds 6681ba7ec4 Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (21 commits)
  MAINTAINERS: add an entry for Edac Sandy Bridge driver
  edac: tag sb_edac as EXPERIMENTAL, as it requires more testing
  EDAC: Fix incorrect edac mode reporting in sb_edac
  edac: sb_edac: Add it to the building system
  edac: Add an experimental new driver to support Sandy Bridge CPU's
  i7300_edac: Fix error cleanup logic
  i7core_edac: Initialize memory name with cpu, channel, bank
  i7core_edac: Fix compilation on 32 bits arch
  i7core_edac: scrubbing fixups
  EDAC: Correct Kconfig dependencies
  i7core_edac: return -ENODEV if no MC is found
  i7core_edac: use edac's own way to print errors
  MAINTAINERS: remove dropped edac_mce.* from the file
  i7core_edac: Drop the edac_mce facility
  x86, MCE: Use notifier chain only for MCE decoding
  EDAC i7core: Use mce socketid for better compatibility
  i7core_edac: Don't enable memory scrubbing for Xeon 35xx
  i7core_edac: Add scrubbing support
  edac: Move edac main structs to include/linux/edac.h
  i7core_edac: Fix oops when trying to inject errors
  ...
2011-11-02 16:55:15 -07:00
Mauro Carvalho Chehab 124a02c9b4 edac: tag sb_edac as EXPERIMENTAL, as it requires more testing
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-01 10:01:55 -02:00
Mark A. Grondona c6e13b528f EDAC: Fix incorrect edac mode reporting in sb_edac
The edac driver for Sandy Bridge was found to be reporting "FPM"
for edac_mode, which clearly doesn't make sense. It was found that
sb_edac.c:get_dimm_config was reusing a variable for both mem_type
and edac_type, and thus was overwriting the value after setting
it correctly. This patch fixes that issue.

Before the patch:
/sys/devices/system/edac/mc/mc0/csrow0/edac_mode:FPM
/sys/devices/system/edac/mc/mc0/csrow1/edac_mode:FPM
/sys/devices/system/edac/mc/mc0/csrow2/edac_mode:FPM
/sys/devices/system/edac/mc/mc0/csrow3/edac_mode:FPM

After:
/sys/devices/system/edac/mc/mc0/csrow0/edac_mode:S4ECD4ED
/sys/devices/system/edac/mc/mc0/csrow1/edac_mode:S4ECD4ED
/sys/devices/system/edac/mc/mc0/csrow2/edac_mode:S4ECD4ED
/sys/devices/system/edac/mc/mc0/csrow3/edac_mode:S4ECD4ED

Signed-off-by: Mark A. Grondona <mgrondona@llnl.gov>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-01 10:01:55 -02:00
Mauro Carvalho Chehab 3d78c9af78 edac: sb_edac: Add it to the building system
Some changes on it were required due to changeset cd90cc84c6bf0, that
changed the glue with the MCE logic.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-01 10:01:54 -02:00
Mauro Carvalho Chehab eebf11a016 edac: Add an experimental new driver to support Sandy Bridge CPU's
This driver is known to work on mine and Tony's test environments,
using software error injection, and a partial hardware/software
error injection tool.

There's no broader range test yet to double check if the error decoding
logic will actually point to the right DIMM, so use it with care.
More tests are required to be sure that the driver will work on all
different types of memory configurations.

If you're willing to risk using it, I suggest you to enable EDAC debugs
for your test machines, as the debug logs helps to track what's going
inside the driver.

Please feed me with bug reports, if you notice that the driver
is miss-behaving.

Tested-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-01 10:01:53 -02:00
Mauro Carvalho Chehab 5f032119d6 i7300_edac: Fix error cleanup logic
The error cleanup logic was broken. Due to that, one error is generated for
every error polling.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-01 10:01:53 -02:00
Mauro Carvalho Chehab 767ba4a52a i7core_edac: Initialize memory name with cpu, channel, bank
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-01 10:01:52 -02:00
Sedat Dilek 4fad8098bc i7core_edac: Fix compilation on 32 bits arch
on i386:
	ERROR: "__udivdi3" [drivers/edac/i7core_edac.ko] undefined!\

In both get_sdram_scrub_rate() and set_sdram_scrub_rate()

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-01 10:01:51 -02:00
Nils Carlson 535e9c78e1 i7core_edac: scrubbing fixups
Get a more reliable DCLK value from DMI, name the SCRUBINTERVAL mask
and guard against potential overflow in the scrub rate computations.

Signed-off-by: Nils Carlson <nils.carlson@ericsson.com>
2011-11-01 10:01:51 -02:00
Borislav Petkov 168eb34ded EDAC: Correct Kconfig dependencies
Both AMD and Intel i7 EDAC drivers use MCE features and are thus
dependent of this functionality present in the kernel. Express this in
Kconfig so that randconfig builds don't break.

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-01 10:01:50 -02:00
Mauro Carvalho Chehab 4055759145 i7core_edac: return -ENODEV if no MC is found
Nehalem-EX uses a different memory controller. However, as the
memory controller is not visible on some Nehalem/Nehalem-EP, we
need to indirectly probe via a X58 PCI device. The same devices
are found on (some) Nehalem-EX. So, on those machines, the
probe routine needs to return -ENODEV, as the actual Memory
Controller registers won't be detected.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-01 10:01:49 -02:00
Mauro Carvalho Chehab f9902f24fc i7core_edac: use edac's own way to print errors
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-01 10:01:48 -02:00
Borislav Petkov 4140c54266 i7core_edac: Drop the edac_mce facility
Remove edac_mce pieces and use the normal MCE decoder notifier chain by
retaining the same functionality with considerably less code.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-01 10:01:24 -02:00
Paul Gortmaker 80a2e2e35d drivers/edac: Add module.h to mce_amd_inj.c
This file really needs the full module.h header file present, but
was just getting it implicitly before.  Fix it up in advance so we
avoid build failures once the cleanup commit is present.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:45 -04:00
Thomas Renninger 5034086b72 EDAC i7core: Use mce socketid for better compatibility
mce->socketid and cpu_data(mce->cpu).phys_proc_id are the same,
compare with mce_setup (in mce.c):
	m->cpu = m->extcpu = smp_processor_id();
        ...
	m->socketid = cpu_data(m->extcpu).phys_proc_id;

This makes it easier for example for XEN patches to hook into
the MCE subsystem.
Compile tested on x86_64.

Signed-off-by: Thomas Renninger <trenn@suse.de>
CC: JBeulich@novell.com
CC: linux-edac@vger.kernel.org
CC: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31 15:10:05 -02:00
Mauro Carvalho Chehab 27100db0e0 i7core_edac: Don't enable memory scrubbing for Xeon 35xx
Xeon 35xx doesn't mention memory scrub. It seems that only Xeon 55xx
and above supports it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31 15:10:05 -02:00
Samuel Gabrielsson e8b6a12710 i7core_edac: Add scrubbing support
Add scrubbing support to i7core_edac, tested on intel Xeon L5638.

Signed-off-by: Samuel Gabrielsson <samuel.gabrielsson@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31 15:10:05 -02:00
Mauro Carvalho Chehab ddeb3547d4 edac: Move edac main structs to include/linux/edac.h
As we'll need to use those structs for trace functions, they should
be on a more public place. So, move struct mem_ctl_info & friends
to edac.h.

No functional changes on this patch.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Doug Thompson <dougthompson@xmission.com>
2011-10-31 15:10:04 -02:00
Mauro Carvalho Chehab 224e871f36 i7core_edac: Fix oops when trying to inject errors
Error injection needs the pci device 0:0. So, we need to revert
this changeset: 79daef2099.

Tests need to be made to be sure that refcount won't be wrong
as noticed before.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31 15:10:04 -02:00
David Sterba 80b8ce89eb i7core_edac: fix misuse of logical operation in place of bitop
CC: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31 15:10:04 -02:00
Arvind R 6099e419ae edac:i82975x fix 32bit compile and cleanup
the clean up achieves:
  1. fix warning on 32-bit compile
  2. reorder info extraction for clarity
  3. add error-trap diagnostic message
  4. handle ALL modes of memory configurations

Signed-off-by: Arvind R. <arvino55@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-10-29 21:29:42 +02:00
Dan Carpenter 1f6189ed18 amd64_edac: Cleanup return type of amd64_determine_edac_cap()
Sparse complains that edac_cap was declared as dev_type and we are
returning edac_type.  Historically, edac_type was correct but since
then we have changed it to return a bit field.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: http://lkml.kernel.org/r/20111006063025.GA2615@mwanda
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-10-06 12:35:46 +02:00
Borislav Petkov 73ba85937b amd64_edac: Add a fix for Erratum 505
When accessing the scrub rate control register (F3x58) on F15h, the DRAM
controller selector (F1x10C[DctCfgSel]) has to point to DCT0 so that the
scrub rate configuration can take effect. See Erratum 505 in the AMD
F15h revision guide for more details.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-10-06 12:34:05 +02:00
Borislav Petkov b0b07a2bd4 EDAC, MCE, AMD: Simplify NB MCE decoder interface
Drop third nbcfg argument which is old remains and not required anymore.

No functionality change.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-10-06 12:34:04 +02:00
Borislav Petkov 295d8cda26 EDAC, MCE, AMD: Drop local coreid reporting
MCE decoding code is reporting the core which encountered the error
unconditionally now so drop this piece. Besides, it reported the
coreid in the local processor package which is not that valuable as a
datapoint.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-10-06 12:34:03 +02:00
Borislav Petkov 086be786ca EDAC, MCE, AMD: Print valid addr when reporting an error
The MCi_STATUS bank has a AddrV bit which, when set, denotes that the
corresponding MCi_ADDR MSR contains a valid address belonging to the
MCE currently being reported. Dump it since it is definitely relevant
information.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-10-06 12:34:03 +02:00
Borislav Petkov bff7b81246 EDAC, MCE, AMD: Print CPU number when reporting the error
Currently, correctable ECCs go through mcelog and do not print the scary
MCE banner. In that case, however, reporting the core where the CECC
happened is important information so dump it along with the decoded
string albeit at risk of having a minor redundancy.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-10-06 12:34:02 +02:00
Dmitry Eremin-Solenikov ce39508883 cpc925_edac: Support single-processor configurations
If second CPU is not enabled, CPC925 EDAC driver will spill out warnings
about errors on second Processor Interface. Support masking that out,
by detecting at runtime which CPUs are present in device tree.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Harry Ciao <qingtao.cao@windriver.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-09-01 16:00:18 +10:00
Benjamin Herrenschmidt 9bb7361d99 Merge remote-tracking branch 'jwb/next' into next 2011-08-30 15:14:46 +10:00
Mathias Krause 8cf2d2399a i7core_edac: fixed typo in error count calculation
Based on a patch from the PaX Team, found during a clang analysis pass.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: PaX Team <pageexec@freemail.hu>
Cc: stable@kernel.org [v2.6.35+]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-18 14:07:15 -07:00
Mike Williams e57b708bea powerpc/4xx: edac: Add comma to fix build error
Commit 4018294b53 broke the ppc4xx_edac driver at
line 210 where the struct member is missing a comma.

Signed-off-by: Mike Williams <mike@mikebwilliams.com>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
2011-08-11 13:52:03 -04:00
Linus Torvalds a9f729f0e2 Revert "EDAC: Correct Kconfig dependencies"
This reverts commit af9d220bac.

It turns out that one was meant to be applied on top of the edac.git
tree in -next that has more i7core_edac changes, but that wasn't clear
in the original email.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-11 08:58:41 -07:00
Borislav Petkov af9d220bac EDAC: Correct Kconfig dependencies
Both AMD and Intel i7 EDAC drivers use MCE features and are thus
dependent of this functionality present in the kernel. Express this in
Kconfig so that randconfig builds don't break.

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-10 10:57:42 -07:00
Arun Sharma 60063497a9 atomic: use <linux/atomic.h>
This allows us to move duplicated code in <asm/atomic.h>
(atomic_inc_not_zero() for now) to <linux/atomic.h>

Signed-off-by: Arun Sharma <asharma@fb.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:47 -07:00
Kai.Jiang 444d292121 drivers/edac/mpc85xx_edac.c: correct offset_in_page mask bits in edac_mc_handle_ce()
Parameter offset_in_page in edac_mc_handle_ce() should mask the higher
bits above the page size, not the lower bits.  The original input
sometimes causes a crash.

Signed-off-by: Kai.Jiang <Kai.Jiang@freescale.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: Anton Vorontsov <avorontsov@mvista.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:45 -07:00
Joe Perches 28f65c11f2 treewide: Convert uses of struct resource to resource_size(ptr)
Several fixes as well where the +1 was missing.

Done via coccinelle scripts like:

@@
struct resource *ptr;
@@

- ptr->end - ptr->start + 1
+ resource_size(ptr)

and some grep and typing.

Mostly uncompiled, no cross-compilers.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-06-10 14:55:36 +02:00
Lai Jiangshan e2e7709876 edac,rcu: use synchronize_rcu() instead of call_rcu()+rcu_barrier()
synchronize_rcu() does the stuff as needed.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-26 17:12:37 -07:00
Linus Torvalds b7c2f03628 Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  gfs2: Drop __TIME__ usage
  isdn/diva: Drop __TIME__ usage
  atm: Drop __TIME__ usage
  dlm: Drop __TIME__ usage
  wan/pc300: Drop __TIME__ usage
  parport: Drop __TIME__ usage
  hdlcdrv: Drop __TIME__ usage
  baycom: Drop __TIME__ usage
  pmcraid: Drop __DATE__ usage
  edac: Drop __DATE__ usage
  rio: Drop __DATE__ usage
  scsi/wd33c93: Drop __TIME__ usage
  scsi/in2000: Drop __TIME__ usage
  aacraid: Drop __TIME__ usage
  media/cx231xx: Drop __TIME__ usage
  media/radio-maxiradio: Drop __TIME__ usage
  nozomi: Drop __TIME__ usage
  cyclades: Drop __TIME__ usage
2011-05-26 13:19:00 -07:00
Roland Dreier dbee8a0aff x86: remove 32-bit versions of readq()/writeq()
The presense of a writeq() implementation on 32-bit x86 that splits the
64-bit write into two 32-bit writes turns out to break the mpt2sas driver
(and in general is risky for drivers as was discussed in
<http://lkml.kernel.org/r/adaab6c1h7c.fsf@cisco.com>).  To fix this,
revert 2c5643b1c5 ("x86: provide readq()/writeq() on 32-bit too") and
follow-on cleanups.

This unfortunately leads to pushing non-atomic definitions of readq() and
write() to various x86-only drivers that in the meantime started using the
definitions in the x86 version of <asm/io.h>.  However as discussed
exhaustively, this is actually the right thing to do, because the right
way to split a 64-bit transaction is hardware dependent and therefore
belongs in the hardware driver (eg mpt2sas needs a spinlock to make sure
no other accesses occur in between the two halves of the access).

Build tested on 32- and 64-bit x86 allmodconfig.

Link: http://lkml.kernel.org/r/x86-32-writeq-is-broken@mdm.bga.com
Acked-by: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Kashyap Desai <Kashyap.Desai@lsi.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Ravi Anand <ravi.anand@qlogic.com>
Cc: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Acked-by: James Bottomley <James.Bottomley@parallels.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-25 08:39:44 -07:00
Grant Likely b1608d69cb drivercore: revert addition of of_match to struct device
Commit b826291c, "drivercore/dt: add a match table pointer to struct
device" added an of_match pointer to struct device to cache the
of_match_table entry discovered at driver match time.  This was unsafe
because matching is not an atomic operation with probing a driver.  If
two or more drivers are attempted to be matched to a driver at the
same time, then the cached matching entry pointer could get
overwritten.

This patch reverts the of_match cache pointer and reworks all users to
call of_match_device() directly instead.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-05-18 12:32:23 -06:00
Borislav Petkov c1ae68309b amd64_edac: Erratum #637 workaround
F15h CPUs may report a non-DRAM address when reporting an error address
belonging to a CC6 state save area. Add a workaround to detect this
condition and compute the actual DRAM address of the error as documented
in the Revision Guide for AMD Family 15h Models 00h-0Fh Processors.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-04-26 16:18:56 +02:00
Borislav Petkov f08e457cec amd64_edac: Factor in CC6 save area
F15h and later use a portion of DRAM as a CC6 storage area. BIOS
programs D18F1x[17C:140,7C:40] DRAM Base/Limit accordingly by
subtracting the storage area from the DRAM limit setting. However, in
order for edac to consider that part of DRAM too, we need to include it
into the per-node range.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-04-26 16:18:44 +02:00
Borislav Petkov f030ddfb37 amd64_edac: Remove node interleave warning
This warning was wrongfully added for a normal condition - intlvsel
actually selects the destination node when node interleaving is enabled
and it is not a mismatch. For a detailed example, see section 2.8.10.2
"Node Interleaving" in F10h BKDG.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-04-26 16:18:12 +02:00
Markus Trippelsdorf 4949603a6f EDAC: Remove debugging output in scrub rate handling
This patch removes superfluous debugging output in the sysfs scrub rate
handler. It also consolidates the error handling in the scrub rate
accessors.

Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-04-21 12:44:58 +02:00
Michal Marek 152ba39422 edac: Drop __DATE__ usage
The kernel already prints its build timestamp during boot, no need to
repeat it in random drivers and produce different object files each
time.

Cc: Doug Thompson <dougthompson@xmission.com>
Cc: bluesmoke-devel@lists.sourceforge.net
Cc: linux-edac@vger.kernel.org
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-04-19 00:23:22 +02:00
Linus Torvalds 42933bac11 Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6
* 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6:
  Fix common misspellings
2011-04-07 11:14:49 -07:00
Kumar Gala a94d7b3506 edac/mpc85xx: Limit setting/clearing of HID1[RFXE] to e500v1/v2 cores
Only the e500v1/v2 cores have HID1[RXFE] so we should attempt to set or
clear this register bit on them.  Otherwise we get crashes like:

NIP: c0579f84 LR: c006d550 CTR: c0579f84
REGS: ef857ec0 TRAP: 0700   Not tainted  (2.6.38.2-00072-gf15ba3c)
MSR: 00021002 <ME,CE>  CR: 22044022  XER: 00000000
TASK = ef8559c0[1] 'swapper' THREAD: ef856000 CPU: 0
GPR00: c006d538 ef857f70 ef8559c0 00000000 00000004 00000000 00000000 00000000
GPR08: c0590000 c30170a8 00000000 c30170a8 00000001 0fffe000 00000000 00000000
GPR16: 00000000 7ffa0e60 00000000 00000000 7ffb0bd8 7ff3b844 c05be000 00000000
GPR24: 00000000 00000000 c05c28b0 c0579fac 00000000 00029002 00000000 c0579f84
NIP [c0579f84] mpc85xx_mc_clear_rfxe+0x0/0x28
LR [c006d550] on_each_cpu+0x34/0x50
Call Trace:
[ef857f70] [c006d538] on_each_cpu+0x1c/0x50 (unreliable)
[ef857f90] [c057a070] mpc85xx_mc_init+0xc4/0xdc
[ef857fa0] [c0001cd4] do_one_initcall+0x34/0x1a8
[ef857fd0] [c055d9d8] kernel_init+0x17c/0x218
[ef857ff0] [c000cda4] kernel_thread+0x4c/0x68
Instruction dump:
40be0018 3c60c052 3863c70c 4be9baad 3be0ffed 4bd7c99d 80010014 7fe3fb78
83e1000c 38210010 7c0803a6 4e800020 <7c11faa6> 54290024 81290008
3d60c06e
Oops: Exception in kernel mode, sig: 4 [#2]
---[ end trace 49ff3b8f93efde1a ]---

Also use the HID1_RFXE define rather than a magic number.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-04-04 09:31:35 -05:00
Lucas De Marchi 25985edced Fix common misspellings
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 11:26:23 -03:00
Borislav Petkov a9f0fbe2bb amd64_edac: Fix potential memleak
We check the pointers together but at least one of them could be invalid
due to failed allocation. Since we cannot continue if either of the two
allocations has failed, exit early by freeing them both.

Cc: <stable@kernel.org> # 38.x
Reported-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-29 18:19:06 +02:00
Linus Torvalds e16b396ce3 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (47 commits)
  doc: CONFIG_UNEVICTABLE_LRU doesn't exist anymore
  Update cpuset info & webiste for cgroups
  dcdbas: force SMI to happen when expected
  arch/arm/Kconfig: remove one to many l's in the word.
  asm-generic/user.h: Fix spelling in comment
  drm: fix printk typo 'sracth'
  Remove one to many n's in a word
  Documentation/filesystems/romfs.txt: fixing link to genromfs
  drivers:scsi Change printk typo initate -> initiate
  serial, pch uart: Remove duplicate inclusion of linux/pci.h header
  fs/eventpoll.c: fix spelling
  mm: Fix out-of-date comments which refers non-existent functions
  drm: Fix printk typo 'failled'
  coh901318.c: Change initate to initiate.
  mbox-db5500.c Change initate to initiate.
  edac: correct i82975x error-info reported
  edac: correct i82975x mci initialisation
  edac: correct commented info
  fs: update comments to point correct document
  target: remove duplicate include of target/target_core_device.h from drivers/target/target_core_hba.c
  ...

Trivial conflict in fs/eventpoll.c (spelling vs addition)
2011-03-18 10:37:40 -07:00
Linus Torvalds 08351fc6a7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: (27 commits)
  arch/tile: support newer binutils assembler shift semantics
  arch/tile: fix deadlock bugs in rwlock implementation
  drivers/edac: provide support for tile architecture
  tile on-chip network driver: sync up with latest fixes
  arch/tile: support 4KB page size as well as 64KB
  arch/tile: add some more VMSPLIT options and use consistent naming
  arch/tile: fix some comments and whitespace
  arch/tile: export some additional module symbols
  arch/tile: enhance existing finv_buffer_remote() routine
  arch/tile: fix two bugs in the backtracer code
  arch/tile: use extended assembly to inline __mb_incoherent()
  arch/tile: use a cleaner technique to enable interrupt for cpu_idle()
  arch/tile: sync up with <arch/sim.h> and <arch/sim_def.h> changes
  arch/tile: fix reversed test of strict_strtol() return value
  arch/tile: avoid a simulator warning during bootup
  arch/tile: export <asm/hardwall.h> to userspace
  arch/tile: warn and retry if an IPI is not accepted by the target cpu
  arch/tile: stop disabling INTCTRL_1 interrupts during hypervisor downcalls
  arch/tile: fix __ndelay etc to work better
  arch/tile: bug fix: exec'ed task thought it was still single-stepping
  ...

Fix up trivial conflict in arch/tile/kernel/vmlinux.lds.S (percpu
alignment vs section naming convention fix)
2011-03-17 19:34:12 -07:00
Linus Torvalds 978ca164bd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (38 commits)
  amd64_edac: Fix decode_syndrome types
  amd64_edac: Fix DCT argument type
  amd64_edac: Fix ranges signedness
  amd64_edac: Drop local variable
  amd64_edac: Fix PCI config addressing types
  amd64_edac: Fix DRAM base macros
  amd64_edac: Fix node id signedness
  amd64_edac: Drop redundant declarations
  amd64_edac: Enable driver on F15h
  amd64_edac: Adjust ECC symbol size to F15h
  amd64_edac: Simplify scrubrate setting
  PCI: Rename CPU PCI id define
  amd64_edac: Improve DRAM address mapping
  amd64_edac: Sanitize ->read_dram_ctl_register
  amd64_edac: Adjust sys_addr to chip select conversion routine to F15h
  amd64_edac: Beef up early exit reporting
  amd64_edac: Revamp online spare handling
  amd64_edac: Fix channel interleave removal
  amd64_edac: Correct node interleaving removal
  amd64_edac: Add support for interleaved region swapping
  ...

Fix up trivial conflict in include/linux/pci_ids.h due to
AMD_15H_NB_MISC being renamed as AMD_15H_NB_F3 next to the new
AMD_15H_NB_LINK entry.
2011-03-17 17:21:32 -07:00
Borislav Petkov d34a6ecd45 amd64_edac: Fix decode_syndrome types
Those should all be unsigned.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:40 +01:00
Borislav Petkov 8c6717510f amd64_edac: Fix DCT argument type
Fix amd64_debug_display_dimm_sizes() arguments order per convention (pvt
is always first). Also, the now second arg denotes the DCT so adjust its
type.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:34 +01:00
Borislav Petkov e761359a25 amd64_edac: Fix ranges signedness
The dram ranges make sense only as an unsigned type.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:33 +01:00
Borislav Petkov 972ea17ab9 amd64_edac: Drop local variable
Use the macro directly instead

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:32 +01:00
Borislav Petkov 71d2a32e8e amd64_edac: Fix PCI config addressing types
Adjust argument types to the PCI config API's types.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:31 +01:00
Borislav Petkov 151fa71c58 amd64_edac: Fix DRAM base macros
Return unsigned u8 values only.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:30 +01:00
Borislav Petkov b487c33e55 amd64_edac: Fix node id signedness
A node id can never be negative since we use it as an index into
the DRAM ranges array. This also makes one of the BUG_ON conditions
redundant.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:28 +01:00
Borislav Petkov d88977a9c4 amd64_edac: Drop redundant declarations
Those were moved to the mce_amd.h header.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:27 +01:00
Borislav Petkov df71a05324 amd64_edac: Enable driver on F15h
Add the PCI device ids required for driver registration. Remove
pvt->ctl_name and use the family descriptor directly, instead. Then,
bump driver version and fixup its format. Finally, enable DRAM ECC
decoding on F15h.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:26 +01:00
Borislav Petkov a3b7db09a6 amd64_edac: Adjust ECC symbol size to F15h
F15h has the same ECC symbol size options as F10h revD and later so
adjust checks to that. Simplify code a bit.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:26 +01:00
Borislav Petkov 87b3e0e6e4 amd64_edac: Simplify scrubrate setting
Drop per-instance variable and compute min scrubrate dynamically.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:25 +01:00
Borislav Petkov 41d8bfaba7 amd64_edac: Improve DRAM address mapping
Drop static tables which map the bits in F2x80 to a chip select size in
favor of functions doing the mapping with some bit fiddling. Also, add
F15 support.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:24 +01:00
Borislav Petkov 5a5d237169 amd64_edac: Sanitize ->read_dram_ctl_register
This function is relevant for F10h and higher, and it has only one
callsite so drop its function pointer from the low_ops struct.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:23 +01:00
Borislav Petkov b15f0fcab1 amd64_edac: Adjust sys_addr to chip select conversion routine to F15h
F15h sys_addr to chip select mapping is almost identical to F10h's so
reuse that. Rename functions on that path accordingly.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:22 +01:00
Borislav Petkov 355fba6005 amd64_edac: Beef up early exit reporting
Add paranoid checks for the sys address before going off and decoding
it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:22 +01:00
Borislav Petkov 614ec9d853 amd64_edac: Revamp online spare handling
Replace per-DCT macros with smarter ones, drop hack and look for the
spare rank on all chip selects on a channel.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:21 +01:00
Borislav Petkov 5d4b58e84a amd64_edac: Fix channel interleave removal
Remove the channel interleave select bit properly. See
F2x110[DctSelIntLvAddr] for details.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:21 +01:00
Borislav Petkov e2f79dbdfb amd64_edac: Correct node interleaving removal
When node interleaving is enabled, a subset of the addr[14:12] bits has
to be removed in order to get the normalized DCT address of the DRAM
channel. The actual number of bits to remove is determined by F1x[1,
0][7C:40][IntlvEn]. Do this correctly.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:20 +01:00
Borislav Petkov 95b0ef55cd amd64_edac: Add support for interleaved region swapping
On revC3 and revE Fam10h machines and later, non-interleaved graphics
framebuffer memory under the 16G mark can be swapped with a region
located at the bottom of memory so that the GPU can use the interleaved
region and thus two channels. Add support for that.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:20 +01:00
Borislav Petkov 700466249f amd64_edac: Unify get_error_address
The address bits from MC4_STATUS differ only between K8 and the rest so
no need for a per-family method.

No functional change.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:19 +01:00
Borislav Petkov f192c7b16c amd64_edac: Simplify decoding path
Use the struct mce directly instead of copying from it into a custom
struct err_regs.

No functionality change.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:19 +01:00
Borislav Petkov 7d20d14da1 amd64_edac: Adjust channel counting to F15h
The only difference is that F10h used to sport ganged DCTs and F15h
doesn't so adjust the F10h routine and reuse it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:19 +01:00
Borislav Petkov 5980bb9cd8 amd64_edac: Cleanup old defines cruft
Remove unused defines, drop family names from define names.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:18 +01:00
Borislav Petkov bcd781f46a amd64_edac: Cleanup NBSH cruft
Remove reporting of errors with UC bit set - this is done by the MCE
decoding code anyway and this driver deals with DRAM ECC errors only. UC
(NB uncorrectable error) doesn't necessarily mean it is a DRAM error.
Remove unused macros while at it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:17 +01:00
Borislav Petkov a97fa68ec4 amd64_edac: Cleanup NBCFG handling
The fact whether we are chipkill capable or not does not have any
bearing when computing the channel index on a ganged DCT configuration
so remove that. Also, simplify debug statements. Finally, remove old
error injection leftovers, while at it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:16 +01:00
Borislav Petkov c9f4f26eae amd64_edac: Cleanup NBCTL code
Remove family names from macro names, drop single bit defines and
comment their meaning instead.

No functional change.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:15 +01:00
Borislav Petkov 78da121e15 amd64_edac: Cleanup DCT Select Low/High code
Shorten macro names, remove family name from macros, fix macro
arguments, shorten debug strings.

No functionality change.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:15 +01:00
Borislav Petkov cb32850744 amd64_edac: Cleanup Dram Configuration registers handling
* Restrict DCT ganged mode check since only Fam10h supports it
* Adjust DRAM type detection for BD since it only supports DDR3
* Remove second and thus unneeded DCLR read in k8_early_channel_count() - we do
  that in read_mc_regs()
* Cleanup comments and remove family names from register macros
* Remove unused defines

There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:14 +01:00
Borislav Petkov 525a1b20a6 amd64_edac: Cleanup DBAM handling
Do not read DBAM regs twice and simplify code around them.

There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:14 +01:00
Borislav Petkov f678b8ccce amd64_edac: Replace huge bitmasks with a macro
Replace hard to read hex constants with a continuous masks macro.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:14 +01:00
Borislav Petkov c8e518d567 amd64_edac: Sanitize f10_get_base_addr_offset
This function maps the system address to the normalized DCT address.
Document what the code does for more clarity and wrap insane bitmasks in
a more understandable macro which generates them. Also, reduce number of
arguments passed to the function. Finally, rename this function to what
it actually does.

No functional change.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:13 +01:00
Borislav Petkov 229a7a11ac amd64_edac: Sanitize channel extraction
Cleanup and simplify f10_determine_channel(); make it more readable.
Also drop f10_map_intlv_en_to_shift() in favor of simply counting the
bits in F1x124[DramIntlvEn] which is equivalent.

There should be no functionality change resulting from this patch.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:13 +01:00
Borislav Petkov 11c75eadaf amd64_edac: Cleanup chipselect handling
Add a struct representing the DRAM chip select base/limit register
pairs. Concentrate all CS handling in a single function. Also, add CS
looping macros for cleaner, more readable code. While at it, adjust code
to F15h. Finally, do smaller macro names cleanups (remove family names
from register macros) and debug messages clarification.

No functional change.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:12 +01:00
Borislav Petkov bc21fa5787 amd64_edac: Cleanup DHAR handling
Adjust to F15h, simplify code, fixup macros.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:12 +01:00
Borislav Petkov 7f19bf755c amd64_edac: Remove DRAM base/limit subfields caching
Add a struct representing the DRAM base/limit range pairs and remove all
cached subfields. Replace them with accessor functions, which actually
saves us some space:

   text    data     bss     dec     hex filename
  14712    1577     336   16625    40f1 drivers/edac/amd64_edac_mod.o.after
  14831    1609     336   16776    4188 drivers/edac/amd64_edac_mod.o.before

Also, it simplifies the code a lot allowing to merge the K8 and F10h
routines.

No functional change.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:11 +01:00
Borislav Petkov b2b0c60543 amd64_edac: Add support for F15h DCT PCI config accesses
F15h "multiplexes" between the configuration space of the two DRAM
controllers by toggling D18F1x10C[DctCfgSel] while F10h has a different
set of registers for DCT0, and DCT1 in extended PCI config space.

Add DCT configuration space accessors per family thus wrapping all the
different access prerequisites. Clean up code while at it, shorten
names.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:11 +01:00
Borislav Petkov b6a280bb96 EDAC: Shut up sysfs registration debug code
Raise the debug level of these routines so that their output get issued
out only when the highest debug level is selected. Otherwise, don't
pollute driver debug output.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-17 14:46:10 +01:00
Chris Metcalf 5c77075548 drivers/edac: provide support for tile architecture
Add tile support for the EDAC driver, which provides unified system
error (memory, PCI, etc.) reporting. For now, the TILEPro port
reports memory correctable error (CE) only.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2011-03-10 13:30:14 -05:00
Grant Likely 000061245a dt/powerpc: Eliminate users of of_platform_{,un}register_driver
Get rid of old users of of_platform_driver in arch/powerpc.  Most
of_platform_driver users can be converted to use the platform_bus
directly.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-02-28 01:36:39 -07:00
Arvind R cb60a42269 edac: correct i82975x error-info reported
to edac-core

fix the totally wrong info w.r.t page,row,dimm-label previously reported to
edac-core by i82975x driver

Signed-off-by: Arvind R. <arvino55@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-02-17 16:47:04 +01:00
Arvind R da95b3d21f edac: correct i82975x mci initialisation
corrected mtype, and added dev_name,scrubmode initialisers
in i82975x struct mem_ctl initialisation

Signed-off-by: Arvind R. <arvino55@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-02-17 16:46:22 +01:00
Arvind R 7ba9957581 edac: correct commented info
wrong comments in i82975x driver corrected

Signed-off-by: Arvind R. <arvino55@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-02-17 16:44:45 +01:00
Jiri Kosina 0a9d59a246 Merge branch 'master' into for-next 2011-02-15 10:24:31 +01:00
Borislav Petkov 4d7963648f amd64_edac: Fix DIMMs per DCTs output
amd64_debug_display_dimm_sizes() reports the distribution of the DIMMs
on each DRAM controller and its chip select sizes. Thus, the last don't
have anything to do with whether we're running in ganged DCT mode or not
- their sizes don't change all of a sudden. Fix that by removing the
ganged-check and dump DCT0's config for DCT1 when in ganged mode since
they're identical.

Reported-and-tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-02-10 14:41:49 +01:00
Arvind R 25527885e3 edac: i82975x author/maintainer email address change
edac-i82975x author/maintainer email address change

Signed-off-by: Arvind R. <arvino55@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-01-24 16:17:51 +01:00
Jesper Juhl 42b16b3fbb Kill off warning: ‘inline’ is not at beginning of declaration
Fix a bunch of
	warning: ‘inline’ is not at beginning of declaration
messages when building a 'make allyesconfig' kernel with -Wextra.

These warnings are trivial to kill, yet rather annoying when building with
-Wextra.
The more we can cut down on pointless crap like this the better (IMHO).

A previous patch to do this for a 'allnoconfig' build has already been
merged. This just takes the cleanup a little further.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-01-19 15:43:08 +01:00
Linus Torvalds 008d23e485 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits)
  Documentation/trace/events.txt: Remove obsolete sched_signal_send.
  writeback: fix global_dirty_limits comment runtime -> real-time
  ppc: fix comment typo singal -> signal
  drivers: fix comment typo diable -> disable.
  m68k: fix comment typo diable -> disable.
  wireless: comment typo fix diable -> disable.
  media: comment typo fix diable -> disable.
  remove doc for obsolete dynamic-printk kernel-parameter
  remove extraneous 'is' from Documentation/iostats.txt
  Fix spelling milisec -> ms in snd_ps3 module parameter description
  Fix spelling mistakes in comments
  Revert conflicting V4L changes
  i7core_edac: fix typos in comments
  mm/rmap.c: fix comment
  sound, ca0106: Fix assignment to 'channel'.
  hrtimer: fix a typo in comment
  init/Kconfig: fix typo
  anon_inodes: fix wrong function name in comment
  fix comment typos concerning "consistent"
  poll: fix a typo in comment
  ...

Fix up trivial conflicts in:
 - drivers/net/wireless/iwlwifi/iwl-core.c (moved to iwl-legacy.c)
 - fs/ext4/ext4.h

Also fix missed 'diabled' typo in drivers/net/bnx2x/bnx2x.h while at it.
2011-01-13 10:05:56 -08:00
Linus Torvalds 128283a47e Merge branch 'mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
* 'mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC, MCE: Fix NB error formatting
  EDAC, MCE: Use BIT_64() to eliminate warnings on 32-bit
  EDAC, MCE: Enable MCE decoding on F15h
  EDAC, MCE: Allow F15h bank 6 MCE injection
  EDAC, MCE: Shorten error report formatting
  EDAC, MCE: Overhaul error fields extraction macros
  EDAC, MCE: Add F15h FP MCE decoder
  EDAC, MCE: Add F15 EX MCE decoder
  EDAC, MCE: Add an F15h NB MCE decoder
  EDAC, MCE: No F15h LS MCE decoder
  EDAC, MCE: Add F15h CU MCE decoder
  EDAC, MCE: Add F15h IC MCE decoder
  EDAC, MCE: Add F15h DC MCE decoder
  EDAC, MCE: Select extended error code mask
2011-01-07 14:54:03 -08:00
Borislav Petkov 6d5db46687 EDAC, MCE: Fix NB error formatting
Minor formatting fixup since the information which core was associated
with the MCE is not always valid.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:26 +01:00
Randy Dunlap 50adbbd8a8 EDAC, MCE: Use BIT_64() to eliminate warnings on 32-bit
Building for X86_32 produces shift count warnings, so use BIT_64() to
eliminate the warnings.

drivers/edac/mce_amd.c:778: warning: left shift count >= width of type
drivers/edac/mce_amd.c:778: warning: left shift count >= width of type

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: bluesmoke-devel@lists.sourceforge.net
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:25 +01:00
Borislav Petkov bad11e0318 EDAC, MCE: Enable MCE decoding on F15h
Now that everything is inplace, enable MCE decoding on F15h. Make
initcall routine a bit more readable.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:24 +01:00
Borislav Petkov 1b07ca47ff EDAC, MCE: Allow F15h bank 6 MCE injection
F15h adds a sixth MCE bank: adjust bank number check in the injection
code.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:23 +01:00
Borislav Petkov fa7ae8cc8c EDAC, MCE: Shorten error report formatting
Shorten up MCi_STATUS flags and add BD's new deferred and poison types.
Also, simplify formatting.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:22 +01:00
Borislav Petkov 6245288232 EDAC, MCE: Overhaul error fields extraction macros
Make macro names shorter thus making code shorter and more clear.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:21 +01:00
Borislav Petkov b8f85c477b EDAC, MCE: Add F15h FP MCE decoder
Add decoder for FP MCEs.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:20 +01:00
Borislav Petkov 8259a7e572 EDAC, MCE: Add F15 EX MCE decoder
Integrate the single FIROB signature into an expanded table along with
the new BD MCE types.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:19 +01:00
Borislav Petkov 05cd667d66 EDAC, MCE: Add an F15h NB MCE decoder
by (almost) reusing the F10h one since the signatures are the same.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:18 +01:00
Borislav Petkov b18434cad1 EDAC, MCE: No F15h LS MCE decoder
F15h BD doesn't generate LS MCEs so warn about it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:17 +01:00
Borislav Petkov 70fdb494aa EDAC, MCE: Add F15h CU MCE decoder
MCE bank 2 is redefined from a BU to a CU (Combined Unit) bank on F15h.
Add a decoder function for CU MCEs.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:16 +01:00
Borislav Petkov 86039cd401 EDAC, MCE: Add F15h IC MCE decoder
Add support for decoding F15h IC MCEs.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:15 +01:00
Borislav Petkov 25a4f8b059 EDAC, MCE: Add F15h DC MCE decoder
Add a decoder for F15h DC MCEs to support the new types of DC MCEs
introduced by the BD microarchitecture.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:14 +01:00
Borislav Petkov 2be64bfac7 EDAC, MCE: Select extended error code mask
F15h enlarges the extended error code of an MCE to a 5-bit field
(MCi_STATUS[20:16]). Add a mask variable which default 0xf is overridden
on F15h.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:54:12 +01:00
Borislav Petkov a135cef79a amd64_edac: Disable DRAM ECC injection on K8
K8 does not allow for an atomic RMW to a cacheline as F10h does so
disable the error injection interface for it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:38:46 +01:00
Borislav Petkov 390944439f EDAC: Fixup scrubrate manipulation
Make the ->{get|set}_sdram_scrub_rate return the actual scrub rate
bandwidth it succeeded setting and remove superfluous arg pointer used
for that. A negative value returned still means that an error occurred
while setting the scrubrate. Document this for future reference.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:38:31 +01:00
Borislav Petkov 360b7f3c60 amd64_edac: Remove two-stage initialization
Now that all prerequisites are in place, drop the two-stage driver
instances initialization in favor of the following simple init sequence:

1. Probe PCI device: we only test ECC capabilities here and if none exit
early.

2. If the hw supports ECC and it is/can be enabled, we init the per-node
instance.

Remove "amd64_" prefix from static functions touched, while at it.

There actually should be no visible functional change resulting from
this patch.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:34:03 +01:00
Borislav Petkov 2299ef7114 amd64_edac: Check ECC capabilities initially
Rework the code to check the hardware ECC capabilities at PCI probing
time. We do all further initialization only if we actually can/have ECC
enabled.

While at it:
0. Fix function naming.
1. Simplify/clarify debug output.
2. Remove amd64_ prefix from the static functions
3. Reorganize code.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:34:02 +01:00
Borislav Petkov ae7bb7c679 amd64_edac: Carve out ECC-related hw settings
This is in preparation for the init path reorganization where we want
only to

1) test whether a particular node supports ECC
2) can it be enabled

and only then do the necessary allocation/initialization. For that,
we need to decouple the ECC settings of the node from the instance's
descriptor.

The should be no functional change introduced by this patch.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:34:00 +01:00
Borislav Petkov f1db274e1b amd64_edac: Remove PCI ECS enabling functions
PCI ECS is being enabled by default since 2.6.26 on AMD so this code is
just superfluous now, remove it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:33:59 +01:00
Borislav Petkov 027dbd6f5d amd64_edac: Remove explicit Kconfig PCI dependency
AMD_NB pulls in the dependency on PCI. Clarify/fix help text while at it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:33:58 +01:00
Borislav Petkov cc4d8860fc amd64_edac: Allocate driver instances dynamically
Remove static allocation in favor of dynamically allocating space for as
many driver instances as northbridges present on the system.

There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:33:57 +01:00
Borislav Petkov 24f9a7fe3f amd64_edac: Rework printk macros
Add a macro per printk level, shorten up error messages. Add relevant
information to KERN_INFO level. No functional change.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:33:56 +01:00
Borislav Petkov 8d5b5d9c7b amd64_edac: Rename CPU PCI devices
Rename variables representing PCI devices to their BKDG names for faster
search and shorter, clearer code.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:33:54 +01:00
Borislav Petkov b8cfa02f83 amd64_edac: Concentrate per-family init even more
Move the remaining per-family init code into the proper place and
simplify the rest of the initialization. Reorganize error handling in
amd64_init_one_instance().

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:33:53 +01:00
Borislav Petkov bbd0c1f675 amd64_edac: Cleanup the CPU PCI device reservation
Shorten code and clarify comments, return proper -E* values on error.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:33:52 +01:00
Borislav Petkov 0092b20d4c amd64_edac: Simplify CPU family detection
Concentrate CPU family detection in the per-family init function.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:33:51 +01:00
Borislav Petkov 395ae783b3 amd64_edac: Add per-family init function
Run a per-family init function which does all the settings based on
the family this driver instance is running on. Move the scrubrate
calculation in it and simplify code.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:33:50 +01:00
Borislav Petkov 9f56da0e3c amd64_edac: Use cached extended CPU model
... instead of computing it needlessly again.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:33:49 +01:00
Borislav Petkov 3ab0e7dc2e amd64_edac: Remove F11h support
F11h doesn't support DRAM ECC so whack it away.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-01-07 11:33:47 +01:00
Linus Torvalds 42cbd8efb0 Merge branch 'x86-amd-nb-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-amd-nb-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, cacheinfo: Cleanup L3 cache index disable support
  x86, amd-nb: Cleanup AMD northbridge caching code
  x86, amd-nb: Complete the rename of AMD NB and related code
2011-01-06 10:50:28 -08:00
David Sterba e7bf068aa3 i7core_edac: fix typos in comments
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-12-28 01:20:51 +01:00
Jiri Kosina 4b7bd36470 Merge branch 'master' into for-next
Conflicts:
	MAINTAINERS
	arch/arm/mach-omap2/pm24xx.c
	drivers/scsi/bfa/bfa_fcpim.c

Needed to update to apply fixes for which the old branch was too
outdated.
2010-12-22 18:57:02 +01:00
Borislav Petkov e726f3c368 amd64_edac: Fix interleaving check
When matching error address to the range contained by one memory node,
we're in valid range when node interleaving

1. is disabled, or
2. enabled and when the address bits we interleave on match the
interleave selector on this node (see the "Node Interleaving" section in
the BKDG for an enlightening example).

Thus, when we early-exit, we need to reverse the compound logic
statement properly.

Cc: <stable@kernel.org>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-12-08 19:52:54 +01:00
Andrei Konovalov 76f04f2591 EDAC: Correct MiB_TO_PAGES() macro
This corrects the misprint introduced when moving '#if
PAGE_SHIFT' from i7core_edac.c to edac_core.h (commit
e9144601d3)

Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Andrei Konovalov <akonovalov@mvista.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-12-08 19:52:53 +01:00
Borislav Petkov bb31b3122c EDAC: Fix workqueue-related crashes
00740c5854 changed edac_core to
un-/register a workqueue item only if a lowlevel driver supplies a
polling routine. Normally, when we remove a polling low-level driver, we
go and cancel all the queued work. However, the workqueue unreg happens
based on the ->op_state setting, and edac_mc_del_mc() sets this to
OP_OFFLINE _before_ we cancel the work item, leading to NULL ptr oops on
the workqueue list.

Fix it by putting the unreg stuff in proper order.

Cc: <stable@kernel.org> #36.x
Reported-and-tested-by: Tobias Karnat <tobias.karnat@googlemail.com>
LKML-Reference: <1291201307.3029.21.camel@Tobias-Karnat>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-12-08 19:52:27 +01:00
Axel Lin df4b2a30e0 EDAC, MCE: Fix edac_init_mce_inject error handling
Otherwise, variable i will be -1 inside the latest iteration of the
while loop.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-11-22 15:35:32 +01:00
Tracey Dent f570e1dd84 EDAC: Remove deprecated kbuild goal definitions
Change EDAC's Makefile to use <modules>-y instead of
<modules>-objs because -objs is deprecated and not mentioned in
Documentation/kbuild/makefiles.txt.

 [bp: Fixup commit message]
 [bp: Fixup indentation]

Signed-off-by: Tracey Dent <tdent48227@gmail.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-11-22 15:35:31 +01:00
Hans Rosenfeld 9653a5c76c x86, amd-nb: Cleanup AMD northbridge caching code
Support more than just the "Misc Control" part of the northbridges.
Support more flags by turning "gart_supported" into a single bit flag
that is stored in a flags member. Clean up related code by using a set
of functions (amd_nb_num(), amd_nb_has_feature() and node_to_amd_nb())
instead of accessing the NB data structures directly. Reorder the
initialization code and put the GART flush words caching in a separate
function.

Signed-off-by: Hans Rosenfeld <hans.rosenfeld@amd.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-11-18 15:53:05 +01:00
Hans Rosenfeld eec1d4fa00 x86, amd-nb: Complete the rename of AMD NB and related code
Not only the naming of the files was confusing, it was even more so for
the function and variable names.

Renamed the K8 NB and NUMA stuff that is also used on other AMD
platforms. This also renames the CONFIG_K8_NUMA option to
CONFIG_AMD_NUMA and the related file k8topology_64.c to
amdtopology_64.c. No functional changes intended.

Signed-off-by: Hans Rosenfeld <hans.rosenfeld@amd.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-11-18 15:53:04 +01:00
Uwe Kleine-König b595076a18 tree-wide: fix comment/printk typos
"gadget", "through", "command", "maintain", "maintain", "controller", "address",
"between", "initiali[zs]e", "instead", "function", "select", "already",
"equal", "access", "management", "hierarchy", "registration", "interest",
"relative", "memory", "offset", "already",

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-11-01 15:38:34 -04:00
Linus Torvalds da62aa69c1 Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/i7core
* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/i7core: (34 commits)
  i7core_edac: return -ENODEV when devices were already probed
  i7core_edac: properly terminate pci_dev_table
  i7core_edac: Avoid PCI refcount to reach zero on successive load/reload
  i7core_edac: Fix refcount error at PCI devices
  i7core_edac: it is safe to i7core_unregister_mci() when mci=NULL
  i7core_edac: Fix an oops at i7core probe
  i7core_edac: Remove unused member channels in i7core_pvt
  i7core_edac: Remove unused arg csrow from get_dimm_config
  i7core_edac: Reduce args of i7core_register_mci
  i7core_edac: Introduce i7core_unregister_mci
  i7core_edac: Use saved pointers
  i7core_edac: Check probe counter in i7core_remove
  i7core_edac: Call pci_dev_put() when alloc_i7core_dev()  failed
  i7core_edac: Fix error path of i7core_register_mci
  i7core_edac: Fix order of lines in i7core_register_mci
  i7core_edac: Always do get/put for all devices
  i7core_edac: Introduce i7core_pci_ctl_create/release
  i7core_edac: Introduce free_i7core_dev
  i7core_edac: Introduce alloc_i7core_dev
  i7core_edac: Reduce args of i7core_get_onedevice
  ...
2010-10-26 10:13:48 -07:00
Linus Torvalds 229aebb873 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
  Update broken web addresses in arch directory.
  Update broken web addresses in the kernel.
  Revert "drivers/usb: Remove unnecessary return's from void functions" for musb gadget
  Revert "Fix typo: configuation => configuration" partially
  ida: document IDA_BITMAP_LONGS calculation
  ext2: fix a typo on comment in ext2/inode.c
  drivers/scsi: Remove unnecessary casts of private_data
  drivers/s390: Remove unnecessary casts of private_data
  net/sunrpc/rpc_pipe.c: Remove unnecessary casts of private_data
  drivers/infiniband: Remove unnecessary casts of private_data
  drivers/gpu/drm: Remove unnecessary casts of private_data
  kernel/pm_qos_params.c: Remove unnecessary casts of private_data
  fs/ecryptfs: Remove unnecessary casts of private_data
  fs/seq_file.c: Remove unnecessary casts of private_data
  arm: uengine.c: remove C99 comments
  arm: scoop.c: remove C99 comments
  Fix typo configue => configure in comments
  Fix typo: configuation => configuration
  Fix typo interrest[ing|ed] => interest[ing|ed]
  Fix various typos of valid in comments
  ...

Fix up trivial conflicts in:
	drivers/char/ipmi/ipmi_si_intf.c
	drivers/usb/gadget/rndis.c
	net/irda/irnet/irnet_ppp.c
2010-10-24 13:41:39 -07:00
Linus Torvalds 8de547e182 Merge branch 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/edac
* 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/edac: (25 commits)
  i7300_edac: Properly initialize per-csrow memory size
  V4L/DVB: i7300_edac: better initialize page counts
  MAINTAINERS: Add maintainer for i7300-edac driver
  i7300-edac: CodingStyle cleanup
  i7300_edac: Improve comments
  i7300_edac: Cleanup: reorganize the file contents
  i7300_edac: Properly detect channel on CE errors
  i7300_edac: enrich FBD error info for corrected errors
  i7300_edac: enrich FBD error info for fatal errors
  i7300_edac: pre-allocate a buffer used to prepare err messages
  i7300_edac: Fix MTR x4/x8 detection logic
  i7300_edac: Make the debug messages coherent with the others
  i7300_edac: Cleanup: remove get_error_info logic
  i7300_edac: Add a code to cleanup error registers
  i7300_edac: Add support for reporting FBD errors
  i7300_edac: Properly detect the type of error correction
  i7300_edac: Detect if the device is on single mode
  i7300_edac: Adds detection for enhanced scrub mode on x8
  i7300_edac: Clear the error bit after reading
  i7300_edac: Add error detection code for global errors
  ...
2010-10-24 13:06:57 -07:00
Mauro Carvalho Chehab 76a7bd8113 i7core_edac: return -ENODEV when devices were already probed
Due to the nature of i7core, we need to probe and attach all PCI
devices used by this driver during the first time probe is called.
However, PCI core will call the probe routine one time for each CPU
socket. If we return -EINVAL to those calls, it would seem that the
driver fails, when, in fact, there's no more devices left to initialize.

Changing the return code to -ENODEV solves this issue.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:36:19 -02:00
Mauro Carvalho Chehab 3c52cc57cc i7core_edac: properly terminate pci_dev_table
At pci_xeon_fixup(), it waits for a null-terminated table, while at
i7core_get_all_devices, it just do a for 0..ARRAY_SIZE. As other tables
are zero-terminated, change it to be terminate with 0 as well, and fixes
a bug where it may be running out of the table elements.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:31:50 -02:00
Mauro Carvalho Chehab a3e1541637 i7core_edac: Avoid PCI refcount to reach zero on successive load/reload
That's a nasty bug that took me a lot of time to track, and whose
solution took just one line to solve. The best fragrances and the worse
poisons are shipped on the smalest bottles.

The drivers/pci/quick.c implements the pci_get_device function. The normal
behavior is that you call it, the function returns you a pdev pointer
and increment pdev->kobj.kref.refcount of the pci device. However,
if you want to keep searching an object, you need to pass the previous
pdev function to the search.

When you use a not null pointer to pdev "from" field, pci_get_device
will decrement pdev->kobj.kref.refcount, assuming that the driver won't
be using the previous pdev.

The solution is simple: we just need to call pci_dev_get() manually,
for the pdev's that the driver will actually use.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:41 -02:00
Mauro Carvalho Chehab 79daef2099 i7core_edac: Fix refcount error at PCI devices
Probably due to a bug or some testing logic at PCI level, device
refcount for <bus>:00.0 device is decremented at the end of the
pci_get_device, made by i7core_get_all_devices(). The fact is that
the first versions of the driver relied on those devices to probe
for Nehalem, but the current versions don't use it at all.

So, let's just remove those devices from the driver, making it simpler
and fixing the bug.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:41 -02:00
Mauro Carvalho Chehab 88ef5ea976 i7core_edac: it is safe to i7core_unregister_mci() when mci=NULL
i7core_unregister_mci() checks internally when mci=NULL. There's no
need to test it outside.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:41 -02:00
Mauro Carvalho Chehab 6d37d240f2 i7core_edac: Fix an oops at i7core probe
changeset c91d57ba9ce5b5c93a7077e2f72510eb1f9131c4 moved the init
of the priv pointer to the end of the probe routine. However, we need
them before that, otherwise, we hit an OOPS:

[   67.743453] EDAC DEBUG: mci_bind_devs: Associated fn 0.0, dev = ffff88011b46e000, socket 0
[   67.751861] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
[   67.759685] IP: [<ffffffffa017e484>] i7core_probe+0x979/0x130c [i7core_edac]
[   67.766721] PGD 10bd38067 PUD 10bd37067 PMD 0
[   67.771178] Oops: 0000 [#1] SMP
[   67.774414] last sysfs file: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map
[   67.782213] CPU 1
[   67.784042] Modules linked in: i7core_edac(+) edac_core cpufreq_ondemand binfmt_misc dm_multipath video output pci_slot snd_hda_codd

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:41 -02:00
Hidetoshi Seto 21b6806a8c i7core_edac: Remove unused member channels in i7core_pvt
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:41 -02:00
Hidetoshi Seto 2e5185f7ff i7core_edac: Remove unused arg csrow from get_dimm_config
A local is enough.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:41 -02:00
Hidetoshi Seto aace42831a i7core_edac: Reduce args of i7core_register_mci
We can check the number of channels in i7core_register_mci.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:40 -02:00
Hidetoshi Seto 1c6edbbe25 i7core_edac: Introduce i7core_unregister_mci
In i7core_probe, when setup of mci for 2nd or later socket failed,
we should cleanup prepared mci for 1st socket or so before "put" of
all devices.

So let have i7core_unregister_mci that can be shared between here
and i7core_remove.

While here fix a typo "hanler".

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:40 -02:00
Hidetoshi Seto 73589c80cd i7core_edac: Use saved pointers
We already have saved pointers.  Use shorter ones.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:40 -02:00
Hidetoshi Seto 71fe01706d i7core_edac: Check probe counter in i7core_remove
Prevent i7core_remove from running multiple times.
Otherwise value proved will be negative and something will be wrong.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:40 -02:00
Hidetoshi Seto 2896637b86 i7core_edac: Call pci_dev_put() when alloc_i7core_dev() failed
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:40 -02:00
Hidetoshi Seto 628c5ddfb0 i7core_edac: Fix error path of i7core_register_mci
Release resources properly.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:40 -02:00
Hidetoshi Seto 5939813b9c i7core_edac: Fix order of lines in i7core_register_mci
The flag is_registered is not initialized until mci_bind_devs()
is called.  Refer it properly.

The mci->dev and mci->edac_check is required in edac_mc_add_mc(),
so prepare them just before the call.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:39 -02:00
Hidetoshi Seto 64c10f6e0e i7core_edac: Always do get/put for all devices
We already do 'get' for all sockets at once. So do 'put' in the
same way.

And let args of the 'get' function to void since it handles
only the single, static and known size table pci_dev_table[].

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:39 -02:00
Hidetoshi Seto a3aa0a4ab5 i7core_edac: Introduce i7core_pci_ctl_create/release
Have a couple of method.
while here sort out lines in the i7core_register_mci() a bit.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:39 -02:00
Hidetoshi Seto 2aa9be448d i7core_edac: Introduce free_i7core_dev
Have a method to make a couple with alloc_i7core_dev() previously
introduced.  Using in pair will help proper resource handling.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:39 -02:00
Hidetoshi Seto 848b2f7ed6 i7core_edac: Introduce alloc_i7core_dev
It's nice to have a method for a single purpose.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:38 -02:00
Hidetoshi Seto b197cba071 i7core_edac: Reduce args of i7core_get_onedevice
Since we need to pass the index of the entry, pass the table itself
instead of passing individual members of the table.

While here make it static.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:38 -02:00
Hidetoshi Seto 45b7c981ae i7core_edac: Fix the logic in i7core_remove()
commit 47251b4d960bdfa648b0d06dbc6d445f41cb3906 have changed
the logic for unexplained reasons.  It looks strange that it
can release i7core_dev without calling i7core_put_devices()
that releases i7core_dev->pdev.

Fix the part.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:38 -02:00
Mauro Carvalho Chehab 54a08ab153 i7core_edac: Don't do the legacy PCI probe by default
The legacy PCI probe sometimes cause hangs. Better to have it
disabled by default, and have a parameter to enable it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:38 -02:00
Mauro Carvalho Chehab accf74fff3 i7core_edac: don't use a freed mci struct
This is a nasty bug. Since kobject count will be reduced by zero by
edac_mc_del_mc(), and this triggers the kobj release method, the
mci memory will be freed automatically. So, all we have left is ctl_name,
as shown by enabling debug:

[   80.822186] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 1020: edac_remove_sysfs_mci_device()  remove_link
[   80.832590] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 1024: edac_remove_sysfs_mci_device()  remove_mci_instance
[   80.843776] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 640: edac_mci_control_release() mci instance idx=0 releasing
[   80.855163] EDAC MC: Removed device 0 for i7core_edac.c i7 core #0: DEV 0000:3f:03.0
[   80.862936] EDAC DEBUG: in drivers/edac/i7core_edac.c, line at 2089: (null): free structs
[   80.871134] EDAC DEBUG: in drivers/edac/edac_mc.c, line at 238: edac_mc_free()
[   80.878379] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 726: edac_mc_unregister_sysfs_main_kobj()
[   80.888043] EDAC DEBUG: in drivers/edac/i7core_edac.c, line at 1232: drivers/edac/i7core_edac.c: i7core_put_devices()

Also, kfree(mci) shouldn't happen at the kobj.release, as it happens
when edac_remove_sysfs_mci_device() is called, but the logic is:
	edac_remove_sysfs_mci_device(mci);
	edac_printk(KERN_INFO, EDAC_MC,
		"Removed device %d for %s %s: DEV %s\n", mci->mc_idx,
		mci->mod_name, mci->ctl_name, edac_dev_name(mci));
So, as the edac_printk() needs the mci struct, this generates an OOPS.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:38 -02:00
Mauro Carvalho Chehab bbc560ae67 edac_core: Print debug messages at release calls
This is important to track a nasty bug at the free logic.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:38 -02:00
Mauro Carvalho Chehab ac99768c53 edac_core: Don't let free(mci) happen while using it
A very nasty bug were happening on edac core, due to the way mci objects are
freed. mci memory is freed when kobject count reaches zero, by
edac_mci_control_release(). However, from the logs, this is clearly happening
before the final usage of mci struct:

[15799.607454] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 640: edac_mci_control_release() mci instance idx=0 releasing
[15799.618773] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 769: edac_inst_grp_release()
[15799.627326] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 894: edac_remove_mci_instance_attributes() end of seeking for group all_channel_counts
[15799.640887] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 877: edac_remove_mci_instance_attributes() sysfs_attrib = ffffffffa01d7240
[15799.653412] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 1020: edac_remove_sysfs_mci_device()  remove_link
[15799.663753] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 1024: edac_remove_sysfs_mci_device()  remove_mci_instance

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:37 -02:00
Mauro Carvalho Chehab 6fe1108f14 edac_core: Do a better job with node removal
Make sure we remove groups at the right order

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:37 -02:00
Mauro Carvalho Chehab 39300e7143 i7core_edac: explicitly remove PCI devices from the devices list
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:37 -02:00
Mauro Carvalho Chehab 41ba6c1058 i7core_edac: MCE NMI handling should stop first
Otherwise, a NMI may happen causing a race condition and a panic.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:37 -02:00
Mauro Carvalho Chehab 6ee7dd5044 i7core_edac: Initialize all priv vars before start polling
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:37 -02:00
Mauro Carvalho Chehab 3cfd01468b i7core_edac: Improve debug to seek for register/remove errors
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:37 -02:00
Mauro Carvalho Chehab e9144601d3 i7core_edac: move #if PAGE_SHIFT to edac_core.h
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:36 -02:00
Mauro Carvalho Chehab 1288c18f48 i7core_edac: Properly mark const static vars as such
There are two groups of sysfs attributes: one for rdimm and another
for udimm. Instead of changing dynamically the unique static struct
for handling udimm's, declare two vars and make them constant.

This avoids the risk of having two or more memory controllers, each
needing a different set of attributes.

While here, use const on all places where it is applicable.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

edac_core: use const for constant sysfs arguments

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:14 -02:00
Mauro Carvalho Chehab 18c29002f9 i7core_edac: move static vars to the beginning of the file
While here, don't initialize probed with 0.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:12 -02:00
Mauro Carvalho Chehab 939747bd68 i7core_edac: Be sure that the edac pci handler will be properly released
With multi-sockets, more than one edac pci handler is enabled. Be sure to
un-register all instances.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-24 11:20:12 -02:00
Linus Torvalds c029e405bd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (21 commits)
  EDAC, MCE: Fix shift warning on 32-bit
  EDAC, MCE: Add a BIT_64() macro
  EDAC, MCE: Enable MCE decoding on F12h
  EDAC, MCE: Add F12h NB MCE decoder
  EDAC, MCE: Add F12h IC MCE decoder
  EDAC, MCE: Add F12h DC MCE decoder
  EDAC, MCE: Add support for F11h MCEs
  EDAC, MCE: Enable MCE decoding on F14h
  EDAC, MCE: Fix FR MCEs decoding
  EDAC, MCE: Complete NB MCE decoders
  EDAC, MCE: Warn about LS MCEs on F14h
  EDAC, MCE: Adjust IC decoders to F14h
  EDAC, MCE: Adjust DC decoders to F14h
  EDAC, MCE: Rename files
  EDAC, MCE: Rework MCE injection
  EDAC: Export edac sysfs class to users.
  EDAC, MCE: Pass complete MCE info to decoders
  EDAC, MCE: Sanitize error codes
  EDAC, MCE: Remove unused function parameter
  EDAC, MCE: Add HW_ERR prefix
  ...
2010-10-21 14:04:58 -07:00