Martin reported that the Supermicro X8DTH-i/6/iF/6F advertises incorrect
host bridge windows via _CRS:
pci_root PNP0A08:00: host bridge window [io 0xf000-0xffff]
pci_root PNP0A08:01: host bridge window [io 0xf000-0xffff]
Both bridges advertise the 0xf000-0xffff window, which cannot be correct.
Work around this by ignoring _CRS on this system. The downside is that we
may not assign resources correctly to hot-added PCI devices (if they are
possible on this system).
Link: https://bugzilla.kernel.org/show_bug.cgi?id=42606
Reported-by: Martin Burnicki <martin.burnicki@meinberg.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org
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Merge tag 'for-linus-4.10-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross:
"Xen features and fixes for 4.10
These are some fixes, a move of some arm related headers to share them
between arm and arm64 and a series introducing a helper to make code
more readable.
The most notable change is David stepping down as maintainer of the
Xen hypervisor interface. This results in me sending you the pull
requests for Xen related code from now on"
* tag 'for-linus-4.10-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (29 commits)
xen/balloon: Only mark a page as managed when it is released
xenbus: fix deadlock on writes to /proc/xen/xenbus
xen/scsifront: don't request a slot on the ring until request is ready
xen/x86: Increase xen_e820_map to E820_X_MAX possible entries
x86: Make E820_X_MAX unconditionally larger than E820MAX
xen/pci: Bubble up error and fix description.
xen: xenbus: set error code on failure
xen: set error code on failures
arm/xen: Use alloc_percpu rather than __alloc_percpu
arm/arm64: xen: Move shared architecture headers to include/xen/arm
xen/events: use xen_vcpu_id mapping for EVTCHNOP_status
xen/gntdev: Use VM_MIXEDMAP instead of VM_IO to avoid NUMA balancing
xen-scsifront: Add a missing call to kfree
MAINTAINERS: update XEN HYPERVISOR INTERFACE
xenfs: Use proc_create_mount_point() to create /proc/xen
xen-platform: use builtin_pci_driver
xen-netback: fix error handling output
xen: make use of xenbus_read_unsigned() in xenbus
xen: make use of xenbus_read_unsigned() in xen-pciback
xen: make use of xenbus_read_unsigned() in xen-fbfront
...
The function is never called under PV guests, and only shows up
when MSI (or MSI-X) cannot be allocated. Convert the message
to include the error value.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.
The smp_call_function_single() is dropped because the ONLINE callback is
invoked on the target CPU since commit 1cf4f629d9 ("cpu/hotplug: Move
online calls to hotplugged cpu"). smp_call_function_single() invokes the
invoked function with interrupts disabled, but this calling convention is
not preserved as the MSR is not modified by anything else than this code.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org
Cc: rt@linuxtronix.de
Link: http://lkml.kernel.org/r/20161117183541.8588-21-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
- Switch to new CPU hotplug mechanism.
- Support driver_override in pciback.
- Require vector callback for HVM guests (the alternate mechanism via
the platform device has been broken for ages).
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Merge tag 'for-linus-4.9-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from David Vrabel:
"xen features and fixes for 4.9:
- switch to new CPU hotplug mechanism
- support driver_override in pciback
- require vector callback for HVM guests (the alternate mechanism via
the platform device has been broken for ages)"
* tag 'for-linus-4.9-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/x86: Update topology map for PV VCPUs
xen/x86: Initialize per_cpu(xen_vcpu, 0) a little earlier
xen/pciback: support driver_override
xen/pciback: avoid multiple entries in slot list
xen/pciback: simplify pcistub device handling
xen: Remove event channel notification through Xen PCI platform device
xen/events: Convert to hotplug state machine
xen/x86: Convert to hotplug state machine
x86/xen: add missing \n at end of printk warning message
xen/grant-table: Use kmalloc_array() in arch_gnttab_valloc()
xen: Make VPMU init message look less scary
xen: rename xen_pmu_init() in sys-hypervisor.c
hotplug: Prevent alloc/free of irq descriptors during cpu up/down (again)
xen/x86: Move irq allocation from Xen smp_op.cpu_up()
* pci/host-vmd:
x86/PCI: VMD: Move VMD driver to drivers/pci/host
x86/PCI: VMD: Synchronize with RCU freeing MSI IRQ descs
x86/PCI: VMD: Eliminate index member from IRQ list
x86/PCI: VMD: Eliminate vmd_vector member from list type
x86/PCI: VMD: Convert to use pci_alloc_irq_vectors() API
x86/PCI: VMD: Allocate IRQ lists with correct MSI-X count
PCI: Use positive flags in pci_alloc_irq_vectors()
PCI: Update "pci=resource_alignment" documentation
Conflicts:
drivers/pci/host/Kconfig
drivers/pci/host/Makefile
Move the driver source and Kconfig to the PCI host bridge drivers directory
and move the config option to a more appropriate sub-menu instead of
occupying the top-level location.
Update the Kconfig option with the X86_64 dependency that was implicitly
included from the previous location, and add information about the module
name when built as a loadable module.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Jon Derrick <jonathan.derrick@intel.com>
Ever since commit 254d1a3f02 ("xen/pv-on-hvm kexec: shutdown watches
from old kernel") using the INTx interrupt from Xen PCI platform
device for event channel notification would just lockup the guest
during bootup. postcore_initcall now calls xs_reset_watches which
will eventually try to read a value from XenStore and will get stuck
on read_reply at XenBus forever since the platform driver is not
probed yet and its INTx interrupt handler is not registered yet. That
means that the guest can not be notified at this moment of any pending
event channels and none of the per-event handlers will ever be invoked
(including the XenStore one) and the reply will never be picked up by
the kernel.
The exact stack where things get stuck during xenbus_init:
-xenbus_init
-xs_init
-xs_reset_watches
-xenbus_scanf
-xenbus_read
-xs_single
-xs_single
-xs_talkv
Vector callbacks have always been the favourite event notification
mechanism since their introduction in commit 38e20b07ef ("x86/xen:
event channels delivery on HVM.") and the vector callback feature has
always been advertised for quite some time by Xen that's why INTx was
broken for several years now without impacting anyone.
Luckily this also means that event channel notification through INTx
is basically dead-code which can be safely removed without impacting
anybody since it has been effectively disabled for more than 4 years
with nobody complaining about it (at least as far as I'm aware of).
This commit removes event channel notification through Xen PCI
platform device.
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Julien Grall <julien.grall@citrix.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Ross Lagerwall <ross.lagerwall@citrix.com>
Cc: xen-devel@lists.xenproject.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: Anthony Liguori <aliguori@amazon.com>
Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Add set_dev_domain_options() to set PCI domain-specific options as devices
are added. The first usage is to request exclusive userspace control of
PCIe hotplug indicators in VMD domains.
Devices in a VMD domain use PCIe hotplug Attention and Power Indicators in
a non-standard way; tell pciehp to ignore the indicators so userspace can
control them via the sysfs "attention" file.
To determine whether a bus is within a VMD domain, add a bool to the
pci_sysdata structure that the VMD driver sets during initialization.
[bhelgaas: changelog]
Requested-by: Kapil Karkra <kapil.karkra@intel.com>
Tested-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Fix a potential race when disabling MSI/MSI-X on a VMD domain device. If
the VMD interrupt service is running, it may see a disabled IRQ. We can
synchronize RCU just before freeing the MSI descriptor. This is safe since
the irq_desc lock isn't held, and the descriptor is valid even though it is
disabled. After vmd_msi_free(), though, the handler is reinitialized to
handle_bad_irq(), so we can't let the VMD ISR's list iteration see the
disabled IRQ after this.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by Jon Derrick: <jonathan.derrick@intel.com>
Use math to discover the IRQ list index number relative to the IRQ list
head.
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Keith Busch <keith.busch@intel.com>
Eliminate unused vmd and vector members from vmd_irq_list and discover the
vector using pci_irq_vector().
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Keith Busch <keith.busch@intel.com>
Convert to use the pci_alloc_irq_vectors() API.
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
To reduce the amount of memory required for IRQ lists, only allocate their
space after calling pci_msix_enable_range() which may reduce the number of
MSI-X vectors allocated.
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
The Haswell Power Control Unit has a non-PCI register (CONFIG_TDP_NOMINAL)
where BAR 0 is supposed to be. This is erratum HSE43 in the spec update
referenced below:
The PCIe* Base Specification indicates that Configuration Space Headers
have a base address register at offset 0x10. Due to this erratum, the
Power Control Unit's CONFIG_TDP_NOMINAL CSR (Bus 1; Device 30; Function
3; Offset 0x10) is located where a base register is expected.
Mark the PCU as having non-compliant BARs so we don't try to probe any of
them. There are no other BARs on this device.
Rename the quirk so it's not Broadwell-specific.
Link: http://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-v3-spec-update.html
Link: http://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-v3-datasheet-vol-2.html (section 5.4, Device 30 Function 3)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=153881
Reported-by: Paul Menzel <pmenzel@molgen.mpg.de>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Myron Stowe <myron.stowe@redhat.com>
We can't initialize the list head on deletion as this causes the node to
point to itself, which causes an infinite loop if vmd_irq() happens to be
servicing that node.
The list initialization was trying to fix a bug from multiple calls to
disable the same IRQ. Fix this instead by having the VMD driver track if
the interrupt is enabled.
[bhelgaas: changelog, add "Fixes"]
Fixes: 97e9230635 ("x86/PCI: VMD: Initialize list item in IRQ disable")
Reported-by: Grzegorz Koczot <grzegorz.koczot@intel.com>
Tested-by: Miroslaw Drost <miroslaw.drost@intel.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by Jon Derrick: <jonathan.derrick@intel.com>
Guided by grsecurity's analogous __read_only markings in arch/x86,
this applies several uses of __ro_after_init to structures that are
only updated during __init, and const for some structures that are
never updated. Additionally extends __init markings to some functions
that are only used during __init, and cleans up some missing C99 style
static initializers.
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brad Spengler <spender@grsecurity.net>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: David Brown <david.brown@linaro.org>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Emese Revfy <re.emese@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mathias Krause <minipli@googlemail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: PaX Team <pageexec@freemail.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kernel-hardening@lists.openwall.com
Link: http://lkml.kernel.org/r/20160808232906.GA29731@www.outflux.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The dma-mapping core and the implementations do not change the DMA
attributes passed by pointer. Thus the pointer can point to const data.
However the attributes do not have to be a bitfield. Instead unsigned
long will do fine:
1. This is just simpler. Both in terms of reading the code and setting
attributes. Instead of initializing local attributes on the stack
and passing pointer to it to dma_set_attr(), just set the bits.
2. It brings safeness and checking for const correctness because the
attributes are passed by value.
Semantic patches for this change (at least most of them):
virtual patch
virtual context
@r@
identifier f, attrs;
@@
f(...,
- struct dma_attrs *attrs
+ unsigned long attrs
, ...)
{
...
}
@@
identifier r.f;
@@
f(...,
- NULL
+ 0
)
and
// Options: --all-includes
virtual patch
virtual context
@r@
identifier f, attrs;
type t;
@@
t f(..., struct dma_attrs *attrs);
@@
identifier r.f;
@@
f(...,
- NULL
+ 0
)
Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.com
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Acked-by: Mark Salter <msalter@redhat.com> [c6x]
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> [cris]
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> [drm]
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Joerg Roedel <jroedel@suse.de> [iommu]
Acked-by: Fabien Dessenne <fabien.dessenne@st.com> [bdisp]
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> [vb2-core]
Acked-by: David Vrabel <david.vrabel@citrix.com> [xen]
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [xen swiotlb]
Acked-by: Joerg Roedel <jroedel@suse.de> [iommu]
Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon]
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> [s390]
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> [avr32]
Acked-by: Vineet Gupta <vgupta@synopsys.com> [arc]
Acked-by: Robin Murphy <robin.murphy@arm.com> [arm64 and dma-iommu]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull x86 header cleanups from Ingo Molnar:
"This tree is a cleanup of the x86 tree reducing spurious uses of
module.h - which should improve build performance a bit"
* 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, crypto: Restore MODULE_LICENSE() to glue_helper.c so it loads
x86/apic: Remove duplicated include from probe_64.c
x86/ce4100: Remove duplicated include from ce4100.c
x86/headers: Include spinlock_types.h in x8664_ksyms_64.c for missing spinlock_t
x86/platform: Delete extraneous MODULE_* tags fromm ts5500
x86: Audit and remove any remaining unnecessary uses of module.h
x86/kvm: Audit and remove any unnecessary uses of module.h
x86/xen: Audit and remove any unnecessary uses of module.h
x86/platform: Audit and remove any unnecessary uses of module.h
x86/lib: Audit and remove any unnecessary uses of module.h
x86/kernel: Audit and remove any unnecessary uses of module.h
x86/mm: Audit and remove any unnecessary uses of module.h
x86: Don't use module.h just for AUTHOR / LICENSE tags
* pci/host-aardvark:
arm64: dts: marvell: Add Aardvark PCIe support for Armada 3700
PCI: aardvark: Add Aardvark PCI host controller driver
dt-bindings: add DT binding for the Aardvark PCIe controller
* pci/host-altera:
PCI: altera: Poll for link up status after retraining the link
PCI: altera: Check link status before retrain link
PCI: altera: Reorder read/write functions
* pci/host-dra7xx:
PCI: dra7xx: Fix return value in case of error
* pci/host-hv:
PCI: hv: Fix interrupt cleanup path
PCI: hv: Handle all pending messages in hv_pci_onchannelcallback()
PCI: hv: Don't leak buffer in hv_pci_onchannelcallback()
* pci/host-vmd:
x86/PCI: VMD: Separate MSI and MSI-X vector sharing
x86/PCI: VMD: Use x86_vector_domain as parent domain
x86/PCI: VMD: Use lock save/restore in interrupt enable path
x86/PCI: VMD: Initialize list item in IRQ disable
x86/PCI: VMD: Select device dma ops to override
* pci/host-xilinx:
PCI: xilinx: Fix return value in case of error
Manually apply changes from pci/demodularize-hosts and
pci/host-request-windows to drivers/pci/host/pci-aardvark.c
Pull irq updates from Thomas Gleixner:
"The irq department delivers:
- new core infrastructure to allow better management of multi-queue
devices (interrupt spreading, node aware descriptor allocation ...)
- a new interrupt flow handler to support the new fangled Intel VMD
devices.
- yet another new interrupt controller driver.
- a series of fixes which addresses sparse warnings, missing
includes, missing static declarations etc from Ben Dooks.
- a fix for the error handling in the hierarchical domain allocation
code.
- the usual pile of small updates to core and driver code"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits)
genirq: Fix missing irq allocation affinity hint
irqdomain: Fix irq_domain_alloc_irqs_recursive() error handling
irq/Documentation: Correct result of echnoing 5 to smp_affinity
MAINTAINERS: Remove Jiang Liu from irq domains
genirq/msi: Fix broken debug output
genirq: Add a helper to spread an affinity mask for MSI/MSI-X vectors
genirq/msi: Make use of affinity aware allocations
genirq: Use affinity hint in irqdesc allocation
genirq: Add affinity hint to irq allocation
genirq: Introduce IRQD_AFFINITY_MANAGED flag
genirq/msi: Remove unused MSI_FLAG_IDENTITY_MAP
irqchip/s3c24xx: Fixup IO accessors for big endian
irqchip/exynos-combiner: Fix usage of __raw IO
irqdomain: Fix disposal of mappings for interrupt hierarchies
irqchip/aspeed-vic: Add irq controller for Aspeed
doc/devicetree: Add Aspeed VIC bindings
x86/PCI/VMD: Use untracked irq handler
genirq: Add untracked irq handler
irqchip/mips-gic: Populate irq_domain names
irqchip/gicv3-its: Implement two-level(indirect) device table support
...
Pull x86 platform updates from Ingo Molnar:
"The main changes in this cycle were:
- Intel-SoC enhancements (Andy Shevchenko)
- Intel CPU symbolic model definition rework (Dave Hansen)
- ... other misc changes"
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
x86/sfi: Enable enumeration of SD devices
x86/pci: Use MRFLD abbreviation for Merrifield
x86/platform/intel-mid: Make vertical indentation consistent
x86/platform/intel-mid: Mark regulators explicitly defined
x86/platform/intel-mid: Rename mrfl.c to mrfld.c
x86/platform/intel-mid: Enable spidev on Intel Edison boards
x86/platform/intel-mid: Extend PWRMU to support Penwell
x86/pci, x86/platform/intel_mid_pci: Remove duplicate power off code
x86/platform/intel-mid: Add pinctrl for Intel Merrifield
x86/platform/intel-mid: Enable GPIO expanders on Edison
x86/platform/intel-mid: Add Power Management Unit driver
x86/platform/atom/punit: Enable support for Merrifield
x86/platform/intel_mid_pci: Rework IRQ0 workaround
x86, thermal: Clean up and fix CPU model detection for intel_soc_dts_thermal
x86, mmc: Use Intel family name macros for mmc driver
x86/intel_telemetry: Use Intel family name macros for telemetry driver
x86/acpi/lss: Use Intel family name macros for the acpi_lpss driver
x86/cpufreq: Use Intel family name macros for the intel_pstate cpufreq driver
x86/platform: Use new Intel model number macros
x86/intel_idle: Use Intel family macros for intel_idle
...
Historically a lot of these existed because we did not have
a distinction between what was modular code and what was providing
support to modules via EXPORT_SYMBOL and friends. That changed
when we forked out support for the latter into the export.h file.
This means we should be able to reduce the usage of module.h
in code that is obj-y Makefile or bool Kconfig. In the case of
some of these which are modular, we can extend that to also include
files that are building basic support functionality but not related
to loading or registering the final module; such files also have
no need whatsoever for module.h
The advantage in removing such instances is that module.h itself
sources about 15 other headers; adding significantly to what we feed
cpp, and it can obscure what headers we are effectively using.
Since module.h was the source for init.h (for __init) and for
export.h (for EXPORT_SYMBOL) we consider each instance for the
presence of either and replace as needed.
In the case of crypto/glue_helper.c we delete a redundant instance
of MODULE_LICENSE in order to delete module.h -- the license info
is already present at the top of the file.
The uncore change warrants a mention too; it is uncore.c that uses
module.h and not uncore.h; hence the relocation done there.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20160714001901.31603-9-paul.gortmaker@windriver.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Everywhere in the kernel the MRFLD is used as abbreviation of Intel Merrifield.
Do the same in intel_mid_pci.c module.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1468321462-136016-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Intel MID platforms (Moorestown, Medfield, Clovertrail, Merrifield) are
sharing the code in the intel_mid_pci.c module. There is no need to
power off specific Moorestown devices after the following commit:
5823d0893e ("x86/platform/intel-mid: Add Power Management Unit driver")
... because the condition in mrfld_power_off_dev() is true for any platform
from the above list.
Remove duplicate power off certain devices on Intel Moorestown and rename
the affected functions to show that they are applied to any of Intel MID
platforms.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1467749348-100518-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Trying to make the ISA and PCI init functionality common turned out
to be a bad idea, because the ISA path depends on external
functionality.
Restore the previous behavior and limit the refactoring to PCI
interrupts only.
Fixes: 1fcb6a813c "ACPI,PCI,IRQ: remove redundant code in acpi_irq_penalty_init()"
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Tested-by: Wim Osterholt <wim@djo.tudelft.nl>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Child devices in a VMD domain that want to use MSI are slowing down MSI-X
using devices sharing the same vectors. Move all MSI usage to a single VMD
vector, and MSI-X devices can share the rest.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jon Derrick <jonathan.derrick@intel.com>
Otherwise APIC code assumes VMD's IRQ domain can be managed by the APIC,
resulting in an invalid cast of irq_data during irq_force_complete_move().
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Enabling interrupts may result in an interrupt raised and serviced while
VMD holds a lock, resulting in contention with the spin lock held while
enabling interrupts.
The solution is to disable preemption and save/restore the state during
interrupt enable and disable.
Fixes lockdep:
======================================================
[ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ]
4.6.0-2016-06-16-lockdep+ #47 Tainted: G E
------------------------------------------------------
kworker/0:1/447 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
(list_lock){+.+...}, at: [<ffffffffa04eb8fc>] vmd_irq_enable+0x3c/0x70 [vmd]
and this task is already holding:
(&irq_desc_lock_class){-.-...}, at: [<ffffffff810e1ff6>] __setup_irq+0xa6/0x610
which would create a new lock dependency:
(&irq_desc_lock_class){-.-...} -> (list_lock){+.+...}
but this new dependency connects a HARDIRQ-irq-safe lock:
(&irq_desc_lock_class){-.-...}
... which became HARDIRQ-irq-safe at:
[<ffffffff810c9f21>] __lock_acquire+0x981/0xe00
[<ffffffff810cb039>] lock_acquire+0x119/0x220
[<ffffffff8167294d>] _raw_spin_lock+0x3d/0x80
[<ffffffff810e36d4>] handle_level_irq+0x24/0x110
[<ffffffff8101f20a>] handle_irq+0x1a/0x30
[<ffffffff81675fc1>] do_IRQ+0x61/0x120
[<ffffffff8167404c>] ret_from_intr+0x0/0x20
[<ffffffff81672e30>] _raw_spin_unlock_irqrestore+0x40/0x60
[<ffffffff810e21ee>] __setup_irq+0x29e/0x610
[<ffffffff810e25a1>] setup_irq+0x41/0x90
[<ffffffff81f5777f>] setup_default_timer_irq+0x1e/0x20
[<ffffffff81f57798>] hpet_time_init+0x17/0x19
[<ffffffff81f5775a>] x86_late_time_init+0xa/0x11
[<ffffffff81f51e9b>] start_kernel+0x382/0x436
[<ffffffff81f51308>] x86_64_start_reservations+0x2a/0x2c
[<ffffffff81f51445>] x86_64_start_kernel+0x13b/0x14a
to a HARDIRQ-irq-unsafe lock:
(list_lock){+.+...}
... which became HARDIRQ-irq-unsafe at:
... [<ffffffff810c9d8e>] __lock_acquire+0x7ee/0xe00
[<ffffffff810cb039>] lock_acquire+0x119/0x220
[<ffffffff8167294d>] _raw_spin_lock+0x3d/0x80
[<ffffffffa04eba42>] vmd_msi_init+0x72/0x150 [vmd]
[<ffffffff810e8597>] msi_domain_alloc+0xb7/0x140
[<ffffffff810e6b10>] irq_domain_alloc_irqs_recursive+0x40/0xa0
[<ffffffff810e6cea>] __irq_domain_alloc_irqs+0x14a/0x330
[<ffffffff810e8a8c>] msi_domain_alloc_irqs+0x8c/0x1d0
[<ffffffff813ca4e3>] pci_msi_setup_msi_irqs+0x43/0x70
[<ffffffff813cada1>] pci_enable_msi_range+0x131/0x280
[<ffffffff813bf5e0>] pcie_port_device_register+0x320/0x4e0
[<ffffffff813bf9a4>] pcie_portdrv_probe+0x34/0x60
[<ffffffff813b0e85>] local_pci_probe+0x45/0xa0
[<ffffffff813b226b>] pci_device_probe+0xdb/0x130
[<ffffffff8149e3cc>] driver_probe_device+0x22c/0x440
[<ffffffff8149e774>] __device_attach_driver+0x94/0x110
[<ffffffff8149bfad>] bus_for_each_drv+0x5d/0x90
[<ffffffff8149e030>] __device_attach+0xc0/0x140
[<ffffffff8149e0c0>] device_attach+0x10/0x20
[<ffffffff813a77f7>] pci_bus_add_device+0x47/0x90
[<ffffffff813a7879>] pci_bus_add_devices+0x39/0x70
[<ffffffff813aaba7>] pci_rescan_bus+0x27/0x30
[<ffffffffa04ec1af>] vmd_probe+0x68f/0x76c [vmd]
[<ffffffff813b0e85>] local_pci_probe+0x45/0xa0
[<ffffffff81088064>] work_for_cpu_fn+0x14/0x20
[<ffffffff8108c244>] process_one_work+0x1f4/0x740
[<ffffffff8108c9c6>] worker_thread+0x236/0x4f0
[<ffffffff810935c2>] kthread+0xf2/0x110
[<ffffffff816738f2>] ret_from_fork+0x22/0x50
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(list_lock);
local_irq_disable();
lock(&irq_desc_lock_class);
lock(list_lock);
<Interrupt>
lock(&irq_desc_lock_class);
*** DEADLOCK ***
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Keith Busch <keith.busch@intel.com>
There is no way to know which device in a VMD triggered an interrupt
without invoking every registered driver's actions. This uses the
untracked irq handler so that a less used device does not trigger
spurious interrupt.
We have been previously recommending users to enable "noirqdebug", but do
not want to force a system setting just to keep this domain functional.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org
Cc: Jon Derrick <jonathan.derrick@intel.com>
Link: http://lkml.kernel.org/r/1466200821-29159-2-git-send-email-keith.busch@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Add Power Management Unit driver to handle power states of South Complex
devices on Intel Tangier. In the future it might be expanded to cover North
Complex devices as well.
With this driver the power state of the host controllers such as SPI, I2C,
UART, eMMC, and DMA would be managed.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: David Cohen <david.a.cohen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-pci@vger.kernel.org
Link: http://lkml.kernel.org/r/1465928985-12113-1-git-send-email-andriy.shevchenko@linux.intel.com
[ Minor readability edits. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
On Intel Merrifield platform several PCI devices have a bogus configuration,
i.e. the IRQ0 had been assigned to few of them. These are PCI root bridge,
eMMC0, HS UART common registers, PWM, and HDMI. The actual interrupt line can
be allocated to one device exclusively, in our case to eMMC0, the rest should
cope without it and basically known drivers for them are not using interrupt
line at all.
Rework IRQ0 workaround, which was previously done to avoid conflict between
eMMC0 and HS UART common registers, to behave differently based on the device
in question, i.e. allocate interrupt line to eMMC0, but silently skip interrupt
allocation for the rest except HS UART common registers which are not used
anyway. With this rework IOSF MBI driver in particular would be used.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: 39d9b77b8d ("x86/pci/intel_mid_pci: Work around for IRQ0 assignment")
Link: http://lkml.kernel.org/r/1465842481-136852-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Multiple calls to disable an IRQ would have caused the driver to
dereference a poisoned list item. This re-initializes the list to allow
multiple requests to disable the IRQ.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by Jon Derrick: <jonathan.derrick@intel.com>
VMD device doesn't usually have device archdata specific dma_ops, so we
need to override the default ops for VMD devices.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by Jon Derrick: <jonathan.derrick@intel.com>
b4ff8389ed is incomplete: relies on nr_legacy_irqs() to get the number
of legacy interrupts when actually nr_legacy_irqs() returns 0 after
probe_8259A(). Use NR_IRQS_LEGACY instead.
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
CC: stable@vger.kernel.org
Enumeration
Refine PCI support check in pcibios_init() (Adrian-Ken Rueegsegger)
Provide common functions for ECAM mapping (Jayachandran C)
Allow all PCIe services on non-ACPI host bridges (Jon Derrick)
Remove return values from pcie_port_platform_notify() and relatives (Jon Derrick)
Widen portdrv service type from 4 bits to 8 bits (Keith Busch)
Add Downstream Port Containment portdrv service type (Keith Busch)
Add Downstream Port Containment driver (Keith Busch)
Resource management
Identify Enhanced Allocation (EA) BAR Equivalent resources in sysfs (Alex Williamson)
Supply CPU physical address (not bus address) to iomem_is_exclusive() (Bjorn Helgaas)
alpha: Call iomem_is_exclusive() for IORESOURCE_MEM, but not IORESOURCE_IO (Bjorn Helgaas)
Mark Broadwell-EP Home Agent 1 as having non-compliant BARs (Prarit Bhargava)
Disable all BAR sizing for devices with non-compliant BARs (Prarit Bhargava)
Move PCI I/O space management from OF to PCI core code (Tomasz Nowicki)
PCI device hotplug
acpiphp_ibm: Avoid uninitialized variable reference (Dan Carpenter)
Use cached copy of PCI_EXP_SLTCAP_HPC bit (Lukas Wunner)
Virtualization
Mark Intel i40e NIC INTx masking as broken (Alex Williamson)
Reverse standard ACS vs device-specific ACS enabling (Alex Williamson)
Work around Intel Sunrise Point PCH incorrect ACS capability (Alex Williamson)
IOMMU
Add pci_add_dma_alias() to abstract implementation (Bjorn Helgaas)
Move informational printk to pci_add_dma_alias() (Bjorn Helgaas)
Add support for multiple DMA aliases (Jacek Lawrynowicz)
Add DMA alias quirk for mic_x200_dma (Jacek Lawrynowicz)
Thunderbolt
Fix double free of drom buffer (Andreas Noever)
Add Intel Thunderbolt device IDs (Lukas Wunner)
Fix typos and magic number (Lukas Wunner)
Support 1st gen Light Ridge controller (Lukas Wunner)
Generic host bridge driver
Use generic ECAM API (Jayachandran C)
Cavium ThunderX host bridge driver
Don't clobber read-only bits in bridge config registers (David Daney)
Use generic ECAM API (Jayachandran C)
Freescale i.MX6 host bridge driver
Use enum instead of bool for variant indicator (Andrey Smirnov)
Implement reset sequence for i.MX6+ (Andrey Smirnov)
Factor out ref clock enable (Bjorn Helgaas)
Add initial imx6sx support (Christoph Fritz)
Add reset-gpio-active-high boolean property to DT (Petr Štetiar)
Add DT property for link gen, default to Gen1 (Tim Harvey)
dts: Specify imx6qp version of PCIe core (Andrey Smirnov)
dts: Fix PCIe reset GPIO polarity on Toradex Apalis Ixora (Petr Štetiar)
Marvell Armada host bridge driver
add DT binding for Marvell Armada 7K/8K PCIe controller (Thomas Petazzoni)
Add driver for Marvell Armada 7K/8K PCIe controller (Thomas Petazzoni)
Marvell MVEBU host bridge driver
Constify mvebu_pcie_pm_ops structure (Jisheng Zhang)
Use SET_NOIRQ_SYSTEM_SLEEP_PM_OPS for mvebu_pcie_pm_ops (Jisheng Zhang)
Microsoft Hyper-V host bridge driver
Report resources release after stopping the bus (Vitaly Kuznetsov)
Add explicit barriers to config space access (Vitaly Kuznetsov)
Renesas R-Car host bridge driver
Select PCI_MSI_IRQ_DOMAIN (Arnd Bergmann)
Synopsys DesignWare host bridge driver
Remove incorrect RC memory base/limit configuration (Gabriele Paoloni)
Move Root Complex setup code to dw_pcie_setup_rc() (Jisheng Zhang)
TI Keystone host bridge driver
Add error IRQ handler (Murali Karicheri)
Remove unnecessary goto statement (Murali Karicheri)
Miscellaneous
Fix spelling errors (Colin Ian King)
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Merge tag 'pci-v4.7-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Refine PCI support check in pcibios_init() (Adrian-Ken Rueegsegger)
- Provide common functions for ECAM mapping (Jayachandran C)
- Allow all PCIe services on non-ACPI host bridges (Jon Derrick)
- Remove return values from pcie_port_platform_notify() and relatives (Jon Derrick)
- Widen portdrv service type from 4 bits to 8 bits (Keith Busch)
- Add Downstream Port Containment portdrv service type (Keith Busch)
- Add Downstream Port Containment driver (Keith Busch)
Resource management:
- Identify Enhanced Allocation (EA) BAR Equivalent resources in sysfs (Alex Williamson)
- Supply CPU physical address (not bus address) to iomem_is_exclusive() (Bjorn Helgaas)
- alpha: Call iomem_is_exclusive() for IORESOURCE_MEM, but not IORESOURCE_IO (Bjorn Helgaas)
- Mark Broadwell-EP Home Agent 1 as having non-compliant BARs (Prarit Bhargava)
- Disable all BAR sizing for devices with non-compliant BARs (Prarit Bhargava)
- Move PCI I/O space management from OF to PCI core code (Tomasz Nowicki)
PCI device hotplug:
- acpiphp_ibm: Avoid uninitialized variable reference (Dan Carpenter)
- Use cached copy of PCI_EXP_SLTCAP_HPC bit (Lukas Wunner)
Virtualization:
- Mark Intel i40e NIC INTx masking as broken (Alex Williamson)
- Reverse standard ACS vs device-specific ACS enabling (Alex Williamson)
- Work around Intel Sunrise Point PCH incorrect ACS capability (Alex Williamson)
IOMMU:
- Add pci_add_dma_alias() to abstract implementation (Bjorn Helgaas)
- Move informational printk to pci_add_dma_alias() (Bjorn Helgaas)
- Add support for multiple DMA aliases (Jacek Lawrynowicz)
- Add DMA alias quirk for mic_x200_dma (Jacek Lawrynowicz)
Thunderbolt:
- Fix double free of drom buffer (Andreas Noever)
- Add Intel Thunderbolt device IDs (Lukas Wunner)
- Fix typos and magic number (Lukas Wunner)
- Support 1st gen Light Ridge controller (Lukas Wunner)
Generic host bridge driver:
- Use generic ECAM API (Jayachandran C)
Cavium ThunderX host bridge driver:
- Don't clobber read-only bits in bridge config registers (David Daney)
- Use generic ECAM API (Jayachandran C)
Freescale i.MX6 host bridge driver:
- Use enum instead of bool for variant indicator (Andrey Smirnov)
- Implement reset sequence for i.MX6+ (Andrey Smirnov)
- Factor out ref clock enable (Bjorn Helgaas)
- Add initial imx6sx support (Christoph Fritz)
- Add reset-gpio-active-high boolean property to DT (Petr Štetiar)
- Add DT property for link gen, default to Gen1 (Tim Harvey)
- dts: Specify imx6qp version of PCIe core (Andrey Smirnov)
- dts: Fix PCIe reset GPIO polarity on Toradex Apalis Ixora (Petr Štetiar)
Marvell Armada host bridge driver:
- add DT binding for Marvell Armada 7K/8K PCIe controller (Thomas Petazzoni)
- Add driver for Marvell Armada 7K/8K PCIe controller (Thomas Petazzoni)
Marvell MVEBU host bridge driver:
- Constify mvebu_pcie_pm_ops structure (Jisheng Zhang)
- Use SET_NOIRQ_SYSTEM_SLEEP_PM_OPS for mvebu_pcie_pm_ops (Jisheng Zhang)
Microsoft Hyper-V host bridge driver:
- Report resources release after stopping the bus (Vitaly Kuznetsov)
- Add explicit barriers to config space access (Vitaly Kuznetsov)
Renesas R-Car host bridge driver:
- Select PCI_MSI_IRQ_DOMAIN (Arnd Bergmann)
Synopsys DesignWare host bridge driver:
- Remove incorrect RC memory base/limit configuration (Gabriele Paoloni)
- Move Root Complex setup code to dw_pcie_setup_rc() (Jisheng Zhang)
TI Keystone host bridge driver:
- Add error IRQ handler (Murali Karicheri)
- Remove unnecessary goto statement (Murali Karicheri)
Miscellaneous:
- Fix spelling errors (Colin Ian King)"
* tag 'pci-v4.7-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (48 commits)
PCI: Disable all BAR sizing for devices with non-compliant BARs
x86/PCI: Mark Broadwell-EP Home Agent 1 as having non-compliant BARs
PCI: Identify Enhanced Allocation (EA) BAR Equivalent resources in sysfs
PCI, of: Move PCI I/O space management to PCI core code
PCI: generic, thunder: Use generic ECAM API
PCI: Provide common functions for ECAM mapping
PCI: hv: Add explicit barriers to config space access
PCI: Use cached copy of PCI_EXP_SLTCAP_HPC bit
PCI: Add Downstream Port Containment driver
PCI: Add Downstream Port Containment portdrv service type
PCI: Widen portdrv service type from 4 bits to 8 bits
PCI: designware: Remove incorrect RC memory base/limit configuration
PCI: hv: Report resources release after stopping the bus
ARM: dts: imx6qp: Specify imx6qp version of PCIe core
PCI: imx6: Implement reset sequence for i.MX6+
PCI: imx6: Use enum instead of bool for variant indicator
PCI: thunder: Don't clobber read-only bits in bridge config registers
thunderbolt: Fix double free of drom buffer
PCI: rcar: Select PCI_MSI_IRQ_DOMAIN
PCI: armada: Add driver for Marvell Armada 7K/8K PCIe controller
...
* pci/hotplug:
PCI: Use cached copy of PCI_EXP_SLTCAP_HPC bit
* pci/resource:
PCI: Disable all BAR sizing for devices with non-compliant BARs
x86/PCI: Mark Broadwell-EP Home Agent 1 as having non-compliant BARs
PCI: Identify Enhanced Allocation (EA) BAR Equivalent resources in sysfs
- In-kernel ACPICA code update to the upstream release 20160422
adding support for ACPI 6.1 along with some previously missing
bits of ACPI 6.0 support, making a fair amount of fixes and
cleanups and reducing divergences between the upstream ACPICA
and the in-kernel code (Bob Moore, Lv Zheng, Al Stone, Aleksey
Makarov, Will Miles).
- ACPI Generic Event Device (GED) support and a fix for it (Sinan Kaya,
Paul Gortmaker).
- INT3406 thermal driver for display thermal management and ACPI
backlight support code reorganization related to it (Aaron Lu,
Arnd Bergmann).
- Support for exporting the value returned by the _HRV (hardware
revision) ACPI object via sysfs (Betty Dall).
- Removal of the EXPERT dependency for ACPI on ARM64 (Mark Brown).
- Rework of the handling of ACPI _OSI mechanism allowing the
_OSI("Darwin") support to be overridden from the kernel command
line among other things (Lv Zheng, Chen Yu).
- Rework of the ACPI tables override mechanism to prepare it for
the introduction of overlays support going forward (Lv Zheng,
Rafael Wysocki).
- Fixes related to the ECDT support and module-level execution
of AML (Lv Zheng).
- ACPI PCI interrupts management update to make it work better on
ARM64 mostly (Sinan Kaya).
- ACPI SRAT handling update to make the code process all entires
in the table order regardless of the entry type (Lukasz Anaczkowski).
- EFI power off support for full-hardware ACPI platforms that don't
support ACPI S5 (Chen Yu).
- Fixes and cleanups related to the ACPI core's sysfs interface
(Dan Carpenter, Betty Dall).
- acpi_dev_present() API rework to reduce possible confusion related
to it (Lukas Wunner).
- Removal of CLK_IS_ROOT from two ACPI drivers (Stephen Boyd).
/
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Merge tag 'acpi-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"The new features here are ACPI 6.1 support (and some previously
missing bits of ACPI 6.0 support) in ACPICA and two new drivers, a
driver for the ACPI Generic Event Device (GED) feature introduced by
ACPI 6.1 and the INT3406 thermal driver for display thermal
management. Also the value returned by the _HRV (hardware revision)
ACPI object will be exported to user space via sysfs now.
In addition to that, ACPI on ARM64 will not depend on EXPERT any more.
The rest is mostly fixes and cleanups and some code reorganization.
Specifics:
- In-kernel ACPICA code update to the upstream release 20160422
adding support for ACPI 6.1 along with some previously missing bits
of ACPI 6.0 support, making a fair amount of fixes and cleanups and
reducing divergences between the upstream ACPICA and the in-kernel
code (Bob Moore, Lv Zheng, Al Stone, Aleksey Makarov, Will Miles)
- ACPI Generic Event Device (GED) support and a fix for it (Sinan
Kaya, Paul Gortmaker)
- INT3406 thermal driver for display thermal management and ACPI
backlight support code reorganization related to it (Aaron Lu, Arnd
Bergmann)
- Support for exporting the value returned by the _HRV (hardware
revision) ACPI object via sysfs (Betty Dall)
- Removal of the EXPERT dependency for ACPI on ARM64 (Mark Brown)
- Rework of the handling of ACPI _OSI mechanism allowing the
_OSI("Darwin") support to be overridden from the kernel command
line among other things (Lv Zheng, Chen Yu)
- Rework of the ACPI tables override mechanism to prepare it for the
introduction of overlays support going forward (Lv Zheng, Rafael
Wysocki)
- Fixes related to the ECDT support and module-level execution of AML
(Lv Zheng)
- ACPI PCI interrupts management update to make it work better on
ARM64 mostly (Sinan Kaya)
- ACPI SRAT handling update to make the code process all entires in
the table order regardless of the entry type (Lukasz Anaczkowski)
- EFI power off support for full-hardware ACPI platforms that don't
support ACPI S5 (Chen Yu)
- Fixes and cleanups related to the ACPI core's sysfs interface (Dan
Carpenter, Betty Dall)
- acpi_dev_present() API rework to reduce possible confusion related
to it (Lukas Wunner)
- Removal of CLK_IS_ROOT from two ACPI drivers (Stephen Boyd)"
* tag 'acpi-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (82 commits)
ACPI / video: mark acpi_video_get_levels() inline
Thermal / ACPI / video: add INT3406 thermal driver
ACPI / GED: make evged.c explicitly non-modular
ACPI / tables: Fix DSDT override mechanism
ACPI / sysfs: fix error code in get_status()
ACPICA: Update version to 20160422
ACPICA: Move all ASCII utilities to a common file
ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support for acpi_hw_write()
ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support in acpi_hw_read()
ACPICA: Executer: Introduce a set of macros to handle bit width mask generation
ACPICA: Hardware: Add optimized access bit width support
ACPICA: Utilities: Add ACPI_IS_ALIGNED() macro
ACPICA: Renamed some #defined flag constants for clarity
ACPICA: ACPI 6.0, tools/iasl: Add support for new resource descriptors
ACPICA: ACPI 6.0: Update _BIX support for new package element
ACPICA: ACPI 6.1: Support for new PCCT subtable
ACPICA: Refactor evaluate_object to reduce nesting
ACPICA: Divergence: remove unwanted spaces for typedef
ACPI,PCI,IRQ: remove SCI penalize function
ACPI,PCI,IRQ: remove redundant code in acpi_irq_penalty_init()
..
Commit b894157145 ("x86/PCI: Mark Broadwell-EP Home Agent & PCU as having
non-compliant BARs") marked Home Agent 0 & PCU has having non-compliant
BARs. Home Agent 1 also has non-compliant BARs.
Mark Home Agent 1 as having non-compliant BARs so the PCI core doesn't
touch them.
The problem with these devices is documented in the Xeon v4 specification
update:
BDF2 PCI BARs in the Home Agent Will Return Non-Zero Values
During Enumeration
Problem: During system initialization the Operating System may access
the standard PCI BARs (Base Address Registers). Due to
this erratum, accesses to the Home Agent BAR registers (Bus
1; Device 18; Function 0,4; Offsets (0x14-0x24) will return
non-zero values.
Implication: The operating system may issue a warning. Intel has not
observed any functional failures due to this erratum.
Link: http://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-v4-spec-update.html
Fixes: b894157145 ("x86/PCI: Mark Broadwell-EP Home Agent & PCU as having non-compliant BARs")
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: Ingo Molnar <mingo@redhat.com>
CC: "H. Peter Anvin" <hpa@zytor.com>
CC: Andi Kleen <ak@linux.intel.com>
acpi_irq_get_penalty is now calculating the penalty on the fly now.
No need to maintain global list of penalties or calculate them
at the init time. Removing duplicate code in acpi_irq_penalty_init.
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Also consider raw_pci_ext_ops when validating if a system has PCI support.
This leads to proper resource allocation via pcibios_resource_survey() in
the case where PCI config space is exclusively accessed through MMCONFIG.
Signed-off-by: Adrian-Ken Rueegsegger <ken@codelabs.ch>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* pci/resource:
PCI: Simplify pci_create_attr() control flow
PCI: Don't leak memory if sysfs_create_bin_file() fails
PCI: Simplify sysfs ROM cleanup
PCI: Remove unused IORESOURCE_ROM_COPY and IORESOURCE_ROM_BIOS_COPY
MIPS: Loongson 3: Keep CPU physical (not virtual) addresses in shadow ROM resource
MIPS: Loongson 3: Use temporary struct resource * to avoid repetition
ia64/PCI: Keep CPU physical (not virtual) addresses in shadow ROM resource
ia64/PCI: Use ioremap() instead of open-coded equivalent
ia64/PCI: Use temporary struct resource * to avoid repetition
PCI: Clean up pci_map_rom() whitespace
PCI: Remove arch-specific IORESOURCE_ROM_SHADOW size from sysfs
PCI: Set ROM shadow location in arch code, not in PCI core
PCI: Don't enable/disable ROM BAR if we're using a RAM shadow copy
PCI: Don't assign or reassign immutable resources
PCI: Mark shadow copy of VGA ROM as IORESOURCE_PCI_FIXED
x86/PCI: Mark Broadwell-EP Home Agent & PCU as having non-compliant BARs
PCI: Disable IO/MEM decoding for devices with non-compliant BARs
Bjorn Helgaas
Linus Torvalds
Konrad Rzeszutek Wilk
Sebastian Andrzej Siewior
Keith Busch
KarimAllah Ahmed
Jon Derrick
Ingo Molnar
Kees Cook
Krzysztof Kozlowski
Paul Gortmaker
Andy Shevchenko
Sinan Kaya
Andrea Gelmini
Stefano Stabellini
Prarit Bhargava
Borislav Petkov
Adrian-Ken Rueegsegger