12 Jan, 2012
1 commit
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* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci: (80 commits)
x86/PCI: Expand the x86_msi_ops to have a restore MSIs.
PCI: Increase resource array mask bit size in pcim_iomap_regions()
PCI: DEVICE_COUNT_RESOURCE should be equal to PCI_NUM_RESOURCES
PCI: pci_ids: add device ids for STA2X11 device (aka ConneXT)
PNP: work around Dell 1536/1546 BIOS MMCONFIG bug that breaks USB
x86/PCI: amd: factor out MMCONFIG discovery
PCI: Enable ATS at the device state restore
PCI: msi: fix imbalanced refcount of msi irq sysfs objects
PCI: kconfig: English typo in pci/pcie/Kconfig
PCI/PM/Runtime: make PCI traces quieter
PCI: remove pci_create_bus()
xtensa/PCI: convert to pci_scan_root_bus() for correct root bus resources
x86/PCI: convert to pci_create_root_bus() and pci_scan_root_bus()
x86/PCI: use pci_scan_bus() instead of pci_scan_bus_parented()
x86/PCI: read Broadcom CNB20LE host bridge info before PCI scan
sparc32, leon/PCI: convert to pci_scan_root_bus() for correct root bus resources
sparc/PCI: convert to pci_create_root_bus()
sh/PCI: convert to pci_scan_root_bus() for correct root bus resources
powerpc/PCI: convert to pci_create_root_bus()
powerpc/PCI: split PHB part out of pcibios_map_io_space()
...Fix up conflicts in drivers/pci/msi.c and include/linux/pci_regs.h due
to the same patches being applied in other branches.
07 Jan, 2012
1 commit
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The MSI restore function will become a function pointer in an
x86_msi_ops struct. It defaults to the implementation in the
io_apic.c and msi.c. We piggyback on the indirection mechanism
introduced by "x86: Introduce x86_msi_ops".Cc: x86@kernel.org
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: linux-pci@vger.kernel.org
Signed-off-by: Konrad Rzeszutek Wilk
Signed-off-by: Jesse Barnes
06 Dec, 2011
1 commit
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Add an x86_init vector for handling inconsistent core numbering.
This is useful for multi-fabric platforms, such as Numascale
NumaConnect.v2:
- use struct x86_cpuinit_ops
- provide default fall-back function to warnSigned-off-by: Daniel J Blueman
Cc: Steffen Persvold
Cc: Jesse Barnes
Link: http://lkml.kernel.org/r/1323073238-32686-2-git-send-email-daniel@numascale-asia.com
Signed-off-by: Ingo Molnar
10 Nov, 2011
2 commits
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Moorestown/Medfield platform does not have port 0x61 to report
NMI status, nor does it have external NMI sources. The only NMI
sources are from lapic, as results of perf counter overflow or
IPI, e.g. NMI watchdog or spin lock debug.Reading port 0x61 on Moorestown will return 0xff which misled
NMI handlers to false critical errors such memory parity error.
The subsequent ioport access for NMI handling can also cause
undefined behavior on Moorestown.This patch allows kernel process NMI due to watchdog or backrace
dump without unnecessary hangs.Signed-off-by: Jacob Pan
Signed-off-by: Ingo Molnar
[hand applied]
Signed-off-by: Alan Cox -
Some wall clock devices use MMIO based HW register, this new
function will give them a chance to do some initialization work
before their get/set_time service get called.Signed-off-by: Feng Tang
Signed-off-by: Jacob Pan
Signed-off-by: Alan Cox
Signed-off-by: Dirk Brandewie
Signed-off-by: Ingo Molnar
20 May, 2011
1 commit
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…el/git/tip/linux-2.6-tip
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Introduce pci_map_biosrom()
x86, olpc: Use device tree for platform identification
13 May, 2011
1 commit
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Introduce a new x86_init hook called pagetable_reserve that at the end
of init_memory_mapping is used to reserve a range of memory addresses for
the kernel pagetable pages we used and free the other ones.On native it just calls memblock_x86_reserve_range while on xen it also
takes care of setting the spare memory previously allocated
for kernel pagetable pages from RO to RW, so that it can be used for
other purposes.A detailed explanation of the reason why this hook is needed follows.
As a consequence of the commit:
commit 4b239f458c229de044d6905c2b0f9fe16ed9e01e
Author: Yinghai Lu
Date: Fri Dec 17 16:58:28 2010 -0800x86-64, mm: Put early page table high
at some point init_memory_mapping is going to reach the pagetable pages
area and map those pages too (mapping them as normal memory that falls
in the range of addresses passed to init_memory_mapping as argument).
Some of those pages are already pagetable pages (they are in the range
pgt_buf_start-pgt_buf_end) therefore they are going to be mapped RO and
everything is fine.
Some of these pages are not pagetable pages yet (they fall in the range
pgt_buf_end-pgt_buf_top; for example the page at pgt_buf_end) so they
are going to be mapped RW. When these pages become pagetable pages and
are hooked into the pagetable, xen will find that the guest has already
a RW mapping of them somewhere and fail the operation.
The reason Xen requires pagetables to be RO is that the hypervisor needs
to verify that the pagetables are valid before using them. The validation
operations are called "pinning" (more details in arch/x86/xen/mmu.c).In order to fix the issue we mark all the pages in the entire range
pgt_buf_start-pgt_buf_top as RO, however when the pagetable allocation
is completed only the range pgt_buf_start-pgt_buf_end is reserved by
init_memory_mapping. Hence the kernel is going to crash as soon as one
of the pages in the range pgt_buf_end-pgt_buf_top is reused (b/c those
ranges are RO).For this reason we need a hook to reserve the kernel pagetable pages we
used and free the other ones so that they can be reused for other
purposes.
On native it just means calling memblock_x86_reserve_range, on Xen it
also means marking RW the pagetable pages that we allocated before but
that haven't been used before.Another way to fix this is without using the hook is by adding a 'if
(xen_pv_domain)' in the 'init_memory_mapping' code and calling the Xen
counterpart, but that is just nasty.Signed-off-by: Stefano Stabellini
Acked-by: Yinghai Lu
Acked-by: H. Peter Anvin
Cc: Ingo Molnar
Signed-off-by: Konrad Rzeszutek Wilk
16 Mar, 2011
1 commit
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The isci driver needs to retrieve its preboot OROM image which contains
necessary runtime parameters like platform specific sas addresses and
phy configuration. There is no ROM BAR associated with this area,
instead we will need to scan legacy expansion ROM space.1/ Promote the probe_roms_32 implementation to x86-64
2/ Add a facility to find and map an adapter rom by pci device (according to
PCI Firmware Specification Revision 3.0)Signed-off-by: Dave Jiang
LKML-Reference:
Signed-off-by: Dan Williams
Signed-off-by: H. Peter Anvin
15 Feb, 2011
1 commit
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Some wall clock devices use MMIO based HW register, this new
function will give them a chance to do some initialization work
before their get/set_time service get called, which is usually
in early kernel boot phase.Signed-off-by: Feng Tang
Signed-off-by: Jacob Pan
Signed-off-by: Alan Cox
Signed-off-by: Thomas Gleixner
18 Oct, 2010
1 commit
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Introduce an x86 specific indirect mechanism to setup MSIs.
The MSI setup functions become function pointers in an x86_msi_ops
struct, that defaults to the implementation in io_apic.c and msi.c.[v2: Use HAVE_DEFAULT_* knobs]
Signed-off-by: Stefano Stabellini
Reviewed-by: Konrad Rzeszutek Wilk
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: x86@kernel.org
Cc: Jesse Barnes
08 Jul, 2010
2 commits
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Some x86 platforms like Intel MID platforms don't have i8042 controllers,
and i8042 driver's probe to some legacy IO ports may hang the MID
processor. With this hook, i8042 driver can runtime check and skip the
probe when the pretection fail which also saves some probe time[ hpa note: this is currently a compile-time check, which breaks the
i386 allyesconfig build. This patch series thus does fix a regression. ]Signed-off-by: Feng Tang
LKML-Reference:
Acked-by: Dmitry Torokhov
Signed-off-by: H. Peter Anvin -
Export x86_platform to modules in preparation of using it for i8042
discovery control.Signed-off-by: H. Peter Anvin
LKML-Reference:
Cc: Thomas Gleixner
Cc: Feng Tang
Cc: Dmitry Torokhov
08 Mar, 2010
1 commit
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* 'x86-mrst-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (30 commits)
x86, mrst: Fix whitespace breakage in apb_timer.c
x86, mrst: Fix APB timer per cpu clockevent
x86, mrst: Remove X86_MRST dependency on PCI_IOAPIC
x86, olpc: Use pci subarch init for OLPC
x86, pci: Add arch_init to x86_init abstraction
x86, mrst: Add Kconfig dependencies for Moorestown
x86, pci: Exclude Moorestown PCI code if CONFIG_X86_MRST=n
x86, numaq: Make CONFIG_X86_NUMAQ depend on CONFIG_PCI
x86, pci: Add sanity check for PCI fixed bar probing
x86, legacy_irq: Remove duplicate vector assigment
x86, legacy_irq: Remove left over nr_legacy_irqs
x86, mrst: Platform clock setup code
x86, apbt: Moorestown APB system timer driver
x86, mrst: Add vrtc platform data setup code
x86, mrst: Add platform timer info parsing code
x86, mrst: Fill in PCI functions in x86_init layer
x86, mrst: Add dummy legacy pic to platform setup
x86/PCI: Moorestown PCI support
x86, ioapic: Add dummy ioapic functions
x86, ioapic: Early enable ioapic for timer irq
...Fixed up semantic conflict of new clocksources due to commit
17622339af25 ("clocksource: add argument to resume callback").
27 Feb, 2010
1 commit
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Enable NMI on all cpus in UV system and add an NMI handler
to dump_stack on each cpu.By default on x86 all the cpus except the boot cpu have NMI
masked off. This patch enables NMI on all cpus in UV system
and adds an NMI handler to dump_stack on each cpu. This
way if a system hangs we can NMI the machine and get a
backtrace from all the cpus.Version 2: Use x86_platform driver mechanism for nmi init, per
Ingo's suggestion.Version 3: Clean up Ingo's nits.
Signed-off-by: Russ Anderson
LKML-Reference:
Signed-off-by: Ingo Molnar
20 Feb, 2010
3 commits
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Platforms like Moorestown want to override the pcibios_fixup_irqs
default function. Add it to x86_init.pci.Signed-off-by: Thomas Gleixner
LKML-Reference:
Acked-by: Jesse Barnes
Signed-off-by: Jacob Pan
Signed-off-by: H. Peter Anvin -
Moorestown wants to reuse pcibios_init_irq but needs to provide its
own implementation of pci_enable_irq. After we distangled the init we
can move the init_irq call to x86_init and remove the pci_enable_irq
!= NULL check in pcibios_init_irq. pci_enable_irq is compile time
initialized to pirq_enable_irq and the special cases which override it
(visws and acpi) set the x86_init function pointer to noop. That
allows MSRT to override pci_enable_irq and otherwise run
pcibios_init_irq unmodified.Signed-off-by: Thomas Gleixner
LKML-Reference:
Acked-by: Jesse Barnes
Signed-off-by: Jacob Pan
Signed-off-by: H. Peter Anvin -
The PCI initialization in pci_subsys_init() is a mess. pci_numaq_init,
pci_acpi_init, pci_visws_init and pci_legacy_init are called and each
implementation checks and eventually modifies the global variable
pcibios_scanned.x86_init functions allow us to do this more elegant. The pci.init
function pointer is preset to pci_legacy_init. numaq, acpi and visws
can modify the pointer in their early setup functions. The functions
return 0 when they did the full initialization including bus scan. A
non zero return value indicates that pci_legacy_init needs to be
called either because the selected function failed or wants the
generic bus scan in pci_legacy_init to happen (e.g. visws).Signed-off-by: Thomas Gleixner
LKML-Reference:
Acked-by: Jesse Barnes
Signed-off-by: Jacob Pan
Signed-off-by: H. Peter Anvin
09 Dec, 2009
1 commit
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* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (36 commits)
x86, mm: Correct the implementation of is_untracked_pat_range()
x86/pat: Trivial: don't create debugfs for memtype if pat is disabled
x86, mtrr: Fix sorting of mtrr after subtracting
x86: Move find_smp_config() earlier and avoid bootmem usage
x86, platform: Change is_untracked_pat_range() to bool; cleanup init
x86: Change is_ISA_range() into an inline function
x86, mm: is_untracked_pat_range() takes a normal semiclosed range
x86, mm: Call is_untracked_pat_range() rather than is_ISA_range()
x86: UV SGI: Don't track GRU space in PAT
x86: SGI UV: Fix BAU initialization
x86, numa: Use near(er) online node instead of roundrobin for NUMA
x86, numa, bootmem: Only free bootmem on NUMA failure path
x86: Change crash kernel to reserve via reserve_early()
x86: Eliminate redundant/contradicting cache line size config options
x86: When cleaning MTRRs, do not fold WP into UC
x86: remove "extern" from function prototypes in
x86, mm: Report state of NX protections during boot
x86, mm: Clean up and simplify NX enablement
x86, pageattr: Make set_memory_(x|nx) aware of NX support
x86, sleep: Always save the value of EFER
...Fix up conflicts (added both iommu_shutdown and is_untracked_pat_range)
to 'struct x86_platform_ops') in
arch/x86/include/asm/x86_init.h
arch/x86/kernel/x86_init.c
24 Nov, 2009
2 commits
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- Change is_untracked_pat_range() to return bool.
- Clean up the initialization of is_untracked_pat_range() -- by default,
we simply point it at is_ISA_range() directly.
- Move is_untracked_pat_range to the end of struct x86_platform, since
it is the newest field.Signed-off-by: H. Peter Anvin
Acked-by: Thomas Gleixner
Cc: Jack Steiner
LKML-Reference: -
GRU space is always mapped as WB in the page table. There is
no need to track the mappings in the PAT. This also eliminates
the "freeing invalid memtype" messages when the GRU space is
unmapped.Signed-off-by: Jack Steiner
LKML-Reference:
[ v2: fix build failure ]
Signed-off-by: Ingo Molnar
16 Nov, 2009
1 commit
-
It causes kernel panic on shutdown or reboot.
Signed-off-by: Hiroshi Shimamoto
Acked-by: FUJITA Tomonori
LKML-Reference:
Signed-off-by: Ingo Molnar
15 Nov, 2009
1 commit
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iommu_init_noop() is in arch/x86/kernel/x86_init.c but
iommu_shutdown_noop() in arch/x86/include/asm/iommu.h.This moves iommu_shutdown_noop() to x86_init.c for consistency.
Signed-off-by: FUJITA Tomonori
LKML-Reference:
Signed-off-by: Ingo Molnar
10 Nov, 2009
1 commit
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We call the detections functions of all the IOMMUs then all
their initialization functions. The latter is pointless since we
don't detect multiple different IOMMUs. What we need to do is
calling the initialization function of the detected IOMMU.This adds iommu_init hook to x86_init_ops so if an IOMMU
detection function can set its initialization function to the
hook.Signed-off-by: FUJITA Tomonori
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
LKML-Reference:
Signed-off-by: Ingo Molnar
08 Nov, 2009
1 commit
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This patch cleans up pci_iommu_shutdown() a bit to use
x86_platform (similar to how IA64 initializes an IOMMU driver).This adds iommu_shutdown() to x86_platform to avoid calling
every IOMMUs' shutdown functions in pci_iommu_shutdown() in
order. The IOMMU shutdown functions are platform specific (we
don't have multiple different IOMMU hardware) so the current way
is pointless.An IOMMU driver sets x86_platform.iommu_shutdown to the shutdown
function if necessary.Signed-off-by: FUJITA Tomonori
Cc: joerg.roedel@amd.com
LKML-Reference:
Signed-off-by: Ingo Molnar
16 Sep, 2009
2 commits
-
get/set_wallclock() have already a set of platform dependent
implementations (default, EFI, paravirt). MRST will add another
variant.Moving them to platform ops simplifies the existing code and minimizes
the effort to integrate new variants.Signed-off-by: Feng Tang
LKML-Reference:
Signed-off-by: Thomas Gleixner -
init_IRQ() and x86_late_time_init() are missing __init annotations.
The x86 platform ops variables are annotated, but the annotation needs
to be put between the variable name and the "=" of the initializer.Signed-off-by: Thomas Gleixner
31 Aug, 2009
11 commits
-
Platforms like Moorestown require early setup and want to avoid the
call to reserve_ebda_region. The x86_init override is too late when
the MRST detection happens in setup_arch. Move the default i386
x86_init overrides and the call to reserve_ebda_region into a separate
function which is called as the default of a switch case depending on
the hardware_subarch id in boot params. This allows us to add a case
for MRST and let MRST have its own early setup function.Signed-off-by: Thomas Gleixner
-
TSC calibration is modified by the vmware hypervisor and paravirt by
separate means. Moorestown wants to add its own calibration routine as
well. So make calibrate_tsc a proper x86_init_ops function and
override it by paravirt or by the early setup of the vmware
hypervisor.Signed-off-by: Thomas Gleixner
-
The timer init code is convoluted with several quirks and the paravirt
timer chooser. Figuring out which code path is actually taken is not
for the faint hearted.Move the numaq TSC quirk to tsc_pre_init x86_init_ops function and
replace the paravirt time chooser and the remaining x86 quirk with a
simple x86_init_ops function.Signed-off-by: Thomas Gleixner
-
paravirt overrides the setup of the default apic timers as per cpu
timers. Moorestown needs to override that as well.Move it to x86_init_ops setup and create a separate x86_cpuinit struct
which holds the function for the secondary evtl. hotplugabble CPUs.Signed-off-by: Thomas Gleixner
-
Replace more paravirt hackery by proper x86_init_ops.
Signed-off-by: Thomas Gleixner
-
Replace another obscure paravirt magic and move it to
x86_init_ops. Such a hook is also useful for embedded and special
hardware.Signed-off-by: Thomas Gleixner
-
ARCH_SETUP is a horrible leftover from the old arch/i386 mach support
code. It still has a lonely user in xen. Move it to x86_init_ops.Signed-off-by: Thomas Gleixner
-
Replace the quirks by a simple x86_init_ops function.
Signed-off-by: Thomas Gleixner
-
irq_init is overridden by x86_quirks and by paravirts. Unify the whole
mess and make it an unconditional x86_init_ops function which defaults
to the standard function and can be overridden by the early platform
code.Signed-off-by: Thomas Gleixner
-
Replace the quirk machinery by a x86_init_ops function which
defaults to the standard implementation. This is also a preparatory
patch for Moorestown support which needs to replace the default
init_ISA_irqs as well.Signed-off-by: Thomas Gleixner
-
Replace the quirk machinery by a x86_init_ops function which defaults
to the standard implementation.Signed-off-by: Thomas Gleixner
27 Aug, 2009
3 commits
-
Signed-off-by: Thomas Gleixner
-
Move smp_read_mpc_oem from quirks to x86_init.
Signed-off-by: Thomas Gleixner
-
The mpc_apic_id setup is handled by a x86_quirk. Make it a
x86_init_ops function with a default implementation.Signed-off-by: Thomas Gleixner