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2012-10-01Merge tag 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds
Pull PCI changes from Bjorn Helgaas: "Host bridge hotplug - Protect acpi_pci_drivers and acpi_pci_roots (Taku Izumi) - Clear host bridge resource info to avoid issue when releasing (Yinghai Lu) - Notify acpi_pci_drivers when hot-plugging host bridges (Jiang Liu) - Use standard list ops for acpi_pci_drivers (Jiang Liu) Device hotplug - Use pci_get_domain_bus_and_slot() to close hotplug races (Jiang Liu) - Remove fakephp driver (Bjorn Helgaas) - Fix VGA ref count in hotplug remove path (Yinghai Lu) - Allow acpiphp to handle PCIe ports without native hotplug (Jiang Liu) - Implement resume regardless of pciehp_force param (Oliver Neukum) - Make pci_fixup_irqs() work after init (Thierry Reding) Miscellaneous - Add pci_pcie_type(dev) and remove pci_dev.pcie_type (Yijing Wang) - Factor out PCI Express Capability accessors (Jiang Liu) - Add pcibios_window_alignment() so powerpc EEH can use generic resource assignment (Gavin Shan) - Make pci_error_handlers const (Stephen Hemminger) - Cleanup drivers/pci/remove.c (Bjorn Helgaas) - Improve Vendor-Specific Extended Capability support (Bjorn Helgaas) - Use standard list ops for bus->devices (Bjorn Helgaas) - Avoid kmalloc in pci_get_subsys() and pci_get_class() (Feng Tang) - Reassign invalid bus number ranges (Intel DP43BF workaround) (Yinghai Lu)" * tag 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (102 commits) PCI: acpiphp: Handle PCIe ports without native hotplug capability PCI/ACPI: Use acpi_driver_data() rather than searching acpi_pci_roots PCI/ACPI: Protect acpi_pci_roots list with mutex PCI/ACPI: Use acpi_pci_root info rather than looking it up again PCI/ACPI: Pass acpi_pci_root to acpi_pci_drivers' add/remove interface PCI/ACPI: Protect acpi_pci_drivers list with mutex PCI/ACPI: Notify acpi_pci_drivers when hot-plugging PCI root bridges PCI/ACPI: Use normal list for struct acpi_pci_driver PCI/ACPI: Use DEVICE_ACPI_HANDLE rather than searching acpi_pci_roots PCI: Fix default vga ref_count ia64/PCI: Clear host bridge aperture struct resource x86/PCI: Clear host bridge aperture struct resource PCI: Stop all children first, before removing all children Revert "PCI: Use hotplug-safe pci_get_domain_bus_and_slot()" PCI: Provide a default pcibios_update_irq() PCI: Discard __init annotations for pci_fixup_irqs() and related functions PCI: Use correct type when freeing bus resource list PCI: Check P2P bridge for invalid secondary/subordinate range PCI: Convert "new_id"/"remove_id" into generic pci_bus driver attributes xen-pcifront: Use hotplug-safe pci_get_domain_bus_and_slot() ...
2012-09-24Merge branch 'pci/yinghai-misc' into nextBjorn Helgaas
2012-09-21x86/PCI: Clear host bridge aperture struct resourceYinghai Lu
Use kzalloc() so the struct resource doesn't contain garbage in fields we don't initialize. [bhelgaas: changelog] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: x86@kernel.org
2012-09-19arch/x86: Remove unecessary semicolonsPeter Senna Tschudin
Found by http://coccinelle.lip6.fr/ Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Cc: avi@redhat.com Cc: mtosatti@redhat.com Cc: a.p.zijlstra@chello.nl Cc: rusty@rustcorp.com.au Cc: masami.hiramatsu.pt@hitachi.com Cc: suresh.b.siddha@intel.com Cc: joerg.roedel@amd.com Cc: agordeev@redhat.com Cc: yinghai@kernel.org Cc: bhelgaas@google.com Cc: liuj97@gmail.com Link: http://lkml.kernel.org/r/1347986174-30287-7-git-send-email-peter.senna@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-09-18PCI: Provide a default pcibios_update_irq()Thierry Reding
Most architectures implement this in exactly the same way. Instead of having each architecture duplicate this function, provide a single implementation in the core and make it a weak symbol so that it can be overridden on architectures where it is required. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-09-18PCI: Discard __init annotations for pci_fixup_irqs() and related functionsThierry Reding
Remove the __init annotations in order to keep pci_fixup_irqs() around after init (e.g. for hotplug). This requires the same change for the implementation of pcibios_update_irq() on all architectures. While at it, all __devinit annotations are removed as well, since they will be useless now that HOTPLUG is always on. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-05Merge branch 'pci/myron-pcibios_setup' into nextBjorn Helgaas
* pci/myron-pcibios_setup: xtensa/PCI: factor out pcibios_setup() x86/PCI: adjust section annotations for pcibios_setup() unicore32/PCI: adjust section annotations for pcibios_setup() tile/PCI: factor out pcibios_setup() sparc/PCI: factor out pcibios_setup() sh/PCI: adjust section annotations for pcibios_setup() sh/PCI: factor out pcibios_setup() powerpc/PCI: factor out pcibios_setup() parisc/PCI: factor out pcibios_setup() MIPS/PCI: adjust section annotations for pcibios_setup() MIPS/PCI: factor out pcibios_setup() microblaze/PCI: factor out pcibios_setup() ia64/PCI: factor out pcibios_setup() cris/PCI: factor out pcibios_setup() alpha/PCI: factor out pcibios_setup() PCI: pull pcibios_setup() up into core
2012-07-05x86/PCI: adjust section annotations for pcibios_setup()Myron Stowe
Make pcibios_setup() consistently use the "__init" section annotation. Signed-off-by: Myron Stowe <myron.stowe@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-23Merge branch 'topic/huang-d3cold-v7' into nextBjorn Helgaas
* topic/huang-d3cold-v7: PCI/PM: add PCIe runtime D3cold support PCI: do not call pci_set_power_state with PCI_D3cold PCI/PM: add runtime PM support to PCIe port ACPI/PM: specify lowest allowed state for device sleep state
2012-06-23PCI: do not call pci_set_power_state with PCI_D3coldHuang Ying
PCI subsystem has not been ready for D3cold support yet. So PCI_D3cold should not be used as parameter for pci_set_power_state. This patch is needed for upcoming PCI_D3cold support. This patch has no functionality change, because pci_set_power_state will bound the parameter to PCI_D3hot too. CC: Michal Miroslaw <mirq-linux@rere.qmqm.pl> CC: Jesse Barnes <jesse.barnes@intel.com> Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-22x86/PCI: use pr_level() to replace printk(KERN_LEVEL)Jiang Liu
Script checkpatch.pl recommends to replace printk(KERN_LVL) with pr_lvl(), so do it. Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-22x86/PCI: refine __pci_mmcfg_init() for better code readabilityJiang Liu
Refine __pci_mmcfg_init() for better code readability. Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-22x86/PCI: get rid of redundant log messagesJiang Liu
For each resource of a PCI host bridge, the arch code and PCI code log following messages. We don't need both, so drop the arch-specific printing. pci_root PNP0A08:00: host bridge window [io 0x0000-0x03af] pci_bus 0000:00: root bus resource [io 0x0000-0x03af] Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-22x86/PCI: simplify pci_mmcfg_late_insert_resources()Jiang Liu
Reduce redundant code to simplify pci_mmcfg_late_insert_resources(). Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-22x86/PCI: update MMCONFIG information when hot-plugging PCI host bridgesJiang Liu
This patch enhances x86 arch-specific code to update MMCONFIG information when PCI host bridge hotplug event happens. Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-22x86/PCI: add pci_mmconfig_insert()/delete() for PCI root bridge hotplugJiang Liu
Introduce pci_mmconfig_insert()/pci_mmconfig_delete(), which will be used to update MMCONFIG information when supporting PCI root bridge hotplug. Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-22x86/PCI: prepare pci_mmcfg_check_reserved() to be called at runtimeJiang Liu
Prepare function pci_mmcfg_check_reserved() to be called at runtime for PCI host bridge hot-plugging Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-22x86/PCI: introduce pci_mmcfg_arch_map()/pci_mmcfg_arch_unmap()Jiang Liu
Introduce pci_mmcfg_arch_map()/pci_mmcfg_arch_unmap(), which will be used when supporting PCI root bridge hotplug. Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-22x86/PCI: use RCU list to protect mmconfig listJiang Liu
Use RCU list to protect mmconfig list from dynamic change when supporting PCI host bridge hotplug. Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-22x86/PCI: split out pci_mmconfig_alloc() for code reuseJiang Liu
Split out pci_mmconfig_alloc() for code reuse, which will be used when supporting PCI root bridge hotplug. Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-22x86/PCI: split out pci_mmcfg_check_reserved() for code reuseJiang Liu
Split out pci_mmcfg_check_reserved() for code reuse, which will be used when supporting PCI host bridge hotplug. Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-13x86/PCI: put busn resource in pci_root_info for native host bridge driversYinghai Lu
Add the host bridge bus number aperture to the resource list. Like the MMIO and I/O port apertures, this will be used when assigning resources to hot-added devices or in the case of conflicts. [bhelgaas: changelog, tidy printk] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-13x86/PCI: use _CRS bus number aperture for host bridges from ACPIYinghai Lu
Add the host bridge bus number aperture from _CRS to the resource list. Like the MMIO and I/O port apertures, this will be used when assigning resources to hot-added devices or in the case of conflicts. Note that we always use the _CRS bus number aperture, even if we're ignoring _CRS otherwise. [bhelgaas: changelog] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-13PCI: replace struct pci_bus secondary/subordinate with busn_resYinghai Lu
Replace the struct pci_bus secondary/subordinate members with the struct resource busn_res. Later we'll build a resource tree of these bus numbers. [bhelgaas: changelog] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-05-24Merge tag 'stable/for-linus-3.5-rc0-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull Xen updates from Konrad Rzeszutek Wilk: "Features: * Extend the APIC ops implementation and add IRQ_WORKER vector support so that 'perf' can work properly. * Fix self-ballooning code, and balloon logic when booting as initial domain. * Move array printing code to generic debugfs * Support XenBus domains. * Lazily free grants when a domain is dead/non-existent. * In M2P code use batching calls Bug-fixes: * Fix NULL dereference in allocation failure path (hvc_xen) * Fix unbinding of IRQ_WORKER vector during vCPU hot-unplug * Fix HVM guest resume - we would leak an PIRQ value instead of reusing the existing one." Fix up add-add onflicts in arch/x86/xen/enlighten.c due to addition of apic ipi interface next to the new apic_id functions. * tag 'stable/for-linus-3.5-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: do not map the same GSI twice in PVHVM guests. hvc_xen: NULL dereference on allocation failure xen: Add selfballoning memory reservation tunable. xenbus: Add support for xenbus backend in stub domain xen/smp: unbind irqworkX when unplugging vCPUs. xen: enter/exit lazy_mmu_mode around m2p_override calls xen/acpi/sleep: Enable ACPI sleep via the __acpi_os_prepare_sleep xen: implement IRQ_WORK_VECTOR handler xen: implement apic ipi interface xen/setup: update VA mapping when releasing memory during setup xen/setup: Combine the two hypercall functions - since they are quite similar. xen/setup: Populate freed MFNs from non-RAM E820 entries and gaps to E820 RAM xen/setup: Only print "Freeing XXX-YYY pfn range: Z pages freed" if Z > 0 xen/gnttab: add deferred freeing logic debugfs: Add support to print u32 array in debugfs xen/p2m: An early bootup variant of set_phys_to_machine xen/p2m: Collapse early_alloc_p2m_middle redundant checks. xen/p2m: Allow alloc_p2m_middle to call reserve_brk depending on argument xen/p2m: Move code around to allow for better re-usage.
2012-05-24Merge branch 'drm-core-next' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull main drm updates from Dave Airlie: "This is the main merge window request for the drm. It's big, but jam packed will lots of features and of course 0 regressions. (okay maybe there'll be one). Highlights: - new KMS drivers for server GPU chipsets: ast, mgag200 and cirrus (qemu only). These drivers use the generic modesetting drivers. - initial prime/dma-buf support for i915, nouveau, radeon, udl and exynos - switcheroo audio support: so GPUs with HDMI can turn off the sound driver without crashing stuff. - There are some patches drifting outside drivers/gpu into x86 and EFI for better handling of multiple video adapters in Apple Macs, they've got correct acks except one trivial fixup. - Core: edid parser has better DMT and reduced blanking support, crtc properties, plane properties, - Drivers: exynos: add 2D core accel support, prime support, hdmi features intel: more Haswell support, initial Valleyview support, more hdmi infoframe fixes, update MAINTAINERS for Daniel, lots of cleanups and fixes radeon: more HDMI audio support, improved GPU lockup recovery support, remove nested mutexes, less memory copying on PCIE, fix bus master enable race (kexec), improved fence handling gma500: cleanups, 1080p support, acpi fixes nouveau: better nva3 memory reclocking, kepler accel (needs external firmware rip), async buffer moves on nv84+ hw. I've some more dma-buf patches that rely on the dma-buf merge for vmap stuff, and I've a few fixes building up, but I'd decided I'd better get rid of the main pull sooner rather than later, so the audio guys are also unblocked." Fix up trivial conflict due to some duplicated changes in drivers/gpu/drm/i915/intel_ringbuffer.c * 'drm-core-next' of git://people.freedesktop.org/~airlied/linux: (605 commits) drm/nouveau/nvd9: Fix GPIO initialisation sequence. drm/nouveau: Unregister switcheroo client on exit drm/nouveau: Check dsm on switcheroo unregister drm/nouveau: fix a minor annoyance in an output string drm/nouveau: turn a BUG into a WARN drm/nv50: decode PGRAPH DATA_ERROR = 0x24 drm/nouveau/disp: fix dithering not being enabled on some eDP macbooks drm/nvd9/copy: initialise copy engine, seems to work like nvc0 drm/nvc0/ttm: use copy engines for async buffer moves drm/nva3/ttm: use copy engine for async buffer moves drm/nv98/ttm: add in a (disabled) crypto engine buffer copy method drm/nv84/ttm: use crypto engine for async buffer copies drm/nouveau/ttm: untangle code to support accelerated buffer moves drm/nouveau/fbcon: use fence for sync, rather than notifier drm/nv98/crypt: non-stub implementation of the engine hooks drm/nouveau/fifo: turn all fifo modules into engine modules drm/nv50/graph: remove ability to do interrupt-driven context switching drm/nv50: remove manual context unload on context destruction drm/nv50: remove execution engine context saves on suspend drm/nv50/fifo: use hardware channel kickoff functionality ...
2012-05-23Merge branch 'x86-platform-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 platform changes from Ingo Molnar: "This tree includes assorted platform driver updates and a preparatory series for a platform with custom DMA remapping semantics (sta2x11 I/O hub)." * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/vsmp: Fix number of CPUs when vsmp is disabled keyboard: Use BIOS Keyboard variable to set Numlock x86/olpc/xo1/sci: Report RTC wakeup events x86/olpc/xo1/sci: Produce wakeup events for buttons and switches x86, platform: Initial support for sta2x11 I/O hub x86: Introduce CONFIG_X86_DMA_REMAP x86-32: Introduce CONFIG_X86_DEV_DMA_OPS
2012-05-23Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86/urgent branch from Ingo Molnar: "These are the fixes left over from the very end of the v3.4 stabilization cycle, plus one more fix." Ugh. Those KERN_CONT additions are just pointless. I think they came as a reaction to some of the early (broken) printk() work - but that was fixed before it was merged. * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, relocs: Build clean fix x86, printk: Add missing KERN_CONT to NMI selftest x86: Fix boot on Twinhead H12Y
2012-05-21xen: do not map the same GSI twice in PVHVM guests.Stefano Stabellini
PV on HVM guests map GSIs into event channels. At restore time the event channels are resumed by restore_pirqs. Device drivers might try to register the same GSI again through ACPI at restore time, but the GSI has already been mapped and bound by restore_pirqs. This patch detects these situations and avoids mapping the same GSI multiple times. Without this patch we get: (XEN) irq.c:2235: dom4: pirq 23 or emuirq 28 already mapped and waste a pirq. CC: stable@kernel.org Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-05-17x86: Fix boot on Twinhead H12YAlan Cox
Despite lots of investigation into why this is needed we don't know or have an elegant cure. The only answer found on this laptop is to mark a problem region as used so that Linux doesn't put anything there. Currently all the users add reserve= command lines and anyone not knowing this needs to find the magic page that documents it. Automate it instead. Signed-off-by: Alan Cox <alan@linux.intel.com> Tested-and-bugfixed-by: Arne Fitzenreiter <arne@fitzenreiter.de> Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=10231 Link: http://lkml.kernel.org/r/20120515174347.5109.94551.stgit@bluebook Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-05-17x86/vga: fix build with efi disabled.Dave Airlie
Reported by sfr on -next merge. Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-16x86/vga: set the default device from the fixup.Dave Airlie
Since Matthew's efi/vga changes on non-EFI machines we were failing to tell the vgaarb/switcheroo what the default device was, this sets the default device in the quirk if none has been set before. This fixes the switcheroo on my T410s. Cc: Matthew Garrett <mjg@redhat.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-15x86/PCI: only check for spinlock being held in SMP kernelsBjorn Helgaas
spin_is_locked() is always false on UP kernels: spin_lock_irqsave() does no locking, so we can't tell whether the lock is held or not. Therefore, this warning is only valid for SMP kernels. CC: Myron Stowe <myron.stowe@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-05-07resources: add resource_overlaps()Wei Yang
Add resource_overlaps(), which returns true if two resources overlap at all. Use this to replace the complicated check in coalesce_windows(). Signed-Off-By: Wei Yang <weiyang@linux.vnet.ibm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-05-07Merge branch 'topic/stratus' into nextBjorn Helgaas
2012-05-01x86/PCI: fix unused variable warning in amd_bus.cYinghai Lu
Fix this warning: arch/x86/pci/amd_bus.c: In function 'early_fill_mp_bus_info': arch/x86/pci/amd_bus.c:56:6: warning: unused variable 'j' [-Wunused-variable] introduced by commit d28e5ac2a07e ("x86/PCI: dynamically allocate pci_root_info for native host bridge drivers"). Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-04-30PCI: work around Stratus ftServer broken PCIe hierarchyBjorn Helgaas
A PCIe downstream port is a P2P bridge. Its secondary interface is a link that should lead only to device 0 (unless ARI is enabled)[1], so we don't probe for non-zero device numbers. Some Stratus ftServer systems have a PCIe downstream port (02:00.0) that leads to both an upstream port (03:00.0) and a downstream port (03:01.0), and 03:01.0 has important devices below it: [0000:02]-+-00.0-[03-3c]--+-00.0-[04-09]--... \-01.0-[0a-0d]--+-[USB] +-[NIC] +-... Previously, we didn't enumerate device 03:01.0, so USB and the network didn't work. This patch adds a DMI quirk to scan all device numbers, not just 0, below a downstream port. Based on a patch by Prarit Bhargava. [1] PCIe spec r3.0, sec 7.3.1 CC: Myron Stowe <mstowe@redhat.com> CC: Don Dutile <ddutile@redhat.com> CC: James Paradis <james.paradis@stratus.com> CC: Matthew Wilcox <matthew.r.wilcox@intel.com> CC: Jesse Barnes <jbarnes@virtuousgeek.org> CC: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-04-30x86/PCI: merge pcibios_scan_root() and pci_scan_bus_on_node()Yinghai Lu
pcibios_scan_root() and pci_scan_bus_on_node() were almost identical, so this patch merges them. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-04-30x86/PCI: dynamically allocate pci_root_info for native host bridge driversYinghai Lu
This dynamically allocates struct pci_root_info instead of using a static array. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-04-30x86/PCI: embed pci_sysdata into pci_root_info on ACPI pathYinghai Lu
Embed the x86 struct pci_sysdata in the struct pci_root_info so it will be automatically freed in the remove path. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-04-30x86/PCI: embed name into pci_root_info structYinghai Lu
We now keep the pci_root_info struct for the entire lifetime of the host bridge, so just embed the name in the struct rather than allocating it separately. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-04-30x86/PCI: add host bridge resource release for _CRS pathYinghai Lu
1. Allocate pci_root_info instead of using stack. We need to pass around info for release function. 2. Add release_pci_root_info 3. Set x86 host bridge release function to make sure root bridge related resources get freed during root bus removal. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-04-30x86/PCI: refactor get_current_resources()Yinghai Lu
Rename get_current_resources() to probe_pci_root_info. 1. Remove resource list head from pci_root_info 2. Make get_current_resources() not pass resources 3. Rename get_current_resources() to probe_pci_root_info() Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-04-30x86/PCI: fix memleak with get_current_resources()Yinghai Lu
In pci_scan_acpi_root(), when pci_use_crs is set, get_current_resources() is used to get pci_root_info, and it will allocate name and resource array. Later if pci_create_root_bus() can not create bus (could be already there...) it will only free bus res list, but the name and res array is not freed. Let get_current_resource() take info pointer instead of using local info. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-04-12x86, platform: Initial support for sta2x11 I/O hubAlessandro Rubini
The "ConneXt" sta2x11 I/O Hub is a bridge from PCIe to AMBA, and is used as main chipset in some Atom boards. The set of peripherals it exports live in an AMBA bus internal to the chip, so a custom remapping of addresses is needed. This is implemented by fixup calls for the PCI deivices, based on CONFIG_X86_DEV_DMA_OPS and CONFIG_X86_DMA_REMAP . Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Link: http://lkml.kernel.org/r/ddca670ca8180e52d49b3fe642742ddd23ab2cb2.1333560789.git.rubini@gnudd.com Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2012-03-23Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci Pull PCI changes (including maintainer change) from Jesse Barnes: "This pull has some good cleanups from Bjorn and Yinghai, as well as some more code from Yinghai to better handle resource re-allocation when enabled. There's also a new initcall_debug feature from Arjan which will print out quirk timing information to help identify slow quirks for fixing or refinement (Yinghai sent in a few patches to do just that once the new debug code landed). Beyond that, I'm handing off PCI maintainership to Bjorn Helgaas. He's been a core PCI and Linux contributor for some time now, and has kindly volunteered to take over. I just don't feel I have the time for PCI review and work that it deserves lately (I've taken on some other projects), and haven't been as responsive lately as I'd like, so I approached Bjorn asking if he'd like to manage things. He's going to give it a try, and I'm confident he'll do at least as well as I have in keeping the tree managed, patches flowing, and keeping things stable." Fix up some fairly trivial conflicts due to other cleanups (mips device resource fixup cleanups clashing with list handling cleanup, ppc iseries removal clashing with pci_probe_only cleanup etc) * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci: (112 commits) PCI: Bjorn gets PCI hotplug too PCI: hand PCI maintenance over to Bjorn Helgaas unicore32/PCI: move <asm-generic/pci-bridge.h> include to asm/pci.h sparc/PCI: convert devtree and arch-probed bus addresses to resource powerpc/PCI: allow reallocation on PA Semi powerpc/PCI: convert devtree bus addresses to resource powerpc/PCI: compute I/O space bus-to-resource offset consistently arm/PCI: don't export pci_flags PCI: fix bridge I/O window bus-to-resource conversion x86/PCI: add spinlock held check to 'pcibios_fwaddrmap_lookup()' PCI / PCIe: Introduce command line option to disable ARI PCI: make acpihp use __pci_remove_bus_device instead PCI: export __pci_remove_bus_device PCI: Rename pci_remove_behind_bridge to pci_stop_and_remove_behind_bridge PCI: Rename pci_remove_bus_device to pci_stop_and_remove_bus_device PCI: print out PCI device info along with duration PCI: Move "pci reassigndev resource alignment" out of quirks.c PCI: Use class for quirk for usb host controller fixup PCI: Use class for quirk for ti816x class fixup PCI: Use class for quirk for intel e100 interrupt fixup ...
2012-03-23Merge tag 'stable/for-linus-3.4-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull xen updates from Konrad Rzeszutek Wilk: "which has three neat features: - PV multiconsole support, so that there can be hvc1, hvc2, etc; This can be used in HVM and in PV mode. - P-state and C-state power management driver that uploads said power management data to the hypervisor. It also inhibits cpufreq scaling drivers to load so that only the hypervisor can make power management decisions - fixing a weird perf bug. There is one thing in the Kconfig that you won't like: "default y if (X86_ACPI_CPUFREQ = y || X86_POWERNOW_K8 = y)" (note, that it all depends on CONFIG_XEN which depends on CONFIG_PARAVIRT which by default is off). I've a fix to convert that boolean expression into "default m" which I am going to post after the cpufreq git pull - as the two patches to make this work depend on a fix in Dave Jones's tree. - Function Level Reset (FLR) support in the Xen PCI backend. Fixes: - Kconfig dependencies for Xen PV keyboard and video - Compile warnings and constify fixes - Change over to use percpu_xxx instead of this_cpu_xxx" Fix up trivial conflicts in drivers/tty/hvc/hvc_xen.c due to changes to a removed commit. * tag 'stable/for-linus-3.4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen kconfig: relax INPUT_XEN_KBDDEV_FRONTEND deps xen/acpi-processor: C and P-state driver that uploads said data to hypervisor. xen: constify all instances of "struct attribute_group" xen/xenbus: ignore console/0 hvc_xen: introduce HVC_XEN_FRONTEND hvc_xen: implement multiconsole support hvc_xen: support PV on HVM consoles xenbus: don't free other end details too early xen/enlighten: Expose MWAIT and MWAIT_LEAF if hypervisor OKs it. xen/setup/pm/acpi: Remove the call to boot_option_idle_override. xenbus: address compiler warnings xen: use this_cpu_xxx replace percpu_xxx funcs xen/pciback: Support pci_reset_function, aka FLR or D3 support. pci: Introduce __pci_reset_function_locked to be used when holding device_lock. xen: Utilize the restore_msi_irqs hook.
2012-03-02x86/PCI: add spinlock held check to 'pcibios_fwaddrmap_lookup()'Myron Stowe
'pcibios_fwaddrmap_lookup()' is used to maintain FW-assigned BIOS BAR values for reinstatement when normal resource assignment attempts fail and must be called with the 'pcibios_fwaddrmap_lock' spinlock held. This patch adds a WARN_ON notification if the spinlock is not currently held by the caller. Signed-off-by: Myron Stowe <myron.stowe@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2012-03-01x86/PCI: do not tie MSI MS-7253 use_crs quirk to BIOS versionJonathan Nieder
Carlos was getting WARNING: at drivers/pci/pci.c:118 pci_ioremap_bar+0x24/0x52() when probing his sound card, and sound did not work. After adding pci=use_crs to the kernel command line, no more trouble. Ok, we can add a quirk. dmidecode output reveals that this is an MSI MS-7253, for which we already have a quirk, but the short-sighted author tied the quirk to a single BIOS version, making it not kick in on Carlos's machine with BIOS V1.2. If a later BIOS update makes it no longer necessary to look at the _CRS info it will still be harmless, so let's stop trying to guess which versions have and don't have accurate _CRS tables. Addresses https://bugtrack.alsa-project.org/alsa-bug/view.php?id=5533 Also see <https://bugzilla.kernel.org/show_bug.cgi?id=42619>. Reported-by: Carlos Luna <caralu74@gmail.com> Reviewed-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2012-02-28x86/PCI: use host bridge _CRS info on MSI MS-7253Jonathan Nieder
In the spirit of commit 29cf7a30f8a0 ("x86/PCI: use host bridge _CRS info on ASUS M2V-MX SE"), this DMI quirk turns on "pci_use_crs" by default on a board that needs it. This fixes boot failures and oopses introduced in 3e3da00c01d0 ("x86/pci: AMD one chain system to use pci read out res"). The quirk is quite targetted (to a specific board and BIOS version) for two reasons: (1) to emphasize that this method of tackling the problem one quirk at a time is a little insane (2) to give BIOS vendors an opportunity to use simpler tables and allow us to return to generic behavior (whatever that happens to be) with a later BIOS update In other words, I am not at all happy with having quirks like this. But it is even worse for the kernel not to work out of the box on these machines, so... Reference: https://bugzilla.kernel.org/show_bug.cgi?id=42619 Reported-by: Svante Signell <svante.signell@telia.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>