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2014-08-08x86, irq, PCI: Keep IRQ assignment for PCI devices during suspend/hibernationJiang Liu3-2/+7
Now IOAPIC driver dynamically allocates IRQ numbers for IOAPIC pins. We need to keep IRQ assignment for PCI devices during suspend/hibernation, otherwise it may cause failure of suspend/hibernation due to: 1) Device driver calls pci_enable_device() to allocate an IRQ number and register interrupt handler on the returned IRQ. 2) Device driver's suspend callback calls pci_disable_device() and release assigned IRQ in turn. 3) Device driver's resume callback calls pci_enable_device() to allocate IRQ number again. A different IRQ number may be assigned by IOAPIC driver this time. 4) Now the hardware delivers interrupt to the new IRQ but interrupt handler is still registered against the old IRQ, so it breaks suspend/hibernation. To fix this issue, we keep IRQ assignment during suspend/hibernation. Flag pci_dev.dev.power.is_prepared is used to detect that pci_disable_device() is called during suspend/hibernation. Reported-and-Tested-by: Borislav Petkov <bp@suse.de> Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Len Brown <lenb@kernel.org> Link: http://lkml.kernel.org/r/1407478071-29399-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-08-01x86/apic/vsmp: Make is_vsmp_box() staticH. Peter Anvin1-2/+2
Since checkin 411cf9ee2946 x86, vsmp: Remove is_vsmp_box() from apic_is_clustered_box() ... is_vsmp_box() is only used in vsmp_64.c and does not have any header file declaring it, so make it explicitly static. Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: Shai Fultheim <shai@scalemp.com> Cc: Oren Twaig <oren@scalemp.com> Link: http://lkml.kernel.org/r/1404036068-11674-1-git-send-email-oren@scalemp.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2014-07-31x86, apic: Remove enable_apic_mode callbackDavid Rientjes10-12/+0
The enable_apic_mode() apic callback is never called, so remove it. Signed-off-by: David Rientjes <rientjes@google.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302352320.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-07-31x86, apic: Remove setup_portio_remap callbackDavid Rientjes10-14/+0
Since commit b5660ba76b41 ("x86, platforms: Remove NUMAQ") removed NUMAQ, the setup_portio_remap() apic callback has been obsolete. Remove it. Signed-off-by: David Rientjes <rientjes@google.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302351480.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-07-31x86, apic: Remove multi_timer_check callbackDavid Rientjes10-26/+0
Since commit b5660ba76b41 ("x86, platforms: Remove NUMAQ") removed NUMAQ, the multi_timer_check() apic callback has been obsolete. Remove it. Signed-off-by: David Rientjes <rientjes@google.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302351120.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-07-31x86, apic: Replace noop_check_apicid_usedDavid Rientjes1-6/+1
noop_check_apicid_used() has the same implementation as default_check_apicid_used() in the standard header file, so replace the former with the latter. Signed-off-by: David Rientjes <rientjes@google.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302350450.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-07-31x86, apic: Remove check_apicid_present callbackDavid Rientjes9-25/+0
The check_apicid_present() apic callback is never called, so remove it and functions that implement it. Signed-off-by: David Rientjes <rientjes@google.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302350160.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-07-31x86, apic: Remove mps_oem_check callbackDavid Rientjes11-45/+1
Since commit b5660ba76b41 ("x86, platforms: Remove NUMAQ") removed NUMAQ, the mps_oem_check() apic callback has been obsolete. Remove it. This allows generic_mps_oem_check() to be removed as well. Signed-off-by: David Rientjes <rientjes@google.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302349390.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-07-31x86, apic: Remove smp_callin_clear_local_apic callbackDavid Rientjes10-14/+0
Since commit b5660ba76b41 ("x86, platforms: Remove NUMAQ") removed NUMAQ, the smp_callin_clear_local_apic() apic callback has been obsolete. Remove it. Signed-off-by: David Rientjes <rientjes@google.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302349040.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-07-31x86, apic: Replace trampoline physical addresses with defaultsDavid Rientjes10-33/+8
The trampoline_phys_{high,low} members of struct apic are always initialized to DEFAULT_TRAMPOLINE_PHYS_HIGH and TRAMPOLINE_PHYS_LOW, respectively. Hardwire the constants and remove the unneeded members. Signed-off-by: David Rientjes <rientjes@google.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302348330.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-07-31x86, apic: Remove x86_32_numa_cpu_node callbackDavid Rientjes2-19/+0
Since commit b5660ba76b41 ("x86, platforms: Remove NUMAQ") removed NUMAQ, the x86_32_numa_cpu_node() apic callback has been obsolete. Remove it. Signed-off-by: David Rientjes <rientjes@google.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302348060.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-07-14x86: intel-mid: Use the new io_apic interfacesJiang Liu1-16/+6
Commit 9f354b0252b8 "x86, irq: Clean up unused IOAPIC interface" kills interface io_apic_set_pci_routing(), so change arch/x86/platform/ intel-mid/device_libs/platform_wdt.c to use new interfaces. Due to hardware resource restriction, this patch only passes compilation without functional tests. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Acked-by: David Cohen <david.a.cohen@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Tang Feng <feng.tang@intel.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/1403490643-26187-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-07-13x86, vsmp: Remove is_vsmp_box() from apic_is_clustered_box()Oren Twaig2-67/+1
When a vSMP Foundation box is detected, the function apic_cluster_num() counts the number of APIC clusters found. If more than one found, a multi board configuration is assumed, and TSC marked as unstable. This behavior is incorrect as vSMP Foundation may use processors from single node only, attached to memory of other nodes - and such node may have more than one APIC cluster (typically any recent intel box has more than single APIC_CLUSTERID(x)). To fix this, we simply remove the code which detects a vSMP Foundation box and affects apic_is_clusted_box() return value. This can be done because later the kernel checks by itself if the TSC is stable using the check_tsc_sync_[source|target]() functions and marks TSC as unstable if needed. Acked-by: Shai Fultheim <shai@scalemp.com> Signed-off-by: Oren Twaig <oren@scalemp.com> Link: http://lkml.kernel.org/r/1404036068-11674-1-git-send-email-oren@scalemp.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-06-21x86, irq: Clean up irqdomain transition codeJiang Liu1-17/+11
Now we have completely switched to irqdomain, so clean up transition code in IOAPIC drivers. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-43-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq, devicetree: Release IOAPIC pin when PCI device is disabledJiang Liu1-0/+1
Release IOAPIC pin associated with PCI device when the PCI device is disabled. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Tony Lindgren <tony@atomide.com> Link: http://lkml.kernel.org/r/1402302011-23642-42-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq, SFI: Release IOAPIC pin when PCI device is disabledJiang Liu1-0/+7
Release IOAPIC pin associated with PCI device when the PCI device is disabled. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-41-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq, mpparse: Release IOAPIC pin when PCI device is disabledJiang Liu2-2/+12
Release IOAPIC pin associated with PCI device when the PCI device is disabled. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-40-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq, ACPI: Release IOAPIC pin when PCI device is disabledJiang Liu2-1/+29
Release IOAPIC pin associated with PCI device when the PCI device is disabled. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Link: http://lkml.kernel.org/r/1402380987-32577-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq: Introduce helper functions to release IOAPIC pinJiang Liu2-0/+64
Introduce function mp_unmap_irq() to release IOAPIC IRQ when IRQ is not used any more, which will typically called by pcibios_disabled_irq. And function mp_irqdomain_unmap() is a common implementation of irq_domain_ops.unmap for IOAPIC. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-38-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq: Simplify the way to handle ISA IRQJiang Liu2-73/+40
On startup, setup_IO_APIC_irqs() will program all IOAPIC pins for ISA IRQs. Later when mp_map_pin_to_irq() is called, it just returns ISA IRQ number without programming corresponding IOAPIC pin. This patch consolidates the way to program IOAPIC pins for both ISA and non-ISA IRQs into mp_map_pin_to_irq() as below: 1) For ISA IRQs, mp_irqs array is used to map IOAPIC pin to IRQ and mp_irqdomain_map() is used to actually program the pin. 2) For non-ISA IRQs, irqdomain is used to map IOAPIC pin to IRQ, and mp_irqdomain_map() is also used to actually program the pin. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Link: http://lkml.kernel.org/r/1402302011-23642-36-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq: Clean up unused IOAPIC interfaceJiang Liu2-79/+0
Now we have converted all x86 platforms to use the common irqdomain map interface. There's no caller of io_apic_set_pci_routing(), setup_IO_APIC_irq_extra() and io_apic_setup_irq_pin_once() any more, so kill them. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-35-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq, devicetree: Use common irqdomain map interface to program IOAPIC pinsJiang Liu1-9/+5
Refine devicetree to use common irqdomain map interface to program IOAPIC pins, so we can unify the callsite to progam IOAPIC pins. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Tony Lindgren <tony@atomide.com> Link: http://lkml.kernel.org/r/1402302011-23642-34-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq, SFI: Use common irqdomain map interface to program IOAPIC pinsJiang Liu3-46/+35
Refine SFI to use common irqdomain map interface to program IOAPIC pins, so we can unify the callsite to progam IOAPIC pins. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: sfi-devel@simplefirmware.org Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <lenb@kernel.org> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Link: http://lkml.kernel.org/r/1402302011-23642-33-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq, mpparse: Use common irqdomain map interface to program IOAPIC pinsJiang Liu2-3/+3
Refine mpparse to use common irqdomain map interface to program IOAPIC pins, so we can unify the callsite to progam IOAPIC pins. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-32-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq, ACPI: Use common irqdomain map interface to program IOAPIC pinsJiang Liu1-32/+12
Refine ACPI to use common irqdomain map interface to program IOAPIC pins, so we can unify the callsite to progam IOAPIC pins. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Link: http://lkml.kernel.org/r/1402302011-23642-31-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq: Introduce two helper functions to support irqdomain map operationJiang Liu2-1/+103
Currently there are multiple entries to program IOAPIC pins, such as io_apic_setup_irq_pin_once(), io_apic_set_pci_routing() and setup_IO_APIC_irq_extra() etc. This patch introduces two functions to help consolidate the code to program IOAPIC pins. Function mp_set_pin_attr() is used to optionally set trigger, polarity and NUMA node property for an IOAPIC pin. If mp_set_pin_attr() is not invoked for a pin, the default configuration from BIOS will be used. Function mp_irqdomain_map() is an common implementation of irqdomain map() operation. It figures out attribures for pin and then actually programs the IOAPIC pin. We hope this will be the only entrance for programming IOAPIC pin. And the flow will: 1) caller such as xxx_pci_irq_enable figures out pin attributes. 2) Invoke mp_set_pin_attr() to set attributes for a pin. If the pin has already bin programmed, mp_set_pin_attr() will aslo detects attribute confictions. 3) Invoke mp_map_pin_to_irq() 3.1) If IRQ has already been assigned, return irq_find_mapping() 3.2) Else irq_create_mapping() ->irq_domain_associate() ->mp_irqdomain_map() ->io_apic_setup_irq_pin() So every pin will only programmed once by mp_irqdomain_map(), so we could kill io_apic_setup_irq_pin_once(), io_apic_set_pci_routing() and setup_IO_APIC_irq_extra() etc. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-30-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, devicetree, irq: Use common mechanism to support irqdomainJiang Liu3-140/+59
Now the ioapic driver provides a common interface to create irqdomain, so replace the private implementation. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Tony Lindgren <tony@atomide.com> Link: http://lkml.kernel.org/r/1402302011-23642-29-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, SFI, irq: Provide basic irqdomain supportJiang Liu3-1/+12
Enhance SFI to provide basic support of irqdomain with identity mapping between GSIs and IRQs. Some Intel MID platforms assumes identity mapping between GSI and IRQ, so we can't dynamically allocate IRQ number on demand. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: sfi-devel@simplefirmware.org Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <lenb@kernel.org> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Link: http://lkml.kernel.org/r/1402302011-23642-28-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, mpparse, irq: Provide basic irqdomain supportJiang Liu1-1/+9
Enhance mpparse to provide basic support of irqdomain. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-27-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, ACPI, irq: Provide basic irqdomain supportJiang Liu1-2/+13
Enhance ACPI driver to provide basic irqdomain support for IOAPIC. We will build identity mapping for IOAPICs hosting legacy IRQs, otherwise dynamically allocate IRQ numbers for IOAPIC pins on demand. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Link: http://lkml.kernel.org/r/1402302011-23642-26-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq: Enhance mp_register_ioapic() to support irqdomainJiang Liu6-6/+47
Enhance function mp_register_ioapic() to support irqdomain. When registering IOAPIC, caller may provide callbacks and parameters for creating irqdomain. The IOAPIC core will create irqdomain later if caller has passed in corresponding parameters. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: sfi-devel@simplefirmware.org Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Tony Lindgren <tony@atomide.com> Link: http://lkml.kernel.org/r/1402302011-23642-25-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq: Introduce mechanisms to support dynamically allocate IRQ for IOAPICJiang Liu4-41/+147
Currently x86 support identity mapping between GSI(IOAPIC pin) and IRQ number, so continous IRQs at low end are statically allocated to IOAPICs at boot time. This design causes trouble to support IOAPIC hotplug. This patch implements basic mechanism to dynamically allocate IRQ on demand for IOAPIC pins by using irqdomain framework. It first adds several fields into struct ioapic to support irqdomain. Then it implements an algorithm to dynamically allocate IRQ number for IOAPIC pins on demand. Currently it supports three types of irqdomain: 1) LEGACY: used to support IOAPIC hosting legacy IRQs and building identity mapping for legacy IRQs. A speical case, we dynamically allocate IRQ number for IOAPIC pin which has GSI number below nr_legacy_irqs() but isn't legacy IRQ. This is for backward compatibility and avoid regression. 2) STRICT: build identity mapping between GSI and IRQ nubmer. 3) DYNAMIC: dynamically allocate IRQ number for IOAPIC pin on demand. Legacy(ISA) IRQs is not managed by irqdomain because there may be multiple pins sharing the same IRQ number and current irqdomain only supports 1:1 mapping between pins and IRQ. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Link: http://lkml.kernel.org/r/1402302011-23642-24-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq, ACPI: Change __acpi_register_gsi to return IRQ number instead of GSIJiang Liu1-13/+8
Currently __acpi_register_gsi is defined to return GSI number and may be set to acpi_register_gsi_pic(), acpi_register_gsi_ioapic(), acpi_register_gsi_xen_hvm() and acpi_register_gsi_xen(). Among which, acpi_register_gsi_ioapic() returns GSI number, but acpi_register_gsi_xen_hvm() and acpi_register_gsi_xen() actually returns IRQ number instead of GSI. And for acpi_register_gsi_pic(), GSI number equals to IRQ number. So change acpi_register_gsi_ioapic() to return IRQ number, it also simplifies the code. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Link: http://lkml.kernel.org/r/1402380887-32512-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, ACPI, irq: Consolidate algorithm of mapping (ioapic, pin) to IRQ numberJiang Liu3-36/+38
Currently ACPI and ioapic both implement algorithms to map (ioapic, pin) to IRQ number. So consolidate the common part into one place, which is also preparing for irqdomain support. It introduces mp_map_gsi_to_irq(), which will be used to allocate IRQ number IOAPIC pins when irqdomain is enabled. Also rename gsi_to_irq() to map_gsi_to_irq(), later we will introduce unmap_gsi_to_irq() when enabling IOAPIC hotplug. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Link: http://lkml.kernel.org/r/1402380812-32446-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq: Simplify arch_early_irq_init()Jiang Liu1-22/+11
Simplify function arch_early_irq_init() and kill static array irq_cfgx[]. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-21-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq: Count legacy IRQs by legacy_pic->nr_legacy_irqs instead of ↵Jiang Liu6-36/+51
NR_IRQS_LEGACY Some platforms, such as Intel MID and mshypv, do not support legacy interrupt controllers. So count legacy IRQs by legacy_pic->nr_legacy_irqs instead of hard-coded NR_IRQS_LEGACY. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: xen-devel@lists.xenproject.org Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Tony Lindgren <tony@atomide.com> Acked-by: David Vrabel <david.vrabel@citrix.com> Link: http://lkml.kernel.org/r/1402302011-23642-20-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86: ce4100, irq: Do not set legacy_pic to null_legacy_picJiang Liu1-2/+0
Intel CE4100 platforms has i8259 legacy interrupt controllers, so don't set legacy_pic to null_legacy_pic in late booting stage because we need legacy_pic to mask i8259 pins when enabling IOAPIC pins for safety. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-19-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86: ce4100, irq: Make CE4100 depend on CONFIG_X86_IO_APICJiang Liu2-7/+3
Intel CE4100 platforms need IOAPIC support becasue some devices are always connected to the second IOAPIC, so make CONFIG_CE depends on CONFIG_X86_IO_APIC. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-18-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq: Introduce some helper utilities to improve readabilityJiang Liu2-7/+24
It also fixes an off by one bug in if ((ioapic_idx > 0) && (irq > NR_IRQS_LEGACY)) It should be if ((ioapic_idx > 0) && (irq >= NR_IRQS_LEGACY)) Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-17-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq: Reorganize IO_APIC_get_PCI_irq_vector() to prepare for irqdomainJiang Liu1-28/+33
Reorganize function IO_APIC_get_PCI_irq_vector() a bit to better support coming irqdomain. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-16-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, ioapic: Use irq_cfg() instead of irq_get_chip_data() for better readabilityJiang Liu1-10/+10
Use defined helper function irq_cfg() instead of irq_get_chip_data() for better readability. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-15-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, ioapic: Introduce helper utilities to walk ioapics and pinsJiang Liu1-58/+62
Introduce helper utilities for_each_ioapic(), for_each_ioapic_reverse(), for_each_pin() and for_each_ioapic_pin() to walk ioapics and pins. They will be rewritten e will rewrite later to support IOAPIC hotplug. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-14-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, ioapic: Kill static variable nr_irqs_gsiJiang Liu1-19/+5
Static variable nr_irqs_gsi is used to maintain the lowest dynamic allocatable IRQ number. It may cause trouble when enabling dynamic IRQ allocation for IOAPIC, so use arch_dynirq_lower_bound() to avoid directly accessing nr_irqs_gsi and kill nr_irqs_gsi. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-13-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, ioapic: Kill unused global variable timer_through_8259Jiang Liu2-7/+0
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-12-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, irq, trivial: Minor improvements of IRQ related codeJiang Liu3-28/+12
1) Kill unused MAX_HARDIRQS_PER_CPU. 2) Improve function prototype declararions. 3) Simple typo fix, change "gsit" to "gsi". 4) Use macro VECTOR_UNDEFINED instead of hard-coded -1. 5) Kill redundant comments. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Jiri Kosina <trivial@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-11-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, ACPI, irq: Fix possible eror in GSI to IRQ mapping for legacy IRQJiang Liu1-1/+9
A default identity mapping between GSI and IRQ is built for legacy IRQs. So when overriding the default identity mapping for legacy IRQs, we should also invalidate isa_irq_to_gsi[gsi] when setting isa_irq_to_gsi[irq] = gsi. Otherwise there may be two entries with the same GSI in the isa_irq_to_gsi array, and acpi_isa_irq_to_gsi() may give wrong result. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Link: http://lkml.kernel.org/r/1402302011-23642-10-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, ACPI, irq: Enhance error handling in function acpi_register_gsi()Jiang Liu1-6/+8
Function mp_register_gsi() may return error code when failed to look up or program corresponding IOAPIC pin for GSI, so enhance acpi_register_gsi() to handle possible error cases. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Link: http://lkml.kernel.org/r/1402380683-32345-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, ACPI, trivial: Minor improvements to arch/x86/kernel/acpi/boot.cJiang Liu1-34/+16
1) Remove out-of-date comment 2) Kill unused function acpi_set_irq_model_pic() 3) Use NR_IRQS_LEGACY instead of hard-coded 16 4) Trivial syntax improvements Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Jiri Kosina <trivial@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-8-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, acpi, irq: Kill static function irq_to_gsi()Jiang Liu1-20/+6
Static function irq_to_gsi() is only called by acpi_isa_irq_to_gsi(), so kill function irq_to_gsi() and simplify acpi_isa_irq_to_gsi(). Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Link: http://lkml.kernel.org/r/1402302011-23642-7-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-06-21x86, PCI, ACPI: Use kmalloc_node() to optimize for performanceJiang Liu1-3/+3
Use kmalloc_node() instead of kmalloc() when possible to optimize for performance on NUMA platforms. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1402302011-23642-6-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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