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path: root/arch/x86/include/asm/acpi.h
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2010-10-22xen: add xen hvm acpi_register_gsi variantJeremy Fitzhardinge
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
2010-08-02x86: Fix keeping track of AMD C1EMichal Schmidt
Accomodate the original C1E-aware idle routine to the different times during boot when the BIOS enables C1E. While at it, remove the synthetic CPUID flag in favor of a single global setting which denotes C1E status on the system. [ hpa: changed c1e_enabled to be a bool; clarified cpu bit 3:21 comment ] Signed-off-by: Michal Schmidt <mschmidt@redhat.com> LKML-Reference: <20100727165335.GA11630@aftab> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Acked-by: Thomas Gleixner <tglx@linutronix.de>
2010-03-14ACPI: delete the "acpi=ht" boot optionLen Brown
acpi=ht was important in 2003 -- before ACPI was universally deployed and enabled by default in the major Linux distributions. At that time, there were a fair number of people who or chose to, or needed to, run with acpi=off, yet also wanted access to Hyper-threading. Today we find that many invocations of "acpi=ht" are accidental, and thus is it possible that it is doing more harm than good. In 2.6.34, we warn on invocation of acpi=ht. In 2.6.35, we delete the boot option. Signed-off-by: Len Brown <len.brown@intel.com>
2009-12-22ACPI: processor: finish unifying arch_acpi_processor_init_pdc()Alex Chiang
The only thing arch-specific about calling _PDC is what bits get set in the input obj_list buffer. There's no need for several levels of indirection to twiddle those bits. Additionally, since we're just messing around with a buffer, we can simplify the interface; no need to pass around the entire struct acpi_processor * just to get at the buffer. Cc: Tony Luck <tony.luck@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-12-22ACPI: processor: introduce arch_has_acpi_pdcAlex Chiang
arch dependent helper function that tells us if we should attempt to evaluate _PDC on this machine or not. The x86 implementation assumes that the CPUs in the machine must be homogeneous, and that you cannot mix CPUs of different vendors. Cc: Tony Luck <tony.luck@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-11x86: Make sure wakeup trampoline code is below 1MBYinghai Lu
Instead of using bootmem, try find_e820_area()/reserve_early(), and call acpi_reserve_memory() early, to allocate the wakeup trampoline code area below 1M. This is more reliable, and it also removes a dependency on bootmem. -v2: change function name to acpi_reserve_wakeup_memory(), as suggested by Rafael. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: H. Peter Anvin <hpa@zytor.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: pm list <linux-pm@lists.linux-foundation.org> Cc: Len Brown <lenb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <4AFA210B.3020207@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-12x86: Export srat physical topologyDavid Rientjes
This is the counterpart to "x86: export k8 physical topology" for SRAT. It is not as invasive because the acpi code already seperates node setup into detection and registration steps, with the exception of registering e820 active regions in acpi_numa_memory_affinity_init(). This is now moved to acpi_scan_nodes() if NUMA emulation is disabled or deferred. acpi_numa_init() now returns a value which specifies whether an underlying SRAT was located. If so, that topology can be used by the emulation code to interleave emulated nodes over physical nodes or to register the nodes for ACPI. acpi_get_nodes() may now be used to export the srat physical topology of the machine for NUMA emulation. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Ankita Garg <ankita@in.ibm.com> Cc: Len Brown <len.brown@intel.com> LKML-Reference: <alpine.DEB.1.00.0909251518580.14754@chino.kir.corp.google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-08-28ACPI: Handle CONFIG_ACPI=n better from linux/acpi.hFeng Tang
linux/acpi.h is the top level header for interfacing with the ACPI sub-system, so acpi_disabled should be up there instead of down in asm/acpi.h -- particularly since asm/acpi.h doesn't exist for all architectures. Same story for acpi_table_parse(), which is a top-level API to Linux/ACPI. This is necessary for building some code that used to always depend on CONFIG_ACPI=y, but will soon also need to build with CONFIG_ACPI=n. Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-06-12ACPI: #define acpi_disabled 1 for CONFIG_ACPI=nLen Brown
SFI will need to test acpi_disabled no matter the value of CONFIG_ACPI. Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-09x86: use early_ioremap in __acpi_map_tableJeremy Fitzhardinge
__acpi_map_table() effectively reimplements early_ioremap(). Rather than have that duplication, just implement it in terms of early_ioremap(). However, unlike early_ioremap(), __acpi_map_table() just maintains a single mapping which gets replaced each call, and has no corresponding unmap function. Implement this by just removing the previous mapping each time its called. Unfortunately, this will leave a stray mapping at the end. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-11ACPI: pci_link: remove acpi_irq_balance_set() interfaceBjorn Helgaas
This removes the acpi_irq_balance_set() interface from the PCI interrupt link driver. x86 used acpi_irq_balance_set() to tell the PCI interrupt link driver to configure links to minimize IRQ sharing. But the link driver can easily figure out whether to turn on IRQ balancing based on the IRQ model (PIC/IOAPIC/etc), so we can get rid of that external interface. It's better for the driver to figure this out at init-time. If we set it externally via the x86 code, the interface reduces modularity, and we depend on the fact that acpi_process_madt() happens before we process the kernel command line. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-22x86: Fix ASM_X86__ header guardsH. Peter Anvin
Change header guards named "ASM_X86__*" to "_ASM_X86_*" since: a. the double underscore is ugly and pointless. b. no leading underscore violates namespace constraints. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-22x86, um: ... and asm-x86 moveAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>