- 22 Jul, 2007 40 commits
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Henrique de Moraes Holschuh authored
The CMOS set of commands is often just used to keep the CMOS NVRAM in sync with whatever the ACPI BIOS has been doing in modern ThinkPads. In older ThinkPads, it actually carried out real actions. Document this. Signed-off-by:
Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by:
Len Brown <len.brown@intel.com>
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Henrique de Moraes Holschuh authored
The change in the size of the hotkey mask, the hability to report the keys that use the higher bits, and the addition of the hotkey_radio_sw attribute are important enough features to warrant increasing the minor field of the sysfs interface version. Also, document a bit better how and when the thinkpad-acpi sysfs interface version will be updated. Signed-off-by:
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Henrique de Moraes Holschuh authored
Some ThinkPad models, notably the T60 and X60, have a slider switch to enable and disable the radios. The switch has the capability of force-disabling the radios in hardware on most models, and it is supposed to affect all radios (WLAN, WWAN, BlueTooth). Export the switch state as a sysfs attribute, on ThinkPads where it is available. Thanks to Henning Schild for asking for this feature, and for tracking down the EC register that holds the radio switch state. Signed-off-by:
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Henrique de Moraes Holschuh authored
The firmware knows how many hot keys it supports, so export this information in a sysfs attribute. And the driver knows which keys are always handled by the firmware in all known ThinkPad models too, so export this information as well in a sysfs attribute. Unless you know which events need to be handled in a passive way, do *not* enable hotkeys that are always handled by the firmware. Signed-off-by:
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Henrique de Moraes Holschuh authored
Revise ACPI HKEY functionality to better interface with the firmware, and enable up to 32 regular hotkeys, instead of just 16 of them. Ouch. This takes care of most keys one used to have to do CMOS NVRAM polling on, and should drop the need for tpb, thinkpad-keys, and other such 5Hz NVRAM polling power vampires on most modern ThinkPads ;-) And, just to add insult to injury, this was sort of working since forever through the procfs interface, but nobody noticed or tried an echo 0xffffffff > /proc/acpi/ibm/hotkey and told me it would generate weird events. ARGH! Thanks to Richard Hughes for kicking off the work that ended up with this discovery, and to Matthew Garret for calling my attention to the fact that newer ThinkPads were indeed generating ACPI GPEs when such hot keys were pressed. Signed-off-by:
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Henrique de Moraes Holschuh authored
Update the documentation with some extra data on the T43 thermal sensor @0xc1, thanks to Alexey Fisher. Signed-off-by:
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Henrique de Moraes Holschuh authored
Remove all initializers to NULL or zero. Signed-off-by:
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Henrique de Moraes Holschuh authored
Add DMI-based aliases to allow module autoloading on select thinkpads. The aliases will do nothing unless the dmi-based-module-autoloading.patch patch from Lennart Poettering <mzxreary@0pointer.de> is applied. Lennart's patch has been accepted by greghk and will be merged eventually. Signed-off-by:
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Muli Ben-Yehuda authored
This patch introduces struct pci_sysdata to x86 and x86-64, and converts the existing two users (NUMA, Calgary) to use it. This lays the groundwork for having other users of sysdata, such as the PCI domains work. The Calgary bits are tested, the NUMA bits just look ok. Signed-off-by:
Jeff Garzik <jeff@garzik.org> Signed-off-by:
Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Joachim Deguara authored
This makes k8topology multicore aware instead of limited to signle- and dual-core CPUs. It uses the CPUID to be more future proof. Signed-off-by:
Joachim Deguara <joachim.deguara@amd.com> Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
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Jan Beulich authored
Leftovers from the removal of the more general (but abandoned) SMP alternatives. Signed-off-by:
Jan Beulich <jbeulich@novell.com> Signed-off-by:
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Robert P. J. Day authored
Signed-off-by:
Robert P. J. Day <rpjday@mindspring.com> Signed-off-by:
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Stefan Richter authored
Dead or misnamed CONFIG_BALANCED_IRQ_DEBUG found by Robert P. J. Day. It's not a Kconfig variable. Since this debug code is ancient, I suggest to get rid of this misleading CONFIG_ macro by deleting all of this debug code. Signed-off-by:
Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "Robert P. J. Day" <rpjday@mindspring.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Aaron Durbin authored
Insert HPET resources after pci probing has been completed in order to avoid resource conflicts with PCI resource reservation. With this change the HPET firmware resources will be identified, but it should also not cause issues when the HPET address falls on a BAR in a PCI device, and the PCI enumeration cannot reserve the resources. Signed-off-by:
Aaron Durbin <adurbin@google.com> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Len Brown <lenb@kernel.org> Signed-off-by:
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Andres Salomon authored
This builds upon the existing geode infrastructure, but adds southbridge support, some GPIO functions, and a header file (asm-i386/geode.h) with some useful GX/LX detection tests. The majority of this code was written by Jordan Crouse. Signed-off-by:
Jordan Crouse <jordan.crouse@amd.com> Signed-off-by:
Andres Salomon <dilinger@debian.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Dan Aloni authored
Signed-off-by:
Dan Aloni <da-x@monatomic.org> Signed-off-by:
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Dan Aloni authored
Users that use kernel log filtering (e.g. via syslogd or a proprietry method) wouldn't like to see warning prints that are not really warnings. Signed-off-by:
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Jeremy Fitzhardinge authored
get_vm_area always returns an area with an adjacent guard page. That guard page is included in vm_struct.size. iounmap uses vm_struct.size to determine how much address space needs to have change_page_attr applied to it, which will BUG if applied to the guard page. This patch adds a helper function - get_vm_area_size() in linux/vmalloc.h - to return the actual size of a vm area, and uses it to make iounmap do the right thing. There are probably other places which should be using get_vm_area_size(). Thanks to Dave Young <hidave.darkstar@gmail.com> for debugging the problem. [ Andi, it wasn't clear to me whether x86_64 needs the same fix. ] Signed-off-by:
Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Dave Young <hidave.darkstar@gmail.com> Cc: Chuck Ebbert <cebbert@redhat.com> Signed-off-by:
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Thomas Gleixner authored
setup_pit_timer is declared in asm-i386/timer.h. Move it to the pit header file, so it can be used by x86_64 as well. Move also the PIT constants. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by:
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Chris Wright authored
I fixed this in x86_64. Looks like the kind of thing that will break voyager on i386. Signed-off-by:
Chris Wright <chrisw@sous-sol.org> Signed-off-by:
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Thomas Gleixner authored
Remove the volatile in apic. We have a cpu_relax() in the wait loop. Fix a coding style issue while at it. Signed-off-by:
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Yinghai Lu authored
[akpm@linux-foundation.org: build fix] Signed-off-by:
Yinghai Lu <yinghai.lu@sun.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by:
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David Rientjes authored
When NUMA emulation succeeds, acpi_numa needs to be set to -1 so that srat_disabled() will always return true. We won't be calling acpi_scan_nodes() or registering the true nodes we've found. [hugh@veritas.com: Fix x86_64 CONFIG_NUMA_EMU build: acpi_numa needs CONFIG_ACPI_NUMA] Signed-off-by:
David Rientjes <rientjes@google.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by:
Hugh Dickins <hugh@veritas.com> Signed-off-by:
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David Rientjes authored
e820_hole_size() now uses the newly extracted helper function, e820_find_active_region(), to determine the size of usable RAM in a range of PFN's. This was previously broken because of two reasons: - The start and end PFN's of each e820 entry were not properly rounded prior to excluding those entries in the range, and - Entries smaller than a page were not properly excluded from being accumulated. This resulted in emulated nodes being incorrectly mapped to ranges that were completely reserved and not candidates for being registered as active ranges. Signed-off-by:
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Yinghai Lu authored
For K8 system: 4G RAM with memory hole remapping enabled, or more than 4G RAM installed. when using kexec to load second kernel. In the second kernel, when mem is allocated for GART, it will do the memset for clear, it will cause restart, because some device still used that for dma. solution will be: in second kernel: disable that at first before we try to allocate mem for it. or in the first kernel: do disable that before shutdown. Andi/Eric/Alan prefer to second one for clean shutdown in first kernel. Andi also point out need to consider to AGP enable but mem less 4G case too. Signed-off-by:
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Robert P. J. Day authored
Signed-off-by:
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Andreas Mohr authored
Add cpu_relax() to cmos_lock() inline function for faster operation on SMT CPUs and less power consumption on others in case of lock contention (which probably doesn't happen too often, so admittedly this patch is not too exciting). [akpm@linux-foundation.org: Include the header file for cpu_relax()] Signed-off-by:
Andreas Mohr <andi@lisas.de> Signed-off-by:
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Andrew Morton authored
mm/vmalloc.c: In function 'unmap_kernel_range': mm/vmalloc.c:75: warning: unused variable 'start' make it a C function so that the compiler thinks it used its arguments. Signed-off-by:
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Yinghai Lu authored
This function is called via dma_ops->.., so change it to static Signed-off-by:
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Yinghai Lu authored
Signed-off-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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Jiri Kosina authored
The function name is set_fixmap(), not fixmap_set() as stated in the comment. Also fix a typo, punctuation and lower/uppercase a bit. Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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Dan Aloni authored
Signed-off-by:
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Alessio Igor Bogani authored
Signed-off-by:
Alessio Igor Bogani <abogani@texware.it> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by:
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Thomas Gleixner authored
Replace the pcspkr private PIT lock by the global PIT lock to serialize the PIT access all over the place. Signed-off-by:
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Will Schmidt authored
During a VM oom condition, kill all threads in the process group. We have had complaints where a threaded application is left in a bad state after one of it's threads is killed when we hit a VM: out_of_memory condition. Killing just one of the process threads can leave the application in a bad state, whereas killing the entire process group would allow for the application to restart, or otherwise handled, and makes it very obvious that something has gone wrong. This change allows the entire process group to be taken down, rather than just the one thread. Signed-off-by:
Will <will_schmidt@vnet.ibm.com> Signed-off-by:
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Glauber de Oliveira Costa authored
Some interrupt entry points are currently defined in i8259.c They probably belong in a header. Right now, their only user is init_IRQ, justifying their declaration in-file. But when virtualization comes in, we may be interested in using that functions in late initializations. Signed-off-by:
Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by:
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Andy Whitcroft authored
We are seeing corruption of the decompressed kernel. It is suspected that this is platform specific as it has yet to be seen on any other x86. Move the kernel to the 16MB boundary. Signed-off-by:
Andy Whitcroft <apw@shadowen.org> Signed-off-by:
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Jesper Juhl authored
Remove unneeded test of task != NULL from arch/i386/kernel/traps.c::dump_trace() At the start of the function we have this test: if (!task) task = current; so further down there's no need to test 'task'. Signed-off-by:Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by:
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William Lee Irwin III authored
PAE is useful for more than supporting more than 4GB RAM. It supports expanded swapspace and NX executable protections. Some users may want NX or expanded swapspace support without the overhead or instability of highmem. For these reasons, the following patch divorces CONFIG_X86_PAE from CONFIG_HIGHMEM64G. Cc: Mark Lord <lkml@rtr.ca> Signed-off-by:
William Irwin <wli@holomorphy.com> Signed-off-by:
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Thomas Gleixner authored
Some systems have a HPET which is not incrementing, which leads to a complete hang. Detect it during HPET setup. Signed-off-by:
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