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2009-03-27ACPICA: New: I/O port protectionBob Moore12-29/+319
Protect certain I/O ports from reads/writes. Provides MS compatibility. New module, hwvalid.c Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27ACPICA: Preserve all PM control reserved and ignored bitsBob Moore2-1/+24
As per the ACPI specification, preserve (read/modify/write) all bits that are defined as either reserved or ignored (PM control control registers only.) Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27ACPICA: Change handling of PM1 Status register ignored bitBob Moore1-16/+11
Ignored bits must be preserved according to the ACPI spec. Usually this means a read/modify/write when writing to the register. However, for status registers, writing a one means clear the event. Writing a zero means preserve the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, and the ACPICA code now simply always writes a zero to the ignored bit. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27ACPICA: Fix AcpiWalkNamespace race condition with table unloadBob Moore11-33/+303
Added a reader/writer locking mechanism to allow multiple concurrent namespace walks (readers), but a dynamic table unload will have exclusive access to the namespace. This fixes a problem where a table unload could delete the portion of the namespace that is currently being examined by a walk. Adds a new file, utlock.c that implements the reader/writer lock mechanism. ACPICA BZ 749. http://www.acpica.org/bugzilla/show_bug.cgi?id=749 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27ACPICA: FADT: Fix extraneous length mismatch warningBob Moore1-1/+2
Incorrect register length mismatch between the 32 and 64 bit registers in some cases. Code was was checking the wrong pointer for non-zero, should be looking at the address within the GAS structure. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27ACPICA: Formatting update - no functional changesBob Moore21-174/+161
Split long lines, update comments. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27ACPICA: Add manifest constants for bit register valuesBob Moore4-13/+22
Add and deploy constants for the PM status/enable/control registers. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller5-60/+19
Conflicts: drivers/net/wimax/i2400m/usb-notif.c
2009-03-26ACPICA: Update table header print functionBob Moore1-7/+11
Cleanup table header output. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Restructure bit register access functionsBob Moore1-115/+62
Update code for acpi_read_bit_register and acpi_write_bit_register. Simplified code path, condensed duplicate code. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Rename ACPI bit register access functionsBob Moore8-42/+43
Rename acpi_get_register and acpi_set_register to clarify the purpose of these functions. New names are acpi_read_bit_register and acpi_write_bit_register. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Optimize ACPI register lockingBob Moore3-40/+29
Removed locking for reads from the ACPI bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is not required when reading the single-bit registers. The acpi_get_register_unlocked function is no longer needed and has been removed. This will improve performance for reads on these registers. ACPICA BZ 760. http://www.acpica.org/bugzilla/show_bug.cgi?id=760 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Formatting update - no functional changesBob Moore8-54/+61
Split some long lines. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Debug output: decrease verbosity of DB_INFO debug levelBob Moore3-4/+4
Removed some of the extraneous debug prints using the DB_INFO level. This should make the DB_INFO more useful. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Debug output: print result of _OSI invocationsBob Moore1-11/+21
Print input strings and the result (supported or not supported) for invocations of the _OSI method. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Conditionally compile acpi_set_firmware_waking_vector64Bob Moore1-1/+4
This function is only needed on 64-bit host operating systems. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Remove ACPI_GET_OBJECT_TYPE macroBob Moore38-194/+158
Remove all instances of this obsolete macro, since it is now a simple reference to ->common.type. There were about 150 invocations of the macro across 41 files. ACPICA BZ 755. http://www.acpica.org/bugzilla/show_bug.cgi?id=755 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Add function to handle PM1 control registersBob Moore4-67/+78
Added acpi_hw_write_pm1_control. This function writes both of the PM1 control registers (A/B). These registers are different than than the PM1 A/B status and enable registers in that different values can be written to the A/B registers. Most notably, the SLP_TYP bits can be different, as per the values returned from the _Sx predefined methods. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Remove redundant ACPI_BITREG_SLEEP_TYPE_BBob Moore3-10/+7
This type is the same as TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to simply SLEEP_TYPE. ACPICA BZ 754. http://www.acpica.org/bugzilla/show_bug.cgi?id=754 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Fix parameter validation for acpi_read/writeBob Moore1-10/+8
Now return AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if the register has an address of zero. Previously, these cases simply returned AE_OK. For optional registers such as PM1B status/enable/control, the caller should check for a valid register address before calling. ACPICA BZ 748. http://www.acpica.org/bugzilla/show_bug.cgi?id=748 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: For PM1B registers, do not shift value read or writtenBob Moore1-9/+24
The PM1B registers are mirrors of the PM1A registers with different bits actually implemented. From the ACPI specification: "Although the bits can be split between the two register blocks (each register block has a unique pointer within the FADT), the bit positions are maintained. The register block with unimplemented bits (that is, those implemented in the other register block) always returns zeros, and writes have no side effects" Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Remove extra write for acpi_hw_clear_acpi_statusBob Moore1-14/+3
This function was writing an optional PM1B status register twice. The existing call to the low-level acpi_hw_register_write automatically handles a possibly split PM1 A/B register. ACPICA BZ 751. http://www.acpica.org/bugzilla/show_bug.cgi?id=751 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Fix writes to optional PM1B registersBob Moore1-65/+140
On read, shift B register bits above the A bits. On write, shift B bits down to zero before writing the B register. New: acpi_hw_read_multiple, acpi_hw_write_multiple. These two functions now transparently handle the (possible) split registers for PM1 Status, Enable, and Control. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Update comments in module headerBob Moore1-19/+22
Enhance the explanations of the various package return types for clarity. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Check for non-zero address before being converted to GASLin Ming1-7/+9
Reported-by: FreeBSD community Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Split out PM1 status registers from the FADTBob Moore3-122/+147
Add new globals for the PM1 status registers (A/B), similar to the way the PM1 enable registers are handled. Instead of overloading the FADT Event Register blocks. This makes the code clearer and less prone to error. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Add override for dynamic tablesBob Moore1-1/+27
Add a call to acpi_os_table_override during the installation of a dynamic table (loaded via the Load or LoadTable AML operators). Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Remove extraneous parameter in table managerBob Moore4-17/+14
Removed the Flags parameter from several internal functions since it was not being used. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Allow OS override of all ACPI tablesBob Moore3-44/+47
Previously, the table override mechanism was implemented for the DSDT only. Now, any table in the RSDT/XSDT can be replaced by the host OS. (including the DSDT). Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26ACPICA: Add error check to debug object dump routineBob Moore1-0/+6
Add check for invalid handle in acpi_ns_dump_one_object. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-25Driver core: implement uevent suppress in kobjectMing Lei1-1/+1
This patch implements uevent suppress in kobject and removes it from struct device, based on the following ideas: 1,Uevent sending should be one attribute of kobject, so suppressing it in kobject layer is more natural than in device layer. By this way, we can do it for other objects embedded with kobject. 2,It may save several bytes for each instance of struct device.(On my omap3(32bit ARM) based box, can save 8bytes per device object) This patch also introduces dev_set|get_uevent_suppress() helpers to set and query uevent_suppress attribute in case to help kobject as private part of struct device in future. [This version is against the latest driver-core patch set of Greg,please ignore the last version.] Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-20PCI/ACPI: rename pci_osc_control_set()Kenji Kaneshige1-3/+3
- Rename pci_osc_control_set() to acpi_pci_osc_control_set() according to the other API names in drivers/acpi/pci_root.c. - Move _OSC related definitions to include/linux/acpi.h because _OSC related API is implemented in drivers/acpi/pci_root.c now. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Tested-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-20PCI/ACPI: move _OSC code to pci_root.cKenji Kaneshige1-2/+178
Move PCI _OSC management code from drivers/pci/pci-acpi.c to drivers/acpi/pci_root.c. The benefits are - We no longer need struct osc_data and its management code (contents are moved to struct acpi_pci_root). This simplify the code, and we no longer care about kmalloc() failure. - We can make pci_acpi_osc_support() be a static function, which is called only from drivers/acpi/pci_root.c. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Tested-by: Andrew Patterson <andrew.patterson@hp.com> Acked-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-17ACPI: move private declarations to internal.hBjorn Helgaas5-0/+32
A number of things that shouldn't be exposed outside the ACPI core were declared in include/acpi/acpi_drivers.h, where anybody can see them. This patch moves those declarations to a new "internal.h" inside drivers/acpi. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17ACPI: update Kconfig help texts (no functional changes)Bjorn Helgaas1-64/+86
Use "help" (not "---help---") consistently throughout. ACPI can't be a module, so if both ACPI & APM are configured, we use ACPI. Update pointers to ACPI CA and Linux ACPI projects. Replace "Compaq" with "Hewlett-Packard" in the spec developer list. Fix typo in /sys/module path. The user-space daemon is "acpid", not "acpi". Add standard "To compile this driver as a module ..." help text. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17ACPI: PCI: use generic pci_swizzle_interrupt_pin()Bjorn Helgaas1-1/+1
Use the generic pci_swizzle_interrupt_pin() instead of ACPI-specific code. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17ACPI: pci_link: simplify list of link devicesBjorn Helgaas1-26/+6
We don't need a struct containing a count and a list_head; a simple list_head is sufficient. The list iterators handle empty lists fine. Furthermore, we don't need to check for null list entries because we only add non-null entries. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17ACPI: pci_link: remove unnecessary null pointer checksBjorn Helgaas1-13/+1
Better to oops and learn about a bug than to silently cover it up. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17ACPI: pci_link: remove unnecessary casts and initializationsBjorn Helgaas1-19/+19
Remove unnecessary casts and initializations. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17ACPI: pci_link: clean up whitespaceBjorn Helgaas1-46/+27
This patch makes whitespace and indentation more consistent. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17acpi: fix of pmtimer overflow that make Cx states time incorrectalex.shi1-36/+27
We found Cx states time abnormal in our some of machines which have 16 LCPUs, the C0 take too many time while system is really idle when kernel enabled tickless and highres. powertop output is below: PowerTOP version 1.9 (C) 2007 Intel Corporation Cn Avg residency P-states (frequencies) C0 (cpu running) (40.5%) 2.53 Ghz 0.0% C1 0.0ms ( 0.0%) 2.53 Ghz 0.0% C2 128.8ms (59.5%) 2.40 Ghz 0.0% 1.60 Ghz 100.0% Wakeups-from-idle per second : 4.7 interval: 20.0s no ACPI power usage estimate available Top causes for wakeups: 41.4% ( 24.9) <interrupt> : extra timer interrupt 20.2% ( 12.2) <kernel core> : usb_hcd_poll_rh_status (rh_timer_func) After tacking detailed for this issue, Yakui and I find it is due to 24 bit PM timer overflows when some of cpu sleep more than 4 seconds. With tickless kernel, the CPU want to sleep as much as possible when system idle. But the Cx sleep time are recorded by pmtimer which length is determined by BIOS. The current Cx time was gotten in the following function from driver/acpi/processor_idle.c: static inline u32 ticks_elapsed(u32 t1, u32 t2) { if (t2 >= t1) return (t2 - t1); else if (!(acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER)) return (((0x00FFFFFF - t1) + t2) & 0x00FFFFFF); else return ((0xFFFFFFFF - t1) + t2); } If pmtimer is 24 bits and it take 5 seconds from t1 to t2, in above function, just about 1 seconds ticks was recorded. So the Cx time will be reduced about 4 seconds. and this is why we see above powertop output. To resolve this problem, Yakui and I use ktime_get() to record the Cx states time instead of PM timer as the following patch. the patch was tested with i386/x86_64 modes on several platforms. Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Tested-by: Alex Shi <alex.shi@intel.com> Signed-off-by: Alex Shi <alex.shi@intel.com> Signed-off-by: Yakui.zhao <yakui.zhao@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-16acpi: check for pxm_to_node_map overflowCyrill Gorcunov1-1/+1
It is hardly (if ever) possible but in case of broken _PXM entry we could reach out of pxm_to_node_map array bounds in acpi_map_pxm_to_node() call. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-16ACPI: remove doubled status checkingJiri Slaby1-8/+1
There was a misplaced status test (two consequent tests without a statement in between) in acpi_bus_init for ages. Remove it, since the function which should be checked (acpi_os_initialize1) has BUG_ONs on failure paths. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-16ACPI suspend: Blacklist Toshiba Satellite L300 that requires to set SCI_EN ↵Zhang Rui1-0/+8
directly on resume This is a supplement of commit 65df78473ffbf3bff5e2034df1638acc4f3ddd50. http://bugzilla.kernel.org/show_bug.cgi?id=12798 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-16Revert "ACPI: make some IO ports off-limits to AML"Len Brown1-50/+0
This reverts commit 5ec5d38a1c8af255ffc481c81eef13e9155524b3. because it caused spurious dmesg warmings. We'll implement the check for off-limit ports in a more clever way in the future. http://bugzilla.kernel.org/show_bug.cgi?id=12758 Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-16suspend: switch the Asus Pundit P1-AH2 to old ACPI sleep orderingAndy Whitcroft1-0/+8
Switch the Asus Pundit P1-AH2 (M2N8L motherboard) to the old ACPI 1.0 sleep ordering by default. Without this it will not suspend/resume correctly. Signed-off-by: Andy Whitcroft <apw@canonical.com> Tested-by: Dustin Kirkland <kirkland@canonical.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-26ACPI: introduce sysfs I/F for dynamic tablesZhang Rui1-3/+48
SSDT tables may be loaded at runtime. create sysfs I/F for these dynamic tables in /sys/firmware/acpi/tables/dynamic/. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-24Merge branch 'tj-percpu' of ↵Ingo Molnar1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc into core/percpu Conflicts: arch/x86/include/asm/pgtable.h
2009-02-24Merge branches 'x86/acpi', 'x86/apic', 'x86/asm', 'x86/cleanups', 'x86/mm', ↵Ingo Molnar4-9/+34
'x86/signal' and 'x86/urgent'; commit 'v2.6.29-rc6' into x86/core
2009-02-24Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller4-9/+34
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-30 08:47:10 +0300