--- /dev/null
+What: /sys/bus/acpi/devices/.../path
+Date: December 2006
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute indicates the full path of ACPI namespace
+ object associated with the device object. For example,
+ \_SB_.PCI0.
+ This file is not present for device objects representing
+ fixed ACPI hardware features (like power and sleep
+ buttons).
+
+What: /sys/bus/acpi/devices/.../modalias
+Date: July 2007
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute indicates the PNP IDs of the device object.
+ That is acpi:HHHHHHHH:[CCCCCCC:]. Where each HHHHHHHH or
+ CCCCCCCC contains device object's PNPID (_HID or _CID).
+
+What: /sys/bus/acpi/devices/.../hid
+Date: April 2005
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute indicates the hardware ID (_HID) of the
+ device object. For example, PNP0103.
+ This file is present for device objects having the _HID
+ control method.
+
+What: /sys/bus/acpi/devices/.../description
+Date: October 2012
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute contains the output of the device object's
+ _STR control method, if present.
+
+What: /sys/bus/acpi/devices/.../adr
+Date: October 2012
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute contains the output of the device object's
+ _ADR control method, which is present for ACPI device
+ objects representing devices having standard enumeration
+ algorithms, such as PCI.
+
+What: /sys/bus/acpi/devices/.../uid
+Date: October 2012
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute contains the output of the device object's
+ _UID control method, if present.
+
+What: /sys/bus/acpi/devices/.../eject
+Date: December 2006
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ Writing 1 to this attribute will trigger hot removal of
+ this device object. This file exists for every device
+ object that has _EJ0 method.
Description:
The /sys/class/devfreq/.../available_governors shows
currently available governors in the system.
+
+What: /sys/class/devfreq/.../min_freq
+Date: January 2013
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../min_freq shows and stores
+ the minimum frequency requested by users. It is 0 if
+ the user does not care. min_freq overrides the
+ frequency requested by governors.
+
+What: /sys/class/devfreq/.../max_freq
+Date: January 2013
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../max_freq shows and stores
+ the maximum frequency requested by users. It is 0 if
+ the user does not care. max_freq overrides the
+ frequency requested by governors and min_freq.
+ The max_freq overrides min_freq because max_freq may be
+ used to throttle devices to avoid overheating.
--- /dev/null
+What: /sys/devices/.../online
+Date: April 2013
+Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Description:
+ The /sys/devices/.../online attribute is only present for
+ devices whose bus types provide .online() and .offline()
+ callbacks. The number read from it (0 or 1) reflects the value
+ of the device's 'offline' field. If that number is 1 and '0'
+ (or 'n', or 'N') is written to this file, the device bus type's
+ .offline() callback is executed for the device and (if
+ successful) its 'offline' field is updated accordingly. In
+ turn, if that number is 0 and '1' (or 'y', or 'Y') is written to
+ this file, the device bus type's .online() callback is executed
+ for the device and (if successful) its 'offline' field is
+ updated as appropriate.
+
+ After a successful execution of the bus type's .offline()
+ callback the device cannot be used for any purpose until either
+ it is removed (i.e. device_del() is called for it), or its bus
+ type's .online() is exeucted successfully.
-Whatt: /sys/devices/.../sun
+What: /sys/devices/.../sun
Date: October 2012
Contact: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Description:
or 0 (unset). Attempts to write any other values to it will
cause -EINVAL to be returned.
+What: /sys/firmware/acpi/hotplug/force_remove
+Date: May 2013
+Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Description:
+ The number in this file (0 or 1) determines whether (1) or not
+ (0) the ACPI subsystem will allow devices to be hot-removed even
+ if they cannot be put offline gracefully (from the kernel's
+ viewpoint). That number can be changed by writing a boolean
+ value to this file.
+
What: /sys/firmware/acpi/interrupts/
Date: February 2008
Contact: Len Brown <lenb@kernel.org>
--- /dev/null
+ACPI Device Tree - Representation of ACPI Namespace
+
+Copyright (C) 2013, Intel Corporation
+Author: Lv Zheng <lv.zheng@intel.com>
+
+
+Abstract:
+
+The Linux ACPI subsystem converts ACPI namespace objects into a Linux
+device tree under the /sys/devices/LNXSYSTEM:00 and updates it upon
+receiving ACPI hotplug notification events. For each device object in this
+hierarchy there is a corresponding symbolic link in the
+/sys/bus/acpi/devices.
+This document illustrates the structure of the ACPI device tree.
+
+
+Credit:
+
+Thanks for the help from Zhang Rui <rui.zhang@intel.com> and Rafael J.
+Wysocki <rafael.j.wysocki@intel.com>.
+
+
+1. ACPI Definition Blocks
+
+ The ACPI firmware sets up RSDP (Root System Description Pointer) in the
+ system memory address space pointing to the XSDT (Extended System
+ Description Table). The XSDT always points to the FADT (Fixed ACPI
+ Description Table) using its first entry, the data within the FADT
+ includes various fixed-length entries that describe fixed ACPI features
+ of the hardware. The FADT contains a pointer to the DSDT
+ (Differentiated System Descripition Table). The XSDT also contains
+ entries pointing to possibly multiple SSDTs (Secondary System
+ Description Table).
+
+ The DSDT and SSDT data is organized in data structures called definition
+ blocks that contain definitions of various objects, including ACPI
+ control methods, encoded in AML (ACPI Machine Language). The data block
+ of the DSDT along with the contents of SSDTs represents a hierarchical
+ data structure called the ACPI namespace whose topology reflects the
+ structure of the underlying hardware platform.
+
+ The relationships between ACPI System Definition Tables described above
+ are illustrated in the following diagram.
+
+ +---------+ +-------+ +--------+ +------------------------+
+ | RSDP | +->| XSDT | +->| FADT | | +-------------------+ |
+ +---------+ | +-------+ | +--------+ +-|->| DSDT | |
+ | Pointer | | | Entry |-+ | ...... | | | +-------------------+ |
+ +---------+ | +-------+ | X_DSDT |--+ | | Definition Blocks | |
+ | Pointer |-+ | ..... | | ...... | | +-------------------+ |
+ +---------+ +-------+ +--------+ | +-------------------+ |
+ | Entry |------------------|->| SSDT | |
+ +- - - -+ | +-------------------| |
+ | Entry | - - - - - - - -+ | | Definition Blocks | |
+ +- - - -+ | | +-------------------+ |
+ | | +- - - - - - - - - -+ |
+ +-|->| SSDT | |
+ | +-------------------+ |
+ | | Definition Blocks | |
+ | +- - - - - - - - - -+ |
+ +------------------------+
+ |
+ OSPM Loading |
+ \|/
+ +----------------+
+ | ACPI Namespace |
+ +----------------+
+
+ Figure 1. ACPI Definition Blocks
+
+ NOTE: RSDP can also contain a pointer to the RSDT (Root System
+ Description Table). Platforms provide RSDT to enable
+ compatibility with ACPI 1.0 operating systems. The OS is expected
+ to use XSDT, if present.
+
+
+2. Example ACPI Namespace
+
+ All definition blocks are loaded into a single namespace. The namespace
+ is a hierarchy of objects identified by names and paths.
+ The following naming conventions apply to object names in the ACPI
+ namespace:
+ 1. All names are 32 bits long.
+ 2. The first byte of a name must be one of 'A' - 'Z', '_'.
+ 3. Each of the remaining bytes of a name must be one of 'A' - 'Z', '0'
+ - '9', '_'.
+ 4. Names starting with '_' are reserved by the ACPI specification.
+ 5. The '\' symbol represents the root of the namespace (i.e. names
+ prepended with '\' are relative to the namespace root).
+ 6. The '^' symbol represents the parent of the current namespace node
+ (i.e. names prepended with '^' are relative to the parent of the
+ current namespace node).
+
+ The figure below shows an example ACPI namespace.
+
+ +------+
+ | \ | Root
+ +------+
+ |
+ | +------+
+ +-| _PR | Scope(_PR): the processor namespace
+ | +------+
+ | |
+ | | +------+
+ | +-| CPU0 | Processor(CPU0): the first processor
+ | +------+
+ |
+ | +------+
+ +-| _SB | Scope(_SB): the system bus namespace
+ | +------+
+ | |
+ | | +------+
+ | +-| LID0 | Device(LID0); the lid device
+ | | +------+
+ | | |
+ | | | +------+
+ | | +-| _HID | Name(_HID, "PNP0C0D"): the hardware ID
+ | | | +------+
+ | | |
+ | | | +------+
+ | | +-| _STA | Method(_STA): the status control method
+ | | +------+
+ | |
+ | | +------+
+ | +-| PCI0 | Device(PCI0); the PCI root bridge
+ | +------+
+ | |
+ | | +------+
+ | +-| _HID | Name(_HID, "PNP0A08"): the hardware ID
+ | | +------+
+ | |
+ | | +------+
+ | +-| _CID | Name(_CID, "PNP0A03"): the compatible ID
+ | | +------+
+ | |
+ | | +------+
+ | +-| RP03 | Scope(RP03): the PCI0 power scope
+ | | +------+
+ | | |
+ | | | +------+
+ | | +-| PXP3 | PowerResource(PXP3): the PCI0 power resource
+ | | +------+
+ | |
+ | | +------+
+ | +-| GFX0 | Device(GFX0): the graphics adapter
+ | +------+
+ | |
+ | | +------+
+ | +-| _ADR | Name(_ADR, 0x00020000): the PCI bus address
+ | | +------+
+ | |
+ | | +------+
+ | +-| DD01 | Device(DD01): the LCD output device
+ | +------+
+ | |
+ | | +------+
+ | +-| _BCL | Method(_BCL): the backlight control method
+ | +------+
+ |
+ | +------+
+ +-| _TZ | Scope(_TZ): the thermal zone namespace
+ | +------+
+ | |
+ | | +------+
+ | +-| FN00 | PowerResource(FN00): the FAN0 power resource
+ | | +------+
+ | |
+ | | +------+
+ | +-| FAN0 | Device(FAN0): the FAN0 cooling device
+ | | +------+
+ | | |
+ | | | +------+
+ | | +-| _HID | Name(_HID, "PNP0A0B"): the hardware ID
+ | | +------+
+ | |
+ | | +------+
+ | +-| TZ00 | ThermalZone(TZ00); the FAN thermal zone
+ | +------+
+ |
+ | +------+
+ +-| _GPE | Scope(_GPE): the GPE namespace
+ +------+
+
+ Figure 2. Example ACPI Namespace
+
+
+3. Linux ACPI Device Objects
+
+ The Linux kernel's core ACPI subsystem creates struct acpi_device
+ objects for ACPI namespace objects representing devices, power resources
+ processors, thermal zones. Those objects are exported to user space via
+ sysfs as directories in the subtree under /sys/devices/LNXSYSTM:00. The
+ format of their names is <bus_id:instance>, where 'bus_id' refers to the
+ ACPI namespace representation of the given object and 'instance' is used
+ for distinguishing different object of the same 'bus_id' (it is
+ two-digit decimal representation of an unsigned integer).
+
+ The value of 'bus_id' depends on the type of the object whose name it is
+ part of as listed in the table below.
+
+ +---+-----------------+-------+----------+
+ | | Object/Feature | Table | bus_id |
+ +---+-----------------+-------+----------+
+ | N | Root | xSDT | LNXSYSTM |
+ +---+-----------------+-------+----------+
+ | N | Device | xSDT | _HID |
+ +---+-----------------+-------+----------+
+ | N | Processor | xSDT | LNXCPU |
+ +---+-----------------+-------+----------+
+ | N | ThermalZone | xSDT | LNXTHERM |
+ +---+-----------------+-------+----------+
+ | N | PowerResource | xSDT | LNXPOWER |
+ +---+-----------------+-------+----------+
+ | N | Other Devices | xSDT | device |
+ +---+-----------------+-------+----------+
+ | F | PWR_BUTTON | FADT | LNXPWRBN |
+ +---+-----------------+-------+----------+
+ | F | SLP_BUTTON | FADT | LNXSLPBN |
+ +---+-----------------+-------+----------+
+ | M | Video Extension | xSDT | LNXVIDEO |
+ +---+-----------------+-------+----------+
+ | M | ATA Controller | xSDT | LNXIOBAY |
+ +---+-----------------+-------+----------+
+ | M | Docking Station | xSDT | LNXDOCK |
+ +---+-----------------+-------+----------+
+
+ Table 1. ACPI Namespace Objects Mapping
+
+ The following rules apply when creating struct acpi_device objects on
+ the basis of the contents of ACPI System Description Tables (as
+ indicated by the letter in the first column and the notation in the
+ second column of the table above):
+ N:
+ The object's source is an ACPI namespace node (as indicated by the
+ named object's type in the second column). In that case the object's
+ directory in sysfs will contain the 'path' attribute whose value is
+ the full path to the node from the namespace root.
+ struct acpi_device objects are created for the ACPI namespace nodes
+ whose _STA control methods return PRESENT or FUNCTIONING. The power
+ resource nodes or nodes without _STA are assumed to be both PRESENT
+ and FUNCTIONING.
+ F:
+ The struct acpi_device object is created for a fixed hardware
+ feature (as indicated by the fixed feature flag's name in the second
+ column), so its sysfs directory will not contain the 'path'
+ attribute.
+ M:
+ The struct acpi_device object is created for an ACPI namespace node
+ with specific control methods (as indicated by the ACPI defined
+ device's type in the second column). The 'path' attribute containing
+ its namespace path will be present in its sysfs directory. For
+ example, if the _BCL method is present for an ACPI namespace node, a
+ struct acpi_device object with LNXVIDEO 'bus_id' will be created for
+ it.
+
+ The third column of the above table indicates which ACPI System
+ Description Tables contain information used for the creation of the
+ struct acpi_device objects represented by the given row (xSDT means DSDT
+ or SSDT).
+
+ The forth column of the above table indicates the 'bus_id' generation
+ rule of the struct acpi_device object:
+ _HID:
+ _HID in the last column of the table means that the object's bus_id
+ is derived from the _HID/_CID identification objects present under
+ the corresponding ACPI namespace node. The object's sysfs directory
+ will then contain the 'hid' and 'modalias' attributes that can be
+ used to retrieve the _HID and _CIDs of that object.
+ LNXxxxxx:
+ The 'modalias' attribute is also present for struct acpi_device
+ objects having bus_id of the "LNXxxxxx" form (pseudo devices), in
+ which cases it contains the bus_id string itself.
+ device:
+ 'device' in the last column of the table indicates that the object's
+ bus_id cannot be determined from _HID/_CID of the corresponding
+ ACPI namespace node, although that object represents a device (for
+ example, it may be a PCI device with _ADR defined and without _HID
+ or _CID). In that case the string 'device' will be used as the
+ object's bus_id.
+
+
+4. Linux ACPI Physical Device Glue
+
+ ACPI device (i.e. struct acpi_device) objects may be linked to other
+ objects in the Linux' device hierarchy that represent "physical" devices
+ (for example, devices on the PCI bus). If that happens, it means that
+ the ACPI device object is a "companion" of a device otherwise
+ represented in a different way and is used (1) to provide configuration
+ information on that device which cannot be obtained by other means and
+ (2) to do specific things to the device with the help of its ACPI
+ control methods. One ACPI device object may be linked this way to
+ multiple "physical" devices.
+
+ If an ACPI device object is linked to a "physical" device, its sysfs
+ directory contains the "physical_node" symbolic link to the sysfs
+ directory of the target device object. In turn, the target device's
+ sysfs directory will then contain the "firmware_node" symbolic link to
+ the sysfs directory of the companion ACPI device object.
+ The linking mechanism relies on device identification provided by the
+ ACPI namespace. For example, if there's an ACPI namespace object
+ representing a PCI device (i.e. a device object under an ACPI namespace
+ object representing a PCI bridge) whose _ADR returns 0x00020000 and the
+ bus number of the parent PCI bridge is 0, the sysfs directory
+ representing the struct acpi_device object created for that ACPI
+ namespace object will contain the 'physical_node' symbolic link to the
+ /sys/devices/pci0000:00/0000:00:02:0/ sysfs directory of the
+ corresponding PCI device.
+
+ The linking mechanism is generally bus-specific. The core of its
+ implementation is located in the drivers/acpi/glue.c file, but there are
+ complementary parts depending on the bus types in question located
+ elsewhere. For example, the PCI-specific part of it is located in
+ drivers/pci/pci-acpi.c.
+
+
+5. Example Linux ACPI Device Tree
+
+ The sysfs hierarchy of struct acpi_device objects corresponding to the
+ example ACPI namespace illustrated in Figure 2 with the addition of
+ fixed PWR_BUTTON/SLP_BUTTON devices is shown below.
+
+ +--------------+---+-----------------+
+ | LNXSYSTEM:00 | \ | acpi:LNXSYSTEM: |
+ +--------------+---+-----------------+
+ |
+ | +-------------+-----+----------------+
+ +-| LNXPWRBN:00 | N/A | acpi:LNXPWRBN: |
+ | +-------------+-----+----------------+
+ |
+ | +-------------+-----+----------------+
+ +-| LNXSLPBN:00 | N/A | acpi:LNXSLPBN: |
+ | +-------------+-----+----------------+
+ |
+ | +-----------+------------+--------------+
+ +-| LNXCPU:00 | \_PR_.CPU0 | acpi:LNXCPU: |
+ | +-----------+------------+--------------+
+ |
+ | +-------------+-------+----------------+
+ +-| LNXSYBUS:00 | \_SB_ | acpi:LNXSYBUS: |
+ | +-------------+-------+----------------+
+ | |
+ | | +- - - - - - - +- - - - - - +- - - - - - - -+
+ | +-| * PNP0C0D:00 | \_SB_.LID0 | acpi:PNP0C0D: |
+ | | +- - - - - - - +- - - - - - +- - - - - - - -+
+ | |
+ | | +------------+------------+-----------------------+
+ | +-| PNP0A08:00 | \_SB_.PCI0 | acpi:PNP0A08:PNP0A03: |
+ | +------------+------------+-----------------------+
+ | |
+ | | +-----------+-----------------+-----+
+ | +-| device:00 | \_SB_.PCI0.RP03 | N/A |
+ | | +-----------+-----------------+-----+
+ | | |
+ | | | +-------------+----------------------+----------------+
+ | | +-| LNXPOWER:00 | \_SB_.PCI0.RP03.PXP3 | acpi:LNXPOWER: |
+ | | +-------------+----------------------+----------------+
+ | |
+ | | +-------------+-----------------+----------------+
+ | +-| LNXVIDEO:00 | \_SB_.PCI0.GFX0 | acpi:LNXVIDEO: |
+ | +-------------+-----------------+----------------+
+ | |
+ | | +-----------+-----------------+-----+
+ | +-| device:01 | \_SB_.PCI0.DD01 | N/A |
+ | +-----------+-----------------+-----+
+ |
+ | +-------------+-------+----------------+
+ +-| LNXSYBUS:01 | \_TZ_ | acpi:LNXSYBUS: |
+ +-------------+-------+----------------+
+ |
+ | +-------------+------------+----------------+
+ +-| LNXPOWER:0a | \_TZ_.FN00 | acpi:LNXPOWER: |
+ | +-------------+------------+----------------+
+ |
+ | +------------+------------+---------------+
+ +-| PNP0C0B:00 | \_TZ_.FAN0 | acpi:PNP0C0B: |
+ | +------------+------------+---------------+
+ |
+ | +-------------+------------+----------------+
+ +-| LNXTHERM:00 | \_TZ_.TZ00 | acpi:LNXTHERM: |
+ +-------------+------------+----------------+
+
+ Figure 3. Example Linux ACPI Device Tree
+
+ NOTE: Each node is represented as "object/path/modalias", where:
+ 1. 'object' is the name of the object's directory in sysfs.
+ 2. 'path' is the ACPI namespace path of the corresponding
+ ACPI namespace object, as returned by the object's 'path'
+ sysfs attribute.
+ 3. 'modalias' is the value of the object's 'modalias' sysfs
+ attribute (as described earlier in this document).
+ NOTE: N/A indicates the device object does not have the 'path' or the
+ 'modalias' attribute.
+ NOTE: The PNP0C0D device listed above is highlighted (marked by "*")
+ to indicate it will be created only when its _STA methods return
+ PRESENT or FUNCTIONING.
--- /dev/null
+ACPI video extensions
+~~~~~~~~~~~~~~~~~~~~~
+
+This driver implement the ACPI Extensions For Display Adapters for
+integrated graphics devices on motherboard, as specified in ACPI 2.0
+Specification, Appendix B, allowing to perform some basic control like
+defining the video POST device, retrieving EDID information or to
+setup a video output, etc. Note that this is an ref. implementation
+only. It may or may not work for your integrated video device.
+
+The ACPI video driver does 3 things regarding backlight control:
+
+1 Export a sysfs interface for user space to control backlight level
+
+If the ACPI table has a video device, and acpi_backlight=vendor kernel
+command line is not present, the driver will register a backlight device
+and set the required backlight operation structure for it for the sysfs
+interface control. For every registered class device, there will be a
+directory named acpi_videoX under /sys/class/backlight.
+
+The backlight sysfs interface has a standard definition here:
+Documentation/ABI/stable/sysfs-class-backlight.
+
+And what ACPI video driver does is:
+actual_brightness: on read, control method _BQC will be evaluated to
+get the brightness level the firmware thinks it is at;
+bl_power: not implemented, will set the current brightness instead;
+brightness: on write, control method _BCM will run to set the requested
+brightness level;
+max_brightness: Derived from the _BCL package(see below);
+type: firmware
+
+Note that ACPI video backlight driver will always use index for
+brightness, actual_brightness and max_brightness. So if we have
+the following _BCL package:
+
+Method (_BCL, 0, NotSerialized)
+{
+ Return (Package (0x0C)
+ {
+ 0x64,
+ 0x32,
+ 0x0A,
+ 0x14,
+ 0x1E,
+ 0x28,
+ 0x32,
+ 0x3C,
+ 0x46,
+ 0x50,
+ 0x5A,
+ 0x64
+ })
+}
+
+The first two levels are for when laptop are on AC or on battery and are
+not used by Linux currently. The remaining 10 levels are supported levels
+that we can choose from. The applicable index values are from 0 (that
+corresponds to the 0x0A brightness value) to 9 (that corresponds to the
+0x64 brightness value) inclusive. Each of those index values is regarded
+as a "brightness level" indicator. Thus from the user space perspective
+the range of available brightness levels is from 0 to 9 (max_brightness)
+inclusive.
+
+2 Notify user space about hotkey event
+
+There are generally two cases for hotkey event reporting:
+i) For some laptops, when user presses the hotkey, a scancode will be
+ generated and sent to user space through the input device created by
+ the keyboard driver as a key type input event, with proper remap, the
+ following key code will appear to user space:
+
+ EV_KEY, KEY_BRIGHTNESSUP
+ EV_KEY, KEY_BRIGHTNESSDOWN
+ etc.
+
+For this case, ACPI video driver does not need to do anything(actually,
+it doesn't even know this happened).
+
+ii) For some laptops, the press of the hotkey will not generate the
+ scancode, instead, firmware will notify the video device ACPI node
+ about the event. The event value is defined in the ACPI spec. ACPI
+ video driver will generate an key type input event according to the
+ notify value it received and send the event to user space through the
+ input device it created:
+
+ event keycode
+ 0x86 KEY_BRIGHTNESSUP
+ 0x87 KEY_BRIGHTNESSDOWN
+ etc.
+
+so this would lead to the same effect as case i) now.
+
+Once user space tool receives this event, it can modify the backlight
+level through the sysfs interface.
+
+3 Change backlight level in the kernel
+
+This works for machines covered by case ii) in Section 2. Once the driver
+received a notification, it will set the backlight level accordingly. This does
+not affect the sending of event to user space, they are always sent to user
+space regardless of whether or not the video module controls the backlight level
+directly. This behaviour can be controlled through the brightness_switch_enabled
+module parameter as documented in kernel-parameters.txt. It is recommended to
+disable this behaviour once a GUI environment starts up and wants to have full
+control of the backlight level.
CPUs in MADT as hotpluggable CPUS. In the case there are no disabled CPUS
we assume 1/2 the number of CPUs currently present can be hotplugged.
- Caveat: Today's ACPI MADT can only provide 256 entries since the apicid field
- in MADT is only 8 bits.
+ Caveat: ACPI MADT can only provide 256 entries in systems with only ACPI 2.0c
+ or earlier ACPI version supported, because the apicid field in MADT is only
+ 8 bits. From ACPI 3.0, this limitation was removed since the apicid field
+ was extended to 32 bits with x2APIC introduced.
User Space Notification
video= [FB] Frame buffer configuration
See Documentation/fb/modedb.txt.
+ video.brightness_switch_enabled= [0,1]
+ If set to 1, on receiving an ACPI notify event
+ generated by hotkey, video driver will adjust brightness
+ level and then send out the event to user space through
+ the allocated input device; If set to 0, video driver
+ will only send out the event without touching backlight
+ brightness level.
+ default: 1
+
virtio_mmio.device=
[VMMIO] Memory mapped virtio (platform) device.
Two different PM QoS frameworks are available:
1. PM QoS classes for cpu_dma_latency, network_latency, network_throughput.
2. the per-device PM QoS framework provides the API to manage the per-device latency
-constraints.
+constraints and PM QoS flags.
Each parameters have defined units:
* latency: usec
node.
-2. PM QoS per-device latency framework
+2. PM QoS per-device latency and flags framework
+
+For each device, there are two lists of PM QoS requests. One is maintained
+along with the aggregated target of latency value and the other is for PM QoS
+flags. Values are updated in response to changes of the request list.
+
+Target latency value is simply the minimum of the request values held in the
+parameter list elements. The PM QoS flags aggregate value is a gather (bitwise
+OR) of all list elements' values. Two device PM QoS flags are defined currently:
+PM_QOS_FLAG_NO_POWER_OFF and PM_QOS_FLAG_REMOTE_WAKEUP.
-For each device a list of performance requests is maintained along with
-an aggregated target value. The aggregated target value is updated with
-changes to the request list or elements of the list. Typically the
-aggregated target value is simply the max or min of the request values held
-in the parameter list elements.
Note: the aggregated target value is implemented as an atomic variable so that
reading the aggregated value does not require any locking mechanism.
s32 dev_pm_qos_read_value(device):
Returns the aggregated value for a given device's constraints list.
+enum pm_qos_flags_status dev_pm_qos_flags(device, mask)
+Check PM QoS flags of the given device against the given mask of flags.
+The meaning of the return values is as follows:
+ PM_QOS_FLAGS_ALL: All flags from the mask are set
+ PM_QOS_FLAGS_SOME: Some flags from the mask are set
+ PM_QOS_FLAGS_NONE: No flags from the mask are set
+ PM_QOS_FLAGS_UNDEFINED: The device's PM QoS structure has not been
+ initialized or the list of requests is empty.
+
+int dev_pm_qos_add_ancestor_request(dev, handle, value)
+Add a PM QoS request for the first direct ancestor of the given device whose
+power.ignore_children flag is unset.
+
+int dev_pm_qos_expose_latency_limit(device, value)
+Add a request to the device's PM QoS list of latency constraints and create
+a sysfs attribute pm_qos_resume_latency_us under the device's power directory
+allowing user space to manipulate that request.
+
+void dev_pm_qos_hide_latency_limit(device)
+Drop the request added by dev_pm_qos_expose_latency_limit() from the device's
+PM QoS list of latency constraints and remove sysfs attribute pm_qos_resume_latency_us
+from the device's power directory.
+
+int dev_pm_qos_expose_flags(device, value)
+Add a request to the device's PM QoS list of flags and create sysfs attributes
+pm_qos_no_power_off and pm_qos_remote_wakeup under the device's power directory
+allowing user space to change these flags' value.
+
+void dev_pm_qos_hide_flags(device)
+Drop the request added by dev_pm_qos_expose_flags() from the device's PM QoS list
+of flags and remove sysfs attributes pm_qos_no_power_off and pm_qos_remote_wakeup
+under the device's power directory.
Notification mechanisms:
The per-device PM QoS framework has 2 different and distinct notification trees:
(or driver) in question, but the expected and recommended action is to check
if the device can be suspended (i.e. if all of the conditions necessary for
suspending the device are satisfied) and to queue up a suspend request for the
-device in that case. The value returned by this callback is ignored by the PM
-core.
+device in that case. If there is no idle callback, or if the callback returns
+0, then the PM core will attempt to carry out a runtime suspend of the device;
+in essence, it will call pm_runtime_suspend() directly. To prevent this (for
+example, if the callback routine has started a delayed suspend), the routine
+should return a non-zero value. Negative error return codes are ignored by the
+PM core.
The helper functions provided by the PM core, described in Section 4, guarantee
that the following constraints are met with respect to runtime PM callbacks for
removing the device from device hierarchy
int pm_runtime_idle(struct device *dev);
- - execute the subsystem-level idle callback for the device; returns 0 on
- success or error code on failure, where -EINPROGRESS means that
- ->runtime_idle() is already being executed
+ - execute the subsystem-level idle callback for the device; returns an
+ error code on failure, where -EINPROGRESS means that ->runtime_idle() is
+ already being executed; if there is no callback or the callback returns 0
+ then run pm_runtime_suspend(dev) and return its result
int pm_runtime_suspend(struct device *dev);
- execute the subsystem-level suspend callback for the device; returns 0 on
management callbacks provided by the PM core, defined in
driver/base/power/generic_ops.c:
- int pm_generic_runtime_idle(struct device *dev);
- - invoke the ->runtime_idle() callback provided by the driver of this
- device, if defined, and call pm_runtime_suspend() for this device if the
- return value is 0 or the callback is not defined
-
int pm_generic_runtime_suspend(struct device *dev);
- invoke the ->runtime_suspend() callback provided by the driver of this
device and return its result, or return -EINVAL if not defined
+++ /dev/null
-ACPI video extensions
-~~~~~~~~~~~~~~~~~~~~~
-
-This driver implement the ACPI Extensions For Display Adapters for
-integrated graphics devices on motherboard, as specified in ACPI 2.0
-Specification, Appendix B, allowing to perform some basic control like
-defining the video POST device, retrieving EDID information or to
-setup a video output, etc. Note that this is an ref. implementation
-only. It may or may not work for your integrated video device.
-
-Interfaces exposed to userland through /proc/acpi/video:
-
-VGA/info : display the supported video bus device capability like Video ROM, CRT/LCD/TV.
-VGA/ROM : Used to get a copy of the display devices' ROM data (up to 4k).
-VGA/POST_info : Used to determine what options are implemented.
-VGA/POST : Used to get/set POST device.
-VGA/DOS : Used to get/set ownership of output switching:
- Please refer ACPI spec B.4.1 _DOS
-VGA/CRT : CRT output
-VGA/LCD : LCD output
-VGA/TVO : TV output
-VGA/*/brightness : Used to get/set brightness of output device
-
-Notify event through /proc/acpi/event:
-
-#define ACPI_VIDEO_NOTIFY_SWITCH 0x80
-#define ACPI_VIDEO_NOTIFY_PROBE 0x81
-#define ACPI_VIDEO_NOTIFY_CYCLE 0x82
-#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83
-#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84
-
-#define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x82
-#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x83
-#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x84
-#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x85
-#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x86
-
The first parameter gives the power domain name (e.g. "mpu_pwrdm").
The second parameter is the power domain target state.
+4. PM QoS events
+================
+The PM QoS events are used for QoS add/update/remove request and for
+target/flags update.
+
+pm_qos_add_request "pm_qos_class=%s value=%d"
+pm_qos_update_request "pm_qos_class=%s value=%d"
+pm_qos_remove_request "pm_qos_class=%s value=%d"
+pm_qos_update_request_timeout "pm_qos_class=%s value=%d, timeout_us=%ld"
+
+The first parameter gives the QoS class name (e.g. "CPU_DMA_LATENCY").
+The second parameter is value to be added/updated/removed.
+The third parameter is timeout value in usec.
+
+pm_qos_update_target "action=%s prev_value=%d curr_value=%d"
+pm_qos_update_flags "action=%s prev_value=0x%x curr_value=0x%x"
+
+The first parameter gives the QoS action name (e.g. "ADD_REQ").
+The second parameter is the previous QoS value.
+The third parameter is the current QoS value to update.
+
+And, there are also events used for device PM QoS add/update/remove request.
+
+dev_pm_qos_add_request "device=%s type=%s new_value=%d"
+dev_pm_qos_update_request "device=%s type=%s new_value=%d"
+dev_pm_qos_remove_request "device=%s type=%s new_value=%d"
+
+The first parameter gives the device name which tries to add/update/remove
+QoS requests.
+The second parameter gives the request type (e.g. "DEV_PM_QOS_LATENCY").
+The third parameter is value to be added/updated/removed.
F: drivers/pnp/pnpacpi/
F: include/linux/acpi.h
F: include/acpi/
+F: Documentation/acpi
+F: Documentation/ABI/testing/sysfs-bus-acpi
ACPI FAN DRIVER
M: Zhang Rui <rui.zhang@intel.com>
T: git git://git.xilinx.com/linux-xlnx.git
S: Supported
F: arch/arm/mach-zynq/
+F: drivers/cpuidle/cpuidle-zynq.c
ARM64 PORT (AARCH64 ARCHITECTURE)
M: Catalin Marinas <catalin.marinas@arm.com>
DEVICE FREQUENCY (DEVFREQ)
M: MyungJoo Ham <myungjoo.ham@samsung.com>
M: Kyungmin Park <kyungmin.park@samsung.com>
-L: linux-kernel@vger.kernel.org
+L: linux-pm@vger.kernel.org
S: Maintained
F: drivers/devfreq/
return ret;
}
-static int _od_runtime_idle(struct device *dev)
-{
- return pm_generic_runtime_idle(dev);
-}
-
static int _od_runtime_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct dev_pm_domain omap_device_pm_domain = {
.ops = {
SET_RUNTIME_PM_OPS(_od_runtime_suspend, _od_runtime_resume,
- _od_runtime_idle)
+ NULL)
USE_PLATFORM_PM_SLEEP_OPS
.suspend_noirq = _od_suspend_noirq,
.resume_noirq = _od_resume_noirq,
}
omap_vp_enable(sr->voltdm);
- return sr_enable(sr->voltdm, volt);
+ return sr_enable(sr, volt);
}
static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
{
- sr_disable_errgen(sr->voltdm);
+ sr_disable_errgen(sr);
omap_vp_disable(sr->voltdm);
- sr_disable(sr->voltdm);
+ sr_disable(sr);
if (is_volt_reset)
voltdm_reset(sr->voltdm);
static int sr_class3_configure(struct omap_sr *sr)
{
- return sr_configure_errgen(sr->voltdm);
+ return sr_configure_errgen(sr);
}
/* SR class3 structure */
#endif
static int __init
-acpi_sba_ioc_add(struct acpi_device *device)
+acpi_sba_ioc_add(struct acpi_device *device,
+ const struct acpi_device_id *not_used)
{
struct ioc *ioc;
acpi_status status;
{"HWP0004", 0},
{"", 0},
};
-static struct acpi_driver acpi_sba_ioc_driver = {
- .name = "IOC IOMMU Driver",
- .ids = hp_ioc_iommu_device_ids,
- .ops = {
- .add = acpi_sba_ioc_add,
- },
+static struct acpi_scan_handler acpi_sba_ioc_handler = {
+ .ids = hp_ioc_iommu_device_ids,
+ .attach = acpi_sba_ioc_add,
};
+static int __init acpi_sba_ioc_init_acpi(void)
+{
+ return acpi_scan_add_handler(&acpi_sba_ioc_handler);
+}
+/* This has to run before acpi_scan_init(). */
+arch_initcall(acpi_sba_ioc_init_acpi);
+
extern struct dma_map_ops swiotlb_dma_ops;
static int __init
}
#endif
- acpi_bus_register_driver(&acpi_sba_ioc_driver);
+ /*
+ * ioc_list should be populated by the acpi_sba_ioc_handler's .attach()
+ * routine, but that only happens if acpi_scan_init() has already run.
+ */
if (!ioc_list) {
#ifdef CONFIG_IA64_GENERIC
/*
}
/* Low-level suspend routine. */
-extern int acpi_suspend_lowlevel(void);
+extern int (*acpi_suspend_lowlevel)(void);
/* Physical address to resume after wakeup */
#define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
#include <asm/mpspec.h>
#include <asm/smp.h>
+#include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
static int __initdata acpi_force = 0;
u32 acpi_rsdt_forced;
int acpi_disabled;
int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
int trigger, int polarity) = acpi_register_gsi_pic;
+#ifdef CONFIG_ACPI_SLEEP
+int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel;
+#else
+int (*acpi_suspend_lowlevel)(void);
+#endif
+
/*
* success: return IRQ number (>=0)
* failure: return < 0
#endif
/**
- * acpi_suspend_lowlevel - save kernel state
+ * x86_acpi_suspend_lowlevel - save kernel state
*
* Create an identity mapped page table and copy the wakeup routine to
* low memory.
*/
-int acpi_suspend_lowlevel(void)
+int x86_acpi_suspend_lowlevel(void)
{
struct wakeup_header *header =
(struct wakeup_header *) __va(real_mode_header->wakeup_header);
extern void wakeup_long64(void);
extern void do_suspend_lowlevel(void);
+
+extern int x86_acpi_suspend_lowlevel(void);
acpi-y += bus.o glue.o
acpi-y += scan.o
acpi-y += resource.o
+acpi-y += acpi_processor.o
acpi-y += processor_core.o
acpi-y += ec.o
acpi-$(CONFIG_ACPI_DOCK) += dock.o
acpi-y += power.o
acpi-y += event.o
acpi-y += sysfs.o
+acpi-$(CONFIG_X86) += acpi_cmos_rtc.o
acpi-$(CONFIG_DEBUG_FS) += debugfs.o
acpi-$(CONFIG_ACPI_NUMA) += numa.o
acpi-$(CONFIG_ACPI_PROCFS_POWER) += cm_sbs.o
--- /dev/null
+/*
+ * ACPI support for CMOS RTC Address Space access
+ *
+ * Copyright (C) 2013, Intel Corporation
+ * Authors: Lan Tianyu <tianyu.lan@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <asm-generic/rtc.h>
+
+#include "internal.h"
+
+#define PREFIX "ACPI: "
+
+ACPI_MODULE_NAME("cmos rtc");
+
+static const struct acpi_device_id acpi_cmos_rtc_ids[] = {
+ { "PNP0B00" },
+ { "PNP0B01" },
+ { "PNP0B02" },
+ {}
+};
+
+static acpi_status
+acpi_cmos_rtc_space_handler(u32 function, acpi_physical_address address,
+ u32 bits, u64 *value64,
+ void *handler_context, void *region_context)
+{
+ int i;
+ u8 *value = (u8 *)&value64;
+
+ if (address > 0xff || !value64)
+ return AE_BAD_PARAMETER;
+
+ if (function != ACPI_WRITE && function != ACPI_READ)
+ return AE_BAD_PARAMETER;
+
+ spin_lock_irq(&rtc_lock);
+
+ for (i = 0; i < DIV_ROUND_UP(bits, 8); ++i, ++address, ++value)
+ if (function == ACPI_READ)
+ *value = CMOS_READ(address);
+ else
+ CMOS_WRITE(*value, address);
+
+ spin_unlock_irq(&rtc_lock);
+
+ return AE_OK;
+}
+
+static int acpi_install_cmos_rtc_space_handler(struct acpi_device *adev,
+ const struct acpi_device_id *id)
+{
+ acpi_status status;
+
+ status = acpi_install_address_space_handler(adev->handle,
+ ACPI_ADR_SPACE_CMOS,
+ &acpi_cmos_rtc_space_handler,
+ NULL, NULL);
+ if (ACPI_FAILURE(status)) {
+ pr_err(PREFIX "Error installing CMOS-RTC region handler\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void acpi_remove_cmos_rtc_space_handler(struct acpi_device *adev)
+{
+ if (ACPI_FAILURE(acpi_remove_address_space_handler(adev->handle,
+ ACPI_ADR_SPACE_CMOS, &acpi_cmos_rtc_space_handler)))
+ pr_err(PREFIX "Error removing CMOS-RTC region handler\n");
+}
+
+static struct acpi_scan_handler cmos_rtc_handler = {
+ .ids = acpi_cmos_rtc_ids,
+ .attach = acpi_install_cmos_rtc_space_handler,
+ .detach = acpi_remove_cmos_rtc_space_handler,
+};
+
+void __init acpi_cmos_rtc_init(void)
+{
+ acpi_scan_add_handler(&cmos_rtc_handler);
+}
#define LPSS_GENERAL_LTR_MODE_SW BIT(2)
#define LPSS_SW_LTR 0x10
#define LPSS_AUTO_LTR 0x14
+#define LPSS_TX_INT 0x20
+#define LPSS_TX_INT_MASK BIT(1)
+
+struct lpss_shared_clock {
+ const char *name;
+ unsigned long rate;
+ struct clk *clk;
+};
+
+struct lpss_private_data;
struct lpss_device_desc {
bool clk_required;
const char *clkdev_name;
bool ltr_required;
unsigned int prv_offset;
+ size_t prv_size_override;
+ bool clk_gate;
+ struct lpss_shared_clock *shared_clock;
+ void (*setup)(struct lpss_private_data *pdata);
};
static struct lpss_device_desc lpss_dma_desc = {
const struct lpss_device_desc *dev_desc;
};
+static void lpss_uart_setup(struct lpss_private_data *pdata)
+{
+ unsigned int tx_int_offset = pdata->dev_desc->prv_offset + LPSS_TX_INT;
+ u32 reg;
+
+ reg = readl(pdata->mmio_base + tx_int_offset);
+ writel(reg | LPSS_TX_INT_MASK, pdata->mmio_base + tx_int_offset);
+}
+
static struct lpss_device_desc lpt_dev_desc = {
.clk_required = true,
.prv_offset = 0x800,
.ltr_required = true,
+ .clk_gate = true,
+};
+
+static struct lpss_device_desc lpt_uart_dev_desc = {
+ .clk_required = true,
+ .prv_offset = 0x800,
+ .ltr_required = true,
+ .clk_gate = true,
+ .setup = lpss_uart_setup,
};
static struct lpss_device_desc lpt_sdio_dev_desc = {
.prv_offset = 0x1000,
+ .prv_size_override = 0x1018,
.ltr_required = true,
};
+static struct lpss_shared_clock uart_clock = {
+ .name = "uart_clk",
+ .rate = 44236800,
+};
+
+static struct lpss_device_desc byt_uart_dev_desc = {
+ .clk_required = true,
+ .prv_offset = 0x800,
+ .clk_gate = true,
+ .shared_clock = &uart_clock,
+ .setup = lpss_uart_setup,
+};
+
+static struct lpss_shared_clock spi_clock = {
+ .name = "spi_clk",
+ .rate = 50000000,
+};
+
+static struct lpss_device_desc byt_spi_dev_desc = {
+ .clk_required = true,
+ .prv_offset = 0x400,
+ .clk_gate = true,
+ .shared_clock = &spi_clock,
+};
+
+static struct lpss_device_desc byt_sdio_dev_desc = {
+ .clk_required = true,
+};
+
+static struct lpss_shared_clock i2c_clock = {
+ .name = "i2c_clk",
+ .rate = 100000000,
+};
+
+static struct lpss_device_desc byt_i2c_dev_desc = {
+ .clk_required = true,
+ .prv_offset = 0x800,
+ .shared_clock = &i2c_clock,
+};
+
static const struct acpi_device_id acpi_lpss_device_ids[] = {
/* Generic LPSS devices */
{ "INTL9C60", (unsigned long)&lpss_dma_desc },
{ "INT33C1", (unsigned long)&lpt_dev_desc },
{ "INT33C2", (unsigned long)&lpt_dev_desc },
{ "INT33C3", (unsigned long)&lpt_dev_desc },
- { "INT33C4", (unsigned long)&lpt_dev_desc },
- { "INT33C5", (unsigned long)&lpt_dev_desc },
+ { "INT33C4", (unsigned long)&lpt_uart_dev_desc },
+ { "INT33C5", (unsigned long)&lpt_uart_dev_desc },
{ "INT33C6", (unsigned long)&lpt_sdio_dev_desc },
{ "INT33C7", },
+ /* BayTrail LPSS devices */
+ { "80860F0A", (unsigned long)&byt_uart_dev_desc },
+ { "80860F0E", (unsigned long)&byt_spi_dev_desc },
+ { "80860F14", (unsigned long)&byt_sdio_dev_desc },
+ { "80860F41", (unsigned long)&byt_i2c_dev_desc },
+ { "INT33B2", },
+
{ }
};
struct lpss_private_data *pdata)
{
const struct lpss_device_desc *dev_desc = pdata->dev_desc;
+ struct lpss_shared_clock *shared_clock = dev_desc->shared_clock;
+ struct clk *clk = ERR_PTR(-ENODEV);
struct lpss_clk_data *clk_data;
+ const char *parent;
if (!lpss_clk_dev)
lpt_register_clock_device();
|| pdata->mmio_size < dev_desc->prv_offset + LPSS_CLK_SIZE)
return -ENODATA;
- pdata->clk = clk_register_gate(NULL, dev_name(&adev->dev),
- clk_data->name, 0,
- pdata->mmio_base + dev_desc->prv_offset,
- 0, 0, NULL);
- if (IS_ERR(pdata->clk))
- return PTR_ERR(pdata->clk);
+ parent = clk_data->name;
+
+ if (shared_clock) {
+ clk = shared_clock->clk;
+ if (!clk) {
+ clk = clk_register_fixed_rate(NULL, shared_clock->name,
+ "lpss_clk", 0,
+ shared_clock->rate);
+ shared_clock->clk = clk;
+ }
+ parent = shared_clock->name;
+ }
+
+ if (dev_desc->clk_gate) {
+ clk = clk_register_gate(NULL, dev_name(&adev->dev), parent, 0,
+ pdata->mmio_base + dev_desc->prv_offset,
+ 0, 0, NULL);
+ pdata->clk = clk;
+ }
- clk_register_clkdev(pdata->clk, NULL, dev_name(&adev->dev));
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ clk_register_clkdev(clk, NULL, dev_name(&adev->dev));
return 0;
}
list_for_each_entry(rentry, &resource_list, node)
if (resource_type(&rentry->res) == IORESOURCE_MEM) {
- pdata->mmio_size = resource_size(&rentry->res);
+ if (dev_desc->prv_size_override)
+ pdata->mmio_size = dev_desc->prv_size_override;
+ else
+ pdata->mmio_size = resource_size(&rentry->res);
pdata->mmio_base = ioremap(rentry->res.start,
pdata->mmio_size);
pdata->dev_desc = dev_desc;
goto err_out;
}
+ if (dev_desc->setup)
+ dev_desc->setup(pdata);
+
adev->driver_data = pdata;
ret = acpi_create_platform_device(adev, id);
if (ret > 0)
*/
#include <linux/acpi.h>
+#include <linux/memory.h>
#include <linux/memory_hotplug.h>
#include "internal.h"
return 0;
}
+static unsigned long acpi_meminfo_start_pfn(struct acpi_memory_info *info)
+{
+ return PFN_DOWN(info->start_addr);
+}
+
+static unsigned long acpi_meminfo_end_pfn(struct acpi_memory_info *info)
+{
+ return PFN_UP(info->start_addr + info->length-1);
+}
+
+static int acpi_bind_memblk(struct memory_block *mem, void *arg)
+{
+ return acpi_bind_one(&mem->dev, (acpi_handle)arg);
+}
+
+static int acpi_bind_memory_blocks(struct acpi_memory_info *info,
+ acpi_handle handle)
+{
+ return walk_memory_range(acpi_meminfo_start_pfn(info),
+ acpi_meminfo_end_pfn(info), (void *)handle,
+ acpi_bind_memblk);
+}
+
+static int acpi_unbind_memblk(struct memory_block *mem, void *arg)
+{
+ acpi_unbind_one(&mem->dev);
+ return 0;
+}
+
+static void acpi_unbind_memory_blocks(struct acpi_memory_info *info,
+ acpi_handle handle)
+{
+ walk_memory_range(acpi_meminfo_start_pfn(info),
+ acpi_meminfo_end_pfn(info), NULL, acpi_unbind_memblk);
+}
+
static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
{
+ acpi_handle handle = mem_device->device->handle;
int result, num_enabled = 0;
struct acpi_memory_info *info;
int node;
- node = acpi_get_node(mem_device->device->handle);
+ node = acpi_get_node(handle);
/*
* Tell the VM there is more memory here...
* Note: Assume that this function returns zero on success
if (result && result != -EEXIST)
continue;
+ result = acpi_bind_memory_blocks(info, handle);
+ if (result) {
+ acpi_unbind_memory_blocks(info, handle);
+ return -ENODEV;
+ }
+
info->enabled = 1;
/*
return 0;
}
-static int acpi_memory_remove_memory(struct acpi_memory_device *mem_device)
+static void acpi_memory_remove_memory(struct acpi_memory_device *mem_device)
{
- int result = 0, nid;
+ acpi_handle handle = mem_device->device->handle;
struct acpi_memory_info *info, *n;
-
- nid = acpi_get_node(mem_device->device->handle);
+ int nid = acpi_get_node(handle);
list_for_each_entry_safe(info, n, &mem_device->res_list, list) {
if (!info->enabled)
if (nid < 0)
nid = memory_add_physaddr_to_nid(info->start_addr);
- result = remove_memory(nid, info->start_addr, info->length);
- if (result)
- return result;
+ acpi_unbind_memory_blocks(info, handle);
+ remove_memory(nid, info->start_addr, info->length);
list_del(&info->list);
kfree(info);
}
-
- return result;
}
static void acpi_memory_device_free(struct acpi_memory_device *mem_device)
if (result) {
dev_err(&device->dev, "acpi_memory_enable_device() error\n");
acpi_memory_device_free(mem_device);
- return -ENODEV;
+ return result;
}
dev_dbg(&device->dev, "Memory device configured by ACPI\n");
--- /dev/null
+/*
+ * acpi_processor.c - ACPI processor enumeration support
+ *
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (C) 2004 Dominik Brodowski <linux@brodo.de>
+ * Copyright (C) 2004 Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
+ * Copyright (C) 2013, Intel Corporation
+ * Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include <acpi/processor.h>
+
+#include <asm/cpu.h>
+
+#include "internal.h"
+
+#define _COMPONENT ACPI_PROCESSOR_COMPONENT
+
+ACPI_MODULE_NAME("processor");
+
+DEFINE_PER_CPU(struct acpi_processor *, processors);
+EXPORT_PER_CPU_SYMBOL(processors);
+
+/* --------------------------------------------------------------------------
+ Errata Handling
+ -------------------------------------------------------------------------- */
+
+struct acpi_processor_errata errata __read_mostly;
+EXPORT_SYMBOL_GPL(errata);
+
+static int acpi_processor_errata_piix4(struct pci_dev *dev)
+{
+ u8 value1 = 0;
+ u8 value2 = 0;
+
+
+ if (!dev)
+ return -EINVAL;
+
+ /*
+ * Note that 'dev' references the PIIX4 ACPI Controller.
+ */
+
+ switch (dev->revision) {
+ case 0:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 A-step\n"));
+ break;
+ case 1:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 B-step\n"));
+ break;
+ case 2:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4E\n"));
+ break;
+ case 3:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4M\n"));
+ break;
+ default:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found unknown PIIX4\n"));
+ break;
+ }
+
+ switch (dev->revision) {
+
+ case 0: /* PIIX4 A-step */
+ case 1: /* PIIX4 B-step */
+ /*
+ * See specification changes #13 ("Manual Throttle Duty Cycle")
+ * and #14 ("Enabling and Disabling Manual Throttle"), plus
+ * erratum #5 ("STPCLK# Deassertion Time") from the January
+ * 2002 PIIX4 specification update. Applies to only older
+ * PIIX4 models.
+ */
+ errata.piix4.throttle = 1;
+
+ case 2: /* PIIX4E */
+ case 3: /* PIIX4M */
+ /*
+ * See erratum #18 ("C3 Power State/BMIDE and Type-F DMA
+ * Livelock") from the January 2002 PIIX4 specification update.
+ * Applies to all PIIX4 models.
+ */
+
+ /*
+ * BM-IDE
+ * ------
+ * Find the PIIX4 IDE Controller and get the Bus Master IDE
+ * Status register address. We'll use this later to read
+ * each IDE controller's DMA status to make sure we catch all
+ * DMA activity.
+ */
+ dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82371AB,
+ PCI_ANY_ID, PCI_ANY_ID, NULL);
+ if (dev) {
+ errata.piix4.bmisx = pci_resource_start(dev, 4);
+ pci_dev_put(dev);
+ }
+
+ /*
+ * Type-F DMA
+ * ----------
+ * Find the PIIX4 ISA Controller and read the Motherboard
+ * DMA controller's status to see if Type-F (Fast) DMA mode
+ * is enabled (bit 7) on either channel. Note that we'll
+ * disable C3 support if this is enabled, as some legacy
+ * devices won't operate well if fast DMA is disabled.
+ */
+ dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82371AB_0,
+ PCI_ANY_ID, PCI_ANY_ID, NULL);
+ if (dev) {
+ pci_read_config_byte(dev, 0x76, &value1);
+ pci_read_config_byte(dev, 0x77, &value2);
+ if ((value1 & 0x80) || (value2 & 0x80))
+ errata.piix4.fdma = 1;
+ pci_dev_put(dev);
+ }
+
+ break;
+ }
+
+ if (errata.piix4.bmisx)
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Bus master activity detection (BM-IDE) erratum enabled\n"));
+ if (errata.piix4.fdma)
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Type-F DMA livelock erratum (C3 disabled)\n"));
+
+ return 0;
+}
+
+static int acpi_processor_errata(struct acpi_processor *pr)
+{
+ int result = 0;
+ struct pci_dev *dev = NULL;
+
+
+ if (!pr)
+ return -EINVAL;
+
+ /*
+ * PIIX4
+ */
+ dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82371AB_3, PCI_ANY_ID,
+ PCI_ANY_ID, NULL);
+ if (dev) {
+ result = acpi_processor_errata_piix4(dev);
+ pci_dev_put(dev);
+ }
+
+ return result;
+}
+
+/* --------------------------------------------------------------------------
+ Initialization
+ -------------------------------------------------------------------------- */
+
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+static int acpi_processor_hotadd_init(struct acpi_processor *pr)
+{
+ unsigned long long sta;
+ acpi_status status;
+ int ret;
+
+ status = acpi_evaluate_integer(pr->handle, "_STA", NULL, &sta);
+ if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT))
+ return -ENODEV;
+
+ ret = acpi_map_lsapic(pr->handle, &pr->id);
+ if (ret)
+ return ret;
+
+ ret = arch_register_cpu(pr->id);
+ if (ret) {
+ acpi_unmap_lsapic(pr->id);
+ return ret;
+ }
+
+ /*
+ * CPU got hot-added, but cpu_data is not initialized yet. Set a flag
+ * to delay cpu_idle/throttling initialization and do it when the CPU
+ * gets online for the first time.
+ */
+ pr_info("CPU%d has been hot-added\n", pr->id);
+ pr->flags.need_hotplug_init = 1;
+ return 0;
+}
+#else
+static inline int acpi_processor_hotadd_init(struct acpi_processor *pr)
+{
+ return -ENODEV;
+}
+#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
+static int acpi_processor_get_info(struct acpi_device *device)
+{
+ union acpi_object object = { 0 };
+ struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
+ struct acpi_processor *pr = acpi_driver_data(device);
+ int cpu_index, device_declaration = 0;
+ acpi_status status = AE_OK;
+ static int cpu0_initialized;
+
+ if (num_online_cpus() > 1)
+ errata.smp = TRUE;
+
+ acpi_processor_errata(pr);
+
+ /*
+ * Check to see if we have bus mastering arbitration control. This
+ * is required for proper C3 usage (to maintain cache coherency).
+ */
+ if (acpi_gbl_FADT.pm2_control_block && acpi_gbl_FADT.pm2_control_length) {
+ pr->flags.bm_control = 1;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Bus mastering arbitration control present\n"));
+ } else
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "No bus mastering arbitration control\n"));
+
+ if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
+ /* Declared with "Processor" statement; match ProcessorID */
+ status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
+ if (ACPI_FAILURE(status)) {
+ dev_err(&device->dev,
+ "Failed to evaluate processor object (0x%x)\n",
+ status);
+ return -ENODEV;
+ }
+
+ /*
+ * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
+ * >>> 'acpi_get_processor_id(acpi_id, &id)' in
+ * arch/xxx/acpi.c
+ */
+ pr->acpi_id = object.processor.proc_id;
+ } else {
+ /*
+ * Declared with "Device" statement; match _UID.
+ * Note that we don't handle string _UIDs yet.
+ */
+ unsigned long long value;
+ status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
+ NULL, &value);
+ if (ACPI_FAILURE(status)) {
+ dev_err(&device->dev,
+ "Failed to evaluate processor _UID (0x%x)\n",
+ status);
+ return -ENODEV;
+ }
+ device_declaration = 1;
+ pr->acpi_id = value;
+ }
+ cpu_index = acpi_get_cpuid(pr->handle, device_declaration, pr->acpi_id);
+
+ /* Handle UP system running SMP kernel, with no LAPIC in MADT */
+ if (!cpu0_initialized && (cpu_index == -1) &&
+ (num_online_cpus() == 1)) {
+ cpu_index = 0;
+ }
+
+ cpu0_initialized = 1;
+
+ pr->id = cpu_index;
+
+ /*
+ * Extra Processor objects may be enumerated on MP systems with
+ * less than the max # of CPUs. They should be ignored _iff
+ * they are physically not present.
+ */
+ if (pr->id == -1) {
+ int ret = acpi_processor_hotadd_init(pr);
+ if (ret)
+ return ret;
+ }
+ /*
+ * On some boxes several processors use the same processor bus id.
+ * But they are located in different scope. For example:
+ * \_SB.SCK0.CPU0
+ * \_SB.SCK1.CPU0
+ * Rename the processor device bus id. And the new bus id will be
+ * generated as the following format:
+ * CPU+CPU ID.
+ */
+ sprintf(acpi_device_bid(device), "CPU%X", pr->id);
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
+ pr->acpi_id));
+
+ if (!object.processor.pblk_address)
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
+ else if (object.processor.pblk_length != 6)
+ dev_err(&device->dev, "Invalid PBLK length [%d]\n",
+ object.processor.pblk_length);
+ else {
+ pr->throttling.address = object.processor.pblk_address;
+ pr->throttling.duty_offset = acpi_gbl_FADT.duty_offset;
+ pr->throttling.duty_width = acpi_gbl_FADT.duty_width;
+
+ pr->pblk = object.processor.pblk_address;
+
+ /*
+ * We don't care about error returns - we just try to mark
+ * these reserved so that nobody else is confused into thinking
+ * that this region might be unused..
+ *
+ * (In particular, allocating the IO range for Cardbus)
+ */
+ request_region(pr->throttling.address, 6, "ACPI CPU throttle");
+ }
+
+ /*
+ * If ACPI describes a slot number for this CPU, we can use it to
+ * ensure we get the right value in the "physical id" field
+ * of /proc/cpuinfo
+ */
+ status = acpi_evaluate_object(pr->handle, "_SUN", NULL, &buffer);
+ if (ACPI_SUCCESS(status))
+ arch_fix_phys_package_id(pr->id, object.integer.value);
+
+ return 0;
+}
+
+/*
+ * Do not put anything in here which needs the core to be online.
+ * For example MSR access or setting up things which check for cpuinfo_x86
+ * (cpu_data(cpu)) values, like CPU feature flags, family, model, etc.
+ * Such things have to be put in and set up by the processor driver's .probe().
+ */
+static DEFINE_PER_CPU(void *, processor_device_array);
+
+static int __cpuinit acpi_processor_add(struct acpi_device *device,
+ const struct acpi_device_id *id)
+{
+ struct acpi_processor *pr;
+ struct device *dev;
+ int result = 0;
+
+ pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL);
+ if (!pr)
+ return -ENOMEM;
+
+ if (!zalloc_cpumask_var(&pr->throttling.shared_cpu_map, GFP_KERNEL)) {
+ result = -ENOMEM;
+ goto err_free_pr;
+ }
+
+ pr->handle = device->handle;
+ strcpy(acpi_device_name(device), ACPI_PROCESSOR_DEVICE_NAME);
+ strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS);
+ device->driver_data = pr;
+
+ result = acpi_processor_get_info(device);
+ if (result) /* Processor is not physically present or unavailable */
+ return 0;
+
+#ifdef CONFIG_SMP
+ if (pr->id >= setup_max_cpus && pr->id != 0)
+ return 0;
+#endif
+
+ BUG_ON(pr->id >= nr_cpu_ids);
+
+ /*
+ * Buggy BIOS check.
+ * ACPI id of processors can be reported wrongly by the BIOS.
+ * Don't trust it blindly
+ */
+ if (per_cpu(processor_device_array, pr->id) != NULL &&
+ per_cpu(processor_device_array, pr->id) != device) {
+ dev_warn(&device->dev,
+ "BIOS reported wrong ACPI id %d for the processor\n",
+ pr->id);
+ /* Give up, but do not abort the namespace scan. */
+ goto err;
+ }
+ /*
+ * processor_device_array is not cleared on errors to allow buggy BIOS
+ * checks.
+ */
+ per_cpu(processor_device_array, pr->id) = device;
+ per_cpu(processors, pr->id) = pr;
+
+ dev = get_cpu_device(pr->id);
+ if (!dev) {
+ result = -ENODEV;
+ goto err;
+ }
+
+ result = acpi_bind_one(dev, pr->handle);
+ if (result)
+ goto err;
+
+ pr->dev = dev;
+ dev->offline = pr->flags.need_hotplug_init;
+
+ /* Trigger the processor driver's .probe() if present. */
+ if (device_attach(dev) >= 0)
+ return 1;
+
+ dev_err(dev, "Processor driver could not be attached\n");
+ acpi_unbind_one(dev);
+
+ err:
+ free_cpumask_var(pr->throttling.shared_cpu_map);
+ device->driver_data = NULL;
+ per_cpu(processors, pr->id) = NULL;
+ err_free_pr:
+ kfree(pr);
+ return result;
+}
+
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+/* --------------------------------------------------------------------------
+ Removal
+ -------------------------------------------------------------------------- */
+
+static void acpi_processor_remove(struct acpi_device *device)
+{
+ struct acpi_processor *pr;
+
+ if (!device || !acpi_driver_data(device))
+ return;
+
+ pr = acpi_driver_data(device);
+ if (pr->id >= nr_cpu_ids)
+ goto out;
+
+ /*
+ * The only reason why we ever get here is CPU hot-removal. The CPU is
+ * already offline and the ACPI device removal locking prevents it from
+ * being put back online at this point.
+ *
+ * Unbind the driver from the processor device and detach it from the
+ * ACPI companion object.
+ */
+ device_release_driver(pr->dev);
+ acpi_unbind_one(pr->dev);
+
+ /* Clean up. */
+ per_cpu(processor_device_array, pr->id) = NULL;
+ per_cpu(processors, pr->id) = NULL;
+ try_offline_node(cpu_to_node(pr->id));
+
+ /* Remove the CPU. */
+ get_online_cpus();
+ arch_unregister_cpu(pr->id);
+ acpi_unmap_lsapic(pr->id);
+ put_online_cpus();
+
+ out:
+ free_cpumask_var(pr->throttling.shared_cpu_map);
+ kfree(pr);
+}
+#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
+/*
+ * The following ACPI IDs are known to be suitable for representing as
+ * processor devices.
+ */
+static const struct acpi_device_id processor_device_ids[] = {
+
+ { ACPI_PROCESSOR_OBJECT_HID, },
+ { ACPI_PROCESSOR_DEVICE_HID, },
+
+ { }
+};
+
+static struct acpi_scan_handler __refdata processor_handler = {
+ .ids = processor_device_ids,
+ .attach = acpi_processor_add,
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+ .detach = acpi_processor_remove,
+#endif
+ .hotplug = {
+ .enabled = true,
+ },
+};
+
+void __init acpi_processor_init(void)
+{
+ acpi_scan_add_handler_with_hotplug(&processor_handler, "processor");
+}
acpi-y += \
nsaccess.o \
nsalloc.o \
+ nsarguments.o \
nsconvert.o \
nsdump.o \
nseval.o \
tbfadt.o \
tbfind.o \
tbinstal.o \
+ tbprint.o \
tbutils.o \
tbxface.o \
tbxfload.o \
acpi-y += \
utaddress.o \
utalloc.o \
+ utbuffer.o \
utcopy.o \
utexcep.o \
utdebug.o \
utdecode.o \
utdelete.o \
+ uterror.o \
uteval.o \
utglobal.o \
utids.o \
*/
u8 ACPI_INIT_GLOBAL(acpi_gbl_disable_auto_repair, FALSE);
+/*
+ * Optionally do not load any SSDTs from the RSDT/XSDT during initialization.
+ * This can be useful for debugging ACPI problems on some machines.
+ */
+u8 ACPI_INIT_GLOBAL(acpi_gbl_disable_ssdt_table_load, FALSE);
+
/* acpi_gbl_FADT is a local copy of the FADT, converted to a common format. */
struct acpi_table_fadt acpi_gbl_FADT;
#pragma pack()
-/* Data block used during object validation */
-
-struct acpi_predefined_data {
- char *pathname;
- const union acpi_predefined_info *predefined;
- union acpi_operand_object *parent_package;
- struct acpi_namespace_node *node;
- u32 flags;
- u32 return_btype;
- u8 node_flags;
-};
-
-/* Defines for Flags field above */
-
-#define ACPI_OBJECT_REPAIRED 1
-#define ACPI_OBJECT_WRAPPED 2
-
/* Return object auto-repair info */
typedef acpi_status(*acpi_object_converter) (union acpi_operand_object
* the plist contains a set of parens to allow variable-length lists.
* These macros are used for both the debug and non-debug versions of the code.
*/
-#define ACPI_ERROR_NAMESPACE(s, e) acpi_ut_namespace_error (AE_INFO, s, e);
-#define ACPI_ERROR_METHOD(s, n, p, e) acpi_ut_method_error (AE_INFO, s, n, p, e);
-#define ACPI_WARN_PREDEFINED(plist) acpi_ut_predefined_warning plist
-#define ACPI_INFO_PREDEFINED(plist) acpi_ut_predefined_info plist
+#define ACPI_ERROR_NAMESPACE(s, e) acpi_ut_namespace_error (AE_INFO, s, e);
+#define ACPI_ERROR_METHOD(s, n, p, e) acpi_ut_method_error (AE_INFO, s, n, p, e);
+#define ACPI_WARN_PREDEFINED(plist) acpi_ut_predefined_warning plist
+#define ACPI_INFO_PREDEFINED(plist) acpi_ut_predefined_info plist
+#define ACPI_BIOS_ERROR_PREDEFINED(plist) acpi_ut_predefined_bios_error plist
#else
#define ACPI_ERROR_METHOD(s, n, p, e)
#define ACPI_WARN_PREDEFINED(plist)
#define ACPI_INFO_PREDEFINED(plist)
+#define ACPI_BIOS_ERROR_PREDEFINED(plist)
#endif /* ACPI_NO_ERROR_MESSAGES */
void acpi_ns_exec_module_code_list(void);
/*
- * nspredef - Support for predefined/reserved names
+ * nsarguments - Argument count/type checking for predefined/reserved names
*/
-acpi_status
-acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
- u32 user_param_count,
- acpi_status return_status,
- union acpi_operand_object **return_object);
+void
+acpi_ns_check_argument_count(char *pathname,
+ struct acpi_namespace_node *node,
+ u32 user_param_count,
+ const union acpi_predefined_info *info);
void
-acpi_ns_check_parameter_count(char *pathname,
+acpi_ns_check_acpi_compliance(char *pathname,
struct acpi_namespace_node *node,
- u32 user_param_count,
- const union acpi_predefined_info *info);
+ const union acpi_predefined_info *predefined);
+
+void acpi_ns_check_argument_types(struct acpi_evaluate_info *info);
+
+/*
+ * nspredef - Return value checking for predefined/reserved names
+ */
+acpi_status
+acpi_ns_check_return_value(struct acpi_namespace_node *node,
+ struct acpi_evaluate_info *info,
+ u32 user_param_count,
+ acpi_status return_status,
+ union acpi_operand_object **return_object);
acpi_status
-acpi_ns_check_object_type(struct acpi_predefined_data *data,
+acpi_ns_check_object_type(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr,
u32 expected_btypes, u32 package_index);
* nsprepkg - Validation of predefined name packages
*/
acpi_status
-acpi_ns_check_package(struct acpi_predefined_data *data,
+acpi_ns_check_package(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
/*
* predefined methods/objects
*/
acpi_status
-acpi_ns_simple_repair(struct acpi_predefined_data *data,
+acpi_ns_simple_repair(struct acpi_evaluate_info *info,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr);
acpi_status
-acpi_ns_wrap_with_package(struct acpi_predefined_data *data,
+acpi_ns_wrap_with_package(struct acpi_evaluate_info *info,
union acpi_operand_object *original_object,
union acpi_operand_object **obj_desc_ptr);
acpi_status
-acpi_ns_repair_null_element(struct acpi_predefined_data *data,
+acpi_ns_repair_null_element(struct acpi_evaluate_info *info,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr);
void
-acpi_ns_remove_null_elements(struct acpi_predefined_data *data,
+acpi_ns_remove_null_elements(struct acpi_evaluate_info *info,
u8 package_type,
union acpi_operand_object *obj_desc);
* predefined methods/objects
*/
acpi_status
-acpi_ns_complex_repairs(struct acpi_predefined_data *data,
+acpi_ns_complex_repairs(struct acpi_evaluate_info *info,
struct acpi_namespace_node *node,
acpi_status validate_status,
union acpi_operand_object **return_object_ptr);
#define ARG_COUNT_IS_MINIMUM 0x8000
#define METHOD_MAX_ARG_TYPE ACPI_TYPE_PACKAGE
-#define METHOD_GET_COUNT(arg_list) (arg_list & METHOD_ARG_MASK)
-#define METHOD_GET_NEXT_ARG(arg_list) (arg_list >> METHOD_ARG_BIT_WIDTH)
+#define METHOD_GET_ARG_COUNT(arg_list) ((arg_list) & METHOD_ARG_MASK)
+#define METHOD_GET_NEXT_TYPE(arg_list) (((arg_list) >>= METHOD_ARG_BIT_WIDTH) & METHOD_ARG_MASK)
/* Macros used to build the predefined info table */
};
/*
- * Structure used to pass object evaluation parameters.
+ * Structure used to pass object evaluation information and parameters.
* Purpose is to reduce CPU stack use.
*/
struct acpi_evaluate_info {
- struct acpi_namespace_node *prefix_node;
- char *pathname;
- union acpi_operand_object *obj_desc;
- union acpi_operand_object **parameters;
- struct acpi_namespace_node *resolved_node;
- union acpi_operand_object *return_object;
- u8 param_count;
- u8 pass_number;
- u8 return_object_type;
- u8 flags;
+ /* The first 3 elements are passed by the caller to acpi_ns_evaluate */
+
+ struct acpi_namespace_node *prefix_node; /* Input: starting node */
+ char *relative_pathname; /* Input: path relative to prefix_node */
+ union acpi_operand_object **parameters; /* Input: argument list */
+
+ struct acpi_namespace_node *node; /* Resolved node (prefix_node:relative_pathname) */
+ union acpi_operand_object *obj_desc; /* Object attached to the resolved node */
+ char *full_pathname; /* Full pathname of the resolved node */
+
+ const union acpi_predefined_info *predefined; /* Used if Node is a predefined name */
+ union acpi_operand_object *return_object; /* Object returned from the evaluation */
+ union acpi_operand_object *parent_package; /* Used if return object is a Package */
+
+ u32 return_flags; /* Used for return value analysis */
+ u32 return_btype; /* Bitmapped type of the returned object */
+ u16 param_count; /* Count of the input argument list */
+ u8 pass_number; /* Parser pass number */
+ u8 return_object_type; /* Object type of the returned object */
+ u8 node_flags; /* Same as Node->Flags */
+ u8 flags; /* General flags */
};
/* Values for Flags above */
-#define ACPI_IGNORE_RETURN_VALUE 1
+#define ACPI_IGNORE_RETURN_VALUE 1
+
+/* Defines for return_flags field above */
+
+#define ACPI_OBJECT_REPAIRED 1
+#define ACPI_OBJECT_WRAPPED 2
/* Info used by acpi_ns_initialize_devices */
extern const char *acpi_gbl_pt_decode[];
#endif
+/*
+ * For the iASL compiler case, the output is redirected to stderr so that
+ * any of the various ACPI errors and warnings do not appear in the output
+ * files, for either the compiler or disassembler portions of the tool.
+ */
+#ifdef ACPI_ASL_COMPILER
+
+#include <stdio.h>
+extern FILE *acpi_gbl_output_file;
+
+#define ACPI_MSG_REDIRECT_BEGIN \
+ FILE *output_file = acpi_gbl_output_file; \
+ acpi_os_redirect_output (stderr);
+
+#define ACPI_MSG_REDIRECT_END \
+ acpi_os_redirect_output (output_file);
+
+#else
+/*
+ * non-iASL case - no redirection, nothing to do
+ */
+#define ACPI_MSG_REDIRECT_BEGIN
+#define ACPI_MSG_REDIRECT_END
+#endif
+
+/*
+ * Common error message prefixes
+ */
+#define ACPI_MSG_ERROR "ACPI Error: "
+#define ACPI_MSG_EXCEPTION "ACPI Exception: "
+#define ACPI_MSG_WARNING "ACPI Warning: "
+#define ACPI_MSG_INFO "ACPI: "
+
+#define ACPI_MSG_BIOS_ERROR "ACPI BIOS Error (bug): "
+#define ACPI_MSG_BIOS_WARNING "ACPI BIOS Warning (bug): "
+
+/*
+ * Common message suffix
+ */
+#define ACPI_MSG_SUFFIX \
+ acpi_os_printf (" (%8.8X/%s-%u)\n", ACPI_CA_VERSION, module_name, line_number)
+
/* Types for Resource descriptor entries */
#define ACPI_INVALID_RESOURCE 0
void ut_convert_backslashes(char *pathname);
-u8 acpi_ut_valid_acpi_name(u32 name);
+u8 acpi_ut_valid_acpi_name(char *name);
u8 acpi_ut_valid_acpi_char(char character, u32 position);
u32 line_number,
char *pathname, u8 node_flags, const char *format, ...);
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_predefined_bios_error(const char *module_name,
+ u32 line_number,
+ char *pathname,
+ u8 node_flags, const char *format, ...);
+
void
acpi_ut_namespace_error(const char *module_name,
u32 line_number,
switch (op->common.aml_opcode) {
case AML_WHILE_OP:
-
/*
* If this is an additional iteration of a while loop, continue.
* There is no need to allocate a new control state.
/*lint -fallthrough */
case AML_IF_OP:
-
/*
* IF/WHILE: Create a new control state to manage these
* constructs. We need to manage these as a stack, in order
break;
default:
+
break;
}
case AML_NOOP_OP:
/* Just do nothing! */
+
break;
case AML_BREAK_POINT_OP:
*/
switch (walk_state->opcode) {
case AML_FIELD_OP:
+
arg = acpi_ps_get_arg(op, 2);
type = ACPI_TYPE_LOCAL_REGION_FIELD;
break;
case AML_BANK_FIELD_OP:
+
arg = acpi_ps_get_arg(op, 4);
type = ACPI_TYPE_LOCAL_BANK_FIELD;
break;
case AML_INDEX_FIELD_OP:
+
arg = acpi_ps_get_arg(op, 3);
type = ACPI_TYPE_LOCAL_INDEX_FIELD;
break;
default:
+
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
break;
default:
+
break;
}
break;
default:
+
ACPI_ERROR((AE_INFO, "Type %u is invalid", type));
return_ACPI_STATUS(AE_TYPE);
}
return_ACPI_STATUS(AE_AML_UNINITIALIZED_ARG);
case ACPI_REFCLASS_LOCAL:
-
/*
* No error message for this case, will be trapped again later to
* detect and ignore cases of Store(local_x,local_x)
switch (obj_desc->common.type) {
case ACPI_TYPE_BUFFER:
-
/*
* Defer evaluation of Buffer term_arg operand
*/
break;
case ACPI_TYPE_PACKAGE:
-
/*
* Defer evaluation of Package term_arg operand
*/
break;
default:
+
ACPI_ERROR((AE_INFO, "Unknown Integer type 0x%X",
op_info->type));
status = AE_AML_OPERAND_TYPE;
break;
default:
+
return_ACPI_STATUS(AE_AML_BAD_OPCODE);
}
case AML_IF_OP:
case AML_WHILE_OP:
-
/*
* If we are executing the predicate AND this is the predicate op,
* we will use the return value
break;
default:
+
/* Ignore other control opcodes */
+
break;
}
goto result_not_used;
case AML_CLASS_CREATE:
-
/*
* These opcodes allow term_arg(s) as operands and therefore
* the operands can be method calls. The result is used.
goto result_not_used;
default:
-
/*
* In all other cases. the parent will actually use the return
* object, so keep it.
break;
default:
+
break;
}
break;
case AML_TYPE_METHOD_CALL:
-
/*
* If the method is referenced from within a package
* declaration, it is not a invocation of the method, just
switch (op->common.parent->common.aml_opcode) {
case AML_NAME_OP:
-
/*
* Put the Node on the object stack (Contains the ACPI Name
* of this object)
switch (pass_number) {
case 1:
+
walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
ACPI_PARSE_DELETE_TREE;
walk_state->descending_callback = acpi_ds_load1_begin_op;
break;
case 2:
+
walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
ACPI_PARSE_DELETE_TREE;
walk_state->descending_callback = acpi_ds_load2_begin_op;
break;
case 3:
+
#ifndef ACPI_NO_METHOD_EXECUTION
walk_state->parse_flags |= ACPI_PARSE_EXECUTE |
ACPI_PARSE_DELETE_TREE;
break;
default:
+
return (AE_BAD_PARAMETER);
}
switch (walk_state->opcode) {
case AML_SCOPE_OP:
-
/*
* The target name of the Scope() operator must exist at this point so
* that we can actually open the scope to enter new names underneath it.
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
-
/*
* These types we will allow, but we will change the type.
* This enables some existing code of the form:
break;
case ACPI_TYPE_METHOD:
-
/*
* Allow scope change to root during execution of module-level
* code. Root is typed METHOD during this time.
break;
default:
+
/* All NAMED_FIELD opcodes must be handled above */
break;
}
break;
default:
+
/* Unknown opcode */
status = AE_OK;
#endif /* ACPI_NO_METHOD_EXECUTION */
default:
+
/* All NAMED_COMPLEX opcodes must be handled above */
break;
}
break;
default:
+
break;
}
status = acpi_remove_fixed_event_handler(ACPI_EVENT_GLOBAL,
acpi_ev_global_lock_handler);
+ acpi_os_delete_lock(acpi_gbl_global_lock_pending_lock);
return_ACPI_STATUS(status);
}
switch (local_gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) {
case ACPI_GPE_DISPATCH_NOTIFY:
-
/*
* Implicit notify.
* Dispatch a DEVICE_WAKE notify to the appropriate handler.
(local_gpe_event_info->dispatch.
method_node)));
}
-
break;
default:
- return_VOID; /* Should never happen */
+
+ return_VOID; /* Should never happen */
}
/* Defer enabling of GPE until all notify handlers are done */
case ACPI_GPE_DISPATCH_METHOD:
case ACPI_GPE_DISPATCH_NOTIFY:
-
/*
* Execute the method associated with the GPE
* NOTE: Level-triggered GPEs are cleared after the method completes.
break;
default:
-
/*
* No handler or method to run!
* 03/2010: This case should no longer be possible. We will not allow
status = acpi_ev_install_gpe_block(gpe_block, interrupt_number);
if (ACPI_FAILURE(status)) {
+ ACPI_FREE(gpe_block->register_info);
+ ACPI_FREE(gpe_block->event_info);
ACPI_FREE(gpe_block);
return_ACPI_STATUS(status);
}
*/
switch (name[1]) {
case 'L':
+
type = ACPI_GPE_LEVEL_TRIGGERED;
break;
case 'E':
+
type = ACPI_GPE_EDGE_TRIGGERED;
break;
default:
+
/* Unknown method type, just ignore it */
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
switch (space_id) {
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+
handler = acpi_ex_system_memory_space_handler;
setup = acpi_ev_system_memory_region_setup;
break;
case ACPI_ADR_SPACE_SYSTEM_IO:
+
handler = acpi_ex_system_io_space_handler;
setup = acpi_ev_io_space_region_setup;
break;
case ACPI_ADR_SPACE_PCI_CONFIG:
+
handler = acpi_ex_pci_config_space_handler;
setup = acpi_ev_pci_config_region_setup;
break;
case ACPI_ADR_SPACE_CMOS:
+
handler = acpi_ex_cmos_space_handler;
setup = acpi_ev_cmos_region_setup;
break;
case ACPI_ADR_SPACE_PCI_BAR_TARGET:
+
handler = acpi_ex_pci_bar_space_handler;
setup = acpi_ev_pci_bar_region_setup;
break;
case ACPI_ADR_SPACE_DATA_TABLE:
+
handler = acpi_ex_data_table_space_handler;
setup = NULL;
break;
default:
+
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
return (TRUE);
default:
+
return (FALSE);
}
}
ACPI_ERROR((AE_INFO,
"Could not remove Global Lock handler"));
}
+
+ acpi_gbl_events_initialized = FALSE;
}
/* Deallocate all handler objects installed within GPE info structs */
/* Local prototypes */
-static void acpi_ev_orphan_ec_reg_method(void);
+static void
+acpi_ev_orphan_ec_reg_method(struct acpi_namespace_node *ec_device_node);
static acpi_status
acpi_ev_reg_run(acpi_handle obj_handle,
}
info->prefix_node = region_obj2->extra.method_REG;
- info->pathname = NULL;
+ info->relative_pathname = NULL;
info->parameters = args;
info->flags = ACPI_IGNORE_RETURN_VALUE;
/* Special case for EC: handle "orphan" _REG methods with no region */
if (space_id == ACPI_ADR_SPACE_EC) {
- acpi_ev_orphan_ec_reg_method();
+ acpi_ev_orphan_ec_reg_method(node);
}
return_ACPI_STATUS(status);
*
* FUNCTION: acpi_ev_orphan_ec_reg_method
*
- * PARAMETERS: None
+ * PARAMETERS: ec_device_node - Namespace node for an EC device
*
* RETURN: None
*
* detected by providing a _REG method object underneath the
* Embedded Controller device."
*
- * To quickly access the EC device, we use the EC_ID that appears
- * within the ECDT. Otherwise, we would need to perform a time-
- * consuming namespace walk, executing _HID methods to find the
- * EC device.
+ * To quickly access the EC device, we use the ec_device_node used
+ * during EC handler installation. Otherwise, we would need to
+ * perform a time consuming namespace walk, executing _HID
+ * methods to find the EC device.
+ *
+ * MUTEX: Assumes the namespace is locked
*
******************************************************************************/
-static void acpi_ev_orphan_ec_reg_method(void)
+static void
+acpi_ev_orphan_ec_reg_method(struct acpi_namespace_node *ec_device_node)
{
- struct acpi_table_ecdt *table;
+ acpi_handle reg_method;
+ struct acpi_namespace_node *next_node;
acpi_status status;
struct acpi_object_list args;
union acpi_object objects[2];
- struct acpi_namespace_node *ec_device_node;
- struct acpi_namespace_node *reg_method;
- struct acpi_namespace_node *next_node;
ACPI_FUNCTION_TRACE(ev_orphan_ec_reg_method);
- /* Get the ECDT (if present in system) */
-
- status = acpi_get_table(ACPI_SIG_ECDT, 0,
- ACPI_CAST_INDIRECT_PTR(struct acpi_table_header,
- &table));
- if (ACPI_FAILURE(status)) {
- return_VOID;
- }
-
- /* We need a valid EC_ID string */
-
- if (!(*table->id)) {
+ if (!ec_device_node) {
return_VOID;
}
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- /* Get a handle to the EC device referenced in the ECDT */
-
- status = acpi_get_handle(NULL,
- ACPI_CAST_PTR(char, table->id),
- ACPI_CAST_PTR(acpi_handle, &ec_device_node));
- if (ACPI_FAILURE(status)) {
- goto exit;
- }
-
/* Get a handle to a _REG method immediately under the EC device */
- status = acpi_get_handle(ec_device_node,
- METHOD_NAME__REG, ACPI_CAST_PTR(acpi_handle,
- ®_method));
+ status = acpi_get_handle(ec_device_node, METHOD_NAME__REG, ®_method);
if (ACPI_FAILURE(status)) {
- goto exit;
+ goto exit; /* There is no _REG method present */
}
/*
* this scope with the Embedded Controller space ID. Otherwise, it
* will already have been executed. Note, this allows for Regions
* with other space IDs to be present; but the code below will then
- * execute the _REG method with the EC space ID argument.
+ * execute the _REG method with the embedded_control space_ID argument.
*/
next_node = acpi_ns_get_next_node(ec_device_node, NULL);
while (next_node) {
if ((next_node->type == ACPI_TYPE_REGION) &&
(next_node->object) &&
(next_node->object->region.space_id == ACPI_ADR_SPACE_EC)) {
- goto exit; /* Do not execute _REG */
+ goto exit; /* Do not execute the _REG */
}
+
next_node = acpi_ns_get_next_node(ec_device_node, next_node);
}
- /* Evaluate the _REG(EC,Connect) method */
+ /* Evaluate the _REG(embedded_control,Connect) method */
args.count = 2;
args.pointer = objects;
break;
default:
+
/* Ignore other objects */
+
break;
}
switch (action) {
case ACPI_GPE_ENABLE:
+
ACPI_SET_BIT(gpe_register_info->enable_for_wake,
(u8)register_bit);
break;
case ACPI_GPE_DISABLE:
+
ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake,
(u8)register_bit);
break;
default:
+
ACPI_ERROR((AE_INFO, "%u, Invalid action", action));
status = AE_BAD_PARAMETER;
break;
break;
default:
+
break;
}
break;
default:
+
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
(ACPI_GET_DESCRIPTOR_TYPE(ddb_handle) != ACPI_DESC_TYPE_OPERAND) ||
(ddb_handle->common.type != ACPI_TYPE_LOCAL_REFERENCE) ||
(!(ddb_handle->common.flags & AOPOBJ_DATA_VALID))) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/* Get the table index from the ddb_handle */
break;
default:
+
return_ACPI_STATUS(AE_TYPE);
}
switch (obj_desc->common.type) {
case ACPI_TYPE_STRING:
-
/*
* Convert string to an integer - for most cases, the string must be
* hexadecimal as per the ACPI specification. The only exception (as
default:
/* No other types can get here */
+
break;
}
return_ACPI_STATUS(AE_OK);
case ACPI_TYPE_INTEGER:
-
/*
* Create a new Buffer object.
* Need enough space for one integer
break;
case ACPI_TYPE_STRING:
-
/*
* Create a new Buffer object
* Size will be the string length
break;
default:
+
return_ACPI_STATUS(AE_TYPE);
}
switch (data_width) {
case 1:
+
decimal_length = ACPI_MAX8_DECIMAL_DIGITS;
break;
case 4:
+
decimal_length = ACPI_MAX32_DECIMAL_DIGITS;
break;
case 8:
default:
+
decimal_length = ACPI_MAX64_DECIMAL_DIGITS;
break;
}
break;
default:
+
return_ACPI_STATUS(AE_TYPE);
}
break;
default:
+
/* No conversion allowed for these types */
if (destination_type != source_desc->common.type) {
break;
default:
+
ACPI_ERROR((AE_INFO,
"Bad destination type during conversion: 0x%X",
destination_type));
break;
default:
+
ACPI_ERROR((AE_INFO,
"Unknown Target type ID 0x%X AmlOpcode 0x%X DestType %s",
GET_CURRENT_ARG_TYPE(walk_state->op_info->
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_PACKAGE:
case ACPI_TYPE_BUFFER_FIELD:
-
/*
* These types open a new scope, so we need the NS node in order to access
* any children.
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_LOCAL_SCOPE:
-
/*
* The new alias has the type ALIAS and points to the original
* NS node, not the object itself.
break;
case ACPI_TYPE_METHOD:
-
/*
* Control method aliases need to be differentiated
*/
return_VOID;
default:
+
break;
}
break;
default:
+
acpi_ex_do_debug_object((source_desc->
reference.
node)->object,
switch (info->opcode) {
case ACPI_EXD_INIT:
+
break;
case ACPI_EXD_TYPE:
break;
default:
+
/* Unknown Type */
acpi_os_printf("Unknown Type %X\n", obj_desc->common.type);
switch (source_desc->common.type) {
case ACPI_TYPE_INTEGER:
+
buffer = &source_desc->integer.value;
length = sizeof(source_desc->integer.value);
break;
case ACPI_TYPE_BUFFER:
+
buffer = source_desc->buffer.pointer;
length = source_desc->buffer.length;
break;
case ACPI_TYPE_STRING:
+
buffer = source_desc->string.pointer;
length = source_desc->string.length;
break;
default:
+
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
-
/*
* Ensure that the bank_value is not beyond the capacity of
* the register
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
-
/*
* Ensure that the index_value is not beyond the capacity of
* the register
break;
case ACPI_DESC_TYPE_NAMED:
-
/*
* A named reference that has already been resolved to a Node
*/
*/
switch (operand0->common.type) {
case ACPI_TYPE_INTEGER:
+
status =
acpi_ex_convert_to_integer(operand1, &local_operand1, 16);
break;
case ACPI_TYPE_STRING:
+
status = acpi_ex_convert_to_string(operand1, &local_operand1,
ACPI_IMPLICIT_CONVERT_HEX);
break;
case ACPI_TYPE_BUFFER:
+
status = acpi_ex_convert_to_buffer(operand1, &local_operand1);
break;
default:
+
ACPI_ERROR((AE_INFO, "Invalid object type: 0x%X",
operand0->common.type));
status = AE_AML_INTERNAL;
break;
default:
+
status = AE_AML_INTERNAL;
break;
}
*/
switch (operand0->common.type) {
case ACPI_TYPE_INTEGER:
+
status =
acpi_ex_convert_to_integer(operand1, &local_operand1, 16);
break;
case ACPI_TYPE_STRING:
+
status = acpi_ex_convert_to_string(operand1, &local_operand1,
ACPI_IMPLICIT_CONVERT_HEX);
break;
case ACPI_TYPE_BUFFER:
+
status = acpi_ex_convert_to_buffer(operand1, &local_operand1);
break;
default:
+
status = AE_AML_INTERNAL;
break;
}
break;
default:
+
status = AE_AML_INTERNAL;
break;
}
break;
default:
+
status = AE_AML_INTERNAL;
break;
}
break;
case AML_FROM_BCD_OP: /* from_bcd (BCDValue, Result) */
-
/*
* The 64-bit ACPI integer can hold 16 4-bit BCD characters
* (if table is 32-bit, integer can hold 8 BCD characters)
break;
case AML_COND_REF_OF_OP: /* cond_ref_of (source_object, Result) */
-
/*
* This op is a little strange because the internal return value is
* different than the return value stored in the result descriptor
goto cleanup;
default:
+
/* No other opcodes get here */
+
break;
}
break;
case AML_STORE_OP: /* Store (Source, Target) */
-
/*
* A store operand is typically a number, string, buffer or lvalue
* Be careful about deleting the source object,
case AML_DECREMENT_OP: /* Decrement (Operand) */
case AML_INCREMENT_OP: /* Increment (Operand) */
-
/*
* Create a new integer. Can't just get the base integer and
* increment it because it may be an Arg or Field.
break;
case AML_TYPE_OP: /* object_type (source_object) */
-
/*
* Note: The operand is not resolved at this point because we want to
* get the associated object, not its value. For example, we don't
break;
case AML_SIZE_OF_OP: /* size_of (source_object) */
-
/*
* Note: The operand is not resolved at this point because we want to
* get the associated object, not its value.
*/
switch (type) {
case ACPI_TYPE_INTEGER:
+
value = acpi_gbl_integer_byte_width;
break;
case ACPI_TYPE_STRING:
+
value = temp_desc->string.length;
break;
break;
default:
+
ACPI_ERROR((AE_INFO,
"Operand must be Buffer/Integer/String/Package - found type %s",
acpi_ut_get_type_name(type)));
break;
case ACPI_TYPE_STRING:
+
break;
default:
+
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
*/
switch (operand[0]->reference.class) {
case ACPI_REFCLASS_INDEX:
-
/*
* The target type for the Index operator must be
* either a Buffer or a Package
break;
case ACPI_TYPE_PACKAGE:
-
/*
* Return the referenced element of the package. We must
* add another reference to the referenced object, however.
break;
default:
+
ACPI_ERROR((AE_INFO,
"Unknown class in reference(%p) - 0x%2.2X",
operand[0],
break;
case AML_TO_STRING_OP: /* to_string (Buffer, Length, Result) (ACPI 2.0) */
-
/*
* Input object is guaranteed to be a buffer at this point (it may have
* been converted.) Copy the raw buffer data to a new object of
switch (walk_state->opcode) {
case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */
-
/*
* Create the return object. The Source operand is guaranteed to be
* either a String or a Buffer, so just use its type.
break;
case MATCH_MEQ:
-
/*
* True if equal: (P[i] == M)
* Change to: (M == P[i])
break;
case MATCH_MLE:
-
/*
* True if less than or equal: (P[i] <= M) (P[i] not_greater than M)
* Change to: (M >= P[i]) (M not_less than P[i])
break;
case MATCH_MLT:
-
/*
* True if less than: (P[i] < M)
* Change to: (M > P[i])
break;
case MATCH_MGE:
-
/*
* True if greater than or equal: (P[i] >= M) (P[i] not_less than M)
* Change to: (M <= P[i]) (M not_greater than P[i])
break;
case MATCH_MGT:
-
/*
* True if greater than: (P[i] > M)
* Change to: (M < P[i])
case AML_FIELD_ACCESS_BYTE:
case AML_FIELD_ACCESS_BUFFER: /* ACPI 2.0 (SMBus Buffer) */
+
byte_alignment = 1;
bit_length = 8;
break;
case AML_FIELD_ACCESS_WORD:
+
byte_alignment = 2;
bit_length = 16;
break;
case AML_FIELD_ACCESS_DWORD:
+
byte_alignment = 4;
bit_length = 32;
break;
case AML_FIELD_ACCESS_QWORD: /* ACPI 2.0 */
+
byte_alignment = 8;
bit_length = 64;
break;
default:
+
/* Invalid field access type */
ACPI_ERROR((AE_INFO, "Unknown field access type 0x%X", access));
break;
default:
+
/* No other types should get here */
+
break;
}
switch (bit_width) {
case 8:
+
length = 1;
break;
case 16:
+
length = 2;
break;
case 32:
+
length = 4;
break;
case 64:
+
length = 8;
break;
default:
+
ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %u",
bit_width));
return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
*value = 0;
switch (bit_width) {
case 8:
- *value = (u64) ACPI_GET8(logical_addr_ptr);
+
+ *value = (u64)ACPI_GET8(logical_addr_ptr);
break;
case 16:
- *value = (u64) ACPI_GET16(logical_addr_ptr);
+
+ *value = (u64)ACPI_GET16(logical_addr_ptr);
break;
case 32:
- *value = (u64) ACPI_GET32(logical_addr_ptr);
+
+ *value = (u64)ACPI_GET32(logical_addr_ptr);
break;
case 64:
- *value = (u64) ACPI_GET64(logical_addr_ptr);
+
+ *value = (u64)ACPI_GET64(logical_addr_ptr);
break;
default:
+
/* bit_width was already validated */
+
break;
}
break;
switch (bit_width) {
case 8:
+
ACPI_SET8(logical_addr_ptr, *value);
break;
case 16:
+
ACPI_SET16(logical_addr_ptr, *value);
break;
case 32:
+
ACPI_SET32(logical_addr_ptr, *value);
break;
case 64:
+
ACPI_SET64(logical_addr_ptr, *value);
break;
default:
+
/* bit_width was already validated */
+
break;
}
break;
default:
+
status = AE_BAD_PARAMETER;
break;
}
break;
default:
+
status = AE_BAD_PARAMETER;
break;
}
break;
default:
+
/* No named references are allowed here */
ACPI_ERROR((AE_INFO,
switch (ref_type) {
case ACPI_REFCLASS_LOCAL:
case ACPI_REFCLASS_ARG:
-
/*
* Get the local from the method's state info
* Note: this increments the local's object reference count
break;
default:
+
break;
}
switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
case ACPI_DESC_TYPE_OPERAND:
+
type = obj_desc->common.type;
break;
case ACPI_DESC_TYPE_NAMED:
+
type = ((struct acpi_namespace_node *)obj_desc)->type;
obj_desc =
acpi_ns_get_attached_object((struct acpi_namespace_node *)
break;
default:
+
/* No change to Type required */
+
break;
}
case ARGI_TARGETREF: /* Allows implicit conversion rules before store */
case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */
case ARGI_SIMPLE_TARGET: /* Name, Local, or arg - no implicit conversion */
-
/*
* Need an operand of type ACPI_TYPE_LOCAL_REFERENCE
* A Namespace Node is OK as-is
goto next_operand;
case ARGI_DATAREFOBJ: /* Store operator only */
-
/*
* We don't want to resolve index_op reference objects during
* a store because this would be an implicit de_ref_of operation.
break;
default:
+
/* All cases covered above */
+
break;
}
goto next_operand;
case ARGI_BUFFER:
-
/*
* Need an operand of type ACPI_TYPE_BUFFER,
* But we can implicitly convert from a STRING or INTEGER
goto next_operand;
case ARGI_STRING:
-
/*
* Need an operand of type ACPI_TYPE_STRING,
* But we can implicitly convert from a BUFFER or INTEGER
break;
default:
+
ACPI_ERROR((AE_INFO,
"Needed [Buffer/String/Package/Reference], found [%s] %p",
acpi_ut_get_object_type_name
break;
default:
+
ACPI_ERROR((AE_INFO,
"Needed [Buffer/String/Package], found [%s] %p",
acpi_ut_get_object_type_name
break;
default:
+
ACPI_ERROR((AE_INFO,
"Needed [Region/Buffer], found [%s] %p",
acpi_ut_get_object_type_name
switch (dest_desc->common.type) {
case ACPI_TYPE_LOCAL_REFERENCE:
+
break;
case ACPI_TYPE_INTEGER:
break;
case ACPI_REFCLASS_DEBUG:
-
/*
* Storing to the Debug object causes the value stored to be
* displayed and otherwise has no effect -- see ACPI Specification
break;
case ACPI_TYPE_BUFFER_FIELD:
-
/*
* Store into a Buffer or String (not actually a real buffer_field)
* at a location defined by an Index.
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
-
/*
* These target types are all of type Integer/String/Buffer, and
* therefore support implicit conversion before the store.
* These cases all require only Integers or values that
* can be converted to Integers (Strings or Buffers)
*/
-
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
-
/*
* Stores into a Field/Region or into a Integer/Buffer/String
* are all essentially the same. This case handles the
case ACPI_TYPE_LOCAL_ALIAS:
case ACPI_TYPE_LOCAL_METHOD_ALIAS:
-
/*
* All aliases should have been resolved earlier, during the
* operand resolution phase.
case ACPI_TYPE_PACKAGE:
default:
-
/*
* All other types than Alias and the various Fields come here,
* including the untyped case - ACPI_TYPE_ANY.
break;
case ACPI_SYS_MODE_LEGACY:
-
/*
* BIOS should clear all fixed status bits and restore fixed event
* enable bits to default
break;
default:
+
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*lint -fallthrough */
case ACPI_GPE_ENABLE:
+
ACPI_SET_BIT(enable_mask, register_bit);
break;
case ACPI_GPE_DISABLE:
+
ACPI_CLEAR_BIT(enable_mask, register_bit);
break;
default:
+
ACPI_ERROR((AE_INFO, "Invalid GPE Action, %u", action));
return (AE_BAD_PARAMETER);
}
break;
default:
+
ACPI_ERROR((AE_INFO, "Unknown Register ID: 0x%X", register_id));
status = AE_BAD_PARAMETER;
break;
break;
case ACPI_REGISTER_PM1_CONTROL: /* PM1 A/B: 16-bit access each */
-
/*
* Perform a read first to preserve certain bits (per ACPI spec)
* Note: This includes SCI_EN, we never want to change this bit
break;
case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
-
/*
* For control registers, all reserved bits must be preserved,
* as per the ACPI spec.
break;
default:
+
ACPI_ERROR((AE_INFO, "Unknown Register ID: 0x%X", register_id));
status = AE_BAD_PARAMETER;
break;
* Evaluate the \_Sx namespace object containing the register values
* for this state
*/
- info->pathname =
+ info->relative_pathname =
ACPI_CAST_PTR(char, acpi_gbl_sleep_state_names[sleep_state]);
status = acpi_ns_evaluate(info);
if (ACPI_FAILURE(status)) {
if (!info->return_object) {
ACPI_ERROR((AE_INFO, "No Sleep State object returned from [%s]",
- info->pathname));
+ info->relative_pathname));
status = AE_AML_NO_RETURN_VALUE;
goto cleanup;
}
elements = info->return_object->package.elements;
switch (info->return_object->package.count) {
case 0:
+
status = AE_AML_PACKAGE_LIMIT;
break;
case 1:
+
if (elements[0]->common.type != ACPI_TYPE_INTEGER) {
status = AE_AML_OPERAND_TYPE;
break;
case 2:
default:
+
if ((elements[0]->common.type != ACPI_TYPE_INTEGER) ||
(elements[1]->common.type != ACPI_TYPE_INTEGER)) {
status = AE_AML_OPERAND_TYPE;
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"While evaluating Sleep State [%s]",
- info->pathname));
+ info->relative_pathname));
}
ACPI_FREE(info);
&acpi_sleep_dispatch[function_id];
#if (!ACPI_REDUCED_HARDWARE)
-
/*
* If the Hardware Reduced flag is set (from the FADT), we must
- * use the extended sleep registers
+ * use the extended sleep registers (FADT). Note: As per the ACPI
+ * specification, these extended registers are to be used for HW-reduced
+ * platforms only. They are not general-purpose replacements for the
+ * legacy PM register sleep support.
*/
- if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) {
+ if (acpi_gbl_reduced_hardware) {
status = sleep_functions->extended_function(sleep_state);
} else {
/* Legacy sleep */
switch (sleep_state) {
case ACPI_STATE_S0:
+
sst_value = ACPI_SST_WORKING;
break;
case ACPI_STATE_S1:
case ACPI_STATE_S2:
case ACPI_STATE_S3:
+
sst_value = ACPI_SST_SLEEPING;
break;
case ACPI_STATE_S4:
+
sst_value = ACPI_SST_SLEEP_CONTEXT;
break;
default:
+
sst_value = ACPI_SST_INDICATOR_OFF; /* Default is off */
break;
}
*/
switch (init_val->type) {
case ACPI_TYPE_METHOD:
+
obj_desc->method.param_count =
(u8) ACPI_TO_INTEGER(val);
obj_desc->common.flags |= AOPOBJ_DATA_VALID;
--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: nsarguments - Validation of args for ACPI predefined methods
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acpredef.h"
+
+#define _COMPONENT ACPI_NAMESPACE
+ACPI_MODULE_NAME("nsarguments")
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_argument_types
+ *
+ * PARAMETERS: info - Method execution information block
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Check the incoming argument count and all argument types
+ * against the argument type list for a predefined name.
+ *
+ ******************************************************************************/
+void acpi_ns_check_argument_types(struct acpi_evaluate_info *info)
+{
+ u16 arg_type_list;
+ u8 arg_count;
+ u8 arg_type;
+ u8 user_arg_type;
+ u32 i;
+
+ /* If not a predefined name, cannot typecheck args */
+
+ if (!info->predefined) {
+ return;
+ }
+
+ arg_type_list = info->predefined->info.argument_list;
+ arg_count = METHOD_GET_ARG_COUNT(arg_type_list);
+
+ /* Typecheck all arguments */
+
+ for (i = 0; ((i < arg_count) && (i < info->param_count)); i++) {
+ arg_type = METHOD_GET_NEXT_TYPE(arg_type_list);
+ user_arg_type = info->parameters[i]->common.type;
+
+ if (user_arg_type != arg_type) {
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ ACPI_WARN_ALWAYS,
+ "Argument #%u type mismatch - "
+ "Found [%s], ACPI requires [%s]",
+ (i + 1),
+ acpi_ut_get_type_name
+ (user_arg_type),
+ acpi_ut_get_type_name(arg_type)));
+ }
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_acpi_compliance
+ *
+ * PARAMETERS: pathname - Full pathname to the node (for error msgs)
+ * node - Namespace node for the method/object
+ * predefined - Pointer to entry in predefined name table
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Check that the declared parameter count (in ASL/AML) for a
+ * predefined name is what is expected (matches what is defined in
+ * the ACPI specification for this predefined name.)
+ *
+ ******************************************************************************/
+
+void
+acpi_ns_check_acpi_compliance(char *pathname,
+ struct acpi_namespace_node *node,
+ const union acpi_predefined_info *predefined)
+{
+ u32 aml_param_count;
+ u32 required_param_count;
+
+ if (!predefined) {
+ return;
+ }
+
+ /* Get the ACPI-required arg count from the predefined info table */
+
+ required_param_count =
+ METHOD_GET_ARG_COUNT(predefined->info.argument_list);
+
+ /*
+ * If this object is not a control method, we can check if the ACPI
+ * spec requires that it be a method.
+ */
+ if (node->type != ACPI_TYPE_METHOD) {
+ if (required_param_count > 0) {
+
+ /* Object requires args, must be implemented as a method */
+
+ ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Object (%s) must be a control method with %u arguments",
+ acpi_ut_get_type_name(node->
+ type),
+ required_param_count));
+ } else if (!required_param_count
+ && !predefined->info.expected_btypes) {
+
+ /* Object requires no args and no return value, must be a method */
+
+ ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Object (%s) must be a control method "
+ "with no arguments and no return value",
+ acpi_ut_get_type_name(node->
+ type)));
+ }
+
+ return;
+ }
+
+ /*
+ * This is a control method.
+ * Check that the ASL/AML-defined parameter count for this method
+ * matches the ACPI-required parameter count
+ *
+ * Some methods are allowed to have a "minimum" number of args (_SCP)
+ * because their definition in ACPI has changed over time.
+ *
+ * Note: These are BIOS errors in the declaration of the object
+ */
+ aml_param_count = node->object->method.param_count;
+
+ if (aml_param_count < required_param_count) {
+ ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
+ "Insufficient arguments - "
+ "ASL declared %u, ACPI requires %u",
+ aml_param_count,
+ required_param_count));
+ } else if ((aml_param_count > required_param_count)
+ && !(predefined->info.
+ argument_list & ARG_COUNT_IS_MINIMUM)) {
+ ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
+ "Excess arguments - "
+ "ASL declared %u, ACPI requires %u",
+ aml_param_count,
+ required_param_count));
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_argument_count
+ *
+ * PARAMETERS: pathname - Full pathname to the node (for error msgs)
+ * node - Namespace node for the method/object
+ * user_param_count - Number of args passed in by the caller
+ * predefined - Pointer to entry in predefined name table
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Check that incoming argument count matches the declared
+ * parameter count (in the ASL/AML) for an object.
+ *
+ ******************************************************************************/
+
+void
+acpi_ns_check_argument_count(char *pathname,
+ struct acpi_namespace_node *node,
+ u32 user_param_count,
+ const union acpi_predefined_info *predefined)
+{
+ u32 aml_param_count;
+ u32 required_param_count;
+
+ if (!predefined) {
+ /*
+ * Not a predefined name. Check the incoming user argument count
+ * against the count that is specified in the method/object.
+ */
+ if (node->type != ACPI_TYPE_METHOD) {
+ if (user_param_count) {
+ ACPI_INFO_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "%u arguments were passed to a non-method ACPI object (%s)",
+ user_param_count,
+ acpi_ut_get_type_name
+ (node->type)));
+ }
+
+ return;
+ }
+
+ /*
+ * This is a control method. Check the parameter count.
+ * We can only check the incoming argument count against the
+ * argument count declared for the method in the ASL/AML.
+ *
+ * Emit a message if too few or too many arguments have been passed
+ * by the caller.
+ *
+ * Note: Too many arguments will not cause the method to
+ * fail. However, the method will fail if there are too few
+ * arguments and the method attempts to use one of the missing ones.
+ */
+ aml_param_count = node->object->method.param_count;
+
+ if (user_param_count < aml_param_count) {
+ ACPI_WARN_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Insufficient arguments - "
+ "Caller passed %u, method requires %u",
+ user_param_count,
+ aml_param_count));
+ } else if (user_param_count > aml_param_count) {
+ ACPI_INFO_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Excess arguments - "
+ "Caller passed %u, method requires %u",
+ user_param_count,
+ aml_param_count));
+ }
+
+ return;
+ }
+
+ /*
+ * This is a predefined name. Validate the user-supplied parameter
+ * count against the ACPI specification. We don't validate against
+ * the method itself because what is important here is that the
+ * caller is in conformance with the spec. (The arg count for the
+ * method was checked against the ACPI spec earlier.)
+ *
+ * Some methods are allowed to have a "minimum" number of args (_SCP)
+ * because their definition in ACPI has changed over time.
+ */
+ required_param_count =
+ METHOD_GET_ARG_COUNT(predefined->info.argument_list);
+
+ if (user_param_count < required_param_count) {
+ ACPI_WARN_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
+ "Insufficient arguments - "
+ "Caller passed %u, ACPI requires %u",
+ user_param_count, required_param_count));
+ } else if ((user_param_count > required_param_count) &&
+ !(predefined->info.argument_list & ARG_COUNT_IS_MINIMUM)) {
+ ACPI_INFO_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
+ "Excess arguments - "
+ "Caller passed %u, ACPI requires %u",
+ user_param_count, required_param_count));
+ }
+}
break;
default:
+
return (AE_AML_OPERAND_TYPE);
}
break;
default:
+
return (AE_AML_OPERAND_TYPE);
}
break;
default:
+
return (AE_AML_OPERAND_TYPE);
}
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_METHOD:
+
acpi_os_printf("<No attached object>");
break;
default:
+
break;
}
break;
default:
+
break;
}
break;
goto cleanup;
case ACPI_TYPE_BUFFER_FIELD:
+
obj_desc =
(union acpi_operand_object *)obj_desc->buffer_field.
buffer_obj;
break;
case ACPI_TYPE_PACKAGE:
+
obj_desc = (void *)obj_desc->package.elements;
break;
case ACPI_TYPE_METHOD:
+
obj_desc = (void *)obj_desc->method.aml_start;
break;
case ACPI_TYPE_LOCAL_REGION_FIELD:
+
obj_desc = (void *)obj_desc->field.region_obj;
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
+
obj_desc = (void *)obj_desc->bank_field.region_obj;
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
+
obj_desc = (void *)obj_desc->index_field.index_obj;
break;
default:
+
goto cleanup;
}
*
* PARAMETERS: info - Evaluation info block, contains:
* prefix_node - Prefix or Method/Object Node to execute
- * pathname - Name of method to execute, If NULL, the
+ * relative_path - Name of method to execute, If NULL, the
* Node is the object to execute
* parameters - List of parameters to pass to the method,
* terminated by NULL. Params itself may be
*
******************************************************************************/
-acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
+acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info)
{
acpi_status status;
- struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(ns_evaluate);
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- /* Initialize the return value to an invalid object */
-
- info->return_object = NULL;
- info->param_count = 0;
-
- if (!info->resolved_node) {
+ if (!info->node) {
/*
- * Get the actual namespace node for the target object if we need to.
- * Handles these cases:
+ * Get the actual namespace node for the target object if we
+ * need to. Handles these cases:
*
- * 1) Null node, Pathname (absolute path)
- * 2) Node, Pathname (path relative to Node)
- * 3) Node, Null Pathname
+ * 1) Null node, valid pathname from root (absolute path)
+ * 2) Node and valid pathname (path relative to Node)
+ * 3) Node, Null pathname
*/
- status = acpi_ns_get_node(info->prefix_node, info->pathname,
- ACPI_NS_NO_UPSEARCH,
- &info->resolved_node);
+ status =
+ acpi_ns_get_node(info->prefix_node, info->relative_pathname,
+ ACPI_NS_NO_UPSEARCH, &info->node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
- * For a method alias, we must grab the actual method node so that proper
- * scoping context will be established before execution.
+ * For a method alias, we must grab the actual method node so that
+ * proper scoping context will be established before execution.
*/
- if (acpi_ns_get_type(info->resolved_node) ==
- ACPI_TYPE_LOCAL_METHOD_ALIAS) {
- info->resolved_node =
+ if (acpi_ns_get_type(info->node) == ACPI_TYPE_LOCAL_METHOD_ALIAS) {
+ info->node =
ACPI_CAST_PTR(struct acpi_namespace_node,
- info->resolved_node->object);
+ info->node->object);
+ }
+
+ /* Complete the info block initialization */
+
+ info->return_object = NULL;
+ info->node_flags = info->node->flags;
+ info->obj_desc = acpi_ns_get_attached_object(info->node);
+
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n",
+ info->relative_pathname, info->node,
+ acpi_ns_get_attached_object(info->node)));
+
+ /* Get info if we have a predefined name (_HID, etc.) */
+
+ info->predefined =
+ acpi_ut_match_predefined_method(info->node->name.ascii);
+
+ /* Get the full pathname to the object, for use in warning messages */
+
+ info->full_pathname = acpi_ns_get_external_pathname(info->node);
+ if (!info->full_pathname) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
- ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n", info->pathname,
- info->resolved_node,
- acpi_ns_get_attached_object(info->resolved_node)));
+ /* Count the number of arguments being passed in */
+
+ info->param_count = 0;
+ if (info->parameters) {
+ while (info->parameters[info->param_count]) {
+ info->param_count++;
+ }
+
+ /* Warn on impossible argument count */
+
+ if (info->param_count > ACPI_METHOD_NUM_ARGS) {
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ ACPI_WARN_ALWAYS,
+ "Excess arguments (%u) - using only %u",
+ info->param_count,
+ ACPI_METHOD_NUM_ARGS));
+
+ info->param_count = ACPI_METHOD_NUM_ARGS;
+ }
+ }
+
+ /*
+ * For predefined names: Check that the declared argument count
+ * matches the ACPI spec -- otherwise this is a BIOS error.
+ */
+ acpi_ns_check_acpi_compliance(info->full_pathname, info->node,
+ info->predefined);
+
+ /*
+ * For all names: Check that the incoming argument count for
+ * this method/object matches the actual ASL/AML definition.
+ */
+ acpi_ns_check_argument_count(info->full_pathname, info->node,
+ info->param_count, info->predefined);
- node = info->resolved_node;
+ /* For predefined names: Typecheck all incoming arguments */
+
+ acpi_ns_check_argument_types(info);
/*
- * Two major cases here:
+ * Three major evaluation cases:
*
- * 1) The object is a control method -- execute it
- * 2) The object is not a method -- just return it's current value
+ * 1) Object types that cannot be evaluated by definition
+ * 2) The object is a control method -- execute it
+ * 3) The object is not a method -- just return it's current value
*/
- if (acpi_ns_get_type(info->resolved_node) == ACPI_TYPE_METHOD) {
+ switch (acpi_ns_get_type(info->node)) {
+ case ACPI_TYPE_DEVICE:
+ case ACPI_TYPE_EVENT:
+ case ACPI_TYPE_MUTEX:
+ case ACPI_TYPE_REGION:
+ case ACPI_TYPE_THERMAL:
+ case ACPI_TYPE_LOCAL_SCOPE:
+ /*
+ * 1) Disallow evaluation of certain object types. For these,
+ * object evaluation is undefined and not supported.
+ */
+ ACPI_ERROR((AE_INFO,
+ "%s: Evaluation of object type [%s] is not supported",
+ info->full_pathname,
+ acpi_ut_get_type_name(info->node->type)));
+
+ status = AE_TYPE;
+ goto cleanup;
+
+ case ACPI_TYPE_METHOD:
/*
- * 1) Object is a control method - execute it
+ * 2) Object is a control method - execute it
*/
/* Verify that there is a method object associated with this node */
- info->obj_desc =
- acpi_ns_get_attached_object(info->resolved_node);
if (!info->obj_desc) {
ACPI_ERROR((AE_INFO,
- "Control method has no attached sub-object"));
- return_ACPI_STATUS(AE_NULL_OBJECT);
+ "%s: Method has no attached sub-object",
+ info->full_pathname));
+ status = AE_NULL_OBJECT;
+ goto cleanup;
}
- /* Count the number of arguments being passed to the method */
-
- if (info->parameters) {
- while (info->parameters[info->param_count]) {
- if (info->param_count > ACPI_METHOD_MAX_ARG) {
- return_ACPI_STATUS(AE_LIMIT);
- }
- info->param_count++;
- }
- }
-
-
- ACPI_DUMP_PATHNAME(info->resolved_node, "ACPI: Execute Method",
- ACPI_LV_INFO, _COMPONENT);
-
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
- "Method at AML address %p Length %X\n",
+ "**** Execute method [%s] at AML address %p length %X\n",
+ info->full_pathname,
info->obj_desc->method.aml_start + 1,
info->obj_desc->method.aml_length - 1));
acpi_ex_enter_interpreter();
status = acpi_ps_execute_method(info);
acpi_ex_exit_interpreter();
- } else {
+ break;
+
+ default:
/*
- * 2) Object is not a method, return its current value
- *
- * Disallow certain object types. For these, "evaluation" is undefined.
+ * 3) All other non-method objects -- get the current object value
*/
- switch (info->resolved_node->type) {
- case ACPI_TYPE_DEVICE:
- case ACPI_TYPE_EVENT:
- case ACPI_TYPE_MUTEX:
- case ACPI_TYPE_REGION:
- case ACPI_TYPE_THERMAL:
- case ACPI_TYPE_LOCAL_SCOPE:
-
- ACPI_ERROR((AE_INFO,
- "[%4.4s] Evaluation of object type [%s] is not supported",
- info->resolved_node->name.ascii,
- acpi_ut_get_type_name(info->resolved_node->
- type)));
-
- return_ACPI_STATUS(AE_TYPE);
-
- default:
- break;
- }
/*
- * Objects require additional resolution steps (e.g., the Node may be
- * a field that must be read, etc.) -- we can't just grab the object
- * out of the node.
+ * Some objects require additional resolution steps (e.g., the Node
+ * may be a field that must be read, etc.) -- we can't just grab
+ * the object out of the node.
*
* Use resolve_node_to_value() to get the associated value.
*
* NOTE: we can get away with passing in NULL for a walk state because
- * resolved_node is guaranteed to not be a reference to either a method
+ * the Node is guaranteed to not be a reference to either a method
* local or a method argument (because this interface is never called
* from a running method.)
*
* Even though we do not directly invoke the interpreter for object
- * resolution, we must lock it because we could access an opregion.
- * The opregion access code assumes that the interpreter is locked.
+ * resolution, we must lock it because we could access an op_region.
+ * The op_region access code assumes that the interpreter is locked.
*/
acpi_ex_enter_interpreter();
- /* Function has a strange interface */
+ /* TBD: resolve_node_to_value has a strange interface, fix */
+
+ info->return_object =
+ ACPI_CAST_PTR(union acpi_operand_object, info->node);
status =
- acpi_ex_resolve_node_to_value(&info->resolved_node, NULL);
+ acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR
+ (struct acpi_namespace_node,
+ &info->return_object), NULL);
acpi_ex_exit_interpreter();
- /*
- * If acpi_ex_resolve_node_to_value() succeeded, the return value was placed
- * in resolved_node.
- */
- if (ACPI_SUCCESS(status)) {
- status = AE_CTRL_RETURN_VALUE;
- info->return_object =
- ACPI_CAST_PTR(union acpi_operand_object,
- info->resolved_node);
-
- ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
- "Returning object %p [%s]\n",
- info->return_object,
- acpi_ut_get_object_type_name(info->
- return_object)));
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
}
+
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "Returned object %p [%s]\n",
+ info->return_object,
+ acpi_ut_get_object_type_name(info->
+ return_object)));
+
+ status = AE_CTRL_RETURN_VALUE; /* Always has a "return value" */
+ break;
}
/*
- * Check input argument count against the ASL-defined count for a method.
- * Also check predefined names: argument count and return value against
- * the ACPI specification. Some incorrect return value types are repaired.
+ * For predefined names, check the return value against the ACPI
+ * specification. Some incorrect return value types are repaired.
*/
- (void)acpi_ns_check_predefined_names(node, info->param_count,
- status, &info->return_object);
+ (void)acpi_ns_check_return_value(info->node, info, info->param_count,
+ status, &info->return_object);
/* Check if there is a return value that must be dealt with */
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"*** Completed evaluation of object %s ***\n",
- info->pathname));
+ info->relative_pathname));
+ cleanup:
/*
* Namespace was unlocked by the handling acpi_ns* function, so we
- * just return
+ * just free the pathname and return
*/
+ ACPI_FREE(info->full_pathname);
+ info->full_pathname = NULL;
return_ACPI_STATUS(status);
}
* part of the ACPI specification.
*/
info.evaluate_info->prefix_node = acpi_gbl_root_node;
- info.evaluate_info->pathname = METHOD_NAME__INI;
+ info.evaluate_info->relative_pathname = METHOD_NAME__INI;
info.evaluate_info->parameters = NULL;
info.evaluate_info->flags = ACPI_IGNORE_RETURN_VALUE;
switch (type) {
case ACPI_TYPE_REGION:
+
info->op_region_count++;
break;
case ACPI_TYPE_BUFFER_FIELD:
+
info->field_count++;
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
+
info->field_count++;
break;
case ACPI_TYPE_BUFFER:
+
info->buffer_count++;
break;
case ACPI_TYPE_PACKAGE:
+
info->package_count++;
break;
default:
/* No init required, just exit now */
+
return (AE_OK);
}
break;
default:
+
/* No other types can get here */
+
break;
}
break;
default:
+
break;
}
ACPI_MEMSET(info, 0, sizeof(struct acpi_evaluate_info));
info->prefix_node = device_node;
- info->pathname = METHOD_NAME__INI;
+ info->relative_pathname = METHOD_NAME__INI;
info->parameters = NULL;
info->flags = ACPI_IGNORE_RETURN_VALUE;
/* Ignore error and move on to next device */
- char *scope_name =
- acpi_ns_get_external_pathname(info->resolved_node);
+ char *scope_name = acpi_ns_get_external_pathname(info->node);
ACPI_EXCEPTION((AE_INFO, status, "during %s._INI execution",
scope_name));
* There are several areas that are validated:
*
* 1) The number of input arguments as defined by the method/object in the
- * ASL is validated against the ACPI specification.
+ * ASL is validated against the ACPI specification.
* 2) The type of the return object (if any) is validated against the ACPI
- * specification.
+ * specification.
* 3) For returned package objects, the count of package elements is
- * validated, as well as the type of each package element. Nested
- * packages are supported.
+ * validated, as well as the type of each package element. Nested
+ * packages are supported.
*
* For any problems found, a warning message is issued.
*
******************************************************************************/
/* Local prototypes */
static acpi_status
-acpi_ns_check_reference(struct acpi_predefined_data *data,
+acpi_ns_check_reference(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object);
static u32 acpi_ns_get_bitmapped_type(union acpi_operand_object *return_object);
/*******************************************************************************
*
- * FUNCTION: acpi_ns_check_predefined_names
+ * FUNCTION: acpi_ns_check_return_value
*
* PARAMETERS: node - Namespace node for the method/object
+ * info - Method execution information block
* user_param_count - Number of parameters actually passed
* return_status - Status from the object evaluation
* return_object_ptr - Pointer to the object returned from the
*
* RETURN: Status
*
- * DESCRIPTION: Check an ACPI name for a match in the predefined name list.
+ * DESCRIPTION: Check the value returned from a predefined name.
*
******************************************************************************/
acpi_status
-acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
- u32 user_param_count,
- acpi_status return_status,
- union acpi_operand_object **return_object_ptr)
+acpi_ns_check_return_value(struct acpi_namespace_node *node,
+ struct acpi_evaluate_info *info,
+ u32 user_param_count,
+ acpi_status return_status,
+ union acpi_operand_object **return_object_ptr)
{
- acpi_status status = AE_OK;
+ acpi_status status;
const union acpi_predefined_info *predefined;
- char *pathname;
- struct acpi_predefined_data *data;
-
- /* Match the name for this method/object against the predefined list */
-
- predefined = acpi_ut_match_predefined_method(node->name.ascii);
-
- /* Get the full pathname to the object, for use in warning messages */
-
- pathname = acpi_ns_get_external_pathname(node);
- if (!pathname) {
- return (AE_OK); /* Could not get pathname, ignore */
- }
-
- /*
- * Check that the parameter count for this method matches the ASL
- * definition. For predefined names, ensure that both the caller and
- * the method itself are in accordance with the ACPI specification.
- */
- acpi_ns_check_parameter_count(pathname, node, user_param_count,
- predefined);
/* If not a predefined name, we cannot validate the return object */
+ predefined = info->predefined;
if (!predefined) {
- goto cleanup;
+ return (AE_OK);
}
/*
* validate the return object
*/
if ((return_status != AE_OK) && (return_status != AE_CTRL_RETURN_VALUE)) {
- goto cleanup;
+ return (AE_OK);
}
/*
if (acpi_gbl_disable_auto_repair ||
(!predefined->info.expected_btypes) ||
(predefined->info.expected_btypes == ACPI_RTYPE_ALL)) {
- goto cleanup;
- }
-
- /* Create the parameter data block for object validation */
-
- data = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_predefined_data));
- if (!data) {
- goto cleanup;
+ return (AE_OK);
}
- data->predefined = predefined;
- data->node = node;
- data->node_flags = node->flags;
- data->pathname = pathname;
/*
* Check that the type of the main return object is what is expected
* for this predefined name
*/
- status = acpi_ns_check_object_type(data, return_object_ptr,
+ status = acpi_ns_check_object_type(info, return_object_ptr,
predefined->info.expected_btypes,
ACPI_NOT_PACKAGE_ELEMENT);
if (ACPI_FAILURE(status)) {
* Note: Package may have been newly created by call above.
*/
if ((*return_object_ptr)->common.type == ACPI_TYPE_PACKAGE) {
- data->parent_package = *return_object_ptr;
- status = acpi_ns_check_package(data, return_object_ptr);
+ info->parent_package = *return_object_ptr;
+ status = acpi_ns_check_package(info, return_object_ptr);
if (ACPI_FAILURE(status)) {
- goto exit;
+
+ /* We might be able to fix some errors */
+
+ if ((status != AE_AML_OPERAND_TYPE) &&
+ (status != AE_AML_OPERAND_VALUE)) {
+ goto exit;
+ }
}
}
* performed on a per-name basis, i.e., the code is specific to
* particular predefined names.
*/
- status = acpi_ns_complex_repairs(data, node, status, return_object_ptr);
+ status = acpi_ns_complex_repairs(info, node, status, return_object_ptr);
exit:
/*
* or more objects, mark the parent node to suppress further warning
* messages during the next evaluation of the same method/object.
*/
- if (ACPI_FAILURE(status) || (data->flags & ACPI_OBJECT_REPAIRED)) {
+ if (ACPI_FAILURE(status) || (info->return_flags & ACPI_OBJECT_REPAIRED)) {
node->flags |= ANOBJ_EVALUATED;
}
- ACPI_FREE(data);
-cleanup:
- ACPI_FREE(pathname);
return (status);
}
-/*******************************************************************************
- *
- * FUNCTION: acpi_ns_check_parameter_count
- *
- * PARAMETERS: pathname - Full pathname to the node (for error msgs)
- * node - Namespace node for the method/object
- * user_param_count - Number of args passed in by the caller
- * predefined - Pointer to entry in predefined name table
- *
- * RETURN: None
- *
- * DESCRIPTION: Check that the declared (in ASL/AML) parameter count for a
- * predefined name is what is expected (i.e., what is defined in
- * the ACPI specification for this predefined name.)
- *
- ******************************************************************************/
-
-void
-acpi_ns_check_parameter_count(char *pathname,
- struct acpi_namespace_node *node,
- u32 user_param_count,
- const union acpi_predefined_info *predefined)
-{
- u32 param_count;
- u32 required_params_current;
- u32 required_params_old;
-
- /* Methods have 0-7 parameters. All other types have zero. */
-
- param_count = 0;
- if (node->type == ACPI_TYPE_METHOD) {
- param_count = node->object->method.param_count;
- }
-
- if (!predefined) {
- /*
- * Check the parameter count for non-predefined methods/objects.
- *
- * Warning if too few or too many arguments have been passed by the
- * caller. An incorrect number of arguments may not cause the method
- * to fail. However, the method will fail if there are too few
- * arguments and the method attempts to use one of the missing ones.
- */
- if (user_param_count < param_count) {
- ACPI_WARN_PREDEFINED((AE_INFO, pathname,
- ACPI_WARN_ALWAYS,
- "Insufficient arguments - needs %u, found %u",
- param_count, user_param_count));
- } else if (user_param_count > param_count) {
- ACPI_WARN_PREDEFINED((AE_INFO, pathname,
- ACPI_WARN_ALWAYS,
- "Excess arguments - needs %u, found %u",
- param_count, user_param_count));
- }
- return;
- }
-
- /*
- * Validate the user-supplied parameter count.
- * Allow two different legal argument counts (_SCP, etc.)
- */
- required_params_current =
- predefined->info.argument_list & METHOD_ARG_MASK;
- required_params_old =
- predefined->info.argument_list >> METHOD_ARG_BIT_WIDTH;
-
- if (user_param_count != ACPI_UINT32_MAX) {
- if ((user_param_count != required_params_current) &&
- (user_param_count != required_params_old)) {
- ACPI_WARN_PREDEFINED((AE_INFO, pathname,
- ACPI_WARN_ALWAYS,
- "Parameter count mismatch - "
- "caller passed %u, ACPI requires %u",
- user_param_count,
- required_params_current));
- }
- }
-
- /*
- * Check that the ASL-defined parameter count is what is expected for
- * this predefined name (parameter count as defined by the ACPI
- * specification)
- */
- if ((param_count != required_params_current) &&
- (param_count != required_params_old)) {
- ACPI_WARN_PREDEFINED((AE_INFO, pathname, node->flags,
- "Parameter count mismatch - ASL declared %u, ACPI requires %u",
- param_count, required_params_current));
- }
-}
-
/*******************************************************************************
*
* FUNCTION: acpi_ns_check_object_type
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
* expected_btypes - Bitmap of expected return type(s)
******************************************************************************/
acpi_status
-acpi_ns_check_object_type(struct acpi_predefined_data *data,
+acpi_ns_check_object_type(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr,
u32 expected_btypes, u32 package_index)
{
if (return_object &&
ACPI_GET_DESCRIPTOR_TYPE(return_object) == ACPI_DESC_TYPE_NAMED) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Invalid return type - Found a Namespace node [%4.4s] type %s",
return_object->node.name.ascii,
acpi_ut_get_type_name(return_object->node.
* from all of the predefined names (including elements of returned
* packages)
*/
- data->return_btype = acpi_ns_get_bitmapped_type(return_object);
- if (data->return_btype == ACPI_RTYPE_ANY) {
+ info->return_btype = acpi_ns_get_bitmapped_type(return_object);
+ if (info->return_btype == ACPI_RTYPE_ANY) {
/* Not one of the supported objects, must be incorrect */
goto type_error_exit;
/* For reference objects, check that the reference type is correct */
- if ((data->return_btype & expected_btypes) == ACPI_RTYPE_REFERENCE) {
- status = acpi_ns_check_reference(data, return_object);
+ if ((info->return_btype & expected_btypes) == ACPI_RTYPE_REFERENCE) {
+ status = acpi_ns_check_reference(info, return_object);
return (status);
}
/* Attempt simple repair of the returned object if necessary */
- status = acpi_ns_simple_repair(data, expected_btypes,
+ status = acpi_ns_simple_repair(info, expected_btypes,
package_index, return_object_ptr);
- return (status);
+ if (ACPI_SUCCESS(status)) {
+ return (AE_OK); /* Successful repair */
+ }
type_error_exit:
acpi_ut_get_expected_return_types(type_buffer, expected_btypes);
if (package_index == ACPI_NOT_PACKAGE_ELEMENT) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Return type mismatch - found %s, expected %s",
acpi_ut_get_object_type_name
(return_object), type_buffer));
} else {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Return Package type mismatch at index %u - "
"found %s, expected %s", package_index,
acpi_ut_get_object_type_name
*
* FUNCTION: acpi_ns_check_reference
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object - Object returned from the evaluation of a
* method or object
*
******************************************************************************/
static acpi_status
-acpi_ns_check_reference(struct acpi_predefined_data *data,
+acpi_ns_check_reference(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object)
{
return (AE_OK);
}
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags,
"Return type mismatch - unexpected reference object type [%s] %2.2X",
acpi_ut_get_reference_name(return_object),
return_object->reference.class));
switch (return_object->common.type) {
case ACPI_TYPE_INTEGER:
+
return_btype = ACPI_RTYPE_INTEGER;
break;
case ACPI_TYPE_BUFFER:
+
return_btype = ACPI_RTYPE_BUFFER;
break;
case ACPI_TYPE_STRING:
+
return_btype = ACPI_RTYPE_STRING;
break;
case ACPI_TYPE_PACKAGE:
+
return_btype = ACPI_RTYPE_PACKAGE;
break;
case ACPI_TYPE_LOCAL_REFERENCE:
+
return_btype = ACPI_RTYPE_REFERENCE;
break;
default:
+
/* Not one of the supported objects, must be incorrect */
return_btype = ACPI_RTYPE_ANY;
/* Local prototypes */
static acpi_status
-acpi_ns_check_package_list(struct acpi_predefined_data *data,
+acpi_ns_check_package_list(struct acpi_evaluate_info *info,
const union acpi_predefined_info *package,
union acpi_operand_object **elements, u32 count);
static acpi_status
-acpi_ns_check_package_elements(struct acpi_predefined_data *data,
+acpi_ns_check_package_elements(struct acpi_evaluate_info *info,
union acpi_operand_object **elements,
u8 type1,
u32 count1,
*
* FUNCTION: acpi_ns_check_package
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
******************************************************************************/
acpi_status
-acpi_ns_check_package(struct acpi_predefined_data *data,
+acpi_ns_check_package(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
/* The package info for this name is in the next table entry */
- package = data->predefined + 1;
+ package = info->predefined + 1;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"%s Validating return Package of Type %X, Count %X\n",
- data->pathname, package->ret_info.type,
+ info->full_pathname, package->ret_info.type,
return_object->package.count));
/*
* For variable-length Packages, we can safely remove all embedded
* and trailing NULL package elements
*/
- acpi_ns_remove_null_elements(data, package->ret_info.type,
+ acpi_ns_remove_null_elements(info, package->ret_info.type,
return_object);
/* Extract package count and elements array */
return (AE_OK);
}
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Return Package has no elements (empty)"));
return (AE_AML_OPERAND_VALUE);
*/
switch (package->ret_info.type) {
case ACPI_PTYPE1_FIXED:
-
/*
* The package count is fixed and there are no sub-packages
*
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Return Package is larger than needed - "
"found %u, expected %u\n",
- data->pathname, count,
+ info->full_pathname, count,
expected_count));
}
/* Validate all elements of the returned package */
- status = acpi_ns_check_package_elements(data, elements,
+ status = acpi_ns_check_package_elements(info, elements,
package->ret_info.
object_type1,
package->ret_info.
break;
case ACPI_PTYPE1_VAR:
-
/*
* The package count is variable, there are no sub-packages, and all
* elements must be of the same type
*/
for (i = 0; i < count; i++) {
- status = acpi_ns_check_object_type(data, elements,
+ status = acpi_ns_check_object_type(info, elements,
package->ret_info.
object_type1, i);
if (ACPI_FAILURE(status)) {
break;
case ACPI_PTYPE1_OPTION:
-
/*
* The package count is variable, there are no sub-packages. There are
* a fixed number of required elements, and a variable number of
/* These are the required package elements (0, 1, or 2) */
status =
- acpi_ns_check_object_type(data, elements,
+ acpi_ns_check_object_type(info, elements,
package->
ret_info3.
object_type[i],
/* These are the optional package elements */
status =
- acpi_ns_check_object_type(data, elements,
+ acpi_ns_check_object_type(info, elements,
package->
ret_info3.
tail_object_type,
/* First element is the (Integer) revision */
- status = acpi_ns_check_object_type(data, elements,
+ status = acpi_ns_check_object_type(info, elements,
ACPI_RTYPE_INTEGER, 0);
if (ACPI_FAILURE(status)) {
return (status);
/* Examine the sub-packages */
status =
- acpi_ns_check_package_list(data, package, elements, count);
+ acpi_ns_check_package_list(info, package, elements, count);
break;
case ACPI_PTYPE2_PKG_COUNT:
/* First element is the (Integer) count of sub-packages to follow */
- status = acpi_ns_check_object_type(data, elements,
+ status = acpi_ns_check_object_type(info, elements,
ACPI_RTYPE_INTEGER, 0);
if (ACPI_FAILURE(status)) {
return (status);
/* Examine the sub-packages */
status =
- acpi_ns_check_package_list(data, package, elements, count);
+ acpi_ns_check_package_list(info, package, elements, count);
break;
case ACPI_PTYPE2:
case ACPI_PTYPE2_MIN:
case ACPI_PTYPE2_COUNT:
case ACPI_PTYPE2_FIX_VAR:
-
/*
* These types all return a single Package that consists of a
* variable number of sub-Packages.
/* Create the new outer package and populate it */
status =
- acpi_ns_wrap_with_package(data, return_object,
+ acpi_ns_wrap_with_package(info, return_object,
return_object_ptr);
if (ACPI_FAILURE(status)) {
return (status);
/* Examine the sub-packages */
status =
- acpi_ns_check_package_list(data, package, elements, count);
+ acpi_ns_check_package_list(info, package, elements, count);
break;
default:
/* Should not get here if predefined info table is correct */
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Invalid internal return type in table entry: %X",
package->ret_info.type));
/* Error exit for the case with an incorrect package count */
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags,
"Return Package is too small - found %u elements, expected %u",
count, expected_count));
*
* FUNCTION: acpi_ns_check_package_list
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* package - Pointer to package-specific info for method
* elements - Element list of parent package. All elements
* of this list should be of type Package.
******************************************************************************/
static acpi_status
-acpi_ns_check_package_list(struct acpi_predefined_data *data,
+acpi_ns_check_package_list(struct acpi_evaluate_info *info,
const union acpi_predefined_info *package,
union acpi_operand_object **elements, u32 count)
{
for (i = 0; i < count; i++) {
sub_package = *elements;
sub_elements = sub_package->package.elements;
- data->parent_package = sub_package;
+ info->parent_package = sub_package;
/* Each sub-object must be of type Package */
- status = acpi_ns_check_object_type(data, &sub_package,
+ status = acpi_ns_check_object_type(info, &sub_package,
ACPI_RTYPE_PACKAGE, i);
if (ACPI_FAILURE(status)) {
return (status);
/* Examine the different types of expected sub-packages */
- data->parent_package = sub_package;
+ info->parent_package = sub_package;
switch (package->ret_info.type) {
case ACPI_PTYPE2:
case ACPI_PTYPE2_PKG_COUNT:
}
status =
- acpi_ns_check_package_elements(data, sub_elements,
+ acpi_ns_check_package_elements(info, sub_elements,
package->ret_info.
object_type1,
package->ret_info.
}
status =
- acpi_ns_check_package_elements(data, sub_elements,
+ acpi_ns_check_package_elements(info, sub_elements,
package->ret_info.
object_type1,
package->ret_info.
for (j = 0; j < expected_count; j++) {
status =
- acpi_ns_check_object_type(data,
+ acpi_ns_check_object_type(info,
&sub_elements[j],
package->
ret_info2.
/* Check the type of each sub-package element */
status =
- acpi_ns_check_package_elements(data, sub_elements,
+ acpi_ns_check_package_elements(info, sub_elements,
package->ret_info.
object_type1,
sub_package->package.
break;
case ACPI_PTYPE2_COUNT:
-
/*
* First element is the (Integer) count of elements, including
* the count field (the ACPI name is num_elements)
*/
- status = acpi_ns_check_object_type(data, sub_elements,
+ status = acpi_ns_check_object_type(info, sub_elements,
ACPI_RTYPE_INTEGER,
0);
if (ACPI_FAILURE(status)) {
/* Check the type of each sub-package element */
status =
- acpi_ns_check_package_elements(data,
+ acpi_ns_check_package_elements(info,
(sub_elements + 1),
package->ret_info.
object_type1,
/* The sub-package count was smaller than required */
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags,
"Return Sub-Package[%u] is too small - found %u elements, expected %u",
i, sub_package->package.count, expected_count));
*
* FUNCTION: acpi_ns_check_package_elements
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* elements - Pointer to the package elements array
* type1 - Object type for first group
* count1 - Count for first group
******************************************************************************/
static acpi_status
-acpi_ns_check_package_elements(struct acpi_predefined_data *data,
+acpi_ns_check_package_elements(struct acpi_evaluate_info *info,
union acpi_operand_object **elements,
u8 type1,
u32 count1,
* The second group can have a count of zero.
*/
for (i = 0; i < count1; i++) {
- status = acpi_ns_check_object_type(data, this_element,
+ status = acpi_ns_check_object_type(info, this_element,
type1, i + start_index);
if (ACPI_FAILURE(status)) {
return (status);
}
for (i = 0; i < count2; i++) {
- status = acpi_ns_check_object_type(data, this_element,
+ status = acpi_ns_check_object_type(info, this_element,
type2,
(i + count1 + start_index));
if (ACPI_FAILURE(status)) {
*
* FUNCTION: acpi_ns_simple_repair
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* expected_btypes - Object types expected
* package_index - Index of object within parent package (if
* applicable - ACPI_NOT_PACKAGE_ELEMENT
******************************************************************************/
acpi_status
-acpi_ns_simple_repair(struct acpi_predefined_data *data,
+acpi_ns_simple_repair(struct acpi_evaluate_info *info,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr)
* Special repairs for certain names that are in the repair table.
* Check if this name is in the list of repairable names.
*/
- predefined = acpi_ns_match_simple_repair(data->node,
- data->return_btype,
+ predefined = acpi_ns_match_simple_repair(info->node,
+ info->return_btype,
package_index);
if (predefined) {
if (!return_object) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
ACPI_WARN_ALWAYS,
"Missing expected return value"));
}
* Do not perform simple object repair unless the return type is not
* expected.
*/
- if (data->return_btype & expected_btypes) {
+ if (info->return_btype & expected_btypes) {
return (AE_OK);
}
*/
if (!return_object) {
if (expected_btypes && (!(expected_btypes & ACPI_RTYPE_NONE))) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
ACPI_WARN_ALWAYS,
"Missing expected return value"));
* for correct contents (expected object type or types).
*/
status =
- acpi_ns_wrap_with_package(data, return_object, &new_object);
+ acpi_ns_wrap_with_package(info, return_object, &new_object);
if (ACPI_SUCCESS(status)) {
/*
* The original object just had its reference count
* incremented for being inserted into the new package.
*/
*return_object_ptr = new_object; /* New Package object */
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
}
* package object as part of the repair, we don't need to
* change the reference count.
*/
- if (!(data->flags & ACPI_OBJECT_WRAPPED)) {
+ if (!(info->return_flags & ACPI_OBJECT_WRAPPED)) {
new_object->common.reference_count =
return_object->common.reference_count;
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s at Package index %u\n",
- data->pathname,
+ info->full_pathname,
acpi_ut_get_object_type_name(return_object),
acpi_ut_get_object_type_name(new_object),
package_index));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s\n",
- data->pathname,
+ info->full_pathname,
acpi_ut_get_object_type_name(return_object),
acpi_ut_get_object_type_name(new_object)));
}
acpi_ut_remove_reference(return_object);
*return_object_ptr = new_object;
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
*
* FUNCTION: acpi_ns_repair_null_element
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* expected_btypes - Object types expected
* package_index - Index of object within parent package (if
* applicable - ACPI_NOT_PACKAGE_ELEMENT
******************************************************************************/
acpi_status
-acpi_ns_repair_null_element(struct acpi_predefined_data *data,
+acpi_ns_repair_null_element(struct acpi_evaluate_info * info,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr)
/* Set the reference count according to the parent Package object */
new_object->common.reference_count =
- data->parent_package->common.reference_count;
+ info->parent_package->common.reference_count;
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted NULL package element to expected %s at index %u\n",
- data->pathname,
+ info->full_pathname,
acpi_ut_get_object_type_name(new_object),
package_index));
*return_object_ptr = new_object;
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
*
* FUNCTION: acpi_ns_remove_null_elements
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* package_type - An acpi_return_package_types value
* obj_desc - A Package object
*
*****************************************************************************/
void
-acpi_ns_remove_null_elements(struct acpi_predefined_data *data,
+acpi_ns_remove_null_elements(struct acpi_evaluate_info *info,
u8 package_type,
union acpi_operand_object *obj_desc)
{
case ACPI_PTYPE2_MIN:
case ACPI_PTYPE2_REV_FIXED:
case ACPI_PTYPE2_FIX_VAR:
+
break;
default:
if (new_count < count) {
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Found and removed %u NULL elements\n",
- data->pathname, (count - new_count)));
+ info->full_pathname, (count - new_count)));
/* NULL terminate list and update the package count */
*
* FUNCTION: acpi_ns_wrap_with_package
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* original_object - Pointer to the object to repair.
* obj_desc_ptr - The new package object is returned here
*
******************************************************************************/
acpi_status
-acpi_ns_wrap_with_package(struct acpi_predefined_data *data,
+acpi_ns_wrap_with_package(struct acpi_evaluate_info *info,
union acpi_operand_object *original_object,
union acpi_operand_object **obj_desc_ptr)
{
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Wrapped %s with expected Package object\n",
- data->pathname,
+ info->full_pathname,
acpi_ut_get_object_type_name(original_object)));
/* Return the new object in the object pointer */
*obj_desc_ptr = pkg_obj_desc;
- data->flags |= ACPI_OBJECT_REPAIRED | ACPI_OBJECT_WRAPPED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED | ACPI_OBJECT_WRAPPED;
return (AE_OK);
}
* be repaired on a per-name basis.
*/
typedef
-acpi_status(*acpi_repair_function) (struct acpi_predefined_data *data,
+acpi_status(*acpi_repair_function) (struct acpi_evaluate_info * info,
union acpi_operand_object
**return_object_ptr);
*node);
static acpi_status
-acpi_ns_repair_ALR(struct acpi_predefined_data *data,
+acpi_ns_repair_ALR(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_repair_CID(struct acpi_predefined_data *data,
+acpi_ns_repair_CID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_repair_FDE(struct acpi_predefined_data *data,
+acpi_ns_repair_CST(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_repair_HID(struct acpi_predefined_data *data,
+acpi_ns_repair_FDE(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_repair_PSS(struct acpi_predefined_data *data,
+acpi_ns_repair_HID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_repair_TSS(struct acpi_predefined_data *data,
+acpi_ns_repair_PRT(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_check_sorted_list(struct acpi_predefined_data *data,
+acpi_ns_repair_PSS(struct acpi_evaluate_info *info,
+ union acpi_operand_object **return_object_ptr);
+
+static acpi_status
+acpi_ns_repair_TSS(struct acpi_evaluate_info *info,
+ union acpi_operand_object **return_object_ptr);
+
+static acpi_status
+acpi_ns_check_sorted_list(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object,
+ u32 start_index,
u32 expected_count,
u32 sort_index,
u8 sort_direction, char *sort_key_name);
-static void
-acpi_ns_sort_list(union acpi_operand_object **elements,
- u32 count, u32 index, u8 sort_direction);
-
/* Values for sort_direction above */
#define ACPI_SORT_ASCENDING 0
#define ACPI_SORT_DESCENDING 1
+static void
+acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index);
+
+static void
+acpi_ns_sort_list(union acpi_operand_object **elements,
+ u32 count, u32 index, u8 sort_direction);
+
/*
* This table contains the names of the predefined methods for which we can
* perform more complex repairs.
*
* _ALR: Sort the list ascending by ambient_illuminance
* _CID: Strings: uppercase all, remove any leading asterisk
+ * _CST: Sort the list ascending by C state type
* _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs
* _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs
* _HID: Strings: uppercase all, remove any leading asterisk
+ * _PRT: Fix reversed source_name and source_index
* _PSS: Sort the list descending by Power
* _TSS: Sort the list descending by Power
*
static const struct acpi_repair_info acpi_ns_repairable_names[] = {
{"_ALR", acpi_ns_repair_ALR},
{"_CID", acpi_ns_repair_CID},
+ {"_CST", acpi_ns_repair_CST},
{"_FDE", acpi_ns_repair_FDE},
{"_GTM", acpi_ns_repair_FDE}, /* _GTM has same repair as _FDE */
{"_HID", acpi_ns_repair_HID},
+ {"_PRT", acpi_ns_repair_PRT},
{"_PSS", acpi_ns_repair_PSS},
{"_TSS", acpi_ns_repair_TSS},
{{0, 0, 0, 0}, NULL} /* Table terminator */
*
* FUNCTION: acpi_ns_complex_repairs
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* node - Namespace node for the method/object
* validate_status - Original status of earlier validation
* return_object_ptr - Pointer to the object returned from the
*****************************************************************************/
acpi_status
-acpi_ns_complex_repairs(struct acpi_predefined_data *data,
+acpi_ns_complex_repairs(struct acpi_evaluate_info *info,
struct acpi_namespace_node *node,
acpi_status validate_status,
union acpi_operand_object **return_object_ptr)
return (validate_status);
}
- status = predefined->repair_function(data, return_object_ptr);
+ status = predefined->repair_function(info, return_object_ptr);
return (status);
}
*
* FUNCTION: acpi_ns_repair_ALR
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_ALR(struct acpi_predefined_data *data,
+acpi_ns_repair_ALR(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
acpi_status status;
- status = acpi_ns_check_sorted_list(data, return_object, 2, 1,
+ status = acpi_ns_check_sorted_list(info, return_object, 0, 2, 1,
ACPI_SORT_ASCENDING,
"AmbientIlluminance");
*
* FUNCTION: acpi_ns_repair_FDE
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_FDE(struct acpi_predefined_data *data,
+acpi_ns_repair_FDE(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
/* We can only repair if we have exactly 5 BYTEs */
if (return_object->buffer.length != ACPI_FDE_BYTE_BUFFER_SIZE) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
- data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Incorrect return buffer length %u, expected %u",
return_object->buffer.length,
ACPI_FDE_DWORD_BUFFER_SIZE));
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s Expanded Byte Buffer to expected DWord Buffer\n",
- data->pathname));
+ info->full_pathname));
break;
default:
+
return (AE_AML_OPERAND_TYPE);
}
acpi_ut_remove_reference(return_object);
*return_object_ptr = buffer_object;
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
*
* FUNCTION: acpi_ns_repair_CID
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_CID(struct acpi_predefined_data *data,
+acpi_ns_repair_CID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
acpi_status status;
/* Check for _CID as a simple string */
if (return_object->common.type == ACPI_TYPE_STRING) {
- status = acpi_ns_repair_HID(data, return_object_ptr);
+ status = acpi_ns_repair_HID(info, return_object_ptr);
return (status);
}
original_element = *element_ptr;
original_ref_count = original_element->common.reference_count;
- status = acpi_ns_repair_HID(data, element_ptr);
+ status = acpi_ns_repair_HID(info, element_ptr);
if (ACPI_FAILURE(status)) {
return (status);
}
return (AE_OK);
}
+/******************************************************************************
+ *
+ * FUNCTION: acpi_ns_repair_CST
+ *
+ * PARAMETERS: info - Method execution information block
+ * return_object_ptr - Pointer to the object returned from the
+ * evaluation of a method or object
+ *
+ * RETURN: Status. AE_OK if object is OK or was repaired successfully
+ *
+ * DESCRIPTION: Repair for the _CST object:
+ * 1. Sort the list ascending by C state type
+ * 2. Ensure type cannot be zero
+ * 3. A sub-package count of zero means _CST is meaningless
+ * 4. Count must match the number of C state sub-packages
+ *
+ *****************************************************************************/
+
+static acpi_status
+acpi_ns_repair_CST(struct acpi_evaluate_info *info,
+ union acpi_operand_object **return_object_ptr)
+{
+ union acpi_operand_object *return_object = *return_object_ptr;
+ union acpi_operand_object **outer_elements;
+ u32 outer_element_count;
+ union acpi_operand_object *obj_desc;
+ acpi_status status;
+ u8 removing;
+ u32 i;
+
+ ACPI_FUNCTION_NAME(ns_repair_CST);
+
+ /*
+ * Check if the C-state type values are proportional.
+ */
+ outer_element_count = return_object->package.count - 1;
+ i = 0;
+ while (i < outer_element_count) {
+ outer_elements = &return_object->package.elements[i + 1];
+ removing = FALSE;
+
+ if ((*outer_elements)->package.count == 0) {
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
+ "SubPackage[%u] - removing entry due to zero count",
+ i));
+ removing = TRUE;
+ goto remove_element;
+ }
+
+ obj_desc = (*outer_elements)->package.elements[1]; /* Index1 = Type */
+ if ((u32)obj_desc->integer.value == 0) {
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
+ "SubPackage[%u] - removing entry due to invalid Type(0)",
+ i));
+ removing = TRUE;
+ }
+
+ remove_element:
+ if (removing) {
+ acpi_ns_remove_element(return_object, i + 1);
+ outer_element_count--;
+ } else {
+ i++;
+ }
+ }
+
+ /* Update top-level package count, Type "Integer" checked elsewhere */
+
+ obj_desc = return_object->package.elements[0];
+ obj_desc->integer.value = outer_element_count;
+
+ /*
+ * Entries (subpackages) in the _CST Package must be sorted by the
+ * C-state type, in ascending order.
+ */
+ status = acpi_ns_check_sorted_list(info, return_object, 1, 4, 1,
+ ACPI_SORT_ASCENDING, "C-State Type");
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ return (AE_OK);
+}
+
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_HID
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_HID(struct acpi_predefined_data *data,
+acpi_ns_repair_HID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
}
if (return_object->string.length == 0) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Invalid zero-length _HID or _CID string"));
/* Return AE_OK anyway, let driver handle it */
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Removed invalid leading asterisk\n",
- data->pathname));
+ info->full_pathname));
}
/*
/******************************************************************************
*
- * FUNCTION: acpi_ns_repair_TSS
+ * FUNCTION: acpi_ns_repair_PRT
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
- * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list
- * descending by the power dissipation values.
+ * DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed
+ * source_name and source_index field, a common BIOS bug.
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_TSS(struct acpi_predefined_data *data,
+acpi_ns_repair_PRT(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
- union acpi_operand_object *return_object = *return_object_ptr;
- acpi_status status;
- struct acpi_namespace_node *node;
+ union acpi_operand_object *package_object = *return_object_ptr;
+ union acpi_operand_object **top_object_list;
+ union acpi_operand_object **sub_object_list;
+ union acpi_operand_object *obj_desc;
+ u32 element_count;
+ u32 index;
- /*
- * We can only sort the _TSS return package if there is no _PSS in the
- * same scope. This is because if _PSS is present, the ACPI specification
- * dictates that the _TSS Power Dissipation field is to be ignored, and
- * therefore some BIOSs leave garbage values in the _TSS Power field(s).
- * In this case, it is best to just return the _TSS package as-is.
- * (May, 2011)
- */
- status =
- acpi_ns_get_node(data->node, "^_PSS", ACPI_NS_NO_UPSEARCH, &node);
- if (ACPI_SUCCESS(status)) {
- return (AE_OK);
- }
+ /* Each element in the _PRT package is a subpackage */
- status = acpi_ns_check_sorted_list(data, return_object, 5, 1,
- ACPI_SORT_DESCENDING,
- "PowerDissipation");
+ top_object_list = package_object->package.elements;
+ element_count = package_object->package.count;
- return (status);
+ for (index = 0; index < element_count; index++) {
+ sub_object_list = (*top_object_list)->package.elements;
+
+ /*
+ * If the BIOS has erroneously reversed the _PRT source_name (index 2)
+ * and the source_index (index 3), fix it. _PRT is important enough to
+ * workaround this BIOS error. This also provides compatibility with
+ * other ACPI implementations.
+ */
+ obj_desc = sub_object_list[3];
+ if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) {
+ sub_object_list[3] = sub_object_list[2];
+ sub_object_list[2] = obj_desc;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
+
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
+ "PRT[%X]: Fixed reversed SourceName and SourceIndex",
+ index));
+ }
+
+ /* Point to the next union acpi_operand_object in the top level package */
+
+ top_object_list++;
+ }
+
+ return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_PSS
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_PSS(struct acpi_predefined_data *data,
+acpi_ns_repair_PSS(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
* incorrectly sorted, sort it. We sort by cpu_frequency, since this
* should be proportional to the power.
*/
- status = acpi_ns_check_sorted_list(data, return_object, 6, 0,
+ status = acpi_ns_check_sorted_list(info, return_object, 0, 6, 0,
ACPI_SORT_DESCENDING,
"CpuFrequency");
if (ACPI_FAILURE(status)) {
obj_desc = elements[1]; /* Index1 = power_dissipation */
if ((u32) obj_desc->integer.value > previous_value) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
- data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"SubPackage[%u,%u] - suspicious power dissipation values",
i - 1, i));
}
return (AE_OK);
}
+/******************************************************************************
+ *
+ * FUNCTION: acpi_ns_repair_TSS
+ *
+ * PARAMETERS: info - Method execution information block
+ * return_object_ptr - Pointer to the object returned from the
+ * evaluation of a method or object
+ *
+ * RETURN: Status. AE_OK if object is OK or was repaired successfully
+ *
+ * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list
+ * descending by the power dissipation values.
+ *
+ *****************************************************************************/
+
+static acpi_status
+acpi_ns_repair_TSS(struct acpi_evaluate_info *info,
+ union acpi_operand_object **return_object_ptr)
+{
+ union acpi_operand_object *return_object = *return_object_ptr;
+ acpi_status status;
+ struct acpi_namespace_node *node;
+
+ /*
+ * We can only sort the _TSS return package if there is no _PSS in the
+ * same scope. This is because if _PSS is present, the ACPI specification
+ * dictates that the _TSS Power Dissipation field is to be ignored, and
+ * therefore some BIOSs leave garbage values in the _TSS Power field(s).
+ * In this case, it is best to just return the _TSS package as-is.
+ * (May, 2011)
+ */
+ status = acpi_ns_get_node(info->node, "^_PSS",
+ ACPI_NS_NO_UPSEARCH, &node);
+ if (ACPI_SUCCESS(status)) {
+ return (AE_OK);
+ }
+
+ status = acpi_ns_check_sorted_list(info, return_object, 0, 5, 1,
+ ACPI_SORT_DESCENDING,
+ "PowerDissipation");
+
+ return (status);
+}
+
/******************************************************************************
*
* FUNCTION: acpi_ns_check_sorted_list
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object - Pointer to the top-level returned object
+ * start_index - Index of the first sub-package
* expected_count - Minimum length of each sub-package
* sort_index - Sub-package entry to sort on
* sort_direction - Ascending or descending
*****************************************************************************/
static acpi_status
-acpi_ns_check_sorted_list(struct acpi_predefined_data *data,
+acpi_ns_check_sorted_list(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object,
+ u32 start_index,
u32 expected_count,
u32 sort_index,
u8 sort_direction, char *sort_key_name)
* Any NULL elements should have been removed by earlier call
* to acpi_ns_remove_null_elements.
*/
- outer_elements = return_object->package.elements;
outer_element_count = return_object->package.count;
- if (!outer_element_count) {
+ if (!outer_element_count || start_index >= outer_element_count) {
return (AE_AML_PACKAGE_LIMIT);
}
+ outer_elements = &return_object->package.elements[start_index];
+ outer_element_count -= start_index;
+
previous_value = 0;
if (sort_direction == ACPI_SORT_DESCENDING) {
previous_value = ACPI_UINT32_MAX;
(obj_desc->integer.value < previous_value)) ||
((sort_direction == ACPI_SORT_DESCENDING) &&
(obj_desc->integer.value > previous_value))) {
- acpi_ns_sort_list(return_object->package.elements,
+ acpi_ns_sort_list(&return_object->package.
+ elements[start_index],
outer_element_count, sort_index,
sort_direction);
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Repaired unsorted list - now sorted by %s\n",
- data->pathname, sort_key_name));
+ info->full_pathname, sort_key_name));
return (AE_OK);
}
}
}
}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_ns_remove_element
+ *
+ * PARAMETERS: obj_desc - Package object element list
+ * index - Index of element to remove
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Remove the requested element of a package and delete it.
+ *
+ *****************************************************************************/
+
+static void
+acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index)
+{
+ union acpi_operand_object **source;
+ union acpi_operand_object **dest;
+ u32 count;
+ u32 new_count;
+ u32 i;
+
+ ACPI_FUNCTION_NAME(ns_remove_element);
+
+ count = obj_desc->package.count;
+ new_count = count - 1;
+
+ source = obj_desc->package.elements;
+ dest = source;
+
+ /* Examine all elements of the package object, remove matched index */
+
+ for (i = 0; i < count; i++) {
+ if (i == index) {
+ acpi_ut_remove_reference(*source); /* Remove one ref for being in pkg */
+ acpi_ut_remove_reference(*source);
+ } else {
+ *dest = *source;
+ dest++;
+ }
+ source++;
+ }
+
+ /* NULL terminate list and update the package count */
+
+ *dest = NULL;
+ obj_desc->package.count = new_count;
+}
switch (internal_name[0]) {
case AML_ROOT_PREFIX:
+
prefix_length = 1;
break;
case AML_PARENT_PREFIX:
+
for (i = 0; i < internal_name_length; i++) {
if (ACPI_IS_PARENT_PREFIX(internal_name[i])) {
prefix_length = i + 1;
break;
default:
+
break;
}
return_ACPI_STATUS(AE_NO_MEMORY);
}
- info->pathname = pathname;
-
/* Convert and validate the device handle */
info->prefix_node = acpi_ns_validate_handle(handle);
}
/*
- * If there are parameters to be passed to a control method, the external
- * objects must all be converted to internal objects
+ * Get the actual namespace node for the target object.
+ * Handles these cases:
+ *
+ * 1) Null node, valid pathname from root (absolute path)
+ * 2) Node and valid pathname (path relative to Node)
+ * 3) Node, Null pathname
+ */
+ if ((pathname) && (ACPI_IS_ROOT_PREFIX(pathname[0]))) {
+
+ /* The path is fully qualified, just evaluate by name */
+
+ info->prefix_node = NULL;
+ } else if (!handle) {
+ /*
+ * A handle is optional iff a fully qualified pathname is specified.
+ * Since we've already handled fully qualified names above, this is
+ * an error.
+ */
+ if (!pathname) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Both Handle and Pathname are NULL"));
+ } else {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Null Handle with relative pathname [%s]",
+ pathname));
+ }
+
+ status = AE_BAD_PARAMETER;
+ goto cleanup;
+ }
+
+ info->relative_pathname = pathname;
+
+ /*
+ * Convert all external objects passed as arguments to the
+ * internal version(s).
*/
if (external_params && external_params->count) {
+ info->param_count = (u16)external_params->count;
+
+ /* Warn on impossible argument count */
+
+ if (info->param_count > ACPI_METHOD_NUM_ARGS) {
+ ACPI_WARN_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Excess arguments (%u) - using only %u",
+ info->param_count,
+ ACPI_METHOD_NUM_ARGS));
+
+ info->param_count = ACPI_METHOD_NUM_ARGS;
+ }
+
/*
* Allocate a new parameter block for the internal objects
* Add 1 to count to allow for null terminated internal list
*/
- info->parameters = ACPI_ALLOCATE_ZEROED(((acpi_size)
- external_params->
- count +
+ info->parameters = ACPI_ALLOCATE_ZEROED(((acpi_size) info->
+ param_count +
1) * sizeof(void *));
if (!info->parameters) {
status = AE_NO_MEMORY;
/* Convert each external object in the list to an internal object */
- for (i = 0; i < external_params->count; i++) {
+ for (i = 0; i < info->param_count; i++) {
status =
acpi_ut_copy_eobject_to_iobject(&external_params->
pointer[i],
goto cleanup;
}
}
- info->parameters[external_params->count] = NULL;
+
+ info->parameters[info->param_count] = NULL;
}
+#if 0
+
/*
- * Three major cases:
- * 1) Fully qualified pathname
- * 2) No handle, not fully qualified pathname (error)
- * 3) Valid handle
+ * Begin incoming argument count analysis. Check for too few args
+ * and too many args.
*/
- if ((pathname) && (ACPI_IS_ROOT_PREFIX(pathname[0]))) {
- /* The path is fully qualified, just evaluate by name */
+ switch (acpi_ns_get_type(info->node)) {
+ case ACPI_TYPE_METHOD:
+
+ /* Check incoming argument count against the method definition */
+
+ if (info->obj_desc->method.param_count > info->param_count) {
+ ACPI_ERROR((AE_INFO,
+ "Insufficient arguments (%u) - %u are required",
+ info->param_count,
+ info->obj_desc->method.param_count));
+
+ status = AE_MISSING_ARGUMENTS;
+ goto cleanup;
+ }
+
+ else if (info->obj_desc->method.param_count < info->param_count) {
+ ACPI_WARNING((AE_INFO,
+ "Excess arguments (%u) - only %u are required",
+ info->param_count,
+ info->obj_desc->method.param_count));
+
+ /* Just pass the required number of arguments */
+
+ info->param_count = info->obj_desc->method.param_count;
+ }
- info->prefix_node = NULL;
- status = acpi_ns_evaluate(info);
- } else if (!handle) {
/*
- * A handle is optional iff a fully qualified pathname is specified.
- * Since we've already handled fully qualified names above, this is
- * an error
+ * Any incoming external objects to be passed as arguments to the
+ * method must be converted to internal objects
*/
- if (!pathname) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Both Handle and Pathname are NULL"));
- } else {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Null Handle with relative pathname [%s]",
- pathname));
+ if (info->param_count) {
+ /*
+ * Allocate a new parameter block for the internal objects
+ * Add 1 to count to allow for null terminated internal list
+ */
+ info->parameters = ACPI_ALLOCATE_ZEROED(((acpi_size)
+ info->
+ param_count +
+ 1) *
+ sizeof(void *));
+ if (!info->parameters) {
+ status = AE_NO_MEMORY;
+ goto cleanup;
+ }
+
+ /* Convert each external object in the list to an internal object */
+
+ for (i = 0; i < info->param_count; i++) {
+ status =
+ acpi_ut_copy_eobject_to_iobject
+ (&external_params->pointer[i],
+ &info->parameters[i]);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
+ }
+
+ info->parameters[info->param_count] = NULL;
}
+ break;
- status = AE_BAD_PARAMETER;
- } else {
- /* We have a namespace a node and a possible relative path */
+ default:
+
+ /* Warn if arguments passed to an object that is not a method */
- status = acpi_ns_evaluate(info);
+ if (info->param_count) {
+ ACPI_WARNING((AE_INFO,
+ "%u arguments were passed to a non-method ACPI object",
+ info->param_count));
+ }
+ break;
}
+#endif
+
+ /* Now we can evaluate the object */
+
+ status = acpi_ns_evaluate(info);
+
/*
* If we are expecting a return value, and all went well above,
* copy the return value to an external object.
break;
default:
+
return;
}
switch (opcode) {
case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
+
buffer_length =
ACPI_GET8(parser_state->aml);
parser_state->aml += 1;
break;
case AML_WORD_OP: /* AML_WORDDATA_ARG */
+
buffer_length =
ACPI_GET16(parser_state->aml);
parser_state->aml += 2;
break;
case AML_DWORD_OP: /* AML_DWORDATA_ARG */
+
buffer_length =
ACPI_GET32(parser_state->aml);
parser_state->aml += 4;
break;
default:
+
buffer_length = 0;
break;
}
case AML_IF_OP:
case AML_ELSE_OP:
case AML_WHILE_OP:
-
/*
* Currently supported module-level opcodes are:
* IF/ELSE/WHILE. These appear to be the most common,
default:
/* No action for all other opcodes */
+
break;
}
switch (status) {
case AE_OK:
+
break;
case AE_CTRL_TRANSFER:
switch (parent_info->class) {
case AML_CLASS_CONTROL:
+
break;
case AML_CLASS_CREATE:
-
/*
* These opcodes contain term_arg operands. The current
* op must be replaced by a placeholder return op
break;
case AML_CLASS_NAMED_OBJECT:
-
/*
* These opcodes contain term_arg operands. The current
* op must be replaced by a placeholder return op
break;
default:
+
/* All others have no children */
+
break;
}
}
if ((!acpi_gbl_trace_method_name) ||
- (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
+ (acpi_gbl_trace_method_name != info->node->name.integer)) {
goto exit;
}
}
if ((!acpi_gbl_trace_method_name) ||
- (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
+ (acpi_gbl_trace_method_name != info->node->name.integer)) {
goto exit;
}
/* Validate the Info and method Node */
- if (!info || !info->resolved_node) {
+ if (!info || !info->node) {
return_ACPI_STATUS(AE_NULL_ENTRY);
}
/* Init for new method, wait on concurrency semaphore */
status =
- acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc,
- NULL);
+ acpi_ds_begin_method_execution(info->node, info->obj_desc, NULL);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
*/
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
- info->resolved_node->name.ascii, info->resolved_node,
- info->obj_desc));
+ info->node->name.ascii, info->node, info->obj_desc));
/* Create and init a Root Node */
goto cleanup;
}
- status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node,
+ status = acpi_ds_init_aml_walk(walk_state, op, info->node,
info->obj_desc->method.aml_start,
info->obj_desc->method.aml_length, info,
info->pass_number);
break;
default:
+
break;
}
break;
default:
+
break;
}
name_found = FALSE;
- for (table_index = 0; table_index < 4 && !name_found;
- table_index++) {
+ for (table_index = 0;
+ table_index < package_element->package.count
+ && !name_found; table_index++) {
if (*sub_object_list && /* Null object allowed */
((ACPI_TYPE_STRING ==
(*sub_object_list)->common.type) ||
*/
user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4);
- /* Each element of the top-level package must also be a package */
-
- if ((*top_object_list)->common.type != ACPI_TYPE_PACKAGE) {
- ACPI_ERROR((AE_INFO,
- "(PRT[%u]) Need sub-package, found %s",
- index,
- acpi_ut_get_object_type_name
- (*top_object_list)));
- return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
- }
-
/* Each sub-package must be of length 4 */
if ((*top_object_list)->package.count != 4) {
user_prt->pin = (u32) obj_desc->integer.value;
- /*
- * If the BIOS has erroneously reversed the _PRT source_name (index 2)
- * and the source_index (index 3), fix it. _PRT is important enough to
- * workaround this BIOS error. This also provides compatibility with
- * other ACPI implementations.
- */
- obj_desc = sub_object_list[3];
- if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) {
- sub_object_list[3] = sub_object_list[2];
- sub_object_list[2] = obj_desc;
-
- ACPI_WARNING((AE_INFO,
- "(PRT[%X].Source) SourceName and SourceIndex are reversed, fixed",
- index));
- }
-
/*
* 3) Third subobject: Dereference the PRT.source_name
* The name may be unresolved (slack mode), so allow a null object
/* Strings */
case ACPI_RSD_LITERAL:
+
acpi_rs_out_string(name,
ACPI_CAST_PTR(char, table->pointer));
break;
case ACPI_RSD_STRING:
+
acpi_rs_out_string(name, ACPI_CAST_PTR(char, target));
break;
/* Data items, 8/16/32/64 bit */
case ACPI_RSD_UINT8:
+
if (table->pointer) {
acpi_rs_out_string(name, ACPI_CAST_PTR(char,
table->
break;
case ACPI_RSD_UINT16:
+
acpi_rs_out_integer16(name, ACPI_GET16(target));
break;
case ACPI_RSD_UINT32:
+
acpi_rs_out_integer32(name, ACPI_GET32(target));
break;
case ACPI_RSD_UINT64:
+
acpi_rs_out_integer64(name, ACPI_GET64(target));
break;
/* Flags: 1-bit and 2-bit flags supported */
case ACPI_RSD_1BITFLAG:
+
acpi_rs_out_string(name, ACPI_CAST_PTR(char,
table->
pointer[*target &
break;
case ACPI_RSD_2BITFLAG:
+
acpi_rs_out_string(name, ACPI_CAST_PTR(char,
table->
pointer[*target &
break;
case ACPI_RSD_3BITFLAG:
+
acpi_rs_out_string(name, ACPI_CAST_PTR(char,
table->
pointer[*target &
break;
default:
+
acpi_os_printf("**** Invalid table opcode [%X] ****\n",
table->opcode);
return;
break;
case ACPI_RSC_COUNT_GPIO_RES:
-
/*
* Vendor data is optional (length/offset may both be zero)
* Examine vendor data length field first
*/
switch (info->resource_offset) {
case ACPI_RSC_COMPARE_AML_LENGTH:
+
if (aml_resource_length != info->value) {
goto exit;
}
break;
case ACPI_RSC_COMPARE_VALUE:
+
if (ACPI_GET8(source) != info->value) {
goto exit;
}
case ACPI_RSC_MOVE_GPIO_RES:
case ACPI_RSC_MOVE_SERIAL_VEN:
case ACPI_RSC_MOVE_SERIAL_RES:
+
ACPI_MEMCPY(destination, source, item_count);
return;
*/
case ACPI_RSC_MOVE16:
case ACPI_RSC_MOVE_GPIO_PIN:
+
ACPI_MOVE_16_TO_16(&ACPI_CAST_PTR(u16, destination)[i],
&ACPI_CAST_PTR(u16, source)[i]);
break;
case ACPI_RSC_MOVE32:
+
ACPI_MOVE_32_TO_32(&ACPI_CAST_PTR(u32, destination)[i],
&ACPI_CAST_PTR(u32, source)[i]);
break;
case ACPI_RSC_MOVE64:
+
ACPI_MOVE_64_TO_64(&ACPI_CAST_PTR(u64, destination)[i],
&ACPI_CAST_PTR(u64, source)[i]);
break;
default:
+
return;
}
}
}
info->prefix_node = node;
- info->pathname = METHOD_NAME__SRS;
+ info->relative_pathname = METHOD_NAME__SRS;
info->parameters = args;
info->flags = ACPI_IGNORE_RETURN_VALUE;
break;
default:
+
return (AE_BAD_PARAMETER);
}
ACPI_BIOS_ERROR((AE_INFO,
"Table has invalid signature [%4.4s] (0x%8.8X), "
"must be SSDT or OEMx",
- acpi_ut_valid_acpi_name(*(u32 *)table_desc->
- pointer->
+ acpi_ut_valid_acpi_name(table_desc->pointer->
signature) ?
table_desc->pointer->signature : "????",
*(u32 *)table_desc->pointer->signature));
}
switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
case ACPI_TABLE_ORIGIN_MAPPED:
+
acpi_os_unmap_memory(table_desc->pointer, table_desc->length);
break;
+
case ACPI_TABLE_ORIGIN_ALLOCATED:
+
ACPI_FREE(table_desc->pointer);
break;
/* Not mapped or allocated, there is nothing we can do */
default:
+
return;
}
--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: tbprint - Table output utilities
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "actables.h"
+
+#define _COMPONENT ACPI_TABLES
+ACPI_MODULE_NAME("tbprint")
+
+/* Local prototypes */
+static void acpi_tb_fix_string(char *string, acpi_size length);
+
+static void
+acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
+ struct acpi_table_header *header);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_fix_string
+ *
+ * PARAMETERS: string - String to be repaired
+ * length - Maximum length
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Replace every non-printable or non-ascii byte in the string
+ * with a question mark '?'.
+ *
+ ******************************************************************************/
+
+static void acpi_tb_fix_string(char *string, acpi_size length)
+{
+
+ while (length && *string) {
+ if (!ACPI_IS_PRINT(*string)) {
+ *string = '?';
+ }
+ string++;
+ length--;
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_cleanup_table_header
+ *
+ * PARAMETERS: out_header - Where the cleaned header is returned
+ * header - Input ACPI table header
+ *
+ * RETURN: Returns the cleaned header in out_header
+ *
+ * DESCRIPTION: Copy the table header and ensure that all "string" fields in
+ * the header consist of printable characters.
+ *
+ ******************************************************************************/
+
+static void
+acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
+ struct acpi_table_header *header)
+{
+
+ ACPI_MEMCPY(out_header, header, sizeof(struct acpi_table_header));
+
+ acpi_tb_fix_string(out_header->signature, ACPI_NAME_SIZE);
+ acpi_tb_fix_string(out_header->oem_id, ACPI_OEM_ID_SIZE);
+ acpi_tb_fix_string(out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
+ acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAME_SIZE);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_print_table_header
+ *
+ * PARAMETERS: address - Table physical address
+ * header - Table header
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Print an ACPI table header. Special cases for FACS and RSDP.
+ *
+ ******************************************************************************/
+
+void
+acpi_tb_print_table_header(acpi_physical_address address,
+ struct acpi_table_header *header)
+{
+ struct acpi_table_header local_header;
+
+ /*
+ * The reason that the Address is cast to a void pointer is so that we
+ * can use %p which will work properly on both 32-bit and 64-bit hosts.
+ */
+ if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_FACS)) {
+
+ /* FACS only has signature and length fields */
+
+ ACPI_INFO((AE_INFO, "%4.4s %p %05X",
+ header->signature, ACPI_CAST_PTR(void, address),
+ header->length));
+ } else if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_RSDP)) {
+
+ /* RSDP has no common fields */
+
+ ACPI_MEMCPY(local_header.oem_id,
+ ACPI_CAST_PTR(struct acpi_table_rsdp,
+ header)->oem_id, ACPI_OEM_ID_SIZE);
+ acpi_tb_fix_string(local_header.oem_id, ACPI_OEM_ID_SIZE);
+
+ ACPI_INFO((AE_INFO, "RSDP %p %05X (v%.2d %6.6s)",
+ ACPI_CAST_PTR(void, address),
+ (ACPI_CAST_PTR(struct acpi_table_rsdp, header)->
+ revision >
+ 0) ? ACPI_CAST_PTR(struct acpi_table_rsdp,
+ header)->length : 20,
+ ACPI_CAST_PTR(struct acpi_table_rsdp,
+ header)->revision,
+ local_header.oem_id));
+ } else {
+ /* Standard ACPI table with full common header */
+
+ acpi_tb_cleanup_table_header(&local_header, header);
+
+ ACPI_INFO((AE_INFO,
+ "%4.4s %p %05X (v%.2d %6.6s %8.8s %08X %4.4s %08X)",
+ local_header.signature, ACPI_CAST_PTR(void, address),
+ local_header.length, local_header.revision,
+ local_header.oem_id, local_header.oem_table_id,
+ local_header.oem_revision,
+ local_header.asl_compiler_id,
+ local_header.asl_compiler_revision));
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_validate_checksum
+ *
+ * PARAMETERS: table - ACPI table to verify
+ * length - Length of entire table
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Verifies that the table checksums to zero. Optionally returns
+ * exception on bad checksum.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length)
+{
+ u8 checksum;
+
+ /* Compute the checksum on the table */
+
+ checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length);
+
+ /* Checksum ok? (should be zero) */
+
+ if (checksum) {
+ ACPI_BIOS_WARNING((AE_INFO,
+ "Incorrect checksum in table [%4.4s] - 0x%2.2X, "
+ "should be 0x%2.2X",
+ table->signature, table->checksum,
+ (u8)(table->checksum - checksum)));
+
+#if (ACPI_CHECKSUM_ABORT)
+ return (AE_BAD_CHECKSUM);
+#endif
+ }
+
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_checksum
+ *
+ * PARAMETERS: buffer - Pointer to memory region to be checked
+ * length - Length of this memory region
+ *
+ * RETURN: Checksum (u8)
+ *
+ * DESCRIPTION: Calculates circular checksum of memory region.
+ *
+ ******************************************************************************/
+
+u8 acpi_tb_checksum(u8 *buffer, u32 length)
+{
+ u8 sum = 0;
+ u8 *end = buffer + length;
+
+ while (buffer < end) {
+ sum = (u8)(sum + *(buffer++));
+ }
+
+ return (sum);
+}
/******************************************************************************
*
- * Module Name: tbutils - table utilities
+ * Module Name: tbutils - ACPI Table utilities
*
*****************************************************************************/
ACPI_MODULE_NAME("tbutils")
/* Local prototypes */
-static void acpi_tb_fix_string(char *string, acpi_size length);
-
-static void
-acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
- struct acpi_table_header *header);
-
static acpi_physical_address
acpi_tb_get_root_table_entry(u8 *table_entry, u32 table_entry_size);
return (FALSE);
}
-/*******************************************************************************
- *
- * FUNCTION: acpi_tb_fix_string
- *
- * PARAMETERS: string - String to be repaired
- * length - Maximum length
- *
- * RETURN: None
- *
- * DESCRIPTION: Replace every non-printable or non-ascii byte in the string
- * with a question mark '?'.
- *
- ******************************************************************************/
-
-static void acpi_tb_fix_string(char *string, acpi_size length)
-{
-
- while (length && *string) {
- if (!ACPI_IS_PRINT(*string)) {
- *string = '?';
- }
- string++;
- length--;
- }
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_tb_cleanup_table_header
- *
- * PARAMETERS: out_header - Where the cleaned header is returned
- * header - Input ACPI table header
- *
- * RETURN: Returns the cleaned header in out_header
- *
- * DESCRIPTION: Copy the table header and ensure that all "string" fields in
- * the header consist of printable characters.
- *
- ******************************************************************************/
-
-static void
-acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
- struct acpi_table_header *header)
-{
-
- ACPI_MEMCPY(out_header, header, sizeof(struct acpi_table_header));
-
- acpi_tb_fix_string(out_header->signature, ACPI_NAME_SIZE);
- acpi_tb_fix_string(out_header->oem_id, ACPI_OEM_ID_SIZE);
- acpi_tb_fix_string(out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
- acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAME_SIZE);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_tb_print_table_header
- *
- * PARAMETERS: address - Table physical address
- * header - Table header
- *
- * RETURN: None
- *
- * DESCRIPTION: Print an ACPI table header. Special cases for FACS and RSDP.
- *
- ******************************************************************************/
-
-void
-acpi_tb_print_table_header(acpi_physical_address address,
- struct acpi_table_header *header)
-{
- struct acpi_table_header local_header;
-
- /*
- * The reason that the Address is cast to a void pointer is so that we
- * can use %p which will work properly on both 32-bit and 64-bit hosts.
- */
- if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_FACS)) {
-
- /* FACS only has signature and length fields */
-
- ACPI_INFO((AE_INFO, "%4.4s %p %05X",
- header->signature, ACPI_CAST_PTR(void, address),
- header->length));
- } else if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_RSDP)) {
-
- /* RSDP has no common fields */
-
- ACPI_MEMCPY(local_header.oem_id,
- ACPI_CAST_PTR(struct acpi_table_rsdp,
- header)->oem_id, ACPI_OEM_ID_SIZE);
- acpi_tb_fix_string(local_header.oem_id, ACPI_OEM_ID_SIZE);
-
- ACPI_INFO((AE_INFO, "RSDP %p %05X (v%.2d %6.6s)",
- ACPI_CAST_PTR (void, address),
- (ACPI_CAST_PTR(struct acpi_table_rsdp, header)->
- revision >
- 0) ? ACPI_CAST_PTR(struct acpi_table_rsdp,
- header)->length : 20,
- ACPI_CAST_PTR(struct acpi_table_rsdp,
- header)->revision,
- local_header.oem_id));
- } else {
- /* Standard ACPI table with full common header */
-
- acpi_tb_cleanup_table_header(&local_header, header);
-
- ACPI_INFO((AE_INFO,
- "%4.4s %p %05X (v%.2d %6.6s %8.8s %08X %4.4s %08X)",
- local_header.signature, ACPI_CAST_PTR(void, address),
- local_header.length, local_header.revision,
- local_header.oem_id, local_header.oem_table_id,
- local_header.oem_revision,
- local_header.asl_compiler_id,
- local_header.asl_compiler_revision));
-
- }
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_tb_validate_checksum
- *
- * PARAMETERS: table - ACPI table to verify
- * length - Length of entire table
- *
- * RETURN: Status
- *
- * DESCRIPTION: Verifies that the table checksums to zero. Optionally returns
- * exception on bad checksum.
- *
- ******************************************************************************/
-
-acpi_status acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length)
-{
- u8 checksum;
-
- /* Compute the checksum on the table */
-
- checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length);
-
- /* Checksum ok? (should be zero) */
-
- if (checksum) {
- ACPI_BIOS_WARNING((AE_INFO,
- "Incorrect checksum in table [%4.4s] - 0x%2.2X, "
- "should be 0x%2.2X",
- table->signature, table->checksum,
- (u8)(table->checksum - checksum)));
-
-#if (ACPI_CHECKSUM_ABORT)
-
- return (AE_BAD_CHECKSUM);
-#endif
- }
-
- return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_tb_checksum
- *
- * PARAMETERS: buffer - Pointer to memory region to be checked
- * length - Length of this memory region
- *
- * RETURN: Checksum (u8)
- *
- * DESCRIPTION: Calculates circular checksum of memory region.
- *
- ******************************************************************************/
-
-u8 acpi_tb_checksum(u8 *buffer, u32 length)
-{
- u8 sum = 0;
- u8 *end = buffer + length;
-
- while (buffer < end) {
- sum = (u8) (sum + *(buffer++));
- }
-
- return (sum);
-}
-
/*******************************************************************************
*
* FUNCTION: acpi_tb_check_dsdt_header
/* Local prototypes */
static acpi_status acpi_tb_load_namespace(void);
-static int no_auto_ssdt;
-
/*******************************************************************************
*
* FUNCTION: acpi_load_tables
continue;
}
- if (no_auto_ssdt) {
- printk(KERN_WARNING "ACPI: SSDT ignored due to \"acpi_no_auto_ssdt\"\n");
+ /*
+ * Optionally do not load any SSDTs from the RSDT/XSDT. This can
+ * be useful for debugging ACPI problems on some machines.
+ */
+ if (acpi_gbl_disable_ssdt_table_load) {
+ ACPI_INFO((AE_INFO, "Ignoring %4.4s at %p",
+ acpi_gbl_root_table_list.tables[i].signature.
+ ascii, ACPI_CAST_PTR(void,
+ acpi_gbl_root_table_list.
+ tables[i].address)));
continue;
}
}
ACPI_EXPORT_SYMBOL(acpi_unload_parent_table)
-
-static int __init acpi_no_auto_ssdt_setup(char *s) {
-
- printk(KERN_NOTICE "ACPI: SSDT auto-load disabled\n");
-
- no_auto_ssdt = 1;
-
- return 1;
-}
-
-__setup("acpi_no_auto_ssdt", acpi_no_auto_ssdt_setup);
--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: utbuffer - Buffer dump routines
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+
+#define _COMPONENT ACPI_UTILITIES
+ACPI_MODULE_NAME("utbuffer")
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_dump_buffer
+ *
+ * PARAMETERS: buffer - Buffer to dump
+ * count - Amount to dump, in bytes
+ * display - BYTE, WORD, DWORD, or QWORD display:
+ * DB_BYTE_DISPLAY
+ * DB_WORD_DISPLAY
+ * DB_DWORD_DISPLAY
+ * DB_QWORD_DISPLAY
+ * base_offset - Beginning buffer offset (display only)
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Generic dump buffer in both hex and ascii.
+ *
+ ******************************************************************************/
+void acpi_ut_dump_buffer(u8 *buffer, u32 count, u32 display, u32 base_offset)
+{
+ u32 i = 0;
+ u32 j;
+ u32 temp32;
+ u8 buf_char;
+
+ if (!buffer) {
+ acpi_os_printf("Null Buffer Pointer in DumpBuffer!\n");
+ return;
+ }
+
+ if ((count < 4) || (count & 0x01)) {
+ display = DB_BYTE_DISPLAY;
+ }
+
+ /* Nasty little dump buffer routine! */
+
+ while (i < count) {
+
+ /* Print current offset */
+
+ acpi_os_printf("%6.4X: ", (base_offset + i));
+
+ /* Print 16 hex chars */
+
+ for (j = 0; j < 16;) {
+ if (i + j >= count) {
+
+ /* Dump fill spaces */
+
+ acpi_os_printf("%*s", ((display * 2) + 1), " ");
+ j += display;
+ continue;
+ }
+
+ switch (display) {
+ case DB_BYTE_DISPLAY:
+ default: /* Default is BYTE display */
+
+ acpi_os_printf("%02X ",
+ buffer[(acpi_size) i + j]);
+ break;
+
+ case DB_WORD_DISPLAY:
+
+ ACPI_MOVE_16_TO_32(&temp32,
+ &buffer[(acpi_size) i + j]);
+ acpi_os_printf("%04X ", temp32);
+ break;
+
+ case DB_DWORD_DISPLAY:
+
+ ACPI_MOVE_32_TO_32(&temp32,
+ &buffer[(acpi_size) i + j]);
+ acpi_os_printf("%08X ", temp32);
+ break;
+
+ case DB_QWORD_DISPLAY:
+
+ ACPI_MOVE_32_TO_32(&temp32,
+ &buffer[(acpi_size) i + j]);
+ acpi_os_printf("%08X", temp32);
+
+ ACPI_MOVE_32_TO_32(&temp32,
+ &buffer[(acpi_size) i + j +
+ 4]);
+ acpi_os_printf("%08X ", temp32);
+ break;
+ }
+
+ j += display;
+ }
+
+ /*
+ * Print the ASCII equivalent characters but watch out for the bad
+ * unprintable ones (printable chars are 0x20 through 0x7E)
+ */
+ acpi_os_printf(" ");
+ for (j = 0; j < 16; j++) {
+ if (i + j >= count) {
+ acpi_os_printf("\n");
+ return;
+ }
+
+ buf_char = buffer[(acpi_size) i + j];
+ if (ACPI_IS_PRINT(buf_char)) {
+ acpi_os_printf("%c", buf_char);
+ } else {
+ acpi_os_printf(".");
+ }
+ }
+
+ /* Done with that line. */
+
+ acpi_os_printf("\n");
+ i += 16;
+ }
+
+ return;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_debug_dump_buffer
+ *
+ * PARAMETERS: buffer - Buffer to dump
+ * count - Amount to dump, in bytes
+ * display - BYTE, WORD, DWORD, or QWORD display:
+ * DB_BYTE_DISPLAY
+ * DB_WORD_DISPLAY
+ * DB_DWORD_DISPLAY
+ * DB_QWORD_DISPLAY
+ * component_ID - Caller's component ID
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Generic dump buffer in both hex and ascii.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_debug_dump_buffer(u8 *buffer, u32 count, u32 display, u32 component_id)
+{
+
+ /* Only dump the buffer if tracing is enabled */
+
+ if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
+ (component_id & acpi_dbg_layer))) {
+ return;
+ }
+
+ acpi_ut_dump_buffer(buffer, count, display, 0);
+}
switch (internal_object->reference.class) {
case ACPI_REFCLASS_NAME:
-
/*
* For namepath, return the object handle ("reference")
* We are referring to the namespace node
switch (object_type) {
case ACPI_COPY_TYPE_SIMPLE:
-
/*
* This is a simple or null object
*/
break;
case ACPI_COPY_TYPE_PACKAGE:
-
/*
* Build the package object
*/
break;
default:
+
return (AE_BAD_PARAMETER);
}
return_ACPI_STATUS(AE_OK);
default:
+
/* All other types are not supported */
ACPI_ERROR((AE_INFO,
break;
default:
+
/* Other types can't get here */
+
break;
}
break;
default:
+
/* Nothing to do for other simple objects */
+
break;
}
break;
case ACPI_COPY_TYPE_PACKAGE:
-
/*
* This object is a package - go down another nesting level
* Create and build the package object
break;
default:
+
return (AE_BAD_PARAMETER);
}
/******************************************************************************
*
- * Module Name: utdebug - Debug print routines
+ * Module Name: utdebug - Debug print/trace routines
*
*****************************************************************************/
}
#endif
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_dump_buffer
- *
- * PARAMETERS: buffer - Buffer to dump
- * count - Amount to dump, in bytes
- * display - BYTE, WORD, DWORD, or QWORD display
- * offset - Beginning buffer offset (display only)
- *
- * RETURN: None
- *
- * DESCRIPTION: Generic dump buffer in both hex and ascii.
- *
- ******************************************************************************/
-
-void acpi_ut_dump_buffer(u8 *buffer, u32 count, u32 display, u32 base_offset)
-{
- u32 i = 0;
- u32 j;
- u32 temp32;
- u8 buf_char;
-
- if (!buffer) {
- acpi_os_printf("Null Buffer Pointer in DumpBuffer!\n");
- return;
- }
-
- if ((count < 4) || (count & 0x01)) {
- display = DB_BYTE_DISPLAY;
- }
-
- /* Nasty little dump buffer routine! */
-
- while (i < count) {
-
- /* Print current offset */
-
- acpi_os_printf("%6.4X: ", (base_offset + i));
-
- /* Print 16 hex chars */
-
- for (j = 0; j < 16;) {
- if (i + j >= count) {
-
- /* Dump fill spaces */
-
- acpi_os_printf("%*s", ((display * 2) + 1), " ");
- j += display;
- continue;
- }
-
- switch (display) {
- case DB_BYTE_DISPLAY:
- default: /* Default is BYTE display */
-
- acpi_os_printf("%02X ",
- buffer[(acpi_size) i + j]);
- break;
-
- case DB_WORD_DISPLAY:
-
- ACPI_MOVE_16_TO_32(&temp32,
- &buffer[(acpi_size) i + j]);
- acpi_os_printf("%04X ", temp32);
- break;
-
- case DB_DWORD_DISPLAY:
-
- ACPI_MOVE_32_TO_32(&temp32,
- &buffer[(acpi_size) i + j]);
- acpi_os_printf("%08X ", temp32);
- break;
-
- case DB_QWORD_DISPLAY:
-
- ACPI_MOVE_32_TO_32(&temp32,
- &buffer[(acpi_size) i + j]);
- acpi_os_printf("%08X", temp32);
-
- ACPI_MOVE_32_TO_32(&temp32,
- &buffer[(acpi_size) i + j +
- 4]);
- acpi_os_printf("%08X ", temp32);
- break;
- }
-
- j += display;
- }
-
- /*
- * Print the ASCII equivalent characters but watch out for the bad
- * unprintable ones (printable chars are 0x20 through 0x7E)
- */
- acpi_os_printf(" ");
- for (j = 0; j < 16; j++) {
- if (i + j >= count) {
- acpi_os_printf("\n");
- return;
- }
-
- buf_char = buffer[(acpi_size) i + j];
- if (ACPI_IS_PRINT(buf_char)) {
- acpi_os_printf("%c", buf_char);
- } else {
- acpi_os_printf(".");
- }
- }
-
- /* Done with that line. */
-
- acpi_os_printf("\n");
- i += 16;
- }
-
- return;
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_debug_dump_buffer
- *
- * PARAMETERS: buffer - Buffer to dump
- * count - Amount to dump, in bytes
- * display - BYTE, WORD, DWORD, or QWORD display
- * component_ID - Caller's component ID
- *
- * RETURN: None
- *
- * DESCRIPTION: Generic dump buffer in both hex and ascii.
- *
- ******************************************************************************/
-
-void
-acpi_ut_debug_dump_buffer(u8 *buffer, u32 count, u32 display, u32 component_id)
-{
-
- /* Only dump the buffer if tracing is enabled */
-
- if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
- (component_id & acpi_dbg_layer))) {
- return;
- }
-
- acpi_ut_dump_buffer(buffer, count, display, 0);
-}
break;
default:
+
break;
}
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
case ACPI_TYPE_THERMAL:
-
/*
* Update the notify objects for these types (if present)
* Two lists, system and device notify handlers.
case ACPI_TYPE_REGION:
default:
+
break; /* No subobjects for all other types */
}
--- /dev/null
+/*******************************************************************************
+ *
+ * Module Name: uterror - Various internal error/warning output functions
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+
+#define _COMPONENT ACPI_UTILITIES
+ACPI_MODULE_NAME("uterror")
+
+/*
+ * This module contains internal error functions that may
+ * be configured out.
+ */
+#if !defined (ACPI_NO_ERROR_MESSAGES)
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_predefined_warning
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * pathname - Full pathname to the node
+ * node_flags - From Namespace node for the method/object
+ * format - Printf format string + additional args
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Warnings for the predefined validation module. Messages are
+ * only emitted the first time a problem with a particular
+ * method/object is detected. This prevents a flood of error
+ * messages for methods that are repeatedly evaluated.
+ *
+ ******************************************************************************/
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_predefined_warning(const char *module_name,
+ u32 line_number,
+ char *pathname,
+ u8 node_flags, const char *format, ...)
+{
+ va_list arg_list;
+
+ /*
+ * Warning messages for this method/object will be disabled after the
+ * first time a validation fails or an object is successfully repaired.
+ */
+ if (node_flags & ANOBJ_EVALUATED) {
+ return;
+ }
+
+ acpi_os_printf(ACPI_MSG_WARNING "%s: ", pathname);
+
+ va_start(arg_list, format);
+ acpi_os_vprintf(format, arg_list);
+ ACPI_MSG_SUFFIX;
+ va_end(arg_list);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_predefined_info
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * pathname - Full pathname to the node
+ * node_flags - From Namespace node for the method/object
+ * format - Printf format string + additional args
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Info messages for the predefined validation module. Messages
+ * are only emitted the first time a problem with a particular
+ * method/object is detected. This prevents a flood of
+ * messages for methods that are repeatedly evaluated.
+ *
+ ******************************************************************************/
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_predefined_info(const char *module_name,
+ u32 line_number,
+ char *pathname, u8 node_flags, const char *format, ...)
+{
+ va_list arg_list;
+
+ /*
+ * Warning messages for this method/object will be disabled after the
+ * first time a validation fails or an object is successfully repaired.
+ */
+ if (node_flags & ANOBJ_EVALUATED) {
+ return;
+ }
+
+ acpi_os_printf(ACPI_MSG_INFO "%s: ", pathname);
+
+ va_start(arg_list, format);
+ acpi_os_vprintf(format, arg_list);
+ ACPI_MSG_SUFFIX;
+ va_end(arg_list);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_predefined_bios_error
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * pathname - Full pathname to the node
+ * node_flags - From Namespace node for the method/object
+ * format - Printf format string + additional args
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: BIOS error message for predefined names. Messages
+ * are only emitted the first time a problem with a particular
+ * method/object is detected. This prevents a flood of
+ * messages for methods that are repeatedly evaluated.
+ *
+ ******************************************************************************/
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_predefined_bios_error(const char *module_name,
+ u32 line_number,
+ char *pathname,
+ u8 node_flags, const char *format, ...)
+{
+ va_list arg_list;
+
+ /*
+ * Warning messages for this method/object will be disabled after the
+ * first time a validation fails or an object is successfully repaired.
+ */
+ if (node_flags & ANOBJ_EVALUATED) {
+ return;
+ }
+
+ acpi_os_printf(ACPI_MSG_BIOS_ERROR "%s: ", pathname);
+
+ va_start(arg_list, format);
+ acpi_os_vprintf(format, arg_list);
+ ACPI_MSG_SUFFIX;
+ va_end(arg_list);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_namespace_error
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * internal_name - Name or path of the namespace node
+ * lookup_status - Exception code from NS lookup
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Print error message with the full pathname for the NS node.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_namespace_error(const char *module_name,
+ u32 line_number,
+ const char *internal_name, acpi_status lookup_status)
+{
+ acpi_status status;
+ u32 bad_name;
+ char *name = NULL;
+
+ ACPI_MSG_REDIRECT_BEGIN;
+ acpi_os_printf(ACPI_MSG_ERROR);
+
+ if (lookup_status == AE_BAD_CHARACTER) {
+
+ /* There is a non-ascii character in the name */
+
+ ACPI_MOVE_32_TO_32(&bad_name,
+ ACPI_CAST_PTR(u32, internal_name));
+ acpi_os_printf("[0x%.8X] (NON-ASCII)", bad_name);
+ } else {
+ /* Convert path to external format */
+
+ status = acpi_ns_externalize_name(ACPI_UINT32_MAX,
+ internal_name, NULL, &name);
+
+ /* Print target name */
+
+ if (ACPI_SUCCESS(status)) {
+ acpi_os_printf("[%s]", name);
+ } else {
+ acpi_os_printf("[COULD NOT EXTERNALIZE NAME]");
+ }
+
+ if (name) {
+ ACPI_FREE(name);
+ }
+ }
+
+ acpi_os_printf(" Namespace lookup failure, %s",
+ acpi_format_exception(lookup_status));
+
+ ACPI_MSG_SUFFIX;
+ ACPI_MSG_REDIRECT_END;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_method_error
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * message - Error message to use on failure
+ * prefix_node - Prefix relative to the path
+ * path - Path to the node (optional)
+ * method_status - Execution status
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Print error message with the full pathname for the method.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_method_error(const char *module_name,
+ u32 line_number,
+ const char *message,
+ struct acpi_namespace_node *prefix_node,
+ const char *path, acpi_status method_status)
+{
+ acpi_status status;
+ struct acpi_namespace_node *node = prefix_node;
+
+ ACPI_MSG_REDIRECT_BEGIN;
+ acpi_os_printf(ACPI_MSG_ERROR);
+
+ if (path) {
+ status =
+ acpi_ns_get_node(prefix_node, path, ACPI_NS_NO_UPSEARCH,
+ &node);
+ if (ACPI_FAILURE(status)) {
+ acpi_os_printf("[Could not get node by pathname]");
+ }
+ }
+
+ acpi_ns_print_node_pathname(node, message);
+ acpi_os_printf(", %s", acpi_format_exception(method_status));
+
+ ACPI_MSG_SUFFIX;
+ ACPI_MSG_REDIRECT_END;
+}
+
+#endif /* ACPI_NO_ERROR_MESSAGES */
******************************************************************************/
acpi_status
-acpi_ut_evaluate_object(struct acpi_namespace_node * prefix_node,
+acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node,
char *path,
u32 expected_return_btypes,
union acpi_operand_object **return_desc)
}
info->prefix_node = prefix_node;
- info->pathname = path;
+ info->relative_pathname = path;
/* Evaluate the object/method */
switch ((info->return_object)->common.type) {
case ACPI_TYPE_INTEGER:
+
return_btype = ACPI_BTYPE_INTEGER;
break;
case ACPI_TYPE_BUFFER:
+
return_btype = ACPI_BTYPE_BUFFER;
break;
case ACPI_TYPE_STRING:
+
return_btype = ACPI_BTYPE_STRING;
break;
case ACPI_TYPE_PACKAGE:
+
return_btype = ACPI_BTYPE_PACKAGE;
break;
default:
+
return_btype = 0;
break;
}
break;
default:
+
break;
}
switch (cid_objects[i]->common.type) {
case ACPI_TYPE_INTEGER:
+
string_area_size += ACPI_EISAID_STRING_SIZE;
break;
case ACPI_TYPE_STRING:
+
string_area_size += cid_objects[i]->string.length + 1;
break;
default:
+
status = AE_TYPE;
goto cleanup;
}
switch (type) {
case ACPI_TYPE_METHOD:
+
acpi_os_printf("Executing ");
break;
default:
+
acpi_os_printf("Initializing ");
break;
}
break;
default:
+
/* All others have no secondary object */
break;
}
return (TRUE);
default:
+
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"%p is not not an ACPI operand obj [%s]\n",
object, acpi_ut_get_descriptor_name(object)));
switch (internal_object->reference.class) {
case ACPI_REFCLASS_NAME:
-
/*
* Get the actual length of the full pathname to this object.
* The reference will be converted to the pathname to the object
break;
default:
-
/*
* No other reference opcodes are supported.
* Notably, Locals and Args are not supported, but this may be
switch (object_type) {
case ACPI_COPY_TYPE_SIMPLE:
-
/*
* Simple object - just get the size (Null object/entry is handled
* here also) and sum it into the running package length
u32 i;
u32 j;
+ if (!expected_btypes) {
+ ACPI_STRCPY(buffer, "NONE");
+ return;
+ }
+
j = 1;
buffer[0] = 0;
this_rtype = ACPI_RTYPE_INTEGER;
/* First field in the types list is the count of args to follow */
- arg_count = (argument_types & METHOD_ARG_MASK);
- argument_types >>= METHOD_ARG_BIT_WIDTH;
-
+ arg_count = METHOD_GET_ARG_COUNT(argument_types);
if (arg_count > METHOD_PREDEF_ARGS_MAX) {
printf("**** Invalid argument count (%u) "
"in predefined info structure\n", arg_count);
/* Get each argument from the list, convert to ascii, store to buffer */
for (i = 0; i < arg_count; i++) {
- this_argument_type = (argument_types & METHOD_ARG_MASK);
+ this_argument_type = METHOD_GET_NEXT_TYPE(argument_types);
+
if (!this_argument_type
|| (this_argument_type > METHOD_MAX_ARG_TYPE)) {
printf("**** Invalid argument type (%u) "
strcat(buffer,
ut_external_type_names[this_argument_type] + sub_index);
-
- /* Shift to next argument type field */
-
- argument_types >>= METHOD_ARG_BIT_WIDTH;
sub_index = 0;
}
switch (base) {
case ACPI_ANY_BASE:
case 16:
+
break;
default:
+
/* Invalid Base */
+
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
switch (string[i]) {
case 0x07:
+
acpi_os_printf("\\a"); /* BELL */
break;
case 0x08:
+
acpi_os_printf("\\b"); /* BACKSPACE */
break;
case 0x0C:
+
acpi_os_printf("\\f"); /* FORMFEED */
break;
case 0x0A:
+
acpi_os_printf("\\n"); /* LINEFEED */
break;
case 0x0D:
+
acpi_os_printf("\\r"); /* CARRIAGE RETURN */
break;
case 0x09:
+
acpi_os_printf("\\t"); /* HORIZONTAL TAB */
break;
case 0x0B:
+
acpi_os_printf("\\v"); /* VERTICAL TAB */
break;
case '\'': /* Single Quote */
case '\"': /* Double Quote */
case '\\': /* Backslash */
+
acpi_os_printf("\\%c", (int)string[i]);
break;
*
* FUNCTION: acpi_ut_valid_acpi_name
*
- * PARAMETERS: name - The name to be examined
+ * PARAMETERS: name - The name to be examined. Does not have to
+ * be NULL terminated string.
*
* RETURN: TRUE if the name is valid, FALSE otherwise
*
*
******************************************************************************/
-u8 acpi_ut_valid_acpi_name(u32 name)
+u8 acpi_ut_valid_acpi_name(char *name)
{
u32 i;
ACPI_FUNCTION_ENTRY();
for (i = 0; i < ACPI_NAME_SIZE; i++) {
- if (!acpi_ut_valid_acpi_char
- ((ACPI_CAST_PTR(char, &name))[i], i)) {
+ if (!acpi_ut_valid_acpi_char(name[i], i)) {
return (FALSE);
}
}
switch (ACPI_GET_DESCRIPTOR_TYPE
(descriptor)) {
case ACPI_DESC_TYPE_OPERAND:
+
if (element->size ==
sizeof(union
acpi_operand_object))
break;
case ACPI_DESC_TYPE_PARSER:
+
if (element->size ==
sizeof(union
acpi_parse_object)) {
break;
case ACPI_DESC_TYPE_NAMED:
+
if (element->size ==
sizeof(struct
acpi_namespace_node))
break;
default:
+
break;
}
switch (descriptor_type) {
case ACPI_DESC_TYPE_OPERAND:
+
acpi_os_printf
("%12.12s RefCount 0x%04X\n",
acpi_ut_get_type_name
break;
case ACPI_DESC_TYPE_PARSER:
+
acpi_os_printf
("AmlOpcode 0x%04hX\n",
descriptor->op.asl.
break;
case ACPI_DESC_TYPE_NAMED:
+
acpi_os_printf("%4.4s\n",
acpi_ut_get_node_name
(&descriptor->
break;
default:
+
acpi_os_printf("\n");
break;
}
#include <linux/export.h>
#include <acpi/acpi.h>
#include "accommon.h"
-#include "acnamesp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utxferror")
/*
* This module is used for the in-kernel ACPICA as well as the ACPICA
* tools/applications.
- *
- * For the iASL compiler case, the output is redirected to stderr so that
- * any of the various ACPI errors and warnings do not appear in the output
- * files, for either the compiler or disassembler portions of the tool.
*/
-#ifdef ACPI_ASL_COMPILER
-#include <stdio.h>
-extern FILE *acpi_gbl_output_file;
-
-#define ACPI_MSG_REDIRECT_BEGIN \
- FILE *output_file = acpi_gbl_output_file; \
- acpi_os_redirect_output (stderr);
-
-#define ACPI_MSG_REDIRECT_END \
- acpi_os_redirect_output (output_file);
-
-#else
-/*
- * non-iASL case - no redirection, nothing to do
- */
-#define ACPI_MSG_REDIRECT_BEGIN
-#define ACPI_MSG_REDIRECT_END
-#endif
-/*
- * Common message prefixes
- */
-#define ACPI_MSG_ERROR "ACPI Error: "
-#define ACPI_MSG_EXCEPTION "ACPI Exception: "
-#define ACPI_MSG_WARNING "ACPI Warning: "
-#define ACPI_MSG_INFO "ACPI: "
-#define ACPI_MSG_BIOS_ERROR "ACPI BIOS Bug: Error: "
-#define ACPI_MSG_BIOS_WARNING "ACPI BIOS Bug: Warning: "
-/*
- * Common message suffix
- */
-#define ACPI_MSG_SUFFIX \
- acpi_os_printf (" (%8.8X/%s-%u)\n", ACPI_CA_VERSION, module_name, line_number)
/*******************************************************************************
*
* FUNCTION: acpi_error
}
ACPI_EXPORT_SYMBOL(acpi_bios_warning)
-
-/*
- * The remainder of this module contains internal error functions that may
- * be configured out.
- */
-#if !defined (ACPI_NO_ERROR_MESSAGES) && !defined (ACPI_BIN_APP)
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_predefined_warning
- *
- * PARAMETERS: module_name - Caller's module name (for error output)
- * line_number - Caller's line number (for error output)
- * pathname - Full pathname to the node
- * node_flags - From Namespace node for the method/object
- * format - Printf format string + additional args
- *
- * RETURN: None
- *
- * DESCRIPTION: Warnings for the predefined validation module. Messages are
- * only emitted the first time a problem with a particular
- * method/object is detected. This prevents a flood of error
- * messages for methods that are repeatedly evaluated.
- *
- ******************************************************************************/
-void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_predefined_warning(const char *module_name,
- u32 line_number,
- char *pathname,
- u8 node_flags, const char *format, ...)
-{
- va_list arg_list;
-
- /*
- * Warning messages for this method/object will be disabled after the
- * first time a validation fails or an object is successfully repaired.
- */
- if (node_flags & ANOBJ_EVALUATED) {
- return;
- }
-
- acpi_os_printf(ACPI_MSG_WARNING "For %s: ", pathname);
-
- va_start(arg_list, format);
- acpi_os_vprintf(format, arg_list);
- ACPI_MSG_SUFFIX;
- va_end(arg_list);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_predefined_info
- *
- * PARAMETERS: module_name - Caller's module name (for error output)
- * line_number - Caller's line number (for error output)
- * pathname - Full pathname to the node
- * node_flags - From Namespace node for the method/object
- * format - Printf format string + additional args
- *
- * RETURN: None
- *
- * DESCRIPTION: Info messages for the predefined validation module. Messages
- * are only emitted the first time a problem with a particular
- * method/object is detected. This prevents a flood of
- * messages for methods that are repeatedly evaluated.
- *
- ******************************************************************************/
-
-void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_predefined_info(const char *module_name,
- u32 line_number,
- char *pathname, u8 node_flags, const char *format, ...)
-{
- va_list arg_list;
-
- /*
- * Warning messages for this method/object will be disabled after the
- * first time a validation fails or an object is successfully repaired.
- */
- if (node_flags & ANOBJ_EVALUATED) {
- return;
- }
-
- acpi_os_printf(ACPI_MSG_INFO "For %s: ", pathname);
-
- va_start(arg_list, format);
- acpi_os_vprintf(format, arg_list);
- ACPI_MSG_SUFFIX;
- va_end(arg_list);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_namespace_error
- *
- * PARAMETERS: module_name - Caller's module name (for error output)
- * line_number - Caller's line number (for error output)
- * internal_name - Name or path of the namespace node
- * lookup_status - Exception code from NS lookup
- *
- * RETURN: None
- *
- * DESCRIPTION: Print error message with the full pathname for the NS node.
- *
- ******************************************************************************/
-
-void
-acpi_ut_namespace_error(const char *module_name,
- u32 line_number,
- const char *internal_name, acpi_status lookup_status)
-{
- acpi_status status;
- u32 bad_name;
- char *name = NULL;
-
- ACPI_MSG_REDIRECT_BEGIN;
- acpi_os_printf(ACPI_MSG_ERROR);
-
- if (lookup_status == AE_BAD_CHARACTER) {
-
- /* There is a non-ascii character in the name */
-
- ACPI_MOVE_32_TO_32(&bad_name,
- ACPI_CAST_PTR(u32, internal_name));
- acpi_os_printf("[0x%.8X] (NON-ASCII)", bad_name);
- } else {
- /* Convert path to external format */
-
- status = acpi_ns_externalize_name(ACPI_UINT32_MAX,
- internal_name, NULL, &name);
-
- /* Print target name */
-
- if (ACPI_SUCCESS(status)) {
- acpi_os_printf("[%s]", name);
- } else {
- acpi_os_printf("[COULD NOT EXTERNALIZE NAME]");
- }
-
- if (name) {
- ACPI_FREE(name);
- }
- }
-
- acpi_os_printf(" Namespace lookup failure, %s",
- acpi_format_exception(lookup_status));
-
- ACPI_MSG_SUFFIX;
- ACPI_MSG_REDIRECT_END;
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_method_error
- *
- * PARAMETERS: module_name - Caller's module name (for error output)
- * line_number - Caller's line number (for error output)
- * message - Error message to use on failure
- * prefix_node - Prefix relative to the path
- * path - Path to the node (optional)
- * method_status - Execution status
- *
- * RETURN: None
- *
- * DESCRIPTION: Print error message with the full pathname for the method.
- *
- ******************************************************************************/
-
-void
-acpi_ut_method_error(const char *module_name,
- u32 line_number,
- const char *message,
- struct acpi_namespace_node *prefix_node,
- const char *path, acpi_status method_status)
-{
- acpi_status status;
- struct acpi_namespace_node *node = prefix_node;
-
- ACPI_MSG_REDIRECT_BEGIN;
- acpi_os_printf(ACPI_MSG_ERROR);
-
- if (path) {
- status =
- acpi_ns_get_node(prefix_node, path, ACPI_NS_NO_UPSEARCH,
- &node);
- if (ACPI_FAILURE(status)) {
- acpi_os_printf("[Could not get node by pathname]");
- }
- }
-
- acpi_ns_print_node_pathname(node, message);
- acpi_os_printf(", %s", acpi_format_exception(method_status));
-
- ACPI_MSG_SUFFIX;
- ACPI_MSG_REDIRECT_END;
-}
-
-#endif /* ACPI_NO_ERROR_MESSAGES */
{
int result = -EFAULT;
acpi_status status = 0;
- char *name = test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags)?
+ char *name = test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags) ?
"_BIX" : "_BIF";
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
static void acpi_battery_quirks(struct acpi_battery *battery)
{
if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags))
- return ;
+ return;
- if (battery->full_charge_capacity == 100 &&
- battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN &&
- battery->capacity_now >=0 && battery->capacity_now <= 100) {
+ if (battery->full_charge_capacity == 100 &&
+ battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN &&
+ battery->capacity_now >= 0 && battery->capacity_now <= 100) {
set_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags);
battery->full_charge_capacity = battery->design_capacity;
battery->capacity_now = (battery->capacity_now *
}
if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags))
- return ;
+ return;
if (battery->power_unit && dmi_name_in_vendors("LENOVO")) {
const char *s;
goto end;
seq_printf(seq, "present: %s\n",
- acpi_battery_present(battery)?"yes":"no");
+ acpi_battery_present(battery) ? "yes" : "no");
if (!acpi_battery_present(battery))
goto end;
if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN)
goto end;
seq_printf(seq, "present: %s\n",
- acpi_battery_present(battery)?"yes":"no");
+ acpi_battery_present(battery) ? "yes" : "no");
if (!acpi_battery_present(battery))
goto end;
seq_printf(seq, "capacity state: %s\n",
- (battery->state & 0x04)?"critical":"ok");
+ (battery->state & 0x04) ? "critical" : "ok");
if ((battery->state & 0x01) && (battery->state & 0x02))
seq_printf(seq,
"charging state: charging/discharging\n");
int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
{
- acpi_status status = AE_OK;
-
+ acpi_status status;
if (!device)
return -EINVAL;
int acpi_bus_get_private_data(acpi_handle handle, void **data)
{
- acpi_status status = AE_OK;
+ acpi_status status;
if (!*data)
return -EINVAL;
int acpi_bus_generate_proc_event4(const char *device_class, const char *bus_id, u8 type, int data)
{
struct acpi_bus_event *event;
- unsigned long flags = 0;
+ unsigned long flags;
/* drop event on the floor if no one's listening */
if (!event_is_open)
int acpi_bus_receive_event(struct acpi_bus_event *event)
{
- unsigned long flags = 0;
+ unsigned long flags;
struct acpi_bus_event *entry = NULL;
DECLARE_WAITQUEUE(wait, current);
static int __init acpi_bus_init_irq(void)
{
- acpi_status status = AE_OK;
+ acpi_status status;
union acpi_object arg = { ACPI_TYPE_INTEGER };
struct acpi_object_list arg_list = { 1, &arg };
char *message = NULL;
void __init acpi_early_init(void)
{
- acpi_status status = AE_OK;
+ acpi_status status;
if (acpi_disabled)
return;
static int __init acpi_bus_init(void)
{
- int result = 0;
- acpi_status status = AE_OK;
+ int result;
+ acpi_status status;
extern acpi_status acpi_os_initialize1(void);
acpi_os_initialize1();
EXPORT_SYMBOL(acpi_bus_can_wakeup);
/**
- * acpi_device_power_state - Get preferred power state of ACPI device.
+ * acpi_dev_pm_get_state - Get preferred power state of ACPI device.
* @dev: Device whose preferred target power state to return.
* @adev: ACPI device node corresponding to @dev.
* @target_state: System state to match the resultant device state.
- * @d_max_in: Deepest low-power state to take into consideration.
- * @d_min_p: Location to store the upper limit of the allowed states range.
- * Return value: Preferred power state of the device on success, -ENODEV
- * (if there's no 'struct acpi_device' for @dev) or -EINVAL on failure
+ * @d_min_p: Location to store the highest power state available to the device.
+ * @d_max_p: Location to store the lowest power state available to the device.
*
- * Find the lowest power (highest number) ACPI device power state that the
- * device can be in while the system is in the state represented by
- * @target_state. If @d_min_p is set, the highest power (lowest number) device
- * power state that @dev can be in for the given system sleep state is stored
- * at the location pointed to by it.
+ * Find the lowest power (highest number) and highest power (lowest number) ACPI
+ * device power states that the device can be in while the system is in the
+ * state represented by @target_state. Store the integer numbers representing
+ * those stats in the memory locations pointed to by @d_max_p and @d_min_p,
+ * respectively.
*
* Callers must ensure that @dev and @adev are valid pointers and that @adev
* actually corresponds to @dev before using this function.
+ *
+ * Returns 0 on success or -ENODATA when one of the ACPI methods fails or
+ * returns a value that doesn't make sense. The memory locations pointed to by
+ * @d_max_p and @d_min_p are only modified on success.
*/
-int acpi_device_power_state(struct device *dev, struct acpi_device *adev,
- u32 target_state, int d_max_in, int *d_min_p)
+static int acpi_dev_pm_get_state(struct device *dev, struct acpi_device *adev,
+ u32 target_state, int *d_min_p, int *d_max_p)
{
- char acpi_method[] = "_SxD";
- unsigned long long d_min, d_max;
+ char method[] = { '_', 'S', '0' + target_state, 'D', '\0' };
+ acpi_handle handle = adev->handle;
+ unsigned long long ret;
+ int d_min, d_max;
bool wakeup = false;
+ acpi_status status;
- if (d_max_in < ACPI_STATE_D0 || d_max_in > ACPI_STATE_D3)
- return -EINVAL;
-
- if (d_max_in > ACPI_STATE_D3_HOT) {
- enum pm_qos_flags_status stat;
-
- stat = dev_pm_qos_flags(dev, PM_QOS_FLAG_NO_POWER_OFF);
- if (stat == PM_QOS_FLAGS_ALL)
- d_max_in = ACPI_STATE_D3_HOT;
- }
-
- acpi_method[2] = '0' + target_state;
/*
- * If the sleep state is S0, the lowest limit from ACPI is D3,
- * but if the device has _S0W, we will use the value from _S0W
- * as the lowest limit from ACPI. Finally, we will constrain
- * the lowest limit with the specified one.
+ * If the system state is S0, the lowest power state the device can be
+ * in is D3cold, unless the device has _S0W and is supposed to signal
+ * wakeup, in which case the return value of _S0W has to be used as the
+ * lowest power state available to the device.
*/
d_min = ACPI_STATE_D0;
- d_max = ACPI_STATE_D3;
+ d_max = ACPI_STATE_D3_COLD;
/*
* If present, _SxD methods return the minimum D-state (highest power
* state) we can use for the corresponding S-states. Otherwise, the
* minimum D-state is D0 (ACPI 3.x).
- *
- * NOTE: We rely on acpi_evaluate_integer() not clobbering the integer
- * provided -- that's our fault recovery, we ignore retval.
*/
if (target_state > ACPI_STATE_S0) {
- acpi_evaluate_integer(adev->handle, acpi_method, NULL, &d_min);
+ /*
+ * We rely on acpi_evaluate_integer() not clobbering the integer
+ * provided if AE_NOT_FOUND is returned.
+ */
+ ret = d_min;
+ status = acpi_evaluate_integer(handle, method, NULL, &ret);
+ if ((ACPI_FAILURE(status) && status != AE_NOT_FOUND)
+ || ret > ACPI_STATE_D3_COLD)
+ return -ENODATA;
+
+ /*
+ * We need to handle legacy systems where D3hot and D3cold are
+ * the same and 3 is returned in both cases, so fall back to
+ * D3cold if D3hot is not a valid state.
+ */
+ if (!adev->power.states[ret].flags.valid) {
+ if (ret == ACPI_STATE_D3_HOT)
+ ret = ACPI_STATE_D3_COLD;
+ else
+ return -ENODATA;
+ }
+ d_min = ret;
wakeup = device_may_wakeup(dev) && adev->wakeup.flags.valid
&& adev->wakeup.sleep_state >= target_state;
} else if (dev_pm_qos_flags(dev, PM_QOS_FLAG_REMOTE_WAKEUP) !=
* can wake the system. _S0W may be valid, too.
*/
if (wakeup) {
- acpi_status status;
-
- acpi_method[3] = 'W';
- status = acpi_evaluate_integer(adev->handle, acpi_method, NULL,
- &d_max);
- if (ACPI_FAILURE(status)) {
- if (target_state != ACPI_STATE_S0 ||
- status != AE_NOT_FOUND)
+ method[3] = 'W';
+ status = acpi_evaluate_integer(handle, method, NULL, &ret);
+ if (status == AE_NOT_FOUND) {
+ if (target_state > ACPI_STATE_S0)
d_max = d_min;
- } else if (d_max < d_min) {
- /* Warn the user of the broken DSDT */
- printk(KERN_WARNING "ACPI: Wrong value from %s\n",
- acpi_method);
- /* Sanitize it */
- d_min = d_max;
+ } else if (ACPI_SUCCESS(status) && ret <= ACPI_STATE_D3_COLD) {
+ /* Fall back to D3cold if ret is not a valid state. */
+ if (!adev->power.states[ret].flags.valid)
+ ret = ACPI_STATE_D3_COLD;
+
+ d_max = ret > d_min ? ret : d_min;
+ } else {
+ return -ENODATA;
}
}
- if (d_max_in < d_min)
- return -EINVAL;
if (d_min_p)
*d_min_p = d_min;
- /* constrain d_max with specified lowest limit (max number) */
- if (d_max > d_max_in) {
- for (d_max = d_max_in; d_max > d_min; d_max--) {
- if (adev->power.states[d_max].flags.valid)
- break;
- }
- }
- return d_max;
+
+ if (d_max_p)
+ *d_max_p = d_max;
+
+ return 0;
}
-EXPORT_SYMBOL_GPL(acpi_device_power_state);
/**
* acpi_pm_device_sleep_state - Get preferred power state of ACPI device.
* @d_min_p: Location to store the upper limit of the allowed states range.
* @d_max_in: Deepest low-power state to take into consideration.
* Return value: Preferred power state of the device on success, -ENODEV
- * (if there's no 'struct acpi_device' for @dev) or -EINVAL on failure
+ * if there's no 'struct acpi_device' for @dev, -EINVAL if @d_max_in is
+ * incorrect, or -ENODATA on ACPI method failure.
*
* The caller must ensure that @dev is valid before using this function.
*/
{
acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
struct acpi_device *adev;
+ int ret, d_min, d_max;
+
+ if (d_max_in < ACPI_STATE_D0 || d_max_in > ACPI_STATE_D3_COLD)
+ return -EINVAL;
+
+ if (d_max_in > ACPI_STATE_D3_HOT) {
+ enum pm_qos_flags_status stat;
+
+ stat = dev_pm_qos_flags(dev, PM_QOS_FLAG_NO_POWER_OFF);
+ if (stat == PM_QOS_FLAGS_ALL)
+ d_max_in = ACPI_STATE_D3_HOT;
+ }
if (!handle || acpi_bus_get_device(handle, &adev)) {
dev_dbg(dev, "ACPI handle without context in %s!\n", __func__);
return -ENODEV;
}
- return acpi_device_power_state(dev, adev, acpi_target_system_state(),
- d_max_in, d_min_p);
+ ret = acpi_dev_pm_get_state(dev, adev, acpi_target_system_state(),
+ &d_min, &d_max);
+ if (ret)
+ return ret;
+
+ if (d_max_in < d_min)
+ return -EINVAL;
+
+ if (d_max > d_max_in) {
+ for (d_max = d_max_in; d_max > d_min; d_max--) {
+ if (adev->power.states[d_max].flags.valid)
+ break;
+ }
+ }
+
+ if (d_min_p)
+ *d_min_p = d_min;
+
+ return d_max;
}
EXPORT_SYMBOL(acpi_pm_device_sleep_state);
static int acpi_dev_pm_low_power(struct device *dev, struct acpi_device *adev,
u32 system_state)
{
- int power_state;
+ int ret, state;
if (!acpi_device_power_manageable(adev))
return 0;
- power_state = acpi_device_power_state(dev, adev, system_state,
- ACPI_STATE_D3, NULL);
- if (power_state < ACPI_STATE_D0 || power_state > ACPI_STATE_D3)
- return -EIO;
-
- return acpi_device_set_power(adev, power_state);
+ ret = acpi_dev_pm_get_state(dev, adev, system_state, NULL, &state);
+ return ret ? ret : acpi_device_set_power(adev, state);
}
/**
#ifdef CONFIG_PM_RUNTIME
.runtime_suspend = acpi_subsys_runtime_suspend,
.runtime_resume = acpi_subsys_runtime_resume,
- .runtime_idle = pm_generic_runtime_idle,
#endif
#ifdef CONFIG_PM_SLEEP
.prepare = acpi_subsys_prepare,
spinlock_t dd_lock;
struct mutex hp_lock;
struct list_head dependent_devices;
- struct list_head hotplug_devices;
struct list_head sibling;
struct platform_device *dock_device;
};
static LIST_HEAD(dock_stations);
static int dock_station_count;
+static DEFINE_MUTEX(hotplug_lock);
struct dock_dependent_device {
struct list_head list;
- struct list_head hotplug_list;
acpi_handle handle;
- const struct acpi_dock_ops *ops;
- void *context;
+ const struct acpi_dock_ops *hp_ops;
+ void *hp_context;
+ unsigned int hp_refcount;
+ void (*hp_release)(void *);
};
#define DOCK_DOCKING 0x00000001
dd->handle = handle;
INIT_LIST_HEAD(&dd->list);
- INIT_LIST_HEAD(&dd->hotplug_list);
spin_lock(&ds->dd_lock);
list_add_tail(&dd->list, &ds->dependent_devices);
}
/**
- * dock_add_hotplug_device - associate a hotplug handler with the dock station
- * @ds: The dock station
- * @dd: The dependent device struct
- *
- * Add the dependent device to the dock's hotplug device list
+ * dock_init_hotplug - Initialize a hotplug device on a docking station.
+ * @dd: Dock-dependent device.
+ * @ops: Dock operations to attach to the dependent device.
+ * @context: Data to pass to the @ops callbacks and @release.
+ * @init: Optional initialization routine to run after setting up context.
+ * @release: Optional release routine to run on removal.
*/
-static void
-dock_add_hotplug_device(struct dock_station *ds,
- struct dock_dependent_device *dd)
+static int dock_init_hotplug(struct dock_dependent_device *dd,
+ const struct acpi_dock_ops *ops, void *context,
+ void (*init)(void *), void (*release)(void *))
{
- mutex_lock(&ds->hp_lock);
- list_add_tail(&dd->hotplug_list, &ds->hotplug_devices);
- mutex_unlock(&ds->hp_lock);
+ int ret = 0;
+
+ mutex_lock(&hotplug_lock);
+
+ if (dd->hp_context) {
+ ret = -EEXIST;
+ } else {
+ dd->hp_refcount = 1;
+ dd->hp_ops = ops;
+ dd->hp_context = context;
+ dd->hp_release = release;
+ }
+
+ if (!WARN_ON(ret) && init)
+ init(context);
+
+ mutex_unlock(&hotplug_lock);
+ return ret;
}
/**
- * dock_del_hotplug_device - remove a hotplug handler from the dock station
- * @ds: The dock station
- * @dd: the dependent device struct
+ * dock_release_hotplug - Decrement hotplug reference counter of dock device.
+ * @dd: Dock-dependent device.
*
- * Delete the dependent device from the dock's hotplug device list
+ * Decrement the reference counter of @dd and if 0, detach its hotplug
+ * operations from it, reset its context pointer and run the optional release
+ * routine if present.
*/
-static void
-dock_del_hotplug_device(struct dock_station *ds,
- struct dock_dependent_device *dd)
+static void dock_release_hotplug(struct dock_dependent_device *dd)
{
- mutex_lock(&ds->hp_lock);
- list_del(&dd->hotplug_list);
- mutex_unlock(&ds->hp_lock);
+ void (*release)(void *) = NULL;
+ void *context = NULL;
+
+ mutex_lock(&hotplug_lock);
+
+ if (dd->hp_context && !--dd->hp_refcount) {
+ dd->hp_ops = NULL;
+ context = dd->hp_context;
+ dd->hp_context = NULL;
+ release = dd->hp_release;
+ dd->hp_release = NULL;
+ }
+
+ if (release && context)
+ release(context);
+
+ mutex_unlock(&hotplug_lock);
+}
+
+static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event,
+ bool uevent)
+{
+ acpi_notify_handler cb = NULL;
+ bool run = false;
+
+ mutex_lock(&hotplug_lock);
+
+ if (dd->hp_context) {
+ run = true;
+ dd->hp_refcount++;
+ if (dd->hp_ops)
+ cb = uevent ? dd->hp_ops->uevent : dd->hp_ops->handler;
+ }
+
+ mutex_unlock(&hotplug_lock);
+
+ if (!run)
+ return;
+
+ if (cb)
+ cb(dd->handle, event, dd->hp_context);
+
+ dock_release_hotplug(dd);
}
/**
/*
* First call driver specific hotplug functions
*/
- list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list)
- if (dd->ops && dd->ops->handler)
- dd->ops->handler(dd->handle, event, dd->context);
+ list_for_each_entry(dd, &ds->dependent_devices, list)
+ dock_hotplug_event(dd, event, false);
/*
* Now make sure that an acpi_device is created for each
if (num == DOCK_EVENT)
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
- list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list)
- if (dd->ops && dd->ops->uevent)
- dd->ops->uevent(dd->handle, event, dd->context);
+ list_for_each_entry(dd, &ds->dependent_devices, list)
+ dock_hotplug_event(dd, event, true);
if (num != DOCK_EVENT)
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
* @handle: the handle of the device
* @ops: handlers to call after docking
* @context: device specific data
+ * @init: Optional initialization routine to run after registration
+ * @release: Optional release routine to run on unregistration
*
* If a driver would like to perform a hotplug operation after a dock
* event, they can register an acpi_notifiy_handler to be called by
* the dock driver after _DCK is executed.
*/
-int
-register_hotplug_dock_device(acpi_handle handle, const struct acpi_dock_ops *ops,
- void *context)
+int register_hotplug_dock_device(acpi_handle handle,
+ const struct acpi_dock_ops *ops, void *context,
+ void (*init)(void *), void (*release)(void *))
{
struct dock_dependent_device *dd;
struct dock_station *dock_station;
int ret = -EINVAL;
+ if (WARN_ON(!context))
+ return -EINVAL;
+
if (!dock_station_count)
return -ENODEV;
* ops
*/
dd = find_dock_dependent_device(dock_station, handle);
- if (dd) {
- dd->ops = ops;
- dd->context = context;
- dock_add_hotplug_device(dock_station, dd);
+ if (dd && !dock_init_hotplug(dd, ops, context, init, release))
ret = 0;
- }
}
return ret;
list_for_each_entry(dock_station, &dock_stations, sibling) {
dd = find_dock_dependent_device(dock_station, handle);
if (dd)
- dock_del_hotplug_device(dock_station, dd);
+ dock_release_hotplug(dd);
}
}
EXPORT_SYMBOL_GPL(unregister_hotplug_dock_device);
mutex_init(&dock_station->hp_lock);
spin_lock_init(&dock_station->dd_lock);
INIT_LIST_HEAD(&dock_station->sibling);
- INIT_LIST_HEAD(&dock_station->hotplug_devices);
ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list);
INIT_LIST_HEAD(&dock_station->dependent_devices);
return ret;
}
-/**
- * dock_remove - free up resources related to the dock station
- */
-static int dock_remove(struct dock_station *ds)
-{
- struct dock_dependent_device *dd, *tmp;
- struct platform_device *dock_device = ds->dock_device;
-
- if (!dock_station_count)
- return 0;
-
- /* remove dependent devices */
- list_for_each_entry_safe(dd, tmp, &ds->dependent_devices, list)
- kfree(dd);
-
- list_del(&ds->sibling);
-
- /* cleanup sysfs */
- sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group);
- platform_device_unregister(dock_device);
-
- return 0;
-}
-
/**
* find_dock_and_bay - look for dock stations and bays
* @handle: acpi handle of a device
return AE_OK;
}
-static int __init dock_init(void)
+int __init acpi_dock_init(void)
{
if (acpi_disabled)
return 0;
ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count);
return 0;
}
-
-static void __exit dock_exit(void)
-{
- struct dock_station *tmp, *dock_station;
-
- unregister_acpi_bus_notifier(&dock_acpi_notifier);
- list_for_each_entry_safe(dock_station, tmp, &dock_stations, sibling)
- dock_remove(dock_station);
-}
-
-/*
- * Must be called before drivers of devices in dock, otherwise we can't know
- * which devices are in a dock
- */
-subsys_initcall(dock_init);
-module_exit(dock_exit);
ec_enlarge_storm_threshold, "CLEVO hardware", {
DMI_MATCH(DMI_SYS_VENDOR, "CLEVO Co."),
DMI_MATCH(DMI_PRODUCT_NAME, "M720T/M730T"),}, NULL},
+ {
+ ec_skip_dsdt_scan, "HP Folio 13", {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13"),}, NULL},
{},
};
#include <linux/acpi.h>
#include <linux/debugfs.h>
#include <linux/module.h>
+#include <linux/uaccess.h>
#include "internal.h"
MODULE_AUTHOR("Thomas Renninger <trenn@suse.de>");
* struct acpi_ec *ec = ((struct seq_file *)f->private_data)->private;
*/
unsigned int size = EC_SPACE_SIZE;
- u8 *data = (u8 *) buf;
loff_t init_off = *off;
int err = 0;
size = count;
while (size) {
- err = ec_read(*off, &data[*off - init_off]);
+ u8 byte_read;
+ err = ec_read(*off, &byte_read);
if (err)
return err;
+ if (put_user(byte_read, buf + *off - init_off)) {
+ if (*off - init_off)
+ return *off - init_off; /* partial read */
+ return -EFAULT;
+ }
*off += 1;
size--;
}
unsigned int size = count;
loff_t init_off = *off;
- u8 *data = (u8 *) buf;
int err = 0;
if (*off >= EC_SPACE_SIZE)
}
while (size) {
- u8 byte_write = data[*off - init_off];
+ u8 byte_write;
+ if (get_user(byte_write, buf + *off - init_off)) {
+ if (*off - init_off)
+ return *off - init_off; /* partial write */
+ return -EFAULT;
+ }
err = ec_write(*off, byte_write);
if (err)
return err;
static acpi_status do_acpi_find_child(acpi_handle handle, u32 lvl_not_used,
void *addr_p, void **ret_p)
{
- unsigned long long addr;
+ unsigned long long addr, sta;
acpi_status status;
status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &addr);
if (ACPI_SUCCESS(status) && addr == *((u64 *)addr_p)) {
*ret_p = handle;
- return AE_CTRL_TERMINATE;
+ status = acpi_bus_get_status_handle(handle, &sta);
+ if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_ENABLED))
+ return AE_CTRL_TERMINATE;
}
return AE_OK;
}
}
EXPORT_SYMBOL(acpi_get_child);
-static int acpi_bind_one(struct device *dev, acpi_handle handle)
+int acpi_bind_one(struct device *dev, acpi_handle handle)
{
struct acpi_device *acpi_dev;
acpi_status status;
kfree(physical_node);
goto err;
}
+EXPORT_SYMBOL_GPL(acpi_bind_one);
-static int acpi_unbind_one(struct device *dev)
+int acpi_unbind_one(struct device *dev)
{
struct acpi_device_physical_node *entry;
struct acpi_device *acpi_dev;
dev_err(dev, "Oops, 'acpi_handle' corrupt\n");
return -EINVAL;
}
+EXPORT_SYMBOL_GPL(acpi_unbind_one);
static int acpi_platform_notify(struct device *dev)
{
void acpi_pci_root_init(void);
void acpi_pci_link_init(void);
void acpi_pci_root_hp_init(void);
+void acpi_processor_init(void);
void acpi_platform_init(void);
int acpi_sysfs_init(void);
#ifdef CONFIG_ACPI_CONTAINER
#else
static inline void acpi_container_init(void) {}
#endif
+#ifdef CONFIG_ACPI_DOCK
+void acpi_dock_init(void);
+#else
+static inline void acpi_dock_init(void) {}
+#endif
#ifdef CONFIG_ACPI_HOTPLUG_MEMORY
void acpi_memory_hotplug_init(void);
#else
static inline void acpi_memory_hotplug_init(void) {}
#endif
+#ifdef CONFIG_X86
+void acpi_cmos_rtc_init(void);
+#else
+static inline void acpi_cmos_rtc_init(void) {}
+#endif
+
+extern bool acpi_force_hot_remove;
void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
const char *name);
int type, unsigned long long sta);
void acpi_device_add_finalize(struct acpi_device *device);
void acpi_free_pnp_ids(struct acpi_device_pnp *pnp);
+int acpi_bind_one(struct device *dev, acpi_handle handle);
+int acpi_unbind_one(struct device *dev);
/* --------------------------------------------------------------------------
Power Resource
*/
u64 acpi_os_get_timer(void)
{
- static u64 t;
-
-#ifdef CONFIG_HPET
- /* TBD: use HPET if available */
-#endif
-
-#ifdef CONFIG_X86_PM_TIMER
- /* TBD: default to PM timer if HPET was not available */
-#endif
- if (!t)
- printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n");
-
- return ++t;
+ u64 time_ns = ktime_to_ns(ktime_get());
+ do_div(time_ns, 100);
+ return time_ns;
}
acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width)
}
#endif
+static int __init acpi_no_auto_ssdt_setup(char *s)
+{
+ printk(KERN_NOTICE PREFIX "SSDT auto-load disabled\n");
+
+ acpi_gbl_disable_ssdt_table_load = TRUE;
+
+ return 1;
+}
+
+__setup("acpi_no_auto_ssdt", acpi_no_auto_ssdt_setup);
+
acpi_status __init acpi_os_initialize(void)
{
acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1a_event_block);
/*
- * acpi_processor.c - ACPI Processor Driver ($Revision: 71 $)
+ * processor_driver.c - ACPI Processor Driver
*
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
* Copyright (C) 2004 Dominik Brodowski <linux@brodo.de>
* Copyright (C) 2004 Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
* - Added processor hotplug support
+ * Copyright (C) 2013, Intel Corporation
+ * Rafael J. Wysocki <rafael.j.wysocki@intel.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- * TBD:
- * 1. Make # power states dynamic.
- * 2. Support duty_cycle values that span bit 4.
- * 3. Optimize by having scheduler determine business instead of
- * having us try to calculate it here.
- * 4. Need C1 timing -- must modify kernel (IRQ handler) to get this.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/pm.h>
#include <linux/cpufreq.h>
#include <linux/cpu.h>
-#include <linux/dmi.h>
-#include <linux/moduleparam.h>
#include <linux/cpuidle.h>
#include <linux/slab.h>
#include <linux/acpi.h>
-#include <linux/memory_hotplug.h>
-
-#include <asm/io.h>
-#include <asm/cpu.h>
-#include <asm/delay.h>
-#include <asm/uaccess.h>
-#include <asm/processor.h>
-#include <asm/smp.h>
-#include <asm/acpi.h>
-
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
+
#include <acpi/processor.h>
+#include "internal.h"
+
#define PREFIX "ACPI: "
-#define ACPI_PROCESSOR_CLASS "processor"
-#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
-#define ACPI_PROCESSOR_FILE_INFO "info"
-#define ACPI_PROCESSOR_FILE_THROTTLING "throttling"
-#define ACPI_PROCESSOR_FILE_LIMIT "limit"
#define ACPI_PROCESSOR_NOTIFY_PERFORMANCE 0x80
#define ACPI_PROCESSOR_NOTIFY_POWER 0x81
#define ACPI_PROCESSOR_NOTIFY_THROTTLING 0x82
-#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
-
-#define ACPI_PROCESSOR_LIMIT_USER 0
-#define ACPI_PROCESSOR_LIMIT_THERMAL 1
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
ACPI_MODULE_NAME("processor_driver");
MODULE_DESCRIPTION("ACPI Processor Driver");
MODULE_LICENSE("GPL");
-static int acpi_processor_add(struct acpi_device *device);
-static int acpi_processor_remove(struct acpi_device *device);
-static void acpi_processor_notify(struct acpi_device *device, u32 event);
-static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr);
-static int acpi_processor_handle_eject(struct acpi_processor *pr);
-static int acpi_processor_start(struct acpi_processor *pr);
+static int acpi_processor_start(struct device *dev);
+static int acpi_processor_stop(struct device *dev);
static const struct acpi_device_id processor_device_ids[] = {
{ACPI_PROCESSOR_OBJECT_HID, 0},
};
MODULE_DEVICE_TABLE(acpi, processor_device_ids);
-static struct acpi_driver acpi_processor_driver = {
+static struct device_driver acpi_processor_driver = {
.name = "processor",
- .class = ACPI_PROCESSOR_CLASS,
- .ids = processor_device_ids,
- .ops = {
- .add = acpi_processor_add,
- .remove = acpi_processor_remove,
- .notify = acpi_processor_notify,
- },
+ .bus = &cpu_subsys,
+ .acpi_match_table = processor_device_ids,
+ .probe = acpi_processor_start,
+ .remove = acpi_processor_stop,
};
-#define INSTALL_NOTIFY_HANDLER 1
-#define UNINSTALL_NOTIFY_HANDLER 2
-
-DEFINE_PER_CPU(struct acpi_processor *, processors);
-EXPORT_PER_CPU_SYMBOL(processors);
-
-struct acpi_processor_errata errata __read_mostly;
-
-/* --------------------------------------------------------------------------
- Errata Handling
- -------------------------------------------------------------------------- */
-
-static int acpi_processor_errata_piix4(struct pci_dev *dev)
-{
- u8 value1 = 0;
- u8 value2 = 0;
-
-
- if (!dev)
- return -EINVAL;
-
- /*
- * Note that 'dev' references the PIIX4 ACPI Controller.
- */
-
- switch (dev->revision) {
- case 0:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 A-step\n"));
- break;
- case 1:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 B-step\n"));
- break;
- case 2:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4E\n"));
- break;
- case 3:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4M\n"));
- break;
- default:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found unknown PIIX4\n"));
- break;
- }
-
- switch (dev->revision) {
-
- case 0: /* PIIX4 A-step */
- case 1: /* PIIX4 B-step */
- /*
- * See specification changes #13 ("Manual Throttle Duty Cycle")
- * and #14 ("Enabling and Disabling Manual Throttle"), plus
- * erratum #5 ("STPCLK# Deassertion Time") from the January
- * 2002 PIIX4 specification update. Applies to only older
- * PIIX4 models.
- */
- errata.piix4.throttle = 1;
-
- case 2: /* PIIX4E */
- case 3: /* PIIX4M */
- /*
- * See erratum #18 ("C3 Power State/BMIDE and Type-F DMA
- * Livelock") from the January 2002 PIIX4 specification update.
- * Applies to all PIIX4 models.
- */
-
- /*
- * BM-IDE
- * ------
- * Find the PIIX4 IDE Controller and get the Bus Master IDE
- * Status register address. We'll use this later to read
- * each IDE controller's DMA status to make sure we catch all
- * DMA activity.
- */
- dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
- PCI_DEVICE_ID_INTEL_82371AB,
- PCI_ANY_ID, PCI_ANY_ID, NULL);
- if (dev) {
- errata.piix4.bmisx = pci_resource_start(dev, 4);
- pci_dev_put(dev);
- }
-
- /*
- * Type-F DMA
- * ----------
- * Find the PIIX4 ISA Controller and read the Motherboard
- * DMA controller's status to see if Type-F (Fast) DMA mode
- * is enabled (bit 7) on either channel. Note that we'll
- * disable C3 support if this is enabled, as some legacy
- * devices won't operate well if fast DMA is disabled.
- */
- dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
- PCI_DEVICE_ID_INTEL_82371AB_0,
- PCI_ANY_ID, PCI_ANY_ID, NULL);
- if (dev) {
- pci_read_config_byte(dev, 0x76, &value1);
- pci_read_config_byte(dev, 0x77, &value2);
- if ((value1 & 0x80) || (value2 & 0x80))
- errata.piix4.fdma = 1;
- pci_dev_put(dev);
- }
-
- break;
- }
-
- if (errata.piix4.bmisx)
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Bus master activity detection (BM-IDE) erratum enabled\n"));
- if (errata.piix4.fdma)
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Type-F DMA livelock erratum (C3 disabled)\n"));
-
- return 0;
-}
-
-static int acpi_processor_errata(struct acpi_processor *pr)
+static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
{
- int result = 0;
- struct pci_dev *dev = NULL;
-
-
- if (!pr)
- return -EINVAL;
-
- /*
- * PIIX4
- */
- dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
- PCI_DEVICE_ID_INTEL_82371AB_3, PCI_ANY_ID,
- PCI_ANY_ID, NULL);
- if (dev) {
- result = acpi_processor_errata_piix4(dev);
- pci_dev_put(dev);
- }
-
- return result;
-}
-
-/* --------------------------------------------------------------------------
- Driver Interface
- -------------------------------------------------------------------------- */
-
-static int acpi_processor_get_info(struct acpi_device *device)
-{
- acpi_status status = 0;
- union acpi_object object = { 0 };
- struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
+ struct acpi_device *device = data;
struct acpi_processor *pr;
- int cpu_index, device_declaration = 0;
- static int cpu0_initialized;
-
- pr = acpi_driver_data(device);
- if (!pr)
- return -EINVAL;
-
- if (num_online_cpus() > 1)
- errata.smp = TRUE;
-
- acpi_processor_errata(pr);
-
- /*
- * Check to see if we have bus mastering arbitration control. This
- * is required for proper C3 usage (to maintain cache coherency).
- */
- if (acpi_gbl_FADT.pm2_control_block && acpi_gbl_FADT.pm2_control_length) {
- pr->flags.bm_control = 1;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Bus mastering arbitration control present\n"));
- } else
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "No bus mastering arbitration control\n"));
-
- if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
- /* Declared with "Processor" statement; match ProcessorID */
- status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
- if (ACPI_FAILURE(status)) {
- dev_err(&device->dev,
- "Failed to evaluate processor object (0x%x)\n",
- status);
- return -ENODEV;
- }
-
- /*
- * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
- * >>> 'acpi_get_processor_id(acpi_id, &id)' in
- * arch/xxx/acpi.c
- */
- pr->acpi_id = object.processor.proc_id;
- } else {
- /*
- * Declared with "Device" statement; match _UID.
- * Note that we don't handle string _UIDs yet.
- */
- unsigned long long value;
- status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
- NULL, &value);
- if (ACPI_FAILURE(status)) {
- dev_err(&device->dev,
- "Failed to evaluate processor _UID (0x%x)\n",
- status);
- return -ENODEV;
- }
- device_declaration = 1;
- pr->acpi_id = value;
- }
- cpu_index = acpi_get_cpuid(pr->handle, device_declaration, pr->acpi_id);
-
- /* Handle UP system running SMP kernel, with no LAPIC in MADT */
- if (!cpu0_initialized && (cpu_index == -1) &&
- (num_online_cpus() == 1)) {
- cpu_index = 0;
- }
-
- cpu0_initialized = 1;
-
- pr->id = cpu_index;
-
- /*
- * Extra Processor objects may be enumerated on MP systems with
- * less than the max # of CPUs. They should be ignored _iff
- * they are physically not present.
- */
- if (pr->id == -1) {
- if (ACPI_FAILURE(acpi_processor_hotadd_init(pr)))
- return -ENODEV;
- }
- /*
- * On some boxes several processors use the same processor bus id.
- * But they are located in different scope. For example:
- * \_SB.SCK0.CPU0
- * \_SB.SCK1.CPU0
- * Rename the processor device bus id. And the new bus id will be
- * generated as the following format:
- * CPU+CPU ID.
- */
- sprintf(acpi_device_bid(device), "CPU%X", pr->id);
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
- pr->acpi_id));
-
- if (!object.processor.pblk_address)
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
- else if (object.processor.pblk_length != 6)
- dev_err(&device->dev, "Invalid PBLK length [%d]\n",
- object.processor.pblk_length);
- else {
- pr->throttling.address = object.processor.pblk_address;
- pr->throttling.duty_offset = acpi_gbl_FADT.duty_offset;
- pr->throttling.duty_width = acpi_gbl_FADT.duty_width;
-
- pr->pblk = object.processor.pblk_address;
-
- /*
- * We don't care about error returns - we just try to mark
- * these reserved so that nobody else is confused into thinking
- * that this region might be unused..
- *
- * (In particular, allocating the IO range for Cardbus)
- */
- request_region(pr->throttling.address, 6, "ACPI CPU throttle");
- }
-
- /*
- * If ACPI describes a slot number for this CPU, we can use it
- * ensure we get the right value in the "physical id" field
- * of /proc/cpuinfo
- */
- status = acpi_evaluate_object(pr->handle, "_SUN", NULL, &buffer);
- if (ACPI_SUCCESS(status))
- arch_fix_phys_package_id(pr->id, object.integer.value);
-
- return 0;
-}
-
-static DEFINE_PER_CPU(void *, processor_device_array);
-
-static void acpi_processor_notify(struct acpi_device *device, u32 event)
-{
- struct acpi_processor *pr = acpi_driver_data(device);
int saved;
+ if (device->handle != handle)
+ return;
+
+ pr = acpi_driver_data(device);
if (!pr)
return;
return;
}
-static int acpi_cpu_soft_notify(struct notifier_block *nfb,
- unsigned long action, void *hcpu)
+static __cpuinit int __acpi_processor_start(struct acpi_device *device);
+
+static int __cpuinit acpi_cpu_soft_notify(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
struct acpi_processor *pr = per_cpu(processors, cpu);
+ struct acpi_device *device;
+
+ if (!pr || acpi_bus_get_device(pr->handle, &device))
+ return NOTIFY_DONE;
- if (action == CPU_ONLINE && pr) {
- /* CPU got physically hotplugged and onlined the first time:
- * Initialize missing things
+ if (action == CPU_ONLINE) {
+ /*
+ * CPU got physically hotplugged and onlined for the first time:
+ * Initialize missing things.
*/
if (pr->flags.need_hotplug_init) {
+ int ret;
+
pr_info("Will online and init hotplugged CPU: %d\n",
pr->id);
- WARN(acpi_processor_start(pr), "Failed to start CPU:"
- " %d\n", pr->id);
pr->flags.need_hotplug_init = 0;
- /* Normal CPU soft online event */
+ ret = __acpi_processor_start(device);
+ WARN(ret, "Failed to start CPU: %d\n", pr->id);
} else {
+ /* Normal CPU soft online event. */
acpi_processor_ppc_has_changed(pr, 0);
acpi_processor_hotplug(pr);
acpi_processor_reevaluate_tstate(pr, action);
acpi_processor_tstate_has_changed(pr);
}
- }
- if (action == CPU_DEAD && pr) {
- /* invalidate the flag.throttling after one CPU is offline */
+ } else if (action == CPU_DEAD) {
+ /* Invalidate flag.throttling after the CPU is offline. */
acpi_processor_reevaluate_tstate(pr, action);
}
return NOTIFY_OK;
}
-static struct notifier_block acpi_cpu_notifier =
+static struct notifier_block __refdata acpi_cpu_notifier =
{
.notifier_call = acpi_cpu_soft_notify,
};
-/*
- * acpi_processor_start() is called by the cpu_hotplug_notifier func:
- * acpi_cpu_soft_notify(). Getting it __cpuinit{data} is difficult, the
- * root cause seem to be that acpi_processor_uninstall_hotplug_notify()
- * is in the module_exit (__exit) func. Allowing acpi_processor_start()
- * to not be in __cpuinit section, but being called from __cpuinit funcs
- * via __ref looks like the right thing to do here.
- */
-static __ref int acpi_processor_start(struct acpi_processor *pr)
+static __cpuinit int __acpi_processor_start(struct acpi_device *device)
{
- struct acpi_device *device = per_cpu(processor_device_array, pr->id);
+ struct acpi_processor *pr = acpi_driver_data(device);
+ acpi_status status;
int result = 0;
+ if (!pr)
+ return -ENODEV;
+
+ if (pr->flags.need_hotplug_init)
+ return 0;
+
#ifdef CONFIG_CPU_FREQ
acpi_processor_ppc_has_changed(pr, 0);
acpi_processor_load_module(pr);
goto err_remove_sysfs_thermal;
}
- return 0;
+ status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+ acpi_processor_notify, device);
+ if (ACPI_SUCCESS(status))
+ return 0;
-err_remove_sysfs_thermal:
+ sysfs_remove_link(&pr->cdev->device.kobj, "device");
+ err_remove_sysfs_thermal:
sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
-err_thermal_unregister:
+ err_thermal_unregister:
thermal_cooling_device_unregister(pr->cdev);
-err_power_exit:
+ err_power_exit:
acpi_processor_power_exit(pr);
-
return result;
}
-/*
- * Do not put anything in here which needs the core to be online.
- * For example MSR access or setting up things which check for cpuinfo_x86
- * (cpu_data(cpu)) values, like CPU feature flags, family, model, etc.
- * Such things have to be put in and set up above in acpi_processor_start()
- */
-static int __cpuinit acpi_processor_add(struct acpi_device *device)
+static int __cpuinit acpi_processor_start(struct device *dev)
{
- struct acpi_processor *pr = NULL;
- int result = 0;
- struct device *dev;
-
- pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL);
- if (!pr)
- return -ENOMEM;
-
- if (!zalloc_cpumask_var(&pr->throttling.shared_cpu_map, GFP_KERNEL)) {
- result = -ENOMEM;
- goto err_free_pr;
- }
-
- pr->handle = device->handle;
- strcpy(acpi_device_name(device), ACPI_PROCESSOR_DEVICE_NAME);
- strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS);
- device->driver_data = pr;
-
- result = acpi_processor_get_info(device);
- if (result) {
- /* Processor is physically not present */
- return 0;
- }
+ struct acpi_device *device;
-#ifdef CONFIG_SMP
- if (pr->id >= setup_max_cpus && pr->id != 0)
- return 0;
-#endif
-
- BUG_ON(pr->id >= nr_cpu_ids);
-
- /*
- * Buggy BIOS check
- * ACPI id of processors can be reported wrongly by the BIOS.
- * Don't trust it blindly
- */
- if (per_cpu(processor_device_array, pr->id) != NULL &&
- per_cpu(processor_device_array, pr->id) != device) {
- dev_warn(&device->dev,
- "BIOS reported wrong ACPI id %d for the processor\n",
- pr->id);
- result = -ENODEV;
- goto err_free_cpumask;
- }
- per_cpu(processor_device_array, pr->id) = device;
+ if (acpi_bus_get_device(ACPI_HANDLE(dev), &device))
+ return -ENODEV;
- per_cpu(processors, pr->id) = pr;
-
- dev = get_cpu_device(pr->id);
- if (sysfs_create_link(&device->dev.kobj, &dev->kobj, "sysdev")) {
- result = -EFAULT;
- goto err_clear_processor;
- }
-
- /*
- * Do not start hotplugged CPUs now, but when they
- * are onlined the first time
- */
- if (pr->flags.need_hotplug_init)
- return 0;
-
- result = acpi_processor_start(pr);
- if (result)
- goto err_remove_sysfs;
-
- return 0;
-
-err_remove_sysfs:
- sysfs_remove_link(&device->dev.kobj, "sysdev");
-err_clear_processor:
- /*
- * processor_device_array is not cleared to allow checks for buggy BIOS
- */
- per_cpu(processors, pr->id) = NULL;
-err_free_cpumask:
- free_cpumask_var(pr->throttling.shared_cpu_map);
-err_free_pr:
- kfree(pr);
- return result;
+ return __acpi_processor_start(device);
}
-static int acpi_processor_remove(struct acpi_device *device)
+static int acpi_processor_stop(struct device *dev)
{
- struct acpi_processor *pr = NULL;
+ struct acpi_device *device;
+ struct acpi_processor *pr;
+ if (acpi_bus_get_device(ACPI_HANDLE(dev), &device))
+ return 0;
- if (!device || !acpi_driver_data(device))
- return -EINVAL;
+ acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+ acpi_processor_notify);
pr = acpi_driver_data(device);
-
- if (pr->id >= nr_cpu_ids)
- goto free;
-
- if (device->removal_type == ACPI_BUS_REMOVAL_EJECT) {
- if (acpi_processor_handle_eject(pr))
- return -EINVAL;
- }
+ if (!pr)
+ return 0;
acpi_processor_power_exit(pr);
- sysfs_remove_link(&device->dev.kobj, "sysdev");
-
if (pr->cdev) {
sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
sysfs_remove_link(&pr->cdev->device.kobj, "device");
thermal_cooling_device_unregister(pr->cdev);
pr->cdev = NULL;
}
-
- per_cpu(processors, pr->id) = NULL;
- per_cpu(processor_device_array, pr->id) = NULL;
- try_offline_node(cpu_to_node(pr->id));
-
-free:
- free_cpumask_var(pr->throttling.shared_cpu_map);
- kfree(pr);
-
return 0;
}
-#ifdef CONFIG_ACPI_HOTPLUG_CPU
-/****************************************************************************
- * Acpi processor hotplug support *
- ****************************************************************************/
-
-static int is_processor_present(acpi_handle handle)
-{
- acpi_status status;
- unsigned long long sta = 0;
-
-
- status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-
- if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_PRESENT))
- return 1;
-
- /*
- * _STA is mandatory for a processor that supports hot plug
- */
- if (status == AE_NOT_FOUND)
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Processor does not support hot plug\n"));
- else
- ACPI_EXCEPTION((AE_INFO, status,
- "Processor Device is not present"));
- return 0;
-}
-
-static void acpi_processor_hotplug_notify(acpi_handle handle,
- u32 event, void *data)
-{
- struct acpi_device *device = NULL;
- struct acpi_eject_event *ej_event = NULL;
- u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
- acpi_status status;
- int result;
-
- acpi_scan_lock_acquire();
-
- switch (event) {
- case ACPI_NOTIFY_BUS_CHECK:
- case ACPI_NOTIFY_DEVICE_CHECK:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Processor driver received %s event\n",
- (event == ACPI_NOTIFY_BUS_CHECK) ?
- "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK"));
-
- if (!is_processor_present(handle))
- break;
-
- if (!acpi_bus_get_device(handle, &device))
- break;
-
- result = acpi_bus_scan(handle);
- if (result) {
- acpi_handle_err(handle, "Unable to add the device\n");
- break;
- }
- result = acpi_bus_get_device(handle, &device);
- if (result) {
- acpi_handle_err(handle, "Missing device object\n");
- break;
- }
- ost_code = ACPI_OST_SC_SUCCESS;
- break;
-
- case ACPI_NOTIFY_EJECT_REQUEST:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "received ACPI_NOTIFY_EJECT_REQUEST\n"));
-
- if (acpi_bus_get_device(handle, &device)) {
- acpi_handle_err(handle,
- "Device don't exist, dropping EJECT\n");
- break;
- }
- if (!acpi_driver_data(device)) {
- acpi_handle_err(handle,
- "Driver data is NULL, dropping EJECT\n");
- break;
- }
-
- ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
- if (!ej_event) {
- acpi_handle_err(handle, "No memory, dropping EJECT\n");
- break;
- }
-
- get_device(&device->dev);
- ej_event->device = device;
- ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
- /* The eject is carried out asynchronously. */
- status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device,
- ej_event);
- if (ACPI_FAILURE(status)) {
- put_device(&device->dev);
- kfree(ej_event);
- break;
- }
- goto out;
-
- default:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Unsupported event [0x%x]\n", event));
-
- /* non-hotplug event; possibly handled by other handler */
- goto out;
- }
-
- /* Inform firmware that the hotplug operation has completed */
- (void) acpi_evaluate_hotplug_ost(handle, event, ost_code, NULL);
-
- out:
- acpi_scan_lock_release();
-}
-
-static acpi_status is_processor_device(acpi_handle handle)
-{
- struct acpi_device_info *info;
- char *hid;
- acpi_status status;
-
- status = acpi_get_object_info(handle, &info);
- if (ACPI_FAILURE(status))
- return status;
-
- if (info->type == ACPI_TYPE_PROCESSOR) {
- kfree(info);
- return AE_OK; /* found a processor object */
- }
-
- if (!(info->valid & ACPI_VALID_HID)) {
- kfree(info);
- return AE_ERROR;
- }
-
- hid = info->hardware_id.string;
- if ((hid == NULL) || strcmp(hid, ACPI_PROCESSOR_DEVICE_HID)) {
- kfree(info);
- return AE_ERROR;
- }
-
- kfree(info);
- return AE_OK; /* found a processor device object */
-}
-
-static acpi_status
-processor_walk_namespace_cb(acpi_handle handle,
- u32 lvl, void *context, void **rv)
-{
- acpi_status status;
- int *action = context;
-
- status = is_processor_device(handle);
- if (ACPI_FAILURE(status))
- return AE_OK; /* not a processor; continue to walk */
-
- switch (*action) {
- case INSTALL_NOTIFY_HANDLER:
- acpi_install_notify_handler(handle,
- ACPI_SYSTEM_NOTIFY,
- acpi_processor_hotplug_notify,
- NULL);
- break;
- case UNINSTALL_NOTIFY_HANDLER:
- acpi_remove_notify_handler(handle,
- ACPI_SYSTEM_NOTIFY,
- acpi_processor_hotplug_notify);
- break;
- default:
- break;
- }
-
- /* found a processor; skip walking underneath */
- return AE_CTRL_DEPTH;
-}
-
-static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
-{
- acpi_handle handle = pr->handle;
-
- if (!is_processor_present(handle)) {
- return AE_ERROR;
- }
-
- if (acpi_map_lsapic(handle, &pr->id))
- return AE_ERROR;
-
- if (arch_register_cpu(pr->id)) {
- acpi_unmap_lsapic(pr->id);
- return AE_ERROR;
- }
-
- /* CPU got hot-plugged, but cpu_data is not initialized yet
- * Set flag to delay cpu_idle/throttling initialization
- * in:
- * acpi_processor_add()
- * acpi_processor_get_info()
- * and do it when the CPU gets online the first time
- * TBD: Cleanup above functions and try to do this more elegant.
- */
- pr_info("CPU %d got hotplugged\n", pr->id);
- pr->flags.need_hotplug_init = 1;
-
- return AE_OK;
-}
-
-static int acpi_processor_handle_eject(struct acpi_processor *pr)
-{
- if (cpu_online(pr->id))
- cpu_down(pr->id);
-
- get_online_cpus();
- /*
- * The cpu might become online again at this point. So we check whether
- * the cpu has been onlined or not. If the cpu became online, it means
- * that someone wants to use the cpu. So acpi_processor_handle_eject()
- * returns -EAGAIN.
- */
- if (unlikely(cpu_online(pr->id))) {
- put_online_cpus();
- pr_warn("Failed to remove CPU %d, because other task "
- "brought the CPU back online\n", pr->id);
- return -EAGAIN;
- }
- arch_unregister_cpu(pr->id);
- acpi_unmap_lsapic(pr->id);
- put_online_cpus();
- return (0);
-}
-#else
-static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
-{
- return AE_ERROR;
-}
-static int acpi_processor_handle_eject(struct acpi_processor *pr)
-{
- return (-EINVAL);
-}
-#endif
-
-static
-void acpi_processor_install_hotplug_notify(void)
-{
-#ifdef CONFIG_ACPI_HOTPLUG_CPU
- int action = INSTALL_NOTIFY_HANDLER;
- acpi_walk_namespace(ACPI_TYPE_ANY,
- ACPI_ROOT_OBJECT,
- ACPI_UINT32_MAX,
- processor_walk_namespace_cb, NULL, &action, NULL);
-#endif
- register_hotcpu_notifier(&acpi_cpu_notifier);
-}
-
-static
-void acpi_processor_uninstall_hotplug_notify(void)
-{
-#ifdef CONFIG_ACPI_HOTPLUG_CPU
- int action = UNINSTALL_NOTIFY_HANDLER;
- acpi_walk_namespace(ACPI_TYPE_ANY,
- ACPI_ROOT_OBJECT,
- ACPI_UINT32_MAX,
- processor_walk_namespace_cb, NULL, &action, NULL);
-#endif
- unregister_hotcpu_notifier(&acpi_cpu_notifier);
-}
-
/*
* We keep the driver loaded even when ACPI is not running.
* This is needed for the powernow-k8 driver, that works even without
* ACPI, but needs symbols from this driver
*/
-static int __init acpi_processor_init(void)
+static int __init acpi_processor_driver_init(void)
{
int result = 0;
if (acpi_disabled)
return 0;
- result = acpi_bus_register_driver(&acpi_processor_driver);
+ result = driver_register(&acpi_processor_driver);
if (result < 0)
return result;
acpi_processor_syscore_init();
-
- acpi_processor_install_hotplug_notify();
-
+ register_hotcpu_notifier(&acpi_cpu_notifier);
acpi_thermal_cpufreq_init();
-
acpi_processor_ppc_init();
-
acpi_processor_throttling_init();
-
return 0;
}
-static void __exit acpi_processor_exit(void)
+static void __exit acpi_processor_driver_exit(void)
{
if (acpi_disabled)
return;
acpi_processor_ppc_exit();
-
acpi_thermal_cpufreq_exit();
-
- acpi_processor_uninstall_hotplug_notify();
-
+ unregister_hotcpu_notifier(&acpi_cpu_notifier);
acpi_processor_syscore_exit();
-
- acpi_bus_unregister_driver(&acpi_processor_driver);
-
- return;
+ driver_unregister(&acpi_processor_driver);
}
-module_init(acpi_processor_init);
-module_exit(acpi_processor_exit);
+module_init(acpi_processor_driver_init);
+module_exit(acpi_processor_driver_exit);
MODULE_ALIAS("processor");
#ifdef CONFIG_PM_SLEEP
static u32 saved_bm_rld;
-int acpi_processor_suspend(void)
+static int acpi_processor_suspend(void)
{
acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &saved_bm_rld);
return 0;
}
-void acpi_processor_resume(void)
+static void acpi_processor_resume(void)
{
u32 resumed_bm_rld;
int acpi_processor_preregister_performance(
struct acpi_processor_performance __percpu *performance)
{
- int count, count_target;
+ int count_target;
int retval = 0;
unsigned int i, j;
cpumask_var_t covered_cpus;
/* Validate the Domain info */
count_target = pdomain->num_processors;
- count = 1;
if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ALL)
pr->performance->shared_type = CPUFREQ_SHARED_TYPE_ALL;
else if (pdomain->coord_type == DOMAIN_COORD_TYPE_HW_ALL)
cpumask_set_cpu(j, covered_cpus);
cpumask_set_cpu(j, pr->performance->shared_cpu_map);
- count++;
}
for_each_possible_cpu(j) {
#define ACPI_IS_ROOT_DEVICE(device) (!(device)->parent)
+/*
+ * If set, devices will be hot-removed even if they cannot be put offline
+ * gracefully (from the kernel's standpoint).
+ */
+bool acpi_force_hot_remove;
+
static const char *dummy_hid = "device";
static LIST_HEAD(acpi_device_list);
}
static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
+static acpi_status acpi_bus_offline_companions(acpi_handle handle, u32 lvl,
+ void *data, void **ret_p)
+{
+ struct acpi_device *device = NULL;
+ struct acpi_device_physical_node *pn;
+ bool second_pass = (bool)data;
+ acpi_status status = AE_OK;
+
+ if (acpi_bus_get_device(handle, &device))
+ return AE_OK;
+
+ mutex_lock(&device->physical_node_lock);
+
+ list_for_each_entry(pn, &device->physical_node_list, node) {
+ int ret;
+
+ if (second_pass) {
+ /* Skip devices offlined by the first pass. */
+ if (pn->put_online)
+ continue;
+ } else {
+ pn->put_online = false;
+ }
+ ret = device_offline(pn->dev);
+ if (acpi_force_hot_remove)
+ continue;
+
+ if (ret >= 0) {
+ pn->put_online = !ret;
+ } else {
+ *ret_p = pn->dev;
+ if (second_pass) {
+ status = AE_ERROR;
+ break;
+ }
+ }
+ }
+
+ mutex_unlock(&device->physical_node_lock);
+
+ return status;
+}
+
+static acpi_status acpi_bus_online_companions(acpi_handle handle, u32 lvl,
+ void *data, void **ret_p)
+{
+ struct acpi_device *device = NULL;
+ struct acpi_device_physical_node *pn;
+
+ if (acpi_bus_get_device(handle, &device))
+ return AE_OK;
+
+ mutex_lock(&device->physical_node_lock);
+
+ list_for_each_entry(pn, &device->physical_node_list, node)
+ if (pn->put_online) {
+ device_online(pn->dev);
+ pn->put_online = false;
+ }
+
+ mutex_unlock(&device->physical_node_lock);
+
+ return AE_OK;
+}
+
static int acpi_scan_hot_remove(struct acpi_device *device)
{
acpi_handle handle = device->handle;
acpi_handle not_used;
struct acpi_object_list arg_list;
union acpi_object arg;
+ struct device *errdev;
acpi_status status;
unsigned long long sta;
return -EINVAL;
}
+ lock_device_hotplug();
+
+ /*
+ * Carry out two passes here and ignore errors in the first pass,
+ * because if the devices in question are memory blocks and
+ * CONFIG_MEMCG is set, one of the blocks may hold data structures
+ * that the other blocks depend on, but it is not known in advance which
+ * block holds them.
+ *
+ * If the first pass is successful, the second one isn't needed, though.
+ */
+ errdev = NULL;
+ acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
+ NULL, acpi_bus_offline_companions,
+ (void *)false, (void **)&errdev);
+ acpi_bus_offline_companions(handle, 0, (void *)false, (void **)&errdev);
+ if (errdev) {
+ errdev = NULL;
+ acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
+ NULL, acpi_bus_offline_companions,
+ (void *)true , (void **)&errdev);
+ if (!errdev || acpi_force_hot_remove)
+ acpi_bus_offline_companions(handle, 0, (void *)true,
+ (void **)&errdev);
+
+ if (errdev && !acpi_force_hot_remove) {
+ dev_warn(errdev, "Offline failed.\n");
+ acpi_bus_online_companions(handle, 0, NULL, NULL);
+ acpi_walk_namespace(ACPI_TYPE_ANY, handle,
+ ACPI_UINT32_MAX,
+ acpi_bus_online_companions, NULL,
+ NULL, NULL);
+
+ unlock_device_hotplug();
+
+ put_device(&device->dev);
+ return -EBUSY;
+ }
+ }
+
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Hot-removing device %s...\n", dev_name(&device->dev)));
acpi_bus_trim(device);
+
+ unlock_device_hotplug();
+
/* Device node has been unregistered. */
put_device(&device->dev);
device = NULL;
int error;
mutex_lock(&acpi_scan_lock);
+ lock_device_hotplug();
acpi_bus_get_device(handle, &device);
if (device) {
kobject_uevent(&device->dev.kobj, KOBJ_ONLINE);
out:
+ unlock_device_hotplug();
acpi_evaluate_hotplug_ost(handle, ost_source, ost_code, NULL);
mutex_unlock(&acpi_scan_lock);
}
acpi_device_notify);
}
-static int acpi_bus_driver_init(struct acpi_device *, struct acpi_driver *);
-static int acpi_device_probe(struct device * dev)
+static int acpi_device_probe(struct device *dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver);
int ret;
- ret = acpi_bus_driver_init(acpi_dev, acpi_drv);
- if (!ret) {
- if (acpi_drv->ops.notify) {
- ret = acpi_device_install_notify_handler(acpi_dev);
- if (ret) {
- if (acpi_drv->ops.remove)
- acpi_drv->ops.remove(acpi_dev);
- acpi_dev->driver = NULL;
- acpi_dev->driver_data = NULL;
- return ret;
- }
- }
+ if (acpi_dev->handler)
+ return -EINVAL;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Found driver [%s] for device [%s]\n",
- acpi_drv->name, acpi_dev->pnp.bus_id));
- get_device(dev);
+ if (!acpi_drv->ops.add)
+ return -ENOSYS;
+
+ ret = acpi_drv->ops.add(acpi_dev);
+ if (ret)
+ return ret;
+
+ acpi_dev->driver = acpi_drv;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Driver [%s] successfully bound to device [%s]\n",
+ acpi_drv->name, acpi_dev->pnp.bus_id));
+
+ if (acpi_drv->ops.notify) {
+ ret = acpi_device_install_notify_handler(acpi_dev);
+ if (ret) {
+ if (acpi_drv->ops.remove)
+ acpi_drv->ops.remove(acpi_dev);
+
+ acpi_dev->driver = NULL;
+ acpi_dev->driver_data = NULL;
+ return ret;
+ }
}
- return ret;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found driver [%s] for device [%s]\n",
+ acpi_drv->name, acpi_dev->pnp.bus_id));
+ get_device(dev);
+ return 0;
}
static int acpi_device_remove(struct device * dev)
printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n",
dev_name(&device->dev));
- device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
return 0;
err:
/* --------------------------------------------------------------------------
Driver Management
-------------------------------------------------------------------------- */
-/**
- * acpi_bus_driver_init - add a device to a driver
- * @device: the device to add and initialize
- * @driver: driver for the device
- *
- * Used to initialize a device via its device driver. Called whenever a
- * driver is bound to a device. Invokes the driver's add() ops.
- */
-static int
-acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
-{
- int result = 0;
-
- if (!device || !driver)
- return -EINVAL;
-
- if (!driver->ops.add)
- return -ENOSYS;
-
- result = driver->ops.add(device);
- if (result)
- return result;
-
- device->driver = driver;
-
- /*
- * TBD - Configuration Management: Assign resources to device based
- * upon possible configuration and currently allocated resources.
- */
-
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Driver successfully bound to device\n"));
- return 0;
-}
-
/**
* acpi_bus_register_driver - register a driver with the ACPI bus
* @driver: driver being registered
if (!acpi_bus_get_device(handle, &device)) {
struct acpi_scan_handler *dev_handler = device->handler;
- device->removal_type = ACPI_BUS_REMOVAL_EJECT;
if (dev_handler) {
if (dev_handler->detach)
dev_handler->detach(device);
acpi_pci_root_init();
acpi_pci_link_init();
+ acpi_processor_init();
acpi_platform_init();
acpi_lpss_init();
+ acpi_cmos_rtc_init();
acpi_container_init();
acpi_memory_hotplug_init();
+ acpi_dock_init();
mutex_lock(&acpi_scan_lock);
/*
break;
case ACPI_STATE_S3:
+ if (!acpi_suspend_lowlevel)
+ return -ENOSYS;
error = acpi_suspend_lowlevel();
if (error)
return error;
pr_err(PREFIX "Unable to add hotplug profile '%s'\n", name);
}
+static ssize_t force_remove_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", !!acpi_force_hot_remove);
+}
+
+static ssize_t force_remove_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t size)
+{
+ bool val;
+ int ret;
+
+ ret = strtobool(buf, &val);
+ if (ret < 0)
+ return ret;
+
+ lock_device_hotplug();
+ acpi_force_hot_remove = val;
+ unlock_device_hotplug();
+ return size;
+}
+
+static const struct kobj_attribute force_remove_attr =
+ __ATTR(force_remove, S_IRUGO | S_IWUSR, force_remove_show,
+ force_remove_store);
+
int __init acpi_sysfs_init(void)
{
int result;
return result;
hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
+ result = sysfs_create_file(hotplug_kobj, &force_remove_attr.attr);
+ if (result)
+ return result;
+
result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);
return result;
}
int error;
acpi_status status;
- if (device->handler)
- return -EINVAL;
-
status = acpi_walk_namespace(ACPI_TYPE_DEVICE,
device->parent->handle, 1,
acpi_video_bus_match, NULL,
SET_RUNTIME_PM_OPS(
amba_pm_runtime_suspend,
amba_pm_runtime_resume,
- pm_generic_runtime_idle
+ NULL
)
};
spin_unlock_irqrestore(ap->lock, flags);
- if (wait)
+ if (wait) {
ata_port_wait_eh(ap);
+ flush_work(&ap->hotplug_task.work);
+ }
}
static void ata_acpi_dev_notify_dock(acpi_handle handle, u32 event, void *data)
.uevent = ata_acpi_ap_uevent,
};
+void ata_acpi_hotplug_init(struct ata_host *host)
+{
+ int i;
+
+ for (i = 0; i < host->n_ports; i++) {
+ struct ata_port *ap = host->ports[i];
+ acpi_handle handle;
+ struct ata_device *dev;
+
+ if (!ap)
+ continue;
+
+ handle = ata_ap_acpi_handle(ap);
+ if (handle) {
+ /* we might be on a docking station */
+ register_hotplug_dock_device(handle,
+ &ata_acpi_ap_dock_ops, ap,
+ NULL, NULL);
+ }
+
+ ata_for_each_dev(dev, &ap->link, ALL) {
+ handle = ata_dev_acpi_handle(dev);
+ if (!handle)
+ continue;
+
+ /* we might be on a docking station */
+ register_hotplug_dock_device(handle,
+ &ata_acpi_dev_dock_ops,
+ dev, NULL, NULL);
+ }
+ }
+}
+
/**
* ata_acpi_dissociate - dissociate ATA host from ACPI objects
* @host: target ATA host
return -EBUSY;
}
- return pm_runtime_suspend(dev);
+ return 0;
}
static int ata_port_runtime_suspend(struct device *dev)
if (rc)
goto err_tadd;
+ ata_acpi_hotplug_init(host);
+
/* set cable, sata_spd_limit and report */
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap = host->ports[i];
extern void ata_acpi_unregister(void);
extern void ata_acpi_bind(struct ata_device *dev);
extern void ata_acpi_unbind(struct ata_device *dev);
+extern void ata_acpi_hotplug_init(struct ata_host *host);
#else
static inline void ata_acpi_dissociate(struct ata_host *host) { }
static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
static inline void ata_acpi_unregister(void) { }
static inline void ata_acpi_bind(struct ata_device *dev) { }
static inline void ata_acpi_unbind(struct ata_device *dev) { }
+static inline void ata_acpi_hotplug_init(struct ata_host *host) {}
#endif
/* libata-scsi.c */
static struct device_attribute uevent_attr =
__ATTR(uevent, S_IRUGO | S_IWUSR, show_uevent, store_uevent);
+static ssize_t show_online(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ bool val;
+
+ lock_device_hotplug();
+ val = !dev->offline;
+ unlock_device_hotplug();
+ return sprintf(buf, "%u\n", val);
+}
+
+static ssize_t store_online(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ bool val;
+ int ret;
+
+ ret = strtobool(buf, &val);
+ if (ret < 0)
+ return ret;
+
+ lock_device_hotplug();
+ ret = val ? device_online(dev) : device_offline(dev);
+ unlock_device_hotplug();
+ return ret < 0 ? ret : count;
+}
+
+static struct device_attribute online_attr =
+ __ATTR(online, S_IRUGO | S_IWUSR, show_online, store_online);
+
static int device_add_attributes(struct device *dev,
struct device_attribute *attrs)
{
if (error)
goto err_remove_type_groups;
+ if (device_supports_offline(dev) && !dev->offline_disabled) {
+ error = device_create_file(dev, &online_attr);
+ if (error)
+ goto err_remove_type_groups;
+ }
+
return 0;
err_remove_type_groups:
struct class *class = dev->class;
const struct device_type *type = dev->type;
+ device_remove_file(dev, &online_attr);
device_remove_groups(dev, dev->groups);
if (type)
EXPORT_SYMBOL_GPL(device_create_file);
EXPORT_SYMBOL_GPL(device_remove_file);
+static DEFINE_MUTEX(device_hotplug_lock);
+
+void lock_device_hotplug(void)
+{
+ mutex_lock(&device_hotplug_lock);
+}
+
+void unlock_device_hotplug(void)
+{
+ mutex_unlock(&device_hotplug_lock);
+}
+
+static int device_check_offline(struct device *dev, void *not_used)
+{
+ int ret;
+
+ ret = device_for_each_child(dev, NULL, device_check_offline);
+ if (ret)
+ return ret;
+
+ return device_supports_offline(dev) && !dev->offline ? -EBUSY : 0;
+}
+
+/**
+ * device_offline - Prepare the device for hot-removal.
+ * @dev: Device to be put offline.
+ *
+ * Execute the device bus type's .offline() callback, if present, to prepare
+ * the device for a subsequent hot-removal. If that succeeds, the device must
+ * not be used until either it is removed or its bus type's .online() callback
+ * is executed.
+ *
+ * Call under device_hotplug_lock.
+ */
+int device_offline(struct device *dev)
+{
+ int ret;
+
+ if (dev->offline_disabled)
+ return -EPERM;
+
+ ret = device_for_each_child(dev, NULL, device_check_offline);
+ if (ret)
+ return ret;
+
+ device_lock(dev);
+ if (device_supports_offline(dev)) {
+ if (dev->offline) {
+ ret = 1;
+ } else {
+ ret = dev->bus->offline(dev);
+ if (!ret) {
+ kobject_uevent(&dev->kobj, KOBJ_OFFLINE);
+ dev->offline = true;
+ }
+ }
+ }
+ device_unlock(dev);
+
+ return ret;
+}
+
+/**
+ * device_online - Put the device back online after successful device_offline().
+ * @dev: Device to be put back online.
+ *
+ * If device_offline() has been successfully executed for @dev, but the device
+ * has not been removed subsequently, execute its bus type's .online() callback
+ * to indicate that the device can be used again.
+ *
+ * Call under device_hotplug_lock.
+ */
+int device_online(struct device *dev)
+{
+ int ret = 0;
+
+ device_lock(dev);
+ if (device_supports_offline(dev)) {
+ if (dev->offline) {
+ ret = dev->bus->online(dev);
+ if (!ret) {
+ kobject_uevent(&dev->kobj, KOBJ_ONLINE);
+ dev->offline = false;
+ }
+ } else {
+ ret = 1;
+ }
+ }
+ device_unlock(dev);
+
+ return ret;
+}
+
struct root_device {
struct device dev;
struct module *owner;
#include <linux/gfp.h>
#include <linux/slab.h>
#include <linux/percpu.h>
+#include <linux/acpi.h>
#include "base.h"
-struct bus_type cpu_subsys = {
- .name = "cpu",
- .dev_name = "cpu",
-};
-EXPORT_SYMBOL_GPL(cpu_subsys);
-
static DEFINE_PER_CPU(struct device *, cpu_sys_devices);
+static int cpu_subsys_match(struct device *dev, struct device_driver *drv)
+{
+ /* ACPI style match is the only one that may succeed. */
+ if (acpi_driver_match_device(dev, drv))
+ return 1;
+
+ return 0;
+}
+
#ifdef CONFIG_HOTPLUG_CPU
static void change_cpu_under_node(struct cpu *cpu,
unsigned int from_nid, unsigned int to_nid)
cpu->node_id = to_nid;
}
-static ssize_t show_online(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+static int __ref cpu_subsys_online(struct device *dev)
{
struct cpu *cpu = container_of(dev, struct cpu, dev);
+ int cpuid = dev->id;
+ int from_nid, to_nid;
+ int ret;
- return sprintf(buf, "%u\n", !!cpu_online(cpu->dev.id));
+ cpu_hotplug_driver_lock();
+
+ from_nid = cpu_to_node(cpuid);
+ ret = cpu_up(cpuid);
+ /*
+ * When hot adding memory to memoryless node and enabling a cpu
+ * on the node, node number of the cpu may internally change.
+ */
+ to_nid = cpu_to_node(cpuid);
+ if (from_nid != to_nid)
+ change_cpu_under_node(cpu, from_nid, to_nid);
+
+ cpu_hotplug_driver_unlock();
+ return ret;
}
-static ssize_t __ref store_online(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static int cpu_subsys_offline(struct device *dev)
{
- struct cpu *cpu = container_of(dev, struct cpu, dev);
- int cpuid = cpu->dev.id;
- int from_nid, to_nid;
- ssize_t ret;
+ int ret;
cpu_hotplug_driver_lock();
- switch (buf[0]) {
- case '0':
- ret = cpu_down(cpuid);
- if (!ret)
- kobject_uevent(&dev->kobj, KOBJ_OFFLINE);
- break;
- case '1':
- from_nid = cpu_to_node(cpuid);
- ret = cpu_up(cpuid);
-
- /*
- * When hot adding memory to memoryless node and enabling a cpu
- * on the node, node number of the cpu may internally change.
- */
- to_nid = cpu_to_node(cpuid);
- if (from_nid != to_nid)
- change_cpu_under_node(cpu, from_nid, to_nid);
-
- if (!ret)
- kobject_uevent(&dev->kobj, KOBJ_ONLINE);
- break;
- default:
- ret = -EINVAL;
- }
+ ret = cpu_down(dev->id);
cpu_hotplug_driver_unlock();
-
- if (ret >= 0)
- ret = count;
return ret;
}
-static DEVICE_ATTR(online, 0644, show_online, store_online);
-static void __cpuinit register_cpu_control(struct cpu *cpu)
-{
- device_create_file(&cpu->dev, &dev_attr_online);
-}
void unregister_cpu(struct cpu *cpu)
{
int logical_cpu = cpu->dev.id;
unregister_cpu_under_node(logical_cpu, cpu_to_node(logical_cpu));
- device_remove_file(&cpu->dev, &dev_attr_online);
-
device_unregister(&cpu->dev);
per_cpu(cpu_sys_devices, logical_cpu) = NULL;
return;
static DEVICE_ATTR(release, S_IWUSR, NULL, cpu_release_store);
#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
-#else /* ... !CONFIG_HOTPLUG_CPU */
-static inline void register_cpu_control(struct cpu *cpu)
-{
-}
#endif /* CONFIG_HOTPLUG_CPU */
+struct bus_type cpu_subsys = {
+ .name = "cpu",
+ .dev_name = "cpu",
+ .match = cpu_subsys_match,
+#ifdef CONFIG_HOTPLUG_CPU
+ .online = cpu_subsys_online,
+ .offline = cpu_subsys_offline,
+#endif
+};
+EXPORT_SYMBOL_GPL(cpu_subsys);
+
#ifdef CONFIG_KEXEC
#include <linux/kexec.h>
cpu->dev.id = num;
cpu->dev.bus = &cpu_subsys;
cpu->dev.release = cpu_device_release;
+ cpu->dev.offline_disabled = !cpu->hotpluggable;
+ cpu->dev.offline = !cpu_online(num);
#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
cpu->dev.bus->uevent = arch_cpu_uevent;
#endif
error = device_register(&cpu->dev);
- if (!error && cpu->hotpluggable)
- register_cpu_control(cpu);
if (!error)
per_cpu(cpu_sys_devices, num) = &cpu->dev;
if (!error)
return section_nr / sections_per_block;
}
+static int memory_subsys_online(struct device *dev);
+static int memory_subsys_offline(struct device *dev);
+
static struct bus_type memory_subsys = {
.name = MEMORY_CLASS_NAME,
.dev_name = MEMORY_CLASS_NAME,
+ .online = memory_subsys_online,
+ .offline = memory_subsys_offline,
};
static BLOCKING_NOTIFIER_HEAD(memory_chain);
memory->dev.bus = &memory_subsys;
memory->dev.id = memory->start_section_nr / sections_per_block;
memory->dev.release = memory_block_release;
+ memory->dev.offline = memory->state == MEM_OFFLINE;
error = device_register(&memory->dev);
return error;
{
int ret = 0;
- if (mem->state != from_state_req) {
- ret = -EINVAL;
- goto out;
- }
+ if (mem->state != from_state_req)
+ return -EINVAL;
if (to_state == MEM_OFFLINE)
mem->state = MEM_GOING_OFFLINE;
ret = memory_block_action(mem->start_section_nr, to_state, online_type);
+ mem->state = ret ? from_state_req : to_state;
+ return ret;
+}
- if (ret) {
- mem->state = from_state_req;
- goto out;
- }
+static int memory_subsys_online(struct device *dev)
+{
+ struct memory_block *mem = container_of(dev, struct memory_block, dev);
+ int ret;
- mem->state = to_state;
- switch (mem->state) {
- case MEM_OFFLINE:
- kobject_uevent(&mem->dev.kobj, KOBJ_OFFLINE);
- break;
- case MEM_ONLINE:
- kobject_uevent(&mem->dev.kobj, KOBJ_ONLINE);
- break;
- default:
- break;
+ mutex_lock(&mem->state_mutex);
+
+ ret = mem->state == MEM_ONLINE ? 0 :
+ __memory_block_change_state(mem, MEM_ONLINE, MEM_OFFLINE,
+ ONLINE_KEEP);
+
+ mutex_unlock(&mem->state_mutex);
+ return ret;
+}
+
+static int memory_subsys_offline(struct device *dev)
+{
+ struct memory_block *mem = container_of(dev, struct memory_block, dev);
+ int ret;
+
+ mutex_lock(&mem->state_mutex);
+
+ ret = mem->state == MEM_OFFLINE ? 0 :
+ __memory_block_change_state(mem, MEM_OFFLINE, MEM_ONLINE, -1);
+
+ mutex_unlock(&mem->state_mutex);
+ return ret;
+}
+
+static int __memory_block_change_state_uevent(struct memory_block *mem,
+ unsigned long to_state, unsigned long from_state_req,
+ int online_type)
+{
+ int ret = __memory_block_change_state(mem, to_state, from_state_req,
+ online_type);
+ if (!ret) {
+ switch (mem->state) {
+ case MEM_OFFLINE:
+ kobject_uevent(&mem->dev.kobj, KOBJ_OFFLINE);
+ break;
+ case MEM_ONLINE:
+ kobject_uevent(&mem->dev.kobj, KOBJ_ONLINE);
+ break;
+ default:
+ break;
+ }
}
-out:
return ret;
}
int ret;
mutex_lock(&mem->state_mutex);
- ret = __memory_block_change_state(mem, to_state, from_state_req,
- online_type);
+ ret = __memory_block_change_state_uevent(mem, to_state, from_state_req,
+ online_type);
mutex_unlock(&mem->state_mutex);
return ret;
struct device_attribute *attr, const char *buf, size_t count)
{
struct memory_block *mem;
+ bool offline;
int ret = -EINVAL;
mem = container_of(dev, struct memory_block, dev);
- if (!strncmp(buf, "online_kernel", min_t(int, count, 13)))
+ lock_device_hotplug();
+
+ if (!strncmp(buf, "online_kernel", min_t(int, count, 13))) {
+ offline = false;
ret = memory_block_change_state(mem, MEM_ONLINE,
MEM_OFFLINE, ONLINE_KERNEL);
- else if (!strncmp(buf, "online_movable", min_t(int, count, 14)))
+ } else if (!strncmp(buf, "online_movable", min_t(int, count, 14))) {
+ offline = false;
ret = memory_block_change_state(mem, MEM_ONLINE,
MEM_OFFLINE, ONLINE_MOVABLE);
- else if (!strncmp(buf, "online", min_t(int, count, 6)))
+ } else if (!strncmp(buf, "online", min_t(int, count, 6))) {
+ offline = false;
ret = memory_block_change_state(mem, MEM_ONLINE,
MEM_OFFLINE, ONLINE_KEEP);
- else if(!strncmp(buf, "offline", min_t(int, count, 7)))
+ } else if(!strncmp(buf, "offline", min_t(int, count, 7))) {
+ offline = true;
ret = memory_block_change_state(mem, MEM_OFFLINE,
MEM_ONLINE, -1);
+ }
+ if (!ret)
+ dev->offline = offline;
+
+ unlock_device_hotplug();
if (ret)
return ret;
}
#endif /* CONFIG_MEMORY_HOTREMOVE */
-/*
- * offline one memory block. If the memory block has been offlined, do nothing.
- */
-int offline_memory_block(struct memory_block *mem)
-{
- int ret = 0;
-
- mutex_lock(&mem->state_mutex);
- if (mem->state != MEM_OFFLINE)
- ret = __memory_block_change_state(mem, MEM_OFFLINE, MEM_ONLINE, -1);
- mutex_unlock(&mem->state_mutex);
-
- return ret;
-}
-
/* return true if the memory block is offlined, otherwise, return false */
bool is_memblock_offlined(struct memory_block *mem)
{
static const struct dev_pm_ops platform_dev_pm_ops = {
.runtime_suspend = pm_generic_runtime_suspend,
.runtime_resume = pm_generic_runtime_resume,
- .runtime_idle = pm_generic_runtime_idle,
USE_PLATFORM_PM_SLEEP_OPS
};
genpd->max_off_time_changed = true;
genpd->domain.ops.runtime_suspend = pm_genpd_runtime_suspend;
genpd->domain.ops.runtime_resume = pm_genpd_runtime_resume;
- genpd->domain.ops.runtime_idle = pm_generic_runtime_idle;
genpd->domain.ops.prepare = pm_genpd_prepare;
genpd->domain.ops.suspend = pm_genpd_suspend;
genpd->domain.ops.suspend_late = pm_genpd_suspend_late;
#include <linux/export.h>
#ifdef CONFIG_PM_RUNTIME
-/**
- * pm_generic_runtime_idle - Generic runtime idle callback for subsystems.
- * @dev: Device to handle.
- *
- * If PM operations are defined for the @dev's driver and they include
- * ->runtime_idle(), execute it and return its error code, if nonzero.
- * Otherwise, execute pm_runtime_suspend() for the device and return 0.
- */
-int pm_generic_runtime_idle(struct device *dev)
-{
- const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
- if (pm && pm->runtime_idle) {
- int ret = pm->runtime_idle(dev);
- if (ret)
- return ret;
- }
-
- pm_runtime_suspend(dev);
- return 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_runtime_idle);
-
/**
* pm_generic_runtime_suspend - Generic runtime suspend callback for subsystems.
* @dev: Device to suspend.
#include <linux/export.h>
#include <linux/pm_runtime.h>
#include <linux/err.h>
+#include <trace/events/power.h>
#include "power.h"
else if (!dev->power.qos)
ret = dev_pm_qos_constraints_allocate(dev);
+ trace_dev_pm_qos_add_request(dev_name(dev), type, value);
if (!ret) {
req->dev = dev;
req->type = type;
return -EINVAL;
}
+ trace_dev_pm_qos_update_request(dev_name(req->dev), req->type,
+ new_value);
if (curr_value != new_value)
ret = apply_constraint(req, PM_QOS_UPDATE_REQ, new_value);
if (IS_ERR_OR_NULL(req->dev->power.qos))
return -ENODEV;
+ trace_dev_pm_qos_remove_request(dev_name(req->dev), req->type,
+ PM_QOS_DEFAULT_VALUE);
ret = apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_DEFAULT_VALUE);
memset(req, 0, sizeof(*req));
return ret;
/* Pending requests need to be canceled. */
dev->power.request = RPM_REQ_NONE;
- if (dev->power.no_callbacks) {
- /* Assume ->runtime_idle() callback would have suspended. */
- retval = rpm_suspend(dev, rpmflags);
+ if (dev->power.no_callbacks)
goto out;
- }
/* Carry out an asynchronous or a synchronous idle notification. */
if (rpmflags & RPM_ASYNC) {
dev->power.request_pending = true;
queue_work(pm_wq, &dev->power.work);
}
- goto out;
+ trace_rpm_return_int(dev, _THIS_IP_, 0);
+ return 0;
}
dev->power.idle_notification = true;
callback = dev->driver->pm->runtime_idle;
if (callback)
- __rpm_callback(callback, dev);
+ retval = __rpm_callback(callback, dev);
dev->power.idle_notification = false;
wake_up_all(&dev->power.wait_queue);
out:
trace_rpm_return_int(dev, _THIS_IP_, retval);
- return retval;
+ return retval ? retval : rpm_suspend(dev, rpmflags);
}
/**
}
EXPORT_SYMBOL_GPL(pm_wakeup_event);
-static void print_active_wakeup_sources(void)
+void pm_print_active_wakeup_sources(void)
{
struct wakeup_source *ws;
int active = 0;
last_activity_ws->name);
rcu_read_unlock();
}
+EXPORT_SYMBOL_GPL(pm_print_active_wakeup_sources);
/**
* pm_wakeup_pending - Check if power transition in progress should be aborted.
}
spin_unlock_irqrestore(&events_lock, flags);
- if (ret)
- print_active_wakeup_sources();
+ if (ret) {
+ pr_info("PM: Wakeup pending, aborting suspend\n");
+ pm_print_active_wakeup_sources();
+ }
return ret;
}
/*
- * Intel Lynxpoint LPSS clocks.
+ * Intel Low Power Subsystem clocks.
*
* Copyright (C) 2013, Intel Corporation
* Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
#include <linux/platform_data/clk-lpss.h>
#include <linux/platform_device.h>
-#define PRV_CLOCK_PARAMS 0x800
-
static int lpt_clk_probe(struct platform_device *pdev)
{
struct lpss_clk_data *drvdata;
};
MODULE_DEVICE_TABLE(x86cpu, acpi_cpufreq_ids);
+static const struct acpi_device_id processor_device_ids[] = {
+ {ACPI_PROCESSOR_OBJECT_HID, },
+ {ACPI_PROCESSOR_DEVICE_HID, },
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, processor_device_ids);
+
MODULE_ALIAS("acpi");
-config CPU_IDLE
+menuconfig CPU_IDLE
bool "CPU idle PM support"
default y if ACPI || PPC_PSERIES
+ select CPU_IDLE_GOV_LADDER if (!NO_HZ && !NO_HZ_IDLE)
+ select CPU_IDLE_GOV_MENU if (NO_HZ || NO_HZ_IDLE)
help
CPU idle is a generic framework for supporting software-controlled
idle processor power management. It includes modular cross-platform
If you're using an ACPI-enabled platform, you should say Y here.
+if CPU_IDLE
+
config CPU_IDLE_MULTIPLE_DRIVERS
bool "Support multiple cpuidle drivers"
- depends on CPU_IDLE
default n
help
Allows the cpuidle framework to use different drivers for each CPU.
states. If unsure say N.
config CPU_IDLE_GOV_LADDER
- bool
- depends on CPU_IDLE
+ bool "Ladder governor (for periodic timer tick)"
default y
config CPU_IDLE_GOV_MENU
- bool
- depends on CPU_IDLE && NO_HZ
+ bool "Menu governor (for tickless system)"
default y
-config ARCH_NEEDS_CPU_IDLE_COUPLED
- def_bool n
-
-if CPU_IDLE
-
config CPU_IDLE_CALXEDA
bool "CPU Idle Driver for Calxeda processors"
depends on ARCH_HIGHBANK
help
Select this to enable cpuidle on Calxeda processors.
+config CPU_IDLE_ZYNQ
+ bool "CPU Idle Driver for Xilinx Zynq processors"
+ depends on ARCH_ZYNQ
+ help
+ Select this to enable cpuidle on Xilinx Zynq processors.
+
endif
+
+config ARCH_NEEDS_CPU_IDLE_COUPLED
+ def_bool n
obj-$(CONFIG_CPU_IDLE_CALXEDA) += cpuidle-calxeda.o
obj-$(CONFIG_ARCH_KIRKWOOD) += cpuidle-kirkwood.o
+obj-$(CONFIG_CPU_IDLE_ZYNQ) += cpuidle-zynq.o
--- /dev/null
+/*
+ * Copyright (C) 2012-2013 Xilinx
+ *
+ * CPU idle support for Xilinx Zynq
+ *
+ * based on arch/arm/mach-at91/cpuidle.c
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * The cpu idle uses wait-for-interrupt and RAM self refresh in order
+ * to implement two idle states -
+ * #1 wait-for-interrupt
+ * #2 wait-for-interrupt and RAM self refresh
+ *
+ * Maintainer: Michal Simek <michal.simek@xilinx.com>
+ */
+
+#include <linux/init.h>
+#include <linux/cpu_pm.h>
+#include <linux/cpuidle.h>
+#include <linux/of.h>
+#include <asm/proc-fns.h>
+#include <asm/cpuidle.h>
+
+#define ZYNQ_MAX_STATES 2
+
+/* Actual code that puts the SoC in different idle states */
+static int zynq_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index)
+{
+ /* Devices must be stopped here */
+ cpu_pm_enter();
+
+ /* Add code for DDR self refresh start */
+ cpu_do_idle();
+
+ /* Add code for DDR self refresh stop */
+ cpu_pm_exit();
+
+ return index;
+}
+
+static struct cpuidle_driver zynq_idle_driver = {
+ .name = "zynq_idle",
+ .owner = THIS_MODULE,
+ .states = {
+ ARM_CPUIDLE_WFI_STATE,
+ {
+ .enter = zynq_enter_idle,
+ .exit_latency = 10,
+ .target_residency = 10000,
+ .flags = CPUIDLE_FLAG_TIME_VALID |
+ CPUIDLE_FLAG_TIMER_STOP,
+ .name = "RAM_SR",
+ .desc = "WFI and RAM Self Refresh",
+ },
+ },
+ .safe_state_index = 0,
+ .state_count = ZYNQ_MAX_STATES,
+};
+
+/* Initialize CPU idle by registering the idle states */
+static int __init zynq_cpuidle_init(void)
+{
+ if (!of_machine_is_compatible("xlnx,zynq-7000"))
+ return -ENODEV;
+
+ pr_info("Xilinx Zynq CpuIdle Driver started\n");
+
+ return cpuidle_register(&zynq_idle_driver, NULL);
+}
+
+device_initcall(zynq_cpuidle_init);
int cpu;
struct cpuidle_device *device;
- for_each_possible_cpu(cpu) {
+ for_each_cpu(cpu, drv->cpumask) {
device = &per_cpu(cpuidle_dev, cpu);
cpuidle_unregister_device(device);
}
return ret;
}
- for_each_possible_cpu(cpu) {
+ for_each_cpu(cpu, drv->cpumask) {
device = &per_cpu(cpuidle_dev, cpu);
device->cpu = cpu;
DEFINE_SPINLOCK(cpuidle_driver_lock);
-static void __cpuidle_set_cpu_driver(struct cpuidle_driver *drv, int cpu);
-static struct cpuidle_driver * __cpuidle_get_cpu_driver(int cpu);
+#ifdef CONFIG_CPU_IDLE_MULTIPLE_DRIVERS
-static void cpuidle_setup_broadcast_timer(void *arg)
+static DEFINE_PER_CPU(struct cpuidle_driver *, cpuidle_drivers);
+
+/**
+ * __cpuidle_get_cpu_driver - return the cpuidle driver tied to a CPU.
+ * @cpu: the CPU handled by the driver
+ *
+ * Returns a pointer to struct cpuidle_driver or NULL if no driver has been
+ * registered for @cpu.
+ */
+static struct cpuidle_driver *__cpuidle_get_cpu_driver(int cpu)
{
- int cpu = smp_processor_id();
- clockevents_notify((long)(arg), &cpu);
+ return per_cpu(cpuidle_drivers, cpu);
}
-static void __cpuidle_driver_init(struct cpuidle_driver *drv, int cpu)
+/**
+ * __cpuidle_unset_driver - unset per CPU driver variables.
+ * @drv: a valid pointer to a struct cpuidle_driver
+ *
+ * For each CPU in the driver's CPU mask, unset the registered driver per CPU
+ * variable. If @drv is different from the registered driver, the corresponding
+ * variable is not cleared.
+ */
+static inline void __cpuidle_unset_driver(struct cpuidle_driver *drv)
{
- int i;
-
- drv->refcnt = 0;
+ int cpu;
- for (i = drv->state_count - 1; i >= 0 ; i--) {
+ for_each_cpu(cpu, drv->cpumask) {
- if (!(drv->states[i].flags & CPUIDLE_FLAG_TIMER_STOP))
+ if (drv != __cpuidle_get_cpu_driver(cpu))
continue;
- drv->bctimer = 1;
- on_each_cpu_mask(get_cpu_mask(cpu), cpuidle_setup_broadcast_timer,
- (void *)CLOCK_EVT_NOTIFY_BROADCAST_ON, 1);
- break;
+ per_cpu(cpuidle_drivers, cpu) = NULL;
}
}
-static int __cpuidle_register_driver(struct cpuidle_driver *drv, int cpu)
+/**
+ * __cpuidle_set_driver - set per CPU driver variables the the given driver.
+ * @drv: a valid pointer to a struct cpuidle_driver
+ *
+ * For each CPU in the driver's cpumask, unset the registered driver per CPU
+ * to @drv.
+ *
+ * Returns 0 on success, -EBUSY if the CPUs have driver(s) already.
+ */
+static inline int __cpuidle_set_driver(struct cpuidle_driver *drv)
{
- if (!drv || !drv->state_count)
- return -EINVAL;
-
- if (cpuidle_disabled())
- return -ENODEV;
+ int cpu;
- if (__cpuidle_get_cpu_driver(cpu))
- return -EBUSY;
+ for_each_cpu(cpu, drv->cpumask) {
- __cpuidle_driver_init(drv, cpu);
+ if (__cpuidle_get_cpu_driver(cpu)) {
+ __cpuidle_unset_driver(drv);
+ return -EBUSY;
+ }
- __cpuidle_set_cpu_driver(drv, cpu);
+ per_cpu(cpuidle_drivers, cpu) = drv;
+ }
return 0;
}
-static void __cpuidle_unregister_driver(struct cpuidle_driver *drv, int cpu)
-{
- if (drv != __cpuidle_get_cpu_driver(cpu))
- return;
+#else
- if (!WARN_ON(drv->refcnt > 0))
- __cpuidle_set_cpu_driver(NULL, cpu);
+static struct cpuidle_driver *cpuidle_curr_driver;
- if (drv->bctimer) {
- drv->bctimer = 0;
- on_each_cpu_mask(get_cpu_mask(cpu), cpuidle_setup_broadcast_timer,
- (void *)CLOCK_EVT_NOTIFY_BROADCAST_OFF, 1);
- }
+/**
+ * __cpuidle_get_cpu_driver - return the global cpuidle driver pointer.
+ * @cpu: ignored without the multiple driver support
+ *
+ * Return a pointer to a struct cpuidle_driver object or NULL if no driver was
+ * previously registered.
+ */
+static inline struct cpuidle_driver *__cpuidle_get_cpu_driver(int cpu)
+{
+ return cpuidle_curr_driver;
}
-#ifdef CONFIG_CPU_IDLE_MULTIPLE_DRIVERS
+/**
+ * __cpuidle_set_driver - assign the global cpuidle driver variable.
+ * @drv: pointer to a struct cpuidle_driver object
+ *
+ * Returns 0 on success, -EBUSY if the driver is already registered.
+ */
+static inline int __cpuidle_set_driver(struct cpuidle_driver *drv)
+{
+ if (cpuidle_curr_driver)
+ return -EBUSY;
-static DEFINE_PER_CPU(struct cpuidle_driver *, cpuidle_drivers);
+ cpuidle_curr_driver = drv;
-static void __cpuidle_set_cpu_driver(struct cpuidle_driver *drv, int cpu)
-{
- per_cpu(cpuidle_drivers, cpu) = drv;
+ return 0;
}
-static struct cpuidle_driver *__cpuidle_get_cpu_driver(int cpu)
+/**
+ * __cpuidle_unset_driver - unset the global cpuidle driver variable.
+ * @drv: a pointer to a struct cpuidle_driver
+ *
+ * Reset the global cpuidle variable to NULL. If @drv does not match the
+ * registered driver, do nothing.
+ */
+static inline void __cpuidle_unset_driver(struct cpuidle_driver *drv)
{
- return per_cpu(cpuidle_drivers, cpu);
+ if (drv == cpuidle_curr_driver)
+ cpuidle_curr_driver = NULL;
}
-static void __cpuidle_unregister_all_cpu_driver(struct cpuidle_driver *drv)
+#endif
+
+/**
+ * cpuidle_setup_broadcast_timer - enable/disable the broadcast timer
+ * @arg: a void pointer used to match the SMP cross call API
+ *
+ * @arg is used as a value of type 'long' with on of the two values:
+ * - CLOCK_EVT_NOTIFY_BROADCAST_ON
+ * - CLOCK_EVT_NOTIFY_BROADCAST_OFF
+ *
+ * Set the broadcast timer notification for the current CPU. This function
+ * is executed per CPU by an SMP cross call. It not supposed to be called
+ * directly.
+ */
+static void cpuidle_setup_broadcast_timer(void *arg)
{
- int cpu;
- for_each_present_cpu(cpu)
- __cpuidle_unregister_driver(drv, cpu);
+ int cpu = smp_processor_id();
+ clockevents_notify((long)(arg), &cpu);
}
-static int __cpuidle_register_all_cpu_driver(struct cpuidle_driver *drv)
+/**
+ * __cpuidle_driver_init - initialize the driver's internal data
+ * @drv: a valid pointer to a struct cpuidle_driver
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ */
+static int __cpuidle_driver_init(struct cpuidle_driver *drv)
{
- int ret = 0;
- int i, cpu;
+ int i;
- for_each_present_cpu(cpu) {
- ret = __cpuidle_register_driver(drv, cpu);
- if (ret)
- break;
- }
+ drv->refcnt = 0;
- if (ret)
- for_each_present_cpu(i) {
- if (i == cpu)
- break;
- __cpuidle_unregister_driver(drv, i);
- }
+ /*
+ * Use all possible CPUs as the default, because if the kernel boots
+ * with some CPUs offline and then we online one of them, the CPU
+ * notifier has to know which driver to assign.
+ */
+ if (!drv->cpumask)
+ drv->cpumask = (struct cpumask *)cpu_possible_mask;
+
+ /*
+ * Look for the timer stop flag in the different states, so that we know
+ * if the broadcast timer has to be set up. The loop is in the reverse
+ * order, because usually on of the the deeper states has this flag set.
+ */
+ for (i = drv->state_count - 1; i >= 0 ; i--) {
+ if (!(drv->states[i].flags & CPUIDLE_FLAG_TIMER_STOP))
+ continue;
- return ret;
+ drv->bctimer = 1;
+ break;
+ }
+
+ return 0;
}
-int cpuidle_register_cpu_driver(struct cpuidle_driver *drv, int cpu)
+/**
+ * __cpuidle_register_driver: register the driver
+ * @drv: a valid pointer to a struct cpuidle_driver
+ *
+ * Do some sanity checks, initialize the driver, assign the driver to the
+ * global cpuidle driver variable(s) and set up the broadcast timer if the
+ * cpuidle driver has some states that shut down the local timer.
+ *
+ * Returns 0 on success, a negative error code otherwise:
+ * * -EINVAL if the driver pointer is NULL or no idle states are available
+ * * -ENODEV if the cpuidle framework is disabled
+ * * -EBUSY if the driver is already assigned to the global variable(s)
+ */
+static int __cpuidle_register_driver(struct cpuidle_driver *drv)
{
int ret;
- spin_lock(&cpuidle_driver_lock);
- ret = __cpuidle_register_driver(drv, cpu);
- spin_unlock(&cpuidle_driver_lock);
+ if (!drv || !drv->state_count)
+ return -EINVAL;
- return ret;
-}
+ if (cpuidle_disabled())
+ return -ENODEV;
-void cpuidle_unregister_cpu_driver(struct cpuidle_driver *drv, int cpu)
-{
- spin_lock(&cpuidle_driver_lock);
- __cpuidle_unregister_driver(drv, cpu);
- spin_unlock(&cpuidle_driver_lock);
-}
+ ret = __cpuidle_driver_init(drv);
+ if (ret)
+ return ret;
-/**
- * cpuidle_register_driver - registers a driver
- * @drv: the driver
- */
-int cpuidle_register_driver(struct cpuidle_driver *drv)
-{
- int ret;
+ ret = __cpuidle_set_driver(drv);
+ if (ret)
+ return ret;
- spin_lock(&cpuidle_driver_lock);
- ret = __cpuidle_register_all_cpu_driver(drv);
- spin_unlock(&cpuidle_driver_lock);
+ if (drv->bctimer)
+ on_each_cpu_mask(drv->cpumask, cpuidle_setup_broadcast_timer,
+ (void *)CLOCK_EVT_NOTIFY_BROADCAST_ON, 1);
- return ret;
+ return 0;
}
-EXPORT_SYMBOL_GPL(cpuidle_register_driver);
/**
- * cpuidle_unregister_driver - unregisters a driver
- * @drv: the driver
+ * __cpuidle_unregister_driver - unregister the driver
+ * @drv: a valid pointer to a struct cpuidle_driver
+ *
+ * Check if the driver is no longer in use, reset the global cpuidle driver
+ * variable(s) and disable the timer broadcast notification mechanism if it was
+ * in use.
+ *
*/
-void cpuidle_unregister_driver(struct cpuidle_driver *drv)
+static void __cpuidle_unregister_driver(struct cpuidle_driver *drv)
{
- spin_lock(&cpuidle_driver_lock);
- __cpuidle_unregister_all_cpu_driver(drv);
- spin_unlock(&cpuidle_driver_lock);
-}
-EXPORT_SYMBOL_GPL(cpuidle_unregister_driver);
-
-#else
-
-static struct cpuidle_driver *cpuidle_curr_driver;
+ if (WARN_ON(drv->refcnt > 0))
+ return;
-static inline void __cpuidle_set_cpu_driver(struct cpuidle_driver *drv, int cpu)
-{
- cpuidle_curr_driver = drv;
-}
+ if (drv->bctimer) {
+ drv->bctimer = 0;
+ on_each_cpu_mask(drv->cpumask, cpuidle_setup_broadcast_timer,
+ (void *)CLOCK_EVT_NOTIFY_BROADCAST_OFF, 1);
+ }
-static inline struct cpuidle_driver *__cpuidle_get_cpu_driver(int cpu)
-{
- return cpuidle_curr_driver;
+ __cpuidle_unset_driver(drv);
}
/**
* cpuidle_register_driver - registers a driver
- * @drv: the driver
+ * @drv: a pointer to a valid struct cpuidle_driver
+ *
+ * Register the driver under a lock to prevent concurrent attempts to
+ * [un]register the driver from occuring at the same time.
+ *
+ * Returns 0 on success, a negative error code (returned by
+ * __cpuidle_register_driver()) otherwise.
*/
int cpuidle_register_driver(struct cpuidle_driver *drv)
{
- int ret, cpu;
+ int ret;
- cpu = get_cpu();
spin_lock(&cpuidle_driver_lock);
- ret = __cpuidle_register_driver(drv, cpu);
+ ret = __cpuidle_register_driver(drv);
spin_unlock(&cpuidle_driver_lock);
- put_cpu();
return ret;
}
/**
* cpuidle_unregister_driver - unregisters a driver
- * @drv: the driver
+ * @drv: a pointer to a valid struct cpuidle_driver
+ *
+ * Unregisters the cpuidle driver under a lock to prevent concurrent attempts
+ * to [un]register the driver from occuring at the same time. @drv has to
+ * match the currently registered driver.
*/
void cpuidle_unregister_driver(struct cpuidle_driver *drv)
{
- int cpu;
-
- cpu = get_cpu();
spin_lock(&cpuidle_driver_lock);
- __cpuidle_unregister_driver(drv, cpu);
+ __cpuidle_unregister_driver(drv);
spin_unlock(&cpuidle_driver_lock);
- put_cpu();
}
EXPORT_SYMBOL_GPL(cpuidle_unregister_driver);
-#endif
/**
- * cpuidle_get_driver - return the current driver
+ * cpuidle_get_driver - return the driver tied to the current CPU.
+ *
+ * Returns a struct cpuidle_driver pointer, or NULL if no driver is registered.
*/
struct cpuidle_driver *cpuidle_get_driver(void)
{
EXPORT_SYMBOL_GPL(cpuidle_get_driver);
/**
- * cpuidle_get_cpu_driver - return the driver tied with a cpu
+ * cpuidle_get_cpu_driver - return the driver registered for a CPU.
+ * @dev: a valid pointer to a struct cpuidle_device
+ *
+ * Returns a struct cpuidle_driver pointer, or NULL if no driver is registered
+ * for the CPU associated with @dev.
*/
struct cpuidle_driver *cpuidle_get_cpu_driver(struct cpuidle_device *dev)
{
}
EXPORT_SYMBOL_GPL(cpuidle_get_cpu_driver);
+/**
+ * cpuidle_driver_ref - get a reference to the driver.
+ *
+ * Increment the reference counter of the cpuidle driver associated with
+ * the current CPU.
+ *
+ * Returns a pointer to the driver, or NULL if the current CPU has no driver.
+ */
struct cpuidle_driver *cpuidle_driver_ref(void)
{
struct cpuidle_driver *drv;
return drv;
}
+/**
+ * cpuidle_driver_unref - puts down the refcount for the driver
+ *
+ * Decrement the reference counter of the cpuidle driver associated with
+ * the current CPU.
+ */
void cpuidle_driver_unref(void)
{
struct cpuidle_driver *drv = cpuidle_get_driver();
config ARM_EXYNOS4_BUS_DEVFREQ
bool "ARM Exynos4210/4212/4412 Memory Bus DEVFREQ Driver"
- depends on CPU_EXYNOS4210 || CPU_EXYNOS4212 || CPU_EXYNOS4412
+ depends on CPU_EXYNOS4210 || SOC_EXYNOS4212 || SOC_EXYNOS4412
select ARCH_HAS_OPP
select DEVFREQ_GOV_SIMPLE_ONDEMAND
help
To operate with optimal voltages, ASV support is required
(CONFIG_EXYNOS_ASV).
+config ARM_EXYNOS5_BUS_DEVFREQ
+ bool "ARM Exynos5250 Bus DEVFREQ Driver"
+ depends on SOC_EXYNOS5250
+ select ARCH_HAS_OPP
+ select DEVFREQ_GOV_SIMPLE_ONDEMAND
+ help
+ This adds the DEVFREQ driver for Exynos5250 bus interface (vdd_int).
+ It reads PPMU counters of memory controllers and adjusts the
+ operating frequencies and voltages with OPP support.
+
endif # PM_DEVFREQ
obj-$(CONFIG_DEVFREQ_GOV_USERSPACE) += governor_userspace.o
# DEVFREQ Drivers
-obj-$(CONFIG_ARM_EXYNOS4_BUS_DEVFREQ) += exynos4_bus.o
+obj-$(CONFIG_ARM_EXYNOS4_BUS_DEVFREQ) += exynos/
+obj-$(CONFIG_ARM_EXYNOS5_BUS_DEVFREQ) += exynos/
return;
}
+ devfreq_update_status(devfreq, devfreq->previous_freq);
devfreq->stop_polling = true;
mutex_unlock(&devfreq->lock);
cancel_delayed_work_sync(&devfreq->work);
*/
void devfreq_monitor_resume(struct devfreq *devfreq)
{
+ unsigned long freq;
+
mutex_lock(&devfreq->lock);
if (!devfreq->stop_polling)
goto out;
devfreq->profile->polling_ms)
queue_delayed_work(devfreq_wq, &devfreq->work,
msecs_to_jiffies(devfreq->profile->polling_ms));
+
+ devfreq->last_stat_updated = jiffies;
devfreq->stop_polling = false;
+ if (devfreq->profile->get_cur_freq &&
+ !devfreq->profile->get_cur_freq(devfreq->dev.parent, &freq))
+ devfreq->previous_freq = freq;
+
out:
mutex_unlock(&devfreq->lock);
}
/**
* devfreq_remove_device() - Remove devfreq feature from a device.
* @devfreq: the devfreq instance to be removed
+ *
+ * The opposite of devfreq_add_device().
*/
int devfreq_remove_device(struct devfreq *devfreq)
{
/**
* devfreq_suspend_device() - Suspend devfreq of a device.
* @devfreq: the devfreq instance to be suspended
+ *
+ * This function is intended to be called by the pm callbacks
+ * (e.g., runtime_suspend, suspend) of the device driver that
+ * holds the devfreq.
*/
int devfreq_suspend_device(struct devfreq *devfreq)
{
/**
* devfreq_resume_device() - Resume devfreq of a device.
* @devfreq: the devfreq instance to be resumed
+ *
+ * This function is intended to be called by the pm callbacks
+ * (e.g., runtime_resume, resume) of the device driver that
+ * holds the devfreq.
*/
int devfreq_resume_device(struct devfreq *devfreq)
{
{
struct devfreq *devfreq = to_devfreq(dev);
ssize_t len;
- int i, j, err;
+ int i, j;
unsigned int max_state = devfreq->profile->max_state;
- err = devfreq_update_status(devfreq, devfreq->previous_freq);
- if (err)
+ if (!devfreq->stop_polling &&
+ devfreq_update_status(devfreq, devfreq->previous_freq))
return 0;
len = sprintf(buf, " From : To\n");
--- /dev/null
+# Exynos DEVFREQ Drivers
+obj-$(CONFIG_ARM_EXYNOS4_BUS_DEVFREQ) += exynos4_bus.o
+obj-$(CONFIG_ARM_EXYNOS5_BUS_DEVFREQ) += exynos_ppmu.o exynos5_bus.o
rcu_read_unlock();
dev_err(data->dev, "%s: unable to find a min freq\n",
__func__);
+ mutex_unlock(&data->lock);
return PTR_ERR(opp);
}
new_oppinfo.rate = opp_get_freq(opp);
--- /dev/null
+/*
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * EXYNOS5 INT clock frequency scaling support using DEVFREQ framework
+ * Based on work done by Jonghwan Choi <jhbird.choi@samsung.com>
+ * Support for only EXYNOS5250 is present.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/devfreq.h>
+#include <linux/io.h>
+#include <linux/opp.h>
+#include <linux/slab.h>
+#include <linux/suspend.h>
+#include <linux/opp.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/pm_qos.h>
+#include <linux/regulator/consumer.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+
+#include "exynos_ppmu.h"
+
+#define MAX_SAFEVOLT 1100000 /* 1.10V */
+/* Assume that the bus is saturated if the utilization is 25% */
+#define INT_BUS_SATURATION_RATIO 25
+
+enum int_level_idx {
+ LV_0,
+ LV_1,
+ LV_2,
+ LV_3,
+ LV_4,
+ _LV_END
+};
+
+enum exynos_ppmu_list {
+ PPMU_RIGHT,
+ PPMU_END,
+};
+
+struct busfreq_data_int {
+ struct device *dev;
+ struct devfreq *devfreq;
+ struct regulator *vdd_int;
+ struct exynos_ppmu ppmu[PPMU_END];
+ unsigned long curr_freq;
+ bool disabled;
+
+ struct notifier_block pm_notifier;
+ struct mutex lock;
+ struct pm_qos_request int_req;
+ struct clk *int_clk;
+};
+
+struct int_bus_opp_table {
+ unsigned int idx;
+ unsigned long clk;
+ unsigned long volt;
+};
+
+static struct int_bus_opp_table exynos5_int_opp_table[] = {
+ {LV_0, 266000, 1025000},
+ {LV_1, 200000, 1025000},
+ {LV_2, 160000, 1025000},
+ {LV_3, 133000, 1025000},
+ {LV_4, 100000, 1025000},
+ {0, 0, 0},
+};
+
+static void busfreq_mon_reset(struct busfreq_data_int *data)
+{
+ unsigned int i;
+
+ for (i = PPMU_RIGHT; i < PPMU_END; i++) {
+ void __iomem *ppmu_base = data->ppmu[i].hw_base;
+
+ /* Reset the performance and cycle counters */
+ exynos_ppmu_reset(ppmu_base);
+
+ /* Setup count registers to monitor read/write transactions */
+ data->ppmu[i].event[PPMU_PMNCNT3] = RDWR_DATA_COUNT;
+ exynos_ppmu_setevent(ppmu_base, PPMU_PMNCNT3,
+ data->ppmu[i].event[PPMU_PMNCNT3]);
+
+ exynos_ppmu_start(ppmu_base);
+ }
+}
+
+static void exynos5_read_ppmu(struct busfreq_data_int *data)
+{
+ int i, j;
+
+ for (i = PPMU_RIGHT; i < PPMU_END; i++) {
+ void __iomem *ppmu_base = data->ppmu[i].hw_base;
+
+ exynos_ppmu_stop(ppmu_base);
+
+ /* Update local data from PPMU */
+ data->ppmu[i].ccnt = __raw_readl(ppmu_base + PPMU_CCNT);
+
+ for (j = PPMU_PMNCNT0; j < PPMU_PMNCNT_MAX; j++) {
+ if (data->ppmu[i].event[j] == 0)
+ data->ppmu[i].count[j] = 0;
+ else
+ data->ppmu[i].count[j] =
+ exynos_ppmu_read(ppmu_base, j);
+ }
+ }
+
+ busfreq_mon_reset(data);
+}
+
+static int exynos5_int_setvolt(struct busfreq_data_int *data,
+ unsigned long volt)
+{
+ return regulator_set_voltage(data->vdd_int, volt, MAX_SAFEVOLT);
+}
+
+static int exynos5_busfreq_int_target(struct device *dev, unsigned long *_freq,
+ u32 flags)
+{
+ int err = 0;
+ struct platform_device *pdev = container_of(dev, struct platform_device,
+ dev);
+ struct busfreq_data_int *data = platform_get_drvdata(pdev);
+ struct opp *opp;
+ unsigned long old_freq, freq;
+ unsigned long volt;
+
+ rcu_read_lock();
+ opp = devfreq_recommended_opp(dev, _freq, flags);
+ if (IS_ERR(opp)) {
+ rcu_read_unlock();
+ dev_err(dev, "%s: Invalid OPP.\n", __func__);
+ return PTR_ERR(opp);
+ }
+
+ freq = opp_get_freq(opp);
+ volt = opp_get_voltage(opp);
+ rcu_read_unlock();
+
+ old_freq = data->curr_freq;
+
+ if (old_freq == freq)
+ return 0;
+
+ dev_dbg(dev, "targetting %lukHz %luuV\n", freq, volt);
+
+ mutex_lock(&data->lock);
+
+ if (data->disabled)
+ goto out;
+
+ if (freq > exynos5_int_opp_table[0].clk)
+ pm_qos_update_request(&data->int_req, freq * 16 / 1000);
+ else
+ pm_qos_update_request(&data->int_req, -1);
+
+ if (old_freq < freq)
+ err = exynos5_int_setvolt(data, volt);
+ if (err)
+ goto out;
+
+ err = clk_set_rate(data->int_clk, freq * 1000);
+
+ if (err)
+ goto out;
+
+ if (old_freq > freq)
+ err = exynos5_int_setvolt(data, volt);
+ if (err)
+ goto out;
+
+ data->curr_freq = freq;
+out:
+ mutex_unlock(&data->lock);
+ return err;
+}
+
+static int exynos5_get_busier_dmc(struct busfreq_data_int *data)
+{
+ int i, j;
+ int busy = 0;
+ unsigned int temp = 0;
+
+ for (i = PPMU_RIGHT; i < PPMU_END; i++) {
+ for (j = PPMU_PMNCNT0; j < PPMU_PMNCNT_MAX; j++) {
+ if (data->ppmu[i].count[j] > temp) {
+ temp = data->ppmu[i].count[j];
+ busy = i;
+ }
+ }
+ }
+
+ return busy;
+}
+
+static int exynos5_int_get_dev_status(struct device *dev,
+ struct devfreq_dev_status *stat)
+{
+ struct platform_device *pdev = container_of(dev, struct platform_device,
+ dev);
+ struct busfreq_data_int *data = platform_get_drvdata(pdev);
+ int busier_dmc;
+
+ exynos5_read_ppmu(data);
+ busier_dmc = exynos5_get_busier_dmc(data);
+
+ stat->current_frequency = data->curr_freq;
+
+ /* Number of cycles spent on memory access */
+ stat->busy_time = data->ppmu[busier_dmc].count[PPMU_PMNCNT3];
+ stat->busy_time *= 100 / INT_BUS_SATURATION_RATIO;
+ stat->total_time = data->ppmu[busier_dmc].ccnt;
+
+ return 0;
+}
+static void exynos5_int_exit(struct device *dev)
+{
+ struct platform_device *pdev = container_of(dev, struct platform_device,
+ dev);
+ struct busfreq_data_int *data = platform_get_drvdata(pdev);
+
+ devfreq_unregister_opp_notifier(dev, data->devfreq);
+}
+
+static struct devfreq_dev_profile exynos5_devfreq_int_profile = {
+ .initial_freq = 160000,
+ .polling_ms = 100,
+ .target = exynos5_busfreq_int_target,
+ .get_dev_status = exynos5_int_get_dev_status,
+ .exit = exynos5_int_exit,
+};
+
+static int exynos5250_init_int_tables(struct busfreq_data_int *data)
+{
+ int i, err = 0;
+
+ for (i = LV_0; i < _LV_END; i++) {
+ err = opp_add(data->dev, exynos5_int_opp_table[i].clk,
+ exynos5_int_opp_table[i].volt);
+ if (err) {
+ dev_err(data->dev, "Cannot add opp entries.\n");
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static int exynos5_busfreq_int_pm_notifier_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct busfreq_data_int *data = container_of(this,
+ struct busfreq_data_int, pm_notifier);
+ struct opp *opp;
+ unsigned long maxfreq = ULONG_MAX;
+ unsigned long freq;
+ unsigned long volt;
+ int err = 0;
+
+ switch (event) {
+ case PM_SUSPEND_PREPARE:
+ /* Set Fastest and Deactivate DVFS */
+ mutex_lock(&data->lock);
+
+ data->disabled = true;
+
+ rcu_read_lock();
+ opp = opp_find_freq_floor(data->dev, &maxfreq);
+ if (IS_ERR(opp)) {
+ rcu_read_unlock();
+ err = PTR_ERR(opp);
+ goto unlock;
+ }
+ freq = opp_get_freq(opp);
+ volt = opp_get_voltage(opp);
+ rcu_read_unlock();
+
+ err = exynos5_int_setvolt(data, volt);
+ if (err)
+ goto unlock;
+
+ err = clk_set_rate(data->int_clk, freq * 1000);
+
+ if (err)
+ goto unlock;
+
+ data->curr_freq = freq;
+unlock:
+ mutex_unlock(&data->lock);
+ if (err)
+ return NOTIFY_BAD;
+ return NOTIFY_OK;
+ case PM_POST_RESTORE:
+ case PM_POST_SUSPEND:
+ /* Reactivate */
+ mutex_lock(&data->lock);
+ data->disabled = false;
+ mutex_unlock(&data->lock);
+ return NOTIFY_OK;
+ }
+
+ return NOTIFY_DONE;
+}
+
+static int exynos5_busfreq_int_probe(struct platform_device *pdev)
+{
+ struct busfreq_data_int *data;
+ struct opp *opp;
+ struct device *dev = &pdev->dev;
+ struct device_node *np;
+ unsigned long initial_freq;
+ unsigned long initial_volt;
+ int err = 0;
+ int i;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(struct busfreq_data_int),
+ GFP_KERNEL);
+ if (data == NULL) {
+ dev_err(dev, "Cannot allocate memory.\n");
+ return -ENOMEM;
+ }
+
+ np = of_find_compatible_node(NULL, NULL, "samsung,exynos5250-ppmu");
+ if (np == NULL) {
+ pr_err("Unable to find PPMU node\n");
+ return -ENOENT;
+ }
+
+ for (i = PPMU_RIGHT; i < PPMU_END; i++) {
+ /* map PPMU memory region */
+ data->ppmu[i].hw_base = of_iomap(np, i);
+ if (data->ppmu[i].hw_base == NULL) {
+ dev_err(&pdev->dev, "failed to map memory region\n");
+ return -ENOMEM;
+ }
+ }
+ data->pm_notifier.notifier_call = exynos5_busfreq_int_pm_notifier_event;
+ data->dev = dev;
+ mutex_init(&data->lock);
+
+ err = exynos5250_init_int_tables(data);
+ if (err)
+ goto err_regulator;
+
+ data->vdd_int = regulator_get(dev, "vdd_int");
+ if (IS_ERR(data->vdd_int)) {
+ dev_err(dev, "Cannot get the regulator \"vdd_int\"\n");
+ err = PTR_ERR(data->vdd_int);
+ goto err_regulator;
+ }
+
+ data->int_clk = clk_get(dev, "int_clk");
+ if (IS_ERR(data->int_clk)) {
+ dev_err(dev, "Cannot get clock \"int_clk\"\n");
+ err = PTR_ERR(data->int_clk);
+ goto err_clock;
+ }
+
+ rcu_read_lock();
+ opp = opp_find_freq_floor(dev,
+ &exynos5_devfreq_int_profile.initial_freq);
+ if (IS_ERR(opp)) {
+ rcu_read_unlock();
+ dev_err(dev, "Invalid initial frequency %lu kHz.\n",
+ exynos5_devfreq_int_profile.initial_freq);
+ err = PTR_ERR(opp);
+ goto err_opp_add;
+ }
+ initial_freq = opp_get_freq(opp);
+ initial_volt = opp_get_voltage(opp);
+ rcu_read_unlock();
+ data->curr_freq = initial_freq;
+
+ err = clk_set_rate(data->int_clk, initial_freq * 1000);
+ if (err) {
+ dev_err(dev, "Failed to set initial frequency\n");
+ goto err_opp_add;
+ }
+
+ err = exynos5_int_setvolt(data, initial_volt);
+ if (err)
+ goto err_opp_add;
+
+ platform_set_drvdata(pdev, data);
+
+ busfreq_mon_reset(data);
+
+ data->devfreq = devfreq_add_device(dev, &exynos5_devfreq_int_profile,
+ "simple_ondemand", NULL);
+
+ if (IS_ERR(data->devfreq)) {
+ err = PTR_ERR(data->devfreq);
+ goto err_devfreq_add;
+ }
+
+ devfreq_register_opp_notifier(dev, data->devfreq);
+
+ err = register_pm_notifier(&data->pm_notifier);
+ if (err) {
+ dev_err(dev, "Failed to setup pm notifier\n");
+ goto err_devfreq_add;
+ }
+
+ /* TODO: Add a new QOS class for int/mif bus */
+ pm_qos_add_request(&data->int_req, PM_QOS_NETWORK_THROUGHPUT, -1);
+
+ return 0;
+
+err_devfreq_add:
+ devfreq_remove_device(data->devfreq);
+ platform_set_drvdata(pdev, NULL);
+err_opp_add:
+ clk_put(data->int_clk);
+err_clock:
+ regulator_put(data->vdd_int);
+err_regulator:
+ return err;
+}
+
+static int exynos5_busfreq_int_remove(struct platform_device *pdev)
+{
+ struct busfreq_data_int *data = platform_get_drvdata(pdev);
+
+ pm_qos_remove_request(&data->int_req);
+ unregister_pm_notifier(&data->pm_notifier);
+ devfreq_remove_device(data->devfreq);
+ regulator_put(data->vdd_int);
+ clk_put(data->int_clk);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static int exynos5_busfreq_int_resume(struct device *dev)
+{
+ struct platform_device *pdev = container_of(dev, struct platform_device,
+ dev);
+ struct busfreq_data_int *data = platform_get_drvdata(pdev);
+
+ busfreq_mon_reset(data);
+ return 0;
+}
+
+static const struct dev_pm_ops exynos5_busfreq_int_pm = {
+ .resume = exynos5_busfreq_int_resume,
+};
+
+/* platform device pointer for exynos5 devfreq device. */
+static struct platform_device *exynos5_devfreq_pdev;
+
+static struct platform_driver exynos5_busfreq_int_driver = {
+ .probe = exynos5_busfreq_int_probe,
+ .remove = exynos5_busfreq_int_remove,
+ .driver = {
+ .name = "exynos5-bus-int",
+ .owner = THIS_MODULE,
+ .pm = &exynos5_busfreq_int_pm,
+ },
+};
+
+static int __init exynos5_busfreq_int_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&exynos5_busfreq_int_driver);
+ if (ret < 0)
+ goto out;
+
+ exynos5_devfreq_pdev =
+ platform_device_register_simple("exynos5-bus-int", -1, NULL, 0);
+ if (IS_ERR_OR_NULL(exynos5_devfreq_pdev)) {
+ ret = PTR_ERR(exynos5_devfreq_pdev);
+ goto out1;
+ }
+
+ return 0;
+out1:
+ platform_driver_unregister(&exynos5_busfreq_int_driver);
+out:
+ return ret;
+}
+late_initcall(exynos5_busfreq_int_init);
+
+static void __exit exynos5_busfreq_int_exit(void)
+{
+ platform_device_unregister(exynos5_devfreq_pdev);
+ platform_driver_unregister(&exynos5_busfreq_int_driver);
+}
+module_exit(exynos5_busfreq_int_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("EXYNOS5 busfreq driver with devfreq framework");
--- /dev/null
+/*
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * EXYNOS - PPMU support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/io.h>
+
+#include "exynos_ppmu.h"
+
+void exynos_ppmu_reset(void __iomem *ppmu_base)
+{
+ __raw_writel(PPMU_CYCLE_RESET | PPMU_COUNTER_RESET, ppmu_base);
+ __raw_writel(PPMU_ENABLE_CYCLE |
+ PPMU_ENABLE_COUNT0 |
+ PPMU_ENABLE_COUNT1 |
+ PPMU_ENABLE_COUNT2 |
+ PPMU_ENABLE_COUNT3,
+ ppmu_base + PPMU_CNTENS);
+}
+
+void exynos_ppmu_setevent(void __iomem *ppmu_base, unsigned int ch,
+ unsigned int evt)
+{
+ __raw_writel(evt, ppmu_base + PPMU_BEVTSEL(ch));
+}
+
+void exynos_ppmu_start(void __iomem *ppmu_base)
+{
+ __raw_writel(PPMU_ENABLE, ppmu_base);
+}
+
+void exynos_ppmu_stop(void __iomem *ppmu_base)
+{
+ __raw_writel(PPMU_DISABLE, ppmu_base);
+}
+
+unsigned int exynos_ppmu_read(void __iomem *ppmu_base, unsigned int ch)
+{
+ unsigned int total;
+
+ if (ch == PPMU_PMNCNT3)
+ total = ((__raw_readl(ppmu_base + PMCNT_OFFSET(ch)) << 8) |
+ __raw_readl(ppmu_base + PMCNT_OFFSET(ch + 1)));
+ else
+ total = __raw_readl(ppmu_base + PMCNT_OFFSET(ch));
+
+ return total;
+}
--- /dev/null
+/*
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * EXYNOS PPMU header
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#ifndef __DEVFREQ_EXYNOS_PPMU_H
+#define __DEVFREQ_EXYNOS_PPMU_H __FILE__
+
+#include <linux/ktime.h>
+
+/* For PPMU Control */
+#define PPMU_ENABLE BIT(0)
+#define PPMU_DISABLE 0x0
+#define PPMU_CYCLE_RESET BIT(1)
+#define PPMU_COUNTER_RESET BIT(2)
+
+#define PPMU_ENABLE_COUNT0 BIT(0)
+#define PPMU_ENABLE_COUNT1 BIT(1)
+#define PPMU_ENABLE_COUNT2 BIT(2)
+#define PPMU_ENABLE_COUNT3 BIT(3)
+#define PPMU_ENABLE_CYCLE BIT(31)
+
+#define PPMU_CNTENS 0x10
+#define PPMU_FLAG 0x50
+#define PPMU_CCNT_OVERFLOW BIT(31)
+#define PPMU_CCNT 0x100
+
+#define PPMU_PMCNT0 0x110
+#define PPMU_PMCNT_OFFSET 0x10
+#define PMCNT_OFFSET(x) (PPMU_PMCNT0 + (PPMU_PMCNT_OFFSET * x))
+
+#define PPMU_BEVT0SEL 0x1000
+#define PPMU_BEVTSEL_OFFSET 0x100
+#define PPMU_BEVTSEL(x) (PPMU_BEVT0SEL + (ch * PPMU_BEVTSEL_OFFSET))
+
+/* For Event Selection */
+#define RD_DATA_COUNT 0x5
+#define WR_DATA_COUNT 0x6
+#define RDWR_DATA_COUNT 0x7
+
+enum ppmu_counter {
+ PPMU_PMNCNT0,
+ PPMU_PMCCNT1,
+ PPMU_PMNCNT2,
+ PPMU_PMNCNT3,
+ PPMU_PMNCNT_MAX,
+};
+
+struct bus_opp_table {
+ unsigned int idx;
+ unsigned long clk;
+ unsigned long volt;
+};
+
+struct exynos_ppmu {
+ void __iomem *hw_base;
+ unsigned int ccnt;
+ unsigned int event[PPMU_PMNCNT_MAX];
+ unsigned int count[PPMU_PMNCNT_MAX];
+ unsigned long long ns;
+ ktime_t reset_time;
+ bool ccnt_overflow;
+ bool count_overflow[PPMU_PMNCNT_MAX];
+};
+
+void exynos_ppmu_reset(void __iomem *ppmu_base);
+void exynos_ppmu_setevent(void __iomem *ppmu_base, unsigned int ch,
+ unsigned int evt);
+void exynos_ppmu_start(void __iomem *ppmu_base);
+void exynos_ppmu_stop(void __iomem *ppmu_base);
+unsigned int exynos_ppmu_read(void __iomem *ppmu_base, unsigned int ch);
+#endif /* __DEVFREQ_EXYNOS_PPMU_H */
return -EAGAIN;
}
- return pm_schedule_suspend(dev, 0);
+ return 0;
}
/******************************************************************************
static int lnw_gpio_runtime_idle(struct device *dev)
{
- int err = pm_schedule_suspend(dev, 500);
-
- if (!err)
- return 0;
-
+ pm_schedule_suspend(dev, 500);
return -EBUSY;
}
SET_RUNTIME_PM_OPS(
pm_generic_runtime_suspend,
pm_generic_runtime_resume,
- pm_generic_runtime_idle
+ NULL
)
};
return ret;
}
-static int ab8500_gpadc_runtime_idle(struct device *dev)
-{
- pm_runtime_suspend(dev);
- return 0;
-}
-
static int ab8500_gpadc_suspend(struct device *dev)
{
struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
static const struct dev_pm_ops ab8500_gpadc_pm_ops = {
SET_RUNTIME_PM_OPS(ab8500_gpadc_runtime_suspend,
ab8500_gpadc_runtime_resume,
- ab8500_gpadc_runtime_idle)
+ NULL)
SET_SYSTEM_SLEEP_PM_OPS(ab8500_gpadc_suspend,
ab8500_gpadc_resume)
static int mmc_runtime_idle(struct device *dev)
{
- return pm_runtime_suspend(dev);
+ return 0;
}
#endif /* !CONFIG_PM_RUNTIME */
SET_RUNTIME_PM_OPS(
pm_generic_runtime_suspend,
pm_generic_runtime_resume,
- pm_generic_runtime_idle
+ NULL
)
};
static void handle_hotplug_event_bridge (acpi_handle, u32, void *);
static void acpiphp_sanitize_bus(struct pci_bus *bus);
static void acpiphp_set_hpp_values(struct pci_bus *bus);
+static void hotplug_event_func(acpi_handle handle, u32 type, void *context);
static void handle_hotplug_event_func(acpi_handle handle, u32 type, void *context);
static void free_bridge(struct kref *kref);
static const struct acpi_dock_ops acpiphp_dock_ops = {
- .handler = handle_hotplug_event_func,
+ .handler = hotplug_event_func,
};
/* Check whether the PCI device is managed by native PCIe hotplug driver */
return true;
}
+static void acpiphp_dock_init(void *data)
+{
+ struct acpiphp_func *func = data;
+
+ get_bridge(func->slot->bridge);
+}
+
+static void acpiphp_dock_release(void *data)
+{
+ struct acpiphp_func *func = data;
+
+ put_bridge(func->slot->bridge);
+}
+
/* callback routine to register each ACPI PCI slot object */
static acpi_status
register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
*/
newfunc->flags &= ~FUNC_HAS_EJ0;
if (register_hotplug_dock_device(handle,
- &acpiphp_dock_ops, newfunc))
+ &acpiphp_dock_ops, newfunc,
+ acpiphp_dock_init, acpiphp_dock_release))
dbg("failed to register dock device\n");
/* we need to be notified when dock events happen
struct pci_bus *bus = slot->bridge->pci_bus;
struct acpiphp_func *func;
int num, max, pass;
+ LIST_HEAD(add_list);
if (slot->flags & SLOT_ENABLED)
goto err_exit;
max = pci_scan_bridge(bus, dev, max, pass);
if (pass && dev->subordinate) {
check_hotplug_bridge(slot, dev);
- pci_bus_size_bridges(dev->subordinate);
+ pcibios_resource_survey_bus(dev->subordinate);
+ __pci_bus_size_bridges(dev->subordinate,
+ &add_list);
}
}
}
}
- pci_bus_assign_resources(bus);
+ __pci_bus_assign_resources(bus, &add_list, NULL);
acpiphp_sanitize_bus(bus);
acpiphp_set_hpp_values(bus);
acpiphp_set_acpi_region(slot);
alloc_acpi_hp_work(handle, type, context, _handle_hotplug_event_bridge);
}
-static void _handle_hotplug_event_func(struct work_struct *work)
+static void hotplug_event_func(acpi_handle handle, u32 type, void *context)
{
- struct acpiphp_func *func;
+ struct acpiphp_func *func = context;
char objname[64];
struct acpi_buffer buffer = { .length = sizeof(objname),
.pointer = objname };
- struct acpi_hp_work *hp_work;
- acpi_handle handle;
- u32 type;
-
- hp_work = container_of(work, struct acpi_hp_work, work);
- handle = hp_work->handle;
- type = hp_work->type;
- func = (struct acpiphp_func *)hp_work->context;
-
- acpi_scan_lock_acquire();
acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
warn("notify_handler: unknown event type 0x%x for %s\n", type, objname);
break;
}
+}
+
+static void _handle_hotplug_event_func(struct work_struct *work)
+{
+ struct acpi_hp_work *hp_work;
+ struct acpiphp_func *func;
+
+ hp_work = container_of(work, struct acpi_hp_work, work);
+ func = hp_work->context;
+ acpi_scan_lock_acquire();
+
+ hotplug_event_func(hp_work->handle, hp_work->type, func);
acpi_scan_lock_release();
kfree(hp_work); /* allocated in handle_hotplug_event_func */
{
struct pci_dev *pci_dev = to_pci_dev(dev);
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ int ret = 0;
/*
* If pci_dev->driver is not set (unbound), the device should
* always remain in D0 regardless of the runtime PM status
*/
if (!pci_dev->driver)
- goto out;
+ return 0;
if (!pm)
return -ENOSYS;
- if (pm->runtime_idle) {
- int ret = pm->runtime_idle(dev);
- if (ret)
- return ret;
- }
+ if (pm->runtime_idle)
+ ret = pm->runtime_idle(dev);
-out:
- pm_runtime_suspend(dev);
- return 0;
+ return ret;
}
#else /* !CONFIG_PM_RUNTIME */
struct resource *res, unsigned int reg);
int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type);
void pci_configure_ari(struct pci_dev *dev);
+void __ref __pci_bus_size_bridges(struct pci_bus *bus,
+ struct list_head *realloc_head);
+void __ref __pci_bus_assign_resources(const struct pci_bus *bus,
+ struct list_head *realloc_head,
+ struct list_head *fail_head);
/**
* pci_ari_enabled - query ARI forwarding status
;
}
-static void __ref __pci_bus_size_bridges(struct pci_bus *bus,
+void __ref __pci_bus_size_bridges(struct pci_bus *bus,
struct list_head *realloc_head)
{
struct pci_dev *dev;
}
EXPORT_SYMBOL(pci_bus_size_bridges);
-static void __ref __pci_bus_assign_resources(const struct pci_bus *bus,
- struct list_head *realloc_head,
- struct list_head *fail_head)
+void __ref __pci_bus_assign_resources(const struct pci_bus *bus,
+ struct list_head *realloc_head,
+ struct list_head *fail_head)
{
struct pci_bus *b;
struct pci_dev *dev;
res->start = -1;
res->end = -1;
+ if (!rule->map) {
+ res->flags |= IORESOURCE_DISABLED;
+ pnp_dbg(&dev->dev, " dma %d disabled\n", idx);
+ goto __add;
+ }
+
for (i = 0; i < 8; i++) {
if (rule->map & (1 << xtab[i])) {
res->start = res->end = xtab[i];
goto __add;
}
}
-#ifdef MAX_DMA_CHANNELS
- res->start = res->end = MAX_DMA_CHANNELS;
-#endif
- res->flags |= IORESOURCE_DISABLED;
- pnp_dbg(&dev->dev, " disable dma %d\n", idx);
+
+ pnp_dbg(&dev->dev, " couldn't assign dma %d\n", idx);
+ return -EBUSY;
__add:
pnp_add_dma_resource(dev, res->start, res->flags);
#include <linux/pm_runtime.h>
#include <linux/power/smartreflex.h>
-#define SMARTREFLEX_NAME_LEN 16
+#define DRIVER_NAME "smartreflex"
+#define SMARTREFLEX_NAME_LEN 32
#define NVALUE_NAME_LEN 40
#define SR_DISABLE_TIMEOUT 200
static int sr_late_init(struct omap_sr *sr_info)
{
struct omap_sr_data *pdata = sr_info->pdev->dev.platform_data;
- struct resource *mem;
int ret = 0;
if (sr_class->notify && sr_class->notify_flags && sr_info->irq) {
- ret = request_irq(sr_info->irq, sr_interrupt,
- 0, sr_info->name, sr_info);
+ ret = devm_request_irq(&sr_info->pdev->dev, sr_info->irq,
+ sr_interrupt, 0, sr_info->name, sr_info);
if (ret)
goto error;
disable_irq(sr_info->irq);
return ret;
error:
- iounmap(sr_info->base);
- mem = platform_get_resource(sr_info->pdev, IORESOURCE_MEM, 0);
- release_mem_region(mem->start, resource_size(mem));
list_del(&sr_info->node);
dev_err(&sr_info->pdev->dev, "%s: ERROR in registering"
"interrupt handler. Smartreflex will"
"not function as desired\n", __func__);
- kfree(sr_info);
return ret;
}
/* Public Functions */
/**
- * sr_configure_errgen() - Configures the smrtreflex to perform AVS using the
+ * sr_configure_errgen() - Configures the SmartReflex to perform AVS using the
* error generator module.
- * @voltdm: VDD pointer to which the SR module to be configured belongs to.
+ * @sr: SR module to be configured.
*
* This API is to be called from the smartreflex class driver to
* configure the error generator module inside the smartreflex module.
* SR CLASS 2 can choose between ERROR module and MINMAXAVG
* module. Returns 0 on success and error value in case of failure.
*/
-int sr_configure_errgen(struct voltagedomain *voltdm)
+int sr_configure_errgen(struct omap_sr *sr)
{
u32 sr_config, sr_errconfig, errconfig_offs;
u32 vpboundint_en, vpboundint_st;
u32 senp_en = 0, senn_en = 0;
u8 senp_shift, senn_shift;
- struct omap_sr *sr = _sr_lookup(voltdm);
- if (IS_ERR(sr)) {
- pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
- return PTR_ERR(sr);
+ if (!sr) {
+ pr_warn("%s: NULL omap_sr from %pF\n", __func__,
+ (void *)_RET_IP_);
+ return -EINVAL;
}
if (!sr->clk_length)
/**
* sr_disable_errgen() - Disables SmartReflex AVS module's errgen component
- * @voltdm: VDD pointer to which the SR module to be configured belongs to.
+ * @sr: SR module to be configured.
*
* This API is to be called from the smartreflex class driver to
* disable the error generator module inside the smartreflex module.
*
* Returns 0 on success and error value in case of failure.
*/
-int sr_disable_errgen(struct voltagedomain *voltdm)
+int sr_disable_errgen(struct omap_sr *sr)
{
u32 errconfig_offs;
u32 vpboundint_en, vpboundint_st;
- struct omap_sr *sr = _sr_lookup(voltdm);
- if (IS_ERR(sr)) {
- pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
- return PTR_ERR(sr);
+ if (!sr) {
+ pr_warn("%s: NULL omap_sr from %pF\n", __func__,
+ (void *)_RET_IP_);
+ return -EINVAL;
}
switch (sr->ip_type) {
return -EINVAL;
}
- /* Disable the interrupts of ERROR module */
- sr_modify_reg(sr, errconfig_offs, vpboundint_en | vpboundint_st, 0);
-
/* Disable the Sensor and errorgen */
sr_modify_reg(sr, SRCONFIG, SRCONFIG_SENENABLE | SRCONFIG_ERRGEN_EN, 0);
+ /*
+ * Disable the interrupts of ERROR module
+ * NOTE: modify is a read, modify,write - an implicit OCP barrier
+ * which is required is present here - sequencing is critical
+ * at this point (after errgen is disabled, vpboundint disable)
+ */
+ sr_modify_reg(sr, errconfig_offs, vpboundint_en | vpboundint_st, 0);
+
return 0;
}
/**
- * sr_configure_minmax() - Configures the smrtreflex to perform AVS using the
+ * sr_configure_minmax() - Configures the SmartReflex to perform AVS using the
* minmaxavg module.
- * @voltdm: VDD pointer to which the SR module to be configured belongs to.
+ * @sr: SR module to be configured.
*
* This API is to be called from the smartreflex class driver to
* configure the minmaxavg module inside the smartreflex module.
* SR CLASS 2 can choose between ERROR module and MINMAXAVG
* module. Returns 0 on success and error value in case of failure.
*/
-int sr_configure_minmax(struct voltagedomain *voltdm)
+int sr_configure_minmax(struct omap_sr *sr)
{
u32 sr_config, sr_avgwt;
u32 senp_en = 0, senn_en = 0;
u8 senp_shift, senn_shift;
- struct omap_sr *sr = _sr_lookup(voltdm);
- if (IS_ERR(sr)) {
- pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
- return PTR_ERR(sr);
+ if (!sr) {
+ pr_warn("%s: NULL omap_sr from %pF\n", __func__,
+ (void *)_RET_IP_);
+ return -EINVAL;
}
if (!sr->clk_length)
/**
* sr_enable() - Enables the smartreflex module.
- * @voltdm: VDD pointer to which the SR module to be configured belongs to.
+ * @sr: pointer to which the SR module to be configured belongs to.
* @volt: The voltage at which the Voltage domain associated with
* the smartreflex module is operating at.
* This is required only to program the correct Ntarget value.
* enable a smartreflex module. Returns 0 on success. Returns error
* value if the voltage passed is wrong or if ntarget value is wrong.
*/
-int sr_enable(struct voltagedomain *voltdm, unsigned long volt)
+int sr_enable(struct omap_sr *sr, unsigned long volt)
{
struct omap_volt_data *volt_data;
- struct omap_sr *sr = _sr_lookup(voltdm);
struct omap_sr_nvalue_table *nvalue_row;
int ret;
- if (IS_ERR(sr)) {
- pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
- return PTR_ERR(sr);
+ if (!sr) {
+ pr_warn("%s: NULL omap_sr from %pF\n", __func__,
+ (void *)_RET_IP_);
+ return -EINVAL;
}
volt_data = omap_voltage_get_voltdata(sr->voltdm, volt);
/**
* sr_disable() - Disables the smartreflex module.
- * @voltdm: VDD pointer to which the SR module to be configured belongs to.
+ * @sr: pointer to which the SR module to be configured belongs to.
*
* This API is to be called from the smartreflex class driver to
* disable a smartreflex module.
*/
-void sr_disable(struct voltagedomain *voltdm)
+void sr_disable(struct omap_sr *sr)
{
- struct omap_sr *sr = _sr_lookup(voltdm);
-
- if (IS_ERR(sr)) {
- pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
+ if (!sr) {
+ pr_warn("%s: NULL omap_sr from %pF\n", __func__,
+ (void *)_RET_IP_);
return;
}
struct dentry *nvalue_dir;
int i, ret = 0;
- sr_info = kzalloc(sizeof(struct omap_sr), GFP_KERNEL);
+ sr_info = devm_kzalloc(&pdev->dev, sizeof(struct omap_sr), GFP_KERNEL);
if (!sr_info) {
dev_err(&pdev->dev, "%s: unable to allocate sr_info\n",
__func__);
return -ENOMEM;
}
+ sr_info->name = devm_kzalloc(&pdev->dev,
+ SMARTREFLEX_NAME_LEN, GFP_KERNEL);
+ if (!sr_info->name) {
+ dev_err(&pdev->dev, "%s: unable to allocate SR instance name\n",
+ __func__);
+ return -ENOMEM;
+ }
+
platform_set_drvdata(pdev, sr_info);
if (!pdata) {
dev_err(&pdev->dev, "%s: platform data missing\n", __func__);
- ret = -EINVAL;
- goto err_free_devinfo;
+ return -EINVAL;
}
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!mem) {
- dev_err(&pdev->dev, "%s: no mem resource\n", __func__);
- ret = -ENODEV;
- goto err_free_devinfo;
- }
-
- mem = request_mem_region(mem->start, resource_size(mem),
- dev_name(&pdev->dev));
- if (!mem) {
- dev_err(&pdev->dev, "%s: no mem region\n", __func__);
- ret = -EBUSY;
- goto err_free_devinfo;
+ sr_info->base = devm_ioremap_resource(&pdev->dev, mem);
+ if (IS_ERR(sr_info->base)) {
+ dev_err(&pdev->dev, "%s: ioremap fail\n", __func__);
+ return PTR_ERR(sr_info->base);
}
irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
pm_runtime_enable(&pdev->dev);
pm_runtime_irq_safe(&pdev->dev);
- sr_info->name = kasprintf(GFP_KERNEL, "%s", pdata->name);
- if (!sr_info->name) {
- dev_err(&pdev->dev, "%s: Unable to alloc SR instance name\n",
- __func__);
- ret = -ENOMEM;
- goto err_release_region;
- }
+ snprintf(sr_info->name, SMARTREFLEX_NAME_LEN, "%s", pdata->name);
sr_info->pdev = pdev;
sr_info->srid = pdev->id;
sr_info->autocomp_active = false;
sr_info->ip_type = pdata->ip_type;
- sr_info->base = ioremap(mem->start, resource_size(mem));
- if (!sr_info->base) {
- dev_err(&pdev->dev, "%s: ioremap fail\n", __func__);
- ret = -ENOMEM;
- goto err_free_name;
- }
-
if (irq)
sr_info->irq = irq->start;
ret = sr_late_init(sr_info);
if (ret) {
pr_warning("%s: Error in SR late init\n", __func__);
- goto err_iounmap;
+ goto err_list_del;
}
}
ret = PTR_ERR(sr_dbg_dir);
pr_err("%s:sr debugfs dir creation failed(%d)\n",
__func__, ret);
- goto err_iounmap;
+ goto err_list_del;
}
}
err_debugfs:
debugfs_remove_recursive(sr_info->dbg_dir);
-err_iounmap:
+err_list_del:
list_del(&sr_info->node);
- iounmap(sr_info->base);
-err_free_name:
- kfree(sr_info->name);
-err_release_region:
- release_mem_region(mem->start, resource_size(mem));
-err_free_devinfo:
- kfree(sr_info);
-
return ret;
}
{
struct omap_sr_data *pdata = pdev->dev.platform_data;
struct omap_sr *sr_info;
- struct resource *mem;
if (!pdata) {
dev_err(&pdev->dev, "%s: platform data missing\n", __func__);
if (sr_info->dbg_dir)
debugfs_remove_recursive(sr_info->dbg_dir);
+ pm_runtime_disable(&pdev->dev);
list_del(&sr_info->node);
- iounmap(sr_info->base);
- kfree(sr_info->name);
- kfree(sr_info);
- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(mem->start, resource_size(mem));
-
return 0;
}
.remove = omap_sr_remove,
.shutdown = omap_sr_shutdown,
.driver = {
- .name = "smartreflex",
+ .name = DRIVER_NAME,
},
};
static int scsi_runtime_idle(struct device *dev)
{
- int err;
-
dev_dbg(dev, "scsi_runtime_idle\n");
/* Insert hooks here for targets, hosts, and transport classes */
if (sdev->request_queue->dev) {
pm_runtime_mark_last_busy(dev);
- err = pm_runtime_autosuspend(dev);
- } else {
- err = pm_runtime_suspend(dev);
+ pm_runtime_autosuspend(dev);
+ return -EBUSY;
}
- } else {
- err = pm_runtime_suspend(dev);
}
- return err;
+ return 0;
}
int scsi_autopm_get_device(struct scsi_device *sdev)
static int default_platform_runtime_idle(struct device *dev)
{
/* suspend synchronously to disable clocks immediately */
- return pm_runtime_suspend(dev);
+ return 0;
}
static struct dev_pm_domain default_pm_domain = {
SET_RUNTIME_PM_OPS(
pm_generic_runtime_suspend,
pm_generic_runtime_resume,
- pm_generic_runtime_idle
+ NULL
)
};
#include <asm/cacheflush.h>
#include <linux/fdtable.h>
#include <linux/file.h>
+#include <linux/freezer.h>
#include <linux/fs.h>
#include <linux/list.h>
#include <linux/miscdevice.h>
if (!binder_has_proc_work(proc, thread))
ret = -EAGAIN;
} else
- ret = wait_event_interruptible_exclusive(proc->wait, binder_has_proc_work(proc, thread));
+ ret = wait_event_freezable_exclusive(proc->wait, binder_has_proc_work(proc, thread));
} else {
if (non_block) {
if (!binder_has_thread_work(thread))
ret = -EAGAIN;
} else
- ret = wait_event_interruptible(thread->wait, binder_has_thread_work(thread));
+ ret = wait_event_freezable(thread->wait, binder_has_thread_work(thread));
}
binder_lock(__func__);
#ifdef CONFIG_PM_RUNTIME
static int serial_hsu_runtime_idle(struct device *dev)
{
- int err;
-
- err = pm_schedule_suspend(dev, 500);
- if (err)
- return -EBUSY;
-
- return 0;
+ pm_schedule_suspend(dev, 500);
+ return -EBUSY;
}
static int serial_hsu_runtime_suspend(struct device *dev)
*/
if (autosuspend_check(udev) == 0)
pm_runtime_autosuspend(dev);
- return 0;
+ /* Tell the core not to suspend it, though. */
+ return -EBUSY;
}
int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
#ifdef CONFIG_PM_RUNTIME
.runtime_suspend = usb_port_runtime_suspend,
.runtime_resume = usb_port_runtime_resume,
- .runtime_idle = pm_generic_runtime_idle,
#endif
};
{
int error;
- error = wait_event_freezekillable(server->response_q,
+ error = wait_event_freezekillable_unsafe(server->response_q,
midQ->mid_state != MID_REQUEST_SUBMITTED);
if (error < 0)
return -ERESTARTSYS;
#include <linux/mutex.h>
#include <linux/anon_inodes.h>
#include <linux/device.h>
+#include <linux/freezer.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/mman.h>
}
spin_unlock_irqrestore(&ep->lock, flags);
- if (!schedule_hrtimeout_range(to, slack, HRTIMER_MODE_ABS))
+ if (!freezable_schedule_hrtimeout_range(to, slack,
+ HRTIMER_MODE_ABS))
timed_out = 1;
spin_lock_irqsave(&ep->lock, flags);
{
if (fatal_signal_pending(current))
return -ERESTARTSYS;
- freezable_schedule();
+ freezable_schedule_unsafe();
return 0;
}
EXPORT_SYMBOL_GPL(nfs_wait_bit_killable);
res = rpc_call_sync(clnt, msg, flags);
if (res != -EJUKEBOX)
break;
- freezable_schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME);
+ freezable_schedule_timeout_killable_unsafe(NFS_JUKEBOX_RETRY_TIME);
res = -ERESTARTSYS;
} while (!fatal_signal_pending(current));
return res;
*timeout = NFS4_POLL_RETRY_MIN;
if (*timeout > NFS4_POLL_RETRY_MAX)
*timeout = NFS4_POLL_RETRY_MAX;
- freezable_schedule_timeout_killable(*timeout);
+ freezable_schedule_timeout_killable_unsafe(*timeout);
if (fatal_signal_pending(current))
res = -ERESTARTSYS;
*timeout <<= 1;
static unsigned long
nfs4_set_lock_task_retry(unsigned long timeout)
{
- freezable_schedule_timeout_killable(timeout);
+ freezable_schedule_timeout_killable_unsafe(timeout);
timeout <<= 1;
if (timeout > NFS4_LOCK_MAXTIMEOUT)
return NFS4_LOCK_MAXTIMEOUT;
#include <linux/rcupdate.h>
#include <linux/hrtimer.h>
#include <linux/sched/rt.h>
+#include <linux/freezer.h>
#include <asm/uaccess.h>
set_current_state(state);
if (!pwq->triggered)
- rc = schedule_hrtimeout_range(expires, slack, HRTIMER_MODE_ABS);
+ rc = freezable_schedule_hrtimeout_range(expires, slack,
+ HRTIMER_MODE_ABS);
__set_current_state(TASK_RUNNING);
/*
*
*****************************************************************************/
-#define ACPI_DEBUGGER_MAX_ARGS 8 /* Must be max method args + 1 */
-#define ACPI_DB_LINE_BUFFER_SIZE 512
+#define ACPI_DEBUGGER_MAX_ARGS ACPI_METHOD_NUM_ARGS + 4 /* Max command line arguments */
+#define ACPI_DB_LINE_BUFFER_SIZE 512
#define ACPI_DEBUGGER_COMMAND_PROMPT '-'
#define ACPI_DEBUGGER_EXECUTE_PROMPT '%'
* This is the non-debug case -- make everything go away,
* leaving no executable debug code!
*/
-#define ACPI_FUNCTION_NAME(a)
#define ACPI_DEBUG_PRINT(pl)
#define ACPI_DEBUG_PRINT_RAW(pl)
#define ACPI_DEBUG_EXEC(a)
#define ACPI_DEBUG_ONLY_MEMBERS(a)
+#define ACPI_FUNCTION_NAME(a)
#define ACPI_FUNCTION_TRACE(a)
#define ACPI_FUNCTION_TRACE_PTR(a, b)
#define ACPI_FUNCTION_TRACE_U32(a, b)
#define ACPI_FUNCTION_TRACE_STR(a, b)
-#define ACPI_FUNCTION_EXIT
-#define ACPI_FUNCTION_STATUS_EXIT(s)
-#define ACPI_FUNCTION_VALUE_EXIT(s)
#define ACPI_FUNCTION_ENTRY()
#define ACPI_DUMP_STACK_ENTRY(a)
#define ACPI_DUMP_OPERANDS(a, b, c)
#define ACPI_DUMP_ENTRY(a, b)
-#define ACPI_DUMP_TABLES(a, b)
#define ACPI_DUMP_PATHNAME(a, b, c, d)
#define ACPI_DUMP_BUFFER(a, b)
-#define ACPI_DEBUG_PRINT(pl)
-#define ACPI_DEBUG_PRINT_RAW(pl)
#define ACPI_IS_DEBUG_ENABLED(level, component) 0
/* Return macros must have a return statement at the minimum */
#define ACPI_BUS_FILE_ROOT "acpi"
extern struct proc_dir_entry *acpi_root_dir;
-enum acpi_bus_removal_type {
- ACPI_BUS_REMOVAL_NORMAL = 0,
- ACPI_BUS_REMOVAL_EJECT,
- ACPI_BUS_REMOVAL_SUPRISE,
- ACPI_BUS_REMOVAL_TYPE_COUNT
-};
-
enum acpi_bus_device_type {
ACPI_BUS_TYPE_DEVICE = 0,
ACPI_BUS_TYPE_POWER,
u32 dynamic_status:1;
u32 removable:1;
u32 ejectable:1;
- u32 suprise_removal_ok:1;
u32 power_manageable:1;
- u32 performance_manageable:1;
u32 eject_pending:1;
u32 match_driver:1;
- u32 reserved:24;
+ u32 reserved:26;
};
/* File System */
u8 node_id;
struct list_head node;
struct device *dev;
+ bool put_online:1;
};
/* set maximum of physical nodes to 32 for expansibility */
struct acpi_driver *driver;
void *driver_data;
struct device dev;
- enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
u8 physical_node_count;
struct list_head physical_node_list;
struct mutex physical_node_lock;
acpi_notify_handler handler, void *context);
acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
acpi_notify_handler handler);
-int acpi_device_power_state(struct device *dev, struct acpi_device *adev,
- u32 target_state, int d_max_in, int *d_min_p);
int acpi_pm_device_sleep_state(struct device *, int *, int);
void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev);
void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev);
{
return AE_SUPPORT;
}
-static inline int __acpi_device_power_state(int m, int *p)
+static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
{
if (p)
*p = ACPI_STATE_D0;
+
return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3) ? m : ACPI_STATE_D0;
}
-static inline int acpi_device_power_state(struct device *dev,
- struct acpi_device *adev,
- u32 target_state, int d_max_in,
- int *d_min_p)
-{
- return __acpi_device_power_state(d_max_in, d_min_p);
-}
-static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
-{
- return __acpi_device_power_state(m, p);
-}
static inline void acpi_dev_pm_add_dependent(acpi_handle handle,
struct device *depdev) {}
static inline void acpi_dev_pm_remove_dependent(acpi_handle handle,
extern void unregister_dock_notifier(struct notifier_block *nb);
extern int register_hotplug_dock_device(acpi_handle handle,
const struct acpi_dock_ops *ops,
- void *context);
+ void *context,
+ void (*init)(void *),
+ void (*release)(void *));
extern void unregister_hotplug_dock_device(acpi_handle handle);
#else
static inline int is_dock_device(acpi_handle handle)
}
static inline int register_hotplug_dock_device(acpi_handle handle,
const struct acpi_dock_ops *ops,
- void *context)
+ void *context,
+ void (*init)(void *),
+ void (*release)(void *))
{
return -ENODEV;
}
/* Current ACPICA subsystem version in YYYYMMDD format */
-#define ACPI_CA_VERSION 0x20130328
+#define ACPI_CA_VERSION 0x20130517
#include <acpi/acconfig.h>
#include <acpi/actypes.h>
extern u8 acpi_gbl_copy_dsdt_locally;
extern u8 acpi_gbl_truncate_io_addresses;
extern u8 acpi_gbl_disable_auto_repair;
+extern u8 acpi_gbl_disable_ssdt_table_load;
/*
* Hardware-reduced prototypes. All interfaces that use these macros will
#include <linux/thermal.h>
#include <asm/acpi.h>
+#define ACPI_PROCESSOR_CLASS "processor"
+#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
+#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
+
#define ACPI_PROCESSOR_BUSY_METRIC 10
#define ACPI_PROCESSOR_MAX_POWER 8
struct acpi_processor_throttling throttling;
struct acpi_processor_limit limit;
struct thermal_cooling_device *cdev;
+ struct device *dev; /* Processor device. */
};
struct acpi_processor_errata {
/* Enable _OST when all relevant hotplug operations are enabled */
#if defined(CONFIG_ACPI_HOTPLUG_CPU) && \
- (defined(CONFIG_ACPI_HOTPLUG_MEMORY) || \
- defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)) && \
+ defined(CONFIG_ACPI_HOTPLUG_MEMORY) && \
defined(CONFIG_ACPI_CONTAINER)
#define ACPI_HOTPLUG_OST
#endif
struct cpuidle_state states[CPUIDLE_STATE_MAX];
int state_count;
int safe_state_index;
+
+ /* the driver handles the cpus in cpumask */
+ struct cpumask *cpumask;
};
#ifdef CONFIG_CPU_IDLE
extern int cpuidle_play_dead(void);
extern struct cpuidle_driver *cpuidle_get_cpu_driver(struct cpuidle_device *dev);
-extern int cpuidle_register_cpu_driver(struct cpuidle_driver *drv, int cpu);
-extern void cpuidle_unregister_cpu_driver(struct cpuidle_driver *drv, int cpu);
-
#else
static inline void disable_cpuidle(void) { }
static inline int cpuidle_idle_call(void) { return -ENODEV; }
extern void debug_show_all_locks(void);
extern void debug_show_held_locks(struct task_struct *task);
extern void debug_check_no_locks_freed(const void *from, unsigned long len);
-extern void debug_check_no_locks_held(struct task_struct *task);
+extern void debug_check_no_locks_held(void);
#else
static inline void debug_show_all_locks(void)
{
}
static inline void
-debug_check_no_locks_held(struct task_struct *task)
+debug_check_no_locks_held(void)
{
}
#endif
const char *governor_name,
void *data);
extern int devfreq_remove_device(struct devfreq *devfreq);
+
+/* Supposed to be called by PM_SLEEP/PM_RUNTIME callbacks */
extern int devfreq_suspend_device(struct devfreq *devfreq);
extern int devfreq_resume_device(struct devfreq *devfreq);
* the specific driver's probe to initial the matched device.
* @remove: Called when a device removed from this bus.
* @shutdown: Called at shut-down time to quiesce the device.
+ *
+ * @online: Called to put the device back online (after offlining it).
+ * @offline: Called to put the device offline for hot-removal. May fail.
+ *
* @suspend: Called when a device on this bus wants to go to sleep mode.
* @resume: Called to bring a device on this bus out of sleep mode.
* @pm: Power management operations of this bus, callback the specific
int (*remove)(struct device *dev);
void (*shutdown)(struct device *dev);
+ int (*online)(struct device *dev);
+ int (*offline)(struct device *dev);
+
int (*suspend)(struct device *dev, pm_message_t state);
int (*resume)(struct device *dev);
* @release: Callback to free the device after all references have
* gone away. This should be set by the allocator of the
* device (i.e. the bus driver that discovered the device).
+ * @offline_disabled: If set, the device is permanently online.
+ * @offline: Set after successful invocation of bus type's .offline().
*
* At the lowest level, every device in a Linux system is represented by an
* instance of struct device. The device structure contains the information
void (*release)(struct device *dev);
struct iommu_group *iommu_group;
+
+ bool offline_disabled:1;
+ bool offline:1;
};
static inline struct device *kobj_to_dev(struct kobject *kobj)
extern void *dev_get_drvdata(const struct device *dev);
extern int dev_set_drvdata(struct device *dev, void *data);
+static inline bool device_supports_offline(struct device *dev)
+{
+ return dev->bus && dev->bus->offline && dev->bus->online;
+}
+
+extern void lock_device_hotplug(void);
+extern void unlock_device_hotplug(void);
+extern int device_offline(struct device *dev);
+extern int device_online(struct device *dev);
/*
* Root device objects for grouping under /sys/devices
*/
#ifndef FREEZER_H_INCLUDED
#define FREEZER_H_INCLUDED
+#include <linux/debug_locks.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/atomic.h>
extern void thaw_processes(void);
extern void thaw_kernel_threads(void);
-static inline bool try_to_freeze(void)
+/*
+ * DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION
+ * If try_to_freeze causes a lockdep warning it means the caller may deadlock
+ */
+static inline bool try_to_freeze_unsafe(void)
{
might_sleep();
if (likely(!freezing(current)))
return __refrigerator(false);
}
+static inline bool try_to_freeze(void)
+{
+ if (!(current->flags & PF_NOFREEZE))
+ debug_check_no_locks_held();
+ return try_to_freeze_unsafe();
+}
+
extern bool freeze_task(struct task_struct *p);
extern bool set_freezable(void);
try_to_freeze();
}
+/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
+static inline void freezer_count_unsafe(void)
+{
+ current->flags &= ~PF_FREEZER_SKIP;
+ smp_mb();
+ try_to_freeze_unsafe();
+}
+
/**
* freezer_should_skip - whether to skip a task when determining frozen
* state is reached
}
/*
- * These macros are intended to be used whenever you want allow a sleeping
+ * These functions are intended to be used whenever you want allow a sleeping
* task to be frozen. Note that neither return any clear indication of
* whether a freeze event happened while in this function.
*/
/* Like schedule(), but should not block the freezer. */
-#define freezable_schedule() \
-({ \
- freezer_do_not_count(); \
- schedule(); \
- freezer_count(); \
-})
+static inline void freezable_schedule(void)
+{
+ freezer_do_not_count();
+ schedule();
+ freezer_count();
+}
+
+/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
+static inline void freezable_schedule_unsafe(void)
+{
+ freezer_do_not_count();
+ schedule();
+ freezer_count_unsafe();
+}
+
+/*
+ * Like freezable_schedule_timeout(), but should not block the freezer. Do not
+ * call this with locks held.
+ */
+static inline long freezable_schedule_timeout(long timeout)
+{
+ long __retval;
+ freezer_do_not_count();
+ __retval = schedule_timeout(timeout);
+ freezer_count();
+ return __retval;
+}
+
+/*
+ * Like schedule_timeout_interruptible(), but should not block the freezer. Do not
+ * call this with locks held.
+ */
+static inline long freezable_schedule_timeout_interruptible(long timeout)
+{
+ long __retval;
+ freezer_do_not_count();
+ __retval = schedule_timeout_interruptible(timeout);
+ freezer_count();
+ return __retval;
+}
/* Like schedule_timeout_killable(), but should not block the freezer. */
-#define freezable_schedule_timeout_killable(timeout) \
-({ \
- long __retval; \
- freezer_do_not_count(); \
- __retval = schedule_timeout_killable(timeout); \
- freezer_count(); \
- __retval; \
-})
+static inline long freezable_schedule_timeout_killable(long timeout)
+{
+ long __retval;
+ freezer_do_not_count();
+ __retval = schedule_timeout_killable(timeout);
+ freezer_count();
+ return __retval;
+}
+
+/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
+static inline long freezable_schedule_timeout_killable_unsafe(long timeout)
+{
+ long __retval;
+ freezer_do_not_count();
+ __retval = schedule_timeout_killable(timeout);
+ freezer_count_unsafe();
+ return __retval;
+}
+
+/*
+ * Like schedule_hrtimeout_range(), but should not block the freezer. Do not
+ * call this with locks held.
+ */
+static inline int freezable_schedule_hrtimeout_range(ktime_t *expires,
+ unsigned long delta, const enum hrtimer_mode mode)
+{
+ int __retval;
+ freezer_do_not_count();
+ __retval = schedule_hrtimeout_range(expires, delta, mode);
+ freezer_count();
+ return __retval;
+}
/*
* Freezer-friendly wrappers around wait_event_interruptible(),
__retval; \
})
+/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
+#define wait_event_freezekillable_unsafe(wq, condition) \
+({ \
+ int __retval; \
+ freezer_do_not_count(); \
+ __retval = wait_event_killable(wq, (condition)); \
+ freezer_count_unsafe(); \
+ __retval; \
+})
+
#define wait_event_freezable(wq, condition) \
({ \
int __retval; \
- for (;;) { \
- __retval = wait_event_interruptible(wq, \
- (condition) || freezing(current)); \
- if (__retval || (condition)) \
- break; \
- try_to_freeze(); \
- } \
+ freezer_do_not_count(); \
+ __retval = wait_event_interruptible(wq, (condition)); \
+ freezer_count(); \
__retval; \
})
#define wait_event_freezable_timeout(wq, condition, timeout) \
({ \
long __retval = timeout; \
- for (;;) { \
- __retval = wait_event_interruptible_timeout(wq, \
- (condition) || freezing(current), \
- __retval); \
- if (__retval <= 0 || (condition)) \
- break; \
- try_to_freeze(); \
- } \
+ freezer_do_not_count(); \
+ __retval = wait_event_interruptible_timeout(wq, (condition), \
+ __retval); \
+ freezer_count(); \
__retval; \
})
+#define wait_event_freezable_exclusive(wq, condition) \
+({ \
+ int __retval; \
+ freezer_do_not_count(); \
+ __retval = wait_event_interruptible_exclusive(wq, condition); \
+ freezer_count(); \
+ __retval; \
+})
+
+
#else /* !CONFIG_FREEZER */
static inline bool frozen(struct task_struct *p) { return false; }
static inline bool freezing(struct task_struct *p) { return false; }
#define freezable_schedule() schedule()
+#define freezable_schedule_unsafe() schedule()
+
+#define freezable_schedule_timeout(timeout) schedule_timeout(timeout)
+
+#define freezable_schedule_timeout_interruptible(timeout) \
+ schedule_timeout_interruptible(timeout)
+
#define freezable_schedule_timeout_killable(timeout) \
schedule_timeout_killable(timeout)
+#define freezable_schedule_timeout_killable_unsafe(timeout) \
+ schedule_timeout_killable(timeout)
+
+#define freezable_schedule_hrtimeout_range(expires, delta, mode) \
+ schedule_hrtimeout_range(expires, delta, mode)
+
#define wait_event_freezable(wq, condition) \
wait_event_interruptible(wq, condition)
#define wait_event_freezable_timeout(wq, condition, timeout) \
wait_event_interruptible_timeout(wq, condition, timeout)
+#define wait_event_freezable_exclusive(wq, condition) \
+ wait_event_interruptible_exclusive(wq, condition)
+
#define wait_event_freezekillable(wq, condition) \
wait_event_killable(wq, condition)
+#define wait_event_freezekillable_unsafe(wq, condition) \
+ wait_event_killable(wq, condition)
+
#endif /* !CONFIG_FREEZER */
#endif /* FREEZER_H_INCLUDED */
extern int is_mem_section_removable(unsigned long pfn, unsigned long nr_pages);
extern void try_offline_node(int nid);
+extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
+extern void remove_memory(int nid, u64 start, u64 size);
#else
static inline int is_mem_section_removable(unsigned long pfn,
}
static inline void try_offline_node(int nid) {}
+
+static inline int offline_pages(unsigned long start_pfn, unsigned long nr_pages)
+{
+ return -EINVAL;
+}
+
+static inline void remove_memory(int nid, u64 start, u64 size) {}
#endif /* CONFIG_MEMORY_HOTREMOVE */
+extern int walk_memory_range(unsigned long start_pfn, unsigned long end_pfn,
+ void *arg, int (*func)(struct memory_block *, void *));
extern int mem_online_node(int nid);
extern int add_memory(int nid, u64 start, u64 size);
extern int arch_add_memory(int nid, u64 start, u64 size);
extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
-extern int offline_memory_block(struct memory_block *mem);
extern bool is_memblock_offlined(struct memory_block *mem);
-extern int remove_memory(int nid, u64 start, u64 size);
+extern void remove_memory(int nid, u64 start, u64 size);
extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn,
int nr_pages);
extern void sparse_remove_one_section(struct zone *zone, struct mem_section *ms);
extern void __pm_runtime_disable(struct device *dev, bool check_resume);
extern void pm_runtime_allow(struct device *dev);
extern void pm_runtime_forbid(struct device *dev);
-extern int pm_generic_runtime_idle(struct device *dev);
extern int pm_generic_runtime_suspend(struct device *dev);
extern int pm_generic_runtime_resume(struct device *dev);
extern void pm_runtime_no_callbacks(struct device *dev);
static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }
static inline bool pm_runtime_enabled(struct device *dev) { return false; }
-static inline int pm_generic_runtime_idle(struct device *dev) { return 0; }
static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
static inline void pm_runtime_no_callbacks(struct device *dev) {}
void omap_sr_register_pmic(struct omap_sr_pmic_data *pmic_data);
/* Smartreflex driver hooks to be called from Smartreflex class driver */
-int sr_enable(struct voltagedomain *voltdm, unsigned long volt);
-void sr_disable(struct voltagedomain *voltdm);
-int sr_configure_errgen(struct voltagedomain *voltdm);
-int sr_disable_errgen(struct voltagedomain *voltdm);
-int sr_configure_minmax(struct voltagedomain *voltdm);
+int sr_enable(struct omap_sr *sr, unsigned long volt);
+void sr_disable(struct omap_sr *sr);
+int sr_configure_errgen(struct omap_sr *sr);
+int sr_disable_errgen(struct omap_sr *sr);
+int sr_configure_minmax(struct omap_sr *sr);
/* API to register the smartreflex class driver with the smartreflex driver */
int sr_register_class(struct omap_sr_class_data *class_data);
extern bool pm_get_wakeup_count(unsigned int *count, bool block);
extern bool pm_save_wakeup_count(unsigned int count);
extern void pm_wakep_autosleep_enabled(bool set);
+extern void pm_print_active_wakeup_sources(void);
static inline void lock_system_sleep(void)
{
#define _TRACE_POWER_H
#include <linux/ktime.h>
+#include <linux/pm_qos.h>
#include <linux/tracepoint.h>
DECLARE_EVENT_CLASS(cpu,
TP_ARGS(name, state, cpu_id)
);
+
+/*
+ * The pm qos events are used for pm qos update
+ */
+DECLARE_EVENT_CLASS(pm_qos_request,
+
+ TP_PROTO(int pm_qos_class, s32 value),
+
+ TP_ARGS(pm_qos_class, value),
+
+ TP_STRUCT__entry(
+ __field( int, pm_qos_class )
+ __field( s32, value )
+ ),
+
+ TP_fast_assign(
+ __entry->pm_qos_class = pm_qos_class;
+ __entry->value = value;
+ ),
+
+ TP_printk("pm_qos_class=%s value=%d",
+ __print_symbolic(__entry->pm_qos_class,
+ { PM_QOS_CPU_DMA_LATENCY, "CPU_DMA_LATENCY" },
+ { PM_QOS_NETWORK_LATENCY, "NETWORK_LATENCY" },
+ { PM_QOS_NETWORK_THROUGHPUT, "NETWORK_THROUGHPUT" }),
+ __entry->value)
+);
+
+DEFINE_EVENT(pm_qos_request, pm_qos_add_request,
+
+ TP_PROTO(int pm_qos_class, s32 value),
+
+ TP_ARGS(pm_qos_class, value)
+);
+
+DEFINE_EVENT(pm_qos_request, pm_qos_update_request,
+
+ TP_PROTO(int pm_qos_class, s32 value),
+
+ TP_ARGS(pm_qos_class, value)
+);
+
+DEFINE_EVENT(pm_qos_request, pm_qos_remove_request,
+
+ TP_PROTO(int pm_qos_class, s32 value),
+
+ TP_ARGS(pm_qos_class, value)
+);
+
+TRACE_EVENT(pm_qos_update_request_timeout,
+
+ TP_PROTO(int pm_qos_class, s32 value, unsigned long timeout_us),
+
+ TP_ARGS(pm_qos_class, value, timeout_us),
+
+ TP_STRUCT__entry(
+ __field( int, pm_qos_class )
+ __field( s32, value )
+ __field( unsigned long, timeout_us )
+ ),
+
+ TP_fast_assign(
+ __entry->pm_qos_class = pm_qos_class;
+ __entry->value = value;
+ __entry->timeout_us = timeout_us;
+ ),
+
+ TP_printk("pm_qos_class=%s value=%d, timeout_us=%ld",
+ __print_symbolic(__entry->pm_qos_class,
+ { PM_QOS_CPU_DMA_LATENCY, "CPU_DMA_LATENCY" },
+ { PM_QOS_NETWORK_LATENCY, "NETWORK_LATENCY" },
+ { PM_QOS_NETWORK_THROUGHPUT, "NETWORK_THROUGHPUT" }),
+ __entry->value, __entry->timeout_us)
+);
+
+DECLARE_EVENT_CLASS(pm_qos_update,
+
+ TP_PROTO(enum pm_qos_req_action action, int prev_value, int curr_value),
+
+ TP_ARGS(action, prev_value, curr_value),
+
+ TP_STRUCT__entry(
+ __field( enum pm_qos_req_action, action )
+ __field( int, prev_value )
+ __field( int, curr_value )
+ ),
+
+ TP_fast_assign(
+ __entry->action = action;
+ __entry->prev_value = prev_value;
+ __entry->curr_value = curr_value;
+ ),
+
+ TP_printk("action=%s prev_value=%d curr_value=%d",
+ __print_symbolic(__entry->action,
+ { PM_QOS_ADD_REQ, "ADD_REQ" },
+ { PM_QOS_UPDATE_REQ, "UPDATE_REQ" },
+ { PM_QOS_REMOVE_REQ, "REMOVE_REQ" }),
+ __entry->prev_value, __entry->curr_value)
+);
+
+DEFINE_EVENT(pm_qos_update, pm_qos_update_target,
+
+ TP_PROTO(enum pm_qos_req_action action, int prev_value, int curr_value),
+
+ TP_ARGS(action, prev_value, curr_value)
+);
+
+DEFINE_EVENT_PRINT(pm_qos_update, pm_qos_update_flags,
+
+ TP_PROTO(enum pm_qos_req_action action, int prev_value, int curr_value),
+
+ TP_ARGS(action, prev_value, curr_value),
+
+ TP_printk("action=%s prev_value=0x%x curr_value=0x%x",
+ __print_symbolic(__entry->action,
+ { PM_QOS_ADD_REQ, "ADD_REQ" },
+ { PM_QOS_UPDATE_REQ, "UPDATE_REQ" },
+ { PM_QOS_REMOVE_REQ, "REMOVE_REQ" }),
+ __entry->prev_value, __entry->curr_value)
+);
+
+DECLARE_EVENT_CLASS(dev_pm_qos_request,
+
+ TP_PROTO(const char *name, enum dev_pm_qos_req_type type,
+ s32 new_value),
+
+ TP_ARGS(name, type, new_value),
+
+ TP_STRUCT__entry(
+ __string( name, name )
+ __field( enum dev_pm_qos_req_type, type )
+ __field( s32, new_value )
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, name);
+ __entry->type = type;
+ __entry->new_value = new_value;
+ ),
+
+ TP_printk("device=%s type=%s new_value=%d",
+ __get_str(name),
+ __print_symbolic(__entry->type,
+ { DEV_PM_QOS_LATENCY, "DEV_PM_QOS_LATENCY" },
+ { DEV_PM_QOS_FLAGS, "DEV_PM_QOS_FLAGS" }),
+ __entry->new_value)
+);
+
+DEFINE_EVENT(dev_pm_qos_request, dev_pm_qos_add_request,
+
+ TP_PROTO(const char *name, enum dev_pm_qos_req_type type,
+ s32 new_value),
+
+ TP_ARGS(name, type, new_value)
+);
+
+DEFINE_EVENT(dev_pm_qos_request, dev_pm_qos_update_request,
+
+ TP_PROTO(const char *name, enum dev_pm_qos_req_type type,
+ s32 new_value),
+
+ TP_ARGS(name, type, new_value)
+);
+
+DEFINE_EVENT(dev_pm_qos_request, dev_pm_qos_remove_request,
+
+ TP_PROTO(const char *name, enum dev_pm_qos_req_type type,
+ s32 new_value),
+
+ TP_ARGS(name, type, new_value)
+);
#endif /* _TRACE_POWER_H */
/* This part must be outside protection */
int xen_acpi_notify_hypervisor_state(u8 sleep_state,
u32 pm1a_cnt, u32 pm1b_cnd);
+static inline int xen_acpi_suspend_lowlevel(void)
+{
+ /*
+ * Xen will save and restore CPU context, so
+ * we can skip that and just go straight to
+ * the suspend.
+ */
+ acpi_enter_sleep_state(ACPI_STATE_S3);
+ return 0;
+}
+
static inline void xen_acpi_sleep_register(void)
{
- if (xen_initial_domain())
+ if (xen_initial_domain()) {
acpi_os_set_prepare_sleep(
&xen_acpi_notify_hypervisor_state);
+
+ acpi_suspend_lowlevel = xen_acpi_suspend_lowlevel;
+ }
}
#else
static inline void xen_acpi_sleep_register(void)
/*
* Make sure we are holding no locks:
*/
- debug_check_no_locks_held(tsk);
+ debug_check_no_locks_held();
/*
* We can do this unlocked here. The futex code uses this flag
* just to verify whether the pi state cleanup has been done
{
unsigned long flags;
+ /*
+ * This check can race with freezer_do_not_count, but worst case that
+ * will result in an extra wakeup being sent to the task. It does not
+ * race with freezer_count(), the barriers in freezer_count() and
+ * freezer_should_skip() ensure that either freezer_count() sees
+ * freezing == true in try_to_freeze() and freezes, or
+ * freezer_should_skip() sees !PF_FREEZE_SKIP and freezes the task
+ * normally.
+ */
+ if (freezer_should_skip(p))
+ return false;
+
spin_lock_irqsave(&freezer_lock, flags);
if (!freezing(p) || frozen(p)) {
spin_unlock_irqrestore(&freezer_lock, flags);
#include <linux/nsproxy.h>
#include <linux/ptrace.h>
#include <linux/sched/rt.h>
+#include <linux/freezer.h>
#include <asm/futex.h>
* is no timeout, or if it has yet to expire.
*/
if (!timeout || timeout->task)
- schedule();
+ freezable_schedule();
}
__set_current_state(TASK_RUNNING);
}
#include <linux/sched/sysctl.h>
#include <linux/sched/rt.h>
#include <linux/timer.h>
+#include <linux/freezer.h>
#include <asm/uaccess.h>
t->task = NULL;
if (likely(t->task))
- schedule();
+ freezable_schedule();
hrtimer_cancel(&t->timer);
mode = HRTIMER_MODE_ABS;
}
EXPORT_SYMBOL_GPL(debug_check_no_locks_freed);
-static void print_held_locks_bug(struct task_struct *curr)
+static void print_held_locks_bug(void)
{
if (!debug_locks_off())
return;
printk("\n");
printk("=====================================\n");
- printk("[ BUG: lock held at task exit time! ]\n");
+ printk("[ BUG: %s/%d still has locks held! ]\n",
+ current->comm, task_pid_nr(current));
print_kernel_ident();
printk("-------------------------------------\n");
- printk("%s/%d is exiting with locks still held!\n",
- curr->comm, task_pid_nr(curr));
- lockdep_print_held_locks(curr);
-
+ lockdep_print_held_locks(current);
printk("\nstack backtrace:\n");
dump_stack();
}
-void debug_check_no_locks_held(struct task_struct *task)
+void debug_check_no_locks_held(void)
{
- if (unlikely(task->lockdep_depth > 0))
- print_held_locks_bug(task);
+ if (unlikely(current->lockdep_depth > 0))
+ print_held_locks_bug();
}
+EXPORT_SYMBOL_GPL(debug_check_no_locks_held);
void debug_show_all_locks(void)
{
if (sscanf(buf, "%u", &val) == 1) {
if (pm_save_wakeup_count(val))
error = n;
+ else
+ pm_print_active_wakeup_sources();
}
out:
if (sscanf(buf, "%d", &val) == 1) {
pm_trace_enabled = !!val;
+ if (pm_trace_enabled) {
+ pr_warn("PM: Enabling pm_trace changes system date and time during resume.\n"
+ "PM: Correct system time has to be restored manually after resume.\n");
+ }
return n;
}
return -EINVAL;
unsigned int todo;
bool wq_busy = false;
struct timeval start, end;
- u64 elapsed_csecs64;
- unsigned int elapsed_csecs;
+ u64 elapsed_msecs64;
+ unsigned int elapsed_msecs;
bool wakeup = false;
+ int sleep_usecs = USEC_PER_MSEC;
do_gettimeofday(&start);
/*
* We need to retry, but first give the freezing tasks some
- * time to enter the refrigerator.
+ * time to enter the refrigerator. Start with an initial
+ * 1 ms sleep followed by exponential backoff until 8 ms.
*/
- msleep(10);
+ usleep_range(sleep_usecs / 2, sleep_usecs);
+ if (sleep_usecs < 8 * USEC_PER_MSEC)
+ sleep_usecs *= 2;
}
do_gettimeofday(&end);
- elapsed_csecs64 = timeval_to_ns(&end) - timeval_to_ns(&start);
- do_div(elapsed_csecs64, NSEC_PER_SEC / 100);
- elapsed_csecs = elapsed_csecs64;
+ elapsed_msecs64 = timeval_to_ns(&end) - timeval_to_ns(&start);
+ do_div(elapsed_msecs64, NSEC_PER_MSEC);
+ elapsed_msecs = elapsed_msecs64;
if (todo) {
printk("\n");
- printk(KERN_ERR "Freezing of tasks %s after %d.%02d seconds "
+ printk(KERN_ERR "Freezing of tasks %s after %d.%03d seconds "
"(%d tasks refusing to freeze, wq_busy=%d):\n",
wakeup ? "aborted" : "failed",
- elapsed_csecs / 100, elapsed_csecs % 100,
+ elapsed_msecs / 1000, elapsed_msecs % 1000,
todo - wq_busy, wq_busy);
if (!wakeup) {
read_unlock(&tasklist_lock);
}
} else {
- printk("(elapsed %d.%02d seconds) ", elapsed_csecs / 100,
- elapsed_csecs % 100);
+ printk("(elapsed %d.%03d seconds) ", elapsed_msecs / 1000,
+ elapsed_msecs % 1000);
}
return todo ? -EBUSY : 0;
#include <linux/uaccess.h>
#include <linux/export.h>
+#include <trace/events/power.h>
/*
* locking rule: all changes to constraints or notifiers lists
spin_unlock_irqrestore(&pm_qos_lock, flags);
+ trace_pm_qos_update_target(action, prev_value, curr_value);
if (prev_value != curr_value) {
blocking_notifier_call_chain(c->notifiers,
(unsigned long)curr_value,
spin_unlock_irqrestore(&pm_qos_lock, irqflags);
+ trace_pm_qos_update_flags(action, prev_value, curr_value);
return prev_value != curr_value;
}
}
req->pm_qos_class = pm_qos_class;
INIT_DELAYED_WORK(&req->work, pm_qos_work_fn);
+ trace_pm_qos_add_request(pm_qos_class, value);
pm_qos_update_target(pm_qos_array[pm_qos_class]->constraints,
&req->node, PM_QOS_ADD_REQ, value);
}
cancel_delayed_work_sync(&req->work);
+ trace_pm_qos_update_request(req->pm_qos_class, new_value);
if (new_value != req->node.prio)
pm_qos_update_target(
pm_qos_array[req->pm_qos_class]->constraints,
cancel_delayed_work_sync(&req->work);
+ trace_pm_qos_update_request_timeout(req->pm_qos_class,
+ new_value, timeout_us);
if (new_value != req->node.prio)
pm_qos_update_target(
pm_qos_array[req->pm_qos_class]->constraints,
cancel_delayed_work_sync(&req->work);
+ trace_pm_qos_remove_request(req->pm_qos_class, PM_QOS_DEFAULT_VALUE);
pm_qos_update_target(pm_qos_array[req->pm_qos_class]->constraints,
&req->node, PM_QOS_REMOVE_REQ,
PM_QOS_DEFAULT_VALUE);
{
int pm_qos_class;
- for (pm_qos_class = 0;
+ for (pm_qos_class = PM_QOS_CPU_DMA_LATENCY;
pm_qos_class < PM_QOS_NUM_CLASSES; pm_qos_class++) {
if (minor ==
pm_qos_array[pm_qos_class]->pm_qos_power_miscdev.minor)
long pm_qos_class;
pm_qos_class = find_pm_qos_object_by_minor(iminor(inode));
- if (pm_qos_class >= 0) {
+ if (pm_qos_class >= PM_QOS_CPU_DMA_LATENCY) {
struct pm_qos_request *req = kzalloc(sizeof(*req), GFP_KERNEL);
if (!req)
return -ENOMEM;
BUILD_BUG_ON(ARRAY_SIZE(pm_qos_array) != PM_QOS_NUM_CLASSES);
- for (i = 1; i < PM_QOS_NUM_CLASSES; i++) {
+ for (i = PM_QOS_CPU_DMA_LATENCY; i < PM_QOS_NUM_CLASSES; i++) {
ret = register_pm_qos_misc(pm_qos_array[i]);
if (ret < 0) {
printk(KERN_ERR "pm_qos_param: %s setup failed\n",
region->end_pfn = end_pfn;
list_add_tail(®ion->list, &nosave_regions);
Report:
- printk(KERN_INFO "PM: Registered nosave memory: %016lx - %016lx\n",
- start_pfn << PAGE_SHIFT, end_pfn << PAGE_SHIFT);
+ printk(KERN_INFO "PM: Registered nosave memory: [mem %#010llx-%#010llx]\n",
+ (unsigned long long) start_pfn << PAGE_SHIFT,
+ ((unsigned long long) end_pfn << PAGE_SHIFT) - 1);
}
/*
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
- printk(KERN_ERR "PM: Some devices failed to suspend\n");
+ pr_err("PM: Some devices failed to suspend, or early wake event detected\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
recalc_sigpending();
spin_unlock_irq(&tsk->sighand->siglock);
- timeout = schedule_timeout_interruptible(timeout);
+ timeout = freezable_schedule_timeout_interruptible(timeout);
spin_lock_irq(&tsk->sighand->siglock);
__set_task_blocked(tsk, &tsk->real_blocked);
{
return __offline_pages(start_pfn, start_pfn + nr_pages, 120 * HZ);
}
+#endif /* CONFIG_MEMORY_HOTREMOVE */
/**
* walk_memory_range - walks through all mem sections in [start_pfn, end_pfn)
*
* Returns the return value of func.
*/
-static int walk_memory_range(unsigned long start_pfn, unsigned long end_pfn,
+int walk_memory_range(unsigned long start_pfn, unsigned long end_pfn,
void *arg, int (*func)(struct memory_block *, void *))
{
struct memory_block *mem = NULL;
return 0;
}
-/**
- * offline_memory_block_cb - callback function for offlining memory block
- * @mem: the memory block to be offlined
- * @arg: buffer to hold error msg
- *
- * Always return 0, and put the error msg in arg if any.
- */
-static int offline_memory_block_cb(struct memory_block *mem, void *arg)
-{
- int *ret = arg;
- int error = offline_memory_block(mem);
-
- if (error != 0 && *ret == 0)
- *ret = error;
-
- return 0;
-}
-
+#ifdef CONFIG_MEMORY_HOTREMOVE
static int is_memblock_offlined_cb(struct memory_block *mem, void *arg)
{
int ret = !is_memblock_offlined(mem);
}
EXPORT_SYMBOL(try_offline_node);
-int __ref remove_memory(int nid, u64 start, u64 size)
+void __ref remove_memory(int nid, u64 start, u64 size)
{
- unsigned long start_pfn, end_pfn;
- int ret = 0;
- int retry = 1;
-
- start_pfn = PFN_DOWN(start);
- end_pfn = PFN_UP(start + size - 1);
-
- /*
- * When CONFIG_MEMCG is on, one memory block may be used by other
- * blocks to store page cgroup when onlining pages. But we don't know
- * in what order pages are onlined. So we iterate twice to offline
- * memory:
- * 1st iterate: offline every non primary memory block.
- * 2nd iterate: offline primary (i.e. first added) memory block.
- */
-repeat:
- walk_memory_range(start_pfn, end_pfn, &ret,
- offline_memory_block_cb);
- if (ret) {
- if (!retry)
- return ret;
-
- retry = 0;
- ret = 0;
- goto repeat;
- }
+ int ret;
lock_memory_hotplug();
/*
- * we have offlined all memory blocks like this:
- * 1. lock memory hotplug
- * 2. offline a memory block
- * 3. unlock memory hotplug
- *
- * repeat step1-3 to offline the memory block. All memory blocks
- * must be offlined before removing memory. But we don't hold the
- * lock in the whole operation. So we should check whether all
- * memory blocks are offlined.
+ * All memory blocks must be offlined before removing memory. Check
+ * whether all memory blocks in question are offline and trigger a BUG()
+ * if this is not the case.
*/
-
- ret = walk_memory_range(start_pfn, end_pfn, NULL,
+ ret = walk_memory_range(PFN_DOWN(start), PFN_UP(start + size - 1), NULL,
is_memblock_offlined_cb);
if (ret) {
unlock_memory_hotplug();
- return ret;
+ BUG();
}
/* remove memmap entry */
try_offline_node(nid);
unlock_memory_hotplug();
-
- return 0;
}
-#else
-int offline_pages(unsigned long start_pfn, unsigned long nr_pages)
-{
- return -EINVAL;
-}
-int remove_memory(int nid, u64 start, u64 size)
-{
- return -EINVAL;
-}
-#endif /* CONFIG_MEMORY_HOTREMOVE */
EXPORT_SYMBOL_GPL(remove_memory);
+#endif /* CONFIG_MEMORY_HOTREMOVE */
{
if (fatal_signal_pending(current))
return -ERESTARTSYS;
- freezable_schedule();
+ freezable_schedule_unsafe();
return 0;
}
#include <linux/mount.h>
#include <net/checksum.h>
#include <linux/security.h>
+#include <linux/freezer.h>
struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE];
EXPORT_SYMBOL_GPL(unix_socket_table);
set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
unix_state_unlock(sk);
- timeo = schedule_timeout(timeo);
+ timeo = freezable_schedule_timeout(timeo);
unix_state_lock(sk);
clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
}
projects / linux-imx.git / commitdiff