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Merge tag 'pci-v5.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration changes:
- Evaluate PCI Boot Configuration _DSM to learn if firmware wants us
to preserve its resource assignments (Benjamin Herrenschmidt)
- Simplify resource distribution (Nicholas Johnson)
- Decode 32 GT/s link speed (Gustavo Pimentel)
Virtualization:
- Fix incorrect caching of VF config space size (Alex Williamson)
- Fix VF driver probing sysfs knobs (Alex Williamson)
Peer-to-peer DMA:
- Fix dma_virt_ops check (Logan Gunthorpe)
Altera host bridge driver:
- Allow building as module (Ley Foon Tan)
Armada 8K host bridge driver:
- add PHYs support (Miquel Raynal)
DesignWare host bridge driver:
- Export APIs to support removable loadable module (Vidya Sagar)
- Enable Relaxed Ordering erratum workaround only on Tegra20 &
Tegra30 (Vidya Sagar)
Hyper-V host bridge driver:
- Fix use-after-free in eject (Dexuan Cui)
Mobiveil host bridge driver:
- Clean up and fix many issues, including non-identify mapped
windows, 64-bit windows, multi-MSI, class code, INTx clearing (Hou
Zhiqiang)
Qualcomm host bridge driver:
- Use clk bulk API for 2.4.0 controllers (Bjorn Andersson)
- Add QCS404 support (Bjorn Andersson)
- Assert PERST for at least 100ms (Niklas Cassel)
R-Car host bridge driver:
- Add r8a774a1 DT support (Biju Das)
Tegra host bridge driver:
- Add support for Gen2, opportunistic UpdateFC and ACK (PCIe protocol
details) AER, GPIO-based PERST# (Manikanta Maddireddy)
- Fix many issues, including power-on failure cases, interrupt
masking in suspend, UPHY settings, AFI dynamic clock gating,
pending DLL transactions (Manikanta Maddireddy)
Xilinx host bridge driver:
- Fix NWL Multi-MSI programming (Bharat Kumar Gogada)
Endpoint support:
- Fix 64bit BAR support (Alan Mikhak)
- Fix pcitest build issues (Alan Mikhak, Andy Shevchenko)
Bug fixes:
- Fix NVIDIA GPU multi-function power dependencies (Abhishek Sahu)
- Fix NVIDIA GPU HDA enablement issue (Lukas Wunner)
- Ignore lockdep for sysfs "remove" (Marek Vasut)
Misc:
- Convert docs to reST (Changbin Du, Mauro Carvalho Chehab)"
* tag 'pci-v5.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (107 commits)
PCI: Enable NVIDIA HDA controllers
tools: PCI: Fix installation when `make tools/pci_install`
PCI: dwc: pci-dra7xx: Fix compilation when !CONFIG_GPIOLIB
PCI: Fix typos and whitespace errors
PCI: mobiveil: Fix INTx interrupt clearing in mobiveil_pcie_isr()
PCI: mobiveil: Fix infinite-loop in the INTx handling function
PCI: mobiveil: Move PCIe PIO enablement out of inbound window routine
PCI: mobiveil: Add upper 32-bit PCI base address setup in inbound window
PCI: mobiveil: Add upper 32-bit CPU base address setup in outbound window
PCI: mobiveil: Mask out hardcoded bits in inbound/outbound windows setup
PCI: mobiveil: Clear the control fields before updating it
PCI: mobiveil: Add configured inbound windows counter
PCI: mobiveil: Fix the valid check for inbound and outbound windows
PCI: mobiveil: Clean-up program_{ib/ob}_windows()
PCI: mobiveil: Remove an unnecessary return value check
PCI: mobiveil: Fix error return values
PCI: mobiveil: Refactor the MEM/IO outbound window initialization
PCI: mobiveil: Make some register updates more readable
PCI: mobiveil: Reformat the code for readability
dt-bindings: PCI: mobiveil: Change gpio_slave and apb_csr to optional
...
153 lines
4.9 KiB
Plaintext
153 lines
4.9 KiB
Plaintext
What: /sys/class/powercap/
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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The powercap/ class sub directory belongs to the power cap
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subsystem. Refer to
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Documentation/power/powercap/powercap.rst for details.
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What: /sys/class/powercap/<control type>
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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A <control type> is a unique name under /sys/class/powercap.
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Here <control type> determines how the power is going to be
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controlled. A <control type> can contain multiple power zones.
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What: /sys/class/powercap/<control type>/enabled
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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This allows to enable/disable power capping for a "control type".
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This status affects every power zone using this "control_type.
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What: /sys/class/powercap/<control type>/<power zone>
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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A power zone is a single or a collection of devices, which can
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be independently monitored and controlled. A power zone sysfs
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entry is qualified with the name of the <control type>.
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E.g. intel-rapl:0:1:1.
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What: /sys/class/powercap/<control type>/<power zone>/<child power zone>
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Power zones may be organized in a hierarchy in which child
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power zones provide monitoring and control for a subset of
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devices under the parent. For example, if there is a parent
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power zone for a whole CPU package, each CPU core in it can
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be a child power zone.
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What: /sys/class/powercap/.../<power zone>/name
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Specifies the name of this power zone.
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What: /sys/class/powercap/.../<power zone>/energy_uj
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Current energy counter in micro-joules. Write "0" to reset.
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If the counter can not be reset, then this attribute is
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read-only.
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What: /sys/class/powercap/.../<power zone>/max_energy_range_uj
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Range of the above energy counter in micro-joules.
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What: /sys/class/powercap/.../<power zone>/power_uw
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Current power in micro-watts.
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What: /sys/class/powercap/.../<power zone>/max_power_range_uw
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Range of the above power value in micro-watts.
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What: /sys/class/powercap/.../<power zone>/constraint_X_name
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Each power zone can define one or more constraints. Each
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constraint can have an optional name. Here "X" can have values
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from 0 to max integer.
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What: /sys/class/powercap/.../<power zone>/constraint_X_power_limit_uw
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Power limit in micro-watts should be applicable for
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the time window specified by "constraint_X_time_window_us".
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Here "X" can have values from 0 to max integer.
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What: /sys/class/powercap/.../<power zone>/constraint_X_time_window_us
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Time window in micro seconds. This is used along with
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constraint_X_power_limit_uw to define a power constraint.
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Here "X" can have values from 0 to max integer.
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What: /sys/class/powercap/<control type>/.../constraint_X_max_power_uw
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Maximum allowed power in micro watts for this constraint.
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Here "X" can have values from 0 to max integer.
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What: /sys/class/powercap/<control type>/.../constraint_X_min_power_uw
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Minimum allowed power in micro watts for this constraint.
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Here "X" can have values from 0 to max integer.
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What: /sys/class/powercap/.../<power zone>/constraint_X_max_time_window_us
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Maximum allowed time window in micro seconds for this
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constraint. Here "X" can have values from 0 to max integer.
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What: /sys/class/powercap/.../<power zone>/constraint_X_min_time_window_us
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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Minimum allowed time window in micro seconds for this
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constraint. Here "X" can have values from 0 to max integer.
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What: /sys/class/powercap/.../<power zone>/enabled
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Date: September 2013
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KernelVersion: 3.13
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Contact: linux-pm@vger.kernel.org
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Description:
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This allows to enable/disable power capping at power zone level.
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This applies to current power zone and its children.
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