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Create a new attribute group meant to provide a single place that defines endpoint IDs that might be needed by user space. Not all defined endpoints are presented, and only those that are defined will be made visible. The new attributes use "extended" device attributes to hold endpoint IDs, which is a little more compact and efficient. Reimplement the existing modem endpoint ID attribute files using common code. Signed-off-by: Alex Elder <elder@linaro.org> Link: https://lore.kernel.org/r/20220719191639.373249-1-elder@linaro.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
115 lines
3.7 KiB
Plaintext
115 lines
3.7 KiB
Plaintext
What: /sys/devices/platform/soc@X/XXXXXXX.ipa/
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Date: June 2021
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KernelVersion: v5.14
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The /sys/devices/platform/soc@X/XXXXXXX.ipa/ directory
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contains read-only attributes exposing information about
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an IPA device. The X values could vary, but are typically
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"soc@0/1e40000.ipa".
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What: .../XXXXXXX.ipa/version
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Date: June 2021
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KernelVersion: v5.14
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The .../XXXXXXX.ipa/version file contains the IPA hardware
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version, as a period-separated set of two or three integers
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(e.g., "3.5.1" or "4.2").
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What: .../XXXXXXX.ipa/feature/
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Date: June 2021
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KernelVersion: v5.14
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The .../XXXXXXX.ipa/feature/ directory contains a set of
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attributes describing features implemented by the IPA
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hardware.
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What: .../XXXXXXX.ipa/feature/rx_offload
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Date: June 2021
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KernelVersion: v5.14
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The .../XXXXXXX.ipa/feature/rx_offload file contains a
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string indicating the type of receive checksum offload
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that is supported by the hardware. The possible values
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are "MAPv4" or "MAPv5".
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What: .../XXXXXXX.ipa/feature/tx_offload
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Date: June 2021
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KernelVersion: v5.14
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The .../XXXXXXX.ipa/feature/tx_offload file contains a
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string indicating the type of transmit checksum offload
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that is supported by the hardware. The possible values
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are "MAPv4" or "MAPv5".
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What: .../XXXXXXX.ipa/endpoint_id/
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Date: July 2022
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KernelVersion: v5.19
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The .../XXXXXXX.ipa/endpoint_id/ directory contains
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attributes that define IDs associated with IPA
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endpoints. The "rx" or "tx" in an endpoint name is
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from the perspective of the AP. An endpoint ID is a
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small unsigned integer.
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What: .../XXXXXXX.ipa/endpoint_id/modem_rx
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Date: July 2022
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KernelVersion: v5.19
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The .../XXXXXXX.ipa/endpoint_id/modem_rx file contains
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the ID of the AP endpoint on which packets originating
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from the embedded modem are received.
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What: .../XXXXXXX.ipa/endpoint_id/modem_tx
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Date: July 2022
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KernelVersion: v5.19
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The .../XXXXXXX.ipa/endpoint_id/modem_tx file contains
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the ID of the AP endpoint on which packets destined
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for the embedded modem are sent.
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What: .../XXXXXXX.ipa/endpoint_id/monitor_rx
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Date: July 2022
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KernelVersion: v5.19
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The .../XXXXXXX.ipa/endpoint_id/monitor_rx file contains
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the ID of the AP endpoint on which IPA "monitor" data is
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received. The monitor endpoint supplies replicas of
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packets that enter the IPA hardware for processing.
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Each replicated packet is preceded by a fixed-size "ODL"
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header (see .../XXXXXXX.ipa/feature/monitor, above).
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Large packets are truncated, to reduce the bandwidth
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required to provide the monitor function.
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What: .../XXXXXXX.ipa/modem/
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Date: June 2021
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KernelVersion: v5.14
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The .../XXXXXXX.ipa/modem/ directory contains attributes
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describing properties of the modem embedded in the SoC.
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What: .../XXXXXXX.ipa/modem/rx_endpoint_id
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Date: June 2021
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KernelVersion: v5.14
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The .../XXXXXXX.ipa/modem/rx_endpoint_id file duplicates
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the value found in .../XXXXXXX.ipa/endpoint_id/modem_rx.
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What: .../XXXXXXX.ipa/modem/tx_endpoint_id
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Date: June 2021
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KernelVersion: v5.14
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Contact: Alex Elder <elder@kernel.org>
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Description:
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The .../XXXXXXX.ipa/modem/tx_endpoint_id file duplicates
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the value found in .../XXXXXXX.ipa/endpoint_id/modem_tx.
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