diff options
| author | Alex Elder <elder@linaro.org> | 2022-07-19 22:16:39 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-07-21 07:03:26 +0300 |
| commit | d79e4164d0d51f5a39ee7208823335a5fee902e0 (patch) | |
| tree | acb4a82e7db2ca845842db1da5f4d5cf9195a8ac /Documentation/ABI | |
| parent | f12b86c0d60689aa3973bab1fcea0ead9d77e23b (diff) | |
| download | linux-d79e4164d0d51f5a39ee7208823335a5fee902e0.tar.xz | |
net: ipa: add an endpoint device attribute group
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>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-platform-soc-ipa | 62 |
1 files changed, 49 insertions, 13 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa b/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa index c56dcf15bf29..364b1ba41242 100644 --- a/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa +++ b/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa @@ -46,33 +46,69 @@ Description: that is supported by the hardware. The possible values are "MAPv4" or "MAPv5". +What: .../XXXXXXX.ipa/endpoint_id/ +Date: July 2022 +KernelVersion: v5.19 +Contact: Alex Elder <elder@kernel.org> +Description: + The .../XXXXXXX.ipa/endpoint_id/ directory contains + attributes that define IDs associated with IPA + endpoints. The "rx" or "tx" in an endpoint name is + from the perspective of the AP. An endpoint ID is a + small unsigned integer. + +What: .../XXXXXXX.ipa/endpoint_id/modem_rx +Date: July 2022 +KernelVersion: v5.19 +Contact: Alex Elder <elder@kernel.org> +Description: + The .../XXXXXXX.ipa/endpoint_id/modem_rx file contains + the ID of the AP endpoint on which packets originating + from the embedded modem are received. + +What: .../XXXXXXX.ipa/endpoint_id/modem_tx +Date: July 2022 +KernelVersion: v5.19 +Contact: Alex Elder <elder@kernel.org> +Description: + The .../XXXXXXX.ipa/endpoint_id/modem_tx file contains + the ID of the AP endpoint on which packets destined + for the embedded modem are sent. + +What: .../XXXXXXX.ipa/endpoint_id/monitor_rx +Date: July 2022 +KernelVersion: v5.19 +Contact: Alex Elder <elder@kernel.org> +Description: + The .../XXXXXXX.ipa/endpoint_id/monitor_rx file contains + the ID of the AP endpoint on which IPA "monitor" data is + received. The monitor endpoint supplies replicas of + packets that enter the IPA hardware for processing. + Each replicated packet is preceded by a fixed-size "ODL" + header (see .../XXXXXXX.ipa/feature/monitor, above). + Large packets are truncated, to reduce the bandwidth + required to provide the monitor function. + What: .../XXXXXXX.ipa/modem/ Date: June 2021 KernelVersion: v5.14 Contact: Alex Elder <elder@kernel.org> Description: - The .../XXXXXXX.ipa/modem/ directory contains a set of - attributes describing properties of the modem execution - environment reachable by the IPA hardware. + The .../XXXXXXX.ipa/modem/ directory contains attributes + describing properties of the modem embedded in the SoC. What: .../XXXXXXX.ipa/modem/rx_endpoint_id Date: June 2021 KernelVersion: v5.14 Contact: Alex Elder <elder@kernel.org> Description: - The .../XXXXXXX.ipa/feature/rx_endpoint_id file contains - the AP endpoint ID that receives packets originating from - the modem execution environment. The "rx" is from the - perspective of the AP; this endpoint is considered an "IPA - producer". An endpoint ID is a small unsigned integer. + The .../XXXXXXX.ipa/modem/rx_endpoint_id file duplicates + the value found in .../XXXXXXX.ipa/endpoint_id/modem_rx. What: .../XXXXXXX.ipa/modem/tx_endpoint_id Date: June 2021 KernelVersion: v5.14 Contact: Alex Elder <elder@kernel.org> Description: - The .../XXXXXXX.ipa/feature/tx_endpoint_id file contains - the AP endpoint ID used to transmit packets destined for - the modem execution environment. The "tx" is from the - perspective of the AP; this endpoint is considered an "IPA - consumer". An endpoint ID is a small unsigned integer. + The .../XXXXXXX.ipa/modem/tx_endpoint_id file duplicates + the value found in .../XXXXXXX.ipa/endpoint_id/modem_tx. |