tjh.dev
Linux kernel mirror (for testing)
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linux
1What: /sys/devices/platform/soc@X/XXXXXXX.ipa/
2Date: June 2021
3KernelVersion: v5.14
4Contact: Alex Elder <elder@kernel.org>
5Description:
6 The /sys/devices/platform/soc@X/XXXXXXX.ipa/ directory
7 contains read-only attributes exposing information about
8 an IPA device. The X values could vary, but are typically
9 "soc@0/1e40000.ipa".
10
11What: .../XXXXXXX.ipa/version
12Date: June 2021
13KernelVersion: v5.14
14Contact: Alex Elder <elder@kernel.org>
15Description:
16 The .../XXXXXXX.ipa/version file contains the IPA hardware
17 version, as a period-separated set of two or three integers
18 (e.g., "3.5.1" or "4.2").
19
20What: .../XXXXXXX.ipa/feature/
21Date: June 2021
22KernelVersion: v5.14
23Contact: Alex Elder <elder@kernel.org>
24Description:
25 The .../XXXXXXX.ipa/feature/ directory contains a set of
26 attributes describing features implemented by the IPA
27 hardware.
28
29What: .../XXXXXXX.ipa/feature/rx_offload
30Date: June 2021
31KernelVersion: v5.14
32Contact: Alex Elder <elder@kernel.org>
33Description:
34 The .../XXXXXXX.ipa/feature/rx_offload file contains a
35 string indicating the type of receive checksum offload
36 that is supported by the hardware. The possible values
37 are "MAPv4" or "MAPv5".
38
39What: .../XXXXXXX.ipa/feature/tx_offload
40Date: June 2021
41KernelVersion: v5.14
42Contact: Alex Elder <elder@kernel.org>
43Description:
44 The .../XXXXXXX.ipa/feature/tx_offload file contains a
45 string indicating the type of transmit checksum offload
46 that is supported by the hardware. The possible values
47 are "MAPv4" or "MAPv5".
48
49What: .../XXXXXXX.ipa/endpoint_id/
50Date: July 2022
51KernelVersion: v5.19
52Contact: Alex Elder <elder@kernel.org>
53Description:
54 The .../XXXXXXX.ipa/endpoint_id/ directory contains
55 attributes that define IDs associated with IPA
56 endpoints. The "rx" or "tx" in an endpoint name is
57 from the perspective of the AP. An endpoint ID is a
58 small unsigned integer.
59
60What: .../XXXXXXX.ipa/endpoint_id/modem_rx
61Date: July 2022
62KernelVersion: v5.19
63Contact: Alex Elder <elder@kernel.org>
64Description:
65 The .../XXXXXXX.ipa/endpoint_id/modem_rx file contains
66 the ID of the AP endpoint on which packets originating
67 from the embedded modem are received.
68
69What: .../XXXXXXX.ipa/endpoint_id/modem_tx
70Date: July 2022
71KernelVersion: v5.19
72Contact: Alex Elder <elder@kernel.org>
73Description:
74 The .../XXXXXXX.ipa/endpoint_id/modem_tx file contains
75 the ID of the AP endpoint on which packets destined
76 for the embedded modem are sent.
77
78What: .../XXXXXXX.ipa/endpoint_id/monitor_rx
79Date: July 2022
80KernelVersion: v5.19
81Contact: Alex Elder <elder@kernel.org>
82Description:
83 The .../XXXXXXX.ipa/endpoint_id/monitor_rx file contains
84 the ID of the AP endpoint on which IPA "monitor" data is
85 received. The monitor endpoint supplies replicas of
86 packets that enter the IPA hardware for processing.
87 Each replicated packet is preceded by a fixed-size "ODL"
88 header (see .../XXXXXXX.ipa/feature/monitor, above).
89 Large packets are truncated, to reduce the bandwidth
90 required to provide the monitor function.
91
92What: .../XXXXXXX.ipa/modem/
93Date: June 2021
94KernelVersion: v5.14
95Contact: Alex Elder <elder@kernel.org>
96Description:
97 The .../XXXXXXX.ipa/modem/ directory contains attributes
98 describing properties of the modem embedded in the SoC.
99
100What: .../XXXXXXX.ipa/modem/rx_endpoint_id
101Date: June 2021
102KernelVersion: v5.14
103Contact: Alex Elder <elder@kernel.org>
104Description:
105 The .../XXXXXXX.ipa/modem/rx_endpoint_id file duplicates
106 the value found in .../XXXXXXX.ipa/endpoint_id/modem_rx.
107
108What: .../XXXXXXX.ipa/modem/tx_endpoint_id
109Date: June 2021
110KernelVersion: v5.14
111Contact: Alex Elder <elder@kernel.org>
112Description:
113 The .../XXXXXXX.ipa/modem/tx_endpoint_id file duplicates
114 the value found in .../XXXXXXX.ipa/endpoint_id/modem_tx.