1 What: /sys/kernel/debug/tpmi-<n>/pfs 1 What: /sys/kernel/debug/tpmi-<n>/pfs_dump
2 Date: November 2023 2 Date: November 2023
3 KernelVersion: 6.6 3 KernelVersion: 6.6
4 Contact: srinivas.pandruvada@linux.inte 4 Contact: srinivas.pandruvada@linux.intel.com
5 Description: 5 Description:
6 The PFS (PM Feature Structure) table, shows de 6 The PFS (PM Feature Structure) table, shows details of each power
7 management feature. This includes: 7 management feature. This includes:
8 tpmi_id, number of entries, entry size, offset 8 tpmi_id, number of entries, entry size, offset, vsec offset, lock status
9 and disabled status. 9 and disabled status.
10 Users: Debugging, any user space test 10 Users: Debugging, any user space test suite
11 11
12 What: /sys/kernel/debug/tpmi-<n>/tpm 12 What: /sys/kernel/debug/tpmi-<n>/tpmi-id-<n>/mem_dump
13 Date: November 2023 13 Date: November 2023
14 KernelVersion: 6.6 14 KernelVersion: 6.6
15 Contact: srinivas.pandruvada@linux.inte 15 Contact: srinivas.pandruvada@linux.intel.com
16 Description: 16 Description:
17 Shows the memory dump of the MMIO region for a 17 Shows the memory dump of the MMIO region for a TPMI ID.
18 Users: Debugging, any user space test 18 Users: Debugging, any user space test suite
19 19
20 What: /sys/kernel/debug/tpmi-<n>/tpm 20 What: /sys/kernel/debug/tpmi-<n>/tpmi-id-<n>/mem_write
21 Date: November 2023 21 Date: November 2023
22 KernelVersion: 6.6 22 KernelVersion: 6.6
23 Contact: srinivas.pandruvada@linux.inte 23 Contact: srinivas.pandruvada@linux.intel.com
24 Description: 24 Description:
25 Allows to write at any offset. It doesn't chec 25 Allows to write at any offset. It doesn't check for Read/Write access
26 as hardware will not allow to write at read-on 26 as hardware will not allow to write at read-only memory. This write is
27 at offset multiples of 4. The format is instan 27 at offset multiples of 4. The format is instance,offset,contents.
28 Example: 28 Example:
29 echo 0,0x20,0xff > mem_write 29 echo 0,0x20,0xff > mem_write
30 echo 1,64,64 > mem_write 30 echo 1,64,64 > mem_write
31 Users: Debugging, any user space test 31 Users: Debugging, any user space test suite
32 <<
33 What: /sys/kernel/debug/tpmi-<n>/plr <<
34 Date: Aug 2024 <<
35 KernelVersion: 6.11 <<
36 Contact: Tero Kristo <tero.kristo@linux. <<
37 Description: <<
38 Shows the currently active Performance Limit R <<
39 individual CPUs under the die. The contents of <<
40 clearing all the statuses can be done by writi <<
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