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 32
33 What: /sys/kernel/debug/tpmi-<n>/plr 33 What: /sys/kernel/debug/tpmi-<n>/plr/domain<n>/status
34 Date: Aug 2024 34 Date: Aug 2024
35 KernelVersion: 6.11 35 KernelVersion: 6.11
36 Contact: Tero Kristo <tero.kristo@linux. 36 Contact: Tero Kristo <tero.kristo@linux.intel.com>
37 Description: 37 Description:
38 Shows the currently active Performance Limit R 38 Shows the currently active Performance Limit Reasons for die level and the
39 individual CPUs under the die. The contents of 39 individual CPUs under the die. The contents of this file are sticky, and
40 clearing all the statuses can be done by writi 40 clearing all the statuses can be done by writing "0\n" to this file.
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.