1 What: /sys/kernel/debug/tpmi-<n>/pfs_dump 2 Date: November 2023 3 KernelVersion: 6.6 4 Contact: srinivas.pandruvada@linux.intel.com 5 Description: 6 The PFS (PM Feature Structure) table, shows details of each power 7 management feature. This includes: 8 tpmi_id, number of entries, entry size, offset, vsec offset, lock status 9 and disabled status. 10 Users: Debugging, any user space test suite 11 12 What: /sys/kernel/debug/tpmi-<n>/tpmi-id-<n>/mem_dump 13 Date: November 2023 14 KernelVersion: 6.6 15 Contact: srinivas.pandruvada@linux.intel.com 16 Description: 17 Shows the memory dump of the MMIO region for a TPMI ID. 18 Users: Debugging, any user space test suite 19 20 What: /sys/kernel/debug/tpmi-<n>/tpmi-id-<n>/mem_write 21 Date: November 2023 22 KernelVersion: 6.6 23 Contact: srinivas.pandruvada@linux.intel.com 24 Description: 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-only memory. This write is 27 at offset multiples of 4. The format is instance,offset,contents. 28 Example: 29 echo 0,0x20,0xff > mem_write 30 echo 1,64,64 > mem_write 31 Users: Debugging, any user space test suite 32 33 What: /sys/kernel/debug/tpmi-<n>/plr/domain<n>/status 34 Date: Aug 2024 35 KernelVersion: 6.11 36 Contact: Tero Kristo <tero.kristo@linux.intel.com> 37 Description: 38 Shows the currently active Performance Limit Reasons for die level and the 39 individual CPUs under the die. The contents of this file are sticky, and 40 clearing all the statuses can be done by writing "0\n" to this file.
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