| What: /sys/kernel/debug/tpmi-<n>/pfs_dump | |
| Date: November 2023 | |
| KernelVersion: 6.6 | |
| Contact: srinivas.pandruvada@linux.intel.com | |
| Description: | |
| The PFS (PM Feature Structure) table, shows details of each power | |
| management feature. This includes: | |
| tpmi_id, number of entries, entry size, offset, vsec offset, lock status | |
| and disabled status. | |
| Users: Debugging, any user space test suite | |
| What: /sys/kernel/debug/tpmi-<n>/tpmi-id-<n>/mem_dump | |
| Date: November 2023 | |
| KernelVersion: 6.6 | |
| Contact: srinivas.pandruvada@linux.intel.com | |
| Description: | |
| Shows the memory dump of the MMIO region for a TPMI ID. | |
| Users: Debugging, any user space test suite | |
| What: /sys/kernel/debug/tpmi-<n>/tpmi-id-<n>/mem_write | |
| Date: November 2023 | |
| KernelVersion: 6.6 | |
| Contact: srinivas.pandruvada@linux.intel.com | |
| Description: | |
| Allows to write at any offset. It doesn't check for Read/Write access | |
| as hardware will not allow to write at read-only memory. This write is | |
| at offset multiples of 4. The format is instance,offset,contents. | |
| Example: | |
| echo 0,0x20,0xff > mem_write | |
| echo 1,64,64 > mem_write | |
| Users: Debugging, any user space test suite | |
| What: /sys/kernel/debug/tpmi-<n>/plr/domain<n>/status | |
| Date: Aug 2024 | |
| KernelVersion: 6.11 | |
| Contact: Tero Kristo <tero.kristo@linux.intel.com> | |
| Description: | |
| Shows the currently active Performance Limit Reasons for die level and the | |
| individual CPUs under the die. The contents of this file are sticky, and | |
| clearing all the statuses can be done by writing "0\n" to this file. |