140e6c395SSrinivas PandruvadaWhat: /sys/kernel/debug/tpmi-<n>/pfs_dump 240e6c395SSrinivas PandruvadaDate: November 2023 340e6c395SSrinivas PandruvadaKernelVersion: 6.6 440e6c395SSrinivas PandruvadaContact: srinivas.pandruvada@linux.intel.com 540e6c395SSrinivas PandruvadaDescription: 640e6c395SSrinivas PandruvadaThe PFS (PM Feature Structure) table, shows details of each power 740e6c395SSrinivas Pandruvadamanagement feature. This includes: 840e6c395SSrinivas Pandruvadatpmi_id, number of entries, entry size, offset, vsec offset, lock status 940e6c395SSrinivas Pandruvadaand disabled status. 1040e6c395SSrinivas PandruvadaUsers: Debugging, any user space test suite 1140e6c395SSrinivas Pandruvada 1240e6c395SSrinivas PandruvadaWhat: /sys/kernel/debug/tpmi-<n>/tpmi-id-<n>/mem_dump 1340e6c395SSrinivas PandruvadaDate: November 2023 1440e6c395SSrinivas PandruvadaKernelVersion: 6.6 1540e6c395SSrinivas PandruvadaContact: srinivas.pandruvada@linux.intel.com 1640e6c395SSrinivas PandruvadaDescription: 1740e6c395SSrinivas PandruvadaShows the memory dump of the MMIO region for a TPMI ID. 1840e6c395SSrinivas PandruvadaUsers: Debugging, any user space test suite 1940e6c395SSrinivas Pandruvada 2040e6c395SSrinivas PandruvadaWhat: /sys/kernel/debug/tpmi-<n>/tpmi-id-<n>/mem_write 2140e6c395SSrinivas PandruvadaDate: November 2023 2240e6c395SSrinivas PandruvadaKernelVersion: 6.6 2340e6c395SSrinivas PandruvadaContact: srinivas.pandruvada@linux.intel.com 2440e6c395SSrinivas PandruvadaDescription: 2540e6c395SSrinivas PandruvadaAllows to write at any offset. It doesn't check for Read/Write access 2640e6c395SSrinivas Pandruvadaas hardware will not allow to write at read-only memory. This write is 2740e6c395SSrinivas Pandruvadaat offset multiples of 4. The format is instance,offset,contents. 2840e6c395SSrinivas PandruvadaExample: 2940e6c395SSrinivas Pandruvadaecho 0,0x20,0xff > mem_write 3040e6c395SSrinivas Pandruvadaecho 1,64,64 > mem_write 3140e6c395SSrinivas PandruvadaUsers: Debugging, any user space test suite 32*0da7a954STero Kristo 33*0da7a954STero KristoWhat: /sys/kernel/debug/tpmi-<n>/plr/domain<n>/status 34*0da7a954STero KristoDate: Aug 2024 35*0da7a954STero KristoKernelVersion: 6.11 36*0da7a954STero KristoContact: Tero Kristo <tero.kristo@linux.intel.com> 37*0da7a954STero KristoDescription: 38*0da7a954STero KristoShows the currently active Performance Limit Reasons for die level and the 39*0da7a954STero Kristoindividual CPUs under the die. The contents of this file are sticky, and 40*0da7a954STero Kristoclearing all the statuses can be done by writing "0\n" to this file. 41