1What: /sys/devices/uncore_iio_x/dieX 2Date: February 2020 3Contact: Roman Sudarikov <roman.sudarikov@linux.intel.com> 4Description: 5 Each IIO stack (PCIe root port) has its own IIO PMON block, so 6 each dieX file (where X is die number) holds "Segment:Root Bus" 7 for PCIe root port, which can be monitored by that IIO PMON 8 block. 9 For example, on 4-die Xeon platform with up to 6 IIO stacks per 10 die and, therefore, 6 IIO PMON blocks per die, the mapping of 11 IIO PMON block 0 exposes as the following:: 12 13 $ ls /sys/devices/uncore_iio_0/die* 14 -r--r--r-- /sys/devices/uncore_iio_0/die0 15 -r--r--r-- /sys/devices/uncore_iio_0/die1 16 -r--r--r-- /sys/devices/uncore_iio_0/die2 17 -r--r--r-- /sys/devices/uncore_iio_0/die3 18 19 $ tail /sys/devices/uncore_iio_0/die* 20 ==> /sys/devices/uncore_iio_0/die0 <== 21 0000:00 22 ==> /sys/devices/uncore_iio_0/die1 <== 23 0000:40 24 ==> /sys/devices/uncore_iio_0/die2 <== 25 0000:80 26 ==> /sys/devices/uncore_iio_0/die3 <== 27 0000:c0 28 29 Which means:: 30 31 IIO PMU 0 on die 0 belongs to PCI RP on bus 0x00, domain 0x0000 32 IIO PMU 0 on die 1 belongs to PCI RP on bus 0x40, domain 0x0000 33 IIO PMU 0 on die 2 belongs to PCI RP on bus 0x80, domain 0x0000 34 IIO PMU 0 on die 3 belongs to PCI RP on bus 0xc0, domain 0x0000 35