Lehekülje Udev lähteteksti vaatamine

===Sissejuhatus===

TODO

===Tööpõhimõte===

<pre>
root@pm60-trt:~# udevadm info -a -p /sys/class/net/enp6s0 | grep -A 3 "looking at p"
  looking at parent device '/devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:06.0/0000:06:00.0':
    KERNELS=="0000:06:00.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="r8169"
--
  looking at parent device '/devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:06.0':
    KERNELS=="0000:03:06.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="pcieport"
--
  looking at parent device '/devices/pci0000:00/0000:00:01.3/0000:02:00.2':
    KERNELS=="0000:02:00.2"
    SUBSYSTEMS=="pci"
    DRIVERS=="pcieport"
--
  looking at parent device '/devices/pci0000:00/0000:00:01.3':
    KERNELS=="0000:00:01.3"
    SUBSYSTEMS=="pci"
    DRIVERS=="pcieport"
--
  looking at parent device '/devices/pci0000:00':
    KERNELS=="pci0000:00"
    SUBSYSTEMS==""
    DRIVERS==""

root@pm60-trt:~# udevadm info -a -p /sys/class/nvme/nvme1 | grep -A 3 "looking at pa"
  looking at parent device '/devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:09.0/0000:08:00.0':
    KERNELS=="0000:08:00.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="nvme"
--
  looking at parent device '/devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:09.0':
    KERNELS=="0000:03:09.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="pcieport"
--
  looking at parent device '/devices/pci0000:00/0000:00:01.3/0000:02:00.2':
    KERNELS=="0000:02:00.2"
    SUBSYSTEMS=="pci"
    DRIVERS=="pcieport"
--
  looking at parent device '/devices/pci0000:00/0000:00:01.3':
    KERNELS=="0000:00:01.3"
    SUBSYSTEMS=="pci"
    DRIVERS=="pcieport"
--
  looking at parent device '/devices/pci0000:00':
    KERNELS=="pci0000:00"
    SUBSYSTEMS==""
    DRIVERS==""

root@pm60-trt:~# udevadm info -a -p "/sys/class/net/enp4s0f0np0" | grep -A 3 "looking at p"
  looking at parent device '/devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:00.0/0000:04:00.0':
    KERNELS=="0000:04:00.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="mlx5_core"
--
  looking at parent device '/devices/pci0000:00/0000:00:01.3/0000:02:00.2/0000:03:00.0':
    KERNELS=="0000:03:00.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="pcieport"
--
  looking at parent device '/devices/pci0000:00/0000:00:01.3/0000:02:00.2':
    KERNELS=="0000:02:00.2"
    SUBSYSTEMS=="pci"
    DRIVERS=="pcieport"
--
  looking at parent device '/devices/pci0000:00/0000:00:01.3':
    KERNELS=="0000:00:01.3"
    SUBSYSTEMS=="pci"
    DRIVERS=="pcieport"
--
  looking at parent device '/devices/pci0000:00':
    KERNELS=="pci0000:00"
    SUBSYSTEMS==""
    DRIVERS==""

root@pm60-trt:~# lspci -vt
-[0000:00]-+-00.0  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Root Complex
           +-00.2  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) I/O Memory Management Unit
           +-01.0  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
           +-01.1-[01]----00.0  Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983
           +-01.3-[02-08]--+-00.0  Advanced Micro Devices, Inc. [AMD] Device 43d0
           |               +-00.1  Advanced Micro Devices, Inc. [AMD] 400 Series Chipset SATA Controller
           |               \-00.2-[03-08]--+-00.0-[04]--+-00.0  Mellanox Technologies MT2894 Family [ConnectX-6 Lx]
           |                               |            \-00.1  Mellanox Technologies MT2894 Family [ConnectX-6 Lx]
           |                               +-04.0-[05]----00.0  ASMedia Technology Inc. ASM1142 USB 3.1 Host Controller
           |                               +-06.0-[06]----00.0  Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           |                               +-07.0-[07]----00.0  Intel Corporation I211 Gigabit Network Connection
           |                               \-09.0-[08]----00.0  Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983
           +-02.0  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
           +-03.0  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
           +-03.1-[09]----00.0  ASMedia Technology Inc. ASM1164 Serial ATA AHCI Controller
           +-03.2-[0a]----00.0  ASMedia Technology Inc. ASM1164 Serial ATA AHCI Controller
           +-04.0  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
           +-07.0  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
           +-07.1-[0b]--+-00.0  Advanced Micro Devices, Inc. [AMD] Zeppelin/Raven/Raven2 PCIe Dummy Function
           |            +-00.2  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Platform Security Processor (PSP) 3.0 Device
           |            \-00.3  Advanced Micro Devices, Inc. [AMD] Zeppelin USB 3.0 xHCI Compliant Host Controller
           +-08.0  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
           +-08.1-[0c]--+-00.0  Advanced Micro Devices, Inc. [AMD] Zeppelin/Renoir PCIe Dummy Function
           |            +-00.2  Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode]
           |            \-00.3  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) HD Audio Controller
           +-14.0  Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller
           +-14.3  Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge
           +-18.0  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 0
           +-18.1  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 1
           +-18.2  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 2
           +-18.3  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 3
           +-18.4  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 4
           +-18.5  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 5
           +-18.6  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 6
           \-18.7  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 7
root@pm60-trt:~#
</pre>

pnp seadmed

<pre>
root@pm60-trt:~# ls -ld /run/udev/data/* | grep PNP
-rw-r--r-- 1 root root   62 Jul  5 20:49 /run/udev/data/+acpi:PNP0000:00
-rw-r--r-- 1 root root   62 Jul  5 20:49 /run/udev/data/+acpi:PNP0100:00
-rw-r--r-- 1 root root   62 Jul  5 20:49 /run/udev/data/+acpi:PNP0103:00
-rw-r--r-- 1 root root   62 Jul  5 20:49 /run/udev/data/+acpi:PNP0200:00
...
</pre>

===Kasulikud lisamaterjalid===

* TODO