Hi, We have HP rx7640,rx7620,HP UX 11.23 v. Could you please tell me command line to identify no. Of PCI slots & identify if it is free. I tried cstmmap but could not interpret any thing from it. I have a Linux system that contains several PCIe cards. Dmesg indicates that one of the cards is generating an error: 3970.385387 pcieport 0000:00:02.0: PCIe Bus Error: severity=Corrected, typ.
-->The PCI_SLOT_NUMBER structure is obsolete. It defines the format of the Slot parameter to the obsolete HalXxxBusData routines when they are called with the BusDataType value PCIConfiguration.
Syntax
Members
u
u.bits
Specifies the particular device on a multifunction adapter at the given slot that is being configured. The DeviceNumber indicates the logical slot number for the adapter; the FunctionNumber indicates the particular device on that adapter.
u.bits.DeviceNumber
u.bits.FunctionNumber Closest casino near joplin mo.
u.bits.Reserved
u.AsULONG
Specifies the logical slot number of the device being configured.
Check Free Pci Slots Linux Installer
Remarks
https://luckyneo.netlify.app/gta-online-casino-wheel-second-time-on-car.html. Drivers of PCI devices can call HalGetBusData or HalGetBusDataByOffset more than once for the same slot number to get the configuration information for their device(s).
For example, a driver might search for devices it supports on all PCI buses in the machine first, and then call HalGetBusData(ByOffset) again to request more configuration information about devices of interest. Such a driver could code a loop that calls HalGetBusData(ByOffset) with an input Buffer of sufficient Length only to contain enough of the PCI_COMMON_CONFIG to determine the VendorID and DeviceID of each PCI device. Online casino with bonus that has unlimited payout. After finding the Slot numbers for any promising PCI devices, the driver would call HalGetBusData or HalGetBusDataByOffset one or more times with additional buffer space to get the information needed to configure its devices.
Requirements
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h, Miniport.h) |
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See also
Using a few simple commands you can easily map a PCI slot back to its directly connected NUMA node. This information comes in very handy when implementing NFV leveraged technologies such as CPU Pinning and SRIOV.
First, you will need to install hwloc and hwloc-gui, if it is not already installed on your system. hwloc-gui provides the lstopo command, so you will need to install the gui package even if you are going to run the command on a headless system.
# yum -y install hwloc.x86_64 hwloc-gui.x86_64
Now you can run lstopo. Below is the output from one of my dual socket, quad core Xeon systems.
# lstopo
Machine (40GB)
NUMANode L#0 (P#0 16GB) + Socket L#0 + L3 L#0 (8192KB)
L2 L#0 (256KB) + L1d L#0 (32KB) + L1i L#0 (32KB) + Core L#0
PU L#0 (P#0)
PU L#1 (P#8)
L2 L#1 (256KB) + L1d L#1 (32KB) + L1i L#1 (32KB) + Core L#1
PU L#2 (P#1)
PU L#3 (P#9)
L2 L#2 (256KB) + L1d L#2 (32KB) + L1i L#2 (32KB) + Core L#2
PU L#4 (P#2)
PU L#5 (P#10)
L2 L#3 (256KB) + L1d L#3 (32KB) + L1i L#3 (32KB) + Core L#3
PU L#6 (P#3)
PU L#7 (P#11)
NUMANode L#1 (P#1 24GB) + Socket L#1 + L3 L#1 (8192KB)
L2 L#4 (256KB) + L1d L#4 (32KB) + L1i L#4 (32KB) + Core L#4
PU L#8 (P#4)
PU L#9 (P#12)
L2 L#5 (256KB) + L1d L#5 (32KB) + L1i L#5 (32KB) + Core L#5
PU L#10 (P#5)
PU L#11 (P#13)
L2 L#6 (256KB) + L1d L#6 (32KB) + L1i L#6 (32KB) + Core L#6
PU L#12 (P#6)
PU L#13 (P#14)
L2 L#7 (256KB) + L1d L#7 (32KB) + L1i L#7 (32KB) + Core L#7
PU L#14 (P#7)
PU L#15 (P#15)
HostBridge L#0
PCIBridge
PCI 8086:10c9
Net L#0 “enp8s0f0”
PCI 8086:10c9
Net L#1 “enp8s0f1”
PCIBridge
PCIBridge
PCIBridge
PCI 8086:10e8
Net L#2 “enp5s0f0”
PCI 8086:10e8
Net L#3 “enp5s0f1”
PCIBridge
PCI 8086:10e8
Net L#4 “enp4s0f0”
PCI 8086:10e8
Net L#5 “enp4s0f1”
PCIBridge
PCI 102b:0532
GPU L#6 “card0”
GPU L#7 “controlD64”
PCI 8086:3a22
Block L#8 “sr0”
Block L#9 “sda”
Block L#10 “sdb”
Block L#11 “sdc”
The first 27 lines of output tell you which cores are in each socket.
Lines starting with “HostBridge L#0” list the PCI devices attached to socket 0. On more modern dual socket systems (think Sandybridge) you would have a “HostBridge L#8” section as well.
“The PCI host bridge provides an interconnect between the processor and peripheral components. Through the PCI host bridge, the processor can directly access main memory independent of other PCI bus masters. For example, while the CPU is fetching data from the cache controller in the host bridge, other PCI devices can also access the system memory through the host bridge. The advantage of this architecture lies in its separation of the I/O bus from the processor’s host bus.”
Unfortunately, my lab systems are Nehalem based machines which implement what is called QPI to share a host bridge between CPU sockets. See image below.
Nehalem QPI Architecture
Pci Slots Types
Nonetheless, we are able to determine which CPU socket is associated with a specific PCI device. For this example, we will focus on the devices below since they are both directly attached to the PCI Host Bridge and not the PCI Bus.
Isa Slots
HostBridge L#0
PCIBridge
PCI 8086:10c9
Net L#0 “enp8s0f0”
PCI 8086:10c9
Net L#1 “enp8s0f1”
Now using the lspci command I can find the exact devices per NUMA node.
lspci -nn | grep 8086:10c9
08:00.0 Ethernet controller [0200]: Intel Corporation 82576 Gigabit Network Connection [8086:10c9] (rev 01)
08:00.1 Ethernet controller [0200]: Intel Corporation 82576 Gigabit Network Connection [8086:10c9] (rev 01)
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