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Devices and port's speed #114

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Saentist opened this issue Nov 24, 2020 · 9 comments
Open

Devices and port's speed #114

Saentist opened this issue Nov 24, 2020 · 9 comments

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@Saentist
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This is continuing from #113

ex:

lspci -vv | grep -E 'PCI bridge|LnkCap|LnkSta'
00:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Root Port (prog-if 00 [Normal decode])
                LnkCap: Port #1, Speed 5GT/s, Width x4, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge (rev 40) (prog-if 01 [Subtractive decode])
00:15.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 0) (prog-if 00 [Normal decode])
                LnkCap: Port #247, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
                LnkSta: Speed unknown, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
        Capabilities: [b0] Subsystem: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 0)
00:15.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 1) (prog-if 00 [Normal decode])
                LnkCap: Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
        Capabilities: [b0] Subsystem: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 1)
00:15.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 2) (prog-if 00 [Normal decode])
                LnkCap: Port #2, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
        Capabilities: [b0] Subsystem: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 2)
pcilib: sysfs_read_vpd: read failed: Input/output error
01:00.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #0, Speed 5GT/s, Width x2, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
02:01.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #1, Speed 2.5GT/s, Width x1, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
02:02.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #2, Speed 2.5GT/s, Width x1, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <4us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
pcilib: sysfs_read_vpd: read failed: Input/output error
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <4us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
07:00.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #0, Speed 5GT/s, Width x2, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
08:01.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #1, Speed 2.5GT/s, Width x1, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
08:02.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #2, Speed 2.5GT/s, Width x1, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <4us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
pcilib: sysfs_read_vpd: read failed: Input/output error
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <4us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <64us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-

and we see Speed and Width of pci device's and port's
@Saentist
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lspci -vv | grep -P "[0-9a-f]{2}:[0-9a-f]{2}\.[0-9a-f]|LnkSta:"
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) I/O Memory Management Unit
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7540D] (prog-if 00 [VGA controller])
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Trinity HDMI Audio Controller
00:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Root Port (prog-if 00 [Normal decode])
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 03) (prog-if 30 [XHCI])
00:10.1 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 03) (prog-if 30 [XHCI])
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 40) (prog-if 01 [AHCI 1.0])
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 11) (prog-if 10 [OHCI])
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 11) (prog-if 20 [EHCI])
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 11) (prog-if 10 [OHCI])
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 11) (prog-if 20 [EHCI])
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 14)
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 01)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge (rev 40) (prog-if 01 [Subtractive decode])
00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 11) (prog-if 10 [OHCI])
00:15.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 0) (prog-if 00 [Normal decode])
                LnkSta: Speed unknown, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
00:15.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 1) (prog-if 00 [Normal decode])
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
00:15.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 2) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 0
pcilib: sysfs_read_vpd: read failed: Input/output error
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 5
01:00.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
02:01.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
02:02.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
03:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 03)
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
04:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 03)
pcilib: sysfs_read_vpd: read failed: Input/output error
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
07:00.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
08:01.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
08:02.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
09:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 04)
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
0a:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 04)
pcilib: sysfs_read_vpd: read failed: Input/output error
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
0b:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5761 Gigabit Ethernet PCIe (rev 10)
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-

@jrgp
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jrgp commented Nov 25, 2020

Thanks for that output. What OS/system are you running lspci -vv on?

I checked a few machines I have and none of them give that LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- style output

@Saentist
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Saentist commented Nov 25, 2020 •
edited
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Tested and work on Ubuntu 14.04/16.04/18.04, Clear Linux and CentOS 7.

Some laptop's/mobile platforms do not report speed

Near same info can be taken from dmidecode but parser is more complicated.

@jrgp
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jrgp commented Nov 26, 2020

I've added speed detection/displaying for USB devices.

I've looked so far at 3 physical machines/servers (all ubuntu 16/18/20 LTSs) and several VMs (tried centos/opensuse/ubuntu) and I don't see the speed info. I must be looking somewhere wrong.

@Saentist
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Isn't better speed to be in some different font/background from "device count" number colour?

I use some AsRock/MSI/DELL/HP/iEi boards no problem to see speed of devices

HP_DL380p_gen8
# lspci -vv | grep -P "[0-9a-f]{2}:[0-9a-f]{2}\.[0-9a-f]|LnkSta:"
00:00.0 Host bridge: Intel Corporation Xeon E5/Core i7 DMI2 (rev 07)
                LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
00:01.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 1a (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
00:01.1 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 1b (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
00:02.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 2a (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 5GT/s, Width x4, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-
00:02.1 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 2b (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
00:02.2 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 2c (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 8GT/s, Width x8, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-
00:02.3 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 2d (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 8GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
00:03.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 3a in PCI Express Mode (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
00:03.1 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 3b (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
00:03.2 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 3c (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
00:03.3 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 3d (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
00:04.0 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 0 (rev 07)
00:04.1 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 1 (rev 07)
00:04.2 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 2 (rev 07)
00:04.3 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 3 (rev 07)
00:04.4 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 4 (rev 07)
00:04.5 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 5 (rev 07)
00:04.6 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 6 (rev 07)
00:04.7 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 7 (rev 07)
00:05.0 System peripheral: Intel Corporation Xeon E5/Core i7 Address Map, VTd_Misc, System Management (rev 07)
00:05.2 System peripheral: Intel Corporation Xeon E5/Core i7 Control Status and Global Errors (rev 07)
00:05.4 PIC: Intel Corporation Xeon E5/Core i7 I/O APIC (rev 07) (prog-if 20 [IO(X)-APIC])
00:11.0 PCI bridge: Intel Corporation C600/X79 series chipset PCI Express Virtual Root Port (rev 05) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
00:1a.0 USB controller: Intel Corporation C600/X79 series chipset USB2 Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI])
00:1c.0 PCI bridge: Intel Corporation C600/X79 series chipset PCI Express Root Port 1 (rev b5) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
00:1c.7 PCI bridge: Intel Corporation C600/X79 series chipset PCI Express Root Port 8 (rev b5) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
00:1d.0 USB controller: Intel Corporation C600/X79 series chipset USB2 Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI])
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a5) (prog-if 01 [Subtractive decode])
00:1f.0 ISA bridge: Intel Corporation C600/X79 series chipset LPC Controller (rev 05)
00:1f.2 IDE interface: Intel Corporation C600/X79 series chipset 4-Port SATA IDE Controller (rev 05) (prog-if 8f [PCI native mode controller, supports both channels switched to ISA compatibility mode, supports bus mastering])
01:00.0 System peripheral: Hewlett-Packard Company Integrated Lights-Out Standard Slave Instrumentation & System Support (rev 05)
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
01:00.1 VGA compatible controller: Matrox Electronics Systems Ltd. MGA G200EH (prog-if 00 [VGA controller])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
01:00.2 System peripheral: Hewlett-Packard Company Integrated Lights-Out Standard Management Processor Support and Messaging (rev 05)
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
01:00.4 USB controller: Hewlett-Packard Company Integrated Lights-Out Standard Virtual USB Controller (rev 02) (prog-if 00 [UHCI])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
02:00.0 RAID bus controller: Hewlett-Packard Company Smart Array Gen8 Controllers (rev 01)
                LnkSta: Speed 8GT/s, Width x8, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
03:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
                LnkSta: Speed 5GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
03:00.1 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
                LnkSta: Speed 5GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
03:00.2 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
                LnkSta: Speed 5GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
03:00.3 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
                LnkSta: Speed 5GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
04:00.0 Multimedia controller: Digital Devices GmbH Device 0008
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
07:00.0 Multimedia controller: Digital Devices GmbH Device 0008
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
0a:00.0 Multimedia controller: Digital Devices GmbH Device 0008
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
1f:08.0 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link 0 (rev 07)
1f:08.3 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link Reut 0 (rev 07)
1f:08.4 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link Reut 0 (rev 07)
1f:09.0 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link 1 (rev 07)
1f:09.3 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link Reut 1 (rev 07)
1f:09.4 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link Reut 1 (rev 07)
1f:0a.0 System peripheral: Intel Corporation Xeon E5/Core i7 Power Control Unit 0 (rev 07)
1f:0a.1 System peripheral: Intel Corporation Xeon E5/Core i7 Power Control Unit 1 (rev 07)
1f:0a.2 System peripheral: Intel Corporation Xeon E5/Core i7 Power Control Unit 2 (rev 07)
1f:0a.3 System peripheral: Intel Corporation Xeon E5/Core i7 Power Control Unit 3 (rev 07)
1f:0b.0 System peripheral: Intel Corporation Xeon E5/Core i7 Interrupt Control Registers (rev 07)
1f:0b.3 System peripheral: Intel Corporation Xeon E5/Core i7 Semaphore and Scratchpad Configuration Registers (rev 07)
1f:0c.0 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
1f:0c.1 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
1f:0c.2 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
1f:0c.3 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
1f:0c.6 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller System Address Decoder 0 (rev 07)
1f:0c.7 System peripheral: Intel Corporation Xeon E5/Core i7 System Address Decoder (rev 07)
1f:0d.0 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
1f:0d.1 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
1f:0d.2 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
1f:0d.3 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
1f:0d.6 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller System Address Decoder 1 (rev 07)
1f:0e.0 System peripheral: Intel Corporation Xeon E5/Core i7 Processor Home Agent (rev 07)
1f:0e.1 Performance counters: Intel Corporation Xeon E5/Core i7 Processor Home Agent Performance Monitoring (rev 07)
1f:0f.0 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Registers (rev 07)
1f:0f.1 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller RAS Registers (rev 07)
1f:0f.2 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Target Address Decoder 0 (rev 07)
1f:0f.3 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Target Address Decoder 1 (rev 07)
1f:0f.4 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Target Address Decoder 2 (rev 07)
1f:0f.5 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Target Address Decoder 3 (rev 07)
1f:0f.6 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Target Address Decoder 4 (rev 07)
1f:10.0 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Channel 0-3 Thermal Control 0 (rev 07)
1f:10.1 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Channel 0-3 Thermal Control 1 (rev 07)
1f:10.2 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller ERROR Registers 0 (rev 07)
1f:10.3 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller ERROR Registers 1 (rev 07)
1f:10.4 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Channel 0-3 Thermal Control 2 (rev 07)
1f:10.5 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Channel 0-3 Thermal Control 3 (rev 07)
1f:10.6 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller ERROR Registers 2 (rev 07)
1f:10.7 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller ERROR Registers 3 (rev 07)
1f:11.0 System peripheral: Intel Corporation Xeon E5/Core i7 DDRIO (rev 07)
1f:13.0 System peripheral: Intel Corporation Xeon E5/Core i7 R2PCIe (rev 07)
1f:13.1 Performance counters: Intel Corporation Xeon E5/Core i7 Ring to PCI Express Performance Monitor (rev 07)
1f:13.4 Performance counters: Intel Corporation Xeon E5/Core i7 QuickPath Interconnect Agent Ring Registers (rev 07)
1f:13.5 Performance counters: Intel Corporation Xeon E5/Core i7 Ring to QuickPath Interconnect Link 0 Performance Monitor (rev 07)
1f:13.6 System peripheral: Intel Corporation Xeon E5/Core i7 Ring to QuickPath Interconnect Link 1 Performance Monitor (rev 07)
20:00.0 PCI bridge: Intel Corporation Xeon E5/Core i7 DMI2 in PCI Express Mode (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
20:01.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 1a (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
20:01.1 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 1b (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
20:02.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 2a (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
20:02.1 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 2b (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
20:02.2 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 2c (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-
20:02.3 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 2d (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
20:03.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 3a in PCI Express Mode (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-
20:03.1 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 3b (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
20:03.2 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 3c (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
20:03.3 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 3d (rev 07) (prog-if 00 [Normal decode])
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
20:04.0 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 0 (rev 07)
20:04.1 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 1 (rev 07)
20:04.2 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 2 (rev 07)
20:04.3 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 3 (rev 07)
20:04.4 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 4 (rev 07)
20:04.5 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 5 (rev 07)
20:04.6 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 6 (rev 07)
20:04.7 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 7 (rev 07)
20:05.0 System peripheral: Intel Corporation Xeon E5/Core i7 Address Map, VTd_Misc, System Management (rev 07)
20:05.2 System peripheral: Intel Corporation Xeon E5/Core i7 Control Status and Global Errors (rev 07)
20:05.4 PIC: Intel Corporation Xeon E5/Core i7 I/O APIC (rev 07) (prog-if 20 [IO(X)-APIC])
21:00.0 Multimedia controller: Digital Devices GmbH Max
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
24:00.0 Multimedia controller: Digital Devices GmbH Cine V7
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
3f:08.0 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link 0 (rev 07)
3f:08.3 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link Reut 0 (rev 07)
3f:08.4 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link Reut 0 (rev 07)
3f:09.0 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link 1 (rev 07)
3f:09.3 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link Reut 1 (rev 07)
3f:09.4 System peripheral: Intel Corporation Xeon E5/Core i7 QPI Link Reut 1 (rev 07)
3f:0a.0 System peripheral: Intel Corporation Xeon E5/Core i7 Power Control Unit 0 (rev 07)
3f:0a.1 System peripheral: Intel Corporation Xeon E5/Core i7 Power Control Unit 1 (rev 07)
3f:0a.2 System peripheral: Intel Corporation Xeon E5/Core i7 Power Control Unit 2 (rev 07)
3f:0a.3 System peripheral: Intel Corporation Xeon E5/Core i7 Power Control Unit 3 (rev 07)
3f:0b.0 System peripheral: Intel Corporation Xeon E5/Core i7 Interrupt Control Registers (rev 07)
3f:0b.3 System peripheral: Intel Corporation Xeon E5/Core i7 Semaphore and Scratchpad Configuration Registers (rev 07)
3f:0c.0 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
3f:0c.1 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
3f:0c.2 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
3f:0c.3 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
3f:0c.6 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller System Address Decoder 0 (rev 07)
3f:0c.7 System peripheral: Intel Corporation Xeon E5/Core i7 System Address Decoder (rev 07)
3f:0d.0 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
3f:0d.1 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
3f:0d.2 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
3f:0d.3 System peripheral: Intel Corporation Xeon E5/Core i7 Unicast Register 0 (rev 07)
3f:0d.6 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller System Address Decoder 1 (rev 07)
3f:0e.0 System peripheral: Intel Corporation Xeon E5/Core i7 Processor Home Agent (rev 07)
3f:0e.1 Performance counters: Intel Corporation Xeon E5/Core i7 Processor Home Agent Performance Monitoring (rev 07)
3f:0f.0 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Registers (rev 07)
3f:0f.1 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller RAS Registers (rev 07)
3f:0f.2 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Target Address Decoder 0 (rev 07)
3f:0f.3 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Target Address Decoder 1 (rev 07)
3f:0f.4 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Target Address Decoder 2 (rev 07)
3f:0f.5 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Target Address Decoder 3 (rev 07)
3f:0f.6 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Target Address Decoder 4 (rev 07)
3f:10.0 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Channel 0-3 Thermal Control 0 (rev 07)
3f:10.1 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Channel 0-3 Thermal Control 1 (rev 07)
3f:10.2 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller ERROR Registers 0 (rev 07)
3f:10.3 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller ERROR Registers 1 (rev 07)
3f:10.4 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Channel 0-3 Thermal Control 2 (rev 07)
3f:10.5 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller Channel 0-3 Thermal Control 3 (rev 07)
3f:10.6 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller ERROR Registers 2 (rev 07)
3f:10.7 System peripheral: Intel Corporation Xeon E5/Core i7 Integrated Memory Controller ERROR Registers 3 (rev 07)
3f:11.0 System peripheral: Intel Corporation Xeon E5/Core i7 DDRIO (rev 07)
3f:13.0 System peripheral: Intel Corporation Xeon E5/Core i7 R2PCIe (rev 07)
3f:13.1 Performance counters: Intel Corporation Xeon E5/Core i7 Ring to PCI Express Performance Monitor (rev 07)
3f:13.4 Performance counters: Intel Corporation Xeon E5/Core i7 QuickPath Interconnect Agent Ring Registers (rev 07)
3f:13.5 Performance counters: Intel Corporation Xeon E5/Core i7 Ring to QuickPath Interconnect Link 0 Performance Monitor (rev 07)
3f:13.6 System peripheral: Intel Corporation Xeon E5/Core i7 Ring to QuickPath Interconnect Link 1 Performance Monitor (rev 07)

@jrgp
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jrgp commented Nov 27, 2020

I just looked at lspci -vv on an old Dell I have, and I do see the LnkSta lines with Speed reports. However, I'm seeing several of these lines per each device, so I am unsure of an accurate way of representing this information without converting the Devices table to a tree-type display.

00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02) (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 29
        Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
        I/O behind bridge: 0000f000-0000ffff
        Memory behind bridge: df100000-df2fffff
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
        BridgeCtl: Parity+ SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: [40] Express (v1) Root Port (Slot-), MSI 00
                DevCap: MaxPayload 128 bytes, PhantFunc 0
                        ExtTag- RBE+
                DevCtl: Report errors: Correctable- Non-Fatal+ Fatal+ Unsupported-
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
                        MaxPayload 128 bytes, MaxReadReq 128 bytes
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
                LnkCap: Port #1, Speed 2.5GT/s, Width x4, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us
                        ClockPM- Surprise- LLActRep+ BwNot- ASPMOptComp-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x4, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-
                RootCtl: ErrCorrectable- ErrNon-Fatal+ ErrFatal+ PMEIntEna+ CRSVisible-
                RootCap: CRSVisible-
                RootSta: PME ReqID 0000, PMEStatus- PMEPending-
        Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
                Address: fee20000  Data: 4042
        Capabilities: [90] Subsystem: Dell 82801I (ICH9 Family) PCI Express Port 1
        Capabilities: [a0] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [100 v1] Virtual Channel
                Caps:   LPEVC=0 RefClk=100ns PATEntryBits=1
                Arb:    Fixed+ WRR32- WRR64- WRR128-
                Ctrl:   ArbSelect=Fixed
                Status: InProgress-
                VC0:    Caps:   PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
                        Arb:    Fixed+ WRR32- WRR64- WRR128- TWRR128- WRR256-
                        Ctrl:   Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
                        Status: NegoPending- InProgress-
        Capabilities: [180 v1] Root Complex Link
                Desc:   PortNumber=01 ComponentID=02 EltType=Config
                Link0:  Desc:   TargetPort=00 TargetComponent=02 AssocRCRB- LinkType=MemMapped LinkValid+
                        Addr:   00000000feda8000
        Kernel driver in use: pcieport
        Kernel modules: shpchp

I'm also not sure how useful it is to know the speeds of internal PCI devices. I think this info would be most useful in the context of network interfaces, and we do display speeds for those.

@Saentist
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From your example

                LnkCap: Port #1, Speed 2.5GT/s, Width x4, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us
                LnkSta: Speed 2.5GT/s, Width x4, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-

LnkCap represent phisical speed of port
LnkSta represent speed used by device on port

on some motherboards there are mechanical x16 port but it is just x8 physically, x8 with is x4 and 1x in x4
I see lot of genius with put video card on bottom x16 slot with is always x8 and GPU work very slowly. in games and transcoding.

similar as nvtop speed reporting

nvtop

@Vasupesii
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This is continuing from #113

ex:

lspci -vv | grep -E 'PCI bridge|LnkCap|LnkSta'
00:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Root Port (prog-if 00 [Normal decode])
                LnkCap: Port #1, Speed 5GT/s, Width x4, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge (rev 40) (prog-if 01 [Subtractive decode])
00:15.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 0) (prog-if 00 [Normal decode])
                LnkCap: Port #247, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
                LnkSta: Speed unknown, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
        Capabilities: [b0] Subsystem: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 0)
00:15.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 1) (prog-if 00 [Normal decode])
                LnkCap: Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
        Capabilities: [b0] Subsystem: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 1)
00:15.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 2) (prog-if 00 [Normal decode])
                LnkCap: Port #2, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
        Capabilities: [b0] Subsystem: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 2)
pcilib: sysfs_read_vpd: read failed: Input/output error
01:00.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #0, Speed 5GT/s, Width x2, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
02:01.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #1, Speed 2.5GT/s, Width x1, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
02:02.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #2, Speed 2.5GT/s, Width x1, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <4us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
pcilib: sysfs_read_vpd: read failed: Input/output error
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <4us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
07:00.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #0, Speed 5GT/s, Width x2, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
08:01.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #1, Speed 2.5GT/s, Width x1, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
08:02.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05) (prog-if 00 [Normal decode])
                LnkCap: Port #2, Speed 2.5GT/s, Width x1, ASPM not supported, Exit Latency L0s <512ns, L1 <1us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <4us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
pcilib: sysfs_read_vpd: read failed: Input/output error
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <4us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <64us
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-

and we see Speed and Width of pci device's and port's

Hi, is this Issue resolved ?

@Vasupesii
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Vasupesii commented May 20, 2023 •
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in my system , i could not able to see the speed and width of Intel xenon DMI2
00:00.0 Host bridge: Intel Corporation Xeon E5/Core i7 DMI2 (rev 07)
LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-

i want DMI2 to display the speed as well....could you please suggest me the solution.

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@jrgp @Saentist @Vasupesii