PCI 命令解析

概述

uefi shell 下显示PCI设备列表，或PCI功能配置空间和PCIe扩展配置空间。

使用方法

pci [Bus Dev [Func] [-s Seg] [-i | [-ec ID]]]

命令选项

Bus 总线号(十六进制数)

Dev 设备号(十六进制数)

Func 函数数(十六进制数)

-s 指定可选段号Seg(十六进制数)

-i 信息解读

-ec 显示指定的PCIe扩展能力ID的详细解释(十六进制数)

描述

此命令将显示系统中找到的所有PCI设备。它还可以根据指定的总线(bus)、设备(Dev)和函数(Func)号显示PCI设备的配置空间。如果未指定函数号，则默认为0。-i选项用于显示指定PCI设备的详细信息。将对设备的PCI配置空间和PCIe扩展配置空间(如果可用)进行详细解释。

ec ID选项用于显示特定PCIe扩展功能ID的详细信息。

例子

显示系统中所有PCI设备:

Shell> PCI

Seg Bus Dev Func

--- --- --- ----

00 00 00 00 ==> Bridge Device - Host/PCI bridge

Vendor 8086 Device 1130 Prog Interface 0

00 00 01 00 ==> Bridge Device - PCI/PCI bridge

Vendor 8086 Device 1131 Prog Interface 0

00 00 1E 00 ==> Bridge Device - PCI/PCI bridge

Vendor 8086 Device 244E Prog Interface 0

00 00 1F 00 ==> Bridge Device - PCI/ISA bridge

Vendor 8086 Device 2440 Prog Interface 0

00 00 1F 01 ==> Mass Storage Controller - IDE controller

Vendor 8086 Device 244B Prog Interface 80

00 00 1F 02 ==> Serial Bus Controllers - USB

Vendor 8086 Device 2442 Prog Interface 0

00 00 1F 03 ==> Serial Bus Controllers - System Management Bus

Vendor 8086 Device 2443 Prog Interface 0

00 00 1F 04 ==> Serial Bus Controllers - USB

Vendor 8086 Device 2444 Prog Interface 0

00 00 1F 05 ==> Multimedia Device - Audio device

Vendor 8086 Device 2445 Prog Interface 0

00 00 1F 06 ==> Simple Communications Controllers - Modem

Vendor 8086 Device 2446 Prog Interface 0

00 01 00 00 ==> Display Controller - VGA/8514 controller

Vendor 1002 Device 5246 Prog Interface 0

00 02 07 00 ==> Multimedia Device - Audio device

Vendor 1274 Device 1371 Prog Interface 0

00 02 0A 00 ==> Bridge Device - CardBus bridge

Vendor 1180 Device 0476 Prog Interface 0

00 02 0A 01 ==> Bridge Device - CardBus bridge

Vendor 1180 Device 0476 Prog Interface 0

要显示总线0、设备0、函数0的配置空间:

Shell> PCI 00 00 00 -i

PCI Segment 00 Bus 00 Device 00 Func 00

00000000: 86 80 30 11 06 00 90 20-02 00 00 06 00 00 00 00 *..0.... ........*

00000010: 08 00 00 20 00 00 00 00-00 00 00 00 00 00 00 00 *... ............*

00000020: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 *................*

00000030: 00 00 00 00 88 00 00 00-00 00 00 00 00 00 00 00 *................*

00000040: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 *................*

00000050: 50 00 09 38 00 00 00 00-00 00 00 00 00 00 00 00 *P..8............*

00000060: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 *................*

00000070: 00 00 18 00 00 00 00 00-00 00 00 00 00 00 00 00 *................*

00000080: DE 2C CF 00 00 00 00 00-09 A0 04 F1 00 00 00 00 *.,..............*

00000090: 00 00 D6 FF FE FF 00 00-33 80 33 80 85 84 C4 00 *........3.3.....*

000000A0: 02 00 20 00 07 02 00 1F-00 00 00 00 00 00 00 00 *.. .............*

000000B0: 00 00 00 00 30 00 00 00-00 00 00 00 00 00 08 00 *....0...........*

000000C0: 00 00 00 00 00 00 00 00-00 08 00 00 00 00 00 00 *................*

000000D0: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 *................*

000000E0: 00 00 00 00 00 00 00 00-00 00 90 14 00 00 00 00 *................*

000000F0: 00 00 00 00 74 F8 00 00-00 00 00 00 08 00 00 00 *....t...........*

Vendor ID(0): 8086 Device ID(2): 1130

Command(4): 0006

(00)I/O space access enabled: 0 (01)Memory space access enabled: 1

(02)Behave as bus master: 1 (03)Monitor special cycle enabled: 0

(04)Mem Write & Invalidate enabled: 0 (05)Palette snooping is enabled: 0

(06)Assert PERR# when parity error: 0 (07)Do address/data stepping: 0

(08)SERR# driver enabled: 0 (09)Fast back-to-back transact...: 0

Status(6): 2090

(04)New Capabilities linked list: 1 (05)66MHz Capable: 0

(07)Fast Back-to-Back Capable: 1 (08)Master Data Parity Error: 0

(09)DEVSEL timing: Fast (11)Signaled Target Abort: 0

(12)Received Target Abort: 0 (13)Received Master Abort: 1

(14)Signaled System Error: 0 (15)Detected Parity Error: 0

Revision ID(8): 02 BIST(0F): Incapable

Cache Line Size(C): 00 Latency Timer(D): 00

Header Type(0E): 0, Single function, PCI device

Class: Bridge Device - Host/PCI bridge -

Base Address Registers(10):

Start Type Space Prefetchable? Size Limit

----------------------------------------------------------------

20000000 Mem 32 bits YES 04000000 24000000

----------------------------------------------------------------

No Expansion ROM(30)

Cardbus CIS ptr(28): 00000000

Sub VendorID(2C): 0000 Subsystem ID(2E): 0000

Capabilities Ptr(34): 88

Interrupt Line(3C): 00 Interrupt Pin(3D): 00

Min_Gnt(3E): 00 Max_Lat(3F): 00

要显示段0、总线0、设备0、函数0的配置空间:

Shell> PCI 00 00 00 -s 0