setpci在Window下怎么用

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主题:setpci在Window下怎么用
楼主|klglfgljl|2020-03-11 10:41:46|展开
   想把计算机上（Win10,64bit）的USB3.0从协议上修改为USB2.0，网上查说用setpci这个命令可以修改。
   下载了相应的软件，用lspci查到USB controller的device是8086:02ed，模仿着用
   setpci -H1 -d 8086:02ed d8.1=0提示Invalid width "1"，哪位大侠给看看应该怎么操作？

   参考说明的网址：https://blog.csdn.net/zhangzxing/article/details/44857391?utm_source=blogxgwz5

lspci -nn的结果：
00:00.0 Host bridge [0600]: Intel Corporation Device [8086:9b61] (rev 0c)
00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:9b41] (rev 02)
00:04.0 Signal processing controller [1180]: Intel Corporation Skylake Processor Thermal Subsystem [8086:1903] (rev 0c)
00:08.0 System peripheral [0880]: Intel Corporation Skylake Gaussian Mixture Model [8086:1911]
00:12.0 Signal processing controller [1180]: Intel Corporation Device [8086:02f9]
00:14.0 USB controller [0c03]: Intel Corporation Device [8086:02ed]
00:14.2 RAM memory [0500]: Intel Corporation Device [8086:02ef]
00:15.0 Serial bus controller [0c80]: Intel Corporation Device [8086:02e8]
00:16.0 Communication controller [0780]: Intel Corporation Device [8086:02e0]
00:17.0 RAID bus controller [0104]: Intel Corporation 82801 Mobile SATA Controller [RAID mode] [8086:282a]
00:1c.0 PCI bridge [0604]: Intel Corporation Device [8086:02bc] (rev f0)
00:1d.0 PCI bridge [0604]: Intel Corporation Device [8086:02b0] (rev f0)
00:1d.1 PCI bridge [0604]: Intel Corporation Device [8086:02b1] (rev f0)
00:1d.4 PCI bridge [0604]: Intel Corporation Device [8086:02b4] (rev f0)
00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:0284]
00:1f.3 Audio device [0403]: Intel Corporation Device [8086:02c8]
00:1f.4 SMBus [0c05]: Intel Corporation Device [8086:02a3]
00:1f.5 Serial bus controller [0c80]: Intel Corporation Device [8086:02a4]
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:c821]
04:00.0 Non-Volatile memory controller [0108]: Sandisk Corp Device [15b7:5003] (rev 01)
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2楼|klglfgljl|2020-03-18 10:51:06|展开
谢谢

【在 ArchLinux (a lightweight and flexible distribution) 的大作中提到: 】
: 看了一下那篇博客，其实就是修改xHCI设备的PCI配置空间。它的作用是让 PCH 的 USB 3.0 端口的 USB 3.0 特性关掉。注意这个配置重启后就失效，一般来说应该由固件来配置。
: 你的命令里面应该是 d8.l, 最后那个是字母 l 而不是数字 1, 它表示写入的配置寄存器是 32 位的。man page 里面写了：
: To choose how many bytes (1, 2, or 4) should be transferred, you should append a width specifier .B, .W, or .L. The width can be omitted if you are referring to a register by its name and the width of the register is well known.
: ...................
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