Opened 8 years ago

Last modified 5 years ago

#13046 assigned bug

Hide downstream PCI devices when not present — at Version 2

Reported by: kallisti5 Owned by: axeld
Priority: normal Milestone: Unscheduled
Component: System/Kernel Version: R1/Development
Keywords: PCI hotplug Cc:
Blocked By: Blocking: #12885
Platform: All

Description (last modified by kallisti5)

It seems newer skylake systems can have "hidden" PCI devices. Haiku currently iterates through all PCI devices resulting in drivers (such as XHCI) attempting to access invalid PCI devices (memory spaces return all 0xffffffff)

Attached is the lspci on linux from a small dell dongle plugged and unplugged.

Haiku sees the PCI bus like the plugged output.

Overview:

Linux, no USB C dongles: 

$ lspci -tvnn
-[0000:00]-+-00.0  Intel Corporation Skylake Host Bridge/DRAM Registers [8086:1904]
           +-02.0  Intel Corporation HD Graphics 520 [8086:1916]
           +-04.0  Intel Corporation Skylake Processor Thermal Subsystem [8086:1903]
           +-14.0  Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller [8086:9d2f]
           +-14.2  Intel Corporation Sunrise Point-LP Thermal subsystem [8086:9d31]
           +-15.0  Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 [8086:9d60]
           +-15.1  Intel Corporation Sunrise Point-LP Serial IO I2C Controller #1 [8086:9d61]
           +-16.0  Intel Corporation Sunrise Point-LP CSME HECI #1 [8086:9d3a]
           +-17.0  Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] [8086:9d03]
           +-1c.0-[01-39]--
           +-1c.4-[3a]----00.0  Intel Corporation Wireless 7265 [8086:095a]
           +-1c.5-[3b]----00.0  Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a]
           +-1f.0  Intel Corporation Sunrise Point-LP LPC Controller [8086:9d48]
           +-1f.2  Intel Corporation Sunrise Point-LP PMC [8086:9d21]
           +-1f.3  Intel Corporation Sunrise Point-LP HD Audio [8086:9d70]
           \-1f.4  Intel Corporation Sunrise Point-LP SMBus [8086:9d23]

Linux, USB C dongle plugged in: 

-[0000:00]-+-00.0  Intel Corporation Skylake Host Bridge/DRAM Registers [8086:1904]
           +-02.0  Intel Corporation HD Graphics 520 [8086:1916]
           +-04.0  Intel Corporation Skylake Processor Thermal Subsystem [8086:1903]
           +-14.0  Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller [8086:9d2f]
           +-14.2  Intel Corporation Sunrise Point-LP Thermal subsystem [8086:9d31]
           +-15.0  Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 [8086:9d60]
           +-15.1  Intel Corporation Sunrise Point-LP Serial IO I2C Controller #1 [8086:9d61]
           +-16.0  Intel Corporation Sunrise Point-LP CSME HECI #1 [8086:9d3a]
           +-17.0  Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] [8086:9d03]
           +-1c.0-[01-39]----00.0-[02-39]--+-00.0-[03]--
           |                               +-01.0-[04-38]--
           |                               \-02.0-[39]----00.0  Intel Corporation DSL6340 USB 3.1 Controller [Alpine Ridge] [8086:15b5]
           +-1c.4-[3a]----00.0  Intel Corporation Wireless 7265 [8086:095a]
           +-1c.5-[3b]----00.0  Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a]
           +-1f.0  Intel Corporation Sunrise Point-LP LPC Controller [8086:9d48]
           +-1f.2  Intel Corporation Sunrise Point-LP PMC [8086:9d21]
           +-1f.3  Intel Corporation Sunrise Point-LP HD Audio [8086:9d70]
           \-1f.4  Intel Corporation Sunrise Point-LP SMBus [8086:9d23]

Change History (4)

by kallisti5, 8 years ago

Attachment: lspci-unplugged.txt​ added

USB C Dongle unattached - Linux

by kallisti5, 8 years ago

Attachment: lspci-plugged.txt​ added

USB C Dongle attached - Linux

comment:1 by kallisti5, 8 years ago

Blocking: 12885 added

comment:2 by kallisti5, 8 years ago

Description: modified (diff)
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