On Mon, Apr 19, 2010 at 12:45:44PM -0700, Nishank wrote: > Hi, > > I'm trying understand PCIe hot-plugging and surprise removal as > supported in kernel. I am using a board having Ibex Peak. Can > someone please help me understand - > 1. Which is the relevant driver for pcie hp for this board? (looks > like pciehp but I see others as well - shpchp) Depends on the hardware, what does yours have on it? > 2. Is there a specific user-space utility for safe removal of PCIe? > Seems like it should be something like - quiesce, unbind, power-off. You can do it with a simple one line bash script: echo 0 > /sys/bus/pci/slot/SLOT_NUMBER/power Or you can use the very old pcihpview GUI tool if you really like those types of things. Or you can just press the button on the back of your machine that controls the power to the slot. > 3. Is there any existing driver which supports PCIe surprise > removal? Also, when pcie slot has been powered off (as in > handle_suprise_event() in pciehp), how is the driver notified about > it? The pciehp driver handles pcie device removal, assuming that is what is controlling the hardware. It is notified through the PCIe standard way (go read the PCI spec for the boring details...) thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
