On Thu, 2018-10-11 at 12:45 +0100, Richard W.M. Jones wrote: > On Thu, Oct 11, 2018 at 09:01:14AM +0100, Richard W.M. Jones wrote: > > Here are the settings we currently do NOT have in my RV kernel: > > > > CONFIG_HOTPLUG_PCI_PCIE=y > > CONFIG_HOTPLUG_PCI=y > > CONFIG_MEDIA_PCI_SUPPORT=y > > CONFIG_PCI_ATS=y > > CONFIG_PCI_DEBUG=y > > CONFIG_PCIEAER=y > > CONFIG_PCIEASPM_DEFAULT=y > > CONFIG_PCIEASPM=y > > CONFIG_PCI_ECAM=y > > CONFIG_PCIE_MICROSEMI=y > > CONFIG_PCI_ENDPOINT=y > > CONFIG_PCIEPORTBUS=y > > CONFIG_PCI_HOST_COMMON=y > > CONFIG_PCI_HOST_GENERIC=y > > CONFIG_PCI_IOV=y > > CONFIG_PCI_PASID=y > > CONFIG_PCI_PRI=y > > CONFIG_PCI_SW_SWITCHTEC=y > > CONFIG_USB_BDC_PCI=y > > > > If you're happy with it, I can add all of those. If there are any > > which shouldn't be added let me know. > > I didn't see an answer but in any case I have tried to enable all of > these. The only settings which could not be enabled were: > > CONFIG_MEDIA_PCI_SUPPORT=y > CONFIG_PCI_ECAM=y > CONFIG_PCI_HOST_COMMON=y > CONFIG_PCI_HOST_GENERIC=y
I believe these last two are the ones we really miss. I could be wrong though - as you know, I've made a few guesses that didn't quite pan out already :) > CONFIG_USB_BDC_PCI=y > > Probably missing deps or missing arch support. I didn't track them > down yet, but note I'm still using kernel 4.15. > > https://github.com/rwmjones/fedora-riscv-kernel/commits/master We talked about this on IRC a while ago: assuming my guess above is correct, you would need to backport https://github.com/torvalds/linux/commit/51bc085d6454214b02dba7a259ee1fdfe3ee8d9f because that's the one that makes PCI_HOST_GENERIC available to non-ARM architectures. > In any case a new kernel/bbl has been built, available in the usual > place: > > https://fedorapeople.org/groups/risc-v/disk-images/ I gave it a spin: it doesn't work :( -- Andrea Bolognani / Red Hat / Virtualization
