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# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$
# Eblit with information/warnings for IP30 (Octane) users.
#
# If you need to add whitespace for formatting in 'einfo', 'ewarn', or 'eerror', use
# \040 for a space instead of the standard space. These functions will strip
# redundant white space.
show_ip30_info() {
echo -e ""
eerror "Things that DON'T work:"
eerror "\t- Do not use CONFIG_SLUB, otherwise, you'll get errors when booting"
eerror "\t\040\040regarding duplicate /sys/kernel/slab/* entries in sysfs."
eerror "\t- Impact (MGRAS) Xorg driver no longer functions due to severe bitrot."
eerror "\t- Octane is limited to a maximum of 2GB of memory right now due to a"
eerror "\t\040\040hardware quirk in the BRIDGE PCI chip that limits BRIDGE DMA"
eerror "\t\040\040addresses to 31-bits when converted into physical addresses."
eerror "\t\040\040Patches that attempt to fix the issue are highly welcome."
echo -e ""
ewarn "Things that might work, but have problems, or are unknown:"
ewarn "\t- CONFIG_TRANSPARENT_HUGEPAGE should work now, but there may still be"
ewarn "\t\040\040intermittent issues. Additionally, CONFIG_HUGETLBFS must also be"
ewarn "\t\040\040selected for hugepages to work. If use of this feature continues"
ewarn "\t\040\040to trigger random Instruction Bus Errors (IBEs), then it is best to"
ewarn "\t\040\040disable the functionality and perform a cold reset of the machine"
ewarn "\t\040\040after powering it down for at least 30 seconds."
ewarn "\t- Serial support on the Octane uses a very basic UART driver that drives"
ewarn "\t\040\040the 16550A chip on the IOC3 directly. It does not use interrupts,"
ewarn "\t\040\040only a polling routine on a timer, which makes it slow and CPU-"
ewarn "\t\040\040intensive. The baud rate is limited to no more than 38.4kbps on"
ewarn "\t\040\040this driver. Patches for getting the Altix IOC3 serial driver to"
ewarn "\t\040\040work (which uses DMA and supports faster baud rates) are welcome."
ewarn "\t- UHCI Cards are known to have issues, but should still function."
ewarn "\t\040\040This issue primarily manifests itself when using pl2303 USB->Serial"
ewarn "\t\040\040adapters."
ewarn "\t- MENET boards appear to have the four ethernet ports detected, however"
ewarn "\t\040\040the six serial ports don't appear to get picked up by the IOC3"
ewarn "\t\040\040UART driver. The NIC part number is also not read correctly"
ewarn "\t\040\040from the four Number-In-a-Cans. Additional testing would be"
ewarn "\t\040\040appreciated and patches welcome."
ewarn "\t- Other XIO-based devices, like various Impact addons, remain untested"
ewarn "\t\040\040and are not guaranteed to work. This applies to various digital"
ewarn "\t\040\040video conversion boards as well."
echo -e ""
einfo "Things that DO work:"
einfo "\t- SMP works again, celebrate!"
einfo "\t- Impact (MGRAS) console only."
einfo "\t- VPro (Odyssey) console only (no X driver exists yet)."
einfo "\t- PCI Card Cages should work for many devices, except certain types like"
einfo "\t\040\040PCI-to-PCI bridges (USB hubs, USB flash card readers for example)."
einfo "\t- SCSI, RTC, basic PCI, IOC3 Ethernet, keyboard, and mouse. Please"
einfo "\t\040\040report any problems with these devices."
echo -e ""
}
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