Hello, Volker. Volker Armin Hemmann wrote:
In short, no changes at all.Thanks for confirming. Peer, Kuan. Volker is reporting detection problems on MCP65 AHCI. The followings are what we've discovered till now. 1. When the controller is put into non-raid mode in BIOS * If softreset is used, either the softreset itself or IDENTIFY following it times out once. On retrial, it works fine. It doesn't matter whether the SRST is issued by itself or as follow-up-srst after hardreset. Using only hardreset works fine. * The controller doesn't indicate MSI capability and MSI isn't used by default. 2. When the controller is put into ahci mode in BIOS * SRST works fine. * The controller indicates MSI capability but MSI doesn't work properly resulting in IRQ delivery failure. Adding intx_disable_bug quirk doesn't help. I've performed similar test on MCP67 and everything worked fine on it. Both problems (SRST and MSI) can be worked around but I need more information to work around those. * Which chips are affected? Are there proper fixes? * For the MSI problem, is it system wide problem or local to the ahci controller?I rebooted with non-raid set, without pci=nomsi this is cat /proc/interrupts: CPU0 CPU1 0: 57 1 IO-APIC-edge timer 1: 0 81 IO-APIC-edge i8042 8: 0 1 IO-APIC-edge rtc 9: 0 1 IO-APIC-fasteoi acpi 12: 0 3 IO-APIC-edge i8042 17: 2 2868 IO-APIC-fasteoi nvidia 18: 0 0 IO-APIC-fasteoi EMU10K1 22: 4 745 IO-APIC-fasteoi ehci_hcd:usb1 314: 0 158 PCI-MSI-edge eth0 315: 7 12769 PCI-MSI-edge ahci as you can see, only the sata controller and the network uses msi. And networking works - or I wouldn't be able to send you this mail.
I guess the ahci controller works too. This is getting confusing, so MSI doesn't work iff the controller is configured as ahci in BIOS?
I will reboot from systemresucecd later today and post some results with ahci-mode set, no nomsi. Just can't try patches that way.
Is sytemrescuecd using the same kernel? Otherwise, it will only add more to the confusion.
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