Re: [Qemu-devel] Question about hcd-ohci and address_space_translate

[Paolo Bonzini]

Il 30/05/2014 00:33, BALATON Zoltan ha scritto:

usb-ohci: pci-ohci: USB Operational
Unassigned mem read 0000000007c9ae00
Unassigned mem read 0000000007c9ae04
[...]
Unassigned mem read 0000000007c9ae84
usb-ohci: HCCA read error at 7c9ae00
ohci_die: DMA error

The read happens through ohci_read_hcca which eventually calls
phys_page_find that returns &sections[PHYS_SECTION_UNASSIGNED] here:

Are you setting the bus master enable bit in the command register?

Paolo