[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Radeon HD5770 and VGA passthrough (vBAR=pBAR not enough?)
On 12.07.2010 12:24, FeepingCreature wrote: > Hi, > > I've been trying these last few days to get primary VGA passthrough to > work on my ATI Radeon HD5770 card. > > I'm running hg head with the secondary patches applied (external > graphics BIOS, vbar=pbar), and in VGA mode this works fine. > > The problem is that ati2dvag crashes whenever it tries to switch to any > driver-run graphics mode. > > ------ win xp starts its vga-based boot screen. All is well. > (XEN) domctl.c:1002:d0 memory_map:remove: gfn=c0000 mfn=c0000 nr_mfns=10000 > (XEN) domctl.c:1002:d0 memory_map:remove: gfn=d0020 mfn=d0020 nr_mfns=20 > (XEN) domctl.c:1072:d0 ioport_map:remove f_gport=d000 f_mport=d000 np=100 > (XEN) domctl.c:992:d0 memory_map:add: gfn=c0000 mfn=c0000 nr_mfns=10000 > (XEN) domctl.c:992:d0 memory_map:add: gfn=d0020 mfn=d0020 nr_mfns=20 > (XEN) domctl.c:1048:d0 ioport_map:add f_gport=d000 f_mport=d000 np=100 > (XEN) domctl.c:1002:d0 memory_map:remove: gfn=f1000 mfn=d0040 nr_mfns=4 > (XEN) domctl.c:992:d0 memory_map:add: gfn=f1000 mfn=d0040 nr_mfns=4 > (XEN) grant_table.c:1121:d8 Expanding dom (8) grant table from (4) to > (32) frames. > (XEN) irq.c:309: Dom8 callback via changed to GSI 28 > ------ driver activation happens here > (XEN) domctl.c:1002:d0 memory_map:remove: gfn=c0000 mfn=c0000 nr_mfns=10000 > (XEN) domctl.c:1002:d0 memory_map:remove: gfn=d0020 mfn=d0020 nr_mfns=20 > (XEN) domctl.c:1072:d0 ioport_map:remove f_gport=d000 f_mport=d000 np=100 > -- note the different addresses! > (XEN) domctl.c:992:d0 memory_map:add: gfn=e0000 mfn=c0000 nr_mfns=10000 > (XEN) domctl.c:992:d0 memory_map:add: gfn=fbfe0 mfn=d0020 nr_mfns=20 > (XEN) domctl.c:1048:d0 ioport_map:add f_gport=d000 f_mport=d000 np=100 > (XEN) domctl.c:1002:d0 memory_map:remove: gfn=f1000 mfn=d0040 nr_mfns=4 > (XEN) domctl.c:992:d0 memory_map:add: gfn=f1000 mfn=d0040 nr_mfns=4 > > So the graphics card driver evidently tries to allocate its resources > somewhere else than where they start out as. If I boot into VGA mode, > the resources tab of the card confirms this. > > I have a sneaking suspicion that this breaks vBAR=pBAR, but I don't know > how to verify or fix it. I believe that the correct thing to do might be > to reallocate the graphics card's resources at the new address windows > gives me, but I have no idea how to go about that. Any help would be > appreciated. > Okay, that wasn't it - I updated the DSDT to use the C0000-CFFFF range instead of E0000-EFFFF, which allowed the graphics driver to keep using the original areas - color depth went up from 4-bit to 8-bit, but aside from that ati2dvag still dies on resolution change. I've given up at this point; will try again in a few months. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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