https://bugs.freedesktop.org/show_bug.cgi?id=41265 --- Comment #20 from Alexander E. Patrakov <patrakov@xxxxxxxxx> 2012-08-04 16:14:09 UTC --- I think that the card does have its BIOS, and the problem is really related to a misconfigured PCI bridge. Please take this with a grain of salt, as I am not a kernel hacker. Some snippets from my dmesg that IMHO confirm this: (just an interesting line, I didn't try this suggestion) [ 0.701044] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug (here is the Radeon card) [ 0.722007] pci 0000:16:00.0: [1002:6740] type 00 class 0x030000 [ 0.722073] pci 0000:16:00.0: reg 10: [mem 0xb0000000-0xbfffffff 64bit pref] [ 0.722125] pci 0000:16:00.0: reg 18: [mem 0xc0200000-0xc021ffff 64bit] [ 0.722159] pci 0000:16:00.0: reg 20: [io 0x5000-0x50ff] [ 0.722226] pci 0000:16:00.0: reg 30: [mem 0xfffe0000-0xffffffff pref] [ 0.722395] pci 0000:16:00.0: supports D1 D2 (and this is the bridge before it) [ 0.723054] pci 0000:15:03.0: PCI bridge to [bus 16-16] [ 0.723124] pci 0000:15:03.0: bridge window [io 0x5000-0x5fff] [ 0.723132] pci 0000:15:03.0: bridge window [mem 0xc0200000-0xc02fffff] [ 0.723149] pci 0000:15:03.0: bridge window [mem 0xb0000000-0xbfffffff 64bit pref] (this is vgaarb) [ 0.743085] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none [ 0.743186] vgaarb: device added: PCI:0000:16:00.0,decodes=io+mem,owns=none,locks=none [ 0.743265] vgaarb: loaded [ 0.743313] vgaarb: bridge control possible 0000:16:00.0 [ 0.743367] vgaarb: no bridge control possible 0000:00:02.0 (here the kernel complains about the bug that ultimately leads to unreadability of the ROM) [ 0.773497] pci 0000:16:00.0: no compatible bridge window for [mem 0xfffe0000-0xffffffff pref] (and tries to fix it up? still not good enough) [ 0.775668] pci 0000:16:00.0: BAR 6: assigned [mem 0xc0240000-0xc025ffff pref] [ 0.775745] pci 0000:15:03.0: PCI bridge to [bus 16-16] [ 0.775805] pci 0000:15:03.0: bridge window [io 0x5000-0x5fff] [ 0.775872] pci 0000:15:03.0: bridge window [mem 0xc0200000-0xc02fffff] [ 0.775937] pci 0000:15:03.0: bridge window [mem 0xb0000000-0xbfffffff 64bit pref] (so we still end up with lost resources) [ 0.778723] pci_bus 0000:15: resource 0 [io 0x3000-0x5fff] [ 0.778725] pci_bus 0000:15: resource 1 [mem 0xb0000000-0xc02fffff] [ 0.778726] pci_bus 0000:15: resource 2 [mem 0xd4400000-0xd44fffff 64bit pref] [ 0.778728] pci_bus 0000:16: resource 0 [io 0x5000-0x5fff] [ 0.778730] pci_bus 0000:16: resource 1 [mem 0xc0200000-0xc02fffff] [ 0.778731] pci_bus 0000:16: resource 2 [mem 0xb0000000-0xbfffffff 64bit pref] So the main question is: why doesn't vgaarb (or who really has this job) reconfigure the bridge so that radeon can read the ROM? -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
