On Wednesday, June 13, 2018 05:45:48 PM Ard Biesheuvel wrote: > On 18 May 2018 at 16:17, Sinan Kaya <okaya@xxxxxxxxxxxxxx> wrote: > > A host bridge is allowed to remap BAR addresses using _TRA attribute in > > _CRS windows. > > > > pci_bus 0000:00: root bus resource [mem 0x80100100000-0x8011fffffff window] (bus address [0x00100000-0x1fffffff]) > > pci 0000:02:00.0: reg 0x10: [mem 0x8011e000000-0x8011effffff] > > > > When a VGA device is behind such a host bridge and the resource is > > translated efifb driver is trying to do ioremap against bus address > > rather than the resource address and is failing to probe. > > > > efifb: probing for efifb > > efifb: cannot reserve video memory at 0x1e000000 > > efifb: framebuffer at 0x1e000000, using 1920k, total 1875k > > efifb: mode is 800x600x32, linelength=3200, pages=1 > > efifb: scrolling: redraw > > efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0 > > > > Use the host bridge offset information to convert bus address to > > resource address in the fixup. > > > > Signed-off-by: Sinan Kaya <okaya@xxxxxxxxxxxxxx> > > Reviewed-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> > > Bartlomiej, could you please take these via the fbdev tree for v4.19? Sure, I will queue it after the current merge window. > Peter already gave his ack but Sinan dropped it (presumably because of > the split in v2) Peter, can I (re)add your ACK to V2 patches? Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
