On 04/07/2020 12:11, Mark Cave-Ayland wrote: > According to gdbstub the destination address in $g3 looks like this: > > Breakpoint 1, 0x00000000007ad8e4 in cfb_imageblit () > (gdb) i r $g3 > g3 0x100220000 4297195520 > > > The 0x100220000 address still isn't right. On sun4u the PCI address space is mapped > at physical address 0x1fe00000000 and adding these two together gives 0x1ff00220000 > which seems closer, but still not the correct framebuffer address 0x1ff22000000 which > is reported at boot: > > [ 9.007161] [drm] Found bochs VGA, ID 0xb0c5. > [ 9.007840] [drm] Framebuffer size 16384 kB @ 0x1ff22000000, mmio @ 0x1ff23000000. As a comparison, I took the last known good commit 7a0483ac4ffc~1: "drm/bochs: add basic prime support" and added some debug in cfb_imageblit() to allow me to pick out p->screen_base: (gdb) i r $o1 o1 0x1ff22000000 2195298713600 When running git master with your patch in the same way I get a completely different value: (gdb) i r $o1 o1 0x100050000 4295294976 Does p->screen_base need to be initialised differently when using the cfb helpers? ATB, Mark. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
