re: xsrc/50429: Xserver fails to start on Ultra-5 andNetBSD/sparc64 7.0

[matthew green <mrg%eterna.com.au@localhost>]

[ U60 shows: ]
>      Base address register at 0x18
>        type: 32-bit nonprefetchable memory
>        base: 0x03000000, not sized
>  
>  [  1169.766] (II) MACH64(0): Using 8 MB linear aperture at 0x02800000.
>  [  1169.766] (!!) MACH64(0): Virtual resolutions will be limited to 2047 kB
>   due to linear aperture size and/or placement of hardware cursor image area.
>  [  1169.767] (II) MACH64(0): Using Block 0 MMIO aperture at 0x03000400.
>  [  1169.767] (II) MACH64(0): Using Block 1 MMIO aperture at 0x03000000.
>  [  1169.770] (II) MACH64(0): MMIO write caching enabled.
>  [  1169.770] (--) MACH64(0): 2048 kB of SGRAM (1:1) detected (using 2047 kB).
>  
>  Looking through the driver source, in your case it should see a NULL in
>  the 0x18 BAR, therefore ignore it, and try to mmap() the MMIO registers
>  through the first aperture, at the last page of the first 8MB. I can't
>  really see a reason why that would fail.
>  Please sprinkle xf86Msg() over atividmem.c::ATIMapApertures() to see
>  what exactly it's trying to map - apparently the first two calls to
>  pci_device_map_range() succeed and only the last one, for &pATI->pMMIO,
>  fails.

my ultra10 was close to being setup for this and i just did this.

dmesg shows:

machfb0 at pci1 dev 2 function 0: ATI Technologies 3D Rage Pro (rev. 0x5c)
machfb0: using MMIO aperture
machfb0: 16 MB aperture at 0xe1000000, 4 KB registers at 0xe2000000
machfb0: 128 KB ROM at 0xe1020000
machfb0: 4096 KB SGRAM 98.924 MHz, maximum RAMDAC clock 230 MHz
machfb0: initial resolution 1280x1024 at 8 bpp
wsdisplay0 at machfb0 kbdmux 1: console (default, vt100 emulation)
direct rendering for machfb0 unsupported
machfb0: preposterous dot clock (0)

pcictl dump shows:

    Base address register at 0x10
      type: 32-bit nonprefetchable memory
      base: 0xe1000000, not sized
    Base address register at 0x14
      type: i/o
      base: 0x00000000, not sized
    Base address register at 0x18
      type: 32-bit nonprefetchable memory
      base: 0xe2000000, not sized
 
which isn't what you say should be seen at the BAR at 0x18?


.mrg.