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

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

The following reply was made to PR xsrc/50429; it has been noted by GNATS.

From: matthew green <mrg%eterna.com.au@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: xsrc-manager%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
    netbsd-bugs%netbsd.org@localhost, tsutsui%ceres.dti.ne.jp@localhost
Subject: re: xsrc/50429: Xserver fails to start on Ultra-5 andNetBSD/sparc64 7.0
Date: Fri, 20 Nov 2015 18:35:44 +1100

 [ 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 204=
 7 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 204=
 7 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.