Re: debian-hppa on a C8000

On 2019-03-18 6:08 p.m., Helge Deller wrote:
>>> I pulled out any graphics card of this machine though.
>> And this seems to be necessary. It's still pure chance, whether the
>> graphics card is working or not. It may even cause a crash during
>> booting. Here's a boot log of a crash:
>>
>> [   93.621614] [drm] radeon kernel modesetting enabled.
>> [   93.871832] radeon 0000:80:00.0: enabling SERR and PARITY (0107 -> 0147)
>> [   94.010799] [drm] initializing kernel modesetting (RV350 0x1002:0x4154 0x1002:0x0002 0x80).
>> [   94.179812] ipmi 16: Found new BMC (man_id: 0x00000b, prod_id: 0x8201, dev_id: 0x32)
>> [   94.219177] [drm] GPU not posted. posting now...
>> [   94.347007] ipmi 16: IPMI kcs interface initialized
>> [   94.512299] radeon 0000:80:00.0: putting AGP V3 device into 8x mode
>> [   94.599144] radeon 0000:80:00.0: GTT: 512M 0x60000000 - 0x7FFFFFFF
>> [   94.599165] [drm] Generation 2 PCI interface, using max accessible memory
>> [   94.599179] radeon 0000:80:00.0: VRAM: 128M 0xFFFFFFFFC0000000 - 0xFFFFFFFFC7FFFFFF (128M used)
>> [   94.599496] [drm] Detected VRAM RAM=128M, BAR=128M
>> [   94.599504] [drm] RAM width 128bits DDR
>> [   94.603570] [TTM] Zone  kernel: Available graphics memory: 8218164 kiB
>> [   94.603578] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB
>> [[   94.603584] [TTM] Initializing pool allocator
>> [   94.887738] [drm] radeon: 128M of VRAM memory ready
>>   OK     94.887756] [drm] radeon: 512M of GTT memory ready.
>> m] Found device    94.888008] [drm] radeon: 1 quad pipes, 1 Z pipes initialized
>> ;1;39m82540EM Gi[   94.923120] radeon 0000:80:00.0: WB disabled
>> gabit Ethernet C[   94.923159] radeon 0000:80:00.0: fence driver on ring 0 use gpu addr 0x0000000060000000 and cpu addr 0x000000002cdcd946
>>
>> ontroller.
>> [   94.930972] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
>> [   95.807136] [drm] Driver supports precise vblank timestamp query.
>> [   95.807402] [drm] radeon: irq initialized.
>> [   95.807548] [drm] Loading R300 Microcode
>> [   95.835137] radeon 0000:80:00.0: firmware: failed to load radeon/R300_cp.bin (-2)
>> [   95.835160] firmware_class: See https://wiki.debian.org/Firmware for information about missing firmware
>> [   95.835172] radeon 0000:80:00.0: Direct firmware load for radeon/R300_cp.bin failed with error -2
>> [   95.835558] [drm:r100_cp_init [radeon]] *ERROR* Failed to load firmware!
>> [   95.835581] radeon 0000:80:00.0: failed initializing CP (-2).
>> [   96.503094] radeon 0000:80:00.0: Disabling GPU acceleration
>> [   96.504398] [drm] radeon: cp finalized
>> [   96.531896] [drm] radeon: cp finalized
>> [   96.683535] [TTM] Finalizing pool allocator
>> [   96.735229] [TTM] Zone  kernel: Used memory at exit: 0 kiB
>> [   96.735229] [TTM] Zone   dma32: Used memory at exit: 0 kiB
>> [   96.735229] [drm] radeon: ttm finalized
>> [   96.735229] [drm] Forcing AGP to PCI mode
>> [   96.793669] [drm] Generation 2 PCI interface, using max accessible memory
>> [   97.099110] radeon 0000:80:00.0: VRAM: 128M 0xFFFFFFFFC0000000 - 0xFFFFFFFFC7FFFFFF (128M used)
>> [   97.099121] radeon 0000:80:00.0: GTT: 512M 0xFFFFFFFFA0000000 - 0xFFFFFFFFBFFFFFFF
>> [   97.099142] [drm] Detected VRAM RAM=128M, BAR=128M
>> [   97.099149] [drm] RAM width 128bits DDR
>> [   97.203340] [TTM] Zone  kernel: Available graphics memory: 8218164 kiB
>> [   97.203349] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB
>> [   97.203356] [TTM] Initializing pool allocator
>> [   97.203554] [drm] radeon: 128M of VRAM memory ready
>> [   97.203563] [drm] radeon: 512M of GTT memory ready.
>> [   97.203683] [drm] GART: num cpu pages 131072, num gpu pages 131072
>> [   97.396449] [drm] radeon: 1 quad pipes, 1 Z pipes initialized
>> [   97.396472] [drm] PCI GART of 512M enabled (table at 0x0000000043D00000).
>> [   97.396631] radeon 0000:80:00.0: WB enabled
>> [   97.396652] radeon 0000:80:00.0: fence driver on ring 0 use gpu addr 0xffffffffa0000000 and cpu addr 0x00000000e3b927cf
>> [   97.396665] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
>> [   97.396671] [drm] Driver supports precise vblank timestamp query.
>> [   97.396753] [drm] radeon: irq initialized.
>> [   97.396763] [drm] Loading R300 Microcode
>> [   97.396855] radeo
>>
>> At this point it crashed with a blinking red LED.
>>
>> But even if the graphics card works, it's almost unusable now. The
>> previous version with KDE4 worked reasonable fast, but the new Plasma
>> desktop is incredibly slow. Even the simple systemsettings5
>> application uses about 100% CPU time and everything reacts extremely
>> slow on keyboard and mouse events.
> Ok, that needs more analyzing.
> Hard to say from here what's wrong.
> I can try to debug further when I found time at some point.
I've never seen the kernel try PCI after AGP as far as I can recall.  One as WB enabled and the
other doesn't.

Dave