Re: PowerMac G5 and KMS

Thank you.

Just unconditionally disabling AGP in R300 initialization made
radeonkms to load successfully.
It seems that no tunables for FreeBSD are described instead of
MODULE_PARM_DESC and module_param_named.
So, I have to learn how to add them to the source code.
(/usr/src/sys/dev/drm2/os_freebsd.c seem to help.)

Anyway, it worked. thank you.

Some problems remain. The virtual screen is larger than the real one and
I cannot see the command line I am inputting, and I did not yet test X  as
there seem to be problems in building them from ports, but that are
other things.


2017-03-06 13:03 GMT+09:00 Herminio Hernandez, Jr.
<herminio.hernandezjr_at_gmail.com>:
> Per the radeon man page here. However this option has been removed after
> 10.2. Under Linux the you set it in yaboot bootloader by using
> 'radeon.agpmode=-1'. I do not know if this will work in loader.conf
>
>
>
>   Option "BusType"	"string"
> 	      Used  to	replace	 previous ForcePCIMode option.	Should only be
> 	      used when	driver's bus detection is incorrect  or	 you  want  to
> 	      force an AGP card	to PCI mode. You should	NEVER force a PCI card
> 	      to AGP bus.
> 	      PCI    --	PCI bus
> 	      AGP    --	AGP bus
> 	      PCIE   --	PCI Express bus
> 	      (used only when DRI is enabled)
> 	      The default is auto detect.
>
>
>
> On Sun, Mar 5, 2017 at 3:35 PM, Hiroo Ono (小野寛生)
> <hiroo.ono+freebsd_at_gmail.com> wrote:
>>
>> Thank you. I see the point.
>>
>> 2017-03-05 17:20 GMT+09:00 Herminio Hernandez Jr.
>> <herminio.hernandezjr_at_gmail.com>:
>> > Try to force the Radeon driver into PCI mode. Under Linux doing this
>> > stops
>> > the blank screen and locks.
>>
>> Could anyone tell me how to do it? Can it be done from FreeBSD?
>> I googled a little but could not find anything useful (maybe search
>> words were not
>> appropriate), so how to do it on Linux helps me also.
>>
>> pciconf -lc says:
>> vgapci0_at_pci0:0:16:0: class=0x30000 card=0x41501002 chip=0x41501002
>> rev=0x00 hdr=0x00
>>   cap 02[58] = AGP v3 8x 4x SBA disabled]
>>   cap 01[50] = powerspec 2 supports D0 D1 D2 D3 current D0
>
>