Re: pcmcia cards on Sony laptop

["Sepherosa Ziehau" <sepherosa@xxxxxxxxx>]

On Mon, Oct 20, 2008 at 12:52 PM, Justin C. Sherrill
<justin@shiningsilence.com> wrote:
> On Sun, October 19, 2008 11:50 pm, Sepherosa Ziehau wrote:
>
>> Try setting following tunable (not sysctl) to 0xe0206000
>> hw.cbb.start_memory
>
> I put it in loader.conf - no change.  Why "0xe0206000"?

The pccbb is on pci2.pcib1

pcib1 opens following memory window:
pcib1:   memory decode     0xe0200000-0xe02fffff

fwohci0 is on pci2.pcib1
It could use two memory region:
mem 0xe0200000-0xe0203fff,0xe0205000-0xe02057ff

fxp0 is on pci2.pcib1
It could use on memory region:
0xe0204000-0xe0204fff

The memory regions requested by fxp0 and fwohci0 consume
0xe0200000-0xe02057ff of pcib1's memory window, so pccbb could only
use memory window starting from 0xe0206000 (0xe0205800-0xe02059ff
could not be used due to start address alignment requirement)

I will give you another patch to try when I get home.  Setting
hw.cbb.start_memory obviously is not enough.  If my analysis is
correct, cbb is actually reading from firewire's memory region (cbb0:
lazy allocation of 0x1000 bytes rid 0x10 type 3 at 0xe0200000).

Best Regards,
sephe

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