Re: Malta + USB on 2.4, anyone?

[Jun Sun <jsun@mvista.com>]

On Thu, Jul 31, 2003 at 10:36:29AM -0700, Jun Sun wrote:
> On Thu, Jul 31, 2003 at 12:26:44PM +0200, Maciej W. Rozycki wrote:
> > On Wed, 30 Jul 2003, Jun Sun wrote:
> > 
> > > Has anybody tried USB on malta with 2.4 kernel?  I just found that
> > > I got 0xff IRQ number and kernel panics.
> > 
> >  Possibly IRQ routing is broken -- the PIIX4 uses INTD for its USB
> > controller's interrupt.  For the Malta it should be routed to the IRQ11
> > input of the PIIX4's internal dual-8259A PIC.  What does `/sbin/lspci -vv
> > -s 00:0a.2' print?
> >
> 
> The output seems to say the same thing:
> 
> root@10.0.18.6:~# lspci -vv -s 00:0a.2                                          
> 00:0a.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01) (prog-if 00
>  [UHCI])                                                                        
>         Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Step
> ping- SERR- FastB2B-                                                            
>         Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort
> - <MAbort- >SERR- <PERR-                                                        
>         Latency: 32                                                             
>         Interrupt: pin D routed to IRQ 11                                       
>         Region 4: I/O ports at 1220 [size=32]                                   
> 

Using the alternative JE driver sovles the problem.  

I suspect the main UHCI driver does not get cache flushing
or bus/virt address right.


Jun