On Mon, 2006-09-11 at 10:58 +0200, Matthias Fuchs wrote:
> On Sunday 10 September 2006 13:02, Wolfgang Grandegger wrote:
> > Hi Matthias,
> >
> > Matthias Fuchs wrote:
> > > Hi,
> > >
> > > I was trying to use some external hardware interupts on a PPC405 board
> > > as part of a hacking session with Jan to bring up the rtcan driver on
> > > this board.
> > >
> >
> > Could you please add printk statements to the ack, enable and end
> > functions to arch/ppc/syslib/ppc4xx_pic.c if the irq number matches.
> > Please print also SR, ER and status.
>
> 1) insmodding the driver:
> bash-3.00# modprobe xeno_rtcan_isa mem=0xf0000000 irq=25
> rtcan: registered rtcan0
> _enable: ER=003f0040, SR=c0000000
>
> 2) receiving
> bash-3.00# /sbin/rtcanconfig rtcan0 -b 500000 up
> bash-3.00# ./bin/rtcanrecv rtcan0
> _ack: ER=003f0000, SR=c0000040
> _end: ER=003f0000, SR=c0000000
> #0: (1) <0x000> [8] 00 00 00 00 01 00 00 00
>
> That's it. When sending a 2nd message to the board, nothing happens.
> We have a LED on the SJA1000 interrupt signal. After sending the 2nd message
> this LED stays on, so the interrupt is never handled.
>
> It seems that the interrupt is not reenabled (bit 25) in the "end" function.
>
It's likely an Adeos issue. Could you try this patch? TIA,
--- arch/ppc/syslib/ppc4xx_pic.c~ 2005-10-28 02:02:08.000000000 +0200
+++ arch/ppc/syslib/ppc4xx_pic.c 2006-09-11 12:18:14.000000000 +0200
@@ -72,7 +72,8 @@
mtdcr(DCRN_UIC_SR(UIC##n), mask); \
ACK_UIC##n##_PARENT \
} \
- if (!(status & (IRQ_DISABLED | IRQ_INPROGRESS))) { \
+ if (!ipipe_root_domain_p || \
+ !(status & (IRQ_DISABLED | IRQ_INPROGRESS))) { \
ppc_cached_irq_mask[n] |= mask; \
mtdcr(DCRN_UIC_ER(UIC##n), ppc_cached_irq_mask[n]); \
} \
> Matthias
>
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--
Philippe.
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