RE: Re Re: "Lost interrupt" with promise20268 PCI-IDE chard onmpc8540_ads

RE: Re Re: "Lost interrupt" with promise20268 PCI-IDE chard onmpc8540_ads

[Rune Torgersen]

=20

> -----Original Message-----
> From:KylongMu
> Sent: Monday, September 12, 2005 10:58
> To: Linuxppc-embedded@ozlabs.org
> Subject: Re Re: "Lost interrupt" with promise20268 PCI-IDE=20

> back the test result to you , but which PCI-IDE bridge will=20
> support DMA on
> MPC8540 ? I wonder the bandwidth of IDE will be a bottleneck=20
> of my system
> requirement .

I have run a Silicon Image SiI0680 based card on a MPC8560ADS board
without problems

New message about: "Lost interrupt" with promise20268 PCI-IDE chard onmpc8540_ads

[KylongMu]

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Hi , all
	First I according  Clemens Koller' suggestion : remove DMA part ,
but the result is no change.
According Clemens Koller's message , I guess mabe the problem is on the
hardware configuration.
So I checked my schematics and
"arch/ppc/platforms/85xx/mpc85xx_ads_common.c" at line 170 .
The attached file is changed .
	After these , "Lost interrupt" appears on PCI1-Slot1 , but my
PCI1-Slot2 shows no "Lost interrupt"
the .config file is still without change .
	Another new problem is I can't mount it on , I attached the steps
message of new operation.
Please help me check it .

Thanks a lot !

Rune Torgersen wrote :

>I have run a Silicon Image SiI0680 based card on a MPC8560ADS board without
problems

Clemens Koller wrote:

>Try to turn off DMA. It doesn't work yet AFAIK.
>I am using a PDC20269 on PCI on a MPC8540, too. See my .config file...
>I didn't focus on this problem yet. Let me know if you get it going.

>My board PM854 is similar to the MPC8540_ADS

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Re: New message about: "Lost interrupt" with promise20268 PCI-IDE chard onmpc8540_ads

[Clemens Koller]

Hello, KylongMu, Rune!

(Please reply to the thread.)

> 	First I according  Clemens Koller' suggestion : remove DMA part ,
> but the result is no change.

Okay, sorry if my 'workaround' (let's call it 'cheat') didn't do it for you...

> According Clemens Koller's message , I guess mabe the problem is on the
> hardware configuration.
> So I checked my schematics and
> "arch/ppc/platforms/85xx/mpc85xx_ads_common.c" at line 170 .
> The attached file is changed .
> 	After these , "Lost interrupt" appears on PCI1-Slot1 , but my
> PCI1-Slot2 shows no "Lost interrupt"
> the .config file is still without change .
> 	Another new problem is I can't mount it on , I attached the steps
> message of new operation.
> Please help me check it .

To be honest, I didn't tell you that there are still issues with my
mpc85xx_map_irq() and friends(). I didn't fix the table for my board
yet as the official CR854 demo board has only on PCI slot and I just
didn't care about proper IDSEL->IRQ mapping.
The hardware add-on we design should be compatible to the ADS board (or to
be precise to the default mpc8540_ads behaviour in the kernel) as much
as possible, so there should be no need for a separate platform port.

> Rune Torgersen wrote :
>>I have run a Silicon Image SiI0680 based card on a MPC8560ADS board without
> problems

Yes, but AFAIK it's only 32bit/33MHz PCI and therefore not speedy enough for
the things we want to achieve (100..200Mbyte+/sec).
So, this problem with the PDC has to be fixed... but it will take some time.

Best greets,

Clemens Koller
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