after running some OBP/forth tests on a real SS-20 I must say that
most of our (especially my) speculations were wrong, as well as what
is written in
http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt :
1. SS-20 may loose interrupts. At least if a timer interrupt was low
On Tue, Nov 17, 2009 at 12:35 AM, Jamie Lokier wrote:
> Artyom Tarasenko wrote:
>> I don't know, how the real sun4m reacts in the case where irq stays
>> on, not being cleared.
>> It can not be though that it would try to process irq for every next
>> tick. The CPU must have some time to clear the
2009/11/16 Blue Swirl :
> On Mon, Nov 16, 2009 at 7:19 PM, Artyom Tarasenko
> wrote:
>> 2009/11/16 Blue Swirl :
>>> On Mon, Nov 16, 2009 at 1:47 PM, Artyom Tarasenko
>>> wrote:
2009/11/15 Blue Swirl :
> On Sun, Nov 15, 2009 at 1:15 AM, Artyom Tarasenko
> wrote:
>> 2009/11/14 Blu
2009/11/16 Jamie Lokier :
> Artyom Tarasenko wrote:
>> I don't know, how the real sun4m reacts in the case where irq stays
>> on, not being cleared.
>> It can not be though that it would try to process irq for every next
>> tick. The CPU must have some time to clear the pending irq, so it must
>> b
Artyom Tarasenko wrote:
> I don't know, how the real sun4m reacts in the case where irq stays
> on, not being cleared.
> It can not be though that it would try to process irq for every next
> tick. The CPU must have some time to clear the pending irq, so it must
> be edge triggered too, at least in
Blue Swirl wrote:
> This patch makes the interrupts latch: ignore source clearing the
> interrupt. It seems be ~okay for my usual test setup, but does not
> help NetBSD 1.3.3. Some other NetBSD tests are changed, but they
> crashed before.
I'd expect the worst that would happen is "spurious interr
Artyom Tarasenko wrote:
> 2009/11/15 Blue Swirl :
> > On Sun, Nov 15, 2009 at 1:15 AM, Artyom Tarasenko
> > wrote:
> >> 2009/11/14 Blue Swirl :
> >>> On Sat, Nov 14, 2009 at 3:03 AM, Artyom Tarasenko
> >>> wrote:
> According to NCR89C105 documentation
> http://www.ibiblio.org/pub/histor
On Mon, Nov 16, 2009 at 7:19 PM, Artyom Tarasenko
wrote:
> 2009/11/16 Blue Swirl :
>> On Mon, Nov 16, 2009 at 1:47 PM, Artyom Tarasenko
>> wrote:
>>> 2009/11/15 Blue Swirl :
On Sun, Nov 15, 2009 at 1:15 AM, Artyom Tarasenko
wrote:
> 2009/11/14 Blue Swirl :
>> On Sat, Nov 14, 20
2009/11/16 Blue Swirl :
> On Mon, Nov 16, 2009 at 1:47 PM, Artyom Tarasenko
> wrote:
>> 2009/11/15 Blue Swirl :
>>> On Sun, Nov 15, 2009 at 1:15 AM, Artyom Tarasenko
>>> wrote:
2009/11/14 Blue Swirl :
> On Sat, Nov 14, 2009 at 3:03 AM, Artyom Tarasenko
> wrote:
>> According to N
> It looks like something is depending on this broken behaviour.
Or that I shouldn't have used bitwise "not" where boolean "not" were
actually meant. cpu_set_irq() is not the source of spurious
interrupts, sorry for the noise.
On Mon, Nov 16, 2009 at 1:47 PM, Artyom Tarasenko
wrote:
> 2009/11/15 Blue Swirl :
>> On Sun, Nov 15, 2009 at 1:15 AM, Artyom Tarasenko
>> wrote:
>>> 2009/11/14 Blue Swirl :
On Sat, Nov 14, 2009 at 3:03 AM, Artyom Tarasenko
wrote:
> According to NCR89C105 documentation
> http:/
2009/11/15 Blue Swirl :
> On Sun, Nov 15, 2009 at 1:15 AM, Artyom Tarasenko
> wrote:
>> 2009/11/14 Blue Swirl :
>>> On Sat, Nov 14, 2009 at 3:03 AM, Artyom Tarasenko
>>> wrote:
According to NCR89C105 documentation
http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105
On Sun, Nov 15, 2009 at 1:15 AM, Artyom Tarasenko
wrote:
> 2009/11/14 Blue Swirl :
>> On Sat, Nov 14, 2009 at 3:03 AM, Artyom Tarasenko
>> wrote:
>>> According to NCR89C105 documentation
>>> http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
>>>
>>> Interrupts are clear
2009/11/14 Blue Swirl :
> On Sat, Nov 14, 2009 at 3:03 AM, Artyom Tarasenko
> wrote:
>> According to NCR89C105 documentation
>> http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
>>
>> Interrupts are cleared by disabling and then re-enabling them.
>> This patch implement
On Sat, Nov 14, 2009 at 3:03 AM, Artyom Tarasenko
wrote:
> According to NCR89C105 documentation
> http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
>
> Interrupts are cleared by disabling and then re-enabling them.
> This patch implements the specified behaviour. The mo
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