[Qemu-devel] [PATCH] hw/arm/armsse: Fix miswiring of expansion IRQs

[Qemu-devel] [PATCH] hw/arm/armsse: Fix miswiring of expansion IRQs

[Peter Maydell]

In commit 91c1e9fcbd7548db368 where we added dual-CPU support to
the ARMSSE, we set up the wiring of the expansion IRQs via nested
loops: the outer loop on 'i' loops for each CPU, and the inner loop
on 'j' loops for each interrupt. Fix a typo which meant we were
wiring every expansion IRQ line to external IRQ 0 on CPU 0 and
to external IRQ 1 on CPU 1.

Fixes: 91c1e9fcbd7548db368 ("hw/arm/armsse: Support dual-CPU configuration")

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
It turns out that the ARM-TFM image I was using to test that
I hadn't broken the mps2-an505 doesn't actually rely on any
interrupts from the external devices...

 hw/arm/armsse.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/arm/armsse.c b/hw/arm/armsse.c
index 5d53071a5a0..9a8c49547db 100644
--- a/hw/arm/armsse.c
+++ b/hw/arm/armsse.c
@@ -565,7 +565,7 @@ static void armsse_realize(DeviceState *dev, Error **errp)
         /* Connect EXP_IRQ/EXP_CPUn_IRQ GPIOs to the NVIC's lines 32 and up */
         s->exp_irqs[i] = g_new(qemu_irq, s->exp_numirq);
         for (j = 0; j < s->exp_numirq; j++) {
-            s->exp_irqs[i][j] = qdev_get_gpio_in(cpudev, i + 32);
+            s->exp_irqs[i][j] = qdev_get_gpio_in(cpudev, j + 32);
         }
         if (i == 0) {
             gpioname = g_strdup("EXP_IRQ");
-- 
2.20.1

Re: [Qemu-devel] [PATCH] hw/arm/armsse: Fix miswiring of expansion IRQs

[Philippe Mathieu-Daudé]

On 2/12/19 11:52 AM, Peter Maydell wrote:
> In commit 91c1e9fcbd7548db368 where we added dual-CPU support to
> the ARMSSE, we set up the wiring of the expansion IRQs via nested
> loops: the outer loop on 'i' loops for each CPU, and the inner loop
> on 'j' loops for each interrupt. Fix a typo which meant we were
> wiring every expansion IRQ line to external IRQ 0 on CPU 0 and
> to external IRQ 1 on CPU 1.
> 
> Fixes: 91c1e9fcbd7548db368 ("hw/arm/armsse: Support dual-CPU configuration")
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
> It turns out that the ARM-TFM image I was using to test that
> I hadn't broken the mps2-an505 doesn't actually rely on any
> interrupts from the external devices...

How did you notice that, simply reviewing? Via 'info qtree'?

> 
>  hw/arm/armsse.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/arm/armsse.c b/hw/arm/armsse.c
> index 5d53071a5a0..9a8c49547db 100644
> --- a/hw/arm/armsse.c
> +++ b/hw/arm/armsse.c
> @@ -565,7 +565,7 @@ static void armsse_realize(DeviceState *dev, Error **errp)
>          /* Connect EXP_IRQ/EXP_CPUn_IRQ GPIOs to the NVIC's lines 32 and up */
>          s->exp_irqs[i] = g_new(qemu_irq, s->exp_numirq);
>          for (j = 0; j < s->exp_numirq; j++) {
> -            s->exp_irqs[i][j] = qdev_get_gpio_in(cpudev, i + 32);
> +            s->exp_irqs[i][j] = qdev_get_gpio_in(cpudev, j + 32);
>          }
>          if (i == 0) {
>              gpioname = g_strdup("EXP_IRQ");
> 

Re: [Qemu-devel] [PATCH] hw/arm/armsse: Fix miswiring of expansion IRQs

[Peter Maydell]

On Tue, 12 Feb 2019 at 11:05, Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
>
> On 2/12/19 11:52 AM, Peter Maydell wrote:
> > In commit 91c1e9fcbd7548db368 where we added dual-CPU support to
> > the ARMSSE, we set up the wiring of the expansion IRQs via nested
> > loops: the outer loop on 'i' loops for each CPU, and the inner loop
> > on 'j' loops for each interrupt. Fix a typo which meant we were
> > wiring every expansion IRQ line to external IRQ 0 on CPU 0 and
> > to external IRQ 1 on CPU 1.
> >
> > Fixes: 91c1e9fcbd7548db368 ("hw/arm/armsse: Support dual-CPU configuration")
> >
> > Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
>
> > ---
> > It turns out that the ARM-TFM image I was using to test that
> > I hadn't broken the mps2-an505 doesn't actually rely on any
> > interrupts from the external devices...
>
> How did you notice that, simply reviewing? Via 'info qtree'?

I'm working on a model of a different board (Musca) which also
uses the SSE-200, and the test code I had for that does happen
to care about the interrupts.

thanks
-- PMM

Re: [Qemu-devel] [PATCH] hw/arm/armsse: Fix miswiring of expansion IRQs

[Philippe Mathieu-Daudé]

On 2/12/19 12:06 PM, Peter Maydell wrote:
> On Tue, 12 Feb 2019 at 11:05, Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
>> On 2/12/19 11:52 AM, Peter Maydell wrote:
>>> In commit 91c1e9fcbd7548db368 where we added dual-CPU support to
>>> the ARMSSE, we set up the wiring of the expansion IRQs via nested
>>> loops: the outer loop on 'i' loops for each CPU, and the inner loop
>>> on 'j' loops for each interrupt. Fix a typo which meant we were
>>> wiring every expansion IRQ line to external IRQ 0 on CPU 0 and
>>> to external IRQ 1 on CPU 1.
>>>
>>> Fixes: 91c1e9fcbd7548db368 ("hw/arm/armsse: Support dual-CPU configuration")
>>>
>>> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
>>
>> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
>>
>>> ---
>>> It turns out that the ARM-TFM image I was using to test that
>>> I hadn't broken the mps2-an505 doesn't actually rely on any
>>> interrupts from the external devices...
>>
>> How did you notice that, simply reviewing? Via 'info qtree'?
> 
> I'm working on a model of a different board (Musca) which also
> uses the SSE-200, and the test code I had for that does happen
> to care about the interrupts.

OK, welcome Musca!

If you are testing Open Source code, please add a few notes on the wiki
or in a mail (or the cover when you introduce the Musca), so we can add
an acceptance test.

Thanks,

Phil.