Re: [PATCH] hw/arm/sbsa-ref : Fix SMMUv3 Initialisation

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

Hi Gregory,

On 9/25/20 4:00 PM, Auger Eric wrote:
> Hi Gregory,
> 
> On 9/25/20 3:39 PM, Graeme Gregory wrote:
>> SMMUv3 has an error in previous patch where a i was transposed to a 1
>> meaning interrupts would not have been correctly assigned to the SMMUv3
>> instance.

This is a first issue, fixing 48ba18e6d3f3.

>>
>> The code also contained an error in that the IRQs were never allocated
>> in the irqmap.

This is another issue, not well explained. IIUC IRQs *are* allocated as
IRQ #0, right?

This fixes commit e9fdf453240 ("hw/arm: Add arm SBSA reference machine,
devices part"). Can you split this in another patch please? Eventually
Cc'ing qemu-stable@nongnu.org as suggested by Peter.

>>
>> Fixes: 48ba18e6d3f3 ("hw/arm/sbsa-ref: Simplify by moving the gic in the machine state")
>> Signed-off-by: Graeme Gregory <graeme@nuviainc.com>
> Reviewed-by: Eric Auger <eric.auger@redhat.com>
> 
> Thanks
> 
> Eric
> 
>> ---
>>  hw/arm/sbsa-ref.c | 3 ++-
>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c
>> index 257ada9425..9109fb58be 100644
>> --- a/hw/arm/sbsa-ref.c
>> +++ b/hw/arm/sbsa-ref.c
>> @@ -138,6 +138,7 @@ static const int sbsa_ref_irqmap[] = {
>>      [SBSA_SECURE_UART_MM] = 9,
>>      [SBSA_AHCI] = 10,
>>      [SBSA_EHCI] = 11,
>> +    [SBSA_SMMU] = 12, /* ... to 15 */
>>  };
>>  
>>  static uint64_t sbsa_ref_cpu_mp_affinity(SBSAMachineState *sms, int idx)
>> @@ -530,7 +531,7 @@ static void create_smmu(const SBSAMachineState *sms, PCIBus *bus)
>>      sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
>>      for (i = 0; i < NUM_SMMU_IRQS; i++) {
>>          sysbus_connect_irq(SYS_BUS_DEVICE(dev), i,
>> -                           qdev_get_gpio_in(sms->gic, irq + 1));
>> +                           qdev_get_gpio_in(sms->gic, irq + i));

BTW this fix is already in Peter's queue:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg732819.html

Thanks,

Phil.

>>      }
>>  }
>>  
>>
>