[PASEMI] Nemo board doesn't recognize any ATA disks with the pci-v5.16 updates

[Christian Zigotzky]

On 12 November 2021 at 11:11 am, Christian Zigotzky wrote:
> On 12 November 2021 at 10:40 am, Christian Zigotzky wrote:
>> On 11 November 2021 at 06:39 pm, Marc Zyngier wrote:
>>> On Wed, 10 Nov 2021 18:07:24 +0000,
>>> Christian Zigotzky <chzigotzky at xenosoft.de> wrote:
>>>> On 09 November 2021 at 03:45 pm, Christian Zigotzky wrote:
>>>>> Hello,
>>>>>
>>>>> The Nemo board [1] doesn't recognize any ATA disks with the
>>>> pci-v5.16 updates [2].
>>>>> Error messages:
>>>>>
>>>>> ata4.00: gc timeout cmd 0xec
>>>>> ata4.00: failed to IDENTIFY (I/O error, error_mask=0x4)
>>>>> ata1.00: gc timeout cmd 0xec
>>>>> ata1.00: failed to IDENTIFY (I/O error, error_mask=0x4)
>>>>> ata3.00: gc timeout cmd 0xec
>>>>> ata3.00: failed to IDENTIFY (I/O error, error_mask=0x4)
>>>>>
>>>>> I was able to revert the new pci-v5.16 updates [2]. After a new
>>>> compiling, the kernel recognize all ATA disks correctly.
>>>>> Could you please check the pci-v5.16 updates [2]?
>>>>>
>>>>> Please find attached the kernel config.
>>>>>
>>>>> Thanks,
>>>>> Christian
>>>>>
>>>>> [1] https://en.wikipedia.org/wiki/AmigaOne_X1000
>>>>> [2]
>>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c5c62ddf88c34bc83b66e4ac9beb2bb0e1887d4 
>>>>
>>>>
>>>> Hi All,
>>>>
>>>> Many thanks for your nice responses.
>>>>
>>>> I bisected today [1]. 0412841812265734c306ba5ef8088bcb64d5d3bd
>>>> (of/irq: Allow matching of an interrupt-map local to an interrupt
>>>> controller) [2] is the first bad commit.
>>> Can you please give the following hack a go and post the result
>>> (including the full dmesg)?
>>>
>>> Thanks,
>>>
>>>     M.
>>> diff --git a/drivers/of/irq.c b/drivers/of/irq.c
>>> index 32be5a03951f..8cf0cc9b7caf 100644
>>> --- a/drivers/of/irq.c
>>> +++ b/drivers/of/irq.c
>>> @@ -156,14 +156,15 @@ int of_irq_parse_raw(const __be32 *addr, 
>>> struct of_phandle_args *out_irq)
>>>         /* Now start the actual "proper" walk of the interrupt tree */
>>>       while (ipar != NULL) {
>>> +        bool intc = of_property_read_bool(ipar, 
>>> "interrupt-controller");
>>> +
>>>           /*
>>>            * Now check if cursor is an interrupt-controller and
>>>            * if it is then we are done, unless there is an
>>>            * interrupt-map which takes precedence.
>>>            */
>>>           imap = of_get_property(ipar, "interrupt-map", &imaplen);
>>> -        if (imap == NULL &&
>>> -            of_property_read_bool(ipar, "interrupt-controller")) {
>>> +        if (imap == NULL && intc) {
>>>               pr_debug(" -> got it !\n");
>>>               return 0;
>>>           }
>>> @@ -244,8 +245,14 @@ int of_irq_parse_raw(const __be32 *addr, struct 
>>> of_phandle_args *out_irq)
>>>                 pr_debug(" -> imaplen=%d\n", imaplen);
>>>           }
>>> -        if (!match)
>>> +        if (!match) {
>>> +            if (intc) {
>>> +                pr_info("%pOF interrupt-map failed, using 
>>> interrupt-controller\n", ipar);
>>> +                return 0;
>>> +            }
>>> +
>>>               goto fail;
>>> +        }
>>>             /*
>>>            * Successfully parsed an interrrupt-map translation; copy 
>>> new
>>>
>> The detecting of the ATA disks works with this patch! Well done! 
>> Thanks a lot!
>>
> Sorry, I have read the patch more carefully and I have seen that it is 
> an analyse patch. It's not a fix. I was too quick with my joy.
>
> - Christian
OK, perhaps a fix after all.

if (imap == NULL && intc) // If the return value isn't NULL then there 
isn't an interrupt-map. That means, this part was successfully (&&) and 
"intc" will evaluated (Testing of interrupt-controller). OK, perhaps it 
is a fix after all.

Output:

[    0.072659] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.072682] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.072701] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.072720] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.072741] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.072762] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.072784] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.072805] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.072824] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.072843] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.072861] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.072929] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073167] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073191] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073211] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073232] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073252] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073272] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073292] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073319] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073339] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073371] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073392] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073412] OF: /pxp at 0,e0000000 interrupt-map failed, using 
interrupt-controller
[    0.073426] PCI: Probing PCI hardware done