Re: mmccam -> no more cards/sdio but "mmcprobe"

On Sun, 20 Jul 2025, Warner Losh wrote:

> On Sun, Jul 20, 2025, 7:20 PM Warner Losh <imp@bsdimp.com> wrote:
>
>>
>>
>> On Sun, Jul 20, 2025, 5:24 PM Warner Losh <imp@bsdimp.com> wrote:
>>
>>>
>>>
>>> On Sun, Jul 20, 2025, 5:19 PM Bjoern A. Zeeb <
>>> bzeeb-lists@lists.zabbadoz.net> wrote:
>>>
>>>> Hi,
>>>>
>>>> I've updated one of my trees to main after a longer while and I am
>>>> confused that I no longer see and SD card or SDIO (this is netbooted):
>>>>
>>>> # sysctl kern.features.mmccam
>>>> kern.features.mmccam: 1
>>>>
>>>> # camcontrol devlist -v
>>>> scbus0 on dw_mmc_sim0 bus 0:
>>>> <>                                 at scbus0 target 0 lun 0 (mmcprobe0)
>>>> scbus1 on dw_mmc_sim1 bus 0:
>>>> <>                                 at scbus1 target 0 lun 0 (mmcprobe1)
>>>> scbus-1 on xpt0 bus 0:
>>>> <>                                 at scbus-1 target -1 lun ffffffff
>>>> (xpt0)
>>>>
>>>> Where to start looking?
>>>>
>>>
>>> So those probes are put there to evaluate devices that were found. If
>>> they remain, then that never finished. Most likely never started.
>>>
>>> What hardware is this on?
>>>
>>
>> Thanks for the debug...
>>
>> As luck would have it, I just installed on emmc system (x86). I'm building
>> mmccam kernel now.
>>
>
> I can confirm this result. When was your last update? There was also
> sleeping on a non-sleepable lock witness warning...

The locking issue I think I posted a while a ago.

I cannot say which kernel last worked there; that was likely from 2024.

I found an arm64 MMCCAM kernel from around  2025-03-18/26 which works on
the LS1088.  Seems the last commit from main on that branch was
12bff22669cf .

# camcontrol devlist -v
scbus0 on sdhci_slot0 bus 0:
<SDHC FD4Q5 3.0 SN 7D9E55CA MFG 05/2022 >  at scbus0 target 0 lun 0 (pass0,sdda0)
...

In either case the nvme does work by the way.  It's just mmccam it seems
which does not.

-- 
Bjoern A. Zeeb                                                     r15:7