Re: mainline 4.14-rc4: renesas_sdhi_internal_dmac ee100000.sd: swiotlb buffer is full?

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Hi Dirk,

On Wed, Oct 11, 2017 at 2:57 PM, Dirk Behme <dirk.behme@xxxxxxxxxxxx> wrote:
> On 11.10.2017 14:42, Geert Uytterhoeven wrote:
>> On Wed, Oct 11, 2017 at 2:23 PM, Dirk Behme <dirk.behme@xxxxxxxxxxxx>
>> wrote:
>>> trying to boot recent mainline v4.14-rc4 on a custom H3 ES2.0 board with
>>> rootfs on SD card I'm getting [1].
>>>
>>> Last time I think I used v4.13 in the same environment and I think it
>>> worked
>>> fine, most probably because renesas_sdhi_internal_dmac wasn't there, yet
>>> ;)
>>>
>>> I checked renesas-drivers-2017-10-03-v4.14-rc3 if there is anything newer
>>> regarding drivers/mmc/host/renesas_sdhi_internal_dmac.c but doesn't look
>>> so.
>>>
>>> Any idea what I missed?
>>>
>> How much swiotlb memory do you have? The default is 64 MiB:
>>
>>      software IO TLB [mem 0x77fff000-0x7bfff000] (64MB) mapped at
>> [ffffffc037fff000-ffffffc03bffefff]
>
> Same here:

OK.

>> Then, who else is consuming lots of swiotlb memory?

Or, not freeing allocated memory.

> Hmm, any idea how to find that?
>
> The dmesg doesn't seem to have more infos about that (?)

I'm afraid you have to add some prints to swiotlb_tbl_map_single()
(and swiotlb_tbl_unmap_single())...

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds



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