Re: grub with serial line configuration using PCI serial adapter

[Andrei Borzenkov]

and subvendor/subroduct?

On Wed, Oct 19, 2016 at 12:20 PM, rishat <address@hidden> wrote:
> Hi
> lspci -nn
> ...
> 01:06.0 Serial controller [0700]: MosChip Semiconductor Technology Ltd. PCI
> 9835 Multi-I/O Controller [9710:9835] (rev 01)
> ...
>
> --
> With best regards
> Rishat
>
> On 2016-10-19 06:40, Andrei Borzenkov wrote:
>>
>> 18.10.2016 23:05, Songatov Rishat пишет:
>>>
>>> Hi
>>>
>>> lspci -i in the grub environment shows me this:
>>>
>>> 01:06.0 9710:9835 [0700] Communication controller [PI 02]
>>> IO space 0 at 0xac00
>>> IO space 1 at 0xa880
>>> IO space 2 at 0xa800
>>> IO space 3 at 0xa480
>>> IO space 4 at 0xa400
>>> IO space 5 at 0xa080
>>>
>>> The same when OS is loaded:
>>>
>>> 01:06.0 Serial controller: MosChip Semiconductor Technology Ltd. PCI
>>> 9835 Multi-I/O Controller (rev 01) (prog-if 02 [16550])
>>>     Subsystem: LSI Logic / Symbios Logic 2S (16C550 UART)
>>
>>
>> Could you please show PCI IDs (lspci -nn ...)?
>>
>>>     Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
>>> Stepping- SERR+ FastB2B- DisINTx-
>>>     Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
>>> <TAbort- <MAbort- >SERR- <PERR- INTx-
>>>     Interrupt: pin A routed to IRQ 10
>>>     Region 0: I/O ports at ac00 [size=8]
>>>     Region 1: I/O ports at a880 [size=8]
>>>     Region 2: I/O ports at a800 [size=8]
>>>     Region 3: I/O ports at a480 [size=8]
>>>     Region 4: I/O ports at a400 [size=8]
>>>     Region 5: I/O ports at a080 [size=16]
>>>     Kernel driver in use: serial
>>>
>>> I think BIOS can't recognize this device as serial adapter. I will try
>>> to other one. Thank you to your support.
>>>
>>>
>>> On 18.10.2016 16:10, rishat wrote:
>>>>
>>>> Yes, I saw this serial card from lspci output. But I haven't found how
>>>> to display detailed information for certain card. Sooner I'll give you
>>>> output from lspci -i.
>>>>
>>>> --
>>>> With best regards
>>>> Rishat
>>>>
>>>> On 2016-10-18 14:05, Andrei Borzenkov wrote:
>>>>>
>>>>> On Tue, Oct 18, 2016 at 12:48 PM, rishat <address@hidden> wrote:
>>>>>>
>>>>>> Hi Andrei
>>>>>> May I ask another question? How I can debug this behaviour? I
>>>>>> believe that
>>>>>> BIOS initializes this adapter. Need to say that "PnP OS" was setted
>>>>>> to "Yes"
>>>>>> value. I've changed it to "No" and ... same silence in the minicom.
>>>>>
>>>>>
>>>>> Well, assuming BIOS did initialize this card it may use different port
>>>>> address. The one you see in setserial output is assigned by Linux
>>>>> driver. I do not know how flexible it is, but I presume they may
>>>>> change.
>>>>>
>>>>> Try lspci command in GRUB. Does it show your card at all? It also
>>>>> displays some details of current card setup.
>>>>>
>>>>> You may want to use "set pager=1" otherwise output will scroll too
>>>>> fast.
>>>>>
>>>>> If you see your card could you send screenshot of information GRUB
>>>>> shows?
>>>>>
>>>>>> Then I
>>>>>> pulled out this adapter and inserted this pci serial adapter to the
>>>>>> other PC
>>>>>> computer. It has already integrated COM port, this one is working
>>>>>> fine, I
>>>>>> have tried to do serial connection via pci adapter, but again I've got
>>>>>> nothing. I just want to figure out is this something I can do with
>>>>>> motherboard or my pci adapter is not compatible. If I need to change
>>>>>> this
>>>>>> card do you have list of pci, pci-e card that successfully can by
>>>>>> used? Is
>>>>>> it possible I've faced to situation when two motherboards can't
>>>>>> initialize
>>>>>> this hardware?
>>>>>>
>>>>>> Thank you in advance.
>>>>>>
>>>>>> --
>>>>>> Best regards
>>>>>> Rishat
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 2016-10-18 06:47, Andrei Borzenkov wrote:
>>>>>>>
>>>>>>>
>>>>>>> 17.10.2016 22:22, Songatov Rishat пишет:
>>>>>>>>
>>>>>>>>
>>>>>>>> Hi thank you for helping me!
>>>>>>>>
>>>>>>>> Unfortunately I haven't got serial access to the grub after adding
>>>>>>>> this
>>>>>>>> piece of configuration:
>>>>>>>>
>>>>>>>> insmod pci
>>>>>>>> insmod serial
>>>>>>>> insmod terminal
>>>>>>>> insmod terminfo
>>>>>>>>
>>>>>>>> ###serial --speed=115200 --port=a880 --word=8 --parity=no --stop=1
>>>>>>>> serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1
>>>>>>>>
>>>>>>>> terminal_input serial
>>>>>>>> terminal_output serial
>>>>>>>>
>>>>>>>> May be I need some sleep time after inserting pci.mod. How I can
>>>>>>>> do this?
>>>>>>>>
>>>>>>>
>>>>>>> You can pause with "sleep NN" but as I already wrote this is not
>>>>>>> likely
>>>>>>> to work anyway - either GRUB needs code to initialize your PCI card
>>>>>>> or
>>>>>>> BIOS should do it. Try BIOS settings, in the past it was common to
>>>>>>> have
>>>>>>> something like "PnP OS" where "no" would cause BIOS to initialize all
>>>>>>> available hardware and "yes" would leave it to operating system.
>>>>>>>
>>>>>>>> --
>>>>>>>>
>>>>>>>> Best regards
>>>>>>>>
>>>>>>>> Rishat
>>>>>>>>
>>>>>>>>
>>>>>>>> On 17.10.2016 20:34, Andrei Borzenkov wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> 17.10.2016 19:41, rishat пишет:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On 2016-10-17 19:16, Andrei Borzenkov wrote:
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> 17.10.2016 16:16, rishat пишет:
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> setserial -g /dev/ttyS[0-4]
>>>>>>>>>>>> /dev/ttyS0, UART: 16550A, Port: 0xa880, IRQ: 21
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> ...
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> When I tried to manually type a "serial --speed=115200 --unit=0
>>>>>>>>>>>> --word=8
>>>>>>>>>>>> --parity=no --stop=1" in the grub command line it complains
>>>>>>>>>>>> that COM1
>>>>>>>>>>>> port don't exist. I have played with unit and port attributes
>>>>>>>>>>>> but
>>>>>>>>>>>> without any luck.
>>>>>>>>>>>>
>>>>>>>>>>> Does "serial --port=a880 ..." work? If not, what exactly happens?
>>>>>>>>>>>
>>>>>>>>>>> Note that you may need to load at least PCI bus driver (insmod
>>>>>>>>>>> pci)
>>>>>>>>>>> for
>>>>>>>>>>> this to work.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> I've tried to use it that way but it didn't find com port again.
>>>>>>>>>> I'll try to do insmod pci and write to you tomorrow.
>>>>>>>>>>
>>>>>>>>> Yes, please let us know, but on firther consideration it probably
>>>>>>>>> won't
>>>>>>>>> help either. Card likely needs to be initialized first, and this
>>>>>>>>> requires driver that knows how to do it. serial driver in GRUB
>>>>>>>>> presumes
>>>>>>>>> hardware is in working state already. Someone would need to
>>>>>>>>> implement
>>>>>>>>> it.
>>>>>>>>>
>>>>>>>>>> By the way is it possible to share documentation about some useful
>>>>>>>>>> modules in the grub? I havn't found any information using google.
>>>>>>>>>>
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> Help-grub mailing list
>>>>>>>>>>> address@hidden
>>>>>>>>>>> https://lists.gnu.org/mailman/listinfo/help-grub
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>
>>>>
>>>>
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