Re: grub with serial line configuration using PCI serial adapter

[Andrei Borzenkov]

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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