On-board serial port compatibility?
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Hey all. We are trying to enable two serial ports on a machine we are trying to migrate to XCP. The machine in question is a MOXA DA820 that has two on-board RS-232/RS-422 ports. We have not been successful on utilizing these ports to send or receive data. We are able, however, to utilize serial ports when passed through PCIE, USB or Ethernet.
We have been reading that XCP is simply not able to utilize physical serial ports and that the only alterntives are the ones we already tried. Is this true? We would like to know more. -
Hi,
Can you tell more precisely what do you want to achieve functionally speaking?
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@LuisRiveraSig What chipset is used for the serial ports? My guess is that it's a special MOXA serial chipset (non-16550) and requires a special driver that XCP/Xen does not natively support.
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@olivierlambert We are trying to migrate from VMWare to XCP so we want to enable those two on-board serial ports, the goal here is to be
able to communicate with them. -
@Andrew It uses ITE8786E. Where could we find drivers for this?
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@LuisRiveraSig What are you trying to use the serial ports for?
- XCP console?
- Dom0 Serial port (ie. UPS monitor)?
- DomU/VM?
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@Andrew Its going to be used for digital I/O
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@LuisRiveraSig Since the device is not need for Xen Console or Dom0 then you can try a PCI pass-thru to the VM or use a USB device and pass it to the VM and just use the needed driver in the VM directly.
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@Andrew
I too would like to pass thru a serial port on Dell R460 server host to a vm running linux. I would like to use this to talk to a lighting system with this VM rather than using a stand alone desktop. -
@Double-e If you serial ports show up as a PCI or USB device then you can pass it to a VM. Most normal on-board serial ports can not be directly used in a VM.
Use
lspciandlsusbto check your devices. -
@Andrew I did not see a serial port listed. I'll just get a USB version and plug in to server and see if I can pass thru it. If it works, I can get rid of another Destop server and be fully virtual.
Thanks for your hellp.
