Planning to add a PCIe(not in USB protocol) device

[王道之]

Intel have the plan to opensource the PCIe driver.  I would put it here
once the Intel opensource it.
But the driver do not offer a cdc_mbim port, just offer AT port. In MM, it
would manage with the base modem. And the VLAN ID map is defined by Intel,
so I do not think the driver could be use in other modem chips.
As the link that Daniele put shows, MHI seems like a usual solution.

Bjørn Mork <bjorn at mork.no> 于2019年3月15日周五 下午4:28写道：

> Now you made me really curious. That sounds a lot like the cdc_mbim
> userspace ABI. And I didn't expect anyone to copy that since I don't think
> anyone is happy with it. Including me.
>
> Or are they simply creating a usb mbim device? That would make sense. But
> then it should have worked with mm, so I guess not...
>
>
> Bjørn
>
> On March 15, 2019 8:59:04 AM GMT+01:00, "王道之" <lingzangwuhen at gmail.com>
> wrote:
> >Hey
> >The Intel offer a PCIe device driver to suit my situation. The driver
> >could
> >grab a virtual net port from the PCIe modem, then the user like me
> >could
> >use VLAN to divide the virtual net port in several VLAN ports, the VLAN
> >port can be mapped by socat as AT port and trace port. The map is
> >defined
> >by Intel.
> >But the MM could not add those virtual AT ports and virtual net port.
> >To do
> >that, I change some filter logic that would not influence the
> >architecture
> >now in use. And I add two UDEV flag to set the  subsystem and port name
> >of
> >the virtual ports, flags named ID_MM_VIRTUAL_SUBSYSTEMS and
> >ID_MM_VIRTUAL_NAME, the way that the two new flags work just like the
> >already existing UDE flag D_MM_PHYSDEV_UID did. In this way, the MM
> >would
> >support modem devices with virtual ports.
> >
> >Bjørn Mork <bjorn at mork.no> 于2019年3月9日周六 下午8:09写道：
> >
> >> Daniele Palmas <dnlplm at gmail.com> writes:
> >> > Il giorno lun 10 dic 2018 alle ore 14:25 Bjørn Mork <bjorn at mork.no>
> >ha
> >> scritto:
> >> >>
> >> >> As for Qualcomm based modems:  Haven't yet seen any docs for the
> >PCIe
> >> >> interface there either.  So I'll assume it is similar to the Intel
> >one.
> >> >
> >> > related to Qualcomm I guess this development
> >> >
> >> >
> >>
> >
> http://archive.lwn.net:8080/linux-kernel/1524795811-21399-1-git-send-email-sdias@codeaurora.org/
> >> >
> >> > should be related, but unfortunately it seems that the attempt for
> >> > upstream inclusion stopped.
> >>
> >> Thanks for the pointer!  Really interesting and encouraging.
> >>
> >>
> >> Bjørn
> >>
>
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