Date: Sat, 3 Mar 2018 19:43:59 +0100 From: Andre Albsmeier <Andre.Albsmeier@siemens.com> To: Daniel Eischen <deischen@freebsd.org> Cc: Andre Albsmeier <Andre.Albsmeier@siemens.com>, freebsd-hackers@FreeBSD.org Subject: Re: Adding support for MosChip 9912 PCIe (serial/parallel) cards Message-ID: <20180303184359.GA29745@bali> In-Reply-To: <Pine.GSO.4.64.1803031051290.19549@sea.ntplx.net> References: <20180302061852.GA7887@bali> <Pine.GSO.4.64.1803020833290.14754@sea.ntplx.net> <20180303064400.GA27337@bali> <Pine.GSO.4.64.1803031051290.19549@sea.ntplx.net>
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On Sat, 03-Mar-2018 at 10:53:20 -0500, Daniel Eischen wrote:
> On Sat, 3 Mar 2018, Andre Albsmeier wrote:
>
> > On Fri, 02-Mar-2018 at 08:36:40 -0500, Daniel Eischen wrote:
> >> On Fri, 2 Mar 2018, Andre Albsmeier wrote:
> >>
> >>> I have a MosChip 9912 card (PCIe card with 1 parallel and 2 serial
> >>> ports) sitting here which does not get detected on 11.1. I tried
> >>> to simply add it to the uart and ppc drivers with
> >>>
> >> [ ... ]
> >>
> >> Do you try adding similar support to puc_pci_devices[] in
> >> sys/dev/puc/pucdata.c?
> >
> > Just tried that:
> >
> > @@ -1204,6 +1204,11 @@
> > PUC_PORT_1S1P, 0x10, 4, 0,
> > },
> >
> > +{ 0x9710, 0x9912, 0xa000, 0x3012,
> > + "NetMos NM9912 Dual UART and 1284 Printer port",
> > + DEFAULT_RCLK,
> > + PUC_PORT_2S1P, 0x10, 4, 0,
> > +},
> > { 0x9710, 0x9865, 0xa000, 0x3012,
> > "NetMos NM9865 Dual UART and 1284 Printer port",
> > DEFAULT_RCLK,
> >
> > But the results are exactly the same. It also doesn't
> > matter if puc.ko is loaded at all.
>
> Are you sure your subvendor and subdevice are correct? I would
No ;-). I have to use: 0x9710, 0x9912, 0xa000, 0x2000,
Now I have the following behaviour:
When I load puc.ko I get:
puc0: <NetMos NM9912 Dual UART and 1284 Printer port> at device 0.2 on pci9
If I load ppc.ko now, I get:
ppc0: parallel port not found.
But if I unload puc and ppc and load ppc again, I get:
ppc0: <MosChip MCS9912 PCIe to Peripheral Controller> port 0xd000-0xd007,0xd008-0xd00f mem 0x89200000-0x89200fff irq 20 at device 0.2 on pci9
ppc0: Generic chipset (EPP/NIBBLE) in COMPATIBLE mode
ppbus0: <Parallel port bus> on ppc0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
For all this I have to disable /boot/device.hints -- otherwise
the messages "driver bug: Unable to set devclass" comes back.
So I think there are two problems:
First the settings of the ISA stuff in /boot/device.hints conflicted
with the settings the driver probed. This would be easy to solve --
just disable them in /boot/device.hints.
Second it appears that ppc only attaches if puc did some kind of
initialisation first. But we have to detach puc so the ppc can attach.
-Andre
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