Sunix 4056A PCI 4 port RS-232 card - only 2 ports configured

[John Baldwin]

On Monday, May 23, 2011 11:17:08 am N.J. Mann wrote:
> In message <201105231026.54178.jhb at freebsd.org>,
> 	John Baldwin (jhb at freebsd.org) wrote:
> > On Sunday, May 22, 2011 7:00:02 am N.J. Mann wrote:
> > > Hi,
> > > 
> > > 
> > > I am trying to setup a console server, but I am having a problem with
> > > the hardware.  The RS-232 card I am using is a Sunix 4056A Universal PCI
> > > 4 port RS-232 card.  However, only two ports are being configured, uart2
> > > and uart3 - uart0 and uart1 are on the motherboard.  I had assumed that
> > > all I had to do was install the card, add puc(4) to my kernel and it
> > > would just work.
> > > 
> > > uname:
> > > ------
> > > FreeBSD 9.0-CURRENT #0: Thu May 19 15:01:10 UTC 2011 i386
> > > 
> > > I CVSup'ed about fours before then.
> > > 
> > > 
> > > relevant parts of verbose dmesg:
> > > --------------------------------
> > > found->	vendor=0x1409, dev=0x7168, revid=0x01
> > > 	domain=0, bus=0, slot=10, func=0
> > > 	class=07-00-02, hdrtype=0x00, mfdev=0
> > > 	cmdreg=0x0081, statreg=0x0280, cachelnsz=0 (dwords)
> > > 	lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
> > > 	intpin=a, irq=3
> > > 	map[10]: type I/O Port, range 32, base 0xe000, size  5, enabled
> > > 	map[14]: type I/O Port, range 32, base 0xe400, size  4, enabled
> > > pcib0: matched entry for 0.10.INTA
> > > pcib0: slot 10 INTA hardwired to IRQ 18
> > > [...]
> > > puc0: <Timedia technology 4 Port Serial> port 0xe000-0xe01f,0xe400-0xe40f 
> > >   irq 18 at device 10.0 on pci0
> > > ioapic0: routing intpin 18 (PCI IRQ 18) to lapic 0 vector 52
> > > uart2: <16550 or compatible> on puc0
> > > uart2: fast interrupt
> > > uart3: <16550 or compatible> on puc0
> > > uart3: fast interrupt
> > > 
> > > 
> > > I can provide a full verbose dmesg if required, together with any other
> > > information which may be relevant.
> > > 
> > > Any and all help gratefully received.
> > 
> > Hmm, for Timedia it looks like the puc(4) driver uses the subvendor device ID 
> > to figure out how many ports your card has, but it does see 4 ports (the
> > device descrption is correct).  Does 'devinfo -v' show any other child
> > devices of 'puc0' besides the two uart devices?
> 
> No.
> 
> puc0 pnpinfo vendor=0x1409 device=0x7168 subvendor=0x1409 subdevice=0x4056 class=0x070002 at slot=10 function=0
>   uart2
>   uart3
> 
> (If you want the complete output of devinfo just ask - I assumed from
> your question you only wanted the puc-releated section.)

Yeah, this is all I wanted.  Hmm, so from the description we can see that
it thinks you have 4 ports:

		snprintf(desc, sizeof(desc),
		    "Timedia technology %d Port Serial", (int)sc->sc_cfg_data);

and the code that sets sc_cfg_data sets it to the number of supported ports
that PUC_CFG_GET_NPORTS returns:

	case PUC_CFG_GET_NPORTS:
	...
				if (subdev == subdevs[dev].ids[id]) {
					sc->sc_cfg_data = subdevs[dev].ports;
					*res = sc->sc_cfg_data;
					return (0);
				}

You might need to just add some printfs to puc_bfe_attach().  It would be good
to see if the PUC_CFG_GET_NPORTS request in attach also returned 4 in res (the
description string is set in puc_bfe_probe()).
 
> BTW I saw the patch for puc(4) you just posted to current at .  Is it worth
> me trying that?

That patch is just cosmetic.  It would be nice to have it tested, but it
won't fix your bug.

-- 
John Baldwin