Date: Mon, 12 Jul 2004 17:55:29 +0900 From: Pyun YongHyeon <yongari@kt-is.co.kr> To: freebsd-sparc64@freebsd.org Subject: Re: SBus/EBus auxio driver Message-ID: <20040712085529.GD656@kt-is.co.kr> In-Reply-To: <20040712081700.GA43691@ida.interface-business.de> References: <20040712081042.GB656@kt-is.co.kr> <20040712081700.GA43691@ida.interface-business.de>
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On Mon, Jul 12, 2004 at 10:17:00AM +0200, Joerg Wunsch wrote: > As Pyun YongHyeon wrote: > > > This is an auxio driver for SBus/EBus based sparc64 systems. > > The driver controls front panel LED. By setting an OID > > "machdep.auxio_led_blink" with sysctl(8), the LED is made to > > blink based on system load average. > > I once wrote my own auxio driver, basically as a first attempt to get > acquainted to FreeBSD/sparc64 drivers at all, since <auxio> is really > a fairly simple hardware to handle. > > Now that I've noticed FreeBSD's led(4) driver, I think it would be > done better by registering a led instance on auxio, as opposed to > hardcoding some functionality into the driver. > Yes, LED itself is very simple. But, as you know, there are other auxio ports are defined in PCI address space.(SBus has a just one auxio, LED.) I can't find available documentation for these I/O ports. > Anyway, my (currently stalled) attempts to access all the I²C hardware > using a pcf(4) instance of SUNW,envctrl made me dismiss the idea of an > auxio driver: while auxio can only drive one out of the six LEDs on > the front panel of my E450, the I²C-controlled parallel port could > drive all of them. All the remaining ports assigned to <auxio> are > quite uninteresting anyway. > It seems that led(4) is for user-land applications and just for LED only. I guess additional coding for auxio(4) is possible if I can get more documentation. Don't know the existence of iicbus(4), atm. Ultra2 doesn't have it. > -- > J"org Wunsch Unix support engineer > joerg_wunsch@interface-systems.de http://www.interface-systems.de/~j/ Regards, Pyun YongHyeon -- Pyun YongHyeon <http://www.kr.freebsd.org/~yongari>;
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