Date: Tue, 16 Mar 2004 16:03:21 +0100 From: thefly <thefly@acaro.org> To: freebsd-hackers@freebsd.org Subject: bus_alloc_resource() returns NULL, but why? Message-ID: <20040316150321.GA4900@tyler>
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Hi, i'm currently porting QuanCom PWDOG1 Watchdog card to FreeBSD, (you can find the current code at http://chiakotay.nexlab.it/acaro/pwdog.c). I defined my softc struct: struct pwdog1_softc { bus_space_tag_t bst; bus_space_handle_t bsh; struct resource *res; int rid; }; In my attach() function i do NewBus initialization: sc = (struct pwdog1_softc *) device_get_softc(dev); sc->rid = 0; sc->res = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->rid, 0, ~0, 1, RF_ACTIVE); sc->bst = rman_get_bustag(sc->res); sc->bsh = rman_get_bushandle(sc->res); but the problem is that bus_alloc_resource() returns NULL. I don't have a clue about WHY it should. It's running on: FreeBSD 5.2.1-RELEASE with GENERIC kernel in a dual pentium 200MMX. Thanks in advance -- Claudio "thefly" Martella thefly@acaro.org GNU/PG keyid: 0x8EA95625
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