/* $OpenBSD: fooip.c,v 1.9 2004/07/30 22:29:44 miod Exp $ */ /* * Copyright (c) 1995 Theo de Raadt * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * A sample framework for writing an IP module driver. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct fooipregs { volatile u_char fooip_reg1; volatile u_char fooip_vec; }; struct fooipsoftc { struct device sc_dev; struct ipicsoftc *sc_ipicsc; struct intrhand sc_ih; int sc_slot; struct fooipregs *sc_regs; }; void fooipattach(struct device *, struct device *, void *); int fooipmatch(struct device *, void *, void *); struct cfattach fooip_ca = { sizeof(struct fooipsoftc), fooipmatch, fooipattach }; struct cfdriver fooip_cd = { NULL, "fooip", DV_DULL }; int fooipintr(void *); int fooipmatch(parent, cf, args) struct device *parent; void *cf; void *args; { return (1); } void fooipattach(parent, self, args) struct device *parent, *self; void *args; { struct fooipsoftc *sc = (struct fooipsoftc *)self; struct confargs *ca = args; sc->sc_ipicsc = (struct ipicsoftc *)parent; sc->sc_regs = (struct fooipregs *)(ca->ca_vaddr + IPIC_IP_REGOFFSET); sc->sc_slot = ca->ca_offset; /* this device uses only one interrupt */ sc->sc_ih.ih_fn = fooipintr; sc->sc_ih.ih_arg = sc; sc->sc_ih.ih_ipl = ca->ca_ipl; ipicintr_establish(ca->ca_vec, &sc->sc_ih, self->dv_xname); sc->sc_regs->fooip_vec = ca->ca_vec; sc->sc_ipicsc->sc_ipic->ipic_irq[sc->sc_slot][0] = ca->ca_ipl | IPIC_IRQ_ICLR | IPIC_IRQ_IEN; printf("\n"); } int fooipintr(arg) void *arg; { struct fooipsoftc *sc = arg; if (sc->sc_ipicsc->sc_ipic->ipic_irq[sc->sc_slot][0] & IPIC_IRQ_INT) { /* clear interrupt on device */ return (1); } return (0); }