/* $NetBSD: com_isa.c,v 1.23 2005/02/04 02:10:40 perry Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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. */ /*- * Copyright (c) 1991 The Regents of the University of California. * 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)com.c 7.5 (Berkeley) 5/16/91 */ #include __KERNEL_RCSID(0, "$NetBSD: com_isa.c,v 1.23 2005/02/04 02:10:40 perry Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct com_isa_softc { struct com_softc sc_com; /* real "com" softc */ /* ISA-specific goo. */ void *sc_ih; /* interrupt handler */ }; int com_isa_probe(struct device *, struct cfdata *, void *); void com_isa_attach(struct device *, struct device *, void *); void com_isa_cleanup(void *); CFATTACH_DECL(com_isa, sizeof(struct com_isa_softc), com_isa_probe, com_isa_attach, NULL, NULL); int com_isa_probe(parent, match, aux) struct device *parent; struct cfdata *match; void *aux; { bus_space_tag_t iot; bus_space_handle_t ioh; int iobase; int rv = 1; struct isa_attach_args *ia = aux; if (ia->ia_nio < 1) return (0); if (ia->ia_nirq < 1) return (0); if (ISA_DIRECT_CONFIG(ia)) return (0); /* Disallow wildcarded i/o address. */ if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) return (0); /* Don't allow wildcarded IRQ. */ if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) return (0); iot = ia->ia_iot; iobase = ia->ia_io[0].ir_addr; /* if it's in use as console, it's there. */ if (!com_is_console(iot, iobase, 0)) { if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { return 0; } rv = comprobe1(iot, ioh); bus_space_unmap(iot, ioh, COM_NPORTS); } if (rv) { ia->ia_nio = 1; ia->ia_io[0].ir_size = COM_NPORTS; ia->ia_nirq = 1; ia->ia_niomem = 0; ia->ia_ndrq = 0; } return (rv); } void com_isa_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct com_isa_softc *isc = (void *)self; struct com_softc *sc = &isc->sc_com; int iobase, irq; bus_space_tag_t iot; struct isa_attach_args *ia = aux; /* * We're living on an isa. */ iobase = sc->sc_iobase = ia->ia_io[0].ir_addr; iot = sc->sc_iot = ia->ia_iot; if (!com_is_console(iot, iobase, &sc->sc_ioh) && bus_space_map(iot, iobase, COM_NPORTS, 0, &sc->sc_ioh)) { printf(": can't map i/o space\n"); return; } sc->sc_frequency = COM_FREQ; irq = ia->ia_irq[0].ir_irq; com_attach_subr(sc); isc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE, IPL_SERIAL, comintr, sc); /* * Shutdown hook for buggy BIOSs that don't recognize the UART * without a disabled FIFO. */ if (shutdownhook_establish(com_isa_cleanup, sc) == NULL) panic("com_isa_attach: could not establish shutdown hook"); } void com_isa_cleanup(arg) void *arg; { struct com_softc *sc = arg; if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0); }