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Annotation of sys/arch/hppa/gsc/com_gsc.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: com_gsc.c,v 1.21 2007/07/15 19:25:49 kettenis Exp $   */
                      2:
                      3: /*
                      4:  * Copyright (c) 1998-2003 Michael Shalayeff
                      5:  * All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  *
                     16:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     17:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     18:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     19:  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
                     20:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                     21:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
                     22:  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     23:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
                     24:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
                     25:  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
                     26:  * THE POSSIBILITY OF SUCH DAMAGE.
                     27:  */
                     28:
                     29: #include <sys/param.h>
                     30: #include <sys/systm.h>
                     31: #include <sys/device.h>
                     32: #include <sys/tty.h>
                     33:
                     34: #include <machine/bus.h>
                     35: #include <machine/intr.h>
                     36: #include <machine/iomod.h>
                     37: #include <machine/autoconf.h>
                     38:
                     39: #include <dev/ic/comreg.h>
                     40: #include <dev/ic/comvar.h>
                     41:
                     42: #include <hppa/dev/cpudevs.h>
                     43: #include <hppa/gsc/gscbusvar.h>
                     44:
                     45: #define COM_GSC_FREQ   7372800
                     46:
                     47: struct com_gsc_regs {
                     48:        u_int8_t reset;
                     49: };
                     50:
                     51: int    com_gsc_probe(struct device *, void *, void *);
                     52: void   com_gsc_attach(struct device *, struct device *, void *);
                     53:
                     54: struct cfattach com_gsc_ca = {
                     55:        sizeof(struct com_softc), com_gsc_probe, com_gsc_attach
                     56: };
                     57:
                     58: int
                     59: com_gsc_probe(parent, match, aux)
                     60:        struct device *parent;
                     61:        void *match, *aux;
                     62: {
                     63:        struct gsc_attach_args *ga = aux;
                     64:
                     65:        if (ga->ga_type.iodc_type != HPPA_TYPE_FIO ||
                     66:            (ga->ga_type.iodc_sv_model != HPPA_FIO_GRS232 &&
                     67:             ga->ga_type.iodc_sv_model != HPPA_FIO_RS232 &&
                     68:             ga->ga_type.iodc_sv_model != HPPA_FIO_GRJ16))
                     69:                return (0);
                     70:
                     71:        return (1);
                     72:        /* HOZER comprobe1(ga->ga_iot, ga->ga_hpa + IOMOD_DEVOFFSET); */
                     73: }
                     74:
                     75: void
                     76: com_gsc_attach(parent, self, aux)
                     77:        struct device *parent, *self;
                     78:        void *aux;
                     79: {
                     80:        struct com_softc *sc = (void *)self;
                     81:        struct gsc_attach_args *ga = aux;
                     82:
                     83:        sc->sc_iot = ga->ga_iot;
                     84:        sc->sc_iobase = (bus_addr_t)ga->ga_hpa;
                     85:        if (ga->ga_type.iodc_sv_model != HPPA_FIO_GRJ16)
                     86:                sc->sc_iobase += IOMOD_DEVOFFSET;
                     87:
                     88:        if (bus_space_map(sc->sc_iot, sc->sc_iobase, COM_NPORTS,
                     89:            0, &sc->sc_ioh)) {
                     90:                printf(": cannot map io space\n");
                     91:                return;
                     92:        }
                     93:
                     94:        if (PAGE0->mem_cons.pz_class == PCL_DUPLEX &&
                     95:            PAGE0->mem_cons.pz_hpa == ga->ga_hpa) {
                     96:                bus_space_unmap(sc->sc_iot, sc->sc_ioh, COM_NPORTS);
                     97:                comcnattach(sc->sc_iot, sc->sc_iobase, comdefaultrate,
                     98:                    COM_GSC_FREQ, comconscflag);
                     99:        }
                    100:
                    101:        sc->sc_frequency = COM_GSC_FREQ;
                    102:        com_attach_subr(sc);
                    103:
                    104:        sc->sc_ih = gsc_intr_establish((struct gsc_softc *)parent,
                    105:            ga->ga_irq, IPL_TTY, comintr, sc, sc->sc_dev.dv_xname);
                    106: }