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Annotation of sys/arch/hppa/dev/com_ssio.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: com_ssio.c,v 1.2 2007/06/24 16:28:39 kettenis Exp $   */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 2007 Mark Kettenis
        !             5:  *
        !             6:  * Permission to use, copy, modify, and distribute this software for any
        !             7:  * purpose with or without fee is hereby granted, provided that the above
        !             8:  * copyright notice and this permission notice appear in all copies.
        !             9:  *
        !            10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !            11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
        !            15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
        !            16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            17:  */
        !            18:
        !            19: #include <sys/param.h>
        !            20: #include <sys/systm.h>
        !            21: #include <sys/device.h>
        !            22: #include <sys/tty.h>
        !            23:
        !            24: #include <machine/bus.h>
        !            25: #include <machine/iomod.h>
        !            26:
        !            27: #include <dev/ic/comreg.h>
        !            28: #include <dev/ic/comvar.h>
        !            29:
        !            30: #include <hppa/dev/ssiovar.h>
        !            31:
        !            32: #define COM_SSIO_FREQ  1843200
        !            33:
        !            34: int com_ssio_match(struct device *, void *, void *);
        !            35: void com_ssio_attach(struct device *, struct device *, void *);
        !            36:
        !            37: struct cfattach com_ssio_ca = {
        !            38:        sizeof(struct com_softc), com_ssio_match, com_ssio_attach
        !            39: };
        !            40:
        !            41: int
        !            42: com_ssio_match(struct device *parent, void *match, void *aux)
        !            43: {
        !            44:        struct cfdata *cf = match;
        !            45:        struct ssio_attach_args *saa = aux;
        !            46:
        !            47:        if (strcmp(saa->saa_name, "com") != 0)
        !            48:                return (0);
        !            49:
        !            50:        /* Check locators. */
        !            51:        if (cf->ssiocf_irq != SSIO_UNK_IRQ && cf->ssiocf_irq != saa->saa_irq)
        !            52:                return (0);
        !            53:
        !            54:        return (1);
        !            55: }
        !            56:
        !            57: void
        !            58: com_ssio_attach(struct device *parent, struct device *self, void *aux)
        !            59: {
        !            60:        struct com_softc *sc = (void *)self;
        !            61:        struct ssio_attach_args *saa = aux;
        !            62:
        !            63:        sc->sc_iot = saa->saa_iot;
        !            64:        sc->sc_iobase = saa->saa_iobase;
        !            65:        if (bus_space_map(sc->sc_iot, sc->sc_iobase, COM_NPORTS,
        !            66:            0, &sc->sc_ioh)) {
        !            67:                printf(": cannot map io space\n");
        !            68:                return;
        !            69:        }
        !            70:
        !            71:        if (PAGE0->mem_cons.pz_class == PCL_DUPLEX &&
        !            72:            PAGE0->mem_cons.pz_hpa == sc->sc_ioh) {
        !            73:                bus_space_unmap(sc->sc_iot, sc->sc_ioh, COM_NPORTS);
        !            74:                comcnattach(sc->sc_iot, sc->sc_iobase, comdefaultrate,
        !            75:                    COM_SSIO_FREQ, comconscflag);
        !            76:        }
        !            77:
        !            78:        sc->sc_frequency = COM_SSIO_FREQ;
        !            79:        com_attach_subr(sc);
        !            80:
        !            81:        sc->sc_ih = ssio_intr_establish(IPL_TTY, saa->saa_irq,
        !            82:            comintr, sc, sc->sc_dev.dv_xname);
        !            83: }