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Annotation of sys/arch/aviion/dev/dart_syscon.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: dart_syscon.c,v 1.1.1.1 2006/05/09 18:13:37 miod Exp $        */
        !             2: /*
        !             3:  * Copyright (c) 2006, Miodrag Vallat
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  *
        !            14:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            15:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            16:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
        !            17:  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
        !            18:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        !            19:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        !            20:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            21:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
        !            22:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
        !            23:  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            24:  * POSSIBILITY OF SUCH DAMAGE.
        !            25:  */
        !            26:
        !            27: #include <sys/param.h>
        !            28: #include <sys/systm.h>
        !            29: #include <sys/device.h>
        !            30:
        !            31: #include <machine/autoconf.h>
        !            32: #include <machine/cpu.h>
        !            33:
        !            34: #include <machine/av400.h>
        !            35:
        !            36: #include <aviion/dev/sysconreg.h>
        !            37: #include <aviion/dev/dartvar.h>
        !            38:
        !            39: int    dart_syscon_match(struct device *parent, void *self, void *aux);
        !            40: void   dart_syscon_attach(struct device *parent, struct device *self, void *aux);
        !            41:
        !            42: struct cfattach dart_syscon_ca = {
        !            43:        sizeof(struct dartsoftc), dart_syscon_match, dart_syscon_attach
        !            44: };
        !            45:
        !            46: int
        !            47: dart_syscon_match(struct device *parent, void *cf, void *aux)
        !            48: {
        !            49:        struct confargs *ca = aux;
        !            50:        bus_space_handle_t ioh;
        !            51:        int rc;
        !            52:
        !            53:        /*
        !            54:         * We do not accept empty locators here...
        !            55:         */
        !            56:        if (ca->ca_paddr == (paddr_t)-1)
        !            57:                return (0);
        !            58:
        !            59:        if (bus_space_map(ca->ca_iot, ca->ca_paddr, DART_SIZE, 0, &ioh) != 0)
        !            60:                return (0);
        !            61:        rc = badaddr((vaddr_t)bus_space_vaddr(ca->ca_iot, ioh), 4);
        !            62:        bus_space_unmap(ca->ca_iot, ca->ca_paddr, DART_SIZE);
        !            63:
        !            64:        return (rc == 0);
        !            65: }
        !            66:
        !            67: void
        !            68: dart_syscon_attach(struct device *parent, struct device *self, void *aux)
        !            69: {
        !            70:        struct dartsoftc *sc = (struct dartsoftc *)self;
        !            71:        struct confargs *ca = aux;
        !            72:        bus_space_handle_t ioh;
        !            73:        u_int vec;
        !            74:
        !            75:        if (ca->ca_ipl < 0)
        !            76:                ca->ca_ipl = IPL_TTY;
        !            77:
        !            78:        sc->sc_iot = ca->ca_iot;
        !            79:        if (bus_space_map(sc->sc_iot, ca->ca_paddr, DART_SIZE, 0, &ioh) != 0) {
        !            80:                printf(": can't map registers!\n");
        !            81:                return;
        !            82:        }
        !            83:        sc->sc_ioh = ioh;
        !            84:
        !            85:        if (ca->ca_paddr == DART_BASE) {
        !            86:                vec = SYSCV_SCC;
        !            87:                sc->sc_console = 1;     /* XXX for now */
        !            88:                printf(": console");
        !            89:        } else {
        !            90:                vec = SYSCV_SCC2;
        !            91:                sc->sc_console = 0;
        !            92:        }
        !            93:
        !            94:        /* enable interrupts */
        !            95:        sc->sc_ih.ih_fn = dartintr;
        !            96:        sc->sc_ih.ih_arg = sc;
        !            97:        sc->sc_ih.ih_wantframe = 0;
        !            98:        sc->sc_ih.ih_ipl = ca->ca_ipl;
        !            99:
        !           100:        sysconintr_establish(vec, &sc->sc_ih, self->dv_xname);
        !           101:
        !           102:        dart_common_attach(sc);
        !           103: }