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Annotation of sys/arch/aviion/dev/dart_syscon.c, Revision 1.1.1.1

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: }