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Annotation of sys/arch/hppa/dev/uturn.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: uturn.c,v 1.3 2005/04/07 00:21:51 mickey Exp $        */
                      2:
                      3: /*
                      4:  * Copyright (c) 2004 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: /* TODO IOA programming */
                     30:
                     31: #include <sys/param.h>
                     32: #include <sys/systm.h>
                     33: #include <sys/device.h>
                     34: #include <sys/reboot.h>
                     35:
                     36: #include <machine/iomod.h>
                     37: #include <machine/autoconf.h>
                     38:
                     39: #include <hppa/dev/cpudevs.h>
                     40:
                     41: struct uturn_regs {
                     42:        u_int64_t       resv0[2];
                     43:        u_int64_t       status;         /* 0x10: */
                     44:        u_int64_t       resv1[5];
                     45:        u_int64_t       debug;          /* 0x40: */
                     46: };
                     47:
                     48: struct uturn_softc {
                     49:        struct device sc_dv;
                     50:
                     51:        struct uturn_regs volatile *sc_regs;
                     52: };
                     53:
                     54: int    uturnmatch(struct device *, void *, void *);
                     55: void   uturnattach(struct device *, struct device *, void *);
                     56:
                     57: struct cfattach uturn_ca = {
                     58:        sizeof(struct uturn_softc), uturnmatch, uturnattach
                     59: };
                     60:
                     61: struct cfdriver uturn_cd = {
                     62:        NULL, "uturn", DV_DULL
                     63: };
                     64:
                     65: int
                     66: uturnmatch(parent, cfdata, aux)
                     67:        struct device *parent;
                     68:        void *cfdata;
                     69:        void *aux;
                     70: {
                     71:        struct confargs *ca = aux;
                     72:        /* struct cfdata *cf = cfdata; */
                     73:
                     74:        /* there will be only one */
                     75:        if (ca->ca_type.iodc_type != HPPA_TYPE_IOA ||
                     76:            ca->ca_type.iodc_sv_model != HPPA_IOA_UTURN)
                     77:                return 0;
                     78:
                     79:        if (ca->ca_type.iodc_model == 0x58 &&
                     80:            ca->ca_type.iodc_revision >= 0x20)
                     81:                return 0;
                     82:
                     83:        return 1;
                     84: }
                     85:
                     86: void
                     87: uturnattach(parent, self, aux)
                     88:        struct device *parent;
                     89:        struct device *self;
                     90:        void *aux;
                     91: {
                     92:        struct confargs *ca = aux, nca;
                     93:        struct uturn_softc *sc = (struct uturn_softc *)self;
                     94:        bus_space_handle_t ioh;
                     95:
                     96:        if (bus_space_map(ca->ca_iot, ca->ca_hpa, IOMOD_HPASIZE, 0, &ioh)) {
                     97:                printf(": can't map IO space\n");
                     98:                return;
                     99:        }
                    100:        sc->sc_regs = (struct uturn_regs *)ca->ca_hpa;
                    101:
                    102:        printf(": %s rev %d\n",
                    103:            ca->ca_type.iodc_revision < 0x10? "U2" : "UTurn",
                    104:            ca->ca_type.iodc_revision & 0xf);
                    105:
                    106:        /* keep it real */
                    107:        ((struct iomod *)ioh)->io_control = 0x80;
                    108:
                    109:        nca = *ca;      /* clone from us */
                    110:        nca.ca_hpamask = HPPA_IOBEGIN;
                    111:        pdc_scanbus(self, &nca, MAXMODBUS, 0);
                    112: }