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Annotation of sys/arch/armish/dev/obio.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: obio.c,v 1.3 2006/06/01 17:06:16 drahn Exp $  */
                      2: /*     $NetBSD: obio.c,v 1.14 2005/12/11 12:17:09 christos Exp $       */
                      3:
                      4: /*
                      5:  * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
                      6:  * All rights reserved.
                      7:  *
                      8:  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
                      9:  *
                     10:  * Redistribution and use in source and binary forms, with or without
                     11:  * modification, are permitted provided that the following conditions
                     12:  * are met:
                     13:  * 1. Redistributions of source code must retain the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer.
                     15:  * 2. Redistributions in binary form must reproduce the above copyright
                     16:  *    notice, this list of conditions and the following disclaimer in the
                     17:  *    documentation and/or other materials provided with the distribution.
                     18:  * 3. All advertising materials mentioning features or use of this software
                     19:  *    must display the following acknowledgement:
                     20:  *     This product includes software developed for the NetBSD Project by
                     21:  *     Wasabi Systems, Inc.
                     22:  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
                     23:  *    or promote products derived from this software without specific prior
                     24:  *    written permission.
                     25:  *
                     26:  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
                     27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     28:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     29:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
                     30:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     31:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     32:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     33:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     34:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     35:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     36:  * POSSIBILITY OF SUCH DAMAGE.
                     37:  */
                     38:
                     39: /*
                     40:  * On-board device autoconfiguration support for Intel IQ80321
                     41:  * evaluation boards.
                     42:  */
                     43:
                     44: #include <sys/param.h>
                     45: #include <sys/systm.h>
                     46: #include <sys/device.h>
                     47:
                     48: #include <machine/bus.h>
                     49:
                     50: #include <arm/mainbus/mainbus.h>
                     51: #include <arm/xscale/i80321reg.h>
                     52: #include <armish/dev/iq80321reg.h>
                     53: #include <armish/dev/iq80321var.h>
                     54: #include <armish/dev/obiovar.h>
                     55:
                     56: int    obio_match(struct device *, void *, void *);
                     57: void   obio_attach(struct device *, struct device *, void *);
                     58:
                     59: struct cfattach obio_ca = {
                     60:        sizeof(struct device), obio_match, obio_attach
                     61: };
                     62:
                     63: struct cfdriver obio_cd = {
                     64:        NULL, "obio", DV_DULL
                     65: };
                     66:
                     67: int    obio_print(void *, const char *);
                     68: int    obio_search(struct device *, void *, void *);
                     69:
                     70: /* there can be only one */
                     71: int    obio_found;
                     72:
                     73: int
                     74: obio_match(struct device *parent, void *match, void *aux)
                     75: {
                     76:        struct mainbus_attach_args *ma = aux;
                     77:        struct cfdata *cf = match;
                     78:
                     79:        if (obio_found)
                     80:                return (0);
                     81:
                     82:        if (strcmp(cf->cf_driver->cd_name, ma->ma_name) == 0)
                     83:                return (1);
                     84:
                     85:        return (0);
                     86: }
                     87:
                     88: void
                     89: obio_attach(struct device *parent, struct device *self, void *aux)
                     90: {
                     91:         struct device *sc = self;
                     92:
                     93:
                     94:        obio_found = 1;
                     95:
                     96:        printf("\n");
                     97:
                     98:        /*
                     99:         * Attach all the on-board devices as described in the kernel
                    100:         * configuration file.
                    101:         */
                    102:        config_search(obio_search, self, sc);
                    103: }
                    104:
                    105: int
                    106: obio_print(void *aux, const char *pnp)
                    107: {
                    108:        struct obio_attach_args *oba = aux;
                    109:
                    110:        printf(" addr 0x%08lx", oba->oba_addr);
                    111:
                    112:         if (oba->oba_irq != -1)
                    113:                 printf(" intr %d", oba->oba_irq);
                    114:
                    115:
                    116:        return (UNCONF);
                    117: }
                    118:
                    119: int
                    120: obio_search(struct device *parent, void *v, void *aux)
                    121: {
                    122:        struct obio_attach_args oba;
                    123:        struct cfdata   *cf = v;
                    124:
                    125:        oba.oba_st = &obio_bs_tag;
                    126:        oba.oba_addr = cf->cf_loc[0];
                    127:        oba.oba_size = cf->cf_loc[1];
                    128:        oba.oba_width = cf->cf_loc[2];
                    129:        if (cf->cf_loc[3] != -1)
                    130:                oba.oba_irq = ICU_INT_XINT(cf->cf_loc[3]);
                    131:        else
                    132:                oba.oba_irq = -1;
                    133:
                    134:        config_found(parent, &oba, obio_print);
                    135:
                    136:
                    137:        return (0);
                    138: }