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obio.c revision 1.18 
      1 /*	$NetBSD: obio.c,v 1.18 2021/04/24 23:36:43 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Wayne Knowles
      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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: obio.c,v 1.18 2021/04/24 23:36:43 thorpej Exp $");
     34 
     35 #include "locators.h"
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/device.h>
     40 
     41 #include <machine/autoconf.h>
     42 #include <machine/mainboard.h>
     43 #include <machine/bus.h>
     44 #include <machine/sysconf.h>
     45 
     46 static int	obio_match(device_t, cfdata_t, void *);
     47 static void	obio_attach(device_t, device_t, void *);
     48 static int	obio_search(device_t, cfdata_t, const int *, void *);
     49 static int	obio_print(void *, const char *);
     50 static void	obio_intr_establish(bus_space_tag_t, int, int, int,
     51 		    int (*)(void *), void *);
     52 
     53 CFATTACH_DECL_NEW(obio, 0,
     54     obio_match, obio_attach, NULL, NULL);
     55 
     56 extern struct cfdriver obio_cd;
     57 
     58 struct mipsco_bus_space obio_bustag;
     59 struct mipsco_bus_dma_tag obio_dmatag;
     60 
     61 static int
     62 obio_match(device_t parent, cfdata_t cf, void *aux)
     63 {
     64 	struct confargs *ca = aux;
     65 
     66 	if (strcmp(ca->ca_name, obio_cd.cd_name) != 0)
     67 		return 0;
     68 
     69 	return 1;
     70 }
     71 
     72 static void
     73 obio_attach(device_t parent, device_t self, void *aux)
     74 {
     75 	struct confargs *ca = aux;
     76 
     77 	/* PIZAZZ (Mips 3000 Magnum)  Address Map */
     78 	mipsco_bus_space_init(&obio_bustag, "obio",
     79 			      0x18000000, 0xb8000000,
     80 			      0xb8000000, 0x08000000);
     81 
     82 	_bus_dma_tag_init(&obio_dmatag);
     83 	obio_bustag.bs_intr_establish = obio_intr_establish; /* XXX */
     84 
     85 	ca->ca_bustag = &obio_bustag;
     86 	ca->ca_dmatag = &obio_dmatag;
     87 
     88 	printf("\n");
     89 	config_search(self, ca,
     90 	    CFARG_SEARCH, obio_search,
     91 	    CFARG_EOL);
     92 }
     93 
     94 static int
     95 obio_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
     96 {
     97 	struct confargs *ca = aux;
     98 
     99 	ca->ca_addr = cf->cf_addr;
    100 	ca->ca_name = cf->cf_name;
    101 
    102 	if (config_probe(parent, cf, ca))
    103 		config_attach(parent, cf, ca, obio_print, CFARG_EOL);
    104 
    105 	return 0;
    106 }
    107 
    108 /*
    109  * Print out the confargs.  The (parent) name is non-NULL
    110  * when there was no match found by config_found().
    111  */
    112 static int
    113 obio_print(void *args, const char *name)
    114 {
    115 	struct confargs *ca = args;
    116 
    117 	if (name)
    118 		return(QUIET);
    119 
    120 	if (ca->ca_addr != -1)
    121 		aprint_normal(" addr 0x%x", ca->ca_addr);
    122 
    123 	return(UNCONF);
    124 }
    125 
    126 void
    127 obio_intr_establish(bus_space_tag_t bst, int level, int pri, int flags,
    128 	int (*func)(void *), void *arg)
    129 {
    130 	(*platform.intr_establish)(level, func, arg);
    131 }
    132