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      1 /*	$NetBSD: sbdio.c,v 1.7 2021/08/07 16:18:53 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2004, 2005 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      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: sbdio.c,v 1.7 2021/08/07 16:18:53 thorpej Exp $");
     34 
     35 #define _EWS4800MIPS_BUS_DMA_PRIVATE
     36 
     37 #include <sys/param.h>
     38 #include <sys/bus.h>
     39 #include <sys/device.h>
     40 #include <sys/systm.h>
     41 
     42 #include <mips/locore.h>
     43 
     44 #include <machine/autoconf.h>
     45 #include <machine/sbdvar.h>
     46 #include <machine/sbdiovar.h>
     47 
     48 #include "ioconf.h"
     49 
     50 struct sbdio_softc {
     51 	device_t sc_dev;
     52 	struct ews4800mips_bus_space sc_bus_tag;
     53 	struct ews4800mips_bus_dma_tag sc_dma_tag;
     54 };
     55 
     56 static int sbdio_match(device_t, cfdata_t, void *);
     57 static void sbdio_attach(device_t, device_t, void *);
     58 static int sbdio_print(void *, const char *);
     59 
     60 CFATTACH_DECL_NEW(sbdio, sizeof(struct sbdio_softc),
     61     sbdio_match, sbdio_attach, NULL, NULL);
     62 
     63 static int sbdio_found;
     64 
     65 int
     66 sbdio_match(device_t parent, cfdata_t cf, void *aux)
     67 {
     68 	struct mainbus_attach_args *ma = aux;
     69 
     70 	if (sbdio_found != 0)
     71 		return 0;
     72 
     73 	if (strcmp(ma->ma_name, sbdio_cd.cd_name) != 0)
     74 		return 0;
     75 
     76 	if (platform.sbdiodevs == NULL)
     77 		return 0;
     78 
     79 	return 1;
     80 }
     81 
     82 void
     83 sbdio_attach(device_t parent, device_t self, void *aux)
     84 {
     85 	struct sbdio_softc *sc = device_private(self);
     86 	struct sbdio_attach_args sa;
     87 	const struct sbdiodevdesc *sd;
     88 
     89 	sbdio_found = 1;
     90 
     91 	sc->sc_dev = self;
     92 	aprint_normal("\n");
     93 
     94 	/* structure assignment */
     95 	sc->sc_dma_tag = ews4800mips_default_bus_dma_tag;
     96 
     97 	bus_space_create(&sc->sc_bus_tag, device_xname(sc->sc_dev),
     98 	    MIPS_KSEG1_START, MIPS_KSEG2_START - MIPS_KSEG1_START); /* XXX */
     99 
    100 	for (sd = platform.sbdiodevs; sd->sd_name != NULL; sd++) {
    101 		sa.sa_name  = sd->sd_name;
    102 		sa.sa_bust  = &sc->sc_bus_tag;
    103 		sa.sa_dmat  = &sc->sc_dma_tag;
    104 		sa.sa_addr1 = sd->sd_addr1;
    105 		sa.sa_addr2 = sd->sd_addr2;
    106 		sa.sa_irq   = sd->sd_irq;
    107 		sa.sa_flags = sd->sd_flags;
    108 		config_found(self, &sa, sbdio_print, CFARGS_NONE);
    109 	}
    110 }
    111 
    112 int
    113 sbdio_print(void *aux, const char *pnp)
    114 {
    115 	struct sbdio_attach_args *sa = aux;
    116 
    117 	if (sa->sa_addr1 != (paddr_t)-1) {
    118 		aprint_normal(" at %#"PRIxPADDR, sa->sa_addr1);
    119 		if (sa->sa_addr2 != (paddr_t)-1)
    120 			aprint_normal(", %#"PRIxPADDR, sa->sa_addr2);
    121 	}
    122 	if (sa->sa_irq != -1)
    123 		aprint_normal(" irq %d", sa->sa_irq);
    124 
    125 	return pnp ? QUIET : UNCONF;
    126 }
    127