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sbdio.c revision 1.3 
      1 /*	$NetBSD: sbdio.c,v 1.3 2008/04/28 20:23:18 martin 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 1.3 2008/04/28 20:23:18 martin Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/device.h>
     38 
     39 #include <machine/autoconf.h>
     40 #define _EWS4800MIPS_BUS_DMA_PRIVATE
     41 #include <machine/bus.h>
     42 #include <machine/sbdvar.h>
     43 #include <machine/sbdiovar.h>
     44 
     45 #include "ioconf.h"
     46 
     47 struct sbdio_softc {
     48 	device_t sc_dev;
     49 	struct ews4800mips_bus_space sc_bus_tag;
     50 	struct ews4800mips_bus_dma_tag sc_dma_tag;
     51 };
     52 
     53 static int sbdio_match(device_t, cfdata_t, void *);
     54 static void sbdio_attach(device_t, device_t, void *);
     55 static int sbdio_print(void *, const char *);
     56 
     57 CFATTACH_DECL_NEW(sbdio, sizeof(struct sbdio_softc),
     58     sbdio_match, sbdio_attach, NULL, NULL);
     59 
     60 static int sbdio_found;
     61 
     62 int
     63 sbdio_match(device_t parent, cfdata_t cf, void *aux)
     64 {
     65 	struct mainbus_attach_args *ma = aux;
     66 
     67 	if (sbdio_found != 0)
     68 		return 0;
     69 
     70 	if (strcmp(ma->ma_name, sbdio_cd.cd_name) != 0)
     71 		return 0;
     72 
     73 	if (platform.sbdiodevs == NULL)
     74 		return 0;
     75 
     76 	return 1;
     77 }
     78 
     79 void
     80 sbdio_attach(device_t parent, device_t self, void *aux)
     81 {
     82 	struct sbdio_softc *sc = device_private(self);
     83 	struct sbdio_attach_args sa;
     84 	const struct sbdiodevdesc *sd;
     85 
     86 	sbdio_found = 1;
     87 
     88 	sc->sc_dev = self;
     89 	aprint_normal("\n");
     90 
     91 	/* structure assignment */
     92 	sc->sc_dma_tag = ews4800mips_default_bus_dma_tag;
     93 
     94 	bus_space_create(&sc->sc_bus_tag, device_xname(sc->sc_dev),
     95 	    MIPS_KSEG1_START, MIPS_KSEG2_START - MIPS_KSEG1_START); /* XXX */
     96 
     97 	for (sd = platform.sbdiodevs; sd->sd_name != NULL; sd++) {
     98 		sa.sa_name  = sd->sd_name;
     99 		sa.sa_bust  = &sc->sc_bus_tag;
    100 		sa.sa_dmat  = &sc->sc_dma_tag;
    101 		sa.sa_addr1 = sd->sd_addr1;
    102 		sa.sa_addr2 = sd->sd_addr2;
    103 		sa.sa_irq   = sd->sd_irq;
    104 		sa.sa_flags = sd->sd_flags;
    105 		config_found(self, &sa, sbdio_print);
    106 	}
    107 }
    108 
    109 int
    110 sbdio_print(void *aux, const char *pnp)
    111 {
    112 	struct sbdio_attach_args *sa = aux;
    113 
    114 	if (sa->sa_addr1 != (paddr_t)-1) {
    115 		aprint_normal(" at 0x%lx", sa->sa_addr1);
    116 		if (sa->sa_addr2 != (paddr_t)-1)
    117 			aprint_normal(", 0x%lx", sa->sa_addr2);
    118 	}
    119 	if (sa->sa_irq != -1)
    120 		aprint_normal(" irq %d", sa->sa_irq);
    121 
    122 	return pnp ? QUIET : UNCONF;
    123 }
    124