sys/arch/ews4800mips/sbd/sbdio.c

   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 %#"PRIxPADDR, sa->sa_addr1);
 116                 if (sa->sa_addr2 != (paddr_t)-1)
 117                         aprint_normal(", %#"PRIxPADDR, 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 }