sys/arch/macppc/dev/uni-n.c

   1 /*      $NetBSD: uni-n.c,v 1.3 2009/03/14 15:36:09 dsl Exp $    */
   2
   3 /*-
   4  * Copyright (C) 2005 Michael Lorenz.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /*
  30  * a driver to match the uni_n node in OF's device tree and attach its children
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: uni-n.c,v 1.3 2009/03/14 15:36:09 dsl Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/kernel.h>
  39 #include <sys/device.h>
  40
  41 #include <dev/ofw/openfirm.h>
  42
  43 #include <machine/autoconf.h>
  44
  45 static void uni_n_attach(struct device *, struct device *, void *);
  46 static int uni_n_match(struct device *, struct cfdata *, void *);
  47 static int uni_n_print(void *, const char *);
  48
  49 struct uni_n_softc {
  50         struct device sc_dev;
  51         int sc_node;
  52 };
  53
  54 CFATTACH_DECL(uni_n, sizeof(struct uni_n_softc),
  55     uni_n_match, uni_n_attach, NULL, NULL);
  56
  57 int
  58 uni_n_match(struct device *parent, struct cfdata *cf, void *aux)
  59 {
  60         struct confargs *ca = aux;
  61         char compat[32];
  62         if (strcmp(ca->ca_name, "uni-n") != 0)
  63                 return 0;
  64
  65         memset(compat, 0, sizeof(compat));
  66         OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat));
  67         if (strcmp(compat, "uni-north") != 0)
  68                 return 0;
  69
  70         return 1;
  71 }
  72
  73 /*
  74  * Attach all the sub-devices we can find
  75  */
  76 void
  77 uni_n_attach(struct device *parent, struct device *self, void *aux)
  78 {
  79         struct uni_n_softc *sc = (struct uni_n_softc *)self;
  80         struct confargs *our_ca = aux;
  81         struct confargs ca;
  82         int node, child, namelen;
  83         u_int reg[20];
  84         int intr[6];
  85         char name[32];
  86
  87         node = OF_finddevice("/uni-n");
  88         sc->sc_node = node;
  89         printf(" address 0x%08x\n",our_ca->ca_reg[0]);
  90
  91         for (child = OF_child(node); child; child = OF_peer(child)) {
  92                 namelen = OF_getprop(child, "name", name, sizeof(name));
  93                 if (namelen < 0)
  94                         continue;
  95                 if (namelen >= sizeof(name))
  96                         continue;
  97
  98                 name[namelen] = 0;
  99                 ca.ca_name = name;
 100                 ca.ca_node = child;
 101
 102                 ca.ca_nreg  = OF_getprop(child, "reg", reg, sizeof(reg));
 103                 ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr,
 104                                 sizeof(intr));
 105                 if (ca.ca_nintr == -1)
 106                         ca.ca_nintr = OF_getprop(child, "interrupts", intr,
 107                                         sizeof(intr));
 108
 109                 ca.ca_reg = reg;
 110                 ca.ca_intr = intr;
 111
 112                 config_found(self, &ca, uni_n_print);
 113         }
 114 }
 115
 116 int
 117 uni_n_print(void *aux, const char *uni_n)
 118 {
 119         struct confargs *ca = aux;
 120         if (uni_n)
 121                 aprint_normal("%s at %s", ca->ca_name, uni_n);
 122
 123         if (ca->ca_nreg > 0)
 124                 aprint_normal(" address 0x%x", ca->ca_reg[0]);
 125
 126         return UNCONF;
 127 }