1 /* $NetBSD: uni-n.c,v 1.4 2009/03/14 21:04:11 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 1.4 2009/03/14 21:04:11 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 } 128