1 /* $NetBSD: uni-n.c,v 1.13 2022/12/28 07:18:29 macallan 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 1.13 2022/12/28 07:18:29 macallan 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 #include <dev/ofw/ofw_pci.h> 43 44 #include <machine/autoconf.h> 45 46 #include "fcu.h" 47 48 static void uni_n_attach(device_t, device_t, void *); 49 static int uni_n_match(device_t, cfdata_t, void *); 50 static int uni_n_print(void *, const char *); 51 52 struct uni_n_softc { 53 device_t sc_dev; 54 struct powerpc_bus_space sc_memt; 55 int sc_node; 56 }; 57 58 CFATTACH_DECL_NEW(uni_n, sizeof(struct uni_n_softc), 59 uni_n_match, uni_n_attach, NULL, NULL); 60 61 #if NFCU > 0 62 /* storage for CPUID SEEPROM contents found on some G5 */ 63 static uint8_t eeprom[2][160]; 64 #endif 65 66 static const char *skiplist[] = { 67 "openpic", 68 "chrp,open-pic", 69 "open-pic", 70 "mpic", 71 "dart", 72 "u3-dart", 73 "u4-dart", 74 NULL 75 }; 76 77 int 78 uni_n_match(device_t parent, cfdata_t cf, void *aux) 79 { 80 struct confargs *ca = aux; 81 char compat[32]; 82 if ((strcmp(ca->ca_name, "uni-n") != 0) && 83 (strcmp(ca->ca_name, "u4") != 0) && 84 (strcmp(ca->ca_name, "u3") != 0)) 85 return 0; 86 87 memset(compat, 0, sizeof(compat)); 88 #if 0 89 OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat)); 90 if (strcmp(compat, "uni-north") != 0) 91 return 0; 92 #endif 93 return 1; 94 } 95 96 /* 97 * Attach all the sub-devices we can find 98 */ 99 void 100 uni_n_attach(device_t parent, device_t self, void *aux) 101 { 102 struct uni_n_softc *sc = device_private(self); 103 struct confargs *our_ca = aux; 104 struct confargs ca; 105 int node, child, namelen; 106 #if NFCU > 0 107 int cpuid; 108 #endif 109 u_int reg[20]; 110 int intr[6]; 111 char name[32]; 112 113 sc->sc_dev = self; 114 node = our_ca->ca_node; 115 sc->sc_node = node; 116 printf(" address 0x%08x\n", 117 our_ca->ca_reg[our_ca->ca_nreg > 8 ? 1 : 0]); 118 119 #if NFCU > 0 120 /* 121 * zero out eeprom blocks, then see if we have valid data 122 * doing this here because the EEPROMs are dangling from our i2c bus 123 * but we can get all the data just from looking at the properties 124 */ 125 memset(eeprom, 0, sizeof(eeprom)); 126 cpuid = OF_finddevice("/u3/i2c/cpuid@a0"); 127 OF_getprop(cpuid, "cpuid", eeprom[0], sizeof(eeprom[0])); 128 if (eeprom[0][1] != 0) 129 aprint_normal_dev(self, "found EEPROM data for CPU 0\n"); 130 131 cpuid = OF_finddevice("/u3/i2c/cpuid@a2"); 132 OF_getprop(cpuid, "cpuid", eeprom[1], sizeof(eeprom[1])); 133 if (eeprom[1][1] != 0) 134 aprint_normal_dev(self, "found EEPROM data for CPU 1\n"); 135 #endif 136 137 memset(&sc->sc_memt, 0, sizeof(struct powerpc_bus_space)); 138 sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE; 139 if (ofwoea_map_space(RANGE_TYPE_MACIO, RANGE_MEM, node, &sc->sc_memt, 140 "uni-n mem-space") != 0) { 141 panic("Can't init uni-n mem tag"); 142 } 143 144 devhandle_t selfh = device_handle(self); 145 for (child = OF_child(node); child; child = OF_peer(child)) { 146 if (of_compatible(child, skiplist)) continue; 147 namelen = OF_getprop(child, "name", name, sizeof(name)); 148 if (namelen < 0) 149 continue; 150 if (namelen >= sizeof(name)) 151 continue; 152 153 name[namelen] = 0; 154 ca.ca_name = name; 155 ca.ca_node = child; 156 ca.ca_tag = &sc->sc_memt; 157 ca.ca_nreg = OF_getprop(child, "reg", reg, sizeof(reg)); 158 ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr, 159 sizeof(intr)); 160 if (ca.ca_nintr == -1) 161 ca.ca_nintr = OF_getprop(child, "interrupts", intr, 162 sizeof(intr)); 163 164 ca.ca_reg = reg; 165 ca.ca_intr = intr; 166 config_found(self, &ca, uni_n_print, 167 CFARGS(.devhandle = devhandle_from_of(selfh, child))); 168 } 169 } 170 171 int 172 uni_n_print(void *aux, const char *uni_n) 173 { 174 struct confargs *ca = aux; 175 if (uni_n) 176 aprint_normal("%s at %s", ca->ca_name, uni_n); 177 178 if (ca->ca_nreg > 0) 179 aprint_normal(" address 0x%x", ca->ca_reg[0]); 180 181 return UNCONF; 182 } 183 184 #if NFCU > 0 185 int 186 get_cpuid(int cpu, uint8_t *buf) 187 { 188 if ((cpu < 0) || (cpu > 1)) return -1; 189 if (eeprom[cpu][1] == 0) return 0; 190 memcpy(buf, eeprom[cpu], sizeof(eeprom[cpu])); 191 return sizeof(eeprom[cpu]); 192 } 193 #endif 194
Indexes created Sat Sep 20 22:09:52 GMT 2025