1 /* $NetBSD: cpunode.c,v 1.8 2021/08/07 16:19:02 thorpej Exp $ */ 2 /*- 3 * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Raytheon BBN Technologies Corp and Defense Advanced Research Projects 8 * Agency and which was developed by Matt Thomas of 3am Software Foundry. 9 * 10 * This material is based upon work supported by the Defense Advanced Research 11 * Projects Agency and Space and Naval Warfare Systems Center, Pacific, under 12 * Contract No. N66001-09-C-2073. 13 * Approved for Public Release, Distribution Unlimited 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: cpunode.c,v 1.8 2021/08/07 16:19:02 thorpej Exp $"); 39 40 #include "ioconf.h" 41 42 #include <sys/param.h> 43 #include <sys/device.h> 44 #include <sys/cpu.h> 45 46 #include <powerpc/booke/cpuvar.h> 47 48 static int cpunode_match(device_t, cfdata_t, void *); 49 static void cpunode_attach(device_t, device_t, void *); 50 51 CFATTACH_DECL_NEW(cpunode, sizeof(struct cpunode_softc), 52 cpunode_match, cpunode_attach, NULL, NULL); 53 54 static u_int nodes; 55 56 static int 57 cpunode_match(device_t parent, cfdata_t cf, void *aux) 58 { 59 struct mainbus_attach_args * const ma = aux; 60 if (strcmp(ma->ma_name, cpunode_cd.cd_name) != 0) 61 return 0; 62 63 if (ma->ma_node > 8 || (nodes & (1 << ma->ma_node))) 64 return 0; 65 66 return 1; 67 } 68 69 static int 70 cpunode_print(void *aux, const char *pnp) 71 { 72 struct cpunode_attach_args *cna = aux; 73 74 if (pnp) 75 #if 0 76 return QUIET; 77 #else 78 aprint_normal("%s at %s", cna->cna_locs.cnl_name, pnp); 79 #endif 80 81 if (cna->cna_locs.cnl_instance != 0) 82 aprint_normal(" instance %d", cna->cna_locs.cnl_instance); 83 84 return UNCONF; 85 } 86 87 static void 88 cpunode_attach(device_t parent, device_t self, void *aux) 89 { 90 const struct cpunode_locators *cnl = cpu_md_ops.md_cpunode_locs; 91 struct cpunode_softc * const sc = device_private(self); 92 struct mainbus_attach_args * const ma = aux; 93 struct cpunode_attach_args cna; 94 95 sc->sc_dev = self; 96 97 aprint_normal("\n"); 98 aprint_normal_dev(self, 99 "%"PRIu64"KB/%"PRIu64"B %"PRIu64"-banked %"PRIu64"-way unified L2 cache\n", 100 board_info_get_number("l2-cache-size") / 1024, 101 board_info_get_number("l2-cache-line-size"), 102 board_info_get_number("l2-cache-banks"), 103 board_info_get_number("l2-cache-ways")); 104 105 nodes |= 1 << ma->ma_node; 106 107 const uint16_t my_id = board_info_get_number("my-id"); 108 109 for (u_int childmask = 1; cnl->cnl_name != NULL; cnl++) { 110 bool inclusive = true; 111 bool found = (cnl->cnl_ids[0] == 0); 112 113 #if DEBUG > 1 114 aprint_normal_dev(self, "dev=%s[%u], addr=%x@%x", 115 cnl->cnl_name, cnl->cnl_instance, cnl->cnl_size, 116 cnl->cnl_addr); 117 if (cnl->cnl_nintr > 0) { 118 aprint_normal(", intrs=%u", cnl->cnl_intrs[0]); 119 for (u_int i = 1; i < cnl->cnl_nintr; i++) 120 aprint_normal(",%u", cnl->cnl_intrs[i]); 121 } 122 aprint_normal("\n"); 123 #endif 124 125 for (u_int i = 0; 126 !found 127 && i < __arraycount(cnl->cnl_ids) 128 && cnl->cnl_ids[i] != 0; 129 i++) { 130 if (cnl->cnl_ids[i] == 0xffff) { 131 inclusive = false; 132 continue; 133 } 134 found = (cnl->cnl_ids[i] == my_id); 135 } 136 /* 137 * found & inclusive == match 138 * !found & !inclusive == match 139 * found & !inclusive == no match 140 * !found & inclusive == no match 141 * therefore 142 * found ^ inclusive = no match 143 * so 144 * !(found ^ inclusive) = match 145 */ 146 if (found ^ inclusive) 147 continue; 148 149 cna.cna_busname = "cpunode"; 150 cna.cna_memt = ma->ma_memt; 151 cna.cna_le_memt = ma->ma_le_memt; 152 cna.cna_dmat = ma->ma_dmat; 153 cna.cna_childmask = childmask; 154 cna.cna_locs = *cnl; 155 156 config_found(self, &cna, cpunode_print, 157 CFARGS(.iattr = "cpunode")); 158 childmask <<= 1; 159 } 160 /* 161 * Anything MD left to do? 162 */ 163 if (cpu_md_ops.md_cpunode_attach != NULL) 164 (*cpu_md_ops.md_cpunode_attach)(parent, self, aux); 165 } 166 167 static int cpu_match(device_t, cfdata_t, void *); 168 static void cpu_attach(device_t, device_t, void *); 169 170 CFATTACH_DECL_NEW(cpu, 0, 171 cpu_match, cpu_attach, NULL, NULL); 172 173 static int 174 cpu_match(device_t parent, cfdata_t cf, void *aux) 175 { 176 struct cpunode_softc * const psc = device_private(parent); 177 struct cpunode_attach_args * const cna = aux; 178 179 if (strcmp(cna->cna_locs.cnl_name, cpu_cd.cd_name) != 0) 180 return 0; 181 182 if (psc->sc_children & cna->cna_childmask) 183 return 0; 184 185 return 1; 186 } 187 188 static void 189 cpu_attach(device_t parent, device_t self, void *aux) 190 { 191 struct cpunode_softc * const psc = device_private(parent); 192 struct cpunode_attach_args * const cna = aux; 193 194 psc->sc_children |= cna->cna_childmask; 195 196 aprint_normal("\n"); 197 198 (*cpu_md_ops.md_cpu_attach)(self, cna->cna_locs.cnl_instance); 199 } 200
Indexes created Sat Sep 20 22:09:52 GMT 2025