1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * The MDESC picl plugin serves 2 different functionalities. 31 * --The first is to look up certain CPU properties in the MDESC an to add 32 * these properties in the already created CPU PICL nodes in the /platform 33 * section of the tree. 34 * --The second functionality is to create a /disk_discovery section of the 35 * PICL tree which will have a disk node created for each disk node in the 36 * machine description. 37 */ 38 39 #include "mdescplugin.h" 40 41 #pragma init(mdescplugin_register) /* place in .init section */ 42 43 picl_nodehdl_t root_node; 44 md_t *mdp; 45 mde_cookie_t rootnode; 46 47 void mdescplugin_init(void); 48 void mdescplugin_fini(void); 49 50 extern int add_cpu_prop(picl_nodehdl_t node, void *args); 51 extern int disk_discovery(void); 52 extern md_t *mdesc_devinit(void); 53 extern void mdesc_devfini(md_t *mdp); 54 extern int update_devices(char *dev, int op); 55 56 picld_plugin_reg_t mdescplugin_reg = { 57 PICLD_PLUGIN_VERSION_1, 58 PICLD_PLUGIN_CRITICAL, 59 "mdesc_plugin", 60 mdescplugin_init, 61 mdescplugin_fini 62 }; 63 64 #define DISK_FOUND 0x00 65 #define DISK_NOT_FOUND 0x01 66 67 typedef struct disk_lookup { 68 char *path; 69 picl_nodehdl_t disk; 70 int result; 71 } disk_lookup_t; 72 73 int 74 find_disk(picl_nodehdl_t node, void *args) 75 { 76 disk_lookup_t *lookup = (disk_lookup_t *)args; 77 int status; 78 char path[PICL_PROPNAMELEN_MAX]; 79 80 status = ptree_get_propval_by_name(node, "Path", (void *)&path, 81 PICL_PROPNAMELEN_MAX); 82 if (status != PICL_SUCCESS) { 83 return (PICL_WALK_CONTINUE); 84 } 85 86 if (strcmp(path, lookup->path) == 0) { 87 lookup->disk = node; 88 lookup->result = DISK_FOUND; 89 return (PICL_WALK_TERMINATE); 90 } 91 92 return (PICL_WALK_CONTINUE); 93 } 94 95 /* 96 * DR event handler 97 * respond to the picl events: 98 * PICLEVENT_DR_AP_STATE_CHANGE 99 */ 100 static void 101 dr_handler(const char *ename, const void *earg, size_t size, void *cookie) 102 { 103 nvlist_t *nvlp = NULL; 104 char *dtype; 105 char *ap_id; 106 char *hint; 107 108 109 if (strcmp(ename, PICLEVENT_DR_AP_STATE_CHANGE) != 0) { 110 return; 111 } 112 113 if (nvlist_unpack((char *)earg, size, &nvlp, NULL)) { 114 return; 115 } 116 117 if (nvlist_lookup_string(nvlp, PICLEVENTARG_DATA_TYPE, &dtype)) { 118 nvlist_free(nvlp); 119 return; 120 } 121 122 if (strcmp(dtype, PICLEVENTARG_PICLEVENT_DATA) != 0) { 123 nvlist_free(nvlp); 124 return; 125 } 126 127 if (nvlist_lookup_string(nvlp, PICLEVENTARG_AP_ID, &ap_id)) { 128 nvlist_free(nvlp); 129 return; 130 } 131 132 if (nvlist_lookup_string(nvlp, PICLEVENTARG_HINT, &hint)) { 133 nvlist_free(nvlp); 134 return; 135 } 136 137 mdp = mdesc_devinit(); 138 if (mdp == NULL) { 139 nvlist_free(nvlp); 140 return; 141 } 142 143 rootnode = md_root_node(mdp); 144 145 if (strcmp(hint, DR_HINT_INSERT) == 0) 146 (void) update_devices(ap_id, DEV_ADD); 147 else if (strcmp(hint, DR_HINT_REMOVE) == 0) 148 (void) update_devices(ap_id, DEV_REMOVE); 149 150 mdesc_devfini(mdp); 151 nvlist_free(nvlp); 152 } 153 154 /* 155 * Discovery event handler 156 * respond to the picl events: 157 * PICLEVENT_SYSEVENT_DEVICE_ADDED 158 * PICLEVENT_SYSEVENT_DEVICE_REMOVED 159 */ 160 static void 161 dsc_handler(const char *ename, const void *earg, size_t size, void *cookie) 162 { 163 nvlist_t *nvlp = NULL; 164 char *path; 165 disk_lookup_t lookup; 166 int status; 167 168 /* 169 * retrieve the device's physical path from the event arg 170 * and determine which disk (if any) we are working with 171 */ 172 if (nvlist_unpack((char *)earg, size, &nvlp, NULL)) 173 return; 174 if (nvlist_lookup_string(nvlp, "devfs-path", &path)) 175 return; 176 177 lookup.path = strdup(path); 178 lookup.disk = NULL; 179 lookup.result = DISK_NOT_FOUND; 180 181 status = ptree_walk_tree_by_class(root_node, "disk", (void *)&lookup, 182 find_disk); 183 if (status != PICL_SUCCESS) { 184 return; 185 } 186 187 if (lookup.result == DISK_FOUND) { 188 if (strcmp(ename, PICLEVENT_SYSEVENT_DEVICE_ADDED) == 0) 189 ptree_update_propval_by_name(lookup.disk, "State", 190 (void *)strdup(CONFIGURED), PICL_PROPNAMELEN_MAX); 191 else if (strcmp(ename, PICLEVENT_SYSEVENT_DEVICE_REMOVED) == 0) 192 ptree_update_propval_by_name(lookup.disk, "State", 193 (void *)strdup(UNCONFIGURED), PICL_PROPNAMELEN_MAX); 194 } 195 196 nvlist_free(nvlp); 197 } 198 199 void 200 mdescplugin_init(void) 201 { 202 int status; 203 204 status = ptree_get_root(&root_node); 205 if (status != PICL_SUCCESS) { 206 return; 207 } 208 209 mdp = mdesc_devinit(); 210 if (mdp == NULL) 211 return; 212 213 rootnode = md_root_node(mdp); 214 215 /* 216 * This is the start of the CPU property augmentation code. 217 * add_cpu_prop and the rest of the CPU code lives in cpu_prop_update.c 218 */ 219 status = ptree_walk_tree_by_class(root_node, "cpu", NULL, add_cpu_prop); 220 if (status != PICL_SUCCESS) { 221 return; 222 } 223 224 (void) disk_discovery(); 225 226 /* 227 * register dsc_handler for both "sysevent-device-added" and 228 * and for "sysevent-device-removed" PICL events 229 */ 230 (void) ptree_register_handler(PICLEVENT_SYSEVENT_DEVICE_ADDED, 231 dsc_handler, NULL); 232 (void) ptree_register_handler(PICLEVENT_SYSEVENT_DEVICE_REMOVED, 233 dsc_handler, NULL); 234 (void) ptree_register_handler(PICLEVENT_DR_AP_STATE_CHANGE, 235 dr_handler, NULL); 236 237 mdesc_devfini(mdp); 238 } 239 240 void 241 mdescplugin_fini(void) 242 { 243 /* unregister the event handler */ 244 (void) ptree_unregister_handler(PICLEVENT_SYSEVENT_DEVICE_ADDED, 245 dsc_handler, NULL); 246 (void) ptree_unregister_handler(PICLEVENT_SYSEVENT_DEVICE_REMOVED, 247 dsc_handler, NULL); 248 (void) ptree_unregister_handler(PICLEVENT_DR_AP_STATE_CHANGE, 249 dr_handler, NULL); 250 } 251 252 void 253 mdescplugin_register(void) 254 { 255 picld_plugin_register(&mdescplugin_reg); 256 } 257