1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate /* 30*0Sstevel@tonic-gate * hot-plug services module 31*0Sstevel@tonic-gate */ 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #include <sys/modctl.h> 34*0Sstevel@tonic-gate #include <sys/kmem.h> 35*0Sstevel@tonic-gate #include <sys/sunddi.h> 36*0Sstevel@tonic-gate #include <sys/sunndi.h> 37*0Sstevel@tonic-gate #include <sys/disp.h> 38*0Sstevel@tonic-gate #include <sys/stat.h> 39*0Sstevel@tonic-gate #include <sys/hotplug/hpcsvc.h> 40*0Sstevel@tonic-gate #include <sys/callb.h> 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate /* 43*0Sstevel@tonic-gate * debug macros: 44*0Sstevel@tonic-gate */ 45*0Sstevel@tonic-gate #if defined(DEBUG) 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate int hpcsvc_debug = 0; 48*0Sstevel@tonic-gate 49*0Sstevel@tonic-gate static void debug(char *, uintptr_t, uintptr_t, uintptr_t, 50*0Sstevel@tonic-gate uintptr_t, uintptr_t); 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate #define DEBUG0(fmt) \ 53*0Sstevel@tonic-gate debug(fmt, 0, 0, 0, 0, 0); 54*0Sstevel@tonic-gate #define DEBUG1(fmt, a1) \ 55*0Sstevel@tonic-gate debug(fmt, (uintptr_t)(a1), 0, 0, 0, 0); 56*0Sstevel@tonic-gate #define DEBUG2(fmt, a1, a2) \ 57*0Sstevel@tonic-gate debug(fmt, (uintptr_t)(a1), (uintptr_t)(a2), 0, 0, 0); 58*0Sstevel@tonic-gate #define DEBUG3(fmt, a1, a2, a3) \ 59*0Sstevel@tonic-gate debug(fmt, (uintptr_t)(a1), (uintptr_t)(a2), (uintptr_t)(a3), 0, 0); 60*0Sstevel@tonic-gate #else 61*0Sstevel@tonic-gate #define DEBUG0(fmt) 62*0Sstevel@tonic-gate #define DEBUG1(fmt, a1) 63*0Sstevel@tonic-gate #define DEBUG2(fmt, a1, a2) 64*0Sstevel@tonic-gate #define DEBUG3(fmt, a1, a2, a3) 65*0Sstevel@tonic-gate #endif 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate /* 68*0Sstevel@tonic-gate * Definitions for the bus node registration list: 69*0Sstevel@tonic-gate * 70*0Sstevel@tonic-gate * The hot-plug service module maintains a linked list of items 71*0Sstevel@tonic-gate * representing the device bus nodes that have been registered via 72*0Sstevel@tonic-gate * hpc_nexus_register, or identified as candidates for registration 73*0Sstevel@tonic-gate * by the bus argument to hpc_slot_register. 74*0Sstevel@tonic-gate * 75*0Sstevel@tonic-gate * The head of the linked listed is stored in hpc_bus_list_head. Insertions 76*0Sstevel@tonic-gate * and removals from the list should be locked with mutex hpc_bus_mutex. 77*0Sstevel@tonic-gate * 78*0Sstevel@tonic-gate * Items in the list are allocated/freed with the macros hpc_alloc_bus_entry() 79*0Sstevel@tonic-gate * and hpc_free_bus_entry(). 80*0Sstevel@tonic-gate * 81*0Sstevel@tonic-gate * Each item in the list contains the following fields: 82*0Sstevel@tonic-gate * 83*0Sstevel@tonic-gate * bus_dip - pointer to devinfo node of the registering bus 84*0Sstevel@tonic-gate * 85*0Sstevel@tonic-gate * bus_name - device path name of the bus (ie /pci@1f,4000) 86*0Sstevel@tonic-gate * 87*0Sstevel@tonic-gate * bus_callback - bus nexus driver callback function registered 88*0Sstevel@tonic-gate * with the bus 89*0Sstevel@tonic-gate * 90*0Sstevel@tonic-gate * bus_registered - a boolean value which is true if the bus has 91*0Sstevel@tonic-gate * been registered with hpc_nexus_register, false otherwise 92*0Sstevel@tonic-gate * 93*0Sstevel@tonic-gate * bus_mutex - mutex lock to be held while updating this list entry 94*0Sstevel@tonic-gate * 95*0Sstevel@tonic-gate * bus_slot_list - linked list of the slots registered for this 96*0Sstevel@tonic-gate * bus node (see slot list details below) 97*0Sstevel@tonic-gate * 98*0Sstevel@tonic-gate * bus_thread - kernel thread for running slot event handlers for 99*0Sstevel@tonic-gate * slots associated with this bus 100*0Sstevel@tonic-gate * 101*0Sstevel@tonic-gate * bus_thread_cv - condition variable for synchronization between 102*0Sstevel@tonic-gate * the service routines and the thread for running slot 103*0Sstevel@tonic-gate * event handlers 104*0Sstevel@tonic-gate * 105*0Sstevel@tonic-gate * bus_thread_exit - a boolean value used to instruct the thread 106*0Sstevel@tonic-gate * for invoking the slot event handlers to exit 107*0Sstevel@tonic-gate * 108*0Sstevel@tonic-gate * bus_slot_event_list_head - the head of the linked list of instances 109*0Sstevel@tonic-gate * of slot event handlers to be run 110*0Sstevel@tonic-gate * handlers to be invoked 111*0Sstevel@tonic-gate * 112*0Sstevel@tonic-gate * bus_next - pointer to next list entry 113*0Sstevel@tonic-gate */ 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate typedef struct hpc_bus_entry hpc_bus_entry_t; 116*0Sstevel@tonic-gate typedef struct hpc_slot_entry hpc_slot_entry_t; 117*0Sstevel@tonic-gate typedef struct hpc_event_entry hpc_event_entry_t; 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate struct hpc_event_entry { 120*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 121*0Sstevel@tonic-gate int event; 122*0Sstevel@tonic-gate hpc_event_entry_t *next; 123*0Sstevel@tonic-gate }; 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate #define hpc_alloc_event_entry() \ 126*0Sstevel@tonic-gate (hpc_event_entry_t *)kmem_zalloc(sizeof (hpc_event_entry_t), KM_SLEEP) 127*0Sstevel@tonic-gate 128*0Sstevel@tonic-gate #define hpc_free_event_entry(a) \ 129*0Sstevel@tonic-gate kmem_free((a), sizeof (hpc_event_entry_t)) 130*0Sstevel@tonic-gate 131*0Sstevel@tonic-gate struct hpc_bus_entry { 132*0Sstevel@tonic-gate dev_info_t *bus_dip; 133*0Sstevel@tonic-gate char bus_name[MAXPATHLEN + 1]; 134*0Sstevel@tonic-gate boolean_t bus_registered; 135*0Sstevel@tonic-gate kmutex_t bus_mutex; 136*0Sstevel@tonic-gate int (* bus_callback)(dev_info_t *dip, hpc_slot_t hdl, 137*0Sstevel@tonic-gate hpc_slot_info_t *slot_info, int slot_state); 138*0Sstevel@tonic-gate hpc_slot_entry_t *bus_slot_list; 139*0Sstevel@tonic-gate kthread_t *bus_thread; 140*0Sstevel@tonic-gate kcondvar_t bus_thread_cv; 141*0Sstevel@tonic-gate boolean_t bus_thread_exit; 142*0Sstevel@tonic-gate hpc_event_entry_t *bus_slot_event_list_head; 143*0Sstevel@tonic-gate hpc_bus_entry_t *bus_next; 144*0Sstevel@tonic-gate }; 145*0Sstevel@tonic-gate 146*0Sstevel@tonic-gate #define hpc_alloc_bus_entry() \ 147*0Sstevel@tonic-gate (hpc_bus_entry_t *)kmem_zalloc(sizeof (hpc_bus_entry_t), KM_SLEEP) 148*0Sstevel@tonic-gate 149*0Sstevel@tonic-gate #define hpc_free_bus_entry(a) \ 150*0Sstevel@tonic-gate kmem_free((a), sizeof (hpc_bus_entry_t)) 151*0Sstevel@tonic-gate 152*0Sstevel@tonic-gate 153*0Sstevel@tonic-gate /* 154*0Sstevel@tonic-gate * Definitions for the per-bus node slot registration list: 155*0Sstevel@tonic-gate * 156*0Sstevel@tonic-gate * For each bus node in the bus list, the hot-plug service module maintains 157*0Sstevel@tonic-gate * a doubly linked link list of items representing the slots that have been 158*0Sstevel@tonic-gate * registered (by hot-plug controllers) for that bus. 159*0Sstevel@tonic-gate * 160*0Sstevel@tonic-gate * The head of the linked listed is stored in bus_slot_list field of the bus 161*0Sstevel@tonic-gate * node. Insertions and removals from this list should locked with the mutex 162*0Sstevel@tonic-gate * in the bus_mutex field of the bus node. 163*0Sstevel@tonic-gate * 164*0Sstevel@tonic-gate * Items in the list are allocated/freed with the macros hpc_alloc_slot_entry() 165*0Sstevel@tonic-gate * and hpc_free_slot_entry(). 166*0Sstevel@tonic-gate * 167*0Sstevel@tonic-gate * Each item in the list contains the following fields: 168*0Sstevel@tonic-gate * 169*0Sstevel@tonic-gate * slot_handle - handle for slot (hpc_slot_t) 170*0Sstevel@tonic-gate * 171*0Sstevel@tonic-gate * slot_info - information registered with the slot (hpc_slot_info_t) 172*0Sstevel@tonic-gate * 173*0Sstevel@tonic-gate * slot_ops - ops vector registered with the slot (hpc_slot_ops_t) 174*0Sstevel@tonic-gate * 175*0Sstevel@tonic-gate * slot_ops_arg - argument to be passed to ops routines (caddr_t) 176*0Sstevel@tonic-gate * 177*0Sstevel@tonic-gate * slot_event_handler - handler registered for slot events 178*0Sstevel@tonic-gate * 179*0Sstevel@tonic-gate * slot_event_handler_arg - argument to be passed to event handler 180*0Sstevel@tonic-gate * 181*0Sstevel@tonic-gate * slot_event_mask - the set of events for which the event handler 182*0Sstevel@tonic-gate * gets invoked 183*0Sstevel@tonic-gate * 184*0Sstevel@tonic-gate * slot_bus - pointer to bus node for the slot 185*0Sstevel@tonic-gate * 186*0Sstevel@tonic-gate * slot_hpc_dip - devinfo node pointer to the HPC driver instance 187*0Sstevel@tonic-gate * that controls this slot 188*0Sstevel@tonic-gate * 189*0Sstevel@tonic-gate * slot_{prev,next} - point to {previous,next} node in the list 190*0Sstevel@tonic-gate */ 191*0Sstevel@tonic-gate 192*0Sstevel@tonic-gate struct hpc_slot_entry { 193*0Sstevel@tonic-gate hpc_slot_t slot_handle; 194*0Sstevel@tonic-gate hpc_slot_info_t slot_info; /* should be static & copied */ 195*0Sstevel@tonic-gate hpc_slot_ops_t slot_ops; 196*0Sstevel@tonic-gate caddr_t slot_ops_arg; 197*0Sstevel@tonic-gate int (* slot_event_handler)(caddr_t, uint_t); 198*0Sstevel@tonic-gate caddr_t slot_event_handler_arg; 199*0Sstevel@tonic-gate uint_t slot_event_mask; 200*0Sstevel@tonic-gate hpc_bus_entry_t *slot_bus; 201*0Sstevel@tonic-gate dev_info_t *slot_hpc_dip; 202*0Sstevel@tonic-gate hpc_slot_entry_t *slot_next, *slot_prev; 203*0Sstevel@tonic-gate }; 204*0Sstevel@tonic-gate 205*0Sstevel@tonic-gate #define hpc_alloc_slot_entry() \ 206*0Sstevel@tonic-gate (hpc_slot_entry_t *)kmem_zalloc(sizeof (hpc_slot_entry_t), KM_SLEEP) 207*0Sstevel@tonic-gate 208*0Sstevel@tonic-gate #define hpc_free_slot_entry(a) \ 209*0Sstevel@tonic-gate kmem_free((a), sizeof (hpc_slot_entry_t)) 210*0Sstevel@tonic-gate 211*0Sstevel@tonic-gate 212*0Sstevel@tonic-gate /* 213*0Sstevel@tonic-gate * Definitions for slot registration callback table. 214*0Sstevel@tonic-gate */ 215*0Sstevel@tonic-gate 216*0Sstevel@tonic-gate typedef struct hpc_callback_entry hpc_callback_entry_t; 217*0Sstevel@tonic-gate 218*0Sstevel@tonic-gate struct hpc_callback_entry { 219*0Sstevel@tonic-gate int (* callback)(dev_info_t *dip, hpc_slot_t hdl, 220*0Sstevel@tonic-gate hpc_slot_info_t *slot_info, int slot_state); 221*0Sstevel@tonic-gate dev_info_t *dip; 222*0Sstevel@tonic-gate hpc_slot_t hdl; 223*0Sstevel@tonic-gate hpc_slot_info_t *slot_info; 224*0Sstevel@tonic-gate int slot_state; 225*0Sstevel@tonic-gate hpc_callback_entry_t *next; 226*0Sstevel@tonic-gate }; 227*0Sstevel@tonic-gate 228*0Sstevel@tonic-gate #define hpc_alloc_callback_entry() \ 229*0Sstevel@tonic-gate (hpc_callback_entry_t *) \ 230*0Sstevel@tonic-gate kmem_zalloc(sizeof (hpc_callback_entry_t), KM_SLEEP) 231*0Sstevel@tonic-gate 232*0Sstevel@tonic-gate #define hpc_free_callback_entry(a) \ 233*0Sstevel@tonic-gate kmem_free((a), sizeof (hpc_callback_entry_t)) 234*0Sstevel@tonic-gate 235*0Sstevel@tonic-gate 236*0Sstevel@tonic-gate 237*0Sstevel@tonic-gate /* 238*0Sstevel@tonic-gate * Mutex lock for bus registration table and table head. 239*0Sstevel@tonic-gate */ 240*0Sstevel@tonic-gate static kmutex_t hpc_bus_mutex; 241*0Sstevel@tonic-gate static hpc_bus_entry_t *hpc_bus_list_head; 242*0Sstevel@tonic-gate 243*0Sstevel@tonic-gate 244*0Sstevel@tonic-gate /* 245*0Sstevel@tonic-gate * Forward function declarations. 246*0Sstevel@tonic-gate */ 247*0Sstevel@tonic-gate static hpc_bus_entry_t *hpc_find_bus_by_name(char *name); 248*0Sstevel@tonic-gate static void hpc_slot_event_dispatcher(hpc_bus_entry_t *busp); 249*0Sstevel@tonic-gate 250*0Sstevel@tonic-gate 251*0Sstevel@tonic-gate /* 252*0Sstevel@tonic-gate * loadable module definitions: 253*0Sstevel@tonic-gate */ 254*0Sstevel@tonic-gate extern struct mod_ops mod_miscops; 255*0Sstevel@tonic-gate 256*0Sstevel@tonic-gate static struct modlmisc modlmisc = { 257*0Sstevel@tonic-gate &mod_miscops, /* Type of module */ 258*0Sstevel@tonic-gate "hot-plug controller services v%I%" 259*0Sstevel@tonic-gate }; 260*0Sstevel@tonic-gate 261*0Sstevel@tonic-gate static struct modlinkage modlinkage = { 262*0Sstevel@tonic-gate MODREV_1, (void *)&modlmisc, NULL 263*0Sstevel@tonic-gate }; 264*0Sstevel@tonic-gate 265*0Sstevel@tonic-gate int 266*0Sstevel@tonic-gate _init(void) 267*0Sstevel@tonic-gate { 268*0Sstevel@tonic-gate int e; 269*0Sstevel@tonic-gate 270*0Sstevel@tonic-gate mutex_init(&hpc_bus_mutex, NULL, MUTEX_DRIVER, NULL); 271*0Sstevel@tonic-gate 272*0Sstevel@tonic-gate /* 273*0Sstevel@tonic-gate * Install the module. 274*0Sstevel@tonic-gate */ 275*0Sstevel@tonic-gate e = mod_install(&modlinkage); 276*0Sstevel@tonic-gate if (e != 0) { 277*0Sstevel@tonic-gate mutex_destroy(&hpc_bus_mutex); 278*0Sstevel@tonic-gate } 279*0Sstevel@tonic-gate return (e); 280*0Sstevel@tonic-gate } 281*0Sstevel@tonic-gate 282*0Sstevel@tonic-gate int 283*0Sstevel@tonic-gate _fini(void) 284*0Sstevel@tonic-gate { 285*0Sstevel@tonic-gate int e; 286*0Sstevel@tonic-gate 287*0Sstevel@tonic-gate e = mod_remove(&modlinkage); 288*0Sstevel@tonic-gate if (e == 0) { 289*0Sstevel@tonic-gate mutex_destroy(&hpc_bus_mutex); 290*0Sstevel@tonic-gate } 291*0Sstevel@tonic-gate return (e); 292*0Sstevel@tonic-gate } 293*0Sstevel@tonic-gate 294*0Sstevel@tonic-gate int 295*0Sstevel@tonic-gate _info(struct modinfo *modinfop) 296*0Sstevel@tonic-gate { 297*0Sstevel@tonic-gate return (mod_info(&modlinkage, modinfop)); 298*0Sstevel@tonic-gate } 299*0Sstevel@tonic-gate 300*0Sstevel@tonic-gate 301*0Sstevel@tonic-gate 302*0Sstevel@tonic-gate hpc_slot_ops_t * 303*0Sstevel@tonic-gate hpc_alloc_slot_ops(int flag) 304*0Sstevel@tonic-gate { 305*0Sstevel@tonic-gate hpc_slot_ops_t *ops; 306*0Sstevel@tonic-gate 307*0Sstevel@tonic-gate ops = (hpc_slot_ops_t *)kmem_zalloc(sizeof (hpc_slot_ops_t), flag); 308*0Sstevel@tonic-gate return (ops); 309*0Sstevel@tonic-gate } 310*0Sstevel@tonic-gate 311*0Sstevel@tonic-gate 312*0Sstevel@tonic-gate void 313*0Sstevel@tonic-gate hpc_free_slot_ops(hpc_slot_ops_t *ops) 314*0Sstevel@tonic-gate { 315*0Sstevel@tonic-gate kmem_free((void *)ops, sizeof (hpc_slot_ops_t)); 316*0Sstevel@tonic-gate } 317*0Sstevel@tonic-gate 318*0Sstevel@tonic-gate 319*0Sstevel@tonic-gate /*ARGSUSED2*/ 320*0Sstevel@tonic-gate int 321*0Sstevel@tonic-gate hpc_nexus_register_bus(dev_info_t *dip, 322*0Sstevel@tonic-gate int (* callback)(dev_info_t *dip, hpc_slot_t hdl, 323*0Sstevel@tonic-gate hpc_slot_info_t *slot_info, int slot_state), uint_t flags) 324*0Sstevel@tonic-gate { 325*0Sstevel@tonic-gate hpc_bus_entry_t *busp; 326*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 327*0Sstevel@tonic-gate char bus_path[MAXPATHLEN + 1]; 328*0Sstevel@tonic-gate 329*0Sstevel@tonic-gate DEBUG2("hpc_nexus_register_bus: %s%d", 330*0Sstevel@tonic-gate ddi_node_name(dip), ddi_get_instance(dip)); 331*0Sstevel@tonic-gate mutex_enter(&hpc_bus_mutex); 332*0Sstevel@tonic-gate (void) ddi_pathname(dip, bus_path); 333*0Sstevel@tonic-gate busp = hpc_find_bus_by_name(bus_path); 334*0Sstevel@tonic-gate if (busp == NULL) { 335*0Sstevel@tonic-gate 336*0Sstevel@tonic-gate /* 337*0Sstevel@tonic-gate * Initialize the new bus node and link it at the head 338*0Sstevel@tonic-gate * of the bus list. 339*0Sstevel@tonic-gate */ 340*0Sstevel@tonic-gate DEBUG0("hpc_nexus_register_bus: not in bus list"); 341*0Sstevel@tonic-gate busp = hpc_alloc_bus_entry(); 342*0Sstevel@tonic-gate busp->bus_dip = dip; 343*0Sstevel@tonic-gate busp->bus_registered = B_TRUE; 344*0Sstevel@tonic-gate (void) strcpy(busp->bus_name, bus_path); 345*0Sstevel@tonic-gate mutex_init(&busp->bus_mutex, NULL, MUTEX_DRIVER, NULL); 346*0Sstevel@tonic-gate busp->bus_callback = callback; 347*0Sstevel@tonic-gate busp->bus_slot_list = NULL; 348*0Sstevel@tonic-gate busp->bus_next = hpc_bus_list_head; 349*0Sstevel@tonic-gate hpc_bus_list_head = busp; 350*0Sstevel@tonic-gate 351*0Sstevel@tonic-gate } else { 352*0Sstevel@tonic-gate 353*0Sstevel@tonic-gate /* 354*0Sstevel@tonic-gate * The bus is in the bus list but isn't registered yet. 355*0Sstevel@tonic-gate * Mark it as registered, and run the registration callbacks 356*0Sstevel@tonic-gate * for it slots. 357*0Sstevel@tonic-gate */ 358*0Sstevel@tonic-gate DEBUG0("hpc_nexus_register_bus: in list, but not registered"); 359*0Sstevel@tonic-gate mutex_enter(&busp->bus_mutex); 360*0Sstevel@tonic-gate if (busp->bus_registered == B_TRUE) { 361*0Sstevel@tonic-gate mutex_exit(&busp->bus_mutex); 362*0Sstevel@tonic-gate mutex_exit(&hpc_bus_mutex); 363*0Sstevel@tonic-gate return (HPC_ERR_BUS_DUPLICATE); 364*0Sstevel@tonic-gate } 365*0Sstevel@tonic-gate busp->bus_dip = dip; 366*0Sstevel@tonic-gate busp->bus_callback = callback; 367*0Sstevel@tonic-gate busp->bus_registered = B_TRUE; 368*0Sstevel@tonic-gate 369*0Sstevel@tonic-gate mutex_exit(&busp->bus_mutex); 370*0Sstevel@tonic-gate mutex_exit(&hpc_bus_mutex); 371*0Sstevel@tonic-gate if (callback) { 372*0Sstevel@tonic-gate DEBUG0("hpc_nexus_register_bus: running callbacks"); 373*0Sstevel@tonic-gate for (slotp = busp->bus_slot_list; slotp; 374*0Sstevel@tonic-gate slotp = slotp->slot_next) { 375*0Sstevel@tonic-gate (void) callback(dip, slotp, &slotp->slot_info, 376*0Sstevel@tonic-gate HPC_SLOT_ONLINE); 377*0Sstevel@tonic-gate } 378*0Sstevel@tonic-gate } 379*0Sstevel@tonic-gate return (HPC_SUCCESS); 380*0Sstevel@tonic-gate } 381*0Sstevel@tonic-gate mutex_exit(&hpc_bus_mutex); 382*0Sstevel@tonic-gate return (HPC_SUCCESS); 383*0Sstevel@tonic-gate } 384*0Sstevel@tonic-gate 385*0Sstevel@tonic-gate 386*0Sstevel@tonic-gate int 387*0Sstevel@tonic-gate hpc_nexus_unregister_bus(dev_info_t *dip) 388*0Sstevel@tonic-gate { 389*0Sstevel@tonic-gate hpc_bus_entry_t *busp, *busp_prev; 390*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 391*0Sstevel@tonic-gate 392*0Sstevel@tonic-gate /* 393*0Sstevel@tonic-gate * Search the list for the bus node and remove it. 394*0Sstevel@tonic-gate */ 395*0Sstevel@tonic-gate DEBUG2("hpc_nexus_unregister_bus: %s%d", 396*0Sstevel@tonic-gate ddi_node_name(dip), ddi_get_instance(dip)); 397*0Sstevel@tonic-gate mutex_enter(&hpc_bus_mutex); 398*0Sstevel@tonic-gate for (busp = hpc_bus_list_head; busp != NULL; busp_prev = busp, 399*0Sstevel@tonic-gate busp = busp->bus_next) { 400*0Sstevel@tonic-gate if (busp->bus_dip == dip) 401*0Sstevel@tonic-gate break; 402*0Sstevel@tonic-gate } 403*0Sstevel@tonic-gate if (busp == NULL) { 404*0Sstevel@tonic-gate mutex_exit(&hpc_bus_mutex); 405*0Sstevel@tonic-gate return (HPC_ERR_BUS_NOTREGISTERED); 406*0Sstevel@tonic-gate } 407*0Sstevel@tonic-gate 408*0Sstevel@tonic-gate /* 409*0Sstevel@tonic-gate * If the bus has slots, mark the bus as unregistered, otherwise 410*0Sstevel@tonic-gate * remove the bus entry from the list. 411*0Sstevel@tonic-gate */ 412*0Sstevel@tonic-gate mutex_enter(&busp->bus_mutex); 413*0Sstevel@tonic-gate if (busp->bus_slot_list == NULL) { 414*0Sstevel@tonic-gate if (busp == hpc_bus_list_head) 415*0Sstevel@tonic-gate hpc_bus_list_head = busp->bus_next; 416*0Sstevel@tonic-gate else 417*0Sstevel@tonic-gate busp_prev->bus_next = busp->bus_next; 418*0Sstevel@tonic-gate mutex_exit(&busp->bus_mutex); 419*0Sstevel@tonic-gate mutex_destroy(&busp->bus_mutex); 420*0Sstevel@tonic-gate hpc_free_bus_entry(busp); 421*0Sstevel@tonic-gate mutex_exit(&hpc_bus_mutex); 422*0Sstevel@tonic-gate return (HPC_SUCCESS); 423*0Sstevel@tonic-gate } 424*0Sstevel@tonic-gate 425*0Sstevel@tonic-gate /* 426*0Sstevel@tonic-gate * unregister event handlers for all the slots on this bus. 427*0Sstevel@tonic-gate */ 428*0Sstevel@tonic-gate for (slotp = busp->bus_slot_list; slotp != NULL; 429*0Sstevel@tonic-gate slotp = slotp->slot_next) { 430*0Sstevel@tonic-gate slotp->slot_event_handler = NULL; 431*0Sstevel@tonic-gate slotp->slot_event_handler_arg = NULL; 432*0Sstevel@tonic-gate } 433*0Sstevel@tonic-gate busp->bus_registered = B_FALSE; 434*0Sstevel@tonic-gate mutex_exit(&busp->bus_mutex); 435*0Sstevel@tonic-gate mutex_exit(&hpc_bus_mutex); 436*0Sstevel@tonic-gate return (HPC_SUCCESS); 437*0Sstevel@tonic-gate } 438*0Sstevel@tonic-gate 439*0Sstevel@tonic-gate 440*0Sstevel@tonic-gate /*ARGSUSED5*/ 441*0Sstevel@tonic-gate int 442*0Sstevel@tonic-gate hpc_slot_register(dev_info_t *hpc_dip, char *bus, hpc_slot_info_t *infop, 443*0Sstevel@tonic-gate hpc_slot_t *handlep, hpc_slot_ops_t *opsp, 444*0Sstevel@tonic-gate caddr_t ops_arg, uint_t flags) 445*0Sstevel@tonic-gate { 446*0Sstevel@tonic-gate hpc_bus_entry_t *busp; 447*0Sstevel@tonic-gate hpc_slot_entry_t *slotp, *slot_list_head; 448*0Sstevel@tonic-gate boolean_t run_callback = B_FALSE; 449*0Sstevel@tonic-gate int (* callback)(dev_info_t *dip, hpc_slot_t hdl, 450*0Sstevel@tonic-gate hpc_slot_info_t *slot_info, int slot_state); 451*0Sstevel@tonic-gate dev_info_t *dip; 452*0Sstevel@tonic-gate kthread_t *t; 453*0Sstevel@tonic-gate 454*0Sstevel@tonic-gate /* 455*0Sstevel@tonic-gate * Validate the arguments. 456*0Sstevel@tonic-gate */ 457*0Sstevel@tonic-gate DEBUG1("hpc_slot_register: %s", bus); 458*0Sstevel@tonic-gate if (handlep == NULL || infop == NULL || opsp == NULL || hpc_dip == NULL) 459*0Sstevel@tonic-gate return (HPC_ERR_INVALID); 460*0Sstevel@tonic-gate 461*0Sstevel@tonic-gate /* 462*0Sstevel@tonic-gate * The bus for the slot may or may not be in the bus list. If it's 463*0Sstevel@tonic-gate * not, we create a node for the bus in the bus list and mark it as 464*0Sstevel@tonic-gate * not registered. 465*0Sstevel@tonic-gate */ 466*0Sstevel@tonic-gate mutex_enter(&hpc_bus_mutex); 467*0Sstevel@tonic-gate busp = hpc_find_bus_by_name(bus); 468*0Sstevel@tonic-gate if (busp == NULL) { 469*0Sstevel@tonic-gate 470*0Sstevel@tonic-gate /* 471*0Sstevel@tonic-gate * Initialize the new bus node and link it at the 472*0Sstevel@tonic-gate * head of the bus list. 473*0Sstevel@tonic-gate */ 474*0Sstevel@tonic-gate DEBUG1("hpc_slot_register: %s not in bus list", bus); 475*0Sstevel@tonic-gate busp = hpc_alloc_bus_entry(); 476*0Sstevel@tonic-gate busp->bus_registered = B_FALSE; 477*0Sstevel@tonic-gate (void) strcpy(busp->bus_name, bus); 478*0Sstevel@tonic-gate mutex_init(&busp->bus_mutex, NULL, MUTEX_DRIVER, NULL); 479*0Sstevel@tonic-gate busp->bus_slot_list = NULL; 480*0Sstevel@tonic-gate busp->bus_next = hpc_bus_list_head; 481*0Sstevel@tonic-gate hpc_bus_list_head = busp; 482*0Sstevel@tonic-gate 483*0Sstevel@tonic-gate } else { 484*0Sstevel@tonic-gate if (busp->bus_registered == B_TRUE) { 485*0Sstevel@tonic-gate run_callback = B_TRUE; 486*0Sstevel@tonic-gate callback = busp->bus_callback; 487*0Sstevel@tonic-gate dip = busp->bus_dip; 488*0Sstevel@tonic-gate } 489*0Sstevel@tonic-gate } 490*0Sstevel@tonic-gate 491*0Sstevel@tonic-gate mutex_enter(&busp->bus_mutex); 492*0Sstevel@tonic-gate slot_list_head = busp->bus_slot_list; 493*0Sstevel@tonic-gate if (slot_list_head == NULL) { 494*0Sstevel@tonic-gate 495*0Sstevel@tonic-gate /* 496*0Sstevel@tonic-gate * The slot list was empty, so this is the first slot 497*0Sstevel@tonic-gate * registered for the bus. Create a per-bus thread 498*0Sstevel@tonic-gate * for running the slot event handlers. 499*0Sstevel@tonic-gate */ 500*0Sstevel@tonic-gate DEBUG0("hpc_slot_register: creating event callback thread"); 501*0Sstevel@tonic-gate cv_init(&busp->bus_thread_cv, NULL, CV_DRIVER, NULL); 502*0Sstevel@tonic-gate busp->bus_thread_exit = B_FALSE; 503*0Sstevel@tonic-gate t = thread_create(NULL, 0, hpc_slot_event_dispatcher, 504*0Sstevel@tonic-gate (caddr_t)busp, 0, &p0, TS_RUN, minclsyspri); 505*0Sstevel@tonic-gate busp->bus_thread = t; 506*0Sstevel@tonic-gate } 507*0Sstevel@tonic-gate 508*0Sstevel@tonic-gate /* 509*0Sstevel@tonic-gate * Create and initialize a new entry in the slot list for the bus. 510*0Sstevel@tonic-gate */ 511*0Sstevel@tonic-gate slotp = hpc_alloc_slot_entry(); 512*0Sstevel@tonic-gate slotp->slot_handle = (hpc_slot_t)slotp; 513*0Sstevel@tonic-gate slotp->slot_info = *infop; 514*0Sstevel@tonic-gate slotp->slot_ops = *opsp; 515*0Sstevel@tonic-gate slotp->slot_ops_arg = ops_arg; 516*0Sstevel@tonic-gate slotp->slot_bus = busp; 517*0Sstevel@tonic-gate slotp->slot_hpc_dip = hpc_dip; 518*0Sstevel@tonic-gate slotp->slot_prev = NULL; 519*0Sstevel@tonic-gate busp->bus_slot_list = slotp; 520*0Sstevel@tonic-gate slotp->slot_next = slot_list_head; 521*0Sstevel@tonic-gate if (slot_list_head != NULL) 522*0Sstevel@tonic-gate slot_list_head->slot_prev = slotp; 523*0Sstevel@tonic-gate mutex_exit(&busp->bus_mutex); 524*0Sstevel@tonic-gate mutex_exit(&hpc_bus_mutex); 525*0Sstevel@tonic-gate 526*0Sstevel@tonic-gate /* 527*0Sstevel@tonic-gate * Return the handle to the caller prior to return to avoid recursion. 528*0Sstevel@tonic-gate */ 529*0Sstevel@tonic-gate *handlep = (hpc_slot_t)slotp; 530*0Sstevel@tonic-gate 531*0Sstevel@tonic-gate /* 532*0Sstevel@tonic-gate * If the bus was registered, we run the callback registered by 533*0Sstevel@tonic-gate * the bus node. 534*0Sstevel@tonic-gate */ 535*0Sstevel@tonic-gate if (run_callback) { 536*0Sstevel@tonic-gate DEBUG0("hpc_slot_register: running callback"); 537*0Sstevel@tonic-gate 538*0Sstevel@tonic-gate (void) callback(dip, slotp, infop, HPC_SLOT_ONLINE); 539*0Sstevel@tonic-gate } 540*0Sstevel@tonic-gate 541*0Sstevel@tonic-gate /* 542*0Sstevel@tonic-gate * Keep hpc driver in memory 543*0Sstevel@tonic-gate */ 544*0Sstevel@tonic-gate (void) ndi_hold_driver(hpc_dip); 545*0Sstevel@tonic-gate 546*0Sstevel@tonic-gate return (HPC_SUCCESS); 547*0Sstevel@tonic-gate } 548*0Sstevel@tonic-gate 549*0Sstevel@tonic-gate 550*0Sstevel@tonic-gate int 551*0Sstevel@tonic-gate hpc_slot_unregister(hpc_slot_t *handlep) 552*0Sstevel@tonic-gate { 553*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 554*0Sstevel@tonic-gate hpc_bus_entry_t *busp, *busp_prev; 555*0Sstevel@tonic-gate boolean_t run_callback; 556*0Sstevel@tonic-gate int (* callback)(dev_info_t *dip, hpc_slot_t hdl, 557*0Sstevel@tonic-gate hpc_slot_info_t *slot_info, int slot_state); 558*0Sstevel@tonic-gate int r; 559*0Sstevel@tonic-gate dev_info_t *dip; 560*0Sstevel@tonic-gate char *bus_name; 561*0Sstevel@tonic-gate 562*0Sstevel@tonic-gate DEBUG0("hpc_slot_unregister:"); 563*0Sstevel@tonic-gate 564*0Sstevel@tonic-gate ASSERT(handlep != NULL); 565*0Sstevel@tonic-gate 566*0Sstevel@tonic-gate /* validate the handle */ 567*0Sstevel@tonic-gate slotp = (hpc_slot_entry_t *)*handlep; 568*0Sstevel@tonic-gate if ((slotp == NULL) || slotp->slot_handle != *handlep) 569*0Sstevel@tonic-gate return (HPC_ERR_INVALID); 570*0Sstevel@tonic-gate 571*0Sstevel@tonic-gate /* 572*0Sstevel@tonic-gate * Get the bus list entry from the slot to grap the mutex for 573*0Sstevel@tonic-gate * the slot list of the bus. 574*0Sstevel@tonic-gate */ 575*0Sstevel@tonic-gate mutex_enter(&hpc_bus_mutex); 576*0Sstevel@tonic-gate busp = slotp->slot_bus; 577*0Sstevel@tonic-gate DEBUG2("hpc_slot_unregister: handlep=%x, slotp=%x", handlep, slotp); 578*0Sstevel@tonic-gate if (busp == NULL) { 579*0Sstevel@tonic-gate mutex_exit(&hpc_bus_mutex); 580*0Sstevel@tonic-gate return (HPC_ERR_SLOT_NOTREGISTERED); 581*0Sstevel@tonic-gate } 582*0Sstevel@tonic-gate 583*0Sstevel@tonic-gate /* 584*0Sstevel@tonic-gate * Determine if we need to run the slot offline callback and 585*0Sstevel@tonic-gate * save the data necessary to do so. 586*0Sstevel@tonic-gate */ 587*0Sstevel@tonic-gate callback = busp->bus_callback; 588*0Sstevel@tonic-gate run_callback = (busp->bus_registered == B_TRUE) && (callback != NULL); 589*0Sstevel@tonic-gate dip = busp->bus_dip; 590*0Sstevel@tonic-gate bus_name = busp->bus_name; 591*0Sstevel@tonic-gate 592*0Sstevel@tonic-gate /* 593*0Sstevel@tonic-gate * Run the slot offline callback if necessary. 594*0Sstevel@tonic-gate */ 595*0Sstevel@tonic-gate if (run_callback) { 596*0Sstevel@tonic-gate mutex_exit(&hpc_bus_mutex); 597*0Sstevel@tonic-gate DEBUG0("hpc_slot_unregister: running callback"); 598*0Sstevel@tonic-gate r = callback(dip, (hpc_slot_t)slotp, &slotp->slot_info, 599*0Sstevel@tonic-gate HPC_SLOT_OFFLINE); 600*0Sstevel@tonic-gate DEBUG1("hpc_slot_unregister: callback returned %x", r); 601*0Sstevel@tonic-gate if (r != HPC_SUCCESS) 602*0Sstevel@tonic-gate return (HPC_ERR_FAILED); 603*0Sstevel@tonic-gate mutex_enter(&hpc_bus_mutex); 604*0Sstevel@tonic-gate } 605*0Sstevel@tonic-gate 606*0Sstevel@tonic-gate /* 607*0Sstevel@tonic-gate * Remove the slot from list and free the memory associated with it. 608*0Sstevel@tonic-gate */ 609*0Sstevel@tonic-gate mutex_enter(&busp->bus_mutex); 610*0Sstevel@tonic-gate DEBUG1("hpc_slot_unregister: freeing slot, bus_slot_list=%x", 611*0Sstevel@tonic-gate busp->bus_slot_list); 612*0Sstevel@tonic-gate if (slotp->slot_prev != NULL) 613*0Sstevel@tonic-gate slotp->slot_prev->slot_next = slotp->slot_next; 614*0Sstevel@tonic-gate if (slotp->slot_next != NULL) 615*0Sstevel@tonic-gate slotp->slot_next->slot_prev = slotp->slot_prev; 616*0Sstevel@tonic-gate if (slotp == busp->bus_slot_list) 617*0Sstevel@tonic-gate busp->bus_slot_list = slotp->slot_next; 618*0Sstevel@tonic-gate 619*0Sstevel@tonic-gate /* 620*0Sstevel@tonic-gate * Release hold from slot registration 621*0Sstevel@tonic-gate */ 622*0Sstevel@tonic-gate ndi_rele_driver(slotp->slot_hpc_dip); 623*0Sstevel@tonic-gate 624*0Sstevel@tonic-gate /* Free the memory associated with the slot entry structure */ 625*0Sstevel@tonic-gate hpc_free_slot_entry(slotp); 626*0Sstevel@tonic-gate 627*0Sstevel@tonic-gate /* 628*0Sstevel@tonic-gate * If the slot list is empty then stop the event handler thread. 629*0Sstevel@tonic-gate */ 630*0Sstevel@tonic-gate if (busp->bus_slot_list == NULL) { 631*0Sstevel@tonic-gate DEBUG0("hpc_slot_unregister: stopping thread"); 632*0Sstevel@tonic-gate busp->bus_thread_exit = B_TRUE; 633*0Sstevel@tonic-gate cv_signal(&busp->bus_thread_cv); 634*0Sstevel@tonic-gate DEBUG0("hpc_slot_unregister: waiting for thread to exit"); 635*0Sstevel@tonic-gate cv_wait(&busp->bus_thread_cv, &busp->bus_mutex); 636*0Sstevel@tonic-gate DEBUG0("hpc_slot_unregister: thread exit"); 637*0Sstevel@tonic-gate cv_destroy(&busp->bus_thread_cv); 638*0Sstevel@tonic-gate } 639*0Sstevel@tonic-gate 640*0Sstevel@tonic-gate /* 641*0Sstevel@tonic-gate * If the bus is unregistered and this is the last slot for this bus 642*0Sstevel@tonic-gate * then remove the entry from the bus list. 643*0Sstevel@tonic-gate */ 644*0Sstevel@tonic-gate if (busp->bus_registered == B_FALSE && busp->bus_slot_list == NULL) { 645*0Sstevel@tonic-gate /* locate the previous entry in the bus list */ 646*0Sstevel@tonic-gate for (busp = hpc_bus_list_head; busp != NULL; busp_prev = busp, 647*0Sstevel@tonic-gate busp = busp->bus_next) 648*0Sstevel@tonic-gate if (strcmp(bus_name, busp->bus_name) == 0) 649*0Sstevel@tonic-gate break; 650*0Sstevel@tonic-gate 651*0Sstevel@tonic-gate if (busp == hpc_bus_list_head) 652*0Sstevel@tonic-gate hpc_bus_list_head = busp->bus_next; 653*0Sstevel@tonic-gate else 654*0Sstevel@tonic-gate busp_prev->bus_next = busp->bus_next; 655*0Sstevel@tonic-gate 656*0Sstevel@tonic-gate mutex_exit(&busp->bus_mutex); 657*0Sstevel@tonic-gate mutex_destroy(&busp->bus_mutex); 658*0Sstevel@tonic-gate hpc_free_bus_entry(busp); 659*0Sstevel@tonic-gate } else 660*0Sstevel@tonic-gate mutex_exit(&busp->bus_mutex); 661*0Sstevel@tonic-gate mutex_exit(&hpc_bus_mutex); 662*0Sstevel@tonic-gate 663*0Sstevel@tonic-gate /* 664*0Sstevel@tonic-gate * reset the slot handle. 665*0Sstevel@tonic-gate */ 666*0Sstevel@tonic-gate *handlep = NULL; 667*0Sstevel@tonic-gate return (HPC_SUCCESS); 668*0Sstevel@tonic-gate } 669*0Sstevel@tonic-gate 670*0Sstevel@tonic-gate 671*0Sstevel@tonic-gate int 672*0Sstevel@tonic-gate hpc_install_event_handler(hpc_slot_t handle, uint_t event_mask, 673*0Sstevel@tonic-gate int (*event_handler)(caddr_t, uint_t), caddr_t arg) 674*0Sstevel@tonic-gate { 675*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 676*0Sstevel@tonic-gate hpc_bus_entry_t *busp; 677*0Sstevel@tonic-gate 678*0Sstevel@tonic-gate DEBUG3("hpc_install_event_handler: handle=%x, mask=%x, arg=%x", 679*0Sstevel@tonic-gate handle, event_mask, arg); 680*0Sstevel@tonic-gate ASSERT((handle != NULL) && (event_handler != NULL)); 681*0Sstevel@tonic-gate slotp = (hpc_slot_entry_t *)handle; 682*0Sstevel@tonic-gate busp = slotp->slot_bus; 683*0Sstevel@tonic-gate ASSERT(slotp == slotp->slot_handle); 684*0Sstevel@tonic-gate mutex_enter(&busp->bus_mutex); 685*0Sstevel@tonic-gate slotp->slot_event_mask = event_mask; 686*0Sstevel@tonic-gate slotp->slot_event_handler = event_handler; 687*0Sstevel@tonic-gate slotp->slot_event_handler_arg = arg; 688*0Sstevel@tonic-gate mutex_exit(&busp->bus_mutex); 689*0Sstevel@tonic-gate return (HPC_SUCCESS); 690*0Sstevel@tonic-gate } 691*0Sstevel@tonic-gate 692*0Sstevel@tonic-gate 693*0Sstevel@tonic-gate int 694*0Sstevel@tonic-gate hpc_remove_event_handler(hpc_slot_t handle) 695*0Sstevel@tonic-gate { 696*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 697*0Sstevel@tonic-gate hpc_bus_entry_t *busp; 698*0Sstevel@tonic-gate 699*0Sstevel@tonic-gate DEBUG1("hpc_remove_event_handler: handle=%x", handle); 700*0Sstevel@tonic-gate ASSERT(handle != NULL); 701*0Sstevel@tonic-gate slotp = (hpc_slot_entry_t *)handle; 702*0Sstevel@tonic-gate ASSERT(slotp == slotp->slot_handle); 703*0Sstevel@tonic-gate busp = slotp->slot_bus; 704*0Sstevel@tonic-gate mutex_enter(&busp->bus_mutex); 705*0Sstevel@tonic-gate slotp->slot_event_mask = 0; 706*0Sstevel@tonic-gate slotp->slot_event_handler = NULL; 707*0Sstevel@tonic-gate slotp->slot_event_handler_arg = NULL; 708*0Sstevel@tonic-gate mutex_exit(&busp->bus_mutex); 709*0Sstevel@tonic-gate return (HPC_SUCCESS); 710*0Sstevel@tonic-gate } 711*0Sstevel@tonic-gate 712*0Sstevel@tonic-gate 713*0Sstevel@tonic-gate /*ARGSUSED2*/ 714*0Sstevel@tonic-gate int 715*0Sstevel@tonic-gate hpc_slot_event_notify(hpc_slot_t handle, uint_t event, uint_t flags) 716*0Sstevel@tonic-gate { 717*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 718*0Sstevel@tonic-gate hpc_bus_entry_t *busp; 719*0Sstevel@tonic-gate hpc_event_entry_t *eventp; 720*0Sstevel@tonic-gate 721*0Sstevel@tonic-gate DEBUG2("hpc_slot_event_notify: handle=%x event=%x", handle, event); 722*0Sstevel@tonic-gate ASSERT(handle != NULL); 723*0Sstevel@tonic-gate slotp = (hpc_slot_entry_t *)handle; 724*0Sstevel@tonic-gate ASSERT(slotp == slotp->slot_handle); 725*0Sstevel@tonic-gate 726*0Sstevel@tonic-gate if (slotp->slot_event_handler == NULL) 727*0Sstevel@tonic-gate return (HPC_EVENT_UNCLAIMED); 728*0Sstevel@tonic-gate 729*0Sstevel@tonic-gate /* 730*0Sstevel@tonic-gate * If the request is to handle the event synchronously, then call 731*0Sstevel@tonic-gate * the event handler without queuing the event. 732*0Sstevel@tonic-gate */ 733*0Sstevel@tonic-gate if (flags == HPC_EVENT_SYNCHRONOUS) { 734*0Sstevel@tonic-gate caddr_t arg; 735*0Sstevel@tonic-gate int (* func)(caddr_t, uint_t); 736*0Sstevel@tonic-gate 737*0Sstevel@tonic-gate func = slotp->slot_event_handler; 738*0Sstevel@tonic-gate arg = slotp->slot_event_handler_arg; 739*0Sstevel@tonic-gate return (func(arg, event)); 740*0Sstevel@tonic-gate } 741*0Sstevel@tonic-gate /* 742*0Sstevel@tonic-gate * Insert the event into the bus slot event handler list and 743*0Sstevel@tonic-gate * signal the bus slot event handler dispatch thread. 744*0Sstevel@tonic-gate */ 745*0Sstevel@tonic-gate busp = slotp->slot_bus; 746*0Sstevel@tonic-gate mutex_enter(&busp->bus_mutex); 747*0Sstevel@tonic-gate 748*0Sstevel@tonic-gate if (busp->bus_slot_event_list_head == NULL) { 749*0Sstevel@tonic-gate eventp = busp->bus_slot_event_list_head = 750*0Sstevel@tonic-gate hpc_alloc_event_entry(); 751*0Sstevel@tonic-gate } else { 752*0Sstevel@tonic-gate for (eventp = busp->bus_slot_event_list_head; 753*0Sstevel@tonic-gate eventp->next != NULL; eventp = eventp->next) 754*0Sstevel@tonic-gate ; 755*0Sstevel@tonic-gate eventp->next = hpc_alloc_event_entry(); 756*0Sstevel@tonic-gate eventp = eventp->next; 757*0Sstevel@tonic-gate } 758*0Sstevel@tonic-gate eventp->slotp = slotp; 759*0Sstevel@tonic-gate eventp->event = event; 760*0Sstevel@tonic-gate eventp->next = NULL; 761*0Sstevel@tonic-gate DEBUG2("hpc_slot_event_notify: busp=%x event=%x", busp, event); 762*0Sstevel@tonic-gate cv_signal(&busp->bus_thread_cv); 763*0Sstevel@tonic-gate mutex_exit(&busp->bus_mutex); 764*0Sstevel@tonic-gate return (HPC_EVENT_CLAIMED); 765*0Sstevel@tonic-gate } 766*0Sstevel@tonic-gate 767*0Sstevel@tonic-gate 768*0Sstevel@tonic-gate int 769*0Sstevel@tonic-gate hpc_nexus_connect(hpc_slot_t handle, void *data, uint_t flags) 770*0Sstevel@tonic-gate { 771*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 772*0Sstevel@tonic-gate 773*0Sstevel@tonic-gate ASSERT(handle != NULL); 774*0Sstevel@tonic-gate slotp = (hpc_slot_entry_t *)handle; 775*0Sstevel@tonic-gate if (slotp->slot_ops.hpc_op_connect) 776*0Sstevel@tonic-gate return (slotp->slot_ops.hpc_op_connect(slotp->slot_ops_arg, 777*0Sstevel@tonic-gate handle, data, flags)); 778*0Sstevel@tonic-gate return (HPC_ERR_FAILED); 779*0Sstevel@tonic-gate } 780*0Sstevel@tonic-gate 781*0Sstevel@tonic-gate 782*0Sstevel@tonic-gate int 783*0Sstevel@tonic-gate hpc_nexus_disconnect(hpc_slot_t handle, void *data, uint_t flags) 784*0Sstevel@tonic-gate { 785*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 786*0Sstevel@tonic-gate 787*0Sstevel@tonic-gate ASSERT(handle != NULL); 788*0Sstevel@tonic-gate slotp = (hpc_slot_entry_t *)handle; 789*0Sstevel@tonic-gate if (slotp->slot_ops.hpc_op_disconnect) 790*0Sstevel@tonic-gate return (slotp->slot_ops.hpc_op_disconnect(slotp->slot_ops_arg, 791*0Sstevel@tonic-gate handle, data, flags)); 792*0Sstevel@tonic-gate return (HPC_ERR_FAILED); 793*0Sstevel@tonic-gate } 794*0Sstevel@tonic-gate 795*0Sstevel@tonic-gate 796*0Sstevel@tonic-gate int 797*0Sstevel@tonic-gate hpc_nexus_insert(hpc_slot_t handle, void *data, uint_t flags) 798*0Sstevel@tonic-gate { 799*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 800*0Sstevel@tonic-gate 801*0Sstevel@tonic-gate ASSERT(handle != NULL); 802*0Sstevel@tonic-gate slotp = (hpc_slot_entry_t *)handle; 803*0Sstevel@tonic-gate if (slotp->slot_ops.hpc_op_insert) 804*0Sstevel@tonic-gate return (slotp->slot_ops.hpc_op_insert(slotp->slot_ops_arg, 805*0Sstevel@tonic-gate handle, data, flags)); 806*0Sstevel@tonic-gate return (HPC_ERR_FAILED); 807*0Sstevel@tonic-gate } 808*0Sstevel@tonic-gate 809*0Sstevel@tonic-gate 810*0Sstevel@tonic-gate int 811*0Sstevel@tonic-gate hpc_nexus_remove(hpc_slot_t handle, void *data, uint_t flags) 812*0Sstevel@tonic-gate { 813*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 814*0Sstevel@tonic-gate 815*0Sstevel@tonic-gate ASSERT(handle != NULL); 816*0Sstevel@tonic-gate slotp = (hpc_slot_entry_t *)handle; 817*0Sstevel@tonic-gate if (slotp->slot_ops.hpc_op_remove) 818*0Sstevel@tonic-gate return (slotp->slot_ops.hpc_op_remove(slotp->slot_ops_arg, 819*0Sstevel@tonic-gate handle, data, flags)); 820*0Sstevel@tonic-gate return (HPC_ERR_FAILED); 821*0Sstevel@tonic-gate } 822*0Sstevel@tonic-gate 823*0Sstevel@tonic-gate 824*0Sstevel@tonic-gate int 825*0Sstevel@tonic-gate hpc_nexus_control(hpc_slot_t handle, int request, caddr_t arg) 826*0Sstevel@tonic-gate { 827*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 828*0Sstevel@tonic-gate 829*0Sstevel@tonic-gate ASSERT(handle != NULL); 830*0Sstevel@tonic-gate slotp = (hpc_slot_entry_t *)handle; 831*0Sstevel@tonic-gate if (slotp->slot_ops.hpc_op_control) 832*0Sstevel@tonic-gate return (slotp->slot_ops.hpc_op_control(slotp->slot_ops_arg, 833*0Sstevel@tonic-gate handle, request, arg)); 834*0Sstevel@tonic-gate return (HPC_ERR_FAILED); 835*0Sstevel@tonic-gate } 836*0Sstevel@tonic-gate 837*0Sstevel@tonic-gate /* 838*0Sstevel@tonic-gate * The following function is run from the bus entries slot event handling 839*0Sstevel@tonic-gate * thread. 840*0Sstevel@tonic-gate */ 841*0Sstevel@tonic-gate static void 842*0Sstevel@tonic-gate hpc_slot_event_dispatcher(hpc_bus_entry_t *busp) 843*0Sstevel@tonic-gate { 844*0Sstevel@tonic-gate hpc_event_entry_t *eventp; 845*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 846*0Sstevel@tonic-gate int event; 847*0Sstevel@tonic-gate caddr_t arg; 848*0Sstevel@tonic-gate int (* func)(caddr_t, uint_t); 849*0Sstevel@tonic-gate callb_cpr_t cprinfo; 850*0Sstevel@tonic-gate 851*0Sstevel@tonic-gate /* 852*0Sstevel@tonic-gate * The creator of this thread is waiting to be signaled that 853*0Sstevel@tonic-gate * the thread has been started. 854*0Sstevel@tonic-gate */ 855*0Sstevel@tonic-gate DEBUG1("hpc_slot_event_dispatcher: busp=%x", busp); 856*0Sstevel@tonic-gate 857*0Sstevel@tonic-gate CALLB_CPR_INIT(&cprinfo, &busp->bus_mutex, callb_generic_cpr, 858*0Sstevel@tonic-gate "hpc_slot_event_dispatcher"); 859*0Sstevel@tonic-gate 860*0Sstevel@tonic-gate mutex_enter(&busp->bus_mutex); 861*0Sstevel@tonic-gate /* 862*0Sstevel@tonic-gate * Wait for events to queue and then process them. 863*0Sstevel@tonic-gate */ 864*0Sstevel@tonic-gate for (;;) { 865*0Sstevel@tonic-gate 866*0Sstevel@tonic-gate /* 867*0Sstevel@tonic-gate * Note we only hold the mutex while determining 868*0Sstevel@tonic-gate * the number of entries that have been added to 869*0Sstevel@tonic-gate * the event list, while updating the event list 870*0Sstevel@tonic-gate * after processing the event list entries. 871*0Sstevel@tonic-gate */ 872*0Sstevel@tonic-gate if (busp->bus_slot_event_list_head == NULL) { 873*0Sstevel@tonic-gate CALLB_CPR_SAFE_BEGIN(&cprinfo); 874*0Sstevel@tonic-gate cv_wait(&busp->bus_thread_cv, &busp->bus_mutex); 875*0Sstevel@tonic-gate CALLB_CPR_SAFE_END(&cprinfo, &busp->bus_mutex); 876*0Sstevel@tonic-gate if (busp->bus_thread_exit) 877*0Sstevel@tonic-gate break; 878*0Sstevel@tonic-gate continue; 879*0Sstevel@tonic-gate } 880*0Sstevel@tonic-gate 881*0Sstevel@tonic-gate /* 882*0Sstevel@tonic-gate * We have an event handler instance in the list to 883*0Sstevel@tonic-gate * process. Remove the head of the list, saving the 884*0Sstevel@tonic-gate * information required to run the event handler. 885*0Sstevel@tonic-gate * Then run the event handler while the bus mutex 886*0Sstevel@tonic-gate * is released. 887*0Sstevel@tonic-gate */ 888*0Sstevel@tonic-gate eventp = busp->bus_slot_event_list_head; 889*0Sstevel@tonic-gate slotp = eventp->slotp; 890*0Sstevel@tonic-gate event = eventp->event; 891*0Sstevel@tonic-gate func = slotp->slot_event_handler; 892*0Sstevel@tonic-gate arg = slotp->slot_event_handler_arg; 893*0Sstevel@tonic-gate busp->bus_slot_event_list_head = eventp->next; 894*0Sstevel@tonic-gate hpc_free_event_entry(eventp); 895*0Sstevel@tonic-gate mutex_exit(&busp->bus_mutex); 896*0Sstevel@tonic-gate func(arg, event); 897*0Sstevel@tonic-gate mutex_enter(&busp->bus_mutex); 898*0Sstevel@tonic-gate 899*0Sstevel@tonic-gate if (busp->bus_thread_exit) 900*0Sstevel@tonic-gate break; 901*0Sstevel@tonic-gate } 902*0Sstevel@tonic-gate 903*0Sstevel@tonic-gate DEBUG0("hpc_slot_event_dispatcher: thread_exit"); 904*0Sstevel@tonic-gate cv_signal(&busp->bus_thread_cv); 905*0Sstevel@tonic-gate CALLB_CPR_EXIT(&cprinfo); 906*0Sstevel@tonic-gate thread_exit(); 907*0Sstevel@tonic-gate } 908*0Sstevel@tonic-gate 909*0Sstevel@tonic-gate 910*0Sstevel@tonic-gate static hpc_bus_entry_t * 911*0Sstevel@tonic-gate hpc_find_bus_by_name(char *path) 912*0Sstevel@tonic-gate { 913*0Sstevel@tonic-gate hpc_bus_entry_t *busp; 914*0Sstevel@tonic-gate 915*0Sstevel@tonic-gate for (busp = hpc_bus_list_head; busp != NULL; busp = busp->bus_next) { 916*0Sstevel@tonic-gate if (strcmp(path, busp->bus_name) == 0) 917*0Sstevel@tonic-gate break; 918*0Sstevel@tonic-gate } 919*0Sstevel@tonic-gate return (busp); 920*0Sstevel@tonic-gate } 921*0Sstevel@tonic-gate 922*0Sstevel@tonic-gate boolean_t 923*0Sstevel@tonic-gate hpc_bus_registered(hpc_slot_t slot_hdl) 924*0Sstevel@tonic-gate { 925*0Sstevel@tonic-gate hpc_slot_entry_t *slotp; 926*0Sstevel@tonic-gate hpc_bus_entry_t *busp; 927*0Sstevel@tonic-gate 928*0Sstevel@tonic-gate slotp = (hpc_slot_entry_t *)slot_hdl; 929*0Sstevel@tonic-gate busp = slotp->slot_bus; 930*0Sstevel@tonic-gate return (busp->bus_registered); 931*0Sstevel@tonic-gate } 932*0Sstevel@tonic-gate 933*0Sstevel@tonic-gate 934*0Sstevel@tonic-gate #ifdef DEBUG 935*0Sstevel@tonic-gate 936*0Sstevel@tonic-gate extern void prom_printf(const char *, ...); 937*0Sstevel@tonic-gate 938*0Sstevel@tonic-gate static void 939*0Sstevel@tonic-gate debug(char *fmt, uintptr_t a1, uintptr_t a2, uintptr_t a3, 940*0Sstevel@tonic-gate uintptr_t a4, uintptr_t a5) 941*0Sstevel@tonic-gate { 942*0Sstevel@tonic-gate if (hpcsvc_debug != 0) { 943*0Sstevel@tonic-gate cmn_err(CE_CONT, "hpcsvc: "); 944*0Sstevel@tonic-gate cmn_err(CE_CONT, fmt, a1, a2, a3, a4, a5); 945*0Sstevel@tonic-gate cmn_err(CE_CONT, "\n"); 946*0Sstevel@tonic-gate } 947*0Sstevel@tonic-gate } 948*0Sstevel@tonic-gate #endif 949