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 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * ********************************************************************** 28 * Extension module for PCI nexus drivers to support PCI Hot Plug feature. 29 * 30 * DESCRIPTION: 31 * This module basically implements "devctl" and Attachment Point device 32 * nodes for hot plug operations. The cb_ops functions needed for access 33 * to these device nodes are also implemented. For hotplug operations 34 * on Attachment Points it interacts with the hotplug services (HPS) 35 * framework. A pci nexus driver would simply call pcihp_init() in its 36 * attach() function and pcihp_uninit() call in its detach() function. 37 * ********************************************************************** 38 */ 39 40 #include <sys/conf.h> 41 #include <sys/kmem.h> 42 #include <sys/debug.h> 43 #include <sys/modctl.h> 44 #include <sys/autoconf.h> 45 #include <sys/ddi.h> 46 #include <sys/sunddi.h> 47 #include <sys/sunndi.h> 48 #include <sys/ddi_impldefs.h> 49 #include <sys/ndi_impldefs.h> 50 #include <sys/ddipropdefs.h> 51 #include <sys/open.h> 52 #include <sys/file.h> 53 #include <sys/stat.h> 54 #include <sys/pci.h> 55 #include <sys/pci_impl.h> 56 #include <sys/devctl.h> 57 #include <sys/hotplug/hpcsvc.h> 58 #include <sys/hotplug/pci/pcicfg.h> 59 #include <sys/hotplug/pci/pcihp.h> 60 #include <sys/sysevent.h> 61 #include <sys/sysevent/eventdefs.h> 62 #include <sys/sysevent/dr.h> 63 #include <sys/fs/dv_node.h> 64 65 /* 66 * NOTE: 67 * This module depends on PCI Configurator module (misc/pcicfg), 68 * Hot Plug Services framework module (misc/hpcsvc) and Bus Resource 69 * Allocator module (misc/busra). 70 */ 71 72 /* 73 * ************************************************************************ 74 * *** Implementation specific data structures/definitions. *** 75 * ************************************************************************ 76 */ 77 78 /* soft state */ 79 typedef enum { PCIHP_SOFT_STATE_CLOSED, PCIHP_SOFT_STATE_OPEN, 80 PCIHP_SOFT_STATE_OPEN_EXCL } pcihp_soft_state_t; 81 82 #define PCI_MAX_DEVS 32 /* max. number of devices on a pci bus */ 83 84 /* the following correspond to sysevent defined subclasses */ 85 #define PCIHP_DR_AP_STATE_CHANGE 0 86 #define PCIHP_DR_REQ 1 87 88 /* pcihp_get_soft_state() command argument */ 89 #define PCIHP_DR_NOOP 0 90 #define PCIHP_DR_BUS_CONFIGURE 1 91 #define PCIHP_DR_BUS_UNCONFIGURE 2 92 #define PCIHP_DR_SLOT_ENTER 4 93 #define PCIHP_DR_SLOT_EXIT 8 94 95 /* hot plug bus state */ 96 enum { PCIHP_BUS_INITIALIZING, PCIHP_BUS_UNCONFIGURED, 97 PCIHP_BUS_CONFIGURED }; 98 99 /* 100 * Soft state structure associated with each hot plug pci bus instance. 101 */ 102 typedef struct pcihp { 103 struct pcihp *nextp; 104 105 /* devinfo pointer to the pci bus node */ 106 dev_info_t *dip; 107 108 /* soft state flags: PCIHP_SOFT_STATE_* */ 109 pcihp_soft_state_t soft_state; 110 111 /* global mutex to serialize exclusive access to the bus */ 112 kmutex_t mutex; 113 114 /* slot information structure */ 115 struct pcihp_slotinfo { 116 hpc_slot_t slot_hdl; /* HPS slot handle */ 117 ap_rstate_t rstate; /* state of Receptacle */ 118 ap_ostate_t ostate; /* state of the Occupant */ 119 ap_condition_t condition; /* condition of the occupant */ 120 time32_t last_change; /* XXX needed? */ 121 uint32_t event_mask; /* last event mask registered */ 122 char *name; /* slot logical name */ 123 uint_t slot_flags; 124 uint16_t slot_type; /* slot type: pci or cpci */ 125 uint16_t slot_capabilities; /* 64bit, etc. */ 126 int hs_csr_location; /* Location of HS_CSR */ 127 kmutex_t slot_mutex; /* mutex to serialize hotplug */ 128 /* operations on the slot */ 129 } slotinfo[PCI_MAX_DEVS]; 130 131 /* misc. bus attributes */ 132 uint_t bus_flags; 133 uint_t bus_state; 134 uint_t slots_active; 135 } pcihp_t; 136 137 /* 138 * Bit definitions for slot_flags field: 139 * 140 * PCIHP_SLOT_AUTO_CFG_EN This flags is set if nexus can do auto 141 * configuration of hot plugged card on this slot 142 * if the hardware reports the hot plug events. 143 * 144 * PCIHP_SLOT_DISABLED Slot is disabled for hotplug operations. 145 * 146 * PCIHP_SLOT_NOT_HEALTHY HEALTHY# signal is not OK on this slot. 147 */ 148 #define PCIHP_SLOT_AUTO_CFG_EN 0x1 149 #define PCIHP_SLOT_DISABLED 0x2 150 #define PCIHP_SLOT_NOT_HEALTHY 0x4 151 #define PCIHP_SLOT_DEV_NON_HOTPLUG 0x8 152 #define PCIHP_SLOT_ENUM_INS_PENDING 0x10 153 #define PCIHP_SLOT_ENUM_EXT_PENDING 0x20 154 155 /* 156 * Bit definitions for bus_flags field: 157 * 158 * PCIHP_BUS_66MHZ Bus is running at 66Mhz. 159 */ 160 #define PCIHP_BUS_66MHZ 0x1 161 #define PCIHP_BUS_ENUM_RADIAL 0x2 162 163 #define PCIHP_DEVICES_STR "/devices" 164 165 /* 166 * control structure for tree walk during configure/unconfigure operation. 167 */ 168 struct pcihp_config_ctrl { 169 int pci_dev; /* PCI device number for the slot */ 170 uint_t flags; /* control flags (see below) */ 171 int op; /* operation: PCIHP_ONLINE or PCIHP_OFFLINE */ 172 int rv; /* return error code */ 173 dev_info_t *dip; /* dip at which the (first) error occurred */ 174 hpc_occupant_info_t *occupant; 175 }; 176 177 /* 178 * control flags for configure/unconfigure operations on the tree. 179 * 180 * PCIHP_CFG_CONTINUE continue the operation ignoring errors 181 */ 182 #define PCIHP_CFG_CONTINUE 0x1 183 184 #define PCIHP_ONLINE 1 185 #define PCIHP_OFFLINE 0 186 187 188 /* Leaf ops (hotplug controls for target devices) */ 189 static int pcihp_open(dev_t *, int, int, cred_t *); 190 static int pcihp_close(dev_t, int, int, cred_t *); 191 static int pcihp_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); 192 193 #ifdef DEBUG 194 static int pcihp_debug = 0; 195 #define PCIHP_DEBUG(args) if (pcihp_debug >= 1) cmn_err args 196 #define PCIHP_DEBUG2(args) if (pcihp_debug >= 2) cmn_err args 197 #else 198 #define PCIHP_DEBUG(args) 199 #define PCIHP_DEBUG2(args) 200 #endif 201 202 /* 203 * We process ENUM# event one device at a time ie. as soon as we detect 204 * that a device has the right ENUM# conditions, we return. If the following 205 * variable is set to non-zero, we scan all the devices on the bus 206 * for ENUM# conditions. 207 */ 208 static int pcihp_enum_scan_all = 0; 209 /* 210 * If HSC driver cannot determine the board type (for example: it may not 211 * be possible to differentiate between a Basic Hotswap, Non Hotswap or 212 * Non-friendly Full hotswap board), the default board type is assigned 213 * to be as defined by the following variable. 214 */ 215 static int pcihp_cpci_board_type = HPC_BOARD_CPCI_NON_HS; 216 static int pcihp_cpci_led_blink = 30; 217 /* 218 * It was noted that the blue LED when written on/off would cause INS/EXT 219 * bit to be set causing an extra interrupt. Although the cPCI specifications 220 * does not imply this, this behavior is seen with some FHS silicons. 221 * Also, handling the INS/EXT bit would control the LED being On/Off. 222 * Until the behavior is confirmed, this flag could be used to enable or 223 * disable handling the LED. 224 * 0 means the silicons handles the LED behavior via the INS/EXT bit. 225 * 1 means the software must explicitly do the LED behavior. 226 */ 227 static int pcihp_cpci_blue_led = 1; 228 229 /* static functions */ 230 static pcihp_t *pcihp_create_soft_state(dev_info_t *dip); 231 static void pcihp_destroy_soft_state(dev_info_t *dip); 232 static pcihp_t *pcihp_get_soft_state(dev_info_t *dip, int cmd, int *rv); 233 static int pcihp_configure_ap(pcihp_t *pcihp_p, int pci_dev); 234 static int pcihp_unconfigure_ap(pcihp_t *pcihp_p, int pci_dev); 235 static int pcihp_new_slot_state(dev_info_t *, hpc_slot_t, 236 hpc_slot_info_t *, int); 237 static int pcihp_configure(dev_info_t *, void *); 238 static bool_t pcihp_check_status(dev_info_t *); 239 static int pcihp_event_handler(caddr_t, uint_t); 240 static dev_info_t *pcihp_devi_find(dev_info_t *dip, uint_t dev, uint_t func); 241 static int pcihp_match_dev(dev_info_t *dip, void *hdl); 242 static int pcihp_get_hs_csr(struct pcihp_slotinfo *, ddi_acc_handle_t, 243 uint8_t *); 244 static void pcihp_set_hs_csr(struct pcihp_slotinfo *, ddi_acc_handle_t, 245 uint8_t *); 246 static int pcihp_get_hs_csr_location(ddi_acc_handle_t); 247 static int pcihp_handle_enum(pcihp_t *, int, int, int); 248 static void pcihp_hs_csr_op(pcihp_t *, int, int); 249 static int pcihp_enum_slot(pcihp_t *, struct pcihp_slotinfo *, int, int, int); 250 static int pcihp_handle_enum_extraction(pcihp_t *, int, int, int); 251 static int pcihp_handle_enum_insertion(pcihp_t *, int, int, int); 252 static int pcihp_add_dummy_reg_property(dev_info_t *, uint_t, uint_t, uint_t); 253 static int pcihp_config_setup(dev_info_t **, ddi_acc_handle_t *, 254 dev_info_t **, int, pcihp_t *); 255 static void pcihp_config_teardown(ddi_acc_handle_t *, 256 dev_info_t **, int, pcihp_t *); 257 static int pcihp_get_board_type(struct pcihp_slotinfo *); 258 /* sysevent function */ 259 static void pcihp_gen_sysevent(char *, int, int, dev_info_t *, int); 260 261 static int pcihp_list_occupants(dev_info_t *, void *); 262 static int pcihp_indirect_map(dev_info_t *dip); 263 264 #if 0 265 static void pcihp_probe_slot_state(dev_info_t *, int, hpc_slot_state_t *); 266 #endif 267 268 int pcihp_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, 269 int flags, char *name, caddr_t valuep, int *lengthp); 270 271 struct cb_ops pcihp_cb_ops = { 272 pcihp_open, /* open */ 273 pcihp_close, /* close */ 274 nodev, /* strategy */ 275 nodev, /* print */ 276 nodev, /* dump */ 277 nodev, /* read */ 278 nodev, /* write */ 279 pcihp_ioctl, /* ioctl */ 280 nodev, /* devmap */ 281 nodev, /* mmap */ 282 nodev, /* segmap */ 283 nochpoll, /* poll */ 284 pcihp_prop_op, /* cb_prop_op */ 285 NULL, /* streamtab */ 286 D_NEW | D_MP | D_HOTPLUG, /* Driver compatibility flag */ 287 CB_REV, /* rev */ 288 nodev, /* int (*cb_aread)() */ 289 nodev /* int (*cb_awrite)() */ 290 }; 291 292 /* 293 * local data 294 */ 295 296 int pcihp_autocfg_enabled = 1; /* auto config is enabled by default */ 297 298 static kmutex_t pcihp_mutex; /* mutex to protect the following data */ 299 static pcihp_t *pcihp_head = NULL; 300 301 static kmutex_t pcihp_open_mutex; /* mutex to protect open/close/uninit */ 302 static int pci_devlink_flags = 0; 303 304 /* 305 * Module linkage information for the kernel. 306 */ 307 extern struct mod_ops mod_miscops; 308 static struct modlmisc modlmisc = { 309 &mod_miscops, 310 "PCI nexus hotplug support", 311 }; 312 313 static struct modlinkage modlinkage = { 314 MODREV_1, 315 &modlmisc, 316 NULL 317 }; 318 319 int 320 _init(void) 321 { 322 int error; 323 324 mutex_init(&pcihp_mutex, NULL, MUTEX_DRIVER, NULL); 325 mutex_init(&pcihp_open_mutex, NULL, MUTEX_DRIVER, NULL); 326 if ((error = mod_install(&modlinkage)) != 0) { 327 mutex_destroy(&pcihp_open_mutex); 328 mutex_destroy(&pcihp_mutex); 329 } 330 331 return (error); 332 } 333 334 int 335 _fini(void) 336 { 337 return (EBUSY); 338 } 339 340 int 341 _info(struct modinfo *modinfop) 342 { 343 return (mod_info(&modlinkage, modinfop)); 344 } 345 346 static pcihp_t * 347 pcihp_create_soft_state( 348 dev_info_t *dip) 349 { 350 pcihp_t *pcihp_p; 351 352 pcihp_p = kmem_zalloc(sizeof (struct pcihp), KM_SLEEP); 353 354 pcihp_p->dip = dip; 355 mutex_init(&pcihp_p->mutex, NULL, MUTEX_DRIVER, NULL); 356 357 mutex_enter(&pcihp_mutex); 358 pcihp_p->nextp = pcihp_head; 359 pcihp_head = pcihp_p; 360 pcihp_p->bus_state = PCIHP_BUS_INITIALIZING; 361 pcihp_p->slots_active = 0; 362 mutex_exit(&pcihp_mutex); 363 364 return (pcihp_p); 365 } 366 367 static void 368 pcihp_destroy_soft_state( 369 dev_info_t *dip) 370 { 371 pcihp_t *p; 372 pcihp_t **pp; 373 374 mutex_enter(&pcihp_mutex); 375 pp = &pcihp_head; 376 while ((p = *pp) != NULL) { 377 if (p->dip == dip) { 378 *pp = p->nextp; 379 kmem_free(p, sizeof (struct pcihp)); 380 break; 381 } 382 pp = &(p->nextp); 383 } 384 mutex_exit(&pcihp_mutex); 385 } 386 387 /* 388 * This function should be imported by client nexus drivers as their 389 * devo_getinfo() entry point. 390 */ 391 392 /* ARGSUSED */ 393 int 394 pcihp_info( 395 dev_info_t *dip, 396 ddi_info_cmd_t cmd, 397 void *arg, 398 void **result) 399 { 400 pcihp_t *pcihp_p; 401 major_t major; 402 minor_t minor; 403 int instance; 404 405 major = getmajor((dev_t)arg); 406 minor = getminor((dev_t)arg); 407 instance = PCIHP_AP_MINOR_NUM_TO_INSTANCE(minor); 408 409 switch (cmd) { 410 default: 411 return (DDI_FAILURE); 412 413 case DDI_INFO_DEVT2INSTANCE: 414 *result = (void *)(intptr_t)instance; 415 return (DDI_SUCCESS); 416 417 case DDI_INFO_DEVT2DEVINFO: 418 mutex_enter(&pcihp_mutex); 419 pcihp_p = pcihp_head; 420 while (pcihp_p != NULL) { 421 if (ddi_driver_major(pcihp_p->dip) == 422 major && ddi_get_instance(pcihp_p->dip) == 423 instance) { 424 *result = (void *)pcihp_p->dip; 425 mutex_exit(&pcihp_mutex); 426 return (DDI_SUCCESS); 427 } 428 pcihp_p = pcihp_p->nextp; 429 } 430 mutex_exit(&pcihp_mutex); 431 return (DDI_FAILURE); 432 } 433 } 434 435 /* 436 * This function retrieves the hot plug soft state and performs the 437 * following primitive commands while the soft state is locked: 438 * mark the bus unconfigured, increment slot activity, decrement 439 * slot activity and noop. 440 */ 441 442 /* ARGSUSED */ 443 static pcihp_t * 444 pcihp_get_soft_state( 445 dev_info_t *dip, int cmd, int *rv) 446 { 447 pcihp_t *pcihp_p; 448 449 *rv = PCIHP_SUCCESS; 450 mutex_enter(&pcihp_mutex); 451 pcihp_p = pcihp_head; 452 while (pcihp_p != NULL) { 453 if (pcihp_p->dip == dip) { 454 switch (cmd) { 455 case PCIHP_DR_BUS_UNCONFIGURE: 456 if (pcihp_p->slots_active == 0) 457 pcihp_p->bus_state = 458 PCIHP_BUS_UNCONFIGURED; 459 else 460 *rv = PCIHP_FAILURE; 461 break; 462 case PCIHP_DR_SLOT_ENTER: 463 if (pcihp_p->bus_state == 464 PCIHP_BUS_UNCONFIGURED) 465 *rv = PCIHP_FAILURE; 466 else 467 pcihp_p->slots_active++; 468 break; 469 case PCIHP_DR_SLOT_EXIT: 470 ASSERT(pcihp_p->slots_active > 0); 471 if (pcihp_p->slots_active == 0) 472 cmn_err(CE_PANIC, 473 "pcihp (%s%d): mismatched slot" 474 " activity", 475 ddi_driver_name(dip), 476 ddi_get_instance(dip)); 477 else 478 pcihp_p->slots_active--; 479 break; 480 case PCIHP_DR_NOOP: 481 break; 482 default: 483 *rv = PCIHP_FAILURE; 484 break; 485 } 486 mutex_exit(&pcihp_mutex); 487 return (pcihp_p); 488 } 489 pcihp_p = pcihp_p->nextp; 490 } 491 mutex_exit(&pcihp_mutex); 492 493 return (NULL); 494 } 495 496 /* ARGSUSED3 */ 497 static int 498 pcihp_open(dev_t *devp, int flags, int otyp, cred_t *credp) 499 { 500 dev_info_t *self; 501 pcihp_t *pcihp_p; 502 minor_t minor; 503 int pci_dev; 504 int rv; 505 506 /* 507 * Make sure the open is for the right file type. 508 */ 509 if (otyp != OTYP_CHR) 510 return (EINVAL); 511 512 mutex_enter(&pcihp_open_mutex); 513 /* 514 * Get the soft state structure. 515 */ 516 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)*devp, 517 (void **)&self) != DDI_SUCCESS) { 518 mutex_exit(&pcihp_open_mutex); 519 return (ENXIO); 520 } 521 522 pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_NOOP, &rv); 523 ASSERT(pcihp_p != NULL); 524 525 mutex_enter(&pcihp_p->mutex); 526 527 /* 528 * If the pci_dev is valid then the minor device is an 529 * AP. Otherwise it is ":devctl" minor device. 530 */ 531 minor = getminor(*devp); 532 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(minor); 533 if (pci_dev < PCI_MAX_DEVS) { 534 struct pcihp_slotinfo *slotinfop; 535 536 slotinfop = &pcihp_p->slotinfo[pci_dev]; 537 if (slotinfop->slot_hdl == NULL) { 538 mutex_exit(&pcihp_p->mutex); 539 mutex_exit(&pcihp_open_mutex); 540 return (ENXIO); 541 } 542 } 543 544 /* 545 * Handle the open by tracking the device state. 546 * 547 * Note: Needs review w.r.t exclusive access to AP or the bus. 548 * Currently in the pci plug-in we don't use EXCL open at all 549 * so the code below implements EXCL access on the bus. 550 */ 551 552 /* enforce exclusive access to the bus */ 553 if ((pcihp_p->soft_state == PCIHP_SOFT_STATE_OPEN_EXCL) || 554 ((flags & FEXCL) && 555 (pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED))) { 556 mutex_exit(&pcihp_p->mutex); 557 mutex_exit(&pcihp_open_mutex); 558 return (EBUSY); 559 } 560 561 if (flags & FEXCL) 562 pcihp_p->soft_state = PCIHP_SOFT_STATE_OPEN_EXCL; 563 else 564 pcihp_p->soft_state = PCIHP_SOFT_STATE_OPEN; 565 566 mutex_exit(&pcihp_p->mutex); 567 mutex_exit(&pcihp_open_mutex); 568 569 return (0); 570 } 571 572 /* ARGSUSED */ 573 static int 574 pcihp_close(dev_t dev, int flags, int otyp, cred_t *credp) 575 { 576 dev_info_t *self; 577 pcihp_t *pcihp_p; 578 int rv; 579 580 if (otyp != OTYP_CHR) 581 return (EINVAL); 582 583 mutex_enter(&pcihp_open_mutex); 584 585 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)dev, 586 (void **)&self) != DDI_SUCCESS) { 587 mutex_exit(&pcihp_open_mutex); 588 return (ENXIO); 589 } 590 591 pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_NOOP, &rv); 592 ASSERT(pcihp_p != NULL); 593 594 mutex_enter(&pcihp_p->mutex); 595 pcihp_p->soft_state = PCIHP_SOFT_STATE_CLOSED; 596 mutex_exit(&pcihp_p->mutex); 597 598 mutex_exit(&pcihp_open_mutex); 599 600 return (0); 601 } 602 603 static int 604 pcihp_list_occupants(dev_info_t *dip, void *hdl) 605 { 606 int pci_dev; 607 struct pcihp_config_ctrl *ctrl = (struct pcihp_config_ctrl *)hdl; 608 pci_regspec_t *pci_rp; 609 int length; 610 major_t major; 611 612 /* 613 * Get the PCI device number information from the devinfo 614 * node. Since the node may not have the address field 615 * setup (this is done in the DDI_INITCHILD of the parent) 616 * we look up the 'reg' property to decode that information. 617 */ 618 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, 619 DDI_PROP_DONTPASS, "reg", (int **)&pci_rp, 620 (uint_t *)&length) != DDI_PROP_SUCCESS) { 621 ctrl->rv = DDI_FAILURE; 622 ctrl->dip = dip; 623 return (DDI_WALK_TERMINATE); 624 } 625 626 /* get the pci device id information */ 627 pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 628 629 /* 630 * free the memory allocated by ddi_prop_lookup_int_array 631 */ 632 ddi_prop_free(pci_rp); 633 634 /* 635 * Match the node for the device number of the slot. 636 */ 637 if (pci_dev == ctrl->pci_dev) { /* node is a match */ 638 639 major = ddi_driver_major(dip); 640 641 /* 642 * If the node is not yet attached, then don't list it 643 * as an occupant. This is valid, since nothing can be 644 * consuming it until it is attached, and cfgadm will 645 * ask for the property explicitly which will cause it 646 * to be re-freshed right before checking with rcm. 647 */ 648 if ((major == -1) || !i_ddi_devi_attached(dip)) 649 return (DDI_WALK_PRUNECHILD); 650 651 /* 652 * If we have used all our occupants then print mesage 653 * and terminate walk. 654 */ 655 if (ctrl->occupant->i >= HPC_MAX_OCCUPANTS) { 656 cmn_err(CE_WARN, 657 "pcihp (%s%d): unable to list all occupants", 658 ddi_driver_name(ddi_get_parent(dip)), 659 ddi_get_instance(ddi_get_parent(dip))); 660 return (DDI_WALK_TERMINATE); 661 } 662 663 /* 664 * No need to hold the dip as ddi_walk_devs 665 * has already arranged that for us. 666 */ 667 ctrl->occupant->id[ctrl->occupant->i] = 668 kmem_alloc(sizeof (char[MAXPATHLEN]), KM_SLEEP); 669 (void) ddi_pathname(dip, 670 (char *)ctrl->occupant->id[ctrl->occupant->i]); 671 ctrl->occupant->i++; 672 } 673 674 /* 675 * continue the walk to the next sibling to look for a match 676 * or to find other nodes if this card is a multi-function card. 677 */ 678 return (DDI_WALK_PRUNECHILD); 679 } 680 681 static void 682 pcihp_create_occupant_props_nolock(dev_info_t *self, dev_t dev, int pci_dev) 683 { 684 struct pcihp_config_ctrl ctrl; 685 hpc_occupant_info_t *occupant; 686 int i; 687 688 occupant = kmem_alloc(sizeof (hpc_occupant_info_t), KM_SLEEP); 689 occupant->i = 0; 690 691 ctrl.flags = 0; 692 ctrl.dip = NULL; 693 ctrl.rv = NDI_SUCCESS; 694 ctrl.pci_dev = pci_dev; 695 ctrl.op = 55; /* should define DRYRUN */ 696 ctrl.occupant = occupant; 697 698 ddi_walk_devs(ddi_get_child(self), pcihp_list_occupants, 699 (void *)&ctrl); 700 701 if (occupant->i == 0) { 702 /* no occupants right now, need to create stub property */ 703 char *c[] = { "" }; 704 (void) ddi_prop_update_string_array(dev, self, "pci-occupant", 705 c, 1); 706 } else { 707 (void) ddi_prop_update_string_array(dev, self, "pci-occupant", 708 occupant->id, occupant->i); 709 } 710 for (i = 0; i < occupant->i; i++) { 711 kmem_free(occupant->id[i], sizeof (char[MAXPATHLEN])); 712 } 713 714 kmem_free(occupant, sizeof (hpc_occupant_info_t)); 715 } 716 717 static void 718 pcihp_create_occupant_props(dev_info_t *self, dev_t dev, int pci_dev) 719 { 720 int circular; 721 722 ndi_devi_enter(self, &circular); 723 pcihp_create_occupant_props_nolock(self, dev, pci_dev); 724 ndi_devi_exit(self, circular); 725 } 726 727 static void 728 pcihp_delete_occupant_props(dev_info_t *dip, dev_t dev) 729 { 730 if (ddi_prop_remove(dev, dip, "pci-occupant") 731 != DDI_PROP_SUCCESS) 732 return; /* add error handling */ 733 734 } 735 736 /* 737 * pcihp_ioctl: devctl hotplug controls 738 */ 739 /* ARGSUSED */ 740 static int 741 pcihp_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, 742 int *rvalp) 743 { 744 pcihp_t *pcihp_p; 745 dev_info_t *self; 746 struct devctl_iocdata *dcp; 747 uint_t bus_state; 748 int rv = 0; 749 int pci_dev; 750 struct pcihp_slotinfo *slotinfop; 751 hpc_slot_state_t rstate; 752 devctl_ap_state_t ap_state; 753 struct hpc_control_data hpc_ctrldata; 754 struct hpc_led_info led_info; 755 time_t time; 756 int state_locking; 757 int state_unlocking; 758 int rval; 759 char *pathname = NULL; 760 761 /* 762 * read devctl ioctl data before soft state retrieval 763 */ 764 if ((cmd != DEVCTL_AP_CONTROL) && 765 ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS) 766 return (EFAULT); 767 768 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)dev, 769 (void **)&self) != DDI_SUCCESS) { 770 if (cmd != DEVCTL_AP_CONTROL) 771 ndi_dc_freehdl(dcp); 772 return (ENXIO); 773 } 774 775 switch (cmd) { 776 case DEVCTL_AP_INSERT: 777 case DEVCTL_AP_REMOVE: 778 case DEVCTL_AP_CONNECT: 779 case DEVCTL_AP_DISCONNECT: 780 case DEVCTL_AP_CONFIGURE: 781 case DEVCTL_AP_UNCONFIGURE: 782 case DEVCTL_AP_GETSTATE: 783 case DEVCTL_AP_CONTROL: 784 state_locking = PCIHP_DR_SLOT_ENTER; 785 state_unlocking = PCIHP_DR_SLOT_EXIT; 786 break; 787 default: 788 state_locking = PCIHP_DR_NOOP; 789 state_unlocking = PCIHP_DR_NOOP; 790 break; 791 } 792 793 pcihp_p = pcihp_get_soft_state(self, state_locking, &rval); 794 ASSERT(pcihp_p != NULL); 795 796 if (rval == PCIHP_FAILURE) { 797 (void) ddi_pathname(pcihp_p->dip, pathname); 798 PCIHP_DEBUG((CE_WARN, "Hot Plug bus %s instance is unconfigured" 799 " while slot activity is requested\n", pathname)); 800 if (cmd != DEVCTL_AP_CONTROL) 801 ndi_dc_freehdl(dcp); 802 return (EBUSY); 803 } 804 805 /* 806 * For attachment points the lower 8 bits of the minor number is the 807 * PCI device number. 808 */ 809 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(dev)); 810 811 /* 812 * We can use the generic implementation for these ioctls 813 */ 814 switch (cmd) { 815 case DEVCTL_DEVICE_GETSTATE: 816 case DEVCTL_DEVICE_ONLINE: 817 case DEVCTL_DEVICE_OFFLINE: 818 case DEVCTL_BUS_GETSTATE: 819 rv = ndi_devctl_ioctl(self, cmd, arg, mode, 0); 820 ndi_dc_freehdl(dcp); 821 return (rv); 822 default: 823 break; 824 } 825 826 switch (cmd) { 827 828 case DEVCTL_DEVICE_RESET: 829 rv = ENOTSUP; 830 break; 831 832 case DEVCTL_BUS_QUIESCE: 833 if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS) 834 if (bus_state == BUS_QUIESCED) 835 break; 836 (void) ndi_set_bus_state(self, BUS_QUIESCED); 837 break; 838 839 case DEVCTL_BUS_UNQUIESCE: 840 if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS) 841 if (bus_state == BUS_ACTIVE) 842 break; 843 (void) ndi_set_bus_state(self, BUS_ACTIVE); 844 break; 845 846 case DEVCTL_BUS_RESET: 847 rv = ENOTSUP; 848 break; 849 850 case DEVCTL_BUS_RESETALL: 851 rv = ENOTSUP; 852 break; 853 854 case DEVCTL_AP_CONNECT: 855 case DEVCTL_AP_DISCONNECT: 856 /* 857 * CONNECT(DISCONNECT) the hot plug slot to(from) the bus. 858 * 859 * For cPCI slots this operation is a nop so the HPC 860 * driver may return success if it is a valid operation. 861 */ 862 case DEVCTL_AP_INSERT: 863 case DEVCTL_AP_REMOVE: 864 /* 865 * Prepare the slot for INSERT/REMOVE operation. 866 */ 867 868 /* 869 * check for valid request: 870 * 1. It is a hotplug slot. 871 * 2. The slot has no occupant that is in 872 * the 'configured' state. 873 */ 874 if (pci_dev >= PCI_MAX_DEVS) { 875 rv = ENXIO; 876 break; 877 } 878 slotinfop = &pcihp_p->slotinfo[pci_dev]; 879 880 mutex_enter(&slotinfop->slot_mutex); 881 882 if ((slotinfop->slot_hdl == NULL) || 883 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 884 rv = ENXIO; 885 mutex_exit(&slotinfop->slot_mutex); 886 break; 887 } 888 889 /* the slot occupant must be in the UNCONFIGURED state */ 890 if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) { 891 rv = EINVAL; 892 mutex_exit(&slotinfop->slot_mutex); 893 break; 894 } 895 /* 896 * Call the HPC driver to perform the operation on the slot. 897 */ 898 899 switch (cmd) { 900 case DEVCTL_AP_INSERT: 901 rv = hpc_nexus_insert(slotinfop->slot_hdl, NULL, 0); 902 break; 903 case DEVCTL_AP_REMOVE: 904 rv = hpc_nexus_remove(slotinfop->slot_hdl, NULL, 0); 905 break; 906 case DEVCTL_AP_CONNECT: 907 rv = hpc_nexus_connect(slotinfop->slot_hdl, NULL, 0); 908 if (rv == HPC_SUCCESS) { 909 slotinfop->rstate = AP_RSTATE_CONNECTED; 910 911 if (drv_getparm(TIME, (void *)&time) != 912 DDI_SUCCESS) 913 slotinfop->last_change = (time_t)-1; 914 else 915 slotinfop->last_change = (time32_t)time; 916 917 slotinfop = &pcihp_p->slotinfo[pci_dev]; 918 pcihp_gen_sysevent(slotinfop->name, 919 PCIHP_DR_AP_STATE_CHANGE, 920 SE_NO_HINT, pcihp_p->dip, 921 KM_SLEEP); 922 } 923 break; 924 case DEVCTL_AP_DISCONNECT: 925 rv = hpc_nexus_disconnect(slotinfop->slot_hdl, NULL, 0); 926 if (rv == HPC_SUCCESS) { 927 slotinfop->rstate = AP_RSTATE_DISCONNECTED; 928 929 if (drv_getparm(TIME, (void *)&time) != 930 DDI_SUCCESS) 931 slotinfop->last_change = (time_t)-1; 932 else 933 slotinfop->last_change = (time32_t)time; 934 935 slotinfop = &pcihp_p->slotinfo[pci_dev]; 936 pcihp_gen_sysevent(slotinfop->name, 937 PCIHP_DR_AP_STATE_CHANGE, 938 SE_NO_HINT, pcihp_p->dip, 939 KM_SLEEP); 940 } 941 break; 942 } 943 mutex_exit(&slotinfop->slot_mutex); 944 945 switch (rv) { 946 case HPC_ERR_INVALID: 947 rv = ENXIO; 948 break; 949 case HPC_ERR_NOTSUPPORTED: 950 rv = ENOTSUP; 951 break; 952 case HPC_ERR_FAILED: 953 rv = EIO; 954 break; 955 } 956 957 break; 958 959 case DEVCTL_AP_CONFIGURE: 960 /* 961 * ************************************** 962 * CONFIGURE the occupant in the slot. 963 * ************************************** 964 */ 965 slotinfop = &pcihp_p->slotinfo[pci_dev]; 966 967 mutex_enter(&slotinfop->slot_mutex); 968 969 rv = pcihp_configure_ap(pcihp_p, pci_dev); 970 if (rv == HPC_SUCCESS) { 971 pcihp_gen_sysevent(slotinfop->name, 972 PCIHP_DR_AP_STATE_CHANGE, 973 SE_NO_HINT, pcihp_p->dip, KM_SLEEP); 974 pcihp_create_occupant_props(self, dev, pci_dev); 975 } 976 mutex_exit(&slotinfop->slot_mutex); 977 978 break; 979 980 case DEVCTL_AP_UNCONFIGURE: 981 /* 982 * ************************************** 983 * UNCONFIGURE the occupant in the slot. 984 * ************************************** 985 */ 986 slotinfop = &pcihp_p->slotinfo[pci_dev]; 987 988 mutex_enter(&slotinfop->slot_mutex); 989 990 rv = pcihp_unconfigure_ap(pcihp_p, pci_dev); 991 992 if (rv == HPC_SUCCESS) { 993 pcihp_gen_sysevent(slotinfop->name, 994 PCIHP_DR_AP_STATE_CHANGE, 995 SE_NO_HINT, pcihp_p->dip, KM_SLEEP); 996 pcihp_delete_occupant_props(pcihp_p->dip, dev); 997 } 998 mutex_exit(&slotinfop->slot_mutex); 999 1000 break; 1001 1002 case DEVCTL_AP_GETSTATE: 1003 { 1004 int mutex_held; 1005 1006 /* 1007 * return the state of Attachment Point. 1008 * 1009 * If the occupant is in UNCONFIGURED state then 1010 * we should get the receptacle state from the 1011 * HPC driver because the receptacle state 1012 * maintained in the nexus may not be accurate. 1013 */ 1014 1015 /* 1016 * check for valid request: 1017 * 1. It is a hotplug slot. 1018 */ 1019 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1020 1021 /* try to acquire the slot mutex */ 1022 mutex_held = mutex_tryenter(&slotinfop->slot_mutex); 1023 1024 if (pci_dev >= PCI_MAX_DEVS || slotinfop->slot_hdl == NULL) { 1025 rv = ENXIO; 1026 if (mutex_held) { 1027 mutex_exit(&slotinfop->slot_mutex); 1028 } 1029 break; 1030 } 1031 1032 if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED) { 1033 if (hpc_nexus_control(slotinfop->slot_hdl, 1034 HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0) { 1035 rv = EIO; 1036 if (mutex_held) 1037 mutex_exit(&slotinfop->slot_mutex); 1038 break; 1039 } 1040 slotinfop->rstate = (ap_rstate_t)rstate; 1041 } 1042 1043 ap_state.ap_rstate = slotinfop->rstate; 1044 ap_state.ap_ostate = slotinfop->ostate; 1045 ap_state.ap_condition = slotinfop->condition; 1046 ap_state.ap_last_change = slotinfop->last_change; 1047 ap_state.ap_error_code = 0; /* XXX */ 1048 if (mutex_held) 1049 ap_state.ap_in_transition = 0; /* AP is not busy */ 1050 else 1051 ap_state.ap_in_transition = 1; /* AP is busy */ 1052 1053 if (mutex_held) 1054 mutex_exit(&slotinfop->slot_mutex); 1055 1056 /* copy the return-AP-state information to the user space */ 1057 if (ndi_dc_return_ap_state(&ap_state, dcp) != NDI_SUCCESS) 1058 rv = EFAULT; 1059 1060 break; 1061 1062 } 1063 case DEVCTL_AP_CONTROL: 1064 /* 1065 * HPC control functions: 1066 * HPC_CTRL_ENABLE_SLOT/HPC_CTRL_DISABLE_SLOT 1067 * Changes the state of the slot and preserves 1068 * the state across the reboot. 1069 * HPC_CTRL_ENABLE_AUTOCFG/HPC_CTRL_DISABLE_AUTOCFG 1070 * Enables or disables the auto configuration 1071 * of hot plugged occupant if the hardware 1072 * supports notification of the hot plug 1073 * events. 1074 * HPC_CTRL_GET_LED_STATE/HPC_CTRL_SET_LED_STATE 1075 * Controls the state of an LED. 1076 * HPC_CTRL_GET_SLOT_INFO 1077 * Get slot information data structure 1078 * (hpc_slot_info_t). 1079 * HPC_CTRL_GET_BOARD_TYPE 1080 * Get board type information (hpc_board_type_t). 1081 * HPC_CTRL_GET_CARD_INFO 1082 * Get card information (hpc_card_info_t). 1083 * 1084 * These control functions are used by the cfgadm plug-in 1085 * to implement "-x" and "-v" options. 1086 */ 1087 1088 /* copy user ioctl data first */ 1089 switch (ddi_model_convert_from(mode & FMODELS)) { 1090 case DDI_MODEL_ILP32: { 1091 struct hpc_control32_data hpc_ctrldata32; 1092 1093 if (copyin((void *)arg, (void *)&hpc_ctrldata32, 1094 sizeof (struct hpc_control32_data)) != 0) { 1095 rv = EFAULT; 1096 break; 1097 } 1098 hpc_ctrldata.cmd = hpc_ctrldata32.cmd; 1099 hpc_ctrldata.data = 1100 (void *)(intptr_t)hpc_ctrldata32.data; 1101 break; 1102 } 1103 case DDI_MODEL_NONE: 1104 if (copyin((void *)arg, (void *)&hpc_ctrldata, 1105 sizeof (struct hpc_control_data)) != 0) { 1106 rv = EFAULT; 1107 } 1108 break; 1109 default: 1110 rv = EFAULT; 1111 break; 1112 } 1113 if (rv == EFAULT) 1114 break; 1115 /* 1116 * check for valid request: 1117 * 1. It is a hotplug slot. 1118 */ 1119 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1120 1121 mutex_enter(&slotinfop->slot_mutex); 1122 1123 if (pci_dev >= PCI_MAX_DEVS || slotinfop->slot_hdl == NULL) { 1124 rv = ENXIO; 1125 mutex_exit(&slotinfop->slot_mutex); 1126 break; 1127 } 1128 1129 switch (hpc_ctrldata.cmd) { 1130 1131 case HPC_CTRL_GET_LED_STATE: 1132 /* copy the led info from the user space */ 1133 if (copyin(hpc_ctrldata.data, (void *)&led_info, 1134 sizeof (hpc_led_info_t)) != 0) { 1135 rv = EFAULT; 1136 break; 1137 } 1138 1139 /* get the state of LED information */ 1140 if (hpc_nexus_control(slotinfop->slot_hdl, 1141 HPC_CTRL_GET_LED_STATE, (caddr_t)&led_info) != 0) { 1142 1143 if (rv != ENOTSUP) 1144 rv = EIO; 1145 1146 break; 1147 } 1148 1149 /* copy the led info to the user space */ 1150 if (copyout((void *)&led_info, hpc_ctrldata.data, 1151 sizeof (hpc_led_info_t)) != 0) { 1152 rv = EFAULT; 1153 break; 1154 } 1155 1156 break; 1157 1158 case HPC_CTRL_SET_LED_STATE: 1159 /* copy the led info from the user space */ 1160 if (copyin(hpc_ctrldata.data, (void *)&led_info, 1161 sizeof (hpc_led_info_t)) != 0) { 1162 rv = EFAULT; 1163 break; 1164 } 1165 1166 /* set the state of an LED */ 1167 rv = hpc_nexus_control(slotinfop->slot_hdl, 1168 HPC_CTRL_SET_LED_STATE, (caddr_t)&led_info); 1169 1170 /* 1171 * If the Hotswap Controller does not support 1172 * LED management (as you would find typically 1173 * in the cPCI industry), then we handle the 1174 * blue LED on/off/blink operations, just in 1175 * case it helps slot identification. 1176 */ 1177 if ((rv == HPC_ERR_NOTSUPPORTED) && 1178 (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI)) { 1179 if (led_info.led != HPC_ATTN_LED) 1180 break; 1181 1182 switch (led_info.state) { 1183 case HPC_LED_OFF: 1184 pcihp_hs_csr_op(pcihp_p, 1185 pci_dev, 1186 HPC_EVENT_SLOT_BLUE_LED_OFF); 1187 rv = 0; 1188 break; 1189 case HPC_LED_ON: 1190 /* 1191 * Please note that leaving 1192 * LED ON could be dangerous 1193 * as it means it is Ok to 1194 * remove the board, which 1195 * is not what we want to 1196 * convey. So it is upto the 1197 * user to take care of this 1198 * situation and usage. 1199 * 1200 * Normally, a Blink command 1201 * is more appropriate for 1202 * identifying a board. 1203 */ 1204 pcihp_hs_csr_op(pcihp_p, 1205 pci_dev, 1206 HPC_EVENT_SLOT_BLUE_LED_ON); 1207 rv = 0; 1208 break; 1209 case HPC_LED_BLINK: 1210 { 1211 int bl; 1212 1213 for (bl = 0; bl < 2; bl++) { 1214 pcihp_hs_csr_op(pcihp_p, 1215 pci_dev, 1216 HPC_EVENT_SLOT_BLUE_LED_ON); 1217 delay(pcihp_cpci_led_blink); 1218 pcihp_hs_csr_op(pcihp_p, 1219 pci_dev, 1220 HPC_EVENT_SLOT_BLUE_LED_OFF); 1221 delay(pcihp_cpci_led_blink); 1222 } 1223 rv = 0; 1224 break; 1225 } 1226 default: 1227 break; 1228 } 1229 } 1230 1231 if (rv == HPC_ERR_FAILED) 1232 rv = EIO; 1233 break; 1234 1235 case HPC_CTRL_ENABLE_SLOT: 1236 1237 /* 1238 * If slot already enabled, do not send a duplicate 1239 * control message to the HPC driver. 1240 */ 1241 if ((slotinfop->slot_flags & PCIHP_SLOT_DISABLED) == 0) 1242 break; 1243 1244 /* tell the HPC driver also */ 1245 if (hpc_nexus_control(slotinfop->slot_hdl, 1246 HPC_CTRL_ENABLE_SLOT, NULL) != HPC_SUCCESS) { 1247 rv = EIO; 1248 break; 1249 } 1250 1251 /* 1252 * Enable the slot for hotplug operations. 1253 */ 1254 slotinfop->slot_flags &= ~PCIHP_SLOT_DISABLED; 1255 1256 slotinfop->condition = AP_COND_UNKNOWN; 1257 1258 /* XXX need to preserve this state across reboot? */ 1259 1260 break; 1261 1262 case HPC_CTRL_DISABLE_SLOT: 1263 1264 /* Do not disable if occupant configured */ 1265 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 1266 rv = EAGAIN; 1267 break; 1268 } 1269 1270 /* tell the HPC driver also */ 1271 if (hpc_nexus_control(slotinfop->slot_hdl, 1272 HPC_CTRL_DISABLE_SLOT, NULL) != HPC_SUCCESS) { 1273 rv = EIO; 1274 break; 1275 } 1276 1277 /* 1278 * Disable the slot for hotplug operations. 1279 */ 1280 slotinfop->slot_flags |= PCIHP_SLOT_DISABLED; 1281 1282 slotinfop->condition = AP_COND_UNUSABLE; 1283 1284 /* XXX need to preserve this state across reboot? */ 1285 1286 break; 1287 1288 case HPC_CTRL_ENABLE_AUTOCFG: 1289 /* 1290 * Enable auto configuration on this slot. 1291 */ 1292 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 1293 1294 /* tell the HPC driver also */ 1295 (void) hpc_nexus_control(slotinfop->slot_hdl, 1296 HPC_CTRL_ENABLE_AUTOCFG, NULL); 1297 1298 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) 1299 pcihp_hs_csr_op(pcihp_p, pci_dev, 1300 HPC_EVENT_ENABLE_ENUM); 1301 break; 1302 1303 case HPC_CTRL_DISABLE_AUTOCFG: 1304 /* 1305 * Disable auto configuration on this slot. 1306 */ 1307 slotinfop->slot_flags &= ~PCIHP_SLOT_AUTO_CFG_EN; 1308 1309 /* tell the HPC driver also */ 1310 (void) hpc_nexus_control(slotinfop->slot_hdl, 1311 HPC_CTRL_DISABLE_AUTOCFG, NULL); 1312 1313 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) 1314 pcihp_hs_csr_op(pcihp_p, pci_dev, 1315 HPC_EVENT_DISABLE_ENUM); 1316 break; 1317 1318 case HPC_CTRL_GET_BOARD_TYPE: 1319 { 1320 hpc_board_type_t board_type; 1321 1322 /* 1323 * Get board type data structure, hpc_board_type_t. 1324 */ 1325 board_type = pcihp_get_board_type(slotinfop); 1326 if (board_type == -1) { 1327 rv = ENXIO; 1328 break; 1329 } 1330 1331 /* copy the board type info to the user space */ 1332 if (copyout((void *)&board_type, hpc_ctrldata.data, 1333 sizeof (hpc_board_type_t)) != 0) { 1334 rv = ENXIO; 1335 break; 1336 } 1337 1338 break; 1339 } 1340 1341 case HPC_CTRL_GET_SLOT_INFO: 1342 { 1343 hpc_slot_info_t slot_info; 1344 1345 /* 1346 * Get slot information structure, hpc_slot_info_t. 1347 */ 1348 slot_info.version = HPC_SLOT_INFO_VERSION; 1349 slot_info.slot_type = slotinfop->slot_type; 1350 slot_info.pci_slot_capabilities = 1351 slotinfop->slot_capabilities; 1352 slot_info.pci_dev_num = (uint16_t)pci_dev; 1353 (void) strcpy(slot_info.pci_slot_name, slotinfop->name); 1354 1355 /* copy the slot info structure to the user space */ 1356 if (copyout((void *)&slot_info, hpc_ctrldata.data, 1357 sizeof (hpc_slot_info_t)) != 0) { 1358 rv = EFAULT; 1359 break; 1360 } 1361 1362 break; 1363 } 1364 1365 case HPC_CTRL_GET_CARD_INFO: 1366 { 1367 hpc_card_info_t card_info; 1368 ddi_acc_handle_t handle; 1369 dev_info_t *cdip; 1370 1371 /* 1372 * Get card information structure, hpc_card_info_t. 1373 */ 1374 1375 /* verify that the card is configured */ 1376 if ((slotinfop->ostate != AP_OSTATE_CONFIGURED) || 1377 ((cdip = pcihp_devi_find(self, 1378 pci_dev, 0)) == NULL)) { 1379 /* 1380 * either the card is not present or 1381 * it is not configured. 1382 */ 1383 rv = ENXIO; 1384 break; 1385 } 1386 1387 /* 1388 * If declared failed, don't allow Config operations. 1389 * Otherwise, if good or failing, it is assumed Ok 1390 * to get config data. 1391 */ 1392 if (slotinfop->condition == AP_COND_FAILED) { 1393 rv = EIO; 1394 break; 1395 } 1396 1397 /* get the information from the PCI config header */ 1398 /* for the function 0. */ 1399 if (pci_config_setup(cdip, &handle) != DDI_SUCCESS) { 1400 rv = EIO; 1401 break; 1402 } 1403 card_info.prog_class = pci_config_get8(handle, 1404 PCI_CONF_PROGCLASS); 1405 card_info.base_class = pci_config_get8(handle, 1406 PCI_CONF_BASCLASS); 1407 card_info.sub_class = pci_config_get8(handle, 1408 PCI_CONF_SUBCLASS); 1409 card_info.header_type = pci_config_get8(handle, 1410 PCI_CONF_HEADER); 1411 pci_config_teardown(&handle); 1412 1413 /* copy the card info structure to the user space */ 1414 if (copyout((void *)&card_info, hpc_ctrldata.data, 1415 sizeof (hpc_card_info_t)) != 0) { 1416 rv = EFAULT; 1417 break; 1418 } 1419 1420 break; 1421 } 1422 1423 default: 1424 rv = EINVAL; 1425 break; 1426 } 1427 1428 mutex_exit(&slotinfop->slot_mutex); 1429 1430 break; 1431 1432 default: 1433 rv = ENOTTY; 1434 } 1435 1436 if (cmd != DEVCTL_AP_CONTROL) 1437 ndi_dc_freehdl(dcp); 1438 1439 (void) pcihp_get_soft_state(self, state_unlocking, &rval); 1440 1441 return (rv); 1442 } 1443 1444 /* 1445 * ************************************** 1446 * CONFIGURE the occupant in the slot. 1447 * ************************************** 1448 */ 1449 static int 1450 pcihp_configure_ap(pcihp_t *pcihp_p, int pci_dev) 1451 { 1452 dev_info_t *self = pcihp_p->dip; 1453 int rv = HPC_SUCCESS; 1454 struct pcihp_slotinfo *slotinfop; 1455 hpc_slot_state_t rstate; 1456 struct pcihp_config_ctrl ctrl; 1457 int circular_count; 1458 time_t time; 1459 1460 /* 1461 * check for valid request: 1462 * 1. It is a hotplug slot. 1463 * 2. The receptacle is in the CONNECTED state. 1464 */ 1465 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1466 1467 1468 1469 if ((pci_dev >= PCI_MAX_DEVS) || (slotinfop->slot_hdl == NULL) || 1470 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 1471 1472 return (ENXIO); 1473 } 1474 1475 /* 1476 * If the occupant is already in (partially?) configured 1477 * state then call the ndi_devi_online() on the device 1478 * subtree(s) for this attachment point. 1479 */ 1480 1481 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 1482 ctrl.flags = PCIHP_CFG_CONTINUE; 1483 ctrl.rv = NDI_SUCCESS; 1484 ctrl.dip = NULL; 1485 ctrl.pci_dev = pci_dev; 1486 ctrl.op = PCIHP_ONLINE; 1487 1488 ndi_devi_enter(self, &circular_count); 1489 ddi_walk_devs(ddi_get_child(self), pcihp_configure, 1490 (void *)&ctrl); 1491 ndi_devi_exit(self, circular_count); 1492 1493 if (ctrl.rv != NDI_SUCCESS) { 1494 /* 1495 * one or more of the devices are not 1496 * onlined. How is this to be reported? 1497 */ 1498 cmn_err(CE_WARN, 1499 "pcihp (%s%d): failed to attach one or" 1500 " more drivers for the card in the slot %s", 1501 ddi_driver_name(self), ddi_get_instance(self), 1502 slotinfop->name); 1503 /* rv = EFAULT; */ 1504 } 1505 /* tell HPC driver that the occupant is configured */ 1506 (void) hpc_nexus_control(slotinfop->slot_hdl, 1507 HPC_CTRL_DEV_CONFIGURED, NULL); 1508 1509 if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS) 1510 slotinfop->last_change = (time_t)-1; 1511 else 1512 slotinfop->last_change = (time32_t)time; 1513 1514 1515 return (rv); 1516 } 1517 1518 /* 1519 * Occupant is in the UNCONFIGURED state. 1520 */ 1521 1522 /* Check if the receptacle is in the CONNECTED state. */ 1523 if (hpc_nexus_control(slotinfop->slot_hdl, 1524 HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0) { 1525 1526 return (ENXIO); 1527 } 1528 1529 if (rstate == HPC_SLOT_EMPTY) { 1530 /* error. slot is empty */ 1531 1532 return (ENXIO); 1533 } 1534 1535 if (rstate != HPC_SLOT_CONNECTED) { 1536 /* error. either the slot is empty or connect failed */ 1537 1538 return (ENXIO); 1539 } 1540 1541 slotinfop->rstate = AP_RSTATE_CONNECTED; /* record rstate */ 1542 1543 /* Turn INS and LED off, and start configuration. */ 1544 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1545 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_CONFIGURE); 1546 if (pcihp_cpci_blue_led) 1547 pcihp_hs_csr_op(pcihp_p, pci_dev, 1548 HPC_EVENT_SLOT_BLUE_LED_OFF); 1549 slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_INS_PENDING; 1550 } 1551 1552 (void) hpc_nexus_control(slotinfop->slot_hdl, 1553 HPC_CTRL_DEV_CONFIG_START, NULL); 1554 1555 /* 1556 * Call the configurator to configure the card. 1557 */ 1558 if (pcicfg_configure(self, pci_dev, PCICFG_ALL_FUNC, 0) 1559 != PCICFG_SUCCESS) { 1560 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1561 if (pcihp_cpci_blue_led) 1562 pcihp_hs_csr_op(pcihp_p, pci_dev, 1563 HPC_EVENT_SLOT_BLUE_LED_ON); 1564 pcihp_hs_csr_op(pcihp_p, pci_dev, 1565 HPC_EVENT_SLOT_UNCONFIGURE); 1566 } 1567 /* tell HPC driver occupant configure Error */ 1568 (void) hpc_nexus_control(slotinfop->slot_hdl, 1569 HPC_CTRL_DEV_CONFIG_FAILURE, NULL); 1570 1571 return (EIO); 1572 } 1573 1574 /* record the occupant state as CONFIGURED */ 1575 slotinfop->ostate = AP_OSTATE_CONFIGURED; 1576 slotinfop->condition = AP_COND_OK; 1577 1578 /* now, online all the devices in the AP */ 1579 ctrl.flags = PCIHP_CFG_CONTINUE; 1580 ctrl.rv = NDI_SUCCESS; 1581 ctrl.dip = NULL; 1582 ctrl.pci_dev = pci_dev; 1583 ctrl.op = PCIHP_ONLINE; 1584 1585 ndi_devi_enter(self, &circular_count); 1586 ddi_walk_devs(ddi_get_child(self), pcihp_configure, (void *)&ctrl); 1587 ndi_devi_exit(self, circular_count); 1588 1589 if (ctrl.rv != NDI_SUCCESS) { 1590 /* 1591 * one or more of the devices are not 1592 * ONLINE'd. How is this to be 1593 * reported? 1594 */ 1595 cmn_err(CE_WARN, 1596 "pcihp (%s%d): failed to attach one or" 1597 " more drivers for the card in the slot %s", 1598 ddi_driver_name(pcihp_p->dip), 1599 ddi_get_instance(pcihp_p->dip), 1600 slotinfop->name); 1601 /* rv = EFAULT; */ 1602 } 1603 /* store HS_CSR location. No events, jut a read operation. */ 1604 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) 1605 pcihp_hs_csr_op(pcihp_p, pci_dev, -1); 1606 1607 /* tell HPC driver that the occupant is configured */ 1608 (void) hpc_nexus_control(slotinfop->slot_hdl, 1609 HPC_CTRL_DEV_CONFIGURED, NULL); 1610 1611 1612 return (rv); 1613 } 1614 1615 /* 1616 * ************************************** 1617 * UNCONFIGURE the occupant in the slot. 1618 * ************************************** 1619 */ 1620 static int 1621 pcihp_unconfigure_ap(pcihp_t *pcihp_p, int pci_dev) 1622 { 1623 dev_info_t *self = pcihp_p->dip; 1624 int rv = HPC_SUCCESS; 1625 struct pcihp_slotinfo *slotinfop; 1626 struct pcihp_config_ctrl ctrl; 1627 int circular_count; 1628 time_t time; 1629 1630 /* 1631 * check for valid request: 1632 * 1. It is a hotplug slot. 1633 * 2. The occupant is in the CONFIGURED state. 1634 */ 1635 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1636 1637 1638 1639 if ((pci_dev >= PCI_MAX_DEVS) || (slotinfop->slot_hdl == NULL) || 1640 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 1641 1642 return (ENXIO); 1643 } 1644 /* 1645 * The following may not need to be there, as we should 1646 * support unconfiguring of boards and free resources 1647 * even when the board is not hotswappable. But this is 1648 * the only way, we may be able to tell the system 1649 * administrator that it is not a hotswap board since 1650 * disconnect operation is never called. 1651 * This way we help the system administrator from not 1652 * accidentally removing a non hotswap board and 1653 * possibly destroying it. May be this behavior can 1654 * be a default, and can be enabled or disabled via 1655 * a global flag. 1656 */ 1657 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1658 if (slotinfop->slot_flags & PCIHP_SLOT_DEV_NON_HOTPLUG) { 1659 /* Operation unsupported if no HS board/slot */ 1660 return (ENOTSUP); 1661 } 1662 } 1663 1664 /* 1665 * If the occupant is in the CONFIGURED state then 1666 * call the configurator to unconfigure the slot. 1667 */ 1668 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 1669 1670 /* 1671 * since potential state change is imminent mask 1672 * enum events to prevent the slot from being re-configured 1673 */ 1674 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM); 1675 1676 /* 1677 * Detach all the drivers for the devices in the 1678 * slot. Call pcihp_configure() to do this. 1679 */ 1680 ctrl.flags = 0; 1681 ctrl.rv = NDI_SUCCESS; 1682 ctrl.dip = NULL; 1683 ctrl.pci_dev = pci_dev; 1684 ctrl.op = PCIHP_OFFLINE; 1685 1686 (void) devfs_clean(self, NULL, DV_CLEAN_FORCE); 1687 ndi_devi_enter(self, &circular_count); 1688 ddi_walk_devs(ddi_get_child(self), pcihp_configure, 1689 (void *)&ctrl); 1690 ndi_devi_exit(self, circular_count); 1691 1692 if (ctrl.rv != NDI_SUCCESS) { 1693 /* 1694 * Failed to detach one or more drivers 1695 * Restore the state of drivers which 1696 * are offlined during this operation. 1697 */ 1698 ctrl.flags = 0; 1699 ctrl.rv = NDI_SUCCESS; 1700 ctrl.dip = NULL; 1701 ctrl.pci_dev = pci_dev; 1702 ctrl.op = PCIHP_ONLINE; 1703 1704 ndi_devi_enter(self, &circular_count); 1705 ddi_walk_devs(ddi_get_child(self), 1706 pcihp_configure, (void *)&ctrl); 1707 ndi_devi_exit(self, circular_count); 1708 1709 /* tell HPC driver that the occupant is Busy */ 1710 (void) hpc_nexus_control(slotinfop->slot_hdl, 1711 HPC_CTRL_DEV_UNCONFIG_FAILURE, NULL); 1712 1713 rv = EBUSY; 1714 } else { 1715 (void) hpc_nexus_control(slotinfop->slot_hdl, 1716 HPC_CTRL_DEV_UNCONFIG_START, NULL); 1717 1718 if (pcicfg_unconfigure(self, pci_dev, 1719 PCICFG_ALL_FUNC, 0) == PCICFG_SUCCESS) { 1720 /* 1721 * Now that resources are freed, 1722 * clear EXT and Turn LED ON. 1723 */ 1724 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1725 pcihp_hs_csr_op(pcihp_p, pci_dev, 1726 HPC_EVENT_SLOT_UNCONFIGURE); 1727 if (pcihp_cpci_blue_led) 1728 pcihp_hs_csr_op(pcihp_p, 1729 pci_dev, 1730 HPC_EVENT_SLOT_BLUE_LED_ON); 1731 slotinfop->hs_csr_location = 0; 1732 slotinfop->slot_flags &= 1733 ~(PCIHP_SLOT_DEV_NON_HOTPLUG| 1734 PCIHP_SLOT_ENUM_EXT_PENDING); 1735 } 1736 slotinfop->ostate = AP_OSTATE_UNCONFIGURED; 1737 slotinfop->condition = AP_COND_UNKNOWN; 1738 /* 1739 * send the notification of state change 1740 * to the HPC driver. 1741 */ 1742 (void) hpc_nexus_control(slotinfop->slot_hdl, 1743 HPC_CTRL_DEV_UNCONFIGURED, 1744 NULL); 1745 } else { 1746 /* tell HPC driver occupant unconfigure Error */ 1747 (void) hpc_nexus_control(slotinfop->slot_hdl, 1748 HPC_CTRL_DEV_UNCONFIG_FAILURE, NULL); 1749 1750 rv = EIO; 1751 } 1752 } 1753 } 1754 1755 if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS) 1756 slotinfop->last_change = (time_t)-1; 1757 else 1758 slotinfop->last_change = (time32_t)time; 1759 1760 1761 1762 /* unmask enum events again */ 1763 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) { 1764 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM); 1765 } 1766 1767 return (rv); 1768 } 1769 1770 /* 1771 * Accessor function to return pointer to the pci hotplug 1772 * cb_ops structure. 1773 */ 1774 struct cb_ops * 1775 pcihp_get_cb_ops() 1776 { 1777 return (&pcihp_cb_ops); 1778 } 1779 1780 /* 1781 * Setup function to initialize hot plug feature. Returns DDI_SUCCESS 1782 * for successful initialization, otherwise it returns DDI_FAILURE. 1783 * 1784 * It is assumed that this this function is called from the attach() 1785 * entry point of the PCI nexus driver. 1786 */ 1787 1788 int 1789 pcihp_init(dev_info_t *dip) 1790 { 1791 pcihp_t *pcihp_p; 1792 int i; 1793 caddr_t enum_data; 1794 int enum_size; 1795 int rv; 1796 1797 mutex_enter(&pcihp_open_mutex); 1798 1799 /* 1800 * Make sure that it is not already initialized. 1801 */ 1802 if (pcihp_get_soft_state(dip, PCIHP_DR_NOOP, &rv) != NULL) { 1803 cmn_err(CE_WARN, "%s%d: pcihp instance already initialized!", 1804 ddi_driver_name(dip), ddi_get_instance(dip)); 1805 goto cleanup; 1806 } 1807 1808 /* 1809 * Initialize soft state structure for the bus instance. 1810 */ 1811 if ((pcihp_p = pcihp_create_soft_state(dip)) == NULL) { 1812 cmn_err(CE_WARN, "%s%d: can't allocate pcihp structure", 1813 ddi_driver_name(dip), ddi_get_instance(dip)); 1814 goto cleanup; 1815 } 1816 1817 pcihp_p->soft_state = PCIHP_SOFT_STATE_CLOSED; 1818 /* XXX if bus is running at 66Mhz then set PCI_BUS_66MHZ bit */ 1819 pcihp_p->bus_flags = 0; /* XXX FIX IT */ 1820 1821 /* 1822 * If a platform wishes to implement Radial ENUM# routing 1823 * a property "enum-impl" must be presented to us with a 1824 * string value "radial". 1825 * This helps us not go for polling operation (default) 1826 * during a ENUM# event. 1827 */ 1828 if (ddi_getlongprop(DDI_DEV_T_ANY, dip, 0, "enum-impl", 1829 (caddr_t)&enum_data, &enum_size) == DDI_PROP_SUCCESS) { 1830 if (strcmp(enum_data, "radial") == 0) { 1831 pcihp_p->bus_flags |= PCIHP_BUS_ENUM_RADIAL; 1832 } 1833 kmem_free(enum_data, enum_size); 1834 } 1835 1836 for (i = 0; i < PCI_MAX_DEVS; i++) { 1837 /* initialize slot mutex */ 1838 mutex_init(&pcihp_p->slotinfo[i].slot_mutex, NULL, 1839 MUTEX_DRIVER, NULL); 1840 } 1841 1842 /* 1843 * register the bus instance with the HPS framework. 1844 */ 1845 if (hpc_nexus_register_bus(dip, pcihp_new_slot_state, 0) != 0) { 1846 cmn_err(CE_WARN, "%s%d: failed to register the bus with HPS", 1847 ddi_driver_name(dip), ddi_get_instance(dip)); 1848 goto cleanup1; 1849 } 1850 1851 /* 1852 * Create the "devctl" minor for hot plug support. The minor 1853 * number for "devctl" node is in the same format as the AP 1854 * minor nodes. 1855 */ 1856 if (ddi_create_minor_node(dip, "devctl", S_IFCHR, 1857 PCIHP_AP_MINOR_NUM(ddi_get_instance(dip), PCIHP_DEVCTL_MINOR), 1858 DDI_NT_NEXUS, 0) != DDI_SUCCESS) 1859 goto cleanup2; 1860 1861 /* 1862 * Setup resource maps for this bus node. (Note: This can 1863 * be done from the attach(9E) of the nexus itself.) 1864 */ 1865 (void) pci_resource_setup(dip); 1866 1867 pcihp_p->bus_state = PCIHP_BUS_CONFIGURED; 1868 1869 mutex_exit(&pcihp_open_mutex); 1870 1871 return (DDI_SUCCESS); 1872 1873 cleanup2: 1874 (void) hpc_nexus_unregister_bus(dip); 1875 cleanup1: 1876 for (i = 0; i < PCI_MAX_DEVS; i++) 1877 mutex_destroy(&pcihp_p->slotinfo[i].slot_mutex); 1878 pcihp_destroy_soft_state(dip); 1879 cleanup: 1880 mutex_exit(&pcihp_open_mutex); 1881 return (DDI_FAILURE); 1882 } 1883 1884 /* 1885 * pcihp_uninit() 1886 * 1887 * The bus instance is going away, cleanup any data associated with 1888 * the management of hot plug slots. It is assumed that this function 1889 * is called from detach() routine of the PCI nexus driver. Also, 1890 * it is assumed that no devices on the bus are in the configured state. 1891 */ 1892 int 1893 pcihp_uninit(dev_info_t *dip) 1894 { 1895 pcihp_t *pcihp_p; 1896 int i, j; 1897 int rv; 1898 1899 mutex_enter(&pcihp_open_mutex); 1900 /* get a pointer to the soft state structure */ 1901 pcihp_p = pcihp_get_soft_state(dip, PCIHP_DR_BUS_UNCONFIGURE, &rv); 1902 ASSERT(pcihp_p != NULL); 1903 1904 /* slot mutexes should prevent any configure/unconfigure access */ 1905 for (i = 0; i < PCI_MAX_DEVS; i++) { 1906 if (!mutex_tryenter(&pcihp_p->slotinfo[i].slot_mutex)) { 1907 for (j = 0; j < i; j++) { 1908 mutex_exit(&pcihp_p->slotinfo[j].slot_mutex); 1909 } 1910 mutex_exit(&pcihp_open_mutex); 1911 return (DDI_FAILURE); 1912 } 1913 } 1914 1915 if ((pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED) || 1916 (rv == PCIHP_FAILURE)) { 1917 cmn_err(CE_WARN, "%s%d: pcihp instance is busy", 1918 ddi_driver_name(dip), ddi_get_instance(dip)); 1919 for (i = 0; i < PCI_MAX_DEVS; i++) { 1920 mutex_exit(&pcihp_p->slotinfo[i].slot_mutex); 1921 } 1922 mutex_exit(&pcihp_open_mutex); 1923 return (DDI_FAILURE); 1924 } 1925 1926 /* 1927 * Unregister the bus with the HPS. 1928 * 1929 * (Note: It is assumed that the HPS framework uninstalls 1930 * event handlers for all the hot plug slots on this bus.) 1931 */ 1932 (void) hpc_nexus_unregister_bus(dip); 1933 1934 /* Free up any kmem_alloc'd memory for slot info table. */ 1935 for (i = 0; i < PCI_MAX_DEVS; i++) { 1936 /* free up slot name strings */ 1937 if (pcihp_p->slotinfo[i].name != NULL) 1938 kmem_free(pcihp_p->slotinfo[i].name, 1939 strlen(pcihp_p->slotinfo[i].name) + 1); 1940 } 1941 1942 /* destroy slot mutexes */ 1943 for (i = 0; i < PCI_MAX_DEVS; i++) 1944 mutex_destroy(&pcihp_p->slotinfo[i].slot_mutex); 1945 1946 ddi_remove_minor_node(dip, NULL); 1947 1948 /* free up the soft state structure */ 1949 pcihp_destroy_soft_state(dip); 1950 1951 /* 1952 * Destroy resource maps for this bus node. (Note: This can 1953 * be done from the detach(9E) of the nexus itself.) 1954 */ 1955 (void) pci_resource_destroy(dip); 1956 1957 mutex_exit(&pcihp_open_mutex); 1958 1959 return (DDI_SUCCESS); 1960 } 1961 1962 /* 1963 * pcihp_new_slot_state() 1964 * 1965 * This function is called by the HPS when it finds a hot plug 1966 * slot is added or being removed from the hot plug framework. 1967 * It returns 0 for success and HPC_ERR_FAILED for errors. 1968 */ 1969 static int 1970 pcihp_new_slot_state(dev_info_t *dip, hpc_slot_t hdl, 1971 hpc_slot_info_t *slot_info, int slot_state) 1972 { 1973 pcihp_t *pcihp_p; 1974 struct pcihp_slotinfo *slotinfop; 1975 int pci_dev; 1976 minor_t ap_minor; 1977 major_t ap_major; 1978 int rv = 0; 1979 time_t time; 1980 int auto_enable = 1; 1981 int rval; 1982 1983 /* get a pointer to the soft state structure */ 1984 pcihp_p = pcihp_get_soft_state(dip, PCIHP_DR_SLOT_ENTER, &rval); 1985 ASSERT(pcihp_p != NULL); 1986 1987 if (rval == PCIHP_FAILURE) { 1988 PCIHP_DEBUG((CE_WARN, "pcihp instance is unconfigured" 1989 " while slot activity is requested\n")); 1990 return (HPC_ERR_FAILED); 1991 } 1992 1993 pci_dev = slot_info->pci_dev_num; 1994 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1995 1996 mutex_enter(&slotinfop->slot_mutex); 1997 1998 switch (slot_state) { 1999 2000 case HPC_SLOT_ONLINE: 2001 2002 /* 2003 * Make sure the slot is not already ONLINE (paranoia?). 2004 * (Note: Should this be simply an ASSERTION?) 2005 */ 2006 if (slotinfop->slot_hdl != NULL) { 2007 PCIHP_DEBUG((CE_WARN, 2008 "pcihp (%s%d): pci slot (dev %x) already ONLINE!!", 2009 ddi_driver_name(dip), ddi_get_instance(dip), 2010 pci_dev)); 2011 rv = HPC_ERR_FAILED; 2012 break; 2013 } 2014 2015 /* 2016 * Add the hot plug slot to the bus. 2017 */ 2018 2019 /* create the AP minor node */ 2020 ap_minor = PCIHP_AP_MINOR_NUM(ddi_get_instance(dip), pci_dev); 2021 if (ddi_create_minor_node(dip, slot_info->pci_slot_name, 2022 S_IFCHR, ap_minor, 2023 DDI_NT_PCI_ATTACHMENT_POINT, 0) == DDI_FAILURE) { 2024 cmn_err(CE_WARN, 2025 "pcihp (%s%d): ddi_create_minor_node failed" 2026 " for pci dev %x", ddi_driver_name(dip), 2027 ddi_get_instance(dip), pci_dev); 2028 rv = HPC_ERR_FAILED; 2029 break; 2030 } 2031 2032 /* save the slot handle */ 2033 slotinfop->slot_hdl = hdl; 2034 2035 /* setup event handler for all hardware events on the slot */ 2036 ap_major = ddi_driver_major(dip); 2037 if (hpc_install_event_handler(hdl, -1, pcihp_event_handler, 2038 (caddr_t)makedevice(ap_major, ap_minor)) != 0) { 2039 cmn_err(CE_WARN, 2040 "pcihp (%s%d): install event handler failed" 2041 " for pci dev %x", ddi_driver_name(dip), 2042 ddi_get_instance(dip), pci_dev); 2043 rv = HPC_ERR_FAILED; 2044 break; 2045 } 2046 slotinfop->event_mask = (uint32_t)0xFFFFFFFF; 2047 2048 pcihp_create_occupant_props(dip, makedevice(ap_major, 2049 ap_minor), pci_dev); 2050 2051 /* set default auto configuration enabled flag for this slot */ 2052 slotinfop->slot_flags = pcihp_autocfg_enabled; 2053 2054 /* copy the slot information */ 2055 slotinfop->name = 2056 kmem_alloc(strlen(slot_info->pci_slot_name) + 1, KM_SLEEP); 2057 (void) strcpy(slotinfop->name, slot_info->pci_slot_name); 2058 slotinfop->slot_type = slot_info->slot_type; 2059 slotinfop->hs_csr_location = 0; 2060 slotinfop->slot_capabilities = slot_info->pci_slot_capabilities; 2061 if (slot_info->slot_flags & HPC_SLOT_NO_AUTO_ENABLE) 2062 auto_enable = 0; 2063 2064 if (slot_info->slot_flags & HPC_SLOT_CREATE_DEVLINK) { 2065 pci_devlink_flags |= (1 << pci_dev); 2066 (void) ddi_prop_update_int(DDI_DEV_T_NONE, 2067 dip, "ap-names", pci_devlink_flags); 2068 } 2069 2070 PCIHP_DEBUG((CE_NOTE, 2071 "pcihp (%s%d): pci slot (dev %x) ONLINE\n", 2072 ddi_driver_name(dip), ddi_get_instance(dip), pci_dev)); 2073 2074 /* 2075 * The slot may have an occupant that was configured 2076 * at boot time. If we find a devinfo node in the tree 2077 * for this slot (i.e pci device number) then we 2078 * record the occupant state as CONFIGURED. 2079 */ 2080 if (pcihp_devi_find(dip, pci_dev, 0) != NULL) { 2081 /* we have a configured occupant */ 2082 slotinfop->ostate = AP_OSTATE_CONFIGURED; 2083 slotinfop->rstate = AP_RSTATE_CONNECTED; 2084 slotinfop->condition = AP_COND_OK; 2085 2086 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2087 /* this will set slot flags too. */ 2088 (void) pcihp_get_board_type(slotinfop); 2089 pcihp_hs_csr_op(pcihp_p, pci_dev, 2090 HPC_EVENT_SLOT_CONFIGURE); 2091 if (pcihp_cpci_blue_led) 2092 pcihp_hs_csr_op(pcihp_p, pci_dev, 2093 HPC_EVENT_SLOT_BLUE_LED_OFF); 2094 /* ENUM# enabled by default for cPCI devices */ 2095 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 2096 slotinfop->slot_flags &= 2097 ~PCIHP_SLOT_ENUM_INS_PENDING; 2098 } 2099 2100 /* tell HPC driver that the occupant is configured */ 2101 (void) hpc_nexus_control(slotinfop->slot_hdl, 2102 HPC_CTRL_DEV_CONFIGURED, NULL); 2103 2104 /* 2105 * Tell sysevent listeners that slot has 2106 * changed state. At minimum, this is useful 2107 * when a PCI-E Chassis (containing Occupants) is 2108 * hotplugged. In this case, the following will 2109 * announce that the Occupant in the Receptacle 2110 * in the Chassis had a state-change. 2111 */ 2112 pcihp_gen_sysevent(slotinfop->name, 2113 PCIHP_DR_AP_STATE_CHANGE, SE_NO_HINT, 2114 pcihp_p->dip, KM_SLEEP); 2115 } else { 2116 struct pcihp_config_ctrl ctrl; 2117 int circular_count; 2118 2119 slotinfop->ostate = AP_OSTATE_UNCONFIGURED; 2120 slotinfop->rstate = AP_RSTATE_EMPTY; 2121 slotinfop->condition = AP_COND_UNKNOWN; 2122 2123 if (!auto_enable) { /* no further action */ 2124 break; 2125 } 2126 2127 /* 2128 * We enable power to the slot and try to 2129 * configure if there is any card present. 2130 * 2131 * Note: This case is possible if the BIOS or 2132 * firmware doesn't enable the slots during 2133 * soft reboot. 2134 */ 2135 if (hpc_nexus_connect(slotinfop->slot_hdl, 2136 NULL, 0) != HPC_SUCCESS) 2137 break; 2138 2139 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2140 pcihp_hs_csr_op(pcihp_p, pci_dev, 2141 HPC_EVENT_SLOT_CONFIGURE); 2142 if (pcihp_cpci_blue_led) 2143 pcihp_hs_csr_op(pcihp_p, pci_dev, 2144 HPC_EVENT_SLOT_BLUE_LED_OFF); 2145 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 2146 slotinfop->slot_flags &= 2147 ~PCIHP_SLOT_ENUM_INS_PENDING; 2148 } 2149 2150 (void) hpc_nexus_control(slotinfop->slot_hdl, 2151 HPC_CTRL_DEV_CONFIG_START, NULL); 2152 2153 /* 2154 * Call the configurator to configure the card. 2155 */ 2156 if (pcicfg_configure(dip, pci_dev, PCICFG_ALL_FUNC, 0) 2157 != PCICFG_SUCCESS) { 2158 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2159 if (pcihp_cpci_blue_led) 2160 pcihp_hs_csr_op(pcihp_p, 2161 pci_dev, 2162 HPC_EVENT_SLOT_BLUE_LED_ON); 2163 pcihp_hs_csr_op(pcihp_p, pci_dev, 2164 HPC_EVENT_SLOT_UNCONFIGURE); 2165 } 2166 2167 /* tell HPC driver occupant configure Error */ 2168 (void) hpc_nexus_control(slotinfop->slot_hdl, 2169 HPC_CTRL_DEV_CONFIG_FAILURE, NULL); 2170 2171 /* 2172 * call HPC driver to turn off the power for 2173 * the slot. 2174 */ 2175 (void) hpc_nexus_disconnect(slotinfop->slot_hdl, 2176 NULL, 0); 2177 } else { 2178 /* record the occupant state as CONFIGURED */ 2179 slotinfop->ostate = AP_OSTATE_CONFIGURED; 2180 slotinfop->rstate = AP_RSTATE_CONNECTED; 2181 slotinfop->condition = AP_COND_OK; 2182 2183 /* now, online all the devices in the AP */ 2184 ctrl.flags = PCIHP_CFG_CONTINUE; 2185 ctrl.rv = NDI_SUCCESS; 2186 ctrl.dip = NULL; 2187 ctrl.pci_dev = pci_dev; 2188 ctrl.op = PCIHP_ONLINE; 2189 /* 2190 * the following sets slot_flags and 2191 * hs_csr_location too. 2192 */ 2193 (void) pcihp_get_board_type(slotinfop); 2194 2195 ndi_devi_enter(dip, &circular_count); 2196 ddi_walk_devs(ddi_get_child(dip), 2197 pcihp_configure, (void *)&ctrl); 2198 ndi_devi_exit(dip, circular_count); 2199 2200 if (ctrl.rv != NDI_SUCCESS) { 2201 /* 2202 * one or more of the devices are not 2203 * ONLINE'd. How is this to be 2204 * reported? 2205 */ 2206 cmn_err(CE_WARN, 2207 "pcihp (%s%d): failed to attach" 2208 " one or more drivers for the" 2209 " card in the slot %s", 2210 ddi_driver_name(dip), 2211 ddi_get_instance(dip), 2212 slotinfop->name); 2213 } 2214 2215 /* tell HPC driver the Occupant is Configured */ 2216 (void) hpc_nexus_control(slotinfop->slot_hdl, 2217 HPC_CTRL_DEV_CONFIGURED, NULL); 2218 2219 /* 2220 * Tell sysevent listeners that slot has 2221 * changed state. At minimum, this is useful 2222 * when a PCI-E Chassis (containing Occupants) 2223 * is hotplugged. In this case, the following 2224 * will announce that the Occupant in the 2225 * Receptacle in the Chassis had a state-change. 2226 */ 2227 pcihp_gen_sysevent(slotinfop->name, 2228 PCIHP_DR_AP_STATE_CHANGE, SE_NO_HINT, 2229 pcihp_p->dip, KM_SLEEP); 2230 } 2231 } 2232 2233 break; 2234 2235 case HPC_SLOT_OFFLINE: 2236 /* 2237 * A hot plug slot is being removed from the bus. 2238 * Make sure there is no occupant configured on the 2239 * slot before removing the AP minor node. 2240 */ 2241 if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) { 2242 cmn_err(CE_WARN, "pcihp (%s%d): Card is still in " 2243 "configured state for pci dev %x", 2244 ddi_driver_name(dip), ddi_get_instance(dip), 2245 pci_dev); 2246 rv = HPC_ERR_FAILED; 2247 break; 2248 } 2249 2250 /* 2251 * If the AP device is in open state then return 2252 * error. 2253 */ 2254 if (pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED) { 2255 rv = HPC_ERR_FAILED; 2256 break; 2257 } 2258 if (slot_info->slot_flags & HPC_SLOT_CREATE_DEVLINK) { 2259 pci_devlink_flags &= ~(1 << pci_dev); 2260 (void) ddi_prop_update_int(DDI_DEV_T_NONE, dip, 2261 "ap-names", pci_devlink_flags); 2262 } 2263 2264 /* remove the minor node */ 2265 ddi_remove_minor_node(dip, slotinfop->name); 2266 2267 /* free up the memory for the name string */ 2268 kmem_free(slotinfop->name, strlen(slotinfop->name) + 1); 2269 2270 /* update the slot info data */ 2271 slotinfop->name = NULL; 2272 slotinfop->slot_hdl = NULL; 2273 2274 PCIHP_DEBUG((CE_NOTE, 2275 "pcihp (%s%d): pci slot (dev %x) OFFLINE\n", 2276 ddi_driver_name(dip), ddi_get_instance(dip), 2277 slot_info->pci_dev_num)); 2278 2279 break; 2280 default: 2281 cmn_err(CE_WARN, 2282 "pcihp_new_slot_state: unknown slot_state %d", slot_state); 2283 rv = HPC_ERR_FAILED; 2284 } 2285 2286 if (rv == 0) { 2287 if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS) 2288 slotinfop->last_change = (time_t)-1; 2289 else 2290 slotinfop->last_change = (time32_t)time; 2291 } 2292 2293 mutex_exit(&slotinfop->slot_mutex); 2294 2295 (void) pcihp_get_soft_state(dip, PCIHP_DR_SLOT_EXIT, &rval); 2296 2297 return (rv); 2298 } 2299 2300 /* 2301 * Event handler. It is assumed that this function is called from 2302 * a kernel context only. 2303 * 2304 * Parameters: 2305 * slot_arg AP minor number. 2306 * event_mask Event that occurred. 2307 */ 2308 2309 static int 2310 pcihp_event_handler(caddr_t slot_arg, uint_t event_mask) 2311 { 2312 dev_t ap_dev = (dev_t)slot_arg; 2313 dev_info_t *self; 2314 pcihp_t *pcihp_p; 2315 int pci_dev; 2316 int rv = HPC_EVENT_CLAIMED; 2317 struct pcihp_slotinfo *slotinfop; 2318 struct pcihp_config_ctrl ctrl; 2319 int circular_count; 2320 int rval; 2321 int hint; 2322 hpc_slot_state_t rstate; 2323 struct hpc_led_info led_info; 2324 2325 /* 2326 * Get the soft state structure. 2327 */ 2328 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)ap_dev, 2329 (void **)&self) != DDI_SUCCESS) 2330 return (ENXIO); 2331 2332 pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_SLOT_ENTER, &rval); 2333 ASSERT(pcihp_p != NULL); 2334 2335 if (rval == PCIHP_FAILURE) { 2336 PCIHP_DEBUG((CE_WARN, "pcihp instance is unconfigured" 2337 " while slot activity is requested\n")); 2338 return (-1); 2339 } 2340 2341 /* get the PCI device number for the slot */ 2342 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(ap_dev)); 2343 2344 slotinfop = &pcihp_p->slotinfo[pci_dev]; 2345 2346 /* 2347 * All the events that may be handled in interrupt context should be 2348 * free of any mutex usage. 2349 */ 2350 switch (event_mask) { 2351 2352 case HPC_EVENT_CLEAR_ENUM: 2353 /* 2354 * Check and clear ENUM# interrupt status. This may be 2355 * called by the Hotswap controller driver when it is 2356 * operating in a full hotswap system where the 2357 * platform may not have control on globally disabling ENUM#. 2358 * In such cases, the intent is to clear interrupt and 2359 * process the interrupt in non-interrupt context. 2360 * This is the first part of the ENUM# event processing. 2361 */ 2362 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): ENUM# is generated" 2363 " on the bus (for slot %s ?)", 2364 ddi_driver_name(pcihp_p->dip), 2365 ddi_get_instance(pcihp_p->dip), slotinfop->name)); 2366 2367 /* this is the only event coming through in interrupt context */ 2368 rv = pcihp_handle_enum(pcihp_p, pci_dev, PCIHP_CLEAR_ENUM, 2369 KM_NOSLEEP); 2370 2371 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, &rval); 2372 2373 return (rv); 2374 default: 2375 break; 2376 } 2377 2378 mutex_enter(&slotinfop->slot_mutex); 2379 2380 if (hpc_nexus_control(slotinfop->slot_hdl, 2381 HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0) 2382 rv = HPC_ERR_FAILED; 2383 2384 slotinfop->rstate = (ap_rstate_t)rstate; 2385 2386 switch (event_mask) { 2387 2388 case HPC_EVENT_SLOT_INSERTION: 2389 /* 2390 * A card is inserted in the slot. Just report this 2391 * event and return. 2392 */ 2393 cmn_err(CE_NOTE, "pcihp (%s%d): card is inserted" 2394 " in the slot %s (pci dev %x)", 2395 ddi_driver_name(pcihp_p->dip), 2396 ddi_get_instance(pcihp_p->dip), 2397 slotinfop->name, pci_dev); 2398 2399 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2400 2401 break; 2402 2403 case HPC_EVENT_SLOT_CONFIGURE: 2404 /* 2405 * Configure the occupant that is just inserted in the slot. 2406 * The receptacle may or may not be in the connected state. If 2407 * the receptacle is not connected and the auto configuration 2408 * is enabled on this slot then connect the slot. If auto 2409 * configuration is enabled then configure the card. 2410 */ 2411 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) { 2412 /* 2413 * auto configuration is disabled. Tell someone 2414 * like RCM about this hotplug event? 2415 */ 2416 cmn_err(CE_NOTE, "pcihp (%s%d): SLOT_CONFIGURE event" 2417 " occurred for pci dev %x (slot %s)," 2418 " Slot disabled for auto-configuration.", 2419 ddi_driver_name(pcihp_p->dip), 2420 ddi_get_instance(pcihp_p->dip), pci_dev, 2421 slotinfop->name); 2422 2423 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2424 2425 break; 2426 } 2427 2428 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 2429 cmn_err(CE_WARN, "pcihp (%s%d): SLOT_CONFIGURE event" 2430 " re-occurred for pci dev %x (slot %s),", 2431 ddi_driver_name(pcihp_p->dip), 2432 ddi_get_instance(pcihp_p->dip), pci_dev, 2433 slotinfop->name); 2434 mutex_exit(&slotinfop->slot_mutex); 2435 2436 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, 2437 &rval); 2438 2439 return (EAGAIN); 2440 } 2441 2442 /* 2443 * Auto configuration is enabled. First, make sure the 2444 * receptacle is in the CONNECTED state. 2445 */ 2446 if ((rv = hpc_nexus_connect(slotinfop->slot_hdl, 2447 NULL, 0)) == HPC_SUCCESS) { 2448 /* record rstate */ 2449 slotinfop->rstate = AP_RSTATE_CONNECTED; 2450 } 2451 2452 /* Clear INS and Turn LED Off and start configuring. */ 2453 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2454 pcihp_hs_csr_op(pcihp_p, pci_dev, 2455 HPC_EVENT_SLOT_CONFIGURE); 2456 if (pcihp_cpci_blue_led) 2457 pcihp_hs_csr_op(pcihp_p, pci_dev, 2458 HPC_EVENT_SLOT_BLUE_LED_OFF); 2459 } 2460 2461 (void) hpc_nexus_control(slotinfop->slot_hdl, 2462 HPC_CTRL_DEV_CONFIG_START, NULL); 2463 2464 /* 2465 * Call the configurator to configure the card. 2466 */ 2467 if (pcicfg_configure(pcihp_p->dip, pci_dev, PCICFG_ALL_FUNC, 0) 2468 != PCICFG_SUCCESS) { 2469 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2470 if (pcihp_cpci_blue_led) 2471 pcihp_hs_csr_op(pcihp_p, pci_dev, 2472 HPC_EVENT_SLOT_BLUE_LED_ON); 2473 pcihp_hs_csr_op(pcihp_p, pci_dev, 2474 HPC_EVENT_SLOT_UNCONFIGURE); 2475 } 2476 /* failed to configure the card */ 2477 cmn_err(CE_WARN, "pcihp (%s%d): failed to configure" 2478 " the card in the slot %s", 2479 ddi_driver_name(pcihp_p->dip), 2480 ddi_get_instance(pcihp_p->dip), 2481 slotinfop->name); 2482 /* failed to configure; disconnect the slot */ 2483 if (hpc_nexus_disconnect(slotinfop->slot_hdl, 2484 NULL, 0) == HPC_SUCCESS) { 2485 slotinfop->rstate = AP_RSTATE_DISCONNECTED; 2486 } 2487 2488 /* tell HPC driver occupant configure Error */ 2489 (void) hpc_nexus_control(slotinfop->slot_hdl, 2490 HPC_CTRL_DEV_CONFIG_FAILURE, NULL); 2491 } else { 2492 /* record the occupant state as CONFIGURED */ 2493 slotinfop->ostate = AP_OSTATE_CONFIGURED; 2494 slotinfop->condition = AP_COND_OK; 2495 2496 /* now, online all the devices in the AP */ 2497 ctrl.flags = PCIHP_CFG_CONTINUE; 2498 ctrl.rv = NDI_SUCCESS; 2499 ctrl.dip = NULL; 2500 ctrl.pci_dev = pci_dev; 2501 ctrl.op = PCIHP_ONLINE; 2502 (void) pcihp_get_board_type(slotinfop); 2503 2504 ndi_devi_enter(pcihp_p->dip, &circular_count); 2505 ddi_walk_devs(ddi_get_child(pcihp_p->dip), 2506 pcihp_configure, (void *)&ctrl); 2507 ndi_devi_exit(pcihp_p->dip, circular_count); 2508 2509 if (ctrl.rv != NDI_SUCCESS) { 2510 /* 2511 * one or more of the devices are not 2512 * ONLINE'd. How is this to be 2513 * reported? 2514 */ 2515 cmn_err(CE_WARN, 2516 "pcihp (%s%d): failed to attach one or" 2517 " more drivers for the card in" 2518 " the slot %s", 2519 ddi_driver_name(pcihp_p->dip), 2520 ddi_get_instance(pcihp_p->dip), 2521 slotinfop->name); 2522 } 2523 2524 /* tell HPC driver that the occupant is configured */ 2525 (void) hpc_nexus_control(slotinfop->slot_hdl, 2526 HPC_CTRL_DEV_CONFIGURED, NULL); 2527 2528 cmn_err(CE_NOTE, "pcihp (%s%d): card is CONFIGURED" 2529 " in the slot %s (pci dev %x)", 2530 ddi_driver_name(pcihp_p->dip), 2531 ddi_get_instance(pcihp_p->dip), 2532 slotinfop->name, pci_dev); 2533 } 2534 2535 break; 2536 2537 case HPC_EVENT_SLOT_UNCONFIGURE: 2538 /* 2539 * Unconfigure the occupant in this slot. 2540 */ 2541 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) { 2542 /* 2543 * auto configuration is disabled. Tell someone 2544 * like RCM about this hotplug event? 2545 */ 2546 cmn_err(CE_NOTE, "pcihp (%s%d): SLOT_UNCONFIGURE event" 2547 " for pci dev %x (slot %s) ignored," 2548 " Slot disabled for auto-configuration.", 2549 ddi_driver_name(pcihp_p->dip), 2550 ddi_get_instance(pcihp_p->dip), pci_dev, 2551 slotinfop->name); 2552 2553 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2554 2555 break; 2556 } 2557 2558 if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED) { 2559 cmn_err(CE_WARN, "pcihp (%s%d): SLOT_UNCONFIGURE " 2560 "event re-occurred for pci dev %x (slot %s),", 2561 ddi_driver_name(pcihp_p->dip), 2562 ddi_get_instance(pcihp_p->dip), pci_dev, 2563 slotinfop->name); 2564 mutex_exit(&slotinfop->slot_mutex); 2565 2566 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, 2567 &rval); 2568 2569 return (EAGAIN); 2570 } 2571 /* 2572 * If the occupant is in the CONFIGURED state then 2573 * call the configurator to unconfigure the slot. 2574 */ 2575 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 2576 /* 2577 * Detach all the drivers for the devices in the 2578 * slot. Call pcihp_configure() to offline the 2579 * devices. 2580 */ 2581 ctrl.flags = 0; 2582 ctrl.rv = NDI_SUCCESS; 2583 ctrl.dip = NULL; 2584 ctrl.pci_dev = pci_dev; 2585 ctrl.op = PCIHP_OFFLINE; 2586 2587 (void) devfs_clean(pcihp_p->dip, NULL, DV_CLEAN_FORCE); 2588 ndi_devi_enter(pcihp_p->dip, &circular_count); 2589 ddi_walk_devs(ddi_get_child(pcihp_p->dip), 2590 pcihp_configure, (void *)&ctrl); 2591 ndi_devi_exit(pcihp_p->dip, circular_count); 2592 2593 if (ctrl.rv != NDI_SUCCESS) { 2594 /* 2595 * Failed to detach one or more drivers. 2596 * Restore the status for the drivers 2597 * which are offlined during this step. 2598 */ 2599 ctrl.flags = PCIHP_CFG_CONTINUE; 2600 ctrl.rv = NDI_SUCCESS; 2601 ctrl.dip = NULL; 2602 ctrl.pci_dev = pci_dev; 2603 ctrl.op = PCIHP_ONLINE; 2604 2605 ndi_devi_enter(pcihp_p->dip, &circular_count); 2606 ddi_walk_devs(ddi_get_child(pcihp_p->dip), 2607 pcihp_configure, (void *)&ctrl); 2608 ndi_devi_exit(pcihp_p->dip, circular_count); 2609 rv = HPC_ERR_FAILED; 2610 } else { 2611 (void) hpc_nexus_control(slotinfop->slot_hdl, 2612 HPC_CTRL_DEV_UNCONFIG_START, NULL); 2613 2614 if (pcicfg_unconfigure(pcihp_p->dip, pci_dev, 2615 PCICFG_ALL_FUNC, 0) == PCICFG_SUCCESS) { 2616 2617 /* Resources freed. Turn LED on. Clear EXT. */ 2618 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2619 if (pcihp_cpci_blue_led) 2620 pcihp_hs_csr_op(pcihp_p, 2621 pci_dev, 2622 HPC_EVENT_SLOT_BLUE_LED_ON); 2623 pcihp_hs_csr_op(pcihp_p, pci_dev, 2624 HPC_EVENT_SLOT_UNCONFIGURE); 2625 slotinfop->hs_csr_location = 0; 2626 slotinfop->slot_flags &= 2627 ~PCIHP_SLOT_DEV_NON_HOTPLUG; 2628 } 2629 slotinfop->ostate = 2630 AP_OSTATE_UNCONFIGURED; 2631 slotinfop->condition = AP_COND_UNKNOWN; 2632 /* 2633 * send the notification of state change 2634 * to the HPC driver. 2635 */ 2636 (void) hpc_nexus_control( 2637 slotinfop->slot_hdl, 2638 HPC_CTRL_DEV_UNCONFIGURED, NULL); 2639 /* disconnect the slot */ 2640 if (hpc_nexus_disconnect( 2641 slotinfop->slot_hdl, 2642 NULL, 0) == HPC_SUCCESS) { 2643 slotinfop->rstate = 2644 AP_RSTATE_DISCONNECTED; 2645 } 2646 2647 cmn_err(CE_NOTE, 2648 "pcihp (%s%d): card is UNCONFIGURED" 2649 " in the slot %s (pci dev %x)", 2650 ddi_driver_name(pcihp_p->dip), 2651 ddi_get_instance(pcihp_p->dip), 2652 slotinfop->name, pci_dev); 2653 } else { 2654 /* tell HPC driver occupant is Busy */ 2655 (void) hpc_nexus_control( 2656 slotinfop->slot_hdl, 2657 HPC_CTRL_DEV_UNCONFIG_FAILURE, 2658 NULL); 2659 2660 rv = HPC_ERR_FAILED; 2661 } 2662 } 2663 } 2664 2665 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2666 2667 break; 2668 2669 case HPC_EVENT_SLOT_REMOVAL: 2670 /* 2671 * Card is removed from the slot. The card must have been 2672 * unconfigured before this event. 2673 */ 2674 if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) { 2675 slotinfop->condition = AP_COND_FAILED; 2676 cmn_err(CE_WARN, "pcihp (%s%d): card is removed" 2677 " from the slot %s", 2678 ddi_driver_name(pcihp_p->dip), 2679 ddi_get_instance(pcihp_p->dip), 2680 slotinfop->name); 2681 } else { 2682 slotinfop->condition = AP_COND_UNKNOWN; 2683 cmn_err(CE_NOTE, "pcihp (%s%d): card is removed" 2684 " from the slot %s", 2685 ddi_driver_name(pcihp_p->dip), 2686 ddi_get_instance(pcihp_p->dip), 2687 slotinfop->name); 2688 } 2689 2690 slotinfop->rstate = AP_RSTATE_EMPTY; 2691 2692 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2693 2694 break; 2695 2696 case HPC_EVENT_SLOT_POWER_ON: 2697 /* 2698 * Slot is connected to the bus. i.e the card is powered 2699 * on. Are there any error conditions to be checked? 2700 */ 2701 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): card is powered" 2702 " on in the slot %s", 2703 ddi_driver_name(pcihp_p->dip), 2704 ddi_get_instance(pcihp_p->dip), 2705 slotinfop->name)); 2706 2707 slotinfop->rstate = AP_RSTATE_CONNECTED; /* record rstate */ 2708 2709 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2710 2711 break; 2712 2713 case HPC_EVENT_SLOT_POWER_OFF: 2714 /* 2715 * Slot is disconnected from the bus. i.e the card is powered 2716 * off. Are there any error conditions to be checked? 2717 */ 2718 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): card is powered" 2719 " off in the slot %s", 2720 ddi_driver_name(pcihp_p->dip), 2721 ddi_get_instance(pcihp_p->dip), 2722 slotinfop->name)); 2723 2724 slotinfop->rstate = AP_RSTATE_DISCONNECTED; /* record rstate */ 2725 2726 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2727 2728 break; 2729 2730 case HPC_EVENT_SLOT_LATCH_SHUT: 2731 /* 2732 * Latch on the slot is closed. 2733 */ 2734 cmn_err(CE_NOTE, "pcihp (%s%d): latch is shut for the slot %s", 2735 ddi_driver_name(pcihp_p->dip), 2736 ddi_get_instance(pcihp_p->dip), 2737 slotinfop->name); 2738 2739 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2740 2741 break; 2742 2743 case HPC_EVENT_SLOT_LATCH_OPEN: 2744 /* 2745 * Latch on the slot is open. 2746 */ 2747 cmn_err(CE_NOTE, "pcihp (%s%d): latch is open for the slot %s", 2748 ddi_driver_name(pcihp_p->dip), 2749 ddi_get_instance(pcihp_p->dip), 2750 slotinfop->name); 2751 2752 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2753 2754 break; 2755 2756 case HPC_EVENT_PROCESS_ENUM: 2757 /* 2758 * HSC knows the device number of the slot where the 2759 * ENUM# was triggered. 2760 * Now finish the necessary actions to be taken on that 2761 * slot. Please note that the interrupt is already cleared. 2762 * This is the second(last) part of the ENUM# event processing. 2763 */ 2764 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): processing ENUM#" 2765 " for slot %s", 2766 ddi_driver_name(pcihp_p->dip), 2767 ddi_get_instance(pcihp_p->dip), 2768 slotinfop->name)); 2769 2770 mutex_exit(&slotinfop->slot_mutex); 2771 rv = pcihp_enum_slot(pcihp_p, slotinfop, pci_dev, 2772 PCIHP_HANDLE_ENUM, KM_SLEEP); 2773 mutex_enter(&slotinfop->slot_mutex); 2774 2775 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2776 2777 break; 2778 2779 case HPC_EVENT_BUS_ENUM: 2780 /* 2781 * Same as HPC_EVENT_SLOT_ENUM as defined the PSARC doc. 2782 * This term is used for better clarity of its usage. 2783 * 2784 * ENUM signal occurred on the bus. It may be from this 2785 * slot or any other hotplug slot on the bus. 2786 * 2787 * It is NOT recommended that the hotswap controller uses 2788 * event without queuing as NDI and other DDI calls may not 2789 * necessarily be invokable in interrupt context. 2790 * Hence the hotswap controller driver should use the 2791 * CLEAR_ENUM event which returns the slot device number 2792 * and then call HPC_EVENT_PROCESS_ENUM event with queuing. 2793 * 2794 * This can be used when the hotswap controller is 2795 * implementing a polled event mechanism to do the 2796 * necessary actions in a single call. 2797 */ 2798 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): ENUM# is generated" 2799 " on the bus (for slot %s ?)", 2800 ddi_driver_name(pcihp_p->dip), 2801 ddi_get_instance(pcihp_p->dip), 2802 slotinfop->name)); 2803 2804 mutex_exit(&slotinfop->slot_mutex); 2805 rv = pcihp_handle_enum(pcihp_p, pci_dev, PCIHP_HANDLE_ENUM, 2806 KM_SLEEP); 2807 mutex_enter(&slotinfop->slot_mutex); 2808 2809 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2810 2811 break; 2812 2813 case HPC_EVENT_SLOT_BLUE_LED_ON: 2814 2815 /* 2816 * Request to turn Hot Swap Blue LED on. 2817 */ 2818 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): Request To Turn On Blue " 2819 "LED on the bus (for slot %s ?)", 2820 ddi_driver_name(pcihp_p->dip), 2821 ddi_get_instance(pcihp_p->dip), 2822 slotinfop->name)); 2823 2824 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_BLUE_LED_ON); 2825 break; 2826 2827 case HPC_EVENT_DISABLE_ENUM: 2828 /* 2829 * Disable ENUM# which disables auto configuration on this slot 2830 */ 2831 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2832 pcihp_hs_csr_op(pcihp_p, pci_dev, 2833 HPC_EVENT_DISABLE_ENUM); 2834 slotinfop->slot_flags &= ~PCIHP_SLOT_AUTO_CFG_EN; 2835 } 2836 break; 2837 2838 case HPC_EVENT_ENABLE_ENUM: 2839 /* 2840 * Enable ENUM# which enables auto configuration on this slot. 2841 */ 2842 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2843 pcihp_hs_csr_op(pcihp_p, pci_dev, 2844 HPC_EVENT_ENABLE_ENUM); 2845 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 2846 } 2847 break; 2848 2849 case HPC_EVENT_SLOT_BLUE_LED_OFF: 2850 2851 /* 2852 * Request to turn Hot Swap Blue LED off. 2853 */ 2854 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): Request To Turn Off Blue " 2855 "LED on the bus (for slot %s ?)", 2856 ddi_driver_name(pcihp_p->dip), 2857 ddi_get_instance(pcihp_p->dip), 2858 slotinfop->name)); 2859 2860 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_BLUE_LED_OFF); 2861 2862 break; 2863 2864 case HPC_EVENT_SLOT_NOT_HEALTHY: 2865 /* 2866 * HEALTHY# signal on this slot is not OK. 2867 */ 2868 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): HEALTHY# signal is not OK" 2869 " for this slot %s", 2870 ddi_driver_name(pcihp_p->dip), 2871 ddi_get_instance(pcihp_p->dip), 2872 slotinfop->name)); 2873 2874 /* record the state in slot_flags field */ 2875 slotinfop->slot_flags |= PCIHP_SLOT_NOT_HEALTHY; 2876 slotinfop->condition = AP_COND_FAILED; 2877 2878 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2879 2880 break; 2881 2882 case HPC_EVENT_SLOT_HEALTHY_OK: 2883 /* 2884 * HEALTHY# signal on this slot is OK now. 2885 */ 2886 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): HEALTHY# signal is OK now" 2887 " for this slot %s", 2888 ddi_driver_name(pcihp_p->dip), 2889 ddi_get_instance(pcihp_p->dip), 2890 slotinfop->name)); 2891 2892 /* update the state in slot_flags field */ 2893 slotinfop->slot_flags &= ~PCIHP_SLOT_NOT_HEALTHY; 2894 slotinfop->condition = AP_COND_OK; 2895 2896 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2897 2898 break; 2899 2900 case HPC_EVENT_SLOT_ATTN: 2901 /* 2902 * Attention button is pressed. 2903 */ 2904 if (((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) || 2905 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 2906 /* 2907 * either auto-conifiguration or the slot is disabled, 2908 * ignore this event. 2909 */ 2910 break; 2911 } 2912 2913 if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED) 2914 hint = SE_INCOMING_RES; 2915 else 2916 hint = SE_OUTGOING_RES; 2917 2918 if (ddi_getprop(DDI_DEV_T_ANY, pcihp_p->dip, DDI_PROP_DONTPASS, 2919 "inkernel-autoconfig", 0) == 0) { 2920 pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_REQ, hint, 2921 pcihp_p->dip, KM_SLEEP); 2922 break; 2923 } 2924 2925 if ((slotinfop->ostate == AP_OSTATE_UNCONFIGURED) && 2926 (slotinfop->rstate != AP_RSTATE_EMPTY) && 2927 (slotinfop->condition != AP_COND_FAILED)) { 2928 if (slotinfop->rstate == AP_RSTATE_DISCONNECTED) { 2929 rv = hpc_nexus_connect(slotinfop->slot_hdl, 2930 NULL, 0); 2931 if (rv == HPC_SUCCESS) 2932 slotinfop->rstate = AP_RSTATE_CONNECTED; 2933 else 2934 break; 2935 } 2936 2937 rv = pcihp_configure_ap(pcihp_p, pci_dev); 2938 2939 } else if ((slotinfop->ostate == AP_OSTATE_CONFIGURED) && 2940 (slotinfop->rstate == AP_RSTATE_CONNECTED) && 2941 (slotinfop->condition != AP_COND_FAILED)) { 2942 rv = pcihp_unconfigure_ap(pcihp_p, pci_dev); 2943 2944 if (rv != HPC_SUCCESS) 2945 break; 2946 2947 rv = hpc_nexus_disconnect(slotinfop->slot_hdl, 2948 NULL, 0); 2949 if (rv == HPC_SUCCESS) 2950 slotinfop->rstate = AP_RSTATE_DISCONNECTED; 2951 } 2952 2953 break; 2954 2955 case HPC_EVENT_SLOT_POWER_FAULT: 2956 /* 2957 * Power fault is detected. 2958 */ 2959 cmn_err(CE_NOTE, "pcihp (%s%d): power-fault" 2960 " for this slot %s", 2961 ddi_driver_name(pcihp_p->dip), 2962 ddi_get_instance(pcihp_p->dip), 2963 slotinfop->name); 2964 2965 /* turn on ATTN led */ 2966 led_info.led = HPC_ATTN_LED; 2967 led_info.state = HPC_LED_ON; 2968 rv = hpc_nexus_control(slotinfop->slot_hdl, 2969 HPC_CTRL_SET_LED_STATE, (caddr_t)&led_info); 2970 2971 if (slotinfop->rstate == AP_RSTATE_CONNECTED) 2972 (void) hpc_nexus_disconnect(slotinfop->slot_hdl, 2973 NULL, 0); 2974 2975 slotinfop->condition = AP_COND_FAILED; 2976 2977 pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_AP_STATE_CHANGE, 2978 SE_NO_HINT, pcihp_p->dip, KM_SLEEP); 2979 2980 break; 2981 2982 default: 2983 cmn_err(CE_NOTE, "pcihp (%s%d): unknown event %x" 2984 " for this slot %s", 2985 ddi_driver_name(pcihp_p->dip), 2986 ddi_get_instance(pcihp_p->dip), event_mask, 2987 slotinfop->name); 2988 2989 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2990 2991 break; 2992 } 2993 2994 mutex_exit(&slotinfop->slot_mutex); 2995 2996 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, &rval); 2997 2998 return (rv); 2999 } 3000 3001 /* 3002 * This function is called to online or offline the devices for an 3003 * attachment point. If the PCI device number of the node matches 3004 * with the device number of the specified hot plug slot then 3005 * the operation is performed. 3006 */ 3007 static int 3008 pcihp_configure(dev_info_t *dip, void *hdl) 3009 { 3010 int pci_dev; 3011 struct pcihp_config_ctrl *ctrl = (struct pcihp_config_ctrl *)hdl; 3012 int rv; 3013 pci_regspec_t *pci_rp; 3014 int length; 3015 3016 /* 3017 * Get the PCI device number information from the devinfo 3018 * node. Since the node may not have the address field 3019 * setup (this is done in the DDI_INITCHILD of the parent) 3020 * we look up the 'reg' property to decode that information. 3021 */ 3022 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 3023 "reg", (int **)&pci_rp, (uint_t *)&length) != DDI_PROP_SUCCESS) { 3024 ctrl->rv = DDI_FAILURE; 3025 ctrl->dip = dip; 3026 return (DDI_WALK_TERMINATE); 3027 } 3028 3029 /* get the pci device id information */ 3030 pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 3031 3032 /* 3033 * free the memory allocated by ddi_prop_lookup_int_array 3034 */ 3035 ddi_prop_free(pci_rp); 3036 3037 /* 3038 * Match the node for the device number of the slot. 3039 */ 3040 if (pci_dev == ctrl->pci_dev) { /* node is a match */ 3041 if (ctrl->op == PCIHP_ONLINE) { 3042 /* it is CONFIGURE operation */ 3043 3044 /* skip this device if it is disabled or faulty */ 3045 if (pcihp_check_status(dip) == B_FALSE) { 3046 return (DDI_WALK_PRUNECHILD); 3047 } 3048 3049 rv = ndi_devi_online(dip, NDI_ONLINE_ATTACH|NDI_CONFIG); 3050 } else { 3051 /* 3052 * it is UNCONFIGURE operation. 3053 */ 3054 rv = ndi_devi_offline(dip, NDI_UNCONFIG); 3055 } 3056 if (rv != NDI_SUCCESS) { 3057 /* failed to attach/detach the driver(s) */ 3058 ctrl->rv = rv; 3059 ctrl->dip = dip; 3060 /* terminate the search if specified */ 3061 if (!(ctrl->flags & PCIHP_CFG_CONTINUE)) 3062 return (DDI_WALK_TERMINATE); 3063 } 3064 } 3065 3066 /* 3067 * continue the walk to the next sibling to look for a match 3068 * or to find other nodes if this card is a multi-function card. 3069 */ 3070 return (DDI_WALK_PRUNECHILD); 3071 } 3072 3073 /* 3074 * Check the device for a 'status' property. A conforming device 3075 * should have a status of "okay", "disabled", "fail", or "fail-xxx". 3076 * 3077 * Return FALSE for a conforming device that is disabled or faulted. 3078 * Return TRUE in every other case. 3079 */ 3080 static bool_t 3081 pcihp_check_status(dev_info_t *dip) 3082 { 3083 char *status_prop; 3084 bool_t rv = B_TRUE; 3085 3086 /* try to get the 'status' property */ 3087 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 3088 "status", &status_prop) == DDI_PROP_SUCCESS) { 3089 3090 /* 3091 * test if the status is "disabled", "fail", or 3092 * "fail-xxx". 3093 */ 3094 if (strcmp(status_prop, "disabled") == 0) { 3095 rv = B_FALSE; 3096 PCIHP_DEBUG((CE_NOTE, 3097 "pcihp (%s%d): device is in disabled state", 3098 ddi_driver_name(dip), ddi_get_instance(dip))); 3099 } else if (strncmp(status_prop, "fail", 4) == 0) { 3100 rv = B_FALSE; 3101 cmn_err(CE_WARN, 3102 "pcihp (%s%d): device is in fault state (%s)", 3103 ddi_driver_name(dip), ddi_get_instance(dip), 3104 status_prop); 3105 } 3106 3107 ddi_prop_free(status_prop); 3108 } 3109 3110 return (rv); 3111 } 3112 3113 /* control structure used to find a device in the devinfo tree */ 3114 struct pcihp_find_ctrl { 3115 uint_t device; 3116 uint_t function; 3117 dev_info_t *dip; 3118 }; 3119 3120 static dev_info_t * 3121 pcihp_devi_find(dev_info_t *dip, uint_t device, uint_t function) 3122 { 3123 struct pcihp_find_ctrl ctrl; 3124 int circular_count; 3125 3126 ctrl.device = device; 3127 ctrl.function = function; 3128 ctrl.dip = NULL; 3129 3130 ndi_devi_enter(dip, &circular_count); 3131 ddi_walk_devs(ddi_get_child(dip), pcihp_match_dev, (void *)&ctrl); 3132 ndi_devi_exit(dip, circular_count); 3133 3134 return (ctrl.dip); 3135 } 3136 3137 static int 3138 pcihp_match_dev(dev_info_t *dip, void *hdl) 3139 { 3140 struct pcihp_find_ctrl *ctrl = (struct pcihp_find_ctrl *)hdl; 3141 pci_regspec_t *pci_rp; 3142 int length; 3143 int pci_dev; 3144 int pci_func; 3145 3146 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 3147 "reg", (int **)&pci_rp, (uint_t *)&length) != DDI_PROP_SUCCESS) { 3148 ctrl->dip = NULL; 3149 return (DDI_WALK_TERMINATE); 3150 } 3151 3152 /* get the PCI device address info */ 3153 pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 3154 pci_func = PCI_REG_FUNC_G(pci_rp->pci_phys_hi); 3155 3156 /* 3157 * free the memory allocated by ddi_prop_lookup_int_array 3158 */ 3159 ddi_prop_free(pci_rp); 3160 3161 3162 if ((pci_dev == ctrl->device) && (pci_func == ctrl->function)) { 3163 /* found the match for the specified device address */ 3164 ctrl->dip = dip; 3165 return (DDI_WALK_TERMINATE); 3166 } 3167 3168 /* 3169 * continue the walk to the next sibling to look for a match. 3170 */ 3171 return (DDI_WALK_PRUNECHILD); 3172 } 3173 3174 #if 0 3175 /* 3176 * Probe the configuration space of the slot to determine the receptacle 3177 * state. There may not be any devinfo tree created for this slot. 3178 */ 3179 static void 3180 pcihp_probe_slot_state(dev_info_t *dip, int dev, hpc_slot_state_t *rstatep) 3181 { 3182 /* XXX FIX IT */ 3183 } 3184 #endif 3185 3186 /* 3187 * This routine is called when a ENUM# assertion is detected for a bus. 3188 * Since ENUM# may be bussed, the slot that asserted ENUM# may not be known. 3189 * The HPC Driver passes the handle of a slot that is its best guess. 3190 * If the best guess slot is the one that asserted ENUM#, the proper handling 3191 * will be done. If its not, all possible slots will be locked at until 3192 * one that is asserting ENUM is found. 3193 * Also, indicate to the HSC to turn on ENUM# after it is serviced, 3194 * incase if it was disabled by the HSC due to the nature of asynchronous 3195 * delivery of interrupt by the framework. 3196 * 3197 * opcode has the following meanings. 3198 * PCIHP_CLEAR_ENUM = just clear interrupt and return the PCI device no. if 3199 * success, else return -1. 3200 * PCIHP_HANDLE_ENUM = clear interrupt and handle interrupt also. 3201 * 3202 */ 3203 static int 3204 pcihp_handle_enum(pcihp_t *pcihp_p, int favorite_pci_dev, int opcode, 3205 int kmflag) 3206 { 3207 struct pcihp_slotinfo *slotinfop; 3208 int pci_dev, rc, event_serviced = 0; 3209 3210 /* 3211 * Handle ENUM# condition for the "favorite" slot first. 3212 */ 3213 slotinfop = &pcihp_p->slotinfo[favorite_pci_dev]; 3214 if (slotinfop) { 3215 /* 3216 * First try the "favorite" pci device. This is the device 3217 * associated with the handle passed by the HPC Driver. 3218 */ 3219 rc = pcihp_enum_slot(pcihp_p, slotinfop, favorite_pci_dev, 3220 opcode, kmflag); 3221 if (rc != HPC_EVENT_UNCLAIMED) { /* indicates success */ 3222 event_serviced = 1; 3223 /* This MUST be a non-DEBUG feature. */ 3224 if (! pcihp_enum_scan_all) { 3225 return (rc); 3226 } 3227 } 3228 } 3229 3230 /* 3231 * If ENUM# is implemented as a radial signal, then there is no 3232 * need to further poll the slots. 3233 */ 3234 if (pcihp_p->bus_flags & PCIHP_BUS_ENUM_RADIAL) 3235 goto enum_service_check; 3236 3237 /* 3238 * If the "favorite" pci device didn't assert ENUM#, then 3239 * try the rest. Once we find and handle a device that asserted 3240 * ENUM#, then we will terminate the walk by returning unless 3241 * scan-all flag is set. 3242 */ 3243 for (pci_dev = 0; pci_dev < PCI_MAX_DEVS; pci_dev++) { 3244 if (pci_dev != favorite_pci_dev) { 3245 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3246 if (slotinfop == NULL) { 3247 continue; 3248 } 3249 /* Only CPCI devices support ENUM# generation. */ 3250 if (!(slotinfop->slot_type & HPC_SLOT_TYPE_CPCI)) 3251 continue; 3252 rc = pcihp_enum_slot(pcihp_p, slotinfop, pci_dev, 3253 opcode, kmflag); 3254 if (rc != HPC_EVENT_UNCLAIMED) { 3255 event_serviced = 1; 3256 /* This MUST be a non-DEBUG feature. */ 3257 if (! pcihp_enum_scan_all) 3258 break; 3259 } 3260 } 3261 } 3262 3263 enum_service_check: 3264 if (event_serviced) { 3265 return (rc); 3266 } 3267 3268 /* No ENUM# event found, Return */ 3269 return (HPC_EVENT_UNCLAIMED); 3270 } 3271 3272 /* 3273 * This routine attempts to handle a possible ENUM# assertion case for a 3274 * specified slot. This only works for adapters that implement Hot Swap 3275 * Friendly Silicon. If the slot's HS_CSR is read and it specifies ENUM# 3276 * has been asserted, either the insertion or removal handlers will be 3277 * called. 3278 */ 3279 static int 3280 pcihp_enum_slot(pcihp_t *pcihp_p, struct pcihp_slotinfo *slotinfop, int pci_dev, 3281 int opcode, int kmflag) 3282 { 3283 ddi_acc_handle_t handle; 3284 dev_info_t *dip, *new_child = NULL; 3285 int result, rv = -1; 3286 uint8_t hs_csr; 3287 3288 if (pcihp_config_setup(&dip, &handle, &new_child, pci_dev, 3289 pcihp_p) != DDI_SUCCESS) { 3290 return (HPC_EVENT_UNCLAIMED); 3291 } 3292 3293 /* 3294 * Read the device's HS_CSR. 3295 */ 3296 result = pcihp_get_hs_csr(slotinfop, handle, (uint8_t *)&hs_csr); 3297 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): hs_csr = %x, flags = %x", 3298 ddi_driver_name(pcihp_p->dip), ddi_get_instance(pcihp_p->dip), 3299 hs_csr, slotinfop->slot_flags)); 3300 /* 3301 * we teardown our device map here, because in case of an 3302 * extraction event, our nodes would be freed and a teardown 3303 * will cause problems. 3304 */ 3305 pcihp_config_teardown(&handle, &new_child, pci_dev, pcihp_p); 3306 3307 if (result == PCIHP_SUCCESS) { 3308 3309 /* If ENUM# is masked, then it is not us. Some other device */ 3310 if ((hs_csr & HS_CSR_EIM) && (opcode == PCIHP_CLEAR_ENUM)) 3311 return (HPC_EVENT_UNCLAIMED); 3312 /* 3313 * This device supports Full Hot Swap and implements 3314 * the Hot Swap Control and Status Register. 3315 */ 3316 if ((hs_csr & HS_CSR_INS) || 3317 (slotinfop->slot_flags & PCIHP_SLOT_ENUM_INS_PENDING)) { 3318 /* handle insertion ENUM */ 3319 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): " 3320 "Handle Insertion ENUM (INS) " 3321 "on the bus (for slot %s ?)", 3322 ddi_driver_name(pcihp_p->dip), 3323 ddi_get_instance(pcihp_p->dip), 3324 slotinfop->name)); 3325 3326 /* 3327 * generate sysevent 3328 */ 3329 3330 if (opcode == PCIHP_CLEAR_ENUM) 3331 pcihp_gen_sysevent(slotinfop->name, 3332 PCIHP_DR_REQ, 3333 SE_INCOMING_RES, pcihp_p->dip, 3334 kmflag); 3335 3336 rv = pcihp_handle_enum_insertion(pcihp_p, pci_dev, 3337 opcode, kmflag); 3338 3339 } else if ((hs_csr & HS_CSR_EXT) || 3340 (slotinfop->slot_flags & PCIHP_SLOT_ENUM_EXT_PENDING)) { 3341 /* handle extraction ENUM */ 3342 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): " 3343 "Handle Extraction ENUM (EXT) " 3344 "on the bus (for slot %s ?)", 3345 ddi_driver_name(pcihp_p->dip), 3346 ddi_get_instance(pcihp_p->dip), 3347 slotinfop->name)); 3348 3349 /* 3350 * generate sysevent 3351 */ 3352 3353 if (opcode == PCIHP_CLEAR_ENUM) 3354 pcihp_gen_sysevent(slotinfop->name, 3355 PCIHP_DR_REQ, 3356 SE_OUTGOING_RES, 3357 pcihp_p->dip, 3358 kmflag); 3359 3360 rv = pcihp_handle_enum_extraction(pcihp_p, pci_dev, 3361 opcode, kmflag); 3362 } 3363 if (opcode == PCIHP_CLEAR_ENUM) { 3364 if (rv == PCIHP_SUCCESS) 3365 rv = pci_dev; 3366 else 3367 rv = HPC_EVENT_UNCLAIMED; 3368 } 3369 } 3370 3371 return (rv); 3372 } 3373 3374 /* 3375 * This routine is called when a ENUM# caused by lifting the lever 3376 * is detected. If the occupant is configured, it will be unconfigured. 3377 * If the occupant is already unconfigured or is successfully unconfigured, 3378 * the blue LED on the adapter is illuminated which means its OK to remove. 3379 * Please note that the lock must be released before invoking the 3380 * generic AP unconfigure function. 3381 */ 3382 static int 3383 pcihp_handle_enum_extraction(pcihp_t *pcihp_p, int pci_dev, int opcode, 3384 int kmflag) 3385 { 3386 struct pcihp_slotinfo *slotinfop; 3387 int rv = PCIHP_FAILURE; 3388 3389 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3390 3391 /* 3392 * It was observed that, clearing the EXT bit turned the LED ON. 3393 * This is a BIG problem in case if the unconfigure operation 3394 * failed because the board was busy. 3395 * In order to avoid this confusing situation (LED ON but the board 3396 * is not unconfigured), we instead decided not to clear EXT but 3397 * disable further ENUM# from this slot. Disabling ENUM# clears 3398 * the interrupt. 3399 * Finally before returning we clear the interrupt and enable 3400 * ENUM# back again from this slot. 3401 */ 3402 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM); 3403 if (opcode == PCIHP_CLEAR_ENUM) { 3404 slotinfop->slot_flags |= PCIHP_SLOT_ENUM_EXT_PENDING; 3405 return (PCIHP_SUCCESS); 3406 } 3407 3408 mutex_enter(&slotinfop->slot_mutex); 3409 rv = pcihp_unconfigure_ap(pcihp_p, pci_dev); 3410 mutex_exit(&slotinfop->slot_mutex); 3411 if (rv != HPC_SUCCESS && rv != EBUSY) { 3412 cmn_err(CE_NOTE, "%s%d: PCI device %x Failed on Unconfigure", 3413 ddi_driver_name(pcihp_p->dip), 3414 ddi_get_instance(pcihp_p->dip), pci_dev); 3415 } 3416 if (rv == EBUSY) 3417 cmn_err(CE_NOTE, "%s%d: PCI device %x Busy", 3418 ddi_driver_name(pcihp_p->dip), 3419 ddi_get_instance(pcihp_p->dip), pci_dev); 3420 if (rv) { 3421 if (pcihp_cpci_blue_led) 3422 pcihp_hs_csr_op(pcihp_p, pci_dev, 3423 HPC_EVENT_SLOT_BLUE_LED_OFF); 3424 } 3425 /* 3426 * we must clear interrupt in case the unconfigure didn't do it 3427 * due to a duplicate interrupt. Extraction is success. 3428 */ 3429 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_UNCONFIGURE); 3430 3431 if (!rv) { 3432 /* 3433 * Sys Event Notification. 3434 */ 3435 pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_AP_STATE_CHANGE, 3436 SE_HINT_REMOVE, pcihp_p->dip, kmflag); 3437 } 3438 3439 /* 3440 * Enable interrupts back from this board. 3441 * This could potentially be problematic in case if the user is 3442 * quick enough to extract the board. 3443 * But we must do it just in case if the switch is closed again. 3444 */ 3445 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM); 3446 slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_EXT_PENDING; 3447 return (rv); 3448 } 3449 3450 /* 3451 * This routine is called when a ENUM# caused by when an adapter insertion 3452 * is detected. If the occupant is successfully configured (i.e. PCI resources 3453 * successfully assigned, the blue LED is left off, otherwise if configuration 3454 * is not successful, the blue LED is illuminated. 3455 * Please note that the lock must be released before invoking the 3456 * generic AP configure function. 3457 */ 3458 static int 3459 pcihp_handle_enum_insertion(pcihp_t *pcihp_p, int pci_dev, int opcode, 3460 int kmflag) 3461 { 3462 struct pcihp_slotinfo *slotinfop; 3463 int rv = PCIHP_FAILURE; 3464 minor_t ap_minor; 3465 major_t ap_major; 3466 3467 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3468 slotinfop->hs_csr_location = 0; 3469 /* we clear the interrupt here. This is a must here. */ 3470 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_CONFIGURE); 3471 /* 3472 * disable further interrupt from this board till it is 3473 * configured. 3474 */ 3475 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM); 3476 if (opcode == PCIHP_CLEAR_ENUM) { 3477 slotinfop->slot_flags |= PCIHP_SLOT_ENUM_INS_PENDING; 3478 return (PCIHP_SUCCESS); 3479 } 3480 3481 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 3482 PCIHP_SLOT_AUTO_CFG_EN) { 3483 mutex_enter(&slotinfop->slot_mutex); 3484 rv = pcihp_configure_ap(pcihp_p, pci_dev); 3485 mutex_exit(&slotinfop->slot_mutex); 3486 if (rv != HPC_SUCCESS) { /* configure failed */ 3487 cmn_err(CE_NOTE, "%s%d: PCI device %x Failed on" 3488 " Configure", ddi_driver_name(pcihp_p->dip), 3489 ddi_get_instance(pcihp_p->dip), pci_dev); 3490 if (pcihp_cpci_blue_led) 3491 pcihp_hs_csr_op(pcihp_p, pci_dev, 3492 HPC_EVENT_SLOT_BLUE_LED_ON); 3493 } 3494 3495 /* pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_CLEAR_ENUM); */ 3496 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM); 3497 3498 if (!rv) { 3499 ap_major = ddi_driver_major(pcihp_p->dip); 3500 ap_minor = PCIHP_AP_MINOR_NUM( 3501 ddi_get_instance(pcihp_p->dip), pci_dev); 3502 pcihp_create_occupant_props(pcihp_p->dip, 3503 makedevice(ap_major, ap_minor), pci_dev); 3504 3505 /* 3506 * Sys Event Notification. 3507 */ 3508 pcihp_gen_sysevent(slotinfop->name, 3509 PCIHP_DR_AP_STATE_CHANGE, 3510 SE_HINT_INSERT, pcihp_p->dip, kmflag); 3511 } 3512 3513 } else 3514 rv = PCIHP_SUCCESS; 3515 slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_INS_PENDING; 3516 return (rv); 3517 } 3518 3519 /* 3520 * Read the Hot Swap Control and Status Register (HS_CSR) and 3521 * place the result in the location pointed to be hs_csr. 3522 */ 3523 static int 3524 pcihp_get_hs_csr(struct pcihp_slotinfo *slotinfop, 3525 ddi_acc_handle_t config_handle, uint8_t *hs_csr) 3526 { 3527 if (slotinfop->hs_csr_location == -1) 3528 return (PCIHP_FAILURE); 3529 3530 if (slotinfop->hs_csr_location == 0) { 3531 slotinfop->hs_csr_location = 3532 pcihp_get_hs_csr_location(config_handle); 3533 3534 if (slotinfop->hs_csr_location == -1) 3535 return (PCIHP_FAILURE); 3536 } 3537 *hs_csr = pci_config_get8(config_handle, slotinfop->hs_csr_location); 3538 return (PCIHP_SUCCESS); 3539 } 3540 3541 /* 3542 * Write the Hot Swap Control and Status Register (HS_CSR) with 3543 * the value being pointed at by hs_csr. 3544 */ 3545 static void 3546 pcihp_set_hs_csr(struct pcihp_slotinfo *slotinfop, 3547 ddi_acc_handle_t config_handle, uint8_t *hs_csr) 3548 { 3549 if (slotinfop->hs_csr_location == -1) 3550 return; 3551 if (slotinfop->hs_csr_location == 0) { 3552 slotinfop->hs_csr_location = 3553 pcihp_get_hs_csr_location(config_handle); 3554 if (slotinfop->hs_csr_location == -1) 3555 return; 3556 } 3557 pci_config_put8(config_handle, slotinfop->hs_csr_location, *hs_csr); 3558 PCIHP_DEBUG((CE_NOTE, "hs_csr wrote %x, read %x", *hs_csr, 3559 pci_config_get8(config_handle, slotinfop->hs_csr_location))); 3560 } 3561 3562 static int 3563 pcihp_get_hs_csr_location(ddi_acc_handle_t config_handle) 3564 { 3565 uint8_t cap_id; 3566 uint_t cap_id_loc; 3567 uint16_t status; 3568 int location = -1; 3569 #define PCI_STAT_ECP_SUPP 0x10 3570 3571 /* 3572 * Need to check the Status register for ECP support first. 3573 * Also please note that for type 1 devices, the 3574 * offset could change. Should support type 1 next. 3575 */ 3576 status = pci_config_get16(config_handle, PCI_CONF_STAT); 3577 if (!(status & PCI_STAT_ECP_SUPP)) { 3578 PCIHP_DEBUG((CE_NOTE, "No Ext Capabilities for device\n")); 3579 return (-1); 3580 } 3581 cap_id_loc = pci_config_get8(config_handle, PCI_CONF_EXTCAP); 3582 3583 /* 3584 * Walk the list of capabilities, but don't walk past the end 3585 * of the Configuration Space Header. 3586 */ 3587 while ((cap_id_loc) && (cap_id_loc < PCI_CONF_HDR_SIZE)) { 3588 3589 cap_id = pci_config_get8(config_handle, cap_id_loc); 3590 3591 if (cap_id == CPCI_HOTSWAP_CAPID) { 3592 location = cap_id_loc + PCI_ECP_HS_CSR; 3593 break; 3594 } 3595 cap_id_loc = pci_config_get8(config_handle, 3596 cap_id_loc + 1); 3597 } 3598 return (location); 3599 } 3600 3601 static int 3602 pcihp_add_dummy_reg_property(dev_info_t *dip, 3603 uint_t bus, uint_t device, uint_t func) 3604 { 3605 pci_regspec_t dummy_reg; 3606 3607 bzero(&dummy_reg, sizeof (dummy_reg)); 3608 3609 dummy_reg.pci_phys_hi = PCIHP_MAKE_REG_HIGH(bus, device, func, 0); 3610 3611 return (ndi_prop_update_int_array(DDI_DEV_T_NONE, dip, 3612 "reg", (int *)&dummy_reg, sizeof (pci_regspec_t)/sizeof (int))); 3613 } 3614 3615 static void 3616 pcihp_hs_csr_op(pcihp_t *pcihp_p, int pci_dev, int event) 3617 { 3618 struct pcihp_slotinfo *slotinfop; 3619 ddi_acc_handle_t config_handle; 3620 dev_info_t *dip, *new_child = NULL; 3621 uint8_t hs_csr; 3622 int result; 3623 3624 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3625 3626 if (pcihp_config_setup(&dip, &config_handle, &new_child, pci_dev, 3627 pcihp_p) != DDI_SUCCESS) { 3628 return; 3629 } 3630 3631 result = pcihp_get_hs_csr(slotinfop, config_handle, (uint8_t *)&hs_csr); 3632 if ((result != PCIHP_SUCCESS) || (event == -1)) { 3633 pcihp_config_teardown(&config_handle, &new_child, pci_dev, 3634 pcihp_p); 3635 return; 3636 } 3637 3638 hs_csr &= 0xf; 3639 switch (event) { 3640 case HPC_EVENT_SLOT_BLUE_LED_ON: 3641 hs_csr |= HS_CSR_LOO; 3642 break; 3643 case HPC_EVENT_SLOT_BLUE_LED_OFF: 3644 hs_csr &= ~HS_CSR_LOO; 3645 break; 3646 case HPC_EVENT_SLOT_CONFIGURE: 3647 hs_csr |= HS_CSR_INS; /* clear INS */ 3648 break; 3649 case HPC_EVENT_CLEAR_ENUM: 3650 hs_csr |= (HS_CSR_INS | HS_CSR_EXT); 3651 break; 3652 case HPC_EVENT_SLOT_UNCONFIGURE: 3653 hs_csr |= HS_CSR_EXT; /* clear EXT */ 3654 break; 3655 case HPC_EVENT_ENABLE_ENUM: 3656 hs_csr &= ~HS_CSR_EIM; 3657 break; 3658 case HPC_EVENT_DISABLE_ENUM: 3659 hs_csr |= HS_CSR_EIM; 3660 break; 3661 case HPC_EVENT_SLOT_NOT_HEALTHY: 3662 case HPC_EVENT_SLOT_HEALTHY_OK: 3663 default: 3664 break; 3665 } 3666 pcihp_set_hs_csr(slotinfop, config_handle, (uint8_t *)&hs_csr); 3667 pcihp_config_teardown(&config_handle, &new_child, pci_dev, pcihp_p); 3668 } 3669 3670 static int 3671 pcihp_config_setup(dev_info_t **dip, ddi_acc_handle_t *handle, 3672 dev_info_t **new_child, int pci_dev, pcihp_t *pcihp_p) 3673 { 3674 dev_info_t *pdip = pcihp_p->dip; 3675 int bus, len, rc = DDI_SUCCESS; 3676 struct pcihp_slotinfo *slotinfop; 3677 hpc_slot_state_t rstate; 3678 ddi_acc_hdl_t *hp; 3679 pci_bus_range_t pci_bus_range; 3680 3681 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3682 3683 /* 3684 * If declared failed, don't allow Config operations. 3685 * Otherwise, if good or failing, it is assumed Ok 3686 * to get config data. 3687 */ 3688 if (slotinfop->condition == AP_COND_FAILED) { 3689 return (PCIHP_FAILURE); 3690 } 3691 /* 3692 * check to see if there is a hardware present first. 3693 * If no hardware present, no need to probe this slot. 3694 * We can do this first probably as a first step towards 3695 * safeguarding from accidental removal (we don't support it!). 3696 */ 3697 if (hpc_nexus_control(slotinfop->slot_hdl, HPC_CTRL_GET_SLOT_STATE, 3698 (caddr_t)&rstate) != 0) { 3699 return (DDI_FAILURE); 3700 } 3701 3702 if (rstate != HPC_SLOT_CONNECTED) { 3703 /* error. slot must be connected */ 3704 return (DDI_FAILURE); 3705 } 3706 *new_child = NULL; 3707 3708 /* 3709 * If there is no dip then we need to see if an 3710 * adapter has just been hot plugged. 3711 */ 3712 len = sizeof (pci_bus_range_t); 3713 if (ddi_getlongprop_buf(DDI_DEV_T_ANY, pdip, 3714 0, "bus-range", 3715 (caddr_t)&pci_bus_range, &len) != DDI_SUCCESS) { 3716 3717 return (PCIHP_FAILURE); 3718 } 3719 3720 /* primary bus number of this bus node */ 3721 bus = pci_bus_range.lo; 3722 3723 if (ndi_devi_alloc(pdip, DEVI_PSEUDO_NEXNAME, 3724 (pnode_t)DEVI_SID_NODEID, dip) != NDI_SUCCESS) { 3725 3726 PCIHP_DEBUG((CE_NOTE, "Failed to alloc probe node\n")); 3727 return (PCIHP_FAILURE); 3728 } 3729 3730 if (pcihp_add_dummy_reg_property(*dip, bus, 3731 pci_dev, 0) != DDI_SUCCESS) { 3732 3733 (void) ndi_devi_free(*dip); 3734 return (PCIHP_FAILURE); 3735 } 3736 3737 /* 3738 * Probe for a device. Possibly a non (c)PCI board could be sitting 3739 * here which would never respond to PCI config cycles - in which 3740 * case we return. Eventually a configure operation would fail. 3741 */ 3742 if (pci_config_setup(*dip, handle) != DDI_SUCCESS) { 3743 cmn_err(CE_WARN, "Cannot set config space map for" 3744 " pci device number %d", pci_dev); 3745 (void) ndi_devi_free(*dip); 3746 return (PCIHP_FAILURE); 3747 } 3748 3749 /* 3750 * See if there is any PCI HW at this location 3751 * by reading the Vendor ID. If it returns with 0xffff 3752 * then there is no hardware at this location. 3753 */ 3754 if (pcihp_indirect_map(*dip) == DDI_SUCCESS) { 3755 if (pci_config_get16(*handle, 0) == 0xffff) { 3756 pci_config_teardown(handle); 3757 (void) ndi_devi_free(*dip); 3758 return (PCIHP_FAILURE); 3759 } 3760 } else { 3761 /* Check if mapping is OK */ 3762 hp = impl_acc_hdl_get(*handle); 3763 3764 if (ddi_peek16(*dip, (int16_t *)(hp->ah_addr), 3765 (int16_t *)0) != DDI_SUCCESS) { 3766 #ifdef DEBUG 3767 cmn_err(CE_WARN, "Cannot Map PCI config space for " 3768 "device number %d", pci_dev); 3769 #endif 3770 pci_config_teardown(handle); 3771 (void) ndi_devi_free(*dip); 3772 return (PCIHP_FAILURE); 3773 } 3774 } 3775 3776 *new_child = *dip; 3777 return (rc); 3778 3779 } 3780 3781 static void 3782 pcihp_config_teardown(ddi_acc_handle_t *handle, 3783 dev_info_t **new_child, int pci_dev, pcihp_t *pcihp_p) 3784 { 3785 struct pcihp_slotinfo *slotinfop = &pcihp_p->slotinfo[pci_dev]; 3786 3787 pci_config_teardown(handle); 3788 if (*new_child) { 3789 (void) ndi_devi_free(*new_child); 3790 /* 3791 * If occupant not configured, reset HS_CSR location 3792 * so that we reprobe. This covers cases where 3793 * the receptacle had a status change without a 3794 * notification to the framework. 3795 */ 3796 if (slotinfop->ostate != AP_OSTATE_CONFIGURED) 3797 slotinfop->hs_csr_location = 0; 3798 } 3799 } 3800 3801 static int 3802 pcihp_get_board_type(struct pcihp_slotinfo *slotinfop) 3803 { 3804 hpc_board_type_t board_type; 3805 3806 /* 3807 * Get board type data structure, hpc_board_type_t. 3808 */ 3809 if (hpc_nexus_control(slotinfop->slot_hdl, HPC_CTRL_GET_BOARD_TYPE, 3810 (caddr_t)&board_type) != 0) { 3811 3812 cmn_err(CE_WARN, "Cannot Get Board Type.."); 3813 return (-1); 3814 } 3815 3816 /* 3817 * We expect the Hotswap Controller to tell us if the board is 3818 * a hotswap board or not, as it probably cannot differentiate 3819 * between a basic hotswap board, a non hotswap board and a 3820 * hotswap nonfriendly board. 3821 * So here is the logic to differentiate between the various 3822 * types of cPCI boards. 3823 * In case if the HSC returns board type as unknown, we assign 3824 * the default board type as defined by a configurable variable 3825 * for a BHS, nonfriendly FHS and non HS board. 3826 */ 3827 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 3828 if (slotinfop->hs_csr_location > 0) 3829 board_type = HPC_BOARD_CPCI_FULL_HS; 3830 else { 3831 if (board_type == HPC_BOARD_CPCI_HS) { 3832 if (slotinfop->hs_csr_location == -1) 3833 board_type = HPC_BOARD_CPCI_BASIC_HS; 3834 } 3835 if (board_type == HPC_BOARD_UNKNOWN) { 3836 if (slotinfop->hs_csr_location == -1) { 3837 board_type = pcihp_cpci_board_type; 3838 } else if (slotinfop->hs_csr_location != 0) { 3839 board_type = HPC_BOARD_CPCI_FULL_HS; 3840 } 3841 } 3842 } 3843 /* 3844 * If board type is a non hotswap board, then we must 3845 * deny a unconfigure operation. So set this flag. 3846 * Strictly speaking, there is no reason not to disallow 3847 * a unconfigure operation on nonhotswap boards. But this 3848 * is the only way we can prevent a user from accidentally 3849 * removing the board and damaging it. 3850 */ 3851 if (board_type == HPC_BOARD_CPCI_NON_HS) 3852 slotinfop->slot_flags |= PCIHP_SLOT_DEV_NON_HOTPLUG; 3853 else 3854 slotinfop->slot_flags &= ~PCIHP_SLOT_DEV_NON_HOTPLUG; 3855 } 3856 return (board_type); 3857 } 3858 3859 3860 /* 3861 * Generate the System Event with a possible hint. 3862 */ 3863 static void 3864 pcihp_gen_sysevent(char *slot_name, int event_sub_class, int hint, 3865 dev_info_t *self, int kmflag) 3866 { 3867 3868 int err; 3869 char *ev_subclass = NULL; 3870 sysevent_id_t eid; 3871 nvlist_t *ev_attr_list = NULL; 3872 char attach_pnt[MAXPATHLEN]; 3873 3874 /* 3875 * Minor device name (AP) will be bus path 3876 * concatenated with slot name 3877 */ 3878 3879 (void) strcpy(attach_pnt, PCIHP_DEVICES_STR); 3880 (void) ddi_pathname(self, attach_pnt + strlen(PCIHP_DEVICES_STR)); 3881 (void) strcat(attach_pnt, ":"); 3882 (void) strcat(attach_pnt, slot_name); 3883 err = nvlist_alloc(&ev_attr_list, NV_UNIQUE_NAME_TYPE, kmflag); 3884 if (err != 0) { 3885 cmn_err(CE_WARN, 3886 "%s%d: Failed to allocate memory " 3887 "for event attributes%s", ddi_driver_name(self), 3888 ddi_get_instance(self), ESC_DR_AP_STATE_CHANGE); 3889 return; 3890 } 3891 3892 switch (event_sub_class) { 3893 3894 /* event sub class: ESC_DR_AP_STATE_CHANGE */ 3895 case PCIHP_DR_AP_STATE_CHANGE: 3896 3897 ev_subclass = ESC_DR_AP_STATE_CHANGE; 3898 3899 switch (hint) { 3900 3901 case SE_NO_HINT: /* fall through */ 3902 case SE_HINT_INSERT: /* fall through */ 3903 case SE_HINT_REMOVE: 3904 3905 3906 err = nvlist_add_string(ev_attr_list, DR_HINT, 3907 SE_HINT2STR(hint)); 3908 3909 if (err != 0) { 3910 cmn_err(CE_WARN, "%s%d: Failed to add attr [%s]" 3911 " for %s event", ddi_driver_name(self), 3912 ddi_get_instance(self), 3913 DR_HINT, ESC_DR_AP_STATE_CHANGE); 3914 nvlist_free(ev_attr_list); 3915 return; 3916 } 3917 break; 3918 3919 default: 3920 cmn_err(CE_WARN, "%s%d: Unknown hint on sysevent", 3921 ddi_driver_name(self), ddi_get_instance(self)); 3922 nvlist_free(ev_attr_list); 3923 return; 3924 } 3925 3926 break; 3927 3928 /* event sub class: ESC_DR_REQ */ 3929 case PCIHP_DR_REQ: 3930 3931 ev_subclass = ESC_DR_REQ; 3932 3933 switch (hint) { 3934 3935 case SE_INVESTIGATE_RES: /* fall through */ 3936 case SE_INCOMING_RES: /* fall through */ 3937 case SE_OUTGOING_RES: /* fall through */ 3938 3939 err = nvlist_add_string(ev_attr_list, DR_REQ_TYPE, 3940 SE_REQ2STR(hint)); 3941 3942 if (err != 0) { 3943 cmn_err(CE_WARN, 3944 "%s%d: Failed to add attr [%s] " 3945 "for %s event", ddi_driver_name(self), 3946 ddi_get_instance(self), 3947 DR_REQ_TYPE, ESC_DR_REQ); 3948 nvlist_free(ev_attr_list); 3949 return; 3950 } 3951 break; 3952 3953 default: 3954 cmn_err(CE_WARN, "%s%d: Unknown hint on sysevent", 3955 ddi_driver_name(self), ddi_get_instance(self)); 3956 nvlist_free(ev_attr_list); 3957 return; 3958 } 3959 3960 break; 3961 3962 default: 3963 cmn_err(CE_WARN, "%s%d: Unknown Event subclass", 3964 ddi_driver_name(self), ddi_get_instance(self)); 3965 nvlist_free(ev_attr_list); 3966 return; 3967 } 3968 3969 /* 3970 * Add attachment point as attribute (common attribute) 3971 */ 3972 3973 err = nvlist_add_string(ev_attr_list, DR_AP_ID, attach_pnt); 3974 3975 if (err != 0) { 3976 cmn_err(CE_WARN, "%s%d: Failed to add attr [%s] for %s event", 3977 ddi_driver_name(self), ddi_get_instance(self), 3978 DR_AP_ID, EC_DR); 3979 nvlist_free(ev_attr_list); 3980 return; 3981 } 3982 3983 3984 /* 3985 * Log this event with sysevent framework. 3986 */ 3987 3988 err = ddi_log_sysevent(self, DDI_VENDOR_SUNW, EC_DR, 3989 ev_subclass, ev_attr_list, &eid, 3990 ((kmflag == KM_SLEEP) ? DDI_SLEEP : DDI_NOSLEEP)); 3991 if (err != 0) { 3992 cmn_err(CE_WARN, "%s%d: Failed to log %s event", 3993 ddi_driver_name(self), ddi_get_instance(self), EC_DR); 3994 } 3995 3996 nvlist_free(ev_attr_list); 3997 } 3998 3999 int 4000 pcihp_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, 4001 int flags, char *name, caddr_t valuep, int *lengthp) 4002 { 4003 int pci_dev; 4004 4005 if (dev == DDI_DEV_T_ANY) 4006 goto skip; 4007 4008 if (strcmp(name, "pci-occupant") == 0) { 4009 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(dev)); 4010 pcihp_create_occupant_props(dip, dev, pci_dev); 4011 } 4012 /* other cases... */ 4013 skip: 4014 return (ddi_prop_op(dev, dip, prop_op, flags, name, valuep, lengthp)); 4015 } 4016 4017 /* 4018 * this function is called only for SPARC platforms, where we may have 4019 * a mix n' match of direct vs indirectly mapped configuration space. 4020 * On x86, this function should always return success since the configuration 4021 * space is always indirect mapped. 4022 */ 4023 /*ARGSUSED*/ 4024 static int 4025 pcihp_indirect_map(dev_info_t *dip) 4026 { 4027 #if defined(__sparc) 4028 int rc = DDI_FAILURE; 4029 4030 if (ddi_prop_get_int(DDI_DEV_T_ANY, ddi_get_parent(dip), 0, 4031 PCI_DEV_CONF_MAP_PROP, DDI_FAILURE) != DDI_FAILURE) 4032 rc = DDI_SUCCESS; 4033 else 4034 if (ddi_prop_get_int(DDI_DEV_T_ANY, ddi_get_parent(dip), 4035 0, PCI_BUS_CONF_MAP_PROP, DDI_FAILURE) != DDI_FAILURE) 4036 rc = DDI_SUCCESS; 4037 return (rc); 4038 #else 4039 return (DDI_SUCCESS); 4040 #endif 4041 } 4042
Indexes created Wed Feb 10 05:58:14 UTC 2010
Terms of Use |
Privacy |
Trademarks |
Copyright Policy |
Site Guidelines |
Site Map |
Help
Your use of this web site or any of its content or software indicates your agreement to be bound by these Terms of Use.
© 2010, Oracle Corporation and/or its affiliates
