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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * PCI to PCI bus bridge nexus driver 31 */ 32 33 #include <sys/conf.h> 34 #include <sys/kmem.h> 35 #include <sys/debug.h> 36 #include <sys/modctl.h> 37 #include <sys/autoconf.h> 38 #include <sys/ddi_impldefs.h> 39 #include <sys/ddi_subrdefs.h> 40 #include <sys/ddifm.h> 41 #include <sys/fm/util.h> 42 #include <sys/fm/protocol.h> 43 #include <sys/fm/io/pci.h> 44 #include <sys/pci.h> 45 #include <sys/pci/pci_nexus.h> 46 #include <sys/pci/pci_regs.h> 47 #include <sys/pci/pci_simba.h> 48 #include <sys/ddi.h> 49 #include <sys/sunddi.h> 50 #include <sys/sunndi.h> 51 #include <sys/promif.h> /* prom_printf */ 52 #include <sys/open.h> 53 #include <sys/stat.h> 54 #include <sys/file.h> 55 56 #if defined(DEBUG) && !defined(lint) 57 static uint_t simba_debug_flags = 0; 58 #define D_IDENTIFY 0x00000001 59 #define D_ATTACH 0x00000002 60 #define D_DETACH 0x00000004 61 #define D_MAP 0x00000008 62 #define D_CTLOPS 0x00000010 63 #define D_G_ISPEC 0x00000020 64 #define D_A_ISPEC 0x00000040 65 #define D_INIT_CLD 0x00400000 66 #define D_FAULT 0x00000080 67 68 #define DEBUG0(f, s) if ((f)& simba_debug_flags) \ 69 prom_printf("simba: " s "\n") 70 71 #define DEBUG1(f, s, a) if ((f)& simba_debug_flags) \ 72 prom_printf("simba: " s "\n", a) 73 74 #define DEBUG2(f, s, a, b) if ((f)& simba_debug_flags) \ 75 prom_printf("simba: " s "\n", a, b) 76 77 #define DEBUG3(f, s, a, b, c) if ((f)& simba_debug_flags) \ 78 prom_printf("simba: " s "\n", a, b, c) 79 80 #define DEBUG4(f, s, a, b, c, d) if ((f)& simba_debug_flags) \ 81 prom_printf("simba: " s "\n", a, b, c, d) 82 83 #define DEBUG5(f, s, a, b, c, d, e) if ((f)& simba_debug_flags) \ 84 prom_printf("simba: " s "\n", a, b, c, d, e) 85 86 #define DEBUG6(f, s, a, b, c, d, e, ff) if ((f)& simba_debug_flags) \ 87 prom_printf("simba: " s "\n", a, b, c, d, e, ff) 88 89 #else 90 91 #define DEBUG0(f, s) 92 #define DEBUG1(f, s, a) 93 #define DEBUG2(f, s, a, b) 94 #define DEBUG3(f, s, a, b, c) 95 #define DEBUG4(f, s, a, b, c, d) 96 #define DEBUG5(f, s, a, b, c, d, e) 97 #define DEBUG6(f, s, a, b, c, d, e, ff) 98 99 #endif 100 101 /* 102 * The variable controls the default setting of the command register 103 * for pci devices. See simba_initchild() for details. 104 */ 105 static ushort_t simba_command_default = PCI_COMM_SERR_ENABLE | 106 PCI_COMM_WAIT_CYC_ENAB | 107 PCI_COMM_PARITY_DETECT | 108 PCI_COMM_ME | 109 PCI_COMM_MAE | 110 PCI_COMM_IO; 111 112 static int simba_bus_map(dev_info_t *, dev_info_t *, ddi_map_req_t *, 113 off_t, off_t, caddr_t *); 114 static int simba_ctlops(dev_info_t *, dev_info_t *, ddi_ctl_enum_t, 115 void *, void *); 116 static int simba_fm_init_child(dev_info_t *dip, dev_info_t *tdip, int cap, 117 ddi_iblock_cookie_t *ibc); 118 static void simba_bus_enter(dev_info_t *dip, ddi_acc_handle_t handle); 119 static void simba_bus_exit(dev_info_t *dip, ddi_acc_handle_t handle); 120 121 struct bus_ops simba_bus_ops = { 122 BUSO_REV, 123 simba_bus_map, 124 0, 125 0, 126 0, 127 i_ddi_map_fault, 128 ddi_dma_map, 129 ddi_dma_allochdl, 130 ddi_dma_freehdl, 131 ddi_dma_bindhdl, 132 ddi_dma_unbindhdl, 133 ddi_dma_flush, 134 ddi_dma_win, 135 ddi_dma_mctl, 136 simba_ctlops, 137 ddi_bus_prop_op, 138 ndi_busop_get_eventcookie, 139 ndi_busop_add_eventcall, 140 ndi_busop_remove_eventcall, 141 ndi_post_event, 142 0, 143 0, 144 0, 145 simba_fm_init_child, 146 NULL, 147 simba_bus_enter, 148 simba_bus_exit, 149 0, 150 i_ddi_intr_ops 151 }; 152 153 static int simba_open(dev_t *devp, int flags, int otyp, cred_t *credp); 154 static int simba_close(dev_t dev, int flags, int otyp, cred_t *credp); 155 static int simba_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, 156 cred_t *credp, int *rvalp); 157 158 static struct cb_ops simba_cb_ops = { 159 simba_open, /* open */ 160 simba_close, /* close */ 161 nulldev, /* strategy */ 162 nulldev, /* print */ 163 nulldev, /* dump */ 164 nulldev, /* read */ 165 nulldev, /* write */ 166 simba_ioctl, /* ioctl */ 167 nodev, /* devmap */ 168 nodev, /* mmap */ 169 nodev, /* segmap */ 170 nochpoll, /* poll */ 171 ddi_prop_op, /* cb_prop_op */ 172 NULL, /* streamtab */ 173 D_NEW | D_MP | D_HOTPLUG, /* Driver compatibility flag */ 174 CB_REV, /* rev */ 175 nodev, /* int (*cb_aread)() */ 176 nodev /* int (*cb_awrite)() */ 177 }; 178 179 static int simba_probe(dev_info_t *); 180 static int simba_attach(dev_info_t *devi, ddi_attach_cmd_t cmd); 181 static int simba_detach(dev_info_t *devi, ddi_detach_cmd_t cmd); 182 static int simba_info(dev_info_t *dip, ddi_info_cmd_t infocmd, 183 void *arg, void **result); 184 185 struct dev_ops simba_ops = { 186 DEVO_REV, /* devo_rev */ 187 0, /* refcnt */ 188 simba_info, /* info */ 189 nulldev, /* identify */ 190 simba_probe, /* probe */ 191 simba_attach, /* attach */ 192 simba_detach, /* detach */ 193 nulldev, /* reset */ 194 &simba_cb_ops, /* driver operations */ 195 &simba_bus_ops /* bus operations */ 196 197 }; 198 199 /* 200 * Module linkage information for the kernel. 201 */ 202 203 static struct modldrv modldrv = { 204 &mod_driverops, /* Type of module */ 205 "SIMBA PCI to PCI bridge nexus driver %I%", 206 &simba_ops, /* driver ops */ 207 }; 208 209 static struct modlinkage modlinkage = { 210 MODREV_1, 211 (void *)&modldrv, 212 NULL 213 }; 214 215 /* 216 * Simba specific error state structure 217 */ 218 struct simba_errstate { 219 char *error; 220 ushort_t pci_cfg_stat; 221 ushort_t pci_cfg_sec_stat; 222 uint64_t afsr; 223 uint64_t afar; 224 int bridge_secondary; 225 }; 226 227 struct simba_cfg_state { 228 dev_info_t *dip; 229 ushort_t command; 230 uchar_t cache_line_size; 231 uchar_t latency_timer; 232 uchar_t header_type; 233 uchar_t bus_number; 234 uchar_t sec_bus_number; 235 uchar_t sub_bus_number; 236 uchar_t sec_latency_timer; 237 ushort_t bridge_control; 238 }; 239 240 /* 241 * soft state pointer and structure template: 242 */ 243 static void *simba_state; 244 245 typedef struct { 246 247 dev_info_t *dip; 248 249 /* 250 * configuration register state for the bus: 251 */ 252 ddi_acc_handle_t config_handle; 253 uchar_t simba_cache_line_size; 254 uchar_t simba_latency_timer; 255 256 /* 257 * cpr support: 258 */ 259 uint_t config_state_index; 260 struct simba_cfg_state *simba_config_state_p; 261 ddi_iblock_cookie_t fm_ibc; 262 int fm_cap; 263 kmutex_t simba_mutex; 264 uint_t simba_soft_state; 265 #define SIMBA_SOFT_STATE_CLOSED 0x00 266 #define SIMBA_SOFT_STATE_OPEN 0x01 267 #define SIMBA_SOFT_STATE_OPEN_EXCL 0x02 268 } simba_devstate_t; 269 270 /* 271 * The following variable enables a workaround for the following obp bug: 272 * 273 * 1234181 - obp should set latency timer registers in pci 274 * configuration header 275 * 276 * Until this bug gets fixed in the obp, the following workaround should 277 * be enabled. 278 */ 279 static uint_t simba_set_latency_timer_register = 1; 280 281 /* 282 * The following variable enables a workaround for an obp bug to be 283 * submitted. A bug requesting a workaround fof this problem has 284 * been filed: 285 * 286 * 1235094 - need workarounds on positron nexus drivers to set cache 287 * line size registers 288 * 289 * Until this bug gets fixed in the obp, the following workaround should 290 * be enabled. 291 */ 292 static uint_t simba_set_cache_line_size_register = 1; 293 294 295 /* 296 * forward function declarations: 297 */ 298 static void simba_uninitchild(dev_info_t *); 299 static int simba_initchild(dev_info_t *child); 300 static void simba_save_config_regs(simba_devstate_t *simba_p); 301 static void simba_restore_config_regs(simba_devstate_t *simba_p); 302 static int simba_err_callback(dev_info_t *dip, ddi_fm_error_t *derr, 303 const void *impl_data); 304 305 int 306 _init(void) 307 { 308 int e; 309 310 DEBUG0(D_ATTACH, "_init() installing module...\n"); 311 if ((e = ddi_soft_state_init(&simba_state, sizeof (simba_devstate_t), 312 1)) == 0 && (e = mod_install(&modlinkage)) != 0) 313 ddi_soft_state_fini(&simba_state); 314 315 DEBUG0(D_ATTACH, "_init() module installed\n"); 316 return (e); 317 } 318 319 int 320 _fini(void) 321 { 322 int e; 323 DEBUG0(D_ATTACH, "_fini() removing module...\n"); 324 if ((e = mod_remove(&modlinkage)) == 0) 325 ddi_soft_state_fini(&simba_state); 326 return (e); 327 } 328 329 int 330 _info(struct modinfo *modinfop) 331 { 332 DEBUG0(D_ATTACH, "_info() called.\n"); 333 return (mod_info(&modlinkage, modinfop)); 334 } 335 336 /*ARGSUSED*/ 337 static int 338 simba_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 339 { 340 simba_devstate_t *simba_p; /* per simba state pointer */ 341 int instance; 342 343 instance = getminor((dev_t)arg); 344 simba_p = (simba_devstate_t *)ddi_get_soft_state(simba_state, 345 instance); 346 347 switch (infocmd) { 348 default: 349 return (DDI_FAILURE); 350 351 case DDI_INFO_DEVT2INSTANCE: 352 *result = (void *)(uintptr_t)instance; 353 return (DDI_SUCCESS); 354 355 case DDI_INFO_DEVT2DEVINFO: 356 if (simba_p == NULL) 357 return (DDI_FAILURE); 358 *result = (void *)simba_p->dip; 359 return (DDI_SUCCESS); 360 } 361 } 362 363 /*ARGSUSED*/ 364 static int 365 simba_probe(register dev_info_t *devi) 366 { 367 DEBUG0(D_ATTACH, "simba_probe() called.\n"); 368 return (DDI_PROBE_SUCCESS); 369 } 370 371 /*ARGSUSED*/ 372 static int 373 simba_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 374 { 375 int instance; 376 simba_devstate_t *simba; 377 ddi_fm_error_t derr; 378 379 switch (cmd) { 380 case DDI_ATTACH: 381 382 DEBUG1(D_ATTACH, "attach(%p) ATTACH\n", devi); 383 384 /* 385 * Make sure the "device_type" property exists. 386 */ 387 (void) ddi_prop_update_string(DDI_DEV_T_NONE, devi, 388 "device_type", "pci"); 389 390 /* 391 * Allocate and get soft state structure. 392 */ 393 instance = ddi_get_instance(devi); 394 if (ddi_soft_state_zalloc(simba_state, instance) != DDI_SUCCESS) 395 return (DDI_FAILURE); 396 simba = (simba_devstate_t *)ddi_get_soft_state(simba_state, 397 instance); 398 simba->dip = devi; 399 mutex_init(&simba->simba_mutex, NULL, MUTEX_DRIVER, NULL); 400 simba->simba_soft_state = SIMBA_SOFT_STATE_CLOSED; 401 402 /* 403 * create minor node for devctl interfaces 404 */ 405 if (ddi_create_minor_node(devi, "devctl", S_IFCHR, instance, 406 DDI_NT_NEXUS, 0) != DDI_SUCCESS) { 407 mutex_destroy(&simba->simba_mutex); 408 ddi_soft_state_free(simba_state, instance); 409 return (DDI_FAILURE); 410 } 411 412 if (pci_config_setup(devi, &simba->config_handle) != 413 DDI_SUCCESS) { 414 ddi_remove_minor_node(devi, "devctl"); 415 mutex_destroy(&simba->simba_mutex); 416 ddi_soft_state_free(simba_state, instance); 417 return (DDI_FAILURE); 418 } 419 420 /* 421 * Simba cache line size is 64 bytes and hardwired. 422 */ 423 simba->simba_cache_line_size = 424 pci_config_get8(simba->config_handle, 425 PCI_CONF_CACHE_LINESZ); 426 simba->simba_latency_timer = 427 pci_config_get8(simba->config_handle, 428 PCI_CONF_LATENCY_TIMER); 429 430 /* simba specific, clears up the pri/sec status registers */ 431 pci_config_put16(simba->config_handle, 0x6, 0xffff); 432 pci_config_put16(simba->config_handle, 0x1e, 0xffff); 433 434 DEBUG2(D_ATTACH, "simba_attach(): clsz=%x, lt=%x\n", 435 simba->simba_cache_line_size, 436 simba->simba_latency_timer); 437 438 /* 439 * Initialize FMA support 440 */ 441 simba->fm_cap = DDI_FM_EREPORT_CAPABLE | DDI_FM_ERRCB_CAPABLE | 442 DDI_FM_ACCCHK_CAPABLE | DDI_FM_DMACHK_CAPABLE; 443 444 /* 445 * Call parent to get it's capablity 446 */ 447 ddi_fm_init(devi, &simba->fm_cap, &simba->fm_ibc); 448 449 ASSERT((simba->fm_cap & DDI_FM_ERRCB_CAPABLE) && 450 (simba->fm_cap & DDI_FM_EREPORT_CAPABLE)); 451 452 pci_ereport_setup(devi); 453 454 /* 455 * clear any outstanding error bits 456 */ 457 bzero(&derr, sizeof (ddi_fm_error_t)); 458 derr.fme_version = DDI_FME_VERSION; 459 derr.fme_flag = DDI_FM_ERR_EXPECTED; 460 pci_ereport_post(devi, &derr, NULL); 461 pci_bdg_ereport_post(devi, &derr, NULL); 462 463 ddi_fm_handler_register(devi, simba_err_callback, simba); 464 465 ddi_report_dev(devi); 466 DEBUG0(D_ATTACH, "attach(): ATTACH done\n"); 467 return (DDI_SUCCESS); 468 469 case DDI_RESUME: 470 471 /* 472 * Get the soft state structure for the bridge. 473 */ 474 simba = (simba_devstate_t *) 475 ddi_get_soft_state(simba_state, ddi_get_instance(devi)); 476 simba_restore_config_regs(simba); 477 return (DDI_SUCCESS); 478 } 479 return (DDI_FAILURE); 480 } 481 482 /*ARGSUSED*/ 483 static int 484 simba_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) 485 { 486 simba_devstate_t *simba; 487 simba = (simba_devstate_t *) 488 ddi_get_soft_state(simba_state, ddi_get_instance(devi)); 489 490 switch (cmd) { 491 case DDI_DETACH: 492 DEBUG0(D_DETACH, "detach() called\n"); 493 ddi_fm_handler_unregister(devi); 494 pci_ereport_teardown(devi); 495 ddi_fm_fini(devi); 496 pci_config_teardown(&simba->config_handle); 497 (void) ddi_prop_remove(DDI_DEV_T_NONE, devi, "device_type"); 498 ddi_remove_minor_node(devi, "devctl"); 499 mutex_destroy(&simba->simba_mutex); 500 ddi_soft_state_free(simba_state, ddi_get_instance(devi)); 501 return (DDI_SUCCESS); 502 503 case DDI_SUSPEND: 504 simba_save_config_regs(simba); 505 return (DDI_SUCCESS); 506 } 507 return (DDI_FAILURE); 508 } 509 510 /*ARGSUSED*/ 511 static int 512 simba_bus_map(dev_info_t *dip, dev_info_t *rdip, ddi_map_req_t *mp, 513 off_t offset, off_t len, caddr_t *vaddrp) 514 { 515 register dev_info_t *pdip; 516 517 DEBUG3(D_MAP, "simba_bus_map(): dip=%p, rdip=%p, mp=%p", dip, rdip, mp); 518 DEBUG3(D_MAP, "simba_bus_map(): offset=%lx, len=%lx, vaddrp=%p", 519 offset, len, vaddrp); 520 521 pdip = (dev_info_t *)DEVI(dip)->devi_parent; 522 return ((DEVI(pdip)->devi_ops->devo_bus_ops->bus_map) 523 (pdip, rdip, mp, offset, len, vaddrp)); 524 } 525 526 /* 527 * Registered error handling callback with our parent 528 */ 529 static int 530 simba_err_callback(dev_info_t *dip, ddi_fm_error_t *derr, const void *impl_data) 531 { 532 simba_devstate_t *simba = (simba_devstate_t *)impl_data; 533 struct simba_errstate simba_err; 534 int ret = 0; 535 536 bzero(&simba_err, sizeof (struct simba_errstate)); 537 simba_err.afsr = pci_config_get64(simba->config_handle, 0xe8); 538 simba_err.afar = pci_config_get64(simba->config_handle, 0xf0); 539 derr->fme_ena = fm_ena_generate(0, FM_ENA_FMT1); 540 541 pci_ereport_post(dip, derr, &simba_err.pci_cfg_stat); 542 pci_bdg_ereport_post(dip, derr, &simba_err.pci_cfg_sec_stat); 543 ret = pci_bdg_check_status(dip, derr, simba_err.pci_cfg_stat, 544 simba_err.pci_cfg_sec_stat); 545 546 DEBUG6(D_FAULT, "%s-%d: cleaning up fault bits %x %x %x.%8x\n", 547 ddi_driver_name(simba->dip), 548 ddi_get_instance(simba->dip), simba_err.pci_cfg_stat, 549 simba_err.pci_cfg_sec_stat, 550 (uint_t)(simba_err.afsr >> 32), 551 (uint_t)simba_err.afsr); 552 pci_config_put64(simba->config_handle, 0xe8, simba_err.afsr); 553 554 return (ret); 555 } 556 557 #if defined(DEBUG) && !defined(lint) 558 static char *ops[] = 559 { 560 "DDI_CTLOPS_DMAPMAPC", 561 "DDI_CTLOPS_INITCHILD", 562 "DDI_CTLOPS_UNINITCHILD", 563 "DDI_CTLOPS_REPORTDEV", 564 "DDI_CTLOPS_REPORTINT", 565 "DDI_CTLOPS_REGSIZE", 566 "DDI_CTLOPS_NREGS", 567 "DDI_CTLOPS_RESERVED0", 568 "DDI_CTLOPS_SIDDEV", 569 "DDI_CTLOPS_SLAVEONLY", 570 "DDI_CTLOPS_AFFINITY", 571 "DDI_CTLOPS_IOMIN", 572 "DDI_CTLOPS_PTOB", 573 "DDI_CTLOPS_BTOP", 574 "DDI_CTLOPS_BTOPR", 575 "DDI_CTLOPS_RESERVED1", 576 "DDI_CTLOPS_RESERVED2", 577 "DDI_CTLOPS_RESERVED3", 578 "DDI_CTLOPS_RESERVED4", 579 "DDI_CTLOPS_RESERVED5", 580 "DDI_CTLOPS_DVMAPAGESIZE", 581 "DDI_CTLOPS_POWER", 582 "DDI_CTLOPS_ATTACH", 583 "DDI_CTLOPS_DETACH", 584 "DDI_CTLOPS_POKE", 585 "DDI_CTLOPS_PEEK" 586 }; 587 #endif 588 589 /*ARGSUSED*/ 590 static int 591 simba_ctlops(dev_info_t *dip, dev_info_t *rdip, ddi_ctl_enum_t ctlop, 592 void *arg, void *result) 593 { 594 int reglen; 595 int rn; 596 int totreg; 597 pci_regspec_t *drv_regp; 598 599 DEBUG6(D_CTLOPS, 600 "simba_ctlops(): dip=%p rdip=%p ctlop=%x-%s arg=%p result=%p", 601 dip, rdip, ctlop, ctlop < (sizeof (ops) / sizeof (ops[0])) ? 602 ops[ctlop] : "Unknown", arg, result); 603 604 switch (ctlop) { 605 case DDI_CTLOPS_REPORTDEV: 606 if (rdip == (dev_info_t *)0) 607 return (DDI_FAILURE); 608 cmn_err(CE_CONT, "?PCI-device: %s@%s, %s%d\n", 609 ddi_node_name(rdip), ddi_get_name_addr(rdip), 610 ddi_driver_name(rdip), 611 ddi_get_instance(rdip)); 612 return (DDI_SUCCESS); 613 614 case DDI_CTLOPS_INITCHILD: 615 return (simba_initchild((dev_info_t *)arg)); 616 617 case DDI_CTLOPS_UNINITCHILD: 618 simba_uninitchild((dev_info_t *)arg); 619 return (DDI_SUCCESS); 620 621 case DDI_CTLOPS_SIDDEV: 622 return (DDI_SUCCESS); 623 624 case DDI_CTLOPS_REGSIZE: 625 case DDI_CTLOPS_NREGS: 626 if (rdip == (dev_info_t *)0) 627 return (DDI_FAILURE); 628 break; 629 630 default: 631 DEBUG0(D_CTLOPS, "simba_ctlops(): calling ddi_ctlops()"); 632 return (ddi_ctlops(dip, rdip, ctlop, arg, result)); 633 } 634 635 *(int *)result = 0; 636 if (ddi_getlongprop(DDI_DEV_T_ANY, rdip, 637 DDI_PROP_DONTPASS | DDI_PROP_CANSLEEP, "reg", 638 (caddr_t)&drv_regp, ®len) != DDI_SUCCESS) 639 return (DDI_FAILURE); 640 641 totreg = reglen / sizeof (pci_regspec_t); 642 if (ctlop == DDI_CTLOPS_NREGS) 643 *(int *)result = totreg; 644 else if (ctlop == DDI_CTLOPS_REGSIZE) { 645 rn = *(int *)arg; 646 if (rn >= totreg) { 647 kmem_free(drv_regp, reglen); 648 return (DDI_FAILURE); 649 } 650 *(off_t *)result = drv_regp[rn].pci_size_low | 651 ((uint64_t)drv_regp[rn].pci_size_hi << 32); 652 } 653 654 kmem_free(drv_regp, reglen); 655 DEBUG1(D_CTLOPS, "simba_ctlops(): *result=%lx\n", *(off_t *)result); 656 return (DDI_SUCCESS); 657 } 658 659 static int 660 simba_name_child(dev_info_t *child, char *name, int namelen) 661 { 662 uint_t n, slot, func; 663 pci_regspec_t *pci_rp; 664 665 if (ndi_dev_is_persistent_node(child) == 0) { 666 char **unit_addr; 667 668 /* name .conf nodes by "unit-address" property" */ 669 if (ddi_prop_lookup_string_array(DDI_DEV_T_ANY, child, 670 DDI_PROP_DONTPASS, "unit-address", &unit_addr, &n) != 671 DDI_PROP_SUCCESS) { 672 cmn_err(CE_WARN, "cannot name node from %s.conf", 673 ddi_driver_name(child)); 674 return (DDI_FAILURE); 675 } 676 if (n != 1 || *unit_addr == NULL || **unit_addr == 0) { 677 cmn_err(CE_WARN, "unit-address property in %s.conf" 678 " not well-formed", ddi_driver_name(child)); 679 ddi_prop_free(unit_addr); 680 return (DDI_FAILURE); 681 } 682 683 (void) snprintf(name, namelen, "%s", *unit_addr); 684 ddi_prop_free(unit_addr); 685 return (DDI_SUCCESS); 686 } 687 688 /* name hardware nodes by "reg" property */ 689 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child, 0, "reg", 690 (int **)&pci_rp, &n) != DDI_SUCCESS) 691 return (DDI_FAILURE); 692 693 /* get the device identifications */ 694 slot = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 695 func = PCI_REG_FUNC_G(pci_rp->pci_phys_hi); 696 697 if (func != 0) 698 (void) snprintf(name, namelen, "%x,%x", slot, func); 699 else 700 (void) snprintf(name, namelen, "%x", slot); 701 702 ddi_prop_free(pci_rp); 703 return (DDI_SUCCESS); 704 } 705 706 static int 707 simba_initchild(dev_info_t *child) 708 { 709 char name[MAXNAMELEN]; 710 int i; 711 ddi_acc_handle_t config_handle; 712 ushort_t command_preserve, command; 713 uchar_t header_type; 714 uchar_t min_gnt, latency_timer; 715 simba_devstate_t *simba; 716 uint_t n; 717 718 DEBUG1(D_INIT_CLD, "simba_initchild(): child=%p\n", child); 719 720 /* 721 * Pseudo nodes indicate a prototype node with per-instance 722 * properties to be merged into the real h/w device node. 723 * The interpretation of the unit-address is DD[,F] 724 * where DD is the device id and F is the function. 725 */ 726 if (ndi_dev_is_persistent_node(child) == 0) { 727 extern int pci_allow_pseudo_children; 728 pci_regspec_t *pci_rp; 729 730 if (ddi_getlongprop(DDI_DEV_T_ANY, child, 731 DDI_PROP_DONTPASS, "reg", (caddr_t)&pci_rp, &i) == 732 DDI_SUCCESS) { 733 cmn_err(CE_WARN, 734 "cannot merge prototype from %s.conf", 735 ddi_driver_name(child)); 736 kmem_free(pci_rp, i); 737 return (DDI_NOT_WELL_FORMED); 738 } 739 740 if (simba_name_child(child, name, MAXNAMELEN) != DDI_SUCCESS) 741 return (DDI_NOT_WELL_FORMED); 742 743 ddi_set_name_addr(child, name); 744 ddi_set_parent_data(child, NULL); 745 746 /* 747 * Try to merge the properties from this prototype 748 * node into real h/w nodes. 749 */ 750 if (ndi_merge_node(child, simba_name_child) == DDI_SUCCESS) { 751 /* 752 * Merged ok - return failure to remove the node. 753 */ 754 simba_uninitchild(child); 755 return (DDI_FAILURE); 756 } 757 758 /* workaround for ddivs to run under PCI */ 759 if (pci_allow_pseudo_children) 760 return (DDI_SUCCESS); 761 762 /* 763 * The child was not merged into a h/w node, 764 * but there's not much we can do with it other 765 * than return failure to cause the node to be removed. 766 */ 767 cmn_err(CE_WARN, "!%s@%s: %s.conf properties not merged", 768 ddi_driver_name(child), ddi_get_name_addr(child), 769 ddi_driver_name(child)); 770 simba_uninitchild(child); 771 return (DDI_NOT_WELL_FORMED); 772 } 773 774 /* 775 * Initialize real h/w nodes 776 */ 777 if (simba_name_child(child, name, MAXNAMELEN) != DDI_SUCCESS) 778 return (DDI_FAILURE); 779 780 ddi_set_name_addr(child, name); 781 ddi_set_parent_data(child, NULL); 782 783 if (pci_config_setup(child, &config_handle) != DDI_SUCCESS) { 784 simba_uninitchild(child); 785 return (DDI_FAILURE); 786 } 787 788 DEBUG0(D_INIT_CLD, "simba_initchild(): pci_config_setup success!\n"); 789 790 /* 791 * Determine the configuration header type. 792 */ 793 header_type = pci_config_get8(config_handle, PCI_CONF_HEADER); 794 795 /* 796 * Support for the "command-preserve" property. 797 */ 798 command_preserve = ddi_prop_get_int(DDI_DEV_T_ANY, child, 799 DDI_PROP_DONTPASS, "command-preserve", 0); 800 command = pci_config_get16(config_handle, PCI_CONF_COMM); 801 command &= (command_preserve | PCI_COMM_BACK2BACK_ENAB); 802 command |= (simba_command_default & ~command_preserve); 803 pci_config_put16(config_handle, PCI_CONF_COMM, command); 804 805 /* clean up all PCI child devices status register */ 806 pci_config_put16(config_handle, PCI_CONF_STAT, 0xffff); 807 808 /* 809 * If the device has a primary bus control register then program it 810 * based on the settings in the command register. 811 */ 812 if ((header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) { 813 ushort_t bcr = 814 pci_config_get16(config_handle, PCI_BCNF_BCNTRL); 815 if (simba_command_default & PCI_COMM_PARITY_DETECT) 816 bcr |= PCI_BCNF_BCNTRL_PARITY_ENABLE; 817 if (simba_command_default & PCI_COMM_SERR_ENABLE) 818 bcr |= PCI_BCNF_BCNTRL_SERR_ENABLE; 819 bcr |= PCI_BCNF_BCNTRL_MAST_AB_MODE; 820 pci_config_put8(config_handle, PCI_BCNF_BCNTRL, bcr); 821 } 822 823 simba = (simba_devstate_t *)ddi_get_soft_state(simba_state, 824 ddi_get_instance(ddi_get_parent(child))); 825 /* 826 * Initialize cache-line-size configuration register if needed. 827 */ 828 if (simba_set_cache_line_size_register && 829 ddi_getprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, 830 "cache-line-size", 0) == 0) { 831 pci_config_put8(config_handle, PCI_CONF_CACHE_LINESZ, 832 simba->simba_cache_line_size); 833 n = pci_config_get8(config_handle, PCI_CONF_CACHE_LINESZ); 834 if (n != 0) 835 (void) ndi_prop_update_int(DDI_DEV_T_NONE, child, 836 "cache-line-size", n); 837 } 838 839 /* 840 * Initialize latency timer configuration registers if needed. 841 */ 842 if (simba_set_latency_timer_register && 843 ddi_getprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, 844 "latency-timer", 0) == 0) { 845 846 if ((header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) { 847 latency_timer = simba->simba_latency_timer; 848 pci_config_put8(config_handle, PCI_BCNF_LATENCY_TIMER, 849 simba->simba_latency_timer); 850 } else { 851 min_gnt = pci_config_get8(config_handle, 852 PCI_CONF_MIN_G); 853 latency_timer = min_gnt * 8; 854 } 855 pci_config_put8(config_handle, PCI_CONF_LATENCY_TIMER, 856 latency_timer); 857 n = pci_config_get8(config_handle, PCI_CONF_LATENCY_TIMER); 858 if (n != 0) 859 (void) ndi_prop_update_int(DDI_DEV_T_NONE, child, 860 "latency-timer", n); 861 } 862 863 pci_config_teardown(&config_handle); 864 DEBUG0(D_INIT_CLD, "simba_initchild(): pci_config_teardown called\n"); 865 return (DDI_SUCCESS); 866 } 867 868 static void 869 simba_uninitchild(dev_info_t *dip) 870 { 871 ddi_set_name_addr(dip, NULL); 872 873 /* 874 * Strip the node to properly convert it back to prototype form 875 */ 876 impl_rem_dev_props(dip); 877 } 878 879 /* 880 * simba_save_config_regs 881 * 882 * This routine saves the state of the configuration registers of all 883 * the child nodes of each PBM. 884 * 885 * used by: simba_detach() on suspends 886 * 887 * return value: none 888 */ 889 static void 890 simba_save_config_regs(simba_devstate_t *simba_p) 891 { 892 int i; 893 dev_info_t *dip; 894 ddi_acc_handle_t ch; 895 struct simba_cfg_state *statep; 896 897 for (i = 0, dip = ddi_get_child(simba_p->dip); dip != NULL; 898 dip = ddi_get_next_sibling(dip)) { 899 if (i_ddi_devi_attached(dip)) 900 i++; 901 } 902 if (!i) 903 return; 904 simba_p->simba_config_state_p = 905 kmem_zalloc(i * sizeof (struct simba_cfg_state), KM_NOSLEEP); 906 if (!simba_p->simba_config_state_p) { 907 cmn_err(CE_WARN, "not enough memrory to save simba child\n"); 908 return; 909 } 910 simba_p->config_state_index = i; 911 912 for (statep = simba_p->simba_config_state_p, 913 dip = ddi_get_child(simba_p->dip); 914 dip != NULL; 915 dip = ddi_get_next_sibling(dip)) { 916 917 if (!i_ddi_devi_attached(dip)) { 918 DEBUG4(D_DETACH, "%s%d: skipping unattached %s%d\n", 919 ddi_driver_name(simba_p->dip), 920 ddi_get_instance(simba_p->dip), 921 ddi_driver_name(dip), 922 ddi_get_instance(dip)); 923 continue; 924 } 925 926 DEBUG4(D_DETACH, "%s%d: saving regs for %s%d\n", 927 ddi_driver_name(simba_p->dip), 928 ddi_get_instance(simba_p->dip), 929 ddi_driver_name(dip), 930 ddi_get_instance(dip)); 931 932 if (pci_config_setup(dip, &ch) != DDI_SUCCESS) { 933 DEBUG4(D_DETACH, "%s%d: can't config space for %s%d\n", 934 ddi_driver_name(simba_p->dip), 935 ddi_get_instance(simba_p->dip), 936 ddi_driver_name(dip), 937 ddi_get_instance(dip)); 938 continue; 939 } 940 941 DEBUG3(D_DETACH, "%s%d: saving child dip=%p\n", 942 ddi_driver_name(simba_p->dip), 943 ddi_get_instance(simba_p->dip), 944 dip); 945 946 statep->dip = dip; 947 statep->command = pci_config_get16(ch, PCI_CONF_COMM); 948 statep->header_type = pci_config_get8(ch, PCI_CONF_HEADER); 949 if ((statep->header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) 950 statep->bridge_control = 951 pci_config_get16(ch, PCI_BCNF_BCNTRL); 952 statep->cache_line_size = 953 pci_config_get8(ch, PCI_CONF_CACHE_LINESZ); 954 statep->latency_timer = 955 pci_config_get8(ch, PCI_CONF_LATENCY_TIMER); 956 if ((statep->header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) 957 statep->sec_latency_timer = 958 pci_config_get8(ch, PCI_BCNF_LATENCY_TIMER); 959 /* 960 * Simba specific. 961 */ 962 if (pci_config_get16(ch, PCI_CONF_VENID) == PCI_SIMBA_VENID && 963 pci_config_get16(ch, PCI_CONF_DEVID) == PCI_SIMBA_DEVID) { 964 965 statep->bus_number = 966 pci_config_get8(ch, PCI_BCNF_PRIBUS); 967 statep->sec_bus_number = 968 pci_config_get8(ch, PCI_BCNF_SECBUS); 969 statep->sub_bus_number = 970 pci_config_get8(ch, PCI_BCNF_SUBBUS); 971 statep->bridge_control = 972 pci_config_get16(ch, PCI_BCNF_BCNTRL); 973 } 974 pci_config_teardown(&ch); 975 statep++; 976 } 977 } 978 979 980 /* 981 * simba_restore_config_regs 982 * 983 * This routine restores the state of the configuration registers of all 984 * the child nodes of each PBM. 985 * 986 * used by: simba_attach() on resume 987 * 988 * return value: none 989 */ 990 static void 991 simba_restore_config_regs(simba_devstate_t *simba_p) 992 { 993 int i; 994 dev_info_t *dip; 995 ddi_acc_handle_t ch; 996 struct simba_cfg_state *statep = simba_p->simba_config_state_p; 997 if (!simba_p->config_state_index) 998 return; 999 1000 for (i = 0; i < simba_p->config_state_index; i++, statep++) { 1001 dip = statep->dip; 1002 if (!dip) { 1003 cmn_err(CE_WARN, 1004 "%s%d: skipping bad dev info (%d)\n", 1005 ddi_driver_name(simba_p->dip), 1006 ddi_get_instance(simba_p->dip), 1007 i); 1008 continue; 1009 } 1010 1011 DEBUG5(D_ATTACH, "%s%d: restoring regs for %p-%s%d\n", 1012 ddi_driver_name(simba_p->dip), 1013 ddi_get_instance(simba_p->dip), 1014 dip, 1015 ddi_driver_name(dip), 1016 ddi_get_instance(dip)); 1017 1018 if (pci_config_setup(dip, &ch) != DDI_SUCCESS) { 1019 DEBUG4(D_ATTACH, "%s%d: can't config space for %s%d\n", 1020 ddi_driver_name(simba_p->dip), 1021 ddi_get_instance(simba_p->dip), 1022 ddi_driver_name(dip), 1023 ddi_get_instance(dip)); 1024 continue; 1025 } 1026 pci_config_put16(ch, PCI_CONF_COMM, statep->command); 1027 if ((statep->header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) 1028 pci_config_put16(ch, PCI_BCNF_BCNTRL, 1029 statep->bridge_control); 1030 /* 1031 * Simba specific. 1032 */ 1033 if (pci_config_get16(ch, PCI_CONF_VENID) == PCI_SIMBA_VENID && 1034 pci_config_get16(ch, PCI_CONF_DEVID) == PCI_SIMBA_DEVID) { 1035 pci_config_put8(ch, PCI_BCNF_PRIBUS, 1036 statep->bus_number); 1037 pci_config_put8(ch, PCI_BCNF_SECBUS, 1038 statep->sec_bus_number); 1039 pci_config_put8(ch, PCI_BCNF_SUBBUS, 1040 statep->sub_bus_number); 1041 pci_config_put16(ch, PCI_BCNF_BCNTRL, 1042 statep->bridge_control); 1043 } 1044 1045 pci_config_put8(ch, PCI_CONF_CACHE_LINESZ, 1046 statep->cache_line_size); 1047 pci_config_put8(ch, PCI_CONF_LATENCY_TIMER, 1048 statep->latency_timer); 1049 if ((statep->header_type & PCI_HEADER_TYPE_M) == PCI_HEADER_ONE) 1050 pci_config_put8(ch, PCI_BCNF_LATENCY_TIMER, 1051 statep->sec_latency_timer); 1052 pci_config_teardown(&ch); 1053 } 1054 1055 kmem_free(simba_p->simba_config_state_p, 1056 simba_p->config_state_index * sizeof (struct simba_cfg_state)); 1057 simba_p->simba_config_state_p = NULL; 1058 simba_p->config_state_index = 0; 1059 } 1060 1061 /* ARGSUSED */ 1062 static int 1063 simba_open(dev_t *devp, int flags, int otyp, cred_t *credp) 1064 { 1065 simba_devstate_t *simba_p; 1066 1067 /* 1068 * Make sure the open is for the right file type. 1069 */ 1070 if (otyp != OTYP_CHR) 1071 return (EINVAL); 1072 1073 /* 1074 * Get the soft state structure for the device. 1075 */ 1076 simba_p = (simba_devstate_t *)ddi_get_soft_state(simba_state, 1077 getminor(*devp)); 1078 if (simba_p == NULL) 1079 return (ENXIO); 1080 1081 /* 1082 * Handle the open by tracking the device state. 1083 */ 1084 mutex_enter(&simba_p->simba_mutex); 1085 if (flags & FEXCL) { 1086 if (simba_p->simba_soft_state != SIMBA_SOFT_STATE_CLOSED) { 1087 mutex_exit(&simba_p->simba_mutex); 1088 return (EBUSY); 1089 } 1090 simba_p->simba_soft_state = SIMBA_SOFT_STATE_OPEN_EXCL; 1091 } else { 1092 if (simba_p->simba_soft_state == SIMBA_SOFT_STATE_OPEN_EXCL) { 1093 mutex_exit(&simba_p->simba_mutex); 1094 return (EBUSY); 1095 } 1096 simba_p->simba_soft_state = SIMBA_SOFT_STATE_OPEN; 1097 } 1098 mutex_exit(&simba_p->simba_mutex); 1099 return (0); 1100 } 1101 1102 1103 /* ARGSUSED */ 1104 static int 1105 simba_close(dev_t dev, int flags, int otyp, cred_t *credp) 1106 { 1107 simba_devstate_t *simba_p; 1108 1109 if (otyp != OTYP_CHR) 1110 return (EINVAL); 1111 1112 simba_p = (simba_devstate_t *)ddi_get_soft_state(simba_state, 1113 getminor(dev)); 1114 if (simba_p == NULL) 1115 return (ENXIO); 1116 1117 mutex_enter(&simba_p->simba_mutex); 1118 simba_p->simba_soft_state = SIMBA_SOFT_STATE_CLOSED; 1119 mutex_exit(&simba_p->simba_mutex); 1120 return (0); 1121 } 1122 1123 1124 /* 1125 * simba_ioctl: devctl hotplug controls 1126 */ 1127 /* ARGSUSED */ 1128 static int 1129 simba_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, 1130 int *rvalp) 1131 { 1132 simba_devstate_t *simba_p; 1133 dev_info_t *self; 1134 struct devctl_iocdata *dcp; 1135 uint_t bus_state; 1136 int rv = 0; 1137 1138 simba_p = (simba_devstate_t *)ddi_get_soft_state(simba_state, 1139 getminor(dev)); 1140 if (simba_p == NULL) 1141 return (ENXIO); 1142 1143 self = simba_p->dip; 1144 1145 /* 1146 * We can use the generic implementation for these ioctls 1147 */ 1148 switch (cmd) { 1149 case DEVCTL_DEVICE_GETSTATE: 1150 case DEVCTL_DEVICE_ONLINE: 1151 case DEVCTL_DEVICE_OFFLINE: 1152 case DEVCTL_BUS_GETSTATE: 1153 return (ndi_devctl_ioctl(self, cmd, arg, mode, 0)); 1154 } 1155 1156 /* 1157 * read devctl ioctl data 1158 */ 1159 if (ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS) 1160 return (EFAULT); 1161 1162 switch (cmd) { 1163 1164 case DEVCTL_DEVICE_RESET: 1165 rv = ENOTSUP; 1166 break; 1167 1168 1169 case DEVCTL_BUS_QUIESCE: 1170 if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS) 1171 if (bus_state == BUS_QUIESCED) 1172 break; 1173 (void) ndi_set_bus_state(self, BUS_QUIESCED); 1174 break; 1175 1176 case DEVCTL_BUS_UNQUIESCE: 1177 if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS) 1178 if (bus_state == BUS_ACTIVE) 1179 break; 1180 (void) ndi_set_bus_state(self, BUS_ACTIVE); 1181 break; 1182 1183 case DEVCTL_BUS_RESET: 1184 rv = ENOTSUP; 1185 break; 1186 1187 case DEVCTL_BUS_RESETALL: 1188 rv = ENOTSUP; 1189 break; 1190 1191 default: 1192 rv = ENOTTY; 1193 } 1194 1195 ndi_dc_freehdl(dcp); 1196 return (rv); 1197 } 1198 1199 /* 1200 * Initialize FMA resources for children devices. Called when 1201 * child calls ddi_fm_init(). 1202 */ 1203 /*ARGSUSED*/ 1204 static int 1205 simba_fm_init_child(dev_info_t *dip, dev_info_t *tdip, int cap, 1206 ddi_iblock_cookie_t *ibc) 1207 { 1208 simba_devstate_t *simba_p = ddi_get_soft_state(simba_state, 1209 ddi_get_instance(dip)); 1210 1211 *ibc = simba_p->fm_ibc; 1212 return (simba_p->fm_cap); 1213 } 1214 1215 static void 1216 simba_bus_enter(dev_info_t *dip, ddi_acc_handle_t handle) 1217 { 1218 i_ndi_busop_access_enter(dip, handle); 1219 } 1220 1221 /* ARGSUSED */ 1222 static void 1223 simba_bus_exit(dev_info_t *dip, ddi_acc_handle_t handle) 1224 { 1225 i_ndi_busop_access_exit(dip, handle); 1226 } 1227