1 /* 2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Part of Intel(R) Manageability Engine Interface Linux driver 8 * 9 * Copyright (c) 2003 - 2008 Intel Corp. 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions, and the following disclaimer, 17 * without modification. 18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 19 * substantially similar to the "NO WARRANTY" disclaimer below 20 * ("Disclaimer") and any redistribution must be conditioned upon 21 * including a substantially similar Disclaimer requirement for further 22 * binary redistribution. 23 * 3. Neither the names of the above-listed copyright holders nor the names 24 * of any contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * Alternatively, this software may be distributed under the terms of the 28 * GNU General Public License ("GPL") version 2 as published by the Free 29 * Software Foundation. 30 * 31 * NO WARRANTY 32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 * POSSIBILITY OF SUCH DAMAGES. 43 * 44 */ 45 46 #pragma ident "@(#)heci_main.c 1.7 08/03/07 SMI" 47 48 #include <sys/types.h> 49 #include <sys/note.h> 50 #include <sys/cmn_err.h> 51 #include <sys/conf.h> 52 #include <sys/ddi.h> 53 #include <sys/ddi_impldefs.h> 54 #include <sys/devops.h> 55 #include <sys/instance.h> 56 #include <sys/modctl.h> 57 #include <sys/open.h> 58 #include <sys/stat.h> 59 #include <sys/sunddi.h> 60 #include <sys/file.h> 61 #include <sys/priv.h> 62 #include <sys/systm.h> 63 #include <sys/mkdev.h> 64 #include <sys/list.h> 65 #include <sys/pci.h> 66 #include "heci_data_structures.h" 67 68 #include "heci.h" 69 #include "heci_interface.h" 70 71 #define MAJOR_VERSION 5 72 #define MINOR_VERSION 0 73 #define QUICK_FIX_NUMBER 0 74 #define VER_BUILD 30 75 76 #define str(s) name(s) 77 #define name(s) #s 78 #define HECI_DRIVER_VERSION str(MAJOR_VERSION) "." str(MINOR_VERSION) \ 79 "." str(QUICK_FIX_NUMBER) "." str(VER_BUILD) 80 81 #define HECI_READ_TIMEOUT 45 82 83 #define HECI_DRIVER_NAME "heci" 84 85 /* 86 * heci driver strings 87 */ 88 char heci_driver_name[] = HECI_DRIVER_NAME; 89 char heci_driver_string[] = "Intel(R) Management Engine Interface"; 90 char heci_driver_version[] = HECI_DRIVER_VERSION; 91 char heci_copyright[] = "Copyright (c) 2003 - 2008 Intel Corporation."; 92 93 void * heci_soft_state_p = NULL; 94 95 #ifdef DEBUG 96 int heci_debug = 0; 97 #endif 98 99 /* 100 * Local Function Prototypes 101 */ 102 static int heci_attach(dev_info_t *dip, ddi_attach_cmd_t cmd); 103 static int heci_initialize(dev_info_t *dip, struct iamt_heci_device *device); 104 static int heci_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, 105 void *arg, void **result); 106 static int heci_detach(dev_info_t *dip, ddi_detach_cmd_t cmd); 107 static int heci_quiesce(dev_info_t *dip); 108 static int heci_open(dev_t *devp, int flags, int otyp, cred_t *credp); 109 static int heci_close(dev_t dev, int flag, int otyp, struct cred *cred); 110 static int heci_read(dev_t dev, struct uio *uio_p, cred_t *cred_p); 111 static int heci_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, 112 cred_t *cr, int *rval); 113 static int heci_write(dev_t dev, struct uio *uio_p, struct cred *cred); 114 static int heci_poll(dev_t dev, short events, int anyyet, 115 short *reventsp, struct pollhead **phpp); 116 static struct heci_cb_private *find_read_list_entry( 117 struct iamt_heci_device *dev, 118 struct heci_file_private *file_ext); 119 static inline int heci_fe_same_id(struct heci_file_private *fe1, 120 struct heci_file_private *fe2); 121 122 static void heci_resume(dev_info_t *dip); 123 static int heci_suspend(dev_info_t *dip); 124 static uint16_t g_sus_wd_timeout; 125 126 static struct cb_ops heci_cb_ops = { 127 heci_open, /* open */ 128 heci_close, /* close */ 129 nodev, /* strategy */ 130 nodev, /* print */ 131 nodev, /* dump */ 132 heci_read, /* read */ 133 heci_write, /* write */ 134 heci_ioctl, /* ioctl */ 135 nodev, /* devmap */ 136 nodev, /* mmap */ 137 nodev, /* segmap */ 138 heci_poll, /* poll */ 139 ddi_prop_op, /* cb_prop op */ 140 NULL, /* stream tab */ 141 D_MP /* Driver Compatability Flags */ 142 }; 143 144 static struct dev_ops heci_dev_ops = { 145 DEVO_REV, /* devo_rev */ 146 0, /* refcnt */ 147 heci_getinfo, /* get_dev_info */ 148 nulldev, /* identify */ 149 nulldev, /* probe */ 150 heci_attach, /* attach */ 151 heci_detach, /* detach */ 152 nodev, /* reset */ 153 &heci_cb_ops, /* Driver Ops */ 154 (struct bus_ops *)NULL, /* Bus Operations */ 155 NULL, /* power */ 156 heci_quiesce /* devo_quiesce */ 157 }; 158 159 /* 160 * Module linkage information for the kernel 161 */ 162 163 static struct modldrv modldrv = { 164 &mod_driverops, /* Type of Module = Driver */ 165 heci_driver_string, /* Driver Identifier string. */ 166 &heci_dev_ops, /* Driver Ops. */ 167 }; 168 169 static struct modlinkage modlinkage = { 170 MODREV_1, (void *)&modldrv, NULL 171 }; 172 173 /* 174 * Module Initialization functions. 175 */ 176 177 int 178 _init(void) 179 { 180 int stat; 181 182 /* Allocate soft state */ 183 if ((stat = ddi_soft_state_init(&heci_soft_state_p, 184 sizeof (struct iamt_heci_device), 1)) != DDI_SUCCESS) { 185 return (stat); 186 } 187 188 if ((stat = mod_install(&modlinkage)) != 0) 189 ddi_soft_state_fini(&heci_soft_state_p); 190 191 return (stat); 192 } 193 194 int 195 _info(struct modinfo *infop) 196 { 197 198 return (mod_info(&modlinkage, infop)); 199 } 200 201 int 202 _fini(void) 203 { 204 int stat; 205 206 if ((stat = mod_remove(&modlinkage)) != 0) 207 return (stat); 208 209 ddi_soft_state_fini(&heci_soft_state_p); 210 211 return (stat); 212 } 213 214 /* 215 * heci_attach - Driver Attach Routine 216 */ 217 static int 218 heci_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 219 { 220 int instance, status; 221 struct iamt_heci_device *device; 222 223 switch (cmd) { 224 case DDI_ATTACH: 225 break; 226 case DDI_RESUME: 227 heci_resume(dip); 228 return (DDI_SUCCESS); 229 default: 230 return (DDI_FAILURE); 231 } 232 233 DBG("%s - version %s\n", heci_driver_string, heci_driver_version); 234 DBG("%s\n", heci_copyright); 235 236 instance = ddi_get_instance(dip); /* find out which unit */ 237 status = ddi_soft_state_zalloc(heci_soft_state_p, instance); 238 if (status != DDI_SUCCESS) 239 return (DDI_FAILURE); 240 device = ddi_get_soft_state(heci_soft_state_p, instance); 241 ASSERT(device != NULL); /* can't fail - we only just allocated it */ 242 243 device->dip = dip; 244 245 status = heci_initialize(dip, device); 246 if (status != DDI_SUCCESS) { 247 ddi_soft_state_free(heci_soft_state_p, instance); 248 return (DDI_FAILURE); 249 } 250 251 status = ddi_create_minor_node(dip, "AMT", S_IFCHR, 252 MAKE_MINOR_NUM(HECI_MINOR_NUMBER, instance), 253 DDI_PSEUDO, 0); 254 255 if (status != DDI_SUCCESS) { 256 257 ddi_remove_minor_node(dip, NULL); 258 ddi_soft_state_free(heci_soft_state_p, instance); 259 return (DDI_FAILURE); 260 } 261 262 263 return (status); 264 } 265 266 /* 267 * heci_probe - Device Initialization Routine 268 */ 269 static int 270 heci_initialize(dev_info_t *dip, struct iamt_heci_device *device) 271 { 272 int err; 273 ddi_device_acc_attr_t attr; 274 275 err = ddi_get_iblock_cookie(dip, 0, &device->sc_iblk); 276 if (err != DDI_SUCCESS) { 277 cmn_err(CE_WARN, "heci_probe():" 278 " ddi_get_iblock_cookie() failed\n"); 279 goto end; 280 } 281 /* initializes the heci device structure */ 282 init_heci_device(dip, device); 283 284 attr.devacc_attr_version = DDI_DEVICE_ATTR_V0; 285 attr.devacc_attr_endian_flags = DDI_STRUCTURE_LE_ACC; 286 attr.devacc_attr_dataorder = DDI_STRICTORDER_ACC; 287 288 if (ddi_regs_map_setup(dip, 1, (caddr_t *)&device->mem_addr, 0, 0, 289 &attr, &device->io_handle) != DDI_SUCCESS) { 290 cmn_err(CE_WARN, "heci%d: unable to map PCI regs\n", 291 ddi_get_instance(dip)); 292 goto fini_heci_device; 293 } 294 295 err = ddi_add_intr(dip, 0, &device->sc_iblk, NULL, 296 heci_isr_interrupt, (caddr_t)device); 297 if (err != DDI_SUCCESS) { 298 cmn_err(CE_WARN, "heci_probe(): ddi_add_intr() failed\n"); 299 goto unmap_memory; 300 } 301 302 if (heci_hw_init(device)) { 303 cmn_err(CE_WARN, "init hw failure.\n"); 304 err = -ENODEV; 305 goto release_irq; 306 } 307 (void) heci_initialize_clients(device); 308 if (device->heci_state != HECI_ENABLED) { 309 err = -ENODEV; 310 goto release_hw; 311 } 312 if (device->wd_timeout) 313 device->wd_timer = timeout(heci_wd_timer, device, 1); 314 315 DBG("heci driver initialization successful.\n"); 316 return (0); 317 318 release_hw: 319 /* disable interrupts */ 320 device->host_hw_state = read_heci_register(device, H_CSR); 321 heci_csr_disable_interrupts(device); 322 323 release_irq: 324 ddi_remove_intr(dip, 0, device->sc_iblk); 325 unmap_memory: 326 if (device->mem_addr) 327 ddi_regs_map_free(&device->io_handle); 328 fini_heci_device: 329 fini_heci_device(device); 330 end: 331 cmn_err(CE_WARN, "heci driver initialization failed.\n"); 332 return (err); 333 } 334 335 void 336 heci_destroy_locks(struct iamt_heci_device *device_object) 337 { 338 339 mutex_destroy(&device_object->iamthif_file_ext.file_lock); 340 mutex_destroy(&device_object->iamthif_file_ext.read_io_lock); 341 mutex_destroy(&device_object->iamthif_file_ext.write_io_lock); 342 343 mutex_destroy(&device_object->wd_file_ext.file_lock); 344 mutex_destroy(&device_object->wd_file_ext.read_io_lock); 345 mutex_destroy(&device_object->wd_file_ext.write_io_lock); 346 mutex_destroy(&device_object->device_lock); 347 348 cv_destroy(&device_object->iamthif_file_ext.rx_wait); 349 cv_destroy(&device_object->wd_file_ext.rx_wait); 350 cv_destroy(&device_object->wait_recvd_msg); 351 cv_destroy(&device_object->wait_stop_wd); 352 } 353 354 /* 355 * heci_remove - Device Removal Routine 356 * 357 * @pdev: PCI device information struct 358 * 359 * heci_remove is called by the PCI subsystem to alert the driver 360 * that it should release a PCI device. 361 */ 362 static int 363 heci_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 364 { 365 struct iamt_heci_device *dev; 366 int err; 367 368 dev = ddi_get_soft_state(heci_soft_state_p, ddi_get_instance(dip)); 369 ASSERT(dev != NULL); 370 371 switch (cmd) { 372 case DDI_SUSPEND: 373 err = heci_suspend(dip); 374 if (err) 375 return (DDI_FAILURE); 376 else 377 return (DDI_SUCCESS); 378 379 case DDI_DETACH: 380 break; 381 382 default: 383 return (DDI_FAILURE); 384 } 385 386 if (dev->wd_timer) 387 (void) untimeout(dev->wd_timer); 388 389 mutex_enter(&dev->device_lock); 390 if (dev->wd_file_ext.state == HECI_FILE_CONNECTED && 391 dev->wd_timeout) { 392 dev->wd_timeout = 0; 393 dev->wd_due_counter = 0; 394 (void) memcpy(dev->wd_data, stop_wd_params, 395 HECI_WD_PARAMS_SIZE); 396 dev->stop = 1; 397 if (dev->host_buffer_is_empty && 398 flow_ctrl_creds(dev, &dev->wd_file_ext)) { 399 dev->host_buffer_is_empty = 0; 400 401 if (!heci_send_wd(dev)) { 402 DBG("send stop WD failed\n"); 403 } else 404 flow_ctrl_reduce(dev, &dev->wd_file_ext); 405 406 dev->wd_pending = 0; 407 } else 408 dev->wd_pending = 1; 409 410 dev->wd_stoped = 0; 411 412 err = 0; 413 while (!dev->wd_stoped && err != -1) { 414 err = cv_reltimedwait(&dev->wait_stop_wd, 415 &dev->device_lock, 10*HZ, TR_CLOCK_TICK); 416 } 417 418 if (!dev->wd_stoped) { 419 DBG("stop wd failed to complete.\n"); 420 } else { 421 DBG("stop wd complete.\n"); 422 } 423 424 } 425 426 mutex_exit(&dev->device_lock); 427 428 if (dev->iamthif_file_ext.state == HECI_FILE_CONNECTED) { 429 dev->iamthif_file_ext.state = HECI_FILE_DISCONNECTING; 430 (void) heci_disconnect_host_client(dev, 431 &dev->iamthif_file_ext); 432 } 433 if (dev->wd_file_ext.state == HECI_FILE_CONNECTED) { 434 dev->wd_file_ext.state = HECI_FILE_DISCONNECTING; 435 (void) heci_disconnect_host_client(dev, 436 &dev->wd_file_ext); 437 } 438 439 440 /* remove entry if already in list */ 441 DBG("list del iamthif and wd file list.\n"); 442 heci_remove_client_from_file_list(dev, dev->wd_file_ext. 443 host_client_id); 444 heci_remove_client_from_file_list(dev, 445 dev->iamthif_file_ext.host_client_id); 446 447 dev->iamthif_current_cb = NULL; 448 dev->iamthif_file_ext.file = NULL; 449 450 /* disable interrupts */ 451 heci_csr_disable_interrupts(dev); 452 453 ddi_remove_intr(dip, 0, dev->sc_iblk); 454 455 if (dev->work) 456 ddi_taskq_destroy(dev->work); 457 if (dev->reinit_tsk) 458 ddi_taskq_destroy(dev->reinit_tsk); 459 if (dev->mem_addr) 460 ddi_regs_map_free(&dev->io_handle); 461 462 if (dev->me_clients && dev->num_heci_me_clients > 0) { 463 kmem_free(dev->me_clients, sizeof (struct heci_me_client) * 464 dev->num_heci_me_clients); 465 } 466 467 dev->num_heci_me_clients = 0; 468 469 heci_destroy_locks(dev); 470 471 ddi_remove_minor_node(dip, NULL); 472 ddi_soft_state_free(heci_soft_state_p, ddi_get_instance(dip)); 473 474 return (DDI_SUCCESS); 475 } 476 477 478 static int 479 heci_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result) 480 { 481 int error = DDI_SUCCESS; 482 struct iamt_heci_device *device; 483 int minor, instance; 484 485 _NOTE(ARGUNUSED(dip)) 486 487 switch (cmd) { 488 case DDI_INFO_DEVT2DEVINFO: 489 minor = getminor((dev_t)arg); 490 instance = HECI_MINOR_TO_INSTANCE(minor); 491 if (!(device = ddi_get_soft_state(heci_soft_state_p, instance))) 492 *result = NULL; 493 else 494 *result = device->dip; 495 break; 496 case DDI_INFO_DEVT2INSTANCE: 497 minor = getminor((dev_t)arg); 498 instance = HECI_MINOR_TO_INSTANCE(minor); 499 *result = (void *)((long)minor); 500 break; 501 default: 502 error = DDI_FAILURE; 503 break; 504 } 505 return (error); 506 } 507 /* 508 * heci_clear_list - remove all callbacks associated with file 509 * from heci_cb_list 510 * 511 * @file: file information struct 512 * @heci_cb_list: callbacks list 513 * 514 * heci_clear_list is called to clear resources associated with file 515 * when application calls close function or Ctrl-C was pressed 516 * 517 * @return 1 if callback removed from the list, 0 otherwise 518 */ 519 static int 520 heci_clear_list(struct iamt_heci_device *dev, 521 struct heci_file *file, struct list_node *heci_cb_list) 522 { 523 struct heci_cb_private *priv_cb_pos = NULL; 524 struct heci_cb_private *priv_cb_next = NULL; 525 struct heci_file *file_temp; 526 int rets = 0; 527 528 /* list all list member */ 529 list_for_each_entry_safe(priv_cb_pos, priv_cb_next, 530 heci_cb_list, cb_list, struct heci_cb_private) { 531 file_temp = (struct heci_file *)priv_cb_pos->file_object; 532 /* check if list member associated with a file */ 533 if (file_temp == file) { 534 /* remove member from the list */ 535 list_del(&priv_cb_pos->cb_list); 536 /* check if cb equal to current iamthif cb */ 537 if (dev->iamthif_current_cb == priv_cb_pos) { 538 dev->iamthif_current_cb = NULL; 539 /* send flow control to iamthif client */ 540 if (!heci_send_flow_control(dev, 541 &dev->iamthif_file_ext)) { 542 DBG("sending flow control failed\n"); 543 } 544 } 545 /* free all allocated buffers */ 546 heci_free_cb_private(priv_cb_pos); 547 rets = 1; 548 } 549 } 550 return (rets); 551 } 552 553 /* 554 * heci_clear_lists - remove all callbacks associated with file 555 * 556 * @dev: device information struct 557 * @file: file information struct 558 * 559 * heci_clear_lists is called to clear resources associated with file 560 * when application calls close function or Ctrl-C was pressed 561 * 562 * @return 1 if callback removed from the list, 0 otherwise 563 */ 564 static int 565 heci_clear_lists(struct iamt_heci_device *dev, struct heci_file *file) 566 { 567 int rets = 0; 568 569 /* remove callbacks associated with a file */ 570 (void) heci_clear_list(dev, file, &dev->pthi_cmd_list.heci_cb.cb_list); 571 if (heci_clear_list(dev, file, 572 &dev->pthi_read_complete_list.heci_cb.cb_list)) 573 rets = 1; 574 575 (void) heci_clear_list(dev, file, &dev->ctrl_rd_list.heci_cb.cb_list); 576 577 if (heci_clear_list(dev, file, &dev->ctrl_wr_list.heci_cb.cb_list)) 578 rets = 1; 579 580 if (heci_clear_list(dev, file, 581 &dev->write_waiting_list.heci_cb.cb_list)) 582 rets = 1; 583 584 if (heci_clear_list(dev, file, &dev->write_list.heci_cb.cb_list)) 585 rets = 1; 586 587 /* check if iamthif_current_cb not NULL */ 588 if (dev->iamthif_current_cb && (!rets)) { 589 /* check file and iamthif current cb association */ 590 if (dev->iamthif_current_cb->file_object == file) { 591 /* remove cb */ 592 heci_free_cb_private(dev->iamthif_current_cb); 593 dev->iamthif_current_cb = NULL; 594 rets = 1; 595 } 596 } 597 return (rets); 598 } 599 600 /* 601 * heci_open - the open function 602 */ 603 static int 604 heci_open(dev_t *devp, int flags, int otyp, cred_t *credp) 605 { 606 struct iamt_heci_device *dev; 607 struct heci_file_private *file_ext = NULL; 608 int minor, if_num, instance; 609 struct heci_file *file; 610 611 _NOTE(ARGUNUSED(flags, credp)) 612 613 minor = getminor(*devp); 614 615 DBG("heci_open: enter...\n"); 616 617 /* 618 * Make sure the open is for the right file type. 619 */ 620 if (otyp != OTYP_CHR) 621 return (EINVAL); 622 623 instance = HECI_MINOR_TO_INSTANCE(minor); 624 if_num = HECI_MINOR_TO_IFNUM(minor); 625 626 dev = ddi_get_soft_state(heci_soft_state_p, instance); 627 628 if ((if_num < HECI_MINOR_NUMBER) || (!dev)) 629 return (-ENODEV); 630 631 file_ext = heci_alloc_file_private(NULL); 632 if (file_ext == NULL) 633 return (-ENOMEM); 634 635 mutex_enter(&dev->device_lock); 636 if (dev->heci_state != HECI_ENABLED) { 637 mutex_exit(&dev->device_lock); 638 kmem_free(file_ext, sizeof (struct heci_file_private)); 639 file_ext = NULL; 640 return (-ENODEV); 641 } 642 if (dev->open_handle_count >= HECI_MAX_OPEN_HANDLE_COUNT) { 643 mutex_exit(&dev->device_lock); 644 kmem_free(file_ext, sizeof (struct heci_file_private)); 645 file_ext = NULL; 646 return (-ENFILE); 647 } 648 dev->open_handle_count++; 649 list_add_tail(&file_ext->link, &dev->file_list); 650 while ((dev->heci_host_clients[dev->current_host_client_id / 8] 651 & (1 << (dev->current_host_client_id % 8))) != 0) { 652 653 dev->current_host_client_id++; 654 dev->current_host_client_id %= HECI_MAX_OPEN_HANDLE_COUNT; 655 DBG("current_host_client_id = %d\n", 656 dev->current_host_client_id); 657 DBG("dev->open_handle_count = %lu\n", 658 dev->open_handle_count); 659 } 660 DBG("current_host_client_id = %d\n", dev->current_host_client_id); 661 file_ext->host_client_id = dev->current_host_client_id; 662 *devp = makedevice(getmajor(*devp), 663 MAKE_MINOR_NUM(dev->current_host_client_id, instance)); 664 file = &dev->files[dev->current_host_client_id]; 665 dev->heci_host_clients[file_ext->host_client_id / 8] |= 666 (1 << (file_ext->host_client_id % 8)); 667 mutex_exit(&dev->device_lock); 668 mutex_enter(&file_ext->file_lock); 669 file_ext->state = HECI_FILE_INITIALIZING; 670 file_ext->sm_state = 0; 671 672 file->private_data = file_ext; 673 mutex_exit(&file_ext->file_lock); 674 675 return (0); 676 } 677 678 /* 679 * heci_close - the close function 680 */ 681 static int 682 heci_close(dev_t devt, int flag, int otyp, struct cred *cred) 683 { 684 int rets = 0; 685 int minor, if_num, instance; 686 struct heci_file_private *file_ext; 687 struct heci_cb_private *priv_cb = NULL; 688 struct iamt_heci_device *dev; 689 struct heci_file *file; 690 691 _NOTE(ARGUNUSED(flag, otyp, cred)) 692 693 minor = getminor(devt); 694 695 instance = HECI_MINOR_TO_INSTANCE(minor); 696 if_num = HECI_MINOR_TO_IFNUM(minor); 697 698 dev = ddi_get_soft_state(heci_soft_state_p, instance); 699 700 file = &dev->files[if_num]; 701 file_ext = file->private_data; 702 703 if ((if_num < HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) 704 return (-ENODEV); 705 706 if (file_ext != &dev->iamthif_file_ext) { 707 mutex_enter(&file_ext->file_lock); 708 if (file_ext->state == HECI_FILE_CONNECTED) { 709 file_ext->state = HECI_FILE_DISCONNECTING; 710 mutex_exit(&file_ext->file_lock); 711 DBG("disconnecting client host client = %d, " 712 "ME client = %d\n", 713 file_ext->host_client_id, 714 file_ext->me_client_id); 715 rets = heci_disconnect_host_client(dev, file_ext); 716 mutex_enter(&file_ext->file_lock); 717 } 718 mutex_enter(&dev->device_lock); 719 heci_flush_queues(dev, file_ext); 720 DBG("remove client host client = %d, ME client = %d\n", 721 file_ext->host_client_id, 722 file_ext->me_client_id); 723 724 if (dev->open_handle_count > 0) { 725 dev->heci_host_clients[file_ext->host_client_id / 8] &= 726 ~(1 << (file_ext->host_client_id % 8)); 727 dev->open_handle_count--; 728 } 729 heci_remove_client_from_file_list(dev, 730 file_ext->host_client_id); 731 732 /* free read cb */ 733 if (file_ext->read_cb != NULL) { 734 priv_cb = find_read_list_entry(dev, file_ext); 735 /* Remove entry from read list */ 736 if (priv_cb != NULL) 737 list_del(&priv_cb->cb_list); 738 739 priv_cb = file_ext->read_cb; 740 file_ext->read_cb = NULL; 741 } 742 743 mutex_exit(&dev->device_lock); 744 file->private_data = NULL; 745 mutex_exit(&file_ext->file_lock); 746 747 if (priv_cb != NULL) 748 heci_free_cb_private(priv_cb); 749 750 heci_free_file_private(file_ext); 751 } else { 752 mutex_enter(&dev->device_lock); 753 754 if (dev->open_handle_count > 0) 755 dev->open_handle_count--; 756 757 if (dev->iamthif_file_object == file && 758 dev->iamthif_state != HECI_IAMTHIF_IDLE) { 759 DBG("pthi canceled iamthif state %d\n", 760 dev->iamthif_state); 761 dev->iamthif_canceled = 1; 762 if (dev->iamthif_state == HECI_IAMTHIF_READ_COMPLETE) { 763 DBG("run next pthi iamthif cb\n"); 764 run_next_iamthif_cmd(dev); 765 } 766 } 767 768 if (heci_clear_lists(dev, file)) 769 dev->iamthif_state = HECI_IAMTHIF_IDLE; 770 771 mutex_exit(&dev->device_lock); 772 } 773 return (rets); 774 } 775 776 static struct heci_cb_private * 777 find_read_list_entry(struct iamt_heci_device *dev, 778 struct heci_file_private *file_ext) 779 { 780 struct heci_cb_private *priv_cb_pos = NULL; 781 struct heci_cb_private *priv_cb_next = NULL; 782 struct heci_file_private *file_ext_list_temp; 783 784 if (dev->read_list.status == 0 && 785 !list_empty(&dev->read_list.heci_cb.cb_list)) { 786 787 DBG("remove read_list CB \n"); 788 list_for_each_entry_safe(priv_cb_pos, 789 priv_cb_next, 790 &dev->read_list.heci_cb.cb_list, cb_list, 791 struct heci_cb_private) { 792 793 file_ext_list_temp = (struct heci_file_private *) 794 priv_cb_pos->file_private; 795 796 if ((file_ext_list_temp != NULL) && 797 heci_fe_same_id(file_ext, file_ext_list_temp)) 798 return (priv_cb_pos); 799 800 } 801 } 802 return (NULL); 803 } 804 805 /* 806 * heci_read - the read client message function. 807 */ 808 static int 809 heci_read(dev_t devt, struct uio *uio_p, cred_t *cred_p) 810 { 811 int i; 812 int rets = 0; 813 size_t length; 814 struct heci_file *file; 815 struct heci_file_private *file_ext; 816 struct heci_cb_private *priv_cb_pos = NULL; 817 int instance, minor, if_num, err; 818 struct heci_cb_private *priv_cb = NULL; 819 struct iamt_heci_device *dev; 820 821 _NOTE(ARGUNUSED(cred_p)) 822 823 minor = getminor(devt); 824 825 instance = HECI_MINOR_TO_INSTANCE(minor); 826 if_num = HECI_MINOR_TO_IFNUM(minor); 827 828 dev = ddi_get_soft_state(heci_soft_state_p, instance); 829 830 file = &dev->files[if_num]; 831 file_ext = file->private_data; 832 833 if ((if_num < HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) 834 return (-ENODEV); 835 836 mutex_enter(&dev->device_lock); 837 if (dev->heci_state != HECI_ENABLED) { 838 mutex_exit(&dev->device_lock); 839 return (-ENODEV); 840 } 841 mutex_exit(&dev->device_lock); 842 if (!file_ext) 843 return (-ENODEV); 844 845 mutex_enter(&file_ext->file_lock); 846 if ((file_ext->sm_state & HECI_WD_STATE_INDEPENDENCE_MSG_SENT) == 0) { 847 mutex_exit(&file_ext->file_lock); 848 /* Do not allow to read watchdog client */ 849 for (i = 0; i < dev->num_heci_me_clients; i++) { 850 if (memcmp(&heci_wd_guid, 851 &dev->me_clients[i].props.protocol_name, 852 sizeof (struct guid)) == 0) { 853 if (file_ext->me_client_id == 854 dev->me_clients[i].client_id) 855 return (-EBADF); 856 } 857 } 858 } else { 859 file_ext->sm_state &= ~HECI_WD_STATE_INDEPENDENCE_MSG_SENT; 860 mutex_exit(&file_ext->file_lock); 861 } 862 863 if (file_ext == &dev->iamthif_file_ext) { 864 rets = pthi_read(dev, if_num, file, uio_p); 865 goto out; 866 } 867 868 if (file_ext->read_cb && 869 file_ext->read_cb->information > UIO_OFFSET(uio_p)) { 870 priv_cb = file_ext->read_cb; 871 goto copy_buffer; 872 } else if (file_ext->read_cb && file_ext->read_cb->information > 0 && 873 file_ext->read_cb->information <= UIO_OFFSET(uio_p)) { 874 priv_cb = file_ext->read_cb; 875 rets = 0; 876 goto free; 877 } else if ( 878 (!file_ext->read_cb || file_ext->read_cb->information == 0) && 879 UIO_OFFSET(uio_p) > 0) { 880 /* Offset needs to be cleaned for contingous reads */ 881 UIO_OFFSET(uio_p) = 0; 882 rets = 0; 883 goto out; 884 } 885 886 mutex_enter(&file_ext->read_io_lock); 887 err = heci_start_read(dev, if_num, file_ext); 888 if (err != 0 && err != -EBUSY) { 889 DBG("heci start read failure with status = %d\n", err); 890 mutex_exit(&file_ext->read_io_lock); 891 rets = err; 892 goto out; 893 } 894 while (HECI_READ_COMPLETE != file_ext->reading_state && 895 HECI_FILE_INITIALIZING != file_ext->state && 896 HECI_FILE_DISCONNECTED != file_ext->state && 897 HECI_FILE_DISCONNECTING != file_ext->state) { 898 mutex_exit(&file_ext->read_io_lock); 899 mutex_enter(&dev->device_lock); 900 if (cv_wait_sig(&file_ext->rx_wait, &dev->device_lock) == 0) { 901 mutex_exit(&dev->device_lock); 902 priv_cb = file_ext->read_cb; 903 rets = -EINTR; 904 goto free; 905 } 906 mutex_exit(&dev->device_lock); 907 908 909 if (HECI_FILE_INITIALIZING == file_ext->state || 910 HECI_FILE_DISCONNECTED == file_ext->state || 911 HECI_FILE_DISCONNECTING == file_ext->state) { 912 rets = -EBUSY; 913 goto out; 914 } 915 mutex_enter(&file_ext->read_io_lock); 916 } 917 918 priv_cb = file_ext->read_cb; 919 920 if (!priv_cb) { 921 mutex_exit(&file_ext->read_io_lock); 922 return (-ENODEV); 923 } 924 if (file_ext->reading_state != HECI_READ_COMPLETE) { 925 mutex_exit(&file_ext->read_io_lock); 926 return (0); 927 } 928 mutex_exit(&file_ext->read_io_lock); 929 /* now copy the data to user space */ 930 copy_buffer: 931 DBG("priv_cb->response_buffer size - %d\n", 932 priv_cb->response_buffer.size); 933 DBG("priv_cb->information - %lu\n", priv_cb->information); 934 if (uio_p->uio_resid == 0 || uio_p->uio_resid < priv_cb->information) { 935 rets = -EMSGSIZE; 936 goto free; 937 } 938 length = (uio_p->uio_resid < 939 (priv_cb->information - uio_p->uio_offset) ? 940 uio_p->uio_resid : (priv_cb->information - uio_p->uio_offset)); 941 942 if (uiomove(priv_cb->response_buffer.data, 943 length, UIO_READ, uio_p)) { 944 rets = -EFAULT; 945 goto free; 946 } 947 else 948 rets = 0; 949 950 free: 951 mutex_enter(&dev->device_lock); 952 priv_cb_pos = find_read_list_entry(dev, file_ext); 953 /* Remove entry from read list */ 954 if (priv_cb_pos != NULL) 955 list_del(&priv_cb_pos->cb_list); 956 mutex_exit(&dev->device_lock); 957 heci_free_cb_private(priv_cb); 958 mutex_enter(&file_ext->read_io_lock); 959 file_ext->reading_state = HECI_IDLE; 960 file_ext->read_cb = NULL; 961 file_ext->read_pending = 0; 962 mutex_exit(&file_ext->read_io_lock); 963 out: DBG("end heci read rets= %d\n", rets); 964 return (rets); 965 } 966 967 /* 968 * heci_write - the write function. 969 */ 970 static int 971 heci_write(dev_t devt, struct uio *uio_p, struct cred *cred) 972 { 973 int rets = 0; 974 uint8_t i; 975 size_t length; 976 struct heci_file_private *file_ext; 977 struct heci_cb_private *priv_write_cb = NULL; 978 struct heci_msg_hdr heci_hdr; 979 struct iamt_heci_device *dev; 980 unsigned long currtime = ddi_get_time(); 981 int instance, minor, if_num, err; 982 struct heci_file *file; 983 984 _NOTE(ARGUNUSED(cred)) 985 DBG("heci_write enter...\n"); 986 987 minor = getminor(devt); 988 instance = HECI_MINOR_TO_INSTANCE(minor); 989 if_num = HECI_MINOR_TO_IFNUM(minor); 990 991 dev = ddi_get_soft_state(heci_soft_state_p, instance); 992 993 file = &dev->files[if_num]; 994 file_ext = file->private_data; 995 if ((if_num < HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) 996 return (-ENODEV); 997 998 mutex_enter(&dev->device_lock); 999 1000 if (dev->heci_state != HECI_ENABLED) { 1001 mutex_exit(&dev->device_lock); 1002 return (-ENODEV); 1003 } 1004 if (file_ext == &dev->iamthif_file_ext) { 1005 priv_write_cb = find_pthi_read_list_entry(dev, file); 1006 if ((priv_write_cb != NULL) && 1007 (((currtime - priv_write_cb->read_time) > 1008 IAMTHIF_READ_TIMER) || 1009 (file_ext->reading_state == HECI_READ_COMPLETE))) { 1010 UIO_OFFSET(uio_p) = 0; 1011 list_del(&priv_write_cb->cb_list); 1012 heci_free_cb_private(priv_write_cb); 1013 priv_write_cb = NULL; 1014 } 1015 } 1016 1017 /* free entry used in read */ 1018 if (file_ext->reading_state == HECI_READ_COMPLETE) { 1019 UIO_OFFSET(uio_p) = 0; 1020 priv_write_cb = find_read_list_entry(dev, file_ext); 1021 if (priv_write_cb != NULL) { 1022 list_del(&priv_write_cb->cb_list); 1023 heci_free_cb_private(priv_write_cb); 1024 priv_write_cb = NULL; 1025 mutex_enter(&file_ext->read_io_lock); 1026 file_ext->reading_state = HECI_IDLE; 1027 file_ext->read_cb = NULL; 1028 file_ext->read_pending = 0; 1029 mutex_exit(&file_ext->read_io_lock); 1030 } 1031 } else if (file_ext->reading_state == HECI_IDLE && 1032 file_ext->read_pending == 0) 1033 UIO_OFFSET(uio_p) = 0; 1034 1035 mutex_exit(&dev->device_lock); 1036 1037 priv_write_cb = kmem_zalloc(sizeof (struct heci_cb_private), KM_SLEEP); 1038 if (!priv_write_cb) 1039 return (-ENOMEM); 1040 1041 priv_write_cb->file_object = file; 1042 priv_write_cb->file_private = file_ext; 1043 priv_write_cb->request_buffer.data = 1044 kmem_zalloc(uio_p->uio_resid, KM_SLEEP); 1045 if (!priv_write_cb->request_buffer.data) { 1046 kmem_free(priv_write_cb, sizeof (struct heci_cb_private)); 1047 return (-ENOMEM); 1048 } 1049 length = (int)uio_p->uio_resid; 1050 DBG("length =%d\n", (int)length); 1051 1052 err = uiomove(priv_write_cb->request_buffer.data, 1053 length, UIO_WRITE, uio_p); 1054 if (err) { 1055 rets = err; 1056 goto fail; 1057 } 1058 1059 #define UBUFF UIO_BUFF(uio_p) 1060 1061 mutex_enter(&file_ext->file_lock); 1062 file_ext->sm_state = 0; 1063 if ((length == 4) && 1064 ((memcmp(heci_wd_state_independence_msg[0], UBUFF, 4) == 0) || 1065 (memcmp(heci_wd_state_independence_msg[1], UBUFF, 4) == 0) || 1066 (memcmp(heci_wd_state_independence_msg[2], UBUFF, 4) == 0))) 1067 1068 file_ext->sm_state |= HECI_WD_STATE_INDEPENDENCE_MSG_SENT; 1069 1070 mutex_exit(&file_ext->file_lock); 1071 1072 LIST_INIT_HEAD(&priv_write_cb->cb_list); 1073 if (file_ext == &dev->iamthif_file_ext) { 1074 priv_write_cb->response_buffer.data = 1075 kmem_zalloc(IAMTHIF_MTU, KM_SLEEP); 1076 if (!priv_write_cb->response_buffer.data) { 1077 rets = -ENOMEM; 1078 goto fail; 1079 } 1080 mutex_enter(&dev->device_lock); 1081 if (dev->heci_state != HECI_ENABLED) { 1082 mutex_exit(&dev->device_lock); 1083 rets = -ENODEV; 1084 goto fail; 1085 } 1086 for (i = 0; i < dev->num_heci_me_clients; i++) { 1087 if (dev->me_clients[i].client_id == 1088 dev->iamthif_file_ext.me_client_id) 1089 break; 1090 } 1091 1092 ASSERT(dev->me_clients[i].client_id == file_ext->me_client_id); 1093 if ((i == dev->num_heci_me_clients) || 1094 (dev->me_clients[i].client_id != 1095 dev->iamthif_file_ext.me_client_id)) { 1096 1097 mutex_exit(&dev->device_lock); 1098 rets = -ENODEV; 1099 goto fail; 1100 } else if ((length > 1101 dev->me_clients[i].props.max_msg_length) || 1102 (length == 0)) { 1103 mutex_exit(&dev->device_lock); 1104 rets = -EMSGSIZE; 1105 goto fail; 1106 } 1107 1108 1109 priv_write_cb->response_buffer.size = IAMTHIF_MTU; 1110 priv_write_cb->major_file_operations = HECI_IOCTL; 1111 priv_write_cb->information = 0; 1112 priv_write_cb->request_buffer.size = (uint32_t)length; 1113 if (dev->iamthif_file_ext.state != HECI_FILE_CONNECTED) { 1114 mutex_exit(&dev->device_lock); 1115 rets = -ENODEV; 1116 goto fail; 1117 } 1118 1119 if (!list_empty(&dev->pthi_cmd_list.heci_cb.cb_list) || 1120 dev->iamthif_state != HECI_IAMTHIF_IDLE) { 1121 DBG("pthi_state = %d\n", (int)dev->iamthif_state); 1122 DBG("add PTHI cb to pthi cmd waiting list\n"); 1123 list_add_tail(&priv_write_cb->cb_list, 1124 &dev->pthi_cmd_list.heci_cb.cb_list); 1125 rets = 0; /* length; */ 1126 } else { 1127 DBG("call pthi write\n"); 1128 rets = pthi_write(dev, priv_write_cb); 1129 1130 if (rets != 0) { 1131 DBG("pthi write failed with status = %d\n", 1132 rets); 1133 mutex_exit(&dev->device_lock); 1134 goto fail; 1135 } 1136 rets = 0; /* length; */ 1137 } 1138 mutex_exit(&dev->device_lock); 1139 return (rets); 1140 } 1141 1142 priv_write_cb->major_file_operations = HECI_WRITE; 1143 /* make sure information is zero before we start */ 1144 1145 priv_write_cb->information = 0; 1146 priv_write_cb->request_buffer.size = (uint32_t)length; 1147 1148 mutex_enter(&dev->device_lock); 1149 mutex_enter(&file_ext->write_io_lock); 1150 DBG("host client = %d, ME client = %d\n", 1151 file_ext->host_client_id, file_ext->me_client_id); 1152 if (file_ext->state != HECI_FILE_CONNECTED) { 1153 rets = -ENODEV; 1154 DBG("host client = %d, is not connected to ME client = %d", 1155 file_ext->host_client_id, 1156 file_ext->me_client_id); 1157 1158 goto unlock; 1159 } 1160 for (i = 0; i < dev->num_heci_me_clients; i++) { 1161 if (dev->me_clients[i].client_id == 1162 file_ext->me_client_id) 1163 break; 1164 } 1165 ASSERT(dev->me_clients[i].client_id == file_ext->me_client_id); 1166 if (i == dev->num_heci_me_clients) { 1167 rets = -ENODEV; 1168 goto unlock; 1169 } 1170 if (length > dev->me_clients[i].props.max_msg_length || length == 0) { 1171 rets = -EINVAL; 1172 goto unlock; 1173 } 1174 priv_write_cb->file_private = file_ext; 1175 1176 if (flow_ctrl_creds(dev, file_ext) && 1177 dev->host_buffer_is_empty) { 1178 dev->host_buffer_is_empty = 0; 1179 if (length > ((((dev->host_hw_state & H_CBD) >> 24) * 1180 sizeof (uint32_t)) - sizeof (struct heci_msg_hdr))) { 1181 1182 heci_hdr.length = 1183 (((dev->host_hw_state & H_CBD) >> 24) * 1184 sizeof (uint32_t)) - 1185 sizeof (struct heci_msg_hdr); 1186 heci_hdr.msg_complete = 0; 1187 } else { 1188 heci_hdr.length = (uint32_t)length; 1189 heci_hdr.msg_complete = 1; 1190 } 1191 heci_hdr.host_addr = file_ext->host_client_id; 1192 heci_hdr.me_addr = file_ext->me_client_id; 1193 heci_hdr.reserved = 0; 1194 DBG("call heci_write_message header=%08x.\n", 1195 *((uint32_t *)(void *)&heci_hdr)); 1196 /* protect heci low level write */ 1197 if (!heci_write_message(dev, &heci_hdr, 1198 (unsigned char *)(priv_write_cb->request_buffer.data), 1199 heci_hdr.length)) { 1200 1201 mutex_exit(&file_ext->write_io_lock); 1202 mutex_exit(&dev->device_lock); 1203 heci_free_cb_private(priv_write_cb); 1204 rets = -ENODEV; 1205 priv_write_cb->information = 0; 1206 return (rets); 1207 } 1208 file_ext->writing_state = HECI_WRITING; 1209 priv_write_cb->information = heci_hdr.length; 1210 if (heci_hdr.msg_complete) { 1211 flow_ctrl_reduce(dev, file_ext); 1212 list_add_tail(&priv_write_cb->cb_list, 1213 &dev->write_waiting_list.heci_cb.cb_list); 1214 } else { 1215 list_add_tail(&priv_write_cb->cb_list, 1216 &dev->write_list.heci_cb.cb_list); 1217 } 1218 1219 } else { 1220 1221 priv_write_cb->information = 0; 1222 file_ext->writing_state = HECI_WRITING; 1223 list_add_tail(&priv_write_cb->cb_list, 1224 &dev->write_list.heci_cb.cb_list); 1225 } 1226 mutex_exit(&file_ext->write_io_lock); 1227 mutex_exit(&dev->device_lock); 1228 return (0); 1229 1230 unlock: 1231 mutex_exit(&file_ext->write_io_lock); 1232 mutex_exit(&dev->device_lock); 1233 fail: 1234 heci_free_cb_private(priv_write_cb); 1235 return (rets); 1236 1237 } 1238 1239 /* 1240 * heci_ioctl - the IOCTL function 1241 */ 1242 static int 1243 heci_ioctl(dev_t devt, int cmd, intptr_t arg, int mode, cred_t *cr, int *rval) 1244 { 1245 int rets = 0; 1246 struct heci_file_private *file_ext; 1247 /* in user space */ 1248 struct heci_message_data *u_msg = (struct heci_message_data *)arg; 1249 struct heci_message_data k_msg; /* all in kernel on the stack */ 1250 struct iamt_heci_device *dev; 1251 int instance, minor, if_num; 1252 struct heci_file *file; 1253 1254 _NOTE(ARGUNUSED(cr, rval)) 1255 1256 minor = getminor(devt); 1257 1258 instance = HECI_MINOR_TO_INSTANCE(minor); 1259 if_num = HECI_MINOR_TO_IFNUM(minor); 1260 1261 dev = ddi_get_soft_state(heci_soft_state_p, instance); 1262 1263 file = &dev->files[if_num]; 1264 file_ext = file->private_data; 1265 1266 if ((if_num < HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) 1267 return (-ENODEV); 1268 1269 mutex_enter(&dev->device_lock); 1270 if (dev->heci_state != HECI_ENABLED) { 1271 mutex_exit(&dev->device_lock); 1272 return (-ENODEV); 1273 } 1274 mutex_exit(&dev->device_lock); 1275 1276 /* first copy from user all data needed */ 1277 if (ddi_copyin(u_msg, &k_msg, sizeof (k_msg), mode)) { 1278 DBG("first copy from user all data needed filled\n"); 1279 return (-EFAULT); 1280 } 1281 #ifdef _LP64 1282 if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) { 1283 uint32_t addr32 = (uint32_t)(uint64_t)k_msg.data; 1284 k_msg.data = (char *)(uint64_t)addr32; 1285 DBG("IPL32: k_msg.data=%p\n", (void *)k_msg.data); 1286 } 1287 #endif 1288 DBG("user message size is %d, cmd = 0x%x\n", k_msg.size, cmd); 1289 1290 switch (cmd) { 1291 case IOCTL_HECI_GET_VERSION: 1292 DBG(": IOCTL_HECI_GET_VERSION\n"); 1293 rets = heci_ioctl_get_version(dev, if_num, u_msg, k_msg, 1294 file_ext, mode); 1295 break; 1296 1297 case IOCTL_HECI_CONNECT_CLIENT: 1298 DBG(": IOCTL_HECI_CONNECT_CLIENT.\n"); 1299 rets = heci_ioctl_connect_client(dev, if_num, u_msg, k_msg, 1300 file, mode); 1301 break; 1302 1303 case IOCTL_HECI_WD: 1304 DBG(": IOCTL_HECI_WD.\n"); 1305 rets = heci_ioctl_wd(dev, if_num, k_msg, file_ext, mode); 1306 break; 1307 1308 case IOCTL_HECI_BYPASS_WD: 1309 DBG(": IOCTL_HECI_BYPASS_WD.\n"); 1310 rets = heci_ioctl_bypass_wd(dev, if_num, k_msg, file_ext, mode); 1311 break; 1312 1313 default: 1314 rets = -EINVAL; 1315 break; 1316 } 1317 return (rets); 1318 } 1319 1320 /* 1321 * heci_poll - the poll function 1322 */ 1323 static int 1324 heci_poll(dev_t devt, short events, int anyyet, 1325 short *reventsp, struct pollhead **phpp) 1326 { 1327 struct heci_file *file; 1328 struct heci_file_private *file_extension; 1329 struct iamt_heci_device *device = NULL; 1330 int instance, minor, if_num; 1331 1332 _NOTE(ARGUNUSED(events)) 1333 1334 minor = getminor(devt); 1335 1336 instance = HECI_MINOR_TO_INSTANCE(minor); 1337 if_num = HECI_MINOR_TO_IFNUM(minor); 1338 1339 device = ddi_get_soft_state(heci_soft_state_p, instance); 1340 1341 file = &device->files[if_num]; 1342 file_extension = file->private_data; 1343 1344 if ((if_num < HECI_MINOR_NUMBER) || (!device) || (!file_extension)) 1345 return (-ENODEV); 1346 1347 mutex_enter(&device->device_lock); 1348 if (device->heci_state != HECI_ENABLED) { 1349 mutex_exit(&device->device_lock); 1350 return (-ENXIO); 1351 1352 } 1353 1354 mutex_exit(&device->device_lock); 1355 1356 if (file_extension == &device->iamthif_file_ext) { 1357 1358 mutex_enter(&device->iamthif_file_ext.file_lock); 1359 1360 if (device->iamthif_state == HECI_IAMTHIF_READ_COMPLETE && 1361 device->iamthif_file_object == file) { 1362 *reventsp |= (POLLIN | POLLRDNORM); 1363 mutex_enter(&device->device_lock); 1364 DBG("heci_poll: run next pthi cb\n"); 1365 run_next_iamthif_cmd(device); 1366 mutex_exit(&device->device_lock); 1367 } else { 1368 DBG("heci_poll: iamthif no event\n"); 1369 *reventsp = 0; 1370 if (!anyyet) 1371 *phpp = &device->iamthif_file_ext.pollwait; 1372 } 1373 mutex_exit(&device->iamthif_file_ext.file_lock); 1374 1375 } else { 1376 mutex_enter(&file_extension->write_io_lock); 1377 if (HECI_WRITE_COMPLETE == file_extension->writing_state) { 1378 *reventsp |= (POLLIN | POLLRDNORM); 1379 DBG("heci_poll: file_extension poll event\n"); 1380 } else { 1381 DBG("heci_poll: file_extension no event\n"); 1382 *reventsp = 0; 1383 if (!anyyet) 1384 *phpp = &file_extension->tx_pollwait; 1385 } 1386 mutex_exit(&file_extension->write_io_lock); 1387 1388 1389 } 1390 1391 return (0); 1392 } 1393 1394 /* 1395 * heci_fe_same_id - tell if file private data have same id 1396 * 1397 * @fe1: private data of 1. file object 1398 * @fe2: private data of 2. file object 1399 * 1400 * @return !=0 - if ids are the same, 0 - if differ. 1401 */ 1402 static inline int heci_fe_same_id(struct heci_file_private *fe1, 1403 struct heci_file_private *fe2) 1404 { 1405 return ((fe1->host_client_id == fe2->host_client_id) && 1406 (fe1->me_client_id == fe2->me_client_id)); 1407 } 1408 1409 /* 1410 * Since the ME firmware won't reset itself during OS reboot, it's not enough 1411 * to only disable interrupts in quiesce(), here we do a full hand-shake 1412 * with the firmware. 1413 */ 1414 static int 1415 heci_quiesce(dev_info_t *dip) 1416 { 1417 struct iamt_heci_device *dev; 1418 1419 dev = ddi_get_soft_state(heci_soft_state_p, ddi_get_instance(dip)); 1420 ASSERT(dev != NULL); 1421 1422 if (dev->wd_file_ext.state == HECI_FILE_CONNECTED && 1423 dev->wd_timeout) { 1424 dev->wd_timeout = 0; 1425 dev->wd_due_counter = 0; 1426 (void) memcpy(dev->wd_data, stop_wd_params, 1427 HECI_WD_PARAMS_SIZE); 1428 if (!heci_send_wd(dev)) { 1429 DBG("send stop WD failed\n"); 1430 } 1431 1432 } 1433 1434 /* disable interrupts */ 1435 heci_csr_disable_interrupts(dev); 1436 1437 return (DDI_SUCCESS); 1438 } 1439 1440 static int 1441 heci_suspend(dev_info_t *dip) 1442 { 1443 struct iamt_heci_device *device; 1444 int err = 0; 1445 1446 device = ddi_get_soft_state(heci_soft_state_p, ddi_get_instance(dip)); 1447 1448 if (device->reinit_tsk) 1449 ddi_taskq_wait(device->reinit_tsk); 1450 1451 /* Stop watchdog if exists */ 1452 if (device->wd_timer) 1453 (void) untimeout(device->wd_timer); 1454 1455 mutex_enter(&device->device_lock); 1456 1457 if (device->wd_file_ext.state == HECI_FILE_CONNECTED && 1458 device->wd_timeout) { 1459 g_sus_wd_timeout = device->wd_timeout; 1460 device->wd_timeout = 0; 1461 device->wd_due_counter = 0; 1462 (void) memcpy(device->wd_data, stop_wd_params, 1463 HECI_WD_PARAMS_SIZE); 1464 device->stop = 1; 1465 if (device->host_buffer_is_empty && 1466 flow_ctrl_creds(device, &device->wd_file_ext)) { 1467 device->host_buffer_is_empty = 0; 1468 if (!heci_send_wd(device)) { 1469 DBG("send stop WD failed\n"); 1470 } 1471 else 1472 flow_ctrl_reduce(device, &device->wd_file_ext); 1473 1474 device->wd_pending = 0; 1475 } else { 1476 device->wd_pending = 1; 1477 } 1478 device->wd_stoped = 0; 1479 1480 err = 0; 1481 while (!device->wd_stoped && err != -1) { 1482 err = cv_reltimedwait(&device->wait_stop_wd, 1483 &device->device_lock, 10*HZ, TR_CLOCK_TICK); 1484 } 1485 1486 if (!device->wd_stoped) { 1487 DBG("stop wd failed to complete.\n"); 1488 } else { 1489 DBG("stop wd complete %d.\n", err); 1490 err = 0; 1491 } 1492 } 1493 /* Set new heci state */ 1494 if (device->heci_state == HECI_ENABLED || 1495 device->heci_state == HECI_RECOVERING_FROM_RESET) { 1496 device->heci_state = HECI_POWER_DOWN; 1497 heci_reset(device, 0); 1498 } 1499 1500 /* Here interrupts are already disabled by heci_reset() */ 1501 1502 mutex_exit(&device->device_lock); 1503 1504 1505 return (err); 1506 } 1507 1508 static void 1509 heci_resume(dev_info_t *dip) 1510 { 1511 struct iamt_heci_device *device; 1512 1513 device = ddi_get_soft_state(heci_soft_state_p, ddi_get_instance(dip)); 1514 1515 mutex_enter(&device->device_lock); 1516 device->heci_state = HECI_POWER_UP; 1517 heci_reset(device, 1); 1518 mutex_exit(&device->device_lock); 1519 1520 /* Start watchdog if stopped in suspend */ 1521 if (g_sus_wd_timeout != 0) { 1522 device->wd_timeout = g_sus_wd_timeout; 1523 1524 (void) memcpy(device->wd_data, start_wd_params, 1525 HECI_WD_PARAMS_SIZE); 1526 (void) memcpy(device->wd_data + HECI_WD_PARAMS_SIZE, 1527 &device->wd_timeout, sizeof (uint16_t)); 1528 device->wd_due_counter = 1; 1529 1530 if (device->wd_timeout) 1531 device->wd_timer = timeout(heci_wd_timer, device, 1); 1532 1533 g_sus_wd_timeout = 0; 1534 } 1535 } 1536