drivers/hotplug/pciehp_ctrl.c

   1 /*
   2  * PCI Express Hot Plug Controller Driver
   3  *
   4  * Copyright (C) 1995,2001 Compaq Computer Corporation
   5  * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
   6  * Copyright (C) 2001 IBM Corp.
   7  * Copyright (C) 2003-2004 Intel Corporation
   8  *
   9  * All rights reserved.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or (at
  14  * your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  19  * NON INFRINGEMENT.  See the GNU General Public License for more
  20  * details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  *
  26  * Send feedback to <greg@kroah.com>, <dely.l.sy@intel.com>
  27  *
  28  */
  29
  30 #include <linux/config.h>
  31 #include <linux/module.h>
  32 #include <linux/kernel.h>
  33 #include <linux/types.h>
  34 #include <linux/slab.h>
  35 #include <linux/tqueue.h>
  36 #include <linux/interrupt.h>
  37 #include <linux/delay.h>
  38 #include <linux/wait.h>
  39 #include <linux/smp_lock.h>
  40 #include <linux/pci.h>
  41 #include "pciehp.h"
  42 #include "pciehprm.h"
  43
  44 static u32 configure_new_device(struct controller *ctrl, struct pci_func *func,
  45         u8 behind_bridge, struct resource_lists *resources, u8 bridge_bus, u8 bridge_dev);
  46 static int configure_new_function( struct controller *ctrl, struct pci_func *func,
  47         u8 behind_bridge, struct resource_lists *resources, u8 bridge_bus, u8 bridge_dev);
  48 static void interrupt_event_handler(struct controller *ctrl);
  49
  50 static struct semaphore event_semaphore;        /* mutex for process loop (up if something to process) */
  51 static struct semaphore event_exit;             /* guard ensure thread has exited before calling it quits */
  52 static int event_finished;
  53 static unsigned long pushbutton_pending;        /* = 0 */
  54
  55 u8 pciehp_handle_attention_button(u8 hp_slot, void *inst_id)
  56 {
  57         struct controller *ctrl = (struct controller *) inst_id;
  58         struct slot *p_slot;
  59         u8 rc = 0;
  60         u8 getstatus;
  61         struct pci_func *func;
  62         struct event_info *taskInfo;
  63
  64         /* Attention Button Change */
  65         dbg("pciehp:  Attention button interrupt received.\n");
  66
  67         func = pciehp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0);
  68
  69         /* This is the structure that tells the worker thread what to do */
  70         taskInfo = &(ctrl->event_queue[ctrl->next_event]);
  71         p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
  72
  73         p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save));
  74         p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
  75
  76         ctrl->next_event = (ctrl->next_event + 1) % 10;
  77         taskInfo->hp_slot = hp_slot;
  78
  79         rc++;
  80
  81         /*
  82          *  Button pressed - See if need to TAKE ACTION!!!
  83          */
  84         info("Button pressed on Slot(%d)\n", ctrl->first_slot + hp_slot);
  85         taskInfo->event_type = INT_BUTTON_PRESS;
  86
  87         if ((p_slot->state == BLINKINGON_STATE)
  88             || (p_slot->state == BLINKINGOFF_STATE)) {
  89                 /* Cancel if we are still blinking; this means that we press the
  90                  * attention again before the 5 sec. limit expires to cancel hot-add
  91                  * or hot-remove
  92                  */
  93                 taskInfo->event_type = INT_BUTTON_CANCEL;
  94                 info("Button cancel on Slot(%d)\n", ctrl->first_slot + hp_slot);
  95         } else if ((p_slot->state == POWERON_STATE)
  96                    || (p_slot->state == POWEROFF_STATE)) {
  97                 /* Ignore if the slot is on power-on or power-off state; this
  98                  * means that the previous attention button action to hot-add or
  99                  * hot-remove is undergoing
 100                  */
 101                 taskInfo->event_type = INT_BUTTON_IGNORE;
 102                 info("Button ignore on Slot(%d)\n", ctrl->first_slot + hp_slot);
 103         }
 104         if (rc)
 105                 up(&event_semaphore);   /* signal event thread that new event is posted */
 106
 107         return 0;
 108
 109 }
 110
 111 u8 pciehp_handle_switch_change(u8 hp_slot, void *inst_id)
 112 {
 113         struct controller *ctrl = (struct controller *) inst_id;
 114         struct slot *p_slot;
 115         u8 rc = 0;
 116         u8 getstatus;
 117         struct pci_func *func;
 118         struct event_info *taskInfo;
 119
 120         /* Switch Change */
 121         dbg("pciehp:  Switch interrupt received.\n");
 122
 123         func = pciehp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0);
 124
 125         /* this is the structure that tells the worker thread
 126          * what to do
 127          */
 128         taskInfo = &(ctrl->event_queue[ctrl->next_event]);
 129         ctrl->next_event = (ctrl->next_event + 1) % 10;
 130         taskInfo->hp_slot = hp_slot;
 131
 132         rc++;
 133         p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
 134         p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save));
 135         p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 136
 137         if (getstatus) {
 138                 /*
 139                  * Switch opened
 140                  */
 141                 info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot);
 142                 func->switch_save = 0;
 143                 taskInfo->event_type = INT_SWITCH_OPEN;
 144         } else {
 145                 /*
 146                  *  Switch closed
 147                  */
 148                 info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot);
 149                 func->switch_save = 0x10;
 150                 taskInfo->event_type = INT_SWITCH_CLOSE;
 151         }
 152         if (rc)
 153                 up(&event_semaphore);   /* signal event thread that new event is posted */
 154
 155         return rc;
 156 }
 157
 158 u8 pciehp_handle_presence_change(u8 hp_slot, void *inst_id)
 159 {
 160         struct controller *ctrl = (struct controller *) inst_id;
 161         struct slot *p_slot;
 162         u8 rc = 0;
 163         struct pci_func *func;
 164         struct event_info *taskInfo;
 165
 166         /* Presence Change */
 167         dbg("pciehp:  Presence/Notify input change.\n");
 168
 169         func = pciehp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0);
 170
 171         /* This is the structure that tells the worker thread
 172          * what to do
 173          */
 174         taskInfo = &(ctrl->event_queue[ctrl->next_event]);
 175         ctrl->next_event = (ctrl->next_event + 1) % 10;
 176         taskInfo->hp_slot = hp_slot;
 177
 178         rc++;
 179         p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
 180
 181         /* Switch is open, assume a presence change
 182          * Save the presence state
 183          */
 184         p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save));
 185         if (func->presence_save) {
 186                 /*
 187                  * Card Present
 188                  */
 189                 info("Card present on Slot(%d)\n", ctrl->first_slot + hp_slot);
 190                 taskInfo->event_type = INT_PRESENCE_ON;
 191         } else {
 192                 /*
 193                  * Not Present
 194                  */
 195                 info("Card not present on Slot(%d)\n", ctrl->first_slot + hp_slot);
 196                 taskInfo->event_type = INT_PRESENCE_OFF;
 197         }
 198         if (rc)
 199                 up(&event_semaphore);   /* signal event thread that new event is posted */
 200
 201         return rc;
 202 }
 203
 204 u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id)
 205 {
 206         struct controller *ctrl = (struct controller *) inst_id;
 207         struct slot *p_slot;
 208         u8 rc = 0;
 209         struct pci_func *func;
 210         struct event_info *taskInfo;
 211
 212         /* power fault */
 213         dbg("pciehp:  Power fault interrupt received.\n");
 214
 215         func = pciehp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0);
 216
 217         /* This is the structure that tells the worker thread
 218          * what to do
 219          */
 220         taskInfo = &(ctrl->event_queue[ctrl->next_event]);
 221         ctrl->next_event = (ctrl->next_event + 1) % 10;
 222         taskInfo->hp_slot = hp_slot;
 223
 224         rc++;
 225         p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
 226
 227         if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) {
 228                 /*
 229                  * Power fault cleared
 230                  */
 231                 info("Power fault cleared on Slot(%d)\n", ctrl->first_slot + hp_slot);
 232                 func->status = 0x00;
 233                 taskInfo->event_type = INT_POWER_FAULT_CLEAR;
 234         } else {
 235                 /*
 236                  *   Power fault
 237                  */
 238                 info("Power fault on Slot(%d)\n", ctrl->first_slot + hp_slot);
 239                 taskInfo->event_type = INT_POWER_FAULT;
 240                 /* Set power fault status for this board */
 241                 func->status = 0xFF;
 242                 info("power fault bit %x set\n", hp_slot);
 243         }
 244         if (rc)
 245                 up(&event_semaphore);   /* Signal event thread that new event is posted */
 246
 247         return rc;
 248 }
 249
 250
 251 /*
 252  * sort_by_size
 253  *
 254  * Sorts nodes on the list by their length.
 255  * Smallest first.
 256  *
 257  */
 258 static int sort_by_size(struct pci_resource **head)
 259 {
 260         struct pci_resource *current_res;
 261         struct pci_resource *next_res;
 262         int out_of_order = 1;
 263
 264         if (!(*head))
 265                 return(1);
 266
 267         if (!((*head)->next))
 268                 return(0);
 269
 270         while (out_of_order) {
 271                 out_of_order = 0;
 272
 273                 /* Special case for swapping list head */
 274                 if (((*head)->next) &&
 275                     ((*head)->length > (*head)->next->length)) {
 276                         out_of_order++;
 277                         current_res = *head;
 278                         *head = (*head)->next;
 279                         current_res->next = (*head)->next;
 280                         (*head)->next = current_res;
 281                 }
 282
 283                 current_res = *head;
 284
 285                 while (current_res->next && current_res->next->next) {
 286                         if (current_res->next->length > current_res->next->next->length) {
 287                                 out_of_order++;
 288                                 next_res = current_res->next;
 289                                 current_res->next = current_res->next->next;
 290                                 current_res = current_res->next;
 291                                 next_res->next = current_res->next;
 292                                 current_res->next = next_res;
 293                         } else
 294                                 current_res = current_res->next;
 295                 }
 296         }  /* End of out_of_order loop */
 297
 298         return(0);
 299 }
 300
 301
 302 /*
 303  * sort_by_max_size
 304  *
 305  * Sorts nodes on the list by their length.
 306  * Largest first.
 307  *
 308  */
 309 static int sort_by_max_size(struct pci_resource **head)
 310 {
 311         struct pci_resource *current_res;
 312         struct pci_resource *next_res;
 313         int out_of_order = 1;
 314
 315         if (!(*head))
 316                 return(1);
 317
 318         if (!((*head)->next))
 319                 return(0);
 320
 321         while (out_of_order) {
 322                 out_of_order = 0;
 323
 324                 /* Special case for swapping list head */
 325                 if (((*head)->next) &&
 326                     ((*head)->length < (*head)->next->length)) {
 327                         out_of_order++;
 328                         current_res = *head;
 329                         *head = (*head)->next;
 330                         current_res->next = (*head)->next;
 331                         (*head)->next = current_res;
 332                 }
 333
 334                 current_res = *head;
 335
 336                 while (current_res->next && current_res->next->next) {
 337                         if (current_res->next->length < current_res->next->next->length) {
 338                                 out_of_order++;
 339                                 next_res = current_res->next;
 340                                 current_res->next = current_res->next->next;
 341                                 current_res = current_res->next;
 342                                 next_res->next = current_res->next;
 343                                 current_res->next = next_res;
 344                         } else
 345                                 current_res = current_res->next;
 346                 }
 347         }  /* End of out_of_order loop */
 348
 349         return(0);
 350 }
 351
 352
 353 /*
 354  * do_pre_bridge_resource_split
 355  *
 356  *      Returns zero or one node of resources that aren't in use
 357  *
 358  */
 359 static struct pci_resource *do_pre_bridge_resource_split (struct pci_resource **head, struct pci_resource **orig_head, u32 alignment)
 360 {
 361         struct pci_resource *prevnode = NULL;
 362         struct pci_resource *node;
 363         struct pci_resource *split_node;
 364         u32 rc;
 365         u32 temp_dword;
 366         dbg("do_pre_bridge_resource_split\n");
 367
 368         if (!(*head) || !(*orig_head))
 369                 return(NULL);
 370
 371         rc = pciehp_resource_sort_and_combine(head);
 372
 373         if (rc)
 374                 return(NULL);
 375
 376         if ((*head)->base != (*orig_head)->base)
 377                 return(NULL);
 378
 379         if ((*head)->length == (*orig_head)->length)
 380                 return(NULL);
 381
 382
 383         /* If we got here, there the bridge requires some of the resource, but
 384          *  we may be able to split some off of the front
 385          */
 386         node = *head;
 387
 388         if (node->length & (alignment -1)) {
 389                 /* This one isn't an aligned length, so we'll make a new entry
 390                  * and split it up.
 391                  */
 392                 split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 393
 394                 if (!split_node)
 395                         return(NULL);
 396
 397                 temp_dword = (node->length | (alignment-1)) + 1 - alignment;
 398
 399                 split_node->base = node->base;
 400                 split_node->length = temp_dword;
 401
 402                 node->length -= temp_dword;
 403                 node->base += split_node->length;
 404
 405                 /* Put it in the list */
 406                 *head = split_node;
 407                 split_node->next = node;
 408         }
 409
 410         if (node->length < alignment) {
 411                 return(NULL);
 412         }
 413
 414         /* Now unlink it */
 415         if (*head == node) {
 416                 *head = node->next;
 417                 node->next = NULL;
 418         } else {
 419                 prevnode = *head;
 420                 while (prevnode->next != node)
 421                         prevnode = prevnode->next;
 422
 423                 prevnode->next = node->next;
 424                 node->next = NULL;
 425         }
 426
 427         return(node);
 428 }
 429
 430
 431 /*
 432  * do_bridge_resource_split
 433  *
 434  *      Returns zero or one node of resources that aren't in use
 435  *
 436  */
 437 static struct pci_resource *do_bridge_resource_split (struct pci_resource **head, u32 alignment)
 438 {
 439         struct pci_resource *prevnode = NULL;
 440         struct pci_resource *node;
 441         u32 rc;
 442         u32 temp_dword;
 443
 444         if (!(*head))
 445                 return(NULL);
 446
 447         rc = pciehp_resource_sort_and_combine(head);
 448
 449         if (rc)
 450                 return(NULL);
 451
 452         node = *head;
 453
 454         while (node->next) {
 455                 prevnode = node;
 456                 node = node->next;
 457                 kfree(prevnode);
 458         }
 459
 460         if (node->length < alignment) {
 461                 kfree(node);
 462                 return(NULL);
 463         }
 464
 465         if (node->base & (alignment - 1)) {
 466                 /* Short circuit if adjusted size is too small */
 467                 temp_dword = (node->base | (alignment-1)) + 1;
 468                 if ((node->length - (temp_dword - node->base)) < alignment) {
 469                         kfree(node);
 470                         return(NULL);
 471                 }
 472
 473                 node->length -= (temp_dword - node->base);
 474                 node->base = temp_dword;
 475         }
 476
 477         if (node->length & (alignment - 1)) {
 478                 /* There's stuff in use after this node */
 479                 kfree(node);
 480                 return(NULL);
 481         }
 482
 483         return(node);
 484 }
 485
 486
 487 /*
 488  * get_io_resource
 489  *
 490  * this function sorts the resource list by size and then
 491  * returns the first node of "size" length that is not in the
 492  * ISA aliasing window.  If it finds a node larger than "size"
 493  * it will split it up.
 494  *
 495  * size must be a power of two.
 496  */
 497 static struct pci_resource *get_io_resource (struct pci_resource **head, u32 size)
 498 {
 499         struct pci_resource *prevnode;
 500         struct pci_resource *node;
 501         struct pci_resource *split_node = NULL;
 502         u32 temp_dword;
 503
 504         if (!(*head))
 505                 return(NULL);
 506
 507         if ( pciehp_resource_sort_and_combine(head) )
 508                 return(NULL);
 509
 510         if ( sort_by_size(head) )
 511                 return(NULL);
 512
 513         for (node = *head; node; node = node->next) {
 514                 if (node->length < size)
 515                         continue;
 516
 517                 if (node->base & (size - 1)) {
 518                         /* This one isn't base aligned properly
 519                            so we'll make a new entry and split it up */
 520                         temp_dword = (node->base | (size-1)) + 1;
 521
 522                         /*/ Short circuit if adjusted size is too small */
 523                         if ((node->length - (temp_dword - node->base)) < size)
 524                                 continue;
 525
 526                         split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 527
 528                         if (!split_node)
 529                                 return(NULL);
 530
 531                         split_node->base = node->base;
 532                         split_node->length = temp_dword - node->base;
 533                         node->base = temp_dword;
 534                         node->length -= split_node->length;
 535
 536                         /* Put it in the list */
 537                         split_node->next = node->next;
 538                         node->next = split_node;
 539                 } /* End of non-aligned base */
 540
 541                 /* Don't need to check if too small since we already did */
 542                 if (node->length > size) {
 543                         /* This one is longer than we need
 544                            so we'll make a new entry and split it up */
 545                         split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 546
 547                         if (!split_node)
 548                                 return(NULL);
 549
 550                         split_node->base = node->base + size;
 551                         split_node->length = node->length - size;
 552                         node->length = size;
 553
 554                         /* Put it in the list */
 555                         split_node->next = node->next;
 556                         node->next = split_node;
 557                 }  /* End of too big on top end */
 558
 559                 /* For IO make sure it's not in the ISA aliasing space */
 560                 if (node->base & 0x300L)
 561                         continue;
 562
 563                 /* If we got here, then it is the right size
 564                    Now take it out of the list */
 565                 if (*head == node) {
 566                         *head = node->next;
 567                 } else {
 568                         prevnode = *head;
 569                         while (prevnode->next != node)
 570                                 prevnode = prevnode->next;
 571
 572                         prevnode->next = node->next;
 573                 }
 574                 node->next = NULL;
 575                 /* Stop looping */
 576                 break;
 577         }
 578
 579         return(node);
 580 }
 581
 582
 583 /*
 584  * get_max_resource
 585  *
 586  * Gets the largest node that is at least "size" big from the
 587  * list pointed to by head.  It aligns the node on top and bottom
 588  * to "size" alignment before returning it.
 589  * J.I. modified to put max size limits of; 64M->32M->16M->8M->4M->1M
 590  *  This is needed to avoid allocating entire ACPI _CRS res to one child bridge/slot.
 591  */
 592 static struct pci_resource *get_max_resource (struct pci_resource **head, u32 size)
 593 {
 594         struct pci_resource *max;
 595         struct pci_resource *temp;
 596         struct pci_resource *split_node;
 597         u32 temp_dword;
 598         u32 max_size[] = { 0x4000000, 0x2000000, 0x1000000, 0x0800000, 0x0400000, 0x0200000, 0x0100000, 0x00 };
 599         int i;
 600
 601         if (!(*head))
 602                 return(NULL);
 603
 604         if (pciehp_resource_sort_and_combine(head))
 605                 return(NULL);
 606
 607         if (sort_by_max_size(head))
 608                 return(NULL);
 609
 610         for (max = *head;max; max = max->next) {
 611
 612                 /* If not big enough we could probably just bail,
 613                    instead we'll continue to the next. */
 614                 if (max->length < size)
 615                         continue;
 616
 617                 if (max->base & (size - 1)) {
 618                         /* This one isn't base aligned properly
 619                            so we'll make a new entry and split it up */
 620                         temp_dword = (max->base | (size-1)) + 1;
 621
 622                         /* Short circuit if adjusted size is too small */
 623                         if ((max->length - (temp_dword - max->base)) < size)
 624                                 continue;
 625
 626                         split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 627
 628                         if (!split_node)
 629                                 return(NULL);
 630
 631                         split_node->base = max->base;
 632                         split_node->length = temp_dword - max->base;
 633                         max->base = temp_dword;
 634                         max->length -= split_node->length;
 635
 636                         /* Put it next in the list */
 637                         split_node->next = max->next;
 638                         max->next = split_node;
 639                 }
 640
 641                 if ((max->base + max->length) & (size - 1)) {
 642                         /* This one isn't end aligned properly at the top
 643                            so we'll make a new entry and split it up */
 644                         split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 645
 646                         if (!split_node)
 647                                 return(NULL);
 648                         temp_dword = ((max->base + max->length) & ~(size - 1));
 649                         split_node->base = temp_dword;
 650                         split_node->length = max->length + max->base
 651                                              - split_node->base;
 652                         max->length -= split_node->length;
 653
 654                         /* Put it in the list */
 655                         split_node->next = max->next;
 656                         max->next = split_node;
 657                 }
 658
 659                 /* Make sure it didn't shrink too much when we aligned it */
 660                 if (max->length < size)
 661                         continue;
 662
 663                 for ( i = 0; max_size[i] > size; i++) {
 664                         if (max->length > max_size[i]) {
 665                                 split_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 666                                 if (!split_node)
 667                                         break;  /* return (NULL); */
 668                                 split_node->base = max->base + max_size[i];
 669                                 split_node->length = max->length - max_size[i];
 670                                 max->length = max_size[i];
 671                                 /* Put it next in the list */
 672                                 split_node->next = max->next;
 673                                 max->next = split_node;
 674                                 break;
 675                         }
 676                 }
 677
 678                 /* Now take it out of the list */
 679                 temp = (struct pci_resource*) *head;
 680                 if (temp == max) {
 681                         *head = max->next;
 682                 } else {
 683                         while (temp && temp->next != max) {
 684                                 temp = temp->next;
 685                         }
 686
 687                         temp->next = max->next;
 688                 }
 689
 690                 max->next = NULL;
 691                 return(max);
 692         }
 693
 694         /* If we get here, we couldn't find one */
 695         return(NULL);
 696 }
 697
 698
 699 /*
 700  * get_resource
 701  *
 702  * this function sorts the resource list by size and then
 703  * returns the first node of "size" length.  If it finds a node
 704  * larger than "size" it will split it up.
 705  *
 706  * size must be a power of two.
 707  */
 708 static struct pci_resource *get_resource (struct pci_resource **head, u32 size)
 709 {
 710         struct pci_resource *prevnode;
 711         struct pci_resource *node;
 712         struct pci_resource *split_node;
 713         u32 temp_dword;
 714
 715         if (!(*head))
 716                 return(NULL);
 717
 718         if ( pciehp_resource_sort_and_combine(head) )
 719                 return(NULL);
 720
 721         if ( sort_by_size(head) )
 722                 return(NULL);
 723
 724         for (node = *head; node; node = node->next) {
 725                 dbg("%s: req_size =0x%x node=%p, base=0x%x, length=0x%x\n",
 726                     __FUNCTION__, size, node, node->base, node->length);
 727                 if (node->length < size)
 728                         continue;
 729
 730                 if (node->base & (size - 1)) {
 731                         dbg("%s: not aligned\n", __FUNCTION__);
 732                         /* This one isn't base aligned properly
 733                            so we'll make a new entry and split it up */
 734                         temp_dword = (node->base | (size-1)) + 1;
 735
 736                         /* Short circuit if adjusted size is too small */
 737                         if ((node->length - (temp_dword - node->base)) < size)
 738                                 continue;
 739
 740                         split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 741
 742                         if (!split_node)
 743                                 return(NULL);
 744
 745                         split_node->base = node->base;
 746                         split_node->length = temp_dword - node->base;
 747                         node->base = temp_dword;
 748                         node->length -= split_node->length;
 749
 750                         /* Put it in the list */
 751                         split_node->next = node->next;
 752                         node->next = split_node;
 753                 } /* End of non-aligned base */
 754
 755                 /* Don't need to check if too small since we already did */
 756                 if (node->length > size) {
 757                         dbg("%s: too big\n", __FUNCTION__);
 758                         /* This one is longer than we need
 759                            so we'll make a new entry and split it up */
 760                         split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 761
 762                         if (!split_node)
 763                                 return(NULL);
 764
 765                         split_node->base = node->base + size;
 766                         split_node->length = node->length - size;
 767                         node->length = size;
 768
 769                         /* Put it in the list */
 770                         split_node->next = node->next;
 771                         node->next = split_node;
 772                 }  /* End of too big on top end */
 773
 774                 dbg("%s: got one!!!\n", __FUNCTION__);
 775                 /* If we got here, then it is the right size
 776                    Now take it out of the list */
 777                 if (*head == node) {
 778                         *head = node->next;
 779                 } else {
 780                         prevnode = *head;
 781                         while (prevnode->next != node)
 782                                 prevnode = prevnode->next;
 783
 784                         prevnode->next = node->next;
 785                 }
 786                 node->next = NULL;
 787                 /* Stop looping */
 788                 break;
 789         }
 790         return(node);
 791 }
 792
 793
 794 /*
 795  * pciehp_resource_sort_and_combine
 796  *
 797  * Sorts all of the nodes in the list in ascending order by
 798  * their base addresses.  Also does garbage collection by
 799  * combining adjacent nodes.
 800  *
 801  * returns 0 if success
 802  */
 803 int pciehp_resource_sort_and_combine(struct pci_resource **head)
 804 {
 805         struct pci_resource *node1;
 806         struct pci_resource *node2;
 807         int out_of_order = 1;
 808
 809         dbg("%s: head = %p, *head = %p\n", __FUNCTION__, head, *head);
 810
 811         if (!(*head))
 812                 return(1);
 813
 814         dbg("*head->next = %p\n",(*head)->next);
 815
 816         if (!(*head)->next)
 817                 return(0);      /* Only one item on the list, already sorted! */
 818
 819         dbg("*head->base = 0x%x\n",(*head)->base);
 820         dbg("*head->next->base = 0x%x\n",(*head)->next->base);
 821         while (out_of_order) {
 822                 out_of_order = 0;
 823
 824                 /* Special case for swapping list head */
 825                 if (((*head)->next) &&
 826                     ((*head)->base > (*head)->next->base)) {
 827                         node1 = *head;
 828                         (*head) = (*head)->next;
 829                         node1->next = (*head)->next;
 830                         (*head)->next = node1;
 831                         out_of_order++;
 832                 }
 833
 834                 node1 = (*head);
 835
 836                 while (node1->next && node1->next->next) {
 837                         if (node1->next->base > node1->next->next->base) {
 838                                 out_of_order++;
 839                                 node2 = node1->next;
 840                                 node1->next = node1->next->next;
 841                                 node1 = node1->next;
 842                                 node2->next = node1->next;
 843                                 node1->next = node2;
 844                         } else
 845                                 node1 = node1->next;
 846                 }
 847         }  /* End of out_of_order loop */
 848
 849         node1 = *head;
 850
 851         while (node1 && node1->next) {
 852                 if ((node1->base + node1->length) == node1->next->base) {
 853                         /* Combine */
 854                         dbg("8..\n");
 855                         node1->length += node1->next->length;
 856                         node2 = node1->next;
 857                         node1->next = node1->next->next;
 858                         kfree(node2);
 859                 } else
 860                         node1 = node1->next;
 861         }
 862
 863         return(0);
 864 }
 865
 866
 867 /**
 868  * pciehp_slot_create - Creates a node and adds it to the proper bus.
 869  * @busnumber - bus where new node is to be located
 870  *
 871  * Returns pointer to the new node or NULL if unsuccessful
 872  */
 873 struct pci_func *pciehp_slot_create(u8 busnumber)
 874 {
 875         struct pci_func *new_slot;
 876         struct pci_func *next;
 877         dbg("%s: busnumber %x\n", __FUNCTION__, busnumber);
 878         new_slot = (struct pci_func *) kmalloc(sizeof(struct pci_func), GFP_KERNEL);
 879
 880         if (new_slot == NULL) {
 881                 return(new_slot);
 882         }
 883
 884         memset(new_slot, 0, sizeof(struct pci_func));
 885
 886         new_slot->next = NULL;
 887         new_slot->configured = 1;
 888
 889         if (pciehp_slot_list[busnumber] == NULL) {
 890                 pciehp_slot_list[busnumber] = new_slot;
 891         } else {
 892                 next = pciehp_slot_list[busnumber];
 893                 while (next->next != NULL)
 894                         next = next->next;
 895                 next->next = new_slot;
 896         }
 897         return(new_slot);
 898 }
 899
 900
 901 /*
 902  * slot_remove - Removes a node from the linked list of slots.
 903  * @old_slot: slot to remove
 904  *
 905  * Returns 0 if successful, !0 otherwise.
 906  */
 907 static int slot_remove(struct pci_func * old_slot)
 908 {
 909         struct pci_func *next;
 910
 911         if (old_slot == NULL)
 912                 return(1);
 913
 914         next = pciehp_slot_list[old_slot->bus];
 915
 916         if (next == NULL) {
 917                 return(1);
 918         }
 919
 920         if (next == old_slot) {
 921                 pciehp_slot_list[old_slot->bus] = old_slot->next;
 922                 pciehp_destroy_board_resources(old_slot);
 923                 kfree(old_slot);
 924                 return(0);
 925         }
 926
 927         while ((next->next != old_slot) && (next->next != NULL)) {
 928                 next = next->next;
 929         }
 930
 931         if (next->next == old_slot) {
 932                 next->next = old_slot->next;
 933                 pciehp_destroy_board_resources(old_slot);
 934                 kfree(old_slot);
 935                 return(0);
 936         } else
 937                 return(2);
 938 }
 939
 940
 941 /**
 942  * bridge_slot_remove - Removes a node from the linked list of slots.
 943  * @bridge: bridge to remove
 944  *
 945  * Returns 0 if successful, !0 otherwise.
 946  */
 947 static int bridge_slot_remove(struct pci_func *bridge)
 948 {
 949         u8 subordinateBus, secondaryBus;
 950         u8 tempBus;
 951         struct pci_func *next;
 952
 953         if (bridge == NULL)
 954                 return(1);
 955
 956         secondaryBus = (bridge->config_space[0x06] >> 8) & 0xFF;
 957         subordinateBus = (bridge->config_space[0x06] >> 16) & 0xFF;
 958
 959         for (tempBus = secondaryBus; tempBus <= subordinateBus; tempBus++) {
 960                 next = pciehp_slot_list[tempBus];
 961
 962                 while (!slot_remove(next)) {
 963                         next = pciehp_slot_list[tempBus];
 964                 }
 965         }
 966
 967         next = pciehp_slot_list[bridge->bus];
 968
 969         if (next == NULL) {
 970                 return(1);
 971         }
 972
 973         if (next == bridge) {
 974                 pciehp_slot_list[bridge->bus] = bridge->next;
 975                 kfree(bridge);
 976                 return(0);
 977         }
 978
 979         while ((next->next != bridge) && (next->next != NULL)) {
 980                 next = next->next;
 981         }
 982
 983         if (next->next == bridge) {
 984                 next->next = bridge->next;
 985                 kfree(bridge);
 986                 return(0);
 987         } else
 988                 return(2);
 989 }
 990
 991
 992 /**
 993  * pciehp_slot_find - Looks for a node by bus, and device, multiple functions accessed
 994  * @bus: bus to find
 995  * @device: device to find
 996  * @index: is 0 for first function found, 1 for the second...
 997  *
 998  * Returns pointer to the node if successful, %NULL otherwise.
 999  */
1000 struct pci_func *pciehp_slot_find(u8 bus, u8 device, u8 index)
1001 {
1002         int found = -1;
1003         struct pci_func *func;
1004
1005         func = pciehp_slot_list[bus];
1006         dbg("%s: bus %x device %x index %x\n",
1007                 __FUNCTION__, bus, device, index);
1008         if (func != NULL) {
1009                 dbg("%s: func-> bus %x device %x function %x pci_dev %p\n",
1010                         __FUNCTION__, func->bus, func->device, func->function,
1011                         func->pci_dev);
1012         } else
1013                 dbg("%s: func == NULL\n", __FUNCTION__);
1014
1015         if ((func == NULL) || ((func->device == device) && (index == 0)))
1016                 return(func);
1017
1018         if (func->device == device)
1019                 found++;
1020
1021         while (func->next != NULL) {
1022                 func = func->next;
1023
1024                 dbg("%s: In while loop, func-> bus %x device %x function %x pci_dev %p\n",
1025                         __FUNCTION__, func->bus, func->device, func->function,
1026                         func->pci_dev);
1027                 if (func->device == device)
1028                         found++;
1029                 dbg("%s: while loop, found %d, index %d\n", __FUNCTION__,
1030                         found, index);
1031
1032                 if ((found == index) ||(func->function == index)) {
1033                         dbg("%s: Found bus %x dev %x func %x\n", __FUNCTION__,
1034                         func->bus, func->device, func->function);
1035                         return(func);
1036                 }
1037         }
1038
1039         return(NULL);
1040 }
1041
1042 static int is_bridge(struct pci_func * func)
1043 {
1044         /* Check the header type */
1045         if (((func->config_space[0x03] >> 16) & 0xFF) == 0x01)
1046                 return 1;
1047         else
1048                 return 0;
1049 }
1050
1051
1052 /* the following routines constitute the bulk of the
1053    hotplug controller logic
1054  */
1055
1056 static void set_slot_off(struct controller *ctrl, struct slot * pslot)
1057 {
1058         /* Wait for exclusive access to hardware */
1059         down(&ctrl->crit_sect);
1060
1061         /* turn off slot, turn on Amber LED, turn off Green LED */
1062         if (pslot->hpc_ops->power_off_slot(pslot)) {
1063                 err("%s: Issue of Slot Power Off command failed\n", __FUNCTION__);
1064                 up(&ctrl->crit_sect);
1065                 return;
1066         }
1067         wait_for_ctrl_irq (ctrl);
1068
1069         pslot->hpc_ops->green_led_off(pslot);
1070
1071         wait_for_ctrl_irq (ctrl);
1072
1073         /* turn on Amber LED */
1074         if (pslot->hpc_ops->set_attention_status(pslot, 1)) {
1075                 err("%s: Issue of Set Attention Led command failed\n", __FUNCTION__);
1076                 up(&ctrl->crit_sect);
1077                 return;
1078         }
1079         wait_for_ctrl_irq (ctrl);
1080
1081         /* Done with exclusive hardware access */
1082         up(&ctrl->crit_sect);
1083 }
1084
1085 /**
1086  * board_added - Called after a board has been added to the system.
1087  *
1088  * Turns power on for the board
1089  * Configures board
1090  *
1091  */
1092 static u32 board_added(struct pci_func * func, struct controller * ctrl)
1093 {
1094         u8 hp_slot;
1095         int index;
1096         u32 temp_register = 0xFFFFFFFF;
1097         u32 rc = 0;
1098         struct pci_func *new_func = NULL;
1099         struct slot *p_slot;
1100         struct resource_lists res_lists;
1101
1102         p_slot = pciehp_find_slot(ctrl, func->device);
1103         hp_slot = func->device - ctrl->slot_device_offset;
1104
1105         dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n",
1106                 __FUNCTION__, func->device, ctrl->slot_device_offset, hp_slot);
1107
1108         /* Wait for exclusive access to hardware */
1109         down(&ctrl->crit_sect);
1110
1111         /* Power on slot */
1112         rc = p_slot->hpc_ops->power_on_slot(p_slot);
1113         if (rc) {
1114                 up(&ctrl->crit_sect);
1115                 return -1;
1116         }
1117
1118         /* Wait for the command to complete */
1119         wait_for_ctrl_irq(ctrl);
1120
1121         dbg("%s: after power on\n", __FUNCTION__);
1122
1123         p_slot->hpc_ops->green_led_blink(p_slot);
1124
1125         /* Wait for the command to complete */
1126         wait_for_ctrl_irq(ctrl);
1127         dbg("%s: after green_led_blink", __FUNCTION__);
1128
1129         /* Done with exclusive hardware access */
1130         up(&ctrl->crit_sect);
1131
1132         /* Wait for ~1 second */
1133         dbg("%s: before long_delay\n", __FUNCTION__);
1134         wait_for_ctrl_irq (ctrl);
1135         dbg("%s: afterlong_delay\n", __FUNCTION__);
1136
1137         dbg("%s: before check link status", __FUNCTION__);
1138         /*  Check link training status */
1139         rc = p_slot->hpc_ops->check_lnk_status(ctrl);
1140         if (rc) {
1141                 err("%s: Failed to check link status\n", __FUNCTION__);
1142                 set_slot_off(ctrl, p_slot);
1143                 return -1;
1144         }
1145
1146         dbg("%s: func status = %x\n", __FUNCTION__, func->status);
1147
1148         /* Check for a power fault */
1149         if (func->status == 0xFF) {
1150                 /* power fault occurred, but it was benign */
1151                 temp_register = 0xFFFFFFFF;
1152                 dbg("%s: temp register set to %x by power fault\n",
1153                         __FUNCTION__, temp_register);
1154                 rc = POWER_FAILURE;
1155                 func->status = 0;
1156         } else {
1157                 /* Get vendor/device ID u32 */
1158                 rc = pci_bus_read_config_dword (ctrl->pci_dev->subordinate,
1159                         PCI_DEVFN(func->device, func->function), PCI_VENDOR_ID, &temp_register);
1160                 dbg("%s: pci_bus_read_config_dword returns %d\n", __FUNCTION__, rc);
1161                 dbg("%s: temp_register is %x\n", __FUNCTION__, temp_register);
1162
1163                 if (rc != 0) {
1164                         /* Something's wrong here */
1165                         temp_register = 0xFFFFFFFF;
1166                         dbg("%s: temp register set to %x by error\n", __FUNCTION__,
1167                                 temp_register);
1168                 }
1169                 /* Preset return code.  It will be changed later if things go okay. */
1170                 rc = NO_ADAPTER_PRESENT;
1171         }
1172
1173         /* All F's is an empty slot or an invalid board */
1174         if (temp_register != 0xFFFFFFFF) {        /* Check for a board in the slot */
1175                 res_lists.io_head = ctrl->io_head;
1176                 res_lists.mem_head = ctrl->mem_head;
1177                 res_lists.p_mem_head = ctrl->p_mem_head;
1178                 res_lists.bus_head = ctrl->bus_head;
1179                 res_lists.irqs = NULL;
1180
1181                 rc = configure_new_device(ctrl, func, 0, &res_lists, 0, 0);
1182                 dbg("%s: back from configure_new_device\n", __FUNCTION__);
1183
1184                 ctrl->io_head = res_lists.io_head;
1185                 ctrl->mem_head = res_lists.mem_head;
1186                 ctrl->p_mem_head = res_lists.p_mem_head;
1187                 ctrl->bus_head = res_lists.bus_head;
1188
1189                 pciehp_resource_sort_and_combine(&(ctrl->mem_head));
1190                 pciehp_resource_sort_and_combine(&(ctrl->p_mem_head));
1191                 pciehp_resource_sort_and_combine(&(ctrl->io_head));
1192                 pciehp_resource_sort_and_combine(&(ctrl->bus_head));
1193
1194                 if (rc) {
1195                         set_slot_off(ctrl, p_slot);
1196                         return(rc);
1197                 }
1198                 pciehp_save_slot_config(ctrl, func);
1199
1200                 func->status = 0;
1201                 func->switch_save = 0x10;
1202                 func->is_a_board = 0x01;
1203
1204                 /* Next, we will instantiate the linux pci_dev structures
1205                  * (with appropriate driver notification, if already present)
1206                  */
1207                 index = 0;
1208                 do {
1209                         new_func = pciehp_slot_find(ctrl->slot_bus, func->device, index++);
1210                         if (new_func && !new_func->pci_dev) {
1211                                 dbg("%s:call pci_hp_configure_dev, func %x\n",
1212                                         __FUNCTION__, index);
1213                                 pciehp_configure_device(ctrl, new_func);
1214                         }
1215                 } while (new_func);
1216
1217                 /* Wait for exclusive access to hardware */
1218                 down(&ctrl->crit_sect);
1219
1220                 p_slot->hpc_ops->green_led_on(p_slot);
1221
1222                 /* Wait for the command to complete */
1223                 wait_for_ctrl_irq(ctrl);
1224
1225                 /* Done with exclusive hardware access */
1226                 up(&ctrl->crit_sect);
1227
1228         } else {
1229                 set_slot_off(ctrl, p_slot);
1230                 return -1;
1231         }
1232         return 0;
1233 }
1234
1235
1236 /**
1237  * remove_board - Turns off slot and LED's
1238  *
1239  */
1240 static u32 remove_board(struct pci_func *func, struct controller *ctrl)
1241 {
1242         int index;
1243         u8 skip = 0;
1244         u8 device;
1245         u8 hp_slot;
1246         u32 rc;
1247         struct resource_lists res_lists;
1248         struct pci_func *temp_func;
1249         struct slot *p_slot;
1250
1251         if (func == NULL)
1252                 return(1);
1253
1254         if (pciehp_unconfigure_device(func))
1255                 return(1);
1256
1257         device = func->device;
1258
1259         hp_slot = func->device - ctrl->slot_device_offset;
1260         p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
1261
1262         dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
1263
1264         if ((ctrl->add_support) &&
1265                 !(func->bus_head || func->mem_head || func->p_mem_head || func->io_head)) {
1266                 /* Here we check to see if we've saved any of the board's
1267                  * resources already.  If so, we'll skip the attempt to
1268                  * determine what's being used.
1269                  */
1270                 index = 0;
1271
1272                 temp_func = func;
1273
1274                 while ((temp_func = pciehp_slot_find(temp_func->bus, temp_func->device,
1275                         index++))) {
1276                         if (temp_func->bus_head || temp_func->mem_head
1277                             || temp_func->p_mem_head || temp_func->io_head) {
1278                                 skip = 1;
1279                                 break;
1280                         }
1281                 }
1282
1283                 if (!skip)
1284                         rc = pciehp_save_used_resources(ctrl, func, DISABLE_CARD);
1285         }
1286         /* Change status to shutdown */
1287         if (func->is_a_board)
1288                 func->status = 0x01;
1289         func->configured = 0;
1290
1291         /* Wait for exclusive access to hardware */
1292         down(&ctrl->crit_sect);
1293
1294         /* Power off slot */
1295         rc = p_slot->hpc_ops->power_off_slot(p_slot);
1296         if (rc) {
1297                 err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
1298                 up(&ctrl->crit_sect);
1299                 return rc;
1300         }
1301         /* Wait for the command to complete */
1302         wait_for_ctrl_irq(ctrl);
1303
1304         /* Turn off Green LED */
1305         p_slot->hpc_ops->green_led_off(p_slot);
1306
1307         /* Wait for the command to complete */
1308         wait_for_ctrl_irq(ctrl);
1309
1310         /* Done with exclusive hardware access */
1311         up(&ctrl->crit_sect);
1312
1313         if (ctrl->add_support) {
1314                 while (func) {
1315                         res_lists.io_head = ctrl->io_head;
1316                         res_lists.mem_head = ctrl->mem_head;
1317                         res_lists.p_mem_head = ctrl->p_mem_head;
1318                         res_lists.bus_head = ctrl->bus_head;
1319
1320                         dbg("Returning resources to ctlr lists for (B/D/F) = (%#x/%#x/%#x)\n",
1321                                  func->bus, func->device, func->function);
1322
1323                         pciehp_return_board_resources(func, &res_lists);
1324
1325                         ctrl->io_head = res_lists.io_head;
1326                         ctrl->mem_head = res_lists.mem_head;
1327                         ctrl->p_mem_head = res_lists.p_mem_head;
1328                         ctrl->bus_head = res_lists.bus_head;
1329
1330                         pciehp_resource_sort_and_combine(&(ctrl->mem_head));
1331                         pciehp_resource_sort_and_combine(&(ctrl->p_mem_head));
1332                         pciehp_resource_sort_and_combine(&(ctrl->io_head));
1333                         pciehp_resource_sort_and_combine(&(ctrl->bus_head));
1334
1335                         if (is_bridge(func)) {
1336                                 dbg("PCI Bridge Hot-Remove s:b:d:f(%02x:%02x:%02x:%02x)\n",
1337                                         ctrl->seg, func->bus, func->device, func->function);
1338                                 bridge_slot_remove(func);
1339                         } else
1340                                 dbg("PCI Function Hot-Remove s:b:d:f(%02x:%02x:%02x:%02x)\n",
1341                                          ctrl->seg, func->bus, func->device, func->function);
1342                                 slot_remove(func);
1343
1344                         func = pciehp_slot_find(ctrl->slot_bus, device, 0);
1345                 }
1346
1347                 /* Setup slot structure with entry for empty slot */
1348                 func = pciehp_slot_create(ctrl->slot_bus);
1349
1350                 if (func == NULL) {
1351                         return(1);
1352                 }
1353
1354                 func->bus = ctrl->slot_bus;
1355                 func->device = device;
1356                 func->function = 0;
1357                 func->configured = 0;
1358                 func->switch_save = 0x10;
1359                 func->is_a_board = 0;
1360         }
1361         return 0;
1362 }
1363
1364
1365 static void pushbutton_helper_thread (unsigned long data)
1366 {
1367         pushbutton_pending = data;
1368         up(&event_semaphore);
1369 }
1370
1371
1372 /* this is the main worker thread */
1373 static int event_thread(void* data)
1374 {
1375         struct controller *ctrl;
1376         lock_kernel();
1377         daemonize();
1378
1379         /* New name */
1380         strcpy(current->comm, "pciehpd_event");
1381
1382         unlock_kernel();
1383
1384         while (1) {
1385                 dbg("!!!!event_thread sleeping\n");
1386                 down_interruptible (&event_semaphore);
1387                 dbg("event_thread woken finished = %d\n", event_finished);
1388                 if (event_finished || signal_pending(current))
1389                         break;
1390                 /* Do stuff here */
1391                 if (pushbutton_pending)
1392                         pciehp_pushbutton_thread(pushbutton_pending);
1393                 else
1394                         for (ctrl = pciehp_ctrl_list; ctrl; ctrl=ctrl->next)
1395                                 interrupt_event_handler(ctrl);
1396         }
1397         dbg("event_thread signals exit\n");
1398         up(&event_exit);
1399         return 0;
1400 }
1401
1402 int pciehp_event_start_thread (void)
1403 {
1404         int pid;
1405
1406         /* Initialize our semaphores */
1407         init_MUTEX_LOCKED(&event_exit);
1408         event_finished=0;
1409
1410         init_MUTEX_LOCKED(&event_semaphore);
1411         pid = kernel_thread(event_thread, 0, 0);
1412
1413         if (pid < 0) {
1414                 err ("Can't start up our event thread\n");
1415                 return -1;
1416         }
1417         dbg("Our event thread pid = %d\n", pid);
1418         return 0;
1419 }
1420
1421
1422 void pciehp_event_stop_thread (void)
1423 {
1424         event_finished = 1;
1425         dbg("event_thread finish command given\n");
1426         up(&event_semaphore);
1427         dbg("wait for event_thread to exit\n");
1428         down(&event_exit);
1429 }
1430
1431
1432 static int update_slot_info (struct slot *slot)
1433 {
1434         struct hotplug_slot_info *info;
1435         char buffer[SLOT_NAME_SIZE];
1436         int result;
1437
1438         info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL);
1439         if (!info)
1440                 return -ENOMEM;
1441
1442         make_slot_name (&buffer[0], SLOT_NAME_SIZE, slot);
1443
1444         slot->hpc_ops->get_power_status(slot, &(info->power_status));
1445         slot->hpc_ops->get_attention_status(slot, &(info->attention_status));
1446         slot->hpc_ops->get_latch_status(slot, &(info->latch_status));
1447         slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status));
1448
1449         result = pci_hp_change_slot_info(buffer, info);
1450         kfree (info);
1451         return result;
1452 }
1453
1454 static void interrupt_event_handler(struct controller *ctrl)
1455 {
1456         int loop = 0;
1457         int change = 1;
1458         struct pci_func *func;
1459         u8 hp_slot;
1460         u8 getstatus;
1461         struct slot *p_slot;
1462
1463         while (change) {
1464                 change = 0;
1465
1466                 for (loop = 0; loop < 10; loop++) {
1467                         if (ctrl->event_queue[loop].event_type != 0) {
1468                                 hp_slot = ctrl->event_queue[loop].hp_slot;
1469
1470                                 func = pciehp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0);
1471
1472                                 p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
1473
1474                                 dbg("hp_slot %d, func %p, p_slot %p\n", hp_slot, func, p_slot);
1475
1476                                 if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) {
1477                                         dbg("button cancel\n");
1478                                         del_timer(&p_slot->task_event);
1479
1480                                         switch (p_slot->state) {
1481                                         case BLINKINGOFF_STATE:
1482                                                 /* Wait for exclusive access to hardware */
1483                                                 down(&ctrl->crit_sect);
1484
1485                                                 p_slot->hpc_ops->green_led_on(p_slot);
1486                                                 /* Wait for the command to complete */
1487                                                 wait_for_ctrl_irq(ctrl);
1488
1489                                                 p_slot->hpc_ops->set_attention_status(p_slot, 0);
1490
1491                                                 /* Wait for the command to complete */
1492                                                 wait_for_ctrl_irq(ctrl);
1493
1494                                                 /* Done with exclusive hardware access */
1495                                                 up(&ctrl->crit_sect);
1496                                                 break;
1497                                         case BLINKINGON_STATE:
1498                                                 /* Wait for exclusive access to hardware */
1499                                                 down(&ctrl->crit_sect);
1500
1501                                                 p_slot->hpc_ops->green_led_off(p_slot);
1502                                                 /* Wait for the command to complete */
1503                                                 wait_for_ctrl_irq(ctrl);
1504
1505                                                 p_slot->hpc_ops->set_attention_status(p_slot, 0);
1506                                                 /* Wait for the command to complete */
1507                                                 wait_for_ctrl_irq(ctrl);
1508
1509                                                 /* Done with exclusive hardware access */
1510                                                 up(&ctrl->crit_sect);
1511
1512                                                 break;
1513                                         default:
1514                                                 warn("Not a valid state\n");
1515                                                 return;
1516                                         }
1517                                         info(msg_button_cancel, p_slot->number);
1518                                         p_slot->state = STATIC_STATE;
1519                                 }
1520                                 /* ***********Button Pressed (No action on 1st press...) */
1521                                 else if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) {
1522                                         dbg("Button pressed\n");
1523
1524                                         p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
1525                                         if (getstatus) {
1526                                                 /* Slot is on */
1527                                                 dbg("Slot is on\n");
1528                                                 p_slot->state = BLINKINGOFF_STATE;
1529                                                 info(msg_button_off, p_slot->number);
1530                                         } else {
1531                                                 /* Slot is off */
1532                                                 dbg("Slot is off\n");
1533                                                 p_slot->state = BLINKINGON_STATE;
1534                                                 info(msg_button_on, p_slot->number);
1535                                         }
1536
1537                                         /* Wait for exclusive access to hardware */
1538                                         down(&ctrl->crit_sect);
1539
1540                                         /* blink green LED and turn off amber */
1541                                         p_slot->hpc_ops->green_led_blink(p_slot);
1542                                         /* Wait for the command to complete */
1543                                         wait_for_ctrl_irq(ctrl);
1544
1545                                         p_slot->hpc_ops->set_attention_status(p_slot, 0);
1546
1547                                         /* Wait for the command to complete */
1548                                         wait_for_ctrl_irq(ctrl);
1549
1550                                         /* Done with exclusive hardware access */
1551                                         up(&ctrl->crit_sect);
1552
1553                                         init_timer(&p_slot->task_event);
1554                                         p_slot->task_event.expires = jiffies + 5 * HZ;   /* 5 second delay */
1555                                         p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread;
1556                                         p_slot->task_event.data = (unsigned long) p_slot;
1557
1558                                         dbg("add_timer p_slot = %p\n", (void *) p_slot);
1559                                         add_timer(&p_slot->task_event);
1560                                 }
1561                                 /***********POWER FAULT********************/
1562                                 else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) {
1563                                         dbg("power fault\n");
1564                                         /* Wait for exclusive access to hardware */
1565                                         down(&ctrl->crit_sect);
1566
1567                                         p_slot->hpc_ops->set_attention_status(p_slot, 1);
1568                                         wait_for_ctrl_irq(ctrl);
1569
1570                                         p_slot->hpc_ops->green_led_off(p_slot);
1571                                         wait_for_ctrl_irq(ctrl);
1572
1573                                         /* Done with exclusive hardware access */
1574                                         up(&ctrl->crit_sect);
1575                                 } else {
1576                                         /* refresh notification */
1577                                         if (p_slot)
1578                                                 update_slot_info(p_slot);
1579                                 }
1580
1581                                 ctrl->event_queue[loop].event_type = 0;
1582
1583                                 change = 1;
1584                         }
1585                 }               /* End of FOR loop */
1586         }
1587
1588         return;
1589 }
1590
1591
1592 /**
1593  * pciehp_pushbutton_thread
1594  *
1595  * Scheduled procedure to handle blocking stuff for the pushbuttons
1596  * Handles all pending events and exits.
1597  *
1598  */
1599 void pciehp_pushbutton_thread (unsigned long slot)
1600 {
1601         struct slot *p_slot = (struct slot *) slot;
1602         u8 getstatus;
1603
1604         pushbutton_pending = 0;
1605
1606         if (!p_slot) {
1607                 dbg("%s: Error! slot NULL\n", __FUNCTION__);
1608                 return;
1609         }
1610
1611         p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
1612         if (getstatus) {
1613                 p_slot->state = POWEROFF_STATE;
1614                 dbg("In power_down_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device);
1615
1616                 pciehp_disable_slot(p_slot);
1617                 p_slot->state = STATIC_STATE;
1618         } else {
1619                 p_slot->state = POWERON_STATE;
1620                 dbg("In add_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device);
1621
1622                 if (pciehp_enable_slot(p_slot)) {
1623                         /* Wait for exclusive access to hardware */
1624                         down(&p_slot->ctrl->crit_sect);
1625
1626                         p_slot->hpc_ops->green_led_off(p_slot);
1627
1628                         /* Wait for the command to complete */
1629                         wait_for_ctrl_irq (p_slot->ctrl);
1630
1631                         /* Done with exclusive hardware access */
1632                         up(&p_slot->ctrl->crit_sect);
1633                 }
1634                 p_slot->state = STATIC_STATE;
1635         }
1636
1637         return;
1638 }
1639
1640
1641 int pciehp_enable_slot (struct slot *p_slot)
1642 {
1643         u8 getstatus = 0;
1644         int rc;
1645         struct pci_func *func;
1646
1647         func = pciehp_slot_find(p_slot->bus, p_slot->device, 0);
1648         if (!func) {
1649                 dbg("%s: Error! slot NULL\n", __FUNCTION__);
1650                 return (1);
1651         }
1652
1653         /* Check to see if (latch closed, card present, power off) */
1654         down(&p_slot->ctrl->crit_sect);
1655         rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
1656         if (rc || !getstatus) {
1657                 info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
1658                 up(&p_slot->ctrl->crit_sect);
1659                 return (1);
1660         }
1661
1662         rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
1663         if (rc || getstatus) {
1664                 info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
1665                 up(&p_slot->ctrl->crit_sect);
1666                 return (1);
1667         }
1668
1669         rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
1670         if (rc || getstatus) {
1671                 info("%s: already enabled on slot(%x)\n", __FUNCTION__, p_slot->number);
1672                 up(&p_slot->ctrl->crit_sect);
1673                 return (1);
1674         }
1675         up(&p_slot->ctrl->crit_sect);
1676
1677         slot_remove(func);
1678
1679         func = pciehp_slot_create(p_slot->bus);
1680         if (func == NULL)
1681                 return (1);
1682
1683         func->bus = p_slot->bus;
1684         func->device = p_slot->device;
1685         func->function = 0;
1686         func->configured = 0;
1687         func->is_a_board = 1;
1688
1689         /* We have to save the presence info for these slots */
1690         p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save));
1691         p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
1692         func->switch_save = !getstatus? 0x10:0;
1693
1694         rc = board_added(func, p_slot->ctrl);
1695         if (rc) {
1696                 if (is_bridge(func))
1697                         bridge_slot_remove(func);
1698                 else
1699                         slot_remove(func);
1700
1701                 /* Setup slot structure with entry for empty slot */
1702                 func = pciehp_slot_create(p_slot->bus);
1703                 if (func == NULL)
1704                         return (1);     /* Out of memory */
1705
1706                 func->bus = p_slot->bus;
1707                 func->device = p_slot->device;
1708                 func->function = 0;
1709                 func->configured = 0;
1710                 func->is_a_board = 1;
1711
1712                 /* We have to save the presence info for these slots */
1713                 p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save));
1714                 p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
1715                 func->switch_save = !getstatus? 0x10:0;
1716         }
1717
1718         if (p_slot)
1719                 update_slot_info(p_slot);
1720
1721         return rc;
1722 }
1723
1724
1725 int pciehp_disable_slot (struct slot *p_slot)
1726 {
1727         u8 class_code, header_type, BCR;
1728         u8 index = 0;
1729         u8 getstatus = 0;
1730         u32 rc = 0;
1731         int ret = 0;
1732         unsigned int devfn;
1733         struct pci_bus *pci_bus = p_slot->ctrl->pci_dev->subordinate;
1734         struct pci_func *func;
1735
1736         if (!p_slot->ctrl)
1737                 return (1);
1738
1739         /* Check to see if (latch closed, card present, power on) */
1740         down(&p_slot->ctrl->crit_sect);
1741
1742         ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
1743         if (ret || !getstatus) {
1744                 info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
1745                 up(&p_slot->ctrl->crit_sect);
1746                 return (1);
1747         }
1748
1749         ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
1750         if (ret || getstatus) {
1751                 info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
1752                 up(&p_slot->ctrl->crit_sect);
1753                 return (1);
1754         }
1755
1756         ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
1757         if (ret || !getstatus) {
1758                 info("%s: already disabled slot(%x)\n", __FUNCTION__, p_slot->number);
1759                 up(&p_slot->ctrl->crit_sect);
1760                 return (1);
1761         }
1762         up(&p_slot->ctrl->crit_sect);
1763
1764         func = pciehp_slot_find(p_slot->bus, p_slot->device, index++);
1765
1766         /* Make sure there are no video controllers here
1767          * for all func of p_slot
1768          */
1769         while (func && !rc) {
1770                 pci_bus->number = func->bus;
1771                 devfn = PCI_DEVFN(func->device, func->function);
1772
1773                 /* Check the Class Code */
1774                 rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code);
1775                 if (rc)
1776                         return rc;
1777
1778                 if (class_code == PCI_BASE_CLASS_DISPLAY) {
1779                         /* Display/Video adapter (not supported) */
1780                         rc = REMOVE_NOT_SUPPORTED;
1781                 } else {
1782                         /* See if it's a bridge */
1783                         rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
1784                         if (rc)
1785                                 return rc;
1786
1787                         /* If it's a bridge, check the VGA Enable bit */
1788                         if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
1789                                 rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_BRIDGE_CONTROL, &BCR);
1790                                 if (rc)
1791                                         return rc;
1792
1793                                 /* If the VGA Enable bit is set, remove isn't supported */
1794                                 if (BCR & PCI_BRIDGE_CTL_VGA) {
1795                                         rc = REMOVE_NOT_SUPPORTED;
1796                                 }
1797                         }
1798                 }
1799
1800                 func = pciehp_slot_find(p_slot->bus, p_slot->device, index++);
1801         }
1802
1803         func = pciehp_slot_find(p_slot->bus, p_slot->device, 0);
1804         if ((func != NULL) && !rc) {
1805                 rc = remove_board(func, p_slot->ctrl);
1806         } else if (!rc)
1807                 rc = 1;
1808
1809         if (p_slot)
1810                 update_slot_info(p_slot);
1811
1812         return(rc);
1813 }
1814
1815
1816 /**
1817  * configure_new_device - Configures the PCI header information of one board.
1818  *
1819  * @ctrl: pointer to controller structure
1820  * @func: pointer to function structure
1821  * @behind_bridge: 1 if this is a recursive call, 0 if not
1822  * @resources: pointer to set of resource lists
1823  *
1824  * Returns 0 if success
1825  *
1826  */
1827 static u32 configure_new_device (struct controller * ctrl, struct pci_func * func,
1828         u8 behind_bridge, struct resource_lists * resources, u8 bridge_bus, u8 bridge_dev)
1829 {
1830         u8 temp_byte, function, max_functions, stop_it;
1831         int rc;
1832         u32 ID;
1833         struct pci_func *new_slot;
1834         struct pci_bus lpci_bus, *pci_bus;
1835         int index;
1836
1837         new_slot = func;
1838
1839         dbg("%s\n", __FUNCTION__);
1840
1841         memcpy(&lpci_bus, ctrl->pci_dev->subordinate, sizeof(lpci_bus));
1842         pci_bus = &lpci_bus;
1843         pci_bus->number = func->bus;
1844
1845         /* Check for Multi-function device */
1846         rc = pci_bus_read_config_byte(pci_bus, PCI_DEVFN(func->device, func->function), 0x0E, &temp_byte);
1847         if (rc) {
1848                 dbg("%s: rc = %d\n", __FUNCTION__, rc);
1849                 return rc;
1850         }
1851
1852         if (temp_byte & 0x80)   /* Multi-function device */
1853                 max_functions = 8;
1854         else
1855                 max_functions = 1;
1856
1857         function = 0;
1858
1859         do {
1860                 rc = configure_new_function(ctrl, new_slot, behind_bridge, resources, bridge_bus, bridge_dev);
1861
1862                 if (rc) {
1863                         dbg("configure_new_function failed %d\n",rc);
1864                         index = 0;
1865
1866                         while (new_slot) {
1867                                 new_slot = pciehp_slot_find(new_slot->bus, new_slot->device, index++);
1868
1869                                 if (new_slot)
1870                                         pciehp_return_board_resources(new_slot, resources);
1871                         }
1872
1873                         return(rc);
1874                 }
1875
1876                 function++;
1877
1878                 stop_it = 0;
1879
1880                 /*  The following loop skips to the next present function
1881                  *  and creates a board structure
1882                  */
1883
1884                 while ((function < max_functions) && (!stop_it)) {
1885                         pci_bus_read_config_dword(pci_bus, PCI_DEVFN(func->device, function), 0x00, &ID);
1886
1887                         if (ID == 0xFFFFFFFF) {   /* There's nothing there. */
1888                                 function++;
1889                         } else {  /* There's something there */
1890                                 /* Setup slot structure. */
1891                                 new_slot = pciehp_slot_create(func->bus);
1892
1893                                 if (new_slot == NULL) {
1894                                         /* Out of memory */
1895                                         return(1);
1896                                 }
1897
1898                                 new_slot->bus = func->bus;
1899                                 new_slot->device = func->device;
1900                                 new_slot->function = function;
1901                                 new_slot->is_a_board = 1;
1902                                 new_slot->status = 0;
1903
1904                                 stop_it++;
1905                         }
1906                 }
1907
1908         } while (function < max_functions);
1909         dbg("returning from configure_new_device\n");
1910
1911         return 0;
1912 }
1913
1914
1915 /*
1916  * Configuration logic that involves the hotplug data structures and
1917  * their bookkeeping
1918  */
1919
1920
1921 /**
1922  * configure_new_function - Configures the PCI header information of one device
1923  *
1924  * @ctrl: pointer to controller structure
1925  * @func: pointer to function structure
1926  * @behind_bridge: 1 if this is a recursive call, 0 if not
1927  * @resources: pointer to set of resource lists
1928  *
1929  * Calls itself recursively for bridged devices.
1930  * Returns 0 if success
1931  *
1932  */
1933 static int configure_new_function (struct controller * ctrl, struct pci_func * func,
1934         u8 behind_bridge, struct resource_lists *resources, u8 bridge_bus, u8 bridge_dev)
1935 {
1936         int cloop;
1937         u8 temp_byte;
1938         u8 device;
1939         u8 class_code;
1940         u16 temp_word;
1941         u32 rc;
1942         u32 temp_register;
1943         u32 base;
1944         u32 ID;
1945         unsigned int devfn;
1946         struct pci_resource *mem_node;
1947         struct pci_resource *p_mem_node;
1948         struct pci_resource *io_node;
1949         struct pci_resource *bus_node;
1950         struct pci_resource *hold_mem_node;
1951         struct pci_resource *hold_p_mem_node;
1952         struct pci_resource *hold_IO_node;
1953         struct pci_resource *hold_bus_node;
1954         struct irq_mapping irqs;
1955         struct pci_func *new_slot;
1956         struct pci_bus lpci_bus, *pci_bus;
1957         struct resource_lists temp_resources;
1958
1959         memcpy(&lpci_bus, ctrl->pci_dev->subordinate, sizeof(lpci_bus));
1960         pci_bus = &lpci_bus;
1961         pci_bus->number = func->bus;
1962         devfn = PCI_DEVFN(func->device, func->function);
1963
1964         /* Check for Bridge */
1965         rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &temp_byte);
1966         if (rc)
1967                 return rc;
1968         dbg("%s: bus %x dev %x func %x temp_byte = %x\n", __FUNCTION__,
1969                 func->bus, func->device, func->function, temp_byte);
1970
1971         if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { /* PCI-PCI Bridge */
1972                 /* Set Primary bus */
1973                 dbg("set Primary bus = 0x%x\n", func->bus);
1974                 rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_PRIMARY_BUS, func->bus);
1975                 if (rc)
1976                         return rc;
1977
1978                 /* Find range of busses to use */
1979                 bus_node = get_max_resource(&resources->bus_head, 1L);
1980
1981                 /* If we don't have any busses to allocate, we can't continue */
1982                 if (!bus_node) {
1983                         err("Got NO bus resource to use\n");
1984                         return -ENOMEM;
1985                 }
1986                 dbg("Got ranges of buses to use: base:len=0x%x:%x\n", bus_node->base, bus_node->length);
1987
1988                 /* Set Secondary bus */
1989                 dbg("set Secondary bus = 0x%x\n", temp_byte);
1990                 dbg("func->bus %x\n", func->bus);
1991
1992                 temp_byte = (u8)bus_node->base;
1993                 dbg("set Secondary bus = 0x%x\n", temp_byte);
1994                 rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, temp_byte);
1995                 if (rc)
1996                         return rc;
1997
1998                 /* set subordinate bus */
1999                 temp_byte = (u8)(bus_node->base + bus_node->length - 1);
2000                 dbg("set subordinate bus = 0x%x\n", temp_byte);
2001                 rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
2002                 if (rc)
2003                         return rc;
2004
2005                 /* Set HP parameters (Cache Line Size, Latency Timer) */
2006                 rc = pciehprm_set_hpp(ctrl, func, PCI_HEADER_TYPE_BRIDGE);
2007                 if (rc)
2008                         return rc;
2009
2010                 /* Setup the IO, memory, and prefetchable windows */
2011
2012                 io_node = get_max_resource(&(resources->io_head), 0x1000L);
2013                 if (io_node) {
2014                         dbg("io_node(base, len, next) (%x, %x, %p)\n", io_node->base, io_node->length, io_node->next);
2015                 }
2016
2017                 mem_node = get_max_resource(&(resources->mem_head), 0x100000L);
2018                 if (mem_node) {
2019                         dbg("mem_node(base, len, next) (%x, %x, %p)\n", mem_node->base, mem_node->length, mem_node->next);
2020                 }
2021
2022                 if (resources->p_mem_head)
2023                         p_mem_node = get_max_resource(&(resources->p_mem_head), 0x100000L);
2024                 else {
2025                         /*
2026                          * In some platform implementation, MEM and PMEM are not
2027                          *  distinguished, and hence ACPI _CRS has only MEM entries
2028                          *  for both MEM and PMEM.
2029                          */
2030                         dbg("using MEM for PMEM\n");
2031                         p_mem_node = get_max_resource(&(resources->mem_head), 0x100000L);
2032                 }
2033                 if (p_mem_node) {
2034                         dbg("p_mem_node(base, len, next) (%x, %x, %p)\n", p_mem_node->base, p_mem_node->length, p_mem_node->next);
2035                 }
2036
2037                 /* Set up the IRQ info */
2038                 if (!resources->irqs) {
2039                         irqs.barber_pole = 0;
2040                         irqs.interrupt[0] = 0;
2041                         irqs.interrupt[1] = 0;
2042                         irqs.interrupt[2] = 0;
2043                         irqs.interrupt[3] = 0;
2044                         irqs.valid_INT = 0;
2045                 } else {
2046                         irqs.barber_pole = resources->irqs->barber_pole;
2047                         irqs.interrupt[0] = resources->irqs->interrupt[0];
2048                         irqs.interrupt[1] = resources->irqs->interrupt[1];
2049                         irqs.interrupt[2] = resources->irqs->interrupt[2];
2050                         irqs.interrupt[3] = resources->irqs->interrupt[3];
2051                         irqs.valid_INT = resources->irqs->valid_INT;
2052                 }
2053
2054                 /* Set up resource lists that are now aligned on top and bottom
2055                  * for anything behind the bridge.
2056                  */
2057                 temp_resources.bus_head = bus_node;
2058                 temp_resources.io_head = io_node;
2059                 temp_resources.mem_head = mem_node;
2060                 temp_resources.p_mem_head = p_mem_node;
2061                 temp_resources.irqs = &irqs;
2062
2063                 /* Make copies of the nodes we are going to pass down so that
2064                  * if there is a problem,we can just use these to free resources
2065                  */
2066                 hold_bus_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
2067                 hold_IO_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
2068                 hold_mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
2069                 hold_p_mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
2070
2071                 if (!hold_bus_node || !hold_IO_node || !hold_mem_node || !hold_p_mem_node) {
2072                         if (hold_bus_node)
2073                                 kfree(hold_bus_node);
2074                         if (hold_IO_node)
2075                                 kfree(hold_IO_node);
2076                         if (hold_mem_node)
2077                                 kfree(hold_mem_node);
2078                         if (hold_p_mem_node)
2079                                 kfree(hold_p_mem_node);
2080
2081                         return(1);
2082                 }
2083
2084                 memcpy(hold_bus_node, bus_node, sizeof(struct pci_resource));
2085
2086                 bus_node->base += 1;
2087                 bus_node->length -= 1;
2088                 bus_node->next = NULL;
2089
2090                 /* If we have IO resources copy them and fill in the bridge's
2091                  * IO range registers
2092                  */
2093                 if (io_node) {
2094                         memcpy(hold_IO_node, io_node, sizeof(struct pci_resource));
2095                         io_node->next = NULL;
2096
2097                         /* set IO base and Limit registers */
2098                         RES_CHECK(io_node->base, 8);
2099                         temp_byte = (u8)(io_node->base >> 8);
2100                         rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_BASE, temp_byte);
2101
2102                         RES_CHECK(io_node->base + io_node->length - 1, 8);
2103                         temp_byte = (u8)((io_node->base + io_node->length - 1) >> 8);
2104                         rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
2105                 } else {
2106                         kfree(hold_IO_node);
2107                         hold_IO_node = NULL;
2108                 }
2109
2110                 /* If we have memory resources copy them and fill in the bridge's
2111                  * memory range registers.  Otherwise, fill in the range
2112                  * registers with values that disable them.
2113                  */
2114                 if (mem_node) {
2115                         memcpy(hold_mem_node, mem_node, sizeof(struct pci_resource));
2116                         mem_node->next = NULL;
2117
2118                         /* set Mem base and Limit registers */
2119                         RES_CHECK(mem_node->base, 16);
2120                         temp_word = (u32)(mem_node->base >> 16);
2121                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
2122
2123                         RES_CHECK(mem_node->base + mem_node->length - 1, 16);
2124                         temp_word = (u32)((mem_node->base + mem_node->length - 1) >> 16);
2125                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
2126                 } else {
2127                         temp_word = 0xFFFF;
2128                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
2129
2130                         temp_word = 0x0000;
2131                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
2132
2133                         kfree(hold_mem_node);
2134                         hold_mem_node = NULL;
2135                 }
2136
2137                 /* If we have prefetchable memory resources copy them and
2138                  * fill in the bridge's memory range registers.  Otherwise,
2139                  * fill in the range registers with values that disable them.
2140                  */
2141                 if (p_mem_node) {
2142                         memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource));
2143                         p_mem_node->next = NULL;
2144
2145                         /* Set Pre Mem base and Limit registers */
2146                         RES_CHECK(p_mem_node->base, 16);
2147                         temp_word = (u32)(p_mem_node->base >> 16);
2148                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
2149
2150                         RES_CHECK(p_mem_node->base + p_mem_node->length - 1, 16);
2151                         temp_word = (u32)((p_mem_node->base + p_mem_node->length - 1) >> 16);
2152                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
2153                 } else {
2154                         temp_word = 0xFFFF;
2155                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
2156
2157                         temp_word = 0x0000;
2158                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
2159
2160                         kfree(hold_p_mem_node);
2161                         hold_p_mem_node = NULL;
2162                 }
2163
2164                 /* Adjust this to compensate for extra adjustment in first loop */
2165                 irqs.barber_pole--;
2166
2167                 rc = 0;
2168
2169                 /* Here we actually find the devices and configure them */
2170                 for (device = 0; (device <= 0x1F) && !rc; device++) {
2171                         irqs.barber_pole = (irqs.barber_pole + 1) & 0x03;
2172
2173                         ID = 0xFFFFFFFF;
2174                         pci_bus->number = hold_bus_node->base;
2175                         pci_bus_read_config_dword (pci_bus, PCI_DEVFN(device, 0), PCI_VENDOR_ID, &ID);
2176                         pci_bus->number = func->bus;
2177
2178                         if (ID != 0xFFFFFFFF) {   /*  device Present */
2179                                 /* Setup slot structure. */
2180                                 new_slot = pciehp_slot_create(hold_bus_node->base);
2181
2182                                 if (new_slot == NULL) {
2183                                         /* Out of memory */
2184                                         rc = -ENOMEM;
2185                                         continue;
2186                                 }
2187
2188                                 new_slot->bus = hold_bus_node->base;
2189                                 new_slot->device = device;
2190                                 new_slot->function = 0;
2191                                 new_slot->is_a_board = 1;
2192                                 new_slot->status = 0;
2193
2194                                 rc = configure_new_device(ctrl, new_slot, 1, &temp_resources, func->bus, func->device);
2195                                 dbg("configure_new_device rc=0x%x\n",rc);
2196                         }       /* End of IF (device in slot?) */
2197                 }               /* End of FOR loop */
2198
2199                 if (rc) {
2200                         pciehp_destroy_resource_list(&temp_resources);
2201
2202                         return_resource(&(resources->bus_head), hold_bus_node);
2203                         return_resource(&(resources->io_head), hold_IO_node);
2204                         return_resource(&(resources->mem_head), hold_mem_node);
2205                         return_resource(&(resources->p_mem_head), hold_p_mem_node);
2206                         return(rc);
2207                 }
2208
2209                 /* Save the interrupt routing information */
2210                 if (resources->irqs) {
2211                         resources->irqs->interrupt[0] = irqs.interrupt[0];
2212                         resources->irqs->interrupt[1] = irqs.interrupt[1];
2213                         resources->irqs->interrupt[2] = irqs.interrupt[2];
2214                         resources->irqs->interrupt[3] = irqs.interrupt[3];
2215                         resources->irqs->valid_INT = irqs.valid_INT;
2216                 } else if (!behind_bridge) {
2217                         /* We need to hook up the interrupts here */
2218                         for (cloop = 0; cloop < 4; cloop++) {
2219                                 if (irqs.valid_INT & (0x01 << cloop)) {
2220                                         rc = pciehp_set_irq(func->bus, func->device,
2221                                                            0x0A + cloop, irqs.interrupt[cloop]);
2222                                         if (rc) {
2223                                                 pciehp_destroy_resource_list (&temp_resources);
2224                                                 return_resource(&(resources->bus_head), hold_bus_node);
2225                                                 return_resource(&(resources->io_head), hold_IO_node);
2226                                                 return_resource(&(resources->mem_head), hold_mem_node);
2227                                                 return_resource(&(resources->p_mem_head), hold_p_mem_node);
2228                                                 return rc;
2229                                         }
2230                                 }
2231                         }       /* end of for loop */
2232                 }
2233
2234                 /* Return unused bus resources
2235                  * First use the temporary node to store information for the board
2236                  */
2237                 if (hold_bus_node && bus_node && temp_resources.bus_head) {
2238                         hold_bus_node->length = bus_node->base - hold_bus_node->base;
2239
2240                         hold_bus_node->next = func->bus_head;
2241                         func->bus_head = hold_bus_node;
2242
2243                         temp_byte = (u8)(temp_resources.bus_head->base - 1);
2244
2245                         /* Set subordinate bus */
2246                         dbg("re-set subordinate bus = 0x%x\n", temp_byte);
2247
2248                         rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
2249
2250                         if (temp_resources.bus_head->length == 0) {
2251                                 kfree(temp_resources.bus_head);
2252                                 temp_resources.bus_head = NULL;
2253                         } else {
2254                                 dbg("return bus res of b:d(0x%x:%x) base:len(0x%x:%x)\n",
2255                                         func->bus, func->device, temp_resources.bus_head->base, temp_resources.bus_head->length);
2256                                 return_resource(&(resources->bus_head), temp_resources.bus_head);
2257                         }
2258                 }
2259
2260                 /* If we have IO space available and there is some left,
2261                  * return the unused portion
2262                  */
2263                 if (hold_IO_node && temp_resources.io_head) {
2264                         io_node = do_pre_bridge_resource_split(&(temp_resources.io_head),
2265                                                                &hold_IO_node, 0x1000);
2266
2267                         /* Check if we were able to split something off */
2268                         if (io_node) {
2269                                 hold_IO_node->base = io_node->base + io_node->length;
2270
2271                                 RES_CHECK(hold_IO_node->base, 8);
2272                                 temp_byte = (u8)((hold_IO_node->base) >> 8);
2273                                 rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_BASE, temp_byte);
2274
2275                                 return_resource(&(resources->io_head), io_node);
2276                         }
2277
2278                         io_node = do_bridge_resource_split(&(temp_resources.io_head), 0x1000);
2279
2280                         /*  Check if we were able to split something off */
2281                         if (io_node) {
2282                                 /* First use the temporary node to store information for the board */
2283                                 hold_IO_node->length = io_node->base - hold_IO_node->base;
2284
2285                                 /* If we used any, add it to the board's list */
2286                                 if (hold_IO_node->length) {
2287                                         hold_IO_node->next = func->io_head;
2288                                         func->io_head = hold_IO_node;
2289
2290                                         RES_CHECK(io_node->base - 1, 8);
2291                                         temp_byte = (u8)((io_node->base - 1) >> 8);
2292                                         rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
2293
2294                                         return_resource(&(resources->io_head), io_node);
2295                                 } else {
2296                                         /* It doesn't need any IO */
2297                                         temp_byte = 0x00;
2298                                         rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
2299
2300                                         return_resource(&(resources->io_head), io_node);
2301                                         kfree(hold_IO_node);
2302                                 }
2303                         } else {
2304                                 /* It used most of the range */
2305                                 hold_IO_node->next = func->io_head;
2306                                 func->io_head = hold_IO_node;
2307                         }
2308                 } else if (hold_IO_node) {
2309                         /* It used the whole range */
2310                         hold_IO_node->next = func->io_head;
2311                         func->io_head = hold_IO_node;
2312                 }
2313
2314                 /* If we have memory space available and there is some left,
2315                  * return the unused portion
2316                  */
2317                 if (hold_mem_node && temp_resources.mem_head) {
2318                         mem_node = do_pre_bridge_resource_split(&(temp_resources.mem_head), &hold_mem_node, 0x100000L);
2319
2320                         /* Check if we were able to split something off */
2321                         if (mem_node) {
2322                                 hold_mem_node->base = mem_node->base + mem_node->length;
2323
2324                                 RES_CHECK(hold_mem_node->base, 16);
2325                                 temp_word = (u32)((hold_mem_node->base) >> 16);
2326                                 rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
2327
2328                                 return_resource(&(resources->mem_head), mem_node);
2329                         }
2330
2331                         mem_node = do_bridge_resource_split(&(temp_resources.mem_head), 0x100000L);
2332
2333                         /* Check if we were able to split something off */
2334                         if (mem_node) {
2335                                 /* First use the temporary node to store information for the board */
2336                                 hold_mem_node->length = mem_node->base - hold_mem_node->base;
2337
2338                                 if (hold_mem_node->length) {
2339                                         hold_mem_node->next = func->mem_head;
2340                                         func->mem_head = hold_mem_node;
2341
2342                                         /* Configure end address */
2343                                         RES_CHECK(mem_node->base - 1, 16);
2344                                         temp_word = (u32)((mem_node->base - 1) >> 16);
2345                                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
2346
2347                                         /* Return unused resources to the pool */
2348                                         return_resource(&(resources->mem_head), mem_node);
2349                                 } else {
2350                                         /* It doesn't need any Mem */
2351                                         temp_word = 0x0000;
2352                                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
2353
2354                                         return_resource(&(resources->mem_head), mem_node);
2355                                         kfree(hold_mem_node);
2356                                 }
2357                         } else {
2358                                 /* It used most of the range */
2359                                 hold_mem_node->next = func->mem_head;
2360                                 func->mem_head = hold_mem_node;
2361                         }
2362                 } else if (hold_mem_node) {
2363                         /* It used the whole range */
2364                         hold_mem_node->next = func->mem_head;
2365                         func->mem_head = hold_mem_node;
2366                 }
2367
2368                 /* If we have prefetchable memory space available and there is some
2369                  * left at the end, return the unused portion
2370                  */
2371                 if (hold_p_mem_node && temp_resources.p_mem_head) {
2372                         p_mem_node = do_pre_bridge_resource_split(&(temp_resources.p_mem_head),
2373                                                                   &hold_p_mem_node, 0x100000L);
2374
2375                         /* Check if we were able to split something off */
2376                         if (p_mem_node) {
2377                                 hold_p_mem_node->base = p_mem_node->base + p_mem_node->length;
2378
2379                                 RES_CHECK(hold_p_mem_node->base, 16);
2380                                 temp_word = (u32)((hold_p_mem_node->base) >> 16);
2381                                 rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
2382
2383                                 return_resource(&(resources->p_mem_head), p_mem_node);
2384                         }
2385
2386                         p_mem_node = do_bridge_resource_split(&(temp_resources.p_mem_head), 0x100000L);
2387
2388                         /* Check if we were able to split something off */
2389                         if (p_mem_node) {
2390                                 /* First use the temporary node to store information for the board */
2391                                 hold_p_mem_node->length = p_mem_node->base - hold_p_mem_node->base;
2392
2393                                 /* If we used any, add it to the board's list */
2394                                 if (hold_p_mem_node->length) {
2395                                         hold_p_mem_node->next = func->p_mem_head;
2396                                         func->p_mem_head = hold_p_mem_node;
2397
2398                                         RES_CHECK(p_mem_node->base - 1, 16);
2399                                         temp_word = (u32)((p_mem_node->base - 1) >> 16);
2400                                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
2401
2402                                         return_resource(&(resources->p_mem_head), p_mem_node);
2403                                 } else {
2404                                         /* It doesn't need any PMem */
2405                                         temp_word = 0x0000;
2406                                         rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
2407
2408                                         return_resource(&(resources->p_mem_head), p_mem_node);
2409                                         kfree(hold_p_mem_node);
2410                                 }
2411                         } else {
2412                                 /* It used the most of the range */
2413                                 hold_p_mem_node->next = func->p_mem_head;
2414                                 func->p_mem_head = hold_p_mem_node;
2415                         }
2416                 } else if (hold_p_mem_node) {
2417                         /* It used the whole range */
2418                         hold_p_mem_node->next = func->p_mem_head;
2419                         func->p_mem_head = hold_p_mem_node;
2420                 }
2421
2422                 /* We should be configuring an IRQ and the bridge's base address
2423                  * registers if it needs them.  Although we have never seen such
2424                  * a device
2425                  */
2426
2427                 pciehprm_enable_card(ctrl, func, PCI_HEADER_TYPE_BRIDGE);
2428
2429                 dbg("PCI Bridge Hot-Added s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus,
2430                         func->device, func->function);
2431         } else if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_NORMAL) {
2432                 /* Standard device */
2433                 u64     base64;
2434                 rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code);
2435
2436                 if (class_code == PCI_BASE_CLASS_DISPLAY)
2437                         return (DEVICE_TYPE_NOT_SUPPORTED);
2438
2439                 /* Figure out IO and memory needs */
2440                 for (cloop = PCI_BASE_ADDRESS_0; cloop <= PCI_BASE_ADDRESS_5; cloop += 4) {
2441                         temp_register = 0xFFFFFFFF;
2442
2443                         rc = pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register);
2444                         rc = pci_bus_read_config_dword(pci_bus, devfn, cloop, &temp_register);
2445                         dbg("Bar[%x]=0x%x on bus:dev:func(0x%x:%x:%x)\n", cloop, temp_register, func->bus, func->device, func->function);
2446
2447                         if (!temp_register)
2448                                 continue;
2449
2450                         base64 = 0L;
2451                         if (temp_register & PCI_BASE_ADDRESS_SPACE_IO) {
2452                                 /* Map IO */
2453
2454                                 /* Set base = amount of IO space */
2455                                 base = temp_register & 0xFFFFFFFC;
2456                                 base = ~base + 1;
2457
2458                                 dbg("NEED IO length(0x%x)\n", base);
2459                                 io_node = get_io_resource(&(resources->io_head),(ulong)base);
2460
2461                                 /* Allocate the resource to the board */
2462                                 if (io_node) {
2463                                         dbg("Got IO base=0x%x(length=0x%x)\n", io_node->base, io_node->length);
2464                                         base = (u32)io_node->base;
2465                                         io_node->next = func->io_head;
2466                                         func->io_head = io_node;
2467                                 } else {
2468                                         err("Got NO IO resource(length=0x%x)\n", base);
2469                                         return -ENOMEM;
2470                                 }
2471                         } else {        /* Map MEM */
2472                                 int prefetchable = 1;
2473                                 struct pci_resource **res_node = &func->p_mem_head;
2474                                 char *res_type_str = "PMEM";
2475                                 u32     temp_register2;
2476
2477                                 if (!(temp_register & PCI_BASE_ADDRESS_MEM_PREFETCH)) {
2478                                         prefetchable = 0;
2479                                         res_node = &func->mem_head;
2480                                         res_type_str++;
2481                                 }
2482
2483                                 base = temp_register & 0xFFFFFFF0;
2484                                 base = ~base + 1;
2485
2486                                 switch (temp_register & PCI_BASE_ADDRESS_MEM_TYPE_MASK) {
2487                                 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2488                                         dbg("NEED 32 %s bar=0x%x(length=0x%x)\n", res_type_str, temp_register, base);
2489
2490                                         if (prefetchable && resources->p_mem_head)
2491                                                 mem_node=get_resource(&(resources->p_mem_head), (ulong)base);
2492                                         else {
2493                                                 if (prefetchable)
2494                                                         dbg("using MEM for PMEM\n");
2495                                                 mem_node=get_resource(&(resources->mem_head), (ulong)base);
2496                                         }
2497
2498                                         /* Allocate the resource to the board */
2499                                         if (mem_node) {
2500                                                 base = (u32)mem_node->base;
2501                                                 mem_node->next = *res_node;
2502                                                 *res_node = mem_node;
2503                                                 dbg("Got 32 %s base=0x%x(length=0x%x)\n", res_type_str, mem_node->base, mem_node->length);
2504                                         } else {
2505                                                 err("Got NO 32 %s resource(length=0x%x)\n", res_type_str, base);
2506                                                 return -ENOMEM;
2507                                         }
2508                                         break;
2509                                 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2510                                         rc = pci_bus_read_config_dword(pci_bus, devfn, cloop+4, &temp_register2);
2511                                         dbg("NEED 64 %s bar=0x%x:%x(length=0x%x)\n", res_type_str, temp_register2, temp_register, base);
2512
2513                                         if (prefetchable && resources->p_mem_head)
2514                                                 mem_node = get_resource(&(resources->p_mem_head), (ulong)base);
2515                                         else {
2516                                                 if (prefetchable)
2517                                                         dbg("using MEM for PMEM\n");
2518                                                 mem_node = get_resource(&(resources->mem_head), (ulong)base);
2519                                         }
2520
2521                                         /* Allocate the resource to the board */
2522                                         if (mem_node) {
2523                                                 base64 = mem_node->base;
2524                                                 mem_node->next = *res_node;
2525                                                 *res_node = mem_node;
2526                                                 dbg("Got 64 %s base=0x%x:%x(length=%x)\n", res_type_str, (u32)(base64 >> 32), (u32)base64, mem_node->length);
2527                                         } else {
2528                                                 err("Got NO 64 %s resource(length=0x%x)\n", res_type_str, base);
2529                                                 return -ENOMEM;
2530                                         }
2531                                         break;
2532                                 default:
2533                                         dbg("reserved BAR type=0x%x\n", temp_register);
2534                                         break;
2535                                 }
2536
2537                         }
2538
2539                         if (base64) {
2540                                 rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, (u32)base64);
2541                                 cloop += 4;
2542                                 base64 >>= 32;
2543
2544                                 if (base64) {
2545                                         dbg("%s: high dword of base64(0x%x) set to 0\n", __FUNCTION__, (u32)base64);
2546                                         base64 = 0x0L;
2547                                 }
2548
2549                                 rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, (u32)base64);
2550                         } else {
2551                                 rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base);
2552                         }
2553                 }               /* End of base register loop */
2554
2555                 /* Disable ROM base Address */
2556                 temp_word = 0x00L;
2557                 rc = pci_bus_write_config_word (pci_bus, devfn, PCI_ROM_ADDRESS, temp_word);
2558
2559                 /* Set HP parameters (Cache Line Size, Latency Timer) */
2560                 rc = pciehprm_set_hpp(ctrl, func, PCI_HEADER_TYPE_NORMAL);
2561                 if (rc)
2562                         return rc;
2563
2564                 pciehprm_enable_card(ctrl, func, PCI_HEADER_TYPE_NORMAL);
2565
2566                 dbg("PCI function Hot-Added s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus, func->device, func->function);
2567         }                       /* End of Not-A-Bridge else */
2568         else {
2569                 /* It's some strange type of PCI adapter (Cardbus?) */
2570                 return(DEVICE_TYPE_NOT_SUPPORTED);
2571         }
2572
2573         func->configured = 1;
2574
2575         dbg("%s: exit\n", __FUNCTION__);
2576
2577         return 0;
2578 }
2579