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1da177e4 LT |
1 | /* |
2 | * Standard 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/workqueue.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 "shpchp.h" | |
42 | #include "shpchprm.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 shpchp_disk_irq; | |
56 | u8 shpchp_nic_irq; | |
57 | ||
58 | u8 shpchp_handle_attention_button(u8 hp_slot, void *inst_id) | |
59 | { | |
60 | struct controller *ctrl = (struct controller *) inst_id; | |
61 | struct slot *p_slot; | |
62 | u8 rc = 0; | |
63 | u8 getstatus; | |
64 | struct pci_func *func; | |
65 | struct event_info *taskInfo; | |
66 | ||
67 | /* Attention Button Change */ | |
68 | dbg("shpchp: Attention button interrupt received.\n"); | |
69 | ||
70 | func = shpchp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0); | |
71 | ||
72 | /* This is the structure that tells the worker thread what to do */ | |
73 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); | |
74 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); | |
75 | ||
76 | p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); | |
77 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
78 | ||
79 | ctrl->next_event = (ctrl->next_event + 1) % 10; | |
80 | taskInfo->hp_slot = hp_slot; | |
81 | ||
82 | rc++; | |
83 | ||
84 | /* | |
85 | * Button pressed - See if need to TAKE ACTION!!! | |
86 | */ | |
87 | info("Button pressed on Slot(%d)\n", ctrl->first_slot + hp_slot); | |
88 | taskInfo->event_type = INT_BUTTON_PRESS; | |
89 | ||
90 | if ((p_slot->state == BLINKINGON_STATE) | |
91 | || (p_slot->state == BLINKINGOFF_STATE)) { | |
92 | /* Cancel if we are still blinking; this means that we press the | |
93 | * attention again before the 5 sec. limit expires to cancel hot-add | |
94 | * or hot-remove | |
95 | */ | |
96 | taskInfo->event_type = INT_BUTTON_CANCEL; | |
97 | info("Button cancel on Slot(%d)\n", ctrl->first_slot + hp_slot); | |
98 | } else if ((p_slot->state == POWERON_STATE) | |
99 | || (p_slot->state == POWEROFF_STATE)) { | |
100 | /* Ignore if the slot is on power-on or power-off state; this | |
101 | * means that the previous attention button action to hot-add or | |
102 | * hot-remove is undergoing | |
103 | */ | |
104 | taskInfo->event_type = INT_BUTTON_IGNORE; | |
105 | info("Button ignore on Slot(%d)\n", ctrl->first_slot + hp_slot); | |
106 | } | |
107 | ||
108 | if (rc) | |
109 | up(&event_semaphore); /* signal event thread that new event is posted */ | |
110 | ||
111 | return 0; | |
112 | ||
113 | } | |
114 | ||
115 | u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id) | |
116 | { | |
117 | struct controller *ctrl = (struct controller *) inst_id; | |
118 | struct slot *p_slot; | |
119 | u8 rc = 0; | |
120 | u8 getstatus; | |
121 | struct pci_func *func; | |
122 | struct event_info *taskInfo; | |
123 | ||
124 | /* Switch Change */ | |
125 | dbg("shpchp: Switch interrupt received.\n"); | |
126 | ||
127 | func = shpchp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0); | |
128 | ||
129 | /* This is the structure that tells the worker thread | |
130 | * what to do | |
131 | */ | |
132 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); | |
133 | ctrl->next_event = (ctrl->next_event + 1) % 10; | |
134 | taskInfo->hp_slot = hp_slot; | |
135 | ||
136 | rc++; | |
137 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); | |
138 | p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); | |
139 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
140 | dbg("%s: Card present %x Power status %x\n", __FUNCTION__, | |
141 | func->presence_save, func->pwr_save); | |
142 | ||
143 | if (getstatus) { | |
144 | /* | |
145 | * Switch opened | |
146 | */ | |
147 | info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot); | |
148 | func->switch_save = 0; | |
149 | taskInfo->event_type = INT_SWITCH_OPEN; | |
150 | if (func->pwr_save && func->presence_save) { | |
151 | taskInfo->event_type = INT_POWER_FAULT; | |
152 | err("Surprise Removal of card\n"); | |
153 | } | |
154 | } else { | |
155 | /* | |
156 | * Switch closed | |
157 | */ | |
158 | info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot); | |
159 | func->switch_save = 0x10; | |
160 | taskInfo->event_type = INT_SWITCH_CLOSE; | |
161 | } | |
162 | ||
163 | if (rc) | |
164 | up(&event_semaphore); /* signal event thread that new event is posted */ | |
165 | ||
166 | return rc; | |
167 | } | |
168 | ||
169 | u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id) | |
170 | { | |
171 | struct controller *ctrl = (struct controller *) inst_id; | |
172 | struct slot *p_slot; | |
173 | u8 rc = 0; | |
174 | /*u8 temp_byte;*/ | |
175 | struct pci_func *func; | |
176 | struct event_info *taskInfo; | |
177 | ||
178 | /* Presence Change */ | |
179 | dbg("shpchp: Presence/Notify input change.\n"); | |
180 | ||
181 | func = shpchp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0); | |
182 | ||
183 | /* This is the structure that tells the worker thread | |
184 | * what to do | |
185 | */ | |
186 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); | |
187 | ctrl->next_event = (ctrl->next_event + 1) % 10; | |
188 | taskInfo->hp_slot = hp_slot; | |
189 | ||
190 | rc++; | |
191 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); | |
192 | ||
193 | /* | |
194 | * Save the presence state | |
195 | */ | |
196 | p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); | |
197 | if (func->presence_save) { | |
198 | /* | |
199 | * Card Present | |
200 | */ | |
201 | info("Card present on Slot(%d)\n", ctrl->first_slot + hp_slot); | |
202 | taskInfo->event_type = INT_PRESENCE_ON; | |
203 | } else { | |
204 | /* | |
205 | * Not Present | |
206 | */ | |
207 | info("Card not present on Slot(%d)\n", ctrl->first_slot + hp_slot); | |
208 | taskInfo->event_type = INT_PRESENCE_OFF; | |
209 | } | |
210 | ||
211 | if (rc) | |
212 | up(&event_semaphore); /* signal event thread that new event is posted */ | |
213 | ||
214 | return rc; | |
215 | } | |
216 | ||
217 | u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id) | |
218 | { | |
219 | struct controller *ctrl = (struct controller *) inst_id; | |
220 | struct slot *p_slot; | |
221 | u8 rc = 0; | |
222 | struct pci_func *func; | |
223 | struct event_info *taskInfo; | |
224 | ||
225 | /* Power fault */ | |
226 | dbg("shpchp: Power fault interrupt received.\n"); | |
227 | ||
228 | func = shpchp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0); | |
229 | ||
230 | /* This is the structure that tells the worker thread | |
231 | * what to do | |
232 | */ | |
233 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); | |
234 | ctrl->next_event = (ctrl->next_event + 1) % 10; | |
235 | taskInfo->hp_slot = hp_slot; | |
236 | ||
237 | rc++; | |
238 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); | |
239 | ||
240 | if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) { | |
241 | /* | |
242 | * Power fault Cleared | |
243 | */ | |
244 | info("Power fault cleared on Slot(%d)\n", ctrl->first_slot + hp_slot); | |
245 | func->status = 0x00; | |
246 | taskInfo->event_type = INT_POWER_FAULT_CLEAR; | |
247 | } else { | |
248 | /* | |
249 | * Power fault | |
250 | */ | |
251 | info("Power fault on Slot(%d)\n", ctrl->first_slot + hp_slot); | |
252 | taskInfo->event_type = INT_POWER_FAULT; | |
253 | /* set power fault status for this board */ | |
254 | func->status = 0xFF; | |
255 | info("power fault bit %x set\n", hp_slot); | |
256 | } | |
257 | if (rc) | |
258 | up(&event_semaphore); /* signal event thread that new event is posted */ | |
259 | ||
260 | return rc; | |
261 | } | |
262 | ||
263 | ||
264 | /* | |
265 | * sort_by_size | |
266 | * | |
267 | * Sorts nodes on the list by their length. | |
268 | * Smallest first. | |
269 | * | |
270 | */ | |
271 | static int sort_by_size(struct pci_resource **head) | |
272 | { | |
273 | struct pci_resource *current_res; | |
274 | struct pci_resource *next_res; | |
275 | int out_of_order = 1; | |
276 | ||
277 | if (!(*head)) | |
278 | return(1); | |
279 | ||
280 | if (!((*head)->next)) | |
281 | return(0); | |
282 | ||
283 | while (out_of_order) { | |
284 | out_of_order = 0; | |
285 | ||
286 | /* Special case for swapping list head */ | |
287 | if (((*head)->next) && | |
288 | ((*head)->length > (*head)->next->length)) { | |
289 | out_of_order++; | |
290 | current_res = *head; | |
291 | *head = (*head)->next; | |
292 | current_res->next = (*head)->next; | |
293 | (*head)->next = current_res; | |
294 | } | |
295 | ||
296 | current_res = *head; | |
297 | ||
298 | while (current_res->next && current_res->next->next) { | |
299 | if (current_res->next->length > current_res->next->next->length) { | |
300 | out_of_order++; | |
301 | next_res = current_res->next; | |
302 | current_res->next = current_res->next->next; | |
303 | current_res = current_res->next; | |
304 | next_res->next = current_res->next; | |
305 | current_res->next = next_res; | |
306 | } else | |
307 | current_res = current_res->next; | |
308 | } | |
309 | } /* End of out_of_order loop */ | |
310 | ||
311 | return(0); | |
312 | } | |
313 | ||
314 | ||
315 | /* | |
316 | * sort_by_max_size | |
317 | * | |
318 | * Sorts nodes on the list by their length. | |
319 | * Largest first. | |
320 | * | |
321 | */ | |
322 | static int sort_by_max_size(struct pci_resource **head) | |
323 | { | |
324 | struct pci_resource *current_res; | |
325 | struct pci_resource *next_res; | |
326 | int out_of_order = 1; | |
327 | ||
328 | if (!(*head)) | |
329 | return(1); | |
330 | ||
331 | if (!((*head)->next)) | |
332 | return(0); | |
333 | ||
334 | while (out_of_order) { | |
335 | out_of_order = 0; | |
336 | ||
337 | /* Special case for swapping list head */ | |
338 | if (((*head)->next) && | |
339 | ((*head)->length < (*head)->next->length)) { | |
340 | out_of_order++; | |
341 | current_res = *head; | |
342 | *head = (*head)->next; | |
343 | current_res->next = (*head)->next; | |
344 | (*head)->next = current_res; | |
345 | } | |
346 | ||
347 | current_res = *head; | |
348 | ||
349 | while (current_res->next && current_res->next->next) { | |
350 | if (current_res->next->length < current_res->next->next->length) { | |
351 | out_of_order++; | |
352 | next_res = current_res->next; | |
353 | current_res->next = current_res->next->next; | |
354 | current_res = current_res->next; | |
355 | next_res->next = current_res->next; | |
356 | current_res->next = next_res; | |
357 | } else | |
358 | current_res = current_res->next; | |
359 | } | |
360 | } /* End of out_of_order loop */ | |
361 | ||
362 | return(0); | |
363 | } | |
364 | ||
365 | ||
366 | /* | |
367 | * do_pre_bridge_resource_split | |
368 | * | |
369 | * Returns zero or one node of resources that aren't in use | |
370 | * | |
371 | */ | |
372 | static struct pci_resource *do_pre_bridge_resource_split (struct pci_resource **head, struct pci_resource **orig_head, u32 alignment) | |
373 | { | |
374 | struct pci_resource *prevnode = NULL; | |
375 | struct pci_resource *node; | |
376 | struct pci_resource *split_node; | |
377 | u32 rc; | |
378 | u32 temp_dword; | |
379 | dbg("do_pre_bridge_resource_split\n"); | |
380 | ||
381 | if (!(*head) || !(*orig_head)) | |
382 | return(NULL); | |
383 | ||
384 | rc = shpchp_resource_sort_and_combine(head); | |
385 | ||
386 | if (rc) | |
387 | return(NULL); | |
388 | ||
389 | if ((*head)->base != (*orig_head)->base) | |
390 | return(NULL); | |
391 | ||
392 | if ((*head)->length == (*orig_head)->length) | |
393 | return(NULL); | |
394 | ||
395 | ||
396 | /* If we got here, there the bridge requires some of the resource, but | |
397 | * we may be able to split some off of the front | |
398 | */ | |
399 | node = *head; | |
400 | ||
401 | if (node->length & (alignment -1)) { | |
402 | /* This one isn't an aligned length, so we'll make a new entry | |
403 | * and split it up. | |
404 | */ | |
405 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); | |
406 | ||
407 | if (!split_node) | |
408 | return(NULL); | |
409 | ||
410 | temp_dword = (node->length | (alignment-1)) + 1 - alignment; | |
411 | ||
412 | split_node->base = node->base; | |
413 | split_node->length = temp_dword; | |
414 | ||
415 | node->length -= temp_dword; | |
416 | node->base += split_node->length; | |
417 | ||
418 | /* Put it in the list */ | |
419 | *head = split_node; | |
420 | split_node->next = node; | |
421 | } | |
422 | ||
423 | if (node->length < alignment) { | |
424 | return(NULL); | |
425 | } | |
426 | ||
427 | /* Now unlink it */ | |
428 | if (*head == node) { | |
429 | *head = node->next; | |
430 | node->next = NULL; | |
431 | } else { | |
432 | prevnode = *head; | |
433 | while (prevnode->next != node) | |
434 | prevnode = prevnode->next; | |
435 | ||
436 | prevnode->next = node->next; | |
437 | node->next = NULL; | |
438 | } | |
439 | ||
440 | return(node); | |
441 | } | |
442 | ||
443 | ||
444 | /* | |
445 | * do_bridge_resource_split | |
446 | * | |
447 | * Returns zero or one node of resources that aren't in use | |
448 | * | |
449 | */ | |
450 | static struct pci_resource *do_bridge_resource_split (struct pci_resource **head, u32 alignment) | |
451 | { | |
452 | struct pci_resource *prevnode = NULL; | |
453 | struct pci_resource *node; | |
454 | u32 rc; | |
455 | u32 temp_dword; | |
456 | ||
457 | if (!(*head)) | |
458 | return(NULL); | |
459 | ||
460 | rc = shpchp_resource_sort_and_combine(head); | |
461 | ||
462 | if (rc) | |
463 | return(NULL); | |
464 | ||
465 | node = *head; | |
466 | ||
467 | while (node->next) { | |
468 | prevnode = node; | |
469 | node = node->next; | |
470 | kfree(prevnode); | |
471 | } | |
472 | ||
473 | if (node->length < alignment) { | |
474 | kfree(node); | |
475 | return(NULL); | |
476 | } | |
477 | ||
478 | if (node->base & (alignment - 1)) { | |
479 | /* Short circuit if adjusted size is too small */ | |
480 | temp_dword = (node->base | (alignment-1)) + 1; | |
481 | if ((node->length - (temp_dword - node->base)) < alignment) { | |
482 | kfree(node); | |
483 | return(NULL); | |
484 | } | |
485 | ||
486 | node->length -= (temp_dword - node->base); | |
487 | node->base = temp_dword; | |
488 | } | |
489 | ||
490 | if (node->length & (alignment - 1)) { | |
491 | /* There's stuff in use after this node */ | |
492 | kfree(node); | |
493 | return(NULL); | |
494 | } | |
495 | ||
496 | return(node); | |
497 | } | |
498 | ||
499 | ||
500 | /* | |
501 | * get_io_resource | |
502 | * | |
503 | * this function sorts the resource list by size and then | |
504 | * returns the first node of "size" length that is not in the | |
505 | * ISA aliasing window. If it finds a node larger than "size" | |
506 | * it will split it up. | |
507 | * | |
508 | * size must be a power of two. | |
509 | */ | |
510 | static struct pci_resource *get_io_resource (struct pci_resource **head, u32 size) | |
511 | { | |
512 | struct pci_resource *prevnode; | |
513 | struct pci_resource *node; | |
514 | struct pci_resource *split_node = NULL; | |
515 | u32 temp_dword; | |
516 | ||
517 | if (!(*head)) | |
518 | return(NULL); | |
519 | ||
520 | if ( shpchp_resource_sort_and_combine(head) ) | |
521 | return(NULL); | |
522 | ||
523 | if ( sort_by_size(head) ) | |
524 | return(NULL); | |
525 | ||
526 | for (node = *head; node; node = node->next) { | |
527 | if (node->length < size) | |
528 | continue; | |
529 | ||
530 | if (node->base & (size - 1)) { | |
531 | /* This one isn't base aligned properly | |
532 | so we'll make a new entry and split it up */ | |
533 | temp_dword = (node->base | (size-1)) + 1; | |
534 | ||
535 | /*/ Short circuit if adjusted size is too small */ | |
536 | if ((node->length - (temp_dword - node->base)) < size) | |
537 | continue; | |
538 | ||
539 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); | |
540 | ||
541 | if (!split_node) | |
542 | return(NULL); | |
543 | ||
544 | split_node->base = node->base; | |
545 | split_node->length = temp_dword - node->base; | |
546 | node->base = temp_dword; | |
547 | node->length -= split_node->length; | |
548 | ||
549 | /* Put it in the list */ | |
550 | split_node->next = node->next; | |
551 | node->next = split_node; | |
552 | } /* End of non-aligned base */ | |
553 | ||
554 | /* Don't need to check if too small since we already did */ | |
555 | if (node->length > size) { | |
556 | /* This one is longer than we need | |
557 | so we'll make a new entry and split it up */ | |
558 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); | |
559 | ||
560 | if (!split_node) | |
561 | return(NULL); | |
562 | ||
563 | split_node->base = node->base + size; | |
564 | split_node->length = node->length - size; | |
565 | node->length = size; | |
566 | ||
567 | /* Put it in the list */ | |
568 | split_node->next = node->next; | |
569 | node->next = split_node; | |
570 | } /* End of too big on top end */ | |
571 | ||
572 | /* For IO make sure it's not in the ISA aliasing space */ | |
573 | if (node->base & 0x300L) | |
574 | continue; | |
575 | ||
576 | /* If we got here, then it is the right size | |
577 | Now take it out of the list */ | |
578 | if (*head == node) { | |
579 | *head = node->next; | |
580 | } else { | |
581 | prevnode = *head; | |
582 | while (prevnode->next != node) | |
583 | prevnode = prevnode->next; | |
584 | ||
585 | prevnode->next = node->next; | |
586 | } | |
587 | node->next = NULL; | |
588 | /* Stop looping */ | |
589 | break; | |
590 | } | |
591 | ||
592 | return(node); | |
593 | } | |
594 | ||
595 | ||
596 | /* | |
597 | * get_max_resource | |
598 | * | |
599 | * Gets the largest node that is at least "size" big from the | |
600 | * list pointed to by head. It aligns the node on top and bottom | |
601 | * to "size" alignment before returning it. | |
602 | * J.I. modified to put max size limits of; 64M->32M->16M->8M->4M->1M | |
603 | * This is needed to avoid allocating entire ACPI _CRS res to one child bridge/slot. | |
604 | */ | |
605 | static struct pci_resource *get_max_resource (struct pci_resource **head, u32 size) | |
606 | { | |
607 | struct pci_resource *max; | |
608 | struct pci_resource *temp; | |
609 | struct pci_resource *split_node; | |
610 | u32 temp_dword; | |
611 | u32 max_size[] = { 0x4000000, 0x2000000, 0x1000000, 0x0800000, 0x0400000, 0x0200000, 0x0100000, 0x00 }; | |
612 | int i; | |
613 | ||
614 | if (!(*head)) | |
615 | return(NULL); | |
616 | ||
617 | if (shpchp_resource_sort_and_combine(head)) | |
618 | return(NULL); | |
619 | ||
620 | if (sort_by_max_size(head)) | |
621 | return(NULL); | |
622 | ||
623 | for (max = *head;max; max = max->next) { | |
624 | ||
625 | /* If not big enough we could probably just bail, | |
626 | instead we'll continue to the next. */ | |
627 | if (max->length < size) | |
628 | continue; | |
629 | ||
630 | if (max->base & (size - 1)) { | |
631 | /* This one isn't base aligned properly | |
632 | so we'll make a new entry and split it up */ | |
633 | temp_dword = (max->base | (size-1)) + 1; | |
634 | ||
635 | /* Short circuit if adjusted size is too small */ | |
636 | if ((max->length - (temp_dword - max->base)) < size) | |
637 | continue; | |
638 | ||
639 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); | |
640 | ||
641 | if (!split_node) | |
642 | return(NULL); | |
643 | ||
644 | split_node->base = max->base; | |
645 | split_node->length = temp_dword - max->base; | |
646 | max->base = temp_dword; | |
647 | max->length -= split_node->length; | |
648 | ||
649 | /* Put it next in the list */ | |
650 | split_node->next = max->next; | |
651 | max->next = split_node; | |
652 | } | |
653 | ||
654 | if ((max->base + max->length) & (size - 1)) { | |
655 | /* This one isn't end aligned properly at the top | |
656 | so we'll make a new entry and split it up */ | |
657 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); | |
658 | ||
659 | if (!split_node) | |
660 | return(NULL); | |
661 | temp_dword = ((max->base + max->length) & ~(size - 1)); | |
662 | split_node->base = temp_dword; | |
663 | split_node->length = max->length + max->base | |
664 | - split_node->base; | |
665 | max->length -= split_node->length; | |
666 | ||
667 | /* Put it in the list */ | |
668 | split_node->next = max->next; | |
669 | max->next = split_node; | |
670 | } | |
671 | ||
672 | /* Make sure it didn't shrink too much when we aligned it */ | |
673 | if (max->length < size) | |
674 | continue; | |
675 | ||
676 | for ( i = 0; max_size[i] > size; i++) { | |
677 | if (max->length > max_size[i]) { | |
678 | split_node = kmalloc(sizeof(*split_node), | |
679 | GFP_KERNEL); | |
680 | if (!split_node) | |
681 | break; /* return (NULL); */ | |
682 | split_node->base = max->base + max_size[i]; | |
683 | split_node->length = max->length - max_size[i]; | |
684 | max->length = max_size[i]; | |
685 | /* Put it next in the list */ | |
686 | split_node->next = max->next; | |
687 | max->next = split_node; | |
688 | break; | |
689 | } | |
690 | } | |
691 | ||
692 | /* Now take it out of the list */ | |
693 | temp = (struct pci_resource*) *head; | |
694 | if (temp == max) { | |
695 | *head = max->next; | |
696 | } else { | |
697 | while (temp && temp->next != max) { | |
698 | temp = temp->next; | |
699 | } | |
700 | ||
701 | temp->next = max->next; | |
702 | } | |
703 | ||
704 | max->next = NULL; | |
705 | return(max); | |
706 | } | |
707 | ||
708 | /* If we get here, we couldn't find one */ | |
709 | return(NULL); | |
710 | } | |
711 | ||
712 | ||
713 | /* | |
714 | * get_resource | |
715 | * | |
716 | * this function sorts the resource list by size and then | |
717 | * returns the first node of "size" length. If it finds a node | |
718 | * larger than "size" it will split it up. | |
719 | * | |
720 | * size must be a power of two. | |
721 | */ | |
722 | static struct pci_resource *get_resource (struct pci_resource **head, u32 size) | |
723 | { | |
724 | struct pci_resource *prevnode; | |
725 | struct pci_resource *node; | |
726 | struct pci_resource *split_node; | |
727 | u32 temp_dword; | |
728 | ||
729 | if (!(*head)) | |
730 | return(NULL); | |
731 | ||
732 | if ( shpchp_resource_sort_and_combine(head) ) | |
733 | return(NULL); | |
734 | ||
735 | if ( sort_by_size(head) ) | |
736 | return(NULL); | |
737 | ||
738 | for (node = *head; node; node = node->next) { | |
739 | dbg("%s: req_size =0x%x node=%p, base=0x%x, length=0x%x\n", | |
740 | __FUNCTION__, size, node, node->base, node->length); | |
741 | if (node->length < size) | |
742 | continue; | |
743 | ||
744 | if (node->base & (size - 1)) { | |
745 | dbg("%s: not aligned\n", __FUNCTION__); | |
746 | /* this one isn't base aligned properly | |
747 | so we'll make a new entry and split it up */ | |
748 | temp_dword = (node->base | (size-1)) + 1; | |
749 | ||
750 | /* Short circuit if adjusted size is too small */ | |
751 | if ((node->length - (temp_dword - node->base)) < size) | |
752 | continue; | |
753 | ||
754 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); | |
755 | ||
756 | if (!split_node) | |
757 | return(NULL); | |
758 | ||
759 | split_node->base = node->base; | |
760 | split_node->length = temp_dword - node->base; | |
761 | node->base = temp_dword; | |
762 | node->length -= split_node->length; | |
763 | ||
764 | /* Put it in the list */ | |
765 | split_node->next = node->next; | |
766 | node->next = split_node; | |
767 | } /* End of non-aligned base */ | |
768 | ||
769 | /* Don't need to check if too small since we already did */ | |
770 | if (node->length > size) { | |
771 | dbg("%s: too big\n", __FUNCTION__); | |
772 | /* this one is longer than we need | |
773 | so we'll make a new entry and split it up */ | |
774 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); | |
775 | ||
776 | if (!split_node) | |
777 | return(NULL); | |
778 | ||
779 | split_node->base = node->base + size; | |
780 | split_node->length = node->length - size; | |
781 | node->length = size; | |
782 | ||
783 | /* Put it in the list */ | |
784 | split_node->next = node->next; | |
785 | node->next = split_node; | |
786 | } /* End of too big on top end */ | |
787 | ||
788 | dbg("%s: got one!!!\n", __FUNCTION__); | |
789 | /* If we got here, then it is the right size | |
790 | Now take it out of the list */ | |
791 | if (*head == node) { | |
792 | *head = node->next; | |
793 | } else { | |
794 | prevnode = *head; | |
795 | while (prevnode->next != node) | |
796 | prevnode = prevnode->next; | |
797 | ||
798 | prevnode->next = node->next; | |
799 | } | |
800 | node->next = NULL; | |
801 | /* Stop looping */ | |
802 | break; | |
803 | } | |
804 | return(node); | |
805 | } | |
806 | ||
807 | ||
808 | /* | |
809 | * shpchp_resource_sort_and_combine | |
810 | * | |
811 | * Sorts all of the nodes in the list in ascending order by | |
812 | * their base addresses. Also does garbage collection by | |
813 | * combining adjacent nodes. | |
814 | * | |
815 | * returns 0 if success | |
816 | */ | |
817 | int shpchp_resource_sort_and_combine(struct pci_resource **head) | |
818 | { | |
819 | struct pci_resource *node1; | |
820 | struct pci_resource *node2; | |
821 | int out_of_order = 1; | |
822 | ||
823 | dbg("%s: head = %p, *head = %p\n", __FUNCTION__, head, *head); | |
824 | ||
825 | if (!(*head)) | |
826 | return(1); | |
827 | ||
828 | dbg("*head->next = %p\n",(*head)->next); | |
829 | ||
830 | if (!(*head)->next) | |
831 | return(0); /* only one item on the list, already sorted! */ | |
832 | ||
833 | dbg("*head->base = 0x%x\n",(*head)->base); | |
834 | dbg("*head->next->base = 0x%x\n",(*head)->next->base); | |
835 | while (out_of_order) { | |
836 | out_of_order = 0; | |
837 | ||
838 | /* Special case for swapping list head */ | |
839 | if (((*head)->next) && | |
840 | ((*head)->base > (*head)->next->base)) { | |
841 | node1 = *head; | |
842 | (*head) = (*head)->next; | |
843 | node1->next = (*head)->next; | |
844 | (*head)->next = node1; | |
845 | out_of_order++; | |
846 | } | |
847 | ||
848 | node1 = (*head); | |
849 | ||
850 | while (node1->next && node1->next->next) { | |
851 | if (node1->next->base > node1->next->next->base) { | |
852 | out_of_order++; | |
853 | node2 = node1->next; | |
854 | node1->next = node1->next->next; | |
855 | node1 = node1->next; | |
856 | node2->next = node1->next; | |
857 | node1->next = node2; | |
858 | } else | |
859 | node1 = node1->next; | |
860 | } | |
861 | } /* End of out_of_order loop */ | |
862 | ||
863 | node1 = *head; | |
864 | ||
865 | while (node1 && node1->next) { | |
866 | if ((node1->base + node1->length) == node1->next->base) { | |
867 | /* Combine */ | |
868 | dbg("8..\n"); | |
869 | node1->length += node1->next->length; | |
870 | node2 = node1->next; | |
871 | node1->next = node1->next->next; | |
872 | kfree(node2); | |
873 | } else | |
874 | node1 = node1->next; | |
875 | } | |
876 | ||
877 | return(0); | |
878 | } | |
879 | ||
880 | ||
881 | /** | |
882 | * shpchp_slot_create - Creates a node and adds it to the proper bus. | |
883 | * @busnumber - bus where new node is to be located | |
884 | * | |
885 | * Returns pointer to the new node or NULL if unsuccessful | |
886 | */ | |
887 | struct pci_func *shpchp_slot_create(u8 busnumber) | |
888 | { | |
889 | struct pci_func *new_slot; | |
890 | struct pci_func *next; | |
891 | ||
892 | new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL); | |
893 | ||
894 | if (new_slot == NULL) { | |
895 | return(new_slot); | |
896 | } | |
897 | ||
898 | memset(new_slot, 0, sizeof(struct pci_func)); | |
899 | ||
900 | new_slot->next = NULL; | |
901 | new_slot->configured = 1; | |
902 | ||
903 | if (shpchp_slot_list[busnumber] == NULL) { | |
904 | shpchp_slot_list[busnumber] = new_slot; | |
905 | } else { | |
906 | next = shpchp_slot_list[busnumber]; | |
907 | while (next->next != NULL) | |
908 | next = next->next; | |
909 | next->next = new_slot; | |
910 | } | |
911 | return(new_slot); | |
912 | } | |
913 | ||
914 | ||
915 | /* | |
916 | * slot_remove - Removes a node from the linked list of slots. | |
917 | * @old_slot: slot to remove | |
918 | * | |
919 | * Returns 0 if successful, !0 otherwise. | |
920 | */ | |
921 | static int slot_remove(struct pci_func * old_slot) | |
922 | { | |
923 | struct pci_func *next; | |
924 | ||
925 | if (old_slot == NULL) | |
926 | return(1); | |
927 | ||
928 | next = shpchp_slot_list[old_slot->bus]; | |
929 | ||
930 | if (next == NULL) { | |
931 | return(1); | |
932 | } | |
933 | ||
934 | if (next == old_slot) { | |
935 | shpchp_slot_list[old_slot->bus] = old_slot->next; | |
936 | shpchp_destroy_board_resources(old_slot); | |
937 | kfree(old_slot); | |
938 | return(0); | |
939 | } | |
940 | ||
941 | while ((next->next != old_slot) && (next->next != NULL)) { | |
942 | next = next->next; | |
943 | } | |
944 | ||
945 | if (next->next == old_slot) { | |
946 | next->next = old_slot->next; | |
947 | shpchp_destroy_board_resources(old_slot); | |
948 | kfree(old_slot); | |
949 | return(0); | |
950 | } else | |
951 | return(2); | |
952 | } | |
953 | ||
954 | ||
955 | /** | |
956 | * bridge_slot_remove - Removes a node from the linked list of slots. | |
957 | * @bridge: bridge to remove | |
958 | * | |
959 | * Returns 0 if successful, !0 otherwise. | |
960 | */ | |
961 | static int bridge_slot_remove(struct pci_func *bridge) | |
962 | { | |
963 | u8 subordinateBus, secondaryBus; | |
964 | u8 tempBus; | |
965 | struct pci_func *next; | |
966 | ||
967 | if (bridge == NULL) | |
968 | return(1); | |
969 | ||
970 | secondaryBus = (bridge->config_space[0x06] >> 8) & 0xFF; | |
971 | subordinateBus = (bridge->config_space[0x06] >> 16) & 0xFF; | |
972 | ||
973 | for (tempBus = secondaryBus; tempBus <= subordinateBus; tempBus++) { | |
974 | next = shpchp_slot_list[tempBus]; | |
975 | ||
976 | while (!slot_remove(next)) { | |
977 | next = shpchp_slot_list[tempBus]; | |
978 | } | |
979 | } | |
980 | ||
981 | next = shpchp_slot_list[bridge->bus]; | |
982 | ||
983 | if (next == NULL) { | |
984 | return(1); | |
985 | } | |
986 | ||
987 | if (next == bridge) { | |
988 | shpchp_slot_list[bridge->bus] = bridge->next; | |
989 | kfree(bridge); | |
990 | return(0); | |
991 | } | |
992 | ||
993 | while ((next->next != bridge) && (next->next != NULL)) { | |
994 | next = next->next; | |
995 | } | |
996 | ||
997 | if (next->next == bridge) { | |
998 | next->next = bridge->next; | |
999 | kfree(bridge); | |
1000 | return(0); | |
1001 | } else | |
1002 | return(2); | |
1003 | } | |
1004 | ||
1005 | ||
1006 | /** | |
1007 | * shpchp_slot_find - Looks for a node by bus, and device, multiple functions accessed | |
1008 | * @bus: bus to find | |
1009 | * @device: device to find | |
1010 | * @index: is 0 for first function found, 1 for the second... | |
1011 | * | |
1012 | * Returns pointer to the node if successful, %NULL otherwise. | |
1013 | */ | |
1014 | struct pci_func *shpchp_slot_find(u8 bus, u8 device, u8 index) | |
1015 | { | |
1016 | int found = -1; | |
1017 | struct pci_func *func; | |
1018 | ||
1019 | func = shpchp_slot_list[bus]; | |
1020 | ||
1021 | if ((func == NULL) || ((func->device == device) && (index == 0))) | |
1022 | return(func); | |
1023 | ||
1024 | if (func->device == device) | |
1025 | found++; | |
1026 | ||
1027 | while (func->next != NULL) { | |
1028 | func = func->next; | |
1029 | ||
1030 | if (func->device == device) | |
1031 | found++; | |
1032 | ||
1033 | if (found == index) | |
1034 | return(func); | |
1035 | } | |
1036 | ||
1037 | return(NULL); | |
1038 | } | |
1039 | ||
1040 | static int is_bridge(struct pci_func * func) | |
1041 | { | |
1042 | /* Check the header type */ | |
1043 | if (((func->config_space[0x03] >> 16) & 0xFF) == 0x01) | |
1044 | return 1; | |
1045 | else | |
1046 | return 0; | |
1047 | } | |
1048 | ||
1049 | ||
1050 | /* The following routines constitute the bulk of the | |
1051 | hotplug controller logic | |
1052 | */ | |
1053 | static u32 change_bus_speed(struct controller *ctrl, struct slot *p_slot, enum pci_bus_speed speed) | |
1054 | { | |
1055 | u32 rc = 0; | |
1056 | ||
1057 | dbg("%s: change to speed %d\n", __FUNCTION__, speed); | |
1058 | down(&ctrl->crit_sect); | |
1059 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) { | |
1060 | err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__); | |
1061 | up(&ctrl->crit_sect); | |
1062 | return WRONG_BUS_FREQUENCY; | |
1063 | } | |
1064 | wait_for_ctrl_irq (ctrl); | |
1065 | ||
1066 | if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { | |
1067 | err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n", | |
1068 | __FUNCTION__); | |
1069 | err("%s: Error code (%d)\n", __FUNCTION__, rc); | |
1070 | up(&ctrl->crit_sect); | |
1071 | return WRONG_BUS_FREQUENCY; | |
1072 | } | |
1073 | up(&ctrl->crit_sect); | |
1074 | return rc; | |
1075 | } | |
1076 | ||
1077 | static u32 fix_bus_speed(struct controller *ctrl, struct slot *pslot, u8 flag, | |
1078 | enum pci_bus_speed asp, enum pci_bus_speed bsp, enum pci_bus_speed msp) | |
1079 | { | |
1080 | u32 rc = 0; | |
1081 | ||
1082 | if (flag != 0) { /* Other slots on the same bus are occupied */ | |
1083 | if ( asp < bsp ) { | |
1084 | err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bsp, asp); | |
1085 | return WRONG_BUS_FREQUENCY; | |
1086 | } | |
1087 | } else { | |
1088 | /* Other slots on the same bus are empty */ | |
1089 | if (msp == bsp) { | |
1090 | /* if adapter_speed >= bus_speed, do nothing */ | |
1091 | if (asp < bsp) { | |
1092 | /* | |
1093 | * Try to lower bus speed to accommodate the adapter if other slots | |
1094 | * on the same controller are empty | |
1095 | */ | |
1096 | if ((rc = change_bus_speed(ctrl, pslot, asp))) | |
1097 | return rc; | |
1098 | } | |
1099 | } else { | |
1100 | if (asp < msp) { | |
1101 | if ((rc = change_bus_speed(ctrl, pslot, asp))) | |
1102 | return rc; | |
1103 | } else { | |
1104 | if ((rc = change_bus_speed(ctrl, pslot, msp))) | |
1105 | return rc; | |
1106 | } | |
1107 | } | |
1108 | } | |
1109 | return rc; | |
1110 | } | |
1111 | ||
1112 | /** | |
1113 | * board_added - Called after a board has been added to the system. | |
1114 | * | |
1115 | * Turns power on for the board | |
1116 | * Configures board | |
1117 | * | |
1118 | */ | |
1119 | static u32 board_added(struct pci_func * func, struct controller * ctrl) | |
1120 | { | |
1121 | u8 hp_slot; | |
1122 | u8 slots_not_empty = 0; | |
1123 | int index; | |
1124 | u32 temp_register = 0xFFFFFFFF; | |
1125 | u32 retval, rc = 0; | |
1126 | struct pci_func *new_func = NULL; | |
1127 | struct slot *p_slot; | |
1128 | struct resource_lists res_lists; | |
1129 | enum pci_bus_speed adapter_speed, bus_speed, max_bus_speed; | |
1130 | u8 pi, mode; | |
1131 | ||
1132 | p_slot = shpchp_find_slot(ctrl, func->device); | |
1133 | hp_slot = func->device - ctrl->slot_device_offset; | |
1134 | ||
1135 | dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n", __FUNCTION__, func->device, ctrl->slot_device_offset, hp_slot); | |
1136 | ||
1137 | /* Wait for exclusive access to hardware */ | |
1138 | down(&ctrl->crit_sect); | |
1139 | ||
1140 | /* Power on slot without connecting to bus */ | |
1141 | rc = p_slot->hpc_ops->power_on_slot(p_slot); | |
1142 | if (rc) { | |
1143 | err("%s: Failed to power on slot\n", __FUNCTION__); | |
1144 | /* Done with exclusive hardware access */ | |
1145 | up(&ctrl->crit_sect); | |
1146 | return -1; | |
1147 | } | |
1148 | ||
1149 | /* Wait for the command to complete */ | |
1150 | wait_for_ctrl_irq (ctrl); | |
1151 | ||
1152 | rc = p_slot->hpc_ops->check_cmd_status(ctrl); | |
1153 | if (rc) { | |
1154 | err("%s: Failed to power on slot, error code(%d)\n", __FUNCTION__, rc); | |
1155 | /* Done with exclusive hardware access */ | |
1156 | up(&ctrl->crit_sect); | |
1157 | return -1; | |
1158 | } | |
1159 | ||
1160 | ||
1161 | if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) { | |
1162 | if (slots_not_empty) | |
1163 | return WRONG_BUS_FREQUENCY; | |
1164 | ||
1165 | if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) { | |
1166 | err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__); | |
1167 | up(&ctrl->crit_sect); | |
1168 | return WRONG_BUS_FREQUENCY; | |
1169 | } | |
1170 | wait_for_ctrl_irq (ctrl); | |
1171 | ||
1172 | if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { | |
1173 | err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n", | |
1174 | __FUNCTION__); | |
1175 | err("%s: Error code (%d)\n", __FUNCTION__, rc); | |
1176 | up(&ctrl->crit_sect); | |
1177 | return WRONG_BUS_FREQUENCY; | |
1178 | } | |
1179 | /* turn on board, blink green LED, turn off Amber LED */ | |
1180 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { | |
1181 | err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); | |
1182 | up(&ctrl->crit_sect); | |
1183 | return rc; | |
1184 | } | |
1185 | wait_for_ctrl_irq (ctrl); | |
1186 | ||
1187 | if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { | |
1188 | err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc); | |
1189 | up(&ctrl->crit_sect); | |
1190 | return rc; | |
1191 | } | |
1192 | } | |
1193 | ||
1194 | rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &adapter_speed); | |
1195 | /* 0 = PCI 33Mhz, 1 = PCI 66 Mhz, 2 = PCI-X 66 PA, 4 = PCI-X 66 ECC, */ | |
1196 | /* 5 = PCI-X 133 PA, 7 = PCI-X 133 ECC, 0xa = PCI-X 133 Mhz 266, */ | |
1197 | /* 0xd = PCI-X 133 Mhz 533 */ | |
1198 | /* This encoding is different from the one used in cur_bus_speed & */ | |
1199 | /* max_bus_speed */ | |
1200 | ||
1201 | if (rc || adapter_speed == PCI_SPEED_UNKNOWN) { | |
1202 | err("%s: Can't get adapter speed or bus mode mismatch\n", __FUNCTION__); | |
1203 | /* Done with exclusive hardware access */ | |
1204 | up(&ctrl->crit_sect); | |
1205 | return WRONG_BUS_FREQUENCY; | |
1206 | } | |
1207 | ||
1208 | rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bus_speed); | |
1209 | if (rc || bus_speed == PCI_SPEED_UNKNOWN) { | |
1210 | err("%s: Can't get bus operation speed\n", __FUNCTION__); | |
1211 | /* Done with exclusive hardware access */ | |
1212 | up(&ctrl->crit_sect); | |
1213 | return WRONG_BUS_FREQUENCY; | |
1214 | } | |
1215 | ||
1216 | rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &max_bus_speed); | |
1217 | if (rc || max_bus_speed == PCI_SPEED_UNKNOWN) { | |
1218 | err("%s: Can't get max bus operation speed\n", __FUNCTION__); | |
1219 | max_bus_speed = bus_speed; | |
1220 | } | |
1221 | ||
1222 | /* Done with exclusive hardware access */ | |
1223 | up(&ctrl->crit_sect); | |
1224 | ||
1225 | if ((rc = p_slot->hpc_ops->get_prog_int(p_slot, &pi))) { | |
1226 | err("%s: Can't get controller programming interface, set it to 1\n", __FUNCTION__); | |
1227 | pi = 1; | |
1228 | } | |
1229 | ||
1230 | /* Check if there are other slots or devices on the same bus */ | |
1231 | if (!list_empty(&ctrl->pci_dev->subordinate->devices)) | |
1232 | slots_not_empty = 1; | |
1233 | ||
1234 | dbg("%s: slots_not_empty %d, pi %d\n", __FUNCTION__, | |
1235 | slots_not_empty, pi); | |
1236 | dbg("adapter_speed %d, bus_speed %d, max_bus_speed %d\n", | |
1237 | adapter_speed, bus_speed, max_bus_speed); | |
1238 | ||
1239 | if (pi == 2) { | |
1240 | dbg("%s: In PI = %d\n", __FUNCTION__, pi); | |
1241 | if ((rc = p_slot->hpc_ops->get_mode1_ECC_cap(p_slot, &mode))) { | |
1242 | err("%s: Can't get Mode1_ECC, set mode to 0\n", __FUNCTION__); | |
1243 | mode = 0; | |
1244 | } | |
1245 | ||
1246 | switch (adapter_speed) { | |
1247 | case PCI_SPEED_133MHz_PCIX_533: | |
1248 | case PCI_SPEED_133MHz_PCIX_266: | |
1249 | if ((bus_speed != adapter_speed) && | |
1250 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) | |
1251 | return rc; | |
1252 | break; | |
1253 | case PCI_SPEED_133MHz_PCIX_ECC: | |
1254 | case PCI_SPEED_133MHz_PCIX: | |
1255 | if (mode) { /* Bus - Mode 1 ECC */ | |
1256 | if ((bus_speed != 0x7) && | |
1257 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) | |
1258 | return rc; | |
1259 | } else { | |
1260 | if ((bus_speed != 0x4) && | |
1261 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) | |
1262 | return rc; | |
1263 | } | |
1264 | break; | |
1265 | case PCI_SPEED_66MHz_PCIX_ECC: | |
1266 | case PCI_SPEED_66MHz_PCIX: | |
1267 | if (mode) { /* Bus - Mode 1 ECC */ | |
1268 | if ((bus_speed != 0x5) && | |
1269 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) | |
1270 | return rc; | |
1271 | } else { | |
1272 | if ((bus_speed != 0x2) && | |
1273 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) | |
1274 | return rc; | |
1275 | } | |
1276 | break; | |
1277 | case PCI_SPEED_66MHz: | |
1278 | if ((bus_speed != 0x1) && | |
1279 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) | |
1280 | return rc; | |
1281 | break; | |
1282 | case PCI_SPEED_33MHz: | |
1283 | if (bus_speed > 0x0) { | |
1284 | if (slots_not_empty == 0) { | |
1285 | if ((rc = change_bus_speed(ctrl, p_slot, adapter_speed))) | |
1286 | return rc; | |
1287 | } else { | |
1288 | err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed); | |
1289 | return WRONG_BUS_FREQUENCY; | |
1290 | } | |
1291 | } | |
1292 | break; | |
1293 | default: | |
1294 | err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed); | |
1295 | return WRONG_BUS_FREQUENCY; | |
1296 | } | |
1297 | } else { | |
1298 | /* If adpater_speed == bus_speed, nothing to do here */ | |
1299 | dbg("%s: In PI = %d\n", __FUNCTION__, pi); | |
1300 | if ((adapter_speed != bus_speed) && | |
1301 | ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) | |
1302 | return rc; | |
1303 | } | |
1304 | ||
1305 | down(&ctrl->crit_sect); | |
1306 | /* turn on board, blink green LED, turn off Amber LED */ | |
1307 | if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { | |
1308 | err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); | |
1309 | up(&ctrl->crit_sect); | |
1310 | return rc; | |
1311 | } | |
1312 | wait_for_ctrl_irq (ctrl); | |
1313 | ||
1314 | if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { | |
1315 | err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc); | |
1316 | up(&ctrl->crit_sect); | |
1317 | return rc; | |
1318 | } | |
1319 | ||
1320 | up(&ctrl->crit_sect); | |
1321 | ||
1322 | /* Wait for ~1 second */ | |
1323 | dbg("%s: before long_delay\n", __FUNCTION__); | |
1324 | wait_for_ctrl_irq (ctrl); | |
1325 | dbg("%s: after long_delay\n", __FUNCTION__); | |
1326 | ||
1327 | dbg("%s: func status = %x\n", __FUNCTION__, func->status); | |
1328 | /* Check for a power fault */ | |
1329 | if (func->status == 0xFF) { | |
1330 | /* power fault occurred, but it was benign */ | |
1331 | temp_register = 0xFFFFFFFF; | |
1332 | dbg("%s: temp register set to %x by power fault\n", __FUNCTION__, temp_register); | |
1333 | rc = POWER_FAILURE; | |
1334 | func->status = 0; | |
1335 | } else { | |
1336 | /* Get vendor/device ID u32 */ | |
1337 | rc = pci_bus_read_config_dword (ctrl->pci_dev->subordinate, PCI_DEVFN(func->device, func->function), | |
1338 | PCI_VENDOR_ID, &temp_register); | |
1339 | dbg("%s: pci_bus_read_config_dword returns %d\n", __FUNCTION__, rc); | |
1340 | dbg("%s: temp_register is %x\n", __FUNCTION__, temp_register); | |
1341 | ||
1342 | if (rc != 0) { | |
1343 | /* Something's wrong here */ | |
1344 | temp_register = 0xFFFFFFFF; | |
1345 | dbg("%s: temp register set to %x by error\n", __FUNCTION__, temp_register); | |
1346 | } | |
1347 | /* Preset return code. It will be changed later if things go okay. */ | |
1348 | rc = NO_ADAPTER_PRESENT; | |
1349 | } | |
1350 | ||
1351 | /* All F's is an empty slot or an invalid board */ | |
1352 | if (temp_register != 0xFFFFFFFF) { /* Check for a board in the slot */ | |
1353 | res_lists.io_head = ctrl->io_head; | |
1354 | res_lists.mem_head = ctrl->mem_head; | |
1355 | res_lists.p_mem_head = ctrl->p_mem_head; | |
1356 | res_lists.bus_head = ctrl->bus_head; | |
1357 | res_lists.irqs = NULL; | |
1358 | ||
1359 | rc = configure_new_device(ctrl, func, 0, &res_lists, 0, 0); | |
1360 | dbg("%s: back from configure_new_device\n", __FUNCTION__); | |
1361 | ||
1362 | ctrl->io_head = res_lists.io_head; | |
1363 | ctrl->mem_head = res_lists.mem_head; | |
1364 | ctrl->p_mem_head = res_lists.p_mem_head; | |
1365 | ctrl->bus_head = res_lists.bus_head; | |
1366 | ||
1367 | shpchp_resource_sort_and_combine(&(ctrl->mem_head)); | |
1368 | shpchp_resource_sort_and_combine(&(ctrl->p_mem_head)); | |
1369 | shpchp_resource_sort_and_combine(&(ctrl->io_head)); | |
1370 | shpchp_resource_sort_and_combine(&(ctrl->bus_head)); | |
1371 | ||
1372 | if (rc) { | |
1373 | /* Wait for exclusive access to hardware */ | |
1374 | down(&ctrl->crit_sect); | |
1375 | ||
1376 | /* turn off slot, turn on Amber LED, turn off Green LED */ | |
1377 | retval = p_slot->hpc_ops->slot_disable(p_slot); | |
1378 | if (retval) { | |
1379 | err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); | |
1380 | /* Done with exclusive hardware access */ | |
1381 | up(&ctrl->crit_sect); | |
1382 | return retval; | |
1383 | } | |
1384 | /* Wait for the command to complete */ | |
1385 | wait_for_ctrl_irq (ctrl); | |
1386 | ||
1387 | retval = p_slot->hpc_ops->check_cmd_status(ctrl); | |
1388 | if (retval) { | |
1389 | err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, retval); | |
1390 | /* Done with exclusive hardware access */ | |
1391 | up(&ctrl->crit_sect); | |
1392 | return retval; | |
1393 | } | |
1394 | ||
1395 | /* Done with exclusive hardware access */ | |
1396 | up(&ctrl->crit_sect); | |
1397 | ||
1398 | return(rc); | |
1399 | } | |
1400 | shpchp_save_slot_config(ctrl, func); | |
1401 | ||
1402 | func->status = 0; | |
1403 | func->switch_save = 0x10; | |
1404 | func->is_a_board = 0x01; | |
1405 | func->pwr_save = 1; | |
1406 | ||
1407 | /* Next, we will instantiate the linux pci_dev structures | |
1408 | * (with appropriate driver notification, if already present) | |
1409 | */ | |
1410 | index = 0; | |
1411 | do { | |
1412 | new_func = shpchp_slot_find(ctrl->slot_bus, func->device, index++); | |
1413 | if (new_func && !new_func->pci_dev) { | |
1414 | dbg("%s:call pci_hp_configure_dev\n", __FUNCTION__); | |
1415 | shpchp_configure_device(ctrl, new_func); | |
1416 | } | |
1417 | } while (new_func); | |
1418 | ||
1419 | /* Wait for exclusive access to hardware */ | |
1420 | down(&ctrl->crit_sect); | |
1421 | ||
1422 | p_slot->hpc_ops->green_led_on(p_slot); | |
1423 | ||
1424 | /* Wait for the command to complete */ | |
1425 | wait_for_ctrl_irq (ctrl); | |
1426 | ||
1427 | ||
1428 | /* Done with exclusive hardware access */ | |
1429 | up(&ctrl->crit_sect); | |
1430 | ||
1431 | } else { | |
1432 | /* Wait for exclusive access to hardware */ | |
1433 | down(&ctrl->crit_sect); | |
1434 | ||
1435 | /* turn off slot, turn on Amber LED, turn off Green LED */ | |
1436 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
1437 | if (rc) { | |
1438 | err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); | |
1439 | /* Done with exclusive hardware access */ | |
1440 | up(&ctrl->crit_sect); | |
1441 | return rc; | |
1442 | } | |
1443 | /* Wait for the command to complete */ | |
1444 | wait_for_ctrl_irq (ctrl); | |
1445 | ||
1446 | rc = p_slot->hpc_ops->check_cmd_status(ctrl); | |
1447 | if (rc) { | |
1448 | err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc); | |
1449 | /* Done with exclusive hardware access */ | |
1450 | up(&ctrl->crit_sect); | |
1451 | return rc; | |
1452 | } | |
1453 | ||
1454 | /* Done with exclusive hardware access */ | |
1455 | up(&ctrl->crit_sect); | |
1456 | ||
1457 | return(rc); | |
1458 | } | |
1459 | return 0; | |
1460 | } | |
1461 | ||
1462 | ||
1463 | /** | |
1464 | * remove_board - Turns off slot and LED's | |
1465 | * | |
1466 | */ | |
1467 | static u32 remove_board(struct pci_func *func, struct controller *ctrl) | |
1468 | { | |
1469 | int index; | |
1470 | u8 skip = 0; | |
1471 | u8 device; | |
1472 | u8 hp_slot; | |
1473 | u32 rc; | |
1474 | struct resource_lists res_lists; | |
1475 | struct pci_func *temp_func; | |
1476 | struct slot *p_slot; | |
1477 | ||
1478 | if (func == NULL) | |
1479 | return(1); | |
1480 | ||
1481 | if (shpchp_unconfigure_device(func)) | |
1482 | return(1); | |
1483 | ||
1484 | device = func->device; | |
1485 | ||
1486 | hp_slot = func->device - ctrl->slot_device_offset; | |
1487 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); | |
1488 | ||
1489 | dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot); | |
1490 | ||
1491 | if ((ctrl->add_support) && | |
1492 | !(func->bus_head || func->mem_head || func->p_mem_head || func->io_head)) { | |
1493 | /* Here we check to see if we've saved any of the board's | |
1494 | * resources already. If so, we'll skip the attempt to | |
1495 | * determine what's being used. | |
1496 | */ | |
1497 | index = 0; | |
1498 | ||
1499 | temp_func = func; | |
1500 | ||
1501 | while ((temp_func = shpchp_slot_find(temp_func->bus, temp_func->device, index++))) { | |
1502 | if (temp_func->bus_head || temp_func->mem_head | |
1503 | || temp_func->p_mem_head || temp_func->io_head) { | |
1504 | skip = 1; | |
1505 | break; | |
1506 | } | |
1507 | } | |
1508 | ||
1509 | if (!skip) | |
1510 | rc = shpchp_save_used_resources(ctrl, func, DISABLE_CARD); | |
1511 | } | |
1512 | /* Change status to shutdown */ | |
1513 | if (func->is_a_board) | |
1514 | func->status = 0x01; | |
1515 | func->configured = 0; | |
1516 | ||
1517 | /* Wait for exclusive access to hardware */ | |
1518 | down(&ctrl->crit_sect); | |
1519 | ||
1520 | /* turn off slot, turn on Amber LED, turn off Green LED */ | |
1521 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
1522 | if (rc) { | |
1523 | err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); | |
1524 | /* Done with exclusive hardware access */ | |
1525 | up(&ctrl->crit_sect); | |
1526 | return rc; | |
1527 | } | |
1528 | /* Wait for the command to complete */ | |
1529 | wait_for_ctrl_irq (ctrl); | |
1530 | ||
1531 | rc = p_slot->hpc_ops->check_cmd_status(ctrl); | |
1532 | if (rc) { | |
1533 | err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc); | |
1534 | /* Done with exclusive hardware access */ | |
1535 | up(&ctrl->crit_sect); | |
1536 | return rc; | |
1537 | } | |
1538 | ||
1539 | rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
1540 | if (rc) { | |
1541 | err("%s: Issue of Set Attention command failed\n", __FUNCTION__); | |
1542 | /* Done with exclusive hardware access */ | |
1543 | up(&ctrl->crit_sect); | |
1544 | return rc; | |
1545 | } | |
1546 | /* Wait for the command to complete */ | |
1547 | wait_for_ctrl_irq (ctrl); | |
1548 | ||
1549 | /* Done with exclusive hardware access */ | |
1550 | up(&ctrl->crit_sect); | |
1551 | ||
1552 | if (ctrl->add_support) { | |
1553 | while (func) { | |
1554 | res_lists.io_head = ctrl->io_head; | |
1555 | res_lists.mem_head = ctrl->mem_head; | |
1556 | res_lists.p_mem_head = ctrl->p_mem_head; | |
1557 | res_lists.bus_head = ctrl->bus_head; | |
1558 | ||
1559 | dbg("Returning resources to ctlr lists for (B/D/F) = (%#x/%#x/%#x)\n", func->bus, | |
1560 | func->device, func->function); | |
1561 | ||
1562 | shpchp_return_board_resources(func, &res_lists); | |
1563 | ||
1564 | ctrl->io_head = res_lists.io_head; | |
1565 | ctrl->mem_head = res_lists.mem_head; | |
1566 | ctrl->p_mem_head = res_lists.p_mem_head; | |
1567 | ctrl->bus_head = res_lists.bus_head; | |
1568 | ||
1569 | shpchp_resource_sort_and_combine(&(ctrl->mem_head)); | |
1570 | shpchp_resource_sort_and_combine(&(ctrl->p_mem_head)); | |
1571 | shpchp_resource_sort_and_combine(&(ctrl->io_head)); | |
1572 | shpchp_resource_sort_and_combine(&(ctrl->bus_head)); | |
1573 | ||
1574 | if (is_bridge(func)) { | |
1575 | dbg("PCI Bridge Hot-Remove s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus, | |
1576 | func->device, func->function); | |
1577 | bridge_slot_remove(func); | |
1578 | } else | |
1579 | dbg("PCI Function Hot-Remove s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus, | |
1580 | func->device, func->function); | |
1581 | slot_remove(func); | |
1582 | ||
1583 | func = shpchp_slot_find(ctrl->slot_bus, device, 0); | |
1584 | } | |
1585 | ||
1586 | /* Setup slot structure with entry for empty slot */ | |
1587 | func = shpchp_slot_create(ctrl->slot_bus); | |
1588 | ||
1589 | if (func == NULL) { | |
1590 | return(1); | |
1591 | } | |
1592 | ||
1593 | func->bus = ctrl->slot_bus; | |
1594 | func->device = device; | |
1595 | func->function = 0; | |
1596 | func->configured = 0; | |
1597 | func->switch_save = 0x10; | |
1598 | func->pwr_save = 0; | |
1599 | func->is_a_board = 0; | |
1600 | } | |
1601 | ||
1602 | return 0; | |
1603 | } | |
1604 | ||
1605 | ||
1606 | static void pushbutton_helper_thread (unsigned long data) | |
1607 | { | |
1608 | pushbutton_pending = data; | |
1609 | ||
1610 | up(&event_semaphore); | |
1611 | } | |
1612 | ||
1613 | ||
1614 | /** | |
1615 | * shpchp_pushbutton_thread | |
1616 | * | |
1617 | * Scheduled procedure to handle blocking stuff for the pushbuttons | |
1618 | * Handles all pending events and exits. | |
1619 | * | |
1620 | */ | |
1621 | static void shpchp_pushbutton_thread (unsigned long slot) | |
1622 | { | |
1623 | struct slot *p_slot = (struct slot *) slot; | |
1624 | u8 getstatus; | |
1625 | ||
1626 | pushbutton_pending = 0; | |
1627 | ||
1628 | if (!p_slot) { | |
1629 | dbg("%s: Error! slot NULL\n", __FUNCTION__); | |
1630 | return; | |
1631 | } | |
1632 | ||
1633 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
1634 | if (getstatus) { | |
1635 | p_slot->state = POWEROFF_STATE; | |
1636 | dbg("In power_down_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device); | |
1637 | ||
1638 | shpchp_disable_slot(p_slot); | |
1639 | p_slot->state = STATIC_STATE; | |
1640 | } else { | |
1641 | p_slot->state = POWERON_STATE; | |
1642 | dbg("In add_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device); | |
1643 | ||
1644 | if (shpchp_enable_slot(p_slot)) { | |
1645 | /* Wait for exclusive access to hardware */ | |
1646 | down(&p_slot->ctrl->crit_sect); | |
1647 | ||
1648 | p_slot->hpc_ops->green_led_off(p_slot); | |
1649 | ||
1650 | /* Wait for the command to complete */ | |
1651 | wait_for_ctrl_irq (p_slot->ctrl); | |
1652 | ||
1653 | /* Done with exclusive hardware access */ | |
1654 | up(&p_slot->ctrl->crit_sect); | |
1655 | } | |
1656 | p_slot->state = STATIC_STATE; | |
1657 | } | |
1658 | ||
1659 | return; | |
1660 | } | |
1661 | ||
1662 | ||
1663 | /* this is the main worker thread */ | |
1664 | static int event_thread(void* data) | |
1665 | { | |
1666 | struct controller *ctrl; | |
1667 | lock_kernel(); | |
1668 | daemonize("shpchpd_event"); | |
1669 | unlock_kernel(); | |
1670 | ||
1671 | while (1) { | |
1672 | dbg("!!!!event_thread sleeping\n"); | |
1673 | down_interruptible (&event_semaphore); | |
1674 | dbg("event_thread woken finished = %d\n", event_finished); | |
1675 | if (event_finished || signal_pending(current)) | |
1676 | break; | |
1677 | /* Do stuff here */ | |
1678 | if (pushbutton_pending) | |
1679 | shpchp_pushbutton_thread(pushbutton_pending); | |
1680 | else | |
1681 | for (ctrl = shpchp_ctrl_list; ctrl; ctrl=ctrl->next) | |
1682 | interrupt_event_handler(ctrl); | |
1683 | } | |
1684 | dbg("event_thread signals exit\n"); | |
1685 | up(&event_exit); | |
1686 | return 0; | |
1687 | } | |
1688 | ||
1689 | int shpchp_event_start_thread (void) | |
1690 | { | |
1691 | int pid; | |
1692 | ||
1693 | /* initialize our semaphores */ | |
1694 | init_MUTEX_LOCKED(&event_exit); | |
1695 | event_finished=0; | |
1696 | ||
1697 | init_MUTEX_LOCKED(&event_semaphore); | |
1698 | pid = kernel_thread(event_thread, NULL, 0); | |
1699 | ||
1700 | if (pid < 0) { | |
1701 | err ("Can't start up our event thread\n"); | |
1702 | return -1; | |
1703 | } | |
1704 | dbg("Our event thread pid = %d\n", pid); | |
1705 | return 0; | |
1706 | } | |
1707 | ||
1708 | ||
1709 | void shpchp_event_stop_thread (void) | |
1710 | { | |
1711 | event_finished = 1; | |
1712 | dbg("event_thread finish command given\n"); | |
1713 | up(&event_semaphore); | |
1714 | dbg("wait for event_thread to exit\n"); | |
1715 | down(&event_exit); | |
1716 | } | |
1717 | ||
1718 | ||
1719 | static int update_slot_info (struct slot *slot) | |
1720 | { | |
1721 | struct hotplug_slot_info *info; | |
1722 | int result; | |
1723 | ||
1724 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1725 | if (!info) | |
1726 | return -ENOMEM; | |
1727 | ||
1728 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); | |
1729 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); | |
1730 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); | |
1731 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); | |
1732 | ||
1733 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); | |
1734 | kfree (info); | |
1735 | return result; | |
1736 | } | |
1737 | ||
1738 | static void interrupt_event_handler(struct controller *ctrl) | |
1739 | { | |
1740 | int loop = 0; | |
1741 | int change = 1; | |
1742 | struct pci_func *func; | |
1743 | u8 hp_slot; | |
1744 | u8 getstatus; | |
1745 | struct slot *p_slot; | |
1746 | ||
1747 | dbg("%s:\n", __FUNCTION__); | |
1748 | while (change) { | |
1749 | change = 0; | |
1750 | ||
1751 | for (loop = 0; loop < 10; loop++) { | |
1752 | if (ctrl->event_queue[loop].event_type != 0) { | |
1753 | dbg("%s:loop %x event_type %x\n", __FUNCTION__, loop, | |
1754 | ctrl->event_queue[loop].event_type); | |
1755 | hp_slot = ctrl->event_queue[loop].hp_slot; | |
1756 | ||
1757 | func = shpchp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0); | |
1758 | ||
1759 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); | |
1760 | ||
1761 | dbg("%s: hp_slot %d, func %p, p_slot %p\n", __FUNCTION__, hp_slot, func, p_slot); | |
1762 | ||
1763 | if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) { | |
1764 | dbg("%s: button cancel\n", __FUNCTION__); | |
1765 | del_timer(&p_slot->task_event); | |
1766 | ||
1767 | switch (p_slot->state) { | |
1768 | case BLINKINGOFF_STATE: | |
1769 | /* Wait for exclusive access to hardware */ | |
1770 | down(&ctrl->crit_sect); | |
1771 | ||
1772 | p_slot->hpc_ops->green_led_on(p_slot); | |
1773 | /* Wait for the command to complete */ | |
1774 | wait_for_ctrl_irq (ctrl); | |
1775 | ||
1776 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
1777 | ||
1778 | /* Wait for the command to complete */ | |
1779 | wait_for_ctrl_irq (ctrl); | |
1780 | ||
1781 | /* Done with exclusive hardware access */ | |
1782 | up(&ctrl->crit_sect); | |
1783 | break; | |
1784 | case BLINKINGON_STATE: | |
1785 | /* Wait for exclusive access to hardware */ | |
1786 | down(&ctrl->crit_sect); | |
1787 | ||
1788 | p_slot->hpc_ops->green_led_off(p_slot); | |
1789 | /* Wait for the command to complete */ | |
1790 | wait_for_ctrl_irq (ctrl); | |
1791 | ||
1792 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
1793 | /* Wait for the command to complete */ | |
1794 | wait_for_ctrl_irq (ctrl); | |
1795 | ||
1796 | /* Done with exclusive hardware access */ | |
1797 | up(&ctrl->crit_sect); | |
1798 | ||
1799 | break; | |
1800 | default: | |
1801 | warn("Not a valid state\n"); | |
1802 | return; | |
1803 | } | |
1804 | info(msg_button_cancel, p_slot->number); | |
1805 | p_slot->state = STATIC_STATE; | |
1806 | } else if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) { | |
1807 | /* Button Pressed (No action on 1st press...) */ | |
1808 | dbg("%s: Button pressed\n", __FUNCTION__); | |
1809 | ||
1810 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
1811 | if (getstatus) { | |
1812 | /* slot is on */ | |
1813 | dbg("%s: slot is on\n", __FUNCTION__); | |
1814 | p_slot->state = BLINKINGOFF_STATE; | |
1815 | info(msg_button_off, p_slot->number); | |
1816 | } else { | |
1817 | /* slot is off */ | |
1818 | dbg("%s: slot is off\n", __FUNCTION__); | |
1819 | p_slot->state = BLINKINGON_STATE; | |
1820 | info(msg_button_on, p_slot->number); | |
1821 | } | |
1822 | ||
1823 | /* Wait for exclusive access to hardware */ | |
1824 | down(&ctrl->crit_sect); | |
1825 | ||
1826 | /* blink green LED and turn off amber */ | |
1827 | p_slot->hpc_ops->green_led_blink(p_slot); | |
1828 | /* Wait for the command to complete */ | |
1829 | wait_for_ctrl_irq (ctrl); | |
1830 | ||
1831 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
1832 | ||
1833 | /* Wait for the command to complete */ | |
1834 | wait_for_ctrl_irq (ctrl); | |
1835 | ||
1836 | /* Done with exclusive hardware access */ | |
1837 | up(&ctrl->crit_sect); | |
1838 | ||
1839 | init_timer(&p_slot->task_event); | |
1840 | p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */ | |
1841 | p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread; | |
1842 | p_slot->task_event.data = (unsigned long) p_slot; | |
1843 | ||
1844 | dbg("%s: add_timer p_slot = %p\n", __FUNCTION__,(void *) p_slot); | |
1845 | add_timer(&p_slot->task_event); | |
1846 | } else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) { | |
1847 | /***********POWER FAULT********************/ | |
1848 | dbg("%s: power fault\n", __FUNCTION__); | |
1849 | /* Wait for exclusive access to hardware */ | |
1850 | down(&ctrl->crit_sect); | |
1851 | ||
1852 | p_slot->hpc_ops->set_attention_status(p_slot, 1); | |
1853 | /* Wait for the command to complete */ | |
1854 | wait_for_ctrl_irq (ctrl); | |
1855 | ||
1856 | p_slot->hpc_ops->green_led_off(p_slot); | |
1857 | /* Wait for the command to complete */ | |
1858 | wait_for_ctrl_irq (ctrl); | |
1859 | ||
1860 | /* Done with exclusive hardware access */ | |
1861 | up(&ctrl->crit_sect); | |
1862 | } else { | |
1863 | /* refresh notification */ | |
1864 | if (p_slot) | |
1865 | update_slot_info(p_slot); | |
1866 | } | |
1867 | ||
1868 | ctrl->event_queue[loop].event_type = 0; | |
1869 | ||
1870 | change = 1; | |
1871 | } | |
1872 | } /* End of FOR loop */ | |
1873 | } | |
1874 | ||
1875 | return; | |
1876 | } | |
1877 | ||
1878 | ||
1879 | int shpchp_enable_slot (struct slot *p_slot) | |
1880 | { | |
1881 | u8 getstatus = 0; | |
1882 | int rc; | |
1883 | struct pci_func *func; | |
1884 | ||
1885 | func = shpchp_slot_find(p_slot->bus, p_slot->device, 0); | |
1886 | if (!func) { | |
1887 | dbg("%s: Error! slot NULL\n", __FUNCTION__); | |
1888 | return 1; | |
1889 | } | |
1890 | ||
1891 | /* Check to see if (latch closed, card present, power off) */ | |
1892 | down(&p_slot->ctrl->crit_sect); | |
1893 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); | |
1894 | if (rc || !getstatus) { | |
1895 | info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number); | |
1896 | up(&p_slot->ctrl->crit_sect); | |
1897 | return 1; | |
1898 | } | |
1899 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
1900 | if (rc || getstatus) { | |
1901 | info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number); | |
1902 | up(&p_slot->ctrl->crit_sect); | |
1903 | return 1; | |
1904 | } | |
1905 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
1906 | if (rc || getstatus) { | |
1907 | info("%s: already enabled on slot(%x)\n", __FUNCTION__, p_slot->number); | |
1908 | up(&p_slot->ctrl->crit_sect); | |
1909 | return 1; | |
1910 | } | |
1911 | up(&p_slot->ctrl->crit_sect); | |
1912 | ||
1913 | slot_remove(func); | |
1914 | ||
1915 | func = shpchp_slot_create(p_slot->bus); | |
1916 | if (func == NULL) | |
1917 | return 1; | |
1918 | ||
1919 | func->bus = p_slot->bus; | |
1920 | func->device = p_slot->device; | |
1921 | func->function = 0; | |
1922 | func->configured = 0; | |
1923 | func->is_a_board = 1; | |
1924 | ||
1925 | /* We have to save the presence info for these slots */ | |
1926 | p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); | |
1927 | p_slot->hpc_ops->get_power_status(p_slot, &(func->pwr_save)); | |
1928 | dbg("%s: func->pwr_save %x\n", __FUNCTION__, func->pwr_save); | |
1929 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
1930 | func->switch_save = !getstatus? 0x10:0; | |
1931 | ||
1932 | rc = board_added(func, p_slot->ctrl); | |
1933 | if (rc) { | |
1934 | if (is_bridge(func)) | |
1935 | bridge_slot_remove(func); | |
1936 | else | |
1937 | slot_remove(func); | |
1938 | ||
1939 | /* Setup slot structure with entry for empty slot */ | |
1940 | func = shpchp_slot_create(p_slot->bus); | |
1941 | if (func == NULL) | |
1942 | return (1); /* Out of memory */ | |
1943 | ||
1944 | func->bus = p_slot->bus; | |
1945 | func->device = p_slot->device; | |
1946 | func->function = 0; | |
1947 | func->configured = 0; | |
1948 | func->is_a_board = 1; | |
1949 | ||
1950 | /* We have to save the presence info for these slots */ | |
1951 | p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); | |
1952 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
1953 | func->switch_save = !getstatus? 0x10:0; | |
1954 | } | |
1955 | ||
1956 | if (p_slot) | |
1957 | update_slot_info(p_slot); | |
1958 | ||
1959 | return rc; | |
1960 | } | |
1961 | ||
1962 | ||
1963 | int shpchp_disable_slot (struct slot *p_slot) | |
1964 | { | |
1965 | u8 class_code, header_type, BCR; | |
1966 | u8 index = 0; | |
1967 | u8 getstatus = 0; | |
1968 | u32 rc = 0; | |
1969 | int ret = 0; | |
1970 | unsigned int devfn; | |
1971 | struct pci_bus *pci_bus; | |
1972 | struct pci_func *func; | |
1973 | ||
1974 | if (!p_slot->ctrl) | |
1975 | return 1; | |
1976 | ||
1977 | pci_bus = p_slot->ctrl->pci_dev->subordinate; | |
1978 | ||
1979 | /* Check to see if (latch closed, card present, power on) */ | |
1980 | down(&p_slot->ctrl->crit_sect); | |
1981 | ||
1982 | ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); | |
1983 | if (ret || !getstatus) { | |
1984 | info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number); | |
1985 | up(&p_slot->ctrl->crit_sect); | |
1986 | return 1; | |
1987 | } | |
1988 | ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
1989 | if (ret || getstatus) { | |
1990 | info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number); | |
1991 | up(&p_slot->ctrl->crit_sect); | |
1992 | return 1; | |
1993 | } | |
1994 | ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
1995 | if (ret || !getstatus) { | |
1996 | info("%s: already disabled slot(%x)\n", __FUNCTION__, p_slot->number); | |
1997 | up(&p_slot->ctrl->crit_sect); | |
1998 | return 1; | |
1999 | } | |
2000 | up(&p_slot->ctrl->crit_sect); | |
2001 | ||
2002 | func = shpchp_slot_find(p_slot->bus, p_slot->device, index++); | |
2003 | ||
2004 | /* Make sure there are no video controllers here | |
2005 | * for all func of p_slot | |
2006 | */ | |
2007 | while (func && !rc) { | |
2008 | pci_bus->number = func->bus; | |
2009 | devfn = PCI_DEVFN(func->device, func->function); | |
2010 | ||
2011 | /* Check the Class Code */ | |
2012 | rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code); | |
2013 | if (rc) | |
2014 | return rc; | |
2015 | ||
2016 | if (class_code == PCI_BASE_CLASS_DISPLAY) { | |
2017 | /* Display/Video adapter (not supported) */ | |
2018 | rc = REMOVE_NOT_SUPPORTED; | |
2019 | } else { | |
2020 | /* See if it's a bridge */ | |
2021 | rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type); | |
2022 | if (rc) | |
2023 | return rc; | |
2024 | ||
2025 | /* If it's a bridge, check the VGA Enable bit */ | |
2026 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { | |
2027 | rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_BRIDGE_CONTROL, &BCR); | |
2028 | if (rc) | |
2029 | return rc; | |
2030 | ||
2031 | /* If the VGA Enable bit is set, remove isn't supported */ | |
2032 | if (BCR & PCI_BRIDGE_CTL_VGA) { | |
2033 | rc = REMOVE_NOT_SUPPORTED; | |
2034 | } | |
2035 | } | |
2036 | } | |
2037 | ||
2038 | func = shpchp_slot_find(p_slot->bus, p_slot->device, index++); | |
2039 | } | |
2040 | ||
2041 | func = shpchp_slot_find(p_slot->bus, p_slot->device, 0); | |
2042 | if ((func != NULL) && !rc) { | |
2043 | rc = remove_board(func, p_slot->ctrl); | |
2044 | } else if (!rc) | |
2045 | rc = 1; | |
2046 | ||
2047 | if (p_slot) | |
2048 | update_slot_info(p_slot); | |
2049 | ||
2050 | return(rc); | |
2051 | } | |
2052 | ||
2053 | ||
2054 | /** | |
2055 | * configure_new_device - Configures the PCI header information of one board. | |
2056 | * | |
2057 | * @ctrl: pointer to controller structure | |
2058 | * @func: pointer to function structure | |
2059 | * @behind_bridge: 1 if this is a recursive call, 0 if not | |
2060 | * @resources: pointer to set of resource lists | |
2061 | * | |
2062 | * Returns 0 if success | |
2063 | * | |
2064 | */ | |
2065 | static u32 configure_new_device (struct controller * ctrl, struct pci_func * func, | |
2066 | u8 behind_bridge, struct resource_lists * resources, u8 bridge_bus, u8 bridge_dev) | |
2067 | { | |
2068 | u8 temp_byte, function, max_functions, stop_it; | |
2069 | int rc; | |
2070 | u32 ID; | |
2071 | struct pci_func *new_slot; | |
2072 | struct pci_bus lpci_bus, *pci_bus; | |
2073 | int index; | |
2074 | ||
2075 | new_slot = func; | |
2076 | ||
2077 | dbg("%s\n", __FUNCTION__); | |
2078 | memcpy(&lpci_bus, ctrl->pci_dev->subordinate, sizeof(lpci_bus)); | |
2079 | pci_bus = &lpci_bus; | |
2080 | pci_bus->number = func->bus; | |
2081 | ||
2082 | /* Check for Multi-function device */ | |
2083 | rc = pci_bus_read_config_byte(pci_bus, PCI_DEVFN(func->device, func->function), 0x0E, &temp_byte); | |
2084 | if (rc) { | |
2085 | dbg("%s: rc = %d\n", __FUNCTION__, rc); | |
2086 | return rc; | |
2087 | } | |
2088 | ||
2089 | if (temp_byte & 0x80) /* Multi-function device */ | |
2090 | max_functions = 8; | |
2091 | else | |
2092 | max_functions = 1; | |
2093 | ||
2094 | function = 0; | |
2095 | ||
2096 | do { | |
2097 | rc = configure_new_function(ctrl, new_slot, behind_bridge, resources, bridge_bus, bridge_dev); | |
2098 | ||
2099 | if (rc) { | |
2100 | dbg("configure_new_function failed %d\n",rc); | |
2101 | index = 0; | |
2102 | ||
2103 | while (new_slot) { | |
2104 | new_slot = shpchp_slot_find(new_slot->bus, new_slot->device, index++); | |
2105 | ||
2106 | if (new_slot) | |
2107 | shpchp_return_board_resources(new_slot, resources); | |
2108 | } | |
2109 | ||
2110 | return(rc); | |
2111 | } | |
2112 | ||
2113 | function++; | |
2114 | ||
2115 | stop_it = 0; | |
2116 | ||
2117 | /* The following loop skips to the next present function | |
2118 | * and creates a board structure | |
2119 | */ | |
2120 | ||
2121 | while ((function < max_functions) && (!stop_it)) { | |
2122 | pci_bus_read_config_dword(pci_bus, PCI_DEVFN(func->device, function), 0x00, &ID); | |
2123 | ||
2124 | if (ID == 0xFFFFFFFF) { /* There's nothing there. */ | |
2125 | function++; | |
2126 | } else { /* There's something there */ | |
2127 | /* Setup slot structure. */ | |
2128 | new_slot = shpchp_slot_create(func->bus); | |
2129 | ||
2130 | if (new_slot == NULL) { | |
2131 | /* Out of memory */ | |
2132 | return(1); | |
2133 | } | |
2134 | ||
2135 | new_slot->bus = func->bus; | |
2136 | new_slot->device = func->device; | |
2137 | new_slot->function = function; | |
2138 | new_slot->is_a_board = 1; | |
2139 | new_slot->status = 0; | |
2140 | ||
2141 | stop_it++; | |
2142 | } | |
2143 | } | |
2144 | ||
2145 | } while (function < max_functions); | |
2146 | dbg("returning from configure_new_device\n"); | |
2147 | ||
2148 | return 0; | |
2149 | } | |
2150 | ||
2151 | ||
2152 | /* | |
2153 | * Configuration logic that involves the hotplug data structures and | |
2154 | * their bookkeeping | |
2155 | */ | |
2156 | ||
2157 | ||
2158 | /** | |
2159 | * configure_new_function - Configures the PCI header information of one device | |
2160 | * | |
2161 | * @ctrl: pointer to controller structure | |
2162 | * @func: pointer to function structure | |
2163 | * @behind_bridge: 1 if this is a recursive call, 0 if not | |
2164 | * @resources: pointer to set of resource lists | |
2165 | * | |
2166 | * Calls itself recursively for bridged devices. | |
2167 | * Returns 0 if success | |
2168 | * | |
2169 | */ | |
2170 | static int configure_new_function (struct controller * ctrl, struct pci_func * func, | |
2171 | u8 behind_bridge, struct resource_lists *resources, u8 bridge_bus, u8 bridge_dev) | |
2172 | { | |
2173 | int cloop; | |
2174 | u8 temp_byte; | |
2175 | u8 device; | |
2176 | u8 class_code; | |
2177 | u16 temp_word; | |
2178 | u32 rc; | |
2179 | u32 temp_register; | |
2180 | u32 base; | |
2181 | u32 ID; | |
2182 | unsigned int devfn; | |
2183 | struct pci_resource *mem_node; | |
2184 | struct pci_resource *p_mem_node; | |
2185 | struct pci_resource *io_node; | |
2186 | struct pci_resource *bus_node; | |
2187 | struct pci_resource *hold_mem_node; | |
2188 | struct pci_resource *hold_p_mem_node; | |
2189 | struct pci_resource *hold_IO_node; | |
2190 | struct pci_resource *hold_bus_node; | |
2191 | struct irq_mapping irqs; | |
2192 | struct pci_func *new_slot; | |
2193 | struct pci_bus lpci_bus, *pci_bus; | |
2194 | struct resource_lists temp_resources; | |
2195 | #if defined(CONFIG_X86_64) | |
2196 | u8 IRQ=0; | |
2197 | #endif | |
2198 | ||
2199 | memcpy(&lpci_bus, ctrl->pci_dev->subordinate, sizeof(lpci_bus)); | |
2200 | pci_bus = &lpci_bus; | |
2201 | pci_bus->number = func->bus; | |
2202 | devfn = PCI_DEVFN(func->device, func->function); | |
2203 | ||
2204 | /* Check for Bridge */ | |
2205 | rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &temp_byte); | |
2206 | if (rc) | |
2207 | return rc; | |
2208 | ||
2209 | if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { /* PCI-PCI Bridge */ | |
2210 | /* set Primary bus */ | |
2211 | dbg("set Primary bus = 0x%x\n", func->bus); | |
2212 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_PRIMARY_BUS, func->bus); | |
2213 | if (rc) | |
2214 | return rc; | |
2215 | ||
2216 | /* find range of busses to use */ | |
2217 | bus_node = get_max_resource(&resources->bus_head, 1L); | |
2218 | ||
2219 | /* If we don't have any busses to allocate, we can't continue */ | |
2220 | if (!bus_node) { | |
2221 | err("Got NO bus resource to use\n"); | |
2222 | return -ENOMEM; | |
2223 | } | |
2224 | dbg("Got ranges of buses to use: base:len=0x%x:%x\n", bus_node->base, bus_node->length); | |
2225 | ||
2226 | /* set Secondary bus */ | |
2227 | temp_byte = (u8)bus_node->base; | |
2228 | dbg("set Secondary bus = 0x%x\n", temp_byte); | |
2229 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, temp_byte); | |
2230 | if (rc) | |
2231 | return rc; | |
2232 | ||
2233 | /* set subordinate bus */ | |
2234 | temp_byte = (u8)(bus_node->base + bus_node->length - 1); | |
2235 | dbg("set subordinate bus = 0x%x\n", temp_byte); | |
2236 | rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte); | |
2237 | if (rc) | |
2238 | return rc; | |
2239 | ||
2240 | /* Set HP parameters (Cache Line Size, Latency Timer) */ | |
2241 | rc = shpchprm_set_hpp(ctrl, func, PCI_HEADER_TYPE_BRIDGE); | |
2242 | if (rc) | |
2243 | return rc; | |
2244 | ||
2245 | /* Setup the IO, memory, and prefetchable windows */ | |
2246 | ||
2247 | io_node = get_max_resource(&(resources->io_head), 0x1000L); | |
2248 | if (io_node) { | |
2249 | dbg("io_node(base, len, next) (%x, %x, %p)\n", io_node->base, io_node->length, io_node->next); | |
2250 | } | |
2251 | ||
2252 | mem_node = get_max_resource(&(resources->mem_head), 0x100000L); | |
2253 | if (mem_node) { | |
2254 | dbg("mem_node(base, len, next) (%x, %x, %p)\n", mem_node->base, mem_node->length, mem_node->next); | |
2255 | } | |
2256 | ||
2257 | if (resources->p_mem_head) | |
2258 | p_mem_node = get_max_resource(&(resources->p_mem_head), 0x100000L); | |
2259 | else { | |
2260 | /* | |
2261 | * In some platform implementation, MEM and PMEM are not | |
2262 | * distinguished, and hence ACPI _CRS has only MEM entries | |
2263 | * for both MEM and PMEM. | |
2264 | */ | |
2265 | dbg("using MEM for PMEM\n"); | |
2266 | p_mem_node = get_max_resource(&(resources->mem_head), 0x100000L); | |
2267 | } | |
2268 | if (p_mem_node) { | |
2269 | dbg("p_mem_node(base, len, next) (%x, %x, %p)\n", p_mem_node->base, p_mem_node->length, p_mem_node->next); | |
2270 | } | |
2271 | ||
2272 | /* set up the IRQ info */ | |
2273 | if (!resources->irqs) { | |
2274 | irqs.barber_pole = 0; | |
2275 | irqs.interrupt[0] = 0; | |
2276 | irqs.interrupt[1] = 0; | |
2277 | irqs.interrupt[2] = 0; | |
2278 | irqs.interrupt[3] = 0; | |
2279 | irqs.valid_INT = 0; | |
2280 | } else { | |
2281 | irqs.barber_pole = resources->irqs->barber_pole; | |
2282 | irqs.interrupt[0] = resources->irqs->interrupt[0]; | |
2283 | irqs.interrupt[1] = resources->irqs->interrupt[1]; | |
2284 | irqs.interrupt[2] = resources->irqs->interrupt[2]; | |
2285 | irqs.interrupt[3] = resources->irqs->interrupt[3]; | |
2286 | irqs.valid_INT = resources->irqs->valid_INT; | |
2287 | } | |
2288 | ||
2289 | /* set up resource lists that are now aligned on top and bottom | |
2290 | * for anything behind the bridge. | |
2291 | */ | |
2292 | temp_resources.bus_head = bus_node; | |
2293 | temp_resources.io_head = io_node; | |
2294 | temp_resources.mem_head = mem_node; | |
2295 | temp_resources.p_mem_head = p_mem_node; | |
2296 | temp_resources.irqs = &irqs; | |
2297 | ||
2298 | /* Make copies of the nodes we are going to pass down so that | |
2299 | * if there is a problem,we can just use these to free resources | |
2300 | */ | |
2301 | hold_bus_node = kmalloc(sizeof(*hold_bus_node), GFP_KERNEL); | |
2302 | hold_IO_node = kmalloc(sizeof(*hold_IO_node), GFP_KERNEL); | |
2303 | hold_mem_node = kmalloc(sizeof(*hold_mem_node), GFP_KERNEL); | |
2304 | hold_p_mem_node = kmalloc(sizeof(*hold_p_mem_node), GFP_KERNEL); | |
2305 | ||
2306 | if (!hold_bus_node || !hold_IO_node || !hold_mem_node || !hold_p_mem_node) { | |
2307 | kfree(hold_bus_node); | |
2308 | kfree(hold_IO_node); | |
2309 | kfree(hold_mem_node); | |
2310 | kfree(hold_p_mem_node); | |
2311 | ||
2312 | return 1; | |
2313 | } | |
2314 | ||
2315 | memcpy(hold_bus_node, bus_node, sizeof(struct pci_resource)); | |
2316 | ||
2317 | bus_node->base += 1; | |
2318 | bus_node->length -= 1; | |
2319 | bus_node->next = NULL; | |
2320 | ||
2321 | /* If we have IO resources copy them and fill in the bridge's | |
2322 | * IO range registers | |
2323 | */ | |
2324 | if (io_node) { | |
2325 | memcpy(hold_IO_node, io_node, sizeof(struct pci_resource)); | |
2326 | io_node->next = NULL; | |
2327 | ||
2328 | /* set IO base and Limit registers */ | |
2329 | RES_CHECK(io_node->base, 8); | |
2330 | temp_byte = (u8)(io_node->base >> 8); | |
2331 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_BASE, temp_byte); | |
2332 | ||
2333 | RES_CHECK(io_node->base + io_node->length - 1, 8); | |
2334 | temp_byte = (u8)((io_node->base + io_node->length - 1) >> 8); | |
2335 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte); | |
2336 | } else { | |
2337 | kfree(hold_IO_node); | |
2338 | hold_IO_node = NULL; | |
2339 | } | |
2340 | ||
2341 | /* If we have memory resources copy them and fill in the bridge's | |
2342 | * memory range registers. Otherwise, fill in the range | |
2343 | * registers with values that disable them. | |
2344 | */ | |
2345 | if (mem_node) { | |
2346 | memcpy(hold_mem_node, mem_node, sizeof(struct pci_resource)); | |
2347 | mem_node->next = NULL; | |
2348 | ||
2349 | /* set Mem base and Limit registers */ | |
2350 | RES_CHECK(mem_node->base, 16); | |
2351 | temp_word = (u32)(mem_node->base >> 16); | |
2352 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word); | |
2353 | ||
2354 | RES_CHECK(mem_node->base + mem_node->length - 1, 16); | |
2355 | temp_word = (u32)((mem_node->base + mem_node->length - 1) >> 16); | |
2356 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); | |
2357 | } else { | |
2358 | temp_word = 0xFFFF; | |
2359 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word); | |
2360 | ||
2361 | temp_word = 0x0000; | |
2362 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); | |
2363 | ||
2364 | kfree(hold_mem_node); | |
2365 | hold_mem_node = NULL; | |
2366 | } | |
2367 | ||
2368 | /* If we have prefetchable memory resources copy them and | |
2369 | * fill in the bridge's memory range registers. Otherwise, | |
2370 | * fill in the range registers with values that disable them. | |
2371 | */ | |
2372 | if (p_mem_node) { | |
2373 | memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource)); | |
2374 | p_mem_node->next = NULL; | |
2375 | ||
2376 | /* set Pre Mem base and Limit registers */ | |
2377 | RES_CHECK(p_mem_node->base, 16); | |
2378 | temp_word = (u32)(p_mem_node->base >> 16); | |
2379 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word); | |
2380 | ||
2381 | RES_CHECK(p_mem_node->base + p_mem_node->length - 1, 16); | |
2382 | temp_word = (u32)((p_mem_node->base + p_mem_node->length - 1) >> 16); | |
2383 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); | |
2384 | } else { | |
2385 | temp_word = 0xFFFF; | |
2386 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word); | |
2387 | ||
2388 | temp_word = 0x0000; | |
2389 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); | |
2390 | ||
2391 | kfree(hold_p_mem_node); | |
2392 | hold_p_mem_node = NULL; | |
2393 | } | |
2394 | ||
2395 | /* Adjust this to compensate for extra adjustment in first loop */ | |
2396 | irqs.barber_pole--; | |
2397 | ||
2398 | rc = 0; | |
2399 | ||
2400 | /* Here we actually find the devices and configure them */ | |
2401 | for (device = 0; (device <= 0x1F) && !rc; device++) { | |
2402 | irqs.barber_pole = (irqs.barber_pole + 1) & 0x03; | |
2403 | ||
2404 | ID = 0xFFFFFFFF; | |
2405 | pci_bus->number = hold_bus_node->base; | |
2406 | pci_bus_read_config_dword(pci_bus, PCI_DEVFN(device, 0), | |
2407 | PCI_VENDOR_ID, &ID); | |
2408 | pci_bus->number = func->bus; | |
2409 | ||
2410 | if (ID != 0xFFFFFFFF) { /* device Present */ | |
2411 | /* Setup slot structure. */ | |
2412 | new_slot = shpchp_slot_create(hold_bus_node->base); | |
2413 | ||
2414 | if (new_slot == NULL) { | |
2415 | /* Out of memory */ | |
2416 | rc = -ENOMEM; | |
2417 | continue; | |
2418 | } | |
2419 | ||
2420 | new_slot->bus = hold_bus_node->base; | |
2421 | new_slot->device = device; | |
2422 | new_slot->function = 0; | |
2423 | new_slot->is_a_board = 1; | |
2424 | new_slot->status = 0; | |
2425 | ||
2426 | rc = configure_new_device(ctrl, new_slot, 1, &temp_resources, func->bus, func->device); | |
2427 | dbg("configure_new_device rc=0x%x\n",rc); | |
2428 | } /* End of IF (device in slot?) */ | |
2429 | } /* End of FOR loop */ | |
2430 | ||
2431 | if (rc) { | |
2432 | shpchp_destroy_resource_list(&temp_resources); | |
2433 | ||
2434 | return_resource(&(resources->bus_head), hold_bus_node); | |
2435 | return_resource(&(resources->io_head), hold_IO_node); | |
2436 | return_resource(&(resources->mem_head), hold_mem_node); | |
2437 | return_resource(&(resources->p_mem_head), hold_p_mem_node); | |
2438 | return(rc); | |
2439 | } | |
2440 | ||
2441 | /* save the interrupt routing information */ | |
2442 | if (resources->irqs) { | |
2443 | resources->irqs->interrupt[0] = irqs.interrupt[0]; | |
2444 | resources->irqs->interrupt[1] = irqs.interrupt[1]; | |
2445 | resources->irqs->interrupt[2] = irqs.interrupt[2]; | |
2446 | resources->irqs->interrupt[3] = irqs.interrupt[3]; | |
2447 | resources->irqs->valid_INT = irqs.valid_INT; | |
2448 | } else if (!behind_bridge) { | |
2449 | /* We need to hook up the interrupts here */ | |
2450 | for (cloop = 0; cloop < 4; cloop++) { | |
2451 | if (irqs.valid_INT & (0x01 << cloop)) { | |
2452 | rc = shpchp_set_irq(func->bus, func->device, | |
2453 | 0x0A + cloop, irqs.interrupt[cloop]); | |
2454 | if (rc) { | |
2455 | shpchp_destroy_resource_list (&temp_resources); | |
2456 | return_resource(&(resources->bus_head), hold_bus_node); | |
2457 | return_resource(&(resources->io_head), hold_IO_node); | |
2458 | return_resource(&(resources->mem_head), hold_mem_node); | |
2459 | return_resource(&(resources->p_mem_head), hold_p_mem_node); | |
2460 | return rc; | |
2461 | } | |
2462 | } | |
2463 | } /* end of for loop */ | |
2464 | } | |
2465 | ||
2466 | /* Return unused bus resources | |
2467 | * First use the temporary node to store information for the board | |
2468 | */ | |
2469 | if (hold_bus_node && bus_node && temp_resources.bus_head) { | |
2470 | hold_bus_node->length = bus_node->base - hold_bus_node->base; | |
2471 | ||
2472 | hold_bus_node->next = func->bus_head; | |
2473 | func->bus_head = hold_bus_node; | |
2474 | ||
2475 | temp_byte = (u8)(temp_resources.bus_head->base - 1); | |
2476 | ||
2477 | /* set subordinate bus */ | |
2478 | dbg("re-set subordinate bus = 0x%x\n", temp_byte); | |
2479 | rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte); | |
2480 | ||
2481 | if (temp_resources.bus_head->length == 0) { | |
2482 | kfree(temp_resources.bus_head); | |
2483 | temp_resources.bus_head = NULL; | |
2484 | } else { | |
2485 | dbg("return bus res of b:d(0x%x:%x) base:len(0x%x:%x)\n", | |
2486 | func->bus, func->device, temp_resources.bus_head->base, temp_resources.bus_head->length); | |
2487 | return_resource(&(resources->bus_head), temp_resources.bus_head); | |
2488 | } | |
2489 | } | |
2490 | ||
2491 | /* If we have IO space available and there is some left, | |
2492 | * return the unused portion | |
2493 | */ | |
2494 | if (hold_IO_node && temp_resources.io_head) { | |
2495 | io_node = do_pre_bridge_resource_split(&(temp_resources.io_head), | |
2496 | &hold_IO_node, 0x1000); | |
2497 | ||
2498 | /* Check if we were able to split something off */ | |
2499 | if (io_node) { | |
2500 | hold_IO_node->base = io_node->base + io_node->length; | |
2501 | ||
2502 | RES_CHECK(hold_IO_node->base, 8); | |
2503 | temp_byte = (u8)((hold_IO_node->base) >> 8); | |
2504 | rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_BASE, temp_byte); | |
2505 | ||
2506 | return_resource(&(resources->io_head), io_node); | |
2507 | } | |
2508 | ||
2509 | io_node = do_bridge_resource_split(&(temp_resources.io_head), 0x1000); | |
2510 | ||
2511 | /* Check if we were able to split something off */ | |
2512 | if (io_node) { | |
2513 | /* First use the temporary node to store information for the board */ | |
2514 | hold_IO_node->length = io_node->base - hold_IO_node->base; | |
2515 | ||
2516 | /* If we used any, add it to the board's list */ | |
2517 | if (hold_IO_node->length) { | |
2518 | hold_IO_node->next = func->io_head; | |
2519 | func->io_head = hold_IO_node; | |
2520 | ||
2521 | RES_CHECK(io_node->base - 1, 8); | |
2522 | temp_byte = (u8)((io_node->base - 1) >> 8); | |
2523 | rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_LIMIT, temp_byte); | |
2524 | ||
2525 | return_resource(&(resources->io_head), io_node); | |
2526 | } else { | |
2527 | /* it doesn't need any IO */ | |
2528 | temp_byte = 0x00; | |
2529 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte); | |
2530 | ||
2531 | return_resource(&(resources->io_head), io_node); | |
2532 | kfree(hold_IO_node); | |
2533 | } | |
2534 | } else { | |
2535 | /* it used most of the range */ | |
2536 | hold_IO_node->next = func->io_head; | |
2537 | func->io_head = hold_IO_node; | |
2538 | } | |
2539 | } else if (hold_IO_node) { | |
2540 | /* it used the whole range */ | |
2541 | hold_IO_node->next = func->io_head; | |
2542 | func->io_head = hold_IO_node; | |
2543 | } | |
2544 | ||
2545 | /* If we have memory space available and there is some left, | |
2546 | * return the unused portion | |
2547 | */ | |
2548 | if (hold_mem_node && temp_resources.mem_head) { | |
2549 | mem_node = do_pre_bridge_resource_split(&(temp_resources.mem_head), &hold_mem_node, 0x100000L); | |
2550 | ||
2551 | /* Check if we were able to split something off */ | |
2552 | if (mem_node) { | |
2553 | hold_mem_node->base = mem_node->base + mem_node->length; | |
2554 | ||
2555 | RES_CHECK(hold_mem_node->base, 16); | |
2556 | temp_word = (u32)((hold_mem_node->base) >> 16); | |
2557 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_BASE, temp_word); | |
2558 | ||
2559 | return_resource(&(resources->mem_head), mem_node); | |
2560 | } | |
2561 | ||
2562 | mem_node = do_bridge_resource_split(&(temp_resources.mem_head), 0x100000L); | |
2563 | ||
2564 | /* Check if we were able to split something off */ | |
2565 | if (mem_node) { | |
2566 | /* First use the temporary node to store information for the board */ | |
2567 | hold_mem_node->length = mem_node->base - hold_mem_node->base; | |
2568 | ||
2569 | if (hold_mem_node->length) { | |
2570 | hold_mem_node->next = func->mem_head; | |
2571 | func->mem_head = hold_mem_node; | |
2572 | ||
2573 | /* configure end address */ | |
2574 | RES_CHECK(mem_node->base - 1, 16); | |
2575 | temp_word = (u32)((mem_node->base - 1) >> 16); | |
2576 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); | |
2577 | ||
2578 | /* Return unused resources to the pool */ | |
2579 | return_resource(&(resources->mem_head), mem_node); | |
2580 | } else { | |
2581 | /* it doesn't need any Mem */ | |
2582 | temp_word = 0x0000; | |
2583 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); | |
2584 | ||
2585 | return_resource(&(resources->mem_head), mem_node); | |
2586 | kfree(hold_mem_node); | |
2587 | } | |
2588 | } else { | |
2589 | /* it used most of the range */ | |
2590 | hold_mem_node->next = func->mem_head; | |
2591 | func->mem_head = hold_mem_node; | |
2592 | } | |
2593 | } else if (hold_mem_node) { | |
2594 | /* it used the whole range */ | |
2595 | hold_mem_node->next = func->mem_head; | |
2596 | func->mem_head = hold_mem_node; | |
2597 | } | |
2598 | ||
2599 | /* If we have prefetchable memory space available and there is some | |
2600 | * left at the end, return the unused portion | |
2601 | */ | |
2602 | if (hold_p_mem_node && temp_resources.p_mem_head) { | |
2603 | p_mem_node = do_pre_bridge_resource_split(&(temp_resources.p_mem_head), | |
2604 | &hold_p_mem_node, 0x100000L); | |
2605 | ||
2606 | /* Check if we were able to split something off */ | |
2607 | if (p_mem_node) { | |
2608 | hold_p_mem_node->base = p_mem_node->base + p_mem_node->length; | |
2609 | ||
2610 | RES_CHECK(hold_p_mem_node->base, 16); | |
2611 | temp_word = (u32)((hold_p_mem_node->base) >> 16); | |
2612 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word); | |
2613 | ||
2614 | return_resource(&(resources->p_mem_head), p_mem_node); | |
2615 | } | |
2616 | ||
2617 | p_mem_node = do_bridge_resource_split(&(temp_resources.p_mem_head), 0x100000L); | |
2618 | ||
2619 | /* Check if we were able to split something off */ | |
2620 | if (p_mem_node) { | |
2621 | /* First use the temporary node to store information for the board */ | |
2622 | hold_p_mem_node->length = p_mem_node->base - hold_p_mem_node->base; | |
2623 | ||
2624 | /* If we used any, add it to the board's list */ | |
2625 | if (hold_p_mem_node->length) { | |
2626 | hold_p_mem_node->next = func->p_mem_head; | |
2627 | func->p_mem_head = hold_p_mem_node; | |
2628 | ||
2629 | RES_CHECK(p_mem_node->base - 1, 16); | |
2630 | temp_word = (u32)((p_mem_node->base - 1) >> 16); | |
2631 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); | |
2632 | ||
2633 | return_resource(&(resources->p_mem_head), p_mem_node); | |
2634 | } else { | |
2635 | /* it doesn't need any PMem */ | |
2636 | temp_word = 0x0000; | |
2637 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); | |
2638 | ||
2639 | return_resource(&(resources->p_mem_head), p_mem_node); | |
2640 | kfree(hold_p_mem_node); | |
2641 | } | |
2642 | } else { | |
2643 | /* it used the most of the range */ | |
2644 | hold_p_mem_node->next = func->p_mem_head; | |
2645 | func->p_mem_head = hold_p_mem_node; | |
2646 | } | |
2647 | } else if (hold_p_mem_node) { | |
2648 | /* it used the whole range */ | |
2649 | hold_p_mem_node->next = func->p_mem_head; | |
2650 | func->p_mem_head = hold_p_mem_node; | |
2651 | } | |
2652 | ||
2653 | /* We should be configuring an IRQ and the bridge's base address | |
2654 | * registers if it needs them. Although we have never seen such | |
2655 | * a device | |
2656 | */ | |
2657 | ||
2658 | shpchprm_enable_card(ctrl, func, PCI_HEADER_TYPE_BRIDGE); | |
2659 | ||
2660 | dbg("PCI Bridge Hot-Added s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus, func->device, func->function); | |
2661 | } else if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_NORMAL) { | |
2662 | /* Standard device */ | |
2663 | u64 base64; | |
2664 | rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code); | |
2665 | ||
2666 | if (class_code == PCI_BASE_CLASS_DISPLAY) | |
2667 | return (DEVICE_TYPE_NOT_SUPPORTED); | |
2668 | ||
2669 | /* Figure out IO and memory needs */ | |
2670 | for (cloop = PCI_BASE_ADDRESS_0; cloop <= PCI_BASE_ADDRESS_5; cloop += 4) { | |
2671 | temp_register = 0xFFFFFFFF; | |
2672 | ||
2673 | rc = pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register); | |
2674 | rc = pci_bus_read_config_dword(pci_bus, devfn, cloop, &temp_register); | |
2675 | dbg("Bar[%x]=0x%x on bus:dev:func(0x%x:%x:%x)\n", cloop, temp_register, func->bus, func->device, | |
2676 | func->function); | |
2677 | ||
2678 | if (!temp_register) | |
2679 | continue; | |
2680 | ||
2681 | base64 = 0L; | |
2682 | if (temp_register & PCI_BASE_ADDRESS_SPACE_IO) { | |
2683 | /* Map IO */ | |
2684 | ||
2685 | /* set base = amount of IO space */ | |
2686 | base = temp_register & 0xFFFFFFFC; | |
2687 | base = ~base + 1; | |
2688 | ||
2689 | dbg("NEED IO length(0x%x)\n", base); | |
2690 | io_node = get_io_resource(&(resources->io_head),(ulong)base); | |
2691 | ||
2692 | /* allocate the resource to the board */ | |
2693 | if (io_node) { | |
2694 | dbg("Got IO base=0x%x(length=0x%x)\n", io_node->base, io_node->length); | |
2695 | base = (u32)io_node->base; | |
2696 | io_node->next = func->io_head; | |
2697 | func->io_head = io_node; | |
2698 | } else { | |
2699 | err("Got NO IO resource(length=0x%x)\n", base); | |
2700 | return -ENOMEM; | |
2701 | } | |
2702 | } else { /* map MEM */ | |
2703 | int prefetchable = 1; | |
2704 | struct pci_resource **res_node = &func->p_mem_head; | |
2705 | char *res_type_str = "PMEM"; | |
2706 | u32 temp_register2; | |
2707 | ||
2708 | if (!(temp_register & PCI_BASE_ADDRESS_MEM_PREFETCH)) { | |
2709 | prefetchable = 0; | |
2710 | res_node = &func->mem_head; | |
2711 | res_type_str++; | |
2712 | } | |
2713 | ||
2714 | base = temp_register & 0xFFFFFFF0; | |
2715 | base = ~base + 1; | |
2716 | ||
2717 | switch (temp_register & PCI_BASE_ADDRESS_MEM_TYPE_MASK) { | |
2718 | case PCI_BASE_ADDRESS_MEM_TYPE_32: | |
2719 | dbg("NEED 32 %s bar=0x%x(length=0x%x)\n", res_type_str, temp_register, base); | |
2720 | ||
2721 | if (prefetchable && resources->p_mem_head) | |
2722 | mem_node=get_resource(&(resources->p_mem_head), (ulong)base); | |
2723 | else { | |
2724 | if (prefetchable) | |
2725 | dbg("using MEM for PMEM\n"); | |
2726 | mem_node=get_resource(&(resources->mem_head), (ulong)base); | |
2727 | } | |
2728 | ||
2729 | /* allocate the resource to the board */ | |
2730 | if (mem_node) { | |
2731 | base = (u32)mem_node->base; | |
2732 | mem_node->next = *res_node; | |
2733 | *res_node = mem_node; | |
2734 | dbg("Got 32 %s base=0x%x(length=0x%x)\n", res_type_str, mem_node->base, | |
2735 | mem_node->length); | |
2736 | } else { | |
2737 | err("Got NO 32 %s resource(length=0x%x)\n", res_type_str, base); | |
2738 | return -ENOMEM; | |
2739 | } | |
2740 | break; | |
2741 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
2742 | rc = pci_bus_read_config_dword(pci_bus, devfn, cloop+4, &temp_register2); | |
2743 | dbg("NEED 64 %s bar=0x%x:%x(length=0x%x)\n", res_type_str, temp_register2, | |
2744 | temp_register, base); | |
2745 | ||
2746 | if (prefetchable && resources->p_mem_head) | |
2747 | mem_node = get_resource(&(resources->p_mem_head), (ulong)base); | |
2748 | else { | |
2749 | if (prefetchable) | |
2750 | dbg("using MEM for PMEM\n"); | |
2751 | mem_node = get_resource(&(resources->mem_head), (ulong)base); | |
2752 | } | |
2753 | ||
2754 | /* allocate the resource to the board */ | |
2755 | if (mem_node) { | |
2756 | base64 = mem_node->base; | |
2757 | mem_node->next = *res_node; | |
2758 | *res_node = mem_node; | |
2759 | dbg("Got 64 %s base=0x%x:%x(length=%x)\n", res_type_str, (u32)(base64 >> 32), | |
2760 | (u32)base64, mem_node->length); | |
2761 | } else { | |
2762 | err("Got NO 64 %s resource(length=0x%x)\n", res_type_str, base); | |
2763 | return -ENOMEM; | |
2764 | } | |
2765 | break; | |
2766 | default: | |
2767 | dbg("reserved BAR type=0x%x\n", temp_register); | |
2768 | break; | |
2769 | } | |
2770 | ||
2771 | } | |
2772 | ||
2773 | if (base64) { | |
2774 | rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, (u32)base64); | |
2775 | cloop += 4; | |
2776 | base64 >>= 32; | |
2777 | ||
2778 | if (base64) { | |
2779 | dbg("%s: high dword of base64(0x%x) set to 0\n", __FUNCTION__, (u32)base64); | |
2780 | base64 = 0x0L; | |
2781 | } | |
2782 | ||
2783 | rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, (u32)base64); | |
2784 | } else { | |
2785 | rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base); | |
2786 | } | |
2787 | } /* End of base register loop */ | |
2788 | ||
2789 | #if defined(CONFIG_X86_64) | |
2790 | /* Figure out which interrupt pin this function uses */ | |
2791 | rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_INTERRUPT_PIN, &temp_byte); | |
2792 | ||
2793 | /* If this function needs an interrupt and we are behind a bridge | |
2794 | and the pin is tied to something that's alread mapped, | |
2795 | set this one the same | |
2796 | */ | |
2797 | if (temp_byte && resources->irqs && | |
2798 | (resources->irqs->valid_INT & | |
2799 | (0x01 << ((temp_byte + resources->irqs->barber_pole - 1) & 0x03)))) { | |
2800 | /* We have to share with something already set up */ | |
2801 | IRQ = resources->irqs->interrupt[(temp_byte + resources->irqs->barber_pole - 1) & 0x03]; | |
2802 | } else { | |
2803 | /* Program IRQ based on card type */ | |
2804 | rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code); | |
2805 | ||
2806 | if (class_code == PCI_BASE_CLASS_STORAGE) { | |
2807 | IRQ = shpchp_disk_irq; | |
2808 | } else { | |
2809 | IRQ = shpchp_nic_irq; | |
2810 | } | |
2811 | } | |
2812 | ||
2813 | /* IRQ Line */ | |
2814 | rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_INTERRUPT_LINE, IRQ); | |
2815 | ||
2816 | if (!behind_bridge) { | |
2817 | rc = shpchp_set_irq(func->bus, func->device, temp_byte + 0x09, IRQ); | |
2818 | if (rc) | |
2819 | return(1); | |
2820 | } else { | |
2821 | /* TBD - this code may also belong in the other clause of this If statement */ | |
2822 | resources->irqs->interrupt[(temp_byte + resources->irqs->barber_pole - 1) & 0x03] = IRQ; | |
2823 | resources->irqs->valid_INT |= 0x01 << (temp_byte + resources->irqs->barber_pole - 1) & 0x03; | |
2824 | } | |
2825 | #endif | |
2826 | /* Disable ROM base Address */ | |
2827 | temp_word = 0x00L; | |
2828 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_ROM_ADDRESS, temp_word); | |
2829 | ||
2830 | /* Set HP parameters (Cache Line Size, Latency Timer) */ | |
2831 | rc = shpchprm_set_hpp(ctrl, func, PCI_HEADER_TYPE_NORMAL); | |
2832 | if (rc) | |
2833 | return rc; | |
2834 | ||
2835 | shpchprm_enable_card(ctrl, func, PCI_HEADER_TYPE_NORMAL); | |
2836 | ||
2837 | dbg("PCI function Hot-Added s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus, func->device, func->function); | |
2838 | } /* End of Not-A-Bridge else */ | |
2839 | else { | |
2840 | /* It's some strange type of PCI adapter (Cardbus?) */ | |
2841 | return(DEVICE_TYPE_NOT_SUPPORTED); | |
2842 | } | |
2843 | ||
2844 | func->configured = 1; | |
2845 | ||
2846 | return 0; | |
2847 | } | |
2848 |