Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Compaq 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 | * | |
8 | * All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or (at | |
13 | * your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
18 | * NON INFRINGEMENT. See the GNU General Public License for more | |
19 | * details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | * | |
25 | * Send feedback to <greg@kroah.com> | |
26 | * | |
27 | */ | |
28 | ||
1da177e4 LT |
29 | #include <linux/module.h> |
30 | #include <linux/kernel.h> | |
31 | #include <linux/types.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/workqueue.h> | |
34 | #include <linux/interrupt.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/wait.h> | |
1da177e4 | 37 | #include <linux/pci.h> |
7a54f25c | 38 | #include <linux/pci_hotplug.h> |
fa007d8b | 39 | #include <linux/kthread.h> |
1da177e4 LT |
40 | #include "cpqphp.h" |
41 | ||
42 | static u32 configure_new_device(struct controller* ctrl, struct pci_func *func, | |
43 | u8 behind_bridge, struct resource_lists *resources); | |
44 | static int configure_new_function(struct controller* ctrl, struct pci_func *func, | |
45 | u8 behind_bridge, struct resource_lists *resources); | |
46 | static void interrupt_event_handler(struct controller *ctrl); | |
47 | ||
1da177e4 | 48 | |
fa007d8b CH |
49 | static struct task_struct *cpqhp_event_thread; |
50 | static unsigned long pushbutton_pending; /* = 0 */ | |
1da177e4 LT |
51 | |
52 | /* delay is in jiffies to wait for */ | |
53 | static void long_delay(int delay) | |
54 | { | |
fa007d8b CH |
55 | /* |
56 | * XXX(hch): if someone is bored please convert all callers | |
57 | * to call msleep_interruptible directly. They really want | |
58 | * to specify timeouts in natural units and spend a lot of | |
59 | * effort converting them to jiffies.. | |
1da177e4 | 60 | */ |
1da177e4 | 61 | msleep_interruptible(jiffies_to_msecs(delay)); |
1da177e4 LT |
62 | } |
63 | ||
64 | ||
65 | /* FIXME: The following line needs to be somewhere else... */ | |
66 | #define WRONG_BUS_FREQUENCY 0x07 | |
67 | static u8 handle_switch_change(u8 change, struct controller * ctrl) | |
68 | { | |
69 | int hp_slot; | |
70 | u8 rc = 0; | |
71 | u16 temp_word; | |
72 | struct pci_func *func; | |
73 | struct event_info *taskInfo; | |
74 | ||
75 | if (!change) | |
76 | return 0; | |
77 | ||
78 | /* Switch Change */ | |
79 | dbg("cpqsbd: Switch interrupt received.\n"); | |
80 | ||
81 | for (hp_slot = 0; hp_slot < 6; hp_slot++) { | |
82 | if (change & (0x1L << hp_slot)) { | |
427438c6 | 83 | /* |
1da177e4 | 84 | * this one changed. |
427438c6 | 85 | */ |
1da177e4 LT |
86 | func = cpqhp_slot_find(ctrl->bus, |
87 | (hp_slot + ctrl->slot_device_offset), 0); | |
88 | ||
89 | /* this is the structure that tells the worker thread | |
427438c6 AC |
90 | * what to do |
91 | */ | |
1da177e4 LT |
92 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); |
93 | ctrl->next_event = (ctrl->next_event + 1) % 10; | |
94 | taskInfo->hp_slot = hp_slot; | |
95 | ||
96 | rc++; | |
97 | ||
98 | temp_word = ctrl->ctrl_int_comp >> 16; | |
99 | func->presence_save = (temp_word >> hp_slot) & 0x01; | |
100 | func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02; | |
101 | ||
102 | if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) { | |
427438c6 | 103 | /* |
1da177e4 | 104 | * Switch opened |
427438c6 | 105 | */ |
1da177e4 LT |
106 | |
107 | func->switch_save = 0; | |
108 | ||
109 | taskInfo->event_type = INT_SWITCH_OPEN; | |
110 | } else { | |
427438c6 | 111 | /* |
1da177e4 | 112 | * Switch closed |
427438c6 | 113 | */ |
1da177e4 LT |
114 | |
115 | func->switch_save = 0x10; | |
116 | ||
117 | taskInfo->event_type = INT_SWITCH_CLOSE; | |
118 | } | |
119 | } | |
120 | } | |
121 | ||
122 | return rc; | |
123 | } | |
124 | ||
125 | /** | |
26e6c66e | 126 | * cpqhp_find_slot - find the struct slot of given device |
1da177e4 LT |
127 | * @ctrl: scan lots of this controller |
128 | * @device: the device id to find | |
129 | */ | |
130 | static struct slot *cpqhp_find_slot(struct controller *ctrl, u8 device) | |
131 | { | |
132 | struct slot *slot = ctrl->slot; | |
133 | ||
1d3ecf13 | 134 | while (slot && (slot->device != device)) |
1da177e4 | 135 | slot = slot->next; |
1da177e4 LT |
136 | |
137 | return slot; | |
138 | } | |
139 | ||
140 | ||
141 | static u8 handle_presence_change(u16 change, struct controller * ctrl) | |
142 | { | |
143 | int hp_slot; | |
144 | u8 rc = 0; | |
145 | u8 temp_byte; | |
146 | u16 temp_word; | |
147 | struct pci_func *func; | |
148 | struct event_info *taskInfo; | |
149 | struct slot *p_slot; | |
150 | ||
151 | if (!change) | |
152 | return 0; | |
153 | ||
427438c6 | 154 | /* |
1da177e4 | 155 | * Presence Change |
427438c6 | 156 | */ |
1da177e4 LT |
157 | dbg("cpqsbd: Presence/Notify input change.\n"); |
158 | dbg(" Changed bits are 0x%4.4x\n", change ); | |
159 | ||
160 | for (hp_slot = 0; hp_slot < 6; hp_slot++) { | |
161 | if (change & (0x0101 << hp_slot)) { | |
427438c6 | 162 | /* |
1da177e4 | 163 | * this one changed. |
427438c6 | 164 | */ |
1da177e4 LT |
165 | func = cpqhp_slot_find(ctrl->bus, |
166 | (hp_slot + ctrl->slot_device_offset), 0); | |
167 | ||
168 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); | |
169 | ctrl->next_event = (ctrl->next_event + 1) % 10; | |
170 | taskInfo->hp_slot = hp_slot; | |
171 | ||
172 | rc++; | |
173 | ||
174 | p_slot = cpqhp_find_slot(ctrl, hp_slot + (readb(ctrl->hpc_reg + SLOT_MASK) >> 4)); | |
175 | if (!p_slot) | |
176 | return 0; | |
177 | ||
178 | /* If the switch closed, must be a button | |
427438c6 AC |
179 | * If not in button mode, nevermind |
180 | */ | |
1da177e4 LT |
181 | if (func->switch_save && (ctrl->push_button == 1)) { |
182 | temp_word = ctrl->ctrl_int_comp >> 16; | |
183 | temp_byte = (temp_word >> hp_slot) & 0x01; | |
184 | temp_byte |= (temp_word >> (hp_slot + 7)) & 0x02; | |
185 | ||
186 | if (temp_byte != func->presence_save) { | |
427438c6 | 187 | /* |
1da177e4 | 188 | * button Pressed (doesn't do anything) |
427438c6 | 189 | */ |
1da177e4 LT |
190 | dbg("hp_slot %d button pressed\n", hp_slot); |
191 | taskInfo->event_type = INT_BUTTON_PRESS; | |
192 | } else { | |
427438c6 | 193 | /* |
1da177e4 | 194 | * button Released - TAKE ACTION!!!! |
427438c6 | 195 | */ |
1da177e4 LT |
196 | dbg("hp_slot %d button released\n", hp_slot); |
197 | taskInfo->event_type = INT_BUTTON_RELEASE; | |
198 | ||
199 | /* Cancel if we are still blinking */ | |
200 | if ((p_slot->state == BLINKINGON_STATE) | |
201 | || (p_slot->state == BLINKINGOFF_STATE)) { | |
202 | taskInfo->event_type = INT_BUTTON_CANCEL; | |
203 | dbg("hp_slot %d button cancel\n", hp_slot); | |
204 | } else if ((p_slot->state == POWERON_STATE) | |
205 | || (p_slot->state == POWEROFF_STATE)) { | |
206 | /* info(msg_button_ignore, p_slot->number); */ | |
207 | taskInfo->event_type = INT_BUTTON_IGNORE; | |
208 | dbg("hp_slot %d button ignore\n", hp_slot); | |
209 | } | |
210 | } | |
211 | } else { | |
212 | /* Switch is open, assume a presence change | |
427438c6 AC |
213 | * Save the presence state |
214 | */ | |
1da177e4 LT |
215 | temp_word = ctrl->ctrl_int_comp >> 16; |
216 | func->presence_save = (temp_word >> hp_slot) & 0x01; | |
217 | func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02; | |
218 | ||
219 | if ((!(ctrl->ctrl_int_comp & (0x010000 << hp_slot))) || | |
220 | (!(ctrl->ctrl_int_comp & (0x01000000 << hp_slot)))) { | |
221 | /* Present */ | |
222 | taskInfo->event_type = INT_PRESENCE_ON; | |
223 | } else { | |
224 | /* Not Present */ | |
225 | taskInfo->event_type = INT_PRESENCE_OFF; | |
226 | } | |
227 | } | |
228 | } | |
229 | } | |
230 | ||
231 | return rc; | |
232 | } | |
233 | ||
234 | ||
235 | static u8 handle_power_fault(u8 change, struct controller * ctrl) | |
236 | { | |
237 | int hp_slot; | |
238 | u8 rc = 0; | |
239 | struct pci_func *func; | |
240 | struct event_info *taskInfo; | |
241 | ||
242 | if (!change) | |
243 | return 0; | |
244 | ||
427438c6 | 245 | /* |
1da177e4 | 246 | * power fault |
427438c6 | 247 | */ |
1da177e4 LT |
248 | |
249 | info("power fault interrupt\n"); | |
250 | ||
251 | for (hp_slot = 0; hp_slot < 6; hp_slot++) { | |
252 | if (change & (0x01 << hp_slot)) { | |
427438c6 | 253 | /* |
1da177e4 | 254 | * this one changed. |
427438c6 | 255 | */ |
1da177e4 LT |
256 | func = cpqhp_slot_find(ctrl->bus, |
257 | (hp_slot + ctrl->slot_device_offset), 0); | |
258 | ||
259 | taskInfo = &(ctrl->event_queue[ctrl->next_event]); | |
260 | ctrl->next_event = (ctrl->next_event + 1) % 10; | |
261 | taskInfo->hp_slot = hp_slot; | |
262 | ||
263 | rc++; | |
264 | ||
265 | if (ctrl->ctrl_int_comp & (0x00000100 << hp_slot)) { | |
427438c6 | 266 | /* |
1da177e4 | 267 | * power fault Cleared |
427438c6 | 268 | */ |
1da177e4 LT |
269 | func->status = 0x00; |
270 | ||
271 | taskInfo->event_type = INT_POWER_FAULT_CLEAR; | |
272 | } else { | |
427438c6 | 273 | /* |
1da177e4 | 274 | * power fault |
427438c6 | 275 | */ |
1da177e4 LT |
276 | taskInfo->event_type = INT_POWER_FAULT; |
277 | ||
278 | if (ctrl->rev < 4) { | |
279 | amber_LED_on (ctrl, hp_slot); | |
280 | green_LED_off (ctrl, hp_slot); | |
281 | set_SOGO (ctrl); | |
282 | ||
283 | /* this is a fatal condition, we want | |
284 | * to crash the machine to protect from | |
285 | * data corruption. simulated_NMI | |
286 | * shouldn't ever return */ | |
287 | /* FIXME | |
288 | simulated_NMI(hp_slot, ctrl); */ | |
289 | ||
290 | /* The following code causes a software | |
291 | * crash just in case simulated_NMI did | |
292 | * return */ | |
293 | /*FIXME | |
294 | panic(msg_power_fault); */ | |
295 | } else { | |
296 | /* set power fault status for this board */ | |
297 | func->status = 0xFF; | |
298 | info("power fault bit %x set\n", hp_slot); | |
299 | } | |
300 | } | |
301 | } | |
302 | } | |
303 | ||
304 | return rc; | |
305 | } | |
306 | ||
307 | ||
308 | /** | |
26e6c66e | 309 | * sort_by_size - sort nodes on the list by their length, smallest first. |
1da177e4 | 310 | * @head: list to sort |
1da177e4 LT |
311 | */ |
312 | static int sort_by_size(struct pci_resource **head) | |
313 | { | |
314 | struct pci_resource *current_res; | |
315 | struct pci_resource *next_res; | |
316 | int out_of_order = 1; | |
317 | ||
318 | if (!(*head)) | |
319 | return 1; | |
320 | ||
321 | if (!((*head)->next)) | |
322 | return 0; | |
323 | ||
324 | while (out_of_order) { | |
325 | out_of_order = 0; | |
326 | ||
327 | /* Special case for swapping list head */ | |
328 | if (((*head)->next) && | |
329 | ((*head)->length > (*head)->next->length)) { | |
330 | out_of_order++; | |
331 | current_res = *head; | |
332 | *head = (*head)->next; | |
333 | current_res->next = (*head)->next; | |
334 | (*head)->next = current_res; | |
335 | } | |
336 | ||
337 | current_res = *head; | |
338 | ||
339 | while (current_res->next && current_res->next->next) { | |
340 | if (current_res->next->length > current_res->next->next->length) { | |
341 | out_of_order++; | |
342 | next_res = current_res->next; | |
343 | current_res->next = current_res->next->next; | |
344 | current_res = current_res->next; | |
345 | next_res->next = current_res->next; | |
346 | current_res->next = next_res; | |
347 | } else | |
348 | current_res = current_res->next; | |
349 | } | |
350 | } /* End of out_of_order loop */ | |
351 | ||
352 | return 0; | |
353 | } | |
354 | ||
355 | ||
356 | /** | |
26e6c66e | 357 | * sort_by_max_size - sort nodes on the list by their length, largest first. |
1da177e4 | 358 | * @head: list to sort |
1da177e4 LT |
359 | */ |
360 | static int sort_by_max_size(struct pci_resource **head) | |
361 | { | |
362 | struct pci_resource *current_res; | |
363 | struct pci_resource *next_res; | |
364 | int out_of_order = 1; | |
365 | ||
366 | if (!(*head)) | |
367 | return 1; | |
368 | ||
369 | if (!((*head)->next)) | |
370 | return 0; | |
371 | ||
372 | while (out_of_order) { | |
373 | out_of_order = 0; | |
374 | ||
375 | /* Special case for swapping list head */ | |
376 | if (((*head)->next) && | |
377 | ((*head)->length < (*head)->next->length)) { | |
378 | out_of_order++; | |
379 | current_res = *head; | |
380 | *head = (*head)->next; | |
381 | current_res->next = (*head)->next; | |
382 | (*head)->next = current_res; | |
383 | } | |
384 | ||
385 | current_res = *head; | |
386 | ||
387 | while (current_res->next && current_res->next->next) { | |
388 | if (current_res->next->length < current_res->next->next->length) { | |
389 | out_of_order++; | |
390 | next_res = current_res->next; | |
391 | current_res->next = current_res->next->next; | |
392 | current_res = current_res->next; | |
393 | next_res->next = current_res->next; | |
394 | current_res->next = next_res; | |
395 | } else | |
396 | current_res = current_res->next; | |
397 | } | |
398 | } /* End of out_of_order loop */ | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | ||
404 | /** | |
26e6c66e RD |
405 | * do_pre_bridge_resource_split - find node of resources that are unused |
406 | * @head: new list head | |
407 | * @orig_head: original list head | |
408 | * @alignment: max node size (?) | |
1da177e4 LT |
409 | */ |
410 | static struct pci_resource *do_pre_bridge_resource_split(struct pci_resource **head, | |
411 | struct pci_resource **orig_head, u32 alignment) | |
412 | { | |
413 | struct pci_resource *prevnode = NULL; | |
414 | struct pci_resource *node; | |
415 | struct pci_resource *split_node; | |
416 | u32 rc; | |
417 | u32 temp_dword; | |
418 | dbg("do_pre_bridge_resource_split\n"); | |
419 | ||
420 | if (!(*head) || !(*orig_head)) | |
421 | return NULL; | |
422 | ||
423 | rc = cpqhp_resource_sort_and_combine(head); | |
424 | ||
425 | if (rc) | |
426 | return NULL; | |
427 | ||
428 | if ((*head)->base != (*orig_head)->base) | |
429 | return NULL; | |
430 | ||
431 | if ((*head)->length == (*orig_head)->length) | |
432 | return NULL; | |
433 | ||
434 | ||
435 | /* If we got here, there the bridge requires some of the resource, but | |
427438c6 AC |
436 | * we may be able to split some off of the front |
437 | */ | |
1da177e4 LT |
438 | |
439 | node = *head; | |
440 | ||
441 | if (node->length & (alignment -1)) { | |
442 | /* this one isn't an aligned length, so we'll make a new entry | |
427438c6 AC |
443 | * and split it up. |
444 | */ | |
1da177e4 LT |
445 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); |
446 | ||
447 | if (!split_node) | |
448 | return NULL; | |
449 | ||
450 | temp_dword = (node->length | (alignment-1)) + 1 - alignment; | |
451 | ||
452 | split_node->base = node->base; | |
453 | split_node->length = temp_dword; | |
454 | ||
455 | node->length -= temp_dword; | |
456 | node->base += split_node->length; | |
457 | ||
458 | /* Put it in the list */ | |
459 | *head = split_node; | |
460 | split_node->next = node; | |
461 | } | |
462 | ||
463 | if (node->length < alignment) | |
464 | return NULL; | |
465 | ||
466 | /* Now unlink it */ | |
467 | if (*head == node) { | |
468 | *head = node->next; | |
469 | } else { | |
470 | prevnode = *head; | |
471 | while (prevnode->next != node) | |
472 | prevnode = prevnode->next; | |
473 | ||
474 | prevnode->next = node->next; | |
475 | } | |
476 | node->next = NULL; | |
477 | ||
478 | return node; | |
479 | } | |
480 | ||
481 | ||
482 | /** | |
26e6c66e RD |
483 | * do_bridge_resource_split - find one node of resources that aren't in use |
484 | * @head: list head | |
485 | * @alignment: max node size (?) | |
1da177e4 LT |
486 | */ |
487 | static struct pci_resource *do_bridge_resource_split(struct pci_resource **head, u32 alignment) | |
488 | { | |
489 | struct pci_resource *prevnode = NULL; | |
490 | struct pci_resource *node; | |
491 | u32 rc; | |
492 | u32 temp_dword; | |
493 | ||
494 | rc = cpqhp_resource_sort_and_combine(head); | |
495 | ||
496 | if (rc) | |
497 | return NULL; | |
498 | ||
499 | node = *head; | |
500 | ||
501 | while (node->next) { | |
502 | prevnode = node; | |
503 | node = node->next; | |
504 | kfree(prevnode); | |
505 | } | |
506 | ||
507 | if (node->length < alignment) | |
508 | goto error; | |
509 | ||
510 | if (node->base & (alignment - 1)) { | |
511 | /* Short circuit if adjusted size is too small */ | |
512 | temp_dword = (node->base | (alignment-1)) + 1; | |
513 | if ((node->length - (temp_dword - node->base)) < alignment) | |
514 | goto error; | |
515 | ||
516 | node->length -= (temp_dword - node->base); | |
517 | node->base = temp_dword; | |
518 | } | |
519 | ||
520 | if (node->length & (alignment - 1)) | |
521 | /* There's stuff in use after this node */ | |
522 | goto error; | |
523 | ||
524 | return node; | |
525 | error: | |
526 | kfree(node); | |
527 | return NULL; | |
528 | } | |
529 | ||
530 | ||
531 | /** | |
26e6c66e | 532 | * get_io_resource - find first node of given size not in ISA aliasing window. |
1da177e4 LT |
533 | * @head: list to search |
534 | * @size: size of node to find, must be a power of two. | |
535 | * | |
26e6c66e | 536 | * Description: This function sorts the resource list by size and then returns |
1da177e4 LT |
537 | * returns the first node of "size" length that is not in the ISA aliasing |
538 | * window. If it finds a node larger than "size" it will split it up. | |
1da177e4 LT |
539 | */ |
540 | static struct pci_resource *get_io_resource(struct pci_resource **head, u32 size) | |
541 | { | |
542 | struct pci_resource *prevnode; | |
543 | struct pci_resource *node; | |
544 | struct pci_resource *split_node; | |
545 | u32 temp_dword; | |
546 | ||
547 | if (!(*head)) | |
548 | return NULL; | |
549 | ||
1d3ecf13 | 550 | if (cpqhp_resource_sort_and_combine(head)) |
1da177e4 LT |
551 | return NULL; |
552 | ||
1d3ecf13 | 553 | if (sort_by_size(head)) |
1da177e4 LT |
554 | return NULL; |
555 | ||
556 | for (node = *head; node; node = node->next) { | |
557 | if (node->length < size) | |
558 | continue; | |
559 | ||
560 | if (node->base & (size - 1)) { | |
561 | /* this one isn't base aligned properly | |
427438c6 AC |
562 | * so we'll make a new entry and split it up |
563 | */ | |
1da177e4 LT |
564 | temp_dword = (node->base | (size-1)) + 1; |
565 | ||
566 | /* Short circuit if adjusted size is too small */ | |
567 | if ((node->length - (temp_dword - node->base)) < size) | |
568 | continue; | |
569 | ||
570 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); | |
571 | ||
572 | if (!split_node) | |
573 | return NULL; | |
574 | ||
575 | split_node->base = node->base; | |
576 | split_node->length = temp_dword - node->base; | |
577 | node->base = temp_dword; | |
578 | node->length -= split_node->length; | |
579 | ||
580 | /* Put it in the list */ | |
581 | split_node->next = node->next; | |
582 | node->next = split_node; | |
583 | } /* End of non-aligned base */ | |
584 | ||
585 | /* Don't need to check if too small since we already did */ | |
586 | if (node->length > size) { | |
587 | /* this one is longer than we need | |
427438c6 AC |
588 | * so we'll make a new entry and split it up |
589 | */ | |
1da177e4 LT |
590 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); |
591 | ||
592 | if (!split_node) | |
593 | return NULL; | |
594 | ||
595 | split_node->base = node->base + size; | |
596 | split_node->length = node->length - size; | |
597 | node->length = size; | |
598 | ||
599 | /* Put it in the list */ | |
600 | split_node->next = node->next; | |
601 | node->next = split_node; | |
602 | } /* End of too big on top end */ | |
603 | ||
604 | /* For IO make sure it's not in the ISA aliasing space */ | |
605 | if (node->base & 0x300L) | |
606 | continue; | |
607 | ||
608 | /* If we got here, then it is the right size | |
427438c6 AC |
609 | * Now take it out of the list and break |
610 | */ | |
1da177e4 LT |
611 | if (*head == node) { |
612 | *head = node->next; | |
613 | } else { | |
614 | prevnode = *head; | |
615 | while (prevnode->next != node) | |
616 | prevnode = prevnode->next; | |
617 | ||
618 | prevnode->next = node->next; | |
619 | } | |
620 | node->next = NULL; | |
621 | break; | |
622 | } | |
623 | ||
624 | return node; | |
625 | } | |
626 | ||
627 | ||
628 | /** | |
26e6c66e | 629 | * get_max_resource - get largest node which has at least the given size. |
1da177e4 LT |
630 | * @head: the list to search the node in |
631 | * @size: the minimum size of the node to find | |
632 | * | |
633 | * Description: Gets the largest node that is at least "size" big from the | |
634 | * list pointed to by head. It aligns the node on top and bottom | |
635 | * to "size" alignment before returning it. | |
636 | */ | |
637 | static struct pci_resource *get_max_resource(struct pci_resource **head, u32 size) | |
638 | { | |
639 | struct pci_resource *max; | |
640 | struct pci_resource *temp; | |
641 | struct pci_resource *split_node; | |
642 | u32 temp_dword; | |
643 | ||
644 | if (cpqhp_resource_sort_and_combine(head)) | |
645 | return NULL; | |
646 | ||
647 | if (sort_by_max_size(head)) | |
648 | return NULL; | |
649 | ||
650 | for (max = *head; max; max = max->next) { | |
861fefbf | 651 | /* If not big enough we could probably just bail, |
427438c6 AC |
652 | * instead we'll continue to the next. |
653 | */ | |
1da177e4 LT |
654 | if (max->length < size) |
655 | continue; | |
656 | ||
657 | if (max->base & (size - 1)) { | |
658 | /* this one isn't base aligned properly | |
427438c6 AC |
659 | * so we'll make a new entry and split it up |
660 | */ | |
1da177e4 LT |
661 | temp_dword = (max->base | (size-1)) + 1; |
662 | ||
663 | /* Short circuit if adjusted size is too small */ | |
664 | if ((max->length - (temp_dword - max->base)) < size) | |
665 | continue; | |
666 | ||
667 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); | |
668 | ||
669 | if (!split_node) | |
670 | return NULL; | |
671 | ||
672 | split_node->base = max->base; | |
673 | split_node->length = temp_dword - max->base; | |
674 | max->base = temp_dword; | |
675 | max->length -= split_node->length; | |
676 | ||
677 | split_node->next = max->next; | |
678 | max->next = split_node; | |
679 | } | |
680 | ||
681 | if ((max->base + max->length) & (size - 1)) { | |
682 | /* this one isn't end aligned properly at the top | |
427438c6 AC |
683 | * so we'll make a new entry and split it up |
684 | */ | |
1da177e4 LT |
685 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); |
686 | ||
687 | if (!split_node) | |
688 | return NULL; | |
689 | temp_dword = ((max->base + max->length) & ~(size - 1)); | |
690 | split_node->base = temp_dword; | |
691 | split_node->length = max->length + max->base | |
692 | - split_node->base; | |
693 | max->length -= split_node->length; | |
694 | ||
695 | split_node->next = max->next; | |
696 | max->next = split_node; | |
697 | } | |
698 | ||
699 | /* Make sure it didn't shrink too much when we aligned it */ | |
700 | if (max->length < size) | |
701 | continue; | |
702 | ||
703 | /* Now take it out of the list */ | |
704 | temp = *head; | |
705 | if (temp == max) { | |
706 | *head = max->next; | |
707 | } else { | |
708 | while (temp && temp->next != max) { | |
709 | temp = temp->next; | |
710 | } | |
711 | ||
712 | temp->next = max->next; | |
713 | } | |
714 | ||
715 | max->next = NULL; | |
716 | break; | |
717 | } | |
718 | ||
719 | return max; | |
720 | } | |
721 | ||
722 | ||
723 | /** | |
26e6c66e | 724 | * get_resource - find resource of given size and split up larger ones. |
1da177e4 LT |
725 | * @head: the list to search for resources |
726 | * @size: the size limit to use | |
727 | * | |
728 | * Description: This function sorts the resource list by size and then | |
729 | * returns the first node of "size" length. If it finds a node | |
730 | * larger than "size" it will split it up. | |
731 | * | |
732 | * size must be a power of two. | |
733 | */ | |
734 | static struct pci_resource *get_resource(struct pci_resource **head, u32 size) | |
735 | { | |
736 | struct pci_resource *prevnode; | |
737 | struct pci_resource *node; | |
738 | struct pci_resource *split_node; | |
739 | u32 temp_dword; | |
740 | ||
741 | if (cpqhp_resource_sort_and_combine(head)) | |
742 | return NULL; | |
743 | ||
744 | if (sort_by_size(head)) | |
745 | return NULL; | |
746 | ||
747 | for (node = *head; node; node = node->next) { | |
748 | dbg("%s: req_size =%x node=%p, base=%x, length=%x\n", | |
66bef8c0 | 749 | __func__, size, node, node->base, node->length); |
1da177e4 LT |
750 | if (node->length < size) |
751 | continue; | |
752 | ||
753 | if (node->base & (size - 1)) { | |
66bef8c0 | 754 | dbg("%s: not aligned\n", __func__); |
1da177e4 | 755 | /* this one isn't base aligned properly |
427438c6 AC |
756 | * so we'll make a new entry and split it up |
757 | */ | |
1da177e4 LT |
758 | temp_dword = (node->base | (size-1)) + 1; |
759 | ||
760 | /* Short circuit if adjusted size is too small */ | |
761 | if ((node->length - (temp_dword - node->base)) < size) | |
762 | continue; | |
763 | ||
764 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); | |
765 | ||
766 | if (!split_node) | |
767 | return NULL; | |
768 | ||
769 | split_node->base = node->base; | |
770 | split_node->length = temp_dword - node->base; | |
771 | node->base = temp_dword; | |
772 | node->length -= split_node->length; | |
773 | ||
774 | split_node->next = node->next; | |
775 | node->next = split_node; | |
776 | } /* End of non-aligned base */ | |
777 | ||
778 | /* Don't need to check if too small since we already did */ | |
779 | if (node->length > size) { | |
66bef8c0 | 780 | dbg("%s: too big\n", __func__); |
1da177e4 | 781 | /* this one is longer than we need |
427438c6 AC |
782 | * so we'll make a new entry and split it up |
783 | */ | |
1da177e4 LT |
784 | split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); |
785 | ||
786 | if (!split_node) | |
787 | return NULL; | |
788 | ||
789 | split_node->base = node->base + size; | |
790 | split_node->length = node->length - size; | |
791 | node->length = size; | |
792 | ||
793 | /* Put it in the list */ | |
794 | split_node->next = node->next; | |
795 | node->next = split_node; | |
796 | } /* End of too big on top end */ | |
797 | ||
66bef8c0 | 798 | dbg("%s: got one!!!\n", __func__); |
1da177e4 LT |
799 | /* If we got here, then it is the right size |
800 | * Now take it out of the list */ | |
801 | if (*head == node) { | |
802 | *head = node->next; | |
803 | } else { | |
804 | prevnode = *head; | |
805 | while (prevnode->next != node) | |
806 | prevnode = prevnode->next; | |
807 | ||
808 | prevnode->next = node->next; | |
809 | } | |
810 | node->next = NULL; | |
811 | break; | |
812 | } | |
813 | return node; | |
814 | } | |
815 | ||
816 | ||
817 | /** | |
26e6c66e | 818 | * cpqhp_resource_sort_and_combine - sort nodes by base addresses and clean up |
1da177e4 LT |
819 | * @head: the list to sort and clean up |
820 | * | |
821 | * Description: Sorts all of the nodes in the list in ascending order by | |
822 | * their base addresses. Also does garbage collection by | |
823 | * combining adjacent nodes. | |
824 | * | |
26e6c66e | 825 | * Returns %0 if success. |
1da177e4 LT |
826 | */ |
827 | int cpqhp_resource_sort_and_combine(struct pci_resource **head) | |
828 | { | |
829 | struct pci_resource *node1; | |
830 | struct pci_resource *node2; | |
831 | int out_of_order = 1; | |
832 | ||
66bef8c0 | 833 | dbg("%s: head = %p, *head = %p\n", __func__, head, *head); |
1da177e4 LT |
834 | |
835 | if (!(*head)) | |
836 | return 1; | |
837 | ||
838 | dbg("*head->next = %p\n",(*head)->next); | |
839 | ||
840 | if (!(*head)->next) | |
841 | return 0; /* only one item on the list, already sorted! */ | |
842 | ||
843 | dbg("*head->base = 0x%x\n",(*head)->base); | |
844 | dbg("*head->next->base = 0x%x\n",(*head)->next->base); | |
845 | while (out_of_order) { | |
846 | out_of_order = 0; | |
847 | ||
848 | /* Special case for swapping list head */ | |
849 | if (((*head)->next) && | |
850 | ((*head)->base > (*head)->next->base)) { | |
851 | node1 = *head; | |
852 | (*head) = (*head)->next; | |
853 | node1->next = (*head)->next; | |
854 | (*head)->next = node1; | |
855 | out_of_order++; | |
856 | } | |
857 | ||
858 | node1 = (*head); | |
859 | ||
860 | while (node1->next && node1->next->next) { | |
861 | if (node1->next->base > node1->next->next->base) { | |
862 | out_of_order++; | |
863 | node2 = node1->next; | |
864 | node1->next = node1->next->next; | |
865 | node1 = node1->next; | |
866 | node2->next = node1->next; | |
867 | node1->next = node2; | |
868 | } else | |
869 | node1 = node1->next; | |
870 | } | |
871 | } /* End of out_of_order loop */ | |
872 | ||
873 | node1 = *head; | |
874 | ||
875 | while (node1 && node1->next) { | |
876 | if ((node1->base + node1->length) == node1->next->base) { | |
877 | /* Combine */ | |
878 | dbg("8..\n"); | |
879 | node1->length += node1->next->length; | |
880 | node2 = node1->next; | |
881 | node1->next = node1->next->next; | |
882 | kfree(node2); | |
883 | } else | |
884 | node1 = node1->next; | |
885 | } | |
886 | ||
887 | return 0; | |
888 | } | |
889 | ||
890 | ||
7d12e780 | 891 | irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data) |
1da177e4 LT |
892 | { |
893 | struct controller *ctrl = data; | |
894 | u8 schedule_flag = 0; | |
895 | u8 reset; | |
896 | u16 misc; | |
897 | u32 Diff; | |
898 | u32 temp_dword; | |
899 | ||
861fefbf | 900 | |
1da177e4 | 901 | misc = readw(ctrl->hpc_reg + MISC); |
427438c6 | 902 | /* |
1da177e4 | 903 | * Check to see if it was our interrupt |
427438c6 | 904 | */ |
1da177e4 LT |
905 | if (!(misc & 0x000C)) { |
906 | return IRQ_NONE; | |
907 | } | |
908 | ||
909 | if (misc & 0x0004) { | |
427438c6 | 910 | /* |
1da177e4 | 911 | * Serial Output interrupt Pending |
427438c6 | 912 | */ |
1da177e4 LT |
913 | |
914 | /* Clear the interrupt */ | |
915 | misc |= 0x0004; | |
916 | writew(misc, ctrl->hpc_reg + MISC); | |
917 | ||
918 | /* Read to clear posted writes */ | |
919 | misc = readw(ctrl->hpc_reg + MISC); | |
920 | ||
66bef8c0 | 921 | dbg ("%s - waking up\n", __func__); |
1da177e4 LT |
922 | wake_up_interruptible(&ctrl->queue); |
923 | } | |
924 | ||
925 | if (misc & 0x0008) { | |
926 | /* General-interrupt-input interrupt Pending */ | |
927 | Diff = readl(ctrl->hpc_reg + INT_INPUT_CLEAR) ^ ctrl->ctrl_int_comp; | |
928 | ||
929 | ctrl->ctrl_int_comp = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); | |
930 | ||
931 | /* Clear the interrupt */ | |
932 | writel(Diff, ctrl->hpc_reg + INT_INPUT_CLEAR); | |
933 | ||
934 | /* Read it back to clear any posted writes */ | |
935 | temp_dword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); | |
936 | ||
937 | if (!Diff) | |
938 | /* Clear all interrupts */ | |
939 | writel(0xFFFFFFFF, ctrl->hpc_reg + INT_INPUT_CLEAR); | |
940 | ||
941 | schedule_flag += handle_switch_change((u8)(Diff & 0xFFL), ctrl); | |
942 | schedule_flag += handle_presence_change((u16)((Diff & 0xFFFF0000L) >> 16), ctrl); | |
943 | schedule_flag += handle_power_fault((u8)((Diff & 0xFF00L) >> 8), ctrl); | |
944 | } | |
945 | ||
946 | reset = readb(ctrl->hpc_reg + RESET_FREQ_MODE); | |
947 | if (reset & 0x40) { | |
948 | /* Bus reset has completed */ | |
949 | reset &= 0xCF; | |
950 | writeb(reset, ctrl->hpc_reg + RESET_FREQ_MODE); | |
951 | reset = readb(ctrl->hpc_reg + RESET_FREQ_MODE); | |
952 | wake_up_interruptible(&ctrl->queue); | |
953 | } | |
954 | ||
955 | if (schedule_flag) { | |
fa007d8b CH |
956 | wake_up_process(cpqhp_event_thread); |
957 | dbg("Waking even thread"); | |
1da177e4 LT |
958 | } |
959 | return IRQ_HANDLED; | |
960 | } | |
961 | ||
962 | ||
963 | /** | |
964 | * cpqhp_slot_create - Creates a node and adds it to the proper bus. | |
26e6c66e | 965 | * @busnumber: bus where new node is to be located |
1da177e4 | 966 | * |
26e6c66e | 967 | * Returns pointer to the new node or %NULL if unsuccessful. |
1da177e4 LT |
968 | */ |
969 | struct pci_func *cpqhp_slot_create(u8 busnumber) | |
970 | { | |
971 | struct pci_func *new_slot; | |
972 | struct pci_func *next; | |
973 | ||
73a985a1 | 974 | new_slot = kzalloc(sizeof(*new_slot), GFP_KERNEL); |
1d3ecf13 | 975 | if (new_slot == NULL) |
1da177e4 | 976 | return new_slot; |
1da177e4 | 977 | |
1da177e4 LT |
978 | new_slot->next = NULL; |
979 | new_slot->configured = 1; | |
980 | ||
981 | if (cpqhp_slot_list[busnumber] == NULL) { | |
982 | cpqhp_slot_list[busnumber] = new_slot; | |
983 | } else { | |
984 | next = cpqhp_slot_list[busnumber]; | |
985 | while (next->next != NULL) | |
986 | next = next->next; | |
987 | next->next = new_slot; | |
988 | } | |
989 | return new_slot; | |
990 | } | |
991 | ||
992 | ||
993 | /** | |
994 | * slot_remove - Removes a node from the linked list of slots. | |
995 | * @old_slot: slot to remove | |
996 | * | |
26e6c66e | 997 | * Returns %0 if successful, !0 otherwise. |
1da177e4 LT |
998 | */ |
999 | static int slot_remove(struct pci_func * old_slot) | |
1000 | { | |
1001 | struct pci_func *next; | |
1002 | ||
1003 | if (old_slot == NULL) | |
1004 | return 1; | |
1005 | ||
1006 | next = cpqhp_slot_list[old_slot->bus]; | |
1d3ecf13 | 1007 | if (next == NULL) |
1da177e4 | 1008 | return 1; |
1da177e4 LT |
1009 | |
1010 | if (next == old_slot) { | |
1011 | cpqhp_slot_list[old_slot->bus] = old_slot->next; | |
1012 | cpqhp_destroy_board_resources(old_slot); | |
1013 | kfree(old_slot); | |
1014 | return 0; | |
1015 | } | |
1016 | ||
1d3ecf13 | 1017 | while ((next->next != old_slot) && (next->next != NULL)) |
1da177e4 | 1018 | next = next->next; |
1da177e4 LT |
1019 | |
1020 | if (next->next == old_slot) { | |
1021 | next->next = old_slot->next; | |
1022 | cpqhp_destroy_board_resources(old_slot); | |
1023 | kfree(old_slot); | |
1024 | return 0; | |
1025 | } else | |
1026 | return 2; | |
1027 | } | |
1028 | ||
1029 | ||
1030 | /** | |
1031 | * bridge_slot_remove - Removes a node from the linked list of slots. | |
1032 | * @bridge: bridge to remove | |
1033 | * | |
26e6c66e | 1034 | * Returns %0 if successful, !0 otherwise. |
1da177e4 LT |
1035 | */ |
1036 | static int bridge_slot_remove(struct pci_func *bridge) | |
1037 | { | |
1038 | u8 subordinateBus, secondaryBus; | |
1039 | u8 tempBus; | |
1040 | struct pci_func *next; | |
1041 | ||
1042 | secondaryBus = (bridge->config_space[0x06] >> 8) & 0xFF; | |
1043 | subordinateBus = (bridge->config_space[0x06] >> 16) & 0xFF; | |
1044 | ||
1045 | for (tempBus = secondaryBus; tempBus <= subordinateBus; tempBus++) { | |
1046 | next = cpqhp_slot_list[tempBus]; | |
1047 | ||
1d3ecf13 | 1048 | while (!slot_remove(next)) |
1da177e4 | 1049 | next = cpqhp_slot_list[tempBus]; |
1da177e4 LT |
1050 | } |
1051 | ||
1052 | next = cpqhp_slot_list[bridge->bus]; | |
1053 | ||
1054 | if (next == NULL) | |
1055 | return 1; | |
1056 | ||
1057 | if (next == bridge) { | |
1058 | cpqhp_slot_list[bridge->bus] = bridge->next; | |
1059 | goto out; | |
1060 | } | |
1061 | ||
1062 | while ((next->next != bridge) && (next->next != NULL)) | |
1063 | next = next->next; | |
1064 | ||
1065 | if (next->next != bridge) | |
1066 | return 2; | |
1067 | next->next = bridge->next; | |
1068 | out: | |
1069 | kfree(bridge); | |
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | ||
1074 | /** | |
1075 | * cpqhp_slot_find - Looks for a node by bus, and device, multiple functions accessed | |
1076 | * @bus: bus to find | |
1077 | * @device: device to find | |
26e6c66e | 1078 | * @index: is %0 for first function found, %1 for the second... |
1da177e4 LT |
1079 | * |
1080 | * Returns pointer to the node if successful, %NULL otherwise. | |
1081 | */ | |
1082 | struct pci_func *cpqhp_slot_find(u8 bus, u8 device, u8 index) | |
1083 | { | |
1084 | int found = -1; | |
1085 | struct pci_func *func; | |
1086 | ||
1087 | func = cpqhp_slot_list[bus]; | |
1088 | ||
1089 | if ((func == NULL) || ((func->device == device) && (index == 0))) | |
1090 | return func; | |
1091 | ||
1092 | if (func->device == device) | |
1093 | found++; | |
1094 | ||
1095 | while (func->next != NULL) { | |
1096 | func = func->next; | |
1097 | ||
1098 | if (func->device == device) | |
1099 | found++; | |
1100 | ||
1101 | if (found == index) | |
1102 | return func; | |
1103 | } | |
1104 | ||
1105 | return NULL; | |
1106 | } | |
1107 | ||
1108 | ||
1109 | /* DJZ: I don't think is_bridge will work as is. | |
1110 | * FIXME */ | |
1111 | static int is_bridge(struct pci_func * func) | |
1112 | { | |
1113 | /* Check the header type */ | |
1114 | if (((func->config_space[0x03] >> 16) & 0xFF) == 0x01) | |
1115 | return 1; | |
1116 | else | |
1117 | return 0; | |
1118 | } | |
1119 | ||
1120 | ||
1121 | /** | |
26e6c66e | 1122 | * set_controller_speed - set the frequency and/or mode of a specific controller segment. |
1da177e4 LT |
1123 | * @ctrl: controller to change frequency/mode for. |
1124 | * @adapter_speed: the speed of the adapter we want to match. | |
1125 | * @hp_slot: the slot number where the adapter is installed. | |
1126 | * | |
26e6c66e | 1127 | * Returns %0 if we successfully change frequency and/or mode to match the |
1da177e4 | 1128 | * adapter speed. |
1da177e4 LT |
1129 | */ |
1130 | static u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_slot) | |
1131 | { | |
1132 | struct slot *slot; | |
1133 | u8 reg; | |
1134 | u8 slot_power = readb(ctrl->hpc_reg + SLOT_POWER); | |
1135 | u16 reg16; | |
1136 | u32 leds = readl(ctrl->hpc_reg + LED_CONTROL); | |
861fefbf | 1137 | |
1da177e4 LT |
1138 | if (ctrl->speed == adapter_speed) |
1139 | return 0; | |
861fefbf | 1140 | |
1da177e4 | 1141 | /* We don't allow freq/mode changes if we find another adapter running |
427438c6 AC |
1142 | * in another slot on this controller |
1143 | */ | |
1da177e4 | 1144 | for(slot = ctrl->slot; slot; slot = slot->next) { |
861fefbf | 1145 | if (slot->device == (hp_slot + ctrl->slot_device_offset)) |
1da177e4 | 1146 | continue; |
05a34f51 | 1147 | if (!slot->hotplug_slot || !slot->hotplug_slot->info) |
1da177e4 | 1148 | continue; |
861fefbf | 1149 | if (slot->hotplug_slot->info->adapter_status == 0) |
1da177e4 LT |
1150 | continue; |
1151 | /* If another adapter is running on the same segment but at a | |
1152 | * lower speed/mode, we allow the new adapter to function at | |
427438c6 AC |
1153 | * this rate if supported |
1154 | */ | |
861fefbf | 1155 | if (ctrl->speed < adapter_speed) |
1da177e4 LT |
1156 | return 0; |
1157 | ||
1158 | return 1; | |
1159 | } | |
861fefbf | 1160 | |
1da177e4 | 1161 | /* If the controller doesn't support freq/mode changes and the |
427438c6 AC |
1162 | * controller is running at a higher mode, we bail |
1163 | */ | |
1da177e4 LT |
1164 | if ((ctrl->speed > adapter_speed) && (!ctrl->pcix_speed_capability)) |
1165 | return 1; | |
861fefbf | 1166 | |
1da177e4 LT |
1167 | /* But we allow the adapter to run at a lower rate if possible */ |
1168 | if ((ctrl->speed < adapter_speed) && (!ctrl->pcix_speed_capability)) | |
1169 | return 0; | |
1170 | ||
1171 | /* We try to set the max speed supported by both the adapter and | |
427438c6 AC |
1172 | * controller |
1173 | */ | |
1da177e4 LT |
1174 | if (ctrl->speed_capability < adapter_speed) { |
1175 | if (ctrl->speed == ctrl->speed_capability) | |
1176 | return 0; | |
1177 | adapter_speed = ctrl->speed_capability; | |
1178 | } | |
1179 | ||
1180 | writel(0x0L, ctrl->hpc_reg + LED_CONTROL); | |
1181 | writeb(0x00, ctrl->hpc_reg + SLOT_ENABLE); | |
861fefbf AC |
1182 | |
1183 | set_SOGO(ctrl); | |
1da177e4 | 1184 | wait_for_ctrl_irq(ctrl); |
861fefbf | 1185 | |
1da177e4 LT |
1186 | if (adapter_speed != PCI_SPEED_133MHz_PCIX) |
1187 | reg = 0xF5; | |
1188 | else | |
861fefbf | 1189 | reg = 0xF4; |
1da177e4 | 1190 | pci_write_config_byte(ctrl->pci_dev, 0x41, reg); |
861fefbf | 1191 | |
1da177e4 LT |
1192 | reg16 = readw(ctrl->hpc_reg + NEXT_CURR_FREQ); |
1193 | reg16 &= ~0x000F; | |
1194 | switch(adapter_speed) { | |
861fefbf | 1195 | case(PCI_SPEED_133MHz_PCIX): |
1da177e4 | 1196 | reg = 0x75; |
861fefbf | 1197 | reg16 |= 0xB; |
1da177e4 LT |
1198 | break; |
1199 | case(PCI_SPEED_100MHz_PCIX): | |
1200 | reg = 0x74; | |
1201 | reg16 |= 0xA; | |
1202 | break; | |
1203 | case(PCI_SPEED_66MHz_PCIX): | |
1204 | reg = 0x73; | |
1205 | reg16 |= 0x9; | |
1206 | break; | |
1207 | case(PCI_SPEED_66MHz): | |
1208 | reg = 0x73; | |
1209 | reg16 |= 0x1; | |
1210 | break; | |
1211 | default: /* 33MHz PCI 2.2 */ | |
1212 | reg = 0x71; | |
1213 | break; | |
861fefbf | 1214 | |
1da177e4 LT |
1215 | } |
1216 | reg16 |= 0xB << 12; | |
1217 | writew(reg16, ctrl->hpc_reg + NEXT_CURR_FREQ); | |
861fefbf AC |
1218 | |
1219 | mdelay(5); | |
1220 | ||
1da177e4 LT |
1221 | /* Reenable interrupts */ |
1222 | writel(0, ctrl->hpc_reg + INT_MASK); | |
1223 | ||
861fefbf AC |
1224 | pci_write_config_byte(ctrl->pci_dev, 0x41, reg); |
1225 | ||
1da177e4 LT |
1226 | /* Restart state machine */ |
1227 | reg = ~0xF; | |
1228 | pci_read_config_byte(ctrl->pci_dev, 0x43, ®); | |
1229 | pci_write_config_byte(ctrl->pci_dev, 0x43, reg); | |
861fefbf | 1230 | |
1da177e4 LT |
1231 | /* Only if mode change...*/ |
1232 | if (((ctrl->speed == PCI_SPEED_66MHz) && (adapter_speed == PCI_SPEED_66MHz_PCIX)) || | |
1233 | ((ctrl->speed == PCI_SPEED_66MHz_PCIX) && (adapter_speed == PCI_SPEED_66MHz))) | |
1234 | set_SOGO(ctrl); | |
861fefbf | 1235 | |
1da177e4 LT |
1236 | wait_for_ctrl_irq(ctrl); |
1237 | mdelay(1100); | |
861fefbf | 1238 | |
1da177e4 LT |
1239 | /* Restore LED/Slot state */ |
1240 | writel(leds, ctrl->hpc_reg + LED_CONTROL); | |
1241 | writeb(slot_power, ctrl->hpc_reg + SLOT_ENABLE); | |
861fefbf | 1242 | |
1da177e4 LT |
1243 | set_SOGO(ctrl); |
1244 | wait_for_ctrl_irq(ctrl); | |
1245 | ||
1246 | ctrl->speed = adapter_speed; | |
1247 | slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); | |
1248 | ||
861fefbf | 1249 | info("Successfully changed frequency/mode for adapter in slot %d\n", |
1da177e4 LT |
1250 | slot->number); |
1251 | return 0; | |
1252 | } | |
1253 | ||
861fefbf | 1254 | /* the following routines constitute the bulk of the |
427438c6 | 1255 | * hotplug controller logic |
1da177e4 LT |
1256 | */ |
1257 | ||
1258 | ||
1259 | /** | |
1260 | * board_replaced - Called after a board has been replaced in the system. | |
26e6c66e RD |
1261 | * @func: PCI device/function information |
1262 | * @ctrl: hotplug controller | |
1da177e4 | 1263 | * |
26e6c66e RD |
1264 | * This is only used if we don't have resources for hot add. |
1265 | * Turns power on for the board. | |
1266 | * Checks to see if board is the same. | |
1267 | * If board is same, reconfigures it. | |
1da177e4 | 1268 | * If board isn't same, turns it back off. |
1da177e4 LT |
1269 | */ |
1270 | static u32 board_replaced(struct pci_func *func, struct controller *ctrl) | |
1271 | { | |
1272 | u8 hp_slot; | |
1273 | u8 temp_byte; | |
1274 | u8 adapter_speed; | |
1da177e4 | 1275 | u32 rc = 0; |
1da177e4 LT |
1276 | |
1277 | hp_slot = func->device - ctrl->slot_device_offset; | |
1278 | ||
1d3ecf13 AC |
1279 | /* |
1280 | * The switch is open. | |
1281 | */ | |
1282 | if (readl(ctrl->hpc_reg + INT_INPUT_CLEAR) & (0x01L << hp_slot)) | |
1da177e4 | 1283 | rc = INTERLOCK_OPEN; |
1d3ecf13 AC |
1284 | /* |
1285 | * The board is already on | |
1286 | */ | |
1287 | else if (is_slot_enabled (ctrl, hp_slot)) | |
1da177e4 | 1288 | rc = CARD_FUNCTIONING; |
1d3ecf13 | 1289 | else { |
6aa4cdd0 | 1290 | mutex_lock(&ctrl->crit_sect); |
1da177e4 LT |
1291 | |
1292 | /* turn on board without attaching to the bus */ | |
1293 | enable_slot_power (ctrl, hp_slot); | |
1294 | ||
1295 | set_SOGO(ctrl); | |
1296 | ||
1297 | /* Wait for SOBS to be unset */ | |
1298 | wait_for_ctrl_irq (ctrl); | |
1299 | ||
1300 | /* Change bits in slot power register to force another shift out | |
1301 | * NOTE: this is to work around the timer bug */ | |
1302 | temp_byte = readb(ctrl->hpc_reg + SLOT_POWER); | |
1303 | writeb(0x00, ctrl->hpc_reg + SLOT_POWER); | |
1304 | writeb(temp_byte, ctrl->hpc_reg + SLOT_POWER); | |
1305 | ||
1306 | set_SOGO(ctrl); | |
1307 | ||
1308 | /* Wait for SOBS to be unset */ | |
1309 | wait_for_ctrl_irq (ctrl); | |
861fefbf | 1310 | |
1da177e4 LT |
1311 | adapter_speed = get_adapter_speed(ctrl, hp_slot); |
1312 | if (ctrl->speed != adapter_speed) | |
1313 | if (set_controller_speed(ctrl, adapter_speed, hp_slot)) | |
1314 | rc = WRONG_BUS_FREQUENCY; | |
1315 | ||
1316 | /* turn off board without attaching to the bus */ | |
1317 | disable_slot_power (ctrl, hp_slot); | |
1318 | ||
1319 | set_SOGO(ctrl); | |
1320 | ||
1321 | /* Wait for SOBS to be unset */ | |
1322 | wait_for_ctrl_irq (ctrl); | |
1323 | ||
6aa4cdd0 | 1324 | mutex_unlock(&ctrl->crit_sect); |
1da177e4 LT |
1325 | |
1326 | if (rc) | |
1327 | return rc; | |
1328 | ||
6aa4cdd0 | 1329 | mutex_lock(&ctrl->crit_sect); |
1da177e4 LT |
1330 | |
1331 | slot_enable (ctrl, hp_slot); | |
1332 | green_LED_blink (ctrl, hp_slot); | |
1333 | ||
1334 | amber_LED_off (ctrl, hp_slot); | |
1335 | ||
1336 | set_SOGO(ctrl); | |
1337 | ||
1338 | /* Wait for SOBS to be unset */ | |
1339 | wait_for_ctrl_irq (ctrl); | |
1340 | ||
6aa4cdd0 | 1341 | mutex_unlock(&ctrl->crit_sect); |
1da177e4 LT |
1342 | |
1343 | /* Wait for ~1 second because of hot plug spec */ | |
1344 | long_delay(1*HZ); | |
1345 | ||
1346 | /* Check for a power fault */ | |
1347 | if (func->status == 0xFF) { | |
1348 | /* power fault occurred, but it was benign */ | |
1349 | rc = POWER_FAILURE; | |
1350 | func->status = 0; | |
1351 | } else | |
1352 | rc = cpqhp_valid_replace(ctrl, func); | |
1353 | ||
1354 | if (!rc) { | |
1355 | /* It must be the same board */ | |
1356 | ||
1357 | rc = cpqhp_configure_board(ctrl, func); | |
1358 | ||
1305e918 AB |
1359 | /* If configuration fails, turn it off |
1360 | * Get slot won't work for devices behind | |
1361 | * bridges, but in this case it will always be | |
1362 | * called for the "base" bus/dev/func of an | |
427438c6 AC |
1363 | * adapter. |
1364 | */ | |
1da177e4 | 1365 | |
6aa4cdd0 | 1366 | mutex_lock(&ctrl->crit_sect); |
1da177e4 | 1367 | |
1305e918 AB |
1368 | amber_LED_on (ctrl, hp_slot); |
1369 | green_LED_off (ctrl, hp_slot); | |
1370 | slot_disable (ctrl, hp_slot); | |
1da177e4 LT |
1371 | |
1372 | set_SOGO(ctrl); | |
1373 | ||
1374 | /* Wait for SOBS to be unset */ | |
1375 | wait_for_ctrl_irq (ctrl); | |
1376 | ||
6aa4cdd0 | 1377 | mutex_unlock(&ctrl->crit_sect); |
1305e918 AB |
1378 | |
1379 | if (rc) | |
1380 | return rc; | |
1381 | else | |
1382 | return 1; | |
1383 | ||
1da177e4 LT |
1384 | } else { |
1385 | /* Something is wrong | |
1386 | ||
1387 | * Get slot won't work for devices behind bridges, but | |
1388 | * in this case it will always be called for the "base" | |
427438c6 AC |
1389 | * bus/dev/func of an adapter. |
1390 | */ | |
1da177e4 | 1391 | |
6aa4cdd0 | 1392 | mutex_lock(&ctrl->crit_sect); |
1da177e4 LT |
1393 | |
1394 | amber_LED_on (ctrl, hp_slot); | |
1395 | green_LED_off (ctrl, hp_slot); | |
1396 | slot_disable (ctrl, hp_slot); | |
1397 | ||
1398 | set_SOGO(ctrl); | |
1399 | ||
1400 | /* Wait for SOBS to be unset */ | |
1401 | wait_for_ctrl_irq (ctrl); | |
1402 | ||
6aa4cdd0 | 1403 | mutex_unlock(&ctrl->crit_sect); |
1da177e4 LT |
1404 | } |
1405 | ||
1406 | } | |
1407 | return rc; | |
1408 | ||
1409 | } | |
1410 | ||
1411 | ||
1412 | /** | |
1413 | * board_added - Called after a board has been added to the system. | |
26e6c66e RD |
1414 | * @func: PCI device/function info |
1415 | * @ctrl: hotplug controller | |
1da177e4 | 1416 | * |
26e6c66e RD |
1417 | * Turns power on for the board. |
1418 | * Configures board. | |
1da177e4 LT |
1419 | */ |
1420 | static u32 board_added(struct pci_func *func, struct controller *ctrl) | |
1421 | { | |
1422 | u8 hp_slot; | |
1423 | u8 temp_byte; | |
1424 | u8 adapter_speed; | |
1425 | int index; | |
1426 | u32 temp_register = 0xFFFFFFFF; | |
1427 | u32 rc = 0; | |
1428 | struct pci_func *new_slot = NULL; | |
1429 | struct slot *p_slot; | |
1430 | struct resource_lists res_lists; | |
1431 | ||
1432 | hp_slot = func->device - ctrl->slot_device_offset; | |
1433 | dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n", | |
66bef8c0 | 1434 | __func__, func->device, ctrl->slot_device_offset, hp_slot); |
1da177e4 | 1435 | |
6aa4cdd0 | 1436 | mutex_lock(&ctrl->crit_sect); |
1da177e4 LT |
1437 | |
1438 | /* turn on board without attaching to the bus */ | |
1439 | enable_slot_power(ctrl, hp_slot); | |
1440 | ||
1441 | set_SOGO(ctrl); | |
1442 | ||
1443 | /* Wait for SOBS to be unset */ | |
1444 | wait_for_ctrl_irq (ctrl); | |
1445 | ||
1446 | /* Change bits in slot power register to force another shift out | |
427438c6 AC |
1447 | * NOTE: this is to work around the timer bug |
1448 | */ | |
1da177e4 LT |
1449 | temp_byte = readb(ctrl->hpc_reg + SLOT_POWER); |
1450 | writeb(0x00, ctrl->hpc_reg + SLOT_POWER); | |
1451 | writeb(temp_byte, ctrl->hpc_reg + SLOT_POWER); | |
1452 | ||
1453 | set_SOGO(ctrl); | |
1454 | ||
1455 | /* Wait for SOBS to be unset */ | |
1456 | wait_for_ctrl_irq (ctrl); | |
861fefbf | 1457 | |
1da177e4 LT |
1458 | adapter_speed = get_adapter_speed(ctrl, hp_slot); |
1459 | if (ctrl->speed != adapter_speed) | |
1460 | if (set_controller_speed(ctrl, adapter_speed, hp_slot)) | |
1461 | rc = WRONG_BUS_FREQUENCY; | |
861fefbf | 1462 | |
1da177e4 LT |
1463 | /* turn off board without attaching to the bus */ |
1464 | disable_slot_power (ctrl, hp_slot); | |
1465 | ||
1466 | set_SOGO(ctrl); | |
1467 | ||
1468 | /* Wait for SOBS to be unset */ | |
1469 | wait_for_ctrl_irq(ctrl); | |
1470 | ||
6aa4cdd0 | 1471 | mutex_unlock(&ctrl->crit_sect); |
1da177e4 LT |
1472 | |
1473 | if (rc) | |
1474 | return rc; | |
861fefbf | 1475 | |
1da177e4 LT |
1476 | p_slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
1477 | ||
1478 | /* turn on board and blink green LED */ | |
1479 | ||
66bef8c0 | 1480 | dbg("%s: before down\n", __func__); |
6aa4cdd0 | 1481 | mutex_lock(&ctrl->crit_sect); |
66bef8c0 | 1482 | dbg("%s: after down\n", __func__); |
1da177e4 | 1483 | |
66bef8c0 | 1484 | dbg("%s: before slot_enable\n", __func__); |
1da177e4 LT |
1485 | slot_enable (ctrl, hp_slot); |
1486 | ||
66bef8c0 | 1487 | dbg("%s: before green_LED_blink\n", __func__); |
1da177e4 LT |
1488 | green_LED_blink (ctrl, hp_slot); |
1489 | ||
66bef8c0 | 1490 | dbg("%s: before amber_LED_blink\n", __func__); |
1da177e4 LT |
1491 | amber_LED_off (ctrl, hp_slot); |
1492 | ||
66bef8c0 | 1493 | dbg("%s: before set_SOGO\n", __func__); |
1da177e4 LT |
1494 | set_SOGO(ctrl); |
1495 | ||
1496 | /* Wait for SOBS to be unset */ | |
66bef8c0 | 1497 | dbg("%s: before wait_for_ctrl_irq\n", __func__); |
1da177e4 | 1498 | wait_for_ctrl_irq (ctrl); |
66bef8c0 | 1499 | dbg("%s: after wait_for_ctrl_irq\n", __func__); |
1da177e4 | 1500 | |
66bef8c0 | 1501 | dbg("%s: before up\n", __func__); |
6aa4cdd0 | 1502 | mutex_unlock(&ctrl->crit_sect); |
66bef8c0 | 1503 | dbg("%s: after up\n", __func__); |
1da177e4 LT |
1504 | |
1505 | /* Wait for ~1 second because of hot plug spec */ | |
66bef8c0 | 1506 | dbg("%s: before long_delay\n", __func__); |
1da177e4 | 1507 | long_delay(1*HZ); |
66bef8c0 | 1508 | dbg("%s: after long_delay\n", __func__); |
1da177e4 | 1509 | |
66bef8c0 | 1510 | dbg("%s: func status = %x\n", __func__, func->status); |
1da177e4 LT |
1511 | /* Check for a power fault */ |
1512 | if (func->status == 0xFF) { | |
1513 | /* power fault occurred, but it was benign */ | |
1514 | temp_register = 0xFFFFFFFF; | |
66bef8c0 | 1515 | dbg("%s: temp register set to %x by power fault\n", __func__, temp_register); |
1da177e4 LT |
1516 | rc = POWER_FAILURE; |
1517 | func->status = 0; | |
1518 | } else { | |
1519 | /* Get vendor/device ID u32 */ | |
1520 | ctrl->pci_bus->number = func->bus; | |
1521 | rc = pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(func->device, func->function), PCI_VENDOR_ID, &temp_register); | |
66bef8c0 HH |
1522 | dbg("%s: pci_read_config_dword returns %d\n", __func__, rc); |
1523 | dbg("%s: temp_register is %x\n", __func__, temp_register); | |
1da177e4 LT |
1524 | |
1525 | if (rc != 0) { | |
1526 | /* Something's wrong here */ | |
1527 | temp_register = 0xFFFFFFFF; | |
66bef8c0 | 1528 | dbg("%s: temp register set to %x by error\n", __func__, temp_register); |
1da177e4 LT |
1529 | } |
1530 | /* Preset return code. It will be changed later if things go okay. */ | |
1531 | rc = NO_ADAPTER_PRESENT; | |
1532 | } | |
1533 | ||
1534 | /* All F's is an empty slot or an invalid board */ | |
1d3ecf13 | 1535 | if (temp_register != 0xFFFFFFFF) { |
1da177e4 LT |
1536 | res_lists.io_head = ctrl->io_head; |
1537 | res_lists.mem_head = ctrl->mem_head; | |
1538 | res_lists.p_mem_head = ctrl->p_mem_head; | |
1539 | res_lists.bus_head = ctrl->bus_head; | |
1540 | res_lists.irqs = NULL; | |
1541 | ||
1542 | rc = configure_new_device(ctrl, func, 0, &res_lists); | |
1543 | ||
66bef8c0 | 1544 | dbg("%s: back from configure_new_device\n", __func__); |
1da177e4 LT |
1545 | ctrl->io_head = res_lists.io_head; |
1546 | ctrl->mem_head = res_lists.mem_head; | |
1547 | ctrl->p_mem_head = res_lists.p_mem_head; | |
1548 | ctrl->bus_head = res_lists.bus_head; | |
1549 | ||
1550 | cpqhp_resource_sort_and_combine(&(ctrl->mem_head)); | |
1551 | cpqhp_resource_sort_and_combine(&(ctrl->p_mem_head)); | |
1552 | cpqhp_resource_sort_and_combine(&(ctrl->io_head)); | |
1553 | cpqhp_resource_sort_and_combine(&(ctrl->bus_head)); | |
1554 | ||
1555 | if (rc) { | |
6aa4cdd0 | 1556 | mutex_lock(&ctrl->crit_sect); |
1da177e4 LT |
1557 | |
1558 | amber_LED_on (ctrl, hp_slot); | |
1559 | green_LED_off (ctrl, hp_slot); | |
1560 | slot_disable (ctrl, hp_slot); | |
1561 | ||
1562 | set_SOGO(ctrl); | |
1563 | ||
1564 | /* Wait for SOBS to be unset */ | |
1565 | wait_for_ctrl_irq (ctrl); | |
1566 | ||
6aa4cdd0 | 1567 | mutex_unlock(&ctrl->crit_sect); |
1da177e4 LT |
1568 | return rc; |
1569 | } else { | |
1570 | cpqhp_save_slot_config(ctrl, func); | |
1571 | } | |
1572 | ||
1573 | ||
1574 | func->status = 0; | |
1575 | func->switch_save = 0x10; | |
1576 | func->is_a_board = 0x01; | |
1577 | ||
1578 | /* next, we will instantiate the linux pci_dev structures (with | |
1579 | * appropriate driver notification, if already present) */ | |
66bef8c0 | 1580 | dbg("%s: configure linux pci_dev structure\n", __func__); |
1da177e4 LT |
1581 | index = 0; |
1582 | do { | |
1583 | new_slot = cpqhp_slot_find(ctrl->bus, func->device, index++); | |
1d3ecf13 | 1584 | if (new_slot && !new_slot->pci_dev) |
1da177e4 | 1585 | cpqhp_configure_device(ctrl, new_slot); |
1da177e4 LT |
1586 | } while (new_slot); |
1587 | ||
6aa4cdd0 | 1588 | mutex_lock(&ctrl->crit_sect); |
1da177e4 LT |
1589 | |
1590 | green_LED_on (ctrl, hp_slot); | |
1591 | ||
1592 | set_SOGO(ctrl); | |
1593 | ||
1594 | /* Wait for SOBS to be unset */ | |
1595 | wait_for_ctrl_irq (ctrl); | |
1596 | ||
6aa4cdd0 | 1597 | mutex_unlock(&ctrl->crit_sect); |
1da177e4 | 1598 | } else { |
6aa4cdd0 | 1599 | mutex_lock(&ctrl->crit_sect); |
1da177e4 LT |
1600 | |
1601 | amber_LED_on (ctrl, hp_slot); | |
1602 | green_LED_off (ctrl, hp_slot); | |
1603 | slot_disable (ctrl, hp_slot); | |
1604 | ||
1605 | set_SOGO(ctrl); | |
1606 | ||
1607 | /* Wait for SOBS to be unset */ | |
1608 | wait_for_ctrl_irq (ctrl); | |
1609 | ||
6aa4cdd0 | 1610 | mutex_unlock(&ctrl->crit_sect); |
1da177e4 LT |
1611 | |
1612 | return rc; | |
1613 | } | |
1614 | return 0; | |
1615 | } | |
1616 | ||
1617 | ||
1618 | /** | |
26e6c66e RD |
1619 | * remove_board - Turns off slot and LEDs |
1620 | * @func: PCI device/function info | |
1621 | * @replace_flag: whether replacing or adding a new device | |
1622 | * @ctrl: target controller | |
1da177e4 LT |
1623 | */ |
1624 | static u32 remove_board(struct pci_func * func, u32 replace_flag, struct controller * ctrl) | |
1625 | { | |
1626 | int index; | |
1627 | u8 skip = 0; | |
1628 | u8 device; | |
1629 | u8 hp_slot; | |
1630 | u8 temp_byte; | |
1631 | u32 rc; | |
1632 | struct resource_lists res_lists; | |
1633 | struct pci_func *temp_func; | |
1634 | ||
1635 | if (cpqhp_unconfigure_device(func)) | |
1636 | return 1; | |
1637 | ||
1638 | device = func->device; | |
1639 | ||
1640 | hp_slot = func->device - ctrl->slot_device_offset; | |
66bef8c0 | 1641 | dbg("In %s, hp_slot = %d\n", __func__, hp_slot); |
1da177e4 LT |
1642 | |
1643 | /* When we get here, it is safe to change base address registers. | |
1644 | * We will attempt to save the base address register lengths */ | |
1645 | if (replace_flag || !ctrl->add_support) | |
1646 | rc = cpqhp_save_base_addr_length(ctrl, func); | |
1647 | else if (!func->bus_head && !func->mem_head && | |
1648 | !func->p_mem_head && !func->io_head) { | |
1649 | /* Here we check to see if we've saved any of the board's | |
1650 | * resources already. If so, we'll skip the attempt to | |
1651 | * determine what's being used. */ | |
1652 | index = 0; | |
1653 | temp_func = cpqhp_slot_find(func->bus, func->device, index++); | |
1654 | while (temp_func) { | |
1655 | if (temp_func->bus_head || temp_func->mem_head | |
1656 | || temp_func->p_mem_head || temp_func->io_head) { | |
1657 | skip = 1; | |
1658 | break; | |
1659 | } | |
1660 | temp_func = cpqhp_slot_find(temp_func->bus, temp_func->device, index++); | |
1661 | } | |
1662 | ||
1663 | if (!skip) | |
1664 | rc = cpqhp_save_used_resources(ctrl, func); | |
1665 | } | |
1666 | /* Change status to shutdown */ | |
1667 | if (func->is_a_board) | |
1668 | func->status = 0x01; | |
1669 | func->configured = 0; | |
1670 | ||
6aa4cdd0 | 1671 | mutex_lock(&ctrl->crit_sect); |
1da177e4 LT |
1672 | |
1673 | green_LED_off (ctrl, hp_slot); | |
1674 | slot_disable (ctrl, hp_slot); | |
1675 | ||
1676 | set_SOGO(ctrl); | |
1677 | ||
1678 | /* turn off SERR for slot */ | |
1679 | temp_byte = readb(ctrl->hpc_reg + SLOT_SERR); | |
1680 | temp_byte &= ~(0x01 << hp_slot); | |
1681 | writeb(temp_byte, ctrl->hpc_reg + SLOT_SERR); | |
1682 | ||
1683 | /* Wait for SOBS to be unset */ | |
1684 | wait_for_ctrl_irq (ctrl); | |
1685 | ||
6aa4cdd0 | 1686 | mutex_unlock(&ctrl->crit_sect); |
1da177e4 LT |
1687 | |
1688 | if (!replace_flag && ctrl->add_support) { | |
1689 | while (func) { | |
1690 | res_lists.io_head = ctrl->io_head; | |
1691 | res_lists.mem_head = ctrl->mem_head; | |
1692 | res_lists.p_mem_head = ctrl->p_mem_head; | |
1693 | res_lists.bus_head = ctrl->bus_head; | |
1694 | ||
1695 | cpqhp_return_board_resources(func, &res_lists); | |
1696 | ||
1697 | ctrl->io_head = res_lists.io_head; | |
1698 | ctrl->mem_head = res_lists.mem_head; | |
1699 | ctrl->p_mem_head = res_lists.p_mem_head; | |
1700 | ctrl->bus_head = res_lists.bus_head; | |
1701 | ||
1702 | cpqhp_resource_sort_and_combine(&(ctrl->mem_head)); | |
1703 | cpqhp_resource_sort_and_combine(&(ctrl->p_mem_head)); | |
1704 | cpqhp_resource_sort_and_combine(&(ctrl->io_head)); | |
1705 | cpqhp_resource_sort_and_combine(&(ctrl->bus_head)); | |
1706 | ||
1707 | if (is_bridge(func)) { | |
1708 | bridge_slot_remove(func); | |
1709 | } else | |
1710 | slot_remove(func); | |
1711 | ||
1712 | func = cpqhp_slot_find(ctrl->bus, device, 0); | |
1713 | } | |
1714 | ||
1715 | /* Setup slot structure with entry for empty slot */ | |
1716 | func = cpqhp_slot_create(ctrl->bus); | |
1717 | ||
1718 | if (func == NULL) | |
1719 | return 1; | |
1720 | ||
1721 | func->bus = ctrl->bus; | |
1722 | func->device = device; | |
1723 | func->function = 0; | |
1724 | func->configured = 0; | |
1725 | func->switch_save = 0x10; | |
1726 | func->is_a_board = 0; | |
1727 | func->p_task_event = NULL; | |
1728 | } | |
1729 | ||
1730 | return 0; | |
1731 | } | |
1732 | ||
1733 | static void pushbutton_helper_thread(unsigned long data) | |
1734 | { | |
1735 | pushbutton_pending = data; | |
fa007d8b | 1736 | wake_up_process(cpqhp_event_thread); |
1da177e4 LT |
1737 | } |
1738 | ||
1739 | ||
1740 | /* this is the main worker thread */ | |
1741 | static int event_thread(void* data) | |
1742 | { | |
1743 | struct controller *ctrl; | |
60ac8f20 | 1744 | |
1da177e4 LT |
1745 | while (1) { |
1746 | dbg("!!!!event_thread sleeping\n"); | |
fa007d8b CH |
1747 | set_current_state(TASK_INTERRUPTIBLE); |
1748 | schedule(); | |
1749 | ||
1750 | if (kthread_should_stop()) | |
1751 | break; | |
1da177e4 LT |
1752 | /* Do stuff here */ |
1753 | if (pushbutton_pending) | |
1754 | cpqhp_pushbutton_thread(pushbutton_pending); | |
1755 | else | |
1756 | for (ctrl = cpqhp_ctrl_list; ctrl; ctrl=ctrl->next) | |
1757 | interrupt_event_handler(ctrl); | |
1758 | } | |
1759 | dbg("event_thread signals exit\n"); | |
1da177e4 LT |
1760 | return 0; |
1761 | } | |
1762 | ||
1da177e4 LT |
1763 | int cpqhp_event_start_thread(void) |
1764 | { | |
fa007d8b CH |
1765 | cpqhp_event_thread = kthread_run(event_thread, NULL, "phpd_event"); |
1766 | if (IS_ERR(cpqhp_event_thread)) { | |
1da177e4 | 1767 | err ("Can't start up our event thread\n"); |
fa007d8b | 1768 | return PTR_ERR(cpqhp_event_thread); |
1da177e4 | 1769 | } |
fa007d8b | 1770 | |
1da177e4 LT |
1771 | return 0; |
1772 | } | |
1773 | ||
1774 | ||
1775 | void cpqhp_event_stop_thread(void) | |
1776 | { | |
fa007d8b | 1777 | kthread_stop(cpqhp_event_thread); |
1da177e4 LT |
1778 | } |
1779 | ||
1780 | ||
1781 | static int update_slot_info(struct controller *ctrl, struct slot *slot) | |
1782 | { | |
1783 | struct hotplug_slot_info *info; | |
1784 | int result; | |
1785 | ||
1786 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1787 | if (!info) | |
1788 | return -ENOMEM; | |
1789 | ||
1790 | info->power_status = get_slot_enabled(ctrl, slot); | |
1791 | info->attention_status = cpq_get_attention_status(ctrl, slot); | |
1792 | info->latch_status = cpq_get_latch_status(ctrl, slot); | |
1793 | info->adapter_status = get_presence_status(ctrl, slot); | |
1794 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); | |
1795 | kfree (info); | |
1796 | return result; | |
1797 | } | |
1798 | ||
1799 | static void interrupt_event_handler(struct controller *ctrl) | |
1800 | { | |
1801 | int loop = 0; | |
1802 | int change = 1; | |
1803 | struct pci_func *func; | |
1804 | u8 hp_slot; | |
1805 | struct slot *p_slot; | |
1806 | ||
1807 | while (change) { | |
1808 | change = 0; | |
1809 | ||
1810 | for (loop = 0; loop < 10; loop++) { | |
1811 | /* dbg("loop %d\n", loop); */ | |
1812 | if (ctrl->event_queue[loop].event_type != 0) { | |
1813 | hp_slot = ctrl->event_queue[loop].hp_slot; | |
1814 | ||
1815 | func = cpqhp_slot_find(ctrl->bus, (hp_slot + ctrl->slot_device_offset), 0); | |
1816 | if (!func) | |
1817 | return; | |
1818 | ||
1819 | p_slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); | |
1820 | if (!p_slot) | |
1821 | return; | |
1822 | ||
1823 | dbg("hp_slot %d, func %p, p_slot %p\n", | |
1824 | hp_slot, func, p_slot); | |
1825 | ||
1826 | if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) { | |
1827 | dbg("button pressed\n"); | |
1828 | } else if (ctrl->event_queue[loop].event_type == | |
1829 | INT_BUTTON_CANCEL) { | |
1830 | dbg("button cancel\n"); | |
1831 | del_timer(&p_slot->task_event); | |
1832 | ||
6aa4cdd0 | 1833 | mutex_lock(&ctrl->crit_sect); |
1da177e4 LT |
1834 | |
1835 | if (p_slot->state == BLINKINGOFF_STATE) { | |
1836 | /* slot is on */ | |
1837 | dbg("turn on green LED\n"); | |
1838 | green_LED_on (ctrl, hp_slot); | |
1839 | } else if (p_slot->state == BLINKINGON_STATE) { | |
1840 | /* slot is off */ | |
1841 | dbg("turn off green LED\n"); | |
1842 | green_LED_off (ctrl, hp_slot); | |
1843 | } | |
1844 | ||
1845 | info(msg_button_cancel, p_slot->number); | |
1846 | ||
1847 | p_slot->state = STATIC_STATE; | |
1848 | ||
1849 | amber_LED_off (ctrl, hp_slot); | |
1850 | ||
1851 | set_SOGO(ctrl); | |
1852 | ||
1853 | /* Wait for SOBS to be unset */ | |
1854 | wait_for_ctrl_irq (ctrl); | |
1855 | ||
6aa4cdd0 | 1856 | mutex_unlock(&ctrl->crit_sect); |
1da177e4 LT |
1857 | } |
1858 | /*** button Released (No action on press...) */ | |
1859 | else if (ctrl->event_queue[loop].event_type == INT_BUTTON_RELEASE) { | |
1860 | dbg("button release\n"); | |
1861 | ||
1862 | if (is_slot_enabled (ctrl, hp_slot)) { | |
1863 | dbg("slot is on\n"); | |
1864 | p_slot->state = BLINKINGOFF_STATE; | |
1865 | info(msg_button_off, p_slot->number); | |
1866 | } else { | |
1867 | dbg("slot is off\n"); | |
1868 | p_slot->state = BLINKINGON_STATE; | |
1869 | info(msg_button_on, p_slot->number); | |
1870 | } | |
6aa4cdd0 | 1871 | mutex_lock(&ctrl->crit_sect); |
861fefbf | 1872 | |
1da177e4 | 1873 | dbg("blink green LED and turn off amber\n"); |
861fefbf | 1874 | |
1da177e4 LT |
1875 | amber_LED_off (ctrl, hp_slot); |
1876 | green_LED_blink (ctrl, hp_slot); | |
861fefbf | 1877 | |
1da177e4 LT |
1878 | set_SOGO(ctrl); |
1879 | ||
1880 | /* Wait for SOBS to be unset */ | |
1881 | wait_for_ctrl_irq (ctrl); | |
1882 | ||
6aa4cdd0 | 1883 | mutex_unlock(&ctrl->crit_sect); |
1da177e4 LT |
1884 | init_timer(&p_slot->task_event); |
1885 | p_slot->hp_slot = hp_slot; | |
1886 | p_slot->ctrl = ctrl; | |
1887 | /* p_slot->physical_slot = physical_slot; */ | |
1888 | p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */ | |
1889 | p_slot->task_event.function = pushbutton_helper_thread; | |
1890 | p_slot->task_event.data = (u32) p_slot; | |
1891 | ||
1892 | dbg("add_timer p_slot = %p\n", p_slot); | |
1893 | add_timer(&p_slot->task_event); | |
1894 | } | |
1895 | /***********POWER FAULT */ | |
1896 | else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) { | |
1897 | dbg("power fault\n"); | |
1898 | } else { | |
1899 | /* refresh notification */ | |
1900 | if (p_slot) | |
1901 | update_slot_info(ctrl, p_slot); | |
1902 | } | |
1903 | ||
1904 | ctrl->event_queue[loop].event_type = 0; | |
1905 | ||
1906 | change = 1; | |
1907 | } | |
1908 | } /* End of FOR loop */ | |
1909 | } | |
1910 | ||
1911 | return; | |
1912 | } | |
1913 | ||
1914 | ||
1915 | /** | |
26e6c66e RD |
1916 | * cpqhp_pushbutton_thread - handle pushbutton events |
1917 | * @slot: target slot (struct) | |
1da177e4 | 1918 | * |
26e6c66e | 1919 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 1920 | * Handles all pending events and exits. |
1da177e4 LT |
1921 | */ |
1922 | void cpqhp_pushbutton_thread(unsigned long slot) | |
1923 | { | |
1924 | u8 hp_slot; | |
1925 | u8 device; | |
1926 | struct pci_func *func; | |
1927 | struct slot *p_slot = (struct slot *) slot; | |
1928 | struct controller *ctrl = (struct controller *) p_slot->ctrl; | |
1929 | ||
1930 | pushbutton_pending = 0; | |
1931 | hp_slot = p_slot->hp_slot; | |
1932 | ||
1933 | device = p_slot->device; | |
1934 | ||
1935 | if (is_slot_enabled(ctrl, hp_slot)) { | |
1936 | p_slot->state = POWEROFF_STATE; | |
1937 | /* power Down board */ | |
1938 | func = cpqhp_slot_find(p_slot->bus, p_slot->device, 0); | |
1939 | dbg("In power_down_board, func = %p, ctrl = %p\n", func, ctrl); | |
1940 | if (!func) { | |
66bef8c0 | 1941 | dbg("Error! func NULL in %s\n", __func__); |
1da177e4 LT |
1942 | return ; |
1943 | } | |
1944 | ||
00395410 AB |
1945 | if (cpqhp_process_SS(ctrl, func) != 0) { |
1946 | amber_LED_on(ctrl, hp_slot); | |
1947 | green_LED_on(ctrl, hp_slot); | |
1da177e4 | 1948 | |
00395410 AB |
1949 | set_SOGO(ctrl); |
1950 | ||
1951 | /* Wait for SOBS to be unset */ | |
1952 | wait_for_ctrl_irq(ctrl); | |
1da177e4 LT |
1953 | } |
1954 | ||
1955 | p_slot->state = STATIC_STATE; | |
1956 | } else { | |
1957 | p_slot->state = POWERON_STATE; | |
1958 | /* slot is off */ | |
1959 | ||
1960 | func = cpqhp_slot_find(p_slot->bus, p_slot->device, 0); | |
1961 | dbg("In add_board, func = %p, ctrl = %p\n", func, ctrl); | |
1962 | if (!func) { | |
66bef8c0 | 1963 | dbg("Error! func NULL in %s\n", __func__); |
1da177e4 LT |
1964 | return ; |
1965 | } | |
1966 | ||
b8d9cb2a | 1967 | if (ctrl != NULL) { |
1da177e4 LT |
1968 | if (cpqhp_process_SI(ctrl, func) != 0) { |
1969 | amber_LED_on(ctrl, hp_slot); | |
1970 | green_LED_off(ctrl, hp_slot); | |
861fefbf | 1971 | |
1da177e4 LT |
1972 | set_SOGO(ctrl); |
1973 | ||
1974 | /* Wait for SOBS to be unset */ | |
1975 | wait_for_ctrl_irq (ctrl); | |
1976 | } | |
1977 | } | |
1978 | ||
1979 | p_slot->state = STATIC_STATE; | |
1980 | } | |
1981 | ||
1982 | return; | |
1983 | } | |
1984 | ||
1985 | ||
1986 | int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func) | |
1987 | { | |
1988 | u8 device, hp_slot; | |
1989 | u16 temp_word; | |
1990 | u32 tempdword; | |
1991 | int rc; | |
1992 | struct slot* p_slot; | |
1993 | int physical_slot = 0; | |
1994 | ||
1995 | tempdword = 0; | |
1996 | ||
1997 | device = func->device; | |
1998 | hp_slot = device - ctrl->slot_device_offset; | |
1999 | p_slot = cpqhp_find_slot(ctrl, device); | |
2000 | if (p_slot) | |
2001 | physical_slot = p_slot->number; | |
2002 | ||
2003 | /* Check to see if the interlock is closed */ | |
2004 | tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); | |
2005 | ||
2006 | if (tempdword & (0x01 << hp_slot)) { | |
2007 | return 1; | |
2008 | } | |
2009 | ||
2010 | if (func->is_a_board) { | |
2011 | rc = board_replaced(func, ctrl); | |
2012 | } else { | |
2013 | /* add board */ | |
2014 | slot_remove(func); | |
2015 | ||
2016 | func = cpqhp_slot_create(ctrl->bus); | |
2017 | if (func == NULL) | |
2018 | return 1; | |
2019 | ||
2020 | func->bus = ctrl->bus; | |
2021 | func->device = device; | |
2022 | func->function = 0; | |
2023 | func->configured = 0; | |
2024 | func->is_a_board = 1; | |
2025 | ||
2026 | /* We have to save the presence info for these slots */ | |
2027 | temp_word = ctrl->ctrl_int_comp >> 16; | |
2028 | func->presence_save = (temp_word >> hp_slot) & 0x01; | |
2029 | func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02; | |
2030 | ||
2031 | if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) { | |
2032 | func->switch_save = 0; | |
2033 | } else { | |
2034 | func->switch_save = 0x10; | |
2035 | } | |
2036 | ||
2037 | rc = board_added(func, ctrl); | |
2038 | if (rc) { | |
2039 | if (is_bridge(func)) { | |
2040 | bridge_slot_remove(func); | |
2041 | } else | |
2042 | slot_remove(func); | |
2043 | ||
2044 | /* Setup slot structure with entry for empty slot */ | |
2045 | func = cpqhp_slot_create(ctrl->bus); | |
2046 | ||
2047 | if (func == NULL) | |
2048 | return 1; | |
2049 | ||
2050 | func->bus = ctrl->bus; | |
2051 | func->device = device; | |
2052 | func->function = 0; | |
2053 | func->configured = 0; | |
2054 | func->is_a_board = 0; | |
2055 | ||
2056 | /* We have to save the presence info for these slots */ | |
2057 | temp_word = ctrl->ctrl_int_comp >> 16; | |
2058 | func->presence_save = (temp_word >> hp_slot) & 0x01; | |
2059 | func->presence_save |= | |
2060 | (temp_word >> (hp_slot + 7)) & 0x02; | |
2061 | ||
2062 | if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) { | |
2063 | func->switch_save = 0; | |
2064 | } else { | |
2065 | func->switch_save = 0x10; | |
2066 | } | |
2067 | } | |
2068 | } | |
2069 | ||
2070 | if (rc) { | |
66bef8c0 | 2071 | dbg("%s: rc = %d\n", __func__, rc); |
1da177e4 LT |
2072 | } |
2073 | ||
2074 | if (p_slot) | |
2075 | update_slot_info(ctrl, p_slot); | |
2076 | ||
2077 | return rc; | |
2078 | } | |
2079 | ||
2080 | ||
2081 | int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func) | |
2082 | { | |
2083 | u8 device, class_code, header_type, BCR; | |
2084 | u8 index = 0; | |
2085 | u8 replace_flag; | |
2086 | u32 rc = 0; | |
2087 | unsigned int devfn; | |
2088 | struct slot* p_slot; | |
2089 | struct pci_bus *pci_bus = ctrl->pci_bus; | |
2090 | int physical_slot=0; | |
2091 | ||
861fefbf | 2092 | device = func->device; |
1da177e4 LT |
2093 | func = cpqhp_slot_find(ctrl->bus, device, index++); |
2094 | p_slot = cpqhp_find_slot(ctrl, device); | |
2095 | if (p_slot) { | |
2096 | physical_slot = p_slot->number; | |
2097 | } | |
2098 | ||
2099 | /* Make sure there are no video controllers here */ | |
2100 | while (func && !rc) { | |
2101 | pci_bus->number = func->bus; | |
2102 | devfn = PCI_DEVFN(func->device, func->function); | |
2103 | ||
2104 | /* Check the Class Code */ | |
2105 | rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code); | |
2106 | if (rc) | |
2107 | return rc; | |
2108 | ||
2109 | if (class_code == PCI_BASE_CLASS_DISPLAY) { | |
2110 | /* Display/Video adapter (not supported) */ | |
2111 | rc = REMOVE_NOT_SUPPORTED; | |
2112 | } else { | |
2113 | /* See if it's a bridge */ | |
2114 | rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type); | |
2115 | if (rc) | |
2116 | return rc; | |
2117 | ||
2118 | /* If it's a bridge, check the VGA Enable bit */ | |
2119 | if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { | |
2120 | rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_BRIDGE_CONTROL, &BCR); | |
2121 | if (rc) | |
2122 | return rc; | |
2123 | ||
2124 | /* If the VGA Enable bit is set, remove isn't | |
2125 | * supported */ | |
1d3ecf13 | 2126 | if (BCR & PCI_BRIDGE_CTL_VGA) |
1da177e4 | 2127 | rc = REMOVE_NOT_SUPPORTED; |
1da177e4 LT |
2128 | } |
2129 | } | |
2130 | ||
2131 | func = cpqhp_slot_find(ctrl->bus, device, index++); | |
2132 | } | |
2133 | ||
2134 | func = cpqhp_slot_find(ctrl->bus, device, 0); | |
2135 | if ((func != NULL) && !rc) { | |
2136 | /* FIXME: Replace flag should be passed into process_SS */ | |
2137 | replace_flag = !(ctrl->add_support); | |
2138 | rc = remove_board(func, replace_flag, ctrl); | |
2139 | } else if (!rc) { | |
2140 | rc = 1; | |
2141 | } | |
2142 | ||
2143 | if (p_slot) | |
2144 | update_slot_info(ctrl, p_slot); | |
2145 | ||
2146 | return rc; | |
2147 | } | |
2148 | ||
2149 | /** | |
26e6c66e | 2150 | * switch_leds - switch the leds, go from one site to the other. |
1da177e4 LT |
2151 | * @ctrl: controller to use |
2152 | * @num_of_slots: number of slots to use | |
26e6c66e | 2153 | * @work_LED: LED control value |
1da177e4 LT |
2154 | * @direction: 1 to start from the left side, 0 to start right. |
2155 | */ | |
2156 | static void switch_leds(struct controller *ctrl, const int num_of_slots, | |
2157 | u32 *work_LED, const int direction) | |
2158 | { | |
2159 | int loop; | |
2160 | ||
2161 | for (loop = 0; loop < num_of_slots; loop++) { | |
2162 | if (direction) | |
2163 | *work_LED = *work_LED >> 1; | |
2164 | else | |
2165 | *work_LED = *work_LED << 1; | |
2166 | writel(*work_LED, ctrl->hpc_reg + LED_CONTROL); | |
2167 | ||
2168 | set_SOGO(ctrl); | |
2169 | ||
2170 | /* Wait for SOGO interrupt */ | |
2171 | wait_for_ctrl_irq(ctrl); | |
2172 | ||
2173 | /* Get ready for next iteration */ | |
2174 | long_delay((2*HZ)/10); | |
2175 | } | |
2176 | } | |
2177 | ||
2178 | /** | |
26e6c66e RD |
2179 | * cpqhp_hardware_test - runs hardware tests |
2180 | * @ctrl: target controller | |
2181 | * @test_num: the number written to the "test" file in sysfs. | |
1da177e4 LT |
2182 | * |
2183 | * For hot plug ctrl folks to play with. | |
1da177e4 LT |
2184 | */ |
2185 | int cpqhp_hardware_test(struct controller *ctrl, int test_num) | |
2186 | { | |
2187 | u32 save_LED; | |
2188 | u32 work_LED; | |
2189 | int loop; | |
2190 | int num_of_slots; | |
2191 | ||
2192 | num_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0f; | |
2193 | ||
2194 | switch (test_num) { | |
1d3ecf13 AC |
2195 | case 1: |
2196 | /* Do stuff here! */ | |
2197 | ||
2198 | /* Do that funky LED thing */ | |
2199 | /* so we can restore them later */ | |
2200 | save_LED = readl(ctrl->hpc_reg + LED_CONTROL); | |
2201 | work_LED = 0x01010101; | |
2202 | switch_leds(ctrl, num_of_slots, &work_LED, 0); | |
2203 | switch_leds(ctrl, num_of_slots, &work_LED, 1); | |
2204 | switch_leds(ctrl, num_of_slots, &work_LED, 0); | |
2205 | switch_leds(ctrl, num_of_slots, &work_LED, 1); | |
2206 | ||
2207 | work_LED = 0x01010000; | |
2208 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); | |
2209 | switch_leds(ctrl, num_of_slots, &work_LED, 0); | |
2210 | switch_leds(ctrl, num_of_slots, &work_LED, 1); | |
2211 | work_LED = 0x00000101; | |
2212 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); | |
2213 | switch_leds(ctrl, num_of_slots, &work_LED, 0); | |
2214 | switch_leds(ctrl, num_of_slots, &work_LED, 1); | |
2215 | ||
2216 | work_LED = 0x01010000; | |
2217 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); | |
2218 | for (loop = 0; loop < num_of_slots; loop++) { | |
2219 | set_SOGO(ctrl); | |
1da177e4 | 2220 | |
1d3ecf13 AC |
2221 | /* Wait for SOGO interrupt */ |
2222 | wait_for_ctrl_irq (ctrl); | |
1da177e4 | 2223 | |
1d3ecf13 AC |
2224 | /* Get ready for next iteration */ |
2225 | long_delay((3*HZ)/10); | |
2226 | work_LED = work_LED >> 16; | |
2227 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); | |
861fefbf | 2228 | |
1d3ecf13 | 2229 | set_SOGO(ctrl); |
1da177e4 | 2230 | |
1d3ecf13 AC |
2231 | /* Wait for SOGO interrupt */ |
2232 | wait_for_ctrl_irq (ctrl); | |
1da177e4 | 2233 | |
1d3ecf13 AC |
2234 | /* Get ready for next iteration */ |
2235 | long_delay((3*HZ)/10); | |
2236 | work_LED = work_LED << 16; | |
2237 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); | |
2238 | work_LED = work_LED << 1; | |
2239 | writel(work_LED, ctrl->hpc_reg + LED_CONTROL); | |
2240 | } | |
1da177e4 | 2241 | |
1d3ecf13 AC |
2242 | /* put it back the way it was */ |
2243 | writel(save_LED, ctrl->hpc_reg + LED_CONTROL); | |
1da177e4 | 2244 | |
1d3ecf13 | 2245 | set_SOGO(ctrl); |
1da177e4 | 2246 | |
1d3ecf13 AC |
2247 | /* Wait for SOBS to be unset */ |
2248 | wait_for_ctrl_irq (ctrl); | |
2249 | break; | |
2250 | case 2: | |
2251 | /* Do other stuff here! */ | |
2252 | break; | |
2253 | case 3: | |
2254 | /* and more... */ | |
2255 | break; | |
1da177e4 LT |
2256 | } |
2257 | return 0; | |
2258 | } | |
2259 | ||
2260 | ||
2261 | /** | |
2262 | * configure_new_device - Configures the PCI header information of one board. | |
1da177e4 LT |
2263 | * @ctrl: pointer to controller structure |
2264 | * @func: pointer to function structure | |
2265 | * @behind_bridge: 1 if this is a recursive call, 0 if not | |
2266 | * @resources: pointer to set of resource lists | |
2267 | * | |
26e6c66e | 2268 | * Returns 0 if success. |
1da177e4 LT |
2269 | */ |
2270 | static u32 configure_new_device(struct controller * ctrl, struct pci_func * func, | |
2271 | u8 behind_bridge, struct resource_lists * resources) | |
2272 | { | |
2273 | u8 temp_byte, function, max_functions, stop_it; | |
2274 | int rc; | |
2275 | u32 ID; | |
2276 | struct pci_func *new_slot; | |
2277 | int index; | |
2278 | ||
2279 | new_slot = func; | |
2280 | ||
66bef8c0 | 2281 | dbg("%s\n", __func__); |
1da177e4 LT |
2282 | /* Check for Multi-function device */ |
2283 | ctrl->pci_bus->number = func->bus; | |
2284 | rc = pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(func->device, func->function), 0x0E, &temp_byte); | |
2285 | if (rc) { | |
66bef8c0 | 2286 | dbg("%s: rc = %d\n", __func__, rc); |
1da177e4 LT |
2287 | return rc; |
2288 | } | |
2289 | ||
2290 | if (temp_byte & 0x80) /* Multi-function device */ | |
2291 | max_functions = 8; | |
2292 | else | |
2293 | max_functions = 1; | |
2294 | ||
2295 | function = 0; | |
2296 | ||
2297 | do { | |
2298 | rc = configure_new_function(ctrl, new_slot, behind_bridge, resources); | |
2299 | ||
2300 | if (rc) { | |
2301 | dbg("configure_new_function failed %d\n",rc); | |
2302 | index = 0; | |
2303 | ||
2304 | while (new_slot) { | |
2305 | new_slot = cpqhp_slot_find(new_slot->bus, new_slot->device, index++); | |
2306 | ||
2307 | if (new_slot) | |
2308 | cpqhp_return_board_resources(new_slot, resources); | |
2309 | } | |
2310 | ||
2311 | return rc; | |
2312 | } | |
2313 | ||
2314 | function++; | |
2315 | ||
2316 | stop_it = 0; | |
2317 | ||
2318 | /* The following loop skips to the next present function | |
2319 | * and creates a board structure */ | |
2320 | ||
2321 | while ((function < max_functions) && (!stop_it)) { | |
2322 | pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(func->device, function), 0x00, &ID); | |
2323 | ||
1d3ecf13 | 2324 | if (ID == 0xFFFFFFFF) { |
1da177e4 | 2325 | function++; |
1d3ecf13 | 2326 | } else { |
1da177e4 LT |
2327 | /* Setup slot structure. */ |
2328 | new_slot = cpqhp_slot_create(func->bus); | |
2329 | ||
2330 | if (new_slot == NULL) | |
2331 | return 1; | |
2332 | ||
2333 | new_slot->bus = func->bus; | |
2334 | new_slot->device = func->device; | |
2335 | new_slot->function = function; | |
2336 | new_slot->is_a_board = 1; | |
2337 | new_slot->status = 0; | |
2338 | ||
2339 | stop_it++; | |
2340 | } | |
2341 | } | |
2342 | ||
2343 | } while (function < max_functions); | |
2344 | dbg("returning from configure_new_device\n"); | |
2345 | ||
2346 | return 0; | |
2347 | } | |
2348 | ||
2349 | ||
2350 | /* | |
1d3ecf13 AC |
2351 | * Configuration logic that involves the hotplug data structures and |
2352 | * their bookkeeping | |
1da177e4 LT |
2353 | */ |
2354 | ||
2355 | ||
2356 | /** | |
2357 | * configure_new_function - Configures the PCI header information of one device | |
1da177e4 LT |
2358 | * @ctrl: pointer to controller structure |
2359 | * @func: pointer to function structure | |
2360 | * @behind_bridge: 1 if this is a recursive call, 0 if not | |
2361 | * @resources: pointer to set of resource lists | |
2362 | * | |
2363 | * Calls itself recursively for bridged devices. | |
26e6c66e | 2364 | * Returns 0 if success. |
1da177e4 LT |
2365 | */ |
2366 | static int configure_new_function(struct controller *ctrl, struct pci_func *func, | |
2367 | u8 behind_bridge, | |
2368 | struct resource_lists *resources) | |
2369 | { | |
2370 | int cloop; | |
2371 | u8 IRQ = 0; | |
2372 | u8 temp_byte; | |
2373 | u8 device; | |
2374 | u8 class_code; | |
2375 | u16 command; | |
2376 | u16 temp_word; | |
2377 | u32 temp_dword; | |
2378 | u32 rc; | |
2379 | u32 temp_register; | |
2380 | u32 base; | |
2381 | u32 ID; | |
2382 | unsigned int devfn; | |
2383 | struct pci_resource *mem_node; | |
2384 | struct pci_resource *p_mem_node; | |
2385 | struct pci_resource *io_node; | |
2386 | struct pci_resource *bus_node; | |
2387 | struct pci_resource *hold_mem_node; | |
2388 | struct pci_resource *hold_p_mem_node; | |
2389 | struct pci_resource *hold_IO_node; | |
2390 | struct pci_resource *hold_bus_node; | |
2391 | struct irq_mapping irqs; | |
2392 | struct pci_func *new_slot; | |
2393 | struct pci_bus *pci_bus; | |
2394 | struct resource_lists temp_resources; | |
2395 | ||
2396 | pci_bus = ctrl->pci_bus; | |
2397 | pci_bus->number = func->bus; | |
2398 | devfn = PCI_DEVFN(func->device, func->function); | |
2399 | ||
2400 | /* Check for Bridge */ | |
2401 | rc = pci_bus_read_config_byte(pci_bus, devfn, PCI_HEADER_TYPE, &temp_byte); | |
2402 | if (rc) | |
2403 | return rc; | |
2404 | ||
1d3ecf13 | 2405 | if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { |
1da177e4 LT |
2406 | /* set Primary bus */ |
2407 | dbg("set Primary bus = %d\n", func->bus); | |
2408 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_PRIMARY_BUS, func->bus); | |
2409 | if (rc) | |
2410 | return rc; | |
2411 | ||
2412 | /* find range of busses to use */ | |
2413 | dbg("find ranges of buses to use\n"); | |
2414 | bus_node = get_max_resource(&(resources->bus_head), 1); | |
2415 | ||
2416 | /* If we don't have any busses to allocate, we can't continue */ | |
2417 | if (!bus_node) | |
2418 | return -ENOMEM; | |
2419 | ||
2420 | /* set Secondary bus */ | |
2421 | temp_byte = bus_node->base; | |
2422 | dbg("set Secondary bus = %d\n", bus_node->base); | |
2423 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, temp_byte); | |
2424 | if (rc) | |
2425 | return rc; | |
2426 | ||
2427 | /* set subordinate bus */ | |
2428 | temp_byte = bus_node->base + bus_node->length - 1; | |
2429 | dbg("set subordinate bus = %d\n", bus_node->base + bus_node->length - 1); | |
2430 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte); | |
2431 | if (rc) | |
2432 | return rc; | |
2433 | ||
2434 | /* set subordinate Latency Timer and base Latency Timer */ | |
2435 | temp_byte = 0x40; | |
2436 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SEC_LATENCY_TIMER, temp_byte); | |
2437 | if (rc) | |
2438 | return rc; | |
2439 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_LATENCY_TIMER, temp_byte); | |
2440 | if (rc) | |
2441 | return rc; | |
2442 | ||
2443 | /* set Cache Line size */ | |
2444 | temp_byte = 0x08; | |
2445 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_CACHE_LINE_SIZE, temp_byte); | |
2446 | if (rc) | |
2447 | return rc; | |
2448 | ||
2449 | /* Setup the IO, memory, and prefetchable windows */ | |
2450 | io_node = get_max_resource(&(resources->io_head), 0x1000); | |
2451 | if (!io_node) | |
2452 | return -ENOMEM; | |
2453 | mem_node = get_max_resource(&(resources->mem_head), 0x100000); | |
2454 | if (!mem_node) | |
2455 | return -ENOMEM; | |
2456 | p_mem_node = get_max_resource(&(resources->p_mem_head), 0x100000); | |
2457 | if (!p_mem_node) | |
2458 | return -ENOMEM; | |
2459 | dbg("Setup the IO, memory, and prefetchable windows\n"); | |
2460 | dbg("io_node\n"); | |
2461 | dbg("(base, len, next) (%x, %x, %p)\n", io_node->base, | |
2462 | io_node->length, io_node->next); | |
2463 | dbg("mem_node\n"); | |
2464 | dbg("(base, len, next) (%x, %x, %p)\n", mem_node->base, | |
2465 | mem_node->length, mem_node->next); | |
2466 | dbg("p_mem_node\n"); | |
2467 | dbg("(base, len, next) (%x, %x, %p)\n", p_mem_node->base, | |
2468 | p_mem_node->length, p_mem_node->next); | |
2469 | ||
2470 | /* set up the IRQ info */ | |
2471 | if (!resources->irqs) { | |
2472 | irqs.barber_pole = 0; | |
2473 | irqs.interrupt[0] = 0; | |
2474 | irqs.interrupt[1] = 0; | |
2475 | irqs.interrupt[2] = 0; | |
2476 | irqs.interrupt[3] = 0; | |
2477 | irqs.valid_INT = 0; | |
2478 | } else { | |
2479 | irqs.barber_pole = resources->irqs->barber_pole; | |
2480 | irqs.interrupt[0] = resources->irqs->interrupt[0]; | |
2481 | irqs.interrupt[1] = resources->irqs->interrupt[1]; | |
2482 | irqs.interrupt[2] = resources->irqs->interrupt[2]; | |
2483 | irqs.interrupt[3] = resources->irqs->interrupt[3]; | |
2484 | irqs.valid_INT = resources->irqs->valid_INT; | |
2485 | } | |
2486 | ||
2487 | /* set up resource lists that are now aligned on top and bottom | |
2488 | * for anything behind the bridge. */ | |
2489 | temp_resources.bus_head = bus_node; | |
2490 | temp_resources.io_head = io_node; | |
2491 | temp_resources.mem_head = mem_node; | |
2492 | temp_resources.p_mem_head = p_mem_node; | |
2493 | temp_resources.irqs = &irqs; | |
2494 | ||
2495 | /* Make copies of the nodes we are going to pass down so that | |
427438c6 AC |
2496 | * if there is a problem,we can just use these to free resources |
2497 | */ | |
1da177e4 LT |
2498 | hold_bus_node = kmalloc(sizeof(*hold_bus_node), GFP_KERNEL); |
2499 | hold_IO_node = kmalloc(sizeof(*hold_IO_node), GFP_KERNEL); | |
2500 | hold_mem_node = kmalloc(sizeof(*hold_mem_node), GFP_KERNEL); | |
2501 | hold_p_mem_node = kmalloc(sizeof(*hold_p_mem_node), GFP_KERNEL); | |
2502 | ||
2503 | if (!hold_bus_node || !hold_IO_node || !hold_mem_node || !hold_p_mem_node) { | |
2504 | kfree(hold_bus_node); | |
2505 | kfree(hold_IO_node); | |
2506 | kfree(hold_mem_node); | |
2507 | kfree(hold_p_mem_node); | |
2508 | ||
2509 | return 1; | |
2510 | } | |
2511 | ||
2512 | memcpy(hold_bus_node, bus_node, sizeof(struct pci_resource)); | |
2513 | ||
2514 | bus_node->base += 1; | |
2515 | bus_node->length -= 1; | |
2516 | bus_node->next = NULL; | |
2517 | ||
2518 | /* If we have IO resources copy them and fill in the bridge's | |
2519 | * IO range registers */ | |
2520 | if (io_node) { | |
2521 | memcpy(hold_IO_node, io_node, sizeof(struct pci_resource)); | |
2522 | io_node->next = NULL; | |
2523 | ||
2524 | /* set IO base and Limit registers */ | |
2525 | temp_byte = io_node->base >> 8; | |
2526 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_BASE, temp_byte); | |
2527 | ||
2528 | temp_byte = (io_node->base + io_node->length - 1) >> 8; | |
2529 | rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte); | |
2530 | } else { | |
2531 | kfree(hold_IO_node); | |
2532 | hold_IO_node = NULL; | |
2533 | } | |
2534 | ||
2535 | /* If we have memory resources copy them and fill in the | |
2536 | * bridge's memory range registers. Otherwise, fill in the | |
2537 | * range registers with values that disable them. */ | |
2538 | if (mem_node) { | |
2539 | memcpy(hold_mem_node, mem_node, sizeof(struct pci_resource)); | |
2540 | mem_node->next = NULL; | |
2541 | ||
2542 | /* set Mem base and Limit registers */ | |
2543 | temp_word = mem_node->base >> 16; | |
2544 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word); | |
2545 | ||
2546 | temp_word = (mem_node->base + mem_node->length - 1) >> 16; | |
2547 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); | |
2548 | } else { | |
2549 | temp_word = 0xFFFF; | |
2550 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word); | |
2551 | ||
2552 | temp_word = 0x0000; | |
2553 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); | |
2554 | ||
2555 | kfree(hold_mem_node); | |
2556 | hold_mem_node = NULL; | |
2557 | } | |
2558 | ||
2555f7bd AB |
2559 | memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource)); |
2560 | p_mem_node->next = NULL; | |
1da177e4 | 2561 | |
2555f7bd AB |
2562 | /* set Pre Mem base and Limit registers */ |
2563 | temp_word = p_mem_node->base >> 16; | |
2564 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word); | |
1da177e4 | 2565 | |
2555f7bd AB |
2566 | temp_word = (p_mem_node->base + p_mem_node->length - 1) >> 16; |
2567 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); | |
1da177e4 | 2568 | |
427438c6 AC |
2569 | /* Adjust this to compensate for extra adjustment in first loop |
2570 | */ | |
1da177e4 LT |
2571 | irqs.barber_pole--; |
2572 | ||
2573 | rc = 0; | |
2574 | ||
2575 | /* Here we actually find the devices and configure them */ | |
2576 | for (device = 0; (device <= 0x1F) && !rc; device++) { | |
2577 | irqs.barber_pole = (irqs.barber_pole + 1) & 0x03; | |
2578 | ||
2579 | ID = 0xFFFFFFFF; | |
2580 | pci_bus->number = hold_bus_node->base; | |
2581 | pci_bus_read_config_dword (pci_bus, PCI_DEVFN(device, 0), 0x00, &ID); | |
2582 | pci_bus->number = func->bus; | |
2583 | ||
2584 | if (ID != 0xFFFFFFFF) { /* device present */ | |
2585 | /* Setup slot structure. */ | |
2586 | new_slot = cpqhp_slot_create(hold_bus_node->base); | |
2587 | ||
2588 | if (new_slot == NULL) { | |
2589 | rc = -ENOMEM; | |
2590 | continue; | |
2591 | } | |
2592 | ||
2593 | new_slot->bus = hold_bus_node->base; | |
2594 | new_slot->device = device; | |
2595 | new_slot->function = 0; | |
2596 | new_slot->is_a_board = 1; | |
2597 | new_slot->status = 0; | |
2598 | ||
2599 | rc = configure_new_device(ctrl, new_slot, 1, &temp_resources); | |
2600 | dbg("configure_new_device rc=0x%x\n",rc); | |
2601 | } /* End of IF (device in slot?) */ | |
2602 | } /* End of FOR loop */ | |
2603 | ||
2604 | if (rc) | |
2605 | goto free_and_out; | |
2606 | /* save the interrupt routing information */ | |
2607 | if (resources->irqs) { | |
2608 | resources->irqs->interrupt[0] = irqs.interrupt[0]; | |
2609 | resources->irqs->interrupt[1] = irqs.interrupt[1]; | |
2610 | resources->irqs->interrupt[2] = irqs.interrupt[2]; | |
2611 | resources->irqs->interrupt[3] = irqs.interrupt[3]; | |
2612 | resources->irqs->valid_INT = irqs.valid_INT; | |
2613 | } else if (!behind_bridge) { | |
2614 | /* We need to hook up the interrupts here */ | |
2615 | for (cloop = 0; cloop < 4; cloop++) { | |
2616 | if (irqs.valid_INT & (0x01 << cloop)) { | |
2617 | rc = cpqhp_set_irq(func->bus, func->device, | |
98d3333a | 2618 | cloop + 1, irqs.interrupt[cloop]); |
1da177e4 LT |
2619 | if (rc) |
2620 | goto free_and_out; | |
2621 | } | |
2622 | } /* end of for loop */ | |
2623 | } | |
2624 | /* Return unused bus resources | |
2625 | * First use the temporary node to store information for | |
2626 | * the board */ | |
2627 | if (hold_bus_node && bus_node && temp_resources.bus_head) { | |
2628 | hold_bus_node->length = bus_node->base - hold_bus_node->base; | |
2629 | ||
2630 | hold_bus_node->next = func->bus_head; | |
2631 | func->bus_head = hold_bus_node; | |
2632 | ||
2633 | temp_byte = temp_resources.bus_head->base - 1; | |
2634 | ||
2635 | /* set subordinate bus */ | |
2636 | rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte); | |
2637 | ||
2638 | if (temp_resources.bus_head->length == 0) { | |
2639 | kfree(temp_resources.bus_head); | |
2640 | temp_resources.bus_head = NULL; | |
2641 | } else { | |
2642 | return_resource(&(resources->bus_head), temp_resources.bus_head); | |
2643 | } | |
2644 | } | |
2645 | ||
2646 | /* If we have IO space available and there is some left, | |
2647 | * return the unused portion */ | |
2648 | if (hold_IO_node && temp_resources.io_head) { | |
2649 | io_node = do_pre_bridge_resource_split(&(temp_resources.io_head), | |
2650 | &hold_IO_node, 0x1000); | |
2651 | ||
2652 | /* Check if we were able to split something off */ | |
2653 | if (io_node) { | |
2654 | hold_IO_node->base = io_node->base + io_node->length; | |
2655 | ||
2656 | temp_byte = (hold_IO_node->base) >> 8; | |
2657 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_IO_BASE, temp_byte); | |
2658 | ||
2659 | return_resource(&(resources->io_head), io_node); | |
2660 | } | |
2661 | ||
2662 | io_node = do_bridge_resource_split(&(temp_resources.io_head), 0x1000); | |
2663 | ||
2664 | /* Check if we were able to split something off */ | |
2665 | if (io_node) { | |
2666 | /* First use the temporary node to store | |
2667 | * information for the board */ | |
2668 | hold_IO_node->length = io_node->base - hold_IO_node->base; | |
2669 | ||
2670 | /* If we used any, add it to the board's list */ | |
2671 | if (hold_IO_node->length) { | |
2672 | hold_IO_node->next = func->io_head; | |
2673 | func->io_head = hold_IO_node; | |
2674 | ||
2675 | temp_byte = (io_node->base - 1) >> 8; | |
2676 | rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_LIMIT, temp_byte); | |
2677 | ||
2678 | return_resource(&(resources->io_head), io_node); | |
2679 | } else { | |
2680 | /* it doesn't need any IO */ | |
2681 | temp_word = 0x0000; | |
2682 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_IO_LIMIT, temp_word); | |
2683 | ||
2684 | return_resource(&(resources->io_head), io_node); | |
2685 | kfree(hold_IO_node); | |
2686 | } | |
2687 | } else { | |
2688 | /* it used most of the range */ | |
2689 | hold_IO_node->next = func->io_head; | |
2690 | func->io_head = hold_IO_node; | |
2691 | } | |
2692 | } else if (hold_IO_node) { | |
2693 | /* it used the whole range */ | |
2694 | hold_IO_node->next = func->io_head; | |
2695 | func->io_head = hold_IO_node; | |
2696 | } | |
2697 | /* If we have memory space available and there is some left, | |
2698 | * return the unused portion */ | |
2699 | if (hold_mem_node && temp_resources.mem_head) { | |
2700 | mem_node = do_pre_bridge_resource_split(&(temp_resources. mem_head), | |
2701 | &hold_mem_node, 0x100000); | |
2702 | ||
2703 | /* Check if we were able to split something off */ | |
2704 | if (mem_node) { | |
2705 | hold_mem_node->base = mem_node->base + mem_node->length; | |
2706 | ||
2707 | temp_word = (hold_mem_node->base) >> 16; | |
2708 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_BASE, temp_word); | |
2709 | ||
2710 | return_resource(&(resources->mem_head), mem_node); | |
2711 | } | |
2712 | ||
2713 | mem_node = do_bridge_resource_split(&(temp_resources.mem_head), 0x100000); | |
2714 | ||
2715 | /* Check if we were able to split something off */ | |
2716 | if (mem_node) { | |
2717 | /* First use the temporary node to store | |
2718 | * information for the board */ | |
2719 | hold_mem_node->length = mem_node->base - hold_mem_node->base; | |
2720 | ||
2721 | if (hold_mem_node->length) { | |
2722 | hold_mem_node->next = func->mem_head; | |
2723 | func->mem_head = hold_mem_node; | |
2724 | ||
2725 | /* configure end address */ | |
2726 | temp_word = (mem_node->base - 1) >> 16; | |
2727 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); | |
2728 | ||
2729 | /* Return unused resources to the pool */ | |
2730 | return_resource(&(resources->mem_head), mem_node); | |
2731 | } else { | |
2732 | /* it doesn't need any Mem */ | |
2733 | temp_word = 0x0000; | |
2734 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); | |
2735 | ||
2736 | return_resource(&(resources->mem_head), mem_node); | |
2737 | kfree(hold_mem_node); | |
2738 | } | |
2739 | } else { | |
2740 | /* it used most of the range */ | |
2741 | hold_mem_node->next = func->mem_head; | |
2742 | func->mem_head = hold_mem_node; | |
2743 | } | |
2744 | } else if (hold_mem_node) { | |
2745 | /* it used the whole range */ | |
2746 | hold_mem_node->next = func->mem_head; | |
2747 | func->mem_head = hold_mem_node; | |
2748 | } | |
2749 | /* If we have prefetchable memory space available and there | |
2750 | * is some left at the end, return the unused portion */ | |
2751 | if (hold_p_mem_node && temp_resources.p_mem_head) { | |
2752 | p_mem_node = do_pre_bridge_resource_split(&(temp_resources.p_mem_head), | |
2753 | &hold_p_mem_node, 0x100000); | |
2754 | ||
2755 | /* Check if we were able to split something off */ | |
2756 | if (p_mem_node) { | |
2757 | hold_p_mem_node->base = p_mem_node->base + p_mem_node->length; | |
2758 | ||
2759 | temp_word = (hold_p_mem_node->base) >> 16; | |
2760 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word); | |
2761 | ||
2762 | return_resource(&(resources->p_mem_head), p_mem_node); | |
2763 | } | |
2764 | ||
2765 | p_mem_node = do_bridge_resource_split(&(temp_resources.p_mem_head), 0x100000); | |
2766 | ||
2767 | /* Check if we were able to split something off */ | |
2768 | if (p_mem_node) { | |
2769 | /* First use the temporary node to store | |
2770 | * information for the board */ | |
2771 | hold_p_mem_node->length = p_mem_node->base - hold_p_mem_node->base; | |
2772 | ||
2773 | /* If we used any, add it to the board's list */ | |
2774 | if (hold_p_mem_node->length) { | |
2775 | hold_p_mem_node->next = func->p_mem_head; | |
2776 | func->p_mem_head = hold_p_mem_node; | |
2777 | ||
2778 | temp_word = (p_mem_node->base - 1) >> 16; | |
2779 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); | |
2780 | ||
2781 | return_resource(&(resources->p_mem_head), p_mem_node); | |
2782 | } else { | |
2783 | /* it doesn't need any PMem */ | |
2784 | temp_word = 0x0000; | |
2785 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); | |
2786 | ||
2787 | return_resource(&(resources->p_mem_head), p_mem_node); | |
2788 | kfree(hold_p_mem_node); | |
2789 | } | |
2790 | } else { | |
2791 | /* it used the most of the range */ | |
2792 | hold_p_mem_node->next = func->p_mem_head; | |
2793 | func->p_mem_head = hold_p_mem_node; | |
2794 | } | |
2795 | } else if (hold_p_mem_node) { | |
2796 | /* it used the whole range */ | |
2797 | hold_p_mem_node->next = func->p_mem_head; | |
2798 | func->p_mem_head = hold_p_mem_node; | |
2799 | } | |
2800 | /* We should be configuring an IRQ and the bridge's base address | |
2801 | * registers if it needs them. Although we have never seen such | |
2802 | * a device */ | |
2803 | ||
2804 | /* enable card */ | |
2805 | command = 0x0157; /* = PCI_COMMAND_IO | | |
2806 | * PCI_COMMAND_MEMORY | | |
2807 | * PCI_COMMAND_MASTER | | |
2808 | * PCI_COMMAND_INVALIDATE | | |
2809 | * PCI_COMMAND_PARITY | | |
2810 | * PCI_COMMAND_SERR */ | |
2811 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_COMMAND, command); | |
2812 | ||
2813 | /* set Bridge Control Register */ | |
2814 | command = 0x07; /* = PCI_BRIDGE_CTL_PARITY | | |
2815 | * PCI_BRIDGE_CTL_SERR | | |
2816 | * PCI_BRIDGE_CTL_NO_ISA */ | |
2817 | rc = pci_bus_write_config_word (pci_bus, devfn, PCI_BRIDGE_CONTROL, command); | |
2818 | } else if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_NORMAL) { | |
2819 | /* Standard device */ | |
2820 | rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code); | |
2821 | ||
2822 | if (class_code == PCI_BASE_CLASS_DISPLAY) { | |
2823 | /* Display (video) adapter (not supported) */ | |
2824 | return DEVICE_TYPE_NOT_SUPPORTED; | |
2825 | } | |
2826 | /* Figure out IO and memory needs */ | |
2827 | for (cloop = 0x10; cloop <= 0x24; cloop += 4) { | |
2828 | temp_register = 0xFFFFFFFF; | |
2829 | ||
2830 | dbg("CND: bus=%d, devfn=%d, offset=%d\n", pci_bus->number, devfn, cloop); | |
2831 | rc = pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register); | |
2832 | ||
2833 | rc = pci_bus_read_config_dword (pci_bus, devfn, cloop, &temp_register); | |
2834 | dbg("CND: base = 0x%x\n", temp_register); | |
2835 | ||
2836 | if (temp_register) { /* If this register is implemented */ | |
2837 | if ((temp_register & 0x03L) == 0x01) { | |
2838 | /* Map IO */ | |
2839 | ||
2840 | /* set base = amount of IO space */ | |
2841 | base = temp_register & 0xFFFFFFFC; | |
2842 | base = ~base + 1; | |
2843 | ||
2844 | dbg("CND: length = 0x%x\n", base); | |
2845 | io_node = get_io_resource(&(resources->io_head), base); | |
2846 | dbg("Got io_node start = %8.8x, length = %8.8x next (%p)\n", | |
2847 | io_node->base, io_node->length, io_node->next); | |
2848 | dbg("func (%p) io_head (%p)\n", func, func->io_head); | |
2849 | ||
2850 | /* allocate the resource to the board */ | |
2851 | if (io_node) { | |
2852 | base = io_node->base; | |
2853 | ||
2854 | io_node->next = func->io_head; | |
2855 | func->io_head = io_node; | |
2856 | } else | |
2857 | return -ENOMEM; | |
2858 | } else if ((temp_register & 0x0BL) == 0x08) { | |
2859 | /* Map prefetchable memory */ | |
2860 | base = temp_register & 0xFFFFFFF0; | |
2861 | base = ~base + 1; | |
2862 | ||
2863 | dbg("CND: length = 0x%x\n", base); | |
2864 | p_mem_node = get_resource(&(resources->p_mem_head), base); | |
2865 | ||
2866 | /* allocate the resource to the board */ | |
2867 | if (p_mem_node) { | |
2868 | base = p_mem_node->base; | |
2869 | ||
2870 | p_mem_node->next = func->p_mem_head; | |
2871 | func->p_mem_head = p_mem_node; | |
2872 | } else | |
2873 | return -ENOMEM; | |
2874 | } else if ((temp_register & 0x0BL) == 0x00) { | |
2875 | /* Map memory */ | |
2876 | base = temp_register & 0xFFFFFFF0; | |
2877 | base = ~base + 1; | |
2878 | ||
2879 | dbg("CND: length = 0x%x\n", base); | |
2880 | mem_node = get_resource(&(resources->mem_head), base); | |
2881 | ||
2882 | /* allocate the resource to the board */ | |
2883 | if (mem_node) { | |
2884 | base = mem_node->base; | |
2885 | ||
2886 | mem_node->next = func->mem_head; | |
2887 | func->mem_head = mem_node; | |
2888 | } else | |
2889 | return -ENOMEM; | |
2890 | } else if ((temp_register & 0x0BL) == 0x04) { | |
2891 | /* Map memory */ | |
2892 | base = temp_register & 0xFFFFFFF0; | |
2893 | base = ~base + 1; | |
2894 | ||
2895 | dbg("CND: length = 0x%x\n", base); | |
2896 | mem_node = get_resource(&(resources->mem_head), base); | |
2897 | ||
2898 | /* allocate the resource to the board */ | |
2899 | if (mem_node) { | |
2900 | base = mem_node->base; | |
2901 | ||
2902 | mem_node->next = func->mem_head; | |
2903 | func->mem_head = mem_node; | |
2904 | } else | |
2905 | return -ENOMEM; | |
2906 | } else if ((temp_register & 0x0BL) == 0x06) { | |
2907 | /* Those bits are reserved, we can't handle this */ | |
2908 | return 1; | |
2909 | } else { | |
2910 | /* Requesting space below 1M */ | |
2911 | return NOT_ENOUGH_RESOURCES; | |
2912 | } | |
2913 | ||
2914 | rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base); | |
2915 | ||
2916 | /* Check for 64-bit base */ | |
2917 | if ((temp_register & 0x07L) == 0x04) { | |
2918 | cloop += 4; | |
2919 | ||
2920 | /* Upper 32 bits of address always zero | |
2921 | * on today's systems */ | |
2922 | /* FIXME this is probably not true on | |
2923 | * Alpha and ia64??? */ | |
2924 | base = 0; | |
2925 | rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base); | |
2926 | } | |
2927 | } | |
2928 | } /* End of base register loop */ | |
2929 | if (cpqhp_legacy_mode) { | |
2930 | /* Figure out which interrupt pin this function uses */ | |
861fefbf | 2931 | rc = pci_bus_read_config_byte (pci_bus, devfn, |
1da177e4 LT |
2932 | PCI_INTERRUPT_PIN, &temp_byte); |
2933 | ||
2934 | /* If this function needs an interrupt and we are behind | |
2935 | * a bridge and the pin is tied to something that's | |
2936 | * alread mapped, set this one the same */ | |
861fefbf AC |
2937 | if (temp_byte && resources->irqs && |
2938 | (resources->irqs->valid_INT & | |
1da177e4 LT |
2939 | (0x01 << ((temp_byte + resources->irqs->barber_pole - 1) & 0x03)))) { |
2940 | /* We have to share with something already set up */ | |
861fefbf | 2941 | IRQ = resources->irqs->interrupt[(temp_byte + |
1da177e4 LT |
2942 | resources->irqs->barber_pole - 1) & 0x03]; |
2943 | } else { | |
2944 | /* Program IRQ based on card type */ | |
2945 | rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code); | |
2946 | ||
1d3ecf13 | 2947 | if (class_code == PCI_BASE_CLASS_STORAGE) |
1da177e4 | 2948 | IRQ = cpqhp_disk_irq; |
1d3ecf13 | 2949 | else |
1da177e4 | 2950 | IRQ = cpqhp_nic_irq; |
1da177e4 LT |
2951 | } |
2952 | ||
2953 | /* IRQ Line */ | |
2954 | rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_INTERRUPT_LINE, IRQ); | |
2955 | } | |
2956 | ||
2957 | if (!behind_bridge) { | |
98d3333a | 2958 | rc = cpqhp_set_irq(func->bus, func->device, temp_byte, IRQ); |
1da177e4 LT |
2959 | if (rc) |
2960 | return 1; | |
2961 | } else { | |
2962 | /* TBD - this code may also belong in the other clause | |
2963 | * of this If statement */ | |
2964 | resources->irqs->interrupt[(temp_byte + resources->irqs->barber_pole - 1) & 0x03] = IRQ; | |
2965 | resources->irqs->valid_INT |= 0x01 << (temp_byte + resources->irqs->barber_pole - 1) & 0x03; | |
2966 | } | |
2967 | ||
2968 | /* Latency Timer */ | |
2969 | temp_byte = 0x40; | |
2970 | rc = pci_bus_write_config_byte(pci_bus, devfn, | |
2971 | PCI_LATENCY_TIMER, temp_byte); | |
2972 | ||
2973 | /* Cache Line size */ | |
2974 | temp_byte = 0x08; | |
2975 | rc = pci_bus_write_config_byte(pci_bus, devfn, | |
2976 | PCI_CACHE_LINE_SIZE, temp_byte); | |
2977 | ||
2978 | /* disable ROM base Address */ | |
2979 | temp_dword = 0x00L; | |
2980 | rc = pci_bus_write_config_word(pci_bus, devfn, | |
2981 | PCI_ROM_ADDRESS, temp_dword); | |
2982 | ||
2983 | /* enable card */ | |
2984 | temp_word = 0x0157; /* = PCI_COMMAND_IO | | |
2985 | * PCI_COMMAND_MEMORY | | |
2986 | * PCI_COMMAND_MASTER | | |
2987 | * PCI_COMMAND_INVALIDATE | | |
2988 | * PCI_COMMAND_PARITY | | |
2989 | * PCI_COMMAND_SERR */ | |
2990 | rc = pci_bus_write_config_word (pci_bus, devfn, | |
2991 | PCI_COMMAND, temp_word); | |
2992 | } else { /* End of Not-A-Bridge else */ | |
2993 | /* It's some strange type of PCI adapter (Cardbus?) */ | |
2994 | return DEVICE_TYPE_NOT_SUPPORTED; | |
2995 | } | |
2996 | ||
2997 | func->configured = 1; | |
2998 | ||
2999 | return 0; | |
3000 | free_and_out: | |
3001 | cpqhp_destroy_resource_list (&temp_resources); | |
3002 | ||
3003 | return_resource(&(resources-> bus_head), hold_bus_node); | |
3004 | return_resource(&(resources-> io_head), hold_IO_node); | |
3005 | return_resource(&(resources-> mem_head), hold_mem_node); | |
3006 | return_resource(&(resources-> p_mem_head), hold_p_mem_node); | |
3007 | return rc; | |
3008 | } |