?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
posix-clock: Fix return code on the poll method's error path
[linux/fpc-iii.git] / drivers / pci / hotplug / cpqphp_core.c
bloba53084ddc1180df3c371c1483bec74e6f92c68fc
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 * Jan 12, 2003 - Added 66/100/133MHz PCI-X support,
28 * Torben Mathiasen <torben.mathiasen@hp.com>
29 */
30
31 #include <linux/module.h>
32 #include <linux/moduleparam.h>
33 #include <linux/kernel.h>
34 #include <linux/types.h>
35 #include <linux/proc_fs.h>
36 #include <linux/slab.h>
37 #include <linux/workqueue.h>
38 #include <linux/pci.h>
39 #include <linux/pci_hotplug.h>
40 #include <linux/init.h>
41 #include <linux/interrupt.h>
42
43 #include <asm/uaccess.h>
44
45 #include "cpqphp.h"
46 #include "cpqphp_nvram.h"
47
48
49 /* Global variables */
50 int cpqhp_debug;
51 int cpqhp_legacy_mode;
52 struct controller *cpqhp_ctrl_list; /* = NULL */
53 struct pci_func *cpqhp_slot_list[256];
54 struct irq_routing_table *cpqhp_routing_table;
55
56 /* local variables */
57 static void __iomem *smbios_table;
58 static void __iomem *smbios_start;
59 static void __iomem *cpqhp_rom_start;
60 static bool power_mode;
61 static bool debug;
62 static int initialized;
63
64 #define DRIVER_VERSION "0.9.8"
65 #define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>"
66 #define DRIVER_DESC "Compaq Hot Plug PCI Controller Driver"
67
68 MODULE_AUTHOR(DRIVER_AUTHOR);
69 MODULE_DESCRIPTION(DRIVER_DESC);
70 MODULE_LICENSE("GPL");
71
72 module_param(power_mode, bool, 0644);
73 MODULE_PARM_DESC(power_mode, "Power mode enabled or not");
74
75 module_param(debug, bool, 0644);
76 MODULE_PARM_DESC(debug, "Debugging mode enabled or not");
77
78 #define CPQHPC_MODULE_MINOR 208
79
80 static inline int is_slot64bit(struct slot *slot)
81 {
82 return (readb(slot->p_sm_slot + SMBIOS_SLOT_WIDTH) == 0x06) ? 1 : 0;
83 }
84
85 static inline int is_slot66mhz(struct slot *slot)
86 {
87 return (readb(slot->p_sm_slot + SMBIOS_SLOT_TYPE) == 0x0E) ? 1 : 0;
88 }
89
90 /**
91 * detect_SMBIOS_pointer - find the System Management BIOS Table in mem region.
92 * @begin: begin pointer for region to be scanned.
93 * @end: end pointer for region to be scanned.
94 *
95 * Returns pointer to the head of the SMBIOS tables (or %NULL).
96 */
97 static void __iomem *detect_SMBIOS_pointer(void __iomem *begin, void __iomem *end)
98 {
99 void __iomem *fp;
100 void __iomem *endp;
101 u8 temp1, temp2, temp3, temp4;
102 int status = 0;
103
104 endp = (end - sizeof(u32) + 1);
105
106 for (fp = begin; fp <= endp; fp += 16) {
107 temp1 = readb(fp);
108 temp2 = readb(fp+1);
109 temp3 = readb(fp+2);
110 temp4 = readb(fp+3);
111 if (temp1 == '_' &&
112 temp2 == 'S' &&
113 temp3 == 'M' &&
114 temp4 == '_') {
115 status = 1;
116 break;
117 }
118 }
119
120 if (!status)
121 fp = NULL;
122
123 dbg("Discovered SMBIOS Entry point at %p\n", fp);
124
125 return fp;
126 }
127
128 /**
129 * init_SERR - Initializes the per slot SERR generation.
130 * @ctrl: controller to use
131 *
132 * For unexpected switch opens
133 */
134 static int init_SERR(struct controller *ctrl)
135 {
136 u32 tempdword;
137 u32 number_of_slots;
138 u8 physical_slot;
139
140 if (!ctrl)
141 return 1;
142
143 tempdword = ctrl->first_slot;
144
145 number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F;
146 /* Loop through slots */
147 while (number_of_slots) {
148 physical_slot = tempdword;
149 writeb(0, ctrl->hpc_reg + SLOT_SERR);
150 tempdword++;
151 number_of_slots--;
152 }
153
154 return 0;
155 }
156
157 static int init_cpqhp_routing_table(void)
158 {
159 int len;
160
161 cpqhp_routing_table = pcibios_get_irq_routing_table();
162 if (cpqhp_routing_table == NULL)
163 return -ENOMEM;
164
165 len = cpqhp_routing_table_length();
166 if (len == 0) {
167 kfree(cpqhp_routing_table);
168 cpqhp_routing_table = NULL;
169 return -1;
170 }
171
172 return 0;
173 }
174
175 /* nice debugging output */
176 static void pci_print_IRQ_route(void)
177 {
178 int len;
179 int loop;
180 u8 tbus, tdevice, tslot;
181
182 len = cpqhp_routing_table_length();
183
184 dbg("bus dev func slot\n");
185 for (loop = 0; loop < len; ++loop) {
186 tbus = cpqhp_routing_table->slots[loop].bus;
187 tdevice = cpqhp_routing_table->slots[loop].devfn;
188 tslot = cpqhp_routing_table->slots[loop].slot;
189 dbg("%d %d %d %d\n", tbus, tdevice >> 3, tdevice & 0x7, tslot);
190
191 }
192 return;
193 }
194
195
196 /**
197 * get_subsequent_smbios_entry: get the next entry from bios table.
198 * @smbios_start: where to start in the SMBIOS table
199 * @smbios_table: location of the SMBIOS table
200 * @curr: %NULL or pointer to previously returned structure
201 *
202 * Gets the first entry if previous == NULL;
203 * otherwise, returns the next entry.
204 * Uses global SMBIOS Table pointer.
205 *
206 * Returns a pointer to an SMBIOS structure or NULL if none found.
207 */
208 static void __iomem *get_subsequent_smbios_entry(void __iomem *smbios_start,
209 void __iomem *smbios_table,
210 void __iomem *curr)
211 {
212 u8 bail = 0;
213 u8 previous_byte = 1;
214 void __iomem *p_temp;
215 void __iomem *p_max;
216
217 if (!smbios_table || !curr)
218 return NULL;
219
220 /* set p_max to the end of the table */
221 p_max = smbios_start + readw(smbios_table + ST_LENGTH);
222
223 p_temp = curr;
224 p_temp += readb(curr + SMBIOS_GENERIC_LENGTH);
225
226 while ((p_temp < p_max) && !bail) {
227 /* Look for the double NULL terminator
228 * The first condition is the previous byte
229 * and the second is the curr
230 */
231 if (!previous_byte && !(readb(p_temp)))
232 bail = 1;
233
234 previous_byte = readb(p_temp);
235 p_temp++;
236 }
237
238 if (p_temp < p_max)
239 return p_temp;
240 else
241 return NULL;
242 }
243
244
245 /**
246 * get_SMBIOS_entry - return the requested SMBIOS entry or %NULL
247 * @smbios_start: where to start in the SMBIOS table
248 * @smbios_table: location of the SMBIOS table
249 * @type: SMBIOS structure type to be returned
250 * @previous: %NULL or pointer to previously returned structure
251 *
252 * Gets the first entry of the specified type if previous == %NULL;
253 * Otherwise, returns the next entry of the given type.
254 * Uses global SMBIOS Table pointer.
255 * Uses get_subsequent_smbios_entry.
256 *
257 * Returns a pointer to an SMBIOS structure or %NULL if none found.
258 */
259 static void __iomem *get_SMBIOS_entry(void __iomem *smbios_start,
260 void __iomem *smbios_table,
261 u8 type,
262 void __iomem *previous)
263 {
264 if (!smbios_table)
265 return NULL;
266
267 if (!previous)
268 previous = smbios_start;
269 else
270 previous = get_subsequent_smbios_entry(smbios_start,
271 smbios_table, previous);
272
273 while (previous)
274 if (readb(previous + SMBIOS_GENERIC_TYPE) != type)
275 previous = get_subsequent_smbios_entry(smbios_start,
276 smbios_table, previous);
277 else
278 break;
279
280 return previous;
281 }
282
283 static void release_slot(struct hotplug_slot *hotplug_slot)
284 {
285 struct slot *slot = hotplug_slot->private;
286
287 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
288
289 kfree(slot->hotplug_slot->info);
290 kfree(slot->hotplug_slot);
291 kfree(slot);
292 }
293
294 static int ctrl_slot_cleanup (struct controller *ctrl)
295 {
296 struct slot *old_slot, *next_slot;
297
298 old_slot = ctrl->slot;
299 ctrl->slot = NULL;
300
301 while (old_slot) {
302 /* memory will be freed by the release_slot callback */
303 next_slot = old_slot->next;
304 pci_hp_deregister (old_slot->hotplug_slot);
305 old_slot = next_slot;
306 }
307
308 cpqhp_remove_debugfs_files(ctrl);
309
310 /* Free IRQ associated with hot plug device */
311 free_irq(ctrl->interrupt, ctrl);
312 /* Unmap the memory */
313 iounmap(ctrl->hpc_reg);
314 /* Finally reclaim PCI mem */
315 release_mem_region(pci_resource_start(ctrl->pci_dev, 0),
316 pci_resource_len(ctrl->pci_dev, 0));
317
318 return 0;
319 }
320
321
322 /**
323 * get_slot_mapping - determine logical slot mapping for PCI device
324 *
325 * Won't work for more than one PCI-PCI bridge in a slot.
326 *
327 * @bus_num - bus number of PCI device
328 * @dev_num - device number of PCI device
329 * @slot - Pointer to u8 where slot number will be returned
330 *
331 * Output: SUCCESS or FAILURE
332 */
333 static int
334 get_slot_mapping(struct pci_bus *bus, u8 bus_num, u8 dev_num, u8 *slot)
335 {
336 u32 work;
337 long len;
338 long loop;
339
340 u8 tbus, tdevice, tslot, bridgeSlot;
341
342 dbg("%s: %p, %d, %d, %p\n", __func__, bus, bus_num, dev_num, slot);
343
344 bridgeSlot = 0xFF;
345
346 len = cpqhp_routing_table_length();
347 for (loop = 0; loop < len; ++loop) {
348 tbus = cpqhp_routing_table->slots[loop].bus;
349 tdevice = cpqhp_routing_table->slots[loop].devfn >> 3;
350 tslot = cpqhp_routing_table->slots[loop].slot;
351
352 if ((tbus == bus_num) && (tdevice == dev_num)) {
353 *slot = tslot;
354 return 0;
355 } else {
356 /* Did not get a match on the target PCI device. Check
357 * if the current IRQ table entry is a PCI-to-PCI
358 * bridge device. If so, and it's secondary bus
359 * matches the bus number for the target device, I need
360 * to save the bridge's slot number. If I can not find
361 * an entry for the target device, I will have to
362 * assume it's on the other side of the bridge, and
363 * assign it the bridge's slot.
364 */
365 bus->number = tbus;
366 pci_bus_read_config_dword(bus, PCI_DEVFN(tdevice, 0),
367 PCI_CLASS_REVISION, &work);
368
369 if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) {
370 pci_bus_read_config_dword(bus,
371 PCI_DEVFN(tdevice, 0),
372 PCI_PRIMARY_BUS, &work);
373 // See if bridge's secondary bus matches target bus.
374 if (((work >> 8) & 0x000000FF) == (long) bus_num)
375 bridgeSlot = tslot;
376 }
377 }
378
379 }
380
381 /* If we got here, we didn't find an entry in the IRQ mapping table for
382 * the target PCI device. If we did determine that the target device
383 * is on the other side of a PCI-to-PCI bridge, return the slot number
384 * for the bridge.
385 */
386 if (bridgeSlot != 0xFF) {
387 *slot = bridgeSlot;
388 return 0;
389 }
390 /* Couldn't find an entry in the routing table for this PCI device */
391 return -1;
392 }
393
394
395 /**
396 * cpqhp_set_attention_status - Turns the Amber LED for a slot on or off
397 * @ctrl: struct controller to use
398 * @func: PCI device/function info
399 * @status: LED control flag: 1 = LED on, 0 = LED off
400 */
401 static int
402 cpqhp_set_attention_status(struct controller *ctrl, struct pci_func *func,
403 u32 status)
404 {
405 u8 hp_slot;
406
407 if (func == NULL)
408 return 1;
409
410 hp_slot = func->device - ctrl->slot_device_offset;
411
412 /* Wait for exclusive access to hardware */
413 mutex_lock(&ctrl->crit_sect);
414
415 if (status == 1)
416 amber_LED_on (ctrl, hp_slot);
417 else if (status == 0)
418 amber_LED_off (ctrl, hp_slot);
419 else {
420 /* Done with exclusive hardware access */
421 mutex_unlock(&ctrl->crit_sect);
422 return 1;
423 }
424
425 set_SOGO(ctrl);
426
427 /* Wait for SOBS to be unset */
428 wait_for_ctrl_irq (ctrl);
429
430 /* Done with exclusive hardware access */
431 mutex_unlock(&ctrl->crit_sect);
432
433 return 0;
434 }
435
436
437 /**
438 * set_attention_status - Turns the Amber LED for a slot on or off
439 * @hotplug_slot: slot to change LED on
440 * @status: LED control flag
441 */
442 static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
443 {
444 struct pci_func *slot_func;
445 struct slot *slot = hotplug_slot->private;
446 struct controller *ctrl = slot->ctrl;
447 u8 bus;
448 u8 devfn;
449 u8 device;
450 u8 function;
451
452 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
453
454 if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1)
455 return -ENODEV;
456
457 device = devfn >> 3;
458 function = devfn & 0x7;
459 dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function);
460
461 slot_func = cpqhp_slot_find(bus, device, function);
462 if (!slot_func)
463 return -ENODEV;
464
465 return cpqhp_set_attention_status(ctrl, slot_func, status);
466 }
467
468
469 static int process_SI(struct hotplug_slot *hotplug_slot)
470 {
471 struct pci_func *slot_func;
472 struct slot *slot = hotplug_slot->private;
473 struct controller *ctrl = slot->ctrl;
474 u8 bus;
475 u8 devfn;
476 u8 device;
477 u8 function;
478
479 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
480
481 if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1)
482 return -ENODEV;
483
484 device = devfn >> 3;
485 function = devfn & 0x7;
486 dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function);
487
488 slot_func = cpqhp_slot_find(bus, device, function);
489 if (!slot_func)
490 return -ENODEV;
491
492 slot_func->bus = bus;
493 slot_func->device = device;
494 slot_func->function = function;
495 slot_func->configured = 0;
496 dbg("board_added(%p, %p)\n", slot_func, ctrl);
497 return cpqhp_process_SI(ctrl, slot_func);
498 }
499
500
501 static int process_SS(struct hotplug_slot *hotplug_slot)
502 {
503 struct pci_func *slot_func;
504 struct slot *slot = hotplug_slot->private;
505 struct controller *ctrl = slot->ctrl;
506 u8 bus;
507 u8 devfn;
508 u8 device;
509 u8 function;
510
511 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
512
513 if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1)
514 return -ENODEV;
515
516 device = devfn >> 3;
517 function = devfn & 0x7;
518 dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function);
519
520 slot_func = cpqhp_slot_find(bus, device, function);
521 if (!slot_func)
522 return -ENODEV;
523
524 dbg("In %s, slot_func = %p, ctrl = %p\n", __func__, slot_func, ctrl);
525 return cpqhp_process_SS(ctrl, slot_func);
526 }
527
528
529 static int hardware_test(struct hotplug_slot *hotplug_slot, u32 value)
530 {
531 struct slot *slot = hotplug_slot->private;
532 struct controller *ctrl = slot->ctrl;
533
534 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
535
536 return cpqhp_hardware_test(ctrl, value);
537 }
538
539
540 static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
541 {
542 struct slot *slot = hotplug_slot->private;
543 struct controller *ctrl = slot->ctrl;
544
545 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
546
547 *value = get_slot_enabled(ctrl, slot);
548 return 0;
549 }
550
551 static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
552 {
553 struct slot *slot = hotplug_slot->private;
554 struct controller *ctrl = slot->ctrl;
555
556 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
557
558 *value = cpq_get_attention_status(ctrl, slot);
559 return 0;
560 }
561
562 static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
563 {
564 struct slot *slot = hotplug_slot->private;
565 struct controller *ctrl = slot->ctrl;
566
567 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
568
569 *value = cpq_get_latch_status(ctrl, slot);
570
571 return 0;
572 }
573
574 static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
575 {
576 struct slot *slot = hotplug_slot->private;
577 struct controller *ctrl = slot->ctrl;
578
579 dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
580
581 *value = get_presence_status(ctrl, slot);
582
583 return 0;
584 }
585
586 static struct hotplug_slot_ops cpqphp_hotplug_slot_ops = {
587 .set_attention_status = set_attention_status,
588 .enable_slot = process_SI,
589 .disable_slot = process_SS,
590 .hardware_test = hardware_test,
591 .get_power_status = get_power_status,
592 .get_attention_status = get_attention_status,
593 .get_latch_status = get_latch_status,
594 .get_adapter_status = get_adapter_status,
595 };
596
597 #define SLOT_NAME_SIZE 10
598
599 static int ctrl_slot_setup(struct controller *ctrl,
600 void __iomem *smbios_start,
601 void __iomem *smbios_table)
602 {
603 struct slot *slot;
604 struct hotplug_slot *hotplug_slot;
605 struct hotplug_slot_info *hotplug_slot_info;
606 struct pci_bus *bus = ctrl->pci_bus;
607 u8 number_of_slots;
608 u8 slot_device;
609 u8 slot_number;
610 u8 ctrl_slot;
611 u32 tempdword;
612 char name[SLOT_NAME_SIZE];
613 void __iomem *slot_entry= NULL;
614 int result;
615
616 dbg("%s\n", __func__);
617
618 tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
619
620 number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F;
621 slot_device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4;
622 slot_number = ctrl->first_slot;
623
624 while (number_of_slots) {
625 slot = kzalloc(sizeof(*slot), GFP_KERNEL);
626 if (!slot) {
627 result = -ENOMEM;
628 goto error;
629 }
630
631 slot->hotplug_slot = kzalloc(sizeof(*(slot->hotplug_slot)),
632 GFP_KERNEL);
633 if (!slot->hotplug_slot) {
634 result = -ENOMEM;
635 goto error_slot;
636 }
637 hotplug_slot = slot->hotplug_slot;
638
639 hotplug_slot->info = kzalloc(sizeof(*(hotplug_slot->info)),
640 GFP_KERNEL);
641 if (!hotplug_slot->info) {
642 result = -ENOMEM;
643 goto error_hpslot;
644 }
645 hotplug_slot_info = hotplug_slot->info;
646
647 slot->ctrl = ctrl;
648 slot->bus = ctrl->bus;
649 slot->device = slot_device;
650 slot->number = slot_number;
651 dbg("slot->number = %u\n", slot->number);
652
653 slot_entry = get_SMBIOS_entry(smbios_start, smbios_table, 9,
654 slot_entry);
655
656 while (slot_entry && (readw(slot_entry + SMBIOS_SLOT_NUMBER) !=
657 slot->number)) {
658 slot_entry = get_SMBIOS_entry(smbios_start,
659 smbios_table, 9, slot_entry);
660 }
661
662 slot->p_sm_slot = slot_entry;
663
664 init_timer(&slot->task_event);
665 slot->task_event.expires = jiffies + 5 * HZ;
666 slot->task_event.function = cpqhp_pushbutton_thread;
667
668 /*FIXME: these capabilities aren't used but if they are
669 * they need to be correctly implemented
670 */
671 slot->capabilities |= PCISLOT_REPLACE_SUPPORTED;
672 slot->capabilities |= PCISLOT_INTERLOCK_SUPPORTED;
673
674 if (is_slot64bit(slot))
675 slot->capabilities |= PCISLOT_64_BIT_SUPPORTED;
676 if (is_slot66mhz(slot))
677 slot->capabilities |= PCISLOT_66_MHZ_SUPPORTED;
678 if (bus->cur_bus_speed == PCI_SPEED_66MHz)
679 slot->capabilities |= PCISLOT_66_MHZ_OPERATION;
680
681 ctrl_slot =
682 slot_device - (readb(ctrl->hpc_reg + SLOT_MASK) >> 4);
683
684 /* Check presence */
685 slot->capabilities |=
686 ((((~tempdword) >> 23) |
687 ((~tempdword) >> 15)) >> ctrl_slot) & 0x02;
688 /* Check the switch state */
689 slot->capabilities |=
690 ((~tempdword & 0xFF) >> ctrl_slot) & 0x01;
691 /* Check the slot enable */
692 slot->capabilities |=
693 ((read_slot_enable(ctrl) << 2) >> ctrl_slot) & 0x04;
694
695 /* register this slot with the hotplug pci core */
696 hotplug_slot->release = &release_slot;
697 hotplug_slot->private = slot;
698 snprintf(name, SLOT_NAME_SIZE, "%u", slot->number);
699 hotplug_slot->ops = &cpqphp_hotplug_slot_ops;
700
701 hotplug_slot_info->power_status = get_slot_enabled(ctrl, slot);
702 hotplug_slot_info->attention_status =
703 cpq_get_attention_status(ctrl, slot);
704 hotplug_slot_info->latch_status =
705 cpq_get_latch_status(ctrl, slot);
706 hotplug_slot_info->adapter_status =
707 get_presence_status(ctrl, slot);
708
709 dbg("registering bus %d, dev %d, number %d, ctrl->slot_device_offset %d, slot %d\n",
710 slot->bus, slot->device,
711 slot->number, ctrl->slot_device_offset,
712 slot_number);
713 result = pci_hp_register(hotplug_slot,
714 ctrl->pci_dev->bus,
715 slot->device,
716 name);
717 if (result) {
718 err("pci_hp_register failed with error %d\n", result);
719 goto error_info;
720 }
721
722 slot->next = ctrl->slot;
723 ctrl->slot = slot;
724
725 number_of_slots--;
726 slot_device++;
727 slot_number++;
728 }
729
730 return 0;
731 error_info:
732 kfree(hotplug_slot_info);
733 error_hpslot:
734 kfree(hotplug_slot);
735 error_slot:
736 kfree(slot);
737 error:
738 return result;
739 }
740
741 static int one_time_init(void)
742 {
743 int loop;
744 int retval = 0;
745
746 if (initialized)
747 return 0;
748
749 power_mode = 0;
750
751 retval = init_cpqhp_routing_table();
752 if (retval)
753 goto error;
754
755 if (cpqhp_debug)
756 pci_print_IRQ_route();
757
758 dbg("Initialize + Start the notification mechanism \n");
759
760 retval = cpqhp_event_start_thread();
761 if (retval)
762 goto error;
763
764 dbg("Initialize slot lists\n");
765 for (loop = 0; loop < 256; loop++)
766 cpqhp_slot_list[loop] = NULL;
767
768 /* FIXME: We also need to hook the NMI handler eventually.
769 * this also needs to be worked with Christoph
770 * register_NMI_handler();
771 */
772 /* Map rom address */
773 cpqhp_rom_start = ioremap(ROM_PHY_ADDR, ROM_PHY_LEN);
774 if (!cpqhp_rom_start) {
775 err ("Could not ioremap memory region for ROM\n");
776 retval = -EIO;
777 goto error;
778 }
779
780 /* Now, map the int15 entry point if we are on compaq specific
781 * hardware
782 */
783 compaq_nvram_init(cpqhp_rom_start);
784
785 /* Map smbios table entry point structure */
786 smbios_table = detect_SMBIOS_pointer(cpqhp_rom_start,
787 cpqhp_rom_start + ROM_PHY_LEN);
788 if (!smbios_table) {
789 err ("Could not find the SMBIOS pointer in memory\n");
790 retval = -EIO;
791 goto error_rom_start;
792 }
793
794 smbios_start = ioremap(readl(smbios_table + ST_ADDRESS),
795 readw(smbios_table + ST_LENGTH));
796 if (!smbios_start) {
797 err ("Could not ioremap memory region taken from SMBIOS values\n");
798 retval = -EIO;
799 goto error_smbios_start;
800 }
801
802 initialized = 1;
803
804 return retval;
805
806 error_smbios_start:
807 iounmap(smbios_start);
808 error_rom_start:
809 iounmap(cpqhp_rom_start);
810 error:
811 return retval;
812 }
813
814 static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
815 {
816 u8 num_of_slots = 0;
817 u8 hp_slot = 0;
818 u8 device;
819 u8 bus_cap;
820 u16 temp_word;
821 u16 vendor_id;
822 u16 subsystem_vid;
823 u16 subsystem_deviceid;
824 u32 rc;
825 struct controller *ctrl;
826 struct pci_func *func;
827 struct pci_bus *bus;
828 int err;
829
830 err = pci_enable_device(pdev);
831 if (err) {
832 printk(KERN_ERR MY_NAME ": cannot enable PCI device %s (%d)\n",
833 pci_name(pdev), err);
834 return err;
835 }
836
837 bus = pdev->subordinate;
838 if (!bus) {
839 dev_notice(&pdev->dev, "the device is not a bridge, skipping\n");
840 rc = -ENODEV;
841 goto err_disable_device;
842 }
843
844 /* Need to read VID early b/c it's used to differentiate CPQ and INTC
845 * discovery
846 */
847 vendor_id = pdev->vendor;
848 if ((vendor_id != PCI_VENDOR_ID_COMPAQ) &&
849 (vendor_id != PCI_VENDOR_ID_INTEL)) {
850 err(msg_HPC_non_compaq_or_intel);
851 rc = -ENODEV;
852 goto err_disable_device;
853 }
854 dbg("Vendor ID: %x\n", vendor_id);
855
856 dbg("revision: %d\n", pdev->revision);
857 if ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!pdev->revision)) {
858 err(msg_HPC_rev_error);
859 rc = -ENODEV;
860 goto err_disable_device;
861 }
862
863 /* Check for the proper subsystem IDs
864 * Intel uses a different SSID programming model than Compaq.
865 * For Intel, each SSID bit identifies a PHP capability.
866 * Also Intel HPCs may have RID=0.
867 */
868 if ((pdev->revision <= 2) && (vendor_id != PCI_VENDOR_ID_INTEL)) {
869 err(msg_HPC_not_supported);
870 return -ENODEV;
871 }
872
873 /* TODO: This code can be made to support non-Compaq or Intel
874 * subsystem IDs
875 */
876 subsystem_vid = pdev->subsystem_vendor;
877 dbg("Subsystem Vendor ID: %x\n", subsystem_vid);
878 if ((subsystem_vid != PCI_VENDOR_ID_COMPAQ) && (subsystem_vid != PCI_VENDOR_ID_INTEL)) {
879 err(msg_HPC_non_compaq_or_intel);
880 rc = -ENODEV;
881 goto err_disable_device;
882 }
883
884 ctrl = kzalloc(sizeof(struct controller), GFP_KERNEL);
885 if (!ctrl) {
886 err("%s : out of memory\n", __func__);
887 rc = -ENOMEM;
888 goto err_disable_device;
889 }
890
891 subsystem_deviceid = pdev->subsystem_device;
892
893 info("Hot Plug Subsystem Device ID: %x\n", subsystem_deviceid);
894
895 /* Set Vendor ID, so it can be accessed later from other
896 * functions
897 */
898 ctrl->vendor_id = vendor_id;
899
900 switch (subsystem_vid) {
901 case PCI_VENDOR_ID_COMPAQ:
902 if (pdev->revision >= 0x13) { /* CIOBX */
903 ctrl->push_flag = 1;
904 ctrl->slot_switch_type = 1;
905 ctrl->push_button = 1;
906 ctrl->pci_config_space = 1;
907 ctrl->defeature_PHP = 1;
908 ctrl->pcix_support = 1;
909 ctrl->pcix_speed_capability = 1;
910 pci_read_config_byte(pdev, 0x41, &bus_cap);
911 if (bus_cap & 0x80) {
912 dbg("bus max supports 133MHz PCI-X\n");
913 bus->max_bus_speed = PCI_SPEED_133MHz_PCIX;
914 break;
915 }
916 if (bus_cap & 0x40) {
917 dbg("bus max supports 100MHz PCI-X\n");
918 bus->max_bus_speed = PCI_SPEED_100MHz_PCIX;
919 break;
920 }
921 if (bus_cap & 0x20) {
922 dbg("bus max supports 66MHz PCI-X\n");
923 bus->max_bus_speed = PCI_SPEED_66MHz_PCIX;
924 break;
925 }
926 if (bus_cap & 0x10) {
927 dbg("bus max supports 66MHz PCI\n");
928 bus->max_bus_speed = PCI_SPEED_66MHz;
929 break;
930 }
931
932 break;
933 }
934
935 switch (subsystem_deviceid) {
936 case PCI_SUB_HPC_ID:
937 /* Original 6500/7000 implementation */
938 ctrl->slot_switch_type = 1;
939 bus->max_bus_speed = PCI_SPEED_33MHz;
940 ctrl->push_button = 0;
941 ctrl->pci_config_space = 1;
942 ctrl->defeature_PHP = 1;
943 ctrl->pcix_support = 0;
944 ctrl->pcix_speed_capability = 0;
945 break;
946 case PCI_SUB_HPC_ID2:
947 /* First Pushbutton implementation */
948 ctrl->push_flag = 1;
949 ctrl->slot_switch_type = 1;
950 bus->max_bus_speed = PCI_SPEED_33MHz;
951 ctrl->push_button = 1;
952 ctrl->pci_config_space = 1;
953 ctrl->defeature_PHP = 1;
954 ctrl->pcix_support = 0;
955 ctrl->pcix_speed_capability = 0;
956 break;
957 case PCI_SUB_HPC_ID_INTC:
958 /* Third party (6500/7000) */
959 ctrl->slot_switch_type = 1;
960 bus->max_bus_speed = PCI_SPEED_33MHz;
961 ctrl->push_button = 0;
962 ctrl->pci_config_space = 1;
963 ctrl->defeature_PHP = 1;
964 ctrl->pcix_support = 0;
965 ctrl->pcix_speed_capability = 0;
966 break;
967 case PCI_SUB_HPC_ID3:
968 /* First 66 Mhz implementation */
969 ctrl->push_flag = 1;
970 ctrl->slot_switch_type = 1;
971 bus->max_bus_speed = PCI_SPEED_66MHz;
972 ctrl->push_button = 1;
973 ctrl->pci_config_space = 1;
974 ctrl->defeature_PHP = 1;
975 ctrl->pcix_support = 0;
976 ctrl->pcix_speed_capability = 0;
977 break;
978 case PCI_SUB_HPC_ID4:
979 /* First PCI-X implementation, 100MHz */
980 ctrl->push_flag = 1;
981 ctrl->slot_switch_type = 1;
982 bus->max_bus_speed = PCI_SPEED_100MHz_PCIX;
983 ctrl->push_button = 1;
984 ctrl->pci_config_space = 1;
985 ctrl->defeature_PHP = 1;
986 ctrl->pcix_support = 1;
987 ctrl->pcix_speed_capability = 0;
988 break;
989 default:
990 err(msg_HPC_not_supported);
991 rc = -ENODEV;
992 goto err_free_ctrl;
993 }
994 break;
995
996 case PCI_VENDOR_ID_INTEL:
997 /* Check for speed capability (0=33, 1=66) */
998 if (subsystem_deviceid & 0x0001)
999 bus->max_bus_speed = PCI_SPEED_66MHz;
1000 else
1001 bus->max_bus_speed = PCI_SPEED_33MHz;
1002
1003 /* Check for push button */
1004 if (subsystem_deviceid & 0x0002)
1005 ctrl->push_button = 0;
1006 else
1007 ctrl->push_button = 1;
1008
1009 /* Check for slot switch type (0=mechanical, 1=not mechanical) */
1010 if (subsystem_deviceid & 0x0004)
1011 ctrl->slot_switch_type = 0;
1012 else
1013 ctrl->slot_switch_type = 1;
1014
1015 /* PHP Status (0=De-feature PHP, 1=Normal operation) */
1016 if (subsystem_deviceid & 0x0008)
1017 ctrl->defeature_PHP = 1; /* PHP supported */
1018 else
1019 ctrl->defeature_PHP = 0; /* PHP not supported */
1020
1021 /* Alternate Base Address Register Interface
1022 * (0=not supported, 1=supported)
1023 */
1024 if (subsystem_deviceid & 0x0010)
1025 ctrl->alternate_base_address = 1;
1026 else
1027 ctrl->alternate_base_address = 0;
1028
1029 /* PCI Config Space Index (0=not supported, 1=supported) */
1030 if (subsystem_deviceid & 0x0020)
1031 ctrl->pci_config_space = 1;
1032 else
1033 ctrl->pci_config_space = 0;
1034
1035 /* PCI-X support */
1036 if (subsystem_deviceid & 0x0080) {
1037 ctrl->pcix_support = 1;
1038 if (subsystem_deviceid & 0x0040)
1039 /* 133MHz PCI-X if bit 7 is 1 */
1040 ctrl->pcix_speed_capability = 1;
1041 else
1042 /* 100MHz PCI-X if bit 7 is 1 and bit 0 is 0, */
1043 /* 66MHz PCI-X if bit 7 is 1 and bit 0 is 1 */
1044 ctrl->pcix_speed_capability = 0;
1045 } else {
1046 /* Conventional PCI */
1047 ctrl->pcix_support = 0;
1048 ctrl->pcix_speed_capability = 0;
1049 }
1050 break;
1051
1052 default:
1053 err(msg_HPC_not_supported);
1054 rc = -ENODEV;
1055 goto err_free_ctrl;
1056 }
1057
1058 /* Tell the user that we found one. */
1059 info("Initializing the PCI hot plug controller residing on PCI bus %d\n",
1060 pdev->bus->number);
1061
1062 dbg("Hotplug controller capabilities:\n");
1063 dbg(" speed_capability %d\n", bus->max_bus_speed);
1064 dbg(" slot_switch_type %s\n", ctrl->slot_switch_type ?
1065 "switch present" : "no switch");
1066 dbg(" defeature_PHP %s\n", ctrl->defeature_PHP ?
1067 "PHP supported" : "PHP not supported");
1068 dbg(" alternate_base_address %s\n", ctrl->alternate_base_address ?
1069 "supported" : "not supported");
1070 dbg(" pci_config_space %s\n", ctrl->pci_config_space ?
1071 "supported" : "not supported");
1072 dbg(" pcix_speed_capability %s\n", ctrl->pcix_speed_capability ?
1073 "supported" : "not supported");
1074 dbg(" pcix_support %s\n", ctrl->pcix_support ?
1075 "supported" : "not supported");
1076
1077 ctrl->pci_dev = pdev;
1078 pci_set_drvdata(pdev, ctrl);
1079
1080 /* make our own copy of the pci bus structure,
1081 * as we like tweaking it a lot */
1082 ctrl->pci_bus = kmemdup(pdev->bus, sizeof(*ctrl->pci_bus), GFP_KERNEL);
1083 if (!ctrl->pci_bus) {
1084 err("out of memory\n");
1085 rc = -ENOMEM;
1086 goto err_free_ctrl;
1087 }
1088
1089 ctrl->bus = pdev->bus->number;
1090 ctrl->rev = pdev->revision;
1091 dbg("bus device function rev: %d %d %d %d\n", ctrl->bus,
1092 PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), ctrl->rev);
1093
1094 mutex_init(&ctrl->crit_sect);
1095 init_waitqueue_head(&ctrl->queue);
1096
1097 /* initialize our threads if they haven't already been started up */
1098 rc = one_time_init();
1099 if (rc)
1100 goto err_free_bus;
1101
1102 dbg("pdev = %p\n", pdev);
1103 dbg("pci resource start %llx\n", (unsigned long long)pci_resource_start(pdev, 0));
1104 dbg("pci resource len %llx\n", (unsigned long long)pci_resource_len(pdev, 0));
1105
1106 if (!request_mem_region(pci_resource_start(pdev, 0),
1107 pci_resource_len(pdev, 0), MY_NAME)) {
1108 err("cannot reserve MMIO region\n");
1109 rc = -ENOMEM;
1110 goto err_free_bus;
1111 }
1112
1113 ctrl->hpc_reg = ioremap(pci_resource_start(pdev, 0),
1114 pci_resource_len(pdev, 0));
1115 if (!ctrl->hpc_reg) {
1116 err("cannot remap MMIO region %llx @ %llx\n",
1117 (unsigned long long)pci_resource_len(pdev, 0),
1118 (unsigned long long)pci_resource_start(pdev, 0));
1119 rc = -ENODEV;
1120 goto err_free_mem_region;
1121 }
1122
1123 /* Check for 66Mhz operation */
1124 bus->cur_bus_speed = get_controller_speed(ctrl);
1125
1126
1127 /********************************************************
1128 *
1129 * Save configuration headers for this and
1130 * subordinate PCI buses
1131 *
1132 ********************************************************/
1133
1134 /* find the physical slot number of the first hot plug slot */
1135
1136 /* Get slot won't work for devices behind bridges, but
1137 * in this case it will always be called for the "base"
1138 * bus/dev/func of a slot.
1139 * CS: this is leveraging the PCIIRQ routing code from the kernel
1140 * (pci-pc.c: get_irq_routing_table) */
1141 rc = get_slot_mapping(ctrl->pci_bus, pdev->bus->number,
1142 (readb(ctrl->hpc_reg + SLOT_MASK) >> 4),
1143 &(ctrl->first_slot));
1144 dbg("get_slot_mapping: first_slot = %d, returned = %d\n",
1145 ctrl->first_slot, rc);
1146 if (rc) {
1147 err(msg_initialization_err, rc);
1148 goto err_iounmap;
1149 }
1150
1151 /* Store PCI Config Space for all devices on this bus */
1152 rc = cpqhp_save_config(ctrl, ctrl->bus, readb(ctrl->hpc_reg + SLOT_MASK));
1153 if (rc) {
1154 err("%s: unable to save PCI configuration data, error %d\n",
1155 __func__, rc);
1156 goto err_iounmap;
1157 }
1158
1159 /*
1160 * Get IO, memory, and IRQ resources for new devices
1161 */
1162 /* The next line is required for cpqhp_find_available_resources */
1163 ctrl->interrupt = pdev->irq;
1164 if (ctrl->interrupt < 0x10) {
1165 cpqhp_legacy_mode = 1;
1166 dbg("System seems to be configured for Full Table Mapped MPS mode\n");
1167 }
1168
1169 ctrl->cfgspc_irq = 0;
1170 pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &ctrl->cfgspc_irq);
1171
1172 rc = cpqhp_find_available_resources(ctrl, cpqhp_rom_start);
1173 ctrl->add_support = !rc;
1174 if (rc) {
1175 dbg("cpqhp_find_available_resources = 0x%x\n", rc);
1176 err("unable to locate PCI configuration resources for hot plug add.\n");
1177 goto err_iounmap;
1178 }
1179
1180 /*
1181 * Finish setting up the hot plug ctrl device
1182 */
1183 ctrl->slot_device_offset = readb(ctrl->hpc_reg + SLOT_MASK) >> 4;
1184 dbg("NumSlots %d \n", ctrl->slot_device_offset);
1185
1186 ctrl->next_event = 0;
1187
1188 /* Setup the slot information structures */
1189 rc = ctrl_slot_setup(ctrl, smbios_start, smbios_table);
1190 if (rc) {
1191 err(msg_initialization_err, 6);
1192 err("%s: unable to save PCI configuration data, error %d\n",
1193 __func__, rc);
1194 goto err_iounmap;
1195 }
1196
1197 /* Mask all general input interrupts */
1198 writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_MASK);
1199
1200 /* set up the interrupt */
1201 dbg("HPC interrupt = %d \n", ctrl->interrupt);
1202 if (request_irq(ctrl->interrupt, cpqhp_ctrl_intr,
1203 IRQF_SHARED, MY_NAME, ctrl)) {
1204 err("Can't get irq %d for the hotplug pci controller\n",
1205 ctrl->interrupt);
1206 rc = -ENODEV;
1207 goto err_iounmap;
1208 }
1209
1210 /* Enable Shift Out interrupt and clear it, also enable SERR on power
1211 * fault
1212 */
1213 temp_word = readw(ctrl->hpc_reg + MISC);
1214 temp_word |= 0x4006;
1215 writew(temp_word, ctrl->hpc_reg + MISC);
1216
1217 /* Changed 05/05/97 to clear all interrupts at start */
1218 writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_INPUT_CLEAR);
1219
1220 ctrl->ctrl_int_comp = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
1221
1222 writel(0x0L, ctrl->hpc_reg + INT_MASK);
1223
1224 if (!cpqhp_ctrl_list) {
1225 cpqhp_ctrl_list = ctrl;
1226 ctrl->next = NULL;
1227 } else {
1228 ctrl->next = cpqhp_ctrl_list;
1229 cpqhp_ctrl_list = ctrl;
1230 }
1231
1232 /* turn off empty slots here unless command line option "ON" set
1233 * Wait for exclusive access to hardware
1234 */
1235 mutex_lock(&ctrl->crit_sect);
1236
1237 num_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F;
1238
1239 /* find first device number for the ctrl */
1240 device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4;
1241
1242 while (num_of_slots) {
1243 dbg("num_of_slots: %d\n", num_of_slots);
1244 func = cpqhp_slot_find(ctrl->bus, device, 0);
1245 if (!func)
1246 break;
1247
1248 hp_slot = func->device - ctrl->slot_device_offset;
1249 dbg("hp_slot: %d\n", hp_slot);
1250
1251 /* We have to save the presence info for these slots */
1252 temp_word = ctrl->ctrl_int_comp >> 16;
1253 func->presence_save = (temp_word >> hp_slot) & 0x01;
1254 func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02;
1255
1256 if (ctrl->ctrl_int_comp & (0x1L << hp_slot))
1257 func->switch_save = 0;
1258 else
1259 func->switch_save = 0x10;
1260
1261 if (!power_mode)
1262 if (!func->is_a_board) {
1263 green_LED_off(ctrl, hp_slot);
1264 slot_disable(ctrl, hp_slot);
1265 }
1266
1267 device++;
1268 num_of_slots--;
1269 }
1270
1271 if (!power_mode) {
1272 set_SOGO(ctrl);
1273 /* Wait for SOBS to be unset */
1274 wait_for_ctrl_irq(ctrl);
1275 }
1276
1277 rc = init_SERR(ctrl);
1278 if (rc) {
1279 err("init_SERR failed\n");
1280 mutex_unlock(&ctrl->crit_sect);
1281 goto err_free_irq;
1282 }
1283
1284 /* Done with exclusive hardware access */
1285 mutex_unlock(&ctrl->crit_sect);
1286
1287 cpqhp_create_debugfs_files(ctrl);
1288
1289 return 0;
1290
1291 err_free_irq:
1292 free_irq(ctrl->interrupt, ctrl);
1293 err_iounmap:
1294 iounmap(ctrl->hpc_reg);
1295 err_free_mem_region:
1296 release_mem_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
1297 err_free_bus:
1298 kfree(ctrl->pci_bus);
1299 err_free_ctrl:
1300 kfree(ctrl);
1301 err_disable_device:
1302 pci_disable_device(pdev);
1303 return rc;
1304 }
1305
1306 static void __exit unload_cpqphpd(void)
1307 {
1308 struct pci_func *next;
1309 struct pci_func *TempSlot;
1310 int loop;
1311 u32 rc;
1312 struct controller *ctrl;
1313 struct controller *tctrl;
1314 struct pci_resource *res;
1315 struct pci_resource *tres;
1316
1317 rc = compaq_nvram_store(cpqhp_rom_start);
1318
1319 ctrl = cpqhp_ctrl_list;
1320
1321 while (ctrl) {
1322 if (ctrl->hpc_reg) {
1323 u16 misc;
1324 rc = read_slot_enable (ctrl);
1325
1326 writeb(0, ctrl->hpc_reg + SLOT_SERR);
1327 writel(0xFFFFFFC0L | ~rc, ctrl->hpc_reg + INT_MASK);
1328
1329 misc = readw(ctrl->hpc_reg + MISC);
1330 misc &= 0xFFFD;
1331 writew(misc, ctrl->hpc_reg + MISC);
1332 }
1333
1334 ctrl_slot_cleanup(ctrl);
1335
1336 res = ctrl->io_head;
1337 while (res) {
1338 tres = res;
1339 res = res->next;
1340 kfree(tres);
1341 }
1342
1343 res = ctrl->mem_head;
1344 while (res) {
1345 tres = res;
1346 res = res->next;
1347 kfree(tres);
1348 }
1349
1350 res = ctrl->p_mem_head;
1351 while (res) {
1352 tres = res;
1353 res = res->next;
1354 kfree(tres);
1355 }
1356
1357 res = ctrl->bus_head;
1358 while (res) {
1359 tres = res;
1360 res = res->next;
1361 kfree(tres);
1362 }
1363
1364 kfree (ctrl->pci_bus);
1365
1366 tctrl = ctrl;
1367 ctrl = ctrl->next;
1368 kfree(tctrl);
1369 }
1370
1371 for (loop = 0; loop < 256; loop++) {
1372 next = cpqhp_slot_list[loop];
1373 while (next != NULL) {
1374 res = next->io_head;
1375 while (res) {
1376 tres = res;
1377 res = res->next;
1378 kfree(tres);
1379 }
1380
1381 res = next->mem_head;
1382 while (res) {
1383 tres = res;
1384 res = res->next;
1385 kfree(tres);
1386 }
1387
1388 res = next->p_mem_head;
1389 while (res) {
1390 tres = res;
1391 res = res->next;
1392 kfree(tres);
1393 }
1394
1395 res = next->bus_head;
1396 while (res) {
1397 tres = res;
1398 res = res->next;
1399 kfree(tres);
1400 }
1401
1402 TempSlot = next;
1403 next = next->next;
1404 kfree(TempSlot);
1405 }
1406 }
1407
1408 /* Stop the notification mechanism */
1409 if (initialized)
1410 cpqhp_event_stop_thread();
1411
1412 /* unmap the rom address */
1413 if (cpqhp_rom_start)
1414 iounmap(cpqhp_rom_start);
1415 if (smbios_start)
1416 iounmap(smbios_start);
1417 }
1418
1419 static struct pci_device_id hpcd_pci_tbl[] = {
1420 {
1421 /* handle any PCI Hotplug controller */
1422 .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00),
1423 .class_mask = ~0,
1424
1425 /* no matter who makes it */
1426 .vendor = PCI_ANY_ID,
1427 .device = PCI_ANY_ID,
1428 .subvendor = PCI_ANY_ID,
1429 .subdevice = PCI_ANY_ID,
1430
1431 }, { /* end: all zeroes */ }
1432 };
1433
1434 MODULE_DEVICE_TABLE(pci, hpcd_pci_tbl);
1435
1436 static struct pci_driver cpqhpc_driver = {
1437 .name = "compaq_pci_hotplug",
1438 .id_table = hpcd_pci_tbl,
1439 .probe = cpqhpc_probe,
1440 /* remove: cpqhpc_remove_one, */
1441 };
1442
1443 static int __init cpqhpc_init(void)
1444 {
1445 int result;
1446
1447 cpqhp_debug = debug;
1448
1449 info (DRIVER_DESC " version: " DRIVER_VERSION "\n");
1450 cpqhp_initialize_debugfs();
1451 result = pci_register_driver(&cpqhpc_driver);
1452 dbg("pci_register_driver = %d\n", result);
1453 return result;
1454 }
1455
1456 static void __exit cpqhpc_cleanup(void)
1457 {
1458 dbg("unload_cpqphpd()\n");
1459 unload_cpqphpd();
1460
1461 dbg("pci_unregister_driver\n");
1462 pci_unregister_driver(&cpqhpc_driver);
1463 cpqhp_shutdown_debugfs();
1464 }
1465
1466 module_init(cpqhpc_init);
1467 module_exit(cpqhpc_cleanup);
Linux with added FPC-III support