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30#include <linux/module.h>
31#include <linux/sched.h>
32#include <linux/errno.h>
33#include <linux/mm.h>
34#include <linux/slab.h>
35#include <linux/pci.h>
36#include <linux/list.h>
37#include <linux/init.h>
38#include "ibmphp.h"
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53LIST_HEAD (ibmphp_ebda_pci_rsrc_head);
54LIST_HEAD (ibmphp_slot_head);
55
56
57static struct ebda_hpc_list *hpc_list_ptr;
58static struct ebda_rsrc_list *rsrc_list_ptr;
59static struct rio_table_hdr *rio_table_ptr = NULL;
60static LIST_HEAD (ebda_hpc_head);
61static LIST_HEAD (bus_info_head);
62static LIST_HEAD (rio_vg_head);
63static LIST_HEAD (rio_lo_head);
64static LIST_HEAD (opt_vg_head);
65static LIST_HEAD (opt_lo_head);
66static void *io_mem;
67
68
69static int ebda_rsrc_controller (void);
70static int ebda_rsrc_rsrc (void);
71static int ebda_rio_table (void);
72
73static struct ebda_hpc_list * __init alloc_ebda_hpc_list (void)
74{
75 struct ebda_hpc_list *list;
76
77 list = kmalloc (sizeof (struct ebda_hpc_list), GFP_KERNEL);
78 if (!list)
79 return NULL;
80 memset (list, 0, sizeof (*list));
81 return list;
82}
83
84static struct controller *alloc_ebda_hpc (u32 slot_count, u32 bus_count)
85{
86 struct controller *controller;
87 struct ebda_hpc_slot *slots;
88 struct ebda_hpc_bus *buses;
89
90 controller = kmalloc (sizeof (struct controller), GFP_KERNEL);
91 if (!controller)
92 return NULL;
93 memset (controller, 0, sizeof (*controller));
94
95 slots = kmalloc (sizeof (struct ebda_hpc_slot) * slot_count, GFP_KERNEL);
96 if (!slots) {
97 kfree (controller);
98 return NULL;
99 }
100 memset (slots, 0, sizeof (*slots) * slot_count);
101 controller->slots = slots;
102
103 buses = kmalloc (sizeof (struct ebda_hpc_bus) * bus_count, GFP_KERNEL);
104 if (!buses) {
105 kfree (controller->slots);
106 kfree (controller);
107 return NULL;
108 }
109 memset (buses, 0, sizeof (*buses) * bus_count);
110 controller->buses = buses;
111
112 return controller;
113}
114
115static void free_ebda_hpc (struct controller *controller)
116{
117 kfree (controller->slots);
118 controller->slots = NULL;
119 kfree (controller->buses);
120 controller->buses = NULL;
121 controller->ctrl_dev = NULL;
122 kfree (controller);
123}
124
125static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list (void)
126{
127 struct ebda_rsrc_list *list;
128
129 list = kmalloc (sizeof (struct ebda_rsrc_list), GFP_KERNEL);
130 if (!list)
131 return NULL;
132 memset (list, 0, sizeof (*list));
133 return list;
134}
135
136static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc (void)
137{
138 struct ebda_pci_rsrc *resource;
139
140 resource = kmalloc (sizeof (struct ebda_pci_rsrc), GFP_KERNEL);
141 if (!resource)
142 return NULL;
143 memset (resource, 0, sizeof (*resource));
144 return resource;
145}
146
147static void __init print_bus_info (void)
148{
149 struct bus_info *ptr;
150 struct list_head *ptr1;
151
152 list_for_each (ptr1, &bus_info_head) {
153 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
154 debug ("%s - slot_min = %x\n", __FUNCTION__, ptr->slot_min);
155 debug ("%s - slot_max = %x\n", __FUNCTION__, ptr->slot_max);
156 debug ("%s - slot_count = %x\n", __FUNCTION__, ptr->slot_count);
157 debug ("%s - bus# = %x\n", __FUNCTION__, ptr->busno);
158 debug ("%s - current_speed = %x\n", __FUNCTION__, ptr->current_speed);
159 debug ("%s - controller_id = %x\n", __FUNCTION__, ptr->controller_id);
160
161 debug ("%s - slots_at_33_conv = %x\n", __FUNCTION__, ptr->slots_at_33_conv);
162 debug ("%s - slots_at_66_conv = %x\n", __FUNCTION__, ptr->slots_at_66_conv);
163 debug ("%s - slots_at_66_pcix = %x\n", __FUNCTION__, ptr->slots_at_66_pcix);
164 debug ("%s - slots_at_100_pcix = %x\n", __FUNCTION__, ptr->slots_at_100_pcix);
165 debug ("%s - slots_at_133_pcix = %x\n", __FUNCTION__, ptr->slots_at_133_pcix);
166
167 }
168}
169
170static void print_lo_info (void)
171{
172 struct rio_detail *ptr;
173 struct list_head *ptr1;
174 debug ("print_lo_info ---- \n");
175 list_for_each (ptr1, &rio_lo_head) {
176 ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
177 debug ("%s - rio_node_id = %x\n", __FUNCTION__, ptr->rio_node_id);
178 debug ("%s - rio_type = %x\n", __FUNCTION__, ptr->rio_type);
179 debug ("%s - owner_id = %x\n", __FUNCTION__, ptr->owner_id);
180 debug ("%s - first_slot_num = %x\n", __FUNCTION__, ptr->first_slot_num);
181 debug ("%s - wpindex = %x\n", __FUNCTION__, ptr->wpindex);
182 debug ("%s - chassis_num = %x\n", __FUNCTION__, ptr->chassis_num);
183
184 }
185}
186
187static void print_vg_info (void)
188{
189 struct rio_detail *ptr;
190 struct list_head *ptr1;
191 debug ("%s --- \n", __FUNCTION__);
192 list_for_each (ptr1, &rio_vg_head) {
193 ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
194 debug ("%s - rio_node_id = %x\n", __FUNCTION__, ptr->rio_node_id);
195 debug ("%s - rio_type = %x\n", __FUNCTION__, ptr->rio_type);
196 debug ("%s - owner_id = %x\n", __FUNCTION__, ptr->owner_id);
197 debug ("%s - first_slot_num = %x\n", __FUNCTION__, ptr->first_slot_num);
198 debug ("%s - wpindex = %x\n", __FUNCTION__, ptr->wpindex);
199 debug ("%s - chassis_num = %x\n", __FUNCTION__, ptr->chassis_num);
200
201 }
202}
203
204static void __init print_ebda_pci_rsrc (void)
205{
206 struct ebda_pci_rsrc *ptr;
207 struct list_head *ptr1;
208
209 list_for_each (ptr1, &ibmphp_ebda_pci_rsrc_head) {
210 ptr = list_entry (ptr1, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
211 debug ("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
212 __FUNCTION__, ptr->rsrc_type ,ptr->bus_num, ptr->dev_fun,ptr->start_addr, ptr->end_addr);
213 }
214}
215
216static void __init print_ibm_slot (void)
217{
218 struct slot *ptr;
219 struct list_head *ptr1;
220
221 list_for_each (ptr1, &ibmphp_slot_head) {
222 ptr = list_entry (ptr1, struct slot, ibm_slot_list);
223 debug ("%s - slot_number: %x \n", __FUNCTION__, ptr->number);
224 }
225}
226
227static void __init print_opt_vg (void)
228{
229 struct opt_rio *ptr;
230 struct list_head *ptr1;
231 debug ("%s --- \n", __FUNCTION__);
232 list_for_each (ptr1, &opt_vg_head) {
233 ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
234 debug ("%s - rio_type %x \n", __FUNCTION__, ptr->rio_type);
235 debug ("%s - chassis_num: %x \n", __FUNCTION__, ptr->chassis_num);
236 debug ("%s - first_slot_num: %x \n", __FUNCTION__, ptr->first_slot_num);
237 debug ("%s - middle_num: %x \n", __FUNCTION__, ptr->middle_num);
238 }
239}
240
241static void __init print_ebda_hpc (void)
242{
243 struct controller *hpc_ptr;
244 struct list_head *ptr1;
245 u16 index;
246
247 list_for_each (ptr1, &ebda_hpc_head) {
248
249 hpc_ptr = list_entry (ptr1, struct controller, ebda_hpc_list);
250
251 for (index = 0; index < hpc_ptr->slot_count; index++) {
252 debug ("%s - physical slot#: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_num);
253 debug ("%s - pci bus# of the slot: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_bus_num);
254 debug ("%s - index into ctlr addr: %x\n", __FUNCTION__, hpc_ptr->slots[index].ctl_index);
255 debug ("%s - cap of the slot: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_cap);
256 }
257
258 for (index = 0; index < hpc_ptr->bus_count; index++) {
259 debug ("%s - bus# of each bus controlled by this ctlr: %x\n", __FUNCTION__, hpc_ptr->buses[index].bus_num);
260 }
261
262 debug ("%s - type of hpc: %x\n", __FUNCTION__, hpc_ptr->ctlr_type);
263 switch (hpc_ptr->ctlr_type) {
264 case 1:
265 debug ("%s - bus: %x\n", __FUNCTION__, hpc_ptr->u.pci_ctlr.bus);
266 debug ("%s - dev_fun: %x\n", __FUNCTION__, hpc_ptr->u.pci_ctlr.dev_fun);
267 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
268 break;
269
270 case 0:
271 debug ("%s - io_start: %x\n", __FUNCTION__, hpc_ptr->u.isa_ctlr.io_start);
272 debug ("%s - io_end: %x\n", __FUNCTION__, hpc_ptr->u.isa_ctlr.io_end);
273 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
274 break;
275
276 case 2:
277 case 4:
278 debug ("%s - wpegbbar: %lx\n", __FUNCTION__, hpc_ptr->u.wpeg_ctlr.wpegbbar);
279 debug ("%s - i2c_addr: %x\n", __FUNCTION__, hpc_ptr->u.wpeg_ctlr.i2c_addr);
280 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
281 break;
282 }
283 }
284}
285
286int __init ibmphp_access_ebda (void)
287{
288 u8 format, num_ctlrs, rio_complete, hs_complete;
289 u16 ebda_seg, num_entries, next_offset, offset, blk_id, sub_addr, rc, re, rc_id, re_id, base;
290
291
292 rio_complete = 0;
293 hs_complete = 0;
294
295
296 io_mem = ioremap ((0x40 << 4) + 0x0e, 2);
297 if (!io_mem )
298 return -ENOMEM;
299 ebda_seg = readw (io_mem);
300 iounmap (io_mem);
301 debug ("returned ebda segment: %x\n", ebda_seg);
302
303 if(ebda_seg == 0)
304 return -ENOENT;
305
306 io_mem = ioremap (ebda_seg<<4, 65000);
307 if (!io_mem )
308 return -ENOMEM;
309 next_offset = 0x180;
310
311 for (;;) {
312 offset = next_offset;
313 next_offset = readw (io_mem + offset);
314
315 offset += 2;
316 if (next_offset == 0)
317 break;
318 blk_id = readw (io_mem + offset);
319
320 offset += 2;
321
322 if (blk_id != 0x4853 && blk_id != 0x4752)
323 continue;
324
325 if (blk_id == 0x4853) {
326 debug ("now enter hot swap block---\n");
327 debug ("hot blk id: %x\n", blk_id);
328 format = readb (io_mem + offset);
329
330 offset += 1;
331 if (format != 4) {
332 iounmap (io_mem);
333 return -ENODEV;
334 }
335 debug ("hot blk format: %x\n", format);
336
337 base = offset;
338
339 sub_addr = base;
340 re = readw (io_mem + sub_addr);
341
342 sub_addr += 2;
343 rc_id = readw (io_mem + sub_addr);
344
345 sub_addr += 2;
346 if (rc_id != 0x5243) {
347 iounmap (io_mem);
348 return -ENODEV;
349 }
350
351 num_ctlrs = readb (io_mem + sub_addr);
352
353 sub_addr += 1;
354 hpc_list_ptr = alloc_ebda_hpc_list ();
355 if (!hpc_list_ptr) {
356 iounmap (io_mem);
357 return -ENOMEM;
358 }
359 hpc_list_ptr->format = format;
360 hpc_list_ptr->num_ctlrs = num_ctlrs;
361 hpc_list_ptr->phys_addr = sub_addr;
362 debug ("info about hpc descriptor---\n");
363 debug ("hot blk format: %x\n", format);
364 debug ("num of controller: %x\n", num_ctlrs);
365 debug ("offset of hpc data structure enteries: %x\n ", sub_addr);
366
367 sub_addr = base + re;
368 rc = readw (io_mem + sub_addr);
369
370 sub_addr += 2;
371 re_id = readw (io_mem + sub_addr);
372
373 sub_addr += 2;
374 if (re_id != 0x5245) {
375 iounmap (io_mem);
376 return -ENODEV;
377 }
378
379
380 num_entries = readw (io_mem + sub_addr);
381
382 sub_addr += 2;
383 rsrc_list_ptr = alloc_ebda_rsrc_list ();
384 if (!rsrc_list_ptr ) {
385 iounmap (io_mem);
386 return -ENOMEM;
387 }
388 rsrc_list_ptr->format = format;
389 rsrc_list_ptr->num_entries = num_entries;
390 rsrc_list_ptr->phys_addr = sub_addr;
391
392 debug ("info about rsrc descriptor---\n");
393 debug ("format: %x\n", format);
394 debug ("num of rsrc: %x\n", num_entries);
395 debug ("offset of rsrc data structure enteries: %x\n ", sub_addr);
396
397 hs_complete = 1;
398 }
399
400 else if (blk_id == 0x4752) {
401 debug ("now enter io table ---\n");
402 debug ("rio blk id: %x\n", blk_id);
403
404 rio_table_ptr = kmalloc (sizeof (struct rio_table_hdr), GFP_KERNEL);
405 if (!rio_table_ptr)
406 return -ENOMEM;
407 memset (rio_table_ptr, 0, sizeof (struct rio_table_hdr) );
408 rio_table_ptr->ver_num = readb (io_mem + offset);
409 rio_table_ptr->scal_count = readb (io_mem + offset + 1);
410 rio_table_ptr->riodev_count = readb (io_mem + offset + 2);
411 rio_table_ptr->offset = offset +3 ;
412
413 debug ("info about rio table hdr ---\n");
414 debug ("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ", rio_table_ptr->ver_num, rio_table_ptr->scal_count, rio_table_ptr->riodev_count, rio_table_ptr->offset);
415
416 rio_complete = 1;
417 }
418 }
419
420 if (!hs_complete && !rio_complete) {
421 iounmap (io_mem);
422 return -ENODEV;
423 }
424
425 if (rio_table_ptr) {
426 if (rio_complete == 1 && rio_table_ptr->ver_num == 3) {
427 rc = ebda_rio_table ();
428 if (rc) {
429 iounmap (io_mem);
430 return rc;
431 }
432 }
433 }
434 rc = ebda_rsrc_controller ();
435 if (rc) {
436 iounmap (io_mem);
437 return rc;
438 }
439
440 rc = ebda_rsrc_rsrc ();
441 if (rc) {
442 iounmap (io_mem);
443 return rc;
444 }
445
446 iounmap (io_mem);
447 return 0;
448}
449
450
451
452
453static int __init ebda_rio_table (void)
454{
455 u16 offset;
456 u8 i;
457 struct rio_detail *rio_detail_ptr;
458
459 offset = rio_table_ptr->offset;
460 offset += 12 * rio_table_ptr->scal_count;
461
462
463 for (i = 0; i < rio_table_ptr->riodev_count; i++) {
464 rio_detail_ptr = kmalloc (sizeof (struct rio_detail), GFP_KERNEL);
465 if (!rio_detail_ptr)
466 return -ENOMEM;
467 memset (rio_detail_ptr, 0, sizeof (struct rio_detail));
468 rio_detail_ptr->rio_node_id = readb (io_mem + offset);
469 rio_detail_ptr->bbar = readl (io_mem + offset + 1);
470 rio_detail_ptr->rio_type = readb (io_mem + offset + 5);
471 rio_detail_ptr->owner_id = readb (io_mem + offset + 6);
472 rio_detail_ptr->port0_node_connect = readb (io_mem + offset + 7);
473 rio_detail_ptr->port0_port_connect = readb (io_mem + offset + 8);
474 rio_detail_ptr->port1_node_connect = readb (io_mem + offset + 9);
475 rio_detail_ptr->port1_port_connect = readb (io_mem + offset + 10);
476 rio_detail_ptr->first_slot_num = readb (io_mem + offset + 11);
477 rio_detail_ptr->status = readb (io_mem + offset + 12);
478 rio_detail_ptr->wpindex = readb (io_mem + offset + 13);
479 rio_detail_ptr->chassis_num = readb (io_mem + offset + 14);
480
481
482 if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5)
483 list_add (&rio_detail_ptr->rio_detail_list, &rio_vg_head);
484
485 else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7)
486 list_add (&rio_detail_ptr->rio_detail_list, &rio_lo_head);
487 else
488
489 kfree (rio_detail_ptr);
490 offset += 15;
491 }
492 print_lo_info ();
493 print_vg_info ();
494 return 0;
495}
496
497
498
499
500static struct opt_rio *search_opt_vg (u8 chassis_num)
501{
502 struct opt_rio *ptr;
503 struct list_head *ptr1;
504 list_for_each (ptr1, &opt_vg_head) {
505 ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
506 if (ptr->chassis_num == chassis_num)
507 return ptr;
508 }
509 return NULL;
510}
511
512static int __init combine_wpg_for_chassis (void)
513{
514 struct opt_rio *opt_rio_ptr = NULL;
515 struct rio_detail *rio_detail_ptr = NULL;
516 struct list_head *list_head_ptr = NULL;
517
518 list_for_each (list_head_ptr, &rio_vg_head) {
519 rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
520 opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num);
521 if (!opt_rio_ptr) {
522 opt_rio_ptr = (struct opt_rio *) kmalloc (sizeof (struct opt_rio), GFP_KERNEL);
523 if (!opt_rio_ptr)
524 return -ENOMEM;
525 memset (opt_rio_ptr, 0, sizeof (struct opt_rio));
526 opt_rio_ptr->rio_type = rio_detail_ptr->rio_type;
527 opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num;
528 opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
529 opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num;
530 list_add (&opt_rio_ptr->opt_rio_list, &opt_vg_head);
531 } else {
532 opt_rio_ptr->first_slot_num = min (opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
533 opt_rio_ptr->middle_num = max (opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num);
534 }
535 }
536 print_opt_vg ();
537 return 0;
538}
539
540
541
542
543static struct opt_rio_lo *search_opt_lo (u8 chassis_num)
544{
545 struct opt_rio_lo *ptr;
546 struct list_head *ptr1;
547 list_for_each (ptr1, &opt_lo_head) {
548 ptr = list_entry (ptr1, struct opt_rio_lo, opt_rio_lo_list);
549 if (ptr->chassis_num == chassis_num)
550 return ptr;
551 }
552 return NULL;
553}
554
555static int combine_wpg_for_expansion (void)
556{
557 struct opt_rio_lo *opt_rio_lo_ptr = NULL;
558 struct rio_detail *rio_detail_ptr = NULL;
559 struct list_head *list_head_ptr = NULL;
560
561 list_for_each (list_head_ptr, &rio_lo_head) {
562 rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
563 opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num);
564 if (!opt_rio_lo_ptr) {
565 opt_rio_lo_ptr = (struct opt_rio_lo *) kmalloc (sizeof (struct opt_rio_lo), GFP_KERNEL);
566 if (!opt_rio_lo_ptr)
567 return -ENOMEM;
568 memset (opt_rio_lo_ptr, 0, sizeof (struct opt_rio_lo));
569 opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type;
570 opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num;
571 opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
572 opt_rio_lo_ptr->middle_num = rio_detail_ptr->first_slot_num;
573 opt_rio_lo_ptr->pack_count = 1;
574
575 list_add (&opt_rio_lo_ptr->opt_rio_lo_list, &opt_lo_head);
576 } else {
577 opt_rio_lo_ptr->first_slot_num = min (opt_rio_lo_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
578 opt_rio_lo_ptr->middle_num = max (opt_rio_lo_ptr->middle_num, rio_detail_ptr->first_slot_num);
579 opt_rio_lo_ptr->pack_count = 2;
580 }
581 }
582 return 0;
583}
584
585
586
587
588
589
590
591static int first_slot_num (u8 slot_num, u8 first_slot, u8 var)
592{
593 struct opt_rio *opt_vg_ptr = NULL;
594 struct opt_rio_lo *opt_lo_ptr = NULL;
595 struct list_head *ptr = NULL;
596 int rc = 0;
597
598 if (!var) {
599 list_for_each (ptr, &opt_vg_head) {
600 opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
601 if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) {
602 rc = -ENODEV;
603 break;
604 }
605 }
606 } else {
607 list_for_each (ptr, &opt_lo_head) {
608 opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
609 if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) {
610 rc = -ENODEV;
611 break;
612 }
613 }
614 }
615 return rc;
616}
617
618static struct opt_rio_lo * find_rxe_num (u8 slot_num)
619{
620 struct opt_rio_lo *opt_lo_ptr;
621 struct list_head *ptr;
622
623 list_for_each (ptr, &opt_lo_head) {
624 opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
625
626 if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_lo_ptr->first_slot_num, 1)))
627 return opt_lo_ptr;
628 }
629 return NULL;
630}
631
632static struct opt_rio * find_chassis_num (u8 slot_num)
633{
634 struct opt_rio *opt_vg_ptr;
635 struct list_head *ptr;
636
637 list_for_each (ptr, &opt_vg_head) {
638 opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
639
640 if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_vg_ptr->first_slot_num, 0)))
641 return opt_vg_ptr;
642 }
643 return NULL;
644}
645
646
647
648
649static u8 calculate_first_slot (u8 slot_num)
650{
651 u8 first_slot = 1;
652 struct list_head * list;
653 struct slot * slot_cur;
654
655 list_for_each (list, &ibmphp_slot_head) {
656 slot_cur = list_entry (list, struct slot, ibm_slot_list);
657 if (slot_cur->ctrl) {
658 if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num))
659 first_slot = slot_cur->ctrl->ending_slot_num;
660 }
661 }
662 return first_slot + 1;
663
664}
665static char *create_file_name (struct slot * slot_cur)
666{
667 struct opt_rio *opt_vg_ptr = NULL;
668 struct opt_rio_lo *opt_lo_ptr = NULL;
669 static char str[30];
670 int which = 0;
671 u8 number = 1;
672 u8 first_slot = 1;
673 u8 slot_num;
674 u8 flag = 0;
675
676 if (!slot_cur) {
677 err ("Structure passed is empty \n");
678 return NULL;
679 }
680
681 slot_num = slot_cur->number;
682
683 memset (str, 0, sizeof(str));
684
685 if (rio_table_ptr) {
686 if (rio_table_ptr->ver_num == 3) {
687 opt_vg_ptr = find_chassis_num (slot_num);
688 opt_lo_ptr = find_rxe_num (slot_num);
689 }
690 }
691 if (opt_vg_ptr) {
692 if (opt_lo_ptr) {
693 if ((slot_num - opt_vg_ptr->first_slot_num) > (slot_num - opt_lo_ptr->first_slot_num)) {
694 number = opt_lo_ptr->chassis_num;
695 first_slot = opt_lo_ptr->first_slot_num;
696 which = 1;
697 } else {
698 first_slot = opt_vg_ptr->first_slot_num;
699 number = opt_vg_ptr->chassis_num;
700 which = 0;
701 }
702 } else {
703 first_slot = opt_vg_ptr->first_slot_num;
704 number = opt_vg_ptr->chassis_num;
705 which = 0;
706 }
707 ++flag;
708 } else if (opt_lo_ptr) {
709 number = opt_lo_ptr->chassis_num;
710 first_slot = opt_lo_ptr->first_slot_num;
711 which = 1;
712 ++flag;
713 } else if (rio_table_ptr) {
714 if (rio_table_ptr->ver_num == 3) {
715
716 return NULL;
717 }
718 }
719 if (!flag) {
720 if (slot_cur->ctrl->ctlr_type == 4) {
721 first_slot = calculate_first_slot (slot_num);
722 which = 1;
723 } else {
724 which = 0;
725 }
726 }
727
728 sprintf(str, "%s%dslot%d",
729 which == 0 ? "chassis" : "rxe",
730 number, slot_num - first_slot + 1);
731 return str;
732}
733
734static struct pci_driver ibmphp_driver;
735
736
737
738
739
740
741static int __init ebda_rsrc_controller (void)
742{
743 u16 addr, addr_slot, addr_bus;
744 u8 ctlr_id, temp, bus_index;
745 u16 ctlr, slot, bus;
746 u16 slot_num, bus_num, index;
747 struct hotplug_slot *hp_slot_ptr;
748 struct controller *hpc_ptr;
749 struct ebda_hpc_bus *bus_ptr;
750 struct ebda_hpc_slot *slot_ptr;
751 struct bus_info *bus_info_ptr1, *bus_info_ptr2;
752 int rc;
753 struct slot *tmp_slot;
754 struct list_head *list;
755
756 addr = hpc_list_ptr->phys_addr;
757 for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) {
758 bus_index = 1;
759 ctlr_id = readb (io_mem + addr);
760 addr += 1;
761 slot_num = readb (io_mem + addr);
762
763 addr += 1;
764 addr_slot = addr;
765 addr += (slot_num * 4);
766
767 bus_num = readb (io_mem + addr);
768
769 addr += 1;
770 addr_bus = addr;
771 addr += (bus_num * 9);
772 temp = readb (io_mem + addr);
773
774 addr += 1;
775
776 hpc_ptr = alloc_ebda_hpc (slot_num, bus_num);
777 if (!hpc_ptr ) {
778 rc = -ENOMEM;
779 goto error_no_hpc;
780 }
781 hpc_ptr->ctlr_id = ctlr_id;
782 hpc_ptr->ctlr_relative_id = ctlr;
783 hpc_ptr->slot_count = slot_num;
784 hpc_ptr->bus_count = bus_num;
785 debug ("now enter ctlr data struture ---\n");
786 debug ("ctlr id: %x\n", ctlr_id);
787 debug ("ctlr_relative_id: %x\n", hpc_ptr->ctlr_relative_id);
788 debug ("count of slots controlled by this ctlr: %x\n", slot_num);
789 debug ("count of buses controlled by this ctlr: %x\n", bus_num);
790
791
792 slot_ptr = hpc_ptr->slots;
793 for (slot = 0; slot < slot_num; slot++) {
794 slot_ptr->slot_num = readb (io_mem + addr_slot);
795 slot_ptr->slot_bus_num = readb (io_mem + addr_slot + slot_num);
796 slot_ptr->ctl_index = readb (io_mem + addr_slot + 2*slot_num);
797 slot_ptr->slot_cap = readb (io_mem + addr_slot + 3*slot_num);
798
799
800
801 bus_info_ptr2 = ibmphp_find_same_bus_num (slot_ptr->slot_bus_num);
802 if (!bus_info_ptr2) {
803 bus_info_ptr1 = (struct bus_info *) kmalloc (sizeof (struct bus_info), GFP_KERNEL);
804 if (!bus_info_ptr1) {
805 rc = -ENOMEM;
806 goto error_no_hp_slot;
807 }
808 memset (bus_info_ptr1, 0, sizeof (struct bus_info));
809 bus_info_ptr1->slot_min = slot_ptr->slot_num;
810 bus_info_ptr1->slot_max = slot_ptr->slot_num;
811 bus_info_ptr1->slot_count += 1;
812 bus_info_ptr1->busno = slot_ptr->slot_bus_num;
813 bus_info_ptr1->index = bus_index++;
814 bus_info_ptr1->current_speed = 0xff;
815 bus_info_ptr1->current_bus_mode = 0xff;
816
817 bus_info_ptr1->controller_id = hpc_ptr->ctlr_id;
818
819 list_add_tail (&bus_info_ptr1->bus_info_list, &bus_info_head);
820
821 } else {
822 bus_info_ptr2->slot_min = min (bus_info_ptr2->slot_min, slot_ptr->slot_num);
823 bus_info_ptr2->slot_max = max (bus_info_ptr2->slot_max, slot_ptr->slot_num);
824 bus_info_ptr2->slot_count += 1;
825
826 }
827
828
829
830 slot_ptr++;
831 addr_slot += 1;
832 }
833
834
835 bus_ptr = hpc_ptr->buses;
836 for (bus = 0; bus < bus_num; bus++) {
837 bus_ptr->bus_num = readb (io_mem + addr_bus + bus);
838 bus_ptr->slots_at_33_conv = readb (io_mem + addr_bus + bus_num + 8 * bus);
839 bus_ptr->slots_at_66_conv = readb (io_mem + addr_bus + bus_num + 8 * bus + 1);
840
841 bus_ptr->slots_at_66_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 2);
842
843 bus_ptr->slots_at_100_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 3);
844
845 bus_ptr->slots_at_133_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 4);
846
847 bus_info_ptr2 = ibmphp_find_same_bus_num (bus_ptr->bus_num);
848 if (bus_info_ptr2) {
849 bus_info_ptr2->slots_at_33_conv = bus_ptr->slots_at_33_conv;
850 bus_info_ptr2->slots_at_66_conv = bus_ptr->slots_at_66_conv;
851 bus_info_ptr2->slots_at_66_pcix = bus_ptr->slots_at_66_pcix;
852 bus_info_ptr2->slots_at_100_pcix = bus_ptr->slots_at_100_pcix;
853 bus_info_ptr2->slots_at_133_pcix = bus_ptr->slots_at_133_pcix;
854 }
855 bus_ptr++;
856 }
857
858 hpc_ptr->ctlr_type = temp;
859
860 switch (hpc_ptr->ctlr_type) {
861 case 1:
862 hpc_ptr->u.pci_ctlr.bus = readb (io_mem + addr);
863 hpc_ptr->u.pci_ctlr.dev_fun = readb (io_mem + addr + 1);
864 hpc_ptr->irq = readb (io_mem + addr + 2);
865 addr += 3;
866 debug ("ctrl bus = %x, ctlr devfun = %x, irq = %x\n",
867 hpc_ptr->u.pci_ctlr.bus,
868 hpc_ptr->u.pci_ctlr.dev_fun, hpc_ptr->irq);
869 break;
870
871 case 0:
872 hpc_ptr->u.isa_ctlr.io_start = readw (io_mem + addr);
873 hpc_ptr->u.isa_ctlr.io_end = readw (io_mem + addr + 2);
874 if (!request_region (hpc_ptr->u.isa_ctlr.io_start,
875 (hpc_ptr->u.isa_ctlr.io_end - hpc_ptr->u.isa_ctlr.io_start + 1),
876 "ibmphp")) {
877 rc = -ENODEV;
878 goto error_no_hp_slot;
879 }
880 hpc_ptr->irq = readb (io_mem + addr + 4);
881 addr += 5;
882 break;
883
884 case 2:
885 case 4:
886 hpc_ptr->u.wpeg_ctlr.wpegbbar = readl (io_mem + addr);
887 hpc_ptr->u.wpeg_ctlr.i2c_addr = readb (io_mem + addr + 4);
888 hpc_ptr->irq = readb (io_mem + addr + 5);
889 addr += 6;
890 break;
891 default:
892 rc = -ENODEV;
893 goto error_no_hp_slot;
894 }
895
896
897 combine_wpg_for_chassis ();
898 combine_wpg_for_expansion ();
899 hpc_ptr->revision = 0xff;
900 hpc_ptr->options = 0xff;
901 hpc_ptr->starting_slot_num = hpc_ptr->slots[0].slot_num;
902 hpc_ptr->ending_slot_num = hpc_ptr->slots[slot_num-1].slot_num;
903
904
905 for (index = 0; index < hpc_ptr->slot_count; index++) {
906
907 hp_slot_ptr = (struct hotplug_slot *) kmalloc (sizeof (struct hotplug_slot), GFP_KERNEL);
908 if (!hp_slot_ptr) {
909 rc = -ENOMEM;
910 goto error_no_hp_slot;
911 }
912 memset (hp_slot_ptr, 0, sizeof (struct hotplug_slot));
913
914 hp_slot_ptr->info = (struct hotplug_slot_info *) kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL);
915 if (!hp_slot_ptr->info) {
916 rc = -ENOMEM;
917 goto error_no_hp_info;
918 }
919 memset (hp_slot_ptr->info, 0, sizeof (struct hotplug_slot_info));
920
921 hp_slot_ptr->name = (char *) kmalloc (30, GFP_KERNEL);
922 if (!hp_slot_ptr->name) {
923 rc = -ENOMEM;
924 goto error_no_hp_name;
925 }
926
927 tmp_slot = kmalloc (sizeof (struct slot), GFP_KERNEL);
928 if (!tmp_slot) {
929 rc = -ENOMEM;
930 goto error_no_slot;
931 }
932 memset (tmp_slot, 0, sizeof (*tmp_slot));
933
934 tmp_slot->flag = TRUE;
935
936 tmp_slot->capabilities = hpc_ptr->slots[index].slot_cap;
937 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX)
938 tmp_slot->supported_speed = 3;
939 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_100_MAX) == EBDA_SLOT_100_MAX)
940 tmp_slot->supported_speed = 2;
941 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_66_MAX) == EBDA_SLOT_66_MAX)
942 tmp_slot->supported_speed = 1;
943
944 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_PCIX_CAP) == EBDA_SLOT_PCIX_CAP)
945 tmp_slot->supported_bus_mode = 1;
946 else
947 tmp_slot->supported_bus_mode = 0;
948
949
950 tmp_slot->bus = hpc_ptr->slots[index].slot_bus_num;
951
952 bus_info_ptr1 = ibmphp_find_same_bus_num (hpc_ptr->slots[index].slot_bus_num);
953 if (!bus_info_ptr1) {
954 rc = -ENODEV;
955 goto error;
956 }
957 tmp_slot->bus_on = bus_info_ptr1;
958 bus_info_ptr1 = NULL;
959 tmp_slot->ctrl = hpc_ptr;
960
961 tmp_slot->ctlr_index = hpc_ptr->slots[index].ctl_index;
962 tmp_slot->number = hpc_ptr->slots[index].slot_num;
963 tmp_slot->hotplug_slot = hp_slot_ptr;
964
965 hp_slot_ptr->private = tmp_slot;
966
967 rc = ibmphp_hpc_fillhpslotinfo (hp_slot_ptr);
968 if (rc)
969 goto error;
970
971 rc = ibmphp_init_devno ((struct slot **) &hp_slot_ptr->private);
972 if (rc)
973 goto error;
974 hp_slot_ptr->ops = &ibmphp_hotplug_slot_ops;
975
976
977
978 list_add (& ((struct slot *)(hp_slot_ptr->private))->ibm_slot_list, &ibmphp_slot_head);
979 }
980
981 print_bus_info ();
982 list_add (&hpc_ptr->ebda_hpc_list, &ebda_hpc_head );
983
984 }
985
986 list_for_each (list, &ibmphp_slot_head) {
987 tmp_slot = list_entry (list, struct slot, ibm_slot_list);
988
989 snprintf (tmp_slot->hotplug_slot->name, 30, "%s", create_file_name (tmp_slot));
990 pci_hp_register (tmp_slot->hotplug_slot);
991 }
992
993 print_ebda_hpc ();
994 print_ibm_slot ();
995 return 0;
996
997error:
998 kfree (hp_slot_ptr->private);
999error_no_slot:
1000 kfree (hp_slot_ptr->name);
1001error_no_hp_name:
1002 kfree (hp_slot_ptr->info);
1003error_no_hp_info:
1004 kfree (hp_slot_ptr);
1005error_no_hp_slot:
1006 free_ebda_hpc (hpc_ptr);
1007error_no_hpc:
1008 iounmap (io_mem);
1009 return rc;
1010}
1011
1012
1013
1014
1015
1016static int __init ebda_rsrc_rsrc (void)
1017{
1018 u16 addr;
1019 short rsrc;
1020 u8 type, rsrc_type;
1021 struct ebda_pci_rsrc *rsrc_ptr;
1022
1023 addr = rsrc_list_ptr->phys_addr;
1024 debug ("now entering rsrc land\n");
1025 debug ("offset of rsrc: %x\n", rsrc_list_ptr->phys_addr);
1026
1027 for (rsrc = 0; rsrc < rsrc_list_ptr->num_entries; rsrc++) {
1028 type = readb (io_mem + addr);
1029
1030 addr += 1;
1031 rsrc_type = type & EBDA_RSRC_TYPE_MASK;
1032
1033 if (rsrc_type == EBDA_IO_RSRC_TYPE) {
1034 rsrc_ptr = alloc_ebda_pci_rsrc ();
1035 if (!rsrc_ptr) {
1036 iounmap (io_mem);
1037 return -ENOMEM;
1038 }
1039 rsrc_ptr->rsrc_type = type;
1040
1041 rsrc_ptr->bus_num = readb (io_mem + addr);
1042 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1043 rsrc_ptr->start_addr = readw (io_mem + addr + 2);
1044 rsrc_ptr->end_addr = readw (io_mem + addr + 4);
1045 addr += 6;
1046
1047 debug ("rsrc from io type ----\n");
1048 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1049 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1050
1051 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1052 }
1053
1054 if (rsrc_type == EBDA_MEM_RSRC_TYPE || rsrc_type == EBDA_PFM_RSRC_TYPE) {
1055 rsrc_ptr = alloc_ebda_pci_rsrc ();
1056 if (!rsrc_ptr ) {
1057 iounmap (io_mem);
1058 return -ENOMEM;
1059 }
1060 rsrc_ptr->rsrc_type = type;
1061
1062 rsrc_ptr->bus_num = readb (io_mem + addr);
1063 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1064 rsrc_ptr->start_addr = readl (io_mem + addr + 2);
1065 rsrc_ptr->end_addr = readl (io_mem + addr + 6);
1066 addr += 10;
1067
1068 debug ("rsrc from mem or pfm ---\n");
1069 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1070 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1071
1072 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1073 }
1074 }
1075 kfree (rsrc_list_ptr);
1076 rsrc_list_ptr = NULL;
1077 print_ebda_pci_rsrc ();
1078 return 0;
1079}
1080
1081u16 ibmphp_get_total_controllers (void)
1082{
1083 return hpc_list_ptr->num_ctlrs;
1084}
1085
1086struct slot *ibmphp_get_slot_from_physical_num (u8 physical_num)
1087{
1088 struct slot *slot;
1089 struct list_head *list;
1090
1091 list_for_each (list, &ibmphp_slot_head) {
1092 slot = list_entry (list, struct slot, ibm_slot_list);
1093 if (slot->number == physical_num)
1094 return slot;
1095 }
1096 return NULL;
1097}
1098
1099
1100
1101
1102
1103
1104
1105struct bus_info *ibmphp_find_same_bus_num (u32 num)
1106{
1107 struct bus_info *ptr;
1108 struct list_head *ptr1;
1109
1110 list_for_each (ptr1, &bus_info_head) {
1111 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
1112 if (ptr->busno == num)
1113 return ptr;
1114 }
1115 return NULL;
1116}
1117
1118
1119
1120
1121int ibmphp_get_bus_index (u8 num)
1122{
1123 struct bus_info *ptr;
1124 struct list_head *ptr1;
1125
1126 list_for_each (ptr1, &bus_info_head) {
1127 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
1128 if (ptr->busno == num)
1129 return ptr->index;
1130 }
1131 return -ENODEV;
1132}
1133
1134void ibmphp_free_bus_info_queue (void)
1135{
1136 struct bus_info *bus_info;
1137 struct list_head *list;
1138 struct list_head *next;
1139
1140 list_for_each_safe (list, next, &bus_info_head ) {
1141 bus_info = list_entry (list, struct bus_info, bus_info_list);
1142 kfree (bus_info);
1143 }
1144}
1145
1146void ibmphp_free_ebda_hpc_queue (void)
1147{
1148 struct controller *controller = NULL;
1149 struct list_head *list;
1150 struct list_head *next;
1151 int pci_flag = 0;
1152
1153 list_for_each_safe (list, next, &ebda_hpc_head) {
1154 controller = list_entry (list, struct controller, ebda_hpc_list);
1155 if (controller->ctlr_type == 0)
1156 release_region (controller->u.isa_ctlr.io_start, (controller->u.isa_ctlr.io_end - controller->u.isa_ctlr.io_start + 1));
1157 else if ((controller->ctlr_type == 1) && (!pci_flag)) {
1158 ++pci_flag;
1159 pci_unregister_driver (&ibmphp_driver);
1160 }
1161 free_ebda_hpc (controller);
1162 }
1163}
1164
1165void ibmphp_free_ebda_pci_rsrc_queue (void)
1166{
1167 struct ebda_pci_rsrc *resource;
1168 struct list_head *list;
1169 struct list_head *next;
1170
1171 list_for_each_safe (list, next, &ibmphp_ebda_pci_rsrc_head) {
1172 resource = list_entry (list, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
1173 kfree (resource);
1174 resource = NULL;
1175 }
1176}
1177
1178static struct pci_device_id id_table[] __devinitdata = {
1179 {
1180 vendor: PCI_VENDOR_ID_IBM,
1181 device: HPC_DEVICE_ID,
1182 subvendor: PCI_VENDOR_ID_IBM,
1183 subdevice: HPC_SUBSYSTEM_ID,
1184 class: ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00),
1185 }, {}
1186};
1187
1188MODULE_DEVICE_TABLE(pci, id_table);
1189
1190static int ibmphp_probe (struct pci_dev *, const struct pci_device_id *);
1191static struct pci_driver ibmphp_driver = {
1192 name: "ibmphp",
1193 id_table: id_table,
1194 probe: ibmphp_probe,
1195};
1196
1197int ibmphp_register_pci (void)
1198{
1199 struct controller *ctrl;
1200 struct list_head *tmp;
1201 int rc = 0;
1202
1203 list_for_each (tmp, &ebda_hpc_head) {
1204 ctrl = list_entry (tmp, struct controller, ebda_hpc_list);
1205 if (ctrl->ctlr_type == 1) {
1206 rc = pci_module_init (&ibmphp_driver);
1207 break;
1208 }
1209 }
1210 return rc;
1211}
1212static int ibmphp_probe (struct pci_dev * dev, const struct pci_device_id *ids)
1213{
1214 struct controller *ctrl;
1215 struct list_head *tmp;
1216
1217 debug ("inside ibmphp_probe \n");
1218
1219 list_for_each (tmp, &ebda_hpc_head) {
1220 ctrl = list_entry (tmp, struct controller, ebda_hpc_list);
1221 if (ctrl->ctlr_type == 1) {
1222 if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) {
1223 ctrl->ctrl_dev = dev;
1224 debug ("found device!!! \n");
1225 debug ("dev->device = %x, dev->subsystem_device = %x\n", dev->device, dev->subsystem_device);
1226 return 0;
1227 }
1228 }
1229 }
1230 return -ENODEV;
1231}
1232
1233
