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1/*
2 * IBM Hot Plug Controller Driver
3 *
4 * Written By: Tong Yu, IBM Corporation
5 *
6 * Copyright (C) 2001,2003 Greg Kroah-Hartman (greg@kroah.com)
7 * Copyright (C) 2001-2003 IBM Corp.
8 *
9 * All rights reserved.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or (at
14 * your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
19 * NON INFRINGEMENT. See the GNU General Public License for more
20 * details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 *
26 * Send feedback to <gregkh@us.ibm.com>
27 *
28 */
29
30#include <linux/module.h>
31#include <linux/errno.h>
32#include <linux/mm.h>
33#include <linux/slab.h>
34#include <linux/pci.h>
35#include <linux/list.h>
36#include <linux/init.h>
37#include "ibmphp.h"
38
39/*
40 * POST builds data blocks(in this data block definition, a char-1
41 * byte, short(or word)-2 byte, long(dword)-4 byte) in the Extended
42 * BIOS Data Area which describe the configuration of the hot-plug
43 * controllers and resources used by the PCI Hot-Plug devices.
44 *
45 * This file walks EBDA, maps data block from physical addr,
46 * reconstruct linked lists about all system resource(MEM, PFM, IO)
47 * already assigned by POST, as well as linked lists about hot plug
48 * controllers (ctlr#, slot#, bus&slot features...)
49 */
50
51/* Global lists */
52LIST_HEAD (ibmphp_ebda_pci_rsrc_head);
53LIST_HEAD (ibmphp_slot_head);
54
55/* Local variables */
56static struct ebda_hpc_list *hpc_list_ptr;
57static struct ebda_rsrc_list *rsrc_list_ptr;
58static struct rio_table_hdr *rio_table_ptr = NULL;
59static LIST_HEAD (ebda_hpc_head);
60static LIST_HEAD (bus_info_head);
61static LIST_HEAD (rio_vg_head);
62static LIST_HEAD (rio_lo_head);
63static LIST_HEAD (opt_vg_head);
64static LIST_HEAD (opt_lo_head);
65static void __iomem *io_mem;
66
67/* Local functions */
68static int ebda_rsrc_controller (void);
69static int ebda_rsrc_rsrc (void);
70static int ebda_rio_table (void);
71
72static struct ebda_hpc_list * __init alloc_ebda_hpc_list (void)
73{
74 return kzalloc(sizeof(struct ebda_hpc_list), GFP_KERNEL);
75}
76
77static struct controller *alloc_ebda_hpc (u32 slot_count, u32 bus_count)
78{
79 struct controller *controller;
80 struct ebda_hpc_slot *slots;
81 struct ebda_hpc_bus *buses;
82
83 controller = kzalloc(sizeof(struct controller), GFP_KERNEL);
84 if (!controller)
85 goto error;
86
87 slots = kcalloc(slot_count, sizeof(struct ebda_hpc_slot), GFP_KERNEL);
88 if (!slots)
89 goto error_contr;
90 controller->slots = slots;
91
92 buses = kcalloc(bus_count, sizeof(struct ebda_hpc_bus), GFP_KERNEL);
93 if (!buses)
94 goto error_slots;
95 controller->buses = buses;
96
97 return controller;
98error_slots:
99 kfree(controller->slots);
100error_contr:
101 kfree(controller);
102error:
103 return NULL;
104}
105
106static void free_ebda_hpc (struct controller *controller)
107{
108 kfree (controller->slots);
109 kfree (controller->buses);
110 kfree (controller);
111}
112
113static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list (void)
114{
115 return kzalloc(sizeof(struct ebda_rsrc_list), GFP_KERNEL);
116}
117
118static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc (void)
119{
120 return kzalloc(sizeof(struct ebda_pci_rsrc), GFP_KERNEL);
121}
122
123static void __init print_bus_info (void)
124{
125 struct bus_info *ptr;
126
127 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
128 debug ("%s - slot_min = %x\n", __func__, ptr->slot_min);
129 debug ("%s - slot_max = %x\n", __func__, ptr->slot_max);
130 debug ("%s - slot_count = %x\n", __func__, ptr->slot_count);
131 debug ("%s - bus# = %x\n", __func__, ptr->busno);
132 debug ("%s - current_speed = %x\n", __func__, ptr->current_speed);
133 debug ("%s - controller_id = %x\n", __func__, ptr->controller_id);
134
135 debug ("%s - slots_at_33_conv = %x\n", __func__, ptr->slots_at_33_conv);
136 debug ("%s - slots_at_66_conv = %x\n", __func__, ptr->slots_at_66_conv);
137 debug ("%s - slots_at_66_pcix = %x\n", __func__, ptr->slots_at_66_pcix);
138 debug ("%s - slots_at_100_pcix = %x\n", __func__, ptr->slots_at_100_pcix);
139 debug ("%s - slots_at_133_pcix = %x\n", __func__, ptr->slots_at_133_pcix);
140
141 }
142}
143
144static void print_lo_info (void)
145{
146 struct rio_detail *ptr;
147 debug ("print_lo_info ----\n");
148 list_for_each_entry(ptr, &rio_lo_head, rio_detail_list) {
149 debug ("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id);
150 debug ("%s - rio_type = %x\n", __func__, ptr->rio_type);
151 debug ("%s - owner_id = %x\n", __func__, ptr->owner_id);
152 debug ("%s - first_slot_num = %x\n", __func__, ptr->first_slot_num);
153 debug ("%s - wpindex = %x\n", __func__, ptr->wpindex);
154 debug ("%s - chassis_num = %x\n", __func__, ptr->chassis_num);
155
156 }
157}
158
159static void print_vg_info (void)
160{
161 struct rio_detail *ptr;
162 debug ("%s ---\n", __func__);
163 list_for_each_entry(ptr, &rio_vg_head, rio_detail_list) {
164 debug ("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id);
165 debug ("%s - rio_type = %x\n", __func__, ptr->rio_type);
166 debug ("%s - owner_id = %x\n", __func__, ptr->owner_id);
167 debug ("%s - first_slot_num = %x\n", __func__, ptr->first_slot_num);
168 debug ("%s - wpindex = %x\n", __func__, ptr->wpindex);
169 debug ("%s - chassis_num = %x\n", __func__, ptr->chassis_num);
170
171 }
172}
173
174static void __init print_ebda_pci_rsrc (void)
175{
176 struct ebda_pci_rsrc *ptr;
177
178 list_for_each_entry(ptr, &ibmphp_ebda_pci_rsrc_head, ebda_pci_rsrc_list) {
179 debug ("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
180 __func__, ptr->rsrc_type ,ptr->bus_num, ptr->dev_fun,ptr->start_addr, ptr->end_addr);
181 }
182}
183
184static void __init print_ibm_slot (void)
185{
186 struct slot *ptr;
187
188 list_for_each_entry(ptr, &ibmphp_slot_head, ibm_slot_list) {
189 debug ("%s - slot_number: %x\n", __func__, ptr->number);
190 }
191}
192
193static void __init print_opt_vg (void)
194{
195 struct opt_rio *ptr;
196 debug ("%s ---\n", __func__);
197 list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) {
198 debug ("%s - rio_type %x\n", __func__, ptr->rio_type);
199 debug ("%s - chassis_num: %x\n", __func__, ptr->chassis_num);
200 debug ("%s - first_slot_num: %x\n", __func__, ptr->first_slot_num);
201 debug ("%s - middle_num: %x\n", __func__, ptr->middle_num);
202 }
203}
204
205static void __init print_ebda_hpc (void)
206{
207 struct controller *hpc_ptr;
208 u16 index;
209
210 list_for_each_entry(hpc_ptr, &ebda_hpc_head, ebda_hpc_list) {
211 for (index = 0; index < hpc_ptr->slot_count; index++) {
212 debug ("%s - physical slot#: %x\n", __func__, hpc_ptr->slots[index].slot_num);
213 debug ("%s - pci bus# of the slot: %x\n", __func__, hpc_ptr->slots[index].slot_bus_num);
214 debug ("%s - index into ctlr addr: %x\n", __func__, hpc_ptr->slots[index].ctl_index);
215 debug ("%s - cap of the slot: %x\n", __func__, hpc_ptr->slots[index].slot_cap);
216 }
217
218 for (index = 0; index < hpc_ptr->bus_count; index++) {
219 debug ("%s - bus# of each bus controlled by this ctlr: %x\n", __func__, hpc_ptr->buses[index].bus_num);
220 }
221
222 debug ("%s - type of hpc: %x\n", __func__, hpc_ptr->ctlr_type);
223 switch (hpc_ptr->ctlr_type) {
224 case 1:
225 debug ("%s - bus: %x\n", __func__, hpc_ptr->u.pci_ctlr.bus);
226 debug ("%s - dev_fun: %x\n", __func__, hpc_ptr->u.pci_ctlr.dev_fun);
227 debug ("%s - irq: %x\n", __func__, hpc_ptr->irq);
228 break;
229
230 case 0:
231 debug ("%s - io_start: %x\n", __func__, hpc_ptr->u.isa_ctlr.io_start);
232 debug ("%s - io_end: %x\n", __func__, hpc_ptr->u.isa_ctlr.io_end);
233 debug ("%s - irq: %x\n", __func__, hpc_ptr->irq);
234 break;
235
236 case 2:
237 case 4:
238 debug ("%s - wpegbbar: %lx\n", __func__, hpc_ptr->u.wpeg_ctlr.wpegbbar);
239 debug ("%s - i2c_addr: %x\n", __func__, hpc_ptr->u.wpeg_ctlr.i2c_addr);
240 debug ("%s - irq: %x\n", __func__, hpc_ptr->irq);
241 break;
242 }
243 }
244}
245
246int __init ibmphp_access_ebda (void)
247{
248 u8 format, num_ctlrs, rio_complete, hs_complete, ebda_sz;
249 u16 ebda_seg, num_entries, next_offset, offset, blk_id, sub_addr, re, rc_id, re_id, base;
250 int rc = 0;
251
252
253 rio_complete = 0;
254 hs_complete = 0;
255
256 io_mem = ioremap ((0x40 << 4) + 0x0e, 2);
257 if (!io_mem )
258 return -ENOMEM;
259 ebda_seg = readw (io_mem);
260 iounmap (io_mem);
261 debug ("returned ebda segment: %x\n", ebda_seg);
262
263 io_mem = ioremap(ebda_seg<<4, 1);
264 if (!io_mem)
265 return -ENOMEM;
266 ebda_sz = readb(io_mem);
267 iounmap(io_mem);
268 debug("ebda size: %d(KiB)\n", ebda_sz);
269 if (ebda_sz == 0)
270 return -ENOMEM;
271
272 io_mem = ioremap(ebda_seg<<4, (ebda_sz * 1024));
273 if (!io_mem )
274 return -ENOMEM;
275 next_offset = 0x180;
276
277 for (;;) {
278 offset = next_offset;
279
280 /* Make sure what we read is still in the mapped section */
281 if (WARN(offset > (ebda_sz * 1024 - 4),
282 "ibmphp_ebda: next read is beyond ebda_sz\n"))
283 break;
284
285 next_offset = readw (io_mem + offset); /* offset of next blk */
286
287 offset += 2;
288 if (next_offset == 0) /* 0 indicate it's last blk */
289 break;
290 blk_id = readw (io_mem + offset); /* this blk id */
291
292 offset += 2;
293 /* check if it is hot swap block or rio block */
294 if (blk_id != 0x4853 && blk_id != 0x4752)
295 continue;
296 /* found hs table */
297 if (blk_id == 0x4853) {
298 debug ("now enter hot swap block---\n");
299 debug ("hot blk id: %x\n", blk_id);
300 format = readb (io_mem + offset);
301
302 offset += 1;
303 if (format != 4)
304 goto error_nodev;
305 debug ("hot blk format: %x\n", format);
306 /* hot swap sub blk */
307 base = offset;
308
309 sub_addr = base;
310 re = readw (io_mem + sub_addr); /* next sub blk */
311
312 sub_addr += 2;
313 rc_id = readw (io_mem + sub_addr); /* sub blk id */
314
315 sub_addr += 2;
316 if (rc_id != 0x5243)
317 goto error_nodev;
318 /* rc sub blk signature */
319 num_ctlrs = readb (io_mem + sub_addr);
320
321 sub_addr += 1;
322 hpc_list_ptr = alloc_ebda_hpc_list ();
323 if (!hpc_list_ptr) {
324 rc = -ENOMEM;
325 goto out;
326 }
327 hpc_list_ptr->format = format;
328 hpc_list_ptr->num_ctlrs = num_ctlrs;
329 hpc_list_ptr->phys_addr = sub_addr; /* offset of RSRC_CONTROLLER blk */
330 debug ("info about hpc descriptor---\n");
331 debug ("hot blk format: %x\n", format);
332 debug ("num of controller: %x\n", num_ctlrs);
333 debug ("offset of hpc data structure enteries: %x\n ", sub_addr);
334
335 sub_addr = base + re; /* re sub blk */
336 /* FIXME: rc is never used/checked */
337 rc = readw (io_mem + sub_addr); /* next sub blk */
338
339 sub_addr += 2;
340 re_id = readw (io_mem + sub_addr); /* sub blk id */
341
342 sub_addr += 2;
343 if (re_id != 0x5245)
344 goto error_nodev;
345
346 /* signature of re */
347 num_entries = readw (io_mem + sub_addr);
348
349 sub_addr += 2; /* offset of RSRC_ENTRIES blk */
350 rsrc_list_ptr = alloc_ebda_rsrc_list ();
351 if (!rsrc_list_ptr ) {
352 rc = -ENOMEM;
353 goto out;
354 }
355 rsrc_list_ptr->format = format;
356 rsrc_list_ptr->num_entries = num_entries;
357 rsrc_list_ptr->phys_addr = sub_addr;
358
359 debug ("info about rsrc descriptor---\n");
360 debug ("format: %x\n", format);
361 debug ("num of rsrc: %x\n", num_entries);
362 debug ("offset of rsrc data structure enteries: %x\n ", sub_addr);
363
364 hs_complete = 1;
365 } else {
366 /* found rio table, blk_id == 0x4752 */
367 debug ("now enter io table ---\n");
368 debug ("rio blk id: %x\n", blk_id);
369
370 rio_table_ptr = kzalloc(sizeof(struct rio_table_hdr), GFP_KERNEL);
371 if (!rio_table_ptr) {
372 rc = -ENOMEM;
373 goto out;
374 }
375 rio_table_ptr->ver_num = readb (io_mem + offset);
376 rio_table_ptr->scal_count = readb (io_mem + offset + 1);
377 rio_table_ptr->riodev_count = readb (io_mem + offset + 2);
378 rio_table_ptr->offset = offset +3 ;
379
380 debug("info about rio table hdr ---\n");
381 debug("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ",
382 rio_table_ptr->ver_num, rio_table_ptr->scal_count,
383 rio_table_ptr->riodev_count, rio_table_ptr->offset);
384
385 rio_complete = 1;
386 }
387 }
388
389 if (!hs_complete && !rio_complete)
390 goto error_nodev;
391
392 if (rio_table_ptr) {
393 if (rio_complete && rio_table_ptr->ver_num == 3) {
394 rc = ebda_rio_table ();
395 if (rc)
396 goto out;
397 }
398 }
399 rc = ebda_rsrc_controller ();
400 if (rc)
401 goto out;
402
403 rc = ebda_rsrc_rsrc ();
404 goto out;
405error_nodev:
406 rc = -ENODEV;
407out:
408 iounmap (io_mem);
409 return rc;
410}
411
412/*
413 * map info of scalability details and rio details from physical address
414 */
415static int __init ebda_rio_table (void)
416{
417 u16 offset;
418 u8 i;
419 struct rio_detail *rio_detail_ptr;
420
421 offset = rio_table_ptr->offset;
422 offset += 12 * rio_table_ptr->scal_count;
423
424 // we do concern about rio details
425 for (i = 0; i < rio_table_ptr->riodev_count; i++) {
426 rio_detail_ptr = kzalloc(sizeof(struct rio_detail), GFP_KERNEL);
427 if (!rio_detail_ptr)
428 return -ENOMEM;
429 rio_detail_ptr->rio_node_id = readb (io_mem + offset);
430 rio_detail_ptr->bbar = readl (io_mem + offset + 1);
431 rio_detail_ptr->rio_type = readb (io_mem + offset + 5);
432 rio_detail_ptr->owner_id = readb (io_mem + offset + 6);
433 rio_detail_ptr->port0_node_connect = readb (io_mem + offset + 7);
434 rio_detail_ptr->port0_port_connect = readb (io_mem + offset + 8);
435 rio_detail_ptr->port1_node_connect = readb (io_mem + offset + 9);
436 rio_detail_ptr->port1_port_connect = readb (io_mem + offset + 10);
437 rio_detail_ptr->first_slot_num = readb (io_mem + offset + 11);
438 rio_detail_ptr->status = readb (io_mem + offset + 12);
439 rio_detail_ptr->wpindex = readb (io_mem + offset + 13);
440 rio_detail_ptr->chassis_num = readb (io_mem + offset + 14);
441// debug ("rio_node_id: %x\nbbar: %x\nrio_type: %x\nowner_id: %x\nport0_node: %x\nport0_port: %x\nport1_node: %x\nport1_port: %x\nfirst_slot_num: %x\nstatus: %x\n", rio_detail_ptr->rio_node_id, rio_detail_ptr->bbar, rio_detail_ptr->rio_type, rio_detail_ptr->owner_id, rio_detail_ptr->port0_node_connect, rio_detail_ptr->port0_port_connect, rio_detail_ptr->port1_node_connect, rio_detail_ptr->port1_port_connect, rio_detail_ptr->first_slot_num, rio_detail_ptr->status);
442 //create linked list of chassis
443 if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5)
444 list_add (&rio_detail_ptr->rio_detail_list, &rio_vg_head);
445 //create linked list of expansion box
446 else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7)
447 list_add (&rio_detail_ptr->rio_detail_list, &rio_lo_head);
448 else
449 // not in my concern
450 kfree (rio_detail_ptr);
451 offset += 15;
452 }
453 print_lo_info ();
454 print_vg_info ();
455 return 0;
456}
457
458/*
459 * reorganizing linked list of chassis
460 */
461static struct opt_rio *search_opt_vg (u8 chassis_num)
462{
463 struct opt_rio *ptr;
464 list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) {
465 if (ptr->chassis_num == chassis_num)
466 return ptr;
467 }
468 return NULL;
469}
470
471static int __init combine_wpg_for_chassis (void)
472{
473 struct opt_rio *opt_rio_ptr = NULL;
474 struct rio_detail *rio_detail_ptr = NULL;
475
476 list_for_each_entry(rio_detail_ptr, &rio_vg_head, rio_detail_list) {
477 opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num);
478 if (!opt_rio_ptr) {
479 opt_rio_ptr = kzalloc(sizeof(struct opt_rio), GFP_KERNEL);
480 if (!opt_rio_ptr)
481 return -ENOMEM;
482 opt_rio_ptr->rio_type = rio_detail_ptr->rio_type;
483 opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num;
484 opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
485 opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num;
486 list_add (&opt_rio_ptr->opt_rio_list, &opt_vg_head);
487 } else {
488 opt_rio_ptr->first_slot_num = min (opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
489 opt_rio_ptr->middle_num = max (opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num);
490 }
491 }
492 print_opt_vg ();
493 return 0;
494}
495
496/*
497 * reorganizing linked list of expansion box
498 */
499static struct opt_rio_lo *search_opt_lo (u8 chassis_num)
500{
501 struct opt_rio_lo *ptr;
502 list_for_each_entry(ptr, &opt_lo_head, opt_rio_lo_list) {
503 if (ptr->chassis_num == chassis_num)
504 return ptr;
505 }
506 return NULL;
507}
508
509static int combine_wpg_for_expansion (void)
510{
511 struct opt_rio_lo *opt_rio_lo_ptr = NULL;
512 struct rio_detail *rio_detail_ptr = NULL;
513
514 list_for_each_entry(rio_detail_ptr, &rio_lo_head, rio_detail_list) {
515 opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num);
516 if (!opt_rio_lo_ptr) {
517 opt_rio_lo_ptr = kzalloc(sizeof(struct opt_rio_lo), GFP_KERNEL);
518 if (!opt_rio_lo_ptr)
519 return -ENOMEM;
520 opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type;
521 opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num;
522 opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
523 opt_rio_lo_ptr->middle_num = rio_detail_ptr->first_slot_num;
524 opt_rio_lo_ptr->pack_count = 1;
525
526 list_add (&opt_rio_lo_ptr->opt_rio_lo_list, &opt_lo_head);
527 } else {
528 opt_rio_lo_ptr->first_slot_num = min (opt_rio_lo_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
529 opt_rio_lo_ptr->middle_num = max (opt_rio_lo_ptr->middle_num, rio_detail_ptr->first_slot_num);
530 opt_rio_lo_ptr->pack_count = 2;
531 }
532 }
533 return 0;
534}
535
536
537/* Since we don't know the max slot number per each chassis, hence go
538 * through the list of all chassis to find out the range
539 * Arguments: slot_num, 1st slot number of the chassis we think we are on,
540 * var (0 = chassis, 1 = expansion box)
541 */
542static int first_slot_num (u8 slot_num, u8 first_slot, u8 var)
543{
544 struct opt_rio *opt_vg_ptr = NULL;
545 struct opt_rio_lo *opt_lo_ptr = NULL;
546 int rc = 0;
547
548 if (!var) {
549 list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) {
550 if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) {
551 rc = -ENODEV;
552 break;
553 }
554 }
555 } else {
556 list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) {
557 if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) {
558 rc = -ENODEV;
559 break;
560 }
561 }
562 }
563 return rc;
564}
565
566static struct opt_rio_lo * find_rxe_num (u8 slot_num)
567{
568 struct opt_rio_lo *opt_lo_ptr;
569
570 list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) {
571 //check to see if this slot_num belongs to expansion box
572 if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_lo_ptr->first_slot_num, 1)))
573 return opt_lo_ptr;
574 }
575 return NULL;
576}
577
578static struct opt_rio * find_chassis_num (u8 slot_num)
579{
580 struct opt_rio *opt_vg_ptr;
581
582 list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) {
583 //check to see if this slot_num belongs to chassis
584 if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_vg_ptr->first_slot_num, 0)))
585 return opt_vg_ptr;
586 }
587 return NULL;
588}
589
590/* This routine will find out how many slots are in the chassis, so that
591 * the slot numbers for rxe100 would start from 1, and not from 7, or 6 etc
592 */
593static u8 calculate_first_slot (u8 slot_num)
594{
595 u8 first_slot = 1;
596 struct slot * slot_cur;
597
598 list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) {
599 if (slot_cur->ctrl) {
600 if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num))
601 first_slot = slot_cur->ctrl->ending_slot_num;
602 }
603 }
604 return first_slot + 1;
605
606}
607
608#define SLOT_NAME_SIZE 30
609
610static char *create_file_name (struct slot * slot_cur)
611{
612 struct opt_rio *opt_vg_ptr = NULL;
613 struct opt_rio_lo *opt_lo_ptr = NULL;
614 static char str[SLOT_NAME_SIZE];
615 int which = 0; /* rxe = 1, chassis = 0 */
616 u8 number = 1; /* either chassis or rxe # */
617 u8 first_slot = 1;
618 u8 slot_num;
619 u8 flag = 0;
620
621 if (!slot_cur) {
622 err ("Structure passed is empty\n");
623 return NULL;
624 }
625
626 slot_num = slot_cur->number;
627
628 memset (str, 0, sizeof(str));
629
630 if (rio_table_ptr) {
631 if (rio_table_ptr->ver_num == 3) {
632 opt_vg_ptr = find_chassis_num (slot_num);
633 opt_lo_ptr = find_rxe_num (slot_num);
634 }
635 }
636 if (opt_vg_ptr) {
637 if (opt_lo_ptr) {
638 if ((slot_num - opt_vg_ptr->first_slot_num) > (slot_num - opt_lo_ptr->first_slot_num)) {
639 number = opt_lo_ptr->chassis_num;
640 first_slot = opt_lo_ptr->first_slot_num;
641 which = 1; /* it is RXE */
642 } else {
643 first_slot = opt_vg_ptr->first_slot_num;
644 number = opt_vg_ptr->chassis_num;
645 which = 0;
646 }
647 } else {
648 first_slot = opt_vg_ptr->first_slot_num;
649 number = opt_vg_ptr->chassis_num;
650 which = 0;
651 }
652 ++flag;
653 } else if (opt_lo_ptr) {
654 number = opt_lo_ptr->chassis_num;
655 first_slot = opt_lo_ptr->first_slot_num;
656 which = 1;
657 ++flag;
658 } else if (rio_table_ptr) {
659 if (rio_table_ptr->ver_num == 3) {
660 /* if both NULL and we DO have correct RIO table in BIOS */
661 return NULL;
662 }
663 }
664 if (!flag) {
665 if (slot_cur->ctrl->ctlr_type == 4) {
666 first_slot = calculate_first_slot (slot_num);
667 which = 1;
668 } else {
669 which = 0;
670 }
671 }
672
673 sprintf(str, "%s%dslot%d",
674 which == 0 ? "chassis" : "rxe",
675 number, slot_num - first_slot + 1);
676 return str;
677}
678
679static int fillslotinfo(struct hotplug_slot *hotplug_slot)
680{
681 struct slot *slot;
682 int rc = 0;
683
684 if (!hotplug_slot || !hotplug_slot->private)
685 return -EINVAL;
686
687 slot = hotplug_slot->private;
688 rc = ibmphp_hpc_readslot(slot, READ_ALLSTAT, NULL);
689 if (rc)
690 return rc;
691
692 // power - enabled:1 not:0
693 hotplug_slot->info->power_status = SLOT_POWER(slot->status);
694
695 // attention - off:0, on:1, blinking:2
696 hotplug_slot->info->attention_status = SLOT_ATTN(slot->status, slot->ext_status);
697
698 // latch - open:1 closed:0
699 hotplug_slot->info->latch_status = SLOT_LATCH(slot->status);
700
701 // pci board - present:1 not:0
702 if (SLOT_PRESENT (slot->status))
703 hotplug_slot->info->adapter_status = 1;
704 else
705 hotplug_slot->info->adapter_status = 0;
706/*
707 if (slot->bus_on->supported_bus_mode
708 && (slot->bus_on->supported_speed == BUS_SPEED_66))
709 hotplug_slot->info->max_bus_speed_status = BUS_SPEED_66PCIX;
710 else
711 hotplug_slot->info->max_bus_speed_status = slot->bus_on->supported_speed;
712*/
713
714 return rc;
715}
716
717static void release_slot(struct hotplug_slot *hotplug_slot)
718{
719 struct slot *slot;
720
721 if (!hotplug_slot || !hotplug_slot->private)
722 return;
723
724 slot = hotplug_slot->private;
725 kfree(slot->hotplug_slot->info);
726 kfree(slot->hotplug_slot);
727 slot->ctrl = NULL;
728 slot->bus_on = NULL;
729
730 /* we don't want to actually remove the resources, since free_resources will do just that */
731 ibmphp_unconfigure_card(&slot, -1);
732
733 kfree (slot);
734}
735
736static struct pci_driver ibmphp_driver;
737
738/*
739 * map info (ctlr-id, slot count, slot#.. bus count, bus#, ctlr type...) of
740 * each hpc from physical address to a list of hot plug controllers based on
741 * hpc descriptors.
742 */
743static int __init ebda_rsrc_controller (void)
744{
745 u16 addr, addr_slot, addr_bus;
746 u8 ctlr_id, temp, bus_index;
747 u16 ctlr, slot, bus;
748 u16 slot_num, bus_num, index;
749 struct hotplug_slot *hp_slot_ptr;
750 struct controller *hpc_ptr;
751 struct ebda_hpc_bus *bus_ptr;
752 struct ebda_hpc_slot *slot_ptr;
753 struct bus_info *bus_info_ptr1, *bus_info_ptr2;
754 int rc;
755 struct slot *tmp_slot;
756 char name[SLOT_NAME_SIZE];
757
758 addr = hpc_list_ptr->phys_addr;
759 for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) {
760 bus_index = 1;
761 ctlr_id = readb (io_mem + addr);
762 addr += 1;
763 slot_num = readb (io_mem + addr);
764
765 addr += 1;
766 addr_slot = addr; /* offset of slot structure */
767 addr += (slot_num * 4);
768
769 bus_num = readb (io_mem + addr);
770
771 addr += 1;
772 addr_bus = addr; /* offset of bus */
773 addr += (bus_num * 9); /* offset of ctlr_type */
774 temp = readb (io_mem + addr);
775
776 addr += 1;
777 /* init hpc structure */
778 hpc_ptr = alloc_ebda_hpc (slot_num, bus_num);
779 if (!hpc_ptr ) {
780 rc = -ENOMEM;
781 goto error_no_hpc;
782 }
783 hpc_ptr->ctlr_id = ctlr_id;
784 hpc_ptr->ctlr_relative_id = ctlr;
785 hpc_ptr->slot_count = slot_num;
786 hpc_ptr->bus_count = bus_num;
787 debug ("now enter ctlr data struture ---\n");
788 debug ("ctlr id: %x\n", ctlr_id);
789 debug ("ctlr_relative_id: %x\n", hpc_ptr->ctlr_relative_id);
790 debug ("count of slots controlled by this ctlr: %x\n", slot_num);
791 debug ("count of buses controlled by this ctlr: %x\n", bus_num);
792
793 /* init slot structure, fetch slot, bus, cap... */
794 slot_ptr = hpc_ptr->slots;
795 for (slot = 0; slot < slot_num; slot++) {
796 slot_ptr->slot_num = readb (io_mem + addr_slot);
797 slot_ptr->slot_bus_num = readb (io_mem + addr_slot + slot_num);
798 slot_ptr->ctl_index = readb (io_mem + addr_slot + 2*slot_num);
799 slot_ptr->slot_cap = readb (io_mem + addr_slot + 3*slot_num);
800
801 // create bus_info lined list --- if only one slot per bus: slot_min = slot_max
802
803 bus_info_ptr2 = ibmphp_find_same_bus_num (slot_ptr->slot_bus_num);
804 if (!bus_info_ptr2) {
805 bus_info_ptr1 = kzalloc(sizeof(struct bus_info), GFP_KERNEL);
806 if (!bus_info_ptr1) {
807 rc = -ENOMEM;
808 goto error_no_hp_slot;
809 }
810 bus_info_ptr1->slot_min = slot_ptr->slot_num;
811 bus_info_ptr1->slot_max = slot_ptr->slot_num;
812 bus_info_ptr1->slot_count += 1;
813 bus_info_ptr1->busno = slot_ptr->slot_bus_num;
814 bus_info_ptr1->index = bus_index++;
815 bus_info_ptr1->current_speed = 0xff;
816 bus_info_ptr1->current_bus_mode = 0xff;
817
818 bus_info_ptr1->controller_id = hpc_ptr->ctlr_id;
819
820 list_add_tail (&bus_info_ptr1->bus_info_list, &bus_info_head);
821
822 } else {
823 bus_info_ptr2->slot_min = min (bus_info_ptr2->slot_min, slot_ptr->slot_num);
824 bus_info_ptr2->slot_max = max (bus_info_ptr2->slot_max, slot_ptr->slot_num);
825 bus_info_ptr2->slot_count += 1;
826
827 }
828
829 // end of creating the bus_info linked list
830
831 slot_ptr++;
832 addr_slot += 1;
833 }
834
835 /* init bus structure */
836 bus_ptr = hpc_ptr->buses;
837 for (bus = 0; bus < bus_num; bus++) {
838 bus_ptr->bus_num = readb (io_mem + addr_bus + bus);
839 bus_ptr->slots_at_33_conv = readb (io_mem + addr_bus + bus_num + 8 * bus);
840 bus_ptr->slots_at_66_conv = readb (io_mem + addr_bus + bus_num + 8 * bus + 1);
841
842 bus_ptr->slots_at_66_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 2);
843
844 bus_ptr->slots_at_100_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 3);
845
846 bus_ptr->slots_at_133_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 4);
847
848 bus_info_ptr2 = ibmphp_find_same_bus_num (bus_ptr->bus_num);
849 if (bus_info_ptr2) {
850 bus_info_ptr2->slots_at_33_conv = bus_ptr->slots_at_33_conv;
851 bus_info_ptr2->slots_at_66_conv = bus_ptr->slots_at_66_conv;
852 bus_info_ptr2->slots_at_66_pcix = bus_ptr->slots_at_66_pcix;
853 bus_info_ptr2->slots_at_100_pcix = bus_ptr->slots_at_100_pcix;
854 bus_info_ptr2->slots_at_133_pcix = bus_ptr->slots_at_133_pcix;
855 }
856 bus_ptr++;
857 }
858
859 hpc_ptr->ctlr_type = temp;
860
861 switch (hpc_ptr->ctlr_type) {
862 case 1:
863 hpc_ptr->u.pci_ctlr.bus = readb (io_mem + addr);
864 hpc_ptr->u.pci_ctlr.dev_fun = readb (io_mem + addr + 1);
865 hpc_ptr->irq = readb (io_mem + addr + 2);
866 addr += 3;
867 debug ("ctrl bus = %x, ctlr devfun = %x, irq = %x\n",
868 hpc_ptr->u.pci_ctlr.bus,
869 hpc_ptr->u.pci_ctlr.dev_fun, hpc_ptr->irq);
870 break;
871
872 case 0:
873 hpc_ptr->u.isa_ctlr.io_start = readw (io_mem + addr);
874 hpc_ptr->u.isa_ctlr.io_end = readw (io_mem + addr + 2);
875 if (!request_region (hpc_ptr->u.isa_ctlr.io_start,
876 (hpc_ptr->u.isa_ctlr.io_end - hpc_ptr->u.isa_ctlr.io_start + 1),
877 "ibmphp")) {
878 rc = -ENODEV;
879 goto error_no_hp_slot;
880 }
881 hpc_ptr->irq = readb (io_mem + addr + 4);
882 addr += 5;
883 break;
884
885 case 2:
886 case 4:
887 hpc_ptr->u.wpeg_ctlr.wpegbbar = readl (io_mem + addr);
888 hpc_ptr->u.wpeg_ctlr.i2c_addr = readb (io_mem + addr + 4);
889 hpc_ptr->irq = readb (io_mem + addr + 5);
890 addr += 6;
891 break;
892 default:
893 rc = -ENODEV;
894 goto error_no_hp_slot;
895 }
896
897 //reorganize chassis' linked list
898 combine_wpg_for_chassis ();
899 combine_wpg_for_expansion ();
900 hpc_ptr->revision = 0xff;
901 hpc_ptr->options = 0xff;
902 hpc_ptr->starting_slot_num = hpc_ptr->slots[0].slot_num;
903 hpc_ptr->ending_slot_num = hpc_ptr->slots[slot_num-1].slot_num;
904
905 // register slots with hpc core as well as create linked list of ibm slot
906 for (index = 0; index < hpc_ptr->slot_count; index++) {
907
908 hp_slot_ptr = kzalloc(sizeof(*hp_slot_ptr), GFP_KERNEL);
909 if (!hp_slot_ptr) {
910 rc = -ENOMEM;
911 goto error_no_hp_slot;
912 }
913
914 hp_slot_ptr->info = kzalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
915 if (!hp_slot_ptr->info) {
916 rc = -ENOMEM;
917 goto error_no_hp_info;
918 }
919
920 tmp_slot = kzalloc(sizeof(*tmp_slot), GFP_KERNEL);
921 if (!tmp_slot) {
922 rc = -ENOMEM;
923 goto error_no_slot;
924 }
925
926 tmp_slot->flag = 1;
927
928 tmp_slot->capabilities = hpc_ptr->slots[index].slot_cap;
929 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX)
930 tmp_slot->supported_speed = 3;
931 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_100_MAX) == EBDA_SLOT_100_MAX)
932 tmp_slot->supported_speed = 2;
933 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_66_MAX) == EBDA_SLOT_66_MAX)
934 tmp_slot->supported_speed = 1;
935
936 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_PCIX_CAP) == EBDA_SLOT_PCIX_CAP)
937 tmp_slot->supported_bus_mode = 1;
938 else
939 tmp_slot->supported_bus_mode = 0;
940
941
942 tmp_slot->bus = hpc_ptr->slots[index].slot_bus_num;
943
944 bus_info_ptr1 = ibmphp_find_same_bus_num (hpc_ptr->slots[index].slot_bus_num);
945 if (!bus_info_ptr1) {
946 kfree(tmp_slot);
947 rc = -ENODEV;
948 goto error;
949 }
950 tmp_slot->bus_on = bus_info_ptr1;
951 bus_info_ptr1 = NULL;
952 tmp_slot->ctrl = hpc_ptr;
953
954 tmp_slot->ctlr_index = hpc_ptr->slots[index].ctl_index;
955 tmp_slot->number = hpc_ptr->slots[index].slot_num;
956 tmp_slot->hotplug_slot = hp_slot_ptr;
957
958 hp_slot_ptr->private = tmp_slot;
959 hp_slot_ptr->release = release_slot;
960
961 rc = fillslotinfo(hp_slot_ptr);
962 if (rc)
963 goto error;
964
965 rc = ibmphp_init_devno ((struct slot **) &hp_slot_ptr->private);
966 if (rc)
967 goto error;
968 hp_slot_ptr->ops = &ibmphp_hotplug_slot_ops;
969
970 // end of registering ibm slot with hotplug core
971
972 list_add (& ((struct slot *)(hp_slot_ptr->private))->ibm_slot_list, &ibmphp_slot_head);
973 }
974
975 print_bus_info ();
976 list_add (&hpc_ptr->ebda_hpc_list, &ebda_hpc_head );
977
978 } /* each hpc */
979
980 list_for_each_entry(tmp_slot, &ibmphp_slot_head, ibm_slot_list) {
981 snprintf(name, SLOT_NAME_SIZE, "%s", create_file_name(tmp_slot));
982 pci_hp_register(tmp_slot->hotplug_slot,
983 pci_find_bus(0, tmp_slot->bus), tmp_slot->device, name);
984 }
985
986 print_ebda_hpc ();
987 print_ibm_slot ();
988 return 0;
989
990error:
991 kfree (hp_slot_ptr->private);
992error_no_slot:
993 kfree (hp_slot_ptr->info);
994error_no_hp_info:
995 kfree (hp_slot_ptr);
996error_no_hp_slot:
997 free_ebda_hpc (hpc_ptr);
998error_no_hpc:
999 iounmap (io_mem);
1000 return rc;
1001}
1002
1003/*
1004 * map info (bus, devfun, start addr, end addr..) of i/o, memory,
1005 * pfm from the physical addr to a list of resource.
1006 */
1007static int __init ebda_rsrc_rsrc (void)
1008{
1009 u16 addr;
1010 short rsrc;
1011 u8 type, rsrc_type;
1012 struct ebda_pci_rsrc *rsrc_ptr;
1013
1014 addr = rsrc_list_ptr->phys_addr;
1015 debug ("now entering rsrc land\n");
1016 debug ("offset of rsrc: %x\n", rsrc_list_ptr->phys_addr);
1017
1018 for (rsrc = 0; rsrc < rsrc_list_ptr->num_entries; rsrc++) {
1019 type = readb (io_mem + addr);
1020
1021 addr += 1;
1022 rsrc_type = type & EBDA_RSRC_TYPE_MASK;
1023
1024 if (rsrc_type == EBDA_IO_RSRC_TYPE) {
1025 rsrc_ptr = alloc_ebda_pci_rsrc ();
1026 if (!rsrc_ptr) {
1027 iounmap (io_mem);
1028 return -ENOMEM;
1029 }
1030 rsrc_ptr->rsrc_type = type;
1031
1032 rsrc_ptr->bus_num = readb (io_mem + addr);
1033 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1034 rsrc_ptr->start_addr = readw (io_mem + addr + 2);
1035 rsrc_ptr->end_addr = readw (io_mem + addr + 4);
1036 addr += 6;
1037
1038 debug ("rsrc from io type ----\n");
1039 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1040 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1041
1042 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1043 }
1044
1045 if (rsrc_type == EBDA_MEM_RSRC_TYPE || rsrc_type == EBDA_PFM_RSRC_TYPE) {
1046 rsrc_ptr = alloc_ebda_pci_rsrc ();
1047 if (!rsrc_ptr ) {
1048 iounmap (io_mem);
1049 return -ENOMEM;
1050 }
1051 rsrc_ptr->rsrc_type = type;
1052
1053 rsrc_ptr->bus_num = readb (io_mem + addr);
1054 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1055 rsrc_ptr->start_addr = readl (io_mem + addr + 2);
1056 rsrc_ptr->end_addr = readl (io_mem + addr + 6);
1057 addr += 10;
1058
1059 debug ("rsrc from mem or pfm ---\n");
1060 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1061 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1062
1063 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1064 }
1065 }
1066 kfree (rsrc_list_ptr);
1067 rsrc_list_ptr = NULL;
1068 print_ebda_pci_rsrc ();
1069 return 0;
1070}
1071
1072u16 ibmphp_get_total_controllers (void)
1073{
1074 return hpc_list_ptr->num_ctlrs;
1075}
1076
1077struct slot *ibmphp_get_slot_from_physical_num (u8 physical_num)
1078{
1079 struct slot *slot;
1080
1081 list_for_each_entry(slot, &ibmphp_slot_head, ibm_slot_list) {
1082 if (slot->number == physical_num)
1083 return slot;
1084 }
1085 return NULL;
1086}
1087
1088/* To find:
1089 * - the smallest slot number
1090 * - the largest slot number
1091 * - the total number of the slots based on each bus
1092 * (if only one slot per bus slot_min = slot_max )
1093 */
1094struct bus_info *ibmphp_find_same_bus_num (u32 num)
1095{
1096 struct bus_info *ptr;
1097
1098 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
1099 if (ptr->busno == num)
1100 return ptr;
1101 }
1102 return NULL;
1103}
1104
1105/* Finding relative bus number, in order to map corresponding
1106 * bus register
1107 */
1108int ibmphp_get_bus_index (u8 num)
1109{
1110 struct bus_info *ptr;
1111
1112 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
1113 if (ptr->busno == num)
1114 return ptr->index;
1115 }
1116 return -ENODEV;
1117}
1118
1119void ibmphp_free_bus_info_queue (void)
1120{
1121 struct bus_info *bus_info;
1122 struct list_head *list;
1123 struct list_head *next;
1124
1125 list_for_each_safe (list, next, &bus_info_head ) {
1126 bus_info = list_entry (list, struct bus_info, bus_info_list);
1127 kfree (bus_info);
1128 }
1129}
1130
1131void ibmphp_free_ebda_hpc_queue (void)
1132{
1133 struct controller *controller = NULL;
1134 struct list_head *list;
1135 struct list_head *next;
1136 int pci_flag = 0;
1137
1138 list_for_each_safe (list, next, &ebda_hpc_head) {
1139 controller = list_entry (list, struct controller, ebda_hpc_list);
1140 if (controller->ctlr_type == 0)
1141 release_region (controller->u.isa_ctlr.io_start, (controller->u.isa_ctlr.io_end - controller->u.isa_ctlr.io_start + 1));
1142 else if ((controller->ctlr_type == 1) && (!pci_flag)) {
1143 ++pci_flag;
1144 pci_unregister_driver (&ibmphp_driver);
1145 }
1146 free_ebda_hpc (controller);
1147 }
1148}
1149
1150void ibmphp_free_ebda_pci_rsrc_queue (void)
1151{
1152 struct ebda_pci_rsrc *resource;
1153 struct list_head *list;
1154 struct list_head *next;
1155
1156 list_for_each_safe (list, next, &ibmphp_ebda_pci_rsrc_head) {
1157 resource = list_entry (list, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
1158 kfree (resource);
1159 resource = NULL;
1160 }
1161}
1162
1163static struct pci_device_id id_table[] = {
1164 {
1165 .vendor = PCI_VENDOR_ID_IBM,
1166 .device = HPC_DEVICE_ID,
1167 .subvendor = PCI_VENDOR_ID_IBM,
1168 .subdevice = HPC_SUBSYSTEM_ID,
1169 .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00),
1170 }, {}
1171};
1172
1173MODULE_DEVICE_TABLE(pci, id_table);
1174
1175static int ibmphp_probe (struct pci_dev *, const struct pci_device_id *);
1176static struct pci_driver ibmphp_driver = {
1177 .name = "ibmphp",
1178 .id_table = id_table,
1179 .probe = ibmphp_probe,
1180};
1181
1182int ibmphp_register_pci (void)
1183{
1184 struct controller *ctrl;
1185 int rc = 0;
1186
1187 list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) {
1188 if (ctrl->ctlr_type == 1) {
1189 rc = pci_register_driver(&ibmphp_driver);
1190 break;
1191 }
1192 }
1193 return rc;
1194}
1195static int ibmphp_probe (struct pci_dev * dev, const struct pci_device_id *ids)
1196{
1197 struct controller *ctrl;
1198
1199 debug ("inside ibmphp_probe\n");
1200
1201 list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) {
1202 if (ctrl->ctlr_type == 1) {
1203 if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) {
1204 ctrl->ctrl_dev = dev;
1205 debug ("found device!!!\n");
1206 debug ("dev->device = %x, dev->subsystem_device = %x\n", dev->device, dev->subsystem_device);
1207 return 0;
1208 }
1209 }
1210 }
1211 return -ENODEV;
1212}
1213
1/*
2 * IBM Hot Plug Controller Driver
3 *
4 * Written By: Tong Yu, IBM Corporation
5 *
6 * Copyright (C) 2001,2003 Greg Kroah-Hartman (greg@kroah.com)
7 * Copyright (C) 2001-2003 IBM Corp.
8 *
9 * All rights reserved.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or (at
14 * your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
19 * NON INFRINGEMENT. See the GNU General Public License for more
20 * details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 *
26 * Send feedback to <gregkh@us.ibm.com>
27 *
28 */
29
30#include <linux/module.h>
31#include <linux/errno.h>
32#include <linux/mm.h>
33#include <linux/slab.h>
34#include <linux/pci.h>
35#include <linux/list.h>
36#include <linux/init.h>
37#include "ibmphp.h"
38
39/*
40 * POST builds data blocks(in this data block definition, a char-1
41 * byte, short(or word)-2 byte, long(dword)-4 byte) in the Extended
42 * BIOS Data Area which describe the configuration of the hot-plug
43 * controllers and resources used by the PCI Hot-Plug devices.
44 *
45 * This file walks EBDA, maps data block from physical addr,
46 * reconstruct linked lists about all system resource(MEM, PFM, IO)
47 * already assigned by POST, as well as linked lists about hot plug
48 * controllers (ctlr#, slot#, bus&slot features...)
49 */
50
51/* Global lists */
52LIST_HEAD(ibmphp_ebda_pci_rsrc_head);
53LIST_HEAD(ibmphp_slot_head);
54
55/* Local variables */
56static struct ebda_hpc_list *hpc_list_ptr;
57static struct ebda_rsrc_list *rsrc_list_ptr;
58static struct rio_table_hdr *rio_table_ptr = NULL;
59static LIST_HEAD(ebda_hpc_head);
60static LIST_HEAD(bus_info_head);
61static LIST_HEAD(rio_vg_head);
62static LIST_HEAD(rio_lo_head);
63static LIST_HEAD(opt_vg_head);
64static LIST_HEAD(opt_lo_head);
65static void __iomem *io_mem;
66
67/* Local functions */
68static int ebda_rsrc_controller(void);
69static int ebda_rsrc_rsrc(void);
70static int ebda_rio_table(void);
71
72static struct ebda_hpc_list * __init alloc_ebda_hpc_list(void)
73{
74 return kzalloc(sizeof(struct ebda_hpc_list), GFP_KERNEL);
75}
76
77static struct controller *alloc_ebda_hpc(u32 slot_count, u32 bus_count)
78{
79 struct controller *controller;
80 struct ebda_hpc_slot *slots;
81 struct ebda_hpc_bus *buses;
82
83 controller = kzalloc(sizeof(struct controller), GFP_KERNEL);
84 if (!controller)
85 goto error;
86
87 slots = kcalloc(slot_count, sizeof(struct ebda_hpc_slot), GFP_KERNEL);
88 if (!slots)
89 goto error_contr;
90 controller->slots = slots;
91
92 buses = kcalloc(bus_count, sizeof(struct ebda_hpc_bus), GFP_KERNEL);
93 if (!buses)
94 goto error_slots;
95 controller->buses = buses;
96
97 return controller;
98error_slots:
99 kfree(controller->slots);
100error_contr:
101 kfree(controller);
102error:
103 return NULL;
104}
105
106static void free_ebda_hpc(struct controller *controller)
107{
108 kfree(controller->slots);
109 kfree(controller->buses);
110 kfree(controller);
111}
112
113static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list(void)
114{
115 return kzalloc(sizeof(struct ebda_rsrc_list), GFP_KERNEL);
116}
117
118static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc(void)
119{
120 return kzalloc(sizeof(struct ebda_pci_rsrc), GFP_KERNEL);
121}
122
123static void __init print_bus_info(void)
124{
125 struct bus_info *ptr;
126
127 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
128 debug("%s - slot_min = %x\n", __func__, ptr->slot_min);
129 debug("%s - slot_max = %x\n", __func__, ptr->slot_max);
130 debug("%s - slot_count = %x\n", __func__, ptr->slot_count);
131 debug("%s - bus# = %x\n", __func__, ptr->busno);
132 debug("%s - current_speed = %x\n", __func__, ptr->current_speed);
133 debug("%s - controller_id = %x\n", __func__, ptr->controller_id);
134
135 debug("%s - slots_at_33_conv = %x\n", __func__, ptr->slots_at_33_conv);
136 debug("%s - slots_at_66_conv = %x\n", __func__, ptr->slots_at_66_conv);
137 debug("%s - slots_at_66_pcix = %x\n", __func__, ptr->slots_at_66_pcix);
138 debug("%s - slots_at_100_pcix = %x\n", __func__, ptr->slots_at_100_pcix);
139 debug("%s - slots_at_133_pcix = %x\n", __func__, ptr->slots_at_133_pcix);
140
141 }
142}
143
144static void print_lo_info(void)
145{
146 struct rio_detail *ptr;
147 debug("print_lo_info ----\n");
148 list_for_each_entry(ptr, &rio_lo_head, rio_detail_list) {
149 debug("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id);
150 debug("%s - rio_type = %x\n", __func__, ptr->rio_type);
151 debug("%s - owner_id = %x\n", __func__, ptr->owner_id);
152 debug("%s - first_slot_num = %x\n", __func__, ptr->first_slot_num);
153 debug("%s - wpindex = %x\n", __func__, ptr->wpindex);
154 debug("%s - chassis_num = %x\n", __func__, ptr->chassis_num);
155
156 }
157}
158
159static void print_vg_info(void)
160{
161 struct rio_detail *ptr;
162 debug("%s ---\n", __func__);
163 list_for_each_entry(ptr, &rio_vg_head, rio_detail_list) {
164 debug("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id);
165 debug("%s - rio_type = %x\n", __func__, ptr->rio_type);
166 debug("%s - owner_id = %x\n", __func__, ptr->owner_id);
167 debug("%s - first_slot_num = %x\n", __func__, ptr->first_slot_num);
168 debug("%s - wpindex = %x\n", __func__, ptr->wpindex);
169 debug("%s - chassis_num = %x\n", __func__, ptr->chassis_num);
170
171 }
172}
173
174static void __init print_ebda_pci_rsrc(void)
175{
176 struct ebda_pci_rsrc *ptr;
177
178 list_for_each_entry(ptr, &ibmphp_ebda_pci_rsrc_head, ebda_pci_rsrc_list) {
179 debug("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
180 __func__, ptr->rsrc_type, ptr->bus_num, ptr->dev_fun, ptr->start_addr, ptr->end_addr);
181 }
182}
183
184static void __init print_ibm_slot(void)
185{
186 struct slot *ptr;
187
188 list_for_each_entry(ptr, &ibmphp_slot_head, ibm_slot_list) {
189 debug("%s - slot_number: %x\n", __func__, ptr->number);
190 }
191}
192
193static void __init print_opt_vg(void)
194{
195 struct opt_rio *ptr;
196 debug("%s ---\n", __func__);
197 list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) {
198 debug("%s - rio_type %x\n", __func__, ptr->rio_type);
199 debug("%s - chassis_num: %x\n", __func__, ptr->chassis_num);
200 debug("%s - first_slot_num: %x\n", __func__, ptr->first_slot_num);
201 debug("%s - middle_num: %x\n", __func__, ptr->middle_num);
202 }
203}
204
205static void __init print_ebda_hpc(void)
206{
207 struct controller *hpc_ptr;
208 u16 index;
209
210 list_for_each_entry(hpc_ptr, &ebda_hpc_head, ebda_hpc_list) {
211 for (index = 0; index < hpc_ptr->slot_count; index++) {
212 debug("%s - physical slot#: %x\n", __func__, hpc_ptr->slots[index].slot_num);
213 debug("%s - pci bus# of the slot: %x\n", __func__, hpc_ptr->slots[index].slot_bus_num);
214 debug("%s - index into ctlr addr: %x\n", __func__, hpc_ptr->slots[index].ctl_index);
215 debug("%s - cap of the slot: %x\n", __func__, hpc_ptr->slots[index].slot_cap);
216 }
217
218 for (index = 0; index < hpc_ptr->bus_count; index++)
219 debug("%s - bus# of each bus controlled by this ctlr: %x\n", __func__, hpc_ptr->buses[index].bus_num);
220
221 debug("%s - type of hpc: %x\n", __func__, hpc_ptr->ctlr_type);
222 switch (hpc_ptr->ctlr_type) {
223 case 1:
224 debug("%s - bus: %x\n", __func__, hpc_ptr->u.pci_ctlr.bus);
225 debug("%s - dev_fun: %x\n", __func__, hpc_ptr->u.pci_ctlr.dev_fun);
226 debug("%s - irq: %x\n", __func__, hpc_ptr->irq);
227 break;
228
229 case 0:
230 debug("%s - io_start: %x\n", __func__, hpc_ptr->u.isa_ctlr.io_start);
231 debug("%s - io_end: %x\n", __func__, hpc_ptr->u.isa_ctlr.io_end);
232 debug("%s - irq: %x\n", __func__, hpc_ptr->irq);
233 break;
234
235 case 2:
236 case 4:
237 debug("%s - wpegbbar: %lx\n", __func__, hpc_ptr->u.wpeg_ctlr.wpegbbar);
238 debug("%s - i2c_addr: %x\n", __func__, hpc_ptr->u.wpeg_ctlr.i2c_addr);
239 debug("%s - irq: %x\n", __func__, hpc_ptr->irq);
240 break;
241 }
242 }
243}
244
245int __init ibmphp_access_ebda(void)
246{
247 u8 format, num_ctlrs, rio_complete, hs_complete, ebda_sz;
248 u16 ebda_seg, num_entries, next_offset, offset, blk_id, sub_addr, re, rc_id, re_id, base;
249 int rc = 0;
250
251
252 rio_complete = 0;
253 hs_complete = 0;
254
255 io_mem = ioremap((0x40 << 4) + 0x0e, 2);
256 if (!io_mem)
257 return -ENOMEM;
258 ebda_seg = readw(io_mem);
259 iounmap(io_mem);
260 debug("returned ebda segment: %x\n", ebda_seg);
261
262 io_mem = ioremap(ebda_seg<<4, 1);
263 if (!io_mem)
264 return -ENOMEM;
265 ebda_sz = readb(io_mem);
266 iounmap(io_mem);
267 debug("ebda size: %d(KiB)\n", ebda_sz);
268 if (ebda_sz == 0)
269 return -ENOMEM;
270
271 io_mem = ioremap(ebda_seg<<4, (ebda_sz * 1024));
272 if (!io_mem)
273 return -ENOMEM;
274 next_offset = 0x180;
275
276 for (;;) {
277 offset = next_offset;
278
279 /* Make sure what we read is still in the mapped section */
280 if (WARN(offset > (ebda_sz * 1024 - 4),
281 "ibmphp_ebda: next read is beyond ebda_sz\n"))
282 break;
283
284 next_offset = readw(io_mem + offset); /* offset of next blk */
285
286 offset += 2;
287 if (next_offset == 0) /* 0 indicate it's last blk */
288 break;
289 blk_id = readw(io_mem + offset); /* this blk id */
290
291 offset += 2;
292 /* check if it is hot swap block or rio block */
293 if (blk_id != 0x4853 && blk_id != 0x4752)
294 continue;
295 /* found hs table */
296 if (blk_id == 0x4853) {
297 debug("now enter hot swap block---\n");
298 debug("hot blk id: %x\n", blk_id);
299 format = readb(io_mem + offset);
300
301 offset += 1;
302 if (format != 4)
303 goto error_nodev;
304 debug("hot blk format: %x\n", format);
305 /* hot swap sub blk */
306 base = offset;
307
308 sub_addr = base;
309 re = readw(io_mem + sub_addr); /* next sub blk */
310
311 sub_addr += 2;
312 rc_id = readw(io_mem + sub_addr); /* sub blk id */
313
314 sub_addr += 2;
315 if (rc_id != 0x5243)
316 goto error_nodev;
317 /* rc sub blk signature */
318 num_ctlrs = readb(io_mem + sub_addr);
319
320 sub_addr += 1;
321 hpc_list_ptr = alloc_ebda_hpc_list();
322 if (!hpc_list_ptr) {
323 rc = -ENOMEM;
324 goto out;
325 }
326 hpc_list_ptr->format = format;
327 hpc_list_ptr->num_ctlrs = num_ctlrs;
328 hpc_list_ptr->phys_addr = sub_addr; /* offset of RSRC_CONTROLLER blk */
329 debug("info about hpc descriptor---\n");
330 debug("hot blk format: %x\n", format);
331 debug("num of controller: %x\n", num_ctlrs);
332 debug("offset of hpc data structure entries: %x\n ", sub_addr);
333
334 sub_addr = base + re; /* re sub blk */
335 /* FIXME: rc is never used/checked */
336 rc = readw(io_mem + sub_addr); /* next sub blk */
337
338 sub_addr += 2;
339 re_id = readw(io_mem + sub_addr); /* sub blk id */
340
341 sub_addr += 2;
342 if (re_id != 0x5245)
343 goto error_nodev;
344
345 /* signature of re */
346 num_entries = readw(io_mem + sub_addr);
347
348 sub_addr += 2; /* offset of RSRC_ENTRIES blk */
349 rsrc_list_ptr = alloc_ebda_rsrc_list();
350 if (!rsrc_list_ptr) {
351 rc = -ENOMEM;
352 goto out;
353 }
354 rsrc_list_ptr->format = format;
355 rsrc_list_ptr->num_entries = num_entries;
356 rsrc_list_ptr->phys_addr = sub_addr;
357
358 debug("info about rsrc descriptor---\n");
359 debug("format: %x\n", format);
360 debug("num of rsrc: %x\n", num_entries);
361 debug("offset of rsrc data structure entries: %x\n ", sub_addr);
362
363 hs_complete = 1;
364 } else {
365 /* found rio table, blk_id == 0x4752 */
366 debug("now enter io table ---\n");
367 debug("rio blk id: %x\n", blk_id);
368
369 rio_table_ptr = kzalloc(sizeof(struct rio_table_hdr), GFP_KERNEL);
370 if (!rio_table_ptr) {
371 rc = -ENOMEM;
372 goto out;
373 }
374 rio_table_ptr->ver_num = readb(io_mem + offset);
375 rio_table_ptr->scal_count = readb(io_mem + offset + 1);
376 rio_table_ptr->riodev_count = readb(io_mem + offset + 2);
377 rio_table_ptr->offset = offset + 3 ;
378
379 debug("info about rio table hdr ---\n");
380 debug("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ",
381 rio_table_ptr->ver_num, rio_table_ptr->scal_count,
382 rio_table_ptr->riodev_count, rio_table_ptr->offset);
383
384 rio_complete = 1;
385 }
386 }
387
388 if (!hs_complete && !rio_complete)
389 goto error_nodev;
390
391 if (rio_table_ptr) {
392 if (rio_complete && rio_table_ptr->ver_num == 3) {
393 rc = ebda_rio_table();
394 if (rc)
395 goto out;
396 }
397 }
398 rc = ebda_rsrc_controller();
399 if (rc)
400 goto out;
401
402 rc = ebda_rsrc_rsrc();
403 goto out;
404error_nodev:
405 rc = -ENODEV;
406out:
407 iounmap(io_mem);
408 return rc;
409}
410
411/*
412 * map info of scalability details and rio details from physical address
413 */
414static int __init ebda_rio_table(void)
415{
416 u16 offset;
417 u8 i;
418 struct rio_detail *rio_detail_ptr;
419
420 offset = rio_table_ptr->offset;
421 offset += 12 * rio_table_ptr->scal_count;
422
423 // we do concern about rio details
424 for (i = 0; i < rio_table_ptr->riodev_count; i++) {
425 rio_detail_ptr = kzalloc(sizeof(struct rio_detail), GFP_KERNEL);
426 if (!rio_detail_ptr)
427 return -ENOMEM;
428 rio_detail_ptr->rio_node_id = readb(io_mem + offset);
429 rio_detail_ptr->bbar = readl(io_mem + offset + 1);
430 rio_detail_ptr->rio_type = readb(io_mem + offset + 5);
431 rio_detail_ptr->owner_id = readb(io_mem + offset + 6);
432 rio_detail_ptr->port0_node_connect = readb(io_mem + offset + 7);
433 rio_detail_ptr->port0_port_connect = readb(io_mem + offset + 8);
434 rio_detail_ptr->port1_node_connect = readb(io_mem + offset + 9);
435 rio_detail_ptr->port1_port_connect = readb(io_mem + offset + 10);
436 rio_detail_ptr->first_slot_num = readb(io_mem + offset + 11);
437 rio_detail_ptr->status = readb(io_mem + offset + 12);
438 rio_detail_ptr->wpindex = readb(io_mem + offset + 13);
439 rio_detail_ptr->chassis_num = readb(io_mem + offset + 14);
440// debug("rio_node_id: %x\nbbar: %x\nrio_type: %x\nowner_id: %x\nport0_node: %x\nport0_port: %x\nport1_node: %x\nport1_port: %x\nfirst_slot_num: %x\nstatus: %x\n", rio_detail_ptr->rio_node_id, rio_detail_ptr->bbar, rio_detail_ptr->rio_type, rio_detail_ptr->owner_id, rio_detail_ptr->port0_node_connect, rio_detail_ptr->port0_port_connect, rio_detail_ptr->port1_node_connect, rio_detail_ptr->port1_port_connect, rio_detail_ptr->first_slot_num, rio_detail_ptr->status);
441 //create linked list of chassis
442 if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5)
443 list_add(&rio_detail_ptr->rio_detail_list, &rio_vg_head);
444 //create linked list of expansion box
445 else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7)
446 list_add(&rio_detail_ptr->rio_detail_list, &rio_lo_head);
447 else
448 // not in my concern
449 kfree(rio_detail_ptr);
450 offset += 15;
451 }
452 print_lo_info();
453 print_vg_info();
454 return 0;
455}
456
457/*
458 * reorganizing linked list of chassis
459 */
460static struct opt_rio *search_opt_vg(u8 chassis_num)
461{
462 struct opt_rio *ptr;
463 list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) {
464 if (ptr->chassis_num == chassis_num)
465 return ptr;
466 }
467 return NULL;
468}
469
470static int __init combine_wpg_for_chassis(void)
471{
472 struct opt_rio *opt_rio_ptr = NULL;
473 struct rio_detail *rio_detail_ptr = NULL;
474
475 list_for_each_entry(rio_detail_ptr, &rio_vg_head, rio_detail_list) {
476 opt_rio_ptr = search_opt_vg(rio_detail_ptr->chassis_num);
477 if (!opt_rio_ptr) {
478 opt_rio_ptr = kzalloc(sizeof(struct opt_rio), GFP_KERNEL);
479 if (!opt_rio_ptr)
480 return -ENOMEM;
481 opt_rio_ptr->rio_type = rio_detail_ptr->rio_type;
482 opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num;
483 opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
484 opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num;
485 list_add(&opt_rio_ptr->opt_rio_list, &opt_vg_head);
486 } else {
487 opt_rio_ptr->first_slot_num = min(opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
488 opt_rio_ptr->middle_num = max(opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num);
489 }
490 }
491 print_opt_vg();
492 return 0;
493}
494
495/*
496 * reorganizing linked list of expansion box
497 */
498static struct opt_rio_lo *search_opt_lo(u8 chassis_num)
499{
500 struct opt_rio_lo *ptr;
501 list_for_each_entry(ptr, &opt_lo_head, opt_rio_lo_list) {
502 if (ptr->chassis_num == chassis_num)
503 return ptr;
504 }
505 return NULL;
506}
507
508static int combine_wpg_for_expansion(void)
509{
510 struct opt_rio_lo *opt_rio_lo_ptr = NULL;
511 struct rio_detail *rio_detail_ptr = NULL;
512
513 list_for_each_entry(rio_detail_ptr, &rio_lo_head, rio_detail_list) {
514 opt_rio_lo_ptr = search_opt_lo(rio_detail_ptr->chassis_num);
515 if (!opt_rio_lo_ptr) {
516 opt_rio_lo_ptr = kzalloc(sizeof(struct opt_rio_lo), GFP_KERNEL);
517 if (!opt_rio_lo_ptr)
518 return -ENOMEM;
519 opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type;
520 opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num;
521 opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
522 opt_rio_lo_ptr->middle_num = rio_detail_ptr->first_slot_num;
523 opt_rio_lo_ptr->pack_count = 1;
524
525 list_add(&opt_rio_lo_ptr->opt_rio_lo_list, &opt_lo_head);
526 } else {
527 opt_rio_lo_ptr->first_slot_num = min(opt_rio_lo_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
528 opt_rio_lo_ptr->middle_num = max(opt_rio_lo_ptr->middle_num, rio_detail_ptr->first_slot_num);
529 opt_rio_lo_ptr->pack_count = 2;
530 }
531 }
532 return 0;
533}
534
535
536/* Since we don't know the max slot number per each chassis, hence go
537 * through the list of all chassis to find out the range
538 * Arguments: slot_num, 1st slot number of the chassis we think we are on,
539 * var (0 = chassis, 1 = expansion box)
540 */
541static int first_slot_num(u8 slot_num, u8 first_slot, u8 var)
542{
543 struct opt_rio *opt_vg_ptr = NULL;
544 struct opt_rio_lo *opt_lo_ptr = NULL;
545 int rc = 0;
546
547 if (!var) {
548 list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) {
549 if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) {
550 rc = -ENODEV;
551 break;
552 }
553 }
554 } else {
555 list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) {
556 if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) {
557 rc = -ENODEV;
558 break;
559 }
560 }
561 }
562 return rc;
563}
564
565static struct opt_rio_lo *find_rxe_num(u8 slot_num)
566{
567 struct opt_rio_lo *opt_lo_ptr;
568
569 list_for_each_entry(opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) {
570 //check to see if this slot_num belongs to expansion box
571 if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num(slot_num, opt_lo_ptr->first_slot_num, 1)))
572 return opt_lo_ptr;
573 }
574 return NULL;
575}
576
577static struct opt_rio *find_chassis_num(u8 slot_num)
578{
579 struct opt_rio *opt_vg_ptr;
580
581 list_for_each_entry(opt_vg_ptr, &opt_vg_head, opt_rio_list) {
582 //check to see if this slot_num belongs to chassis
583 if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num(slot_num, opt_vg_ptr->first_slot_num, 0)))
584 return opt_vg_ptr;
585 }
586 return NULL;
587}
588
589/* This routine will find out how many slots are in the chassis, so that
590 * the slot numbers for rxe100 would start from 1, and not from 7, or 6 etc
591 */
592static u8 calculate_first_slot(u8 slot_num)
593{
594 u8 first_slot = 1;
595 struct slot *slot_cur;
596
597 list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) {
598 if (slot_cur->ctrl) {
599 if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num))
600 first_slot = slot_cur->ctrl->ending_slot_num;
601 }
602 }
603 return first_slot + 1;
604
605}
606
607#define SLOT_NAME_SIZE 30
608
609static char *create_file_name(struct slot *slot_cur)
610{
611 struct opt_rio *opt_vg_ptr = NULL;
612 struct opt_rio_lo *opt_lo_ptr = NULL;
613 static char str[SLOT_NAME_SIZE];
614 int which = 0; /* rxe = 1, chassis = 0 */
615 u8 number = 1; /* either chassis or rxe # */
616 u8 first_slot = 1;
617 u8 slot_num;
618 u8 flag = 0;
619
620 if (!slot_cur) {
621 err("Structure passed is empty\n");
622 return NULL;
623 }
624
625 slot_num = slot_cur->number;
626
627 memset(str, 0, sizeof(str));
628
629 if (rio_table_ptr) {
630 if (rio_table_ptr->ver_num == 3) {
631 opt_vg_ptr = find_chassis_num(slot_num);
632 opt_lo_ptr = find_rxe_num(slot_num);
633 }
634 }
635 if (opt_vg_ptr) {
636 if (opt_lo_ptr) {
637 if ((slot_num - opt_vg_ptr->first_slot_num) > (slot_num - opt_lo_ptr->first_slot_num)) {
638 number = opt_lo_ptr->chassis_num;
639 first_slot = opt_lo_ptr->first_slot_num;
640 which = 1; /* it is RXE */
641 } else {
642 first_slot = opt_vg_ptr->first_slot_num;
643 number = opt_vg_ptr->chassis_num;
644 which = 0;
645 }
646 } else {
647 first_slot = opt_vg_ptr->first_slot_num;
648 number = opt_vg_ptr->chassis_num;
649 which = 0;
650 }
651 ++flag;
652 } else if (opt_lo_ptr) {
653 number = opt_lo_ptr->chassis_num;
654 first_slot = opt_lo_ptr->first_slot_num;
655 which = 1;
656 ++flag;
657 } else if (rio_table_ptr) {
658 if (rio_table_ptr->ver_num == 3) {
659 /* if both NULL and we DO have correct RIO table in BIOS */
660 return NULL;
661 }
662 }
663 if (!flag) {
664 if (slot_cur->ctrl->ctlr_type == 4) {
665 first_slot = calculate_first_slot(slot_num);
666 which = 1;
667 } else {
668 which = 0;
669 }
670 }
671
672 sprintf(str, "%s%dslot%d",
673 which == 0 ? "chassis" : "rxe",
674 number, slot_num - first_slot + 1);
675 return str;
676}
677
678static int fillslotinfo(struct hotplug_slot *hotplug_slot)
679{
680 struct slot *slot;
681 int rc = 0;
682
683 if (!hotplug_slot || !hotplug_slot->private)
684 return -EINVAL;
685
686 slot = hotplug_slot->private;
687 rc = ibmphp_hpc_readslot(slot, READ_ALLSTAT, NULL);
688 if (rc)
689 return rc;
690
691 // power - enabled:1 not:0
692 hotplug_slot->info->power_status = SLOT_POWER(slot->status);
693
694 // attention - off:0, on:1, blinking:2
695 hotplug_slot->info->attention_status = SLOT_ATTN(slot->status, slot->ext_status);
696
697 // latch - open:1 closed:0
698 hotplug_slot->info->latch_status = SLOT_LATCH(slot->status);
699
700 // pci board - present:1 not:0
701 if (SLOT_PRESENT(slot->status))
702 hotplug_slot->info->adapter_status = 1;
703 else
704 hotplug_slot->info->adapter_status = 0;
705/*
706 if (slot->bus_on->supported_bus_mode
707 && (slot->bus_on->supported_speed == BUS_SPEED_66))
708 hotplug_slot->info->max_bus_speed_status = BUS_SPEED_66PCIX;
709 else
710 hotplug_slot->info->max_bus_speed_status = slot->bus_on->supported_speed;
711*/
712
713 return rc;
714}
715
716static void release_slot(struct hotplug_slot *hotplug_slot)
717{
718 struct slot *slot;
719
720 if (!hotplug_slot || !hotplug_slot->private)
721 return;
722
723 slot = hotplug_slot->private;
724 kfree(slot->hotplug_slot->info);
725 kfree(slot->hotplug_slot);
726 slot->ctrl = NULL;
727 slot->bus_on = NULL;
728
729 /* we don't want to actually remove the resources, since free_resources will do just that */
730 ibmphp_unconfigure_card(&slot, -1);
731
732 kfree(slot);
733}
734
735static struct pci_driver ibmphp_driver;
736
737/*
738 * map info (ctlr-id, slot count, slot#.. bus count, bus#, ctlr type...) of
739 * each hpc from physical address to a list of hot plug controllers based on
740 * hpc descriptors.
741 */
742static int __init ebda_rsrc_controller(void)
743{
744 u16 addr, addr_slot, addr_bus;
745 u8 ctlr_id, temp, bus_index;
746 u16 ctlr, slot, bus;
747 u16 slot_num, bus_num, index;
748 struct hotplug_slot *hp_slot_ptr;
749 struct controller *hpc_ptr;
750 struct ebda_hpc_bus *bus_ptr;
751 struct ebda_hpc_slot *slot_ptr;
752 struct bus_info *bus_info_ptr1, *bus_info_ptr2;
753 int rc;
754 struct slot *tmp_slot;
755 char name[SLOT_NAME_SIZE];
756
757 addr = hpc_list_ptr->phys_addr;
758 for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) {
759 bus_index = 1;
760 ctlr_id = readb(io_mem + addr);
761 addr += 1;
762 slot_num = readb(io_mem + addr);
763
764 addr += 1;
765 addr_slot = addr; /* offset of slot structure */
766 addr += (slot_num * 4);
767
768 bus_num = readb(io_mem + addr);
769
770 addr += 1;
771 addr_bus = addr; /* offset of bus */
772 addr += (bus_num * 9); /* offset of ctlr_type */
773 temp = readb(io_mem + addr);
774
775 addr += 1;
776 /* init hpc structure */
777 hpc_ptr = alloc_ebda_hpc(slot_num, bus_num);
778 if (!hpc_ptr) {
779 rc = -ENOMEM;
780 goto error_no_hpc;
781 }
782 hpc_ptr->ctlr_id = ctlr_id;
783 hpc_ptr->ctlr_relative_id = ctlr;
784 hpc_ptr->slot_count = slot_num;
785 hpc_ptr->bus_count = bus_num;
786 debug("now enter ctlr data structure ---\n");
787 debug("ctlr id: %x\n", ctlr_id);
788 debug("ctlr_relative_id: %x\n", hpc_ptr->ctlr_relative_id);
789 debug("count of slots controlled by this ctlr: %x\n", slot_num);
790 debug("count of buses controlled by this ctlr: %x\n", bus_num);
791
792 /* init slot structure, fetch slot, bus, cap... */
793 slot_ptr = hpc_ptr->slots;
794 for (slot = 0; slot < slot_num; slot++) {
795 slot_ptr->slot_num = readb(io_mem + addr_slot);
796 slot_ptr->slot_bus_num = readb(io_mem + addr_slot + slot_num);
797 slot_ptr->ctl_index = readb(io_mem + addr_slot + 2*slot_num);
798 slot_ptr->slot_cap = readb(io_mem + addr_slot + 3*slot_num);
799
800 // create bus_info lined list --- if only one slot per bus: slot_min = slot_max
801
802 bus_info_ptr2 = ibmphp_find_same_bus_num(slot_ptr->slot_bus_num);
803 if (!bus_info_ptr2) {
804 bus_info_ptr1 = kzalloc(sizeof(struct bus_info), GFP_KERNEL);
805 if (!bus_info_ptr1) {
806 rc = -ENOMEM;
807 goto error_no_hp_slot;
808 }
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 // end of creating the bus_info linked list
829
830 slot_ptr++;
831 addr_slot += 1;
832 }
833
834 /* init bus structure */
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 //reorganize chassis' linked list
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 // register slots with hpc core as well as create linked list of ibm slot
905 for (index = 0; index < hpc_ptr->slot_count; index++) {
906
907 hp_slot_ptr = kzalloc(sizeof(*hp_slot_ptr), GFP_KERNEL);
908 if (!hp_slot_ptr) {
909 rc = -ENOMEM;
910 goto error_no_hp_slot;
911 }
912
913 hp_slot_ptr->info = kzalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
914 if (!hp_slot_ptr->info) {
915 rc = -ENOMEM;
916 goto error_no_hp_info;
917 }
918
919 tmp_slot = kzalloc(sizeof(*tmp_slot), GFP_KERNEL);
920 if (!tmp_slot) {
921 rc = -ENOMEM;
922 goto error_no_slot;
923 }
924
925 tmp_slot->flag = 1;
926
927 tmp_slot->capabilities = hpc_ptr->slots[index].slot_cap;
928 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX)
929 tmp_slot->supported_speed = 3;
930 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_100_MAX) == EBDA_SLOT_100_MAX)
931 tmp_slot->supported_speed = 2;
932 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_66_MAX) == EBDA_SLOT_66_MAX)
933 tmp_slot->supported_speed = 1;
934
935 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_PCIX_CAP) == EBDA_SLOT_PCIX_CAP)
936 tmp_slot->supported_bus_mode = 1;
937 else
938 tmp_slot->supported_bus_mode = 0;
939
940
941 tmp_slot->bus = hpc_ptr->slots[index].slot_bus_num;
942
943 bus_info_ptr1 = ibmphp_find_same_bus_num(hpc_ptr->slots[index].slot_bus_num);
944 if (!bus_info_ptr1) {
945 kfree(tmp_slot);
946 rc = -ENODEV;
947 goto error;
948 }
949 tmp_slot->bus_on = bus_info_ptr1;
950 bus_info_ptr1 = NULL;
951 tmp_slot->ctrl = hpc_ptr;
952
953 tmp_slot->ctlr_index = hpc_ptr->slots[index].ctl_index;
954 tmp_slot->number = hpc_ptr->slots[index].slot_num;
955 tmp_slot->hotplug_slot = hp_slot_ptr;
956
957 hp_slot_ptr->private = tmp_slot;
958 hp_slot_ptr->release = release_slot;
959
960 rc = fillslotinfo(hp_slot_ptr);
961 if (rc)
962 goto error;
963
964 rc = ibmphp_init_devno((struct slot **) &hp_slot_ptr->private);
965 if (rc)
966 goto error;
967 hp_slot_ptr->ops = &ibmphp_hotplug_slot_ops;
968
969 // end of registering ibm slot with hotplug core
970
971 list_add(&((struct slot *)(hp_slot_ptr->private))->ibm_slot_list, &ibmphp_slot_head);
972 }
973
974 print_bus_info();
975 list_add(&hpc_ptr->ebda_hpc_list, &ebda_hpc_head);
976
977 } /* each hpc */
978
979 list_for_each_entry(tmp_slot, &ibmphp_slot_head, ibm_slot_list) {
980 snprintf(name, SLOT_NAME_SIZE, "%s", create_file_name(tmp_slot));
981 pci_hp_register(tmp_slot->hotplug_slot,
982 pci_find_bus(0, tmp_slot->bus), tmp_slot->device, name);
983 }
984
985 print_ebda_hpc();
986 print_ibm_slot();
987 return 0;
988
989error:
990 kfree(hp_slot_ptr->private);
991error_no_slot:
992 kfree(hp_slot_ptr->info);
993error_no_hp_info:
994 kfree(hp_slot_ptr);
995error_no_hp_slot:
996 free_ebda_hpc(hpc_ptr);
997error_no_hpc:
998 iounmap(io_mem);
999 return rc;
1000}
1001
1002/*
1003 * map info (bus, devfun, start addr, end addr..) of i/o, memory,
1004 * pfm from the physical addr to a list of resource.
1005 */
1006static int __init ebda_rsrc_rsrc(void)
1007{
1008 u16 addr;
1009 short rsrc;
1010 u8 type, rsrc_type;
1011 struct ebda_pci_rsrc *rsrc_ptr;
1012
1013 addr = rsrc_list_ptr->phys_addr;
1014 debug("now entering rsrc land\n");
1015 debug("offset of rsrc: %x\n", rsrc_list_ptr->phys_addr);
1016
1017 for (rsrc = 0; rsrc < rsrc_list_ptr->num_entries; rsrc++) {
1018 type = readb(io_mem + addr);
1019
1020 addr += 1;
1021 rsrc_type = type & EBDA_RSRC_TYPE_MASK;
1022
1023 if (rsrc_type == EBDA_IO_RSRC_TYPE) {
1024 rsrc_ptr = alloc_ebda_pci_rsrc();
1025 if (!rsrc_ptr) {
1026 iounmap(io_mem);
1027 return -ENOMEM;
1028 }
1029 rsrc_ptr->rsrc_type = type;
1030
1031 rsrc_ptr->bus_num = readb(io_mem + addr);
1032 rsrc_ptr->dev_fun = readb(io_mem + addr + 1);
1033 rsrc_ptr->start_addr = readw(io_mem + addr + 2);
1034 rsrc_ptr->end_addr = readw(io_mem + addr + 4);
1035 addr += 6;
1036
1037 debug("rsrc from io type ----\n");
1038 debug("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1039 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1040
1041 list_add(&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1042 }
1043
1044 if (rsrc_type == EBDA_MEM_RSRC_TYPE || rsrc_type == EBDA_PFM_RSRC_TYPE) {
1045 rsrc_ptr = alloc_ebda_pci_rsrc();
1046 if (!rsrc_ptr) {
1047 iounmap(io_mem);
1048 return -ENOMEM;
1049 }
1050 rsrc_ptr->rsrc_type = type;
1051
1052 rsrc_ptr->bus_num = readb(io_mem + addr);
1053 rsrc_ptr->dev_fun = readb(io_mem + addr + 1);
1054 rsrc_ptr->start_addr = readl(io_mem + addr + 2);
1055 rsrc_ptr->end_addr = readl(io_mem + addr + 6);
1056 addr += 10;
1057
1058 debug("rsrc from mem or pfm ---\n");
1059 debug("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1060 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1061
1062 list_add(&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1063 }
1064 }
1065 kfree(rsrc_list_ptr);
1066 rsrc_list_ptr = NULL;
1067 print_ebda_pci_rsrc();
1068 return 0;
1069}
1070
1071u16 ibmphp_get_total_controllers(void)
1072{
1073 return hpc_list_ptr->num_ctlrs;
1074}
1075
1076struct slot *ibmphp_get_slot_from_physical_num(u8 physical_num)
1077{
1078 struct slot *slot;
1079
1080 list_for_each_entry(slot, &ibmphp_slot_head, ibm_slot_list) {
1081 if (slot->number == physical_num)
1082 return slot;
1083 }
1084 return NULL;
1085}
1086
1087/* To find:
1088 * - the smallest slot number
1089 * - the largest slot number
1090 * - the total number of the slots based on each bus
1091 * (if only one slot per bus slot_min = slot_max )
1092 */
1093struct bus_info *ibmphp_find_same_bus_num(u32 num)
1094{
1095 struct bus_info *ptr;
1096
1097 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
1098 if (ptr->busno == num)
1099 return ptr;
1100 }
1101 return NULL;
1102}
1103
1104/* Finding relative bus number, in order to map corresponding
1105 * bus register
1106 */
1107int ibmphp_get_bus_index(u8 num)
1108{
1109 struct bus_info *ptr;
1110
1111 list_for_each_entry(ptr, &bus_info_head, bus_info_list) {
1112 if (ptr->busno == num)
1113 return ptr->index;
1114 }
1115 return -ENODEV;
1116}
1117
1118void ibmphp_free_bus_info_queue(void)
1119{
1120 struct bus_info *bus_info, *next;
1121
1122 list_for_each_entry_safe(bus_info, next, &bus_info_head,
1123 bus_info_list) {
1124 kfree (bus_info);
1125 }
1126}
1127
1128void ibmphp_free_ebda_hpc_queue(void)
1129{
1130 struct controller *controller = NULL, *next;
1131 int pci_flag = 0;
1132
1133 list_for_each_entry_safe(controller, next, &ebda_hpc_head,
1134 ebda_hpc_list) {
1135 if (controller->ctlr_type == 0)
1136 release_region(controller->u.isa_ctlr.io_start, (controller->u.isa_ctlr.io_end - controller->u.isa_ctlr.io_start + 1));
1137 else if ((controller->ctlr_type == 1) && (!pci_flag)) {
1138 ++pci_flag;
1139 pci_unregister_driver(&ibmphp_driver);
1140 }
1141 free_ebda_hpc(controller);
1142 }
1143}
1144
1145void ibmphp_free_ebda_pci_rsrc_queue(void)
1146{
1147 struct ebda_pci_rsrc *resource, *next;
1148
1149 list_for_each_entry_safe(resource, next, &ibmphp_ebda_pci_rsrc_head,
1150 ebda_pci_rsrc_list) {
1151 kfree (resource);
1152 resource = NULL;
1153 }
1154}
1155
1156static struct pci_device_id id_table[] = {
1157 {
1158 .vendor = PCI_VENDOR_ID_IBM,
1159 .device = HPC_DEVICE_ID,
1160 .subvendor = PCI_VENDOR_ID_IBM,
1161 .subdevice = HPC_SUBSYSTEM_ID,
1162 .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00),
1163 }, {}
1164};
1165
1166MODULE_DEVICE_TABLE(pci, id_table);
1167
1168static int ibmphp_probe(struct pci_dev *, const struct pci_device_id *);
1169static struct pci_driver ibmphp_driver = {
1170 .name = "ibmphp",
1171 .id_table = id_table,
1172 .probe = ibmphp_probe,
1173};
1174
1175int ibmphp_register_pci(void)
1176{
1177 struct controller *ctrl;
1178 int rc = 0;
1179
1180 list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) {
1181 if (ctrl->ctlr_type == 1) {
1182 rc = pci_register_driver(&ibmphp_driver);
1183 break;
1184 }
1185 }
1186 return rc;
1187}
1188static int ibmphp_probe(struct pci_dev *dev, const struct pci_device_id *ids)
1189{
1190 struct controller *ctrl;
1191
1192 debug("inside ibmphp_probe\n");
1193
1194 list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) {
1195 if (ctrl->ctlr_type == 1) {
1196 if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) {
1197 ctrl->ctrl_dev = dev;
1198 debug("found device!!!\n");
1199 debug("dev->device = %x, dev->subsystem_device = %x\n", dev->device, dev->subsystem_device);
1200 return 0;
1201 }
1202 }
1203 }
1204 return -ENODEV;
1205}