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 */
52 LIST_HEAD (ibmphp_ebda_pci_rsrc_head);
53 LIST_HEAD (ibmphp_slot_head);
54
55 /* Local variables */
56 static struct ebda_hpc_list *hpc_list_ptr;
57 static struct ebda_rsrc_list *rsrc_list_ptr;
58 static struct rio_table_hdr *rio_table_ptr = NULL;
59 static LIST_HEAD (ebda_hpc_head);
60 static LIST_HEAD (bus_info_head);
61 static LIST_HEAD (rio_vg_head);
62 static LIST_HEAD (rio_lo_head);
63 static LIST_HEAD (opt_vg_head);
64 static LIST_HEAD (opt_lo_head);
65 static void __iomem *io_mem;
66
67 /* Local functions */
68 static int ebda_rsrc_controller (void);
69 static int ebda_rsrc_rsrc (void);
70 static int ebda_rio_table (void);
71
alloc_ebda_hpc_list(void)72 static struct ebda_hpc_list * __init alloc_ebda_hpc_list (void)
73 {
74 return kzalloc(sizeof(struct ebda_hpc_list), GFP_KERNEL);
75 }
76
alloc_ebda_hpc(u32 slot_count,u32 bus_count)77 static 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;
98 error_slots:
99 kfree(controller->slots);
100 error_contr:
101 kfree(controller);
102 error:
103 return NULL;
104 }
105
free_ebda_hpc(struct controller * controller)106 static void free_ebda_hpc (struct controller *controller)
107 {
108 kfree (controller->slots);
109 kfree (controller->buses);
110 kfree (controller);
111 }
112
alloc_ebda_rsrc_list(void)113 static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list (void)
114 {
115 return kzalloc(sizeof(struct ebda_rsrc_list), GFP_KERNEL);
116 }
117
alloc_ebda_pci_rsrc(void)118 static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc (void)
119 {
120 return kzalloc(sizeof(struct ebda_pci_rsrc), GFP_KERNEL);
121 }
122
print_bus_info(void)123 static 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
print_lo_info(void)144 static 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
print_vg_info(void)159 static 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
print_ebda_pci_rsrc(void)174 static 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
print_ibm_slot(void)184 static 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
print_opt_vg(void)193 static 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
print_ebda_hpc(void)205 static 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
ibmphp_access_ebda(void)245 int __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;
404 error_nodev:
405 rc = -ENODEV;
406 out:
407 iounmap (io_mem);
408 return rc;
409 }
410
411 /*
412 * map info of scalability details and rio details from physical address
413 */
ebda_rio_table(void)414 static 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 */
search_opt_vg(u8 chassis_num)460 static 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
combine_wpg_for_chassis(void)470 static 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 */
search_opt_lo(u8 chassis_num)498 static 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
combine_wpg_for_expansion(void)508 static 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 */
first_slot_num(u8 slot_num,u8 first_slot,u8 var)541 static 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
find_rxe_num(u8 slot_num)565 static 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
find_chassis_num(u8 slot_num)577 static 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 */
calculate_first_slot(u8 slot_num)592 static 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
create_file_name(struct slot * slot_cur)609 static 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
fillslotinfo(struct hotplug_slot * hotplug_slot)678 static 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
release_slot(struct hotplug_slot * hotplug_slot)716 static 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
735 static 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 */
ebda_rsrc_controller(void)742 static 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
989 error:
990 kfree (hp_slot_ptr->private);
991 error_no_slot:
992 kfree (hp_slot_ptr->info);
993 error_no_hp_info:
994 kfree (hp_slot_ptr);
995 error_no_hp_slot:
996 free_ebda_hpc (hpc_ptr);
997 error_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 */
ebda_rsrc_rsrc(void)1006 static 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
ibmphp_get_total_controllers(void)1071 u16 ibmphp_get_total_controllers (void)
1072 {
1073 return hpc_list_ptr->num_ctlrs;
1074 }
1075
ibmphp_get_slot_from_physical_num(u8 physical_num)1076 struct 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 */
ibmphp_find_same_bus_num(u32 num)1093 struct 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 */
ibmphp_get_bus_index(u8 num)1107 int 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
ibmphp_free_bus_info_queue(void)1118 void ibmphp_free_bus_info_queue (void)
1119 {
1120 struct bus_info *bus_info;
1121 struct list_head *list;
1122 struct list_head *next;
1123
1124 list_for_each_safe (list, next, &bus_info_head ) {
1125 bus_info = list_entry (list, struct bus_info, bus_info_list);
1126 kfree (bus_info);
1127 }
1128 }
1129
ibmphp_free_ebda_hpc_queue(void)1130 void ibmphp_free_ebda_hpc_queue (void)
1131 {
1132 struct controller *controller = NULL;
1133 struct list_head *list;
1134 struct list_head *next;
1135 int pci_flag = 0;
1136
1137 list_for_each_safe (list, next, &ebda_hpc_head) {
1138 controller = list_entry (list, struct controller, ebda_hpc_list);
1139 if (controller->ctlr_type == 0)
1140 release_region (controller->u.isa_ctlr.io_start, (controller->u.isa_ctlr.io_end - controller->u.isa_ctlr.io_start + 1));
1141 else if ((controller->ctlr_type == 1) && (!pci_flag)) {
1142 ++pci_flag;
1143 pci_unregister_driver (&ibmphp_driver);
1144 }
1145 free_ebda_hpc (controller);
1146 }
1147 }
1148
ibmphp_free_ebda_pci_rsrc_queue(void)1149 void ibmphp_free_ebda_pci_rsrc_queue (void)
1150 {
1151 struct ebda_pci_rsrc *resource;
1152 struct list_head *list;
1153 struct list_head *next;
1154
1155 list_for_each_safe (list, next, &ibmphp_ebda_pci_rsrc_head) {
1156 resource = list_entry (list, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
1157 kfree (resource);
1158 resource = NULL;
1159 }
1160 }
1161
1162 static struct pci_device_id id_table[] = {
1163 {
1164 .vendor = PCI_VENDOR_ID_IBM,
1165 .device = HPC_DEVICE_ID,
1166 .subvendor = PCI_VENDOR_ID_IBM,
1167 .subdevice = HPC_SUBSYSTEM_ID,
1168 .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00),
1169 }, {}
1170 };
1171
1172 MODULE_DEVICE_TABLE(pci, id_table);
1173
1174 static int ibmphp_probe (struct pci_dev *, const struct pci_device_id *);
1175 static struct pci_driver ibmphp_driver = {
1176 .name = "ibmphp",
1177 .id_table = id_table,
1178 .probe = ibmphp_probe,
1179 };
1180
ibmphp_register_pci(void)1181 int ibmphp_register_pci (void)
1182 {
1183 struct controller *ctrl;
1184 int rc = 0;
1185
1186 list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) {
1187 if (ctrl->ctlr_type == 1) {
1188 rc = pci_register_driver(&ibmphp_driver);
1189 break;
1190 }
1191 }
1192 return rc;
1193 }
ibmphp_probe(struct pci_dev * dev,const struct pci_device_id * ids)1194 static int ibmphp_probe (struct pci_dev *dev, const struct pci_device_id *ids)
1195 {
1196 struct controller *ctrl;
1197
1198 debug ("inside ibmphp_probe\n");
1199
1200 list_for_each_entry(ctrl, &ebda_hpc_head, ebda_hpc_list) {
1201 if (ctrl->ctlr_type == 1) {
1202 if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) {
1203 ctrl->ctrl_dev = dev;
1204 debug ("found device!!!\n");
1205 debug ("dev->device = %x, dev->subsystem_device = %x\n", dev->device, dev->subsystem_device);
1206 return 0;
1207 }
1208 }
1209 }
1210 return -ENODEV;
1211 }
1212