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path: root/drivers/pci/hotplug/ibmphp_ebda.c
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Diffstat (limited to 'drivers/pci/hotplug/ibmphp_ebda.c')
-rw-r--r--drivers/pci/hotplug/ibmphp_ebda.c1275
1 files changed, 1275 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/ibmphp_ebda.c b/drivers/pci/hotplug/ibmphp_ebda.c
new file mode 100644
index 000000000000..aea1187c73ad
--- /dev/null
+++ b/drivers/pci/hotplug/ibmphp_ebda.c
@@ -0,0 +1,1275 @@
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/sched.h>
32#include <linux/errno.h>
33#include <linux/mm.h>
34#include <linux/slab.h>
35#include <linux/pci.h>
36#include <linux/list.h>
37#include <linux/init.h>
38#include "ibmphp.h"
39
40/*
41 * POST builds data blocks(in this data block definition, a char-1
42 * byte, short(or word)-2 byte, long(dword)-4 byte) in the Extended
43 * BIOS Data Area which describe the configuration of the hot-plug
44 * controllers and resources used by the PCI Hot-Plug devices.
45 *
46 * This file walks EBDA, maps data block from physical addr,
47 * reconstruct linked lists about all system resource(MEM, PFM, IO)
48 * already assigned by POST, as well as linked lists about hot plug
49 * controllers (ctlr#, slot#, bus&slot features...)
50 */
51
52/* Global lists */
53LIST_HEAD (ibmphp_ebda_pci_rsrc_head);
54LIST_HEAD (ibmphp_slot_head);
55
56/* Local variables */
57static struct ebda_hpc_list *hpc_list_ptr;
58static struct ebda_rsrc_list *rsrc_list_ptr;
59static struct rio_table_hdr *rio_table_ptr = NULL;
60static LIST_HEAD (ebda_hpc_head);
61static LIST_HEAD (bus_info_head);
62static LIST_HEAD (rio_vg_head);
63static LIST_HEAD (rio_lo_head);
64static LIST_HEAD (opt_vg_head);
65static LIST_HEAD (opt_lo_head);
66static void __iomem *io_mem;
67
68/* Local functions */
69static int ebda_rsrc_controller (void);
70static int ebda_rsrc_rsrc (void);
71static int ebda_rio_table (void);
72
73static struct ebda_hpc_list * __init alloc_ebda_hpc_list (void)
74{
75 struct ebda_hpc_list *list;
76
77 list = kmalloc (sizeof (struct ebda_hpc_list), GFP_KERNEL);
78 if (!list)
79 return NULL;
80 memset (list, 0, sizeof (*list));
81 return list;
82}
83
84static struct controller *alloc_ebda_hpc (u32 slot_count, u32 bus_count)
85{
86 struct controller *controller;
87 struct ebda_hpc_slot *slots;
88 struct ebda_hpc_bus *buses;
89
90 controller = kmalloc (sizeof (struct controller), GFP_KERNEL);
91 if (!controller)
92 goto error;
93 memset (controller, 0, sizeof (*controller));
94
95 slots = kmalloc (sizeof (struct ebda_hpc_slot) * slot_count, GFP_KERNEL);
96 if (!slots)
97 goto error_contr;
98 memset (slots, 0, sizeof (*slots) * slot_count);
99 controller->slots = slots;
100
101 buses = kmalloc (sizeof (struct ebda_hpc_bus) * bus_count, GFP_KERNEL);
102 if (!buses)
103 goto error_slots;
104 memset (buses, 0, sizeof (*buses) * bus_count);
105 controller->buses = buses;
106
107 return controller;
108error_slots:
109 kfree(controller->slots);
110error_contr:
111 kfree(controller);
112error:
113 return NULL;
114}
115
116static void free_ebda_hpc (struct controller *controller)
117{
118 kfree (controller->slots);
119 kfree (controller->buses);
120 kfree (controller);
121}
122
123static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list (void)
124{
125 struct ebda_rsrc_list *list;
126
127 list = kmalloc (sizeof (struct ebda_rsrc_list), GFP_KERNEL);
128 if (!list)
129 return NULL;
130 memset (list, 0, sizeof (*list));
131 return list;
132}
133
134static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc (void)
135{
136 struct ebda_pci_rsrc *resource;
137
138 resource = kmalloc (sizeof (struct ebda_pci_rsrc), GFP_KERNEL);
139 if (!resource)
140 return NULL;
141 memset (resource, 0, sizeof (*resource));
142 return resource;
143}
144
145static void __init print_bus_info (void)
146{
147 struct bus_info *ptr;
148 struct list_head *ptr1;
149
150 list_for_each (ptr1, &bus_info_head) {
151 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
152 debug ("%s - slot_min = %x\n", __FUNCTION__, ptr->slot_min);
153 debug ("%s - slot_max = %x\n", __FUNCTION__, ptr->slot_max);
154 debug ("%s - slot_count = %x\n", __FUNCTION__, ptr->slot_count);
155 debug ("%s - bus# = %x\n", __FUNCTION__, ptr->busno);
156 debug ("%s - current_speed = %x\n", __FUNCTION__, ptr->current_speed);
157 debug ("%s - controller_id = %x\n", __FUNCTION__, ptr->controller_id);
158
159 debug ("%s - slots_at_33_conv = %x\n", __FUNCTION__, ptr->slots_at_33_conv);
160 debug ("%s - slots_at_66_conv = %x\n", __FUNCTION__, ptr->slots_at_66_conv);
161 debug ("%s - slots_at_66_pcix = %x\n", __FUNCTION__, ptr->slots_at_66_pcix);
162 debug ("%s - slots_at_100_pcix = %x\n", __FUNCTION__, ptr->slots_at_100_pcix);
163 debug ("%s - slots_at_133_pcix = %x\n", __FUNCTION__, ptr->slots_at_133_pcix);
164
165 }
166}
167
168static void print_lo_info (void)
169{
170 struct rio_detail *ptr;
171 struct list_head *ptr1;
172 debug ("print_lo_info ----\n");
173 list_for_each (ptr1, &rio_lo_head) {
174 ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
175 debug ("%s - rio_node_id = %x\n", __FUNCTION__, ptr->rio_node_id);
176 debug ("%s - rio_type = %x\n", __FUNCTION__, ptr->rio_type);
177 debug ("%s - owner_id = %x\n", __FUNCTION__, ptr->owner_id);
178 debug ("%s - first_slot_num = %x\n", __FUNCTION__, ptr->first_slot_num);
179 debug ("%s - wpindex = %x\n", __FUNCTION__, ptr->wpindex);
180 debug ("%s - chassis_num = %x\n", __FUNCTION__, ptr->chassis_num);
181
182 }
183}
184
185static void print_vg_info (void)
186{
187 struct rio_detail *ptr;
188 struct list_head *ptr1;
189 debug ("%s ---\n", __FUNCTION__);
190 list_for_each (ptr1, &rio_vg_head) {
191 ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
192 debug ("%s - rio_node_id = %x\n", __FUNCTION__, ptr->rio_node_id);
193 debug ("%s - rio_type = %x\n", __FUNCTION__, ptr->rio_type);
194 debug ("%s - owner_id = %x\n", __FUNCTION__, ptr->owner_id);
195 debug ("%s - first_slot_num = %x\n", __FUNCTION__, ptr->first_slot_num);
196 debug ("%s - wpindex = %x\n", __FUNCTION__, ptr->wpindex);
197 debug ("%s - chassis_num = %x\n", __FUNCTION__, ptr->chassis_num);
198
199 }
200}
201
202static void __init print_ebda_pci_rsrc (void)
203{
204 struct ebda_pci_rsrc *ptr;
205 struct list_head *ptr1;
206
207 list_for_each (ptr1, &ibmphp_ebda_pci_rsrc_head) {
208 ptr = list_entry (ptr1, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
209 debug ("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
210 __FUNCTION__, ptr->rsrc_type ,ptr->bus_num, ptr->dev_fun,ptr->start_addr, ptr->end_addr);
211 }
212}
213
214static void __init print_ibm_slot (void)
215{
216 struct slot *ptr;
217 struct list_head *ptr1;
218
219 list_for_each (ptr1, &ibmphp_slot_head) {
220 ptr = list_entry (ptr1, struct slot, ibm_slot_list);
221 debug ("%s - slot_number: %x\n", __FUNCTION__, ptr->number);
222 }
223}
224
225static void __init print_opt_vg (void)
226{
227 struct opt_rio *ptr;
228 struct list_head *ptr1;
229 debug ("%s ---\n", __FUNCTION__);
230 list_for_each (ptr1, &opt_vg_head) {
231 ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
232 debug ("%s - rio_type %x\n", __FUNCTION__, ptr->rio_type);
233 debug ("%s - chassis_num: %x\n", __FUNCTION__, ptr->chassis_num);
234 debug ("%s - first_slot_num: %x\n", __FUNCTION__, ptr->first_slot_num);
235 debug ("%s - middle_num: %x\n", __FUNCTION__, ptr->middle_num);
236 }
237}
238
239static void __init print_ebda_hpc (void)
240{
241 struct controller *hpc_ptr;
242 struct list_head *ptr1;
243 u16 index;
244
245 list_for_each (ptr1, &ebda_hpc_head) {
246
247 hpc_ptr = list_entry (ptr1, struct controller, ebda_hpc_list);
248
249 for (index = 0; index < hpc_ptr->slot_count; index++) {
250 debug ("%s - physical slot#: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_num);
251 debug ("%s - pci bus# of the slot: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_bus_num);
252 debug ("%s - index into ctlr addr: %x\n", __FUNCTION__, hpc_ptr->slots[index].ctl_index);
253 debug ("%s - cap of the slot: %x\n", __FUNCTION__, hpc_ptr->slots[index].slot_cap);
254 }
255
256 for (index = 0; index < hpc_ptr->bus_count; index++) {
257 debug ("%s - bus# of each bus controlled by this ctlr: %x\n", __FUNCTION__, hpc_ptr->buses[index].bus_num);
258 }
259
260 debug ("%s - type of hpc: %x\n", __FUNCTION__, hpc_ptr->ctlr_type);
261 switch (hpc_ptr->ctlr_type) {
262 case 1:
263 debug ("%s - bus: %x\n", __FUNCTION__, hpc_ptr->u.pci_ctlr.bus);
264 debug ("%s - dev_fun: %x\n", __FUNCTION__, hpc_ptr->u.pci_ctlr.dev_fun);
265 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
266 break;
267
268 case 0:
269 debug ("%s - io_start: %x\n", __FUNCTION__, hpc_ptr->u.isa_ctlr.io_start);
270 debug ("%s - io_end: %x\n", __FUNCTION__, hpc_ptr->u.isa_ctlr.io_end);
271 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
272 break;
273
274 case 2:
275 case 4:
276 debug ("%s - wpegbbar: %lx\n", __FUNCTION__, hpc_ptr->u.wpeg_ctlr.wpegbbar);
277 debug ("%s - i2c_addr: %x\n", __FUNCTION__, hpc_ptr->u.wpeg_ctlr.i2c_addr);
278 debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
279 break;
280 }
281 }
282}
283
284int __init ibmphp_access_ebda (void)
285{
286 u8 format, num_ctlrs, rio_complete, hs_complete;
287 u16 ebda_seg, num_entries, next_offset, offset, blk_id, sub_addr, re, rc_id, re_id, base;
288 int rc = 0;
289
290
291 rio_complete = 0;
292 hs_complete = 0;
293
294 io_mem = ioremap ((0x40 << 4) + 0x0e, 2);
295 if (!io_mem )
296 return -ENOMEM;
297 ebda_seg = readw (io_mem);
298 iounmap (io_mem);
299 debug ("returned ebda segment: %x\n", ebda_seg);
300
301 io_mem = ioremap (ebda_seg<<4, 65000);
302 if (!io_mem )
303 return -ENOMEM;
304 next_offset = 0x180;
305
306 for (;;) {
307 offset = next_offset;
308 next_offset = readw (io_mem + offset); /* offset of next blk */
309
310 offset += 2;
311 if (next_offset == 0) /* 0 indicate it's last blk */
312 break;
313 blk_id = readw (io_mem + offset); /* this blk id */
314
315 offset += 2;
316 /* check if it is hot swap block or rio block */
317 if (blk_id != 0x4853 && blk_id != 0x4752)
318 continue;
319 /* found hs table */
320 if (blk_id == 0x4853) {
321 debug ("now enter hot swap block---\n");
322 debug ("hot blk id: %x\n", blk_id);
323 format = readb (io_mem + offset);
324
325 offset += 1;
326 if (format != 4)
327 goto error_nodev;
328 debug ("hot blk format: %x\n", format);
329 /* hot swap sub blk */
330 base = offset;
331
332 sub_addr = base;
333 re = readw (io_mem + sub_addr); /* next sub blk */
334
335 sub_addr += 2;
336 rc_id = readw (io_mem + sub_addr); /* sub blk id */
337
338 sub_addr += 2;
339 if (rc_id != 0x5243)
340 goto error_nodev;
341 /* rc sub blk signature */
342 num_ctlrs = readb (io_mem + sub_addr);
343
344 sub_addr += 1;
345 hpc_list_ptr = alloc_ebda_hpc_list ();
346 if (!hpc_list_ptr) {
347 rc = -ENOMEM;
348 goto out;
349 }
350 hpc_list_ptr->format = format;
351 hpc_list_ptr->num_ctlrs = num_ctlrs;
352 hpc_list_ptr->phys_addr = sub_addr; /* offset of RSRC_CONTROLLER blk */
353 debug ("info about hpc descriptor---\n");
354 debug ("hot blk format: %x\n", format);
355 debug ("num of controller: %x\n", num_ctlrs);
356 debug ("offset of hpc data structure enteries: %x\n ", sub_addr);
357
358 sub_addr = base + re; /* re sub blk */
359 /* FIXME: rc is never used/checked */
360 rc = readw (io_mem + sub_addr); /* next sub blk */
361
362 sub_addr += 2;
363 re_id = readw (io_mem + sub_addr); /* sub blk id */
364
365 sub_addr += 2;
366 if (re_id != 0x5245)
367 goto error_nodev;
368
369 /* signature of re */
370 num_entries = readw (io_mem + sub_addr);
371
372 sub_addr += 2; /* offset of RSRC_ENTRIES blk */
373 rsrc_list_ptr = alloc_ebda_rsrc_list ();
374 if (!rsrc_list_ptr ) {
375 rc = -ENOMEM;
376 goto out;
377 }
378 rsrc_list_ptr->format = format;
379 rsrc_list_ptr->num_entries = num_entries;
380 rsrc_list_ptr->phys_addr = sub_addr;
381
382 debug ("info about rsrc descriptor---\n");
383 debug ("format: %x\n", format);
384 debug ("num of rsrc: %x\n", num_entries);
385 debug ("offset of rsrc data structure enteries: %x\n ", sub_addr);
386
387 hs_complete = 1;
388 } else {
389 /* found rio table, blk_id == 0x4752 */
390 debug ("now enter io table ---\n");
391 debug ("rio blk id: %x\n", blk_id);
392
393 rio_table_ptr = kmalloc (sizeof (struct rio_table_hdr), GFP_KERNEL);
394 if (!rio_table_ptr)
395 return -ENOMEM;
396 memset (rio_table_ptr, 0, sizeof (struct rio_table_hdr) );
397 rio_table_ptr->ver_num = readb (io_mem + offset);
398 rio_table_ptr->scal_count = readb (io_mem + offset + 1);
399 rio_table_ptr->riodev_count = readb (io_mem + offset + 2);
400 rio_table_ptr->offset = offset +3 ;
401
402 debug("info about rio table hdr ---\n");
403 debug("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ",
404 rio_table_ptr->ver_num, rio_table_ptr->scal_count,
405 rio_table_ptr->riodev_count, rio_table_ptr->offset);
406
407 rio_complete = 1;
408 }
409 }
410
411 if (!hs_complete && !rio_complete)
412 goto error_nodev;
413
414 if (rio_table_ptr) {
415 if (rio_complete && rio_table_ptr->ver_num == 3) {
416 rc = ebda_rio_table ();
417 if (rc)
418 goto out;
419 }
420 }
421 rc = ebda_rsrc_controller ();
422 if (rc)
423 goto out;
424
425 rc = ebda_rsrc_rsrc ();
426 goto out;
427error_nodev:
428 rc = -ENODEV;
429out:
430 iounmap (io_mem);
431 return rc;
432}
433
434/*
435 * map info of scalability details and rio details from physical address
436 */
437static int __init ebda_rio_table (void)
438{
439 u16 offset;
440 u8 i;
441 struct rio_detail *rio_detail_ptr;
442
443 offset = rio_table_ptr->offset;
444 offset += 12 * rio_table_ptr->scal_count;
445
446 // we do concern about rio details
447 for (i = 0; i < rio_table_ptr->riodev_count; i++) {
448 rio_detail_ptr = kmalloc (sizeof (struct rio_detail), GFP_KERNEL);
449 if (!rio_detail_ptr)
450 return -ENOMEM;
451 memset (rio_detail_ptr, 0, sizeof (struct rio_detail));
452 rio_detail_ptr->rio_node_id = readb (io_mem + offset);
453 rio_detail_ptr->bbar = readl (io_mem + offset + 1);
454 rio_detail_ptr->rio_type = readb (io_mem + offset + 5);
455 rio_detail_ptr->owner_id = readb (io_mem + offset + 6);
456 rio_detail_ptr->port0_node_connect = readb (io_mem + offset + 7);
457 rio_detail_ptr->port0_port_connect = readb (io_mem + offset + 8);
458 rio_detail_ptr->port1_node_connect = readb (io_mem + offset + 9);
459 rio_detail_ptr->port1_port_connect = readb (io_mem + offset + 10);
460 rio_detail_ptr->first_slot_num = readb (io_mem + offset + 11);
461 rio_detail_ptr->status = readb (io_mem + offset + 12);
462 rio_detail_ptr->wpindex = readb (io_mem + offset + 13);
463 rio_detail_ptr->chassis_num = readb (io_mem + offset + 14);
464// 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);
465 //create linked list of chassis
466 if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5)
467 list_add (&rio_detail_ptr->rio_detail_list, &rio_vg_head);
468 //create linked list of expansion box
469 else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7)
470 list_add (&rio_detail_ptr->rio_detail_list, &rio_lo_head);
471 else
472 // not in my concern
473 kfree (rio_detail_ptr);
474 offset += 15;
475 }
476 print_lo_info ();
477 print_vg_info ();
478 return 0;
479}
480
481/*
482 * reorganizing linked list of chassis
483 */
484static struct opt_rio *search_opt_vg (u8 chassis_num)
485{
486 struct opt_rio *ptr;
487 struct list_head *ptr1;
488 list_for_each (ptr1, &opt_vg_head) {
489 ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
490 if (ptr->chassis_num == chassis_num)
491 return ptr;
492 }
493 return NULL;
494}
495
496static int __init combine_wpg_for_chassis (void)
497{
498 struct opt_rio *opt_rio_ptr = NULL;
499 struct rio_detail *rio_detail_ptr = NULL;
500 struct list_head *list_head_ptr = NULL;
501
502 list_for_each (list_head_ptr, &rio_vg_head) {
503 rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
504 opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num);
505 if (!opt_rio_ptr) {
506 opt_rio_ptr = (struct opt_rio *) kmalloc (sizeof (struct opt_rio), GFP_KERNEL);
507 if (!opt_rio_ptr)
508 return -ENOMEM;
509 memset (opt_rio_ptr, 0, sizeof (struct opt_rio));
510 opt_rio_ptr->rio_type = rio_detail_ptr->rio_type;
511 opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num;
512 opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
513 opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num;
514 list_add (&opt_rio_ptr->opt_rio_list, &opt_vg_head);
515 } else {
516 opt_rio_ptr->first_slot_num = min (opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
517 opt_rio_ptr->middle_num = max (opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num);
518 }
519 }
520 print_opt_vg ();
521 return 0;
522}
523
524/*
525 * reorgnizing linked list of expansion box
526 */
527static struct opt_rio_lo *search_opt_lo (u8 chassis_num)
528{
529 struct opt_rio_lo *ptr;
530 struct list_head *ptr1;
531 list_for_each (ptr1, &opt_lo_head) {
532 ptr = list_entry (ptr1, struct opt_rio_lo, opt_rio_lo_list);
533 if (ptr->chassis_num == chassis_num)
534 return ptr;
535 }
536 return NULL;
537}
538
539static int combine_wpg_for_expansion (void)
540{
541 struct opt_rio_lo *opt_rio_lo_ptr = NULL;
542 struct rio_detail *rio_detail_ptr = NULL;
543 struct list_head *list_head_ptr = NULL;
544
545 list_for_each (list_head_ptr, &rio_lo_head) {
546 rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
547 opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num);
548 if (!opt_rio_lo_ptr) {
549 opt_rio_lo_ptr = (struct opt_rio_lo *) kmalloc (sizeof (struct opt_rio_lo), GFP_KERNEL);
550 if (!opt_rio_lo_ptr)
551 return -ENOMEM;
552 memset (opt_rio_lo_ptr, 0, sizeof (struct opt_rio_lo));
553 opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type;
554 opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num;
555 opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
556 opt_rio_lo_ptr->middle_num = rio_detail_ptr->first_slot_num;
557 opt_rio_lo_ptr->pack_count = 1;
558
559 list_add (&opt_rio_lo_ptr->opt_rio_lo_list, &opt_lo_head);
560 } else {
561 opt_rio_lo_ptr->first_slot_num = min (opt_rio_lo_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
562 opt_rio_lo_ptr->middle_num = max (opt_rio_lo_ptr->middle_num, rio_detail_ptr->first_slot_num);
563 opt_rio_lo_ptr->pack_count = 2;
564 }
565 }
566 return 0;
567}
568
569
570/* Since we don't know the max slot number per each chassis, hence go
571 * through the list of all chassis to find out the range
572 * Arguments: slot_num, 1st slot number of the chassis we think we are on,
573 * var (0 = chassis, 1 = expansion box)
574 */
575static int first_slot_num (u8 slot_num, u8 first_slot, u8 var)
576{
577 struct opt_rio *opt_vg_ptr = NULL;
578 struct opt_rio_lo *opt_lo_ptr = NULL;
579 struct list_head *ptr = NULL;
580 int rc = 0;
581
582 if (!var) {
583 list_for_each (ptr, &opt_vg_head) {
584 opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
585 if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) {
586 rc = -ENODEV;
587 break;
588 }
589 }
590 } else {
591 list_for_each (ptr, &opt_lo_head) {
592 opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
593 if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) {
594 rc = -ENODEV;
595 break;
596 }
597 }
598 }
599 return rc;
600}
601
602static struct opt_rio_lo * find_rxe_num (u8 slot_num)
603{
604 struct opt_rio_lo *opt_lo_ptr;
605 struct list_head *ptr;
606
607 list_for_each (ptr, &opt_lo_head) {
608 opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
609 //check to see if this slot_num belongs to expansion box
610 if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_lo_ptr->first_slot_num, 1)))
611 return opt_lo_ptr;
612 }
613 return NULL;
614}
615
616static struct opt_rio * find_chassis_num (u8 slot_num)
617{
618 struct opt_rio *opt_vg_ptr;
619 struct list_head *ptr;
620
621 list_for_each (ptr, &opt_vg_head) {
622 opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
623 //check to see if this slot_num belongs to chassis
624 if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_vg_ptr->first_slot_num, 0)))
625 return opt_vg_ptr;
626 }
627 return NULL;
628}
629
630/* This routine will find out how many slots are in the chassis, so that
631 * the slot numbers for rxe100 would start from 1, and not from 7, or 6 etc
632 */
633static u8 calculate_first_slot (u8 slot_num)
634{
635 u8 first_slot = 1;
636 struct list_head * list;
637 struct slot * slot_cur;
638
639 list_for_each (list, &ibmphp_slot_head) {
640 slot_cur = list_entry (list, struct slot, ibm_slot_list);
641 if (slot_cur->ctrl) {
642 if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num))
643 first_slot = slot_cur->ctrl->ending_slot_num;
644 }
645 }
646 return first_slot + 1;
647
648}
649static char *create_file_name (struct slot * slot_cur)
650{
651 struct opt_rio *opt_vg_ptr = NULL;
652 struct opt_rio_lo *opt_lo_ptr = NULL;
653 static char str[30];
654 int which = 0; /* rxe = 1, chassis = 0 */
655 u8 number = 1; /* either chassis or rxe # */
656 u8 first_slot = 1;
657 u8 slot_num;
658 u8 flag = 0;
659
660 if (!slot_cur) {
661 err ("Structure passed is empty\n");
662 return NULL;
663 }
664
665 slot_num = slot_cur->number;
666
667 memset (str, 0, sizeof(str));
668
669 if (rio_table_ptr) {
670 if (rio_table_ptr->ver_num == 3) {
671 opt_vg_ptr = find_chassis_num (slot_num);
672 opt_lo_ptr = find_rxe_num (slot_num);
673 }
674 }
675 if (opt_vg_ptr) {
676 if (opt_lo_ptr) {
677 if ((slot_num - opt_vg_ptr->first_slot_num) > (slot_num - opt_lo_ptr->first_slot_num)) {
678 number = opt_lo_ptr->chassis_num;
679 first_slot = opt_lo_ptr->first_slot_num;
680 which = 1; /* it is RXE */
681 } else {
682 first_slot = opt_vg_ptr->first_slot_num;
683 number = opt_vg_ptr->chassis_num;
684 which = 0;
685 }
686 } else {
687 first_slot = opt_vg_ptr->first_slot_num;
688 number = opt_vg_ptr->chassis_num;
689 which = 0;
690 }
691 ++flag;
692 } else if (opt_lo_ptr) {
693 number = opt_lo_ptr->chassis_num;
694 first_slot = opt_lo_ptr->first_slot_num;
695 which = 1;
696 ++flag;
697 } else if (rio_table_ptr) {
698 if (rio_table_ptr->ver_num == 3) {
699 /* if both NULL and we DO have correct RIO table in BIOS */
700 return NULL;
701 }
702 }
703 if (!flag) {
704 if (slot_cur->ctrl->ctlr_type == 4) {
705 first_slot = calculate_first_slot (slot_num);
706 which = 1;
707 } else {
708 which = 0;
709 }
710 }
711
712 sprintf(str, "%s%dslot%d",
713 which == 0 ? "chassis" : "rxe",
714 number, slot_num - first_slot + 1);
715 return str;
716}
717
718static int fillslotinfo(struct hotplug_slot *hotplug_slot)
719{
720 struct slot *slot;
721 int rc = 0;
722
723 if (!hotplug_slot || !hotplug_slot->private)
724 return -EINVAL;
725
726 slot = hotplug_slot->private;
727 rc = ibmphp_hpc_readslot(slot, READ_ALLSTAT, NULL);
728 if (rc)
729 return rc;
730
731 // power - enabled:1 not:0
732 hotplug_slot->info->power_status = SLOT_POWER(slot->status);
733
734 // attention - off:0, on:1, blinking:2
735 hotplug_slot->info->attention_status = SLOT_ATTN(slot->status, slot->ext_status);
736
737 // latch - open:1 closed:0
738 hotplug_slot->info->latch_status = SLOT_LATCH(slot->status);
739
740 // pci board - present:1 not:0
741 if (SLOT_PRESENT (slot->status))
742 hotplug_slot->info->adapter_status = 1;
743 else
744 hotplug_slot->info->adapter_status = 0;
745/*
746 if (slot->bus_on->supported_bus_mode
747 && (slot->bus_on->supported_speed == BUS_SPEED_66))
748 hotplug_slot->info->max_bus_speed_status = BUS_SPEED_66PCIX;
749 else
750 hotplug_slot->info->max_bus_speed_status = slot->bus_on->supported_speed;
751*/
752
753 return rc;
754}
755
756static void release_slot(struct hotplug_slot *hotplug_slot)
757{
758 struct slot *slot;
759
760 if (!hotplug_slot || !hotplug_slot->private)
761 return;
762
763 slot = hotplug_slot->private;
764 kfree(slot->hotplug_slot->info);
765 kfree(slot->hotplug_slot->name);
766 kfree(slot->hotplug_slot);
767 slot->ctrl = NULL;
768 slot->bus_on = NULL;
769
770 /* we don't want to actually remove the resources, since free_resources will do just that */
771 ibmphp_unconfigure_card(&slot, -1);
772
773 kfree (slot);
774}
775
776static struct pci_driver ibmphp_driver;
777
778/*
779 * map info (ctlr-id, slot count, slot#.. bus count, bus#, ctlr type...) of
780 * each hpc from physical address to a list of hot plug controllers based on
781 * hpc descriptors.
782 */
783static int __init ebda_rsrc_controller (void)
784{
785 u16 addr, addr_slot, addr_bus;
786 u8 ctlr_id, temp, bus_index;
787 u16 ctlr, slot, bus;
788 u16 slot_num, bus_num, index;
789 struct hotplug_slot *hp_slot_ptr;
790 struct controller *hpc_ptr;
791 struct ebda_hpc_bus *bus_ptr;
792 struct ebda_hpc_slot *slot_ptr;
793 struct bus_info *bus_info_ptr1, *bus_info_ptr2;
794 int rc;
795 struct slot *tmp_slot;
796 struct list_head *list;
797
798 addr = hpc_list_ptr->phys_addr;
799 for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) {
800 bus_index = 1;
801 ctlr_id = readb (io_mem + addr);
802 addr += 1;
803 slot_num = readb (io_mem + addr);
804
805 addr += 1;
806 addr_slot = addr; /* offset of slot structure */
807 addr += (slot_num * 4);
808
809 bus_num = readb (io_mem + addr);
810
811 addr += 1;
812 addr_bus = addr; /* offset of bus */
813 addr += (bus_num * 9); /* offset of ctlr_type */
814 temp = readb (io_mem + addr);
815
816 addr += 1;
817 /* init hpc structure */
818 hpc_ptr = alloc_ebda_hpc (slot_num, bus_num);
819 if (!hpc_ptr ) {
820 rc = -ENOMEM;
821 goto error_no_hpc;
822 }
823 hpc_ptr->ctlr_id = ctlr_id;
824 hpc_ptr->ctlr_relative_id = ctlr;
825 hpc_ptr->slot_count = slot_num;
826 hpc_ptr->bus_count = bus_num;
827 debug ("now enter ctlr data struture ---\n");
828 debug ("ctlr id: %x\n", ctlr_id);
829 debug ("ctlr_relative_id: %x\n", hpc_ptr->ctlr_relative_id);
830 debug ("count of slots controlled by this ctlr: %x\n", slot_num);
831 debug ("count of buses controlled by this ctlr: %x\n", bus_num);
832
833 /* init slot structure, fetch slot, bus, cap... */
834 slot_ptr = hpc_ptr->slots;
835 for (slot = 0; slot < slot_num; slot++) {
836 slot_ptr->slot_num = readb (io_mem + addr_slot);
837 slot_ptr->slot_bus_num = readb (io_mem + addr_slot + slot_num);
838 slot_ptr->ctl_index = readb (io_mem + addr_slot + 2*slot_num);
839 slot_ptr->slot_cap = readb (io_mem + addr_slot + 3*slot_num);
840
841 // create bus_info lined list --- if only one slot per bus: slot_min = slot_max
842
843 bus_info_ptr2 = ibmphp_find_same_bus_num (slot_ptr->slot_bus_num);
844 if (!bus_info_ptr2) {
845 bus_info_ptr1 = (struct bus_info *) kmalloc (sizeof (struct bus_info), GFP_KERNEL);
846 if (!bus_info_ptr1) {
847 rc = -ENOMEM;
848 goto error_no_hp_slot;
849 }
850 memset (bus_info_ptr1, 0, sizeof (struct bus_info));
851 bus_info_ptr1->slot_min = slot_ptr->slot_num;
852 bus_info_ptr1->slot_max = slot_ptr->slot_num;
853 bus_info_ptr1->slot_count += 1;
854 bus_info_ptr1->busno = slot_ptr->slot_bus_num;
855 bus_info_ptr1->index = bus_index++;
856 bus_info_ptr1->current_speed = 0xff;
857 bus_info_ptr1->current_bus_mode = 0xff;
858
859 bus_info_ptr1->controller_id = hpc_ptr->ctlr_id;
860
861 list_add_tail (&bus_info_ptr1->bus_info_list, &bus_info_head);
862
863 } else {
864 bus_info_ptr2->slot_min = min (bus_info_ptr2->slot_min, slot_ptr->slot_num);
865 bus_info_ptr2->slot_max = max (bus_info_ptr2->slot_max, slot_ptr->slot_num);
866 bus_info_ptr2->slot_count += 1;
867
868 }
869
870 // end of creating the bus_info linked list
871
872 slot_ptr++;
873 addr_slot += 1;
874 }
875
876 /* init bus structure */
877 bus_ptr = hpc_ptr->buses;
878 for (bus = 0; bus < bus_num; bus++) {
879 bus_ptr->bus_num = readb (io_mem + addr_bus + bus);
880 bus_ptr->slots_at_33_conv = readb (io_mem + addr_bus + bus_num + 8 * bus);
881 bus_ptr->slots_at_66_conv = readb (io_mem + addr_bus + bus_num + 8 * bus + 1);
882
883 bus_ptr->slots_at_66_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 2);
884
885 bus_ptr->slots_at_100_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 3);
886
887 bus_ptr->slots_at_133_pcix = readb (io_mem + addr_bus + bus_num + 8 * bus + 4);
888
889 bus_info_ptr2 = ibmphp_find_same_bus_num (bus_ptr->bus_num);
890 if (bus_info_ptr2) {
891 bus_info_ptr2->slots_at_33_conv = bus_ptr->slots_at_33_conv;
892 bus_info_ptr2->slots_at_66_conv = bus_ptr->slots_at_66_conv;
893 bus_info_ptr2->slots_at_66_pcix = bus_ptr->slots_at_66_pcix;
894 bus_info_ptr2->slots_at_100_pcix = bus_ptr->slots_at_100_pcix;
895 bus_info_ptr2->slots_at_133_pcix = bus_ptr->slots_at_133_pcix;
896 }
897 bus_ptr++;
898 }
899
900 hpc_ptr->ctlr_type = temp;
901
902 switch (hpc_ptr->ctlr_type) {
903 case 1:
904 hpc_ptr->u.pci_ctlr.bus = readb (io_mem + addr);
905 hpc_ptr->u.pci_ctlr.dev_fun = readb (io_mem + addr + 1);
906 hpc_ptr->irq = readb (io_mem + addr + 2);
907 addr += 3;
908 debug ("ctrl bus = %x, ctlr devfun = %x, irq = %x\n",
909 hpc_ptr->u.pci_ctlr.bus,
910 hpc_ptr->u.pci_ctlr.dev_fun, hpc_ptr->irq);
911 break;
912
913 case 0:
914 hpc_ptr->u.isa_ctlr.io_start = readw (io_mem + addr);
915 hpc_ptr->u.isa_ctlr.io_end = readw (io_mem + addr + 2);
916 if (!request_region (hpc_ptr->u.isa_ctlr.io_start,
917 (hpc_ptr->u.isa_ctlr.io_end - hpc_ptr->u.isa_ctlr.io_start + 1),
918 "ibmphp")) {
919 rc = -ENODEV;
920 goto error_no_hp_slot;
921 }
922 hpc_ptr->irq = readb (io_mem + addr + 4);
923 addr += 5;
924 break;
925
926 case 2:
927 case 4:
928 hpc_ptr->u.wpeg_ctlr.wpegbbar = readl (io_mem + addr);
929 hpc_ptr->u.wpeg_ctlr.i2c_addr = readb (io_mem + addr + 4);
930 hpc_ptr->irq = readb (io_mem + addr + 5);
931 addr += 6;
932 break;
933 default:
934 rc = -ENODEV;
935 goto error_no_hp_slot;
936 }
937
938 //reorganize chassis' linked list
939 combine_wpg_for_chassis ();
940 combine_wpg_for_expansion ();
941 hpc_ptr->revision = 0xff;
942 hpc_ptr->options = 0xff;
943 hpc_ptr->starting_slot_num = hpc_ptr->slots[0].slot_num;
944 hpc_ptr->ending_slot_num = hpc_ptr->slots[slot_num-1].slot_num;
945
946 // register slots with hpc core as well as create linked list of ibm slot
947 for (index = 0; index < hpc_ptr->slot_count; index++) {
948
949 hp_slot_ptr = kmalloc(sizeof(*hp_slot_ptr), GFP_KERNEL);
950 if (!hp_slot_ptr) {
951 rc = -ENOMEM;
952 goto error_no_hp_slot;
953 }
954 memset(hp_slot_ptr, 0, sizeof(*hp_slot_ptr));
955
956 hp_slot_ptr->info = kmalloc (sizeof(struct hotplug_slot_info), GFP_KERNEL);
957 if (!hp_slot_ptr->info) {
958 rc = -ENOMEM;
959 goto error_no_hp_info;
960 }
961 memset(hp_slot_ptr->info, 0, sizeof(struct hotplug_slot_info));
962
963 hp_slot_ptr->name = kmalloc(30, GFP_KERNEL);
964 if (!hp_slot_ptr->name) {
965 rc = -ENOMEM;
966 goto error_no_hp_name;
967 }
968
969 tmp_slot = kmalloc(sizeof(*tmp_slot), GFP_KERNEL);
970 if (!tmp_slot) {
971 rc = -ENOMEM;
972 goto error_no_slot;
973 }
974 memset(tmp_slot, 0, sizeof(*tmp_slot));
975
976 tmp_slot->flag = TRUE;
977
978 tmp_slot->capabilities = hpc_ptr->slots[index].slot_cap;
979 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX)
980 tmp_slot->supported_speed = 3;
981 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_100_MAX) == EBDA_SLOT_100_MAX)
982 tmp_slot->supported_speed = 2;
983 else if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_66_MAX) == EBDA_SLOT_66_MAX)
984 tmp_slot->supported_speed = 1;
985
986 if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_PCIX_CAP) == EBDA_SLOT_PCIX_CAP)
987 tmp_slot->supported_bus_mode = 1;
988 else
989 tmp_slot->supported_bus_mode = 0;
990
991
992 tmp_slot->bus = hpc_ptr->slots[index].slot_bus_num;
993
994 bus_info_ptr1 = ibmphp_find_same_bus_num (hpc_ptr->slots[index].slot_bus_num);
995 if (!bus_info_ptr1) {
996 rc = -ENODEV;
997 goto error;
998 }
999 tmp_slot->bus_on = bus_info_ptr1;
1000 bus_info_ptr1 = NULL;
1001 tmp_slot->ctrl = hpc_ptr;
1002
1003 tmp_slot->ctlr_index = hpc_ptr->slots[index].ctl_index;
1004 tmp_slot->number = hpc_ptr->slots[index].slot_num;
1005 tmp_slot->hotplug_slot = hp_slot_ptr;
1006
1007 hp_slot_ptr->private = tmp_slot;
1008 hp_slot_ptr->release = release_slot;
1009
1010 rc = fillslotinfo(hp_slot_ptr);
1011 if (rc)
1012 goto error;
1013
1014 rc = ibmphp_init_devno ((struct slot **) &hp_slot_ptr->private);
1015 if (rc)
1016 goto error;
1017 hp_slot_ptr->ops = &ibmphp_hotplug_slot_ops;
1018
1019 // end of registering ibm slot with hotplug core
1020
1021 list_add (& ((struct slot *)(hp_slot_ptr->private))->ibm_slot_list, &ibmphp_slot_head);
1022 }
1023
1024 print_bus_info ();
1025 list_add (&hpc_ptr->ebda_hpc_list, &ebda_hpc_head );
1026
1027 } /* each hpc */
1028
1029 list_for_each (list, &ibmphp_slot_head) {
1030 tmp_slot = list_entry (list, struct slot, ibm_slot_list);
1031
1032 snprintf (tmp_slot->hotplug_slot->name, 30, "%s", create_file_name (tmp_slot));
1033 pci_hp_register (tmp_slot->hotplug_slot);
1034 }
1035
1036 print_ebda_hpc ();
1037 print_ibm_slot ();
1038 return 0;
1039
1040error:
1041 kfree (hp_slot_ptr->private);
1042error_no_slot:
1043 kfree (hp_slot_ptr->name);
1044error_no_hp_name:
1045 kfree (hp_slot_ptr->info);
1046error_no_hp_info:
1047 kfree (hp_slot_ptr);
1048error_no_hp_slot:
1049 free_ebda_hpc (hpc_ptr);
1050error_no_hpc:
1051 iounmap (io_mem);
1052 return rc;
1053}
1054
1055/*
1056 * map info (bus, devfun, start addr, end addr..) of i/o, memory,
1057 * pfm from the physical addr to a list of resource.
1058 */
1059static int __init ebda_rsrc_rsrc (void)
1060{
1061 u16 addr;
1062 short rsrc;
1063 u8 type, rsrc_type;
1064 struct ebda_pci_rsrc *rsrc_ptr;
1065
1066 addr = rsrc_list_ptr->phys_addr;
1067 debug ("now entering rsrc land\n");
1068 debug ("offset of rsrc: %x\n", rsrc_list_ptr->phys_addr);
1069
1070 for (rsrc = 0; rsrc < rsrc_list_ptr->num_entries; rsrc++) {
1071 type = readb (io_mem + addr);
1072
1073 addr += 1;
1074 rsrc_type = type & EBDA_RSRC_TYPE_MASK;
1075
1076 if (rsrc_type == EBDA_IO_RSRC_TYPE) {
1077 rsrc_ptr = alloc_ebda_pci_rsrc ();
1078 if (!rsrc_ptr) {
1079 iounmap (io_mem);
1080 return -ENOMEM;
1081 }
1082 rsrc_ptr->rsrc_type = type;
1083
1084 rsrc_ptr->bus_num = readb (io_mem + addr);
1085 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1086 rsrc_ptr->start_addr = readw (io_mem + addr + 2);
1087 rsrc_ptr->end_addr = readw (io_mem + addr + 4);
1088 addr += 6;
1089
1090 debug ("rsrc from io type ----\n");
1091 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1092 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1093
1094 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1095 }
1096
1097 if (rsrc_type == EBDA_MEM_RSRC_TYPE || rsrc_type == EBDA_PFM_RSRC_TYPE) {
1098 rsrc_ptr = alloc_ebda_pci_rsrc ();
1099 if (!rsrc_ptr ) {
1100 iounmap (io_mem);
1101 return -ENOMEM;
1102 }
1103 rsrc_ptr->rsrc_type = type;
1104
1105 rsrc_ptr->bus_num = readb (io_mem + addr);
1106 rsrc_ptr->dev_fun = readb (io_mem + addr + 1);
1107 rsrc_ptr->start_addr = readl (io_mem + addr + 2);
1108 rsrc_ptr->end_addr = readl (io_mem + addr + 6);
1109 addr += 10;
1110
1111 debug ("rsrc from mem or pfm ---\n");
1112 debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
1113 rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
1114
1115 list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
1116 }
1117 }
1118 kfree (rsrc_list_ptr);
1119 rsrc_list_ptr = NULL;
1120 print_ebda_pci_rsrc ();
1121 return 0;
1122}
1123
1124u16 ibmphp_get_total_controllers (void)
1125{
1126 return hpc_list_ptr->num_ctlrs;
1127}
1128
1129struct slot *ibmphp_get_slot_from_physical_num (u8 physical_num)
1130{
1131 struct slot *slot;
1132 struct list_head *list;
1133
1134 list_for_each (list, &ibmphp_slot_head) {
1135 slot = list_entry (list, struct slot, ibm_slot_list);
1136 if (slot->number == physical_num)
1137 return slot;
1138 }
1139 return NULL;
1140}
1141
1142/* To find:
1143 * - the smallest slot number
1144 * - the largest slot number
1145 * - the total number of the slots based on each bus
1146 * (if only one slot per bus slot_min = slot_max )
1147 */
1148struct bus_info *ibmphp_find_same_bus_num (u32 num)
1149{
1150 struct bus_info *ptr;
1151 struct list_head *ptr1;
1152
1153 list_for_each (ptr1, &bus_info_head) {
1154 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
1155 if (ptr->busno == num)
1156 return ptr;
1157 }
1158 return NULL;
1159}
1160
1161/* Finding relative bus number, in order to map corresponding
1162 * bus register
1163 */
1164int ibmphp_get_bus_index (u8 num)
1165{
1166 struct bus_info *ptr;
1167 struct list_head *ptr1;
1168
1169 list_for_each (ptr1, &bus_info_head) {
1170 ptr = list_entry (ptr1, struct bus_info, bus_info_list);
1171 if (ptr->busno == num)
1172 return ptr->index;
1173 }
1174 return -ENODEV;
1175}
1176
1177void ibmphp_free_bus_info_queue (void)
1178{
1179 struct bus_info *bus_info;
1180 struct list_head *list;
1181 struct list_head *next;
1182
1183 list_for_each_safe (list, next, &bus_info_head ) {
1184 bus_info = list_entry (list, struct bus_info, bus_info_list);
1185 kfree (bus_info);
1186 }
1187}
1188
1189void ibmphp_free_ebda_hpc_queue (void)
1190{
1191 struct controller *controller = NULL;
1192 struct list_head *list;
1193 struct list_head *next;
1194 int pci_flag = 0;
1195
1196 list_for_each_safe (list, next, &ebda_hpc_head) {
1197 controller = list_entry (list, struct controller, ebda_hpc_list);
1198 if (controller->ctlr_type == 0)
1199 release_region (controller->u.isa_ctlr.io_start, (controller->u.isa_ctlr.io_end - controller->u.isa_ctlr.io_start + 1));
1200 else if ((controller->ctlr_type == 1) && (!pci_flag)) {
1201 ++pci_flag;
1202 pci_unregister_driver (&ibmphp_driver);
1203 }
1204 free_ebda_hpc (controller);
1205 }
1206}
1207
1208void ibmphp_free_ebda_pci_rsrc_queue (void)
1209{
1210 struct ebda_pci_rsrc *resource;
1211 struct list_head *list;
1212 struct list_head *next;
1213
1214 list_for_each_safe (list, next, &ibmphp_ebda_pci_rsrc_head) {
1215 resource = list_entry (list, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
1216 kfree (resource);
1217 resource = NULL;
1218 }
1219}
1220
1221static struct pci_device_id id_table[] = {
1222 {
1223 .vendor = PCI_VENDOR_ID_IBM,
1224 .device = HPC_DEVICE_ID,
1225 .subvendor = PCI_VENDOR_ID_IBM,
1226 .subdevice = HPC_SUBSYSTEM_ID,
1227 .class = ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00),
1228 }, {}
1229};
1230
1231MODULE_DEVICE_TABLE(pci, id_table);
1232
1233static int ibmphp_probe (struct pci_dev *, const struct pci_device_id *);
1234static struct pci_driver ibmphp_driver = {
1235 .name = "ibmphp",
1236 .id_table = id_table,
1237 .probe = ibmphp_probe,
1238};
1239
1240int ibmphp_register_pci (void)
1241{
1242 struct controller *ctrl;
1243 struct list_head *tmp;
1244 int rc = 0;
1245
1246 list_for_each (tmp, &ebda_hpc_head) {
1247 ctrl = list_entry (tmp, struct controller, ebda_hpc_list);
1248 if (ctrl->ctlr_type == 1) {
1249 rc = pci_register_driver(&ibmphp_driver);
1250 break;
1251 }
1252 }
1253 return rc;
1254}
1255static int ibmphp_probe (struct pci_dev * dev, const struct pci_device_id *ids)
1256{
1257 struct controller *ctrl;
1258 struct list_head *tmp;
1259
1260 debug ("inside ibmphp_probe\n");
1261
1262 list_for_each (tmp, &ebda_hpc_head) {
1263 ctrl = list_entry (tmp, struct controller, ebda_hpc_list);
1264 if (ctrl->ctlr_type == 1) {
1265 if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) {
1266 ctrl->ctrl_dev = dev;
1267 debug ("found device!!!\n");
1268 debug ("dev->device = %x, dev->subsystem_device = %x\n", dev->device, dev->subsystem_device);
1269 return 0;
1270 }
1271 }
1272 }
1273 return -ENODEV;
1274}
1275
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-03 18:24:52 -0500